DRC-2018-001449 - 0901a068807b6269

ENERGYFUELS
Energy Fuels Resources (USA) Inc.
225 Union Blvd. Suite 600
Lakewood, CO, US, 80228
303 974 2140
www.cncrgvrucls.com
February 8, 2018 Div of Waste Management
and Radiation Control
Sent VIA OVERNIGHT DELIVERY FEB 1 2 2018
Mr. Scott Anderson
Director
Division of Waste Management and Radiation Control
Utah Department of Environmental Quality
195 North 1950 West
P.O. Box 144880
Salt Lake City, UT 84114-4820
Re: Transmittal White Mesa Uranium Mill Reclamation Plan, Revision 5.1B
Dear Mr. Anderson:
Attached please find two hard copies and the associated electronic copies of the Energy Fuels Resources (USA)
Inc. (“EFRI”) White Mesa Mill (the “Mill”) Reclamation Plan, Revision 5.IB. Hard copies of the redline and
clean versions of the modified sections are included for your convenience. Electronic copies of the redline
versions of the modified sections and the clean version of the entire Reclamation Plan are provided.
EFRI prepared this Revision 5. IB to address select public comments on the Mill’s Groundwater Discharge Permit
and Radioactive Materials License. EFRI responses to public comments were documented in the EFRI letter
dated October 23, 2017 and an updated Section 6 of the Main Text to Revision 5.1 of the Plan was provided as
an attachment to the October 23, 2017 letter. Reclamation Plan 5.IB, Attachment A (Technical Specifications)
and the remaining Main Text sections have also been updated with minor revisions to address public comments
and for consistency. The remaining attachments and appendices do not require revisions and therefore the
designation of Revision 5.1 or reference to Revision 5.1 remain to indicate changes have not been made to these
components of the Plan.
If you should have any questions regarding this transmittal please contact me at 303-389-4134.
Yours very truly,
Energy Fuels Resources (USA) Inc.
Kathy Weinel
Quality Assurance Manager
CC: David C. Frydenlund
David Turk
Logan Shumway
Scoti Bakken
Paul Goranson
February 8, 2018
Sent VIA OVERNIGHT DELIVERY
Mr. Scott Anderson
Director
Division of Waste Management and Radiation Control
Utah Department of Environmental Quality
195 North 1950West
P.O. Box 144880
Salt Lake City, UT 84114-4820
Energy Fuels Resources (USA) Inc.
225 Union Blvd. Suite 600
Lakewood, CO, US, 80228
303 974 2140
www.cnergyfuels.com
Re: Transmittal White Mesa Uranium Mill Reclamation Plan, Revision 5.18
Dear Mr. Anderson:
Attached please find two hard copies and the associated electronic copies of the Energy Fuels Resources (USA)
Inc. ("EFRI") White Mesa Mill (the "Mill") Reclamation Plan, Revision 5.IB. Hard copies of the redline and
clean versions of the modified sections are included for your convenience. Electronic copies of the redline
versions of the modified sections and the clean version of the entire Reclamation Plan are provided.
EFRI prepared this Revision 5. IB to address select public comments on the Mill's Groundwater Discharge Permit
and Radioactive Materials License. EFRI responses to public comments were documented in the EFRI letter
dated October 23, 2017 and an updated Section 6 of the Main Text to Revision 5.1 of the Plan was provided as
an attachment to the October 23, 2017 letter. Reclamation Plan 5. IB, Attachment A (Technical Specifications)
and the remaining Main Text sections have also been updated with minor revisions to address public comments
and for consistency. The remaining attachments and appendices do not require revisions and therefore the
designation of Revision 5 .1 or reference to Revision 5 .1 remain to indicate changes have not been made to these
components of the Plan.
If you should have any questions regarding this transmittal please contact me at 303-389-4134.
Yours very truly,
ENERGY FUELS RESOURCES (USA) INC.
Kathy Weinel
Quality Assurance Manager
CC: David C. Frydenlund
David Turk
Logan Shumway
Scott Bakken
Paul Goranson
December 5, 2016
SENT VIA E-MAIL AND EXPRESS DELIVERY
Mr. Scott Anderson
Director of Waste Management and Radiation Control
Utah Department of Environmental Quality
195 North 1950 West
P.O. Box 144880
Salt Lake City, UT 84114-4880
Energy Fuels Resources (USA) Inc.
225 Union Blvd. Suite 600
Lakewood, CO, US, 80228
303 974 2140
www .enernyfucls.com
Re: Transmittal White Mesa Uranium Mill Reclamation Plan, Revision 5.1
Dear Mr. Anderson:
Pursuant to discussions with the Division for Waste Management and Radiation Control
("DWMRC") regarding the draft Stipulation and Consent Agreement ("SCA", dated July 1,
2016) for the Cell 2 cover placement activities, Energy Fuels Resources (USA) Inc. ("EFRI")
provided the DWMRC with the White Mesa Uranium Mill Reclamation Plan, Revision 5.1
("Reclamation Plan") on August 10, 2016. DWMRC provided written review comments to
EFRI on both documents, including draft redlines on the SCA on September 28, 2016. EFRI
revised the SCA and select sections of the Reclamation Plan to address DWMRC's review
comments and also incorporate comments resulting from discussions with the DWMRC during a
meeting on October 5, 2016 and during follow up conference calls. Select sections of the
Reclamation Plan and SCA were submitted on November 11, 2016 to incorporate the above
referenced comments. DWMRC provided verbal comments to the November 11, 2016 revisions
in a conference call on November 16, 2016. The attached redlines address the verbal comments
provided by DWMRC in the November 16, 2016 conference call. This letter transmits the
revised documents and includes:
• Two CDs each containing:
o An electronic file of the revised draft SCA (with redlines since last draft provided
toDWMRC)
o a word searchable electronic copy of the White Mesa Uranium Mill Reclamation
Plan, Revision 5 .1 dated December 2016 (includes revised sections of the
Reclamation Plan since the August 2016 version)
o electronic file copies of redlined report sections changed since the November 11,
2016 submittal of the Reclamation Plan
• Two sets of hard copies of the revised draft SCA
• Two sets of hard copies of replacement sections to the August 2016 version of the
Reclamation Plan. Hard copies include:
o Binder covers
Letter to Scott Anderson
December 5, 2016
Page 2 of 2
o Reclamation Plan main text
o Drawings
o Updated Cover Design Report main text (Appendix A to Reclamation Plan)
o Appendix G to Updated Cover Design Report (main text only)
o Appendix L to Updated Cover Design Report (main text only)
If you should have any questions regarding this transmittal please contact me at 303-389-4160 or
Kathy Weinel at 303-389-4134.
ENERGY FUELS RESOURCES (USA) INC.
Harold R. Roberts
Executive Vice President Conventional Operations
cc: David C. Frydenlund
Kathy W einel
Logan Shumway
Scott Bakken
August 10, 2016
Sent VIA OVERNIGHT DELIVERY
Mr. Scott Anderson
Director
Division of Waste Management and Radiation Control
Utah Department of Environmental Quality
195 North 1950 West
P.O. Box 144880
Salt Lake City, UT 84114-4820
Energy Fuels Resources (USA) Inc.
225 Union Blvd. Suite 600
Lakewood, CO, US, 80228
303 974 2140
www.energyfuels.com
Re: Transmittal White Mesa Uranium Mill Reclamation Plan, Revision 5.1
Dear Mr. Anderson:
Pursuant to discussions with the Division of Waste Management and Radiation Control ("DWMRC") regarding
the Stipulated Consent Agreement for the Cell 2 cover activities, enclosed are two copies of the White Mesa
Uranium Mill Reclamation Plan, Revision 5.1. Also enclosed are two CDs each containing a word searchable
electronic copy of the document.
If you should have any questions regarding this transmittal please contact me at 303-389-4160 or Kathy Weinel
at 303-389-4134.
Yours very truly,
ENERGY FUELS RESOURCES (USA) INC.
Harold R. Roberts
Executive Vice President Conventional Operations
CC: David C. Frydenlund
Kathy Weinel
David Turk
Logan Shumway
Scott Bakken
Reclamation Plan
White Mesa Mill
Blanding, Utah
Radioactive Materials License No. UT1900479
Revision 5.1B
February 2018
Prepared by:
Energy Fuels Resources (USA) Inc. 225 Union Blvd., Suite 600 Lakewood, CO 80228
Page i Revision 5.1B
Energy Fuels Resources (USA) Inc. White Mesa Mill Reclamation Plan
TABLE OF CONTENTS
Page
INTRODUCTION ....................................................................................................................................... 1
Summary of Plan ......................................................................................................................................... 1
Plan Organization ........................................................................................................................................ 1
1 SITE CHARACTERISTICS .......................................................................................................... 1-1
1.1 Climate and Meteorology ............................................................................................................. 1-5
1.1.1 Regional ................................................................................................................................. 1-5
1.1.2 Storms (FES Section 2.1.4, updated) .................................................................................... 1-8
1.1.3 On Site ................................................................................................................................... 1-8
1.2 Topography ................................................................................................................................. 1-10
1.3 Archeological Resources ............................................................................................................ 1-10
1.3.1 Archeological Sites ............................................................................................................. 1-10
1.3.2 Current Status of Excavation .............................................................................................. 1-11
1.4 Surface Water ............................................................................................................................. 1-12
1.4.1 Surface Water Description (FES Section 2.6.1.1) .............................................................. 1-12
1.4.2 Surface Water Quality as of the Date of the FES (FES Section 2.6.1.2) ........................... 1-15
1.4.3 Surface Water Background Quality .................................................................................... 1-18
1.5 Groundwater ............................................................................................................................... 1-22
1.5.1 Groundwater Characteristics ............................................................................................... 1-22
1.5.2 Seep and Spring Occurrence and Hydrogeology ............................................................... 1-33
1.5.3 Groundwater Quality ........................................................................................................... 1-37
1.5.4 Background Groundwater Quality in the Perched Aquifer ................................................ 1-42
1.5.5 Quality of Groundwater at the Compliance Monitoring Point .......................................... 1-46
1.5.6 Springs and Seeps ............................................................................................................... 1-46
1.5.7 Groundwater Appropriations Within a Five Mile Radius .................................................. 1-51
1.6 Geology ....................................................................................................................................... 1-51
1.6.1 Regional Geology ................................................................................................................ 1-80
1.6.2 Blanding Site Geology ........................................................................................................ 1-88
1.6.3 Site-Specific Probabilistic Seismic Hazard Analysis ....................................................... 1-100
1.7 Biota (1978 ER Section 2.9) .................................................................................................... 1-101
1.7.1 Terrestrial (1978 ER Section 2.9.1) .................................................................................. 1-101
1.7.2 Aquatic Biota (1978 ER Section 2.9.2) ............................................................................. 1-107
1.7.3 Background Radiation (2007 ER, Section 3.13.1) ........................................................... 1-108
Page ii Revision 5.1B
Energy Fuels Resources (USA) Inc. White Mesa Mill Reclamation Plan
1.7.4 Mill Site Background (1978 ER Section 2.10) ................................................................. 1-109
1.7.5 Current Monitoring Data ................................................................................................... 1-109
2 EXISTING FACILITY ................................................................................................................... 2-1
2.1 Facility Construction History ....................................................................................................... 2-1
2.1.1 Mill and Mill Tailings System .............................................................................................. 2-1
2.2 Facility Operations ....................................................................................................................... 2-1
2.2.1 Operating Periods .................................................................................................................. 2-1
2.2.2 Mill Circuit ............................................................................................................................ 2-2
2.2.3 Tailings Management Facilities ............................................................................................ 2-3
2.3 Monitoring Programs ................................................................................................................... 2-5
2.3.1 Monitoring and Reporting Under the Mill’s GWDP ........................................................... 2-5
2.3.2 Monitoring and Inspections Required Under the License .................................................. 2-14
3 TAILINGS RECLAMATION PLAN ............................................................................................ 3-1
3.1 Location and Property Description .............................................................................................. 3-1
3.2 Facilities to be Reclaimed ............................................................................................................ 3-3
3.2.1 Summary of Facilities to be Reclaimed ................................................................................ 3-3
3.2.2 Tailings and Evaporative Cells ............................................................................................. 3-3
3.3 Design Criteria .............................................................................................................................. 3-6
3.3.1 Regulatory Criteria ................................................................................................................ 3-7
3.3.2 Radon Flux Attenuation ........................................................................................................ 3-8
3.3.3 Infiltration Analysis .............................................................................................................. 3-8
3.3.4 Freeze/Thaw Evaluation ....................................................................................................... 3-8
3.3.5 Soil Cover Erosion Protection .............................................................................................. 3-9
3.3.6 Slope Stability Analysis ........................................................................................................ 3-9
3.3.7 Tailings Dewatering ............................................................................................................ 3-10
3.3.8 Settlement and Liquefaction Analyses ............................................................................... 3-10
3.3.9 Vegetation and Biointrusion ............................................................................................... 3-11
3.3.10 Cover Material/Cover Material Volumes ........................................................................... 3-12
4 MILL DECOMMISSIONING PLAN ........................................................................................... 4-1
5 REVERSION TO EXISTING COVER DESIGN ........................................................................ 5-1
5.1 Background ................................................................................................................................... 5-1
5.2 Proposed Cover Design Meets all Applicable Regulatory Criteria ............................................ 5-1
5.3 Proposed Cover Design Does not Meet all Applicable Regulatory Criteria .............................. 5-2
Page iii Revision 5.1B
Energy Fuels Resources (USA) Inc. White Mesa Mill Reclamation Plan
6 MILESTONES AND SCHEDULE COMMITMENTS FOR RECLAMATION ...................... 6-1
6.1. Background ................................................................................................................................... 6-1
6.2. Milestones and Schedule Commitments ...................................................................................... 6-1
6.2.1. General .................................................................................................................................. 6-1
6.2.2. Deadlines, Interim Milestones and Schedule Commitments for Closure of Cell 2 ............ 6-3
6.2.3. Milestones and Schedule Commitments for Closure of a Conventional Impoundment
(i.e., a Tailings Impoundment), other than Cell 2 ................................................................ 6-3
6.2.4. Milestones and Schedule Commitments for Closure of a Non-Conventional
Impoundment (e.g., an Evaporation Pond) ........................................................................... 6-7
6.2.5. Additional Milestone for Final Mill Closure ........................................................................ 6-8
6.2.6. Summary Table of Milestones .............................................................................................. 6-8
REFERENCES ........................................................................................................................................ R-1

Page iv Revision 5.1B
Energy Fuels Resources (USA) Inc. White Mesa Mill Reclamation Plan
LIST OF TABLES
Table Description Page
Table I-1 Revisions to Attachments and Appendices in Reclamation Plan ................................................. 3
Table 1.1-1 Period of Record General Climate Summary – Precipitation .................................................. 1-6 Table 1.1-2 Period of Record General Climate Summary - Temperature .................................................. 1-7 Table 1.3-1 Distribution of Recorded Sites According to Temporal Position .......................................... 1-11
Table 1.4-1 Drainage Areas of Project Vicinity and Region ..................................................................... 1-15 Table 1.5-1 Surveyed Locations and Elevations of Seeps and Springs and the Frog Pond (December
2009) ...................................................................................................................................... 1-33
Table 1.5-2 Water Quality of the Navajo Sandstone Aquifer in the Mill Vicinity ................................... 1-39 Table 1.5-3 Results of Quarterly Sampling Ruin Spring (2003-2004) ..................................................... 1-47
Table 1.5-4 Seeps and Springs Sampling.................................................................................................. 1-49
Table 1.5-5 Wells Located Within a 5-Mile Radius of the White Mesa Uranium Mill (Denison, 2009)................................................................................................................................................ 1-52
Table 1.6-1 Generalized Stratigraphic Section of Subsurface Rocks Based on Oil-Well Logs (Table
2.6-1 UMETCO) ................................................................................................................... 1-82 Table 1.6-2 Generalized Stratigraphic Section of Exposed Rocks in the Project Vicinity (Table 2.6-
2 UMETCO) .......................................................................................................................... 1-83
Table 1.6-3 Modified Mercalli Scale ......................................................................................................... 1-94 Table 1.7-1 Community Types and Expanse Within the Project site Boundary .................................... 1-102
Table 1.7-2 Ground Cover For Each Community Within the Project Site Boundary ............................ 1-102
Table 1.7-3 Birds Observed in the Vicinity of the White Mesa Project ................................................. 1-105 Table 1.7-4 Endangered, Threatened and Candidate Species in the Mill Area ...................................... 1-106
Table 1.7-5 Species Managed Under Conservation Agreements/Strategies at the Mill Area ................ 1-107 Table 2.3-1 Groundwater Monitoring Constituents Listed in Table 2 of the GWDP ................................ 2-7 Table 2.3-2 Stack Sampling Requirements ................................................................................................ 2-19
Table 2.3-3 Operational Phase Surface Water Monitoring Program ........................................................ 2-20 Table 3.3-1. Reclamation Cover Material Quantity Summary ................................................................. 3-12
Page v Revision 5.1B
Energy Fuels Resources (USA) Inc. White Mesa Mill Reclamation Plan
LIST OF FIGURES
Figure Description Page
Figure 1-1 White Mesa Mill Regional Location Map .............................................................................. 1-3
Figure 1-2 White Mesa Mill Location Map .............................................................................................. 1-4
Figure 1.1-1 Wind Rose - 2015 .................................................................................................................... 1-9 Figure 1.4-1 Drainage Map of the Vicinity of the White Mesa Mill. Adapted from: Dames & Moore
(1978b), Plate 2.6-5 ............................................................................................................... 1-14 Figure 1.4-2 Streamflow Summary in the Blanding, Utah Vicinity (Adapted from Dames & Moore (1978b), Plate 2.6-6, updated) ............................................................................................... 1-16
Figure 1.4-3 Surface Water Quality Sampling Stations in the White Mesa Mill Vicinity Prior to Mill Operations (Adapted from Dames & Moore (1978b), Plate 2.6-10) ................................... 1-17
Figure 1.5-1 Generalized Stratigraphy of White Mesa Mill (Adapted from the 2007 ER, Figure 3.7-
1) ............................................................................................................................................ 1-24 Figure 1.5-2 Approximate Elevation of Top of Brushy Basin .................................................................. 1-26
Figure 1.5-3 Kriged 1st Quarter, 2016 Water Levels ................................................................................. 1-29
Figure 1.5-4 1st Quarter, 2016 Depths to Perched Water (from Measuring Point) ................................... 1-31 Figure 1.5-5 1st Quarter, 2016 Perched Zone Saturated Thicknesses ....................................................... 1-32
Figure 1.5-6 Seeps and Springs on USGS Topographic Base, White Mesa (Adapted from HGC,
2014, Figure E.1) ................................................................................................................... 1-34 Figure 1.5-7 Geologic Map on USGS Topographic Base (HGC, 2014 Figure E.2) .............................. 1-36
Figure 1.5-8 Groundwater (Well or Spring) Sampling Stations in the White Mesa Vicinity (Adapted
from the 2007 ER, Figure 3.7-8) ........................................................................................... 1-41 Figure 1.5-9 Ground Water Appropriation Applications Within a 5-Mile Radius ................................... 1-79
Figure 1.6-1 Colorado Plateau Geology Map (Adapted from the 2007 ER, Figure 3.4-1) ...................... 1-81 Figure 1.6-2 White Mesa Millsite Geology of Surrounding Area ............................................................ 1-89 Figure 1.6-3 Seismicity Within 320km of the White Mesa Mill .............................................................. 1-93
Figure 1.6-4 Seismicity Within 200km of the White Mesa Mill .............................................................. 1-96 Figure 1.6-5 Seismicity of the Western United States 1950 to 1976 ........................................................ 1-97
Figure 1.6-6 Colorado Lineament .............................................................................................................. 1-99
Figure1.7-1 Vegetation Community Types on the White Mesa Mill Site ............................................. 1-103 Figure 2.3-1 Site Plan Showing Locations of Perched Wells and Piezometers ......................................... 2-6
Figure 2.3-2 Particulate Monitoring Stations ............................................................................................ 2-15
Figure 2.3-3 Soil Monitoring Stations ....................................................................................................... 2-17 Figure 3.1-1 White Mesa Mill Regional Map Showing Land Position ...................................................... 3-2

Page vi Revision 5.1B
Energy Fuels Resources (USA) Inc. White Mesa Mill Reclamation Plan
LIST OF DRAWINGS
REC-0 Title Sheet and Project Location Map REC-1 Plan View of Reclamation Features
REC-2 Mill Site and Ore Pad Final Grading Plan
REC-3 Sedimentation Basin Detail TRC-1 Interim Fill Grading Plan
TRC-2 Compacted Cover Grading Plan TRC-3 Final Cover Surface Layout TRC-4 Reclamation Cover Erosion Protection
TRC-5 Cover Over Cell 4A & 4B Cross Sections TRC-6 Cover Over Cell 3 Cross Sections
TRC-7 Cover Over Cell 2 Cross Sections
TRC-8 Cover Over Cell 2 Cross Section TRC-9 Reclamation Cover Details (Sheet 1 of 2)
TRC-10 Reclamation Cover Details (Sheet 2 of 2)

LIST OF ATTACHMENTS
Attachment Description
A Technical Specifications for Reclamation of White Mesa Mill Facility, Blanding, Utah.
B Construction Quality Assurance/Quality Control Plan for Reclamation of White Mesa Mill
Facility, Blanding, Utah.
C Cost Estimates for Reclamation of White Mesa Mill Facility, Blanding, Utah.
D Radiation Protection Manual for Reclamation Activities
E Existing Cover Design Documents

LIST OF APPENDICES
Appendix Description
A Updated Tailings Cover Design Report, White Mesa Mill, December 2016. MWH, Inc.
B Preliminary Mill Decommissioning Plan, White Mesa Mill, August 2016, MWH, Inc.

Page I-1 Revision 5.1B
Energy Fuels Resources (USA) Inc. White Mesa Mill Reclamation Plan
INTRODUCTION

This Reclamation Plan (the “Plan”) has been prepared by Energy Fuels Resources (USA) Inc. (“EFRI”)1 for EFRI’s White Mesa Uranium Mill (the “Mill”), located approximately six miles south of Blanding,
Utah. This Plan presents EFRI’s plans and estimated costs for the reclamation of cells for the tailings
management system, and for decommissioning of the Mill and Mill site.2 This Plan is an update to the White Mesa Mill Reclamation Plan Revision 3.2b (Denison, 2011b) approved by the Utah Department of
Environmental Quality (UDEQ) Division of Radiation Control (DRC) on January 26, 2011.
Summary of Plan
The uranium and vanadium processing areas of the Mill, including equipment, structures and support
facilities, will be decommissioned and disposed of in tailings or buried at the Mill site as appropriate.
Equipment (including tankage and piping, agitation, process control instrumentation and switchgears, and contaminated structures) will be cut up, removed, and buried in tailings prior to final cover placement.
Concrete structures and foundations will be demolished and removed for disposal in tailings or covered in place with soil as appropriate.
The sequence of demolition will proceed so as to allow the maximum use of support areas of the facility,
such as the office and shop areas. Uncontaminated or decontaminated equipment to be considered for salvage will be released in accordance with United States Nuclear Regulatory Commission (“NRC”)
guidance and in compliance with the conditions of the EFRI’s State of Utah Radioactive Materials License
No. UT1900479 (the “License”). As with the equipment for disposal, contaminated soils from the Mill and surrounding areas and ore or feed materials on the Mill site will be disposed of in the tailings cells in
accordance with Attachment A, Technical Specifications. An evapotranspiration cover system is proposed
for reclamation of the tailings management system cells.
The estimated reclamation costs for surety are set out in Attachment C. Attachment C will be reviewed and
updated in accordance with License requirements. The reclamation costs are based on the approved
Reclamation Plan (Denison, 2011b) and incorporate reclamation work completed to date. The reclamation costs will be updated when this Plan is approved and the Cell 2 cover performance test sections (see Sections
3.0, 5.0, and 6.0) are verified based on requirements outlined in a Stipulation and Consent Agreement (SCA)
being developed between EFRI and UDEQ Division of Waste Management and Radiation Control (DWMRC) (see Sections 5.0 and 6.0).
Plan Organization
General site characteristics pertinent to this Plan are contained in Section 1.0. Descriptions of the facility construction, operations and monitoring are given in Section 2.0. The reclamation plan itself, including
descriptions of facilities to be reclaimed and design criteria, is presented in Section 3.0. Section 4.0 provides an overview of the preliminary mill decommissioning plan. Section 5.0 presents how reclamation
would proceed if the “Proposed Cover Design” in Appendix A is not approved. Milestones and schedule
commitments for reclamation are outlined in Section 6.0. Design drawings (“Drawings”) are attached to this plan following the main text. Attachments A through D comprise the Technical Specifications,

1 Prior July 25, 2012 EFRI was “Denison Mines (USA) Corp.” and prior to December 16, 2006, Denison was named
“International Uranium (USA) Corporation.” 2 Cell 1 was previously referred to as Cell 1-I. It is now referred to as Cell 1.
Page I-2 Revision 5.1B
Energy Fuels Resources (USA) Inc. White Mesa Mill Reclamation Plan
Construction Quality Assurance/Quality Control (QA/QC) Plan, Reclamation Cost Estimate, and Radiation
Protection Manual for Reclamation Activities. Attachment E provides documents on the approved “Existing Cover Design” including the Titan Environmental 1996 Tailings Cover Design Report
(Attachment E.1) and Technical Specifications (Attachment E.2). Both documents were included in the
approved Reclamation Plan Revision 3.2b (Denison, 2011b).
Supporting documents include:
• Updated Tailings Cover Design Report, December 2016. MWH, Inc. (Appendix A)
• Preliminary Mill Decommissioning Plan, August 2016. MWH, Inc. (Appendix B)

As required by Part I.H.11 of previous revisions of the Mill’s State of Utah Ground Water Discharge Permit No. UGW370004 (the “GWDP”), and Part I.H.2 of the current revision of the GWDP, EFRI completed an
infiltration and contaminant transport model of the final tailings cover system to demonstrate the long-term ability of the cover to protect nearby groundwater quality (MWH, 2010). The model was updated to address
DWMRC comments on the ICTM Report (DRC, 2012; 2013) and to incorporate additional geotechnical
and hydrologic data collected as part of field investigations conducted in 2010 and 2012 for cover borrow material and in 2013 for in situ tailings. The updated infiltration modeling results were presented in EFRI
(2012b) and EFRI (2015c). The updated cover design is included in the Updated Tailings Cover Design
Report, included as Appendix A to this Reclamation Plan, and includes a monolithic evapotranspiration (ET) cover for the tailings cells. The revised cover design and basis was used for this version of the Plan.
The Reclamation Plan is written assuming Cells 2, 3, 4A, and 4B of the tailings management system will
receive tailings to the maximum permitted tailings elevations. Cell 2 is full and partially reclaimed. Cell 3 was used for tailings storage, but currently only receives mill waste and byproduct material in accordance
with License provisions. Cell 3 is partially full, and partially reclaimed. Cell 4A is the only cell currently
receiving tailings and is partially full. Cell 4B is used for evaporation of process solutions and has not been used for tailings disposal. The Plan has been written assuming Cell 4B will be used in the future for
permanent tailings disposal. If Cell 4B is not used in the future for tailings disposal, Cell 4B can be
reclaimed for clean closure. This design is not presented in this report.
A Cell 1 Disposal Area is included in the reclamation design to provide additional storage for permanent
disposal of contaminated materials and debris from the Mill site decommissioning and windblown cleanup. The current design is approved per the existing License, however this additional storage area is not currently
needed for reclamation. If the Cell 1 Disposal Area is required for storage at the time of final Mill
decommissioning, the liner system design will be updated to be the same basic design as the liner system for Cell 4B, including the same basic leak detection system. The revised design would be submitted to the
Director prior to construction. After approval of the design by the Director, the Plan and surety would be
updated to reflect the approved design.
Revisions to this Reclamation Plan include information related to the updated tailings cover design, as well
as results of data collection and monitoring since Revision 5.0 of this Plan (Denison, 2011c). Revisions to
the attachments and appendices of the Reclamation Plan are listed in a tabular format in Table I-1.

Page I-3 Revision 5.1B
Energy Fuels Resources (USA) Inc. White Mesa Mill Reclamation Plan
Table I-1
Revisions to Attachments and Appendices in Reclamation Plan
Attachments/ Appendices Reclamation Plan Revision 5.0 (2011) Reclamation Plan Revision 5.1B (2018)*
Drawings Included in Attachment A Updated and provided as a standalone attachment
Attachment A Plans and Technical Specifications for Reclamation of White Mesa Mill Facility, Blanding, Utah Updated - Technical Specifications for Reclamation of White Mesa Mill Facility, Blanding, Utah
Attachment B Construction Quality Assurance/Quality Control Plan for
Reclamation of White Mesa Mill Facility, Blanding, Utah
Updated - Construction Quality Assurance/Quality Control Plan
for Reclamation of White Mesa Mill Facility, Blanding, Utah
Attachment C Cost Estimates for Reclamation of White Mesa Facility in Blanding, Utah Updated - Cost Estimates for Reclamation of White Mesa Facility in Blanding, Utah
Attachment D Radiation Protection Manual for Reclamation Updated - Radiation Protection Manual for Reclamation Activities
Attachment E Not included Added – Existing Cover Design Documents
Appendix A Semi-Annual Effluent Report (January through June, 2011), for the
Mill
Deleted to reduce redundancy (latest report was submitted to
DWMRC)
Appendix B Hydrogeology of the Perched Groundwater Zone and Associated Seeps and Springs Near the White Mesa Uranium Mill Site, Blanding, Utah, November 12, 2010, prepared by Hydro Geo Chem, Inc. (the “2010 HGC Report”)
Deleted to reduce redundancy (latest report was submitted to DWMRC)
Appendix C The Mill’s Stormwater Best Management Practices Plan, Revision 1.3, June 12, 2008, Emergency Response Plan, Revision 2.1, August 18, 2009, and Spill Prevention, Control, and
Countermeasures Plan, 2011.
Deleted to reduce redundancy (latest report was submitted to DWMRC)
Appendix D Updated Tailings Cover Design Report, White Mesa Mill, September 2011. MWH Americas, Inc. Updated and now Appendix A - Updated Tailings Cover Design Report, White Mesa Mill, December 2016. MWH, Inc.
Appendix E National Emission Standards for Hazardous Air Pollutants Radon Flux Measurement Program, White Mesa Mill Site, 2010, Tellco Environmental
Deleted to reduce redundancy (latest report was submitted to
DWMRC)
Appendix F Semi-Annual Monitoring Report January 1 - June 30, 2010, White Mesa Mill Meteorological Station, August 19, 2011, McVehil-Monnett Associates, Inc.
Deleted to reduce redundancy (latest report was submitted to DWMRC).
Appendix G Preliminary Mill Decommissioning Plan, White Mesa Mill,
September 2011, MWH Americas, Inc.
Updated and now Appendix B - Preliminary Mill Decommissioning Plan, White Mesa Mill, August 2016, MWH, Inc.
*Main Text and Attachment A were updated from Revision 5.1 to 5.1B (see Section 1).
Page 1-1 Revision 5.1B
Energy Fuels Resources (USA) Inc. White Mesa Mill Reclamation Plan
1 SITE CHARACTERISTICS

EFRI operates the Mill, which is located approximately six miles south of Blanding, Utah (see Figures 1-1 and 1-2). The Mill was initially licensed by the NRC in May 1980 under NRC Source Material
License No. SUA-1358. Upon the State of Utah becoming an Agreement State for uranium mills in
August 2004, the Mill’s NRC license was replaced with the Mill’s current State of Utah License and the Mill’s GWDP.
The License was up for timely renewal on March 31, 2007 in accordance with Utah Administrative
Code (“UAC”) R313-22-36.3 In accordance with R313-22-36, EFRI submitted an application to the Director (“Director”) of Utah Department of Environmental Quality, Division of Waste Management
and Radiation Control (“DWMRC”)4 on February 27, 2007 for renewal of the License under R313-22-
37 (the “2007 License Renewal Application”). Similarly, the GWDP was up for timely renewal on March 8, 2010, in accordance with UAC R317-6-6.7. In 2009, 2012, and 2014, EFRI filed an
application to the DWMRC for renewal of the GWDP for under R313-6-6.7.
The Mill is also subject to State of Utah Air Quality Approval Order DAQE-AN1205005-06 (the “Air Approval Order”) which was re-issued on March 2, 2011 and is not up for renewal at this time.
Revision 3.0 of this Plan was submitted to and approved by NRC in 2000. A copy of Revision 3.0 of this Plan was also submitted to the DWMRC as part of the 2007 License Renewal Application. The
most recently approved version of the Reclamation Plan is Revision 3.2b (Denison, 2011a). This
version of the Reclamation Plan was approved by DRC under the Mill License on January 26, 2011. A copy of the White Mesa Mill Reclamation Plan, Revision 4.0 was previously submitted to the Director
in November 2009 and is on file at the DRC. This version and previous versions of the Reclamation
Plan presented design criteria for a multi-layered cover system. Revision 5.0 of this Plan was submitted to the DWMRC in September 2011. EFRI prepared Revision 5.0 of the Plan to incorporate changes
since 2009 and to address interrogatories from the DWMRC (DRC, 2010 and 2011). EFRI prepared
Revision 5.1 of the Plan to incorporate changes since 2011 and include updates provided in EFRI response to interrogatories and review comments from DWMRC on Reclamation Plan, Revision 5.0
(Denison, 2012; EFRI, 2012a; EFRI, 2015). EFRI prepared this Revision 5.1B to address select public
comments on the White Mesa Mill Groundwater Discharge Permit and Radioactive Materials License. EFRI responses to public comments were documented in EFRI (2017) and an updated Section 6 to
Revision 5.1 of the Plan was provided as an attachment. Attachment A (Technical Specifications) has also been updated for Revision 5.1B with a minor revision to address public comments. The remaining attachments and appendices do not require revisions and therefore the designation of Revision 5.1 or
reference to Revision 5.1 remain to indicate changes have not been made to these components of the Plan.
This Section 1.0 of the Plan incorporates by reference, updates or supplements, information previously
submitted in previous environmental analyses performed at the Mill, as described below.
3 The License was originally issued by the NRC as a source material license under 10 CFR Part 40 on March 31, 1980. It was
renewed by NRC in 1987 and again in 1997. After the State of Utah became an Agreement State for uranium mills in August 2004, the License was re-issued by the DWMRC as a State of Utah Radioactive Materials License on February 16, 2005, but the remaining
term of the License did not change. 4 Prior to 2015, the DWMRC was two separate divisions of UDEQ, the Division of Radiation Control and the Division of Solid and Hazardous Waste.
Page 1-2 Revision 5.1B
Energy Fuels Resources (USA) Inc. White Mesa Mill Reclamation Plan
A Final Environmental Statement Related to Operation of White Mesa Uranium Project, Energy Fuels
Nuclear, Inc., May, 1979, Docket No. 40-8681 (the “FES”) was prepared by NRC for the original License application in May 1979, which is incorporated by reference into, updated or supplemented by
this Section 1.0. The basis for the FES was the Environmental Report, White Mesa Uranium Project San Juan County, Utah, dated January 1978, prepared by Dames & Moore (the “1978 ER”). In addition, the following environmental evaluations and other reports have been performed for the Mill
and are incorporated by reference into, updated or supplemented by this Section 1.0:
• the Environmental Assessment (“EA”) prepared for this Plan in February 2000 by NRC (the “2000
EA”);
• the EA prepared in August 2002 by NRC (the “2002 EA”) in connection with a License amendment issued by NRC authorizing receipt and processing at the Mill of certain alternate feed materials
from the Maywood Formerly Utilized Sites Remedial Action Program site in Maywood, New Jersey;
• the Statements of Basis prepared in December 2004 by the State of Utah Department of Environmental Quality (“UDEQ”) DWMRC in connection with the issuance of the GWDP revisions (the “GWDP Statement of Basis”);
• the Environmental Report in Support of the License Renewal Application, State of Utah Radioactive Materials License No. UT1900479, prepared by Denison Mines (USA), Inc., February 28, 2007
(the “2007 ER”);
• Background Groundwater Quality Reports, Source Assessment Reports (SARs), Pyrite
Investigation Report and pH Report as discussed in Section 1.5.4.

~ a, u:: 6 -i
[ii a:
~ E "' &l ~ !
i ::::, ~ Cl) ::::, ;: Scale 1"=5 miles A portion of USGS Map No NJ12-9 Cortez, CO-UT Date: Nov2009
San Juan Utah
FIGURE 1-1
REGIONAL LOCATION MAP
Design: Drafted By: D.Sledd
________________________ .... _______________________ _
EFRI
EF
R
I
Energy Fuels Resources (USA) Inc.
Page 1-5 Revision 5.1B
Energy Fuels Resources (USA) Inc. White Mesa Mill Reclamation Plan
1.1 Climate and Meteorology
1.1.1 Regional
The climate of southeastern Utah is classified as dry to arid continental. Although varying somewhat with
elevation and terrain, the climate in the vicinity of the Mill is semi-arid with normal annual precipitation of
about 13.32 inches (see Table 1.1-1). Most precipitation is in the form of rain with snowfall accounting for about 29 percent of the annual total precipitation. There are two separate rainfall seasons in the region, the
first in late summer and early autumn (August to October) and the second during the winter months
(December to March). The mean annual relative humidity is about 44 percent and is normally highest in January and lowest in July. The average annual Class A pan evaporation rate is 68 inches (NOAA, 1977),
with the largest evaporation rate typically occurring in July. This evaporation rate is not appropriate for
determining water balance requirements for the tailings management system and must be reduced by the Class A pan coefficient to determine the latter evaporation rate. Values of pan coefficients range from 60
to 81 percent. EFRI assumes for water balance calculations an average value of 70 percent to obtain an annual lake evaporation rate for the Mill area of 47.6 inches. Given the annual average precipitation rate of 13.32 inches, the net evaporation rate is 34.28 inches per year.
The weather in the Blanding area is typified by warm summers and cold winters. The National Weather Service Station in Blanding, Utah is located about 6.25 miles north of the Mill. Data from the station is
considered representative of the local weather conditions (1978 ER, Section 2.7.2). The mean annual
temperature in Blanding was 50.3°F, based on the Period of Record Summary (1904 - 2006). January is usually the coldest month and July is usually the warmest month (see Table 1.1-2).
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Energy Fuels Resources (USA) Inc. White Mesa Mill Reclamation Plan
Table 1.1-1
Period of Record General Climate Summary – Precipitation
Station:(420738) BLANDING
From Year=1904 To Year=2006
Precipitation Total Snowfall
Mean High Year Low Year 1 Day Max. >= 0.01 in. >= 0.10 in. >= 0.50 in. >= 1.00 in. Mean High Year
in. in. - in. - in. dd/yyyy or
yyyymmdd
# Days # Days # Days # Days in. in. -
January 1.39 5.31 1993 0.00 1972 1.49 15/1978 6 4 1 0 10.8 46.9 1979
February 1.21 3.87 1913 0.00 1906 1.50 03/1908 6 3 1 0 7.3 39.7 1913
March 1.05 3.72 1906 0.00 1932 1.13 01/1970 6 3 1 0 4.4 17.9 1970
April 0.87 4.35 1926 0.00 1908 1.33 04/1987 5 2 0 0 1.9 15.2 1957
May 0.71 2.62 1926 0.00 1910 1.26 25/1994 4 2 0 0 0.2 4.0 1978
June 0.45 2.84 1948 0.00 1906 1.40 28/1938 3 1 0 0 0.0 0.0 1905
July 1.15 3.55 1914 0.00 1920 1.74 21/1985 6 3 1 0 0.0 2.5 1906
August 1.38 4.95 1968 0.03 1985 4.48 01/1968 7 4 1 0 0.0 0.0 1905
September 1.28 4.80 1927 0.00 1912 1.85 29/1905 5 3 1 0 0.0 3.5 1905
October 1.45 7.01 1916 0.00 1915 2.00 19/1908 5 3 1 0 0.3 6.0 1984
November 1.05 4.17 1905 0.00 1929 2.79 27/1919 4 3 1 0 3.3 19.0 1931
December 1.33 6.84 1909 0.00 1917 3.50 23/1909 5 3 1 0 9.8 55.0 1909
Annual 13.32 24.42 1909 4.93 1956 4.48 19680801 62 36 7 1 38.2 121.0 1909
Winter 3.93 11.95 1909 0.29 1964 3.50 19091223 17 10 2 0 27.9 100.2 1979
Spring 2.63 7.77 1926 0.10 1972 1.33 19870404 15 8 1 0 6.5 28.7 1970
Summer 2.98 6.90 1987 0.12 1960 4.48 19680801 16 8 2 0 0.0 2.5 1906
Fall 3.78 8.70 1972 0.50 1917 2.79 19191127 14 9 2 1 3.7 19.5 1908
Table updated on Jul 28, 2006
For monthly and annual means, thresholds, and sums: Months with 5 or more missing days are not considered Years with 1 or more missing months are not considered
Seasons are climatological not calendar seasons
Winter = Dec., Jan., and Feb. Spring = Mar., Apr., and May
Summer = Jun., Jul., and Aug. Fall = Sep., Oct., and Nov.
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Energy Fuels Resources (USA) Inc. White Mesa Mill Reclamation Plan
Table 1.1-2
Period of Record General Climate Summary - Temperature
Station:(420738) BLANDING
From Year=1904 To Year=2006
Monthly Averages Daily Extremes Monthly Extremes Max. Temp. Min. Temp.
Max. Min. Mean High Date Low Date Highest
Mean Year Lowest
Mean Year >=
90 F
<=
32 F
<=
32 F
<=
0 F
F F F F
dd/yyyy
or yyyymmdd F
dd/yyyy
or yyyymmdd F - F - # Days # Days # Days # Days
January 39.1 17.2 28.2 63 31/2003 -20 12/1963 40.2 2003 12.6 1937 0.0 6.2 30.3 1.8
February 44.9 22.3 33.6 71 28/1906 -23 08/1933 44.2 1995 18.8 1933 0.0 2.0 26.1 0.7
March 52.7 27.8 40.3 86 31/1906 -3 28/1975 51.0 2004 33.0 1948 0.0 0.3 23.4 0.0
April 62.2 34.3 48.2 88 19/1905 10 24/1913 56.9 1992 39.4 1928 0.0 0.0 12.4 0.0
May 72.3 42.1 57.2 98 31/2002 15 16/1910 65.0 2000 50.1 1917 0.4 0.0 2.7 0.0
June 83.3 50.7 67.0 110 22/1905 28 03/1908 75.3 2002 61.2 1907 6.3 0.0 0.2 0.0
July 88.7 57.9 73.3 109 19/1905 36 15/1934 81.1 2003 66.3 1916 15.1 0.0 0.0 0.0
August 86.2 56.2 71.2 106 18/1905 38 23/1968 77.2 1926 65.6 1968 9.0 0.0 0.0 0.0
September 78.2 48.3 63.3 100 01/1905 20 26/1908 70.2 2001 56.6 1922 1.3 0.0 0.3 0.0
October 66.0 38.0 52.0 99 08/1905 10 30/1971 59.6 2003 44.6 1969 0.1 0.0 6.6 0.0
November 51.4 26.7 39.1 74 04/1905 -7 25/1931 47.3 1999 32.4 1952 0.0 0.4 23.6 0.1
December 41.2 19.2 30.2 65 03/1929 -13 23/1990 39.4 1980 19.4 1931 0.0 4.5 30.0 0.9
Annual 63.8 36.7 50.3 110 19050622 -23 19330208 55.1 2003 47.2 1932 32.2 13.5 155.6 3.4
Winter 41.7 19.5 30.7 71 19060228 -23 19330208 37.5 1907 19.3 1933 0.0 12.7 86.4 3.3
Spring 62.4 34.7 48.6 98 20020531 -3 19750328 54.8 2004 43.6 1909 0.4 0.3 38.5 0.0
Summer 86.0 54.9 70.5 110 19050622 28 19080603 76.4 2002 67.4 1941 30.4 0.0 0.2 0.0
Fall 65.2 37.7 51.4 100 19050901 -7 19311125 58.3 1926 47.8 1912 1.4 0.4 30.5 0.1
Table updated on Jul 28, 2006 For monthly and annual means, thresholds, and sums: Months with 5 or more missing days are not considered
Years with 1 or more missing months are not considered Seasons are climatological not calendar seasons
Winter = Dec., Jan., and Feb. Spring = Mar., Apr., and May
Summer = Jun., Jul., and Aug. Fall = Sep., Oct., and Nov.

Winds are usually light to moderate in the area, although occasional stronger winds may occur in the late
winter and spring. The predominant winds are from the north through north-east (approximately 30 percent of the time) and from the south through south-west (about 25 percent of the time). Winds are generally less
than 15 mph, with wind speeds greater than 25 mph occurring less than one percent of the time (1978 ER,
Section 2.7.2). As an element of the pre-construction baseline study and ongoing monitoring programs, the Mill operates an onsite meteorological station, described below. Further details about weather and climate
conditions are provided in the 1978 ER (Section 2.7) and in the FES (Section 2.1).
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Energy Fuels Resources (USA) Inc. White Mesa Mill Reclamation Plan
1.1.2 Storms (FES Section 2.1.4, updated)
Thunderstorms are frequent during the summer and early fall when moist air moves into the area from the Gulf of Mexico. Related precipitation is usually light, but a heavy local storm can produce over an inch of
rain in one day. The maximum 24-hour precipitation reported to have fallen during period 1904-2006 at
Blanding was 4.48 inches (11.36 cm). Hailstorms are uncommon in this area. Although winter storms may occasionally deposit comparable amounts of moisture, maximum short-term precipitation is usually
associated with summer thunderstorms.
Tornadoes have been observed in the general region, but they occur infrequently. Strong winds can occur in the area along with thunderstorm activity in the spring and summer. The Mill area is susceptible to
occasional dust storms, which vary greatly in intensity, duration, and time of occurrence. The basic
conditions for blowing dust in the region are created by wide areas of exposed dry topsoil and strong, turbulent winds. Dust storms usually occur following frontal passages during the warmer months and are
occasionally associated with thunderstorm activities.
1.1.3 On Site
On-site meteorological monitoring at the Mill was initiated in early 1977 and continues today. The original
purpose of the meteorological monitoring program was to document the regional atmospheric baseline and to provide data to assist in assessing potential air quality and radiological impacts arising from operation of
the Mill.
After the Mill construction was completed, the monitoring programs were modified to facilitate the assessment of Mill operations. The current meteorological monitoring program includes data collection for
wind speed, wind direction, atmospheric stability according to the standard Pasquill scheme (via
measurements of deviations in wind direction, referred to as sigma-theta), and precipitation as either rain or snow. The recorded on-site meteorological conditions are reported to EFRI on a semi-annual basis and
are described in semi-annual reports maintained at the Mill. Figure 1.1-1 shows the windrose for the Mill
site for January – December 2015, the most recent full year of compiled meteorological data.

WIND ROSE - 2015
(McVehil-Monnett Associates)
1/22/2016
Page 1-10 Revision 5.1B
Energy Fuels Resources (USA) Inc. White Mesa Mill Reclamation Plan
1.2 Topography
The following text is reproduced from Section 2.3 of the FES.
The site is located on a "peninsula" platform tilted slightly to the south-southeast and surrounded on almost
all sides by deep canyons, washes, or river valleys. Only a narrow neck of land connects this platform with
high country to the north, forming the foothills of the Abajo Mountains. Even along this neck, relatively deep stream courses intercept overland flow from the higher country. Consequently, this platform (White
Mesa) is well protected from runoff flooding, except for that caused by incidental rainfall directly on the
mesa itself. The land on the mesa immediately surrounding the Mill site is relatively flat.
1.3 Archeological Resources
The following discussion of archeological sites is adapted from Section 2.5.2.3 of the FES.
1.3.1 Archeological Sites
Archeological surveys of portions of the entire Mill site were conducted between the fall of 1977 and the
spring of 1979. The total area surveyed contained parts of Section 21, 22, 27, 28, 32, and 33 of T37S, R22E, and encompassed 2,000 acres (809 ha), of which 200 acres (81 ha) are administered by the U. S. Bureau of Land Management (“BLM”) and 320 acres (130 ha) are owned by the State of Utah. The
remaining acreage is privately owned. During the surveys, 121 archeological sites were recorded and all were determined to have an affiliation with the San Juan Anasazi who occupied this area of Utah from 0
A.D. to 1300 A.D. All but 22 of the sites were within the Mill site boundaries.
Table 1.3-1, adapted from FES Table 2.18, summarizes the recorded sites according to their probable temporal positions. The dates of occupation are the best estimates available, based on professional
experience and expertise in the interpretation of archeological evidence. Available evidence suggests that
settlement on White Mesa reached a peak in perhaps 800 A.D. Occupation remained at approximately that level until sometime near the end of Pueblo II or in the Pueblo II/Pueblo III transition period. After this
period, the population density declined sharply, and it may be assumed that the White Mesa area was, for
the most part, abandoned by about 1250 A.D.
Archeological test excavations were conducted by the Antiquities Section, Division of State History, in the
spring of 1978, on 20 sites located in the area later to be occupied by Cells 2, 3 and 4 (now comprised of
Cell 4A and Cell 4B). Of these sites, 12 were deemed by the State Archeologist to have significant National Register potential and four to have possible significance. The primary determinant of significance in this
study was the presence of structures, though storage features and pottery artifacts were also common.
In the fall of 1978, a surface survey was conducted on much of the previously unsurveyed portions of the proposed Mill site. Approximately 45 archeological sites were located during this survey, some of which
are believed to be of equal or greater significance than any sites from the earlier study. Determination of the actual significance of all untested sites would require additional field investigation.

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Energy Fuels Resources (USA) Inc. White Mesa Mill Reclamation Plan
Table 1.3-1
Distribution of Recorded Sites According to Temporal Position
Temporal position Approximate dates (A.D.)a Number of sites
Basket Maker III 575-750 2
Basket Maker III/Pueblo I 575-850 27
Pueblo I 750-850 12
Pueblo I/Pueblo II 850-950 13
Pueblo II 950-1100 14
Pueblo II/Pueblo III 1100-1150 12
Pueblo III 1150-1250 8
Pueblo II+ B
Multicomponent C 3
Unidentified D 14
a Includes transitional periods. b Although collections at these locations were lacking in diagnostic material, available evidence indicates that the site would have been used or occupied no earlier than 900 A.D. and possibly later. c Ceramic collections from each of these sites indicate an occupation extending from Pueblo I through Pueblo II and into Pueblo III. d These sites did not produce evidence strong enough to justify any identification.
Source: Adapted from Dames & Moore (1978b) (1978 ER), Table 2.3-2, FES, Page 2-20, Table 2.18, and from supplementary reports on project archeology.
Pursuant to 10 CFR Part 63.3, the NRC submitted on March 28, 1979, a request to the Keeper of the
National Register for a determination of eligibility for the area which had been surveyed and tested. The area contained 112 archeological sites and six historical sites. The determination by the Keeper of the
National Register on April 6, 1979, was that the White Mesa Archeological District is eligible for inclusion
in the National Register.
1.3.2 Current Status of Excavation
Archeological investigations for the entire Mill site and for Cells 1 through Cell 4 (now comprised of Cell 4A and Cell 4B) were completed with the issuance of four separate reports covering 30 sites, excluding re-investigations. (Lindsay 1978, Nielson 1979, Casjens et al 1980, and Agenbroad et al 1981).
The sites reported as excavated are as follows:
6380 6394 6437
6381 6395 6684
6384 6396 6685
6385 6397 6686
6386 6403 6697
6387 6404 6698
6388 6420 6699
6391 6429 6754
6392 6435 6757
6393 6436 7754

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Energy Fuels Resources (USA) Inc. White Mesa Mill Reclamation Plan
Sites for which excavation has not been required are:
6379 6441 7658 7690 6382 6443 7659 7691
6405 6444 7660 7693
The sites remaining to be excavated or investigated for significance are:
6408 6445 7657 7687 6421 6739 7661 7689
6427 6740 7665 7696 6430 7653 7668 7700
6432 7655 7675 7752 6439 7656 7684 7876

The following site was excavated in 2009 in connection with the construction of the new decontamination
pad at the Mill:
42Sa27732
The following sites were excavated in the summer of 2010 in connection with the construction of Cell 4B
and a final report was prepared:

42Sa6391
42Sa6392 42Sa6393
42Sa6397
42Sa6431
42Sa6757 42Sa8014
42Sa28128
42Sa28129
42Sa28130 42Sa28131
42Sa28132
42Sa28133
42Sa28134
1.4 Surface Water
The following description of undisturbed surface water conditions is adapted from Section 2.6.1 of the FES and Section 3.7.1 of the 2007 ER and is updated to include current data.
The Mill was designed and constructed to prevent run-on or runoff of stormwater by a) diverting runoff
from precipitation on the Mill site to the tailings management cells; and b) diverting runoff from surrounding areas away from the Mill site. In addition to these designed control features, the facility has
developed a Stormwater Best Management Practices Plan, Revision 1.5: May 2, 2016 (EFRI, 2016) which
describes site drainage features and the best management practices employed to assure appropriate control and routing of stormwater.
1.4.1 Surface Water Description (FES Section 2.6.1.1)
The Mill site is located on White Mesa, a gently sloping (1 percent SSW) plateau that is physically defined by the adjacent drainages which have cut deeply into regional sandstone formations. There is a small
drainage area of approximately 62 acres (25 ha) above the site that could yield surface runoff to the site.
Runoff from the Mill area is conducted by the general surface topography to either Westwater Creek, Corral
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Energy Fuels Resources (USA) Inc. White Mesa Mill Reclamation Plan
Creek, or to the south into an unnamed branch of Cottonwood Wash. Local porous soil conditions,
topography and low acreage annual rainfall of 13.32 inches cause these streams to be intermittently active, responding to spring snowmelt and local rainstorms (particularly thunderstorms). Surface runoff from
approximately 384 acres (155 ha) of the Mill site drains westward and is collected by Westwater Creek,
and runoff from another 384 acres (155 ha) drains east into Corral Creek. The remaining southern and southwestern portions of the site drain indirectly into Cottonwood Wash (Dames & Moore, 1978b, p. 2-
143). The site and vicinity drainages carry water only on an intermittent basis. The major drainages in the
project vicinity are depicted on Figure 1.4-1 and their drainages tabulated in Table 1.4-1. Total runoff from the site area (total yield per watershed area) is estimated to be less than 0.5 inch (1.3 cm) annually (Dames
& Moore, 1978b, p. 2-143).
There are no perennial surface waters on or in the vicinity of the Mill site. This is due to the gentle slope of the mesa on which the site is located, the low average annual rainfall of 13.32 inches (33.8 cm) per year
at Blanding, local soil characteristics and the porous nature of local stream channels. Prior to construction, three small ephemeral catch basins were present on the site to the northwest and northeast of the Mill site.
Corral Creek is an intermittent tributary to Recapture Creek. The drainage area of that portion of Corral
Creek above and including drainage from the eastern portion of the site is about 5 square miles (13 km2). Westwater Creek is also an intermittent tributary of Cottonwood Wash. The Westwater Creek drainage
basin covers nearly 27 square miles (70 km2) at its confluence with Cottonwood Wash 1.5 miles (2.5 km)
west of the Mill site. Both Recapture Creek and Cottonwood Wash are similarly intermittently active, although they carry water more often and for longer periods due to their larger watershed areas. They both
drain to the south and are tributaries of the San Juan River. The confluences of Recapture Creek and
Cottonwood Wash with the San Juan River are approximately 18 miles (29 km) south of the Mill site. The San Juan River, a major tributary for the upper Colorado River, has a drainage of 23,000 square miles
(60,000 km2) measured at the USGS gauge to the west of Bluff, Utah (Dames & Moore, 1978b, p. 2-130).

CORRAL CREEK
WATERSHED
WESTWATER CREEK
WATERSHED
RECAPTURE CREEK
WATERSHED
SPRING CREEK
WATERSHED
COTTONWOOD WASH
WATERSHED
WHITE MESSA MILL
1
2
3
Location:
County:State:
Scale:Drafted By:
Date By
REVISIONS
Date:
Energy Fuels
WHITE MESA MILL
Drainage Map of the Vicinity
of the White Mesa Mill
Figure 1.4-1
USGS GAUGE NO. 09376900
USGS GAUGE NO. 09378630
USGS GAUGE NO. 09378700
1
2
3
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Energy Fuels Resources (USA) Inc. White Mesa Mill Reclamation Plan
Table 1.4-1
Drainage Areas of Project Vicinity and Region

Basin description Drainage area
km2 sq. miles
Corral Creek at confluence with Recapture Creek 15.0 5.8
Westwater Creek at confluence with Cottonwood Wash 68.8 26.6
Cottonwood Wash at USGS gage west of project site <531 <205
Cottonwood Wash at confluence with San Juan River <860 <332
Recapture Creek at USGS gage 9.8 3.8
Recapture Creek at confluence
with San Juan River
<518 <200
San Juan River at USGS gage
downstream at Bluff, Utah
<60,000 <23,000
Source: Adapted from Dames & Moore (1978b), Table 2.6-3
Storm runoff in these streams is characterized by a rapid rise in the flow rates, followed by rapid recession primarily due to the small storage capacity of the surface soils in the area. For example, on August 1, 1968,
a flow of 20,500 cfs (581 m3/sec) was recorded in Cottonwood Wash near Blanding. The average flow for
that day, however, was only 4,340 cfs (123 m3/sec). By August 4, the flow had returned to 16 cfs (0.5 m3/sec) (Dames & Moore, 1978b, p. 2-135). Monthly streamflow summaries updated from Figure 2.4 of
the FES are presented in Figure 1.4-2 for Cottonwood Wash, Recapture Creek and Spring Creek. Flow
data are not available for the two smaller water courses closest to the Mill site, Corral Creek and Westwater Creek, because these streams carry water infrequently and only in response to local heavy rainfall and
snowmelt, which occurs primarily in April, August, and October. Flow typically ceases in Corral and
Westwater Creeks within 6 to 48 hours after precipitation or snowmelt ends.
1.4.2 Surface Water Quality as of the Date of the FES (FES Section 2.6.1.2)
Sampling of surface water quality in the Mill vicinity began in July 1977 and continued through March 1978. Baseline data describe and evaluate existing conditions at the Mill site and vicinity. Sampling of the temporary on-site surface waters (two catch basins) was attempted, but without success because of the lack
of naturally occurring water in these basins. Sampling of ephemeral surface waters in the vicinity was possible only during major precipitation events, as these streams are normally dry. See FES Section 2.6.1.2.
Surface water sample sites used prior to Mill operations are presented on Figure 1.4-3. The water quality
values obtained for these sample sites are given in Dames & Moore (1978b) Table 2.6-7, and FES Table 2.22. Water quality samples were collected during the spring at several intermittently active streams that
drain the Mill area. These streams include Westwater Creek (S1R, S9) Corral Creek below the small
irrigation pond (S3R), the junction of Corral Creek and Recapture Creek (S4R), and Cottonwood Creek (S8R). Samples were also taken from a surface pond southeast of the Mill (S5R). No samples were taken
at S2R on Corral Creek or at the small wash (S6R) located south of the site.

I-w w u. w c:: (..) <(
~ 0 _J u. >-_J ::c I-z 0 :E
w <.!) ~ w ~
I-w w u. w c:: (..)
<(
~ 0 _J
"O u. al >-" _J "O ::c
a, I-
0 z 0 0 ~ :E ~ w C\J <.!)
')J ~ ": w Cl ~ u::
? "O ~ E "' I!! ii5
C\J
"' -I!! ::, Cl u:: 6 ..; C "' a: () " a: 'in C "' a:
C 0 ~ E "' u " ~ Cl 3: ~ ~ J9 ::::,
<(
Cl) 2 ;;:
400
350
300
AVERAGE ANNUAL FLOW=950 AF-(1966-2001)
DRAINAGE AREA=3.77 SQ. Ml.
AVERAGE ANNUAL YIELD=252.1 AF/SQ. Ml.
YIELD-AF/SQ. Ml
MIN. AVG.
1600
!ii 1400
w u. ~ 1200
MAX.
(..) <( 250 ------~1000
200
150
100
50
400
350
300
250
200
150
100
50
2.7 252 881
(1990) (1983)
-
~
---, -I
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC I
MONTH
RECAPTURE CREEK NEAR BLANDING
USGS GAUGE 09378630
AVERAGE ANNUAL FLOW=7757 AF -(1966-1971)
DRAINAGE AREA=4.95 SQ. Ml.
AVERAGE ANNUAL YIELD=153 AF/SQ. Ml.
YIELD-AF/SQ. Ml
MIN. AVG.
46.9 153
(1971)
Q JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 1
MONTH
SPRING CREEK ABOVE DIVERSIONS,
USGS GAUGE 09376900
0 _J u. >-_J ::c I-z 0 :E
w <.!) ~ w ~
MAX.
262
(1966)
800
600
400
200
AVERAGE ANNUAL FLOW=6547 AF -(1965-1986)
DRAINAGE AREA=205 SQ. Ml.
AVERAGE ANNUAL YIELD=32 AF/SQ. Ml.
YIELD-AF/SQ. Ml
MIN. AVG. MAX.
,__ Lf
I
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC I
MONTH
COTTONWOOD WASH NEAR BLANDING
USGS GAUGE 09378700
NOTES
1. FOR THE LOCATION OF WATER COURSES
SUMMARIZED, SEE FIGURE 3.7-1
4.9
(1976)
32
2. SOURCE OF DATA. WATER RESOURCES DATA RECORDS.
COMPILED AND PUBLISHED BY USGS.
'6/J£RGYFUELS
Project:
County:
Date: Nov, 2009
WHITE MESA MILL
San Juan I State: Utah
FIGURE 1.4-2
Streamflow Summary
Blanding, UT Vicinity
I Design: I Dratted By: DLS
88
(1983)
• J
18
19
)
PROPERTY BOUNDARY
RESERVATION BOUNDARY
•••-••• CANYON RIM
S• SURFACE WATER SAMPLING LOCATION
0 1,500' 3,000'
SCALE: 1" = 3,000'
15
/
I
UT83-SF
S2R
(o
I
I
)
/
14
23
.
'
~ I•
l
I • I ,
• • I. • •
'
RLJ~ -V. ENERGYFUELS
REVISIONS Project: White Mesa Mill
Date By County: San Juan I ~tate: UT
07_11 GM Location:
SURFACE WATER QUALITY SAMPLING
STATIONS IN THE WHITE MESA VICINITY
FIGURE 1.4-3
Author: I Date: Nov 2009 I Drafted By: DLS
I>
Page 1-18 Revision 5.1B
Energy Fuels Resources (USA) Inc. White Mesa Mill Reclamation Plan
Natural surface water quality in the vicinity of the Mill is generally poor. Waters in Westwater Creek (S1R
and S9) were characterized by high total dissolved solids (TDS; mean of 674 mg/liter) and sulfate levels (mean 117 mg of SO4 per liter). The waters were typically hard (total hardness measured as CaCO3; mean
223 mg/liter) and had an average pH of 8.25. Estimated water velocities for Westwater Creek averaged 0.3
fps (0.08 m/sec) at the time of sampling.
Samples from Cottonwood Creek (S8R) at the time of the FES were generally similar in quality to
Westwater Creek water samples, although the TDS and sulfate levels were lower (TDS averaged 264
mg/liter; SO4 averaged 40 mg/liter) during heavy spring flow conditions (80 fps [24 m/sec] water velocity).
The concentrations of TDS increased downstream in Corral Creek, averaging 3,180 mg/liter at S3R and
6,660 mg/liter (one sample) at S4R. Total hardness averaged in excess of 2,000 mg/liter, and pH values
were slightly alkaline. Estimated water velocities in Corral Creek were typically less than 0.1 fps (0.03 m/sec) during sampling.
The spring sample collected at the surface pond south of the Mill site (S5R) indicated a TDS concentration of less than 300 mg/liter. The water was slightly alkaline with moderate dissolved sulfate levels averaging 42 mg/liter.
During heavy runoff, the concentration of total suspended solids in these streams increased sharply to values in excess of 1,500 mg/liter (FES, Table 2.22). High concentrations of certain trace elements were measured
in some sampling areas. Levels of mercury (total) were reported as high as 0.002 mg/liter (S3R, 7/25/77;
S8R, 7/25/77). Total iron measured in the pond (S5R, 11/10/77) was 9.4 mg/liter. The FES concluded (Section 2.6.1.2 of the FES) that these values appear to reflect groundwater quality in the vicinity and are
probably due to evaporative concentration and not due to human perturbation of the environment. Corral
Creek was also sampled at the time of the FES, but it has not been included in subsequent operational monitoring at the Mill. See Table 2.22 of the FES for sampling results for Corral Creek.
1.4.3 Surface Water Background Quality
Surface water samples are collected for Cottonwood Wash and Westwater Creek as part of the Mill’s operational monitoring program. Samples were also taken prior to Mill construction and summarized in
the FES as well as at various times and for various parameters since then. A comparison of the FES results
and subsequent sampling results during Mill operation is shown in Table 1.4-2. Surface water values over time for both Cottonwood Wash and Westwater Creek are included in the Semi-Annual Effluent Reports.

Page 1-19 Revision 5.1B
Energy Fuels Resources (USA) Inc. White Mesa Mill Reclamation Plan
Table 1.4-2
Summary of FES and Subsequent Sampling Results For Cottonwood Wash and Westwater Creek
Parameter FES Cottonwood Wash (7/25/77-3/28/78)*
Cottonwood Wash (9/16/81-6/20/09)
Cottonwood Wash 2010
Cottonwood Wash 2011
Cottonwood Wash 2012
Cottonwood Wash 2013
Cottonwood Wash 2014
Cottonwood Wash 2015
FES Westwater Creek (11/10/77-3/23/78)*
Westwater Creek (2/22/82-6/20/09)
Westwater Creek 2010
Westwater Creek 2011
Westwater Creek 2012
Westwater Creek 2013
Westwater Creek 2014
Westwater Creek 2015
Field Specific
Conductivity (µmhos/cm)
240-550 - 16123
16253 16003
5134
6224
2594
7854
14025
16315
2306
15687
6748
2018

163410
653.811 70311 14011
167712
68313 78513 30413
165814
74015 79215
47215
18015
320-620 - 17073
17823 16503
16454

12345 8066
- 28311 41213 137214
25715
Field pH 6.6 to 8.1 - 6.423
6.673
8.164
8.204
7.944
7.214
7.045
6.845
7.796
7.067
7.848
7.958

7.2510
7.9811 7.7211 8.7411
7.1812
7.8113 8.1713 8.7713
7.3014
6.8615
7.4315
8.3015
7.2615
7.6-8.3 - 7.033
6.983
8.164
6.675
7.606
- 7.4511 8.6413 7.2414
7.5515

Dissolved Oxygen - - - - - - - - - - - - - - - -
Temperature (ºC) 6.0 to 35 - 16.173 15.853 15.053
3.194
9.704
21.374
4.504
16.505 15.915
12.606
16.287
9.808
18.078
16.2810 8.1111 5.4811
16.9011
16.9012 13.6113 18.9213
17.6513
16.4014
6.7515
16.1915
22.3915
12.5915
3-14 - 17.993 17.213 10.13
-0.034
15.135
10.686 - 21.1611 17.0013 17.5214
17.6915
Estimated Flow m/hr 0.4 to 80 - - - - - - - 0.28 to 39.9 - - - - - - - pH 7.5 to 8.21 - 7.473 7.555
8.045
- - - - 8.2 to 8.35 - 7.383 7.205 - - - -

Redox Potential 210 to 260 - 5013 4923 4415 4217 25910 23812 18914 186 to 220 - 4013 3423 - - - - 20114
Alkalinity (as CaCO3) 134 to 195 76 to 257* - - - - - - 147 to 229 230* - - - - - -
Hardness, total (as CaCO3) 148 to 195 - - - - - - - 117 to 289 - - - - - - -
Carbonate (as CO3) 0.0 ND ND3 65 mg/L ND7 ND10 ND12 ND14 0.0 to 2.3 ND ND3 ND5 - - - ND14
Bicarbonate (as HCO3) - 316 mg/L 3403 mg/L 3165 mg/L 3267 mg/L 28010 mg/L 25112 mg/L 27114 mg/L - 465 mg/L 450 mg/L 3305 mg/L - - - 35914 mg/L
Aluminum, dissolved 0.16 to 3.0 - - - - - - - 0.1 to 4.0 - - - - - - -
Ammonia (as N) <0.1 to 0.16 ND ND3 ND5 ND7 ND10 ND12 0.51214 mg/L <0.1 to 0.75 ND 0.503 mg/L 0.065 mg/L - - - 0.12314 mg/L
Arsenic, total 0.02 to 0.041 - - - - - - - 0.007 to 0.037 - - - - - - -
Arsenic, Dissolved - ND ND3 ND5 ND7 ND10 ND12 ND14 - ND ND3 12.35 ug/L - - - ND14
Barium, total 0.2 to 1.2 - - - - - - - <0.2 to 0.81 - - - - - - -
Beryllium, dissolved - ND ND3 ND5 ND7 ND10 ND12 ND14 - ND ND3 0.915 ug/L - - - ND14
Boron, total <0.1 to 0.2 - - - - - - - <0.1 to 0.1 - - - - - - - Cadmium, total <0.002 to 0.01 - - - - - - - <0.002 to 0.006 - - - - - - -
Cadmium, dissolved - ND ND3 ND5 ND7 ND10 ND12 ND14 - ND ND3 0.95 ug/L - - - ND14 Calcium, dissolved 54 to 178 90.3 mg/L 92.23 mg/L 94.2 – 95.45 mg/L 1017 mg/L 87.910 mg/L 99.712 mg/L 11114 mg/L 76 to 172 191 mg/L 1793 mg/L 2475 mg/L - - - 15014 mg/L
Calcium - 37 to 71* - - - - - - - 94.5* - - - - - -
Chlorine - - - - - - - - - 41* - - - - - - Chloride 6 to 24 5 to 33.3* 1123 mg/L 113 - 1345
mg/L
1497 mg/L 11810 mg/L 12812 mg/L 13314 mg/L 17 to 125 76* 403 mg/L 215 mg/L - - - 32.614
mg/L
Page 1-20 Revision 5.1B
Energy Fuels Resources (USA) Inc. White Mesa Mill Reclamation Plan
Table 1.4-2
Summary of FES and Subsequent Sampling Results For Cottonwood Wash and Westwater Creek
Parameter FES Cottonwood Wash (7/25/77-3/28/78)*
Cottonwood Wash (9/16/81-6/20/09)
Cottonwood Wash 2010
Cottonwood Wash 2011
Cottonwood Wash 2012
Cottonwood Wash 2013
Cottonwood Wash 2014
Cottonwood Wash 2015
FES Westwater Creek (11/10/77-3/23/78)*
Westwater Creek (2/22/82-6/20/09)
Westwater Creek 2010
Westwater Creek 2011
Westwater Creek 2012
Westwater Creek 2013
Westwater Creek 2014
Westwater Creek 2015
Sodium - 18 to 104* - - - - - - - 160.5* - - - - - -
Sodium, dissolved 21 to 66 205 mg/L 2143 mg/L 227 - 2295 mg/L 2477 mg/L 21710 mg/L 22712 mg/L 25114 mg/L 31 to 60 196 mg/L 1603 mg/L 1125 mg/L - - - 13914 mg/L
Silver, dissolved 0.002 to <0.005 ND ND3 ND5 ND7 ND10 ND12 ND14 <0.005 to
0.006
ND ND3 ND5 - - - ND14
Sulfate, dissolved (as SO4) 39.7 to 564 57 to 245* 3893 mg/L 389 - 3945 mg/L 3567 mg/L 40310 mg/L 41712 mg/L 44214 mg/L 85 to 163 408* 6073 mg/L 3545 mg/L - - - 39214 mg/L
Vanadium, dissolved <0.005 to <0.018 ND ND3 ND5 ND7 ND10 ND12 ND14 <0.001 to 0.008 ND ND3 34 ug/L5 - - - ND14
Manganese, dissolved 0.02 to 0.84 ND ND3 ND5 ND7 ND10 ND12 ND14 0.03 to 0.60 37 ug/L 873 ug/L 2685 ug/L - - - 0.17114 mg/L
Chromium, total <0.01 to 0.14 - - - - - - - <0.01 to 0.60 - - - - - - -
Chromium, dissolved - ND ND3 ND5 ND7 ND10 ND12 ND14 - ND ND3 ND5 - - - ND14
Copper, total 0.005 to 0.09 - - - - - - - <0.005 to 0.05 - - - - - - -
Copper, dissolved - ND ND3 ND5 ND7 ND10 ND12 ND14 - ND ND3 165 ug/L - - - ND14
Cobalt, dissolved - ND ND3 ND5 ND7 ND10 ND12 ND14 - ND ND3 ND5 - - - ND14
Fluoride, dissolved 0.2 to 0.36 0.4 mg/L 0.383 mg/L 0.34 - 0.385
mg/L
0.387 mg/L 0.41710 mg/L ND12 0.31814 mg/L 0.2 to 0.4 0.7 mg/L 0.603 mg/L 0.545 mg/L - - - 0.42414
mg/L Iron, total 5.9 to 150 - - - - - - - - - -
Iron, dissolved 0.11 to 1.9 ND ND3 ND - 535 ND7 ND10 ND12 ND14 0.17 to 2.5 89 ug/L 563 ug/L 45405 ug/L - - - ND14
Lead, total 0.05 to 0.14 - - - - - - <0.05 to 0.1 - - - - - - -
Lead, dissolved - ND ND3 ND5 ND7 ND10 ND12 ND14 - ND ND3 41.45 ug/L - - - ND14
Magnesium - 10.5 to 38.1* - - - - - - - 23.5* - - - - - -
Magnesium, dissolved 17 to 28 25 mg/L 24.83 mg/L 25.25 mg/L 27.77 mg/L 23.610 mg/L 29.012 mg/L 27.414 mg/L 13 to 26 - 44.73 mg/L 34.75 mg/L - - - 34.014 mg/L
Mercury, total 0.00006 to 0.002 - - - - - - - <0.00003 to <0.0005 - - - - - - -
Mercury, dissolved - ND ND3 ND5 ND7 ND10 ND12 ND14 - ND ND3 ND5 - - - ND14
Molybdenum,
dissolved
0.002 to 0.10 ND ND3 ND5 ND7 ND10 ND12 ND14 0.002 to 0.006 ND 293 ug/L ND5 - - - ND14
Nitrate (as N) 0.12 to 1.77 0.1 mg/L ND3 0.1 mg/L5 ND7 ND10 ND12 ND14 <0.05 to 0.05 0.8 mg/L ND3 ND5 - - - ND14 Nickel, dissolved - ND ND3 ND5 ND7 ND10 ND12 ND14 - - ND3 29 ug/L5 - - - ND14
Phosphorus, total (as
P)
0.05 to 3.2 - - - - - - - 0.05 to 0.88 - - - - - - -
Potassium, dissolved 1.2 to 6.9 1.77 to 4 mg/L 5.773 mg/L 5.9 – 6.05
mg/L
6.277 mg/L 5.5310 mg/L 6.1812 mg/L 5.9114 mg/L 2.0 to 3.2 4.05* 6.573 mg/L 3.95 mg/L - - - 1.9814
mg/L
Selenium, dissolved <0.005 to 0.08 ND ND3 ND5 ND7 ND10 ND12 ND14 <0.005 to 0.003 ND ND3 ND5 - - - ND14
Silica, dissolved (as SiO2) 8 to 18 - - - - - - - 7 to 11 - - - - - - -
Strontium, total 0.34 to 0.64 - - - - - - - 0.44 to 0.76 - - - - - - -
Thallium, dissolved - ND ND3 ND5 ND7 ND10 ND12 ND14 - ND ND3 ND5 - - - ND14
Tin, dissolved - - ND3 ND5 ND7 ND10 ND12 ND14 - ND ND3 ND5 - - - ND14
Uranium, total 0.004 to 0.27 - - - - - - - 0.006 to 0.004 - - - - - - - Uranium, dissolved 0.004 to 0.015 8.42 ug/L 8.243 ug/L 7.87 - 8.685
ug/L
8.177 ug/L 8.9510 ug/L 9.6212 ug/L 9.1214 mg/L 0.002 to 0.015 15.1 ug/L 46.63 ug/L 6.645 ug/L - - - 2.1014
mg/L
Zinc, dissolved 0.008 to 0.06 ND ND3 ND5 ND7 ND10 ND12 ND14 0.04 to 0.12 ND 223 ug/L 285 ug/L - - - ND14 Total Organic Carbon 7 to 12 - - - - - - - 6 to 16 - - - - - - - Chemical Oxygen
Demand
61 to 163 - - - - - - - 23 to 66 - - - - - - -
Oil and Grease 2 - - - - - - - 1 - - - - - - -
Page 1-21 Revision 5.1B
Energy Fuels Resources (USA) Inc. White Mesa Mill Reclamation Plan
Table 1.4-2
Summary of FES and Subsequent Sampling Results For Cottonwood Wash and Westwater Creek
Parameter FES Cottonwood Wash (7/25/77-3/28/78)*
Cottonwood Wash (9/16/81-6/20/09)
Cottonwood Wash 2010
Cottonwood Wash 2011
Cottonwood Wash 2012
Cottonwood Wash 2013
Cottonwood Wash 2014
Cottonwood Wash 2015
FES Westwater Creek (11/10/77-3/23/78)*
Westwater Creek (2/22/82-6/20/09)
Westwater Creek 2010
Westwater Creek 2011
Westwater Creek 2012
Westwater Creek 2013
Westwater Creek 2014
Westwater Creek 2015
Total Suspended
Solids
146 to 2,025 0 to 24,300* 19 - 58804
mg/L
ND - 88606
mg/L
15 – 12608
mg/L
6 – 2180010,11
mg/L
12 – 750012
mg/L
28 – 260015
mg/L
12 to 1940 <4 to 1,190* 134 mg/L ND6 - - - 439015
mg/L Total Dissolved Solids 253 to 944 10 to 1,130* 202 – 9003,4 mg/L 425 – 10305,6
mg/L 224 – 10407,8 mg/L 287 – 99610,11
mg/L 271 – 96812 mg/L 218 – 102014,15 mg/L 496 to 969 93-1370* 1140 – 12703,4 mg/L 8535 - - - 337 – 89614,15 mg/L

Gross Alpha - <1.0E-9 to 9.0E-7* - - - - - - 1E-10 to 4.5E-9 <1.0E-9* - - - - - -
Gross Alpha minus Rn & U - - ND – 2.03,4 pCi/L ND5,6 ND – 3.17,8 pCi/L ND – 10.810,11
pCi/L
ND – 13.012,13
pCi/L ND – 14.814,15
pCi/L - - ND3,4 pCi/L ND - 0.55 pCi/L - 20.411 pCi/L 7.513 pCi/L ND – 2.214,15
pCi/L
Gross Beta - - - - - - - 0 to 8E-9 - - - - - - - Uranium, dissolved 1.02E-9 to 2.79E-9 2.23E-9 to 6.02E-6* 0.0060 – 0.01163,4
mg/L
0.00787 – 0.01025,6 mg/L
0.0017 - 0.008177,8
mg/L
0.0084 - 0.009010,11
mg/L
ND - 0.00962012,13
mg/L
0.0022 – 0.0091214,15
mg/L
1.03E-9 to 1.35E-9 8.8E-7* 0.0057 – 0.04663,4 mg/L
ND – 0.006645,6 mg/L
- 0.010811 mg/L 0.004613
mg/L 0.0013 – 0.002114,15
mg/L
Uranium, total2 21.83E-7 - - - - - - - 6.09E-7 - - - 0.088,9 mg/kg - - -
Uranium, suspended - <2.0E-10 to
2.0E-7*
ND - 0.00144
mg/L
ND6 0.00358 mg/L ND –
0.000511 mg/L
ND13 0.0004 –
0.006914,15
mg/L
0 to 1E-9 6.09E-7* 0.00054
mg/L
0.00146
mg/L
0.017611
mg/L
0.001713
mg/L
0.002615
mg/L
Th-230, dissolved - <2.0E-10 to 4.14E-6* ND - 0.054 pCi/L ND6 7.28 pCi/L ND11 ND13 ND15 - <2.0E-10* ND4 pCi/L ND6 - 0.0211 pCi/L ND13 ND15
Th-230, suspended - <2.0E-10 to <9.0E-7* ND - 0.74 pCi/L ND6 3.18 pCi/L ND – 0.211 pCi/L 0.113 pCi/L ND – 2.015
pCi/L 2E-10 3.0E-10* 0.24 pCi/L 0.7 pCi/L6 - 8.711 pCi/L 1.113 pCi/L 1.215 pCi/L
Ra-226, dissolved - <2.0E-10 to 2.0E-9* 0.26 – 1.84 pCi/L ND6 0.538 pCi/L 0.16 – 1.811 pCi/L 0.3913 pCi/L 0.05 – 7.815
pCi/L - 2.0E-10* 0.184 pCi/L ND6 - 0.6811 pCi/L 0.2413
pCi/L 0.4915
pCi/L
Ra-226, suspended - <2.0E-10 to <2.0E-7* ND - 1.34 pCi/L ND6 4.48 pCi/L ND – 0.6811 pCi/L ND13 0.39 – 6.715
pCi/L 7E-10 to 1.1E-9 <2.0E-10* 4.34 pCi/L 0.3 pCi/L6 - 2811 pCi/L 6.513 pCi/L 3.415 pCi/L
Ra-226, total - - - - - - - - - - - - 0.058,9 pCi/g - - -
Pb-210 - - - - - - - - 0 to 1E-10 - - - - - - -

Acetone - ND ND3 ND5 ND7 ND10 ND12 ND14 - ND ND3 ND5 - - - ND14
Benzene - ND ND3 ND5 ND7 ND10 ND12 ND14 - ND ND3 ND5 - - - ND14 Carbon Tetrachloride - ND ND3 ND5 ND7 ND10 ND12 ND14 - ND ND3 ND5 - - - ND14
Chloroform - ND ND3 ND5 ND7 ND10 ND12 ND14 - ND ND3 ND5 - - - ND14
Chloromethane - ND ND3 ND5 ND7 ND10 ND12 ND14 - ND ND3 ND5 - - - ND14
Methyl ethyl ketone - ND ND3 ND5 ND7 ND10 ND12 ND14 - ND ND3 ND5 - - - ND14
Methylene chloride - ND ND3 ND5 ND7 ND10 ND12 ND14 - ND ND3 ND5 - - - ND14
Napthalene - ND ND3 ND5 ND7 ND10 ND12 ND14 - ND ND3 ND5 - - - ND14 Toluene - ND ND3 ND5 ND7 ND10 ND12 ND14 - ND ND3 ND5 - - - ND14
Xylenes, total - ND ND3 ND5 ND7 ND10 ND12 ND14 - ND ND3 ND5 - - - ND14
Source: FES Table 2.22 and Mill Sample Data
*Data are from historical sampling events. All other data were collected during the 2009 annual Seeps and Springs and Semi-Annual Effluent Report (SAER) sampling events.
2 Calculated by EFRI for activity comparison using the Specific Activity for U-nat (6.77E-7 Ci U-nat/g U-nat) 3 Data are from the 2010 Seeps and Springs sampling event.
4 Data are from 2010 SAER sampling events. 5 Data are from 2011 Seeps and Springs sampling event.
6 Data are from 2011 SAER quarterly sampling events. 7 Data are from 2012 Seeps and Springs sampling event.
8 Data are from 2012 SAER quarterly sampling events. 9 Sediment samples are collected in the 4th quarter in lieu of surface water when Westwater Creek is dry throughout the year.
10 Data are from 2013 Seeps and Springs sampling event. 11 Data are from 2013 SAER quarterly sampling events.
12 Data are from 2014 Seeps and Springs sampling event. 13 Data are from 2014 SAER quarterly sampling events.
14 Data are from 2015 Seeps and Springs sampling event. 15 Data are from 2015 SAER quarterly sampling event.
Page 1-22 Revision 5.1B
Energy Fuels Resources (USA) Inc. White Mesa Mill Reclamation Plan
1.5 Groundwater
Groundwater investigation and monitoring at the Mill focus on the perched groundwater zone, which is the shallowest groundwater encountered beneath the site. Although this section focuses primarily on the
perched water zone, deeper groundwater is discussed as needed, and the site geology is addressed to the
extent necessary for interpretive context. A more extensive discussion of site geology is provided in Section 1.6.
Sections 1.5.1 and 1.5.2 are based primarily on the following reports prepared by Hydro Geo Chem, Inc.
(“HGC”): Hydrogeology of the Perched Groundwater Zone and Associated Seeps and Springs Near the White Mesa Uranium Mill Site (HGC, 2010b), and Hydrogeology of the White Mesa Uranium Mill,
Blanding, Utah (HGC, 2014). Information abstracted from these reports presented here is updated with
information collected subsequent to June 6, 2014.
HGC (2010b) and HGC (2014) supplement the “HGC 2009” report summarized in Revision 4.0 of the
Reclamation Plan. They provide additional information in response to requirements set out in previous revisions of the GWDP and Part 1F.10 of the current GWDP dated August 24, 2012. Specifically, the additional information contained in HGC (2010b) and HGC (2014) include data on seeps and springs in
the vicinity of the Mill, the relationship of the seeps and springs with the perched water system, and estimated travel times for shallow groundwater to travel from the tailings cells to the nearest discharge
points. This information addresses requirements set out in previous revisions of the GWDP and Part 1F.10
of the current GWDP dated August 24, 2012. HGC (2014) contains refined estimates of shallow groundwater travel times downgradient of the tailings cells based on data collected from DR-series
piezometers installed south, southwest, and west of the tailings cells in 2011, as described in Second
Revision, Hydrogeology of the Perched Groundwater Zone in the Area Southwest of the Tailings Cells, White Mesa Uranium Mill Site, Blanding Utah (HGC 2012b; the “southwest area investigation” report).
Sections 1.5.3, 1.5.5, and 1.5.6 are based primarily on groundwater sampling programs at the Mill and
Section 1.5.4 is based primarily on the analysis of groundwater analytical data by INTERA, Inc. (INTERA). INTERA performed extensive analysis of background perched water quality data and established site-
specific groundwater compliance limits (“GWCLs”). Reports detailing work by INTERA include Revised
Background Groundwater Quality Report: Existing Wells For Denison Mines (USA) Corp.’s White Mesa Mill Site, San Juan County, Utah (INTERA 2007a), and subsequent reports, as discussed in Section 1.5.4.
1.5.1 Groundwater Characteristics
Groundwater investigations at the Mill have been ongoing for more than 38 years, beginning with the initial investigation by Dames and Moore in 1977 and 1978 (Dames and Moore 1978a and 1978b). The initial
investigation by Dames and Moore pre-dated Mill construction and operation.
Although more than 35 years of perched groundwater monitoring at the Mill indicates that tailings cell operation has not impacted perched groundwater (as will be discussed in Section 1.5.4), perched
groundwater was impacted by disposal of laboratory wastes to two (now abandoned) sanitary leach fields (prior to about 1980) before the Mill and tailings cells were operational. Disposal of laboratory wastes is
considered the source of a chloroform plume (defined by concentrations greater than 70 micrograms per
liter [µg/L]) located upgradient to cross-gradient (northeast to east) of the tailings cells. A nitrate plume (defined by concentrations greater than 10 milligrams per liter [mg/L]) that contains elevated chloride
(exceeding 100 mg/L) extends from upgradient (northeast) of the tailings cells to a portion of the area
beneath the tailings cells. The precise source(s) of the nitrate plume are not well defined; however, because the majority of the plume exists upgradient (northeast) of the tailings cells, the sources must be located
Page 1-23 Revision 5.1B
Energy Fuels Resources (USA) Inc. White Mesa Mill Reclamation Plan
upgradient (northeast) of the tailings cells. Based on the investigation and source evaluations, there are no
known current unidentified or unaddressed sources. There appear to have been a number of known and potential historical sources; however, it has not been possible to confirm or quantify the contribution of
each source.
The northwest portion of the chloroform plume commingles with the nitrate plume. Both chloroform and nitrate plumes are under corrective action by pumping.
1.5.1.1 Geologic Setting
The Mill is located within the Blanding Basin of the Colorado Plateau physiographic province. Typical of
large portions of the Colorado Plateau province, the rocks underlying the site are relatively undeformed. The average site elevation is approximately 5,600 ft (1,707 m) above mean sea level (amsl).
The site is underlain by unconsolidated alluvium and indurated sedimentary rocks consisting primarily of
sandstone and shale. The indurated rocks are relatively flat lying with dips generally less than 3 degrees. The alluvial materials consist mostly of aeolian silts and fine-grained aeolian sands with a thickness varying
from a few feet to as much as 25 to 30 ft (7.6 to 9.1 m) across the site. The alluvium is underlain by the Dakota Sandstone and Burro Canyon Formation, which are sandstones with a total thickness ranging from approximately 55 to 140 ft (17 to 43 m). Beneath the Burro Canyon Formation lies the Morrison Formation,
consisting (in descending order) of the Brushy Basin Member, the Westwater Canyon Member, the Recapture Member, and the Salt Wash Member. Kirby (2008) indicates that the contact between the Morrison Formation and the Burro Canyon Formation (between the Brushy Basin Member of the Morrison
and the Burro Canyon Formation) near Blanding, Utah is disconformable with “local erosional relief of several feet”. Data collected from perched borings at the site that penetrate the Brushy Basin Member are
consistent with a disconformable, erosional contact in agreement with Kirby (2008).
The Brushy Basin and Recapture Members of the Morrison Formation, classified as shales, are fine-grained and have a low permeability. The Westwater Canyon and Salt Wash Members also have a low average
vertical permeability due to the presence of interbedded shales. See Figure 1.5-1 for a generalized
stratigraphic column for the region.
Beneath the Morrison Formation lies the Summerville Formation, an argillaceous sandstone with
interbedded shales, and the Entrada Sandstone. Beneath the Entrada Sandstone lies the Navajo Sandstone.
The Navajo and Entrada Sandstones constitute the primary aquifer in the area of the site. The Entrada and Navajo Sandstones are separated from the Burro Canyon Formation by approximately 1,000 to 1,100 ft
(305 to 335 m) of materials with a low average vertical permeability. Groundwater within this system is
under artesian pressure in the vicinity of the site, and is used only as a secondary source of water at the site. Water in WW-series supply wells completed across these sandstone units at the site rises approximately
800 feet above the base of the overlying Summerville Formation (Titan, 1994a).

i C: E ::,
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COVERED BY UNCONSOLIDATED ALLUVIUM,
COLLUVIUM AND TALUS ~z IT ---------------sAND AND s1LT. REDD1sH BRowN vERY
'" EOLIAN SAND FINE-GRAINED
~~~~iiiml: =======:MANCOS SHA[E::: = ==sHALE, LIGHT GRAY, SOFT ~ LOV t <::< ( ( ( ( SANDSTONE, QUARTZ, LIGHT YELLOW BROWN, ~ .'-:...'-:...'-:...'-:...'-:...'-:...'-:... DAKOTA SANDSTONE POORLY SORTED, IRON CONCREATIONS.
2 ((((((( WELL INDURATED
0
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z
··:.:..<<<<<<•
''''''' ''''''' ''''''' , , , , , , , BURRO CANYON FORMATION
''''''' ''''''' ''''''' ---~~~~~+-------------
0 0 n z
BRUSHY BASIN MEMBER
---~----~------------
0 c.D
z
0
"Sj-
N z
0
LO n z
0
0
z
0
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LO
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WESTWATER CANYON MEMBER
RECAPTURE MEMBER
SALT WASH MEMBER
SUMMERVILLE FORMATION
ENTRADA SANDSTONE
NAVAJO SANDSTONE
z
0
~ 2 n:::
0 LL
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SANDSTONE, QUARTZ, LIGHT GRAY TO LIGHT
BROWN, CROSS-BEDDED, CONGLOMERATIC,
POORLY SORTED INTERBEDDED WITH
GRAY-GREEN SHALE
SHALE, GRAY, GRAY-GREEN, AND PURPLE,
SILTY IN PART WITH SOME SANDSTONE
LENSES
SANDSTONE, ARKOSIC, YELLOW TO GREENISH
GRAY, FINE TO COARSE GRAINED, INTERBEDDED
WITH GREENISH-GRAY TO REDDISH-BROWN
SHALE
SHALE, REDDISH-GRAY SILTY TO SANDY
INTERBEDDED WITH SANDSTONE, ARKOSIC,
REDDISH-GRAY, TO YELLOW-BROWN, FINE-
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SANDSTONE, QUARTZ, YELLOWISH-TO
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INTERBEDS
SANDSTONE, QUARTZ WHITE TO GRAYISH
BROWN , MASSIVE, CROSS-BEDDED, FINE-
TO MEDIUM-GRAINED
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CROSS-BEDDED, FRIABLE, FINE-TO
MEDIUM-GRAINED
'6(J.£RGYFUEL5
Project
REVISIONS County:
Date B Location:
WHITE MESA MILL
State: UT
Figure 1.5-1
Generalized Stratigraphy of
White Mesa Mill
Scale: N/A Date: Aug 2009 ~ :!;:: Taken from Stratigraphic Section near Water Well #3 Author: HRR Drafted By: D.Sledd
Page 1-25 Revision 5.1B
Energy Fuels Resources (USA) Inc. White Mesa Mill Reclamation Plan
1.5.1.2 Hydrogeologic Setting
The site is located within a dry to arid continental climate region with an average annual precipitation of
less than 13.3 in. and an annual lake evaporation rate of approximately 47.6 inches. Recharge to aquifers (such as the Entrada/Navajo) occurs primarily along the mountain fronts (for example, the Henry, Abajo,
and La Sal Mountains), and along the flanks of folds such as Comb Ridge Monocline.
The Entrada/Navajo aquifer can yield significant quantities of water to wells (hundreds of gallons per minute [gpm]). Although the water quality and productivity of the Entrada/Navajo aquifer are generally
good, the depth of the aquifer (approximately 1,200 ft below land surface [bls]) makes access difficult.
1.5.1.3 Perched Zone Hydrogeology
Perched groundwater beneath the site occurs primarily within the Burro Canyon Formation, although in areas having greater saturated thicknesses, perched groundwater extends into the overlying Dakota
Sandstone. Perched groundwater originates mainly from precipitation and local recharge sources such as unlined reservoirs (Kirby, 2008). Perched groundwater at the site has a generally low quality due to high total dissolved solids (TDS) and is used primarily for stock watering and irrigation in the areas upgradient
(north) of the site. As of the first quarter of 2016, TDS concentrations measured in water sampled from on-site perched monitoring wells range between approximately 1,000 and 8,300 mg/1. The saturated thickness
of the perched water zone generally increases to the north of the site, increasing the yield of the perched
zone to wells installed north of the site. Perched water is supported within the Burro Canyon Formation by the underlying, fine-grained Brushy Basin Member.
The Brushy Basin Member is primarily composed of bentonitic mudstones, siltstones, and claystones and
is considered an aquiclude. Figure 1.5-2 is a contour map showing the approximate elevation of the contact of the Burro Canyon Formation with the Brushy Basin Member, which essentially forms the base of the
perched water zone at the site. The elevations of Ruin Spring and Westwater Seep, which occur at the
contact between the Brushy Basin Member and the Burro Canyon Formation, are included in the contouring. Abandoned borings/wells, monitoring wells, and piezometers shown on Figure 1.5-2 consist of
surveyed perched zone monitoring wells and piezometers that include temporary perched zone borings and
monitoring wells associated with the chloroform and nitrate plumes located east and northeast (cross gradient to upgradient) of the tailings cells. TW-4-series wells, MW-4, MW-26, and MW-32 are chloroform
program wells and TWN-series wells are nitrate program wells. Contact elevations are based on monitoring
well drilling and geophysical logs and surveyed land surface elevations.
As indicated on Figure 1.5-2, the contact generally dips to the south/southwest beneath the site. A structural
high that is evident in the Brushy Basin Member/Burro Canyon Formation contact extends from beneath Cell 4B southwest to the vicinity of abandoned boring DR-18. A paleovalley in the Brushy Basin Member surface is present along the western mesa rim to the west of the structural high.
The permeability of the Dakota Sandstone and Burro Canyon Formation at the site is generally low. No significant joints or fractures within the Dakota Sandstone or Burro Canyon Formation have been documented in any wells or borings installed across the site (Knight Piésold, 1998). Any fractures observed
in cores collected from site borings are typically cemented, showing no open space.

HYDRO
GEO
CHEM, INC.
APPROVED DATE REFERENCE FIGURE
1 mile
CORRAL CANYON
CORRAL SPRINGS
COTTONWOOD
ENTRANCE SPRING
RUIN SPRING
WESTWATER
Cell 1
Cell 2
Cell 3
Cell 4A
Cell 4B
MW-01
MW-02
MW-03
MW-11
MW-14MW-15
MW-17
MW-18
MW-19
MW-20
MW-21
MW-22
MW-23
MW-24
MW-25
MW-26
MW-27
MW-28
MW-29
MW-30
MW-31
MW-32
MW-33
MW-34MW-37
TW4-01
TW4-10
TW4-34
TWN-01
TWN-02
TWN-03
TWN-04
TWN-05
TWN-06
TWN-07
TWN-08
TWN-09
TWN-10
TWN-11 TWN-12
TWN-13
TWN-14
TWN-15
TWN-16
TWN-17
TWN-18
TWN-19
PIEZ-01
PIEZ-02
PIEZ-03
PIEZ-04
PIEZ-05
TW4-03
TW4-05
TW4-09
TW4-12
TW4-13
TW4-14
TW4-18
TW4-31
TW4-32
MW-12
TW4-11TW4-16
TW4-19
TW4-27
MW-35
MW-36
TW4-04
TW4-07
TW4-21
TW4-24
TW4-25
TW4-26
TW4-02
TW4-08
MW-04
MW-05
TW4-06
TW4-22
TW4-23
TW4-20
TW4-28
TW4-29 TW4-30
TW4-33
TW4-35
TW4-36
TW4-37
DR-05 DR-06 DR-07
DR-08
DR-09
DR-10 DR-11 DR-12 DR-13
DR-14 DR-15
DR-17
DR-19 DR-20 DR-21
DR-22
DR-23
DR-24
5536
5492
5466
5479
54775473
5470
5518
5511
5449
5470
5396
5483
5502
5499
5537
5515
5491
5508
5489
5494
5491
5475
5487
5481
55265506
5497
5511
5552
5536
5558
5501
5477
5544
5534
5542
5519
5507
5536
5545
5507
5552
5562
5543 5560
5518
5528
5525
5561
5536
5502
5555
5491
5494
5534
5522
5517
5521
5517
5520
5525
5521
5499
5515
5518
5536
5532
55365481
55025509
5494
5509
5517
5512
5511
55135500
55165513
5515
5515
5523
5518
5522
5521
5464 5470 5483 5489
5466
5455
5479 5478 5487 5473
5447 5461 5451
5447 5467
5451 5425 5407
5425
5418
5400
5386
5624
5383
5234
5560
5380
5468
(not included)
(not included)
(not included)
(not included)
abandoned abandoned
abandoned
abandoned
abandoned abandoned
abandoned
abandoned abandoned
abandoned5495
MW-16
abandoned
abandoned
abandoned
abandoned
DR-02
DR-16
DR-18
DR-25
EXPLANATION
perched monitoring well showing
elevation in feet amsl
perched piezometer showing
elevation in feet amsl
seep or spring showing
elevation in feet amsl
KRIGED TOP OF BRUSHY BASIN MEMBER
WHITE MESA SITE
H:/718000/RelamationPlan/Ubb0316_Rec.srf
MW-5
PIEZ-1
RUIN SPRING
temporary perched monitoring well
showing elevation in feet amsl
temporary perched nitrate monitoring
well showing elevation in feet amsl
TW4-12
TWN-7
5491
5521
5545
5552
5380
abandoned (surveyed) boring
showing elevation in feet amsl
DR-25
5396
1.5-2
Page 1-27 Revision 5.1B
Energy Fuels Resources (USA) Inc. White Mesa Mill Reclamation Plan
Based on samples collected during installation of wells MW-16 (immediately downgradient of tailings cell
3 and abandoned prior to construction of cell 4B) and MW-17 (cross-gradient of the tailings cells complex (Figure 1.5-2)), porosities of the Dakota Sandstone range from 13.4 percent to 26 percent, averaging 20
percent. Water saturations range from 3.7 percent to 27.2 percent, averaging 13.5 percent. The average
volumetric water content is approximately 3 percent. The hydraulic conductivity of the Dakota Sandstone, based on packer tests in borings installed at the site, ranges from 2.71E-06 centimeters per second (cm/s)
to 9.12E-04 cm/s, with a geometric average of 3.89E-05 cm/s (Titan, 1994a).
The average porosity of the Burro Canyon Formation is similar to that of the Dakota Sandstone. Based on samples collected from the Burro Canyon Formation at MW-16 (abandoned), porosity ranges from 2
percent to 29.1 percent, averaging 18.3 percent. Water saturations of unsaturated materials range from 0.6
percent to 77.2 percent, averaging 23.4 percent. Titan (1994a) reported that the hydraulic conductivity of the Burro Canyon Formation ranges from 1.9E-07 to 1.6E-03 cm/s, with a geometric mean of 1.1E-05 cm/s,
based on the results of 12 pump/recovery tests performed in monitoring wells and 30 packer tests performed in borings prior to 1994.
Subsequent hydraulic testing of perched zone wells yielded a site-wide hydraulic conductivity range of 2 x
10-8 to 0.01 cm/s (HGC, 2014). In general, the highest permeabilities and well yields are immediately northeast and east (upgradient to cross gradient) of the tailings cells. A relatively continuous, higher
permeability zone (associated with poorly indurated coarser-grained materials in the general area of the
chloroform plume) has been inferred to exist in this portion of the site. Analysis of drawdown data collected from this zone during long-term pumping of MW-4, MW-26 (formerly TW4-15), and TW4-19 yielded
estimates of hydraulic conductivity ranging from 4E-05 to 1E-03 cm/s. The decrease in perched zone
permeability south, southwest, and southeast of TW4-4, based on hydraulic tests at TW4-6, TW4-23, TW4-26, TW4-27, TW4-29 through TW4-31, and TW4-33 through TW4-35 indicate that this higher permeability
zone “pinches out”.
Hydraulic tests performed at groups of wells and piezometers located northeast (upgradient) of, in the immediate vicinity of, and southwest (downgradient) of the tailings cells indicate generally lower
permeabilities compared with the area of the chloroform plume. The following results from HGC (2014)
are based on analysis of automatically logged slug test data using the KGS solution available in AQTESOLVE (HydroSOLVE, 2000).
Testing of 19 TWN-series wells installed in the northeast portion of the site as part of nitrate investigation
activities yielded a hydraulic conductivity range of approximately 3.6 x 10-7 to 0.01 cm/s with a geometric average of approximately 6 x 10-5 cm/s. The value of 0.01 cm/s estimated for TWN-16 is the highest
measured at the site, and the value of 3.6 x 10-7 cm/s estimated for TWN-7 is one of the lowest measured at the site. Testing of MW-series wells MW-23 through MW-32 installed between and at the margins of the tailings cells in 2005 (and using the higher estimate for MW-23) yielded a hydraulic conductivity range of
approximately 2 x 10-7 to 1 x 10-4 cm/s with a geometric average of approximately 2 x 10-5 cm/s. Hydraulic tests conducted at DR-series piezometers installed as part of the southwest area investigation downgradient
of the tailings cells yielded hydraulic conductivities ranging from approximately 2 x 10-8 to 4 x 10-4 cm/s
with a geometric average of 9.6 x 10-6 cm/s. The low permeabilities and shallow hydraulic gradients downgradient of the tailings cells result in average perched groundwater pore velocity estimates that are
among the lowest on site (approximately 0.26 feet per year (ft/yr) to 0.91 ft/yr).
The extensive hydraulic testing of perched zone wells at the site indicates that perched zone permeabilities are generally low with the exception of the apparently isolated zone of higher permeability associated with
the chloroform plume east to northeast (cross-gradient to upgradient) of the tailings cells. The geometric
Page 1-28 Revision 5.1B
Energy Fuels Resources (USA) Inc. White Mesa Mill Reclamation Plan
average hydraulic conductivity (less than 1 x 10-5 cm/s) of the DR-series piezometers which cover an area
nearly half the size of the total monitored area at White Mesa (excluding MW-22), is nearly identical to the geometric average hydraulic conductivity of 1.01 x 10-5 cm/s reported by Titan (1994a), and is within the
range of 5 to 10 feet per year (ft/yr) [approximately 5 x 10-6 cm/s to 1 x 10-5 cm/s] reported by Dames and
Moore (1978b) for the (saturated) perched zone during the initial site investigation.
Because of the generally low permeability of the perched zone beneath the site, well yields are typically
low (generally less than 0.5 gpm). Many of the perched monitoring wells purge dry and take several hours
to more than a day to recover sufficiently for groundwater samples to be collected. Sufficient productivity can generally be obtained only in areas where the saturated thickness is greater, which is the primary reason
that the perched zone has been used on a limited basis as a water supply to the north (upgradient) of the
site, but has not been used downgradient of the site. Within areas on the east side of the site that have greater saturated thicknesses due to proximity to the two northern wildlife ponds, and that intercept the
higher permeability materials associated with the chloroform plume, well yields of as much as 4 gpm were achievable. However, since water delivery to the two northern wildlife ponds ceased in 2012, saturated thicknesses and well productivities in this area have diminished. As of the fourth quarter of 2015,
sustainable, average pumping rates at chloroform and nitrate pumping wells ranged from less than 0.1 to approximately 1 gpm
1.5.1.4 Perched Groundwater Flow
Perched groundwater flow at the site is generally from northeast to southwest. Figure 1.5-3 displays the
local perched groundwater elevation contours at the Mill, as measured in the first quarter of 2016. Depression of the perched water table occurs near chloroform pumping wells MW-4, MW-26, TW4-1,
TW4-2, TW4-4, TW4-11, TW4-19, TW4-20, TW4-21, TW4-22 and TW4-37, and near nitrate pumping
wells TW4-22, TW4-24, TW4-25, and TWN-2. These wells are pumped to reduce chloroform and nitrate mass in the perched zone east and northeast of the tailings cells. As shown on Figure 1.5-3, beneath and
south of the tailings management cells, in the west central portion of the site, perched water flow is south-
southwest to southwest. Flow on the western margin of the mesa is generally south, approximately parallel to the rim (where the Burro Canyon Formation [and perched water zone] is terminated by erosion). On the
eastern side of the site perched water flow is also generally to the south. Because of mounding near wildlife
ponds, flow direction ranges locally from westerly (west of the ponds) to easterly (east of the ponds).
Dry areas in the perched zone southwest of the tailings management cells occur along the structural high in
the Brushy Basin Member/Burro Canyon Formation contact that extends from beneath tailings cell 4B southwest to the vicinity of abandoned boring DR-18. In places along this structural high the contact rises above the perched water elevation creating the dry areas shown on Figure 1.5-3.
An apparent groundwater divide occurs west of Cell 4B near DR-2. Water north of the apparent divide flows primarily north-northeast to Westwater Seep and water south of the apparent divide flows south toward Ruin Spring.

HYDRO
GEO
CHEM, INC.
APPROVED DATE REFERENCE FIGURE
1 mile
CORRAL CANYON
CORRAL SPRINGS
COTTONWOOD
ENTRANCE SPRING
RUIN SPRING
WESTWATER
Cell 1
Cell 2
Cell 3
Cell 4A
Cell 4B
MW-01
MW-02
MW-03
MW-11
MW-14MW-15
MW-17
MW-18
MW-19
MW-20
MW-21
MW-22
MW-23
MW-24
MW-25
MW-26
MW-27
MW-28
MW-29
MW-30
MW-31
MW-32
MW-33
MW-34MW-37
TW4-01
TW4-10
TW4-34
TWN-01
TWN-02
TWN-03
TWN-04
TWN-05
TWN-06
TWN-07
TWN-08
TWN-09
TWN-10
TWN-11 TWN-12
TWN-13
TWN-14
TWN-15
TWN-16
TWN-17
TWN-18
TWN-19
PIEZ-01
PIEZ-02
PIEZ-03
PIEZ-04
PIEZ-05
TW4-03
TW4-05
TW4-09
TW4-12
TW4-13
TW4-14
TW4-18
TW4-31
TW4-32
MW-12
TW4-11TW4-16
TW4-19
TW4-27
MW-35
MW-36
TW4-04
TW4-07
TW4-21
TW4-24
TW4-25
TW4-26
TW4-02
TW4-08
MW-04
MW-05
TW4-06
TW4-22
TW4-23
TW4-20
TW4-28
TW4-29 TW4-30
TW4-33
TW4-35
TW4-36
TW4-37
DR-05 DR-06 DR-07
DR-08
DR-09
DR-10 DR-11 DR-12 DR-13
DR-14 DR-15
DR-17
DR-19 DR-20 DR-21
DR-22
DR-23
DR-24
5584
5504
5473
5525
54855494
5504
5586
5594
5455
dry
5451
5498
5509
5536
5574
5545
5514
5540
5548
dry
5492
5494
5493
5491
55735561
5548
5579
5591
5590
5589
5533
5526
5586
5594
5595
5587
abandoned
5587
5564
abandoned
abandoned
abandoned
abandoned abandoned
abandoned
5589
abandoned
5605
abandoned
5585
5608
5503
5501
5576
5540
5542
5579
5568
5533
5566
5572
5561
5528
5542
5576
5575
55315561
55765566
5538
5532
5535
5537
5577
55275525
55705561
5533
5529
5534
5526
5561
5570
5483 5485 5492
5474
5480
5483 5488 5489 5487
5467 5466
5454
5455 5444 5421
5424
5426
5417
5624
5383
5234
5560
5380
5468
(not included)
EXPLANATION
perched monitoring well showing
elevation in feet amsl
perched piezometer showing
elevation in feet amsl
seep or spring showing
elevation in feet amsl
KRIGED 1st QUARTER, 2016 WATER LEVELS
WHITE MESA SITE
H:/718000/ReclamationPlan/Uwl0316_Rec.srf
MW-5
PIEZ-1
RUIN SPRING
temporary perched monitoring well
showing elevation in feet amsl
temporary perched nitrate monitoring
well showing elevation in feet amsl
TW4-12
TWN-7
5503
5579
5564
5591
5380
estimated dry area
NOTES: MW-4, MW-26, TW4-1, TW4-2, TW4-4, TW4-11,TW4-19, TW4-20, TW4-21 and TW4-37 are chloroform pumping wells; TW4-22, TW4-24, TW4-25, and TWN-2 are nitrate pumping wells
TW4-11 water level is below the base of the Burro Canyon Formation
1.5-3
Page 1-30 Revision 5.1B
Energy Fuels Resources (USA) Inc. White Mesa Mill Reclamation Plan
Perched zone hydraulic gradients currently range from a maximum of approximately 0.096 ft/ft east of
tailings cell 2 (north of pumping well TW4-11) to approximately 0.0042 ft/ft west-southwest of Cell 4B (between DR-7 and DR-5). The overall average site hydraulic gradient of approximately 0.011 ft/ft
(between TWN-19 and Ruin Spring) is similar to the average hydraulic gradient downgradient of the
tailings management cells of approximately 0.012 ft/ft (between MW-37 and Ruin Spring).
1.5.1.5 Perched Zone Hydrogeology Beneath and Downgradient of The Tailings Management Cells
Based on measurements at non-pumping wells, 1st Quarter, 2016 perched water depths ranged from
approximately 32 feet in the northeastern portion of the site (adjacent to the wildlife ponds) to
approximately 114 feet at the southwest margin of Cell 3 (Figure 1.5-4). Based on measurements at non-pumping wells, 1st Quarter, 2016 perched zone saturated thicknesses ranged from approximately 83 ft in
the northeast portion of the site to less than 1 ft in the southwest portion of the site (Figure 1.5-5). The
relatively large saturated thicknesses in the northeastern portion of the site are related to past seepage from the northern wildlife ponds located northeast of the tailings management cells.
Water levels in DR-22 and chloroform pumping well TW4-11 are below the top of the Brushy Basin Member, yielding saturated thicknesses of zero. Casings in DR-22 and TW4-11 extend approximately 2.5 feet and 11.5 feet, respectively, below the Brushy Basin Member contact. Although water is present in the
bottom of the DR-22 casing, the level is below the Brushy Basin contact. The water level in TW4-11 is maintained at or below the Brushy Basin contact by pumping.
Areas of small saturated thickness (less than 5 feet) occur west and southwest of the tailings management
cells. As shown in Figures 1.5-4 and 1.5-5, an area of small saturated thickness extends between Westwater Seep and the southwest portion of Cell 4B, encompassing DR-6 and DR-10. As discussed in HGC (2014),
perched water flows westward from the area of the tailings cells through the area of low saturated thickness
between DR-6 and DR-10, into an area having saturated thicknesses several times larger than at DR-6 and DR-10. The transmissivity (the product of hydraulic conductivity and saturated thickness) of the area of
low saturated thickness is two to three orders of magnitude lower than for the area of larger saturated
thickness to the west (near DR-2 [abandoned], DR-5, and DR-9). Water flows out of the area of larger saturated thickness (near DR-2 [abandoned] and DR-5) to the northeast toward known discharge point
Westwater Seep and to the south through a paleovalley in the Brushy Basin Member surface towards known
discharge point Ruin Spring. The relationship between perched water and seeps and springs is discussed in more detail in Section 1.5.2.
Darcy’s Law calculations presented in HGC (2014) indicate that an additional water source is needed to
maintain the relatively large saturated thicknesses west of the area of low saturated thickness encompassing DR-6 and DR-10; otherwise Westwater Seep and the paleovalley to the south would drain the area of larger
saturated thickness more quickly than water was supplied. The most likely source of additional water to the area of larger saturated thickness is infiltration of precipitation.

HYDRO
GEO
CHEM, INC.
APPROVED DATE REFERENCE FIGURE
1 mile
CORRAL CANYON
CORRAL SPRINGS
COTTONWOOD
ENTRANCE SPRING
RUIN SPRING
WESTWATER
Cell 1
Cell 2
Cell 3
Cell 4A
Cell 4B
MW-01
MW-02
MW-03
MW-11
MW-14MW-15
MW-17
MW-18
MW-19
MW-20
MW-21
MW-22
MW-23
MW-24
MW-25
MW-26
MW-27
MW-28
MW-29
MW-30
MW-31
MW-32
MW-33
MW-34MW-37
TW4-01
TW4-10
TW4-34
TWN-01
TWN-02
TWN-03
TWN-04
TWN-05
TWN-06
TWN-07
TWN-08
TWN-09
TWN-10
TWN-11 TWN-12
TWN-13
TWN-14
TWN-15
TWN-16
TWN-17
TWN-18
TWN-19
PIEZ-01
PIEZ-02
PIEZ-03
PIEZ-04
PIEZ-05
TW4-03
TW4-05
TW4-09
TW4-12
TW4-13
TW4-14
TW4-18
TW4-31
TW4-32
MW-12
TW4-11TW4-16
TW4-19
TW4-27
MW-35
MW-36
TW4-04
TW4-07
TW4-21
TW4-24
TW4-25
TW4-26
TW4-02
TW4-08
MW-04
MW-05
TW4-06
TW4-22
TW4-23
TW4-20
TW4-28
TW4-29 TW4-30
TW4-33
TW4-35
TW4-36
TW4-37
DR-05 DR-06 DR-07
DR-08
DR-09
DR-10 DR-11 DR-12 DR-13
DR-14 DR-15
DR-17
DR-19 DR-20 DR-21
DR-22
DR-23
DR-24
64
110
82
86
113106
72
72
61
86
dry
66
114
113
77
54
75
100
75
68
dry
108
112
110
109
6264
77
65
65
39
49
58
58
62
32
39
55
ABANDON
78
85
ABANDON
ABANDON
ABANDON
ABANDON ABANDON
ABANDON
61
ABANDON
47
ABANDON
60
53
106
108
57
73
79
46
52
80
64
68
51
91
83
64
62
9263
6565
69
72
67
72
40
7679
5964
74
79
72
74
56
62
83 94 92
51
86
78 98 91 70
76 93
65
63 55 101
61
70
44
EXPLANATION
perched monitoring well showing
depth to water in feet
perched piezometer showing
depth to water in feet
seep or spring
1st QUARTER, 2016 DEPTHS TO
PERCHED WATER (FROM MEASURING POINT)
WHITE MESA SITE
H:/718000/ReclamationPlan/Udtw0316_Rec.srf
MW-5
PIEZ-1
RUIN SPRING
temporary perched monitoring well
showing depth to water in feet
temporary perched nitrate monitoring
well showing depth to water in feet
TW4-12
TWN-7
106
46
85
65
estimated dry area
NOTES: MW-4, MW-26, TW4-1, TW4-2, TW4-4, TW4-11,TW4-19, TW4-20, TW4-21 and TW4-37 are chloroform pumping wells; TW4-22, TW4-24, TW4-25, and TWN-2 are nitrate pumping wells
TW4-11 water level is below the base of the Burro Canyon Formation
saturated thickness
estimated to be < 5 feet
1.5-4
HYDRO
GEO
CHEM, INC.
APPROVED DATE REFERENCE FIGURE
1 mile
CORRAL CANYON
CORRAL SPRINGS
COTTONWOOD
ENTRANCE SPRING
RUIN SPRING
WESTWATER
Cell 1
Cell 2
Cell 3
Cell 4A
Cell 4B
MW-01
MW-02
MW-03
MW-11
MW-14MW-15
MW-17
MW-18
MW-19
MW-20
MW-21
MW-22
MW-23
MW-24
MW-25
MW-26
MW-27
MW-28
MW-29
MW-30
MW-31
MW-32
MW-33
MW-34MW-37
TW4-01
TW4-10
TW4-34
TWN-01
TWN-02
TWN-03
TWN-04
TWN-05
TWN-06
TWN-07
TWN-08
TWN-09
TWN-10
TWN-11 TWN-12
TWN-13
TWN-14
TWN-15
TWN-16
TWN-17
TWN-18
TWN-19
PIEZ-01
PIEZ-02
PIEZ-03
PIEZ-04
PIEZ-05
TW4-03
TW4-05
TW4-09
TW4-12
TW4-13
TW4-14
TW4-18
TW4-31
TW4-32
MW-12
TW4-11TW4-16
TW4-19
TW4-27
MW-35
MW-36
TW4-04
TW4-07
TW4-21
TW4-24
TW4-25
TW4-26
TW4-02
TW4-08
MW-04
MW-05
TW4-06
TW4-22
TW4-23
TW4-20
TW4-28
TW4-29 TW4-30
TW4-33
TW4-35
TW4-36
TW4-37
DR-05 DR-06 DR-07
DR-08
DR-09
DR-10 DR-11 DR-12 DR-13
DR-14 DR-15
DR-17
DR-19 DR-20 DR-21
DR-22
DR-23
DR-24
48
11
7
47
821
34
68
83
6
dry
55
15
7
38
36
30
24
31
59
dry
2
19
6
10
4755
51
68
39
54
32
32
50
41
61
54
68
Abandoned
51
19
Abandoned
Abandoned
Abandoned
Abandoned Abandoned
Abandoned
61
Abandoned
44
Abandoned
83
53
12
8
42
18
25
57
52
13
41
51
62
13
24
40
43
080
7458
44
23
18
24
66
1425
5448
18
13
11
8
39
49
13 2 3
8
25
3 9 2 14
19 5
7
4 19 14
0
8
17
EXPLANATION
perched monitoring well showing
saturated thickness in feet
perched piezometer showing
saturated thickness in feet
seep or spring
1st QUARTER, 2016 PERCHED ZONE
SATURATED THICKNESSES
WHITE MESA SITE
H:/718000/ReclamationPlan/Usat0316_Rec.srf
MW-5
PIEZ-1
RUIN SPRING
temporary perched monitoring well
showing saturated thickness in feet
temporary perched nitrate monitoring
well showing saturated thickness in feet
TW4-12
TWN-7
12
57
19
39
estimated dry area
NOTES: MW-4, MW-26, TW4-1, TW4-2, TW4-4, TW4-11,TW4-19, TW4-20, TW4-21 and TW4-37 are chloroform pumping wells; TW4-22, TW4-24, TW4-25, and TWN-2 are nitrate pumping wells
TW4-11 water level is below the base of the Burro Canyon Formation
saturated thickness
estimated to be < 5 feet
1.5-5
Page 1-33 Revision 5.1B
Energy Fuels Resources (USA) Inc. White Mesa Mill Reclamation Plan
As discussed above, perched zone hydraulic gradients currently range from a maximum of approximately
0.096 feet per foot (ft/ft) east of Cell 2 to approximately 0.0042 ft/ft west-southwest of the tailings management cells, between DR-7 and DR-5. The average hydraulic gradient between the downgradient
edge of tailings Cell 4B and Ruin Spring is approximately 0.012 ft/ft, similar to the overall site hydraulic
gradient (between TWN-19 and Ruin Spring) of approximately 0.011 ft/ft. The combination of relatively low hydraulic conductivities (geometric average of approximately 1 x 10-5 cm/s) and relatively flat
hydraulic gradients downgradient of the tailings management cells imply small groundwater velocities and
large travel times.
1.5.2 Seep and Spring Occurrence and Hydrogeology
Perched groundwater discharges in seeps and springs located to the west, south, east, and southeast of the
site along the margins of White Mesa.
All seeps and springs examined have associated cottonwood trees that suggest a relatively consistent source
of water. Seeps and springs occurring at the margins of White Mesa are typically associated with sandstones of the Burro Canyon Formation, except Cottonwood Seep, which is associated with the lower portion of the Brushy Basin Member of the Morrison Formation. Figure 1.5-6 shows the December 2009 surveyed
locations of seeps and springs and the Frog Pond. As shown on Figure 1.5-6, all springs and seeps are located within drainages, and except for Cottonwood Seep, are located at the mesa margins. Table 1.5-1
provides surveyed locations and elevations of the seeps and springs and the Frog Pond. The December
2009 seep and spring survey data shown in Table 1.5-1 were used in subsequent reporting where seep and spring locations and elevations were relevant.
Table 1.5-1
Surveyed Locations and Elevations of Seeps and Springs and the Frog Pond (December 2009)
Location Latitude (N) Longitude (W) Elevation
FROG POND 37°33'03.5358" 109°29'04.9552" 5589.56
CORRAL CANYON 37°33'07.1392" 109°29'12.3907" 5623.97
ENTRANCE 37°32'01.6487" 109°29'33.7005" 5559.71
CORRAL SPRINGS 37°29'37.9192" 109°29'35.8201" 5383.35
RUIN SPRING 37°30'06.0448" 109°31'23.4300" 5380.03
COTTONWOOD 37°31'21.7002" 109°32'14.7923" 5234.33
WEST WATER 37°31'58.5020" 109°31'25.7345" 5468.23
Re-Surveyed July 2010
RUIN SPRING 37°30'06.0456" 109°31'23.4181" 5380.01
COTTONWOOD 37°31'21.6987" 109°32'14.7927" 5234.27
WEST WATER 37°31'58.5013" 109°31'25.7357" 5468.32
!
!
!
!
!
!
!
CORRAL CANYON
5624
CORRAL SPRINGS
5383
COTTONWOOD
5234
ENTRANCE SPRING
5560
FROG POND
5590
RUIN SPRING
5380
WESTWATER
5468
Approved Date Author Date File Name Figure
HYDRO
GEO
CHEM, INC.
SEEPS AND SPRINGS
ON USGS TOPOGRAPHIC BASE
WHITE MESA
7180002G09/17/10SJS 707/16/10DRS
0.5 0 0.5 10.25
Mile
Cell No. 1
Cell No. 3
Cell No. 2
Cell No. 4A
NK:\718000\GIS\7180002G.mxd: Friday, September 17, 2010 1:02:59 PM
Cell No. 4B
WESTWATER
5468
Seep or Spring
Elevation (feet) above mean sea level
Page 1-35 Revision 5.1B
Energy Fuels Resources (USA) Inc. White Mesa Mill Reclamation Plan
As discussed in Section 1.1.5.4, Figure 1.5-3 shows first quarter 2016 perched water level contours and the
locations and elevations of seeps and springs. Perched water level contours are based on water levels measured in the perched groundwater monitoring wells shown on Figure 1.5-3, and include elevations of
all seeps and springs except Cottonwood Seep. Based on Figure 1.5-3, Corral Canyon Seep is located
upgradient of the tailings management cells, and Entrance Spring and Corral Springs are located cross gradient of the tailings management cells. Both Entrance Spring and Corral Springs are separated from the
tailings management cells by a groundwater divide. Westwater Seep is the closest discharge point west of
the tailings management cells and Ruin Spring is the closest discharge point south-southwest of the tailings management system. Ruin Spring is located downgradient of approximately the southeastern 2/3 of the
tailings management system, and Westwater Seep appears to be downgradient of approximately the
northwestern 1/3 of the tailings management system. Cottonwood Seep is neither cross gradient nor downgradient of the tailings management cells because it is interpreted to receive water from a source other
than the perched groundwater system hosted by the Burro Canyon Formation.
The relationship between seeps and springs and the geology of White Mesa are shown on Figure 1.5-7. The geology on Figure 1.5-7 is based on Kirby (2008) and Hintze, et al. (2000), and has been modified locally
by field reconnaissance. The Burro Canyon Formation and the Dakota Sandstone are undifferentiated on the geologic map. As shown on Figure 1.5-7, all seeps and springs except Cottonwood Seep are associated
with outcrops of the Burro Canyon Formation (and/or Dakota Sandstone). Some are also associated with
mixed eolian and alluvial deposits stratigraphically above the Burro Canyon Formation and/or Dakota Sandstone. Ruin Spring and Westwater Seep are located at the contact between the Burro Canyon
Formation and underlying Brushy Basin Member. Westwater Seep (where typically sampled) occurs within
alluvium at the Burro Canyon Formation/Brushy Basin Member contact whereas Ruin Spring occurs at the contact but above the alluvium in the associated drainage. Corral Canyon Seep, Entrance Spring, and Corral
Springs occur within alluvium near the contact of the alluvium with the Burro Canyon Formation, but at an
elevation above the contact between the Burro Canyon Formation and Brushy Basin Member. In contrast, Cottonwood Seep is mapped within the Brushy Basin Member, approximately 1,500 feet west of the
termination of the Burro Canyon Formation at the western mesa rim, and stratigraphically more than 200
feet below the contact between the Burro Canyon Formation and Brushy Basin Member.
The Burro Canyon Formation (and perched water zone) does not exist at Cottonwood Seep because it has
been eroded. Cottonwood Seep is interpreted to receive water primarily from a source stratigraphically
below the Burro Canyon Formation and from a hydrogeologic system other than the perched water system at the site. The primary source of Cottonwood Seep (and “2nd Seep” immediately to the north of
Cottonwood Seep) is interpreted to be coarser-grained materials within the lower portion of the Brushy Basin Member or upper portion of the Westwater Canyon Member.

0.5 10
Mile
E
E
E
E
E
E
E
Cell No. 1
Cell No. 2
Cell No. 3
Cell No. 4A
Qh
Qlbb
Qlbb
Qlbb
Kdb
Kdb
Kdb
Kdb
Kdb
Kdb
Jmb
Jmb
Jmb
Jmb
Jmb
Jmb
Qea
Qea
Qea
Qea
Qa
Qa
Qa
Qa
Qa
Kdb
Kdb
Jmb
Qa
Cell No. 4B
Jmw
Jmr
Qh
Qea
Jmr
Jmw
Kdb
Jmb
Kdb
Kdb
CORRAL CANYON
CORRAL SPRINGS
COTTONWOOD
ENTRANCE SPRING
FROG POND
RUIN SPRING
WESTWATER
GEOLOGIC MAP
WHITE MESA, UTAH
SJSÒApproved Date File Figure
HYDRO
GEO
CHEM, INC.12/28/11
Geological Map of the Blanding Area, San Juan County, Utah (modified from Haynes et al., 1962; Dames & Moore, 1978 and Kirby, 2008)
Base Map Prepared from Portions of the Blanding South, Black Mesa Butte, Big Bench and No Mans Land U.S.G.S. 7.5' Quadrangles.
K:\718000\GIS\Geology
Contact - dashed where uncertain
E Seep or Spring
EXPLANATION
Tailing Cell
Artificial cut and fill
Stream alluvium
Slumps and landslides, Brushy Basin
Mixed eolian and alluvial deposits
Dakota and Burro Canyon Formations (undivided)
Brushy Basin Member of the Morrison Formation
Westwater Canyon Member of the Morrison Formation
Recapture Member of the Morrison Formation
QhQhQhQh
QaQaQaQa
QlbbQlbbQlbbQlbb
QeaQeaQeaQea
KdbKdbKdbKdb
JmbJmbJmbJmb
JmwJmwJmwJmw
JmrJmrJmrJmr
Page 1-37 Revision 5.1B
Energy Fuels Resources (USA) Inc. White Mesa Mill Reclamation Plan
Springs occurring within alluvium deposited within drainages cutting the Burro Canyon Formation may or
may not receive a contribution from perched water. Except for Ruin Spring (and “2nd Seep” immediately to the north of Cottonwood Seep), each spring and seep occurs in alluvial materials within a drainage that
will supply surface water during wet periods and help to recharge any alluvial materials within the drainage
as well as bedrock near the drainage. Westwater Seep, Corral Canyon Seep, Entrance Spring, and Corral Springs may therefore receive water from both alluvial and bedrock (perched water) sources. Corral
Springs, located immediately downgradient of a stock pond, may receive water primarily from alluvium
recharged from the stock pond. Any alluvial materials within the drainage or marginal bedrock that are recharged during precipitation events will likely, at least temporarily, yield water to the seeps.
HGC (2014) discusses the potential for enhanced recharge from precipitation along the mesa margins where
Dakota Sandstone and/or Burro Canyon Formation are exposed by erosion. Such recharge is expected to temporarily enhance flow at nearby seeps and springs draining the Burro Canyon Formation and/or Dakota
Sandstone. The area of increased saturated thickness west of DR-6 and DR-10 is likely the result of recharge enhanced by the direct exposure of weathered Dakota Sandstone and Burro Canyon Formation, and the thinness or absence of any overlying low permeability materials such as the Mancos Shale (Figure 1.5-7).
Although seep and spring elevations (except Cottonwood Seep) have been included in perched water level contour maps (such as Figure 1.5-3) since the HGC (2010b) investigation, the assumption that the seep or
spring elevation is representative of the perched water elevation is likely to be correct only in cases where
the feature receives most or all of its flow from the perched water, and where the supply is relatively continuous (for example, Ruin Spring). The uncertainty that results from including seeps and springs in
the contouring of perched water levels must be considered when interpreting perched water level data.
Using amethod similar to that presented in HGC (2009a), perched water pore velocities and travel times between the tailings management cells and Ruin Spring and between the tailings management cells and
Westwater Seep were calculated in HGC (2014) using first Quarter 2014 water levels. As discussed in
more detail in HGC (2014), the calculated travel times between the downgradient margin of cell 4B and Ruin Spring range from approximately 10,650 to 19,650 years. The calculated travel time between the
southwest corner of Cell 3 to Westwater Seep is approximately 3,230 years.
1.5.3 Groundwater Quality
1.5.3.1 Entrada/Navajo Aquifer
The Entrada and Navajo Sandstones are relatively prolific aquifers beneath and in the vicinity of the site.
Water wells at the site are screened in both of these units, and for the purposes of this discussion they will be treated as a single aquifer. Water in the Entrada/Navajo Aquifer is under artesian pressure, rising 800 to 900 ft above the top of the Entrada’s contact with the overlying Summervillle Formation; static water
levels are 390 to 500 ft below ground surface.
Within the region, this aquifer is capable of yielding domestic quality water at rates of 150 to 225 gpm. For that reason, it serves as a secondary source of water for the Mill. Additionally, two domestic water supply
wells drawing from the Entrada/Navajo Aquifer are located 4.5 miles southeast of the Mill site on the Ute Mountain Ute Reservation. Although the water quality and productivity of the Navajo/Entrada aquifer are
generally good, the depth of the aquifer (greater than1,000 ft bls) makes access difficult.
Table 1.5-2 is a tabulation of groundwater quality of the Navajo Sandstone aquifer as reported in the FES and subsequent sampling. TDS ranges from 216 to 1,110 mg/l in three samples taken over a period from
January 27, 1977, to May 4, 1977. High iron concentrations are found in the Navajo Sandstone. Because
Page 1-38 Revision 5.1B
Energy Fuels Resources (USA) Inc. White Mesa Mill Reclamation Plan
the Navajo Sandstone aquifer is isolated from the perched groundwater zone by approximately 1,000 to
1,100 ft of materials having a low average vertical permeability, sampling of the Navajo Sandstone is not required under the Mill’s previous NRC Point of Compliance monitoring program or under the GWDP.
However, samples were taken at two other deep aquifer wells (#2 and #5) on site (see Figure 1.5-8 for the
locations of these wells), on June 1, 1999 and June 8, 1999, respectively, and the results are included in Table 1.5-2.

Page 1-39 Revision 5.1B
Energy Fuels Resources (USA) Inc. White Mesa Mill Reclamation Plan
Table 1.5-2
Water Quality of the Navajo Sandstone Aquifer in the Mill Vicinity
Parameter FES, Test Well (G2R) (1/27/77 - 3/23/781)
Well #2 6/01/991 Well #5 6/08/991
Field Specific Conductivity
(umhos/cm) 310 to 400
Field pH 6.9 to 7.6
Temperature (ºC) 11 to 22
Estimated Flow m/hr (gpm) 109(20)
pH 7.9 to 8.16
Determination, mg/liter
TDS (@180ºC) 216 to 1110
Redox Potential 211 to 220
Alkalinity (as CaCOS3) 180 to 224
Hardness, total (as CaCO3) 177 to 208
Bicarbonate 226 214
Carbonate (as CO3) 0.0 <1.0 <1.0
Aluminum 0.003 0.058
Aluminum, dissolved <0.1
Ammonia (as N) 0.0 to 0.16 <0.05 <0.05
Antimony <0.001 <0.001
Arsenic, total .007 to 0.014 0.018 <0.001
Barium, total 0.0 to 0.15 0.119 0.005
Beryllium <0.001 <0.001
Boron, total <0.1 to 0.11
Cadmium, total <0.005 to 0.0 <0.001 0.018
Calcium 50.6 39.8
Calcium, dissolved 51 to 112
Chloride 0.0 to 50 <1.0 2.3
Sodium 7.3 9.8
Sodium, dissolved 5.3 to 23
Silver <0.001 <0.001
Silver, dissolved <0.002 to 0.0
Sulfate 28.8 23.6
Sulfate, dissolved (as SO4) 17 to 83
Vanadium 0.003 0.003
Vanadium, dissolved <.002 to 0.16
Manganese 0.011 0.032
Manganese, dissolved 0.03 to 0.020
Chromium, total 0.02 to 0.0 0.005 0.005
Copper, total 0.005 to 0.0 0.002 0.086
Fluoride 0.18 0.18
Fluoride, dissolved 0.1 to 0.22

1 Zero values (0.0) are below detection limits.

Page 1-40 Revision 5.1B
Energy Fuels Resources (USA) Inc. White Mesa Mill Reclamation Plan
Table 1.5-2
Water Quality of the Navajo Sandstone Aquifer in the Mill Vicinity (continued)
Parameter FES, Test Well (G2R) (1/27/77 - 3/23/781)
Well #2 6/01/991 Well #5 6/08/991
Iron, total 0.35 to 2.1 0.43 0.20
Iron, dissolved 0.30 to 2.3
Lead, total 0.02 - 0.0 <0.001 0.018
Magnesium 20.4 21.3
Magnesium, dissolved 15 to 21
Mercury, total <.00002 to 0.0 <0.001 <0.001
Molybdenum 0.001 <0.001
Molybdenum, dissolved 0.004 to 0.010
Nickel <0.001 0.004
Nitrate + Nitrate as N <0.10 <0.10
Nitrate (as N) <.05 to 0.12
Phosphorus, total (as P) <0.01 to 0.03
Potassium 3.1 3.3
Potassium, dissolved 2.4 to 3.2
Selenium <0.001 <0.001
Selenium, dissolved <.005 to 0.0
Silica, dissolved (as SiO2) 5.8 to 12
Strontium, total (as U) 0.5 to 0.67
Thallium <0.001 <0.001
Uranium, total (as U) <.002 to 0.16 0.0007 0.0042
Uranium, dissolved (as U) <.002 to 0.031
Zinc 0.010 0.126
Zinc, dissolved 0.007 to 0.39
Total Organic Carbon 1.1 to 16
Chemical Oxygen Demand <1 to 66
Oil and Grease 1
Total Suspended Solids 6 to 1940 <1.0 10.4
Turbidity 5.56 19.1
Determination (pCi/liter)
Gross Alpha <1.0
Gross Alpha + precision 1.6+1.3 to 10.2+2.6
Gross Beta <2.0
Gross Beta + precision 8+8 to 73+19
Radium 226 + precision 0.3+0.2
Radium 228 <1.0
Ra–226 + precision 0.1+.3 to 0.6+0.4
Th–230 + precision 0.1+0.4 to 0.7+2.7
Pb–210 + precision 0.0+4.0 to 1.0+2.0
Po–210 + precision 0.0+0.3 to 0.0+0.8
Source: Adapted from FES Table 2.25 with additional Mill sampling data

1 Zero values (0.0) are below detection limits.

• I :
18
19
• • • \ ••• •• ,·
21
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PROPERTY BOUNDARY
RESERVATION BOUNDARY
CANYON RIM
GROUNDWATER (WELL OR SPRING)
SAMPLING LOCATION
WATER SUPPLY WELL
t
1,500' 0 1,500'
SCALE: 1" = 3,000'
3,000'
UT83-SF
'r'f!E,RGYFUE<S
REVISIONS Project White Mesa Mill
Date By County: San Juan I State: UT
09_ 11 GM Location:
____ ____,______. GROUNDWATER (WELL OR SPRING) SAMPLING
STATIONS IN THE WHITE MESA VICINITY
FIGURE 1.5-8
Author: bm I Date: Aug 2009 I Drafted By: D.Sledd
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Energy Fuels Resources (USA) Inc. White Mesa Mill Reclamation Plan
1.5.3.2 Perched Groundwater Zone
Perched groundwater in the Dakota/Burro Canyon Formation is used on a limited basis to the north
(upgradient) of the site because the saturated thickness generally increases to the north of the site and it is more easily accessible than the Entrada/Navajo aquifer. The quality of the perched water at the site is
generally poor and extremely variable. As of the first quarter of 2016, the concentrations of TDS measured
in water sampled from upgradient and downgradient wells range between approximately 1,000 and 8,300 mg/1. Sulfate concentrations measured in far upgradient wells MW-1, MW-18 and MW-19 ranged from
580 and 2,000 mg/l, and across the site sulfate varied from 430 mg/L to 6,570 mg/L. The perched
groundwater therefore is used primarily for stock watering and irrigation. Section 1.5.3 below provides a more detailed discussion of background groundwater quality in the perched aquifer.
1.5.4 Background Groundwater Quality in the Perched Aquifer
A significant amount of historical groundwater quality data has been collected by EFRI and previous operators of the Mill for many wells at the facility.
At the time of original issuance of the GWDP, the Director had not yet completed an evaluation of the historical data, particularly with regard to data quality, and quality assurance issues. The Director also noted several groundwater quality issues that needed to be resolved prior to a determination of background
groundwater quality at the site, such as a number of constituents that exceeded their respective Groundwater Quality Standard (“GWQS”) and long-term trends in uranium in downgradient wells MW-14, MW-15 and
cross-gradient well MW-17, and a spatial high of uranium in those three wells.
As a result of the foregoing, the Director required that an Existing Well Background Report (INTERA, 2007a) be prepared to address and resolve these issues. Prior to the approval of the Existing Well
Background Report, GWCLs were set in Table 2 of the GWDP as 0.25 and 0.5 times the GWQS for Class
II and III groundwater respectively.
The Director reviewed the Existing Well Background Report and GWCLs that reflect background
groundwater quality were set for all monitoring wells except newly installed MW-35, MW-36, and MW-
37. Background data collected for the establishment of GWCLs that reflect background groundwater quality at MW-35, MW-36 and MW-37 were being collected at that time and were subsequently provided
in INTERA (2014c).
As required by the GWDP, the Existing Well Background Report addressed all available historical data, which included pre-operational and operational data, for the compliance monitoring wells under the GWDP
that existed at the date of issuance of the GWDP. The Regional Background Report (INTERA, 2007b) focused on pre-operational site data and available regional data to develop the best available set of background data that could not conceivably have been influenced by Mill operations. The New Well
Background Report (INTERA 2008), which was required by Part I.H.4 of a previous revision of the GWDP, analyzed the data collected from wells MW-3A, MW-23, MW-24, MW-25, MW-27, MW-28, MW-29, MW-30 and MW-31 (the “new” wells), which were installed in 2005, to determine background
concentrations for constituents listed in the GWDP for each new well.
The purpose of the Existing Well Background Report and the New Well Background Report was to satisfy
several objectives. First, in the case of the Existing Well Background Report, to perform a quality assurance
evaluation and data validation of the existing and historical on-site groundwater quality data in accordance with the requirements of Part I.H.3 of a previous revision of the GWDP, and to develop a database
consisting of historical groundwater monitoring data for “existing” wells and constituents.
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Energy Fuels Resources (USA) Inc. White Mesa Mill Reclamation Plan
Second, in the case of the New Well Background Report, to compile a database consisting of monitoring
results for new wells, which were collected subsequent to issuance of the GWDP, in accordance with the Mill’s Groundwater Quality Assurance Plan (“QAP”) data quality objectives.
Third, to perform a statistical, temporal and spatial evaluation of the existing well and new well data bases
to determine if there have been any impacts to groundwater from Mill activities. Since the Mill is an existing facility that has been in operation since 1980, such an analysis of historical groundwater monitoring
data was required in order to ensure that the monitoring results to be used to determine background
groundwater quality at the site establish GWCLs that have not been impacted by Mill activities.
Finally, in the event the analysis demonstrates that groundwater has not been impacted by Mill activities,
to develop a GWCL for each constituent in each well.
The Regional Background Report was prepared as a supplement to the Existing Well Background Report to provide further support to the conclusion that Mill activities have not impacted groundwater.
In evaluating the historical data for the existing wells, INTERA used the following approach:
• If historical data for a constituent in a well do not demonstrate a statistically significant upward
trend (or downward trend in pH), then the proposed GWCL for that constituent is accepted as
representative of background, regardless of whether or not the proposed GWCL exceeds the GWQS for that constituent. This is because the monitoring results for the constituent can be considered to
have been consistently representative since commencement of Mill activities or installation of the
well; and
• If historical data for a constituent in a monitoring well represent a statistically significant upward
trend (or downward trend in the case of pH), then the data is further evaluated to determine whether the trend is the result of natural causes or Mill activities. If it is concluded that the trend results
from natural causes, then the GWCL proposed in the Existing Well Background Report will be
appropriate.
After applying the foregoing approach, INTERA concluded that, other than some detected chloroform and
related organic contamination at the Mill site, which is the subject of a separate investigation and corrective
action, and that is the result of pre-Mill activities, there have been no impacts to groundwater from Mill activities.
In reaching this conclusion, INTERA noted that, even though there are a number of increasing trends in various constituents at the site, none of the trends are caused by Mill activities for the following reasons:
• Chloride is unquestionably the best indicator parameter, and there are no significant trends in
chloride which are attributable to Mill activities in any of the wells
• There are no noteworthy correlations between chloride and uranium in wells with increasing trends
in uranium, other than in far upgradient wells MW-19 and MW-18, which INTERA concluded are not related to potential tailings seepage. MW-18 and MW-19 cannot have been impacted because
they are located more than 2,200 feet northeast (upgradient) of the tailings management system and
perched water elevations in these wells are approximately 15 to 25 feet higher than perched water elevations beneath the northeast (upgradient) corner of the tailings management cells. INTERA
noted that it is inconceivable to have an increasing trend in any other parameter caused by seepage
from the Mill tailings without a corresponding increase in chloride
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Energy Fuels Resources (USA) Inc. White Mesa Mill Reclamation Plan
• There are significant increasing trends far upgradient in MW-1, MW-18 or MW-19 in uranium, sulfate, TDS, iron, selenium, thallium, ammonia and fluoride and far downgradient in MW-3 in uranium and selenium, sulfate, TDS and pH (decreasing trend). INTERA concluded that these data
provide very strong evidence that natural site phenomena are the cause of increasing trends in these constituents (decreasing with respect to pH) in other site wells and that these data also support the conclusion that natural phenomena are the cause of increasing trends in other constituents
• On a review of the spatial distribution of constituents, it is quite apparent that the constituents of concern are dispersed across the site and not located in any systematic manner that would suggest
tailings leakage.
INTERA concluded that, after extensive analysis of the data, and given the conclusion that there have been no impacts to groundwater from Mill activities, the proposed GWCLs set out in Table 16 of the Existing
Well Background Report are appropriate, and are indicative of background perched groundwater quality. INTERA did advise, however, that proposed GWCLs for all the trending constituents should be re-evaluated upon GWDP renewal to determine if they are still appropriate at the time of renewal.
In the New Well Background Report, INTERA followed the same approach used in the Existing Well Background Report for evaluating the existing well data. In addition, INTERA compared the groundwater
monitoring results for the new wells to the results for the existing wells analyzed in the Existing Well
Background Report and to the pre-operational and regional results analyzed in the Regional Background Report. This was particularly important for analysis of the new wells because available historical analytical
data for constituents in those wells post-date the commencement of Mill operations. Available data for the
new wells may not be sufficient to identify long-term constituent trends. By comparing the means for the constituents in the new wells to those for existing well and regional background data, INTERA was able to
determine if the concentrations of constituents in the new wells were consistent with site background.
After applying the foregoing approach, INTERA concluded that the new monitoring wells were not impacted by Mill activities. INTERA also concluded that the new well groundwater monitoring results
were consistent with the existing well results provided in the Existing Well Background Report and
consistent with the pre-operational and regional well, seep and spring results provided in the Regional Background Report. INTERA noted some detections of chloroform and related organic contamination and
degradation products and nitrate and nitrite in the new wells, which are the subject of separate investigations and corrective actions, but that such contamination was the result of pre-Mill activities. Corrective actions
for nitrate and chloroform, respectively, are described in: Nitrate Corrective Action Plan (CAP), [HGC,
2012a]; and Groundwater Corrective Action Plan (GCAP) found in Attachment 1, of the final Stipulation and Consent Order Docket No. UGW20-01, approved on September 14, 2015 by the Utah Department of
Environmental Quality Division of Waste Management and Radiation Control (DWMRC) [Utah
Department of Environmental Quality Division of Solid Waste and Radiation Control, 2015]).
Given its conclusion that there were no impacts to groundwater from Mill activities, INTERA concluded
that the proposed GWCLs for new wells set out in Table 10 of the New Well Background Report were
appropriate, and indicative of background perched groundwater quality. Again, INTERA noted that GWCLs for trending constituents should be re-evaluated upon GWDP renewal to determine if they are still
appropriate at the time of renewal.
Subsequent investigation of nitrate delineated the nitrate plume and indicated that ammonium sulfate handling in the vicinity of the ammonium sulfate crystal tanks (southeast of well TWN-2) is potentially a
source of nitrate to the nitrate plume. There are no known current unidentified or unaddressed sources of
the nitrate plume. There appear to have been a number of known and potential historical sources; however,
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Energy Fuels Resources (USA) Inc. White Mesa Mill Reclamation Plan
it has not been possible to confirm or quantify the contribution of each source. The conclusion that there
were no impacts to perched groundwater from Mill activities has therefore been modified to include a potential contribution to the nitrate plume from Mill and non-mill sources. However, the conclusion that
there have been no impacts to perched groundwater from the tailings management system operation is valid.
During the course of discussions with EFRI staff, and further DWMRC review, DWMRC supplemented the analysis provided in the Background Reports by commissioning the University of Utah to perform a
geochemical and isotopic groundwater study at the Mill, described in Summary of work completed, data
results, interpretations and recommendations for the July 2007 Sampling Event at the Denison Mines, USA, White Mesa Uranium Mill Near Blanding Utah, May 2008, prepared by T. Grant Hurst and D. Kip
Solomon, Department of Geophysics, University of Utah (the “University of Utah Study” [University of
Utah, 2008]). The purpose of the University of Utah Study was to evaluate whether the increasing and elevated trace metal concentrations (such as uranium) found in the monitoring wells at the Mill were due
to potential leakage from the on-site tailings management cells. To investigate this potential problem, the study examined groundwater flow, chemical composition, noble gas and isotopic composition, and age of the on-site groundwater. Similar evaluations were also made on samples of the tailings wastewater and
nearby surface water stored in the northern wildlife ponds at the facility. Fieldwork for the University of Utah Study was conducted July 17 - 26, 2007. The conclusions in the University of Utah Study supported
EFRI’s conclusions in the Background Reports that tailings management cells had not impacted
groundwater.
Upon approval of the GWDP in 2010, constituents with two consecutive GWCL exceedances were subject
to a Source Assessment Report (SAR) as defined in the GWDP. The initial SAR was submitted in October
of 2012 (INTERA 2012a) and covered the constituents in wells with consecutive exceedances since the approval of the GWDP in 2010. The October 2012 SAR (INTERA 2012a) presented a geochemical
analysis of parameters that exhibited exceedances as well as an analysis of the indicator parameters in each
of those wells to determine if the exceedance could be related to potential tailings seepage or Mill-related activities. Since then, additional SARs that include INTERA 2013a, 2013b, 2014a, 2014b, and 2015 cover
additional consecutive exceedances. In all cases the exceedances for which the SARs were performed were
determined to result from naturally occurring conditions in the groundwater at the site or from other factors that are affecting groundwater but are unrelated to Mill operation. These other factors include the
nitrate/chloride plume that is addressed by the nitrate CAP and the site-wide decline in pH that was
identified at the time of the Background Report.
With regard to the decline in pH, background analysis and determination of GWCLs for pH were performed
using laboratory pH measurements rather than using measurements that are collected in the field at the time of sampling by using a pH probe. Since the latter of these two methods of measuring pH is more reliable, an additional pH analysis was performed in 2012 using only field data. GWCLs for pH were recalculated
at this time using the field measurements (INTERA, 2012b). EFRI compared the Mill’s groundwater pH data from the second quarter of 2011 and noted that all of the June 2011 groundwater results, and many of the other results from the second quarter of 2011, were already outside the revised GWCLs that were to be
proposed. Pursuant to teleconferences with DWMRC on December 5, and December 19, 2011, EFRI submitted a Work Plan and Schedule on January 20, 2012 and a revised plan based on DWMRC comments
on April 13, 2012. Based on the approved Work Plan and Time Schedule, EFRI and DWMRC entered into
a Stipulated Consent Agreement (“SCA”) dated July 12, 2012. The SCA required the completion of the pH Report (INTERA, 2012b) and the Pyrite Investigation and associated report (HGC, 2012c). The pH
Report and Pyrite Investigation Report were submitted to DWMRC on November 9, 2012 and December
7, 2012 respectively. By letter dated April 25, 2013, DWMRC accepted the conclusions that the out-of-
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Energy Fuels Resources (USA) Inc. White Mesa Mill Reclamation Plan
compliance results for pH are due to background effects within the aquifer matrix and are not caused by
Mill activities. DWMRC also approved the recalculation of the GWCLs.
HGC (2012c) determined that pH decreases resulted primarily from pyrite oxidation enhanced by oxygen
delivery to the perched zone. Pyrite exists naturally in the Burro Canyon Formation and Dakota Sandstone,
and is present both above and below the perched water table. Oxygen delivery mechanisms include diffusive and advective gas-phase transport to the Burro Canyon Formation and /or Dakota Sandstone in
the vicinities of perched wells via perched well screens, and advective liquid-phase transport dissolved in
wildlife pond seepage. HGC (2012c) and HGC (2014) also noted that pyrite may be degraded by nitrate present in the perched water. Pyrite oxidation by either mechanism may release acid and sulfate. The site-
wide pH decreases were therefore determined to be unrelated to tailings management cell operation.
1.5.5 Quality of Groundwater at the Compliance Monitoring Point
Analytical results from groundwater sampling are reported quarterly in Groundwater Monitoring Reports,
which are filed with the Director pursuant to Part I.F.1 of the GWDP.
1.5.6 Springs and Seeps
As discussed in Section 1.5.1.4, perched groundwater at the Mill site discharges in springs and seeps along
Westwater Creek Canyon and Cottonwood Canyon to the west-southwest of the site, and along Corral Canyon to the east of the site, where the Burro Canyon Formation outcrops. Water samples have been
collected and analyzed from springs and seeps in the Mill vicinity as part of the baseline field investigations
reported in the 1978 ER (See Table 2.6-6 in Dames & Moore, 1978).
During the period 2003-2004, EFRI implemented a sampling program for seeps and springs in the vicinity
of the Mill which had been sampled in 1978, prior to the Mill’s construction. Four locations were
designated for sampling (shown on Figure 1.5-8). These are Ruin Spring (G3R), Cottonwood Seep (G4R), west of Westwater Creek (G5R) and Corral Canyon (G1R). During the 2-year study period only two of the
four locations were able to be sampled, Ruin Spring and Cottonwood Canyon. The other two locations,
Corral Creek and the location west of Westwater Creek were not flowing (seeping) and samples could not be collected. With regard to the Cottonwood seep, while water was present, the volume was not sufficient
to complete all determinations, and only organic analyses were conducted. The results of the organic
analysis did not detect any detectable organics.
Samples at Ruin Spring were analyzed for major ions, physical properties, metals, radionuclides, volatile
and semi-volatile organic compounds, herbicides and pesticides, and synthetic organic compounds. With
the exception of one chloromethane detection, organic determinations were at less than detectable concentrations and are not shown in Table 1.5-3. The detection of chloromethane is not uncommon in
groundwater and can be due to natural sources. In fact, chloromethane has been observed by EFRI at detectable concentrations in field blank samples during routine groundwater sampling events.
The results of the 2003/2004 sampling for the other parameters tested are shown in Table 1.5-3. The results
of the sampling did not indicate the presence of Mill-derived groundwater constituents and are representative of background conditions.

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Energy Fuels Resources (USA) Inc. White Mesa Mill Reclamation Plan
Table 1.5-3
Results of Quarterly Sampling Ruin Spring (2003-2004)
Parameter Ruin Spring
Q1-03 Q2-03 Q3-03 Q4-3 Q1-04 Q2-04 Q3-04 Q4-04
Major Ions (mg/L)
Alkalinity - - 196 198 193 191 195 183
Carbon Dioxide - - ND ND ND ND 12 ND
Carbonate - - ND ND ND ND ND ND
Bicarbonate - - 239 241 235 232 238 223
Hydroxide - ND ND ND ND ND ND
Calcium 153 156 149 158 158 162 176 186
Chloride 28.1 21.5 27.4 28.0 29.3 28.5 26 25
Fluoride - - ND 0.5 0.5 0.6 0.6 0.6
Magnesium 34.8 34.2 31.7 34.2 35.8 35.1 37.1 38.6
Nitrogen, Ammonia As N ND ND ND ND ND 0.06 ND 0.06
Nitrogen, Nitrate+Nitrite as N 1.6 1.5 1.4 1.4 1.73 1.85 1.34 1.7
Phosphorous 0.10 ND - ND ND ND ND ND
Potassium 2.6 3.3 3.3 3.9 3.4 3.6 4.0 3.7
Sodium 110 105 103 113 104 110 113 116
Sulfate 503 501 495 506 539 468 544 613
Physical Properties
Conductivity (umhos/cm) - - 1440 1410 1390 1440 1320 1570
pH - - 7.91 7.98 - - -
TDS (mg/L) - - 1040 1000 1050 1110 1050 1070
TSS (mg/L) - - 13.5 ND ND ND ND ND
Turbidity (NTU) - - 0.16 0.13 ND 0.12 - -
Metals-Dissolved (mg/L)
Aluminum ND ND 0.40 ND ND ND ND ND
Antimony ND ND ND ND ND ND ND ND
Arsenic 0.001 ND ND 0.001 ND ND ND ND
Barium ND ND ND ND ND ND ND ND
Beryllium ND ND ND ND ND ND ND ND
Cadmium ND ND ND ND ND ND ND ND

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Energy Fuels Resources (USA) Inc. White Mesa Mill Reclamation Plan
Table 1.5-3
Results of Quarterly Sampling Ruin Spring (2003-2004) (continued)
Parameter Ruin Spring
Q1-03 Q2-03 Q3-03 Q4-3 Q1-04 Q2-04 Q3-04 Q4-04
Major Ions (mg/L)
Chromium ND ND ND ND ND ND ND ND
Copper ND ND 0.082 ND ND ND ND ND
Iron ND ND ND ND ND ND ND ND
Lead ND ND ND ND ND ND ND ND
Manganese ND ND ND ND ND ND ND ND
Mercury ND ND ND ND ND ND ND ND
Molybdenum ND ND ND ND ND ND ND ND
Nickel ND ND ND ND ND ND ND ND
Selenium 0.013 0.012 0.012 0.012 0.012 0.012 0.012 0.012
Silver ND ND ND ND ND ND ND ND
Thallium ND ND ND ND ND ND ND ND
Uranium 0.009 0.011 0.010 0.010 0.011 0.011 0.009 0.010
Vanadium ND ND ND ND ND ND ND ND
Zinc 0.014 ND ND ND ND ND ND ND
Radionuclides (pCi/L)
Gross Alpha Minus Rn & U - - - - ND ND 1.4 ND
Lead 210 42 ND ND ND ND ND ND ND
Radium 226 0.3 ND 0.3 ND ND ND 1.3 ND
Thorium 230 0.3 0.2 0.5 ND ND ND 0.4 ND
Thorium 232 - - ND ND ND ND ND -
Thorium 228 - - ND ND ND ND - -
Source: Table 3.7-9 of 2007 ER.

During 2009, the Mill implemented an annual sampling program for seeps and springs. The seeps and
springs sampling program is included in the Sampling Plan for Seeps and Springs in the Vicinity of the White Mesa Uranium Mill Revision: 0, March 17, 2009 (and as submitted to UDEQ for approval, Draft
Sampling Plan for Seeps and Springs, Revision 1, June 10, 2011). The annual sampling program for seeps
and springs requires sampling once per year at the four seeps and springs described above, plus a fifth seep, Corrals Seep, to the extent water flow is sufficient for sampling. Samples were collected in July 2009;
August and November 2010; May and July 2011, June 2012, July 2013, June 2014; and June 2015. Under
the Plan only springs and seeps that had sufficient water flow were selected for sampling. The results of the annual sampling are shown in Table 1.5-4.

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Energy Fuels Resources (USA) Inc. White Mesa Mill Reclamation Plan
Table 1.5-4
Seeps and Springs Sampling
Constituent Ruin Spring Ruin Spring Duplicate Cottonwood Spring Entrance Spring Dup Westwater Seep
Major Ions (mg/L) 9 10 11 12 13 14 15 9 10 11 9 10 11 12 13 14 15 9 10 11 12 13 14 15 15 9 10 11 12 13 14 15
Carbonate ND <1 1 <1 <1 <1 <1 ND <1 2 ND <1 6 <1 <1 <1 <1 ND <1 7 <1 <1 <1 <1 <1 <1 <1 <1
Not Sampled - Dry
Not Sampled - Dry
Not Sampled - Dry
<1
Bicarbonate 233 254 239 237 208 204 200 232 254 236 316 340 316 326 280 251 271 292 332 299 298 292 247 324 326 465 450 371 359
Calcium 151 136 148 147 149 150 162 149 137 147 90.3 92.2 94.2 101 87.9 99.7 111 90.8 96.5 96.6 105 121 103 131 132 191 179 247 150
Chloride 28 23 44 28 26.3 27.1 27.4 27 23 27 124 112 134 149 118 128 133 60 63 64 78 139 76.8 75.6 75.3 41 40 21 32.6
Fluoride 0.5 0.53 0.5 0.52 0.538 <1 0.445 0.5 0.51 0.49 0.4 0.38 0.38 0.38 0.417 <1 0.318 0.7 0.73 0.58 0.64 0.71 <1 0.606 0.6 0.7 0.6 0.54 0.424
Magnesium 32.3 29.7 31.1 31.9 32.1 35.4 31.8 31.6 30.4 30.9 25 24.8 25.2 27.7 23.6 29.0 27.5 26.6 28.9 28.4 32.7 43 34.9 33.3 33.7 45.9 44.7 34.7 34
Nitrogen, Ammonia As N 0.09 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 ND <0.05 <0.05 ND <0.05 <0.05 <0.05 <0.05 <0.05 0.0512 0.28 <0.05 0.32 <0.05 <0.05 <0.05 0.202 0.139 <0.05 0.5 0.06 0.123
Nitrogen,
Nitrate+Nitrite as N 1.4 1.7 1.6 1.6 1.56 1.54 1.31 1.4 1.7 1.7 0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 1.4 1 0.5 2.8 2.06 3.65 <0.1 0.276 0.8 <0.1 <0.1 <0.1
Potassium 3.3 3.07 3.3 3.5 3.46 3.24 3.14 3.2 3.08 3.3 5.7 5.77 5.9 6.2 5.53 6.18 5.91 2.4 2.74 2.9 2 3.83 1.56 1.62 1.72 1.19 6.57 3.9 1.98
Sodium 104 93.4 111 115 118 119 126 103 97.4 108 205 214 227 247 217 227 251 61.4 62.7 68.6 77.4 127 78.9 93.1 93.8 196 160 112 139
Sulfate 528 447 484 464 553 553 528 520 444 483 383 389 389 256 403 417 442 178 179 171 171 394 219 210 214 646 607 354 392
Physical Properties
pH 7.85 7.51 8.14 7.53 7.27 7.7 7.55 8.1 7.73 7.47 8.04 7.53 7.30 7.85 7.56 8.17 7.5 6.57 8.01 7.38 7.2 Not Sampled - Dry 7.24
TDS (mg/L) 1010 903 905 1000 952 984 1000 996 950 911 1010 900 978 1040 996 968 1020 605 661 582 660 828 688 680 708 1370 1270 853 896
Metals-Dissolved (ug/L)
Arsenic ND <5 <5 <5 <5 <5 <5 ND <5.0 <5.0 ND <5 <5 <5 <5 <5 <5 ND <5 <5 <5 <5 <5 5.02 5.02 <5 <5 12.3
Not Sampled - Dry
Not Sampled - Dry
Not Sampled - Dry
<5.0
Beryllium ND < 0.5 < 0.5 <0.5 <0.5 <0.5 <0.5 ND <0.05 <0.05 ND <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 ND <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 0.91 <0.5
Cadmium ND <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 ND <0.05 <0.05 ND <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 ND <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 0.9 <0.5
Chromium ND <25 <25 <25 <25 <25 <25 ND <25 <25 ND <25 <25 <25 <25 <25 <25 ND <25 <25 <25 <25 <25 <25 <25 <25 <25 <25 <25
Cobalt ND <10 <10 <10 <10 <10 <10 ND <10 <10 ND <10 <10 <10 <10 <10 <10 ND <10 <10 <10 <10 <10 <10 <10 <10 <10 <10 <10
Copper ND <10 <10 <10 <10 <10 <10 ND <10 <10 ND <10 <10 <10 <10 <10 <10 ND <10 <10 <10 <10 <10 <10 <10 <10 <10 16 <10
Iron ND <30 <30 <30 <30 <30 <30 ND 36 36 ND <30 <30 <30 <30 <30 <30 ND <30 55 34 162 37.2 295 298 89 56 4540 <30
Lead ND <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 ND <1.0 <1.0 ND <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 ND <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 41.4 <1.0
Manganese ND <10 <10 <10 <10 <10 <10 ND <10 <10 ND <10 <10 <10 <10 <10 <10 54 11 84 <10 259 16.1 367 371 37 87 268 171
Mercury ND <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 ND <0.05 <0.05 ND <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 ND <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5
Molybdenum 17 17 17 16 16.1 16.0 18.3 17 17 17 ND <10 <10 <10 <10 <10 <10 ND <10 <10 <10 <10 <10 <10 <10 29 29 <10 <10
Nickel ND <20 <20 <20 <20 <20 <20 ND <20 <20 ND <20 <20 <20 <20 <20 <20 ND <20 <20 <20 <20 <20 <20 <20 <20 <20 29 <20

Page 1-50 Revision 5.1B
Energy Fuels Resources (USA) Inc. White Mesa Mill Reclamation Plan
Table 1.5-4
Seeps and Springs Sampling (continued)
Constituent Ruin Spring Ruin Spring Duplicate Cottonwood Spring Entrance Spring Dup Westwater Seep
Metals-Dissolved (mg/L) 9 10 11 12 13 14 15 9 10 11 9 10 11 12 13 14 15 9 10 11 12 13 14 15 15 9 10 11 12 13 14 15
Selenium 12.2 10 10.2 10.8 10.2 12.0 10 12.3 9.5 9.7 ND <5.0 <5.0 <5.0 <5.0 <5.0 <5 12.1 9.2 5.5 13.2 11.2 15.9 <0.5 <5 <5.0 <5.0 <5.0

<5.0
Silver ND <10 <10 <10 <10 <10 <10 ND <10 <10 ND <10 <10 <10 <10 <10 <10 ND <10 <10 <10 <10 <10 <10 <10 <10 <10 <10 <10
Thallium ND <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 ND <0.5 <0.5 ND <0.5 <0.5 <0.5 <0.5 <0.5 <5 ND <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5
Tin ND <100 <100 <100 <100 <100 <100 ND <100 <100 ND <100 <100 <100 <100 <100 <100 ND <100 <100 <100 <100 <100 <100 <100 <100 <100 <100 <100
Uranium 9.11 8.47 8.63 8.68 9.12 9.61 9.03 9 8.52 8.28 8.42 8.24 8.68 8.17 8.95 9.62 9.12 15.2 17.8 15.3 21.1 38.8 23.2 36 36.1 15.1 46.6 6.64 2.1
Vanadium ND <15 <15 <15 <15 <15 <15 ND <15 <15 ND <15 <15 <15 <15 <15 <15 ND <15 <15 <15 <15 <15 <15 <15 <15 <15 34 <15
Zinc ND <10 <10 <10 <10 <10 <10 ND <10 <10 ND <10 <10 <10 <10 <10 <10 ND <10 <10 <10 <10 <10 <10 <10 <10 <10 28 <10
Radionuclides (pCi/L)
Gross Alpha Minus Rn & U <0.2 <0.2 <-0.05 <-0.09 <1.0 <1 <1.0 -0.02 <0.3 <-0.1 0.3 <0.2 <-0.1 <-0.2 <1.0 <1.0 <1.0 0.9 <0.5 1.6 0.5 2.3 <1 3.05 3.11 < -0.1 <0.3 0.5 Not Sampled - Dry
Not Sampled - Dry
Not Sampled - Dry <1.0
Volatile Organic Compounds (ug/L)
Acetone ND ND ND <20 <20 <20 <20 ND ND ND ND ND ND <20 <20 <20 <20 ND ND ND <20 <20 <20 <20 ND ND ND ND
Not Sampled - Dry
Not Sampled - Dry
Not Sampled - Dry
<20
Benzene ND ND ND <1.0 <1.0 <1.0 <1.0 ND ND ND ND ND ND <1.0 <1.0 <1.0 <1.0 ND ND ND <1.0 <1.0 <1.0 <1.0 ND ND ND ND <1.0
Carbon tetrachloride ND ND ND <1.0 <1.0 <1.0 <1.0 ND ND ND ND ND ND <1.0 <1.0 <1.0 <1.0 ND ND ND <1.0 <1.0 <1.0 <1.0 ND ND ND ND <1.0
Chloroform ND ND ND <1.0 <1.0 <1.0 <1.0 ND ND ND ND ND ND <1.0 <1.0 <1.0 <1.0 ND ND ND <1.0 <1.0 <1.0 <1.0 ND ND ND ND <1.0
Chloromethane ND ND ND <1.0 <1.0 <1.0 <1.0 ND ND ND ND ND ND <1.0 <1.0 <1.0 <1.0 ND ND ND <1.0 <1.0 <1.0 <1.0 ND ND ND ND <1.0
MEK ND ND ND <20 <20 <20 <20 ND ND ND ND ND ND <20 <20 <20 <20 ND ND ND <20 <20 <20 <20 ND ND ND ND <20
Methylene Chloride ND ND ND <1.0 <1.0 <1.0 <1.0 ND ND ND ND ND ND <1.0 <1.0 <1.0 <1.0 ND ND ND <1.0 <1.0 <1.0 <1.0 ND ND ND ND <1.0
Naphthalene ND ND ND <1.0 <1.0 <1.0 <1.0 ND ND ND ND ND ND <1.0 <1.0 <1.0 <1.0 ND ND ND <1.0 <1.0 <1.0 <1.0 ND ND ND ND <1.0
Tetrahydrofuran ND ND ND <1.0 <1.0 <1.0 <1.0 ND ND ND ND ND ND <1.0 <1.0 <1.0 <1.0 ND ND ND <1.0 <1.0 <1.0 <1.0 ND ND ND ND <1.0
Toluene ND ND ND <1.0 <1.0 <1.0 <1.0 ND ND ND ND ND ND <1.0 <1.0 <1.0 <1.0 ND ND ND <1.0 <1.0 1.32 <1.0 ND ND ND ND <1.0
Xylenes ND ND ND <1.0 <1.0 <1.0 <1.0 ND ND ND ND ND ND <1.0 <1.0 <1.0 <1.0 ND ND ND <1.0 <1.0 <1.0 <1.0 ND ND ND ND <1.0
Page 1-51 Revision 5.1B
Energy Fuels Resources (USA) Inc. White Mesa Mill Reclamation Plan
1.5.7 Groundwater Appropriations Within a Five Mile Radius
Two hundred sixty one groundwater appropriation applications, within a five-mile radius of the Mill site, are on file with the Utah State Engineer's office. A summary of the applications is presented in Table 1.5-
5 and shown on Figure 1.5-9. The majority of the applications are by private individuals and for wells
drawing small, intermittent quantities of water, less than eight gpm, from the Burro Canyon formation. For the most part, these wells are located upgradient (north) of the Mill site. Domestic water, stock watering,
and irrigation are listed as primary uses of the majority of the wells. It is important to note that no water
supply wells completed in the perched groundwater of the Burro Canyon formation exist directly downgradient of the site within the five-mile radius. Two water supply wells, which available data indicate
are completed in the Entrada/Navajo sandstone, exist approximately 4.5 miles southeast of the site on the
Ute Mountain Ute Reservation. These wells supply domestic water for the Ute Mountain Ute White Mesa Community, situated on the mesa along Highway 191 (see Figure 1.5-9). Data supplied by the Tribal
Environmental Programs Office indicate that both wells are completed in the Entrada/Navajo sandstone, which is approximately 1,200 feet below the ground surface. Insufficient data are available to define the groundwater flow direction in the Entrada/Navajo sandstone in the vicinity of the Mill.
The yield from wells completed in the Burro Canyon formation within the White Mesa site is generally lower than that obtained from wells in this formation upgradient of the site. For the most part, the
documented sustainable pumping rates from on-site wells completed in the Burro Canyon formation are
typically less than 1/2 gpm. Even at low pumping rates, on-site wells completed in the Burro Canyon formation are typically pumped dry within a couple of hours, and corrective action pumping wells have to
be cycled on and off due to the low productivity.
This low productivity suggests that the Mill is located over a peripheral fringe of perched water, with saturated thickness in the perched zone discontinuous and generally decreasing beneath the site, and with
conductivity of the formation being very low. These observations have been verified by studies performed
for the U.S. Department of Energy's disposal site at Slick Rock, which noted that the Dakota Sandstone, Burro Canyon formation, and upper claystone of the Brushy Basin Member are not considered aquifers due
to the low permeability, discontinuous nature, and limited thickness of these units (U.S. DOE, 1993).
1.6 Geology
The following text is copied, with minor revisions, from the 1978 ER (Dames and Moore, 1978b). The text
has been included here for ease of reference and to provide background information concerning the site
geology. 1978 ER subsections used in the following text are shown in parentheses immediately following the subsection titles.
The site is near the western margin of the Blanding Basin in southeastern Utah and within the Monticello uranium-mining district. Thousands of feet of multi-colored marine and non-marine sedimentary rocks have been uplifted and warped, and subsequent erosion has carved a spectacular landscape for which the
region is famous. Another unique feature of the region is the wide-spread presence of unusually large accumulations of uranium-bearing minerals.

Page 1-52
Revision 5.1B
Energy Fuels Resources (USA) Inc.
White Mesa Mill Reclamation Plan
IN!!er l
Diversion
Type/Location 109-1006 !!underground
D S30 W20 E4 02 37S
22ESL 109-1008 !!Underground
DS460E117W401
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109-1009 llunderground
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Water Rights
I 'i:!1 llstatusl Priority BEJIACFTII Owner Name I
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Energy Fuels Resources (USA) Inc.
White Mesa Mill Reclamation Plan
D S2620 W840 NE 36 DDDDDDIP.O.BOX#23l I 36S 22E SL
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Energy Fuels Resources (USA) Inc.
White Mesa Mill Reclamation Plan
I ll37S 22E SL II II II IDOi IICANYON ROAD I
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Energy Fuels Resources (USA) Inc.
White Mesa Mill Reclamation Plan
I ll37S 22E SL II II II IDOi I I 109-1124 llunderground II IIP IJ19S6os1sll!CJ!o.0151Jo.ooo ll10HN BRAKE
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White Mesa Mill Reclamation Plan
D
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Energy Fuels Resources (USA) Inc.
White Mesa Mill Reclamation Plan
D NlOOO E650 SW 22
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Energy Fuels Resources (USA) Inc.
White Mesa Mill Reclamation Plan
I ll37S 22E SL II II II IDOi IIWEST (68-2) I
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Energy Fuels Resources (USA) Inc.
White Mesa Mill Reclamation Plan
D N1287 W448 SE 10
DDDDDDIBLANDINGUT84511 I 37S 22E SL
109-1457 1 DDBEJBEJ WINTERSHALL OIL
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Underground ATLANTIC
RESOURCES INC.
D S2722 ElO NW 01 DDDDDDCJOPERMITSWEST 37S 22E SL INC. ATTN: BRIAN
Page 1-60
Revision 5.1B
Energy Fuels Resources (USA) Inc.
White Mesa Mill Reclamation Plan
I I I II II IDOi ll wooD I
109-1709 ilunderground ID D8DBBGORDONREDD P 19900504 I 0.000 1.120 MANAGEMENT INC.
D N2505 E1629 S4 34 36S 22E SL DDDDDDl~;:~JHMAIN I
109-1734 iiunderground IDDl19901010jEJjo.oooj j2.ooo j ~~~:~~NERGY
D S2722EI0NW01 37S 22E SL DDDDDDl~~-PERMITSWEST I
Jo9-1785 llunderground II l]A ll 19911031 JJ ors 110.100110.000 IJBERTHA SNYDER I
D S200 E800 W4 01 DDDDDD 409 EAST 1000
37S 22E SL NORTH
109-1794 ilunderground jj:~ IDl19920313IEJl0.10ojjo.ooo IIJAMES D. REDD D N1115 E2320 SW 02
37S 22E SL DDDDDDl~::AFEHEIGHTS
109-1801 iiunderground IDDl19920114iEJio.oooii9·000 ll~~L~2·
D S2722 ElO NW 01 DDDDDDic10BILLYHAss 37S 22E SL
109-1822 llunderground II:~ IDl19930315[E}.oo+.130 l=i~::ND
D S250 W250 NE 03 DDDDDDl1307 SOUTH MAIN I 37S 22E SL
109-1843 iiunderground II:~ 1Di19940323jiD1s ijo.oooij1.s60 jj1EROLD PERKINS I D S201 E1530 NW 03 DDDDDD 1092 EAST BROWNS 37S 22E SL CANYON ROAD (103-18)
109-1844 llunderground jj:~ IDi19940331j EJjo.ooojj3.160 ll~~~oN KIRK I D N2125 E846 SW02 DDDDDD292 WEST CENTER 37S 22E SL STREET BOX 67-7
109-1845 ilunderground IDDl19940331IEJl0.oooil3,760 ll=JONKIRK I
D Nl 115 E1220 SW 02 DDDDDD 292 WEST CENTER 37S 22E SL STREET BOX 67-7
109-1848 ilunderground JI:~ IDl19940411 iDio.oooi jo.150 IIM. DALE SLADE I
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Revision 5.1B
Energy Fuels Resources (USA) Inc.
White Mesa Mill Reclamation Plan
D N35 E40 SW 04 37S DDDDDD 332 WEST400
23ESL SOUTH (64-5)
109-1862 llunderground IDDl1995011sl[Jlo.sooiJo.ooo ll~g~[:,51 I
D N200 W2250 E4 36 DDDDDD 36 EAST 500 SOUTH
36S 22E SL (77-15)
109-1875 llunderground IDDl19950411IIDis llo.oooiJ4.730 ll~~~~~;ANDRA I
D N2105 W235 SE 34 DDDDDD 686NORTH
36S 22E SL DAYBREAK DRIVE
Jo9-1878 l!underground II IIP IJ199sososlLJlo.ooojl1.680 II BRUCE J. LYMAN I D S92 W2566 E4 33 DDDDDD SHIRTAIL JUNCTION
36S 23E SL (105-7)
109-1880 IIUnderground II:~ ID1 1995062011DIS 110.000114.730 I MITCHELL H. &
JANA L. BAILEY
D S945 E1095 NW 15 DDDDDD SHIRTAIL CORNER
37S 22E SL 105-14
Jo9-1886 llunderground II:~ 1DJ199so801IIDIS llo.oooii 1.130 ll~~~N ~OWN I
D N868 W1260 SEOl DDDDDDBROWN'S CANYON
37S 22E SL ROAD (103-16)
109-1912 llunderground II:~ IDl19960521IEJl0.oooil4·730 IITHOMAS A. MAY I D N500 W545 S4 02 DDDDDD2202SOUTHCiliCO
37S 22E SL CEDROS ROAD (104-8) jo9-193 II underground II IIP IJ 19560316ILJlo.01slJo.ooo IJALMA u. JONES I
D S50 W1420 E4 33 DDDDDD1BLANDINGUT84511 I 37S 22E SL
109-1934 liunderground II:~ ID119960830iloIS IJ0.000Ji 1.882 I RONALDF. &
MERLE MCDONALD
D N1816 W651S401 DDDDDD 1500 BROWN'S
37S 22E SL CANYONROAD
(103-2)
109-194 7 llunderground J~:~ IJ~J t99611261Jms If .oo~EJlmoMAs A. MAY I
D N174 W901S402 DDDDDD2202 SOUTHCiliCO
37S 22E SL i)EDROS ROAD (104-
Jo9-l 953 IJunderground II IIT 1i 1997043ojJDIS llo.000114.730 IIJERRY HOLLIDAY I
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Revision 5.1B
Energy Fuels Resources (USA) Inc.
White Mesa Mill Reclamation Plan
0 ~~~9{2:~tNE02 DDDDDC]r.o. BOX502 I
109-1955 llunderground II:~ ID[199705271EJlo·oool[4.730 l[~~~ARY I
D ~i~;;:s~59 sE01 DDDDDC]~:roRTH 500 I
109-1959 IUnderground DDl199707291Dlo.oo+.730 1=E~
D N2339 E191 SW 35 DDDDDD859 SOUTH lOOEAST 36S 22E SL (82-9) ~=======:I [09-1964 llunderground I[:~ 1Dl20030512llo1s llo.oooilo.990 IIBEN J. BLACK I
D N516 E625 W4 02 DDDDDD83 WEST 300 SOUTH 37S 22E SL 75-5 [09-1968 llunderground II:~ ID[ 19970915[[ms l[o.000[[4.730 [::=:=~=~=~i=&=P=E=G=G=Y==:i
0 ~~~~8:~sE01 DDDDDDIP0Box1145 I
~!underground II:~ [0[19560512IEJl2.ooollo.ooo I ~i~ ~~~~TAIN
D ~f~~;:';~7s423 DDDDDD1TOWAOCC081334 I
109-1972 llunderground IDD1199710231101s 110.000114.730 II~~~ MARTHA I
D ~i~;;:;t5 E4 21 D D DDDC]P.O. BOX?29 I
~]underground II:~ 101199802171101s 110.0001[3.774 l~~~~!~LISA
D NllO W2339 W4 34 DDDDDD466 WEST 800 36S 22E SL SOUTH 60-15
[09-1982 llundergrowid IDDl19980320lims l[o.000![4.730 ll~~B. I
D ~i;;~;'ii,60 SEO! DDDDDDlm sourn100EAsTI
~]underground II:~ IDl 199804131EJl0.000[[1.894 1~-~s~::BECCA
D S251 E933 W4 35 DDD DDD301 E. EAGLE VIEW 36S 22E SL LN. 95-19 ~=======:! ~Jlundergrowid l=:JDBEJBGI~~=~ I
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Revision 5.1B
Energy Fuels Resources (USA) Inc.
White Mesa Mill Reclamation Plan
I I I II II IDOi IIFELSTEAD I
D
N1847 W893 SE 01
DDDDDD
1863 NORTH
37S 22E SL CANYON VIEW
DRIVE (103-22)
[09-1991 [[underground [[:~~ [0[19980102[[0Is [[o.ooof [4.730 [ ARDEN C. & BILLIE
SUE NIELSON
O ~ii~~:;~os SE 11 DDDDDD[sox 864 I
109-2001 [[underground [[:~ [D[199810o2[[0Is [[0.000111.480 IIANNA M. RAFFERTY I
D S860 E315 NW 22 DDDDDD1P.O.BOX553 I 37S 22E SL
109-2006 IJunderground II IIT jl19990112l1DIS 110.0001 14.730 JiMARTHA LYMAN I D S660 W700 NE 21
DDDDDD1P,O.BOX96 I 37S 22E SL
109-2010 "Underground II:~ ID l1999031s lEJlo.ooolEJ STEVEN C. AND
SHAUNA E. BLACK
D N2430 E2540 SW 36 DDDDDD 1606 EAST HARRIS
36S 22E SL LANE (102-9)
109-2012 I DDl199904021BE+·194 I JULIE MAY KNITTEL
Underground AND CAROL ANN
BLISS
D S76 W1085 E4 02 DDDDDD 2250 NORTH 1200
37S 22E SL EAST
109-2021 "Underground II:~ ID1199908101i0Is 110.oool~lsHELLYBLAKE I D S275 E561 W4 35 DDDDDD 853 SOUTH 200 EAST
36S 22E SL (95-23)
109-2033 I DDl20000412l lms llo.oooll4.730 I
RANDALL&
Underground MARILYN
PEMBERTON
D
N1652 E30 SW 36
DDDDDD
1727 SOUTH
36S 22E SL AROUND THE
WORLD 103-23
109-2035 "Underground II:~ IDl20000504IEJ l0.oooi14,730 IIALANSHUMWAY I
D N1151 E577 SW 35 DDDDDD 1201 SOUTH 200
36S 22E SL EAST (95-22)
109-2040 iiunderground II:~ l[Jl2000012s1ims llo.000114.730 11~~:AY I I I N112 W270 E4 35 DI II IDOi 11755 SOUTH MAIN I
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Revision 5.1B
Energy Fuels Resources (USA) Inc.
White Mesa Mill Reclamation Plan
I ll36S 22E SL II II II IDOi IISTREET I
109-2065 !!underground IDD12oo11221llms [[o.ooo[[4.730 [ JAMESG.AND STACY MONTELLA
D S100 W650 E4 02 DDDDDD978EASTBROWN CANYONROAD 37S 22E SL (103-19)
[09-2068 [[underground [[:~~ [0[20010502[[nis [[o.000[[2.904 [[sRUCE E. STEVENS I D S80W710NE02 DDDDDD
1314 SOUTH 1100 37S 22E SL EAST 102-16
109-2069 I [:~ l[Jl20010912[f 1s l[o.ooo[EJ
JOE(JR)AND Underground SHIRLEY A. GRISHAM
D
S1110 W277 E4 02
DDDDDD
2044SOUTH PERKINS LANE 103-37S 22E SL 20
109-2070 I Underground [:~ l[Jl20020409IEJ000[[1.450 I
RICHARD I. AND MARIEANN WATKINS
D S162W4489E401
DDDDDD
1302BROWN CANYON ROAD 103-37S 22E SL 24
109-2074 IIUnderground II IIT ll2oo205211Dlo.oooll4.730 IIBRUCE J. LYMAN I D N1020 W1220 SE 15
DDDDDD
SHIRTAIL JUNCTION 37S 22E SL 105-7
r9-2075 [[underground IDD8EJBB
USA CORPORATION INTERNATIONAL URANIUM
D S769 Wl812 NE 33 37S 22E SL DDD DDD[P.O.B0X809 I
109-2075 I Underground DDl200206031[ox l[o.000[[16.140 I
USA CORPORATION INTERNATIONAL URANIUM
D s1039 W1600NE33 DDDDDD[ro Box 809 37S 22E SL · . I
109-2075 I DD8EJBB
USA CORPORATION Underground INTERNATIONAL URANIUM
D
S1156 W1591 NE 33 DDDDDD[r.o.Boxs09 I 37S 22E SL
109-2075 llunderground II IIT ll20020603 llox llo.000Jl16.14o llusA CORPORATION I
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Revision 5.1B
Energy Fuels Resources (USA) Inc.
White Mesa Mill Reclamation Plan
DI IDDDDDD INTERNATIONAL
URANIUM
D S1023 W1576 NE 33 DDDDDC[lr.o.Box8o9 I 37S 22E SL
109-2075 I Underground DD8EJBEJUSACORPORATION T 20020603 OX 0.000 16.140 ~~:iiJ~IONAL
D S903 W1563 NE 33
DDDDDD1P.O.BOX809 I 37S 22E SL
f 9-2075 I DD1200206031EJBl16.140 I
USA CORPORATION
Underground INTERNATIONAL
URANIUM
D S1434 W1537 NE 33 DDDDDDlr o BOX 809 I 37S 22E SL ..
~9-2087 llunderground II:~ l[]2002081slf IS 110.000113.010 l~EN J. BLACK I
D N516 E631W402 DDDDDD 303 EAST BROWNS
37S 22E SL CANYONRD.
109-2094 llunderground ID Dl20020924IEJl0.oooilo.s3s ll~~~~gN I
D N125 W907 E4 34 DDDDDD 788 SOUTH MAIN
36S 22E SL STREET 78-11 109-2097 llunderground ID[]20021004IEJl0.oooil4.730 II~~~= F. I
D S581 E53 W4 01 37S DDDDDD 63 NORTH 100 WEST
22ESL (17-2)
109-2100 I Underground DDl20021118llox llo.oooll32.280 I
INTERNATIONAL
URANIUM USA
CORPORATION
D N36 W2249 SE 28
37S 22ESL DDDDDDIP,O.B0X809 I
109-2100 I DDBEJBB™TERNATIONAL Underground T 20021118 OX 0.000 32.280 URANIUM USA
CORPORATION
D N139 W2146 SE 28 DDDDDD1P.O.BOX809 I 37S 22E SL
109-2100 I DD12002 1118IEJBl32.280 I INTERNATIONAL
Underground URANIUM USA
CORPORATION
D N138 W1890 SE 28 DDDDDD1r.o.Box8o9 I 37S 22E SL
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Revision 5.1B
Energy Fuels Resources (USA) Inc.
White Mesa Mill Reclamation Plan
109-2100 I Underground DDl20021118llox llo.0001132.280 I =~~s~AL CORPORATION
D:=~=1:=~=;=1=S6L=96=S=E=2=8=!DDDDDD1P.O. BOX 809
r9-2100 !underground DD120021118llox 110.0001132.2801=~~s~AL
CORPORATION
D::=~~=sw=2=~~=1=;L=NE=3=3 ==:DDDDDDIP.o. Box 809
109-2100 llun<lfigroillill IDDl20021118llox llo.0001132.280 l=E~~AL
D::=~7=1;=82=ie=l=~r=8=NE=3=3=:DDDDDC}·o. BOX 809
EJlunderground II:~ IDl!95701291Dlo.015llo.ooo I ~=F
D N3279 E3641 SW 29 DDDDDD2370 SOUTH2300
38S 23E SL WEST ::=======~I 109-2125 !!underground II:~ IDl20030715IEJl0.oooll4.730 IISAN JUAN COUNTY I
o ~~~~:s~3SE34 oooooor.O.BOX9 I
f 9-2139 !!underground IDD!200401261f rs If .000114.730 l~~~LL H. I
D N95 E1830 SW 10 DDDDDD 105-14 SHIRTAIL
37S 22E SL CORNER :==========:I
109-2140 llunderground II:~ IDl20040217JloIS l!o.oooJ!4.730 IITONY F. GUYMON I
D N2565 E2680 SW 02 DDDDDDBROWN CANYON
37S 22E SL ROAD 104-7
109-2152 flunderground fDD!20041115fl ms !lo.ooof!4.730 f :vRL~~ING
0 ~~1;°2~iiNWJ6 DDDDDDl~~~STHARRIS I
~]underground JDDJ20050407Jlms 110.000JJ4.730 J ~~~~;NIECE
D N1095 W725 E4 21 DDDDDD 1051 WEST 4350 37S 22E SL SOUTH 105-10
1;:=;jo9=-2=17=0=;;,JIUnderground jjwell IJP ]l20060103 lfilJlo.ooolJ4.730 IIDANIELAND
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Revision 5.1B
Energy Fuels Resources (USA) Inc.
White Mesa Mill Reclamation Plan
DI IEJDDDDDl~Jc~R I
D S 1285 E573 NW 06 DDDDDD 1551 S. BOOTS &
37S 23E SL SPURS LANE
109-2182 IIUnderground IDD~EJBBGIBNN &GLORIA A 20060814 DIS 0.000 4.730 PATTERSON
D N1390 E90 S4 02
37S 22E SL DDDDDD1P.OBOX972 I
!09-2185 !!underground II IIT ll200609o81fQI:Jlo.oool!4.730 !!MARTHA A. LYMAN I D SlOO W990 NE 21
37S 22E SL DDDDDD190 WEST 100SOUTH I
109-2187 I I:~ IDl2oo60920IID1s llo.oooll4.130 I RANDALL&
Underground MARILYN
PEMBERTON
D N784 E278 W4 01 DDDDDD 72 SOUTH 100 WEST
37S 22E SL 70-1
109-226 llunderground II:~ IDl195so110IEJl0.015ilo.ooo 11~¢~sHA OF I
D S1639 E1689 N4 03 DDDDDD1BOX#7l4 I 37S 22E SL
109-2263 llunderground [JDl20010124llms 110.00+,130 1,~~5SANDRA I
D N2010 W235 SE 34 DDDDD0~81:B~K I 36S 22ESL
109-2267 llunderground II:~ IDl20010323IEJl0.ooollo.4so I JEFF&SHERI
MONTELLA
D S516 E2 E4 02 37S DDDDDDIP.O.B0X285 I 22ESL
109-2270 llunderground l~DBEJB§JCRAIGB.AND info A 20070530 DIS 0.000 2.562 JOANNE T BARLOW
D N2383 E1328 SW 35 DDDDDD1P,O.BOX625 I 36S 22E SL
r9-2276 I 1:~ IDl2007082911DIS 1~.00~12.478 I GLENNT.AND
Underground GLORIAJ.
PATTERSON DN348 Wl021E401 DDDDDD 1981 KOKOPELLI
37S 22E SL LANE
109-2286 IIUnderground []Di2oom1sllms llo.ooollrno I MITCHELL H. &
JANAL. BAILEY
D N834 E1230 S4 16 DDDDDD~~~-SHffiTTAIL I 37S 22ESL
Page 1-68
Revision 5.1B
Energy Fuels Resources (USA) Inc.
White Mesa Mill Reclamation Plan
109-2290 llunderground II !IA l12ooso2211!0IS 110.000114.730 !!LOIS SHUMWAY I D S284 W423 NE 03
DDDDDD1POBOX447 I 37S 22E SL
109-2296 llunderground IDOl2oosososll0Is 110.000114.730 ll~YNDELL & ELIZA I D S1255 W814 E4 02
37S 22ESL DDDDDD IP.0.B0X555 I
109-2297 llunderground IDD~EJBBNELLADEEAND A 20080516 D1S 0.000 4.728 JACK L. STREET D SlOO W650 E4 02
DDDDDD
1004 EAST BROWNS
37S 22ESL CANYONROAD
109-2306 llunderground II:~ IOl20081006I EJl0.oooilo.s34 ll~Jrf ALICIA I D S400 E738 W4 36
36S 22E SL DDDDDDl1312 HARRJSLANE I
109-2309 l!Underground II !IA !l20081103!10Is !lo.oool l4.470 IIKEVIN BLACK
D S955 E192 NW 01 DDDDDD141 FAST 300 SOUTH 37S 22E SL
109-2311 llunderground IDDl2008111oll0Is 110.000114.730 ll~~f: TERRI D S50 W990 NE 21
37S 22E SL DDDDDD1POBOX106
109-2312 llunderground ID012oos123ollms 110.000114.730 I ~~~ NELLADEE
D S72 W662 E4 02 37S
DDDDDD
1004 EAST BROWNS
22ESL CANYON RD
109-2316 llunderground IDDl20090209il0Is 110.000114.590 II~~~~ P. I
D S1095 W725 NE 21
DDDDDD
4238 SOUTH 1000
37S 22E SL WEST
109-255 I Underground DDB DBEJ USA BUREAU OF
LAND
MANAGEMENT D S688 E128 W4 14
DDDDDD
2370 SOUTH 2300
38S 21E SL WEST
109-275 I Underground DDBDBEJ UT AH SCHOOL AND
INSTITUTIONAL
TRUST LANDS
ADMIN. 'D S943 W546 N4 32
D DDDDD
675 EAST 500
38S 23E SL SOUTH, 5TH FLOOR
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Revision 5.1B
Energy Fuels Resources (USA) Inc.
White Mesa Mill Reclamation Plan
109-348 llunderground IDOl196405131Dlo.o11 llo.ooo I KELLY G. & TERRIJ.
LAWS D N2265 W900 S4 33
36S 23E SL DDDDDDl295 W.400N. I jo9-365 llunderground II IIP llt96410I31LJlo.01slJo.ooo IJEUGENE GUYMON I
D N747 W932 E4 02 DDDDDD1P.O.BOX117 I 37S 22ESL
jo9-385 IJunderground II IIT l11965011sJDlo.sooJ lo.ooo IIHARRIS SHUMWAY I
D S1320 E395 NW 33
DDDDDDIBOXI72 I 37S 22E SL
109-423 II underground II IIP 1!193sos22IJ0Is IJ0.022lls.sso IIFRED s. LYMAN I D N340 W750 S4 10 DDDDDD1BLANDINGUT845l1 1 37S 22E SL
Jo9-466 llunderground II IIP llt96803osJD1o.0011lo.ooo IILORENZO HAWKINS I D S152 W76 NE 32
37S 22E SL DDDDDD1P.O.BOX182 I
109-473 I DDBEJBEJ USA UTAH LAUNCH
Underground COMPLEX WHITE
SANDS MISSLE
RANGE D S608 W327 NE 27 DDDDDD C/OA.MURAY
37S 22E SL MAUGHN, SITE
DIRECTOR
109-474 llunderground IDDl196903m1Dlo.01sllo.ooo ll~~~~R I
0 ~~~0~2:;fOON435 DDDDDD1B0X232 I
109496 I DDElDBEJ MONTICELLO
Underground DISTRICT USA
BUREAU OF LAND
MANAGEMENT
D N1098 E1642 SW 11 DDDDDDIP o BOX 1327 38S 21E SL .. I
109-504 I DD8DBEJ USA BUREAU OF
Underground LAND
MANAGEMENT D S3219 E3255 NW 08 DDDDDD
2370 SOUTH 2300
37S 22E SL WEST
109-510 l!Underground II IIT Jj1971031sJDl2.oool!o.ooo !!WILLIAM B. REDD I
D N200 E2750 SW 03 DDDDDDIBOXS3l I 37S 21E SL
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Revision 5.1B
Energy Fuels Resources (USA) Inc.
White Mesa Mill Reclamation Plan
109-510 llunderground II IIT ll1971031slDl2.ooollo.ooo llwILLIAM B. REDD I
D
NO E3000 SW 03 DDDDDD1sox 531 I 37S 21E SL
109-528 II Underground II IIP ll19120315J IDIS Jlo.01s!lo.ooo 111. PARLEY LAWS I
D
N3110 W1790 SE 02
DDDDDDIP,O. BOX#315 I 37S 22E SL
109-541 I DDB DBEJ
BLANDING
Underground VACATIONS
INCORPORATED
D ~j~5~2~~f NW 15 DDDDDDIPO BOX 66 I
109-544 l!underground II IIT ll 19720922IDl0.015llo.ooo !!ROBERT E. HOSLER I
D ~;i~:ii3 SE03 DDDDDD1POBOX421 I
109-546 IIUnderground IDD1197210121E llo.Q3ollo.ooo Ir~: ~-AND
D
S3273 E1687 N4 03
DDDDDDIP.O. BOX#263 37S 22E SL
109-573 llunderground II IIP ll 19730921ll0Is llo.084jlo.ooo l!ERWIN OLIVER D N1610 E1260 SW 35
36S 22E SL DDDDD D1P.O.BOX#285
109-581 II underground II IIP ll1974o5o21Dlo.3oollo.ooo lloELORES HURST D S70 W900E4 35 36S DDDDDD516 WEST 100 22E SL SOUTH (50-5)
109-581 l!Underground II IIP ll1974o5o21Dlo.3oollo.ooo lloELORES HURST I D S750 W430 E4 35 DDDDDD
516 WEST 100
36S 22ESL SOUTH (50-5)
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516WEST 100
22ESL SOUTH (50-5)
109-582 llunderground IDDl197405021Dlo.75ollo.ooo ll~~TMILTON I
D
S75 W1185 E4 35
DDDDD
747 NORTH 300
36S 22ESL WEST (34-2)
109-582 llunderground IDD1197405021[J1sol 0.000 ITRA VIS EV AN
PEHRSON I D S60W860 E4 35 36S DDDDDD747 NORTH 300 22E SL WEST (34-2)
109-584 llUnderground I well IIP !11974oso3 l~lo.015l 0.000 LEONARD R. HOWE
Page 1-71
Revision 5.1B
Energy Fuels Resources (USA) Inc.
White Mesa Mill Reclamation Plan
I I linfo 11 II IDOi I
D S619 Wl35 N4 03 DDDDDD[P.O.B0X#1025 I 37S 22E SL
jo9-597 llunderground II IIP jj1974os29jLJlo.01sjlo.ooo llooROTHY PERKINS I D S590 W810 E4 21 DDDDDD NORTH RESERVOIR 37S 22E SL ROAD (37-1)
109-606 IIUnderground II IIT ll19741127l1DIS 110.100110.000 IIJESS M. GROVER I D N2040 W350 S4 01
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[09-618 [[underground [[:~ [0[191so421[[01s [[0.010[[0.ooo [[~i:~~~ENE I D $1140 W220 N4 03 DDDDDD 444 WEST 1600
37S 22E SL SOUTH (79-2)
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j09-631 i!Underground II IIP ll 19751120jlD1S jjo.10oljO .OOO i!EUGENE GUYMON I D N747 W932 E4 02
DDDDDDIP.O.B0X#ll7 I 37S 22E SL
109-631 IIUnderground II IIP ll 191s112ollo1s l!o.100J!o.ooo IIEUGENE GUYMON I D N400 W350 E4 02
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D DDDDDIP.O.B0X#ll7 I 37S 22E SL
109-634 [[underground [[:~ [0[191s1129[D[o.01s[[o.ooo [ LORRAINE ROSE
AND VERL J. ROSE
D S1326 W1205 E4 02 DDDDDD 1166 SOUTH 100
37S 22ESL EAST
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D I IDDDDDD SHIRLEY LOU B.
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I I I II II IDOi IIJANA L. BAILEY D N256 W943 SE 16
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1.6.1 Regional Geology
The following descriptions of regional physiography; rock units; and structure and tectonics are reproduced from the 1978 ER for ease of reference and as a review of regional geology.
1.6.1.1 Physiography (1978 ER Section 2.4.1.1)
The Mill site lies within the Canyon Lands section of the Colorado Plateau physiographic province. To the
north, this section is distinctly bounded by the Book Cliffs and Grand Mesa of the Uinta Basin; western margins are defined by the tectonically controlled High Plateaus section, and the southern boundary is
arbitrarily defined along the San Juan River. The eastern boundary is less distinct where the elevated
surface of the Canyon Lands section merges with the Southern Rocky Mountain province.
Canyon Lands has undergone epeirogenic uplift and subsequent major erosion has produced the region's
characteristic angular topography reflected by high plateaus, mesas, buttes, structural benches, and deep
canyons incised into flat-laying sedimentary rocks of pre-Tertiary age. Elevations range from approximately 3,000 feet (914 meters) in the bottom of the deeper canyons along the southwestern margins
of the section to more than 11,000 feet (3,353 meters) in the topographically anomalous laccolithic Henry, Abajo and La Sal Mountains to the northeast. Except for the deeper canyons and isolated mountain peaks,
an average elevation in excess of 500 feet (1,524 meters) persists over most of the Canyon Lands section.
On a more localized regional basis, the Mill site is located near the western edge of the Blanding Basin, sometimes referred to as the Great Sage Plain (Eardly, 1958), lying east of the north-south trending
Monument Uplift, south of the Abajo Mountains and adjacent to the northwesterly-trending Paradox Fold
and Fault Belt (Figure 1.6-1). Topographically, the Abajo Mountains are the most prominent feature in the region, rising more than 4,000 feet (1,219 meters) above the broad, gently rolling surface of the Great Sage
Plain.
The Great Sage Plain is a structural slope, capped by the resistant Burro Canyon formation and the Dakota Sandstone, almost horizontal in an east-west direction but descends to the south with a regional slope of
about 2,000 feet (610 meters) over a distance of nearly 50 miles (80 kilometers). Though not as deeply or
intricately dissected as other parts of the Canyon Lands, the plain is cut by numerous narrow and vertical-walled south-trending valleys 100 to more than 500 feet (30 to 152+ meters) deep. Water from the
intermittent streams that drain the plain flow southward to the San Juan River, eventually joining the
Colorado River and exiting the Canyon Lands section through the Grand Canyon.
1.6.1.2 Rock Units (1978 ER Section 2.4.1.1)
The sedimentary rocks exposed in southeastern Utah have an aggregate thickness of about 6,000 to 7,000
feet (1,829 to 2,134 meters) and range in age from Pennsylvanian to Late Cretaceous. Older unexposed rocks are known mainly from oil well drilling in the Blanding Basin and Monument Uplift. These wells have encountered correlative Cambrian to Permian rock units of markedly differing thicknesses but
averaging over 5,000 feet (1,524 meters) in total thickness (Witkind, 1964). Most of the wells drilled in the region have bottomed in the Pennsylvanian Paradox Member of the Hermosa formation. A generalized
stratigraphic section of rock units ranging in age from Cambrian through Jurassic and Triassic (?), as
determined from oil-well logs, is shown in Table 1.6-1. Descriptions of the younger rocks, Jurassic through Cretaceous, are based on field mapping by various investigators and are shown in Table 1.6-2.
LEGEND ___ ..,.,,.
-
SADDLE
BOUNDARY OF TECTONIC DIVISION
MONOCLINE SHOWING TRACE OF AXIS
AND DIRECTION OF DIP
ANTICLINE SHOWING TRACE OF AXIS
AND DIRECTION OF PLUNGE
SYNCLINE SHOWING TRACE OF AXIS
AND DIRECTION OF PLUNGE
Figure 1.6-1
w :i: 0 Cl
Colorado Plateau Geologic Map
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Table 1.6-1
Generalized Stratigraphic Section of Subsurface Rocks Based on Oil-Well Logs (Table 2.6-1 UMETCO)

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Table 1.6-2
Generalized Stratigraphic Section of Exposed Rocks in the Project Vicinity (Table 2.6-2 UMETCO)

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Paleozoic rocks of Cambrian, Devonian and Mississippian ages are not exposed in the southeastern Utah
region. Most of the geologic knowledge regarding these rocks was learned from the deeper oil wells drilled in the region, and from exposures in the Grand Canyon to the southwest and in the Uinta and Wasatch
Mountains to the north. A few patches of Devonian rocks are exposed in the San Juan Mountains in
southwestern Colorado. These Paleozoic rocks are the result of periodic transgressions and regressions of epicontinental seas and their lithologies reflect a variety of depositional environments.
In general, the coarse-grained feldspathic rocks overlying the Precambrian basement rocks grade upward
into shales, limestones and dolomites that dominate the upper part of the Cambrian. Devonian and Mississippian dolomites, limestones and interbedded shales unconformably overlay the Cambrian strata.
The complete absence of Ordovician and Silurian rocks in the Grand Canyon, Uinta Mountains, southwest
Utah region and adjacent portions of Colorado, New Mexico and Arizona indicate that the region was probably epeirogenically positive during these times.
The oldest stratigraphic unit that crops out in the region is the Hermos formation of Middle and Late Pennsylvanian age. Only the uppermost strata of this formation are exposed, the best exposure being in the canyon of the San Juan River at the "Goosenecks" where the river traverses the crest of the Monument
uplift. Other exposures are in the breached centers of the Lisbon Valley, Moab and Castle Valley anticlines. The Paradox Member of the Hermosa formation is sandwiched between a relatively thin lower unnamed
member consisting of dark-gray shale siltstone, dolomite, anhydrite, and limestone, and an upper unnamed
member of similar lithology but having a much greater thickness. Composition of the Paradox Member is dominantly a thick sequence of interbedded slate (halite), anhydrite, gypsum, and black shale. Surface
exposures of the Paradox in the Moab and Castle Valley anticlines are limited to contorted residues of
gypsum and black shale.
Conformably overlying the Hermosa is the Pennsylvanian and Permian (?) Rico formation, composed of
interbedded reddish-brown arkosic sandstone and gray marine limestone. The Rico represents a transition
zone between the predominantly marine Hermosa and the overlying continental Cutler formation of Permian age.
Two members of the Cutler probably underlying the region south of Blanding are, in ascending order, the
Cedar Mesa Sandstone and the Organ Rock Tongue. The Cedar Mesa is a white to pale reddish-brown, massive, cross-bedded, fine- to medium-grained eolian sandstone. An irregular fluvial sequence of reddish-
brown fine-grained sandstones, shaly siltstones and sandy shales comprise the Organ Rock Tongue.
The Moenkopi formation, of Middle (?) and Lower Triassic age, unconformably overlies the Cutler strata. It is composed of thin, evenly-bedded, reddish to chocolate-brown, ripple-marked, cross-laminated siltstone
and sandy shales with irregular beds of massive medium-grained sandstone.
A thick sequence of complex continental sediments known as the Chinle formation unconformably overlies the Moenkopi. For the purpose of making lithology correlations in oil wells this formation is divided into
three units: The basal Shinarump Member, the Moss Back Member and an upper undivided thick sequence of variegated reddish-brown, reddish- to greenish-gray, yellowish-brown to light-brown bentonitic
claystones, mudstones, sandy siltstone, fine-grained sandstone, and limestones. The basal Shinarump is
dominantly a yellowish-grey, fine- to coarse-grained sandstone, conglomeratic sandstone and conglomerate characteristically filling ancient stream channel scours eroded into the Moenkopi surface. Numerous
uranium deposits have been located in this member in the White Canyon mining district to the west of
Comb Ridge. The Moss Back is typically composed of yellowish- to greenish-grey, fine- to medium-grained sandstone, conglomeratic sandstone and conglomerate. It commonly comprises the basal unit of
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the Chinle where the Shinarump was not deposited, and in a like manner, fills ancient stream channels
scoured into the underlying unit.
In the Blanding Basin the Glen Canyon Group consists of three formations which are, in ascending order,
the Wingate Sandstone, the Kayenta and the Navajo Sandstone. All are conformable and their contacts are
gradational. Commonly cropping out in sheer cliffs, the Late Triassic Wingate Sandstone is typically composed of buff to reddish-brown, massive, cross-bedded, well-sorted, fine-grained quartzose sandstone
of eolian origin. Late Triassic (?) Kayenta is fluvial in origin and consists of reddish-brown, irregularly to
cross-bedded sandstone, shaly sandstone and, locally, thin beds of limestone and conglomerate. Light yellowish-brown to light-gray and white, massive, cross-bedded, friable, fine- to medium-grained quartzose
sandstone typifies the predominantly eolian Jurassic and Triassic (?) Navajo Sandstone.
Four formations of the Middle to Late Jurassic San Rafael Group unconformably overly the Navajo Sandstone. These strata are composed of alternating marine and non-marine sandstones, shales and
mudstones. In ascending order, the formations are the Carmel formation, Entrada Sandstone, Summerville formation, and Bluff Sandstone. The Carmel usually crops out as a bench between the Navajo and Entrada Sandstones. Typically reddish-brown muddy sandstone and sandy mudstone, the Carmel locally contains
thin beds of brown to gray limestone and reddish- to greenish-gray shale. Predominantly eolian in origin, the Entrada is a massive cross-bedded fine- to medium-grained sandstone ranging in color from reddish-
brown to grayish-white that crops out in cliffs or hummocky slopes. The Summerville is composed of
regular thin-bedded, ripple-marked, reddish-brown muddy sandstone and sandy shale of marine origin and forms steep to gentle slopes above the Entrada. Cliff-forming Bluff Sandstone is present only in the
southern part of the Monticello district thinning northward and pinching out near Blanding. It is a white to
grayish-brown, massive, cross-bedded eolian sandstone.
In the southeastern Utah region the Late Jurassic Morrison formation has been divided in ascending order
into the Salt Wash, Recapture, Westwater Canyon, and Brushy Basin Members. In general, these strata are
dominantly fluvial in origin but do contain lacustrine sediments. Both the Salt Wash and Recapture consist of alternating mudstone and sandstone; the Westwater Canyon is chiefly sandstone with some sandy
mudstone and claystone lenses, and the heterogenous Brushy Basin consists of variegated bentonitic
mudstone and siltstone containing scattered thin limestone, sandstone, and conglomerate lenses. As strata of the Morrison formation are the oldest rocks exposed in the Mill area vicinity and are one of the two
principal uranium-bearing formations in southeast Utah, the Morrison, as well as younger rocks, are
described in more detail in Section 1.6.2.2.
The Early Cretaceous Burro Canyon formation rests unconformably (?) on the underlying Brushy Basin
Member of the Morrison formation. Most of the Burro Canyon consists of light-colored, massive, cross-bedded fluvial conglomerate, conglomerate sandstone and sandstone. Most of the conglomerates are near the base. Thin, even-bedded, light-green mudstones are included in the formation and light-grey thin-
bedded limestones are sometimes locally interbedded with the mudstones near the top of the formation.
Overlying the Burro Canyon is the Dakota Sandstone of Upper Cretaceous age. Typical Dakota is dominantly yellowish-brown to light-gray, thick-bedded, quartzitic sandstone and conglomeratic sandstone
with subordinate thin lenticular beds of mudstone, gray carbonaceous shale and, locally, thin seams of impure coal. The contact with the underlying Burro Canyon is unconformable whereas the contact with
the overlying Mancos Shale is gradational from the light-colored sandstones to dark-grey to black shaly
siltstone and shale.
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Upper Cretaceous Mancos Shale is exposed in the region surrounding the project vicinity but not within it.
Where exposed and weathered, the shale is light-gray or yellowish-gray, but is dark, to olive-gray where fresh. Bedding is thin and well developed; much of it is laminated.
Quaternary alluvium within the project vicinity is of three types: alluvial silt, sand and gravels deposited
in the stream channels; colluvium deposits of slope wash, talus, rock rubble and large displaced blocks on slopes below cliff faces and outcrops of resistant rock; and alluvial and windblown deposits of silt and sand,
partially reworked by water, on benches and broad upland surfaces.
1.6.1.3 Structure and Tectonics (1978 ER Section 2.4.1.3)
According to Shoemaker (1954 and 1956), structural features within the Canyon Lands of southeastern Utah may be classified into three main categories on the basis of origin or mechanism of the stress that
created the structure. These three categories are: (1) structures related to large-scale regional uplifting or
downwarping (epeirogenic deformation) directly related to movements in the basement complex (Monument Uplift and the Blanding Basin); (2) structures resulting from the plastic deformation of thick
sequences of evaporite deposits, salt plugs and salt anticlines, where the structural expression at the surface is not reflected in the basement complex (Paradox Fold and Fault Belt); and (3) structures that are formed in direct response to stresses induced by magmatic intrusion including local laccolithic domes, dikes and
stocks (Abajo Mountains).
Each of the basins and uplifts within the Mill area region is an asymmetric fold usually separated by a
steeply dipping sinuous monocline. Dips of the sedimentary beds in the basins and uplifts rarely exceed a
few degrees except along the monocline (Shoemaker, 1956) where, in some instances, the beds are nearly vertical. Along the Comb Ridge monocline, the boundary between the Monument Uplift and the Blanding
Basin, approximately eight miles (12.9 kilometers) west of the Mill area, dips in the Upper Triassic Wingate
sandstone and in the Chinle formation are more than 40 degrees to the east.
Structures in the crystalline basement complex in the central Colorado Plateau are relatively unknown but
where monoclines can be followed in Precambrian rocks they pass into steeply dipping faults. It is probable
that the large monoclines in the Canyon Lands section are related to flexure of the layered sedimentary rocks under tangential compression over nearly vertical normal or high-angle reverse faults in the more
rigid Precambrian basement rocks (Kelley, 1955; Shoemaker, 1956; Johnson and Thordarson, 1966).
The Monument Uplift is a north-trending, elongated, upwarped structure approximately 90 miles (145 kilometers) long and nearly 35 miles (56 kilometers) wide. Structural relief is about 3,000 feet (914 meters)
(Kelley, 1955). Its broad crest is slightly convex to the east where the Comb Ridge monocline defines the
eastern boundary. The uniform and gently descending western flank of the uplift crosses the White Canyon slope and merges into the Henry Basin (Figure 1.6-1).
East of the Monument Uplift, the relatively equidimensional Blanding Basin merges almost imperceptibly with the Paradox Fold and Fault Belt to the north, the Four Corners Platform to the southeast and the Defiance Uplift to the south. The basin is a shallow feature with approximately 700 feet (213 meters) of
structural relief as estimated on top of the Upper Triassic Chinle formation by Kelley (1955), and is roughly 40 to 50 miles (64 to 80 kilometers) across. Gentle folds within the basin trend westerly to northwesterly
in contrast to the distinct northerly orientation of the Monument Uplift.
Situated to the north of the Monument Uplift and Blanding Basin is the most unique structural feature of the Canyon Lands section, the Paradox Fold and Fault Belt. This tectonic unit is dominated by northwest
trending anticlinal folds and associated normal faults covering an area about 150 miles (241 kilometers)
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long and 65 miles (104 kilometers) wide. These anticlinal structures are associated with salt flowage from
the Pennsylvanian Paradox Member of the Hermosa formation and some show piercement of the overlying younger sedimentary beds by plug-like salt intrusions (Johnson and Thordarson, 1966). Prominent valleys
have been eroded along the crests of the anticlines where salt piercements have occurred or collapses of the
central parts have resulted in intricate systems of step-faults and grabens along the anticlinal crests and flanks.
The Abajo Mountains are located approximately 20 miles (32 kilometers) north of the Mill area on the
more-or-less arbitrary border of the Blanding Basin and the Paradox Fold and Fault Belt (Figure 1.6-1). These mountains are laccolithic domes that have been intruded into and through the sedimentary rocks by
several stocks (Witkind, 1964). At least 31 laccoliths have been identified. The youngest sedimentary
rocks that have been intruded are those of Mancos Shale of Late Cretaceous age. Based on this and other vague and inconclusive evidence, Witkind (1964), has assigned the age of these intrusions to the Late
Cretaceous or early Eocene.
Nearly all known faults in the region of the Mill area are high-angle normal faults with displacements on the order of 300 feet (91 meters) or less (Johnson and Thordarson, 1966). The largest known faults within
a 40-mile (64 kilometer) radius around Blanding are associated with the Shay graben on the north side of the Abajo Mountains and the Verdure graben on the south side. Respectively, these faults trend
northeasterly and easterly and can be traced for approximate distances ranging from 21 to 34 miles (34 to
55 kilometers) according to Witkind (1964). Maximum displacements reported by Witkind on any of the faults are 320 feet (98 meters). Because of the extensions of Shay and Verdure fault systems beyond the
Abajo Mountains and other geologic evidence, the age of these faults is Late Cretaceous or post-Cretaceous
and antedate the laccolithic intrusions (Witkind, 1964).
A prominent group of faults is associated with the salt anticlines in the Paradox Fold and Fault Belt. These
faults trend northwesterly parallel to the anticlines and are related to the salt emplacement. Quite likely,
these faults are relief features due to salt intrusion or salt removal by solution (Thompson, 1967). Two faults in this region, the Lisbon Valley fault associated with the Lisbon Valley salt anticline and the Moab
fault at the southeast end of the Moab anticline have maximum vertical displacements of at least 5,000 feet
(1,524 meters) and 2,000 feet (609 meters), respectively, and are probably associated with breaks in the Precambrian basement crystalline complex. It is possible that zones of weakness in the basement rocks
represented by faults of this magnitude may be responsible for the beginning of salt flowage in the salt
anticlines, and subsequent solution and removal of the salt by groundwater caused collapse within the salt anticlines resulting in the formation of grabens and local complex block faults (Johnson and Thordarson,
1966).
The longest faults in the Colorado Plateau are located some 155 to 210 miles (249 to 338 kilometers) west of the Mill area along the western margin of the High Plateau section. These faults have a north to northeast
echelon trend, are nearly vertical and downthrown on the west in most places. Major faults included in this group are the Hurricane, Toroweap-Sevier, Paunsaugunt, and Paradise faults. The longest fault, the
Toroweap-Sevier, can be traced for about 240 miles (386 kilometers) and may have as much as 3,000 feet
(914 meters) of displacement (Kelley, 1955).
From the later part of the Precambrian until the middle Paleozoic the Colorado Plateau was a relatively
stable tectonic unit undergoing gentle epeirogenic uplifting and downwarping during which seas
transgressed and regressed, depositing and then partially removing layers of sedimentary materials. This period of stability was interrupted by northeast-southwest tangential compression that began sometime
during late Mississippian or early Pennsylvanian and continued intermittently into the Triassic. Buckling
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along the northeast margins of the shelf produced northwest-trending uplifts, the most prominent of which
are the Uncompahgre and San Juan Uplifts, sometimes referred to as the Ancestral Rocky Mountains. Clearly, these positive features are the earliest marked tectonic controls that may have guided many of the
later Laramide structures (Kelley, 1955).
Subsidence of the area southwest of the Uncompahgre Uplift throughout most of the Pennsylvanian led to the filling of the newly formed basin with an extremely thick sequence of evaporites and associated
interbeds which comprise the Paradox Member of the Hermosa formation (Kelley, 1958). Following
Paradox deposition, continental and marine sediments buried the evaporite sequence as epeirogenic movements shifted shallow seas across the region during the Jurassic, Triassic and much of the Cretaceous.
The area underlain by the Paradox Member in eastern Utah and western Colorado is commonly referred to
as the Paradox Basin (Figure 1.6-1). Renewed compression during the Permian initiated the salt anticlines and piercements, and salt flowage continued through the Triassic.
The Laramide orogeny, lasting from Late Cretaceous through Eocene time, consisted of deep-seated compressional and local vertical stresses. The orogeny is responsible for a north-south to northwest trend in the tectonic fabric of the region and created most of the principal basins and uplifts in the eastern-half of
the Colorado Plateau (Grose, 1972; Kelley, 1955).
Post-Laramide epeirogenic deformation has occurred throughout the Tertiary; Eocene strata are flexed
sharply in the Grand Hogback monocline, fine-grained Pliocene deposits are tilted on the flanks of the
Defiance Uplift, and Pleistocene deposits in Fisher Valley contain three angular unconformaties (Shoemaker, 1956).
1.6.2 Blanding Site Geology
The following descriptions of physiography and topography; rock units; structure; relationship of earthquakes to tectonic structure; and potential earthquake hazards to the Mill area are reproduced from the
1978 ER for ease of reference and as a review of the Mill site geology (see Figure 1.6-2).
1.6.2.1 Physiography and Topography (1978 ER Section 2.4.2.1)
The Mill site is located near the center of White Mesa, one of the many finger-like north-south trending mesas that make up the Great Sage Plain. The nearly flat upland surface of White Mesa is underlain by
resistant sandstone caprock which forms steep prominent cliffs separating the upland from deeply
entrenched intermittent stream courses on the east, south and west.
Surface elevations across the Mill site range from about 5,550 to 5,650 feet (1,692 to 1,722 meters) and the
gently rolling surface slopes to the south at a rate of approximately 60 feet per mile (18 meters per 1.6 kilometer).

,:
~ ~ !'l ~ ~
REFERENCES: GEOLOGY, IN PART, AFTER HAYNES ET AL, 1962. BASE MAP PREPARED FROM PORTIONS
. OF THE BLANDING, BRUSHY BASIN WASH, BLUFF, AND MONTEZUMA CREEK U.S.G.S.
15-MINUTE TOPOGRAPHIC QUADRANGLES.
EXPl,.ANATION
Qae LOESS
Km~ MANCOS SHALE
Kdb DAKOTA ANO BURRO' CANYON
FORMATIONS (UNDIFFERENTIATED)
Jmb MORRISON FORMATION:
BRUSHY BASIN MEMBER
Jmw · WESTWATER CANYON MEMBER
Jmr A ECAPTURE MEMBER
................ CONTACT, DASHED WHERE
APPROXIMATE
N.
!ooo o 3000 eooo
bi F3 A ba ;;;;;J I
SCALE IN FEET
'Cf!£RGYFUELS
Project:
County:
WHITE MESA MILL
San Juan tate: Utah
FIGURE 1.6-2
WHITE MESA MILLSITE
GEOLOGY OF SURROUNDING AREA
:;: Date: Nov. 2009 L,.. _______________________ ..._ ___ ........, __ ..... _____ ..... ______ _ Design: Dratted By RAH
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Maximum relief between the mesa's surface and Cottonwood Canyon on the west is about 750 feet (229
meters) where Westwater Creek joins Cottonwood Wash. These two streams and their tributaries drain the west and south sides of White Mesa. Drainage on the east is provided by Recapture Creek and its tributaries.
Both Cottonwood Wash and Recapture Creeks are normally intermittent streams and flow south to the San
Juan River. However, Cottonwood Wash has been known to flow perennially in the project vicinity during wet years.
1.6.2.2 Rock Units (1978 ER Section 2.4.2.2)
Only rocks of Jurassic and Cretaceous ages are exposed in the vicinity of the Mill site. These include, in
ascending order, the Upper Jurassic Salt Wash, Recapture, Westwater Canyon, and Brushy Basin Members of the Morrison formation; the Lower Cretaceous Burro Canyon formation; and the Upper Cretaceous
Dakota Sandstone. The Upper Cretaceous Mancos Shale is exposed as isolated remnants along the rim of
Recapture Creek valley several miles southeast of the Mill site and on the eastern flanks of the Abajo Mountains some 20 miles (32 kilometers) north but is not exposed at the Mill site. However, patches of
Mancos Shale may be present within the Mill site boundaries as isolated buried remnants that are obscured by a mantle of alluvial windblown silt and sand.
The Morrison formation is of particular economic importance in southeast Utah since several hundred
uranium deposits have been discovered in the basal Salt Wash Member (Stokes, 1967).
In most of eastern Utah, the Salt Wash Member underlies the Brushy Basin. However, just south of Blanding in the project vicinity the Recapture Member replaces an upper portion of the Salt Wash and the
Westwater Canyon Member replaces a lower part of the Brushy Basin. A southern limit of Salt Wash deposition and a northern limit of Westwater Canyon deposition has been recognized by Haynes et al.
(1972) in Westwater Canyon approximately three to six miles (4.8 to 9.7 kilometers), respectively,
northwest of the Mill site. However, good exposures of Salt Wash are found throughout the Montezuma Canyon area 13 miles (21 kilometers) to the east.
The Salt Wash Member is composed dominantly of fluvial fine-grained to conglomeratic sandstones, and
interbedded mudstones. Sandstone intervals are usually yellowish-brown to pale reddish-brown while the mudstones are greenish- and reddish-gray. Carbonaceous materials ("trash") vary from sparse to abundant.
Cliff-forming massive sandstone and conglomeratic sandstone in discontinuous beds make up to 50 percent
or more of the member. According to Craig et al. (1955), the Salt Wash was deposited by a system of braided streams flowing generally east and northeast. Most of the uranium-vanadium deposits are located
in the basal sandstones and conglomeratic sandstones that fill stream-cut scour channels in the underlying
Bluff Sandstone, or where the Bluff Sandstone has been removed by pre-Morrison erosion, in similar channels cut in the Summerville formation. Mapped thicknesses of this member range from zero to
approximately 350 feet (0-107 meters) in southeast Utah. Because the Salt Wash pinches out in a southerly direction in Recapture Creek three miles (4.8 kilometers) northwest of the Mill site and does not reappear until exposed in Montezuma Canyon, it is not known for certain that the Salt Wash actually underlies the
site.
The Recapture Member is typically composed of interbedded reddish-gray, white, and light-brown fine- to
medium-grained sandstone and reddish-gray, silty and sandy claystone. Bedding is gently to sharply
lenticular. Just north of the Mill site, the Recapture intertongues with and grades into the Salt Wash and the contact between the two cannot be easily recognized. A few spotty occurrences of uriniferous
mineralization are found in sandstone lenses in the southern part of the Monticello district and larger
deposits are known in a conglomeratic sandstone facies some 75 to 100 miles (121 to 161 kilometers) southeast of the Monticello district. Since significant ore deposits have not been found in extensive
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outcrops in more favorable areas, the Recapture is believed not to contain potential resources in the Mill
site (Johnson and Thordarson, 1966).
Just north of the Mill site, the Westwater Canyon Member intertongues with and grades into the lower part
of the overlying Brushy Basin Member. Exposures of the Westwater Canyon in Cottonwood Wash are
typically composed of interbedded yellowish- and greenish-gray to pinkish-gray, lenticular, fine- to coarse-grained arkosic sandstone and minor amounts of greenish-gray to reddish-brown sandy shale and mudstone.
Like the Salt Wash, the Westwater Canyon Member is fluvial in origin, having been deposited by streams
flowing north and northwest, coalescing with streams from the southwest depositing the upper part of the Salt Wash and the lower part of the Brushy Basin (Huff and Lesure, 1965). Several small and scattered
uranium deposits in the Westwater Canyon are located in the extreme southern end of the Monticello
district. Both the Recapture Member and the Westwater Canyon contain only traces of carbonaceous materials, are believed to be less favorable host rocks for uranium deposition (Johnson and Thordarson,
1966) and have very little potential for producing uranium reserves.
The lower part of the Brushy Basin is replaced by the Westwater Canyon Member in the Blanding area but the upper part of the Brushy Basin overlies this member. Composition of the Brushy Basin is dominantly
variegated bentonitic mudstone and siltstone. Bedding is thin and regular and usually distinguished by color variations of gray, pale-green, reddish-brown, pale purple, and maroon. Scattered lenticular thin beds
of distinctive green and red chert-pebble conglomeratic sandstone are found near the base of the member,
some of which contain uranium-vanadium mineralization in the southernmost part of the Monticello district (Haynes et al., 1972). Thin discontinuous beds of limestone and beds of grayish-red to greenish-black
siltstone of local extent suggest that much of the Brushy Basin is probably lacustrine in origin.
For the most part, the Great Sage Plain owes its existence to the erosion of resistant sandstones and conglomerates of the Lower Cretaceous Burro Canyon formation. This formation unconformably (?)
overlies the Brushy Basin and the contact is concealed over most of the Mill area by talus blocks and slope
wash. Massive, light-gray to light yellowish-brown sandstone, conglomeratic sandstone and conglomerate comprise more than two-thirds of the formation's thickness. The conglomerate and sandstone are
interbedded and usually grade from one to the other. However, most of the conglomerate is near the base.
These rocks are massive cross-bedded units formed by a series of interbedded lenses, each lens representing a scour filled with stream-deposited sediments. In places the formation contains greenish-gray lenticular
beds of mudstone and claystone. Most of the Burro Canyon is exposed in the vertical cliffs separating the
relatively flat surface of White Mesa from the canyons to the west and east. In some places the resistant basal sandstone beds of the overlying Dakota Sandstone are exposed at the top of the cliffs, but entire cliffs
of Burro Canyon are most common. Where the sandstones of the Dakota rest on sandstones and conglomerates of the Burro Canyon, the contact between the two is very difficult to identify and most investigators map the two formations as a single unit (Figure 1.6-2). At best, the contact can be defined as
the top of a silicified zone in the upper part of the Burro Canyon that appears to be remnants of an ancient soil that formed during a long period of weathering prior to Dakota deposition (Huff and Lesure, 1965).
The Upper Cretaceous Dakota Sandstone disconformably overlies the Burro Canyon formation. Locally,
the disconformity is marked by shallow depressions in the top of the Burro Canyon filled with Dakota sediments containing angular to sub-rounded rock fragments probably derived from Burro Canyon strata
(Witkind, 1964) but the contact is concealed at the Mill site. The Dakota is composed predominantly of
pale yellowish-brown to light gray, massive, intricately cross-bedded, fine- to coarse-grained quartzose sandstone locally well-cemented with silica and calcite; elsewhere it is weakly cemented and friable.
Scattered throughout the sandstone are lenses of conglomerate, dark-gray carbonaceous mudstones and
shale and, in some instances, impure coal. In general, the lower part of the Dakota is more conglomeratic
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and contains more cross-bedded sandstone than the upper part which in normally more thinly bedded and
marine-like in appearance. The basal sandstones and conglomerates are fluvial in origin, whereas the carbonaceous mudstones and shales were probably deposited in back water areas behind beach ridges in
front of the advancing Late Cretaceous sea (Huff and Lesure, 1965). The upper sandstones probably
represent littoral marine deposits since they grade upward into the dark-gray siltstones and marine shales of the Mancos Shale.
The Mancos shale is not exposed in the project vicinity. The nearest exposures are small isolated remnants
resting conformably on Dakota Sandstone along the western rim above Recapture Creek 4.3 to 5.5 miles (6.9 to 8.9 kilometers) southeast of the Mill site. Additional exposures are found on the eastern and southern
flanks of the Abajo Mountains approximately 16 to 20 miles (26 to 32 kilometers) to the north. It is possible
that thin patches of Mancos may be buried at the Mill site but are obscured by the mantle of alluvial windblown silt and sand covering the upland surface. The Upper Cretaceous Mancos shale is of marine
origin and consists of dark- to olive-gray shale with minor amounts of gray, fine-grained, thin-bedded to blocky limestone and siltstone in the lower part of the formation. Bedding in the Mancos is thin and well developed, and much of the shale is laminated. Where fresh, the shale is brittle and fissile and weathers to
chips that are light- to yellowish-gray. Topographic features formed by the Mancos are usually subdued and commonly displayed by low rounded hills and gentle slopes.
A layer of Quaternary to Recent reddish-brown eolian silt and fine sand is spread over the surface of the
Mill site. Most of the loess consists of subangular to rounded frosted quartz grains that are coated with iron oxide. Basically, the loess is massive and homogeneous, ranges in thickness from a dust coating on the
rocks that form the rim cliffs to more than 20 feet (6 meters), and is partially cemented with calcium
carbonate (caliche) in light-colored mottled and veined accumulations which probably represent ancient immature soil horizons.
1.6.2.3 Structure (1978 ER Section 2.4.2.3)
The geologic structure at the Mill site is comparatively simple. Strata of the underlying Mesozoic
sedimentary rocks are nearly horizontal; only slight undulations along the caprock rims of the upland are perceptible and faulting is absent. In much of the area surrounding the Mill site the dips are less than one
degree. The prevailing regional dip is about one degree to the south. The low dips and simple structure are
in sharp contrast to the pronounced structural features of the Comb Ridge Monocline to the west and the Abajo Mountains to the north.
The Mill area is within a relatively tectonically stable portion of the Colorado Plateau noted for its scarcity
of historical seismic events. The epicenters of historical earthquakes from 1853 through 1986 within a 200-mile (320 km) radius of the site are shown in Figure 1.6-3. More than 1,146 events have occurred in the
area, of which at least 45 were damaging; that is, having an intensity of VI or greater on the Modified Mercalli Scale. A description of the Modified Mercalli Scale is given in Table 1.6-3. All intensities mentioned herein refer to this table. Table 1.6-3 also shows a generalized relationship between Mercalli
intensities and other parameters to which this review will refer. Since these relationships are frequently site specific, the table values should be used only for approximation and understanding. Conversely, the
border between the Colorado Plateau and the Basin and Range Province and Middle Rocky Mountain

11~ 110W 108W
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112W 110W 108W
1146 EAllfflQUAXES PJpl lED
MAGNITUDES
<4.0 •
NO INTENSITY OR. MAGNmJDB T JNI'ENSlTIES
J.IV • ,.o •. V • . 6.0' 7.0
vn a
JX a
NATIONAL GEOPHYSICAL DAT A CENTER/ NOAA BOULDER, CO 80303
~~RGYFUELS
Project: WHITE MESA MILL
County:
Date: Nov. 2009
San Juan late: Utah
FIGURE 1.6·3
SEISMICITY WITHIN 320 KM
OF THE WHITE MESA MILL
Design: Drafted By: RAH
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Energy Fuels Resources (USA) Inc. White Mesa Mill Reclamation Plan
Table 1.6-3 Modified Mercalli Scale
Modified Mercalli Scale, 1956 Versiona
Intensity Effects v. † cm/s g ‡
M§ I. Not felt. Marginal and long-period effects of large earthquakes (for details see text). 3 II. Felt by persons at rest on upper floors, or favorably placed. III. Felt indoors. Hanging objects swing. Vibration like passing of light trucks. Duration estimated.
May not be recognized as an earthquake.
0.0035-0.007
4
IV. Hanging objects swing. Vibration like passing of heavy trucks or sensation of a jolt like a heavy ball striking the walls. Standing motor cars rock. Windows, dishes, doors rattle. Glasses clink. Crockery clashes. In the upper range of IV wooden walls and frame creak.
0.007-0.015
V. Felt outdoors: direction estimated. Sleepers wakened. Liquids disturbed. Some spilled. Small
unstable objects displaced or upset. Doors swing close, open. Shutters, pictures move. Pendulum clocks stop, start, change rate.
1-3 0.015-0.035
5
VI. Felt by all. Many frightened and run outdoors. Persons walk unsteadily. Windows, dishes, glassware broken. Knickknacks, books, etc. off shelves. Pictures off walls. Furniture moved or overturned. Weak plaster and masonry D cracked. Small bells ring (church, school). Trees, bushes shaken (visibly, or heard to rustle - CFR).
3-7 0.035-0.07

6
VII. Difficult to stand. Noticed by drivers of motor cars. Hanging objects quiver. Furniture broken. Damage to masonry D including cracks. Weak chimneys broken at roof line. Fall of plaster, loose bricks, stones, tiles, cornices (also unbraced parapets and architectural ornaments - CFR).
Some cracks in masonry C. Waves on ponds: water turbid with mud. Small slides and caving in along sand or gravel banks. Large bells ring. Concrete irrigation ditches damaged.
7-20 0.07-0.15
VIII. Steering of motor cars affected. Damage to masonry C; partial collapse. Some damage to
masonry B; none is masonry A. Fall of stucco and some masonry walls. Twisting, fall of chimneys, factory stacks, monuments, towers, elevated tanks. Frame houses moved on foundations if not bolted down; loose panel walls thrown out. Decayed piling broken off. Branches broken from trees. Changes in flow or temperature of springs and wells. Cracks in wet ground and on steep slopes.
20-80 0.15-0.35

7

IX.

General panic. Masonry D destroyed, masonry C heavily damaged. Sometimes with complete collapse, masonry B seriously damaged. (General damage to foundations - CFR). Frame structures, if not bolted, shifted off foundations. Frames rocked. Serious damage to reservoirs. Underground pipes broken. Conspicuous cracks in ground. In alluviated areas sand and mud ejected, earthquake fountains, sand craters.

.80-200

0.35-0.7

8

X.

Most masonry and frame structures destroyed with their foundations. Some well-built wooden structures and bridges destroyed. Serious damage to dams, dikes, embankments. Large landslides. Water thrown on banks of canals, rivers, lakes, etc. Sand and mud shifted horizontally on beaches and flat land. Rails bent slightly.

200-500

0.7-1.2
XI. Rails bent greatly. Underground pipelines completely out of service. >1.2
XII. Damage nearly total. Large rock masses displaced. Lines of sight and level distorted. Objects thrown into the air.
From Fig. 11.14
Note: Masonry A, B, C, D. To avoid ambiguity of language, the quality of masonry, brick or otherwise, is specified by the following lettering (which has no connection with the conventional Class A, B, C construction).
· Masonry A : Good workmanship, mortar, and design reinforced, especially laterally, and bound together by using steel, concrete, etc.; designed to resist lateral forces. · Masonry B : Good workmanship and mortar; reinforced, but not designed to resist lateral forces. · Masonry C : Ordinary workmanship and mortar; no extreme weaknesses such as non-ded-ia corners, but masonry is neither reinforced nor designed against horizontal forces.
· Masonry D : Week materials such as adobe, poor mortar, low standards of workmanship, week horizontally. aFrom Richter (1958). 1Adapted with permission of W. H. Freeman and Company by Hunt (1984). †Average peak ground velocity, cm/s. ‡Average peak acceleration (away from source). §Magnitude correlation.
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Province some 155 to 240 miles (249 to 386 km) west and northwest, respectively, from the site is one of
the most active seismic belts in the western United States.
Only 63 non-duplicative epicenters have been recorded within a 120 mile (200 km) radius of the Mill area
(Figure 1.6-4). Of these, 50 had an intensity IV or less (or unrecorded) and two were recorded as intensity
VI. The nearest event occurred in the Glen Canyon National Recreation Area approximately 38 miles (63 km) west-northwest of the Mill area. The next closest event occurred approximately 53 miles (88 km) to
the northeast. Just east of Durango, Colorado, approximately 99 miles (159 km) due east of the Mill area,
an event having local intensity of V was recorded on August 29, 1941 (Hadsell, 1968). It is very doubtful that these events would have been felt in the vicinity of Blanding.
Three of the most damaging earthquakes associated with the seismic belt along the Colorado Plateau's
western border have occurred in the Elsinore-Richfield are about 168 miles (270 km) northwest of the Mill site. All were of intensity VIII. On November 13, 1901, a strong shock caused extensive damage from
Richfield to Parowan. Many brick structures were damaged; rockslides were reported near Beaver. Earthquakes with the ejection of sand and water were reported, and some creeks increased their flow. Aftershocks continued for several weeks (von Hake, 1977). Following several weeks of small foreshocks,
a strong earthquake caused major damage in the Monroe-Elsinore-Richfield area on September 29, 1921. Scores of chimneys were thrown down, plaster fell from ceilings, and a section of a new two-story brick
wall collapsed at Elsinore's schoolhouse. Two days later, on October 1, 1921, another strong tremor caused
additional damage to the area's structures. Large rockfalls occurred along both sides of the Sevier Valley and hot springs were discolored by iron oxides (von Hake, 1977). It is probable that these shocks may have
been perceptible at the Mill site but they certainly would not have caused any damage.
Seven events of intensity VII have been reported within 320 kilometers (km) around Blanding, Utah, which is the area shown in Figure 1.6-3. Of these, only two are considered to have any significance with respect
to the Mill site. On August 18, 1912, an intensity VII shock damaged houses in northern Arizona and was
felt in Gallup, New Mexico, and southern Utah. Rock slides occurred near the epicenter in the San Francisco Mountains and a 50-mile (80 km) earth crack was reported north of the San Francisco Range
(Cater, 1970). Nearly every building in Dulce, New Mexico, was damaged to some degree when shook by
a strong earthquake on January 22, 1966. Rockfalls and landslides occurred 10 to 15 miles (16 to 24 km) west of Dulce along Highway 17 where cracks in the pavement were reported (Hermann et al., 1980). Both
of these events may have been felt at the Mill site but, again, would certainly not have caused any damage.
Figure 1.6-4 shows the occurrence of seismic events within 200 km of Blanding.
1.6.2.4 Relationship of Earthquakes to Tectonic Structures
The majority of recorded earthquakes in Utah have occurred along an active belt of seismicity that extends
from the Gulf of California, through western Arizona, central Utah, and northward into western British Columbia. The seismic belt is possibly a branch of the active rift system associated with the landward extension of the East Pacific Rise (Cook and Smith, 1967). This belt is the Intermountain Seismic Belt
shown in Figure 1.6-5 (Smith, 1978).
It is significant to note that the seismic belt forms the boundary zone between the Basin and Range - Great
Basin Provinces and the Colorado Plateau - Middle Rocky Mountain Provinces. This block-faulted zone
is about 47 to 62 miles (75 to 100 km) wide and forms a tectonic transition zone between the relatively simple structures of the Colorado Plateau and the complex fault-controlled structures of the Basin and
Range Province (Cook and Smith, 1967).

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NATIONAL GEOPHYSICAL DAT A CENTER/ NOAA BOULDER, CO 80303
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Project: WHITE MESA MILL
County:
Date: Nov. 2009
San Juan tale: Utah
FIGURE 1.6-4
SEISMICITY WITHIN 200 KM
OF THE WHITE MESA MILL
Design: Drafted By: RAH
[I! :, CJ) U: 6 .f ~ ~ ~ "' c::
§
·-ra ~ ~ ~ I I ::::,
• 200
..
! ..
I
t . . ;···----.--. ~
-··-----~ -...___;,,,, --~-----,-
PR.OJ CT SITE
RIO GRANDE
·------·-·
. ~ -
Modified from Smith, 1978
SHOWS RELATIONSHIP OF THE COLORADO
PLATEAU PROVINCE TO MARCANAL BEL TS
San Juan Utah
FIGURE 1.6-5
SEISMICITY OF THE WESTERN UNITED STATES
1950 TO 1976
~ After-UmetGo. 1qe,e, ~ 1-cD~at-e:---------r=D:-es-,---ign-: -------.a;-:Dra:-;:lte:--:;d--;;:By:-. -RA-H----------i ;;:L ____________________________ ..__....,N.,ov ... .,20.,.00,..._._ _________ . ______ ,.
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Another zone of seismic activity is in the vicinity of Dulce, New Mexico, near the Colorado border. This
zone, which coincides with an extensive series of tertiary intrusives, may also be related to the northern end of the Rio Grande Rift. This rift is a series of fault-controlled structural depressions extending southward
from southern Colorado through central New Mexico and into Mexico. The rift is shown on Figure 1.6-5
trending north-south to the east of the Mill area.
Most of the events south of the Utah border of intensity V and greater are located within 50 miles (80 km)
of post-Oligocene extrusives. This relationship is not surprising because it has been observed in many other
parts of the world (Hadsell, 1968).
In Colorado, the Rio Grande Rift zone is one of three siesmotectonic provinces that may contribute energy
to the study area. Prominent physiographic expression of the rift includes the San Luis Valley in southern
Colorado. The valley is a half-graben structure with major faulting on the eastern flank. Extensional tectonics is dominant in the area and very large earthquakes with recurrence intervals of several thousand
years have been projected (Kirkham and Rogers, 1981). Mountainous areas to the west of the Rio Grande rift province include the San Juan Mountains. These mountains are a complex domicia uplift with extensive Oligocene and Miocene volcanic cover. Many faults are associated with the collapse of the calderas and
apparently have not moved since. Faults of Neogene age exist in the eastern San Juan Mountains that may be related to the extension of the Rio Grande rift. Numerous small earthquakes have been felt or recorded
in the western mountainous province despite an absence of major Neogene tectonic faults (Kirkham and
Rogers, 1981).
The third seismotectonic province in Colorado, that of the Colorado Plateau, extends into the surrounding
states to the west and south. In Colorado, the major tectonic element that has been recurrently active in the
Quaternary is the Uncompahgre uplift. Both flanks are faulted and earthquakes have been felt in the area. The faults associated with the Salt Anticlines are collapsed features produced by evaporite solution and
flowage (Cater, 1970). Their non-tectonic origin and the plastic deformation of the salt reduce their
potential for generating even moderate-sized earthquakes (Kirkham and Rogers, 1981).
Case and Joesting (1972) have called attention to the fact that regional seismicity of the Colorado Plateau
includes a component added by basement faulting. They inferred a basement fault trending northeast along
the axis of the Colorado River through Canyonlands. This basement faulting may be part of the much larger structure that Hite (1975) examined and Warner (1978) named the Colorado lineament (Figure 1.6-6). This
1,300-mile (2,100 km) long lineament that extends from northern Arizona to Minnesota is suggested to be
a Precambrian wrench-fault system formed some 2.0 to 1.7 billion years before present. While it has been suggested that the Colorado lineament is a source zone for larger earthquakes (m = 4 to 6) in the west-
central United States, the observed spatial relationship between epicenters and the trace of the lineament does not prove a casual relation (Brill and Nuttli, 1983). In terms of contemporary seismicity, the lineament does not act as a uniform earthquake generator. Only specific portions of the proposed structure can
presently be considered seismic source zones and each segment exhibits seismicity of distinctive activity and character (Wong, 1981). This is a reflection of the different orientations and magnitudes of the stress fields along the lineament. The interior of the Colorado Plateau forms a tectonic stress province, as defined
by Zoback and Zoback (1980), that is characterized by generally east-west tectonic compression. Only where extensional stresses from the Basin and Range province of the Rio Grande rift extend into the
Colorado Plateau would the Colorado lineament in the local area be suspected of having the capability of
generating a large magnitude earthquake (Wong, 1984). At present, the well-defined surface expression of regional extension is far to the west and far to the east of the Mill area.

SOURCE: WARNER, 1978
Project:
County:
Date: Nov. 2009
WHITE MESA MILL
San Juan late: Utah
FIGURE 1.6-6
COLORADO LINEAMENT
Design: Dratted By: RAH
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Work by Wong (1984) has helped define the seismicity of the whole Colorado Plateau. He called attention
to the low level (less than local magnitude, ML = 3.6) but high number (30) of earthquakes in the Capitol Reef Area from 1978 to 1980 that were associated with the Waterpocket fold and the Cainville monocline,
two other major tectonic features of the Colorado Plateau. Only five earthquakes in the sequence were of
ML greater than three, and fault plane solutions suggest the swarm was produced by normal faulting along northwest-trending Precambrian basement structures (Wong, 1984). The significance of the Capitol Reef
seismicity is its relatively isolated occurrence within the Colorado Plateau and its location at a geometric
barrier in the regional stress field (Aki, 1979). Stress concentration that produces earthquakes at bends or junctures of basement faults as indicated by this swarm may occur at other locations in the Colorado Plateau
Province. No inference that earthquakes such as those at Capitol Reef are precursors for larger subsequent
events is implied.
1.6.2.5 Potential Earthquake Hazards to Mill Area
The Mill site is located in a region known for its scarcity of recorded seismic events. Although the seismic
history for this region is barely 135 years old, the epicentral pattern, or fabric, is basically set and appreciable changes are not expected to occur. Most of the larger seismic events in the Colorado Plateau occurred along its margins rather than in the interior central region. Based on the region's seismic history,
the probability of a major damaging earthquake occurring at or near the Mill site is remote. Studies by Algermissen and Perkins (1976) indicate that southeastern Utah, including the site, is in an area with a 90
percent probability that a horizontal acceleration of four percent gravity (0.04g) would not be exceeded
within 50 years. In 2002, the USGS updated the National Seismic Hazard Maps (NSHM), which show peak ground and spectral accelerations at 2 percent and 10 percent probability of exceedance in 50 years.
From these maps, it is determined that there is a 98 percent probability that a horizontal acceleration of
0.09g would not be exceeded within 50 years (Tetra Tech, 2006). Furthermore, an updated seismic hazard analysis performed by Tetra Tech (2010) for the site determined that there is a 98 percent probability that
a horizontal acceleration of 0.15g would not be exceeded within a 200-year design life of the tailings
management cells. The Tetra Tech (2010) report is included in Appendix D.
1.6.3 Site-Specific Probabilistic Seismic Hazard Analysis
A site-specific probabilistic seismic hazard analysis (PSHA) (MWH, 2015a) was conducted for the White
Mesa Mill site. The PSHA was performed to better understand the likelihood of potential earthquake sources, to correlate results with previous analyses conducted for the site, and to evaluate the contribution
of the seismic sources (e.g. deaggregation). This analysis assessed the site-specific seismic hazard using
Ground Motion Prediction Equations (GMPEs) to estimate seismically induced ground motions at the site. Seismic hazard analyses were previously conducted for the design of the Cell 4A and 4B facilities (Tetra
Tech, 2006; Tetra Tech, 2010) and in response to DWMRC review of EFRI responses to interrogatories on the Reclamation Plan (MWH, 2012). These analyses indicated that the seismic hazard at the site is dominated by background events in the Colorado Plateau.
The PSHA is based on a seismotectonic model and source characterization of the site and surrounding area. The study evaluated a 200-mile radius surrounding the site. The seismotectonic model identified three
general seismic sources in the study area: 1) seismicity of the Intermountain Seismic Belt (ISB), 2)
seismicity of the Colorado Plateau (CP), and 3) crustal faults that meet the NRC minimum criteria. Each source zone was characterized to establish input parameters for the seismic hazard analyses. The PSHA
was performed using HAZ43 (2014) software developed by Dr. Norman Abrahamson. Operational and
long-term design recommendations were developed based on the results from this PSHA and previous seismic investigations at the site.
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This study concluded that the maximum horizontal acceleration value at the Mill site for a seismic event
associated with an average return period of 10,000 years is 0.15g. Based on this maximum horizontal acceleration, a pseudo-static coefficient of 0.10g was used for seismic stability analyses of the reclaimed
tailings impoundments (presented in Appendix A).
1.7 Biota (1978 ER Section 2.9)
1.7.1 Terrestrial (1978 ER Section 2.9.1)
1.7.1.1 Flora (1978 ER Section 2.9.1.1)
The natural vegetation presently occurring within a 25-mile (40-km) radius of the site is very similar to that
of the potential, being characterized by pinyon-juniper woodland intergrading with big sagebrush (Artemisia tridentata) communities. The pinyon-juniper community is dominated by Utah juniper
(Juniperus osteosperma) with occurrences of pinyon pine (Pinus edulis) as a codominant or subdominant
tree species. The understory of this community, which is usually quite open, is composed of grasses, forbs, and shrubs that are also found in the big sagebrush communities. Common associates include galleta grass
(Hilaria jamesii), green ephedra (Ephedra viridis), and broom snakewood (Gutierrezia sarothrae). The big sagebrush communities occur in deep, well-drained soils on flat terrain, whereas the pinyon-juniper woodland is usually found on shallow rocky soil of exposed canyon ridges and slopes.
Seven community types are present on the Mill site (Table 1.7-1 and Figure 1.7-1). Except for the small portions of pinyon-juniper woodland and the big sagebrush community types, the majority of the plant
communities within the site boundary have been disturbed by past grazing and/or treatments designed to
improve the site for rangeland. These past treatments include chaining, plowing, and reseeding with crested wheatgrass (Agropyron desertorum). Controlled big sagebrush communities are those lands containing big
sagebrush that have been chained to stimulate grass production. In addition, these areas have been seeded
with crested wheatgrass. Both grassland communities I and II are the result of chaining and/or plowing and seeding with crested wheatgrass. The reseeded grassland II community is in an earlier stage of recovery
from disturbance than the reseeded grassland I community. The relative frequency, relative cover, relative
density, and importance values of species sampled in each community are presented in Dames and Moore, (1978b), Table 2.8-2. The percentage of vegetative cover in 1977 was lowest on the reseeded grassland II
community (10.7 percent) and highest on the big sagebrush community (33 percent) (Table 1.7-2).
Based upon dry weight composition, most communities on the site were in poor range condition in 1977 (Dames & Moore, 1978b, Tables 2.8-3 and 2.8-4). Pinyon-juniper, big sagebrush, and controlled big
sagebrush communities were in fair condition. However, precipitation for 1977 at the Mill site was classed
as drought conditions (Dames & Moore, 1978b, Section 2.8.2.1). Until July, no production was evident on the site.
Based on the work completed by Dames & Moore in the 1978 ER, no designated or proposed endangered plant species occur on or near the Mill site (Dames & Moore, 1978b, Section 2.8.2.1). Of the 65 proposed endangered species in Utah at that time, six have documented distributions on San Juan County. A review
of the habitat requirements and known distributions of these species by Dames & Moore in the 1978 ER indicated that, because of the disturbed environment, these species would probably not occur on the Mill
site. The Navajo Sedge has been added to the list as a threatened species since the 1978 ER.

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Table 1.7-1 Community Types and Expanse Within the Project site Boundary

Expanse
Community Type Ha Acres
Pinyon-juniper Woodland 5 13

Big Sagebrush

113

278
Reseeded Grassland I 177 438
Reseeded Grassland II 121 299
Tamarisk-salix 3 7

Controlled Big Sagebrush

230

569
Disturbed 17 41

Table 1.7-2
Ground Cover For Each Community Within the Project Site Boundary

Percentage of Each Type of Cover
Community Type Vegetative Cover Litter Bare Ground
Pinyon-juniper Woodlanda 25.9 15.6 55.6
Big Sagebrush 33.3 16.9 49.9

Reseeded Grassland I

15.2

24.2

61.0
Reseeded Grassland II 10.7 9.5 79.7
Tamarisk-salix 12.0 20.1 67.9
Controlled Big Sagebrush 17.3 15.3 67.4

Disturbed

13.2

7.0

80.0

aRock covered 4.4% of the ground.
EFRI
EF
R
I
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In completing the 2002 EA, NRC staff contacted wildlife biologists from the BLM and the Utah Wildlife
Service to gather local information on the occurrences of additional species surrounding the Mill. In the 2002 EA, NRC staff concluded that the Navajo Sedge has not been observed in the area surrounding
Blanding, and is typically found in areas of moisture (2002 EA).
In June 2012, the area surrounding the Mill site was surveyed for plant composition to supplement data presented in Dames & Moore (1978b). Survey results confirmed that two principal plant community types
in the vicinity of the Mill site. These plant communities are Big Sagebrush shrubland and Juniper
woodland. In addition to these two principal plant community types, there are a number of disturbed areas in different stages of successional development. These areas reflect past disturbances such as sagebrush
removal (chaining and plowing) and seeding and intense grazing, as evidenced by a complete lack of any
understory species in some areas. The vegetation survey conducted in 2012 provides information of species that exist on the Mill site and their relative importance in terms of plant cover. All areas surveyed in 2012
show that big sagebrush (Artemisia tridentata) is the dominant species and subdominants are either broom snakeweed (Gutierrezia sarothroae) or galleta (Hilaria jamesii). Additional discussion on this survey is provided in Appendix A.
1.7.1.2 Fauna (1978 ER Section 2.9.1.2)
Wildlife data have been collected through four seasons at several locations on the site. The presence of a species was based on direct observations, trappings and signs such as the occurrence of scat, tracks, or
burrows. A total of 174 vertebrate species potentially occur within the vicinity of the mill (Dames & Moore,
1978b, Appendix D), 78 of which were confirmed (Dames & Moore, 1978b, Section 2.8.2.2).
Although seven species of amphibians are thought to occur in the area, the scarcity of surface water limits
the use of the site by amphibians. The tiger salamander (Ambystoma tigrinum) was the only species
observed. It appeared in the pinyon-juniper woodland west of the Mill site (Dames & Moore, 1978b, Section 2.8.2.2).
Eleven species of lizards and five snakes potentially occur in the area. Three species of lizards were
observed: the sagebrush lizard (Sceloparas graciosus), western whiptail (Cnemidophorus tigris), and the short-horned lizard (Phrynosoma douglassi) (Dames & Moore, 1978b, Section 2.8.2.2). The sagebrush and
western whiptail lizard were found in sagebrush habitat, and the short-horned lizard was observed in the
grassland. No snakes were observed during the field work.
Fifty-six species of birds were observed in the vicinity of the Mill site (Table 1.7-3). The abundance of
each species was estimated by using modified Emlen transects and roadside bird counts in various habitats and seasons. Only four species were observed during the February sampling. The most abundant species was the horned lark (Eremophila aepestis) followed by the common raven (Corvus corax), which were both
concentrated in the grassland. Avian counts increased drastically in May. Based on extrapolation of the Emlen transect data, the avian density on grassland of the Mill site during spring was about 123 per 100 acres (305 per square kilometer). Of these individuals, 94 percent were horned larks and western
meadowlarks (Sturnella neglecta). This density and species composition are typical of rangeland habitats. In late June the species diversity declined somewhat in grassland but peaked in all other habitats. By
October the overall diversity decreased but again remained the highest in grassland.

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Table 1.7-3 Birds Observed in the Vicinity of the White Mesa Project

Species Relative Abundance and Statusa Species Relative Abundance and Statusa
Mallard CP Pinyon Jay CP
Pintail CP Bushtit CP
Turkey Vulture US Bewick's Wren CP
Red-tailed Hawk CP Mockingbird US
Golden Eagle CP Mountain Bluebird CS
Marsh Hawk CP Black-tailed Gnatcatcher H
Merlin UW Ruby-crowned Kinglet CP
American Kestrel CP Loggerhead Shrike CS
Sage Grouse UP Starling CP
Scaled Quail Not Listed Yellow-rumped Warbler CS
American Coot CS Western Meadowlark CP
Killdeer CP Red-winged Blackbird CP
Spotted Sandpiper CS Brewer's Blackbird CP
Mourning Dove CS Brown-headed Cowbird CS
Common Nighthawk CS Blue Grosbeak CS
White-throated Swift CS House Finch CP
Yellow-bellied Sapsucker CP American Goldfinch CP
Western Kingbird CS Green-tailed Towhee CS
Ash-throated Flycatcher CS Rufous-sided Towhee CP
Say's Phoebe CS Lark Sparrow CS
Horned Lark CP Black-throated Sparrow CS
Violet-green Swallow CS Sage Sparrow UC
Barn Swallow CS Dark-eyed Junco CW
Cliff Swallow CS Chipping Sparrow CS
Scrub Jay CP Brewer's Sparrow CS
Black-billed Magpie CP White-crowned Sparrow CS
Common Raven CP Song Sparrow CP
Common Crow CW Vesper Sparrow CS
aW. H. Behle and M. L. Perry, Utah Birds, Utah Museum of Natural History, University of Utah, Salt Lake City,
1975.

Relative Abundance

Status
C = Common

P = Permanent
U = Uncommon

S = Summer Resident
H = Hypothetical

W = Winter Visitant
Source: Dames & Moore (1978b), Table 2.8-5

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Raptors are prominent in the western United States. Five species were observed in the vicinity of the site
(Table 1.7-3). Although no nests of these species were located, all (except the golden eagle, Aquila chrysaetos) have suitable nesting habitat in the vicinity of the site. The nest of a prairie falcon (Falco
mexicanus) was found about 3/4 mile (1.2 km) east of the site. Although no sightings were made of this
species, members tend to return to the same nests for several years if undisturbed (Dames & Moore, 1978b, Section 2.8.2.2).
Of several mammals that occupy the site, mule deer (Odocoileus hemionus) is the largest species. The deer
inhabit the project vicinity and adjacent canyons during winter to feed on the sagebrush and have been observed migrating through the site to Murphy Point (Dames & Moore, 1978b, Section 2.8.2.2). Winter
deer use of the project vicinity, as measured by browse utilization, is among the heaviest in southeastern
Utah [25 days of use per acre (61 days of use per hectare) in the pinyon-juniper-sagebrush habitats in the vicinity of the Mill site]. In addition, this area is heavily used as a migration route by deer traveling to
Murphy Point to winter. Daily movement during winter periods by deer inhabiting the area has also been observed between Westwater Creek and Murphy Point. The present size of the local deer herd is not known.
Other mammals present at the site include the coyote (Canis latrans), red fox (Vulpes vulpes), gray fox
(Urocyon cineroargenteus), striped skunk (Mephitis mephitis), badger (taxidea taxus), longtail weasel (Mustela frenata), and bobcat (Lynx rufus). Nine species of rodents were trapped or observed on the site,
the deer mouse (Peromyscus maniculatus) having the greatest distribution and abundance. Although desert
cottontails (Sylvilagus auduboni) were uncommon in 1977, black-tailed jackrabbits (Lepus californicus) were seen during all seasons.
In the 2002 EA, NRC staff noted that, in the vicinity of the site, the U.S. Fish and Wildlife Service had
provided the list set out in Table 3.12-1 of the 2002 EA, of the endangered, threatened, and candidate species that may occur in the area around the site.
Table 1.7-4
Endangered, Threatened and Candidate Species in the Mill Area
Common Name Scientific Name Status
Navajo Sedge Carex specuicola Threatened
Bonytail Chub Gila elegans Endangered
Colorado Pikeminnow Ptychocheilus Lucius Endangered
Humpback Chub Gila cypha Endangered
Razorback Sucker Xyrauchen texanus Endangered
Bald Eagle Haliaeetus leucocephalus Threatened
California Condor Gymnogyps californianus Endangered
Gunnison Sage Grouse Centrocercus minimus Candidate
Mexican Spotted Owl Strix occidentalis lucida Threatened
Southwestern Willow Flycatcher Empidonax traillii extimus Endangered
Western Yellow-billed Cuckoo Coccyzus americanus occidentalis Candidate
Black-footed Ferret Mustela nigripes Endangered
Source: 2002 EA (NRC, 2002)

The 2002 EA also noted that, in addition, the species listed on Table 3.12-2 of the 2002 EA may occur
within the Mill area that are managed under Conservation Agreements/Strategies.
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Table 1.7-5
Species Managed Under Conservation Agreements/Strategies at the Mill Area
Common Name Scientific Name
Colorado River Cutthroat Trout Oncorhynchus clarki pleuriticus
Gunnison Sage Grouse Centrocercus minimus
Source: 2002 EA (NRC, 2002)

For the 2002 EA, NRC staff contacted wildlife biologists from the BLM and the Utah Wildlife Service to
gather local information on the occurrences of these additional species surrounding the Mill. NRC staff made the following conclusions (2002 EA p. 4):
While the ranges of the bald eagle, peregrine falcon, and willow flycatcher encompass the
project area, their likelihood of utilizing the site is extremely low. The black-footed ferret has not been seen in Utah since 1952, and is not expected to occur any longer in the area.
The California Condor has only rarely been spotted in the area of Moab, Utah, (70 miles
north) and around Lake Powell (approximately 50 miles south). The Mexican Spotted Owl is only found in the mountains in Utah, and is not expected to be on the Mesa. The
Southwestern Willow Flycatcher, Western Yellow-billed Cuckoo, and Gunnison Sage Grouse are also not expected to be found in the immediate area around the Mill site.
1.7.2 Aquatic Biota (1978 ER Section 2.9.2)
Aquatic habitat at the Mill site ranges temporally from extremely limited to nonexistent due to the aridity, topography and soil characteristics of the region and consequent dearth of perennial surface water. Two
small stock watering ponds, are located on the Mill site a few hundred yards from the ore pad area (see
Figure 1.5-3). One additional small “wildlife pond”, east of Cell 4A, was completed in 1994 to serve as a diversionary feature for migrating waterfowl (see Figure 1.5-3). Although more properly considered
features of the terrestrial environment, they essentially represent the total aquatic habitat on the Mill site.
These ponds probably harbor algae, insects, other invertebrate forms, and amphibians.
They also provide a water source for small mammals and birds. Similar ephemeral catch and seepage basins
are typical and numerous to the northeast of the Mill site and south of Blanding.
Aquatic habitat in the project vicinity is similarly limited. The three adjacent streams (Corral Creek, Westwater Creek, and an unnamed arm of Cottonwood Wash) are only intermittently active, carrying water
primarily in the spring during increased rainfall and snowmelt runoff, in the autumn, and briefly during
localized but intense electrical storms. Intermittent water flow most typically occurs in April, August, and October in those streams. Again, due to the temporary nature of these steams, their contribution to the
aquatic habitat of the region is probably limited to providing a water source for wildlife and a temporary
habitat for insect and amphibian species.
In the 2002 EA, NRC staff concluded that (p. 4) no populations of fish are present on the project site, nor
are any known to exist in the immediate area of the site. Four species of fish designated as endangered or threatened (the Bonytail Chub, Colorado Pikeminnow, Humpback Chub and Razorback Sucker) occur in the San Juan River 18 miles south of the site, which Dames & Moore noted in the 1978 ER (Section 2.8.2)
is the closest habitat suitable for these species. NRC staff further concluded that there are no discharges of
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Mill effluents to surface waters, and therefore, no impacts are expected for the San Juan River due to
operations of the Mill.
1.7.3 Background Radiation (2007 ER, Section 3.13.1)
All living things are continuously exposed to ionizing radiation from a variety of sources including cosmic
and cosmogenic radiation from space and external radiation from terrestrial radionuclides such as uranium, thorium and potassium-40 that occur in the earth’s crust, in building materials, in the air we breathe, the
food we eat, the water we drink and in our bodies.
Some exposures, such as that from potassium-40, are controlled by our body’s metabolism and are relatively constant throughout the world, but exposures from sources such as uranium and thorium in soils and
especially from radon in homes can vary greatly, by more than a factor of ten, depending on location.
In order to provide a context for exposures potentially attributable to radioactive emissions from processing ores and alternate feed materials at the Mill, this section provides some general background information on
exposures to natural background radiation worldwide, in the United States and in the Colorado Plateau
region where the Mill is located.
1.7.3.1 The World
In general terms, the worldwide breakdown of natural background radiation sources can be summarized as
follows (UNSCEAR, 2000):
Cosmic and Cosmogenic 39 mrem/yr
Terrestrial 48 mrem/yr
Inhaled (Radon) 126 mrem/yr Ingested 29 mrem /yr
Total (Average) 242 mrem/yr (116 mrem/yr excluding radon)

According to the United Nations Scientific Committee on the Effects of Atomic Radiation (“UNSCEAR”),
the actual doses can vary considerably from the nominal values listed above, and around the world vary
from this value by more than a factor of 10. For example, the dose from cosmic and cosmogenic radiation varies with altitude. The higher the altitude, the less is the protection offered by the earth’s atmosphere.
The dose from external gamma radiation can vary greatly depending on the levels of uranium and thorium
series radionuclides in the local soil. One example is the elevated gamma fields seen on natural sands containing heavy minerals as for example in regions around the Indian Ocean, in Brazil, and New Jersey.
The high variability in indoor radon concentrations is a major source of the variation in natural background
dose. The variability in the dose from radon arises from many factors, including: variability in soil radium concentrations from place to place; variation both over time and location in housing stock, heating and
ventilating systems; and variations in individual habits. The worldwide average ambient (i.e. outdoor) radon concentration is about 10 Bq/m3 (UNSCEAR, 2000) and the world average concentration of U-238 and Th-232 in soils is about 0.7 pCi/g (25 Bq/kg) (NRC, 1994).
The definition of “background radiation” in 10 CFR 20.1003 specifically includes global fallout as it exists in the environment from the testing of nuclear explosive devices or from past nuclear accidents such as
Chernobyl that contribute to background radiation and are not under the control of the licensee. The
calculation of background radiation in Section 3.13.1 of the 2007 ER is conservative because it does not include such fallout in background radiation for the Mill site.
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1.7.3.2 United States
In the United States, nominal average levels of natural background radiation are as follows (National
Council of Radiation Protection and Measurements (“NCRP”), 1987):
Cosmic and Cosmogenic 28 mrem/yr
Terrestrial 28 mrem/yr
Inhaled (Radon) 200 mrem/yr Ingested 40 mrem /yr
Total (Average) 296 mrem/yr (96 mrem/yr excluding radon)

As shown above, in the United States, the average annual dose from natural background radiation is about
296 mrem/yr (including radon). The actual annual dose from natural background varies by region within
the United States. For example, the average dose from external terrestrial radiation for a person living on the Colorado Plateau is in the order of 63 mrem/yr, which is considerably higher than the average dose from
terrestrial radiation for a person living in Florida, where the average annual dose from external terrestrial radiation is only about 16 mrem/yr. (NRC, 1994; NCRP, 1987). In the United States, outdoor radon levels vary widely from about 0.1 pCi/l in New York City to about 1.2 pCi/L in Colorado Springs (NCRP, 1987),
generally consistent with nominal worldwide values noted in the previous section.
1.7.4 Mill Site Background (1978 ER Section 2.10)
Radiation exposure in the natural environment is due to cosmic and terrestrial radiation and to the inhalation
of radon and its daughters. Measurements of the background environmental radioactivity were made at the Mill site using thermoluminescent dosimeters (“TLDs”). The results indicate an average total body dose
of 142 millirems per year, of which 68 millirems is attributable to cosmic radiation and 74 millirems to
terrestrial sources. The cosmogenic radiation dose is estimated to be about 1 millirem per year. Terrestrial radiation originates from the radionuclides potassium-40, rubidium-87, and daughter isotopes from the
decay of uranium-238, thorium-232, and, to a lesser extent, uranium-235. The dose from ingested
radionuclides is estimated at 18 millirems per year to the total body. The dose to the total body from all sources of environmental radioactivity is estimated to be about 161 millirems per year.
The concentration of radon in the area is estimated to be in the range of 500 to 1,000 pCi/m3, based on the
concentration of radium-226 in the local soil. Exposure to this concentration on a continuous basis would result in a dose of up to 625 millirems per year to the bronchial epithelium. As ventilation decreases, the
dose increases; for example, in unventilated enclosures, the comparable dose might reach 1,200 millirems per year.
The medical total body dose for Utah is about 75 millirems per year per person. The total dose in the area
of the mill from natural background and medical exposure is estimated to be 236 millirems per year.
1.7.5 Current Monitoring Data
The most recent data for gamma, vegetation, air and stack sampling, groundwater, surface water,
meteorological monitoring, and soil sampling discussed in the following sections are found in the Semi-Annual Effluent Report for July through December 2015. See Section 2.3.2.1 for a more detailed discussion
of the environmental monitoring programs at the Mill.
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1.7.5.1 Environmental Radon
Environmental radon concentrations are determined by using Track Etch detectors. There is one detector
at each of eight environmental monitoring stations with a duplicate at BHV-2. See the Semi-Annual Effluent reports, for maps showing these locations.
1.7.5.2 Environmental Gamma
Gamma radiation levels are determined by optically stimulated luminescence dosimeters (“OSLs”). The
OSLs are placed at the eight environmental stations located around the perimeter boundary of the Mill site discussed above. The badges are exchanged quarterly. Recent data are presented in the Semi-Annual
Effluent Report for July through December 2015.
1.7.5.3 Vegetation Samples
Vegetation samples are collected at three locations around the Mill periphery. The sampling locations are northeast, northwest, and southwest of the Mill facility. Vegetation samples are collected three times per
year. Recent vegetation results are included in the Semi-Annual Effluent Report for July through December 2015. No trends are apparent, as concentrations at each sampling location have remained consistent.
1.7.5.4 Environmental Air Monitoring and Stack Sampling
Air monitoring at the Mill is conducted at seven high volume (40 standard cubic feet per minute) stations
located around the periphery of the Mill. These locations are shown on Figure 2.3-2. BHV-1 and BHV-8 are located at the northern Mill boundary. BHV-2 is further north at the nearest residence. BHV-4 is south
of Cell 3, BHV-5 is just south of the ore storage pad on the eastern boundary of the Mill property, BHV-6
is located on a vector between the Mill site and the White Mesa Ute Community, and BHV-7 is located on the eastern boundary of the Mill north of BHV-5. The Semi-Annual Effluent Reports contain air monitoring
data. The results of the quarterly stack samples are also presented in the Semi-Annual Effluent Reports.
Pursuant to NRC License Amendment No. 41 for the Mill’s Source Material License No. SUA-1358, air particulate radionuclide monitoring at BHV-3 was discontinued at the end of the third quarter of 1995.
Tables in the Semi-Annual Effluent Reports show the radionuclide concentrations at each location. No
trends are evident.
1.7.5.5 Surface Water
The results of surface water monitoring are presented in the Semi-Annual Effluent Reports. Cottonwood
Creek is sampled semi-annually and Westwater Creek is sampled on an annual basis. No trends are apparent.
1.7.5.6 Meteorological Monitoring
The Semi-Annual Air Quality and Meteorology Monitoring Report for July 1, 2015 through December 31,
2015 was provided by McVehil-Monnett and is available at the Mill.

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2 EXISTING FACILITY

The following sections describe the construction history of the Mill; the Mill and Mill tailings management facilities; Mill operations including the Mill circuit and tailings management; and both operational and
environmental monitoring.
2.1 Facility Construction History
The Mill is a uranium/vanadium mill that was developed in the late 1970s by Energy Fuels Nuclear, Inc.
(“EFN”) as an outlet for the many small mines that are located in the Colorado Plateau and for the possibility
of milling Arizona Strip ores. At the time of its construction, it was anticipated that high uranium prices would stimulate ore production. However, prices started to decline about the same time as Mill operations
commenced.
As uranium prices fell, producers in the region were affected and mine output declined. After about two and one-half years, the Mill ceased ore processing operations altogether, began solution recycle, and entered
a total shutdown phase. In 1984, a majority ownership interest was acquired by Union Carbide Corporation's (“UCC”) Metals Division which later became Umetco Minerals Corporation (“Umetco”), a wholly-owned subsidiary of UCC. This partnership continued until May 26, 1994 when EFN reassumed
complete ownership. In May 1997, Denison (then named International Uranium (USA) Corporation) and its affiliates purchased the assets of EFN. EFRI purchased Denison in July 2012 and is the current owner
of the facility.
2.1.1 Mill and Mill Tailings System
The Source Materials License Application for the Mill was submitted to the NRC on February 8, 1978.
Between that date and the date the first ore was fed to the Mill grizzly on May 6, 1980, several actions were
taken including: increasing Mill design capacity, permit issuance from the United States Environmental Protection Agency (“EPA”) and the State of Utah, archeological clearance for the Mill and tailings system,
and an NRC pre-operational inspection on May 5, 1980.
Construction on the Mill tailings system began on August 1, 1978 with the movement of earth from the area of Cell 2. Cell 2 was completed on May 4, 1980, Cell 1 on June 29, 1981, and Cell 3 on September 2,
1982. In January 1990 an additional cell, designated Cell 4A, was completed and initially used solely for
solution storage and evaporation. Cell 4A was only used for a short time and then taken out of service because of concerns about the synthetic lining system. In 2007, Cell 4A was retrofitted with a new State
of Utah approved lining system and was authorized to begin accepting process solutions in September 2008. Cell 4A was put back into service in October 2008. Cell 4B was constructed in 2010 and authorized to begin accepting process solutions in February 2011.
2.2 Facility Operations
In the following subsections, an overview of Mill operations and operating periods are followed by
descriptions of the operations of the Mill circuit and tailings management facilities.
2.2.1 Operating Periods
The Mill was operated by EFN from the initial start-up date of May 6, 1980 until the cessation of operations
in 1983. Umetco, as per agreement between the parties, became the operator of record on January 1, 1984.
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The Mill was shut down during all of 1984. The Mill operated at least part of each year from 1985 through
1990. Mill operations again ceased during the years of 1991 through 1994. EFN reacquired sole ownership on May 26, 1994, and the Mill operated again during 1995 and 1996. After acquisition of the Mill by
Denison and its affiliates several local mines were restarted and the Mill processed conventional ore during
1999 and early 2000. With the resurgence in uranium and vanadium prices in 2003, Denison reopened several area mines and again began processing uranium and vanadium ores in April 2008. Mill operations
were suspended in May 2009, and resumed in March 2010. Conventional ore processing was again
suspended in July 2011, resumed in November 2011 through March 2012, and suspended in April 2012. Denison became EFRI after July 25, 2012. Conventional ore processing resumed from August 2012
through June 2013, was suspended in July 2013, resumed May 2014 through August 2014, and was
suspended again in September 2014. Typical employment figures for the Mill are approximately 110 during uranium-only operations and 150 during uranium/vanadium operations.
Commencing in the early 1990s through today, the Mill has processed alternate feed materials from time to time when the Mill has not been processing conventional ores. Alternate feed materials are uranium-bearing materials other than conventionally mined uranium ores. The Mill installed an alternate feed circuit
in 2009 that allows the Mill to process certain alternate feed materials simultaneously with conventional ores.
2.2.2 Mill Circuit
While originally designed for a capacity of 1,500 dry tons per day (dtpd), the Mill capacity was boosted to the present rated design of 1,980 dtpd prior to commissioning.
The Mill uses an atmospheric hot acid leach followed by counter current decantation (CCD). This in turn
is followed by a clarification stage which precedes the solvent extraction (SX) circuit. Kerosene containing iso-decanol and tertiary amines extracts the uranium and vanadium from the aqueous solution in the SX
circuit. Salt and soda ash are then used to strip the uranium and vanadium from the organic phase.
After extraction of the uranium values from the aqueous solution in SX, uranium is precipitated with anhydrous ammonia, dissolved, and re-precipitated to improve product quality. The resulting precipitate is
then washed and dewatered using centrifuges to produce a final product called "yellowcake." The
yellowcake is dried in a multiple hearth dryer and packaged in drums weighing approximately 800 to 1,000 lbs. for shipping to converters.
After the uranium values are stripped from the pregnant solution in SX, the vanadium values are transferred
to tertiary amines contained in kerosene and concentrated into an intermediate product called vanadium product liquor (VPL). An intermediate product, ammonium metavanadate (AMV), is precipitated from the
VPL using ammonium sulfate in batch precipitators. The AMV is then filtered on a belt filter and, if necessary, dried. Normally, the AMV cake is fed to fusion furnaces where it is converted to the Mill's primary vanadium product, V2O5 tech flake, commonly called "black flake."
The same basic process steps used for the recovery of uranium from conventional ores are used for the recovery of uranium from alternate feed materials, with some variations depending on the particular
alternate feed material.
The Mill processed 1,511,544 tons of conventional ore and other materials from May 6, 1980 to February 4, 1983. During the second operational period from October 1, 1985 through December 7, 1987, 1,023,393
tons of conventional ore were processed. During the third operational period from July 1988 through
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November 1990, 1,015,032 tons of conventional ore were processed. During the fourth operational period
from August 1995 through January 1996, 203,317 tons of conventional ore were processed. In the fifth operational period, from May 1996 through September 1996, the Mill processed 3,868 tons of calcium
fluoride alternate feed material. From 1997 to early 1999, the Mill processed 58,403 tons from several
additional alternate feed stocks.
With rising uranium prices in the late 1990s, company mines were reopened in 1997, and 87,250 tons of
conventional ore were processed in 1999 and early 2000. In 2002 and 2003, the Mill processed 266,690
tons of alternate feed material from government cleanup projects. An additional 40,866 tons of alternate feed materials were processed in 2007. An additional 1,401 tons of alternate feed materials were processed
from 2008 through July 2011. From April 2008 through July 2011 the Mill processed an additional 722,843
tons of conventional ore. The Mill processed 340,058 and 24,036 tons of conventional ore and alternate feed materials, respectively, between August 2011 and March 2016.
Inception to date material processed through March 2016 totals 5,298,701 tons. This total is for all processing periods and feeds combined.
2.2.3 Tailings Management Facilities
Tailings produced by the Mill from conventional ores typically contain 30 percent moisture by weight, have an in-place dry density of 86.3 pounds per cubic foot (calculated from Cell 2 volume and tons placed), have
a size distribution with a significant -200 to -325 mesh size fraction, and have a high acid and flocculent
content. Tailings from alternate feed materials that are similar physically to conventional ores, which comprise most of the tons of alternate feed materials processed to date at the Mill, are similar to the tailings
for conventional ores. Tailings from some of the higher grade, lower volume alternate feed materials may
vary somewhat from the tailings from conventional ores, primarily in moisture and density content.
The tailings facilities at the Mill currently consist of five cells as follows:
• Cell 1, constructed with a 30 mil PVC earthen-covered liner, is used for the evaporation of process solutions (Cell 1 was previously referred to as Cell 1-I).
• Cell 2, constructed with a 30 mil PVC earthen-covered liner, is used for the storage of barren
tailings sands. This Cell is full and has been partially reclaimed.
• Cell 3, constructed with a 30 mil PVC earthen-covered liner, is used for the storage of barren
tailings sands and process solutions, but currently only receives mill waste and byproduct material in accordance with License provisions. This cell is partially filled and has been partially reclaimed.
• Cell 4A, constructed with a geosynthetic clay liner, a 60 mil HDPE liner, a 300 mil HDPE geonet drainage layer, a second 60 mil HDPE liner, and a slimes drain network over the entire cell bottom.
This cell was placed into service in October 2008 and is used for storage of barren tailings sands
and evaporation of process solutions.
• Cell 4B, constructed with a geosynthetic clay liner, a 60 mil HDPE liner, a 300 mil HDPE geonet
drainage layer, a second 60 mil HDPE liner, and a slimes drain network over the entire cell bottom. This cell was placed into service in February 2011, is used for evaporation of process solutions,
and has not been used for tailings storage.
Total estimated design capacity of Cells 2, 3, 4A, and 4B is approximately eight million tons. Figures 1.5-4 and 1.5-5 show the locations of the tailings management system cells.
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2.2.3.1 Tailings Management
Constructed in shallow valleys or swale areas, the lined tailings facilities provide storage below the existing
grade and reduce potential exposure. Because the cells are separate and distinct, individual tailings cells may be reclaimed as they are filled to capacity. This phased reclamation approach minimizes the amount
of tailings exposed at any given time and reduces potential exposure to a minimum.
Slurry disposal has taken place in Cells 2, 3 and 4A. Tailings placement in Cell 2 and Cell 3 was accomplished by means of the final grade method, described below.
The final grade method used in Cell 2 and Cell 3 calls for the slurry to be discharged until the tailings
surface comes up to near final grade. The discharge points are set up in the east end of the cell, and the final grade surface is advanced to the slimes pool area. Coarse tailings sand from the discharge points is
graded into low areas to reach the final disposal elevation. When the slimes pool is reached, the discharge
points are then moved to the west end of the cell and worked back to the middle. An advantage to using the final grade method is that maximum beach stability is achieved by (1) allowing water to drain from the
sands to the maximum extent, and (2) allowing coarse sand deposition to help provide stable beaches. Another advantage is that radon release and dust prevention measures (through the placement of the initial layer of the final cover) are applied as expeditiously as possible.
Slurry disposal in Cell 4A is from several pre-determined discharge points located around the north and east sides of the cell. Slurry discharge is only allowed on skid pads, or protective HDPE sheets, to prevent damage to the synthetic lining system. Once tailings solids have reach the maximum elevation around the
perimeter of the cell, discharge points can be moved toward the interior of the cell. Slurry disposal in Cell 4B will be conducted in the same manner as Cell 4A. Cell 4B is currently only accepting process solutions.
2.2.3.2 Liquid Management
As a zero-discharge facility, the Mill must evaporate all of the liquids utilized during processing. This
evaporation currently takes place in four areas:
• Cell 1, which is used for solutions only
• Cell 3, in which tailings and solutions exist
• Cell 4A, in which tailings and solutions exist
• Cell 4B, presently used for solutions only
The original engineering design indicated a net water gain into the cells would occur during Mill operations.
As anticipated, this has been proven to be the case. In addition to natural evaporation, spray systems have been used at various times to enhance evaporative rates and for dust control. To minimize the net water
gain, solutions are recycled back for use in the Mill circuit from the active tailings cells to the maximum
extent possible. Solutions from Cells 1, 3, 4A, and 4B are brought back to the CCD circuit where metallurgical benefit can be realized. Recycle to other parts of the Mill circuit are not feasible due to the
acidic condition of the solution.
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2.3 Monitoring Programs
2.3.1 Monitoring and Reporting Under the Mill’s GWDP
2.3.1.1 Groundwater Monitoring
a) Plugged and Excluded Wells
Wells MW-6, MW-7, and MW-8 were plugged because they were in the area of Cell 3, as was MW-13, in
the Cell 4A area. Wells MW-9 and MW-10 are dry and have been excluded from the monitoring program. MW-16 is dry and has been plugged as part of the tailings Cell 4B construction.
b) Groundwater Monitoring at the Mill Prior to Issuance of the GWDP
At the time of renewal of the License by NRC in March 1997 and up until issuance of the GWDP in March 2005, the Mill implemented a groundwater detection monitoring program to ensure compliance to 10 CFR
Part 40, Appendix A, in accordance with the provisions of the License. The detection monitoring program
was in accordance with the report entitled, Points of Compliance, White Mesa Uranium Mill, prepared by Titan Environmental Corporation, submitted by letter to the NRC dated October 5, 1994 (Titan, 1994b).
Under that program, the Mill sampled monitoring wells MW-5, MW-11, MW-12, MW-14, MW-15 and MW-17, on a quarterly basis. Samples were analyzed for chloride, potassium, nickel and uranium, and the
results of such sampling were included in the Mill’s Semi-Annual Effluent Monitoring Reports that were
filed with the NRC up until August 2004 and with the DWMRC subsequent thereto.
Between 1979 and 1997, the Mill monitored up to 20 constituents in up to 13 wells. That program was
changed to the Points of Compliance Program in 1997 because NRC had concluded that:
• The Mill and tailings system had produced no impacts to the perched zone or deep aquifer
• The most dependable indicators of water quality and potential cell failure were considered to be
chloride, nickel, potassium and natural uranium
c) Issuance of the GWDP
On March 8, 2005, the DWMRC issued the GWDP, which includes a groundwater monitoring program
that supersedes and replaces the groundwater monitoring requirements set out in the License. Groundwater monitoring under the GWDP commenced in March 2005, the results of which are included in the Mill’s
Quarterly Groundwater Monitoring Reports that are submitted to the DWMRC.
d) Current Ground Water Monitoring Program at the Mill Under the GWDP
The current groundwater monitoring program at the Mill under the GWDP consists of monitoring at 25
point of compliance monitoring wells: MW-1, MW-2, MW-3, MW-3A, MW-5, MW-11, MW-12, MW-14, MW-15, MW-17, MW-18, MW-19, MW-23, MW-24, MW-25, MW-26, MW-27, MW-28, MW-29,
MW-30, MW-31, MW-32 MW-35, MW-36, and MW-37. The locations of these wells are indicated on
Figure 2.3-1.

HYDRO
GEO
CHEM, INC.
APPROVED DATE REFERENCE FIGURE
1 mile
Mill Site
CORRAL CANYON
CORRAL SPRINGS
COTTONWOOD
ENTRANCE SPRING
RUIN SPRING
WESTWATER
Cell 1
Cell 2
Cell 3
Cell 4A
Cell 4B
MW-01
MW-02
MW-03
MW-11
MW-14MW-15
MW-17
MW-18
MW-19
MW-20
MW-21
MW-22
MW-23
MW-24
MW-25
MW-26
MW-27
MW-28
MW-29
MW-30
MW-31
MW-32
MW-33
MW-34MW-37
TW4-01
TW4-10
TW4-34
TWN-01
TWN-02
TWN-03
TWN-04
TWN-05
TWN-06
TWN-07
TWN-08
TWN-09
TWN-10
TWN-11 TWN-12
TWN-13
TWN-14
TWN-15
TWN-16
TWN-17
TWN-18
TWN-19
PIEZ-01
PIEZ-02
PIEZ-03
PIEZ-04
PIEZ-05
TW4-03
TW4-05
TW4-09
TW4-12
TW4-13
TW4-14
TW4-18
TW4-31
TW4-32
MW-12
TW4-11TW4-16
TW4-19
TW4-27
MW-35
MW-36
TW4-04
TW4-07
TW4-21
TW4-24
TW4-25
TW4-26
TW4-02
TW4-08
MW-04
MW-05
TW4-06
TW4-22
TW4-23
TW4-20
TW4-28
TW4-29
TW4-30TW4-33
TW4-35
TW4-36
DR-05 DR-06 DR-07
DR-08
DR-09
DR-10 DR-11 DR-12 DR-13
DR-14 DR-15
DR-17
DR-19 DR-20 DR-21
DR-22
DR-23
DR-24
TW4-37
abandoned abandoned
abandoned
abandoned
abandoned abandoned
abandoned
abandoned abandoned
wildlife pond
wildlife pond
wildlife pond
EXPLANATION
perched monitoring well
perched piezometer
seep or spring
WHITE MESA SITE PLAN SHOWING LOCATIONS OF
PERCHED WELLS AND PIEZOMETERS
H:/718000/
ReclamationPlan/Uwelloc0316_Rec.srf
MW-5
PIEZ-1
RUIN SPRING
temporary perched monitoring well
temporary perched nitrate monitoring
well
TW4-12
TWN-7
TW4-19 perched chloroform or
nitrate pumping well
2.3-1
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Part I.E.1.(c) of the GWDP requires that each point of compliance well must be sampled for the constituents
listed in Table 2.3-1.
Table 2.3-1 Groundwater Monitoring Constituents Listed in Table 2 of the GWDP
Nutrients: Ammonia (as N) Nitrate & Nitrite (as N)

Heavy Metals: Arsenic
Beryllium
Cadmium Chromium
Cobalt Copper Iron
Lead
Manganese
Mercury Molybdenum
Nickel Selenium Silver
Thallium
Tin
Uranium Vanadium
Zinc

Radiologics:
Gross Alpha
Volatile Organic Compounds:
Acetone Benzene
2-Butanone (MEK)
Carbon Tetrachloride
Chloroform Chloromethane
Dichloromethane
Naphthalene
Tetrahydrofuran Toluene
Xylenes (total)

Others:
Field pH (S.U.) Fluoride Chloride Sulfate TDS

Further, Part I.E.1.(d) of the GWDP requires that, in addition to pH, the following field parameters must
also be monitored:
• Depth to groundwater
• Temperature
• Specific conductance
• Redox potential
and that, in addition to chloride and sulfate, the following general organics must also be monitored:
• Carbonate, bicarbonate, sodium, potassium, magnesium, calcium, and total anions and cations
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Sample frequency depends on the speed of ground water flow in the vicinity of each well. Parts I.E.1(b)
and (c) of the GWDP provide that quarterly monitoring is required for all wells where local groundwater average linear velocity has been found by the DWMRC to be equal to or greater than 10 feet/year, and
semi-annual monitoring is required where the local groundwater average linear velocity has been found by
the DWMRC to be less than 10 feet/year.
Based on these criteria, MW-11, MW-14, MW-25, MW-26, MW-30, MW-31, MW-35, MW-36 and MW-
37 are monitored quarterly. Semi-annual monitoring is required at MW-1, MW-2, MW-3, MW-3A, MW-
5, MW-12, MW-15, MW-17, MW-18, MW-19, MW-23, MW-24, MW-27, MW-28, MW-29 and MW-32.
In addition MW-20 and MW-22, which have been classified as general monitoring wells are sampled semi-
annually.
2.3.1.2 Deep Aquifer
The culinary well (one of the supply wells) is completed in the Navajo aquifer, at a depth of approximately 1,800 feet below the ground surface. Due to the fact that the deep confined aquifer at the site is hydraulically
isolated from the shallow perched aquifer (see the discussion in Sections 1.5.1.1 and 1.5.1.2) no monitoring of the deep aquifer is required under the GWDP.
2.3.1.3 Seeps and Springs
Pursuant to Part I.E.6 of the GWDP, EFRI has a Sampling Plan for Seeps and Springs in the Vicinity of the
White Mesa Uranium Mill, Revision: 0, March 17, 2009 (EFRI, 2009, the “SSSP”) (and as modified on June 10, 2011, Revision 1 – submitted to UDEQ for review) that requires the Mill to perform groundwater
sampling and analysis of all seeps and springs found downgradient or lateral gradient from the tailings
management cells.
Under the SSSP, seeps and springs sampling is conducted on an annual basis between May 1 and July 15
of each year, to the extent sufficient water is available for sampling, at five identified seeps and springs
near the Mill. The sampling locations were selected to correspond with those seeps and springs sampled for the initial Mill site characterization performed in the 1978 ER, plus additional sites located by EFRI,
the BLM and Ute Mountain Ute Indian Tribe representatives.
Samples are analyzed for all groundwater monitoring parameters found in Table 2.3-1 and the general inorganic constituents specified for groundwater monitoring in Part I.E.1 (d). The laboratory procedures
used to complete the analyses are those utilized for groundwater sampling. In addition to these laboratory
parameters, the pH, temperature, redox potential, and conductivity of each sample will be measured and recorded in the field. Laboratories selected by EFRI to perform analyses of seeps and springs samples will
be required to be certified by the State of Utah in accordance with UAC R317-6-6.12.A.
The seeps and springs sampling events are subject to the current Mill’s QAP, unless otherwise specifically
modified by the SSSP to meet the specific needs of this type of sampling.

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2.3.1.4 Discharge Minimization Technology and Best Available Technology Standards and Monitoring
a) General
Part I.D. of the GWDP sets out a number of Discharge Minimization Technology (“DMT”) and Best Available Technology (“BAT”) standards that must be followed. Part I.E. of the GWDP sets out the
Groundwater Compliance and Technology Performance Monitoring requirements, to ensure that the DMT
and BAT standards are met. These provisions of the GWDP, along with the White Mesa Mill Discharge Minimization Technology (DMT) Monitoring Plan, 4/15 Revision: 12.3 (the “DMT Plan”) (EFRI, 2015a),
the White Mesa Mill Tailings Management System (EFRI, 2015b), the Cell 4A and 4B BAT Monitoring,
Operations and Maintenance Plan and other plans and programs developed pursuant to such Parts of the GWDP, set out the methods and procedures for inspections of the facility operations and for detecting
failure of the system.
In addition to the programs discussed above, the following additional DMT and BAT performance standards and associated monitoring are required under Parts I.D and I.E. of the GWDP.
b) Tailings Cell Operation
Part I.D.2 of the GWDP provides that authorized operation and maximum disposal capacity in each of the
existing tailings cells shall not exceed the levels authorized by the License and that under no circumstances
shall the freeboard be less than three feet, as measured from the top of the flexible membrane liner (“FML”). Part I.E.7(a) of the GWDP requires that the wastewater pool elevations in Cells 1 and 3 must be monitored
weekly to ensure compliance with the maximum wastewater elevation criteria mandated by Condition 10.3
of the License. Parts I.E.8 (a)(4) and I.E.12.(a)(4) provide that authorized operation and maximum disposal capacity in Cells 4A and 4B shall not exceed the levels authorized GWDP ( as noted in the DMT Plan) and
that under no circumstances shall the freeboard be less than three feet, as measured from the top of the
FML. The requirements to meet freeboard elevation limits in Cell 3 and Cell 4A were eliminated upon approval to use Cell 4B. The solution elevation measurements in Cell 4A are not required for compliance
with freeboard limits but are required for the calculation of the daily allowable volume of fluids pumped
from Cell 4A LDS and are collected for this purpose.
Part I.D.2 further provides that any modifications by EFRI to any approved engineering design parameter
at these existing tailings cells requires prior Directorapproval, modification of the GWDP and issuance of
a construction permit.
c) Slimes Drain Monitoring
Part I.D.3(b)(1) of the GWDP requires that EFRI must at all times maintain the average wastewater head in the slimes drain access pipe to be as low as reasonably achievable (ALARA) in each tailings disposal cell, in accordance with the approved DMT Plan. Compliance will be achieved when the average annual
wastewater recovery elevation in the slimes drain access pipe, determined pursuant to the currently approved DMT Plan meets the conditions in Equation 1 specified in Part I.D.3(b)(1) of the GWDP.
Part I.E.7(b) of the GWDP requires that EFRI must monitor and record quarterly the depth to wastewater
in the slimes drain access pipes as described in the currently approved DMT Plan at Cell 2, and upon commencement of de-watering activities, at Cell 3, in order to ensure compliance with Part I.D.3(b)(1) of
the GWDP.
Page 2-10 Revision 5.1B
Energy Fuels Resources (USA) Inc. White Mesa Mill Reclamation Plan
d) Maximum Tailings Waste Solids Elevation
Part I.D.3(c) of the GWDP requires that upon closure of any tailings cell, EFRI must ensure that the maximum elevation of the tailings waste solids does not exceed the top of the FML.
e) Wastewater Elevation in Roberts Pond
Roberts Pond has been permanently removed from service. Excavation activities have been completed and pursuant to DWMRC correspondence dated March 5, 2015, routine monitoring is no longer necessary.
f) Inspection of Feedstock Storage Area
Part I.D.3(f) of the GWDP requires that open-air or bulk storage of all feedstock materials at the Mill facility awaiting Mill processing must be limited to the eastern portion of the Mill site (the “ore pad”) described by
the coordinates set out in that Part of the GWDP, and that storage of feedstock materials at the facility
outside of this defined area, must meet the requirements of Part I.D.11 of the GWDP. Part I.D.11 requires that EFRI must store and manage feedstock materials outside the defined ore storage pad in accordance
with the following minimum performance requirements:
(i) Feedstock materials will be stored at all times in water-tight containers, and
(ii) Aisle ways will be provided at all times to allow visual inspection of each and every
feedstock container, or
(iii) Each and every feedstock container will be placed inside a water-tight overpack prior to
storage, or
(iv) Feedstock containers shall be stored on a hardened surface to prevent spillage onto subsurface soils, and that conforms with the following minimum physical requirements:
A. A storage area composed of a hardened engineered surface of asphalt or concrete,
and
B. A storage area designed, constructed, and operated in accordance with engineering
plans and specifications approved in advance by the Director. All such engineering
plans or specifications submitted shall demonstrate compliance with Part I.D.4 of the GWDP, and
C. A storage area that provides containment berms to control stormwater run-on and
run-off, and
D. Stormwater drainage works approved in advance by the Director, or
E. Other storage facilities and means approved in advance by the Director.
Part I.E.7(d) of the GWDP requires that EFRI conduct weekly inspections of all feedstock storage areas to:
Page 2-11 Revision 5.1B
Energy Fuels Resources (USA) Inc. White Mesa Mill Reclamation Plan
(i) Confirm that the bulk feedstock materials are maintained within the approved feedstock
storage area specified by Part I.D.3(f) of the GWDP; and
(ii) Verify that all alternate feedstock materials located outside the approved feedstock storage
area are stored in accordance with the requirements found in Part I.D.11 of the GWDP.
Part I.E.7(e) further provides that EFRI must conduct weekly inspections to verify that each feed material container complies with the requirements of Part I.D.11 of the GWDP.
The Mill’s procedures for weekly inspection of the ore pad is contained in Section 3.2 of the DMT Plan.
g) Monitor and Maintain Inventory of Chemicals
Part I.D.3(g) of the GWDP requires that for all chemical reagents stored at existing storage facilities and
held for use in the milling process, EFRI must provide secondary containment to capture and contain all
volumes of reagent(s) that might be released at any individual storage area. Response to spills, cleanup thereof, and required reporting must comply with the provisions of the Mill’s Emergency Response Plan,
as stipulated by Part I.D.10 of the GWDP. Part I.D.3(g) further provides that for any new construction of
reagent storage facilities, such secondary containment and control must prevent any contact of the spilled or otherwise released reagent or product with the ground surface.
Part I.E.9 of the GWDP requires that EFRI must monitor and maintain a current inventory of all chemicals used at the facility at rates equal to or greater than 100 kg/yr. This inventory must be maintained on-site,
and must include:
(iii) Identification of chemicals used in the milling process and the on-site laboratory; and
(iv) Determination of volume and mass of each raw chemical currently held in storage at the
facility.
2.3.1.5 BAT Performance Standards for Cell 4A
a) BAT Operations and Maintenance Plan
Part I.D.6 and I.D.13 of the GWDP provides that EFRI must operate and maintain Cell 4A and Cell 4B
respectively so as to prevent release of wastewater to groundwater and the environment in accordance with
the Mill’s Cell 4A BAT Monitoring, Operations and Maintenance Plan. The Mill’s Cell 4A and 4B BAT Monitoring, Operations and Maintenance Plan, 07/11 Revision: EFRI 2.3 includes the following
performance standards:
(i) The fluid head in the leak detection system shall not exceed 1 foot above the lowest point in the lower membrane liner
(ii) The leak detection system maximum allowable daily leak rate shall not exceed 24,160
gallons/day for Cell 4A and 26,145 gallons/day for Cell 4B
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Energy Fuels Resources (USA) Inc. White Mesa Mill Reclamation Plan
(iii) After EFRI initiates pumping conditions in the slimes drain layer in Cell 4A or Cell 4B,
EFRI will provide continuous declining fluid heads in the slimes drain layer, in a manner equivalent to the requirements found in Part I.D.3(b) for Cells 2 and 3
(iv) Under no circumstances shall the freeboard be less than 3-feet in Cell 4B, as measured
from the top of the FML
b) Implementation of Monitoring Requirements Under the BAT Operations and Maintenance Plan
The Cell 4A and 4B BAT Monitoring, Operations and Maintenance Plan also requires EFRI to perform the
following monitoring and recordkeeping requirements:
(i) Weekly Leak Detection System (LDS) Monitoring - including:
A. EFRI must provide continuous operation of the leak detection system pumping and
monitoring equipment, including, but not limited to, the submersible pump, pump controller, head monitoring, and flow meter equipment approved by the Director.
Failure of any pumping or monitoring equipment not repaired and made fully operational within 24-hours of discovery shall constitute failure of BAT and a violation of the GWDP.
B. EFRI must measure the fluid head above the lowest point on the secondary FML by the use of procedures and equipment approved by the Director. Under no
circumstance shall fluid head in the leak detection system sump exceed a 1-foot
level above the lowest point in the lower FML, not including the sump.
C. EFRI must measure the volume of all fluids pumped from the leak detection
system. Under no circumstances shall the average daily leak detection system flow
volume exceed 24,160 gallons/day for Cell 4A or 26,145 for Cell 4B.
D. EFRI must operate and maintain wastewater levels to provide a 3-foot minimum
of vertical freeboard in tailings Cell 4B. Such measurement must be made to the
nearest 0.1 foot.
(ii) Slimes Drain Recovery Head Monitoring
Immediately after the Mill initiates pumping conditions in the Cell 4A or Cell 4B slimes drain system,
quarterly recovery head tests and fluid level measurements will be made in accordance with the requirements of Parts I.D.3(b) and I.E.7(b) of the GWDP and any plan approved by the Director.
2.3.1.6 Stormwater Management and Spill Control Requirements
Part I.D.10 of the GWDP requires that EFRI will manage all contact and non-contact stormwater and control contaminant spills at the facility in accordance with the Mill’s stormwater best management practices plan. The Mill’s Stormwater Best Management Practices Plan, Revision 1.5 (EFRI, 2016) includes the following
provisions:
Page 2-13 Revision 5.1B
Energy Fuels Resources (USA) Inc. White Mesa Mill Reclamation Plan
a) Protect groundwater quality or other waters of the state by design, construction, and/or active
operational measures that meet the requirements of the Ground Water Quality Protection Regulations found in UAC R317-6-6.3(G) and R317-6-6.4(C)
b) Prevent, control and contain spills of stored reagents or other chemicals at the Mill site
c) Cleanup spills of stored reagents or other chemicals at the Mill site immediately upon discovery
d) Report reagent spills or other releases at the Mill site to the Director in accordance with UAC 19-
5-114
2.3.1.7 Tailings and Slimes Drain Sampling
Part I.E.10 of the GWDP requires that, on an annual basis, EFRI must collect wastewater quality samples from each wastewater source at each tailings cell at the facility, including surface impounded wastewaters,
and slimes drain wastewaters, pursuant to the Mill’s Sampling and Analysis Plan for Tailings Cells, Leak Detections Systems and Slimes Drains, Revision 2.1, July 2012 (the “Tailings Management System SAP”). All such sampling must be conducted in August of each year.
The purpose of the Tailings Management System SAP is to characterize the source term quality of all Mill tailings system wastewaters, including impounded wastewaters or process waters in the Mill tailings
system, and wastewater or leachates collected by internal slimes drains. The Tailings Management System
SAP requires:
• Collection of samples of the liquid from the tailings management system cells and the slimes drain
of each cell that has commenced de-watering activities.
• Samples of liquid and slimes drain material will be analyzed at an offsite contract laboratory and
subjected to the analytical parameters included in Table 2 of the GWDP (see Table 2.3-1) and
general inorganics listed in Part I.E.1(d)(2)(ii) of the GWDP, as well as semi-volatile organic compounds.
• A detailed description of all sampling methods and sample preservation techniques to be employed.
• The procedures used to analyze these samples will be standard analytical methods used for
groundwater sampling as specified in the Mill’s QAP.
• The contracted laboratory will be certified by the State of Utah in accordance with UAC R317-6-
6.12A.
• 30-day advance notice of each annual sampling event must be given, to allow the DWMRC to
collect split samples of all sources.
The tailings management and slimes drain sampling events are subject to the Mill’s QAP, unless otherwise specifically modified by the Tailings Management System SAP to meet the specific needs of this type of
sampling.
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Energy Fuels Resources (USA) Inc. White Mesa Mill Reclamation Plan
2.3.2 Monitoring and Inspections Required Under the License
2.3.2.1 Environmental Monitoring
The environmental monitoring program is designed to assess the effect of Mill process and disposal operations on the unrestricted environment. Delineation of specific equipment and procedures is presented
in the most current version of the Mill’s Environmental Protection Manual.
c) Ambient Air Monitoring
(i) Ambient Particulate
Airborne radionuclide particulate sampling is performed at seven locations, termed BHV-1, BHV-2, BHV-
4, BHV-5, BHV-6, BHV-7, and BHV-8. With the approval of the NRC and effective November 1995, BHV-3 was removed from the active air particulate monitoring program. At that time, the Mill proposed
(and NRC determined) that a sufficient air monitoring database had been compiled at station BHV-3 to
establish a representative airborne particulate radionuclide background for the Mill. BHV-6 was installed by the Mill at the request of the White Mesa Ute Community. This station began operation in July 1999
and provides airborne particulate information in the southerly direction between the Mill and the White Mesa Ute Community. Figure 2.3-2 shows the locations of these air particulate monitoring stations.
The present sampling system consists of high volume particulate samplers utilizing mass flow controllers
to maintain an air flow rate of approximately 32 standard cubic feet per minute. Samplers are operated continuously with a goal for on-stream operating period at ninety percent. Filter replacement is weekly
with quarterly site composite for particulate radionuclide analysis. Analysis is done for U-natural, Th-230,
Ra-226, Pb-210, and Th-232.
See the current Semi-Annual Effluent Monitoring Report for a summary of monitoring results for airborne
particulate.
(ii) Ambient Radon
With the approval of the NRC, Radon-222 monitoring at the BHV stations was discontinued in 1995, due
to the unreliability of monitoring equipment available at that time to detect the new 10 CFR standard of 0.1
pCi/l. From that time until the present, the Mill demonstrated compliance with the requirements of R313-15-301 by calculation authorized by the NRC in September 1995 and as contemplated by R313-15-302 (2)
(a).
This calculation was performed by use of the MILDOS code for estimating environmental radiation doses for uranium recovery operations (Strenge and Bender 1981) in 1991 in support of the Mill’s 1997 license
renewal and more recently in 2007 in support of the 2007 License Renewal Application, by use of the
updated MILDOS AREA code (Yuan et al., 1998). The analysis under both the MILDOS and MILDOS AREA codes assumed the Mill to be processing high grade Arizona Strip ores at full capacity, and
calculated the concentrations of radioactive dust and radon at individual receptor locations around the Mill. Specifically, the modeling under these codes assumed the following conditions:
REVISIONS
Date: By:
Project:
County:
Location:
State:
Author: Date: Drafted By:
Actual Location of BHV-3
is 34,500 Feet Due West
BHV-6
BHV-5
BHV-4
BHV-2
BHV-1BHV-8
BHV-7
Cell 3
Cell 2
Cell 1
Cell 4B Cell 4A
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Coordinate System: NAD1983 StatePlane Utah
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PARTICULATE MONITORING STATIONS
FIGURE 2.3-2
WHITE MESA MILL
San Juan Utah
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Energy Fuels Resources (USA) Inc. White Mesa Mill Reclamation Plan
• 730,000 tons of ore per year
• Average grade of 0.53 percent U3O8
• Yellowcake production of 4,380 tons of U3O8 per year (8.8 million pounds U3O8 per year).
Based on these conditions, the MILDOS and MILDOS AREA codes calculated the combined total effective
dose equivalent from both air particulate and radon at the current nearest residence (approximately 1.2 miles
north of the Mill), i.e., the individual member of the public likely to receive the highest dose from Mill operations, as well as at all other receptor locations, to be below the ALARA goal of 10 mrem/yr for air
particulate alone as set out in R313-15-101(4). Mill operations are constantly monitored to ensure that
operating conditions do not exceed the conditions assumed in the above calculations. If conditions are within those assumed above, radon has been calculated to be within regulatory limits. If conditions exceed
those assumed above, then further evaluation will be performed in order to ensure that doses to the public
continue to be within regulatory limits. Mill operations to date have never exceeded the License conditions assumed above.
In order to determine whether or not detection equipment has improved since 1995, EFRI voluntarily began ambient Radon-222 monitoring at the BHV stations in 2013. Radon-222 monitoring is completed using track etch detectors with an effective reporting limit of 0.06 pCi/L. The Radon-222 data collected from
2013 through present are presented in the Semi-Annual Effluent Monitoring Reports. Amendment 7 of the Mill Radioactive Materials License expanded the Mill’s effluent monitoring programs in 2014. Amendment 7 included expanding the monitoring programs to require the collection of Radon-222 data at
all of the BHV stations.
d) External Radiation
Optically Stimulated Luminescence (“OSL”) badges, as supplied by Landauer, Inc., or equivalent, are
utilized at all of the high volume air monitoring stations to determine ambient external gamma exposures (see Figure 2.3-2). System quality assurances are determined by placing a duplicate monitor at one site
continuously. Exchanges of OSL badges are on a quarterly basis. Measurements obtained from location
BHV-3 have been designated as background due to BHV-3’s remoteness from the Mill site (BHV-3 is located approximately 3.5 miles west of the Mill site). For further procedural information see Section 4.3
of the most recent version of the Mill’s Environmental Protection Manual. See the current Semi-Annual
Effluent Monitoring Report for a summary monitoring results for external radiation.
e) Soil and Vegetation
(i) Soil Monitoring
As mentioned above, specific changes to the individual monitoring programs, including the soil sampling program, has been made as a result of Amendment 7 to the Radioactive Materials License.
Soil samples from the top 2 inches of surface soils are collected annually at each of the 52 locations (see
Figure 2.3-3). and the soil samples are analyzed for U-natural, Ra-226, Pb-210, and Th-232. For further procedural information see Section 4.1 of the most current version of the Mill’s Environmental Protection
Manual. See Section 3.13.1.7.1 of the 2007 ER and the current Semi-Annual Effluent Monitoring Report for a summary of the historic results for soil monitoring. The 2007 ER concludes that the results of sampling
are low, less than the unrestricted release limits.
REVISIONS
Date: By:
Project:
County:
Location:
State:
Author: Date: Drafted By:
Energy Fuels Resources (USA) Inc.
191
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R2
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Actual location of BHV-3is 34,500 feet due west
BHV-8
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Legend
Proposed Soil Monitoring Location
1,000 Feet
2,500 Feet
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Property Boundary
Road
Township and Range
Section
1 IN = 1 MILES
Coordinate System: NAD1983 StatePlane Utah
South FIPS 4303 Feet
FIGURE 2.3-3
SOIL MONITORING LOCATIONS
WHITE MESA MILL
San Juan Utah
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Energy Fuels Resources (USA) Inc. White Mesa Mill Reclamation Plan
(ii) Vegetation Monitoring
Forage vegetation samples are collected three times per year from animal grazing locations to the northeast (near BHV-l (the meteorological station)), northwest (to the immediate west of the site) and southwest (by
BHV-4) of the Mill site. Samples are obtained during the grazing season, in the late fall, early spring, and
in late spring. A minimum of three kilograms of vegetation are submitted from each site for analysis of U-natural, Ra-226, Pb-210, and Th-232. For further procedure information see Section 4.2 of the most current
version of the Mill’s Environmental Protection Manual. See Section 3.13.7(d) of the 2007 ER and the
current Semi-Annual Effluent Monitoring Report for a summary of the historic results for vegetation monitoring. The most recent results indicate no increase in uptake of U-natural, Ra-226 Th-232, and Pb-
210 in vegetation.
d) Meteorological
Meteorological monitoring is performed at a site near BHV-1. The sensor and recording equipment are
capable of monitoring wind velocity and direction, from which the stability classification is calculated. Data integration duration is one-hour with hourly recording of mean speed, mean wind direction, and mean wind stability (as degrees sigma theta).
The data from the meteorological station is retrieved monthly by down loading onto a Campbell Scientific data module, or the equivalent. The data module is sent to an independent meteorological contractor where
the module is downloaded to a computer record, and the data is correlated and presented in a Semi-Annual
Meteorological Report.
Monitoring for precipitation consists of a daily log of precipitation using a standard NOAA rain gauge, or
the equivalent, installed near the administrative office, consistent with NOAA specifications.
Windrose data is summarized in a format compatible with MILDOS and UDAD specifications for 40 CFR 190 compliance. For further procedural information see Section 1.3 of the most current version of the
Mill’s Environmental Protection Manual. A windrose for the site is set out in Figure 1.1-1.
e) Point Emissions
Stack emission monitoring from yellowcake facilities follows EPA Method 5 procedures and occurs on the
following schedule shown in Table 2.3-2.
Page 2-19 Revision 5.1B
Energy Fuels Resources (USA) Inc. White Mesa Mill Reclamation Plan
Table 2.3-2
Stack Sampling Requirements
Frequency Grizzly
Baghouse Stack
North and/or South
Yellowcake Dryer Stacks
Yellowcake
Packaging Baghouse Stack
Vanadium Dryer
Stack
Vanadium
Packaging Stack
Quarterly If operating, U-nat, Th-230, Ra-
226, Pb-210, Th-232, Ra-228,
and Th-228.
If operating, U-nat, Th-230, Ra-
226, Pb-210, Th-232, Ra-228, and
Th-228.
If operating, U-nat, Th-230, Ra-
226, Pb-210, Th-232, Ra-228, and
Th-228.
If operating, U-nat, Th-230, Ra-
226, Pb-210, Th-232, Ra-228, and
Th-228.
If operating, U-nat, Th-230, Ra-
226, Pb-210, Th-232, Ra-228, and
Th-228.

Monitored data includes scrubber system operation levels, process feed levels, particulate emission concentrations, isokinetic conditions, and radionuclide emission concentrations. For further procedure
information see Section 1.4 of the most current version of the Mill’s Environmental Protection Manual. Stack emission data are summarized in the Semi-Annual Effluent Monitoring Report.
f) Surface Water Monitoring
Surface water monitoring is conducted at two locations adjacent to the Mill facility known as Westwater Canyon and Cottonwood Creek. Grab samples are obtained annually from Westwater and quarterly from
Cottonwood. For Westwater Creek, samples of sediments will be collected if a water sample is not
available. Field monitored parameters and laboratory monitored parameters are listed in Table 2.3-3. For further procedural information see Section 2.1 of the most current version of the Mill’s Environmental
Protection Manual. See the current Semi-Annual Effluent Monitoring Report for a summary monitoring
results for surface water.

Page 2-20 Revision 5.1B
Energy Fuels Resources (USA) Inc. White Mesa Mill Reclamation Plan
Table 2.3-3
Operational Phase Surface Water Monitoring Program
Monitoring Sites
Westwater Creek and Cottonwood Creek
Field Requirements
1. temperature C
2. Specific Conductivity umhos at 25 C
3. pH at 25 C
4. redox potential
5. sample date
6. sample ID Code
Vendor Laboratory Requirements
Semiannual* Quarterly

One gallon Unfiltered and Raw One gallon Unfiltered and Raw One gallon Unfiltered, Raw and preserved to pH <2 with HNO3 One gallon Unfiltered, Raw and Preserved to pH <2 with HNO3

Total Dissolved Solids Total Dissolved Solids
Total Suspended Solids Total Suspended Solids
Gross Alpha
Suspended Unat
Dissolved Unat
Suspended Ra-226
Dissolved Ra-226
Suspended Th-230
Dissolved Th-230
*Semiannual sample must be taken a minimum of four months apart. Annual Westwater Creek sample is
analyzed for semi-annual parameters. Radionuclides and LLDs reported in µCi/ml
2.3.2.2 Additional Monitoring and Inspections Required Under the License
Under the License daily, weekly, and monthly inspection reporting and monitoring are required by NRC
Regulatory Guide 8.31, Information Relevant to Ensuring that Occupational Radiation Exposures at Uranium Recovery Facilities will be As Low As is Reasonable Achievable, Revision 1, May 2002 (“Reg
Guide 8.31”), by Section 2.3 of the Mill’s ALARA Program and by the DMT Plan, over and above the
Page 2-21 Revision 5.1B
Energy Fuels Resources (USA) Inc. White Mesa Mill Reclamation Plan
inspections described above that are required under the GWDP. A copy of the Mill’s ALARA Program is
included as Appendix I to the 2007 License Renewal Application.
a) Daily Inspections
Three types of daily inspections are performed at the Mill under the License:
(i) Radiation Staff Inspections
Paragraph 2.3.1 of Reg. Guide 8.31 provides that the Mill’s Radiation Safety Officer (“RSO”) or designated
health physics technician should conduct a daily walk-through (visual) inspection of all work and storage
areas of the Mill to ensure proper implementation of good radiation safety procedures, including good housekeeping that would minimize unnecessary contamination. These inspections are required by Section
2.3.1 of the Mill’s ALARA Program, and are documented and on file in the Mill’s Radiation Protection
Office.
(ii) Operating Foreman Inspections
30 CFR Section 56.18002 of the Mine Safety and Health Administration regulations requires that a competent person designated by the operator must examine each working place at least once each shift for conditions which may adversely affect safety or health. These daily inspections are documented and on
file in the Mill’s Radiation Protection Office.
(iii) Daily Tailings Inspection
Section 2 of the DMT Plan requires that during Mill operation, the Shift Foreman, or other person with the
training specified in Appendix B of the Tailings Management System, designated by the RSO, will perform an inspection of the tailings line and tailings area at least once per shift, paying close attention for potential
leaks and to the discharges from the pipelines. Observations by the Inspector are recorded on the
appropriate line on the Mill’s Daily Inspection Data form.
b) Weekly Inspections
Three types of weekly inspections are performed at the Mill under the License:
(i) Weekly Inspection of the Mill Forms
Paragraph 2.3.1 of Reg. Guide 8.31 provides that the RSO and the Mill foreman should, and Section 2.3.2
of the Mill’s ALARA Program provides that the RSO and Mill foreman, or their respective designees, shall
conduct a weekly inspection of all Mill areas to observe general radiation control practices and review required changes in procedures and equipment. Particular attention is to be focused on areas where potential
exposures to personnel might exist and in areas of operation or locations where contamination is evident.
(ii) Weekly Ore Storage Pad Inspection Forms
Section 3 of the DMT Plan requires that weekly feedstock storage area inspections will be performed by
the Radiation Safety Department, to confirm that the bulk feedstock materials are stored and maintained within the defined area of the ore pad and that all alternate feed materials located outside the defined ore
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pad area are maintained within water tight containers. The results of these inspections are recorded on the
Mill’s Ore Storage/Sample Plant Weekly Inspection Report.
(iii) Weekly Tailings and DMT Inspection
Section 3 of the DMT Plan require that weekly inspections of the tailings area and DMT requirements be
performed by the radiation safety department.
c) Monthly Reports
Two types of monthly reports are prepared by Mill staff:
(i) Monthly Radiation Safety Reports
At least monthly, the RSO reviews the results of daily and weekly inspections, including a review of all
monitoring and exposure data for the month and provides to the Mill Manager a monthly report containing
a written summary of the month’s significant worker protection activities (Section 2.3.4 of the Mill’s ALARA Program).
(ii) Monthly Tailings Inspection Reports
The Tailings Management System Plan requires that a Monthly Inspection Data form be completed for the monthly tailings inspection. This inspection is typically performed in the fourth week of each month and
is in lieu of the weekly tailings inspection for that week.
Mill staff also prepares a monthly summary of all daily, weekly, monthly and quarterly tailings inspections.
d) Quarterly Tailings Inspections
The Tailings Management System Plan requires that the RSO or his designee perform a quarterly tailings inspection.
e) Annual Evaluations
The following annual evaluations are performed under the License, as set out in Section 6 of the Tailings Management System Plan.
(i) Annual Technical Evaluation
An annual technical evaluation of the tailings management system must be performed by a registered professional engineer (PE), who has experience and training in the area of geotechnical aspects of retention
structures. The technical evaluation includes an on-site inspection of the tailings management system and
a thorough review of all tailings records for the past year. The Technical Evaluation also includes a review and summary of the annual movement monitor survey (see paragraph (ii) below).
All tailings management system components and corresponding dikes are inspected for signs of erosion,
subsidence, shrinkage, and seepage. The drainage ditches are inspected to evaluate surface water control structures.
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In the event tailings capacity evaluations were performed for the receipt of alternate feed material during
the year, the capacity evaluation forms and associated calculation sheets will be reviewed to ensure that the maximum tailings capacity estimate is accurate. The amount of tailings added to the system since the last
evaluation will also be calculated to determine the estimated capacity at the time of the evaluation.
As discussed above, tailings inspection records consist of daily, weekly, monthly, and quarterly tailings inspections. These inspection records are evaluated to determine if any freeboard limits are being
approached. Records will also be reviewed to summarize observations of potential concern. The evaluation
also involves discussion with the Environmental and/or Radiation Technician and the RSO regarding activities around the tailings area for the past year. During the annual inspection, photographs of the tailings
area are taken. The training of individuals is also reviewed as a part of the Annual Technical Evaluation.
The registered engineer obtains copies of selected tailings inspections, along with the monthly and quarterly summaries of observations of concern and the corrective actions taken. These copies are then included in
the Annual Technical Evaluation Report.
The Annual Technical Evaluation Report must be submitted by November 15th of every year to the Director and to the Directing Dam Safety Engineer, State of Utah, Natural Resources.
(ii) Annual Movement Monitor Survey
A movement monitor survey is conducted by a licensed surveyor semi-annually for the first three years,
and annually thereafter during the second quarter of each year. The movement monitor survey consists of
surveying monitors along dikes 4A-W, 4A-S and 4B-S to detect any possible settlement or movement of the dikes. The data generated from this survey is reviewed and incorporated into the Annual Technical
Evaluation Report of the tailings management system.
(iii) Annual Leak Detection Fluid Samples
In the event solution has been detected in a leak detection system in Cells 1, 2 or 3, a sample will be
collected on an annual basis. This sample will be analyzed according to the conditions set forth in License
Condition 11.3.C. The results of the analysis will be reviewed to determine the origin of the solution.

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3 TAILINGS RECLAMATION PLAN

This section provides an overview of the Mill location and property; details the facilities to be reclaimed;
and describes the design criteria applied in this Plan. Drawings are presented as an attachment to this report.
Technical specifications are presented in Attachment A. Attachment B presents the quality assurance and quality control plan for construction activities. Attachment C presents cost estimates for reclamation (based
on the Existing Cover Design). Attachment D presents the most current Radiation Protection Manual for
Reclamation Activities. Attachment E provides documents on the approved Existing Cover Design that was presented in Reclamation Plan Revision 3.2b (Denison, 2011b).
The Reclamation Plan is written assuming the tailings management system Cells 2, 3, 4A, and 4B will receive tailings to the maximum permitted tailings elevations. Cell 4B is used for evaporation of process solutions and has not been used for tailings storage. The Plan has been written assuming Cell 4B will be
used in the future for tailings storage.
If Cell 4B is not used in the future for tailings storage, Cell 4B can be reclaimed for clean closure. Any
remaining solutions would be pumped to the last active tailings Cell. The liner system would be removed
and disposed in the last active tailings cell. The exterior embankments would then be regraded. This design is not presented in this report.
3.1 Location and Property Description
The Mill is located approximately six miles south of Blanding, Utah on US Highway 191 on a parcel of land encompassing all or part of Sections 21, 22, 27, 28, 29, 32, and 33 of T37S, R22E, and Sections 4, 5,
6, 8, 9, and 16 of T38S, R22E, Salt Lake Base and Meridian described as follows (Figure 3.1-1):
The south half of the south half of Section 21; the southeast quarter of the southeast quarter of Section 22; the northwest quarter of the northwest quarter and lots 1 and 4 of Section 27
all that part of the southwest quarter of the northwest quarter and the northwest quarter
southwest quarter of Section 27 lying west of Utah State Highway 163; the northeast quarter of the northwest quarter, the south half of the northwest quarter, the northeast
quarter and the south half of Section 28; the southeast quarter of the southeast quarter of
Section 29; the east half of Section 32 and all of Section 33, Township 37 South, Range 22 East, Salt Lake Base and Meridian. Lots 1 through 4, inclusive, the south half of the north
half, the southwest quarter, the west half of the southeast quarter, the west half of the east half of the southeast quarter and the west half of the east half of the east half of the southeast
quarter of Section 4; Lots 1 through 4, inclusive, the south half of the north half and the
south half of Section 5 (all); Lots 1 and 2, the south half of
EFRI
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the northeast quarter and the south half of Section 6 (E1/2); the northeast quarter of Section 8; all of Section 9 and all of Section 16, Township 38 South, Range 22 East, Salt Lake Base
and Meridian. Additional land is controlled by 46 Mill site claims. Total land holdings
are approximately 5,415 acres.
3.2 Facilities to be Reclaimed
See the Drawings for a general layout of the Mill yard and related facilities and the restricted area boundary.
3.2.1 Summary of Facilities to be Reclaimed
The facilities to be reclaimed include the following:
• Cell 1 (evaporation). Cell 1 was previously referred to as Cell 1-I.
• Cells 2, 3, and 4A (tailings).
• Cell 4B (This cell is currently used for evaporation. The reclamation design assumes this cell will be used for tailings in the future).
• Mill buildings and equipment.
• On-site contaminated areas.
• Off-site contaminated areas (i.e., potential areas affected by windblown tailings).
The reclamation of the above facilities will include the following:
• Placement of contaminated soils, crystals, and synthetic liner material and any contaminated underlying soils from Cell 1 into the last active tailings cell
• Placement of a liner system on a portion of the Cell 1 impoundment area to be used for disposal of contaminated materials and debris from the Mill site, if needed
• Decommissioning Cell 1
• Placement of materials and debris from Mill decommissioning into the last active tailings cell or
Cell 1 Disposal Area
• Placement of an engineered multi-layer cover over the entire area of Cells 2, 3, 4A, 4B, and the
Cell 1 Disposal Area
• Construction of runoff control and diversion channels as necessary
• Reclamation of Mill and ancillary areas
• Reclamation of borrow sources
3.2.2 Tailings and Evaporative Cells
The following subsections describe the cover design and reclamation procedures for Cells 1, 2, 3, 4A, and 4B. Complete engineering details and text are presented in the Updated Tailings Cover Design Report
included as Appendix A to this Reclamation Plan.
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Cell 2 final cover construction will take place before final cover construction on other cells at the White Mesa Mill. Cell 2 final cover construction will occur in two phases and includes a performance monitoring
test section (Primary Test Section) containing a lysimeter constructed in the southeast portion of Cell 2
concurrently with the Phase 1 cover placement. A Supplemental Test Section has been constructed north of the tailings management cells relating to vegetative cover and erosion control. The plan for
implementing final cover placement on Cell 2 and performance assessment and monitoring is presented in
Appendix A. Cell 2 Phase 1 cover placement began in May 2016 and was completed in 2017. The Primary Test Section was constructed in the fall of 2016. The Supplemental Test Section was constructed in the fall
of 2017.
3.2.2.1 Soil Cover Design
A conceptual ET cover design was proposed by EFRI for the White Mesa Mill tailings management cells in the Infiltration and Contaminant Transport Modeling (ICTM) reports (MWH 2007 and 2010) submitted
to the DWMRC to fulfill the White Mesa Mill’s Ground Water Discharge Permit No. UGW370004.
EFRI stated their intent to submit an ET cover design as part of their license renewal in a meeting with
DWMRC on October 5, 2010 after review of the DWMRC Reclamation Plan, Version 4.0 Interrogatories
– Round 1 (DRC, 2010). The proposed conceptual ET cover design was provided to DWMRC on October 7, 2010 and was essentially the same as presented in the 2010 Infiltration and Contaminant Transport Model
report (MWH, 2010). The ET cover proposed and evaluated as described in the Updated Tailings Cover
Design Report (Appendix A) is designed as 9.5 feet thick for Cells 1, 4A, and 4B, 10 feet thick for Cell 3, and 10.5 feet thick for Cell 2. The difference in cover thickensses is based on radon emanation analyses.
The cover system consists of the following materials outlined below by individual layers and thicknesses
from top to bottom:
• Layer 4 - 0.5 ft (15 cm) thick Erosion Protection Layer (gravel-admixture or topsoil)
• Layer 3 - 3.5 ft (107 cm) thick Growth Medium Layer acting as a Water Storage/Biointrusion/Frost
Protection/Secondary Radon Attenuation Layer (loam to sandy clay)
• Layer 2 – 3.0 to 4.0 ft (91 to 122 cm) thick Compacted Cover acting as the Primary Radon Attenuation Layer (highly compacted loam to sandy clay)
• Layer 1 - 2.5 ft (76 cm) thick (minimum) Interim Fill Layer acting as a Secondary Radon Attenuation and Grading Layer (loam to sandy clay)
All the layers combined comprise the monolithic ET cover system. Layer 1 was placed in stages on Cell 2
and the majority of Cell 3 as interim cover. Layer 1 will be placed on the remaining area of Cell 3, all of the Cell 1 Disposal Area, and Cells 4A and 4B. It is assumed that this material was or will be dumped and
minimally compacted by construction equipment to approximately 80 percent of standard Proctor density.
Layer 1 will provide the platform for the remaining cover system and act as a secondary radon attenuation layer. Layer 2 will be compacted cover layer and act as the primary radon attenuation layer. It will be 3 -
4 feet thick (3 feet for Cells 1, 4A, and 4B, 3.5 feet for Cell 3, and 4 feet for Cell 2) and compacted to 95 percent of standard Proctor density. Layer 3 will be the growth medium layer. Layer 3 will also act as a secondary radon attenuation layer and a protection layer for the primary radon attenuation layer (Layer 2).
Layer 3 will be 3.5 feet thick and placed at 85 percent of standard Proctor density to optimize water storage and rooting characteristics for plant growth. Layer 4 will be a 0.5-foot thick erosion protection layer. This
layer will consist of topsoil in areas where the cover is sloped at 0.5 percent and topsoil-gravel admixture
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in areas where the cover is sloped at 1 percent. The topsoil-gravel admixture will consist of topsoil (75 percent) mixed with 1-inch minus gravel (25 percent).
The majority of the cover will be constructed from materials available from within the site boundaries. As
a part of the soil cover, erosion protection will be placed as the top layer of the cover to stabilize slopes and provide long-term erosion resistance (see Appendix A for characterization of cover materials). The erosion
protection materials will be obtained from off-site sources.
The key state and federal performance criteria for tailings cover design and reclamation include:
• Attenuate radon flux to a rate of 20 pCi/m2-s, averaged over each entire cell
• Minimize infiltration into the reclaimed tailings cells
• Maintain a design life of up to 1,000 years and at least 200 years
• Provide long-term isolation of the tailings, including slope stability and geomorphic durability to
withstand erosional forces of wind and runoff (up to the probable maximum precipitation event) as
well as design to accommodate seismic events (up to the peak ground acceleration from the maximum credible earthquake)
• Designs to accommodate minimum reliance on active maintenance
Several models/analyses were utilized in simulating the soil cover effectiveness: radon flux attenuation,
infiltration, freeze/thaw effects, erosion protection, static and pseudostatic slope stability analyses,
biointrusion, tailings dewatering, liquefaction, and settlement. These analyses and results are discussed in detail in Sections 3.3.2 through 3.3.10, and calculations are also shown in the Updated Tailings Cover
Design Report (Appendix A).
The final grading plans are presented in the Drawings. As indicated in the Drawings, the drainage on the top surface of the ET cover at Cells 1, 2, and 3 is designed at a 0.5 percent slope, with portions of Cell 2
top surface at a 1 percent slope and portions of Cells 4A and 4B top surfaces at 0.8 percent slope. The
external side slopes will be graded to five horizontal to one vertical (5H:1V).
3.2.2.2 Cell 1
Cell 1, used during Mill operations solely for evaporation of process liquids, is the northernmost existing
cell and is located immediately west of the Mill. It is also the highest cell in elevation, as the natural topography slopes to the south. The drainage area above and including the cell is 216 acres. This includes
drainage from the Mill site.
Cell 1 will be evaporated to dryness. The synthetic liner and raffinate crystals will then be removed and placed in the tailings cells. Any contaminated soils below the liner will be removed and also placed in the
tailings cells. Based on current regulatory criteria, the current plan calls for excavation of the residual
radioactive materials to be designed to ensure that the concentration of radium-226 in land averaged over any area of 100 square meters does not exceed the background level by more than:
• 5 pCi/g, averaged over the first 15 cm of soil below the surface
• 15 pCi/g, averaged over a 15 cm thick layer of soil more than 15 cm below the surface
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A portion of Cell 1 (i.e., the Cell 1 Disposal Area), adjacent to and running parallel to the downstream cell dike, may be used for permanent disposal of contaminated materials and debris from the Mill site
decommissioning and windblown cleanup. The actual area of the Cell 1 Disposal Area needed for storage
of additional material will depend on the status of Cells 3, 4A, and 4B at the time of final Mill decommissioning. A portion of the Mill area decommissioning material may be placed in Cells 3, 4A or
4B if space is available, but for purposes of the reclamation design the entire quantity of contaminated
materials from the Mill site decommissioning is assumed to be placed in the Cell 1 Disposal Area, which will subsequently be covered with the ET cover. This results in approximately 10 acres of the Cell 1 area
constituting the Cell 1 Disposal Area and being utilized for permanent tailings storage. The remaining area of Cell 1 will then be breached and converted to a sedimentation basin. All runoff from the covered Cell 1 Disposal Area, the Mill area and the area immediately north of Cell 1 will be routed into the sedimentation
basin and will discharge onto the natural ground via the channel located at the southwest corner of the basin. The channel is designed to accommodate the PMF flood. Hydraulic and erosional analyses are provided in Appendix A. The channel will be a bedrock channel with a 0.1 percent channel slope, 150-foot bottom
width, and 3 horizontal: 1 vertical sideslopes.
3.2.2.3 Cell 2
Cell 2 has been filled with tailings and will be covered with the ET cover to a minimum cover thickness of
10.5 feet. The final cover will drain at a slope of 0.5 to 1 percent to the north and south as shown in the
Drawings.
The cover will be as described in Section 3.2.2.1 above and will consist of a 2.5 feet of interim fill, followed
by 4 feet of compacted cover, overlain by 3.5 feet of growth medium. Half a foot of topsoil or gravel-
admixture will be utilized as armor against erosion at the surface of the cover. External side slopes will be graded to a 5:1 slope and will have 6 inches of angular riprap on the cover surface for erosion protection.
A rock apron with dimensions as shown in the Drawings will be constructed at the transition areas of the
toes of the side slopes of Cell 2.
3.2.2.4 Cell 3
Cell 3 will be filled with tailings, debris and contaminated soils and covered with the same ET cover system
and erosion protection as Cell 2, except the total thickness will be 10 feet with a compacted cover layer of
3.5 feet.
3.2.2.5 Cells 4A and 4B
Cells 4A and 4B are designed to be filled with tailings, debris and contaminated soils and will be covered
with the same ET cover system as Cell 2 and Cell 3, except the total thickness will be 9.5 feet with a compacted cover layer of 3 feet. The south external side slopes will be graded to 5H:1V and will have 8
inches of angular riprap on the cover surface for erosion protection. A rock apron with dimensions as
shown on the drawings will be constructed at the south side slopes of Cells 4A and 4B. The east and west external side slopes will be graded to 5H:1V and have the same erosion protection as the east and west sides
slopes of Cells 2 and 3.
3.3 Design Criteria
As required by Part I.H.11 of the GWDP, EFRI has completed an infiltration and contaminant transport
model of the final tailings cover system to demonstrate the long-term ability of the ET cover to protect
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nearby groundwater quality. The ET cover design and basis presented in Appendix A will be used for this version of the Plan.
The design criteria summaries in this section are adapted from the Updated Tailings Cover Design Report.
A copy of the Tailings Cover Design Report is included as Appendix A. It contains all of the calculations used in design and summarized in this section.
3.3.1 Regulatory Criteria
Information contained in 10 CFR Part 20, 10 CFR Part 40 and Appendix A to 10 CFR Part 40 (which are incorporated by reference into UAC R313-24-4), and 40 CFR Part 192 were used as criteria in final designs
under this Plan. In addition, the following documents also provided guidance:
• Benson, C.H. W.H. Albright, D.O. Fratta, J.M. Tinjum, E. Kucukkirca, S.H. Lee, J. Scalia, P.D.
Schlicht, and X. Wang, 2011. Engineered Covers for Waste Containment: Changes in Engineering
Properties and Implications for Long-Term Performance Assessment (in four volumes). NUREG/CR-7028, Prepared for the U.S. Nuclear Regulatory Commission, Washington, D.C.,
December.
• Johnson, T.L., 2002. "Design of Erosion Protection for Long-Term Stabilization." U.S. Nuclear
Regulatory Commission (NRC), NUREG-1623. September.
• Nelson, J.D. , S.R. Abt, R.L. Volpe, D. Van Zye, N.E. Hinkle, and W.P. Staub, 1986.
Methodologies for Evaluating Long-Term Stabilization Designs of Uranium Mill Tailings
Impoundments, NUREG/CR-4620. June.
• U. S. Department of Energy (DOE), 1988. Effect of Freezing and Thawing on UMTRA Covers,
Albuquerque, New Mexico, October.
• U.S. Department of Energy (DOE), 1989. UMTRA-DOE Technical Approach Document,
Revision II, UMTRA-DOE/AL 050425.0002. December.
• U.S. Nuclear Regulatory Commission (NRC), 1984. Radon Attenuation Handbook for Uranium
Mill Tailings Cover Design, NUREG/CR-3533
• U.S. Nuclear Regulatory Commission (NRC), 1989. Calculation of Radon Flux Attenuation by
Earthen Uranium Mill Tailings Covers, Regulatory Guide 3.64.
• U.S. Nuclear Regulatory Commission (NRC), 1990. "Final Staff Technical Position, Design of
Erosion Protective Covers for Stabilization of Uranium Mill Tailings Sites," August.
• U.S. Nuclear Regulatory Commission (NRC), 2003. Standard Review Plan for the Review of a Reclamation Plan for Mill Tailings Sites under Title II of the Uranium Mill Tailings Radiation
Control Act of 1978. NUREG-1620, Revision 1, June.
As mentioned above, the requirements set out in Part I.D.8 of the GWDP require that the cover system for each tailings cell will be designed and constructed to meet the following minimum performance
requirements for a period of not less than 200 years:
• Minimize the infiltration of precipitation or other surface water into the tailings, including, but not
limited to the radon barrier
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• Prevent the accumulation of leachate head within the tailings waste layer that could rise above or
over-top the maximum FML elevation internal to any disposal cell, i.e. create a “bathtub” effect
• Ensure that groundwater quality at the compliance monitoring wells does not exceed the GWQSs or GWCLs specified in Part I.C.1 and Table 2 of the GWDP
3.3.2 Radon Flux Attenuation
Analyses of radon attenuation through the monolithic ET cover have been performed, and incorporate the current cover design, final grading plan, and results of geotechnical testing of material properties.
Emanation of radon-222 from the top surface of the proposed cover system for the tailings cells was calculated using the NRC RADON model (NRC, 1989). The model was used to confirm that the designed
cover system can achieve the State of Utah’s long-term radon emanation standard for uranium mill tailings
(Utah Administrative Code, Rule 313-24), 20 picocuries per square meter per second (pCi/m2-s). The analyses were conducted following the guidance presented in NRC publications NUREG/CR-3533 (NRC,
1984) and Regulatory Guide 3.64 (NRC, 1989). Results of the analyses show that the proposed cover
system can reduce the rate of radon-222 emanation to less than 20 pCi/m2-s, averaged over the entire area of each tailings cell. A complete description of the radon attenuation analyses conducted for the ET cover
system is included in Appendix A.
3.3.3 Infiltration Analysis
Infiltration modeling was conducted for the monolithic ET cover and a complete description of the analyses
were provided in the ICTM Report (MWH, 2010). The modeling was updated to address DWMRC
comments on the ICTM Report (DRC, 2012; 2013) and to incorporate additional geotechnical and hydrologic data collected in as part of field investigations conducted in 2010 and 2012 for cover borrow
material and in 2013 for in situ tailings. The updated infiltration modeling results were presented in EFRI (2012b) and EFRI (2015c). The evaluation of infiltration of precipitation through the cover system was evaluated with the computer program HYDRUS-1D (Simunek et al., 2009). The modeling used historical
daily meteorological data for precipitation and evapotranspiration over a 57-year climate period, as well as assumptions that were either conservative or based on anticipated conditions. Given the flat nature of the cover (less than 1 percent slope), no run-on- or runoff-based processes were assumed to occur. As a result,
precipitation applied to the cover surface was removed through evaporation or transpiration, retained in the soil profile as storage, or transmitted downward as infiltration.
The model-predicted average long-term water flux rate through the cover system is 2.3 mm/yr. Additional
model scenarios were analyzed to evaluate the sensitivity of the soil properties, climate, and reduced vegetation parameters. The range of average long-term water flux rates for these scenarios varied from 1.9
to 8.6 mm/yr. The model-predicted water flux rates through the monolithic ET cover indicate that the
available cover storage capacity should be sufficient to significantly reduce infiltration through the cover system. A complete description of the infiltration analyses conducted for the monolithic ET cover is
provided in MWH (2010) with updates provided in EFRI (2012b, 2015c), and is summarized in Appendix
A to this Reclamation Plan.
3.3.4 Freeze/Thaw Evaluation
A freeze/thaw analysis was performed for the monolithic ET cover system, utilizing geotechnical properties
of materials specified for use in construction of the cover. The calculations of frost penetration at the site
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were performed with the computer program ModBerg (CRREL), which uses a built-in weather database, as well as user-defined soil parameters.
The freeze/thaw calculations estimate the total depth of frost penetration for the cover system as 32 inches
(2.67 ft). The frost penetration depth is not anticipated to exceed the depth of Layers 3 and 4 of the cover system (combined depth of 4 ft). The physical and hydraulic properties of these cover system layers after
construction are expected to be close to long-term properties from pedogenic processes, such that post-
construction changes due to freeze/thaw should be minimal. A complete description of the freeze/thaw analyses conducted for the proposed cover system is presented in the Updated Tailings Cover Design
Report, attached as Appendix A to this Reclamation Plan.
3.3.5 Soil Cover Erosion Protection
The erosional stability of the reclaimed tailings cells was evaluated in terms of long-term water erosion
under extreme storm conditions. The analyses were conducted in general accordance with NRC guidelines (NRC, 1990; Johnson, 2002). A description of the analyses performed is presented in Appendix A.
The components of erosion protection for the reclaimed tailings cells consist of the following:
• The cover on the top surface of Cells 1, 2, and 3, with slopes of 0.5 percent, would be constructed as a vegetated slope, with 6 inches of topsoil.
• The portions of Cell 2 with a top surface of 1 percent slope, and the portions of Cells 4A and 4B with 0.8 percent slope, would be constructed as a vegetated slope with 6 inches of topsoil mixed
with 25 percent (by weight) gravel (maximum diameter of 1 inch).
• Erosion protection of external (5H:1V) side slopes would be provided by various sized angular and
rounded riprap with layer thicknesses ranging from 6 to 8 inches and median particle sizes ranging
from 1.7 to 5.3 inches. A 6-inch layer of filter material would be placed between the erosional protection layer and underlying soil layer in locations with riprap greater than 1.7 inches. A narrow
zone of this filter will also be placed at the interface between the riprap (greater than 1.7 inches) on
the external side slopes and the cover surface erosion protection layer.
• The toe of embankment slopes will have erosional protection and scour protection on the west and
east sides of the cells provided by a rock apron measuring approximately 10 inches deep and 5 feet wide, with a median particle size of 3.4 inches. On the south side of cells 4A and 4B, and east side
of Cell 4A, the rock apron would be approximately 3 feet in depth, 13 feet in width, and have a
median particle size of 10.6 inches. On the north side slope of the Cell 1 disposal area, the rock apron would be approximately 3 feet deep, 11 feet wide, and have a median particle size of 9 inches.
• The Sedimentation Basin area will be graded to 0.1 percent slope and constructed as a vegetated slope with 6 inches of topsoil.
• The Diversion Channel will be excavated into bedrock.
3.3.6 Slope Stability Analysis
Static (long-term) and pseudo-static slope stability analyses were performed for two critical cross sections
through the tailings embankments. The analyses were performed using limit equilibrium methods with the
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computer program SLOPE/W (Geo-Slope, 2007). A complete description of the input parameters and assumptions used in the analyses is provided in Appendix A. Material strength parameters used for the
analyses were based on historical laboratory testing on tailings and clay materials (Advanced Terra Testing,
1996; Chen and Associates, 1987; D’Appolonia, 1982; and Western Colorado Testing, 1999), laboratory testing conducted in 2010 and 2012 on potential cover borrow materials (see Attachment B of EFRI, 2012a),
laboratory testing conducted in 2013 on tailings (MWH, 2015b) and typical published values.
The mean Peak Ground Acceleration (PGA) for reclaimed conditions is 0.15g based on the site specific PSHA (MWH, 2015a). This PGA represents the seismic loading from the Maximum Credible Earthquake
(MCE). The seismic coefficient used for the pseudo static stability analysis was 0.10 g (equal to 2/3 of the PGA).
The calculated factors of safety range from 2.6 to 3.9 and 1.7 to 2.5 for static and pseudo-static loading
conditions, respectively. The calculated factors of safety for both the long-term static condition and the pseudo-static condition exceed the required values of 1.5 and 1.1 respectively (NRC, 2003).
3.3.7 Tailings Dewatering
Cells 2, 3, 4A, and 4B are constructed to allow tailings dewatering. Dewatering analyses have been conducted for these tailings management cells assuming the cells receive tailings to the maximum permitted
tailings elevation. Dewatering analyses for Cells 2 and 3 were conducted by MWH and are presented in
Appendix A. Dewatering analyses for Cells 4A and 4B were conducted by Geosyntec (2007a, 2007b). The pertinent excerpts from MWH (2010), Geosyntec (2007a, 2007b), and DRC (2008) are included in
Appendix A.
Water levels in Cells 2 and 3 were measured during the October 2013 tailings investigation (MWH, 2015b). Results of the investigation indicated migration of water towards the sump in Cell 2. This was expected
since water has been pumped from the Cell 2 sump since 2008. Dewatering of Cell 3 has not yet started
and the October 2013 investigation reflected this, with measured water levels a few feet below the tailings surface.
To monitor changes in water levels due to dewatering prior to and after final cover placement, installation
of standpipe piezometers was recommended across the cells prior to the first phase of final cover placement and extension of the piezometers during final cover placement. These piezometers will provide
information on the rate and extent of dewatering of the tailings. The piezometers are primarily located adjacent to the settlement monuments to minimize damage to the piezometers during cover construction, while providing sufficient locations to evaluate the water levels. Water levels are recommended to be
monitored at the same frequency and duration as the settlement monuments. Piezometer locations for Cell 2 are shown in Appendix L of the Updated Tailings Cover Design Report.
3.3.8 Settlement and Liquefaction Analyses
Settlement analyses and evaluation of liquefaction potential for the tailings were performed for the tailings cells. A discussion of the analyses and results are provided in Appendix A.
One-dimensional settlement analyses were conducted to evaluate settlement due to placement of final
cover, dewatering of the tailings cells, long-term static (creep) settlement, and seismically induced (seismic)
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settlement. The results of these analyses of specific locations were used to evaluate differential settlement and the potential for cover cracking. The CPT locations in Cell 2 and 3 from the October 2013 tailings
investigation (MWH, 2015b) were selected as the locations for the settlement analyses. Parameters used
for the settlement analyses are summarized in Appendix A. Tailings profiles and properties are based on results presented in MWH (2015a). Parameters for cover materials are based on cover material testing
conducted in 2010 and 2012 (summarized in Appendix A). Evaluation of total settlement due to final cover
placement and dewatering indicates potential future settlement during active maintenance ranging from 0.9 to 1.6 feet.
The majority of this settlement is expected occur after Phase 1 cover construction with the remaining settlement occurring soon after Phase 2 cover construction. During this time, additional fill may be placed in low areas to maintain positive drainage of the cover surface. The estimated total predicted future long-
term settlement that could occur (due to creep and seismic settlement) after the maintenance period is complete ranges from approximately 0.3 to 0.7 feet. Estimates of total long-term settlement were calculated by summing the static creep and seismic settlement estimates. As such, these estimates are considered
somewhat conservative, as they are not independent (i.e. as long-term static creep progresses, void ratio reduction will occur and the potential for seismic settlement will reduce over time as a result). The
estimated differential settlement after completion of active maintenance is sufficiently low that slope
reversal and ponding is not expected to occur on a cover slope of 0.5 to 1.0 percent. In addition, the results indicate that cracking of the highly-compacted radon barrier due to settlement-induced strains is not
expected.
Liquefaction analyses were performed to evaluate the risk of earthquake-induced liquefaction of the tailings. Two methods (Idriss and Boulanger, 2008; Youd et al., 2001) were used for the analyses. Material
properties were obtained from results of laboratory tests on tailings samples collected during the October
2013 tailings investigation of Cells 2 and 3 (MWH, 2015b). Other parameters used were based on CPT data measured during the October 2013 tailings investigation. Results of the site-specific PSHA (MWH,
2015a) were used in the analyses and include a PGA of 0.15g for an approximate 10,000-year return period,
with the mean seismic source being a magnitude (Mw) 5.5 event occurring 20 km from the site. Computed factors of safety against liquefaction range from 2.0 to 2.8. Based on the calculated factors of safety, the
tailings are not susceptible to earthquake-induced liquefaction.
3.3.9 Vegetation and Biointrusion
The plant species proposed for the cover system consist of native perennial grasses, forbs, and shrubs. The
use of these species in reclamation of the tailing management cells provide a permanent or sustainable plant cover because of the highly adapted nature of these species to existing site conditions, their tolerance to
environmental stresses such as drought, fire, and herbivory, and their ability to effectively reproduce over
time. These species can coexist and fully utilize plant resources to minimize the establishment of invasive weeds and deep rooted woody species on the site. Once established, the proposed seed mixture produce a
grass-forb-shrub community of highly adapted and productive species that can effectively compete with
undesirable species. A complete discussion of cover vegetation is provided in Appendix A.
The proposed cover system is designed to minimize both plant root and burrowing animal intrusion through
the use of thick layers of soil cover (total thickness 9.5 to 10.5 ft) in combination with a highly compacted
layer placed at a depth that is below the expected rooting and burrowing depths of species that may inhabit the site. Root growth and animal burrowing into the highly compacted radon attenuation layer (beginning
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at a depth of 4 ft) will be restricted because of the high density of this material (compaction to 95 percent relative compaction based on the standard Proctor test). In addition, both root density and the size of roots
decrease at a rapid rate with rooting depth, further limiting the potential for root growth into the compacted
radon attenuation layer of the cover system. A complete discussion of the biointrusion evaluation through the ET cover is presented in Appendix A.
3.3.10 Cover Material/Cover Material Volumes
Material volumes required for construction of the interim cover, final cover, and erosion protection are provided in Table 3.3-1. The quantities of materials available for construction of the cover are also provided
in Table 3.3-1. A summary of the volumes of borrow stockpiles was provided in Appendix A. Sufficient quantities are available from on-site sources for the topsoil and random fill materials. The bedding and gravel materials would be obtained from off-site commercial sources. Three commercial sources have been
identified as potential sources for the bedding and gravel materials. The potential off-site sources were listed in Appendix A. Sufficient quantities of material are available from the off-site sources identified.
Table 3.3-1. Reclamation Cover Material Quantity Summary
Material Quantity Required for Reclamation (cy)
Quantity Available (Identified
Sources) (cy)
Topsoil (for Erosion Protection Layer) 195,000 284,100 (on-site stockpiles)
Gravel (1-inch minus for Erosion Protection Layer) 24,000 Sufficient quantity available (off-site commercial source)
Random Fill (total for additional Layer 1
material, Layer 2, and Layer 3) 3,500,000 3,596,621 (on-site stockpiles)
Riprap (for 5H:1V side slopes and rock
aprons) 38,000 Sufficient quantity available (off-site
commercial source)
Riprap Bedding/Filter Layer 16,0001 Sufficient quantity available (off-site commercial source)
Note: Based on 6-inch thick medium sand bedding/filter layer beneath riprap.
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4 MILL DECOMMISSIONING PLAN

The preliminary plans for decommissioning of the Mill are presented in the plan included as Appendix B
to this Reclamation Plan. This information has been updated since the previous Reclamation Plan, Revision
5.0 (Denison, 2011c). The Preliminary Decommissioning Plan attached as Appendix B includes a description of the following activities to be performed during the decommissioning process:
• Development and implementation of health and safety procedures
• Execution of pre-decommissioning activities
• Demolition of above-ground and under-ground facilities, and placement of these materials in the Cell 1 Disposal Area or the last active tailings cell
• Excavation of contaminated subsoils from the process area and placement in the Cell 1 Disposal Area or the last active tailings cell
• Clean-up of windblown contamination and placement in the Cell 1 Disposal Area or the last active tailings cell
• Regrading and revegetation
The Plan further describes the requirements prior to demolition and the procedures to be used for specific
locations within the process area, as well as requirements for personnel training, environmental monitoring,
and management of water and contaminants. The work should be conducted under the EFRI Radiation Protection Manual, as directed by the site Radiation Safety Officer.
The EFRI Radiation Protection Manual for Reclamation is included as Attachment D to this Reclamation
Plan.
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5 REVERSION TO EXISTING COVER DESIGN

5.1 Background
On November 11, 2015, the UDEQ Division of Waste Management and Radiation Control (DWMRC)
recommended EFRI develop a plan to begin reclamation of the tailings management system cells. This plan would consist of placing the cover system presented in this Plan (the “Proposed Cover System”) on
Cell 2 and demonstrating acceptable cover performance via a performance monitoring program.
Per the Stipulation and Consent Agreement (SCA) in development between EFRI and DWMRC, Cell 2 reclamation is planned to occur in 2 phases. Phase 1 is comprised of Layers 1 and 2 of the Proposed Cover
System, and will be placed on Cell 2 along with a Primary Test Section that contains all of the Proposed Cover System, including the vegetative cover. The Primary Test Section along with a Supplemental Test Section (located off of Cell 2, and relating only to vegetative cover and erosion control) will be tested over
a period of approximately 7 years (the “Cell 2 Test Period”).
Under the SCA, the Cell 2 Primary Test Section and Supplemental Test Section will have to meet required
performance criteria to verify the effectiveness of the Proposed Cover System and initiate Phase 2 cover
placement.
5.2 Proposed Cover Design Meets all Applicable Regulatory Criteria
If the Primary Test Section and Supplemental Test Section demonstrate that the Proposed Cover System
meets all applicable regulatory criteria, then:
a) Cell 2
Phase 2, comprised of Layer 3, Layer 4 and the vegetative cover of the Proposed Cover System, will
be placed on Cell 2, in accordance with the SCA and Section 6.0 below;
b) Other Tailings Management System Cells being Reclaimed during Cell 2 Test Period
In the event that any other tailings management system cells are to be reclaimed during the Cell 2 Test
Period, such tailings impoundments will be reclaimed by placing Phase 1 of the Proposed Cover System on the cell, and then waiting until the Cell 2 test is completed. Thereafter, reclamation of the cells will
be completed in the same manner as Cell 2, in accordance with the SCA and Section 6.0 below; and
c) Other Tailings Management System Cells Being Reclaimed after Cell 2 Test Period
Upon final reclamation in accordance with Section 6.0 below, the other tailings management system
cells, which had not commenced reclamation during the Cell 2 test period, would be reclaimed with the Proposed Cover System.

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5.3 Proposed Cover Design Does not Meet all Applicable Regulatory Criteria
If the Cell 2 Primary Test Section and Supplemental Test Section fail to meet the required performance
criteria and follow up actions (to be identified in the SCA), then:
a) Cell 2
EFRI will complete Cell 2 Phase 2 cover placement by placing Layers 2, 3, and 4 of the Existing Cover
System presented in Reclamation Plan Revision 3.2b (Denison, 2011b) (the “Existing Cover System”) on top of the Phase 1 layers, as follows:
i. the Cell 2 Phase 1 cover system (which includes the Proposed Cover System Layers 1 and 2) would remain in place;
ii. the Existing Cover System Layer 2, comprised of 1 ft (30.5cm) Radon Barrier (compacted clay),
would be placed on top of the Cell 2 Phase 1 cover;
iii. The Existing Cover System Layer 3 comprised of 2 ft (61 cm) Frost Barrier (random fill), would be placed on top of the Existing Cover System Layer 2; and
iv. the Existing Cover System Layer 4, comprised of 3 in (7.6 cm) Rock Armor would be placed on top of Existing Cover System Layer 3.
b) Other Tailings Management System Cells being Reclaimed during Cell 2 Test Period
In the event that any other tailings management system cells are to be reclaimed during the Cell 2 Test Period, such cells will be reclaimed by placing Phase 1 of the Proposed Cover System on the cells, and
then waiting until the Cell 2 test is completed. Thereafter, reclamation of the cell will be completed in
the same manner as Cell 2, in accordance with the SCA and Section 6.0 below. If Phase 1 of the Proposed Cover System is not completed during the Cell 2 Test Period for any such cells, then such
cells may be reclaimed with the Existing Cover System; and
c) Other Tailings Management System Cells Being Reclaimed after Cell 2 Test Period
Upon final reclamation in accordance with Section 6.0 below, the other tailings management system
cells which had not commenced reclamation during the Cell 2 Test Period, would be reclaimed with
the Existing Cover System.
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6 MILESTONES AND SCHEDULE COMMITMENTS FOR RECLAMATION
6.1. Background
Utah Administrative Code R313-24-4, incorporating by reference 10 CFR Part 40 Appendix A Criterion 6A (“Criterion 6A”) paragraph (1), provides that: “For impoundments containing uranium byproduct
materials, the final radon barrier must be completed as expeditiously as practicable considering
technological feasibility after the pile or impoundment ceases operation in accordance with a written, Commission-approved reclamation plan. (The term as expeditiously as practicable considering
technological feasibility as specifically defined in the Introduction of this appendix includes factors beyond the control of the licensee.) Deadlines for completion of the final radon barrier and, if applicable, the following interim milestones must be established as a condition of the individual license: windblown
tailings retrieval and placement on the pile and interim stabilization (including dewatering or the removal of freestanding liquids and re-contouring). The placement of erosion protection barriers or other features
necessary for long-term control of the tailings must also be completed in a timely manner in accordance
with a written, Commission-approved reclamation plan.”
As contemplated by Criterion 6A, this Section sets out the interim milestones and deadlines for completion
of the final radon barrier for individual tailings impoundments (referred to in this Section as “tailings impoundments” or “conventional impoundments”) at the Mill after each such impoundment begins final
closure. It also sets out milestones for the removal and disposal of non-conventional impoundments
(referred to in this Section as “evaporation ponds” or “non-conventional impoundments”) after each such impoundment begins final closure, as well as additional milestones applicable to final Mill site closure. A
table that summarizes all of these milestones is included in Section 6.2.6 below.
Also included below are schedule commitments for other events or actions which are not “milestones”
required under Criterion 6A, but instead are schedule commitments to be achieved in order to ensure that
those events or actions are completed in a timely manner. As these schedule commitments are not milestones they do not come under the specific provisions of paragraph (2) of Criterion 6A. However, a
general timeliness standard for completing those items is retained. The licensee must complete those actions in a timely way, and the Director has the authority to take action if necessary in this regard. As these schedule commitments are not milestones required under Criterion 6A(1), they are not included in the
table set out in Section 6.2.5 below.
6.2. Milestones and Schedule Commitments
6.2.1. General
(a) Definition of “Operation”
“Operation” means that an impoundment is being used for the continued placement of uranium
byproduct material or tailings or is in standby status for such placement. An impoundment is in operation from the day that uranium byproduct material or tailings are first placed in the impoundment
until the day that final closure begins.

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(b) When Final Closure of an Impoundment Begins
Final closure of an impoundment begins when the owner or operator provides written notice to the EPA and to the Director that:

i) In the case of a conventional impoundment (i.e., a tailings impoundment), the impoundment is no longer receiving uranium byproduct material or tailings, is no longer on standby
status for such receipt and is being managed under an approved reclamation plan for that impoundment or facility closure plan; and
ii) In the case of a non-conventional impoundment (e.g., an evaporation pond), the impoundment is no longer required for evaporation or holding purposes, is no longer on standby for such purposes and is being managed under an approved reclamation plan for that impoundment or
facility closure plan.
An approved reclamation plan prepared and approved in accordance with 10 CFR part 40, Appendix
A is considered a reclamation plan for purposes of this paragraph 6.2.1(b).
(c) The Existing Tailings Management System at the Mill
The tailings management system at the Mill currently consists of three tailings impoundments: Cell
2, which is not in operation and is in final closure, and Cells 3 and 4A, which are in operation. Cell
1 is an evaporation pond. Cell 4B is currently being used as an evaporation pond and will continue to be used as an evaporation pond until it first starts to receive tailings sands or other byproduct
material (other than solutions) for disposal. Future cells may commence as evaporation ponds, and
will continue as evaporation ponds until they first receive tailings sands or other byproduct material (other than solutions) for disposal, at which time they will become tailings impoundments.

(d) The Proposed Cover Design and Existing Cover Design
This Plan presents a proposed evapotranspiration (ET) cover (the “Proposed Cover Design”) as a component of the reclamation plan for the tailings impoundments, to replace the rock armor cover
design (the “Existing Cover Design”) set out in Appendix D to the Reclamation Plan Version 3.2b
(Denison, 2011b).
The Stipulation and Consent Agreement described in Section 6.2.1(e) below and Section 5.0 above
describe a set of circumstances under which the Final Cover Design could be the Existing Cover Design rather than the Proposed Cover Design. Section 5.0 of this Plan describes the manner in which
EFRI would revert from the Proposed Cover Design to the Existing Cover Design if so required by
the Stipulation and Consent Agreement.

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i) The Proposed Cover Design
The Proposed Cover Design will have a minimum thickness of 9.5 feet, and will consist of the
following layers listed below from top to bottom:
• Layer 4 - 0.5 ft (15 cm) thick Erosion Protection Layer (topsoil-gravel admixture or topsoil)
• Layer 3 - 3.5 ft (107 cm) thick Water Storage/Biointrusion/Frost Protection/Secondary Radon Attenuation Layer (loam to sandy clay)
• Layer 2 – 3.0 - 4.0 ft (91 to 122 cm) thick Primary Radon Attenuation Layer (highly compacted loam to sandy clay)
• Layer 1 - 2.5 ft (76 cm) thick (minimum) Secondary Radon Attenuation and Grading Layer (loam to sandy clay)

All the layers combined comprise the monolithic ET cover system.
ii) The Existing Cover Design
The Existing Cover Design will have a minimum thickness of 6 feet, and will consist of the following
layers listed below from top to bottom:
• Layer 4 -- 3 in (7.6 cm) Rock Armor
• Layer 3 -- 2 ft (61 cm) Frost Barrier Layer (random fill)
• Layer 2 -- 1 ft (30.5) Radon Barrier (compacted clay)
• Layer 1 -- Minimum 3 ft (91.4 cm) Platform Fill (random fill)
(e) The Stipulation and Consent Agreement
EFRI and the Director of the UDEQ DWMRC have entered into a Stipulation and Consent Agreement
(the “SCA”), which sets out the terms on which the Mill will test the effectiveness of the Proposed Cover Design and, together with Section 5.0 of this Plan, the circumstances in which the approved Cover Design for reclamation of tailings impoundments could be a variation of the Proposed Cover
Design or the Existing Cover Design, rather than the Proposed Cover Design. 6.2.2. Deadlines, Interim Milestones and Schedule Commitments for Closure of Cell 2
The deadlines and interim milestones and schedule commitment dates for closure of Cell 2 are set out in
the SCA. The requirements set out in the SCA are incorporated by reference into this Plan as if set out in
this Plan. The final radon barrier for Cell 2 (Layers 1 and 2 under the Proposed Cover Design) has been put in place. Radon flux measurements taken since the final radon barrier has been placed onto Cell 2 have
been well below the 20 pCi/m2s standard set out in Criterion 6A.
6.2.3. Milestones and Schedule Commitments for Closure of a Conventional Impoundment (i.e., a Tailings Impoundment), other than Cell 2
A conventional impoundment (i.e., tailings impoundment), other than Cell 2, may begin final closure at any
time, including while the Mill facility as a whole remains in operation as well as during or after final Mill
site decommissioning and closure. Once final closure of a conventional impoundment begins as specified in Section 6.2.1 b) above, the final radon barrier for the impoundment shall be completed as expeditiously
as practicable thereafter considering technological feasibility (including taking into consideration factors
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beyond the control of the licensee) in accordance with this Plan and the deadlines, milestones and schedule commitments set out below:

(a) Interim Stabilization (Including Dewatering or the Removal of Freestanding Liquids and Re-contouring) of the Tailings Impoundment.
i) Removal of Freestanding Liquids
Commencing on the date the impoundment begins final closure in accordance with Section 6.2.1 b) above, the addition of liquids to the tailings impoundment, other than by natural precipitation, will cease, and free standing liquids will be allowed to dry out by natural
evaporation. To the extent reasonably practicable, and if excess evaporative capacity is available in other cells in the tailings management system, the Mill will transfer solutions out of the tailings impoundment and into other tailings impoundments and/or evaporation ponds in
order to enhance evaporation and removal of solutions from the impoundment. This item must be completed within one year after the impoundment begins final closure. This deadline is a
milestone as required by Criterion 6A(1), and is subject to the provisions of Criterion 6A(2).
ii) Re-contouring

Re-contouring of the tailings impoundment, in accordance with Drawings and Attachment A (Technical Specifications) of this Plan (“Re-contouring”), will commence upon removal of
freestanding liquids from the impoundment and must be completed within two years after the
impoundment begins final closure. This deadline is a milestone as required by Criterion 6A(1), and is subject to the provisions of Criterion 6A(2).

iii) Commencement of Dewatering
Dewatering of the impoundment shall commence upon completion of re-contouring of the impoundment, and shall continue until the impoundment is dewatered as contemplated by item 6.2.3(a)(vii) below. This deadline is a milestone as required by Criterion 6A(1), and is subject
to the provisions of Criterion 6A(2).
iv) Placement of Layer 1
Upon completion of re-contouring of the impoundment, EFRI will complete placement of
Layer 1 (Secondary Radon Attenuation and Grading Layer under the Proposed Cover Design
or Platform Fill under the Existing Cover Design, as applicable) on the impoundment, in accordance with this Plan. This item must be completed within three years after the date the
impoundment begins final closure. This deadline is a milestone as required by Criterion 6A(1),
and is subject to the provisions of Criterion 6A(2).
v) Placement of Layer 2 (Final Radon Barrier)
Upon EFRI being satisfied that there have been decreasing trends in settlement followed by a
maximum of 0.1 feet (30 mm) of cumulative settlement over 12 months (for at least 90 percent
of the settlement monuments), or at such earlier time as EFRI may determine, EFRI shall commence placing Layer 2 (the Primary Radon Attenuation Layer under the Proposed Cover
Design or the Radon Barrier under the Existing Cover Design, as applicable) on the
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impoundment. This item must be completed as expeditiously as practicable considering technological feasibility (including factors beyond the control of the licensee), but in any event
within seven years after the impoundment begins final closure. This deadline is a milestone as
required by Criterion 6A(1), and is subject to the provisions of Criterion 6A(2).
vi) Placement of Layer 3

After placement of Layer 2, EFRI will place Layer 3 (the Water Storage/Biointrusion/Frost Protection/Secondary Radon Attenuation Layer under the Proposed Cover Design or the Frost
Barrier Layer under the Existing Cover Design, as applicable) on the impoundment. Timing of commencement of this item will be at the discretion of EFRI, and Layer 3 may be placed prior to or after completion of dewatering. The schedule commitment for this item is to have
it completed within the later of (A) seven years after the impoundment begins final closure and (B) two years after completion of placement of Layer 2 on the impoundment, or such later date as may be approved by the Director. This item is not a milestone required under Criterion
6A(1) because it follows placement of the final radon barrier and is not required for that action, and because there is a separate milestone for dewatering. Instead, this item is included as a
schedule commitment to be achieved in order to ensure that the activity is completed in a timely
manner. As this schedule commitment is not a milestone it does not come under the specific provisions of paragraph (2) of Criterion 6A. However, a general timeliness standard for
completing this activity is retained. EFRI must complete this activity in a timely way, and the
Director has the authority to take action if necessary in this regard.
vii) Completion of Dewatering
Dewatering shall be considered to be complete when, after the placement of Layer 2 and Layer
3 (if Layer 3 is placed prior to completion of dewatering) decreasing trends in settlement
followed by a maximum of 0.1 feet (30 mm) of cumulative settlement over 12 months (for at least 90 percent of the settlement monuments) have occurred. This item must be completed
within the later of (A) seven years after the impoundment begins final closure and (B) two years after completion of placement of Layer 2 on the impoundment. This deadline is a milestone as required by Criterion 6A(1), and is subject to the provisions of Criterion 6A(2).
viii) Placement of Layer 4 Under the Proposed Cover Design

Placement of Layer 4 under the Proposed Cover Design (Erosion Protection Layer) on the impoundment will commence after the completion of dewatering (this item does not apply to
the Existing Cover Design). The schedule commitment for this item is to have it completed
within the later of (A) eight years after the impoundment begins final closure and (B) two years after completion of placement of Layer 3 on the impoundment, or such later time as may be
approved by the Director. This item is not a milestone required under Criterion 6A(1), because
it follows placement of the final radon barrier and is not required for that activity. Instead, this item is included as a schedule commitment to be achieved in order to ensure that the activity is
completed in a timely manner. As this schedule commitment is not a milestone it does not come
under the specific provisions of paragraph (2) of Criterion 6A. However, a general timeliness standard for completing this activity is retained. EFRI must complete this activity in a timely
way, and the Director has the authority to take action if necessary in this regard.

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ix) Vegetative Cover
If the Cover Design, as approved by the Director in accordance with the procedures described
in the SCA and Section 5.0 of this Plan, is the Proposed Cover Design or otherwise calls for vegetative cover on the impoundment, then revegetation of the cover will take place at the
completion of placement of Layer 4 (Erosion Protection Layer) on the impoundment, in
accordance with the revegetation plan set out in Appendix J to the Updated Cover Design Report. All required seeding for re-vegetation will commence in the first available growing
season after the completion of placement of Layer 4 (Erosion Protection Layer) on the impoundment, as determined by the Director, and will be completed by the end of such growing season, or such later time as may be approved by the Director. This item is not a milestone
required under Criterion 6A(1), because it follows placement of the final radon barrier and is not required for that activity. Instead, this item is included as a schedule commitment to be achieved in order to ensure that the activity is completed in a timely manner. As this schedule
commitment is not a milestone it does not come under the specific provisions of paragraph (2) of Criterion 6A. However, a general timeliness standard for completing this activity is retained.
EFRI must complete this activity in a timely way, and the Director has the authority to take
action if necessary in this regard.
x) Rock Armor
If the Cover Design, as approved by the Director in accordance with the procedures described
in the SCA and Section 5.0 of this Plan, is the Existing Cover Design or includes Layer 4 (Rock
Armor) of the Existing Cover Design, then rock armor shall be placed on the tailings impoundment, in accordance with Reclamation Plan 3.2b (Denison, 2011b). In addition, rock
armor is required for the exterior slopes of the impoundment under the Proposed Cover Design.
Such placement, will commence within one year after completion of dewatering on the impoundment in accordance with Section 5.0 of this Plan, and will be completed within 180
days thereafter, or such later date as may be approved by the Director. This item is not a milestone required under Criterion 6A(1), because it follows placement of the final radon barrier and is not required for that activity. Instead, this item is included as a schedule commitment to
be achieved in order to ensure that the activity is completed in a timely manner. As this schedule commitment is not a milestone it does not come under the specific provisions of paragraph (2)
of Criterion 6A. However, a general timeliness standard for completing this activity is retained.
EFRI must complete this activity in a timely way, and the Director has the authority to take action if necessary in this regard.

(b) Leaving a Portion of an Impoundment Open for Disposal of On-site Generated Trash or 11e.(2) Byproduct Material from ISR Operations
The License authorizes a portion of a specified impoundment to accept uranium byproduct material or such materials that are similar in physical, chemical, and radiological characteristics to the uranium
mill tailings and associated wastes already in the pile or impoundment, from other sources, during the
closure process, and on-site generated trash, provided that this does not result in a delay or impediment to emplacement of the final radon barrier over the remainder of the impoundment in a manner that will
achieve levels of radon-222 releases not exceeding 20 pCi/m2s averaged over the entire impoundment.
Reclamation of the disposal area, as appropriate, must be completed in a timely manner after disposal operations cease in accordance with paragraph (1) of Criterion 6A; however, these actions are not
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required to be completed as part of meeting the deadline for final radon barrier construction for the impoundment.

(c) Windblown Tailings Retrieval and Placement on the Impoundment
As the Mill facility as a whole may still be in operation at the time the impoundment is being reclaimed,
there may not be a need to retrieve any windblown tailings for placement on the impoundment at the time of final closure of the impoundment. Those activities will be required during final
decommissioning of the entire Mill facility. Accordingly, the milestones associated with those activities are set out in Section 6.2.5 below.
6.2.4. Milestones and Schedule Commitments for Closure of a Non-Conventional Impoundment (e.g., an Evaporation Pond)
A non- conventional impoundment (e.g., an evaporation pond), may begin final closure at any time, including while the Mill facility as a whole remains in operation as well as during or after final Mill site
decommissioning and closure. Once final closure of a non-conventional impoundment begins as specified
in Section 6.2.1 b) above, final closure of the impoundment shall be accomplished in accordance with this Plan and the deadlines, milestones and schedule commitments set out below:

(a) Removal of Free-Standing Liquids from Evaporation Ponds
Commencing on the date the impoundment begins final closure in accordance with Section 6.2.1 b)
above, the addition of liquids to the impoundment, other than by natural precipitation, will cease, and free standing liquids will be allowed to dry out by natural evaporation. To the extent reasonably
practicable, and if excess evaporative capacity is available in other conventional or non-conventional
impoundments in the tailings management system, the Mill will transfer solutions out of the impoundment and into other impoundments in order to enhance evaporation and removal of solutions
from the impoundment. This item must be completed within five years after the impoundment begins
final closure. Although this deadline is not a milestone required under Criterion 6A(1), because it is not linked to the placement of a final radon barrier in a non-operational tailings impoundment, EFRI
agrees that for purposes of this Plan it shall be treated as a milestone as required by Criterion 6A(1), and as a result EFRI agrees that it will be subject to the provisions of Criterion 6A(2).

(b) Removal of Liners, Sediments and any Contaminated Soils from Evaporation Ponds
Upon removal of the free-standing liquids from the impoundment, the licensee shall commence
removal of all liners, sediments and any contaminated soils from and under the impoundment and dispose of such materials into one or more conventional impoundments. This item must be completed
within the earlier of (A) seven years after the impoundment begins final closure, and (B) three years
after the removal of all free-standing liquids from the impoundment. Although this deadline is not a milestone required under Criterion 6A(1), because it is not linked to the placement of a final radon
barrier in a non-operational tailings impoundment, EFRI agrees that for purposes of this Plan it shall
be treated as a milestone as required by Criterion 6A(1), and as a result EFRI agrees that it will be subject to the provisions of Criterion 6A(2).

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6.2.5. Additional Milestone for Final Mill Closure
If the Mill facility as a whole has commenced final reclamation, as defined in this Plan, then the following
additional milestone shall apply after that time:
(a) Mill Demolition and Windblown Tailings Retrieval and Placement in a Tailings
Impoundment
Mill demolition and windblown tailings retrieval, as contemplated by Attachment A (Technical Specifications) of this Plan and disposal into one or more tailings impoundments shall commence upon commencement of final closure of the entire Mill site (“Mill Final Closure”), and shall be
completed within four years after commencement of Mill Final Closure. This deadline is a milestone as required by Criterion 6A(1), and is subject to the provisions of Criterion 6A(2).
It should be noted that individual conventional and non-conventional impoundments may begin final closure before, during or after commencement or completion of Mill Final Closure, and the decision to
begin final closure on any particular impoundment is not tied to Mill Final Closure. The milestones and
schedule commitments in Sections 6.2.3 and 6.2.4 above apply to final closure of conventional and non-conventional impoundments once they begin final closure in accordance with Section 6.2.1(b) above,
whether during Final Mill Closure or otherwise. Further, as a tailings impoundment will be considered to
be in operation so long as it is receiving byproduct material, which includes Mill decommissioning materials, windblown, slimes drain dewatering solutions etc., and an evaporation pond will be considered
to be in operation so long as it is required for evaporation or holding purposes, it is expected that one or
more tailings impoundments and evaporation ponds will continue in operation during all or part of the Mill decommissioning process. One or more impoundments may also continue in operation for licensed
activities, such as direct disposal of 11e.(2) byproduct material from In Situ Recovery uranium operations
or other licensed activities, after completion of Mill Final Closure.
6.2.6. Summary Table of Milestones
The following table summarizes all of the milestones required by Criterion 6A(1), all of which are described
in more detail above.
As the schedule commitments described in detail above are not milestones required under Criterion 6A(1),
they are not included in the following table.
Milestone Reclamation Plan 5.1B Section Number Start End

1. Milestones for Closure of an Individual Conventional Impoundment (Tailings Impoundment) at any Time

1.1. Removal of Free
Standing Liquids
6.2.3(a)(i) Date final closure of the
impoundment begins in accordance with Section
6.2.1(b)
One year after
impoundment begins final closure

1.2. Re-contouring 6.2.3(a)(ii) Upon removal of free standing liquids Two years after impoundment begins final
closure
1.3. Commence Dewatering 6.2.3(a)(iii) Upon completion of Re-contouring NA
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Milestone Reclamation Plan 5.1B Section Number Start End
1.4. Placement of Layer 1
(Secondary Radon
Attenuation and Grading Layer
under the Proposed Cover
Design or Platform Fill
under the Existing Cover
Design, as applicable)
6.2.3(a)(iv) Upon completion of re-contouring Three years after impoundment begins final
closure
1.5. Placement of
Layer 2 (Final Radon Barrier)
(the Primary Radon
Attenuation Layer under the
Proposed Cover Design or the
Radon Barrier under the
Existing Cover Design, as
applicable)
6.2.3(a)(v) Upon EFRI being
satisfied that there have been decreasing trends in
settlement followed by a maximum of 0.1 feet (30
mm) of cumulative settlement over 12
months (for at least 90 percent of the settlement
monuments), or at such earlier time as EFRI may
determine
As expeditiously as
practicable considering technological feasibility
(including factors beyond the control of the
licensee), but in any event within seven years after
impoundment begins final closure
1.6. Completion of Dewatering 6.2.3(a)(vii)) NA Within later of (A) seven years after impoundment
begins final closure and (B) two years after
completion of placement of Layer 2

2. Milestones for Closure of a Non-Conventional Impoundment (Evaporation Pond) at any Time

2.1. Removal of Free
Standing Liquids
6.2.4(a)(i) Date final closure of the
impoundment begins in accordance with Section
6.2.1(b)
Five years after
impoundment begins final closure

2.2. Removal of Liners,
Sediments and any
Contaminated Soils from
Impoundment
6.2.4(a)(ii) Upon removal of the free-standing liquids
from the impoundment
Earlier of (A) seven years after the impoundment
begins final closure, and (B) three years after the
removal of all free-standing liquids from the
impoundment

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Milestone Reclamation Plan 5.1B Section Number Start End
3. Additional Milestone Applicable to Mill Final Closure

Mill Demolition and Windblown
Tailings Retrieval and
Placement in a Tailings
Impoundment
6.2.5(a) Upon commencement of Mill Final Closure Four years after Commencement of Mill
Final Closure

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U.S. Nuclear Regulatory Commission, Division of Fuel Cycle Safety and Safeguards, Office of Nuclear Material Safety and Safeguards, 2002. Environmental Assessment For International Uranium
(USA) Corporation’s Uranium Mill Site White Mesa, San Juan County, Utah, In Consideration Of An Amendment To Source Material License SUA-1358 For The Receipt And Processing Of The
Maywood Alternate Feed. August 22.
U.S. Nuclear Regulatory Commission (NRC), 2002. Regulatory Guide 8.31, Information Relevant to Ensuring that Occupational Radiation Exposures at Uranium Recovery Facilities will be As Low
As is Reasonable Achievable, Revision 1. May.
U.S. Nuclear Regulatory Commission (NRC), 2003. Standard Review Plan for the Review of a Reclamation Plan for Mill Tailings Sites under Title II of the Uranium Mill Tailings Radiation
Control Act of 1978. NUREG-1620, Revision 1. June.
U.S. Nuclear Regulatory Commission, 2007. Regulatory Guide 4.15. Quality Assurance for Radiological Monitoring Programs (Inception Through Normal Operations to License Termination), Effluent
Streams and the Environment, Rev. 2.
Utah Department of Environmental Quality, Division of Radiation Control, 2004. Statement of Basis for a Uranium Milling Facility at White Mesa, South of Blanding, Utah, Owned and Operated by
International Uranium (USA) Corporation. December 1.
Utah Department of Environmental Quality, Utah Division of Radiation Control (DRC), 2008. Email correspondence between David Rupp and Greg Corcoran regarding items noted during drain
construction inspection, Cell 4A. June 25 – July 2.
Utah Department of Environmental Quality, Division of Radiation Control (DRC), 2010. Denison Mines
(USA) Corporation Reclamation Plan, Revision 4.0, November 2009; Interrogatories – Round 1.
September.
Page R-10
Revision 5.1B
Energy Fuels Resources (USA) Inc. White Mesa Mill Reclamation Plan

Utah Department of Environmental Quality, Division of Radiation Control (DRC), 2011. Denison Mines (USA) Corporation Reclamation Plan, Revision 4.0, November 2009; Interrogatories – Round 1A.
April.
Utah Department of Environmental Quality, Division of Radiation Control (DRC), 2012. Denison Mines (USA) Corp’s Revised Infiltration and Contaminant Transport Modeling Report, Interrogatories –
Round 1. March.
Utah Department of Environmental Quality, Division of Radiation Control (DRC), 2013. Radioactive Material License (RML) Number UT 1900479: Review of September 10, 2012 Energy Fuels
Resources (USA), Inc. Responses to Round 1 Interrogatories on Revised Infiltration and
Contaminant Transport Modeling (ICTM) Report, White Mesa Mill Site, Blanding, Utah, report dated March 2010. February 7.
Utah Department of Environmental Quality Division of Solid Waste and Radiation Control, 2015. Letter to Mr David Frydenlund, Energy Fuels Resources (USA) Inc. September 16, 2015
von Hake, C.A., 1977. Earthquake History of Utah, Earthquake Information Bulletin 9, pp. 48-51.
Warner, L.A., 1978. The Colorado Lineament, A Middle Precambrian Wrench Fault System, Geological Society of America Bulletin, v. 89, pp. 161-171.
Western Colorado Testing, Inc., 1999. Report of Soil Sample Testing of Tailings Collected from Cell 2
and Cell 3, Prepared for International Uranium (USA) Corporation, May 4.
Witkind, I.J., 1964. Geology of the Abajo Mountains Area, San Juan County, Utah, U. S. Geological
Survey, Professional Paper 453.
Wong, I.G., 1981. Seismological Evaluation of the Colorado Lineament in the Intermountain Region (abs.), Earthquake Notes, v. 53, pp. 33-34.
Wong, I.G., 1984. Seismicity of the Paradox Basin and the Colorado Plateau Interior, ONWI-492,
Prepared for the Office of Nuclear Waste Isolation, Battelle Memorial Institute.
Youd, T., I. Idriss, R. Andrus, I. Arango, G. Castro, J. Christian, R. Dobry, W. Liam Finn, L. Harder, M.
Hynes, K. Ishihara, J. Koester, S. Liao, W. Marcuson, G. Martin, J. Mitchell, Y. Moriwaki, M.
Power, P. Robertson, R. Seed, and K. Stokoe, 2001. Liquefaction Resistance of Soils: Summary report from the 1996 NCEER and 1998 NCEER/NSF Workshops of Evaluation of Liquefaction
Resistance of Soils, Journal of Geotechnical and Geoenvironmental Engineering, October.
Yuan, Y.C., J.H.C. Wang, and A. Zielen, 1998, "MILDOS-AREA: An Enhanced Version of MILDOS for Large-Area Sources," ANL/ES-161.
Zoback, M.D. and Zoback, M.L., 1980. State of Stress in the Conterminous United States, Journal of Geophysical Research, v. 85, pp. 6113-6156.
Area of Drawings
TRC-1 - TRC-3
TITLE SHEET AND PROJECT LOCATION MAP REC-0
WMM COVER
C
VICINITY MAPLOCATION MAP
U T A H
ENERGY FUELS RESOURCES (USA) INC.
SAN JUAN COUNTY, UTAH
INDEX OF DRAWINGS
SHEET TITLE
See Vicinity Map
TITLE SHEET AND PROJECT LOCATION MAP
REV
INTERIM FILL GRADING PLAN
COMPACTED COVER GRADING PLAN
FINAL COVER SURFACE LAYOUT
COVER OVER CELL 2 CROSS SECTION
COVER OVER CELL 3 CROSS SECTIONS
COVER OVER CELL 2 CROSS SECTIONS
SITE MAP
Cell 1
Cell 2
Cell 3
Cell 4B Cell 4A
RECLAMATION COVER EROSION PROTECTION
SEDIMENTATION BASIN DETAIL
COVER OVER CELL 4A & 4B CROSS SECTIONS
PLAN VIEW OF RECLAMATION FEATURES
MILL SITE AND ORE PAD AREA GRADING PLAN
prepared for
WHITE MESA MILL SITE RECLAMATION
Mill Site
White Mesa
RECLAMATION COVER DETAILS (SHEET 1 OF 2)TRC-9 C
TRC-8 C
TRC-7 C
TRC-6 C
TRC-5 C
TRC-4 C
TRC-3 C
TRC-2 C
TRC-1 C
REC-3 C
REC-2 C
REC-1 C
REC-0 C
RECLAMATION COVER DETAILS (SHEET 2 OF 2)TRC-10 C
WHITE MESA MILL SITE RECLAMATION
BLANDING, UTAH
DEC 2016
ENERGY FUELS
NOTE:
DRAWINGS REC-0 THROUGH REC-3 PRESENT THE OVERALL RECLAMATION PLANS FOR THE
ENTIRE WHITE MESA MILL SITE. DRAWINGS TRC-1 THROUGH TRC-10 PRESENT THE
RECLAMATION PLANS FOR THE CELLS USED FOR TAILINGS DISPOSAL OR PROCESS WATER
EVAPORATION (CELLS 1, 2, 3, 4A, AND 4B).
CELLS 1 AND 4B ARE CURRENTLY USED FOR PROCESS WATER EVAPORATION. THE
RECLAMATION PLANS REFLECTED IN THESE DRAWINGS ARE BASED ON POTENTIAL USE OF
CELL 4B IN THE FUTURE FOR TAILINGS DISPOSAL.
RESTRICTED AREA BOUNDARY
RESTRICTED AREA BOUNDARY
FINAL FOOTPRINT FOR TAILINGS CELLS
AND CELL 1 DISPOSAL AREA
DISCHARGE CHANNEL
(SEE SHEET REC-3)
CELL 1 DISPOSAL AREA
CELL 2
CELL 3
CELL 4A
CELL 4B
BLACK MESA RD
HW
Y

1
9
1
SEDIMENTATION BASIN
(SEE SHEET REC-3)
MILL SITE BOUNDARY
(SEE SHEET REC-2)MILL SITE
PLAN VIEW OF RECLAMATION FEATURES REC-1
WMM REC-1
C
LEGEND:
WHITE MESA MILL SITE RECLAMATION
BLANDING, UTAHx
DEC 2016
ENERGY FUELS
5605
MILL SITE BOUNDARY
RESTRICTED AREA BOUNDARY
RESTRICTED AREA BOUNDARY
CELL 1 DISPOSAL AREA
CELL 2
BLACK MESA RD
HW
Y

1
9
1
ORE PAD
MILL YARD
SEDIMENTATION BASIN
NOTES:
LEGEND:
WHITE MESA MILL SITE RECLAMATION
BLANDING, UTAHx
DEC 2016
ENERGY FUELS MILL SITE AND ORE PAD AREA GRADING PLAN REC-2
WMM REC-2
C
5605
MILL SITE BOUNDARY
SEDIMENTATION BASIN
DISCHARGE CHANNEL
CELL 2
CELL 3
RESTRICTED AREA BOUNDARY
ROCK APRON
CELL 1 DISPOSAL AREA
AREA OF CELL TO BE BREACHED
3:1 (TYP)
EXCAVATION
INTO DAKOTA
SANDSTONE
MILL SITE
0.1%
1.3%
NOTES:
LEGEND:
WHITE MESA MILL SITE RECLAMATION
BLANDING, UTAHx
DEC 2016
ENERGY FUELS SEDIMENTATION BASIN DETAIL REC-3
WMM REC-3
C
5605
APPROXIMATE LIMIT OF
ADDITIONAL INTERIM FILL
DISCHARGE CHANNEL
CELL 2
CELL 4A
CELL 4B
MILL SITE
CELL 1 DISPOSAL AREA
SEDIMENTATION
BASIN
CELL 3
RESTRICTED AREA BOUNDARY
LEGEND:
WHITE MESA MILL SITE RECLAMATION
BLANDING, UTAHx
DEC 2016
ENERGY FUELS INTERIM FILL GRADING PLAN TRC-1
WMM TRC-1
C
5605
5605
CELL 2
CELL 4A
CELL 4B
MILL SITE
CELL 1 DISPOSAL AREA
SEDIMENTATION
BASIN
CELL 3
APPROXIMATE LIMIT OF
COMPACTED COVER
DISCHARGE CHANNEL
RESTRICTED AREA BOUNDARY
LEGEND:
WHITE MESA MILL SITE RECLAMATION
BLANDING, UTAHx
DEC 2016
ENERGY FUELS COMPACTED COVER GRADING PLAN TRC-2
WMM TRC-2
C
5605
5605
0.
5
%
0.5
%
0.
5
%
-0
.
8
%
-0
.
8
%
1.1%
1.0
%
CELL 2
CELL 4A
CELL 4B
MILL SITE
SEDIMENTATION
BASIN
CELL 3
HIGH POINT
CELL 1 DISPOSAL AREA
APPROXIMATE LIMIT OF
FINAL COVER SURFACE
DISCHARGE CHANNEL GR
A
D
E

B
R
E
A
K
RESTRICTED AREA BOUNDARY
LEGEND:
WHITE MESA MILL SITE RECLAMATION
BLANDING, UTAHx
DEC 2016
ENERGY FUELS FINAL COVER SURFACE LAYOUT TRC-3
WMM TRC-3
C
5605
5605
RESTRICTED AREA BOUNDARY
RESTRICTED AREA BOUNDARY
1.1
%
0.
5
%
0.5
%
0.5
%
0.8
%
0.8
%
1
0.8-1.0% SLOPES: TOPSOIL MIXED
WITH 25% 1-INCH MINUS GRAVEL
FLOW PATH ABOVE LONGEST
5H:1V SIDE SLOPE IN CELL 4A LONGEST FLOW PATH
ACROSS CELLS 2, 3 AND 4A
5H:1V SLOPES: ROCK (D50 = 5.3 INCHES)
WITH FILTER LAYER BETWEEN EROSION
PROTECTION AND RANDOM FILL
0.1%
SLOPES: TOPSOIL
AND VEGETATION
DISCHARGE CHANNEL
BEDROCK
CELL 2
CELL 3
CELL 4A
MILL SITE
BLACK MESA RD
HW
Y

1
9
1
CELL 1 DISPOSAL AREA
SEDIMENTATION BASIN
HIGH POINT
ROCK APRON B
1 ROCK APRON C
5H:1V SLOPES: D50 = 5.3
INCHES WITH FILTER
LAYER BETWEEN EROSION
PROTECTION AND
GROWTH MEDIUM
GR
A
D
E
BR
E
A
K
LEGEND:
WHITE MESA MILL SITE RECLAMATION
BLANDING, UTAHx
DEC 2016
ENERGY FUELS RECLAMATION COVER EROSION PROTECTION TRC-4
WMM TRC-4
C
5605
0.5% SLOPES: TOPSOIL
AND VEGETATION
1.0% SLOPES: TOPSOIL MIXED
WITH 25% 1-INCH MINUS GRAVEL
1ROCK APRON A
NON-ACCUMULATING SIDE
SLOPES: ROCK (D50 = 1.7 INCHES)
(NO FILTER LAYER REQUIRED)
5605
EL
E
V
A
T
I
O
N
,

F
E
E
T
EL
E
V
A
T
I
O
N
,

F
E
E
T
DISTANCE, FEET
5560
5580
5600
5620
5550
5560
5580
5600
5620
0 100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400 1500
BOTTOM OF CELL FROM DESIGN DRAWINGS
EXISTING SURFACE FROM 2012 LIDAR SURVEY
FINAL COVER SURFACE
-1%
CELL 4B CELL 3
(SEE SHEET TRC-6)
-1%
MAXIMUM PERMITTED TAILINGS SURFACE
MAXIMUM PERMITTED TAILINGS ELEVATION AT 5600.0'
MAXIMUM PERMITTED TAILINGS ELEVATION AT 5610.0'
1 5
9.5' (MIN)
9.5' (MIN)
5
3
6
EL
E
V
A
T
I
O
N
,

F
E
E
T
EL
E
V
A
T
I
O
N
,

F
E
E
T
DISTANCE, FEET
5580
5600
5620
5560
5580
5600
5620
0 100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400 1500
FINAL COVER SURFACE
-1%
CELL 4A
-1%
9.5' (MIN)
3
5
MAXIMUM PERMITTED TAILINGS ELEVATION AT 5600.0'EXISTING SURFACE FROM 2012 LIDAR SURVEYMAXIMUM PERMITTED TAILINGS SURFACE
MAXIMUM PERMITTED TAILINGS ELEVATION AT 5610.0'
6
1
5
CELL 3
(SEE SHEET TRC-6)
EXISTING SURFACE FROM 2007 LIDAR SURVEY
9.5' (MIN)
COVER OVER CELL 4A & 4B CROSS SECTIONS TRC-5
WMM TRC-5
C
A TAILINGS COVER
0
0
SCALE IN FEET
VERT
HORZ 50 100
10 20
B TAILINGS COVER
0
0 SCALE IN FEETVERT
HORZ 50 100
10 20
VERTICAL EXAGGERATION = 5X
VERTICAL EXAGGERATION = 5X
LEGEND:
WHITE MESA MILL SITE RECLAMATION
BLANDING, UTAHx
DEC 2016
ENERGY FUELS
EL
E
V
A
T
I
O
N
,

F
E
E
T
EL
E
V
A
T
I
O
N
,

F
E
E
T
DISTANCE, FEET
5580
5600
5620
5640
5560
5580
5600
5620
5640
1300 1400 1500 1600 1700 1800 1900 2000 2100 2200 2300 2400 2500
BOTTOM OF CELL FROM AS-BUILT DRAWINGS
FINAL COVER SURFACE
-0.5%
CELL 3 CELL 2 (SEE SHEET TRC-7)CELL 4B (SEE SHEET TRC-5)
10' (MIN)
EXISTING SURFACE FROM 2012 LIDAR SURVEY
MAXIMUM PERMITTED TAILINGS ELEVATION AT 5613.5'MAXIMUM PERMITTED TAILINGS ELEVATION AT 5608.5'
9.5' (MIN)
6
7
EL
E
V
A
T
I
O
N
,

F
E
E
T
EL
E
V
A
T
I
O
N
,

F
E
E
T
DISTANCE, FEET
5580
5600
5620
5640
5570
5580
5600
5620
5640
1300 1400 1500 1600 1700 1800 1900 2000 2100 2200 2300 2400
-0.5%
BOTTOM OF CELL FROM AS-BUILT DRAWINGS
FINAL COVER SURFACE
CELL 3 CELL 2 (SEE SHEET TRC-7)CELL 4A (SEE SHEET TRC-5)
10' (MIN)
6
7
EXISTING SURFACE FROM 2012 LIDAR SURVEY
MAXIMUM PERMITTED TAILINGS ELEVATION AT 5613.5'MAXIMUM PERMITTED TAILINGS ELEVATION AT 5608.5'
9.5' (MIN)
WHITE MESA MILL SITE RECLAMATION
BLANDING, UTAHx
DEC 2016
ENERGY FUELS COVER OVER CELL 3 CROSS SECTIONS TRC-6
WMM TRC-5
C
A TAILINGS COVER
0
0
SCALE IN FEET
VERT
HORZ 50 100
10 20
B TAILINGS COVER
0
0 SCALE IN FEETVERT
HORZ 50 100
10 20
VERTICAL EXAGGERATION = 5X
VERTICAL EXAGGERATION = 5X
LEGEND:
EL
E
V
A
T
I
O
N
,

F
E
E
T
EL
E
V
A
T
I
O
N
,

F
E
E
T
DISTANCE, FEET
5580
5600
5620
5640
5570
5580
5600
5620
5640
2300 2400 2500 2600 2700 2800 2900 3000 3100 3200 3300 3400
-0.5%-0.5%
BOTTOM OF CELL FROM AS-BUILT DRAWINGS
FINAL COVER SURFACE
CELL 2 CELL 1CELL 3 (SEE SHEET TRC-6)
-1.0%
10.5' (MIN)
15
EXISTING SURFACE FROM 2012 LIDAR SURVEYMAXIMUM PERMITTED TAILINGS
ELEVATION AT 5613.5'
MAXIMUM PERMITTED TAILINGS ELEVATION AT 5615.0'
MILL DEBRIS /
CONTAMINATED
SOILS
9.5' (MIN)
4
7
EL
E
V
A
T
I
O
N
,

F
E
E
T
EL
E
V
A
T
I
O
N
,

F
E
E
T
DISTANCE, FEET
5580
5600
5620
5640
5570
5580
5600
5620
5640
2200 2300 2400 2500 2600 2700 2800 2900 3000 3100 3200 3300 3400 3500 3600
-0.5%
-1.0%
-0.5%
BOTTOM OF CELL FROM AS-BUILT DRAWINGS
FINAL COVER SURFACE
CELL 2 CELL 1CELL 3 (SEE SHEET TRC-6)
7
15
EXISTING SURFACE FROM 2012 LIDAR SURVEY
10.5' (MIN)
MAXIMUM PERMITTED TAILINGS ELEVATION AT 5613.5'
MAXIMUM PERMITTED TAILINGS ELEVATION AT 5615.0'
MILL DEBRIS /
CONTAMINATED
SOILS
9.5' (MIN)
4
WHITE MESA MILL SITE RECLAMATION
BLANDING, UTAHx
DEC 2016
ENERGY FUELS COVER OVER CELL 2 CROSS SECTIONS TRC-7
WMM TRC-5
C
A TAILINGS COVER
0
0
SCALE IN FEET
VERT
HORZ 50 100
10 20
B TAILINGS COVER
0
0 SCALE IN FEETVERT
HORZ 50 100
10 20
VERTICAL EXAGGERATION = 5X
VERTICAL EXAGGERATION = 5X
LEGEND:
EL
E
V
A
T
I
O
N
,

F
E
E
T
EL
E
V
A
T
I
O
N
,

F
E
E
T
DISTANCE, FEET
5600
5620
5640
5660
5580
5600
5620
5640
5660
0 100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400
BOTTOM OF CELL FROM AS-BUILT DRAWINGS
-1%
FINAL COVER SURFACE
CELL 2
15
EXISTING SURFACE FROM 2012 LIDAR SURVEY
MAXIMUM PERMITTED TAILINGS ELEVATION AT 5613.5'
MAXIMUM PERMITTED TAILINGS ELEVATION AT ~5623'
(MAXIMUM PERMITTED TAILINGS ELEVATION ALONG
NORTH EDGE OF CELL 2 BETWEEN MILL SITE AND
CELL 1 RANGES FROM 5615'-5626')
CELL 3
7
10.5' (MIN)
8
10.5' (MIN)
WHITE MESA MILL SITE RECLAMATION
BLANDING, UTAHx
DEC 2016
ENERGY FUELS COVER OVER CELL 2 CROSS SECTION TRC-8
WMM TRC-5
C
C TAILINGS COVER
0
0
SCALE IN FEET
VERT
HORZ 50 100
10 20
VERTICAL EXAGGERATION = 5X
LEGEND:
TABLE 2 - ROCK APRON SCHEDULE
ROCK APRON
TYPE
APRON
RIPRAP D50
(MINIMUM)
W1 W2 DEPTH (D)
A 3.4"4.5'5.0'1'
B 10.6"13.5'13'3'
C 9.0"11.5'11'3'
TABLE 1 - RIPRAP ON SIDE SLOPES
SIDE SLOPE AREA
RIPRAP D50 FILTER
D50 THICKNESS D100 THICKNESS
EAST & WEST SIDES 1.7"6"(NOT NEEDED)-
CELL 4A & 4B SOUTHERN 5.3"8"3"6"
CELL 1 DISPOSAL AREA 5.3"8"3"6"
W1 (SEE TABLE 2)
D (SEE TABLE 2)FILTER THICKNESS 1% SLOPE
1
5 RIPRAP (SEE TABLE 1)
ELEVATION
COVER
RIPRAP THICKNESS
Wɑ (SEE TABLE 2)
RIPRAP FILTER (SEE TABLE 1)
T1
0.5'
3.5'
T2
2.5' (MIN)
EROSION PROTECTION LAYER
(TOPSOIL OR GRAVEL ADMIXTURE)
LAYER 3 - GROWTH MEDIUM
LAYER 1 - INTERIM FILL
LAYER 2 - COMPACTED COVER
TAILINGS
VEGETATION
RIPRAP
THICKNESS
VARIES
FILTER THICKNESS
1
5
1
3
EXISTING
BERM
RANDOM FILL
RIPRAP = (SEE TABLE 1)
RIPRAP FILTER (SEE TABLE 1)
RECLAMATION COVER DETAILS (SHEET 1 OF 2)TRC-9
WMM TRC-9
C
WHITE MESA MILL SITE RECLAMATION
BLANDING, UTAH
DEC 2016
ENERGY FUELS
1 ROCK APRON AT BASE OF TOE CELL OUTSLOPES
2 COVER DETAIL FOR TOP SURFACE OF TAILINGS
-
3 COVER DETAIL FOR SIDE SLOPES
-
CELLS 2-4 AND CELL 1 DISPOSAL AREA
COVER THICKNESS TABLE
CELL COVER
(T1)
RADON
ATTENUATION
LAYER (T2)
1 9.5'3.0'
2 10.5'4.0'
3 10.0'3.5'
4A & 4B 9.5'3.0'
LEGEND:
NOT TO SCALE
12" CLAY LINER
BERM
CELL 2 CELL 1 DISPOSAL AREA
0.5%1.0%
2
MILL DEBRIS / CONTAMINATED SOILS
1
5
1
3
1
5
1
RANDOM FILL
3
1
8' MIN
3'
MINIMUM 10'
CELL 3CELL 4
BERMTAILINGS
TAILINGS
0.8%
MAXIMUM PERMITTED
TAILINGS ELEV AT 5608.5'
0.5%
CL
CELL 2CELL 3
BERM TAILINGSTAILINGS
MAXIMUM PERMITTED
TAILINGS ELEV AT 5613.5'
0.5%0.5%
CL
BERM
MAXIMUM PERMITTED
TAILINGS ELEV AT 5600.0'
TAILINGS
5
1
CELL 4
0.8%
RANDOM FILL
1
MAXIMUM PERMITTED TAILINGS
ELEVATION VARIES
5
1
CELL 2
1%
TAILINGS
RECLAMATION COVER DETAILS (SHEET 2 OF 2)TRC-10
WMM TRC-10
C
WHITE MESA MILL SITE RECLAMATION
BLANDING, UTAH
DEC 2016
ENERGY FUELS
4 COVER DETAIL FOR CELL 1 DISPOSAL AREA
5 COVER DETAIL OVER BERM - SOUTHERN EDGE CELL 4 6 COVER DETAIL OVER BERM - BETWEEN CELL 4 AND CELL 3
7 COVER DETAIL OVER BERM - BETWEEN CELL 3 AND CELL 2
0 5 10 0 5 10
0 5 10
0 10 20
6
77
LEGEND:
8 COVER DETAIL OVER BERM - NORTHEASTERN EDGE OF CELL 2
0 5 10
MINIMUM 10'
ROCK APRON
MINIMUM 10'
ATTACHMENT A
TECHNICAL SPECIFICATIONS FOR
RECLAMATION OF WHITE MESA MILL FACILITY
BLANDING, UTAH
Page A-i
Revision 5.1B
Energy Fuels Resources (USA) Inc.
White Mesa Mill Reclamation Plan
February 2018
TABLE OF CONTENTS

1.0 SPECIAL PROVISIONS .................................................................................................. 1
1.1 Scope of Document .......................................................................................................... 1
1.2 Definitions and Roles ....................................................................................................... 1
1.3 Scope of Work .................................................................................................................. 4
1.4 Applicable Regulations and Standards ............................................................................. 5
1.5 Permits .............................................................................................................................. 5 1.6 Inspection and Quality Assurance .................................................................................... 5
1.7 Construction Documentation ........................................................................................... 7
1.8 Design Modifications ....................................................................................................... 8
1.9 Environmental Requirements ........................................................................................... 8
1.10 Water Management .......................................................................................................... 8 1.11 Historical and Archeological Considerations ................................................................... 9
1.12 Health and Safety Requirements ...................................................................................... 9
1.13 Personnel Monitoring ....................................................................................................... 9
1.14 Environmental Monitoring ............................................................................................. 10
2.0 SITE CONDITIONS ........................................................................................................ 11
2.1 Site Location .................................................................................................................. 11
2.2 Climate and Geology ...................................................................................................... 11
2.3 Past Operations ............................................................................................................... 11
2.4 Facilities Demolition ...................................................................................................... 12
2.5 Disposed Materials ......................................................................................................... 12 2.6 Construction Materials ................................................................................................... 12
2.6.1 Liner Materials ........................................................................................................ 13
2.6.2 Random Fill ............................................................................................................ 13
2.6.3 Topsoil .................................................................................................................... 13
2.6.4 Topsoil-Gravel Admixture ...................................................................................... 13 2.6.5 Riprap ...................................................................................................................... 13
2.6.6 Filter Materials ........................................................................................................ 13
2.6.7 Granular Materials .................................................................................................. 14
2.7 Staging and Stockpile Areas .......................................................................................... 14
2.8 Access and Security ....................................................................................................... 14 2.9 Utilities ........................................................................................................................... 14
2.10 Sanitation Facilities ........................................................................................................ 14
3.0 WORK AREA PREPARATION .................................................................................... 15
3.1 General ........................................................................................................................... 15
3.2 Water Management ........................................................................................................ 15 3.3 Cell Construction............................................................................................................ 15
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3.4 Soil Borrow Areas .......................................................................................................... 16
3.5 Clearing and Stripping ................................................................................................... 16
3.5.1 Clearing ................................................................................................................... 16
3.5.2 Stripping .................................................................................................................. 17
4.0 CELL 1 DISPOSAL AREA BASE CONSTRUCTION ............................................... 18
4.1 General ........................................................................................................................... 18
4.2 Materials Description ..................................................................................................... 18
4.2.1 Subgrade Fill ........................................................................................................... 18
4.2.2 Clay Liner Material ................................................................................................. 18 4.3 Work Description ........................................................................................................... 18
4.3.1 Foundation Preparation ........................................................................................... 18
4.3.2 Disposal Cell Foundation Area ............................................................................... 19
4.3.3 Subgrade Fill Placement ......................................................................................... 19
4.3.4 Clay Liner Material Placement ............................................................................... 19 4.4 Performance Standards and Testing ............................................................................... 20
4.4.1 Subgrade Testing .................................................................................................... 20
4.4.2 Clay Liner Testing .................................................................................................. 21
4.4.3 Grading Tolerances ................................................................................................. 22
5.0 DISCHARGE CHANNEL GRADING .......................................................................... 23
5.1 General ........................................................................................................................... 23
5.2 Work Description ........................................................................................................... 23
5.2.1 Discharge Channel Excavation ............................................................................... 23
5.2.2 Grading Tolerances ................................................................................................. 23
6.0 MILL DECOMMISSIONING ........................................................................................ 24
6.1 Mill Buildings and Equipment ....................................................................................... 24
6.2 Mill Site and Windblown Contamination ...................................................................... 26
6.3 Scoping and Characterization Surveys ........................................................................... 27
6.3.1 Scoping and Characterization Survey for the Subsurface....................................... 28
6.3.2 Gamma Radiation to Unity Rule Correlation ......................................................... 28 6.3.3 Area Classification .................................................................................................. 34
6.3.4 Remediation ............................................................................................................ 35
6.4 Final Status Surveys ....................................................................................................... 35
6.4.1 Release Criterion ..................................................................................................... 35
6.4.2 Statistical Test ......................................................................................................... 36 6.5 Instrument Quality Assurance/Quality Control (QA/QC) ............................................. 37
6.5.1 Calibration............................................................................................................... 37
6.5.2 Source and Background Checks ............................................................................. 38
6.6 Data Quality Objectives ................................................................................................. 39
6.6.1 State the Problem .................................................................................................... 40 6.6.2 Identify the Decisions ............................................................................................. 40
6.6.3 Identify Inputs to the Decision ................................................................................ 40
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6.6.4 Define the Study Boundaries .................................................................................. 46
6.6.5 Develop the Decision Rules/Analytical Approach ................................................. 47
6.6.6 Define Acceptable Decision Errors ........................................................................ 47
6.6.7 Relative Shift and Number of Samples ................................................................... 49 6.6.8 Optimize the Design ............................................................................................... 50
6.7 Soil Sampling ................................................................................................................. 50
6.7.1 Laboratory Approval ............................................................................................... 50
6.7.2 Data Validation ....................................................................................................... 51
6.8 Employee Health and Safety .......................................................................................... 52 6.9 Environment Monitoring ................................................................................................ 52
6.10 Quality Assurance .......................................................................................................... 52
7.0 MATERIAL DISPOSAL ................................................................................................ 53
7.1 General ........................................................................................................................... 53
7.2 Materials Description ..................................................................................................... 53 7.2.1 Raffinate Crystals.................................................................................................... 53
7.2.2 Synthetic Liner ........................................................................................................ 53
7.2.3 Contaminated Soils ................................................................................................. 53
7.2.4 Mill Debris .............................................................................................................. 53
7.3 Work Description ........................................................................................................... 54 7.3.1 Raffinate Crystals.................................................................................................... 54
7.3.2 Synthetic Liner ........................................................................................................ 54
7.3.3 Contaminated Soils ................................................................................................. 54
7.3.4 Mill Debris .............................................................................................................. 55
7.3.5 Material Sizing and Preparation.............................................................................. 55 7.3.6 Incompressible Debris ............................................................................................ 55
7.3.7 Compressible Debris ............................................................................................... 56
7.3.8 Organic Debris ........................................................................................................ 56
7.3.9 Soils and Similar Materials ..................................................................................... 57
7.4 Performance Standards and Testing ............................................................................... 57 7.4.1 Material Compaction – Debris Lifts ....................................................................... 57
7.4.2 Material Compaction – Final Disposed Material Surface....................................... 58
7.4.3 Testing Frequency ................................................................................................... 58
7.4.4 Final Slope and Grades ........................................................................................... 58
8.0 COVER CONSTRUCTION ........................................................................................... 59
8.1 General ........................................................................................................................... 59
8.2 Materials Description ..................................................................................................... 59
8.2.1 Random Fill ............................................................................................................ 59
8.2.2 Organic Matter Amendment ................................................................................... 59
8.2.3 Topsoil-Gravel Admixture ...................................................................................... 59 8.2.4 Riprap ...................................................................................................................... 60
8.2.5 Filter Material ......................................................................................................... 61
8.2.6 Topsoil .................................................................................................................... 61
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8.3 Work Description ........................................................................................................... 61
8.3.1 Monitoring Interim Cover Settlement ..................................................................... 62
8.3.2 Monitoring Final Cover Settlement ........................................................................ 62
8.3.3 Monitoring Settlement Points ................................................................................. 62 8.3.4 Interim Fill Layer .................................................................................................... 63
8.3.5 Compacted Cover Layer ......................................................................................... 63
8.3.6 Growth Medium Layer ........................................................................................... 63
8.3.7 Organic Matter Amendment ................................................................................... 63
8.3.8 Erosion Protection Layer: Topsoil-Gravel Admixture ........................................... 63 8.3.9 Erosion Protection Layer: Topsoil .......................................................................... 64
8.3.10 Riprap and Filter Material Placement ..................................................................... 64
8.4 Performance Standard and Testing ................................................................................ 65
8.4.1 Compacted Cover Layer Testing ............................................................................ 65
8.4.2 Growth Medium Layer Testing .............................................................................. 66 8.4.3 Topsoil-Gravel Admixture Testing ......................................................................... 67
8.4.4 Riprap Testing ......................................................................................................... 67
8.4.5 Filter Material Testing ............................................................................................ 67
8.4.6 Rock Durability Testing .......................................................................................... 68
8.5 Surface Slopes and Grades ............................................................................................. 68 8.6 Grading Tolerances ........................................................................................................ 68
9.0 REVEGETATION ........................................................................................................... 70
9.1 General ........................................................................................................................... 70
9.2 Materials Description ..................................................................................................... 70
9.2.1 Soil Amendments .................................................................................................... 70 9.2.2 Seed Mix ................................................................................................................. 70
9.2.3 Erosion Control Materials ....................................................................................... 71
9.3 Work Description ........................................................................................................... 72
9.4 Soil Amendment Application ......................................................................................... 72
9.5 Growth Zone Preparation ............................................................................................... 72 9.6 Seed Application ............................................................................................................ 72
9.7 Erosion Control Material Application ............................................................................ 73
9.8 Performance Standard and Testing ................................................................................ 74
9.8.1 Seeding Rates .......................................................................................................... 74
9.8.2 Erosion Control ....................................................................................................... 74 9.8.3 Weed Control .......................................................................................................... 74
9.8.4 Vegetation Establishment Performance .................................................................. 78
10.0 REFERENCES ................................................................................................................. 81
1.0 INTRODUCTION.............................................................................................................. 2
2.0 QC CONTROL CHARTING ........................................................................................... 2
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1.0 SPECIAL PROVISIONS
1.1 Scope of Document
The following technical specifications have been prepared for reclamation and decommissioning
of the Energy Fuels Resources (USA) Inc. (”EFRI”), White Mesa Uranium Mill Facility (“Mill”)
in Blanding, Utah. These technical specifications have been prepared for review and approval by
the Utah Department of Environment Quality (“DEQ”), Division of Waste Management and
Radiation Control (“DWMRC”) and are submitted as an attachment to the Reclamation Plan. The
design drawings for reclamation are attached and are designated as the “Drawings”. The
Construction Quality Assurance/Quality Control Plan (“CQA/QC Plan”) referenced in this
document is provided as Attachment B to the Reclamation Plan. The Technical Specifications
have been written assuming tailings management Cells 2, 3, 4A, and 4B will receive tailings to the
maximum permitted tailings elevations. Cell 2 is full and partially reclaimed. Cell 3 was used for
tailings storage, but is currently only receiving mill waste. Cell 3 is partially full and partially
reclaimed. Cell 4A is the only cell currently receiving tailings and is partially full. Cell 4B is used
for evaporation of process solutions and has not been used for storage of tailings. The Technical
Specifications have been written assuming Cell 4B will be used in the future for tailings storage.
These technical specifications have been written assuming (a) a contractor will conduct tailings
impoundment reclamation under contract with EFRI and under EFRI’s direction (b) the work
quality will be checked with independent (third-party) construction quality assurance, and (c) the
tailings management system comprised of Cells 2, 3, 4A, and 4B will receive tailings to the
maximum permitted tailings elevations.
1.2 Definitions and Roles
Construction Quality Assurance (CQA) – A planned and systematic pattern of means and
actions designed to assure adequate confidence that the materials or services meet contractual and
regulatory requirements and will perform satisfactorily in service. CQA refers to means and
actions employed by the involved parties to assure conformity of the project work with the
CQA/QC Plan, the Drawings, and the Technical Specifications.
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Construction Quality Control (CQC) – Actions which provide a means to measure and regulate
the characteristics of an item or service in relation to contractual and regulatory requirements.
CQC refers to those actions taken by the Contractor, technicians, or other involved parties to verify
that the materials and the workmanship meet the requirements of the CQA/QC Plan, the Drawings,
and the Technical Specifications.
Technical Specifications – The document that prescribes the requirements and standards for the
specific elements of the reclamation. The Technical Specifications will be prepared in final form
prior to commencement of reclamation activities.
Drawings – The detailed project drawings to be used in conjunction with the Technical
Specifications. The Drawings will be prepared in final form as construction drawings prior to
reclamation.
Construction Project – The total authorized/approved reclamation project that requires several
construction segments to complete.
Construction Segment – A portion of the total construction project involving a specific area or
type of work. Several construction segments will likely take place simultaneously during
reclamation.
Construction Task – A basic construction feature of a construction segment involving a specific
construction activity.
ASTM Standards – The latest versions of the American Society for Testing and Materials
specifications, procedures and methods.
For the Technical Specifications, EFRI is referred to as the Owner, with overall responsibility for
closure, as well as site reclamation.
The on-site Construction Manager is responsible for the conduct, direction and supervision of
all reclamation activities as detailed in the Drawings and Technical Specifications.
The Design Engineer is responsible for the design of the various elements of the reclamation
project and for preparing the Drawings and Technical Specifications.
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The Contractor is defined as the group (or groups) selected by the Owner and responsible for
conducting the work tasks outlined in Section 1.3 under the direction of, and under contract with
the Owner.
The Surveyor is a party, independent from the Owner or Contractor, who is responsible for
surveying, documenting, and verifying the location of all significant components of the work.
The CQA/QC Consultant is a party, independent from the Owner or Contractor, who is
responsible for observing, testing, and documenting the various activities comprising the
Reclamation Project in accordance with the CQA/QC Plan, the Technical Specifications and the
Drawings.
The CQA Officer will be responsible for overall implementation and management of the
CQA/QC Plan for the reclamation project.
The CQA Site Manager will be appointed by the CQA Consultant to provide day-to-day, on-site
oversight of the CQA/CQC activities. The CQA Site Manager could be an employee of the Owner
or a third-party consultant.
The CQA Consultant will utilize various QC Technicians to assist the on-site CQA Site Manager
to perform specific tasks throughout the project to verify the adequacy of construction materials
and procedures.
The Document Control Officer will be appointed by the Construction Manager to assist with
managing the various documents that will be produced throughout the project.
The CQA Laboratory is a party, independent from the Owner and Contractor, responsible for
conducting tests of soils and other project materials in accordance with ASTM and other applicable
standards in either an on-site or off-site laboratory.
The DWMRC Project Manager will represent the DWMRC's interests in the reclamation project.
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The CQA/QC Plan (Attachment B of the Reclamation Plan) contains more detailed descriptions
of the project roles.
1.3 Scope of Work
The work outlined in these Technical Specifications consists of execution of the following tasks
associated with reclamation of the tailings management system and associated site reclamation.
• Preparation of borrow areas for material excavation by removal of vegetation; and stripping, salvaging, and stockpiling of topsoil;
• Preparation of material staging and stockpile areas by removal of vegetation; stripping,
salvaging, and stockpiling of topsoil; and providing for storm water diversion and internal
water collection;
• Removal of raffinates and PVC liner materials from Cell 1 and placement within the last
active tailings cell;
• Construction of a clay-lined disposal cell (Cell 1 Disposal Area) along the Cell 1
containment dike for disposal of mill demolition debris and contaminated soils;
• Construction of a sedimentation basin in the location of Cell 1 (does not include the Cell 1
Disposal Area);
• Excavation of process area structure foundations, paved areas, concrete pads and roadways, and placement of these materials in the disposal cell;
• Excavation of contaminated subsoils from the process area, and placement in the last active
tailings cell or the Cell 1 Disposal Area.
• Construction of the cover system over the tailings cells, with placement of topsoil and/or topsoil-gravel admixture over the disposal cell cover surface.
• Regrading and placement of topsoil over excavated areas, stockpile and staging areas, and
other disturbed areas of the site.
• Establishment of vegetation on the disposal cell surface and surrounding reclaimed areas on site.
The Technical Specifications have been written assuming tailings management Cells 2, 3, 4A, and
4B will receive tailings to the maximum permitted tailings elevations. Cell 2 is full and partially
reclaimed. Cell 3 was used for tailings storage, but is currently only receiving mill waste. Cell 3
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is partially full and partially reclaimed. Cell 4A is the only cell currently receiving tailings and is
partially full. Cell 4B is used for evaporation of process solutions and has not been used for storage
of tailings. The Technical Specifications have been written assuming Cell 4B will be used in the
future for tailings storage.
Work not included in these Technical Specifications consists of salvage of facility equipment,
demolition of facility structures, groundwater monitoring and remediation, and post-reclamation
performance monitoring.
1.4 Applicable Regulations and Standards
The work will be conducted to conform with applicable Federal, State, and County environmental
and safety regulations, as well as applicable conditions in the Owner’s radioactive materials
license. Geotechnical testing procedures will follow applicable ASTM standards, as documented
in the most current edition of standards in force at the start of work. Personnel safety procedures
and monitoring will be conducted in accordance with the Owner’s Radiation Protection Manual
for Reclamation Activities and as directed by the Radiation Safety Officer (“RSO”).
1.5 Permits
The work will be conducted under the Owner’s existing radioactive materials license and State of
Utah Air Quality Approval Order (DAQE-AN0112050018-11, issue date March 3, 2011). The
Contractor will be responsible for applying for, and obtaining (permit fees included), all other
necessary permits required to complete the work outlined in these Technical Specifications.
1.6 Inspection and Quality Assurance
In general, the QA/QC Plan details the Owner’s organizational structure and responsibilities,
qualifications of personnel, operating procedures and instructions, record keeping and document
control, and quality control in the sampling procedure and outside laboratory. The Plan will adopt
the existing quality assurance/quality control procedures utilized in compliance with the existing
license.
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The RSO (and approved assistants as needed) will conduct on-site training, and full-time personnel
monitoring, and inspection of construction activities while the site reclamation work is in progress.
The RSO (and assistants) will be independent representatives of and appointed by the Owner. The
responsibilities and duties of the RSO shall be as outlined in the Owner’s Protection Manual for
Reclamation.
The CQA Site Manager (and approved assistants as needed) will provide on-site inspection of all
construction activities and quality assurance testing outlined in these Technical Specifications and
the CQA/QC Plan while the construction work is in progress. The CQA Site Manager and
assistants will be independent representatives of and appointed by the Owner. The inspection and
CQA testing conducted by the CQA Site Manager will be under the supervision of the Reclamation
Project Manager. Inspection and CQA testing will include the tasks described in the CQA/QC
Plan and listed below.
a. Observation of construction practices and procedures for conformance with the
Technical Specifications.
b. Testing material characteristics to ensure that earthen materials used in the construction
conform to the requirements in the Technical Specifications.
c. Documentation of construction activities, test locations, samples, and test results.
d. Notification of results from quality assurance testing to the Owner and the Contractor.
e. Documentation of field design modifications or approved construction work that
deviates from the Technical Specifications.
The CQA Site Manager will record the documentation outlined above on a daily basis. The
Reclamation Project Manager will approve deviations from the Technical Specifications (if
necessary), with notification to the Owner and DWMRC or other appropriate Utah state regulatory
agency personnel. Quality control procedures have been developed for reclamation and presented
in Attachment B of this Reclamation Plan. Procedures will be used for testing, sampling, and
inspection functions.
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1.7 Construction Documentation
During construction, the CQA Site Manager will record documentation of construction inspection
work on a daily basis. Documentation will include the following items.
a. Work performed by the Contractor.
b. CQA testing and surveying work conducted.
c. Discussions with the Owner and the Contractor.
d. Key decisions, important communications, or design modifications.
e. General comments including: weather conditions, work area surface conditions, and
visitors to the site.
All earthwork test results will be documented on a daily basis, with a copy of the results given to
the CQA Site Manager by the end of the following working day after the testing.
The CQA Site Manager or his representative will take photographs of key construction activities
and critical items for documentation.
A final construction completion report, documenting the as-built conditions of the tailings
impoundment reclamation components will be submitted to DWMRC at the end of construction.
This report will include the following items.
a. All design modifications or changes to the Technical Specifications that were made during
construction.
b. An as-built layout of the facility prior to, and at the completion of reclamation construction.
c. An as-built layout of other reclaimed areas of the site.
d. Documentation of soil cleanup verification work (soil radiation survey and soil sampling and analyses) in areas of contaminated soil excavation.
e. Documentation of the revegetation work (soil amendments, seed mix, and vegetation
establishment).
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1.8 Design Modifications
Design modifications (due to unanticipated site conditions or field improvements to the design)
will be made following the protocol outlined below.
a. Communication of modification with the Reclamation Project Manager.
b. Submittal to, and review by, DWMRC for approval prior to implementation.
c. Documentation of modification(s) in the construction completion report.
1.9 Environmental Requirements
The Contractor shall store materials, confine equipment, and maintain construction operations
according to applicable laws, ordinances, or permits for the project site. Fuel, lubricating oils, and
chemicals shall be stored and dispensed in such a manner as to prevent or contain spills and prevent
said liquids from reaching local streams or groundwater. If quantities of fuel, lubricating oils or
chemicals exceed the threshold quantities specified in Utah regulations, the Contractor shall
prepare and follow a Spill Prevention Control and Countermeasures Plan (SPCCP), as prescribed
in applicable Utah regulations. The Owner will approve said plan. Used lubricating oils shall be
disposed of or recycled at an appropriate facility. The Contractor shall be responsible for disposal
of all waste associated with the project work.
1.10 Water Management
The Contractor shall construct and maintain all temporary diversion and protective works required
to divert storm water from around work areas. The Contractor shall furnish, install, maintain, and
operate all equipment required to keep excavations and other work areas free from water in order
to construct the facilities as specified.
Water required by the Contractor for dust suppression or soil-moisture conditioning will be
obtained from the Owner.
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1.11 Historical and Archeological Considerations
The Contractor shall immediately notify the Owner if materials of potential historical or
archeological significance are discovered or uncovered. The Owner may stop work in a specific
area until the materials can be evaluated for historical, cultural, or archeological significance. All
materials determined to be of significance will be protected during the work, as determined by
appropriate regulatory agencies, including removal or adjustment of work areas.
1.12 Health and Safety Requirements
Work outlined in these Technical Specifications will be conducted under the Owner’s Radiation
Protection Manual for Reclamation Activities, as directed by the RSO.
The Contractor shall suspend construction or demolition operations or implement necessary
precautions whenever (in the opinion of the Reclamation Project Manager or RSO) unsatisfactory
conditions exist due to rain, snow, wind, cold temperatures, excessive water, or unacceptable
traction or bearing capacity conditions. The CQA Site Manager, Reclamation Project Manager,
and RSO each have the authority to stop Contractor work if unsafe conditions or deviations from
Technical Specifications are observed.
1.13 Personnel Monitoring
Programs currently in place for monitoring of exposures to employees will remain in effect
throughout the time period during which tailings cell reclamation, mill decommissioning and clean
up of windblown contamination are conducted. These programs will include personnel monitoring
and the ongoing bioassay program. Access control will be maintained at the Restricted Area
boundary to ensure employees and equipment are released from the site in accordance with the
current License conditions. In general, no changes to the existing programs are expected and
reclamation activities are not expected to increase exposure potential beyond the current levels.
The Owner will assign an employee to act as RSO responsible for assuring site workers comply
with the Owner’s Radiation Protection Manual for Reclamation Activities and the requirements
set forth in the Owner’s radioactive materials license.
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1.14 Environmental Monitoring
Existing environmental monitoring programs will continue during the time period in which
reclamation and decommissioning is conducted as applicable. This includes monitoring of surface
and groundwater, airborne particulates, radon, soils and vegetation, according to the existing
License conditions as applicable. As site features are reclaimed, monitoring programs for those
features may cease. Any changes will be approved by DWMRC prior to the cessation of
monitoring. In general, no changes to the extent of the existing programs are expected because
reclamation activities are not expected to increase exposure potential beyond the current levels.
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2.0 SITE CONDITIONS
2.1 Site Location
The White Mesa Mill site is located about 6 miles south of Blanding, Utah in San Juan County,
along County Road 191.
2.2 Climate and Geology
The climate of southeastern Utah is classified as dry to arid continental. Although varying
somewhat with elevation and terrain, the climate in the vicinity of the Mill can be considered as
semi-arid with normal annual precipitation of about 13.3 inches. The mean annual relative
humidity is about 44 percent and is normally highest in January and lowest in July. The average
annual Class A pan evaporation rate is 68 inches (NOAA, 1977), with the largest evaporation rate
typically occurring in July. (Denison, 2009)
The Mill is located within the Blanding Basin of the Colorado Plateau physiographic province.
The average elevation of the site is approximately 5,600 ft (1,707 m) above mean sea level (amsl).
Typical of large portions of the Colorado Plateau province, the rocks underlying the site are
relatively undeformed. The site is underlain by unconsolidated alluvium and indurated
sedimentary rocks consisting primarily of sandstone and shale. The alluvial materials consist
mostly of aeolian silts and fine-grained aeolian sands with a thickness varying from a few feet to
as much as 25 to 30 ft (7.6 to 9.1 m) across the site. The alluvium is underlain by the Dakota
Sandstone and Burro Canyon Formation, which are sandstones having total thicknesses ranging
from approximately 100 to 140 ft (31 to 43 m). (Denison, 2009)
2.3 Past Operations
The mill is a uranium/vanadium mill that was developed in the late 1970's by Energy Fuels
Nuclear, Inc. (“EFN”) as an outlet for the many small mines located in the Colorado Plateau and
for the possibility of milling Arizona strip ores. Construction on the tailings area began on August
1, 1978. The Mill was operated by EFN from the initial start-up date of May 6, 1980 until the
cessation of operations in 1983 and then intermittently under different ownership through present-
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day. Denison (then named International Uranium (USA) Corporation), and its affiliates, purchased
the assets of EFN in May 1997. Energy Fuels Resources (USA), Inc. purchased the facility in
2012 and is the current owner.
2.4 Facilities Demolition
Demolition of equipment, structures, and associated facilities at the Mill site will be conducted
according to applicable conditions of the radioactive materials license, the demolition plan for the
facility, and the Owner’s Radiation Protection Manual for Reclamation Activities. Facilities
demolition is not included in this document.
2.5 Disposed Materials
Materials to be placed in the disposal and tailings cells consists of process waste materials,
structural debris, underlying liner materials, and subsoils from planned site cleanup activities.
Additional detail on each material type is outlined later in the Technical Specifications. The four
major types of materials are outlined below:
• Raffinate Crystals – located in Cell 1
• Synthetic Liner – PVC liner from Cell 1
• Contaminated Soils - soils located in and around the Mill site with concentrations
exceeding prescribed unity rule concentrations (see Section 6)
• Mill Debris – all equipment and structures from the demolition of the mill
2.6 Construction Materials
Construction materials for the disposal cell liner, cover system, and for erosion protection of the
cover and discharge channel will include soils and aggregates from on-site and off-site sources.
These materials are outlined below.
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2.6.1 Liner Materials
The disposal cell will be constructed, prior to the placement of contaminated soils and mill
demolition debris, with a compacted clay liner. The soils will be obtained from suitable materials
stockpiled on site during cell construction.
2.6.2 Random Fill
Random fill will be used within the disposal cell and tailings cells, placed on and around mill
material and debris and placed for the components of the cover system. Fill materials will be
obtained from soils stockpiled on site.
2.6.3 Topsoil
Topsoil for the surface of the disposal cell and surrounding areas to be revegetated will be obtained
from on-site stockpile areas.
2.6.4 Topsoil-Gravel Admixture
A mixture of gravel and topsoil will be used in select areas on the cover. The sources of rock are
nearby commercial sources of alluvial gravel. Topsoil-gravel admixture shall meet the particle-
size distribution requirements outlined in Section 8.
2.6.5 Riprap
A layer of riprap will be placed on the side slopes and on the perimeter apron of the disposal cell
as well as within the discharge channel. The sources of riprap are nearby commercial sources of
alluvial gravel and cobbles. Riprap shall meet the particle-size distribution and durability
requirements outlined in Section 8, and shall meet requirements for rock durability outlined in
NRC (1990) and Johnson (1999, 2002).
2.6.6 Filter Materials
Filter layer materials will be obtained from an off-site local commercial source or from select on-
site borrow areas.
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2.6.7 Granular Materials
Granular materials will be used for filter material and may also be used for subsurface fill for the
cell base. These materials will be obtained from off-site commercial sources of alluvial sand and
gravel.
2.7 Staging and Stockpile Areas
Areas on site identified as staging areas or stockpile locations will be approved by the Owner.
These areas will be constructed and used in a manner consistent with the Owner’s plans for storm
water management. The Contractor shall maintain proper erosion control measures for stockpiles
and may be required to cover piles in situations where precipitation is anticipated.
2.8 Access and Security
Access to the site will be controlled at gated entrances in the existing restricted area fencing. All
gated entrances and security for the Mill property will be maintained by the Owner.
2.9 Utilities
Utilities on site will be maintained by the Owner outside of work areas (areas to be demolished or
reclaimed). Utilities inside of work areas will be provided and maintained by the Contractor.
2.10 Sanitation Facilities
The Contractor, in accordance with the Owner’s Radiation Protection Manual for Reclamation
Activities, will maintain sanitation facilities required during construction.

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3.0 WORK AREA PREPARATION
3.1 General
This section describes the preparation of site areas for reclamation. This work will be conducted
according to applicable sections of the Owner’s Radiation Protection Manual for Reclamation
Activities.
3.2 Water Management
Preparation for work in the site area will include water management tasks outlined below.
a. Removal of raffinate crystals from Cell 1.
Breaching of the Cell 1 dike for constructing the cell as a sedimentation basin. Re-routing runoff
from the mill area and areas immediately north of the cell into the sedimentation basin for
discharge onto the natural ground via the channel to be located at the southwest corner of the basin.
Diversion of clean area storm water runoff from work areas (where facilities demolition and
material excavation will take place) and from the disposal cell footprint area.
Collection of storm water runoff from within the work areas and the disposal cell footprint for
treatment and permitted discharge, or for disposed material compaction or dust control. The
planned storage location for this affected storm water is the sedimentation pond.
Isolation of water used for processing operations associated with reclamation from storm water
runoff. Water from processing operations or other contaminated water will not be used for disposal
cell construction.
3.3 Cell Construction
A clay-lined disposal area will be constructed within Cell 1 (Cell 1 Disposal Area) for permanent
disposal of contaminated material and debris from Mill site decommissioning. The disposal area
will be located immediately north of the existing dike between Cells 1 and 2. The disposal
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footprint area will be lined with a compacted clay liner prior to placement of contaminated
materials and installation of the final reclamation cover. If there is not sufficient debris, rubble
and contaminated soil to fill the Cell 1 Disposal Area as designed, the footprint of the Cell 1
Disposal Area can be reduced to decrease the horizontal dimension extending out from Cell 2 and
the lateral extent of the disposed materials, to be closer to the base of the Cell 2 dike. If a design
modification is required for the Cell 1 Disposal Area, it will be submitted to DWMRC for review
and approval, and these Technical Specifications will be revised accordingly.
3.4 Soil Borrow Areas
Fill cover and liner materials for the disposal cell will be excavated from suitable materials
stockpiled in identified borrow areas on site. Specific soil borrow areas will be selected based on
haul distance to the disposal cell, ease of excavation of cover material, geotechnical characteristics,
uniformity of the borrow material, and acceptable radiological and geochemical characteristics.
Borrow area preparation will consist of setup for storm water management (Section 3.2) and
clearing and stripping (Section 3.5).
3.5 Clearing and Stripping
In work areas with vegetation, preparation work will include tasks outlined below.
3.5.1 Clearing
Clearing of vegetation and grubbing of roots will be in identified work areas. Clearing and
grubbing shall not extend beyond 20 feet from the edge of the work area, unless as shown on the
Drawings or as approved by the Reclamation Project Manager.
Vegetation from clearing and grubbing may be shredded or chipped to form mulch. Alternative
methods of on-site or off-site disposal or burning of stripped vegetation shall be conducted only
as approved by the Reclamation Project Manager.
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3.5.2 Stripping
Stripping of salvageable topsoil (if present) shall be done within the entire work area. Stripping
of topsoil shall not extend beyond 10 feet from the edge of the work area, unless approved by the
Reclamation Project Manager. The depth of stripping of reclamation soil shall be based on the
presence of suitable topsoil and approved by the Reclamation Project Manager. Water shall be
applied to the areas of excavation and soil salvage to minimize dust generation.
Topsoil shall be stockpiled in approved areas. The final stockpile surface shall be graded and
smoothed to minimize erosion and facilitate interim revegetation of the stockpile surfaces.
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4.0 CELL 1 DISPOSAL AREA BASE CONSTRUCTION
4.1 General
This section outlines work associated with construction of the disposal cell base (Cell 1 Disposal
Area) for receipt of materials (as described in Section 7.0) within Cell 1. The Cell 1 Disposal Area
will be constructed as shown on the Drawings and outlined in these Technical Specifications.
4.2 Materials Description
4.2.1 Subgrade Fill
The disposal cell footprint is likely to have an irregular surface from contaminated material
excavation. Low areas of the excavated surface shall be filled with subgrade fill to form a smooth,
competent foundation for clay liner construction (shown on the Drawings).
Subgrade fill will consist of off-site granular materials, or soils and weathered sedimentary rock
from approved on-site excavation areas. Subgrade fill shall have a maximum size of 6 inches and
shall be free from roots, branches, rubbish, and process area debris.
4.2.2 Clay Liner Material
Clay liner material shall have a maximum particle size of one inch, and shall be free from roots,
branches, rubbish, and process area debris. Clay liner material shall have a minimum of 40 percent
passing the No. 200 sieve and a minimum plasticity index (PI) of 15 percent.
4.3 Work Description
4.3.1 Foundation Preparation
The footprint of the disposal cell shall form a competent foundation for clay liner and cover
construction. The surface of the disposal cell footprint shall be filled with subgrade fill (where
required) in low areas to form a smooth, competent foundation for clay liner and cover
construction. The final filled surface shall be compacted with approved construction equipment
to provide a foundation surface with uniform density for clay liner placement.
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4.3.2 Disposal Cell Foundation Area
The footprint of the disposal cell is established along the north side of the dike between Cells 1
and 2 (shown on the Drawings).
4.3.3 Subgrade Fill Placement
Subgrade fill (Section 4.2.1) shall be placed in lifts with a maximum loose thickness of 12 inches
and compacted in excavated areas of the disposal cell footprint to meet desired grades and
elevations for the disposal cell foundation.
4.3.4 Clay Liner Material Placement
Clay liner material (Section 4.2.2) shall be placed in lifts with a maximum loose thickness of 6
inches to form a continuous layer with a total minimum compacted layer thickness of 12 inches.
Clay liner material shall be placed over the prepared subgrade surface of the disposal cell (Section
4.3.1).
Compaction of the clay liner material shall be done with a sheepsfoot or tamping-foot roller of
sufficient weight to achieve the required compaction specifications. Compaction of the clay liner
material shall not be achieved solely through the use of rubber-tired equipment.
If the moisture content of any layer of clay liner is outside of the allowable placement moisture
content range specified (Section 4.4.2), the material shall be moistened and/or reworked with a
harrow, scarifier, or other suitable equipment to a sufficient depth to provide relatively uniform
moisture content and a satisfactory bonding surface before the next layer of clay material is placed.
If the compacted surface of any layer of clay liner material is too wet (due to precipitation) for
proper compaction of the fill material to be placed thereon, it shall be reworked with a harrow,
scarifier or other suitable equipment to dry out the layer and reduce the moisture content to within
the required limits, and re-compacted.
Clay liner construction shall minimize lenses, pockets, streaks or layers of material differing
substantially in texture, gradation or moisture content from the surrounding material. Oversized
material will be controlled through observation of placement by a qualified individual with
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authority to stop work and reject material being placed and by culling oversized material from the
fill.
No clay liner material will be placed when either the materials, or the underlying material, is frozen
or when ambient temperatures do not permit the placement or compaction of the materials to the
specified density without developing frost lenses in the fill.
Any holes in the clay liner material resulting from testing shall be repaired by hand by filling with
clay fill, or by filling with bentonite powder which is hydrated to fully seal the hole.
4.4 Performance Standards and Testing
Lifts of material with tested dry densities less than the specified values will be reworked by the
Contractor as necessary and re-compacted until the specified dry density is attained. Material that
is too dry or too wet to permit bonding of layers during compaction will be reworked by the
Contractor until the moisture content is within the specified limits.
4.4.1 Subgrade Testing
Subgrade fill shall be placed in lifts not exceeding 8 inches in loose thickness. Each lift shall be
compacted to a minimum of 90 percent of standard Proctor (ASTM D698) density and within 3
percent of the optimum moisture content for the material.
Where required, checking of compaction of compacted subgrade fill and the final subgrade surface
will consist of a minimum of one field density test per 1,000 cubic yards of material compacted.
A minimum of two tests will be taken for each day that more than 150 cubic yards of material is
placed. A minimum of one test per lift and at least one test for every full shift of compaction
operations will be taken.
Field density tests will be compared with standard Proctor tests (ASTM D698 Method A or C).
Where required, standard Proctor or Maximum Index Density tests will be conducted at a
frequency of at least one test per 10,000 cubic yards of material compacted, or when material
characteristics show significant variation.
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Field density testing will be conducted with the sand cone test (ASTM D1556) or a nuclear density
gauge (ASTM D6938, or as modified by the CQA Site Manager). Correlation of nuclear density
gauge results will be by comparison with results from sand cone test(s) and laboratory testing for
water content(s) using the oven drying method (ASTM D2216) on similar material.
4.4.2 Clay Liner Testing
Each lift of clay liner material shall be compacted to at least 95 percent of the maximum dry density
for the material, as determined by the standard Proctor test (ASTM D698). During compaction,
the material shall be within 2 percent of the optimum moisture content for the material, as
determined by the standard Proctor test. If water addition is required to achieve this range of
moisture contents, the added water shall be thoroughly mixed into the material prior to compaction.
Material specifications for the clay liner material will be confirmed by gradation testing conducted
by approved personnel. Testing will consist of No. 200 sieve wash and maximum particle size
testing (ASTM D422), and Atterberg limits testing (ASTM D4318) on samples of clay liner
materials, at a frequency of at least one test per 2,000 cubic yards of fill placed, or when material
characteristics show a significant variation.
Compaction of the clay liner material will be checked with a minimum of one field density test per
500 cubic yards of material compacted. A minimum of two tests will be taken for each day that
more than 150 cubic yards of material is placed. A minimum of one test per lift and at least one
test for every full shift of compaction operations will be taken.
Field density tests will be compared with standard Proctor tests (ASTM D698 Method A or C) on
the same material. Standard Proctor tests will be conducted at a frequency of at least one test per
5,000 cubic yards of material compacted, or when material characteristics show significant
variation.
Field density testing will be conducted with the sand cone test (ASTM D1556) or a nuclear density
gauge (ASTM D6938, or as modified by the CQA Site Manager). Correlation of nuclear density
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gauge results will be by comparison with results from sand cone test(s) and laboratory testing for
water content(s) using the oven drying method (ASTM D2216) on similar material.
4.4.3 Grading Tolerances
The completed grading for the clay liner shall be within 1.0 foot (horizontally) of the lines as
designed, and within 0.1 foot (vertically) of the elevations as designed. The final surfaces shall be
smoothed to avoid abrupt changes in surface grade or areas of runoff concentration. The layer
thicknesses shall meet the required minimum thicknesses.
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5.0 DISCHARGE CHANNEL GRADING
5.1 General
This section outlines specifications for the work associated with excavating the discharge channel
from Cell 1. Portions of the grading for the sedimentation basin may be in soil, while other areas
may require rock excavation. Although the rock may be rippable, the Contractor should prepare
for non-rippable rock in some of the excavation areas.
5.2 Work Description
5.2.1 Discharge Channel Excavation
The discharge channel shall be excavated to the slopes and grades and channel widths shown on
the Drawings. Discharge channel excavation will include breaching of the dike on the west side
of Cell 1. Riprap will not be required to armor the discharge channel where the channel is
excavated into competent sedimentary rock, as verified in the field by the CQA Site Manager.
5.2.2 Grading Tolerances
Completed grading in soil for the sedimentation basin shall be within 1.0 foot (horizontally) of the
lines as designed, and within 0.1 foot (vertically) of the elevations as designed. Final surfaces
shall be smoothed to avoid abrupt changes in surface grade or areas of runoff concentration.
The completed grading in rock for the discharge channel and portions of the sedimentation basin
shall be within 2.0 foot (horizontally) of the lines as designed, and within 0.5 foot (vertically) of
the elevations as designed. The final excavated rock surfaces of the discharge channel will be
below design grades and shall not be filled to make grade.
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6.0 MILL DECOMMISSIONING
The following subsections describe decommissioning plans for the mill buildings and equipment,
the mill site, and associated windblown contamination.
6.1 Mill Buildings and Equipment
The uranium and vanadium processing areas of the Mill, including all equipment, structures and
support facilities, will be decommissioned by demolition and disposed of in tailings or buried on
site as appropriate. All equipment, including tankage and piping, agitation equipment, process
control instrumentation and switchgear, and contaminated structures will be cut up, removed and
buried in tailings prior to final cover placement. Concrete structures and foundations will be
broken up and removed. Concrete foundations may be left in place and covered with soil as
appropriate.
Decommissioned areas will include the following:
• Coarse ore bin and associated equipment, conveyors and structures
• Grind circuit including semi-autogeneous grind (SAG) mill, screens, pumps and cyclones
• Three pulp storage leach tanks to the east of the mill building, including all tankage,
agitation equipment, pumps and piping
• Seven leach tanks inside the main mill building, including all agitation equipment, pumps
and piping
• The counter-current decantation (CCD) circuit including all thickeners and equipment,
pumps and piping
• Uranium precipitation circuit, including all thickeners, pumps and piping
• Two yellow cake dryers and all mechanical and electrical support equipment, including
uranium packaging equipment
• Clarifiers to the west of the mill building including the preleach thickener (PLT), clarifier,
and claricone area
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• The boiler and all ancillary equipment and buildings
• The entire vanadium precipitation, drying and fusion circuit
• All external tankage not included in the previous list including reagent tanks for the storage
of acid, ammonia, kerosene, water, dry chemicals, etc. and the vanadium oxidation circuit
• The ammonium sulfate pad
• The uranium and vanadium solvent extraction (SX) circuit including all SX and reagent
tankage, mixers and settlers, pumps and piping
• The SX building
• The mill building
• The alternate feed processing circuit
• The decontamination pads
• The office building
• The shop and warehouse building
• The sample plant building
• The reagent storage building
The sequence of demolition will proceed so as to allow the maximum use of support areas of the
facility such as the office and shop areas. It is anticipated that all major structures and large
equipment will be demolished using hydraulic shears. This equipment will expedite the process,
provide proper sizing of the materials for transport and placement, and reduce personnel exposure
to radiation and other safety hazards during the demolition. Uncontaminated or decontaminated
equipment to be considered for salvage and remediation equipment will be released in accordance
with the terms of License Condition 9.10 and NUREG 1575 Supplement 1, Multi-Agency
Radiation Survey and Assessment of Materials and Equipment Manual (MARSAME) (NRC,
2009) as appropriate and applicable. Contaminated soils from the Mill area will be disposed of in
the tailings cells in accordance with Section 7.0.
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6.2 Mill Site and Windblown Contamination
Areas with contamination around the Mill site are expected to be primarily surficial, except for the
claricone and ammonium sulfate pad areas, and include the ore storage area and limited surface
contamination of roads. Ore and alternate feed materials will have been previously removed from
the ore stockpile area. Contaminated materials at the Mill site will be excavated and be disposed in
the Cell 1 Disposal Area in accordance with Section 7.0. The depth of excavation will vary
depending on the extent of contamination and will be based on the criteria in Section 7.2.3, except
for the claricone and ammonium pad areas which had removal depths and extents outlined in letters
submitted by EFRI to the DWMRC on 10/26/12 and 12/23/13, respectively. All other 11e.(2)
byproduct materials will be disposed in the tailings cells.
The Owner proposes to reclaim the Mill and surrounding land areas within the property boundary
by excavating and placing wastes, demolition debris and contaminated soils into a fenced and
controlled permanent disposal area. The permanent disposal area, the current restricted area, and the
property boundary, are delineated in Drawing REC-1. The Owner proposes to survey and release
all areas within the property boundary, excluding the Cell 1 Disposal Area and Cells 2, 3, 4A, and
4B, for unrestricted use.
Contaminants of concern are Ra-226, Th-230 and natural uranium (U-nat). The evaluation and
remediation will be dictated by Ra-226, which is the contaminant with the most restrictive cleanup
standard (based on the SENES Consultants, Inc. letter to EFRI dated August 15, 2012; this letter was
provided as Attachment I to EFRI’s Supporting Documentation for Response to Utah DWMRC
Interrogatory 13/1 (SENES 2012)). The correlation between Ra-226 and the remaining two
contaminants will be developed as outlined in subsequent sections of these Technical Specifications.
Verification of the remediation will be established through a Wilcoxon Rank Sum (WRS) test
between the study areas and local background areas. The procedure for verification will follow
guidance from NUREG-1575 Multi-Agency Radiation Survey and Site Investigation Manual
(MARSSIM) (NRC, 2000). The procedure will include:
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• Scoping and characterization surveys: soil samples will be collected to develop a correlation
between gamma radiation levels and the unity rule.
• Classification of land areas: to (MARSSIM) Class 1 through Class 3.
• Remediation of land areas driven by correlation-based prediction equation between gamma
radiation and the unity rule for multiple radionuclides.
• Final Status Survey using the Wilcoxon Rank Sum (WRS) test with local background areas.
The procedure also follows the Data Quality Objective (DQO) process defined in the MARSSIM
Guidance, as discussed in Section 6.6, and NUREG-1757 Volume 2 Consolidated Decommissioning
Guidance, Characterization, Survey, and Determination of Radiological Criteria (NRC, 2006).
6.3 Scoping and Characterization Surveys
Areas contaminated through process activities or windblown contamination from the tailings areas
will be remediated to meet applicable cleanup criteria for Ra-226, Th-230, and U-nat.
Contaminated areas will be remediated such that the residual radionuclides remaining on the site,
which are distinguishable from background, will not result in a dose that is greater than that which
would result from the Ra-226 soil standard, that is, 5 pCi/g above background for the surface 15
cm soil layer and 15 pCi/g for the subsurface 15 cm soil layer, respectively as discussed in Section
6.6.3.3 and hereafter referred to as “5/15”.
An initial scoping survey for windblown contamination will be conducted based on analysis of
pertinent past radiometric and land use information. Operational surveys of the areas surrounding
the Mill and tailings area have indicated potential windblown contamination only to the north and
east of the ore storage area, and to the southwest of Cell 3. The initial scoping survey will be
conducted using calibrated gamma radiation instruments on 15 meter (15 m) transects. Additional
surveys will be conducted in a halo, or buffer zone, around the projected impact area. The survey
in the halo will be conducted using 25 m transects. Areas where no readings exceed 75 percent of
the gamma radiation guideline value, as developed per Section 6.3.2, will be classified as
unaffected, and will not require remediation. Areas where one or more readings exceed the gamma
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radiation guideline value will be further investigated to determine whether or not remediation is
required.
Prior to initiating cleanup of windblown contamination, a statistically-based soil sampling program
will be conducted in an area within or outside the property boundary that is similar to the areas to
be remediated, to determine the average background Ra-226 concentration, or concentrations, to
be ultimately used for the cleanup. Similarity, or representativeness, will be determined based on
geology, soil type and soil chemistry.
Soil cleanup verification will be accomplished by use of calibrated gamma radiation instruments.
Multiple instruments will be maintained and calibrated to ensure availability and consistency
during remediation efforts (Section 6.3.4).
6.3.1 Scoping and Characterization Survey for the Subsurface
The subsurface will only be investigated in areas where the historical site assessment (HSA)
demonstrates the possibility of contamination below the 15 cm depth. This does not include areas
of windblown contamination, or the ore storage area (unless also affected by an event demonstrated
by the HSA). The method for the subsurface investigation will include boreholes where soil
sampling and downhole gamma radiation investigations may occur. This method will be developed
based on the HSA.
6.3.2 Gamma Radiation to Unity Rule Correlation
The Owner plans to use radiation measurement instrumentation for soil background analyses, unity
rule – gamma radiation correlations, verification data, and sensitivity analyses. Soil background
analyses will be completed using MARSSIM methods (NRC, 2000) for background reference
areas.
Soil samples taken during characterization for correlation will be analyzed by a certified laboratory
to determine the on-site correlation between the gamma radiation readings and the concentration
of Ra-226, Th-230 and U-nat, in the samples. Samples will be taken from:
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• Areas known to be contaminated with only processed uranium materials (i.e. tailings sand
and windblown contamination)
• Areas in which it is suspected that unprocessed uranium materials (i.e. ore pad and
windblown areas downwind of the ore pad) are present
The actual number of samples used will depend on the correlation of the results between gamma
radiation readings and the unity rule as discussed below. Windblown contamination to the
northeast of the Mill area is primarily associated with the unprocessed ore from the ore storage
pad. The slightly larger windblown contamination area to the southwest of the Mill area is
primarily associated with the processed tailings. A minimum of 35 samples of windblown tailings
(to the southwest), and 15 samples of windblown unprocessed ore materials (to the northeast) will
be collected.
Sufficient samples will be collected for developing prediction equations to calculate the linear
regression lines and the corresponding upper and lower 95 percent confidence levels for each of
the instruments. The upper one-sided 95 percent confidence limit will be used for the guideline
value for correlation between gamma radiation readings and Ra-226 concentration. Because the
unprocessed materials are expected to have proportionally higher values of uranium in relation to
the Ra-226 and Th-230 content, the correlation to the gamma radiation readings are expected to
be slightly different than readings from areas known to be contaminated with only processed
materials. Areas expected to have contamination from both processed and unprocessed materials
will be evaluated using the more conservative correlation, or will be excavated to the Ra-226
standard which should ensure that the uranium is removed.
The samples will be judgmentally selected with Ra-226 concentration at three different intervals
related to the guideline value (5 pCi/g above background):
• 25 percent of the guideline value
• Approximately the guideline value
• Approximately twice the guideline value for the area of interest
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This selection will maximize the precision of the correlation relationship at 5.0 pCi/g above
background. Background Ra-226 concentrations have been gathered over a 16-year period at
sample station BHV-3 located upwind and 5 miles west of the Mill. The Ra-226 background
concentration from this sampling location is 0.93 pCi/g. This value and the concentrations of U-
nat and Th-230 assumed in equilibrium with the Ra-226 will be used as an interim value for the
background concentration used only in the initial planning for this project (e.g. use of historical
knowledge for preliminary setting of verification sample sizes). Background locations for the
verification test will have the three contaminants measured at multiple locations.
Because Ra-226 has short-lived radioactive decay products that are strong gamma radiation
emitters (namely Pb-214 and Bi-214), gamma radiation surveys can be effective for characterizing
soil Ra-226 distributions across large areas, including on relatively small spatial scales. The well-
established, effective, and widely-used analytical approach for spatially comprehensive
characterization of Ra-226 concentrations in surface soils involves spatially intensive gamma
radiation surveys combined with the use of gamma radiation and soil Ra-226 concentration
correlations.
If a gamma radiation and Ra-226 concentration correlation is statistically significant, Ra-226
concentrations in surface soils can be predicted with reasonable accuracy based on gamma
radiation readings collected at a high density of measurements across large areas. The same is true
for other radionuclides, although correlative relationships tend to be less statistically significant
and estimation uncertainty can be higher. The advantage of gamma radiation surveys is that a
much higher density of measurements of terrestrial sources of gamma radiation is possible and
when combined with gamma radiation/soil radionuclide correlation analysis, the approach
produces a more comprehensive spatial characterization for comparisons against baseline
conditions and evaluation of potential radiological contamination.
Fifteen soil samples will be collected in the restricted area to establish a correlation between the
soil sampling analysis and the gamma radiation count. Additional measurement locations will be
added, if necessary, to reach suitable precision, as defined in Section 6.6.3.7. The method that will
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be used in an effort to develop statistically significant gamma radiation/soil radionuclide
correlations is as follows:
1. At each correlation plot, a 100 m2 (10 m x 10 m) plot for correlation measurements and
soil sampling will be established with pin flags. A gamma radiation scan will be
performed across each correlation plot (5 m transects at a detector height of 18 inches).
The average gamma radiation reading (e.g. cpm) from scan data across each correlation
plot will be calculated and recorded in the field logbook, or developed using data
collected from the gamma radiation scan. See Figure A-1 for the scan path.
2. Within each 10 m x 10 m correlation plot nine sub-samples of surface soils, one in the
center, and eight against the edges of the plot, will be collected across the plot (at a
depth of 15 cm) and composited into a single sample to represent average soil
radionuclide characteristics across the correlation plot. Composite surface soil samples
from each correlation plot will be submitted to a qualified commercial laboratory for
analysis of U-nat, Ra-226, Th-230, Th-232 (by Ra-228), and K-40. The correlation
plot scanning and sampling design for each location is illustrated in Figure A-1.
3. The laboratory chain of custody/analysis request form to be submitted with composite
correlation plot soil samples will specify the following requirements:
a. Thorough homogenization of each sample at the laboratory.
b. Ra-226 analysis by EPA Method 901.1, modified for soil samples, with sample
counting to be performed at least 21 days after sealing in the counting tin to
ensure full ingrowth of Rn-222 and its decay products. Analysis of K-40 will
also be conducted with EPA method 901.1, as will analysis of Ra-228 (to
determine Th-232 concentrations under the assumption of radiological
equilibrium).
c. U-nat analysis by EPA Method 200.8 (ICP-MS) or equivalent, preferably with
soil matrix digestion using EPA Method 3052 (microwave assisted acid
digestion). EPA Method 3050B or equivalent digestive methods may
alternatively be used; however, digestion will not be as complete.
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d. Th-230 analysis by EPA Method 200.8 (ICP-MS) or equivalent, preferably with
soil matrix digestion using EPA Method 3052 (microwave assisted acid
digestion). Ten percent of the correlation plot samples will also be analyzed for
Th-230 by alpha spectroscopy.
4. Upon receiving soil analysis results from the laboratory, regression analysis will be
performed to determine, based on paired data from all correlation plots, if significant
statistical correlations exists between average gamma radiation readings and soil Ra-
226, U-nat, Th-230, Th-232 by Ra-228 and K-40 concentrations.

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6.3.3 Area Classification
The characterization and scoping surveys will be used to classify areas as either non-impacted or
impacted areas. The impacted areas will be further classified into Classes 1-3 (NUREG-1575;
NRC, 2000). The classification of the areas will determine the rigor required to survey and release
the areas.
• Class 1 areas are areas which have, or had prior to remediation, a potential for radioactive
contamination based on Mill operating history, or known contamination based on previous
radiological surveys. Areas containing contamination in excess of the release criterion,
specifically the Derived Concentration Guideline Level (DCGL) associated with the
Wilcoxon Rank Sum Test (DCGLW), established by the radium benchmark dose (RBD)
approach in Section 6.6.3.3 prior to remediation should be classified as Class 1 areas. The
concentration terms “DCGLW”, “release criterion”, and “unity rule”, have been used
interchangeably throughout the remainder of these Technical Specifications. However,
where a gamma radiation-based level is meant, the term “gamma guideline level” is used
specifically.
• Class 2 areas are areas which have, or had prior to remediation, a potential for radioactive
contamination or known radioactive contamination, but are not expected to exceed the
DCGLW.
• Class 3 areas are any impacted areas not expected to contain any residual radioactivity, or
are expected to contain levels of residual radioactivity at a small fraction of the DCGLW,
based on Mill operating history and previous radiological surveys.

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Table 6.1 - Final Status Survey Unit Classification for Land Areas
Survey Unit Classification Statistical Test
Elevated
Measurement Comparison
Sampling
and/or Direct Measurements
Suggested
Area (m2) Scanning
Impacted Class 1 Yes Yes Systematic 2000 100% Coverage
Class 2 Yes Yes Systematic 10,000 10-100% Systematic
Class 3 Yes Yes Random No limit Judgmental
Non-Impacted No No No None None

6.3.4 Remediation
Remediation will only occur in survey units that cannot pass the release criterion (DCGLW).
Remediation will consist of excavation of soils and placement in the tailing cells, as stated in
Section 7.2.3. Remedial action support surveys will be conducted to guide the remediation.
Remedial action support surveys will be conducted in a manner similar to the Final Status Surveys
(FSSs), described in Sections 6.4 and 6.6, to ensure that the remedial action achieves the DCGLW.
Excavation will continue until the gamma radiation guideline value is achieved for surface soils.
Upon completion of remediation, gamma radiation surveys will be conducted on the excavated
area and areas surrounding the excavation.
6.4 Final Status Surveys
Areas of the site will be released through the final status survey (FSS) process (see Section 6.6).
Survey units will be released through FSS reports provided to DWMRC for each survey unit.
Survey units that require remediation will undergo the FSS process after remediation. Survey units
must meet the release criterion set forth in this section. Each survey unit that meets the release
criterion will be released, pending DWMRC approval.
6.4.1 Release Criterion
Release criteria have been established and are discussed in more detail in Section 6.6.
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6.4.2 Statistical Test
The WRS test will be performed using the background reference data set and the systematic sample
data set from the survey unit under investigation. The background reference data set will be added
to the unity rule (1) prior to the statistical test being completed. The two data sets will be derived
using the weighted sum for multiple radionuclides set forth in MARSSIM (NRC, 2000):
For surface soils: 𝐴𝐴 (𝑝𝑝𝑝𝑝𝑝𝑝/𝑔𝑔 𝑅𝑅𝑅𝑅226)5 (𝑝𝑝𝑝𝑝𝑝𝑝/𝑔𝑔)+𝐵𝐵 (𝑝𝑝𝑝𝑝𝑝𝑝/𝑔𝑔 𝑈𝑈𝑈𝑈𝑅𝑅𝑈𝑈)545 (𝑝𝑝𝑝𝑝𝑝𝑝/𝑔𝑔)+𝑝𝑝 (𝑝𝑝𝑝𝑝𝑝𝑝/𝑔𝑔 𝑇𝑇ℎ230) 46 (𝑝𝑝𝑝𝑝𝑝𝑝/𝑔𝑔)+1
For subsurface soils: 𝐴𝐴 (𝑝𝑝𝑝𝑝𝑝𝑝/𝑔𝑔 𝑅𝑅𝑅𝑅226)15 (𝑝𝑝𝑝𝑝𝑝𝑝/𝑔𝑔)+𝐵𝐵 (𝑝𝑝𝑝𝑝𝑝𝑝/𝑔𝑔 𝑈𝑈𝑈𝑈𝑅𝑅𝑈𝑈)2908 (𝑝𝑝𝑝𝑝𝑝𝑝/𝑔𝑔)+𝑝𝑝 (𝑝𝑝𝑝𝑝𝑝𝑝/𝑔𝑔 𝑇𝑇ℎ230)142 (𝑝𝑝𝑝𝑝𝑝𝑝/𝑔𝑔)+1
For instance, if the background reference area surface soil data set showed that one sample
contained 2.2 pCi/g Ra-226, 2.2 pCi/g U-nat, and 2.0 pCi/g Th-230, the sample would be
represented in the WRS data set as the following: 2.2 (𝑝𝑝𝑝𝑝𝑝𝑝/𝑔𝑔 𝑅𝑅𝑅𝑅226)5 (𝑝𝑝𝑝𝑝𝑝𝑝/𝑔𝑔)+2.2 (𝑝𝑝𝑝𝑝𝑝𝑝/𝑔𝑔 𝑈𝑈𝑈𝑈𝑅𝑅𝑈𝑈)545 (𝑝𝑝𝑝𝑝𝑝𝑝/𝑔𝑔)+2.0 (𝑝𝑝𝑝𝑝𝑝𝑝/𝑔𝑔 𝑇𝑇ℎ230)46 (𝑝𝑝𝑝𝑝𝑝𝑝/𝑔𝑔)+1 =1.49
Thus, 1.49 (unitless) for this particular background sample would be used in the WRS comparison
data set for the background reference area to be compared to the survey unit data. If this sample
were from the survey unit, the value would be 0.49 (unitless).
The WRS test will be performed on the survey unit and background reference area using the
method in MARSSIM. For Class 1 to Class 3 survey units, the null hypothesis is that the survey
unit exceeds the release criterion. If the null hypothesis is rejected, the mean for the survey unit
does not exceed the DCGLW, and no area exceeds the DCGL Elevated Measurement Comparison
(DCGLEMC) then the survey unit is presumed to meet the release criterion and, pending DWMRC
approval, released.
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If an area in a survey unit exceeds the DCGLW, the area of the contamination will be determined
using a mixture of soil sampling and gamma radiation surveying.
A comparison to the EMC will be made to determine if the area presents a dose equal to, or lower
than, the DCGLW scenario. This determination will be completed through the derivation of area
factors based on the size of hypothetical areas of contamination. The area factor for a contaminated
area will be multiplied by the DCGLW to determine the allowable contaminant concentration for
that size of area, which still meets the unity rule. Area factors will be determined prior to FSS’s
and will be approved by DWMRC.
Areas of elevated activity that do not meet the DCGLEMC will be remediated.
6.5 Instrument Quality Assurance/Quality Control (QA/QC)
Field gamma radiation survey instrumentation will be sodium iodide (NaI) detectors. To the extent
possible, the same instruments will be use throughout the characterization, remediation and final
status survey. These instruments will be cross-calibrated to allow other identical instruments or
similar instruments to be used. Individuals will be appropriately trained to use the selected
instrumentation and the instrumentation will be suitable for its intended use. Instrumentation shall
be operated in accordance with written procedures and manufacturers’ manuals which will provide
guidance to field personnel on the proper use and limitations of the instruments.
6.5.1 Calibration
The manufacturer’s current calibration/maintenance records will be kept on site for review and
inspection for all instruments used during the survey. Past calibration records will be retained for
inclusion in the FSS report.
The records will include, at a minimum, the following:
• Equipment identification (name, model, and serial number)
• Manufacturer
• Date of calibration
• Calibration due date
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Instrumentation must be maintained and calibrated to manufacturer’s specifications to ensure that
required traceability, sensitivity, accuracy, and precision of the equipment/instruments are
maintained. Instruments will be maintained and calibrated in accordance with American National
Standards Institute N323A (ANSI, 1997).
6.5.2 Source and Background Checks
Prior to and after daily use, instruments will be QC-checked by comparing the instrument’s
response to a designated gamma radiation source and to ambient background. Prior to
commencement of field operations, a site reference location will be selected for the performance
of these checks. Acceptable ranges (count rate) for each instrument will be established by
performing a series of counts. The acceptable range will be + 2 sigma of the mean of the series of
counts. QC source checks will consist of one-minute integrated counts with the designated source
position in a reproducible geometry, performed at the designated location. Background checks
will be performed in an identical fashion with the source removed. Results of the background and
QC checks will be recorded in a field logbook.
Instrument response to the designated QC check source will be plotted on control charts or in
tabular form (spreadsheets) and evaluated against the average source and background readings
established at the start of the field activities. A performance criterion of +/– 2 sigma of this average
will be used as an investigation action level, and a repeat of the measurement will be performed.
A performance criterion of +/– 3 sigma of this average will be used as a failure level requiring
corrective action. Results exceeding this criterion will be investigated and appropriate corrections
to instrument readings will be made if the response is affected by factors beyond personnel control,
such as large humidity or temperature changes. The instrument(s) in question will be removed
from service while investigations and corrective actions are in progress.
Instrument response to ambient background will be used to establish a mean background response
for each instrument, to monitor gross fluctuations in background activity (e.g., from changes in
barometric pressure and other, non-contaminant related causes), and to evaluate detector response.
The background measurements are performed for the purpose of checking for detector
contamination and electronic stability (especially cabling).
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Instrument response to source checks are used to prove detector efficiency and electronics stability.
During QC checks, instruments shall be inspected for physical damage, current calibration and
erroneous readings. The individual performing these tasks shall document the results in
accordance with the instrument protocol within MARSSIM, as provided in Exhibit A-1.
Instrumentation that does not meet the specified requirements of calibration, inspection, or
response check will be removed from operation. If the instrument fails the QC response check,
any data obtained to that point, but after the last successful QC check will be considered invalid
due to potentially faulty instrumentation.
6.6 Data Quality Objectives
This plan was developed using guidance from MARSSIM to ensure surveys are conducted with the
proper rigor, quality assurance, and statistical analysis to make proper decisions. A key step in the
MARSSIM process is the development of DQOs. DQOs ensure collection of data of the right type,
quality, and quantity to support decisions, the decommissioning process, and the achievement of the
desired end state. The DQOs are outlined below, and include systematic processes to:
1) State the problem
2) Identify the goal of the characterization
3) Identify inputs to the decision
4) Define the study boundaries
5) Develop the decision rules/analytical approach
6) Define acceptable decision errors
7) Optimize the design
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6.6.1 State the Problem
Ultimately, the mill will be decommissioned, the demolition and decommissioning waste disposed
in the tailings cells, and the tailings system reclaimed as approved by DWMRC. The reclamation
objective is to release the mill’s land areas, other than the tailings area, for unrestricted use. Land
areas may have radiological contamination from milling operations. The scanning procedure needs
to identify and distinguish areas that can be released, from areas that must be remediated prior to
being released. The data collected following excavation in remediation areas must also be suitable
for use in the FSS to demonstrate that the clean-up criteria have been met.
6.6.2 Identify the Decisions
The decision process will be based on data from scoping and characterization surveys, gamma
radiation correlation, remediation and final status surveys.
Survey and sampling data will be used to:
1) Assist in classification of survey units
2) Determine areas requiring remediation
3) Develop Final Status Surveys to verify that clean-up criterion has been met
6.6.3 Identify Inputs to the Decision
6.6.3.1 Characterization and Scoping
HSAs, scoping surveys, and characterization surveys will be used to determine the extent of the
contamination as well as the presence of useable relationships/ratios between the radionuclides of
background reference areas. The presence of useable relationships will be established in
accordance with Section 4.5 of MARSSIM (NRC, 2000). Soil sampling will be conducted in the
survey areas and samples will be analyzed for U-nat, Th-230 and Ra-226.
The background must be correctly characterized and a proper background reference area chosen to
represent the background for the Mill soils. This will ensure that the soil will be cleaned up to the
appropriate level. Goals of the characterization include selecting an appropriate background
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reference area(s) and appropriate background(s), and correctly comparing selected background(s)
with the survey units. Multiple backgrounds may be selected for different survey units depending
on the characterization and scoping surveys in conjunction with the HSA.
From MARSSIM Section 4.5, a site background reference area should have similar physical,
chemical, geological, radiological, and biological characteristics as the survey unit being
evaluated. Background reference areas are normally selected from non-impacted areas, but are
not limited to natural areas undisturbed by human activities. In some situations, a reference area
may be associated with the survey unit being evaluated, but cannot be potentially contaminated by
site activities. For example, background measurements may be taken from core samples of a
building or structure surface, pavement, or asphalt. The selected reference areas will be reviewed
with DWMRC.
Systematic soil sampling will occur prior to the FSS, and samples will be analyzed for Ra-226,
Th-230, and U-nat to determine background concentrations to be used for the cleanup. The soil
sampling to determine the average background radionuclide concentrations to ultimately be used
for the cleanup will be conducted prior to remediation. Background sampling will be conducted
in a reference area within or outside of the property boundary that is similar to the area to be
remediated.
Background reference areas will be chosen such that they are representative of the survey unit
locations but are non-impacted from site operations. Representativeness shall be determined on
the basis of geomorphology, geological, geochemical, and radiological, considerations.
6.6.3.2 Correlation
A correlation of the unity rule in the soil to the gamma radiation will be developed. This correlation
will guide remediation and excavation. This correlation is explained in Section 6.3.2.
Remediation of the soil to meet the unity rule is described in Section 6.3.4. The final status survey
reports will be the definitive source of information to describe the final impacts on the soil left by
the Mill. The reports will detail how the cleanup met the Site Cleanup Criteria and show that each
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survey unit meets the cleanup criteria. The FSS reports will verify that the remediation has achieved
the cleanup criteria.
6.6.3.3 Site Cleanup Criteria
The DCGLs for Ra-226 are set at 5 pCi/g for the surface 15 cm soil layer and 15 pCi/g for the
subsurface 15 cm soil layer, respectively (hereafter referred to as “5/15”) (See Attachment D for
further discussion).
The DCGLs for radionuclides other than Ra-226 are derived from doses calculated for Ra-226 at
5/15 using the same exposure scenarios as were used to estimate the dose from Ra-226 at 5/15.
This is referred to as the radium benchmark dose (RBD).
Generally, elevation of U-nat and Th-230 concentrations relative to Ra-226 is unexpected since
the contaminated materials will either be ore (which are at or near secular equilibrium) or tailings
where U-nat is reduced relative to the other uranium decay series radionuclides of interest. Possible
exceptions are:
• Areas with raffinate crystals which may have higher Th-230 concentrations compared to
Ra-226 concentrations
• Areas of spilled yellowcake product near the mill where U-nat may be elevated relative to
Ra-226
The RBD approach was applied as described in Attachment D. The RESRAD (Version 6.5) code
(Yu et al. 2001) was used to implement the RBD approach. As described in NUREG-1569 as
Appendix E (NRC 2003, a Guidance document for NRC Commission Staff on the Radium
Benchmark Dose Approach), NRC considers the RESRAD code as an acceptable code for
application of the Ra-226 benchmark dose approach. In brief, radionuclides at their respective
DCGLs result in the same benchmark dose as the Ra-226 DCGL.
The DCGLs for the radionuclides of interest for the surface and subsurface layers were calculated
and are provided in Table 6.2. The scenario is for a rancher with the doses determined using the
RESRAD Version 6.5 model. The default RESRAD dietary and inhalation data which apply for
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the adult are carefully selected from literature and are already considered to represent conservative
parameter values. Details on the calculation of DCGL’s are provided in Attachment D.
Table 6.2 - DCGL above background
DCGL (pCi/gram) above background
Radionuclide Surface Subsurface
Ra-226 5 15
U-nat 545 2908
Th-230 46 142

Since there is more than one radionuclide of concern, the criteria for unrestricted use is applied
using the unity rule such that the RBD is never exceeded.
In the equations below, the numerator is determined by subtracting the local background from the
sample analysis following remediation. It is possible that the background may vary between survey
units due to variation in soil types.
The unity rules are:
For surface soil: 𝐴𝐴 (𝑝𝑝𝑝𝑝𝑝𝑝/𝑔𝑔 𝑅𝑅𝑅𝑅226)5 (𝑝𝑝𝑝𝑝𝑝𝑝/𝑔𝑔)+𝐵𝐵 (𝑝𝑝𝑝𝑝𝑝𝑝/𝑔𝑔 𝑈𝑈𝑈𝑈𝑅𝑅𝑈𝑈)545 (𝑝𝑝𝑝𝑝𝑝𝑝/𝑔𝑔)+𝑝𝑝 (𝑝𝑝𝑝𝑝𝑝𝑝/𝑔𝑔 𝑇𝑇ℎ230)46 (𝑝𝑝𝑝𝑝𝑝𝑝/𝑔𝑔)≤1
For subsurface soil: 𝐴𝐴 (𝑝𝑝𝑝𝑝𝑝𝑝/𝑔𝑔 𝑅𝑅𝑅𝑅226)15 (𝑝𝑝𝑝𝑝𝑝𝑝/𝑔𝑔)+𝐵𝐵 (𝑝𝑝𝑝𝑝𝑝𝑝/𝑔𝑔 𝑈𝑈𝑈𝑈𝑅𝑅𝑈𝑈)2908 (𝑝𝑝𝑝𝑝𝑝𝑝/𝑔𝑔)+𝑝𝑝 (𝑝𝑝𝑝𝑝𝑝𝑝/𝑔𝑔 𝑇𝑇ℎ230)142 (𝑝𝑝𝑝𝑝𝑝𝑝/𝑔𝑔)≤1
MARSSIM requires that the median concentration in a survey unit be demonstrably lower than the
DCGLW following remediation. This is accomplished with a WRS test between soil concentrations
in the survey unit and appropriate background reference locations. For the WRS test, the actual
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concentrations are used for the survey unit rather than using the incremental concentrations,
discussed previously in Section 6.4.2.
6.6.3.4 Gamma Radiation Surveys
Gamma radiation surveys will be conducted with a GPS-integrated system using 2-inch by 2-inch
sodium iodide (NaI) detectors or the equivalent. Statistical correlations will be developed between
the radiological soil sample analysis and the gamma radiation count rate. See Section 6.4.2 for the
method for development and use of the gamma radiation correlation.
With the GPS-integrated method, high density gamma radiation scanning surveys will be done
using the Ludlum 44-10 detectors at a height of 18 inches above the ground. The surveyor speed
will be approximately 0.5 m/s.
For Class 1 survey units, transects will be 5 m apart and gamma radiation scanning surveys will
continue up to 20 m outside the excavation with averages calculated on each 10-m by 10-m block.
Class 1 survey units will scanned at a density to ensure that 95 percent of the 10-m by 10-m blocks
have at least 20 gamma radiation measurements for blocks in and adjacent to the excavation areas
with measurements in at least three of the four quadrants of the 10-m by 10-m block.
The remainder of the survey area outside the remediation area will be classified as Class 2 and will
be surveyed at 10 m transects. The requirement for the remainder of the survey area, Class 2, will
be that 95 percent of the blocks have at least 10 gamma radiation measurements.
The Class 3 area will include the buffer areas outside the area of contamination, and this area will
be surveyed with planned transects of 50 m. Twenty percent or more of the 10-m by 10-m blocks
will have at least 10 gamma radiation measurements.
The mean, median, and standard deviation of the 10-m by 10-m averages will be calculated by
survey unit for data logged during the scanning surveys.
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6.6.3.5 Gamma Radiation Guideline Level
The average gamma radiation count rate will be established over the 10-m by 10-m blocks. A
correlation will be established between the gamma radiation level and the unity rule using co-
located gamma radiation and soil concentration measurements. The gamma radiation guideline
value will be the gamma radiation counts that equate to 0.8 (80 percent of unity rule) from the
correlation equation. Locations where the gamma radiation guideline is exceeded will have
additional gamma radiation surveys and potentially additional excavation before verification
sampling.
6.6.3.6 Selection of Verification Samples
Following completion of excavation, if necessary, verification sampling will be carried out for
each survey unit to allow a WRS test with background samples to confirm that the compliance
criteria has been met. Ten sampling blocks will be determined from a random sampling approach
for each survey unit. Following the final status gamma radiation survey, a minimum of 15 blocks
in the survey unit will be measured to confirm the gamma radiation guideline level. For these 15
samples, the five 10- by 10-m blocks with the highest average gamma radiation will be sampled
along with another 10 sample blocks randomly selected from the area.
The soil samples from the 10 randomly selected locations will be assessed to determine if the mean
concentration in the survey unit is statistically below the unity rule with an alpha error of 0.05
using the MARSSIM WRS test.
The number of samples may be increased per Section 6.6.8.
6.6.3.7 Revision of Correlation
The verification sample measurements (soil analysis and mean gamma radiation counts) will be
compared to the correlation to determine if the correlation is statistically valid. The correlation will
be updated with the verification measurements if there is less than a 95 percent probability (p-
value of 0.05) that the random verification data is less than DCGLW. Verification measurements
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(soil sample and mean gamma radiation counts) will be taken with the same method as the
correlation measurements.
6.6.3.7.1 Reporting
For each survey unit, the following will be reported:
1. Number of blocks remediated during remediation phase.
2. Number of blocks with subsequent remediation initiated by gamma radiation measurement.
3. Gamma radiation coverage compliance (i.e. percentage of blocks meeting number of
measurement criteria).
4. Mean gamma radiation level averaged over the 10-m by 10-m blocks.
5. Mean and range of predicted unity rules based on gamma radiation survey.
6. Mean and range of measured unity rules based on verification sampling.
6.6.3.8 Field Data
The objectives of the survey and sampling activities are to identify the concentrations of residual
radioactive material in the survey units so that the unity rule can be evaluated. This information
will allow a determination of whether a survey unit is likely to be suitable for release. The average
soil concentrations will be evaluated to verify that each radiological DCGLW is met.
6.6.4 Define the Study Boundaries
The soil in the restricted area will be surveyed for radiological contamination of U-nat, Th-230,
and Ra-226. This does not include the tailings cells and unrestricted areas. Survey units will be
established in the unrestricted area if, during the survey of the restricted area, contamination is
found at the boundary of the restricted area or if there is reason to believe contamination is present
in the unrestricted area.
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6.6.5 Develop the Decision Rules/Analytical Approach
If soils exhibit widespread contamination above the DCGLW, then removal of the soil will be
necessary or the EMC process will need to be followed to ensure that areas of contamination will
not exceed the DCGLW following excavation.
6.6.6 Define Acceptable Decision Errors
6.6.6.1 Statistical Tests
The WRS test will be used to compare background reference areas to survey units in the
MARSSIM framework for the FSS reporting. The WRS test is a nonparametric test used to test
for a difference in values between two populations; that is, one data population is hypothesized to
consist of higher average values than the other data population.
MARSSIM suggests using the WRS test in cases where the contaminant is present in background
at a significant fraction of the DCGLW. Since the DCGL is 5 pCi/g for Ra-226 and the background
is in the order of 1 pCi/g or more for Ra-226, the WRS test is the preferred test.
The soil concentrations from the 10 randomly selected locations as defined in Section 6.6.3.6 will
be assessed with the WRS test to determine if the median concentration in the survey unit is
statistically below the unity rule with an alpha error of 0.05 using the MARSSIM WRS test.
6.6.6.2 Hypothesis
The decisions necessary to determine compliance with the soil cleanup criteria are based on precise
statistical statements called hypotheses, which are tested using the data from the survey unit.
Null Hypotheses - The situation that is presumed to exist is expressed as the null hypothesis (H0),
which states “the median concentration in the survey unit exceeds the median concentration in the
background reference area by more than the DCGL.”
Alternative Hypotheses - For a given H0, there is a specified alternative hypothesis (Ha), which is
an expression of what is believed to be the situation if the null hypothesis is not true. The Ha states
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“the median concentration in the survey unit does not exceed the median concentration in the
background reference area by more than the DCGL.”
These hypotheses were chosen for the following two reasons: (1) the burden of proof is placed on
the HA and, (2) the survey unit will not be released until proven to meet the cleanup criterion. In
order to pass the WRS using the above H0, the median concentration of the systematic samples in
the survey unit must be less than the DCGLW above background.
6.6.6.3 Error Types
Decision errors help to determine the number of samples required. Generally, more samples are
required to generate lower decision errors (i.e., the fewer samples, the larger the uncertainty).
The statistical acceptability decisions are designed to avoid two kinds of errors:
• Releasing a survey unit which requires additional remediation
• Remediating a survey unit which is already below the DCGLW
Two possible error types are associated with such decisions, Type I and Type II, which are
described below.
Type I – which is also referred to as a false positive, occurs when H0 is rejected when it is actually
true. The probability of a Type I error is usually denoted byα. This error could result in higher
potential doses to future site occupants than prescribed by the dose-based criterion. The maximum
Type I error rate has been set at α = 0.05 (there is less than 5 percent chance of error).
Type II - which is referred to as a false negative, occurs when H0 is not rejected when it is actually
false. The probability of a Type II error is usually denoted byβ. Consequences of Type II errors
include unnecessary remediation expense and project delays. The Type II error rate has been set
at β=0.10 (there is less than 10 percent chance of error).
Statistical correlations will be developed between the unity rule and the gamma radiation
measurements. The unity rule will be determined from measurement data for incremental
concentrations at each sample location. The correlation between the unity rule and the gamma
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radiation measurement at the sample location will produce a prediction equation. MARSSIM
requires that the mean concentration in a survey unit be demonstrably lower than criteria following
remediation but does not require all sampling units, in this case the 10-m by 10-m areas, to be
lower than the criteria. The precision goal for the relationship will be that the mean prediction
uncertainty for the survey unit will be +/- 0.2 when the predicted unity rule is equal to “1”.
Protocols will be in place to ensure decision errors are kept to a minimum. For example,
instrument quality assurance checks will be required and minimum detectable concentrations
(MDCs) will be met.
The gamma radiation survey will be limited by the MDC for the 2-inch x 2-inch sodium iodide
(NaI) detector which is approximately 104 Bq/Kg (2.8 pCi/gram) for Ra-226, MARSSIM Table
6.7. This MDC is dependent on the background which may raise or lower the MDC (NRC, 2000).
Table 6.3. Reported MDC’s from MARSSIM Table 6.7
Nuclide MDC (Bq/kg) MDC (pCi/gram)
U-Nat 2960 80
Th-230 78,400 2100
Ra-226
(with decay products in equilibrium)
104 2.8

6.6.7 Relative Shift and Number of Samples
The target decision errors are 0.05 and 0.10 for α andβ, respectively. The major contributor to
the unity rule is Ra-226 since the criterion is much lower for Ra-226 compared to U-nat and Th-
230. The lower bound of the gray region (LBGR) has been set to 0.8 as Ra-226 has a typical
concentration that is only about 25 percent of the LBGR and the uncertainty will likely be of this
order.
The preliminary estimate is that a relative shift of 2.0 based on the LBGR of 0.8 and an uncertainty
of twice the background concentration. Using Table 5.3 of MARSSIM (NRC, 2000), the required
number of samples is 8.
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Should any area exceed the DCGLEMC or large areas exceed the DCGLW, remediation of the
affected areas would be completed prior to resampling.
6.6.8 Optimize the Design
Initially, gamma radiation scans will be conducted in the restricted areas of the Mill site. The data
from these scans will be reviewed to determine the location of any hotspots. These hotspot
locations will be sampled to determine the activity concentrations of U-nat, Th-230, and Ra-226.
A prediction equation of the unity rule will provide the basis for scanning large areas effectively
to direct focused remediation and to ensure that the cleanup criterion is met.
The statistical test (WRS test) could fail to show that the mean is below the criterion due to the
initial number of verification samples, since there may be insufficient samples to achieve the
desired decision error rates given the characteristics of the survey unit. In cases where data suggest
that the concentration is below the criterion (e.g., the mean bases), additional samples would
reduce the decision error and potentially allow the survey unit to pass. In this case, the mean and
variability of the 10 randomly selected measurements will be used to determine MARSSIM’s
relative shift with the lower bound of the gray region equal to 0.8 of the unity rule. The α error
will be set to 5 percent and the β error set to 10 percent to determine the required total number of
samples. These samples would be collected and the WRS repeated on the larger data set.
6.7 Soil Sampling
6.7.1 Laboratory Approval
All samples will be analyzed for radionuclide activity concentration (pCi/g). All analyses will be
performed by a DWMRC-approved/certified laboratory and a DOE-certified, or National
Environmental Laboratory Accreditation Program (NELAP)-certified laboratory. The laboratory
will analyze method blanks, matrix spike samples, laboratory control samples and replicates.
Typical required detection levels will be less than or equal to one tenth of the DCGL for each
radionuclide.
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6.7.2 Data Validation
Laboratory analytical results from the final status survey will be validated and will be reviewed by
the data validator for the following:
• Data completeness/sample integrity
• Holding times
• Calibration
• Alpha spectroscopy tracer analysis
• Laboratory and field blanks
• Laboratory control samples
• Laboratory and field duplicates
• Alpha spectroscopy matrix spikes
• Quantitation and detection limits
• Alpha spectroscopy chemical separation specificity
• Gamma radiation spectroscopy target radionuclide list identification
• Secular equilibrium verification, and result verification
Review of these parameters checks the quality of the data with respect to:
• Precision – which is a measure of the reproducibility of an analysis under a given set of
conditions. Precision will be evaluated through a review of field duplicate and laboratory
duplicate samples.
• Accuracy – which is a measure of the bias that exists in a measurement system. Accuracy
will be evaluated through a review of laboratory control samples, matrix spike samples,
method blanks, and tracer recoveries.
• Representativeness – which is a measure of the degree to which the sampling data
accurately and precisely represent site conditions. Representativeness will be evaluated
through a review of raw data and through a comparison of whether the proposed scoping
survey was implemented.
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• Comparability – which is a measure of the degree of confidence with which two data sets
can be compared to each other. Comparability will be evaluated through an assessment of
whether appropriate and acceptable analytical methods were used.
• Completeness – which is a measure of the amount of valid data obtained.

6.8 Employee Health and Safety
Programs currently in place for monitoring of exposures to employees will remain in effect
throughout the time period during which tailings cell reclamation, mill decommissioning and clean
up of windblown contamination are conducted. This will include personal monitoring and the
ongoing bioassay program. Access control will be maintained at the Restricted Area boundary to
ensure employees and equipment are released from the site in accordance with the current License
conditions. In general, no changes to the existing programs are expected and reclamation activities
are not expected to increase exposure potential beyond current levels.
6.9 Environment Monitoring
Existing environmental monitoring programs will continue during the time period in which
reclamation and decommissioning is conducted. This includes monitoring of surface and
groundwater, airborne particulates, radon, soils and vegetation according to the existing License
conditions. In general, no changes to the existing programs are expected and reclamation activities
are not expected to increase exposure potential beyond current levels.
6.10 Quality Assurance
In general, the QA/QC Plan details the Owner’s organizational structure and responsibilities,
personnel qualifications, operating procedures and instructions, record keeping and document
control, sampling procedures and outside laboratory testing.
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7.0 MATERIAL DISPOSAL
7.1 General
This section outlines work associated with placement of materials in the disposal cell area within
Cell 1 (Cell 1 Disposal Area) and tailings cells (Cells 2 through 4).
7.2 Materials Description
The types of materials to be disposed of are outlined below.
7.2.1 Raffinate Crystals
After the residual liquid in Cell 1 has been evaporated, the raffinate crystals from Cell 1 will be
excavated and disposed in one of the tailings disposal cells. The crystals are likely to have granular
consistency, with larger crystal masses that may require breaking down for loading and transport
(using the loading equipment).
7.2.2 Synthetic Liner
The existing PVC liner in Cell 1 will be removed and disposed of in one of the tailings disposal
cells.
7.2.3 Contaminated Soils
During remediation, soils located in and around the Mill site that exceed the soil cleanup guideline
value will be placed in one of the tailings disposal cells. Soils excavated from Cell 1 to meet
design grades or exceed the soil cleanup guideline value shall be placed in one of the tailings
disposal cells.
7.2.4 Mill Debris
The Mill debris will include equipment, such as tankage and piping, agitation equipment, process
control instrumentation and switchgear, and contaminated structures (including concrete structures
and foundations). Mill debris will be placed in the Cell 1 Disposal Area.
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7.3 Work Description
Materials to be disposed in the cells will be spread over the working surface as much as possible
to provide relatively uniform settlement and consolidation. In the disposal cell, a minimum of one
foot of soil will be placed over the clay liner prior to placing any debris.
7.3.1 Raffinate Crystals
Raffinate crystals will be removed from Cell 1 and transported to the tailings cells. Placement of
the crystals will be performed as a granular fill, with large-sized material broken to minus 6-inch
size. Voids around large material will be filled with finer material. Actual placement procedures
will be evaluated by the CQA Officer during construction as crystal materials are placed in the
cells and modified with the agreement of the DWMRC.
7.3.2 Synthetic Liner
The PVC liner will be cut, folded (when necessary), removed from Cell 1, and transported to the
tailings cells. The liner material will be spread as flat as practical over the designated area. After
placement, the liner will be covered as soon as possible with at least one foot of soil, crystals or
other materials for protection against wind uplift, as approved by the CQA Site Manager.
7.3.3 Contaminated Soils
The extent of contamination of the Mill site will be determined by gamma radiation scanning and
the A correlation developed between gamma survey readings and the unity rule concentrations
(Section 6). Gamma survey readings will be used to define cleanup areas and confirm cleanup.
Soil sampling will be conducted to verify that the cleanup results meet soil cleanup guideline
values.
Where surveys indicate the above criteria have not been achieved, the soil will be removed to meet
the criteria. Soil excavated from Cell 1 will be transported to one of the tailings cells.
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7.3.4 Mill Debris
Debris will be spread across the bottom of the disposal cell to avoid nesting and to reduce the
volume of voids present in the disposed mass. Stockpiled soils and/or other approved materials
will be placed over and into the debris in a sufficient lift thickness to fill the voids between the
debris pieces. The CQA Site Manager will approve the use of materials other than stockpiled soils
for filling voids.
7.3.5 Material Sizing and Preparation
Demolition debris to be placed in the Cell 1 Disposal Area will consist of equipment and structural
material from facilities demolition. Demolition procedures are outlined in the Appendix B to the
Reclamation Plan (Preliminary Mill Decommissioning Plan). Because of the wide variety in shape
and size of demolition debris, material of odd shapes will be cut or dismantled to facilitate
handling, loading, transport, and placement in the disposal cell. The maximum size of dismantled
or cut materials will not exceed 20 feet in the longest dimension and a maximum volume of 30
cubic feet. Smaller dimensions may be necessary for loading, handling, hauling, and placement
of material.
7.3.6 Incompressible Debris
Material that is not compressible (steel columns and beams, concrete, and other solid material)
will be reduced in size for loading, hauling, and placement in the disposal cell. Incompressible
debris shall be placed, oriented, or spread in a manner that minimizes void spaces below, between,
and above these materials. Incompressible debris shall be placed on and covered with soils or
similar materials (Section 7.2.3). Incompressible debris such as steel members shall be placed in
the disposal cell with the longest dimension oriented horizontally.
Thick-walled pipe, conduit, tanks, vats, pressure vessels, and other hollow materials that cannot
be crushed or dismantled shall be transported to the planned location within the disposal cell and
oriented for filling and burial. The voids on the inside of the item will be filled with contaminated
soil, clean fill soil, or grout (controlled low-strength material or flowable fill). Contaminated soil
(Section 7.2.3) or clean fill will be placed outside of the items and compacted with standard
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compaction equipment (where possible) or hand-operated equipment to the compaction
requirements in Section 7.4. Several lifts of compacted contaminated soil or clean fill may be
necessary to fill around and cover these items.
For debris where internal voids cannot practically be filled with soil, a grouting program will be
initiated to pump controlled low strength material (CLSM, flowable fill) into the voids. Debris
will be grouped together and characterized as materials that will require grouting, so that a
significant volume of debris can be grouted in a single action, rather than grouting individual
lengths of pipe. Pipe sections could be stacked horizontally, or cut short enough to stand vertically
in a safe manner. Grout will fill the voids within the grouped debris with a soil berm or trench
used to contain the grout laterally around the perimeter of the selected debris.
If CLSM is required for the grouting of voids that cannot be filled with soil, the mix design for the
grout will mimic, as closely as possible, the strength and hydraulic properties of the contaminated
soil that will also be used for filling voids within the debris. The unconfined compressive strength
of the CLSM will be between 30 and 150 psi, and unit weights will be approximately 100 to 120
pcf.
7.3.7 Compressible Debris
Materials that are compressible (such as thin-walled piping and thin-walled tanks) will be flattened
or crushed in a designated staging area or in the disposal cell. Flattening or crushing will be done
with a hydraulic excavator bucket or other attachments, or with a dozer or other steel-tracked
equipment.
These materials shall be placed in the disposal cell and spread to form a lift with a maximum
thickness of two feet. Placement shall be done in a manner resulting in materials lying flat and
minimizing void spaces. Pipe shall be cut into lengths of approximately 10 feet or less for disposal.
Pipe larger than 12 inches in diameter shall be longitudinally split or cut, or filled with grout.
7.3.8 Organic Debris
Organic materials (such as wood and paper) will be placed in the disposal cell in maximum lifts
of 12 inches and mixed with the soil and other incompressible debris during placement to prevent
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pockets of organic material from being created. Organics mixed with soil for spreading will be
limited to 30 percent by volume of the mixture.
7.3.9 Soils and Similar Materials
Soils and soil-like materials to be placed in the disposal cell will be from on-site areas identified
by the Owner for excavation. Soil or soil-like material will be placed and compacted over each
lift of debris (Section 7.2.4) or other materials in lifts not to exceed 2 feet in loose thickness and
compacted prior to placement of additional lifts. Soils will also be used for interim soil cover to
minimize exposure of demolition materials and other materials to air and meteoric water.
7.4 Performance Standards and Testing
7.4.1 Material Compaction – Debris Lifts
During construction, the compaction requirements for the raffinate crystals will be evaluated based
on field conditions, material quantities, and compaction equipment. The compaction requirements
will be determined by the CQA Site Manager and the Construction Manager or a designated
representative, with the agreement of the Owner.
Each lift of debris (up to 2 feet thick) will be covered with soil (Section 7.3.9) (up to 2 feet in loose
thickness). Each lift of soil or similar material will be compacted with a minimum of 6 passes
with vibratory compaction equipment. The number of passes shall be confirmed with the actual
compaction equipment on site with a field test section to establish a correlation between the field
compaction method and 80 percent of maximum dry density for the soil, as determined by the
standard Proctor test (ASTM D698).
The CQA Technicians will monitor and approve debris placement. In areas where voids are
observed during placement, the Contractor shall re-excavate the area, fill any voids encountered
with soil and recompact the materials, or grout the voids. The CQA Site Manager will recommend
implementation of a grouting program where voids, either within a debris mass, or within a vessel,
cannot be properly filled with soil using conventional equipment.
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7.4.2 Material Compaction – Final Disposed Material Surface
The upper 12 inches of the final disposed material surface shall be compacted to 90 percent of the
maximum dry density for the material, as determined by the standard Proctor test (ASTM D698).
7.4.3 Testing Frequency
Field density tests shall be compared with standard Proctor tests (ASTM D698 Method A or C) on
the same material. Standard Proctor tests shall be conducted at a frequency of at least one test per
5,000 cubic yards of material compacted, or when material characteristics show significant
variation.
Field density testing may be conducted with the sand cone test (ASTM D1556) or a nuclear density
gauge (ASTM D6938, or as modified by the CQA Site Manager). Correlation of nuclear density
gauge results shall be by comparison with results from sand cone test(s) and laboratory testing for
water content(s) using the oven drying method (ASTM D2216) on similar material.
The frequency of the field density and moisture tests will be not less than one test per 2,000 cubic
yards of compacted soil. A minimum of two tests will be taken for each day that more than 150
cubic yards of material is placed. A minimum of one test per lift and at least one test for every full
shift of compaction operations will be taken.
7.4.4 Final Slope and Grades
The final disposed material surface shall have maximum side slopes of 5:1 (H:V) and a top surface
sloping in the directions and grades shown on the Drawings. The side slopes and top surface shall
be free from abrupt changes in grade or areas of runoff concentration. The final disposed material
surface shall be compacted with approved construction equipment to form a smooth surface with
uniform density for subsequent cover placement.
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8.0 COVER CONSTRUCTION
8.1 General
This section outlines work associated with construction of the cell cover system. A multi-layered
earthen cover will be placed over tailings Cells 2, 3 and 4A and a portion of Cell 1 used for disposal
of contaminated materials (the Cell 1 Disposal Area).
8.2 Materials Description
8.2.1 Random Fill
The random fill for the interim fill, compacted cover, and growth medium layers will consist of
on-site stockpiled soils from areas designated by the Owner. Random fill, except for the interim
fill, shall have a maximum particle size of 6 inches, and a minimum of 10 percent passing the No.
200 sieve. Oversized material will be controlled through selective excavation at the stockpiles and
through the utilization of a grader, bulldozer or other equipment to cull or break down oversized
materials.
The source of these materials will be on-site stockpiles from previous cell construction activities.
On-site stockpiles shall be approved for specific use by the Construction Manager and Design
Engineer prior to use.
8.2.2 Organic Matter Amendment
Composted biosolids will be used to amend the physical and chemical properties of the random
fill used to construct the growth medium layer (Section 8.3.7). Composted biosolids will be
added to the upper 6 inches of the growth medium layer at a rate of 10 tons/acre.
8.2.3 Topsoil-Gravel Admixture
Gravel will be mixed with topsoil and placed on portions of the cover on Cells 2, 3, 4A, and 4B
top surfaces (as shown on the Drawings) as the erosion protection layer. Topsoil-gravel admixture
material shall be shall be free from roots, branches, rubbish, and debris.
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The gravel portion of the topsoil-gravel admixture will consist of granular materials from approved
off-site areas. The gravel portion of the topsoil-gravel admixture shall have a maximum particle
size of 1 inch.
The topsoil portion of the topsoil-gravel admixture will consist of select material from the on-site
topsoil borrow area (Section 3.4). The mixture shall be 25 percent gravel by weight.
8.2.4 Riprap
Riprap will be placed along the toe of the disposal cell and the tailings cells (as shown on the
Drawings). Riprap will consist of granular materials from approved off-site sources. Riprap shall
be shall be a screened product, free from roots, branches, rubbish, and debris.
Riprap shall meet NRC long-term durability requirements (a rock quality designation of 65 or
more; Johnson, 2002). For a rock quality designation of 70 or higher, the particle-size
specifications below shall be used. If actual rock quality designation is between 65 and 69,
oversizing will be required.
Designated gradations for the riprap will be as specified on the Drawings. Riprap will be imported
from off-site.
• Side Slope riprap shall have a minimum D50 as listed below and a minimum layer
thickness of 1.5 times the D50 or the D100 of the riprap, whichever is greater:
o 1.7 in. for non-accumulating flow side slopes
o 5.3 in. for Cell 4A and Cell 4B southern side slopes
o 5.3 in. for Cell 1 Disposal Area side slope
• Riprap used in the rock aprons shall have a minimum D50 as listed below and a minimum
layer thickness of 1.5 times the D50 or the D100 of the riprap, whichever is greater
o 3.4 in. for Rock Apron A
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o 10.6 in. for Rock Apron B
o 9.0 in. for Rock Apron C
8.2.5 Filter Material
Filter material shall be shall be free from roots, branches, rubbish, and debris. The filter material
shall meet the gradation specifications in Table 8.1.
Table 8.1 – Filter Material Gradation
Sieve Size Percent Passing,
By Weight
3-inch 100
No. 4 70-100
No. 20 40-60
No. 200 0-5

8.2.6 Topsoil
Topsoil will consist of select material from the designated, on-site topsoil borrow area (Section
3.4).
8.3 Work Description
The Contractor will place cover materials based on a schedule determined by the Owner and the
Owner’s analysis of settlement data, piezometer data and equipment mobility considerations.
Settlement monitoring points will be established and monitored in accordance with Sections 8.3.1
to 8.3.3 and the Settlement Monitoring Plan approved by DWMRC for the site.
Cover construction shall minimize lenses, pockets, or layers of material differing substantially in
texture, gradation or moisture content from the surrounding material. Oversized material will be
controlled through selective excavation of stockpiled material, observation of placement by a
qualified individual with authority to stop work and reject material being placed and by culling
oversized material from the fill.
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If the compacted surface of any layer of fill is too dry or smooth to bond properly with the layer
of material to be placed thereon, it will be moistened and/or reworked with suitable equipment to
a sufficient depth to provide relatively uniform moisture content and a satisfactory bonding surface
before the next succeeding layer of fill is placed. If the compacted surface of any layer of fill in-
place is too wet, due to precipitation, for proper compaction of the fill material to be placed thereon,
the material will be reworked to reduce the moisture content to the specified range and
recompacted.
No material will be placed when either the material being compacted, or the underlying material,
is frozen or when ambient temperatures do not permit the placement or compaction of the materials
to the specified density, without developing frost lenses in the fill.
8.3.1 Monitoring Interim Cover Settlement
The existing settlement monitoring points located within tailings disposal cells will be maintained
by extending them through additional fill placement. For areas without settlement monitoring
points, settlement monitoring points will be installed to monitor settlement of the interim cover
surface and will be constructed as specified in the DWMRC approved Settlement Monitoring Plan.
Settlement data will be collected and analyzed; and the reclamation techniques and schedule will
be adjusted accordingly.
8.3.2 Monitoring Final Cover Settlement
After placement of final cover material, settlement plates will be extended or will be installed to
monitor settlement of the final cover surface. The settlement plates will be constructed as specified
in the DWMRC approved Settlement Monitoring Plan.
8.3.3 Monitoring Settlement Points
Settlement monument placement and data collection will be made in accordance with the DWMRC
approved Settlement Monitoring Plan.
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8.3.4 Interim Fill Layer
The interim fill layer will have a minimum thickness of 2.5 feet and will be placed over the tailings
surface to form a stable working platform for subsequent controlled fill placement. This interim
fill layer will be placed by pushing random fill material across the tailings such that the underlying
tailings are displaced as little as possible. Interim fill will be placed in lifts of 12-inch maximum
loose thickness to form a uniform subsoil layer for the cover system. A rough surface will be
maintained on the surface of each lift.
8.3.5 Compacted Cover Layer
The compacted cover layer shall be constructed of random fill placed in lifts with a maximum
loose thickness of 12 inches to form a continuous layer with a total minimum compacted layer
thickness of 36 to 48 inches, as indicated in the Drawings. A rough surface will be maintained on
the surface of each lift.
8.3.6 Growth Medium Layer
The growth medium layer shall be constructed of random fill placed to a minimum of 42 inches
thick, above the compacted cover layer in lifts of 18-inch maximum loose thickness. If oversized
material is observed during the excavation of fill material, it will be removed, as far as practicable,
before it is placed in the fill. A rough surface will be maintained on the surface of all but the
uppermost lift.
8.3.7 Organic Matter Amendment
Composted biosolids will be applied prior to the placement of the erosion protection layer (topsoil
or the topsoil-gravel admixture). Composted biosolids will be uniformly spread over the surface
of the growth medium layer and mixed to a depth of 6 inches.
8.3.8 Erosion Protection Layer: Topsoil-Gravel Admixture
The topsoil and the gravel admixture shall be 75 percent topsoil - 25 percent gravel admixture (by
weight). The mixture shall be prepared (mixed) prior to transport to the placement areas.
Gradation samples will be collected at the point of placement to verify the mixture’s content. The
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CQA Site manager will approve the Contractor’s proposed method of mixing based on the
gradation results during initial placement.
The mixture shall be placed in one loose lift to form a uniform layer with a final thickness of 6
inches on the slope surfaces of the disposal cell (shown on the Drawings). The topsoil-gravel
admixture shall be spread with tracked equipment.
The erosion protection layer will not be amended for organic matter or nutrients to avoid the
stimulation of undesirable weedy species.
Following placement of the topsoil-gravel admixture erosion protection layer, the area shall be
harrowed to reduce any compaction that may have occurred during placement of the cover and to
create an uneven surface for optimum seedbed conditions.
8.3.9 Erosion Protection Layer: Topsoil
Topsoil (Section 8.2.6) shall be placed in one loose lift to form a uniform layer with a final
thickness of 6 inches on the top and side slope surfaces of the disposal cell (shown on the
Drawings). The topsoil shall be spread with tracked equipment.
The erosion protection layer will not be amended for organic matter or nutrients to avoid the
stimulation of undesirable weedy species.
Following placement of the topsoil layer, the area will be harrowed to reduce any compaction that
may have occurred during placement of the cover and to create an uneven surface for optimum
seedbed conditions.
8.3.10 Riprap and Filter Material Placement
The side slopes of the reclaimed cover will be protected by rock surfacing. Riprap (Section 8.2.4)
and filter material (Section 8.2.5) shall be placed in one or more lifts to the depths outlined in the
Drawings and using the methods outlined below. The Drawings show the location of riprap with
the size and thickness requirements for the various side slopes and aprons.
Filter material and riprap shall be handled, loaded, transported, stockpiled, and placed in a manner
that minimizes segregation. Riprap and filter material shall be placed in or near its final location
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by dumping, then spread with a small dozer, the bucket of a trackhoe, or other suitable equipment.
Riprap and filter material shall be placed and spread in a manner that minimizes displacement of
underlying cover soils, natural soils, or filter material. Each layer of riprap and filter material shall
be track-walked with a small dozer, tamped with the bucket of a trackhoe, or densified by other
approved methods.
Placement of the riprap will avoid accumulation of riprap sizes less than the minimum D50 size
and nesting of the larger sized rock. The riprap layer will be compacted by at least two passes by
a dozer, tamping with the bucket of a trackhoe, or equivalent methods in order to key in the rock
particles for stability. The completed layer of filter material shall be well-graded in particle-size
distribution and free from pockets of smaller material and free from large voids or loose areas.
8.4 Performance Standard and Testing
8.4.1 Compacted Cover Layer Testing
Each lift of the compacted cover layer shall be compacted to at least 95 percent of the maximum
dry density for the material, as determined by the standard Proctor test (ASTM D698). Water
contents shall be adjusted, as needed, to meet the density requirements.
Material specifications for the random fill material shall be confirmed by gradation testing
conducted by approved personnel. Testing shall consist of No. 200 sieve wash and particle-size
distribution testing (ASTM D422) at a frequency of at least one test per 2,000 cubic yards of fill
placed, or when material characteristics show a significant variation.
Checking of compaction shall consist of a minimum of one field density test per 500 cubic yards
of material compacted. A minimum of two tests shall be taken for each day that more than 150
cubic yards of material is placed. A minimum of one test per lift and at least one test for every full
shift of compaction operations will be taken.
Field density tests shall be compared with standard Proctor tests (ASTM D698 Method A or C) on
the same material. Standard Proctor tests shall be conducted at a frequency of at least one test per
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5,000 cubic yards of material compacted, or when material characteristics show significant
variation.
Field density testing may be conducted with the sand cone test (ASTM D1556) or a nuclear density
gauge (ASTM D6938, or as modified by the CQA Site Manager). Correlation of nuclear density
gauge results shall be by comparison with results from sand cone test(s) and laboratory testing for
water content(s) using the oven drying method (ASTM D2216) on similar material.
8.4.2 Growth Medium Layer Testing
Each lift of the growth medium layer shall be compacted to at least 85 percent of the maximum
dry density for the material, as determined by the standard Proctor test (ASTM D698). Water
contents shall be adjusted, as needed, to meet the density requirements.
Material specifications for the random fill for water storage layer shall be confirmed by gradation
testing conducted by approved personnel. Testing shall consist of No. 200 sieve wash and particle-
size distribution testing (ASTM D422) at a frequency of at least one test per 2,000 cubic yards of
fill placed, or when material characteristics show a significant variation.
The frequency of the field density tests will be not less than one test per 2,000 cubic yards of
compacted fill. A minimum of two tests will be taken for each day that more than 150 cubic yards
of material is placed. A minimum of one test per lift and at least one test for every full shift of
compaction operations will be taken.
Field density tests shall be compared with standard Proctor tests (ASTM D698 Method A or C) on
the same material. Standard Proctor tests shall be conducted at a frequency of at least one test per
10,000 cubic yards of material compacted, or when material characteristics show significant
variation.
Field density testing may be conducted with the sand cone test (ASTM D1556) or a nuclear density
gauge (ASTM D6938, or as modified by the CQA Site Manager). Correlation of nuclear density
gauge results shall be by comparison with results from sand cone test(s) and laboratory testing for
water content(s) using the oven drying method (ASTM D2216) on similar material.
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8.4.3 Topsoil-Gravel Admixture Testing
The gradation specifications for the topsoil-gravel admixture (Section 8.2.3) shall be confirmed by
gradation testing, on samples collected from the point of placement (on the top deck). Testing
shall consist of particle-size distribution testing (ASTM D422) at a frequency of at least one test
per 2,000 cubic yards of mixture placed, or when the characteristics of the mixture show a
significant variation. The CQA Site Manager may choose to increase the frequency of testing at
the beginning of placement to evaluate the mixing method proposed by the Contractor.
Topsoil-gravel admixture thickness will be controlled through the establishment of grade stakes
placed on a 200 x 200 foot grid on the top of the cells and by a 100 x 100 foot grid on the cell
slopes. Physical checks of topsoil-gravel admixture depth will be accomplished through the use
of hand dug test pits at the center of each grid in addition to monitoring the depth indicated on the
grade stakes.
8.4.4 Riprap Testing
Material specifications for the riprap shall be confirmed by gradation testing conducted by the
CQA Technician. Testing shall consist of particle-size distribution testing (ASTM D422) at a
frequency of at least one test per 2,000 cubic yards of rock delivered to the site, or when rock
characteristics show a significant variation.
Rock layer thickness will be controlled through the establishment of grade stakes placed on a 200
x 200 foot grid on the top of the cells and by a 100 x 100 foot grid on the cell slopes. Physical
checks of riprap depth will be accomplished through the use of hand dug test pits at the center of
each grid in addition to monitoring the depth indicated on the grade stakes.
The durability of the riprap shall be verified by durability tests outlined in Section 8.4.7.
8.4.5 Filter Material Testing
Material specifications for filter material (Section 8.2.5) shall be confirmed by gradation testing
conducted by CQA Technician. Testing shall consist of No. 200 sieve wash and maximum particle
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size testing (ASTM D422) at a frequency of at least one test per 10,000 cubic yards of fill placed,
or when material characteristics show a significant variation.
Filter layer thickness will be established during construction with grade stakes placed on a grid or
centerline and offset pattern and layer thickness marks on each grade stake. The minimum
thickness of the layer will be verified by spot checking of layer thickness by hand excavation in
selected locations.
8.4.6 Rock Durability Testing
For riprap materials, each load of material will be visually checked against standard piles for
gradation prior to transport to the tailings piles. Prior to delivery of any riprap materials to the
site, rock durability tests will be performed for each gradation to be used. Test series for riprap
durability will include specific gravity, absorption, sodium soundness and LA abrasion. During
construction, additional test series and gradations will be performed for each type of riprap when
approximately one-third (1/3) and two-thirds (2/3) of the total volume of each type have been
produced or delivered. For any type of riprap where the volume is greater than 30,000 cubic yards,
a test series and gradations will be performed for each additional 10,000 cubic yards of riprap
produced or delivered.
8.5 Surface Slopes and Grades
The final cover surface shall have maximum side slopes of 5:1 (H:V) and a top surface sloping in
the direction and grade shown on the Drawings. The side slopes and top surface shall be free from
abrupt changes in grade or areas of runoff concentration. The perimeter apron at the toe of the
side slopes shall have the dimensions as shown on the Drawings.
8.6 Grading Tolerances
The completed cover surface shall be constructed to within 1.0 foot (horizontally) of the lines as
designed, and within 0.1 foot (vertically) of the elevations as designed. The final surface of the
subsoil zone shall be smoothed to avoid abrupt changes in surface grade. The layer thicknesses
shall meet the required minimum thicknesses.
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The completed riprap shall be placed to within 5.0 foot (horizontally) of the layout as designed,
and within 0.5 foot (vertically) of the elevations as designed. The rock layer thicknesses shall
meet the minimum requirements.
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9.0 REVEGETATION
9.1 General
Following topsoil placement, the cover surface and other areas disturbed during reclamation work
will be revegetated. This section outlines the requirements for vegetation establishment where
required. This section may be revised as necessary based on field requirements and soil nutrient
analyses at the time of revegetation.
9.2 Materials Description
The soil amendments, seed mixture, and erosion control materials for revegetation are outlined
below. Submittals for each of the following products shall be provided to the Owner for approval
prior to use of such products.
9.2.1 Soil Amendments
The proposed application rate may be adjusted up or down based on soil chemical analysis that is
conducted prior to placement of the water storage layer.
Composted biosolids shall be added at a rate of 10 tons/acre and uniformly spread over the surface
of the water storage layer and mixed to a depth of 15 cm. This treatment will be applied after the
water storage layer is in-place and before placement of the erosion protection layer.
9.2.2 Seed Mix
Species selection for the seed mixture was based on native vegetation found in the area as well as
soil and climatic conditions of the Mill site. Changes to the seed mixture will be as approved by
the Owner. The seed mixture in Table 9.1 shall be used on all seeded areas.

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Table 9.1. Species and seeding rates proposed for Mill site.
Scientific Name Common Name Varietal
Name Native/
Introduced
Seeding Rate (lbs PLS/acre)†
Seeding Rate (# seeds/ft2)
Grasses
Pascopyrum smithii Western wheatgrass Arriba Native 3.0 7.9
Pseudoroegneria
spicata Bluebunch wheatgrass Goldar Native 3.0 9.6
Elymus trachycaulus Slender wheatgrass San Luis Native 2.0 6.2
Elymus lanceolatus Streambank wheatgrass Sodar Native 2.0 7.3
Elymus elymoides Squirreltail bottlebrush Toe Jam Native 2.0 8.8
Thinopyrum intermedium Pubescent wheatgrass Luna Introduced‡ 1.0 1.8
Achnatherum hymenoides Indian ricegrass Paloma Native 4.0 14.7
Poa secunda Sandberg bluegrass Canbar Native 0.5 11.4
Festuca ovina Sheep fescue Covar Introduced‡ 1.0 11.5
Bouteloua gracilis Blue grama Hachita Native 1.0 16.5
Hilaria jamesii Galleta Viva Native 2.0 7.3
Forbs
Achillea millefolium, variety occidentalis Common yarrow
VNS*
Native 0.5 32
Artemisia ludoviciana White sage VNS Native 0.5 45
Shrubs
Atriplex canescens Fourwing saltbush Wytana Native 3.0 3.4
Ericameria nauseosa Rubber rabbitbrush VNS Native 0.5 4.6
Total 26.5 188
†Seeding rate is for broadcast seed and presented as pounds of pure live seed per acre (lbs PLS/acre).
‡Introduced refers to species that have been ‘introduced’ from another geographic region, typically outside of North America. Also referred to as ‘exotic’ species.
*VNS=Variety Not Specified and seed source will be from sites that are climatically similar to White Mesa.
Seed shall be purchased as pounds of pure live seed and will be certified by the Utah State
Department of Agriculture and Food. Certification will verify that the seed is correctly identified
and genetically pure. Once the seed is obtained, seed labels will be checked to determine the
percent PLS and the date that the seed was tested for percent purity and percent germination. If
the test date is greater than 6 months old, the seed will be tested again before being accepted.
9.2.3 Erosion Control Materials
Wood fiber mulch will consist of specially prepared wood fibers and will not be produced from
recycled material such as sawdust, paper, cardboard, or residue from pulp and paper plants. The
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fibers will be dyed an appropriate color, with non-toxic, water-soluble dye to facilitate visual
metering during application. Wood-fiber mulch will be supplied in packages and each package
will be marked by the manufacturer to show the air-dry weight.
A tackifier will be used with the wood-fiber mulch to improve adhesion. The tackifier will be a
biodegradable organic formulation processed specifically for the adhesive binding of mulch. In
addition, the tackifier will uniformly disperse when mixed with water and will not be detrimental
to the homogeneous properties of the mulch slurry.
9.3 Work Description
Revegetation efforts shall be directed at all reclaimed and disturbed areas. The goal of the
revegetation plan is to ensure that a self-sustaining vegetative community is established.
9.4 Soil Amendment Application
Following final placement and grading of the frost barrier layer, amendments will be applied as
discussed in Section 9.2.1. Inorganic sources of nitrogen, phosphorus, and potassium will not be
applied to the soil because composted biosolids will provide all the macronutrients required for
long-term sustainability.
9.5 Growth Zone Preparation
A favorable seedbed shall be prepared on the topsoil layer or topsoil-rock mixture, prior to seeding
operations. The soil shall be loose and friable so as to maximize contact with the seed. The soil
will be tilled, following site contours with a disc or harrow (or similar approved equipment) to a
maximum depth of 6 inches. The depth of valleys and the height of ridges caused by the final
tillage operations are not to exceed 3 inches.
9.6 Seed Application
Seeding will follow the application of soil amendments and seedbed preparation, by broadcast
spreading method. This procedure will use a centrifugal type broadcaster (or similar implement),
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also called an end gate seeder. The broadcasters will have a minimum effective spreading width
of 20 feet. Seed will be applied in two separate passes. One-half of the seed will be spread in one
direction and the other half of seed will be spread in a perpendicular direction. This will ensure
that seed distribution across the site is highly uniform and also provide the opportunity to adjust
the seeding rate if the specified rate is not being achieved. Seeding will not occur if wind speeds
exceed 10 mph.
Immediately following seeding, the area will be lightly harrowed to provide seed coverage and to
maximize seed-soil contact. Broadcast seed shall be harrowed into the soil to a depth of 0.25 to
0.75 inches.
Seeding will take place as soon as practical after the cover system is in place. Successful seeding
in southeastern Utah can occur either in late fall (e.g. October) as a dormant seeding, with
germination and establishment occurring the following spring or can be conducted in June, prior
to the summer monsoon season. Timing for seeding will depend upon the construction schedule
for the cover system.
9.7 Erosion Control Material Application
Mulch will be applied immediately following seeding. A weed-free, wood-fiber mulch shall be
applied to the seeded area at a minimum rate of 1.5 tons/acre. The wood-fiber mulch will be
applied by means of hydraulic equipment that utilizes water as the carrying agent. A continuous
agitator action, that keeps the mulching material and approved additives in uniform suspension,
will be maintained throughout the distribution cycle.
The pump pressure will be capable of maintaining a continuous non-fluctuating stream of slurry.
The slurry distribution lines will be large enough to prevent stoppage and the discharge line will
be equipped with a set of hydraulic spray nozzles that will provide even distribution of the mulch
slurry to the seedbed. Mulching will not be done in the presence of free surface water resulting
from rains, melting snow, or other causes. Tackifier may be added either during the manufacturing
of the mulch or incorporated during mulch application.
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9.8 Performance Standard and Testing
The following section describes performance-based criteria for successful revegetation.
9.8.1 Seeding Rates
Prior to seeding, a known area will be covered with a tarp and seed will be distributed using the
broadcaster and simulating conditions that would exist under actual seeding conditions. Seed will
then be collected and weighed to determine actual seeding rate in terms of pounds per acre. This
process will be repeated until the specified seeding rate is obtained.
During the seeding process, the seeding rate will be verified at least once by comparing pounds of
seed applied to the size of the area seeded.
9.8.2 Erosion Control
The cover shall be inspected two times per year for eroded areas. Any area that has experienced
erosion shall be backfilled and reseeded. Erosion control materials shall also be reapplied over
reseeded areas.
9.8.3 Weed Control
Weed management will be conducted on the Mill site by identifying the presence of any noxious
weeds during annual vegetation surveys and developing a weed control plan that is specific to the
species that are present (Table 9.2). Noxious weed control is species-dependent and both method
and timing will vary from species to species.

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Table 9.2. Noxious weed species.
Scientific Name Common Name
Utah State—Listed Noxious Weeds
Acroptilon repens Russian knapweed
Cardaria spp. Whitetop (all species)
Carduus nutans Musk thistle
Centaurea diffusa Diffuse knapweed
Centaurea solstitialis Yellow star thistle
Centaurea stoebe ssp. micranthos Spotted knapweed
Centaurea virgate ssp. Squarrosa Squarrose knapweed
Cirsium arvense Canada thistle
Convolvulus spp. Bindweed (all species)
Cynodon dactylon Bermuda grass
Elymus repens Quackgrass
Euphorbia esula Leafy spurge
Isatis tinctoria Dyer’s woad
Lepidium latifolium Broadleaf pepperweed
Lythrum salicaria Purple loosestrife
Onopordum acanthium Scotch thistle
Sorghum almum Perennial sorghum (all species)
Taeniatherum caput-medusae Medusahead
San Juan County—Listed Noxious Weeds
Aegilops cylindrical Jointed goatgrass
Alhagi maurorum Camelthorn
Asclepias subverticillata Western whorled milkweed
Solanum elaeegnifolium Silverleaf nightshade
Solanum rostratum Buffalobur

Each survey will identify noxious weed populations and locate these populations on a map using
a set of symbols to identify species, size of the infestation, and density of the population. The
effectiveness of control methods will be documented in each annual survey. In addition,
immediately adjacent off-site properties will be visually surveyed to a distance of 100 feet.
Inspections will be conducted by personnel familiar with the identification of noxious weeds in
the area and based on Utah’s Noxious Weed List.
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The selected control methods will be based on the type, size, and location of the mapped noxious
weeds. The treated area(s) will be monitored and re-inspected annually for new weed introductions
and to evaluate the success of the control methods. Prevention is the highest priority weed
management practice on non-infested lands; therefore protecting weed-free plant communities is
the most economical and efficient land management practice. Prevention is best accomplished by
ensuring that new weed species seed or vegetative reproductive plant parts of weeds are not
introduced into new areas, and by early detection of any new weed species before they begin to
spread.

Control methods may include chemical or mechanical approaches. The optimum method or
methods for weed management vary depending on a number of site-specific variables such as
associated vegetation, weed type, stage of growth, and severity of the weed infestation.

Chemical Control
Chemical control consists mostly of selective and non-selective herbicides. Considerations for
chemical controls include: herbicide selection, timing of application, target weed, desirable plant
species being grown or that will be planted, number of applications per year and number of years
a particular species will need to be treated for desired control. Also important are the health and
safety factors involved, and the need to consider undesirable impacts. The use of herbicides will
be in compliance with all Federal and State laws on proper use, storage, and disposal. The
chemical application will be done by a licensed contractor in accordance with all applicable laws
and regulations and all label instructions will be strictly followed. Applications of herbicides will
not be permitted when the instructions on the herbicide label indicate conditions that are not
optimal.

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Mechanical Control
Mechanical control is the physical removal of weeds from the soil and includes tilling, mowing,
and pulling undesirable plant species. Tillage is most effective prior to seeding and establishment
of desirable vegetation. The tillage method of weed control can be effective in eliminating noxious
perennial weeds when repeated at short intervals (every 1-2 weeks) throughout the growing season.
Tillage has the drawback of indiscriminately impacting all vegetation interspersed with weeds in
established areas and can eliminate competitive, desirable vegetation leaving behind a prime
seedbed for weeds to reinvade. Mowing can be an effective method for controlling the spread of
an infestation and preventing the formation and dispersal of seeds. Mowing is most effective on
weeds which spread solely or primarily by seed. In order to achieve this, mowing must be repeated
at least twice during the growing season prior to, or shortly after bloom. Also, even the most
intense mowing treatment will not kill hardy perennial weeds. Additional considerations will be
made when selecting control treatments when specific situations arise regarding type, size, and
location of weed infestations. Examples of this are perennial versus biennial, broadleaf versus
grasses, noxious weeds interspersed with desirable vegetation, large monoculture patches, or small
patches requiring spot treatment.

Treatment windows schedules, based on the control methods chosen and the noxious weeds
present, will be established for each treatment area. The best time to treat perennial noxious weeds
is in the spring or fall during their active growth phase. Different species will have different
optimum treatment times even with the same type of control. Perennial weeds usually grow
vegetative in the spring, flower and seed in late spring and early summer, enter dormancy during
the summer and actively grow again in the fall. The treatment windows selected will depend on
the species present and control methods selected.

The final preparatory step is to determine the priority for areas to be treated. Prioritization ensures
that the most important areas are dealt with at the most effective times. Important areas of concern
include areas that may transport weed seeds. These areas include ditches, roadsides, and land
equipment storage sites. Large monoculture patches are of concern wherever they occur and will
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always be high priority. Also, small patches of weeds will be treated to prevent expansion of weed
populations.

Once the treatment plan is implemented, detailed records will be kept, and success or failure of
treatment will be recorded so as to eliminate unsuccessful treatments.

9.8.4 Vegetation Establishment Performance
The following Revegetation Acceptance Goals/Criteria have been adapted from the Monticello
Site and will be used at the Mill site to determine reclamation success.
Revegetation Acceptance Goal/Criteria:
Criterion 1 Species Composition
a. The vegetative cover (the percentage of ground surface covered by live plants) shall
be composed of a minimum of five perennial grass species (at least four listed as
native), one perennial forb species, and two shrub species listed in Table 9.1.
Criterion 2 Vegetative Cover
a. Attain a minimum vegetative cover percentage of 40 percent.
b. Individual grass and forb species listed in Table 9.1 that are used to achieve the cover
criteria shall have a minimum relative cover (the cover of a plant species expressed as
a percentage of total vegetative cover) of 4 percent and a maximum relative cover of
40 percent.
c. Individual species not listed in Table 9.1 may be accepted as part of the cover criteria
if it is demonstrated that the species is native or adapted to the area and is a desirable
component of the reclaimed project site.
d. Species not listed in Table 9.1, including annual weeds or other undesirable species
such as those listed in Table 9.2, shall not count toward the minimum vegetative
cover requirement. Every attempt shall be made to minimize establishment of all
noxious weeds.
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e. Reclaimed areas shall be free of state- and county-listed noxious weeds (Table 9.2).
f. The vegetative cover shall be self-regenerating and permanent. Self-regeneration
shall be demonstrated by evidence of reproduction, such as tillers and seed
production.

Criterion 3 Shrub Density
a. A minimum shrub density of 500 stems per acre.
b. Shrubs shall be healthy and have survived at least two complete growing seasons
before being evaluated against success criteria.

Plant cover will be measured annually on the tailing cells for a minimum of ten years or until the
revegetation goals stated above are achieved. Cover will be measured by the point method, using
a vegetation sighting scope mounted on an adjustable tripod with a level. Cover will be measured
for each species encountered, as well as litter, rock, and bareground. Cover measurements will be
made along a minimum of ten randomly placed transects on each tailing cell that are 100 feet long.
A total of 100 points will be sited at one-foot intervals along each transect to collect cover data in
the categories of live vegetation, litter, rock, and bareground. Sample adequacy will be determined
for each tailing cell using the following formula that identifies the minimum number of samples
that are necessary to estimate the population mean at a 90 percent level of confidence. Total live
vegetation cover will be used to calculate sample adequacy.

n = t2s2
(.10x)2

Where: n = minimum number of samples required to meet sample adequacy requirements
s2 = variance
t2 = 1.64 for 90% confidence
x = sample mean

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Shrub density will be measured in belt transects placed on either side of the cover transects. All
shrubs will be counted within a three-foot wide strip or belt transect along each side of the transect
used for point cover measurements, resulting in a belt transect that is six-feet wide and 100 feet
long.

In addition to the above cover sampling, annual observations will be made of overall plant
community health and sustainability. Overall health will be based on plant vigor, presence of
annual weeds, and signs of plant deficiencies or toxicities. Plant community sustainability will be
based on observations of reproduction, including both vegetative reproduction, such as tillering,
and seed production.

If revegetated areas are not making satisfactory progress in meeting revegetation goals outlined
above, then remedial actions will be implemented as needed. These actions may include
fertilization/soil amendments, reseeding, weed control, and/or erosion control depending upon the
cause of the problem that may exist and the best remediation approach to ensure plant community
success.
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10.0 REFERENCES
American National Standards Institute (ANSI) 1997. ANSI N323A American National Standard
Calibration Standard Radiation Protection Instrumentation Test and Calibration, Portable
Survey Instruments.
Denison Mines (USA) Corp. 2009. Reclamation Plan White Mesa mill, Blanding Utah, Rev. 4.
November.
Johnson, T.L., 1999. “Design of Protective Covers.” U.S. Nuclear Regulatory Commission (NRC),
NUREG 2615 Draft for Comment. February.
Johnson, T.L., 2002. “Design of Erosion Protection for Long-Term Stabilization.” U.S. Nuclear
Regulatory Commission (NRC), NUREG 1623, Final Report. September.
National Oceanic and Atmospheric Administration (NOAA), 1977. Probable Maximum
Precipitation Estimates, Colorado River and Great Basin Drainages. Hydrometerological
Report (HMR) No. 49.
SENES 2012. Letter to J.A. Tischler, Energy Fuels Resources, Inc. Radium Benchmark Dose
Approach. August 15, 2012, as provided in EFRI Responses to Utah DRC Interrogatories
Round 1. August 2012.
United States Nuclear Regulatory Commission (NRC), 1990. “Final Staff Technical Position,
Design of Erosion Protective Covers for Stabilization of Uranium mill Tailings Sites.”
January.
United States Nuclear Regulatory Commission (NRC) 2000. Multi-Agency Radiation Survey and
Site Investigation Manual. NUREG-1575. August.
United States Nuclear Regulatory Commission (NRC). 2003. NUREG 1569, Appendix E,
Guidance to the U.S. Nuclear Regulatory Commission Staff on the Radium Benchmark
Dose Approach.
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United States Nuclear Regulatory Commission (NRC). 2006 NUREG 1757 Volume 2,
Consolidated Decommissioning Guidance, Characterization, Survey, and Determination of
Radiological Criteria. Revision 1.
United States Nuclear Regulatory Commission (NRC). 2009 NUREG 1575 Supplement 1, Multi-
Agency Radiation Survey and Assessment of Materials and Equipment Manual.
Yu, C., Zielen, A.J., Cheng, J-J, Le Poire, D.J., Gnanapragasam, E., Kamboj, S., Arnish, J., Wallo
III, A., Williams, W.A., and Peterson, H., 2001. User’s Manual for RESRAD Version 6.
ANL/EAD-4. July.

August 2016

Exhibit A-1:
Daily QA/QC Checks

August 2016
1.0 INTRODUCTION
A background count rate and reliability check using a check source shall be performed daily, prior
to use, when the detector/scaler is used for counting. Background count rates and source checks
shall be input on a control chart after developing of the mean and standard deviation (sigma) as
discussed below.
2.0 QC CONTROL CHARTING
Select a background location such as an office or other location where background gamma
radiation gamma values are not expected to vary. Take ten 30-second count readings and record
them on Form 1. Using the ten readings, calculate the mean, sigma, and 2 sigma). These results
shall also be recorded on Form 1.
Daily, prior to use, and at the end of surveys, perform a 30-second background and source count
at the same location and in the same configuration as the acceptable ranges were developed. If the
background or source check result exceeds a difference of two standard deviations, (2s or 2 sigma)
from the mean, as shown on Figure 2, the Instrument Control Chart, re-count the background or
source, log the results, and enter the new data on the Instrument Control Chart. Two successive
background or source check counts outside the 2s Instrument Control Chart range indicates
possible problems with the detector/electronics.
Values between ± 2s of the mean net counts generally indicate normal operation of the instrument.
Values outside the mean ± 2s will occur with a frequency of less than 5 percent. Values greater
than 3s from the mean will occur with a frequency of less than one percent and should be
investigated. Two consecutive measurements outside 3s indicate problems with equipment and
require adjustments and/or repairs as necessary. The scaler shall be removed from service and
immediate notification shall be made to the RSO or designee prior to counting any samples.
Calibrations shall be checked whenever a significant change or repair is made to the measurement
system, or when changes are detected as a result of check source measurements.

August 2016
Control charts shall be maintained to indicate instrument operability and/or malfunction problems
on a daily basis when instruments are in use. Use the attached control chart. Control charts should
be kept for both background counts and counts with a check source, such as a 5 µCi Cs-137 source.

August 2016

FORM 1: CALCULATION OF INSTRUMENT STANDARD DEVIATION
Date of 1st Instrument
Use Co
u
n
t

1

Co
u
n
t

2

Co
u
n
t

3

Co
u
n
t

4

Co
u
n
t

5

Co
u
n
t

6

Co
u
n
t

7

Co
u
n
t

8

Co
u
n
t

9

Co
u
n
t

1
0
Sample Mean
(λ)
Sample Standard
Deviation
(σ)
Lower Control
Limit
(λ-2s)
Upper Control Limit
(λ+2s)

Where σ is the standard deviation,
λ is the mean of the counts, and n
is the 30 second count rate 𝑠𝑠=�∑(𝑈𝑈𝑖𝑖−𝜆𝜆)𝑚𝑚𝑖𝑖=1 9
Where λ is the mean of the
counts, and n is the 30
second count rate 𝜆𝜆= 110 �𝑈𝑈𝑖𝑖10
𝑖𝑖=1

August 2016

FORM 2: INSTRUMENT CONTROL CHART
Initials Date
Co
u
n
t
Sample
Mean (λ)
Sample
Standard
Deviation (s)
Lower
Control
Limit (λ-2s)
Upper
Control
Limit (λ+2s) Pa
s
s
?

Y or N
Y or N
Y or N
Y or N
Y or N
Y or N
Y or N
Y or N
Y or N
Y or N
Y or N
Y or N
Y or N
Y or N
Y or N
Y or N
Y or N
Y or N
Y or N
Y or N
Y or N
Y or N
Y or N
Y or N
Y or N
Y or N
Y or N
Y or N

ATTACHMENT B
CONSTRUCTION QUALITY ASSURANCE/QUALITY CONTROL PLAN
FOR RECLAMATION OF WHITE MESA MILL FACILITY
BLANDING, UTAH
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TABLE OF CONTENTS
1 INTRODUCTION.............................................................................................................. 1
1.1 Purpose and Scope ........................................................................................................... 1 1.2 Definition of Terms .......................................................................................................... 2 2 INVOLVED PARTIES AND PERSONNEL................................................................... 4 2.1 Owner ............................................................................................................................... 4
2.2 Construction Manager ...................................................................................................... 4
2.3 Design Engineer ............................................................................................................... 4 2.4 Contractor ......................................................................................................................... 5 2.5 Surveyor ........................................................................................................................... 5
2.6 CQA/QC Consultant ........................................................................................................ 6
2.7 CQA Officer ..................................................................................................................... 6
2.8 CQA Site Manager ........................................................................................................... 7 2.9 QC Technicians ................................................................................................................ 8 2.10 Document Control Officer ............................................................................................... 8
2.11 CQA Laboratory ............................................................................................................... 9
2.12 DWMRC Project Manager ............................................................................................... 9
3 PROJECT COMMUNICATION ................................................................................... 10 3.1 Flow of Information ....................................................................................................... 10 3.2 Project Kickoff Meeting ................................................................................................. 11
3.3 Pre-Construction Meetings ............................................................................................. 11
3.4 Progress Meetings .......................................................................................................... 12
3.5 Problem or Work Deficiency Meetings ......................................................................... 12 4 DOCUMENTATION ....................................................................................................... 14 4.1 Overview ........................................................................................................................ 14
4.2 Daily Field Reports ........................................................................................................ 14
4.3 Weekly Summary Reports ............................................................................................. 15
4.4 Field Change Reports ..................................................................................................... 15 4.5 Construction Problems and Resolution Data Sheets ...................................................... 15 4.6 Design or Specification Changes ................................................................................... 15
4.7 CQA Compliance Reports .............................................................................................. 15
4.8 Final Construction Report .............................................................................................. 16
5 CQA/CQC PROCEDURES ............................................................................................ 17 5.1 Contractor Evaluation .................................................................................................... 17 5.2 Testing Methods ............................................................................................................. 17
5.3 Cell 1 Reclamation ......................................................................................................... 19
5.3.1 Removal of Contaminated Materials ...................................................................... 19
5.3.2 Subgrade Preparation .............................................................................................. 19 5.3.3 Clay-Lined Cell 1 Disposal Area ............................................................................ 19 5.3.4 Clay Liner Material Conformance Monitoring and Testing ................................... 19
5.3.5 Clay Liner and Subgrade Material Placement ........................................................ 20
5.3.6 Moisture and Density Control ................................................................................. 21
5.3.7 Sedimentation Basin and Discharge Channel ......................................................... 22
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5.3.8 Riprap Conformance Monitoring and Testing ........................................................ 22
5.3.9 Riprap and Filter Material Placement ..................................................................... 23
5.3.10 Tolerances ............................................................................................................... 23
5.3.11 Nonconformance, Corrective Action and Stop Work ............................................. 24 5.3.12 Documentation ........................................................................................................ 24
5.4 Mill Decommissioning ................................................................................................... 25
5.4.1 Characterization Surveys ........................................................................................ 25
5.4.2 Contaminated Material Disposal............................................................................. 26
5.4.3 Material Conformance Monitoring ......................................................................... 26 5.4.4 Material Placement ................................................................................................. 26
5.4.5 Material Compaction .............................................................................................. 27
5.4.6 Final Slope and Grades ........................................................................................... 28
5.4.7 Tolerances ............................................................................................................... 29
5.4.8 Nonconformance, Corrective Action and Stop Work ............................................. 29 5.4.9 Documentation ........................................................................................................ 29
5.5 Settlement Plates ............................................................................................................ 29
5.6 Cover System ................................................................................................................. 29
5.6.1 Material Conformance Monitoring and Testing ..................................................... 30
5.6.2 Material Placement ................................................................................................. 32 5.6.3 Density Control ....................................................................................................... 33
5.6.4 Surface Slopes and Grades ...................................................................................... 34
5.6.5 Tolerances ............................................................................................................... 35
5.6.6 Nonconformance, Corrective Action and Stop Work ............................................. 35
5.6.7 Documentation ........................................................................................................ 35 5.7 Riprap and Filter Material .............................................................................................. 35
5.7.1 Material Conformance Monitoring and Testing ..................................................... 36
5.7.2 Material Placement ................................................................................................. 38
5.7.3 Compaction ............................................................................................................. 39
5.7.4 Tolerances ............................................................................................................... 39 5.7.5 Nonconformance, Corrective Action and Stop Work ............................................. 40
5.7.6 Documentation ........................................................................................................ 40
5.8 Protection of Soil Stockpiles .......................................................................................... 40
6 FIELD REPORT FORMS .............................................................................................. 41
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1 INTRODUCTION
This Construction Quality Assurance/Quality Control Plan (CQA/QC Plan) has been prepared
for construction activities related to the reclamation of the Energy Fuels Resources (USA) Inc.
(”EFRI”) White Mesa Mill Facility located in Blanding, Utah and is submitted as an attachment
to the Reclamation Plan.
1.1 Purpose and Scope
The purpose of this CQA/QC Plan is to address the Construction Quality Assurance (CQA) and
Construction Quality Control (CQC) procedures and requirements to be used during reclamation
activities at the site to assure that the project is constructed in conformance with the Technical
Specifications, Drawings, and applicable regulatory requirements and permit conditions. The
CQA/QC Plan is intended to: 1) define individuals and organizations who will be involved in
reclamation activities and their respective responsibilities and qualifications; 2) establish
guidelines for the flow of information and project communication; 3) establish protocols for
project documentation; and 4) establish specific CQA/CQC procedures for the major
components of the project.
This CQA/QC Plan addresses reclamation of the following facilities:
• Cell 1 (evaporation)
• Cells 2, 3, and 4A (tailings)
• Cell 4B (This cell is currently used for evaporation of process solutions. The CQA/QC
Plan was written assuming this cell will be used for tailings storage in the future.)
• Mill buildings and equipment
• On-site contaminated areas
• Off-site contaminated areas (i.e., potential areas affected by windblown tailings)
The CQA/QC Plan has been written assuming tailings management Cells 2, 3, 4A, and 4B will
receive tailings to the maximum permitted tailings elevations. Cell 2 is full and partially
reclaimed. Cell 3 was used for tailings storage, but is currently only receiving mill waste. Cell 3
is partially full and partially reclaimed. Cell 4A is the only cell currently receiving tailings and is
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partially full. Cell 4B is used for evaporation of process solutions and has not yet been used for
storage of tailings.
Reclamation of the above facilities will include the following:
• Placement of contaminated soils, crystals, and synthetic liner material and any
contaminated underlying soils from Cell 1 into the last active tailings cell
• Placement of a compacted clay liner on a portion of the Cell 1 impoundment areas to be
used for disposal of contaminated materials and debris from the Mill site
• Decommissioning the Cell 1 (evaporation) area
• Reclamation of the Mill and ancillary areas
• Placement of materials and debris from Mill decommissioning into the Cell 1 Disposal
Area or the last active tailings cell
• Placement of an Evapotranspiration (ET) cover over the entire area of Cells 2, 3, 4A, 4B
and the Cell 1 Disposal Area
• Construction of runoff control and diversion channels as necessary
• Reclamation of borrow sources
1.2 Definition of Terms
In the context of this CQA/QC Plan, the following definitions apply:
Construction Quality Assurance (CQA) – A planned and systematic pattern of means and
actions designed to assure adequate confidence that the materials or services meet contractual
and regulatory requirements and will perform satisfactorily in service. CQA refers to means and
actions employed by the involved parties to assure conformity of the project work with this
CQA/QC Plan, the Drawings, and the Technical Specifications.
Construction Quality Control (CQC) – Actions that provide a means to measure and regulate
the characteristics of an item or service in relation to contractual and regulatory requirements.
CQC refers to those actions taken by the Contractor, technicians, or other involved parties to
verify that the materials and the workmanship meet the requirements of this CQA/QC Plan, the
Drawings, and the Technical Specifications.
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Technical Specifications – The document that prescribes requirements and standards for
specific elements of the reclamation. This document is included as Attachment A to the
Reclamation Plan. Technical Specifications will be prepared in final form prior to
commencement of reclamation activities.
Drawings – Detailed project drawings to be used in conjunction with the Technical
Specifications. These drawings will be prepared in final form as construction drawings prior to
reclamation.
Construction Project – The total authorized/approved reclamation project that requires several
construction segments to complete.
Construction Segment – A portion of the total construction project involving a specific area or
type of work. Several construction segments will likely take place simultaneously during
reclamation.
Construction Task – A basic construction feature of a construction segment involving a specific
construction activity.
ASTM Standards – The latest versions of the American Society for Testing and Materials
specifications, procedures and methods.

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2 INVOLVED PARTIES AND PERSONNEL
Each construction task within each segment of the overall project will consist of both a QC and
QA component. Compliance reporting will be completed for each segment. Upon completion of
all project segments, a final construction report will be prepared for the project. Following is a
listing of the parties (organizations and individuals) that will be involved in the implementation
of the CQA/QC Plan during the reclamation at the site, including a discussion of each party’s
responsibility, authority and qualifications.
2.1 Owner
The Owner of this project is EFRI.
2.2 Construction Manager
Responsibility & Authority: The on-site Construction Manager is responsible for the conduct,
direction and supervision of all reclamation activities as detailed in the Drawings and Technical
Specifications. The Construction Manager will be selected/appointed by the Owner. The
Construction Manager is responsible for maintaining a detailed schedule for the various
Construction Segments so that each is performed according to the schedule for the overall
Reclamation Project. The Construction Manager will interact as required with all other parties
involved in implementing the reclamation including the Contractor, the CQA/QC personnel, and
the DWMRC Project Manager. In the temporary absence of the Construction Manager, a
designated representative will assume the duties of the Construction Manager. The Owner may
appoint separate Construction Managers to oversee the various Construction Segments within the
overall Reclamation Project. The Construction Manager(s) will report directly to the Owner.
Qualifications: The Construction Manager(s) shall have the mine and mill reclamation and
construction experience necessary to manage a large-scale reclamation project.
2.3 Design Engineer
Responsibility & Authority: The Design Engineer is responsible for the design of the various
elements of the reclamation project and for preparing the Drawings and Technical Specifications.
Throughout the project, the Design Engineer will interact as necessary with the Owner,
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Construction Manager, CQA/QC staff, and the DWMRC Project Manager. The Design Engineer
will approve all design changes that arise during the course of the Reclamation Project.
Qualifications: The Design Engineer shall be a qualified Professional Engineer registered in the
State of Utah. The Design Engineer shall have expertise which demonstrates significant
familiarity with the design and construction of the various elements of mine and Mill site
reclamation including earthwork, cover design, mill demolition and disposal.
2.4 Contractor
Responsibility & Authority: The Contractor refers to an independent party or parties,
contracted by the Owner, performing the work in accordance with this CQA/QC Plan, the
Drawings, and the Technical Specifications. It is anticipated that various Contractors will be
employed to perform the various Construction Segments within the overall Reclamation Project.
The Contractor will work under the direction of and report directly to the Construction Manager.
Qualifications: Qualifications of the Contractor are specific to the construction contract and the
specific Construction Segment. The Contractor shall have a demonstrated history of successful
construction experience as appropriate for the Construction Segment. The Contractor shall
maintain current state and federal licenses as appropriate.
2.5 Surveyor
Responsibility & Authority: The Surveyor is a party, independent from the Owner or
Contractor, who is responsible for surveying, documenting, and verifying the location of all
significant components of the work. The Surveyor is responsible for issuing Record Drawings of
the completed elements of the Construction Project. The Surveyor’s work is coordinated with
the Contractor and CQA Consultant. The Surveyor will report directly to the Construction
Manager.
Qualifications: The Surveyor will be a well-established surveying company with at least 3
years of surveying experience in the State of Utah. All survey activities shall be performed
under the direction of a Professional Land Surveyor, licensed as required by State of Utah
regulations. The Surveyor shall be fully equipped and experienced in the use of total stations
and AutoCAD.
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2.6 CQA/QC Consultant
Responsibility & Authority: The CQA/QC Consultant is a party, independent from the Owner
or Contractor, who is responsible for observing, testing, and documenting the various activities
comprising the Reclamation Project in accordance with this CQA/QC Plan, the Technical
Specifications and the Drawings. The CQA/QC Consultant will be responsible for issuing a
CQA report at the completion of the Reclamation Project which will document construction and
associated CQA/QC activities. The CQA/QC Consultant will work in coordination with the
Contractor, Surveyor and other parties and will report directly to the Construction Manager.
Qualifications: The CQA Consultant shall be a well-established firm specializing in
geotechnical and reclamation engineering that possesses the equipment, personnel, and licenses
necessary to conduct the observation and testing required. The CQA/QC Consultant will be
experienced with earthwork, mill decommissioning, and other reclamation activities. The
CQA/QC Consultant will be experienced in preparation of CQA documentation including field
documentation, field testing procedures, laboratory testing procedures, and CQA reports.
The CQA Consultant will provide qualified staff for the project which will include the following
individuals.
1) CQA Officer
2) CQA Site Manager
3) QC Technicians
2.7 CQA Officer
Responsibility & Authority: The CQA Officer will be responsible for overall implementation
and management of the CQA/QC Plan for the reclamation project. The CQA Officer works from
the office of the CQA Consultant and conducts periodic visits to the site as required. The CQA
Officer will supervise the CQA Site Manager and all QC Technicians and will coordinate with
the Surveyor, the Contractor and other staff. The CQA Officer will report directly to the
Construction Manager.
The CQA Officer will be expected to maintain a thorough understanding of the existing White
Mesa facilities and the reclamation project design documents including the Drawings, Technical
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Specifications, and this CQA/QC Plan. He/she will have the authority to reject work or material,
to require removal or placement, to specify and require appropriate corrective actions if it is
determined that the Quality Control/Quality Assurance, personnel, instructions, controls, tests, or
records are not conforming to the CQA/QC Plan, the Construction Plans, or the Technical
Specifications. The approval of the CQA Officer is required on all Compliance Reports required
in this CQA/QC Plan. Specific responsibilities of the CQA Officer will include the following:
1. Administer the CQA program (i.e., provide supervision of and manage all CQA
personnel and activities)
2. Provide and document all necessary training and certifications for CQA personnel
3. Review and approve the Contractor’s QC Plan(s), if applicable
4. Attend Project Kickoff and Pre-Construction Meetings, and make site visits as needed
5. Perform ongoing, timely review of all CQA documentation and provide signature on
all CQA documentation
Qualifications: The CQA Officer will be a Professional Engineer registered in the State of Utah
and will be experienced in providing CQA oversight for large construction projects.
2.8 CQA Site Manager
Responsibility & Authority: The CQA Site Manager will be appointed by the CQA Consultant
to provide day-to-day, on-site oversight of the CQA/CQC activities. The CQA Site Manager
will report directly to the CQA Officer and will interact with the Construction Manager,
Contractor and others on a daily basis, as project activities take place. The CQA Site Manager
will maintain a thorough understanding of the Drawings, Technical Specifications, and this
CQA/QC Plan. Specific responsibilities of the CQA Site Manager will include the following:
1. Attend all CQA-related meetings including Project Kickoff and Pre-Construction
Meetings
2. Provide direct oversight of QC Technicians
3. Assign locations for testing and sampling
4. Oversee the collection and shipping of laboratory test samples
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5. Review results of field and laboratory testing and any test results provided by the
Contractor and make appropriate recommendations
6. Review the calibration and condition of onsite testing equipment, and maintain
necessary equipment documentation
7. Report any deviations from the CQA/QC Plan, Drawings, or Technical Specifications
to the Construction Manager and CQA Officer and arrange consultation with other
parties as necessary to find solutions to unsolved problems
8. Prepare a daily field report for submittal to the CQA Officer and Construction
Manager
Qualifications: The CQA Site Manager will be an engineer experienced in providing field
CQA/CQC oversight for construction projects.
2.9 QC Technicians
Responsibility & Authority: The CQA Consultant will utilize various QC Technicians to assist
the on-site CQA Site Manager to perform specific tasks through the project to verify the
adequacy of construction materials and procedures. The QC Technicians will work under the
direct supervision of the CQA Site Manger and will work in close coordination with the
Contractor. The number of technicians will depend on the project needs as the work progresses.
Qualifications: The CQA Consultant will identify areas of competency and select technicians
as necessary. The QC Technicians will receive on-the-job training or off-site training as required
under the direction of the CQA Consultant. The CQA Officer will determine the areas of
expertise of the respective technician and maintain a file on each technician’s training and
certifications.
2.10 Document Control Officer
Responsibility & Authority: The Document Control Officer will be appointed by the
Construction Manager to assist with managing the various documents that will be produced
throughout the project. The Document Control Officer will maintain permanent files for the
Construction Project. All tests, surveys, monitoring and report originals will be maintained in
the project files. The Document Control Officer will oversee document reproduction and
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distribution. A distribution list will be prepared in coordination with the Owner, Construction
Manager, and CQA Officer.
Qualifications: The Document Control Officer will have the organizational and computer skills
necessary to manage and distribute the various project documents.
2.11 CQA Laboratory
Responsibility & Authority: The CQA Laboratory is a party, independent from the Owner and
Contractor, responsible for conducting tests of soils and other project materials in accordance
with ASTM and other applicable standards in either an on-site or off-site laboratory. It is likely
that more than one CQA Laboratory will be used to perform testing during reclamation activities,
depending upon the material being tested. The CQA Laboratory will work in coordination with
other personnel and will report directly to the CQA Consultant.
Qualifications: The CQA Laboratory will be an AASHTO AMRL accredited laboratory in
testing soils using the ASTM standards outlined in the Technical Specifications. The CQA
Laboratory will be capable of providing test results within a maximum of seven days of receipt
of samples and will maintain that capability throughout the duration of the project.
2.12 DWMRC Project Manager
The DWMRC Project Manager will represent the DWMRC's interests in the Reclamation
Project. The DWMRC Project Manager may choose to review selected procedures, personnel
qualifications, equipment, calculations, and documentation. DWMRC personnel will be granted
full access to the project files upon request.
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3 PROJECT COMMUNICATION
3.1 Flow of Information
Effective communication is necessary to ensure a high degree of quality during the Reclamation
Project. Specific meetings of key project personnel will take place including a Project Kickoff
Meeting, Pre-Construction Meetings, weekly Progress Meetings, and Problem or Work
Deficiency Meetings. In addition, informal communication and cooperation will take place
between the various parties listed in Section 2 above. The organizational chart showing the
proposed lines of communication between the various parties is shown in Figure 1. The planned
project meetings are described in the following sections.

Figure 1 – Project Organization

Regulatory Agency -
Utah Department of Environmental Quality, Utah Division of Waste Management and Radiation Control (DWMRC)
Project Manager -
Utah DWMRC
Owner -
Energy Fuels Recources (USA) Inc.
Design Engineer Construction Manager
Contractor
Surveyor
Document Control
Officer
CQA Consultant
CQA Officer
CQA Site Manager
QC Technicians
CQA Laboratory
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3.2 Project Kickoff Meeting
At the beginning of major reclamation activities, a Project Kickoff Meeting will take place at the
site. At a minimum, this meeting will be attended by the Owner, the Construction Manager, the
Contractors, the CQA Consultant, the Engineer, and the DWMRC Project Manager. The
Construction Manager will conduct a site tour to observe the current site conditions and to
identify various areas of the site including equipment storage areas, soil stockpiling areas, and
staging areas. The Construction Manager will appoint an individual to record the discussions
and decisions of the meeting and distribute meeting minutes to all attendees. Specific items for
discussion will include:
1. The Drawings, Technical Specifications, and CQA/QC Plan and any modifications or
clarifications to these documents
2. Lines of communication and authority
3. The responsibilities of each party
4. The overall schedule for the Reclamation Project and the anticipated sequencing and
schedule of the various Construction Segments
5. Documentation requirements
3.3 Pre-Construction Meetings
The overall Reclamation Project will be comprised of several individual Construction Segments.
At the beginning of each Construction Segment, a Pre-Construction meeting will take place at
the site and will be attended by the Construction Manager, the Contractor, the CQA Consultant,
and the DWMRC Project Manager. The Construction Manager will conduct a tour of the work
area to observe the current site conditions and to identify various areas of the site including
equipment storage areas, soil stockpiling areas, staging areas, and other details related to the
Construction Segment. The Construction Manager will appoint an individual to record the
discussions and decisions of the meeting and distribute meeting minutes to all attendees.
Specific items for discussion at the Pre-Construction Meetings include the following:
1. The Drawings, Technical Specifications, and CQA/QC Plan and any modifications or
clarifications to these documents
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2. Safety procedures
3. Lines of communication and authority
4. The responsibilities of each party
5. The overall schedule for the Construction Segment
6. Acceptance and rejection criteria
7. Protocols for handling deficiencies, repairs, and re-testing
8. Documentation requirements
3.4 Progress Meetings
Progress meetings will be held weekly between the CQA Site Manager, the Contractor, the
Construction Manager, and other concerned parties participating in the construction of the
project. This meeting will include discussions of the progress of the project, planned activities
for the next week, and revisions to the work plan or schedule. The Construction Manager will
appoint an individual to document the meeting and send meeting minutes to all attendees for
review and comment.
3.5 Problem or Work Deficiency Meetings
It is anticipated that most work deficiencies will be minor and can be resolved in the field by the
QC Technicians, the CQA Site Manager, and the Contractor. The deficiency and resolution will
be recorded in daily field reports and weekly summary reports prepared by the CQA Site
Manager.
A special meeting will be held when a problem or deficiency is present, or likely to occur, that
cannot be easily resolved in the field. The meeting will be attended by the Contractor, the
Construction Manager, the CQA Site Manager, and other parties as appropriate. If the problem
requires a design modification, the Engineer should either be present at, consulted prior to, or
notified immediately upon conclusion of this meeting. The Construction Manager will appoint
an individual to record the meeting and send meeting minutes to all attendees for review and
approval. The purpose of the work deficiency meeting is to define and resolve the problem or
work deficiency as follows:
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1. Define and discuss the problem or deficiency
2. Review alternative solutions
3. Select a suitable solution agreeable to all parties
4. Implement an action plan to resolve the problem or deficiency

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4 DOCUMENTATION
4.1 Overview
The CQA Consultant will be responsible to prepare documentation that demonstrates that
CQA/CQC requirements have been addressed and satisfied. Documentation will include
monitoring logs, testing data sheets, photo logs, equipment calibration forms, daily field reports,
weekly summary reports, reports of design or specification changes, and a final CQA Report.
Documentation will be maintained in the White Mesa Project files and will be available to the
Owner, Engineer, CQA Officer, and the DWMRC Project Manager at all times.
The CQA Officer and Site Manager will be responsible for preparing forms required throughout
the Reclamation Project. These forms will be used by QC Technicians and other parties to
document QC activities.
4.2 Daily Field Reports
The CQA Site Manager will prepare daily field reports that will document each day’s activities.
These daily reports will include the following, as applicable:
1. Basic information including date, project name, weather conditions, and the
applicable Construction Segment
2. A summary of construction locations, activities, and observations an QC activities
performed
3. Equipment and personnel on the project and a summary of meetings and attendees
4. Monitoring logs, testing data sheets, photo logs, and equipment calibration forms
5. A description of materials used and result of testing and documentation
6. Laboratory test reports
7. Reports of construction problems and resolution data sheets
8. Identification of deficient work or materials, and results of re-testing of deficient
work
9. The signature of the CQA Site Manager
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4.3 Weekly Summary Reports
At the end of each work week, a weekly summary report will be prepared and submitted to the
Construction Manager and the CQA Officer. Weekly summary reports will include a brief
description of the week’s activities and all of the week’s daily field reports. The CQA Officer
will be responsible to review and sign each weekly summary report.
4.4 Field Change Reports
Changes that do not alter the intent of the Construction Plans or Technical Specifications may be
made during construction to fit field conditions. Field changes require the approval of the
Construction Manager and the CQA Site Manager. Field changes are to be reported on Form
No. F-25 (Included in Section 6.0).
4.5 Construction Problems and Resolution Data Sheets
If significant recurring nonconformance occurs, or if special construction situations arise, the
Construction Manager and CQA Officer will be made aware of the situation. The cause of the
nonconformance will be determined and appropriate changes in procedures or specifications may
be recommended. A Construction Problems and Resolution Data Sheet will be prepared to
describe the situation and the resolution. Supporting documentation, such as photos or testing
data sheets, will be attached to the data sheet. Data sheets will be included in the daily field
reports and weekly summary reports.
4.6 Design or Specification Changes
During construction, design or specification changes may be required. Design changes will
require the written approval of the Engineer and will take the form of technical memorandum
and/or an addendum to the Drawings or Technical Specifications. Design changes are to be
reported on Form No. F-26 (Included in Section 6.0).
4.7 CQA Compliance Reports
At the completion of each Construction Segment, the CQA Consultant will prepare a CQA
Compliance Report signed and sealed by a Professional Engineer licensed in the State of Utah.
The CQA Report will acknowledge that the work has been performed in conformance with the
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Drawings and Technical Specifications. The CQA Report will incorporate supporting
documentation including:
1. All daily field reports and weekly summary reports
2. Laboratory test reports
3. Field change reports
4. Construction problems and resolution data sheets
5. Documentation of design or specification changes
Any subsequent Construction Segment that is dependent upon successful completion of a
specific Construction Segment cannot be initiated until a Compliance Report is prepared and
approved for the previous dependent Construction Segment. Compliance Reports are to be
completed on Form No. F-23 (Included in Section 6.0).
4.8 Final Construction Report
At the conclusion of the Reclamation Project, the Construction Manager or a designated
representative will prepare a Final Construction Report. This report will be submitted to the
DWMRC for review and approval within 180 calendar days after completion of construction.
This report will be prepared under the direct supervision of and stamped by a Professional
Engineer registered in the state of Utah. This report will include, at a minimum:
1. All of the individual CQA Compliance Reports which will summarize all CQA/CQC
operations, construction equipment and processes, results, and observations of
conformance/verification testing
2. A summary of any actions taken to resolve construction problems encountered
3. Field notes and photographs
4. As-built drawings and details

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5 CQA/CQC PROCEDURES
This section describes the CQA/CQC monitoring and testing procedures to be used during the
Reclamation Project to ensure that construction takes place in accordance with the Drawings and
Technical Specifications. Specific requirements for construction procedures and materials are
presented in the Drawings and Technical Specifications, along with criteria for site cleanup
activities. If there is a conflict between CQA/QC procedures presented herein and those
presented in the Technical Specifications, those presented in the Technical Specifications shall
take precedence unless otherwise indicated by the Design Engineer.
5.1 Contractor Evaluation
Prior to construction, each Contractor will submit a summary of proposed construction methods,
equipment and testing protocols. The Construction Manager, CQA Officer, and Engineer will
review the submittal and provide approval, in writing, of the Contractor’s plans. The Contractor
may be required to modify proposed methods, equipment, or testing protocols prior to approval.
5.2 Testing Methods
Throughout the Reclamation Project, various field and laboratory testing will be conducted to
ensure that materials meet the Technical Specifications. Where applicable, testing will be
conducted in accordance with the current versions of the corresponding ASTM test procedures.
Any revisions to the testing methods will be reviewed and approved by the Engineer and the
CQA Officer prior to usage. Testing methods to be used are summarized in Table 1. The
required frequency of testing is described in the applicable Sections that follow.
Table 1 - Summary of Testing Methods
TEST METHOD TEST STANDARD
Particle Size Analysis (Gradation) ASTM D422
Atterberg Limits ASTM D4318
Standard Proctor ASTM D698
Rock Correction of Unit Weight & Water Content ASTM D4718
Nuclear Moisture/Density Gauge ASTM D6938
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TEST METHOD TEST STANDARD
Sand-Cone Test ASTM D1556
Moisture Content ASTM D2216
LA Abrasion – Coarse ASTM C535
LA Abrasion – Fine ASTM C131
Specific Gravity – Aggregate ASTM C127
Absorption – Aggregate ASTM C127
Sodium Soundness – Aggregate ASTM C88

During earthwork operations and fill placement, testing will be conducted to verify that the
materials meet the gradation and classification specifications. Testing will include gradation
testing (ASTM D422) and Atterberg Limit testing (ASTM D4318).
Moisture-density curves will be developed using the standard Proctor test (ASTM D698). Rock
corrections (ASTM D4718) for the Proctor tests may be required depending on the material
being tested. Field density testing may be conducted with the sand cone test (ASTM D1556) or a
nuclear density gauge (ASTM D6938, or as modified by the QA Manager). Correlation of
nuclear density gauge results shall be by comparison with results from sand cone test(s) and
laboratory testing for water content(s) using the oven drying method (ASTM D2216) on similar
material. A sufficient number of sand cone tests and moisture content tests will be performed to
provide a correlation between the sand cone and nuclear density tests.
Rock protection aggregate will be tested using the LA Abrasion test for coarse or fine material
(ASTM C535 or C131), the sodium soundness test (ASTM C88), and the specific gravity and
absorption test (ASTM C127).
Other field or laboratory testing may be required throughout the Reclamation Project. Any
testing shall be performed in accordance with the applicable ASTM or other industry standard.
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5.3 Cell 1 Reclamation
Reclamation of Cell 1 will include the removal of contaminated materials including raffinate
crystals, PVC liner, and contaminated site soils and the construction of a clay-lined area for
permanent disposal of contaminated site materials. This disposal area (the Cell 1 Disposal Area)
will be constructed adjacent to and parallel with the existing Cell 1 dike. A sedimentation basin
will then be constructed and a drainage channel provided.
5.3.1 Removal of Contaminated Materials
QC staff will monitor of the removal of raffinate crystals, liner, and contaminated soils from Cell
1 and placement in the designated area. QC procedures for the placement of these materials are
described in Section 5.4.
5.3.2 Subgrade Preparation
Subgrade for the clay liner may be leveled and filled as needed to provide a stable base for the
placement of the clay liner. The QC staff will monitor placement and compaction of any
subgrade fill.
5.3.3 Clay-Lined Cell 1 Disposal Area
A clay lined area will be constructed adjacent to and parallel with the existing Cell 1 dike for
permanent disposal of contaminated material and debris. Tailings will not be placed in the Cell 1
Disposal Area. The area will be lined with a 12-inch thick clay layer prior to placement of
contaminated materials and installation of the final reclamation cap. Placement of clay liner
materials will be based on a schedule determined by the availability of contaminated materials
removed from the Mill decommissioning area in order to maintain optimum moisture content of
the clay liner prior to placing of contaminated materials.
5.3.4 Clay Liner Material Conformance Monitoring and Testing
The CQA Contractor will perform monitoring and frequent verification testing to verify that the
clay liner material meets the gradation and classification specifications. The CQA Contractor
will monitor earthmoving operations to ensure that fill material is taken from the proper borrow
sources.
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Clay liner material shall have a D100 particle size of less than 1-inch (100 percent passing the 1-
inch sieve), and shall be free from roots, branches, rubbish, and process area debris. Liner
material shall have a minimum of 40 percent passing the No. 200 sieve and a minimum plasticity
index (PI) of 15. Suitable soils will classify as CL, CH, or SC materials under the Unified Soil
Classification System.
Gradation and Atterberg limits testing will be performed at a minimum of one test per 2,000
cubic yards of clay liner material placed or when the material shows significant variation.
Samples should be randomly selected for testing.
Laboratory test results for the clay liner shall be verified for compliance and approved by the
CQA site manager prior to placement of disposed materials in the cell.
5.3.5 Clay Liner and Subgrade Material Placement
QC Technicians will observe the surface condition prior to fill placement. If the compacted
surface of any layer of fill is too dry or smooth to bond properly with the layer of material to be
placed thereon, it will be moistened and/or reworked with a harrow, scarifier, or other suitable
equipment to a sufficient depth to provide relatively uniform moisture content and a satisfactory
bonding surface before the next succeeding layer of fill is placed. If the compacted surface of
any layer of fill is too wet (due to precipitation) for proper compaction, it will be reworked with
harrow, scarifier or other suitable equipment to dry out the layer and reduce the moisture content
to within the required limits. It will then be recompacted to the specified requirements.
QC Technicians will monitor the weather and temperature conditions. No material will be
placed when fill material or the underlying material is frozen or when ambient temperatures do
not permit the placement or compaction of the materials to the specified density without
developing frost lenses in the fill.
The QC Technicians will monitor lift thicknesses frequently to verify the Technical
Specifications are being met. The required layer and lift thicknesses for the clay liner and
subgrade fill are listed in Table 2.
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Table 2 - Summary of Liner Component Layers and Lift Thicknesses
Liner Component Material Type (USCS) Layer Thickness Lift Thickness
Subgrade Fill CL, ML, SC, SP, or SM Variable 8 in. loose (max.)
Clay Liner CL, SC, or CH 12 in. (min.) 6 in. loose (max.)

5.3.6 Moisture and Density Control
The QC Technicians will monitor placement, moisture conditioning, and compaction of the fill
as it is placed. Prior to the start of field compaction operations, appropriate laboratory
compaction curves will be obtained for the range of materials to be placed. Laboratory
compaction curves based on complete Proctor tests will be obtained at the frequencies outlined in
Table 3, depending on the variability of materials being placed.
Each layer of the fill will be conditioned so that the moisture content is uniform throughout the
layer prior to and during compaction. As far as practicable, materials will be brought to the
proper moisture content before placement. If necessary, water will be added after lift placement
to the material by sprinkling on the layer. Each lift will be compacted by a sufficient number of
roller passes or other compaction equipment to achieve the required dry density. Material that is
too dry or too wet or does not meet the required dry density will be rejected and reworked until
the moisture content and dry density are within the specified limits. Reworking may include
removal, re-harrowing, reconditioning, rerolling, or combinations of these procedures.
The required density testing frequencies are included in Table 3. For all materials, a minimum of
two tests will be taken for each day that more than 150 cubic yards of material is placed. A
minimum of one test per lift and at least one test for every full shift of compaction operations
will be taken.
Field density testing may be conducted with the sand cone test (ASTM D1556) or a nuclear
density gauge (ASTM D6938, or as modified by the QA Manager). Correlation of nuclear
density gauge results shall be by comparison with results from sand cone test(s) and laboratory
testing for water content(s) using the oven drying method (ASTM D2216) on similar material. A
sufficient number of sand cone tests and moisture content tests will be performed to provide a
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correlation between the sand cone and nuclear density tests. Field density tests shall be
compared with standard Proctor tests (ASTM D698 Method A or C) on the same material.
Testing frequency may be increased by the CQA Site Manager if variability of materials is noted
at the site, during adverse conditions, or to isolate failing areas of the construction.
Field density testing should not jeopardize the integrity of the clay liner. Holes in the clay
material resulting from testing should be repaired by hand by filling with clay fill, or by filling
with bentonite powder which is hydrated to fully seal the hole.
Table 3 - Summary of Liner Component Moisture-Density Testing
Frequencies and Requirements
Liner Component Test Frequency Density Requirement* Moisture Requirement* Proctor Frequency
Subgrade Fill 1/1,000 cubic yards placed 90% (min.) +/- 3% 1/10,000cubic yards placed
Clay Liner 1/500 cubic yards
placed 95% (min.) +/- 2% 1/5,000 cubic
yards placed
* Based on maximum dry density and optimum water contents as determined by standard Proctor tests (ASTM D698 Method A or C) on the same material.
5.3.7 Sedimentation Basin and Discharge Channel
After contaminated material is removed from Cell 1 and the Cell 1 Disposal Area clay liner has
been constructed, Cell 1 will be breached and constructed as a sedimentation basin. A discharge
channel out of the sedimentation basin will be constructed. Details of these features are provided
in the Drawings and Technical Specifications. The QC staff will monitor the excavation and
construction of these features to ensure conformance with the Technical Specifications.
The channel excavation will be located within competent bedrock. The CQA team must
document and verify the competency of the sedimentary bedrock along the channel for the
Engineer and the Owner’s approval.
5.3.8 Riprap Conformance Monitoring and Testing
A rock apron will be constructed at the transition from soil to bedrock within the sedimentation
basin. Rock apron riprap material of the specified size shall have a minimum rock quality
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designation or durability score of 70 or higher. If actual rock quality designation is between 65
and 69, oversizing will be required. Rock quality designations below 65 will not be acceptable.
The rock size specifications for the riprap shall be confirmed by particle-size distribution testing
prior to placement, using ASTM D422, ASTM D5519, or an approved equivalent method for
large-sized material. Testing shall be at a frequency of at least one test per 10,000 cubic yards of
riprap placed, per select size, or when riprap characteristics show significant variation.
Test series for rock durability will include specific gravity, absorption, sodium soundness and
LA abrasion. During construction additional test series and gradations will be performed for
each type of riprap when approximately one-third (1/3) and two-thirds (2/3) of the total volume
of each type have been produced or delivered. For any type of rock where the volume is greater
than 30,000 cubic yards, a test series and gradations will be performed for each additional 10,000
cubic yards of rock produced or delivered.
5.3.9 Riprap and Filter Material Placement
In subgrade areas requiring fill placement to achieve final grades, after liner removal, the upper
12 inches shall be scarified, moisture conditioned and compacted prior to fill placement.
Filter material and riprap shall be placed in one or more lifts to form a continuous, uniform layer
on top with a minimum thickness as identified in the Drawings. The top surface of the riprap
shall be track-rolled or tamped with the bucket of a track-hoe to provide a uniform riprap surface
and minimize void spaces within the riprap.
5.3.10 Tolerances
Completed grading for the sedimentation basin, in soil, shall be within 1.0 foot (horizontally) of
the lines as designed, and within 0.1 foot (vertically) of the elevations as designed. Final surfaces
shall be smoothed to avoid abrupt changes in surface grade or areas of runoff concentration.
The completed grading for the discharge channel (and portions of the sedimentation basin) in
rock shall be within 2.0 foot (horizontally) of the lines as designed, and within 0.5 foot
(vertically) of the elevations as designed. The final rock surfaces will be rough and shall not be
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filled to make grade. The bedrock channel shall be constructed at or below the design grades in
order to meet the intent of the design.
5.3.11 Nonconformance, Corrective Action and Stop Work
The CQA staff, including the CQA Site Manager and QC Technicians, will have the authority to
reject material brought to the site or material that has been placed. For a failed field
moisture/density test, the QC Technician will determine the extent and depth of the affected area
and require the Contractor to re-work the material as described above. If persistent failed tests
occur (indicating inadequate compaction methods), the CQA Site Manager will have the
authority to stop the work until the underlying cause is determined and the Contractor can
demonstrate that moisture/density specifications can be met.
Laboratory test results for the clay liner shall be verified for compliance and approved by the
CQA site manager prior to placement of disposed materials in the cell.
5.3.12 Documentation
Field and laboratory test results, observations of fill placement, and field compaction test results
will be recorded using the appropriate field forms and reports, as described in Section 4. Table 4
includes a summary of the required materials testing and frequencies.
Table 4 - Summary of Testing Frequency and Criteria for Clay Liner and Sedimentation Basin Riprap
Component Test ASTM Standard Frequency Criteria
Clay Liner
Gradation (200 Wash) D422 1/2,000cubic
yards
40% min. passing the 200 sieve
Atterberg Limits D4318 1/2,000 cubic yards Min. PI = 15
Riprap* Gradation with 200 Wash D422 1/10,000 cubic yards D50, Durability
*Rock durability testing per section 5.3.8

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5.4 Mill Decommissioning
Decommissioning of the Mill will include:
• Disposal of the Mill processing equipment and structures and contaminated soils in
the Mill area
• Cleanup of contaminated areas of the Mill Site including ore storage area and
roadways
• Cleanup of windblown contamination
These areas are shown on the Drawings. The Technical Specifications describe methods and
cleanup criteria, including radiological equipment that will be used and the development of
cleanup criteria. Contaminated materials will be disposed of in the designated areas of the
tailings impoundment.
The CQA Contractor will provide specialized QC Technicians qualified to monitor the
dismantling of the Mill equipment and structures and the cleanup of contaminated soils. These
Technicians will be trained in the proper use and calibration of radiological monitoring
equipment and will monitor the work to ensure the cleanup criteria are met.
5.4.1 Characterization Surveys
Following scanning, classification and cleanup (as required), the areas will be scanned again to
verify compliance with activity criteria. QC Technicians will use calibrated beta/gamma
instruments capable of detecting activity levels of less than or equal to 25 percent of the
guideline values.
After removal of contamination, the technicians will make final surveys over the remediated
areas. The QC Technicians will document within the specific ten meter by ten meter grids, the
sample point locations, as detailed in the Technical Specifications. Soil samples from 10 percent
of the surveyed grids will be chemically analyzed to confirm the initial correlation factors
utilized and confirm the success of cleanup effort for radium, thorium and uranium. Ten percent
of the samples chemically analyzed will be split and duplicates will be sent to an off-site
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laboratory. Spikes and blanks, equal to 10 percent of the samples that are chemically analyzed,
will be processed with the samples.
5.4.2 Contaminated Material Disposal
Contaminated materials including mill debris, site soils, liner material, and raffinate crystals will
be disposed of in the designated portion of the Cell 1 Disposal Area. Material specifications and
placement methods are described in the Construction Plans and Technical Specifications. The
CQA Contractor will provide monitoring and testing during material placement.
5.4.3 Material Conformance Monitoring
For scrap and debris, the QC Technicians will monitor the volume and size of the material to
ensure compliance with the maximum dimensions provided in the Technical Specifications (a
maximum dimension of 20 feet and a maximum volume of 30 cubic ft) and to ensure that
containers are properly pierced. If the size limits are exceeded, the QC staff will require the
Contractor cut the material down to size.
5.4.4 Material Placement
QC Technicians will monitor material placement to verify the debris is spread out and placed
according to the Technical Specifications and that voids are filled with stockpiled soils,
contaminated soils, tailings and/or other approved materials. The approval of the Construction
Manager and CQA Officer will be required for the use of other materials to fill voids.
A minimum of one foot of compacted soil will be required above the clay liner prior to placing
any scrap or debris.
When liner or other lightweight material is placed, the QC staff will ensure that at least one foot
of soil, crystals or other materials is placed above for protection against wind.
To the extent practicable, the various materials will not be concentrated in thick deposits on top
of the tailings, but will be spread over the working surface as much as possible to provide
relatively uniform settlement and consolidation characteristics of the cleanup materials.
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It is anticipated that raffinate crystals will have a consistency similar to a granular material when
brought to the cells, with large crystal masses being broken down for transport. Placement of the
crystals will be performed as a granular fill, with care being taken to avoid nesting of large sized
material. Actual placement procedures will be evaluated by the QC staff during construction as
crystal materials are brought and placed in the cells.
Soil or soil-like material shall be placed and compacted over each lift of debris or other materials
in lifts not to exceed two feet in loose thickness and compacted prior to placement of additional
lifts.
5.4.5 Material Compaction
CQA staff will monitor material compaction to verify compliance with the Technical
Specifications. The first lift (bridging lift) will be compacted by the tracking of heavy
equipment, such as a Caterpillar D6 Dozer (or equivalent), using at least 4 passes, prior to the
placement of a subsequent lift. Contaminated soils and other cleanup materials after the bridging
lift will be compacted to the density requirement provided in the Technical Specifications.
During construction, compaction requirements for the raffinate crystals will be re-evaluated
based on field conditions and modified by the Construction Manager and CQA Officer, with the
agreement of the DWMRC personnel.
Soil or similar material shall be compacted with a minimum of six passes with self-propelled,
towed, or hand-held vibratory compaction equipment. The number of passes shall be confirmed
with actual compaction equipment on site with a field test section of soil to establish a
correlation between the field compaction method and 80 percent of maximum dry density for the
soil, as determined by the standard Proctor test (ASTM D698).
The upper 12 inches of the final disposed material surface shall be compacted to 90 percent of
the maximum dry density for the material, as determined by the standard Proctor test.
Field density tests shall be compared with standard Proctor tests (ASTM D698 Method A or C)
on the same material. Standard Proctor tests shall be conducted at a frequency of at least one test
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per 5,000 cubic yards of material compacted, or when material characteristics show significant
variation.
Field density testing may be conducted with the sand cone test (ASTM D1556) or a nuclear
density gauge (ASTM D6938, or as modified by the QA Manager). Correlation of nuclear
density gauge results shall be by comparison with results from sand cone test(s) and laboratory
testing for water content(s) using the oven drying method (ASTM D2216) on similar material. A
sufficient number of sand cone tests and moisture content tests will be performed to provide a
correlation between the sand cone and nuclear density tests.
The frequency of the field density and moisture tests will be not less than one test per 1,000
cubic yards of compacted fill. A minimum of two tests will be taken for each day that more than
150 cubic yards of material is placed. A minimum of one test per lift and at least one test for
every full shift of compaction operations will be taken. Tables 5 and 6 summarize the placement
and testing criteria for the disposed materials.
Table 5 - Summary of Disposed Materials and Lift Thicknesses
Disposed Materials Material Type (USCS) Layer Thickness Lift Thickness
Debris Lift Variable 48 in. (max.) As needed to fill voids
Fill Above Debris Lift Variable 36 in. (min.) 12 in. compacted (max.)

Table 6 - Summary of Disposed Materials Moisture-Density Testing Frequencies and Requirements
Disposed Materials Test Frequency Density Requirement * Proctor Frequency
Fill around debris 1/1,000 cubic
yards placed 80% (min.) 1/5,000 cubic
yards placed
Upper Debris Fill 1/1,000 cubic yards placed 90% (min.) 1/5,000 cubic yards placed
* Based on maximum dry density and optimum water contents as determined by standard Proctor tests (ASTM D698 Method A or C) on the same material.
5.4.6 Final Slope and Grades
The final disposed material surface shall have maximum side slopes of 5:1 and a top surface
sloping in the directions and grades shown on the Drawings. The side slopes and top surface
shall be free from abrupt changes in grade or areas of runoff concentration. The final disposed
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material surface shall be compacted with approved construction equipment to form a smooth
surface with uniform density for subsequent cover placement.
5.4.7 Tolerances
The final surface of the disposed material shall be smoothed to avoid abrupt changes in surface
grade. The layer thicknesses shall meet the required minimum thicknesses.
5.4.8 Nonconformance, Corrective Action and Stop Work
The CQA Site Manager and QC Technicians will have the authority to reject scrap and debris
that is not properly prepared for placement. The Contractor may be required to reduce the size of
large pieces of material or pierce drums or other containers. CQ staff may also require site soils
to be re-worked if a failed test indicates the compaction requirements were not met. If persistent
inadequacies occur during the placement of contaminated materials, the CQA Site Manager will
have the authority to stop the work until the underlying cause is determined and the Contractor
can demonstrate that the Technical Specifications can be met.
5.4.9 Documentation
All observations and monitoring of contaminated material placement and all field compaction
test results will be recorded using the appropriate field forms and reports, as described in
Section 4.
5.5 Settlement Plates
The CQA team will need to verify proper construction and placement of the settlement points.
The Surveyor will conduct the settlement plate measurements based on the DWMRC approved
monitoring plan.
5.6 Cover System
A multi-layered earthen cover will be placed over tailings Cells 2, 3, 4A, and 4B and the portion
of Cell 1 used for disposal of contaminated materials (the Cell 1 Disposal Area). The cover
layers, from bottom to top, will include: 1) interim fill layer, 2) compacted cover layer 3) growth
medium layer, and 4) erosion protection layer. Layers 1 through 3 will consist of “random fill.”
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The material specifications, layer configurations, layer thicknesses, borrow sources, placement
methods, and compaction requirements are described in the Technical Specifications. The CQA
Contractor will provide monitoring and testing during material placement.
5.6.1 Material Conformance Monitoring and Testing
The CQA Contractor will perform monitoring and frequent verification testing to ensure that the
fill materials meet the gradation and classifications specifications. The CQA Consultant will
monitor earthmoving operations to ensure that the fill material is taken from the proper borrow
sources.
Prior to the placement of the next layer of the cover, the CQA Site Manager or the QC
Technicians under the supervision of the CQA Site Manager shall inspect the completed layer
and document any of the following:
• Erosion of the layer surface
• Cracking or desiccation of the surface
• Fill areas that may contain excessive organics or other debris
• Depressions, or settlement of the layer
• Irregularities in the layer surface (e.g. grading errors)
Any documented items that constitute non-conformance with the Drawings and Technical
Specifications should be corrected prior to placement of the subsequent layer of the cover.
5.6.1.1 Random Fill
Random fill will be used for each of the lower three layers of the cover system. The fill will
consist of mixtures of sands and silts with varying amounts of clay and random amounts of
gravel and rock-size material. Random fill, except for the interim fill layer, shall have a
maximum particle size of 6 inches, and at least 10 percent of the material shall be finer than the
No. 200 sieve. Oversized material will be controlled through selective excavation at the
stockpiles and through the utilization of a grader, bulldozer or backhoe to cull oversize materials
from the fill. The source of these materials will be site stockpiles from previous cell construction
activities.
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Testing for all layers except the interim fill shall consist of No. 200 sieve wash and particle-size
distribution testing (ASTM D422) at a frequency of at least one test per 2,000 cubic yards of fill
placed, or when material characteristics show a significant variation.
5.6.1.2 Topsoil-Gravel Admixture
Topsoil-gravel admixture material shall be free from roots, branches, rubbish, and debris. The
gravel portion of the topsoil-gravel admixture material will consist of granular materials from
approved off-site sources.
The mixture will be 25 percent gravel by weight. The gravel will be purchased from nearby
commercial sources of alluvial gravel and cobbles. The gravel portion of the topsoil-gravel
admixture material shall be a screened product and have a maximum particle size of less than 1-
inch. The topsoil portion of the topsoil-gravel admixture material will consist of select material
from the on-site topsoil borrow area.
Gradation specifications for the gravel used for topsoil-gravel admixture material shall be
confirmed by gradation testing prior to mixing with the topsoil, to determine the maximum
particle size. Testing shall consist of particle-size distribution testing (ASTM D422) at a
frequency of at least one test per 2,000 cubic yards of rock delivered to the site, or when rock
characteristics show a significant variation.
Gradation specifications for topsoil-gravel admixture material shall be confirmed by gradation
testing, on samples collected from the point of placement (on the topdeck). Testing shall consist
of particle-size distribution testing (ASTM D422) at a frequency of at least one test per 2,000
cubic yards of mixture placed, or when the characteristics of the mixture show a significant
variation.
Layer thickness of the topsoil-gravel admixture will be controlled through establishment of grade
stakes placed on a 200 x 200 foot grid on the top of the cells and by a 100 x 100 foot grid on the
cell slopes. Physical checks of topsoil-gravel admixture depth will be accomplished through the
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use of hand dug test pits at the center of each grid in addition to monitoring the depth indicated
on the grade stakes.
5.6.2 Material Placement
QC Technicians will observe the surface condition prior to fill placement. If the compacted
surface of any layer of fill is too dry or smooth to bond properly with the layer of material to be
placed thereon, it will be moistened and/or reworked with a harrow, scarifier, or other suitable
equipment to a sufficient depth to provide relatively uniform moisture content and a satisfactory
bonding surface before the next successive layer of fill is placed. If the compacted surface of
any layer of fill is too wet (due to precipitation) for proper compaction of the fill material to be
placed thereon, it will be reworked with harrow, scarifier or other suitable equipment to reduce
the moisture content to the required level. It will then be recompacted to the specified
requirements.
Nesting of oversized material will be controlled through selective excavation of stockpiled
material, observation of placement by QC Technicians with authority to stop work and reject
material being placed and by culling oversized material from the fill utilizing a grader.
Successive loads of material will be placed on the fill so as to produce the best practical
distribution of material.
QC Technicians will monitor the weather and temperature conditions. No material will be
placed when the fill material or the underlying material is frozen or when ambient temperatures
do not permit the placement or compaction of the materials to the specified density without
developing frost lenses in the fill.
QC Technicians will monitor and document lift thicknesses frequently to ensure the Technical
Specifications are being met. The required layer and lift thicknesses are listed in Table 7.

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Table 7 - Summary of Cover Component Layer and Lift Thicknesses
Cover Component Layer Thickness Lift Thickness
Interim Fill 30 in. (min.) 12 in. loose (max.)
Compacted Cover Layer 36 to 48 in. (min.) 12 in. loose (max.)
Growth Medium Layer 42 in. (min.) 18 in. loose (max.)
Erosion Protection Layer 6 in. (min.) 6 in. (max.)

5.6.3 Density Control
The QC Technicians will monitor placement, moisture conditioning, and compaction of the fill
as it is placed. Prior to the start of field compaction operations, appropriate laboratory
compaction curves will be obtained for the range of materials to be placed. Laboratory
compaction curves based on complete Proctor tests will be conducted at the frequencies outlined
in Table 8, depending on the variability of materials being placed.
Each layer of the fill will be conditioned so that the moisture content is uniform throughout the
layer prior to and during compaction. Each lift will be compacted by a sufficient number of
roller passes or other compaction equipment to achieve the required dry density. Material that
does not meet the required dry density will be rejected and will be reworked until the dry density
is within the specified limits. Reworking may include removal, re-harrowing, reconditioning, re-
rolling, or combinations of these procedures.
The required testing frequencies are included in Table 8. For all layers requiring compaction
testing, a minimum of two tests will be taken for each day that an applicable amount of fill is
placed in excess of 150 cubic yards. A minimum of one test per lift and at least one test for
every full shift of compaction operations will be taken.

Page B-34
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Energy Fuels Resources (USA) Inc.
White Mesa Mill Reclamation Plan
August 2016
Table 8 - Summary of Cover Component Density Testing Frequencies and Requirements
Cover Component Compaction Test Frequency
Relative Compaction Requirement* Proctor Frequency
Compacted Cover
Layer
1/500 cubic yards
placed 95% (min.) 1/5,000 cubic
yards placed
Growth Medium
Layer
1/2,000 cubic
yards placed 85% (min.) 1/10,000 cubic
yards placed
* Based on maximum dry density and optimum water contents as determined by standard Proctor tests (ASTM D698 Method A or C) on the same material.
Field density testing may be conducted with the sand cone test (ASTM D1556) or a nuclear
density gauge (ASTM D6938, or as modified by the QA Manager). Correlation of nuclear
density gauge results shall be by comparison with results from sand cone test(s) and laboratory
testing for water content(s) using the oven drying method (ASTM D2216) on similar material. A
sufficient number of sand cone tests and moisture content tests will be performed to provide a
correlation between the sand cone and nuclear density tests. Field density tests shall be
compared with standard Proctor tests (ASTM D698 Method A or C) on the same material. Rock
corrections (ASTM D4718) for oversize particles may be required for the topsoil-gravel
admixture material (or other materials) depending on the gradation of the gravel material
selected.
The actual frequency of testing may be increased by the CQA Site Manager if variability of
materials is noted at the site, during adverse conditions, or to isolate failing areas of the
construction.
5.6.4 Surface Slopes and Grades
The final cover surface shall have maximum side slopes of 5:1 and a top surface sloping in the
direction and grade shown on the Drawings. The side slopes and top surface shall be free from
abrupt changes in grade or areas of runoff concentration. The perimeter apron at the toe of the
side slopes shall have a minimum width of 20 feet from the toe of the side slopes and slope away
from the toe of the side slopes (as shown on the Drawings).
Page B-35
Revision 5.1
Energy Fuels Resources (USA) Inc.
White Mesa Mill Reclamation Plan
August 2016
5.6.5 Tolerances
The completed cover surface shall be constructed to within 1.0 foot (horizontally) of the lines as
designed, and within 0.1 foot (vertically) of the elevations as designed. The final surface of the
cover shall be smoothed to avoid abrupt changes in surface grade. The layer thicknesses shall
meet the required minimum thicknesses identified in the Technical Specifications and Drawings.
5.6.6 Nonconformance, Corrective Action and Stop Work
The CQA Site Manager and QC Technicians will have the authority to reject material that is
brought to the site or material that has been placed. For a failed field density test, the QC
Technician will determine the extent and depth of the affected area and require the Contractor to
re-work the material as described above. If persistent failed tests occur (indicating inadequate
compaction methods), the CQA Site Manager will have the authority to stop the work until the
underlying cause is determined and the Contractor can demonstrate that the moisture/density
specifications can be met.
5.6.7 Documentation
All field and laboratory test results, observations of fill placement, and field compaction test
results will be recorded using the appropriate field forms and reports, as described in Section 4.
Table 9 includes a summary of the required materials testing and frequencies for the cover
components.
Table 9 - Summary of Testing Frequency and Criteria for Cover Components
Component Test ASTM Standard Frequency Criteria
Random Fill
(compacted cover & growth medium layers)
Gradation with
200 Wash D422 1/2,000 cubic
yards
Max. Particle = 6 inches,
Min. 10% passing the
No. 200 sieve
Rock Mulch Gradation D422 1/2,000 cubic
yards D100 ≤ 1 inch

5.7 Riprap and Filter Material
The side slopes of the reclaimed cover will be protected by riprap surfacing. The size, thickness
and gradation requirements for the riprap are provided in the Drawings and Technical
Specifications.
Page B-36
Revision 5.1
Energy Fuels Resources (USA) Inc.
White Mesa Mill Reclamation Plan
August 2016
5.7.1 Material Conformance Monitoring and Testing
Riprap will be a screened product transported from aggregate sources north of the project site.
The CQA Contractor will perform monitoring and frequent verification testing to confirm that
the riprap meets the gradation and durability specifications.
During active riprap placement, each load of material will be visually checked against standard
piles for gradation prior to transport to the tailings cells.
5.7.1.1 Riprap
Material for the perimeter aprons and side slopes will consist of granular materials from
approved off-site areas. Riprap shall meet NRC long-term durability requirements (rock quality
designation of 65 or more; Johnson, 2002).
Riprap shall be a screened product, free from roots, branches, rubbish, and debris. The
specifications as given below are for rock quality designations of 70 or higher. If actual rock
quality designation is between 65 and 69, additional oversizing will be required. Rock quality
designations below 65 will not be acceptable.
Designated gradations for the riprap will be specified on the final drawings for construction.
Riprap will be imported from off-site.
• Side slope riprap shall have a minimum D50 as listed below and a minimum layer
thickness of 1.5 times the D50 or the D100 of the riprap, whichever is greater:
o 1.7 in. for non-accumulating flow side slopes
o 5.3 in. for Cell 4A and Cell 4B southern side slopes
o 4.5 in. for Cell 1 Disposal Area side slope

Page B-37
Revision 5.1
Energy Fuels Resources (USA) Inc.
White Mesa Mill Reclamation Plan
August 2016
• Riprap used in the rock aprons shall have a minimum D50 as listed below and a minimum
layer thickness of 1.5 times the D50 or the D100 of the riprap, whichever is greater:
o 3.4 in. for Rock Apron A
o 10.5 in. for Rock Apron B
o 9.0 in. for Rock Apron C
Material specifications for the riprap shall be confirmed by gradation testing conducted by the
CQA Laboratory. Testing shall consist of particle-size distribution testing (ASTM D422) at a
frequency of at least one test per 10,000 cubic yards of rock delivered to the site, or when rock
characteristics show a significant variation.
Riprap layer thickness will be controlled through establishment of grade stakes placed on a 200 x
200 foot grid on the top of the cells and by a 100 x 100 foot grid on the cell slopes. Physical
checks of riprap depth will be accomplished through the use of hand dug test pits at the center of
each grid in addition to monitoring the depth indicated on the grade stakes.
Test series for rock durability will include specific gravity, absorption, sodium soundness and
LA abrasion. During construction additional test series and gradations will be performed for
each type of riprap when approximately one-third (1/3) and two-thirds (2/3) of the total volume
of each type have been produced or delivered. For any type of rock where the volume is greater
than 30,000 cubic yards, a test series and gradations will be performed for each additional 10,000
cubic yards of rock produced or delivered. Gradation tests will also be performed at the
direction of the QC Technician for any locations considered inadequate based on visual
inspection by the QC Technician, or if difficulties are experienced by the Contractor during rock
placement.
Page B-38
Revision 5.1
Energy Fuels Resources (USA) Inc.
White Mesa Mill Reclamation Plan
August 2016
5.7.1.2 Filter Material
Filter material shall be free from roots, branches, rubbish, and debris. Filter material will
generally be classified as sand containing gravel and fines and shall meet the following gradation
specifications.
Table 10 – Filter Material Gradation
Sieve Size Percent Passing, by Weight 3-inch 100
No. 4 70-100
No. 20 40-60
No. 200 0-5

Material specifications for the filter material shall be confirmed by gradation testing conducted
by the CQA Laboratory. Testing shall consist of particle-size distribution testing (ASTM D422)
at a frequency of at least one test per 10,000 cubic yards of filter material delivered to the site, or
when material characteristics show a significant variation.
Filter layer thickness will be established during construction with grade stakes placed on a grid
or centerline and offset pattern and layer thickness marks on each grade stake. The minimum
thickness of the layer will be verified by spot checking of layer thickness by hand excavation in
selected locations.
5.7.2 Material Placement
QC Technicians will monitor riprap placement. An initial section of each type of riprap
constructed shall be visually examined and used to evaluate future placement. The initial section
will be constructed with material meeting gradation and riprap thickness requirements. Initial
testing should be conducted to determine the gradation and the rock weight/unit volume that will
be achieved in future rock placement activities. Riprap material will be hauled to the reclaimed
surfaces and placed on the surfaces using belly dump highway trucks and road graders. Riprap
will be dumped in windrows and the grader will spread the riprap in a manner to minimize
segregation of the material. Depth of placement will be controlled through the establishment of
grade stakes. Minimum required thicknesses for riprap and filter material layers are provided in
Page B-39
Revision 5.1
Energy Fuels Resources (USA) Inc.
White Mesa Mill Reclamation Plan
August 2016
the Technical Specifications and Drawings. Physical checks of riprap depth will be
accomplished through the use of hand dug test pits at the center of each grid in addition to
monitoring the depth indicated on the grade stakes. The Contractor will excavate the test pits,
and QC Technicians will observe and document the excavation. Placement of riprap will avoid
accumulation of riprap sizes less than the minimum D50 size and nesting of the larger sized rock.
Additional riprap placement requirements include:
• Individual stones shall not be greater than 90 percent of the riprap layer thickness.
• Dumped riprap shall be placed to its full course thickness in one operation and in such a
manner as to avoid displacing bedding material.
• Hand placement or rearrangement of individual stones will be required only to the extent
necessary to secure the results specified above. Larger stones may require individual
placement by equipment.
• Any stones that are not firmly wedged shall be adjusted and additional selected stones
inserted or existing stones replaced, so as to achieve a solid interlock.
5.7.3 Compaction
QC staff will monitor riprap placement. The riprap layer will be compacted by at least two
passes by a D7 Dozer, tamping with the bucket of a trackhoe, or equivalent methods in order to
key the rock for stability.
5.7.4 Tolerances
The completed riprap shall be placed to within 5.0 foot (horizontally) of the layout as designed,
and within 0.5 foot (vertically) of the elevations as designed. The rock layer thicknesses shall
meet the minimum requirements. Minimum required thicknesses for riprap and filter material
layers are provided in the Technical Specifications and Drawings. Riprap layer thickness will be
directly measured as outlined in Section 5.7.2. A measurement device (i.e. tape measure) may be
used to determine the distance from the top of the bedding or filter layer to the top of the riprap
layer.
Page B-40
Revision 5.1
Energy Fuels Resources (USA) Inc.
White Mesa Mill Reclamation Plan
August 2016
5.7.5 Nonconformance, Corrective Action and Stop Work
The CQA Site Manager and QC Technicians will have the authority to reject riprap that is
brought to the site or riprap that has been placed. For rejected riprap, QC Technicians will
identify the extent of inadequate riprap and will require the Contractor to excavate the material
and place additional riprap. If persistent failed tests occur (indicating inadequate placement
methods), the CQA Site Manager will have the authority to stop the work until the underlying
cause is determined and the Contractor can demonstrate that the riprap can be placed according
to the Technical Specifications.
5.7.6 Documentation
All field and laboratory test results, observations of riprap placement, and field compaction test
results will be recorded using the appropriate field forms and reports, as described in Section 4.
Table 11 includes a summary of the required materials testing and frequencies for the erosion
protection materials.
Table 11 - Summary of Testing Frequency and Criteria for Riprap and Filter Material
Component Test ASTM Standard Frequency Criteria
Riprap* Gradation with 200
Wash D422 1/10,000 cubic
yards
D50 and
Durability*
Filter Material Gradation with 200 Wash D422 1/10,000 cubic yards See Table 10
*Rock durability testing per section 5.7.1.1
5.8 Protection of Soil Stockpiles
The Contractor shall maintain proper erosion control measures for stockpiles and may be
required to cover piles in situations where precipitation is anticipated. The CQA Site Manager
should document improper stockpile management in situations where the integrity of the material
is affected. The Construction Manager and/or the CQA Officer should determine corrective
measures.
Page B-41
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Energy Fuels Resources (USA) Inc.
White Mesa Mill Reclamation Plan
August 2016
6 FIELD REPORT FORMS

CQA/QC PLAN NO. QP-GEN-1-WM

Form No. F-23
COMPLIANCE REPORT
Project No. Date:

Construction Segment:
Drawing No.:
Specification No.:
Description of Completed Construction Segment:

By: CQA Officer
Approvals: CQA Site Manager
DWMRC Project Manager

CQA/QC PLAN NO. QP-GEN-1-WM
Form No. F-25
FIELD CHANGE ORDER
Project No. Date:
Drawing No.:

Specification No.:
Design Feature:

Modifications:

Reason:

Initiated by:

Approved by:
CQA Site Manager

CQA/QC PLAN NO. QP-GEN-1-WM
Form No. F-26

DESIGN CHANGE ORDER
Project No. Date:
Drawing No.:
Specification No.:
Design Feature:

Change in Design:

Reason:

Initiated by:

Approvals:

CQA Site Manager:

DWMRC Project Manager:

Design Engineer:

ATTACHMENT C
COST ESTIMATES FOR RECLAMATION OF WHITE MESA FACILITY IN
BLANDING, UTAH
Cost Summary
WHITE MESA MILL RECLAMATION COST ESTIMATE
June 2016
Revision 5.1
Mobilization $553,834
Office Facilities $106,224
Mill Decommissioning $2,296,874
Cell 1 $1,009,743
Cell 2 $1,092,353
Cell 3 $2,067,154
Cell 4A $1,372,956
Cell 4B $1,499,557
Management/Legal Support $2,422,560
Miscellaneous $2,055,680
Subtotal Direct Costs $14,476,933
Profit Allowance 10.00% $1,332,260
Contingency 25.00% $3,325,170
Licensing & Bonding 2.00% $289,539
UDEQ Contract Administration 4.00% $579,077
Engineering Design Review 2.25% $325,731
Contractors Equipment Floater $82,250
Automobile and General Liability Insurance $177,500
Long Term Care Fund $876,425
Total Reclamation $21,464,885
Revised Bond Amount $21,464,885
8/5/2016 - 10:56 AM - WMM Rec Plan Est August 2016 Rev 5.1 Estimate Revision 5.1.1
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Mill Decommissioning
MILL DECOMMISSIONING
Mill Building Demolition
Resource Description Units Cost/Unit Task Units Task Cost
Mechanics hrs $15.87 640 $10,155
Laborers hrs $17.16 320 $5,490
Small Tools hrs $1.35 960 $1,296
Cat 770 Haul Truck hrs $102.19 640 $65,404
Truck Drivers hrs $21.30 640 $13,632
Cat 988 Loader hrs $144.84 160 $23,175
Cat 988 Loader Operator hrs $26.00 160 $4,160
Cat 365 Excavator hrs $139.69 160 $22,351
Cat 365 Excavator Operator hrs $28.78 160 $4,604
PC 300 w/metal Shears hrs $170.14 160 $27,222
PC 300 Operator hrs $28.78 160 $4,604
60 Ton Crane hrs $91.90 160 $14,704
60 Ton Crane Operator hrs $31.03 160 $4,964
30 Ton Crane hrs $58.29 80 $4,664
30 Ton Crane Operator hrs $31.03 80 $2,482
Equipment Maintenance (Butler) hrs $22.45 1,360 $30,539
Concrete Removal sf $3.30 37,500 $123,750
Total Mill Building Demolition $363,196
Ore Feed Demolition
Resource Description Units Cost/Unit Task Units Task Cost
Mechanics hrs $15.87 64 $1,015
Laborers hrs $17.16 32 $549
Small Tools hrs $1.35 96 $130
Cat 770 Haul Truck hrs $102.19 64 $6,540
Truck Drivers hrs $21.30 64 $1,363
Cat 988 Loader hrs $144.84 16 $2,317
Cat 988 Loader Operator hrs $26.00 16 $416
Cat 365 Excavator hrs $139.69 16 $2,235
Cat 365 Excavator Operator hrs $28.78 16 $460
PC 300 w/metal Shears hrs $170.14 16 $2,722
PC 300 Operator hrs $28.78 16 $460
30 Ton Crane hrs $58.29 0 $0
30 Ton Crane Operator hrs $31.03 0 $0
Equipment Maintenance (Butler) hrs $22.45 112 $2,515
Total Ore Feed Demolition $20,724
SX Building Demolition
Resource Description Units Cost/Unit Task Units Task Cost
Mechanics hrs $15.87 320 $5,077
Laborers hrs $17.16 160 $2,745
Small Tools hrs $1.35 480 $648
Cat 770 Haul Truck hrs $102.19 320 $32,702
Truck Drivers hrs $23.25 320 $7,440
Cat 988 Loader hrs $144.84 80 $11,587
Cat 988 Loader Operator hrs $26.00 80 $2,080
Cat 365 Excavator hrs $139.69 80 $11,175
Cat 365 Excavator Operator hrs $28.78 80 $2,302
PC 300 w/metal Shears hrs $170.14 80 $13,611
PC 300 Operator hrs $28.78 80 $2,302
60 Ton Crane hrs $91.90 0 $0
60 Ton Crane Operator hrs $31.03 0 $0
30 Ton Crane hrs $58.29 0 $0
30 Ton Crane Operator hrs $31.03 0 $0
Equipment Maintenance (Butler) hrs $22.45 560 $12,575
Asbestos Removal sf
Concrete Removal sf $3.30 55,970 $184,701
Total SX Building Demolition $288,947
8/5/2016 - 10:57 AM-WMM Rec Plan Est August 2016 Rev 5.1 Estimate Revision 5.1.1
Energy Fuels Resources (USA) Inc.
White Mesa Mill
MILL DECOMMISSIONING
CCD Circuit Removal
Resource Description Units Cost/Unit Task Units Task Cost
Mechanics hrs $15.87 120 $1,904
Laborers hrs $17.16 60 $1,029
Small Tools hrs $1.35 180 $243
Cat 770 Haul Truck hrs $102.19 120 $12,263
Truck Drivers hrs $23.25 120 $2,790Cat 988 Loader hrs $144.84 30 $4,345
Cat 988 Loader Operator hrs $26.00 30 $780
Cat 365 Excavator hrs $139.69 30 $4,191
Cat 365 Excavator Operator hrs $28.78 30 $863
PC 300 w/metal Shears hrs $170.14 30 $5,104
PC 300 Operator hrs $28.78 30 $863
60 Ton Crane hrs $91.90 30 $2,757
60 Ton Crane Operator hrs $31.03 30 $931
30 Ton Crane hrs $58.29 15 $874
30 Ton Crane Operator hrs $31.03 15 $465
Equipment Maintenance (Butler) hrs $22.45 255 $5,726
Concrete Removal sf $3.30 15,000 $49,500
Total CCD Circuit Removal $94,630
Sample Plant Removal
Resource Description Units Cost/Unit Task Units Task Cost
Mechanics hrs $15.87 32 $508
Laborers hrs $17.16 16 $275
Small Tools hrs $1.35 48 $65
Cat 770 Haul Truck hrs $102.19 32 $3,270
Truck Drivers hrs $21.30 32 $682
Cat 988 Loader hrs $144.84 8 $1,159
Cat 988 Loader Operator hrs $26.00 8 $208
Cat 365 Excavator hrs $139.69 8 $1,118
Cat 365 Excavator Operator hrs $28.78 8 $230
PC 300 w/metal Shears hrs $170.14 8 $1,361
PC 300 Operator hrs $28.78 8 $230
30 Ton Crane hrs $58.29 0 $0
30 Ton Crane Operator hrs $31.03 0 $0
Equipment Maintenance (Butler) hrs $22.45 56 $1,257
Concrete Removal sf $2.15 4,200 $9,030
Total Sample Plant Removal $19,392
Temporary Storage Building Removal
Resource Description Units Cost/Unit Task Units Task Cost
Laborers hrs $17.16 8 $137
Small Tools hrs $1.35 8 $11
Cat 770 Haul Truck hrs $102.19 2 $204
Truck Drivers hrs $21.30 2 $43
Cat 988 Loader hrs $144.84 2 $290
Cat 988 Loader Operator hrs $26.00 2 $52
Equipment Maintenance (Butler) hrs $22.45 4 $90
Concrete Removal sf $2.15 600 $1,290
Total Temporary Storage Building Removal $2,117
8/5/2016 - 10:57 AM-WMM Rec Plan Est August 2016 Rev 5.1 Estimate Revision 5.1.1
Energy Fuels Resources (USA) Inc.
White Mesa Mill
MILL DECOMMISSIONING
Truck Shop Removal
Resource Description Units Cost/Unit Task Units Task Cost
Mechanics hrs $15.87 32 $508
Laborers hrs $17.16 16 $275
Small Tools hrs $1.35 48 $65
Cat 770 Haul Truck hrs $102.19 24 $2,453
Truck Drivers hrs $21.30 24 $511Cat 988 Loader hrs $144.84 8 $1,159
Cat 988 Loader Operator hrs $26.00 8 $208
Cat 365 Excavator hrs $139.69 8 $1,118
Cat 365 Excavator Operator hrs $28.78 8 $230
PC 300 w/metal Shears hrs $170.14 8 $1,361
PC 300 Operator hrs $28.78 8 $230
30 Ton Crane hrs $58.29 0 $0
30 Ton Crane Operator hrs $31.03 0 $0
Equipment Maintenance (Butler) hrs $22.45 48 $1,078
Concrete Removal sf $2.15 4,200 $9,030
Total Truck Shop Removal $18,225
Boiler Demolition
Resource Description Units Cost/Unit Task Units Task Cost
Mechanics hrs $15.87 160 $2,539
Laborers hrs $17.16 80 $1,373
Small Tools hrs $1.35 240 $324
Cat 770 Haul Truck hrs $102.19 160 $16,351
Truck Drivers hrs $21.30 160 $3,408
Cat 988 Loader hrs $144.84 40 $5,794
Cat 988 Loader Operator hrs $26.00 40 $1,040
Cat 365 Excavator hrs $139.69 40 $5,588
Cat 365 Excavator Operator hrs $28.78 40 $1,151
PC 300 w/metal Shears hrs $170.14 40 $6,805
PC 300 Operator hrs $28.78 40 $1,151
60 Ton Crane hrs $91.90 0 $0
60 Ton Crane Operator hrs $31.03 0 $0
30 Ton Crane hrs $58.29 0 $0
30 Ton Crane Operator hrs $31.03 0 $0
Equipment Maintenance (Butler) hrs $22.45 280 $6,287
Concrete Removal sf $3.30 2,900 $9,570
Total Boiler Demolition $61,381
Vanadium Oxidation Circuit Removal
Resource Description Units Cost/Unit Task Units Task Cost
Mechanics hrs $15.87 64 $1,015
Laborers hrs $17.16 32 $549
Small Tools hrs $1.35 96 $130
Cat 770 Haul Truck hrs $102.19 64 $6,540
Truck Drivers hrs $21.30 64 $1,363
Cat 988 Loader hrs $144.84 16 $2,317
Cat 988 Loader Operator hrs $26.00 16 $416
Cat 365 Excavator hrs $139.69 16 $2,235
Cat 365 Excavator Operator hrs $28.78 16 $460
PC 300 w/metal Shears hrs $170.14 16 $2,722
PC 300 Operator hrs $28.78 16 $460
60 Ton Crane hrs $91.90 0 $0
60 Ton Crane Operator hrs $31.03 0 $0
30 Ton Crane hrs $58.29 0 $0
30 Ton Crane Operator hrs $31.03 0 $0
Equipment Maintenance (Butler) hrs $22.45 112 $2,515
Concrete Removal sf $3.30 1,200 $3,960
Total Vanadium Oxidation Circuit Removal $24,684
8/5/2016 - 10:57 AM-WMM Rec Plan Est August 2016 Rev 5.1 Estimate Revision 5.1.1
Energy Fuels Resources (USA) Inc.
White Mesa Mill
MILL DECOMMISSIONING
Main Shop/Warehouse Demolition
Resource Description Units Cost/Unit Task Units Task Cost
Mechanics hrs $15.87 128 $2,031
Laborers hrs $17.16 64 $1,098
Small Tools hrs $1.35 192 $259
Cat 770 Haul Truck hrs $102.19 128 $13,081
Truck Drivers hrs $21.30 128 $2,726Cat 988 Loader hrs $144.84 32 $4,635
Cat 988 Loader Operator hrs $26.00 32 $832
Cat 365 Excavator hrs $139.69 32 $4,470
Cat 365 Excavator Operator hrs $28.78 32 $921
PC 300 w/metal Shears hrs $170.14 32 $5,444
PC 300 Operator hrs $28.78 32 $921
Equipment Maintenance (Butler) hrs $22.45 224 $5,030
Asbestos Removal sf
Concrete Removal sf $2.15 19,300 $41,495
Total Main Shop/Warehouse Demolition $82,944
Decon Pads (2) Demolition
Resource Description Units Cost/Unit Task Units Task Cost
Mechanics hrs $15.87 64 $1,015
Laborers hrs $17.16 32 $549
Small Tools hrs $1.35 96 $130
Cat 770 Haul Truck hrs $102.19 64 $6,540
Truck Drivers hrs $21.30 64 $1,363
Cat 988 Loader hrs $144.84 16 $2,317
Cat 988 Loader Operator hrs $26.00 16 $416
Cat 365 Excavator hrs $139.69 16 $2,235
Cat 365 Excavator Operator hrs $28.78 16 $460
PC 300 w/metal Shears hrs $170.14 16 $2,722
PC 300 Operator hrs $28.78 16 $460
Equipment Maintenance (Butler) hrs $22.45 112 $2,515
Concrete Removal sf $3.30 1,350 $4,455
Total Decon Pads (2) Demolition $25,179
Office Building Demolition
Resource Description Units Cost/Unit Task Units Task Cost
Mechanics hrs $15.87 96 $1,523
Laborers hrs $17.16 48 $824
Small Tools hrs $1.35 144 $194
Cat 770 Haul Truck hrs $102.19 96 $9,811
Truck Drivers hrs $21.30 96 $2,045
Cat 988 Loader hrs $144.84 24 $3,476
Cat 988 Loader Operator hrs $26.00 24 $624
Cat 365 Excavator hrs $139.69 24 $3,353
Cat 365 Excavator Operator hrs $28.78 24 $691
PC 300 w/metal Shears hrs $170.14 24 $4,083
PC 300 Operator hrs $28.78 24 $691
Equipment Maintenance (Butler) hrs $22.45 168 $3,772
Asbestos Removal sf
Concrete Removal sf $1.25 12,100 $15,125
Total Office Building Demolition $46,211
8/5/2016 - 10:57 AM-WMM Rec Plan Est August 2016 Rev 5.1 Estimate Revision 5.1.1
Energy Fuels Resources (USA) Inc.
White Mesa Mill
MILL DECOMMISSIONING
Septic Tanks and Drain Fields
Resource Description Units Cost/Unit Task Units Task Cost
Mechanics hrs $15.87 0 $0
Laborers hrs $17.16 16 $275
Small Tools hrs $1.35 32 $43
Cat 770 Haul Truck hrs $102.19 16 $1,635
Truck Drivers hrs $21.30 16 $341
Cat 988 Loader hrs $144.84 8 $1,159
Cat 988 Loader Operator hrs $26.00 8 $208
Cat 365 Excavator hrs $139.69 8 $1,118
Cat 365 Excavator Operator hrs $28.78 8 $230
PC 300 w/metal Shears hrs $170.14 0 $0
PC 300 Operator hrs $28.78 0 $0
Equipment Maintenance (Butler) hrs $22.45 32 $719
Total Septic Tanks and Drain Fields $5,727
Misc. Tankage & Spare Parts Removal
Resource Description Units Cost/Unit Task Units Task Cost
Mechanics hrs $15.87 48 $762
Laborers hrs $17.16 24 $412
Small Tools hrs $1.35 72 $97
Cat 770 Haul Truck hrs $102.19 48 $4,905
Truck Drivers hrs $21.30 48 $1,022
Cat 988 Loader hrs $144.84 12 $1,738
Cat 988 Loader Operator hrs $26.00 12 $312
Cat 365 Excavator hrs $139.69 12 $1,676
Cat 365 Excavator Operator hrs $28.78 12 $345
PC 300 w/metal Shears hrs $170.14 12 $2,042
PC 300 Operator hrs $28.78 12 $345
Equipment Maintenance (Butler) hrs $22.45 84 $1,886
Total Misc. Tankage & Spare Parts Removal $15,543
Alternate Feed Circuit and Reagent Storage Building
Resource Description Units Cost/Unit Task Units Task Cost
Mechanics hrs $15.87 50 $793
Laborers hrs $17.16 50 $858
Small Tools hrs $1.35 96 $130
Cat 770 Haul Truck hrs $102.19 50 $5,110
Truck Drivers hrs $23.25 50 $1,163
Cat 988 Loader hrs $144.84 34 $4,925
Cat 988 Loader Operator hrs $26.00 34 $884
Cat 365 Excavator hrs $139.69 34 $4,750
Cat 365 Excavator Operator hrs $28.78 34 $978
PC 300 w/metal Shears hrs $170.14 52 $8,847
PC 300 Operator hrs $28.78 52 $1,496
Equipment Maintenance (Butler) hrs $22.45 170 $3,817
Concrete Removal sf $2.15 25,500 $54,825
Total Alternate Feed Circuit and Reagent Storage Building $88,575
8/5/2016 - 10:57 AM-WMM Rec Plan Est August 2016 Rev 5.1 Estimate Revision 5.1.1
Energy Fuels Resources (USA) Inc.
White Mesa Mill
MILL DECOMMISSIONING
Mill Yard Decontamination
Resource Description Units Cost/Unit Task Units Task Cost
Cat 637 Scraper hrs $221.91 257 $57,032
Cat 637 Scraper Operator hrs $28.78 257 $7,396
Cat D8N Dozer With Ripper hrs $103.84 65 $6,749
Cat D8N Dozer Operator hrs $26.00 65 $1,690
Cat D7 Dozer hrs $88.08 65 $5,725Cat D7 Dozer Operator hrs $26.00 65 $1,690
Cat 651 Waterwagon hrs $115.90 65 $7,534
Cat 651 Waterwagon Operator hrs $23.25 65 $1,511
Cat 14H Motorgrader hrs $77.15 65 $5,015
Cat 14H Motorgrader Operator hrs $28.78 65 $1,871
Equipment Maintenance (Butler) hrs $22.45 517 $11,609
Total Mill Yard Decontamination $107,822
Ore Storage Pad Decontamination
Resource Description Units Cost/Unit Task Units Task Cost
Cat 637 Scraper hrs $221.91 189 $41,942
Cat 637 Scraper Operator hrs $28.78 189 $5,439
Cat D8N Dozer With Ripper hrs $103.84 48 $4,984
Cat D8N Dozer Operator hrs $26.00 48 $1,248
Cat D7 Dozer hrs $88.08 48 $4,228
Cat D7 Dozer Operator hrs $26.00 48 $1,248
Cat 651 Waterwagon hrs $115.90 48 $5,563
Cat 651 Waterwagon Operator hrs $23.25 48 $1,116
Cat 14H Motorgrader hrs $77.15 48 $3,703
Cat 14H Motorgrader Operator hrs $28.78 48 $1,381
Equipment Maintenance (Butler) hrs $22.45 381 $8,555
Total Ore Storage Pad Decontamination $79,408
Equipment Storage Area Cleanup
Resource Description Units Cost/Unit Task Units Task Cost
Cat 637 Scraper hrs $221.91 68 $15,090
Cat 637 Scraper Operator hrs $28.78 68 $1,957
Cat D8N Dozer With Ripper hrs $103.84 17 $1,765
Cat D8N Dozer Operator hrs $26.00 17 $442
Cat D7 Dozer hrs $88.08 17 $1,497
Cat D7 Dozer Operator hrs $26.00 17 $442
Cat 651 Waterwagon hrs $115.90 17 $1,970
Cat 651 Waterwagon Operator hrs $23.25 17 $395
Cat 14H Motorgrader hrs $77.15 17 $1,312
Cat 14H Motorgrader Operator hrs $28.78 17 $489
Equipment Maintenance (Butler) hrs $22.45 136 $3,054
Total Equipment Storage Area Cleanup $28,414
8/5/2016 - 10:57 AM-WMM Rec Plan Est August 2016 Rev 5.1 Estimate Revision 5.1.1
Energy Fuels Resources (USA) Inc.
White Mesa Mill
MILL DECOMMISSIONING
Revegetate Mill Yard & Ore Pad
Resource Description Units Cost/Unit Task Units Task Cost
Cat 637 Scraper hrs $221.91 174 $38,613
Cat 637 Scraper Operator hrs $28.78 174 $5,007
Cat D8N Dozer With Ripper hrs $103.84 33 $3,427
Cat D8N Dozer Operator hrs $26.00 33 $858
Cat D7 Dozer hrs $88.08 33 $2,907Cat D7 Dozer Operator hrs $26.00 33 $858
Cat 14H Motorgrader hrs $77.15 33 $2,546
Cat 14H Motorgrader Operator hrs $28.78 33 $950
Seed Mix Acre $25.50 2,178 $55,539
Equipment Maintenance (Butler) hrs $22.45 273 $6,130
Total Revegetate Mill Yard & Ore Pad $116,834
Total Demolition and Decontamination $1,489,953
CLEANUP OF WINDBLOWN CONTAMINATION
Scoping Survey
Resource Description Units Cost/Unit Task Units Task Cost
Soil Samples each $50.00 100 $5,000
Survey Crew hrs $15.27 752 $11,483
Sample Crew hrs $15.27 1,312 $20,035
Total Scoping Survey $36,518
Characterization Survey
Resource Description Units Cost/Unit Task Units Task Cost
Soil Samples each $50.00 472 $23,600
Sample Crew hrs $15.27 1,136 $17,347
Total Characterization Survey $40,947
Final Status Survey
Resource Description Units Cost/Unit Task Units Task Cost
Soil Samples each $50.00 300 $15,000
Sample Crew hrs $15.27 3,552 $54,241
Total Final Status Survey $69,241
8/5/2016 - 10:57 AM-WMM Rec Plan Est August 2016 Rev 5.1 Estimate Revision 5.1.1
Energy Fuels Resources (USA) Inc.
White Mesa Mill
MILL DECOMMISSIONING
Windblown Cleanup
Resource Description Units Cost/Unit Task Units Task Cost
Cat 637 Scraper hrs $221.91 680 $150,902
Cat 637 Scraper Operator hrs $28.78 680 $19,569
Cat D8N Dozer With Ripper hrs $103.84 170 $17,652
Cat D8N Dozer Operator hrs $26.00 170 $4,420
Cat D7 Dozer hrs $88.08 170 $14,973Cat D7 Dozer Operator hrs $26.00 170 $4,420
Cat 14H Motorgrader hrs $77.15 170 $13,116
Cat 14H Motorgrader Operator hrs $28.78 170 $4,892
Soil Samples each $50.00 500 $25,000
Survey Crew hrs $15.27 163 $2,489
Sample Crew hrs $15.27 83 $1,267
Equipment Maintenance (Butler) hrs $22.45 1,190 $26,721
Total Windblown Cleanup $285,421
Quality Control
Resource Description Units Cost/Unit Task Units Task Cost
Quality Control Contractor hrs $62.00 2,080 $128,960
Total Quality Control $128,960
Total Cleanup Windblown Contamination $561,088
Conventional Ore Disposal
Resource Description Units Cost/Unit Task Units Task Cost
Cat 770 Haul Truck (3) hrs $102.19 130 $13,322
Truck Drivers (3) hrs $21.30 130 $2,777
Cat 988 Loader hrs $144.84 43 $6,294
Cat 988 Loader Operator hrs $26.00 43 $1,130
Cat 651 Water wagon hrs $115.90 43 $5,036
Cat 651 Water wagon Operator hrs $23.25 43 $1,010
Cat 14H Motorgrader hrs $77.15 25 $1,929
Cat 14H Motorgrader Operator hrs $28.78 25 $719
Equipment Maintenance (Butler) hrs $22.45 242 $5,440
Total Conventional Ore Disposal $37,658
Total Quantity 25,551 Cubic Yards*
196 Cubic Yards per Truck per hour
130 Truck Hours
34,494 * tons as of 1/25/16
Loose (in-truck) material unit weight assumed as 100 lb/cubic foot
8/5/2016 - 10:57 AM-WMM Rec Plan Est August 2016 Rev 5.1 Estimate Revision 5.1.1
Energy Fuels Resources (USA) Inc.
White Mesa Mill
MILL DECOMMISSIONING
Claricone Contaminated Soil Disposal
Resource Description Units Cost/Unit Task Units Task Cost
Cat 770 Haul Truck (3) hrs $102.19 20 $2,086
Truck Drivers (3) hrs $21.30 20 $435
Cat 988 Loader hrs $144.84 7 $985
Cat 988 Loader Operator hrs $26.00 7 $177
Cat 651 Waterwagon hrs $115.90 7 $788
Cat 651 Waterwagon Operator hrs $23.25 7 $158
Cat 14H Motorgrader hrs $77.15 15 $1,157
Cat 14H Motorgrader Operator hrs $28.78 15 $432
Equipment Maintenance (Butler) hrs $22.45 49 $1,101
Total Claricone Contaminated Soil Disposal $7,319
Total Quantity 4,000 Cubic Yards*
196 Cubic Yards per Truck per hour
20 Truck Hours
13.96 *Use 4 times estimated volume
Loose (in-truck) material unit weight assumed as 100 lb/cubic foot
Nitrate Contaminated Soil Disposal
Resource Description Units Cost/Unit Task Units Task Cost
Cat 770 Haul Truck (3) hrs $97.66 335 $32,723
Truck Drivers (3) hrs $21.30 335 $7,137
Cat 988 Loader hrs $144.84 112 $16,178
Cat 988 Loader Operator hrs $26.00 112 $2,904
Cat D8N Dozer With Ripper hrs $50.00 251 $12,545
Cat D8N Dozer Operator hrs $15.27 251 $3,831
Cat 651 Waterwagon hrs $115.79 112 $12,933
Cat 651 Waterwagon Operator hrs $21.30 112 $2,379
Cat 14H Motorgrader hrs $67.43 112 $7,532
Cat 14H Motorgrader Operator hrs $26.32 112 $2,940
Equipment Maintenance (Butler) hrs $22.45 921 $20,682
Concrete Removal sf $2.15 27,500 $59,125
Total Nitrate Contaminated Soil Disposal $180,908
Total Quantity 95,352 Cubic Yards*
285 Cubic Yards per Truck per hour
335 Truck Hours
*Use 2 times estimated volume
8/5/2016 - 10:57 AM-WMM Rec Plan Est August 2016 Rev 5.1 Estimate Revision 5.1.1
Energy Fuels Resources (USA) Inc.
White Mesa Mill
MILL DECOMMISSIONING
Bulk Alternate Feed Material
Resource Description Units Cost/Unit Task Units Task Cost
Cat 770 Haul Truck (3) hrs $102.19 46 $4,653
Truck Drivers (3) hrs $21.30 46 $970
Cat 988 Loader hrs $144.84 15 $2,198
Cat 988 Loader Operator hrs $26.00 15 $395
Cat 651 Waterwagon hrs $115.90 15 $1,759Cat 651 Waterwagon Operator hrs $23.25 15 $353
Cat 14H Motorgrader hrs $77.15 6 $463
Cat 14H Motorgrader Operator hrs $28.78 6 $173
Equipment Maintenance (Butler) hrs $22.45 82 $1,839
Bulk Alternate Feed Material $12,801
Total Quantity 8,924 Cubic Yards* (current as of 01/25/2016)
196 Cubic Yards per Truck per hour
46 Truck Hours
* Includes FMRI, GAM and Dawn Mining
Alternate Feed Barrels
Resource Description Units Cost/Unit Task Units Task Cost
Equipment Operators hrs $21.30 53 $1,130
Flat Bed Trailer and Tractor* hrs $55.00 53 $2,917
Fork Lift (2) hrs $18.00 106 $1,909
Equipment Maintenance (Butler) hrs $22.45 53 $1,191
Total Alternate Feed Barrels $7,147
* includes operator 5,242 Barrels (current as of 01/25/2016)
31 Totes
40 Barrels per load
20 Totes Per Load
0.4 Hours per load
53 Truck Hours
lbs. per barrel No. Drums
CaF2 727 161
Calcined 320 2,200
Regen 406 57
KF 2,704
Cotter Resin 31
UF4 547 120
5,242
Sub-Total Alternate Feed Disposal $19,949
TOTAL MILL DECOMMISSIONING $2,296,874
8/5/2016 - 10:57 AM-WMM Rec Plan Est August 2016 Rev 5.1 Estimate Revision 5.1.1
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Mill Decommissioning
Reviewed 2/25/16
1) Removal of contaminated material from Mill Yard
Assume:
-- 18 inches (1.5 feet) will have to be removed
-- Area (from CAD takeoff) = 1,643,453 sq. feet
37.7 acres
Therefore: Volume moved = [ 1,643,453 x 1.5 ] / 27 = 91,303 cubic yards
(use 91,300)
91,300 / 355 cubic yards per hour = 257 machine hours
Haul route H
2) Removal of contaminated material from Ore Pad
Assume:
-- 18 inches (1.5 feet) will have to be removed
-- Area (from CAD takeoff) = 976,780 sq. feet
22.4 acres
Therefore: Volume moved = [ 976,780 x 1.5 ] / 27 = 54,266 cubic yards
(use 54,300)
54,300 / 287 cubic yards per hour = 189 machine hours
Haul route H
3) Demolition Equipment
-- Kamatsu PL400 (or Cat equivalent) with LaBounty Sheers (hydraulic)
-- Cat 365 Trackhoe with Grapples
-- Cat 770 Rock Trucks (4 each)
-- Cat 988 Loader (1 each)
4) Demolition Crew
-- Heavy Equipment Operators - PC400, Cat 365, Cat 988
-- Dust Control - 2 Laborers
-- Mechanics - Cut debris to reduce/avoid oversize and voids - 4 each
-- Truck Drivers - 4 each
WMM Rec Plan Est August 2016 Rev 5.1 Estimate Revision 5.1.1
Mill Decommissioning
5) Tool and Expendable Allowance, covering the following items:
-- Safety gear and supplies
-- Hand tools
-- Bottled Gases and Torches
-- Allow $1.30 per man-hour for all but Heavy Equipment Operators and Truck Drivers
6) Demolition Time Estimates
-- Mill Building 20 Days
-- Ore Bin 2 Days
-- CCD, Pre-Leach,
Claricone 5 Days
-- Sample Plant 1 Day
-- Boiler House 5 Days
-- Vanadium EMF/Ox 2 Days
-- Shop/Warehouse 4 Days
-- Office/Lab Building 3 Days
-- Misc. & Bone Yard 4 Days
-- Decon Pads (2) 2 Days
7) Foundation Demolition
-- Assume area of structure times $3.30 per square foot
Area, sq ft $ Cost
Mill Building 37,500 123,750$
SX Building 55,970 184,701$
CCD, Pre-Leach,
Claricone 15,000 49,500$
Shop/Warehouse 19,300 63,690$
Office* 12,100 15,125$
Sample Plant 4,200 13,860$
Vanadium EMF/Ox 1,200 3,960$
Boiler house 2,900 9,570$
Decon Pads 1,350 4,455$
-- Labor at $2.75, Equipment at $0.55
-- * Labor at $0.70, Equipment at $0.55
8) Revegetation
Assume:
-- Mill Yard Area 1,643,453 sq. feet
-- Ore Pad Area 976,780 sq. feet
-- Place 6 inches of Topsoil
[ 1,643,453 976,780 ] sq.feet x 0.5 feet] / [27 cubic feet / cubic Yard] 48,523 cu yds
Use 48,600 Cubic Yards
48,600 / 279 cu yds per hour = 174 Scraper hours
Seeding
= $25.50 / 1 thousand sq.ft.
50 acres =
RS Means Referance 32 92 19 14 0500
2178 thousand sq.ft.
WMM Rec Plan Est August 2016 Rev 5.1 Estimate Revision 5.1.1
Mill Decommissioning
9) Removal of Nitrate and Ammonium Sulfate Contaminated Soil
and Concrete Cover Required by Phase 1 of the Nitrate CAP
Assume:
-- 222 inches (18.5 feet) will have to be removed over the entire excavated area as delineated by the
proposed excavation contours in Attachment 4-1 to the December 2013 White Mesa Uranium Mill Proposal
for Remediation, 2012 Phase 1 of Final Nitrate Corrective Action Plan, May 7, and Stipulation and Consent
Order of December 12, 2012 Docket No. UGW-12-04
-- This depth corresponds to 20 feet minus the 18 inches associated with the Mill Yard and Ore Pad reclamation.
-- The nitrate and ammonium sulfate contamination is located within the Mill Yard and Ore Pad which
will both have the top 18 inches removed during reclamation as addressed in above in item 1 and 2.
-- Production is limited by the trucking fleet and not the loader.
-- The dozer will assist the loader during the soil removal.
-- The dozer will backfill and grade the excavation area after the contaminated soil has been removed.
--Volumes and areas are taken from CAD and shown on Attachment 4-1.
--RS Means reference 02 41 13 17 5300 was used to estimate the costs. $2.15 per square foot.
--Excavation Area (from CAD takeoff) = 83,641 sq. feet
-- Concrete Cover Area (from CAD takeoff) 27,500 sq. feet
-- Volume (from CAD takeoff) = 47,676 Cubic Yards
-- Volume including a 200% Conservatism Factor 95,352 Cubic Yards
95,352 / 285 cubic yards per hour = 335 Trucking Hours
95,352 / 685 cubic yards per hour = 139 Backfilling Hours
Haul route H
10) Asbestos Removal
See the attached Executive Summaries from the Asbestos Inspection Reports.
Admin Building 35,650$  
Maint/Warehouse 8,601$    
SX Building 100$        
WMM Rec Plan Est August 2016 Rev 5.1 Estimate Revision 5.1.1
Cell 1
Cell 1 Reclamation
Dewatering of Cell 1
Resource Description Units Cost/Unit Task Units Task Cost
Dewatering of Cell 1 (2 yrs) hrs $0.48 17,520 $8,423
Total Dewatering of Cell 1 $8,423
Crystal Removal
Resource Description Units Cost/Unit Task Units Task Cost
Cat 770 Truck hrs $102.19 1,119 $114,387
Truck Drivers hrs $21.30 1,119 $23,842
Cat 988 Loader hrs $144.84 373 $54,041
Cat 988 Loader Operator hrs $26.00 373 $9,701
Cat D8N Dozer With Ripper hrs $103.84 373 $38,741
Cat D8N Dozer Operator hrs $26.00 373 $9,701
Cat 365 Excavator hrs $139.69 373 $52,120
Cat 365 Excavator Operator hrs $28.78 373 $10,737
Liner Cutting (Laborer) hrs $18.69 373 $6,974
Cat 651 Waterwagon hrs $115.90 373 $43,244
Cat 651 Waterwagon Operator hrs $23.25 373 $8,675
Cat 14H Motorgrader hrs $77.15 373 $28,786
Cat 14H Motorgrader Operator hrs $28.78 373 $10,737
Equipment Maintenance (Butler) hrs $22.45 2,985 $67,024
Total Crystal Removal $478,710
Contaminated Materials Removal
Resource Description Units Cost/Unit Task Units Task Cost
Cat 637 Scraper hrs $221.91 308 $68,350
Cat 637 Scraper Operator hrs $28.78 308 $8,863
Cat D8N Dozer With Ripper hrs $103.84 77 $7,995
Cat D8N Dozer Operator hrs $26.00 77 $2,002
Cat 651 Waterwagon hrs $115.90 77 $8,924
Cat 651 Waterwagon Operator hrs $23.25 77 $1,790
Cat 14H Motorgrader hrs $77.15 77 $5,941
Cat 14H Motorgrader Operator hrs $28.78 77 $2,216
Equipment Maintenance (Butler) hrs $22.45 539 $12,103
Total Contaminated Materials Removal $118,185
Topsoil Application
Resource Description Units Cost/Unit Task Units Task Cost
Cat 637 Scraper hrs $221.91 61 $13,537
Cat 637 Scraper Operator hrs $28.78 61 $1,755
Cat D8N Dozer With Ripper hrs $103.84 40 $4,153
Cat D8N Dozer Operator hrs $26.00 40 $1,040
Cat 651 Waterwagon hrs $115.90 40 $4,636
Cat 651 Waterwagon Operator hrs $23.25 40 $930
Cat 14H Motorgrader hrs $77.15 40 $3,086
Cat 14H Motorgrader Operator hrs $28.78 40 $1,151
Equipment Maintenance (Butler) hrs $22.45 181 $4,064
Total Topsoil Application $34,353
WMM Rec Plan Est August 2016 Rev 5.1 Estimate Revision 5.1.1 Energy Fuels Resources (USA) Inc.
White Mesa Mill
Cell 1 Reclamation
Construct Channel
Resource Description Units Cost/Unit Task Units Task Cost
Cat 770 Truck hrs $102.19 324 $33,061
Truck Drivers hrs $21.30 324 $6,891
Cat 365 Excavator hrs $139.69 81 $11,298
Cat 365 Excavator Operator hrs $28.78 81 $2,327
Drilling & Blasting Contractor BCY $2.44 67,000 $163,717
Drilling & Blasting Contractor, Fuel Gal. $1.81 1,011 $1,834
Cat 14H Motorgrader hrs $77.15 81 $6,240
Cat 14H Motorgrader Operator hrs $28.78 81 $2,327
Cat D8N Dozer With Ripper hrs $103.84 81 $8,398
Cat D8N Dozer Operator hrs $26.00 81 $2,103
Equipment Maintenance (Butler) hrs $22.45 566 $12,713
Total Construct Channel $250,910
Rock Armor and Rip Rap Filter
Resource Description Units Cost/Unit Task Units Task Cost
Cat D7 Dozer hrs $88.08 30 $2,642
Cat D7 Dozer Operator hrs $26.00 30 $780
Cat 651 Waterwagon hrs $115.90 30 $3,477
Cat 651 Waterwagon Operator hrs $23.25 30 $698
Cat 14H Motorgrader hrs $77.15 30 $2,315
Cat 14H Motorgrader Operator hrs $28.78 30 $863
Rock Cost Delivered CY $6.60 8,607 $56,766
Equipment Maintenance (Butler) hrs $22.45 90 $2,021
Total Place Rock Armor and Rip Rap Filter $69,561
Quality Control
Resource Description Units Cost/Unit Task Units Task Cost
Quality Control Contractor hrs $62.00 800 $49,600
Total Quality Control $49,600
TOTAL RECLAMATION OF CELL 1 $1,009,743
WMM Rec Plan Est August 2016 Rev 5.1 Estimate Revision 5.1.1 Energy Fuels Resources (USA) Inc.
White Mesa Mill
Volume Calculation - Cell 1
Reviewed 2/25/16
1) Area of Cell 1 -2,575,703 sq ft = 59.13 acres
2) Crystal and Liner Cover Removal
- Dewatering estimated at 2 years based on the last time Cell 1 was dry and approximate duration. - Crystal thickness assumed as 1.5 feet.
- Soil Cover over the PVC Liner is based on design and as-built - 1.5 feet.
- Crystal and soil cover will be excavated at the same time and placed in Cell 4A.
- Crystal and soil cover will be windrowed with a dozer, and loaded into 3 trucks with a loader.
- The PVC Liner will cut into manageable pieces and loaded into a truck with a hydraulic excavator. - Road maintenance will be accomplished with a motorgrader and water wagon.
2,575,703 x (1.5 ft + 1.5 ft)
3) Removal of Contaminated Material Under Liner
- Estimated depth of contaminated soil required to be removed - 1 foot.
- Contaminated material will be removed to Cell 4A.
- Contaminated soil will be windrowed with a dozer, and loaded into 3 trucks with a loader.
- Road maintenance will be accomplished with a motorgrader and water wagon.
2,575,703 x (1 ft)
4) Construct Channel
- The channel requires blasting of the bedrock to achieve the design grade.
- Approximate dimensions of the channel are 1,200 feet long by 150 feet wide by 10 feet deep.
- The broken rock material will be loaded into 3 trucks with a hydraulic excavator.
- 23,188 CY of this material will be used in Cell 1 to grade the side slopes from 3H:1V to 5H:1V.
- The remainder of the excavated material will be hauled to Cell 4A South Slope and used as Random Fill - 43,479 CY.
5) Grade Side slopes
- The slopes will be graded and shaped with a dozer.
- Cell 1 has 6,020 feet of slopes. The slopes are 8 feet high and currently at a 3H:1V slope.
Volume to be removed =
27 ft3/cy 286,189 CY
Volume to be removed = 95,396 CY27 ft3/cy
- The channel will be constructed in the southwest corner of Cell 1 and will daylight to an existing natural
channel.
- Material needed to grade the side slopes of Cell 1 will be produced during the construction of the Cell 1
Drainage Channel
- The costs for staging the grading material at the base of the slopes is accounted for thin the Channel
Construction Task.
Volume needed for Grading = 6,020 ft x 8 ft x 26 ft x (1/2)23,188 CY27 ft3/cy
Volume to be removed = 66,667 CY27 ft3/cy
1,200 ft x 150 ft x 10 ft
WMM Rec Plan Est August 2016 Rev 5.1 Estimate Revision 5.1.1
6) Topsoil Application
- 29 acres of Cell 1 requires placement of 6 inches of topsoil.
- The remainder of Cell 1 will be covered with exposed Dakota Sandstone or Rip Rap. - The topsoil will hauled from Topsoil pile W4.
- A scraper fleet will haul the topsoil and a dozer will assist with loading and final spreading.
- Road maintenance will be accomplished with a motorgrader and water wagon.
7) Rock Armor and Rip Rap Filter Placement
- A dozer will spread the delivered rock.
- Road maintenance will be accomplished with a motorgrader and water wagon.
- 8,607 CY of rock will be placed.
- Rock for side armor, top armor and toe aprons will come from an off-site gravel source one (1) mile north
of Blanding. Rock will be produced through screening, stockpiled and trucked to the site at the time of use.
Belly dump trucks will dump gravel in windrows on the top and sides of the Cell.
Volume needed for be placed = 29 acres x 43,560 ft2 /acre x 0.5 ft 23,393 CY27 ft3/cy
WMM Rec Plan Est August 2016 Rev 5.1 Estimate Revision 5.1.1
Cell 2
RECLAMATION OF CELL 2
Dewatering of Cell 2
Resource Description Units Cost/Unit Task Units Task Cost
Dewatering of Cell 2 (12 yrs) hrs $0.48 105,120 $50,539
Total Dewatering of Cell 2 $50,539
8/5/2016 - 10:59 AM - WMM Rec Plan Est August 2016 Rev 5.1 Estimate Revision 5.1.1 Energy Fuels Resources (USA) Inc.
White Mesa Mill
RECLAMATION OF CELL 2
Upper Random Fill (2')
Resource Description Units Cost/Unit Task Units Task Cost
Cat 365 Excavator hrs $139.69 264 $36,864
Cat 365 Excavator Operator hrs $28.78 264 $7,594
Cat 980 Loader hrs $100.39 264 $26,493
Cat 980 Loader Operator hrs $26.00 264 $6,861
Cat 770 Truck (4 trucks in Fleet) hrs $102.19 1,056 $107,872
Truck Drivers hrs $21.30 1,056 $22,484
Cat 825 Compactor hrs $101.99 264 $26,915
Cat 825 Compactor Operator hrs $23.25 264 $6,136
Cat D7 Dozer hrs $88.08 264 $23,243
Cat D7 Dozer Operator hrs $26.00 264 $6,861
Cat 651 Waterwagon hrs $115.90 264 $30,585
Cat 651 Waterwagon Operator hrs $23.25 264 $6,136
Cat 14H Motorgrader hrs $77.15 264 $20,360
Cat 14H Motorgrader Operator hrs $28.78 264 $7,594
5000 Gallon Water Truck hrs $67.74 264 $17,877
5000 Gallon Water Truck Operator hrs $23.25 264 $6,136
Equipment Maintenance (Butler) hrs $22.45 1,583 $35,554
* assumes 4 trucks and the trucks are limiting production.
Total Place Upper Random Fill $395,563
Rock Armor and Rip Rap Filter
Resource Description Units Cost/Unit Task Units Task Cost
Cat D7 Dozer hrs $88.08 300 $26,423
Cat D7 Dozer Operator hrs $26.00 300 $7,800
Cat 651 Waterwagon hrs $115.90 300 $34,771
Cat 651 Waterwagon Operator hrs $23.25 300 $6,975
Cat 14H Motorgrader hrs $77.15 300 $23,146
Cat 14H Motorgrader Operator hrs $28.78 300 $8,633
Rock Cost Delivered CY $6.60 72,945 $481,093
Equipment Maintenance (Butler) hrs $22.45 900 $20,209
Total Place Rock Armor and Rip Rap Filter $609,051
Quality Control
Resource Description Units Cost/Unit Task Units Task Cost
Quality Control Contractor hrs $62.00 600 $37,200
Total Quality Control $37,200
TOTAL RECLAMATION OF CELL 2 $1,092,353
8/5/2016 - 10:59 AM - WMM Rec Plan Est August 2016 Rev 5.1 Estimate Revision 5.1.1 Energy Fuels Resources (USA) Inc.
White Mesa Mill
Volume Calculation - Cell 2
Reviewed 02/25/16
1) Area of Cell 2 -2,986,660 sq ft = 68.56 acres
2) The bridging layer of the cover has already been placed over the entire Cell 2 surface.
3) Assumptions
- Cell will be graded to Design elevation utilizing finer materials in random fill stockpiles
and from "clay" stockpiles.
-Dewatering Estimated at 12 years based on the Cell 2 2013 drawdown(1 foot/ year) and remaing solution depth (12 feet).
"- Radon Barrier has been placed over the entire Cell"
- The upper 1 foot of random fill will be placed utilizing the fine random fill and clay stockpiles
- Rock for side armor, top armor and toe aprons will come from an off-site gravel source
one (1) mile north of Blanding. Rock will be produced through screening, stockpiled and
trucked to the site at the time of use. Belly dump trucks will dump gravel in windrows
on the top and sides of the Cell.
5) Bring Platform Fill up to Design elevation (Lower Random)COMPLETE
Assume full area of Cell X one (1) foot thick
2,986,660 sq ft X 1 ft. / 27 cubic feet per cubic yard = cubic yards
Use cubic yards
6) Placement of Clay Layer ( One (1) foot thick on top of Cell only )DELETED
Assume full area of Cell X one (1) foot thick
2,986,660 sq ft X 1 ft. / 27 cubic feet per cubic yard = cubic yards
Use cubic yards
WMM Rec Plan Est August 2016 Rev 5.1 Estimate Revision 5.1.1
Volume Calculation - Cell 2 (con't) page 2
7) Upper Random Fill Volume - Top of Cell area
Assume full area of Cell X two (2) foot thick
- An excavator and loader will load 4 trucks.
- The dozer will place the material, water truck will moisture condition and the compactor will compact the material.
- The water wagon and grader will maintain the haul road.
2,986,660 sq ft X 2 ft. / 27 cubic feet per cubic yard =221,234 cubic yards
Use 221,300 cubic yards
8) Armor Protection - Top of Cell
Assume full area of Cell X one-half (0.5) foot thick
2,986,660 sq ft X 0.5 ft. / 27 cubic feet per cubic yard =55,309 cubic yards
Use 55,400 cubic yards
9) Cell 2 North Slope ( Slope #1 ) common with Cell 1-I
Average height 12 feet
Length 2600 feet
a) Random fill to reduce slope from 3:1 to 5:1
First Wedge [12 X 12 X 5)/2 - (12 X 12 X 3)/2] X 2600
=374,400 cubic feet/ 27 =13,867 cubic yards
Use 13,900 cubic yards
Remaining Random Fill
[15 X 15 X 5)/2 - (12 X 12 X 5)/2] X 2600
=526,500 cubic feet/ 27 =19,500 cubic yards
Use 19,500 cubic yards
Total Random Fill North Slope 33,400 cubic yards
b) Rock Armor 8" thick - 0.67 feet
[15.67 X 15.67 X 5)/2 - (15 X 15 X 5)/2] X 2600
=133,568 cubic feet/ 27 =4,947 cubic yards
Use 5,000 cubic yards
c) Rip Rap Filter 6" thick - 0.5 feet
[15.5 X 15.5 X 5)/2 - (15 X 15 X 5)/2] X 2600
=99,125 cubic feet/ 27 =3,671 cubic yards
Use 3,700 cubic yards
WMM Rec Plan Est August 2016 Rev 5.1 Estimate Revision 5.1.1
Volume Calculation - Cell 2 (con't) page 3
d) Toe Apron 2 X 7 X 2600 / 27 =1,348 cubic yards
Use 1,400 cubic yards
Total Rock Armor Cell 2 north Slope 6,400 cubic yards
10) North Slope common with Mill yard ( Slope #2 )
Average height 1 feet
Length 900 feet
a) Random fill to reduce slope from 3:1 to 5:1
First Wedge [1 X 1 X 5)/2 - (1 X 1 X 3)/2] X 900
=900 cubic feet/ 27 =33 cubic yards
Use 100 cubic yards
Remaining Random Fill
[4 X 4 X 5)/2 - (1 X 1 X 5)/2] X 900
=33,750 cubic feet/ 27 =1,250 cubic yards
Use 1,300 cubic yards
Total Random Fill North Slope 1,400 cubic yards
b) Rock Armor 8" thick - 0.67 feet
[4.67 X 4.67 X 5)/2 - (4 X 4 X 5)/2] X 900
=13,070 cubic feet/ 27 =484 cubic yards
Use 500 cubic yards
c) Rip Rap Filter 6" thick - 0.5 feet
[4.5 X 4.5 X 5)/2 - (4 X 4 X 5)/2] X 900
=9,563 cubic feet/ 27 =354 cubic yards
Use 350 cubic yards
d) No Toe Apron on fill common with Mill Yard
Total Rock Armor on slope common to Mill Yard 500 cubic yards
WMM Rec Plan Est August 2016 Rev 5.1 Estimate Revision 5.1.1
Volume Calculation - Cell 2 (con't) page 4
11) Cell 2 West Dike ( Slope #3 )
Average height 2 feet
Length 500 feet
a) Random fill to reduce slope from 3:1 to 5:1
First Wedge [2 X 2 X 5)/2 - (2 X 2 X 3)/2] X 500
=2,000 cubic feet/ 27 =74 cubic yards
Use 100 cubic yards
Remaining Random Fill
[2 X 2 X 5)/2 - (2 X 2 X 3)/2] X 500
=2,000 cubic feet/ 27 =74 cubic yards
Use 100 cubic yards
Total Random Fill North Slope 200 cubic yards
b) Rock Armor 8" thick - 0.67 feet
[5.67 X 5.67 X 5)/2 - (5 X 5 X 5)/2] X 500
=8,936 cubic feet/ 27 =331 cubic yards
Use 400 cubic yards
c) Rip Rap Filter 6" thick - 0.5 feet
[5.5 X 5.5 X 5)/2 - (5 X 5 X 5)/2] X 500
=6,563 cubic feet/ 27 =243 cubic yards
Use 250 cubic yards
d) Toe Apron Not required for slope 10 feet long - Drainage from Cell goes south to Cell 3
and then off of south slope of Cell 3
Total Rock Armor Cell 2 north Slope 400 cubic yards
12) Cell 2 East Dike ( Slope #4 )
Average height 1 feet
Length 1250 feet
a) Random Fill Wedge from #10 1 cubic foot per linear foot X 1250 46 cubic yards
Use 100 cubic yards
WMM Rec Plan Est August 2016 Rev 5.1 Estimate Revision 5.1.1
Volume Calculation - Cell 2 (con't) page 5
b) Remaining Random Fill from #10
37.5 cubic foot per linear foot X 1250 / 27 1,736 cubic yards
Use 1,800 cubic yards
Total Random Slope #4 1,900 cubic yards
c) Rock Armor 8" thick - 0.67 feet from #10 14.52 cubic feet per linear foot of dike
14.52 cubic foot per linear foot X 1250 / 27
=18,150 cubic feet/ 27 =672 cubic yards
Use 675 cubic yards
d) Rip Rap Filter 6" thick - 0.5 feet
9.075 cubic foot per linear foot X 1250 / 27
=420 cubic feet/ 27 =420 cubic yards
Use 420 cubic yards
e) Toe Apron Not required
Total Rock Armor Cell 2 north Slope 675 cubic yards
13) South Slope Cell 2 common with Cell 3 ( Slope #5 )
Average height 3 feet
Length 3500 feet
a) Random fill to reduce slope from 3:1 to 5:1
Random Fill [3 X 3 X 5)/2 - (3 X 3 X 3)/2] X 3500
=31,500 cubic feet/ 27 =1,167 cubic yards
Use 1,200 cubic yards
Random Fill Upper
[6 X 6 X 5)/2 - (4 X 4 X 5)/2] X 3500
=175,000 cubic feet/ 27 =6,481 cubic yards
Use 6,500 cubic yards
WMM Rec Plan Est August 2016 Rev 5.1 Estimate Revision 5.1.1
Volume Calculation - Cell 2 (con't) page 6
b) Clay Layer
[4 X 4 X 5)/2 - (3 X 3 X 5)/2] X 3500
=61,250 cubic feet/ 27 =2,269 cubic yards
Use 2,300 cubic yards
c) Rock Armor 8" thick - 0.67 feet
[6.67 X 6.67 X 5)/2 - (6 X 6 X 5)/2] X 3500
=74,278 cubic feet/ 27 =2,751 cubic yards
Use 2,800 cubic yards
c) Rip Rap Filter 6" thick - 0.5 feet
[6.5 X 6.5 X 5)/2 - (6 X 6 X 5)/2] X 3500
=54,688 cubic feet/ 27 =2,025 cubic yards
Use 2,050 cubic yards
No Toe Apron
Total Rock Armor on slope Cell 2 Slope common to Cell 3 2,800 cubic yards
WMM Rec Plan Est August 2016 Rev 5.1 Estimate Revision 5.1.1
Volume Calculation - Cell 2 (con't) page 7
Volume Summary - Cell 2
Bridging Layer Random Clay Random Rock Armor Filter
Top of Cell - - - 221,300 55,400 0
North ( Slope #1 ) 13,900 19,500 6,400 3,700
North ( Slope #2 ) 100 1,300 500 350
West ( Slope #3 ) 100 100 400 250
East ( Slope #4 ) 100 1,800 675 420
South ( Slope #5 ) 1,200 2,300 6,500 2,800 2,050
Totals - 15,400 2,300 250,500 66,175 6,770
WMM Rec Plan Est August 2016 Rev 5.1 Estimate Revision 5.1.1
Volume Calculation - Cell 2 (con't) page 8
Cell 2 Reclamation
Cat 637 Resource Requirements
Volume Route Yds/hr % Equip. Hr.
Cell 2 Lower Random Fill
Tailings Surface - E 263 100%0.0
Slope 1 13,900 E 263 100%52.8
Slope 2 100 E 263 100%0.4
Slope 3 100 E 263 100%0.4
Slope 4 100 E 263 100%0.4
Slope 5 1,200 E 263 100%4.6
Total 15,400 58.5
Trucking Fleet Requirements
Cell 2 Upper Random Fill
Tailings Surface 221,300 E 237 100%932.5
Slope 1 19,500 E 237 100%82.2
Slope 2 1,300 E 237 100%5.5
Slope 3 100 E 237 100%0.4
Slope 4 1,800 E 237 100%7.6
Slope 5 6,500 E 237 100%27.4
Total 250,500 1055.6
Cell 2 Rock Armor and Rip Rap Filter -- use Highway Trucks
Yds/hr per
TruckVolume Route % Equip. Hr.
WMM Rec Plan Est August 2016 Rev 5.1 Estimate Revision 5.1.1
Volume Calculation - Cell 2 (con't) page 9
Clay Production Cell 2 DELETED
( use same assumptions as Cell 3 )
Clay Volume = 2,300 Bank Cubic Yards (BCY)
0.8 Swell Factor
=2,875 Loose Cubic Yards (LCY)
Trucking 475 LCY/hr 8 trucks plus one (1) Loader
150,000 LCY / 475 LCY/hr = 6 hours
use 300 hours
300 X 8 Trucks = 2400 hours
Hours
980 Loader 300
D8N w/ ripper 300
Cat 651 WW 300
Cat 825 Comp. 325
14G Patrol 325
5000 gal WW 175
WMM Rec Plan Est August 2016 Rev 5.1 Estimate Revision 5.1.1
Volume Calculation - Cell 2 (con't) page 10
Rock Armor and Rip Rap Filter Production Cell 2
72,945 cubic yards (cy)
38 cy per hour times 8 trucks
304 cy per hour delivered
Assume 25% extra time for spreading, loading and screen wait
304 / 1.25 243.2 cy per hour 300 Hours
WMM Rec Plan Est August 2016 Rev 5.1 Estimate Revision 5.1.1
Cell 3
RECLAMATION OF CELL 3
Dewatering of Cell 3
Resource Description Units Cost/Unit Task Units Task Cost
Dewatering of Cell 3 (12 yrs) hrs $0.48 105,120 $50,539
Total Dewatering of Cell 3 $50,539
Place Remainder of Bridging (Platform) Lift
Resource Description Units Cost/Unit Task Units Task Cost
Cat 637 Scraper hrs $221.91 415 $92,094
Cat 637 Scraper Operators hrs $28.78 415 $11,943
Cat 825 Compactor hrs $101.99 104 $10,582
Cat 825 Compactor Operator hrs $23.25 104 $2,412
Cat D8N Dozer With Ripper hrs $103.84 104 $10,773
Cat D8N Dozer Operator hrs $26.00 104 $2,697
Cat D7 Dozer hrs $88.08 104 $9,138
Cat D7 Dozer Operator hrs $26.00 104 $2,697
5000 Gallon Water Truck hrs $67.74 104 $7,028
5000 Gallon Water Truck Operator hrs $23.25 104 $2,412
Cat 14H Motorgrader hrs $77.15 104 $8,005
Cat 14H Motorgrader Operator hrs $28.78 104 $2,986
Equipment Maintenance (Butler) hrs $22.45 934 $20,967
Total Place Remainder of Bridging (Platform) Lift $183,735
Place Lower Random Fill (12")
Resource Description Units Cost/Unit Task Units Task Cost
Cat 637 Scraper hrs $221.91 485 $107,628
Cat 637 Scraper Operators hrs $28.78 485 $13,957
Cat 825 Compactor hrs $101.99 194 $19,787
Cat 825 Compactor Operator hrs $23.25 194 $4,511
Cat D8N Dozer With Ripper hrs $88.08 194 $17,087
Cat D8N Dozer Operator hrs $26.00 194 $5,044
Cat D7 Dozer hrs $77.15 194 $14,968
Cat D7 Dozer Operator hrs $26.00 194 $5,044
5000 Gallon Water Truck hrs $67.74 194 $13,142
5000 Gallon Water Truck Operator hrs $23.25 194 $4,511
Cat 14H Motorgrader hrs $77.15 194 $14,968
Cat 14H Motorgrader Operator hrs $28.78 194 $5,583
Equipment Maintenance (Butler) hrs $22.45 1,455 $32,672
Total Place Lower Random Fill (12") $258,900
8/5/2016 - 10:59 AM - WMM Rec Plan Est August 2016 Rev 5.1 Estimate Revision 5.1.1 Energy Fuels Resources (USA) Inc.
White Mesa Mill
RECLAMATION OF CELL 3
Clay Layer
Resource Description Units Cost/Unit Task Units Task Cost
Cat 825 Compactor hrs $101.99 350 $35,697
Cat 825 Compactor Operator hrs $23.25 350 $8,138
Cat D8N Dozer With Ripper hrs $103.84 320 $33,227
Cat D8N Dozer Operator hrs $26.00 320 $8,320
Cat 651 Waterwagon hrs $115.90 320 $37,089
Cat 651 Waterwagon Operator hrs $23.25 320 $7,440
Cat 14H Motorgrader hrs $77.15 350 $27,004
Cat 14H Motorgrader Operator hrs $28.78 350 $10,072
Cat 980 Loader hrs $100.39 320 $32,125
Cat 980 Loader Operator hrs $26.00 320 $8,320
5000 Gallon Water Truck hrs $67.74 175 $11,855
5000 Gallon Water Truck Operator hrs $23.25 175 $4,069
Highway Trucks hrs $79.20 2,560 $202,750
Truck Drivers hrs $21.30 2,560 $54,530
Equipment Maintenance (Butler) hrs $22.45 1,835 $41,205
Total Place Clay Layer $521,840
8/5/2016 - 10:59 AM - WMM Rec Plan Est August 2016 Rev 5.1 Estimate Revision 5.1.1 Energy Fuels Resources (USA) Inc.
White Mesa Mill
RECLAMATION OF CELL 3
Upper Random Fill
Resource Description Units Cost/Unit Task Units Task Cost
Cat 365 Excavator hrs $139.69 235 $32,852
Cat 365 Excavator Operator hrs $28.78 235 $6,768
Cat 770 Truck (4 trucks in Fleet) hrs $102.19 941 $96,134
Truck Drivers hrs $21.30 941 $20,038
Cat 825 Compactor hrs $101.99 235 $23,986
Cat 825 Compactor Operator hrs $23.25 235 $5,468
Cat 988 Loader hrs $144.84 235 $34,063
Cat 988 Loader Operator hrs $26.00 235 $6,115
Cat D7 Dozer hrs $88.08 235 $20,714
Cat D7 Dozer Operator hrs $26.00 235 $6,115
Cat 651 Waterwagon hrs $115.90 235 $27,257
Cat 651 Waterwagon Operator hrs $23.25 235 $5,468
Cat 14H Motorgrader hrs $77.15 235 $18,144
Cat 14H Motorgrader Operator hrs $28.78 235 $6,768
5000 Gallon Water Truck hrs $67.74 235 $15,931
5000 Gallon Water Truck Operator hrs $23.25 235 $5,468
Equipment Maintenance (Butler) hrs $22.45 2,587 $58,089
Total Upper Random Fill $389,377
Rock Armor and Rip Rap Filter
Resource Description Units Cost/Unit Task Units Task Cost
Cat D7 Dozer hrs $88.08 290 $25,543
Cat D7 Dozer Operator hrs $26.00 290 $7,540
Cat 651 Waterwagon hrs $115.90 290 $33,612
Cat 651 Waterwagon Operator hrs $23.25 290 $6,743
Cat 14H Motorgrader hrs $77.15 290 $22,374
Cat 14H Motorgrader Operator hrs $28.78 290 $8,345
Rock Cost Delivered CY $6.60 70,455 $464,671
Equipment Maintenance (Butler) hrs $22.45 870 $19,536
Total Place Rock Armor and Rip Rap Filter $588,363
Quality Control
Resource Description Units Cost/Unit Task Units Task Cost
Quality Control Contractor hrs $62.00 1,200 $74,400
Total Quality Control $74,400
TOTAL RECLAMATION OF CELL 3 $2,067,154
8/5/2016 - 10:59 AM - WMM Rec Plan Est August 2016 Rev 5.1 Estimate Revision 5.1.1 Energy Fuels Resources (USA) Inc.
White Mesa Mill
Volume Calculation - Cell 3 Reviewed 02/25/16
1) Area of Cell 3 -3,234,252 sq ft = 74.25 acres
2) Area of Cell 3 still open as of January 2015
3.0 acres Use 131,328 sq ft
3) Assumptions
- Bridging layer is placed using random fill from piles east and west of Cell 3-Dewatering estimated at 12 years.
- Cell will be graded to Design elevation utilizing finer materials in random fill stockpiles and from "clay" stockpiles.
- Clay will be mined, blended, and hauled from borrow site location in Section 16 - four miles south of the mill area, using belly dump trucks, clay layer on top of Cell only
- The upper 1 foot of random fill will be placed utilizing the fine random fill and clay stockpiles
- Rock for side armor, top armor and toe aprons will come from an off-site gravel source
one (1) mile north of Blanding. Rock will be produced through screening, stockpiled and trucked to the site at the time of use. Belly dump trucks will dump gravel in windrows
on the top and sides of the Cell.
4) Bridging Layer ( Platform Fill ) Remaining to be placed
131,328 sq ft X 3 ft. / 27 cubic feet per cubic yard =14,592 cubic yards
- The cost to Blast Load and Haul the material from the Cell 1 channel is accounted for in the channel construction.
5) Bring Platform Fill up to Design elevation (Lower Random)Assume full area of Cell X one (1) foot thick
3,234,252 sq ft X 1 ft. / 27 cubic feet per cubic yard =119,787 cubic yards
6) Placement of Clay Layer ( One (1) foot thick on top of Cell only )Assume full area of Cell X one (1) foot thick
3,234,252 sq ft X 1 ft. / 27 cubic feet per cubic yard =119,787 cubic yards
Use 120,000 cubic yards
WMM Rec Plan Est August 2016 Rev 5.1 Estimate Revision 5.1.1
Volume Calculation - Cell 3 (con't) page 2
7) Upper Random Fill Volume - Top of Cell area
Assume full area of Cell X one (2) foot thick - 4 trucks, 1 loader and 1 excavator used to load and haul the random fill.
- A dozer will spread the material, a water truck will moisture condition prior to being compacted with the compactor. - A road grader and water wagon will maintain the haul roads.
3,234,252 sq ft X 2 ft. / 27 cubic feet per cubic yard =239,574 cubic yards
Use 240,000 cubic yards
8) Armor Protection - Top of CellAssume full area of Cell X one-half (0.5) foot thick
3,234,252 sq ft X 0.5 ft. / 27 cubic feet per cubic yard =59,894 cubic yards
Use 60,000 cubic yards
9) Cell 3 North Slope ( Slope #6 ) common with Cell 2 No clay on slopes. Toe apron only at base of
long slope or where drainage is directed.Average height 2 feetLength 1100 feet
a) Random fill to reduce slope from 3:1 to 5:1
First Wedge [2 X 2 X 5)/2] X 1100
=11,000 cubic feet/ 27 =407 cubic yards
Use 410 cubic yards
Remaining Random Fill
[5 X 5 X 5)/2 - (2 X 2 X 5)/2] X 1100
=57,750 cubic feet/ 27 =2,139 cubic yards
Use 2,200 cubic yards
Total Random Fill North Slope 2,610 cubic yards
b) Rock Armor 8" thick - 0.67 feet
[5.67 X 5.67 X 5)/2 - (5 X 5 X 5)/2] X 1100
=19,659 cubic feet/ 27 =728 cubic yards
Use 730 cubic yards
c) Rip Rap Filter 6" thick - 0.5 feet
[5.5 X 5.5 X 5)/2 - (5 X 5 X 5)/2] X 1100
=14,438 cubic feet/ 27 =535 cubic yards
Use 550 cubic yards
d) Toe Apron No rock required
Total Rock Armor Cell 3 north Slope 730 cubic yards
WMM Rec Plan Est August 2016 Rev 5.1 Estimate Revision 5.1.1
Volume Calculation - Cell 3 (con't) page 3
10) Cell 3 South Dike, west end ( Slope #7 )
Average height 16 feetLength 1750 feet
a) Random fill to reduce slope from 3:1 to 5:1
First Wedge [16 X 16 X 5)/2 - (16 X 16 X 3)/2] X 1750
=448,000 cubic feet/ 27 =16,593 cubic yards
Use 16,600 cubic yards
Remaining Random Fill
[19 X 19 X 5)/2 - (16 X 16 X 5)/2] X 1750
=459,375 cubic feet/ 27 =17,014 cubic yards
Use 17,100 cubic yards
Total Random Fill North Slope 33,700 cubic yards
b) Rock Armor 8" thick - 0.67 feet
[19.67 X 19.67 X 5)/2 - (19 X 19 X 5)/2] X 1750
=113,351 cubic feet/ 27 =4,198 cubic yards
Use 4,200 cubic yards
c) Rip Rap Filter 6" thick - 0.5 feet
[19.5 X 19.5 X 5)/2 - (519 X 19 X 5)/2] X 1750
=84,219 cubic feet/ 27 =3,119 cubic yards
Use 3,200 cubic yards
d) Rock Apron at toe of slope [2ft X 7ft wide X 1750 long] / 27 =907
Use 1,000 cubic yards
Total Rock Armor Slope #7 5,200 cubic yards
WMM Rec Plan Est August 2016 Rev 5.1 Estimate Revision 5.1.1
Volume Calculation - Cell 3 (con't) page 4
11) Cell 3 South Dike ( Slope #8 )VOLUME DELETED. AREA FILLED WITH CELL 4A TAILINGS
a) Random Fill No existing Dike [(4 X 4 X 5) / 2] X 800 /27 =1185 cubic yards
Use 1,200 cubic yards
Total Random Slope #4 1,200 cubic yards
b) Rock Armor 8" thick - 0.67 feet 14.52 cubic feet per linear foot of dike
14.52 cubic foot per linear foot X 800 / 27
=430 cubic feet/ 27 =430 cubic yards
Use 450 cubic yards
c) Rip Rap Filter 6" thick - 0.5 feet
10.84 cubic foot per linear foot X 800 / 27
=321 cubic feet/ 27 =321 cubic yardsUse 325 cubic yards
d) Toe Apron Not required
Total Rock Armor Cell 3 East Slope 450 cubic yards
WMM Rec Plan Est August 2016 Rev 5.1 Estimate Revision 5.1.1
Volume Calculation - Cell 3 (con't) page 5
Volume Summary - Cell 3
Bridging Layer
Lower
Random Clay
Upper
Random Rock Armor Rip Rap Filter
Top of Cell 14,592 119,787 120,000 240,000 60,000 0
West ( Slope #6 ) 410 2,200 730 550
South ( Slope #7 )16,600 17,100 5,200 3,200
East ( Slope #9 )1,200 450 325
Totals 14,592 136,797 120,000 260,500 66,380 4,075
WMM Rec Plan Est August 2016 Rev 5.1 Estimate Revision 5.1.1
Volume Calculation - Cell 3 (con't) page 6
Cell 3 Reclamation
Cat 637 Resource Requirements
Volume Route Yds/hr % Equip. Hr.
Cell 3 Bridging Lift
Tailings Surface 14,592 C 285 100%51.3
Cell 3 Lower Random Fill
Tailings Surface 119,787 C 285 100%420.8
Slope 6 410 C 285 100%1.4
Slope 7 16,600 C 285 100%58.3
Slope 9 - C 285 100%0.0
Total 480.5
Trucking Fleet Requirements
Cell 3 Upper Random Fill Volume Route Yds/hr per Truck % Equip. Hr.
Tailings Surface 154,990 C 258 100%601.2
Tailings Surface 85,010 D 311 100%273.5
Slope 6 2,200 D 311 100%7.1
Slope 7 17,100 D 311 100%55.0
Slope 9 1,200 D 311 100%3.9
Total 260,500 940.7
Cell 3 Rock Armor -- use Highway Trucks
WMM Rec Plan Est August 2016 Rev 5.1 Estimate Revision 5.1.1
Volume Calculation - Cell 3 (con't) page 7
Clay Production Cell 3
( use same assumptions as Cell 2 )
Clay Volume =120,000 Bank Cubic Yards (BCY)
0.8 Swell Factor
=150,000 Loose Cubic Yards (LCY)
Trucking 475 LCY/hr 8 trucks plus one (1) Loader
150,000 LCY / 475 LCY/hr =316 hours
use 320 hours
320 X 8 Trucks = 2560 hours
Hours
980 Loader 320
D8N w/ ripper 320
Cat 651 WW 320
Cat 825 Comp 350
14G Patrol 350
5000 gal WW 175
Rock Armor and Rip Rap Filter Production Cell 3
70,455 cubic yards (cy)
38 cy per hour times 8 trucks
304 cy per hour delivered
Assume 25% extra time for spreading, loading and screen wait
304 / 1.25 243.2 cy per hour 290 Hours
WMM Rec Plan Est August 2016 Rev 5.1 Estimate Revision 5.1.1
Cell 4A
RECLAMATION OF CELL 4A
Dewatering of Cell 4A
Resource Description Units Cost/Unit Task Units Task Cost
Dewatering of Cell 4A (6 yrs) hrs $0.48 52,560 $25,269
Total Dewatering of Cell 4A $25,269
Place Bridging (Platform) Lift
Resource Description Units Cost/Unit Task Units Task Cost
Cat 637 Scraper hrs $221.91 554 $123,045
Cat 637 Scraper Operators hrs $28.78 554 $15,956
Cat 825 Compactor hrs $101.99 139 $14,138
Cat 825 Compactor Operator hrs $23.25 139 $3,223
Cat D8N Dozer With Ripper hrs $103.84 139 $14,393
Cat D8N Dozer Operator hrs $26.00 139 $3,604
Cat D7 Dozer hrs $88.08 139 $12,209
Cat D7 Dozer Operator hrs $26.00 139 $3,604
Cat 651 Waterwagon hrs $115.90 139 $16,066
Cat 651 Waterwagon Operator hrs $23.25 139 $3,223
Cat 14H Motorgrader hrs $77.15 139 $10,695
Cat 14H Motorgrader Operator hrs $28.78 139 $3,989
Equipment Maintenance (Butler) hrs $22.45 1,248 $28,014
Total Place Bridging (Platform) Lift $252,158
Place Lower Random Fill
Resource Description Units Cost/Unit Task Units Task Cost
Cat 637 Scraper hrs $221.91 461 $102,404
Cat 637 Scraper Operators hrs $28.78 461 $13,280
Cat 825 Compactor hrs $101.99 115 $11,766
Cat 825 Compactor Operator hrs $23.25 115 $2,682
Cat D8N Dozer With Ripper hrs $88.08 115 $10,161
Cat D8N Dozer Operator hrs $26.00 115 $2,999
Cat D7 Dozer hrs $77.15 115 $8,901
Cat D7 Dozer Operator hrs $26.00 115 $2,999
Cat 651 Waterwagon hrs $115.90 115 $13,371
Cat 651 Waterwagon Operator hrs $23.25 115 $2,682
Cat 14H Motorgrader hrs $77.15 115 $8,901
Cat 14H Motorgrader Operator hrs $28.78 115 $3,320
Equipment Maintenance (Butler) hrs $22.45 1,038 $23,314
Total Place Lower Random Fill $206,781
8/5/2016 - 11:01 AM - WMM Rec Plan Est August 2016 Rev 5.1 Estimate Revision 5.1.1 Energy Fuels Resources (USA) Inc.
White Mesa Mill
RECLAMATION OF CELL 4A
Clay Layer
Resource Description Units Cost/Unit Task Units Task Cost
Cat 825 Compactor hrs $101.99 200 $20,398
Cat 825 Compactor Operator hrs $23.25 200 $4,650
Cat D8N Dozer With Ripper hrs $103.84 180 $18,690
Cat D8N Dozer Operator hrs $26.00 180 $4,680
Cat 651 Waterwagon hrs $115.90 180 $20,862
Cat 651 Waterwagon Operator hrs $23.25 180 $4,185
Cat 14H Motorgrader hrs $77.15 200 $15,431
Cat 14H Motorgrader Operator hrs $28.78 200 $5,755
Cat 980 Loader hrs $100.39 150 $15,059
Cat 980 Loader Operator hrs $26.00 150 $3,900
5000 Gallon Water Truck hrs $67.74 150 $10,161
5000 Gallon Water Truck Operator hrs $23.25 150 $3,488
Highway Trucks hrs $33.70 1,440 $48,527
Truck Drivers hrs $21.30 1,440 $30,673
Equipment Maintenance (Butler) hrs $22.45 1,060 $23,802
Total Place Clay Layer $230,262
Upper Random Fill
Resource Description Units Cost/Unit Task Units Task Cost
Cat 365 Excavator hrs $139.69 219 $30,575
Cat 365 Excavator Operator hrs $28.78 219 $6,299
Cat 770 Truck (3 trucks in Fleet) hrs $102.19 657 $67,103
Truck Drivers hrs $21.30 657 $13,986
Cat 825 Compactor hrs $101.99 219 $22,323
Cat 825 Compactor Operator hrs $23.25 219 $5,089
Cat D7 Dozer hrs $88.08 219 $19,278
Cat D7 Dozer Operator hrs $26.00 219 $5,691
Cat 651 Waterwagon hrs $115.90 219 $25,368
Cat 651 Waterwagon Operator hrs $23.25 219 $5,089
Cat 14H Motorgrader hrs $77.15 219 $16,887
Cat 14H Motorgrader Operator hrs $28.78 219 $6,299
5000 Gallon Water Truck hrs $67.74 219 $14,827
5000 Gallon Water Truck Operator hrs $23.25 219 $5,089
Equipment Maintenance (Butler) hrs $22.45 1,970 $44,233
Total Place Upper Random Fill $170,172
8/5/2016 - 11:01 AM - WMM Rec Plan Est August 2016 Rev 5.1 Estimate Revision 5.1.1 Energy Fuels Resources (USA) Inc.
White Mesa Mill
RECLAMATION OF CELL 4A
Rock Armor and Filter Layer
Resource Description Units Cost/Unit Task Units Task Cost
Cat D7 Dozer hrs $88.08 240 $21,139
Cat D7 Dozer Operator hrs $26.00 240 $6,240
Cat 651 Waterwagon hrs $115.90 240 $27,816
Cat 651 Waterwagon Operator hrs $23.25 240 $5,580
Cat 14H Motorgrader hrs $77.15 240 $18,517
Cat 14H Motorgrader Operator hrs $28.78 240 $6,907
Rock Cost Delivered CY $6.60 48,695 $321,157
Equipment Maintenance (Butler) hrs $22.45 720 $16,167
Total Place Rock Armor and Filter Layer $423,523
Quality Control
Resource Description Units Cost/Unit Task Units Task Cost
Quality Control Contractor hrs $62.00 1,045 $64,790
Total Quality Control $64,790
TOTAL RECLAMATION OF CELL 4A $1,372,956
8/5/2016 - 11:01 AM - WMM Rec Plan Est August 2016 Rev 5.1 Estimate Revision 5.1.1 Energy Fuels Resources (USA) Inc.
White Mesa Mill
Volume Calculation - Cell 4A
Reviewed 2/25/16
1) Area of Cell 1,785,960 sq ft = 41.00 acres
2) Assumptions
- Bridging layer is placed using random fill from piles east of Cell 4A
- Dewatering estimated at 6 years.
- Cell will be graded to Design elevation utilizing finer materials in random fill stockpiles
and from "clay" stockpiles.
- Clay will be mined, blended, and hauled from borrow site location in Section 16 -
four miles south of the mill area, using belly dump trucks, clay layer on top of Cell only.
- The upper 1 foot of random fill will be placed utilizing the fine random fill and clay stockpiles
- Rock for side armor, top armor and toe aprons will come from an off-site gravel source
one (1) mile north of Blanding. Rock will be produced through screening, stockpiled and
trucked to the site at the time of use. Belly dump trucks will dump gravel in windrows
on the top and sides of the Cell.
3) Bridging Layer ( Platform Fill ) Remaining to be placed
1,785,960 sq ft X 3 ft. / 27 cubic feet per cubic yard = 198,440 cubic yards
Use 198,500 cubic yards
4) Bring Platform Fill up to Design elevation (Lower Random)
Assume full area of Cell X one (1) foot thick
1,785,960 sq ft X 1 ft. / 27 cubic feet per cubic yard = 66,147 cubic yards
Use 66,000 cubic yards
5) Placement of Clay Layer ( One (1) foot thick on top of Cell only )
Assume full area of Cell X one (1) foot thick
1,785,960 sq ft X 1 ft. / 27 cubic feet per cubic yard = 66,147 cubic yards
Use 66,000 cubic yards
Volume Calculation - Cell 4A (con't) page 2
6) Upper Random Fill Volume - Top of Cell area
Assume full area of Cell X one (2) foot thick
- 3 trucks, 1 excavator used to load and haul the random fill.
- A dozer will spread the material, a water truck will moisture condition prior to being compacted.
- A road grader and water wagon will maintain the haul roads.
1,785,960 sq ft X 2 ft. / 27 cubic feet per cubic yard = 132,293 cubic yards
Use 132,500 cubic yards
7) Armor Protection - Top of Cell
Assume full area of Cell X one-half (0.5) foot thick
1,785,960 sq ft X 0.5 ft. / 27 cubic feet per cubic yard = 33,073 cubic yards
Use 33,000 cubic yards
8) Cell 4A South Dike, ( Slope #1 )
Average heigh 36 feet
Length 1600 feet
a) Random fill to reduce slope from 3:1 to 5:1
First Wedge [36 X 36 X 5)/2 - (36 X 36 X 3)/2] X 1600
= 2,073,600 cubic feet/ 27 = 76,800 cubic yards
- 43,479 CY of material will come from the excavated channel within Cell 1. (43,479) cubic yards
- The cost to load, haul and stage the material is included in Cell 1 channel construction.
Use 33,321 cubic yards
Remaining Random Fill
[39 X 39 X 5)/2 - (36 X 36 X 5)/2] X 1600
= 900,000 cubic feet/ 27 = 33,333 cubic yards
Use 34,000 cubic yards
Total Random Fill South Slope 110,800 cubic yards
b) Rock Armor 8" thick - 0.67 feet
[39.67 X 39.67 X 5)/2 - (39 X 39 X 5)/2] X 1600
= 210,836 cubic feet/ 27 = 7,809 cubic yards
Use 7,800 cubic yards
Volume Calculation - Cell 4A (con't) page 3
c) Rip Rap Filter 6" thick - 0.5 feet
[39.5 X 39.5 X 5)/2 - (39 X 39 X 5)/2] X 1600
= 157,000 cubic feet/ 27 =5,815 cubic yards
Use 6,000 cubic yards
d) Rock Apron at toe of slope [2ft X 7ft wide X 1600 long] / 27 = 830
Use 850 cubic yards
Total Rock Armor South Slope 8,650 cubic yards
9) Cell 4A East Slope ( Slope #2 )
Average heigh 8 feet
Length 1200 feet
a) Random fill to reduce slope from 3:1 to 5:1
First Wedge [8 X 8 X 5)/2 - (8 X 8 X 3)/2] X 1200
= 76,800 cubic feet/ 27 = 1185 cubic yards
Use 1,200 cubic yards
Remaining Random Fill
[11 X 11 X 5)/2 - (8 X 8 X 5)/2] X 1200
= 171,000 cubic feet/ 27 = 6,333 cubic yards
Use 6,500 cubic yards
Total Random Slope #3 7,700 cubic yards
b) Rock Armor 8" thick - 0.67 feet 14.52 cubic feet per linear foot of dike
14.52 cubic foot per linear foot X 1200 / 27
= 645 cubic feet/ 27 = 24 cubic yards
Use 25 cubic yards
c) Rip Rap Filter 6" thick - 0.5 feet
10.84 cubic foot per linear foot X 1200 / 27
Volume Calculation - Cell 4A (con't) page 4
= 482 cubic feet/ 27 =18 cubic yards
Use 20 cubic yards
c) Toe Apron Not required
Total Rock Armor Cell 4A East Slope 25 cubic yards
Volume Summary - Cell 4A
Bridging
Layer
Lower
Random Clay
Upper
Random Rock Armor Rip Rap Filter
Top of Cell 198,500 66,000 66,000 132,500 33,000 0
South ( Slope #1 ) 33,321 34,000 8,650 6,000
East ( Slope #2 ) 1,200 6,500 25 20
Totals 198,500 100,521 66,000 173,000 41,675 6,020
Volume Calculation - Cell 4A (con't) page 5
Cell 4A Reclamation
Cat 637 Resource Requirements
Volume Route Yds/hr % Equip. Hr.
Cell 4A Bridging Lift
Tailings Surface 198,500 A 358 100% 554.9
Cell 4A Lower Random Fill
Tailings Surface 37,500 B 303 100% 123.7
Tailings Surface 28,500 A 358 100% 79.7
Slope 1 33,321 B 303 100% 109.9
Slope 2 1,200 B 303 100% 4.0
Total 317.2
Trucking Fleet Requirements
Cell 4A Upper Random Fill
Tailings Surface 132,500 B 263 100% 502.9
Slope 1 34,000 B 263 100% 129.0
Slope 2 6,500 B 263 100% 24.7
Total 656.6
Cell 4A Rock Armor -- use Highway Trucks
Volume Route % Equip. Hr.
Yds/hr per
truck
Volume Calculation - Cell 4A (con't) page 6
Clay Production Cell 4A
( use same assumptions as Cell 2 )
Clay Volume = 66,000 Bank Cubic Yards (BCY)
0.8 Swell Factor
= 82,500 Loose Cubic Yards (LCY)
Trucking 475 LCY/hr 8 trucks plus one (1) Loader
85,000 LCY / 475 LCY/hr =174 hours
use 180 hours
180 X 8 Trucks = 1,440 hours
Machine Hours
980 Loader 180
D8N w/ ripper 180
Cat 651 WW 180
Cat 825 Comp 200
14G Patrol 200
5000 gal WW 150
Volume Calculation - Cell 4A (con't) page 7
Rock Armor and Filter Layer Production Cell 4A
47,695 cubic yards (cy)
38 cy per hour times 8 trucks
304 cy per hour delivered
Assume 25% extra time for spreading, loading and screen wait
304 / 1.25 243.2 cy per hour 196 Hours
Cell 4A Capacity 2014 1,190,000 tons
991,667 cy
Source Cell 1 Crystals 286,189 cy
Cell 1 Cont Mat 95,396 cy
Demo Mat 663 hr
Demo Mat Vol 265,250 cy
Mill Cont Mat 240,921 cy
Cell 4B Cont Mat 66,147 cy
Total 953,902 cy
Cell 4B
RECLAMATION OF CELL 4B
Dewatering of Cell 4B
Resource Description Units Cost/Unit Task Units Task Cost
Dewatering of Cell 4B (1 Yr) hrs $0.48 8,760 $4,212
Total Dewatering of Cell 4B $4,212
Place Bridging (Platform) Lift
Resource Description Units Cost/Unit Task Units Task Cost
Cat 637 Scraper hrs $221.91 660 $146,463
Cat 637 Scraper Operators hrs $28.78 660 $18,993
Cat 825 Compactor hrs $101.99 165 $16,829
Cat 825 Compactor Operator hrs $23.25 165 $3,836
Cat D8N Dozer With Ripper hrs $103.84 165 $17,133
Cat D8N Dozer Operator hrs $26.00 165 $4,290
Cat D7 Dozer hrs $88.08 165 $14,533
Cat D7 Dozer Operator hrs $26.00 165 $4,290
Cat 651 Waterwagon hrs $115.90 165 $19,124
Cat 651 Waterwagon Operator hrs $23.25 165 $3,836
Cat 14H Motorgrader hrs $77.15 165 $12,730
Cat 14H Motorgrader Operator hrs $28.78 165 $4,748
Equipment Maintenance (Butler) hrs $22.45 1,485 $33,345
Total Place Bridging (Platform) Lift $300,151
Place Lower Random Fill
Resource Description Units Cost/Unit Task Units Task Cost
Cat 637 Scraper hrs $221.91 480 $106,519
Cat 637 Scraper Operators hrs $28.78 480 $13,813
Cat 825 Compactor hrs $101.99 120 $12,239
Cat 825 Compactor Operator hrs $23.25 120 $2,790
Cat D8N Dozer With Ripper hrs $103.84 120 $12,460
Cat D8N Dozer Operator hrs $26.00 120 $3,120
Cat D7 Dozer hrs $88.08 120 $10,569
Cat D7 Dozer Operator hrs $26.00 120 $3,120
Cat 651 Waterwagon hrs $115.90 120 $13,908
Cat 651 Waterwagon Operator hrs $23.25 120 $2,790
Cat 14H Motorgrader hrs $77.15 120 $9,258
Cat 14H Motorgrader Operator hrs $28.78 120 $3,453
Equipment Maintenance (Butler) hrs $22.45 1,080 $24,251
Total Place Lower Random Fill $218,292
Clay Layer
Resource Description Units Cost/Unit Task Units Task Cost
Cat 637 Scraper hrs $221.91 0 $0
Cat 637 Scraper Operators hrs $28.78 0 $0
Cat 825 Compactor hrs $101.99 200 $20,398
Cat 825 Compactor Operator hrs $23.25 200 $4,650
Cat D8N Dozer With Ripper hrs $103.84 180 $18,690
Cat D8N Dozer Operator hrs $26.00 180 $4,680
Cat D7 Dozer hrs $88.08 0 $0
Cat D7 Dozer Operator hrs $26.00 0 $0
Cat 651 Waterwagon hrs $115.90 180 $20,862
Cat 651 Waterwagon Operator hrs $23.25 180 $4,185
Cat 14H Motorgrader hrs $77.15 200 $15,431
Cat 14H Motorgrader Operator hrs $28.78 200 $5,755
Cat 980 Loader hrs $100.39 150 $15,059
Cat 980 Loader Operator hrs $26.00 150 $3,900
5000 Gallon Water Truck hrs $67.74 150 $10,161
5000 Gallon Water Truck Operator hrs $23.25 150 $3,488
Highway Trucks hrs $31.75 1,440 $45,719
Truck Drivers hrs $23.25 1,440 $33,481
Equipment Maintenance (Butler) hrs $22.45 1,060 $23,802
Total Place Clay Layer $230,262
Upper Random Fill
Resource Description Units Cost/Unit Task Units Task Cost
Cat 637 Scraper hrs $221.91 570 $126,491
Cat 637 Scraper Operators hrs $28.78 570 $16,403
Cat 825 Compactor hrs $101.99 143 $14,534
Cat 825 Compactor Operator hrs $23.25 143 $3,313
Cat D8N Dozer With Ripper hrs $103.84 143 $14,796
Cat D8N Dozer Operator hrs $26.00 143 $3,705
Cat D7 Dozer hrs $88.08 143 $12,551
Cat D7 Dozer Operator hrs $26.00 143 $3,705
Cat 651 Waterwagon hrs $115.90 143 $16,516
Cat 651 Waterwagon Operator hrs $23.25 143 $3,313
Cat 14H Motorgrader hrs $77.15 143 $10,994
Cat 14H Motorgrader Operator hrs $28.78 143 $4,101
5000 Gallon Water Truck hrs $67.74 143 $9,653
5000 Gallon Water Truck Operator hrs $23.25 143 $3,313
Equipment Maintenance (Butler) hrs $22.45 1,425 $31,998
Total Place Upper Random Fill $275,388
Rock Armor and Filter Layer
Resource Description Units Cost/Unit Task Units Task Cost
Cat D7 Dozer hrs $88.08 200 $17,616
Cat D7 Dozer Operator hrs $26.00 200 $5,200
Cat 651 Waterwagon hrs $115.90 200 $23,180
Cat 651 Waterwagon Operator hrs $23.25 200 $4,650
Cat 14H Motorgrader hrs $77.15 200 $15,431
Cat 14H Motorgrader Operator hrs $28.78 200 $5,755
Rock Cost Delivered CY $6.60 48,695 $321,157
Equipment Maintenance (Butler) hrs $22.45 600 $13,473
Total Place Rock Armor and Filter Layer $406,462
Quality Control
Resource Description Units Cost/Unit Task Units Task Cost
Quality Control Contractor hrs $62.00 1,045 $64,790
Total Quality Control $64,790
TOTAL RECLAMATION OF CELL 4B $1,499,557
Volume Route Yds/ Hr
Cell 4B Bridging Lift
Tailings Surface 198,500 2 303 100% 655.1
Cell 4B Lower Random Fill
Tailings Surface 66,000 2 303 100% 217.8
South Slope 77,000 2 303 100% 254.1
West Slope 1,200 2 303 100% 4.0
475.9
Cell 4B Upper Random Fill
Tailings Surface 132,000 2 303 100% 435.6
South Slope 34,000 2 303 100% 112.2
West Slope 6,500 2 303 100% 21.5
569.3
Rock Armor
Rip Rap 42,675 100%
Filter 6,020 100%
Equip Hours
Volume Calculation - Cell 4B
Reviewed 2/25/16
1) Area of Cell 4B 1,785,960 sq ft = 41 acres
2) Assumptions
- Bridging layer is placed using random fill from piles west of Cell 4B
- Cell will be graded to Design elevation utilizing finer materials in random fill stockpiles
and from "clay" stockpiles.
- Clay will be mined, blended, and hauled from borrow site location in Section 16 -
four miles south of the mill area, using belly dump trucks, clay layer on top of Cell only.
- The upper 1 foot of random fill will be placed utilizing the fine random fill and clay stockpiles
- Rock for side armor, top armor and toe aprons will come from an off-site gravel source
one (1) mile north of Blanding. Rock will be produced through screening, stockpiled and
trucked to the site at the time of use. Belly dump trucks will dump gravel in windrows
on the top and sides of the Cell.
3) Bridging Layer ( Platform Fill ) Remaining to be placed
1,785,960 sq ft X 3 ft. / 27 cubic feet per cubic yard = 198,440 cubic yards
Use 198,500 cubic yards
4) Bring Platform Fill up to Design elevation (Lower Random)
Assume full area of Cell X one (1) foot thick
1,785,960 sq ft X 1 ft. / 27 cubic feet per cubic yard = 66,147 cubic yards
Use 66,000 cubic yards
5) Placement of Clay Layer ( One (1) foot thick on top of Cell only )
Assume full area of Cell X one (1) foot thick
1,785,960 sq ft X 1 ft. / 27 cubic feet per cubic yard = 66,147 cubic yards
Use 66,000 cubic yards
Volume Calculation - Cell 4B (con't) page 2
6) Upper Random Fill Volume - Top of Cell area
Assume full area of Cell X one (2) foot thick
1,785,960 sq ft X 2 ft. / 27 cubic feet per cubic yard = 132,293 cubic yards
Use 132,000 cubic yards
7) Armor Protection - Top of Cell
Assume full area of Cell X one-half (0.5) foot thick
1,785,960 sq ft X 0.5 ft. / 27 cubic feet per cubic yard = 33,073 cubic yards
Use 33,000 cubic yards
8) Cell 4B South Dike, ( Slope #1 )
Average height 36 feet
Length 1600 feet
a) Random fill to reduce slope from 3:1 to 5:1
First Wedge [36 X 36 X 5)/2 - (36 X 36 X 3)/2] X 1600
= 2,073,600 cubic feet/ 27 = 76,800 cubic yards
Use 77,000 cubic yards
Remaining Random Fill
[39 X 39 X 5)/2 - (36 X 36 X 5)/2] X 1600
= 900,000 cubic feet/ 27 = 33,333 cubic yards
Use 34,000 cubic yards
Total Random Fill South Slope 111,000 cubic yards
b) Rock Armor 8" thick - 0.67 feet
[39.67 X 39.67 X 5)/2 - (39 X 39 X 5)/2] X 1600
= 210,836 cubic feet/ 27 = 7,809 cubic yards
Use 7,800 cubic yards
Volume Calculation - Cell 4B (con't) page 3
c) Rip Rap Filter 6" thick - 0.5 feet
[39.5 X 39.5 X 5)/2 - (39 X 39 X 5)/2] X 1600
= 157,000 cubic feet/ 27 =5,815 cubic yards
Use 6,000 cubic yards
d) Rock Apron at toe of slope [2ft X 7ft wide X 1600 long] / 27 = 830
Use 850 cubic yards
Total Rock Armor South Slope 8,650 cubic yards
9) Cell 4B West Slope ( Slope #2 )
Average height 8 feet
Length 1200 feet
a) Random fill to reduce slope from 3:1 to 5:1
First Wedge [8 X 8 X 5)/2 - (8 X 8 X 3)/2] X 1200
= 76,800 cubic feet/ 27 = 1185 cubic yards
Use 1,200 cubic yards
Remaining Random Fill
[11 X 11 X 5)/2 - (8 X 8 X 5)/2] X 1200
= 171,000 cubic feet/ 27 = 6,333 cubic yards
Use 6,500 cubic yards
Total Random Slope #3 7,700 cubic yards
b) Rock Armor 8" thick - 0.67 feet 14.52 cubic feet per linear foot of dike
14.52 cubic foot per linear foot X 1200 / 27
= 645 cubic feet/ 27 = 24 cubic yards
Use 25 cubic yards
c) Rip Rap Filter 6" thick - 0.5 feet
10.84 cubic foot per linear foot X 1200 / 27
Volume Calculation - Cell 4B (con't) page 4
= 482 cubic feet/ 27 =18 cubic yards
Use 20 cubic yards
c) Toe Apron Not required
Total Rock Armor Cell 4B West Slope 25 cubic yards
Volume Summary - Cell 4B
Bridging
Layer
Lower
Random Clay
Upper
Random
Rock
Armor Rip[ Rap Filter
Top of Cell 198,500 66,000 66,000 132,000 33,000 0
South ( Slope #1 ) 77,000 34,000 8,650 6,000
West ( Slope #3 ) 1,200 6,500 25 20
Totals 198,500 144,200 66,000 172,500 41,675 6,020
Volume Calculation - Cell 4B (con't) page 5
Cell 4B Reclamation
Cat 637 Resource Requirements
Volume Route Yds/hr % Equip. Hr.
Cell 4B Bridging Lift
Tailings Surface 198,500 B 303 100% 654.6
Cell 4B Lower Random Fill
Tailings Surface 66,000 B 303 100% 217.6
Slope 1 77,000 B 303 100% 253.9
Slope 2 1,200 B 303 100% 4.0
Total 475.5
Cell 4B Upper Random Fill
Tailings Surface 132,000 B 303 100% 435.3
Slope 1 34,000 B 303 100% 112.1
Slope 2 6,500 B 303 100% 21.4
Total 568.8
Cell 4B Rock Armor -- use Highway Trucks
Volume Calculation - Cell 4B (con't) page 6
Clay Production Cell 4B
( use same assumptions as Cell 2 )
Clay Volume = 66,000 Bank Cubic Yards (BCY)
0.8 Swell Factor
= 82,500 Loose Cubic Yards (LCY)
Trucking 475 LCY/hr 8 trucks plus one (1) Loader
174 hours
use 180 hours
1,440 hours
Machine Hours
980 Loader 180
D8N w/ ripper 180
Cat 651 WW 180
Cat 825 Comp. 200
14G Patrol 200
5000 gal WW 150
Rock Armor and Filter Layer Production Cell 4B
47,695 cubic yards (cy)
38 cy per hour times 8 trucks
304 cy per hour delivered
Assume 25% extra time for spreading, loading and screen wait
304 / 1.25 243.2 cy per hour 196 Hours
85,000 LCY / 475 LCY/hr =
180 X 8 Trucks =
Miscellaneous
MISCELLANEOUS ITEMS
Decontamination Pad
Resource Description Units Cost/Unit Task Units Task Cost
Laborers hrs $17.16 8,320 $142,747
Construct Wheel Wash Facility LS $180,000 1 $180,000
Facilities constructed in 2000 & 2008 ($180,000)
Total Decontamination Facilities $142,747
Chloroform System Operation and Reclamation
Task 1: Operation for a 10 year period. 185,252$
Task 2: Maintenance for a 10 year period. 104,382$
Task 3: Monitoring for a 10 year period. 763,045$
Task 4: Reporting for a 10 year period. 101,653$
Task 5: Chloroform System Abandonment 21,920$
Sub Total 1,176,252$
Nitrate System Operation and Reclamation
Task 1: Operation for a 5 year period. -$
Task 2: Maintenance for a 5 year period. 4,349$
Task 3: Monitoring for a 5 year period. 6,864$
Task 4: Reporting for a 5 year period. 8,242$
Task 5: Nitrate System Abandonment 3,555$
Sub Total 23,010$
Notes: The Nitrate Pumping System Operation is included in the Chloroform Pumping System Operation Costs.
There is only 1 Nitrate pumping well that is not already included in the 13 wells associated with the Chloroform Pumping System.
Slimes Drain Evaporation Pond
Resource Description Units Cost/Unit Task Units Task Cost
60 mil HDPE Liner, installed sq. ft. $0.70 960,000 $672,000
Cat 637 Scraper hrs $221.91 100 $22,191
Cat 637 Scraper Operator hrs $28.78 100 $2,878
Cat 825 Compactor hrs $101.99 25 $2,550
Cat 825 Compactor Operator hrs $23.25 25 $581
Cat D7 Dozer hrs $88.08 25 $2,202
Cat D7 Dozer Operator hrs $26.00 25 $650
Cat 651 Waterwagon hrs $115.90 25 $2,898
Cat 651 Waterwagon Operator hrs $23.25 25 $581
Cat 14H Motorgrader hrs $77.15 25 $1,929
Cat 14H Motorgrader Operator hrs $28.78 25 $719
Equipment Maintenance (Butler) hrs $22.45 200 $4,491
Total Slimes Drain Evaporation Pond $713,670
TOTAL MISCELLANEOUS ITEMS $2,055,680
Maintenance is scaled from the Chloroform estimate based on the ratio of pumping wells (1 Nitrate Pumping well /
13 Chloroform Pumping Wells and 5 years instead of 10 years)
Reporting is scaled from the Chloroform estimate based on the ratio of total wells (6 Nitrate wells / 37 Chloroform
Wells and 5 years instead of 10 years)
Abandonment is scaled from the Chloroform estimate based on the ratio of total wells (6 Nitrate wells / 37
Chloroform Wells)
Monitoring is based on an analytical cost of $345 per quarter for 5 years.
8/5/2016 - 11:03 AM - WMM Rec Plan Est August 2016 Rev 5.1 Estimate Revision 5.1.1 Energy Fuels Resources (USA) Inc.White Mesa Mill
Chloroform Pumping System
Chloroform Pumping System - Required Surety Estimate
Task 1: Operation for a 10 year period.
AssumptionsThe full Chloroform pumping and monitoring system has already been installed.
Operation will be performed by the Environmental Technician at $30.890 per hour
Environmental Technician will be local labor hired by a DWMRC Contractor. A 15% markup has been applied to the actual labor rate
Daily operation checks take 1.0 hours for 1 Environmental Technician. Weekly operation checks take 3.0 hours for 1 Environmental Technician.Measure Depth to Water Monthly 6 hours for 1 Environmental Technician.
Power $0.07/KWHAverage power of each pump motor = 0.75 hp.
Average pumping time per day = 1.1 hr.
Item Quantity Units Quantity Units CostDaily Operation Checks - Labor 1 Hrs/Day 365 hrs/Yr 11,274$ Weekly Operation Checks - Labor 3 Hrs/Wk 156 hrs/Yr 4,819$
Measure Depth to Water Monthly 6 Hrs/Month 72 hrs/Yr 2,224$
Pumping hours per well per quarter 1.1 Hrs/Day 401.5 hrs/Yr 16.00$
Total per year 18,525$ Total 10 years 185,252$
Task 2: Maintenance for a 10 year period.
AssumptionsMaintenance will be performed by the Environmental Technician at $30.890 per hourEnvironmental Technician will be local labor hired by a DWMRC Contractor. A 15% markup has been applied to the actual labor rate
Pump Replacement takes 4 hours for 2 Environmental Technicians.
Average of 3 pump replacements per year. Each replacement pump costs $2,200
Flow Meter Replacement takes 2 hours for 2 Environmental Technicians. Average of 4 flow meter replacements per year. Each replacement flow meter costs $245Heat lamp bulb replacement labor is included in daily operational checks. Average of 14 heat lamp bulb replacements per year. Each bulb cost $10
Average of 3 pipeline freezing per year.
Clearing of a pipeline freeze takes 8 hours for 2 Environmental Technicians. No material costs.
Item Quantity Units
Labor Hours /
Year
Material Cost
per year Cost
Pump Replacement 3 Replaced / year 24 6600 7,341$
Flow Meter Replacement 4 Replaced / year 16 980 1,474$
Heat Lamp Replacement 14 Replaced / year 0 140 140$ Frozen Pipeline Clearing 3 Clearing / year 48 0 1,483$ Total 10,438$ Total 10 years 104,382$
Water from the chloroform pumping sysytem will be pumped to the evaporation or tailings ponds or used in the Mill process. After
reclamation, the water will pumped to the Cell 2 Slimes evaporation pond. The costs associated with the Cell 2 slimes evaporation pond are included in the Miscellaneous items.
8/5/2016 - 11:03 AM-WMM Rec Plan Est August 2016 Rev 5.1 Estimate Revision 5.1.1 Energy Fuels Resources (USA) Inc.
White Mesa Mill
Task 3: Monitoring for a 10 year period.
AssumptionsAnalytical cost per sample = $16945 samples per quarter
Sample collection will be performed by an Environmental Technician and a Contractor Field Geologist
Environmental Technician = $31.89 per hour. Field Geologist = $90.00 per hour
Environmental Technician will be local labor hired by a DWMRC Contractor. A 15% markup has been applied to the actual labor rateSample collection requires 80 hours for 2 Environmental Technicians per quarter. Item Quantity Units Quantity Unit Cost
Analytical Costs 180 Samples/year 169$ $/Sample 30,420$
Sampling Labor - Environmental Technician 320 Hrs/year 30.89$ $/hr 9,884$ Sampling Labor - Field Geologist 320 Hrs/year 90.00$ $/hr 28,800$ Field Geologist - Travel Costs 40 Days/year 180.00$ $/day 7,200$ Total 76,304$
Total 10 years 763,044.67$
Task 4: Reporting for a 10 year period.
AssumptionsReporting will be performed by the Environmental Technician at $30.890 per hour
Environmental Technician will be local labor hired by a DWMRC Contractor. A 15% markup has been applied to the actual labor rate
Report preparation is expected to take 40 hours for the Environmental Technician to complete each quarter.
Quarterly analysis of contamination extent is estimated to cost $3,000.
Item Quantity Units Quantity Unit CostReport Preparation 160 Hrs/year 30.89$ $/hr 4,942$
Contamination Analyisis 4 per year 3,000.00$ $/Quarter 12,000$
Total 10 years 101,653$
Task 5: Chloroform System Abandonment
AssumptionsPumps and well head enclosures will be loaded on a flat bed truck by hand. Abandonment will be performed by the Environmental Technician at $30.890 per hourWells will be abandoned in accordance with State of Utah Administrative Code R655-4 subsection 14.9
Flatbed truck with operator costs $55/hr.
Assumed 1 hour of labor to remove each pump and enclosure.
The materials will be discarded in the active trash area of the tailing cells if available or in an off-site landfill.Well casing will be cut off 2 feet below the ground level. The well will be abandoned by filling will Hole Plug. Hole Plug Material cost estimated at $2 per foot of well.
Average well depth of 120 feet.
There is 2,600 feet of underground electrical line and 3,850' of pipeline
The HDPE pipeline and power line will be uncovered with a 365 Excavator
The 365 Excavator is estimated to excavate or backfill 412 feet per hour.The 365 Excavator costs $155/hr without the operator.The Excavator will also backfill the trench after the pipe has been removed. Assumed 8 hours to place the pipeline and powerlines in the tailing cell.
Item Quantity Units Labor Hrs
Equipment
Hours Total Cost
Pull pumps and remove enclosures 13 Pumping Wells 13 13 1,116.56$ Abandon All Wells - Labor 38 Wells 38 0 1,173.78$
Abandon All Wells - Materials 38 Wells 0 0 9,120.00$
Landfil Charges 1 Surcharge 0 0 5,000.00$
Excavate and Backfill Pipeline Trench 12900 Linear Feet 39.34 31.34 5,510.09$ Total 21,920.43$
8/5/2016 - 11:03 AM-WMM Rec Plan Est August 2016 Rev 5.1 Estimate Revision 5.1.1 Energy Fuels Resources (USA) Inc.
White Mesa Mill
Labor Costs
LABOR COSTS
Specified Wages
Energy Fuels and WMI Rates 2014 Estimated Labor Rates**15.65% 7.00% 15.05% 2015 2016
Labor Rates increased by 3% and 2.5% in 2015 and 2016 respectivly.103%102.5%
Labor Classification Base Rate *** Mandated Fringe
Labor Burden
(FICA, SUI,
FUI, etc.
Company
Benefits
(medical, life
insure, etc)Fringe Costs Labor Cost/HR
Fringe Costs -
on Overtime
hours
Labor Cost/HR -
Overtime
Labor
Cost/HR - 50
hour week
% of employee pay
Boiler Makers $26.63 $18.76 $4.17 no added cost $22.93 $49.55 $22.33 $73.43 $54.33 Payroll Taxes 7.65
WC 7.4
Millwrights $21.98 $4.28 $3.44 no added cost $7.72 $29.70 $7.12 $43.65 $32.49 UI 0.60
Ironworkers $23.06 $9.92 $3.61 no added cost $13.53 $36.59 $12.93 $53.98 $40.06 15.65
Carpenters $15.57 $3.03 $2.44 no added cost $5.47 $21.04 $4.87 $30.66 $22.96
Cement Masons $14.78 $0.56 $2.31 $0.47 $3.35 $18.13 $2.75 $26.29 $19.76
Electricians $15.33 $2.71 $2.40 no added cost $5.11 $20.44 $4.51 $29.76 $22.30
Ironworkers - Reinforcing $21.76 $3.41 $1.52 $4.93 $26.69 $4.33 $39.13 $29.18
Laborers (including pipe layers) $13.99 $0.00 $2.19 $0.98 $3.17 $17.16 $2.57 $24.84 $18.69
Pipefitters $21.47 $3.36 $1.50 $4.86 $26.34 $4.26 $38.61 $28.79
POWER EQUIPMENT OPERATORS
Backhoes $17.37 $2.72 $1.22 $3.93 $21.30 $3.33 $31.05 $23.25
Cranes $23.13 $3.62 $1.62 $5.24 $28.37 $4.64 $41.66 $31.03
Dozers $19.40 $3.04 $1.36 $4.40 $23.80 $3.80 $34.80 $26.00
Graders $21.46 $3.36 $1.50 $4.86 $26.32 $4.26 $38.59 $28.78
Loaders $19.40 $3.04 $1.36 $4.40 $23.80 $3.80 $34.80 $26.00
Scrapers $21.46 $3.36 $1.50 $4.86 $26.32 $4.26 $38.59 $28.78
Trackhoes $21.46 $3.36 $1.50 $4.86 $26.32 $4.26 $38.59 $28.78
Tractors $17.37 $2.72 $1.22 $3.93 $21.30 $3.33 $31.05 $23.25
Truck Drivers $17.37 $2.72 $1.22 $3.93 $21.30 $3.33 $31.05 $23.25
Note: base rates do not include FICA, worker comp, unemployment, or company benefits which increase the cost per hour
State of Utah - General Decision - Current Update UT130043, attached, 5 pages, 02/27/2014. ( For comparison only, not used)
8/5/2016 - 11:04 AM - WMM Rec Plan Est August 2016 Rev 5.1 Estimate Revision 5.1.1 Energy Fuels Resources (USA) Inc.
White Mesa Mill
LABOR COSTS
Nonspecified Wages Base Rate*** Mandated Fringe
Labor Burden
(FICA, SUI,
FUI, etc.
Company
Benefits
(medical, life
insure, etc)Fringe Costs Labor Cost/HR
Fringe Costs -
on Overtime
hours
Labor Cost/HR -
Overtime
Labor Cost/HR - 50
hour week
Survey Crew Member $12.45 $0.00 $1.95 $0.87 $2.82 $15.27 $2.22 $22.01 $16.62
Sample Crew Member $12.45 $0.00 $1.95 $0.87 $2.82 $15.27 $2.22 $22.01 $16.62
Mechanic (Demolition) $12.94 $0.00 $2.02 $0.91 $2.93 $15.87 $2.33 $22.90 $17.27
Manager/Engineer $45.55 $0.00 $7.13 $3.19 $10.32 $55.87 $9.72 $82.90 $61.27
Radiation Safety Officer $35.59 $0.00 $5.57 $2.49 $8.06 $43.65 $7.46 $64.58 $47.84
Secretary $14.39 $0.00 $2.25 $1.01 $3.26 $17.65 $2.66 $25.58 $19.24
Clerk $11.84 $0.00 $1.85 $0.83 $2.68 $14.53 $2.08 $20.89 $15.80
Engineer $35.59 $0.00 $5.57 $2.49 $8.06 $43.65 $7.46 $64.58 $47.84
Environmental Technician $20.04 $0.00 $3.14 $1.40 $4.54 $24.58 $3.94 $35.97 $26.86
Safety Engineer $20.04 $0.00 $3.14 $1.40 $4.54 $24.58 $3.94 $35.97 $26.86
Maintenance Foreman $26.12 $0.00 $4.09 $1.83 $5.92 $32.03 $5.32 $47.15 $35.05
Security Personnel $7.71 $0.00 $1.21 $0.54 $1.75 $9.46 $1.15 $13.29 $10.23
Chemist $20.95 $0.00 $3.28 $1.47 $4.75 $25.70 $4.15 $37.65 $28.09
** Labor rates based on the 2014 White Mesa Mill Operating Budget.
*** Reflects 0.0% cost of living raise for 2014
8/5/2016 - 11:04 AM - WMM Rec Plan Est August 2016 Rev 5.1 Estimate Revision 5.1.1 Energy Fuels Resources (USA) Inc.
White Mesa Mill
Equipment Costs
EQUIPMENT COSTS
WHITE MESA MILL RECLAMATION COSTHOURLY EQUIPMENT COSTS 2016 DOLLARS
Actual equipment rates quoted from North Central Rental & Leasing, LLC, 12 month rental periodJanuary 19, 2016
RATE MTCE FUEL FUEL @ Tires and GET TOTAL Mob/Demob Mob/Demob Operating Hrs Replacement CostUnitsMONTHLY HOURLY Excess Hours 50 Hour Weeks EXPENDABLES USAGE $1.81 COST per machine Totals per Month637G Scraper 4 31,700 180.11 91.00 162.29 11.75 23.5 42.62 5.25 $221.91 $35,900 $143,600 880 1,940,000$
D8T Dozer 1 15,800 89.77 46.00 81.02 6.35 8.5 15.42 1.05 $103.84 $23,850 $23,850 220 650,000$ D7E Dozer 1 13,350 75.85 39.00 68.48 5.85 7.0 12.70 1.05 $88.08 $21,100 $21,100 220 550,000$ 825H Compactor 1 14,050 79.83 41.00 72.06 5.85 13.0 23.58 0.50 $101.99 $22,050 $22,050 220 250,000$
980 H/K Loader 1 14,150 80.40 41.00 72.52 6.30 9.0 16.32 5.25 $100.39 $21,700 $21,700 220 300,000$ 988 H Loader 1 21,800 123.86 62.00 111.49 8.15 11.0 19.95 5.25 $144.84 $26,200 $26,200 220 345,000$ 770 Haul Truck 4 14,350 81.53 41.00 73.43 9.25 8.5 15.42 4.10 $102.19 $22,500 $90,000 880 2,000,000$
365CL Excavator 1 20,650 117.33 59.00 105.66 9.40 13.0 23.58 1.05 $139.69 $40,500 $40,500 220 425,000$ 651 Water Wagon 1 14,700 83.52 42.00 75.22 7.75 17.0 30.83 2.10 $115.90 $24,800 $24,800 220 250,000$ 5000 gal Water Truck 1 8,350 47.44 25.00 42.95 4.55 10.0 18.14 2.10 $67.74 $10,950 $10,950 220 175,000$
14H/Ripper Motor Grader 1 11,050 62.78 32.00 56.63 5.30 5.5 9.98 5.25 $77.15 $17,200 $17,200 220 265,000$
$441,950 3,740
Equipment Rental Rate Quoted by WorldWide Rental Services (02/26/2013) for PC 300 Excavator with ShearRental Rates increased by 2013, 2014 and 2015 CPI-u Rate of 1.50%, 0.80% and 0.50% respectively Mob/DemobPC 300 w/ Shear 25,705.89 146.06 59.00 128.64 18.82 12.5 22.67 $170.14 $4,884 450,000$
Small tools allocation - Demolition - $1.35/mechanic labor hour for oxygen/acetylene, expendables $1.35
Monthly Maintenance Flat Rate
Butler Maintained Equipment Planned Operating Hours/month
Planned Operating hours/month (other equipment
Total Operating hours per month Fuel Usage per day, gal,
Fuel Cost per month, 21 days
Maintenance Cost per Operating Hour Mob/DemobButler Equipment Maintenance Cost $83,600 3,740 570 4,310 10 380.89$ $22.45 100,200$
RATE MTCE FUEL FUEL @ TOTALCrane Rental Rates MONTHLY HOURLY EXPENDABLES USAGE $1.81 COST Mob/Demob60 ton Hydraulic Crane 11,002 62.51 2.18 15.0 27.21 $91.90 2,500$ 250,000$ 30 ton Hydraulic Crane 6,684 37.97 2.18 10.0 18.14 $58.29 900$ 175,000$
Rental Rates updated from Honnen Equipment, 02/26/2013 2013 Crane Monthly Rental RatesRental Rates increased by 2013, 2014 and 2015 CPI-u Rate of 1.50%, 0.80% and 0.5% respectively 60 ton $10,70030 ton $6,500Power Motive - Screen deck and conveyors, Replacement Cost 200,000$
8,225,000$
82,250$
8/5/2016 - 11:04 AM - WMM Rec Plan Est August 2016 Rev 5.1 Estimate Revision 5.1.1 Energy Fuels Resources (USA) Inc.White Mesa Mill
Fuel
Bureau of Labor Statistics
Series Id:
Group:
Item:
Base Date:
Years:
Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2005 141.1 149.5 173.3 175.4 170.8 187.2 189.8 200.6 212.6 264.1 206.2 198.5
2006 197.1 196.2 206.5 230.4 239.6 246.9 237.5 250.2 201.3 197.5 197.2 203.0
2007 180.9 193.5 220.2 238.0 226.5 227.6 243.5 231.2 246.2 249.6 296.7 271.9
2008 278.2 287.5 353.7 365.1 398.2 421.0 431.9 346.7 342.3 281.8 224.1 168.0
2009 161.6 147.2 139.2 167.4 166.4 191.1 172.8 204.1 193.2 202.8 215.7 205.1
2010 229.4 206.9 225.5 240.0 235.8 221.8 218.5 231.1 227.7 243.7 255.3 259.2
2011 270.0 289.3 321.8 339.8 328.4 333.7 327.8 307.3 317.8 310.6 337.1 311.0
2012 322.0 329.2 344.3 339.4 325.8 295.4 298.7 324.1 342.4 351.0 323.8 317.4
2013 318.9 342.4 321.0 318.3 307.7 304.8 311.6 319.3 328.0 318.4 307.0 314.7
2014 308.5 322.0 318.1 318.7 316.5 308.8 307.8 306.9 302.3 283.4 272.3 229.9
2015 182.6 191.5 193.1 183.8 202.6 198.7 194.0 189.2 168.6 174.4 168.3 129.7
12 month Average 181.4
No. 2 diesel fuel
198200
2005 to 2015
Producer Price Index-Commodities
Original Data Value
WPU057303
Not Seasonally Adjusted
Fuels and related products and power
Source: Bureau of Labor Statistics Generated on: January 18, 2016 (04:04:52 PM)
Equipment Productivity
Equipment Productivity
Dozer (D-8) Productivity Determination - 100' Push Distance
Work Efficiency, %: 0.83 Assumes 50 minutes/hour
Average Dozing Distance, FT: 100
Ideal Dozer Productivity LCY/HR 825 CAT Handbook
Adjusted Dozer Productivity LCY/HR 685
Wheel Loader (988) Productivity Determination loading 3 @ 30 C.Y. Trucks
Work Efficiency, %: 0.83 Assumes 50 minutes/hour
Bucket Capacity (C.Y)10.0
Load Time, 3 loads / truck (min)1.65
Ideal Loader Productivity LCY/HR 1091
Adjusted Loader Productivity LCY/HR 905
Haul Truck (770) Productivity Determination - 3,310' haul (Haul Route M)
Work Efficiency, %: 0.83 Assumes 50 minutes/hour
Average Distance, FT: 3,310 Haul Route M
Average Travel Speed 20 Miles per Hour
Truck Capacity (C.Y)30.00
Load Time (min)1.65
Haul Time (min)3.76
Dump Time (min)1.00
Cycle Time (min)5.25
Ideal Truck Productivity LCY/HR 343
Adjusted Truck Productivity LCY/HR 285
Equipment Productivity
Hydraulic Excavator (365) Productivity Determination loading 3 @ 30 C.Y. Trucks
Work Efficiency, %: 0.83 Assumes 50 minutes/hour
Bucket Capacity (C.Y)6.0 Mass Excavation Boom, pg. 18
Time per Pass (min)0.35 Cat Handbook, V 42 pg. 4-204
Load Time, 5 passes / truck (min)1.75
Truck Capacity (CY)30.0
Ideal Loading Productivity LCY/HR 1029
Adjusted Loading Productivity LCY/HR 854
Hydraulic Excavator (365) Productivity Determination Digging a Trench
Work Efficiency, %: 0.83 Assumes 50 minutes/hour
Bucket Capacity (C.Y)6.0 Mass Excavation Boom, pg. 18
Time per Pass (min)0.35 Cat Handbook, V 42 pg. 4-204
CY per Linear Foot of Trench 1 7 ft wide 4 ft deep
Ideal Excavating Productivity CY/HR 1029
Efficency in uncovering pipe 50%
Linear feet per hour 412
Haul Truck (770) Productivity Determination - 3120' haul (Haul Route E)
Work Efficiency, %: 0.83 Assumes 50 minutes/hour
Average Distance, FT: 3,120 Haul Route E
Average Travel Speed 20 Miles per Hour
Truck Capacity (C.Y)30.00
Load Time (min)1.75
Haul Time (min)3.55
Dump Time (min)1.00
Cycle Time (min)6.30
Ideal Truck Productivity LCY/HR 286
Adjusted Truck Productivity LCY/HR 237
Haul Truck (770) Productivity Determination - 2680' haul (Haul Route C)
Work Efficiency, %: 0.83 Assumes 50 minutes/hour
Average Distance, FT: 2,680 Haul Route C
Average Travel Speed 20 Miles per Hour
Truck Capacity (C.Y)30.00
Load Time (min)1.75
Haul Time (min)3.05
Dump Time (min)1.00
Cycle Time (min)5.80
Ideal Truck Productivity LCY/HR 311
Adjusted Truck Productivity LCY/HR 258
Equipment Productivity
Haul Truck (770) Productivity Determination - 2,470' haul (Haul Route D)
Work Efficiency, %: 0.83 Assumes 50 minutes/hour
Average Distance, FT: 2,470 Haul Route D
Average Travel Speed 20 Miles per Hour
Truck Capacity (C.Y)30.00
Load Time (min)1.00
Haul Time (min)2.81
Dump Time (min)1.00
Cycle Time (min)4.81
Ideal Truck Productivity LCY/HR 374
Adjusted Truck Productivity LCY/HR 311
Haul Truck (770) Productivity Determination - 2,810' haul (Haul Route L)
Work Efficiency, %: 0.83 Assumes 50 minutes/hour
Average Distance, FT: 2,810 Haul Route L
Average Travel Speed 20 Miles per Hour
Truck Capacity (C.Y)30.00
Load Time (min)1.65
Haul Time (min)3.19
Dump Time (min)1.00
Cycle Time (min)5.84
Ideal Truck Productivity LCY/HR 308
Adjusted Truck Productivity LCY/HR 256
Haul Truck (770) Productivity Determination - 3960' haul (Haul Route K)
Work Efficiency, %: 0.83 Assumes 50 minutes/hour
Average Distance, FT: 3,960 Haul Route K
Average Travel Speed 20 Miles per Hour
Truck Capacity (C.Y)30.00
Load Time (min)1.75
Haul Time (min)4.50
Dump Time (min)1.00
Cycle Time (min)7.25
Ideal Truck Productivity LCY/HR 248
Adjusted Truck Productivity LCY/HR 206
Equipment Productivity
Haul Truck (770) Productivity Determination - 2010' haul (Haul Route A)
Work Efficiency, %: 0.83 Assumes 50 minutes/hour
Average Distance, FT: 2,010 Haul Route A
Average Travel Speed 20 Miles per Hour
Truck Capacity (C.Y)30.00
Load Time (min)1.75
Haul Time (min)2.28
Dump Time (min)1.00
Cycle Time (min)5.03
Ideal Truck Productivity LCY/HR 358
Adjusted Truck Productivity LCY/HR 297
Haul Truck (770) Productivity Determination - 2,570' haul (Haul Route B)
Work Efficiency, %: 0.83 Assumes 50 minutes/hour
Average Distance, FT: 2,570 Haul Route B
Average Travel Speed 20 Miles per Hour
Truck Capacity (C.Y)30.00
Load Time (min)1.75
Haul Time (min)2.92
Dump Time (min)1.00
Cycle Time (min)5.67
Ideal Truck Productivity LCY/HR 317
Adjusted Truck Productivity LCY/HR 263
Haul Truck (770) Productivity Determination - 1,150' haul (Haul Route N)
Work Efficiency, %: 0.83 Assumes 50 minutes/hour
Average Distance, FT: 1,150 Haul Route B
Average Travel Speed 20 Miles per Hour
Truck Capacity (C.Y)30.00
Load Time (min)1.75
Haul Time (min)1.31
Dump Time (min)1.00
Cycle Time (min)4.06
Ideal Truck Productivity LCY/HR 444
Adjusted Truck Productivity LCY/HR 368
Haul Truck (770) Productivity Determination - 2,030' haul (Haul Route O)
Work Efficiency, %: 0.83 Assumes 50 minutes/hour
Average Distance, FT: 2,030 Haul Route B
Average Travel Speed 20 Miles per Hour
Truck Capacity (C.Y)30.00
Load Time (min)1.65
Haul Time (min)2.31
Dump Time (min)1.00
Cycle Time (min)4.96
Ideal Truck Productivity LCY/HR 363
Adjusted Truck Productivity LCY/HR 301
Rock Production
ROCK PRODUCTION COST
Assumptions:
Rock is obtained from gravel source north of Blanding, Utah. BLM Public PitRip Rap Rock is processed by screening only, no crushing is required, 1.25 CY of feed for 1 CY of product
Filter material is produced from Rip Rap reject
Rock is produced and stockpiled at the site
Site is 7 road miles from the mill; 6 miles of which is paved public highway
Rock will be hauled in 22 CY bellydump trucks, contract haulers ($100.00/hr)Rock will be dumped in windrows on Tailings Cells by trucks, spread by grader, and spread by D7 Dozer
Trucks can average 30 MPH (1.75 rounds/hr)
Product
Required (CY) Reject Factor
Material Feed
to Plant (CY)
Plant
Throughput
(CY/hr)
Plant
Operating
HoursRip Rap material fed to plant 189,000 25.0% 236,250 122 1,900
Filter material fed to plant 25,500 10.0% 28,050 122 200
214,500 2,100
PRODUCTION OF RIPRAP
Resource Description Units Cost/Unit Task Units Task Cost
Laborer hrs $17.16 2,100 $36,030
Cat D8N Dozer With Ripper hrs $103.84 375 $38,938Cat D8N Dozer Operator hrs $26.00 375 $9,750
Cat 980 Loader hrs $100.39 2,100 $210,823
Cat 980 Loader Operator hrs $26.00 2,100 $54,600Screening Plant w/conveyors* hrs $72.46 2,100 $152,164
BLM Usage Fee CY $0.60 214,500 $128,700Contract Highway Trucks - Bellydumps** hrs $100.50 5,571 $559,929
Equipment Maintenance (Butler) hrs $22.45 2,475 $55,576
Total Production of RipRap $1,246,509
RIPRAP COST PER CUBIC YARD DELIVERED $6.60
* Cost Quoted from Power Motive Corporation, Denver, Colorado updated February 14, 2012
$12,800 (less 10%) for screen and conveyors, 176 hours per month for one month, plus screen set up at $2,500.Mob and Demob - 5,500.00$
Rental costs for screening equipment increased by CPI-U 2012, 2013, 2014 and 2015 of 1.74%, 1.50%, 0.80% and 0.50% respectively.
** Cost quoted from Dennis Cosby, Cosby Trucking, Inc., Blanding, Utah, Updated 3/3/14. Escalated by 2015 CPI of 0.5%.
(includes ownership expense, fuel, maintenance and operator)
8/5/2016 - 11:06 AM - WMM Rec Plan Est August 2016 Rev 5.1 Estimate Revision 5.1.1 Energy Fuels Resources (USA) Inc.
White Mesa Mill
Long Term Care
LONG TERM CARE CALCULATION
March 2016
Base Amount (Starting in Dec. 1978) $250,000
CPI-U December, 1978 67.7
CPI-U November 2015 237.336
Adjusted Long Term Care = $250,000 x (CPI-U most recent / CPI-U Dec., 1978)
Adjusted Long Term Care $876,425
8/5/2016 - 11:07 AM - WMM Rec Plan Est August 2016 Rev 5.1 Estimate Revision 5.1.1 Energy Fuels Resources (USA) Inc.
White Mesa Mill
General Liability & Auto Insurance
General Liability and Auto Insurance
Project Life 7 years
GL Insurance per full year 15,000$
Auto 1,250$
Vehicles Vehicle Ins. GL Insurance
Year 1 5 6,250$ 15,000$
Year 2 10 12,500$ 15,000$
Year 3 10 12,500$ 15,000$
Year 4 10 12,500$ 15,000$
Year 5 10 12,500$ 15,000$
Year 6 10 12,500$ 15,000$
Year 7 3 3,750$ 15,000$
72,500$ 105,000$
Project Cost 177,500$
8/5/2016 WMM Rec Plan Est August 2016 Rev 5.1 Estimate Revision 5.1.1
Mobilization and Management Support
Mobilization and Management Support
Office Facilities
Resource Description Units Cost/Unit Task Units Task Cost
Install New Powerline LS $15,225 1 $15,225
Utilities for Offices months $1,028 36 $37,016
Temporary Office Trailer months $1,542 33 $50,898
Temporary Office Trailer, mob, demob & setup LS $3,085 1 $3,085
Total Office Facilities $106,224
Equipment Mobilization
Resource Description Units Cost/Unit Task Units Task Cost
Butler Machinery Mobilization LS $542,150 1 $542,150
Other Equipment Mobilization LS $4,884 1 $4,884
Cranes LS $3,400 2 $6,800
Total Equipment Mobilization $553,834
MANAGEMENT/SUPPORT
Resource Description Units Cost/Unit Task Units Task Cost
Manager/Engineer hrs $55.87 6,240 $348,614
Legal hrs $450.00 100 $45,000
Radiation Safety Officer hrs $43.65 6,240 $272,384
Secretary hrs $17.65 6,240 $110,162
Clerk hrs $14.53 4,866 $70,682
Environmental Technician (3/4 time, 4.5 years) hrs $24.58 7,300 $179,447
Maintenance Foreman hrs $32.03 6,240 $199,872
Chemist hrs $25.70 2,080 $53,454
Security hrs $9.46 18,720 $177,096
Safety Engineer hrs $24.58 4,160 $102,260
Misc. Materials & Supplies hrs $36.45 6,240 $227,448
Health Physics Costs hrs $64.81 2,080 $134,800
Environmental Monitoring Costs, Laboratory years $71,620.00 7.0 $501,340
Total Management/Support $2,422,560
Total Mobilization and Manaagement Support $3,082,617
* All Office Facilities costs were estimated in 2012 and escalated by CPI 1.5%, 0.8% and 0.5% in
2013,2014 and 2015 respectively.
WMM Rec Plan Est August 2016 Rev 5.1 Estimate Revision 5.1.1
Energy Fuels Resources (USA) Inc.
White Mesa Mill
ATTACHMENT D
RADIATION PROTECTION MANUAL FOR RECLAMATION ACTIVITIES

White Mesa Mill -Standard Operating Procedures
Book 20: Radiation Protection for Reclamation Activities, Section 1
Responsible Authority
Radiation Safety Officer
Date: 08/15 Revision: EFRI-4
Page 1 of 18
The Radiation Safety Officer (RSO) shall meet the requirements as specified in
section 2.4, Technical Qualifications of Health Physics Staff in NRC Regulatory Guide
8.31. Along with meeting the requirements outline in Regulatory Guide 8.31, the RSO
must also be submitted and approved by the State of Utah as an acceptable responsible
authority for reclamation activities.
The RSO will be responsible for following and complying with all rules and
specifications that are outlined in the Reclamation Plan along with all standards
pertaining to the health and safety of the employees and environment. The RSO must
also maintain accurate documentation of all decontamination and disposal activities. The
RSO will have the responsibility of overseeing all aspects of this procedure and all total
releases of any materials from the facility. These records will be maintained on site for
review.
1.0 RADIATION MONITORING -PERSONNEL
This section contains the following procedures for personnel radiation monitoring
including: (1) airborne particulates (2) alpha surveys (3) beta/gamma surveys and (4)
urinalysis surveys.
1.1 AIRBORNE PARTICULATES
Sampling for personnel exposure to airborne particulate radionuclides, other than for
radon progeny, will be done utilizing two distinct sampling protocols: (1) personnel
breathing zone samplers, and (2) ambient air high volume samplers. Specific standard
operating procedures for these two collection methods are described in Section 1.1.2 and
1.1.3 below.
1.1.1 Frequency
For work where there is the potential to cause airborne radiation doses to site personnel,
the frequency and type of air sampling to be conducted is determined from measured air
concentrations:
0.01 DAC -0.1 DAC Quarterly or monthly area air sampling and/or bioassay
measurements
>0.1 DAC Continuous sampling is appropriate if concentrations are
likely to exceed 0.10 DAC averaged over 40 hours or
longer.
White Mesa Mill -Standard Operating Procedures
Book 20: Radiation Protection for Reclamation Activities, Section 1
Date: 08/15 Revision: EFRI-4
Page 2of18
The RSO will determine the exact frequency of area air sampling, breathing zone
sampling and/or bioassay measurements and determine how many workers in a group of
workers performing similar jobs are to be equipped with breathing zone air samplers.
Higher airborne concentrations warrant more frequent use of area air samplers, bioassay
measurements, and breathing zone air samplers. Area air samplers may be used where
documentation exists showing the sample is equivalent to a breathing zone sample.
Breathing zone samples taken within one foot of the worker's head are considered
representative without further documentation. Breathing zone air samplers are preferred
under work conditions of higher airborne concentrations. Table 1.1.1-1 below, from
Regulatory Guide 8.25, provides additional guidance for the RSO in designing and
implementing air sampling programs for specific jobs.
White Mesa Mill -Standard Operating Procedures
Book 20: Radiation Protection for Reclamation Activities, Section 1
Date: 08/15 Revision: EFRI-4
Page 3of18
Table 1.1.1-1
Air Sampling Recommendations Based on Estimated Intakes and Airborne Concentrations
Worker's Estimated Estimated Airborne
Annual Intake as a
Fraction of ALI
< 0.1
> 0.1
Any annual intake
Concentrations as a
Fraction of DAC
<0.01
> 0.01
<0.3
>0.3
> 1
>5
Air Sampling Recommendations
Air sampling is generally not necessary.
However, monthly or quarterly grab samples or
some other measurement may be appropriate to
confirm that airborne levels are indeed low.
Some air sampling is appropriate. Intermittent or
grab samples are appropriate near the lower end
of the range. Continuous sampling is appropriate
if concentrations are likely to exceed 0.1 DAC
averaged over 40 hours or longer.
Monitoring of intake by air sampling or bioassay
is required by 10 CPR 20.1502(b).
A demonstration that the air samples are
representative of the breathing zone is appropriate
if ( 1) intakes of record will be based on air
sampling and (2) concentrations are likely to
exceed 0.3 DAC averaged over 40 hours (i.e.,
intake more than 12 DAC-hours in a week).
Air samples should be analyzed before work
resumes the next day when potential intakes may
exceed 40 DAC-hours in 1 week. When work is
done in shifts, results should be available before
the next shift ends. (Credit may be taken for
protection factors if a respiratory protection
program is in place.)
Continuous air monitoring should be provided if
there is a potential for intakes to exceed 40 DAC-
hours m 1 day. (Credit may be taken for
protection factors if a respiratory protection
program is in place.)
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Book 20: Radiation Protection for Reclamation Activities, Section 1
1.1.2 Breathing Zone Sampling
1.1.2.1 General
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Page 4of18
Breathing zone samplers (SKC pumps and accessory kits, or equivalent) are used to
determine airborne exposure to uranium while individuals are performing specific jobs.
The units consist of a portable low volume pump that attaches to the individuals belt,
tygon tubing and filter holder that is attached to the individual's lapel or shirt collar. The
unit monitors airborne uranium in a person's breathing zone. Pumps must be recharged
after 6 to 8 hours of use.
1.1.2.2 Applicability
Breathing zone samples are required:
• for all calciner activities,
• at least quarterly during routine tasks on representative individuals performing
these tasks,
• when radiation work permits are issued in which airborne concentrations may
exceed 25% of 10 CFR Part 20 limits, or
• at the discretion of the RSO.
1.1.2.3 Procedure
The procedure for collecting a breathing zone sample is as follows:
1. Secure the breathing zone sampler, which has been charged and loaded with a filter
paper from the radiation department.
2. Secure the pump to the worker's belt and the filter holder to the shirt collar or lapel.
Try to secure pump tubing to minimize restriction of motion.
3. Turn pump on (record the time pump was turned on) and continue monitoring until
the work being monitored is completed and the worker no longer is in the exposure
area. Record the time at which the job is complete.
4. Return the pump and accessories to the RSO, who will remove the filter paper for
analysis. Be sure to indicate accurately the total time taken by the work being
monitored.
5. Analysis of filter samples will be performed using a sensitive alpha detector. The
procedure is as follows: (a) count a background sample for ten minutes; (b) divide the
background count by ten to obtain the background count rate in cpm; ( c) Place the
breathing zone sample in the instrument and count the sample again for ten minutes;
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( d) divide the sample count by ten to obtain the count rate in cpm; ( e) subtract the
background count rate from the sample count rate; and, (f) record all data on the
Breathing Zone sampling analysis form (a copy of which is attached).
6. Record the total hours of exposure that are being assigned to the employee on the
Employee Exposure form, which is maintained in personnel folders. Be sure to
consider protection factors permitted by respirator use if the employee was also
wearing respiratory protection during the job.
7. The number of DAC hours assigned is calculated using the following formula:
DAC hours = Measured air concentration x Total hours of exposure
of exposure (DAC)(PF)
where: DAC = Derived Air Concentration (for uranium; 10 CFR Part 20,
Appendix B)
PF = protection factor for respirator use. If no respiratory
protection was used PF =1.
The measured air concentration must be in µCi/cc.
1.1.2.4 Calibration
Prior to use, calibration of the breathing zone samplers will be done using a calibration
method as described in Section 3.2.
1.1.2.5 Equipment -Breathing Zone Sampler
The equipment used for breathing zone samples consists of:
1. Personal sampling pumps
2. Gelman 37 mm Delrin filter holders, or equivalent
3. Gelman 37 mm type A/E glass fiber filters, or equivalent
4. Kurz Model 543 air mass flow meter, or equivalent
1.1.2.6 Data Record
Data maintained on file includes:
1. Time on and off for each sample pump.
2. Sampling location(s).
3. Individual's name, identification number, etc.
4. Date and sample number.
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Book 20: Radiation Protection for Reclamation Activities, Section 1
5. Sample count rate.
1.1.2.7 Calculations
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Page 6of18
The airborne concentration in µCi/cc is equal to the sample count rate minus the
background count rate in cpm divided by the instrument alpha efficiency, the sample flow
rate in cc/minute, the sample time in minutes and a conversion factor converting dpm to
µCi.
The calculation is:
EguationNumber l :
Airborne concentration = ______ _,_(C=. =u=nt=R==at=e"") _____ _
(Time)(eff)(Conversion factor)(Flow Rate)
i.e. uCi = (cpm-Bkg) 1 uCi (J) ( l)
cc ( eff)(2.22x 106dpm)( cc/min)(min)
where: eff = cpm/dpm for counting instruments
cpm = counts/min
dpm = disintegrations/min
Conversion factor 1 µCi = 2.22x 106 dpm
Flow Rate = cc/min
Collection time = min
Once the airborne concentration has been calculated it is possible to calculate personnel
exposure in microcuries (µCi). Personnel exposure is determined for an individual who
is working in an area at a known air concentration (µCi /cc) for a given amount of time
(hours) breathing the area air at an assumed rate. The breathing rate for a standard person
(Handbook of Radiological Health) is 1.20 cubic meters per hour (m3 /hr).
The calculation for personnel exposure is:
Equation Number 2:
Exposure µCi= (µCi /cc)(l.20m3/hr)(hours of exposure)(conversion rate)
Where: µCi /cc = air concentration from Equation 1
1.20 m3/hr =breathing rate for standard man (ICRP)
hours of exposure = hours
conversion factor = 106cc/m3
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Page 7of18
It is also possible to determine the percent or fraction of the Derived Air Concentration
(DAC) for a particular radionuclide using the information obtained from the exposure
calculation and dividing this value by the regulatory limit DAC listed in 10 CFR Part 20.
% DAC = Exposure in µCi I µCi limit 10 CFR Part 20
For the natural uranium (U-Nat) the DAC limits from 10 CFR Part 20 for insoluble Class
Y compounds are as follows:
1.1.2.8
•Weekly
• Quarterly
• Yearly
1.0 x 10-3 µCi/week
1.25 x 10-2 µCi /Qt
5.0 x 10-2 µCi /yr
ALARA/Quality Control
The RSO reviews each monitored result and initiates action if levels exceed 25% of 10
CFR 20 limits. At a minimum, ten percent (10%) of the air samples collected in a given
quarter will be recounted using the same instrument or using a different instrument and
these results will be compared to the original sample results. Deviations exceeding 30%
of the original sample results will be reviewed by the RSO and the samples will be
recounted again until the sample results are determined to be consistent. Additional QA
samples consisting of spiked air samples, duplicate samples and blank samples will be
submitted to the radiation department for counting. This will be based on ten percent
(10%) of the number of samples collected during a quarter. The sample results will be
compared to the spiked values, duplicate values, or blank (background) values of the
prepared sample. Deviations exceeding 30% of the determined spiked, duplicate or blank
value will be recounted. If no resolution of the deviation exceeding 30% is made the QA
samples preparation will be repeated. Periodic reviews by the RSO and the ALARA
audit committee will be made and documented to ensure quality maintenance and
ALARA control.
1.1.3 Airborne High Volume Sampling
Grab air sampling involves passing a representative sample of air through a filter paper
disc via an air pump for the purpose of determining the concentration of uranium in
breathing air at that location. Although the process is only measuring airborne
concentrations at a specific place and at a specific time, the results can often be used to
represent average concentration in a general area. A high volume sample pump will be
used for this purpose. Samples will be analyzed as per standard gross alpha analysis
procedures using a sensitive alpha detector.
1.1.3.1 Frequency and Locations
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The following principles used for the collection of area grab samples must be considered
when collecting a sample in order to obtain a representative air concentration that workers
may be exposed to during their assigned work tasks.
1. The locations selected for sampling should be representative of exposures to
employees working in the area.
2. For special air sampling, the sampling period should represent the conditions during
the entire period of exposure. This may involve sampling during the entire exposure
period.
3. For routine sampling, the sampling period must be sufficient to ensure a minimum
flow rate of 40 liters per minute (lpm) for at least 60 minutes.
4. Sample filters will be analyzed for gross alpha using a sensitive alpha detector.
5. Grab sampling procedures may be supplemented by use of Breathing Zone Samples
for special jobs or non-routine situations.
1.1.3.2 Sampling Equipment
Monitoring equipment will be capable of obtaining an air sample flow rate of at least 40
liters per minute for one hour or longer. Equipment utilized will be and Eberline RAS-1,
or a Scientific Industries Model H25004, or equivalent. Filter media will be of
appropriate micron pore diameter. Equipment is calibrated prior to each usage as per
Section 3.3 of this manual.
1.1.3.3 Sampling Procedure
Steps for collection of area airborne grab samples are as follows :
1. A high volume pump will be used for sample collection.
2. Check sample pump calibration.
3. Locate sampler at designated site. Insert a clean filter, using tweezers, into the filter
holder on the sampler. Do not contaminate the filter. Log start time and conditions at
the site.
4. Collect a sample for a minimum of 60 minutes at a flow rate of 40 lpm.
5. After sampling is completed, carefully remove the filter, using tweezers, from the
filter holder and place it in a clean envelope, or in the plastic casing furnished with
the filter.
White Mesa Mill -Standard Operating Procedures
Book 20: Radiation Protection for Reclamation Activities, Section I
6. Log all sample data on the log sheet.
A. Sample location and number (also on the envelope).
B. Time on, time off and date.
C. Mill operating conditions at the site.
D. Sampler's initials.
7. Analyze for gross alpha
1.1.3.4 Calculations
Perform calculations as described in Section 1.1.2. 7.
1.1.3.5 Records
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Page 9of18
Logs of all samples taken are filed in the RSO's files. Data are used to calculate radiation
exposures as described in Section 4.0.
Whenever grab sampling results indicate that concentrations in work locations exceed
25% of the applicable value in 10 CFR Part 20, Appendix B, time weighted exposures of
employees who have worked at these locations shall be computed. Calculations will
reveal an individual's exposure in DAC hours. This value shall be assigned to the worker
and logged onto the worker's "Employee Exposure to Airborne Radionuclides" form.
This form is in Section 4. Whenever special air sampling programs (as required for
cleanup, maintenance, decontamination incidents, etc.) reveal that an employee has been
exposed to airborne radioactive material, the calculated value shall also be entered on the
individual's exposure form.
1.1.3.6 Quality Assurance
Calibration checks on each air sampler, prior to field use, ensure accurate airflow
volumes. Use of tweezers and new filter storage containers minimizes contamination
potential. Field logging of data during sampling and logging of identifying data on
sampled filter containers minimizes sample transposition. Quality control samples will be
analyzed as described in Section 1.1.2.8
Review of data by the RSO and by the ALARA Audit committee further assures quality
maintenance.
1.2 ALPHA SURVEYS
1.2.1 Restricted Area
The Restricted Area is defined as:
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1. The property area within the chain link fence surrounding the mill property and the
area enclosed to the north and east of the facility by the posted Restricted Area fence.
2. The active tailings and liquid waste disposal areas.
All personnel who enter the Restricted Area will monitor themselves each time they leave
the Restricted Area and at the end of their shift. The Radiation Safety Department will
review the monitoring information. All personnel exiting the Restricted Area must initial
a record of their monitoring activity.
1.2.2 Instrumentation
The instrumentation utilized for personnel alpha scanning is listed in Appendix 1 at the
end of this manual. Personnel alpha survey instruments are located at the exits from the
Restricted Area.
1.2.3 Monitoring Procedures
The monitoring procedure includes the following steps:
1. The alarm rate meter is adjusted within the range of 750 to 1,000 dpm/100 cm2 to
ensure a margrn of 250 dpm/100 cm2 due to the low efficiency of this
instrumentation.
2. An individual monitors himself by slowly passing the detector over their hands,
clothing and shoes, including the shoe bottoms, at a distance from the surface of
approximately 1/.i inch. An area that is suspected of possessing any contamination (i.e.
hands, boots, visible spotting/stain on clothing etc.) should be carefully monitored by
placing the detector directly on the surface and note the measurement.
3. Should an alarm be set off indicating the presence of contamination, the individual
should:
a. Resurvey themselves to verify the contamination.
b. If contamination is present the individual must wash the affected area and
again resurvey themselves to ensure the contamination has been removed.
4. If the decontamination efforts by the individual are not successful, then the Radiation
Safety personnel will be contacted to assess the situation. Further decontamination
may be required.
5. If an individual's clothing cannot be successfully decontaminated, they must obtain
clothing from the warehouse to use and must launder the personal clothing in the
laundry room.
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Book 20: Radiation Protection for Reclamation Activities, Section 1
6. Individual surveys are to be logged and initialed.
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Page 11 of 18
7. Access to and from the Mill's Restricted Area by all Mill workers, contractors and
delivery personnel, other than Radiation, Safety and Environmental Staff, Senior
Laboratory personnel, Mill Management and Mill Supervisory personnel and others as
may be designated by the RSO, will be limited to one or more access points as may be
designated by the RSO from time to time.
8. A Radiation Technician will be positioned at each access point designated by the RSO
under paragraph 7 above during peak transition times, such as during breaks and at
the ends of shifts, to observe that each worker, contractor or delivery person is
performing a proper scan.
1.2.4 Training
All employees will be trained on the proper scanning procedures and techniques.
1.2.5 Records
Log sheets will be collected daily and filed by the Radiation staff. Records will be
retained at the Mill. Contamination incidents will result in a written record, which is
maintained on file.
1.2.6 Limits/ ALARA
Contamination limits for personnel scans are set at 1,000 dpm/100 cm2. Records will be
reviewed by the RSO to maintain levels noted as low as reasonable achievable.
1.2. 7 Quality Assurance
A random check of an individual's scanning technique provides quality assurance of the
monitoring procedures. Daily function checks using calibrated sources assures
instrumentation performance. Periodic review by the RSO and the ALARA audit
committee document and ensure quality control and ALARA maintenance.
1.3 PERSONNEL BETA-GAMMA MONITORING
Site employees working within the Restricted Area will be required to wear a personal
monitoring device (such as a TLD, LUXEL badge or other NVLAP approved device
which has been approved by the RSO and the SERP) during their work period. The
personal monitoring devices are normally issued to each employee quarterly; however,
during pregnancy or if the radiological potential for exposure to an individual is
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Page 12of18
anticipated to be elevated and requires quick assessment the badges may be issued
monthly.
1.3.1 Monitoring Procedures
The monitoring procedures consist of:
1. Personnel issued personal monitoring devices will wear the device on the trunk
(torso) of the body. The personal monitoring device records beta/gamma radiation as
well as other forms of penetrating radiation such as x-rays. A personal monitoring
device is an exposure record of an individual's personal exposure to radiation while
on the job. Therefore, personal monitoring devices are to remain at the Mill and
stored on the assigned dosimeter storage boards. All exposure records obtained by a
personal monitoring device which are not consistent with the exposure rates of work
tasks or work location measurements made throughout the Mill will be evaluated by
the RSO. This evaluation will result in an investigation by the RSO and a written
explanation of the findings. These written records will be maintained at the Mill.
2. Personal monitoring devices will be issued at a minimum quarterly and will be
exchanged by the Radiation Safety Department. Missing or lost badges will be
reported to management.
3. Female employees that become pregnant and continue to work during the course of
their pregnancy will be placed on a monthly personal monitoring device exchange
during this period. NRC Regulation Guide 8.13 provides guidelines to be followed
during pregnancy and is made part of this procedure.
1.3.2 Records
The Radiation Safety Department will maintain all occupational exposure records in the
departmental files:
1. Occupational exposure records are a part of an individual's health record and, as such,
will be considered private information.
2. An individual may examine his/her exposure record upon request.
3. An employee terminating his/her employment with the Company may request a copy
of his/her occupational exposure records.
4. The Radiation Safety Department on the signature of the employee will request prior
occupational exposure records.
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5. Occupational exposure records will be made available to authorized company or
regulatory personnel.
1.3.3 Quality Assurance
Periodic reviews by the RSO and the ALARA audit committee document and ensure
quality control and maintenance of conditions ALARA.
1.4 URINALYSIS SURVEYS
1.4.1 Frequency
Urinalyses will be performed on those employees that are a) exposed to potential airborne
yellowcake or involved in maintenance tasks during which yellowcake dust may be
produced, or b) routinely exposed to airborne uranium dust. Baseline urinalyses will be
performed prior to initial work assignments.
Urine samples are collected on a routine basis from employees as required in Regulatory
Guide 8.22. Samples will be collected from all employees monthly. Bi-weekly samples
will be collected if individual exposures are expected to exceed 25% of the DAC value.
Non-routine urinalyses will usually be performed on employees who have been working
on assignments that require a Radiation Work Permit, and always on any individual that
may have been exposed to airborne uranium or ore dust concentrations that exceed the
25% of the DAC level.
1.4.2 Specimen Collection
Clean, disposable sample cups with lids will be provided to each employee that will be
required to submit a urine specimen. The containers will be picked up at the
administration building before the individual enters the Restricted Area.
The container, filled with specimen, will be returned to the bioassay laboratory prior to
reporting to work. The name of the employee and the date of collection will be indicated
on the specimen cup.
A valid sample must be collected at least 40 hours, but not more than 96 hours, after the
most recent occupancy of the employee's work area (after two days, but not more than
four days off).
The specimen should be collected prior to reporting to the individual's work location. To
prevent contamination, the hands should be carefully washed prior to voiding.
Under unusual circumstances where specimens cannot be collected in this manner, the
worker will shower immediately prior to voiding.
White Mesa Mill -Standard Operating Procedures
Book 20: Radiation Protection for Reclamation Activities, Section 1
1.4.3 Sample Preparation
Equipment required:
• 15 ml disposable centrifuge tubes with lids
• 10 ml pipette
• 1 mL pipette
• 200 µL pipette
• 5 µl pipette
• 10 µl pipette
• Disposable tips for the above pipettes
• 1,000 ppm uranium solution
Date: 08/15 Revision: EFRI-4
Page 14 of 18
• Spiking solution -0.03 or 0.02 g/l of uranium in de-ionized water
After the specimens are received, they will be stored in a refrigerator until they are
prepared for analysis.
Sample preparation will be done in an area decontaminated to less than 25 dpm alpha
(removable) per 100 cm2 prior to preparation of samples. All of the equipment that is
used in sample preparation will be clean and maintained in such condition.
A log will be prepared and the following information will be kept for each urinalysis
pe1formed:
Sample identification number
Name of employee submitting the specimen
Date of sample collection
Date the sample was sent to the laboratory
Date the results were received
Results of the urinalysis in µg/1
Indication of any spike used in µg/1
The centrifuge tubes will be marked with a sample identification number. 10 milliliters
of urine will then be pipetted into the centrifuge tube using the pipette device. Or 1
milliliters of urine will then be pipette into the centrifuge tube using the pipette device
(To prevent contamination, a new tip must be used for each specimen.) After each step of
the procedure, the proper entry must be made in the logbook.
The samples that are to be spiked for quality assurance purposes will then be prepared.
The spikes will be introduced into the sample with 5 µl or 10 µl pipettes. A new tip must
be used with each spike. With the standard spike solution (0.03 g/l of U), a 5 µl spike
will result in a 15 µg/l concentration for the 10 ml sample; the 10 µl spike will give 30
µg/l). The proper entry must be made in the logbook for each sample spiked.
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After preparation has been completed, the QA samples are securely packaged as soon as
practicable and sent to the contract laboratory for analysis.
The samples that are to be analyzed in-house will be placed in the chemistry laboratory's
refrigerator until the analysis can be completed. A copy of the in-house analytical
procedure is described in Section 1.4.7.6. Once the on-site laboratory is no longer
functional, all samples will be submitted to a certified laboratory.
1.4.4 Quality Assurance
To assure reliability and reproducibility of results, at least 25% of the samples that are
submitted for analysis will be used for quality assurance purposes. These samples will
consist of spikes, duplicates, and blanks (samples collected from individuals known to
have no lung or systemic uranium burden).
Spiked samples will be prepared as stated under sample preparation of this procedure.
Duplicates will be identical samples of the same specimen and/or spikes of identical
concentrations.
To assure reliability of the in-house analytical procedure, 10% of the samples will be sent
to a contractor laboratory for analysis. These samples will contain quality assurance
items designed to provide intra-laboratory comparisons.
1.4.5 Analysis
After the samples are collected as outlined in Guide 8.22, they are identified to the lab by
collection date and number. Urinalysis results must be completed and reported to the
Radiation Safety Department within seven days of the sample collection.
1.4.5.1 Equipment List
1. Specimen collection cups with disposable lids (VWR No. 15708-711 or equivalent)
2. Screw cap, disposable, graduated 15 ml centrifuge tubes (Corning No. 25310 or
equivalent)
3. Micro-pipettes 1 each 5, 5 each 10 µL (Oxford Model 7000 or equivalent)
4. Adjustable Finnpipette each 1,000 µL, 200 µL and 5 mL
5. Disposable micro-pipette tips for micro-pipettes (Oxford No. 910A or equivalent)
6. FumeHood
7. Ultrasonic Cleaner
8. PE-SCIEX ELAN DRC II AXIAL FIELD TECHNOLOGY ICP-MS (or equivalent)
9. Polyscience Water Circulator (or equivalent)
10. Perkin-Elmer AS-10 Auto Sampler (or equivalent)
White Mesa Mill -Standard Operating Procedures
Book 20: Radiation Protection for Reclamation Activities, Section 1
11. Thermo Scientific Vortex mixtures (or equivalent)
1.4.5.2 Reagent List
1. 1 % to 2% Nitric Acid
2. Concentrated Nitric Acid
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3. 1,000 µg/ml Uranium Stock Solution, certified vendor prepared
4. Dilutions of the above stock solution, replaced bi-annually. Used for QA/QC.
5. Appropriate Cleaning Solution for Ultrasonic Cleaner
6. 1,000 µg/ml Uranium Stock Solution, purchased from certified vendor to use as
calibration standard at different dilutions
Ensure that all reagents used are within their expiration dates listed on each reagent
package, if applicable.
1.4.5.3 Premise
A portion of urine is diluted with 2% Nitric acid solution, mixed thoroughly and
analyzed.
1.4.5.4 Safety Precautions
1 Follow laboratory guidelines when working with acids.
2. Utilize all appropriate PPE.
1.4.5.5 Sample Preparation Procedure
1. Compare sample numbering with bioassay result sheet to insure order and eliminate
discrepancies.
2. To 15 ml centrifuge tube add 1 mL urine sample, 200 µL internal standard of 1,000
ppb and 2% Nitric acid to make up volume to 10 mL.
3. Maintaining sample order of left to right, front to back, lowest sample number to
highest sample number in the set.
4. Use vortex to mix it thoroughly.
5. Analyze using procedure on the ICP-MS described in section 1.4.5.6.
1.4.5.6 ICP-MS Procedures
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Special considerations: Because of the high salt content of the samples, it is necessary to
clean the skimmer and sampler cones after each use.
1. Turn the argon on at the tank and set the delivery pressure at 80 pounds per square
inch (psi).
2. Turn on the exhaust fan and the water supply to the ICP-MS. The water supply has to
have a delivery pressure of 70 psi. It may be necessary to change the filters on the
water supply in order to achieve sufficient water supply pressure. The ICP-MS will
not operate below this pressure.
3. Turn on the computer, monitor and printer.
4. On the windows desktop, double-click the ELAN icon.
5. Check the condition of the sample introduction system.
6. Check that the sample tubing and drain tubing leading from the peristaltic pump to the
spray chamber are properly set up and in good working condition. It is recommended
to use new tubes every day.
7. Place the capillary tubing into a container of 2% Nitric acid solution.
8. Open the instrument window, and then click the Front Panel Tab.
9. On the front panel tab click vacuum start.
10. When the instrument is ready, click Plasma Start.
11. After the plasma ignites, allow the instrument to warm up for 45 minutes.
12. To begin sample analysis, click the sample tab, build the sample analysis list and click
on analyze sample.
13. After the last sample, aspirate the blank long enough to clean the lines.
14. Allow the pump to run long enough without aqueous uptake to void all lines.
15. Turn the flame off and relax lines off of pump.
16. After 5 to 10 minutes, turn off the water supply, exhaust fan and argon.
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All bioassay samples need to be analyzed three (3) working days from receipt in the
laboratory. Samples are extremely susceptible to contamination. Precautions should be
taken to minimize traffic and fugitive dust while samples are digesting.
1.4.6 Reporting and Corrective Actions
As soon as the analytical results are received, they are entered in the logbook and the
entries are checked for correctness and completeness.
The lab report is returned to the Radiation Safety Department with results reported as
micrograms/liter of uranium. The information must be placed in the individual
employee's exposure file and maintained as directed by the DRC.
The Radiation Safety Department is notified immediately of any sample with a
concentration greater than 35 micrograms/liter of uranium. Corrective actions will be
taken when the urinary uranium concentration falls within the limits listed in Table 1
(attached).
The Radiation Safety Department should compute the error on the control spiked samples
and advise the lab if the results are more than ± 30% of the known values. If any of the
results obtained for the quality assurance control samples are in error by a ± 30%, the
analysis must be repeated.
1.5 IN-VIVO MONITORING
In-vivo body counting for lung burdens of U-natural and U-235 will not be routinely
conducted. Monitoring will be conducted at the discretion of the RSO, samples may be
sent for a follow-up analysis for specific radionuclides in consultation with DUSA
management should potential exposure to an individual warrant.
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Page 1 of20 Book 20: Radiation Protection for Reclamation Activities, Section 2
2.0 RADIATION MONITORING -AREA
2.1 HIGH VOLUME AIRBORNE AREA AIR SAMPLING
Area air sampling involves passing a representative sample of air through a filter paper
disc via an air pump for the purpose of determining the concentration of uranium in
breathing air at that location. Although the process is only measuring airborne
concentrations at a specific place and at a specific time, the results can often be used to
represent average concentration in a general area. A high volume sampler or similar high
volume pump will be used for this purpose. Samples will be analyzed as per standard
gross alpha analysis procedures using a sensitive alpha detector.
2.1.1 Equipment
Monitoring equipment will be capable of obtaining an air sample flow rate of 40 lpm or
greater for one hour or longer. A variety of equipment may be used for area air sampling,
however normally the equipment used is an Eberline RAS-1, Scientific Industries Model
H25004, or equivalent. Equipment is calibrated prior to each usage as per Section 3.6 of
this manual.
2.1.2 Frequency/Locations
Area dust monitoring frequency is monthly for the locations shown in Table 2.1.2-1.
Code
BAl
BA2
BA6
BA7
BA7A
BAS
BA9
BAIO
BAll
BA12
BA12A
BA12B
BA13
BA13A
BA14
BA15
Table 2.1.2-1
Airborne Radiation Sample Locations
Location/Description
Ore Scalehouse
Ore Storage
Sample Plant
SAG Mill Area
SAG Mill Control Room
Leach Tank Area
Washing Circuit CCD Thickness
Solvent Extraction Building/Stripping Section
Solvent Extraction Building/Control Room
Yellowcake Precipitation & West Storage Area
North Yellowcake Dryer Enclosure
South Yellowcake Dryer Enclosure
Yellowcake Drying & Packaging Area
Yellowcake Packaging Enclosure
Packaged Yellowcake Storage Room
Metallurgical Laboratory Sample Preparation Room
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Page 2 of20 Book 20: Radiation Protection for Reclamation Activities, Section 2
Code
BA16
BA17
BA18
BA19
BA20
BA21
BA22
BA22A
BA23
BA24
BA25
BA26
BA27
BA29
BA30
BA31
BA32
BA33A
BA33B
Location/Description
Lunch Room Area (New Training Room)
Change Room
Administrative Building
Warehouse
Maintenance Shop
Boiler
Vanadium Panel
Vanadium Dryer
Filter Belt/Rotary Dryer
Tails
Central Control Room
Shifter's Office
Operator's Lunch Room
Filter Press
Truck Shop
Women's Locker Room
Oxidation
AF South Pad
AF North Pad
Areas BA-10 and BA-12 were soluble uranium exposure areas. These areas were areas
where the uranium compounds that were produced are soluble in lung fluids and are
comparatively quickly eliminated from the body. All the other areas are insoluble
exposure areas. Insoluble uranium areas were areas where the uranium compounds are
not readily soluble in lung fluids and are retained by the body to a higher degree.
Temperature of drying operations has a significant impact on solubility of uranium
compounds. High drying temperatures produce insoluble uranium compounds. Area
uranium dust monitoring, during production periods, is weekly in the designated
yellowcake production areas. Monitoring increases to weekly in other monitored areas
with the observance of levels exceeding 25% of 10 CFR 20 limits and reverts to monthly
upon a continued observance of levels below 25% of 10 CFR 20 limits as determined by
the RSO. The RSO may also perform any additional samplings at his or her discretion.
As areas are decommission and the ability to sample those areas is removed, the RSO will
document this in the files and those areas will be removed from further monitoring.
2.1.3 Sampling Procedures
White Mesa Mill -Standard Operating Procedures
Book 20: Radiation Protection for Reclamation Activities, Section 2
Date: 08/15 Revision: EFRI-4
Page 3 of20
1. A RAS-1 or similar high volume pump shall be used for area grab sampling. Insure
the pump has been recently calibrated within the past month.
2. The locations selected for area air samples should be representative of exposures to
employees working in the area.
3. For routine sampling, the sampling period should be for a minimum collection
duration of 60 minutes at a flow of 40 lpm or greater.
4. Insert a clean filter into the filter holder on the sampler. Note start time of pump and
record unusual mill operating conditions if they exist.
A. Stop sample collection and note time. Normally, an automatic timer is
connected to the sampler and a 1 hour sample collection time is used.
6. Remove the filter from the sampler and place in a clean glassine envelope or the
package supplied by the manufacturer for delivery to the Radiation Department.
7. Count the sample by gross alpha counting techniques and enter the result and
sampling information into the record.
2.1.4 Calculations
Perform calculations as specified in Section 4.0.
2.1.5 Records
Logs of all samples taken are filed in the Radiation Safety Officer's files. Data is utilized
to calculate radiation exposures as specified in Section 4.0.
2.1.6 Quality Assurance
Calibration checks on each air sampler are made at least monthly to ensure accurate
airflow volumes are being collected. Usage of tweezers and new filter storage containers
minimizes contamination potential. Field logging of data during sampling and logging of
identifying data on sampled filter containers minimizes sample transposition. Samples
may periodically be submitted for chemical analysis and a comparison of these results to
the radiometric measurements will be made.
Review of data by the RSO and by the ALARA audit committee further assures quality
maintenance.
2.2 RADON PROGENY
White Mesa Mill -Standard Operating Procedures
Book 20: Radiation Protection for Reclamation Activities, Section 2
2.2.1 Definitions
Working Level:
Date: 08115 Revision: EFRI-4
Page 4 of20
A The exposure to 1.3E + 05 MEV of alpha energy or the potential alpha energy
in one liter of standard air containing 100 pCi each of RaA (Polonium-218), RaB
(Lead-214), RaC (Bismuth-214), and RaC prime (Polonium-214). (Exposure
level, not a dose rate)
Kusnetz Method: Method of radon progeny measurement and calculation based
upon a 10 liter sample and at least 40 minutes decay time before counting.
2.2.2 Equipment
The equipment utilized consists of the following, or appropriate equivalents:
• Po1table personal sampler
• Gelman 25 mm filter holder with end cap, or equivalent
• Gelman Type A/E 25 mm diameter glass fiber filters, or equivalent
• Counter-Scaler-Eberline MS-3 with SPA-1 probe, or equivalent
2.2.3 Frequency/Location
Radon progeny samples are obtained monthly for only those locations occupied by
personnel where exposures may have the potential of exceeding 25% of 10 CFR 20
limits.
2.2.4 Procedures
The procedures to be utilized are as follows :.
1. Assemble filter trains .
2. Ensure pump batteries are fully charged.
3. Calibrate pump (see Section 3.5).
4. Attached filter trains at sample locations; disconnect end plug.
5. Collect sample in the breathing zone of the employee.
6. Collect sample for five minutes at 4.0 lpm.
White Mesa Mill -Standard Operating Procedures Date: 08/15 Revision: EFRI-4
Page 5 of20 Book 20: Radiation Protection for Reclamation Activities, Section 2
7. Log sample site, time started, time stopped, and filter pump number prior to leaving
each site on the field log notebook.
8. Samples are counted between 40 minutes and 90 minutes after collection using
sensitive alpha detector.
9. Check the calibration and function check information to ensure the detector is
calibrated and operating.
10. If the calibration check correlates, proceed with sample analysis.
11. Radon progeny samples are normally counted for three minutes; however any sample
count time may be selected for counting.
12. Run background detector count prior to running sampled filters.
13. After counting, calculate working levels.
Equation:
Where:
(CPM-Bkg)
(a eff) (20 liters) (Time Factor)= WL
CPM -sample count per minute
Bkg -counter-detector background count per minute
a Efficiency -The efficiency of the counting system (See Section
3.2.3.3)
Time Factor -Values determined from Kusnetz method (See
attached Table 2.2.4-1)
WL -Working Levels
White Mesa Mill -Standard Operating Procedures
Book 20: Radiation Protection for Reclamation Activities, Section 2
TABLE 2.2.4-1
Time Factors
Min. Factor Min. Factor
40 150 71 89
41 148 72 87
42 146 73 85
43 144 74 84
44 142 75 83
45 140 76 82
46 138 77 81
47 136 78 78
48 134 79 76
49 132 80 75
50 130 81 74
51 128 82 73
52 126 83 71
53 124 84 69
54 122 85 68
55 120 86 66
56 118 87 65
57 116 88 63
58 114 89 61
59 112 90 60
60 110
61 108
62 106
63 104
64 102
65 100
66 98
67 96
68 94
69 92
70 90
2.2.5 Exposure Calculations
Date: 08/15 Revision: EFRI-4
Page 6 of20
The personnel exposure calculations are a job-weighted average of those areas and
concentrations that an individual is exposed to. The procedure is:
1. Determine areas and durations (hrs.) each individual worked during the period (month
and quarter).
White Mesa Mill -Standard Operating Procedures
Book 20: Radiation Protection for Reclamation Activities, Section 2
Date: 08/15 Revision: EFRI-4
Page 7 of20
2. Determine monitored concentrations (WL) for each area so noted.
3. The multiplication of the hours worked in each area by the area concentration (WL)
noted is added to the result for each area involved in the period.
4. The result is the Working Level Hours exposed (WLH) for the period.
5. The working level hours (WLH) divided by 173 (30 CFR 57.5-40 note); or hours per
month gives the working level months (WLM) exposure. (The limit is 4 working
level months exposure per year.)
6. If calculated per quarter, the working level hours summed for the quarter are divided
by 519 (173 X 3) to obtain the working level quarter exposure.
See Section 4.0 for details on how to perform exposure calculations and maintain the
exposure records.
2.2.6 Records
Data records, which are filed in the Radiation Safety files, include:
1. Sample location
2. Date and time of sample
3. Time on and off of sample pump
4. Counts per minute of sample
5. Elapsed time after sampling
6. Background detector count
7. Appropriate Kusnetz time factor
8. Working level
9. Sampler identification
Employee exposure records include:
1. Month monitored
2. Areas and duration worked
3. Employee identification
4. Concentrations (WL) observed
5. Calculated WLMs
2.2. 7 Quality Assurance
Calibration checks each month assure proper calibration of the counting equipment.
Documented semi-annual calibrations of the counting equipment using certified alpha
calibration and pulse meter sources ensure proper calibration of the equipment over the
White Mesa Mill -Standard Operating Procedures Date: 08/15 Revision: EFRI-4
Page 8 of20 Book 20: Radiation Protection for Reclamation Activities, Section 2
anticipated ranges. The air sampling system has documented calibration prior to each
use, ensuring sampling the appropriate air volumes. Duplicate counts of select data may
be counted to assure instrument precision. Field documentation is maintained for each
sample during monitoring. This methodology provides assurance in data quality.
Review of data by the RSO and the ALARA audit committee further assures quality
maintenance.
2.3 ALPHA SURVEYS
2.3.1 Equipment
Equipment to be utilized in area alpha surveys is shown in Appendix 1. Pre-use function
checks will be performed on all radiation survey equipment as specified in Section
3.1.2.3.2.
2.3.2 Frequency/Locations
Fixed and removable alpha surveys are made at those general locations on the Table
2.3.2-1, "Alpha Area Survey Locations." Surveys are completed weekly in those areas
designated by the RSO as authorized lunchroom/break areas are monitored. Designated
eating areas are listed in Table 2.3.2-2.
As areas are decommission and the ability to sample those areas is removed, the RSO will
document this in the files and those areas will be removed from further monitoring.
Table 2.3.2-1
White Mesa Mill
Alpha Area Survey Locations
Scale House Table
Warehouse Office Desks
Maintenance Office Desks
Change Room Lunch Tables
Maintenance Lunchroom Tables
Mill Office Lunchroom Tables
Metallurgical Laboratory Desks
Chemical Laboratory Desks
Administrative Break Room Counter
Administrative Office Desks
White Mesa Mill -Standard Operating Procedures
Book 20: Radiation Protection for Reclamation Activities, Section 2
Table 2.3.2-2
White Mesa Mill
Designated Eating Area Locations
Date: 08/15 Revision: EFRI-4
Page 9 of20
Maintenance Supervisor Break Room
Main Lunch/Training Room
Administrative Break/Conference Rooms
Administrative Office Desks
2.3.3 Procedures
2.3.3.1 Respirators
Respirators are monitored utilizing a removable alpha smear that is read using alpha
scaler meter such as a Ludlum Model 2200 or other equivalent radiological instruments.
Readings exceeding 100 dpm/100 cm2 result in re-cleaning or discarding of the respirator.
Respirator cleaning and monitoring is a function of the Radiation Safety staff assigned to
this duty. The meter's performance is checked prior to each use period.
2.3.3.2 Fixed Alpha Surveys
Alpha surveys for fixed alpha contamination are performed using a variety of alpha
detecting instruments, as listed in Appendix 1. Each instrument is checked using a
calibrated alpha source for proper function and operation prior to use, as described in
Section 3 .1.2.3 .2.
Adjustments to the surface area being measured must be made to convert from the
particular detector's surface area to the commonly used surface area of 100 cm2.
Therefore when converting a measurement to the commonly used unit of dpm/100 cm2, a
multiplying area factor must be applied to the measurement. For the Ludlum instrument
with a 43-1 detector of 75 cm2 surface, multiply the value by 1.33 (i.e. 100 cm2 divided
by 75 cm2).
The procedures are:
1. Turn the meter on and check the meter battery condition.
2. Check alpha detector mylar surface for pinholes, etc. Replace if necessary and repeat
calibration.
3. As specified in Section 3.1.2.3.2, perform a function calibration check usmg
calibrated alpha source.
4. If check is acceptable, proceed with monitoring.
White Mesa Mill -Standard Operating Procedures
Book 20: Radiation Protection for Reclamation Activities, Section 2
Date: 08/15 Revision: EFRI-4
Page 10 of20
5. At each designated site, monitor designated surfaces, table tops, etc., holding within
14 inch of the surface.
6. Record data, location, cpm/cm2 monitored on data sheet.
7. At the conclusion of the survey, transpose results to the file log, correcting to
dpm/100 cm2, using correction for detector's surface area and cpm/dpm conversion
factor.
2.3.3.3 Removable Alpha Surveys
The Ludlum Model 2200 scaler with 43-17 detector, or a variety of other sensitive alpha
detection instruments such as Model 2929 or equivalent, counts wipe samples collected
during removable alpha surveys. Glass fiber filters, sized to fit the detector sample slot,
are utilized as the wipe medium. A template having a 100 cm2 surface area maybe used
to standardize the surface area wiped.
The procedure is:
1. Perform function check calibration of the scaler/detector. Ensure that this
measurement is within ± 10% of the value obtained from the calibration laboratory.
2. If so proceed with the survey and counting.
3. Obtain clean filters and clean envelopes for filter storage.
4. At a location to be surveyed, remove the filter from the envelope and wipe the surface
covering approximately 100 cm2. This is easily accomplished by making an "S"
shaped smear for approximately 10 inches using normal swipes (approximately 2.5
cm diameter).
5. Record on envelope the date and location of the sample.
6. Upon returning to counting lab, place an unused filter in the counting unit for at least
1 minute and obtain a background count rate.
7. Repeat procedure for each used filter, extracting filter from envelope, immediately
prior to counting, using tweezers and placing in the detector slot with the wiped
surface facing the detector, and count for at least 1 minute.
8. Convert results from cpm/filter to dpm/filter (100 cm2 wiped) after subtracting the
blank background count.
White Mesa Mill -Standard Operating Procedures
Book 20: Radiation Protection for Reclamation Activities, Section 2
9. Record on the alpha survey form the following information:
A. Sample location and conditions
B. Sample date
C. Sampler identification
D. Wipe count dpm/100 cm2
10. Discard the filters and envelopes
2.3.4 Action Limits
2.3.4.1 Respirators
Date: 08/15 Revision: EFRI-4
Page 11 of20
Levels greater than 100 dpm/100 cm2 squared require re-cleaning or discarding of a
respirator.
2.3.4.2 Fixed Alpha Surveys
Levels greater than 1,000 dpm/100 cm2 squared require remedial action by management.
ALARA criterion ensures that the RSO takes action where necessary to maintain levels as
low as reasonably achievable.
2.3.4.3 2.3.4.3 Removable Alpha Surveys
Levels greater than 1,000 dpm/100 cm2 squared require remedial action and
decontamination. ALARA criteria ensure that the RSO takes action where necessary to
maintain levels as low as reasonably achievable.
2.3.5 Records
Records of fixed and removable alpha surveys are maintained in the Radiation Safety
office files. Records include:
1. Sample location/conditions
2. Sample date
3. Sampler identification
4. Fixed alpha determination -dpm/100 cm2
5. Removable alpha determination -dpm/100 cm2
6. Remedial action taken, where necessary
2.3.6 Quality Assurance
Calibration function checks of detector performance and visual observation of detector
surfaces prior to each survey ensures counting reliability and consistency. Usage of clean
White Mesa Mill -Standard Operating Procedures
Book 20: Radiation Protection for Reclamation Activities, Section 2
Date: 08/15 Revision: EFRI-4
Page 12 of20
containers and tweezers minimizes contamination of wipe samples. A Field log of
sample I.D.'s on sample containers minimizes transposition of samples. Data review by
the RSO and by the Audit Committee further assures quality maintenance.
2.4 BETA-GAMMA SURVEYS
2.4.1 Equipment
Beta/Gamma surveying instruments used for beta-gamma surveys are listed in Appendix
1 and the sources used are listed in Appendix 2.
Some instruments read directly in mrem/hour while others read in cpm (with a conversion
to mrem/hour). The model 44-6 detector has a removable beta shield allowing
discrimination between beta and gamma contributions. Each instrument has a
manufactures user's manual which describes the function, use and capability of each
instrument. These manuals must be understood before surveying proceeds. Calibration
of Beta/Gamma and functional checks are performed using calibrated Cs-137 or SrY 90
sources
2.4.2 Frequency/Locations
The sites noted on Table 2.4.2-1 may be monitored on a monthly basis by of the
Radiation Safety staff. During reclamation periods, only areas routinely occupied by
personnel are monitored as designated by the RSO. As areas are decommission and the
ability to sample those areas is removed, the RSO will document this in the files and
those areas will be removed from further monitoring.
Identification Number
WM-1
WM-2
WM-3
WM-4
WM-5
WM-6
WM-7
WM-8
WM-9
WM-10
WM-11
WM-12
WM-13
Table 2.4.2-1
Beta-gamma Survey Locations
Description of Possible
Source of Area of Exposure
Mill Feed Hopper & Transfer Chute
SAG Mill Intake-Feed Chute
Screens-Area Floor Between Screen
Leach Operator's Desk
Leach Tank Vent #3
Leach Tank #3 -Wall
CCD Thickeners
Pumphouse Tailings Discharge
Oxidant Makeup Room-Sump Pump
Shift Foreman's Office-Work Desk
SX Operator's Area
Precipitation Tanks #1 Tank; Wall
Precipitation Section "Lab Bench"
Di .ta11ce from S0utce jn cm
1
1
1
1
1
1
1
1
1
1
1
1
1
White Mesa Mill -Standard Operating Procedures
Book 20: Radiation Protection for Reclamation Activities, Section 2
Identification Number
WM-14
WM-15
WM-16
WM-17
WM-18
WM-19
WM-20
WM-21
WM-22
WM-23
WM-24
WM-25
WM-26
WM-27
WM-28
WM-29
WM-30
WM-31
WM-32
WM-33
WM-34
WM-35
WM-36
WM-37
2.4.3 Procedures
Description of Possible
Source of Area of Exposure
Precipitation Vent
Yellowcake Thickener #1; Wall
Centrifuge Discharge-Chute Wall
Yellowcake Thickener #2; Wall
Yellowcake Packaging Room
Yellowcake Dryer
Yellowcake Dust Collector
SX Uranium Mixer #1 Extractor
SX Uranium Mixer #1 Stripping
SX Vanadium Mixer #1 Stripping
Vanadium Dryer
Mill Laboratory Fume Hood
Chemical Laboratory Work Area
Metallurgical Laboratory Work Area
Lunchroom Eating Area
Lunchroom Wash Area
Maintenance Shop -Work Area
Maintenance Shop -Rubber Coating
Tailings Impoundment Discharge
Tailings Impoundment Dike 1
Tailings Impoundment Dike 2
Tailings Impoundment Dike 3
Scalehouse
Tailings Impoundment Dike 4
The monitoring procedures are:
1. Check meter battery condition.
2. Check detector using a check source.
Date: 08/15 Revision: EFRI-4
Page 13 of20
Dj taoce Crom Somce in cm
1
1
1
1
1
I
I
1
1
1
1
1
1
1
1
1
1
1
1
1
1
I
I
I
3. If the calibration function check indicates that the instrument is operating within
calibration specifications, proceed with monitoring.
4. Survey each designated location on Table 2.4.2-1 and record in the field log:
A. Site location/condition
B. Date
C. Instrument used
D. Sampler's initials
E. Meter reading (beta+ gamma)
F. Meter reading (gamma)
White Mesa Mill -Standard Operating Procedures
Book 20: Radiation Protection for Reclamation Activities, Section 2
Date: 08/15 Revision: EFRI-4
Page 14 of20
5. Upon returning to the office, record the rnrem/hr reading into a permanent file which
is maintained for beta-gamma exposure evaluation.
2.4.4 Action Levels
The ALARA concept is utilized in action levels. Responses include operative cleaning of
the area or isolation of the source. The Radiation Safety Department will ensure levels
ALARA.
2.4.5 Records
Records maint";ined in the Radiation Safety office files include:
1. Date monitored
2. Site location/condition
3. Instrument used
4. Sampler's initials
5. Beta/Gamma level, rnrem/hr
6. Remedial action taken, if necessary
2.4.6 Quality Assurance
Quality of data is maintained with routine calibration and individual function checks of
meter performance. Personnel utilizing equipment are trained in its usage. Records of
the operational checks and calibrations are maintained in the files. The RSO routinely
reviews the data and the ALARA audit committee periodically analyzes the performance
of the management of the monitoring and administrative programs.
2.5 EXTERNAL GAMMA MONITORING
External gamma area monitoring is conducted at various locations around the Mill site in
order to provide Radiation Safety Staff with area-specific gamma measurements. The
procedures applicable to such monitoring are set out in Section 4.3 of the Mill's
Environmental Protection Manual.
2.5.1 Locations and Frequency of Monitoring
External gamma measurements are taken over a quarterly interval for the twelve months
of the year at all BHV locations and selected areas around the mill site (see Attachment
#1 for those locations).
2.5.2 Quality Assurance
White Mesa Mill -Standard Operating Procedures
Book 20: Radiation Protection for Reclamation Activities, Section 2
Quality assurance for external gamma measurements consists of:
Date: 08/15 Revision: EFRI-4
Page 15 of20
2.5.2.1.1 Monitoring the container locations to ensure the TLDs have not
been lost;
2.5.2.1.2 Ensuring that all containers are present when receiving or
shipping to Landauer; and
2.5.2.1.3 Reviewing Landauer data for consistency and data
transportation.
2.5.3 Analytical Requirements
Values reported are in millirems per week average for the monitor period (supplied by
Landauer) along with a counting error term. The counting error term is calculated by:
[(sample 2 sigma) -(control rnrern/week)] I (#weeks)
2.5.4 STANDARD OPERATING PROCEDURES
2.5.4.1 Equipment
External gamma is monitored at the ambient air sampling sites and other selected areas
around the mill site, using the OSL badges from Landauer, Inc., or the equivalent.
2.5.4.2 Monitoring Methodology
2.5.4.2.1 The containers, each containing five TLD chips, are mounted
approximately one meter above ground plane at each site with
one container per site.
2.5.4.2.2 The containers loaded with TLDs are received the first of each
quarter from Landauer and exchanged with those in the field.
2.5.4.2.3 A background TLD is stored in the Administration Vault as a
transportation control.
2.5.4.2.4 The TLDs are returned to Landauer for processing.
2.5.4.3 Record Keeping
Data maintained in record form for external gamma is:
2.5.4.3.1 Sample period;
White Mesa Mill -Standard Operating Procedures
Book 20: Radiation Protection for Reclamation Activities, Section 2
2.5.4.3.2 Sample location; and
External gamma levels for total radiation.
2.6 EQUIPMENT RELEASE SURVEYS
2.6.1 Policy
Date: 08/15 Revision: EFRI-4
Page 16 of20
Materials leaving a Restricted Area going to unrestricted areas for usage must meet
requirements of NRC guidance for "Decontamination of Facilities and Equipment Prior
to Release for Unrestricted Use" (dated April 1993).
All material originating within the restricted area will be considered contaminated until
checked by the Radiation Safety Department. All managers who desire to ship or release
material from the facility will inform the RSO of their desires. The RSO has the authority
to deny release of materials exceeding NRC guidance for "Decontamination of Facilities
and Equipment Prior to Release for Unrestricted Use" (dated April 1993). No equipment
or materials will be released without documented release by the RSO or his designee.
2.6.2 Liinits
The release limits for unrestricted use of equipment and materials is contained in the
NRC guidance listed above in Section 2.6.1 and are summarized as follows:
Limits for Alpha emissions for U-Nat and its daughter products are:
Average
Maximum
Removable
5,000 dpm/100 cm2
15,000 dpm/100 cm2
1,000 dpm/100 cm2
Limits for Beta-gamma emissions (measured at a distance of one centimeter) for
Beta/Gamma emitting radioisotopes are:
Average
Maximum
2.6.3 Equipinent
0.2 mrem/hr or 5,000 dpm/100 cm2
1.0 mrem/hr or 15,000 dpm/100 cm2
Radiological survey instruments are listed in Appendix 1.
2.6.4 Procedures
White Mesa Mill -Standard Operating Procedures
Book 20: Radiation Protection for Reclamation Activities, Section 2
Date: 08/15 Revision: EFRI-4
Page 17 of20
Upon notification that materials are requested for release, the Radiation Safety
Department shall inspect and survey the material. Surveys include fixed and removable
alpha surveys and beta-gamma surveys. See sections 2.3 Alpha Surveys and 2.4 Beta-
Gamma Surveys for a detailed breakdown on the surveying aspects and equipment used
for each survey. An equipment inspection and release form, see attached, is to be
prepared and signed by the RSO or his designee. Any material released from the mill will
be accompanied with the appropriate release form. If contamination exceeds levels found
in NRC guidance "Decontamination of Facilities and Equipment Prior to Release for
Unrestricted Use", (dated April 1993), then decontamination must proceed at the
direction of the RSO. If the material cannot be decontaminated, then it will not be
released.
2.6.5 Records
Documented records for each released item are filed in the Radiation Safety Department
files. These files shall include a completed Release Form, see attached, and a photograph
of the material that is being released.
2.6.6 Quality Assurance
The RSO and the ALARA Audit Committee periodically review the policy and
documented release forms to ensure policy and regulatory compliance.
2. 7 Field Gamma Surveys
The field gamma surveys will be conducted in accordance with the currently approved
Reclamation Plan, Section 6 of the Technical Specifications.
White Mesa Mill -Standard Operating Procedures
Book 20: Radiation Protection for Reclamation Activities, Section 3
3.0 EQUIPMENT/CALIBRATION
Date: 02/15 Revision: EFRI-3
Page 1 of 13
All radiation detection instruments used at the Mill are sent to a qualified independent
laboratory for calibration every six months. If necessary, Radiation Safety Staff can use
the procedures outlined below to verify calibration.
3.1 Counters/Detectors
3.1.1 General
All radiation detectors require determination of detector optimal voltage performance or
plateau operating point. The graph of voltage applied to a detector versus detector
response is referred to as a plateau curve. The plateau curve typically has two rapidly
sloping sections and a stable, flat region. The optimal operating point is typically located
at the beginning of the flat, or flatter, section of the graph. The plateau curve is specific
for a particular detector and its accompanying readout, or measuring meter, and may vary
over time depending upon electronic component condition.
The equipment used to determine detector plateau curves includes:
1. Appropriate radiation sources
2. Electrostatic voltmeter
3. Radiation detecting instrument
4. Graph paper
5. Manufacturer's technical manual
The procedure is:
1. Ensure instrument batteries are fresh or fully charged, if applicable.
2. Turn the instrument on.
3. Adjust the instrument voltage control starting at voltage of 600 using electrostatic
voltmeter to monitor voltage setting.
4. Expose detector to a radiation source applicable to the type of detector and in the
appropriate setting.
5. Record voltage and instrument response for each adjustment of voltage applied;
increments of 50 volts are adequate.
6. Repeat steps 4 and 5 until instrument response rapidly increases versus voltage level.
At this point, the detector is approaching potential differentials across the electrode
that may damage the detector.
White Mesa Mill -Standard Operating Procedures
Book 20: Radiation Protection for Reclamation Activities, Section 3
7. Graph instrument response versus voltage applied.
Date: 02115 Revision: EFRI-3
Page 2of13
8. Set equipment high voltage control to the optimum operating point. Record on graph
voltage selected.
9. Retain graph with calibration records.
3.1.2 Function Checks
Calibration function checks are required prior to use of radiation detection instruments
used at the Mill for the purpose of verifying that the instruments are operating at the same
efficiency as when they were calibrated by the calibration laboratory (i.e., within +/-10%).
Function checks are also used for verifying repeatability, reliability, and comparability of
an instrument's measurements from one period to another. By performing function
checks for extended time periods, or on a larger sample size, these goals are met.
Function checks involve two basic elements:
(1) The calibration laboratory efficiency is compared to the instrument's efficiency on
the date of the function check; and
(2) The function check is verified with a check source having similar isotopic
composition as the one that was used by the calibration laboratory to calibrate the
instrument.
Function checks are made for all types of radiation survey instruments. The basic
principle in performing a function check is measuring the radiation field using a survey
instrument against a known amount of radiation from a calibrated source. These
measurements are made for the specific type of radiation occurring. For example, when
performing a beta/gamma survey, the instrument function check is performed using a
beta/gamma check source, such as a (SrY)-90. When performing an alpha survey, use an
alpha check source, such as Th-230 or Pu-239 for performing the function check.
Function checks are documented on the Calibration Check Forms (see Attachment A for
copies of forms to be used) for each specific instrument. They will be maintained in the
instrument's' calibration and maintenance file.
A number of radiation detection instruments are used at the Mill. An Instrument Users
Manual for each instrument is maintained in the calibration files, together with calibration
documentation. The Users Manuals are to be considered the primary reference for
operating a particular instrument. This Standard Operating Procedure (SOP) is not
intended to replace the Users Manual, but rather to supplement the Manual by providing
steps to be performed for function checks. Before operating an instrument, personnel
should read the Users Manual and become familiar with the instrument's operation,
White Mesa Mill -Standard Operating Procedures
Book 20: Radiation Protection for Reclamation Activities, Section 3
Date: 02/15 Revision: EFRI-3
Page 3of13
capabilities, and special features. Personnel will also receive on the job training on each
instrument.
3.1.3 Alpha Monitors
Alpha particles travel very short distances in the air due to their high ionization ability -
typically ~ to Y2 inch. Due to this limitation, alpha monitoring must be done at a distance
of 1A inch or less between the detector face and the source. Alpha monitoring, to be
consistent, requires ensuring a consistent distance be utilized between the detector face
and the source. Alpha detectors read out in counts per minute (cpm). A correlation
relationship, known as the efficiency factor, between the meter response and the actual
disintegration rate of the source is used to determine actual calibration of the meter.
Radioactivity is measured in curies (Ci), which, by definition, is 3.7 x 1010 disintegrations
per second (dps), or 2.2 X 1012 disintegrations per minute (dpm). Another measurement
unit is the Becquerel, or one dps. Alpha radiation is usually monitored as dpm, per
surface area measured.
Radiation survey equipment used at the Mill for alpha surveys is listed in Appendices 1
and 2.
3.1.3.1 Calibration and Function Check Frequency
The frequency of calibration is specified in individual instrument user manuals and
manufacturer's specifications.
The following frequencies are observed for calibration and function checks of radiation
detection instruments:
Calibration Function
~ Freguency Checks
1. Employee scans 6 months 7 days/week
2. Radon progeny 6 months each use
3. Respirator checks 6 months each use
4. Area fixed scans 6 months Daily or each use
5. Area wipe scans 6 months Daily or each use
3.1.3.2 Function Check Procedures -Alpha Counters and Scaler Instruments
The following steps will be used for function checks for alpha counters and alpha scaler
instruments.
White Mesa Mill -Standard Operating Procedures
Book 20: Radiation Protection for Reclamation Activities, Section 3
Date: 02/15 Revision: EFRI-3
Page 4of13
1. Turn the instrument on and place a calibrated alpha check source in the detector
holder on or the face of the detector.
2. Count the source for 1 minute and record this value in cpm.
3. Repeat step 2 four more times.
4. Average the five readings and divide the average in cpm by the known activity on the
alpha source. This is the efficiency of the instrument and detector.
5. Compare this efficiency with the efficiency obtained from the calibration lab. If the
efficiency comparison is within ±10% deviation the instrument needs is calibrated if
not the instrument needs to be recalibrated.
6. If this efficiency comparison is within ±10% deviation the instrument is in calibration.
7. Proceed with monitoring activities.
3.1.3.4 Calibration Procedures
All radiation detection instruments used at the Mill are sent to a qualified offsite
laboratory every six months for calibration. However, if additional onsite calibration is
required the calibration procedures are:
1. Set the detector high voltage at the prior determined operating point usmg an
electrostatic voltmeter.
2. For counter/scalers (radon progeny/wipes), close the detector, without source present,
obtain a reading for a set time. This is a background reading.
3. Place a calibrated source for the type of radiation being measured in the source holder
and obtain reading.
4. Observe the cpm for both the background and the source.
5. Subtract the cpm value of background from the cpm value of the source to obtain the
net cpm.
6. Divide the net cpm value by the known dpm of the source. This is the percentage
efficiency of the instrument system for this energy source.
7. By dividing 100 by this efficiency, an efficiency factor is obtained.
White Mesa Mill -Standard Operating Procedures
Book 20: Radiation Protection for Reclamation Activities, Section 3
Date: 02/15 Revision: EFRI-3
Page 5 of 13
8. Dpm equals the cpm divided by the efficiency of the instrument detector system:
Note: 1curie=2.22 E + 12 dpm
1 microcurie = 2.22 E + 6 dpm
1 picocurie = 2.22 dpm
3.1.4 Beta-gamma Monitors
Equipment utilized for beta-gamma monitoring is listed in Appendices 1 and 2.
3.1.4.1 Function Check Procedure
The following steps will be used for function checks on beta/gamma instruments:
1. Turn the instrument on and place the calibrated beta/gamma (SrY-90) check source
on the face of the detector.
2. Let the reading stabilize to a constant value.
3. Record this value in cpm.
4. Divide this value by the known activity on the check source. This is the efficiency of
the instrument and detector.
5. Compare this efficiency to the efficiency obtained from the calibration laboratory. If
the efficiency comparison is within ±10% deviation the instrument needs is calibrated
if not the instrument needs to be recalibrated.
6. If this efficiency comparison is within ±10% deviation the instrument is in calibration.
7. Proceed with monitoring activities.
3.1.4.2 Calibration
All beta-gamma survey instruments are sent out every six months for calibration.
Additional calibration, if necessary, may be performed on site using techniques described
in Reg. Guide 8.30, Appendix C -Beta Calibration of Survey Instruments for calibration
performed by a qualified calibration laboratory using the indicated source as listed in
Appendix 2.
3.1.5 Gamma Monitors
Instruments for gamma measurements are listed in Appendix 1.
White Mesa Mill -Standard Operating Procedures
Book 20: Radiation Protection for Reclamation Activities, Section 3
3.1.5.1 Calibration
Date: 02/15 Revision: EFRI-3
Page 6 of 13
Independent calibration service laboratories shall perform calibrations every six months.
Meters are calibrated to Cs-137 or other radioisotopes as suggested by the calibration
laboratory or manufacturer. Most calibration service laboratories calibrate Beta/Gamma
instruments electronically in accordance with their standard calibration procedures.
However, electronic calibration basically consists of the steps described below:
1. Connect survey instrument to be calibrated to the Model 500.
2. Turn both instruments on.
3. Record high voltage reading on Model 500.
4. Set cpm and the range multiplier on the Model 500 to the desired meter deflection.
The model 500 frequency controls consist of the three-digit readout, range selector,
coarse tuning knob, and the fine tuning knob. The three-digit readout is in cpm times
the frequency multiplier.
5. Calibrating survey instruments in cpm:
A. Set Model 500 frequency to value that will provide a % meter deflection on the
survey instrument's highest count scale. Set pulse height/amplitude to twice
instrument input sensitivity.
B. Adjust the range calibration potentiometer on the survey meter to provide correct
reading record.
C. De-code Model 500 frequency to next lower value; then do the same for the
survey instrument.
D. Adjust the range calibration potentiometer for correct reading on survey
instrument. Record readings.
E. Repeat process until all ranges have been calibrated at % meter deflection. Record
readings.
F. Return to highest count scale on survey meter.
G. Set Model 500 for 14 scale deflection readings.
H. Survey instrument should read within ± 10% of Model 500 frequency. Record
readings.
White Mesa Mill -Standard Operating Procedures
Book 20: Radiation Protection for Reclamation Activities, Section 3
Date: 02115 Revision: EFRI-3
Page 7of13
1) If readings are outside of the tolerance, re-calibrate for % meter deflection.
2) Tap instrument meter lightly to check for sticky meter. Meter tolerance is
± 3% from the initial readings to the final reading.
I. Decode Model 500 to next lower scale. Check survey instruments for 14 scale
reading. Record.
6. Record input sensitivity.
A. Select the most sensitive amplitude range 0-5 mv on the Model 500.
B. Observe meter on survey instrument.
C. Increase pulse amplitude, switching to next higher range, if necessary, until the
rate meter indicates a stable reading (i.e., further increase of pulse amplitude does
not cause an increase in meter reading). Now, decrease pulse height until the
survey instrument meter reading drops 15 ± 5%. Record this pulse height as the
instrument sensitivity.
D. If your instrument has a gain or threshold control to set instrument sensitivity, set
pulse height on the Model 500 to desired sensitivity level. Now adjust your
instrument threshold or gain control until the rate meter reading is within 85 ± 5%
of its stable reading value (see step C). Record the pulse height as instrument
sensitivity.
7. Calibrating survey instrument to cps.
A. Set frequency in Model 500. Divide the Model 500 readings by 60 to convert to
counts per second.
B. Repeat calibration steps as in item 5 above.
3.1.5.2 Frequency of Calibration
If electronic calibration is performed using the above method by the Radiation Safety
Department, the Model 500 pulse generator will be sent out for calibration on an annual
basis.
3.2 PERSONNEL AIR SAMPLERS
The calibration procedure for personnel air samplers involves one of three calibration
procedures. Samplers will be calibrated prior to each use by one of the three
White Mesa Mill -Standard Operating Procedures
Book 20: Radiation Protection for Reclamation Activities, Section 3
Date: 02/15 Revision: EFRI-3
Page 8 of 13
methodologies: bubble tube, electronic or mass flow determinations. Air samplers may
be calibrated to standard air conditions.
3.2.1 Bubble Tube Calibration Method
The Bubble Tube Calibration Method is a calibration method and does not require
corrections to or from standard conditions for temperature and pressure. Personal air
samplers are calibrated for the flow rate for the sampling being performed, typically 2-4
lpm.
The equipment utilized is as follows:
1. Burette -1,000 ml capacity, 10 ml divisions
2. Support, iron, rectangular base, with rod
3. Burette clamps - 2
4. Soap solution, dish
5. Tubing, Gelman filter holder, filter media (0.8 micron glass fiber Gelman type A/E)
6. Stopwatch
7. Small screwdriver
8. Sample pump
The procedures utilized are:
1. Assemble a filter train -place a filter in an in-line filter. Attach two lengths of tubing
to each connector of the in-line filter holder.
2. Make sure the Burette is clean. Clamp the 1,000 ml Burette upside down on the ring
stand with the Burette clamps.
3. Attach the pump to be calibrated to one end of the filter train, connect the other end of
the filter train to the small end of the 1,000 ml Burette, as per Figure 1.
4. Check all tubing connections for air tightness.
5. Pour approximately Y2 inch (12 mm) of soap solution into the dish.
6. Start the pump.
7. Raise the dish up under the Burette opening, and then immediately lower the dish.
This should cause a film of soap to form over the Burette opening (i.e., a bubble).
Repeat this procedure until the film (bubble) will travel up the inverted Burette the
length of the graduation marks on the Burette without breaking.
White Mesa Mill -Standard Operating Procedures
Book 20: Radiation Protection for Reclamation Activities, Section 3
Date: 02/15 Revision: EFRI-3
Page 9of13
8. When the film (bubble) has wetted the Burette inside and will travel the entire length
of the graduated area of the Burette, proceed with the actual calibration run.
9. Quickly form three bubbles and start the stopwatch when the middle bubble is at the
bottom graduation line (actually the 1,000 ml mark, but for purposes here, it will be
called the "zero" line).
10. Time the travel of the bubble from the zero line to the top line of the graduated
distance (0 ml). Since the capacity of the Burette is 1,000 ml (1.0 liter), then the
volume of air that is displaced above the bubble (i.e., needed to raise the bubble) is
1.0 liter. Stopping the stopwatch at the top mark is the time elapsed for the pump to
accomplish this. The rate of rise of the bubble through the apparatus is the flow rate
of air being pulled by the pump.
11. Increase or decrease the pump collection rate by adjusting the appropriate screw or
knob designed for this purpose.
12. Set the pump flow collection rate to the desired valued usually between 2 and 4 liters
per minute for low volume collection pumps and between 30 and 80 liters per minute
for high volume collection pumps.
3.2.2 Mass Flow Method
Mass flow meters are manufactured equipment designed to measure air collection flow
rates for a variety of purposes. Mass flow meters may be subject to temperature and
pressure corrections of air movement depending on whether they are
calibrated/manufactured for standard conditions.
Utilizing an air mass flow meter, traceable to NBS, the airflow rate of pumps can be
quickly adjusted to correct standard flow rate conditions. However, the mass flow meter
must be calibrated annually using a primary calibration method.
The equipment consists of the following:
1. Kurz air mass flow model 543 or equivalent
2. Suitable filter head adapter connections
3. Filter heads with filter media
4. Pump to be calibrated
Note: The meter is calibrated directly in standard air conditions -25° C., 29.82" Hg.
The procedures utilized are:
1. Ensure pump batteries are fully charged.
White Mesa Mill -Standard Operating Procedures
Book 20: Radiation Protection for Reclamation Activities, Section 3
2. Ensure flow meter batteries are fully charged.
3. Assemble filter train.
Date: 02/15 Revision: EFRI-3
Page 10 of 13
4. Connect (with a suitable adapter) the Kurz probe onto the filter train. Ensure an
airtight seal with tape, if necessary.
5. Set the meter function switch to the highest range: 40 std liters per minute.
6. Turn the pump on.
7. Select appropriate range on the meter. (Do not allow meter needle to be forcibly
pegged.)
8. Adjust the pump flow rate as necessary to desired flow rate. Allow the meter to
stabilize before adjustment of the pump.
9. Meter reads directly in standard air conditions, correcting for temperature and
barometric pressure.
Pump is now calibrated. Low volume pumps are set 4 lpm.
3.2.3 Electronic Calibration Method
The electronic calibration is the calibration method and does not require corrections to or
from standards conditions for temperature and pressure. Personal air samplers are
calibrated for the flow rate for the sampling being performed typically 2 - 4 lpm. Area
Airborne high volume air samplers should be calibrated to a minimum of 40 lpm.
The equipment utilized is as follows:
1. UltraFlo Primary Gas Flow Calibrator, or equivalent
2. Soap solution
3. Tubing
4. Small screwdriver
5. Sample pump
The procedure proceeds as follows:
1. Remove the two nipples on the back of the UltraFlo Primary Gas Flow Calibrator.
2. Attach the connection tubing from the top nipple to the sample pump.
3. Turn calibrator on.
4. Turn sample pump on.
White Mesa Mill -Standard Operating Procedures
Book 20: Radiation Protection for Reclamation Activities, Section 3
Date: 02/15 Revision: EFRI-3
Page 11of13
5. Press the plunger style button on top of the soap dispensing portion of the device.
6. Write down the digital reading from the calibrator device.
7. Repeat steps 5 and 6 three times.
8. Take an average of the three readings.
9. If the sample pump requires adjustment, take the screwdriver and adjust the set
screw on the face of the sample pump and then repeat steps 5 through 7.
10. After the sample pump is calibrated, document the calibration on the Breathing
Zone/Radon or the High Volume Calibration Sheet depending on which device is
being calibrated, in the Radiation department.
11. Replace nipple caps on the back of the calibrator.
3.3 AREA AIR SAMPLERS
The calibration procedure for area air samplers involves one of the following procedures;
Kurz Mass Flow, Wet Test Gas Meter, Electronic or Bubble Tube Method.
3.3.1 Kurz Mass Flow Method
Repeat procedures discussed in 3.2.2 -except -airflow rate is adjusted to 40 slpm and
samplers utilized are:
1. Eberline RAS-1
2. Scientific Industries Model H25004
3. Equivalent
3.3.2 Wet Test Gas Meter Method
The wet test gas meter method utilizes a Precision Scientific wet test meter rated at one
cubic foot per revolution of the main dial. This method is used to calibrate the Kurz air
mass flow meter in addition to direct calibration of the area air samplers.
The procedures are:
1. Attached coupling to sampler filter assembly; secure it with tape.
2. Connect wet test meter hose to coupling.
3. Check water level of wet test meter. The needle should be on slightly above the water
level.
4. Check the thermometer temperature of the wet test meter. Record this on the
calibration sheet. Assume that the wet and dry bulb temperatures are the same.
White Mesa Mill -Standard Operating Procedures
Book 20: Radiation Protection for Reclamation Activities, Section 3
Date: 02/15 Revision: EFRI-3
Page 12of13
5. Tum on the sampler. Check the west test meter's manometer reading. This reading is
obtained by adding the left and right column values. (A typical reading might be .3).
Log these values for each ball height on the "Static pressure ... H20" column.
6. For the following sampler approximate settings, pull one cubic foot of air through the
wet test meter and record the time (in seconds) for each: 20, 30, 40, and 50 lpm.
Sampler Calibration Procedures -Calculations and Equations
1. To convert the static pressure (of the manometer attached to the wet test meter) from
inches of water to inches of mercury, divide the number of inches to water by 13.6.
Example: 0.4113.6-0.02941176" Hg
2. To compute the actual flow rate ("Q rate act. lpm"), first divide the number of cubic
feet by the number of seconds. Example: 1 ft.3190 sec = .01111 ft.3/awx. Convert
the cubic feet to liters. The conversion factor is 28.317. Example: .01111 ft.3/sec x
28.317 L ft. 3 = .3146 Lisee. Multiply this by 60 to convert from seconds to minutes.
Example: .3146 Lisee x 60 sec= 1888 Lim or 18.88 lpm.
3. Using the "Vapor Pressures of Water" chart, find the vapor pressure inside the wet
test meter by matching the wet bulb temperature with the corresponding vapor
pressure. This number is the vapor pressure at the standard wet bulb (Pvpstw).
4. Find the vapor pressure at dewpoint using this formula: Pv dewpoint = Pvpstw =
0.0003613 (td-tw) Bp (Where +d = dry bulb temp; tw = wet bulb temp; bp =
barometric pressure in inches of mercury.) Assume that the dry bulb temperature
and the wet bulb temperature are the same, so the difference between them will
always be zero. Thus, Pv dewpoint will equal Pvpstw.
5. Determine the actual air density (D act) with this formula:
D act= 1.327
td + 459.67 [(Pg-Sp) -0.378 (Pv dewpoint)]
(Where td -dry bulb temp in degrees F.; Bp = barometric pressure in inches of
mercury; Sp = static pressure of wet test meter in inches of mercury.)
White Mesa Mill -Standard Operating Procedures
Book 20: Radiation Protection for Reclamation Activities, Section 3
Example:
D act= 1.327
70.5 + 459.67
= 1.327
530.17
[(24,8031 -0.02941176) -0.378 (.875)]
(24,773688 -0.33075)
= (0.00250297) (24.442938)
D act= 0.06117996
Log this in "Air Density lbs/ft3" column of log sheet.
Date: 02/15 Revision: EFRI-3
Page 13of13
6. Find the flow rate of the sampler at standard conditions (Q std) using this formula:
Q std= Q act D act
D std
(Where D std= .075 lbs/ft3)
(. Q d = 18 88 (0.06117996) 1.e., st .
0.075
= 18.88 (0.8157328)
= 15.40
Q std= 15.40 (write this down for each position in the Q 0.075 column)
3.3.3 Bubble Tube Method
Refer to Section 3.2.1 to perform this method.
3.3.4 Electronic Calibration
Refer to Section 3.2.3 to perform this method.
White Mesa Mill -Standard Operating Procedures
Book 20: Radiation Protection for Reclamation Activities, Section 4
Date: 02115 Revision: EFRI-3
Page 1 of 11
4. EXPOSURE CALCULATIONS AND RECORD MAINTENANCE
4.1 PERSONNEL EXPOSURE CALCULATIONS
4.1.1 DACs for Conventional Ores
4.1.1.1 Solubility Classes
The solubility class, chemical form and abundance of conventional ores at the Mill, and
the resulting DACs to be used are as set out in the following table:
Table 4.1.1.1-1
Solubility Class, Chemical Form and Abundance of Conventional Ores
Location DAC Unat Th-230 Ra-226 Pb-210
Ore-Grind
6.00E-11 DAC is specified in 10 CFR Part 20
Leach 2.BE-10 % Ore, % Ore, % Ore, % Ore,
% Precipitation % Precipitation % Precipitation % Precipitation
CCD l.2E-1 l Class D Class W 1 Class W 1 Class D 1
Sulfate Sulfate Sulfate Sulfate
25% 25% 25% 25%
sx l.2E-ll Class D Class W 1 Class W 1 Class D r
Sulfate Sulfate Sulfate Sulfate
25 % 25% 25% 25%
Precipitation 5.00E-10 Class D 2
Diuranate NA NA NA
100%
Yellowcake 2.20E-l l Class Y: 90 %
Packaging and Class W: 10
%
Oxide NA NA NA
100%
Tailings l.70E-l 1 Class Y Class Y 2 Class W 1 Class W 1
Oxide Oxide Oxide Oxide
4% 32% 32% 32%
1 10 CFR Part 20, Appendix B
2 NUREG/CR-0530, PNI.r2870, D.R. Kalkwarf, 1979, "Solubility Classifications of Airborne Products from Uranium Ores
and Tailings Piles"
White Mesa Mill -Standard Operating Procedures
SOP PBL-RP-4
Book: Radiation Protection Manual, Section 4
Date: 02/15 Revision: EFRI-3
Page 2of11
4.1.1.2 Application of Conventional Ore DA Cs to Workplace Locations
The Conventional Ore DACs will be applied as follows to the various locations in the
Mill site:
Table 4.1.1.2-1
Application of Conventional Ore DACs to Workplace Locations
Type ofDAC DAC (µCi/ml) Individual Location
Ore/Grind 6.00E-11 Ore Scalehouse
Ore Storage
Maintenance Shop
Warehouse
Lunch Room
Change Room
Administration Bldg
Ore/Grind 6.00E-11 Dump Station
Ore/Grind 6.00E-11 SAG Mill
SAG Mill Control
Shifter's Office
Operations Lunch Room
Filter Press
Leach 2.80E-10 Leach Tank Area
CCD l.20E-11 CCD Circuit Thickeners
sx l.20E-11 SX Building South
Boiler
Ore/Grind 6.00E-11 Control Room
Yellowcake Precipitation 5.00E-10 YC Precipitation &Wet
Storage
Yellowcake Packaging 2.20E-l l North YC Dryer Encl.
South YC Dryer Encl.
YC Pkg Enclosure
YC Drying & Packaging
Area
Packaged YC Staging
Area
Tailings l.70E-l l Truck Shop
Tailings
Yellowcake Precipitation 5.00E-10 Vanadium Circuit
White Mesa Mill -Standard Operating Procedures
SOP PBL-RP-4
Book: Radiation Protection Manual, Section 4
4.1.2 Sampling Time
Date: 02/15 Revision: EFRI-3
Page 3of11
Calculate the sampling time required to detect 10% of the DAC by solving for sampling
time in the following equation:
LLD
(Sampling Time) (Flow Rate = 0.1 DAC
of Sampler)
For example:
To detect 10% of the DAC for U-Nat, a 40 lpm air sampler would have to operate 57
minutes, assuming the sample counter has a lower level of detection of 10 dpm above
background, i.e.:
(10 DPM) ( pCi ) (E-6 µCi)
2.22 DPM pCi =
(X min.) (40 lit) 103m1
mm. lit
X = 56.8 minutes
2E-12 µCi
ml
4.1.3 Dose Calculations (10 CFR 20.1201-20.1202)
1. Analytical results of airborne particulate samples may be obtained in several different
units that need to be converted into mg soluble natural uranium to determine the
weekly exposures and into uCi-hr/ml or WL-hr to determine annual exposures. The
following table presents a summary of the conversions that may be necessary. The
first row of the table presents the operations to be performed in the conversions.
Enter the measured weight or activity, the sampler flow rate, the sampling time, and
the exposure time into the first four columns. Divide the values in column 1 by the
values in column 2 and column 3, and then multiply by the values in columns 4 and 5
to obtain the units in column 6, or:
(Column 1) (Column 4) (Column 5) = Column 6
(Column 2) (Column 3)
White Mesa Mill -Standard Operating Procedures
SOP PBL-RP-4
Date: 02/15 Revision: EFRI-3
Book: Radiation Protection Manual, Section 4
UNIT CONVERSION TABLE
1 2 3 4 5
OPERATION DIVIDE DIVIDE MULTIPLY MULTIPLY
MEASURED SAMPLER SAMPLING EXPOSURE CONSTANT
VALUE FLOW RATE TIME TIME
µg soluble L/min min hrs 1.2
U-Nat
pCi soluble L/min min hrs 1.77
U-Nat
pCi Umin mm hrs E-9
gross alpha
µg Umin min hrs 6.77E-10
U-Nat
µCi ----hrs E7
mL
Radon
For example:
(10 µg Soluble U-Nat) (10 hrs) (1.2) = 2 mg Soluble U-Nat
(2 L/min) (30 min)
See notes for a description of the unit conversions.
Page 4of11
6
ANSWER
ANSWER
mg soluble
U-Nat
mg soluble
U-Nat
µCi-hrs
ML
µCi-hrs
ML
WL-hrs
2. The table on the following page is divided into four quadrants. Different quadrants
are for soluble uranium, insoluble uranium, tailings dust, and radon. Select the proper
quadrant for the type of airborne particulate being sampled. Enter the area, particulate
concentration, and hours of exposure in the labeled columns of the selected quadrant.
3. The protection factors are whole numbers, e.g., 10, 50, 1,000. Divide 1 by the
protection factor and enter the quotient in the fourth column of each quadrant, e.g., for
a protection factor of 1,000, enter 1/1,000 or 0.001 in the column. The 1/PF values
are unit-less.
4. Enter the product of the airborne concentration, the hours of exposure, the time, and
l/PF in the fifth column of each quadrant. Add these values and enter the total at the
bottom of the column.
5. On the dose calculations form which follows, enter the total for Soluble Uranium in
the equation and calculate the corresponding mg. If a value exceeds 10 mg, an over-
exposure may have occurred. If verified by a high uranium in urine results, an over-
exposure has probably occurred and needs to be reported to the NRC.
6. Enter the totals for Soluble Uranium, Insoluble Uranium, Tailings Dust, and Radon in
their respective equations. Perform the indicated calculations, add the fractions
White Mesa Mill -Standard Operating Procedures
SOP PBL-RP-4
Book: Radiation Protection Manual, Section 4
Date: 02/15 Revision: EFRI-3
Page 5of11
together, and record as the subtotal. (Use the DAC for Th-230 or the DAC for
tailings dust to determine the contribution of tailings dust to the subtotal.) If a
subtotal exceeds 1, an over-exposure may have occurred. If verified by a high
uranium in urine result, an over-exposure has probably occurred and needs to be
reported to the NRC.
7. Enter the TLD determinations of whole body dose as the Deep Dose Equivalent on
the form. If the Deep Dose Equivalent exceeds 5 rems, an over-exposure may have
occurred and needs to be reported to the NRC.
8. If the Deep Dose Equivalent exceeds 0.5 rem and the subtotal exceeds 0.1, calculate
the Total Effective Dose Equivalent by adding the Deep Dose Equivalent to the
product of 5 rems times the subtotal and enter on the form. If the total effective dose
equivalent exceeds 5 rems, an over-exposure may have occurred and may have to be
reported to the NRC.
DOSE CALCULATIONS (10 CFR 20.1201+20.1202)
Name Soc. Sec. No. Co. l.D. No. Week Year
AREA I SOL. U HR 1 !!Ci-HR AREA INSOL. U HR 1 !!Ci-HR
µCi/ML PF ML µCi/ML PF ML
TOTAL --- ------TOTAL ------------
AREA TAILINGS HR 1 !!Ci-HR AREA RADON HR 1 WL-HR
DUST PF ML WL PF
µCi/ML
White Mesa Mill -Standard Operating Procedures
SOP PBL-RP-4
Book: Radiation Protection Manual, Section 4
TOTAL ------ ---
Date: 02/15 Revision: EFRI-3
Page 6of11
TOTAL ------ ---
White Mesa Mill -Standard Operating Procedures
SOP PBL-RP-4
Book: Radiation Protection Manual, Section 4
Date: 02/15 Revision: EFRI-3
Page 7of11
DOSE CALCULATIONS (10 CFR 20.1201 + 20.1202)
Name Soc. Sec. No. Co. I.D. No. Week
Weekly Soluble
Uranium
Annual Soluble
Uranium
Annual Insoluble
Uranium
Annual Tailings
Dust
(µCi-hr) (l.77E9)
(mL)
( uCi-hr)
mL
(2000 hr) (5E-10)
( uCi-hr)
mL
(2000 hr) (2E-ll)
uCi-hr)
mL
(2000 hr) ( *)
* = DAC for Th-230 = 6E-12;
or= DAC for tailings dust.
Annual Radon with ( WL-hr)
Daughters Present (2000 hr) (0.33 WL)
=
Limit
=
=
=
=
Subtotal
Limit
Deep Dose Equivalent = TLD Whole Body Dose in rem=
If the Deep Dose Equivalent is > 0.5 rem
and
the Subtotal is> 0.1, then
Limit
Year
______ mg
lOmg
1
______ rem
5 rem
Total Effective
Dose Equivalent
= Deep + Committed Effective
Dose Equivalent Dose Equivalent
= ( rem)+ (5 rem) ( Subtotal) = ______ rem
Limit 5 rem
White Mesa Mill -Standard Operating Procedures
SOP PBL-RP-4
Date: 02/15 Revision: EFRI-3
Book: Radiation Protection Manual, Section 4 Page 8of11
DOSE CALCULATIONS (10 CFR 20.1201 + 20.1202)
Notes:µ
1. PF= Respiratory Protection Factor.
2. The 10 mg soluble uranium per week limit in 10 CFR Part 20.1201 is more
restrictive than the (40 hour) (DAC) limit for natural uranium, thus compliance is
based on 10 mg per week.
3. The conversion of uCi-hr/mL to mg natural uranium is the product of:
4.
(air concentration) (hours of exposure) (breathing rate for light work)
(conversion of minutes to hours) (specific activity of natural uranium)
(conversion of ug to mg) which is:
(uCi-hr) (2E4 mL) (60 min) (_ ug ) (E-3 mg) =
mL min hr 6.77E-7 µCi µg
(uCi-hr) (1.77E9)
mL = mgU-Nat
Thus to obtain mg natural uranium, multiply the µCi-hr/mL by l.77E9.
Soluble Uranium DAC (Class D) =
Insoluble Uranium DAC (Class Y) =
Thorium-230 DAC (Class Y) =
Radon with Daughters DAC =
Tailings Dust DAC is a Site Specific Value =
5E-10 µCi/mL
2E-11 µCi/mL
6E-12 µCi/mL
3E-8 µCi/mL = 0.33 WL
µ5. Description of
unit conversions:
a. ug soluble U-Nat ~ mg soluble U-Nat
( ug ) (E-3 mg) (60 min) (hr exposure) =
(L/min) (min sampler) (E3 mL) µg hr
L
( µg ) (hr exposure) (1.2) mg soluble U-Nat
(L/min) (min sampler)
b. pCi soluble U-Nat ~ mg soluble U-Nat
White Mesa Mill -Standard Operating Procedures
SOP PBL-RP-4
Date: 02/15 Revision: EFRI-3
Book: Radiation Protection Manual, Section 4 Page 9of11
( pCi ) (E-9 mCi) ( mg) (2E4 mL) ~
(L/min) (min sampler) (E3 mL) pCi 6.77E-7 mCi mm
(60 min) (hr exposure)
hr
L
=
( pCi ) (hr exposure) (1.77)
(L/min) (min sampler)
c. pCi gross alpha ~ uCi-hr
mg soluble U-Nat
'( pCj ) (E-6 µCi) (hr exposure) =
(_1_) (min sampler) (E-3 mL) pCi
mm L
( pCi ) (hr exposure) (E-9) =
(_1_) (min sampler)
mm
d. µg U-Nat ~ uCi-hr
mL
µCi-hr
mL
.( ug ) (6.77E-7uCi) (hrexposure) =
(_1_) (min sampler) (E3 mL) µg
mm L
( uCi ) (hr exposure) (6.77E-10)
(_1_) (min sampler)
mm
e. µCi of Radon-222 ~ WL
mL
(uCi) (E6 pCi) (E3 mL) (L-WL) =
mL µCi L E2 pCi
(µCi) (E7) = WL
mL
4.2 Personnel Exposure Files
= uCi-hr
mL
White Mesa Mill -Standard Operating Procedures
SOP PBL-RP-4
Book: Radiation Protection Manual, Section 4
Date: 02/15 Revision: EFRI-3
Page IO of 11
The Company will generate and maintain individual exposure records for each employee
that works at the White Mesa Mill. The record system will be designed to meet the
specifications of the Federal Code of Regulations 10 CFR Part 20.
When an employee is hired, a file will be generated specifically for that individual. All
records that are to be in the radiation exposure file will be maintained during the term of
employment. When the employee terminates, all records will be preserved until the NRC
authorizes their disposition.
Personnel exposure records will be maintained at the mill site and will be accessible only
to the employee and the Radiation Safety staff. No copy of the exposure history will be
furnished to anyone outside of the Radiation Safety Department without a signed consent
form from the employee.
Contents of the exposure file:
Each personnel exposure file will contain the following records:
1. Information Sheet -Each information sheet will include the following information:
A. Employee's full name
B. Birth date
C. Social Security number
D. Date of hire
E. Date of termination
2. Record of Urinalyses - A multiple entry log of all urinalyses conducted at this work
site will include the following information:
A. Employee's full name
B. Sample dates
C. Sample identification number
D. Concentration of uranium in µg/l
E. An entry for any quality assurance "spikes" entered in µg/l
3. Internal personnel Exposure Records -These will be calculated and prepared using
the forms above or by the computer and the printout will be used as the permanent
record in the exposure file. The internal exposure records will contain the following
information:
A. Employee's full name
B. Social Security number
White Mesa Mill -Standard Operating Procedures
SOP PBL-RP-4
Book: Radiation Protection Manual, Section 4
C. Birth date
Date: 02/15 Revision: EFRI-3
Page 11 of 11
D. Exposure to airborne uranium expressed in both µCi and percent MPC
E. Any breathing zone samples collected for airborne uranium to be expressed in
µCi
F. Radon daughters expressed in working levels (WL) and period of exposure
(date)
4. External Exposure Record (OSL, Dosimeter) -The date received from the Dosimeter
contractor will be posted to the Dosimeter record in the exposure file. The following
information will be included on the Dosimeter record:
A. Employee's full name
B. Birth date
C. Social Security number
D. Period of exposure (dates)
E. Exposure in millirems (mrem) for a given period
F. Total accumulated exposure while at the White Mesa Mill
G. Identification number of the Dosimeter badge
5. Record of Exposure from Previous Employment (NRC form 4 or similar) - A record
of occupational exposures that occurred prior to employment at the mill must be
obtained for each employee. If no such exposure record is available, the employee
must sign a statement to that affect. If previous exposure records were kept, a copy
must be secured and placed in the individual's file.
6. Reports of Over-exposure -If an individual has been found to be over-exposed, the
RSO will draft a letter of explanation. The report will explain the circumstances
and/or reasons for the over-exposure. It will also state any actions taken to correct the
problem or to prevent future over-exposures. The report must be placed in the
individual's exposure file.
White Mesa Mill -Standard Operating Procedures Date: 02115 Revision: EFRI-3
Book 20: Radiation Protection for Reclamation Activities, Section 5 Page 1 of 2
5. RADIATION WORK PERMITS
5.1 General
A Radiation Work Permit ("RWP") system has been established for non-routine activities
where there is a potential for a significant radiation exposure, or for certain routine
activities where there is a potential to spread radioactive materials.
Specifically, an RWP is required for:
a) All non-routine maintenance work, or work for which there is no effective
procedure, which may, by the determination of the RSO, exceed 25% of the
R313-15 limits;
b) All routine work, not covered by an procedure, that could involve the spread
of radioactive materials; and
c) The receipt, handling or processing of any alternate feed material or other
radioactive material, which has been determined by the RSO, not to fall within an
existing operating procedure.
An RWP may also be used on a temporary basis for routine activities in lieu of an
procedure, while a procedure is being developed for the activity.
5.2 All Non-Routine Activities Require RSO Review
All non-routine activities require review by the RSO. The RSO will advise the Mill
Manager on a regular basis of any activities that require an RWP.
5.3 Radiation Work Permit
The RWP is a form that describes the work to be performed, the location, duration and
personnel involved, and the radiological controls needed, such as respirator, urine
samples, breathing zone monitoring, time limitations for the activity, etc. The form must
also have an area for the RSO, or his designee's, signature. A copy of a form of RWP is
attached.
5.4 Procedure for Obtaining a Radiation Work Permit
The procedure for obtaining an RWP is:
a) When RWP-type work is to be performed, the Shift Foreman, Maintenance
Superintendent or other supervisory personnel shall complete the top portion of
the RWP, which will provide information on the specific work locations,
White Mesa Mill -Standard Operating Procedures Date: 02/15 Revision: EFRI-3
Book 20: Radiation Protection for Reclamation Activities, Section 5 Page 2 of 2
estimated work duration, type of work to be performed, and personnel utilized,
and present it to the RSO;
b) The RSO will indicate the radiological controls needed based on the
information given and the safety of personnel. The RSO or his designee will
provide the necessary surveillance and respiratory protection equipment;
c) No work can be performed until the RSO or his designee has approved the
RWP;
d) Any maintenance or RWP jobs done in the yellowcake dryer or packaging
enclosures will require a member of the Radiation Staff to be present for the
duration of the job;
e) All supervisors will be given training in and copies of the requirements for
using RWPs, with the permits remaining on file for five years; and
f) Any supervisor found to be knowingly and willfully violating these
procedures will be issued a written warning, and the situation will be reviewed by
appropriate management for remedial action.
EMPLOYEE SPOT ALPHA CONTAMINATION SURVEY
DATE NAME BOOTS CLOTHES HANDS COMMENTS
Alpha Instrument Information:
Instrument Model: ~~~~~~~~~~~-~-~
Instrument SN: ~--~--~-~----~---
Th 23 o Source SN: ~---------------
DP M: CPM: ---------
Efficiency: _____ _ Efficiency Factor: ____ _
Administration Building
Chief Chemist Mass Spec Balance Bucking
Office Room Room Room
I Metallurgical I I Chemical Laboratory
Laboratory
Product Room Mass Spec Process Engineer
Room Office
Electrical
Alpha Chemical Storage I Room Metallurgist
Office
Survey-
Date_
Mill Supt. Bioassay Room Training Room Men's Restroom
Office Inst._
Cal Date Closet
Respirator Sample Storage Women's Restroom
Room Room
SN __
I Coffee I n dpm/100 cm2 Area
Copy Room
Tech _
All units
Safety Safety Office Vault Office Conference Room Chief
Office Metallurgist
I I Office Receptionist Area
RSO Office Environmen Radiation Accounting WMI Engineer's Office Mill Manager's Office
tal Office Office Office I I Office Office
Waiting Area
~ -I VI n 5" CJ -ro z ~ V> QJ
c: n !"'" ...... ~ CJ ro ::J QJ ;::;: ...... V> ro
::J
0..
"'C
3 -..... 0 0 n 3 "'
-I Ill 0-ro-
1aued (OJlUOJ
VI c: < ro <
I
~
"'C ~
QJ
-
-I Ill
0-ro-
'--
Q]
I
0 ~
-
~ ... 11> 0
WOOJlS<ll:j
n 0
:::J r+ ...,
0
::::0
0 0
3
~ -l Vl n 5" 0 fl) z ~ OJ -n (/I ..... c: -:::; 0 :-+ fl) ::::! OJ ;:::;: .... Ill fl)
::::!
c..
"O
3 -...... 0 0 n
3 N
0 (1)
VI ~
Vl c: ....
n5 -<
I
~ "O -:::;
OJ
-I Ill
C'" ro
::::0 (1)
VI ...... ..... 0 0 3
-I Ill
C'" ro
1,
V> n
QJ
m ::::r
0 c
(./) m
Change/Lunch Room
--I Table J en's Locker Room M
-J
J
.--J Shower
~ l
-
Tablel
[ Table
-
-I r
Laundry Survey-Alpha r Room
Date _ D Inst.
Cal Date
SN
Women's Locker Room Tech
2
r Lunch Room I All units in dpm/lOO cm
J
J
!__
I I
Maintenance and Warehouse Areas
Rubbering Room "" Maintenance DJ ~ Foreman's
"' Office 0 0 3 Warehouse
Supply Office
Elect.
Foreman's
Office
Maintenance
Supt. Office
Ware ho us
e Office
Survey-Alpha
~ ~ Date ~ ~ a a 0 0 3 3
Operation Inst.
Foreman's Instrument Office
Shop Cal Date
Carpenter Shop Electrical Shop
Operation SN
Foreman's
Office
Tech
All units in dpm/100 cm2
Tool Room
Mech.
Office
SX Building
Survey-Beta/Gamma
Date -------
Inst. ______ _
Cal Date ____ _
SN
£ ...,
:h Catch Basin/Sump
units in mrem/hr
~ ~
DOD~ 8
0 d M;o;<XOm•;• J
I Vanadium SX Circuit I
I Uranium SX Circuit I 0 0
r ..... r ..... r "Ir 0
DODOO 0
...._____.. -----------~
Yellowcake Packaging Enclosure
Survey-Beta/Gamma
Date -------
Inst. ______ _
Cal Date ____ _
SN ______ _
Tech ______ _
All units in mrem/hr
Product Packaging Areas
n ~ i
V20s
MCC
V20s
Control
Room
I V20 5 Packaging Area I
Yellowcake Storage Area
Old Shifter's Office
Old Operator's Lunch Room
W.Pre-
Leach
8 L::J
8 L::J
8 5
-
8
l::J
SAG Mill/Leach Areas
8 l:J
8 2
h
8 L::J
8 L::J
Conveyor Belt From Grizzly to SAG Mill
Survey-Beta/Gamma
Date -------
Inst. ______ _
Cal Date ____ _
SN -------
Tech -------
All units in mrem/hr
#3 Pulp
Storage
#2 Pulp
Storage
#1 Pulp
Storage
Emergency Generator Building
Survey-Beta/Gamma
Date ______ _
Inst. ______ _
Cal Date ____ _
SN ______ ~
Tech ______ _
All units in mrem/hr
I Emergency Generator I
CCD/Precipitation Circuits
Survey -Beta/Gamma
Date ______ _
Inst.-~------
Cal Date ____ _
SN ______ _
Tech ______ _
All units in mrem/hr
BBBB[
BBBB
Flocculant
Storage
#1 ThirkPnPr
Flocculant
l\Aiv
g8
88
Uranium Packaging Circuit Upper Levels
Survey-Beta/Gamma
Date ______ _ North YC Dryer
Inst. _____ _
Cal Date ____ _
SN -------
North YC Dryer
0 0
Tech -------
~
YC MCC
All units in mrem/hr
YC Centrifuges 0
I I
South YC Dryer
I I
0 •
South YC Dryer
0
Administration Building
Chief Chemist Mass Spec Balance Bucking
Office Room Room Room
I I
Metallurgical
I Chemical Laboratory
Laboratory
Product Room Mass Spec Process Engineer
Room Office
Electrical
Beta/Gamma Chemical Storage I Room Metallurgist
Office
Survey-
Date_
Mill Supt. Bioassay Room Training Room Men's Restroom
Office Inst._
Cal Date. Closet
Respirator Sample Storage Women's Restroom
Room Room
SN __
I
Coffee
I Area
n mrem/hr Copy Room
Tech _
All units
Safety Safety Office Vault Office Conference Room Chief
Office Metallurgist
l Receptionist Area I Office
RSO Office Environmen Radiation Accounting WMI Engineer's Office Mill Manager's Office
talOffice Office Office I I Office Office
Waiting Area
~ -i Vl n 3" 0 C1) z ~ V> Ill
c: n r+ ..... :;,-0 C1) ::J Ill ;:::;: ..... V> II>
::J
3 ..... C1)
3 ........ :;,-.....
-I Ill
C'" ro-
1aued 10.1:i.uo)
I Vl c: < C1) -<
I
CD C1) ..... Ill ........ G')
Ill 3 3 Ill
-
-I Ill
C'" ro-
.....__
Q] " ~
~
.,... Ill (I) 0
WOOJlSaij
n 0
::::J
l"'T
"""I
0
::::0
0
0
3
~ -I Vl () :; 0 '1) z ~ QJ -"' c: n :-+ r+ :::T 0 Cl) ::J QJ ;:::;: r+ "' '1)
::J
3 ..... Cl)
3 .._
:::T .....
'
0 (I) Ill "'"
Vl c: ..... < Cl) < I
OJ Cl) r+ QJ .._
Gl
QJ
3
3 QJ
:::0
(I)
Ill .-+ ..,
0
0
3
-I QI
CJ"" ro-
-I QI
0-ro-
V> n
QJ
([)
:::r
0 c:
l/)
([)
Change/Lunch Room
Men's Locker Room I Table I
I
I
I Shower
I
Table ~
I Table
I Laundry Survey -Beta/Gamma
Room
D Date
Inst.
Cal Date
SN
Women's Locker Room Tech
All units in mrem/hr I Lunch Room I
Alternate Feed Circuit
~OOL:JO
!!
~ D ' 0 ' D ; 0 _tj
Filter
Aid
0 Filter Press #1
L:J
0 0 0
Oxidation
#2
0
Barrel
Dump
Station
888 ~~~
c:
~
Oxidation
#]
B EJ
Survey -Beta/Gamma
Date ______ _
Inst. ______ _
Cal Date ____ _
SN -------
Tech ~------
Alt units in mrem/hr
Maintenance and Warehouse Areas
Rubbering Room "" Maintenance OJ a Foreman's
::tl Office 0 0 3 Warehouse
Supply Office
Elect.
Foreman's
Office
Maintenance
Supt. Office
Warehous
e Office
Survey-Beta/Gamma
"" "" Date ~ ~ 0 0 0 0 3 3
Operation Inst.
Foreman's Instrument Office
Shop Cal Date
Carpenter Shop Electrical Shop
Operation SN
Foreman's
Office
Tech
All units in mrem/hr
Tool Room
Mech.
Office
Monthly Beta-Gamma Survey
Date: -------------
Technician: -------------
Function Check of Survey Instrument
Model#: ---------
Seri a I#: ----------
Calibration: --------
Source: ----------
Source#: ---------
Reading mrem/hr: _____ _
All units are in mrem/hr.
RSO Reviewed:
RSO Comments: _________ _
Feedstock Areas
Feedstock Source Reading
-
Survey-Beta/Gamma
Date _____ _
Inst. _____ _
Cal Date ____ _
SN _____ _
Tech _____ _
All units in mrem/hr
Tails Area
Survey-Beta/Gamma
Date _____ _
Inst. _____ _
Cal Date ____ _
SN ______ _
Cell #1-1
Tech _____ _
All units in mrem/hr
Cell#2
White Mesa Mill Weekly Alpha Survey
Date: ---------------
Technician: ---------------
Alpha Survey Instruments
Fixed
Model#:
Removable
Model#: ----------
Serial#: ----------
Ca Ii brat ion: ---------
Efficiency:---------
Factor: -----------
Background: ________ _
MDA: -----------
Notes:
----------
Seri a I#: ----------
Calibration: ---------
Efficiency: ________ _
Factor: ----------
Background:--------
MDA: -----------
All fixed readings are in dpm/100 cm 2
Tort= Total or Fixed Alpha Reading in dpm/100 cm 2
R or r = Removable Alpha Reading per swipe or filter (approximately 100 cm2)
RSO Reviewed:
RSO Comments: __________ _
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Radiation Survey of Equipment Released for Unrestricted Use
All equipment or material released from the White Mesa Mill to an unrestricted area must be surveyed for release in
accordance with the following procedure.
1. Monitor for Gross alpha contamination with the appropriate survey meter.
2. If calculated assay exceeds 1,000 dpm/100cm2, then perform swipe analysis at applicable points.
3. Decontaminate if a removable alpha exceeds 1,000 dpm/100cm2 or fixed alpha exceeds 5,000 dpm/100cm2.
4. Release equipment or material if alpha contamination and Beta-Gamma levels are below the following
limit:
Removable alpha -1,000 dpm/100cm2
Fixed alpha-5,000 dpm/100cm2 average
15,000 dpm/100cm2 maximum
Beta-Gamma-0.2 mr/hr @ lcm average
1.0 mr/hr @ lcm maximum
Released from White Mesa Mill to:----------------------------
Released by (print name):-----------Signature:-----------
Date: _____ _
List of Equipment Total Alpha dpm/lOOcml Removable Alpha Beta/Gamma mr/hr
dpm/100cm2
I,
2,
-
3.
4.
5.
Instrument Function checks
Alpha Meter: Beta-Gamma Meter: Removable Alpha:
Inst. Model~---~SN ____ _ Inst. Model SN ____ _ Inst. Model _____ S.N.~-___ _
Th-230 Source SN. ___ _ Cs-137 Source SN ___ _ Th-230 Source SN ____ _
dpm cpm~ __ eff __ _ Inst. Response ____ _ dpm cpm. ___ eff ___ _
Efficiency Factor ____ _ Cal. Date: ~-----Efficiency Factor ____ _
Cal. Date:-------Cal. Date: -------Bkg ___ _
MDA ___ _
Was a copy of this document offered to the recipient? Yes or No Signature of recipient __________ _
Comments: ________________________________________ _
ATTACHMENT E
EXISTING COVER DESIGN DOCUMENTS
ATTACHMENT E.1
TITAN ENVIRONMENTAL 1996 TAILNGS COVER DESIGN REPORT
(from approved Reclamation Plan Revision 3.2b)
---------------=-5 i a:-~~Environmental
TAILINGS COVER DESIGN
White Mesa Mill
Prepared For:
Energy Fuels Nuclear, Inc.
1515 Arapahoe, Suite 900
Denver, CO 80202
September 1996
By:
TIT AN Environmental Corporation
7939 East Arapahoe Road, Suite 230
Englewood, Colorado 80112
TABLE OF CONTENTS
LIST OF FIGURES
LIST APPENDICES
I. 0 SOIL COVER DESIGN
! . I Radon Flux Attenuation
l .2 Infiltration Analysis
13 Freeze/Thaw Evaluation
l .4 Soil Cover Erosion Protection
1.5 Slope Stability Analysis
l 1 Static Analysis
J .5.2 Pseudostatic Analysis (Seismicity)
1.6 Cover Material/Cover Material Volumes
FIGURES
APPENDICES
REFERENCES
:
3
5
6
7
8
9
9
9
l
2
3
4
Appendix
A
B
c
D
E
F
G
H
LIST OF FIGURES
Reclamation Cover Grading Plan for Cells 2, 3, and 4A
Reclamation Cover Grading Plan for Cells 2 and 3
Reclamation Cover Cross Sections and Details
Reclamation Cover Cross Sections and Details
LIST APPENDICES
Laboratory Test Data
Radon Calculation
Radon Flux Measurments
HELP Model
Freeze/Thaw Evaluation
Erosion Protection
Slope Stability
Material Quantities
Page i
ENERGY FUELS NUCLEAR
WHITE MESA l\ULL
TAILINGS COVER DESIGN
LO SOIL COVER DESIGN
A six-foot thick soil cover for the uranium tailings Cells 2, 3 and 4A was designed using on-site
materials that will contain tailings and radon emissions in compliance with regulations by the
United States Nuclear Regulatory Commission (NRC) and by reference, the Environmental
Protection Agency (EPA), The cover consists of a one-foot thick layer of clay, available from
within the site boundaries (Section 16), below two-feet of random fill, available from stockpiles
on-site. The clay is underlain with tluee feet (minimum) random fill soil, also available on site
The cover layers will be compacted to 95 percent maximum dry density using standard
construction techniques. In addition to the soil cover, a minimum 3 inch (on the cover top) to
12-inch (on the cover slopes) layer ofriprap material will be placed over the compacted random
fill to stabilize slopes and provide long-term erosion resistance.
Uranium tailings soil cover design requirements for agency compliance include:
• Attenuate radon flux to an acceptable level (20 picoCuries-per meter squared-per second
[pCi/m2 /sec]) (NRC, 1989);
• Minimize infiltration into the reclaimed tailings cells;
• Maintain a design life of up to 1,000 years and at least 200 years; and
• Provide long-term slope stability and geomorphic durability to withstand erosional forces of
wind, the probable maximum flood event, and a horizontal ground acceleration of 0. 1 g due to
seismic events.
Several models/analyses were utilized in simulating the soil cover effectiveness: radon flux
attenuation, hydrologic evalnation of infiltration, freeze/thaw effects, soil cover erosion
protection, and static and pseudostatic slope stability analyses. These analyses and results are
Page 2
discussed in detail in Sections LI through LS. The soil cover configuration presented above
consisting of (from top to bottom); a minimum three inches of riprap material on the top cover,
two feet compacted random fill, one foot compacted clay, and a minimum of three feet random
fill beneath the clay meets NRC and EPA requirements.
The soil cover design for the uranium tailings Cells 2, 3, and 4A was developed based on two
construction options:
• An integrated soil cover over Disposal Cells 2, 3, and 4A; and
• A cover over Cells 2 and 3, where Cell 4A tailings are excavated and placed into Cell 3.
For modeling/analysis purposes it was assumed that the physical and radiological parameters of
the tailings in Cells 2, 3, and 4A are not dependent on the tailing volume in each individual cell.
Therefore, each of the two construction options above resulted in the same soil cover
configuration. The only variation between the options is in the required volumes of cover
materials, which is dependent only on the surface area to be covered (see Section 1.7).
The final grading plans for the two options are presented on Figures I and 2, respectively. As
indicated on the figures, the top slope of the soil cover will be constructed at 0.2 percent and the
side slopes, as well as transitional areas between cells, will be graded to five horizontal to one
vertical (5H: IV).
A minimum of three feet random fill is located beneath the compacted fill and clay layers (see
cross-sections on Figures 3 and 4. The purpose of the fill is to raise the base of the cover to the
desired subgrade elevation. In many areas, the required fill thickness \viii be much greater.
However, the models and analyses were performed conservatively assuming only a three-foot
layer. For modeling purposes, this lower, random fill layer was considered as part of the soil
cover for performing the radon flux attenuation calculation, as it effectively contributes to the
reduction of radon emissions (see Section I. l ). The fill was also evaluated in the slope stability
analysis (see Section 1.5). However, it is not defined as part of the soil cover for other design
calculations (infiltration, freeze/thaw, and cover erosion).
Page 3
'The following sections describe design considerations, complete with calculations performed aud
parameters utilized, in developiug the tailings impoundment soil cover to meet regulatory
requirements.
1.1 Radon Flux Attenuation
The Environmental Protection Agency (EPA) rules in 40 Code of Federal Regulation (CFR) Part
] 92 require that a "uranium tailings cover be designed to produce reasonable assurance that the
' radon-222 release rate would not exceed 20 pCi/m'/sec for a period of 1,000 years to the extent
reasonably achievable and in any case for at least 200 years when averaged over the disposal area
over at least a one year period" (NRC, 1989). NRC regulations presented in I 0 CFR Part 40 also
restrict radon flux to less than 20 pCi/m2/sec. The following sections present the analyses and
design for a soil cover which meets this requirement
l .Ll Predictive Analysis
The soil cover for the tailings cells at White Mesa Mill was evaluated for attenuation of radon
gas using the digital computer program, RADON, presented in the NRC's Regulatory Guide 3.64
(Task WM 503-4) entitled "Calculation of Radon Flux Attenuation by Earthen Urarium Mill
Tailings Covers". The RADON model calculates radon-222 flux attenuation by mulii-layered
earthen urarium mill tailings covers, and determines the minimum cover thickness required to
meet NRC and EPA standards. The RADON model uses the following soil properties in the
calculation process:
• Soil layer thickness [centimeters (cm)];
• Soil porosity (percent);
• Density [grams-per-cubic centimeter (gm/cm3)]:
• Weight percent moisture (percent);
• Radium activity (piC/g);
• Radon emanation coefficient (unitless); and
Page 4
' • Diffusion coefficient [square centimeters-per-second ( cm-lsec) ].
Physical and radiological properties for tailings m1d random fill were analyzed hy Chen and
Associates (l 987) and Rogers and Associates (1988). Clay physical data from Section 16 was
analyzed hy Advanced Terra Testing (l 996) and Rogers and Associates (I 996). See Appendix A
for laboratory test data results.
The Radon model was performed for the following cover section (from top to bottom):
• two feet compacted random fill;
• one foot compacted clay; and
• a minimum of three feet random fill occupymg the freeboard space between the
tailings and clay layer.
The three layers are compacted to 95 percent maximum dry density. The top riprap layer was not
included as part of the soil cover for the radon attenuation calculation.
The results of the RADON modeling exercise show that the uranium tailings cover configuration
' will attenuate radon flux emanating from the tailings to a level of 17.6 pCi/m"/sec. This number
was conservatively calculated as it takes into account the freeze/thaw effect on the uppermost
part (6.8 inches) of the cover (Section 1.3). The soil cover and tailing parameters used to run the
RADON model, in addition to the RADON input and output data files, are presented in
Appendix B as part of the Radon Calculation brief. Based on the model results, the soil cover
design of six-foot thickness will meet the requirements of 40 CFR Part 192 and I 0 CFR Part 40.
l, I.2 Empirical Data
Radon gas flnx measurements have been made at the White Mesa Mill tailings piles over Cells 2
and 3 (see Appendix C). These cells are currently covered with three to four feet of random fill.
Radon flnx measurements, averaged over the covered areas, were as follows (EFN, 1996):
Cell 2
Cell 3
1224
7.7 pCi/m2 sec
7,5 pCilm2 sec
1995
6.1 pCi/m2 sec
11. l pCi/m2 sec.
Page 5
Empirical data suggest that the random fill cover, alone, is currently providing an effective
barrier to radon flux. Thus, the proposed tailings cover configuration. which is thicker, moisture
adjusted, contains a clay layer and is compacted, is expected to attenuate the radon flux to a level
below that predicted by the Radon modeL The field radon flux measurements confim1 the
conservatism of the cover design. This conservatism is necessary, however, to guarantee
compliance with NRC regulations under long term climatic conditions over the required design
life of200 to 1,000 years.
1.2 Infiltration Analysis
The tailings ponds at White Mesa Mill are lined with synthetic geomembranc liners which could
lead to the long-term accumulation of water from infiltration of precipitation. Therefore, the soil
cover was evaluated to estimate the potential magnitude of infiltration into the capped tailings
ponds. The Hydrologic Evaluation of Landfill Performance (HELP) model, Version 3.0 (EPA,
1994) was used for the analysis. HELP is a quasi two-dimensional hydrologic model of water
movement across, into, through, and out of capped and lined impoundments. The model utilizes
weather, soil, and engineering design data as input to the model, to account for the effects of
surface storage, snoRmelt, run-off, infiltration, evapotranspiration, vegetative growth, soil
moisture storage, lateral subsurface drainage, and unsaturated vertical drainage on the specific
design, at the specified location.
The soil cover was evaluated based on a two-foot compacted random fill layer over a one-foot
thick, compacted clay layer. The soil cover layers were modeled based on material placement at
a minimum of 95 percent of the maximum dry density, and within two percent of the optimum
moisture content per American society for Testing and Materials (ASTM) requirements, The top
riprap layer and the bottom random fill layer were not included as part of the soil cover for
infiltration calculations.
The random fill will consist of clayey sands and silts with random amounts of gravel and rock-
size materials, The average hydraulic conductivity of several samples of random fill was
calculated, based on laboratory tests, to be 8.87xl0·7 cm/sec. The hydraulic conductivity of the
clav source from Section 16 was measured in the laboratorv to be 3.7xHr8 cm/sec. Geotechnical ~ .
soil properties and laboratory data are presented in Appendix A
Page 6
Key HELP model input parameters include:
• Blanding, Utah, monthly temperature and precipitation data, and HELP model default solar
radiation, and evapotranspiration data from Grand Junction, Colorado. Grand Junction is
located north east of Blanding in similar climate and elevation;
• Soil cover configuration identifying the number of layers, layer types, layer thickness', and
the total covered snrface area;
• Individual layer material characteristics identifying saturated hydraulic conductivity,
porosity, wilting point, field capacity, and percent moisture; and
• Soil Conservation Service runoff curve numbers, evaporative zone depth, maximum leaf area
index, and anticipated vegetation quality.
Water balance results, as calculated by the HELP model, indicate that precipitation would either
run-off the soil cover or be evaporated. Thus, model simulations predict zero infiltration of
surface water through the soil cover, as designed, These model results are conservative and take
into account the freeze/thaw effects on the uppermost part (6.8 inches) of the cover (Section L3).
The HELP model input and output for the tailings soil cover are presented in the HELP Model
calculation brief included as Appendix D.
1.3 Freezeffhaw Evaluation
The tailings soil cover of one foot of compacted clay covered by two feet of random fill was
evaluated for freeze/thaw impacts. Repeated freeze/thaw cycles have been shown to increase the
bulk soil permeability by breaking down the compacted soil structure.
The soil cover was evaluated for freeze/thaw effects using the modified Berggren equation as
presented in Aitken and Berg (1968) and recommended by the NRC (U.S. Department of
Energy. !988)" This evaluation was based on the properties of the random fill and clay soil. and
meteorological data from both Blanding, Utah and Grand Junction. Colorado"
The results of the freeze/thaw evaluation indicate that the anticipated maximum depth of frost
penetration on the soil cover would be less than 6.8 inches. Since the random fill layer is two
feet thick, the frost depth would be confined to this layer and would not penetrate into the
Page 7
underlying clay layer. The pcrfonnance of the soil cover to attenuate radon gas flux below the
prescribed standards, and prevent surface water infiltration, would not be compromised, The
input data and results of the freeze/thaw evaluation are presented in the Effects of Freezing on
Tailings Covers Calculation brief included as Appendix E
1.4 Soil Cover Erosion Protection
A riprap layer was designed for erosion protection of the tailings soil cover. According to NRC
guidance, the design must be adequate to protect the soil/tailings,against exposure and erosion
for 200 to l ,000 years (NRC, 1990). Currently, there is no standard industry practice for
stabilizing tailings for 1,000 years. However, by treating the emhankment slopes as wide
channels, the hydraulic design principles and practices associated with channel design were used
to design stable slopes that will not erode. Thus, a conservative design based on NRC guidelines
was developed. Engineering details and calculations are summarized in the Erosion Protection
Calculation brief provided in Appendix F.
Riprap cover specifications for the top and side slopes were determined separately as the side
slopes are much steeper than the slope of the top of the cover. The size and thickness of the
riprap on the top of the cover was calculated using the Safety Factor Method (NUREG/CR-4651,
1987), while the Stephenson Method (NUREG/CR-4651, 1987) was used for the side slopes,
These methodologies were chosen based on NRC recommendations (1990).
By the Safety Factor Method, riprap dimensions for the top slope were calculated in order to
achieve a slope "safety factor" of l J, For the top of the soil cover, with a slope of 0.2 percent,
the Safety Factor Method indicated a median diameter (D50) riprap of 0.28 inches is required to
stabilize the top slope. However, this dimension must he modified based on the long-tenn
durability of the specific rock type to be used in construction. The suitability ofrock to be used
as a protective cover must be assessed by laboratory tests to determine the physical
characteristics of the rocks. The sandstones from the confluence of Westwater and Cottonwood
Canyons require an oversizing factor of 25 percent Therefore, riprap created from this sandstone
source should have a D50 size of at least 0.34 inches and should have an overall layer thickness
of at least three inches on the top of the cover,
Page 8
Riprap dimensions for the side slopes were calculated using Stephenson Method equations. The
side slopes of the cover are designed at 5H:!V. At this slope, Stephenson's Method indicated the
unmodified riprap D50 of 3.24 inches is required. Again assuming that the on-site sandstone will
be nsed, the modified D50 size of the riprap should be at least 4.05 inches with an overall layer
thickness of at least 12 inches.
The potential of erosion damage due to overland flow, sheetflow, and channel scouring on the
top and side slopes of the cover, including the riprap layer, has been evaluated. Overland flow
calculations were perfomied using site meteorological data, cap design specifications, and
guidelines set by the NRC (NUREG/CR-4620, 1986). These calculations are included in
Appendix F. According to the guidelines, overland flow velocity estimates are to be compared to
"permissible velocities", which have been suggested by the NRC, to determine the potential for
erosion damage. 'W'hen calculated, overland flow velocity estimates exceed permissible
velocities, additional cover protection should be considered. The permissible velocity for the
tailings cover (including the riprap layer) is 5.0 to 6.0 feet-per-second (ft./sec.) (NUREG/CR
4620). The overland flow velocity calculated for the top of the cover is less than 2.0 ft/sec., and
the calculated velocity on the side slopes is 4.9 ft/sec. Therefore, the erosion potential of the
slopes, due to overland flow/channel scouring, is within acceptable limits and no additional
erosion protection is required.
1.5 Slope Stability Analysis
Static and pseudostatic analyses were perfonned to establish the stability of the side slopes of the
tailings soil cover. The side slopes are designed at an angle of 5H: IV, Because the side slope
along the southern section of Cell 4A is the longest and the ground elevation drops rapidly at its
base, this slope was determined to be critical and is thus the focus of the stability analyses.
The computer software package GSLOPE, developed by MITRE Software Corporation, has been
used for these analyses to determine the potential for slope failure. GSLOPE applies Bishop's
Method of slices to identify the critical failure surface and calculate a factor of safoty (FOS).
The slope geometry and properties of ihe construction materials and bedrock are inpnt into the
model. These data and drawings are included in the Stability /rnalysis of Side Slopes
Calculation brief included as Appendix G. For this analysis, competent bedrock is designated at
J 0 feet below the lowest point of the foundation [i.e., at a 5,540-fool elevation above mean sea
Page 9
level (ms!)]. This is a conservative estimate, based on the borehole logs supplied by Chen and
Associates (1979), which indicate bedrock near the surface.
1.5.1 Static Analysis
For the static analysis, a FOS of 1.5 or more was used to indicate an acceptable level of stability.
The calculated FOS is 2.91, which indicates that the slope should be stable under static
conditions. Results of the computer model simulations are included in Appendix G.
1.5.2 Pscudostatic Analysis (Seismicity)
The slope stability analysis described above was repeated under pseudostatic conditions in order
to estimate a FOS for the slope when a horizontal ground acceleration of 0.1 Og is applied. The
slope geometry and material properties used in this analysis are identical to those used in the
stability analysis. A FOS of l .O or more was used to indicate an acceptable level of stability
under pseudostatic conditions. The calculated FOS is 1.903, which indicates that the slope
should be stable under dynamic conditions. Details of the analysis and the simulation results are
included in Appendix G.
Recently, Lav.rence Livermore National Laboratory (LLNL) published a report on se1sm1c
activity in southern Utah, in which a horizontal ground acceleration of 0.!2g was proposed for
the White Mesa site. The evaluations made by LLNL were conservative to account for
tectonically active regions that exist, for example, near Moab, Utah. Although, the LLNL report
states that " ... [Blanding] is located in a region known for its scarcity of recorded seismic events,"
the stability of the cap design slopes using the LLNL factor was evaluated. The results of a
sensitivity analysis reveal that when considering a horizontal ground acceleration of 0. l2g, the
calculated FOS is L 778 which is still above the required value of 1.0, indicating adequate safety
under pseudostatic conditions. This analysis is also included in Appendix G.
l.6 Cover Material/Cover Material Volumes
Construction materials for reclamation will be obtained from on-site locations. Fill material will
be available from the stockpiles that were generated from excavation of the cells for the tailings
facility. If required, additional materials are available locally to the west of the site. A clay
material source. identified in Section 16 at the southern end of the White Mesa Mill site, will be
Page IO
used to construct the one-foot compacted clay layer. Riprap material will be taken from on-site
sandstone, located at the confluence of Westwater and Cottonwood Canyons,
Material quantities have been calculated for each of the components of the reclamation cover.
Volume estimates were made for the two soil cover design options, as follows:
• Option 1: an integrated soil cover which incorporates Disposal Cells 2, 3, and 4A, and
• Option 2: a cover which includes Cells 2 and 3, where Cell 4A tailings have been excavated
and placed in Cell 3,
The quantity of random fill required to bring the pond elevation up to the soil cover subgrade and
construct the final slope was not calculated, This layer will be a minimum of three feet in depth
and is dependent on the final tailings grade, which is not kno'NR
For Design Option I, construction will require the following approximate quantities of materials:
Material Volume (cubic yards):
Clay 365,082
Random Fill 737,717
Riprap (top of cover) 82,762
Riprap (side slopes) 41,588
For Design Option 2, construction will require the following approximate quantities of materials:
Material Volume (cubic yards)
Clay 289,514
Random Fill 585,334
Riprap (top of cover) 64,984
Riprap (side slopes) 35,885
Material quantities calculations are provided in Appendix H as part of the Tailings Cover
Material Volume Calculation brief,
LEGEND
' :>'.'821:' EXISTING SPOT ELEVATION .
ELEVATION OF TOP OF COVER
-5560-EXISTING GROUND CONTOUR
No.
NOTES
1. THE COVER WILL MEET THE GROUND WITH A DOWNWARD SIDE SLOPE OF 5H:1V.
2 . ELEVATION OF THE BERMS SHALL BE ADJUSTED TO MATCH WITH THOSE
OF THE COVER.
3 . CELL #1 WILL BE REMOVED DURING RECLAMATION.
4. TOPOGRAPHY BY KLH ENGINEERING FROM AERIAL PHOTOGRAPHY DATED
AUGUST 23, 1993. CONTOUR INTERVAL IS 2 FT.
5. SEE FIGURES 3 AND 4 FOR CROSS SECTIONS AND DETAILS.
SCALE -------200 0 200 400 FEET
8 -12-96 ISSUED FOR RECLAMATION PLAN K.G. 1""1
DATE ISSUE / REVISION OWN. BY CK'D BY AP'D BY
3 & 4A
PREPARED FOR
ENERGY FUELS
BLANDING,
FIGURE 1
NUCLEAR
UTAH
DRAWING NUMBER
6111-E1
LEGEND
_ss oJ.s -
-5560-EXI STING GROUND CO iTOUR
NOTES
1. THE COVER WILL MEET THE GROUND WITH •
2. ELEVATION OF THE BERMS SHOULD BE ADJUSTED TO MATCH WITH
OF THE COVER. I
THOSE .I I
I
3. CELL #1 WILL BE REMOVED DU ~llNG RECLAMATION.
4. TOPOGRAPHY BY KLH ENGINEERING FROM AERIAL PHOTOGRAPHY DATED " AUGUST 23, 1993. CONTOUR ·INTERVAL IS 2 FT.
-11
5. CELL 4A BOTTOM SHALL BE GRADED TO DRAIN THROUGH BREACH AREA.
BREACH AREA SHALL BE CONS1i11UCTED WITH SMOOTH TRANSITIONS INTO
EXISTING GROUND AREAS. BREAI CH AREA SIDESLOPES TO BE GRADED TO A
MAXIMUM 3H: 1 v. I I I
6. SEE FIGURES 3 AND 4 FOR CROSS SECTIONS AND DETAILS. ,
•
' SCALE
' 200 0 200 400 FEET
ill 8 -12-96 ISSUED FOR RECLAMATION PLAN
11 K.G.
" ISSUE / REVISION II
OWN. BY CK'O SY AP'D BY No. DATE
11
(E~POR ATION )
!
.-?ROJECTED APPROXIMATE CATCH POINT
--"-(SEE NOTE 1)
CEL L 3
.) ......
'
'
I ···-[-
·--~-----
618.5
CELL 2 !ey
o·---
If 0
iJ/
sa17.5
!ey
0
I If
' iJf ss1J.s
I I
56.tJ
5B()Q.:~ ------=--..._ ---' ~(l!!.7
_, 5609.1
. ----=----sat'<!.!!
W, L, 5578.8
PROJECTED APPROX1MA TE CATCH POIN T
{SEE NOTE 1)
BREACH TO PROVIDE
CELL 4A DRAINAGE
(SEE NOTE 5)
·--i--
+5618.5
~;ii\2.'
+ I
I
-----
DATE:
SCALE:
i I
I .~-~ l T I
I
I
RECLAMATION COVER
GRAD ING PLAN FOR CELLS 2 & 3
PREPARED FOR
ENERGY FUELS
BLANDING,
NUCLEAR
UTAH
:·i~9 8.~
·I-
(
Environmental
8 -12-96 FIGURE 2 DRAWING NUMBER
6111 -E2 & AS SHOWN
.
• -
!") w
I A ~
~
~ 564
c.o
562
~ _J
(/) DETAIL 2
~ 560 ~
~ a:: f-w w zw LL 558 -CD ~~ z a:: ::::> 0 556 oz >= ~ _J 554 w 6 6 0 N
A
564
562
~ _J
(/)
~ 560 ~
f-w w LL 558
z
0 556 ~ _J 554 w 6 6 0 N
ill 8 -12-96 ISSUED FOR RECLAMATION PLAN K.G.
No. DATE ISSUE / REVISION OWN. BY CK'D BY AP'D BY
0.2%
6 6 0 0 ... "'
1 3
3
EXISTING CELL 4A
BERM
6 6 0 0
" <O
RIPRAP
RANDOM FILL (2 FT. THICK)
COMPACTED CLAY (1 FT. THICK)
RANDOM FILL ABOVE TAILINGS (MINIMUM 3 FT. THICK)
DETAIL 1 DETAIL 2 DETAIL 1 APPROXIMATE TAILINGS SURFACE
J TAILINGS J
TAILINGS XISTIN \j1
CELL 2 CELL
CELL
6 0
CXl
CELL
6 0
CXl
CELL 3 BERM
4A
APPROXIMATE BOTTOM OF CELL
APPROXIMATE BOTTOM OF CELL
6 6 6 6 6 6 6 6 6 0 0 0 0 0 0 0 0 0 0 N ... "' 00 0 N " "' -----N N N N
SECTION A-A' (WITH COVER ON CELLS 2. 3 & 4A)
RIPRAP
RANDOM FILL (2 FT. THICK)
COMPACTED CLAY ( 1 FT. THICK)
RANDOM FILL ABOVE TAILINGS (MINIMUM 3 FT. THICK)
DETAIL I APPROXIMATE TAILINGS SURFACE
3
3 TAILINGS
XISTIN \j1 DETAIL 2
CELL 2 CELL 3 BERM
4A
APPROXIMATE BOTTOM OF CELL
APPROXIMATE BOTTOM OF CELL
6 0
0 -
TAILINGS
6 6 6 6 6 6 6 0 0 0 0 0 0 0
N ... "' CXl 0 N .,. ----N N N
SECTION A-A' (WITH COVER ON CELLS 2 & 3)
,------RIPRAP (SEE NOTE 1)
UPPER RANDOM FILL
COMPACTED CLAY
~-RANDOM F!LL ABOVE TA!LINGS ..
RIPRAP (SEE NOTE 2)
OUTER RANDOM FILL
COMPACTED CLAY
CELL
6 0 "' N
DETAIL 1
2
APPROXIMATE BOTIOM OF CELL
6 6 6 0 0 0 CXl g N N ,,.,
DETAIL 1
TAILINGS
2
APPROXIMATE BOTTOM OF CELL
6 6 6 0 0 0 CXl 0 N N ,,., ,,.,
DETAIL 1: COVER DETAIL FOR POND SURFACE AREAS
(NOT TO SCALE)
DETAIL 2: COVER DETAIL FOR SIDE SLOPES
(NOT TO SCALE)
NOTES:
1. RIPRAP PLACED ON THE TOP OF COVER WILL CONSIST OF ROCK
WITH 050 MINIMUM OF 0.34 INCHES.
2. RIPRAP PLACED ON THE SIDE SLOPES OF COVER WILL CONSIST OF
ROCK WITH D50 MINIMUM OF 4.1 INCHES.
3. POND BOTTOM ELEVATIONS INFERRED FROM 'CELL 4 PHASE A AND
PHASE 8 PLAN', WESTERN ENGINEERS INC., (JANUARY 17, 1989).
4. SEE FIGURES 1 ANO 2 FOR CROSS SECTION LOCATIONS
A'
TOP OF BERM 5640
REMOVED
5620
1 5600
5580
5560
6 6 5540
0 0 " "' ,,., ,,.,
A'
TOP OF BERM 5640
REMOVED
5620
1
5600
5580
5560
6 6 5540
0 0 " "' ,,., ,,.,
DATE:
SCALE:
VERTICAL SCALE =-----~
!!!!!!!!!I - -40 0 40 80 FEET
HORIZONTAL SCALE
llillJA'~**lilil ---~
200 0 200 400 FEET
RECLAMATION COVER
CROSS SECTIONS & DETAILS
PREPARED FOR
ENERGY FUELS NUCLEAR
BLANDING, UTAH
8-12-96
AS SHOWN
Environmental
FIGURE 3 DRAWING NUMBER
6111-E3
..;-w
I
"' "' zw -co ~ :::;
"' ::> oz
& 8-12-96 ISSUED FOR RECLAMATION PlAN
No. DATE ISSUE I REVlS ION
--. .
~ ~ m ,
~
~ w
"
z
~ ~ 554 w !,
~ ~ m ,
~
~ w w "
z
0
~ w ~ 554 w i, i,
0 N
I DW1N. BY CK'D BY AP'D BY
i, i,
0 0 m 00
i, i,
0 0
N •
!, i, i,
0 0 0 • m w
~ ~ m ,
~ 56
~ w "
z
Q
~ ~ 554 w
I
I
I
""""' RANDOM f'lll (2 fl. lHICK}
• /,-<OOl.!PACTEO CLAY (l 1FT. THICK)
RANDOM FILL ABOV~ TAILINGS (MINIMUM 3 fl. THICK)
APPROXIMATE TAILINGS SURFACE
i, i, i, i,
21 . ~ 0 0 • m ---
-- --
i, i, !, !,
0 0 0 0 0 N • m ----
i, i, !, i,
0 0 0 N • m
-~
TAILINGS
CELL 2
'--APPROXIMATE OOITOM Of CEU
i, i, i, i,
0 0 0 0 00 0 N • -N N N
SECTION 8-8'
RANDOM fill (2 FT. THICK) I
COMPACTED CLAY (I FT. nj1cK)
RANDOM FlLL ABOVE TAILINGS (MIN IMUM 3 FT. THICK)
APPROXll.IATE TAILINGS !SURFACE
CELL 3
APPROXIMATE BOTIOM OF CELL
SECTION c-c·
RANDOM FILL (2 FT. THICK)
COMPACTED CLAY (1 FT. THICK)
I I
!,
0 m
N
RANDOM FILL ABOVE TAILINGS (MINIMUM 3 FT. THICK)
APPROXIMATE TAILINGS SURFACE
TAILINGS
CE LL 4A
APPROXIMATE 80TI~M OF CELL
i, i, Ii i, i,
0 0 0 0 w 0 N • m ----
SECTION 0-Q'
.1
NOTES:
1.
2.
FOR PONO SURFACE ANO SIDE SLOPE COVER DETAILS SEE FIGURE 3.
PONO BOITqM INFERRED FROM 'CELL 4 PHASE A AND
WESTERN ENGINEERING INC., (JANUARY 17, 1989).
, I
I
PHASE 8 PLAN',
I
3. SEE FIGURES 1 AND 2 FOR CROSS SECTIONS LOCATIONS
I
··-,·-~-!
g
m
N
---------. ---------------l • ~
i, i, i, i,
0 0 0 0 00 0 N • N n n n
. '
I
I
!, !, g i, !,
0 0 0 0 00 0 N • m N n ~ n n
i, !, 6 5540
0 0 0 w 0 N -N N
' ,.
J, 5540
~
i,
0 w n
DATE:
SCALE:
6 5540
0 0 •
VERTCIAL SCALE
~
40 0 40 80 FEET
HORIZO NTAL SCALE
iiiiiiiiiiiiiiii
200 0 200 400 f[ET
RECLAMATION COVER
CROSS SECTIONS & DETAILS
PREPARED FOR
ENERGY FUELS
BLANDING,
8-12-96 4 AS SHOW N
NUCLEAR
UTAH
DRAWING NUMBER
6111-£4
APPENDIX A
Laboratory Test Data
Atterberg
lings 28 6
Random 11 7
1
Specific
Gravity
2.85
2.67
es 1 i
% Passing
No. 200
46
48
(
Maximum
Dry Density
104.0
120.2
)
Optimum
Moisture
18. l
11.8
4
s
• • • • ~ ~ l • $ • • * ' t •
f ~ t • l • t i • i
• t * t * • l f • t • t * • • •
•*•*~••ttl ··~· •t•ftt•••~t~
~ ' • • • • ,. • • * • • , t • r • • * t * + • t • , , • •
~··*~·$~(t••··~·•tl ·~
'""'"'""•••••Hu•••mouu•H•••mo«•""""'"'°"""""•m+""""""""""'"'"""'"'""''""'"'"'"''"'''""'''''''"'
• ~ • • t • • f • • • t t t • • l I ~ • • • • , • ,
' • f • • • ~ ' • t , * • • • ~ ~ • i • ~ l
6
t • • ~ t t ~ + • 1 ' * t • I. ' • * t I • t t • f ~
* t i t t * • ~ • • • • f i • • • ~ t t l • f j ' •
: : ;...;..:-:-cr.;~y· :MA~Rl~t ·
. . . S.IT '# 1 · · · · I · · · · · • • If • f • • • * ~ t ~
t • • • ~ ~ • • , I t * ~ * t t f • t
; • • 1 ~ • ~ l • • t t ~ ~
f t j f t • f • i t • • ~ f ~ J f •
8 10 14 6
TENSION, BAR
SUMMARY Qf CAflLLARY MOIS UR
RELATJONSHIP TEST RESULTS
WHITE MESA CT
F 3. 1
t • t • t l * • • • t t t t i t t t •
t * i t t ~ t ' ~ ~ , t • I t •
t t $ t " • i • •
t • ~ f • • ' • f • t ' 6 '
•H•h••••••••••HH•••<>·~···f••••••U*U~~··· ....... tt ...... t~"'f,.H+•M••Ju...,,..u ........... uun-·-••H-·~:'h• ... H*"'~"*"*-*-U*"'"'""'"'H"""*""""''"'"""'"'~H••--·HH•••~~·"*•••···"'
6 a
TENSION,
i t l ~t ~ ~
10 12 4
SUfv1MAf1Y Of CAf'IJ_LARY MOISTUR
RELATIONSHIP TEST R LILTS
WHITE MESA PROJECT
FIGURE 3.5-~
I ......
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SECTION 6
ROGERS ANO ASSOC IATES ENGINEERING
CORPORA TI ON
Letter Dated March 4, 1988
Letter Dated May 9, 1988
Radiological Properties
•
II
~ •
: -I !
I
Rogers & Associates Engineering Corporation
h
rporation
l
ly:
We have the tests ordered on the four es shippej to JS.
The l lows:
Radium Emanation Diffusion
e Fraction Coeffic. Moisture Sa tu rat ion
981±4 0.19±0.01 2.0E-02 1. .2 0.39
8.4£-03 l.44 19.1 0.56
ite (2,3,&5) l. 6£-02 1.85 6.5 0.40
4.SE-04 1.84 12.5 o.
te #1 l. 6E-02 1.85 8 .1 0.48
l.4E-03 1.84 .6 0.76
te f/4 1. lE-02 1.65 15 .4 0.63
4.2E-04 1. 19.3 0.80
The es will be shipped back to you in the next few weeks. If you
any t ions re ing results on es ease free to ca 11 .
ncere1 •
I
I
I
I
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1{
A
E
~ogers & Associates Enginee ring. Corporation
Mr . C.O. Sealy
UHETCO Minerals Corporation
P.O . Box 1029
Grand Junction, CO 81502
Dear Mr . Sealy:
Post Office Box 330
Salt Lake City, Utah 84110
[phone]
May 9, 1988
C8700/ 22
The tests for radium content and radon emanation coefficient in the
following Sctmples have been completed and the results are as follows:
Sample
Random (2,3 '1. 5)
Site l
Site 4
Radium ( pCi/ g)
1.9+0.l
2.2 + 0.1
2.0 + 0.1
Radon
Emanation Coefficient
0.19 + 0.04
0.20.+ 0.03
0.11 + 0.04
I f you have any questions regarding these res ults please feel free to
call Or . Kirk Ni el son or me.
RYB:m5
Si ncer ely,
~ ttli---
Renee Y. Bowser
Lab Supervi sor
515 East 4500 South· Salt Lake City. Ucah 84107
ATTERBERG LIMITS TEST
ASTM D 43
CLIENT
BORING
DEPTH
TYPE
Plastic Limit
Determination
Wt Dish & Wet Soil
Wt Dish & Soil
Wt of Moisture
Wt of Dish
Wt of Dry Soil
Moisture Content
1
.34
2.96
0.38
1.05
1.91
19.90
Limit
Determination
Device Number
Number of Blows
Wt Dish & Wet Soil
Wt Dish & Dry Soil
Wt of Moisture
Wt of Dish
Wt of Soil
Moisture Content
Limit
Plastic Limit
Index
103.1
19 9
83.
1
39
12.18
6.64
5.54
1.10
5.54
100.00
2
4.06
3.57
0.49
1.11
2.46
19.92
0258
2
27
10.42
5 67
4.75
1.06
4.61
103.04
3.42
3.03
0.39
1.06
1.97
19.80
3
18
10.92
5.87
5.05
1.06
4.81
104.99
4
14 9
12.33 10.06
6.53 5.34
5.80 4.72
1.10 1.08
5.43 4.26
106.81 110. 80
1 1
c 107 (\} c 8 100
ID !;') 105 1/J ·a :;_;: 104
103
102
101
100
99
100
BO
I
/ v
/ /'
/ ~ .... ~ v
Ill
',,, I I
"~' ~t'i~:: I
1",
-~ h= " ", I
' ~· ~.
"' I ~
I I
Number of Blows 25
/
/ A /
L/ l/ / ~ / ,v v VI / I// /
v
/// /v~'(;;..
v
C~ /
/I/
•u ~
/
,.,~ '" ~~
CLIENT: Titan Env.
UT-1
Moisture determination
1
Wt of Moisture added 100.00
Wt of soil & dish 384.26
Dry wt & dish 350.60
Net loss of moisture 33.66
Wt of dish (g) 8.01
Net wt of dry soil (g) 342.59
Moisture Content 9.83
Corrected Moisture Content
determination
Wt of soil & mold (lb) 14.20
Wt of mold (lb) 10.36
t wt of wet soil (lb) 3.84
t wt of dry soil (lb)
~·Y (pcf) 104.89
Corrected Dry Density (pct)
Volume Factor 30
DATE SAMPLED
DATE TESTED
2 3
150.00 250.00
291.42
251.40
38.31 40.02
8.34 8.31
347.27 243.09
11.03 16.46
14.49 14.68
10.36 10.36
4.13 4.32
3.71
111.59 111.28
30 30
JOB NO. 2234~04
RV
4 5
350.00 450.00
244.20 281.17
202.69 225.04
41.51 56.13
8.29 8.43
194.40 216.61
21.35 25.91
14.59 14.46
10.36 10.36
4.23 4.10
3.49 3.26
104.57
30 30
120
115
10
105
100
90
BORING
DEPTH
SAMPLE NO.
SOIL DESCR.
SURCHARGE
DATA
Wt. Soil &
Wt. (S) (g)
Wt. Soil (g)
Wet PCF
Wt. Wet Soil & Pan
Wt. Dry soil & Pan
Wt. Lost Moisture
Wt. of Pan
Wt. of Soil
Moisture
Dry
Max
Percent
ELAPSED
TIME
(MIN)
2599
1427
1440
1440
1440
1440
1469
1440
PERMEABILITY DETERMINATION
FALLING HEAD
FIXED WALL
UT-1
95% Mod Pt. OMC
BEFORE AFTER
TEST TEST
g) 386.9 404.5
93.0 93.0
293.9 311.4
122.3 120.5
) 302.4 319.9
(g) 266.2 266.2
( 36.2 53.B
( 8.5 8.5
(g) 257.7 257.7
% 14.l 20.9
107.2 99.7
113.5 113.5
94.4 87.8
BURETTE BURETTE
READING READING
hl (CC) h2 (CC)
0.2
10.8 10.8
14.2 14.2
16.8 16.8
18.6 18.6
20.2 20.2
2 . 2L6
23.0
24.4
SAMPLED
TEST STARTED
TEST FINISHED
SETUP NO. 1
PERCOLATION RATE
0.14 1.4E-07
0.09 8.4E-08
0.07 6.SE-08
0.05 4.6E-08
0.04 4.lE-08
.04
.04
.04
Rogers & Associates Engineering Corporation
C9600/9
Dear Ms.
Enclosed are the results from radium content, specific and radon
emanation and coefficient measurements that were performed on the
sample sent to our laboratory. We will be returning the sample within the month.
If you have any questions or if we can be of further
Sincerely, h ~ge~
Rogers & Associates Engineering Corporation
Radon Diffusion Specific
Moisture Density Coefficient Saturation Gravity
Sample ID (Dry Wt.%) (f?/cm3) (cm2/s) (Mp/P) (f?/cm3)
UT-1 14.5% 1.72 9.lE-03 0.89 2.39
RAE
Rogers & Associates Engineering Corporation
Date
Moisture Radon Emanation Radium-226
Sample ID (Drv Wt.%) Coefficient (pCi/e:) Comments
UT-1 14.6% 0.22 ±0.04 LS ±0.3
I
,: chen and associates, inc.
CONSULTING ENGINEERS
W{l L 100tCl.not4 M S. ZUNI DENVER, COLORADO 102:ZJ
[ H c; I HE ( 11 N' 1~4 EAST ARST STREET • CASPER, WYOMING llb-01 • )()7/2::µ_212i
Job No. 16,406
SECTION 2
Ext racted Data From
SOIL PROPERTY STUDY
EARTH LIHEO TAILINGS RETENTION CELLS
WHITE MESA URANIUM PROJECT
BLAND ING, UT AH
Prepa red for:
ENERGY FUELS NUCLEA~. INC.
PARK CENTRAL
1515 ARAPAHOE STREET
OEHVER, COLOR ADO 80202
July 18, 1978
TAl!lE I
SU~Y OF lABOAATOAY TEST ACSUlTS
P•9•
CRAOATION AXALYSIS H>'IOLCED HAM[ Al! I L rt
$pu f e So 11 K.a~ ,., ..... Pusln9 llo!Hvro I Gr.v t TyF"! Sl10 #200 0..111 ty Cont•nt
( cf (l
#16 ss ti,,, 16 s
I 6 #16 u
)) 8 )/4 In, S6 12 102. 22.
25 II !6 77
8 114 70
3/4 I 62
NP 1116 Sl
10 1J •ndy I ay
26 6 #16 6S
n lS es S9 I 9S,O I Ill, .6. 2
I) 118 84
#4 89
8 3/ll In. 65 I 27 I 10),4 I 0 2 1.
4 #8 S!!
2l 6 #16 70 109,9 lZ .4 o. l •yey
26 lO 114 . n
48 2!i #30 87 \Ju th.red
•yHon• 30 #JO 96 1ystone
9 II~ 57 c 4'f
20 9 VeHh• rod
I HOt\C 10 Ml In. 72 s cl •y ..
2 #16 59 S II t
:!) 6 #30 7l S.ndy Cl
''· s ,+1l 72 10.s
14 311! f n, 69 102. Ii
9 #B 64 27 I 015 4
TML£ I
SUlllVJl,Y or LA.!!OA~TOAY TEST AESULTS
~·9• ;
C~ADATIOH >HALYSIS IUl-\Ol0£0
Sp•cl c So /i..ll<li!iU'!I P11Hn9 Ltil th.on lbltt11r1 IVI Typ~ SI 10 llWJ tr Coottll! t, IU, (l)
)/8 In, 60 l•y
26 I 10 )/8 In, 73 l
22 S6
2 4 3/8 In, es I IS. 8 L
I II l )/8 In, 79
u 6 Hl6 76
9 I )/II In. 6)
25 !I Kl& 71 I I 2 ). l•y
21.1 5 lf8 SS
9 II~ . 64
21l 14 llJO 71 •y
28 13 1fl1 71 •y
)5 I 114 7S ty
l1 NI& 75
NP n, )!+
)0 I 14 116 68
NI' 1116 44 II SanJ I 13 NS 67 C ay
!+ Ii In, 46 CalcHeout
t. S It 8 1116 59 C ay
2S /{4 7S IJuthered
I 22 #16
l•yHone
!13 ayston•
TABLE 11
LABORATORY PERMEABILITY TEST
Su a ga Perm¢ 111 ty
Pressure
Ft r
11 l.6 16. 11 . Sx l
SI tv Cl.'!y l . I 22 .o 10 I
aystone .o 18. 3 911 500 . 6' I
Clay l 03 .11 18.0 97 5 . 2 , x IC
s 11 t I ,9 l 2. 4 91, 5 3.
s 1 l t I i 10.s , l. 5 93 . • x IC
I -•'l.J I 102.4 17.9 .
,_ " I 106.4 16.4 97 . l 7 l. l
I l Oli. 1 15.8 s 2' 3 l
105.2 13.9 95 . 3 . l
1 6E-08
2 3E~08
# ''-i
111
R OF G LIHITS
PERCENT ATTERBERG LIHI
PASSI HG LI qu Id Plastic Shrinkage s I E
• 200 Lim! t Lim! t Lim! t
SIEVE
I 17
y Cl I 33 25 I .62
C!av I 65 18 17. 5 I,
l I 23 17 18 ! •
one I 91 41 21 I 2 '
69 29 15 I 14 .
chen and a.ssocio.tes, inc.
CONSULT ING E N G INE E RS
SOit L fOVHOATIOH 9-6 S. ZUNI DENVER, COLOP.ADO 8022J
[HGIHEEl.IHG
SECTION 3
Extracted Data From
SOIL PROP::'.?.7X SJ:UDY
PROPJSED TAILil~GS RE'.i'ENTIQ~ CELL.S
hliITE MESA l..BN..:IL1·i PROJECT
BLANDING, UI'P.B
Prepared for:
~EffiY FUELS NUCLEAR, INC.
1515 ARAPP.-'-iOE SI'REET
D-:r-NER, CDLOrt;JXJ 80202
JOJ/7.U-7105
Jo~ r~. 1 7 , 130 January 23 , 1979
CHEN AND ASSOCIATES
TABLE I ,
ARY OF ORATORY T R
~"~~--i.----1-----I 1-----i-----
I I 4 -
20
13
18
16
~--I 1·------
35 p: ·---
_ _.._3_!_ 5 "' , __
10
-.:---~~~·+--~~·~---1--------i-------1--t::...---+--------~-------~-------~---~-· i------·--~i 2 I Li
2 6
·I I 1-
s
CliEN AND ASSOCIATES
TABLE I
M MARY OF LA RATORY R
12
33
22 I 6
'
3
-----I I I
110 20 ---10 ·-
22 6 -
I
25 6
E
CHEN AND ASSOCIATES
TABLE I
ARY OF LABORATORY TES R U I
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---~-_, __ _
• J
-----;-------1--------1---------1------· ·-
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p I LI f\
action
Dry Moisture % of ::iurcnn ty cat on Dens I ty Content l\STM Prnssura . Sc (p ) sf -
cl 100.2 j 9. lt
I
113. 8 11. 7 5 . . Pf n2
• 9 • 7 97
cl av r.;, 7 .3 5
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APPENDIXB
Radon Calculation
TITANEnvironmental
Results:
Determine the geotechnical and radiological properties of the tailings and cover
materials based on NRC-accepted methods and existing database values
previously collected. Input parameters into the computer modeling program
"RADON" to determine the radon flux values through the cover materials. A
variety of scenarios adjusting cover thicknesses were run to determine the
optimum thickness of cover materials to meet NRC specifications. It was
assumed that the tailings located in the three cells at the White Mesa Mill site
(Cells 2, 3, and 4A) have similar properties (Figure I). Therefore, cover layer
configurations as determined by the RADON model are applicable to the three
tailings cells.
A 2-Iayer uranium mill tailings cover composed of (from top to bottom) a 2-foot
layer of random fill and a I-foot compacted clay layer will meet NRC
specifications. In addition to the tailings cover materials, a minimum of 3 feet of
random fill will be placed between the tailings and soil cover to fill the currently
existing freeboard. This 3 foot layer was included for modeling purposes since it
will assist in reducing the radon flux from the tailings impoundments. This layer,
however, is not considered a part of the actual soil cover. The resulting radon flux
exiting the top cover layer of the tailings impoundment will be 13.6 pCi/m2/sec
(see Appendix Al for RADON output).
indicated in the "Effects of Freezing on Uranium Mill Tailings Covers
Calculation Brief' (6/l 6.8 of the top random fill cover layer \\'ill be
em~cte~a by that
TITANEnvironmental
Chkd
RADON model requires input of the following parameters
soil cover
layer thickness (centimeter (cm));
-porosity;
-mass density (g/cm\
radium activity (pCi/gr), source term, or ore grade percentage;
-emanation coefficient;
-weight percent moisture (long-term) (percent), and;
-diffusion coefficient (cm2/sec).
Physical and radiological properties for Tailings and Random Fill were analyzed by Chen
and Associates (1987) and Rogers and Associates (1988) respectively. See Appendix Bl
for analysis results. Clay physical data input for RADON modeling are included in
Appendix B2 and were analyzed by Advanced Terra Testing (1996) and Rogers and
Associates (1996).
The following cover profile was modeled.
Random fill (2')
Clay (1 ')
~-L-_L__:!:::____L__L_L_____:c__~--"' ,....,,,UV,LH fill (3 > min.)
\ \
TITANEnvironmental
Layer thicknesses
was assumed to be an
Guide 3.64, p. 3.64-5) a
equivalent infinitely thick source, The actual .UU.LH/''-' u.uvu.J.uv.Jv
is approximately 28 (850 cm), therefore, a
A minimum (91.5 cm) of random fill wiII cover to fill the freeboard
and bring the tailings piles up to the subgrade elevation of the soil cover. A 1 (30.5 cm)
layer of compacted clay covers the random fill with an additional 2 feet (61 cm) of random fill
overlying the clay layer. Adjusting for freeze/thaw conditions results in a (43 cm) random fill
layer overlaying the clay layer.
Porosity
Porosity is calculated from the specific gravity and dry bulk density according to the following
equations;
L Dry bulk density= ((specific gravity)(density of water)]/(! + e] (Ref.: Principles & Practice
of Civil Engineering, 1996, equation 14.5.6). See Appendix C.
2. Porosity= (e I (l+e)] x 100 (Ref.: Principles & Practice of Civil Engineering, 1996, equation
14.5.4). See Appendix
Max.Dry
Density
(lb/ft3)
104.0
Bulk Dry
Density
(lb/ft3) (l)
98.8
Specific
Gravity
Density of
Water (1b/ft3)
porosity
(3)
TITANEnvironmental
Mass Density
Appendix
Random Fill
Radium Activity, Source Term, or Ore Grade %
Radium activity values from Rogers & Associates (1988 and 1996), were input for White Mesa
tailings and cover materials (Appendix B 1 and B2). The radium activity values are:
Tailings 981 pCi/gm
Clay 1.5 pCi/gm
Random Fill = 1.9 pCi/gm.
Emanation Coefficient
Emanation coefficient input for the tailings and cover materials are measured values from Rogers
& Associates (1988 and 1996), included in Appendix Bl and B2. The coefficients are:
Tailings = 0.19
Clay = 0.22
Random Fill = 0.19
Note: Use ofNRC's default value of E=0.35 is not considered appropriate since laboratory
analyses of emanation coefficients are available.
Weight Percent Moisture
TITANEnvironmental
By
Chkd
source is believed to be of better quality. percent
fill were the of Capillary
included in Appendix BI Weight "'"''""''n't
Diffusion Coefficient
Clay
Random Fill
6%
= 14.1%
9.8%
Diffusion coefficient input for the tailings and cover materials are measured values from Rogers
& Associates (1988 and 1996), included in Appendix Bl and B2. The coefficients used for
tailings and random fill were an average of the nvo values presented. The coefficients for each
material are as follows:
References:
Tailings
Clay
Random Fill
0.0142 cm2/sec
= 0.0091 cm2/sec
= 0.0082 cm2/sec
Advanced Terra Testing, 1996, Physical soil data, White Mesa Project, Blanding Utah, July 25,
1996.
Chen and Associates, 1987. Physical soil data, White Mesa Project Blanding Utah.
Freeze R. Allan and Cherry, John A, 1979, "Groundwater".
1
CELL 1-I
CELL 2
l WHITE MESA PROJECT
SITED RA INA GE
Ff <i u R..E. : [
1
--1
I
' l . l
'
f
l l I
TITANEnvi
By
Chkd
ental
Appendix Al
Vers
us.
*****! RADON !*****-
RADON FLUX, CONCENTRATION AND TAILINGS COVER THICKNESS
OF THIS RUN
09-10-1996/18 06: 3
EFN WHITE MESA
CONSTANTS
DECAY CONSTANT
PARTITION COEFFICIENT
GRAVITY OF COVER & TAILINGS
GENERAL INPUT PARAMETERS
LAYERS OF COVER AND TAILINGS
DESIRED RADON FLUX LIMIT
LAYER THICKNESS NOT OPTIMIZED
DEFAULT SURFACE RADON CONCENTRATION
RADON FLUX INTO LAYER 1
SURFACE FLUX PRECISION
LAYER 1
THICKNESS
POROSITY
LAYER INPUT PARAMETERS
TAILINGS
MEASURED MASS DENSITY
MEASURED RADIUM ACTIVITY
MEASURED EMANATION COEFFICIENT
CALCULATED SOURCE TERM CONCENTRATION
WEIGHT % MOISTURE
MOISTURE SATURATION FRACTION
MEASURED DIFFUS COEFFICIEN'r
.0000021
.26
2.65
4
20
0
0
.001
500
.44
1.45
981
.19
l.290D-03
6
198
1
A 2 m
pCi lA l
pCi A -2 m A -2 m
cm
g cm"-3
pCi/gA-1
A l s
A -1 s
A -1 s
LAYER
l{ICKNESS
ROSI TY
CLAY (UT-1)
URED MASS DENSITY
MEASURED RADIUM ACTIVITY
MEASURED EMANATION COEFFICIENT
CALCULATED SOURCE TERM CONCENTRATION
WEIGHT % MOISTURE
MOISTURE SATURATION FRACTION
MEASURED DIFFUSION COEFFICIENT
LAYER 4 RANDOM FILL
POROSITY
MEASURED MASS DENSITY
MEASURED RADIUM ACTIVITY
MEASURED EMANATION COEFFICIENT
CALCULATED SOURCE TERM CONCENTRATION
WEIGHT % MOISTURE
MOISTURE SATURATION FRACTION
MEASURED DIFFUSION COEFFICIENT
30.S
. 8
1. 72
1.5
. 2
4.2 7D 06
14.1
.866
.0091
cm
61 cm
.315
1.85 g -3
1
1.9 pCi/gA-1
.19
3 A_l
4.452D-06 cmA 3
9.800000000000001
.576
8.200000000000001D-03
DATA SENT TO THE FILE 'RNDATA' ON DEFAULT DRIVE
N FOl CNl I COST CRITJ ACC
4 O.OOOD+OO O.OOOD+OO 0 2.000D+Ol l.OOOD-03
LAYER DX D p Q XMS RHO
1 5.000D+02 1 .420D-02 4.400D-01 l.290D-03 l.977D-01 1.450
2 9.150D+Ol 8.200D-03 3.150D-01 4.452D-06 5.756D-01 1.850
3 3.0SOD+Ol 9.lOOD-03 2 800D-01 4 257D-06 8.661D-01 1.720
4 6.lOOD+Ol 200D-03 3.lSOD-01 4 452D-0 5.756D-01 1.850
cmA2 -1
BARE SOURCE FLUX FROM LAYER 1: 4.667D+O A
RESULTS OF THE RADON DIFFUSION CALCUh~TIONS
LAYER THICKNESS EXIT FLUX EXIT CONC.
( 2 -) ( -1}
1 S.OOOD+02 1.233D+02 .519D+05
2 9.lSOD+Ol 2.562D+Ol 7.892D+04
3 3.0SOD+Ol 1.962D+Ol 2.276D+04
4 6.lOOD+Ol 1.361D+Ol O.OOOD+OO
Appendix A2
Ve rs
U.S.
-**** ! RADON !*****-
RADON FLUX, CONCENTRATION AND TAILINGS
OF THIS RUN
09 10-1996 :4 :
)492 000
THICKNESS
EFN -WHITE MESA FOR CONDITIONS)
CONSTANTS
DECAY CONSTANT
PARTITION COEFFICIENT
GRAVITY OF COVER & TAILINGS
GENERAL INPUT PARAMETERS
LAYERS OF COVER AND TAILINGS
DESIRED RADON FLUX LIMIT
LAYER THICKNESS NOT OPTIMIZED
DEFAULT SURFACE RADON CONCENTRATION
RADON FLUX INTO LAYER 1
SURFACE FLUX PRECISION
LAYER 1
THICKNESS
POROSITY
LAYER INPUT PARAMETERS
TAILINGS
MEASURED MASS DENSITY
MEASURED RADIUM ACTIVITY
MEASURED EMANATION COEFFICIENT
CALCULATED SOURCE TERM CONCENTRATION
WEIGHT % MOISTURE
MOISTURE SATURATION FRACTION
MEASURED
.0000021
.26
2.65
4
20
0
0
.001
500
.44
1.45
981
.19
1. 290D
6
.19
pCi A -2 m
l"-1
A -2 m
A -2 m
cm
g -3
pCi/g"-1
%
A 1 s
A 1 s
-1
LAYER 3
ICKNESS
.~OSITY
CLAY
SURED MASS DENSITY
MEASURED RADIUM ACTIVITY
MEASURED EMANATION COEFFICIENT
CALCULATED SOURCE TERM CONCENTRATION
WEIGHT % MOISTURE
MOISTURE SATURATION FRACTION
LAYER 4
THICKNESS
POROSITY
DIFFUSION COEFFICIENT
RANDOM FILL
MEASURED MASS DENSITY
MEASURED RADIUM ACTIVITY
MEASURED EMANATION COEFFICIENT
CALCULATED SOURCE TERM CONCENTRATION
WEIGHT % MOISTURE
MOISTURE SATURATION FRACTION
MEASURED DIFFUSION COEFFICIENT
0.5
.28
1 72
1.5
.22
4.257D-0
14.1
.866
.0091
43
.315
1. 85
1.9
.19
cm
g cmA-3
pCi/gA 1
4.452D-06 pCi cmA 3
9.800000000000001
.576
8.200000000000001D-03
DATA SENT TO THE FILE 'RNDATA' ON DEFAULT DRIVE
N FOl CNl I COST CRITJ ACC
4 O.OOOD+OO O.OOOD+OO 0 2.000D+Ol 1.000D-03
LAYER DX D p Q XMS RHO
1 5.000D+02 1.420D-02 4.400D-01 1. 290D-03 1.977D-01 1.450
2 9.150D+Ol 8 200D-03 3 150D-01 4.452D-06 5.756D-01 1.850
3 3.050D+Ol 9.lOOD-03 2 800D-01 .257D-06 8 661D-01 1 720
4 4.300D+Ol 200D-03 3.150D-Ol 4 452D-06 5.756D-01 1. 0
BARE SOURCE FLUX FROM LAYER 1: .667D+02
RESULTS THE RADON DIFFUSION CALCULATIONS
LAYER
1
2
3
4
THICKNESS
(
5.000D+02
9.lSOD+Ol
3 OSOD+Ol
4.300D+Ol
EXIT FLUX
2 SA-1}
l.237D+02
2.679D+Ol
2.123D+Ol
1.756D+Ol
EXIT CONC.
l"-1)
4.514D+05
7 622D+04
l.944D+04
O.OOOD+OO
Appendix Bl
Physical Properties of Tailings
and
Proposed Cover Materials
Atterberg % Passing Maximum
Specific No. 200 Dry Density
Material Type Gravity (pcf)
Tailings 28 6 2.85 46 104.0
Random Fill 22 7 2.67 48 120.2
Clay 29 14 2.69 56 121.3
Clay 36 19 2.75 68 108.7
Note: Physical i1 Chen and Associates (1987).
Optimum
Moisture
Content
18.1
11.8
12.1
18.5
A Rogers & Associates Engineering Corporation
Mr. C.O.Seaiy
Umetco Minerals Corporation
P .0. Box 1029
Grand Junction, CO 81502
Dear Hr. Sea 1 y:
Post Office Box 330
Salt Lake City, Utah 84110
263-1600
March 4, 1
C8700/22
We have completed the tests ordered on the four samples shipped to JS.
The re~ults are as follows:
Radium Emanation Diffusion 3 {g/cm )
Sam;ile pCi/gm Fraction Coe·ffic. Oensi Moisture Saturation
Tailings 981±4 0.19±0.01 2.0E-02 1.45 13.2 0.39
8.4£-03 1.44 19.l 0.56
Composite (2,3,&5) l.6E-02 1.85 6.5 0.40
4.SE-04 1.84 12.5 0.75
Site fJ1 1.6E-02 l.85 8.1 0.48
1.4E-03 1.84 12.6 0.76
Site 114 l.lE-02 l.65 15.4 0.63
4. 2E-04 1.65 19.3 0.80
The samples will be shipped back to you in the next few weeks. If you have
any questions regarding the results on the samples please feel free to call.
Sincerely.
Utah 84107
R
A
E
Rogers & Associates Engineering Corporation
Mr. C.O. Sealy
UMETCO Minerals Corporation
P .0. Box 1029
Grand Junction. CO 81502
Dear Mr. Sealy:
Post Office Box 330
Salt Lake City, Utah 84110
[phone]
May 9, 1988
C8700/22
The tests for radium content and radon emanation coefficient in the
following samples have been completed and the results are as follows:
Sample
Random {2.3 & 5)
Site 1
Site 4
Radium (pCi/g)
1.9 + 0.1
2.2 + 0.1
2.0 + 0.1
Radon
Emanation Coefficient
0.19 + 0.04
0.20 + 0.03
0.11 + 0.04
If you have any questions regarding these results please feel free to
call Dr. Kirk Nielson or me.
ncerely.
Utah 84!07
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16
SUMMARY OF CAPILLARY MOISTURE
R~LATIONSHIP TEST RESULTS
WHITE MESA PROJEC T
DATA FROM CHEN & ASSOCIATES; . ~
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12 ·-·: ................ , ....................................... , ............................................................ .. : : : : : : : : : : : .. : :·elf: :MATE·R·il"'"L .. : ... : ... : ... : ... : .. ·:· .. :· .. 1" .. :··: ... : ... : .. ·:··: ... : .. :··: ...
....... l ·~s·1r · . w . . .. ":0C-: : :f : : : : . ,,.1 ; : : : : -: : : : : : : : I .: : : .... : :
I • • • • • • • • • I . ' ' ' . ' . . . . . . . . . I . . . . . . . . . .
' ' ' ' ' ' t t • • f I ' ' • '
O t t 0 0 I 0 O 0 t O • • • • • • • • • • . • •
1
I t 0 0 .. ' . ' . ' ' · ,0. \c
••••••••• ( f ,··-·~·/· •••
• • • • • 1 , • t I • • • • • • t , • J • , t , , , , , , J , , , , • , , , ......... I . . . . . . ' . f .. ' ' ... ' . I I •••••••• : ............... '. ....... -..................... ! ............... .
• ' t ••• I '
1 o !· .. : ... : ... : ... : ... : ... : ... : .. ·:-~ ... • ... : .. ·:· .. :· .. :· .. :· .. :· .. : ... : ... : ...... : ... : ... :-·: ... ~ .. :-·:-·:··:·-... ~··:-:··:~"'. . 1' ·· •...•• '."·:· .. :· .. :· .. ~·· .. :··:··:·--: .. ·~··:·-~·
1 -• .1 u.n
< • ' > l • t ' < 0 ' I t t f t I 0 • ' 0 0 0 I • 0 f 0 0 I t 0 t I t I f I t O O t I t I • • I t t I •, t I • t • t • • • l • • , , , '"-J, • 1 •
> I o + • I O • • ' ' • • f ' O t • < t I ' f o O • t I I t I t f t t t I t t, t o I t t ' t t t o l t o o t o o t t t o ' t • , , t • o 0 l . . . . . . . . . . . . . . . . . . . . . . . . . . . ' . . . . . . . . . . . RAN ·o M Fl,. L · · .. · · · · · · · · · · · · · · ·
• • t • • ' • • t • ' 1 • t • O I 1 • • t t O t • t t t t • f t t f I I • O o • I • • • • l.. : o I t o O ! t O • • • t 1 • ._ < , ,
: : : : : : : : : : : : : : : : .: : : : : : : : : : : : : : : : : : : : : : : : : S:IT E :+. 2; :3:, : & 5 : : : : : : : : : : : : : : : : :
a : : : : :_: : : : : : : : : : : : : : : : : : : : : : : : : : : : : : :. : : : : : : : : : : .: : : : : : : : : : : : : : : : : I : : : : ; : : : :
0 2 4 6 8 10 12 14 \', 16
TENSION, BAR
FIGURE 4.4-1
SUMMARY OF CAPILLARY MOISTURE
RELATIONSHIP TEST RESULTS
WHITE MESA PROJECT
DATA FROM CHE N & ASSOC IATES
I 0: .p.
I
. ~y':) ,J
:1;
Appendix B2
~~ADVAHCcD RR~ tt
ATTERBERG LIMITS TEST
ASTM D 4318
CLIENT Titan Env.
BORING NO.
DEPTH
SAMPLE NO.
SOIL DESCR.
TEST TYPE
UT-1
Plastic Limit
Determination
Wt Dish & Wet Soil
Wt Dish & Dry Soil
Wt of Moisture
Wt of Dish
wt of Dry Soil
Moisture Content
ATTERBERG
l
3.34
2.96
0.38
1.05
1.91
19.90
Liquid Limit
Determination
Device Number
Number of Blows
Wt Dish & Wet soil
Wt Dish & Dry Soil
Wt of Moisture
Wt of Dish
Wt of Dry Soil
Moisture Content
Liquid Limit
Plastic Limit
Plasticity Index
103.l
19.9
83.3
Classification CH
1
39
12.18
6.64
5.54
1.10
5.54
100.00
2
4.06
3.57
0.49
1.11
2.46
19.92
0258
2
27
10.42
5.67
4.75
1.06
4.61
103.04
3
3.42
3.03
0.39
1.06
1.97
19.80
3
18
10.92
5.87
5.05
1.06
4.81
104.99
JOB NO.
DATE SAMPLED
DATE TESTED
4
14
12.33
6.53
5.80
1.10
5.43
106.81
2234-04
7-25-96
5
9
10.06
5.34
4. 72
1.08
4.26
110.80
Atterberg Limits, Flow Curve
.• UT-1
112 _, --
111 •
110 "' ~-·""
109 I'"" ,,
"" ~ 108
' ·~ c 107 ID
~ c 8 106
"" '
<LI 2 105
VI "' "" ~ 104
103 '-~
102 ~
101 '~ 100 ""' 99
Number of Blows 25
PLASTICITY CHART
•• UT-1
100 /
/ .4 /
/ v / ~· /
80
// -· ,,. / OH v I / /
/ /~"\~
/ or C ~/ v
/ / v
/ • " i L "'i •
/ ~/ ,,_ ~· v~ / C14!l ! ~
/
CLIENT:
.BORING NO.
EPTH
AMPLE NO.
Titan Env.
UT-1
Moisture determination
Wt of Moisture added (ml)
Wt of soil & dish (g)
Dry wt. soil & dish (g)
Net loss of moisture (g)
WI. of dish (g)
Net wt. of dry soil (g)
Moisture Content(%)
Corrected Moisture Content
Density determination
Wt of soil & mold (lb)
Wt of mold (lb}
Net wt. of wet soil (lb)
wt of dry soil (lb)
y Density, (pcf)
Corrected Dry Density (pcf)
Volume Factor
C JPACTION
ASTM D 1557 A
1
100.00
384.26
350.60
33.66
8.01
342.59
9.83
14.20
10.36
3.84
3.50
104.89
30
SOILDESCR.
DATE SAMPLED
DATE TESTED
2 3
150.00 250.00
393.92 291.42
355.61 251.40
38.31 40.02
8.34 8.31
347.27 243.09
11.03 16.46
14.49 14.68
10.36 10.36
4.13 4.32
3.72 3.71
111.59 111.28
30 30
JOB NO. 2234-04
7-25-96 RV
4 s
350.00 450.00
244.20 281.17
202.69 225.04
41.51 56.13
8.29 8.43
194.40 216.61
21.35 25.91
14.59 14.46
10.36 10;36
4.23 4.10
3.49 3.26
104.57 97.69
30 30
>. :!:::'.'. IJ) c
(j)
140
135
130
125
120
115
0 110 c 0
105
100
95
90
85
~-
,,_
~
~
,_,,,
-
,__
r"
r-o I
-
-l
0
\
\
\
\
I\ Zero Air Voids CUI Ve
~ 3<.heportedire pvvv ~\ ....
~
( ~\ ~
/® ~~
I ~ ~
~
I I I
CLIENT
FALLING HEAD
FIXED WALL
Titan Environmental
DETERMINATION
JOB NO. 2234-04
SAMPLED
TEST STARTED
BORING NO.
DEPTH
SAMPLE NO.
SOIL DESCR.
SURCHARGE
IJT-1 TEST FINISHED
Remolded 95% Mod Pt. @ OMC SETUP NO.
200
DATA
Wt. Soil &: (S) (g)
Wt. Rlng(s) (g)
Wt. Soil (g)
Wet PCF
Wt. Wet Soil &: Pan (g)
Wt Dry Soil &: Pan (g)
Wt. Lost Moisture (g)
Wt. of Pan Only (g)
Wt. of Dry Soil (g)
Moisture Content %
Dry Density PCF
Max. Dry Density PCF
Percent Compaction
ELAPSED BURETTE
TIME READING
(MIN) hl (CC)
0.2
2599 10.8
1427 14.2
1440 16.8
1440 18.6
1440 20.2
1440 21.6
1469 23.0
1440
BEFORE
TEST
386.9
93.0
293.9
122.3
302.4
266.2
36.2
8.5
257.7
14.1
107.2
113.5
94.4
BURETTE
READING
h2 (CC)
10.8
14.2
16.8
18.6
20.2
21.6
23.0
24.4
AFTER
TEST
404.5
93.0
311.4
120.5
319.9
266.2
53.8
8.5
257.7
20.9
99.7
113.5
87.8
PERCOLATION RATE
FT/YEAR CM/SEC
0.14 1.4E-07/
0.09 8.4E-08
0.07 6.5E-08
0.05 4.6E-08
0.04 4.lE-08
0.04 3.7E-08
0.04 3.6E-0~
0.04 3.
7-28-96 CAL
8-7-96 CAL
1
-
Rogers & Associates Engineering Corporation
REPORT OF RADON DIFFUSION COEFFICIENT MEASUREMr;NT8
(TfME·DEPENt>ENT DIFFUSfON TEST METHOD RAE-SQAP-3.6}
Radon Diffwdon
Moisture Density Coefficient
Sample ID (Dry Wt.%) (~cm3) (cm2/•)
UT-1 14.lS% 1.72 9.lE-03
-~
Rcpon IJ:itc:. tJ{3/l}6
Conlract: (."f}6f!Jf)
Dy: . .J.J£R
Date Rcc..·civcd: 819§.
Specific
Saturation Gravity
(Mn/P) (g/cm:.S)
0.89 2.39
--~ ·--
-
-~ ..
·-
.
·-
. --
-
RAE
Poat Ottice Box 330
Bait Lake • Utah 84110
Rogers & Associates Engineering Corporation
... ~-ID
lJf-1
REPORT OF RADIUM CONTENT AND EMANATION
COEFFICIENT MEASUREMENTS
(LAB PROCEDURE RAE-SQAP-3.1)
Moisture Radon Emanation
(Dry Wt.%} Coentclent
14.6% o.n±o.04
.
Report Date: 9lJt;JJJ
Comrnc.1: ___ ('<)<:IJJf)
By:---~·
Date Received: __ . 8f.16
--Radium-226
foCi/e) Cotnment~
l.5 ±0.3
.
-
~"'4~
.-
.
~
-~
RAE
Appendix C
•,
.. from the Professors who know it best ...
PRINCIPLES & PRACTICE OF
CIVIL ENGINEERING
-2nd Edition-
The most efficient and authoritative review book
for the PE License Exam
Editor: MERLE C. POITER, PhD, PE
Professor, Michigan State University
Authors: Mackenzie L. Davis, PhD, PE ! Richard W. Furlong, PhD, PE
David A. Hamilton, MS,. PE
Ronald Harichandran, PhD, PE
Thomas L. Maleck, PhD, PE
George E. Mase, PhD
Merle C. Potter, PhD, PE
David C. Wiggert, PhD ,PE
Thomas F. Wolff, PhD, PE
Water Quality
Structures
Hydrology
Structures
Transportation
Mechanics
Fluid Mechanics
Hydraulics
Soils
The authors are professors at Michigan State University, w ith
the exception of R. W. Furlong, who teaches at the University of
Texas at Austin and D. A. Hamilton who is employed by the
M ichigan Department of Natural Resources.
published b y:
GREAT LAKES PRESS
P.O . Box 483
Okemos, MI 48805-0483
i\j 52
14-8 Soil Mechanics
14.5 Other Useful Equations for Weight-Volume
Problems
It is strongly reconunended that weight-volwne problems be solved using phase diagrams rather
than only formulas, as completing a phase diagram dearly indicates whether sufficient information is
known to complete the problem, whether information is insufficient and assumptions must be made, or
whether too much information is present and the problem is overconstrained. For example, it may not be
immediately apparent from the information given whether a soil is saturated until all quantities are calcu-
lated. Nevertheless, following are given additional useful equations that may be used to solve certain
classes of weight-volume problems.
and
A very useful equation relating four different quantities is
Se=wGs
For saturated soils (S = 100"/o) there results
e=wGs
The relationships between the void ratio and porosity are
The total unit weight can be obtained as
n e=--l-n
e n=--· l+e
(G +Se)r r= ! IO l+e
The·d.ry unit weight can be obtained as
(l+w)r'°
w/S+I/G5
Rework example 14.6 using equations introduced in this section.
(14.5.1)
(14.5.2)
(14.5.3)
(14.SA)
(14.5.5)
fJ < Or-'i ~k. ~~1
bs ·. ::fu; h'-~v~IZs.6)
Y 1.-J -. b_t.,,<;·i~ o+ ~v
Solution..
S = wG/e = (.20)(265)/(0.800) = 0.6625 or 66.3%
e 0.800
n = l+e == l+0.800 =0.444
r= (l+wlrw = (1.20)(62.4) =110.2 Jb/ft3
w/S +l/Gs 0.2/0.6625 +1/2.65
r = Gsrw ""(2_65)(62.4}=9L9 lb/ft3
d 1 + e 1+0.800
APPENDIXD
HELP Model
TITANEnvironmental
By IAM_ Date~. Subject ~E~FN~· ~-~W~h~it~e~f\~1e~s~a ________ Page_J_of 34
Chkd By-tm-Date~ Help Model Proj No 611 J-001
Purpose:
Method:
Results:
To determine the required soil cover thicknesses to minimize surface water
infiltration through the White Mesa tailings impoundments so that precipitation
will not fully penetrate the soil cover. The White Mesa Mill site is located in
Blanding, Utah. The performance of the tailings cover was evaluated using the
Hydrologic Evaluation of Landfill Performance (HELP) Model. The HELP
model was developed to facilitate rapid, economical estimation of the amounts of
surface runoff, subsurface drainage, and leachate that may be expected to result
from the operation of a wide variety of possible cover designs.
Determine the soil properties of the cover materials and climatic properties of
Blanding, Utah based on existing database values previously collected, and
acceptable default parameters. Input parameters into the computer modeling
program "HELP" to determine the percolation through the cover materials. A
variety of scenarios adjusting cover thicknesses were run to determine the
optimum thicknesses of cover materials to eliminate percolation through the
bottom cover layer. The modeled tailings cover consists of a compacted clay
layer over the tailings, with a random fill soil layer covering the clay.
The model was developed for Cell 3 at the White Mesa Mill since it is the largest
of the three cells to be covered (Cells 2, 3, and 4A). Figure I shows the location
of the cells. The cover requirements determined for Cell 3 will be applied to the
remaining cells as well. This is a conservative approach since the remaining cells
are smaller in size and require less time and distance for precipitation runoff.
A two-layer uranium mill tailings cover composed of a 2-foot layer of random fill
over a I-foot compacted clay layer will reduce percolation into the tailings
material to a negligible quantity (see Appendix A for HELP results). As indicated
by the model results, precipitation will either runoff the soil cover or be
evaporated.
The cover thicknesses recommended above were also determined to be the
minimum thickness requirements for \Vhite Mesa tailings covers based on results
from radon flux calculations (see "Calculation of Radon Flux from the \\/hite
Mesa Tailings Cover", 9/11/96). As indicated in the Radon Flux calculation, to
restrict radon flux to 20 pCi/m2/sec, (Regulatory Guide 3.64), a cover consisting
of 2-feet random fill and !-foot compacted clay is required.
TITANEnvironmental
By TAM Date 9/11/96 Subject ~EEN~·~-~W~h=i=te~lv~1e=s=a _________ Page 2-of 3'-J
Chkd By-Date qhl1\qld Help Model Proj No 6111-001
Parameters: The HELP model requires input of the following parameters for the cover
materials:
Weather Data
-Weather Data:
Evapotranspiration
Preeipitation
Temperature
Solar Radiation
-Soil and Design Data:
Landfill area (area ofCell 3)
Pereent of area where runoff is possible
Moisture content initialization
-Cover Layer Data:
Layer type
Default soil/material texture number
Runoff curve number
Evapotranspiration and solar radiation data was input using the default parameters from Grand
Junction, Colorado. Grand Junction is located north east of Blanding Utah in a similar climate
and elevation. The elevation at Grand Junction is 4,600 feet and the elevation at Blanding Utah
is 5,600 feet. Figure 1 in Appendix B shows the locations of Blanding and Grand Junction in
relation to one another.
Precipitation data from 1988 to 1993 (skipping 1989) was obtained from Utah State University
(sec Appendix C). Daily precipitation values for the five years were input manually into the
HELP model. Temperature data was obtained from the Dames & Moore (1978) and is also
included in Appendix C. Daily temperature data was not available for manual entry therefore.
the computer calculated mean monthly temperatures based on the default location (Grand
Junction, Colorado). These values were then edited to match the actual mean monthly
temperatures for Blanding, Utah.
TITANEnvironmental
By TAM Date~. Subject
Chkd By J.l1L Date~
Soil and Design Data
EFN -White Mesa Page~of 3'f
H=el"'p~M~o=d=e~I ___________ Proj No 6111-001
The surface area of Cell 3 at the White Mesa Mill, Blanding, Utah was used for the landfill area
value. The surface area, as indicated on Figure I, is 78.7 acres. It was assumed that runoff was
possible over I 00% of this area and that no rain would sit on the tailings cover.
Cover Layer Data
Layer Thickness·
A two-layer cover over approximately 28 feet of uranium mill tailings was used to run the HELP
model. Actual cover thicknesses which would be constructed on site consist of2-feet of random
fill over a I-foot compacted clay layer. This cover profile was adjusted for modeling purposes to
account for freezing and thawing conditions. As indicated in the "Effects of Freezing on
Uranium Mill Tailings Covers Calculation Brief' (6/17/96), 6.8 inches of the top random fill
cover layer will be effected by freeze/thaw conditions at Blanding, Utah. This suggests that 6.8
inches of the top layer may not contribute to reductions of infiltration into the tailings piles. To
conservatively compensate for effects from freezing and thawing, 6.8 inches were subtracted
from the top random fill cover layer. Therefore, modeled layer thicknesses consisted of 17 .2
inches of random fill over 12 inches of clay.
Layer T'yve .·
The random fill soil layer was classified as a vertical percolation layer. Vertical percolation
layers are composed of moderate to high permeability material that drains vertically, primarily as
unsaturated flow. The clay layer was classified as a barrier soil liner. This material consists of
low permeability soil designed to limit percolation/leakage and drains only vertically as a
saturated flow.
Moisture Storage Parameters.·
Required moisture storage parameters such as; porosity, field capacity, wilting point, initial soil
water content, and permeability, are interrelated with the exception of permeability. The porosity
must be greater than zero but less than l. The field capacity must be between zero and 1 but
must be smaller than the porosity. The wilting point must be greater than zero but less than the
field capacity, and the initial moisture content must be greater than or equal to the wilting point
and less than or equal to the porosity (U.S. EPA, 1994).
Based on these relations, actual measured porosity and permeability values were input for
random fill (Chen and Associates, 1987) and clay (Advanced Terra Testing, 1996, sample UT-I).
See Appendix D for physical property data. In addition, wilting point data for the layers was set
,_--\efy, . .,Ute\hclp)_<:k [5/H/%1
TITANEnvironmental
By TAM Date 9/l l/96 Subject _E~'FN~--~W~h~it~e~f\~1e~s=a _________ Page~of 34
Chkd By~ Date ~jlv\q1p -1k!Jl Model Proj No 6111-001
equal to the long-term moisture content of the materials and the soil water content was adjusted
to equal the optimum moisture content. Field capacity values just less than the porosity's were
assumed to maintain the interrelationship of the parameters.
Run<<ffCurye Number
The runoff curve number was calculated by the HELP model based on a minimum surface slope
of 0 .2%, slope length of 1,200 feet, soil texture of the top layer, and vegetation. A slope length
of 1,200 feet was assumed to be the maximum distance which precipitation would travel over the
soil cover. The top layer on the tailings cover will be minimum 3" of rock riprap (sandstone)
therefore, no vegetation will exist. 1bis top layer, however, was not included in the model to
determine percolation quantities.
References:
Advanced Terra Testing, 1996, Physical soil data, White Mesa Project, Blanding Utah, July 25,
1996.
Chen and Associates, 1987. Physical soil data, White Mesa Project, Blanding, Utah.
Dames & Moore, 1978. "Environmental Report, White Mesa Uranium Project, San Juan County
Utah'', January 20, 1978, revised May 15, 1978.
Principles & Practice of Civil Engineering, 2nd Edition, 1996
U.S. Environmental Protection Agency (EPA), 1994. "The Hydrologic Evaluation of Landfill
Performance (HELP) Model", September, 1994.
Utah Climate Center, Utah State University, Daily Precipitation Values, Station #42073807,
Blanding, Utah, January 1988 through December 1993.
CELL 1-I
,J
r
CELL 2 /
I ,l
WH!1[ MESA p ROJECT
SITE ~ DFlAINAGE
Fl<jUI\£: {
--,-
. ! i
(
TITANEnviromnental
By TAM_ Date~ .. Subject ~E~FN~--Wh~i=te~M~es=a ________ Page~or-2'.L
Chkd By~ Date~ Help Model Proj No 611 l-001
Appendix A
******************************************************************************
*******************************************~**********************************
** **
k
**
**
**
**
** **
HYDROLOGIC EVALUATION OF LANDFILL PERFORMANCE
HELP MODEL VERSION 3.01 (14 OCTOBER 1994)
DEVELOPED BY ENVIRONMENTAL LABORATORY
USAE WATERWAYS EXPERIMENT STATION
FOR USEPA RISK REDUCTION ENGINEERING LABORATORY
**
**
**
**
** **
**
**
**
******************************************************************************
******************************************************************************
PRECIPITATION DATA FILE: C:\HELP3\PRECIP.D4
C:\HELP3\TEMP2.D7
C:\HELP3\SOLAR.Dl3
C:\HELP3\EVAP.Dll
C:\HELP3\efn-fin2.Dl0
C:\HELP3\efn-fin2.0UT
TEMPERATURE DATA FILE:
SOLAR RADIATION DATA FILE:
EVAPOTRANSPIRATION DATA:
SOIL AND DESIGN DATA FILE:
OUTPUT DATA FILE:
TIME: 14: 9 DATE: 9/11/1996
-*****************************************************************************
TITLE: EFN -White Mesa
******************************************************************************
NOTE: INITIAL MOISTURE CONTENT OF THE LAYERS AND SNOW WATER
WERE SPECIFIED BY THE USER.
LAYER 1
TYPE 1 -VERTICAL PERCOLATION LAYER
MATERIAL TEXTURE NUMBER 88
THICKNESS 17.20 INCHES
POROSITY 0.3150 VOL/VOL
FIELD CAPACITY 0.3140 VOL/VOL
WILTING POINT 0 0980 VOL/VOL
INITIAL SOIL WATER CONTENT 0.1180 VOL/VOL
EFFECTIVE SAT. HYD. COND. 0.886999999000E-06 CM/SEC
LAYER 2
THICKNESS
POROSITY
FIELD CAPACITY
WILTING POINT
TYPE 3 -BARRIER
MATERIAL TEXTIJRE
INITIAL SOIL WATER CONTENT ~
EFFECTIVE SAT. HYD. COND.
SOIL LINER
NUMBER 89
12.00 INCHES
0. 2800 VOL/VOL
0.2799 VOL/VOL
0.1410 VOL/VOL
0.2800 VOL/VOL
0.369999995000E-07 CM/SEC
GENERAL DESIGN AND EVAPORATIVE ZONE DATA
NOTE: SCS RUNOFF CURVE NUMBER WAS COMPUTED FROM DEFAULT
SOIL DATA BASE USING SOIL TEXTURE #27 WITH BARE
GROUND CONDITIONS, A SURFACE SLOPE OF 0.% AND
A SLOPE LENGTH OF 1200. FEET.
SCS RUNOFF CURVE NUMBER
FRACTION OF AREA ALLOWING RUNOFF
AREA PROJECTED ON HORIZONTAL PLANE
EVAPORATIVE ZONE DEPTH
INITIAL WATER IN EVAPORATIVE ZONE
UPPER LIMIT OF EVAPORATIVE STORAGE
LOWER LIMIT OF EVAPORATIVE STORAGE
INITIAL SNOW WATER
INITIAL WATER IN LAYER MATERIALS
TOTAL INITIAL WATER
TOTAL SUBSURFACE INFLOW
96.40
100.0
78.700
17.2
2.030
5.418
1.686
0.000
5.390
5.390
0.00
PERCENT
ACRES
INCHES
INCHES
INCHES
INCHES
INCHES
INCHES
INCHES
INCHES/YEAR
EVAPOTRANSPIRATION AND WEATHER DATA
NOTE: EVAPOTRANSPIRATION DATA WAS OBTAINED FROM
GRAND JUNCTION COLOR.11.DO
MAXIMUM LEAF AREA INDEX 0.00
START OF GROWING SEASON (JULIAN DATE) 109
END OF GROWING SEASON (JULIAN DATE) ~ 293
AVERAGE ANNUAL WIND SPEED ~ 8.10 MPH
AVERAGE lST QUARTER RELATIVE HUMIDITY -60.00 %
AVERAGE 2ND QUARTER RELATIVE HUMIDITY ~ 36.00 %
AVERAGE 3RD QUARTER REL..11. T IVE HUMIDITY 36.00 "'" t~VERAGE 4TH QUARTER RELATIVE HUMIDITY -57.00 %
NOTE: PRECIPITATION DATA FOR BLANDING UTAH
WAS ENTERED BY THE USER.
NOTE: TEMPERATURE DATA WAS SYNTHETICALLY GENERATED USING
COEFFICIENTS FOR GRAND JUNCTION COLORADO
NORMAL MEAN MONTHLY TEMPERATURE (DEGREES FAHRENHEIT) 1/yt JAN/JUL FEB/AUG MAR/SEP APR/OCT MAY/NOV JUN/DEC
--~---------~---------------------· . -.
27.50 32.90 38.10 47.10 57.40 66.90
73.60 70.90 63.00 51.60 38.50 28.90
NOTE: SOLAR RADIATION DATA WAS SYNTHETICALLY GENERATED USING
COEFFICIENTS FOR GRAND JUNCTION COLORADO
STATION LATITUDE ; 39.07 DEGREES
*******************************************************************************
AVERAGE MONTHLY VALUES IN INCHES FOR YEARS 1988 THROUGH 1993
JAN/JUL FEB/AUG MAR/SEP APR/OCT MAY/NOV JUN/DEC
PRECIPITATION
TOTALS
STD. DEVIATIONS
RUNOFF
TOTALS
STD. DEVIATIONS
EVAPOTRANSPIRATION
TOTALS
STD. DEVIATIONS
2.10
1.17
1.85
0.92
1.455
0.774
1.967
0.691
0.700
0. 353
0.072
0.243
1.32
1.37
1.43
0.43
0.999
0.885
1.206
0.350
0.411
0.490
0.246
0.211
PERCOLATION/LEAKAGE THROUGH LAYER 2
TOTALS
STD. DEVIATIONS
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.0000
0.92
1.16
0.72
0. 35
0.542
0.802
0.425
0.220
0.331
0.424
0.236
0.223
0.0000
0.0000
0.0000
0.0000
0.46
1. 24
0.37
0.66
0.265
0.785
0.240
0.495
0.224
0.394
0.110
0.235
0 0000
0.0000
0.0000
0.0000
1. 31
1. 07
0.71
0.51
0.871
0.713
0.472
0.432
0.413
0 A02
0.296
0.141
0.0000
0.0000
0.0000
0.0000
0.60
1.18
0.62
0.71
0.389
0.568
0.494
0.441
0.231
0.534
0.201
0.191
0.0000
0.0000
0.0000
0.0000
---------------------------------------------------------~~:J<-1\~:~-~~-~~~=~~=-~~~J<-l\~~~-~~=~y-~:~~ ~=~~~~~~-------~~~lit~~
DAILY AVERAGE HEAD ACROSS LAYER 2
-------------------------------
AVERAGES 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
STD. DEVIATIONS 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
*******************************************************************************
*******************************************************************************
AVERAGE ANNUAL TOTALS & (STD. DEVIATIONS) FOR YEARS 1988 THROUGH 1993
INCHES CU. FEET PERCENT
PRECIPITATION 13.90 2.614) 3971537.7 100.00
RUNOFF 9.048 2.4802) 2584718.25 65.081
EVAPOTRANSPIRATION 4.908 0.7521) 1402180.62 35.306
~ERCOLATION/LEAKAGE THROUGH 0.00000 0.00000) 0.000 0.00000
FROM LAYER 2
AVERAGE HEAD ACROSS TOP 0.000 ( 0.000)
OF LAYER 2
CHANGE IN WATER STORAGE -0.054 0.1827) -15362.23 -0.387
*******************************************************************************
******************************************************************************
PEAK DAILY VALUES FOR YEARS 1988 THROUGH 1993 ll/ 4 -------------------------------------------------------------------)
( INCHES) (CU. FT . )
PRECIPITATION 1. 33 379955.719
RUNOFF 1.684 481108.4370
PERCOLATION/LEAKAGE THROUGH LAYER 2 0.000000 0.00000
AVERAGE HEAD ACROSS LAYER 2 0.000
SNOW WATER 2.96 845040.4370
MAXIMUM VEG. SOIL WATER (VOL/VOL) 0.1182
MINIMUM VEG. SOIL WATER {VOL/VOL) 0.0962
******************************************************************************
******************************************************************************
FINAL WATER STORAGE AT END OF YEAR 1993 \'J,.-/ { ----------------------_____ _/3
LAYER (INCHES) (VOL/VOL)
1 1.7607 0.1024
2 3.3600 0.2800
SNOW WATER 0.000
******************************************************************************
******************************************************************************
JITANEnvironmentaI . . Pagel2_of 3'f
D 9/l l/96 Subject _EE.ENEl· L-WhWhi11te~M~es:i;l,!L_ _______ Proj No 61l1-001 By TAM ateD Jl[iiecll12-p1;M!J;o~decll _________ _ Chkd By __ ate __ _
AppendixB
i
0
·-"' IBE GOLDEN CIRCLE
"--J ·----~~~-~ c 0
3est Of The West " .. "
!ah combines the best of the Wes1
'11h1n Uiah s 85.000 square mlles is a
:ncentra1ed collage of wes1ern fo!k-
rc;, scenery and history
-,~er into Utah and sample some o! our
1<:: na11ona! oarKs seven national n-1on-
;~as Drive into our 43 stale parks or
gh1 national forests Explore tt1f;:
:un!ry on :his n1ap and you l! :.;oon
:ho :he s!a!en1ent first made by pio-
'er settlers to Utah This Is the Place
IVE NATIONAL PARKS
Southeastern Utah is ine place for !he
world-s grea1es1 -~and rnost cone en
!rated~repertory oi stone arches
!~rches Nalional Parks ;radernark is
Delicate Arch_ alfhov<;h Lanclscaor;
!\rel• is a wor!d recorC-hoidc;1 with a
span o! 291 fee!
WHITE WATER CANYONS
The Colorado H1vcr g!id2:::; pasi !.i..rches
and churns into Canyon!ands National
Park 40 miles soulhwes; National Geo-
graphic labels Canyon!2nds --the realm
oi rock and far hr-.(i7n"-Tho r,--..1,,...,_,,,.,~
Eighty percent of Utah s 1 2 rniHio;,
oeopre !1v2 along the foothills of !he
Vl/asatch Mountains Sall Lake City is
PC! on!y llle cultural and soci:a! hub oi
Utaf<_ but also ihe international b2Se for
!IHC' Morrr;on Cliurch
fb<e> J H_-::>h C:v<Tlnhnnv r:::;;:>!lol \,VP<:::l l,ll~'"1
Heoeriory Dance Theater and the Pio-
neer tv1emorial Theater all lend a cos
1noool1tan a1n1osphere to Sa!! Lake City_
Professional sports are represented by
the Golden Eagles hockey club and the
Sall Lake Gulls baseball team_
TITANEnvironmental
By :[AM_ Date 9111196 Subject ~E.,,FNW-L_-Wh.u.u.uite"-'-'"M"'e""sa'---------Page [( of--2±_
Chkd By __ Date Help Model Proj No 61! l-OQ!
AppendixC
1
l/10/S& 0 l/lWO {l 1110/91 0 1110/n 0 I 1/10/93 O.St
1111/88 0 : '
1112ns o. l/1119() 0 I I 1111/91 0 j l l/11192 0 1111193
l/13/U 0 11121Xl 0 : l 1/12191 0 ! ; ll1W2 0 lfl:W3 0
l/1418& 0 l/!3190 0.()4 i l 11131'11 0.01 0 11131'13 0.21
1/15/all 0 1114!90 0 l I l/1<191 0 ! \ l/1<192 () : l/14./93 0.2
1116/'S8 0 !115/9() 0.14 i ! J/15/9( om ! i 1/lS/92 0 I 1115193 0
11171&8 0.89 l!l6/90 ; ! l/16191 0 1116192 0 I : 1116193 0.-49
(118188 0.71 l/17J90 0Jl4 i ' l/[7/91 0 !117192 0 I lfl7J9) • 0.16
l/19J'S8 0 1118!90 ' I 111&'91 0 ! i 1118!92 0 l/IUJ3 0.88
1120/8! 0 1119J90 032 I ! l/19191 0 1119192 0 1119193 031
tnl/&S 0 llllV90 0 i i tnOnl 0 l/20l92 0 112003 0
11221l!S 0 I 1121no 0 : ! 112119! 0 l!Zl/92 0 I I 1121m o
!f23/t8 0 l 112219{) (} l J/21!91 0 lfl1192 i 0
lf.!<188 0 : 1/2319() 0 llZJJ91 0 ln3192 j 0 ' J/2jJ93 , 0
U251SS O 1/24,.190 0 ' 1124191 0 l!Z"'92 ! 0 ' ! tn4193 ; o
1126/'SS 0 llZ5J90 0 : i 1125191 0 1/25192 j 0 ! I 1125193 ! o
lm/88 0 0 i J./Wjl 0 0 l lfl.6193 l 0
I 1117190 0 ; 1/27/9( I 0 1mm 0 i f ln7/9) I 0
1129188 0 I llW90 o ; I 112&'91 0 11.!&'92 0 11112&'93! 0
l/30/llS 0 I ll.!9190 0 , , l/29191 0 0 l ; 1129193 l 0
1131/88 -0 o i I l/30/91 0 ; tf31JJ92 0 I I l/30/93 I 011
11US8 0 l/31190 0.03 ! l 1/31.nt 0 l/Jl/92 · 0 i ! t/31193 ; 0.2l
WJS8 OA 2/t/90 0.06 l 1/ll91 O 2/Jffl O i i 111193 i ttl6
113fl,& o.06 : 2l2J90 o.03 ' i 212191 o 2lZl92 : o 1 ; mm : o
2/4/S8 0 j 713/90 (} ; l 2f31'9l l 0 2f'J!92 0 l 1.fJ/93 i Q
11"518& 0 ; I 214J91J ' 0 214191 0 214192 \ 0.01 I ! 114193 ~ 0
2/6fa.8 0 l j 115/90 l 0 21519 ! ~ 0 115191 j 0 i l i.15/93 : 0
1111&& : 0 l 21619-0 j 0 216191 ; 0 216192 0 ' 216!93 : (I
118!&8 ! o l mm ! o 111191 l (I 111192 i o , W/93 o
W/'S8 1 0 1 2/S/90 l O 21&'91 ! 0 2/8192 0.02 1 2M3 1.16
2110/8& 1 o ! i 219t90 I o 219191 o 219192 l o : ?.19191 0-<S
0'1.ily Ptt.cipiucioa Values. Station #42073807. BIA.ndlrtg. Utah
3111/&B {} ; i 3/l fDO 0.15 : J/1 t/91 0 I 3/l0t92 l 0 ; 3111193 ! 0
3fl'.!f8S 0 311W-O 0.23 I I 31121'11 0 I 3111192
311JJl\8 0 311:ln0 0.06 I I 3113')1 0 3112192
311411>& o 3114.")0 o I ! 3114191 o.06 3113'!2
311$188 0 3115m 0 ! ' 3115"11 0.01 3114192
3116/&S 0.01 3116/90 0 ; 3116.'91 0 3115"12
31171,;g 0 3111JW 0 3117/91 0 3116.'92
311llll!8 0 311&190 0 3118191 0 3117&2
311911'8 0 3119/')Q 0 3119191 0.Q) 3118192
3/20filS 0 3l2lll90 O 3l20J'! I 0 3119&2
31211&8 0 3121/')Q 0 3121191 0.14 'j{l0/92
312'.!188 0 3l2W-O 0 3122191 0 'J{ll/92
3123188 0 3/23/')Q 0 3/23'JI 0 3f12192
'J{l</E& 0 3124.")0 0 3124191 0 =
312SJ1l8 0 3f15"JO 0 3125"il 0 'J{14192
3l26l&S 0 3l26l90 0 3126'91 0.26 I 3125"J2
3121188 o 312719'J I o 3127191 o ! 1 3176192
3128188 o 3128190 I o i 3128191 o I : 3127192 !
312911'& 0 W'J/90 : 0 ! 3129191 0 I I 3n$192 !
313Qn8 0 . j : ·J/30l90 : o.os : J/3()19 l l 0 i 3129192 i
313 uu o l 313 t190 l o ! 313 tfi i I o 1 3/30t92
411/&$ .-0 I ! .Vl/90 ! CJ ~ 411/91 i 0
4f)J88 0 i 41219-0 0 "'2191 0
<i3188 o I I 4fJl90 I o I I 4JJl91 I o
4141&8 0.01 I I -4./419-0 ! 0 I I 41419 t I 0
41511'8 0 l 415m ! 0 I I 415191 I 0
416/&S 0 I 416/90 0 j I 41619! I -0
411188 o I 41119-0 0.06 417191 I o
4/Sfe8 Q ! I 4!8/90 \')_J} -4JY51J ! Q
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41!(J/g8 o I 4110190 I o ! "-'10/91 I o
-4112188 (l l i 4112190 1
41131&$ 0 j i 411"90 :
4/14188 -0.06 l 1 4114190 :
4/lSISS 02 i ; 4/t5190 l
4/lfJSS 0.16 I . -4116/90 :
4/11/SS 0.2 ! 4117/90 ;
l-'41.:.IMl=S+_oocm=-~· I · 4118/90 :
4119/U 0 j 4119190 :
0
0
0
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( 4115191 l 0
'. 4/16191 0
' 4fl1191 0
; 4IIS/9I 0
l 4119191 l 0
~ 4/20191
; 3131192 l
I 411m I
412191 I
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414192 i
I l 416192 i
I l 4n/92 f
I i 41S!92 l
i t 419192 :
l : 4110/91 !
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: 4119192 '.
0 ; ! 3/IW3 1
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o : ; 31l<t93 I 0
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0 3119193 0
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0.03 I 1 3f12/93 0 om 1 1 3123'JJ 0
o.os I I 3124193 I om 3125"JJ i 0
0 I 1 3/Uil93 I
0 i i 311.1193 _! -0.47
DS ' ! 3/W93 j 0
-0.37 ' l 3fl9/93 :
0 --! "30l93 0
0.13 3131193 1 0
0.11 411193 0
0
0 4JJl93
0 414193 0.03
0 415"13 1 0.04
0 416193 05
0 417193 0
0 418193 0
o :!419m 0
Q ; i 4110/93 ! 0
0 . 4111193 :
0 : ; 4/J2193 ; 0
0 4113193 • 0
0 4/14193 , 0
(} 4.ft.5193 : 0
O.OJ 4116/9) . {L01
0_03 -4/17193 : 0
0 4fl&"93 ' 0
0
0
l J
1
j
5116/ll8 0 5/16n0 0 5116191 0 511);')2 0 5116/9)
51!11S8 0-64 51171')() 0 5117191 0 5116/92 0 I 51!7fl3 0.35
511EtS8 0.3 511&'90 0 i 511"'91 0 5111192 0 ' 511!!193 0
51191Z8 0.15 51191')() I o i 5119191 -0 511'1192 o 51l9!'JJ I 0
5/20!88 o 5f)JJ/'JQ I o ! 5/20/91 ·o 51!9192 o.06 511Jl19J (LOI
smna o 512tno o I 5121191 o 5f1JJl92 o.os I 512lf9J o
srnm o 5fW90 o 1 smm o 5121192 o.<JG I 5/T1J9J o
5123188 0 5l23i90 o I 5J1319 l O 5/721'J2 0.36 1 5ID19l O
5124/U 0 I 5124/90 0 512<191 0 511J,/92 OJJ2 : "'2<193 i 0
Sf2SfU D 5n.5m l 0 Yl5/9 l 0 SfJ.A/92 0.2 i i 5115193 ; O.OS
5126/ll8 0 5/W'XJ l O 5126191 O ! 512Y!2 0.15 I I 5/W9l ! 0.1!
51271Z8 o 5127190 i o i 512719l o 1 5126192 0.11 ; smm , 0.19
SIW'SS -0 5l28l90 I O 512&'91 o I 5127192 ! 0.05 I l S/18193 i OJlS
Sf.19188 0.17 j 'Sf29190 1 (),()1 Sf291'91 0 i i '5!1..S/92 0 : 5129'93 i 0
51301S8 Ohl j 51.30/90 ! O ! 5130/91 0 ! j Sf1.9/92 0,{lJ i ! S/3M3 l -0
5131/S8 0 ! 5131/90 j 0 5131.f!)I 0.43 ' 5l3Ql92 0 I '. S/Jlt93 \ 0
6/tJU 0 I j 611/C)(J 0 6/1191 i 0 1 i Sl3lm 0 ( i 611193 0
612188 o I I 6f1J90 o 612191 : o 1 i 611191 l o I 1 612193 o
(:,fJJSS 0 6f3l90 Q 6131)1 l 0 i l (J'2/92 l 0 6fJl93 0
614/U 0 614/90 0 i ! 61<191 I 0 ' I 6f3J92 1 0 61<193 O
6t5128 o t 615/90 o ; i 61519t o i I 614192 i 0.01 6/S/93 o
616/ll8 0 ' I 616n0 i 0 I I 616191 O 61Y!2 i 0.03 616193 0.01
fn!U -0 I 6/7/9() ! 0 j I 617191 0 ' I &6/92 I 0 617193 0.01
6'8188 t) i 6l&!90 ! 0 1 l 6f819 l 0 6fl/92 : 0 6/St93 o.os
6rift8 0 I 619/W 1 0.04 ! 619191 0 6llli92 I 0.16 mm I 0
6110/88 0 i 6110/90 i 1.09 ' I 611()191 I 0 619tn I 0 i 6110!93 ; 0
6/t l/S$ 0 \ titllt90 ; 0 : 6111191 i 0 ·. 61'HV92 1 0 '. 6/t !J'J3 : O
6'12.IU 0 ~ 6/l2/90 l 0 ~ 6112191 ; i) ~ 6111192 l 0 i 6/11193 : 0
6/13!ES I 0 I 6113/90 ; () ; 6113./91 0 ; ; 6/{2192 i (} : 6/{3/93 ' ()
6/t418Z a '. &1419<l ~ o ; ; 6f1419t l o.o.5 ; 6113192 ; o : 6114193 \ o
61'15188 o I 611519-0 ; Q 6115191 i o i 6/14192 j o 6115193 '. o
6116/U 0 ! i 6116/90 ! 0 : i 6116191 l 0 : 6'15192 j () 6116193 (}
0 JJ'j/9}
?f&"93
0
0
·--~~~-~-------·:: ___ _ ?/6192 7D/9} 0
___ 718/SS __ -t.---~-------~---
lt9ffiE i 0 ?/9/90 --... ----"::-------------------------
, !I!,l<) > --o-·----
'·'9_"1-... . _o__ 0,07
0.l -----____ !!} !23-.
)f'3J92 -----------045
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T.. ( ..-j .. uJo Q .l..
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111J1&s I o , 111Jm _ o _ 1 7/IJ/91 1 o _ 1112191 1.33 ~~~'~"-Jl9_J_,,__ l_o~___,
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7/t.5n& 0 ' 7/15190 0 7/l.519! ! 0 7fl4192 l 0 ~~ '7=-/"ll/9"")'-;----"0--J
7/16/ZS i 0 i ; 7/16/90 0 I 7/lfi/9l 0 1115191 ' 0 : l 711619.3 ! 0
7/17/SS ! 0.05 7117!90 O ! 7/171'91 O 7/16191 l 0 '. ! 7/l7/93 ! O
7/lt!R8 0 : 7!1&!90 O.Ol : '. 7/lS.'91 O 7/l7/Y2 ' 0 ~ 1/lMJ 1 O
7/19/&8 I 0 71!9!90 0 • 711919! o 1 71Hll92 o.08 , 7119193 O
7l20/SS
7{21/88
7fl2/&8
7f13188
7f24/S8
7fl5/88
7/16/llS
1m1&s
71291&8
7/J-0/I!&
7131/&8
Sll/&8
8!7/&8 I
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Sl!l/&8
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Slt:J/88
&114!8s I
0 0 711i>t9l 0.28 I 7/19191 I 0 i 7/1JJ/93 0
0 ! 7{1!/90 0.03 7fl!t9! 0 7120192 0 0
0 I 712219'J 0 7122191 0 7fl119Z 0 I 7122J93 0
0 I 7fl)l90 0.01 7fl3191 0.04 7121191 O.l 7123193 0
0 I 7l2<!90 0.01 7l2419! 0.23 0.08 7fl4193 0.01
0 I 711519Q 0.05 7125191 7124192 0 I I 7115193 0
0.16 l 7fl.6/90 0 I 7f1fil9! 0.01 0.17 : 7n.6/93 j 0
0 1mm 0 0 711£192 0 i 7/1JJ93 0
0 0.01 7128191 0 1127191 0 0
O.l3 1f19!90 0 1129191 0 0.01 : 7/29193 0
OJJ:5 I l 7!30l9-0 0.19 I 7130/9! o 1mm o i 71YJ19J o
0.12 I , 7131!90 o I 7131191 0 7/30!92 0 t 7/3(19) 0
ttll j ! S/l/90 0 i &i'll9t 0113 : 71311'92 ( 0 : ! t/1193 i 0
! 8rlt7l 0.04 i &ft/92 0 : U2193 0
0 ' SIJl90 0 ' : UJ/9 l 0.08 8/2191 : 0 : Ult93 i 0
0 1 { 814/90 ! 0 , &14191 I o : StJm I o 1 &14193 ; 0.01
o.38 ! I 815/90 I o
o.01 I S/6/90 I o l l £/G/91 • 0.56 j 2/'Sm. i 0.02 i l &16193 ~ 0.03
o =•m!9Qi o ; 'Vl/91 0 ' &/6191 ! 0.0( I : W./93 i 0113
0 &IWOi 0 ' t .&f:KJ91 o i mm ! o ; , £J'SJ93 1 OJlJ
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0 0.0"1 ' t/14191 i 0 ! 8/131'92 i 0 : l 8114193 i 0
&'l5/&8 : OJ19 l : 8115/90 l OJ)5 Slll/91 I O.GI S/14192 : 0 Sl!5193 ; 0
S/1618.8 i 0.05 I S/!6/90 I 0.24 l £116.11)1 i 0 £115192 0 ' ~ 811&93 : 0
Sll&/&8 l c::: 0
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! &tlS/90 ! o , t/18191 I 0.06 tll1192 , 0.19 l l 8118193 t 0
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'"" 9/l Jf'i() ;
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0
0
919193 ' 0
9111191 '
0 9/l:?l'l} .
9113/SS 0 ' 9/IJ/9Q ; 0 __ 9/13191 l (l.01 l 9f!1192 j --"0 ___ ~9:c:l.:clJJ'l=3c+--'O'°h"---1
9/t4f&8 0 ; 9/14190; 0 --_911419~_: __ 0_.____ 9/{3/92 () 9fl4193 ! 0
9i15JSS 0 ,-9/IS/90 0 9/l:S/91 ! 0 9/l4/92 0 : 9115nJ I 0
w161Ss o i , w16'90 : o ~-: 9116191-1--0--; I •115192 ' o.1J--~.1~161'J=3'-'-, --"-o-·-'
9117/83 -0 ' ( 9117190 l Q 9~ {} ~ 9/16192 ' 0 ! 9/t7/93 ! 0 =-==::::;:;::===1:====:t:===::t===~ 911ma o l ! 9118/W i o.63 : 9tU'J9l t _ __,o'---"I:+' "'9"r1"119=2_,1 __ 0'-c-_'-+.-'9"-1"1m=3+--"o"'.22"--l ::~91~1~9f8~s~~:::::::::o __ ,_' ~1~9~11~9!90~.,'-~o--'-, 9119191 : o I I 9tlll!92 i 0.22 : l 9119193 o
9120f88 o I I 9120190 0.16 1 912D!91 i o i 1 9119!92 ! 0.41 : 912D!93 o
9!21/S& o.os l i 9n1m o i 9121/9t o , ~ 9120/92 ~ o.oe 912J/9J i o
9f12/SS 0 9n:1!90 0 9a2!9t 0 ; I 9121M j 0 ; 9r21/93 l 0
9123f88 0 I 9123190 OJl>S I I 912J.n I 0 I 912W2 0 ! 912J!J3 0
91241l>S O 9124/90 0 I 9124/91 .0 912J!J2 0 ; ! 9124/93 0
9125f88 o 9125!90 o i l 9125191 ·o 9124/92 o . l 912sm o
9!261>i8 O 9126190 0 I i 9126i'Jt o 9125192 o ; I 9126193 o
9mf8s -0.03 9127M o I I 9mf91 o 9126192 o i I •mm o
9/28.IU 0 9fJ.PJ90 0.23 I ~ 9/2SJ9J 0 9£27192 0 ~ 1 9/1..8/93 t (}
9/l9/SS O : 9119/90 0 l l 9f19f9 I 0 : 9n.w2 O ; i 9129193 \ 0
9/3MS 0 9/30t90 0 l J 9/30t9t 0 ! I 9t29l92 0 l 91JW93 0
10/l/U 0 10/1'90 0..01 I i HYl/91 0 I 9f3/Jl92 0 . l lO/l/93 0
lM/88 0 I0121')() LI I ! 10/WJ 0 I I !Ofl!92 0 ' !Ol2!93 0
10/3/8'8 () Hl/'3!90 o..oz f j 10f3191 0 ! I l{l/1192 {} ; : HV).193 0
10/4188 0 l0f-4190 0 l 10/419! 0 i i lOt'3192 -0 '. l HY4193 0
10/5188 0 IOl5/90 -0 i l IOISl9t O ~ : 10/4192 t 0 lOf5nJ j Q
t-Of6188 0.02 I 10/6t9<l o ! · t0t6t91 o ! l 101s.m: ; o 1016193 ; 0.61
t0f1188 • ().t).4 ; 10/7/90 0.t lOfl/91 l 0 I I 10/6192 0 ' ; 10/7193 j 0.11
1Mm om i t0f3!90 ! o ' < tOf8191 I o ' i wnm I o • tll/S!93 I 0.19
100188 O l 10/9/90 i 0 ; 10/9191 ! O ' : l0/&192 ~ -0 ; ; 10/9193 I O
10!10/88 0 I HUl-0190t 0 l j IO/lOl'9l l O ; l l0/9192 ' 0 i. l0/10/93 t O.Ol
lOlll/8.S 0 IO!ll1901 0 i 1 tOflJ/91 ! 0 ! J lottom.l 0 ! i 10!11193 0.1
10/11188 c 1 10/1219<l j 0 i j 10!12191 t -0 ~ i 10111192 ! 0 i j 10/12193 0
t0/131S& I (! ! 10/13190 I 0 ! j 10/l319f I (l ! j IotlW:2. 0 j ! l0/13193 0
l(Vl4/88 {) ! l 10/14/90 0 l l-Ofl<l/91 1 0 : I i0ll3'92 j 0 • l l(lll4/9J 0
lQ/151&& 0 i l0/15m i () i i 10!1519! . 0 i I H'Kl4/92 l 0 : ; lOflS/93' 0
!Oll6fl!& 0 I tOll6/90 i 0 ! I lOftO/>]J 0 ' : IOflS/92 0 j !OflO/>}J i 0.()9
10117/88 0 l 10fl7/90 0 l '. 10/11191 0 j I l0lt6192 J 0 i I 10!1719:3 i 01
' 10/l&/8$ O ! 10fl8/90 t 0.1 i ~ HV1&91: O 1 j tlJ/17192 i O i lOftS/9:3.: 0.D2.
t0fl91E& o • i lOll91')() I 0.28 ' 10/19191 I o ' ' 1or1Sf92 I o : • 10/19193 I o
J0/10l8.8, O l J 10120/'9{) l 0.t I 1 \ 10/"20/91 j 0 t ) 10119192 ! 0 10/20/93 '. (}
lOl'21183 I o ! l 1001190 .1 o ; l0/21191; o : : 1000192 t o . : 10/21193 ~ o
----------~ D..U!y P«:cipit:Uion V;iJucs, Su.tion '42073807. Bl:wdinfu Utah ----~ --.. -~--·--
-~~_L ____ i C____ ; .. -~~· 1~:_<hrou£f1Fcl;itu""', -l9f>4_ ~----; ____ ·-=-.-=--:-·~--~,----!
---~pitati~ .. 4-~-w ~Pr1:9pita<ion.l I ~-_Pr~piutioct~ '------J~piution.; j -· I Pf~pltui.Qn
Date (mchcs:) ' ' Date ~ (inches) ! Date (l.n.ches) 0:1({'. 1 (uichcs} ; Ou!:. ; (tnchc:s)
11/ltJnS 0~11116/90~ __ 0 ! ! 11/161911 0.0J -~~-t!_ __ ~l_l_l~ __ O __ _
llft1!8S 0.01 •lt/!1/90· 0 "'< '.!t!l7/9J 0 tl/161'$12! 0 iti/11193' 0
J_~j o ·1111&'9{)1 o 11111&1911 0.01 111t1/92:·-~o--·---:1·inw3: o
11/191881 0 11119/90'. 0 ; 11/19191 l 0 1111~·-0~01m-,~--,-~----v~
tll20fE&l (I ' ; lll2Gl90~ 0.09 : 11120/91 (I ll/(9/92 0 -; ttn.003! 0
11n1nB i o '. 11121190, o _j_! 11n1n1 o 11nOl92 0.12 11nt193 l o
itn.ms o ! i1awol o ~: um.n1 o u121n2 o I ttf12193' o
1 lf1318Z O , ; 1 l/23190 l O i 1 ll/2319t O ' 11n.m:z 0 l t l/2ll93 0
t tn.4188 ~ i l tf2419-0 I 0 ! 1 t lll4191 0 '. ; ( 1123192 0 l 11124.193 0
111251&8 0.07 l ; J i/25190 I 0 . i ln5/9 J 0 ; l l/24192 ! 0 ~ l ll1SJ93 0
l Jn6fa8 0.11 t !l!W90 ! 0.48 llf2619 I 0 j ll/25192 0 !lf16193 I 0
t rn1rsg o ; ! 11n1001 0.01 11127!.ll o. l f tl!Wn 0 i l lll7/93 0
l Jfl&l&-8 0 1111&'9! o ; 111121m 0 l 11!2Sl93 0
11129/l<S o 1 1 t1mno1 0 ll/29!.ll 0 j ; lln&'92 0 ! 111.29193 0
I 1130/tS 0 ltl30/91 om i 111mm 0 ' ll/30l93 0
0.03 i I 1111/90 ! 1111m 0 ~ i t 1/30/92 0 I 11/1/9) 0
12!211!8 0 12/2191 0 l IU1/!J2 () ; 1 lmt9J l 0
1213/l<S 0 l i lll:Y90 l 0 !W/91 0 ... 1212192 0 j I 1U3193 ! 0
111</U 0 ; I lU4/90 I 0 1114191 0 I {2f.3/92 0 : ; lU4/93 : 0
l1!51ll8 o , I 1115190 I 0 ! 12!5191 0 : ! 1114/'n 0.13 tml93 i 0
1116/aS 0 I 121619! 0 ' l215J92 O,tl i 1216193 i 0
!:117/l<& 0 I I 1:117/90 I 0 I 121719! o • 1116191 I 0 i [117/93 ; 0 o I I 11m90 ! 0 i 1218/91 I 0 l2fl/92 ; .1)9999 1218193 ; 0
!219/l<S 0 I ! lWl9l i 0 l2!E.m ! o.u . !1'9193 . 0
12110/88 0 ~ 12110/90 ! 0 IY!0/9! om 1mn2 ! 0 ; 11/l0/93: 0
121!1/l<Sl 0 ; 121111'01 0 i i lUH/9-1 o::u; , 11110/92 0 I i 11/{l/93 i
12111188 () 1 : 12111190 I 0.27 ! i 12ll219t 0 •. 111111921 o ' I 1Yl2193 I OJJ1
0 ; l211:WO i 0.04 . 11113191 . 0 • 11112192 l 0.S . j 12113193 I 0
12114188 0 ! ' 12114/90 i 0 ! 12/l<U9l 0 j 11113192; 0 i i 11ll4193 0
l21t5J88 -0 ! I 1211Sl90 i 0.06 ! 12115191 0 ! : 12114192 () ! I l'.2115193 0.07
12116/l<S o i l 12116/90 I 0.ll i 12116191 0 j 12115192 0 j l l2/l&93 0.!8
11117/SS 0 ! 1 l1Ji7/90 I 0 I 12/l1!9t 0 • 12116192 0 ~ t 11117193 0
l21U1JSB 0 i • 1211&/90 i 0 ~ l2flS/91 0.54 ' i 11117192 (l : i 11/l&/93 ! 0
l1119/8Z 0 • • 1Yl919Q i OJJ6 I .12fl919l 0.43 l 1111&'91 I OJ: ! 11fl9/93 i 0
!2120/88 0.05 ! i 12110/90 i 036 I 12/20i91 . 0 '12!19192! 0 ! ! 1Ul0!93 i 0
11121188 0.38 , i !2J:UJ9Q I 0 j 12f2l/9l; 0 ; 12!20t91 I 0 j 12121193 ! 0
0 ; l 12121191 ! o •t1121m! 0 ; 12122193 ! 0
0.2 ; 12123t90l 0 ~ I 12123/91 ! 0 : 12fl:1/92 l 0 • 12123193 i 0
11124128 ! (t13 . ' lU24190 ! 0 i lW.4/91 t 0 12123192' 0 ! 1:2124193 ' 0
0 fKI } 2f25f90 i 0 i 17i25191 ! 0 , l2fl.4192' 0 ; J2fl5193 0
12126/as I 0 : 121261'9-0' 0 ! : 12f2619l \ 0 12125192 0
I
I
I
)
I
I
I
I
I
I
40
30
0 20
0
w c: ::> ,_
""' a: w 10 Q ::;:
w ,_
0
MONTH JAN
EXTREME 16 MAX.
MEAN 3~e MAX.
MEAN -2.5
MEAN MIN. -G.S
EXTREM£
MIN. -29
(Al MEAN
(8) MEAN
(C) MEAN
~--...... _....,. ------------
JAf>L-E ]__
MONTHLY MEANS AND EXTREMES
OF TEMPERATURES
BLANDING, UTAH
ANNUAL MEAN: 9.9°C
FEB MAR APR MAY JUNE JULY AUG SEP OCT NOV
18 24 27 33 38 38 37 34 29 21
6.9 10~2 16.3 22.8 2 8. 7 31. 9 30.2 26.0 18.8 10.2
o.s 3.4 8.4 14. I 19.4 23.1 21. 6 17.2 10.9 3.6
-5. 9 -3.2 0.4 5~4 I 0.1 14.2 13.I 8.4 2.9 -3.2
-22 -15 -II -6 -I 8 3 -5 -12 -19
DAILY MAXIMUM
MONTHLY
DAILY MINIMUM
(A)
(8)
l ( c) ~
DEC
(D) !
!
15
4.5
-1. 7
-7 .8
-22
(D) FREEZE DATES o.A.JlA-:lll:tl 2$.. M:OOR&l
?LATS 2.7-2
i
r
TITANEnvironmental
By TAM Date 9111196 Subject ~f~oF~N~-~W~h~it=e~M~e~sa"----------Page1:2_or_Jf_
Chkd By __ Date Help Model Proj No 6111-001
AppendixD
,:,\.,fn-wh'.<"'\hdp2_1_-k P/ll/H)
-12-
\A\L.\t()(-.S f\:1\50 ~bN-" f\u_ r~oflULU[S
Table 3.4-l
Physical Properties of Tailings
and
Proposed Cover Materials
Atterberg % Passing Maximum Optimum
Limits Specific No. 200 Ory Density Moisture
Materi a 1 Type Ll £l Gravity Sieve (pcfJ Content
Tailings 28 6 2.85 46 104.0 18.1
0••d~~ Fill 22 7 2.67 48 120.2 ~
Clay 29 14 2.69 56 121.3 12.1
Clay 36 19 2.75 68 108.7 18.5
Note: Physical Soil Data from Chen and Associates (1987).
-------ADVAtiCtD TcRRt\ TE:~TltlG,, -<c-------------------------------. 833 Parlet Street
Lakewood, Colorado 80215
[phone]
l ..
c u
140
135
130
125
120
s 115
£
"' c
(})
0 110 c 0
105
100
95
90
85
--·
,_
,_
-
,_
-
-
-
-
•..
-
-
0
Proctor Compaction Test
, , UT-1
·---.. --------~------------------------~-----~---------------~---------
\ \·-·--·-----------------------~ !---.--~--~-----~------
\
\
\ Zero Air Voids Cu
\ , ~ v<3TeportediJe
~
,-----r ~\ /e ~~
I ~ ~
··~··· ~'
~
I I I
10 20 30
Moisture Content (%) •
OPTIMUM MOISTURE CONTENT 0 13.9 MAXIMUM DRY DENSITY 113.5
ASTtJi 0 1557 A, Rock correction applied? N
ve
,_,.
40
CLIENT
PERMElu.ILITY DETERMINATION
FALLING HEAD
FIXED WALL
Titan Environmental JOB NO. 2234-04
SAMPLED
TEST STARTED
BORING NO.
DEPTH
SAMPLE NO.
SOIL DESCR.
SURCHARGE
UT-1 TEST FINISHED
Remolded 95% Mod Pt. @ OMC SETUP NO.
MOISTURE/DENSITY
DATA
Wt. Soil & Ring(s)
Wt. Ring(s) (g)
Wt. Soil ( g)
Wet Density PCF
Wt. Wet Soil & Pan
Wt. Dry Soil & Pan
wt. Lost Moisture
wt. of Pan Only
Wt. of Dry Soil
Moisture Content %
Dry Density PCF
Max. Dry Density PCF
Percent Compaction
(g)
(g)
(g)
(g)
(g)
(g)
200
ELAPSED SURETTE
TIME READING
(MIN) hl (CC)
0.2
2599 10.8
1427 14.2
1440 16.8
1440 18.6
1440 20.2
1440 21.6
1469 23.0
1440
BEFORE
TEST
386.9
93.0
293.9
122.3
302.4
266.2
36.2
8.5
257.7
14.1
107.2
113. 5
94.4
BURETTE
READING
h2 (CC)
10.8
14.2
16.8
18.6
20.2
21.6
23.0
24.4
Date:
Date:
AFTER
TEST
404.5
93.0
311.4
120.5
319.9
266.2
53.8
8.5
257.7
20.9
99.7
113. 5
87.8
8-8-96
·'k.
PERCOLATION RATE
FT/YEAR CM/SEC
0.14 1. 4E~07
0.09 8.4E-08.
0.07 6.5E-08
0.05 4.6E-08
0.04 4. lE-08
0.04 3.7E-08
0.04 3.6E-08
0.04 3. 7]<;:::9.?
7-28-96 CAL
8-7-96 CAL
1
' p~;J..;~ (C1.,1tY)
Data Entered By: NAA
Date Checked By: ~""'---­
Filename:TIFHUTl ADVANCED TERRA TESTING, INC.
r• •·wr·
iK
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' • I • • • • • • • • 1 • • • • • • • • • ! • • • • • • • • • l • • • • • • • • • I • • • • • , , , ,
22
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........ 1 ................................... . .. ·:· .. : ... : ... : ... : .. ·:· .. :·": ... ~ ..... : ... : ··: .. ·: ... ~ .. ~ .. :··:··~ ..... : .. ·:·:··:·":·-: ... : ... : .. : ...... ·: .. : .. ·:·:~·:·:·: ... : ... : ...... ~ .. :. ·: .. :· .. : ... : ... : ... : .. ·:· T ·: .. :· .. :·· : .. .. .. . ... . . ... .................................... """"'!''''
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' . ' ... ' .. ' .. ' ..... ' ' ....... ' ....... ' . . . ' ' ' . ' ' ' ' ' . ' . ' . ' ' . ' . . . ... ' . . . . . . . . . . . . . ' ..... ' . . ' . ' ' .... ' ' . ' ' '
20 I···· .:.'. ..... : ·,···.···:·-: ... ~ .. 1···:··:· .. :···:···: ... : ... • ... : ... : ...... · ....... : ... : ..... :.: .. ·:·+~·· ... : .. ·:···:-·.··\ .. ·H·~··: ...... :·+·:-·:·-H·~··~··:·· ... :: .. ~-: ... ~ .. : ... : ... : .. ·:···:··· ''':"': ... : ... : ... :···:····· .. :···:···1
···•···•···•···•····· : .
"'I'"""" .................. ""'"" ................... ..
' ' ' ' ' ' < ' ••••• ' ' ' ' • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • ••••• ' • • • ' , • ' ' '
, • ' ' ' j ' ' •• ' ' ' • ' ' • • • • • • • • • • • • • • • • • ' •• ' • • • • • • •••• ' • ' • '.' • • • • • • • ' • ' • ' ' ' ' ' · · · · · · · · · · · · · · · · ' ' · · . . ' ' .. ' ' ' ' ' . CLAY. ' ATERIAt.: ' . ' ' ...... ' ... · ... · · . . : : : I : : : . : . . : : : : : : : : : : : : : : : : : : : : : . : ". . . . : . . . : : : : : : : : : : : : : : : : : : : : .. " . I . . . . . . . . . . . . . . . . . . . . . . . . . . . . SITE .#'A . . . . . . . . . . . . . . . . . . . . ....... .
"""""" """ ................................ ·1 : . . .; .............. :·:·"'.'" ... : ...... : .......... ~ ................... :··:·~· .. :··:· .. :·"~"~" .......... ~ ....... : .. ~ ................................ : ...................... :·· ;.... : . ·: .... ·: ..... ·:·. ·,
. . . . ' . . . . . . . . ..... " . . . . . . . . . . . . . . . . . . . . . . . . . . . ' . . . • . . . 17.1,,
............. , •. ••. 'f"""'"I'"'
' , , • ' ' i , • ' ' ' ' ' , , ' ' , , , • ' • • ' ' • '• ' ' • ' I • ' • • • , ' • • , • ' • . ' • ' . ' ' , , , , . ' '
18 1"
"''"'"""!'""'."' "'"""!"'"""!'"'""' ' ' ' ' ' ' ' ' . ' .. ' ' ... ' ...... ' . . . .. ' . ' .. ' . ' ' .. ' . ' .
. .. I ... " ... ' I" ..... " I' ... ',' .. ' I" ..... " I" ....... I" ..... "
' ' ' ' ' ' ' ' . ' . ' ' . . . . . . ' . . . . . . . . ... ' . . . . . . ' ... ' . . . ...... ' ,· . ' . ' .. ' ..
I I " " " " , I "''""""'I"'"" '"'"""""""""""'""'j'""""""""'"'""""""'""'''""'""'""""'"""""""""I"'"'""'"""""""'" ......... . 16 I . ''"" '·: :··: ... : ... : ... : .. ·:·":'"'" ....... : .. ·:·":'":·": ... : ... : .. ·:· .. "':":'"'.'"'."''.'": : : : : : : : : : : : : : : : : : : :. : : I : : : : : : : : : : : : : : : : : :
' '· • ' ' ' • ' ! ' ' ' ' ' ' ' ' ' ! ' ' • • • ' ' ' J ' • ' ' ' ' • ' • ! ' ' • ' ' ' ' • ' I • ' . ' '
' ' ' ' ' ' ' ' ' ! ' ' ' ' ' ' ' ' ' ! ' ' ' ' • ' ' ' ' I ' ' • ' ' • ' ' '
• • • • • • • • l • • • • • • ' • • I·, • • , • • • • • I • • • • , , , ' , ...... , ......... 1 ......... , ......... , . ., .•.... , .........
. ' ' ' ••• ' • • • ' ' • ' ' ' ' ' t ' ' ' ' • ' • ' • ' • ' ' ' • ' ' ' ' ' ' ' ' •• .. .. .. .. . I ......... I ......... I•: ...... .
' ' ' ' ' . ' ' ' . ' . ' .. ' . ' ' ' . ' ' ' ' ' ' ' .... ' ' ' '
' ' ' ' ' .
14 2 4 6 8 10 12 0 14 16
\\'rt 6.v~J/IA."f l.\ cil'"'(j ("1111.."' \ ?. <t>I<..-"'{) TENSION, BAR
.(,.., · rvtM Y:M\<..):v-.<1'{. cov-\-v-...\-"' c)l,kC FIGURE 4.4-2
SUMMARY OF CAPILLARY MOISTURE
RELATIONSHIP TEST RESULTS
WHITE MESA PROJECT
DAT A FROM CHEN & i\SSOCIA TES; ~ ~
I co
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1-)
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1 s I ··· ............................... I · ... : ... : ... : ... : ... : ... : ... : ... : ... 1 .. : ... : ... : ... : ... '.·'·'.· .. '.· .. : ... : .. -/ .. :···'.··'.· .. '.· .. :··7'·:··'.··'.··i···:··~ .. ·:··:···:·:···:·'.·7+·:··:-:-:: .. ; .. '.··~· .. :···'. .. -J--·: .. : ... : ... : .. ; ... : .. ·: ··'.---:· I··:· : ... : .. ·'.·· :· : .. ·:· • ... : .. .
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1 4 I \ :··: . ·: ........... '.··1 ·····'.···'.·": ... ; ... :···'.······'.··\··'.···: .. ·:···'.···:· .. : .. ·:·-:··:··+":"·:··'.··~···:·~· .. :· .. :-·: ... F ... : ... : .. ·:· .. '.··'.· .. :··'.··'.··+-:··: .. : ... : .. :· .. :··: .. :-.. :··\··:·-'.<··'."·:··:-<··:· .. :· I .. ... .. . ......... l ......... l ......... l ......... 1.·········
' ' ' ' ' < ' ' ' ' • ' • ' • • • • • • • • • • • • • • • ' • • • • • • • • ' •••• ' '
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... ·0:q?l"I·~ , , , , , , , ! , , , , , ••',I• 1,' • • • • <X, • •••,,••I••, o
10 ' \ ' ' ' '
' ' ' ' ' ' I ' ' ' ' ' ' ' ' ! ' > ' ' ' ' ' ' ' , • •,, , , • I • • • • • • • • • l • • • • • > • • •
L .........
1
. . . . . . . . . . ........
1
....••.•.
1
.. ~RANrM Fltt .
1
. . . . . . . . . . ....... . ..... ........ ......... ......... ""'S' . . ' ......... ········· ..... · .............................. -.ITE .+2' '3 '& 5· · · · · · · · · · · · · · · ·
. . • • . . . . • . • . • • • • • • • • • • • • • • • • • • • , • I • . • • . • . • • • . . • . . . • . I
8 -.......................... : : : : : : : : : : :.: : : : : : : : : : : : : : : : : i:
16 0 2 4 6 8 10 12 14
TENSION, BAR FIGURE 4.4-1
SUMMARY OF CAPILLARY MOISTURE
RELATIONSHIP TEST RES UL rs
WHITE MESA PROJECT
DATA FROM CHEN & ASSOCIATES
:i :;:;=:::::.
4--
1.: ..
-·
I °" .,,
I
1·)
0
Porosity
Porosity is calculated from the specific gravity and dry bulk density according to the following
equations;
L Dry bulk density= [(specific gravity)( density of water)]/[! + e] (Ref: Principles & Practice of
Civil Engineering, 1996). See Appendix C.
2. Porosity= (e/ (I +e)] x 100 (Ref: Prineiples & Practice of Civil Engineering, 1996). See
AppendixC.
Max. Dry Dry Bulk Specific Density of "e" porosity
Density Density Gravity (I) Water (lb/ft3) (3) (4)
(lb/ft3) (1) (lb/ft3) (2)
Tailings 104.0 93.6 2.85 62.4 0.90 47%
Clay (5) 115.0 103.5 2.72 62.4 0.64 39%
Random fill 120.2 108.2 2.67 62.4 0.54 35%
Notes:
L Physical soil data from Chen and Associates (1987) included in Appendix B.
2. Bulk dry density is 90% of the ASTM Proctor maximum dry density for all materials.
3. Calculated using Equation I above.
4. Calculated using Equation 2 above.
5. Clay physical data are average values from site # l and site #4. clay stockpiles as given by
Umetco Minerals Corp. 1988.
(, \
~WifiAJ'."~'];) (L"-J,"" ~l\)
AUG-39-1995 11 : 01 502 820 2941
115" x 115•
(1'17/ ·'. '
t(2xo-8 c....,0-
6.6 f(J-8
I. Klo-F
.0 K lo-8
K 1.,-f
23 ,0 -Y
-i :J.~ K
7. 8 .I:' '" 7 J.s-x 10
7. f K !O -?
'f.2 " 10-7
1.7. J( 10-7
s:.o x 10-7
A-<-= :2. '12. K ,.,-7
3:.S-x ,,_,-7
S«</ Xfo·J'
,{.( Kr.y-7
<J.J Kta-6
}
UL." t<-.
c7/IJ'/7Y)
:?.7 X fo -7
s.3 x /4 -7
u K {V
• 7
5-.</ J' Iv ~ 7
Aw." 8.37 xia·7 c...lf-
96%
( 1/zJ/T<f)
P.08
~~ ,..,_ ~ ~. ~ ""\"
....,_.,, -:--,. ·~ .. ' ;..i
TMLE I
SU/'J'V..~Y OF LABOAATO~Y TEST AtSULTS
f l
. I I I HATIJAAl KJJt t~<..n Op t I Nn1 Anr,,ttAG lll'llTS CAAOAT!OH AHAlYSlS '-C.Mt.0£0 fE~M£~ 1 L l rt
it 1 t (Hipth i o,, Mc I 1 tvr• Spa c ! f I c. X> 11
!40 1 e (ft,) !M<:.lHtute Dty De1H l ty Col"!t ol'!t l I qv Id P!attfe!ty M.u: lmtr1 l'J it Ing L• t 1 t h•n Dry Molt {\Jflt Criv!ty r,,,.
!Cot1\el'\t Otntlty ll~;t lnd•J( s I lit KlOO lM i>oni l,:y Content ft. !yr, CITl,/ltC, rm-lod\ I ocfl IX\ 1% IX\ (X) , IX\ (oc( IX)
l H 117. 5 10. a 20 l #16 ;a 19 t 11,-' 16,.4 0,57 5.5xlo-7 s ll"ld'f s 11 t
l I 6 #16 62 > • >
l H 7. l s ll'ldy c rayey
104,. I 18, 5 ll ,/ a )14 In. S6 I l IOl. I 22,0 8,2x!O-S s r 1 r
$ 7 j • I 0 o. O!lS "65 Calc1r~1.L . Siity Clay -I
6 1-l IO, ,l 1$ 7 #16 77 Sindy C!.iy s 11 t
6 et~0 6. I 17 / a #4 )0 Sa11dy Clay
B 5-5' I J, ! HP J/4 In, 61 C1lc1rtovs
Slr1dy Silt
#16 SJ 9 0-1 B, I HP Sand .. SI It
IO 4-61 14 10 #4 7l Stndy C!1y
II 51· 6 j i 11, 0 '6 6 #16 65 S 11t1 tone~ ..
20,6 5) ,/ JS #16 88 '59 9;,o I B,) 0,068 6,6,o;10-S
Cl.ayitol'lc
11 H ! 0 1. 0 l.6) Yc1thtred
C!.ay1tonc
l9 / I) #8 e;
I) 1 .a I J, I
C• ! c.areo.ui
Silt Clay
4-0 / l I #4 89 14 I·, 19. )
VcaO·,•red
l6 ,/ 8 )/8 In. 65 10),4 18,o 1, '.l:x ! O~ 8 U; C!zy1ton11
IS 1j-4j !06,8 19, 0 17 0,012 i"icJd, C1lc•r•H is
S11'ldy Clay
I 7 l.) \1,4 19 4 #8 59 Sandy Sl Jt
Ai O·l 117. I 12. 8 l) 6 #16 70 109,9 I l." 0,0)$ J,4:i11o~a S11'1dy C!1y'""
S ! It
ll l·l I), Z 26 / 10 #4 )) . SJt1dy C)t1y I
/l) 1-) l1S / 24 KlO > 87 Yc1thertd
Cl•ystone
61 v/ 96 ;l) 6-J )O #JO Cl Ayt tOIH1
A's 1-ll i). ) I 26 / 9 Kl S7 Sandy Cley
A6 1d·S I 5. J ' 41 / 20 #4 91 Vc•thered
Clayston11
~~ 18 / J/8 In, 0-1 12, 7 10 72 .; s.ar1dy Cl1y
l-J B, 5 19 2 #16 59 S1nJy Silt
)l 8-Sj 5 > 6 1) 6 #JO )) Sal'ldy Cl.ayty
s ! J t
)) 0 ~ti i 1 a, a I ! , 5 1) 5 R'8 72 I 10. S I ! • 5 0,6) 6. ! x ! o~ 7 S JlfHiy Cf lyey
SI J t
)8 H ! I LO 16. 7 19 ~ I\ )/8 In. 69 ~ ~;. ~ 17. 9 0, 0111 ~.0.1(10~8 $Midy CIJY
Hl 16' 2 16 9 #B 64 21 I 4 •6 4 ' "' I t t l'I~ 8 . ,. $ andy Clay
'° 1.-~-· ! !O. C
~ .-l;...
-tll!lll -llllt ~ -11111!1111111 1\11111111 '1111111111 8IJ ~· lil.llllii! -:;;. ~ --~
''
TM Lt
SU~Y or LN!OA~TORY TEST AESULTS
Pagt1of1
E I HATUii.AL Xaidli'IU'I\ Cptll!'IU'I'! ArT(,,J[~C LIXITS Ci\ADATIOX .JHALYSIS A.£ML0tO l"E~X().J!Jl!rt
OJJµtM i Ory KoflturJJ . Sp•c:!f!c S.O!I
{ri.) I.~."."'.'" 1· ... Ory ~r1llty Cont6"t ll~IJ P!•1t!c!ty X..U./1rn.n Piltlflg l•tf. th~ Ory Moltt\lrt Gt.avlty iypd I Ctu'dM\( Dcr,1lty
1
. Llrr-lt !ndtit S!t4 #200 1..« ~tlty' COofl~•nt (t,/yr, Ur>./111(., 1--c--L_G!_I.~ '''" 11 111 m (11 ' (1) i"f\ IX\ .
40; I $~9! ) 6 .. S I ll B )/3 In. 60 ~~ndy Clay
~; llJ:J.·ild I /,6 I 26 / 10 )/8 !n, 7) S,it;dy Clay
~J 111.12 I ILi ! 4! / 11 HI.; M Cllyitcr
4) l1J')-i6! I II 110,0 !6 .. 9 .4-0 / 14 )/S In. es 44 104,! !S.8 0.024 ? .. .l~!o"e Z.62 Cl1yltc1"1'·-
i i I / 11J; i 6·)·7 i 1,5 i JO l\ )/8 In, 79 t1Jcareov1
j i \ SJt'IJy C!~y
~6 !0·l i :l.J i 22 6 #16 76 S1<"idyCl1yJJy
I i I s I l t A I 5·5+ I j )0 / 9 )/8 !ri, 6S s~ndy Cl.ty
y{9 j 5.7 I I !!O,/ !5,6 1$ / 9 NJ6 71 !OS,2 1L9 o,J) ),.L'l10·8 s~nJy Cliy
As I 11,.. JS j I 28 / 5 118 SS Cdcireout 11 SAndySf!t
51, j 0~1 I 12, I I 2) 9 /('d ~ 61+ S4ndy Ctay
55 j S-5\ : ?.8 I 28 / !ii !/JO 71 5!ndy C14y
55 l:n-iot ' ) 28 / 13 114 71 S&rdy Clay
v(a I q.6 : 12,) I JS/ 11 fl; 75 .tf~~y, Silty
61 i O·I ! 1 :,5 ! 21 ti 1116 75 Sandy Sllt
I j I 61 1111.11} j ~I I Nit l !n, )4 C1lcareoi.11 , l S ind t. .' · f
6J r1.6 i I )O I 14 118 68 S!l"Jdy c /
/ '
6S I i-1 I, 90 I I "' #16 44 $11/yS ·'
68 , ~· 8 · B 6 : 2a./ l) /18 67 sir.dy Cliy
I I J "'· : . ' '
70 i)\~l•t ' 1; i, i 27 4 !f !n, 46 C1!careous
I
, : Slndt.S!!t
72 0•1 I 11.2 i 22 a #!6 S9 s~11dy clay
~s I 10•11 I :i.1i I 4! I 25 114 75 Vcathertod I · 1 Ctayitone
75 11 .p
1
I 45 / 22 #16 91 Cl!ystofte
'
.._,._,
·~ -s--
-~"'' --_, ~ illl!lllill!' ........ 11111F""1 ~ . llllllll ~ ..::') .~· ~· ~ ·~
TABLE 11
LABORATORY ?ERHEABILITY TEST RESULTS
Compaction
,A.
Sn mp ) e I Sol I Typo I f Dry Holsturo i of' Surcharge I Perrneabl 11 ty
• Dons I ty Content ASTH 0698 Pressure
(pcf) (t) (ps f) (Ft/Yr) (Cm/S
TH2PO'-S' Sandy SI It 11l.6 I 6. 4 95 500 0.57 5. s· · ~
THS@H'-10' Calcareous SI lty Cl~y 102. I 22.0 IO 1 500 0. 085 8. 2)
TH 12 e 2'-5' ~oatherod Claystono 95.0 18. 3 911 500 0,068 6.6x10
Tll 15 e lt'-11J:1 I Calcareous Sandy Clay
I
l 03. 4 18.0 97 500 0.012 I. 2xl o
TH 19 g 0'-3' I Sandy, Clayey Slit 109,9 12. 4 911 soo 0.035 3. l1xl0-
\,
TH J7 Q 0'-4' Sandy, Clayey Silt 110:5 11. 5 93 500 0,63 G. I xlO
Tll 38 g 5'-7' Sandy Clay l 02. 4 17.9 92 500 o. 04 I 11.0xlo-·
T!i Yn g l1 1 -St 1 Sandy Clay 106.4 16. 4 97 500 0.017 l . 6x Io-·
;-11 t,j g lH-16l:' Clays tone I 04. I 15. 8 95 500 0.024 2.JxlO-,
Tll 1,3 8 5'-7' Sondy Clay 105.2 13.9 95 500 I O.JJ 3. 2>
""' ~ '"""-
APPENDIXE
Freezeffhaw Evaluation
.:.=====~ ~= =:= 5 a a:-:== Environmental
TITANEnvironmental
By JFL Date 6/17/96 Subject _,,E=FN~-_W.w...=.h=ite"-M~e=sa,___ ________ Page_\_of.Ji
Chkd By~ Date'\)\\ \jlp Effect of Freezing on Tailings Cover Proj No 6111-001
Purpose:
Method:
To determine if freeze/thaw conditions will impact the performance of the White
Mesa uranium mill tailings cover. This calculation brief predicts the depth of
frost which may be anticipated at the mill site. Only frost depth is evaluated since
this would have the greatest impact on cover integrity (i.e. increasing permeability
or damage by frost heave).
A digital computer program of the modified Berggren equation for calculating the
depth of freeze or thaw in a multi-layered soil system was used for purposes
presented in this calculation. This method, used for determining the frost depth, is
considered adequate for Uranium Mill Tailings Remedial Action (UMTRA)
Projects by the U.S. Department of Energy for the following reasons:
• It calculates depth of frost based on a zero degrees Celsius isotherm, whereas
the frozen front occurs some distance above this line.
• Extrapolation of current weather records beyond 200 years is not reliable.
• Extreme changes in temperatures for the 1,000 year design life are not
anticipated based on geomorphic evidence.
Parameters for the cover materials based on accepted methods and existing
database values previously collected, were input into the computer modeling
program to determine the depth of frost penetration. A cover thickness of 2 feet
random fill over 1 foot of compacted clay (as determined by HELP and RADON
computer modeling) was used.
Assumptions: The model assumes:
• One-dimensional heat flow with the entire soil mass at its mean annual
temperature prior to the start of the freezing season.
• At the start of the freezing season, the surface temperature changes suddenly
from the mean annual temperature to a temperature below freezing and
remains at this temperature throughout the entire freezing season.
• The effect of latent heat is considered as a heat sink at the moving frost line.
• Soil freezes at a temperature of 32 degrees Fahrenheit.
c: \efn ··whi t.e\freeze2. clc f 9/ 11/96 J
TITANEnvironmental
By JFL Date 6/17 /96 Subject ~E=F~N~--W~h=ite~M~e=sa~--------Page _kof Jf_
Chkd B:1-BM_ Datel-J(1 \ /qy Effect of Freezing on Tailings Cover Proj No 6111-001
Results: The total frost penetration depth is less than 6.8 inches. Therefore, the 2-foot
layer of random fill will provide adequate protection to the underlying 1-foot clay
layer. See Appendix A for computer modeling results.
Parameters: The computer program requires input of the following parameters for the soil
cover layers:
-freezing index (degree);
-length of season (days);
-mean annual temperature (degrees Fahrenheit);
-n-factor;
-layer thickness' (inches);
-water content (percent);
-dry unit weight (lbs/cubic foot);
-heat capacity (Btu/cubic foot-deg F);
-thermal conductivity (Btu/foot-hour-deg F), and;
-latent heat of fusion (Btu/cubic foot).
Freezing Index/Length of Season/Mean Annual Temperature
Default values from Grand Junction, Colorado were used for the freezing index and length of
season. Grand Junction, Colorado was used for default parameters since it is similar in elevation
and climate to Blanding Utah. An actual mean annual temperature for Blanding Utah from
Dames & Moore (1978) was used for modeling purposes (see Appendix B).
N-factor
A default n-factor of 0.70 for sand and gravel surface type was used as per recommended in the
freeze/thaw model guidelines (Aitken and Berg, 1968).
Soil type
Soil type was considered to be fine grained soil for both cover layers. Soil type number is 5.
c:\efn-wh1te\freeze2 .clc {9/12/96}
TITANEnvironmental
By JFL Date 6117196 Subject ~E=F_,_N._-_W~h~it=-e ...,.M-=e=-sa,,__________ Page _J_ of J.t
Chkd B~ Date"j{\\ ('11.f Effect of Freezing on Tailings Cover Proj No 61I1-001
Layer thickness'
The thickness of the cover materials were determined by infiltration and radon flux modeling
programs to be 2 feet of random fill over 1 foot of clay. For this calculation, a single 36-inch
layer was used. This was used because the random fill and clay soil have very similar properties.
Moisture Content
1K
Optimum moisture content from Chen and Associates (1987) and Advanced Terra Testing (1996)
was used for the random fill and the clay (UT-1) layer respectively. This data is included in
AppendixB.
Optimum moisture content:
random fill =11.8%
clay =13.9%
A weighted averaged moisture content of 12.5 percent was used for this analysis.
Soil Density
Soil dry density was determined from Chen and Associates (1987) for random fill and Advanced
Terra Testing (1996) for clay. The maximum dry density for the random fill was measured to be
120.2 pounds per cubic foot (pcf) and the maximum dry density for the clay was measured to be
113.5 pcf. Assuming the soil will be compacted to 95 percent of the maximum density, the
weighted average bulk soil density would be 112 pcf.
Heat Capacity
Based on the nomographs presented in Aitken and Berg (1968) and included herein as Figure 1,
using an average soil density of 112 pcf and an average moisture content of 12.5 percent yields a
heat capacity of 30 Btu/ft3 ° F.
Thermal Conductivity
Thermal conductivity of the soil cover was assumed to be similar to that for a dry sand. The
thermal conductivity of a dry sand is reported to be 0.19 Btu/ hr. ft °F (Perry, Robert H. et al.,
1984) (see Table 1).
c: \efn-whi te\ fr-eeze2. clc { 9/ 11/96)
TITANEnvironmental
By JFL Date 6/17/96 Subject ~E=F~N~--W~h=ite~M~e=sa~--------Page_1__of_il'._
Chkd BYJ2tM.Date &J/h /ql.p Effect of Freezing on Tailings Cover Proj No 6111-001
Latent Heat
Based on the nomographs presented in Aitken and Berg (1968) and included herein as Figure 1,
using an average soil density of 112 pcf and an average moisture content of 12.5 percent yields a
Latent Heat of 2000 Btu/ ft3 .
References:
Advanced Terra Testing, 1996. Physical soil data, White Mesa Project, Blanding Utah, July 25,
1996.
Aitken, George W. and Berg, Richard L., 1968, "Digital Solution of Modified Berggren Equation
to Calculate Depths of Freeze or Thaw in Multilayered Systems", October, 1968.
Chen and Associates, 1987. Physical soil data, White Mesa Project Blanding Utah.
Dames & Moore, 1978. "Environmental Report, White Mesa Uranium Project, San Juan
County, Utah, January 20, 1978, revised May 15, 1978.
Perry, Robert H. et al., 1984. "Perry's Chemical Engineers' Handbook, Sixth Edition", McGraw
Hill Book Company, 1984.
U.S. Department of Energy, 1988, "Effect of Freezing and Thawing on UMTRA Covers"
Albuquerque, New Mexico, October 1988.
c:\efn-white\freeze2 .clc [9/12/96)
3-260 Pl ,CAL AND CHEMICAL OAT A -\At> L6--1-
-:lABtE !I 929 Thermal Conductivities of Some Building and Insulating Materials•
Aerogel. •ilica, opacifiod ................. .
A•Ocstoo-cement board..
Asbertoo •beets.
Asbcstoo .late ..
Asi-to. ...... .
Aluminum foil (7 air SJl&OO! per 2.S in.) ••.••••.
A.be., wood ............................... . ~1;1~~ (N~i,; ii.':::.·.::::::::::::::::::: Bricb:
Alumina ~2--99 3 Al.O, by wt.) fuocd .••...• Alumina 64-653 Al,O, by wt.) .•.••.••....
(See also ricb, fire clay) ................. .
Bw1dinr; brick work ..................... ..
Cubon ................................. .
Chrome brick (32 3 Cr.O, by wt.) .......... .
Diatomaeeou. earth, natunl, acrooo strata
(Note 2) .............................. .
Diatomaceou., nat.nl, paralld to strata
(Note 2) ............................ · · ·
Diat.om..oeou. earth, molded and fired (Note 2)
Diatomsceou. =th and clay, molded aod fired (Note 2) .......................... .
Diatomaceo..a earth, high buru. larce _..
(Note3) ..............•............•...
Fu-e clay (Miaoouri) ...................... .
Kaolin insol..tinc brick: (Note l) ....•.......
K.t.olin insol..tinc firebrick (Note~) ......... .
M~...;te (ll6.83 M&<>. 6.33 F..O., 33 eao. 2.6 % s;o, by wt.J ................. .
Silicoa carbide brick, recryatallised (Note 3) ..
Calcium carbonate, nataral .................. .
White marble ............................ . Chsll: ......•............•.•..............
Calcium sulfate (~fuO), artilicial ............. . plaster (artificial) .•........................
(ballding) ......................... . ~i!'~c ~~~~-.'.'.'::: :: : : : : : : : :: :: : : : : :
Carbon stock ............................. .
Cardboord, conugatcd ...................... .
Celluloid ...........•.•.....•...............
Charcoal fiali:co ............................. .
Clinker (granular) .......................... .
Coke, petcolcom ..........•.•.•.........•...
Col:c, pctcolcom (20-100 mesh) .............•.
Col:e (powdered) .............•..............
Conacte ~t:t;:·:·:·:·::::::: :::::: :::::::::
"!=r;t
p, lb./cu. Ct. at room
Uaipers-ture
6.5
120 SS.5
112
112
29.3
29.3 36 36
36 36
43.5
43.5
0.2
iif" 115
"9ff
200
200 200
27.7
27.7
27.7
27.7
36
36
42.3
42.3
37
37
27
27
19
19
158
158
158
129
129
129
129
129 162
"%"'"
M.6
132
77.9
·94· ..
I
'8]j"
11.9 15
62
t, "C.
120
290
20
SI
0
60
-200
0
0
100
200 400 -200
0
36 m 0-100
20
4ll 1315
600 1100
20
200 650
1315
204
871
204
671
204 671
204
671
200
1000
200
600
1000 1400 500 1150
200
760
204 650
1200
600 800
1000
1200
1400
30
"° 75
2S
36
0-100 -IM
0
. ·30
60
60
0-700
100 500 400 0-100
k = Btu/(h·ft2}(°F/ft)
0.013
.026
.43
.096
.087
.114
. 043 .090 .087
.111
.120
.129 .090
.135
.025
. 036
. 041 • 43
1.8 2.1
0.62 .63
.4
3.0
.67 • 85
1.0
0.051
.077
.081
.106 .14
.16
.14
.19
.13
.34
. 58
. 65
.95
1.02
0.15
:26
.050
.113
2.2
1.6
I.I
10.7
9.2
8.0
7.0
6.3
1.3
1.7
0.4
.22
.43
.25
. 091
2.0 0.55
3.6
0.037
.12
.043
.OSI .n
3.4
2:9
0.55 . II
.20
.54
.-44
Material
Apparent
density
p, lb./cu.
ft. at I, "C. room
tempera-ture
Cotton wool........ . . --5--30 ~
Corl: board. . . . . . . . . . . . . . . . 10 30 025
Corl: (r<grsnulatcd). ·. · ·.. 6.1 30 :026 (ground) . . . . . . . . . . . . . . . . . . . . . . . . 9. 4 30 025 Diatomaceous earth powder, coarae (Note 2). .. . 20.0 36 · 036
20.0 1111 ·082 fine (Note 2) ........ .
molded pipe covering (Note 2) .....
4 vol. calcined earth and I vol. ccmcat, poured
aDd fired (Note 2) .........•.•...•.•.•.•.
Dolomite .................................. .
Ehonite ........•..... · · · · · · · · • · · · · • • · · · .. · · Enamel, silicate ............................ . Fdt, wool ...........•.....•................ Fiber insulating board ...................... . Fiber, red, •................................
(with binder, halced) ...................... . Gas carbon ................................ . Glass ..............•............•.......... BO<osilicatc type .......•....•............. Window gla.ss ••••••••••.•••••••••••••.•••• &daila..s ............................... . Granite ................................... . Graphite, lon£itudinal.. .•.................... powdered. ibrough 100 mesh ............... . G~ (molded and dry) .................. . Hair felt (perpendicular to fibers) ............ . Ice ....................................... . lnCusorial earth, oce diato1D&CCOUs tarth ....... . Kapok. ................................... . l.e.mphlacL .............................. .
L&va .•.•.•.•.......... ········ ······ ...... . Leather, eole ............................... . Limcstooe (15.3 vol. 3 R,O). .....•.......... Uneo ..................................... . ti:::l: ~t:r~~».::: :: : : :: :::::: :: : ~csium oxide ( compcessed) ..........•....
Marble .................. ·· .. · ... ··········· Mica (pcrpcadi<:ular to planes) ..•............. Mill .tl&vings ..•........•................... Mineral wool .•••.•.•••.•.•.•.•.•••.•.•...•.
Paper .................................... ..
Paraffin wax ............................... .
Petcolcom col:e ............................ .
P0<celain ....................... · ... ···· · .. · P0<1.land cement, aec c:onaete. ......•.........
Pumice atooe .............................. .
Pyroxylin plastice .......................... . Rubber~~::::::::::::::::::::::::::::::
:i;,,,,d (orv1 ................................ .
&;.-;;~~:::·.:·.:: :: :: :::: :: :::::: ::::: ::: :: :
Scale (Note I) ............................. .
Silk ....................................... .
nrnished ................•............... Sia& bla.t f nrnace .•..••••.•.•..••.•......
Slag wool .......................... · ·. · · · Slate .......................•...........
Snow ................................ .
suHur ~rl::hfcr~>::::: :: :: :: :: : : :: : : : : .
wall hoard. Wulating type ............. .
Wall 00..-d, still paste board ............ .
wood sh& vings ........................ . Wood (aa-°"' grain):
Balsa ........................... ·· .. · .. · -Oak .................................... . :t~l:.hii:.-.·.:::::::::::::::::::::::::::::
Teak ................................ .
White fir ..•....................•...... Wood (paralld to grain):
Pine ............................ · .. ··· Wool, animal ......................... .
17.2 204 "040
17. 2 671 :014
26.0 204 .OSI 26.0 671 .088
61.6 61.6 167
36
20.6 14.6
80.5
j39··.
. 30· ..
78
17
57 .5
0.88
10
"6iX
I03
-~.;)j"
13
49.9
9.4 19.7
74.6
~•.o
'"' 12
6.3
12
34.7
!4.6
43
6.6
7-ll
51.5 44.7 KO '40.0 28. I
34.4
6.9
204 671 50
··30
21
20 20-W
0-100
3():.7.S
20
"° 20
30 0
20
"°
.16
.23 t.o
0.10
0.S--0.75
0.03
.028 .11 .cm 2.0
0.2--0.73
0.63
0.3-0.61
0.3-().44
1.0-2.3 95.
0.11)4
.25
.021
1.3
0.020
.038
.49
""i4 :~2
30 .QS
47 .35
21 0.034
20 .32
• .. . 1.2-1.7 50 0.25
. • • . 0.033-0.05
30 0.0225 30 .024
0 100
500 200 90
2H6
.01S
.14
3.4
2.9
0.88
.17
.14 .075
0 .067 21 , ___ :11!9 .
21 ".,,...,,_092 .
.1ll o.1~~ ..., ""' 21 0.03
.. )8 .026 .096 2+-lll -~ 30 .022 94 .66 0 .27 100 0.@.-0.097 21 0.16 21 .028 30 .04 30 .O~
30 0.025--0.03 15 0.12 50 .It 15 .081 IS .10 60 .062
21 .20 30 .021
·,
• Marb, "Meclwllcal Enrineen.' Handbook." 4th ed, McGraw-Hill, New York. 1941. "lntcrn.atioiu! Critical Tables," McGraw-Hill, 1929, a.od other aoort<O. F0< o.dditioiu! data. ecc pp. ~~59. . /
Note I: B. Kamp [Z. f<ch. PAl,lriJ;, U, 30 (1931 ll shows the effect of ina..-1 pornsilf in decreasing thermal coaductiTity of boiler scale. Partridge [Ucivcroity of Michlgan, ERQ. llatarcA Bull. 15. 1930] h..s published a 170-page tceatise on FO<ID>.tion a.od Properties of Boiler Scale. Note :C To-.ni.hcad aDd W-UIWn., Chen.&: Mtt, 39, 219 (1932). Note 3: Norton, "Refractories," 2d ed" McGraw-Hill. New Y0<k, 1942. Note 4: N<rlon. private communicatioo.
KE-F: ?c;UY'.S Cl-\-EM.1c.AL crJC111\Je£12-s' H/\i00!3001c., t<=tiY,
{Q\tt Eo1nor0_
8
90
60
70
~\(,,vdLf: i
DIGITAL SOLUTION OF MODIFIED BERGGREN EQUATION
KEY
c
Btu/cu ft •F
~
40
20
16
NOTE Spttil;c lt~ol of soil solids css4P"<Nf to "" 0.JT Btu /6i_ •F
w
30
Figure 8. Average volumetric heal capaci!y for soils (afLer Aldrich and Paynter. 195-'11.
145 L L
140 ® Btu/cu ft T' w 1000
4000
130 30
>ooo
<OCO
KE.Y 20
120 )OCO
15
2-.ooo
110
·~·.c 10
w
·o;:.o O/o
lb/cu fl
t 5
>OO ..
-cc
)00
ec 2
1CX:
701 ·OO
F1~ure '-1. Vvlumecnc /arenl heal tor soils 1;ifrer Aldnch ;ind Pa.yncer. 19531.
TITANEnvironmental
By JFL Date 6117196 Subject ~E=F_,_N,__-_W~h=ite"-'M'-'-=e=sa,__ ________ Page_J_of_J1._
Chkd B~DateC\ {\\{°it,.. Effect of Freezing on Tailings Cover Proj No 6111-001
Appendix A
c; \efn-white\freeze2 .clc [9/11/96)
WEATHER STATIONS in Colorado:
Length
Design Mean of
Freezing Annual Freezing
Index Temp. Season
Station Location C'F days) (of) (days)
----------~-~----------------------------------
1 = z =
3 =
1 =
5 =
6 =
Alamosa 2271 11.3 159
Buckley ANGB 577 50.3 88
Colorado Springs 633 18.7 67
Denver 629 50.3 71
Grand Junction 1101 SZ.6 86
Pueblo 676 52.3 65
Enter the number representing the data you want;
(0 to input your own data):
LOCA T lON and WEATHER DA TA
Input weather data for your location in Colorado:
DESIGN AIR FREEZING Index (F-Days): 1101
MEAN ANNUAL TEMPERATURE (F): 19.8
LENGTH of FREEZING SEASON (Days): 86
CHOOSE an APPROPRIATE N-FACTOR
Surface Type
l = Portland' Cement (snow-free)
2.= Asp~a:lt<fsnow-free)
3<= SnolliL .. ·
1 ··= Sand~''dnd>Grauel (snow-free)
5· }.~ Turtl:c-srtow-free) , .' ~:r~-~~~ }~}~·:,
o· ·= To ,-_iip~t your own N-Factor
Enter ypur~·option: !.\
,:,,f•;~~. ' ,_:~~{~t . "
N-Factor *
(freezing)
0.75
0.70
1.00
0.70
0.50
* N-Factor uaries:with !attitude, wind speed, cloud cover, and other
climatic conditions.
INFORMATION for 'ii'i'ER 1:
Choose the appropriate soil type for this layer --
1 = Portland Cel'llent stabilized layer z = Asphalt stabilized layer
3 = Snow
1 = Course-grained soil
s = Fine-grained soil
6 = Insulating layer
7 = Organic soil
Enter your option: 5
LAYER PARAMETERS
Paral'lleters for LAYER L Fine-grained
Layer Th i clrness ( inches )
Moisture Content (% dry weight)
Dry Unit Weight 'Obs/cubic foot) ., , ·.'; ,
Heat Capacity C}ftu'Ycubic foot 0 f)
Therl'llal Conductiuity CBtu/foot hour 0 f)
Latent Heat of Fus;on (Btu/cubic foot)
*
*
Default
Ualues
12.0
17.0
122.0
29.5
0.90
* 2016.0
Ualues
Used
36.0
12.5
112.0
30.0
0 .19
2000
*recalculated based upon new MOISTURE CONTENT/WEIGHT ualue(s) .
. . . <return> for Def..,, It Ualues ...
Su111111ary: MODIFIED BERGGREN SOLUTION
Des i gn Freez i ng Index (A IR )
Design Freezing Index (SURFACE)
Mean Annual Temperature
Length of Freezing Season
=
=
=
=
1101
771
13. 8
86
F-days
F-days
OF
Days
LAVER FREEZING INDEX DISTRIBUTION
LAVER
tt: Type
THICKNESS
(inches) Each Layer Accu111 Berwrren
------Cctlculations
could not
converge
Surf <1.ce DF I
-----------End of Frost Penetration ----------------
1: Fine-grained < 6.8 145
TOTAL FROST PENETRATION = 6.8 inches
Do you want a hard copy of this data (V or default N)?
TITANEnvironmental
By JFL Date 6/17/96 Subject ~E~FN~-~W~h=i~te~M=e=s=a _________ PageJ_j_ofJt
Chkd B~ Date q/\\l'l \.? Effect of Freezing on Tailings Cover Proj No 6111-001
Appendix B
c: \e fn-white\ freeze2. clc [9/11/96)
-• !
• • •
• •• • • • I
• 1:
I'
(
I
,..,.
0
0 .....
w
0::
::::>
I-
<l:
0:: w Q
~
w
I-
MONTHLY MEANS AND EXTREMES
OF TEMPERATURES
BLANDING, UTAH
40 ANNUAL MEAN: 9.9°C
30
20
10
CA) MEAN DAILY MAXIMUM
(8) MEAN MONTHLY
(C) MEAN Dfi.IL Y MINIMUM
CD) FREEZE DATES
PL'-T°£ 2 .7-2
Material Type
Tailings
~om Flll
Clay
Clay
-12-
\A\L-\t0C--i) ~ \l._f+q::X>CM-"-fl\...L-((2.o\)2-iLUf..S
Table 3.4-1
Physical Properties of Tailings
and
Proposed Cover Materials
Atterberg
Limits Specific
LL fl Gravity
28 6 2.85
22 7 2.67
29 14 2.69
36 19 2.75
% Passing
No. 200
Sieve
46
48
56
68
Maximum
Ory Density
{pcf)
104.0
120.2
121.3
108.7
Note: Physical Soil Data from Chen and Associates (1987).
Optimum
Moisture
Content
18.1
11.8~
12.1
18.5
-ADVAHCcD T~RR~ TE~TIHQ-.nc -~ 833 Pariet Street
Lakewood. Colorado 80215
[phone]
140
135 -
130 -
125 -
120 -
c 0
0.. 115 ......... ->-~
(/) c (])
0 110 -
<::-
0
105 f--
100 -
95 -
90 -
85
0
Proctor Compaction Test
, , UT-1
\
\
\
\
I\ Zero Air Voids Cui
~\ ..... ~ 36-reporte&be
~
( ~\ /e ~~
I ~ ~
i ~ i
~
I I I
10 20 30
Moisture Content (%)
-Best Fit Curve o Actual Data
-Zero Air VoidsCurve @ SG = 2. 70
?f OPTIMUM MOISTURE CONTENT= 13.9 MAXIMUM DRY DENSITY= 113.5
ASTM D 1557 A, Rock correction applied? N
~e
IVVY
ADVANCED TERRA TESTING, INC.
40
APPENDIXF
Erosion Protection
...-....-----.... -..-..---~----:=-e e a:--::-;: Environmental
TIT AN Environmental
By _KQ__ Date~ Subject EFN White Mesa Mill Tailings Cover
Chkd By_fitL Date~ Design ofRiprap for Cover of Mill Tailings
PURPOSE:
Page_l_of_8_
Proj No 6111-001
Design of Erosion Protection layer of Rip rap for the Cover of Uranium Tailings
An erosion protection layer of rock riprap is required to protect the soil cover for the uranium mill
tailings at Blanding, Utah. The cover is supposed to have a design life of 1000 years according to
requirements set by U.S. Nuclear Regulatory Commission [Ref: "Final Staff Technical Position -
Design of Erosion Protection Covers for Stabilization of Uranium Mill Tailings Sites", 1990; U.S.
Nuclear Regulatory Commission (U.S.N.R.C.)]. Hence the erosion protection layer should be
designed accordingly. A design for the stone size and overall riprap thickness required for erosion
protection is provided in this document.
METHODOLOGY:
The design for rock riprap for protection of top and side slopes of the cover is based on the
guidelines provided by the following documents:
a) "Methodologies for Evaluating Long-Term Stabilization Designs of Uranium Mill Tailings
Impoundments" (NUREG/CR-4620), 1986; U.S. Nuclear Regulatory Commission
b) "Final Staff Technical Position -Design of Erosion Protection Covers for Stabilization of
Uranium Mill Tailings Sites", 1990; U.S. Nuclear Regulatory Commission (U.S.N.R.C.)
c) "Development of Riprap Design Criteria by Riprap Testing in Flumes"(NUREG/CR-4651),
1987; U.S. Nuclear Regulatory Commission
The top of the cover and the side slopes will be designed separately as the side slopes are much
steeper than the top of the cover. Overland flow calculations will be determined based on the
guidelines set by Nuclear Regulatory Commission and the site data. The size of the riprap placed on
top of the tailings cover will be determined using the Safety Factor method (NUREG/CR-4651),
while the Stephenson method (NUREG/CR-4651) will be applied for those placed along the side
slopes.
TIT AN Environmental
By ..Kfr. Date~ ~r;tct EFN White Mesa Mill Tailings Cover
Chkd By. Date l\ Design ofRiprap for Cover of Mill Tailings
A: Overland Flow Calculations
Page_2~of~8-
Proj No 6111-001
The methods for overland flow calculations are same for top and side slopes of the cover. The
results have been tabulated under Table IA and 2A respectively. The formulas, methodologies and
equations used for overland flow calculations are discussed in this part of the document. The
calculations are based on unit width of drainage area.
Average Slope 'S' and Length of drainage basin 'L': Figure I shows the direction of drainage for
cells 2, 3 & 4. Table IA calculates the flow parameters by varying slopes and slope lengths of cells
2, 3 & 4. Runoff and flow calculations have been provided for slopes ranging from O.OOI to 0.008
for cells 2 and 4 and from 0.001 to 0.005 for cell 3. As the slopes are very gentle, for each cell the
drainage length varies negligibly and hence has been considered constant for calculation purpose.
The drainage lengths have been measured from the site map. For erosion protection design of the
side slopes, a side slope of SH: IV and the maximum value of drainage lengths for cells 2, 3 & 4
have been considered (Table 2A).
Probable Maximum Precipitation (PMP): The I-hour local storm PMP for White Mesa is 7.76
inches (data from NOAA, 1977).
Time of Concentration of Rainfall. T~:
Lo.11 Lo.11
Tc= 0.00013 80385 hours= O.OOOI3
80
_385 x 60mins (Ref: Equation 4.44 in NUREG/CR-4620)
where, S = average slope of drainage basin and L = length of drainage basin in feet
The percentage of I-hour precipitation is obtained by interpolating from Table 2.I ofNUREG/CR-
4620. The minimum value of Tc used in this table is 2.5 minutes.
% PMP: The percentage for I-hour precipitation (PMP) is obtained by interpolating from table 2. I
of NUREG/CR-4620.
Rainfall Depth:
Precipitation Amount (inches)= % PMP x PMP =%of I-hour precipitation x PMP (Ref: Eqn. 2. I,
NUREG/CR-4620).
Precipitation intensity, 'i':
Precipitation intensity in inches/hour can be computed as (Ref: Eqn. 2.2, NUREG/CR-4620):
i =rainfall depth (inches) x (60 I {rainfall duration Tc (minute)}]
Runoff Coefficient. C: Runoff coefficient depends on climatic conditions, the type of terrain,
permeability, and storage potential of the basin. Runoff Coefficient has been assumed to be 0.8 for
TIT AN Environmental
By _KG_ Date 6/96 S~bkct EFN White Mesa Mill Tailings Cover
Chkd By~ Date qt\ Design of Riprap for Cover of Mill Tailings
Page_3_of_8_
Proj No 6111-001
the top of cover and the side slopes (Ref: Appendix D, section 2.4 (Example) in "Final Staff
Technical Position", U.S.N.R.C.).
Unit Area, A: Area of I-ft wide drainage basin
A= Length of drainage basin (ft.) x width (ft.)= L x 1 sq. ft.= [ Lxl/(43560)] Acres
Peak discharge per unit width for the drainage basin, q:
By Rational method, q = CiA, where C, i & A have their usual meanings [q in cu. ft./sec (cfs), i in
inches/hour and A in acres] (Ref: Eqns. 4.42 and 4.43, NUREG/CR-4620).
Flow Concentration Factor;
From section 4.9 of NUREG/CR-4620, " .. .it is reasonable to assume that values between 2 and 3
are attainable with only a slight evolutionary change in cover." Thus, a flow concentration factor of
3 and 2 have been assumed for top and side slopes respectively (as the top of cover is flatter than the
side slopes, it has been assumed that concentration of flow will be higher on the top than along the
side slopes).
Concentrated discharge per unit width for the drainage basin, q~:
qc (cu. ft./sec) = q x flow concentration factor
Manning's Roughness coefficient, n:
Assumed n = 0.03 for graded loam to cobbles (Ref: table 4.2, NUREG/CR-4620)
Depth of water, D:
3
Depth of water in ft., D = [ qc xFs]s (Ref: Eqn. 4.46, NUREG/CR-4620), where qc is in cu. ft./sec
1.486 s
Permissible Velocity:
The cover permissible velocity is between 5 to 6 ft./sec (Ref: section 4.11.3, NUREG/CR-4620)
Flow Velocity. V:
Using continuity equation,
discharge= velocity x cross-sectional area
:. qc = V x (D x unit width) = V x D x I
:. V(in ft./sec) = ~ Dx 1
For all the calculations provided in Table IA and 2A for top of cover and side slopes respectively,
V developed < V permissible
TIT AN Environmental
By ..KQ_ Date ...&.9.Q_ Subject EFN White Mesa Mill Tailings Cover
Chkd By~ Date ~)l\.\, Design ofRiprap for Cover of Mill Tailings
Page_ 4_of_8_
Proj No 6111-001
B: Calculation for Preliminary Size (Dso) of Rock Riprap used for Erosion Protection
B.J Preliminary Size (Dso) ofRiprap along Top of Cover
According to recommendations by U.S.N.R.C. [Ref: Appendix D, section 2.2 (step 5), "Final Staff
Technical Position"], recent studies have indicated that Safety Factor method is more applicable for
designing rock for slopes less than I 0%. The slopes along top of the cover for all the cells 2, 3 and 4
do not exceed I 0%. Hence the Safety Factor method has been adopted to calculate the median
diameter D50 of the rock particles used for riprap.
According to the Safety Factor method for determination of stone size, if the Safety Factor (S.F.) is
greater than unity, the riprap is considered to be safe from failure (Ref: Section 3.4.I,"Development
of Riprap Design Criteria by Riprap Testing in Flumes'', NUREG/CR-465I). For calculations to
determine the riprap size for top of cover, a safety factor of I. I has been assumed and the D50
corresponding to this safety factor has been computed. Table lB tabulates the results for the safety
factor method.
The equations 3.5 through 3.9 of NUREG/CR-4651 (see appendix) for Safety Factor method are
provided below :
cose tan~ SF= . . ................... eqn. A1 (eqn. 3.5 ofNUREG/CR-465I)
ri tan~+ sme cosP
, [I + sin (A. + P) J ll = ll
2
.......................... eqn. B1 (eqn. 3.6 ofNUREG/CR-4651)
2ho f I ll = ........................... eqn. C1 (eqn. 3.7 o NUREG CR-4651)
(Gs - 1 )y w x D so
't 0 =y wDS ........................................... eqn. D1 (eqn. 3.8 ofNUREG/CR-4651)
COSA p = tan-1 e ................... eqn. E1 (eqn3.9 ofNUREG/CR-4651) 2sin . 'l --+smf\,
ll tan~
where,
A, = angle between a horizontal line and the velocity vector compoment measured in the plane
of side slope (refer to fig. 3.lofNUREG/CR-4651)
e = side slope angle
s = side slope = tan e
~ =angle of repose (friction angle) of rock
TIT AN Environmental
By KG Date 6/96 ~ect EFN White Mesa Mill Tailings Cover
Chkd By--tlJt_ Date Design of Riprap for Cover of Mill Tailings
= bed shear stress
= representative stone size
=Specific gravity or relative density of the rock
= depth of flow
=specific weight of the liquid (in this case, water)
= stability numbers
Page_5_of_8_
Proj No 6111-001
=angle between vector component of the weight, Ws, directed down the side slope and the
direction of particle movement
For top of the cover, as slopes are very gentle, for all practical purposes, A can be considered to be
equal to zero (Ref: pg 22, NUREG/CR-465I)
Thus for A= 0: cos A= I, sin A= 0.
Hence, equation 3.9 ofNUREG/CR-4651 can be reduced to
-1[11 tan~ J p =tan . . ....................................... eqn E2 (eqn 3.10 ofNUREG/CR-465I) 2sm8
Also, equation 3.6 ofNUREG/CR-4651 can be reduced to
Yw
11'= 11[I + ~inp J .......................................... eqn. B2
= 40° (see Table 3)
= 2.48 (see Table 3)
3 = 62.4 lb./ft
The values for depth of water 'D' have been computed in Table IA. Table IB provides the
preliminary D50 size for each of cells 2, 3 & 4 by varying the slope and the length of the drainage
basin.
D:iQ calculated by CSU method
According to CSU method (Ref: NUREG/CR-4651, Phase-II),
D50 = 5.23 x (slope)°-43 x (discharge)0.s6
The results of D50 computed by CSU method have been included in table IB (values of discharge
have been computed in table IA to compare with those obtained by Safety Factor method.
TIT AN Environmental
By KG Date 6/96 S~~~ct EFN White Mesa Mill Tailings Cover
Chkd By__j}1f_ Date . Design of Riprap for Cover of Mill Tailings
B.2 Preliminarv Size (Dso) ofRiorap along Side Slopes
Page_6_of_8_
ProjNo 6111-001
According to recommendations by U.S.N.R.C. (Ref: Appendix D, section 2.2 (step 5), "Final Staff
Technical Position"), recent studies have indicated that Stephenson method is more applicable for
designing rock for slopes less than 10%. As the side slopes (5H: 1 V) have a value of S = 115 = 0.2 =
20%(> 10%), the Stephenson method (Ref: "Development of Riprap Design Criteria by Riprap
Testing in Flumes", NUREG/ CR-4651) will be most appropriate.
By Stephenson method, the median size for rock, D50 is given by the following equation (Ref: eqn.
3.15, NUREG/CR-4651):
where, qc
e
~
= Concentrated discharge in cu. ft./sec
=Slope angle= tan-1 (S) = tan-1 (0.2) = 11.31°
=Friction angle of the rock= 40° (see Table 3)
=Relative Density of the rock= 2.48 (see Table 3)
=Acceleration due to gravity= 32.2 ft./sec2
=Porosity of the rock= 0.30 (for sandstone) [Ref: (a) "Origin of Sedimentary
Rocks" and (b) Table 3
C = Empirical factor [ 0.22 for gravel/pebble and 0.27 for crushed granite]
Also, K =Oliver's constant [1.2 for gravel and 1.8 for crushed rock]
The results for qc from table 2A have been substituted into the above equation and the solution
tabulated in table 2B. The value of D50 has been multiplied by the Oliver's constant K to insure
stability.
Dfill calculated by CSU method
According to CSU method (Ref: NUREG/CR-4651, Phase-II),
D50 = 5.23 x (slope)0.43 x (discharge)0.56
The results of D50 computed by CSU method have been included in table 2B to compare with those
obtained by Stephenson method.
TIT AN Environmental
By KG Date ...fJ.fJ.Q_ Svbject EFN White Mesa Mill Tailings Cover
Chkd By~ Date~ Design ofRiprap for Cover of Mill Tailings
Page_7_of_8_
Proj No 6111-001
C: Oversizing ofRiprap based on durability and Overall Riprap Thickness
C.l Modification o_(Size (Dso) o(Riprap based on Durability
Tables 3 and 4 include the properties of the rock to be used as protective cover material. Based on
these values and according to the scoring criteria set by U.S.N.R.C. (Ref: Appendix D, sections 6.2,
6.2.1,6.2.2 and table D-1 in "Final Staff Technical Position"), a rock rating analysis has been
provided in Table 4. The results show a rock rating of 55.74%, which according to U.S.N.R.C. can
be used for non critical areas like top slopes and side slopes.
Thus the oversizing required= 80-55.74 = 24.26%
[ref: (a) Appendix D, section 6.2.2B, "Final Staff Technical Position"; U.S.N.R.C. (oversizing
required based on a 80-rating), (b) Appendix D, section 6.4 (example), "Final Staff Technical
Position" and (c) Table 4.
However a oversizing factor of 25 % has been used. Thus the nominal diameter D50 obtained in
tables lB and 2B has been multiplied with 1.25 to obtain a modified rock size D50 (tables IC and
2C).
C.2 Overall Riprap Thickness
According to the Safety Factor method, it is recommended that the riprap thickness be at least 1.5
times the D50 value whereas according to the Stephenson method the riprap thickness should be at
least 2 times the D50 value. The results based on the above recommendations are shown in tables 1 C
and 2C respectively.
RESULTS:
Results of the calculations have been tabulated under tables IA, IB, IC, 2A, 2B, 2C respectively.
TIT AN Environmental
By _KG_ Date 6/96 Subject EFN White Mesa Mill Tailings Cover
Chkd By __ Date Design ofRiprap for Cover of Mill Tailings
REFERENCE:
Page_8_of_8_
Proj No 6111-001
a) "Final Staff Technical Position -Design of Erosion Protection Covers for Stabilization of
Uranium Mill Tailings Sites", 1990; U.S. Nuclear Regulatory Commission (U.S.N.R.C.)
b) Methodologies for Evaluating Long-Term Stabilization Designs of Uranium Mill Tailings
Impoundments" (NUREG/CR-4620), 1986; U.S. Nuclear Regulatory Commission
c) "Development of Riprap Design Criteria by Riprap Testing in Flumes" (NUREG/CR-4651),
1987; U.S. Nuclear Regulatory Commission
d) National Oceanic and Atmospheric Administration (NOAA), 1977. Probable Maximum
Precipitation Estimates, Colorado River and Great Basin Drainages. Hydrometeorological
Report (HMR) No. 49.
e) "Origin of Sedimentary Rocks", second edition; Harvey Blatt, Gerard Middleton and Raymond
Murray
TIT AN Environmental
By KG. _Rate 6/96 Subject
Chkd By _f1lL Date 1/~
EFN White Mesa Mill Tailings Cover
Design of Riprap for Cover of Mill Tailings
TABLES
Page __ of __
Proj No 6104-001
TITAN ENVIRONMENTAL
Project#: 6111-001
Client: EFN, White Mesa
Location: Blanding, Utah
Overland Flow Calculations for Top Portion of the Cover
Table 1A: Calculat!on tor Runoff and Flow parameters
Maximum AYerage Dralnage Area Manning'• 1·hour Oetlgn
Length ''L" Slope per n. run Roughn•H precipitation Storm
Cell No of Drainage "S" A=Lx1n. Coetnclent amount
Basin n
(appx)
ft tt.ltt. sq. rt Acres Inches
1350 0.0080 1350 0.0310 0.03 7.76 PMP
1350 0.0072 1350 0.0310 0.03 7.76 PMP
2 1350 0.0070 1350 0.0310 0.03 7.76 PMP
1350 0.0060 1350 0.0310 0.03 7.76 PMP
1350 0.0050 1350 0.0310 0.03 7,76 PMP
1350 0.0040 1350 0.0310 0.03 7.76 PMP
1350 0.0030 1350 0.0310 0.03 7.76 PMP
1350 0.0020 1350 0.0310 0.03 7.76 PMP
1350 0.0010 1350 0.0310 0.03 7.76 PMP
1100 0.0050 1100 0.0253 0.03 7.76 PMP
1100 0.0040 1100 0.0253 0.03 7.76 PMP
3 1100 0.0030 1100 0.0253 0.03 7.76 PMP
1100 0.0020 1100 0.0253 0.03 7.76 PMP
1100 0.0013 1100 0.0253 0.03 7.76 PMP
1100 0.0010 1100 0.0253 0.03 7.76 PMP
1250 0.0080 1250 0.0287 0.03 7.76 PMP
1250 0.0070 1250 0.0287 O.Q3 7.76 PMP
4 1250 0.0060 1250 0.0287 0.03 7.76 PMP
1250 0.0057 1250 0.0287 O.Q3 7.76 PMP
1250 0.0050 1250 0.0287 0.03 7.76 PMP
1250 0.0040 1250 0.0287 O.Q3 7.76 PMP
1250 0.0030 1250 0.0287 0.03 7.76 PMP
1250 0.0020 1250 0.0287 0.03 7.76 PMP
1250 0.0010 1250 0.0287 0.03 7.76 PMP
Rainfall % of 1-hr.
Duration preclpltafon
(min.)
2.5 27.5
5 •5
10 82
15 7<
20 82
30 80
<5 05
80 100
Table 2.1 of NU REG 4820
WMARMOR2.XLS
Date: June 1996
Prepared by: KG
Checked by:
Time of
Concenlrltlon,Tc
C1loul1ted value Minimum Value
(using Eqn.4.44, v1lu1,b1tod Uted
NUREG <620) on table 2.1,
NUREG 4620
minutes minutes minutes
12.88 2.5 12.88
13.41 2.5 13.41
13.55 2.5 13.55
14.38 2.5 14.38
15.43 2.5 15.43
16.81 2.5 16.81
18.78 2.5 18.78
21.96 2.5 21.96
28.67 2.5 28.67
13.18 2.5 13.18
14.36 2.5 14.36
16.04 2.5 16.04
18.75 2.5 18.75
22.14 2.5 22.14
24.49 2.5 24.49
12.13 2.5 12.13
12.77 2.5 12.77
13.56 2.5 13.56
13.83 2.5 13.83
14.54 2.5 14.54
15.85 2.5 15.85
17.70 2.5 17.70
20.69 2.5 20.69
27.02 2.5 27.02
Peak Concentrated
%PMP Ralnfall Precipitation Runoff Flow Olscha~e Discharge Depth of Flow Permissible
•%of Hiour Deplh Intensity Coe1Tlclent Concontra· per unit per unit water, "O" V1loclty.V: Vefoc!ty
precipitation ·r "C" ion rt. width n. v.<dth (eqn. 4.'46, D!schargtt
(T•bl• 2.1, Factor q •CIA q, NUREG <620) c.s. Area
NUREG 4620
Inches Inches/hr. cu.n.tsee. cu.n.Jsec. n. n.11ec. ft./5ec
68.90 5.35 24.92 0.8 3 0.62 1.85 0.593 3.13
70.18 5.45 24.37 0.8 3 0.60 1.81 0.604 3.00
70.53 5.47 24.23 0.8 3 0.60 1.80 0.607 2.97
72.52 5.63 23.48 0.8 3 0.58 1.75 0.624 2.80
74.69 5.80 22.54 0.8 3 0.56 1.68 0.643 2.61
76.90 5.97 21,30 0.8 3 0.53 1.58 0.664 2.38
80.05 6.21 19.84 0.8 3 0.49 1.48 0.694 2.13
83,37 6.47 17.68 0.8 3 0.44 1.31 0.731 1.80
88.07 6.83 14.30 0.8 3 0.35 1.06 0.793 1.34
69.63 5.40 24.60 0.8 3 0.50 1.49 0.599 2.49
72.47 5.62 23.49 0.8 3 0.47 1.42 0.623 2.29 5-6
75.67 5.87 21.96 0.8 3 0.44 1.33 0.652 2.04
80.00 6.21 19,86 0.8 3 0.40 1.20 0.694 1.74
83.50 6.48 17.56 0.8 3 0.35 1.06 0.733 1.45
85,14 6.61 16.19 0.8 3 0.33 0.98 0.755 1.30
67.12 5.21 25.75 0.8 3 0.59 1.77 0.577 3.07
68.66 5.33 25.02 0.8 3 0.57 1.72 0.591 2.92
70.53 5.47 24.23 0.8 3 0.56 1.67 0.607 2. 75
71.18 5.52 23.97 0.8 3 0.55 1.65 0.612 2.70
72.90 5.66 23.34 0.8 3 0.54 1.61 0.627 2.57
75.35 5.85 22.14 0.8 3 0.51 1.52 0.649 2.35
78.32 6.08 20.60 0.8 3 0.47 1.42 0.678 2 09
82.48 6.40 18.56 0.8 3 0.43 1.28 0.719 178
86.92 6.74 14.98 0.8 3 0.34 1.03 0.778 1.33
TITAN ENVIRONMENTAL
Project f: 15111·001
Client EFN. ~lte Meu
Loc:1tton: Blanding, Utah
Rlprap Oulgn tor Top portion of the Cover
Table 1 B: CalculaHon for preliminary sizing of rlprap, 050
Specillc Bod Rook
Slone of Channel Depth of Wtlpt'llOI Sheu Spec: I tic Angle of
Cell No. s ' ftow,0 w•w Streu Grevly friction A ,. to•Y.,.OS G, • ft A\. <1•ore•s ft. lb./eutt b/9<1 ft ,,.~ .. df,nfHt
0.0090 0.458 0.693 82.4 0.296 2.49 40 0
0.0072 0.413 O.tl04 62.4 0.271 2.49 40 0
2 0.0070 Q.401 0.607 62.4 0.266 2.48 40 0
0.0060 0.3.U 0,82-4 62.4 0.233 2.49 40 0
0.0060 0296 0.643 82.<I 0.201 2.49 40 0
0.0040 0.229 0.864 62.4 0.166 2.49 40 0
0.0030 0.172 0.894 62.4 0.130 2.48 40 0
0.0020 0.115 0.731 62.4 0.091 2.48 40 0
0.0010 0.057 0.793 152.4 0.049 2.48 40 0
0.0050 0.286 0.699 62.4 0.187 2.49 40 0
0.00"40 0.229 o.e23 e2.4 0.158 2.48 40 0
3 0.0030 0.172 0.662 82.4 0.122 2.48 40 0
0.0020 0.115 o.e94 e2.4 0.087 2.48 <O 0
0.0013 0.074 0,733 82.4 0.059 2.48 40 0
0.0010 0.057 0.755 62.4 o.047 2.48 40 0
0.0080 0.458 0.677 62.4 0.299 2.48 40 0
0.0070 0.401 0.591 82.4 0.258 2.48 40 0
4 0.0060 0.344 0.607 62.4 0.227 2.48 40 0
0.0057 0.327 0.812 62.4 0.218 2.48 40 0
0.0050 o.2e6 0.627 82.4 0.196 2.48 <0 0
0.0040 0.229 0.649 62.4 0.162 2.49 40 0
0.0030 0.172 0.878 62.4 0.127 2.48 40 0
0.0020 0.115 0.719 62.4 0,090 2.49 40 0
0.0010 0.057 0.779 62.4 0.049 2.48 40 0
Table 1C: Diameter of Rlprap mod!hd based on durability, and Overall R.!prae Thickness
D~ Overtl.tlng Modified Thick no. Overall
Slope of buedon Factor b.11 ted on DlO ot Rlprap Rlprap
CeH No. channel S.11lery Roek Quality ;a~er layer Thlckneu
s Factor (from previout ovu•l:lng •1.5x0~ 1ugge1ted
Method report)
""' lnche1 lnche• inchet lnchet
0.0080 0.89 1.25 1.11 L67
0.0072 0.92 1.25 1.02 1.53
0.0070 0.80 1.25 0.88 1.48
2 0.0080 0.70 1.25 0.88 1.31
0.0050 0.60 1.25 0.75 1.13
0.0040 0.50 1.25 0.82 0.83
0.0030 0.39 1.25 0.49 0.73
0.0020 0.28 1.25 0.34 0.52
0.0010 0.15 1.25 0.19 0.28
0.0050 0.56 1.25 0.70 1.05
0.0040 0.47 125 0.59 0.87
3 0.0030 0.37 1.25 0.46 Q.68 3
0.0020 0.26 1.25 0.33 0.49
0.0013 0.18 1.25 0.22 0.33
0.0010 0,14 1.25 0.19 0.27
0.0080 0.97 1.25 1.08 1.62
0.0070 0.78 1.25 0.97 1.-45
0.0060 0.88 1.25 0.85 1.28
0.0057 0.66 1.25 0.82 1.23
' 0.0050 o.&9 1.25 o.73 1.10
0.0040 0.49 1.25 0.81 0.91
0.0030 0.38 1.25 0.-48 0.71
0.0020 0.27 1.25 0.34 0,51
0.0010 0.15 1.25 0.19 0.27
l/vMARMOR2.XLS
D1te: June 1 ;ge
Prepuad by: KO
Checked by:
cot & •lnB
1.000 0.000
1.000 0.007
1.000 0.007
1.000 0.006
1.000 0.006
1.000 0.004
1.000 0.003
1.000 0.002
1.000 0.001
1.000 o.oo•
1.000 o.oo•
1.000 0.003
1.000 0.002
1.000 0.001
1.000 0.001
1.000 0.008
1.000 0.007
1.000 0.006
1.000 0.006
1.000 0.005
1.000 0,004
1.000 0.003
1.000 0.002
1.000 0.001
COi l. tin A tan+
1.000 0.000 0.939
1.000 0.000 0.839
1.000 0.000 0.839
1.000 0.000 0.839
1.000 o.ooo 0.839
1.000 0.000 0.839
1.000 0.000 0.839
1.000 0.000 0.839
1.000 0.000 0.839
1.000 0.000 0.830
1.000 0.000 0.839
1.000 0.000 0.838
1.000 0.000 0.838
1.000 0.000 o.~9
1.000 0.000 0.839
1.000 o.ooo 0.839
1.000 0.000 0.839
1.000 0.000 0.838
1.000 0.000 0~39
1.000 0.000 0.838
1.000 0.000 0.838
1.000 0.000 0.839
1.000 0.000 0.838
1.000 0.000 0.839
"" by " Safet-1 Faetof method ...,.,., ..
0.89 0.074 0.907
0.82 0.068 0.908
0.80 o.oe6 0.910
0.70 0.068 0.910
Q.60 0.060 0.B12
0.60 0.041 0.812
0.39 0.033 0.909
0.28 0.0~ 0.906
0.16 0.012 0.812
0.6il 0.0'7 0.811
0.47 0.038 0.813
0.37 0.030 0.913
026 0.022 0.808
0.18 0.016 0.912 o.u 0.012 o.9oe
0.87 0.012 0.908
0.78 o.oes 0.808
Q.68 0.057 0.812
0.66 0.056 0.907
0.59 0.049 0.812
0.48 0.040 0.912
0.38 0.032 0.911
0.21 0.023 0.807
0.15 0.012 0.809
o ..
Safety by CSU
tanP p COi IJ "' Faetor method
~ lnchet
47.682 88.798 0.021 0.907 1.10 0.93
62.920 88.917 0.019 0.908 1.10 0.87
64.620 88.949 0.018 0.910 1.10 0.96
83,63.C 89.100 0.016 0.910 1.10 0.79
76.619 89261 0.013 0.912 1.10 0.72
96.661 89.401 0.010 0.912 1.10 0.63
127.126 89.649 0.008 0.909 1.10 0.63
199,97& SUDS 0.006 0.906 1.10 0.42
382.676 89.850 0.003 0.812 1.10 0.28
76.411 88.260 0.013 0.811 1.10 0.67
95.721 88.401 0.010 0.813 1.10 D.58
127.661 88.661 0.008 0.913 1.10 0.50
180.567 89.888 0.006 0.808 1.10 0.40
294.198 88.805 0.003 0.912 1.10 0.31
379.9·4" 89.849 0.003 0.906 1.10 0.27
47.680 88:789 0.021 0.909 1.10 0.00
6U50 88.948 0.018 0.908 1.10 0.84
63.742 88.101 0.010 0.812 1.10 0.77
68.776 88.142 0.016 0.807 1.10 0.75
76.531 88.251 0.013 0.812 1.10 0.70
86.62• 89,401 0.010 0.812 1.10 0.62
127.413 89.6&0 0.008 0.911 1.10 0.52
180.227 89.699 0.005 0.807 1.10 0.'1
380.792 88.950 0.003 0.908 1.10 0.27
TITAN ENVIRONMENTAL
Overland Flow Calculations for Side Slopes of the Cover
Table 2A Calculation for Runoff and Flow parameters
Maximum Average
Length, "L" Slope Drainage Area Manning's
of Drainage "S" per ft. run Roughness
Basin A=Lx11t. Coefficient
(appx) n
ft. ft.lft. sq. ft. Acres
275 0.2000 275 0.0063 0.03
Rainfall %of1·hr.
Duration precipitation
(min.)
2.5 27.5
5 45
10 62
15 74
20 82
30 89
45 95
60 100
WMARMOR2.XLS
Project#:
Client:
Location:
1-hour
precipitation
amount
inches
7.76
6111-001
EFN, 'Nhite Mesa
Blanding, Utah
Time of
Design Concentration, Tc
storm Calculated value Minimum value
(using Eqn.4.44, based on table 2.1,
NUREG 4620) NUREG 4620
minutes minutes
PMP 1.10 2.5
Date: June 1996
Prepared by: KG
Checked by:
% PMP
% of 1-hour
Value precipitation
used (Table 2.1,
NUREG 4620
minutes
2.5 27.5
Precipitation
Amount
Inches
2.13
Precipitation Runoff Flow
intensity Coefficient Concentra-
"j" "C" tion
Factor
inches/hr.
51.22 0.8 2
Peak Concentrated Depth of Flow Permissible
Discharge Discharge water, "O" Velocity,V = Velocity
per unit per unit (eqn. 4.46, Qischarae (sec. 4.11.3 of
ft. width ft. width NUREG 4620) c.s. Area (NUREG 4620)
q•CiA "' cu.fl/sec. cu.ft.Isac. ft. ft./ sec. ft./ sec.
0.26 0.52 0.105 4.93 5-6
TITAN ENVIRONMENTAL
Project#: 6111-001
Client: EFN, White Mesa
Location: Blanding, Utah
Rlprap Design for Side Slopes of the Cover
Table 2s· Calculation for preliminary sizing of riprap Pso
Slope of Channel Angle of friction Concentrated Relative density
for rock discharge per of Rock Porosity Type of
s 8 $ unit ft. width, qc G, n, Rip rap
ft.If!. degrees degrees cu. ft./sec
0.200 11.310 40 0.52 2.48 0.3 gravel/pebbles
0.200 11.310 40 0.52 2.48 0.3 crushed granite
Table 2C: Diameter of Riprap modified based on durabilitv and Overall Riprap Thickness
Dso Oversizing Modified Thickness Overall
Slope of based on Factor based on Dso of Riprap Riprap Type of
channel Stephenson Rock Quality after layer Thickness Riprap
s Method (from previous oversizing = 2 x Dso suggested
report)
ft.If!. inches inches inches inches
0.200 3.235 1.25 4.04 8.09 12 gravel/pebbles
0.200 4.234 1.25 5.29 10.58 12 crushed granite
VVMARMOR2.XLS
Stephenson
Constant tan e
c
0.22 0.200
0.27 0.200
Date: June 1996
Prepared by: KG
Checked by:
cos 8 tan$
0.981 0.839
0.981 0.839
Dso by Stephenson Method
(Eqn. 4.28 of
NUREG 4620)
ft. inches
0.22 2.70
0.20 2.35
Olivers Modified Dso based
Constant Dso on CSU
K method
inches ft.
1.2 3.235 1.81
1.8 4.234 1.81
I'
• • I
I
I
I
I
I
I
I
I
I
' ' '
'
!!ll3LE 3
WHITE MESA CHANNEL A ROCK APRON
RIPRAP SIZING -STEPHENSON'S METHOD
ENTER
UNIT FLOW RATE •q•
ROCKFILL POROSITY -n
SLOPE ANGLE
FRICTION ANGLE
SPECIFIC GRAVITY OF ROCK
4.27 CFS/FT
0.3
11.3 DEGREES
~EGA§§~
B
WITH 24%
OVERSIZE
D-100 (BASED ON 1.25xD50)
D-50
12.00 INCHES 14.aa·
9:60 INCHES 12.6·
WHITE MESA CHANNEL B ROCK APRON
RIPRAP SIZING -STEPHENSON'S METHOD
UNIT FLOW RATE •q•
ROCKFILL POROSITY - n
SLOPE ANGLE
FRICTION ANGLE
SPECIFIC GRAVITY OF ROCK
D-100 (BASED ON 1.5xD50)
0-50
ENTER
3.26 CFS/FT
~
11.3 DEGREES
40 DEGREES
2.48
12.03 INCHES
8.02 INCHES
14.9"
9_94•
T-JJ!3LE '/
NRG SCORING CRITERIA FOR DETERMINING ROCK QUALITY
WHITE MESA ROCK PROTECTION
ROCK1YPE
Limestone = 1
Sandstone= 2
Igneous= 3
LABORATORY TEST
Specific Gravity
Absorption, %
Sodium Sulfate, %
UAAbrasion (100 revs),%
Schmidt Hammer
Tensile Strength, psi
ROCK RATING,%
RATING ANALYSIS:
2]
TEST
RESULT
2.48
1.75
0.60
8.40
0.00
0.00
55.741
Critical Areas-REJECTED
Oversizing, % =
SCORE*
SCORE WEIGHT WEIGHT
4.60 6 27.60
3.50 5 17.50
10.00 3 30.00
5.94 8 47.53
0.00 13 0.00
0.00 4 0.00
Non-Critical Areas-OVERSIZING REQUIRED
Oversizing, % = 24
MAX.
SCORE
60.00
50.00
30.00
80.00
0.00
0.00
TIT AN Environmental
By KG pjte 6/961u~ect
Chkd By_k1_'t\-Date ~
EFN White Mesa Mill Tailings Cover
Design of Riprap for Cover of Mill Tailings
FIGURE
Page __ of __
Proj No 6104-00 I
I +'. •
. ~ ;
CELL 1-I
CELL 2 I
WHITE MESA PROJECT
SITE DRAINAGE
Fl(jVR.£: I
--I
f
I i: . !i
I
"
TIT AN Environmental
By KG Date 6/96 ilibject EFN White Mesa Mill Tailings Cover
Chkd By ~ Date '1 LP Design of Riprap for Cover of Mill Tailings
APPENDIX
Page __ of __
Proj No 6104-001
...
~ ~'. f,"'.).:·..:: .·
FINAL
STAFF TECHNICAF.'POSITIOM .· · .. ,,,
DESIGN OF "ER6SION·; PROTBN"IOH COVERS FOR .
STABILIZATIOH OF URANIUM KI(k"'fAILINGS-Sii:Es..:.
U. S. -·H~ear· Regulatory COC!Clission:-.
L',:. A'ugust 1990
1. INTRODUCTION
FINAL
STAFF TECHNICAL POSITION
DESIGN OF EROSION PROTECTION COVERS FOR
STABILIZATION OF URANIUM HILL TAILINGS SITES
Criteria and standards for environmental protection may be found in the
·Uranium Mill Tailings Radiation Control Act (UMTRCA) of 1978 (PL 95-604) (see
Ref. 1) and 10 CFR Section 20.106, "Radioactivity in Effluents to Unrestricted
Areas.11 In 1983, t~ U. S. Environmental Protection Agency (EPA) established
standards (40 CFR Part 192) for the final stabilization of uranium mill
tailings for inactive (Title I) and active (Title II) sites. In 1980, the
United States Nuclear Regulatory Commission (NRC) promulgated regulations (10
CFR Part 40, Appendix A) for active sites and later revised Appendix A to
conform to the standards in 40 CFR Part 192. These standards and regulations
establish the criteria to be met in providing long-te:""m stabilization.
These regulations also prescribe criteria for control of tailings. For
the purpose of this staff technical position (STP), control of tailings is
defined as providing an adequate cover to protect against exposure or erosion
of the tailings. To he 1 p 1 i censees and app 1 icants meet Federa-1 guidelines,
this STP describes design.practices the NRC staff has found acceptable for
providing such protection for 200 to 1000 years and focuses principally on the
design of tailings covers to provide that protection.
Presently, very little infonnation exists on designing covers to remain
effective for 1000 years. Numerous exaaples can be cited where covers for
protection of tailings e.bankments and other applications have experi_enced
significant erosion over relatively short periods (lc::ss than 50 years).
Experience with recla.ation of coal-•ini09 projects, TOr example, indicates
that.it is usually necessary to provide relatively flat slopes to maintain
overall site stability (Wells and Jercinovic, 1983, see Ref. 2).
Because of the basic lack of design experience and technical information
in this area, this position attempts to adapt.standard hydraulic design methods
and e«ipirical data to the design of erosion protection covers. The design
methods discussed here are based either Qn: (1) the use of doclaented
hydraulic procedures that are generally applicable in any area of hydraulic
design; or (2) the use of procedures developed by technical assistance
contractors specifically for long-tena stability applications.
It should be emphasized that a standard industry practice for stabilizing
tailings for 1000 years does not currently ~ist. However, standard practice
does exist for providing stable channel sections. This practice is widely used
to design drainage channels that do not erode when subj•cted to design flood
flows. Since an embankment slope can be treated as a wide channel, the staff
concludes that the hydraulic design principles and practice associated with
1
2.1.2 Long-Tenn Stability
As required by 40 CFR 192.02 and 10 CFR Part 40, Appendix A, Criterion 6
' stabilization designs must provide reasonable assurance of control of
radiological hazards for a 1000-year period, to the extent practicable, but in
any case, for a •inietm 200-year period. ·The NRC staff has concluded that the
risks froca tailings could be accoaaodated by a design standard that requires
that there be reasonable assurance that the tailings remain stable for a period
of 1000 (or at least 200) years, preferably with reliance placed on passive
. controls (such as earth and rock covers), rather than routine maintenance.
2.1.3 Design for Minimal Maintenance
Criteria for tailings stabilization, with minimal reliance placed on
active maintenance, are established in 40 CFR Part 192 and 10 CFR Part 4-0,
Appendix A, Criteria l and 12. Criterion 1 of 10 CFR Part 4-0, Appendix A
specifically states that: 11Tailings should be disposed of in a manner [such]
that no active maintenance is required to preserve conditions of the site."
Criterion 12 states that: "The final disposition of tailings or wastes at
milling sites should be such that ongoing active caa·intenance is not necessary
to preserve isolation.11
It is evident that remedial action designs are intended· to last f-0r a long
time, without the need for active aaintenance. Therefore, in accordance with
regulatory requiret1ents1 the HRC staff has concluded that the goal of any
design for long-term sta.bil ization io iaeet applicable design criteria should be
to provide overall site stability for very long ti11e periods, with no reliance
placed on active maintenance.
For the purposes of this STP, active maintenance is defined as any
maintenance that is needed to assure that the design will meet specifi~
longevity requfn!Mnts. Such aaintanance includes even ainor mintenance, such
as the addition of soil to saall rills and gullies. The question that 11ust be
answered is whet.her longevity. is dependent on the aaintanance. If it is
necessary to repair gullies, for exuple, to prevent their growth and ulticate
eros 1 on into ta. 11 i ngs • t.Mn that u intenance is cons 1 de red to be active
ma i ntenance.
2.1.4 Radon Release Li•its
Titles 4-0 CFR 192.02 and 10 CFR Part 40, Appendix A require that earthen
covers be placed over tailings at the end of •illing operations to limit
releases of radon-222 ~ not more than an aver~ge of 2Q picocuri•~ per square
·meter per second (pCi/• s), when averaged over t~ entire surface of the
disposal site and over at least a one-year period, for the control period of
200 to 1000 years. Before placenH!nt of the cover, radon release .rat.es are
calculated in designing the protective covers and barriers for uranium mill
tailings. Additionally, recent regulations proaKJlgated under the Clean Air Act
3
design fo.llows the procedure for a soil cover, because the layer is
predominantly soil, rather than rock.
2.2 Design Procedures
A step-by-step procedure for designing riprap for the top and side slopes
of a reclaimed pile is presented below:
Step 1. Determine the drainage areas for both the top slope and the side
slope. These drainage areas are normally computed on a unit-width
basis.
Step 2. 'Determine time of concentration (tc).
Step 3.
The tc is usually a difficult para.meter to estimate in the design of
a f"9Ck layer. Based on a review of the various methods for
calculating tc, the HRC staff concludes that a iaethod such as the
Kirpich method, as discussed by Nelson, ~t al. (1986, see Ref. 02),
should be used. The tc may be calculated using the fonnula:
where l = drainage length (in miles)
H = elevation difference (in feet)
O~tenaine Probable Haxi=Ut!l Flo Jd (P"4F) and Probable Maximum
Prec1p1ta.tian (PM?).
Techniques for PMP determinations have been developed for the entire
United States, primarily by the National Oceanographic and
Atmospheric Administration, in the form of hydromet.corological
reports for specific regions. Tlwse techniques are COftrl'IOnly accepted
and provide straightforward procedures for asses!'>ing rainfall
po~ential, with minimal variability. Acceptable methods for
0-3
determining the total magnitu~ of the PMP and various PHP
intensities for specific times of concentration are given by Nelson,
et al. (1986, see Ref. 02, Section 2.1).
Step 4. Calculate peak flow rate.
Step 5.
The Rational Formula, as discussed by Helson et al. (1986, see Ref.
02), may be used to calculate peak flow rates for these small
drainage areas. Other methods that are more precise are also
acceptable; the Rational Formula was chosen for its simplicity and
ease of computation:
Oetennine rock size.
Using the peak flO'tot rate calculated in Step 4, the required 050 may
be determined. ·Recent studies performed for the HRC staff (Abt,
et al., 1988, see Ref. 03) have indicated that the Safety Factors
Hethod is llOre applicable for cesigning N?CK for slopes less than 10
percent and that the Stephenson Method is mq_re applicable for slopes
greater than 10 percent. Other methods may also ~ used, if properly
justified.
2.3 Recoanendations
Since it 1s unlikely that clogging of the riprap voids will not occur over
a long period of time, it is suggested that no credit be taken for flow through
the riprap voids. Even if the voids become clogged, it is unlikely that
stability will be affected, as indicated by tests perfortn{!d for the NRC staff
by Abt, et al. (1987, see Ref. 04).
It rounded rather than angular rock is used, some increase in the average
rock size may be necessary, since the rock will not be as stable.
Computational models, such as the Safety Factors Kethod, provide stability
D-4
coefficients for different angles of repose of the material. The need for
oversizing of rounded rock is further discussed by Abt, et al. (1987, see Ref.
04).
2.4 Example of ProceduN! Application
Determine the riprap requirements for a tailings pile top slope with a
length of 1000 feet and a slope of 0.02 and for the side slope with an
additional length of 250 feet and a slope of 0.2 (20 percent).
Step 1. The drainage areas for the top slope (Al) and the side slope
(A2) on a unit-width basis are computed as follows:
Step 2.
Al = (1000) (1) I 43560 = 0.023 acres
A2 = (1000 + 250) (1) I 43560 = 0.029 acres.
The tcs are individually computed for the top and side
slopes, using the Kirpich Hetho~, as discussed by Nelson, et al.
(1986, see Ref. 02).
tc = [(ll.9)(L)3/H]"385
For L = 1000 feet and H = 20 fe~t.
tc = 0.12 hours= 7.2 minutes for the top slope
For L = 250 feet and H = 50 feet,
tc = 1.0 minut~ for the side slope.
0-5
Step 3.
Step 4.
Step 5.
Therefore, the total tc for the side slope is equal to 7.2 + 1.0, or
8.2 minutes.
The rainfall intensity is determined using procedures discussed
by Nelson, et al. (1986, see R~~-02). baseq on a 7.2-minute PMP of
4.2 inches for the top slope and an 8.2-minute PMP of approximately
4.5 inches for the side slope. These incre«iental PHPs are based on a
one-hour PMP of 8.0 inches for northwestern N~ Mexico and were
derived using procedures discussed by Nelson, et al. (1986, see Ref.
02).
Rainfall intensities, for use in the Rational Formula, are computed
as follows:
i 1 = (60)(4.2)/7.2 = 35 inches/hr for the top slope
i 2 = (60)(4.5)/8.2 = 33 inches/hr for the side slope.
Assuming a runoff coefficient (C) of 0.8, the peak flow rates are
calculated using the Rational Formula, as follO'ftS:
Ql = (0.8} (35) (0.023) = 0.64 cfs/ft, for the top slope, and
Q2 ~ (0.8) (33) (0.029) = 0.77 cfs/ft, for the side slope.
Usi09 tll4 Safety Factors Kethod, the require-0 ro<:k size for the
pile top slope is calculated to be:
050 = 0.6 inches.
Using the Stephenson Kethod, the required rock size for the side
slopes is calculated to be:
0-6
050 = 3.1 inches.
2. 5 Limitations
The use of the aforetnentioned procedures is widely applicable. The
Stephenson Method is an empirical approach and is not applicable to gentle
· slopes. The Safety factors Method is conservative for steep slopes. Other
methods may also be used, if properly justified.
3. RlPRAP DESIGN FOR DIVERSION CHANNELS
3.1 Technical Basis
The Safety Factors Method or other shear stress methods are generally
accepted as reliable methods for determining riprap requirements for channels.
These methods are based on a COtnParison of the stresses exerted by the flood
flows with the allowable stress permitted by the ~ck. Ooc~nted methods are
readily available for determining flow depths and Manning un" values.
3.2 Design Procedures
In d4!sign1ng the riprap for a diver1ion channel where there a~ no
particularly difficult erosion considerations, the design of the erosion
protection is relatively straightforward.
1. The Safety fact.ors ~th<Xi or other shear st~ss snethods 111a.y be used
to detenDine the riprap requirements.
Z. The peak shear stf'Css should be used for design purposes and can be
deterE.ined ty substituting the value of the depth of flO'wi (y) in thQ shear
0-7
6. OVERSIZING OF MARGINAL-QUALITY EROSION PROTECTION
6.1 Technical Basis
The ability of scene rock to surviv~ without significant degradation for
long time periods is well-.documented by archaeological and h1storic evidence
(Lindsey, et al., 1982, see Ref. 013). However, very little information is
available to quantitatively assess the quality of rock needed to survive for
long periods, based on its physical properties.
In assessing the long-term durQbility of erosion protection materi~ls, the
N~C staff has relied principally on the results of durability tests at several
sites and on information, analyses, and methodology presented in HUREG/CR-4620
(Nelson, et al., see Ref. 02). This document provides a quantitative method
for determining the oversizing requirements for a particular rock type to be
placed at specific locations on or near a remediated uranium mill tailings
pile.
Staff review of actual field data from several tailings sites has
indicated that the methodology ~ay not be sufficiently flexible to all()\o( the
use of "borderline" quality rock, where a particular type of rock fails to meet
minimum qualifications for placement in a specific zone, but fails to quality
by only a small amount. This ~ay be very iiaportant, since the selection of a
particular rock type and rock size depends on its quality and where it will be
placed on the embankment.
Based on HRC staff revie-« of the actual field data, the methodology
previously derived has been IJl(Jditied to incorporate additional flexibility.
These revisions include modifications to the quality ratings required for use
in a particular placement zone, re-classification of the placement zones,
reassessment of weighting factors based on the rock type, and more detailed
procedures for computing rock quality and the aJ!lount of oversizing required.
0-23
Based on an examination of the actual f1eld perfonnance of various types
and quality of rock (Esmiol, 1967, see Ref. 014), the NRC staff considers it
important to determine rock properties with a petrographic examination. The
case history data indicated that the singlemost important factor in rock
deterioration was the presence of smecti-~s and expanding lattice clay
minerals. Therefore, if a petrographic examination indicates the presence of
·such minerals, the rock will not be suitable for long-term applications.
6. 2 Des ·i gn Procedures
Design procedures and criteria have been developed by the HRC staff for
use in selecting an<f evaluating rock for use as riprap to survive long time
periods. The methods are considered to be flexible enough to accommodate a
wide range of rock types and a wide range of rock quality for use in various
long-term stability applications.
The first step in the design process is to determine the quality of the
rock, based on its physical properties. The second step is to detennine the
amount of oversizing needed, if the rock is not of good quality. Various com-
binations of good-quality rock and oversized marginal-quality rock may also be
considered in the design, if necessary.
6.2.l Procedures for Assessing Rock Quality
The suitability of rock to be used as a protective cover should be
assessed by laboratory tests to determine the physical characteristics of th~
rocl<..s. Several durability tests should be perfonr.ed to classify the rock as
being of poor, fair (inten11ediate), or good quality. For each rock source
under consideration, the quality ratings should be based on the results of
about three to four different durability test methods for initial screening and
about six test ~thods for final sizing of the T"Qck(s) selected for inclusion
in the design. Procedures for determining the T"QCk quality and determining a
rock quality "scor~" are developed in Table DL
0-24
6.2.2 Oversizing Criteria
Oversizing criteria vary, depending on the location where the rock will be
placed. Areas that are frequently saturated are generally more vulnerable to
weathering than occasionally-saturated .area' where freeze/thaw and '«et/dry
cycles occur less frequently. The amount·of overshing to be applied will also
·depend on where the rock will be placed and its importanc• to the overall
performance of the recl.am.ation design. For the purposes of rock oversizing.
the following criteria have been developed:
A.
B.
Critical Areas.
Rating
80-100
65-80
These areas include, as a mini~U11. frequently-
saturated areas, all channels, poorly-drained toes and
aprons, control structures, and energy dissipation
areas.
No Oversizing Heeded
Oversize using factor of (SO-Rating), expressed as the
percent increase in rock diameter. For example, a rock with
a rati~ of 70 will require oversizing of 10 percent. (See
exasaple of procedure application, given in Section 6.4, p.
0-28)
Less than 65 -Reject
Non-Critical A~~5. Th~se areas include occasionally-saturated
a~daS, top Jlop~~. side slopes, and ~11-drained
toes and aprons.
0-25
Rating
80-100
50-80
No Oversizing Heeded
Oversize using facto.r of (80-Rating), expressed as the
percent increase in rock diameter
Less than 50 -Reject
0-26
'1"0LE Ul
Scoring Criteria· for Deterilining Rock Quality
Weighting Factor
Laboratory
Test Lines tone Sandstohe Igneous
Sp. Grav Hy
Absorption, ~
Sod1Ull
Sulfate, %
12
13
L/A Abrasion
(100 revs), % 1
Sch~idt Hanner 11
Tensile Strength,
ps1 6
6 9
5 2
3 11
8 1
13 ? .
10
Score 7 6 5 10 9 8 Go·oa Fair
2.75 2.70 2. 65 2. 60 2.55 . 2. 50 .
.1 . 3 .5 .67 .83 1. 0
1.0 3.0 5.0 6.7 8.3 10.0
1.0 3.0 5.0 6.7 8.3 10.0
70.0 65.0 60.0 54.0 47.0 40.0
1400 1200 1000 833 666 500
3 2 1 0 Poor
2. 45 2.40 2.35 2.~o 2.25
1.5 2.0 2.5 3.0 3.'
12.5 15.0 20.0 25.0 30.0
12.5 15.0 20.0 25.0 30.0
32.0 24.0 16.0 8.0 o.o
~00 300 200 100 0
l. scores were derived frOJI Tables 6.2. 6.5. and 6.7 of HUREG/CR-2642 -•Long-Terti Survivability of Riprap for Annnring
uraniulll Hil1 Tailings and Covers: A Literature· Review.• 19.82 (see Ref. 013).
2.
3.
weighting factors are derived fro~ Table 7 of •petrographic Investigations of Rock Durability and co~parisons of
Various Test Procedures. by 6. W. OuPuy. En~ineering ... GeoloS,l. July. 1965 {see Ref. 015). Weighting factors are
based on inverse of ranking of test methods or eacn rock type. Other tests nay be used; weighting factors for ·
these tests ~Y be derived using Table 7. by counting uprlll'ard fro11 the botto11 of the table. / /
Test ~thods should be standardized. if a standard test is available and .should be those used fn HUREG/CR-264{(see
Ref. 013), so that proper correlations can be asade. This is particularly f~portant for the tensile strength test
where several methods IM1Y be used; the r>ethod discussed by Hilsson (1962. see Ref. 016) for tensile strength °"as •
used in the scoring procedure.
D-27
6.3 Recommendations
Based on the performance histories of various rock types and the
overall intent of achieving long-t~rm stability, the following recommenda-
tions should be considered in assessing rock quality and determining
riprap i"equi rements for a .Particula·r design.
1. The rock that is to be used should first be qualitatively rated at least
11 f.air11 in a petrographic examination conducted by a geologist or. engineer
experienced fo petrographic analysis. See NUREG/CR-4620, Table 6.4 (see
Ref. 02), for general guidance on qualitative petrographic ratings. In
addition, if a rock contains smcctites or expanding lattice clay minerals,
it wfll not be acceptable.
2. An occasionally-saturated area is defined as an area with underlying
filter blankets and slopes that provide good drainage and are steep enough
to preclude ponding, considering differential settlement, and are located
~11 above normal groundwater levels; otheni<ise, the area is classified as
frequently-saturated. Natural channels and relatively flat man-made
diversion channels should be classified as frequently-saturated.
Generally, any toe or apron located bek"' grade should be classified as
frequently-saturated; such toes and aprons are considered to be
poorly-drained in 110st cases.
3. Using the scoring criteria given in Table 01, the results of a durability
test determines the score; this score is then multiplied by the weighting
factor for the particular rock type. The final rating should be
calculated as the percentage of the maximum possible score for all
durability tests that were performed. See example of procedure
application for additional guidance on determining final rating.
4_ For final selection and oversizing, the rating may be based on the
durability tests indicated in the scoring criteria. Other tests may also
0-28
be substituted or added, ~s appropriate, depending on rock type and site-
specific factors. The durability tests given in Table 01 are not intended
to be all-inclusive. They represent some of the more coanonly-used tests
or tests where data may be published or readily-availa.bl•. Designers may
wish to use other tests than those presented; such an approach is
acceptable. Scoring criteria may be developed for other tests, using
procedures and references recoaxnended in Table 01. Further, if a rock
type barely fai.ls to meet minimuai criteria for placement in a particular
area, with proper justification and documentation, it may be feasible to
throw out the results of a test that may not be particularly applicable
and substitute one or more tests with higher ~ightihg factors, depending
on the rock type or site location. In such cases, consideration should be
given to performing several additional tests. The additional tests should.
be those that are among the most applicable tests for a specific rock
type, as indicated by the highest weighting factors given in the scoring
criteria for that rock type.
5. The percentage increase of oversizing should ~ applied to the diameter of
the rock.
6. The oversizing calculations represent 11dni11um increases. Rock sizes as
·large as practicable should be provided. {It is asst.JMe<i, for exacple,
that a 12-inch layer of 4-inch rock costs the sa.e as a 12-inch layer of
6-inch rock.) The thickness of the rock la.yer should be base<i on the con-
struct.ability of the layer, but should b• at least 1.5 x o5J. Thicknesses
of le~s than 6 inches ~ be difficult to construct, unless the rock size
is relatively small.
6.4 Example of Procedure Application
It is proposed that a sandstone rock source wi11 be used. The rock has been
rated "fair" in a petrographic .::xaminat~on. R2prescntative ust results <!.re
given. COl'tlpute the amount of oversizing necessary.
0-29
Using the scoring criteria in Table 01, the following ratings are computed:
lab Test Result Score Weight Score x Weight Max. Score
Sp~ Gr. 2.61 7 6 42 60
Absorp •• x 1.22 4 5 20 so
Sod. Sulf., x 6.90 6 3 18 30
L.A. Abr., % 8.70 5 8 40 80
Sch. Ham. 51 6 13 78 130
Tens. Str .• psi 670 6 4 24 40
. Tot.al s 390
The final rating is computed to be ~~2/390 or 57 percent. As discussed in
Section 6.2, the rock is not suitable for use in frequently-saturated areas,
but is suitable for use in occasionally-saturated areas, if oversized. The
oversizing needed is equal to (80 -57), or a 23 percent increase in rock
diameter.
6. 5 Limitations
The procedure previously presented is intended to provide an approximate
quantitative method of assessing rock quality and rock durability. Although
t~ procedure should provide rock of reasonable quality, additional data and
studies are needed to establish performance histories of rock typ~s that have a
score of a specific magnitude. It should be emphasized that the procedure is
only a more quantitative estimate of rock quality, based on USSR classification
standards.
0-30
It should also be recognized that durability tests are not generally
intended to determine if rock will actually deteriorate enough to adversely
affect the st<ibility of a reclaimed Llilings pile for a design life of 200 to
1000 years. These tests are primarily 1ntended to determine acceptability Of
rock for various construction purposes for design lifetimes much shorter than
1000 years. Therefore, although higher;scores give a higher ~egree of
.confidence that significant deterioration will not occur, there is not complete
assurance that deterioration will not occur. Further, typical construction
projects rely on planned maintenance to correct deficiencies. It follows,
then, that there is also less assurance that the oversizing methodology will
actually result in rock that will on~y deteriorate a given amount in a
specified time period. The amount of oversizing resulting from these
calculations is based on the engineering judgment of the NRC staff, with tM
assist<ince of contractors. However, in keeping with the Management Position
(USNRC, 1989, see Ref. 017}, the staff considers that this methodology will
provide reasonable assurance of the effectiveness of the rock over the design
lifetime of the project.
0-31
7. REFERENCES
01. Nelson et al., "Design Considerations for Long-Tenn Stabilization of
Uranium Mill Tailings Impoundments," NUREG/CR-3397 (ORNL-5979), U.S.
NuclP.ar Regulatory Coaxnission, Washington, O.C., 1983.
02. Nelson, et al., 11Hethodologies for Evaluating long-Tenn Stabilization
Designs of Uranium Hill Tailing Impoundments,11 NUREG/CR-4620, 1986.
03. Abt, S. R., et al., 110evelopment of Riprap Design Criteria by Riprap
Testing in Flumes: Phase II," NUREG/CR-4651, Vol. 2, 1988.
04. Abt, .. S. R., et al., 110evelopment of Riprap Design Crit~ria .by Riprap
Testing in Flumes: Phase I," NUREG/CR-4651, Vol. 1, 1987.
05. U.S. Anny Corps of Engineers (USCOE), 11Hydraulic Design of Flood Control
Channels,11 EM lll0-2-1601, Office of the Chief of Enginee~. Washington,
o.c., 1970.
06. ChO'fi, V. T., Open-Channel Hydraulics, McGraw-Hill Book Company, Inc., New
York, H.Y., 1959.
07. U.S. AT'fffY Corps of Engineers (USCOE), Hydrologic Engineering Center,
"Water Surface Profiles, HEC-2," continuously updated and revised.
08. U.S. Oepart..ment of Transportation (USOOT), "Hydraulic Design of Energy
Oissipators for Culverts and Channels," Hydraulic Engineering Circular Ho.
14. 1983.
09. U.S. Bureau of R~clamation (USBR), Design of Sm311 Dams, 1977.
0-32
Methodologies for Evaluating
Long-Term Stabilization
Designs of Uranium Mill
Tailings Impoundments
Manuscript Completed: May 1986
Date Published: June 1986
Prepared by
J. 0. Nelson, S. R. Abt, R. L. Volpe, D. van Zyl, Colorado State University
N. E. Hinkle, W. P. Staub, Oak Ridge National Laboratory
Colorado State University
Fort Collins, CO 80523
Under Contract to:
Oak Ridge National Laboratory
Oak Ridge, TN 37831
Prepared for
Division of Waste Management
Office of Nuclear Material Safety and Safeguards
U.S. Nuclear Regulatory Commission
Washington, D.C. 20555
NRC FIN 80279
NUREG/CR-4620
ORNL/TM-10067
12
The rainfall depth for a specific site is estimated by determining the
rainfall duration and/or appropriate time of concentration. The resulting
rainfall depth in inches, is
PMP rainfall depth = (X PMP) x (PMP) ( 2 .1)
where the percent PMP is obtained from Table 2.1 and the PMP is obtained
from the appropriate PMP design storm presented in Section 2.1.1.
The rainfall intensity, i, in inches per hour can be computed as
60
= rainfall depth (inches) x (2.2)
rainfall duration (minutes)
The rainfall intensity determined from Equation 2.2 is generally a conser-
vative value and represents the peak rainfall intensity of the design
storm.
To compute the rainfall intensity for any rainfall duration, it is
recommended that a rainfall intensity versus rainfall duration curve be
plotted on semilogarithmic paper. Because of the extremely conservative
rainfall intensity values obtained for short durations, it is recommended
that the minimum rainfall duration be 2.5 minutes. Rainfall depths should
be extracted from the appropriate Hydrometeorological Report.
2.2 PMP COMPARISON STORMS
A comparison of estimates of the PMP with greatest observed rainfall
and estimates of the 100-year events for areas both east and west of the
105° meridian was prepared (NWS, 1980). Information from 6500 precipita-
tion reporting stations in the eastern U.S. and about 2100 stations in the
west was used. Including storm durations of 6 to 72 hours, the study indi-
cated that 177 separate storm events have been recorded in which the rain-
fal l was greater than or equal to 50 percent of the PMP for stations east
of the 105° meridian. Only 66 separate storm events were recorded west of
the 105° meridian where rainfalls were greater than or equal to 50 percent
of the PMP.
The National Weather Service also reported the number of storm events
which met or exceeded the 100-year rainfall values and compared them with
the regional PMP values (NWS, 1980). Table 2.2 surmiarizes these rainfall
events for 6 and 24-hour storms occurring over a 10 square mile area. It
is interesting to note that a storm has not been officially recorded west
of the Continental Divide that exceeds 90% of the PMP value. However, it
is evident that a number of storms approach the PMP values, thereby sub-
stantiating that the prescribed PMP values are not extremely conservative.
41
4.1.5.6 Gully Width
The width of the gu11y across the top of the gully at the point of
maximum depth can be estimated frcxn Figure 4.5. Having canputed the maxi-
mum depth, Oniax• and knowing the uniformity coefficient, Cu, the top
width is estimated to be approximately 5.6 feet. However, the gully width
wil 1 widen over time to where the gully side wal 1 stands at an angle less
than the angle of repose of the cover material.
4.2 EMBANKMENT ANO SLOPE STABILIZATION USING RIPRAP
Rock riprap is one of the most economical materials that is co:nmonly
used to provide for cover and slope protection. Factors to consider when
designing rock riprap are: (1) rock durability, density, size, shape,
angularity, and angle of -repose; (2) water velocity, depth, shear stress,
and flow direction near the riprap; and (3) the slope of the embankment or
cover to be protected. Through the proper sizing and placenent of riprap
on any impoundment cover, rill and gully erosion can be minimized to ensure
long term stabilization.
The primary failure mechanism of concern is the renoval of material
fran the impoundment due to shear forces developed by water flowing paral-
1 el and/or adjacent to the cover as described by Nelson et al. (1983). One
purpose of the cover is to expedite the removal of precipitation and tribu-
tary waters away from the cover to minimize seepage and percolation.
However, when surface waters are not properly managed, extreme erosion may
result and endanger the impoundment stability. For example, slopes are
often designed and constructed to develop sheet flow conditions. After
many years of exposure, sheet and rill erosion, and localized settlement,
the hydraulic conditions have significantly altered causing flows to merge
or concentrate into drainage channels. The greater the concentration of
flow into the drainage channels, the greater the erosion potential.
4.2.l Zone Protection
The design requirements for placing riprap rock on a cover vary
depending upon cover location. It is suggested that four areas exist on
the cover in which different failure mechanisms can result frcxn tributary
drainage. The four areas or zones of concern are presented in Figure 4.6
and include:
l. Zone I: This zone is considered the toe-of-the-slope of the
reclaimed impoundment. The riprap protecting the slope toe must
be sized to stabi 1 i ze the slope due to flooding in the major
watersheds and dissipate energy as the flow transitions fro:n the
impoundment slope into the natural terrain. Ione I is considered
a zone of frequent saturation.
2. Zone II: This is the area along the side slope which renains in
the major watershed flood plain (PMF). The rock protection must
resist not only the flow off the cover, but also floods. The
! i t .,,
'
.: '
. i .
• • j"
~: '
-.;_. ·: i_:
: •• ! ~ .
:M t:~.
1
'I Zone
I
Zone
III
42
\
-~~:ti·:_:d
·.C1
Fig. 4.6 •. Zones of a reclaimed impoundment requiring riprap protection.
43
riprap must serve as embankment protection similar to river and
canal banks. Zone II is considered a zone of occasional satura-
tion.
3. Zone III: Riprap should be designed to protect steep slopes and
embankments from potential high overtopping velocities and exces-
sive erosion. Flows in Zone III are derived from tributary
drainage and direct runoff from the reclaimed site. Zone III is
considered a seldom saturated zone.
4. Zone IV: Rock protection for Zone IV is generally designed for
flows from mild slopes. Zone IV will usually be characterized by
sheet flow with low flow velocities. Zone IV is considered a zone
of seldom saturation.
Since the rock protection requirements are significantly different on
various locations on the cover, it should be apparent that each riprap
design procedure available was formulated to address a specific applica-
tion. Since a single riprap design procedure does not necessarily meet all
of the cover protection requirements, recommendations will be made indicat-
ing which zone(s) each riprap design procedure best addresses.
Because the frequency of wetting or saturation varies by zone, the
durability requirements of the riprap may vary by zone. The concept of
durability and oversizing will be addressed in Chapter 6 of this report.
4.2.2 Design Procedures
Presently, several methods are available to assist the designer in
determining the appropriate rock size for protection of impoundment covers,
embankments and unprotected slopes from the impact of drainage waters.
Alternative riprap design methods summarized herein are
,1. Safety Factors Method
2. The Stephenson Method
3. Corps of Engineers Method
4. The U.S. Bureau of Reclamation Method
These riprap design procedures are but examples of the many methods
available.
4.2.2.1 Safety Factors Method
The Safety Factors Method (Richardson et al., 1975) for s1z1ng rock
riprap is quite versatile in that it allows the designer to evaluate rock
stability from flow parallel to the cover and adjacent to the cover. The
Safety Factors Method can be used by assuming a rock size and then
calculating the safety factor (S.F.) or allowing the designer to determine
a S.F. and then computing the corresponding rock size. If the S.F. is
greater than unity, the riprap is considered safe from failure; if the S.F.
is unity, the rock is at the condition of incipient motion; and if S.F. is
less than unity, the riprap will fail.
60
where d50 is the mean rock size in feet. A graphical representation
for determining n is presented in Figures 4.12 and 4.13. However, these
values were developed for uniform flow condition over submerged riprap.
When overtopping flows on steep slopes begin to cascade, n value~ will
increase and may range from 0.07 to 0.09 or higher. {Abt and Ruff, 1985
and COE, 1970).
Table 4.2. Manning Coefficient, n.
Channel Material Manning Coefficient, n
Fine sand, colloidal
Sandy loam, non-colloidal
Silt loam, non-colloidal
Alluvial silts, non-colloidal
Ordinary firm loam
Volcanic ash
Stiff clay, very colloidal
Alluvial silts, colloidal
Shale~ and hardpans
Fine gravel
Graded loam to cobbles, non-colloidal
Graded silts to cobbles, colloidal
Coarse gravel, non-colloidal
Cobbles and shingles
Source: Morris and Wiggert, 1972.
4.8 COVER EROSION RESISTANCE EVALUATION
0.020
0.020
0.020
0.020
0.020
0.020
0.025
0.025
0.025
0.020
0.030
0.030
0.025
0.035
The cover design should be evaluated to determine if the unprotected
slopes(s) can withstand overland or sheet flow with a minimum of erosion.
Based upon the site-specific cover and precipitation parameters, the design
sheet flow velocity should be estimated. A comparison of the design flow
velocity with the cover permissible flow velocity can be performed.
Furthermore, the design velocity can be used to determine the sediment
discharge using the Universal Soil Loss Equation (Chapter 5) and for sizing
stone protection (Section 4.2).
The design velocity will usually be determined from the peak discharge
generated from the Probable Maximum Flood (PMF). The PMF can be estimated
by
(a) Using computer models, i.e., HEC-1 (COE, 1974), that are widely
accepted by the engineering profession.
64
{b) Applying the Rational Method for tributary areas that are less
than approximately one square mile in area.
The Rational fonnul a is conmonly expressed as
Q = CiA (4.42)
where Q is the maximum or design discharge in cfs, C is a runoff coeffi-
cient dependent upon the characteriza'tion of the drainage basin, i is the
rainfall intensity expressed in inches per hour and A is the tributary area
expr·essed in acres. When a unit width approach is taken, the area f\.i is
the slope(s) length times the unit width. Therefore, Equation 4.42 would
be presented as
q = CiJ'lw (4.43)
for a unit width analysis.
4.8.1 Runoff Coefficient
The runoff coefficient, C, is related to the climatic conditions and
type of terrain characteristic of the watershed including soil materials,
permeability and storage potential. Values of the coefficient Care
presented in Table 4.4 (Lindsley et al., 1958), Table 4.5 (Chow, 1964), and
Table 4.6 (ASCE, 1970 and Seelye, 1960).
Table 4.4. Values of Coefficient C.
Type Area Val ue of C
Flat cultivated land, open sandy soil 0.20
Rolling cultivated land, clay-loam soil 0.50
Hill land, forested, clay loam soil 0.50
/Sl:eep, impervious slope 0.95
Source: Lindsley, et al, 1958.
The selection of a coefficient value requires considerable judgment as
it is a tangible aspect of using the rational fonnula. It is recommended
65
that a conservative value of C be applied for PMF estimation since infil-
tration and storage comprise a low percentage of the runoff. Furthermore,
the C values presented were derived for storms of 5-100 year frequencies.
Therefore, less frequent, higher intensity storms will require the use of a
higher C value (Chow, 1964). It is reconmended that a runoff coefficient
of 1.0 be used for PMF applications in very small watersheds since the
effects of localized storage and infiltration will be small.
Table 4.5. Values of C for Use in Rational Formula.
Watershed Cover
Soil Type Cultivated Pasture Woodlands
With above-average infiltration rates; 0.20 0.15 0.10
usually sandy or gravelly
With average infiltration rates; no 0.40 0.35 0.30
clay pans; loams and similar soils
With below-average infiltration rates; 0.50 0.45 0.40
heavy clay soils or soils with a clay
pan near the surface; shallow soils
above impervious rock
Source: Chow, 1964.
4.8.2 Rainfall Intensity
In order to determine the rainfall intensity, i, the time of concen-
tration, t must be estimated. The time of concentration can be , approximated by:
(a) Applying one of the many accepted empirical formulae such as
0.00013
L 0. 77
5o.3ss (4.44)
where L is the length of the basin in feet measured along the
watercourse from the upper end of the watercourse to the drainage
basin outlet and S is the average slope of the basin. Time of
concentration is expressed in hours. This procedure is not
applicable to rock covered slopes. This expression was
!
66
Table 4.6. Values of runoff coefficient C.
Character of Surf ace
Pavement--asphalt or concrete
Gravel, fran clean and loose to
clayey and compact
Roofs
Lawns (irrigated) sandy soil
Fl at, 2 percent
Average, 2 to 7 percent
Steep, 7 percent or more
Lawns (irrigated) heavy soil
Fl at, 2 percent
Average, 2 to 7 percent
Steep, 7 percent
Pasture arrl non-irrigated lawns
Sand
Bare
Light vegetation
Loam
Bare
Light vegetation
Clay
Bare
light vegetation
Composite areas
Urban
Single-family, 4-6 units/acre
Multi-family, >6 units/acre
Rural (mostly non-irrigated lawn area)
<l/2 acre -l acre
1 acre -3 acres
Industrial
Light
Heavy
Business
Downtown
Neighborhood
Parks
Source: ASCE, 1970 and See1ye, 1960.
Runoff Coefficients
Range Recanmended
0.70-0.95 0.90
0.25-0.70 0.50
0.70-0.95 0.90
0.05-0.15 0.10
0.15-0.20 0.17
0.20-0.30 0.25
0.13-0.17 0.15
0.18-0.22 0.20
0.25-0.35 0.30
0.15-0.50 0.30
0.10-0.40 0.25
0.20.:..0.60 0.40
0.10-0.45 0.30
0.30-0.75 0.50
0.20-0.60 0.40
0.25-0.50 0.40
0.50-0.75 0.60
0.20-0.50 0.35
0.15-0.50 0.30
0.50-0.80 0.65
0.60-0.90 0. 75
0.70-0.95 0.85
0.50-0.70 0.60
0.10-0.40 0.20
67
designed for and applicable to small drainage basins (Kirpich,
1940).
(b) Using the Soil Conservation Service (SCS) Triangular Hydrograph
Theory (DOI, 1977)> the time of concentration is
01.g L~~)..tuL, USNRC \I'\ 1'j\
tc H '-\F=~Sl6ft \~v-l.-(4.45) -r~ l>~ ~~~r~~ ~~~ ~~\~
where L is the length (miles) of the longest wa ercourse from the ~{-·
point of interest to the tributary divide, His the difference in (l<\°t-o\
elevation (feet) between the point of interest and the tributary ")
divide. The time of concentration will be expressed in hours.
The SCS procedure is most applicable to drainage basins of at
least 10 square miles.
Once the rainfall duration or time of concentration is detennined, the
rainfall depth can be co:nputed based on the PMP intensity values estimated
in Section 2.1.2.
4.8.3 Tributary Area
The tributary area may be expressed in a unit width fonnat for design
of rock protection on an embankment. Therefore, the area is the length of
the longest expected or measured water course multiplied by the unit width.
This procedure is primarily applicable to Zones I, II, and III and is not
applicable for drainage ditch design. It should be noted that a unit width
approach to drainage and diversion ditch design is not effective. Ditch
design requires an entire basin analysis in \'tlich,a co:nposite inflow hydro-
graph is determined and is routed along the channel. Fran the inflow
hydrograph, water surface profiles (i.e., HEC-2) can be estimated to deter-
mine flow depth and velocities for riprap design (COE, 1982).
4.8.4 Sheet Flow Velocity
The design velocity for sheet flow on an enbankment slope can be esti-
mated by solving the Manning fonnula presented in Equation 4.39. It is
assumed that the hydraulic radius, R, is approximately equal to the flow
depth, y, and that the design discharge is equal to that estimated by the
Rational Method. Therefore, the depth of flow is
y -n
[
Q J 3/5
-1.486 s172 (4.46)
where Q is the discharge, S is the slope, and n is the Manning coefficient.
68
Therefore, the design velocity can be estimated as
Voesign = Q/A (feet/sec) (4.47)
where A is the cross-sectional area of flow.
4.9 FLOW CONCENTRATIONS
Despite the extensive efforts of the impoundment reclamation designer,
reviewer, contractor and inspector, the topographic features of the cover
will alter over time without continual maintenance (Powledge and Dodge,
1985). Cover modifications will result fran differential settlement,
collapsing soils, marginal quality control in cover placement, erosion,
major hydrologic events and monitoring disturbance. Because of these
unpredictable and generally uncontrollable events, tributary drainage areas
evolve that were not originally designed or constructed. The result is
that the peak discharge and volume of runoff exceed design levels and
increase the erosion potential.
Abt and Ruff (1985) conducted a series of flume experiments on a l V: SH
prototype embankment protected by riprap with median rock sizes of 2 inches
to 6 inches in diameter. It was observd that 2-4 inch diameter riprap were
highly susceptible to sheet flows converging along the face of the embank-
ment into channels. The discharge in the channel{s) was canpared to the
total discharge over the embankment by
l
CF=-----(4.48)
l -(QC -Q)
where CF is the concentration factor, Oc is the discharge in the channel
and Q is the total discharge over the embankment. The concentration
factors ranged from 1.1 to 3.2 where flows were less than the failure dis-
charge. These preliminary results indicate that riprap designed for sheet
flow conditions may be subjected to flow channelizations that concentrate 3
times the discharge in a single location.
The peak discharge along a crest or at a design p:::iint is a function of
the amount of precipitation, the tributary drainage area, the slope of the
drainage basin, the basin contouring, the cover mater~al and cover protec-
tion. Any modification in one or more of these parameters can impact the
outlet peak discharge. The cover design must account for these p:::itential
changes in the form of a concentration or safety factor. Therefore, a flow
concentration factor may be incorporated into the design process to
adequately evaluate the soil resistance to erosion, to adequately select
and evaluate alternative protective measures and to size riprap vkien
warranted.
(4.47)
esigner,
cover
jge •
t,
ion,
>e
Je areas
: is
id
a 1 V: SH
'. inches
ap \ere mr ·.
t
l .48)
inel
. dis-
sheet
rate 3
ion of
f the
)tee-
the
ti al
l fl ow
'Ct
69
It is difficult to accurately predict the value of the flow concen-
tration factor since limited information is currently available to substan-
tiate design limits. However, it is reasonable to assume that values
between 2 and 3 are attainable with only a slight evolutionary change in
cover. Unless-it can be shown that design procedures such as overbuilding
can compensate for differential settlement, it is recommended that a
conservative concentration factor be used until additional research can
justify a more reasonable range of values.
To incorporate the flow concentration factor into the stone s1z1ng
procedure of any riprap design method·, multiply the design peak discharge
by the flow concentration factor. All subsequent computations, i.e.,
velocity and depth estimate, stone size determination, etc., will reflect
the influence of the flow concentration.
4.10 PERMISSIBLE VELOCITIES
Evaluation of proposed reclamation alternatives should include an
analysis of the critical erosion potential of the cover material. Erosion
potential can be determined based upon the properties of the reclamation
materials as well as the degree of compaction in which the material is
placed. The permissible velocity approach consists of specifying a
velocity criterion that will not erode the cover or channel and will pre-
vent scour. A comparison of the actual or design flow velocities to the
permissible velocities associated with overland flows, sheetflows or chan-
nel flows determines the erosion potential. When the design flow velocity
meets or exceeds the permissible velocity, cover protection should be
considered.
The permissible velocity values presented were developed from experi-
ments performed primarily in canals and stream beds. Therefore, the fol-
lowing permissible velocities should provide a conservative estimate for
evaluating the erosion resistance of the reclaimed covers over long term
periods. In cases where a range of permissible velocities are presented,
it is recommended that the lower velocity be used for determining erosion
potential •
A series of permissible maximum canal velocities was developed by
Fortier and Scobey (1926) and adapted by Lane (1955). The maximum
permissible velocities presented in Table 4.7 are applicable to colloidal
silts. These velocity values were developed for channels without
sinuosity. Lane recommended a reduction of the velocities in Table 4.7 by
13 percent if the canal/channel is moderately sinuous. The maximum
allowable velocities for sandy-based materials are given in Table 4.8.
Table 4.9 provides limiting velocities for cohesive materials according to
compactness for materials with less than 50 percent sand content. The Soil
Conservation Service maximum permissible velocities (SCS, 1984) for well
maintained grass covers are presented in Table 4.10.
It is important to recognize that limited information is available
pertaining to permissible velocities on covers under sheet flow conditions.
70
Table 4.7. Maximum pennissible velocities in erodible channels.
Channe 1 Materi a 1
Fine sand, colloidal
Sandy loam, non-colloidal
Silty loam, non-colloidal
Alluvial silts, non-colloidal
Fi rm loam
Volcanic ash
Stiff clay, colloidal
Alluvial silts, colloidal
Shales and hardpans
Fine gravel
Graded loam to cobbles, non-colloidal
Graded silts to cobble, colloidal
Coarse gravel, non-colloidal
Cobbles and shingles
Source: Lane 1955.
Water Transporting
Co11oida1 Silts
v (ft/sec}
2.50
2.50
3.00
3.50
3.50
3.50
5.00
5.00
6.00
5.00
5.00
5.50
6.00
5.50
Table 4.8. Maximum allowable velocities in sand-based material.
Material
Very light sand of quicksand character
Very light loose sand
Coarse sand to light sandy soil
Sandy soil
Sandy loam
Average loam, alluvial soil, volcanic ash
Firm loam, clay loam
Stiff clay soil, gravel soil
Coarse gravel, cobbles and shingles
Conglo~erate, cemented gravel, soft slate,
tough hardpan, soft sedimentary rock
Source: Lane, 1955.
Velocity
(ft/sec)
0.75 to 1.00
1.00 to 1.50
1.50 to 2.00
2.00 to 2.50
2.50 to 2.75
2.75 to 3.00
3.00 to 3.75
4.00 to 5.00
5.00 to 6.00
6.00 to 8.00
-~
71
Therefore, the pennissible velocities developed for channels is usually
extended to overland flow situations. When design velocities reach or
exceed those indicated in Tables 4.7 through 4.10, protection is warranted.
Table 4.9. Limiting Velocities in Cohesive Materials.
Compactness of Bed
Fairly Very
Loose Compact Compact C001pact
Principle Cohesive Velocit) Vel ocit) Velocity Velocity
Material (ft/sec (ft/sec (ft/sec) (ft/sec)
Sandy clay 1.48 2.95 4.26 5.90
Heavy clayey soils 1.31 2.79 4.10 5.58
Clays 1.15 2.62 3.94 5.41
Lean clayey soils 1.05 2.30 3.44 4.43
Source: Lane, 1955.
The materials presented in Tables 4.7 through 4.9 can be referenced to
the Unified Soil Classification System as presented by Wagner {1957). An
engineering analysis of the cover material can provide an approximation of
the pennissible velocities that the alternative cover materials may with-
stand without supplemental protection.
4.11 PERMISSIBLE VELOCITY EXAMPLE
A tailings disposal site located in the northwest corner of New Mexico
has prepared a reclamation plan for review. The reclamation plan indicates
that a 10 foot thick cap will be placed atop the tailings at a slope of
2.4% with a compaction of 95% of optimum. The cap will be graded as shown
in Figure 4.14 and shall transition into side slopes of lV:lOH. It is
proposed that the cap will be cooiposed of a sandy clay with a coarse gravel
cover. Along the crest, a 12 inch thick layer of riprap will be placed for
at least 8 feet upslope and downslope of the crest to stabilize the
transition. The riprap will have a median stone size of 6 inches. The
gravel cover will have a median rock size of 1.5 inches. The design
reviewer must verify that the gravel cover will resist the JX)tential
velocities that may result on the cap.
74
In order to assess the stabilization of the cap again~t erosion due to
overland flow, information provided in Sections 4.6 through 4.10 of this
report must be utilized. One alternative means of reviewing the design is
presented in the fol~owing analysis.
4.11.1 Estimation of Peak Runoff
The peak runoff can be estimated using the Rational formula presented
in Equation 4.43. The three components of the Rational formula that
require consideration are: the runoff coefficient, C; the rainfall inten-
sity; i; and the tributary area, A.
The runoff coefficient can be estimated by examining Tables 4.4
through 4.6. Since the cap will be composed of a compacted clay, the
infiltration and localized storage will be low. The peak runoff is a
direct function of the estimated localized PMF. Therefore, a reasonable C
value is 1.0.
The rainfall intensity can be estimated by determining the 1-hr,
l-mi2 local storm PMP value and adjusting the rainfall depth in ac~or­
dance with the percentages presented in Table 2.1. For northwest New
Mexico, the 1-hr, l-mi2 PMP is estimated to be 9.5 inches after the
appropriate elevation and area adjustments are performed.
The time of concentration, tc, should be estimated. Using Equation
4.44, the tc can be estimated where the longest flow path is approxi-
mately 450 feet as
tc 0.00013 ( 450) o. 77
=
(0.024)0.385
(4.49)
and
tc 0.06 hrs == 3.62 minutes (4.50)
The rainfall depth for variable rainfall durations can be estimated
using the values presented in Table 2.1 which are applicable to northwest
New Mexico. Since the time of concentration is 3.6 minutes, the percent of
the 1-hr PMP can be interpolated to be approximately 35 percent. The
rainfall depth is computed using Equation 2.1 to be
Rainfall depth== (0.35) x 9.5 inch= 3.33 inches (4.51)
·.• ·' :.•
;~
75
A conservative estimate of the rainfall intensity is determined by
applying Equation 2.2.
60
= 3.33 inches x -= 55.5 inches/hr (4.52)
3.6
The tributary area, A, can be estimated using a unit width approach
presented in Section 4.8. Since the longest flow path is 450 feet with a
unit width of one foot, the tributary area is 450 square feet. The
tributary area can be converted to acres by di vi ding by 43 ,560 square
feet/acre resulting in an area of 0.0103 acres.
The peak sheet flow unit discharge at the transition can be computed
by using the Rational formula presented in Equation 4.43.
q = (1.0) (55.5) (0.0103) = 0.57 cfs (4.53)
4.11.2 Sheet Flow Velocity
The sheet flow design velocity can be estimated by first determining
the depth of flow. The depth of flow, y, can be calculated using Equation
4.46. However, the Manning surface roughness coefficient, n, must be
determined. From Equation 4.41, the Manning n value can be calculated as
m..:: o-o~°ls-(d.:so)Y.c
n = 0.0395 (0.125)116 = 0.028 (4.54)
The depth of flow is then computed to be
or
y ( 0 • 5 7 ) 0 . 0 28
1.486 (0.024)112
3/5
y = (0.202 ft) (12 in/ft)
0.202 feet
2.42 inches
The design sheet f1ow velocity is calculated using Equation 4.47.
0. 57
v 2.82 feet/sec
(1.0)(0.20)
(4.55)
(4.56)
(4.57)
. ~
76
·~-~!:rt f ~ -·
-~ , 't ~ {:~~­
~~:~:1 ~~-·: ,-'
<!!;~'0:·57· is the unit discharge, 1.0 is the width of flow 1 ';-'-is the depth of flow in feet. It should be noted that the
tion factor was not incorporated into this conputation.
4.11.3 Cover Pennissible Velocity
in feet and 0.20
fl ow concentra-
The penni ssib l cit for th red with ravel has been
detenn1n to be 5.,0-6.0 feet/sec as presented in Table 4.8. Since the
Cies1gn sheet flow velocity was calculated to be 2.9 feet/sec, the cover
should be able to withstand the design flow.
Development of
Riprap Design Criteria by
Riprap Testing in Flumes:
.Phase I
Manuscript Completed: October 1986
Date Published: May 1987
Prepared by
S. R. Abt, M. S. Khattak, J. 0. Nelson, J. F. Ruff,
A. Shaikh, R. J. Wittler, Colorado State University
0. W. Lee, N. E. Hinkle, Oak Ridge National laboratory
Colorado State University
Fort Collins, CO 80523
Under Contract to:
Oak Ridge National laboratory
Oak Ridge, TN 37831
Prepared for
Uranium Recove.rv Field Office
Region IV -Box 25325
U.S. Nuclear Regulatory Commission
Denver, CO 80401
and
Division of Waste Management
Office of Nuclear Material Safety and Safeguards
U.S. Nuclear Regulatory Commission
Washington, DC 20555
NRC FIN A9350
NUREG/CR-4651
ORNL/TM-10100
18
embankments, channel and unprotected slopes from the impact of flowing
waters. Four riprap design procedures which will be referenced are:
1. Safety Factors Method (SF)
2. The Stephenson Method (STEPH)
3. The U.S. Army Corps of Engineers Method (COE)
4. The U.S. Bureau of Reclamation Method (USBR)
A summary of each method will be presented.
3.4.1 Safety Factors Method
The Safety Factors Method (Richardson et al., 1975) for sizing riprap
allows the designer to evaluate rock stability from flow parallel to the
cover and adjacent to the cover. The Safety Factors Method can be used by
assuming a stone size and then calculating the safety factor (SF) or
allowing the designer to determine a SF and then computing the corresponding
stone size. If the SF is greater than unity, the riprap is considered safe
from failure; if the SF is unity, the rock is at the condition of incipient
motion; and if SF is less than unity, the riprap will fail.
The following equations are provided for riprap placed on a side slope
or embankment where the flow has a non-horizontal (downslope) velocity
vector. The safety factor, Sr, is:
SF cos 8 tan¢ (3.5)
r;' tan¢ +sin 8 cos f3
where
'· ·•
19
", " " [-[l_+_s_i_n _~_A._+_f3_)_J J
(3.6)
21 To
lJ = -----
( Gs -1) l' 050 (3.7)
T 0 = l' OS (3.8)
and
-1[ COS>,. J f3 = tan
(2 sine)/{11tanct>) +sin>-. (3.9)
The angle, A., is shown in Figure 3.1 and is the angle between a
horizontal line and the velocity vector component measured in the plane of
the side slope. The angle. e, is the side slope angle shown in Figure 3.1
and f3 is the angle between the vector component of the weight, Ws,
directed down the side slope and the direction of particle movement. The
angle, <t>, is the angle of repose of the riprap, T 0 is the bed shear stress
(Simons and Senturk, 1977), 050 is the representative stone size,
Gs is the specific gravity of the rock, D is the depth of flow, Y is the
specific weight of the liquid, Sis the slope of the channel, and lJ 1 and 1J
are stability numbers. In Figure 3.1, the forces F1 and Fd are the lift
and drag forces, and the moment arms of the various forces are indicated by
the value ei as i = 1 through 4. Figure 3.2 illustrates the angle of
repose for riprap material sizes.
Riprap is often placed along side slopes where the flow direction is
close to horizontal or the angularity of the velocity component with the
r ! 20
Water~
Surface --/ Horizontal Line -;-----, -Ow / p Direct ion of Velocity, vr
I I '
I I ' / le --' _____ §J~~.,,./---,, -/ -----...!::--...-....... ,,,.., ---_...... -----
(a} General View
W sin
Streamline VA
R, Direction of
Particle Movement
( b) View Normal to the Side Slope (c) Section A - A
Fig. 3.1. Riprap stability conditions as described in the Safety Factors
Method.
22
horizontal is small (i.e., 'A O) • For this case, the above equations
reduce to:
~ tan <P (3.10) tan (3
2 sin e
and
[ 2
(SF)2 l cos 0
Sm -(3.11) 17 =
(SF) (S~)
where
tan <t> (3.12) Sm = tan e
The term Sm is the safety factor of the rock particles against rolling
down the slope with no flow. The safety factor, SF, for horizontal flow may
be expressed as:
SF = Sin [S2 i sec2 e + 4) 0•5 -S .11 sec e] (3.13) 2 m m
Riprap may also be placed on the cover or side slope. For a cover
sloping in the downstream direction at an angle, a, with the horizontal, the
equations reduce to:
SF cos a tan <P (3.14)
17 tan <1> sin a
23
Historic use of the Safety Factors Method has indicated that a minimum
SF of 1.5 for non-PMF applications (i.e. 100-year events) provides a side
slope with reliable stability and protection (Simons and Senturk, 1977).
However, a SF of slightly greater than 1.0 is recommended for PMF or maximum
credible flood circumstances. It is recommended that the riprap thickness
be a minimum of 1.5 times the 050. Also, a bedding or filter layer
should underlay the rock riprap. The filter layer should minimally range
from 6 inches to 12 inches in thickness. In cases where the Safety Factors
Method is used to design riprap along embankments or slopes steeper than
4H:1V, it is reco!lll1ended that the toe be firmly stabilized.
3.4.2 Stephenson Method
The Stephenson Method for sizing rockfill to stabilize slopes and
embankments is an empirically derived procedure developed for emerging flows
(Stephenson, 1979). The procedure is applicable to a relatively even layer
of rockfill acting as a resistance to through and surface flow. It is
ideally suited for the design and/or evaluation of embankment gradients and
rockfi~l protection for flows parallel to the embankments, cover or slope.
The sizing of the stable stone or rock requires the designer to
determine the maximum flow rate per unit width (q), the rockfill porosity
(np), the acceleration of gravity (g), the relative density of the rock ~---
(Gs), the angle of the slope measured from the horizontal (e), the angle
of friction (<t>). and the empirical factor (C). -------·
! .
24
The stone or rock size, 050. is expressed by Stephenson as
7/6 1/6
=Le J 2/3 q(tan e) np (3.15) 0 50 1/2 -tan 8 )]513 g [1-n )(G -1) cos 8 (tan~ p s
where the factor C varies from 9__:__?2 for gravel and pebbles to 0.27 for
crushed granite. The stone size calculated in Equation 3.15 is the
representative diameter, 050, at which rock movement is expect~d J~-r:: ,.-, ....
unit discharge, q. The representative median stone diameter (Dsor·_is· 1•' .
! '·· . ~-
then multiplied by 01 i vi ers' constant, K, to insure stability. Oliviers' . ··.· "
constants are 1.2 for gravel and 1.8 for crushed rock.
should be well graded and at least two times the Dso in thickrie~~-A
bedding layer or filter should be placed under the rockfill.
'·· The Stephenson Method does not account for uplift of -the stones due to
;. -·~ ·,
emerging flow. This procedure was developed for flow over and through
rockfill on steep slopes. Therefore, it is recof'.111ended that the Stephenson
Method be app 1 i ed as an embankment stabilization for overN ow or sheetfl ow
conditions. Alternative riprap rockfill design procedures should be
considered for toe and stream bank stabilization.
3.4.3 U.S. Army Corps of Engineers Method
The U.S. Army Corps of Engineers has developed perhaps the most
comprehensive methods and procedures for sizing riprap revetment. Their
criteria are based on extensive field experience and practice (COE, 1970 and
/
SECOND EDITION
ORIGIN OF
SEDIMENTARY ROCKS
HARVEY B LA TI
University of Oklahoma
GERARD MIDDLETON
McMaster University
RAYMOND MURRAY
University of Montana
Prentice-Hall, Inc, Englewood Cliffs, New Jersey 07632
•· • •• • .. ~ ~. ;:,., • ~ • • , • I
0...011, Q<Oon'S ..... fl ~fQ'O-~
0 "' 20
., ...
O<SSO!..VEO ANO R(f'RECJPtTATEO
O(TRITAL OUARTZ
fig. 12-1 POf0$ltv. bur~ depd\_ acw:f :
•bund..ncc of quartz ~ '-
qu«tt Uftdstones; Iron\ the -0ogg.er bet.""
(Juru:sfcJ. Wea; G~. fOf ~ :
•• • cfc.pth ol 1000"' u.. poroc.ityis 31~;
quM\z: ~ fOt'l'ft 1% of it.. toQ.. and...,_,.,. and~"' .... .......,.
q....ru. ~ h.v.e ~hs... (Fro.
H.os ~. 1967. Proc. 7lh WOli:t.
Prt Cong_ M•xico CJrr. 2. 354. OMd ·
by ~ o( tn. ~ Sd.entif.: : Pub.Co.)
by «lllrding pressure solution and 1he fonna1ion of quam o>•crgmv'1lis. Fluid llow • 1hroug~ sa~lones <na_Y also enhance porosi1y by dissolving earlier-formed ttmcals : or dctntal mmeral ~ns.
12.4 PERMEABILITY
. Pennca.bili1y is a ~sure of 1he case wi1h which a fluid ftows through a rod'..
ll 1s ~fined ~y an cmponcal relationship first recognized by the French hydrologist ~
Henn Darcy m 1856 and may be wriucn
wbcfe V = apparent velocity (an/s)
Q = discharge (cm'/s}
A = cross-sectional area {an~)
k =.permeability (dareies =cm' X 10"')
JL = fluid viscoiity (ccntipoises, gm/cm s X 10-')
I = distance of flow (cm}
P = pressure ( dyoes/ cm'}; this tenn consists d. ·
both a fluid pressure tenn and a gravitation.ti
accc1cratioo term.
Pcnncabi1itlcs to water or more than 500 darclcs have been measured in modern
river sands: in ancient rocls pcnneabilitics to air range from a high of several
darcies in coarser sandstones to a measured low or w-· · darcy in a shale. The
median permeability of petroleum l"escrvoirs is on the order or 0.1 darcy (100 md).
Permeability is normally determined in the laboratory by sealing the side
of the cylindriC31 rock core. removing any oil in the core with a solvent. and forcing
air longitudinally through the core. Thus penne.abili1tcs ordinarily r-cponed in core
analysis refer to the pcrmc.abilily to dry air at atmospheric pressure. The per-
meability to freshwater. brine., or pctrokum m:ay be much less, depending on the
mineral composition of the rock.. parttcularly the amount and type of clay minerals
it contains (sec below). Unfortunately. the: accuracy of core analysis for determining
pcnnea.bility is somewhat illusory. When a core is removed from the subsurface.
.all confining forces arc removed and the rock matrix. expands in alt directions.
partially changing the pore radii and tluid flow paths inside the core. Increases in
permeability of more than 100/. ha"" been doeumenled (Fatt and Davis, 1952) .
Presumably the pcrcenlllge increase depends largely on the depth at which the core
~ taken and on the mineral composition of the core. particularly its content of
clay and mica.
Subsurface measurements of permeability can be made by using scmicmpirical
clo:tric logging techniques, but ermrs of 100/. are possibk. A better method in use
in petroliferous rocl:s is to detennine the output of a well under a l:nowo pressure
dn.wdown or to interpret pressure buildup dalll during a drill-stem tcsL The
drill-stem test has the advanlllge thal it represents the effceti\'C permeability of a
luge volume of rock under in situ condi.tions.
Depositional penneability is greatest in a direction either parallel to the bed-
ding or at a small angle to it because of grain oricnllltions. mieaecous folia1ions
produced during deposition of the sedimeni. and vertical changes in grain size
within the rod: uniL Johnson and Hughes (1948} examined 33 Dewnian 6il sands
in New Y orl: and Pennsylvania and found variations in permeability averaging
JOY. in the plane of the bedding, with diffcrcnecs being less pronounced in sands of
highc< penneabilities. Griffiths (1949) observed that sand grains arc normally
imbricatcd at a low angle to the bedding and, therefore. planes parallel to the
bedding arc projections of sections through the individual grains on a plane that
lies at varying angles to varying imbrications. Small variations in grain shape would
result in large differences on the projection plane. He found greatest pcnneabilities
in th= cores a1 a low angle 10 the bedding and attributed the resull to the cxistcna:
of grain imbrication in the sandstones. Mast and Potter (1963) studied pcnncab.ili-
tics in the bedding plane of 13 Carboniferous sandstones and concluded. that
variatioos in penncability as a result of fabric "arc extremely small." Oearly it is
dillicult to generalize about directional permeability beyond the statement that it
is least in a direction approximately normal to bedding.
In some units. however. jointing oc miaofaulting can increase permeability
perpendicular to bedding by orders of magnitude (Nelson and Handin, 1977}.
OUARTZ COt-.ITENT ~
0 "" I()() •o~~~~~~~--~~~~~~~~~~~~~~
o~~~~~~~~~~~~~~~~~~~~~~
\lo'ccrVdosttc ...., ,.,...,..
(lirst-c)'dt ~~cf:)
F"1g. 124 ~among potOSity • .....,..._.. composiiion. ~ envi·
~1 o( dcpoc:ition of JUC'MSic; ~ in the North S.. ...... (From
fL C. $.thy. 1978. Jow. GHI. Soc_ 135. 126. Used by ~ of the
~Sod«'(~
in the sand and undercompaction of the mud (Sec. S.12). The effect of day miner-
alogy on «>mpaction of muds can be traced primarily to the pr=ncc of uncctitcs
or interlaycrcd smcctite-illite days. Smcctitic days C<>ntain more watcr than initic
or b.olinitic days and resist «>mpaction of the mud.
Burn (1969) has suggested that the «>mpaction of clays proceeds in three main
stages_ In the first. pott-watcr and water interlaycrs beyond two arc rcmO\'Cd by the
actioo of overburden pressure. At the time of deposition muds may have water
contents on the order of 70 lo 90/.. After a few thousand feet of burial the mud
retains only about 30/. watcr by volume, of which 20 to 2S/. is interlayer water
and S to IO/. is residual pore water. In the SCC<>nd stage. pressure is relatively
ineffective as a dehydrating agent. Dehydration proceeds by heating, which ccmovcs
anothcc 10 to IS/. of the water. Tbc second stage begins at temperatures close to
80"C and may be accompanied by diagenctic changes in clay mineralogy. Sina:
this is also the tcmpcrat!'fC at which organic matter matures to petroleum (Sec. 9-2),
is possible that cxplusion of water during the third stage of clay rccrystallizatioo
also the cause of the •primary• migratioo of petroleum from source to reservoir
rods. The third stage of dehydration is also controlled by temperature but appar-
ently is also very slow, requiring tens to hundreds of years to reach completion.
F"tog. 12~7 V.O.tion of dt.e butt. dcnsCtv
of ~ with drqJth in sew<M secfi· ~ b..sans_ (Hom H. H. Rteb. Ill.
~ G. V. CbiCinQw. 1974. Co~tion
-~~El:KvietPvb.
Co.. p.. 3-t. Used by ~ of the
~ Sc*\Uf.c Pvb. Co.)
lO
O(f<SITY qtcm'
fotalayu water is removed completely, leaving only 1 few percent of pore water
in the mudrod:.
Authigenesis
Authigenic: minerals in sandstones arc dominantly cak.itc and quartz cements
but may also be clay minerals (Chap. 9). Authigcncsis in both sands and muds is
C..vorcd by increasing compaction, temperature, and salinity, all of which accom-
pany increased depth of burial. The relationship between burial depth and the
formation of secondary crowths on dctrital quartz crains is illustrated for $Orne
Mesozoic sandstones by Fik:htbauer (1967) (Fig. 12-S). In some rod:s, however,
authigcncsis may prcsavc rather then destroy porosity. Lumsden ct al. (1971)
found that authigcnic chlorite coatings on dctrital quartz grains in the $piro and
Foster Sands (Pennsylvanian, Oklahoma) preserve the bulk of depositional porosity
00
c .~ .~ i i -~ ... ~ & E ~ -u .:: i f::: " 3£
10
?; . ;:.
<> "' -7 ::;
,_"' z ~"'
!;'. <O
tO
...
/---~<;<_-;,--;.-,..<.
..
·~ u s ;'! z • 8
~~ 0: w 2 ., )
3000 oL-~~~soo-'--.~~~-KXl0..__,~~~-0500'--~~~,-ooo......,_,,.~~,-:soo'--~~~-'
DEPTH lml
--Tonq<n!G ·----s..t..<<d -·-·-Lon9 --Nvmbef ot contocts
----~-
Rig. 12-e ~ ~ cS.pctt. and tn>e of orMn-to-or.tn contaa in
thln-..ol..,..olM--*-low,o.nino.(._.J. M. Tq4o<.
1950. Am«". Aaoc.. ht<. Gffl 6flllt_ >4. 715. Used by~ of N
..._..,_ 1o.aoc. r.-... Gooloo'su.l
may have resulted simply from citbcr an inaasc in pcrocntagc of elongate rod::
fragments with depth or an inaasc in clay content of the sandstones.
The pi:cscncc of dctrital clay io a sandstone has the same effect as the presence
of ductile fragments but inaascs the rate of compaction. Mud has a >ery low
bearing strength and noticeable compaction of clayey sandstones can occur at
depths of only a few meters.
Increased compaction causes a dccrcasc in primary porosity, a feature
observed in scvcnJ field studies. Data relating porosity to burial depth have been
collcctcd from large numbers of. subsurface cores in different sedimentary basins
(Fig. 12-S), and it was found that porosity can dccrcasc either linearly or nonlinearly
with depth and at greatly differing rates. Pctrographk: studies arc nccdcd to deter-
mine the causes of!hcsc diffcrcnccs. The intcm:lationsbips among porosity, tcstural
maturity, and miocralogic composition arc well illustrated by Selley (1978} in a
study of !he occurrcocc of oil in Jurassic sandstones in the North Sea area (Fig.
12~. Volcaniclastic sands arc easily altered chemically during diagcncsis to.pro-
duce fine-grained matrix. Nearly pure quartz sandstones suffer least from diagcoctic
effects. Arkoses occupy an intcnncdia.tc position with respect to diagenctic effects...
With respect to texture. the situation in the Jurassic rocb is equally dear. with
shallow environments being most texturally mature. distal turbidilc:S the least.
•000
2000
I }000 -
~ ~
•000
20 Z.• 2-8 32. fZ •O
AV(RAG( POROSITY (Po«:..,cl
F°tQ 12·5 rocosicy vs..~ (•) South ~ T«(ia(y sands: 17,367 ~ (MomG.l.~.-aMC.LMta....1965.~fM-:dsta~
lor-..ch.1000 ft.inc..-val); (b) G...t.V.-,.Y~a.tWIT~sands:165 ~ (FcomO.L~.endJ.H.Spom.. 1978.AlfMl.As:s:oc.hc..Gco/.
a""-c.z. a1•: (cl cc-Caucasus. u.s.s.R.: tl umpla.. (From a. L ftos:hly-"°"· 1960. wans. by~ TKh.. S«v-~ H.J_ 1965. p. 3.}
The compaction of muds is considerably more compkx than that or sandstones,
as Meade (1%6) has described. In the early stages. co'."~ction may~ _strongly
rat factor> in addition to depth of burial: grain stZC. rate of dcposttJon. day o~ SCYC lo content of organic matter. and gcocbcmical factor> (0...ptcr l_ll· ~1~ r;J: these pan.meters cause wide variations in the amount of compa.ruon
anatoons m . d -•h (Fi 12 7) Coarser grain size suffered by different muds at the same bunal e.,...-1g. -• • •
1 ·th increased quartz/cb.y ratio and hence reduced compaction. H'.&'1 corrc ates W1 • f ch .. seals ... above sand umts., rates of deposition can result in the focmauon o Y.
which destroy vertical permeability and cause the fonnataon of excess pore pressure .,,
o.01 oo----;2;'oo;-----;40~---<ot:;---~oo::----,-,100L __ _J
PERCENT ( to1o1 por~ spoce e-ntc-ricdl
Ponxity and P~y of Oflfitat Rocts •17
to 0.01 µm or less at a dcplh of 3000 m. These values arc an order or magnitude
smalkr than thos< typical of sandstones (se<: Fig. 12-J).
The quantita.tivc significance of the saning of s.and grains on porosity of a
un<lston< was studied experimentally by Beard and Wcyl (197)) for gaussian
distributions. PorOSity was essentially independent of grain size but dccreued
seq~nti.ally as sorting dcacascd from •C2 . .C /. porosity in extremely well-sorted
sands to 27.9/. in very poorly sorted s.ands with no clay matrix. This result seems
quite reasonable bccausco smalkr grains will lodge between the larger on<s. Pryor
(1973) found no significant change in the porosity of river, beach, and dune sands
with change in standard deviation from O."J4> to I.~. but his core sampks, unlike
thos< in the Ikard and Weyl study, were not homogeneous. Pryor's cores consisted
of many thin, individually wcll~cd laminae so that although porosity would be
cxecllcnt, the S<dimeot sorting dctermincd in the laboratory might be good or poor
for the core as a uniL
The porosity of a san<lstone depends on postdcpositional factors as well as
thos< present at the time and site of deposition. A< noted, the most important
·factors during deposition are clay content and the sorting of the sand fraction of
the S<dimcot. Of ksS<r importance are initial grain packing, sand mineralogy,
mean grain size (assuming ·constant sorting), and grain angularity. Important
postdcpositional or diagcnctic factors are degree of compaction and the formation
of authigcnic miocrals.
Compaction
Upon burial, sands compact much kss than mudrods. Thc lesser compaction
of sands results from two factors. First, the avenge san<lstonc is compoS<d latgcly
of quartz grains, and these grains are undcformabk under most S<dimcotary
conditions. Secondly, the fincr particles that pmlominatc in mudrods arc
deposited with initially higher w.atcr contents and this w.atcr is quicl:ly expelled.
Many investigators have compacted quartz .. nds in the laboratory with the result
that the thickness of the aggregate has dca-cascd only 10 to ISX due to rcarnnge-
mcnt of grains and chipping of grain corners.
The amount of compaction increases significantly with the proportion of
ductile rod: fragments in the dctrital fraction of the sand. Such particles as shale,
slate, pbyilitc, and schist deform easily at shallow depth, decreasing porosity («<
below) and thinning the stratigraphic section. This dccrcasc in porosity is notiocablc
in well logs and was first studied in thin sections of subsurface cores by Taylor
(19SO). She found that the proportions of the four ditrcr=t typcs of intugranular
contacts changed with depth of burial (Fig. 12~). Tangential contacts dcacascd
rapidly in abundance with depth, whereas the other three types. showed marted
inaa.cs. Grains were being pushed close together as burial depth ~
Unfortunately, Taylor did not keep a close chcd: on changes in mineral composi-
tion with depth; so we cannot be certain how much of the increased closeness of
grains was due to plastic deformation of elongate ductik fragments and how much
Lance_ Torfuosiry in a undstonc is usually bclwecn 2 and J; in JOOS(: sediment it is
1pproximatcly one-half as large_ The greater the cor1uosi1y. the slower the fiow of
luid through the pore system.
The physical principle on which the mercury injection method is hued is
that liquids forming contact angles on solid surfao=s of more than 90• (i.e_. non-
wetting fluids) a.nnot pc.nctn.tc into small pores unlcs.s the foj«:tion pressure
exc.«ds lhc capillary pressure. The higher the injection pressure. the smaller the
pores that can be penetrated by the liquid. In circular pores with radius r the surface
tension o-acts a.long the p::rimctcr of the cirde with the force. -2.xro. 1bc force
counter.acting lhc intrusion of the liquid par.tlkJ to the uis of the pore is -2.xra
cos l. where l is the angle of contact. The force a.used by the injection pressure
pis '1l.r2p. For equilibrium. we obtain
-2'-Ta c:os l = -.r1p
2acos l or r=----p
lbc surface: tension of mercury is ~84.2 dylldfcm at is•c, and the angk of contact
of mercury on silicate mincru surfaces has been dctennlncd cxperimcaUlly to
approximate 141.3•. Using these >alucs,
7.6 r=-p
whca pccssure is measured ia bars and pocc: radii ia micrometers (Fig. 12-2).
Using this relationship, mercury injection of a core yields the volume pcrcc:otage
of pore throats of any given size ia the rod: sample (Fig. 12-3).
lbc porosity of mudrod:s varies OYCC essentially the same range as ia sand-
stones, from zero to about~ Y.. but the dclirutioo of pocosity in a mud rod: is aot
as clcar-<:Ut as ia the coarser-grained rod:s. Indeed, the ddinition and mcasurcmcnt
of porosity in mudroclcs present problems aot encouata-cd ia sandstones. la a
sandstone composed primarily of quartz and similar minerals. the boundary
between pore space aad grain is rcasorut.bly wcU dclincd. For cxampk, if the pore
space is 6lkd with 'Wlller, then this free or movable water rcpccscnts the porosity.
lbc pcoportion of adsorbed or bound water is usually ncgligibk hcausc the
specific surface: of such minerals as quartz is only I to 2 m'/g of sediment. (Compare
with clay minerals below.) In subsurface: studies, logging mahods that measure
total hydrogen conccutratioa. such_ as ncutrOn logging, clfcctivcly measure the
porosity. But mudrod:s present a more complex pcoblcm. Many of the clay
minerals contain water as part of their structure. and this water certainly should
be considered part of ·the solid rather than part of the pore 1paoc. In addition,
u~tcr adsorbed on the surface: of the clay llalcs normally is not f= to move, and
..... tee may fonn a large pcrcctttage of tbc total water between day Ila«. ia
1udrocl:. This situation occurs hcausc the specific surf..:c of day mincrus
os very large, on the order of tens of square meters per gram. Within the spa<:<:
between lhc grains and their adsorbed wacc:r. however. there exists free water
"E ~ e ;
~
'S 0 "' a: . -
w 3 0: 0 ._
0.1 • ~ .
fig.12-2 Ret.~~~~of~it'C.O•U>f'eat>d
the nd'Olof s:iote '&hroau ~ .... ~
. . vcd by compaction. Thus when we spcal capo.bk or moving or being <Uily n:mo r the total volume of the
of mudrod: porosity, we usually mean the pc"';n~r;c .:'..i1y measured by mcchan-
rock that contains free or easily movablc_watcr. t " us f ftuid removed or the _ the rod: and rncasunng the amount o
jcaJ{y compacting . ""--·methods arc at best, lilt approximation of
"""""lage of volume rcduct>O<L • ~ ' f the r--of the <v>«ibility of altering the water coatcat o the uuc pore volume because .---• nal is
clay 1!1lcs or tbc amount of_ adsorbed ,..._tee ~u~ng ~~ ~oacs and mud-
Th: cri~I d~':~...:aof~ porcschara~~=larly ia fissile mudtod:s (shales). rods arc the Sll<S ""~ .....,,_.. ""° " t<d" lid the da "ncral llalcs that form 60Y. oftbc mineral grains arc oncn m pa~
y m1 ccs arc domi~tly tabular. FurthCTmOfC. bcausc !lat_
and hence pore spa d::cd sizes arc much smaller. Heling (1970) studied ~be
cm be very closely pa ' pore . be that wcrt buried to depths up to
fabric of Tertiary shales from the Rhinctn n f 0 04 µm at a depth of 100 m
}400 m. Pore radii dccreaSCd from an avcna.gc o .
ove-i:c>nvex contact
CTI Mo1ri1
~ Cement
Toto! nvrnber of oroins: ~tered • K>
Total ~ of eontocts enc.ountend • 4'
Poctdno proximity • 4'0 %.
F\n""i denSity -0 .8
F"'Q. 12·1 Ocf\Ntion of ~ ~ types •nd ~ ptOximity. (Aft•
J.M. Taylor. 1950.~. Jln.oc:. ht. G«>i. 8vtt .. :M.p. 711. 712. ~ J. S.
l:ahn.. 1956 • .Jo,u,.Woi .. K p.393).
grain volume; and c.ffcctiw: porosity. lhe ratio of interconnected void volume to
Iota( rod: volume. In dc1rii.al silica1e rods, effective porosily is usually only slightly
less than tolal porosity.
Methods of Measurement
Cm-cs of rods used for porosity determina1ion arc normally cylinders one
inch long and one ind> in diameter. The porosity can be easily determined by gas
expansion. using Boyle's .b.w. Alternatively. the grain density can be assumed
(2.65) and the porosity dctcnnined by weighing a sample saturated with a fluid
of known density. These experimental methods arc suitably a=iratc and arc the
standards for calibration of all other porosity-<letcrmining methods. such as point
-aunts in rod: thin sections or subsurfaa: logging techniques. An important point
keep in mind, however, is that the .porosity of IJ cm I Of rock may not be rcp<C-
.attative of a rod: unit millions of times b.rgcr in volume, particub.rly because
field o~tions ~ that porosities can vary greatly over small distana:s with
such factors as clay mineral or rock fragment content.
~12
The use of subsurface: logging lechoiqucs (sonic. dcnsily. neutron) can somc-
rimcs produce porosity values within I/. o( the value obtained on the same rocl
in a core s.amplc. The advanlagc-1 o( logging methods over core analysis for porosity
dctcrminJ.tion lie in the much larger volume of rock. '""sampled.-perhaps 100 times
larger than the laboratory core, and in the fact that the measurement is made
in situ, before overburden pressure is removed. In addition. there is the matlcr of
cost. Ekctric logs arc made or all wells. but cores arc taken in relatively frw.
tn most sandstones the bulk. or pore space has diameters less than the JO µm
thid:ness of a standard thin scction and so is difficult or impossibk to detect
during examination or the slide unless special techniques arc used. The usual
technique is to vacuum-impregnate the rock slice with a colored epoxy before
thin sectioning s.o that cvc:n extremely narrow pores thal intersect the plane of the
thin section become visible in uncrossed nicols. This technique. now standard in
industry laboratories, also makes it possible to distinguish between pores produa:d
by diagcnctic dissolution or detrital grains and pscudoporcs produced by grain
plucking during grinding or the thin section.
Pore Sizes .. Geometry .. and Measurement
Poca arc irregularly shaped cavities in a rock; therefore any definition of their
.. size"' is an approximation based on the musurcmcnt technique used to deter-
mine it. In some case:s. it is possible to vacuum-impregnate a porous rod: with
either a molten plastic or metal and then dissolve the rocl:. by using suitable reagents
to produa: a Mncgative image" of the rock-that is, its thrcc-<limcnsional pore
network (Swa~. 1979). This technique, although useful for some research pur-
poses, is impractical as a standard mc1hod.
The distribution of pore sizes in a rock sample is determined generally by
injection or mercury into the rock. The sizes of pores determined in this way arc
actually the sizes of the pore Mthroats~ or narrow connections between large pores.
It is the sizes of the throats that control the flow of ftuid through rocl:.s, whether
the 6ow is of mercury during meuurcmcnl of porosity or is water. petroleum.
or natunl gas in the subsurf .. cc_ One dcticicn<:y of the mercury injection technique
is 1hat if a b.rgc pore, such as a vug. is enterc<I by fluid through a narrow throat.
the b.rgc vug will be included within the volume or pore space represented by the
throat size. A second deficiency is that nol all pores can be invaded by the mercury
because they may be shielded by other smaller pores whose displaa:rncnt pressure
is not acceded.
The individual pore may be tubular lil:.e a capillary tube; or it may be nodular
and feather out into the bounding constrictions between nodules; or it may be
a thin. intcrcrystallinc tabub.r opening that is SO to 100 times as wide as it is thicl:.-
Thc wall of the pore may be clean quartz, feldspar. or calcite; or it may be coated
with clay mineral particles, platcy accessory minerals, or rocl:. fragments. The
crool:.edncss of the pore pattern, called the 1or1uosi1y. is the ratio between the dis-
tana: between two points by way or the connccted pores and the S1raight-linc dis-
I:
I
'
CHAPTER 12
POROSITY AND PERMEABILITY
OF DETRiTAL ROCKS
12.1 INTRODUCTION
The porosity and pe~abilic~ of sandstones and mudrod:s have been gcncrv
ally neglected by acadermc geologists. Most of our knowledge in this area comes
from the petroleum industry as part of its effort to locate reserves of oil and gas
It IS strange ~t. few geolo~ists outside of industry h.;.vc investigated the porosit~
-;d pcrmc:abd1tics of ~ctntal rods, for these variables control most diagenctic
P occsses. m roclcs. Without adequate pcnncability to water there can be liulc oc:~tatwn. o~ u.nd,toncs.. diagcnctk alteration of heavy minerals~ conversion of
smcct1tc to llhte, or the myriad of other processes that affect rock after burial
Pore space and permeability arc basic aspects of rock fabric and should be studied
as a normal part of a pctrologic investigation.
12.2 FABRIC
1lK'. term fabric is rcSt'.:rvcd for .. the manner of mutual arrangement in space
of the ':'.'mponcnts of a rock body and of the boundaries betWttn these com-
ponents (lntcrnattonal Tectonics Dictionary). It thus indudcs both the packing
•10
•11
and orlcntation of grains. Grain pacl:inc strongly affects both porosity and per-
meability and grain orientation affects the permeability (Sec. 12.4).
The kast-studicd aspect of fabric is packing •.. the spacing or density pattern
of miner.al grains in a rock-(AGI Glossary). The meaning of packing and its
distinction from other aspects of fabric. such as orientation. is most clearly seen
for the case of a sediment composed of pcrf«X sphcn:s uniform in size. Even in
this highly idealized ~sc it has been shown that there arc six different systematic
ways of arranging the spheres so that each sphere is in contact with four or more
adjacent spheres and there arc no vacant positions. The arrangements vary from
the "loosest" cubic packing with a porosity of 47.6/. to the '"tightest" rhombohcd·
ral packing with a porosity of 26.0/.. The six regular packings do not exhaust the
number or ways that spheres may. in fact. be: pad::cd bcausc in nature an infinite
number of combinations of the six and or .. n.ndom-packings may also be devc.1-
opcd.
Kahn (1956) devised two numerical measures for use in thin section studies.
I. The packirtg density is the ratio of the sum of the l<:nglhs of grain intercepts
to the total kngt.h _of the traverse across the thin section. It is a measure
of the: porosity of a cement-and matrix.free sand or of the ... matrix<cmcnt-
frcc porosity" of a sandstone that has some matrix and cement.
2. The packing proximity is th<: ratio of the number of gain-to-grain cont.acts
(encountered in a traverse across the thin section) to the total number of
contacts of all kinds encountered in the same traverse (Fig. 12-1). If the
grains have only small areas of contact with each other, most of the contacts
observed in a thin section will be contacts between a grain and matrix or
cement; so the packing proximity wi.11 be small. In a rock in which there
has been compaction without the introduction of much cc:ment. most of
the grain contacts observed will be grain-to-grain contacts and the packiiig
proximity will be large.
The type of contact bctwcc:n grains c:.an also be studied in thin $Cd.ion. In the
ideal case of packed spheres. the only observed contacts bctwa:n grains would be
tangential ones. But in the case of nonsphericat grains or where compaction has
taken place, three other types of contacts can be observed (Taylor, 1950). The four
possible types of contacts arc (a) tangential (b) long-: hat is, a contact that appears
as a straight line in the plane of section. (c) concavoconvex, and (d) sutured. The
frequency of coneavoconvcx and sutured contaru relative to that of other types
of contacts has been used as a measure of the intensity of compaction of sands.
12.J. POROSllY
Several terms arc widely used lo indicate the amount of pore space in a rock.
The most common arc porosity. the ratio of void volume to total rock volume
(multipllc:d by 100 to form .a pcroentagc::); void ntio. the ratio of pore volume to
-----.-
-. :.
APPENDIXG
Slope Stability
..:=...=====~ =..= -= i i a=-:::-. Environmental
TIT AN Environmental
By ..KG:_ Date .1fJJi_ Subject EFN White Mesa Mill Tailings Cover
Chkd ByJ:ttL Date cijq(o Stability Analysis of Side Slopes of the Cover
PURPOSE:
Stability Analysis of the Side Slopes of the Cover
Page_l_of_2_
Proj No 6111-001
The purpose of this calculation brief is to evaluate stability of the side slopes of the cover for the
uranium tailings impoundments. The sides of the covers are sloped at 5H: 1 V. From the old
drawings as published by UMETCO (section B-B), the side slope for Cell 4 is the tallest. Also,
along the southern section of Cell 4, the ground elevation drops rapidly. Hence the side slopes of
the cover located along the southern side of Cell 4 are assumed to be critical and considered for
stability analysis.
METHODOLOGY:
Static and pseudostatic slope stability analyses have been performed for the slope geometry as
shown in Figure 1. The limit equilibrium slope stability code GSLOPE, developed by MITRE
Software Corporation has been used for these analyes. The Bishop's method of slices has been
applied.
Geometry and Material Properties
Along the southern end of Cell 4, the topography drops at a rate of approximately 5.5% (Figure 2).
The material properties as provided by Dames and Moore, 1978, have been used for these analyses.
The material properties have been listed in Table 1, below.
Material Type of Unit weight, y Cohesion, c Angle of
No. Material friction,~
(pct) (psf) (degrees)
1 Earthfill 123 0 30
2 Tailings 62.4 0 0
3 ~ Dike 123 0 30
4 Foundation 120 0 28
5 Bedrock 130 10,000 45
Table 1: Material Properties
The surface of the bedrock has been determined from the bore-logs as supplied by Chen and
Associates, 1978. But as this bedrock surface almost coincides with that of the foundation,
assuming the bedrock layer to be about 10 ft. below the lowest point of the foundation surface, will
D: \PROJECTS\6111-001 \STABLITY .DOC
TIT AN Environmental
By _KG_ Date ..1/!JfL Subject EFN White Mesa Mill Tailings Cover
Chkd ByJitL_ Date '1jq0 Stability Analysis of Side Slopes of the Cover
Page_2~of~2-
Proj No 6111-001
give conservative results. Thus, for the stability analysis, the surface of competent bedrock has been
assumed to be at an elevation of +5540 ft. above mean sea level (MSL).
Factor of Safety and Horizontal Acceleration required for analysis:
A factor of safety of 1.5 and 1.0 are respectively acceptable for static and pseudostatic analyses.
Pseudostatic slope stability analysis has been performed for a maximum seismic coefficient of 0.1 g.
RESULTS:
Results of the stability analyses have been presented in this calculation document.
Results for Static case: For static analysis, the maximum Factor of Safety calculated is 2.91 (> 1.5).
Results for Pseudostatic case: For pseudostatic analysis, the maximum Factor of Safety calculated
is 1.903 (>1.0) for a ground acceleration of O.lg.
Hence the side slopes are stable.
REFERENCE:
a) Chen and Associates, Inc., 1978. Soil Property Study, Earth Lined Tailings Retention Cells,
White Mesa Uranium Project, Blanding, Utah.
b) Dames and Moore, 1978. Site Selection and Design Study -Tailing Retention and Mill
Facilities, White Mesa Uranium Project, January 17, 1978.
c) "GSLOPE Limit Equilibrium Slope Stability Analysis", Mitre Software Corporation,
Alberta, Canada
O:\PROJECTS\6111-001 \STABLITY .DOC
TIT AN Environmental
By KG Date 7/96 Subject _E_FN~Wh~it~e_M~e~s~a_M_il~l~T_ai~lin=g-=s_C~o~v_er ___ _
Chkd ByJ>.).fi_ Date 1~(, Stability Analysis of Side Slopes of the Cover
Page __ of __
Proj No 6104-001
RES UL TS OF RUN BY "GSLOPE" ANALYSIS
Material
Earthfill
Tailings
Dike
Foundation
Bedrock
5600
0
I
100
Un it Wt
pcf
123
62.4
123
120
130
c
psf
0
0
0
0
10000
I
200
Phi
deg
30
0
30
28
45
Piezo Ru Titan Environmental -Bozeman MT
Surf. 5111.001
0 0 EFN White Mesa Slope Stability 0 0
0 0 7/1996
0 0 Static Analysis
0 0
WHTMESA 1 . GSL
+
F = 2.91
~ s;:--.....;::::::...._ _________ -5600
300 400
I
500
I
500
I
700
I
800
I
900
--
DATA FILE NAME ..... C:\STABLITY\GSLOPE\WHTMESAl.GSL
,T-'> No.
le
Date
Label A
Label B
Max Slice Width
Set Neg. Normals to zero
No. of Materials
Seismic Acceleration
External Forces
Piezometric Surfaces
Unit Wt. of Pore Fluid
10
y
5
0
0
6111.001
EFN White Mesa Slope Stability
7 /1996
Static Analysis
0
62.4
Material Unit Wt Cohesion Friction Piezo Ru
Angle Surface Value
# 1 -Earthfill 123 0 30 0 0
# 2 -Tailings 62.4 0 0 0 0
# 3 -Dike 123 0 30 0 0
# 4 -Foundation 120 0 28 0 0
# 5 -Bedrock 130 10000 45 0 0
Upper Surface of Material # 1 (Earthfill)
X-Coord Y-Coord
0 5550.5
310 5568
480 5602
900 5605
Upper Surface of Material # 2 (Tailings)
X-Coord Y-Coord
0 5550.5
310 5568
390 5568
480 5598
495 5598
500 5596. 5
900 5598
Upper Surface of Material # 3 (Dike)
X-Coord Y-Coord
(1 5550.5
5568
390 5568
480 5598
495 5598
500
620
900
5596. 5
5557.5
5560
r-~er Surface of Material # 4
X-Coord Y-Coord
0 5550.5
310 5568
390 5568
620 5557.5
900 5560
Upper Surface of Material # 5
X-Coord
0
900
Y-Coord
5540
5540
(Foundation)
(Bedrock)
There are no explicit external forces in the data set.
GSLOPE 3.26a
LIMIT EQUILIBRIUM SLOPE STABILITY ANALYSIS
Licensed by MITRE Software Corporation, Edmonton, Canada for use at:-
Titan Environmental -Bozeman MT
Results are for Bishop's Modified Method unless otherwise noted.
File C:\STABLITY\GSLOPE\WHTMESAl.GSL Output dated 07-03-1996 at 11:55:05
Material Unit Wt Cohesion Friction Piezo Ru
Angle Surf ace Value
# 1 -Earthfill 123 0 30 0 0
# 2 -Tailings 62.4 0 0 0 0
# 3 -Dike 123 0 30 0 0
# 4 -Foundation 120 0 28 0 0
# 5 -Bedrock 130 10000 45 0 0
X-centre Y-centre Radius Factor Iterations Slices M Alpha
of Safety Warnings
322.60 5732.50 165.50 2.9103 4 11 0
22.91 5732.50 165 .50 2. 9101 4 11 0
...>23.23 5732.50 165.50 2. 9164 4 12 0
322.60 5733 .13 166.13 2.9101 4 11 0
322.91 5733.13 166.13 2. 9159 4 12 0
323.23 5733.13 166.13 2. 9164 4 12 0
322.60 5733.75 166.75 2.9099 4 11 0
322.91 5733.75 166.75 2. 9160 4 12 0
323.23 5733.75 166.75 2. 9164 4 12 0
Minimum Bishop Factor of Safety this run:
322.60 5733.75 166.75 2.9099 4 11 0
Material
Earthfi 11
Tailings
Dike
Foundation
Bedrock
5600
0
Un it Wt
pcf
123
62.4
123
120
130
Seismic coefficient
I
100
=
c
psf
0
0
0
0
10000
. 1
I
200
Phi
deg
30
0
30
28
45
Piezo Ru Titan Environmental -Bozeman MT
Surf. 6111. 001
0 0 EFN White Mesa Slope Stability 0 0
0 0 7/1996
0 0 Pseudostatic Analysis
0 0
ground accln. = 0 .1g
WHTMESA2.GSL
+
F = 1.903
~;:::==:;;;::s:;;:============================== -5600
I
300
I
400
I
500
I
600 700 800 900
DATA FILE NAME ..... C:\STABLITY\GSLOPE\WHTMESA2.GSL
,• ·, No.
le
Date
Label A
Label B
Max Slice Width
Set Neg. Normals to zero
No. of Materials
Seismic Acceleration
External Forces
Piezometric Surfaces
Unit Wt. of Pore Fluid
10
y
5
.1
0
6111. 001
EFN White Mesa Slope Stability
7 /1996
Pseudostatic Analysis
ground accln. = O.lg
0
62.4
Material Unit Wt Cohesion Friction Piezo Ru
Angle Surface Value
# 1 -Earthfill 123 0 30 0 0
# 2 -Tailings 62.4 0 0 0 0
# 3 -Dike 123 0 30 0 0
# 4 -Foundation 120 0 28 0 0
# 5 -Bedrock 130 10000 45 0 0
Upper Surf ace of Material # 1 ( Earthf i 11)
X-Coord Y-Coord
0 5550.5
310 5568
480 5602
900 5605
Upper Surf ace of Material # 2 (Tailings)
X-Coord Y-Coord
0 5550.5
310 5568
390 5568
480 5598
495 5598
500 5596 .5
900 5598
Upper Surface of Material # 3 (Dike)
X-Coord Y-Coord
(' 5550.5
5568
390 5568
480 5598
495 5598
500
620
900
5596. 5
5557.5
5560
r· 'er Surface of Material # 4
X-Coord Y-Coord
0 5550.5
310 5568
390 5568
620 5557.5
900 5560
Upper Surface of Material # 5
X-Coord
0
900
Y-Coord
5540
5540
(Foundation)
(Bedrock)
There are no explicit external forces in the data set.
GSLOPE 3.26a
LIMIT EQUILIBRIUM SLOPE STABILITY ANALYSIS
Licensed by MITRE Software Corporation, Edmonton, Canada for use at:-
Titan Environmental -Bozeman MT
Results are for Bishop's Modified Method unless otherwise noted.
File C:\STABLITY\GSLOPE\WHTMESA2.GSL Output dated 07-03-1996 at 12:14:06
Material Unit Wt Cohesion Friction Piezo Ru
Angle Surface Value
# 1 -Earthfill 123 0 30 0 0
# 2 -Tailings 62.4 0 0 0 0
# 3 -Dike 123 0 30 0 0
# 4 -Foundation 120 0 28 0 0
# 5 -Bedrock 130 10000 45 0 0
x-centre Y-centre Radius Factor Iterations Slices M Alpha
of Safety Warnings
22.60 5732.50 165.50 1.9036 4 11 0
322.60 5732.50 166 .13 1. 9067 4 12 0
322.60 5732.50 164.88 1. 9160 4 11 0
MIN THIS CENTRE 1. 903
322.91 5732.50 165.50 1. 9037 4 11 0
322. 91 5732.50 166.13 1. 9067 4 12 0
322. 91 5732.50 164.88 1. 9163 4 11 0
MIN THIS CENTRE 1.903
323.23 5732.50 165.50 1.9066 4 12 0
323.23 5732.50 166 .13 1.9068 4 12 0
323.23 5732.50 164.88 1. 9165 4 11 0
MIN THIS CENTRE 1. 906
322.60 5733.13 166 .13 1. 9035 4 11 0
322.60 5733 .13 166.75 1.9067 4 12 0
322.60 5733. 13 165.50 1. 9160 4 11 0
MIN THIS CENTRE 1.903
322. 91 5733.13 166.13 1.9062 4 12 0
122.91 5733 .13 166.75 1.9067 4 12 0
322. 91 5733 .13 165.50 1. 9162 4 11 0
MIN THIS CENTRE 1. 906
323.23 5733.13 166.13 1. 9066 4 12 0
323.23 5733.13 166.75 1. 9067 4 12 0
323.23 5733.13 165.50 1. 9164 4 11 0
MIN THIS CENTRE 1. 906
322.60 5733.75 166.75 1. 9034 4 11 0
322.60 5733.75 167.38 1. 9067 4 12 0
322.60 5733.75 166.13 1. 9159 4 11 0
MIN THIS CENTRE 1.903
322.91 5733.75 166.75 1.9062 4 12 0
322. 91 5733.75 167.38 1. 9067 4 12 0
322. 91 5733.75 166.13 1. 9161 4 11 0
MIN THIS CENTRE 1. 906
323.23 5733.75 166.75 1. 9066 4 12 0
323.23 5733.75 167.38 1. 9066 4 12 0
323.23 5733.75 166.13 1. 9163 4 11 0
MIN THIS CENTRE 1.906
Minimum Bishop Factor of Safety this run:
322.60 5733.75 166.75 1.9034 4 11 0
TIT AN Environmental
By _KG_ Date .JJ!2Q_ Subject EFN White Mesa Mill Tailings Cover
Chkd By Pf'A-Date GJ/q0 Stability Analysis of Side Slopes of the Cover
PURPOSE:
Page_l_of_2_
Proj No 6111-001
Pseudostatic Slope Stability Analysis of the Side Slopes of the Cover for horizontal
acceleration of 0.12g
The purpose of this calculation brief is to evaluate pseudostatic stability of the side slopes of the
cover for the uranium tailings impoundments for a horizontal ground acceleration of 0.12g. The
sides of the covers are sloped at 5H:1V. From the old drawings as published by UMETCO (section
B-B), the side slope for Cell 4 is the tallest. Also, along the southern section of Cell 4, the ground
elevation drops rapidly. Hence the side slopes of the cover located along the southern side of Cell 4
are assumed to be critical and considered for stability analysis.
METHODOLOGY:
Pseudostatic slope stability analyses have been performed for the slope geometry as shown in
Figure 1. The limit equilibrium slope stability code GSLOPE, developed by MITRE Software
Corporation has been used for these analyes. The Bishop's method of slices has been applied.
Geometry and Material Properties
Along the southern end of Cell 4, the topography drops at a rate of approximately 5 .5% (Figure 2).
The material properties as provided by Dames and Moore, 1978, have been used for these analyses.
The material properties have been listed in Table 1, below.
Material Type of Unit weight, y Cohesion, c Angle of
No. Material friction,~
(pct) (psf) (degrees)
1 Earthfill 123 0 30
2 Tailings 62.4 0 0
3 Dike 123 0 30
4 Foundation 120 0 28
5 Bedrock 130 10,000 45
Table 1: Material Properties
The surface of the bedrock has been determined from the bore-logs as supplied by Chen and
Associates, 1978. But as this bedrock surface almost coincides with that of the foundation,
assuming the bedrock layer to be about 10 ft. below the lowest point of the foundation surface, will
D:\PROJECTS\6111·-001 \STABLTY2 .DOC
TIT AN Environmental
By _KG_ Date .J..!!)Q_ Subject EFN White Mesa Mill Tailings Cover
Chkd By_fl!'L Date-Stability Analysis of Side Slopes of the Cover
Page_2_of_2_
ProjNo 6111-001
give conservative results. Thus, for the stability analysis, the surface of competent bedrock has been
assumed to be at an elevation of +5540 ft. above mean sea level (MSL).
Factor of Safety and Horizontal Acceleration required for analysis:
A factor of safety of 1.0 is acceptable for pseudostatic. Pseudostatic slope stability analysis has
been performed for a maximum seismic coefficient of 0.12g as recommended by the Lawrence
Livermore National Laboratory.
RESULTS:
Results for Pseudostatic case: For pseudostatic analysis, the maximum Factor of Safety calculated
is 1. 778 (> 1.0) for a ground acceleration of 0. l 2g.
Hence the side slopes are stable.
REFERENCE:
a) Chen and Associates, Inc., 1978. Soil Property Study, Earth Lined Tailings Retention Cells,
White Mesa Uranium Project, Blanding, Utah.
b) Dames and Moore, 1978. Site Selection and Design Study -Tailing Retention and Mill
Facilities, White Mesa Uranium Project, January 17, 1978.
c) Report by "Lawrence Livermore Natioal Laboratory"
d) "GSLOPE Limit Equilibrium Slope Stability Analysis'', Mitre Software Corporation,
Alberta, Canada
0: \PROJECTS\6111 ~001 \STABLTY2 .DOC
Material Unit wt c Phi Piezo Ru Titan Environmental -Bozeman
pcf psf deg Surf. 6111. 001
Earthfill 123 0 30 0 0 EFN White Mesa Slope Stability Tailings 62.4 0 0 0 0
Dike 123 0 30 0 0 7/1996
Foundation 120 0 28 0 0 Pseudostatic Analysis
Bedrock 130 10000 45 0 0
Seismic coefficient = .12 ground accln. = 0.12g
WHTMESA4 .GSL
+
F = 1. 778
5600-~:;::::==:;;:~============== -5600
0 100 200 300 400 500 600 700 800 900
DATA FILE NAME. . . . . C: \STABLITY\GSLOPE\ •·--~MESA4. GSL
Job ~. ~,\\\fl\ 0 ~itle £'.\ p't
Date'
'·A
L 1 B
Max Slice Width
Set Neg. Normals to zero
No. of Materials
Seismic Acceleration
External Forces
Piezcxnetric Surfaces
Unit Wt. of Pore Fluid
10
y
5
6111.001
EFN White Mesa Slope Stability
7/1996
Pseudostatic Analysis
ground accln. = 0.12g
.12
0
0
62.4
Material Unit wt Cohesion Friction Piezo Ru
# 1 -llarthfill 123
# 2 -Tailings 62.4
# 3 -Dike 123
# 4 -Foundation 120
# 5 -Bedrock 130
Surface of Material # 1
X-Coord
0
310
480
900
Y-Coord
5550.5
5568
5602
5605
Upper Surface of Material # 2
X-Coord Y-Coord
0 5550.5
310 5568
390 5568
480 5598
495 5598
500 5596.5
900 5598
Upper Surface of Material # 3
X-Coord
0
310
390
500
620
900
Y-Coord
5550.5
5568
5568
5598
5598
5596. 5
5557.5
5560
Angle Surface Value
0 30 0 0
0 0 0 0
0 30 0 0
0 28 0 0
10000 45 0 0
(llarthfill)
(Tailings)
(Dike)
upper surrace or Material # 4
.X-Coord
0
310
390
Y-Coord
5550.5
5568
5568
5557.5
5560
Upper Surf ace of Material # 5
X-Coord
0
900
Y-Coord
5540
5540
(Bedrock)
There are no explicit external forces in the data set.
GSLOPE 3.26a
LIMIT EQUILIBRIUM SLOPE STABILITY ANALYSIS
Licensed by MITRE Software Corporation, Edmonton, Canada for use at:-
Titan Environmental -Bozeman MT
Results are for Bishop's Modified Method unless otherwise noted.
File C:\STABLITY\GSLOPE\WHTMESA4.GSL Output dated 08-28-1996 at 13:09:05
Material Unit Wt Cohesion Friction Piezo Ru
Angle Surface Value
# 1 -Earthfill 123 0 30 0 0
# 2 -Tailings 62.4 0 0 0 0
# 3 -Dike 123 0 30 0 0
# 4 -Foundation 120 0 28 0 0
# 5 -Bedrock 130 10000 45 0 0
x-centre Y-centre Radius Factor Iterations Slices M Alpha
of Safety Warnings
322.60 5732.50 165.50 1.7777 4 11 0
22.91 5732.50 165.50 1.7778 4 11 0
323.23 5732.50 165.50 1.7804 4 12 0
322.60 5733.13 166.13 1.7777 4 11 0
322.91 5733.13 166.13 1. 7801 4 12 0
323.23 5733.13 166.13 1. 7804 4 12 0
322.60 5733.75 166.75 1. 7776 4 11 0
322.91 5733.75 166.75 1.7801 4 12 0
323.23 5733.75 166.75 1.7804 4 12 0
Minimum Bishop Factor of Safety this run:
322.60 5733.75 166.75 1.7776 4 11 0
TIT AN Environmental
By KG Date 7/96 Subject _E_FN~Wh~~ite~M=e~s=a_M~i_ll_T~ru_·l_in--<-g~s~C~o_v~er ___ _
Chkd By __ Date___ Stability Analysis of Side Slopes of the Cover
FIGURES
Page __ of __
Proj No 6104-001
~··
~· v
I
I
! -~-a-==-
' 0
t dJ_;;,Z-2c G J s? 32 5
-r-/
; i I
I
s-7 ·s2 < r
t:;:>' -:t -G
-~_<): ~ ~
i I
SLOPE STA /3 f L {TY AN AL y s I s ALON CELL-:1 :DIKE
(s£CT10N B-B BY uM}f'.-TC.o) -.. --
..... ' ' ' 0 0
() 0 N
r/=-~+~­
S',2.0-,.
..... \
Q 0 t"l I
5500 -
'' ·--... I
0 II:;) -.r
1 _ .. --•
....
::i •
I
0 0)
\ ' --. r· ,. -· 1) ;·. ', \C\. vv •'~-···
+5609.2
W. L. 5578.8 +
CFLL ~.
)
5575.2 +
\~5569.2
BH-16
/
18 •
~··.··
)
EXISTING CELL 3_
17'. •
WL !>5970 .,
16 • 1~ •
RF-5.
TIT AN Environmental
By KG Date . 7 /96 Subject _E_F_N_Wh~~it~e _M~e~sa_M~il~l ~T~ai~li_n._,gs~C~ov~e~r ___ _
Chkd By __ Date___ Stability Analysis of Side Slopes of the Cover
APPENDIX
Page __ of __
Proj No 6104-00 I
I
I
I
I
I
I
I
I
I
,: chen and associates, inc.
CONSULTING ENGINEERS
rotl ' f O<Jta)A TIOtl ~ S. ZUNI DEHVER, COLORADO 10223 3-03/74+7105
EHGIHEEllH' 1~.( EAST ARST STREET • CASPER, WYOMING IZS01 • 3-07/23-4-2121
Job No. 16,406
SECTION 2
Extracted Data From
SOIL PROPERTY STUDY
EARTH LINED TAILINGS RETENTION CELLS
WHITE MESA URANIUM PROJECT
BLANDING, UTAH
Prepared for:
ENERGY FUELS NUCLEAR, INC.
PARK CENTRAL
1515 ARAPAHOE STREET
DENYER, COLORADO 80202
July 18, 1978
......... -s~
_,, ...... -56-H-
·-·· .. ---56-1~
···-.. ·-·-5605-
""' I-. UJ. UJ . . · u;;·····56M-......,. . ' ....
Z· o:
I-< .. ··>-·-579 UJ . .
...J. UJ .
.. ···5590--
.. ··5585··
... i.Q...:..:.
I , , . , . T ..
I :: . , ..
..... !
: !
······················-············-··"'"'""""···"·-···
• i::: • I .. l
i.
................ _ ... ,; .......... _ ..................... ,_ ... ________ _,, .. ,1 ......... , .. _,,,, .................. ·-···· -·······-····· ., .• . .... (CHEN.& ASSOCIATES) ................................... .
WHITE MESA PROJECT .. ! . '. . "i ·. . . ! ' ........ ' ... .
..... 46.i' ..
.: ... : ...• ~~··
~· w.
.. /ii-s-m ....., ....
z .... .. o: .... :.
;: < .. ... > ... -5-.SBS-
W ..J. .w .
........ 5-.soo-
i:
. :
J : .
;
! .
• ! '
.FlGURc 3
·I&-·
. ,. . : : : : : : r ... ~ .::i48
: : : : : :ii:
. : : : : : :ll.
LOGS OF EXPLORATORY BORINGS
............. (CHEN.& .ASSOCIA T.E Sl
WHITE MESA PROJECT.
.. '"':-?6 ..
,...._.
i-.. UJ .. UJ .. u:;--?59 ............
z· o:::
I-. c( .
·>·-5585-
UJ .... ::
..J .... "
.ll! : :
......... -55.70.
5565
i . ' !
.. i.
!
. i. ! . '
. : I
i.
'
. \
. : j. ! .. •. ! . i.
.......... ................... -........................................ c ............. -............... -............................................. _,,_,, _____ , ........ .
FIGURE 4
-·5600---
··::·:P .. .w
"""W .5~~
"" z . : ::o
: : : : ;:::
.. "."" ~85-> .. : : ::w ...... ..J
: : : : : : rµ
55-1-5-·-·
LOGS OF EXPLORATORY BORINGS
. ............. CCHEN&.ASSOCIATES) ..... .
WHITE MESA PROJECT
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1
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.. I . I . . . . . I .
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T i: : i:::::'::: I.::::: .. ! ' ! " . ' .. i:: i'. LOGS OF EX;~~~A~ORY BORINGS: '
. , I .. ' ....... (CHEN.&.. ASSOCIATES) ..... .
WHITE MESA PROJECT ............ !,. ....
, I.
....... ...... ............................. , .................................... , ....................... -.......................................... -.......... .. .. i. I· ..
.......
I-"-. w. w ' " ~---554 ..........
z
0
~. <: > ......... .
w
..J'' w
......... :::::::::1;::::::>:1;:::::::::1'::::::;:: :::::::::1·:::::::::1:::::::::li:.:::::::1'::: ' : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : I::::::::: : . : : : : : : : : : : .. : . : ~: 1.±1 : : : : JJ..l/ :...:.llJf : : : : ~~: and:1: : : : : : : : : : : : : : : : : I : : : : : : : : : : : : : : : : :·: : . : : : : ' : :
I : ' : : ' : .. : I : : ' : : : : :
'I''''''' ' ''''' '•''
' l&:1t:;4 : : : ' : : ii~i.: 7.S:
--·--.. --.. :!L~5559:: .: .. J: t1:.;s3i;o:
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LJ__J__ un 0 : I:
. T ···-.. ·--·········-·-···-·-·~···-· . r.
'' ''
! . 1
:
.............. __ ·-:--r-.
I I
i .. !
....... t-: . . . .. .. .. . " ..... 'l" . rJ .::::::w ::::::::: ::::::::: :::: 171
:::::::~ ::::::::: :::::;::: :::: Ll . . . ' ......... ' .. ' .... . ' . ' ~* : :z:_ ... ' ' ' ' . ' ' ' ... ' . ' ' ' ' . '
'' ... ' 0 ' ' ';-:--.' --:-: ' [?I : : : : f: . : : j Ll ... ,I. .. ... ::<I; ...................... ,
·· · 1u•o······· ...... >. ····
: .: .. : .. :_.J_ .. : .. ~ :ptt~~:: : .. ~~. ·::: :~:j.iL~~_i_~.i.~.~-~.i.1 ... ~~J im
, __ L: _2 [: -u Id _l2 T l 1 ~
Sand (SM), silty, fine to ••diUlll grained,
1li&htly aoi1t to aoi1t, reddish brove.
approximately 40-50% silt,
Sand, silty co aandy lilt (SM-Ml.), Une to ••dium grained, approximately
50-60% silt, slightly ao11t to aoi1t, r1ddi1h brovn •
Silt (ML), aandy, approximately 60-70% lilt, fin• to •odium sand aize,
slightly calcareous vith depth, slightly aoi•t to moi1t, reddish breve to
Hsht brovn •
Clay, silty to sandy silt (CL-ML), approximately 60-75% lov to con-plaacic
finu, fin• to medium sand 1izt, slightly to moderately calcareous vith
depth, ali&htly aoiat, light brOV11 •
Clay (CL), highly calcareous, undy to silty, approximately 50-75% lov
plasticity fi1111, scattered very hard leD.Ses/layer, dry to slightly moist,
light tac to vhit•.
lluthared clay1con1 (CL-CB), approximately 90% aedium to high plasticity
f inea, •oi•t, •gray-brovn •
Clay1to11a, bedrock, slightly aoi1t, grao11i1b gr1y.
Clay1ton1-1and1t0Dt bedrock, lightly ceaentad, roughly 1cratified, fin• to
••dillll &rained, 1r1111isb gray.
Sacd1to11• badroclc, vell eement1d vith depth, fine to aedium grained, tan to
gray.
I : ........ 1 ....... ·1 ................. j .... ~
' ! .. ' I . : : :: : : : : I' : : : : : : : : : : : : : : : : : : hl: : :28: : : : ::: I : <1 : ; ' ..... · .... -.-!'--.. : : ' . . . : : : : . : : : : . : : ·-: . : : : . : : : _: : : > ~ ·····-·--··--·· .. ·-···!······ ---
' : : • : : : : : : : : : : : : :]_·: ·: 1 : : : : : : : : : : : : : : : : : : , : : : :. f-. Dbturbed auger umple.
1 ·::'':::: : : •• : : : : : : : : : : : ' : : : : : : : : .1::: :· !". I : ' : : : .. : : : : '. .. .. : : : : : : : " I :: :: :: ::: l : : : : NOTESI · · I.::.::::: L: ·:: '. : : : : '.: '.: '. ~: : : : :. (1) Tut holu vm drilling 011 May 17 and 18, 1978 vitb
. ··-:---:-:-(.-.. -. --:--.-.-.·! · ... ~ .... , ... -:-.--.. -. -. I ...... :-:j-:-:--:--;-single-flight, pover auger.
: :
1
: : : : : : : : : . : • : : : : : 1 : : : : • : : : : J : : : : : : : : : • : : : : (2) thvatio111 an approximate and taken fro• contours shove 011 Fig. 1.
.. ' .... · " .. , ........ · 1 · · · · · · · · · · · · · ..... J . . . . (3) No fru vater vu found in tut holu at the time of drilling.
: : : : ! : : : : : : : : . 1.:::::::: : : : : : . : : : I::::::::: I:::: (4
) ~io; ~a~=~c;~~t;:!.l!~1No. 200 Sieve;
· · · · I · · .. · .. · . I · . · · .... · I ......... I ......... 1 . . . . LL • Liquid L1ait (%); --:----·j·------··---·-·r:--.-. ~--:---:-:-r-.-. -·-:-·--:-·[-.-.-.-.-.-.-.-;-:--~-:-PI • Plaaticity Index (%)
· j ·. I· : ::1.·:.::::: :.: ::·::!:.: NP•Noc-Plaatic.
I I : . ' .. . i'"" "" """'! ........ , "' .... -... -.. --: .............................. -: .. l .. ~.· .. ~~-~: ... ~LL .. ~.~·~·~·~L..l~ .. :-~ .. : ... ~ .. ~-: .. J .. ~ .. :_: .. : ... : ... ·_:_:_:J.: ... : ... ~~ .. :~~-J .. ~.: .. ~:. ._ ...... :. ' .. : ! : : : : . : : : : I .. : : . : : . : ·. ,:, . . •• \ : . • . ' i " j ' •• \ :
' . . ' i '
a 12-inch,
FIGURE 9
i , , I. .. r . . i i . LOGS OF EXPLORATORY BORINGS
{CHEN & ASSOCIATE SL ..
WHITE MESA PROJECT
SECTION 4
Extracted Data From
REPORT
SITE SELECTION AND DESIGN STUDY
TAILING RET£::.;rroN AND MILL FACILITIES
WHITE XESA URANIUM PROJECT
BLANDING, UTA~1
FOR E~t:RGY FUELS NUCLEAR, INC.
Dam~s and Moore
January 17, 1978
09973-015-14
I
I
I
I
I
I
t
I
-25-
3. 8 --·st~b1Tffy·-~~--.
3.8.1 Sl-0pe Stabili-ty .. ----
The ·external dikes formed by cover placement Oh Cell 2·wnT ·be-exTended.
t.o a. reclaimed slope of 5(H) to l(V) but may-exist--un·an··--nrtenm-Dasfs
as_ -~-~_L to. -1-(V) s-lup-es"'uflf f l-'firla.T--recTa."maiiori :·--·-A·· sraoTTrty·-an-1ffy s i s
was_.pe-rforme·d-us1ng -tllej\ H}" .. to · -1 -(-V-)--slo pes .. --lhe--max.:Hnum--section ·a f the
~.:H+-tnrVe a 15-foot\?tde--ber-m--.at--i.ts-·ha:s e . The soil strength
parameters used in the analysis are those developed by Dames & Moore
(1978a) and are as follows:
Soil Parameters
for
Slope Stability Analysis
Density c
Section (Pcfl (Degrees) ill.fl
Embankment 123 30 0
Tailings 62.4 0 0
Foundation Soils 120 28 0
Bedrock 130 45 10,000
r/
\ '•tv
/-\ ( Q I ..
\ \ ~-. \ .. . \ 10 \j '
\ G.\\ 'J ~~\\
... w w ...
= :c I-"-w 0
BORING NO.
EL. 5629.0 FT.
o-~~~~~~~S-M~~RE-D---B-RO_W_N~FI_N_E~SA_N_O~AN-O~S-IL-T-.~­
ML MtDIUM DENSE
6.0\-118 75
CRAOI:.IG CALCAREOUS ;.t!TH C;L-
CITE STRINGERS
10
15 CL LICHT BROWN, SILTY CLAY. HA.<'" (WEATHERED CLAY61'0NE)
MEDIUM BROWN, VERY FINE-GRAINED SANDSTONE; INTERLAYERED WELL-CE.'<£NTED ANO THIN, POORLY-CEMENTED BANDS
HOLE COMPLETED 9/10/77
NO CROU!>ID WATER EllCOv:ITEREn
BORING NO. 2
EL. 5634.3 FT.
O-----~~~,..-S-M-/~-RE-D--B-ROWN~~-F-I-!1-E~S-AN~D-A_N_D_S_I_L_T-.-~
50/ GRADING CALCAREOUS WITH CAL-
• 5;• CITE STRINGERS
5-
----'nlflH fi1; ML Mf:llIUM DE:tSi:
:;; 5·.L.l.:..L"-l!._...L'-1,Ufillll w ... =
~ fu 15------l~ a
25------
CL GREEN-BROWN SILTY CLAY (WEATHERED CLAYSTONE), HARD
GREENISH-BROWN, FINE-CRAIN£D SAND-
STONE: INTERLAYERED WELL CEH."NTED ANO POORLY-CE.'IENTED BANDS
HOLE COMPLETED'9/10/77
NO GROUND WATER ENCOUNTERED
BORING NO. 4
I-5.l\-107 w w ...
= :x: ...
"-... a
EL. 5623.2 FT.
REO-BROWN FINE SANO A..t.10 S IL'J·,
!'IEDIUM DENSE
GRADING CALCAREOUS WITH CAL-
CITE STRINGERS
GRC£~ FI:U:-GAAINEO s.;;:.;~sTOr-;E; IN-
TERL.;YERED WELL CEMENTED AllD
POORLY-CE.'IENTED BANDS
HOLE COMPLETED 9/10/77
~O GROUND WATER £.i.~COUNTER.ED
LOG OF
... w w ... =
:c ... "-w 0
I-w w ...
?i
~ "-w 0
6.2\-
10
15
BORING NO. 5
7
EL. 5632.9 FT.
,. SM/
ML
~OS
RED-aROWN FINE SAND AND SILT, M£DIUK !lENSE
GRADING CALCAREOUS WITH CAL-CITE STRINGERS
CREE."I TO BROWN, rr:•c;-CRAINEO s.'l."10-
STONE: LA YEREO 11£0 IUM TO WELL CE-
ME.~TED WITH LITTLE POORLY CE.~ENTED
20------HOLE COMPLETED 9/10/77
0
s.
15
20
NO GROUND WATER ENCOUNTERED
BORING NO. 6
EL. 5633.5 FT.
SM/ RED-BrtO"N FINE SANO AND SILT,
ML ME!lllin DE!>ISE
GRADES CALCAREOUS WITH CAL-
ISi 39 c ITE STrtWGERS ANO OCCAS rm·
ZONES OF MASSIVE CALCITE CE
MtNTATION
6\-108 • ~~! 1 I
LICllT BROWN TO GREEN CLA y
• 82 (WEATHERED CLAYSTONE) , HARO
:;/, CL
.::::::::· "'"~ OFF-"ft'llITE SANDSTONE, VERY WELL
CE!tE.IT~D
HOLE COMPL~ED 9/18/77 110 Cl'>OUND WATER ENCOUNTERED
KEY
A-B • ~ INDICATES DEPTH AT WHICH UNDISTURBED SAMPLE WAS EX-
TRACTED USING DAMES ' MOORE SAMPI ta
T
I r 1
oc
!SI c
B
D
E
INDICATES DEPTH AT WHICH DISTURBED SAMPLE WAS EXTRACTED
USING !)AMES ' MOORE SAMPLER
INDICATES SAMPLE ATTE.~T WITH NO RECOVERY
INDICATES DEPTH AT WHICH DISTURBED SAMPLE WAS-EXTRACTED USING STANDARD PE.~ETR.\'IION TEST SAMPLER
FIELD MOISTURE EXPRESSED AS A PERCENTAGE OF THE DRY
WEICHT OF SOIL
DRY D£NSITY EXPRESSED IN LBS/CU FT
BLOWS/FT OF PENETRAT!ON USI!>IC A 140-LB HA.~R DROPPING 30 INCHES
INDICATES NC CORE RUN
PERCENT OF CORE RECO'fl:RY
RQO•
F PER"i.EASILITY ME.ASUR.£0 BY S!NGL£ PACKER TEST I~ FT/YR
NA NOT APPLICABLE (USED FOR RQD IN CLAYS OR MECHANICAL~Y FRACTURED ZONES)
NOTE: ELEVATIONS PROVIDED BY E.~ERCY FUELS NUCLEAR, INC.
• ROCK QUALITY OESIC~ATION --PERCENTAGE OF CORE RECOVEP~D !~ LENGTHS GREATER THAN • INC~ES
BORINGS
DAMES e. MOORE
Pl AT!=" A-~
.. ... "' ...
?:
:c .. a.. "' Q
BORING NO. 3
EL. 5634.4 FT.
0 _____ _,,.......,..,...,,..,...,...,...--------~--~--~-
11 ! "r' 7.6;-100 7.0\-109 • JS -·;1
tsl lJ ! 10 -------1-.1!
iill
25
,...
JO
I 56D
T
35
2.8
40
I
-1-
45
5.8
so
.l.
55
16.2
60
I
T
65
I
I
I s. J
70
.l.
;·
J.2
80
RED-BROWll. FINE SAND AND SILT,
LOOSE
GRADING CALCArtEOIJS WITH Mil'OR
CALCI~E STRINGERS
BROWN SILTY CLAY (WEATHERED CLAY-
STONEJ , HARD
DARK CRAY. Fii-T,; CAAI~E.O. SILTY
SANDSTONE WITH YELLOW BA<iDS; HOSTLY
WELL CEME~ED il!JT WITH SOMC THIN,
SOFT. CLAYEY a;~';DS
LIGHT GRAY, HEDIUK GRAI:<ED. WELL
CEIU:.'frED S~NDSTONE WI711 ORA.~GE
LIHONITE s·rAINED BANDS
LICHT TO MZOIUM CR££?-'-8R()y{N,
MEDIUM TO .:OARSE-GRAINEO SAND-
STONE
WELL CE! !ENTUl
GROUND WATER LEVEL 56.8 FT
ll/4/77
CONGLOMEifATE IN LIGHT GRAY, FWE
SANO MATRIX FROM 62.4 TO 6l FT
GRADES THROUGH WHITE SILTS.-ON£
TO A GREEN CLAYSTONE
YELLOW, MEDIUM-GRAINED SANDSTONE
DRILLIHG INDICATES GENERALLY
WELL-CEM.E!'TED SANDSTONE •HTH
MI:;ua CONGl'..Offi:RATE BANI:S
MATCH LINE
LOG OF
9u
T
I 7l
95 15
1
100
4.9 I
105
T
I
110 .. "' .... ...
?: 115
j5 0 ... "' Ls Q
120
I 173
T
125
145------
BORINGS
MATCH LINE
LIGHT GRAY, Filll:•GRAINED SA.'ID-
STONE. POOiU.Y CEXE:ITED I>I PARTS
L:t;HT BROWN TO PA:X CRAY~ FINE: ':'O
:<EOICM-Gil.ArNto 5,~~CSTONE
INTERLAYERED £.A.";DS OF SANDY, GREEN
CI.AYSTONE AND PALE BROWN SANDSTONE
DRILLING I~OIC\1£S UNFRACTUREO,
iil£:..!. CE."lEz-.-:a:o s.:.scsro:-:E
HOLE COMPLL.CO 9/H/77
DAMES & MOOIRE
PLATE A-4
.... ... .... IL
::!:
:r .... ... ....
0
.. ...
"' ... ..
i= 0.. "' 0
.. "' ... ...
:
i= 0.. ... 0
BORING NO. 7
EL. 5656.9 FT.
~0/
J.9,-lOl • 11 •
97/
10 ISl io·
; )/
15 fil !j•
20------
OS
RED-BRO.<N FINE SAND AND SILT,
XEDIU:t DENSE
GRADI:IG CALCAREOUS WITH CALCITE
STRING<:RS AND OCCASIONAL ZONES
OF MASSIVE C~~l"':'E C~'i.E!.."T..\TIOS
PALE BROWN, FINE GRAINED, WEATHERED
SANDSTONE, GRADING HARDER
DARK BROWN TO DARK CRAY. FINE TO
HEDIU.'\ GRAINED, WEATHERED SA.~DSTO.;£,
GRADES HARDER AND TA.~ COLORED
INTERBEODED H.\RD Al•D VERY HARD,
LIG!IT GRAY SA.'IDSTOr.:E
HOLE COHPLL~EO 9/13/77
NO GROUND WATeR ENCOUNTERED
BORING NO. 10
EL. 5690.9 FT.
85/
6. n-106 •lo·
ISl 84/
10 a-
15
20------
RED-BROWN FINE SAND AND SILT,
DENSE
GRADING CALCAREOUS WITH CAL-
CITE STRINGERS
GRADING VERY CALCAREOUS AND
VERY DENSE
YELLOW TO GREEll. nm; TO HEDIUll
GRAINED, WEATHERED SANDSTONE
0GRADING UARD, GREEN, llEDIUH TO
COJ\!'SE•GRAINED SANDSTONE
HOLE COHPLETED 9/19/77
NO GROUND WATER EllCOUNTERED
BORING NO. 13
EL. 5602.4 FT.
io------
RED-BROWll FINE SA~D A.'lll SILT,
KEDIUll DENSE
PALE GREEN, MEOIUll-GRAINED SANDSTONE
BECOMES VERY WELL-CEHENTED
HOLE COMPLETED 9/18/77
NO GROUND WATER ENCOUNTERED
LOG OF
.. "' "' IL
::!:
j.::
0.. .... 0
... "' ... ...
::!:
:c .... ... ... Q
... "' .... ... ..
i= 0.. .... Q
10
15
20
BORING NO. 8
EL. 5668.4 FT.
37 ---
50/ ------0 2;· ------_____ __,__ --
RED-BROWN FINE SAND AND SILT,
DENSE
GRADING CALCAREOUS WITH CAL-
CITE STRINGERS
GRADING TO l1ASSIVE CALCITE
CEHENTAT ION
GREEN, MZDIUH TO COARSE GRAINED,
WE.ATHEReo SA~OSTONE
DARK GRAY, SILTY CLAYSTONE,
WU.11i£RED WITH YELLOW-ORA.~GE IRON
STAINING, GE.;ERALl.Y VERY DRY
GRADES TO VERY HARD
25-------i
DARK GRAY. HEDIUH-GRAINED SANDSTONE,
:U:l..,,;~IV£~¥ vncuv.:·N'Tl::.U
0
OFF-WHITE. MEDtUM-CRAINED SANDSTONE,
~LL CEHENTED
HOLE COKPLETEll 9/19/77
NO GROU!IO WA :"ER ENCOU:'<TE'1ED
JO------
0
10
BORING NO. II
EL. 5677.8 FT •
50/
(il4i,•
SM/ ML RED-BROWN l'INE SA!ID AND SILT
GRAD:NG CALCAREOUS WITH CAL-
CITE STRIN~ERS ANO SOH.E ZONES
OF 11ASSIV£ CALCITE CEHE!lTATION
LICHT BROWN, FINE GRAINED.
WEA THEaED SAt•DSTONE
GRADING WELL C£.'1E!IT£D
HOLE COl1PLETED 9/18/77
NO GROUND WA':'ER ENCOUNTt:REO
is------
BORING NO. 14
EL. 5597.5 FT.
RED-BROWN FI:'<£ SA.'10 AND S [LT,
XEDIUM DENSE
J.~\-1~5 • <2
~RACING CALCAREOUS WITtt CAL-
C: n: STRl NGERS
5
10
ts------
LIG<r.' GRAY TO OFF-WHITE. HEDIU~
TO COARSE-GRAINED SAl'DSTONE, VERY
WE~L C£.~'T£0
COLOlt GRADES TO YELLOW-TAN
HO!.£ CO~PLE:TED 9/18/77
NO CWU":'lO ~ATER ENCOUNTERED
BORINGS
0
10
15
20
25
JO
3;
~ 40 IU ...
= r:
:; -&!j 0
so
55
60
65
70
BO
T
I
J.
I
BORING NO. 9
2.7
EL. 5679.3 FT.
::::L;:SOS
RED-BROWN FINE SA."<0 ANO SILT
MOTTLED OFF-WIH~·£ MO GR.EL"',
WEATrlLa.£0 SILTY C.:L.\YSTO.u:
OFF-WHITE TO GREEN. CLAYLY,
WEATHERED SANDSTONE
GRADES riAROER TO CR££~ StU~~STONE
GREE~. FINE TO KEDILK-GRAINED.
WEATHERED, CLAYEY SANDSTONE
KF.OIUH CRAY, rI~YEY SILTSTONF.
Bl.ACK. HIGHLY WEATHLREO, SOFT,
LANINI.TED CLAYSTON£ WITH ORAl'iGE
LIHONITE-STAINEO LAYERS
HEOIUH BROWN, FINE TO HEOIUH-GRAINED
SANDSTONE: VARIES FROM MODERATELY
CEM£:NTEO TO VERY POORLY-CEMENTED
I
J..
-'------il~]i! M!:.L>lt.'"!i-URA!NEO SAUOSTONE. HOOEAATi:LY
CZ::U:NTEO. WITH IRON STAINING ALO"G
HORIZONTAL FRACTURE
~~::-:L~N:-:1
2.0
......
93
0.7
BANDED, LIGHT TO HEDIUH GREEN SILT-
STONE. CLAYEY AND SOFT IN PART
DARA GRAY TO BLACK, HEDIUH GRAI:;Ell,
WELL CEHENTt:D, CARBOtlACEOlJS SANDSTONt:
WITH SOME SOFT, BLACK. CLAYl."'C dAl<DS
OCCASIONAL.THIN, CARBONACEOUS
BAKOS C::-NT:NUE
VERY WELL CE.'IEliTEO, LIGHT GRAY TO OFF-
WKITE, MEDIUM-GRAINED SA."'DSTONE
POORLY-CE.'1£."<TEO PEBBLE CONG:.ox£RAT£
IN BROW!I, SA!lOY MATRIX, SOM£ UNCEME.!ITED
SANDY BANOS
HODERATELY-CE!-!ENTED TO POORLY-CEH£NTt:D
SAllDSTONE
GRADES WELL CEHEllTED
MATCH LINE
90
95
100
.... .... ....
"-105 :
:c .... a.. ....
0
110
115
120
125
130
135
l. l
I
I
0.3
100
89
...
·····-
-1-----ri .1. ............. .__ .......
LOG OF BORINGS
MATCH LINE
GRAY-SROWN, :U:OICN GRAINED, MODER-
ATELY TO ?OORLY-CE:U:tlTEO SANDSTONE,
HIGHLY cRACTIJREO BY DISKING PERPEN-
DICULAR TO CORE AXIS
GROCND WATER Li:V£L 99.B FT, ll/4/77
PALE GREEN, HEilIUH GRAINED, HARD.
SILICIFIEil SANOSTONL
PALE GRZEl•. SANO\' CLAYSTONE FROH
107. 7 TO 108.2 FT
DARK GREEN, HEUIUM GRAINED, CLA\'1'."'C
SANDS-:-ONE, MODERATELY HARO WITH MINOR
Il'CU:S IONS OF DARK BRO>l:I, ANGULAR
CAA'.t£!..-SIZ£0 Cil£R'!'
HOLE CO:.:PLETED 9 /2 7 /77
DA ... ES e ... oOAE
PLATE A-6
,_ ... ... ...
BORING NO. 12
EL. 5648.1 FT.
0
541 ~ 6"
·1 t ~~/
1 ------tllj t
88/
6.2\-104 • c·
50/ GI 2·
15 r
I --
5.1 1,0 I 20 !<.\
i" --
I
25 I
I
I
I 79.2
30
--I
I 100
35 I 67
J. --I
1.
RZO-BROWN FINL SANO ANO SILT.
DENSE
GRADING CALC.\REOvS WITH THiii
LAYERS OF VLRY C.\LCAREO~S
MATERI.\L
GREEN .\ND YELLOW, FI-'t: TO MEDIUM
CRAIN£0, ~CATH~R£0 SANDSTONE
GREEN, FINE GR;.I~ED, CLAYEY,
~EA.TKER£0 SANOS70Nt. WIT!! YCLLOW
AND RED I;t01' ST.\I"rnG
SECOM<::; Lt:S~ CLAYEY; MOST
CIRCULATION LOSl
VERY LIGHT dRO>iN TO GRAY• MEDIU11-
GRAINED SANJSTONE WITH SQ;{E ORANGE
STAlNING; MODERATELY TO WELL
CEMENTED AT TOP, SECOKES P00t<~f­
CEMENT1'D AT 35 FT
GENERALLY MODERATELY-CEMENTED
s.\UDSTOllE
!!: 40 I
i= I ... ... c
45 I
I ..
so I
I 65
I 70
75 I
I
I
so I
0.9
--
1.4
-nOJ 0
WELL-COIEllTCl SANDSTONE
MODERATELY-CE>U.NTED SANDSTO<iE
WELL CE.'IENTCO
WELL-CEMENTED S."\NDSTONE, APPAR-
ENTLY WITH OCCASIONAL FRACTUREu
ZONES
LIGHT BROWN, MED!t!M-GRAINED SAND-
STONE. MODERATELY CEMENTED, GRADING
WELL CEMENTED
LOG OF
100
..
::;10s ...
!!:
::c ,_ ... ~10
115
125
130
lJS
0
...
"' ... ..
!!:
i= 0.. "' 10 a
+
I
I 10. 7
I
..!.
GROU~D WATER ~LVEL 81.J FT, ll/4/77
CIRCU!.ATION LOST, STILL APPE.\RS
WELL CE:.~C:~TEO
BECOMES U:SS CEMENTED
SO!U: CIRCULATlON REGAlNED BUT
STlLL LARGE WATER LOSSES
WELL-CE."ie.<TEll s;_.~DSTONE
POORLY-C::."<ENTEO SANDSTONE
POORLY-ct::<E11TEO SA.~OSTONE
WELL-CEMJ;;<TED S.\NDSTONE
POORLY-Ct::<ENTEO, POSSIBLY CONGLOll-
ERATE OR FRACTt:RED SA.~DSTONE
MODEAATELY-CEMLNTED SANDSTONE
POORLY-CE:<ENTED SANDSTONE
WELL-COU:NTED SAUDSTONE
HOLE COMPLETED 9/29/77
BORING NO. 15
EL. 5600.7 FT.
M MEDIUM DE.~E
GRADING CALCAREOUS WITH CALCITE ! ~'Ml/ Rl:O-BROWN FINE SAND AND SILT,
~-~~·~~6~3~'.::::~i"'j~ STRINGERS ::-::-:::-CLS GREEN, WE."\TIIERZil CLAYSTOl<E
G RI t,;Sl2.S.'1 .. FIN.i:. TO MEOlU!i-CRAl!'lt:U
SA.~DSTONE
GRADES WELL CEMENTED
15 ------HOl:.E CO.~PLETED 9/17/77
:::: ~::t::!..-::::i :;.-\ -::::::?. :::::.:ct::::::::u::i
BORINGS
Pl ATF A-7
... w w IL
:.:
:r .... "-w 0
... w w IL
:.:
:r .... "-w a
.... w w IL
:.:
~ "-"' 0
BORING NO. 16
0
6.l\-104
10
15
EL. 5597.5 FT.
9C/
REO-BROAN FIN£ SANO ANO SILT,
!<£0 IUl1 0£NS£
GRADING CALCAREOUS WITH CAL-
CITE STRINGERS
CAAOO:S DENS£
PALE CR£EN TO WHITE, FINE TO
COARSE-GRAINED SA;<OSTONE, ALTER-
~A•I:IC W£LL-C£M£NTf:O ANO POORL¥-
C£;i£NT£0 BANDS
B£COH£S COilTINUOUSLY WELL-C£.'IENTEO
HOL£ COMPL£TEO 9/10/77
.W GROUND WATER £NCOUNTEREO 20------
BORING NO. 18
EL. 5608.5 FT.
o -_,,,._fl~,,_ SMML/...,,.-----l RED-BROWN FIN£ SANO ANO SILT, 11COIUM 0£NSE
9 )/ GRADING CALCAREOUS WITH CAL-
• l l. CITE STRINGERS
10
15
20
25
86, -::::-:-::
"'111~ ---
50/ ------0 o· .... -_--_---......_ _ _,
OFF-WHITE, POORLY CEl1£NTEO,
WEATHEREO SANDSTONE WITH LAYERS OF WEATHERED CLAYSTONE
GRE£N SANDSTONE
GREEN, WEATHERED CLAYSTONE WITH
Ol<ANG~ IRON STAINING
Jo------HOLE COl1PL£TEO 9/17/77
0
10
NO GROUND WATER £NCOUNTERE0
BORING NO. 20
EL. 5570.4 FT.
RED-BROWN FINE SANO ANO SILT,
LOOSE TO MEDIUM OENSlo.
LICHT BROWN, FINE TO MEDIUM-CRAINEO SANDSTONE, GRADING WELL-CEM£.'ITEO
HOLE COHPL£TEO 9/17/77
NO GROvND WATER ENCOUNTERED
LOG OF
... w w ....
:.:
:r ...
BORING NO. 17
EL. 5582.0 FT.
5. 5\-105 • 76
SM/
ML RED-BROW,< FINE SANO ANO SILT
CRAOINC CALCAREOUS WITH CAL-
CITE STRINC£RS ANO INCLUSIONS
CRZE~. FINE TO ~IUM-CR..\IUEO
SANDSTONE, INIITALLY WEATHEREu,
GRADING WELL C£.'lEllTEO
::; 10 -----~"'''""~ LAYERED POORLY-CEM£NTEO ANO W£LL-C£.'lENTEO, POSSIBLY SOME CLAY-
STONE LAYERS
0
... ... w IL
:.:
15------
LAYERED WELL-CEMENTED ANO VERY WELL-CEMENTED
HOLE COMPLE"XEO 9/17/77
NO GROUND WAT~R £.XCOUNTEREO
BORING NO. 21
EL. 5584.5 FT.
o-----...,...,,...~,S--M_/...,...-RE-D---B-R-a.-:<N--F-I-N-E-S.\l-NO-A-N-0-S-IL-T-,~
ML LOOSE TO MEDIUH DENSE
•52 :-:-:: CLS
:;:';::,,:SOS
GREEN CLAY WITH SOME GYPSUl-1
CRYSTALS, (WEATHERED CLAYSTONE)
STIFF TO VERY STIFF
GREEN, FINE GRAINED, WEATH£RED
SANDSTONE
~ ISi:~~ :; 10 _____ _,
a
... .... .... ...
:.:
:r ... "-w a
BECOMt:S WELL-CEMEllTED
HOLE COHPL£T~O 9/17/77
15------NO GROUND WATER ENCOUNT£REO
BORING NO. 22
EL 5585.3 FT.
o-~~~-r..,.,.,...~S~M:-:-:/..--RE-0---B-ROWN--F-IN-E~SM-.-O-AN-0-S-IL-T-
73/
12. 5\-11a•101(
10
15
20
25------
ML G<Y\OING CALCAREOUS WITH CAL-
CITE STRINGERS
GP.ADES CLAYIER
LIGHT BROWN TO OFF-WHITE, SILTY
CLAY
c;u:zi:. FI~t: C::tftI;lEO, OJL\Tli:C:Rf:D . SANDSTONE WITH HIGH CLAY CONTEllT,
POORLY-CEMENTED
BECOMES WELL-CEMENTED
liO~E COl<PLETEO 9/17/77
NO GROUllO WATER ENCOUNTERED
BORINGS
DA ... ES C. ... OORE
PLATE A-8
.. "' ... ...
BORING NO. 19
EL. 5600.3 FT.
93/
i2. o-92 • u ·
•'SM/
10 f ----:<;J~lO.._."" I
15
20
25
30
7.0
35
l
I
95/
fJ 9"
85/
fJ 91,•
50/ .&~~-l;!
-~
J
. [. ' sos
.........
RED-aROWN FIN£ SAND ANO SILT. MEDIUM DENSE
GRAD!llG CALCAREOUS WTIH
CALCITE STRINGERS
GAAOES VERY CA'-CAREOUS ANO
VERY DENSE
BECOMES VERY LOOSE, POSSIBLY :.1ITH VOI.)S
BECOMES OEliSE
GREEN, FINE TO HEOIUH-GRAINEO
SANDSTONE, "f:ATHLREO, WITH SOME
ORA.'JGE A.'JO YELLOw IRON STAINI:IG
GRAY-GREEN, FINE TO MEDIUM CRAIN£0,
WEATHERED, CLAYEY SANDSTONE WITll
ORANGE ANO YELLOW IRON STAINWC
BECOMES LESS WEATHERED WITH LESS CLAY, PR£00MiliA.'<TLY CRAY WIT11 ORANGE IRON S1AININC, HOOERATELY CEMENTED, MEOlUM GRAINED
BROWN-YELLOli, COARSE-CRAINLD SANDSTONE
:!: 40
85
::·;·.:: CGL
::::;;:'i' sos
FINE GRAVEL CONGLOMERATE WITH CONSID-
ERABLE COARSE•CRAINED SANO ANO CAL-CARCOUS XI.TRIX
i= 0.. -~ ... Q
943
45
50
J.. --
78
55 n
--
60
65
70
_____ .......,lllil
80 ___ :01~
BROWN TO YELLOW, COARSE-GRAINED SAND-
STONE WITH CONSIDERABLE NEAR HORI•
ZONTAL FRACTURING A.'10 SOME ORANGE
IRON STAINING, KOOERATELY CEMENTED
WATER RETURN COMPLETELY LOST
LICHT GRAY, MEDIUM TO COARSE-GRAINED
SANDSTONE; HIGHLY FRACTURED ALONG
HORIZONTAL BEDDING, CONSIDERABLE
tIHONITE STAINING ALONG BEDDING FRACTURES; l«JOERATELY CEMENTED TO
UNCEHENTEO, CORE LOSSES ASSUMED
OU£ TO WASHING AWAY OF UNCEH£NTEO
ZONES
LIMITED WATER RETUl<N
BECOMES VERY UNCEMl:llTED, WATER
RETURN LOST
HOLE LOST AT 72 FTi HOLE l9A DRILLED 15 FT SOUTH OF HOLE 19: NO WATER RETURN OBTAINED; NO
Sll;{PLING POSSIBLE: HOLE LOCCEO
FRO~ ~RI!..!-!~IC PRCCRESS
VERY WELL-CEHENTEO SANDSTONE (72 FT)
MODERATELY-CEMENTEO SANDSTONE (73 FT)
LOG OF
130------
BORINGS
MODERATELY WELL-CEMENTED CONG<.OMERATE
OR FRACTURED SAtlDSTONE. GaAOING BETTER
CE.'IE!ITEO
GRADING LESS CE~E~ITEO
VERY POORLY-CE.'<ENTEO SANDSTONE
MOOERATELY-CE.'<ENTEO CLAYSTONE
POORLY-CEME.'<TEO SANDSTONE WITH
MINOR HARO LENSLS
HODERATELY-CEME~TED SANDSTONE
GRADES L!:SS CE.~ENTEO
APPEARS CLJ.YEY
HOOERATELY-CEME~TEO SANDSTONE
GROUND WATER LEVEL liO FT, ll/4/77
POORLY-CE:<CNTt:O SANDSTONE WITH
ocCASIOllAL BA.'<OS OF GRAVEL OR
CONGLOMERATI:
VERY WELL-CEME!ITEO SANDSTONE
VERY POORLY-CEMENTED SANDSTONE
VERY :<ELL-CE!<ENTEO SANDSTONE
BECOMES LESS CEMENTED ANO CLAYEY
HOLE COMPLETED 9/25/77
PLATE A-9
BORING NO. 23
EL. 5555 .9 FT.
RCO-Bk"OW~ FINE SAND AND SILT,
LOOSE TO MEDIUM OENSE
GRADING CALCAREOUS WITH CAL·
CITE STRINi.:tRS
GRAOE5 HEOIUH-CRA!~EO
M07TLED CO~RS FROM RED TO
;nil T£ ANO YELLOW
,_ YELLOW TO LIGHT BROWN. MEDIUM TO
IU COARSC:-GRAINED SANO (WEATHERED ~ SANilSTONEl i 10
___ _.c!:-l;:;:!=lr=!ll:ll~s;:;;o;:s~c~FF~::::~~::~~~: .c::IUN
a CSll609{. :1rnrn1 ~N~~~~:G~~· W~R~~~~~EO
... "' "' ....
~
j'.: ... "' a
15------
HOLE COMPLL"TEO 9/10/77
NO GROUND WATER £!<COUNTERED 20------
BORING NO. 24
EL. 5573.4 FT
o~~~~-..,.,.,,.~,~S~M~/,,,_~~~"--~~~~~~~-
REo-saOWN FINE SANO AND SILT. ML LOOSE TO HEOIUH DENSE
GRADING CALCAREOUS WITII CALCITE
STRWGERS
OFF-WHITE, FINE GRAINED, WEATHERED
SANDSTONE, GRADES WELL-CE.'IENTI:O
OFF-WHITE, FINE TO MEDIUM GRAINED,
MODERATELY WELL-CO!ENTED SANDSTONE
!.IGllT BRO:iN. FU:£ TO MEDIUM GRAINED.
"ELL-C£1iE::IT£;) SANDSTONE
llOLZ CO.~LETED 9/17/77 15------NO GROUND WATER EllCOUNTERED
10
BORING NO. 26
EL. 5578.3 FT.
RED-BROW?I FINE SAND AND SILT,
LOOSE TO MJ:DIUM DE.'<SE
GRADING CALCAREOUS WITII CALCITE
STRINGERS
OFF-WHITE, FINE TO HEOIUM-GRAINEO
SANDSTONE, WEATHERED, GRADING WELL-
CEMENTEO
VERY WELL CEMEUTEO
HOLE COHPLETED 9/17/77
NO GROUND WATER ENCOUNTERED
LOG OF
... IU "" ..
~
j': ... IU a
... IU
"' ..
~
j'.:
0.. IU a
10
10
BORING NO. 27
EL. 5555.0 FT.
il!:.0-SRO:-r.i FINE s;..~;o ANO SILT.
LOOSE: TO MEDIU:~ :it:;sE
GRADING C.\LCA!l.~OUS "!TH CALCITE
S7RillG£RS
ca.::r:;isH. FL'f .. ·:o :-!E:Hi;;.;-GMI~E:>
S~:OS70NZ • VC:RY WELL-CE.'IENTED
HO~! CO:il'LET=D 9/17/77
NO GROU!IO WATER £~COUNTERED
BORING NO. 29
EL. 5655.0 FT. CAPPROXJ
:~1 · SM/
ff •ML
RED-oROWN FWE SA1'D A~D SILT, :.:::.s:::
GAAOES HEDICM DE1'SE
h<H7E TO SLIGHTLY TA.'< SANDSTONE
3ECOM£S WELL-CE.'IC:ITED
HO~~ COMPLETCD 9/JJ/77
~O GROU~O WATER £:;COUNTERED
BORINGS
... "' "' IL
::!:
i= CL "' Cl
BORING NO. 28
EL. 5547.6 FT.
76/ "'11. 10
""15 15
f;i 50/
20 2\·
-~
25 I 94
0 81
T -~
30
0
JS I
I
I --
I lOO 40 I 80 I
-~
45
~1i
so-----t'~~~
:: ___ -+-~-:=-...1111
~ 6s------1~l\ll
70 ------ff ,~II!~
1;-~-----1@!:i·i~Y-
ao-..... •' ___ .... -~UJ r-
RED-BROWN FINE SA.NO A~O SILT.
HJ;QIUM DENSE
GRAD ING C:.LCARLOUS W I1"H
CALCI7'E S7RIWG.E.:RS
GRADES LIGHT BROWN AND VERY DENSE
Bi:COIU:S LOOSE
BECOMES Vl:RY DENSE
ORANGE TO YELLOW. MEDIUM TO cINE
o;RAINEO, SILTY SA!ID (WEATHERED
SANDSTONE)
LIGHT GREE:II!:H-GRAY. FHIE TO
MEDIUM-GRAINCD S;.t;DSTONE WITH
SOME GRAVEL TO PEBBLE-SIZED IN-
CLt;SIONS: SOilE !HKOR Lll«)NlTE
STAINING: FR.\CTURlS llO~IZONTAL
LIGHT GREEN, FI:IE-GRAINED s;.xc-·
STONE WITri LAYlRS or GREE:! CLAY-
STONE UP TO 4 INCHES THICK
MEDIUM TO LIGHT Br.o«N, MEDIUM TO
COARSE GRAIN~D. WLLL-CE~ENTED SAND-
STONE, IRON STAINING EVIDE:<T AT
CONTACT WITH OVERLYING n:n:a-
GRAINED SANDSTONE
CIRCULATION LOST
LICHT GRAY, MEDIUM TO COARSE-
GRAINED SANDSTONE WITH SC:CTIO.<S or
VERY POORLY-CEMENTED SANDSTONE
INTERLAYERED, poo1u.:i-cc::-u:::r£D A:<D
WELL-COU::NTED SANDSTO"E AND CO!l-
GLOMERATE
CA3ING INSTALLC:D TO 74 FT
GROUND WATER LEVEL 75.7 FT, ll/4/77
MATCH LINE
LOG OF
BO
a;
90
I 14.)
I
I
.l
•o.J
I
E1os -''-------11;:;,;;,;;1 ....
"" .L
j:: I
CL ~110 -'--+'-""'-cl'''''""
135------
BORINGS
MATCH LINE
GRAVEL AND PEBBLE CONGLO:-IERATE WITH
SA.NOY MATRIX IN PLACES CNCt.."'lENTEO
LIGHT GRAY TO OFF-WHITE, FINE TO
H£0IUM-CRAI!-Z£0 SANC3TONE. WELL
CE.'IOITED
GE:IERALLY LlGHT GRAY SANDSTONE WITH
OCCASIONAL 3ANOS OF aROli!I, CLAYIER
SA:lOSTONE
GRADES 0.\RKER GR.\Y
LI(;HT GRAY, WELL-CE.'U:.~TEO SA.~OSTONE
LIGHT GRAY, MEDIUM GRAINED, WELL-
C~NTED SAllDSTONE; FRACTURES
C£1l£RALLY NEAR HORIZONTAL
HOU: COMPLETED 9/21/77
DA ... ES e ... oone
PLATE A-11
... (/) (2) __®_ c~> _, .. l'M l'J /I IJ"I 17' ,If
S.AM~l I ;:z .3 4 -.8t..oc..A: TRIAXIAL COMPRESSION TESTS ct:~T" lrftTI .e"''"'°"' ,e ..... ,k ,e.,u,,
"· .. ;3.3 1~.2 /3·3 15·1
ON SILTY FINE SAND COMPACTED TO 95% ~ Y4• ~f ///, I ///, Z. ///,/ ///. 5
! .. o. nJ__ ''"SJ.7 "· ~Zd' o . .S,2.~
OF AASHTO T-99 MAXIMUM DRY DENSITY , s " 'J' 7-'J' x " .. y. c 7 ·1.. /•
"'• .. /8.2 ll·~ !<! .. 7 t<:. /
~ Tio "1:F /lfl·i 117.1 t•J.o_ IZO·~ . ...___
~ ., o . .:tel ~-
o.f:;o ",<lN o, f-O'! .. ,. ,, s .. "' /oO Y. /00 "-/00 J loo •1;
10 UCllC ""(SSJll\C ff'Sll ,f,f./ J2.). "' /jt.£
STIU,llrf JlllA.T[ • coo.r.s 3 ,00<>0'3 5 . ooo €'GO I IHCHts I MINUTI! I ,t:)Oc:J ?;:3 EFFECTIVE STRES<.
--TOTAL STRESS ' .: $ ~ $ 'f t( f -<( I•. ~ 1r111rss b' ,;, 15" 115" I) ,.,. ' COHOITIO"' '• .. ~ ~ . v .. a . . . . ~ ; !r . • .
I' .. 11.~9 5'.f;C 2o.oc /o .. ~·r: L!.lft.. ./.0:1. Zo,o, .-;·'IC u. ~~l~N.l 'it.o ?:-,; l'?-:Z.I JS-:. /2 ,, ~.,)....: ...!±!::L _f_?L Cl) = ;;:-t(;;--~ 7;;;· ·-:.:: if.·-=.oo '"~0 . ...!..:.!..'!l_ ~ !'·""
cti 6 ~ a1 •a1 ''Z·'1~ ..f..88 S·'-r 4.n ,_2.1.3.._ .: . .r? 11·'9 ·-.,,,,-; ,..i---.;..-.... '4.~8 9.~t 1.i7 Cl) ; a,,}(,, . J.88 11.12 /()·J.l. 19.~~ /f;. 3·•
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(MAXIMUM EFFECTIVE STRESS RATIO) TRIAXIAL COMPRESSION TEST REPORT
TYPE OF TEST ~0/ff.~#t 7;!,.{~.;,/t.::1£R:1,1Af 8.c~: J f"'; ~,.
TYPE MATERIAL CO,.,,l"ACT'~Q ~e
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CLASSJFICATION_.:5,_M..__/._M'-'--"L.'°------------
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PLATE B· 12
APPENDIXH
Material Quantities
...-...-----.... -...-.-------...-::-5 5 5:-":=~ Environmental
TITANEnvironmental
By TAM Date 7/5/96 Subject _,,E=FN....._,__-_W~h....,it=e....,M....,e""s""""a _________ Page_j__of_l:_
Chkd By~ Date o/tiff 1& Tailings Cover Material Volume Cale. Proj No 61I1-001
Purpose:
Method:
Assumptions:
To determine the volume of riprap, clay, and random fill materials required to
construct the uranium mill tailings cover at White Mesa Mill in Blanding, Utah.
Material volumes were calculated for two construction options:
• An integrated soil cover over Disposal Cells 2, 3, and 4A, and
• A cover over Cells 2 and 3, where Cell 4A tailings are excavated and placed in
Cell 3.
Standard geometric equations, as shown below, were used to determine the
required material volumes.
Volume of a rectangle
Volume of a trapezoid
= base * height * length
= 112 *height *(base1 +base 2)
Surface area calculations for the tops of Cells 2, 3, and 4A are shown in Figure 1,
and material volumes are calculated in Table 1.
The method for calculating material volumes on the side slopes is shown in Figure
2. The 5H: IV slopes have been divided into several zones which are indicated on
Figure I. The slopes have been categorized based on the average height they
attain over a certain length. The height of the cover above the ground surface,
along each side, was estimated using the cross sections in Figures 3 -5.
Calculations are presented in Table 2.
• Random fill will be used to fill the existing freeboard space between the
tailings and clay layer of the cover and bring the tailings pile elevations up to
the berm elevations. This will create a smooth surface with a slope matching
that of the cover. The random fill thickness between the clay and tailings
surface will be a minimum of three feet. This random fill volume was not
calculated due to the lack of information of the current topography in the
tailings piles.
• The 0.2 percent slope on the tailings piles will be created using random fill
materials beneath the clay layer of the cover. Cover materials will consist of
one foot of clay under two feet of random fill . The top, riprap layer will
consist of a minimum three inches on the top of the cover, and one foot on the
side slopes.
d: \proj ects\6111. 001 \volume. clc 9 /16/96
TITANEnvironmental
By TAM Date 715196 Subject ~E=FN-"-'--~W~h=i=te~M,_.,_e=s=a _________ Page 2--of_l__
Chkd Bykf;J Date 8/f'f/n Tailings Cover Material Volume Cale. Proj No 6111-001
Results:
Option 1: (Cover on Cells 2, 3, and 4A):
Total volume (Clay): =9,857,221 ft3
Total volume (Random fill): =19,918,351 ft3
Total volume (Riprap -top cover): =2,234,563 ft3
Total volume (Riprap -side slopes): =1,122,881 ft3
Option 2: (Cover on Cells 2 and 3):
Total volume (Clay): =7,816,884 ft3
Total volume (Random fill): =15,804,024 ft3
Total volume (Riprap -top cover): =l, 754,563 ft3
Total volume (Riprap -side slopes): =968,890 ft3
d: \projects\6111. 001 \volume. clc 9/16/96
=365,082 yd3
=737,717 yd3
=82,762 yd3
=41,588 yd3
=289,514 yd3
=585,334 yd3
=64,984 yd3
=35,885 yd3
TABLE 1
Volume of materials for top of cover:
Cell# surface area Th (riprap) Th (fill) Th (clay)
ft'2 inches feet feet
2 3237500 3 2 1
3 3780750 3 2 1
4A 1920000 3 2 1
Option 1 Total (Cells 2,3,and 4A):
Option 2 Total (Cells 2 and 3):
TABLE 2
Volume of materials for side slopes:
Slope# total h h (riprap) h (fill) h (clay) L' (riprap) L' (fill) L' (clay) Length
ft. ft. ft. ft. ft. ft. ft. ft.
1 16 15.5 14.0 12.5 79.0 71.4 63.7 3500
2 6 5.5 4.0 2.5 28.0 20.4 12.7 500
3 6 5.5 4.0 2.5 28.0 20.4 12.7 1180
4 20 19.5 18.0 16.5 99.4 91.8 84.1 1900
5 43 42.5 41.0 39.5 216.7 209.1 201.4 1750
6 10 9.5 8.0 6.5 48.4 40.8 33.1 950
7 5 4.5 3.0 1.5 22.9 15.3 7.6 1350
8 27 26.5 25.0 23.5 135.1 127.5 119.8 1200
9 35 34.5 33.0 31.5 175.9 168.3 160.6 1450
10 18 17.5 16.0 14.5 89.2 81.6 73.9 1300
n 1 Total (Slopes 1, 2, 3, 4, 6, 7, 8, 9, and 10):
n 2 Total (Slopes 1, 2, 3, 4, 5, 6, and 7):
TABLE 3
Total Material Volumes for the Cover
Option 1:
rlprap (top of cover) 2234563 ft' 82762 yd'
riprap (side slopes) 1122881 ft• 41588 yd0
random fill 19918351 ft' 737717 yd0
clay 9857221 ft0 365082 yd'
Option 2:
rlprap (top of cover) 1754563 ft' 64984 yd'
rlprap (side slopes) 968890 ft0 35885 yd0
random fill 15804024 ft0 585334 yd'
clay 7816884 ft 289514 yd0
Notes:
Riprap on top and sides of cover are of different dimensions, and are therefore caluculated separately.
Total h =the average height along the slope length.
Th = Thickness of the layer of material.
V = Total volume of the material
L' =Length of the layer down the side slope. Calculated as (h(material)) I (cos 78.7). The slope Is 5H:1V.
Length = Horizontal length of the side slope.
(1) Volume calculated as (surface area) x (layer thickness).
(2) Volume calculated as (L' x Th x Length).
d:lprojecis\6111 .001 \VOL_ CLC.XLSS/14/96
V (riprap)
ft.'3
809375
945188
480000
2234563
1754563
Th (rlprap) Th (fill} Th (clay) V(riprap)'
feet feet feet ft.'3
1 2 1 276622
1 2 1 14022
1 2 1 33093
1 2 1 188919
1 2 1 379240
1 2 1 46019
1 2 1 30977
1 2 1 162149
1 2 1 255078
1 2 1 116003
1122881
968890
V(fill)
ft.'3
6475000
7561500
3840000
17876500
14036500
V(fill)'
ft.•3
499704
20396
48135
348773
731709
77505
41302
305941
487976
212119
2041851
1767524
V(clay)
ft.'3
3237500
3780750
1920000
8938250
7018250
V(clayt
ft.•3
223082
6374
15042
159854
352470
31486
10326
143792
232898
96117
918971
798634
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By ~%A Date Subject _________ Sheet No -of L
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VERTICAL SCALE (FtCT)
RECLAMATION CovtR SURFACE
'/RANDOM f'lLL (2 F'T, l}{ICK)
;/; '/ ;;""oo" FILL AB wt T~ NOS (M NIMUM n. n ICK) I j~APPR XllMTE' AIUNO SURF'A ( ,.. ... , ....
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SECTION A-A' (WITH COVER ON CELLS 2. 3 & 4A)
E.'.ClAMATION C R SURFAC
'/RANDOM rl!.l (2 F'T. l}{ICK)
;), 'I II AN DOM ~LL AB VE TAii. NCS (M Nll.(UM n. T !Cl<)
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SECTION A-A' (WITH COVER ON CELLS 2 & 3)
A'
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+~' / 1-OCTAi I P or e RM .. MOVED
5540
5520 ~, r-11 "EL~ 1 T.&JUN S
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ATTACHMENT E.2
TECHNICAL SPECIFICATIONS FOR EXISTING COVER DESIGN
(from approved Reclamation Plan Revision 3.2b)
Denison Mines (USA) Corp.1050 17th Street, Suite 950
Denver, CO 80265
USA
Tel : [phone]
Fax : [phone]
www.denisonmines.com

Denison Mines (USA) Corp. 1050 17th Street, Suite 950 Tel : [phone]
www.denisonmines.com Denver, CO, USA 80265 Fax : [phone]

Attachment A
White Mesa Mill Reclamation Plan
Revision 3.2.B

Plans and Specifications

for

Reclamation

of the

White Mesa Mill and Tailings
Management System

January 2011

State of Utah11e.(2) Byproduct Material License # UT1900479

ATTACHMENT A
PLANS AND SPECIFICATIONS
FOR
RECLAMATION
OF
WHITE MESA FACILITIES
BLANDING, UTAH

PREPARED BY
DENISON MINES (USA) CORP.
INDEPENDENCE PLAZA
1050 17TH STREET, SUITE 950
DENVER, CO 80265

January 2011 Revision 3.2.B
Page A-i Revision 3.2.B
Denison Mines (USA) Corp.
White Mesa Mill Reclamation Plan

TABLE OF CONTENTS Page No.

1.0 GENERAL ...................................................................................................................... A-1
2.0 CELL 1 RECLAMATION ............................................................................................. A-1
2.1 Scope ................................................................................................................... A-1
2.2 Removal of Contaminated Materials .................................................................. A-1
2.2.1 Raffinate Crystals.................................................................................... A-1 2.2.2 Synthetic Liner ........................................................................................ A-2
2.2.3 Contaminated Soils ................................................................................. A-2

2.3 Cell 1 Tailings Area A-3 2.3.1 General .................................................................................................... A-3
2.3.2 Materials ................................................................................................. A-3
2.3.3 Borrow Sources ....................................................................................... A-3
2.4 Liner Construction .............................................................................................. A-3
2.4.1 General .................................................................................................... A-3
2.4.2 Placement and Compaction..................................................................... A-4
2.4.2.1 Methods....................................................................................... A-4
2.4.2.2 Moisture and Density Control ..................................................... A-5

2.5 Sedimentation Basin ........................................................................................... A-6
3.0 MILL DECOMMISSIONING ........................................................................................ A-8

3.1 Mill ...................................................................................................................... A-8
3.2 Mill Site ............................................................................................................ A-10 3.3 Windblown Contamination ............................................................................... A-10

Page A-ii Revision 3.2.B
Denison Mines (USA) Corp.
White Mesa Mill Reclamation Plan

TABLE OF CONTENTS (continued) Page No.
3.3.1 Guidance ............................................................................................... A-12
3.3.2 General Methodology ........................................................................... A-12
3.3.3 Scoping Survey ..................................................................................... A-13 3.3.4 Characterization and Remediation Control Surveys ............................. A-15 3.3.5 Final Survey .......................................................................................... A-16
3.3.6 Employee Health and Safety ................................................................. A-16
3.3.7 Environment Monitoring ...................................................................... A-17
3.3.8 Quality Assurance ................................................................................. A-17 4.0 PLACEMENT METHODS .......................................................................................... A-20

4.1 Scrap and Debris ............................................................................................... A-20
4.2 Contaminated Soils and Raffinate Crystals ...................................................... A-21 4.3 Compaction Requirements ................................................................................ A-21

5.0 RECLAMATION CAP - CELLS 1, 2, 3 , 4A, AND 4B .............................................. A-22
5.1 Earth Cover ....................................................................................................... A-22 5.2 Materials ........................................................................................................... A-22

5.2.1 Physical Properties ................................................................................ A-22
5.2.2 Borrow Sources ..................................................................................... A-29
5.3 Cover Construction ........................................................................................... A-29

5.3.1 General .................................................................................................. A-29
5.3.2 Placement and Compaction................................................................... A-30
5.3.2.1 Methods..................................................................................... A-30
5.3.2.2 Moisture and Density Control ................................................... A-31

5.4 Monitoring Cover Settlement ........................................................................... A-32

Page A-iii Revision 3.2.B
Denison Mines (USA) Corp.
White Mesa Mill Reclamation Plan

TABLE OF CONTENTS (continued) Page No.
5.4.1 Temporary Settlement Plates ................................................................ A-32

5.4.1.1 General ...................................................................................... A-32 5.4.1.2 Installation................................................................................. A-32 5.4.1.3 Monitoring Settlement Plates .................................................... A-33

6.0 ROCK PROTECTION.................................................................................................. A-35 6.1 General .............................................................................................................. A-35
6.2 Materials ........................................................................................................... A-36
6.3 Placement .......................................................................................................... A-37
7.0 QUALITY CONTROL/QUALITY ASSURANCE ..................................................... A-37

7.1 Quality Plan ...................................................................................................... A-37
7.2 Implementation ................................................................................................. A-38 7.3 Quality Control Procedures ............................................................................... A-38 7.4 Frequency of Quality Control Tests .................................................................. A-38
Page A-1 Revision 3.2.B
Denison Mines (USA) Corp.
White Mesa Mill Reclamation Plan

1.0 GENERAL

The specifications presented in this section cover the reclamation of the Mill facilities.

2.0 CELL 1 RECLAMATION

2.1 Scope

The reclamation of Cell 1 (previously referred to as Cell 1-I) consists of evaporating the cell to
dryness, removing raffinate crystals, synthetic liner and any contaminated soils, and constructing
a clay lined area adjacent to and parallel with the existing Cell 1 dike for permanent disposal of
contaminated material and debris from the Mill site decommissioning, referred to as the Cell 1
Tailings Area. A sedimentation basin will then be constructed and a drainage channel provided.

2.2 Removal of Contaminated Materials

2.2.1 Raffinate Crystals

Raffinate crystals will be removed from Cell 1 and transported to the tailings cells. It is
anticipated that the crystals will have a consistency similar to a granular material when brought
to the cells, with large crystal masses being broken down for transport. Placement of the crystals
will be performed as a granular fill, with care being taken to avoid nesting of large sized
material. Voids around large material will be filled with finer material or the crystal mass
broken down by the placing equipment. Actual placement procedures will be evaluated by the
QC officer during construction as crystal materials are brought and placed in the cells.
Page A-2 Revision 3.2.B
Denison Mines (USA) Corp.
White Mesa Mill Reclamation Plan

2.2.2 Synthetic Liner

The PVC liner will be cut up, folded (when necessary), removed from Cell 1, and transported to
the tailings cells. The liner material will be spread as flat as practical over the designated area.
After placement, the liner will be covered as soon as possible with at least one foot of soil,
crystals or other materials for protection against wind, as approved by the QC officer.

2.2.3 Contaminated Soils

The extent of contamination of the Mill site will be determined by a scintillometer survey. If
necessary, a correlation between scintillometer readings and U-nat/Radium-226 concentrations
will be developed. Scintillometer readings can then be used to define cleanup areas and to
monitor the cleanup. Soil sampling will be conducted to confirm that the cleanup results in a
concentration of Radium-226 averaged over any area of 100 square meters that does not exceed
the background level by more than:

- 5 pCi/g averaged over the first 15 cm of soils below the surface, and
- 15 pCi/g averaged over a 15 cm thick layer of soils more than 15 cm below the surface

Where surveys indicate the above criteria have not been achieved, the soil will be removed to
meet the criteria. Soil removed from Cell 1 will be excavated and transported to the tailings
cells. Placement and compaction will be in accordance with Section 4.0 of these Plans and
Specifications.

Page A-3 Revision 3.2.B
Denison Mines (USA) Corp.
White Mesa Mill Reclamation Plan

2.3 Cell 1 Tailings Area

2.3.1 General
A clay lined area will be constructed adjacent to and parallel with the existing Cell 1 dike for
permanent disposal of contaminated material and debris from the Mill site decommissioning (the
Cell 1 Tailings Area). The area will be lined with 12 inches of clay prior to placement of
contaminated materials and installation of the final reclamation cap.

2.3.2 Materials
Clays will have at least 40 percent passing the No. 200 sieve. The minimum liquid limit of these
soils will be 25 and the plasticity index will be 15 or greater. These soils will classify as CL, SC
or CH materials under the Unified Soil Classification System.

2.3.3 Borrow Sources
Clay will be obtaned from suitable materials stockpiled on site during cell construction or will be
imported from borrow areas located in Section 16, T38S, R22E, SLM.

2.4 Liner Construction

2.4.1 General

Placement of clay liner materials will be based on a schedule determined by the availability of
contaminated materials removed from the Mill decommissioning area in order to maintain
optimum moisture content of the clay liner prior to placing of contaminated materials

2.4.2 Placement and Compaction
Page A-4 Revision 3.2.B
Denison Mines (USA) Corp.
White Mesa Mill Reclamation Plan

2.4.2.1 Methods

Placement of fill will be monitored by a qualified individual with the authority to stop work and
reject material being placed. The full 12 inches of the clay liner fill will be compacted to 95%
maximum dry density per ASTM D 698.

In all layers of the clay liner will be such that the liner will, as far as practicable, be free of
lenses, pockets, streaks or layers of material differing substantially in texture, gradation or
moisture content from the surrounding material. Oversized material will be controlled through
selective excavation of stockpiled material, observation of placement by a qualified individual
with authority to stop work and reject material being placed and by culling oversized material
from the fill.

If the moisture content of any layer of clay liner is outside of the Allowable Placement Moisture
Content specified in Table A-5.3.2.1-1, it will be moistened and/or reworked with a harrow,
scarifier, or other suitable equipment to a sufficient depth to provide relatively uniform moisture
content and a satisfactory bonding surface before the next succeeding layer of clay material is
placed. If the compacted surface of any layer of clay liner material is too wet, due to
precipitation, for proper compaction of the earthfill material to be placed thereon, it will be
reworked with harrow, scarifier or other suitable equipment to reduce the moisture content to the
required level shown in Table A-5.3.2.1-1. It will then be recompacted to the earthfill
requirements.

No clay material will be placed when either the materials, or the underlying material, is frozen or
when ambient temperatures do not permit the placement or compaction of the materials to the
specified density, without developing frost lenses in the fill.
Page A-5 Revision 3.2.B
Denison Mines (USA) Corp.
White Mesa Mill Reclamation Plan

2.4.2.2 Moisture and Density Control

As far as practicable, the materials will be brought to the proper moisture content before
placement, or moisture will be added to the material by sprinkling on the fill. Each layer of the
fill will be conditioned so that the moisture content is uniform throughout the layer prior to and
during compaction. The moisture content of the compacted liner material will be within the
limits of standard optimum moisture content as shown in Table A-5.3.2.1-1. Material that is too
dry or too wet to permit bonding of layers during compaction will be rejected and will be
reworked until the moisture content is within the specified limits. Reworking may include
removal, re-harrowing, reconditioning, rerolling, or combinations of these procedures.

Density control of compacted clay will be such that the compacted material represented by
samples having a dry density less than the values shown in Table A-5.3.2.1-1 will be rejected.
Such rejected material will be reworked as necessary and rerolled until a dry density equal to or
greater than the percent of its standard Proctor maximum density shown in Table A-5.3.2.1-1.

To determine that the moisture content and dry density requirements of the compacted liner
material are being met, field and laboratory tests will be made at specified intervals taken from
the compacted fills as specified in Section 7.4, "Frequency of Quality Control Tests."

2.5 Sedimentation Basin

Cell 1 will then be breached and constructed as a sedimentation basin. All runoff from the Mill
area and immediately north of the cell will be routed into the sedimentation basin and will
discharge onto the natural ground via the channel located at the southwest corner of the basin.
The channel is designed to accommodate the PMF flood.
Page A-6 Revision 3.2.B
Denison Mines (USA) Corp.
White Mesa Mill Reclamation Plan

A sedimentation basin will be constructed in Cell 1 as shown in Figure A-2.2.4-1. Grading will
be performed to promote drainage and proper functioning of the basin. The drainage channel out
of the sedimentation basin will be constructed to the lines and grades as shown.
7___
a$i-I/i
tJ\
_1 T/2
ac--/
___l\\
If ft
I/_.3/-
L-E1_I--_j_c
-----T_-
---JHH-J--
--___7___I
/1
MILL YARD
tOP$L
/1 -11
--C
r-t
-r
--S
CELL EVAPORATION
AREA OF CELL
TO BE BREACHED
I__I
7k
3/
6t tsj
--1-
//0
a/3Ij
-4-
/4.//\
////
t/\I
1/
AL
1\
Ia
E73i---
ar /----sn
__/
n--
1/._
-r
I-i
--.N
7_---
I__I_
5--
--k---
r2-
--cShJ
NN4t
tIThI
\I N\
\\
bLi
REVISIONS
Date By Sedimentation Basin Detail
Figure A2.2.4---1
SCALE IN FEET
Scale1 200 Date Jon 1999 Celtirec
Author Drafted Sledd
Page A-8 Revision 3.2.B
Denison Mines (USA) Corp.
White Mesa Mill Reclamation Plan

3.0 MILL DECOMMISSIONING

The following subsections detail decommissioning plans for the Mill buildings and equipment;
the Mill site; and windblown contamination.

3.1 Mill

The uranium and vanadium processing areas of the Mill, including all equipment, structures and
support facilities, will be decommissioned and disposed of in tailings or buried on site as
appropriate. All equipment, including tankage and piping, agitation equipment, process control
instrumentation and switchgear, and contaminated structures will be cut up, removed and buried
in tailings prior to final cover placement. Concrete structures and foundations will be
demolished and removed or covered with soil as appropriate. These decommissioned areas
would include, but not be limited to the following:

· Coarse ore bin and associated equipment, conveyors and structures.
· Grind circuit including semi-autogeneous grind (SAG) Mill, screens, pumps and
cyclones.
· The three preleach tanks to the east of the Mill building, including all tankage,
agitation equipment, pumps and piping.
· The seven leach tanks inside the main Mill building, including all agitation
equipment, pumps and piping.
· The counter-current decantation (CCD) circuit including all thickeners and
equipment, pumps and piping.
· Uranium precipitation circuit, including all thickeners, pumps and piping.
Page A-9 Revision 3.2.B
Denison Mines (USA) Corp.
White Mesa Mill Reclamation Plan

· The two yellow cake dryers and all mechanical and electrical support equipment,
including uranium packaging equipment.
· The clarifiers to the west of the Mill building including the preleach thickener
(PLT) and claricone.
· The boiler and all ancillary equipment and buildings.
· The entire vanadium precipitation, drying and fusion circuit.
· All external tankage not included in the previous list including reagent tanks for
the storage of acid, ammonia, kerosene, water, dry chemicals, etc. and the
vanadium oxidation circuit.
· The uranium and vanadium solvent extraction (SX) circuit including all SX and
reagent tankage, mixers and settlers, pumps and piping.
· The SX building.
· The Mill building.
· The Alternate Feed processing circuit
· Decontamination pads
· The office building.
· The shop and warehouse building.
· The sample plant building.
· The Reagent storage building.

The sequence of demolition would proceed so as to allow the maximum use of support areas of
the facility such as the office and shop areas. It is anticipated that all major structures and large
equipment will be demolished with the use of hydraulic shears. These will speed the process,
provide proper sizing of the materials to be placed in tailings, and reduce exposure to radiation
and other safety hazards during the demolition. Any uncontaminated or decontaminated
equipment to be considered for salvage will be released in accordance with the terms of License
Page A-10 Revision 3.2.B
Denison Mines (USA) Corp.
White Mesa Mill Reclamation Plan

Condition 9.10. As with the equipment for disposal, any contaminated soils from the Mill area
will be disposed of in the tailings facilities in accordance with Section 4.0 of the Specifications.

3.2 Mill Site

Contaminated areas on the Mill site will be primarily superficial and include the ore storage area
and surface contamination of some roads. All ore and alternate feed materials will have been
previously removed from the ore stockpile area. All contaminated materials will be excavated
and be disposed in one of the tailings cells in accordance with Section 4.0 of these Plans and
Specifications. The depth of excavation will vary depending on the extent of contamination and
will be based on the criteria in Section 2.2.3 of these Plans and Specifications. All other 11e.(2)
byproduct materials will be disposed of in the tailings cells.

All ancillary contaminated materials including pipelines will be removed and will be disposed of
by disposal in the tailing cells in accordance with Section 4.0 of these Plans and Specifications.

Disturbed areas will be covered, graded and vegetated as required. The proposed grading plan
for the Mill site and ancillary areas is shown on Figure A-3.2-1.

3.3 Windblown Contamination

Windblown contamination is defined as Mill derived contaminants dispersed by the wind to
surrounding areas. The potential areas affected by windblown contamination will be surveyed
using scintillometers taking into account historical operational data from the Semi-annual
Effluent Reports and other guidance such as prevailing wind direction and historical background
data. Areas covered by the existing Mill facilities and ore storage pad, the tailings cells and
Page A-11 Revision 3.2.B
Denison Mines (USA) Corp.
White Mesa Mill Reclamation Plan

adjacent stockpiles of random fill, clay and topsoil, will be excluded from the survey. Materials
from these areas will be removed in conjunction with final reclamation and decommissioning of
the Mill and tailings cells.
t-'"'!"-t-D-AT_E....,.....s_Y...,._ ___ R_Ev_1s_1o_Ns ___ ___. .International Uranilllll (USA) Corporation
ft & 11/111/ea RAH Ch8.Jlce title block to roe White Mesa Mill
DESIGN:
CHKD BY:
APP:
FIGURE A-3.2-1
Mill Site and Ore Pad
Final Grading Plan
ORA WN: R. Van Horn SHEE T
DATE: Fe'f>, 1997
of
SCALE: 1" = 200'
Page A-13 Revision 3.2.B
Denison Mines (USA) Corp.
White Mesa Mill Reclamation Plan

3.3.1 Guidance

The necessity for remedial actions will be based upon an evaluation prepared by Denison, and
approved by the Executive Secretary, of the potential health hazard presented by any windblown
materials identified. The assessment will be based upon analysis of all pertinent radiometric and
past land use information and will consider the feasibility, cost-effectiveness, and environmental
impact of the proposed remedial activities and final land use. All methods utilized will be
consistent with the guidance contained in NUREG-5849: "Manual for Conducting Radiological
Surveys in Support of License Termination."

3.3.2 General Methodology

The facility currently monitors soils for the presence of Ra-226, Th-230 and natural uranium,
such results being presented in the second semi-annual effluent report for each year. Guideline
values for these materials will be determined and will form the basis for the cleanup of the Mill
site and surrounding areas. For purposes of determining possible windblown contamination,
areas used for processing of uranium ores as well as the tailings and evaporative facilities will be
excluded from the initial scoping survey, due to their proximity to the uranium recovery
operations. Those areas include:
· The Mill building, including CCD, Pre-Leach Thickener area, uranium drying and
packaging, clarifying, and preleach.
· The SX building, including reagent storage immediately to the east of the SX
building.
· The alternate feed circuit.
· The ore pad and ore feed areas.
· Tailings Cells No. 2, 3, 4A, and 4B.
· Evaporation Cell No. 1.
Page A-14 Revision 3.2.B
Denison Mines (USA) Corp.
White Mesa Mill Reclamation Plan

The remaining areas of the Mill will be divided up into two areas for purposes of windblown
determinations:

· The restricted area, less the above areas; and,
· A halo around the restricted area.

Areas within the restricted area, as shown on Figure 3.2-1 will be initially surveyed on a 30 x 30
meter grid as described below in Section 3.3.3. The halo around the suspected area of
contamination will also be initially surveyed on a 50 x 50 meter grid using methodologies
described below in Section 3.3.3. Any areas which are found to have elevated activity levels will
be further evaluated as described in Sections 3.3.4 and 3.3.5. Initial surveys of the areas
surrounding the Mill and tailings area have indicated potential windblown contamination only to
the north and east of the Mill ore storage area, and to the southwest of Cell 3, as indicated on
Figure 3.2-1.

3.3.3 Scoping Survey

Areas contaminated through process activities or windblown contamination from the tailings
areas will be remediated to meet applicable cleanup criteria for Ra-226, Th-230 and natural
uranium. Contaminated areas will be remediated such that the residual radionuclides remaining
on the site, that are distinguishable from background, will not result in a dose that is greater than
that which would result from the radium soil standard (5 pCi/gram above background).

Soil cleanup verification will be accomplished by use of several calibrated beta/gamma
instruments. Multiple instruments will be maintained and calibrated to ensure availability during
Remediation efforts.

Page A-15 Revision 3.2.B
Denison Mines (USA) Corp.
White Mesa Mill Reclamation Plan

Initial soil samples will be chemically analyzed to determine on-site correlation between the
gamma readings and the concentration of radium, thorium and uranium, in the samples. Samples
will be taken from areas known to be contaminated with only processed uranium materials (i.e.
tailings sand and windblown contamination) and areas in which it is suspected that unprocessed
uranium materials (i.e. ore pad and windblown areas downwind of the ore pad) are present. The
actual number of samples used will depend on the correlation of the results between gamma
readings and the Ra-226 concentration. A minimum of 35 samples of windblown tailings
material, and 15 samples of unprocessed ore materials is proposed. Adequate samples will be
taken to ensure that graphs can be developed to adequately project the linear regression lines and
the calculated upper and lower 95 percent confidence levels for each of the instruments. The 95
percent confidence limit will be used for the guideline value for correlation between gamma
readings and radium concentration. Because the unprocessed materials are expected to have
proportionally higher values of uranium in relation to the radium and thorium content, the
correlation to the beta/gamma readings are expected to be different than readings from areas
known to be contaminated with only processed materials. Areas expected to have contamination
from both processed and unprocessed materials will be evaluated on the more conservative
correlation, or will be cleaned to the radium standard which should ensure that the uranium is
removed.

Page A-16 Revision 3.2.B
Denison Mines (USA) Corp.
White Mesa Mill Reclamation Plan

Radium concentration in the samples should range from 25% of the guideline value (5 pCi/gram
above background) for the area of interest, through the anticipated upper range of radium
contamination. Background radium concentrations have been gathered over a 16 year period at
sample station BHV-3 located upwind and 5 miles west of the Mill. The radium background
concentration from this sampling is 0.93 pCi/gram. This value will be used as an interim value
for the background concentration. Prior to initiating cleanup of windblown contamination, a
systematic soil sampling program will be conducted in an area within 3 miles of the site, in
geologically similar areas with soil types and soil chemistry similar to the areas to be cleaned, to
determine the average background radium concentration, or concentrations, to be ultimately used
for the cleanup.

An initial scoping survey for windblown contamination will be conducted based on analysis of
all pertinent radiometric and past land use information. The survey will be conducted using
calibrated beta/gamma instruments on a 30 meter by 30 meter grid. Additional surveys will be
conducted in a halo, or buffer zone, around the projected impact area. The survey in the buffer
area will be conducted on a 50 meter by 50 meter grid. Grids where no readings exceed 75% of
the guideline value (5 pCi/gram above background) will be classified as unaffected, and will not
require remediation.

The survey will be conducted by walking a path within the grid as shown in Figure A-3.3-1.
These paths will be designed so that a minimum of 10% of the area within the grid sidelines will
be scanned, using an average coverage area for the instrument of one (1) meter wide. The
instrument will be swung from side to side at an elevation of six (6) inches above ground level,
with the rate of coverage maintained within the recommended duration specified by the specific
instrument manufacturer. In no case will the scanning rate be greater than the rate of 0.5 meters
per second (m/sec) specified in NUREG/CR-5849 (NRC, 1992).
Page A-17 Revision 3.2.B
Denison Mines (USA) Corp.
White Mesa Mill Reclamation Plan

3.3.4 Characterization and Remediation Control Surveys

After the entire subarea has been classified as affected or unaffected, the affected areas will be
further scanned to identify areas of elevated activity requiring cleanup. Such areas will be
flagged and sufficient soils removed to, at a minimum, meet activity criteria. Following such
remediation, the area will be scanned again to ensure compliance with activity criteria. A
calibrated beta/gamma instrument capable of detecting activity levels of less than or equal to 25
percent of the guideline values will be used to scan all the areas of interest.

3.3.5 Final Survey

After removal of contamination, final surveys will be taken over remediated areas. Final surveys
will be calculated and documented within specific 10 meter by 10 meter grids with sample point
locations as shown in Figure A-3.3.2. Soil samples from 10% of the surveyed grids will be
chemically analyzed to confirm the initial correlation factors utilized and confirm the success of
cleanup effort for radium, thorium and uranium. Ten (10) percent of the samples chemically
analyzed will be split, with a duplicate sent to an off site laboratory. Spikes and blanks, equal in
number to 10 percent of the samples that are chemically analyzed, will be processed with the
samples.

3.3.6 Employee Health and Safety

Programs currently in place for monitoring of exposures to employees will remain in effect
throughout the time period during which tailings cell reclamation, Mill decommissioning and
clean up of windblown contamination are conducted. This will include personal monitoring
(film badges/TLD’s) and the ongoing bioassay program. Access control will be maintained at
the Restricted Area boundary to ensure employees and equipment are released from the site in
Page A-18 Revision 3.2.B
Denison Mines (USA) Corp.
White Mesa Mill Reclamation Plan

accordance with the current License conditions. In general, no changes to the existing programs
are expected and reclamation activities are not expected to increase exposure potential beyond
the current levels.

3.3.7 Environment Monitoring

Existing environmental monitoring programs will continue during the time period in which
reclamation and decommissioning is conducted. This includes monitoring of surface and
groundwater, airborne particulates, radon, soils and vegetation, according to the existing License
conditions. In general, no changes to the existing programs are expected and reclamation
activities are not expected to increase exposure potential beyond the current levels.

3.3.8 Quality Assurance

At least six (6) months prior to beginning of decommission activities, a detailed Quality
Assurance Plan will be submitted for Executive Secretary approval. The Plan will be in
accordance with NRC Regulatory Guide 4.15, Quality Assurance for Radiological Monitoring
Programs. In general, the Plan will detail Denison’s organizational structure and responsibilities,
qualifications of personnel, operating procedures and instructions, record keeping and document
control, and quality control in the sampling procedure and outside laboratory. The Plan will
adopt the existing quality assurance/quality control procedures utilized in compliance with the
existing License.

55
30 meters
30 meters
55 SCANNING PATH
S4
FIGURE A-S3-I
TYPICAL SCANNINS PATH
SCOPIN SURVEY
IC METERS
LOCATION OF SYSTEMATIC SOIL SAMPLING
FISURE A-33--2
STANCAW SAMPLIN PATTERN FOR
StSTEMATC SUR\/Et OF SOIL
IC METERS
Page A-21 Revision 3.2.B
Denison Mines (USA) Corp.
White Mesa Mill Reclamation Plan

4.0 PLACEMENT METHODS

4.1 Scrap and Debris

The scrap and debris will have a maximum dimension of 20 feet and a maximum volume of 30
cubic feet. Scrap exceeding these limits will be reduced to within the acceptable limits by
breaking, cutting or other approved methods. Empty drums, tanks or other objects having a
hollow volume greater than five cubic feet will be reduced in volume by at least 70 percent. If
volume reduction is not feasible, openings will be made in the object to allow soils, tailings
and/or other approved materials to enter the object at the time of covering on the tailings cells.
The scrap, after having been reduced in dimension and volume, if required, will be placed on the
tailings cells as directed by the QC officer.

Any scrap placed will be spread across the top of the tailings cells to avoid nesting and to reduce
the volume of voids present in the disposed mass. Stockpiled soils, contaminated soils, tailings
and/or other approved materials will be placed over and into the scrap in sufficient amount to fill
the voids between the large pieces and the volume within the hollow pieces to form a coherent
mass. It is recognized that some voids will remain because of the scrap volume reduction
specified, and because of practical limitations of these procedures. Reasonable effort will be
made to fill the voids. The approval of the Site Manager or a designated representative will be
required for the use of materials other than stockpiled soils, contaminated soils or tailings for the
purpose of filling voids.

Page A-22 Revision 3.2.B
Denison Mines (USA) Corp.
White Mesa Mill Reclamation Plan

4.2 Contaminated Soils and Raffinate Crystals

The various materials will not be concentrated in thick deposits on top of the tailings, but will be
spread over the working surface as much as possible to provide relatively uniform settlement and
consolidation characteristics of the cleanup materials.

4.3 Compaction Requirements

The scrap, contaminated soils and other materials for the first lift will be placed over the existing
tailings surface to a depth of up to four feet thick in a bridging lift to allow access for placing and
compacting equipment. The first lift will be compacted by the tracking of heavy equipment,
such as a Caterpillar D6 Dozer (or equivalent), at least four times prior to the placement of a
subsequent lift. Subsequent layers will not exceed two feet and will be compacted to the same
requirements.
During construction, the compaction requirements for the crystals will be reevaluated based on
field conditions and modified by the Site Manager or a designated representative, with the
agreement of the Executive Secretary.

The contaminated soils and other cleanup materials after the bridging lift will be compacted to at
least 80 percent of standard Proctor maximum density (ASTM D-698).

Page A-23 Revision 3.2.B
Denison Mines (USA) Corp.
White Mesa Mill Reclamation Plan

5.0 RECLAMATION CAP - CELLS 1, 2, 3, 4A AND 4B

5.1 Earth Cover

A multi-layered earthen cover will be placed over tailings Cells 2, 3, 4A and 4B and a portion of
Cell 1 used for disposal of contaminated materials (the Cell1 Tailings Area). The general
grading plan is shown on Drawing A-5.1-1. Reclamation cover cross-sections are shown on
Drawings A-5.1-2 and A-5.1-3.

5.2 Materials

5.2.1 Physical Properties

The physical properties of materials for use as cover soils will meet the following:

Random Fill (Platform Fill and Frost Barrier)
These materials will be mixtures of clayey sands and silts with random amounts of gravel and
rock size material. In the initial bridging lift of the platform fill, rock sizes of up to 2/3 of the
thickness of the lift will be allowed. On all other random fill lifts, rock sizes will be limited to
2/3 of the lift thickness, with at least 30 percent of the material finer than 40 sieve. For that
portion passing the No. 40 sieve, these soils will classify as CL, SC, MC or SM materials under
the Unified Soil Classification System. Oversized material will be controlled through selective
excavation at the stockpiles and through the utilization of a grader, bulldozer or backhoe to cull
oversize from the fill.

Page A-24 Revision 3.2.B
Denison Mines (USA) Corp.
White Mesa Mill Reclamation Plan

Clay Layer Materials
Clays will have at least 40 percent passing the No. 200 sieve. The minimum liquid limit of these
soils will be 25 and the plasticity index will be 15 or greater. These soils will classify as CL, SC
or CH materials under the Unified Soil Classification System.
z c
0 0 :g
E
0 0 ~,
I
1
~ 0 E 0 ~
• n
+5
+5636.1
+5640.9
+559"" . .----559 • r=""--~--
+5568.6
LEGEND
+5562.6 EXISTIN SPOT ELEVATION
_5612 ELEVtj ON OF TOP OF COVE
ELEVATION OF TOP OF COVER
-5560-EXISTING GROUND CONTOUR
NOTES
1. THE COVER WILL MEET THE GROUND WITH A DOWNWARD . 11 E LO
2.
OF THE COVER.
3 A PORTION OF CELL 1-1 WILL BE USED FOR PERMENA R GE
. CONTAMINATED MATERIALS UPON FINAL SITE DECOMMISS 0 (N ,.
TOPOGRAPHY BY KLH ENGINEERING FROM AERIAL PHOTOGRAPHY DATED 4 · AUGUST 23, 1993. CONTOUR INTERVAL IS 2 FT.
+5601.7
5. SEE FIGURES A-5.1-2 AND A-5.1-3 FOR CROSS SECTIONS AND DETAILS.
6. EXISTING GROUND SURFACES SHALL BE REGRADED TO CONSTRUCT THE COVER
WITH A FINAL SURFACE THAT IS CONSISTENT WITH THE RECLAMATION COVER
GRADING PLAN.
SCALE
I WW -200 0 200 400 FEET
POINT
+
5614.5
5611
5610
5609 +
CELL 48
56oa
5607
0 0 0
(X)
" ~ w. 5611.94
Lw 1 EVAPORATION)
t ~~ ON --' . VlO
PROJEClED APPROXIMAlE ATCH POINT
SEE NOlE 1)
+
5612.9 ..... ~ ~ 5612.5
=--::::::,,.._ -
CELL 3
.,
It
I
SH: IV /
It
I
I
t'
It
I
I
5613.2 =--
+
+
- - ---·---- -
CELL 2
17
5614
5613.5
5608
5607
+5576.3
3.6 5576.2 +
5612.6
~-
0 0 0 "' " "' (\j
w
+
+
56 .2
II
5573.3_~ ------fl! 557 . ,,
IB I
rf0
+5566.5
REV. DATE BY No.
& 1/18/98 RAH
2 4/5/99 RAH
3 6/30/00 DLS • 3/25/08 dmf
5 2/10/10 DLS
6 6/16/10 dmf
7 1/13/11 bm
x x
5590.6+
5578.8 +
REVISIONS
Add rock apron at toe of 11lop1111, incnia1111 width of
bregch in C<lll 4A diko &; chi;mg" to IUC title block
Add section lines through the breach in Cell 4A dike
&: change to IUC title block
Add Cell 1-1 Disposal Area
Add Cell 4A Reclamation Cop
Add detail reference
Add Cell 4B Reclamation Cop
Revision U?date
• ~562
20000
• I
+559 ••
j
55~ I
+ L.-\--l;ll-·-·--5586.4 5598.4 +
After Titan Environmental, 1996
Denison Mines (USA) Corp. IOENISONI)~~
I MINES
Pmjecto WHITE MESA MILL
County: San Juan e: Utah
FIGURE A-5.1-1
RECLAMATION COVER GRADING PLAN
RECLAMATION PLAN REV. 3.2.B
z c
c ~
E ~ ~
,J
I
ri ~ • ,
I!
,;;
N
~
c 0 ~ u ~ c
0 ~
c :8 0 E 0
! ~ ~
§j
--;;:
5 ~
A
5640
~ _J
U1
~ 5620
t;J DETAIL2 w 5600 LL
z 5580 0
';;: > 5560 w
_J w
5540
0
TAILINGS
CELL 4A
SEE FIGURE A-5.1-4 FOR TOE APRON DETAIL
I I I
0 0 0
0 0 0
N ... "'
~----RIPRAP (SEE NOTE 1)
~--FROST BARRIER FILL
COMPACTED CLAY
3" MINIMUM
1'-0"
I
0
0 ro
PLATFORM FILL ABOVE TAILINGS
DETAIL 1: COVER DETAIL FOR POND SURFACE AREAS
(NOT TO SCALE)
NOTES:
1. RIPRAP PLACED ON THE TOP OF COVER WILL CONSIST OF ROCK WITH D50
MINIMUM OF 0.34 INCHES .
0
0
0
2. RIPRAP PLACED ON THE SIDE SLOPES OF COVER WILL CONSIST OF ROCK WITH
D50 MINIMUM OF 3.5 INCHES.
3. RIPRAP FILTER PLACED ON THE SIDE SLOPES OF COVER WILL CONSISTS OF
MEDIUM SAND
4. POND BOTTOM ELEVATIONS INFERRED FROM 'CELL 4 PHASE A AND PHASE B
PLAN', WESTERN ENGINEERS INC., (JANUARY 17, 1989).
5. SEE FIGURES 1AND2 FOR CROSS SECTION LOCATIONS.
6. EXISTING GROUND SURFACES SHALL BE REGRADED TO CONSTRUCT THE
COVER WITH A FINAL SURFACE THAT IS CONSISTENT WITH THE RECLAMATION
COVER GRADING PLAN.
FROST BARRIER FILL (2 FT. THICK)
COMPACTED CLAY (1 FT. THICK)
PLATFORM FILL ABOVE TAILINGS (MINIMUM 3 FT. THICK)
APPROXIMATE TAILINGS SURFACE
3 3 \11 3 1 l:I EXISTING ffi 11/ CELL 3 CELL2
BERM
APPROXIMATE APPROXIMATE BOTTOM OF CELL BOTTOM OF CELL
0 0 0 0 0 0 0
0 0 0 0 0 0 0
N ... "' ro 0 N ... N N N
SECTION A-A' (WITH COVER ON CELLS 2. 3 & 4A)
RIPRAP (SEE NOTE 2) -~
RIPRAP FILTE&
RANDOM FILL-~
DETAIL 2: COVER DETAIL FOR SIDE SLOPES
(NOT TO SCALE)
0
0
"' N
CELL 2
0
0 ro N
0
0
0 ""
DETAIL 1
0
0
N ""
0
0 ... ""
TOP OF BERM
REMOVED
DETAIL3
CELL
0
0
"' ""
DIKE 1-1
CENTERLINE
SLOPE
0.2%
SLOPE
0.2%
A'
5640
5620
1
5600
5580
5560
5540
0
0 ro ""
RADON CAP
VERTICAL SCALE
I .. --I
40 0 40 80 FEET
HORIZONTAL SCALE
I -:::J --200 0
DETAIL 1
~CONTAMINATED
MATERIAL '!V~
RANDOM FILL CLAY LINER
200 400 FEET
FINAL CAP AND ROCK ARMOR
DETAIL2
SEE FIGURE A-5.1-4 FOR
TOE APRON DETAIL
DETAIL 3: COVER DETAIL FOR CELL 1 CONTAMINATED MATERIAL
(NOT TO SCALE)
REV.
No. DATE BY REVISIONS
ffi 11/19/98 RAH Delete cloy layer from e)(terior side slopes, Denison Mines (USA) Corp. !OENISONI)~~ change layer names, & change title block
ffi S/'JJJ/Wll RAH Add Rock apron ot toe of 5: 1 slope MINES
& Project: WHITE MESA MILL
G/30/00 DLS Add Cell 1-1 Disposal Area County: San Juan ta1e: Utah
ffi '"'"' dmf Add Cell 4A Cover FIGURE A-5.1-2
ffi 2/10/10 DLS Add riprop filter and detail references RECLAMATION COVER DETAILS & CROSS SECTION
RECLAMATION PLAN REVISION 3.2.B
12/17/10 "" Add riprap filter and detail references update
~ ..... ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ...... ~ ...... ~.._~ ...... ~~~~~~~~~~ ..... ---''"""'""'"'"-...... ~~~~~ ...... ~"'"'"'"""'--~~--01/1J/11 "" Change figure number, revision update Dale: March, 2010 Design: Drafted By: a.Sledd
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01/13/11
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0
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BY REVISIONS
RAH Delete clay layer from exterior side slopes,
Denison Mines (USA) Corp. i>ENISONI)~~
MINES
change layer names, &c change title block
dmf Add section D-D'
DLS Add detail reference on section D-D'
BM Revision dote update
BM Add CELL 48 on section 0-D'
Project WHITE MESA MILL
County: San Juan te: Utah
FIGURE A-5.1-3
RECLAMATION COVER AND CROSS SECTIONS
RECLAMATION PLAN REVISION 3.2.B
Date: March, 2010 Design: Drafted~: a.Sledd
1-----------9.0'-------I
~ ~ .t:: '"' c: ::J E "'
~ ~
I!! ::J
Li:
~ 7.0' ~ "' < I!! ::J
~ ::J c: .. i ~ c: .2 ii i ~
~ 5 ~ ;?. ::
Denison Mines (USA} Corp. OENISONI)~~
MINES
REVISIONS Project: WHITE MESA MILL
Date
2-22-10 Dl.S
12-17-10 BM
01-13-10 BM
County: San Juan late: Utah
Loca1ion:
FIGURE A-5.1-4
Rock Apron at Base of Toe Cell Outslopes
RECLAMATION PLAN REVISION 3.2.B
Scale: NIA Date: 412199 Drafted By: RAH
Page A-29 Revision 3.2.B
Denison Mines (USA) Corp.
White Mesa Mill Reclamation Plan

5.2.2 Borrow Sources

The sources for soils for the cover materials are as follows:

1. Random Fill (Platform and Frost Barrier) - stockpiles from previous cell
construction activities currently located to the east and west of the tailing
facilities.

2. Clay - will be from suitable materials stockpiled on site during cell construction
or will be imported from borrow areas located in Section 16, T38S, R22E, SLM.

3. Rock Armor - will be produced through screening of alluvial gravels located in
deposits 1 mile north of Blanding, Utah; 7 miles north of the Mill site.

5.3 Cover Construction

5.3.1 General

Placement of cover materials will be based on a schedule determined by analysis of settlement
data, piezometer data and equipment mobility considerations. Settlement plates and piezometers
will be installed and monitored in accordance with Section 5.4 of these Plans and Specifications.

Page A-30 Revision 3.2.B
Denison Mines (USA) Corp.
White Mesa Mill Reclamation Plan

5.3.2 Placement and Compaction

5.3.2.1 Methods
Platform Fill
An initial lift of 3 to 4 feet of random fill will be placed over the tailings surface to form a stable
working platform for subsequent controlled fill placement. This initial lift will be placed by
pushing random fill material or contaminated materials across the tailings in increments, slowly
enough that the underlying tailings are displaced as little as possible. Compaction of the initial
lift will be limited to what the weight of the placement equipment provides. The maximum rock
size, as far as practicable, in the initial lift is 2/3 of the lift thickness. Placement of fill will be
monitored by a qualified individual with the authority to stop work and reject material being
placed. The top surface (top 1.0 feet) of the platform fill will be compacted to 90% maximum
dry density per ASTM D 698.

Frost Barrier Fill

Frost barrier fill will be placed above the clay cover in 12- inch lifts, with particle size limited to
2/3 of the lift thickness. Frost barrier material will come from the excavation of random fill
stockpiles, If oversized material is observed during the excavation of fill material it will be
removed as far as practicable before it is placed in the fill.

In all layers of the cover the distribution and gradation of the materials throughout each fill layer
will be such that the fill will, as far as practicable, be free of lenses, pockets, streaks or layers of
material differing substantially in texture, gradation or moisture content from the surrounding
material. Nesting of oversized material will be controlled through selective excavation of
stockpiled material, observation of placement by a qualified individual with authority to stop
work and reject material being placed and by culling oversized material from the fill utilizing a
grader. Successive loads of material will be placed on the fill so as to produce the best practical
distribution of material.
Page A-31 Revision 3.2.B
Denison Mines (USA) Corp.
White Mesa Mill Reclamation Plan

If the compacted surface of any layer of fill is too dry or smooth to bond properly with the layer
of material to be placed thereon, it will be moistened and/or reworked with a harrow, scarifier, or
other suitable equipment to a sufficient depth to provide relatively uniform moisture content and
a satisfactory bonding surface before the next succeeding layer of earthfill is placed. If the
compacted surface of any layer of earthfill in-place is too wet, due to precipitation, for proper
compaction of the earthfill material to be placed thereon, it will be reworked with harrow,
scarifier or other suitable equipment to reduce the moisture content to the required level shown
in Table 5.3.2.1-1. It will then be recompacted to the earthfill requirements.

No material will be placed when either the materials, or the underlying material, is frozen or
when ambient temperatures do not permit the placement or compaction of the materials to the
specified density, without developing frost lenses in the fill.

5.3.2.2 Moisture and Density Control

As far as practicable, the materials will be brought to the proper moisture content before
placement on tailings, or moisture will be added to the material by sprinkling on the earthfill.
Each layer of the fill will be conditioned so that the moisture content is uniform throughout the
layer prior to and during compaction. The moisture content of the compacted fill will be within
the limits of standard optimum moisture content as shown in Table 5.3.2.1-1. Material that is too
dry or too wet to permit bonding of layers during compaction will be rejected and will be
reworked until the moisture content is within the specified limits. Reworking may include
removal, re-harrowing, reconditioning, rerolling, or combinations of these procedures.

Density control of compacted soil will be such that the compacted material represented by
samples having a dry density less than the values shown in Table 5.3.2.1-1 will be rejected.
Such rejected material will be reworked as necessary and rerolled until a dry density equal to or
greater than the percent of its standard Proctor maximum density shown in Table 5.3.2.1-1.
Page A-32 Revision 3.2.B
Denison Mines (USA) Corp.
White Mesa Mill Reclamation Plan

To determine that the moisture content and dry density requirements of the compacted fill are
being met, field and laboratory tests will be made at specified intervals taken from the compacted
fills as specified in Section 7.4, "Frequency of Quality Control Tests."

5.4 Monitoring Cover Settlement

5.4.1 Temporary Settlement Plates

5.4.1.1 General

Temporary settlement plates will be installed in the tailings Cells. At the time of cell closure, a
monitoring program will be proposed to the Executive Secretary. Data collected will be
analyzed and the reclamation techniques and schedule adjusted accordingly.

5.4.1.2 Installation

At the time of cell closure or during the placement of interim cover temporary settlement plates
will be installed. These temporary settlement plates will consist of a corrosion resistant steel
plate 1/4 inch thick and two foot square to which a one inch diameter corrosion resistant monitor
pipe has been welded. The one inch monitor pipe will be surrounded by a three inch diameter
guard pipe which will not be attached to the base plate.

The installation will consist of leveling an area on the existing surface of the tailings, and placing
the base plate directly on the tailings. A minimum three feet of initial soil or tailings cover will
be placed on the base plate for a minimum radial distance of five feet from the pipe.

5.4.1.3 Monitoring Settlement Plates
Page A-33 Revision 3.2.B
Denison Mines (USA) Corp.
White Mesa Mill Reclamation Plan

Monitoring of settlement plates will be in accordance with the program submitted to and
approved by the DRC. Settlement observations will be made in accordance with Quality Control
Procedure QC-16-WM, "Monitoring of Temporary Settlement Plates."
Cover Layer
Platform Fill
Clay Layer
Frost Barrier
Rip rap
TABLE A-5.3.2.1-1
Placement and Compaction Criteria
Reclamation Cover Materials
Maximum Per Cent
Lift Thickness Compaction
3 Feet Bridging Lift* 80
1 Foot 90
1 Foot 95
2 Feet 95
Top of Tails 6 Inches
Slope 8 Inches
Note:
Allowable Placement
Moisture Content
from Optimum
Moisture Content
±2
Oto + 3
±2
* Compaction of the bridging lift is dependent on stability of fill and equipment used
Percent Compaction is based on standard Proctor dry density (ASTM D-698).
Optimum moisture content of a soil will be determined by ASTM D-2216 or D-4643 methods.
Page A-35 Revision 3.2.B
Denison Mines (USA) Corp.
White Mesa Mill Reclamation Plan

6.0 ROCK PROTECTION

6.1 General

The side slopes of the reclaimed cover will be protected by rock surfacing. Drawings 5.1-1, 5.1-
2, and 5.1-3 show the location of rock protection with the size, thickness and gradation
requirements for the various side slopes.

A riprap layer was designed for erosion protection of the tailings soil cover. According to NRC
guidance, the design must be adequate to protect the soil/tailings against exposure and erosion
for 200 to 1,000 years (NRC, 1990). Currently, there is no standard industry practice for
stabilizing tailings for 1,000 years. However, by treating the embankment slopes as wide
channels, the hydraulic design principles and practices associated with channel design were used
to design stable slopes that will not erode. Thus, a conservative design based on NRC guidelines
was developed. Engineering details and calculations are summarized in the Tailings Cover
Design report (Appendix D).

Riprap cover specifications for the top and side slopes were determined separately as the side
slopes are much steeper than the slope of the top of the cover. The size and thickness of the
riprap on the top of the cover was calculated using the Safety Factor Method (NUREG/CR-4651,
1987), while the Stephenson Method (NUREG/CR-4651, 1987) was used for the side slopes.
These methodologies were chosen based on NRC recommendations (1990).

By the Safety Factor Method, riprap dimensions for the top slope were calculated in order to
achieve a slope "safety factor" of 1.1. For the top of the soil cover, with a slope of 0.2 percent,
the Safety Factor Method indicated a median diameter (D50) riprap of 0.28 inches is required to
stabilize the top slope. However, this dimension must be modified based on the long-term
durability of the specific rock type to be used in construction. The suitability of rock to be used
as a protective cover has been assessed by laboratory tests to determine the physical
Page A-36 Revision 3.2.B
Denison Mines (USA) Corp.
White Mesa Mill Reclamation Plan

characteristics of the rocks. The gravels sourced from pits located north of Blanding require an
oversizing factor of 9.35%. Therefore, riprap created from this source should have a D50 size of
at least 0.306 inches and should have an overall layer thickness of at least three inches on the top
of the cover. From a practical construction standpoint the minimum rock layer thickness may be
up to six (6) inches.

Riprap dimensions for the side slopes were calculated using Stephenson Method equations. The
side slopes of the cover are designed at 5H:1V. At this slope, Stephenson's Method indicated the
unmodified riprap D50 of 3.24 inches is required. Again assuming that the gravel from north of
Blanding will be used, the modified D50 size of the riprap should be at least 3.54 inches with an
overall layer thickness of at least 8 inches.

Riprap bedding should be placed between the random fill and the riprap on the side slopes. The
bedding should consist of medium sand, and should be placed with a minimum layer thickness of
6 inches.

6.2 Materials

Materials utilized for riprap applications will meet the following specifications:

Material

D50 Size D100 Size Layer Thickness

Top Surface Riprap

0.3"0.6"6" Slope Surface Bedding No. 40 Sieve 3” 6”

Slope Surface Riprap

3.5" 7" 8"

Toe Apron Riprap

6.4" 12" 24"

Page A-37 Revision 3.2.B
Denison Mines (USA) Corp.
White Mesa Mill Reclamation Plan

Riprap will be supplied to the project from gravel sources located north of the project site.
Riprap will be a screened product.

Riprap quality will be evaluated by methods presented in NUREG/1623 Design of Erosion
Protection for Long-Term Stabilization Size adjustment will be made in the riprap for materials
not meeting the quality criteria.

6.3 Placement

Riprap and bedding material will be hauled to the reclaimed surfaces and placed on the surfaces
using belly dump highway trucks and road graders. Riprap and bedding will be dumped by
trucks in windrows and the grader will spread the riprap in a manner to minimize segregation of
the material. Depth of placement will be controlled through the establishment of grade stakes
placed on a 200 x 200 foot grid on the top of the cells and by a 100 x 100 foot grid on the cell
slopes. Physical checks of riprap and bedding depth will be accomplished through the use of
hand dug test pits at the center of each grid in addition to monitoring the depth indicated on the
grade stakes. Placement of the riprap and bedding will avoid accumulation of riprap or bedding
sizes less than the minimum D50 size and nesting of the larger sized rock. The riprap and
bedding layer will be compacted by at least two passes by a D-7 Dozer (or equivalent) in order to
key the rock for stability.

7.0 QUALITY CONTROL/QUALITY ASSURANCE

7.1 Quality Plan

A Quality Plan has been developed for construction activities at the Mill. The Quality Plan
includes the following:

1. QC/QA Definitions, Methodology and Activities.
Page A-38 Revision 3.2.B
Denison Mines (USA) Corp.
White Mesa Mill Reclamation Plan

2. Organizational Structure.
3. Surveys, Inspections, Sampling and Testing.
4. Changes and Corrective Actions.
5. Documentation Requirements.
6. Quality Control Procedures.

7.2 Implementation

The Quality Plan will be implemented upon initiation of reclamation work.

7.3 Quality Control Procedures

Quality control procedures have been developed for reclamation and are presented in Attachment
B of this Reclamation Plan. Procedures will be used for all testing, sampling and inspection
functions.

7.4 Frequency of Quality Control Tests

The frequency of the quality control tests for earthwork will be as follows:

1. The frequency of the field density and moisture tests will be not less than one test per
1,000 cubic yards (CY) of compacted contaminated material placed and one test per 500
CY of compacted random fill, radon barrier or frost barrier. A minimum of two tests will
be taken for each day that an applicable amount of fill is placed in excess of 150 CY. A
minimum of one test per lift and at least one test for every full shift of compaction
operations will be taken.

Field density/moisture tests will be performed utilizing a nuclear density gauge (ASTM
D-2922 density and ASTM D-3017 moisture content). Correlation tests will be
Page A-39 Revision 3.2.B
Denison Mines (USA) Corp.
White Mesa Mill Reclamation Plan

performed at a rate of one for every five nuclear gauge tests for compacted contaminated
materials (one
per 2,500 CY placed) and one for every ten nuclear gauge tests for other compacted
materials (one per 5,000 CY of material placed). Correlation tests will be sand cone tests
(ASTM D-1556) for density determination and oven drying method (ASTM D-2216) for
moisture determination.
2. Gradation and classification testing will be performed at a minimum of one test per 2,000
CY of upper platform fill and frost barrier placed. A minimum of one test will be
performed for each 1,000 CY of radon barrier material placed. For all materials other
than random fill and contaminated materials, at least one gradation test will be run for
each day of significant material placement (in excess of 150 CY).

3. Atterberg limits will be determined on materials being placed as radon barrier. Radon
barrier material will be tested at a rate of at least once each day of significant material
placement (in excess of 150 CY). Samples should be randomly selected.

4. Prior to the start of field compaction operations, appropriate laboratory compaction
curves will be obtained for the range of materials to be placed. During construction, one
point Proctor tests will be performed at a frequency of one test per every five field
density tests (one test per 2,500 CY placed). Laboratory compaction curves (based on
complete Proctor tests) will be obtained at a frequency of approximately one for every 10
to 15 field density tests (one lab Proctor test per 5,000 CY to 7,500 CY placed),
depending on the variability of materials being placed.

5. For riprap and bedding materials, each load of material will be visually checked against
standard piles for gradation prior to transport to the tailings piles.

Page A-40 Revision 3.2.B
Denison Mines (USA) Corp.
White Mesa Mill Reclamation Plan

Prior to delivery of any riprap materials to the site rock durability tests will be performed for
each gradation to be used. Test series for riprap durability will include specific gravity,
absorption, sodium soundness and LA abrasion. During construction
gradations will be performed for each type of riprap and bedding when approximately one-third
(1/3) and two-thirds (2/3) of the total volume of each type have been produced or delivered. In
addition, test series for rock durability will be performed on any riprap material at this same
time. For any type of riprap where the volume is greater than 30,000 CY, a test series and
gradations will be performed for each additional 10,000 CY of riprap produced or delivered.

Energy Fuels Resources
(USA) Inc.
WHITE MESA MILL
Updated Tailings Cover Design
Report

December2016

3665 JFK Parkway Suite 206
Fort Collins, CO USA
Updated Tailings Cover Design Report
Energy Fuels Resources (USA) Inc. MWH
i December 2016
TABLE OF CONTENTS
1.0 INTRODUCTION ............................................................................................................. 1
1.1 Scope of Report ................................................................................................... 1
1.2 Updates from 1996 Cover Design ........................................................................ 2 1.3 Limitations............................................................................................................ 3
2.0 SITE CONDITIONS ......................................................................................................... 5
2.1 Location ............................................................................................................... 5 2.2 Climate and Vegetation ........................................................................................ 5
2.2.1 Climate ..................................................................................................... 5 2.2.2 Vegetation ................................................................................................ 5 2.3 Geology and Seismicity........................................................................................ 6
2.4 Hydrogeology ....................................................................................................... 6 2.5 Reclamation Materials ......................................................................................... 7
2.5.1 Tailings Characterization .......................................................................... 7
2.5.2 Cover Borrow Material Characterization ................................................... 7 2.5.3 Erosion Protection Material Characterization .......................................... 10
3.0 REGULATORY CRITERIA ............................................................................................ 13
4.0 COVER DESIGN ........................................................................................................... 15
4.1 Drainage and Slopes ......................................................................................... 15
4.2 Cover System .................................................................................................... 15
4.3 Freeze/Thaw ...................................................................................................... 16 4.4 Radon Attenuation ............................................................................................. 16
4.5 Vegetation and Biointrusion ............................................................................... 17 4.6 Infiltration ........................................................................................................... 17 4.7 Slope Stability Analysis ...................................................................................... 18
4.8 Settlement and Liquefaction Analyses ............................................................... 18 4.9 Erosion Protection .............................................................................................. 19 4.10 Tailings Dewatering ........................................................................................... 20
4.10.1 Tailings Cells 2 and 3 ............................................................................. 20 4.10.2 Tailings Cells 4-A and 4-B ...................................................................... 20 4.11 Material Quantities ............................................................................................. 21
5.0 CELL 2 COVER CONSTRUCTION AND PERFORMANCE ASSESSMENT ................ 22
5.1 Overview ............................................................................................................ 22
5.2 Cover Placement and Revegetation ................................................................... 22
5.3 Cover Performance Assessment ........................................................................ 23
6.0 ADDITIONAL PLANS AND MONITORING PROGRAMS ............................................. 24
6.1 Settlement Monitoring ........................................................................................ 24
6.2 Revegetation Plan .............................................................................................. 24 6.3 Final Cover Verification ...................................................................................... 24
6.4 Closure and Post-Closure Monitoring ................................................................. 24
7.0 REFERENCES .............................................................................................................. 26

Updated Tailings Cover Design Report

Energy Fuels Resources (USA) Inc. MWH
ii December 2016

LIST OF TABLES

Table 2-1. Summary of Laboratory Test Results for Borrow Stockpiles and Estimated Volumes
Table 2-2. NRC Riprap Scoring of Potential Rock Sources Table 4-1. Reclamation Cover Material Quantity Summary

LIST OF FIGURES

Figure 1-1 ET Cover Profile Figure 2-1 Regional Location Map
Figure 2-2 Borrow Stockpile Locations

LIST OF APPENDICES
Appendix A Materials Characterization
Appendix B Freeze/Thaw Analysis
Appendix C Radon Emanation Modeling Appendix D Vegetation and Biointrusion Evaluation
Appendix E Slope Stability Analysis Appendix F Settlement and Liquefaction Analyses Appendix G Erosional Stability Evaluation
Appendix H Tailings Dewatering Appendix I Settlement Monitoring Strategy Appendix J Revegetation Plan
Appendix K Durability Appendix L Cell 2 Reclamation Cover Implementation and Performance Assessment Plan

Updated Tailings Cover Design Report

Energy Fuels Resources (USA) Inc. MWH
1 December 2016
1.0 INTRODUCTION
This report presents the design of a monolithic evapotranspiration (ET) cover for the tailings
management cells at the Energy Fuels Resources (USA) Inc. (EFRI) White Mesa Uranium Mill (Mill). The Mill is located approximately 6 miles south of Blanding, in San Juan County, Utah.
The Mill site includes a conventional acid leach process mill, associated support facilities, and lined tailings management cells. The tailings management cells are located south of the Mill and comprise the following:

• Cell 1 – 55 acres, used for the evaporation of process solutions
• Cell 2 – 65 acres, used for storage of barren tailings sands (which has been filled with tailings sands and covered with a minimum of approximately 3 feet of interim
cover across the cell)
• Cell 3 – 70 acres, used for storage of barren tailings sands (which have been
partially covered with a minimum of approximately 3 feet interim cover across the
majority of the cell, except the center of the cell which is currently receiving mill waste)
• Cell 4A – 40 acres, used for storage of barren tailings sands and evaporation of process solutions
• Cell 4B – 40 acres, currently being used for evaporation of process solutions

The cover design in this report has been written assuming tailings management Cells 2, 3, 4A,
and 4B receive tailings to the maximum permitted tailings elevations. Cell 2 is full and partially reclaimed. Cell 3 was used for tailings storage, but is currently only receiving mill waste. Cell 3
is partially full and partially reclaimed. Cell 4A is the only cell currently receiving tailings and is partially full. Cell 4B is used for evaporation of process solutions and has not been used for storage of tailings. The tailings cover design assumes Cell 4B will be used for future tailings
storage.
1.1 Scope of Report
A previous “Tailings Cover Design” report for the White Mesa Mill was prepared by Titan Environmental Corporation (Titan, 1996), and presented design criteria for a multi-layered cover system. This design report was included as Appendix D of the Reclamation Plan, Revision 4.0
(Denison, 2009) and previous versions of the Reclamation Plan.
An Updated Tailings Cover Design Report (MWH, 2011) was prepared to replace the Titan
(1996) report as Appendix D to the Reclamation Plan, Revision 5.0 (Denison, 2011). The 2011 report provided design criteria for a proposed monolithic ET cover system for all the tailings
management cells. This report is an update to the 2011 report and is provided as Appendix A to
Reclamation Plan, Revision 5.1. The revised report includes subsequent cover design updates provided in EFRI responses to interrogatories and review comments (Denison, 2012; EFRI,
2012a; EFRI, 2015a) from Utah Department of Environmental Quality (UDEQ), Division of Waste Management and Radiation Control (DWMRC) on Reclamation Plan, Revision 5. Prior to 2015, the DWMRC was two separate divisions of UDEQ, the Division of Radiation Control
and the Division of Solid and Hazardous Waste.
Updated Tailings Cover Design Report

Energy Fuels Resources (USA) Inc. MWH
2 December 2016
This report provides detailed summaries and results of the analyses conducted to evaluate the long-term stability of the tailings reclamation cover including evaluations of freeze/thaw, radon
attenuation, biointrusion, infiltration, slope stability, settlement, liquefaction, erosional stability,
and dewatering. This report also presents plans for final cover verification, vegetation, and long-term settlement monitoring.
1.2 Updates from 1996 Cover Design
The cover system presented in Titan (1996) was 6 feet thick, and consisted of random fill and
clay, compacted to 95 percent of maximum dry density. The cover system consisted of the following materials, outlined below by individual layers and thicknesses from top to bottom:
• 3 in (7.6 cm) Erosion Protection Layer (gravel)
• 2 ft (61 cm) Radon Attenuation Layer (random fill)
• 1 ft (30.5) Radon Attenuation Layer (compacted clay)
• Minimum 3 ft (91.4 cm) Radon Attenuation and Grading Layer (random fill)

This cover design was presented in the Reclamation Plan, Revision 4.0 (Denison, 2009) for
Cells 1, 2, 3, and 4A. Titan (1996) analyzed the proposed cover with respect to radon flux attenuation, infiltration, effects of free/thaw, erosion protection, and static and pseudostatic
slope stability.
A conceptual ET cover design was proposed by EFRI for the White Mesa Mill disposal cells in
the Infiltration and Contaminant Transport Modeling (ICTM) reports (MWH 2007 and 2010) submitted to the DWMRC to fulfill the White Mesa Mill’s Ground Water Discharge Permit No. UGW370004. It was intended that the final design of the tailings cover would be completed as
part of an updated tailings cover design report.
EFRI stated their intent to submit an ET cover design as part of their license renewal in a
meeting with DWMRC on October 5, 2010 after review of the DWMRC Reclamation Plan, Version 4.0 Interrogatories – Round 1 (DRC, 2010). The proposed conceptual ET cover design
was provided to DWMRC on October 7, 2010 and was essentially the same as presented in the
2010 ICTM report (MWH, 2010). The ET cover proposed and evaluated as described in this Updated Tailings Design Report (9.5 to 10.5 feet thick) is shown in Figure 1-1 and consists of
the following materials outlined below by individual layers and thicknesses from top to bottom:

• Layer 4 - 0.5 ft (15 cm) thick Erosion Protection Layer (gravel-admixture or topsoil)
• Layer 3 - 3.5 ft (107 cm) thick Growth Medium Layer acting as a Water
Storage/Biointrusion/Frost Protection/Secondary Radon Attenuation Layer (loam to
sandy clay)
• Layer 2 – 3.0 to 4.0 ft (91 to 122 cm) thick Compacted Cover acting as the Primary
Radon Attenuation Layer (highly compacted loam to sandy clay)
• Layer 1 - 2.5 ft (76 cm) thick (minimum) Interim Fill Layer acting as a Secondary
Radon Attenuation and Grading Layer (loam to sandy clay)

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The loam to sandy clay soil is the same material referred to in Titan (1996) as random/platform fill. This material is stockpiled at the site.

This Updated Tailings Design Report provides the results of additional laboratory testing and analyses for the monolithic ET cover design, including radon flux attenuation, infiltration, effects
of freeze/thaw, erosion protection, and static and pseudostatic slope stability. This report also presents analyses not performed for the Titan (1996) design, including biointrusion, tailings dewatering, liquefaction, and settlement.
1.3 Limitations
The analyses presented in this report use information from reports prepared by others that have
been provided by EFRI, and MWH’s experience with the White Mesa Mill site and other similar uranium mill sites. The analyses are limited by the information available but are supplemented
by MWH’s experience with the White Mesa Mill and other similar uranium mill sites. In the event
that there are any changes in the nature, design, or characteristics of the project, or if additional data are obtained, conclusions and recommendations contained in the report will need to be re-
evaluated by MWH in light of the proposed changes or additional information obtained.
MWH warrants that services were performed within the limits prescribed by EFRI with the usual
thoroughness and competence of the engineering profession. No other warranty or representation, either expressed or implied, is included or intended in our technical documents.
T1
0.5'
3.5'
T2
2.5' (MIN)
EROSION PROTECTION LAYER
(TOPSOIL OR GRAVEL ADMIXTURE)
LAYER 3 - GROWTH MEDIUM
LAYER 1 - INTERIM FILL
LAYER 2 - COMPACTED COVER
TAILINGS
VEGETATION
ET COVER PROFILE FIGURE 1-1
1009740 WM ET COVR
AUG 2016
WHITE MESA MILL TAILINGS RECLAMATION
COVER THICKNESS TABLE
CELL COVER
(T1)
RADON
ATTENUATION
LAYER (T2)
1 9.5'3.0'
2 10.5'4.0'
3 10.0'3.5'
4A & 4B 9.5'3.0'
ENERGY FUELS
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2.0 SITE CONDITIONS
2.1 Location
The White Mesa Uranium Mill is located in San Juan County in southeastern Utah, approximately 6 miles south of Blanding, Utah. The site is located on White Mesa, a flat area
bounded on the east by Corral Canyon, to the west by Westwater Creek and to the south by Cottonwood Canyon. A site location map is shown on Figure 2-1. The Mill is located at an elevation of approximately 5,600 ft above mean sea level. The EFRI facilities consist of a
uranium processing mill and five lined tailings management cells located within an approximately 686-acre restricted area. Total land holdings are approximately 5,415 acres (Denison, 2011).
2.2 Climate and Vegetation
2.2.1 Climate
The regional climate of the Blanding area is semiarid with an average annual precipitation of 13.3 inches (Denison, 2011). Most precipitation is in the form of rain, with snowfall accounting
for about one quarter of the annual total precipitation. There are two separate rainfall seasons
in the region, a late summer season when monsoonal moisture from the Gulf of Mexico produces thunderstorms, and a second during the winter season related to fronts from the
Pacific. The average annual Class A pan evaporation is 68 inches, with the largest monthly
evaporation rate typically occurring in July (Denison, 2011).
The mean annual temperature for Blanding, Utah is 52°F, based on the period of 1971-2000.
January is typically the coldest month, with a mean monthly temperature of about 30°F. July is generally the warmest month, with a mean monthly temperature of 76°F. Daily ranges in temperatures are typically large.
As an element of the pre-construction baseline study and ongoing monitoring programs, the Mill operates an onsite meteorological station, which became operational in early 1977 and
continues to operate. Additional information on climatic conditions is presented in the Reclamation Plan, Revision 5.1.
2.2.2 Vegetation
As described in Denison (2011), the natural vegetation near the site is characterized by pinyon-juniper woodland intergrading with big sagebrush (Artemisia tridentata) communities. The
understory of this community, which is usually quite open, is composed of grasses, forbs, and
shrubs that are also found in the big sagebrush communities. Based on work completed by Dames & Moore in the 1978 Environmental Report (Dames & Moore, 1978), no designated or
proposed endangered plant species occur on or near the Mill site. A complete discussion of
flora and fauna present in the vicinity of the Mill site is provided in Dames & Moore (1978).
In June 2012, the area surrounding the Mill site was surveyed for plant composition to
supplement data presented in Dames & Moore (1978). Survey results confirmed that two principal plant community types in the vicinity of the Mill site. These plant communities are Big Sagebrush shrubland and Juniper woodland. In addition to these two principal plant community
types, there are a number of disturbed areas in different stages of successional development. These areas reflect past disturbances such as sagebrush removal (chaining and plowing) and seeding and intense grazing, as evidenced by a complete lack of any understory species in
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some areas. The vegetation survey conducted in 2012 provides information of species that exist on the Mill site and their relative importance in terms of plant cover. All areas surveyed in
2012 show that big sagebrush (Artemisia tridentata) is the dominant species and subdominants
are either broom snakeweed (Gutierrezia sarothroae) or galleta (Hilaria jamesii). Additional discussion on this survey is provided in Appendix D.
2.3 Geology and Seismicity
The White Mesa Mill is located within the Blanding Basin of the Colorado Plateau physiographic province in southeastern Utah. The site is underlain by unconsolidated alluvium overlying
sedimentary bedrock, consisting primarily of sandstone and shale. The unconsolidated deposits are primarily eolian silt and sand and range from 1 to 30 ft thick (these deposits have been removed where the tailings cells are located). The bedrock underlying the site is relatively
undeformed, with horizontally oriented bedding (generally dips are less than 3 degrees). Cretaceous Dakota Sandstone and Burro Canyon Formation are at or near the surface at the
site; these sandstone units have a combined thickness of 100 to 140 ft at the site. Beneath the
Burro Canyon Formation is the Jurassic Morrison Formation, which is primarily shale. The Brushy Basin Member is the uppermost member of the Morrison Formation and is composed
primarily of bentonitic mudstones, siltstones, and claystones. Beneath the Brushy Basin
Member are the Westwater Canyon, Recapture, and Salt Wash members of the Morrison Formation. Beneath the Morrison Formation lies the Middle to Late Jurassic San Rafael group,
and the Late Triassic to Jurassic Glen Canyon Group. Additional details of the geologic setting are included in the Reclamation Plan, Revision 5.1.
The seismicity of the Colorado Plateau is characterized as small to moderate magnitude with a
low to moderate rate of widely-distributed earthquakes (Wong and Humphrey, 1989). The Mill area is located within a relatively tectonically stable portion of the Colorado Plateau, characterized by relatively sparse concentrations of earthquake events. Most of the larger
seismic events in the Colorado Plateau have occurred along its margins rather than in the interior central region. Based on the region's seismic history, the probability of a major damaging earthquake occurring at or near the Mill site is low. Additional information on the
seismotectonics of the Mill site and vicinity is provided in the Reclamation Plan, Revision 5.1.
Several site-specific seismic studies have been performed for the Mill site (UMETCO, 1988;
Tetra Tech, 2006; Tetra Tech, 2010, MWH, 2015b). The most recent study (MWH, 2015b) was performed to provide additional information for design of the tailings reclamation cover system.
This study concluded that the maximum horizontal acceleration value at the Mill site for a
seismic event associated with an average return period of 10,000 years is 0.15g. Based on this maximum horizontal acceleration, a pseudo-static coefficient of 0.10g was used for seismic
stability analyses of the reclaimed tailings impoundments (presented in Appendix E). 2.4 Hydrogeology
Groundwater beneath the site is first encountered as a perched zone within the Burro Canyon Formation. The low-permeability Brushy Basin Member of the Morrison Formation acts as an aquitard and forms the base of this perched zone. The saturated thickness of the perched zone
ranges from less than 5 ft to as much as 82 ft beneath the site, assuming the base of the Burro Canyon Formation is the base of the perched zone. The water table of the perched zone was 13 to 116 ft below ground surface (bgs) at the facility in 2007 (MWH, 2010), and is shallowest
near the wildlife ponds east of the Mill and tailings management cells. Groundwater within the
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perched zone generally flows south to southwest beneath the site. The Reclamation Plan, Revision 5.1 and MWH (2010) provide more details of the perched zone hydrogeology.
Aquifers of the Entrada sandstone and Navajo sandstone are located approximately 1,200 ft
bgs, and are considered one aquifer for purposes of this report. The Navajo/Entrada Aquifer is capable of yielding significant quantities of water to wells (hundreds of gallons per minute
(gpm)). Water in the Entrada/Navajo Aquifer is artesian, and rises approximately 800 ft above the base of the overlying Summerville Formation resulting in static water levels 390 to 500 ft below the ground surface (Denison, 2011). The Reclamation Plan, Revision 5.1 provides more
information regarding the aquifer hydrogeology.
2.5 Reclamation Materials
The following sections summarize the characteristics of the tailings, the cover borrow materials
to be used in reclamation of the tailings disposal cells, and the potential erosion protection materials.
2.5.1 Tailings Characterization
Geotechnical and radiological data on tailings were previously collected and data applicable to
the cover design are included in Appendix A.1. This data was previously presented in
Attachments D and E of the Reclamation Plan, Version 4.0 (Denison, 2009). Geotechnical laboratory testing was conducted by Western Colorado Testing, Inc. (1999b) on the tailings and
included specific gravity, standard Proctor, Atterberg limits, and gradation (including
hydrometer). Testing was conducted on four samples of tailings from Cell 2 and two samples of tailings from Cell 3. Rogers & Associates Engineering Corp. (1988) measured radium-226
activity concentration and the radon emanation coefficient on one tailings sample. An additional investigation of the tailings in Cells 2 and 3 was performed in 2013 and results
were presented in the Tailings Data Analysis Report (MWH, 2015a). This investigation was performed to satisfy DWMRC’s request that EFRI collect site-specific tailings data to supplement previous investigations. The objectives of the investigation were to measure the
physical properties of the tailings and characterize the stratigraphy of the tailings through Cone Penetration Test (CPT) soundings, direct push sampling, and geotechnical laboratory testing.

The geotechnical and radiological testing results for the tailings were used for the radon emanation modeling and the settlement and liquefaction analyses presented in this report.
2.5.2 Cover Borrow Material Characterization
Geotechnical and radiological data on potential cover materials were previously collected and
data applicable to the cover design are included in Appendix A.1. Some of this data was
previously presented in Attachment D of the Reclamation Plan, Version 4.0 (Denison, 2009) and in Titan (1996). Geotechnical laboratory testing of potential cover material (random fill) from on-
site was conducted by Chen and Associates, Inc. (1978, 1979, and 1987), Geosyntec Consultants (2006), and Western Colorado Testing, Inc. (1999a). Geotechnical testing included in-situ moisture contents, specific gravity, standard Proctor, modified Proctor, Atterberg limits,
gradation, and permeability. Radon diffusion coefficients of random fill samples collected from on-site stockpiles were measured by Rogers & Associates Engineering Corp. (1988). Geotechnical and radiological testing results were used for the radon emanation modeling and
the settlement and liquefaction analysis presented in this report.
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MWH conducted a field investigation at the Mill site on October 12, 2010 to supplement existing soils data and further evaluate the geotechnical properties of the potential cover material.
Potential cover borrow material locations are shown on Figure 2-2. MWH visually evaluated all
of the borrow locations and collected representative bulk samples from select locations. The bulk samples were sent to Advanced Terra Testing in Denver, Colorado for laboratory testing.
Laboratory testing conducted on the collected samples included in-situ water contents, Atterberg limits, specific gravity, and gradation (including hydrometer). The laboratory testing results are summarized in Table 2-1 and provided in Appendix A.2.
An additional field investigation was conducted in April 2012 to supplement existing soils data and further evaluate the geotechnical properties of the potential cover material. Test pits were
excavated into select on-site stockpiles and representative bulk samples were collected for laboratory testing. Laboratory testing included Atterberg limits, specific gravity, gradation,
standard Proctor compaction, saturated hydraulic conductivity, and moisture retention. The test
pit logs and laboratory testing logs are provided in Appendix A.3.
The volume of material available at each stockpile was estimated based on the 2010 and 2012
field investigations and is summarized in Table 2-1. The results from the cover borrow material characterization were used for the radon attenuation, settlement and liquefaction, and erosional
stability cover design analyses presented in this report.
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Table 2-1. Summary of Laboratory Test Results for Borrow Stockpiles and Estimated Volumes
Borrow Stockpile ID
Estimated Stockpile
Volume1 (cy)
Field Investigation Date Material Description Material
USCS
Sample
ID
Sample Depth (ft)
Gravimetric Water Content (%)
Atterberg Limits2 LL/PL/PI (%)
Specific
Gravity
Particle Size3 Max. Density5 (pcf)
Opt. Moist.
Cont.5
(%)
Sat. Hyd. Cond. (cm/s)
15 Bar Grav. Moist. Cont. (%)
Soil
Group4 % Gravel % Sand % Silt % Clay % Fines
E1 15,900 Apr-2012 Topsoil (Sandy Silty Clay) CL-ML E1-A 0 - 3 -- 23/18/5 2.61 0 41 43 16 59 118 11 1.3 x 10-4 5.2 Topsoil
E2 92,000 Oct-2010 Silty Sand/Clayey Sand SM A 5 4.5 NP -- 0.5 77.1 13.5 8.9 22 B
SC B 12 5.7 23.3/11.2/12.1 2.64 13.1 50.3 22.6 14.0 37 U
E3 16,800 Apr-2012 Clay with Sand CH E3-A 0 - 3 -- 54/24/30 2.53 0 23 29 48 77 105 19 9.5 x 10-5 13.6 F
E4 66,600 Oct-2010 Sandy Clay CL A 5 8.6 30.3/14.4/15.9 -- 0.0 41.2 39.1 19.7 59 U
E5 68,800 Oct-2010 Sandy Clay CL A 6 9.0 33.2/14.3/18.9 -- 0.0 35.5 38.1 26.4 65 F
Apr-2012 Clay with Sand CH E5-B 0 - 3 -- 51/24/27 2.56 2 15 36 47 83 F
E6 100,700 Oct-2010 Clay CL A 5 14.4 40.2/15.8/24.4 2.74 0.1 17.7 49.5 32.7 82 F
E7 74,900 Oct-2010 Sandy Clay CL A 6 5.7 26.2/16.3/9.9 -- 0.0 30.2 56.1 13.7 70 U
E8 227,300 Oct-2010 Sandy Clay CL A 2 7.4 23.0/12.0/11.0 -- 0.0 47.0 36.9 16.1 53 U
Apr-2012 Gravel with Clay and Sand GW-GC E8-B 0 - 4 -- 27/16/11 2.63 40.0 31.0 18.0 11.0 29 125 11 6.0 B
W1 85,700 Oct-2010 Sandy Clay CL A 5 8.8 32.1/14.5/17.6 -- 0.0 40.6 37.6 21.8 59 U
W2 584,500
Oct-2010 Sandy Clay CL A surface 8.5 28.1/13.1/15.0 -- 0.2 41.5 42.5 15.8 58 U
Apr-2012 Clayey Sand with Gravel SC W2-A 0 - 3 -- 24/14/10 2.62 30 45 15.0 10.0 25 6.9 B
Apr-2012 Silty Clayey Sand with Gravel SC-SM W2-B 0 - 5 -- 18/13/5 2.63 41 45 9.0 5.0 14 128 9 1.5 x 10-3 3.5 B
W3 84,800 Oct-2010 Topsoil (Sandy Silty Clay) CL-ML A surface 4.3 20.9/16.2/4.7 -- 0.2 44.2 39.2 16.4 56 Topsoil
W4 90,000 Oct-2010 Topsoil (Sandy Silt) ML A 5 5.3 21.9/18.0/3.9 -- 0.0 32.6 54.3 13.1 67 Topsoil
Apr-2012 Topsoil (Sandy Silty Clay) CL-ML W4-B 0 - 4 -- 26/19/7 2.60 0 38 44 18 62 Topsoil
W5 2,001,160 Apr-2012 Sandy Clay CL W5-A 0 - 4 -- 27/18/9 2.61 1 49 32 18 50 7.0 U
Clayey Sand with Gravel SC W5-B 0 - 4 -- 24/15/9 2.63 29 44 19 8 27 122 10 1.1 x 10-3 3.6 B
W6 93,400 Oct-2010 Topsoil (Sandy Silty Clay) CL-ML A surface 3.3 23.1/16.5/6.6 -- 0.0 34.3 51.8 13.9 66 Topsoil
W7 39,500 Oct-2010 Sandy Clay CL A 5 8.7 28.0/10.6/17.3 2.67 0.0 43.8 43.1 13.1 56 U
W8 178,411 Apr-2012 Silty Sand with Gravel SM W8-A 0 - 3 -- NP 2.64 35 51 9 5 14 117 13 1.2 x 10-3 5.0 B
Silty Sand with Gravel SM W8-B 0 - 4 -- NP 2.66 32 40 18 10 28 6.4 B
W9 60,250 Oct-2010 Sandy Clay CL A surface 4.4 25.9/12.3/13.5 -- 0.0 37.4 45.2 17.4 63 U
Apr-2012 Sandy Clay CL W9-B 0 - 4 -- 28/16/12 2.63 6 44 35 15 50 115 14 4.1 x 10-4 7.7 U
Notes: 1. Volumes estimated using 2009 topography and assuming a relatively flat bottom surface, except for stockpiles W5, W8 and W9. The volumes for stockpiles W8 and W9 were estimated by comparing the 2011 versus 2009 topography. The volume for stockpile
W5 was estimated using a combination of both methods. 2. LL = Liquid Limit, PL = Plastic Limit, PI = Plasticity Index (PI = LL-PL) 3. Gravel = 4.75 mm to 75 mm, Sand = 0.075 mm to 4.75 mm, Fines: Silt = 0 .075 mm to 0.002 mm, Clay = less than 0.002 mm 4. Group B (broadly graded), Group U (uniformly graded), and Group F (fine textured) based on evaluation of gradations and Benson (2012)*. 5. From standard Proctor test *Benson, C., 2012. Electronic communication from Craig Benson, University of Wisconsin-Madison, to Melanie Davis, MWH, regarding evaluation of gradations performed for potential cover soils for White Mesa, May 20.
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2.5.3 Erosion Protection Material Characterization
Three rock sources were evaluated as potential material sources for use as erosion protection
material (riprap and gravel) at the site. Samples were tested from the Cow Canyon pit located
15 miles south of the Mill, the Brown Canyon pit located 4 miles northeast of the Mill, and the North Pit located 1 mile northeast of Blanding. Samples from each quarry were tested for
durability in general accordance with guidelines for long-term performance outlined by the US Nuclear Regulatory Commission (NRC). These guidelines are for rock to be used as erosion protection material on exposed surfaces and utilize a rock scoring value (Johnson, 2002). The
following laboratory tests were performed, in accordance with U.S. Bureau of Reclamation (1987), to develop scoring criteria: specific gravity, absorption, sulfate soundness and L.A. Abrasion. Durability testing results are provided in Appendix K and were previously presented
as Attachment H to the Reclamation Plan, Revision 4.0 (Denison, 2009). Table 2-2 summarizes the scoring of each potential rock source.
Table 2-2. NRC Riprap Scoring of Potential Rock Sources
Rock Source Score (%) Oversizing Required (%)
Cow Canyon Pit 87.61 None
Brown Canyon 60.98 19.02
North Pit 70.65 9.35

Based on information provided in Johnson (2002), areas defined as critical areas must meet a
score of 65 percent or greater, and areas defined as non-critical areas must meet a score of 50
percent or higher. Critical areas include frequently saturated areas, all channels, poorly drained toes and aprons, control structures and energy dissipation areas. Non-critical areas include
occasionally saturated areas, top slopes, side slopes, and well-drained toes and aprons. The scores calculated for each rock borrow site indicate that all three rock borrow sites would provide suitable rock for construction of the erosion protection along the embankment slopes.
The Cow Canyon and North Pit sources would be used for the rock toe apron areas at the base of the toes of cell outslopes. Oversizing of both the Brown Canyon and North Pit rock would be required if used for construction. The Brown Canyon source would not be used to construct the
rock toe apron areas at the base of the toes of cell outslopes.
REGIONAL LOCATION MAP FIGURE 2-1
1009740 LOC MAP
WHITE MESA MILL TAILINGS RECLAMATION
AUG 2016ENERGY FUELS
REFERENCE:
ADAPTED FROM FIGURE 1-1 IN DENISON MINES (USA)
CORPORATION, 2009. RECLAMATION PLAN WHITE MESA MILL,
BLANDING, UTAH. VERSION 4.0. NOVEMBER.
PROJECT
llTLE 8 MWH
DATE
W8
RANDOM
FILL
W9
RANDOM
FILL
W7
RANDOM FILL
W6
TOPSOIL
W5
RANDOM
FILL
W4
TOPSOIL
W2
RANDOM
FILL
W3
TOPSOIL
E1
TOPSOIL
E7
RANDOM
FILL
E2
RANDOM
FILL
E3
RANDOM
FILL
E4
RANDOM
FILL
E5
RANDOM
FILL
E6
RANDOM
FILL
E8
RANDOM
FILL
W1
RANDOM
FILL
CELL 2
CELL 3
CELL 4A
CELL 1 (EVAPORATION)
CELL 4B
PROJECTED APPROXIMATE
CATCH POINT (SEE NOTE 1)
PROJECTED APPROXIMATE
CATCH POINT (SEE NOTE 1)
PROJECTED
APPROXIMATE CATCH
POINT (SEE NOTE 1)
PROJECTED APPROXIMATE
CATCH POINT (SEE NOTE 1)
PROJECTED APPROXIMATE
CATCH POINT (SEE NOTE 1)
MILL SITE
0.
5
%
0.5
%
0.5
%
0.8
%
0.8
%
1.0%
COVER MATERIAL BORROW LOCATIONS
1009740 BORROW
WHITE MESA MILL TAILINGS RECLAMATION
AUG 2016 FIGURE 2-2
NOTE:
LEGEND
ESTIMATED STOCKPILE VOLUMES
BORROW STOCKPILE ID ESTIMATED STOCKPILE
VOLUME (CY)
E1 15,900
E2 92,000
E3 16,800
E4 66,600
E5 68,800
E6 100,700
E7 74,900
E8 227,300
W1 85,700
W2 584,500
W3 84,800
W4 90,000
W5 2,001,160
W6 93,400
W7 39,500
W8 178,411
W9 60,250
ENERGY FUELS
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3.0 REGULATORY CRITERIA
Prior to the State of Utah obtaining agreement state status in 2004, the tailings at the White
Mesa Mill were regulated primarily by the NRC pursuant to 10 CFR 40, Appendix A, and the U.S. Environmental Protection Agency (EPA) under 10 CFR 61, Subparts A and W, which are
administered by the State of Utah’s Division of Air Quality. The State of Utah regulates the site according to rules and regulations presented in Title R313 – Environmental Quality, Radiation Control. These rules include, through reference, clarification, or exception, sections of 10 CFR
40 extending through Appendix A, and sections of 10 CFR Part 20. Additionally, the site is regulated under the site’s approved Groundwater Discharge Permit (Permit No.UGW370004) (GWDP), which is administered by the State of Utah’s Department of Environmental Quality.
NRC and EPA have a Memorandum of Understanding (MOU) that covers joint expectations under what was originally Subpart T of 40 CFR 61 (uranium mill tailings closure) and a generic
MOU on elimination of dual regulation. The NRC regulations also incorporate other standards
by reference that were promulgated by the EPA pursuant to the Uranium Mill Tailings Radiation Control Act (UMTRCA – 1978), and Section 112 of the Clean Air Act, as amended. Compliance
with these regulations under the authority of the State of Utah is provided through UAC R313-
24.
The reclamation cover design has been developed in accordance with UAC R313-24, 40 CFR
Part 192, and Part I.D.8 of the GWDP. The following documents have also provided design
guidance:
• Benson, C.H. W.H. Albright, D.O. Fratta, J.M. Tinjum, E. Kucukkirca, S.H. Lee, J.
Scalia, P.D. Schlicht, and X. Wang, 2011. Engineered Covers for Waste Containment: Changes in Engineering Properties and Implications for Long-Term
Performance Assessment (in four volumes). NUREG/CR-7028, Prepared for the U.S. Nuclear Regulatory Commission, Washington, D.C., December.
• Johnson, T.L., 2002. "Design of Erosion Protection for Long-Term Stabilization.” U.S. Nuclear Regulatory Commission (NRC), NUREG-1623. September
• Nelson, J.D. , S.R. Abt, R.L. Volpe, D. Van Zye, N.E. Hinkle, and W.P. Staub, 1986.
Methodologies for Evaluating Long-Term Stabilization Designs of Uranium Mill Tailings Impoundments, NUREG/CR-4620. June.
• U. S. Department of Energy (DOE), 1988. Effect of Freezing and Thawing on UMTRA Covers, Albuquerque, New Mexico, October.
• U.S. Department of Energy (DOE), 1989. UMTRA-DOE Technical Approach Document, Revision II, UMTRA-DOE/AL 050425.0002. December.
• U.S. Nuclear Regulatory Commission (NRC), 1984. Radon Attenuation Handbook for Uranium Mill Tailings Cover Design, NUREG/CR-3533
• U.S. Nuclear Regulatory Commission (NRC), 1989. Calculation of Radon Flux Attenuation by Earthen Uranium Mill Tailings Covers, Regulatory Guide 3.64.
• U.S. Nuclear Regulatory Commission (NRC), 1990. "Final Staff Technical Position, Design of Erosion Protective Covers for Stabilization of Uranium Mill Tailings Sites," August.
• U.S. Nuclear Regulatory Commission (NRC), 2003. Standard Review Plan for the Review of a Reclamation Plan for Mill Tailings Sites under Title II of the Uranium Mill
Tailings Radiation Control Act of 1978. NUREG-1620, Revision 1, June.
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The key state and federal performance criteria for tailings cover design and reclamation include:
• Attenuate radon flux to a rate of 20 pCi/m2-s, averaged over each entire cell
• Minimize infiltration into the reclaimed tailings cells
• Maintain a design life of up to 1,000 years and at least 200 years
• Provide long-term isolation of the tailings, including slope stability and geomorphic
durability to withstand erosional forces of wind and runoff (up to the probable maximum precipitation event) as well as design to accommodate seismic events (up to the peak ground acceleration from the maximum credible earthquake)
• Designs to accommodate minimum reliance on active maintenance

Following reclamation of the Mill, a designated area of the site (including the tailings cells) will be transferred to the U.S. Department of Energy (DOE) for long-term care and maintenance and
institutional control. Prior to transfer, the site closure and reclamation is reviewed by the NRC
for compliance with applicable design criteria and guidance (specifically Appendix A of 10 CFR 40). The guidelines of reclamation review of a Title II facility are presented in NUREG-1620 (NRC, 2003).

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4.0 COVER DESIGN
4.1 Drainage and Slopes
The slopes and drainage for the new ET cover have been modified from the 2009 Reclamation Plan (Denison, 2009) to incorporate the current ET cover system design. The slopes and
drainage are to provide acceptable erosional stability under long-term conditions, represented by storms up to the Probable Maximum Precipitation (PMP) event. The evaluation of acceptable erosional stability was conducted according to current NRC guidelines documented
in NRC (1990) and Johnson (2002). Results of analyses conducted for drainage and slopes are presented in Appendix G. The drainage and slopes are shown on the Drawings (Attachment A to the Reclamation Plan, Revision 5.1).
The drainage on the top surface of the ET cover at Cells 1, 2, and 3 is designed at a 0.5 percent
slope, with portions of Cell 2 top surface at a 1 percent slope, and portions of Cells 4A and 4B
top surfaces at 0.8 percent slope. The external side slopes of the embankments will be graded to 5:1 (horizontal:vertical). The overall site drainage around the reclaimed tailings cells is the
same as presented in Denison (2011).
4.2 Cover System
The current cover system proposed for reclamation of the tailings cells is designed as a
monolithic ET cover. This is different from the cover system proposed in Denison (2009). A monolithic ET cover is the preferred design in this environment to minimize infiltration, meet the
radon emanation standard, minimize maintenance over the short and long term, and promote sustainability. The proposed cover design has been designed with sufficient thickness to protect against frost penetration, attenuate radon flux, minimize both plant root and burrowing
animal intrusion, and provide adequate water storage capacity to minimize the rate of infiltration into the underlying tailings. Furthermore, the cover is designed to be stable under both static and anticipated seismic conditions, and to provide tailings isolation under long-term wind and
water erosion conditions.
The ET cover system has a total thickness of 9.5 feet for Cells 1, 4A, and 4B, 10 feet for Cell 3,
and 10.5 feet for Cell 2. The difference in cover thicknesses is based on the radon emanation analyses (Appendix C). The cover system will consist of the following materials listed below
from top to bottom:

• Layer 4 - 0.5 ft (15 cm) thick Erosion Protection Layer (gravel-admixture or topsoil)
• Layer 3 - 3.5 ft (107 cm) thick Growth Medium Layer acting as a Water
Storage/Biointrusion/Frost Protection/Secondary Radon Attenuation Layer (loam to
sandy clay)
• Layer 2 – 3.0 to 4.0 ft (91 to 122 cm) thick Compacted Cover Layer acting as the
Primary Radon Attenuation Layer (highly compacted loam to sandy clay)
• Layer 1 - 2.5 ft (76 cm) thick (minimum) Interim Fill Layer actin as a Secondary
Radon Attenuation and Grading Layer (loam to sandy clay)

All the layers combined comprise the monolithic ET cover system. Layer 1 was placed in
stages on Cell 2 and the majority of Cell 3 as interim cover. Layer 1 will be placed on the remaining area of Cell 3, all of the Cell 1 Disposal Area, and Cells 4A and 4B. It is assumed
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that this material was or will be dumped and minimally compacted by construction equipment to approximately 80 percent of standard Proctor density. Layer 1 will provide the platform for the
remaining cover system and act as a secondary radon attenuation layer. Layer 2 will be
compacted cover layer and act as the primary radon attenuation layer. It will be 3 - 4 feet thick (3 feet for Cells 1, 4A and 4B, 3.5 feet for Cell 3, and 4 feet for Cell 2) and compacted to 95
percent of standard Proctor density. Layer 3 will be the growth medium layer. Layer 3 will also act as a secondary radon attenuation layer and a protection layer for the primary radon attenuation layer (Layer 2). Layer 3 will be 3.5 feet thick and placed at 85 percent of standard
Proctor density to optimize water storage and rooting characteristics for plant growth. Layer 4 will be a 0.5-foot thick erosion protection layer. This layer will consist of topsoil in areas where the cover is sloped at 0.5 percent and topsoil-gravel admixture in areas where the cover is
sloped at 1 percent. The topsoil-gravel admixture will consist of topsoil (75 percent) mixed with 1-inch minus gravel (25 percent).
4.3 Freeze/Thaw
Titan (1996) included a freeze/thaw analysis for the reclamation cover design. Updates to these
analyses were provided in Denison (2011) and Denison (2012). These updates reflect
modifications to the proposed cover to incorporate an ET cover, a revised grading design, and results of cover material testing conducted in 2010. The 2012 update also included revisions to
address review comments from DWMRC on Reclamation Plan, Revision 5.0 (DRC, 2012a). The analyses provided in Denison (2012) are included as Appendix B. The updated calculations of frost penetration at the site were performed with the computer program ModBerg
(CRREL), which uses a built-in weather database, as well as user-defined soil parameters. The freeze/thaw calculations estimate the total depth of frost penetration for the cover system
as 32 inches (2.67 ft). The frost penetration depth is not anticipated to exceed the depth of Layers 3 and 4 of the cover system (combined depth of 4 ft). The physical and hydraulic properties of these cover system layers after construction are expected to be close to long-term
properties from pedogenic processes, such that post-construction changes due to freeze/thaw should be minimal. A complete description of the freeze/thaw analyses conducted for the
proposed cover system is presented in Appendix B.
4.4 Radon Attenuation
Titan (1996) included an analysis of radon attenuation for the reclamation cover design. Radon
attenuation analyses were later conducted by MWH (2010) for the conceptual design of the monolithic ET cover. The results were presented in Appendix H of the Infiltration and
Contaminant Transport Modeling Report (MWH, 2010). These analyses have been updated for this report to incorporate the revised design of the ET cover, changes to the grading plan, and additional geotechnical testing of material properties.
Emanation of radon-222 from the top surface of the proposed cover system for the tailings cells was calculated using the NRC RADON model (NRC, 1989). The model was used to confirm
that the designed cover system can achieve the State of Utah’s long-term radon emanation standard for uranium mill tailings (Utah Administrative Code, Rule 313-24), 20 picocuries per square meter per second (pCi/m2-s). The analyses were conducted following the guidance
presented in NRC publications NUREG/CR-3533 (NRC, 1984) and Regulatory Guide 3.64 (NRC, 1989). Results of the analyses show that the proposed cover system can reduce the rate of radon-222 emanation to less than 20 pCi/m2-s, averaged over the entire area of each tailings
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cell. A complete description of the radon attenuation analyses conducted for the ET cover system is included in Appendix C.
4.5 Vegetation and Biointrusion
The plant species proposed for the cover system consist of native perennial grasses, forbs, and
shrubs. The use of these species in reclamation of the tailing management cells provide a permanent or sustainable plant cover because of the highly adapted nature of these species to existing site conditions, their tolerance to environmental stresses such as drought, fire, and
herbivory, and their ability to effectively reproduce over time. These species can coexist and fully utilize plant resources to minimize the establishment of invasive weeds and deep rooted woody species on the site. Once established, the proposed seed mixture produce a grass-forb-
shrub community of highly adapted and productive species that can effectively compete with undesirable species. A complete discussion of cover vegetation is provided in Appendix D.

The proposed cover system is designed to minimize both plant root and burrowing animal intrusion through the use of thick layers of soil cover (total thickness 9.5 to 10.5 ft) in
combination with a highly compacted layer placed at a depth that is below the expected rooting
and burrowing depths of species that may inhabit the site. Root growth and animal burrowing into the highly compacted radon attenuation layer (beginning at a depth of 4 ft) will be restricted
because of the high density of this material (compaction to 95 percent relative compaction based on the standard Proctor test). In addition, both root density and the size of roots decrease at a rapid rate with rooting depth, further limiting the potential for root growth into the
compacted radon attenuation layer of the cover system. A complete discussion of the biointrusion evaluation through the ET cover is presented in Appendix D. 4.6 Infiltration
Infiltration modeling was conducted for the monolithic ET cover and a complete description of the analyses were provided in the ICTM Report (MWH, 2010). The modeling was updated to
address DWMRC comments on the ICTM Report (DRC, 2012b; 2013) and to incorporate additional geotechnical and hydrologic data collected in as part of field investigations conducted
in 2010 and 2012 for cover borrow material and in 2013 for in situ tailings. The updated
infiltration modeling results were presented in EFRI (2012b) and EFRI (2015b). The evaluation of infiltration of precipitation through the cover system was evaluated with the computer program
HYDRUS-1D (Simunek et al., 2009). The modeling used historical daily meteorological data for
precipitation and evapotranspiration over a 57-year climate period, as well as assumptions that were either conservative or based on anticipated conditions. Given the flat nature of the cover
(less than 1 percent slope), no run-on- or runoff-based processes were assumed to occur. As a result, precipitation applied to the cover surface was removed through evaporation or transpiration, retained in the soil profile as storage, or transmitted downward as infiltration.
The model-predicted average long-term water flux rate through the cover system is 2.3 mm/yr. Additional model scenarios were analyzed to evaluate the sensitivity of the soil properties,
climate, and reduced vegetation parameters. The range of average long-term water flux rates for these scenarios varied from 1.9 to 8.6 mm/yr. The model-predicted water flux rates through the monolithic ET cover indicate that the available cover storage capacity should be sufficient to
significantly reduce infiltration through the cover system.
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4.7 Slope Stability Analysis
Static (long-term) and pseudo-static slope stability analyses were performed for two critical
cross sections through the tailings embankments. The analyses were performed using limit
equilibrium methods with the computer program SLOPE/W (Geo-Slope, 2007). A complete description of the input parameters and assumptions used in the analyses is provided in
Appendix E. Material strength parameters used for the analyses were based on historical laboratory testing on tailings and clay materials (Advanced Terra Testing, 1996; Chen and Associates, 1987; D’Appolonia, 1982; and Western Colorado Testing, 1999b), laboratory testing
conducted in 2010 and 2012 on potential cover borrow materials (see Attachment B of EFRI, 2012b), laboratory testing conducted in 2013 on tailings (MWH, 2015a) and typical published values.
The mean Peak Ground Acceleration (PGA) for reclaimed conditions is 0.15g based on the site
specific PSHA (MWH, 2015b). This PGA represents the seismic loading from the Maximum
Credible Earthquake (MCE). The seismic coefficient used for the pseudo static stability analysis was 0.10 g (equal to 2/3 of the PGA).

The calculated factors of safety range from 2.6 to 3.9 and 1.7 to 2.5 for static and pseudo-static loading conditions, respectively. The calculated factors of safety for both the long-term static
condition and the pseudo-static condition exceed the required values of 1.5 and 1.1 respectively
(NRC, 2003).
4.8 Settlement and Liquefaction Analyses
Settlement analyses and evaluation of liquefaction potential for the tailings were performed for the tailings cells. A discussion of the analyses and results are provided in Appendix F.
One-dimensional settlement analyses were conducted to evaluate settlement due to placement of final cover, dewatering of the tailings cells, long-term static (creep) settlement, and
seismically induced (seismic) settlement. The results of these analyses of specific locations were used to evaluate differential settlement and the potential for cover cracking. The CPT
locations in Cell 2 and 3 from the October 2013 tailings investigation (MWH, 2015a) were
selected as the locations for the settlement analyses. Parameters used for the settlement analyses are summarized in Appendix F. Tailings profiles and properties are based on results
presented in MWH (2015a). Parameters for cover materials are based on cover material testing
conducted in 2010 and 2012 (summarized in Appendix A). Evaluation of total settlement due to final cover placement and dewatering indicates potential future settlement during active
maintenance ranging from 0.9 to 1.6 feet. The majority of this settlement is expected occur after Phase 1 cover construction with the
remaining settlement occurring soon after Phase 2 cover construction. During this time, additional fill may be placed in low areas to maintain positive drainage of the cover surface. The estimated total predicted future long-term settlement that could occur (due to creep and seismic
settlement) after the maintenance period is complete ranges from approximately 0.3 to 0.7 feet. Estimates of total long-term settlement were calculated by summing the static creep and seismic settlement estimates. As such, these estimates are considered somewhat
conservative, as they are not independent (i.e. as long-term static creep progresses, void ratio reduction will occur and the potential for seismic settlement will reduce over time as a result).
The estimated differential settlement after completion of active maintenance is sufficiently low
that slope reversal and ponding is not expected to occur on a cover slope of 0.5 to 1.0 percent.
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In addition, the results indicate that cracking of the highly-compacted radon barrier due to settlement-induced strains is not expected.

Liquefaction analyses were performed to evaluate the risk of earthquake-induced liquefaction of the tailings. Two methods (Idriss and Boulanger, 2008; Youd et al., 2001) were used for the
analyses. Material properties were obtained from results of laboratory tests on tailings samples collected during the October 2013 tailings investigation of Cells 2 and 3 (MWH, 2015a). Other parameters used were based on CPT data measured during the October 2013 tailings
investigation. Results of the site-specific PSHA (MWH, 2015b) were used in the analyses and include a PGA of 0.15g for an approximate 10,000-year return period, with the mean seismic source being a magnitude (Mw) 5.5 event occurring 20 km from the site. Computed factors of
safety against liquefaction range from 2.0 to 2.8. Based on the calculated factors of safety, the tailings are not susceptible to earthquake-induced liquefaction.
4.9 Erosion Protection
The erosional stability of the reclaimed tailings cells was evaluated in terms of long-term water
erosion under extreme storm conditions. The analyses were conducted in general accordance
with NRC guidelines (NRC, 1990; Johnson, 2002). A description of the analyses performed is presented in Appendix G.
The components of erosion protection for the reclaimed tailings cells consist of the following:
• The cover on the top surface of Cells 1, 2, and 3, with slopes of 0.5 percent, would be constructed as a vegetated slope, with 6 inches of topsoil.
• The portions of Cell 2 with a top surface of 1 percent slope, and the portions of Cells 4A and 4B with 0.8 percent slope, would be constructed as a vegetated slope with 6 inches
of topsoil mixed with 25 percent (by weight) gravel (maximum diameter of 1 inch).
• Erosion protection of external (5H:1V) side slopes would be provided by various sized
angular and rounded riprap with layer thicknesses ranging from 6 to 8 inches and
median particle sizes ranging from 1.7 to 5.3 inches. A 6-inch layer of filter material would be placed between the erosional protection layer and underlying soil layer in
locations with riprap greater than 1.7 inches. A narrow zone of this filter will also be
placed at the interface between the riprap on the external side slopes and the cover surface erosion protection layer.
• The toe of embankment slopes will have erosional protection and scour protection on the west and east sides of the cells provided by a rock apron measuring approximately 10
inches deep and 5 feet wide, with a median particle size of 3.4 inches. On the south
side of cells 4A and 4B, and east side of Cell 4A, the rock apron would be approximately 3 feet in depth, 13 feet in width, and have a median particle size of 10.6 inches. On the
north side slope of the Cell 1 disposal area, the rock apron would be approximately 3 feet deep, 11 feet wide, and have a median particle size of 9 inches.
• The Sedimentation Basin area will be graded to 0.1 percent slope and constructed as a vegetated slope with 6 inches of topsoil.
• The Diversion Channel will be excavated into bedrock.
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4.10 Tailings Dewatering
Cells 2, 3, 4A, and 4B are constructed to allow tailings dewatering. Dewatering analyses have
been conducted for these tailings management cells assuming the cells receive tailings to the
maximum permitted tailings elevation. Dewatering analyses for Cells 2 and 3 were conducted by MWH and are presented in Appendix J of MWH (2010). Dewatering analyses for Cells 4A
and 4B were conducted by Geosyntec (2007a, 2007b). The pertinent excerpts from MWH (2010), Geosyntec (2007a, 2007b), and DRC (2008) are included in Appendix H and summarized in the following sections.
Water levels in Cells 2 and 3 were measured during the October 2013 tailings investigation (MWH, 2015a). Results of the investigation indicated migration of water towards the sump in
Cell 2. This was expected since water has been pumped from the Cell 2 sump since 2008. Dewatering of Cell 3 has not yet started and the October 2013 investigation reflected this, with
measured water levels a few feet below the tailings surface.
To monitor changes in water levels due to dewatering prior to and after final cover placement,
installation of standpipe piezometers was recommended across the cells prior to the first phase
of final cover placement and extension of the piezometers during final cover placement. These piezometers will provide information on the rate and extent of dewatering of the tailings. The
piezometers are primarily located adjacent to the settlement monuments to minimize damage to
the piezometers during cover construction, while providing sufficient locations to evaluate the water levels. Water levels are recommended to be monitored at the same frequency and
duration as the settlement monuments. Standpipe piezometers were installed across Cell 2 in June 2016 and locations are shown in Appendix L. 4.10.1 Tailings Cells 2 and 3
Dewatering of Cells 2 and 3 is performed via the drain network consisting of perforated PVC pipe located across the base of the cells. The pipes drain to an extraction sump on the
southern side of each cell. Tailings pore water drains by gravity to the sump and (for Cell 2) is then pumped to Cell 1 for evaporation. Dewatering of Cell 3 has not started. The design for the
drains is the same for both cells, and each drain system covers an approximate area of 400 by
600 feet in each cell. The drain pipes are covered by an envelope of sand over the drains, in contrast to a continuous layer of sand across the bottom of the tailing cells.

The analyses of dewatering of Cells 2 and 3 were performed with the computer code MODFLOW (McDonald and Harbaugh, 1988; Harbaugh et al., 2000) with the Department of
Defense Groundwater Modeling System (GMS) pre- and post-processor. The slimes drains were simulated with the Drain package in MODFLOW, and values of hydraulic conductivity were based on measured values reported for uranium mill tailings at a similar facility (MWH, 2010). A
complete description of the dewatering modeling conducted for tailings Cells 2 and 3 is provided in Appendix J of MWH (2010), and is attached as Appendix H.1. 4.10.2 Tailings Cells 4-A and 4-B
The drain network design in Cells 4A and 4B is the same for each cell, and is different from that constructed in Cells 2 and 3. The drain network in Cells 4A and 4B consists of a series of 12-
inch wide HDPE strip drains wrapped in geotextile, and covered by sand bags. The drain spacing is 50 feet across the entirety of both cells. The HDPE drains are connected to a
perforated 4-inch diameter PVC pipe bedded in drain aggregate and wrapped in geotextile. The
PVC pipe gravity drains the tailings water to the sump for extraction.
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A tailings cell dewatering model was not constructed for Cells 4A and 4B because analytical
solutions presented by Geosyntec Consultants (2007a, 2007b) were deemed adequate given
the uniform distribution of the drain system in those cells. Material properties for tailings in Cells 4A and 4B were estimated based on results of laboratory tests and assuming the tailings would
be similar to the tailings in Cells 2 and 3. Cell 4B is currently used for evaporation and has not received tailings. These analyses assume Cell 4B will be used for tailings storage in the future. Dewatering of Cells 4A and 4B are estimated to be dewatered significantly faster than Cells 2
and 3 due to the more extensive drain network. 4.11 Material Quantities
Material volumes required for construction of the interim cover, final cover, and erosion protection are provided in Table 4-1. The quantities of materials available for construction of the
cover are also provided in Table 4-1. A summary of the volumes of borrow stockpiles was
provided in Table 2-1. Sufficient quantities are available from on-site sources for the topsoil and random fill materials. The bedding and gravel materials would be obtained from off-site
commercial sources. Three commercial sources have been identified as potential sources for
the bedding and gravel materials. The potential off-site sources were listed in Section 2.5. Sufficient quantities of material are available from the off-site sources identified.
Table 4-1. Reclamation Cover Material Quantity Summary
Material Quantity Required for Reclamation
(cy)
Quantity Available (Identified
Sources) (cy)
Topsoil (for Erosion Protection Layer) 195,000 284,100 (on-site stockpiles)
Gravel (1-inch minus for Erosion
Protection Layer) 24,000 Sufficient quantity available (off-
site commercial source)
Random Fill (total for additional Layer 1 material, Layer 2, and Layer 3) 3,500,000 3,596,621 (on-site stockpiles)
Riprap (for 5H:1V side slopes and rock aprons) 38,000 Sufficient quantity available (off-site commercial source)
Riprap Bedding/Filter Layer 16,0001 Sufficient quantity available (off-
site commercial source)
Note: 1. Based on 6-inch thick medium sand bedding/filter layer beneath riprap.
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5.0 CELL 2 COVER CONSTRUCTION AND PERFORMANCE ASSESSMENT
5.1 Overview
On November 11, 2015, DWMRC recommended that EFRI develop a plan to begin reclamation of the tailings management cells. This plan would consist of placing the proposed cover system
presented in White Mesa Reclamation Plan, Revision 5.1 on Cell 2 and demonstrating acceptable cover performance via a performance monitoring program.
Cell 2 final cover construction will take place before final cover construction on other cells at the White Mesa Mill. Cell 2 final cover construction will occur in two phases and includes a performance monitoring test section (Primary Test Section) containing a lysimeter constructed
in the southeast portion of Cell 2 concurrently with the Phase 1 cover placement. A Supplemental Test Section will be constructed north of the tailings management cells relating to
vegetative cover and erosion control. The plan for implementing final cover placement on Cell 2
and performance assessment and monitoring is presented in Appendix L.
5.2 Cover Placement and Revegetation
Layer 1 of the reclamation cover was placed in stages on Cell 2 as interim cover from 1991 through 2008. The remaining reclamation cover layers will be placed in two phases.

Phase 1 cover construction began in April 2016, and includes placement of: (1) additional interim cover to achieve Layer 1 design grades prior to placement of cover Layer 2 and (2) the
entirety of Layer 2. Between the first and second phase of cover placement, additional cover material will be placed as needed in low areas to maintain positive drainage of the Phase 1 cover surface.
A cover performance monitoring test section, containing a lysimeter, was constructed in the southeast portion of Cell 2 in the fall of 2016 concurrently with the Phase 1 cover placement.
The Supplemental Test Section is proposed to be constructed in the fall of 2017. Instrumentation for monitoring Cell 2 after Phase 1 cover placement will also include settlement
monuments and piezometers.
Cell 2 Phase 2 cover placement will occur after the following milestones have been met:
• Test section performance monitoring is complete
• Phase 1 cover settlement criteria has been met
• DWMRC approval of performance of the Cell 2 cover test section

Additional discussion of performance monitoring and settlement criteria is presented in
Appendix L.
Phase 2 cover construction will consist of placement of Layer 3 and placement of Layer 4, the
erosion protection layer. The top surface of the final cover will be revegetated after Phase 2 cover construction is completed. As-built reports will be provided to DWMRC within 90 days
after completion of each phase of cover construction.

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5.3 Cover Performance Assessment
EFRI constructed a performance monitoring test section within the Cell 2 cover concurrently
with the Phase 1 cover placement. The test section will be monitored to assess performance of
the overall cover system for the tailings cells. A Supplemental Test Section will be constructed north of the tailings management cells relating to vegetative cover and erosion control.
Appendix L contains discussion of the Cell 2 cover performance assessment plan. The performance monitoring area is constructed as a large Alternative Cover Assessment
Program (ACAP) drainage lysimeter to provide direct measurement of all components of the water balance, except evapotranspiration. In-situ soil water content and temperature measurements of the cover soils will be taken within the performance monitoring area, and a
weather station installed adjacent to the performance monitoring area will be used to collect weather data.
Percolation rate and vegetation success are the performance parameters for the cover system.
The performance monitoring requirements follow NUREG/CR-7028 (Benson et al., 2011) and incorporate site-specific recommendations from Dr. Craig H. Benson (personal communication).
Data from secondary variables (i.e. meteorological conditions, all water balance quantities, soil
water content, soil temperature, in-service soil and vegetation properties, etc.) related to the primary performance parameter will be used for interpretative purposes, as recommended in
NUREG/CR-7028 (Benson et al., 2011). Although performance criteria are not suggested in
NUREG/CR-7028 for these parameters and are not stipulated herein, monitoring of these parameters is recommended so that the percolation data can be interpreted mechanistically.
Current monitoring of radon emanation rates from the top surface of Cell 2 and settlement will continue during placement of the Cell 2 cover. Existing settlement monuments will be extended upward during cover construction. Standpipe piezometers were installed across Cell 2 during
Phase 1 Cell 2 cover construction to monitor water levels within the tailings. After Phase 1 cover construction is complete, it is recommended that settlement monuments and piezometers be monitored weekly for the first month, biweekly for the second month, and monthly thereafter.
Settlement and dewatering data will be evaluated concurrently with the cover performance monitoring. The evaluation will determine if sufficient settlement has occurred to facilitate
Phase 2 cover placement. Decreasing trends in settlement followed by maximum of 0.1 feet (30
mm) of cumulative settlement over 12 months (for at least 90 percent of the settlement monuments) will be considered acceptable to proceed with placement of the Phase 2 Cell 2
cover.
Monitoring of Cell 2 will also occur after Cell 2 Phase 2 cover construction is complete and will
include radon emanation, settlement, and vegetation monitoring. Closure monitoring is discussed in Section 6.4.
A data quality report will be provided to the DWMRC quarterly and a comprehensive performance monitoring report will be submitted annually to the DWMRC during monitoring. The annual performance monitoring report will include quarterly data quality reports and will also
summarize settlement and standpipe piezometer monitoring, and include the annual vegetation monitoring report.

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6.0 ADDITIONAL PLANS AND MONITORING PROGRAMS
6.1 Settlement Monitoring
There are two objectives for monitoring settlement associated with the tailings cells: (1) assurance that the materials in the tailings cells have stabilized prior to construction of the final
cover system, and (2) verification that the final cover surface is not experiencing significant settlement after final cover construction. Monitoring of interim cover surface will be conducted at the end of operations to measure rates and locations of settlement prior to construction of the
final cover system. After construction of the final cover system, settlement monitoring will be conducted as part of post-closure performance monitoring. Additional discussion on settlement monitoring is presented in Appendix I.
6.2 Revegetation Plan
Revegetation of the tailing cells at the Mill site will be completed following construction of the
cover system. The revegetation process will establish a grass-forb community consisting primarily of native, perennial grasses and forbs that are highly adapted to the climatic and
edaphic conditions of the site. Revegetation methods will follow state-of-the-art techniques for
soil amendments, seedbed preparation, seeding and mulching. In addition, quality assurance and quality control procedures will be followed to ensure that revegetation methods are
implemented correctly and the results of the process meet expectations. A revegetation plan
presenting seedbed preparation, soil amendments, species types, seeding rates, and quality assurance is presented in Appendix J.
6.3 Final Cover Verification
Following construction of the final reclamation cover, testing will be performed to verify that the
cover meets the requirements of long-term radon-222 emanation (less than 20 pCi/m2-s
averaged over the entire area of the tailings cell). Verification testing will be performed in accordance with procedures described in 40 CFR Part 61, Appendix B, Method 115, or another
method of verification approved by the DWMRC. Verification testing will be conducted for the entire reclaimed tailings area at once. Results of the verification testing will be reported within 90 days of the completion of all testing and analysis relevant to the verification.
Measurement, calculation of radon-222 emanation or flux, and reporting will be performed in
accordance with procedures described in 40 CFR Part 61, Appendix B, Method 115. The
documentation will include the results of all measurements, the calculations and/or analytical methods used to derive radon flux, and the procedure used to determine compliance. EFRI will
maintain these records will be maintained on site or at an off-site storage facility until the time of
site transfer to the DOE.
6.4 Closure and Post-Closure Monitoring
The performance monitoring and verification tasks for the reclaimed tailings cells are consistent with plans for overall site reclamation and review guidelines in NRC (2003). Key tasks outlined
below will be performed from the time of site reclamation until property transfer to the DOE.

• Settlement. After construction of the final reclamation cover, settlement monitoring will
be conducted as discussed in Appendix I as part of post-closure performance monitoring to verify that the final cover surface is not experiencing significant settlement. It is
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recommended that settlement monuments be monitored weekly for the first month after final cover construction, biweekly for the second month, and monthly thereafter for the
first two years. Quarterly monitoring is recommended after two years. A minimum
monitoring period of 5 years is recommended. Decreasing trends in settlement followed by maximum of 0.1 feet (30 mm) of cumulative settlement over 12 months (based on 90
percent of the settlement monuments) is recommended as acceptable for defining when the final cover surface is no longer experiencing significant settlement.
• Vegetative Cover. The Revegetation Plan discussed in Section 6.2 and Appendix J will be followed. The vegetation performance will be monitored annually for ten years after final cover construction or until revegetation goals have been achieved.
• Erosional Stability. The erosional stability of the cover surface will be monitored on a
semi-annual basis, most likely at the same time as the vegetation monitoring. Elements
of the erosional stability monitoring are degree of vegetation cover (in terms of surface
coverage), identification of settled or ponded areas (such as on the top surface), and identification of rills, gullies, or other areas of runoff concentration. Areas that are
identified as having erosional stability issues will be monitored to determine if corrective action is necessary. Corrective action would include fill placement with topsoil or erosion-resistant materials on the surface, such as a gravel-admixture. The erosional
stability of the cover surface will be monitored by EFRI until that responsibility is changed with property transfer to the DOE.
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7.0 REFERENCES
Advanced Terra Testing (1996). Physical soil data, White Mesa Project, Blanding Utah, July 25.
Benson, C.H. W.H. Albright, D.O. Fratta, J.M. Tinjum, E. Kucukkirca, S.H. Lee, J. Scalia, P.D.
Schlicht, and X. Wang, 2011. Engineered Covers for Waste Containment: Changes in Engineering Properties and Implications for Long-Term Performance Assessment (in 4
volumes). NUREG/CR-7028, Prepared for the U.S. Nuclear Regulatory Commission, Washington, D.C., December.
Chen and Associates, Inc., 1978. Soil Property Study, Earth Lined Tailings Retention Cells,
White Mesa Uranium Project, Blanding, Utah, Report prepared for Energy Fuels Nuclear, Inc., July 18.
Chen and Associates, Inc., 1979. Soil Property Study, Proposed Tailings Retention Cells, White
Mesa Uranium Project, Blanding, Utah, Report prepared for Energy Fuels Nuclear, Inc. on January 23.
Chen and Associates, Inc., 1987. Physical Soil Data, White Mesa Project, Blanding Utah,
Report prepared for Energy Fuels Nuclear, Inc.
Dames & Moore, 1978. Environmental Report, White Mesa Uranium Project, San Juan County,
Utah, January 20, 1978, revised May 15, 1978.
D’Appolonia Consulting Engineers, Inc., 1982. Letter Report, Section 16 Clay Material Test Data, White Mesa Uranium Project, Blanding, Utah, Report prepared for Energy Fuels
Nuclear, Inc. on March 8.
Denison Mines USA Corp. (Denison), 2009. Reclamation Plan, White Mesa Mill, Blanding Utah, Revision 4.0, November.
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Utah, Revision 5.0, September.
Denison Mines (USA) Corp. (Denison) 2012. Responses to Interrogatories – Round 1 for
Reclamation Plan, Revision 5.0, March 2012. May 31.
Energy Fuels Resources (USA) Inc. (EFRI), 2012a. Responses to Interrogatories – Round 1 for
Reclamation Plan, Revision 5.0, March 2012. August 15.
Energy Fuels Resources (USA) Inc. (EFRI), 2012b. Responses to Interrogatories – Round 1 for the Revised Infiltration and Contaminant Transport Modeling Report, March 2010.
August 15.
Energy Fuels Resources (USA) Inc. (EFRI), 2015a. Responses to Review of August 15, 2012 (and May 31, 2012) Energy Fuels Resources (USA) Inc. Responses to Round 1
Interrogatories on Revision 5 Reclamation Plan, White Mesa Mill Site, Blanding Utah, Report
Dated September 2011. August 31.
Updated Tailings Cover Design Report

Energy Fuels Resources (USA) Inc. MWH
27 December 2016
Energy Fuels Resources (USA) Inc. (EFRI), 2015b. Responses to Review of September 10, 2012 Energy Fuels Resources (USA) Inc. Responses to Round 1 Interrogatories on Revised
Infiltration and Contaminant Transport Modeling Report, White Mesa Mill Site, Blanding
Utah, Report Dated March 10. August 31.
GEO-SLOPE International Ltd (Geo-Slope), 2007. Slope/W, Version 7.17, Calgary, Alberta.
Geosyntec Consultants (Geosyntec), 2006. Stockpile Evaluation, Tailings Cell 4A, White Mesa
Mill, Blanding, Utah. Letter prepared by Chad Bird and Gregory Corcoran for H. Roberts of International Uranium (USA) Corporation, January 23.
Geosyntec Consultants (Geosyntec), 2007a. Analysis of Slimes Drain (Cell 4A). May 11.
Geosyntec Consultants (Geosyntec), 2007b. Analysis of Slimes Drain (Cell 4B). August 30.
Harbaugh, A.W., E.R. Banta, M.C. Hill, and M.G. McDonald, 2000, MODFLOW-2000, the U.S.
Geological Survey modular ground-water model -- User guide to modularization concepts and the Ground-Water Flow Process: U.S. Geological Survey Open-File
Report 00-92, 121 p.
Idriss, I., and R. Boulanger, 2008. Soil Liquefaction During Earthquakes. EERI monograph MNO-12.

Johnson, T.L., 2002. "Design of Erosion Protection for Long-Term Stabilization.” U.S. Nuclear Regulatory Commission (NRC), NUREG-1623. September.

McDonald, M.G., and A.W. Harbaugh, 1988. A Modular Three-Dimensional Finite-Difference Ground-Water Flow Model: U.S. Geological Survey Techniques of Water-Resources
Investigations, book 6, chap. A1, 586 p.
MWH, Inc. (MWH), 2007. Denison Mines (USA) Corp. Infiltration and Contaminant Transport Modeling Report, White Mesa Mill Site, Blanding, Utah. Report prepared for Denison Mines.
November.
MWH, Inc. (MWH), 2010. Denison Mines (USA) Corp. Revised Infiltration and Contaminant Transport Modeling Report, White Mesa Mill Site, Blanding, Utah. Report prepared for
Denison Mines. March.
MWH, Inc. (MWH), 2011. Denison Mines (USA) Corp. Updated Tailings Cover Design Report,
White Mesa Mill, Blanding, Utah. Report prepared for Denison Mines. September.
MWH, Inc. (MWH), 2015a. Energy Fuels Resources (USA) Inc. (EFRI) White Mesa Mill Tailings Data Analysis Report. Report prepared for EFRI. April.
MWH, Inc. (MWH), 2015b. Energy Fuels Resources (USA) Inc. (EFRI). Probabilistic Seismic
Hazard Analysis, White Mesa Mill Site, Blanding, Utah. Report prepared for Energy Fuels Resources (USA) Inc. March.
Updated Tailings Cover Design Report

Energy Fuels Resources (USA) Inc. MWH
28 December 2016
Nelson, J.D., S.R. Abt, R.L. Volpe, D. Van Zye, N.E. Hinkle, and W.P. Staub, 1986. Methodologies for Evaluating Long-Term Stabilization Designs of Uranium Mill Tailings
Impoundments, NUREG/CR-4620. June.
Rogers & Associates Engineering Corporation, 1988. Two separate letters prepared by Renee Y. Bowser for C.O. Sealy of Umetco Minerals Corporation, March 4 and May 9.
Simunek, J., M. Sejna, H. Saito, M. Sakai, and M. Th. van Genuchten, 2009. The HYDRUS-1D
Software Package for Simulating the Movement of Water, Heat, and Multiple Solutes in Variably Saturated Media, Version 4.08, HYDRUS Software Series 3, Department of
Environmental Sciences, University of California – Riverside, Riverside, CA. pp. 240.
Tetra Tech, Inc. (formerly MFG, Inc.) (Tetra Tech), 2006. White Mesa Uranium Facility Cell 4 Seismic Study, Blanding Utah. November 27.
Tetra Tech, Inc. (Tetra Tech), 2010. Technical Memorandum: White Mesa Uranium Facility, Seismic Study Update for a Proposed Cell, Blanding, Utah. February 3.
Titan Environmental Corporation (Titan), 1996. Tailings Cover Design, White Mesa Mill,
October 1996
UMETCO. 1988. Cell 4 Design, Appendix A, White Mesa Project.
U.S. Bureau of Reclamation (USBR), 1987. Design of Small Dams, Third Edition, U.S.
Department of Interior.
U. S. Department of Energy (DOE), 1988. Effect of Freezing and Thawing on UMTRA Covers,
Albuquerque, New Mexico, October.
U.S. Department of Energy (DOE), 1989. UMTRA-DOE Technical Approach Document, Revision II, UMTRA-DOE/AL 050425.0002. December.
U.S. Environmental Protection Agency (EPA), 1994. The Hydrologic Evaluation of Landfill
Performance (HELP) Model, Version 3, EPA/600/R-94/168b, September.
U.S. Nuclear Regulatory Commission (NRC), 1984. Radon Attenuation Handbook for Uranium
Mill Tailings Cover Design, NUREG/CR-3533
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U.S. Nuclear Regulatory Commission (NRC), 2003. Standard Review Plan for the Review of a
Reclamation Plan for Mill Tailings Sites under Title II of the Uranium Mill Tailings Radiation Control Act of 1978. NUREG-1620, Revision 1, June.
Updated Tailings Cover Design Report

Energy Fuels Resources (USA) Inc. MWH
29 December 2016
Utah Department of Environmental Quality, Utah Division of Radiation Control (DRC). 2008. Email correspondence between David Rupp and Greg Corcoran regarding items noted
during drain construction inspection, Cell 4A. June 25 – July 2.
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Interrogatories – Round 1. September.
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Round 1. March.
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Y. Moriwaki, M. Power, P. Robertson, R. Seed, and K. Stokoe, 2001. Liquefaction Resistance of Soils: Summary report from the 1996 NCEER and 1998 NCEER/NSF Workshops of Evaluation of Liquefaction Resistance of Soils, Journal of Geotechnical
and Geoenvironmental Engineering, October.

Updated Tailings Cover Design Report

APPENDIX A

MATERIALS CHARACTERIZATION

Updated Tailings Cover Design Report

APPENDIX A.1
HISTORICAL LABORATORY TESTING

Updated Tailings Cover Design Report

APPENDIX A.1.1
CHEN AND ASSOCIATES, INC.
1978
•
.: chen and associates, inc ..
CONSULTING ENGINEERS
DENVER, COLORADO 102:23 JOJ/74-4-71~
[ H C. I H [ [ 11 N' 1!n4 EAST ARST STREET • CASPER, WYOMING 11-b-01 • 307/2J.4...212i
Job No. 16,406
SECTION 2
Extracted Data From
SOIL PROPERTY STUDY
EARTH LIHEO TAILINGS RETEHTIOH CELLS
WHITE MESA URANIUM PROJECT
BLANDING, UTAH
Prepa red for:
ENERGY FUELS NUCLEA~. INC.
PARK CENTRAL
1515 ARAPAHOE STREET
OEHYER, COLORADO 80202
July 18, 1978
TAl!lE I
SU~Y OF lABOAATOAY TEST ACSUlTS
P•9•
CRAOATION AXALYSIS H>'IOLCED HAM[ Al! I L rt
$pu r e So 11 K.a~ ,., ..... Pusln9 l•u lt'l•n llo!Hvro Gr.v t TyF"! Sl10 #200 2 ..£< 0..111 ty Cont•nt ft s. c: ~ (l) l ( cf (l
#16 ss 19 ti,,, 16
6 #16 u
)) 8 )/4 In, S6 12 102. 22.
25 II !6 77
114 70
3/4 I 62
NP 1116 Sl
10 1J ·~er ay
26 6 #16 6S
n lS es S9 9S,O Ill, .6.
I) 118 84
21 #4 89
8 3/ll In. 65 27 10),4 0 1.
11 4 #8 S!!
2l 6 #16 70 109,9 lZ .4 o. •yey
26 lO 114 n
48 2!i #30 87 \Ju th.red
•yHon• 30 #JO 96 1ystone
9 II~ 57 c 4'f
20 9 VeHh• rod
I HOt\C 10 Ml In. 72 .. s cl •y
2 #16 59 S II t
:!) 6 #30 7l
s ,+1l 72 10.s
14 311! f n, 69 102. Ii
9 #B 64 27 I 015 4
TML£ I
SUlllVJl,Y or LA.!!OA~TOAY TEST AESULTS
C~ADATIOH >HALYSIS
/i..ll<li!iU'!I P11Hn9
SI 10 llWJ
(l)
)/8 In, 60
)/8 In, 73
S6
3/8 In, es
)/8 In, 79
Hl6 76
)/II In. 6)
Kl& 71
lf8 SS
II~ . 64
llJO 71
1fl1 71
114 7S
NI& 75
n, )!+
116 68
1116 44
NS 67
Ii In, 46
#!6 59
/{~ 7S
#16 93
t, IU,
So I
Typ~
•y
C ay
ty
CalcHeout
t. S It
C ay
IJuthered
layHone
ayston•
TABLE 11
LABORATORY PERMEABILITY TEST
Su a ga Perm¢ 111 ty
Pressure
(psf Ft r
11 l.6 16. 11 . Sx l
SI c 1.'ly . I 22 .o 10 I
aystone . o 18. 3 911 500 6 •
Clay l 03 .11 18.0 97 5 2 • x IC
s 11 t ,9 l 2. 4 91, 5 3.
s 1 l t i 10.s , l. 5 93 x IC
102.4 17.9 1C
106.4 16.4 97 . l 7 l.
l Oli. 1 15.8 s 2.3
105.2 13.9 95 3.
1 6E-08
2 3E~08
,'I
111
RESU OF G LIHITS
PERCENT ATTERBERG LIHI
PASSI HG LI qu Id Plastic Shrinkage E
NO. 200 Lim! t Lim! t Lim! t
SIEVE (%) {%)
20 17 17
y cl 33 25 .62
Cl 65 18 17. 5 I,
23 17 18 ! •
one 91 41 21 I 2
69 29 15 14

Updated Tailings Cover Design Report

APPENDIX A.1.2
CHEN AND ASSOCIATES, INC.
1979
chen and associates, inc.
CONSULT ING E N G INEERS
SOil t fOUNOATIOH % S. ZUNI DENVER, COLOP.ADO !022J
IHGl>i!:H.IHG
SECTION 3
Extracted Data From
SOIL PROP::'.?.:-:l SJ:UDY
PROPJSrn TAILil~GS RE':i.'ENria~ CELLS
hHITE MESA CBN-!IL1·i PROJECT
BLANDING, lJI'P..H
Prepared for:
ENERGY FUELS NUCL.EAR1 INC.
1515 ".RAPJl._qQ£ STREET
D-::NVER, CDLD~D'.J 80202
303/74-4-7105
Jo~ No. 17 ,130 January 23 , 1979
CHEN AND ASSOCIATES
TABLE I :
MARY OF ORATORY T R
1----1----1----
NP
16
p:: ---21 --5
------·
21 Li
1-----1---------
CliEN AND ASSOCIATES
TABLE I
M MARY OF LA RATORY R
110 20 ---10
22 6
NP
5
10 --· -5
25 6
CHEN AND ASSOCIATES
TABLE I
M MARY OF LABORATORY TES R U
I
1 r
p I LI
action
Dry Moisture % of Sur ty cat on Dens I ty Content l\STM Prnssura Sc (p ) sf
cl 100.2 j 9. lt
I
113. 8 11. 7
I Pf n2
• 9 • 7 97
cl '7 .3 5
stone
fn2Q .n 18.5 7
~ I 17.5 9.7 I 3
l l 2 , l1 12,9
t 100,2 11~. 7 500 7
I
.8 15.5 5 o-
s l 110,9 12.6 5 .. 7
-I 92, l1 23.9
I"'
93. I 22, 1 5 1 -
r used ring percolation test lntcrvnl,
4 6
s
8 10 14 6
TENSION, BAR
SUMMARY Qf CAflLLARY MOIS UR
RELATJONSHIP TEST RESULTS
WHITE MESA CT
FIGURE 3. 1
6 a
TENSION,
10 12 4
SUfv1MAf1Y Of CAf'IJ_LARY MOISTUR
RELATIONSHIP TEST R LILTS
WHITE MESA PROJECT
FI 3.5-~

Updated Tailings Cover Design Report

APPENDIX A.1.3
CHEN AND ASSOCIATES, INC.
1987
Atterberg
lings 28 6
Random 11 7
1
Specific
Gravity
2.85
2.67
es 1 i
% Passing
No. 200
46
48
(
Maximum
Dry Density
104.0
120.2
)
Optimum
Moisture
18. l
11.8

Updated Tailings Cover Design Report

APPENDIX A.1.4
GEOSYNTEC CONSULTANTS
2006
--·· --· GEdSYNTEC CONSULTANTS
Mr: Harold R. Roberts
Vice.·President,Corporate Development
International Uranium.(USA) Corporation
Independence Plaza, Suite 950
1050 Seventeen Street
Denver, Colorado 80265
Subject:· Stockpile Evaluation
Tailings Cell 4A, White Mesa Mill
Blanding, Utah
Dear Mr. Roberts:
. . .
l 1305 .Rancho Bert)ard~ Rd., Suite WI
San Diego, CA 92127 USA
Tel [phone] Fax (858) 674,6586
23 January 2006
GeoSyntec Consultants (GeoSyntec )is pleased to provide this letter report to
International . Uranium (USA) ·.·Corporation . (IUC) presenting the results of the
GeoSyntec soil stockpile evaluation at the White Mesa Mill facility (site) in Blanding,
Utah, This stockpile evaluation was performed in accordance with an .authorized
proposal.dated 5 October 2005.
INTRODUCTION
. . . The site is located at 6425 S. Highway 191, approximately 6 miles south of
the City ofBlanding, SanJuan County, Utah (Figure 1 ). The 5,415-acre siteis bordered
oh all sides by undeveloped land that is sparsely vegetated. The mill is utilized to
process ores alld alternate feed streams for the extraction and enrichment of Uranium
and other approved mat.erials.
BACKGROUND
In addition to marketable. product produced· during· the. milling. process,· ore
spoils (tailings) and highly acidic wastewaters are also generated as process by~
products. The tailings and wastewater are stored on site within constructed surface cells
that are lined with lowcpermeability soil (clay) .and geosynthetic. materials to mitiga.te
potential impacts to underlyi~g soils and ·groundwater. . Cell 4A. was ·a previously
constructed surface impound at the south end of the site (Figure 2) and. contained a
compacted clay liner and a geosynthetic liner.
SC0349/SC0349 -StockpileSamp.ltrRpt.060116
Mr. Harold R. Roberts
23 January 2006
Page2
PURPOSE
GEO$YNTEC CONSULTANTS
A new geosynthetic lining system may be installed in future ceU base liner
systems. In addition to the potential need for clay material for the construction of future
base liner. systems, clay material will be needed for final cover system installation
overlying closed cells .. Although many soil stockpiles exist on site, the material in
many of these stockpiles would not meet specific permeability requirements and are not
considered available for use.
Based on discussions between IUC and GeoSyntec during a 29 September
2005 meeting at the site, it was understood that clay soil may be available in two on-site
stockpiles. Clay liner materials are typically required to have an in-situ hydraulic
conductivity of lxl0-7 cm/sec or less. In order to prepare design drawings,
appropriately budget and plan for the future liner system construction, ·and .evaluate
final cover system soil materials, the two existing soil stockpiles with potentially-
suitable clay soil were characterized to evaluate. quality and consistency of the material.
In addition, a third on-site stockpile was sampled and evaluated at the request of IUC.
FIELD INVESTIGATION
As part of this· investigation, soil from thre1e existing on site soil stockpiles
was sampled. Before field work began, GeoSyntec reviewed and discussed
documentation for previous sampling events performed by others on many of the soil
stocl<piles on site ... Inagreementwith IUC,.stockpiles Cl,C2, and RF5 were identified
as potential stockpiles of clay material and were the. focus of the GeoSyntec field
evaluation and sampling event (Figure 2). Prior to mobilizing to site, GeoSyntec field
persoruie!prepared a project-specific health and safety plan (HASP) for the field work
to be performed.
The field investigation was performed for the three stockpiles on 10 and 11
November 2005, Soil stockpile evaluation was assisted by an IUGemployee operating
a Caterpillar 426B backhoe on 10 November 2005 and a Caterpillar front-end loader on
11 November 2005, Stockpile evaluation included the visual evaluation of stockpile
surface and excavated test-pits and the collection and transport of soil samples for off-
site laboratory geotechnical testing; General observations made during the. stockpile
evaluation by GeoSyntec field personnel, including surficial conditions of the three
stockpiles, were recorded on Daily Field Reports.(Appendix A).
On 10. November 2005 nine test-pits were excavated in soil stockpile Cl,
and seven test pits were .excavated in soil stockpile C2. One test pit in stockpile CZ and
two test pits in stockpile RF5 were excavated on ll November 2005. The approximate
test pit locations are shown on Figures 3 through 5. Test pits were excavated to depths
ranging from approximately 2 to 10 feet below ground surface (bgs) and from
approximately. 10 to 15 feet. long. Test pits excavated with . the backhoe were
SC0349/SCIJ349-StockpileSamp.LtrRpt.060116
Mr. Harold R. Roberts
23 January 2006
Page3
GEOSYNTEC ·CONSULTANTS
approximately 2 feet wide and those excavated with the loader were.approximately 6
feet wide. General. visual observations were made of the materials. excavated for each
test pit and the soils were logged in general accordance with the American Society for
Testing and Materials (ASTM) soil classification system, as outlined in ASTM standard
02488. Logs of the test pits are presented in Appendix A.
Representative soil samples were obtained from the soil cuttings in 5cgallon
buckets and shipped, via courier, to .the off-site geotechnical laboratory for further
testing and classification.
LABORATORY TESTING
Geotechnical · laboratory testing was. performed on selected soil samples to
evaluate the suitability of the soil within the stockpiles for use as clay liner. Laboratory
testing was performed by a GeoSyntec subcontractor, Excel Geotechnical Testing. The
following laboratory tests were performed in general accordance with ASTM test
methods on selected soil samples or on a composite of two or more like samples, as
selected by the GeoSyntec project manager:
• Grain size analyses (ASTM 0422)
• AtterbergLimits(ASTM 04318)
• Laboratory Compaction by Modified Effort (ASTM 01557)
• Permeability (ASTM 05084)
The laboratory test results are presented in Appendix B and summarized in
Table 1.
CONCLUSIONS AND RECOMMENDATIONS
Based on observations made during the .field investigation and review of the
results of the laboratory testing performed for this evaluation, the soil within each of the
three on-site stockpiles. (Cl, C2, and RF5) is s\litable for construction of the clay liner
or soil cover. The soil encountered within the test pits performed for the three
stockpiles was generally consistent (e.g. the. soils encountered in the test pits performed
in stockpile Cl were generally consistentthroughout stockpile Cl). The samples tested
from all three stockpiles, although different, are generally suitable for use as clay liner.
Based on. the results of·· laboratory . testing, the on-site . stockpile soils,
compacted to a minimum relative compaction of 90 percent using modified effort and a
moisture content of. at least 4 percent above optimum, should have a hydraulic
conductivity ofless than lxl0-7 emfs when subjected to a consolidation pressure of 30
pounds per square inch (consistent with anticipated bottom liner system normal
stresses).
SC0349/SC0349 -StockpileSamp.ltrRpt.060116
Mr. Harold R. Roberts
23 January 2006
Page4
GEOSYNTEC CONSULTANTS
GeoSyntec recommends that the soil to be used from the three sampled
stockpiles {Cl, C2, and RF5) as clay liner be compacted to a minimum relative
compaction of 90 percent of the maximum laboratory dry density, as determined in
accordance with ASTM D 1557 '-Laboratory Compaction using Modified Effort. Soil
compacted for the clay liner should be compacted at least 4 percent wet of the optimum
moisture content as determined in accordance withASTM D1557.
Should you have questions or require additional information regarding this
letter report, please contact us at [phone].
Attachments:
Sincerely,
Chad Bird, E.I.T. 020454
Enviro ental Engineer
~--
re oryT. Corcoran, R.C;E. 6020077-2202
ociate
Table 1 -Summary of Laboratory Testing
Figure 1 -Site Location Map
Figure 2 ..,. Site Plan
Figure 3 -Location of Stockpile Samples (Cl)
Figure 4 -Location of Stockpile Samples (C2)
Figure 5 -Location of Stockpile Samples (RF5)
Appendix A -Field Investigation
Appendix B-Laboratory Testing
SC0349/SC0349-StOckpileSamp.LtrRpt.<J601 /6
Table 1
Summary of Laboratory Testing
Stockpile Evaluation -Tailings Cell 4A
GeoSyntec Consultants
Permeabilit: Lab. Compaction Atterberg Limits Gradation Analyses
Sample ID Stockpile
ClSl-C
ClSl-E
ClSl-G Cl
Mix 11
Mix 12
C2Sl-C
C2Sl-F
C2Sl-G
Mix 21
Mix22
RF5-Sl-A
RF5-Sl-B
Notes:
C2
RF5
4.7E-07
2.lE-08
5.7E-07
3.2E-08
4.6E-08
3.3E-08
125.4
128.7
126.8
10.4
9.5
11.2
34
33
31
32
32
35
53
40
Mix 1 - a mixture of equal volumes ofClSl-C, ClSl-E, and ClSl-G
Mix 2 - a mixture of equal volumes ofC2Sl-C, C2Sl-F, and C2Sl-G
Mix 3 - a mixture of equal volumes ofRF5-Sl-A and RF5-Sl-B
15
15
14
15
14
17
16
14
i .... c ·-" ·-..... .,
"' i:i::
19
18
17
17
18
18
37
26
67.6
75.9
66.2
47.3
60.2
50.7
81.2
73.9
CL
CL
CL
SC
CL
CL
CH
CL
1 -Sample compacted to approximately 90 percent relative compaction at a moisture content 2% above optimum
2 -Sample compacted to approximately 90 percent relative compaction at a moisture content 5% above optimum
Page I of I
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GEoSYNTEC CONSULTANTS [~-----,,.,----,--------:::0--~J
DAILY FIELD REPORT DATE: II day Nov month OS' year
---
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SHEET NO. '"L OF Z. CGEOSYNTEC CoNSULTANTS FILE NO. 1-048-DFR ----
----GEOSYNTEC CONSULTANTS
Project Name: ::t.v c VJ M .M
Project Number: ::; ( c<.> <.f ') -o, ... f'l
Site: C'.!,Sl
TestPit!D: C.'.l-S·i:c.41
Test Pit Width: '"" 1 t"'
Test Pit Depth: ~ 4
EquipmentUsed: c'.A"i L!ZL(!, >ID"
Subcontractor:
Depth (ft)
TEST PIT LOG
Date: 1010cJ oS:
Weather: /./l .. S vt..iAJY
Test Pit Logged By: (,I, --'"-""----Samples Collected by: ( 6
Depth to Water (ft): .1'.JP.
Immiscible Layer: -¥-1-N-
Start/Stop Time: ~ "I·. 1 <i /
Description
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PID (ppm) Sample ID/Comments
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Samplers Signature:
----GEOSYNTEC CONSULTANTS
TEST PIT LOG
Sketch of Test Pit Location
Project Name: 'I .Jc W.,4tM
ProjectNumber: 5ll'3<r'l -ot --lb
Site: c; .1.$1
Test Pit ID: l: :1 SJ_ -~l
Test Pit Width: ~I Z 1 --'-'-----Test Pit Depth: ~ 3 r -~~-....,,-
Equipment Used: 61:"7 <./2 & ·~ HCC
Subcontractor: f'J .4
Date: iQNoJ 05"
Weather: .All . $ 1.1 ,, ,.; 'r'
Test Pit Logged By: __ c..;J;.._ __ _
Samples Collected by: CB
Depth to Water (ft): _IV_;;__·"'----
Immiscible Layer: -¥+*
Start/Stop Time:
Depth (ft) Description PID (ppm) Sample ID/Comments
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Samplers Signature: 1/z:_Q d/' ii '
----GEOSYNTEC CONSULTANTS
Project Name: :J._,•c i.,J llti /"\
Project Number: s· (o;, 4 ''. o i · Ol·
Site: CJ-S 1-
Test Pit ID: C:J.-51-(C)
Test Pit Width: -1-Z.
Test Pit Depth: ~ 2. 5
Equipment Used: C.41 1.w; i3 ff<,'.!
Subcontractor: ._,,,.
Depth (ft)
0 ,..._ ;,5-' fl< l)D1 ~ C( f!:;/.!.t;~t.J
TEST PIT LOG
Date: iC tvc·.J ~,5·
Weather: .ez. ::·u;...;.~''t'
Test Pit Logged By: ---'('-6"'----
Samples Collected by: C 6 --="----
Depth to Water (ft): NA
Immiscible Layer: .-¥+!>I-
Start/Stop Time:
Description
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PID (ppm) Sample ID/Comments
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----GEOSYNTEC CONSULTANTS
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TEST PIT LOG
Date: 112 NO-.! .:;:;;
Weather: /·LS.,,,,,,..;f
Sketch of Test Pit Location
Project Name:"2cc ')q ~ -o' o<::@
Project Number: S'caS4'7 -01.00
Site: C.1 S ;1. Test Pit Logged By: _ _,C-O"'·"----
Samples Collected by: Cb
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Test Pit ID: CJ'..51-&1
Test Pit Width: -"7'& --"'"""----Test Pit Depth: ~ 1.5
Depth to Water (ft): NI\
Immiscible Layer: Y"J'i't-
Start/Stop Time: Equipment Used: CM 4 2(, b blol!
Subcontractor: ,..J{>r
Depth (ft) Description
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----GEOSYNTEC CONSULTANTS
TEST PIT LOG
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Project Name: '?l. o >"I'? -01 -Ob Date: ID rJ o v b S
Project Number: J; Weather: M . .:,·vt'>.J-V "'--'--''-""'-"--'------~ Site: Ci. 5 .i Test Pit Logged By:
" Samples Collected by:
Test Pit ID: C:is1-Iii.
Test Pit Width:
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Equipment Used: CA1 <.fll 6 i-ki£
Subcontractor: !V .A
Depth (ft)
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Depth to Water (ft): JJ.4 -~----Immiscible Layer:--¥-1-N
Start/Stop Time:
Description
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Samplers Signature:
----GEOSYNTEC CONSULTANTS
Project Name: ::f_"vC. """"'"1.
Project Number: Seo 3~ '1 • C i ·· o (.
Site: Ci '5:1.
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Test Pit ID: (j')1. -%·
Test Pit Width: "'-o
Test Pit Depth: ~ 5
Equipment Used: Gl'f 4z(, G J.(o<t
Subcontractor: NA
Depth (ft)
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TEST PIT LOG
Date: iO tJov D:S
Weather: A. 5 '-'-"' w'-f
Test Pit Logged By: e.• --~---Samples Collected by: _.::C!J.o:.· __ _
Depth to Water (ft): f\J .. 4
Immiscible Layer: Y 1 J>I
Start/Stop Time:
Description
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PID(ppm) Sample ID/Comments
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TEST PIT LOG
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Date: If? (0 NOV Q'.)
Weather: M ~ 5LJN.Vi"'
Sketch of Test Pit Location
Project Name:-'6' :fl,)(._ w M..v\
Project Number: <SC c;>c.f "1 -"i -oft,
Site:
TestPitID: C1.51-@')
Test Pit Width: "'-IL
Test Pit Depth: ~ 3
Equipment Used:C-41' q U: 3 ikG
Subcontractor: ..; ,.o.
Test Pit Logged By: C2>
Samples Collected by: Cf:,
Depth to Water (ft): _ _.jJ_'.A __ _
Immiscible Layer:~.
Start/Stop Time: -------
Depth (ft) Description PID (ppm)
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Project Name:.~ ;kvC. w MM
Project Number: '.)co.>q'Lo1-ofii
Site: C 1. S.i
Test Pit ID: CJSJ. -tif>
Test Pit Width: .A-fl;;'.
Test Pit Depth: .-3 ------Equipment Used: C¥ l{ lC. 8 HDi':
Subcontractor: !\l .A
TEST PIT LOG
Date: Jo No V' o5
Weather: M. $ "·"'N'i
Test Pit Logged By: C6
Samples Collected by: cc. -=---
Depth to Water (ft): ;vA
Immiscible Layer: ~
Start/Stop Time:
Sketch of Test Pit Location
Depth (ft) Description PID (ppm) Sample ID/Comments
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----GEOSYNTEC CONSULTANTS
Project Name: '.!v c. wi>iM
Project Number: '?Co>'l"i -01-0te
Site: C$-51
Test Pit ID: Cj.<;j-fi)
Test Pit Width: ~IO 1
TEST PIT LOG
Date: //2 !JO\[ o,,;
Weather: ""-fUM.VY
Test Pit Logged By: M
Samples Collected by: Cf!:,
Depth to Water (ft): tJA ------Test Pit Depth: ~ <, ' Immiscible Layer: ~
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Depth (ft) Description
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PID (ppm) Sample ID/Comments
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----GEOSYNTEC CONSULTANTS
Project Name: ;:r'.u C VJ"" M
Project Number: S (o 3'i'l -o' -olO
Site: C251 ~)
Test Pit ID: c:l51.-@
Test Pit Width: _,.._; D r
Test Pit Depth: ,.._. 5 1
Equipment Used: C~1 l/ U,, ()
Subcontractor: !IJ.A
Depth (ft)
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Date: /o 1vov bS
Weather: /I'\. 7v,; AJY
Test Pit Logged By: C~
Samples Collected by: e.o -----
Depth to Water (ft): iJA
Immiscible Layer: ~
Start/Stop Time: -------
Description
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TEST PIT LOG .. @ el<C (..OC. c;d> Sketch of Test Pit Location
Project Name: ::r v(. ·w M All
ProjectNumber: SC03lf')·Ot-o(,,
Site: (z;Sj,
Test Pit ID: CZ,; 1 -(f,)
Test Pit Width: "-/ o '
Test Pit Depth: .-'-( I
Equipment Used: ('J!,1 4 zc;. 8 !fort
Subcontractor: tJ .A
Date: /C 10o·J c 5; i/,.,,01.1 o5
Weather: /11. 5vrJ NY
Test Pit Logged By: C,5
Samples Collected by: _ _,c"'.c!!,"---
Depth to Water (ft): -~A-IA~--­
Immisei\Jle LayeL 'f tN
Start/Stop Time: --------
Depth (ft) Description PID(ppm)
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Sample ID/Comments
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----GEOSYNTEC CONSULTANTS
TEST PIT LOG
e::><C. lD '" o•J c5 1 '-"'":.E:l>... Sketch of Test Pit Location
Date: i I N <'. ·J :J S <Ji,) 1=;==:=:=::==::===:=:===1 Project Name: Tue WMM
Project Number: 5l(D3i.f"1 -Ci, Ch
Site: Cl S1
Weather: /Gt.Jt:J: M ,5 ... If .;upJ : «. "f5'
Test Pit Logged By: C<l
Samples Collected by: c6 1f:--S ;;;;:-.\ TestPitID: ti C2S::I -~
Depth to Water (ft): "3 A Test Pit Width: "'-t 5
Test Pit Depth: ,_ Lj. 5 Immiscible Layer: Y"ffl
Start/Stop Time: Equipment Used: C!\·1 <t 2~(\ H~C: -------Snbcontractor: ...i "'
Depth (ft) Description
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Sample ID/Comments
----GEOSYNTEC CONSULTANTS
TEST PIT LOG
{J;XC j() No·• ,s I Lo(,6<£1>
Date: I I :'-.le -.; O <:;
Sketch of Test Pit Location
Project Name: :Z: JG WM!"'!
Project Number: $COJL/'ii-c I -Ok-
Site: C 1. S :l.
Weather: io.No\I; AA. S. ; tr ;i. •• 1.1~·J~ oc. .·ts
Test Pit Logged By: ('3
Test Pit ID: C l, S ".1--(\$;
Samples Collected by: G3.
Test Pit Width: ,.._a--; Depth to Water (ft): NA
Test Pit Depth: ~ ~' Immiscible Layer:-''l;;:.--:;:;'1N<f:'.::-----
Equipment Used: 'iii; 13 !--1,,.c: ( ''°'1) Start/Stop Time:
Subcontractor: NA
Depth (ft)
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Description
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----GEOSYNTEC CONSULTANTS
TEST PIT LOG
Project Name: :1vL IN/Ill.fa\
ProjectNumber: S<csY"i -Ct-o0
Site: ( <. $ .i
Date:&{_, l&uc'Jc.;,li:Ebl!P It 1\JC'.f D'S'
Weather: fO,..ic··J ·MS, 1t 1\io'./: CC., fS
TestPitID: ci~·1~&'
Test Pit Width: ·~ t l ' -'-'-"----Test Pit Depth: ~ [., • --~_,.-,....-Equipment Used: C!.-1 4[<;,(!, i/oC
Subcontractor: 1.JA
Depth (ft)
Test Pit Logged By: OJ.
Samples Collected by: Co
Depth to Water (ft): j\.)A
Immiscible Layer: ~
Start/Stop Time:
Description
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PID(ppm) Sample ID/Comments
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----GEOSYNTEC CONSULTANTS
Project Name: J:vC-WM fl/\
Project Number: 5c.o'3'1 c, -01. Oi?
Site: C 'Z. 5 ·'.l.
Test Pit ID: C2.S ;J -ct>
Test Pit Width: -'r.'-'r..:;,;_, __ _
Test Pit Depth: -jC"
Equipment Used: (A-1 4 2c. IS /./c1£
Subcontractor: ,..., A
TEST PIT LOG
Date: £...\(.:. /V Nc-J c5 . l.«.-£1Eb ii NOV'-)
Weather: i(}Ny\.': ,., ..... 5, u Nt;\t~ \;·C? '1.S
Test Pit Logged By: C!J. ------Samples Collected by: --"cg,,"'. __ _
Depth to Water (ft): NI">
Immiscible Layer: -¥+N
Start/Stop Time:
Sketch of Test Pit Location
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Depth (ft) Description -S."i.i l) ( ~) PID (ppm) Sample ID/Comments
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----GEOSYNTEC CONSULTANTS
£,.;.
Project Name:~ :C,J(, W/::\.M
Project Number: SU· Ji;'{ -· c ; .. tC;
Site:
TEST PIT LOG
Date:
Weather: (X·J{U~ 1, --(,..Sf!r(JV\
Test Pit Logged By: ~-'2>
TestPit!D: CZ.~i-@':
Test Pit Width: ~10' Depth to Water (ft): _ _.tl_'A-'·---
Samples Collected by: ct>
Test Pit Depth: ,,._JO Immiscible Layer: -¥-f-N-·
Equipment Used: ff\:+ 'ilf •'tik @)Start/Stop Time:
Subcontractor: 1Jt\ ~ LoAl>(lt
Depth (ft) Description
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-_._..., ...._ .. J-.iliiimt... GEOSYNTEC CONSULTANTS
SOIL SAMPLE LOG
PROJECT: -:r v (.. \..J :41 -r<.: ,NI C, -A MI/....'-
LOCATION: p, <---"'"" t:> t, I ( .. , U ('A t-1
DESCRIPTION: C.LA-! Sf<>( f-<. t71 t.<: SA"' f'L AS C,
PROJECT NO.: Sc C·C:'-1? TASK NO.: Cl. de
YEAR: '2= s;-·
MATERIAL TYPE:_,,0~.~"-'-A'-1-+--"""-=->.;_~~~~~~~~~~~~~~~~-~~~--~-~~~----~--~-
SITE OFF-SITE LAB SOURCE
(LOCATION/DEPTH)
DATE
SAMPLED
(day/mo)
SAMPLE SAMPLE
NO. NO.
c.JSJ-A
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VISUAL DESCRIPTION
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6acwµtSH -fAi.l $A" l>
u:i,GEO SYNTEC CONSULTANTS FILE NO. 2-01-SSL
TEST
METHODS QA ID
. .......... '. ' .................................... -~~{;'_ ..
....... :.::::.:::.::·.::·:::::::::::::::·:::::::::::::~:: ....................................................... !(L] ....
~B . . . . . . . . . . . . . . . . . ' . . ' . ' . . ' . . . . . . . . . . . . . . . . . . . . . . . . . . . . ' . . . . .
c..a .:::::::::::::::::::::::::::::::::::::::::::::::::::.:~'-;:::
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. ..................................................... @ .. .
. ••.• .•.• •...•. •••. .•. ••. .•• • ••••••.•.• ·· ..• ··~··
.. ·· .. ·:::::::::::::::::::::::::::::::::::·::::.:::::::~::
i z. SHEET NQ, __ or __
-... ._, -GEOSYNTEC CONSULTANTS ...........
SOIL SAMPLE LOG
PROJECT: :r vc.. wf-1 •'I~ fl'lcSA fat 1 t..L
LOCATION: ~LA"-1\)1 NC. u "<l'r..f
DESCRIPTION: (LAY 51oCK Pi Lt 5'4MPLIJ\JG.
MA TERI AL TYPE: C<.4Y
SITE OFF-SITE LAB
SAMPLE SAMPLE
NO. NO.
CZ5.j,:-e. c F..
G.
1!..fs-91-A.
~FSS1 -/3. ..
VISUAL DESCRIPTION
"GroSnnrc CONSULTANTS FILE NO. 2-01-SSL
SOURCE
(LOCATION/DEPTH)
DATE
SAMPLED
(day/mo)
PROJECT NO.: Sco~<.J'l TASK NO.: 61-0"'
YEAR: 2ro'>
TEST
METHODS QA ID
ii r.JO~ ........ ··········································· .. @. ·······························································~···
. .. ::·.::::·:::::::::::::··:::::::::::::::::::·::::::::::W::: ···················································~··· /
. . . . . . . . . . . . . . . . . . . . . . . ' . ' ~ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ' . . . '
2. 2-SHEET NO. __ OF __
-A-._j
...... GEOSYNTEC CONSULTANTS
PROJECT: :L.Jc_, (..,_) \{ .t 1" e' ,MEY.. /VI-ILL.
0.-J • 5 t'"fE:" cu+Y ~:..r oe.J<:f? 1 LES
LABORATORY TEST REQUEST
PROJECT NO.: $(0 '3'i "'! TASK NO. or -o<e
SOURCE: AP PUCA TION: ----------LAB SAMPLE NO.:
SHIPPER:
TASK
REMARKS:
uiOS REQUESTED BY: Ci-Mti /2, r;e,D
AS
RECEIVED PERCENT GRAIN SIZE
MO!STURt PASSING ASTM D 422
CONTEST NO. 200
~
\!;! w °' w 0 "' "' ~ ASTM ASTM I
D 2216 0 1140
(:>:) (:>:)
v
Pl. t:. fl:~ ~ Uo 1.-T) ,.----
A TTEBERG LIMITS LOI
ASTM D 4318 I
SOIL I
CLASSIFJCA TION I
LL PL Pl ASTM D 2487
IASTM c 311
(:>:) (:>:) ( ) (")
v -_.
PERFORMANCE TEST 0
DATE:
<'.~1.:Ss1:1~-~-~..Kt;.lc.1 t:., C..
-----SITE SAMPLE JD.:c.25::1--. C1 ,~, 6
ft(;'-S:1-A, ~
COMPACTION HYDRAULIC CONDUCTIVITY
CARBO ASTM D 698 c ASTM 0 5084 'X ASTM D 1557 :X ASTM D 2434 CONT. c
I A I B I c I D I TUBE SAMPLE c
REMOIDED SAMPLE )<; ASTM 0 4710
RELCQYP.,. __ lC W=W,,.1--(XJ
'Y,= (pct); .,,._ (:t)
MAX DPT. DRY MOIST. K (cm/?1ec)
ORY MOIST. UNIT CONT. ol
ASTM UNIT WT. CONT. WT. crc=-<••1) 03042
(:t) (pcf) (:>:) (pct) (%) 1-
v /
CONFORMANCE TEST 0
DISTRIBUTE RESULTS TO: _,,fl:""">o:.:!._,1!,,N,_,'·i'-'£'--C.. __ (i,._C:"''""'f'-'C."-J..__curnT ___________ SITE ___________ DmcE
©GEOSYNTI:C CONSULTANTS FILE NO. 2-23-LTR
lSJ Excel Geotechnical Testing Project Name: IUC White Mesa Mill
"Excellence in Testing" Project No: 165
941 Forrest Street, Roswell, Georgia 30075 Site Sample ID: ClSl-C .
Tel: [phone] Fax: [phone] Lab Sample No: K236
ASTMD??l6,,Dll-IO, SOIL INDEX PROPERTIES Moisturr Conltat, Grain Size. Attubcrg
D 4??, D 8~. ClJ6 Limi11, Clanillurion
~ Coarse Fine Co~ Medium Fine Silt I Clay
g Cobbles
~ Gravel Sand Fines
U.S. Standard Sieve Sizes and Numbers
12" 3" 2" 1.5" I "JI-I" 112"3/8" #4 #10 #20 #40 #60 #100 #200
• • I I I I I I I • • • • • • • ' ' 100 -..
90 \ ~
~ 80
~ -70 "' ·~ ~ 60
E 50 .. .. c 40 "' I I -c 30 .. I I I I " I I .. I .. 20 ... I I I I I 111111 I II I I I
10 ~I i I I 1 I I I I
I! 11
I I ! I I i ' 1111 ! ! i i I I 'II I 11 I ! I I ' I I I ' I, I ,q 0
1000 100 10 I 0.1 0.01 0.001 0.0001
Grain Size ( mm )
Sieve No. Size(mm) o/,, Finer Hydrometer 80 Particle Diameter o/o Finer
3" 75 IOO.O fmm\ 70
2" 50 100.0 'U"Line
1.5'' 37.5 IOO.O 60
I" 25 100.0 0: CHorOH -50
3/4" ~ "A"line 19 100.0 .. .s 40 3/8" 9.5 IOO.O ~ h #4 4.75 100.0 :g 30
#IO 2.00 99.9 Gravel(%): ~
20 MHorOH #20 0.850 99.7 Sand("/,.): 32.4
#40 0.425 99.2 Fines(%): 67.6 IO .
#60 0.250 95.6 Silt(%): h<fi.orOL
0
#100 0.150 88.8 Clay (0/o): 0 10 20 JO 40 50 60 70 80 90 100 110 120
#200 0.075 67.6 Liquid Limit (LL)
Coeff. Unif. (Cu):
!specific Gravity(-): I I Coeff. Cun·. (Cc):
Client Lab Moisture Fines Content Atterberg Lim.its Engineering Classification
Sample Sample Content <No.200 LL PL PI
ID. No: ( % ) (%) ( -) ( -) ( -)
CISl-C K236 9.6 67.6 34 15 19 CL -Sandy lean clay
Note(s):
(SJ Excel Geotechnical Testing Project Name: !UC White Mesa Mill
"Excellence in Testing" Project No: 165
941 Forrest Street, Roswell, Georgia 30075 Site Sample ID: CISl-E ' Tel: [phone] Fax: [phone] Lab Sample No: K237
ASTM D lll&. D ll.«I. SOIL INDEX PROPERTIES MolIDl~ Cvnlfllt, GnUa Sin, Att~rbn-g
D4l2,D8~,CIJ6 Limit,, aauifkatioa
• Coarse Fine Coarse Medium Fine Silt I Clay ~ Cobbles 8 ~ Gravel Sond Fines
U.S. Standard Sieve Sizes and Numbers
12" 3" 2" LS" 1 'l/4" 1/2"3/S" #4 #IO #20 #40 #60 #100 #200
' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' IOO --' 90
~
';!. 80 --70 ... "" ...
iii": 60 ,.., ... 50 .. .. c 40 o;: -c 30 .. I I I ... .. ~ .. 20 .. " I I 111 ! I 11 I I I I I , i 11
I I I I IO 1-I I I ' ' ' :Ii I ,,I I I
'i I ! I I " I j I I ''!' II I I 111i11 i I II ! I I I ! I I .!!1 I I I . I I 0
IOOO 100 10 I 0.1 0.01 0.001 0.0001
Grain Size ( mm )
Sieve No. Size(mm) %1Finer Hydrometer 80
Particle Diameter 0/o Finer
3" 75 100.0 (mm} JO >
2" 50 100.0 •un Line
1.5" 37.5 100.0 60 > -
l" 25 100.0 0:: CH or OH -50 " " ~A" Line 3/4" 19 100.0 ~ ,!i 40
3/8" 9.5 100.0 "" b '.!:! 30 #4 4.75 100.0 ~ #l-0 2.00 100.0 Gravel (o/o): 20
#20 0.850 99.9 Sand (o/o): 24.l MHorOH
#40 0.425 99.7 Fines (o/o): 75.9 10
#60 0.250 98.7 Silt (o/o): MLorOL 0 .
#100 0.150 95.3 Clay("/.): 0 IO 20 30 40 50 60 70 80 90 100 l!O 120
#200 O.Q75 75.9 Liquid Limit ( LL )
Coeff. Unif. (Cu): I specific Gravity(-): I I Coeff. Curv. (Cc):
Client Lab Moisture Fines Content Atterberg Limits Engineering Classification
Sample Sample Content <No. 200 LL PL Pl
ID. No: ( %) ( % ) ( -) (-) (-)
CISl-E K237 10.3 75.9 33 15 18 CL -Lean clay with sand
Note(s):
(SJ Excel Geotechnical Testing Project Name: !UC White Mesa Mill
"Excellence in Testing" Project No: J65
941 Forrest Street, Roswell, Georgia 30075 Site Sample ID: CJSl-G
.
Tel: [phone] Fax: [phone] Lab Sample No: K238
ASTMDl216.D 11-IO, SOIL INDEX PROPERTIES Mohtun:: Cmtlmt, Grala Sb~, Atltrbefl!:
D.tll,Da.q,Ct.36 Limih. 0-lfk•lloa
• Coarse Fine Coarse Medium Fine Silt I Cloy ~ Cobbles ]
~ Gravel Sru>d Fines
U.S. Standard Sieve Sizes and Numbers
12" J" 2"1.5" 1'3/4" 1/2"318" .. #10 #20 #40 #60 #JOO #200
' ' ' ' ' I f I I ' ' ' ' ' ' ' ' '
100
90
~~
~ \ ~ 80 • --70 ... ·r ~ 60 ,.,
,Q
~ 50
~ c 40 o;:
I -c 30 ~ 5 11 I I ~ ~ ' ~ 20 I .. ' I' I ! ' Ii I I I I I ,I I I I ~ i I I JO Ii . I I I I" , ' I ! i i
· 1 I I i [iii I I! I 111 I I ! I
11 I i I ! 1111 I I I II 0 .,:: I ' . 11' ! I ,!
lOOO JOO lO l O.J 0.01 O.OOJ 0.0001
Grain Size ( mm )
Hydrometer 80 Sieve No. Size (mm) o/,. Finer Particle Diameter 0/,. Finer
3" 15 100.0 fmm\ 70
2" 50 JOO.O "U" Line 60 1.5" 37.5 100.0 ~
I" 25 100.0
;: CH or OH -50 • 314" 19 100.0 • "A"Line ~ .s 40
3/8" 9.5 99.5 l;> h #4 4.75 99.5 :~ 30
#10 2.00 99.2 Gravel (o/o): 0.5 £
20
#20 0.850 98.8 Sand(%): 33.3 MHorOH
#40 0.425 97.4 Fines(%): 66.2 JO -
#60 0.250 93.2 Silt(%): . t.Il.orOL
0
#JOO 0.150 88.2 Clay(%): 0 10 20 30 40 so 60 70 80 90 JOO 110 120
#200 0.075 66.2 Liquid Limit ( LL )
Coeff. Unif. (Cu): I specific Gravity(-): I I Coeff, Curv. (Cc):
Client Lab Moisture Fines Content Atterberg Limits Engineering Classification
Sample Satnple Content <No. 200 LL PL PI
ID. No: (%) (%) (-) ( -) ( -)
CISl-G K238 8.0 66.2 31 J4 17 CL • Sandy Jean clay
Note(s):
ASThll>lll6.DIUD.
D .,111, D a~. CU6
12"
' '
100
90
~ 80 -~ iii 70 ·;;
=::: 60
~ 50 ~ " r£ 40
~ = 30
.. g
20
:j
' ~! I I
IOOO
Sieve No. Size(mm)
3" 75
2" 50
1.5'' 37.5
l" 25
3/4" 19
318" 9.5
#4 4.75
#10 2.00
#20 0.850
#40 0.425
#60 0.250
#100 0.150
#200 O.Q15
!specific Gravity(~):
Client
Sample
ID.
C2Sl-C
Note(s):
I
Excel Geotechnical Testing
"Excellence in Testing"
941 Forrest Street, Roswell, Georgia 30075
Tel: [phone] Fax: [phone]
Project Name: IDC White Mesa Mill
Project No: 165
Site Sample ID: C2Sl-C
Lab Sample No: K239
SOIL INDEX PROPERTIES Moisture Coolml, Grain Siu, Anerhtrg
LimitJ, Oimtf"IC'lttion
Cobbles
!
Coarse Fine Coarse Medium I Fine
Gravel Sond
U.S. Standard Sieve Sizes and Numbers
3" 2" 1.5" l'S/4" 111"318" #4 #JO #20 #40 #60 #100 #200
I I I I I I I I I I I I I I
1111 i I '
I I I ill i I I I" I . 11 I 11
\
\
'
L
100 10 0.1
% Finer
100.0
100.0
100.0
100.0
100.0
99.4
99.l
98.8
98.5
97.3
89.l
67.4
47.3
I
Grain Size ( mm )
Hydrometer
Particle Diameter % Finer
Jmm)
Gravel(%): 0.9
Sand(%): 51.8
Fines (o/o): 47.3
Silt(%):
Clay (0/o):
Coeff, Unif. (Cu):
Coeff. Curv. (Cc):
~
ii:
~ • • "" ..
f • 0:
80
70
60
50
40
30
20
10
0
0
Silt I Clay
Fines
. .
I I
I I 1111 I
111 I I !ii I
0.01 0.001 0.0001
"U" Line
CHorOH
"A" Line
h fo,frlorOH
, -Ml..orOL .
10 20 30 40 50 60 70 80 90 100 110 120
Liquid Limit ( LL )
Lab Moisture Fines Content Atterberg Limits Engineering Classification
Sample Content <No. 200 LL PL PI -
No: (%) (%) ( -) ( -) ( -)
K239 8.5 47.3 32 15 17 CL • Saody leao clay
(SJ Excel Geotechnical Testing Project Name: !UC White Mesa Mill
"Excellence in Testing" Project No: 165
941 Forrest Street, Roswell, Georgia 30075 Site Sample ID: C2Sl·F
-
Tel: [phone] Fax: [phone] Lab Sample No: K240
ASTM D l216, D lUO, SOIL INDEX PROPERTIES Mobtun Content, Grain Siu, Atterberg
D4ll,Dll~.Cll6 Lhnto, a-tfk11tlon
.li Coarse Fine Co= Medium Fine Silt I Clay
8 Cobbles
M Gravel Sand Fines
U.S. Standard Sieve Sizes and Numbers
12" 3" 2"1.S" l'S/4" l/2"3/8" #4 #JO #20 ... #60 #IOO #200
' ' I I I I I I I ' ' ' ' ' ' ' ' ' IOO
90 ..
~
'$. 80 \
~ \ -70 ... . !!' .. 60 ~ .., ... 50 ... .. = 40 ~ I -= 30 ..
I I 11 I I 11 I I ... ... I .. 20 I ... I I! I I I ! f I ! I ' 1,, 1 I I I I I I I ' I I IO ,I i I 1 l I
I I ! l j ! 111 i I ' I 1111 I I I I I I !, I ! 0
1000 100 IO l O.l O.o! 0.00! 0.000!
Grain Size ( mm )
Sieve No. Size(mm) "lo Finer Hydrometer 80 Particle Diameter "lo Finer
3" 1; 100.0 (mm\ 70 ' 2" 50 100.0 "U"Une
1.5'' 37.5 100.0 60 '
I" 25 100.0 s: CH or OH -50 " 3/4" 100.0 • "A" Line 19 .,, ,.s 40
3/8" 9.5 98.6 ?;> b :5:! 30 #4 4.75 97.8 ~ #10 2.00 97.3 Gra .. ·el (0/o ): 2.2 20 ' #20 0.850 97.1 Sand (o/o): 37.6 MHorOH
#40 0.425 96.7 Fines (o/.~: 60.2 10 ' -
#60 0.250 92.3 Silt ('Yo): ~ll.orOL 0
#100 0.150 78.2 Clay{%): 0 10 20 30 40 50 60 70 80 90 100 110 120
#200 0.075 60.2 Liquid Limit (LL )
Coeff. Unif. (Cu):
!specific Gravity(·): I I Coeff. Curv. (Cc):
Client Lab Moisture Fines Content Atterberg Limits Engineering Classification
Sample Sample Content <No. 200 LL PL PI
ID. No: ( %) ( %) ( -) ( -) ( . )
C2S!-F K240 8.4 60.2 32 14 18 CL • Sandy lean clay
Note(s):
SJ Excel Geotechnical Testing Project Name: IUC White Mesa Mill
"Excellence in Testing" Project No: 165
941 Forrest Street, Roswell, Georgia 30075 Site Sample ID: C2Sl-G
Tel: [phone] Fax: [phone] Lab Sample No: K241
ASTM D 2llli, D IHU, SOIL INDEX PROPERTIES M<1btun-Contn>t. Gnlin Sitt, AtkJWrg
D.t:n. D 8.-\1, CJJ6 Lindo, Claeltklltlon
t Coarse Fine Couse Medium Fine Silt I Clay
Cobbles
"' Gravel Sand Fines
U.S. Standard Sieve Sizes and Numbers I 12" J" 2" 1.5" 1'3/4M l/2"318" .. #10 #20 #40 #60 #IOO #200 . . I t I I I ' ' ' ' ' ' ' ' ' ' ' 100 '
90 ~
~ \
~ • 80 -\ -70 ... \ .. ·;;
~ 60
>. ...
~ 50
" " 40 • i.: I = 30 " I 1 I IP I :: " 20 ,1 I c. I. I I! I 111 i I II I I I I .I I I 1
I I I I I I 11 . I I I I I I ! I IO I • I ·i1 I I l 111 i I !ii I I! 1 .ii! I ! ! 111 ii I I iii I ! ,, i ! 11 ! ljj l 0
IOOO 100 IO I 0.1 0.01 0.001 0.0001
Grain Size ( mm )
Sieve No. Size(mm) % Finer Hydrometer 80
Particle Diameter 0/o Finer
-· 75 100.0 Imm\ 70 >
2" 50 100.0 "U" Line
l.5M 37.5 100.0 60
l" 25 100.0
;:: CH or OH -50 • • "A"line 3 4H 19 100.0 .. .s 40
3 8" 9.5 100.0 f fa =-! 4.75 100.0 30 '
=10 2.00 99.7 Gravel (0;..): ~
20 > MHorOH =10 0.850 99.4 Sand(%): 49.3
=-1() 0.425 99.0 Fines (0/o): 50.7 10 > -'
=60 0.250 91.2 Silt ('Yo): 0 . ' . .~~'?rf?L '
#100 0.150 69.3 Clay(%): 0 10 20 30 40 50 60 70 80 90 100 110 120
•:oo 0.075 50.7 Liquid Limit (LL )
Coeff. Unif. (Cu):
!specific Gravity(-): I I Coe-ff. Curv. (Cc):
Client Lab Moisture Fines Content Atterberg Limits Engineering Classification
Sample Sample Content <No. 200 LL PL PI
ID. No: (%) ( %) ( -) ( -) ( -)
C2Sl-G K241 9.9 50.7 35 17 18 CL -Sandy lean clay
Notet.s):
~ Excel Geotechnical Testfr1g Project Name: !UC White Mesa Mill
"Excellence in Testing" Project No: 165
941 Forrest Street, Roswell, Georgia 30075 Site Sample ID: RFS-Sl-A
.
Tel: [phone] Fax: [phone] Lab Sample No: K242
ASTMD:?ll6.Dll.-O, SOIL INDEX PROPERTIES Moistun Contni.t, Gnln Sb.c, Atterbcl")l
D .J:?l, P 11.,q, Cll& LlmlH, CH,iftcatlon
~ Coarse Fine Co~ Medium Fine Silt I Clay
~ Cobbles
Gravel Sand Fines
U.S. Standard Sieve Sizes and Numbers
12" 3" 2· 1.5" I '3/4" 112"Jlr 114 #10 #20 #40 #60 #100 #200
' ' ' I I I I I I ' ' ' ' ' ' ' ' ' 100
I ....
90
~ ' ~ 80
~ -70 -= ·~ ~ 60
""' -" so -.. = 40 ;;: I I -= 30 ..
I I 1 11 ~ 1, -! I I .. 20 '· .. ' I I I ' I ,
: 11 i·i I
11 ! I 11 I ' •I! ~1 I I I I I I I I I Ii I 10 ' ' ~:I ! I I !Ii 11 I i iil 'i j I I 111 i I I!! 11 I 111 i I I iJ ! ' : ~ I l j ! ' .I] I 0 ; "
1000 100 10 l 0.l 0.01 0.001 0.0001
Grain Size ( mm )
Hydrometer 80 Sieve No. Size (mm) 0.4. Finer Particle Diameter "lo Finer
3" 75 100.0 tmm) 70 ' 2" so 100.0 "U" Line
1.5" 37.5 100.0 60
I" 25 100.0 0: CH or OH -50 ~ "A" Line H" 19 100.0 .,,
.5 40
3/8" 9.5 100.0 f ~· #4 4.75 99.9 30
#JO 2.00 99.7 Gravel(%): 0.1 20 ' MHorOH #20 0.850 99.1 Sand(%): 18.7
#40 0.425 98.I Fines(%): 81.2 10 '
#60 0.2SO 95.7 Silt ("/11): ~Il. orOL . 0
#100 0.150 89.7 Clay ("/o): 0 10 20 JO 40 so 60 70 80 90 100 110 120
#200 0.075 81.2 Liquid Limit (LL)
Coeff. Unif. (Cu):
lspeeific Gravity(-): I I Coeff. Cun. (Cc):
Client Lab Moisture Fines Content Atterberg Limits Engineering Classification
Satnple Sample Content <No. 200 LL PL Pl
ID. No: ( %) ( %) ( -) ( -) ( . )
RF5-Sl-A K242 9.9 81.2 53 16 37 CH-Fat clay with sand
Note{s):
(SJ Excel Geotechnical Testing Project Name: !UC White Mesa Mill
"Excellence in Testing" Project No: 165
941 Forrest Street, Roswell, Georgia 30075 Site Sample ID: RF5-Sl-B
Tel: [phone] Fax: [phone] Lab Sample No: K243
A.STM D %116, D 11.m, SOIL INDEX PROPERTIES Molm1re Conti:nl, Gniin Size. Attcriicrg
D .tll, D 11~. CU6 Llmi.111, Cbl1111fk:11ion
• Coarse Fine Coarse Medium Fine Silt I Clay ~ Cobbles g
~ Gravel Sand Fines
U.S. Standard Sieve Sizes and Numbers
12· J• :r 1.s• 1'314" 112''3/8" #4 #10 #20 #40 #60 #JOO #100
' ' I I I I I I I ' ' ' ' ' ' ' ' ' 100 --..
90
""
~
';/! 80 --70 ... bl> ·;;
~ 60
~ .0
~ 50
" = 40 ;>: -= 30 " " ~ " 20 ' ... I ' I I I I 111 •
1111 I 10 I 1 I I I I
' ' I j i 11 11 I I 1111 11 I 11 I I 11,
0
1000 100 10 1 0.1 0.01 0.001 0.0001
Grain Size ( mm )
Sieve No. Size(mm) 0/o Finer Hydrometer 80
Particle Diameter o/o Finer
3" 75 100.0 fmm) 70 ' 2" 50 100.0 "U" Line
1.5'' 37.5 100.0 60 '
I" 25 100.0 ;:: CH or OH ~ 50 ~ "A" Line 314" 19 100.0 .. .s 40
3/8" 9.5 100.0 ·€ h #4 4.75 100.0 ~ 30
#10 2.00 99.7 Gravel(%): 20
#20 0.850 99.3 Sand (0/o): 26.1 t.lliorOH
#40 0.425 98.I Fines (o/o): 73.9 10
#60 0.250 94.4 Silt(%): MLorOL 0
#100 0.150 84.2 Clay(%): 0 10 20 30 40 so 60 70 80 90 100 110 120
#200 0.075 73.9 Liquid Limit ( LL )
Coeff. Unlf. (Cu):
Jspecific Gravity(~): I I Coeff. Curv. (Cc):
Client Lab Moisture Fines Content Atterberg Limits Engineering Classification
Sample Sample Content <No. 200 LL PL PI
ID. No: (%) (%) ( -) ( -) ( -)
RFS-Sl-B K243 9.6 73.9 40 14 26 CL -Lean clay with sand
Note(s):
ASThl D 1557
130
125
" " " 120
" " " " 115
110
~ .... .. i::. ~ 105 --= .. ·;;
~ -c :::>
Co i::::
Note(s):
-
" --100
95
90
85
80
75
70
0
Client/Site
Sample
ID.
Mix I*
Excel Geotechnical Testing Project Name: IUC White Mesa Mill
"Excellence in Testing" Project No: 165
941 Forrest Stree~ Roswell, Georgia 30075
Tel: [phone] Fax: [phone]
Client Sample ID: Mix l *
Lab Sample No: K265
COMPACTION MOISTURE-DENSITY RELATIONSHIP
.
~ 1--Gs=2.60 I
l/Gs~2.6; I Curves of 100% Sanuation I
I ~ v~,~~75 for Specific Gravity Values
-\; ~
~
~ ~
~ I I I
I I ~ i I ' I i I I I I
I ~ ! I
I I
I I~ .~
~ ~
Modified -i\<lethod B
I
I I
I I
l
I
I '
I
~ .»._
.
5 10
Lab
Sample
No:
K.265
15
... .
20 25 30 35 40
Moisture Content ( % )
Maximum
Dry Unit Weight
( pcf)
125.4
Optimum
Moisture Content
( %)
10.4
~
45 50
Remarks
*A mixture of equal volumes ofC!Sl-C, ClSl-E and CISl-0.
ASTMD 15!i7
130
125
' ' ' ' 120
' '
" 115
110
,-., .... " c. ._, 105 ... .:: CJ) ... :s: ...
·= >::>
t'
A
Note(s):
--, -100
" --
95
90
85
80
75 -
70
0
Client/Site
Sample
ID.
Mix2*
Excel Geotechnical Testing Project Name: lUC White Mesa Mill
"Excellence in Testing" Project No: 165
941 Forrest Street, Roswell, Georgia 30075
Tel: [phone] Fax: [phone]
Client Sample ID: Mix 2*
Lab Sample No: K266
COMPACTION MOISTURE-DENSITY RELATIONSHIP
I ~ Gs=2.60 I (' i/ G,-,.65 I Curves of 100% Saturation l for Specific Gravity Values • ~ /-~,:~,,
~ ~
~
~ ~
I ~\ I
I ~ !
I I
!
I I
i
I ' I
I ~ I
I ~ I ~ I
~ ~
Modified -Method B
I
I
I ' ~
5 10
Lab
Sample
No:
K266
15
. ...
20 25 30 35 40
Moisture Coutent ( % )
Maximum
Dry Unit Weight
( cf)
128.7
Optimum
Moisture Content
(%)
9.5
~ • ' • t-
45 50
Remarks
*A mixture of equal volumes ofC2Sl-C, C2Sl-F and C2Sl-G.
I '.· Excel Geotechnical Testing
~-.c., "Excellence in Testing"
941 Forrest Street, Roswell, Georgia 30075 . ..,. . Tel: [phone] Fax: [phone]
FLEXIBLE WALL PERMEABILITY TEST '1>
ASTMD5084 *
Project Name: rue White Mesa Mill
Project Number: 165
Client Name: GeoSyntec Consultants
Site Sample ID: Mix 2* (See Note 2)
Lab Sample Number: K266
Material Type: Soil
Specified Value (cm/sec): NA
Date Test Started: ll/27/2005
Specimen Test Specimen Initial Condition Test Conditions Hydraulic
Spec. Spec. Spec. Dry Unit Moisture Cell Back Consolid. Permeant Average Conductivity
No. Prep. Pl Length Diameter Weight Content Press. Press. Press. Liquid !4l Gradient
(-) (cm) (cm) ( pcf) (%) (psi) (psi) (psi) ( -) ( -) (emfs)
I R 5.99 7.21 118.4 14.6 90.0 60.0 30.0 DTW 23 3.2E-8
Notes:
1. Method C, "Falling-Head, Increasing-Tailwater" test procedures were followed during the testing.
2. *A mixture of equal volumes of C2Sl-C, C2Sl-F and C2Sl-G.
3. Specimen preparation: ST =Shelby Tube, R = Remolded, B = Block Saµiple.
4. Type ofpenneant liquid: DTW = Deaired Tap Water, DDI = Deaired Deionized Water
• Deviations:
Laboratory temperature at 22±3 °C.
Test specimen final conditions are not presented.
~ Excel Geotechnical Testing
"Excellence in Testing"
941 Forrest Street, Roswell, Georgia 30075
-'<' . • Tel: [phone] Fax: [phone]
FLEXIBLE WALL PERMEABILITY TEST ci>
ASTMD5084 •
Project Name: !UC White Mesa Mill
Project Number: 165
Client Name: GeoSyntec Consultants
Site Sample ID: Mix I* (See Note 2)
Lab Sample Number: K265
Material Type: Soil
Specified Value (cm/sec): NA
Date Test Started: 11/27/2005 ..
Specimen Test Specimen Initial Condition Test Conditions Hydraulic
Spec. Spec. Spec. DiyUnit Moisture Cell Back Consolid. Permeant Average Conductivity
No. Prep. Pl Length Diameter Weight Content Press. Press. Press. Liquid (4l Gradient
( -) (cm) (cm) ( pcf) (%) (psi) (psi) (psi) ( -) ( -) (emfs)
1 R 5.95 7.24 115.8 12.7 90.0 60.0 30.0 DTW 15 4.7E-7
Notes:
l. Method C, "Falling-Head, Increasing-Tailwater" test procedures were followed during the testing.
2. *A mixture of equal volumes ofCISI-C, CISL-E and ClSI-G.
3. Specimen preparation: ST = Shelby Tube, R = Remolded, B =Block Sample.
4. Type ofpermeant liquid: DTW = Deaired Tap Water, DDI = Deaired Deionized Water
* Deviations:
Laboratory temperature at 22%3 °C.
Test specimen ·final conditions are not presented.
,,.: Excel Geotechnical Testing •
"Excellence in Testing" ·~·' 941 Forrest Street, Roswell, Georgia 30075
Tel: [phone] Fax: [phone]
FLEXIBLE WALL PERMEABILITY TEST <1>
ASTMD5084 •
Project Name: mew White Mesa Mill
Project Number: 165
Client Name: GeoSyntec Consultants
Site Sample ID: Mix 1 * (See Note 2)
Lab Sample Number: K265
Material Type: Soil
Specified Value (cm/sec): NA
Date Test Started: 11/27/2005
Specimen Test Specimen Initial Condition Test Conditions Hydraulic
Spec. Spec. Spec. Dry Unit Moisture Cell Back Consol id. Permeant Average Conductivity
No. Prep. (3l Length Diameter Weight Content Press. Press. Press. Liquid"' Gradient
(-) (cm) (cm) (pcf) (%) (psi) (psi) (psi) ( -) ( -) (emfs)
I R 5.91 7.24 114.6 15.6 90.0 60.0 30.0 DTW 23 2.IE-8
Notes:
l. Method C, "Falling-Head, Increasing-Tailwater" test procedures were followed during the testing.
2. *A mixture of equal volumes ofClSl-C, ClSl-E and CISl-G.
3. Specimen preparation: ST =Shelby Tube. R = Remolded, B =Block Sample.
4. Type ofpermeant liquid: DTW = Deaired Tap Water, DOI= Deaired Deionized Water
• Deviations:
Laboratory temperature at 22±3 °C.
Test specimen final conditions are not presented.
..,. Excel Geotechnical Testing . ~··
"Excellence in Testing" ...
941 Forrest Street, Roswell, Georgia 30075
----... Tel: [phone] Fax: [phone]
FLEXIBLE WALL PERMEABILITY TEST <1>
ASTMD5084 •
Project Name: IUC White Mesa Mill
Project Number: 165
Client Name: GeoSyntec Consultants
Site Sample ID: Mix 2* (See Note 2)
Lab Sample Number: K266
Material Type: Soil
Specified Value (cm/sec): NA
Date Test Started: ll/27/2005 •.
Specimen Test Specimen Initial Condition Test Conditions Hydraulic
Spec. Spec. Spec. Dry Unit Moisture Cell Back Consolid. Permeant Average Conductivity
No. Prep. !3l Length Diamete1 Weight Content Press. Press. Press. Liquid (•I Gradient
( -) (cm) (cm) ( pcf) (%) (psi) (psi) (psi) ( -) ( -) ( cm/s)
l R 5.97 7.23 ll8.6 I 1.7 90.0 60.0 30.0 DTW 22 5.7E-7
Notes:
I. Method C, "Falling-Head, Increasing-Taihvater" test procedures were followed during the testing.
2. *A mixture of equal volumes ofC2Sl-C, C2Sl-F and C2SI-G.
3. Specimen preparation: ST = Shelby Tube, R = Remolded, B =Block Sample.
4. Type ofpenneant liquid: DTW =Dea ired Tap Water, DDI = Deaired Deionized Water
•Deviations:
Laboratory temperature at 22±3 °C.
Test specimen final conditions are not presented.
Ip.· Excel Geotechnical Testing . , _,.;·
"Excellence in Testing"
. ·"".l 941 Forrest Street, Roswell, Georgia 30075
Tel: [phone] Fax: [phone]
FLEXIBLE WALL PERMEABILITY TEST <1>
* ASTMD5084
Project Name: WC White Mesa Mill
Project Number: 165
Client Name: GeoSyntec Consultants
Site Sample ID: Mix 3* (See Note 2)
Lab Sample Number: K267
Material Type: Soil
Specified Value (cm/sec): NA
Date Test Started: l 1/2712005
Specimen Test Specimen Initial Condition Test Conditions Hydraulic
Spec. Spec. Spec. Dry Unit Moisture Cell Back Consolid. Permeant Average Conductivity
No. Prep. (31 Length Diameter Weight Content Press. Press. Press. Liquid 1'' Gradient
( -) (cm) (cm) ( pcf) (%) (psi) (psi) (psi) ( -) (-) (emfs)
I R 5.97 7.25 116.9 13.1 90.0 60.0 30.0 DTW 23 4.6£-8
Notes:
1. Method C, "Falling-Head, Increasing-Tailwater" test procedures were followed during the testing.
2. *A mixture of equal volumes of RF5-Sl-A and RF5-Sl-B.
3. Specimen preparation: ST ~Shelby Tube, R ~ Remolded, B ~Block Sample.
4. Type ofpermeant liquid: DTW = Deaired Tap Water, DDI = Deaired Deionized Water
* Deviations:
Laboratory temperature at 22±3 °C.
Test specimen final conditions are not presented.
·11· Excel Geotechnical Testing , .
~ .. ' "Excellence in Testing••
941 Forrest Street, Roswell, Georgia 30075
...!,.-.• •• Tel: [phone] Fax: [phone]
FLEXIBLE WALL PERMEABILITY TEST <1l
* ASTMD5084
Project Name: illC White Mesa Mill
Project Number: 165
Client Name: GeoSyntec Consultants
Site Sample ID: Mix 3* (See Note 2)
Lab Sample Number: K267
Material Type: Soil
Specified Value (cm/sec): NA
Date Test Started: 11/27/2005
•.
Specimen Test Specimen Initial Condition Test Conditions Hydraulic
Spec. Spec. Spec. Dry Unit Moisture Cell Back Consolid. Permeant Average Conductivity
No. Prep. <3> Length Diameter Weight Content Press. Press. Press. Liquid <4l Gradient
(-) (cm) (cm) ( pcf) (%) (psi) (psi) (psi) (-) ( -) ( cm/s)
I R 5.93 7.23 115.5 17.3 90.0 60.0 30.0 DTW 23 3.3E-8
Notes:
l. Method C, "Falling-Head, Increasing-Tailwater" test procedures \.Vere follo\ved during the testing.
2. *A mi'<ture of equal volumes of RF5-Sl-A andRF5-Sl-B.
3. Specimen preparation: ST ~Shelby Tube, R ~ Remolded, B ~Block Sample.
4. Type ofpermeant liquid: DTW = Deaired Tap Water, DOI= Deaired Deionized Water
* Deviations:
Laboratory temperature at 22±3 °C.
Test specimen final conditions are not presented.
LEGEND
EXISTING MAJOR
TOPOGRAPHIC CONTROUR
EXISTING MINOR
TOPOGRAPHIC CONTOUR
(=:> STOCKPILE LOCATION
500 250 0
SCALE IN FEET
500

Updated Tailings Cover Design Report

APPENDIX A.1.5
ROGERS AND ASSOCIATES ENGINEERING CORP
1988
•
II
' •
i -I !
I
Rogers & Associates Engineering Corporation
h
rporation
ly:
We have the tests ordered on the four es shippej to JS.
The l lows:
Radium Emanation Diffusion
e Fraction Coeffic. Moisture Sa tu rat ion
981±4 0.19±0.01 2.0E-02 1. .2 0.39
8.4£-03 1.44 19.l 0.56
ite (2,3,&5) 1. 6£-02 1.85 6.5 0.40
4.SE-04 1.84 12.5 o.
te #1 1. 6E-02 1.85 8 .1 0.48
l.4E-03 1.84 .6 0.76
te f/4 l. lE-02 1.65 15 .4 0.63
4.2E-04 1. 19.3 0.80
The es will be shipped back to you in the next few weeks. If you
any t ions re ing results on es ease free to ca 11 .
ncere1 •
• -
I
I
' ':i I
t ~
' • • I
I
I
I
• I
1{
A
E
l;{ogers & Associates Engineering. Corporation
Mr. C.O. Sealy
UMETCO Minerals Corporation
P.O. Box 1029
Grand Junction, CO 81502
Dear Mr. Sealy:
Post Office Box 330
Salt Lake City, U tah 84110
[phone]
May 9, 1988
C8700/ 22
The tests for radium content arJd radon emanation coefficient in the
following Sctmples have been completed and the results are as follows:
Sample
Random (2,3 &. 5)
Site 1
Site 4
Radium (pCi/g)
1.9 + 0.1
2.2 + 0.1
2.0 + 0.1
Radon
Emanation Coefficient
0.19 + 0.04
0. 20 . + 0. 0 3
0.11 + 0.04
If you have any questions regarding these results please feel free to
call Or . Kirk Ni elson or me.
RYB:m~
Sincerely ,
~~~
Renee Y. Bowser
Lab Supervisor
515 East 4500 South · Salt Lake: City. Utah 84 !07

Updated Tailings Cover Design Report

APPENDIX A.1.6
WESTERN COLORADO TESTING, INC.
1999a
The onsite random fill and clay stockpiles were sampled in characterized in a program detailed in
the April 15, 1999, submittal to the NRC, "Additional Clarifications to the Whit~ Mesa Mill
Reclamation Plan". A copy of this sampling and testing program are included in this Attachment
as well as the results of the characterization work. The samples wee characterized for: · r
--Classification
-Grain size and sieve
-Atterberg limits
--Standard Proctor
The results of these tests for the onsite stockpiled material are included in this Attachment.
Soil Sampling and Testing Program White Mesa Mill
The purpose of this Soil Sampling and Testing Program is to verify the soil classification
gradation and compaction characteristics standard proctor of the stockpiled random fill and
clay materials that will be used for cover materials on the tailings cells at the White Mesa Mill
Additionally this program will verify the compaction characteristics and gradation of the random
fill materials utilized in the platform fill previously placed on Cells and
Sampling
Sampling will take place on each of six stockpiles of random fill designated RF-i through RF-6
on Exhibit two clay material stockpiles C-i and C-2 on Exhibit and on platform fill
areas in Cells total of samples will be taken from the random fill stockpiles Two
samples will be taken from the clayS stockpiles and three samples will be taken from the
covered areas of the cells Samples will be taken from test pits excavated by backhoe Samples
will be taken from depth of feet in stockpiles and from foot depth in cells One backhoe
bucket full of material will be taken from the test pit at the specified depth and dumped
separately This sample will be quartered and one quarter will be screened to minus rocks
over will be removed prior to screening Two five gallon sample buckets will be filled with
sample randomly selected from the screened fraction Oversized material remaining after the
screening of the sample will be visually classified and then weighed Sample locations will be
indicated on site map and sample descriptions will recorded and maintained in the facilitys
records total of fourteen samples will be submitted for testing during this program
Testing
Samples will be packaged and shipped to certified commercial testing laboratory for testing
Tests will be run on each sample for standard proctor ASTM D698 particle size analysis
ASTM Ci 17 and ASTM Ci36 soil classification ASTM D2487 and plasticity index
Atterberg limits ASTM D43 18
SOILTEST.DOC/04/14/99/250 PM
125
120
4-
115
110
105
100
MOISTURE-DENSITY RELATIONSHIP TEST
ZAV for
Sp
2.65
Water content
Test specification ASTM 69891 Procedure Standard
Oversize correction applied to each point
Elev/
Depth
Classification Nat
Moist Sp.C LL P1
3/8 in No.200USCSAASHTO
N/A 2.65 16.1
ROCK CORRECTED TEST RESULTS UNCORRECTED MATERIAL DESCRIPTION
Maximum dry density 122.0 pcf
Optimum moisture 11.6
116.1 pcf
13.8
21W
Sand clayey grvly brn
Project No 804899
Project International Uranium Corporation
Location Soil Sample Testing
Date 5/3/99
Remarks
SUBMITTED BY Client
TESTED BY JH
Fig No
MOISTUREDENSITY RELATIONSHIP TEST
WESTERN COLORADO TESTING INC
10 12 14 16 18 20
I-
LIQUID AND PLASTIC LIMITS TEST REPORT
LIQUID LIMIT
23Sandvetyclayeysisiltyred 19 25.156.9 SM
MATERIAL DESCRIPTION LI.PL Pt %40 %200 IJSCS
Project No 804899 Client International Uranium Coiporalion
Project Soil Sample Testing
Source Sample No 2-1-W
-_
Remarks
Tested By JH
Figure 22
LIQUID AND PLASTIC LIMITS TEST REPORT
WESTERN COLORADO TESTING INC
PARTICLE SIZE DISTRIBUTION TEST REPORT
s
"' 100 !
90
80
70
0::: w 60 z u::
I-50 z ·w
0 0::: 40 w rl.
30
20
10
0
200 100
%+~· %GRAVEL
0 24.8
SIEVE PERCENT FINER
inches 0 size
3 100.0
2 100.0
1.5 100.0
1 91.l
3/4 93.4
1/2 86.3
3/8 82'6
_><: GRAIN SIZE
D6Q -0.726
030 0.0973
010
:><:: COEFFICIENTS
Cc
Cu
o Souroe:
10
%SAND
50.l
SIEVE
number
size
#4
#10
-#20
#140
#60
#100
#200
' j \: 1 l
' ' ' N.
.
! ~ !
' ' '
1 0.1
GRAIN SIZE -mm
%SILT %CLAY
PERCENT FINER
0
75.2
66.3
60.7
56,9
49.9
38.8
25.1
Sany>leNo.: 2-1-W
O.o1 0.001
uses AASHTO .PL . LL
SM A-2-4(0) 19 23
·SOIL DESCRIPTION
O Sand, very clayey, sl silty, red
REMARKS:
·· 0 Tested By: JH
Client International Urani~on
Project: Soil Sample T....,.; ... ,.. WESTERN COLORADO T.ESTING~ INC. ~
Proiect No.: 804899 Fiaure 38
124
122
120
-4-
118
116
MOISTURE-DENSITY RELATIONSHIP TEST
114
Water contents
Test specification ASTM 69891 Procedure Standard
Oversize correction applied to each point
Elev/
Depth
Classification Nat
Moist Sp.G LL P1
3/8 in No.200USCSSAASHTO
N/A 2.65 13.4
ROCK CORRECTED TEST RESULTS UNCORRECTED MATERIAL DESCRIPTION
Maximum dry density 122.8 pcf
Optimum moisture 10.8%
122.8 pcf
10.8
2W7C
Sand silty gravely br
Project No 804899
Project International Uranium Corporation
Location Soil Sample Testing
Date 5/3/99
Remarks
SUBMITTED BY Client
TESTED BY JH
Fig No
MOISTUREDENSITY RELATIONSHIP TEST
WESTERN COLORADO TESTING INC
10 12 14 16 18
PARTICLE SIZE DISTRIBUTION TEST REPORT
SAND SILT %CLAY USCS AASHTO P1.LL
15.9 54.5 SM
jA-240
SIEVE
inches
size
PERCENT FINER SIEVE
number
size
PERCENT FINER SOIL DESCRIPTION
Sand silty gravelytrown
100.0 84.1
100.0 10 80.3
1.5 1010 20 77.0
100.0 40 68.6
3/4 95.7 60 46.4
1/2 91.0 100 36.7
3/8 88.3 200 29.6
GRAIN SIZE REMARK
OTestedfly ii-0.344
D30 0.0781
D10
CO EFFICIENT
C0
Cu
Source Sample No 2W-7C
Client International UraniumCoiporation
WESTERN COLORADO TESTING4 INC Sail Sample Testing
Pro3ect No 804899 Fiaure 39
Ui
LL
Ui
Lii
0.
130
125
.4-
120
4-.
CO
II
-D
115
110
MOISTURE-DENSITY RELATIONSHIP TEST
ZAV for
Sp
2.65
105
Water content
Test specification ASTM 69891 Procedure Standard
Oversize correction applied to each ooint
Elev/
Depth
Classification Nat
Moist Sp.G LL RI
3/4 in No.200USCSAASHTO
N/A 2.65 9.0
ROCK CORRECTED TEST RESULTS UNCORRECTED MATERIAL DESCRIPTION
Maximum dry density 122.4 pcf
Optimum moisture 10.7
119.3 pcf
11.8
3iC
Sand clayey grvly brn
Project No 804899
Project International Uranium Corporation
Location Soil Sample Testing
Date 5/3/99
Remarks
SUBMITTED BY Client
TESTED BY JH
Fig No
MOISTUREDENSITY RELATIONSHIP TEST
WESTERN COLORADO TESTING INC
10 12 14 16 18 20
LIQUID AND PLASTIC LIMITS TEST REPORT
Dashed line indicates the approximate
upper limit boundary for natural soils
6C
50-
40
30
20-
10
%-
ML or OL MH orOH
10 30 50 70 90 110
LIQUID LIMIT
Sand clayey gravely brocm 26 16 69.510 36.9 SM
MATERIAL DESCRIPTION LL PL RI %40 %200 -USCS
Project No 804899 Client International Uranium Corporation
Project Soil Sample Testing
Source Sample No 3-iC
Remarks
Tested By ill
Figure 23
LIQUID AND PLASTIC LIMITS TEST REPORT
WESTERN COLORADO TESTING INC
PARTICLE SIZE DISTRIBUTION TEST REPORT
0::: w z u:
t-z w 0 0::: w a..
0
100
90
80
70
60
50
40
30
20
10
0
200 100
%+3"
SIEVE
inches .,
size
3
2
1.5
I
3/4
112
3/8
0
100.0
100.0
1-00,e
100.0
95.8
91.3
88.3
%.GRAVEL
17.4
PERCENT FINER
Dso 0.282
Dao
010
:><" COEFFICIENTS
0 Sow:ce:
f.
i i ;
%SAND
45.7
... •
SIEVE
number
size
#4
#10
#20
#40
#60
#100
#200
~i !-
1· ~ !
1 0.1
GRAIN StZE -mm
%SILT % Cl.A'(
PERCENT FINER
0
82.6
77.4
74,0
69.5
57.0
47.2
36.9
Sam_pleNo.: 3-lC
0.01
uses AASHTO
SM A-4(0)
SOIL -DESCRIPTION
0-Sand, clayey, gravely, -brown
REMARKS:
0 Tested By: JH
Client: International Uranium-Corporation
WESTERN COLORADO TJ:STING~ JNC. Project: Soil Sample Testing
PmiAct No.: 804899 Fiaure
0.001
-PL -LL
16 26
40
118
116
9-
114
4-
Cl
112
110
MOISTURE-DENSITY RELATIONSHIP TEST
ZAV for
Sp
2.70
108
10
Water content
Test specification ASTM 69891 Procedure Standard
Oversize correction applied to each ooint
Elev/
Depth
Classification Nat
Moist Sp.G LL P1
No.4 No.200USCSAASHTO
N/A 2.70
ROCK CORRECTED TEST RESULTS UNCORRECTED MATERIAL DESCRIPTION
Maximum dry density 117.7 pcf
Optimum moisture 15.1
117.7 pcf
15.1
ClSi
Clay sandy silty rd
Project No 804899
Project International Uranium Corporation
Location Soil Sample Testing
Date 5/3/99
Remarks
SUBMITTED BY Client
TESTED BY JH
Fig No
MOISTUREDENSITY RELATIONSHIP TEST
WESTERN COLORADO TESTING INC
12 14 16 18 20 22
Co
LIQUID AND PLASTIC LIMITS TEST REPORT
LIQUID LIMIT
Clay vejy sandy silty red 28 16 12 98.3 64.8
MATERIAL DESCRIPTION Li It RI %40 %flO USCS
Project No 804899 Client International Uranium Corporation
Project Soil Sample Testing
Source Sample No Cl-Si
Remarks
Tested Thy JH
Figure 24
LIQUID AND PLASTIC LIMITS TEST REPORT
WESTERN COLORADO TESTING INC
CL
PARTICLE SIZE DISTRIBUTION TEST REPORT
%GRAVEL SAND SILT CLAY -I uSCS -I AASHTO PL LL
10 32 CL A-65 28
SIEVE
size
PERCENT FINER SIEVE
number
size
PERCENT FINER -SOIL DESCRIPTION
Clay vezy sandy silty red
1.5
3/4
1/2
3/8
100.0
100.0
1-00.0
100.0
100.0
100.0
100.0
10
20
fl40
60
100
200
100.0
99.9
-99.5
983
96.2
92.3
64.8
REMARKS
Tested By JH
GRAIN SIZE
D30
D10
COEFFICIENTS
Cc
Cu
Source SamyleNo Cl-SI
Client International iJranium-Corporalion
WESTERN COLORADO TESTING INC Soil Sample Testing
Project No 804899 Fioure 41
Lt
LU
LU
130
125
1-
120
ii
115
110
MOISTURE-DENSITY RELATIONSHIP TEST
ZAV for
Sp.G
2.65
105
Water content
Test specification ASTM 69891 Procedure Standard
Oversize correction applied to each point
Elev/
Depth
Classification Nat
Moist Sp.G LL P1
3/4 in No.200USCSAASHTO
N/A 2.65 10.3
ROCK CORRECTED TEST RESULTS UNCORRECTED MATERIAL DESCRIPTION
Maximum dry density 124.2 pcf
Optimum moisture 10.3
120.7 pcf
11.5
C2S1
Sand clayey grvly brn
Project No 804899
Prqject International Uranium Corporation
Location Soil Sample Testing
Date 5/3/99
Remarks
SUBMITTED BY Client
TESTED BY JH
Fig Na
MOISTUREDENSITY RELATIONSHIP TEST
WESTERN COLORADO TESTING INC
10 12 14 16 18 20
LU
LIQUID AND PLASTIC LIMITS TEST REPORT
Sand clayey gravely broi 25 23 48.2 26.7 SM
MATERIAL DESCRIPTION LI PL P1 %c40 %200 IJSCS
Project No 804899 Client International Uranium Corporation
Project Soil Sample Testing
Source Sample No C2-Sl
Remarks
Tested By JH
Figure 25
LiQUID AND PLASTIC LIMITS TEST REPORT
WESTERN COLORADO TESTING INC
50-
40-
--
Dashed line indicates the approximate
upper limit boundary for natural soils
20-
10
MLorOL
10
MH orOH
LIQUID LIMIT
10 110
LU
a-
PARTICLE SIZE DISTRIBUTION TEST REPORT
31-9 41.4
01
SM A-2-40 23
%3 %GRAVEL %SAND %SILT %CLAY uscs S4ASHTO PL 11
25
SIEVE
inches
size
PERCENT FINER SIEVEl1
size
PERCENT FINER SOIL-DESCRIPTION
Sand clayey gravely trown
1.5
3/4
1/2
3/8
100.0
100.0
96.6
9kB
90.0
84.9
80.3
10
20
40
60
100
200
68.1
58.0
52.1
48.2
43.8
36.0
263
GRSAJN SIZE -REMARKS
OTestedByJHD60
D30
10
2.48
0.0977
COEFFICIENTS
Cc
Source Sample No C2-S1
Client International Uranium-Corporation
WESTERN COLORADO TESTING INC Prt Soil Sample Testing
Project No 804899 Flaure 42
.4-
-D
114
MOISTURE-DENSITY RELATIONSHIP TEST
104
10
Water content
Test specification ASTM 69891 Procedure Standard
Oversize correction applied to each ooint
Elev/
Depth
Classification Nat
Moist Sp.C LL P1
No.4 No.200USCSAASHTO
N/A 2.65
ROCK CORRECTED TEST RESULTS UNCORRECTED MATERIAL DESCRIPTION
Maximum dry density 114.1 pcf
Optimum moisture 13.2%
114.1 pcf
13.2%
RF1S1
Cloy silty sandy red
Project No 804899
Pro-ject International Uranium Corporation
Location Soil Sample Testing
Date 5/3/99
Remarks
SUBMITTED BY Client
TESTED BY JH
Fig No 12
MOISTUREDENSITY RELATIONSHIP TEST
WESTERN COLORADO TESTING INC
112
110
108
106
ZAV for
Sp
65
12 14 16 18 20 22
LIQUID AND PLASTIC LIMITS TEST REPORT
LIQUID LIMIT
27Claysiltysandyred 20 99A 63.1 ML
MATERIAL DESCRIPTION LL PL P1 %40 %C200 USCS
Project No 804899 Client International Uranium Corporation
Project Soil Sample Testing
Source Sample No RF1-Sl
Remarks
Tested By JR
Figure 26
LIQUID AND PLASTIC LIMITS TEST REPORT
WESTERN COLORADO TESTING INC
PARTICLE SIZE DISTRIBUTION TEST REPORT
th -c
_L___A....A..ic -_A
100
-i 00
t1
Ui
Ui
Ui
a-
Sc---H----- ---
7C-------------4-
Sc--H-H-----
4C------.------------
3c--------s-------
2C --
ic ----
ooioo 10
GRAIN
0.1
SIZE-mm
0.01 0.001
%3 GRAVEL -I SAND %SILT %CLAY uSCS AASHTO P-I.
ci
369 ML A401J
SIEVE
Thebes
size
PERCENT FINER SIEVE
number
size
PERCENT FINER -SOIL DESCRIPTION
O-Claysiltysandyrcd
1.5
314
1/2
3/8
100.0
100.0
100.0
ioo.o
100.0
100.0
100.0
10
20
40
60
100
200
100.0
99.8
99.-S
99
97.6
95.2
63.1
D60
D30
D10
GRAJN.SIZE REMARXS
T-estedBy 311
C0
CU
COEFFICIENTS
oSoutce SampleNo.RF1-S1
Client InternalionaflJranium-Corporation
WESTERN COLORADO TESTING INC Project Soil Sample Testing
Project No 804899 Fiqure 43
.4-
115
ci
110
100
10
Water content
Test specification ASTM 69891 Procedure Standard
Oversize correction app1 ied to each point
125
120
MOISTURE-DENSITY RELATIONSHIP TEST
105 ZAV for
Sp.G
2.65
12 14 16 18 20 22
EIev/
Depth
Classification Nat
Moist Sp.G LL P1
3/8 in No.200USCSIAASHTO
N/A 2.65 18.0
ROCK CORRECTED TEST RESULTS UNCORRECTED MATERIAL DESCRIPTION
Maximum dry density 118.3 pef
Optimum moisture 13.2
111.3 pcf
16.1
RF2S1
Sand clayey grvly brn
Project No 804899
Project International Uranium Corporation
Location Soil Sample Testing
Date 5/3/99
Remarks
SUBMITTED BY Client
TESTED BY JR
Fig No 13
MOISTUREDENSITY RELATIONSHIP TEST
WESTERN COLORADO TESTING INC
LL
PARTICLE SIZE DISTRIBUTION TEST REPORT
%r GRAVEL SAND SILT CLAY USGS AASHTO PL LL
oj
34.8 47.5 SM A-I-b
NP NPJ
SIEVE
size
PERCENT FINER SIEVE
number
size
PERCENT FINER SOIL DESCRIPTION
Sand sl clayey gravely brown
1.5
3/4
1/2
3/8
100.0
100.0
100.0
931
91.0
83.1
77.5
10
20
4060
100
200
65.2
52.6
44A
38.8
32.9
25.8
17.7
GRPJN SIZE -REMARKS
Tested By JHD60
D30
D10
3.42
0.203
COEFFICIENTS
C0
Cu
Soute Sample No RF2-S1
-CISt International UraniunrCorpocation
WESTERN COLORADO TESTING INC Project Soil Sample Testing
Project No 804899 Figure 44
135
9-
125
1-
120
MOISTURE-DENSITY RELATIONSHIP TEST
110
Water content
Test specification ASTM 69891 Procedure Standard
Oversize correction applied to each ooint
EIev/
Depth
Classification Nat
Moist Sp.G LL P1
3/4 in No.200USCSAASHTO
N/A 2.65 18.2
ROCK CORRECTED TEST RESULTS UNCORRECTED MATERIAL DESCRIPTION
Maximum dry density 128.7 pcf
Opt imum moisture 8.8
122.7 pcf
10.8
RF2-S2
Sand gravely brown
Project No 804899
Project International Uranium Corporation
Location Soil Sample Testing
Date 5/3/99
Remarks
SUBMITTED BY Client
TESTED BY JH
Fig No 14
MOISTUREDENSITY RELATIONSHIP TEST
WESTERN COLORADO TESTING INC
130
115
ZAV for
Sp.C
2.65
10 12 14 16
PARTICLE SIZE DISTRIBUTION TEST REPORT
%GRAVEL SAND SILT CLAY USCS AASHTO .PL Ii
30.9 50.5 SM A-2-40
NIH
SIEVE
size
PERCENT FINER SIEVE
number
size
PERCENT FINER Oft DESCRIPTION
Sand gravclyirown
1.5
3/4
1/2
3/8
100.0
100.0
100.0
961
94.8
88.4
80.1
10
20
40
60
100
200
69.1
61.1
56.4
.5L7
38.0
24.4
18.6
D30
D10
-GRAiN SIZE REMARKS
OTestedByiH1.73
0.190
COEFFICIENTS
C0
Cu
Source Sample No RF2-S2
GISt International Uranium-Corporation
WESTERN COLORADO TESTING tNC Project Soil Same Testing
Project No 804899 Fiqure 45
tt
Lii
El-
130
125
.4-
120
.4-
115
110
105
MOISTURE-DENSITY RELATIONSHIP TEST
ZAV for
Sp.G
2.65
Water content
Test specification ASTM 69891 Procedure Standard
Oversize correction applied to each point
Elev/
Depth
Classification Nat
Moist Sp.G LL P1
3/4 in No.200USCSPASHTO
N/A 2.65 6.6
ROCK CORRECTED TEST RESULTS UNCORRECTED MATERIAL DESCRIPTION
Maximum dry density 121.4 pcf
Optimum moisture 11.3
119.2 pcf
12.1
RF3S1
Sand clayey grvly brn
Project No 804899
Project International Uranium Corporation
Location Soil Sample Testing
Date 5/3/99
Remarks
SUBMITTED BY Client
TESTED BY .N
Fig No 15
MOISTUREDENSITY RELATIONSHIP TEST
WESTERN COLORADO TESTING INC
10 12 14 16 18 20
2upsojojdumgpopefaJd13N1DNIIS3IOOVUOT03NJ1SM
UOPUOthoaUmUtIfluoqnitquaq
HfPL
gJqpJJ
uMoiqAjaisi2oAvpjspuv
NOtLdI8OS3O1IOŁI3NIdIN9OŁJ3d
WWBZIS NIVŁJO
oomog IS-C.tffloNojdhws
.N31013d303
ŁI3NIdlN3OŁSd
iŁIOd3ŁI.LS31NOI1fl81ŁLLSI3ZIS3131J.Wd
112
110
.4-
108
106
104
MOISTURE-DENSITY RELATIONSHIP TEST
LAY or
Sp .0
2.65
102
12
Water content
Test specification ASTM 69891 Procedure Standard
Oversize correcflon applied to each ooint
Elev/
Depth
Classification Nat
Moist Sp.G LL P1
No.4 No.200USCSAASHTO
N/A 2.65
ROCK CORRECTED TEST RESULTS UNCORRECTED MATERIAL DESCRIPTION
Maximum dry density 11L7 pcf
Optimum moisture 14.3
111.7 pef
14.3
RF3S2
Clay sandy red
Project No 804899
Project International Uranium Corporation
Location Soil Sample Testing
Date 5/3/99
Remarks
SUBMITTED BY Client
TESTED BY JH
Fig No 16
MOISTUREDENSITY RELATIONSHIP TEST
WESTERN COLORADO TESTING INC
14 16 18 20 22 24
LIQUID AND PLASTIC LIMITS TEST REPORT
Clay very sandy red 28 20 69.0 39.0 SM
MATERIAL DESCRIPTION LL PL P1 %c40 %200 USCS
Project No 804899 Client International Uranium Corporation
Project Soil Sample Testing
Source Sample No RF3-S2
Remarks
Tested By JH
Figure 27
LIQUID AND PLASTIC LIMITS TEST REPORT
WESTERN COLORADO TESTING INC
It
Dashed line indicates the
approximate___upper limit boundary for natural soils
_________________________________50-
/i__
40-
lI//I/Ill/I
30
___________________________ ____20-
10 ___.7
________
____________ML
c1rOL
MHorOH
47
10 30 50 70 90 110
LIQUID LIMIT
It
Ui
Ui
It
Ui
PARTICLE SIZE DISTRIBUTION TEST REPORT
to
100
11 II 11111 liii iii
11 it ill liii
-H
2C ---
IC --___
200100 10 0.1 0.01 OMOi
GRAINSIZE mm
16.3 44.7
%3 %GRAVEL %SAND %SJLT %CLAY USCS AASHTO -FL U.
SM A-40
SIEVE
inches
size
PERCENT FINER SIEVE
number
size
PERCENT FINER SOIL UtbUMW1 run
Clay vecy sandy red
1.5
3/4
1/2
3/8
100.0
100.0
100.0
JOQ.0
98.7
94.0
90.8
10
20
40
60
100
200
83.7
78.2
73.4
69.0
63.7
45.5
39.0
GRAIN SIZE REMARKS
Tested By JH
D3
D10
0.222
COEFFICIENTS
Cc
Cu
Source Sample No RF3-S2
Client International UraniumCorporation
WESTERN COLORADO TESTING mic Prct Soil SamPle Testing
Project No R04899 Ficure 47
135
130
4-
C-
125
4.J
Co
120
115
110
MOISTURE-DENSITY RELATIONSHIP TEST
Water content
Test specification ASTM 69891 Procedure Standard
Oversize correction applied to each point
Elev/
Depth
Classification Nat
Moist Sp.G LL P1
3/4 in No.200USCSAASHTO
N/A 2.65 18.1
ROCK CORRECTED TEST RESULTS UNCORRECTED MATERIAL DESCRIPTION
Maximum dry density 127.4 pcf
Optimum moisture 10.3
121.3 pcf
12.6
RF3S3
Sand clayey qrvly brn
Project No 804899
Project International Uranium Corporation
Location Soil Sample Testing
Date 5/3/99
Remarks
SUBMITTED BY Client
TESTED BY JH
Fig No 17
MOISTUREDENSITY RELATIONSHIP TEST
WESTERN COLORADO TESTING INC
10 12 14 16 18
PARTICLE SIZE DISTRIBUTION TEST REPORT
to
Ui
ElI II
8C
7C-
60-----
-------
--
---------
5C
x--------------
2C
10--------
200 100 10
GRAIN
0.1
SIZE mm
0.01 0.001
%a %GRAVEL %SAND SILT CLAY IJSCS AASHTO -P-I-JL
01
22.7 53.6 SM A..2-4o
jNPJNP
SIEVE
inches
size
PERCENT FINER SIEVE
number
size
PERCENT FINER -SOIL DESCRIPTION
Sand sI clayey gravely-brown
1.5
3/4
1/2
3/8
100.0
100.0
100.0
97.4
97.4
90.9
86.2
10
20
40
60
100
200
77.3
69.7
64.1
35.8
38.8
30.2
23.7
GRAIN SIZE R-EMARKSC
OTested43yJHD60
D30
D10
0323
0.147
COEFFICIENTS
Cc
Cu
Source Sample No RF3-S3
Client InteniationalUranium-Corporation
WESTERN COLORADO TESTING INC Project Soil Sample Testing
Project No 804899 Fioure 48
135
MOISTURE-DENSITY RELATIONSHIP TEST
110
Water content
Test specification ASTM 69891 Procedure Standard
Oversize correction applied to each point
Elev/
Depth
Classification Nat
Moist Sp.G LL P1
3/4 in No.200USCSAkSHTO
N/A 2.65 7.7
ROCK CORRECTED TEST RESULTS UNCORRECTED MATERIAL DESCRIPTION
Maximum dry density 127.2 pcf
Optimum moisture 9.9
124.8 pcf
10.7
RF4S1
Sand clayey grvly brn
Project No 804899
Project International Uranium Corporation
Location Soil Sample Testing
Date 5/3/99
Remarks
SUBMITTED BY Client
TESTED BY JH
Fig No 18
MOISTUREDENSITY RELATIONSHIP TEST
WESTERN COLORADO TESTING INC
130
.4-
125
Co
120
115
ZAV for
Sp.G
2.65
10 12 14 16
CD
LIQUID AND PLASTIC LIMITS TEST REPORT
LIQUID LIMIT
22Sandclayey gravely brown 19 51.1 25.5 SM
MATERIAL DESCRIPTION LL PL P1 %40 %200 USCS
Project No 804899 Client International Uranium Corporation
Project Soil Sample Testing
Source Sample No RF4-S1
Remarks
Tested By JH
Figure 28
LIQUID AND PLASTIC LIMITS TEST REPORT
WESTERN COLORADO TESTING INC
PARTICLE SIZE DISTRIBUTION TEST REPORT
___oo Th nnirr
LL
%SAND %SILT IJSCS AASHTO
91 -----
Sc --
be .S__60
50 -----.-
-----
2C ------
--H
----
oJ_
200 100 10 0.1 0.01 0.001
-GRAIN SIZE mm
311 GRAVEL -P1
31.8 42.7 SM A-2-40
SIEVE
inches
size
PERCENT FINER SIEVE
number
size
PERCENT FINER SOIL DESCRIPTION
0-Sand clayey gravely brown
1.5
3/4
1/2
3/8
100.0
100.0
100.0
88.1
86.1
81.3
77.7
10
20
40
60
100
W200
68.2
59.6
546
51.1
44.7
33.3
255
GRAIN SIZE REMARKS
TestedB ill060
D30
D10
2.11
0.122
COEFFICIENTS
C0
Source Sample No RF4-S1
International -Uranium Corporation
WESTERN COLORADO TESTING INC Prct Soil Sample Testing
Project No 804899 Fioure 49
130
25
4-
120
4J
-o
115
110
MOISTURE-DENSITY RELATIONSHIP TEST
ZAV for
Sp.G
2.65
105
Water content
Test specification ASTM 69891 Procedure Standard
Oversize correction applied to each coint
Elev/
Depth
Classification Nat
Moist Sp.G LL P1
3/8 in No.200USCSAASHTO
N/A%2.65 4.1
ROCK CORRECTED TEST RESULTS UNCORRECTED MATERIAL DESCRIPTION
Maximum dry density 123.5 pcf
Optimum moisture 11.3
122.2 pcf
11.7
RF5S1
Sand clayey grvly brn
Project No 804899
Project International Uranium Corporation
Location Soil Sample Testing
Date 5/3/99
Remarks
SUBMITTED BY Client
TESTED BY JH
Fig No 19
MOISTUREDENSITY RELATIONSHIP TEST
WESTERN COLORADO TESTING INC
10 12 14 16 18 20
LIQUID AND PLASTIC LIMITS TEST REPORT
LIQUID LIMIT
24 18Sandclayey gravely brown 74.3 41.6 SM
MATERIAL DESCRIPTION LL PL P1 %c40 %200 USCS
Project No 804899 Client Jnternational Uranium Corporation
Project Soil Sample Testing
Source Sample No RF5-S1
Remarks
Tested By iii
Figure 29
LIQUID AND PLASTIC LIMITS TEST REPORT
WESTERN COLORADO TESTING INC
PARTICLE SIZE DISTRIBUTION TEST REPORT
100
.5
AflJJ
U-
LU
C-
LU
0-
sJ-
70-
60----------
50------H------
4C------
30-------m----
2C-
ic
---h1-------
200 100 10 0_I 0.01 0.001
GRAIN SIZE mm
%GRAVEL SAND SILT CLAY uSCS AA.SHTO ft 1_i
13.2 45.2 SM
jAA0
SIEVE
inches
size
PERCENT FINER SIEVE
number
size
PERCENT FINER SOII DESCRIPTION
Sand claycy gravelytrown
1.5
3/4
1/2
3/8
100.0
100.0
100.0
97.2
97.2
93.9
92.1
10
20
40
60
100
-200
868
82.2
783
743
67.8
56.2
4L6
GRAIN SIZE -REMARKS
OTcstedlly ii
D30
DID
-0.176
COEFFICIENTS
C0
Source Sample No RF5-S1
International UraniumCorporation
WESTERN COLORADO TESTLNG INC Proect Soil Sample Testing
II Project No 804899 Fioure 50
130
.4-
120
MOISTURE-DENSITY RELATIONSHIP TEST
Water content
Test specificotion ASTM 69891 Procedure Standard
Oversize correction applied to each point
Elev/
Depth
Classification Nat
Moist Sp.G LL P1
3/4 in No.200USCSAASHTO
N/A%2.65 11.7%
ROCK CORRECTED TEST RESULTS UNCORRECTED MATERIAL DESCRIPTION
Maximum dry density 126.6 pcf
Optimum moisture 9.2
122.8 pcf
10.4
RF6S1
Sand clayey grvly brn
Project No 804899
Project International Uranium Corporation
Location Soil Sample Testing
Date 5/3/99
Remarks
SUBMITTED BY Client
TESTED BY JH
Fig.No 20
MOISTUREDENSITY RELATIONSHIP TEST
WESTERN COLORADO TESTINC INC
125
115
110
105
ZAV for
Sp.C
2.65
10 12 14 16 18
a-
LIQUID AND PLASTIC LIMITS TEST REPORT
LIQUID LIMIT
23Sandclayey gravely brom 16 30.653.0 GC-GM
MATERIAL DESCRIPTION IS PL P1 %c40 %c200 USCS
Project No 804899 Client International Uranium Corporation
Project Soil Sample Testing
Source Sample No RF6-S1
Remarks
Tested By ill
Figure 30
LIQUID AND PLASTIC LIMITS TEST REPORT
WESTERN COLORADO TESTING INC
PARTICLE SIZE DISTRIBUTION TEST REPORT
0::: w z u::
I-z w (.)
0::: w a..
0
.s .5 CD
100
90
80
70
60
50
40
30
20
10
0
200 100
%+~·
SIEVE
inches
size
3
2
1.5
1
3/4
1/2
3/8
0
100.0
100.0
100;()
88.9
84.7
76.8
71.6
.E .s -.s Sl s ~ ~ ~
%GRAVEL
35.3
PERCENT FINER
:><_ GRAIN SIZE
COEFFICIENTS
o Source:
-' ' ' ' '
10
%SAND
34.1
-0 ;;;
SIEVE
number
size
#4
#10
#20
#40
#60
#100
#200
'
i l -
N.'
! ! ~~J
1 0.1 0.01
GRAIN S1ZE -mm
%SILT %CLAY uses .AASHTO
-GC-OM A-2-4(-0)
PERCENT FINER -SOIL DESCRIPTION
1---0--.---~----1_ -o-Sand, clayey, gravely;brown
64.7
59.5
56.7
53.0
46.4
39.l
30.6
REMARKS:
O Tested By: JH
Sample No.: RF6-Sl
Client: International Uranium Corporation
WESTERN COLORADO TESTING, INC. Project: Soil Sample Testing
Proiect No.: 804899 F"iaure
0.001
-PL -LL
16 23
51
114
112
110
108
106
104
MOISTURE-DENSITY RELATIONSHIP TEST
10
ZAV for
Sp
2.65
Water content
Test specification ASTM 69891 Procedure Standard
Oversize correction applied to each coint
Elev/
Depth
Classification Nat
Moist Sp.G LL P1
No.4 No.200USCSAASI-ITO
N/A 2.65
ROCK CORRECTED TEST RESULTS UNCORRECTED MATERIAL DESCRIPTION
Maximum dry density 113.1 pcf
Optimum moisture 13.9
113.1 pcf
13.9
RF7S1
Clay sandy silty rd
Project No 804899
Project International Uranium Corporation
Location Soil Sample Testing
Date 5/3/99
Remarks
SUBMITTED BY Client
TESTED BY JH
Fig No 211
MOISTUREDENSITY RELATIONSHIP TEST
WESTERN COLORADO TESTING INC
12 14 16 18 20 22
Co
0.
LIQUID AND PLASTIC LIMITS TEST REPORT
LIQUID LIMIT
23 20Clayveiysandysiltyred 88.6 56.8 ML
MATERIAL DESCRIPTION IL PL RI %40 %c200 USCS
Project No 804899 Client International Uranium Corporation
Project Soil Sample Testing
Source Sample No RF7-Sl
Remarks
Tested By ill
Figure 31
LIQUID AND PLASTIC LIMITS TEST REPORT
WESTERN COLORADO TESTING INC
uJ
U-
Ui
PARTICLE SIZE DISTRIBUTION TEST REPORT
%SAND %SILT CLAY USGS AASHTO PL LL
7.1 36.1 IvIL A-40 20 23
SIEVE
inches
size
PERCENT FINER SIEVE
number
size
PERCENT FINER SOIL DESCRIPTION
Clay very sandy silty red
1.5
3/4
1/2
3/8
100.0
100.0
100.0
100.0
97.3
95.9
95.0
10
20
40
60
100
200
92.9
92.1
90.9
88.6
86.6
83.7
56.8
GRAIN SIZE REMARKS
Tested By ill
Drj
D10
0.0801
COEFFICIENTS
C0
Cu
Souze Sample No RF7-S1
Client Jnternalional Uranium Coiporation
WESTERN COLORADO TESTING INC Project Soil Sample Testing
Project No 804899 Route 52

Updated Tailings Cover Design Report

APPENDIX A.1.7
WESTERN COLORADO TESTING, INC.
1999b
WESTERN 529 25 1/2 Road Suite B-lot
COLORADO Grand junction Colorado 81505
TESTING 970 241-7700 Fax [phone]
INC
May 1999
WCT 804899
International Uranium USA Corporation
Independence Plaza Suite 950
1050 17th street
Denver Colorado 80265
Subject soil Sample Testing
As requested we have completed the soil laboratory work for
International Uranium USA Corporation The testing performed
included the following
21 sieve Analyses
21 Atterberg Limit Tests
21 standard Proctor Tests ASTM D698
Hydrometer Tests
specific Gravity Tests
Data sheets are included for each test except for the specific
gravities The results of these are shown below
Samole Avg Bulk Avg Bulk Specific Apparent Absorption
Soecific Gravity Gravity SSD Soecific Gravity Percent
C2 TS1 2.337 2.468 2.673 5.372
C2 T52 2.137 2.392 2.868 11.926
C2 T53 2.157 2.359 2.705 9.396
C2 T54 2.265 2.432 2.721 7.402
C3 TS1 2.456 2.562 2.746 4.294
C3 TS2 2.349 2.464 2.655 4.900
Page
international Uranium USA Corporation
CT 804899
May 1999
We have been happy to be of service If you have any questions
or we may be of further assistance please call
Respectfully Submitted
1EESTflN COLOflDO TESTING INC
Wm Daniel Smith P.E
senior Geatechnical Engineer
WDS /xth
MsbioSO48LO5O4
102
10
Water content
Test specification ASTM 69891 Procedure Standard
Oversize correction applied to each point
ZAV for
Sp.C
2.65
Elev/
Depth
Classification Not
Moist Sp.G LL P1
No.4 No.200USCSAASHTO
N/A 2.65
ROCK CORRECTED TEST RESULTS UNCORRECTED MATERIAL DESCRIPTION
Maximum dry density 109.2 pcf
Optimum moisture 15.2
109.2 pcf
15.2
C2ST1
Project No 804899
Project International Uranium Corporation
Location Soil Sample Testing
Date 4/27/99
Remarks
SUBMITTED BY Client
TESTED BY JH
Fig No
MOISTUREDENSITY RELATIONSHIP TEST
WESTERN COLORADO TESTING INC
MOISTURE-DENSITY RELATIONSHIP TEST
112
110
.4-
108
.4
106
104
12 14 16 18 20 22
PARTICLE SIZE DISTRIBUTiON TEST REPORT
%GRAVEL SAND SILT CLAY JSCS AASHTO PL LL
6J
OA 75.9 19.3 4.8 SM
A-2-40 NP NPJ
SIEVE
thcfles
St
PERCENT FINER SIEVE
mmtscSt
PERCENT FINER SOIL DESCRIPTiON
SaS silty gabrown
1.5
3/4
1/2
3/8
100.0
100.0
100.0
100.0
100.0
100.0
100.0
10
20
40
60
100
200
100.0
100.0
98.7
94.1
77.5
46.8
24.1
060
D30
Djo
GRAIN SIZE REMARK
0TriH0.186
0.100
0.0241.E
C0
Cu
COEFFiCIENTS
2.25
7.74
Soume Sample No C2-ST1
Cm btanafioS thtum Ca
WESTERN COLORADO TESTING INC P6 Sod Sample TeSing
PitieS No 804899 Fbi 32
Lu
Lu
Lu
.4-
100
Iv
\98
94
17
Water content
Test specification ASTM 69891 Procedure Standard
Oversize correction applied to each point
Elev/
Depth
Classification Nat
Moist LL P1
No.4 No.200USCSAAASHTO
2.65
ROCK CORRECTED TEST RESULTS UNCORRECTED MATERIAL DESCRIPTION
Maximum dry density 103.5 pcf
Optimum moisture 20.8
103.5 pcf
20.8
C2TS2
Project No 8.899
Project International Uranium Corporation
Location Soil Sample Testing
Date 4/27199
Remarks
SUBMITTED BY Client
TESTED BY JH
Fig No
MOISTUREDENSITY RELATIONSHIP TEST
WESTERN COLORADO TESTING INC
104
102
MOISTURE-DENSITY RELATIONSHIP TEST
ZAV for
Sp .0
65
96
18 19 20 21 22 23
0.0 17.3 70.2 12.5 vfi4 A-40 29 29
SIEVE PERCENT FINER SIEVE PERCENT FINER SOIL DESCRIPTiON
kicSs matter SiI claycy inty ay
e2e
100.0 100.0
100.0 10 100.0
1.5 100.0 20 99.9
100.0 40 99.4
3/4 100.0 60 97.8
1/2 100.0 100 94.3
3/8 100.0 200 82.7
GRAIN SIZE REMARKS
D60 0.0264 Teed By JR
D30 0.0170
D10
COEFFICIENTS
Cc
Cu
Source Sample No C2-TS2
Curt hinticoth Uranzmccrposicn
WESTERN COLORADO TESTING INC Soil Sample Testing
PrcjsctNo 804899 Fat 33
PARTICLE SIZE DISTRIBUTION TEST REPORT
LU
%3 %QRAVEL SILT %CLAY USCS AASHTO PU LU
.4S
112
MOISTURE-DENSITY RELATIONSHIP TEST
Water content
Test specification ASTM 69891 Procedure Standard
Oversize correction applied to each oint
Elev/
Depth
Classification Not
Moist Sp.G LL P1
No.4 No.200USCS.AASHTO
N/A 2.65
ROCK CORRECTED TEST RESULTS UNCORRECTED MATERIAL DESCRIPTION
Maximum dry density 110.4 pef
Optimum moisture 16.0
110.4 pcf
16.0
C2TS3
Project No eos99
Project International Uranium Corporation
Location Soil Sample Testing
Date 4/27/99
Remarks
SUBMITT BY Client
TESTED BY JH
Fig No
MOISTUREDENSITY RELATIONSHIP TEST
WESTERN COLORADO TESTING INC
110
.4-
106
104
102
12 14 16 18 20 22 24
ZAV for
Sp
65
PARTICLE SIZE DISTRIBUTION TEST REPORT
%GRAVEL %SAND %SILT
0.0 67.3 23.2 9.5 SM A-2-40 NP NP
SIEVE
ks
PERCENT FINER SIEVE
nIu
PERCENT FINER SOIL DESCRIPTION
0ttcntown
1.5
3/4
1/2
3/8
100.0
100.0
100.0
100.0
100.0
100.0
100.0
10
20
40
60
100
200
100.0
100.0
98.9
94
86.9
59.6
32.7
D60
P30
D10
GRftJN SIZE REMARKS
OTaSedByJH11151
0.0425
0.0084
COEFFAENTS
Cc
Cu
1.42
18.03
Source Sample No C2-TS3
btcaticoth UCapaation
WESTERN COLORADO TESTING INC Pmje Soil Sample Testing
ERmiect No 804899 Flours 34
Ui
C-
Iii
a-
%CL.AY USCS JAASHTO PL LL
108
106
104
.4
102
100
MOISTURE-DENSITY RELATIONSHIP TEST
ZAV for
Sp
2.65
98
14
Water content
Test specification ASTM 69891 Procedure Standard
Oversize correction applied to each point
Elev/
Depth
Classification Nat
Moist Sp.G LL P1
No.4 No.200USCSAASHTO
N/A 2.65
ROCK CORRECTED TEST RESULTS UNCORRECTED MATERIAL DESCRIPTION
Maximum dry density 1O74 pcf
Optimum moisture 16.8
107.4 pcf
16.8
C2TS4
Project No 804899
Project International Uranium Corporation
Location Soil Sample Testing
Date 4/27/99
Remarks
SUBMITTED BY Client
TESTED BY .JH
Fig No
MOISTUREDENSITY RELATIONSHIP TEST
WESTERN COLORADO TESTTNC INC
16 18 20 22 24 26
PARTICLE SIZE DISTRIBUTION TEST REPORT
%GRAVEL 4%SAND SILT CLAY USCS AASHTO PL LL
0.0 67.8 28.7 3.5 SM
A-2-40 ThP NIJ
SIEVE
kiches
PERCENT FINER SIEVE
nwtsr
PERCENT FINER SOIL DESCRIPTION
Send ty gay/frown
2.5
3/4
1/2
3/8
100.0
100.0
100.0
100.0
100.0
100.0
1010
10
20
40
60
100
200
100.0
99.8
99.4
97.8
85.4
54.4
32.2
GRAIN SIZE REMARKS
TesadSyt JR
Dx
D10
0.164
0.0376
0.0189
Cc
Cu
COEFFICIENTS
0.45
8.69
Source Sample No C2-TS4
Mmficnth UCorpcnlion
WESTERN COLORADO TESTING1 INCa Project Soil Sample Testing
No 804899
C-
108
MOISTUREDENSITY RELATIONSHIP TEST
98
10
Water content
Test specification ASTM 69891 Procedure Standard
Oversize correction applied to each ooint
Elev/
Depth
Classification Nat
Moist Sp.G LL P1
No.4 No.200USCSAASHTO
N/A 2.65
ROCK CORRECTED TEST RESULTS UNCORRECTED MATERIAL DESCRIPTION
Maximum dry density 105.7 pcf
Optimum moisture 16.0
105.7 pcf
16.0
C3-TS1
Project No 804899
Project International Uranium Corporation
Location Soil Sample Testing
Date 4/27/99
Remarks
SUBMITTED BY Client
TESTED BY JH
Fig No
MOISTUREDENSITY RELATIONSHIP TEST
WESTERN COLORADO TESTING INC
106
.4-
104
4-
102
100
ZAV for
Sp.G
2.65
12 14 16 18 20 22
PARTICLE SIZE DISTRIBUTION TEST REPORT
0.0 39.2 60.3 0.5 ML A-40 NP NP
SIEVE
Sties
Sn
PERCENT FINER SIEVE
number
Sn
PERCENT FINER SOII DESCRIPTION
SiIt ssthy trown
1.5
3/4
1/2
3/8
100.0
100.0
100.0
100.0
100.0
100.0
100.0
10
20
4060
100
200
100.0
100.0
99.9
99.1
96.3
87.8
60.8
GRAiN SIZE REMARKS
OTetSytJH
_______________________________
060
D30
D10
0.0738
0.0364
0.0166
COEFFICIENT
1.08
4.45
Source Sample No C3-TS1
Ct btunaliooth UCpcntion
WESTERN COLORADO TES11NG INCa Prcjsct Soil Sample Testing
PmiNo 804899 Fan 36
Lii
%3 I%GRAVELI %SAND %SILT %CLAY USCS IAASHTOPLILL
108
MOISTURE-DENSITY RELATIONSHIP TEST
98
10
Water content
Test specification ASTM 69891 Procedure Standard
Oversize correction applied to each point
EIev/
Depth
Classification Nat
Moist Sp.G LL P1
No.4 No.200USCSAASHTO
N/A 2.65
ROCK CORRECTED TEST RESULTS UNCORRECTED MATERIAL DESCRIPTION
Maximum dry density 105.4 pcf
Opt imum moisture 15.3
105.4 pcf
15.3
C3-TS2
Project No 804899
Project International Uranium Corporation
Location Soil Sample Testing
Date 4/27/99
Remarks
SUBMITTED BY Client
TESTED BY JH
Fig No
MOISTUREDENSITY RELATIONSHIP TEST
WESTERN COLORADO TESTING INC
106
C-
104
102
100
ZAV for
2.65
12 14 16 18 20 22
PARTICLE SIZE DISTRIBUTION TEST REPORT
%GRAVEL %SAND SUJ iCLAY uscs MSHTO PL
0.0 77.0 16.9 6.1 SM A-2-40
NP NP
SIEVE
Idius
ss
PERCENT FINER SIEVE
nuntur
PERCENT FINER 0-DESCRIPTiON
SaS silty gratown
1.5
3/4
1/2
3/8
100.0
100.0
100.0
1010
100.0
100.0
100.0
10
20
4060
100
200
100.0
99.9
99A
946
78.1
46.9
23.0
GRAiN REMARKS
OTfldByiHD50
Dao
D10
0.185
0.102
0.0260
COEFFICIENTS
C0 2.16
7.12
Source Sample No C3-TS2
jean nSHJtCopcnfion
WESTERN COLORADO TESTING INC Prced Soil Sample Testing
IPruleetNo 804899 Fn 37
LU
I-
LU
LU

Updated Tailings Cover Design Report

APPENDIX A.2
ADVANCED TERRA TESTING, INC.
2010

MOISTURE CONTENT
ASTMD2216
Moisture Content Determinations
ASTM D 2216
CLIENT: MWH
LOCATION: Denison White Mesa Project
Page 1 of 2
BORING Stockpile 1
SAMPLE DEPTH 5.0'
SAMPLE NO. A South
DATE SAMPLED 10/12/10
DATE TESTED 10/23/10 LB
SOIL DESCRIPTION 1009740
MOISTURE DETERMINATIONS
Wt. of Wet Soil & Dish (gms) 168.75
Wt. of Dry Soil & Dish (gms) 161.67
Net Loss of Moisture (gms) 7.08
Wt. of Dish (gms) 3.04
Wt. of Dry Soil (gms) 158.63
Moisture Content(%) 4.5
----------------------------------------------------------------------------
BORING
SAMPLE DEPTH
SAMPLE NO.
DATE SAMPLED
DATE TESTED
SOIL DESCRIPTION
MOISTURE DETERMINATIONS
Wt. of Wet Soil & Dish (gms)
Wt. of Dry Soil & Dish (gms)
Net Loss of Moisture (gms)
Wt. of Dish (gms)
Wt. of Dry Soil (gms)
Moisture Content(%)
Data entered by:
Data checked by:J2/!!!J
FileName:
Stockpile 4
5.0'
A
10/12/10
10/23/10 LB
1009740
124.09
108.90
15.19
3.14
105.76
14.4
BKL Date:
Date: / ~/4/r"?J
MHN053 A
Stockpile 1
12.0'
B South
10/12/10
10/23/10 LB
1009740
189.58
179.59
9.99
3.16
176.43
5.7
Stockpile 5
6.0'
A
10/12/10
10/23/10 LB
1009740
129.19
122.37
6.82
3.07
119.30
5.7
JOB NO.: 2521-53
Stockpile 2 Stockpile 3
5.0' 6.0'
A A
10/12/10 10/12/10
10/23/10 LB 10/23/10 LB
1009740 1009740
140.80 159.75
129.88 146.78
10.92 12.97
3.08 3.02
126.80 143.76
8.6 9.0
Stockpile 6 Stockpile 7
2.0' 0
A A
10/12/10 10/12/10
10/23/10 LB 10/23/10 LB
1009740 1009740
176.52 135.98
164.58 130.35
11.94 5.63
3.30 3.04
161.28 127.31
7.4 4.4
Moisture Content Determinations
ASTM D 2216
CLIENT: MWH
LOCATION: Denison White Mesa Project
Page 2 of 2
BORING
SAMPLE DEPTH
SAMPLE NO.
DATE SAMPLED
DATE TESTED
SOIL DESCRIPTION
MOISTURE DETERMINATIONS
Wt. of Wet Soil & Dish (gms)
Wt. of Dry Soil & Dish (gms)
Net Loss of Moisture (gms)
Wt. ofDish (gms)
Wt. of Dry Soil (gms)
Moisture Content(%)
BORING
SAMPLE DEPTH
SAMPLE NO.
DATE SAMPLED
DATE TESTED
SOIL DESCRIPTION
MOISTURE DETERMINATIONS
Wt. of Wet Soil & Dish (gms)
Wt. of Dry Soil & Dish (gms)
Net Loss of Moisture (gms)
Wt. of Dish (gms)
Wt. of Dry Soil (gms)
Moisture Content(%)
Data entered by:
Data checked by: #/ /J'1
File Name:
Stockpile 8
5.0'
A
10/12/10
10/23/10 LB
1009740
151.72
139.81
11.91
3.04
136.77
8.7
Stockpile 12
5.0'
A
10/12/10
10/23/10 LB
1009740
138.36
127.42
10.94
3.11
124.31
8.8
BKL Date:
Date: I eJ (u,/tt>
MHN053AB
Stockpile 9
O'
A
10/12/10
10/23/10 LB
1009740
156.77
151.93
4.84
3.04
148.89
3.3
Stockpile 13
O'
A
10/12/10
10/23/10 LB
1009740
155.25
143.36
11.89
3.28
140.08
8.5
JOB NO.: 2512-53
Stockpile 10
5.0'
A
10/12/10
10/23/10 LB
1009740
120.43
114.57
5.86
3.11
111.46
5.3
Stockpile 11
O'
A
10/12/10
10/23/10 LB
1009740
161.56
154.98
6.58
3.29
151.69
4.3
SPECIFIC GRAVITY TEST
ASTMD854
SPECIFIC GRAVITY TESTS ASTM D 854
CLIENT: MWH
SOIL DESCR. 1009740
BORING NO. Stockpile 8
DEPTH 5.0'
SAMPLE NO. A
DATE SAMPLED
DATE TESTED 11/17/10 MLM
Pycnometer #
Big 1
Weight of oven dry soil 108.770
(g) (Wo)
Weight of flask, soil, 739.740
and water. (g) (Wb)
Temperature (deg. C) 25.3
(Tx)
Weight of water & flask 671.632
at Tx (from cal. curve)(Wa)
Specific Gravity* 2.67
*Specific Gravity= Wo/[Wo+(Wa-Wb)]
Data entry by: MLM
Data checked by: fY<c__
FileName: MHEOS814
Date:
Date: 11/f/;o I
JOB NO. 2512-53
LOCATION Denison White Mesa Mill Project
Stockpile 1 Stockpile 4
5.0' 5.0'
A-South A
11/17/10 MLM 11/17/10 MLM
Big 9 Big 10
105.460 91.720
740.170 730.080
25.3 25.4
674.591 671.815
2.64 2.74
11/18/2010
ATTERBERG LIMITS
ASTMD 4318
ATTERBERG LIMITS TEST
ASTM p 4318
CLIENT
BORING NO.
DEPTH
SAMPLE NO.
SOIL DESCR.
LOCATION
Plastic Limit
Determination
Wt Dish & Wet Soil
Wt Dish & Dry Soil
Wt of Moisture
Wt of Dish
Wt of Dry Soil
Moisture Content
MWH
Stockpile 1
5.0'
A South
1009740
Denison White Mesa Mill Project
NON-PLASTIC
Liquid Limit
Determination
Device Number 1075
Number of Blows
Wt Dish & Wet Soil
Wt Dish & Dry Soil
Wt of Moisture
Wt of Dish NON-PLASTIC
Wt of Dry Soil
Moisture Content
Liquid Limit NP
Plastic Limit NP
Plasticity Index NP
Atterberg Classification
Data entry by:
Checked by: Li;
FileName:
NP
MLM Date: 11/08/2010
Date: I,,.. 04-1 D
MHGOS15A
JOB NO. 2512-53
DATE SAMPLED
DATE TESTED
10/12/10 --
11/08/10 MLM
ATTERBERG LIMITS TEST
ASTM D 4318
CLIENT MWH
Stockpile 1
12.0'
B South
1009740
BORING NO.
DEPTH
SAMPLE NO.
SOIL DESCR.
LOCATION Denison White Mesa Mill Project
Plastic Limit
Determination
Wt Dish & Wet Soil
Wt Dish & Dry Soil
Wt of Moisture
Wt of Dish
Wt of Dry Soil
Moisture Content
1
12.25
11.15
1.10
1.14
10.01
10.99
Liquid Limit Device Number 1075
Determination
Number of Blows
Wt Dish & Wet Soil
Wt Dish & Dry Soil
Wt of Moisture
Wt of Dish
Wt of Dry Soil
Moisture Content
Liquid Limit
Plastic Limit
Plasticity Index
Atterberg Classification
Data entry by:
Checked by: llKL
FileName:
23.3
11.2
12.1
1
33
12.90
10.77
2.13
1.12
9.65
22.07
CL
MLM Date:
Date:
MHGOS1BS
2 3
12.02 11.89
10.92 10.80
1.10 1.09
1.14 1.14
9.78 9.66
11.25 11.28
2 3
29 25
11.80 12.19
9.83 10.09
1.97 2.10
1.15 1.13
8.68 8.96
22.70 23.44
11/09/2010
11/q /10 ~~
JOB NO. 2512-53
DATE SAMPLED
DATE TESTED
4
21
11.65
9.63
2.02
1.16
8.47
23.85
5
19
12.34
10.15
2.19
1.14
9.01
24.31
10/12/10
11/08/10 MLM
25
24
'E Q) -c 0 ()
~ 23
:::l -.!a 0 2
22
21
80
60
/
/ ""
20
/ ,, CL-ML ~
0 /
0 20
Atterberg Limits, Flow Curve
Stockpile 1, 12.0', B South
11111\
~~
~
~-~
Number of Blows 25
PLASTICITY CHART
Stockpile 1, 12.0', B South
/
I/
/ lJH or UH
I/ / /
/ / v ~<,;,.
\>"\;
CL or 1 DL v /'
/ v MHc rOH
~ Ml orOL
40 60
Liquid Limit
80
I .11. Classification I
1\
'\
I\
11111
v/
100
/
/ /
120
ATTERBERG LIMITS TEST
ASTM D 4318
CLIENT MWH
Stockpile 2
5.0'
A
1009740
BORING NO.
DEPTH
SAMPLE NO.
SOIL DESCR.
LOCATION Denison White Mesa Mill Project
Plastic Limit
Determination
Wt Dish & Wet Soil
Wt Dish & Dry Soil
Wt of Moisture
Wt of Dish
Wt of Dry Soil
Moisture Content
1
10.04
8.91
1.13
1.14
7.77
14.54
Liquid Limit
Determination
Device Number 1080
Number of Blows
Wt Dish & Wet Soil
Wt Dish & Dry Soil
Wt of Moisture
Wt of Dish
Wt of Dry Soil
Moisture Content
Liquid Limit
Plastic Limit
Plasticity Index
Atterberg Classification
Data entry by:
Checked by: l¢llL_
FileName:
30.3
14.4
15.9
30
11.02
8.77
2.25
1.14
7.63
29.49
CL
MLM Date:
Date:
MHG0250A
2
11.59
10.25
1.34
1.15
9.10
14.73
2
25
10.83
8.59
2.24
1.14
7.45
30.07
3
3
11.84
10.53
1.31
1.15
9.38
13.97
23
10.45
8.25
2.20
1.13
7.12
30.90
10/28/2010 ttp8f;o
JOB NO. 2512-53
DATE SAMPLED
DATE TESTED
4
21
10.66
8.41
2.25
1.16
7.25
31.03
5
16
11.50
8.98
2.52
1.15
7.83
32.18
10/12/10
10/27/10 MLM
33
32
-c Q) -c 0 () 31 Q) ..... :l ~ 0 ::2:
30
29
80
60
/
/ 20
/
~ Cl-Ml ~
0 /
0 20
Atterberg Limits, Flow Curve
Stockpile 2, 5.0', A
~
I\
\
I\ 1111
,\
\
f \
Number of Blows 25
PLASTICITY CHART
Stockpile 2, 5.0', A
v v
IV vH or UH
v / / v / V" ~~ l>-'v
CL or )L //
.. / /
/ Ml orOL
40 60
Liquid Limit
I &.. Classification I
MHc rOH
80
I\._
""
/
/~
100
/
/ /
120
ATTERBERG LIMITS TEST
ASTM D 4318
CLIENT
BORING NO.
DEPTH
SAMPLE NO.
SOIL DESCR.
LOCATION
Plastic Limit
Determination
Wt Dish & Wet Soil
Wt Dish & Dry Soil
Wt of Moisture
Wt of Dish
Wt of Dry Soil
Moisture Content
MWH
Stockpile 3
6.0'
A
1009740
Denison White Mesa Mill Project
1 2 3
10.49 10.76
9.36 9.55
1.13 1.21
1.13 1.14
8.23 8.41
13.73 14.39
10.76
9.53
1.23
1.15
8.38
14.68
Liquid Limit Device Number 0860
Determination
Number of Blows
Wt Dish & Wet Soil
Wt Dish & Dry Soil
Wt of Moisture
Wt of Dish
Wt of Dry Soil
Moisture Content
Liquid Limit
Plastic Limit
Plasticity Index
Atterberg Classification
Data entry by:
Checked by: Bt<L.
FileName:
33.2
14.3
18.9
35
14.74
11.45
3.29
1.16
10.29
31.97
CL
MLM Date:
Date:
MHG0360A
2 3
16 25
15.36 14.95
11.70 11.53
3.66 3.42
1.17 1.16
10.53 10.37
34.76 32.98
10/28/2010
/0 /;;.8 /f.O
JOB NO. 2512-53
DATE SAMPLED
DATE TESTED
4
20
17.60
13.41
4.19
1.13
12.28
34.12
10/12/10
10/27/10 PW
35
34
-c: $ c: 0 ()
~ 33
:::i ~ 0 ::;?
32
31
80
60
/
/ 20
/
j' CL-ML ~
0 ./
0 20
Atterberg Limits, Flow Curve
Stockpile 3, 6.0', A
r~
1~.
~
~
·~
Number of Blows 25
PLASTICITY CHART
Stockpile 3, 6.0', A
/
I/
/ GH or µH
/ / /
/ / v,~~ \>-'\,:
CL or 1 DL
/ v
.A v MHc rOH
/
/' Ml orOL
40 60
Liquid Limit
80
I & Classification I
I~
""' ~
/
J///'
100
/
/
120
ATTERBERG LIMITS TEST
ASTM D 4318
CLIENT
BORING NO.
DEPTH
SAMPLE NO.
SOIL DESCR.
LOCATION
Plastic Limit
Determination
Wt Dish & Wet Soil
Wt Dish & Dry Soil
Wt of Moisture
Wt of Dish
Wt of Dry Soil
Moisture Content
MWH
Stockpile 4
5.0'
A
1009740
Denison White Mesa Mill Project
1 2 3
10.11 10.31
8.88 9.06
1.23 1.25
1.14 1.16
7.74 7.90
15.89 15.82
10.26
9.02
1.24
1.14
7.88
15.74
Liquid Limit Device Number 0860
Determination
Number of Blows
Wt Dish & Wet Soil
Wt Dish & Dry Soil
Wt of Moisture
Wt of Dish
Wt of Dry Soil
Moisture Content
Liquid Limit
Plastic Limit
Plasticity Index
Atterberg Classification
Data entry by:
Checked by: /J,/(L
FileName:
40.2
15.8
24.4
1 2 3
35 30 26
16.36 18.13 17.07
12.18 13.37 12.48
4.18 4.76 4.59
1.14 1.15 1.15
11.04 12.22 11.33
37.86 38.95 40.51
CL
Date: / ,/ 11/04/2010
Date: // L/ t.f o
MHGOS45A 1 '
MLM
JOB NO. 2512-53
DATE SAMPLED
DATE TESTED
4
20
16.99
12.31
4.68
1.14
11.17
41.90
5
15
15.30
11.04
4.26
1.15
9.89
43.07
10/12/10
11/03/10 PW
44
43
42
-c .$ 41 c 0 ()
~ ::J 1i) 40 ·o
:2
39
38
37
80
60
I/
/ 20
/ _, CL-ML ~
0 /
0 20
Atterberg Limits, Flow Curve
Stockpile 4, 5.0', A
·"" ~
~-I'.
~ ~ -"--
'~
Number of Blows 25
PLASTICITY CHART
Stockpile 4, 5.0', A
I/
I/
I/ GH or UH
/ / /
/ / V" ~<v ~0
CL or ~L v / v MHc rOH
/
./ Ml orOL
40 60
Liquid Limit
80
I & Classification I
I~ ~
""-
II
/ vv
100
/ v
120
ATTERBERG LIMITS TEST
ASTM D 4318
CLIENT MWH
Stockpile 5
6.0'
A
1009740
BORING NO.
DEPTH
SAMPLE NO.
SOIL DESCR.
LOCATION Denison White Mesa Mill Project
Plastic Limit
Determination
Wt Dish & Wet Soil
Wt Dish & Dry Soil
Wt of Moisture
Wt of Dish
Wt of Dry Soil
Moisture Content
1
9.49
8.31
1.18
1.14
7.17
16.46
Liquid Limit Device Number 1080
Determination
Number of Blows
Wt Dish & Wet Soil
Wt Dish & Dry Soil
Wt of Moisture
Wt of Dish
Wt of Dry Soil
Moisture Content
Liquid Limit
Plastic Limit
Plasticity Index
Atterberg Classification
Data entry by:
Checked by: /Jk.L
FileName:
26.2
16.3
9.9
35
11.37
9.28
2.09
1.12
8.16
25.61
CL
MLM Date:
Date:
MHG0560A
2
11.27
9.85
1.42
1.14
8.71
16.30
2
22
10.88
8.84
2.04
1.11
7.73
26.39
3
3
9.56
8.39
1.17
1.13
7.26
16.12
25
10.57
8.62
1.95
1.15
7.47
26.10
10/28/2010
;o/,;i, f//'c)
JOB NO. 2512-53
DATE SAMPLED
DATE TESTED
4
29
10.50
8.57
1.93
1.12
7.45
25.91
5
30
11.34
9.23
2.11
1.07
8.16
25.86
10/12/10
10/27/10 MLM
27
25
80
60
/
/ 20
/ -,, CL-ML ~
0 /
0 20
Atterberg Limits, Flow Curve
Stockpile 5, 6.0', A
Ill!
~
I~
Number of Blows 25
PLASTICITY CHART
Stockpile 5, 6.0', A
/
/
/ vM or UM
/ v /
/ / v,~<,;,, \>-'\;
CL or 1 DL v / v MHc rOH
/
./ Ml orOL
40 60
Liquid Limit
80
[ A Classification I
' ~I
/ vv
100
/
/
120
ATTERBERG LIMITS TEST
ASTM D 4318
CLIENT
BORING NO.
DEPTH
SAMPLE NO.
SOIL DESCR.
LOCATION
Plastic Limit
Determination
Wt Dish & Wet Soil
Wt Dish & Dry Soil
Wt of Moisture
Wt of Dish
Wt of Dry Soil
Moisture Content
MWH
Stockpile 6
2.0'
A
1009740
Denison White Mesa Mill Project
2
7.04 7.01
6.40 6.39
0.64 0.62
1.15 1.12
5.25 5.27
12.19 11.76
Liquid Limit Device Number 1075
Determination
Number of Blows
Wt Dish & Wet Soil
Wt Dish & Dry Soil
Wt of Moisture
Wt of Dish
Wt of Dry Soil
Moisture Content
Liquid Limit
Plastic Limit
Plasticity Index
Atterberg Classification
Data entry by:
Checked by: ed....--
FileName:
23.0
12.0
11.0
2 3
25 16 27
16.70 21.03 20.01
13.80 16.91 16.54
2.90 4.12 3.47
1.14 1.14 1.13
12.66 15.77 15.41
22.91 26.13 22.52
CL
LB Date: 11/04/2010
Date: ,,/,<1/,6
MHGOCKP6 '
JOB NO. 2512-53
DATE SAMPLED
DATE TESTED 11/03/10 LB
27
26
-c: 25 Q) -c: 0 u
Q) ..... ::::J ~ 24 0 ~
23
22
80
60
/
/ IA
20
/
/' CL-ML .-
0 /
0 20
Atterberg Limits, Flow Curve
Stockpile 6, 2.0', A
~
\
\
I\
\ II\_
-
Number of Blows 25
PLASTICITY CHART
Stockpile 6, 2.0', A
/
/
/ vM or UM
/ / /
/ / / \~y,,
1><'-'
CL or ( DL / / v MHc rOH
/ ,_......,. Ml orOL
40 60
Liquid Limit
80
f &. Classification I
/
/ /
v~
100 120
ATTERBERG LIMITS TEST
ASTM D 4318
CLIENT
BORING NO.
DEPTH
SAMPLE NO.
SOIL DESCR.
LOCATION
Plastic Limit
Determination
Wt Dish & Wet Soil
Wt Dish & Dry Soil
Wt of Moisture
Wt of Dish
Wt of Dry Soil
Moisture Content
MWH
Stockpile 7
0.0
A
1009740
Denison White Mesa Mill Project
2
7.12 7.12
6.46 6.47
0.66 0.65
1.16 1.16
5.30 5.31
12.45 12.24
Liquid Limit Device Number 1075
Determination
Number of Blows
Wt Dish & Wet Soil
Wt Dish & Dry Soil
Wt of Moisture
Wt of Dish
Wt of Dry Soil
Moisture Content
Liquid Limit
Plastic Limit
Plasticity Index
Atterberg Classification
Data entry by: I "-
Checked by:_l..-_v_
FileName:
25.9
12.3
13.5
2 3
15 18 24
10.39 10.65 10.74
8.36 8.60 8.74
2.03 2.05 2.00
1.14 1.11 1.12
7.22 7.49 7.62
28.12 27.37 26.25
CL
MLM Date: 11/08/2010
Date: l l-o4 -\O
MHGOS70A
JOB NO. 2512-53
DATE SAMPLED
DATE TESTED
4
32
10.21
8.42
1.79
1.15
7.27
24.62
10/12/10
11/05/10 BKL
29
28
-c: 27 .$ c: 0 ()
~ ::i ]2 26 0
2
25
24
80
60
/
/ A
20
/
./' CL-ML .-
0 /
0 20
Atterberg Limits, Flow Curve
Stockpile 7, 0.0, A
." ~
~ I~
' ~
~
Number of Blows 25
PLASTICITY CHART
Stockpile 7, 0.0, A
I/
/
/ vM or µr;
/ / v
I/ / /~<:,.
l>-"v
CL or )L / ./
/ MHc rOH
/
../ Ml orOL
40 60
Liquid Limit
80
I A Classification I
'\ ~ ~ •
/
/ /
V"
100 120
ATTERBERG LIMITS TEST
ASTM D 4318
CLIENT MWH
Stockpile 8
5.0'
A
1009740
BORING NO.
DEPTH
SAMPLE NO.
SOIL DESCR.
LOCATION Denison White Mesa Mill Project
Plastic Limit
Determination
Wt Dish & Wet Soil
Wt Dish & Dry Soil
Wt of Moisture
Wt of Dish
Wt of Dry Soil
Moisture Content
8.47
7.74
0.73
1.15
6.59
11.08
Liquid Limit Device Number 1080
Determination
Number of Blows
Wt Dish & Wet Soil
Wt Dish & Dry Soil
Wt of Moisture
Wt of Dish
Wt of Dry Soil
Moisture Content
Liquid Limit
Plastic Limit
Plasticity Index
Atterberg Classification
Data entry by:
Checked by: /$KL
FileName:
28.0
10.6
17.3
16
10.61
8.49
2.12
1.11
7.38
28.73
CL
MLM Date:
Date:
MHGOS850
2
8.40
7.73
0.67
1.14
6.59
10.17
2
22
9.91
7.97
1.94
1.12
6.85
28.32
3
3
8.40
7.70
0.70
1.15
6.55
10.69
29
7.88
6.41
1.47
1.11
5.30
27.74
11/09/2010
119/JO
JOB NO. 2512-53
DATE SAMPLED
DATE TESTED
4
35
13.93
11.20
2.73
1.16
10.04
27.19
10/12/10
11/08/10 TMR
-c $ c 0 ()
29
~ 28
~ 0 ::;i;
27
80
60
20
0
0
/
/ Ji..
/
~ CL-ML ~
/
20
Atterberg Limits, Flow Curve
Stockpile 8, 5.0', A
~ ~
~ ~
~ ~ 1111
Number of Blows 25
PLASTICITY CHART
Stockpile 8, 5.0', A
i/
I/
/ vH or VH
/ / /
I/ / v ,~~
\>-"\;
CL or1 DL /v v MHc rOH
/
~ Ml orOL
40 60
Liquid Limit
80
I Ji.. Classification I
~
~
II
~
v~
100
/
/
120
ATTERBERG LIMITS TEST
ASTM D 4318
CLIENT
BORING NO.
DEPTH
SAMPLE NO.
SOIL DESCR.
LOCATION
Plastic Limit
Determination
Wt Dish & Wet Soil
Wt Dish & Dry Soil
Wt of Moisture
Wt of Dish
Wt of Dry Soil
Moisture Content
MWH
Stockpile 9
0.0'
A
1009740
Denison White Mesa Mill Project
2 3
10.28 10.65
8.97 9.31
1.31 1.34
1.14 1.13
7.83 8.18
16.73 16.38
12.42
10.83
1.59
1.14
9.69
16.41
Liquid Limit Device Number 1080
Determination
Number of Blows
Wt Dish & Wet Soil
Wt Dish & Dry Soil
Wt of Moisture
Wt of Dish
Wt of Dry Soil
Moisture Content
Liquid Limit
Plastic Limit
Plasticity Index
Atterberg Classification
Data entry by:
Checked by: l?:>Kl-
FileName:
23.1
16.5
6.6
1 2 3
33 30 18
12.52 11.80 11.75
10.50 9.87 9.64
2.02 1.93 2.11
1.16 1.14 1.12
9.34 8.73 8.52
21.63 22.11 24.77
CL-ML
Date: ,) 0/28/2010
Date: Jo/J.~o
MHG090A '
MLM
JOB NO. 2512-53
DATE SAMPLED
DATE TESTED
4
20
10.46
8.63
1.83
1.14
7.49
24.43
10/12/10
10/27/10 MLM
26
25
-c 24 Q) -c 0 0
~ :::i ~ 23 0 :::;:
22
21
80
60
/
/ 20
/
./ CL-ML -.-
0 /
0 20
Atterberg Limits, Flow Curve
Stockpile 9, 0.0', A
~\
'llll
\
\
\
\
Number of Blows 25
PLASTICITY CHART
Stockpile 9, 0.0', A
/
/
/ vri or ~t1
/ / /
/ / / ,~<c-\>'\;
CL or )L
/ /
/ MHc rOH v
,/ Ml orOL
40 60
Liquid Limit
80
I Jt.. Classification I
I\\
I'm
~
V'
100
/
~ v
120
ATTERBERG LIMITS TEST
ASTM D 4318
CLIENT
BORING NO.
DEPTH
SAMPLE NO.
SOIL DESCR.
LOCATION
Plastic Limit
Determination
Wt Dish & Wet Soil
Wt Dish & Dry Soil
Wt of Moisture
Wt of Dish
Wt of Dry Soil
Moisture Content
MWH
Stockpile 1 O
5.0'
A
1009740
Denison White Mesa Mill Project
1 2 3
11.61 12.10
10.05 10.40
1.56 1.70
1.15 1.08
8.90 9.32
17.53 18.24
11.57
9.95
1.62
1.06
8.89
18.17
Liquid Limit Device Number 0860
Determination
Number of Blows
Wt Dish & Wet Soil
Wt Dish & Dry Soil
Wt of Moisture
Wt of Dish
Wt of Dry Soil
Moisture Content
Liquid Limit
Plastic Limit
Plasticity Index
Atterberg Classification
Data entry by:
Checked by: @/;
File Name:
21.9
18.0
3.9
1 2 3
34 20 25
14.92 15.72 17.87
12.64 12.93 14.89
2.28 2.79 2.99
1.15 1.15 1.07
11.49 11.78 13.82
19.85 23.68 21.61
ML
MLM Date: /c 10/29/2010
Date: /C> .:l.Pt !;o
MHG0105A 1 1
JOB NO. 2512-53
DATE SAMPLED
DATE TESTED
10/12/10
10/28/10 PW
24
23
-c ~ 22
0 {,)
~ ~ '(5 21 ~
20
19
80
60
20
0
0
/
/
/ ,, CL-ML .-
/ -
20
Atterberg Limits, Flow Curve
Stockpile 10, 5.0', A
ii
\
I\
\
-~ \
Number of Blows 25
PLASTICITY CHART
Stockpile 10, 5.0', A
I/
I/
I/ vM or UM
/ / v
/ v v ~<;, ~\;
CL or~ DL //
/ MHc rOH
/
./ ML orOL
40 60
Liquid Limit
80
I A Classification I
\
\
\
~
/v
100
/
/ /
120
ATTERBERG LIMITS TEST
ASTM D 4318
CLIENT
BORING NO.
DEPTH
SAMPLE NO.
SOIL DESCR.
LOCATION
Plastic Limit
Determination
Wt Dish & Wet Soil
Wt Dish & Dry Soil
Wt of Moisture
Wt of Dish
Wt of Dry Soil
Moisture Content
MWH
Stockpile 11
0.0'
A
1009740
Denison White Mesa Mill Project
2 3
11.41 13.44
9.95 11. 71
1.46 1.73
1.14 1.12
8.81 10.59
16.57 16.34
12.03
10.55
1.48
1.15
9.40
15.74
Liquid Limit Device Number 1080
Determination
Number of Blows
Wt Dish & Wet Soil
Wt Dish & Dry Soil
Wt of Moisture
Wt of Dish
Wt of Dry Soil
Moisture Content
Liquid Limit
Plastic Limit
Plasticity Index
Atterberg Classification
Data entry by:
Checked by: i,f;
File Name:
20.9
16.2
4.7
1 2 3
33 29 23
16.83 14.89 14.74
14.22 12.55 12.37
2.61 2.34 2.37
1.14 1.14 1.15
13.08 11.41 11.22
19.95 20.51 21.12
CL-ML
MLM Date: 11/08/2010
Date: I l .. Oj -t1>
MHGOS11A
JOB NO. 2512-53
DATE SAMPLED
DATE TESTED
4
21
14.62
12.26
2.36
1.15
11.11
21.24
5
16
14.29
11.88
2.41
1.15
10.73
22.46
10/12/10
11/05/10 MLM
23
22
-c Q) -c 0 () 21 ~ :::s ~ 0 ~
20
19
80
60
I/
/ 20
/
~ CL-ML A ~
0 /
0 20
Atterberg Limits, Flow Curve
Stockpile 11, 0.0', A
Ill
~
~
" ~ ~ ~ -
Number of Blows 25
PLASTICITY CHART
Stockpile 11, 0.0', A
I/
/
/ \JM or µM
/ / v
/ v v,~~ \>"\;
CL or )L v ./
/ MHc rOH
/
./ Ml orOL
40 60
Liquid Limit
80
I Jr. Classification I
~ •
/v
100
/
/ v
120
ATTERBERG LIMITS TEST
ASTM D 4318
CLIENT
BORING NO.
DEPTH
SAMPLE NO.
SOIL DESCR.
LOCATION
Plastic Limit
Determination
Wt Dish & Wet Soil
Wt Dish & Dry Soil
Wt of Moisture
Wt of Dish
Wt of Dry Soil
Moisture Content
MWH
Stockpile 12
5.0'
A
1009740
Denison White Mesa Mill Project
1 2
13.07 15.00
11.56 13.25
1.51 1.75
1.13 1.12
10.43 12.13
14.48 14.43
Liquid Limit Device Number 1080
Determination
Number of Blows
Wt Dish & Wet Soil
Wt Dish & Dry Soil
Wt of Moisture
Wt of Dish
Wt of Dry Soil
Moisture Content
Liquid Limit
Plastic Limit
Plasticity Index
Atterberg Classification
Data entry by:
Checked by: BkL..
File Name:
32.1
14.5
17.6
2 3
35 31 25
10.60 10.67 10.86
8.40 8.41 8.51
2.20 2.26 2.35
1.15 1.13 1.15
7.25 7.28 7.36
30.34 31.04 31.93
CL
MLM Date: 10/28/2010
Date: /D/;;<814>
MHG01250 I
JOB NO. 2512-53
DATE SAMPLED
DATE TESTED
4
23
10.85
8.48
2.37
1.16
7.32
32.38
5
21
9.88
7.71
2.17
1.16
6.55
33.13
10/12/10
10/27/10 MLM
34
33
-c Q) -c 0 ()
Q) 32 ..... ::s ~ 0 :::;?
31
30
80
60
/
/ 20
./ ,, CL-ML ,.,
0 /
0 20
Atterberg Limits, Flow Curve
Stockpile 12, 5.0', A
1111
\
I\ .\
II\
Number of Blows 25
PLASTICITY CHART
Stockpile 12, 5.0', A
/
I/
/ vM or VM
/ / /
/ / v~~ t>'\;
CL or 1 DL v /
JJ. / MHc rOH
/
/ ML orOL
40 60
Liquid Limit
80
I JJ. Classification I
\
I\ •
/
;
vv
100
/
/
120
ATTERBERG LIMITS TEST
ASTM D 4318
CLIENT
BORING NO.
DEPTH
SAMPLE NO.
SOIL DESCR.
LOCATION
Plastic Limit
Determination
Wt Dish & Wet Soil
Wt Dish & Dry Soil
Wt of Moisture
Wt of Dish
Wt of Dry Soil
Moisture Content
MWH
Stockpile 13
0.0'
A
1009740
Denison White Mesa Mill Project
2 3
10.58 11.06
9.48 9.93
1.10 1.13
1.12 1.14
8.36 8.79
13.16 12.86
10.25
9.18
1.07
1.12
8.06
13.28
Liquid Limit Device Number 1080
Determination
Number of Blows
Wt Dish & Wet Soil
Wt Dish & Dry Soil
Wt of Moisture
Wt of Dish
Wt of Dry Soil
Moisture Content
Liquid Limit
Plastic Limit
Plasticity Index
Atterberg Classification
Data entry by:
Checked by: t!d<L.
FileName:
28.1
13.1
15.0
29
11.35
9.20
2.15
1.15
8.05
26.71
CL
MLM Date:
Date:
MHG0130A
2
26
11.77
9.48
2.29
1.16
8.32
27.52
3
17
11.20
8.77
2.43
1.15
7.62
31.89
10/28/2010 10/«l?/k.:J
JOB NO. 2512-53
DATE SAMPLED
DATE TESTED
10/12/10
10/27/10 MLM
33
32
31
c <I> -30 c: 0 (.)
~ :::l 11 29
0 2
28
27
26
80
60
/
/ &.
20
/
~ CL-ML ~
0 ./
0 20
Atterberg Limits, Flow Curve
Stockpile 13, 0.0', A
'\
I\
I\
\
\
\
~
\
Number of Blows 25
PLASTICITY CHART
Stockpile 13, 0.0', A
/
I/
/ vH or VH
/ / /
I/ / / ,~~
I'-""
CL or 1 DL JV v MHc rOH
/
/' Ml orOL
40 60
Liquid Limit
80
I &. Classification I
•
/~
100
/
/ /
120
MECllANICAL ANALYSIS
WITH HYDROMETER
ASTM D 422
CLIENT MWH
BORING NO.
DEPTH
SAMPLE NO.
SOIL DESCR.
LOCATION
MECHANICAL ANALYSIS-SIEVE TEST DATA
ASTM D422
Stockpile 1
5.0'
A South
1009740
Denison White Mesa Mill Project
JOB NO. 2512-53
SAMPLED
DATE TESTED
WASH SIEVE
DRY SIEVE
10/12/10 --
10/26/10 DPM
Yes
No
MOISTURE DAT A WASH SIEVE ANALYSIS
HYGROSCOPIC Yes
NATURAL No
Wt. Wet Soil & Pan (g)
Wt. Dry Soil & Pan (g)
Wt. Lost Moisture (g)
Wt. of Pan Only (g)
Wt. of Dry Soil (g)
Moisture Content %
Wt. Hydrom. Sample Wet (g)
Wt. Hydrom. Sample Dry (g)
Sieve Pan Ind iv.
Number Weight Wt.+ Pan
(Size) (g) (g)
3" 0.00 0.00
1 1/2" 0.00 0.00
3/4" 0.00 0.00
3/8" 0.00 6.84
#4 0.00 3.97
#10 0.00 7.86
#20 1.76 4.38
#40 1.79 13.48
#60 1.74 25.97
#100 1.77 11.13
#200 1.77 6.76
Data entered by: ~ MLM
Data checked by:~~­
FileName: MHHYS1AS
112.71
111.29
1.42
3.23
108.06
1.3
69.24
68.34
lndiv. Cum.
Wt. Wt.
Retain. Retain.
0.00 0.00
0.00 0.00
0.00 0.00
6.84 6.84
3.97 10.81
7.86 18.67
2.62 2.62
11.69 14.31
24.23 38.54
9.36 47.90
4.99 52.89
Date: ,,/.,/,;1104/2010 Date:~
Wt. Total Sample
Wet (g) 2215.88
Weight of + #10
Before Washing (g) 20.38
Weight of + #10
After Washing (g) 18.67
Weight of -#10
Wet(g) 2195.50
Weight of -#10
Dry (g) 2168.71
Wt. Total Sample
Dry (g) 2187.38
Cale. Wt. "W' (g) 68.93
Cale. Mass + #10 0.59
Cum. %
% Finer
Retain. By Wt.
0.0 100.0
0.0 100.0
0.0 100.0
0.3 99.7
0.5 99.5
0.9 99.1
4.7 95.3
21.6 78.4
56.8 43.2
70.3 29.7
77.6 22.4
HYDROMETER ANALYSIS -SEDIMENTATION DATA
ASTM D 422
CLIENT MWH
BORING NO.
DEPTH
SAMPLE NO.
SOIL DESCR.
LOCATION
Hydrometer #
Sp. Gr. of Soil
Value of "alpha"
Deflocculant
Defloc. Corr'n
Meniscus Corr'n
T
Stockpile 1
5.0'
A South
1009740
Denison White Mesa Mill Project
ASTM 152 H
2.65
1.00
Sodium Hexametaphosphate
5.5
0.5
Elapsed Hydrometer Reading %
Time Original Corrected Total
(min) "R" 100Ra/W Sample
0.0
0.5 20.00 15.00 21.8 21.8
1.0 18.00 13.00 18.9 18.9
2.0 17.50 12.50 18.1 18.1
5.0 16.50 11.50 16.7 16.7
15.0 15.50 10.50 15.2 15.2
30.0 14.50 9.50 13.8 13.8
60.0 13.50 8.50 12.3 12.3
120.0 13.00 8.00 11.6 11.6
250.0 12.00 7.00 10.2 10.2
1440.0 10.50 5.50 8.0 8.0
Grain Diameter= K*(SQRT(L/T))
Data entered by: MLM Date: 11/04/2010
Data checked by: __ _ Date: __ _
FileName: MHHYS1AS
JOB NO. 2512-53
SAMPLED
DATE TESTED
WASH SIEVE
DRY SIEVE
Temp., Deg. C
Temp. Coef. K
Wt. Dry Sample "W'
% of Total Sample
Effective Grain
Depth Diameter
L (mm)
13.01 0.0671
13.34 0.0480
13.42 0.0341
13.58 0.0217
13.75 0.0126
13.91 0.0090
14.08 0.0064
14.16 0.0045
14.32 0.0031
14.57 0.0013
10/12/10 --
10/26/10 DPM
Yes
No
23.1
0.01315
68.930
100.0
US Standard Sieve Size
3" 1.5' 314" 318" #4 #10 #20 #40 #50 #100 #200
100
80
20
COBBLES
COBBLES
TO BOULDERS
Client: MWH
Job Number. 2512-53
Classification:
Grain Size
GRAVEL SAND SILT OR CLAY (mm)
COARSE I FINE CRS I MEDIUM I FINE
PEBBLE GRAVEL SAND SILT
COARSE I MED I FINE IGRAN COARSE I MED I FINE
Boring No.: Stockpile 1 Sample No.: A South
Depth: 5.0'
Classification Not Performed
----• Test Data (mm)
0.0013
uses
CLAY
WEN1WORTH
CLIENT MWH
BORING NO.
DEPTH
SAMPLE NO.
SOIL DESCR.
LOCATION
MECHANICAL ANALYSIS-SIEVE TEST DATA
ASTM D 422
Stockpile 1
12.0'
B South
1009740
Denison White Mesa Mill Project
JOB NO. 2512-53
SAMPLED
DATE TESTED
WASH SIEVE
DRY SIEVE
10/12/10 --
10/26/10 DPM
Yes
No
MOISTURE DATA WASH SIEVE ANALYSIS
HYGROSCOPIC Yes
NATURAL No
Wt. Wet Soil & Pan (g)
Wt. Dry Soil & Pan (g)
Wt. Lost Moisture (g)
Wt. of Pan Only (g)
Wt. of Dry Soil (g)
Moisture Content %
Wt. Hydrom. Sample Wet (g)
Wt. Hydrom. Sample Dry (g)
Sieve Pan Ind iv.
Number Weight Wt.+ Pan
(Size) (g) (g)
3" 0.00 0.00
1 1/2" 0.00 177.82
3/4" 0.00 165.87
3/8" 0.00 2.41
#4 0.00 1.85
#10 0.00 7.18
#20 1.78 2.64
#40 1.83 6.50
#60 1.78 15.80
#100 1.78 9.73
#200 1.74 9.87
Data entered by: MLM
Data checked by: ~
FileName: MHHYS112
104.78
102.31
2.47
3.07
99.24
2.5
63.26
61.72
lndiv. Cum.
Wt. Wt.
Retain. Retain.
0.00 0.00
177.82 177.82
165.87 343.69
2.41 346.10
1.85 347.95
7.18 355.13
0.86 0.86
4.67 5.53
14.02 19.55
7.95 27.50
8.13 35.63
Date: nf,,/.~1/04/2010 Date:~
Wt. Total Sample
Wet (g) 2715.20
Weight of + #10
Before Washing (g) 373.00
Weight of + #1 O
After Washing (g) 355.13
Weight of -#1 O
Wet (g) 2342.20
Weight of -#1 O
Dry (g) 2302.76
Wt. Total Sample
Dry (g) 2657.89
Cale. Wt. "W' (g) 71.24
Cale. Mass + #10 9.52
Cum. %
% Finer
Retain. By Wt.
0.0 100.0
6.7 93.3
12.9 87.1
13.0 87.0
13.1 86.9
13.4 86.6
14.6 85.4
21.1 78.9
40.8 59.2
52.0 48.0
63.4 36.6
HYDROMETER ANALYSIS-SEDIMENTATION DATA
ASTM D422
CLIENT MWH
BORING NO.
DEPTH
SAMPLE NO.
SOIL DESCR.
LOCATION
Hydrometer#
Sp. Gr. of Soil
Value of "alpha"
Deflocculant
Defloc. Corr'n
Meniscus Corr'n
T
Stockpile 1
12.0'
B South
1009740
Denison White Mesa Mill Project
ASTM 152 H
2.65
1.00
Sodium Hexametaphosphate
5.5
0.5
Elapsed Hydrometer Reading %
Time Original Corrected Total
(min) "R"
0.0
0.5
1.0 27.50 22.50
2.0 25.50 20.50
5.0 23.00 18.00
15.0 21.50 16.50
30.0 20.00 15.00
60.0 19.00 14.00
120.0 18.00 13.00
250.0 16.50 11.50
1440.0 14.00 9.00
Grain Diameter= K*(SQRT(L/T))
Data entered by: MLM
Data checked by: __
FileName: MHHYS112
100Ra/W Sample
31.6 31.6
28.8 28.8
25.3 25.3
23.2 23.2
21.1 21.1
19.7 19.7
18.2 18.2
16.1 16.1
12.6 12.6
Date: 11/04/2010
Date: __ _
JOB NO. 2512-53
SAMPLED
DATE TESTED
WASH SIEVE
DRY SIEVE
Temp., Deg. C
Temp. Coef. K
Wt. Dry Sample "W'
% of Total Sample
Effective Grain
Depth Diameter
L (mm)
11.78 0.0451
12.11 0.0324
12.52 0.0208
12.76 0.0121
13.01 0.0087
13.17 0.0062
13.34 0.0044
13.58 0.0031
13.99 0.0013
10/12/10 --
10/26/10 DPM
Yes
No
23.1
0.01315
71.241
100.0
US Standard Sieve Size
3" 1.5" 3/4" 3/8" #4 #10 #20 #40 #SO #100 #200
100
80
20
COBBLES
COBBLES
TO BOULDERS
Client: MWH
Job Number: 2512-53
Classification:
Grain Size
GRAVEL SAND
COARSE I FINE CRS I MEDIUM
I
FINE
PEBBLE GRAVEL SAND
COARSE I MED I FINE IGRAN COARSE I MED I FINE
Boring No.: Stockpile 1
Depth: 12.0'
Classification Not Performed
0.0451
0.0324
0.0208
0.0121
0·0%8bos2-·· . 0.0044
0.0031
SILT OR CLAY (mm)
SILT
Sample No.: B South
0.0013
uses
CLAY
WENTWORTH
CLIENT MWH
BORING NO.
DEPTH
SAMPLE NO.
SOIL DESCR.
LOCATION
MECHANICAL ANALYSIS -SIEVE TEST DATA
ASTM D 422
Stockpile 2
5.0'
A
1009740
Denison White Mesa Mill Project
JOB NO. 2512-53
SAMPLED
DATE TESTED
WASH SIEVE
DRY SIEVE
10/12/10 --
10/26/10 DPM
Yes
No
MOISTURE DATA WASH SIEVE ANALYSIS
HYGROSCOPIC Yes
NATURAL No
Wt. Wet Soil & Pan (g)
Wt. Dry Soil & Pan (g)
Wt. Lost Moisture (g)
Wt. of Pan Only (g)
Wt. of Dry Soil (g)
Moisture Content %
Wt. Hydrom. Sample Wet (g)
Wt. Hydrom. Sample Dry (g)
Sieve Pan Ind iv.
Number Weight Wt.+ Pan
(Size) (g) (g)
3" 0.00 0.00
1 1/2" 0.00 0.00
3/4" 0.00 0.00
3/8" 0.00 0.00
#4 0.00 0.99
#10 0.00 1.53
#20 1.79 2.37
#40 1.74 2.41
#60 1.77 3.27
#100 1.76 4.29
#200 1.78 20.51
Data entered by: iDJ ~LM
Data checked by:_n--~
FileName: MHHYS25A
101.41
97.96
3.45
3.14
94.82
3.6
60.53
58.40
lndiv. Cum.
Wt. Wt.
Retain. Retain.
0.00 0.00
0.00 0.00
0.00 0.00
0.00 0.00
0.99 0.99
1.53 2.52
0.58 0.58
0.67 1.25
1.50 2.75
2.53 5.28
18.73 24.01
Date: ,,/uL.11/04/2010 Date:~
Wt. Total Sample
Wet (g) 1717.36
Weight of+ #1 O
Before Washing (g) 2.66
Weight of + #1 O
After Washing (g) 2.52
Weight of -#1 0
Wet (g) 1714.70
Weight of -#1 0
Dry (g) 1654.64
Wt. Total Sample
Dry (g) 1657.16
Cale. Wt. "W' (g) 58.49
Cale. Mass + #10 0.09
Cum. %
% Finer
Retain. By Wt.
0.0 100.0
0.0 100.0
0.0 100.0
0.0 100.0
0.1 99.9
0.2 99.8
1.1 98.9
2.3 97.7
4.9 95.1
9.2 90.8
41.2 58.8
HYDROMETER ANALYSIS -SEDIMENTATION DATA
ASTM D 422
CLIENT MWH
BORING NO.
DEPTH
SAMPLE NO.
SOIL DESCR.
LOCATION
Hydrometer #
Sp. Gr. of Soil
Value of "alpha"
Deflocculant
Defloc. Corr'n
Meniscus Corr'n
T
Stockpile 2
5.0'
A
1009740
Denison White Mesa Mill Project
ASTM 152 H
2.65
1.00
Sodium Hexametaphosphate
5.5
0.5
Elapsed Hydrometer Reading %
Time Original Corrected Total
(min) "R11
0.0
0.5
1.0 29.00 24.00
2.0 26.00 21.00
5.0 23.00 18.00
15.0 21.00 16.00
30.0 20.50 15.50
60.0 19.00 14.00
120.0 19.00 14.00
250.0 18.00 13.00
1451.0 15.50 10.50
Grain Diameter= K*(SQRT(L/T))
Data entered by: ~ MLM
Data checked by:_~~­
FileName: MHHYS25A
100Ra/W Sample
41.0 41.0
35.9 35.9
30.8 30.8
27.4 27.4
26.5 26.5
23.9 23.9
23.9 23.9
22.2 22.2
18.0 18.0
Date: ,,l.i/.11/04/2010 Date:~
JOB NO. 2512-53
SAMPLED
DATE TESTED
WASH SIEVE
DRY SIEVE
Temp., Deg. C
Temp. Coef. K
Wt. Dry Sample "W'
% of Total Sample
Effective Grain
Depth Diameter
L (mm)
11.53 0.0446
12.03 0.0322
12.52 0.0208
12.85 0.0121
12.93 0.0086
13.17 0.0061
13.17 0.0043
13.34 0.0030
13.75 0.0013
10/12/10 --
10/26/10 DPM
Yes
No
23.3
0.01312
58.489
100.0
E "' 60
~
~
~ " c: u:: c " e " 40 0..
COBBLES
COBBLES
TO BOULDERS
Client: MWH
Job Number: 2512-53
Classification:
US Standard Sieve Size
1.5" 3/4" 318" #4 #10 #20 #40 #60 #100 #200
• Test Data (mm)
Grain Size
GRAVEL SAND SILT OR CLAY (mm)
COARSE I FINE CRS I MEDIUM
I
FINE uses
PEBBLE GRAVEL SAND SILT CLAY
COARSE I MED I FINE IGRAN COARSE I MED I FINE
WENTWORTH
Boring No.: Stockpile 2 Sample No.: A
Depth: 5.0'
Classification Not Performed
CLIENT MWH
BORING NO.
DEPTH
SAMPLE NO.
SOIL DESCR.
LOCATION
MECHANICAL ANALYSIS -SIEVE TEST DATA
ASTM D 422
Stockpile 3
6.0'
A
1009740
Denison White Mesa Mill Project
JOB NO. 2512-53
SAMPLED
DATE TESTED
WASH SIEVE
DRY SIEVE
10/12/10 --
10/26/10 DPM
Yes
No
MOISTURE DATA WASH SIEVE ANALYSIS
HYGROSCOPIC Yes
NATURAL No
Wt. Wet Soil & Pan (g)
Wt. Dry Soil & Pan (g)
Wt. Lost Moisture (g)
Wt. of Pan Only (g)
Wt. of Dry Soil (g)
Moisture Content %
Wt. Hydrom. Sample Wet (g)
Wt. Hydrom. Sample Dry (g)
Sieve Pan lndiv.
Number Weight Wt.+ Pan
(Size) (g) (g)
3" 0.00
1 1/2" 0.00
3/4" 0.00
3/8" 0.00
#4 0.00
#10 0.00
#20 1.77
#40 1.77
#60 1.81
#100 1.73
#200 1.78
Data entered by: J., MLM
Data checked by:~
FileName: MHHYS36A
0.00
0.00
0.00
0.00
0.73
1.30
2.20
2.58
4.70
9.08
11.67
83.64
80.02
3.62
2.99
77.03
4.7
63.20
60.36
Ind iv. Cum.
Wt. Wt.
Retain. Retain.
0.00 0.00
0.00 0.00
0.00 0.00
0.00 0.00
0.73 0.73
1.30 2.03
0.43 0.43
0.81 1.24
2.89 4.13
7.35 11.48
9.89 21.37
Date: 11j,J!,,~ 1/04/201 O
Date:-4r
Wt. Total Sample
Wet (g) 2309.30
Weight of + #10
Before Washing (g) 2.80
Weight of+ #10
After Washing (g) 2.03
Weight of -#10
Wet (g) 2306.50
Weight of -#10
Dry (g) 2203.71
Wt. Total Sample
Dry (g) 2205.74
Cale. Wt. "W' (g) 60.42
Cale. Mass + #10 0.06
Cum. %
% Finer
Retain. By Wt.
0.0 100.0
0.0 100.0
0.0 100.0
0.0 100.0
0.0 100.0
0.1 99.9
0.8 99.2
2.1 97.9
6.9 93.1
19.1 80.9
35.5 64.5
HYDROMETER ANALYSIS -SEDIMENTATION DATA
ASTM D422
CLIENT MWH
BORING NO. Stockpile 3
DEPTH 6.0'
SAMPLE NO. A
SOIL DESCR. 1009740
LOCATION Denison White Mesa Mill Project
Hydrometer # ASTM 152 H
Sp. Gr. of Soil 2.65
Value of "alpha" 1.00
Deflocculant Sodium Hexametaphosphate
Defloc. Corr'n 5.5
Meniscus Corr'n 0.5
T
Elapsed Hydrometer Reading
Time Original Corrected
(min) "R"
0.0
0.5 41.00 36.00
1.0 38.00 33.00
2.0 36.00 31.00
5.0 33.50 28.50
15.0 31.00 26.00
30.0 30.00 25.00
60.0 28.00 23.00
120.0 26.00 21.00
250.0 23.50 18.50
1440.0 19.00 14.00
Grain Diameter= K*(SQRT(L/T))
Data entered by: iln MLM
Data checked by:~~~
FileName: MHHYS36A
%
Total
100Ra/W Sample
59.6 59.6
54.6 54.6
51.3 51.3
47.2 47.2
43.0 43.0
41.4 41.4
38.1 38.1
34.8 34.8
30.6 30.6
23.2 23.2
Date: 11/,i/..,, 11/04/201 O Date:~
JOB NO. 2512-53
SAMPLED
DATE TESTED
WASH SIEVE
DRY SIEVE
Temp., Deg. C
Temp. Coef. K
Wt. Dry Sample "W'
% of Total Sample
Effective Grain
Depth Diameter
L (mm)
9.57 0.0576
10.06 0.0418
10.39 0.0300
10.80 0.0194
11.21 0.0114
11.37 0.0081
11.70 0.0058
12.03 0.0042
12.44 0.0029
13.17 0.0013
10/12/10 --
10/26/10 DPM
Yes
No
23.0
0.01317
60.420
100.0
US Standard Sieve Size
3" 1.5" 3/4" 3/8" #4 #10 #20 #40 #60 #100 #200
100
80
20
COBBLES
COBBLES
TO BOULDERS
Client: MWH
Job Number: 2512-53
Classification:
Grain Size
GRAVEL SAND
COARSE I FINE CRS I MEDIUM I FINE
PEBBLE GRAVEL SAND
COARSE I MED I FINE IGRAN COARSE I MED I FINE
Boring No.: Stockpile 3
Depth: 6.0'
Classification Not Performed
0.0194
0.0114 0.0081
0.0058
0.0042
~0.0029~
SILT OR CLAY (mm)
SILT
Sample No.: A
• Test Data (mm)
0.0013
uses
CLAY
WENTWORTH
CLIENT MWH
BORING NO.
DEPTH
SAMPLE NO.
SOIL DESCR.
LOCATION
MECHANICAL ANALYSIS -SIEVE TEST DATA
ASTM D 422
Stockpile 4
5.0'
A
1009740
Denison White Mesa Mill Project
JOB NO. 2512-53
SAMPLED
DATE TESTED
WASH SIEVE
DRY SIEVE
10/12/10
10/26/10 DPM
Yes
No
MOISTURE DATA WASH SIEVE ANALYSIS
HYGROSCOPIC Yes
NATURAL No
Wt. Wet Soil & Pan (g)
Wt. Dry Soil & Pan (g)
Wt. Lost Moisture (g)
Wt. of Pan Only (g)
Wt. of Dry Soil (g)
Moisture Content %
Wt. Hydrom. Sample Wet (g)
Wt. Hydrom. Sample Dry (g)
Sieve Pan lndiv.
Number Weight Wt.+ Pan
(Size) (g) (g)
3" 0.00 0.00
1 1/2" 0.00 0.00
314" 0.00 0.00
3/8" 0.00 0.00
#4 0.00 0.95
#10 0.00 0.81
#20 3.06 3.44
#40 3.02 4.36
#60 3.11 5.57
#100 3.05 5.21
#200 2.97 6.74
Data entered by: .Jn MLM
Data checked by:_,_,M~(.....
FileName: MHHY450A
103.65
97.39
6.26
3.14
94.25
6.6
60.83
57.04
lndiv. Cum.
Wt. Wt.
Retain. Retain.
0.00 0.00
0.00 0.00
0.00 0.00
0.00 0.00
0.95 0.95
0.81 1.76
0.38 0.38
1.34 1.72
2.46 4.18
2.16 6.34
3.77 10.11
Date:
11
I. I.,,, 10/29/2010
Date:~
Wt. Total Sample
Wet (g) 1447.32
Weight of+ #1 O
Before Washing (g) 2.12
Weight of+ #10
After Washing (g) 1.76
Weight of -#1 O
Wet (g) 1445.20
Weight of -#10
Dry (g) 1355.53
Wt. Total Sample
Dry (g) 1357.29
Cale. Wt. "W' (g) 57.12
Cale. Mass + #1 O 0.07
Cum. %
% Finer
Retain. By Wt.
0.0 100.0
0.0 100.0
0.0 100.0
0.0 100.0
0.1 99.9
0.1 99.9
0.8 99.2
3.1 96.9
7.4 92.6
11.2 88.8
17.8 82.2
HYDROMETER ANALYSIS -SEDIMENTATION DATA
ASTM D422
CLIENT MWH
BORING NO. Stockpile 4
DEPTH 5.0'
SAMPLE NO. A
SOIL DESCR. 1009740
LOCATION Denison White Mesa Mill Project
Hydrometer# ASTM 152 H
Sp. Gr. of Soil 2.65
Value of "alpha" 1.00
Deflocculant Sodium Hexametaphosphate
Defloc. Corr'n 5.5
Meniscus Corr'n 0.5
T
Elapsed Hydrometer Reading %
Time Original Corrected
(min) "R"
0.0
0.5 50.00 45.00
1.0 46.00 41.00
2.0 44.00 39.00
5.0 41.00 36.00
15.0 38.00 33.00
30.0 36.00 31.00
60.0 34.50 29.50
120.0 31.00 26.00
250.0 29.00 24.00
1440.0 19.00 14.00
Grain Diameter= K*(SQRT(L/T))
Data entered by: MLM
Data checked by: l/i.<
FileName: MHHY450A
Total
100Ra/W Sample
78.8 78.8
71.8 71.8
68.3 68.3
63.0 63.0
57.8 57.8
54.3 54.3
51.6 51.6
45.5 45.5
42.0 42.0
24.5 24.5
Date: 11 I. I ..... 10/29/201 O Date:~
JOB NO. 2512-53
SAMPLED
DATE TESTED
WASH SIEVE
DRY SIEVE
Temp., Deg. C
Temp. Coef. K
Wt. Dry Sample "W'
% of Total Sample
Effective Grain
Depth Diameter
L (mm)
8.09 0.0530
8.75 0.0389
9.07 0.0281
9.57 0.0182
10.06 0.0108
10.39 0.0077
10.63 0.0055
11.21 0.0040
11.53 0.0028
13.17 0.0013
10/12/10
10/26/10 DPM
Yes
No
23.0
0.01317
57.118
100.0
US Standard Sieve Size
3' 1.5' 3/4" 3/8' #4 #20 #40 1#30 #100 #200
100
80
:E 60 "' ~ >. .c :;; c:: u: c " f:: " 40 0..
20
COBBLES
COBBLES
TO BOULDERS
Client MWH
Job Number. 2512-53
Classification:
GRAVEL SAND
COARSE I FINE CRS I MEDIUM I FINE
PEBBLE GRAVEL SAND
COARSE I MED I FINE IGRAN COARSE I MED
Boring No.: Stockpile 4
Depth: 5.0'
Classification Not Performed
Grain Size
I FINE
0.0530
0.0389
0.0281
0.0182
SILT
0.0108
0.0077
0.0055
0.0040
0.0028
SILT OR CLAY (mm)
Sample No.: A
• Test Data (mm)
0.0013
uses
CLAY
WENTWORTH
CLIENT MWH
BORING NO.
DEPTH
SAMPLE NO.
SOIL DESCR.
LOCATION
MECHANICAL ANALYSIS -SIEVE TEST DATA
ASTM D 422
Stockpile 5
6.0'
A
1009740
Denison White Mesa Mill Project
JOB NO. 2512-53
SAMPLED
DATE TESTED
WASH SIEVE
DRY SIEVE
11/15/10 WAR
Yes
No
MOISTURE DATA WASH SIEVE ANALYSIS
HYGROSCOPIC Yes
NATURAL No
Wt. Wet Soil & Pan (g)
Wt. Dry Soil & Pan (g)
Wt. Lost Moisture (g)
Wt. of Pan Only (g)
Wt. of Dry Soil (g)
Moisture Content %
Wt. Hydrom. Sample Wet (g)
Wt. Hydrom. Sample Dry (g)
Sieve Pan Ind iv.
Number Weight Wt.+ Pan
(Size) (g) (g)
3" 0.00 0.00
1 1/2" 0.00 0.00
3/4" 0.00 0.00
3/8" 0.00 0.00
#4 0.00 0.00
#10 0.00 0.00
#20 3.03 3.06
#40 3.00 3.15
#60 3.08 3.71
#100 2.99 4.29
#200 3.13 20.58
Data entered by: MLM
Data checked by: /$/Lt-
FileName: MHHYS66A
Wt. Total Sample
Wet(g) 66.35
Weight of+ #10
Before Washing (g) 0.00
Weight of+ #10
262.62 After Washing (g) 0.00
256.89 Weight of -#10
5.73 Wet (g) 66.35
6.60 Weight of -#10
250.29 Dry (g) 64.87
2.3 Wt. Total Sample
Dry (g) 64.87
66.35 Cale. Wt. "W' (g) 64.87
64.87 Cale. Mass + #10 0.00
lndiv. Cum. Cum. %
Wt. Wt. % Finer
Retain. Retain. Retain. By Wt.
0.00 0.00 0.0 100.0
0.00 0.00 0.0 100.0
0.00 0.00 0.0 100.0
0.00 0.00 0.0 100.0
0.00 0.00 0.0 100.0
0.00 0.00 0.0 100.0
0.03 0.03 0.0 100.0
0.15 0.18 0.3 99.7
0.63 0.81 1.2 98.8
1.30 2.11 3.3 96.7
17.45 19.56 30.2 69.8
Date: 11/19/2010
Date: II} I <t{10
HYDROMETER ANALYSIS-SEDIMENTATION DATA
ASTM D422
CLIENT MWH
BORING NO.
DEPTH
SAMPLE NO.
SOIL DESCR.
LOCATION
Hydrometer#
Sp. Gr. of Soil
Value of "alpha"
Deflocculant
Defloc. Corr'n
Meniscus Corr'n
T
Stockpile 5
6.0'
A
1009740
Denison White Mesa Mill Project
ASTM 152 H
2.65
1.00
Sodium Hexametaphosphate
5.0
-1.5
Elapsed Hydrometer Reading %
Time Original Corrected
(min) "R"
0.0
0.5 37.00 30.50
1.0 31.00 24.50
2.0 24.50 18.00
5.0 22.00 15.50
15.0 20.00 13.50
30.0 18.50 12.00
60.0 18.00 11.50
120.0 18.00 11.50
250.0 16.00 9.50
1440.0 15.00 8.50
Grain Diameter = K*(SQRT(L/T))
Data entered by: MLM
Data checked by: /$ta__
FileName: MHHYS66A
Total
100Ra/W Sample
Date:
Date:
47.0 47.0
37.8 37.8
27.7 27.7
23.9 23.9
20.8 20.8
18.5 18.5
17.7 17.7
17.7 17.7
14.6 14.6
13.1 13.1
I 111191201 o
II, t 1(10
JOB NO. 2512-53
SAMPLED
DATE TESTED
WASH SIEVE
DRY SIEVE
Temp., Deg. C
Temp. Coef. K
Wt. Dry Sample "W'
% of Total Sample
Effective Grain
Depth Diameter
L (mm)
10.22 0.0601
11.21 0.0445
12.27 0.0329
12.68 0.0212
13.01 0.0124
13.26 0.0088
13.34 0.0063
13.34 0.0044
13.67 0.0031
13.83 0.0013
11/15/10 WAR
Yes
No
22.2
0.01329
64.865
100.0
US Standard Sieve Size
3" 1.5" 3/4" 3/8" #4 #10 #20 #40 #60 #100 #200
100
80
.E 60 f
£>
~ Q) c: u: c Q) e Q) 40 0..
20
0
COBBLES
COBBLES
TO BOULDERS
Client MWH
Job Number. 2512-53
Classification:
----------------
0.0445
0.0329
0.0212
0.0124
0.0013
Grain Size
GRAVEL SAND SILT OR CLAY (mm)
COARSE I FINE CRS I MEDIUM I FINE
PEBBLE GRAVEL SAND SILT CLAY
COARSE I MED I FINE IGRAN COARSE I MED I FINE
Boring No.: Stockpile 5 Sample No.: A
Depth: 6.0'
Classification Not Performed
• Test Data (mm)
uses
WENTWORTH
CLIENT MWH
BORING NO.
DEPTH
SAMPLE NO.
SOIL DESCR.
LOCATION
MECHANICAL ANALYSIS -SIEVE TEST DATA
ASTM D422
Stockpile 6
2.0'
A
1009740
Denison White Mesa Mill Project
JOB NO. 2512-53
SAMPLED
DATE TESTED
WASH SIEVE
DRY SIEVE
11/15/10 WAR
Yes
No
MOISTURE DATA WASH SIEVE ANALYSIS
HYGROSCOPIC Yes
NATURAL No
Wt. Wet Soil & Pan (g)
Wt. Dry Soil & Pan (g)
Wt. Lost Moisture (g)
Wt. of Pan Only (g)
Wt. of Dry Soil (g)
Moisture Content %
Wt. Hydrom. Sample Wet (g)
Wt. Hydrom. Sample Dry (g)
Sieve Pan lndiv.
Number Weight Wt.+ Pan
(Size) (g) (g)
3" 0.00 0.00
1 1/2" 0.00 0.00
3/4" 0.00 0.00
3/8" 0.00 0.00
#4 0.00 0.00
#10 0.00 0.00
#20 3.29 3.94
#40 3.04 4.05
#60 3.03 6.51
#100 3.26 14.22
#200 3.21 17.03
Data entered by: MLM
Data checked by: (lilLL.
FileName: MHHYS62A
Wt. Total Sample
Wet (g) 65.22
Weight of+ #10
Before Washing (g) 0.00
Weight of+ #1 O
383.02 After Washing (g) 0.00
374.28 Weight of -#10
8.74 Wet (g) 65.22
6.73 Weight of -#10
367.55 Dry (g) 63.71
2.4 Wt. Total Sample
Dry (g) 63.71
65.22 Cale. Wt. "W' (g) 63.71
63.71 Cale. Mass + #10 0.00
lndiv. Cum. Cum. %
Wt. Wt. % Finer
Retain. Retain. Retain. By Wt.
0.00 0.00 0.0 100.0
0.00 0.00 0.0 100.0
0.00 0.00 0.0 100.0
0.00 0.00 0.0 100.0
0.00 0.00 0.0 100.0
0.00 0.00 0.0 100.0
0.65 0.65 1.0 99.0
1.01 1.66 2.6 97.4
3.48 5.14 8.1 91.9
10.96 16.10 25.3 74.7
13.82 29.92 47.0 53.0
Date: 11/18/2010
Date: U/19.}/0 I I
HYDROMETER ANALYSIS -SEDIMENTATION DATA
ASTM D422
CLIENT MWH
BORING NO.
DEPTH
SAMPLE NO.
SOIL DESCR.
LOCATION
Hydrometer #
Sp. Gr. of Soil
Value of "alpha"
Deflocculant
Defloc. Corr'n
Meniscus Corr'n
T
Stockpile 6
2.0'
A
1009740
Denison White Mesa Mill Project
ASTM 152 H
2.65
1.00
Sodium Hexametaphosphate
5.0
-1.5
Elapsed Hydrometer Reading %
Time Original Corrected
(min) "R"
0.0
0.5 37.00 30.50
1.0 31.50 25.00
2.0 29.00 22.50
5.0 27.00 20.50
15.0 24.50 18.00
30.0 23.00 16.50
60.0 21.50 15.00
120.0 20.00 13.50
250.0 18.00 11.50
1440.0 16.00 9.50
Grain Diameter= K*(SQRT(L/T))
Data entered by: MLM
Data checked by: 1!;kl.
FileName: MHHYS62A
Total
100Ra/W Sample
47.9 47.9
39.2 39.2
35.3 35.3
32.2 32.2
28.3 28.3
25.9 25.9
23.5 23.5
21.2 21.2
18.1 18.1
14.9 14.9
Date: / 11/18/2010
Date: //1 I'd/Jo
JOB NO. 2512-53
SAMPLED
DATE TESTED
WASH SIEVE
DRY SIEVE
Temp., Deg. C
Temp. Coef. K
Wt. Dry Sample "W'
% ofTotal Sample
Effective Grain
Depth Diameter
L (mm)
10.22 0.0599
11.12 0.0442
11.53 0.0318
11.86 0.0204
12.27 0.0120
12.52 0.0086
12.76 0.0061
13.01 0.0044
13.34 0.0031
13.67 0.0013
11/15/10 WAR
Yes
No
22.5
0.01325
63.705
100.0
US Standard Sieve Size
3' 1.5" 314' 318" #4 #10 #20 #40 #i30 #100 #200
100
80
:E 60 C> ~ ~
! ·~~~ u:: c ~ &'. 40
20
COBBLES
COBBLES
TO BOULDERS
Client: MWH
Job Number: 2512-53
Classification:
GRAVEL SAND
COARSE I FINE CRS I MEDIUM I FINE
PEBBLE GRAVEL SAND
COARSE I MED I FINE \GRAN COARSE I MED
Boring No.: Stockpile 6
Depth: 2.0'
Classification Not Performed
Grain Size
I FINE
0.0318
0.0204
0.0120
0.0086
0.0061
0.0044_
0.0031
SILT OR CLAY (mm)
SILT
Sample No.: A
0.0013
uses
CLAY
WENTWORTH
CLIENT MWH
BORING NO.
DEPTH
SAMPLE NO.
SOIL DESCR.
LOCATION
MECHANICAL ANALYSIS -SIEVE TEST DATA
ASTM D422
Stockpile 7
0.0'
A
1009740
Denison White Mesa Mill Project
JOB NO. 2512-53
SAMPLED
DATE TESTED
WASH SIEVE
DRY SIEVE
11/15/10 WAR
Yes
No
MOISTURE DATA WASH SIEVE ANALYSIS
HYGROSCOPIC Yes
NATURAL No
Wt. Wet Soil & Pan (g)
Wt. Dry Soil & Pan (g)
Wt. Lost Moisture (g)
Wt. of Pan Only (g)
Wt. of Dry Soil (g)
Moisture Content %
Wt. Hydrom. Sample Wet (g)
Wt. Hydrom. Sample Dry (g)
Sieve Pan Ind iv.
Number Weight Wt.+ Pan
(Size) (g) (g)
3" 0.00 0.00
1 1/2" 0.00 0.00
3/4" 0.00 0.00
3/8" 0.00 0.00
#4 0.00 0.00
#10 0.00 0.00
#20 3.08 3.53
#40 3.25 3.89
#60 3.08 4.48
#100 3.14 5.55
#200 3.10 21.95
Data entered by: MLM
Data checked by: 81:::t-
FileName: MHHYS70A
Wt. Total Sample
Wet(g) 64.62
Weight of+ #10
Before Washing (g) 0.00
Weight of+ #10
262.38 After Washing (g) 0.00
257.88 Weight of -#10
4.50 Wet (g) 64.62
8.59 Weight of -#10
249.29 Dry (g) 63.47
1.8 Wt. Total Sample
Dry (g) 63.47
64.62 Cale. Wt. "W' (g) 63.47
63.47 Cale. Mass + #10 0.00
Ind iv. Cum. Cum. %
Wt. Wt. % Finer
Retain. Retain. Retain. By Wt.
0.00 0.00 0.0 100.0
0.00 0.00 0.0 100.0
0.00 0.00 0.0 100.0
0.00 0.00 0.0 100.0
0.00 0.00 0.0 100.0
0.00 0.00 0.0 100.0
0.45 0.45 0.7 99.3
0.64 1.09 1.7 98.3
1.40 2.49 3.9 96.1
2.41 4.90 7.7 92.3
18.85 23.75 37.4 62.6
Date: 11/19/2010
Date: /I / 19)10 r .
HYDROMETER ANALYSIS -SEDIMENTATION DATA
ASTM D 422
CLIENT MWH
BORING NO.
DEPTH
SAMPLE NO.
SOIL DESCR.
LOCATION
Hydrometer#
Sp. Gr. of Soil
Value of "alpha"
Deflocculant
Defloc. Corr'n
Meniscus Corr'n
T
Stockpile 7
0.0'
A
1009740
Denison White Mesa Mill Project
ASTM 152 H
2.65
1.00
Sodium Hexametaphosphate
5.0
-1.5
Elapsed Hydrometer Reading %
Time Original Corrected
(min) "R"
0.0
0.5 37.00 30.50
1.0 30.50 24.00
2.0 25.50 19.00
5.0 23.00 16.50
15.0 22.00 15.50
30.0 20.00 13.50
60.0 19.50 13.00
120.0 19.00 12.50
250.0 18.50 12.00
1440.0 17.00 10.50
Grain Diameter= K*(SQRT(L/T))
Data entered by: MLM
Data checked by: m,
FileName: MHHYS70A
Total
100Ra/W Sample
48.1 48.1
37.8 37.8
29.9 29.9
26.0 26.0
24.4 24.4
21.3 21.3
20.5 20.5
19.7 19.7
18.9 18.9
16.5 16.5
Date:~ (1/18/2010
Date: I t \j tO I
JOB NO. 2512-53
SAMPLED
DATE TESTED
WASH SIEVE
DRY SIEVE
Temp., Deg. C
Temp. Coef. K
Wt. Dry Sample "W'
% of Total Sample
Effective Grain
Depth Diameter
L (mm)
10.22 0.0600
11.29 0.0446
12.11 0.0326
12.52 0.0210
12.68 0.0122
13.01 0.0087
13.09 0.0062
13.17 0.0044
13.26 0.0031
13.50 0.0013
11/15/10 WAR
Yes
No
22.4
0.01326
63.474
100.0
US Standard Sieve Size
3' 1.5' 3/4' 318' #4 #10 #20 #40 lreO #100 #200
100
80
:E 60 C> ~
ii'
.~ • Test Data (mm)
LL. c ~ "-40
20
COBBLES
COBBLES
TO BOULDERS
Client: MWH
Job Number. 2512-53
Classification:
GRAVEL SAND
COARSE I FINE CRS I MEDIUM I FINE
PEBBLE GRAVEL SAND
COARSE I MED I FINE IGRAN COARSE I MED
Boring No.: Stockpile 7
Depth: 0.0'
Classification Not Performed
Grain Size
I FINE
0.0210 0.0122
Sil TOR CLAY (mm)
SILT
Sample No.: A
0.0013
uses
CLAY
WENTWORTH
CLIENT MWH
BORING NO.
DEPTH
SAMPLE NO.
SOIL DESCR.
LOCATION
MECHANICAL ANALYSIS -SIEVE TEST DATA
ASTM D422
Stockpile 8
5.0'
A
1009740
Denison White Mesa Mill Project
JOB NO. 2512-53
SAMPLED
DATE TESTED
WASH SIEVE
DRY SIEVE
10/12/10 --
10/26/10 DPM
Yes
No
MOISTURE DATA . WASH SIEVE ANALYSIS
HYGROSCOPIC Yes
NATURAL No
Wt. Wet Soil & Pan (g)
Wt. Dry Soil & Pan (g)
Wt. Lost Moisture (g)
Wt. of Pan Only (g)
Wt. of Dry Soil (g)
Moisture Content %
Wt. Hydrom. Sample Wet (g)
Wt. Hydrom. Sample Dry (g)
Sieve Pan lndiv.
Number Weight Wt.+ Pan
(Size) (g) (g)
3" 0.00 0.00
1 1/2" 0.00 0.00
3/4" 0.00 0.00
3/8" 0.00 0.00
#4 0.00 0.69
#10 0.00 13.44
#20 1.77 2.13
#40 1.81 2.30
#60 1.83 4.28
#100 1.77 12.00
#200 1.79 17.51
Data entered by: MLM
Data checked by: ~
FileName: MHHYS85A
110.10
108.82
1.28
2.99
105.83
1.2
68.19
67.37
lndiv. Cum.
Wt. Wt.
Retain. Retain.
0.00 0.00
0.00 0.00
0.00 0.00
0.00 0.00
0.69 0.69
13.44 14.13
0.36 0.36
0.49 0.85
2.45 3.30
10.23 13.53
15.72 29.25
Date: 11 f u //()11/04/201 o Date:~
Wt. Total Sample
Wet (g) 2051.90
Weight of+ #10
Before Washing (g) 40.60
Weight of+ #1 O
After Washing (g) 14.13
Weight of -#10
Wet (g) 2011.30
Weight of -#1 O
Dry (g) 2013.42
Wt. Total Sample
Dry (g) 2027.55
Cale. Wt. "W' (g) 67.85
Cale. Mass + #10 0.47
Cum. %
% Finer
Retain. By Wt.
0.0 100.0
0.0 100.0
0.0 100.0
0.0 100.0
0.0 100.0
0.7 99.3
1.2 98.8
1.9 98.1
5.6 94.4
20.6 79.4
43.8 56.2
HYDROMETER ANALYSIS -SEDIMENTATION DATA
ASTM D422
CLIENT MWH
BORING NO.
DEPTH
SAMPLE NO.
SOIL DESCR.
LOCATION
Hydrometer#
Sp. Gr. of Soil
Value of "alpha"
Deflocculant
Defloc. Corr'n
Meniscus Corr'n
T
Stockpile 8
5.0'
A
1009740
Denison White Mesa Mill Project
ASTM 152 H
2.65
1.00
Sodium Hexametaphosphate
5.5
0.5
Elapsed Hydrometer Reading %
Time Original Corrected Total
(min) "R"
0.0
0.5 36.00 31.00
1.0 31.00 26.00
2.0 29.00 24.00
5.0 25.50 20.50
15.0 23.00 18.00
30.0 21.00 16.00
60.0 20.00 15.00
120.0 18.00 13.00
250.0 16.00 11.00
1442.0 12.50 7.50
Grain Diameter= K*(SQRT(L/T))
Data entered by: MLM
Data checked by: {~
FileName: MHHYS85A
100Ra/W Sample
45.7 45.7
38.3 38.3
35.4 35.4
30.2 30.2
26.5 26.5
23.6 23.6
22.1 22.1
19.2 19.2
16.2 16.2
11.1 11.1
Date: 11 J,1 J,1,~!04/2010
Date:~
JOB NO. 2512-53
SAMPLED
DATE TESTED
WASH SIEVE
DRY SIEVE
Temp., Deg. C
Temp. Coef. K
Wt. Dry Sample "W'
% of Total Sample
Effective Grain
Depth Diameter
L (mm)
10.39 0.0598
11.21 0.0439
11.53 0.0315
12.11 0.0204
12.52 0.0120
12.85 0.0086
13.01 0.0061
13.34 0.0044
13.67 0.0031
14.24 0.0013
10/12/10 --
10/26/10 DPM
Yes
No
23.3
0.01312
67.847
100.0
100
80
:E 60 f
£>
~ " c: u:: c " 2 " 40 "-
20
COBBLES
COBBLES
TO BOULDERS
Client: MWH
Job Number: 2512-53
Classification:
US Standard Sieve Size
1.5" 3/4" 318" #4 #10 #20 #40 #60 #100 #200
• Test Data (mm)
0.0439
0.0315
0.0204
0.0031
0.0013
Grain Size
GRAVEL SAND SILT OR CLAY (mm)
COARSE I FINE CRS I MEDIUM I FINE uses
PEBBLE GRAVEL SAND SILT CLAY
COARSE I MED I FINE \GRAN COARSE I MED I FINE
WENTWORTH
Boring No.: Stockpile 8 Sample No.: A
Depth: 5.0'
Classification Not Performed
CLIENT MWH
BORING NO.
DEPTH
SAMPLE NO.
SOIL DESCR.
LOCATION
MECHANICAL ANALYSIS -SIEVE TEST DATA
ASTM D422
Stockpile 9,
0.0'
A
1009740
Denison White Mesa Mill Project
JOB NO. 2512-53
SAMPLED
DATE TESTED
WASH SIEVE
DRY SIEVE
11/15/10 WAR
Yes
No
MOISTURE DATA WASH SIEVE ANALYSIS
HYGROSCOPIC Yes
NATURAL No
Wt. Wet Soil & Pan (g)
Wt. Dry Soil & Pan (g)
Wt. Lost Moisture (g)
Wt. of Pan Only (g)
Wt. of Dry Soil (g)
Moisture Content %
Wt. Hydrom. Sample Wet (g)
Wt. Hydrom. Sample Dry (g)
Sieve Pan lndiv.
Number Weight Wt.+ Pan
(Size) (g) (g)
3" 0.00 0.00
1 1/2" 0.00 0.00
3/4" 0.00 0.00
3/8" 0.00 0.00
#4 0.00 0.00
#10 0.00 0.00
#20 2.99 3.03
#40 3.05 3.09
#60 3.27 3.55
#100 3.04 4.04
#200 3.11 25.90
Data entered by: MLM
Data checked by: 8kL
FileName: MHHYS90A
Wt. Total Sample
Wet (g) 71.63
Weight of+ #10
Before Washing (g) 0.00
Weight of+ #10
305.13 After Washing (g) 0.00
299.78 Weight of -#1 O
5.35 Wet (g) 71.63
6.79 Weight of -#10
292.99 Dry (g) 70.35
1.8 Wt. Total Sample
Dry (g) 70.35
71.63 Cale. Wt. "W' (g) 70.35
70.35 Cale. Mass + #10 0.00
lndiv. Cum. Cum. %
Wt. Wt. % Finer
Retain. Retain. Retain. By Wt.
0.00 0.00 0.0 100.0
0.00 0.00 0.0 100.0
0.00 0.00 0.0 100.0
0.00 0.00 0.0 100.0
0.00 0.00 0.0 100.0
0.00 0.00 0.0 100.0
0.04 0.04 0.1 99.9
0.04 0.08 0.1 99.9
0.28 0.36 0.5 99.5
1.00 1.36 1.9 98.1
22.79 24.15 34.3 65.7
Date: 11/18/2010
Date: 11/!cil10
HYDROMETER ANALYSIS -SEDIMENTATION DATA
ASTM D 422
CLIENT MWH
BORING NO.
DEPTH
SAMPLE NO.
SOIL DESCR.
LOCATION
Hydrometer#
Sp. Gr. of Soil
Value of "alpha"
Deflocculant
Defloc. Corr'n
Meniscus Corr'n
T
Stockpile 9
0.0'
A
1009740
Denison White Mesa Mill Project
ASTM 152 H
2.65
1.00
Sodium Hexametaphosphate
5.0
-1.5
Elapsed Hydrometer Reading %
Time Original Corrected
(min) "R"
0.0
0.5 42.00 35.50
1.0 34.50 28.00
2.0 26.00 19.50
5.0 23.00 16.50
15.0 20.00 13.50
30.0 20.00 13.50
60.0 19.00 12.50
120.0 19.00 12.50
250.0 17.50 11.00
1440.0 15.50 9.00
Grain Diameter= K*(SQRT(L/T))
Data entered by: MLM
Data checked by: fkkl-
FileName: MHHYS90A
Total
100Ra/W Sample
50.5 50.5
39.8 39.8
27.7 27.7
23.5 23.5
19.2 19.2
19.2 19.2
17.8 17.8
17.8 17.8
15.6 15.6
12.8 12.8
Date: 11/19/2010
Date: U /1 ti /to
JOB NO. 2512-53
SAMPLED
DATE TESTED
WASH SIEVE
DRY SIEVE
Temp., Deg. C
Temp. Coef. K
Wt. Dry Sample "W'
% of Total Sample
Effective Grain
Depth Diameter
L (mm)
9.40 0.0576
10.63 0.0433
12.03 0.0326
12.52 0.0210
13.01 0.0124
13.01 0.0087
13.17 0.0062
13.17 0.0044
13.42 0.0031
13.75 0.0013
11/15/10 WAR
Yes
No
22.3
0.01328
70.345
100.0
100
80
:E 60 Cl ~
.fl
i;; c: u:
"E " [:O
" 40 a_
20
COBBLES
COBBLES
TO BOULDERS
Client MWH
Job Number. 2512-53
Classification:
US Standard Sieve Size
1.5" 3/4" 3/8" #4 #10 #20 #40 #60 #100 #200
• Test Data (mm)
0.0433-
0.0326
0.0210
0.0013
Grain Size
GRAVEL SAND SILT OR CLAY (mm)
COARSE I FINE CRS I MEDIUM I FINE uses
PEBBLE GRAVEL SAND SILT CLAY
COARSE I MED I FINE \GRAN COARSE I MED I FINE
WENTWORTH
Boring No.: Stockpile 9 Sample No.: A
Depth: 0.0'
Classification Not Performed
CLIENT MWH
BORING NO.
DEPTH
SAMPLE NO.
SOIL DESCR.
LOCATION
MECHANICAL ANALYSIS-SIEVE TEST DATA
ASTM D 422
Stockpile 10
5.0'
A
1009740
Denison White Mesa Mill Project
JOB NO. 2512-53
SAMPLED
DATE TESTED
WASH SIEVE
DRY SIEVE
11/15/10 WAR
Yes
No
MOISTURE DATA WASH SIEVE ANALYSIS
HYGROSCOPIC Yes
NATURAL No
Wt. Wet Soil & Pan (g)
Wt. Dry Soil & Pan (g)
Wt. Lost Moisture (g)
Wt. of Pan Only (g)
Wt. of Dry Soil (g)
Moisture Content %
Wt. Hydrom. Sample Wet (g)
Wt. Hydrom. Sample Dry (g)
Sieve Pan Ind iv.
Number Weight Wt.+ Pan
(Size) (g) (g)
3" 0.00 0.00
1 1/2" 0.00 0.00
3/4" 0.00 0.00
3/8" 0.00 0.00
#4 0.00 0.00
#10 0.00 0.00
#20 3.04 3.07
#40 3.10 3.21
#60 3.10 3.67
#100 3.07 4.13
#200 3.21 21.12
Data entered by: MLM
Data checked by: B'(L
FileName: MHHYS1 OA
Wt. Total Sample
Wet (g) 61.57
Weight of+ #10
Before Washing (g) 0.00
Weight of + #10
256.44 After Washing (g) 0.00
251.58 Weight of -#10
4.86 Wet (g) 61.57
8.35 Weight of -#1 O
243.23 Dry (g) 60.36
2.0 Wt. Total Sample
Dry (g) 60.36
61.57 Cale. Wt. "W' (g) 60.36
60.36 Cale. Mass + #10 0.00
Ind iv. Cum. Cum. %
Wt. Wt. % Finer
Retain. Retain. Retain. By Wt.
0.00 0.00 0.0 100.0
0.00 0.00 0.0 100.0
0.00 0.00 0.0 100.0
0.00 0.00 0.0 100.0
0.00 0.00 0.0 100.0
0.00 0.00 0.0 100.0
0.03 0.03 0.0 100.0
0.11 0.14 0.2 99.8
0.57 0.71 1.2 98.8
1.06 1.77 2.9 97.1
17.91 19.68 32.6 67.4
Date: 11/18/2010
Date: llll<B(tO
HYDROMETER ANALYSIS -SEDIMENTATION DATA
ASTM D422
CLIENT MWH
BORING NO.
DEPTH
SAMPLE NO.
SOIL DESCR.
LOCATION
Hydrometer#
Sp. Gr. of Soil
Value of "alpha"
Deflocculant
Defloc. Corr'n
Meniscus Corr'n
T
Stockpile 10
5.0'
A
1009740
Denison White Mesa Mill Project
ASTM 152 H
2.65
1.00
Sodium Hexametaphosphate
5.0
-1.5
Elapsed Hydrometer Reading %
Time Original Corrected
(min) "R"
0.0
0.5 37.00 30.50
1.0 29.00 22.50
2.0 23.00 16.50
5.0 20.00 13.50
15.0 18.00 11.50
30.0 17.50 11.00
60.0 17.00 10.50
120.0 16.00 9.50
250.0 15.00 8.50
1440.0 14.00 7.50
Grain Diameter= K*(SQRT(L/T))
Data entered by: MLM
Data checked by: /Jffi-
FileName: MHHYS10A
Total
100Ra/W Sample
50.5 50.5
37.3 37.3
27.3 27.3
22.4 22.4
19.1 19.1
18.2 18.2
17.4 17.4
15.7 15.7
14.1 14.1
12.4 12.4
Date: ,~)1/18/2010
Date:~
JOB NO. 2512-53
SAMPLED
DATE TESTED
WASH SIEVE
DRY SIEVE
Temp., Deg. C
Temp. Coef. K
Wt. Dry Sample "W'
% ofTotal Sample
Effective Grain
Depth Diameter
L (mm)
10.22 0.0600
11.53 0.0450
12.52 0.0332
13.01 0.0214
13.34 0.0125
13.42 0.0089
13.50 0.0063
13.67 0.0045
13.83 0.0031
13.99 0.0013
11/15/10 WAR
Yes
No
22.4
0.01326
60.364
100.0
US Standard Sieve Size
3" 1.5" 3/4" 3/8" #4 #10 #20 #40 #llO #100 #200
100
80
:E 60 "' ~
E' ~ Q) .£ u.. c ~ CL 40
20
0
COBBLES
COBBLES
TO BOULDERS
Client MWH
Job Number: 2512-53
Classification:
0.0600.
0.0450
0.0332
0.0214
Grain Size
GRAVEL SAND SILT OR CLAY (mm)
COARSE I FINE CRS I MEDIUM I FINE
PEBBLE GRAVEL SAND SILT
COARSE I MED I FINE IGRAN COARSE I MED I FINE
Boring No.: Stockpile 10 Sample No.: A
Depth: 5.0'
Classification Not Performed
·-• Test Data (mm)
0.0013
uses
CLAY
WENTWORTH
CLIENT MWH
BORING NO.
DEPTH
SAMPLE NO ..
SOIL DESCR.
LOCATION
MECHANICAL ANALYSIS -SIEVE TEST DATA
ASTM D 422
Stockpile 11
0.0'
A
1009740
Denison White Mesa Mill Project
JOB NO. 2512-53
SAMPLED
DATE TESTED
WASH SIEVE
DRY SIEVE
10/12/10
10/26/10 DPM
Yes
No
MOISTURE DATA WASH SIEVE ANALYSIS
HYGROSCOPIC Yes
NATURAL No
Wt. Wet Soil & Pan (g)
Wt. Dry Soil & Pan (g)
Wt. Lost Moisture (g)
Wt. of Pan Only (g)
Wt. of Dry Soil (g)
Moisture Content %
Wt. Hydrom. Sample Wet (g)
Wt. Hydrom. Sample Dry (g)
Sieve Pan Ind iv.
Number Weight Wt.+ Pan
(Size) (g) (g)
3" 0.00
1 1/2" 0.00
3/4" 0.00
3/8" 0.00
#4 0.00
#10 0.00
#20 2.96
#40 3.08
#60 3.17
#100 3.06
#200 2.99
Data entered by: ft,. MLM
Data checked by: I
FileName: MHHY11 OA
0.00
0.00
0.00
1.89
3.87
1.17
3.19
3.75
7.63
8.85
20.77
103.39
101.41
1.98
3.13
98.28
2.0
66.77
65.46
lndiv. Cum.
Wt. Wt.
Retain. Retain.
0.00 0.00
0.00 0.00
0.00 0.00
1.89 1.89
3.87 5.76
1.17 6.93
0.23 0.23
0.67 0.90
4.46 5.36
5.80 11.16
17.78 28.93
Date: ,, I.. I il'I H 10/29/2010
Date:J4i-\L
Wt. Total Sample
Wet (g) 2472.51
Weight of+ #10
Before Washing (g) 7.41
Weight of + #10
After Washing (g) 6.93
Weight of -#1 O
Wet (g) 2465.10
Weight of -#1 O
Dry (g) 2416.89
Wt. Total Sample
Dry (g) 2423.82
Cale. Wt. "W' (g) 65.64
Cale. Mass + #10 0.19
Cum. %
% Finer
Retain. By Wt.
0.0 100.0
0.0 100.0
0.0 100.0
0.1 99.9
0.2 99.8
0.3 99.7
0.6 99.4
1.7 98.3
8.5 91.5
17.3 82.7
44.4 55.6
HYDROMETER ANALYSIS -SEDIMENTATION DATA
ASTM D 422
CLIENT MWH
BORING NO. Stockpile 11
DEPTH 0.0'
SAMPLE NO. A
SOIL DESCR. 1009740
LOCATION Denison White Mesa Mill Project
Hydrometer # ASTM 152 H
Sp. Gr. of Soil 2.65
Value of "alpha" 1.00
Deflocculant Sodium Hexametaphosphate
Defloc. Corr'n 5.5
Meniscus Corr'n 0.5
T
Elapsed Hydrometer Reading
Time Original Corrected
(min) "R"
0.0
0.5 33.00 28.00
1.0 27.00 22.00
2.0 23.00 18.00
5.0 20.50 15.50
15.0 19.00 14.00
30.0 18.00 13.00
60.0 17.75 12.75
120.0 17.00 12.00
250.0 16.00 11.00
1440.0 15.00 10.00
Grain Diameter= K*(SQRT(L/T))
Data entered by: I~ MLM
Data checked by:__, ...... ~­
FileName: MHHY110A
%
Total
100Ra/W Sample
42.7 42.7
33.5 33.5
27.4 27.4
23.6 23.6
21.3 21.3
19.8 19.8
19.4 19.4
18.3 18.3
16.8 16.8
15.2 15.2
Date: 1~f i I 1t? 10/29/201 o Date:~
JOB NO. 2512-53
SAMPLED
DATE TESTED
WASH SIEVE
DRY SIEVE
Temp., Deg. C
Temp. Coef. K
Wt. Dry Sample "W'
% of Total Sample
Effective Grain
Depth Diameter
L (mm)
10.88 0.0613
11.86 0.0453
12.52 0.0329
12.93 0.0211
13.17 0.0123
13.34 0.0088
13.38 0.0062
13.50 0.0044
13.67 0.0031
13.83 0.0013
10/12/10
10/26/10 DPM
Yes
No
23.2
0.01314
65.643
100.0
" c u:
i
100
80
~ 40
20
0
COBBLES
COBBLES
TO BOULDERS
Client MWH
Job Number. 2512-53
Classification:
US Standard Sieve Size
#10 #20 #40 #60 #100 #200
• Test Data (mm)
0.0613
0.0453
0.0329
0.0013
Grain Size
GRAVEL SAND SILT OR CLAY (mm)
COARSE I FINE CRS I MEDIUM I FINE uses
PEBBLE GRAVEL SAND SILT CLAY
COARSE I MED I FINE IGRAN COARSE I MED I FINE
WENTWORTH
Boring No.: Stockpile 11 Sample No.: A
Depth: 0.0'
Classification Not Performed
CLIENT MWH
BORING NO.
DEPTH
SAMPLE NO.
SOIL DESCR.
LOCATION
MECHANICAL ANALYSIS-SIEVE TEST DATA
ASTM D 422
Stockpile 12
5.0'
A
1009740
Denison White Mesa Mill Project
JOB NO. 2512-53
SAMPLED
DATE TESTED
WASH SIEVE
DRY SIEVE
10/12/10 --
10/25/10 DPM
Yes
No
MOISTURE DATA WASH SIEVE ANALYSIS
HYGROSCOPIC Yes
NATURAL No
Wt. Wet Soil & Pan (g)
Wt. Dry Soil & Pan (g)
Wt. Lost Moisture (g)
Wt. of Pan Only (g)
Wt. of Dry Soil (g)
Moisture Content %
Wt. Hydrom. Sample Wet (g)
Wt. Hydrom. Sample Dry (g)
Sieve Pan lndiv.
Number Weight Wt.+ Pan
(Size) (g) (g)
3" 0.00 0.00
1 1/2" 0.00 0.00
3/4" 0.00 0.00
3/8" 0.00 0.00
#4 0.00 0.00
#10 0.00 0.33
#20 1.79 2.05
#40 1.83 2.28
#60 1.77 2.33
#100 1.78 3.32
#200 1.78 22.86
Data entered by: MLM
Data checked by: 11{?----
FileName: MHHYS12A
95.32
91.82
3.50
3.16
88.66
4.0
61.16
58.84
lndiv. Cum.
Wt. Wt.
Retain. Retain.
0.00 0.00
0.00 0.00
0.00 0.00
0.00 0.00
0.00 0.00
0.33 0.33
0.26 0.26
0.45 0.71
0.56 1.27
1.54 2.81
21.08 23.89
Date: ,,/11/11~11/04/2010
Date:~
Wt. Total Sample
Wet (g) 1732.46
Weight of + #10
Before Washing (g) 0.36
Weight of + #10
After Washing (g) 0.33
Weight of -#10
Wet (g) 1732.10
Weight of -#1 O
Dry (g) 1666.29
Wt. Total Sample
Dry (g) 1666.62
Cale. Wt. "W' (g) 58.85
Cale. Mass + #10 0.01
Cum. %
% Finer
Retain. By Wt.
0.0 100.0
0.0 100.0
0.0 100.0
0.0 100.0
0.0 100.0
0.0 100.0
0.5 99.5
1.2 98.8
2.2 97.8
4.8 95.2
40.6 59.4
HYDROMETER ANALYSIS -SEDIMENTATION DATA
ASTM D422
CLIENT MWH
BORING NO.
DEPTH
SAMPLE NO.
SOIL DESCR.
LOCATION
Hydrometer#
Sp. Gr. of Soil
Value of "alpha"
Deflocculant
Defloc. Corr'n
Meniscus Corr'n
T
Stockpile 12
5.0'
A
1009740
Denison White Mesa Mill Project
ASTM 152 H
2.65
1.00
Sodium Hexametaphosphate
5.5
0.5
Elapsed Hydrometer Reading %
Time Original Corrected Total
(min) "R"
0.0
0.5 33.00 28.00
1.0 28.00 23.00
2.0 26.00 21.00
5.0 24.00 19.00
15.0 22.50 17.50
30.0 21.50 16.50
60.0 20.50 15.50
120.0 20.00 15.00
250.0 19.00 14.00
1440.0 17.00 12.00
Grain Diameter= K*(SQRT(L/T))
Data entered by: MLM
Data checked by: {4t-:-
FileName: MHHYS12A
100Ra/W Sample
47.6 47.6
39.1 39.1
35.7 35.7
32.3 32.3
29.7 29.7
28.0 28.0
26.3 26.3
25.5 25.5
23.8 23.8
20.4 20.4
Date: 11/ttf"~1 /04/201 O
Date:_!f¥-
JOB NO. 2512-53
SAMPLED
DATE TESTED
WASH SIEVE
DRY SIEVE
Temp., Deg. C
Temp. Coef. K
Wt. Dry Sample "W'
% of Total Sample
Effective Grain
Depth Diameter
L (mm)
10.88 0.0613
11.70 0.0449
12.03 0.0322
12.35 0.0207
12.60 0.0120
12.76 0.0086
12.93 0.0061
13.01 0.0043
13.17 0.0030
13.50 0.0013
10/12/10 --
10/25/10 DPM
Yes
No
23.2
0.01314
58.850
100.0
100
80
:E 60 "' ~
l;-
:;; c: u:
"E " e " 40 0..
20
0
COBBLES
COBBLES
TO BOULDERS
Client: MWH
Job Number. 2512-53
Classification:
US Standard Sieve Size
1.5" 3/4" 3/8' #4 #10 #20 #40 #60 #100 #200
Grain Size
GRAVEL SAND
COARSE I FINE CRS I MEDIUM I FINE
PEBBLE GRAVEL SAND
COARSE I MED I FINE IGRAN COARSE I MED I FINE
Boring No.: Stockpile 12
Depth: 5.0'
Classification Not Performed
0.0613
M449-
0.0322
0.0207
SILT
0;0120-0.0086
Oqj>i\043
0.0030
SILT OR CLAY (mm)
Sample No.: A
• Test Data (mm)
0.0013-
uses
CLAY
WENTWORTH
CLIENT MWH
BORING NO.
DEPTH
SAMPLE NO.
SOIL DESCR.
LOCATION
MECHANICAL ANALYSIS -SIEVE TEST DATA
ASTM D 422
Stockpile 13
0.0'
A
1009740
Denison White Mesa Mill Project
JOB NO. 2512-53
SAMPLED
DATE TESTED
WASH SIEVE
DRY SIEVE
10/12/10
11/09/10 WAR
Yes
No
MOISTURE DATA WASH SIEVE ANALYSIS
HYGROSCOPIC Yes
NATURAL No
Wt. Wet Soil & Pan (g)
Wt. Dry Soil & Pan (g)
Wt. Lost Moisture (g)
Wt. of Pan Only (g)
Wt. of Dry Soil (g)
Moisture Content %
Wt. Hydrom. Sample Wet (g)
Wt. Hydrom. Sample Dry (g)
Sieve Pan Ind iv.
Number Weight Wt.+ Pan
(Size) (g) (g)
3" 0.00 0.00
1 1/2" 0.00 0.00
3/4" 0.00 0.00
3/8" 0.00 0.00
#4 0.00 2.47
#10 0.00 1.65
#20 3.00 4.45
#40 3.09 4.72
#60 3.08 6.97
#100 3.03 10.05
#200 3.00 14.05
Data entered by: MLM
Data checked by: {}/d.__..
FileName: MHHYS13A
Wt. Total Sample
Wet(g) 1684.57
Weight of+ #10
Before Washing (g) 4.67
Weight of+ #1 O
103.51 After Washing (g) 4.12
99.73 Weight of -#1 0
3.78 Wet (g) 1679.90
3.13 Weight of -#1 0
96.60 Dry (g) 1617.17
3.9 Wt. Total Sample
Dry (g) 1621.29
62.53 Cale. Wt. "W' (g) 60.33
60.18 Cale. Mass + #10 0.15
Ind iv. Cum. Cum. %
Wt. Wt. % Finer
Retain. Retain. Retain. By Wt.
0.00 0.00 0.0 100.0
0.00 0.00 0.0 100.0
0.00 0.00 0.0 100.0
0.00 0.00 0.0 100.0
2.47 2.47 0.2 99.8
1.65 4.12 0.3 99.7
1.45 1.45 2.6 97.4
1.63 3.07 5.3 94.7
3.89 6.96 11.8 88.2
7.02 13.98 23.4 76.6
11.05 25.03 41.7 58.3
Date: 11/12/2010
Date: 11 /;,~/Jo I
HYDROMETER ANALYSIS -SEDIMENTATION DATA
ASTM D422
CLIENT MWH
BORING NO.
DEPTH
SAMPLE NO.
SOIL DESCR.
LOCATION
Hydrometer #
Sp. Gr. of Soil
Value of "alpha"
Deflocculant
Defloc. Corr'n
Meniscus Corr'n
T
Stockpile 13
0.0'
A
1009740
Denison White Mesa Mill Project
ASTM 152 H
2.65
1.00
Sodium Hexametaphosphate
5.0
0.0
Elapsed Hydrometer Reading %
Time Original Corrected Total
(min) "R"
0.0
0.5 30.50 25.50
1.0 27.50 22.50
2.0 25.00 20.00
5.0 22.50 17.50
15.0 21.00 16.00
30.0 19.50 14.50
60.0 19.00 14.00
120.0 18.00 13.00
250.0 17.00 12.00
1440.0 13.50 8.50
Grain Diameter= K*(SQRT(L/T))
Data entered by: MLM
Data checked by: 0J/._,
FileName: MHHYS13A
100Ra/W Sample
42.3 42.3
37.3 37.3
33.2 33.2
29.0 29.0
26.5 26.5
24.0 24.0
23.2 23.2
21.5 21.5
19.9 19.9
14.1 14.1
Date: ;; 11/12/2010
Date: // 1a/10 I
JOB NO. 2512-53
SAMPLED
DATE TESTED
WASH SIEVE
DRY SIEVE
Temp., Deg. C
Temp. Coef. K
Wt. Dry Sample "W'
% ofTotal Sample
Effective Grain
Depth Diameter
L (mm)
11.29 0.0620
11.78 0.0448
12.19 0.0322
12.60 0.0207
12.85 0.0121
13.09 0.0086
13.17 0.0061
13.34 0.0043
13.50 0.0030
14.08 0.0013
10/12/10
11/09/10 WAR
Yes
No
23.8
0.01304
60.329
100.0
US Standard Sieve Size
3" 1.5" 3/4" 3/8" #4 #10 #20 #40 #fiO #100 #200
100
80
E "' 60
~
~ ~ "' c: u:: c "' f=' "' 40 n.
20
COBBLES
COBBLES
TO BOULDERS
Client MWH
Job Number. 2512-53
Classification:
GRAVEL SAND
COARSE I FINE CRS I MEDIUM I FINE
PEBBLE GRAVEL SAND
COARSE I MED I FINE \GRAN COARSE I MED
Boring No.: Stockpile 13
Depth: 0.0'
Classification Not Performed
Grain Size
I FINE
0.0620
0.0448
0.0322
-0.0207
0.0121
Oqjl§oe1
0.0043 --0.0030 -
SILT OR CLAY (mm)
0.0013
SILT CLAY
Sample No.: A
• Test Data (mm)
uses
WENTWORTH

Updated Tailings Cover Design Report

APPENDIX A.3
APRIL 2012 COVER MATERIAL FIELD INVESTIGATION
AND LABORATORY TESTING RESULTS

Updated Tailings Cover Design Report

APPENDIX A.3.1
APRIL 2012 COVER MATERIAL FIELD INVESTIGATION

:V I,'>
le:_ '
Yf
6i >J,
,!,
i " z D
CELL 1 (EVAPORATION)
WATER
EL 5615.6
"'
LEGEND
,5 ~ EXISTING SPOT ELEVATION
-5630_ ELEVATION OF PROPOSED TOP OF COVER
,, EXISTING GROUND CONTOUR
(2011 LIDAR SURVEY)
r-• APPROX LIMITS OF BORROW STOCKPILE
'-.. -./
n MWH 2010 TEST PITS
L><J MWH 2012 TEST PITS
SCALE 3~~"""'ii-iiiiiiiiw~"""iio ~~ ..... 3~00~iiiiiiiiiiiiiiiii':!600 FT
GRAVELLY SAND
TEST PIT LOG
LEGEND
GRAVELLY SAND
TEST PIT LOG
LEGEND
FINE SAND
TEST PIT LOG
LEGEND
FINE SAND
TEST PIT LOG
LEGEND
GRAVELLY SAND
TEST PIT LOG
LEGEND
GRAVELLY SAND
TEST PIT LOG
LEGEND
COARSE SAND
TEST PIT LOG
LEGEND
SAND
TEST PIT LOG
LEGEND
FINE SAND
TEST PIT LOG
LEGEND
PROJECT: DENISON WHITE MESA RECLAMATION DATE: 04L19L2012 1255
PIT NAME: E3A._2012 FIELD ENG INEER: CAB ESPOSITO, MWH
GENERAL LOCATION : SEE BORROW LOCATIONS MAP EXCAVATOR: TULLEY LAMENAN
PIT TREND : NORTH-SOUTH CONTRACTOR: DENISON WHITE MESA
PIT FACED LOGGED : EAST
LENGlH (FT) TEST PIT LOG 0 5 10 15 20
0 I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I
-I\ I LEGEND -CLAYEY SAND ----CONTACT -----
5 --SAMPLE No. DEPTH TIME ---DWM_E3A 1_2012 o'-3' 1255
-
p -DWM_E3A2_201 2 o'-3' 1255
~ -----~1 0 ---a... -w D --------
15
--PIT WIDTH: 2' --PIT LENGTH : 10' --PIT DEPTH : 3' ---
20
SOIL UNIT SOIL DESCRIPTION AND EXCAVATION NOTES
CLAYEY SAND o'-3'
SLIGHTLY MOIST, LIGHT BROWN, CLAYEY SAND, 5-10% GRAVEL (PINK-WHITE)
SPECIAL NOTES:
I
I
I
REV RElllSIONS DATE DES BY DYl!'I BY REVIE'liED AND SIGNED BY • PR°'-ECT Na. 10113.12.
MWH F1LENAME' 2Cl1 Z-04'-2~ 1£ST P1 LOGS.DWG
SCALE F1GURE Na
NOT TO SCALE
CLAYEY SAND
TEST PIT LOG
LEGEND
CLAYEY SAND
TEST PIT LOG
LEGEND

Updated Tailings Cover Design Report

APPENDIX A.3.2
APRIL 2012 COVER MATERIAL FIELD INVESTIGATION
LABORATORY TESTING RESULTS

DENISON MINES WHITE MESA MILL
Table 1.  Summary of Laboratory Testing Results for Borrow Stockpiles
Borrow 
Stockpile ID
Estimated 
Stockpile 
Volume1 (cy)
Field 
Investigation 
Date Material Description USCS
Sample 
ID
Sample 
Depth (ft)
Gravimetric 
Water 
Content (%)
Atterberg Limits2 
LL/PL/PI (%)PI
Specific 
Gravity % Gravel %Sand %Silt % Clay % Fines
E1 15,900 Apr‐2012 Topsoil (Sandy Silty Clay) CL‐ML E1‐A0 ‐ 3 ‐‐23/18/5 5 2.61 0 41 43 16 59 118 11 1.3 x 10‐4 5.2 6.6 Topsoil
SM A 5 4.5 NP NP ‐‐0.5 77.1 13.5 8.9 22 4.4 B
SC B 12 5.7 23.3/11.2/12.1 12.1 2.64 13.1 50.3 22.6 14.0 37 6.0 U
E3 16,800 Apr‐2012 Clay with Sand CH E3‐A0 ‐ 3 ‐‐54/24/30 30 2.53 0 23 29 48 77 105 19 9.5 x 10‐5 13.6 16.5 F
E4 66,600 Oct‐2010 Sandy Clay CL A 5 8.6 30.3/14.4/15.9 15.9 ‐‐0.0 41.2 39.1 19.7 59 7.7 U
Oct‐2010 Sandy Clay CL A 6 9.0 33.2/14.3/18.9 18.9 ‐‐0.0 35.5 38.1 26.4 65 9.8 F
Apr‐2012 Clay with Sand CH E5‐B0 ‐ 3 ‐‐51/24/27 27 2.56 2 15 36 47 83 16.2 F
E6 100,700 Oct‐2010 Clay CL A 5 14.4 40.2/15.8/24.4 24.4 2.74 0.1 17.7 49.5 32.7 82 11.8 F
E7 74,900 Oct‐2010 Sandy Clay CL A 6 5.7 26.2/16.3/9.9 9.9 ‐‐0.0 30.2 56.1 13.7 70 5.9 U
Oct‐2010 Sandy Clay CL A 2 7.4 23.0/12.0/11.0 11.0 ‐‐0.0 47.0 36.9 16.1 53 6.6 U
Apr‐2012 Gravel with Clay and Sand GW‐GC E8‐B0 ‐ 4 ‐‐27/16/11 11 2.63 40.0 31.0 18.0 11.0 29 125 11 6.0 5.0 B
W1 85,700 Oct‐2010 Sandy Clay CL A 5 8.8 32.1/14.5/17.6 17.6 ‐‐0.0 40.6 37.6 21.8 59 8.4 U
Oct‐2010 Sandy Clay CL A surface 8.5 28.1/13.1/15.0 15.0 ‐‐0.2 41.5 42.5 15.8 58 6.5 U
Apr‐2012 Clayey Sand with Gravel SC W2‐A0 ‐ 3 ‐‐24/14/10 10 2.62 30 45 15.0 10.0 25 6.9 4.7 B
Apr‐2012 Silty Clayey Sand with Gravel SC‐SM W2‐B0 ‐ 5 ‐‐18/13/5 5 2.63 41 45 9.0 5.0 14 128 9 1.5 x 10‐3 3.5 3.2 B
W3 84,800 Oct‐2010 Topsoil (Sandy Silty Clay) CL‐ML A surface 4.3 20.9/16.2/4.7 4.7 ‐‐0.2 44.2 39.2 16.4 56 6.7 Topsoil
Oct‐2010 Topsoil  (Sandy Silt)ML A 5 5.3 21.9/18.0/3.9 3.9 ‐‐0.0 32.6 54.3 13.1 67 5.7 Topsoil
Apr‐2012 Topsoil (Sandy Silty Clay) CL‐ML W4‐B0 ‐ 4 ‐‐26/19/7 7 2.60 0 38 44 18 62 7.2 Topsoil
Sandy Clay CL W5‐A0 ‐ 4 ‐‐27/18/9 9 2.61 1 49 32 18 50 7.0 7.2 U
Clayey Sand with Gravel SC W5‐B0 ‐ 4 ‐‐24/15/9 9 2.63 29 44 19 8 27 122 10 1.1 x 10‐3 3.6 4.1 B
W6 93,400 Oct‐2010 Topsoil (Sandy Silty Clay) CL‐ML A surface 3.3 23.1/16.5/6.6 6.6 ‐‐0.0 34.3 51.8 13.9 66 5.9 Topsoil
W7 39,500 Oct‐2010 Sandy Clay CL A 5 8.7 28.0/10.6/17.3 17.3 2.67 0.0 43.8 43.1 13.1 56 5.7 U
Silty Sand with Gravel SM W8‐A0 ‐ 3 ‐‐NP NP 2.64 35 51 9 5 14 117 13 1.2 x 10‐3 5.0 3.2 B
Silty Sand with Gravel SM W8‐B0 ‐ 4 ‐‐NP NP 2.66 32 40 18 10 28 6.4 4.7 B
Oct‐2010 Sandy Clay CL A surface 4.4 25.9/12.3/13.5 13.5 ‐‐0.0 37.4 45.2 17.4 63 7.0 U
Apr‐2012 Sandy Clay CL W9‐B0 ‐ 4 ‐‐28/16/12 12 2.63 6 44 35 15 50 115 14 4.1 x 10‐4 7.7 6.3 U
Notes:  14.0
1. Volumes estimated using 2009 topography and assuming a relatively flat bottom surface, except for stockpiles W5, W8 and W9.  The volumes for stockpiles  W8 and W9 were estimated by comparing the 2011 versus 2009 topography.
The volume for stockpile W5 was estimated using a combination of both methods.  
2. LL = Liquid Limt, PL = Plastic Limit, PI = Plasticity Index (PI = LL‐PL)
3. Gravel = 4.75 mm to 75 mm, Sand = 0.075 mm to 4.75 mm, Fines:  Silt = 0 .075 mm to 0.002 mm, Clay = less than 0.002 mm
4. Group B (broadly graded), Group U (uniformly graded), and Group F (fine textured) based on evaluation of gradations and Benson (2012)*.
*Benson, C., 2012.  Electronic communication from Craig Benson, University of Wisconsin‐Madison, to Melanie Davis, MWH Americas, Inc., regarding evaluation of gradations performed for potential cover soils for White Mesa, May 20.
W9 60,250
Particle Size3
E8 227,300
W2 584,500
W4 90,000
W5 2,001,160 Apr‐2012
W8 178,411 Apr‐2012
E5 68,800
Gravimetric 
Water Content 
Est. using Rawls 
Eqn.3 (%)
E2 92,000 Oct‐2010 Silty Sand/Clayey Sand 
15 Bar 
Grav. 
Moist. 
Cont. (%)
Sat. Hyd. 
Conc. 
(cm/s)
Max. 
Density 
(pcf)
Opt. 
Moist. 
Cont. (%)Soil Group4
White Mesa_2010 and 2012 lab results_8‐6‐12.xlsx
2010 and 2012 Cover Soil Gradations_mmd.xlsx
0
20
40
60
80
100
0.00010.0010.010.1110100
Pe
r
c
e
n
t

F
i
n
e
r

(
%
)
Particle Size (mm)
E1-A (topsoil)
E3-A
E5-B
E8-B
W2-A
W2-B
W4-B (topsoil)
W5-A
W5-B
W8-A
W8-B
W9-B
E2A-2010
E2B-2010
E4-2010
E5-2010
E6-2010
E7-2010
E8-2010
W1-2010
W2-2010
W3-2010 (topsoil)
W4-2010 (topsoil)
W6-2010 (topsoil)
W7-2010
W9-2010
1.
5

i
n
c
h
Figure 1. White Mesa Cover Borrow Stockpiles Gradations from 2010 and
2012 Laboratory Testing
No
.

2
0
0
No
.

1
0
0
No
.

6
0
No
.

2
0
No
.

1
0
No
.

4
3/
8

i
n
c
h
3/
4

i
n
c
h
1

i
n
c
h
2010 and 2012 Cover Soil Gradations_mmd.xlsx
1
1
/
2
-
i
n
c
h
3/
4
-
i
n
c
h
1-
i
n
c
h
3/
8
-
i
n
c
h
No
.

4
No
.

1
0
No
.

2
0
No
.
6
0
No
.

1
0
0
No
.
2
0
0
0
20
40
60
80
100
0.00010.0010.010.1110100
Pe
r
c
e
n
t

F
i
n
e
r

(
%
)
Particle Size (mm)
E3-A
E5-B
E8-B
W2-A
W2-B
W5-A
W5-B
W8-A
W8-B
W9-B
E2A-2010
E2B-2010
E4-2010
E5-2010
E6-2010
E7-2010
E8-2010
W1-2010
W2-2010
W7-2010
W9-2010
Group F
(5% of total
cover quantity
available)
Group B
PI = NP -12
(48% of total
cover quantity
available)
Group U
PI = 9-18
(47% of total
cover quantity
available)
Figure 2. White Mesa Cover Borrow Stockpiles Gradations from
2010 and 2012 Laboratory Testing (excluding topsoil samples)
Note: Group B (broadly graded), Group U (uniformly graded), and Group F
(fine textured) based on evaluation of gradations and Benson (2012)*.
*Benson, C., 2012. Electronic communication from Craig Benson, University of Wisconsin-Madison, to Melanie Davis, MWH Americas, Inc., regarding evaluation of gradations performed for potential cover soils for White
Mesa, May 20.
INDEX PROPERTIES OF SOILS FROM BLANDING, UTAH
by
C.H. Benson and X. Wang
Geotechnics Report No. 12-37
Wisconsin Geotechnics Laboratory
University of Wisconsin-Madison
Madison, Wisconsin 53706
USA
20 May 2012

1
1. SCOPE

This report describes results of laboratory tests conducted to determine the specific gravity of
solids, Atterberg Limits, and particle size distribution of twelve (12) soil samples from Blanding,
Utah. The soils were delivered to the Wisconsin Geotechnics Laboratory as disturbed samples
in 20-L buckets (2 buckets per soil).

2. METHODS

The two buckets of soil for each sample were inspected, thoroughly blended by hand, and then
tested to determine the specific gravity of solids, Atterberg Limits, and particle size distribution.
The following ASTM methods were employed on the blended samples:

D 422 Standard Test Method for Particle-Size Analysis of Soils

D 854 Standard Test Methods for Specific Gravity of Soil Solids by Water Pycnometer

D 4318 Standard Test Methods for Liquid Limit, Plastic Limit, and Plasticity Index of
Soils

3. RESULTS

A summary of the index properties is provided in Table 1. The particle size distribution curves
are summarized in Fig. 1. Data recorded from the tests are in the appendix.

Table 1. Summary of index properties for soils from Blanding, Utah.
Sample ID Liquid
Limit
Plastic
Limit
Plasticity
Index
Specific
Gravity
Gravel
(%)
Sand
(%)
Fines
(%)
E1-A 23 18 5 2.61 0 41 59
E3-A 54 24 30 2.53 0 23 77
E5-B 51 24 27 2.56 2 15 83
E8-B 27 16 11 2.63 40 31 29
W2-A 24 14 10 2.62 30 45 25
W4-A 26 19 7 2.60 0 38 62
W2-B 18 13 5 2.63 41 45 14
W5-A 27 18 9 2.61 1 49 50
W5-B 24 15 9 2.63 29 44 27
W8-A 17 NP NP 2.64 35 51 14
W8-B 15 NP NP 2.66 32 40 28
W9-B 28 16 12 2.63 6 44 50

2

Fig. 1. Particle size distribution curves for soils from Blanding, Utah.
0
20
40
60
80
100
0.00010.0010.010.1110100
E1-A
E3-A
E5-B
E8-B
W2-A
W4-A
W2-B
W5-A
W5-B
W8-A
W8-B
W9-B
Pe
r
c
e
n
t

F
i
n
e
r

(
%
)
Particle Size (mm)

3

APPENDIX:

DATA SHEETS

Test No.E1-A E3-A E5-B E8-B W2-A W4-A W2-B W5-A W5-B W8-A W8-B W9-B
Volumetric Flask No.500 500 500 500 500 500 500 500 500 500 500 500
Weight of Flask (g)W1 170.7 170.7 170.7 170.7 170.7 170.7 170.7 170.7 170.7 170.7 170.7 170.7
Dry Soil (g)W2 92.7 127.3 117.6 132.9 131.5 138.9 127.6 124.8 132.3 96.8 116.5 91.6
Weight of Flask + Dry Soil (g)W1 + W2 263.4 298 288.3 303.6 302.2 309.6 298.3 295.5 303 267.5 287.2 262.3
Weight of Flask + Dry Soil + Water (g)W1 + W2 + W3 727.2 747.1 741.7 752.5 751.4 755.6 749.2 747.1 752.1 730.2 742.8 726.8
Temperature T1 23 23 23 23 23 23 23 23 23 23 23 23
Weight of Flask + Water (g)W1 + W4 670 670 670 670 670 670 670 670 670 670 670 670
Temperature T2 23 23 23 23 23 23 23 23 23 23 23 23
Weight of Equal Volume of Water W4 - W3 35.5 50.2 45.9 50.4 50.1 53.3 48.4 47.7 50.2 36.6 43.7 34.8
Gs at Temperature W2 / (W4 - W3)2.611 2.536 2.562 2.637 2.625 2.606 2.636 2.616 2.635 2.645 2.666 2.632
A 0.9982 0.9982 0.9982 0.9982 0.9982 0.9982 0.9982 0.9982 0.9982 0.9982 0.9982 0.9982
Gs at Temperature of 20oC A Gs 2.61 2.53 2.56 2.63 2.62 2.60 2.63 2.61 2.63 2.64 2.66 2.63
Specific Gravity ASTM D854
Wisconsin Geotechnics Laboratory
Group Target Moisture WT of WT of Wet Soil WT of Dry Soil Water Actual Blow Liquid
#N Can Moisture Can + Moisture Can + Moisture Can Content Number Limit
#(G)(g)(g)(%)N
30 - 40 3 23.7 57.2 51.1 22.3 56
20 - 30 1 31.6 63.3 57.3 23.3 24
10 - 20 2 31.4 70.6 63.1 23.7 12
30 - 40 22 31.2 59.5 50.2 48.9 58
20 - 30 7 31.4 73.7 59.1 52.7 30
10 - 20 h 31.7 68.2 55.1 56.0 19
30 - 40 j 31.4 66.4 55 48.3 37
20 - 30 2,4 31.7 70.3 57.1 52.0 24
10 - 20 1 29.6 67.8 54.3 54.7 14
30 - 40 b 31.9 70.2 62.8 23.9 55
20 - 30 5 31.1 78.9 69.1 25.8 30
10 - 20 d1 28.7 78.8 67.6 28.8 14
Group Moisture WT of WT of Wet Soil WT of Dry Soil Water Plastic
#Can Moisture Can + Moisture Can + Moisture Can Content Limit
#(G)(g)(g)(%)
E1-A 1 31.6 40.1 38.8 18.1 18
E3-A 6 31.3 49.4 45.9 24.0 24
E5-B 10 26.5 48.2 44 24.0 24
E8-B 3 28.9 49 46.3 15.5 16
Wisconsin Geotechnics Laboratory
Plastic Limit Test (ASTM D 4318)
23
54
51
27
E1-A
E3-A
E5-B
E8-B
Liquid Limit Test (ASTM D 4318)
48.0
49.0
50.0
51.0
52.0
53.0
54.0
55.0
56.0
57.0
10 100
Wa
t
e
r

C
o
n
t
e
n
t

%

Blow #
E3-A
Group_2
47.0
48.0
49.0
50.0
51.0
52.0
53.0
54.0
55.0
10 100
Wa
t
e
r

C
o
n
t
e
n
t
,

%

Blow #
E5-B
Group_3
23.0
24.0
25.0
26.0
27.0
28.0
29.0
30.0
10 100
Wa
t
e
r

C
o
n
t
e
n
t
,

%

Blow #
E8-B
Group_4
22.0
22.2
22.4
22.6
22.8
23.0
23.2
23.4
23.6
23.8
10 100
Wa
t
e
r

C
o
n
t
e
n
t

%

Blow #
E1-A
Group_1
Group Target Moisture WT of WT of Wet Soil WT of Dry Soil Water Actual Blow Liquid
#N Can Moisture Can + Moisture Can + Moisture Can Content Number Limit
#(G)(g)(g)(%)N
30 - 40 b 31.9 78.4 70.1 21.7 51
20 - 30 5 31.1 83.4 73.4 23.6 23
10 - 20 10 26.5 79.1 68.7 24.6 18
30 - 40 3 28.9 91.5 78.8 25.5 29
20 - 30 9 31.5 84.6 73.4 26.7 21
10 - 20 d 28.7 78.4 67.3 28.8 11
30 - 40 h 31.7 68.1 62.2 19.3 12
20 - 30 j 31.4 85.5 77 18.6 20
10 - 20 7 31.4 88.7 80 17.9 33
30 - 40 1 31.5 81.8 71.8 24.8 45
20 - 30 6 31.3 87.1 75.1 27.4 19
10 - 20 2 31.4 78.5 67.7 29.8 12
Group Moisture WT of WT of Wet Soil WT of Dry Soil Water Plastic
#Can Moisture Can + Moisture Can + Moisture Can Content Limit
#(G)(g)(g)(%)
W2-A 1 29.6 42.3 40.7 14.4 14
W4-A 22 31.2 49.4 46.5 19.0 19
W2-B 3 23.7 37.4 35.8 13.2 13
W5-A 2 31.7 52.5 49.4 17.5 18
Wisconsin Geotechnics Laboratory
Plastic Limit Test (ASTM D 4318)
24
26
18
27
W2-A
W4-A
W2-B
W5-A
Liquid Limit Test (ASTM D 4318)
25.0
25.5
26.0
26.5
27.0
27.5
28.0
28.5
29.0
10 100
Wa
t
e
r

C
o
n
t
e
n
t

%

Blow #
W4-A
Group_6
17.8
18.0
18.2
18.4
18.6
18.8
19.0
19.2
19.4
19.6
10 100
Wa
t
e
r

C
o
n
t
e
n
t
,

%

Blow #
W2-B
Group_7
23.0
24.0
25.0
26.0
27.0
28.0
29.0
30.0
31.0
10 100
Wa
t
e
r

C
o
n
t
e
n
t
,

%

Blow #
W5-A
Group_8
21.5
22.0
22.5
23.0
23.5
24.0
24.5
25.0
10 100
Wa
t
e
r

C
o
n
t
e
n
t

%

Blow #
W2-A
Group_5
Group Target Moisture WT of WT of Wet Soil WT of Dry Soil Water Actual Blow Liquid
#N Can Moisture Can + Moisture Can + Moisture Can Content Number Limit
#(G)(g)(g)(%)N
30 - 40 f1 31.5 68.5 61.7 22.5 56
20 - 30 2 31.7 67.4 60.7 23.1 28
10 - 20 9 31.5 65.2 58.5 24.8 13
30 - 40 6 31.3 70.2 63.7 20.1 15
20 - 30 5 31.1 73.8 66.1 22.0 9
10 - 20 d 28.7 86 74.6 24.8 5
30 - 40 1 31.5 71.7 64.6 21.5 14
20 - 30 2 31.4 73.2 64.8 25.1 6
10 - 20 b 31.9 81.2 75.2 13.9 28
30 - 40 j 31.4 75.8 66.9 25.1 47
20 - 30 1 29.5 85.9 73.6 27.9 21
10 - 20 10 26.5 81.1 68.3 30.6 12
Group Moisture WT of WT of Wet Soil WT of Dry Soil Water Plastic
#Can Moisture Can + Moisture Can + Moisture Can Content Limit
#(G)(g)(g)(%)
9 7 31.3 54.3 51.3 15.0 15
10 NP
11 3 23.7 37.4 35.5 16.1 16
12 h 31.7 52.8 49.9 15.9 16
Wisconsin Geotechnics Laboratory
Plastic Limit Test (ASTM D 4318)
Liquid Limit Test (ASTM D 4318)
9
10
11
12
24
17
15
28
15.0
17.0
19.0
21.0
23.0
25.0
27.0
1 10 100
Wa
t
e
r

C
o
n
t
e
n
t

%

Blow #
W8-A
Group_10
0.0
5.0
10.0
15.0
20.0
25.0
30.0
1 10 100
Wa
t
e
r

C
o
n
t
e
n
t
,

%

Blow #
W8-B
Group_11
23.0
24.0
25.0
26.0
27.0
28.0
29.0
30.0
31.0
32.0
10 100
Wa
t
e
r

C
o
n
t
e
n
t
,

%

Blow #
W9-B
Group_12
22.0
22.5
23.0
23.5
24.0
24.5
25.0
10 100
Wa
t
e
r

C
o
n
t
e
n
t

%

Blow #
W5-B
Group_9
0
10
20
30
40
50
60
70
80
90
100
0.00010.0010.010.1110100
Pe
r
c
e
n
t

F
i
n
e
r

(
%
)

Particle Size (mm)
Mechanical
Sedimentation
E1-A
Sample ID:Test Date:
Weight of Air Dry Sample =791 g Initials:
Sieve No.Sieve
Opening
Weight Retained
on Each Sieve
Percent Retained
on Each Sieve
Cumulative Percent
Retained Percent Finer
(mm)(g)(%)(%)(%)
2"50.8 0.00 0 0 100
1"25.4 0.00 0.00 0.00 100.00
3/4"19.0 0.00 0.00 0.00 100.00
1/2"12.7 0.00 0.00 0.00 100.00
3/8"9.52 0.00 0.00 0.00 100.00
4 4.75 0.51 0.06 0.06 99.94
10 2.00 1.87 0.24 0.30 99.70
20 0.85 1.93 0.24 0.55 99.45
40 0.425 3.79 0.48 1.02 98.98
60 0.250 21.63 2.74 3.76 96.24
100 0.106 44.60 5.64 9.40 90.60
200 0.075 246.73 31.21 40.61 59.39
Pan 469.53 59.39 100.00 0.00
Total Weight (g) =791
Geotechnics Laboratory
E1-A
Mechanical Particle Size Analysis - ASTM D 422
University of Wisconsin-Madison
www.uwgeoengineering.org
Sample ID:Temp. Correction, A 0.0130
Specific Gravity, Gs = 2.61 Hydrometer Type:ASTM 152H
Dry Weight of Soil, W (g) =50 Temperature of Test, C 23
Meniscus Correction, Fm =0.5 Zero Correction, Fz 6
Temperature Correction, FT =0.9 a 1.010
40
98.98
Time Hydrometer Rcp Rcl L D Final Percent Percent
(min)Reading, R (cm)(mm)Finer (%)Finer
0 0.425 98.98
0.3 32 26.90 40.90 11.05 0.086619 53.76 54.32
0.5 30 24.90 38.90 11.38 0.062149 49.77 50.28
1.0 20 14.90 28.90 13.01 0.046998 29.78 30.09
2.0 19 13.90 27.90 13.18 0.033441 27.78 28.07
4.0 17 11.90 25.90 13.50 0.023938 23.78 24.03
8.0 16 10.90 24.90 13.67 0.017029 21.79 22.01
15.0 15.5 10.40 24.40 13.75 0.012473 20.79 21.00
30.0 15 9.90 23.90 13.83 0.008846 19.79 19.99
61.0 14.5 9.40 23.40 13.91 0.006222 18.79 18.98
120.0 14 8.90 22.90 13.99 0.004449 17.79 17.97
240.0 13.5 8.40 22.40 14.08 0.003155 16.79 16.96
1486.0 13 7.90 21.90 14.16 0.001272 15.79 15.95
2921.0 12.5 7.40 21.40 14.24 0.000910 14.79 14.94
Formulas:
FT = -4.85 + 0.25 T a = f(Gs) = 1.65 Gs / (2.65 (Gs - 1))
Rcp = R + FT - FZ Rcl = R + Fm
L = f(R) = 16.3 - 0.1641 Rcl
η = 0.0911 x 10-4 (g-s/cm2) (if T = 25 oC)
Geotechnics Laboratory
University of Wisconsin-Madison
Sedimentation Particle Size Analysis - ASTM D 422
E1-A
Material Max. Size and Percentage (%)
www.uwgeoengineering.org
()()ωγ−
η==1G
30T,GfA
s
s
10050
aRFinerPercentcp=
0
10
20
30
40
50
60
70
80
90
100
0.00010.0010.010.1110100
Pe
r
c
e
n
t

F
i
n
e
r

(
%
)

Particle Size (mm)
E3-A
Mechanical
Sedimentation
Sample ID:Test Date:
Weight of Air Dry Sample =929 g Initials:
Sieve No.Sieve
Opening
Weight Retained
on Each Sieve
Percent Retained
on Each Sieve
Cumulative Percent
Retained Percent Finer
(mm)(g)(%)(%)(%)
2"50.8 0.00 0 0 100
1"25.4 0.00 0.00 0.00 100.00
3/4"19 0.00 0.00 0.00 100.00
1/2"12.7 0.00 0.00 0.00 100.00
3/8"9.52 0.00 0.00 0.00 100.00
4 4.75 4.08 0.44 0.44 99.56
10 2.00 18.60 2.00 2.44 97.56
20 0.85 15.91 1.71 4.16 95.84
40 0.43 10.95 1.18 5.34 94.66
60 0.25 21.46 2.31 7.65 92.35
100 0.11 54.56 5.88 13.52 86.48
200 0.08 90.46 9.74 23.26 76.74
Pan 712.52 76.74 100.00 0.00
Total Weight (g) =929
Geotechnics Laboratory
E3-A
Mechanical Particle Size Analysis - ASTM D 422
University of Wisconsin-Madison
www.uwgeoengineering.org
Sample ID:Temp. Correction, A 0.0129
Specific Gravity, Gs = 2.63 Hydrometer Type:ASTM 152H
Dry Weight of Soil, W (g) =50 Temperature of Test, C 23
Meniscus Correction, Fm =0.5 Zero Correction, Fz 6
Temperature Correction, FT =0.9 a 1.005
200
94.66
Time Hydrometer Rcp Rcl L D Final Percent Percent
(min)Reading, R (cm)(mm)Finer (%)Finer
0 0.425 94.66
0.2 40 34.90 64.90 9.74 0.0808 66.40 70.14
0.5 38 32.90 62.90 10.07 0.0581 62.59 66.12
1.0 37 31.90 61.90 10.23 0.0414 60.69 64.11
2.0 35 29.90 59.90 10.56 0.0298 56.88 60.09
4.0 34 28.90 58.90 10.72 0.0212 54.98 58.08
8.0 33.5 28.40 58.40 10.80 0.0150 54.03 57.07
15.0 33 27.90 57.90 10.89 0.0110 53.08 56.07
30.0 32 26.90 56.90 11.05 0.0079 51.18 54.06
60.0 31 25.90 55.90 11.21 0.0056 49.27 52.05
123.0 30 24.90 54.90 11.38 0.0039 47.37 50.04
240.0 29 23.90 53.90 11.54 0.0028 45.47 48.03
1475.0 25 19.90 49.90 12.19 0.0012 37.86 39.99
2910.0 19 13.90 43.90 13.18 0.0009 26.44 27.93
Formulas:
FT = -4.85 + 0.25 T a = f(Gs) = 1.65 Gs / (2.65 (Gs - 1))
Rcp = R + FT - FZ Rcl = R + Fm
L = f(R) = 16.3 - 0.1641 Rcl
η = 0.0911 x 10-4 (g-s/cm2) (if T = 25 oC)
Geotechnics Laboratory
University of Wisconsin-Madison
Sedimentation Particle Size Analysis - ASTM D 422
E3-A
Material Max. Size and Percentage (%)
www.uwgeoengineering.org
()()()mint
cmLAmmD=()()ωγ−
η==1G
30T,GfA
s
s
10050
aRFinerPercentcp=
0
10
20
30
40
50
60
70
80
90
100
0.00010.0010.010.1110100
Pe
r
c
e
n
t

F
i
n
e
r

(
%
)

Particle Size (mm)
E5-B
Mechanical
Sedimentaion
Sample ID:Test Date:
Weight of Air Dry Sample =890 g Initials:
Sieve No.Sieve Opening Weight Retained
on Each Sieve
Percent Retained
on Each Sieve
Cumulative Percent
Retained Percent Finer
(mm)(g)(%)(%)(%)
2"50.800 0.00 0 0 100
1"25.400 0.00 0.00 0.00 100.00
3/4"19.000 0.00 0.00 0.00 100.00
1/2"12.700 4.48 0.50 0.50 99.50
3/8"9.520 1.70 0.19 0.69 99.31
4 4.750 7.51 0.84 1.54 98.46
10 2.000 11.13 1.25 2.79 97.21
20 0.850 9.82 1.10 3.89 96.11
40 0.425 8.19 0.92 4.81 95.19
60 0.250 16.44 1.85 6.66 93.34
100 0.106 30.31 3.41 10.07 89.93
200 0.075 64.45 7.25 17.32 82.68
Pan 735.52 82.68 100.00 0.00
Total Weight (g) =890
Geotechnics Laboratory
University of Wisconsin-Madison
Mechanical Particle Size Analysis - ASTM D 422
E5-B
www.uwgeoengineering.org
Sample ID:Temp. Correction, A 0.0132
Specific Gravity, Gs = 2.56 Hydrometer Type:ASTM 152H
Dry Weight of Soil, W (g) =50 Temperature of Test, C 23
Meniscus Correction, Fm =0.5 Zero Correction, Fz 6
Temperature Correction, FT =0.9 a 1.022
40
95.19
Time Hydrometer Rcp Rcl L D Final Percent Percent
(min)Reading, R (cm)(mm)Finer (%)Finer
0.0 0.425 95.19
0.2 45 39.90 72.90 8.92 0.0791 77.64 81.57
0.5 43 37.90 70.90 9.25 0.0569 73.75 77.48
1.0 41 35.90 68.90 9.58 0.0410 69.86 73.39
2.0 39.5 34.40 67.40 9.82 0.0293 66.94 70.33
4.0 38.5 33.40 66.40 9.99 0.0209 64.99 68.28
8.0 38 32.90 65.90 10.07 0.0148 64.02 67.26
15.0 37 31.90 64.90 10.23 0.0109 62.07 65.21
31.0 36 30.90 63.90 10.40 0.0077 60.13 63.17
61.0 35 29.90 62.90 10.56 0.0055 58.18 61.13
120.0 33 27.90 60.90 10.89 0.0040 54.29 57.04
243.0 30 24.90 57.90 11.38 0.0029 48.45 50.90
1455.0 26 20.90 53.90 12.03 0.0012 40.67 42.73
2890.0 23 17.90 50.90 12.52 0.0009 34.83 36.59
Formulas:
FT = -4.85 + 0.25 T a = f(Gs) = 1.65 Gs / (2.65 (Gs - 1))
Rcp = R + FT - FZ Rcl = R + Fm
L = f(R) = 16.3 - 0.1641 Rcl
η = 0.0911 x 10-4 (g-s/cm2) (if T = 25 oC)
Geotechnics Laboratory
University of Wisconsin-Madison
Sedimentation Particle Size Analysis - ASTM D 422
E5-B
Material Max. Size and
Percentage (%)
www.uwgeoengineering.org
()()()mint
cmLAmmD=()()ωγ−
η==1G
30T,GfA
s
s
10050
aRFinerPercentcp=
0
10
20
30
40
50
60
70
80
90
100
0.00010.0010.010.1110100
Pe
r
c
e
n
t

F
i
n
e
r

(
%
)

Particle Size (mm)
E8-B
Mechanical
Sedimentation
Sample ID:Test Date:
Weight of Air Dry Sample =1639 g Initials:
Sieve No.Sieve Opening Weight Retained
on Each Sieve
Percent Retained
on Each Sieve
Cumulative
Percent Retained Percent Finer
(mm)(g)(%)(%)(%)
2"50.800 0.00 0 0 100
1"25.400 296.07 18.07 18.07 81.93
3/4"19.000 84.17 5.14 23.20 76.80
1/2"12.700 106.06 6.47 29.68 70.32
3/8"9.520 70.74 4.32 33.99 66.01
4 4.750 98.02 5.98 39.97 60.03
10 2.000 63.00 3.84 43.82 56.18
20 0.850 25.01 1.53 45.34 54.66
40 0.425 34.36 2.10 47.44 52.56
60 0.250 86.55 5.28 52.72 47.28
100 0.106 129.17 7.88 60.60 39.40
200 0.075 173.98 10.62 71.22 28.78
Pan 471.62 28.78 100.00 0.00
Total Weight (g) =1639
Geotechnics Laboratory
University of Wisconsin-Madison
Mechanical Particle Size Analysis - ASTM D 422
E8-B
www.uwgeoengineering.org
Sample ID:Temp. Correction, A 0.0129
Specific Gravity, Gs = 2.63 Hydrometer Type:ASTM 152H
Dry Weight of Soil, W (g) =50 Temperature of Test, C 23
Meniscus Correction, Fm =0.5 Zero Correction, Fz 6
Temperature Correction, FT =0.9 a 1.005
40
52.56
Time Hydrometer Rcp Rcl L D Final Percent Percent
(min)Reading, R (cm)(mm)Finer (%)Finer
0.0 0.425 52.56
0.2 33 27.90 45.40 10.89 0.0854 29.47 56.07
0.5 29 23.90 41.40 11.54 0.0622 25.24 48.03
1.0 25 19.90 37.40 12.19 0.0452 21.02 39.99
2.0 22.5 17.40 34.90 12.60 0.0325 18.38 34.97
4.0 21 15.90 33.40 12.85 0.0232 16.79 31.95
8.0 20 14.90 32.40 13.01 0.0165 15.74 29.94
15.0 19.5 14.40 31.90 13.09 0.0121 15.21 28.94
30.0 19 13.90 31.40 13.18 0.0086 14.68 27.93
60.0 18.5 13.40 30.90 13.26 0.0061 14.15 26.93
120.0 17.5 12.40 29.90 13.42 0.0043 13.10 24.92
242.0 16.5 11.40 28.90 13.58 0.0031 12.04 22.91
1438.0 15 9.90 27.40 13.83 0.0013 10.46 19.90
2873.0 13 7.90 25.40 14.16 0.0009 8.34 15.88
Formulas:
FT = -4.85 + 0.25 T a = f(Gs) = 1.65 Gs / (2.65 (Gs - 1))
Rcp = R + FT - FZ Rcl = R + Fm
L = f(R) = 16.3 - 0.1641 Rcl
η = 0.0911 x 10-4 (g-s/cm2) (if T = 25 oC)
Geotechnics Laboratory
University of Wisconsin-Madison
E8-B
Material Max. Size and
Percentage (%)
Sedimentation Particle Size Analysis - ASTM D 422
www.uwgeoengineering.org
()()()mint
cmLAmmD=()()ωγ−
η==1G
30T,GfA
s
s
10050
aRFinerPercentcp=
0
10
20
30
40
50
60
70
80
90
100
0.00010.0010.010.1110100
Pe
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F
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%
)

Particle Size (mm)
W2-A
Mechanical
Sedimentation
Sample ID:Test Date:
Weight of Air Dry Sample =1766 g Initials:
Sieve No.Sieve Opening Weight Retained
on Each Sieve
Percent Retained on
Each Sieve
Cumulative
Percent Retained Percent Finer
(mm)(g)(%)(%)(%)
2"50.800 0.00 0 0 100
1"25.400 120.36 6.82 6.82 93.18
3/4"19.000 48.06 2.72 9.54 90.46
1/2"12.700 99.19 5.62 15.16 84.84
3/8"9.520 102.84 5.82 20.98 79.02
4 4.750 167.06 9.46 30.44 69.56
10 2.000 177.05 10.03 40.47 59.53
20 0.850 110.90 6.28 46.75 53.25
40 0.425 68.17 3.86 50.61 49.39
60 0.250 104.06 5.89 56.51 43.49
100 0.106 159.98 9.06 65.57 34.43
200 0.075 164.67 9.33 74.89 25.11
Pan 443.32 25.11 100.00 0.00
Total Weight (g) =1766
Geotechnics Laboratory
University of Wisconsin-Madison
Mechanical Particle Size Analysis - ASTM D 422
W2-A
www.uwgeoengineering.org
Sample ID:Temp. Correction, A 0.0130
Specific Gravity, Gs = 2.62 Hydrometer Type:ASTM 152H
Dry Weight of Soil, W (g) =50 Temperature of Test, C 23
Meniscus Correction, Fm =0.5 Zero Correction, Fz 6
Temperature Correction, FT =0.9 a 1.007
40
49.39
Time Hydrometer Rcp Rcl L D Final Percent Percent
(min)Reading, R (cm)(mm)Finer (%)Finer
0.0 0.425 49.39
0.3 31 25.90 43.90 11.21 0.0870 25.77 52.17
0.5 27 21.90 39.90 11.87 0.0633 21.79 44.12
1.0 24 18.90 36.90 12.36 0.0457 18.80 38.07
2.0 22 16.90 34.90 12.69 0.0327 16.81 34.04
4.0 21 15.90 33.90 12.85 0.0233 15.82 32.03
8.0 20.5 15.40 33.40 12.93 0.0165 15.32 31.02
15.0 20 14.90 32.90 13.01 0.0121 14.82 30.02
30.0 19.5 14.40 32.40 13.09 0.0086 14.33 29.01
60.0 19 13.90 31.90 13.18 0.0061 13.83 28.00
120.0 18 12.90 30.90 13.34 0.0043 12.83 25.99
240.0 16 10.90 28.90 13.67 0.0031 10.84 21.96
415.0 15.5 10.40 28.40 13.75 0.0024 10.35 20.95
1465.0 15 9.90 27.90 13.83 0.0013 9.85 19.94
2866.0 14 8.90 26.90 13.99 0.0009 8.85 17.93
0.0 0 -5.10 12.90 16.28 #DIV/0!-5.07 -10.27
0.0 0 -5.10 12.90 16.28 #DIV/0!-5.07 -10.27
Formulas:
FT = -4.85 + 0.25 T a = f(Gs) = 1.65 Gs / (2.65 (Gs - 1))
Rcp = R + FT - FZ Rcl = R + Fm
L = f(R) = 16.3 - 0.1641 Rcl
η = 0.0911 x 10-4 (g-s/cm2) (if T = 25 oC)
Geotechnics Laboratory
University of Wisconsin-Madison
Sedimentation Particle Size Analysis - ASTM D 422
W2-A
Material Max. Size and
Percentage (%)
www.uwgeoengineering.org
()()()mint
cmLAmmD=()()ωγ−
η==1G
30T,GfA
s
s
10050
aRFinerPercentcp=
0
10
20
30
40
50
60
70
80
90
100
0.00010.0010.010.1110100
Pe
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(
%
)

Particle Size (mm)
W4-A
Mechanical
Sedimentation
Sample ID:Test Date:
Weight of Air Dry Sample =1051 g Initials:
Sieve No.Sieve
Opening
Weight Retained
on Each Sieve
Percent Retained
on Each Sieve
Cumulative
Percent Retained Percent Finer
(mm)(g)(%)(%)(%)
2"50.800 0.00 0 0 100
1"25.400 0.00 0.00 0.00 100.00
3/4"19.000 0.00 0.00 0.00 100.00
1/2"12.700 0.00 0.00 0.00 100.00
3/8"9.520 0.00 0.00 0.00 100.00
4 4.750 1.15 0.11 0.11 99.89
10 2.000 1.75 0.17 0.28 99.72
20 0.850 2.75 0.26 0.54 99.46
40 0.425 7.72 0.73 1.27 98.73
60 0.250 23.69 2.25 3.53 96.47
100 0.106 24.75 2.36 5.88 94.12
200 0.075 342.77 32.62 38.50 61.50
Pan 646.26 61.50 100.00 0.00
Total Weight (g) =1051
Geotechnics Laboratory
University of Wisconsin-Madison
Mechanical Particle Size Analysis - ASTM D 422
W4-A
www.uwgeoengineering.org
Sample ID:Temp. Correction, A 0.0131
Specific Gravity, Gs = 2.6 Hydrometer Type:ASTM 152H
Dry Weight of Soil, W (g) =50 Temperature of Test, C 23
Meniscus Correction, Fm =0.5 Zero Correction, Fz 6
Temperature Correction, FT =0.9 a 1.012
40
98.73
Time Hydrometer Rcp Rcl L D Final Percent Percent
(min)Reading, R (cm)(mm)Finer (%)Finer
0.0 0 0.425 98.73
0.3 35 29.90 44.90 10.56 0.0849 59.75 60.52
0.5 29 23.90 38.90 11.54 0.0628 47.76 48.38
1.0 23 17.90 32.90 12.52 0.0462 35.77 36.23
2.0 19 13.90 28.90 13.18 0.0335 27.78 28.14
4.0 17.5 12.40 27.40 13.42 0.0239 24.78 25.10
8.0 17 11.90 26.90 13.50 0.0170 23.78 24.09
15.0 16.5 11.40 26.40 13.58 0.0124 22.78 23.08
35.0 16 10.90 25.90 13.67 0.0082 21.78 22.06
60.0 16 10.90 25.90 13.67 0.0062 21.78 22.06
120.0 15 9.90 24.90 13.83 0.0044 19.78 20.04
240.0 14.5 9.40 24.40 13.91 0.0031 18.79 19.03
406.0 14 8.90 23.90 13.99 0.0024 17.79 18.02
1455.0 14 8.90 23.90 13.99 0.0013 17.79 18.02
2857.0 14 8.90 23.90 13.99 0.0009 17.79 18.02
Formulas:
FT = -4.85 + 0.25 T a = f(Gs) = 1.65 Gs / (2.65 (Gs - 1))
Rcp = R + FT - FZ Rcl = R + Fm
L = f(R) = 16.3 - 0.1641 Rcl
η = 0.0911 x 10-4 (g-s/cm2) (if T = 25 oC)
Geotechnics Laboratory
University of Wisconsin-Madison
Sedimentation Particle Size Analysis - ASTM D 422
W4-A
Material Max. Size and
Percentage (%)
www.uwgeoengineering.org
()()()mint
cmLAmmD=()()ωγ−
η==1G
30T,GfA
s
s
10050
aRFinerPercentcp=
0
10
20
30
40
50
60
70
80
90
100
0.00010.0010.010.1110100
Pe
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F
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%
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Particle Size (mm)
W2-B
Mechanical
Sedimentation
Sample ID:Test Date:
Weight of Air Dry Sample =1584 g Initials:
Sieve No.Sieve Opening Weight Retained on
Each Sieve
Percent Retained on
Each Sieve
Cumulative Percent
Retained Percent Finer
(mm)(g)(%)(%)(%)
2"50.800 0.00 0 0 100
1"25.400 222.48 14.04 14.04 85.96
3/4"19.000 65.42 4.13 18.17 81.83
1/2"12.700 126.64 7.99 26.16 73.84
3/8"9.520 86.57 5.46 31.63 68.37
4 4.750 142.35 8.98 40.61 59.39
10 2.000 148.20 9.35 49.96 50.04
20 0.850 83.29 5.26 55.22 44.78
40 0.425 50.76 3.20 58.42 41.58
60 0.250 122.19 7.71 66.14 33.86
100 0.106 193.49 12.21 78.35 21.65
200 0.075 122.12 7.71 86.06 13.94
Pan 220.95 13.94 100.00 0.00
Total Weight (g) =1584
Geotechnics Laboratory
University of Wisconsin-Madison
Mechanical Particle Size Analysis - ASTM D 422
W2-B
www.uwgeoengineering.org
Sample ID:Temp. Correction, A 0.0129
Specific Gravity, Gs = 2.63 Hydrometer Type:ASTM 152H
Dry Weight of Soil, W (g) =50 Temperature of Test, C 23
Meniscus Correction, Fm =0.5 Zero Correction, Fz 6
Temperature Correction, FT =0.9 a 1.005
40
41.58
Time Hydrometer Rcp Rcl L D Final Percent Percent
(min)Reading, R (cm)(mm)Finer (%)Finer
0.0 0 0.425 41.58
0.2 27 21.90 36.40 11.87 0.0892 18.30 44.01
0.5 20 14.90 29.40 13.01 0.0661 12.45 29.94
1.0 19 13.90 28.40 13.18 0.0470 11.61 27.93
2.0 18 12.90 27.40 13.34 0.0334 10.78 25.92
4.0 17 11.90 26.40 13.50 0.0238 9.94 23.91
8.0 16.5 11.40 25.90 13.58 0.0169 9.53 22.91
15.0 16 10.90 25.40 13.67 0.0124 9.11 21.91
30.0 15.5 10.40 24.90 13.75 0.0088 8.69 20.90
60.0 15 9.90 24.40 13.83 0.0062 8.27 19.90
120.0 14.5 9.40 23.90 13.91 0.0044 7.85 18.89
240.0 14 8.90 23.40 13.99 0.0031 7.44 17.89
396.0 13.5 8.40 22.90 14.08 0.0024 7.02 16.88
1446.0 13 7.90 22.40 14.16 0.0013 6.60 15.88
2848.0 12 6.90 21.40 14.32 0.0009 5.77 13.87
0.0 0 -5.10 9.40 16.28 #DIV/0!-4.26 -10.25
0.0 0 -5.10 9.40 16.28 #DIV/0!-4.26 -10.25
Formulas:
FT = -4.85 + 0.25 T a = f(Gs) = 1.65 Gs / (2.65 (Gs - 1))
Rcp = R + FT - FZ Rcl = R + Fm
L = f(R) = 16.3 - 0.1641 Rcl
η = 0.0911 x 10-4 (g-s/cm2) (if T = 25 oC)
Geotechnics Laboratory
University of Wisconsin-Madison
Sedimentation Particle Size Analysis - ASTM D 422
W2-B
Material Max. Size and
Percentage (%)
www.uwgeoengineering.org
()()()mint
cmLAmmD=()()ωγ−
η==1G
30T,GfA
s
s
10050
aRFinerPercentcp=
0
10
20
30
40
50
60
70
80
90
100
0.00010.0010.010.1110100
Pe
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%
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Particle Size (mm)
W5-A
Mechanical
Sedimentation
Sample ID:Test Date:
Weight of Air Dry Sample =1100 g Initials:
Sieve No.Sieve Opening Weight Retained
on Each Sieve
Percent Retained
on Each Sieve
Cumulative Percent
Retained Percent Finer
(mm)(g)(%)(%)(%)
2"50.800 0.00 0 0 100
1"25.400 0.00 0.00 0.00 100.00
3/4"19.000 0.00 0.00 0.00 100.00
1/2"12.700 0.00 0.00 0.00 100.00
3/8"9.520 4.00 0.36 0.36 99.64
4 4.750 6.16 0.56 0.92 99.08
10 2.000 22.81 2.07 3.00 97.00
20 0.850 21.74 1.98 4.97 95.03
40 0.425 21.89 1.99 6.96 93.04
60 0.250 52.45 4.77 11.73 88.27
100 0.106 54.44 4.95 16.68 83.32
200 0.075 362.25 32.94 49.62 50.38
Pan 554.15 50.38 100.00 0.00
Total Weight (g) =1100
Geotechnics Laboratory
University of Wisconsin-Madison
Mechanical Particle Size Analysis - ASTM D 422
W5-A
www.uwgeoengineering.org
Sample ID:Temp. Correction, A 0.0130
Specific Gravity, Gs = 2.61 Hydrometer Type:ASTM 152H
Dry Weight of Soil, W (g) =50 Temperature of Test, C 23
Meniscus Correction, Fm =0.5 Zero Correction, Fz 6
Temperature Correction, FT =0.9 a 1.010
40
93.04
Time Hydrometer Rcp Rcl L D Final Percent Percent
(min)Reading, R (cm)(mm)Finer (%)Finer
0.0 0 0.425 93.04
0.3 33 27.90 43.90 10.89 0.0860 52.42 56.34
0.5 27 21.90 37.90 11.87 0.0635 41.14 44.22
1.0 22 16.90 32.90 12.69 0.0464 31.75 34.13
2.0 19 13.90 29.90 13.18 0.0334 26.11 28.07
4.0 18 12.90 28.90 13.34 0.0238 24.24 26.05
8.0 17.5 12.40 28.40 13.42 0.0169 23.30 25.04
15.0 17 11.90 27.90 13.50 0.0124 22.36 24.03
30.0 16.5 11.40 27.40 13.58 0.0088 21.42 23.02
60.0 16.5 11.40 27.40 13.58 0.0062 21.42 23.02
120.0 16 10.90 26.90 13.67 0.0044 20.48 22.01
242.0 15.5 10.40 26.40 13.75 0.0031 19.54 21.00
380.0 15 9.90 25.90 13.83 0.0025 18.60 19.99
1430.0 15 9.90 25.90 13.83 0.0013 18.60 19.99
2832.0 15 9.90 25.90 13.83 0.0009 18.60 19.99
0.0 0 -5.10 10.90 16.28 #DIV/0!-9.58 -10.30
0.0 0 -5.10 10.90 16.28 #DIV/0!-9.58 -10.30
Formulas:
FT = -4.85 + 0.25 T a = f(Gs) = 1.65 Gs / (2.65 (Gs - 1))
Rcp = R + FT - FZ Rcl = R + Fm
L = f(R) = 16.3 - 0.1641 Rcl
η = 0.0911 x 10-4 (g-s/cm2) (if T = 25 oC)
Geotechnics Laboratory
University of Wisconsin-Madison
Sedimentation Particle Size Analysis - ASTM D 422
W5-A
Material Max. Size and
Percentage (%)
www.uwgeoengineering.org
()()()mint
cmLAmmD=()()ωγ−
η==1G
30T,GfA
s
s
10050
aRFinerPercentcp=
0
10
20
30
40
50
60
70
80
90
100
0.00010.0010.010.1110100
Pe
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%
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Particle Size (mm)
W5-B
Mechanical
Sedimentation
Sample ID:Test Date:
Weight of Air Dry Sample =1512 g Initials:
Sieve No.Sieve Opening Weight Retained on
Each Sieve
Percent Retained
on Each Sieve
Cumulative Percent
Retained Percent Finer
(mm)(g)(%)(%)(%)
2"50.8000 0.00 0 0 100
1"25.4000 269.02 17.79 17.79 82.21
3/4"19.0000 10.19 0.67 18.47 81.53
1/2"12.7000 59.39 3.93 22.39 77.61
3/8"9.5200 38.95 2.58 24.97 75.03
4 4.7500 61.39 4.06 29.03 70.97
10 2.0000 61.84 4.09 33.12 66.88
20 0.8500 42.92 2.84 35.96 64.04
40 0.4250 71.73 4.74 40.70 59.30
60 0.2500 204.64 13.53 54.24 45.76
100 0.1060 115.96 7.67 61.91 38.09
200 0.0750 171.25 11.33 73.23 26.77
Pan 404.71 26.77 100.00 0.00
Total Weight (g) =1512
Geotechnics Laboratory
University of Wisconsin-Madison
Mechanical Particle Size Analysis - ASTM D 422
W5-B
www.uwgeoengineering.org
Sample ID:Temp. Correction, A 0.0129
Specific Gravity, Gs = 2.63 Hydrometer Type:ASTM 152H
Dry Weight of Soil, W (g) =50 Temperature of Test, C 23
Meniscus Correction, Fm =0.5 Zero Correction, Fz 6
Temperature Correction, FT =0.9 a 1.005
40
59.30
Time Hydrometer Rcp Rcl L D Final Percent Percent
(min)Reading, R (cm)(mm)Finer (%)Finer
0.0 0 0.425 59.30
0.2 31 25.90 40.90 11.21 0.0867 30.86 52.05
0.5 25 19.90 34.90 12.19 0.0639 23.71 39.99
1.0 21 15.90 30.90 12.85 0.0464 18.95 31.95
2.0 19 13.90 28.90 13.18 0.0332 16.56 27.93
4.0 18 12.90 27.90 13.34 0.0236 15.37 25.92
8.0 17 11.90 26.90 13.50 0.0168 14.18 23.91
15.0 16.5 11.40 26.40 13.58 0.0123 13.58 22.91
30.0 16 10.90 25.90 13.67 0.0087 12.99 21.91
60.0 15.5 10.40 25.40 13.75 0.0062 12.39 20.90
120.0 15 9.90 24.90 13.83 0.0044 11.80 19.90
240.0 14 8.90 23.90 13.99 0.0031 10.61 17.89
429.0 13 7.90 22.90 14.16 0.0024 9.41 15.88
1209.0 12 6.90 21.90 14.32 0.0014 8.22 13.87
2128.0 12 6.90 21.90 14.32 0.0011 8.22 13.87
4683.0 11 5.90 20.90 14.48 0.0007 7.03 11.86
0.0 0 -5.10 9.90 16.28 #DIV/0!-6.08 -10.25
Formulas:
FT = -4.85 + 0.25 T a = f(Gs) = 1.65 Gs / (2.65 (Gs - 1))
Rcp = R + FT - FZ Rcl = R + Fm
L = f(R) = 16.3 - 0.1641 Rcl
η = 0.0911 x 10-4 (g-s/cm2) (if T = 25 oC)
Geotechnics Laboratory
University of Wisconsin-Madison
Sedimentation Particle Size Analysis - ASTM D 422
W5-B
Material Max. Size and
Percentage (%)
www.uwgeoengineering.org
()()()mint
cmLAmmD=()()ωγ−
η==1G
30T,GfA
s
s
10050
aRFinerPercentcp=
0
10
20
30
40
50
60
70
80
90
100
0.00010.0010.010.1110100
Pe
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F
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%
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Particle Size (mm)
W8-A
Mechanical
Sedimentation
Sample ID:Test Date:
Weight of Air Dry Sample =1354 g Initials:
Sieve No.Sieve Opening Weight Retained
on Each Sieve
Percent Retained
on Each Sieve
Cumulative Percent
Retained Percent Finer
(mm)(g)(%)(%)(%)
2"50.800 0.00 0 0 100
1"25.400 200.78 14.83 14.83 85.17
3/4"19.000 72.08 5.32 20.15 79.85
1/2"12.700 68.48 5.06 25.20 74.80
3/8"9.520 49.77 3.67 28.88 71.12
4 4.750 78.25 5.78 34.66 65.34
10 2.000 79.27 5.85 40.51 59.49
20 0.850 52.87 3.90 44.41 55.59
40 0.425 89.60 6.62 51.03 48.97
60 0.250 203.74 15.04 66.07 33.93
100 0.106 186.92 13.80 79.88 20.12
200 0.075 85.98 6.35 86.22 13.78
Pan 186.57 13.78 100.00 0.00
Total Weight (g) =1354
Geotechnics Laboratory
University of Wisconsin-Madison
Mechanical Particle Size Analysis - ASTM D 422
W8-A
www.uwgeoengineering.org
Sample ID:Temp. Correction, A 0.0129
Specific Gravity, Gs = 2.64 Hydrometer Type:ASTM 152H
Dry Weight of Soil, W (g) =50 Temperature of Test, C 23
Meniscus Correction, Fm =0.5 Zero Correction, Fz 6
Temperature Correction, FT =0.9 a 1.002
40
48.97
Time Hydrometer Rcp Rcl L D Final Percent Percent
(min)Reading, R (cm)(mm)Finer (%)Finer
0.0 0 0.425 48.97
0.3 20 14.90 26.90 13.01 0.0931 14.63 29.87
0.5 18 12.90 24.90 13.34 0.0667 12.67 25.86
1.0 16 10.90 22.90 13.67 0.0477 10.70 21.85
2.0 15 9.90 21.90 13.83 0.0339 9.72 19.85
4.0 14 8.90 20.90 13.99 0.0241 8.74 17.84
8.0 14 8.90 20.90 13.99 0.0171 8.74 17.84
15.0 13.5 8.40 20.40 14.08 0.0125 8.25 16.84
30.0 13.5 8.40 20.40 14.08 0.0088 8.25 16.84
61.0 13 7.90 19.90 14.16 0.0062 7.76 15.84
120.0 12 6.90 18.90 14.32 0.0045 6.77 13.83
230.0 12 6.90 18.90 14.32 0.0032 6.77 13.83
419.0 11 5.90 17.90 14.48 0.0024 5.79 11.83
1200.0 11 5.90 17.90 14.48 0.0014 5.79 11.83
2118.0 10 4.90 16.90 14.65 0.0011 4.81 9.82
4673.0 9.5 4.40 16.40 14.73 0.0007 4.32 8.82
-59096737.0 0 -5.10 6.90 16.28 #NUM!-5.01 -10.22
Formulas:
FT = -4.85 + 0.25 T a = f(Gs) = 1.65 Gs / (2.65 (Gs - 1))
Rcp = R + FT - FZ Rcl = R + Fm
L = f(R) = 16.3 - 0.1641 Rcl
η = 0.0911 x 10-4 (g-s/cm2) (if T = 25 oC)
Geotechnics Laboratory
University of Wisconsin-Madison
Sedimentation Particle Size Analysis - ASTM D 422
W8-A
Material Max. Size and
Percentage (%)
www.uwgeoengineering.org
()()()mint
cmLAmmD=()()ωγ−
η==1G
30T,GfA
s
s
10050
aRFinerPercentcp=
0
10
20
30
40
50
60
70
80
90
100
0.00010.0010.010.1110100
Pe
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t

F
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(
%
)

Particle Size (mm)
W8-B
Mechanical
Sedimentation
Sample ID:Test Date:
Weight of Air Dry Sample =1016 g Initials:
Sieve No.Sieve Opening Weight Retained
on Each Sieve
Percent Retained
on Each Sieve
Cumulative
Percent Retained Percent Finer
(mm)(g)(%)(%)(%)
2"50.8 0.00 0 0 100
1"25.4 249.88 24.59 24.59 75.41
3/4"19.0 0.00 0.00 24.59 75.41
1/2"12.7 48.98 4.82 29.41 70.59
3/8"9.52 7.89 0.78 30.19 69.81
4 4.75 14.19 1.40 31.59 68.41
10 2.00 24.17 2.38 33.96 66.04
20 0.85 23.12 2.28 36.24 63.76
40 0.425 52.87 5.20 41.44 58.56
60 0.250 114.81 11.30 52.74 47.26
100 0.106 74.36 7.32 60.06 39.94
200 0.075 119.61 11.77 71.83 28.17
Pan 286.23 28.17 100.00 0.00
Total Weight (g) =1016
Geotechnics Laboratory
University of Wisconsin-Madison
Mechanical Particle Size Analysis - ASTM D 422
W8-B
www.uwgeoengineering.org
Sample ID:Temp. Correction, A 0.0128
Specific Gravity, Gs = 2.66 Hydrometer Type:ASTM 152H
Dry Weight of Soil, W (g) =50 Temperature of Test, C 23
Meniscus Correction, Fm =0.5 Zero Correction, Fz 6
Temperature Correction, FT =0.9 a 0.998
40
58.56
Time Hydrometer Rcp Rcl L D Final Percent Percent
(min)Reading, R (cm)(mm)Finer (%)Finer
0.0 0 0.425 58.56
0.2 30 24.90 39.90 11.38 0.0866 29.10 49.69
0.5 25 19.90 34.90 12.19 0.0634 23.25 39.71
1.0 21 15.90 30.90 12.85 0.0460 18.58 31.73
2.0 19 13.90 28.90 13.18 0.0329 16.24 27.74
4.0 17 11.90 26.90 13.50 0.0236 13.91 23.75
8.0 16.5 11.40 26.40 13.58 0.0167 13.32 22.75
15.0 16 10.90 25.90 13.67 0.0122 12.74 21.75
30.0 16 10.90 25.90 13.67 0.0087 12.74 21.75
60.0 15 9.90 24.90 13.83 0.0062 11.57 19.76
120.0 15 9.90 24.90 13.83 0.0044 11.57 19.76
220.0 14 8.90 23.90 13.99 0.0032 10.40 17.76
408.0 13.5 8.40 23.40 14.08 0.0024 9.82 16.76
1189.0 13.5 8.40 23.40 14.08 0.0014 9.82 16.76
2107.0 12.5 7.40 22.40 14.24 0.0011 8.65 14.77
4662.0 11.5 6.40 21.40 14.40 0.0007 7.48 12.77
-59096748.0 0 -5.10 9.90 16.28 #NUM!-5.96 -10.18
Formulas:
FT = -4.85 + 0.25 T a = f(Gs) = 1.65 Gs / (2.65 (Gs - 1))
Rcp = R + FT - FZ Rcl = R + Fm
L = f(R) = 16.3 - 0.1641 Rcl
η = 0.0911 x 10-4 (g-s/cm2) (if T = 25 oC)
Geotechnics Laboratory
University of Wisconsin-Madison
Sedimentation Particle Size Analysis - ASTM D 422
W8-B
Material Max. Size and
Percentage (%)
www.uwgeoengineering.org
()()()mint
cmLAmmD=()()ωγ−
η==1G
30T,GfA
s
s
10050
aRFinerPercentcp=
0
10
20
30
40
50
60
70
80
90
100
0.00010.0010.010.1110100
Pe
r
c
e
n
t

F
i
n
e
r

(
%
)

Particle Size (mm)
W9-B
Mechanical
Sedimentation
Sample ID:Test Date:
Weight of Air Dry Sample =1027 g Initials:
Sieve No.Sieve Opening Weight Retained on
Each Sieve
Percent Retained
on Each Sieve
Cumulative Percent
Retained Percent Finer
(mm)(g)(%)(%)(%)
2"50.8 0.00 0 0 100
1"25.4 0.00 0.00 0.00 100
3/4"19.0 11.91 1.16 1.16 98.84
1/2"12.7 0.00 0.00 1.16 98.84
3/8"9.52 12.33 1.20 2.36 97.64
4 4.75 36.00 3.51 5.87 94.13
10 2.00 46.08 4.49 10.35 89.65
20 0.85 33.14 3.23 13.58 86.42
40 0.425 23.26 2.26 15.84 84.16
60 0.250 36.69 3.57 19.42 80.58
100 0.106 51.93 5.06 24.47 75.53
200 0.075 261.16 25.43 49.90 50.10
Pan 514.52 50.10 100.00 0.00
Total Weight (g) =1027
Wisconsin Geotechnics Laboratory
Mechanical Particle Size Analysis - ASTM D 422
W9-B
Sample ID:Temp. Correction, A 0.0129
Specific Gravity, Gs = 2.63 Hydrometer Type:ASTM 152H
Dry Weight of Soil, W (g) =50 Temperature of Test, C 23
Meniscus Correction, Fm =0.5 Zero Correction, Fz 6
Temperature Correction, FT =0.9 a 1.005
40
84.16
Time Hydrometer Rcp Rcl L D Final Percent Percent
(min)Reading, R (cm)(mm)Finer (%)Finer
0.0 0 0.425 84.16
0.2 40 34.90 50.90 9.74 0.0808 59.02 70.14
0.5 31 25.90 41.90 11.21 0.0613 43.80 52.05
1.0 25 19.90 35.90 12.19 0.0452 33.66 39.99
2.0 21 15.90 31.90 12.85 0.0328 26.89 31.95
4.0 19 13.90 29.90 13.18 0.0235 23.51 27.93
8.0 18.5 13.40 29.40 13.26 0.0167 22.66 26.93
15.0 18 12.90 28.90 13.34 0.0122 21.82 25.92
30.0 18 12.90 28.90 13.34 0.0086 21.82 25.92
64.0 17 11.90 27.90 13.50 0.0059 20.13 23.91
126.0 16 10.90 26.90 13.67 0.0043 18.43 21.91
201.0 16 10.90 26.90 13.67 0.0034 18.43 21.91
388.0 15.5 10.40 26.40 13.75 0.0024 17.59 20.90
1169.0 15.5 10.40 26.40 13.75 0.0014 17.59 20.90
2088.0 14 8.90 24.90 13.99 0.0011 15.05 17.89
4642.0 13 7.90 23.90 14.16 0.0007 13.36 15.88
-59096768.0 0 -5.10 10.90 16.28 #NUM!-8.63 -10.25
Formulas:
FT = -4.85 + 0.25 T a = f(Gs) = 1.65 Gs / (2.65 (Gs - 1))
Rcp = R + FT - FZ Rcl = R + Fm
L = f(R) = 16.3 - 0.1641 Rcl
η = 0.0911 x 10-4 (g-s/cm2) (if T = 25 oC)
Wisconsin Geotechnics Laboratory
Sedimentation Particle Size Analysis - ASTM D 422
W9-B
Material Max. Size and
Percentage (%)
()()()mint
cmLAmmD=()()ωγ−
η==1G
30T,GfA
s
s
10050
aRFinerPercentcp=

COMPACTION AND HYDRAULIC PROPERTIES OF SOILS FROM
BLANDING, UTAH

by

C.H. Benson and X. Wang

Geotechnics Report No. 12-41

Wisconsin Geotechnics Laboratory

University of Wisconsin-Madison
Madison, Wisconsin 53706
USA

24 July 2012

1
1. SCOPE

This report describes results of laboratory tests to determine the compaction and hydraulic
properties of soil samples from Blanding, Utah. The soils were delivered to the Wisconsin
Geotechnics Laboratory as disturbed samples in 20-L buckets (2 buckets per soil). Index
properties of the soils were determined previously and are reported in Geotechnics Report No.
12-37.

2. METHODS

The same soil samples used for index properties testing were used for the tests conducted in
this study. Tests were conducted to determine standard Proctor compaction curves, saturated
hydraulic conductivity, soil water characteristic curves (SWCCs), and 1.5 MPa moisture content.
The following ASTM methods were employed:

D 698 Standard Test Methods for Laboratory Compaction Characteristics of Soil Using
Standard Effort (12 400 ft-lbf/ft (600 kN-m/m))

D 5084 Standard Test Methods for Measurement of Hydraulic Conductivity of Saturated
Porous Materials Using a Flexible Wall Permeameter

D 6836 Standard Test Methods for Determination of the Soil Water Characteristic Curve for
Desorption Using Hanging Column, Pressure Extractor, Chilled Mirror Hygrometer, or
Centrifuge

Test specimens for the saturated hydraulic conductivity, SWCC, and 1.5 MPa moisture content
tests were prepared at 85% of maximum dry unit weight and optimum water content per
standard Proctor, as specified by the requestor.

Saturated hydraulic conductivity of each test specimen was measured in a flexible-wall
permeameter following the methods in ASTM D 5084. The backpressure was set at 30 psi and
the hydraulic gradient was 10. The effective stress was set at 5.0 psi to simulate the low state
of stress in a cover while ensuring good contact between the membrane and the test specimen.

The wet end of the SWCC was measured following the procedures in ASTM D 6836 using a
hanging column (Method A) or a pressure plate extractor (Method B). A chilled mirror
hygrometer (Method D) was used to complete the dry end of the SWCC after the hanging
column test or pressure plate test was complete. SWCCs were prepared by combining data
from the pressure plate and chilled mirror hygrometer tests as described in D 6836. van
Genuchten’s equation was fit to the SWCC data:

θ−θr
θs −θr
=1
1+(αψ)n
⎡
⎣⎢⎤
⎦⎥
m
(1)

2

where θ is volumetric water content, θr is residual water content, θs is saturated volumetric water
content, ψ is matric suction, and α, m, and n are fitting parameters. Equation 1 was fit to the
data using a non-linear least-squares optimization procedure with the constraint m = 1-n-1.

Moisture contents at 1.5 MPa were determined using the procedures in Method D of ASTM D
6836. Test specimens were prepared at three moisture contents bracketing a suction of 1.5
MPa. Moisture content was then regressed on suction, and the moisture content at 1.5 MPa
was determined from the regression equation.

3. RESULTS

Optimum water contents and maximum dry unit weights from the compaction tests are
summarized in Table 1. Saturated hydraulic conductivities and van Genuchten parameters for
the SWCCs are summarized in Table 2. Gravimetric moisture contents at 1.5 MPa are
summarized in Table 3. Data recorded from the tests are in the appendix.

3

Table 1. Summary of index properties for soils from Blanding, Utah.
Sample ID Optimum Water
Content (%)
Maximum Dry Unit
Weight (pcf)
E1-A1/2 Composite 11.0 118
E3-A1/2 Composite 19.0 105
E8-B1/2 Composite 10.5 125
W2-B1/2 Composite 8.5 128
W5-B1/2 Composite 10.0 122
W8-A1/2 Composite 13.0 117
W9-B1/2 Composite 14.0 115

Table 2. Summary of saturated hydraulic conductivities and van Genuchten Parameters
Sample ID
Sat. Hydraulic
Conductivity
(cm/s)
Saturated Vol.
Water Content
(s)
Residual Vol.
Water Content
(r)

(1/kPa) n
E1-A1/2
Composite 1.3x10-4 0.38 0.024 0.0797 1.35
E3-A1/2
Composite 9.5x10-5 0.44 0.00 0.0787 1.19
W2-B1/2
Composite 1.5x10-3 0.32 0.00 0.2160 1.32
W5-B1/2
Composite 1.1x10-3 0.36 0.00 0.1180 1.35
W8-A1/2
Composite 1.2x10-3 0.37 0.00 0.1840 1.35
W9-B1/2
Composite 4.1x10-4 0.40 0.00 0.0729 1.26

Table 3. Summary of 1.5 MPa gravimetric moisture contents.
Sample ID Gravimetric Water Content (%)
E8-B1/2 Composite 6.0
W2-A1/2 Composite 6.9
W5-A1/2 Composite 7.0
W8-B1/2 Composite 6.4

4

APPENDIX:

DATA SHEETS

Sample I.D.E1_(A1/A2)Test Date
Procedure A Volume of Mold (ft3)0.033
Weight of Hammer (lb)5.5 Hammer Drop (in)12
No. of Blows per Layer 25 No. of Layers 3
WT of Mold
WT of Mold +
Wet Soil
WT of Wet
Soil
Wet Unit
Weight
Water
Content
Dry Unit
Weight
(lb)(lb)(lb)(pcf)(%)(pcf)
9.48 13.05 3.57 107.13 3.6 103.38
9.48 13.45 3.97 119.09 7.6 110.65
9.48 13.86 4.38 131.44 11.0 118.40
9.48 13.81 4.33 129.94 13.6 114.37
9.48 13.47 3.99 119.56 19.7 99.87
#1 #2 #3 #4 #5
T2 M7 14 T4 B3
30.8 24.4 30.7 24.6 25.3
201.8 135.8 153.7 173.2 175.9
195.8 127.9 141.5 155.4 151.1
3.6 7.6 11.0 13.6 19.7
WT of Can + Dry Soil (g)
Water Content (%)
6/8/2012
Test No.
1
2
3
STANDARD PROCTOR COMPACTION TEST
(ASTM D 698)
WT of Can + Wet Soil (g)
Wisconsin Geotechnics Laboratory
4
5
Test No
Can No.
WT of Can (g)
Sample I.D.E3_(A1/A2)Test Date
Procedure A Volume of Mold (ft3)0.033
Weight of Hammer (lb)5.5 Hammer Drop (in)12
No. of Blows per Layer 25 No. of Layers 3
WT of Mold WT of Mold +
Wet Soil
WT of Wet
Soil
Wet Unit
Weight
Water
Content
Dry Unit
Weight
(lb)(lb)(lb)(pcf)(%)(pcf)
9.48 13.27 3.79 113.56 14.2 99.45
9.48 13.59 4.11 123.19 17.8 104.56
9.48 13.67 4.19 125.74 21.2 103.76
9.48 13.56 4.08 122.43 23.7 98.95
9.48 13.44 3.96 118.87 26.9 93.64
#1 #2 #3 #4 #5
SL 7 W3 62 A3
31.8 24.7 24.6 31.2 25.1
172.6 147 143 163.1 162.2
155.1 128.5 122.3 137.8 133.1
14.2 17.8 21.2 23.7 26.9
WT of Can (g)
WT of Can + Wet Soil (g)
WT of Can + Dry Soil (g)
Water Content (%)
2
3
4
5
Test No
Can No.
Wisconsin Geotechnics Laboratory
STANDARD PROCTOR COMPACTION TEST
(ASTM D 698)
6/8/2012
Test No.
1
Sample I.D.E8_(B1/B2)Test Date
Procedure C Volume of Mold (ft3)0.075
Weight of Hammer (lb)5.5 Hammer Drop (in)12
No. of Blows per Layer 56 No. of Layers 3
WT of Mold WT of Mold +
Wet Soil
WT of Wet
Soil
Wet Unit
Weight
Water
Content
Dry Unit
Weight
(lb)(lb)(lb)(pcf)(%)(pcf)
14.20 24.23 10.03 133.67 8.7 122.98
14.20 24.54 10.34 137.93 10.5 124.82
14.20 24.44 10.24 136.59 12.2 121.75
14.20 24.25 10.05 134.03 13.8 117.81
0.00 0.00 #DIV/0!#DIV/0!
#1 #2 #3 #4 #5
J4 EA TR3L 2 - 4
24.9 31.2 24.6 30.9
176.2 160.6 166.3 159.8
164.1 148.3 150.9 144.2
8.7 10.5 12.2 13.8 #DIV/0!
WT of Can (g)
WT of Can + Wet Soil (g)
WT of Can + Dry Soil (g)
Water Content (%)
2
3
4
5
Test No
Can No.
Wisconsin Geotechnics Laboratory
STANDARD PROCTOR COMPACTION TEST
(ASTM D 698)
6/10/2012
Test No.
1
Sample I.D.W2_(B1/B2)Test Date
Procedure C Volume of Mold (ft3)0.075
Weight of Hammer (lb)5.5 Hammer Drop (in)12
No. of Blows per Layer 56 No. of Layers 3
WT of Mold
WT of Mold +
Wet Soil
WT of Wet
Soil
Wet Unit
Weight
Water
Content
Dry Unit
Weight
(lb)(lb)(lb)(pcf)(%)(pcf)
14.20 23.93 9.73 129.71 6.0 122.41
14.20 24.54 10.34 137.82 8.1 127.48
14.20 24.60 10.40 138.69 9.3 126.88
14.20 24.42 10.22 136.28 11.0 122.73
0 0 #DIV/0!#DIV/0!
#1 #2 #3 #4 #5
T4 28 14 3
24.5 24.5 30.6 31.1
189.8 175.1 212.6 216.2
180.5 163.8 197.1 197.8
6.0 8.1 9.3 11.0 #DIV/0!
WT of Can (g)
WT of Can + Wet Soil (g)
WT of Can + Dry Soil (g)
Water Content (%)
2
3
4
5
Test No
Can No.
Wisconsin Geotechnics Laboratory
STANDARD PROCTOR COMPACTION TEST
(ASTM D 698)
6/10/2012
Test No.
1
Sample I.D.W5_(B1/B2)Test Date
Procedure C Volume of Mold (ft3)0.075
Weight of Hammer (lb)5.5 Hammer Drop (in)12
No. of Blows per Layer 56 No. of Layers 3
WT of Mold
WT of Mold +
Wet Soil
WT of Wet
Soil
Wet Unit
Weight
Water
Content
Dry Unit
Weight
(lb)(lb)(lb)(pcf)(%)(pcf)
14.20 23.26 9.06 120.85 5.5 114.51
14.20 23.60 9.40 125.28 6.9 117.22
14.20 24.27 10.07 134.21 10.1 121.91
14.20 24.28 10.08 134.39 11.9 120.14
14.20 24.02 9.82 130.90 15.1 113.70
#1 #2 #3 #4 #5
21 Y1 5 W3 29
31.1 30.9 24.3 24.7 30.7
196.9 208.1 164 171.8 184.4
188.2 196.7 151.2 156.2 164.2
5.5 6.9 10.1 11.9 15.1
WT of Can (g)
WT of Can + Wet Soil (g)
WT of Can + Dry Soil (g)
Water Content (%)
2
3
4
5
Test No
Can No.
Wisconsin Geotechnics Laboratory
STANDARD PROCTOR COMPACTION TEST
(ASTM D 698)
6/10/2012
Test No.
1
Sample I.D.W8_(A1/A2)Test Date
Procedure C Volume of Mold (ft3)0.075
Weight of Hammer (lb)5.5 Hammer Drop (in)12
No. of Blows per Layer 56 No. of Layers 3
WT of Mold
WT of Mold +
Wet Soil
WT of Wet
Soil
Wet Unit
Weight
Water
Content
Dry Unit
Weight
(lb)(lb)(lb)(pcf)(%)(pcf)
14.20 22.99 8.79 117.16 6.7 109.79
14.20 23.55 9.35 124.72 9.5 113.90
14.20 23.95 9.75 130.00 11.3 116.81
14.20 24.13 9.93 132.43 14.4 115.80
14.20 23.74 9.54 127.15 16.7 108.97
#1 #2 #3 #4 #5
W81 B 29 2-4 J4
24.7 30.9 30.7 30.9 24.9
185.3 175 174.6 179.8 186.5
175.2 162.5 160 161.1 163.4
6.7 9.5 11.3 14.4 16.7
WT of Can (g)
WT of Can + Wet Soil (g)
WT of Can + Dry Soil (g)
Water Content (%)
2
3
4
5
Test No
Can No.
Wisconsin Geotechnics Laboratory
STANDARD PROCTOR COMPACTION TEST
(ASTM D 698)
6/9/2012
Test No.
1
Sample I.D.W9_(B1/B2)Test Date
Procedure A Volume of Mold (ft3)0.033
Weight of Hammer (lb)5.5 Hammer Drop (in)12
No. of Blows per Layer 25 No. of Layers 3
WT of Mold
WT of Mold +
Wet Soil
WT of Wet
Soil
Wet Unit
Weight
Water
Content
Dry Unit
Weight
(lb)(lb)(lb)(pcf)(%)(pcf)
9.47 13.00 3.53 105.85 4.5 101.25
9.47 13.27 3.80 113.92 7.6 105.89
9.47 13.62 4.15 124.64 10.8 112.49
9.47 13.81 4.34 130.28 14.6 113.65
9.47 13.59 4.12 123.72 18.1 104.76
#1 #2 #3 #4 #5
B26 SL 7 X2 R17-3
30.8 31.8 24.7 30.8 30.8
201.1 187.8 161.1 185.1 169.1
193.7 176.8 147.8 165.4 147.9
4.5 7.6 10.8 14.6 18.1
WT of Can (g)
WT of Can + Wet Soil (g)
WT of Can + Dry Soil (g)
Water Content (%)
2
3
4
5
Test No
Can No.
Wisconsin Geotechnics Laboratory
STANDARD PROCTOR COMPACTION TEST
(ASTM D 698)
6/10/2012
Test No.
1
80.00
90.00
100.00
110.00
120.00
130.00
140.00
0.0 5.0 10.0 15.0 20.0 25.0 30.0
Dr
y

U
n
i
t

W
e
i
g
h
t

(
p
c
f
)

Water Contentn(%)
E1
E3
E8
W2
W5
W8
W9
Test Date :
Cell Pressure =35.8 psi Diameter of Sample, D = 15.2 cm
Inflow Pressure = 31.6 psi Length of Sample, L = 11.6 cm
Outflow Pressre =30.0 psi Area of Sample, A = 182.41 cm2
Pressure Difference =1.6 psi Sample Volume, V =2123.9 cm3
Effective Stress = 5.0 psi ain = 5 cm2
Hydraulic Gradient, i =10 aout = 5 cm2
Weight of wet sample =3787.6 (g)Sample Water Content =11.0 (%)
Wet Density =1.8 g/cm3 Dry Density =1.61 g/cm3
Can #WT of Can WT of Can
+ Wet Soil
WT of Can +
Dry Soil
Water
Content
(g)(g)(g)(%)
11.00
Date, Time Inflow OutFlow ∆t H Time K Qout / Qin Qin Qout
(sec)(cm)(min)(cm/sec)
8:23:00 4.8 20.5 0.0 15.7 0.0
8:25:00 11.0 14.5 120.0 3.5 2.0 1.33E-04 1.0 31 30
8:26:00 14.0 11.5 60.0 -2.5 3.0 1.41E-04 1.0 15 15
8:27:00 16.6 9.1 60.0 -7.5 4.0 1.24E-04 0.9 13 12
8:28:00 19.0 7.0 60.0 -12.0 5.0 1.16E-04 0.9 12 10.5
8:29:00 21.2 4.6 60.0 -16.6 6.0 1.25E-04 1.1 11 12
8:30:00 23.4 2.7 60.0 -20.7 7.0 1.16E-04 0.9 11 9.5
8:32:00 0.0 24.7 120.0 24.7 9.0
8:33:00 3.8 21.0 60.0 17.2 10.0 1.49E-04 1.0 19 18.5
8:34:00 7.3 17.5 60.0 10.2 11.0 1.48E-04 1.0 17.5 17.5
8:35:00 10.5 14.5 60.0 4.0 12.0 1.38E-04 0.9 16 15
8:36:00 13.5 12.0 60.0 -1.5 13.0 1.29E-04 0.8 15 12.5
8:37:00 16.0 9.2 60.0 -6.8 14.0 1.30E-04 1.1 12.5 14
8:38:00 18.8 6.8 60.0 -12.0 15.0 1.34E-04 0.9 14 12
8:39:00 21.0 4.6 60.0 -16.4 16.0 1.19E-04 1.0 11 11
8:40:00 23.2 2.6 60.0 -20.6 17.0 1.19E-04 0.9 11 10
8:42:00 0.0 24.0 120.0 24.0 19.0
8:43:00 4.0 20.0 60.0 16.0 20.0 1.61E-04 1.0 20 20
8:44:00 7.5 16.8 60.0 9.3 21.0 1.42E-04 0.9 17.5 16
8:45:00 10.8 13.8 60.0 3.0 22.0 1.41E-04 0.9 16.5 15
8:46:00 13.7 11.0 60.0 -2.7 23.0 1.35E-04 1.0 14.5 14
8:47:00 16.4 8.4 60.0 -8.0 24.0 1.32E-04 1.0 13.5 13
8:48:00 19.0 6.0 60.0 -13.0 25.0 1.30E-04 0.9 13 12
8:49:00 21.3 3.8 60.0 -17.5 26.0 1.23E-04 1.0 11.5 11
8:50:00 23.6 1.6 60.0 -22.0 27.0 1.29E-04 1.0 11.5 11
K (cm/s) =1.3E-04
Wisconsin Geotechnics Laboratory
Hydraulic Conductivity Test
ASTM D 5084
7/17/12E1_(A1/A2)Sample I.D.
( )
( )
( )

∆
∆
∆+=
2
1
*
*
H
HLntA
L
aa
aaK
outin
outin
s
Test Date :
Cell Pressure =35.8 psi Diameter of Sample, D = 15.2 cm
Inflow Pressure = 31.6 psi Length of Sample, L = 11.6 cm
Outflow Pressre =30.0 psi Area of Sample, A = 182.41 cm2
Pressure Difference =1.6 psi Sample Volume, V =2123.9 cm3
Effective Stress = 5.0 psi ain = 5 cm2
Hydraulic Gradient, i =10 aout = 5 cm2
Weight of wet sample =3615.2 (g)Sample Water Content =19.0 (%)
Wet Density =1.7 g/cm3 Dry Density =1.43 g/cm3
Can #WT of Can WT of Can
+ Wet Soil
WT of Can +
Dry Soil
Water
Content
(g)(g)(g)(%)
19.00
Date, Time Inflow OutFlow ∆t H Time K Qout / Qin Qin Qout
(sec)(cm)(min)(cm/sec)
9:05 0.0 24.0 0.0 24.0 0.0
9:06 2.7 21.5 60.0 18.8 1.0 1.03E-04 0.9 13.5 12.5
9:07 5.2 19.0 60.0 13.8 2.0 1.03E-04 1.0 12.5 12.5
9:08 7.5 16.5 60.0 9.0 3.0 1.03E-04 1.1 11.5 12.5
9:09 9.8 14.2 60.0 4.4 4.0 1.03E-04 1.0 11.5 11.5
9:10 12.0 12.0 60.0 0.0 5.0 1.02E-04 1.0 11 11
9:11 14.0 10.0 60.0 -4.0 6.0 9.63E-05 1.0 10 10
9:12 15.8 8.0 60.0 -7.8 7.0 9.48E-05 1.1 9 10
9:13 17.8 6.0 60.0 -11.8 8.0 1.04E-04 1.0 10 10
9:14 19.5 4.2 60.0 -15.3 9.0 9.41E-05 1.1 8.5 9
9:15 21.0 2.5 60.0 -18.5 10.0 8.90E-05 1.1 7.5 8.5
9:16 22.8 1.0 60.0 -21.8 11.0 9.50E-05 0.8 9 7.5
9:18 0.0 24.5 120.0 24.5 13.0
9:19 2.8 21.5 60.0 18.7 14.0 1.15E-04 1.1 14 15
9:20 5.6 19.0 60.0 13.4 15.0 1.10E-04 0.9 14 12.5
9:21 7.6 16.4 60.0 8.8 16.0 9.90E-05 1.3 10 13
9:22 10.0 14.0 60.0 4.0 17.0 1.07E-04 1.0 12 12
9:23 12.2 11.8 60.0 -0.4 18.0 1.02E-04 1.0 11 11
9:24 14.6 9.5 60.0 -5.1 19.0 1.14E-04 1.0 12 11.5
9:25 16.7 7.6 60.0 -9.1 20.0 1.01E-04 0.9 10.5 9.5
9:26 18.0 5.6 60.0 -12.4 21.0 8.62E-05 1.5 6.5 10
9:27 19.9 4.1 60.0 -15.8 22.0 9.19E-05 0.8 9.5 7.5
9:28 21.6 2.0 60.0 -19.6 23.0 1.07E-04 1.2 8.5 10.5
9:29 23.3 0.4 60.0 -22.9 24.0 9.62E-05 0.9 8.5 8
K (cm/s) =9.5E-05
Wisconsin Geotechnics Laboratory
Hydraulic Conductivity Test
ASTM D 5084
Sample I.D. E3_(A1/A2)7/17/12
( )
( )
( )

∆
∆
∆+=
2
1
*
*
H
HLntA
L
aa
aaK
outin
outins
Test Date :
Cell Pressure =35.8 psi Diameter of Sample, D = 15.2 cm
Inflow Pressure = 31.6 psi Length of Sample, L = 11.6 cm
Outflow Pressre =30.0 psi Area of Sample, A = 182.41 cm2
Pressure Difference =1.6 psi Sample Volume, V =2123.9 cm3
Effective Stress = 5.0 psi ain = 5 cm2
Hydraulic Gradient, i =10 aout = 5 cm2
Weight of wet sample =4018.9 (g)Sample Water Content =8.5 (%)
Wet Density =1.9 g/cm3 Dry Density =1.74 g/cm3
Can #WT of Can WT of Can
+ Wet Soil
WT of Can +
Dry Soil
Water
Content
(g)(g)(g)(%)
8.50
Date, Time Inflow OutFlow ∆t H Time K Qout / Qin Qin Qout
(sec)(cm)(min)(cm/sec)
10:00:00 0.0 24.5 0.0 24.5 0.0
10:00:10 6.4 18.0 10.0 11.6 0.2 1.58E-03 1.0 32 32.5
10:00:20 11.6 12.5 10.0 0.9 0.3 1.44E-03 1.1 26 27.5
10:00:30 16.4 7.5 10.0 -8.9 0.5 1.44E-03 1.0 24 25
10:00:40 20.6 3.0 10.0 -17.6 0.7 1.40E-03 1.1 21 22.5
10:03:00 0.0 24.5 140.0 24.5 3.0
10:03:10 6.2 18.0 10.0 11.8 3.2 1.55E-03 1.0 31 32.5
10:03:20 11.4 12.6 10.0 1.2 3.3 1.42E-03 1.0 26 27
10:03:30 16.2 7.6 10.0 -8.6 3.5 1.44E-03 1.0 24 25
10:03:40 20.6 2.9 10.0 -17.7 3.7 1.46E-03 1.1 22 23.5
10:07:00 0.0 24.6 200.0 24.6 7.0 -103
10:07:10 5.9 18.7 10.0 12.8 7.2 1.44E-03 1.0 29.5 29.5
10:07:20 11.2 12.9 10.0 1.7 7.3 1.48E-03 1.1 26.5 29
10:07:30 15.9 7.8 10.0 -8.1 7.5 1.43E-03 1.1 23.5 25.5
10:07:40 20.5 3.2 10.0 -17.3 7.7 1.47E-03 1.0 23 23
10:11:00 0.0 24.6 200.0 24.6 11.0
10:11:10 5.8 18.7 10.0 12.9 11.2 1.42E-03 1.0 29 29.5
10:11:20 11.0 13.0 10.0 2.0 11.3 1.45E-03 1.1 26 28.5
10:11:30 15.9 8.0 10.0 -7.9 11.5 1.44E-03 1.0 24.5 25
10:11:40 20.4 3.3 10.0 -17.1 11.7 1.47E-03 1.0 22.5 23.5
10:15:00 0.0 24.5 200.0 24.5 15.0
10:15:10 5.9 18.5 10.0 12.6 15.2 1.45E-03 1.0 29.5 30
10:15:20 11.0 12.9 10.0 1.9 15.3 1.43E-03 1.1 25.5 28
10:15:30 16.0 7.9 10.0 -8.1 15.5 1.46E-03 1.0 25 25
10:15:40 20.5 3.0 10.0 -17.5 15.7 1.51E-03 1.1 22.5 24.5
10:20:00 0.0 24.7 260.0 24.7 20.0
10:20:10 6.0 18.8 10.0 12.8 20.2 1.45E-03 1.0 30 29.5
10:20:20 11.5 13.2 10.0 1.7 20.3 1.48E-03 1.0 27.5 28
10:20:30 16.3 8.0 10.0 -8.3 20.5 1.46E-03 1.1 24 26
10:20:40 20.8 3.3 10.0 -17.5 20.7 1.47E-03 1.0 22.5 23.5
K (cm/s) =1.5E-03
Wisconsin Geotechnics Laboratory
Hydraulic Conductivity Test
ASTM D 5084
Sample I.D. W2_(B1/B2)7/17/12
( )
( )
( )

∆
∆
∆+=
2
1
*
*
H
HLntA
L
aa
aaK
outin
outins
Test Date :
Cell Pressure =35.8 psi Diameter of Sample, D = 15.2 cm
Inflow Pressure = 31.6 psi Length of Sample, L = 11.6 cm
Outflow Pressre =30.0 psi Area of Sample, A = 182.41 cm2
Pressure Difference =1.6 psi Sample Volume, V =2123.9 cm3
Effective Stress = 5.0 psi ain = 5 cm2
Hydraulic Gradient, i =10 aout = 5 cm2
Weight of wet sample =3878.3 (g)Sample Water Content =10.0 (%)
Wet Density =1.8 g/cm3 Dry Density =1.66 g/cm3
Can #WT of Can WT of Can
+ Wet Soil
WT of Can +
Dry Soil
Water
Content
(g)(g)(g)(%)
10.00
Date, Time Inflow OutFlow ∆t H Time K Qout / Qin Qin Qout
(sec)(cm)(min)(cm/sec)
10:56:00 0.0 24.2 0.0 24.2 0.0
10:56:10 5.4 18.8 10.0 13.4 0.2 1.31E-03 1.0 27 27
10:56:20 9.4 14.8 10.0 5.4 0.3 1.05E-03 1.0 20 20
10:56:30 12.9 11.2 10.0 -1.7 0.5 9.91E-04 1.0 17.5 18
10:56:40 16.4 7.8 10.0 -8.6 0.7 1.03E-03 1.0 17.5 17
10:56:50 19.6 4.6 10.0 -15.0 0.8 1.01E-03 1.0 16 16
10:57:00 22.3 1.8 10.0 -20.5 1.0 9.26E-04 1.0 13.5 14
11:00:00 0.0 24.2 180.0 24.2 4.0
11:00:10 5.0 19.2 10.0 14.2 4.2 1.21E-03 1.0 25 25
11:00:20 9.0 15.0 10.0 6.0 4.3 1.07E-03 1.1 20 21
11:00:30 13.0 11.2 10.0 -1.8 4.5 1.09E-03 1.0 20 19
11:00:40 16.5 7.7 10.0 -8.8 4.7 1.04E-03 1.0 17.5 17.5
11:00:50 19.7 4.4 10.0 -15.3 4.8 1.03E-03 1.0 16 16.5
11:01:00 22.8 1.4 10.0 -21.4 5.0 1.03E-03 1.0 15.5 15
11:05:00 0.0 24.5 240.0 24.5 9.0
11:05:10 4.7 19.8 10.0 15.1 9.2 1.13E-03 1.0 23.5 23.5
11:05:20 8.9 15.6 10.0 6.7 9.3 1.09E-03 1.0 21 21
11:05:30 12.8 11.6 10.0 -1.2 9.5 1.09E-03 1.0 19.5 20
11:05:40 16.6 8.0 10.0 -8.6 9.7 1.10E-03 0.9 19 18
11:05:50 19.7 4.8 10.0 -14.9 9.8 9.98E-04 1.0 15.5 16
11:06:00 22.7 1.8 10.0 -20.9 10.0 1.01E-03 1.0 15 15
11:12:00 0.0 24.5 360.0 24.5 16.0
11:12:10 4.8 19.8 10.0 15.0 16.2 1.15E-03 1.0 24 23.5
11:12:20 8.9 15.5 10.0 6.6 16.3 1.09E-03 1.0 20.5 21.5
11:12:30 12.8 11.6 10.0 -1.2 16.5 1.08E-03 1.0 19.5 19.5
11:12:40 16.3 8.1 10.0 -8.2 16.7 1.04E-03 1.0 17.5 17.5
11:12:50 19.6 4.8 10.0 -14.8 16.8 1.04E-03 1.0 16.5 16.5
11:13:00 22.6 1.8 10.0 -20.8 17.0 1.01E-03 1.0 15 15
11:17:00 0.0 24.5 240.0 24.5 21.0
11:17:10 4.7 19.7 10.0 15.0 21.2 1.15E-03 1.0 23.5 24
11:17:20 8.9 16.5 10.0 7.6 21.3 9.54E-04 0.8 21 16
11:17:30 12.9 11.6 10.0 -1.3 21.5 1.23E-03 1.2 20 24.5
11:17:40 16.5 8.0 10.0 -8.5 21.7 1.07E-03 1.0 18 18
11:17:50 19.8 4.7 10.0 -15.1 21.8 1.05E-03 1.0 16.5 16.5
11:18:00 22.7 1.7 10.0 -21.0 22.0 9.97E-04 1.0 14.5 15
K (cm/s) =1.1E-03
Wisconsin Geotechnics Laboratory
Hydraulic Conductivity Test
ASTM D 5084
Sample I.D. W5_(B1/B2)7/17/12
( )
( )
( )

∆
∆
∆+=
2
1
*
*
H
HLntA
L
aa
aaK
outin
outins
Test Date :
Cell Pressure =35.8 psi Diameter of Sample, D = 15.2 cm
Inflow Pressure = 31.6 psi Length of Sample, L = 11.6 cm
Outflow Pressre =30.0 psi Area of Sample, A = 182.41 cm2
Pressure Difference =1.6 psi Sample Volume, V =2123.9 cm3
Effective Stress = 5.0 psi ain = 5 cm2
Hydraulic Gradient, i =10 aout = 5 cm2
Weight of wet sample =3823.8 (g)Sample Water Content =13.0 (%)
Wet Density =1.8 g/cm3 Dry Density =1.59 g/cm3
Can #WT of Can WT of Can
+ Wet Soil
WT of Can +
Dry Soil
Water
Content
(g)(g)(g)(%)
13.00
Date, Time Inflow OutFlow ∆t H Time K Qout / Qin Qin Qout
(sec)(cm)(min)(cm/sec)
11:41:00 0.0 24.5 0.0 24.5 0.0
11:41:10 5.3 19.6 10.0 14.3 0.2 1.23E-03 0.9 26.5 24.5
11:41:20 10.0 14.8 10.0 4.8 0.3 1.24E-03 1.0 23.5 24
11:41:30 14.4 10.5 10.0 -3.9 0.5 1.23E-03 1.0 22 21.5
11:41:40 18.3 6.4 10.0 -11.9 0.7 1.22E-03 1.1 19.5 20.5
11:41:50 21.8 3.0 10.0 -18.8 0.8 1.13E-03 1.0 17.5 17
11:45:00 0.0 24.0 190.0 24.0 4.0
11:45:10 4.9 19.0 10.0 14.1 4.2 1.20E-03 1.0 24.5 25
11:45:20 9.5 14.3 10.0 4.8 4.3 1.22E-03 1.0 23 23.5
11:45:30 13.8 10.0 10.0 -3.8 4.5 1.21E-03 1.0 21.5 21.5
11:45:40 17.6 6.1 10.0 -11.5 4.7 1.17E-03 1.0 19 19.5
11:45:50 21.0 2.7 10.0 -18.3 4.8 1.11E-03 1.0 17 17
11:48:00 0.0 24.0 130.0 24.0 7.0
11:48:10 4.9 19.0 10.0 14.1 7.2 1.20E-03 1.0 24.5 25
11:48:20 9.4 15.5 10.0 6.1 7.3 1.04E-03 0.8 22.5 17.5
11:48:30 13.5 10.3 10.0 -3.2 7.5 1.30E-03 1.3 20.5 26
11:48:40 17.4 6.4 10.0 -11.0 7.7 1.18E-03 1.0 19.5 19.5
11:48:50 20.9 2.9 10.0 -18.0 7.8 1.14E-03 1.0 17.5 17.5
11:55:00 0.0 24.5 370.0 24.5 14.0
11:55:10 4.9 19.5 10.0 14.6 14.2 1.20E-03 1.0 24.5 25
11:55:20 9.5 14.9 10.0 5.4 14.3 1.20E-03 1.0 23 23
11:55:30 13.6 10.8 10.0 -2.8 14.5 1.15E-03 1.0 20.5 20.5
11:55:40 17.4 7.0 10.0 -10.4 14.7 1.15E-03 1.0 19 19
11:55:50 20.9 3.4 10.0 -17.5 14.8 1.15E-03 1.0 17.5 18
12:00:00 0.0 24.5 250.0 24.5 19.0
12:00:10 4.9 19.5 10.0 14.6 19.2 1.20E-03 1.0 24.5 25
12:00:20 9.2 14.9 10.0 5.7 19.3 1.16E-03 1.1 21.5 23
12:00:30 13.3 11.0 10.0 -2.3 19.5 1.12E-03 1.0 20.5 19.5
12:00:40 17.2 6.9 10.0 -10.3 19.7 1.20E-03 1.1 19.5 20.5
12:00:50 20.9 3.3 10.0 -17.6 19.8 1.18E-03 1.0 18.5 18
K (cm/s) =1.2E-03
Wisconsin Geotechnics Laboratory
Hydraulic Conductivity Test
ASTM D 5084
Sample I.D. W8_(A1/A2)7/17/12
( )
( )
( )

∆
∆
∆+=
2
1
*
*
H
HLntA
L
aa
aaK
outin
outins
Test Date :
Cell Pressure =35.8 psi Diameter of Sample, D = 15.2 cm
Inflow Pressure = 31.6 psi Length of Sample, L = 11.6 cm
Outflow Pressre =30.0 psi Area of Sample, A = 182.41 cm2
Pressure Difference =1.6 psi Sample Volume, V =2123.9 cm3
Effective Stress = 5.0 psi ain = 5 cm2
Hydraulic Gradient, i =10 aout = 5 cm2
Weight of wet sample =3792.1 (g)Sample Water Content =14.0 (%)
Wet Density =1.8 g/cm3 Dry Density =1.57 g/cm3
Can #WT of Can WT of Can
+ Wet Soil
WT of Can +
Dry Soil
Water
Content
(g)(g)(g)(%)
14.00
Date, Time Inflow OutFlow ∆t H Time K Qout / Qin Qin Qout
(sec)(cm)(min)(cm/sec)
13:01:00 0.0 24.0 0.0 24.0 0.0
13:01:10 1.8 22.6 10.0 20.8 0.2 3.78E-04 0.8 9 7
13:01:20 3.4 21.0 10.0 17.6 0.3 3.88E-04 1.0 8 8
13:01:30 5.0 19.6 10.0 14.6 0.5 3.72E-04 0.9 8 7
13:01:40 6.5 18.0 10.0 11.5 0.7 3.94E-04 1.1 7.5 8
13:01:50 8.0 16.6 10.0 8.6 0.8 3.78E-04 0.9 7.5 7
13:02:00 9.4 15.1 10.0 5.7 1.0 3.87E-04 1.1 7 7.5
13:02:10 10.9 13.8 10.0 2.9 1.2 3.82E-04 0.9 7.5 6.5
13:02:20 12.2 12.4 10.0 0.2 1.3 3.78E-04 1.1 6.5 7
13:02:30 13.6 11.0 10.0 -2.6 1.5 4.01E-04 1.0 7 7
13:02:40 14.9 9.8 10.0 -5.1 1.7 3.67E-04 0.9 6.5 6
13:02:50 16.2 8.5 10.0 -7.7 1.8 3.91E-04 1.0 6.5 6.5
13:03:00 17.5 7.2 10.0 -10.3 2.0 4.01E-04 1.0 6.5 6.5
13:03:10 18.8 6.0 10.0 -12.8 2.2 3.95E-04 0.9 6.5 6
13:03:20 20.0 4.9 10.0 -15.1 2.3 3.72E-04 0.9 6 5.5
13:03:30 21.0 3.8 10.0 -17.2 2.5 3.48E-04 1.1 5 5.5
13:03:40 22.3 2.6 10.0 -19.7 2.7 4.24E-04 0.9 6.5 6
13:03:50 23.6 1.5 10.0 -22.1 2.8 4.18E-04 0.8 6.5 5.5
13:07:00 0.0 24.0 190.0 24.0 6.0
13:07:20 3.6 20.5 20.0 16.9 6.3 4.26E-04 1.0 18 17.5
13:07:40 6.9 17.1 20.0 10.2 6.7 4.24E-04 1.0 16.5 17
13:08:00 9.9 14.3 20.0 4.4 7.0 3.86E-04 0.9 15 14
13:08:20 12.8 11.6 20.0 -1.2 7.3 3.92E-04 0.9 14.5 13.5
13:08:40 15.4 8.8 20.0 -6.6 7.7 3.97E-04 1.1 13 14
13:09:00 18.0 6.3 20.0 -11.7 8.0 3.94E-04 1.0 13 12.5
13:09:20 20.5 3.8 20.0 -16.7 8.3 4.06E-04 1.0 12.5 12.5
13:09:40 23.0 1.6 20.0 -21.4 8.7 4.01E-04 0.9 12.5 11
13:13:00 0.0 24.0 200.0 24.0 12.0
13:13:30 5.0 19.0 30.0 14.0 12.5 4.05E-04 1.0 25 25
13:14:00 9.7 14.3 30.0 4.6 13.0 4.11E-04 1.0 23.5 23.5
13:14:30 14.0 10.0 30.0 -4.0 13.5 4.06E-04 1.0 21.5 21.5
13:15:00 18.0 6.2 30.0 -11.8 14.0 3.97E-04 1.0 20 19
13:15:30 21.8 2.6 30.0 -19.2 14.5 4.06E-04 0.9 19 18
13:20:00 0.0 24.5 270.0 24.5 19.0
Wisconsin Geotechnics Laboratory
Hydraulic Conductivity Test
ASTM D 5084 - 00
Sample I.D. W9_(B1/B2)7/17/12
( )
( )
( )

∆
∆
∆+=
2
1
*
*
H
HLntA
L
aa
aaK
outin
outins
13:20:20 3.5 21.0 20.0 17.5 19.3 4.18E-04 1.0 17.5 17.5
13:20:40 6.7 17.8 20.0 11.1 19.7 4.03E-04 1.0 16 16
13:21:00 9.9 14.7 20.0 4.8 20.0 4.17E-04 1.0 16 15.5
13:21:20 12.9 11.8 20.0 -1.1 20.3 4.12E-04 1.0 15 14.5
13:21:40 15.7 9.2 20.0 -6.5 20.7 3.96E-04 0.9 14 13
13:22:00 18.3 6.6 20.0 -11.7 21.0 4.01E-04 1.0 13 13
13:22:20 20.9 4.0 20.0 -16.9 21.3 4.22E-04 1.0 13 13
K (cm/s) =4.1E-04
Sample I.D.Test Date
70.9 g Gs =2.61 6/16/2012
100.3 pcf
11.0 %
7.26 cm
2.54 cm
105.27 cm3
After Saturation, Sample Height Swell -0.02 cm
After Saturation, Sample Dry Density 1.62 (g/cm3)
23.4 %
37.92 %
Gravimetric Volumetric
Water Water
Content Content
(psi)(kPa)
0 0.001 0.234 0.379
0.25 1.724 0.235 0.381
0.5 3.449 0.234 0.379
1 6.897 0.230 0.372
2 13.794 0.207 0.335
4 27.588 0.148 0.240
8 55.176 0.130 0.211
15 103.455 0.117 0.189
30 206.910 0.108 0.175
61 420.717 0.104 0.168
0.000 0.239 0.386
0.000 0.239 0.386
Activity 360.00 0.066 0.106
Meter 4090.00 0.042 0.068
Test 49640.00 0.022 0.035
Activity Meter Test
Wt of Can Wt of Can Gravimetric Volumetric
++ Water Water
Wet Soil Dry Soil Content Content
(Mpa)(g)(g)(g)
49.64 7.6704 15.1835 15.0238 0.022 0.035
4.09 7.7126 15.3462 15.037 0.042 0.068
0.36 8.0127 15.8145 15.3346 0.066 0.106
Sample Volume, V =
Applied Pressure Reading
4.1
8
116
96.5
108.5
28.4
80.5
Suction Wt of Can
120
Geotechnics Laboratory
University of Wisconsin-Madison
(cm)
4
3.2
Pressure Plate Extractor Test
ASTM D 6836 - 02 (Method B)
E1_(A1/A2)
WT of Sample Ring =
Provided Water Content, w =
Diameter of Sample Ring, D =
Suction
Provided Dry Density, γd =
Height of Sample Ring, L =
Saturaded Water Content, w =
Saturaded Water Content, θ =
0.001 0.379 0.3792 0.000 0.000
1.72 0.381 0.3731 0.008 0.000
3.45 0.379 0.3646 0.014 0.000
θr =0.0236 6.90 0.372 0.3468 0.025 0.001
θs =0.3792 13.79 0.335 0.3157 0.019 0.000
α =0.0797 27.59 0.240 0.2736 -0.034 0.001
n =1.3495 55.18 0.211 0.2287 -0.018 0.000
m =0.2590 103.46 0.189 0.1913 -0.002 0.000
206.91 0.175 0.1563 0.019 0.000
420.72 0.168 0.1276 0.041 0.002
360.00 0.106 0.1333 -0.027 0.001
4090.00 0.068 0.0707 -0.002 0.000
0.001 0.3792 49640.00 0.035 0.0433 -0.008 0.000
0.025 0.3791
0.05 0.3791 Residual =0.000425339
0.075 0.3791
0.1 0.3790 press plate data (FROM PAGE 2)
0.15 0.3789 water activity meter data (FROM PAGE 2)
0.25 0.3787
0.5 0.3780
0.75 0.3771
1 0.3762
1.25 0.3752
1.5 0.3741
2 0.3718
3 0.3669
4 0.3618
5 0.3566
6 0.3514
7 0.3463
8 0.3413
9 0.3365
10 0.3318
15 0.3111
20 0.2941
30 0.2682
40 0.2494
50 0.2349
60 0.2234
70 0.2139
80 0.2060
90 0.1991
100 0.1931
500 0.1215
1000 0.1005
5000 0.0675
10000 0.0580
25000 0.0486
5.00E+04 0.0432
1.00E+05 0.0390
van Genuchten Eqn
Fit van Genuchten Eqn to SWCC Data
FOR GRAPHING
Suction (kPa)VWC
FOR FITTING
(∆WC)2∆WC (%)Predicted
VWC
Applied Suction
(kPa)
Measured
VWC
( )
m
nrs
r
1
1 


αψ+=θ−θ
θ−θ=Θ
0.001
0.01
0.1
1
10
100
1000
10000
100000
1000000
0.0 0.1 0.2 0.3 0.4
Su
c
t
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k
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a
)

Fitted Data
Pressure Plate Test
Activity Meter
Sample I.D.Test Date 6/16/2012
69.2 g Gs =2.53
89.25 pcf
19.0 %
7.26 cm
2.54 cm
105.27 cm3
After Saturation, Sample Height Swell 0.02 cm
After Saturation, Sample Dry Density 1.42 (g/cm3)
31.0 %
43.90 %
Gravimetric Volumetric
Water Water
Content Content
(psi)(kPa)
0 0.001 0.310 0.439
0.25 1.724 0.308 0.436
0.5 3.449 0.306 0.434
1 6.897 0.304 0.431
2 13.794 0.273 0.387
4 27.588 0.248 0.352
10 68.970 0.219 0.310
20 137.940 0.190 0.269
40 275.880 0.174 0.247
82 565.554 0.163 0.231
0.000 0.324 0.459
0.000 0.324 0.459
Activity 4130.00 0.107 0.152
Meter 9560.00 0.087 0.123
Test 36450.00 0.067 0.096
Activity Meter Test
Wt of Can Wt of Can Gravimetric Volumetric
++ Water Water
Wet Soil Dry Soil Content Content
(Mpa)(g)(g)(g)
36.45 7.7599 14.4494 14.0272 0.067 0.096
9.56 7.7453 14.5806 14.0358 0.087 0.123
4.13 7.5893 14.5888 13.9098 0.107 0.152
Geotechnics Laboratory
University of Wisconsin-Madison
(cm)
11.1
12.7
Pressure Plate Extractor Test
ASTM D 6836 - 02 (Method B)
E3_(A1/A2)
WT of Sample Ring =
Provided Water Content, w =
Diameter of Sample Ring, D =
Suction
Provided Dry Density, γd =
Height of Sample Ring, L =
Saturaded Water Content, w =
Saturaded Water Content, θ =
Suction Wt of Can
127.5
118.5
83
106
40.4
59.5
Sample Volume, V =
Applied Pressure Reading
14
15.5
0.001 0.439 0.4390 0.000 0.000
1.72 0.436 0.4329 0.003 0.000
3.45 0.434 0.4259 0.008 0.000
θr =0.0000 6.90 0.431 0.4126 0.019 0.000
θs =0.4390 13.79 0.387 0.3905 -0.004 0.000
α =0.0787 27.59 0.352 0.3602 -0.008 0.000
n =1.1870 68.97 0.310 0.3137 -0.003 0.000
m =0.1575 137.94 0.269 0.2786 -0.009 0.000
275.88 0.247 0.2459 0.001 0.000
565.55 0.231 0.2155 0.015 0.000
4130.00 0.152 0.1489 0.003 0.000
9560.00 0.123 0.1273 -0.004 0.000
0.001 0.4390 36450.00 0.096 0.0991 -0.004 0.000
0.025 0.4390
0.05 0.4389 Residual =6.70081E-05
0.075 0.4389
0.1 0.4388 press plate data (FROM PAGE 2)
0.15 0.4387 water activity meter data (FROM PAGE 2)
0.25 0.4384
0.5 0.4376
0.75 0.4367
1 0.4358
1.25 0.4348
1.5 0.4338
2 0.4318
3 0.4277
4 0.4237
5 0.4197
6 0.4159
7 0.4122
8 0.4086
9 0.4052
10 0.4019
15 0.3873
20 0.3752
30 0.3562
40 0.3418
50 0.3303
60 0.3209
70 0.3129
80 0.3061
90 0.3000
100 0.2946
500 0.2205
1000 0.1939
5000 0.1436
10000 0.1262
25000 0.1063
5.00E+04 0.0934
1.00E+05 0.0821
van Genuchten Eqn
Fit van Genuchten Eqn to SWCC Data
FOR GRAPHING
Suction (kPa)VWC
FOR FITTING
(∆WC)2∆WC (%)Predicted
VWC
Applied Suction
(kPa)
Measured
VWC
( )
m
nrs
r
1
1 


αψ+=θ−θ
θ−θ=Θ
0.001
0.01
0.1
1
10
100
1000
10000
100000
1000000
0.0 0.1 0.2 0.3 0.4 0.5
Su
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(
k
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a
)

Fitted Data
Pressure Plate Test
Activity Meter
Sample I.D.Test Date
200 cm3 Gs =2.63
Solid WT =348.5 g
Water WT = 67 g
1.74 g/cm3 108.78 pcf
19.3 %
0.19 cm2
Left Manometer
Reading
Right Manometer
Reading
Horizontal
Outflow
Reading
Water
Expelled
from Soil
Sample
Suction Grav. Water
Content
Volumetric
Water
Content
(cm)(cm)(cm)(mL)(cm)
199 199 2.5 0.000 0.19 0.34
201 197.7 24 4.085 3.300 0.18 0.32
202.8 195.7 31 5.415 7.100 0.18 0.31
206.1 192.4 38 6.745 13.700 0.17 0.30
209.4 189.1 42 7.505 20.300 0.17 0.30
213.5 185 46.6 8.379 28.500 0.17 0.30
216.5 182 52.4 9.481 34.500 0.17 0.29
221 177.5 59 10.735 43.500 0.16 0.28
225 173.1 72 13.205 51.900 0.16 0.27
229 168.5 79.3 14.592 60.500 0.15 0.26
235.2 163.1 96 17.765 72.100 0.14 0.25
248 150 119.4 22.211 98.000 0.13 0.23
257.5 140.8 131 24.415 116.700 0.12 0.21
266.5 131.5 144.5 26.980 135.000 0.12 0.20
287.5 110.5 163.5 30.590 177.000 0.11 0.18
317.5 81 176 32.965 236.500 0.10 0.17
391.5 6.5 200 37.525 385.000 0.09 0.15
-0.475 0.000 0.19 0.34
-0.475 0.000 0.19 0.34
2448.00 0.059 0.104
1.0 MPa = 1000.0 kPa Activity 11424.00 0.037 0.065
1.0 kPa = 10.2 cm Meter 264588.00 0.014 0.025
Test
Activity Meter Test
Suction Wt of Can Wt of Can
+ Wet Soil
Wt of Can
+ Dry Soil
Gravimetric
Water
Content
Volumetric
Water
Content
(Mpa)(g)(g)(g)
25.94 7.6398 15.8339 15.719 0.014 0.025
1.12 7.8975 16.1932 15.8943 0.037 0.065
0.24 8.0743 16.5516 16.0763 0.059 0.104
Geotechnics Laboratory
University of Wisconsin-Madison
Tube Area, A =
Volume, V =
Dry Unit Weight =
Hanging Column and Activity Meter Test
ASTM D 6836 - 02 (Method A and D)
W2_(B1/B2)
Saturated Water Content =
0.001 0.337 0.3166 0.020 0.000
3.30 0.317 0.3143 0.002 0.000
7.10 0.310 0.3104 -0.001 0.000
θr =0.0000 13.70 0.303 0.3029 0.000 0.000
θs =0.3166 20.30 0.299 0.2950 0.004 0.000
α =0.0216 28.50 0.295 0.2856 0.009 0.000
n =1.3212 34.50 0.290 0.2792 0.010 0.000
m =0.2431 43.50 0.283 0.2701 0.013 0.000
51.90 0.271 0.2625 0.009 0.000
60.50 0.264 0.2553 0.009 0.000
72.10 0.248 0.2466 0.002 0.000
98.00 0.226 0.2304 -0.004 0.000
0.001 0.3166 116.70 0.215 0.2209 -0.006 0.000
0.025 0.3166 135.00 0.202 0.2129 -0.011 0.000
0.05 0.3166 177.00 0.184 0.1981 -0.014 0.000
0.075 0.3166 236.50 0.172 0.1826 -0.010 0.000
0.1 0.3166 385.00 0.149 0.1581 -0.009 0.000
0.15 0.3166 2448.00 0.104 0.0884 0.015 0.000
0.25 0.3165 11424.00 0.065 0.0540 0.011 0.000
0.5 0.3164 264588.00 0.025 0.0197 0.005 0.000
0.75 0.3163 Residual =9.49943E-05
1 0.3161
1.25 0.3159 press plate data (FROM PAGE 2)
1.5 0.3158 water activity meter data (FROM PAGE 2)
2 0.3154
3 0.3146
4 0.3136
5 0.3127
6 0.3116
7 0.3106
8 0.3095
9 0.3083
10 0.3072
15 0.3013
20 0.2954
25 0.2896
30 0.2840
35 0.2786
40 0.2735
45 0.2687
50 0.2641
55 0.2598
60 0.2557
62 0.2541
65 0.2518
67 0.2503
70 0.2481
75 0.2446
80 0.2412
Measured
VWC
van Genuchten Eqn
Fit van Genuchten Eqn to SWCC Data
FOR GRAPHING
Suction (cm)VWC
FOR FITTING
(∆WC)2∆WC (%)Predicted
VWC
Applied Suction
(cm)
( )
m
nrs
r
1
1 


αψ+=θ−θ
θ−θ=Θ
0.001
0.01
0.1
1
10
100
1000
10000
100000
1000000
0.0 0.1 0.2 0.3 0.4
Su
c
t
i
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(
c
m
)
Volumetric Water Content
Fitted and Lab Data
Fitted Data
Hanging Column
Activity Meter
Sample I.D.Test Date
200 cm3 Gs =2.63
Solid WT =332.2 g
Water WT = 74 g
1.661 g/cm3 103.7 pcf
22 %
0.19 cm2
Left Manometer
Reading
Right Manometer
Reading
Horizontal
Outflow
Reading
Water
Expelled
from Soil
Sample
Suction Grav. Water
Content
Volumetric
Water
Content
(cm)(cm)(cm)(mL)(cm)
198.5 198.5 2.8 0.000 0.22 0.37
201 197.2 13 1.938 3.800 0.22 0.36
202.6 195.4 20.8 3.420 7.200 0.21 0.35
205.7 192.1 28.7 4.921 13.600 0.21 0.34
209 189 34.2 5.966 20.000 0.20 0.34
213.2 184.6 39.3 6.935 28.600 0.20 0.33
216.3 181.4 41.5 7.353 34.900 0.20 0.33
221.8 175.8 42.5 7.543 46.000 0.20 0.33
227.5 170 47.5 8.493 57.500 0.20 0.33
232.3 165.2 52.6 9.462 67.100 0.19 0.32
237.6 159.7 67 12.198 77.900 0.18 0.31
249.5 148 80.5 14.763 101.500 0.18 0.29
256 141 86 15.808 115.000 0.17 0.29
265 132 99 18.278 133.000 0.17 0.28
281.8 115 124 23.028 166.800 0.15 0.25
314.5 81.5 150 27.968 233.000 0.14 0.23
388 8 188 35.188 380.000 0.12 0.19
-0.532 0.000 0.22 0.37
-0.532 0.000 0.22 0.37
4794.00 0.057 0.095
1.0 MPa = 1000.0 kPa Activity 17544.00 0.035 0.058
1.0 kPa = 10.2 cm Meter 320280.00 0.013 0.022
Test
Activity Meter Test
Suction Wt of Can Wt of Can
+ Wet Soil
Wt of Can
+ Dry Soil
Gravimetric
Water
Content
Volumetric
Water
Content
(Mpa)(g)(g)(g)
31.4 7.7689 15.4851 15.3826 0.013 0.022
1.72 7.6668 15.5828 15.3142 0.035 0.058
0.47 7.6092 15.7261 15.2859 0.057 0.095
Geotechnics Laboratory
University of Wisconsin-Madison
Tube Area, A =
Volume, V =
Dry Unit Weight =
Hanging Column and Activity Meter Test
ASTM D 6836 - 02 (Method A and D)
W5_(B1/B2)
Saturated Water Content =
0.001 0.368 0.3583 0.010 0.000
3.80 0.358 0.3569 0.001 0.000
7.20 0.351 0.3550 -0.004 0.000
θr =0.0000 13.60 0.343 0.3508 -0.007 0.000
θs =0.3583 20.00 0.338 0.3461 -0.008 0.000
α =0.0118 28.60 0.333 0.3395 -0.006 0.000
n =1.3487 34.90 0.331 0.3346 -0.003 0.000
m =0.2586 46.00 0.330 0.3260 0.004 0.000
57.50 0.326 0.3175 0.008 0.000
67.10 0.321 0.3108 0.010 0.000
77.90 0.307 0.3036 0.003 0.000
101.50 0.294 0.2895 0.005 0.000
0.001 0.3583 115.00 0.289 0.2822 0.007 0.000
0.025 0.3583 133.00 0.277 0.2734 0.003 0.000
0.05 0.3583 166.80 0.253 0.2591 -0.006 0.000
0.075 0.3583 233.00 0.228 0.2372 -0.009 0.000
0.1 0.3583 380.00 0.192 0.2054 -0.013 0.000
0.15 0.3583 4794.00 0.095 0.0875 0.008 0.000
0.25 0.3583 17544.00 0.058 0.0557 0.003 0.000
0.5 0.3582 320280.00 0.022 0.0202 0.002 0.000
0.75 0.3582 Residual =4.58839E-05
1 0.3581
1.25 0.3580 press plate data (FROM PAGE 2)
1.5 0.3579 water activity meter data (FROM PAGE 2)
2 0.3577
3 0.3573
4 0.3568
5 0.3563
6 0.3557
7 0.3552
8 0.3546
9 0.3539
10 0.3533
15 0.3498
20 0.3461
25 0.3423
30 0.3384
35 0.3345
40 0.3306
45 0.3268
50 0.3230
55 0.3193
60 0.3157
62 0.3143
65 0.3122
67 0.3109
70 0.3088
75 0.3055
80 0.3023
Measured
VWC
van Genuchten Eqn
Fit van Genuchten Eqn to SWCC Data
FOR GRAPHING
Suction (cm)VWC
FOR FITTING
(∆WC)2∆WC (%)Predicted
VWC
Applied Suction
(cm)
( )
m
nrs
r
1
1 


αψ+=θ−θ
θ−θ=Θ
0.001
0.01
0.1
1
10
100
1000
10000
100000
1000000
0.0 0.1 0.2 0.3 0.4
Su
c
t
i
o
n

(
c
m
)

Volumetric Water Content
Fitted and Lab Data
Fitted Data
Hanging Column
Activity Meter
Sample I.D.Test Date
200 cm3 Gs =2.64
Solid WT =318.5 g
Water WT = 79 g
1.59 g/cm3 99.41 pcf
25 %
0.19 cm2
Left Manometer
Reading
Right Manometer
Reading
Horizontal
Outflow
Reading
Water
Expelled
from Soil
Sample
Suction Grav. Water
Content
Volumetric
Water
Content
(cm)(cm)(cm)(mL)(cm)
198.3 198.3 0.8 0.000 0.25 0.40
200 197 24.5 4.503 3.000 0.23 0.37
202 195 30.4 5.624 7.000 0.23 0.37
205 191.8 35.6 6.612 13.200 0.23 0.36
208.3 188.5 38.9 7.239 19.800 0.23 0.36
212 184.8 41.9 7.809 27.200 0.22 0.36
215.4 181.1 43.5 8.113 34.300 0.22 0.36
220.4 176.3 50 9.348 44.100 0.22 0.35
223.7 173 66.1 12.407 50.700 0.21 0.33
228.6 168 79 14.858 60.600 0.20 0.32
233.3 163.4 102.3 19.285 69.900 0.19 0.30
240.5 156 124 23.408 84.500 0.18 0.28
247.3 149.5 139 26.258 97.800 0.17 0.27
257 139.5 160 30.248 117.500 0.15 0.25
276.5 120.5 185 34.998 156.000 0.14 0.22
309.2 88 206 38.988 221.200 0.13 0.20
381 17 233 44.118 364.000 0.11 0.18
-0.152 0.000 0.25 0.40
-0.152 0.000 0.25 0.40
11424.00 0.054 0.087
1.0 MPa = 1000.0 kPa Activity 45798.00 0.034 0.054
1.0 kPa = 10.2 cm Meter 500616.00 0.012 0.020
Test
Activity Meter Test
Suction Wt of Can Wt of Can
+ Wet Soil
Wt of Can
+ Dry Soil
Gravimetric
Water
Content
Volumetric
Water
Content
(Mpa)(g)(g)(g)
49.08 7.9693 15.3475 15.257 0.012 0.020
4.49 10.3871 17.9633 17.7137 0.034 0.054
1.12 8.2429 16.041 15.6388 0.054 0.087
Geotechnics Laboratory
University of Wisconsin-Madison
Tube Area, A =
Volume, V =
Dry Unit Weight =
Hanging Column and Activity Meter Test
ASTM D 6836 - 02 (Method A and D)
W8_(A1/A2)
Saturated Water Content =
0.001 0.396 0.3738 0.023 0.001
3.00 0.374 0.3719 0.002 0.000
7.00 0.368 0.3680 0.000 0.000
θr =0.0000 13.20 0.363 0.3607 0.003 0.000
θs =0.3738 19.80 0.360 0.3524 0.008 0.000
α =0.0184 27.20 0.357 0.3430 0.014 0.000
n =1.3531 34.30 0.356 0.3343 0.022 0.000
m =0.2609 44.10 0.350 0.3229 0.027 0.001
50.70 0.334 0.3158 0.018 0.000
60.60 0.322 0.3059 0.016 0.000
69.90 0.300 0.2974 0.003 0.000
84.50 0.279 0.2854 -0.006 0.000
0.001 0.3738 97.80 0.265 0.2757 -0.011 0.000
0.025 0.3738 117.50 0.245 0.2633 -0.018 0.000
0.05 0.3738 156.00 0.221 0.2437 -0.022 0.000
0.075 0.3738 221.20 0.201 0.2197 -0.018 0.000
0.1 0.3738 364.00 0.176 0.1875 -0.012 0.000
0.15 0.3738 11424.00 0.087 0.0566 0.030 0.001
0.25 0.3738 45798.00 0.054 0.0347 0.020 0.000
0.5 0.3737 500616.00 0.020 0.0149 0.005 0.000
0.75 0.3735 Residual =0.000266321
1 0.3734
1.25 0.3732 press plate data (FROM PAGE 2)
1.5 0.3731 water activity meter data (FROM PAGE 2)
2 0.3727
3 0.3719
4 0.3710
5 0.3701
6 0.3690
7 0.3680
8 0.3669
9 0.3657
10 0.3646
15 0.3584
20 0.3521
25 0.3457
30 0.3395
35 0.3334
40 0.3276
45 0.3219
50 0.3166
55 0.3114
60 0.3065
62 0.3046
65 0.3018
67 0.3000
70 0.2973
75 0.2930
80 0.2889
Measured
VWC
van Genuchten Eqn
Fit van Genuchten Eqn to SWCC Data
FOR GRAPHING
Suction (cm)VWC
FOR FITTING
(∆WC)2∆WC (%)Predicted
VWC
Applied Suction
(cm)
( )
m
nrs
r
1
1 


αψ+=θ−θ
θ−θ=Θ
0.001
0.01
0.1
1
10
100
1000
10000
100000
1000000
0.0 0.1 0.2 0.3 0.4
Su
c
t
i
o
n

(
c
m
)
Volumetric Water Content
Fitted and Lab Data
Fitted Data
Hanging Column
Activity Meter
Sample I.D.Test Date 6/16/2012
71.2 g Gs =2.63
97.75 pcf
14.0 %
7.26 cm
2.54 cm
105.27 cm3
After Saturation, Sample Height Swell -0.01 cm
After Saturation, Sample Dry Density 1.57 (g/cm3)
25.5 %
40.15 %
Gravimetric Volumetric
Water Water
Content Content
(psi)(kPa)
0 0.001 0.255 0.402
0.25 1.724 0.253 0.398
0.5 3.449 0.253 0.398
1 6.897 0.249 0.392
2 13.794 0.228 0.358
4 27.588 0.185 0.291
8.8 60.694 0.159 0.250
15 103.455 0.147 0.231
30 206.910 0.133 0.208
61 420.717 0.124 0.196
0.000 0.260 0.409
0.000 0.260 0.409
Activity 1900.00 0.068 0.107
Meter 9980.00 0.044 0.070
Test 49420.00 0.023 0.037
Activity Meter Test
Wt of Can Wt of Can Gravimetric Volumetric
++ Water Water
Wet Soil Dry Soil Content Content
(Mpa)(g)(g)(g)
49.42 7.5967 14.8996 14.7337 0.023 0.037
9.98 8.4947 15.9007 15.5857 0.044 0.070
1.9 7.6924 15.3037 14.8201 0.068 0.107
Geotechnics Laboratory
University of Wisconsin-Madison
(cm)
4
6
Pressure Plate Extractor Test
ASTM D 6836 - 02 (Method B)
W9_(B1/B2)
WT of Sample Ring =
Provided Water Content, w =
Diameter of Sample Ring, D =
Suction
Provided Dry Density, γd =
Height of Sample Ring, L =
Saturaded Water Content, w =
Saturaded Water Content, θ =
Suction Wt of Can
117.5
110.5
87.5
98.2
28
65
Sample Volume, V =
Applied Pressure Reading
6
9.4
0.001 0.402 0.4015 0.000 0.000
1.72 0.398 0.3957 0.002 0.000
3.45 0.398 0.3884 0.009 0.000
θr =0.0000 6.90 0.392 0.3737 0.018 0.000
θs =0.4015 13.79 0.358 0.3482 0.010 0.000
α =0.0729 27.59 0.291 0.3125 -0.022 0.000
n =1.2569 60.69 0.250 0.2661 -0.016 0.000
m =0.2044 103.46 0.231 0.2352 -0.005 0.000
206.91 0.208 0.1986 0.010 0.000
420.72 0.196 0.1662 0.030 0.001
1900.00 0.107 0.1131 -0.006 0.000
9980.00 0.070 0.0739 -0.004 0.000
0.001 0.4015 49420.00 0.037 0.0490 -0.012 0.000
0.025 0.4015
0.05 0.4014 Residual =0.000187613
0.075 0.4014
0.1 0.4013 press plate data (FROM PAGE 2)
0.15 0.4012 water activity meter data (FROM PAGE 2)
0.25 0.4010
0.5 0.4002
0.75 0.3994
1 0.3985
1.25 0.3976
1.5 0.3966
2 0.3946
3 0.3903
4 0.3860
5 0.3817
6 0.3774
7 0.3732
8 0.3692
9 0.3653
10 0.3615
15 0.3444
20 0.3301
30 0.3077
40 0.2909
50 0.2776
60 0.2668
70 0.2577
80 0.2499
90 0.2431
100 0.2371
500 0.1590
1000 0.1333
5000 0.0882
10000 0.0738
25000 0.0583
5.00E+04 0.0488
1.00E+05 0.0409
van Genuchten Eqn
Fit van Genuchten Eqn to SWCC Data
FOR GRAPHING
Suction (kPa)VWC
FOR FITTING
(∆WC)2∆WC (%)Predicted
VWC
Applied Suction
(kPa)
Measured
VWC
( )
m
nrs
r
1
1 


αψ+=θ−θ
θ−θ=Θ
0.001
0.01
0.1
1
10
100
1000
10000
100000
1000000
0.0 0.1 0.2 0.3 0.4 0.5
Su
c
t
i
o
n

(
k
P
a
)

Volumetric Water Content
Fitted Data
Pressure Plate Test
Activity Meter
Sample WT of WT of Wet Soil WT of Dry Soil Water Suction 15 Bar
I.D.Moisture Can + Moisture Can + Moisture Can Content (MPa)Moisture Content
(G)(g)(g)(%)(See Plots)
7.67 15.7008 15.4575 3.1 13.66
7.7131 15.9538 15.5736 4.8 2.73
8.0119 16.3007 15.8023 6.4 1.14
7.6693 15.6094 15.3727 3.1 39.48
7.713 15.758 15.3519 5.3 6.72
8.0122 16.2961 15.6924 7.9 0.71
7.5901 14.9987 14.769 3.2 22.98
7.7454 15.3792 14.9965 5.3 4.73
7.761 15.5428 14.9547 8.2 0.81
7.5969 15.1856 14.9434 3.3 10.45
8.4944 16.1118 15.7007 5.7 1.84
7.6935 15.6657 15.0576 8.3 0.77
15 Bar (1.5 MPa) Moisture Content
6.0
6.9
7.0
6.4
E8_(B1/B2)
W2_(A1/A2)
W5_(A1/A2)
W8_(B1/B2)
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
0.1 1 10 100
Mo
i
s
t
u
r
e

C
o
n
t
e
n
t

%

Suction (MPa)
W2_(A1/A2)
W2_(A1/A2)
Power (W2_(A1/A2))
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
0.1 1 10 100
Mo
i
s
t
u
r
e

C
o
n
t
e
n
t
,

%

Suction (MPa)
W5_(A1/A2)
W5_(A1/A2)
Power (W5_(A1/A2))
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
0.1 1 10 100
Mo
i
s
t
u
r
e

C
o
n
t
e
n
t
,

%

Suction (MPa)
W8_(B1/B2)
W8_(B1/B2)
Power (W8_(B1/B2))
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
1 10 100
Mo
i
s
t
u
r
e

C
o
n
t
e
n
t

%

Suction (Mpa)
E8_(B1/B2)
E8_(B1/B2)
Power (E8_(B1/B2))

Updated Tailings Cover Design Report

APPENDIX B

FREEZE/THAW MODELING
White Mesa Uranium Mill
Frost Penetration Analysis
May 21, 2012
Geo-Smith Engineering, LLC
2591 Legacy Way
Grand Junction, CO 81503
Problem Statement:
Depth of frost penetration into the final cover for the proposed White Mesa uranium mill tailings
impoundment will be determined using the procedure adopted by the U.S. Department of Energy and
accepted Nuclear Regulatory Commission (DOE, 1989). The depth of freezing into a soil cover (depth of
frost penetration) is governed by the local climate, soil material and soil moisture content expected during
the operational life of the cover. A computational procedure to predict frost depth was initially proposed by
Berggren (1943), later improved and codified by Aldrich and Paynter (1953). Smith and Rager (2002)
apply these previous studies to determine an adequate thickness of a protective soil layer to protect an
underlying compacted soil.
Method of Solution:
Obtain site-specific climate data for the site from historic records kept by the Western Regional
Climate Center at the Desert Research Institute (DRI).
Use the method described in Smith and Rager (2002) to predict the maximum depth of frost
penetration into a design soil cover profile at a specific site, based on the site’s maximum and
minimum temperatures. Temperatures are analyzed for a “Frost Year”, a year beginning October 1st
running through September 30th. This depth will determine the thickness of protective soil required to
overlie a compacted soil radon/infiltration barrier.
Sources of Formula and References:
Modified Berggren Formula (MBF), (1968). U.S. Army Cold Regions Research and Engineering
Laboratory, CRREL Special Report SR 122, Oct.
Smith, G. E. and Rager, R. E. (2002). “Protective Layer Design in Landfill Covers Based on Frost
Penetration.” ASCE J. Geotechnical/Geoenvironmental Engineering, 128:9, 794-799.
U.S. Department of Energy (U.S. DOE), 1989. Technical Approach Document, Revision II, Uranium Mill
Tailings Remedial Action Project, UMTRA-DOE/AL 050425.0002, Albuquerque, New Mexico.
Data:
Daily maximum-minimum temperature data are available for Blanding, UT from the Western Regional
Climate Center back to the 1920’s. Some years contain insufficient data to use the procedure
proposed by Smith and Rager (2002), however an acceptable range of data exists.
·Spreadsheet data reduction used and presented in Attachment B.1.
Final cover configuration for the upper portion of the cover section for the White Mesa mill tailings is
presented in Table A.
Table A
Cover Material Soil Properties for Freeze/Thaw Analysis
Cover Layer
Design
Thickness
(inches)
Placed
Density (pcf)
Gravimetric
Water Content
(%)
Erosion Protection (topsoil to rock mulch with 75%
topsoil/25% minus 1-inch gravel)6 99 to 107 6
Water Storage/Biointrusion/Frost Protection/Radon
Attenuation Layer (low compaction water storage,
rooting zone)
-99 7.8
Calculation Procedure:
Step 1 Determine Freeze-Index Parameters
Climate data consisting of 53 years of at least 95% maximum and minimum daily air temperatures are
available for the Blanding, UT NWS station. The procedure outlined in Smith and Rager (2002) was
followed to compute the air-freeze index (degree-days), duration of freeze, and mean annual
temperature for each station and year. Spreadsheets used in data reduction are provided in Attachment B.1 while plotted data are included as Attachment B.3.
Step 2 Determine Surface Temperature Correction Data
The daily temperature data used to determine the freeze-index parameters are typically measured 1.5
m above the ground surface. However, measured ground temperatures can be greater than air
temperatures due to the effects of snow cover, net solar radiation, thermal conduction from warmer
soils below the surface, and convective heat transfer (Smith and Rager, 2002). The ratio of the
surface-freeze index to the air-freeze index is related through a factor, N. Because of the complexity
and uncertainty between the freeze indices, an estimate for N recommended for practitioners (Army
and Air Force, 1988) and Smith and Rager (2002) is 0.7.
Step 3 Determine Soil Thermal Properties
Soil thermal properties: thermal conductivity, heat capacity, and latent heat of fusion are products of
empirical relationships between the dry unit weight (pcf) and gravimetric moisture content (%). These
relationships are reproduced in Aitken and Berg (1968) originally published by Aldrich and Paynter
(1953) and Kersten (1949). Thermal properties vary between fine-grained and coarse-grained soil
types with fine-grained soils providing greater insulating properties.
Step 4 Determine Annual Frost Depths
Annual frost depths were determined for each of the subject years using the Modified Berggren
Formula (MBF) as discussed in Smith and Rager (2002). The MBF was converted to PC software by
the U. S. Army Corps of Engineers in 1968. Computer output for each year analyzed, including
design air freezing index, design surface freezing index, mean annual temperature, length of freezing
season, and total frost penetration, are presented as Attachment B.2.
Step 5 Determine Extreme Frost Depth
Extreme-value frost depths for the 200-year recurrence interval are determined by extrapolating
beyond the record of observed data using the cumulative probability distribution of the Gumbel
function (Smith and Rager, 2002). Frost depths are plotted in relation to the standard variate and
recurrence interval, and linear regression is used to extrapolate and interpolate freezing depths.
Graphical results of the extreme frost depth analysis are included in Attachment B.3, illustrating a
maximum frost penetration of 32 inches for a recurrence interval of 200 years (0.5% chance of
occurrence in any given year) with surface factor of 0.7.
Discussion:
The depth of frost penetration is reduced when the soil-water content increases because frozen water
insulates underlying soils, thus the drier the soil the greater the depth of frost penetration. Also, given
similar density and moisture conditions, the depth of frost penetration into coarse-grain soils, such as
a rocky soil layer, is slightly greater than for a fine-grained soil layer due to lower thermal capacity of
coarse-grain soils.
Computer Source:
MBF (Modified Berggren Formula). Coded for personal computer use by U.S. Army Corps of
Engineers, Cold Regions Research and Engineering Laboratory in 1968.
Microsoft Excel, version 2003.
References:
Aldrich, H.P. and Paynter, H.M., 1953. "Analytical studies of freezing and thawing of soils," First interim
report, U.S. Army Corps of Engineers, New England Division, Arctic Construction and Frost Effects
Laboratory (ACFEL) Technical Report 42.
Army and Air Force (1988). (Departments of the Army and the Air Force). “Arctic and Subarctic
Construction Calculation Methods for Determination of Depths of Freeze and Thaw in Soils, First Intern
Report.” Army TM 5-852-6, Air Force AFR 88-19, Vol. 6.
Berggren, W.P. , 1943. “Prediction of temperature distribution in frozen soils”, Trans. Am. Geophys.
Union, 3, 71-77.
Kersten, M.S., 1949."Laboratory research for the determination of the thermal properties of soils, "Final
Report, U.S. Army Corps of Engineers, New England Division, Arctic Construction and Frost Effects
Laboratory (ACFEL) Technical Report 23.
Modified Berggren Formula (MBF), (1968). U.S. Army Cold Regions Research and Engineering
Laboratory, CRREL Special Report SR 122, Oct.
Smith, G. E. and Rager, R. E. (2002). “Protective Layer Design in Landfill Covers Based on Frost
Penetration.” ASCE J. Geotechnical/Geoenvironmental Engineering, 128:9, 794-799.
ATTACHMENT B.1
CLIMATE DATA REDUCTION
SPREADSHEET ANALYSIS AND
FREEZE-INDEX PARAMETER GRAPHS
(see Excel Spreadsheet “blanding_temp (2).xls”)
Blanding, UT - Frost Depth Analysis1919-1920 day of frost year degree cumulative
day of year (consecutive date) max. temp. min. temp avg. temp day (
oF) degree day (
oF)274 1 64 37 50.5 18.5 18.5
275 2 68 39 53.5 21.5 40276 3 62 39 50.5 18.5 58.5277 4 56 29 42.5 10.5 69278 5 62 34 48 16 85
279 6 65 39 52 20 105280 7 60 44 52 20 125281 8 65 35 50 18 143282 9 62 36 49 17 160
283 10 58 38 48 16 176284 11 65 35 50 18 194285 12 58 41 49.5 17.5 211.5286 13 59 39 49 17 228.5
287 14 62 38 50 18 246.5288 15 57 33 45 13 259.5289 16 63 33 48 16 275.5290 17 62 35 48.5 16.5 292291 18 66 37 51.5 19.5 311.5292 19 51 31 41 9 320.5293 20 58 31 44.5 12.5 333294 21 57 29 43 11 344295 22 60 34 47 15 359296 23 62 42 52 20 379297 24 58 38 48 16 395298 25 48 38 43 11 406299 26 48 33 40.5 8.5 414.5
300 27 44 29 36.5 4.5 419301 28 45 23 34 2 421302 29 53 26 39.5 7.5 428.5303 30 49 26 37.5 5.5 434
304 31 43 27 35 3 437305 32 48 23 35.5 3.5 440.5306 33 49 25 37 5 445.5307 34 58 33 45.5 13.5 459
308 35 59 33 46 14 473309 36 59 33 46 14 487310 37 54 29 41.5 9.5 496.5311 38 42 30 36 4 500.5
312 39 53 32 42.5 10.5 511313 40 36 22 29 -3 508314 41 43 20 31.5 -0.5 507.5315 42 47 23 35 3 510.5316 43 52 22 37 5 515.5317 44 49 24 36.5 4.5 520318 45 53 27 40 8 528319 46 57 30 43.5 11.5 539.5320 47 62 28 45 13 552.5321 48 59 31 45 13 565.5322 49 56 38 47 15 580.5323 50 45 38 41.5 9.5 590324 51 48 36 42 10 600
325 52 54 31 42.5 10.5 610.5326 53 60 32 46 14 624.5327 54 60 32 46 14 638.5328 55 47 31 39 7 645.5
329 56 51 31 41 9 654.5330 57 46 33 39.5 7.5 662331 58 41 26 33.5 1.5 663.5332 59 35 19 27 -5 658.5
333 60 28 14 21 -11 647.5334 61 37 14 25.5 -6.5 641335 62 41 23 32 0 641336 63 48 22 35 3 644
337 64 52 29 40.5 8.5 652.5338 65 48 36 42 10 662.5339 66 46 37 41.5 9.5 672340 67 44 21 32.5 0.5 672.5341 68 34 18 26 -6 666.5342 69 30 12 21 -11 655.5343 70 20 5 12.5 -19.5 636344 71 33 5 19 -13 623345 72 43 14 28.5 -3.5 619.5346 73 38 22 30 -2 617.5347 74 24 12 18 -14 603.5348 75 26 5 15.5 -16.5 587349 76 27 5 16 -16 571
350 77 33 11 22 -10 561351 78 35 14 24.5 -7.5 553.5352 79 37 19 28 -4 549.5353 80 40 20 30 -2 547.5
354 81 39 21 30 -2 545.5355 82 43 20 31.5 -0.5 545356 83 43 26 34.5 2.5 547.5357 84 42 25 33.5 1.5 549
358 85 53 26 39.5 7.5 556.5359 86 41 25 33 1 557.5360 87 43 26 34.5 2.5 560361 88 47 22 34.5 2.5 562.5
362 89 41 26 33.5 1.5 564363 90 42 23 32.5 0.5 564.5364 91 40 23 31.5 -0.5 564365 92 41 23 32 0 564366 93 40 21 30.5 -1.5 562.51 94 39 19 29 -3 559.52 95 38 25 31.5 -0.5 5593 96 37 26 31.5 -0.5 558.54 97 38 29 33.5 1.5 5605 98 33 23 28 -4 5566 99 28 18 23 -9 5477 100 28 14 21 -11 5368 101 25 2 13.5 -18.5 517.5
9 102 24 1 12.5 -19.5 49810 103 42 9 25.5 -6.5 491.511 104 32 22 27 -5 486.512 105 33 15 24 -8 478.5
13 106 33 5 19 -13 465.5
14 107 27 5 16 -16 449.515 108 43 11 27 -5 444.516 109 46 24 35 3 447.517 110 41 18 29.5 -2.5 445
18 111 39 19 29 -3 44219 112 42 24 33 1 44320 113 45 28 36.5 4.5 447.521 114 40 30 35 3 450.5
22 115 42 32 37 5 455.523 116 42 24 33 1 456.524 117 34 21 27.5 -4.5 45225 118 31 21 26 -6 44626 119 33 20 26.5 -5.5 440.527 120 38 18 28 -4 436.528 121 34 21 27.5 -4.5 43229 122 30 18 24 -8 42430 123 32 10 21 -11 41331 124 38 20 29 -3 41032 125 38 28 33 1 41133 126 47 28 37.5 5.5 416.534 127 40 30 35 3 419.5
35 128 46 26 36 4 423.536 129 46 21 33.5 1.5 42537 130 42 24 33 1 42638 131 39 29 34 2 428
39 132 45 31 38 6 43440 133 43 28 35.5 3.5 437.541 134 42 22 32 0 437.542 135 42 20 31 -1 436.5
43 136 39 26 32.5 0.5 43744 137 42 20 31 -1 43645 138 46 22 34 2 43846 139 49 26 37.5 5.5 443.5
47 140 47 22 34.5 2.5 44648 141 49 24 36.5 4.5 450.549 142 45 27 36 4 454.550 143 44 22 33 1 455.551 144 44 32 38 6 461.552 145 50 29 39.5 7.5 46953 146 48 35 41.5 9.5 478.554 147 42 25 33.5 1.5 48055 148 40 20 30 -2 47856 149 42 19 30.5 -1.5 476.557 150 45 15 30 -2 474.558 151 54 31 42.5 10.5 48559 152 52 30 41 9 494
60 153 56 36 46 14 50861 154 50 29 39.5 7.5 515.562 155 40 27 33.5 1.5 51763 156 46 21 33.5 1.5 518.5
64 157 42 25 33.5 1.5 52065 158 48 26 37 5 52566 159 49 22 35.5 3.5 528.567 160 52 27 39.5 7.5 536
68 161 53 33 43 11 54769 162 46 31 38.5 6.5 553.570 163 42 29 35.5 3.5 55771 164 48 22 35 3 560
72 165 56 29 42.5 10.5 570.573 166 60 30 45 13 583.574 167 42 16 29 -3 580.575 168 53 22 37.5 5.5 58676 169 52 22 37 5 59177 170 47 18 32.5 0.5 591.578 171 57 26 41.5 9.5 60179 172 59 28 43.5 11.5 612.580 173 64 36 50 18 630.581 174 52 33 42.5 10.5 64182 175 48 28 38 6 64783 176 45 23 34 2 64984 177 50 31 40.5 8.5 657.5
85 178 48 25 36.5 4.5 66286 179 38 21 29.5 -2.5 659.587 180 47 20 33.5 1.5 66188 181 52 26 39 7 668
89 182 51 28 39.5 7.5 675.590 183 50 29 39.5 7.5 68391 184 39 12 25.5 -6.5 676.592 185 46 21 33.5 1.5 678
93 186 37 20 28.5 -3.5 674.594 187 49 15 32 0 674.595 188 61 29 45 13 687.596 189 66 32 49 17 704.5
97 190 66 38 52 20 724.598 191 65 38 51.5 19.5 74499 192 66 34 50 18 762100 193 59 32 45.5 13.5 775.5101 194 54 25 39.5 7.5 783102 195 60 29 44.5 12.5 795.5103 196 62 30 46 14 809.5104 197 55 36 45.5 13.5 823105 198 60 34 47 15 838106 199 55 28 41.5 9.5 847.5107 200 40 28 34 2 849.5108 201 42 28 35 3 852.5109 202 44 26 35 3 855.5
110 203 56 23 39.5 7.5 863111 204 40 22 31 -1 862112 205 52 20 36 4 866113 206 48 28 38 6 872
114 207 54 28 41 9 881115 208 52 29 40.5 8.5 889.5116 209 52 30 41 9 898.5117 210 53 28 40.5 8.5 907
118 211 65 35 50 18 925119 212 71 41 56 24 949120 213 73 43 58 26 975121 214 68 42 55 23 998
122 215 67 38 52.5 20.5 1018.5
123 216 64 38 51 19 1037.5124 217 68 35 51.5 19.5 1057125 218 65 39 52 20 1077126 219 69 38 53.5 21.5 1098.5
127 220 73 47 60 28 1126.5128 221 75 48 61.5 29.5 1156129 222 69 46 57.5 25.5 1181.5130 223 64 46 55 23 1204.5
131 224 57 39 48 16 1220.5132 225 65 36 50.5 18.5 1239133 226 61 43 52 20 1259134 227 62 38 50 18 1277135 228 57 40 48.5 16.5 1293.5136 229 60 40 50 18 1311.5137 230 70 41 55.5 23.5 1335138 231 79 47 63 31 1366139 232 82 49 65.5 33.5 1399.5140 233 84 52 68 36 1435.5141 234 74 50 62 30 1465.5142 235 63 46 54.5 22.5 1488143 236 67 44 55.5 23.5 1511.5
144 237 73 46 59.5 27.5 1539145 238 77 49 63 31 1570146 239 72 50 61 29 1599147 240 71 45 58 26 1625
148 241 77 48 62.5 30.5 1655.5149 242 80 52 66 34 1689.5150 243 79 51 65 33 1722.5151 244 77 48 62.5 30.5 1753
152 245 75 47 61 29 1782153 246 77 46 61.5 29.5 1811.5154 247 79 49 64 32 1843.5155 248 77 55 66 34 1877.5
156 249 79 52 65.5 33.5 1911157 250 78 54 66 34 1945158 251 76 50 63 31 1976159 252 83 52 67.5 35.5 2011.5160 253 82 56 69 37 2048.5161 254 75 54 64.5 32.5 2081162 255 75 50 62.5 30.5 2111.5163 256 77 48 62.5 30.5 2142164 257 77 54 65.5 33.5 2175.5165 258 76 53 64.5 32.5 2208166 259 76 48 62 30 2238167 260 76 49 62.5 30.5 2268.5168 261 78 51 64.5 32.5 2301
169 262 79 51 65 33 2334170 263 77 52 64.5 32.5 2366.5171 264 81 51 66 34 2400.5172 265 84 51 67.5 35.5 2436
173 266 85 54 69.5 37.5 2473.5174 267 86 58 72 40 2513.5175 268 83 51 67 35 2548.5176 269 82 54 68 36 2584.5
177 270 64 52 58 26 2610.5178 271 66 54 60 28 2638.5179 272 73 50 61.5 29.5 2668180 273 75 52 63.5 31.5 2699.5
181 274 80 51 65.5 33.5 2733182 275 83 56 69.5 37.5 2770.5183 276 85 56 70.5 38.5 2809184 277 84 58 71 39 2848185 278 83 56 69.5 37.5 2885.5186 279 82 56 69 37 2922.5187 280 84 56 70 38 2960.5188 281 89 57 73 41 3001.5189 282 90 57 73.5 41.5 3043190 283 91 60 75.5 43.5 3086.5191 284 87 61 74 42 3128.5192 285 87 62 74.5 42.5 3171193 286 84 59 71.5 39.5 3210.5
194 287 83 52 67.5 35.5 3246195 288 84 56 70 38 3284196 289 83 52 67.5 35.5 3319.5197 290 82 58 70 38 3357.5
198 291 85 60 72.5 40.5 3398199 292 87 58 72.5 40.5 3438.5200 293 88 57 72.5 40.5 3479201 294 87 51 69 37 3516
202 295 88 53 70.5 38.5 3554.5203 296 86 50 68 36 3590.5204 297 84 52 68 36 3626.5205 298 85 58 71.5 39.5 3666
206 299 86 62 74 42 3708207 300 85 55 70 38 3746208 301 87 61 74 42 3788209 302 88 61 74.5 42.5 3830.5210 303 88 61 74.5 42.5 3873211 304 86 60 73 41 3914212 305 86 60 73 41 3955213 306 83 59 71 39 3994214 307 80 59 69.5 37.5 4031.5215 308 76 56 66 34 4065.5216 309 79 55 67 35 4100.5217 310 78 58 68 36 4136.5218 311 87 59 73 41 4177.5
219 312 87 60 73.5 41.5 4219220 313 85 61 73 41 4260221 314 83 57 70 38 4298222 315 87 58 72.5 40.5 4338.5
223 316 84 60 72 40 4378.5224 317 83 58 70.5 38.5 4417225 318 83 59 71 39 4456226 319 86 61 73.5 41.5 4497.5
227 320 88 59 73.5 41.5 4539228 321 83 56 69.5 37.5 4576.5229 322 85 54 69.5 37.5 4614230 323 80 54 67 35 4649
231 324 73 52 62.5 30.5 4679.5
232 325 72 51 61.5 29.5 4709233 326 76 44 60 28 4737234 327 81 47 64 32 4769235 328 84 50 67 35 4804
236 329 83 54 68.5 36.5 4840.5237 330 73 56 64.5 32.5 4873238 331 75 51 63 31 4904239 332 71 52 61.5 29.5 4933.5
240 333 74 41 57.5 25.5 4959241 334 78 49 63.5 31.5 4990.5242 335 83 49 66 34 5024.5243 336 82 50 66 34 5058.5244 337 84 52 68 36 5094.5245 338 84 52 68 36 5130.5246 339 83 53 68 36 5166.5247 340 81 51 66 34 5200.5248 341 74 49 61.5 29.5 5230249 342 68 48 58 26 5256250 343 70 45 57.5 25.5 5281.5251 344 67 47 57 25 5306.5252 345 70 46 58 26 5332.5
253 346 73 43 58 26 5358.5254 347 76 44 60 28 5386.5255 348 75 45 60 28 5414.5256 349 75 45 60 28 5442.5
257 350 76 50 63 31 5473.5258 351 81 52 66.5 34.5 5508259 352 80 58 69 37 5545260 353 78 54 66 34 5579
261 354 82 53 67.5 35.5 5614.5262 355 83 55 69 37 5651.5263 356 81 56 68.5 36.5 5688264 357 68 50 59 27 5715
265 358 63 45 54 22 5737266 359 65 40 52.5 20.5 5757.5267 360 70 45 57.5 25.5 5783268 361 63 36 49.5 17.5 5800.5 67 672.5 length of freeze (day) 58
269 362 65 35 50 18 5818.5 125 411 frost depth (oF-day)261.5270 363 71 45 58 26 5844.5 average temperature 48.2271 364 78 42 60 28 5872.5272 365 75 49 62 30 5902.5273 366 75 51 63 31 5933.5
1920-1921 day of frost year degree cumulative
day of year (consecutive date) max. temp. min. temp avg. temp day (
oF) degree day (
oF)274 1 73 52 62.5 30.5 30.5275 2 75 53 64 32 62.5
276 3 75 46 60.5 28.5 91277 4 79 57 68 36 127278 5 74 51 62.5 30.5 157.5279 6 72 51 61.5 29.5 187
280 7 70 46 58 26 213281 8 71 43 57 25 238282 9 74 48 61 29 267283 10 67 47 57 25 292284 11 62 32 47 15 307285 12 65 37 51 19 326286 13 58 34 46 14 340287 14 62 33 47.5 15.5 355.5288 15 61 32 46.5 14.5 370289 16 65 36 50.5 18.5 388.5290 17 65 38 51.5 19.5 408291 18 62 38 50 18 426292 19 56 38 47 15 441
293 20 45 31 38 6 447294 21 40 23 31.5 -0.5 446.5295 22 49 26 37.5 5.5 452296 23 52 31 41.5 9.5 461.5
297 24 59 31 45 13 474.5298 25 41 25 33 1 475.5299 26 64 31 47.5 15.5 491300 27 55 33 44 12 503
301 28 58 32 45 13 516302 29 57 31 44 12 528303 30 50 39 44.5 12.5 540.5304 31 48 31 39.5 7.5 548
305 32 45 29 37 5 553306 33 50 25 37.5 5.5 558.5307 34 48 26 37 5 563.5308 35 51 27 39 7 570.5309 36 50 38 44 12 582.5310 37 50 39 44.5 12.5 595311 38 51 38 44.5 12.5 607.5312 39 49 28 38.5 6.5 614313 40 48 30 39 7 621314 41 50 30 40 8 629315 42 50 31 40.5 8.5 637.5316 43 50 31 40.5 8.5 646317 44 45 31 38 6 652
318 45 47 25 36 4 656319 46 43 27 35 3 659320 47 46 30 38 6 665321 48 51 28 39.5 7.5 672.5
322 49 54 31 42.5 10.5 683323 50 56 35 45.5 13.5 696.5324 51 55 31 43 11 707.5325 52 52 28 40 8 715.5
326 53 51 30 40.5 8.5 724327 54 50 27 38.5 6.5 730.5328 55 46 23 34.5 2.5 733329 56 51 31 41 9 742
330 57 47 25 36 4 746331 58 45 27 36 4 750332 59 39 20 29.5 -2.5 747.5333 60 48 21 34.5 2.5 750334 61 46 20 33 1 751335 62 49 24 36.5 4.5 755.5
0
100
200
300
400
500
600
700
800
900
0 50 100 150 200 250
fr
e
e
z
e

i
n
d
e
x

(
d
e
g
r
e
e

F
-
d
a
y
)
day of frost year
Blanding, UT
1919-1920
336 63 46 31 38.5 6.5 762
337 64 42 21 31.5 -0.5 761.5338 65 38 20 29 -3 758.5339 66 38 24 31 -1 757.5340 67 42 21 31.5 -0.5 757
341 68 41 22 31.5 -0.5 756.5342 69 40 22 31 -1 755.5343 70 40 19 29.5 -2.5 753344 71 39 21 30 -2 751
345 72 37 20 28.5 -3.5 747.5346 73 35 21 28 -4 743.5347 74 33 11 22 -10 733.5348 75 40 16 28 -4 729.5349 76 37 13 25 -7 722.5350 77 36 20 28 -4 718.5351 78 38 24 31 -1 717.5352 79 41 17 29 -3 714.5353 80 35 16 25.5 -6.5 708354 81 33 25 29 -3 705355 82 35 15 25 -7 698356 83 26 10 18 -14 684357 84 28 10 19 -13 671
358 85 24 11 17.5 -14.5 656.5359 86 32 11 21.5 -10.5 646360 87 32 11 21.5 -10.5 635.5361 88 34 10 22 -10 625.5
362 89 33 11 22 -10 615.5363 90 36 21 28.5 -3.5 612364 91 40 20 30 -2 610365 92 40 22 31 -1 609
1 93 32 10 21 -11 5982 94 35 15 25 -7 5913 95 38 21 29.5 -2.5 588.54 96 45 25 35 3 591.5
5 97 53 27 40 8 599.56 98 42 24 33 1 600.57 99 43 24 33.5 1.5 6028 100 37 18 27.5 -4.5 597.59 101 35 16 25.5 -6.5 59110 102 47 22 34.5 2.5 593.511 103 40 22 31 -1 592.512 104 32 13 22.5 -9.5 58313 105 33 8 20.5 -11.5 571.514 106 43 14 28.5 -3.5 56815 107 41 23 32 0 56816 108 45 25 35 3 57117 109 42 34 38 6 577
18 110 43 30 36.5 4.5 581.519 111 44 27 35.5 3.5 58520 112 39 23 31 -1 58421 113 44 22 33 1 585
22 114 52 30 41 9 59423 115 49 24 36.5 4.5 598.524 116 36 22 29 -3 595.525 117 39 17 28 -4 591.5
26 118 42 23 32.5 0.5 59227 119 41 32 36.5 4.5 596.528 120 38 30 34 2 598.529 121 42 23 32.5 0.5 599
30 122 35 20 27.5 -4.5 594.531 123 44 25 34.5 2.5 59732 124 41 23 32 0 59733 125 37 17 27 -5 59234 126 45 22 33.5 1.5 593.535 127 41 26 33.5 1.5 59536 128 42 28 35 3 59837 129 36 21 28.5 -3.5 594.538 130 35 21 28 -4 590.539 131 42 28 35 3 593.540 132 46 20 33 1 594.541 133 50 22 36 4 598.542 134 55 27 41 9 607.5
43 135 55 29 42 10 617.544 136 57 30 43.5 11.5 62945 137 58 31 44.5 12.5 641.546 138 56 22 39 7 648.5
47 139 47 12 29.5 -2.5 64648 140 46 13 29.5 -2.5 643.549 141 49 28 38.5 6.5 65050 142 45 22 33.5 1.5 651.5
51 143 46 25 35.5 3.5 65552 144 40 27 33.5 1.5 656.553 145 49 24 36.5 4.5 66154 146 50 27 38.5 6.5 667.5
55 147 62 35 48.5 16.5 68456 148 63 34 48.5 16.5 700.557 149 62 33 47.5 15.5 71658 150 65 34 49.5 17.5 733.559 151 64 35 49.5 17.5 75160 152 65 34 49.5 17.5 768.561 153 67 38 52.5 20.5 78962 154 67 42 54.5 22.5 811.563 155 59 42 50.5 18.5 83064 156 51 39 45 13 84365 157 52 30 41 9 85266 158 46 29 37.5 5.5 857.567 159 45 28 36.5 4.5 862
68 160 44 20 32 0 86269 161 53 27 40 8 87070 162 57 30 43.5 11.5 881.571 163 52 32 42 10 891.5
72 164 49 36 42.5 10.5 90273 165 48 37 42.5 10.5 912.574 166 52 37 44.5 12.5 92575 167 60 31 45.5 13.5 938.5
76 168 62 40 51 19 957.577 169 68 41 54.5 22.5 98078 170 60 37 48.5 16.5 996.579 171 53 29 41 9 1005.5
80 172 54 26 40 8 1013.5
81 173 59 38 48.5 16.5 103082 174 58 32 45 13 104383 175 61 32 46.5 14.5 1057.584 176 58 33 45.5 13.5 1071
85 177 50 31 40.5 8.5 1079.586 178 50 22 36 4 1083.587 179 52 30 41 9 1092.588 180 48 31 39.5 7.5 1100
89 181 52 38 45 13 111390 182 58 28 43 11 112491 183 57 32 44.5 12.5 1136.592 184 68 39 53.5 21.5 115893 185 64 40 52 20 117894 186 59 39 49 17 119595 187 42 21 31.5 -0.5 1194.596 188 35 23 29 -3 1191.597 189 40 19 29.5 -2.5 118998 190 48 19 33.5 1.5 1190.599 191 59 30 44.5 12.5 1203100 192 65 39 52 20 1223101 193 66 37 51.5 19.5 1242.5
102 194 60 35 47.5 15.5 1258103 195 61 32 46.5 14.5 1272.5104 196 56 31 43.5 11.5 1284105 197 50 30 40 8 1292
106 198 54 33 43.5 11.5 1303.5107 199 62 36 49 17 1320.5108 200 65 34 49.5 17.5 1338109 201 69 39 54 22 1360
110 202 63 37 50 18 1378111 203 60 34 47 15 1393112 204 69 37 53 21 1414113 205 67 47 57 25 1439
114 206 61 29 45 13 1452115 207 45 25 35 3 1455116 208 53 26 39.5 7.5 1462.5117 209 57 28 42.5 10.5 1473118 210 65 32 48.5 16.5 1489.5119 211 68 37 52.5 20.5 1510120 212 63 37 50 18 1528121 213 75 45 60 28 1556122 214 73 43 58 26 1582123 215 73 42 57.5 25.5 1607.5124 216 72 41 56.5 24.5 1632125 217 70 43 56.5 24.5 1656.5126 218 51 39 45 13 1669.5
127 219 48 29 38.5 6.5 1676128 220 59 33 46 14 1690129 221 65 35 50 18 1708130 222 66 42 54 22 1730
131 223 71 41 56 24 1754132 224 72 46 59 27 1781133 225 77 48 62.5 30.5 1811.5134 226 76 46 61 29 1840.5
135 227 73 40 56.5 24.5 1865136 228 69 50 59.5 27.5 1892.5137 229 60 47 53.5 21.5 1914138 230 54 43 48.5 16.5 1930.5
139 231 60 31 45.5 13.5 1944140 232 72 38 55 23 1967141 233 68 47 57.5 25.5 1992.5142 234 67 43 55 23 2015.5143 235 68 46 57 25 2040.5144 236 66 40 53 21 2061.5145 237 64 41 52.5 20.5 2082146 238 76 34 55 23 2105147 239 75 46 60.5 28.5 2133.5148 240 79 50 64.5 32.5 2166149 241 75 50 62.5 30.5 2196.5150 242 75 45 60 28 2224.5151 243 70 41 55.5 23.5 2248
152 244 72 42 57 25 2273153 245 77 45 61 29 2302154 246 78 43 60.5 28.5 2330.5155 247 63 47 55 23 2353.5
156 248 65 45 55 23 2376.5157 249 68 49 58.5 26.5 2403158 250 76 51 63.5 31.5 2434.5159 251 83 53 68 36 2470.5
160 252 85 55 70 38 2508.5161 253 85 60 72.5 40.5 2549162 254 87 61 74 42 2591163 255 85 58 71.5 39.5 2630.5
164 256 74 55 64.5 32.5 2663165 257 70 56 63 31 2694166 258 74 52 63 31 2725167 259 74 47 60.5 28.5 2753.5168 260 74 56 65 33 2786.5169 261 69 45 57 25 2811.5170 262 71 41 56 24 2835.5171 263 77 47 62 30 2865.5172 264 81 53 67 35 2900.5173 265 84 57 70.5 38.5 2939174 266 86 57 71.5 39.5 2978.5175 267 87 58 72.5 40.5 3019176 268 88 57 72.5 40.5 3059.5
177 269 87 53 70 38 3097.5178 270 88 52 70 38 3135.5179 271 88 58 73 41 3176.5180 272 89 56 72.5 40.5 3217
181 273 90 61 75.5 43.5 3260.5182 274 90 60 75 43 3303.5183 275 87 62 74.5 42.5 3346184 276 82 46 64 32 3378
185 277 68 54 61 29 3407186 278 79 42 60.5 28.5 3435.5187 279 84 55 69.5 37.5 3473188 280 88 57 72.5 40.5 3513.5
189 281 87 59 73 41 3554.5
190 282 84 59 71.5 39.5 3594191 283 86 60 73 41 3635192 284 87 59 73 41 3676193 285 83 58 70.5 38.5 3714.5
194 286 83 55 69 37 3751.5195 287 87 58 72.5 40.5 3792196 288 82 57 69.5 37.5 3829.5197 289 83 60 71.5 39.5 3869
198 290 86 61 73.5 41.5 3910.5199 291 85 60 72.5 40.5 3951200 292 89 64 76.5 44.5 3995.5201 293 86 61 73.5 41.5 4037202 294 85 61 73 41 4078203 295 88 59 73.5 41.5 4119.5204 296 87 58 72.5 40.5 4160205 297 89 60 74.5 42.5 4202.5206 298 84 60 72 40 4242.5207 299 83 59 71 39 4281.5208 300 85 56 70.5 38.5 4320209 301 88 59 73.5 41.5 4361.5210 302 88 59 73.5 41.5 4403
211 303 80 57 68.5 36.5 4439.5212 304 72 55 63.5 31.5 4471213 305 78 54 66 34 4505214 306 80 54 67 35 4540
215 307 85 60 72.5 40.5 4580.5216 308 86 57 71.5 39.5 4620217 309 86 57 71.5 39.5 4659.5218 310 88 59 73.5 41.5 4701
219 311 83 54 68.5 36.5 4737.5220 312 77 59 68 36 4773.5221 313 79 53 66 34 4807.5222 314 82 55 68.5 36.5 4844
223 315 86 54 70 38 4882224 316 85 56 70.5 38.5 4920.5225 317 85 55 70 38 4958.5226 318 76 57 66.5 34.5 4993227 319 75 50 62.5 30.5 5023.5228 320 82 51 66.5 34.5 5058229 321 83 53 68 36 5094230 322 82 55 68.5 36.5 5130.5231 323 82 53 67.5 35.5 5166232 324 77 57 67 35 5201233 325 70 56 63 31 5232234 326 70 57 63.5 31.5 5263.5235 327 75 52 63.5 31.5 5295
236 328 75 52 63.5 31.5 5326.5237 329 74 53 63.5 31.5 5358238 330 81 53 67 35 5393239 331 83 57 70 38 5431
240 332 82 54 68 36 5467241 333 83 57 70 38 5505242 334 82 57 69.5 37.5 5542.5243 335 77 52 64.5 32.5 5575
244 336 80 52 66 34 5609245 337 77 55 66 34 5643246 338 77 49 63 31 5674247 339 77 47 62 30 5704
248 340 78 48 63 31 5735249 341 78 47 62.5 30.5 5765.5250 342 79 52 65.5 33.5 5799251 343 79 50 64.5 32.5 5831.5252 344 78 48 63 31 5862.5253 345 78 48 63 31 5893.5254 346 77 49 63 31 5924.5255 347 77 48 62.5 30.5 5955256 348 73 50 61.5 29.5 5984.5257 349 84 48 66 34 6018.5258 350 82 48 65 33 6051.5259 351 76 46 61 29 6080.5260 352 76 51 63.5 31.5 6112
261 353 77 42 59.5 27.5 6139.5262 354 72 42 57 25 6164.5263 355 74 39 56.5 24.5 6189264 356 76 45 60.5 28.5 6217.5
265 357 80 49 64.5 32.5 6250266 358 80 49 64.5 32.5 6282.5 65 758.5 length of freeze (day) 42
267 359 82 49 65.5 33.5 6316 107 568 frost depth (oF-day)190.5268 360 80 49 64.5 32.5 6348.5 average temperature 49.8269 361 83 51 67 35 6383.5
270 362 84 48 66 34 6417.5271 363 80 51 65.5 33.5 6451272 364 75 40 57.5 25.5 6476.5273 365 71 48 59.5 27.5 6504
1923-1924 day of frost year degree cumulative
day of year (consecutive date) max. temp. min. temp avg. temp day (
oF) degree day (
oF)274 1 70 44 57 25 25275 2 67 39 53 21 46
276 3 69 40 54.5 22.5 68.5277 4 70 42 56 24 92.5278 5 71 44 57.5 25.5 118279 6 66 39 52.5 20.5 138.5
280 7 65 45 55 23 161.5281 8 64 42 53 21 182.5282 9 61 33 47 15 197.5283 10 62 34 48 16 213.5
284 11 62 36 49 17 230.5285 12 63 45 54 22 252.5286 13 67 40 53.5 21.5 274287 14 60 29 44.5 12.5 286.5
288 15 55 31 43 11 297.5289 16 60 33 46.5 14.5 312290 17 56 44 50 18 330291 18 60 31 45.5 13.5 343.5292 19 61 33 47 15 358.5293 20 63 34 48.5 16.5 375
0
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0 50 100 150 200 250
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day of frost year
Blanding, UT
1920-1921
294 21 64 33 48.5 16.5 391.5
295 22 64 34 49 17 408.5296 23 41 36 38.5 6.5 415297 24 46 31 38.5 6.5 421.5298 25 50 29 39.5 7.5 429
299 26 49 28 38.5 6.5 435.5300 27 54 29 41.5 9.5 445301 28 57 31 44 12 457302 29 59 30 44.5 12.5 469.5
303 30 62 28 45 13 482.5304 31 46 36 41 9 491.5305 32 49 35 42 10 501.5306 33 51 31 41 9 510.5307 34 53 36 44.5 12.5 523308 35 57 34 45.5 13.5 536.5309 36 57 36 46.5 14.5 551310 37 61 30 45.5 13.5 564.5311 38 65 34 49.5 17.5 582312 39 46 37 41.5 9.5 591.5313 40 54 34 44 12 603.5314 41 42 39 40.5 8.5 612315 42 41 34 37.5 5.5 617.5
316 43 44 36 40 8 625.5317 44 50 30 40 8 633.5318 45 53 29 41 9 642.5319 46 54 34 44 12 654.5
320 47 50 33 41.5 9.5 664321 48 53 31 42 10 674322 49 52 29 40.5 8.5 682.5323 50 50 27 38.5 6.5 689
324 51 51 29 40 8 697325 52 46 29 37.5 5.5 702.5326 53 50 26 38 6 708.5327 54 48 28 38 6 714.5
328 55 52 29 40.5 8.5 723329 56 43 30 36.5 4.5 727.5330 57 43 31 37 5 732.5331 58 33 25 29 -3 729.5332 59 40 20 30 -2 727.5333 60 43 22 32.5 0.5 728334 61 42 22 32 0 728335 62 40 30 35 3 731336 63 42 29 35.5 3.5 734.5337 64 46 27 36.5 4.5 739338 65 44 24 34 2 741339 66 46 24 35 3 744340 67 40 23 31.5 -0.5 743.5
341 68 42 26 34 2 745.5342 69 26 14 20 -12 733.5343 70 24 14 19 -13 720.5344 71 31 19 25 -7 713.5
345 72 33 23 28 -4 709.5346 73 35 20 27.5 -4.5 705347 74 34 24 29 -3 702348 75 35 26 30.5 -1.5 700.5
349 76 37 28 32.5 0.5 701350 77 39 29 34 2 703351 78 39 28 33.5 1.5 704.5352 79 34 20 27 -5 699.5
353 80 31 18 24.5 -7.5 692354 81 35 18 26.5 -5.5 686.5355 82 41 16 28.5 -3.5 683356 83 35 14 24.5 -7.5 675.5357 84 34 16 25 -7 668.5358 85 30 10 20 -12 656.5359 86 28 14 21 -11 645.5360 87 32 26 29 -3 642.5361 88 33 28 30.5 -1.5 641362 89 31 29 30 -2 639363 90 32 30 31 -1 638364 91 30 26 28 -4 634365 92 22 1 11.5 -20.5 613.5
1 93 24 10 17 -15 598.52 94 21 13 17 -15 583.53 95 24 10 17 -15 568.54 96 28 8 18 -14 554.5
5 97 28 8 18 -14 540.56 98 30 11 20.5 -11.5 5297 99 34 13 23.5 -8.5 520.58 100 33 15 24 -8 512.5
9 101 30 20 25 -7 505.510 102 33 13 23 -9 496.511 103 28 14 21 -11 485.512 104 26 10 18 -14 471.5
13 105 29 12 20.5 -11.5 46014 106 30 11 20.5 -11.5 448.515 107 22 8 15 -17 431.516 108 30 12 21 -11 420.517 109 29 12 20.5 -11.5 40918 110 33 13 23 -9 40019 111 30 8 19 -13 38720 112 32 2 17 -15 37221 113 36 12 24 -8 36422 114 35 16 25.5 -6.5 357.523 115 34 15 24.5 -7.5 35024 116 37 16 26.5 -5.5 344.525 117 36 20 28 -4 340.5
26 118 37 19 28 -4 336.527 119 41 18 29.5 -2.5 33428 120 39 20 29.5 -2.5 331.529 121 44 21 32.5 0.5 332
30 122 42 26 34 2 33431 123 47 24 35.5 3.5 337.532 124 42 24 33 1 338.533 125 46 27 36.5 4.5 343
34 126 35 24 29.5 -2.5 340.535 127 33 12 22.5 -9.5 33136 128 40 13 26.5 -5.5 325.537 129 36 27 31.5 -0.5 325
38 130 41 25 33 1 326
39 131 52 30 41 9 33540 132 49 31 40 8 34341 133 45 29 37 5 34842 134 52 28 40 8 356
43 135 58 32 45 13 36944 136 56 35 45.5 13.5 382.545 137 53 31 42 10 392.546 138 58 37 47.5 15.5 408
47 139 57 31 44 12 42048 140 50 24 37 5 42549 141 48 28 38 6 43150 142 53 28 40.5 8.5 439.551 143 57 30 43.5 11.5 45152 144 49 29 39 7 45853 145 45 34 39.5 7.5 465.554 146 43 33 38 6 471.555 147 42 26 34 2 473.556 148 38 24 31 -1 472.557 149 40 25 32.5 0.5 47358 150 45 24 34.5 2.5 475.559 151 46 21 33.5 1.5 477
60 152 53 29 41 9 48661 153 52 31 41.5 9.5 495.562 154 55 34 44.5 12.5 50863 155 48 29 38.5 6.5 514.5
64 156 47 24 35.5 3.5 51865 157 38 22 30 -2 51666 158 50 21 35.5 3.5 519.567 159 52 26 39 7 526.5
68 160 54 24 39 7 533.569 161 40 18 29 -3 530.570 162 54 21 37.5 5.5 53671 163 41 19 30 -2 534
72 164 47 26 36.5 4.5 538.573 165 43 17 30 -2 536.574 166 40 23 31.5 -0.5 53675 167 38 21 29.5 -2.5 533.576 168 36 21 28.5 -3.5 53077 169 39 19 29 -3 52778 170 37 26 31.5 -0.5 526.579 171 33 20 26.5 -5.5 52180 172 32 26 29 -3 51881 173 31 27 29 -3 51582 174 32 24 28 -4 51183 175 33 24 28.5 -3.5 507.584 176 40 33 36.5 4.5 512
85 177 45 32 38.5 6.5 518.586 178 54 31 42.5 10.5 52987 179 58 30 44 12 54188 180 44 29 36.5 4.5 545.5
89 181 40 22 31 -1 544.590 182 35 20 27.5 -4.5 54091 183 41 13 27 -5 53592 184 50 33 41.5 9.5 544.5
93 185 55 31 43 11 555.594 186 54 33 43.5 11.5 56795 187 56 37 46.5 14.5 581.596 188 60 36 48 16 597.5
97 189 67 46 56.5 24.5 62298 190 68 50 59 27 64999 191 64 45 54.5 22.5 671.5100 192 60 40 50 18 689.5101 193 59 38 48.5 16.5 706102 194 61 40 50.5 18.5 724.5103 195 60 33 46.5 14.5 739104 196 62 35 48.5 16.5 755.5105 197 64 37 50.5 18.5 774106 198 60 29 44.5 12.5 786.5107 199 48 23 35.5 3.5 790108 200 60 21 40.5 8.5 798.5109 201 68 37 52.5 20.5 819
110 202 74 46 60 28 847111 203 61 37 49 17 864112 204 74 39 56.5 24.5 888.5113 205 66 36 51 19 907.5
114 206 68 40 54 22 929.5115 207 56 33 44.5 12.5 942116 208 54 32 43 11 953117 209 54 28 41 9 962
118 210 57 29 43 11 973119 211 55 32 43.5 11.5 984.5120 212 64 34 49 17 1001.5121 213 65 44 54.5 22.5 1024
122 214 66 43 54.5 22.5 1046.5123 215 72 48 60 28 1074.5124 216 75 47 61 29 1103.5125 217 65 46 55.5 23.5 1127126 218 62 39 50.5 18.5 1145.5127 219 58 37 47.5 15.5 1161128 220 67 37 52 20 1181129 221 69 45 57 25 1206130 222 70 43 56.5 24.5 1230.5131 223 72 48 60 28 1258.5132 224 75 47 61 29 1287.5133 225 79 49 64 32 1319.5134 226 75 48 61.5 29.5 1349
135 227 74 49 61.5 29.5 1378.5136 228 75 43 59 27 1405.5137 229 72 46 59 27 1432.5138 230 73 45 59 27 1459.5
139 231 75 47 61 29 1488.5140 232 77 46 61.5 29.5 1518141 233 79 48 63.5 31.5 1549.5142 234 81 52 66.5 34.5 1584
143 235 74 51 62.5 30.5 1614.5144 236 78 49 63.5 31.5 1646145 237 79 48 63.5 31.5 1677.5146 238 76 47 61.5 29.5 1707
147 239 80 48 64 32 1739
148 240 68 54 61 29 1768149 241 64 42 53 21 1789150 242 65 42 53.5 21.5 1810.5151 243 66 40 53 21 1831.5
152 244 65 36 50.5 18.5 1850153 245 72 43 57.5 25.5 1875.5154 246 78 56 67 35 1910.5155 247 83 56 69.5 37.5 1948
156 248 86 61 73.5 41.5 1989.5157 249 83 54 68.5 36.5 2026158 250 79 51 65 33 2059159 251 76 48 62 30 2089160 252 70 39 54.5 22.5 2111.5161 253 76 40 58 26 2137.5162 254 83 51 67 35 2172.5163 255 85 56 70.5 38.5 2211164 256 86 58 72 40 2251165 257 85 59 72 40 2291166 258 87 60 73.5 41.5 2332.5167 259 90 63 76.5 44.5 2377168 260 91 64 77.5 45.5 2422.5
169 261 93 57 75 43 2465.5170 262 86 58 72 40 2505.5171 263 79 54 66.5 34.5 2540172 264 80 47 63.5 31.5 2571.5
173 265 78 49 63.5 31.5 2603174 266 81 52 66.5 34.5 2637.5175 267 84 66 75 43 2680.5176 268 88 69 78.5 46.5 2727
177 269 90 73 81.5 49.5 2776.5178 270 91 76 83.5 51.5 2828179 271 93 59 76 44 2872180 272 95 77 86 54 2926
181 273 92 71 81.5 49.5 2975.5182 274 91 61 76 44 3019.5183 275 90 63 76.5 44.5 3064184 276 92 64 78 46 3110185 277 78 60 69 37 3147186 278 84 66 75 43 3190187 279 86 68 77 45 3235188 280 88 59 73.5 41.5 3276.5189 281 84 56 70 38 3314.5190 282 88 64 76 44 3358.5191 283 90 66 78 46 3404.5192 284 94 55 74.5 42.5 3447193 285 84 56 70 38 3485
194 286 90 57 73.5 41.5 3526.5195 287 88 62 75 43 3569.5196 288 85 64 74.5 42.5 3612197 289 81 60 70.5 38.5 3650.5
198 290 83 62 72.5 40.5 3691199 291 85 63 74 42 3733200 292 82 57 69.5 37.5 3770.5201 293 83 60 71.5 39.5 3810
202 294 86 61 73.5 41.5 3851.5203 295 85 60 72.5 40.5 3892204 296 87 60 73.5 41.5 3933.5205 297 82 59 70.5 38.5 3972
206 298 88 66 77 45 4017207 299 86 65 75.5 43.5 4060.5208 300 89 57 73 41 4101.5209 301 86 56 71 39 4140.5210 302 80 61 70.5 38.5 4179211 303 84 57 70.5 38.5 4217.5212 304 86 60 73 41 4258.5213 305 82 63 72.5 40.5 4299214 306 84 63 73.5 41.5 4340.5215 307 86 58 72 40 4380.5216 308 84 56 70 38 4418.5217 309 81 56 68.5 36.5 4455218 310 85 56 70.5 38.5 4493.5
219 311 84 54 69 37 4530.5220 312 83 52 67.5 35.5 4566221 313 84 56 70 38 4604222 314 85 57 71 39 4643
223 315 84 58 71 39 4682224 316 86 56 71 39 4721225 317 84 57 70.5 38.5 4759.5226 318 80 57 68.5 36.5 4796
227 319 82 58 70 38 4834228 320 81 54 67.5 35.5 4869.5229 321 80 57 68.5 36.5 4906230 322 78 54 66 34 4940
231 323 79 48 63.5 31.5 4971.5232 324 82 53 67.5 35.5 5007233 325 81 50 65.5 33.5 5040.5234 326 85 47 66 34 5074.5235 327 86 55 70.5 38.5 5113236 328 90 61 75.5 43.5 5156.5237 329 88 62 75 43 5199.5238 330 89 64 76.5 44.5 5244239 331 88 63 75.5 43.5 5287.5240 332 90 59 74.5 42.5 5330241 333 91 61 76 44 5374242 334 86 60 73 41 5415243 335 85 57 71 39 5454
244 336 84 58 71 39 5493245 337 86 60 73 41 5534246 338 83 61 72 40 5574247 339 85 67 76 44 5618
248 340 87 68 77.5 45.5 5663.5249 341 90 69 79.5 47.5 5711250 342 86 56 71 39 5750251 343 86 58 72 40 5790
252 344 82 59 70.5 38.5 5828.5253 345 76 44 60 28 5856.5254 346 70 54 62 30 5886.5255 347 66 44 55 23 5909.5
400
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Blanding, UT
1923-1924
256 348 71 41 56 24 5933.5
257 349 73 44 58.5 26.5 5960258 350 75 46 60.5 28.5 5988.5259 351 76 49 62.5 30.5 6019260 352 71 49 60 28 6047
261 353 72 46 59 27 6074262 354 68 44 56 24 6098263 355 59 36 47.5 15.5 6113.5264 356 70 42 56 24 6137.5
265 357 72 43 57.5 25.5 6163266 358 73 43 58 26 6189267 359 76 41 58.5 26.5 6215.5268 360 70 43 56.5 24.5 6240269 361 68 40 54 22 6262 68 745.5 length of freeze (day) 62270 362 64 35 49.5 17.5 6279.5 130 326 frost depth (oF-day)419.5271 363 70 37 53.5 21.5 6301 average temperature 49.4272 364 71 36 53.5 21.5 6322.5273 365 73 41 57 25 6347.5274 366 72 42 57 25 6372.5
1924-1925 day of frost year degree cumulative
day of year (consecutive date) max. temp. min. temp avg. temp day (
oF) degree day (
oF)
274 1 71 31 51 19 19275 2 69 29 49 17 36276 3 73 34 53.5 21.5 57.5277 4 74 35 54.5 22.5 80
278 5 75 37 56 24 104279 6 77 38 57.5 25.5 129.5280 7 69 36 52.5 20.5 150281 8 68 37 52.5 20.5 170.5282 9 67 38 52.5 20.5 191283 10 64 45 54.5 22.5 213.5284 11 44 34 39 7 220.5285 12 48 32 40 8 228.5286 13 49 28 38.5 6.5 235287 14 53 36 44.5 12.5 247.5288 15 65 42 53.5 21.5 269289 16 73 43 58 26 295290 17 70 44 57 25 320
291 18 68 32 50 18 338292 19 55 32 43.5 11.5 349.5293 20 58 34 46 14 363.5294 21 62 35 48.5 16.5 380
295 22 65 39 52 20 400296 23 66 40 53 21 421297 24 68 39 53.5 21.5 442.5298 25 70 39 54.5 22.5 465
299 26 69 40 54.5 22.5 487.5300 27 62 35 48.5 16.5 504301 28 60 35 47.5 15.5 519.5302 29 48 34 41 9 528.5
303 30 47 26 36.5 4.5 533304 31 53 26 39.5 7.5 540.5305 32 62 29 45.5 13.5 554306 33 63 35 49 17 571307 34 64 38 51 19 590308 35 64 40 52 20 610309 36 60 38 49 17 627310 37 57 30 43.5 11.5 638.5311 38 41 21 31 -1 637.5312 39 49 23 36 4 641.5313 40 51 31 41 9 650.5314 41 49 35 42 10 660.5315 42 43 17 30 -2 658.5
316 43 48 24 36 4 662.5317 44 49 27 38 6 668.5318 45 51 29 40 8 676.5319 46 54 34 44 12 688.5
320 47 56 33 44.5 12.5 701321 48 60 34 47 15 716322 49 57 29 43 11 727323 50 55 36 45.5 13.5 740.5
324 51 54 35 44.5 12.5 753325 52 60 38 49 17 770326 53 64 39 51.5 19.5 789.5327 54 50 29 39.5 7.5 797
328 55 41 21 31 -1 796329 56 38 19 28.5 -3.5 792.5330 57 46 24 35 3 795.5331 58 45 26 35.5 3.5 799332 59 47 21 34 2 801333 60 48 27 37.5 5.5 806.5334 61 49 28 -32 774.5335 62 49 26 37.5 5.5 780336 63 47 29 38 6 786337 64 40 32 36 4 790338 65 45 34 39.5 7.5 797.5339 66 41 28 34.5 2.5 800340 67 32 26 29 -3 797
341 68 33 19 26 -6 791342 69 26 11 18.5 -13.5 777.5343 70 24 18 21 -11 766.5344 71 29 18 23.5 -8.5 758
345 72 35 20 27.5 -4.5 753.5346 73 37 21 29 -3 750.5347 74 39 23 31 -1 749.5348 75 34 20 27 -5 744.5
349 76 36 22 29 -3 741.5350 77 38 24 31 -1 740.5351 78 36 20 28 -4 736.5352 79 31 19 25 -7 729.5
353 80 29 12 20.5 -11.5 718354 81 24 3 13.5 -18.5 699.5355 82 28 6 17 -15 684.5356 83 26 21 23.5 -8.5 676357 84 27 17 22 -10 666358 85 18 -8 5 -27 639
0
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0 20 40 60 80 100 120 140 160
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day of frost year
359 86 10 -5 2.5 -29.5 609.5
360 87 12 -10 1 -31 578.5361 88 10 -8 1 -31 547.5362 89 19 -3 8 -24 523.5363 90 29 8 18.5 -13.5 510
364 91 24 10 17 -15 495365 92 28 16 22 -10 4851 93 19 10 14.5 -17.5 467.52 94 18 12 15 -17 450.5
3 95 22 9 15.5 -16.5 4344 96 20 4 12 -20 4145 97 21 1 11 -21 3936 98 19 4 11.5 -20.5 372.57 99 27 7 17 -15 357.58 100 24 6 15 -17 340.59 101 20 4 12 -20 320.510 102 18 -4 7 -25 295.511 103 24 4 14 -18 277.512 104 24 1 12.5 -19.5 25813 105 20 4 12 -20 23814 106 26 2 14 -18 22015 107 30 20 25 -7 213
16 108 31 15 23 -9 20417 109 28 8 18 -14 19018 110 21 0 10.5 -21.5 168.519 111 23 8 15.5 -16.5 152
20 112 32 10 21 -11 14121 113 30 10 20 -12 12922 114 33 14 23.5 -8.5 120.523 115 34 15 24.5 -7.5 113
24 116 38 24 31 -1 11225 117 40 28 34 2 11426 118 41 25 33 1 11527 119 39 20 29.5 -2.5 112.5
28 120 40 21 30.5 -1.5 11129 121 41 24 32.5 0.5 111.530 122 44 26 35 3 114.531 123 43 28 35.5 3.5 11832 124 40 28 34 2 12033 125 42 30 36 4 12434 126 49 31 40 8 13235 127 50 31 40.5 8.5 140.536 128 51 40 45.5 13.5 15437 129 52 38 45 13 16738 130 46 24 35 3 17039 131 40 19 29.5 -2.5 167.540 132 38 22 30 -2 165.5
41 133 40 24 32 0 165.542 134 42 23 32.5 0.5 16643 135 44 21 32.5 0.5 166.544 136 45 24 34.5 2.5 169
45 137 46 26 36 4 17346 138 43 24 33.5 1.5 174.547 139 42 24 33 1 175.548 140 45 25 35 3 178.5
49 141 48 26 37 5 183.550 142 51 25 38 6 189.551 143 49 28 38.5 6.5 19652 144 47 31 39 7 203
53 145 44 30 37 5 20854 146 46 28 37 5 21355 147 44 31 37.5 5.5 218.556 148 50 25 37.5 5.5 22457 149 49 28 38.5 6.5 230.558 150 46 25 35.5 3.5 23459 151 45 25 35 3 23760 152 45 M - - 23761 153 54 28 41 9 24662 154 53 34 43.5 11.5 257.563 155 54 30 42 10 267.564 156 57 33 45 13 280.565 157 60 32 46 14 294.5
66 158 55 34 44.5 12.5 30767 159 54 35 44.5 12.5 319.568 160 50 30 40 8 327.569 161 48 24 36 4 331.5
70 162 41 20 30.5 -1.5 33071 163 44 25 34.5 2.5 332.572 164 41 23 32 0 332.573 165 46 20 33 1 333.5
74 166 47 24 35.5 3.5 33775 167 60 26 43 11 34876 168 57 20 38.5 6.5 354.577 169 58 21 39.5 7.5 362
78 170 54 27 40.5 8.5 370.579 171 57 31 44 12 382.580 172 60 35 47.5 15.5 39881 173 60 34 47 15 41382 174 61 36 48.5 16.5 429.583 175 58 38 48 16 445.584 176 64 37 50.5 18.5 46485 177 65 40 52.5 20.5 484.586 178 61 32 46.5 14.5 49987 179 54 39 46.5 14.5 513.588 180 61 37 49 17 530.589 181 56 31 43.5 11.5 54290 182 63 36 49.5 17.5 559.5
91 183 58 30 44 12 571.592 184 56 37 46.5 14.5 58693 185 59 39 49 17 60394 186 64 41 52.5 20.5 623.5
95 187 60 40 50 18 641.596 188 54 42 48 16 657.597 189 57 30 43.5 11.5 66998 190 60 36 48 16 685
99 191 65 42 53.5 21.5 706.5100 192 67 45 56 24 730.5101 193 69 49 59 27 757.5102 194 68 47 57.5 25.5 783
103 195 74 48 61 29 812
104 196 72 42 57 25 837105 197 74 50 62 30 867106 198 72 49 60.5 28.5 895.5107 199 70 38 54 22 917.5
108 200 68 40 54 22 939.5109 201 66 37 51.5 19.5 959110 202 60 40 50 18 977111 203 56 40 48 16 993
112 204 52 28 40 8 1001113 205 41 30 35.5 3.5 1004.5114 206 56 27 41.5 9.5 1014115 207 60 31 45.5 13.5 1027.5116 208 66 40 53 21 1048.5117 209 70 42 56 24 1072.5118 210 72 44 58 26 1098.5119 211 68 44 56 24 1122.5120 212 67 40 53.5 21.5 1144121 213 65 42 53.5 21.5 1165.5122 214 68 44 56 24 1189.5123 215 71 42 56.5 24.5 1214124 216 70 44 57 25 1239
125 217 77 48 62.5 30.5 1269.5126 218 75 46 60.5 28.5 1298127 219 77 47 62 30 1328128 220 78 54 66 34 1362
129 221 84 46 65 33 1395130 222 79 46 62.5 30.5 1425.5131 223 77 50 63.5 31.5 1457132 224 71 45 58 26 1483
133 225 64 40 52 20 1503134 226 68 46 57 25 1528135 227 71 47 59 27 1555136 228 82 44 63 31 1586
137 229 78 44 61 29 1615138 230 79 45 62 30 1645139 231 77 47 62 30 1675140 232 82 55 68.5 36.5 1711.5141 233 78 56 67 35 1746.5142 234 77 55 66 34 1780.5143 235 79 57 68 36 1816.5144 236 80 56 68 36 1852.5145 237 79 57 68 36 1888.5146 238 78 56 67 35 1923.5147 239 81 52 66.5 34.5 1958148 240 79 54 66.5 34.5 1992.5149 241 80 56 68 36 2028.5
150 242 79 53 66 34 2062.5151 243 75 49 62 30 2092.5152 244 71 41 56 24 2116.5153 245 72 50 61 29 2145.5
154 246 69 51 60 28 2173.5155 247 64 45 54.5 22.5 2196156 248 61 42 51.5 19.5 2215.5157 249 62 41 51.5 19.5 2235
158 250 61 36 48.5 16.5 2251.5159 251 70 46 58 26 2277.5160 252 73 47 60 28 2305.5161 253 77 51 64 32 2337.5
162 254 75 36 55.5 23.5 2361163 255 77 44 60.5 28.5 2389.5164 256 79 60 69.5 37.5 2427165 257 77 55 66 34 2461166 258 79 54 66.5 34.5 2495.5167 259 82 64 73 41 2536.5168 260 81 61 71 39 2575.5169 261 82 59 70.5 38.5 2614170 262 86 62 74 42 2656171 263 84 56 70 38 2694172 264 81 57 69 37 2731173 265 85 54 69.5 37.5 2768.5174 266 78 60 69 37 2805.5
175 267 86 60 73 41 2846.5176 268 83 64 73.5 41.5 2888177 269 82 57 69.5 37.5 2925.5178 270 87 60 73.5 41.5 2967
179 271 89 70 79.5 47.5 3014.5180 272 86 72 79 47 3061.5181 273 84 70 77 45 3106.5182 274 79 64 71.5 39.5 3146
183 275 83 57 70 38 3184184 276 79 56 67.5 35.5 3219.5185 277 76 56 66 34 3253.5186 278 74 55 64.5 32.5 3286
187 279 73 58 65.5 33.5 3319.5188 280 78 61 69.5 37.5 3357189 281 84 62 73 41 3398190 282 86 63 74.5 42.5 3440.5191 283 85 58 71.5 39.5 3480192 284 87 64 75.5 43.5 3523.5193 285 90 59 74.5 42.5 3566194 286 95 62 78.5 46.5 3612.5195 287 91 77 84 52 3664.5196 288 99 79 89 57 3721.5197 289 96 68 82 50 3771.5198 290 95 79 87 55 3826.5199 291 93 64 78.5 46.5 3873
200 292 92 70 81 49 3922201 293 86 64 75 43 3965202 294 84 59 71.5 39.5 4004.5203 295 85 62 73.5 41.5 4046
204 296 86 64 75 43 4089205 297 88 67 77.5 45.5 4134.5206 298 87 65 76 44 4178.5207 299 85 64 74.5 42.5 4221
208 300 81 62 71.5 39.5 4260.5209 301 85 67 76 44 4304.5210 302 83 57 70 38 4342.5211 303 84 57 70.5 38.5 4381
212 304 86 58 72 40 4421
213 305 86 59 72.5 40.5 4461.5214 306 84 54 69 37 4498.5215 307 88 61 74.5 42.5 4541216 308 81 60 70.5 38.5 4579.5
217 309 80 57 68.5 36.5 4616218 310 84 68 76 44 4660219 311 82 64 73 41 4701220 312 84 56 70 38 4739
221 313 80 58 69 37 4776222 314 74 54 64 32 4808223 315 76 48 62 30 4838224 316 78 56 67 35 4873225 317 84 57 70.5 38.5 4911.5226 318 86 57 71.5 39.5 4951227 319 84 54 69 37 4988228 320 83 58 70.5 38.5 5026.5229 321 81 60 70.5 38.5 5065230 322 83 61 72 40 5105231 323 82 58 70 38 5143232 324 86 57 71.5 39.5 5182.5233 325 86 59 72.5 40.5 5223
234 326 85 62 73.5 41.5 5264.5235 327 78 67 72.5 40.5 5305236 328 81 68 74.5 42.5 5347.5237 329 80 54 67 35 5382.5
238 330 82 61 71.5 39.5 5422239 331 80 58 69 37 5459240 332 74 53 63.5 31.5 5490.5241 333 75 54 64.5 32.5 5523
242 334 84 59 71.5 39.5 5562.5243 335 79 55 67 35 5597.5244 336 75 55 65 33 5630.5245 337 78 55 66.5 34.5 5665
246 338 80 57 68.5 36.5 5701.5247 339 79 48 63.5 31.5 5733248 340 78 54 66 34 5767249 341 80 57 68.5 36.5 5803.5250 342 81 56 68.5 36.5 5840251 343 77 53 65 33 5873252 344 81 52 66.5 34.5 5907.5253 345 77 53 65 33 5940.5254 346 79 49 64 32 5972.5255 347 76 49 62.5 30.5 6003256 348 73 46 59.5 27.5 6030.5257 349 79 45 62 30 6060.5258 350 78 50 64 32 6092.5
259 351 80 56 68 36 6128.5260 352 80 55 67.5 35.5 6164261 353 78 56 67 35 6199262 354 62 51 56.5 24.5 6223.5
263 355 64 42 53 21 6244.5 60 806.5 length of freeze (day) 60
264 356 61 41 51 19 6263.5 120 111 frost depth (oF-day)695.5265 357 64 40 52 20 6283.5 average temperature 49.9266 358 66 38 52 20 6303.5267 359 69 42 55.5 23.5 6327
268 360 71 44 57.5 25.5 6352.5269 361 76 50 63 31 6383.5270 362 M M - - -271 363 M M - - -272 364 M M - - -273 365 M M - - -
1927-1928 day of frost year degree cumulative
day of year (consecutive date) max. temp. min. temp avg. temp day (
oF) degree day (
oF)
274 1 61 31 46 14 14275 2 64 28 46 14 28276 3 70 36 53 21 49277 4 71 36 53.5 21.5 70.5
278 5 68 38 53 21 91.5279 6 67 39 53 21 112.5280 7 68 38 53 21 133.5281 8 71 36 53.5 21.5 155
282 9 70 38 54 22 177283 10 68 40 54 22 199284 11 70 39 54.5 22.5 221.5285 12 68 41 54.5 22.5 244
286 13 72 40 56 24 268287 14 71 42 56.5 24.5 292.5288 15 73 43 58 26 318.5289 16 75 45 60 28 346.5290 17 71 43 57 25 371.5291 18 73 42 57.5 25.5 397292 19 74 41 57.5 25.5 422.5293 20 75 44 59.5 27.5 450294 21 73 43 58 26 476295 22 72 41 56.5 24.5 500.5296 23 74 43 58.5 26.5 527297 24 72 40 56 24 551298 25 71 38 54.5 22.5 573.5
299 26 70 36 53 21 594.5300 27 67 34 50.5 18.5 613301 28 69 32 50.5 18.5 631.5302 29 65 33 49 17 648.5
303 30 59 36 47.5 15.5 664304 31 54 39 46.5 14.5 678.5305 32 56 38 47 15 693.5306 33 55 35 45 13 706.5
307 34 57 38 47.5 15.5 722308 35 63 31 47 15 737309 36 58 33 45.5 13.5 750.5310 37 54 38 46 14 764.5
311 38 55 40 47.5 15.5 780312 39 58 37 47.5 15.5 795.5313 40 60 36 48 16 811.5314 41 59 36 47.5 15.5 827315 42 54 27 40.5 8.5 835.5316 43 58 29 43.5 11.5 847
0
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500
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700
800
900
0 20 40 60 80 100 120 140 160
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day of frost year
Blanding, UT
1924-1925
317 44 57 28 42.5 10.5 857.5
318 45 55 26 40.5 8.5 866319 46 57 28 42.5 10.5 876.5320 47 58 29 43.5 11.5 888321 48 58 27 42.5 10.5 898.5
322 49 56 29 42.5 10.5 909323 50 57 25 41 9 918324 51 56 24 40 8 926325 52 57 28 42.5 10.5 936.5
326 53 55 22 38.5 6.5 943327 54 56 27 41.5 9.5 952.5328 55 58 29 43.5 11.5 964329 56 57 27 42 10 974330 57 58 28 43 11 985331 58 55 23 39 7 992332 59 54 25 39.5 7.5 999.5333 60 54 26 40 8 1007.5334 61 50 22 36 4 1011.5335 62 44 26 35 3 1014.5336 63 45 24 34.5 2.5 1017337 64 46 25 35.5 3.5 1020.5338 65 46 23 34.5 2.5 1023
339 66 43 21 32 0 1023340 67 40 18 29 -3 1020341 68 38 7 22.5 -9.5 1010.5342 69 31 12 21.5 -10.5 1000
343 70 34 16 25 -7 993344 71 39 21 30 -2 991345 72 41 20 30.5 -1.5 989.5346 73 43 22 32.5 0.5 990
347 74 40 21 30.5 -1.5 988.5348 75 39 18 28.5 -3.5 985349 76 33 1 17 -15 970350 77 31 7 19 -13 957
351 78 32 14 23 -9 948352 79 31 2 16.5 -15.5 932.5353 80 30 9 19.5 -12.5 920354 81 32 17 24.5 -7.5 912.5355 82 34 18 26 -6 906.5356 83 36 24 30 -2 904.5357 84 34 20 27 -5 899.5358 85 36 21 28.5 -3.5 896359 86 38 18 28 -4 892360 87 40 12 26 -6 886361 88 39 25 32 0 886362 89 38 24 31 -1 885363 90 36 22 29 -3 882
364 91 33 19 26 -6 876365 92 33 1 17 -15 8611 93 35 6 20.5 -11.5 849.52 94 48 15 31.5 -0.5 849
3 95 45 18 31.5 -0.5 848.54 96 40 18 29 -3 845.55 97 41 18 29.5 -2.5 8436 98 40 18 29 -3 840
7 99 40 18 29 -3 8378 100 39 18 28.5 -3.5 833.59 101 38 15 26.5 -5.5 82810 102 41 15 28 -4 824
11 103 45 16 30.5 -1.5 822.512 104 53 21 37 5 827.513 105 48 21 34.5 2.5 83014 106 44 21 32.5 0.5 830.515 107 44 21 32.5 0.5 83116 108 34 11 22.5 -9.5 821.517 109 29 3 16 -16 805.518 110 30 4 17 -15 790.519 111 32 8 20 -12 778.520 112 34 11 22.5 -9.5 76921 113 36 9 22.5 -9.5 759.522 114 37 9 23 -9 750.523 115 35 11 23 -9 741.5
24 116 32 8 20 -12 729.525 117 31 9 20 -12 717.526 118 39 13 26 -6 711.527 119 41 15 28 -4 707.5
28 120 35 11 23 -9 698.529 121 39 19 29 -3 695.530 122 50 22 36 4 699.531 123 48 23 35.5 3.5 703
32 124 52 25 38.5 6.5 709.533 125 39 28 33.5 1.5 71134 126 37 32 34.5 2.5 713.535 127 34 31 32.5 0.5 714
36 128 41 29 35 3 71737 129 41 24 32.5 0.5 717.538 130 28 21 24.5 -7.5 71039 131 35 21 28 -4 70640 132 41 18 29.5 -2.5 703.541 133 44 24 34 2 705.542 134 41 26 33.5 1.5 70743 135 34 20 27 -5 70244 136 32 14 23 -9 69345 137 29 15 22 -10 68346 138 31 15 23 -9 67447 139 44 17 30.5 -1.5 672.548 140 46 19 32.5 0.5 673
49 141 46 22 34 2 67550 142 47 23 35 3 67851 143 46 23 34.5 2.5 680.552 144 40 22 31 -1 679.5
53 145 38 21 29.5 -2.5 67754 146 42 24 33 1 67855 147 37 22 29.5 -2.5 675.556 148 42 18 30 -2 673.5
57 149 46 23 34.5 2.5 67658 150 52 22 37 5 68159 151 51 29 40 8 68960 152 44 31 37.5 5.5 694.5
61 153 48 33 40.5 8.5 703
62 154 44 35 39.5 7.5 710.563 155 46 37 41.5 9.5 72064 156 46 29 37.5 5.5 725.565 157 46 29 37.5 5.5 731
66 158 45 27 36 4 73567 159 46 28 37 5 74068 160 52 25 38.5 6.5 746.569 161 49 26 37.5 5.5 752
70 162 49 28 38.5 6.5 758.571 163 47 26 36.5 4.5 76372 164 51 28 39.5 7.5 770.573 165 51 31 41 9 779.574 166 42 22 32 0 779.575 167 41 21 31 -1 778.576 168 49 21 35 3 781.577 169 54 24 39 7 788.578 170 54 27 40.5 8.5 79779 171 61 24 42.5 10.5 807.580 172 58 29 43.5 11.5 81981 173 63 32 47.5 15.5 834.582 174 54 31 42.5 10.5 845
83 175 59 34 46.5 14.5 859.584 176 61 36 48.5 16.5 87685 177 48 34 41 9 88586 178 62 34 48 16 901
87 179 46 25 35.5 3.5 904.588 180 46 23 34.5 2.5 90789 181 54 21 37.5 5.5 912.590 182 42 22 32 0 912.5
91 183 42 25 33.5 1.5 91492 184 49 25 37 5 91993 185 61 37 49 17 93694 186 51 39 45 13 949
95 187 40 29 34.5 2.5 951.596 188 50 32 41 9 960.597 189 53 25 39 7 967.598 190 42 18 30 -2 965.599 191 38 12 25 -7 958.5100 192 54 13 33.5 1.5 960101 193 40 19 29.5 -2.5 957.5102 194 42 28 35 3 960.5103 195 58 28 43 11 971.5104 196 36 27 31.5 -0.5 971105 197 37 28 32.5 0.5 971.5106 198 60 26 43 11 982.5107 199 48 35 41.5 9.5 992
108 200 50 30 40 8 1000109 201 62 27 44.5 12.5 1012.5110 202 60 24 42 10 1022.5111 203 54 45 49.5 17.5 1040
112 204 52 29 40.5 8.5 1048.5113 205 41 26 33.5 1.5 1050114 206 62 28 45 13 1063115 207 48 30 39 7 1070
116 208 46 30 38 6 1076117 209 46 38 42 10 1086118 210 52 35 43.5 11.5 1097.5119 211 70 44 57 25 1122.5
120 212 M 44 - - 1122.5121 213 M 45 - - 1122.5122 214 M 42 - - 1122.5123 215 M 42 - - 1122.5124 216 M 38 - - 1122.5125 217 M 43 - - 1122.5126 218 74 43 58.5 26.5 1149127 219 77 43 60 28 1177128 220 77 52 64.5 32.5 1209.5129 221 77 42 59.5 27.5 1237130 222 70 46 58 26 1263131 223 M 42 - - 1263132 224 M 40 - - 1263
133 225 M 40 - - 1263134 226 M 33 - - 1263135 227 M 30 - - 1263136 228 M 41 - - 1263
137 229 M 40 - - 1263138 230 62 32 47 15 1278139 231 71 42 56.5 24.5 1302.5140 232 72 40 56 24 1326.5
141 233 73 42 57.5 25.5 1352142 234 80 45 62.5 30.5 1382.5143 235 80 48 64 32 1414.5144 236 78 47 62.5 30.5 1445
145 237 73 48 60.5 28.5 1473.5146 238 82 45 63.5 31.5 1505147 239 86 48 67 35 1540148 240 85 47 66 34 1574149 241 87 46 66.5 34.5 1608.5150 242 89 47 68 36 1644.5151 243 84 48 66 34 1678.5152 244 89 44 66.5 34.5 1713153 245 89 47 68 36 1749154 246 89 48 68.5 36.5 1785.5155 247 88 53 70.5 38.5 1824156 248 74 42 58 26 1850157 249 83 48 65.5 33.5 1883.5
158 250 83 48 65.5 33.5 1917159 251 91 64 77.5 45.5 1962.5160 252 88 53 70.5 38.5 2001161 253 86 62 74 42 2043
162 254 90 70 80 48 2091163 255 79 51 65 33 2124164 256 65 42 53.5 21.5 2145.5165 257 64 40 52 20 2165.5
166 258 71 38 54.5 22.5 2188167 259 79 45 62 30 2218168 260 86 44 65 33 2251169 261 88 44 66 34 2285
170 262 83 42 62.5 30.5 2315.5
171 263 78 45 61.5 29.5 2345172 264 80 50 65 33 2378173 265 82 42 62 30 2408174 266 84 48 66 34 2442
175 267 88 57 72.5 40.5 2482.5176 268 90 49 69.5 37.5 2520177 269 91 49 70 38 2558178 270 92 50 71 39 2597
179 271 92 47 69.5 37.5 2634.5180 272 89 47 68 36 2670.5181 273 90 46 68 36 2706.5182 274 85 49 67 35 2741.5183 275 88 47 67.5 35.5 2777184 276 90 48 69 37 2814185 277 91 48 69.5 37.5 2851.5186 278 92 48 70 38 2889.5187 279 94 47 70.5 38.5 2928188 280 93 51 72 40 2968189 281 88 50 69 37 3005190 282 94 44 69 37 3042191 283 86 50 68 36 3078
192 284 91 59 75 43 3121193 285 95 58 76.5 44.5 3165.5194 286 93 57 75 43 3208.5195 287 92 54 73 41 3249.5
196 288 90 54 72 40 3289.5197 289 95 56 75.5 43.5 3333198 290 89 59 74 42 3375199 291 92 55 73.5 41.5 3416.5
200 292 92 56 74 42 3458.5201 293 94 55 74.5 42.5 3501202 294 82 62 72 40 3541203 295 89 50 69.5 37.5 3578.5
204 296 92 51 71.5 39.5 3618205 297 89 53 71 39 3657206 298 88 54 71 39 3696207 299 89 52 70.5 38.5 3734.5208 300 84 52 68 36 3770.5209 301 95 61 78 46 3816.5210 302 95 56 75.5 43.5 3860211 303 94 53 73.5 41.5 3901.5212 304 95 56 75.5 43.5 3945213 305 94 63 78.5 46.5 3991.5214 306 90 63 76.5 44.5 4036215 307 92 53 72.5 40.5 4076.5216 308 82 49 65.5 33.5 4110
217 309 81 48 64.5 32.5 4142.5218 310 82 44 63 31 4173.5219 311 83 48 65.5 33.5 4207220 312 86 54 70 38 4245
221 313 92 54 73 41 4286222 314 92 53 72.5 40.5 4326.5223 315 92 54 73 41 4367.5224 316 89 58 73.5 41.5 4409
225 317 92 54 73 41 4450226 318 93 51 72 40 4490227 319 91 55 73 41 4531228 320 90 58 74 42 4573
229 321 88 53 70.5 38.5 4611.5230 322 92 54 73 41 4652.5231 323 94 53 73.5 41.5 4694232 324 96 53 74.5 42.5 4736.5233 325 95 56 75.5 43.5 4780234 326 96 55 75.5 43.5 4823.5235 327 94 55 74.5 42.5 4866236 328 84 45 64.5 32.5 4898.5237 329 89 46 67.5 35.5 4934238 330 79 55 67 35 4969239 331 75 45 60 28 4997240 332 81 49 65 33 5030241 333 88 50 69 37 5067
242 334 89 54 71.5 39.5 5106.5243 335 72 58 65 33 5139.5244 336 79 48 63.5 31.5 5171245 337 88 53 70.5 38.5 5209.5
246 338 88 49 68.5 36.5 5246247 339 89 45 67 35 5281248 340 91 48 69.5 37.5 5318.5249 341 90 49 69.5 37.5 5356
250 342 89 51 70 38 5394251 343 91 49 70 38 5432252 344 92 51 71.5 39.5 5471.5253 345 90 48 69 37 5508.5
254 346 84 52 68 36 5544.5255 347 83 41 62 30 5574.5256 348 83 39 61 29 5603.5257 349 84 36 60 28 5631.5258 350 80 44 62 30 5661.5259 351 89 42 65.5 33.5 5695260 352 88 53 70.5 38.5 5733.5261 353 93 51 72 40 5773.5262 354 90 50 70 38 5811.5263 355 88 49 68.5 36.5 5848264 356 92 50 71 39 5887265 357 79 50 64.5 32.5 5919.5266 358 84 43 63.5 31.5 5951
267 359 83 42 62.5 30.5 5981.5268 360 82 40 61 29 6010.5 68 1010.5 length of freeze (day) 81
269 361 87 40 63.5 31.5 6042 149 676 frost depth (oF-day)334.5270 362 85 45 65 33 6075 average temperature 49.6271 363 81 44 62.5 30.5 6105.5
272 364 78 52 65 33 6138.5273 365 81 44 62.5 30.5 6169274 366 80 45 62.5 30.5 6199.5
1928-1929 day of frost year degree cumulative
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day of frost year
Blanding, UT
1927-1928
day of year (consecutive date) max. temp. min. temp avg. temp day (
oF) degree day (
oF)274 1 79 42 60.5 28.5 28.5
275 2 81 51 66 34 62.5276 3 84 42 63 31 93.5277 4 84 41 62.5 30.5 124278 5 82 47 64.5 32.5 156.5
279 6 80 31 55.5 23.5 180280 7 86 42 64 32 212281 8 85 40 62.5 30.5 242.5282 9 84 43 63.5 31.5 274283 10 86 40 63 31 305284 11 80 53 66.5 34.5 339.5285 12 M 46 - - 339.5286 13 70 36 53 21 360.5287 14 74 30 52 20 380.5288 15 49 32 40.5 8.5 389289 16 57 31 44 12 401290 17 62 29 45.5 13.5 414.5291 18 65 33 49 17 431.5
292 19 66 30 48 16 447.5293 20 70 35 52.5 20.5 468294 21 68 28 48 16 484295 22 72 31 51.5 19.5 503.5
296 23 70 28 49 17 520.5297 24 68 32 50 18 538.5298 25 69 39 54 22 560.5299 26 72 34 53 21 581.5
300 27 66 34 50 18 599.5301 28 71 33 52 20 619.5302 29 70 36 53 21 640.5303 30 75 41 58 26 666.5
304 31 54 34 44 12 678.5305 32 52 31 41.5 9.5 688306 33 50 28 39 7 695307 34 46 26 36 4 699308 35 57 27 42 10 709309 36 54 29 41.5 9.5 718.5310 37 60 32 46 14 732.5311 38 60 31 45.5 13.5 746312 39 64 34 49 17 763313 40 64 24 44 12 775314 41 62 25 43.5 11.5 786.5315 42 62 34 48 16 802.5316 43 63 27 45 13 815.5
317 44 55 38 46.5 14.5 830318 45 48 26 37 5 835319 46 47 29 38 6 841320 47 50 27 38.5 6.5 847.5
321 48 38 21 29.5 -2.5 845322 49 38 24 31 -1 844323 50 42 14 28 -4 840324 51 48 18 33 1 841
325 52 50 20 35 3 844326 53 58 23 40.5 8.5 852.5327 54 56 29 42.5 10.5 863328 55 52 24 38 6 869
329 56 56 27 41.5 9.5 878.5330 57 42 33 37.5 5.5 884331 58 40 32 36 4 888332 59 37 25 31 -1 887333 60 38 12 25 -7 880334 61 33 11 22 -10 870335 62 33 25 29 -3 867336 63 36 15 25.5 -6.5 860.5337 64 32 26 29 -3 857.5338 65 44 16 30 -2 855.5339 66 44 13 28.5 -3.5 852340 67 44 9 26.5 -5.5 846.5341 68 46 13 29.5 -2.5 844
342 69 45 13 29 -3 841343 70 39 14 26.5 -5.5 835.5344 71 38 13 25.5 -6.5 829345 72 42 20 31 -1 828
346 73 39 16 27.5 -4.5 823.5347 74 40 20 30 -2 821.5348 75 37 25 31 -1 820.5349 76 35 17 26 -6 814.5
350 77 35 15 25 -7 807.5351 78 36 0 18 -14 793.5352 79 30 -2 14 -18 775.5353 80 31 0 15.5 -16.5 759
354 81 31 2 16.5 -15.5 743.5355 82 42 4 23 -9 734.5356 83 34 7 20.5 -11.5 723357 84 35 8 21.5 -10.5 712.5358 85 39 7 23 -9 703.5359 86 38 5 21.5 -10.5 693360 87 46 14 30 -2 691361 88 53 6 29.5 -2.5 688.5362 89 42 29 35.5 3.5 692363 90 42 20 31 -1 691364 91 38 13 25.5 -6.5 684.5365 92 36 12 24 -8 676.51 93 30 8 19 -13 663.5
2 94 33 8 20.5 -11.5 6523 95 28 14 21 -11 6414 96 34 20 27 -5 6365 97 30 -1 14.5 -17.5 618.5
6 98 32 -2 15 -17 601.57 99 38 0 19 -13 588.58 100 46 10 28 -4 584.59 101 37 9 23 -9 575.5
10 102 43 20 31.5 -0.5 57511 103 45 10 27.5 -4.5 570.512 104 42 14 28 -4 566.513 105 47 9 28 -4 562.5
14 106 44 15 29.5 -2.5 56015 107 42 12 27 -5 55516 108 41 20 30.5 -1.5 553.5
17 109 36 12 24 -8 545.5
18 110 32 13 22.5 -9.5 53619 111 38 22 30 -2 53420 112 38 25 31.5 -0.5 533.521 113 37 20 28.5 -3.5 530
22 114 30 2 16 -16 51423 115 28 9 18.5 -13.5 500.524 116 23 -6 8.5 -23.5 47725 117 32 6 19 -13 464
26 118 29 7 18 -14 45027 119 31 1 16 -16 43428 120 43 9 26 -6 42829 121 43 18 30.5 -1.5 426.530 122 47 16 31.5 -0.5 42631 123 46 25 35.5 3.5 429.532 124 40 28 34 2 431.533 125 43 31 37 5 436.534 126 45 28 36.5 4.5 44135 127 44 22 33 1 44236 128 39 12 25.5 -6.5 435.537 129 36 20 28 -4 431.538 130 30 18 24 -8 423.5
39 131 21 2 11.5 -20.5 40340 132 24 -14 5 -27 37641 133 35 -8 13.5 -18.5 357.542 134 34 -5 14.5 -17.5 340
43 135 33 -2 15.5 -16.5 323.544 136 41 3 22 -10 313.545 137 30 7 18.5 -13.5 30046 138 37 5 21 -11 289
47 139 37 5 21 -11 27848 140 41 6 23.5 -8.5 269.549 141 45 18 31.5 -0.5 26950 142 39 13 26 -6 263
51 143 44 11 27.5 -4.5 258.552 144 45 15 30 -2 256.553 145 43 12 27.5 -4.5 25254 146 45 19 32 0 25255 147 40 24 32 0 25256 148 34 16 25 -7 24557 149 37 9 23 -9 23658 150 36 13 24.5 -7.5 228.559 151 32 15 23.5 -8.5 22060 152 40 4 22 -10 21061 153 38 20 29 -3 20762 154 43 20 31.5 -0.5 206.563 155 41 20 30.5 -1.5 205
64 156 60 23 41.5 9.5 214.565 157 56 26 41 9 223.566 158 56 33 44.5 12.5 23667 159 55 32 43.5 11.5 247.5
68 160 53 32 42.5 10.5 25869 161 52 34 43 11 26970 162 51 27 39 7 27671 163 50 26 38 6 282
72 164 39 11 25 -7 27573 165 42 20 31 -1 27474 166 45 19 32 0 27475 167 46 20 33 1 275
76 168 52 23 37.5 5.5 280.577 169 54 25 39.5 7.5 28878 170 53 32 42.5 10.5 298.579 171 59 28 43.5 11.5 31080 172 60 30 45 13 32381 173 61 37 49 17 34082 174 50 38 44 12 35283 175 43 25 34 2 35484 176 41 20 30.5 -1.5 352.585 177 46 25 35.5 3.5 35686 178 52 26 39 7 36387 179 60 28 44 12 37588 180 66 30 48 16 391
89 181 63 31 47 15 40690 182 56 29 42.5 10.5 416.591 183 58 20 39 7 423.592 184 62 27 44.5 12.5 436
93 185 64 35 49.5 17.5 453.594 186 63 45 54 22 475.595 187 50 34 42 10 485.596 188 58 17 37.5 5.5 491
97 189 62 25 43.5 11.5 502.598 190 60 30 45 13 515.599 191 54 27 40.5 8.5 524100 192 46 13 29.5 -2.5 521.5
101 193 54 19 36.5 4.5 526102 194 65 24 44.5 12.5 538.5103 195 68 55 61.5 29.5 568104 196 67 31 49 17 585105 197 67 34 50.5 18.5 603.5106 198 73 41 57 25 628.5107 199 73 34 53.5 21.5 650108 200 67 35 51 19 669109 201 60 35 47.5 15.5 684.5110 202 68 27 47.5 15.5 700111 203 75 35 55 23 723112 204 77 30 53.5 21.5 744.5113 205 60 36 48 16 760.5
114 206 55 30 42.5 10.5 771115 207 58 38 48 16 787116 208 59 27 43 11 798117 209 58 32 45 13 811
118 210 55 30 42.5 10.5 821.5119 211 M 34 - #VALUE! 821.5120 212 M M - - 821.5121 213 M 28 - - 821.5
122 214 63 28 45.5 13.5 835123 215 M 31 - - 835124 216 M 35 - - 835125 217 M 37 - - 835
126 218 M 36 - #VALUE! 835
127 219 M 36 - #VALUE! 835128 220 M 35 - #VALUE! 835129 221 M 35 - #VALUE! 835130 222 M 45 - #VALUE! 835
131 223 M 38 - - 835132 224 M 46 - - 835133 225 M 38 - - 835134 226 M 41 - - 835
135 227 M 50 - - 835136 228 M 45 - - 835137 229 75 40 - - 835138 230 70 45 57.5 25.5 860.5139 231 75 39 57 25 885.5140 232 69 49 59 27 912.5141 233 70 40 55 23 935.5142 234 69 41 55 23 958.5143 235 64 45 54.5 22.5 981144 236 72 42 57 25 1006145 237 78 45 61.5 29.5 1035.5146 238 75 48 61.5 29.5 1065147 239 58 32 45 13 1078
148 240 55 34 44.5 12.5 1090.5149 241 66 35 50.5 18.5 1109150 242 78 42 60 28 1137151 243 77 45 61 29 1166
152 244 76 36 56 24 1190153 245 75 36 55.5 23.5 1213.5154 246 77 37 57 25 1238.5155 247 76 36 56 24 1262.5
156 248 74 45 59.5 27.5 1290157 249 72 41 56.5 24.5 1314.5158 250 75 44 59.5 27.5 1342159 251 77 41 59 27 1369
160 252 79 44 61.5 29.5 1398.5161 253 80 41 60.5 28.5 1427162 254 79 37 58 26 1453163 255 74 44 59 27 1480164 256 79 45 62 30 1510165 257 85 44 64.5 32.5 1542.5166 258 79 53 66 34 1576.5167 259 77 52 64.5 32.5 1609168 260 79 34 56.5 24.5 1633.5169 261 86 41 63.5 31.5 1665170 262 84 46 65 33 1698171 263 85 41 63 31 1729172 264 87 49 68 36 1765
173 265 84 50 67 35 1800174 266 91 51 71 39 1839175 267 89 49 69 37 1876176 268 91 49 70 38 1914
177 269 93 49 71 39 1953178 270 89 48 68.5 36.5 1989.5179 271 96 57 76.5 44.5 2034180 272 94 61 77.5 45.5 2079.5
181 273 90 62 76 44 2123.5182 274 90 56 73 41 2164.5183 275 91 53 72 40 2204.5184 276 91 54 72.5 40.5 2245
185 277 90 55 72.5 40.5 2285.5186 278 92 54 73 41 2326.5187 279 90 56 73 41 2367.5188 280 91 54 72.5 40.5 2408189 281 88 60 74 42 2450190 282 81 57 69 37 2487191 283 80 53 66.5 34.5 2521.5192 284 83 53 68 36 2557.5193 285 76 58 67 35 2592.5194 286 80 55 67.5 35.5 2628195 287 85 56 70.5 38.5 2666.5196 288 90 60 75 43 2709.5197 289 90 60 75 43 2752.5
198 290 88 59 73.5 41.5 2794199 291 89 60 74.5 42.5 2836.5200 292 87 59 73 41 2877.5201 293 88 57 72.5 40.5 2918
202 294 90 65 77.5 45.5 2963.5203 295 88 59 73.5 41.5 3005204 296 83 59 71 39 3044205 297 91 60 75.5 43.5 3087.5
206 298 89 60 74.5 42.5 3130207 299 89 63 76 44 3174208 300 86 58 72 40 3214209 301 74 56 65 33 3247
210 302 81 55 68 36 3283211 303 79 58 68.5 36.5 3319.5212 304 80 60 70 38 3357.5213 305 82 59 70.5 38.5 3396214 306 80 52 66 34 3430215 307 83 60 71.5 39.5 3469.5216 308 78 55 66.5 34.5 3504217 309 72 57 64.5 32.5 3536.5218 310 73 57 65 33 3569.5219 311 82 52 67 35 3604.5220 312 82 53 67.5 35.5 3640221 313 80 52 66 34 3674222 314 78 57 67.5 35.5 3709.5
223 315 81 51 66 34 3743.5224 316 85 50 67.5 35.5 3779225 317 88 52 70 38 3817226 318 87 53 70 38 3855
227 319 88 53 70.5 38.5 3893.5228 320 88 57 72.5 40.5 3934229 321 87 57 72 40 3974230 322 85 55 70 38 4012
231 323 88 55 71.5 39.5 4051.5232 324 88 52 70 38 4089.5233 325 84 59 71.5 39.5 4129234 326 85 52 68.5 36.5 4165.5
235 327 84 54 69 37 4202.5
236 328 83 54 68.5 36.5 4239237 329 89 54 71.5 39.5 4278.5238 330 87 58 72.5 40.5 4319239 331 84 57 70.5 38.5 4357.5
240 332 88 56 72 40 4397.5241 333 89 58 73.5 41.5 4439242 334 84 58 71 39 4478243 335 88 55 71.5 39.5 4517.5
244 336 85 57 71 39 4556.5245 337 82 54 68 36 4592.5246 338 74 52 63 31 4623.5247 339 69 48 58.5 26.5 4650248 340 71 45 58 26 4676249 341 68 45 56.5 24.5 4700.5250 342 70 45 57.5 25.5 4726251 343 65 43 54 22 4748252 344 66 34 50 18 4766253 345 68 35 51.5 19.5 4785.5254 346 70 38 54 22 4807.5255 347 76 40 58 26 4833.5256 348 77 40 58.5 26.5 4860
257 349 80 42 61 29 4889258 350 80 45 62.5 30.5 4919.5259 351 77 46 61.5 29.5 4949260 352 73 48 60.5 28.5 4977.5
261 353 69 51 60 28 5005.5262 354 78 46 62 30 5035.5263 355 75 52 63.5 31.5 5067264 356 72 56 64 32 5099 59 887 length of freeze (day) 96265 357 73 52 62.5 30.5 5129.5 155 205 frost depth (oF-day)682
266 358 70 47 58.5 26.5 5156 average temperature 47.3267 359 73 41 57 25 5181268 360 74 44 59 27 5208269 361 72 43 57.5 25.5 5233.5270 362 74 44 59 27 5260.5271 363 77 45 61 29 5289.5272 364 75 45 60 28 5317.5273 365 73 45 59 27 5344.5
1929-1930 day of frost year degree cumulative
day of year (consecutive date) max. temp. min. temp avg. temp day (
oF) degree day (
oF)274 1 75 35 55 23 23
275 2 79 37 58 26 49276 3 79 36 57.5 25.5 74.5277 4 79 33 56 24 98.5278 5 80 40 60 28 126.5
279 6 76 39 57.5 25.5 152280 7 74 45 59.5 27.5 179.5281 8 78 36 57 25 204.5282 9 72 34 53 21 225.5
283 10 74 37 55.5 23.5 249284 11 77 40 58.5 26.5 275.5285 12 73 36 54.5 22.5 298286 13 71 59 65 33 331287 14 70 40 55 23 354288 15 67 41 54 22 376289 16 66 45 55.5 23.5 399.5290 17 65 35 50 18 417.5291 18 67 36 51.5 19.5 437292 19 72 42 57 25 462293 20 74 39 56.5 24.5 486.5294 21 72 33 52.5 20.5 507295 22 59 42 50.5 18.5 525.5
296 23 56 41 48.5 16.5 542297 24 54 21 37.5 5.5 547.5298 25 58 21 39.5 7.5 555299 26 62 29 45.5 13.5 568.5
300 27 62 25 43.5 11.5 580301 28 57 33 45 13 593302 29 48 22 35 3 596303 30 42 27 34.5 2.5 598.5
304 31 46 15 30.5 -1.5 597305 32 46 15 30.5 -1.5 595.5306 33 49 15 32 0 595.5307 34 57 23 40 8 603.5
308 35 56 19 37.5 5.5 609309 36 60 23 41.5 9.5 618.5310 37 58 23 40.5 8.5 627311 38 59 23 41 9 636312 39 54 20 37 5 641313 40 50 17 33.5 1.5 642.5314 41 46 20 33 1 643.5315 42 31 11 21 -11 632.5316 43 43 11 27 -5 627.5317 44 54 12 33 1 628.5318 45 60 20 40 8 636.5319 46 65 27 46 14 650.5320 47 60 23 41.5 9.5 660
321 48 60 27 43.5 11.5 671.5322 49 60 22 41 9 680.5323 50 53 17 35 3 683.5324 51 42 10 26 -6 677.5
325 52 43 13 28 -4 673.5326 53 43 20 31.5 -0.5 673327 54 41 5 23 -9 664328 55 43 10 26.5 -5.5 658.5
329 56 50 17 33.5 1.5 660330 57 55 18 36.5 4.5 664.5331 58 57 20 38.5 6.5 671332 59 49 19 34 2 673
333 60 62 22 42 10 683334 61 56 23 39.5 7.5 690.5335 62 63 25 44 12 702.5336 63 64 27 45.5 13.5 716337 64 65 24 44.5 12.5 728.5338 65 57 14 35.5 3.5 732
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0 50 100 150 200
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day of frost year
Blanding, UT
1928-1929
339 66 56 18 37 5 737
340 67 52 20 36 4 741341 68 57 19 38 6 747342 69 48 15 31.5 -0.5 746.5343 70 49 18 33.5 1.5 748
344 71 52 23 37.5 5.5 753.5345 72 54 29 41.5 9.5 763346 73 52 21 36.5 4.5 767.5347 74 55 19 37 5 772.5
348 75 55 20 37.5 5.5 778349 76 53 16 34.5 2.5 780.5350 77 35 20 27.5 -4.5 776351 78 46 21 33.5 1.5 777.5352 79 48 11 29.5 -2.5 775353 80 35 15 25 -7 768354 81 37 9 23 -9 759355 82 32 4 18 -14 745356 83 33 5 19 -13 732357 84 33 5 19 -13 719358 85 44 10 27 -5 714359 86 42 10 26 -6 708360 87 47 15 31 -1 707
361 88 43 8 25.5 -6.5 700.5362 89 45 11 28 -4 696.5363 90 46 13 29.5 -2.5 694364 91 46 12 29 -3 691
365 92 44 15 29.5 -2.5 688.51 93 38 9 23.5 -8.5 6802 94 45 10 27.5 -4.5 675.53 95 45 10 27.5 -4.5 671
4 96 45 14 29.5 -2.5 668.55 97 41 26 33.5 1.5 6706 98 40 19 29.5 -2.5 667.57 99 35 19 27 -5 662.5
8 100 34 10 22 -10 652.59 101 32 5 18.5 -13.5 63910 102 35 9 22 -10 62911 103 42 20 31 -1 62812 104 27 20 23.5 -8.5 619.513 105 27 18 22.5 -9.5 61014 106 23 4 13.5 -18.5 591.515 107 32 11 21.5 -10.5 58116 108 32 29 30.5 -1.5 579.517 109 34 1 17.5 -14.5 56518 110 22 0 11 -21 54419 111 27 12 19.5 -12.5 531.520 112 34 16 25 -7 524.5
21 113 24 -15 4.5 -27.5 49722 114 27 -13 7 -25 47223 115 25 -13 6 -26 44624 116 26 -6 10 -22 424
25 117 27 2 14.5 -17.5 406.526 118 33 21 27 -5 401.527 119 42 10 26 -6 395.528 120 38 7 22.5 -9.5 386
29 121 30 -5 12.5 -19.5 366.530 122 24 -5 9.5 -22.5 34431 123 29 0 14.5 -17.5 326.532 124 39 6 22.5 -9.5 317
33 125 35 7 21 -11 30634 126 37 10 23.5 -8.5 297.535 127 39 6 22.5 -9.5 28836 128 35 10 22.5 -9.5 278.537 129 40 10 25 -7 271.538 130 49 17 33 1 272.539 131 52 16 34 2 274.540 132 58 20 39 7 281.541 133 59 15 37 5 286.542 134 48 18 33 1 287.543 135 49 19 34 2 289.544 136 53 22 37.5 5.5 29545 137 51 24 37.5 5.5 300.5
46 138 56 23 39.5 7.5 30847 139 58 30 44 12 32048 140 58 27 42.5 10.5 330.549 141 56 30 43 11 341.5
50 142 56 30 43 11 352.551 143 48 30 39 7 359.552 144 55 25 40 8 367.553 145 53 30 41.5 9.5 377
54 146 48 34 41 9 38655 147 47 20 33.5 1.5 387.556 148 37 17 27 -5 382.557 149 46 21 33.5 1.5 384
58 150 48 22 35 3 38759 151 46 11 28.5 -3.5 383.560 152 37 13 25 -7 376.561 153 48 15 31.5 -0.5 37662 154 50 23 36.5 4.5 380.563 155 54 23 38.5 6.5 38764 156 52 28 40 8 39565 157 44 20 32 0 39566 158 45 21 33 1 39667 159 47 21 34 2 39868 160 53 24 38.5 6.5 404.569 161 50 20 35 3 407.570 162 53 29 41 9 416.5
71 163 57 20 38.5 6.5 42372 164 57 21 39 7 43073 165 51 24 37.5 5.5 435.574 166 60 24 42 10 445.5
75 167 54 31 42.5 10.5 45676 168 49 30 39.5 7.5 463.577 169 44 22 33 1 464.578 170 52 22 37 5 469.5
79 171 57 23 40 8 477.580 172 59 30 44.5 12.5 49081 173 63 23 43 11 50182 174 57 29 43 11 512
83 175 53 23 38 6 518
84 176 62 35 48.5 16.5 534.585 177 57 32 44.5 12.5 54786 178 52 22 37 5 55287 179 47 14 30.5 -1.5 550.5
88 180 54 21 37.5 5.5 55689 181 58 22 40 8 56490 182 54 33 43.5 11.5 575.591 183 48 35 41.5 9.5 585
92 184 57 30 43.5 11.5 596.593 185 60 31 45.5 13.5 61094 186 69 29 49 17 62795 187 75 39 57 25 65296 188 75 36 55.5 23.5 675.597 189 74 36 55 23 698.598 190 79 40 59.5 27.5 72699 191 70 50 60 28 754100 192 68 50 59 27 781101 193 68 41 54.5 22.5 803.5102 194 70 54 62 30 833.5103 195 67 37 52 20 853.5104 196 64 32 48 16 869.5
105 197 60 30 45 13 882.5106 198 67 30 48.5 16.5 899107 199 61 47 54 22 921108 200 67 28 47.5 15.5 936.5
109 201 72 30 51 19 955.5110 202 75 37 56 24 979.5111 203 79 38 58.5 26.5 1006112 204 78 40 59 27 1033
113 205 79 47 63 31 1064114 206 68 44 56 24 1088115 207 62 36 49 17 1105116 208 67 37 52 20 1125
117 209 65 40 52.5 20.5 1145.5118 210 65 39 52 20 1165.5119 211 63 33 48 16 1181.5120 212 65 37 51 19 1200.5121 213 69 33 51 19 1219.5122 214 72 38 55 23 1242.5123 215 65 38 51.5 19.5 1262124 216 57 41 49 17 1279125 217 54 28 41 9 1288126 218 57 28 42.5 10.5 1298.5127 219 53 36 44.5 12.5 1311128 220 48 25 36.5 4.5 1315.5129 221 48 25 36.5 4.5 1320
130 222 56 23 39.5 7.5 1327.5131 223 62 28 45 13 1340.5132 224 67 31 49 17 1357.5133 225 71 36 53.5 21.5 1379
134 226 75 38 56.5 24.5 1403.5135 227 73 36 54.5 22.5 1426136 228 66 37 51.5 19.5 1445.5137 229 58 33 45.5 13.5 1459
138 230 64 33 48.5 16.5 1475.5139 231 73 38 55.5 23.5 1499140 232 78 41 59.5 27.5 1526.5141 233 79 43 61 29 1555.5
142 234 78 29 53.5 21.5 1577143 235 75 37 56 24 1601144 236 78 46 62 30 1631145 237 80 43 61.5 29.5 1660.5146 238 83 42 62.5 30.5 1691147 239 81 45 63 31 1722148 240 81 40 60.5 28.5 1750.5149 241 80 34 57 25 1775.5150 242 75 47 61 29 1804.5151 243 76 49 62.5 30.5 1835152 244 68 31 49.5 17.5 1852.5153 245 71 34 52.5 20.5 1873154 246 72 36 54 22 1895
155 247 75 38 56.5 24.5 1919.5156 248 81 43 62 30 1949.5157 249 89 45 67 35 1984.5158 250 86 48 67 35 2019.5
159 251 87 49 68 36 2055.5160 252 85 55 70 38 2093.5161 253 83 56 69.5 37.5 2131162 254 86 47 66.5 34.5 2165.5
163 255 90 48 69 37 2202.5164 256 91 49 70 38 2240.5165 257 87 48 67.5 35.5 2276166 258 90 49 69.5 37.5 2313.5
167 259 90 53 71.5 39.5 2353168 260 88 52 70 38 2391169 261 82 52 67 35 2426170 262 75 43 59 27 2453171 263 84 48 66 34 2487172 264 78 57 67.5 35.5 2522.5173 265 81 42 61.5 29.5 2552174 266 81 41 61 29 2581175 267 82 39 60.5 28.5 2609.5176 268 85 43 64 32 2641.5177 269 88 45 66.5 34.5 2676178 270 90 47 68.5 36.5 2712.5179 271 89 52 70.5 38.5 2751
180 272 91 49 70 38 2789181 273 91 49 70 38 2827182 274 91 52 71.5 39.5 2866.5183 275 91 51 71 39 2905.5
184 276 94 51 72.5 40.5 2946185 277 94 52 73 41 2987186 278 91 58 74.5 42.5 3029.5187 279 92 58 75 43 3072.5
188 280 89 58 73.5 41.5 3114189 281 86 55 70.5 38.5 3152.5190 282 84 56 70 38 3190.5191 283 84 54 69 37 3227.5
192 284 81 53 67 35 3262.5
193 285 81 58 69.5 37.5 3300194 286 83 53 68 36 3336195 287 87 53 70 38 3374196 288 90 56 73 41 3415
197 289 89 58 73.5 41.5 3456.5198 290 87 57 72 40 3496.5199 291 85 57 71 39 3535.5200 292 75 58 66.5 34.5 3570
201 293 79 55 67 35 3605202 294 81 53 67 35 3640203 295 78 51 64.5 32.5 3672.5204 296 83 57 70 38 3710.5205 297 85 54 69.5 37.5 3748206 298 88 53 70.5 38.5 3786.5207 299 85 55 70 38 3824.5208 300 85 53 69 37 3861.5209 301 87 58 72.5 40.5 3902210 302 83 59 71 39 3941211 303 87 58 72.5 40.5 3981.5212 304 87 57 72 40 4021.5213 305 85 57 71 39 4060.5
214 306 87 59 73 41 4101.5215 307 86 56 71 39 4140.5216 308 89 55 72 40 4180.5217 309 93 54 73.5 41.5 4222
218 310 89 57 73 41 4263219 311 82 54 68 36 4299220 312 82 51 66.5 34.5 4333.5221 313 77 54 65.5 33.5 4367
222 314 81 55 68 36 4403223 315 77 55 66 34 4437224 316 79 49 64 32 4469225 317 80 51 65.5 33.5 4502.5
226 318 78 55 66.5 34.5 4537227 319 81 50 65.5 33.5 4570.5228 320 81 50 65.5 33.5 4604229 321 79 55 67 35 4639230 322 85 51 68 36 4675231 323 88 47 67.5 35.5 4710.5232 324 89 47 68 36 4746.5233 325 91 53 72 40 4786.5234 326 84 60 72 40 4826.5235 327 85 51 68 36 4862.5236 328 82 52 67 35 4897.5237 329 84 54 69 37 4934.5238 330 88 56 72 40 4974.5
239 331 87 56 71.5 39.5 5014240 332 88 52 70 38 5052241 333 89 56 72.5 40.5 5092.5242 334 88 50 69 37 5129.5
243 335 85 49 67 35 5164.5244 336 84 46 65 33 5197.5245 337 86 52 69 37 5234.5246 338 84 53 68.5 36.5 5271
247 339 84 53 68.5 36.5 5307.5248 340 80 52 66 34 5341.5249 341 75 48 61.5 29.5 5371250 342 66 47 56.5 24.5 5395.5
251 343 70 45 57.5 25.5 5421252 344 76 46 61 29 5450253 345 76 47 61.5 29.5 5479.5254 346 73 43 58 26 5505.5255 347 75 43 59 27 5532.5256 348 74 42 58 26 5558.5257 349 72 41 56.5 24.5 5583258 350 74 42 58 26 5609259 351 80 43 61.5 29.5 5638.5260 352 83 46 64.5 32.5 5671261 353 83 45 64 32 5703262 354 82 42 62 30 5733263 355 82 48 65 33 5766
264 356 80 49 64.5 32.5 5798.5265 357 74 45 59.5 27.5 5826266 358 68 36 52 20 5846267 359 67 38 52.5 20.5 5866.5
268 360 66 35 50.5 18.5 5885269 361 78 38 58 26 5911 76 780.5 length of freeze (day) 53
270 362 70 36 53 21 5932 129 271.5 frost depth (oF-day)509271 363 73 38 55.5 23.5 5955.5 average temperature 48.5272 364 74 39 56.5 24.5 5980
273 365 75 42 58.5 26.5 6006.5
1931-1932 day of frost year degree cumulativeday of year (consecutive date) max. temp. min. temp avg. temp day (
oF) degree day (oF)
274 1 78 45 61.5 29.5 29.5275 2 67 52 59.5 27.5 57276 3 66 45 55.5 23.5 80.5277 4 68 44 56 24 104.5
278 5 71 44 57.5 25.5 130279 6 72 45 58.5 26.5 156.5280 7 67 44 55.5 23.5 180281 8 72 46 59 27 207
282 9 71 48 59.5 27.5 234.5283 10 64 44 54 22 256.5284 11 64 38 51 19 275.5285 12 64 35 49.5 17.5 293
286 13 67 35 51 19 312287 14 69 35 52 20 332288 15 69 38 53.5 21.5 353.5289 16 72 37 54.5 22.5 376
290 17 72 39 55.5 23.5 399.5291 18 69 49 59 27 426.5292 19 62 44 53 21 447.5293 20 58 40 49 17 464.5294 21 52 39 45.5 13.5 478295 22 54 35 44.5 12.5 490.5
0
100
200
300
400
500
600
700
800
900
0 50 100 150 200
fr
e
e
z
e

i
n
d
e
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(
d
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g
r
e
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d
a
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day of frost year
Blanding, UT
1929-1930
296 23 60 35 47.5 15.5 506
297 24 65 36 50.5 18.5 524.5298 25 66 39 52.5 20.5 545299 26 60 40 50 18 563300 27 55 25 40 8 571
301 28 58 31 44.5 12.5 583.5302 29 55 40 47.5 15.5 599303 30 58 26 42 10 609304 31 61 27 44 12 621
305 32 69 32 50.5 18.5 639.5306 33 66 30 48 16 655.5307 34 66 31 48.5 16.5 672308 35 67 32 49.5 17.5 689.5309 36 67 31 49 17 706.5310 37 66 34 50 18 724.5311 38 62 32 47 15 739.5312 39 58 42 50 18 757.5313 40 52 39 45.5 13.5 771314 41 51 30 40.5 8.5 779.5315 42 45 35 40 8 787.5316 43 43 32 37.5 5.5 793317 44 46 33 39.5 7.5 800.5
318 45 45 26 35.5 3.5 804319 46 48 29 38.5 6.5 810.5320 47 45 35 40 8 818.5321 48 44 21 32.5 0.5 819
322 49 39 23 31 -1 818323 50 40 22 31 -1 817324 51 35 19 27 -5 812325 52 35 21 28 -4 808
326 53 25 20 22.5 -9.5 798.5327 54 21 -1 10 -22 776.5328 55 22 -6 8 -24 752.5329 56 32 -7 12.5 -19.5 733
330 57 28 14 21 -11 722331 58 38 14 26 -6 716332 59 43 23 33 1 717333 60 40 10 25 -7 710334 61 35 1 18 -14 696335 62 29 -4 12.5 -19.5 676.5336 63 19 4 11.5 -20.5 656337 64 17 4 10.5 -21.5 634.5338 65 20 9 14.5 -17.5 617339 66 19 2 10.5 -21.5 595.5340 67 22 -9 6.5 -25.5 570341 68 38 -3 17.5 -14.5 555.5342 69 31 10 20.5 -11.5 544
343 70 31 22 26.5 -5.5 538.5344 71 35 24 29.5 -2.5 536345 72 24 19 21.5 -10.5 525.5346 73 32 11 21.5 -10.5 515
347 74 21 -11 5 -27 488348 75 24 -11 6.5 -25.5 462.5349 76 28 -2 13 -19 443.5350 77 37 -3 17 -15 428.5
351 78 31 -2 14.5 -17.5 411352 79 32 3 17.5 -14.5 396.5353 80 32 2 17 -15 381.5354 81 38 5 21.5 -10.5 371
355 82 44 19 31.5 -0.5 370.5356 83 39 24 31.5 -0.5 370357 84 36 11 23.5 -8.5 361.5358 85 42 15 28.5 -3.5 358359 86 44 13 28.5 -3.5 354.5360 87 40 15 27.5 -4.5 350361 88 40 12 26 -6 344362 89 36 23 29.5 -2.5 341.5363 90 34 18 26 -6 335.5364 91 38 -1 18.5 -13.5 322365 92 36 -3 16.5 -15.5 306.51 93 38 -1 18.5 -13.5 2932 94 41 -1 20 -12 281
3 95 39 4 21.5 -10.5 270.54 96 34 10 22 -10 260.55 97 31 15 23 -9 251.56 98 36 4 20 -12 239.5
7 99 35 5 20 -12 227.58 100 35 10 22.5 -9.5 2189 101 37 8 22.5 -9.5 208.510 102 41 12 26.5 -5.5 203
11 103 37 12 24.5 -7.5 195.512 104 34 13 23.5 -8.5 18713 105 31 12 21.5 -10.5 176.514 106 24 4 14 -18 158.5
15 107 21 10 15.5 -16.5 14216 108 26 14 20 -12 13017 109 29 -1 14 -18 11218 110 29 1 15 -17 9519 111 38 4 21 -11 8420 112 28 11 19.5 -12.5 71.521 113 31 5 18 -14 57.522 114 31 -1 15 -17 40.523 115 26 -5 10.5 -21.5 1924 116 20 -5 7.5 -24.5 -5.525 117 31 -9 11 -21 -26.526 118 28 -5 11.5 -20.5 -4727 119 31 -1 15 -17 -64
28 120 24 4 14 -18 -8229 121 15 -12 1.5 -30.5 -112.530 122 28 -5 11.5 -20.5 -13331 123 37 9 23 -9 -142
32 124 38 19 28.5 -3.5 -145.533 125 35 26 30.5 -1.5 -14734 126 26 2 14 -18 -16535 127 32 -2 15 -17 -182
36 128 38 8 23 -9 -19137 129 47 20 33.5 1.5 -189.538 130 46 32 39 7 -182.539 131 44 26 35 3 -179.5
40 132 38 33 35.5 3.5 -176
41 133 44 32 38 6 -17042 134 40 18 29 -3 -17343 135 48 14 31 -1 -17444 136 55 18 36.5 4.5 -169.5
45 137 45 30 37.5 5.5 -16446 138 48 28 38 6 -15847 139 45 20 32.5 0.5 -157.548 140 45 18 31.5 -0.5 -158
49 141 45 24 34.5 2.5 -155.550 142 59 24 41.5 9.5 -14651 143 48 30 39 7 -13952 144 48 25 36.5 4.5 -134.553 145 55 20 37.5 5.5 -12954 146 55 20 37.5 5.5 -123.555 147 56 25 40.5 8.5 -11556 148 58 26 42 10 -10557 149 58 32 45 13 -9258 150 67 34 50.5 18.5 -73.559 151 62 31 46.5 14.5 -5960 152 55 33 44 12 -4761 153 46 35 40.5 8.5 -38.5
62 154 43 21 32 0 -38.563 155 38 27 32.5 0.5 -3864 156 37 18 27.5 -4.5 -42.565 157 47 18 32.5 0.5 -42
66 158 54 26 40 8 -3467 159 59 30 44.5 12.5 -21.568 160 58 32 45 13 -8.569 161 51 29 40 8 -0.5
70 162 46 32 39 7 6.571 163 45 25 35 3 9.572 164 41 27 34 2 11.573 165 49 15 32 0 11.5
74 166 52 23 37.5 5.5 1775 167 57 23 40 8 2576 168 53 27 40 8 3377 169 57 25 41 9 4278 170 63 27 45 13 5579 171 65 35 50 18 7380 172 37 35 36 4 7781 173 47 30 38.5 6.5 83.582 174 44 25 34.5 2.5 8683 175 51 28 39.5 7.5 93.584 176 61 29 45 13 106.585 177 58 35 46.5 14.5 12186 178 44 30 37 5 126
87 179 53 21 37 5 13188 180 58 25 41.5 9.5 140.589 181 52 32 42 10 150.590 182 56 25 40.5 8.5 159
91 183 65 26 45.5 13.5 172.592 184 68 30 49 17 189.593 185 67 37 52 20 209.594 186 65 34 49.5 17.5 227
95 187 M M - - 22796 188 M M - - 22797 189 63 36 49.5 17.5 244.598 190 62 28 45 13 257.5
99 191 57 21 39 7 264.5100 192 54 31 42.5 10.5 275101 193 62 27 44.5 12.5 287.5102 194 68 40 54 22 309.5103 195 71 34 52.5 20.5 330104 196 72 38 55 23 353105 197 65 40 52.5 20.5 373.5106 198 70 39 54.5 22.5 396107 199 73 42 57.5 25.5 421.5108 200 68 44 56 24 445.5109 201 66 42 54 22 467.5110 202 79 29 54 22 489.5111 203 66 48 57 25 514.5
112 204 60 33 46.5 14.5 529113 205 50 27 38.5 6.5 535.5114 206 52 24 38 6 541.5115 207 59 29 44 12 553.5
116 208 65 29 47 15 568.5117 209 60 40 50 18 586.5118 210 47 30 38.5 6.5 593119 211 48 22 35 3 596
120 212 58 30 44 12 608121 213 64 35 49.5 17.5 625.5122 214 71 38 54.5 22.5 648123 215 69 38 53.5 21.5 669.5
124 216 68 38 53 21 690.5125 217 69 38 53.5 21.5 712126 218 58 30 44 12 724127 219 56 29 42.5 10.5 734.5128 220 60 31 45.5 13.5 748129 221 68 31 49.5 17.5 765.5130 222 74 35 54.5 22.5 788131 223 62 41 51.5 19.5 807.5132 224 65 38 51.5 19.5 827133 225 71 42 56.5 24.5 851.5134 226 75 43 59 27 878.5135 227 71 43 57 25 903.5136 228 70 43 56.5 24.5 928
137 229 75 41 58 26 954138 230 78 50 64 32 986139 231 77 48 62.5 30.5 1016.5140 232 70 55 62.5 30.5 1047
141 233 74 35 54.5 22.5 1069.5142 234 80 46 63 31 1100.5143 235 70 45 57.5 25.5 1126144 236 68 33 50.5 18.5 1144.5
145 237 73 36 54.5 22.5 1167146 238 70 44 57 25 1192147 239 72 35 53.5 21.5 1213.5148 240 76 41 58.5 26.5 1240
149 241 75 43 59 27 1267
150 242 74 40 57 25 1292151 243 68 38 53 21 1313152 244 70 35 52.5 20.5 1333.5153 245 70 35 52.5 20.5 1354
154 246 73 37 55 23 1377155 247 74 43 58.5 26.5 1403.5156 248 63 47 55 23 1426.5157 249 69 36 52.5 20.5 1447
158 250 68 44 56 24 1471159 251 65 40 52.5 20.5 1491.5160 252 70 33 51.5 19.5 1511161 253 74 34 54 22 1533162 254 79 45 62 30 1563163 255 78 44 61 29 1592164 256 84 44 64 32 1624165 257 88 50 69 37 1661166 258 87 56 71.5 39.5 1700.5167 259 84 47 65.5 33.5 1734168 260 77 41 59 27 1761169 261 76 45 60.5 28.5 1789.5170 262 78 43 60.5 28.5 1818
171 263 81 46 63.5 31.5 1849.5172 264 85 51 68 36 1885.5173 265 88 56 72 40 1925.5174 266 88 61 74.5 42.5 1968
175 267 80 54 67 35 2003176 268 87 54 70.5 38.5 2041.5177 269 90 56 73 41 2082.5178 270 96 54 75 43 2125.5
179 271 90 56 73 41 2166.5180 272 87 56 71.5 39.5 2206181 273 90 59 74.5 42.5 2248.5182 274 86 59 72.5 40.5 2289
183 275 85 61 73 41 2330184 276 77 56 66.5 34.5 2364.5185 277 88 54 71 39 2403.5186 278 90 60 75 43 2446.5187 279 91 54 72.5 40.5 2487188 280 93 54 73.5 41.5 2528.5189 281 94 60 77 45 2573.5190 282 93 60 76.5 44.5 2618191 283 93 60 76.5 44.5 2662.5192 284 87 61 74 42 2704.5193 285 80 60 70 38 2742.5194 286 78 55 66.5 34.5 2777195 287 83 55 69 37 2814
196 288 82 51 66.5 34.5 2848.5197 289 88 59 73.5 41.5 2890198 290 87 57 72 40 2930199 291 86 57 71.5 39.5 2969.5
200 292 86 59 72.5 40.5 3010201 293 87 52 69.5 37.5 3047.5202 294 91 53 72 40 3087.5203 295 89 59 74 42 3129.5
204 296 89 58 73.5 41.5 3171205 297 90 58 74 42 3213206 298 88 57 72.5 40.5 3253.5207 299 90 57 73.5 41.5 3295
208 300 94 53 73.5 41.5 3336.5209 301 87 58 72.5 40.5 3377210 302 85 60 72.5 40.5 3417.5211 303 89 60 74.5 42.5 3460212 304 80 60 70 38 3498213 305 85 54 69.5 37.5 3535.5214 306 85 54 69.5 37.5 3573215 307 89 51 70 38 3611216 308 89 58 73.5 41.5 3652.5217 309 90 61 75.5 43.5 3696218 310 91 55 73 41 3737219 311 90 55 72.5 40.5 3777.5220 312 92 56 74 42 3819.5
221 313 90 56 73 41 3860.5222 314 90 55 72.5 40.5 3901223 315 81 61 71 39 3940224 316 87 50 68.5 36.5 3976.5
225 317 88 50 69 37 4013.5226 318 90 52 71 39 4052.5227 319 90 60 75 43 4095.5228 320 88 69 78.5 46.5 4142
229 321 92 57 74.5 42.5 4184.5230 322 90 61 75.5 43.5 4228231 323 85 61 73 41 4269232 324 86 56 71 39 4308
233 325 86 58 72 40 4348234 326 84 58 71 39 4387235 327 89 54 71.5 39.5 4426.5236 328 88 56 72 40 4466.5237 329 88 56 72 40 4506.5238 330 87 55 71 39 4545.5239 331 81 57 69 37 4582.5240 332 71 52 61.5 29.5 4612241 333 70 53 61.5 29.5 4641.5242 334 76 50 63 31 4672.5243 335 75 47 61 29 4701.5244 336 74 43 58.5 26.5 4728245 337 81 40 60.5 28.5 4756.5
246 338 81 45 63 31 4787.5247 339 86 45 65.5 33.5 4821248 340 85 47 66 34 4855249 341 89 47 68 36 4891
250 342 88 51 69.5 37.5 4928.5251 343 85 50 67.5 35.5 4964252 344 89 47 68 36 5000253 345 87 48 67.5 35.5 5035.5
254 346 84 39 61.5 29.5 5065255 347 M M - - 5065256 348 85 40 62.5 30.5 5095.5257 349 84 40 62 30 5125.5 400
600
800
1000
egr
e
e

F
-
d
a
y
)
Blanding, UT
258 350 84 40 62 30 5155.5
259 351 85 40 62.5 30.5 5186260 352 85 41 63 31 5217261 353 84 41 62.5 30.5 5247.5262 354 82 42 62 30 5277.5
263 355 81 43 62 30 5307.5264 356 79 43 61 29 5336.5265 357 80 43 61.5 29.5 5366266 358 88 44 66 34 5400
267 359 72 44 58 26 5426268 360 58 44 51 19 5445269 361 69 41 55 23 5468270 362 71 40 55.5 23.5 5491.5271 363 73 40 56.5 24.5 5516 49 818 length of freeze (day) 81272 364 72 49 60.5 28.5 5544.5 130 -189.5 frost depth (oF-day)1007.5273 365 70 49 59.5 27.5 5572 average temperature 47.3274 366 68 44 56 24 5596
1980-1981 day of frost year degree cumulative
day of year (consecutive date) max. temp. min. temp avg. temp day (
oF) degree day (
oF)274 1 87 47 67 35 35275 2 85 56 70.5 38.5 73.5
276 3 84 46 65 33 106.5277 4 82 43 62.5 30.5 137278 5 81 50 65.5 33.5 170.5279 6 80 48 64 32 202.5
280 7 82 45 63.5 31.5 234281 8 82 46 64 32 266282 9 82 45 63.5 31.5 297.5283 10 79 48 63.5 31.5 329284 11 77 41 59 27 356285 12 71 47 59 27 383286 13 65 43 54 22 405287 14 62 39 50.5 18.5 423.5288 15 44 31 37.5 5.5 429289 16 46 30 38 6 435290 17 51 25 38 6 441291 18 56 28 42 10 451292 19 61 33 47 15 466
293 20 63 31 47 15 481294 21 64 30 47 15 496295 22 64 31 47.5 15.5 511.5296 23 51 26 38.5 6.5 518
297 24 57 22 39.5 7.5 525.5298 25 63 26 44.5 12.5 538299 26 47 30 38.5 6.5 544.5300 27 44 33 38.5 6.5 551
301 28 51 25 38 6 557302 29 56 25 40.5 8.5 565.5303 30 59 25 42 10 575.5304 31 60 30 45 13 588.5
305 32 64 32 48 16 604.5306 33 66 31 48.5 16.5 621307 34 69 30 49.5 17.5 638.5308 35 72 30 51 19 657.5309 36 70 39 54.5 22.5 680310 37 66 35 50.5 18.5 698.5311 38 66 35 50.5 18.5 717312 39 67 34 50.5 18.5 735.5313 40 68 36 52 20 755.5314 41 68 39 53.5 21.5 777315 42 66 37 51.5 19.5 796.5316 43 63 39 51 19 815.5317 44 52 37 44.5 12.5 828
318 45 46 22 34 2 830319 46 45 17 31 -1 829320 47 42 23 32.5 0.5 829.5321 48 42 18 30 -2 827.5
322 49 45 14 29.5 -2.5 825323 50 47 16 31.5 -0.5 824.5324 51 50 20 35 3 827.5325 52 50 23 36.5 4.5 832
326 53 47 21 34 2 834327 54 47 24 35.5 3.5 837.5328 55 41 31 36 4 841.5329 56 46 22 34 2 843.5
330 57 47 18 32.5 0.5 844331 58 46 19 32.5 0.5 844.5332 59 56 25 40.5 8.5 853333 60 47 28 37.5 5.5 858.5334 61 51 32 41.5 9.5 868335 62 53 26 39.5 7.5 875.5336 63 53 26 39.5 7.5 883337 64 57 33 45 13 896338 65 55 30 42.5 10.5 906.5339 66 38 30 34 2 908.5340 67 41 32 36.5 4.5 913341 68 39 32 35.5 3.5 916.5342 69 42 25 33.5 1.5 918
343 70 42 19 30.5 -1.5 916.5344 71 45 17 31 -1 915.5345 72 52 20 36 4 919.5346 73 47 23 35 3 922.5
347 74 50 27 38.5 6.5 929348 75 56 28 42 10 939349 76 60 30 45 13 952350 77 63 31 47 15 967
351 78 61 28 44.5 12.5 979.5352 79 54 27 40.5 8.5 988353 80 52 27 39.5 7.5 995.5354 81 49 26 37.5 5.5 1001
355 82 49 27 38 6 1007356 83 52 28 40 8 1015357 84 48 29 38.5 6.5 1021.5358 85 50 25 37.5 5.5 1027359 86 54 26 40 8 1035360 87 58 31 44.5 12.5 1047.5
-400
-200
0
200
0 50 100 150 200fr
e
e
z
e

i
n
d
e
x

(
d
e
g
day of frost year
1931-1932
361 88 55 27 41 9 1056.5
362 89 52 32 42 10 1066.5363 90 59 32 45.5 13.5 1080364 91 54 28 41 9 1089365 92 53 30 41.5 9.5 1098.5
1 93 55 26 40.5 8.5 11072 94 55 31 43 11 11183 95 54 28 41 9 11274 96 54 32 43 11 1138
5 97 47 25 36 4 11426 98 49 20 34.5 2.5 1144.57 99 45 18 31.5 -0.5 11448 100 47 20 33.5 1.5 1145.59 101 50 20 35 3 1148.510 102 53 22 37.5 5.5 115411 103 51 24 37.5 5.5 1159.512 104 52 29 40.5 8.5 116813 105 59 27 43 11 117914 106 50 21 35.5 3.5 1182.515 107 48 23 35.5 3.5 118616 108 50 23 36.5 4.5 1190.517 109 47 25 36 4 1194.5
18 110 53 20 36.5 4.5 119919 111 54 25 39.5 7.5 1206.520 112 56 25 40.5 8.5 121521 113 58 24 41 9 1224
22 114 52 24 38 6 123023 115 52 23 37.5 5.5 1235.524 116 48 24 36 4 1239.525 117 45 19 32 0 1239.5
26 118 42 15 28.5 -3.5 123627 119 43 16 29.5 -2.5 1233.528 120 39 30 34.5 2.5 123629 121 42 20 31 -1 1235
30 122 34 20 27 -5 123031 123 33 13 23 -9 122132 124 38 16 27 -5 121633 125 44 13 28.5 -3.5 1212.534 126 48 18 33 1 1213.535 127 46 16 31 -1 1212.536 128 46 17 31.5 -0.5 121237 129 47 18 32.5 0.5 1212.538 130 49 21 35 3 1215.539 131 44 18 31 -1 1214.540 132 42 26 34 2 1216.541 133 34 13 23.5 -8.5 120842 134 40 11 25.5 -6.5 1201.5
43 135 52 20 36 4 1205.544 136 54 22 38 6 1211.545 137 56 26 41 9 1220.546 138 60 30 45 13 1233.5
47 139 60 29 44.5 12.5 124648 140 59 34 46.5 14.5 1260.549 141 63 30 46.5 14.5 127550 142 60 32 46 14 1289
51 143 58 28 43 11 130052 144 45 23 34 2 130253 145 56 20 38 6 130854 146 58 25 41.5 9.5 1317.5
55 147 56 28 42 10 1327.556 148 57 29 43 11 1338.557 149 59 28 43.5 11.5 135058 150 48 22 35 3 135359 151 55 22 38.5 6.5 1359.560 152 52 31 41.5 9.5 136961 153 41 32 36.5 4.5 1373.562 154 46 25 35.5 3.5 137763 155 47 21 34 2 137964 156 51 27 39 7 138665 157 41 27 34 2 138866 158 44 27 35.5 3.5 1391.567 159 51 26 38.5 6.5 1398
68 160 53 24 38.5 6.5 1404.569 161 53 30 41.5 9.5 141470 162 45 29 37 5 141971 163 50 26 38 6 1425
72 164 52 25 38.5 6.5 1431.573 165 45 31 38 6 1437.574 166 53 27 40 8 1445.575 167 54 30 42 10 1455.5
76 168 44 28 36 4 1459.577 169 50 20 35 3 1462.578 170 57 25 41 9 1471.579 171 49 32 40.5 8.5 1480
80 172 52 35 43.5 11.5 1491.581 173 58 35 46.5 14.5 150682 174 64 35 49.5 17.5 1523.583 175 57 36 46.5 14.5 153884 176 59 33 46 14 155285 177 64 33 48.5 16.5 1568.586 178 43 28 35.5 3.5 157287 179 43 29 36 4 157688 180 55 26 40.5 8.5 1584.589 181 48 31 39.5 7.5 159290 182 54 21 37.5 5.5 1597.591 183 63 29 46 14 1611.592 184 64 33 48.5 16.5 1628
93 185 43 28 35.5 3.5 1631.594 186 47 24 35.5 3.5 163595 187 58 23 40.5 8.5 1643.596 188 65 31 48 16 1659.5
97 189 66 34 50 18 1677.598 190 64 32 48 16 1693.599 191 69 33 51 19 1712.5100 192 71 36 53.5 21.5 1734
101 193 69 35 52 20 1754102 194 63 36 49.5 17.5 1771.5103 195 68 40 54 22 1793.5104 196 68 40 54 22 1815.5
105 197 61 39 50 18 1833.5
106 198 70 38 54 22 1855.5107 199 75 43 59 27 1882.5108 200 71 45 58 26 1908.5109 201 56 36 46 14 1922.5
110 202 61 36 48.5 16.5 1939111 203 68 34 51 19 1958112 204 69 40 54.5 22.5 1980.5113 205 76 39 57.5 25.5 2006
114 206 77 42 59.5 27.5 2033.5115 207 78 45 61.5 29.5 2063116 208 77 42 59.5 27.5 2090.5117 209 72 46 59 27 2117.5118 210 78 45 61.5 29.5 2147119 211 82 43 62.5 30.5 2177.5120 212 84 48 66 34 2211.5121 213 83 51 67 35 2246.5122 214 76 47 61.5 29.5 2276123 215 70 46 58 26 2302124 216 72 32 52 20 2322125 217 74 42 58 26 2348126 218 70 38 54 22 2370
127 219 64 29 46.5 14.5 2384.5128 220 63 35 49 17 2401.5129 221 67 33 50 18 2419.5130 222 71 38 54.5 22.5 2442
131 223 68 43 55.5 23.5 2465.5132 224 73 39 56 24 2489.5133 225 72 43 57.5 25.5 2515134 226 77 48 62.5 30.5 2545.5
135 227 66 41 53.5 21.5 2567136 228 50 38 44 12 2579137 229 58 32 45 13 2592138 230 70 36 53 21 2613
139 231 72 43 57.5 25.5 2638.5140 232 63 40 51.5 19.5 2658141 233 65 32 48.5 16.5 2674.5142 234 71 37 54 22 2696.5143 235 72 40 56 24 2720.5144 236 75 44 59.5 27.5 2748145 237 79 53 66 34 2782146 238 74 52 63 31 2813147 239 79 44 61.5 29.5 2842.5148 240 75 48 61.5 29.5 2872149 241 74 44 59 27 2899150 242 79 43 61 29 2928151 243 74 50 62 30 2958
152 244 80 45 62.5 30.5 2988.5153 245 81 49 65 33 3021.5154 246 72 48 60 28 3049.5155 247 80 44 62 30 3079.5
156 248 85 57 71 39 3118.5157 249 89 54 71.5 39.5 3158158 250 91 56 73.5 41.5 3199.5159 251 91 57 74 42 3241.5
160 252 91 55 73 41 3282.5161 253 92 56 74 42 3324.5162 254 90 56 73 41 3365.5163 255 87 49 68 36 3401.5
164 256 82 51 66.5 34.5 3436165 257 66 43 54.5 22.5 3458.5166 258 70 36 53 21 3479.5167 259 81 45 63 31 3510.5168 260 88 47 67.5 35.5 3546169 261 89 51 70 38 3584170 262 92 53 72.5 40.5 3624.5171 263 94 59 76.5 44.5 3669172 264 95 61 78 46 3715173 265 94 60 77 45 3760174 266 96 58 77 45 3805175 267 97 64 80.5 48.5 3853.5176 268 99 62 80.5 48.5 3902
177 269 97 62 79.5 47.5 3949.5178 270 95 56 75.5 43.5 3993179 271 94 56 75 43 4036180 272 89 56 72.5 40.5 4076.5
181 273 89 57 73 41 4117.5182 274 77 59 68 36 4153.5183 275 80 55 67.5 35.5 4189184 276 89 54 71.5 39.5 4228.5
185 277 91 63 77 45 4273.5186 278 98 66 82 50 4323.5187 279 98 60 79 47 4370.5188 280 93 62 77.5 45.5 4416
189 281 93 60 76.5 44.5 4460.5190 282 88 59 73.5 41.5 4502191 283 88 56 72 40 4542192 284 92 60 76 44 4586193 285 83 58 70.5 38.5 4624.5194 286 82 60 71 39 4663.5195 287 86 57 71.5 39.5 4703196 288 86 58 72 40 4743197 289 82 61 71.5 39.5 4782.5198 290 82 58 70 38 4820.5199 291 85 55 70 38 4858.5200 292 92 57 74.5 42.5 4901201 293 93 58 75.5 43.5 4944.5
202 294 94 65 79.5 47.5 4992203 295 89 67 78 46 5038204 296 90 62 76 44 5082205 297 88 59 73.5 41.5 5123.5
206 298 89 60 74.5 42.5 5166207 299 87 62 74.5 42.5 5208.5208 300 87 58 72.5 40.5 5249209 301 92 57 74.5 42.5 5291.5
210 302 91 57 74 42 5333.5211 303 90 61 75.5 43.5 5377212 304 93 60 76.5 44.5 5421.5213 305 86 61 73.5 41.5 5463
214 306 91 57 74 42 5505
215 307 92 58 75 43 5548216 308 92 60 76 44 5592217 309 96 57 76.5 44.5 5636.5218 310 97 57 77 45 5681.5
219 311 92 61 76.5 44.5 5726220 312 88 58 73 41 5767221 313 89 59 74 42 5809222 314 78 57 67.5 35.5 5844.5
223 315 71 55 63 31 5875.5224 316 72 53 62.5 30.5 5906225 317 78 52 65 33 5939226 318 79 51 65 33 5972227 319 87 55 71 39 6011228 320 85 54 69.5 37.5 6048.5229 321 86 53 69.5 37.5 6086230 322 88 55 71.5 39.5 6125.5231 323 89 55 72 40 6165.5232 324 86 56 71 39 6204.5233 325 84 63 73.5 41.5 6246234 326 83 56 69.5 37.5 6283.5235 327 89 54 71.5 39.5 6323
236 328 89 58 73.5 41.5 6364.5237 329 88 57 72.5 40.5 6405238 330 93 57 75 43 6448239 331 88 60 74 42 6490
240 332 88 56 72 40 6530241 333 85 55 70 38 6568242 334 89 56 72.5 40.5 6608.5243 335 79 56 67.5 35.5 6644
244 336 84 49 66.5 34.5 6678.5245 337 85 53 69 37 6715.5246 338 87 53 70 38 6753.5247 339 83 54 68.5 36.5 6790
248 340 69 52 60.5 28.5 6818.5249 341 70 51 60.5 28.5 6847250 342 77 51 64 32 6879251 343 80 53 66.5 34.5 6913.5252 344 78 51 64.5 32.5 6946253 345 67 49 58 26 6972254 346 75 46 60.5 28.5 7000.5255 347 75 49 62 30 7030.5256 348 82 49 65.5 33.5 7064257 349 81 50 65.5 33.5 7097.5258 350 83 52 67.5 35.5 7133259 351 82 49 65.5 33.5 7166.5260 352 83 49 66 34 7200.5
261 353 83 49 66 34 7234.5262 354 82 50 66 34 7268.5 117 1239.5 length of freeze (day) 19
263 355 82 49 65.5 33.5 7302 136 1211.5 frost depth (oF-day)28264 356 82 51 66.5 34.5 7336.5 average temperature 52.9265 357 80 49 64.5 32.5 7369
266 358 75 53 64 32 7401267 359 76 47 61.5 29.5 7430.5268 360 74 48 61 29 7459.5269 361 77 42 59.5 27.5 7487
270 362 80 44 62 30 7517271 363 81 47 64 32 7549272 364 79 52 65.5 33.5 7582.5273 365 77 48 62.5 30.5 7613
1981-1982 day of frost year degree cumulative
day of year (consecutive date) max. temp. min. temp avg. temp day (
oF) degree day (
oF)274 1 76 48 62 30 30
275 2 56 47 51.5 19.5 49.5276 3 59 45 52 20 69.5277 4 55 45 50 18 87.5278 5 66 43 54.5 22.5 110
279 6 71 43 57 25 135280 7 69 43 56 24 159281 8 68 44 56 24 183282 9 64 35 49.5 17.5 200.5
283 10 70 41 55.5 23.5 224284 11 63 45 54 22 246285 12 58 41 49.5 17.5 263.5286 13 58 35 46.5 14.5 278
287 14 59 31 45 13 291288 15 53 37 45 13 304289 16 48 28 38 6 310290 17 62 30 46 14 324291 18 65 40 52.5 20.5 344.5292 19 66 35 50.5 18.5 363293 20 64 33 48.5 16.5 379.5294 21 67 34 50.5 18.5 398295 22 66 35 50.5 18.5 416.5296 23 62 35 48.5 16.5 433297 24 56 33 44.5 12.5 445.5298 25 59 32 45.5 13.5 459299 26 61 29 45 13 472
300 27 62 37 49.5 17.5 489.5301 28 63 41 52 20 509.5302 29 57 41 49 17 526.5303 30 45 27 36 4 530.5
304 31 56 23 39.5 7.5 538305 32 64 30 47 15 553306 33 63 37 50 18 571307 34 62 31 46.5 14.5 585.5
308 35 63 31 47 15 600.5309 36 63 31 47 15 615.5310 37 62 30 46 14 629.5311 38 61 30 45.5 13.5 643
312 39 64 35 49.5 17.5 660.5313 40 59 31 45 13 673.5314 41 59 32 45.5 13.5 687315 42 58 32 45 13 700316 43 59 30 44.5 12.5 712.5317 44 59 34 46.5 14.5 727
0
200
400
600
800
1000
1200
1400
1600
1800
0 50 100 150 200
fr
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day of frost year
Blanding, UT
1980-1981
318 45 58 36 47 15 742
319 46 60 30 45 13 755320 47 63 33 48 16 771321 48 59 32 45.5 13.5 784.5322 49 48 28 38 6 790.5
323 50 52 22 37 5 795.5324 51 48 22 35 3 798.5325 52 54 25 39.5 7.5 806326 53 53 30 41.5 9.5 815.5
327 54 59 31 45 13 828.5328 55 60 32 46 14 842.5329 56 49 24 36.5 4.5 847330 57 38 14 26 -6 841331 58 38 20 29 -3 838332 59 40 16 28 -4 834333 60 36 28 32 0 834334 61 37 17 27 -5 829335 62 34 11 22.5 -9.5 819.5336 63 42 18 30 -2 817.5337 64 49 21 35 3 820.5338 65 49 24 36.5 4.5 825339 66 54 31 42.5 10.5 835.5
340 67 51 27 39 7 842.5341 68 53 28 40.5 8.5 851342 69 54 27 40.5 8.5 859.5343 70 55 27 41 9 868.5
344 71 48 32 40 8 876.5345 72 54 31 42.5 10.5 887346 73 47 26 36.5 4.5 891.5347 74 45 27 36 4 895.5
348 75 46 23 34.5 2.5 898349 76 48 25 36.5 4.5 902.5350 77 43 25 34 2 904.5351 78 42 20 31 -1 903.5
352 79 41 18 29.5 -2.5 901353 80 47 25 36 4 905354 81 50 25 37.5 5.5 910.5355 82 43 29 36 4 914.5356 83 38 18 28 -4 910.5357 84 35 10 22.5 -9.5 901358 85 31 8 19.5 -12.5 888.5359 86 37 21 29 -3 885.5360 87 35 13 24 -8 877.5361 88 39 19 29 -3 874.5362 89 37 13 25 -7 867.5363 90 45 22 33.5 1.5 869364 91 42 31 36.5 4.5 873.5
365 92 36 29 32.5 0.5 8741 93 41 28 34.5 2.5 876.52 94 33 10 21.5 -10.5 8663 95 31 6 18.5 -13.5 852.5
4 96 28 8 18 -14 838.55 97 32 23 27.5 -4.5 8346 98 36 13 24.5 -7.5 826.57 99 28 -1 13.5 -18.5 808
8 100 30 0 15 -17 7919 101 34 5 19.5 -12.5 778.510 102 39 10 24.5 -7.5 77111 103 31 15 23 -9 762
12 104 40 18 29 -3 75913 105 36 14 25 -7 75214 106 40 13 26.5 -5.5 746.515 107 40 15 27.5 -4.5 74216 108 43 19 31 -1 74117 109 45 19 32 0 74118 110 48 21 34.5 2.5 743.519 111 46 23 34.5 2.5 74620 112 37 17 27 -5 74121 113 35 22 28.5 -3.5 737.522 114 32 10 21 -11 726.523 115 35 7 21 -11 715.524 116 46 16 31 -1 714.5
25 117 51 25 38 6 720.526 118 53 22 37.5 5.5 72627 119 47 29 38 6 73228 120 48 28 38 6 738
29 121 41 28 34.5 2.5 740.530 122 48 21 34.5 2.5 74331 123 40 22 31 -1 74232 124 36 21 28.5 -3.5 738.5
33 125 34 17 25.5 -6.5 73234 126 30 18 24 -8 72435 127 30 11 20.5 -11.5 712.536 128 27 -1 13 -19 693.5
37 129 21 -2 9.5 -22.5 67138 130 33 -2 15.5 -16.5 654.539 131 36 17 26.5 -5.5 64940 132 29 9 19 -13 63641 133 42 20 31 -1 63542 134 44 19 31.5 -0.5 634.543 135 40 14 27 -5 629.544 136 40 16 28 -4 625.545 137 36 19 27.5 -4.5 62146 138 37 26 31.5 -0.5 620.547 139 34 27 30.5 -1.5 61948 140 44 21 32.5 0.5 619.549 141 52 21 36.5 4.5 624
50 142 52 30 41 9 63351 143 60 28 44 12 64552 144 58 31 44.5 12.5 657.553 145 58 34 46 14 671.5
54 146 53 36 44.5 12.5 68455 147 53 33 43 11 69556 148 40 35 37.5 5.5 700.557 149 44 31 37.5 5.5 706
58 150 52 29 40.5 8.5 714.559 151 56 30 43 11 725.560 152 53 31 42 10 735.561 153 54 39 46.5 14.5 750
62 154 47 30 38.5 6.5 756.5
63 155 48 26 37 5 761.564 156 44 22 33 1 762.565 157 45 21 33 1 763.566 158 54 24 39 7 770.5
67 159 55 26 40.5 8.5 77968 160 60 28 44 12 79169 161 56 31 43.5 11.5 802.570 162 46 34 40 8 810.5
71 163 55 38 46.5 14.5 82572 164 57 33 45 13 83873 165 48 34 41 9 84774 166 45 32 38.5 6.5 853.575 167 46 31 38.5 6.5 86076 168 55 25 40 8 86877 169 58 30 44 12 88078 170 41 19 30 -2 87879 171 44 18 31 -1 87780 172 46 23 34.5 2.5 879.581 173 52 24 38 6 885.582 174 55 23 39 7 892.583 175 59 24 41.5 9.5 902
84 176 60 30 45 13 91585 177 49 32 40.5 8.5 923.586 178 51 33 42 10 933.587 179 59 33 46 14 947.5
88 180 41 28 34.5 2.5 95089 181 45 24 34.5 2.5 952.590 182 58 27 42.5 10.5 96391 183 55 31 43 11 974
92 184 47 21 34 2 97693 185 56 28 42 10 98694 186 60 32 46 14 100095 187 55 23 39 7 1007
96 188 60 33 46.5 14.5 1021.597 189 49 28 38.5 6.5 102898 190 52 18 35 3 103199 191 55 26 40.5 8.5 1039.5100 192 59 22 40.5 8.5 1048101 193 67 35 51 19 1067102 194 66 43 54.5 22.5 1089.5103 195 68 36 52 20 1109.5104 196 68 35 51.5 19.5 1129105 197 66 33 49.5 17.5 1146.5106 198 59 36 47.5 15.5 1162107 199 66 33 49.5 17.5 1179.5108 200 68 34 51 19 1198.5
109 201 55 28 41.5 9.5 1208110 202 51 21 36 4 1212111 203 58 28 43 11 1223112 204 50 31 40.5 8.5 1231.5
113 205 53 32 42.5 10.5 1242114 206 65 31 48 16 1258115 207 68 43 55.5 23.5 1281.5116 208 70 41 55.5 23.5 1305
117 209 72 44 58 26 1331118 210 75 42 58.5 26.5 1357.5119 211 72 43 57.5 25.5 1383120 212 77 45 61 29 1412
121 213 76 44 60 28 1440122 214 73 45 59 27 1467123 215 73 42 57.5 25.5 1492.5124 216 74 42 58 26 1518.5125 217 67 38 52.5 20.5 1539126 218 61 35 48 16 1555127 219 69 35 52 20 1575128 220 72 42 57 25 1600129 221 65 40 52.5 20.5 1620.5130 222 60 34 47 15 1635.5131 223 62 35 48.5 16.5 1652132 224 50 36 43 11 1663133 225 60 41 50.5 18.5 1681.5
134 226 69 37 53 21 1702.5135 227 67 45 56 24 1726.5136 228 69 42 55.5 23.5 1750137 229 73 42 57.5 25.5 1775.5
138 230 76 48 62 30 1805.5139 231 70 42 56 24 1829.5140 232 73 41 57 25 1854.5141 233 79 44 61.5 29.5 1884
142 234 77 52 64.5 32.5 1916.5143 235 78 46 62 30 1946.5144 236 80 47 63.5 31.5 1978145 237 79 50 64.5 32.5 2010.5
146 238 85 46 65.5 33.5 2044147 239 76 50 63 31 2075148 240 79 42 60.5 28.5 2103.5149 241 75 44 59.5 27.5 2131150 242 73 43 58 26 2157151 243 77 39 58 26 2183152 244 76 44 60 28 2211153 245 78 45 61.5 29.5 2240.5154 246 77 43 60 28 2268.5155 247 78 44 61 29 2297.5156 248 76 42 59 27 2324.5157 249 72 38 55 23 2347.5158 250 77 42 59.5 27.5 2375
159 251 76 42 59 27 2402160 252 80 43 61.5 29.5 2431.5161 253 83 54 68.5 36.5 2468162 254 86 54 70 38 2506
163 255 84 54 69 37 2543164 256 79 53 66 34 2577165 257 79 46 62.5 30.5 2607.5166 258 78 47 62.5 30.5 2638
167 259 86 51 68.5 36.5 2674.5168 260 86 53 69.5 37.5 2712169 261 83 56 69.5 37.5 2749.5170 262 79 52 65.5 33.5 2783
171 263 83 49 66 34 2817
172 264 87 55 71 39 2856173 265 87 54 70.5 38.5 2894.5174 266 88 53 70.5 38.5 2933175 267 89 55 72 40 2973
176 268 87 55 71 39 3012177 269 89 56 72.5 40.5 3052.5178 270 93 57 75 43 3095.5179 271 92 55 73.5 41.5 3137
180 272 88 56 72 40 3177181 273 81 54 67.5 35.5 3212.5182 274 80 50 65 33 3245.5183 275 84 48 66 34 3279.5184 276 87 51 69 37 3316.5185 277 82 50 66 34 3350.5186 278 78 49 63.5 31.5 3382187 279 81 42 61.5 29.5 3411.5188 280 84 58 71 39 3450.5189 281 83 54 68.5 36.5 3487190 282 84 53 68.5 36.5 3523.5191 283 90 53 71.5 39.5 3563192 284 93 64 78.5 46.5 3609.5
193 285 95 66 80.5 48.5 3658194 286 93 64 78.5 46.5 3704.5195 287 94 56 75 43 3747.5196 288 92 57 74.5 42.5 3790
197 289 90 55 72.5 40.5 3830.5198 290 85 57 71 39 3869.5199 291 87 55 71 39 3908.5200 292 90 61 75.5 43.5 3952
201 293 95 58 76.5 44.5 3996.5202 294 94 63 78.5 46.5 4043203 295 95 63 79 47 4090204 296 93 57 75 43 4133
205 297 89 59 74 42 4175206 298 90 60 75 43 4218207 299 89 63 76 44 4262208 300 85 60 72.5 40.5 4302.5209 301 82 59 70.5 38.5 4341210 302 84 54 69 37 4378211 303 88 59 73.5 41.5 4419.5212 304 90 55 72.5 40.5 4460213 305 90 57 73.5 41.5 4501.5214 306 80 60 70 38 4539.5215 307 83 52 67.5 35.5 4575216 308 86 54 70 38 4613217 309 91 53 72 40 4653
218 310 94 56 75 43 4696219 311 91 61 76 44 4740220 312 86 59 72.5 40.5 4780.5221 313 90 56 73 41 4821.5
222 314 92 56 74 42 4863.5223 315 88 57 72.5 40.5 4904224 316 80 57 68.5 36.5 4940.5225 317 73 57 65 33 4973.5
226 318 82 54 68 36 5009.5227 319 85 55 70 38 5047.5228 320 86 57 71.5 39.5 5087229 321 89 60 74.5 42.5 5129.5
230 322 91 60 75.5 43.5 5173231 323 91 59 75 43 5216232 324 92 64 78 46 5262233 325 89 61 75 43 5305234 326 84 60 72 40 5345235 327 81 56 68.5 36.5 5381.5236 328 77 55 66 34 5415.5237 329 72 56 64 32 5447.5238 330 76 54 65 33 5480.5239 331 79 52 65.5 33.5 5514240 332 80 55 67.5 35.5 5549.5241 333 85 52 68.5 36.5 5586242 334 85 53 69 37 5623
243 335 87 54 70.5 38.5 5661.5244 336 88 53 70.5 38.5 5700245 337 88 62 75 43 5743246 338 89 57 73 41 5784
247 339 87 58 72.5 40.5 5824.5248 340 85 58 71.5 39.5 5864249 341 88 60 74 42 5906250 342 80 50 65 33 5939
251 343 82 52 67 35 5974252 344 84 51 67.5 35.5 6009.5253 345 77 51 64 32 6041.5254 346 59 51 55 23 6064.5
255 347 66 46 56 24 6088.5256 348 54 39 46.5 14.5 6103257 349 63 36 49.5 17.5 6120.5258 350 73 44 58.5 26.5 6147259 351 75 45 60 28 6175260 352 72 48 60 28 6203261 353 74 50 62 30 6233262 354 77 48 62.5 30.5 6263.5263 355 76 50 63 31 6294.5264 356 79 45 62 30 6324.5265 357 81 49 65 33 6357.5266 358 84 47 65.5 33.5 6391267 359 80 50 65 33 6424
268 360 84 57 70.5 38.5 6462.5 83 910.5 length of freeze (day) 57
269 361 80 50 65 33 6495.5 140 619.5 frost depth (oF-day)291270 362 61 42 51.5 19.5 6515 average temperature 50.0271 363 56 37 46.5 14.5 6529.5272 364 68 33 50.5 18.5 6548
273 365 68 40 54 22 6570
1982-1983
day of frost year degree cumulativeday of year (consecutive date) max. temp. min. temp avg. temp day (
oF) degree day (
oF)274 1 60 30 45 13 13
0
100
200
300
400
500
600
700
800
900
1000
0 50 100 150 200
fr
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day of frost year
Blanding, UT
1981-1982
275 2 66 33 49.5 17.5 30.5
276 3 68 33 50.5 18.5 49277 4 70 38 54 22 71278 5 64 34 49 17 88279 6 64 26 45 13 101
280 7 68 33 50.5 18.5 119.5281 8 50 33 41.5 9.5 129282 9 51 28 39.5 7.5 136.5283 10 58 33 45.5 13.5 150
284 11 56 32 44 12 162285 12 61 29 45 13 175286 13 63 28 45.5 13.5 188.5287 14 66 33 49.5 17.5 206288 15 67 31 49 17 223289 16 69 39 54 22 245290 17 68 35 51.5 19.5 264.5291 18 68 33 50.5 18.5 283292 19 58 26 42 10 293293 20 64 28 46 14 307294 21 60 30 45 13 320295 22 65 34 49.5 17.5 337.5296 23 70 36 53 21 358.5
297 24 69 35 52 20 378.5298 25 66 41 53.5 21.5 400299 26 57 38 47.5 15.5 415.5300 27 44 30 37 5 420.5
301 28 50 23 36.5 4.5 425302 29 49 21 35 3 428303 30 57 31 44 12 440304 31 51 34 42.5 10.5 450.5
305 32 53 29 41 9 459.5306 33 47 27 37 5 464.5307 34 48 18 33 1 465.5308 35 55 20 37.5 5.5 471
309 36 57 23 40 8 479310 37 56 24 40 8 487311 38 57 26 41.5 9.5 496.5312 39 52 36 44 12 508.5313 40 48 32 40 8 516.5314 41 44 32 38 6 522.5315 42 41 27 34 2 524.5316 43 47 19 33 1 525.5317 44 47 24 35.5 3.5 529318 45 43 15 29 -3 526319 46 48 20 34 2 528320 47 48 21 34.5 2.5 530.5321 48 48 28 38 6 536.5
322 49 42 33 37.5 5.5 542323 50 45 29 37 5 547324 51 36 26 31 -1 546325 52 39 25 32 0 546
326 53 39 28 33.5 1.5 547.5327 54 46 25 35.5 3.5 551328 55 38 28 33 1 552329 56 46 28 37 5 557
330 57 52 29 40.5 8.5 565.5331 58 48 26 37 5 570.5332 59 46 23 34.5 2.5 573333 60 41 27 34 2 575
334 61 40 30 35 3 578335 62 33 26 29.5 -2.5 575.5336 63 40 17 28.5 -3.5 572337 64 44 17 30.5 -1.5 570.5338 65 46 22 34 2 572.5339 66 47 25 36 4 576.5340 67 43 22 32.5 0.5 577341 68 41 25 33 1 578342 69 45 30 37.5 5.5 583.5343 70 43 34 38.5 6.5 590344 71 44 30 37 5 595345 72 48 30 39 7 602346 73 41 25 33 1 603
347 74 34 27 30.5 -1.5 601.5348 75 37 15 26 -6 595.5349 76 40 21 30.5 -1.5 594350 77 44 23 33.5 1.5 595.5
351 78 48 25 36.5 4.5 600352 79 47 25 36 4 604353 80 46 22 34 2 606354 81 48 24 36 4 610
355 82 50 26 38 6 616356 83 36 30 33 1 617357 84 37 25 31 -1 616358 85 32 23 27.5 -4.5 611.5
359 86 34 17 25.5 -6.5 605360 87 35 14 24.5 -7.5 597.5361 88 37 12 24.5 -7.5 590362 89 29 10 19.5 -12.5 577.5363 90 27 5 16 -16 561.5364 91 33 10 21.5 -10.5 551365 92 34 10 22 -10 5411 93 34 10 22 -10 5312 94 35 11 23 -9 5223 95 37 11 24 -8 5144 96 41 14 27.5 -4.5 509.55 97 46 21 33.5 1.5 5116 98 47 24 35.5 3.5 514.5
7 99 49 25 37 5 519.58 100 45 27 36 4 523.59 101 39 21 30 -2 521.510 102 41 18 29.5 -2.5 519
11 103 53 23 38 6 52512 104 49 22 35.5 3.5 528.513 105 51 22 36.5 4.5 53314 106 51 22 36.5 4.5 537.5
15 107 48 27 37.5 5.5 54316 108 48 23 35.5 3.5 546.517 109 38 31 34.5 2.5 54918 110 42 28 35 3 552
19 111 36 26 31 -1 551
20 112 37 25 31 -1 55021 113 32 25 28.5 -3.5 546.522 114 37 15 26 -6 540.523 115 36 22 29 -3 537.5
24 116 32 19 25.5 -6.5 53125 117 43 20 31.5 -0.5 530.526 118 41 16 28.5 -3.5 52727 119 44 25 34.5 2.5 529.5
28 120 46 28 37 5 534.529 121 37 27 32 0 534.530 122 41 12 26.5 -5.5 52931 123 42 20 31 -1 52832 124 42 21 31.5 -0.5 527.533 125 40 12 26 -6 521.534 126 36 18 27 -5 516.535 127 34 26 30 -2 514.536 128 38 20 29 -3 511.537 129 40 15 27.5 -4.5 50738 130 38 27 32.5 0.5 507.539 131 39 30 34.5 2.5 51040 132 47 28 37.5 5.5 515.5
41 133 47 25 36 4 519.542 134 48 24 36 4 523.543 135 47 21 34 2 525.544 136 48 26 37 5 530.5
45 137 50 26 38 6 536.546 138 51 22 36.5 4.5 54147 139 48 25 36.5 4.5 545.548 140 51 23 37 5 550.5
49 141 49 28 38.5 6.5 55750 142 45 28 36.5 4.5 561.551 143 52 26 39 7 568.552 144 52 25 38.5 6.5 575
53 145 55 28 41.5 9.5 584.554 146 58 29 43.5 11.5 59655 147 58 31 44.5 12.5 608.556 148 48 30 39 7 615.557 149 42 27 34.5 2.5 61858 150 39 23 31 -1 61759 151 44 33 38.5 6.5 623.560 152 51 36 43.5 11.5 63561 153 55 34 44.5 12.5 647.562 154 53 32 42.5 10.5 65863 155 48 33 40.5 8.5 666.564 156 43 32 37.5 5.5 67265 157 52 29 40.5 8.5 680.5
66 158 54 34 44 12 692.567 159 55 29 42 10 702.568 160 61 32 46.5 14.5 71769 161 62 32 47 15 732
70 162 62 38 50 18 75071 163 62 37 49.5 17.5 767.572 164 59 32 45.5 13.5 78173 165 55 38 46.5 14.5 795.5
74 166 46 30 38 6 801.575 167 48 28 38 6 807.576 168 41 27 34 2 809.577 169 40 29 34.5 2.5 812
78 170 45 32 38.5 6.5 818.579 171 44 22 33 1 819.580 172 41 22 31.5 -0.5 81981 173 43 28 35.5 3.5 822.582 174 45 30 37.5 5.5 82883 175 38 23 30.5 -1.5 826.584 176 43 13 28 -4 822.585 177 44 27 35.5 3.5 82686 178 48 23 35.5 3.5 829.587 179 48 31 39.5 7.5 83788 180 54 30 42 10 84789 181 63 31 47 15 86290 182 61 36 48.5 16.5 878.5
91 183 52 30 41 9 887.592 184 57 25 41 9 896.593 185 41 27 34 2 898.594 186 39 20 29.5 -2.5 896
95 187 39 21 30 -2 89496 188 41 20 30.5 -1.5 892.597 189 41 20 30.5 -1.5 89198 190 49 23 36 4 895
99 191 59 26 42.5 10.5 905.5100 192 57 32 44.5 12.5 918101 193 54 32 43 11 929102 194 42 25 33.5 1.5 930.5
103 195 41 22 31.5 -0.5 930104 196 45 28 36.5 4.5 934.5105 197 51 23 37 5 939.5106 198 58 30 44 12 951.5107 199 66 32 49 17 968.5108 200 63 35 49 17 985.5109 201 63 31 47 15 1000.5110 202 60 38 49 17 1017.5111 203 57 37 47 15 1032.5112 204 61 30 45.5 13.5 1046113 205 66 34 50 18 1064114 206 72 38 55 23 1087115 207 66 34 50 18 1105
116 208 61 34 47.5 15.5 1120.5117 209 62 39 50.5 18.5 1139118 210 66 37 51.5 19.5 1158.5119 211 64 40 52 20 1178.5
120 212 57 34 45.5 13.5 1192121 213 55 29 42 10 1202122 214 59 33 46 14 1216123 215 65 33 49 17 1233
124 216 69 36 52.5 20.5 1253.5125 217 68 38 53 21 1274.5126 218 58 40 49 17 1291.5127 219 68 30 49 17 1308.5
128 220 75 40 57.5 25.5 1334
129 221 74 39 56.5 24.5 1358.5130 222 72 38 55 23 1381.5131 223 54 35 44.5 12.5 1394132 224 62 28 45 13 1407
133 225 64 39 51.5 19.5 1426.5134 226 63 33 48 16 1442.5135 227 63 33 48 16 1458.5136 228 61 32 46.5 14.5 1473
137 229 52 30 41 9 1482138 230 60 33 46.5 14.5 1496.5139 231 53 40 46.5 14.5 1511140 232 64 40 52 20 1531141 233 74 36 55 23 1554142 234 79 38 58.5 26.5 1580.5143 235 79 44 61.5 29.5 1610144 236 84 49 66.5 34.5 1644.5145 237 86 56 71 39 1683.5146 238 85 53 69 37 1720.5147 239 87 59 73 41 1761.5148 240 85 55 70 38 1799.5149 241 83 50 66.5 34.5 1834
150 242 77 50 63.5 31.5 1865.5151 243 80 50 65 33 1898.5152 244 77 48 62.5 30.5 1929153 245 77 43 60 28 1957
154 246 76 41 58.5 26.5 1983.5155 247 77 41 59 27 2010.5156 248 79 40 59.5 27.5 2038157 249 80 40 60 28 2066
158 250 78 49 63.5 31.5 2097.5159 251 78 52 65 33 2130.5160 252 78 51 64.5 32.5 2163161 253 81 48 64.5 32.5 2195.5
162 254 83 53 68 36 2231.5163 255 67 48 57.5 25.5 2257164 256 64 42 53 21 2278165 257 75 39 57 25 2303166 258 82 42 62 30 2333167 259 85 49 67 35 2368168 260 90 58 74 42 2410169 261 91 52 71.5 39.5 2449.5170 262 87 50 68.5 36.5 2486171 263 86 50 68 36 2522172 264 88 52 70 38 2560173 265 89 50 69.5 37.5 2597.5174 266 86 57 71.5 39.5 2637
175 267 70 55 62.5 30.5 2667.5176 268 67 51 59 27 2694.5177 269 74 49 61.5 29.5 2724178 270 77 54 65.5 33.5 2757.5
179 271 83 50 66.5 34.5 2792180 272 84 51 67.5 35.5 2827.5181 273 85 52 68.5 36.5 2864182 274 85 48 66.5 34.5 2898.5
183 275 86 50 68 36 2934.5184 276 86 53 69.5 37.5 2972185 277 89 51 70 38 3010186 278 95 52 73.5 41.5 3051.5
187 279 95 59 77 45 3096.5188 280 92 59 75.5 43.5 3140189 281 88 60 74 42 3182190 282 82 55 68.5 36.5 3218.5191 283 85 56 70.5 38.5 3257192 284 91 52 71.5 39.5 3296.5193 285 89 55 72 40 3336.5194 286 91 56 73.5 41.5 3378195 287 92 53 72.5 40.5 3418.5196 288 88 55 71.5 39.5 3458197 289 88 54 71 39 3497198 290 91 51 71 39 3536199 291 93 58 75.5 43.5 3579.5
200 292 92 63 77.5 45.5 3625201 293 90 61 75.5 43.5 3668.5202 294 87 60 73.5 41.5 3710203 295 80 58 69 37 3747
204 296 80 58 69 37 3784205 297 88 58 73 41 3825206 298 83 60 71.5 39.5 3864.5207 299 80 57 68.5 36.5 3901
208 300 78 58 68 36 3937209 301 84 52 68 36 3973210 302 91 61 76 44 4017211 303 90 61 75.5 43.5 4060.5
212 304 82 59 70.5 38.5 4099213 305 87 59 73 41 4140214 306 87 60 73.5 41.5 4181.5215 307 85 62 73.5 41.5 4223216 308 90 62 76 44 4267217 309 88 64 76 44 4311218 310 90 62 76 44 4355219 311 91 63 77 45 4400220 312 94 61 77.5 45.5 4445.5221 313 91 61 76 44 4489.5222 314 87 60 73.5 41.5 4531223 315 85 57 71 39 4570224 316 85 58 71.5 39.5 4609.5
225 317 92 58 75 43 4652.5226 318 91 59 75 43 4695.5227 319 90 60 75 43 4738.5228 320 90 60 75 43 4781.5
229 321 89 60 74.5 42.5 4824230 322 83 56 69.5 37.5 4861.5231 323 81 55 68 36 4897.5232 324 85 59 72 40 4937.5
233 325 84 54 69 37 4974.5234 326 85 53 69 37 5011.5235 327 87 54 70.5 38.5 5050236 328 85 55 70 38 5088
237 329 85 56 70.5 38.5 5126.5
238 330 88 56 72 40 5166.5239 331 88 55 71.5 39.5 5206240 332 89 57 73 41 5247241 333 83 58 70.5 38.5 5285.5
242 334 85 55 70 38 5323.5243 335 91 55 73 41 5364.5244 336 91 64 77.5 45.5 5410245 337 90 63 76.5 44.5 5454.5
246 338 89 55 72 40 5494.5247 339 89 53 71 39 5533.5248 340 86 53 69.5 37.5 5571249 341 91 54 72.5 40.5 5611.5250 342 78 58 68 36 5647.5251 343 82 53 67.5 35.5 5683252 344 84 54 69 37 5720253 345 84 57 70.5 38.5 5758.5254 346 87 48 67.5 35.5 5794255 347 90 55 72.5 40.5 5834.5256 348 89 56 72.5 40.5 5875257 349 85 50 67.5 35.5 5910.5258 350 87 49 68 36 5946.5
259 351 91 50 70.5 38.5 5985260 352 86 46 66 34 6019261 353 82 51 66.5 34.5 6053.5262 354 79 51 65 33 6086.5
263 355 67 36 51.5 19.5 6106264 356 73 34 53.5 21.5 6127.5265 357 79 39 59 27 6154.5266 358 63 52 57.5 25.5 6180
267 359 67 50 58.5 26.5 6206.5268 360 74 47 60.5 28.5 6235269 361 78 46 62 30 6265270 362 71 51 61 29 6294 84 616 length of freeze (day) 13
271 363 74 45 59.5 27.5 6321.5 97 511 frost depth (oF-day)105272 364 62 45 53.5 21.5 6343 average temperature 49.4273 365 53 45 49 17 6360
1983-1984
day of frost year degree cumulative
day of year (consecutive date) max. temp. min. temp avg. temp day (
oF) degree day (
oF)274 1 55 47 51 19 19275 2 57 40 48.5 16.5 35.5276 3 62 36 49 17 52.5
277 4 68 36 52 20 72.5278 5 69 39 54 22 94.5279 6 71 43 57 25 119.5280 7 70 43 56.5 24.5 144
281 8 68 44 56 24 168282 9 71 49 60 28 196283 10 71 45 58 26 222284 11 70 40 55 23 245
285 12 68 43 55.5 23.5 268.5286 13 69 40 54.5 22.5 291287 14 60 37 48.5 16.5 307.5288 15 62 33 47.5 15.5 323289 16 68 35 51.5 19.5 342.5290 17 63 40 51.5 19.5 362291 18 68 43 55.5 23.5 385.5292 19 64 44 54 22 407.5293 20 64 35 49.5 17.5 425294 21 71 37 54 22 447295 22 70 37 53.5 21.5 468.5296 23 68 35 51.5 19.5 488297 24 68 43 55.5 23.5 511.5
298 25 67 37 52 20 531.5299 26 71 36 53.5 21.5 553300 27 68 38 53 21 574301 28 66 37 51.5 19.5 593.5
302 29 69 37 53 21 614.5303 30 67 43 55 23 637.5304 31 66 42 54 22 659.5305 32 63 39 51 19 678.5
306 33 65 42 53.5 21.5 700307 34 72 38 55 23 723308 35 69 36 52.5 20.5 743.5309 36 63 37 50 18 761.5
310 37 65 36 50.5 18.5 780311 38 63 36 49.5 17.5 797.5312 39 47 27 37 5 802.5313 40 46 20 33 1 803.5314 41 51 29 40 8 811.5315 42 55 31 43 11 822.5316 43 51 33 42 10 832.5317 44 57 33 45 13 845.5318 45 48 31 39.5 7.5 853319 46 52 24 38 6 859320 47 52 26 39 7 866321 48 49 28 38.5 6.5 872.5322 49 43 30 36.5 4.5 877
323 50 44 26 35 3 880324 51 35 29 32 0 880325 52 37 25 31 -1 879326 53 36 17 26.5 -5.5 873.5
327 54 34 17 25.5 -6.5 867328 55 39 16 27.5 -4.5 862.5329 56 37 26 31.5 -0.5 862330 57 34 16 25 -7 855
331 58 40 14 27 -5 850332 59 40 14 27 -5 845333 60 38 14 26 -6 839334 61 42 20 31 -1 838
335 62 43 25 34 2 840336 63 42 26 34 2 842337 64 37 21 29 -3 839338 65 37 20 28.5 -3.5 835.5339 66 27 7 17 -15 820.5340 67 35 8 21.5 -10.5 810
0
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800
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0 50 100 150 200
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day of frost year
Blanding, UT
1982-1983
341 68 44 17 30.5 -1.5 808.5
342 69 45 23 34 2 810.5343 70 48 25 36.5 4.5 815344 71 48 24 36 4 819345 72 47 26 36.5 4.5 823.5
346 73 42 27 34.5 2.5 826347 74 40 24 32 0 826348 75 42 27 34.5 2.5 828.5349 76 42 24 33 1 829.5
350 77 35 16 25.5 -6.5 823351 78 40 28 34 2 825352 79 41 21 31 -1 824353 80 38 25 31.5 -0.5 823.5354 81 31 20 25.5 -6.5 817355 82 26 13 19.5 -12.5 804.5356 83 36 8 22 -10 794.5357 84 39 30 34.5 2.5 797358 85 46 30 38 6 803359 86 40 32 36 4 807360 87 44 33 38.5 6.5 813.5361 88 46 32 39 7 820.5362 89 32 15 23.5 -8.5 812
363 90 32 12 22 -10 802364 91 38 18 28 -4 798365 92 43 26 34.5 2.5 800.51 93 43 24 33.5 1.5 802
2 94 43 23 33 1 8033 95 42 18 30 -2 8014 96 45 21 33 1 8025 97 52 25 38.5 6.5 808.5
6 98 50 24 37 5 813.57 99 48 25 36.5 4.5 8188 100 50 25 37.5 5.5 823.59 101 50 26 38 6 829.5
10 102 43 20 31.5 -0.5 82911 103 37 25 31 -1 82812 104 40 20 30 -2 82613 105 38 20 29 -3 82314 106 37 24 30.5 -1.5 821.515 107 36 9 22.5 -9.5 81216 108 31 0 15.5 -16.5 795.517 109 24 6 15 -17 778.518 110 22 -5 8.5 -23.5 75519 111 28 3 15.5 -16.5 738.520 112 34 4 19 -13 725.521 113 30 5 17.5 -14.5 71122 114 33 8 20.5 -11.5 699.5
23 115 38 11 24.5 -7.5 69224 116 43 13 28 -4 68825 117 41 17 29 -3 68526 118 45 23 34 2 687
27 119 44 16 30 -2 68528 120 54 21 37.5 5.5 690.529 121 55 23 39 7 697.530 122 49 23 36 4 701.5
31 123 47 21 34 2 703.532 124 44 21 32.5 0.5 70433 125 48 21 34.5 2.5 706.534 126 49 21 35 3 709.5
35 127 54 27 40.5 8.5 71836 128 54 27 40.5 8.5 726.537 129 51 24 37.5 5.5 73238 130 43 23 33 1 73339 131 47 21 34 2 73540 132 46 20 33 1 73641 133 46 27 36.5 4.5 740.542 134 38 23 30.5 -1.5 73943 135 44 16 30 -2 73744 136 52 25 38.5 6.5 743.545 137 43 32 37.5 5.5 74946 138 46 22 34 2 75147 139 50 18 34 2 753
48 140 36 21 28.5 -3.5 749.549 141 42 18 30 -2 747.550 142 36 18 27 -5 742.551 143 48 18 33 1 743.5
52 144 46 17 31.5 -0.5 74353 145 45 25 35 3 74654 146 43 13 28 -4 74255 147 43 20 31.5 -0.5 741.5
56 148 41 24 32.5 0.5 74257 149 42 25 33.5 1.5 743.558 150 48 16 32 0 743.559 151 51 19 35 3 746.5
60 152 56 24 40 8 754.561 153 55 26 40.5 8.5 76362 154 58 26 42 10 77363 155 48 26 37 5 77864 156 33 22 27.5 -4.5 773.565 157 42 15 28.5 -3.5 77066 158 46 13 29.5 -2.5 767.567 159 54 18 36 4 771.568 160 54 22 38 6 777.569 161 59 27 43 11 788.570 162 60 32 46 14 802.571 163 50 32 41 9 811.572 164 56 26 41 9 820.5
73 165 60 29 44.5 12.5 83374 166 59 35 47 15 84875 167 56 30 43 11 85976 168 55 33 44 12 871
77 169 57 28 42.5 10.5 881.578 170 52 26 39 7 888.579 171 57 25 41 9 897.580 172 64 29 46.5 14.5 912
81 173 64 32 48 16 92882 174 47 30 38.5 6.5 934.583 175 55 28 41.5 9.5 94484 176 58 25 41.5 9.5 953.5
85 177 45 30 37.5 5.5 959
86 178 36 28 32 0 95987 179 45 27 36 4 96388 180 51 25 38 6 96989 181 57 29 43 11 980
90 182 46 34 40 8 98891 183 53 30 41.5 9.5 997.592 184 40 24 32 0 997.593 185 45 24 34.5 2.5 1000
94 186 51 25 38 6 100695 187 59 26 42.5 10.5 1016.596 188 64 31 47.5 15.5 103297 189 58 35 46.5 14.5 1046.598 190 60 30 45 13 1059.599 191 65 31 48 16 1075.5100 192 47 33 40 8 1083.5101 193 58 26 42 10 1093.5102 194 54 32 43 11 1104.5103 195 60 23 41.5 9.5 1114104 196 60 35 47.5 15.5 1129.5105 197 66 35 50.5 18.5 1148106 198 73 34 53.5 21.5 1169.5
107 199 74 37 55.5 23.5 1193108 200 76 40 58 26 1219109 201 68 40 54 22 1241110 202 59 32 45.5 13.5 1254.5
111 203 47 30 38.5 6.5 1261112 204 53 33 43 11 1272113 205 60 28 44 12 1284114 206 67 33 50 18 1302
115 207 71 35 53 21 1323116 208 60 23 41.5 9.5 1332.5117 209 41 18 29.5 -2.5 1330118 210 47 20 33.5 1.5 1331.5
119 211 42 27 34.5 2.5 1334120 212 56 26 41 9 1343121 213 62 30 46 14 1357122 214 66 36 51 19 1376123 215 63 42 52.5 20.5 1396.5124 216 70 33 51.5 19.5 1416125 217 70 45 57.5 25.5 1441.5126 218 69 44 56.5 24.5 1466127 219 63 40 51.5 19.5 1485.5128 220 61 27 44 12 1497.5129 221 71 37 54 22 1519.5130 222 78 39 58.5 26.5 1546131 223 82 43 62.5 30.5 1576.5
132 224 85 49 67 35 1611.5133 225 85 48 66.5 34.5 1646134 226 88 59 73.5 41.5 1687.5135 227 85 55 70 38 1725.5
136 228 73 51 62 30 1755.5137 229 75 46 60.5 28.5 1784138 230 78 42 60 28 1812139 231 75 49 62 30 1842
140 232 80 49 64.5 32.5 1874.5141 233 85 48 66.5 34.5 1909142 234 83 51 67 35 1944143 235 86 53 69.5 37.5 1981.5
144 236 87 51 69 37 2018.5145 237 86 51 68.5 36.5 2055146 238 82 53 67.5 35.5 2090.5147 239 85 46 65.5 33.5 2124148 240 81 55 68 36 2160149 241 88 46 67 35 2195150 242 90 47 68.5 36.5 2231.5151 243 90 51 70.5 38.5 2270152 244 81 56 68.5 36.5 2306.5153 245 76 46 61 29 2335.5154 246 80 43 61.5 29.5 2365155 247 79 50 64.5 32.5 2397.5156 248 78 45 61.5 29.5 2427
157 249 59 43 51 19 2446158 250 65 43 54 22 2468159 251 65 48 56.5 24.5 2492.5160 252 69 40 54.5 22.5 2515
161 253 70 35 52.5 20.5 2535.5162 254 83 44 63.5 31.5 2567163 255 79 43 61 29 2596164 256 83 49 66 34 2630
165 257 86 47 66.5 34.5 2664.5166 258 85 52 68.5 36.5 2701167 259 81 54 67.5 35.5 2736.5168 260 77 52 64.5 32.5 2769
169 261 83 45 64 32 2801170 262 86 55 70.5 38.5 2839.5171 263 86 54 70 38 2877.5172 264 85 54 69.5 37.5 2915173 265 85 44 64.5 32.5 2947.5174 266 87 48 67.5 35.5 2983175 267 92 52 72 40 3023176 268 93 55 74 42 3065177 269 86 59 72.5 40.5 3105.5178 270 84 56 70 38 3143.5179 271 88 57 72.5 40.5 3184180 272 94 59 76.5 44.5 3228.5181 273 93 60 76.5 44.5 3273
182 274 80 59 69.5 37.5 3310.5183 275 88 57 72.5 40.5 3351184 276 91 56 73.5 41.5 3392.5185 277 90 62 76 44 3436.5
186 278 90 63 76.5 44.5 3481187 279 92 64 78 46 3527188 280 95 64 79.5 47.5 3574.5189 281 96 56 76 44 3618.5
190 282 91 58 74.5 42.5 3661191 283 89 61 75 43 3704192 284 91 59 75 43 3747193 285 93 59 76 44 3791
194 286 90 58 74 42 3833
195 287 85 61 73 41 3874196 288 87 58 72.5 40.5 3914.5197 289 88 57 72.5 40.5 3955198 290 88 57 72.5 40.5 3995.5
199 291 91 57 74 42 4037.5200 292 91 59 75 43 4080.5201 293 92 57 74.5 42.5 4123202 294 94 65 79.5 47.5 4170.5
203 295 88 56 72 40 4210.5204 296 82 49 65.5 33.5 4244205 297 85 58 71.5 39.5 4283.5206 298 90 56 73 41 4324.5207 299 87 59 73 41 4365.5208 300 88 57 72.5 40.5 4406209 301 88 60 74 42 4448210 302 88 58 73 41 4489211 303 86 58 72 40 4529212 304 86 57 71.5 39.5 4568.5213 305 87 56 71.5 39.5 4608214 306 89 57 73 41 4649215 307 88 57 72.5 40.5 4689.5
216 308 90 60 75 43 4732.5217 309 92 61 76.5 44.5 4777218 310 80 57 68.5 36.5 4813.5219 311 86 55 70.5 38.5 4852
220 312 89 59 74 42 4894221 313 90 56 73 41 4935222 314 91 57 74 42 4977223 315 87 58 72.5 40.5 5017.5
224 316 88 60 74 42 5059.5225 317 90 64 77 45 5104.5226 318 88 58 73 41 5145.5227 319 88 60 74 42 5187.5
228 320 87 56 71.5 39.5 5227229 321 87 60 73.5 41.5 5268.5230 322 88 62 75 43 5311.5231 323 88 58 73 41 5352.5232 324 84 59 71.5 39.5 5392233 325 79 57 68 36 5428234 326 79 52 65.5 33.5 5461.5235 327 85 56 70.5 38.5 5500236 328 81 59 70 38 5538237 329 79 55 67 35 5573238 330 80 56 68 36 5609239 331 84 58 71 39 5648240 332 89 55 72 40 5688
241 333 87 54 70.5 38.5 5726.5242 334 88 62 75 43 5769.5243 335 91 63 77 45 5814.5244 336 87 59 73 41 5855.5
245 337 82 56 69 37 5892.5246 338 84 51 67.5 35.5 5928247 339 87 50 68.5 36.5 5964.5248 340 89 50 69.5 37.5 6002
249 341 89 52 70.5 38.5 6040.5250 342 85 52 68.5 36.5 6077251 343 83 48 65.5 33.5 6110.5252 344 86 46 66 34 6144.5
253 345 88 48 68 36 6180.5254 346 87 54 70.5 38.5 6219255 347 77 58 67.5 35.5 6254.5256 348 82 49 65.5 33.5 6288257 349 84 46 65 33 6321258 350 88 58 73 41 6362259 351 78 58 68 36 6398260 352 80 52 66 34 6432261 353 82 47 64.5 32.5 6464.5262 354 85 54 69.5 37.5 6502263 355 85 51 68 36 6538264 356 82 51 66.5 34.5 6572.5265 357 78 51 64.5 32.5 6605
266 358 77 46 61.5 29.5 6634.5267 359 77 47 62 30 6664.5268 360 75 49 62 30 6694.5269 361 68 35 51.5 19.5 6714
270 362 53 47 50 18 6732 51 880 length of freeze (day) 66
271 363 69 46 57.5 25.5 6757.5 117 685 frost depth (oF-day)195272 364 73 40 56.5 24.5 6782 average temperature 50.6273 365 72 36 54 22 6804274 366 70 36 53 21 6825
1984-1985 day of frost year degree cumulative
day of year (consecutive date) max. temp. min. temp avg. temp day (
oF) degree day (
oF)274 1 73 36 54.5 22.5 22.5
275 2 64 45 54.5 22.5 45276 3 60 46 53 21 66277 4 58 44 51 19 85278 5 67 43 55 23 108
279 6 69 43 56 24 132280 7 72 41 56.5 24.5 156.5281 8 70 45 57.5 25.5 182282 9 70 43 56.5 24.5 206.5
283 10 71 47 59 27 233.5284 11 69 42 55.5 23.5 257285 12 58 40 49 17 274286 13 65 30 47.5 15.5 289.5
287 14 51 35 43 11 300.5288 15 40 28 34 2 302.5289 16 42 25 33.5 1.5 304290 17 52 30 41 9 313
291 18 48 26 37 5 318292 19 46 25 35.5 3.5 321.5293 20 50 28 39 7 328.5294 21 43 30 36.5 4.5 333295 22 49 27 38 6 339296 23 46 28 37 5 344
0
100
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800
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1000
0 50 100 150 200
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day of frost year
Blanding, UT
1983-1984
297 24 49 23 36 4 348
298 25 53 26 39.5 7.5 355.5299 26 53 28 40.5 8.5 364300 27 56 35 45.5 13.5 377.5301 28 55 28 41.5 9.5 387
302 29 60 31 45.5 13.5 400.5303 30 59 35 47 15 415.5304 31 59 32 45.5 13.5 429305 32 62 28 45 13 442
306 33 60 31 45.5 13.5 455.5307 34 64 30 47 15 470.5308 35 60 28 44 12 482.5309 36 59 29 44 12 494.5310 37 61 35 48 16 510.5311 38 54 28 41 9 519.5312 39 54 33 43.5 11.5 531313 40 44 29 36.5 4.5 535.5314 41 43 18 30.5 -1.5 534315 42 56 25 40.5 8.5 542.5316 43 61 29 45 13 555.5317 44 58 34 46 14 569.5318 45 52 28 40 8 577.5
319 46 53 28 40.5 8.5 586320 47 52 30 41 9 595321 48 53 31 42 10 605322 49 49 24 36.5 4.5 609.5
323 50 51 22 36.5 4.5 614324 51 50 22 36 4 618325 52 49 24 36.5 4.5 622.5326 53 56 31 43.5 11.5 634
327 54 57 32 44.5 12.5 646.5328 55 49 30 39.5 7.5 654329 56 35 24 29.5 -2.5 651.5330 57 30 16 23 -9 642.5
331 58 34 8 21 -11 631.5332 59 34 15 24.5 -7.5 624333 60 43 18 30.5 -1.5 622.5334 61 42 22 32 0 622.5335 62 41 17 29 -3 619.5336 63 39 16 27.5 -4.5 615337 64 41 23 32 0 615338 65 50 25 37.5 5.5 620.5339 66 47 21 34 2 622.5340 67 46 21 33.5 1.5 624341 68 50 24 37 5 629342 69 40 29 34.5 2.5 631.5343 70 48 24 36 4 635.5
344 71 43 27 35 3 638.5345 72 40 34 37 5 643.5346 73 39 30 34.5 2.5 646347 74 34 28 31 -1 645
348 75 38 26 32 0 645349 76 30 24 27 -5 640350 77 31 24 27.5 -4.5 635.5351 78 40 23 31.5 -0.5 635
352 79 44 23 33.5 1.5 636.5353 80 44 27 35.5 3.5 640354 81 38 25 31.5 -0.5 639.5355 82 37 12 24.5 -7.5 632
356 83 37 15 26 -6 626357 84 36 13 24.5 -7.5 618.5358 85 42 14 28 -4 614.5359 86 39 19 29 -3 611.5360 87 46 24 35 3 614.5361 88 39 34 36.5 4.5 619362 89 46 34 40 8 627363 90 42 30 36 4 631364 91 43 27 35 3 634365 92 39 24 31.5 -0.5 633.51 93 33 15 24 -8 625.52 94 38 13 25.5 -6.5 6193 95 38 14 26 -6 613
4 96 42 18 30 -2 6115 97 43 23 33 1 6126 98 43 23 33 1 6137 99 40 30 35 3 616
8 100 35 29 32 0 6169 101 40 22 31 -1 61510 102 39 15 27 -5 61011 103 36 22 29 -3 607
12 104 33 16 24.5 -7.5 599.513 105 38 8 23 -9 590.514 106 39 13 26 -6 584.515 107 38 16 27 -5 579.5
16 108 41 16 28.5 -3.5 57617 109 46 18 32 0 57618 110 50 19 34.5 2.5 578.519 111 52 24 38 6 584.520 112 48 24 36 4 588.521 113 46 27 36.5 4.5 59322 114 42 25 33.5 1.5 594.523 115 39 22 30.5 -1.5 59324 116 37 29 33 1 59425 117 36 21 28.5 -3.5 590.526 118 41 26 33.5 1.5 59227 119 40 21 30.5 -1.5 590.528 120 35 21 28 -4 586.5
29 121 37 18 27.5 -4.5 58230 122 27 10 18.5 -13.5 568.531 123 20 -2 9 -23 545.532 124 18 -8 5 -27 518.5
33 125 24 -1 11.5 -20.5 49834 126 29 14 21.5 -10.5 487.535 127 27 3 15 -17 470.536 128 28 -5 11.5 -20.5 450
37 129 34 3 18.5 -13.5 436.538 130 37 8 22.5 -9.5 42739 131 43 18 30.5 -1.5 425.540 132 40 28 34 2 427.5
41 133 30 13 21.5 -10.5 417
42 134 39 10 24.5 -7.5 409.543 135 47 19 33 1 410.544 136 50 23 36.5 4.5 41545 137 53 25 39 7 422
46 138 52 25 38.5 6.5 428.547 139 55 28 41.5 9.5 43848 140 56 30 43 11 44949 141 54 31 42.5 10.5 459.5
50 142 50 26 38 6 465.551 143 47 33 40 8 473.552 144 49 32 40.5 8.5 48253 145 50 29 39.5 7.5 489.554 146 46 20 33 1 490.555 147 48 20 34 2 492.556 148 52 25 38.5 6.5 49957 149 51 21 36 4 50358 150 56 26 41 9 51259 151 57 26 41.5 9.5 521.560 152 54 26 40 8 529.561 153 54 29 41.5 9.5 53962 154 35 18 26.5 -5.5 533.5
63 155 36 11 23.5 -8.5 52564 156 49 20 34.5 2.5 527.565 157 57 36 46.5 14.5 54266 158 57 25 41 9 551
67 159 59 27 43 11 56268 160 56 39 47.5 15.5 577.569 161 50 43 46.5 14.5 59270 162 51 39 45 13 605
71 163 47 30 38.5 6.5 611.572 164 53 26 39.5 7.5 61973 165 56 31 43.5 11.5 630.574 166 53 34 43.5 11.5 642
75 167 48 32 40 8 65076 168 56 30 43 11 66177 169 59 30 44.5 12.5 673.578 170 49 32 40.5 8.5 68279 171 61 31 46 14 69680 172 56 29 42.5 10.5 706.581 173 43 24 33.5 1.5 70882 174 56 20 38 6 71483 175 63 29 46 14 72884 176 65 32 48.5 16.5 744.585 177 53 34 43.5 11.5 75686 178 55 27 41 9 76587 179 43 27 35 3 768
88 180 33 25 29 -3 76589 181 40 20 30 -2 76390 182 48 21 34.5 2.5 765.591 183 61 28 44.5 12.5 778
92 184 68 31 49.5 17.5 795.593 185 69 37 53 21 816.594 186 64 38 51 19 835.595 187 65 34 49.5 17.5 853
96 188 67 42 54.5 22.5 875.597 189 71 42 56.5 24.5 90098 190 74 40 57 25 92599 191 74 45 59.5 27.5 952.5
100 192 74 41 57.5 25.5 978101 193 73 41 57 25 1003102 194 72 41 56.5 24.5 1027.5103 195 74 39 56.5 24.5 1052104 196 76 39 57.5 25.5 1077.5105 197 77 40 58.5 26.5 1104106 198 73 41 57 25 1129107 199 70 45 57.5 25.5 1154.5108 200 58 33 45.5 13.5 1168109 201 54 30 42 10 1178110 202 57 36 46.5 14.5 1192.5111 203 49 35 42 10 1202.5112 204 50 33 41.5 9.5 1212
113 205 58 26 42 10 1222114 206 64 33 48.5 16.5 1238.5115 207 60 35 47.5 15.5 1254116 208 48 29 38.5 6.5 1260.5
117 209 65 31 48 16 1276.5118 210 58 42 50 18 1294.5119 211 73 41 57 25 1319.5120 212 80 43 61.5 29.5 1349
121 213 78 48 63 31 1380122 214 76 43 59.5 27.5 1407.5123 215 75 49 62 30 1437.5124 216 72 54 63 31 1468.5
125 217 74 44 59 27 1495.5126 218 75 45 60 28 1523.5127 219 75 45 60 28 1551.5128 220 74 41 57.5 25.5 1577129 221 69 45 57 25 1602130 222 64 40 52 20 1622131 223 64 35 49.5 17.5 1639.5132 224 50 37 43.5 11.5 1651133 225 57 30 43.5 11.5 1662.5134 226 67 31 49 17 1679.5135 227 77 38 57.5 25.5 1705136 228 72 45 58.5 26.5 1731.5137 229 76 45 60.5 28.5 1760
138 230 73 41 57 25 1785139 231 67 42 54.5 22.5 1807.5140 232 70 41 55.5 23.5 1831141 233 65 46 55.5 23.5 1854.5
142 234 71 39 55 23 1877.5143 235 77 46 61.5 29.5 1907144 236 81 47 64 32 1939145 237 80 48 64 32 1971
146 238 79 46 62.5 30.5 2001.5147 239 79 45 62 30 2031.5148 240 81 43 62 30 2061.5149 241 78 45 61.5 29.5 2091
150 242 74 45 59.5 27.5 2118.5
151 243 70 45 57.5 25.5 2144152 244 73 41 57 25 2169153 245 77 38 57.5 25.5 2194.5154 246 75 42 58.5 26.5 2221
155 247 80 47 63.5 31.5 2252.5156 248 81 44 62.5 30.5 2283157 249 90 51 70.5 38.5 2321.5158 250 95 55 75 43 2364.5
159 251 93 58 75.5 43.5 2408160 252 93 56 74.5 42.5 2450.5161 253 87 55 71 39 2489.5162 254 84 51 67.5 35.5 2525163 255 90 52 71 39 2564164 256 90 55 72.5 40.5 2604.5165 257 91 59 75 43 2647.5166 258 93 60 76.5 44.5 2692167 259 91 59 75 43 2735168 260 89 58 73.5 41.5 2776.5169 261 91 52 71.5 39.5 2816170 262 91 55 73 41 2857171 263 91 57 74 42 2899
172 264 89 52 70.5 38.5 2937.5173 265 91 55 73 41 2978.5174 266 93 53 73 41 3019.5175 267 86 57 71.5 39.5 3059
176 268 79 45 62 30 3089177 269 69 33 51 19 3108178 270 83 42 62.5 30.5 3138.5179 271 88 48 68 36 3174.5
180 272 88 51 69.5 37.5 3212181 273 89 49 69 37 3249182 274 90 49 69.5 37.5 3286.5183 275 93 59 76 44 3330.5
184 276 93 54 73.5 41.5 3372185 277 98 58 78 46 3418186 278 98 58 78 46 3464187 279 100 62 81 49 3513188 280 100 64 82 50 3563189 281 95 63 79 47 3610190 282 96 61 78.5 46.5 3656.5191 283 93 57 75 43 3699.5192 284 95 59 77 45 3744.5193 285 93 61 77 45 3789.5194 286 92 58 75 43 3832.5195 287 90 57 73.5 41.5 3874196 288 93 61 77 45 3919
197 289 93 58 75.5 43.5 3962.5198 290 89 62 75.5 43.5 4006199 291 91 58 74.5 42.5 4048.5200 292 84 57 70.5 38.5 4087
201 293 84 58 71 39 4126202 294 85 55 70 38 4164203 295 75 55 65 33 4197204 296 81 56 68.5 36.5 4233.5
205 297 79 54 66.5 34.5 4268206 298 86 59 72.5 40.5 4308.5207 299 85 57 71 39 4347.5208 300 88 57 72.5 40.5 4388
209 301 78 59 68.5 36.5 4424.5210 302 86 57 71.5 39.5 4464211 303 78 55 66.5 34.5 4498.5212 304 85 54 69.5 37.5 4536213 305 84 60 72 40 4576214 306 83 61 72 40 4616215 307 86 56 71 39 4655216 308 87 55 71 39 4694217 309 91 56 73.5 41.5 4735.5218 310 93 58 75.5 43.5 4779219 311 91 54 72.5 40.5 4819.5220 312 88 58 73 41 4860.5221 313 90 56 73 41 4901.5
222 314 90 58 74 42 4943.5223 315 85 57 71 39 4982.5224 316 86 50 68 36 5018.5225 317 87 47 67 35 5053.5
226 318 88 53 70.5 38.5 5092227 319 89 52 70.5 38.5 5130.5228 320 89 47 68 36 5166.5229 321 89 51 70 38 5204.5
230 322 87 52 69.5 37.5 5242231 323 88 55 71.5 39.5 5281.5232 324 85 54 69.5 37.5 5319233 325 86 53 69.5 37.5 5356.5
234 326 90 55 72.5 40.5 5397235 327 94 57 75.5 43.5 5440.5236 328 94 56 75 43 5483.5237 329 93 53 73 41 5524.5238 330 93 56 74.5 42.5 5567239 331 88 64 76 44 5611240 332 90 60 75 43 5654241 333 93 58 75.5 43.5 5697.5242 334 92 58 75 43 5740.5243 335 90 60 75 43 5783.5244 336 89 63 76 44 5827.5245 337 82 57 69.5 37.5 5865246 338 79 55 67 35 5900
247 339 78 52 65 33 5933248 340 76 44 60 28 5961249 341 77 42 59.5 27.5 5988.5250 342 67 48 57.5 25.5 6014
251 343 77 45 61 29 6043252 344 76 44 60 28 6071253 345 68 46 57 25 6096254 346 64 39 51.5 19.5 6115.5
255 347 68 33 50.5 18.5 6134256 348 74 40 57 25 6159257 349 80 49 64.5 32.5 6191.5258 350 76 50 63 31 6222.5
300
400
500
600
700
e in
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Blanding, UT
1984-1985
259 351 78 48 63 31 6253.5
260 352 78 46 62 30 6283.5261 353 63 50 56.5 24.5 6308262 354 64 43 53.5 21.5 6329.5263 355 62 45 53.5 21.5 6351
264 356 64 45 54.5 22.5 6373.5265 357 65 46 55.5 23.5 6397266 358 69 33 51 19 6416267 359 75 38 56.5 24.5 6440.5
268 360 66 46 56 24 6464.5269 361 73 40 56.5 24.5 6489270 362 72 41 56.5 24.5 6513.5 92 633.5 length of freeze (day) 43
271 363 65 44 54.5 22.5 6536 135 410.5 frost depth (oF-day)223272 364 60 32 46 14 6550 average temperature 50.0273 365 65 30 47.5 15.5 6565.5
1985-1986 day of frost year degree cumulative
day of year (consecutive date) max. temp. min. temp avg. temp day (
oF) degree day (
oF)
274 1 69 36 52.5 20.5 20.5275 2 70 40 55 23 43.5276 3 74 41 57.5 25.5 69277 4 74 41 57.5 25.5 94.5
278 5 74 42 58 26 120.5279 6 73 40 56.5 24.5 145280 7 62 45 53.5 21.5 166.5281 8 57 39 48 16 182.5
282 9 63 41 52 20 202.5283 10 60 43 51.5 19.5 222284 11 58 40 49 17 239285 12 60 35 47.5 15.5 254.5286 13 54 36 45 13 267.5287 14 56 30 43 11 278.5288 15 61 29 45 13 291.5289 16 65 35 50 18 309.5290 17 64 40 52 20 329.5291 18 64 36 50 18 347.5292 19 65 38 51.5 19.5 367293 20 66 38 52 20 387294 21 64 41 52.5 20.5 407.5
295 22 57 38 47.5 15.5 423296 23 64 33 48.5 16.5 439.5297 24 68 35 51.5 19.5 459298 25 68 41 54.5 22.5 481.5
299 26 70 41 55.5 23.5 505300 27 71 41 56 24 529301 28 68 44 56 24 553302 29 65 41 53 21 574
303 30 64 39 51.5 19.5 593.5304 31 55 36 45.5 13.5 607305 32 58 30 44 12 619306 33 60 30 45 13 632
307 34 65 34 49.5 17.5 649.5308 35 65 35 50 18 667.5309 36 60 39 49.5 17.5 685310 37 54 32 43 11 696311 38 55 28 41.5 9.5 705.5312 39 62 34 48 16 721.5313 40 56 28 42 10 731.5314 41 56 28 42 10 741.5315 42 54 41 47.5 15.5 757316 43 46 26 36 4 761317 44 35 13 24 -8 753318 45 36 16 26 -6 747319 46 43 17 30 -2 745
320 47 42 20 31 -1 744321 48 39 30 34.5 2.5 746.5322 49 34 16 25 -7 739.5323 50 29 5 17 -15 724.5
324 51 34 10 22 -10 714.5325 52 36 17 26.5 -5.5 709326 53 44 16 30 -2 707327 54 48 25 36.5 4.5 711.5
328 55 45 31 38 6 717.5329 56 42 36 39 7 724.5330 57 49 31 40 8 732.5331 58 45 28 36.5 4.5 737
332 59 36 26 31 -1 736333 60 43 32 37.5 5.5 741.5334 61 37 28 32.5 0.5 742335 62 40 26 33 1 743336 63 40 30 35 3 746337 64 46 31 38.5 6.5 752.5338 65 52 28 40 8 760.5339 66 47 28 37.5 5.5 766340 67 48 30 39 7 773341 68 45 25 35 3 776342 69 37 23 30 -2 774343 70 35 16 25.5 -6.5 767.5344 71 32 18 25 -7 760.5
345 72 31 16 23.5 -8.5 752346 73 34 13 23.5 -8.5 743.5347 74 35 11 23 -9 734.5348 75 38 16 27 -5 729.5
349 76 40 17 28.5 -3.5 726350 77 45 17 31 -1 725351 78 44 18 31 -1 724352 79 48 23 35.5 3.5 727.5
353 80 52 22 37 5 732.5354 81 50 21 35.5 3.5 736355 82 50 22 36 4 740356 83 56 23 39.5 7.5 747.5
357 84 50 22 36 4 751.5358 85 50 23 36.5 4.5 756359 86 53 24 38.5 6.5 762.5360 87 47 21 34 2 764.5361 88 47 19 33 1 765.5362 89 48 21 34.5 2.5 768
0
100
200
0 50 100 150 200
fr
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z
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day of frost year
363 90 44 20 32 0 768
364 91 44 28 36 4 772365 92 41 24 32.5 0.5 772.51 93 36 21 28.5 -3.5 7692 94 45 21 33 1 770
3 95 48 29 38.5 6.5 776.54 96 42 20 31 -1 775.55 97 38 19 28.5 -3.5 7726 98 34 18 26 -6 766
7 99 43 21 32 0 7668 100 44 17 30.5 -1.5 764.59 101 50 17 33.5 1.5 76610 102 51 29 40 8 77411 103 52 23 37.5 5.5 779.512 104 53 23 38 6 785.513 105 51 25 38 6 791.514 106 50 23 36.5 4.5 79615 107 36 24 30 -2 79416 108 41 23 32 0 79417 109 45 23 34 2 79618 110 52 27 39.5 7.5 803.519 111 54 26 40 8 811.5
20 112 55 28 41.5 9.5 82121 113 46 23 34.5 2.5 823.522 114 46 21 33.5 1.5 82523 115 52 29 40.5 8.5 833.5
24 116 47 25 36 4 837.525 117 50 19 34.5 2.5 84026 118 54 22 38 6 84627 119 54 23 38.5 6.5 852.5
28 120 55 24 39.5 7.5 86029 121 58 26 42 10 87030 122 52 31 41.5 9.5 879.531 123 52 35 43.5 11.5 891
32 124 54 29 41.5 9.5 900.533 125 53 28 40.5 8.5 90934 126 49 25 37 5 91435 127 46 22 34 2 91636 128 44 20 32 0 91637 129 37 24 30.5 -1.5 914.538 130 32 12 22 -10 904.539 131 32 15 23.5 -8.5 89640 132 34 10 22 -10 88641 133 30 3 16.5 -15.5 870.542 134 37 8 22.5 -9.5 86143 135 38 17 27.5 -4.5 856.544 136 45 30 37.5 5.5 862
45 137 42 29 35.5 3.5 865.546 138 40 32 36 4 869.547 139 48 32 40 8 877.548 140 48 33 40.5 8.5 886
49 141 55 32 43.5 11.5 897.550 142 56 39 47.5 15.5 91351 143 52 35 43.5 11.5 924.552 144 49 26 37.5 5.5 930
53 145 50 24 37 5 93554 146 62 30 46 14 94955 147 70 34 52 20 96956 148 69 35 52 20 989
57 149 68 37 52.5 20.5 1009.558 150 64 36 50 18 1027.559 151 62 33 47.5 15.5 104360 152 66 29 47.5 15.5 1058.561 153 65 35 50 18 1076.562 154 66 37 51.5 19.5 109663 155 64 33 48.5 16.5 1112.564 156 67 31 49 17 1129.565 157 67 34 50.5 18.5 114866 158 64 37 50.5 18.5 1166.567 159 59 34 46.5 14.5 118168 160 49 32 40.5 8.5 1189.569 161 38 32 35 3 1192.5
70 162 41 23 32 0 1192.571 163 48 26 37 5 1197.572 164 48 27 37.5 5.5 120373 165 42 30 36 4 1207
74 166 47 26 36.5 4.5 1211.575 167 48 30 39 7 1218.576 168 35 30 32.5 0.5 121977 169 45 24 34.5 2.5 1221.5
78 170 52 22 37 5 1226.579 171 58 29 43.5 11.5 123880 172 61 30 45.5 13.5 1251.581 173 64 30 47 15 1266.5
82 174 66 33 49.5 17.5 128483 175 61 34 47.5 15.5 1299.584 176 68 35 51.5 19.5 131985 177 70 33 51.5 19.5 1338.586 178 73 37 55 23 1361.587 179 74 40 57 25 1386.588 180 70 40 55 23 1409.589 181 70 38 54 22 1431.590 182 67 40 53.5 21.5 145391 183 52 42 47 15 146892 184 45 31 38 6 147493 185 45 30 37.5 5.5 1479.594 186 49 24 36.5 4.5 1484
95 187 62 35 48.5 16.5 1500.596 188 68 36 52 20 1520.597 189 63 39 51 19 1539.598 190 62 34 48 16 1555.5
99 191 62 33 47.5 15.5 1571100 192 63 31 47 15 1586101 193 64 40 52 20 1606102 194 63 36 49.5 17.5 1623.5
103 195 49 33 41 9 1632.5104 196 58 23 40.5 8.5 1641105 197 66 36 51 19 1660106 198 66 46 56 24 1684
107 199 55 33 44 12 1696
108 200 51 25 38 6 1702109 201 59 30 44.5 12.5 1714.5110 202 72 33 52.5 20.5 1735111 203 79 47 63 31 1766
112 204 76 45 60.5 28.5 1794.5113 205 65 42 53.5 21.5 1816114 206 70 38 54 22 1838115 207 65 37 51 19 1857
116 208 47 32 39.5 7.5 1864.5117 209 59 25 42 10 1874.5118 210 74 34 54 22 1896.5119 211 75 38 56.5 24.5 1921120 212 75 41 58 26 1947121 213 75 41 58 26 1973122 214 81 48 64.5 32.5 2005.5123 215 78 44 61 29 2034.5124 216 73 40 56.5 24.5 2059125 217 63 30 46.5 14.5 2073.5126 218 62 40 51 19 2092.5127 219 46 32 39 7 2099.5128 220 51 31 41 9 2108.5
129 221 55 34 44.5 12.5 2121130 222 68 31 49.5 17.5 2138.5131 223 72 38 55 23 2161.5132 224 74 40 57 25 2186.5
133 225 74 40 57 25 2211.5134 226 73 43 58 26 2237.5135 227 70 42 56 24 2261.5136 228 61 34 47.5 15.5 2277
137 229 67 35 51 19 2296138 230 76 39 57.5 25.5 2321.5139 231 82 43 62.5 30.5 2352140 232 82 48 65 33 2385
141 233 76 45 60.5 28.5 2413.5142 234 74 42 58 26 2439.5143 235 77 44 60.5 28.5 2468144 236 81 47 64 32 2500145 237 84 54 69 37 2537146 238 82 56 69 37 2574147 239 83 50 66.5 34.5 2608.5148 240 80 49 64.5 32.5 2641149 241 75 54 64.5 32.5 2673.5150 242 76 49 62.5 30.5 2704151 243 78 48 63 31 2735152 244 77 47 62 30 2765153 245 73 49 61 29 2794
154 246 83 52 67.5 35.5 2829.5155 247 87 53 70 38 2867.5156 248 85 56 70.5 38.5 2906157 249 84 49 66.5 34.5 2940.5
158 250 83 49 66 34 2974.5159 251 81 48 64.5 32.5 3007160 252 65 48 56.5 24.5 3031.5161 253 73 44 58.5 26.5 3058
162 254 85 49 67 35 3093163 255 87 49 68 36 3129164 256 87 52 69.5 37.5 3166.5165 257 89 51 70 38 3204.5
166 258 90 51 70.5 38.5 3243167 259 92 52 72 40 3283168 260 92 57 74.5 42.5 3325.5169 261 88 58 73 41 3366.5170 262 89 57 73 41 3407.5171 263 88 55 71.5 39.5 3447172 264 88 52 70 38 3485173 265 93 57 75 43 3528174 266 91 59 75 43 3571175 267 77 56 66.5 34.5 3605.5176 268 72 55 63.5 31.5 3637177 269 87 52 69.5 37.5 3674.5178 270 91 58 74.5 42.5 3717
179 271 91 60 75.5 43.5 3760.5180 272 89 62 75.5 43.5 3804181 273 86 64 75 43 3847182 274 91 60 75.5 43.5 3890.5
183 275 92 60 76 44 3934.5184 276 89 60 74.5 42.5 3977185 277 82 63 72.5 40.5 4017.5186 278 82 55 68.5 36.5 4054
187 279 85 52 68.5 36.5 4090.5188 280 81 58 69.5 37.5 4128189 281 84 59 71.5 39.5 4167.5190 282 86 55 70.5 38.5 4206
191 283 89 55 72 40 4246192 284 92 57 74.5 42.5 4288.5193 285 93 57 75 43 4331.5194 286 95 62 78.5 46.5 4378195 287 94 62 78 46 4424196 288 81 59 70 38 4462197 289 76 54 65 33 4495198 290 84 53 68.5 36.5 4531.5199 291 90 59 74.5 42.5 4574200 292 84 57 70.5 38.5 4612.5201 293 81 53 67 35 4647.5202 294 80 53 66.5 34.5 4682203 295 74 55 64.5 32.5 4714.5
204 296 69 52 60.5 28.5 4743205 297 80 49 64.5 32.5 4775.5206 298 84 52 68 36 4811.5207 299 85 57 71 39 4850.5
208 300 85 49 67 35 4885.5209 301 88 52 70 38 4923.5210 302 89 55 72 40 4963.5211 303 91 56 73.5 41.5 5005
212 304 95 58 76.5 44.5 5049.5213 305 95 59 77 45 5094.5214 306 94 64 79 47 5141.5215 307 92 60 76 44 5185.5
216 308 92 59 75.5 43.5 5229
217 309 87 60 73.5 41.5 5270.5218 310 85 59 72 40 5310.5219 311 92 57 74.5 42.5 5353220 312 90 65 77.5 45.5 5398.5
221 313 89 59 74 42 5440.5222 314 87 57 72 40 5480.5223 315 88 59 73.5 41.5 5522224 316 88 59 73.5 41.5 5563.5
225 317 83 53 68 36 5599.5226 318 81 53 67 35 5634.5227 319 88 53 70.5 38.5 5673228 320 93 60 76.5 44.5 5717.5229 321 95 60 77.5 45.5 5763230 322 95 64 79.5 47.5 5810.5231 323 90 60 75 43 5853.5232 324 89 61 75 43 5896.5233 325 89 59 74 42 5938.5234 326 90 57 73.5 41.5 5980235 327 82 61 71.5 39.5 6019.5236 328 78 58 68 36 6055.5237 329 80 55 67.5 35.5 6091
238 330 86 54 70 38 6129239 331 90 55 72.5 40.5 6169.5240 332 70 56 63 31 6200.5241 333 72 55 63.5 31.5 6232
242 334 77 51 64 32 6264243 335 81 52 66.5 34.5 6298.5244 336 77 48 62.5 30.5 6329245 337 78 48 63 31 6360
246 338 81 47 64 32 6392247 339 84 50 67 35 6427248 340 86 50 68 36 6463249 341 87 53 70 38 6501
250 342 83 54 68.5 36.5 6537.5251 343 67 52 59.5 27.5 6565252 344 70 50 60 28 6593253 345 68 45 56.5 24.5 6617.5254 346 72 39 55.5 23.5 6641255 347 73 44 58.5 26.5 6667.5256 348 74 50 62 30 6697.5257 349 76 44 60 28 6725.5258 350 78 44 61 29 6754.5259 351 77 44 60.5 28.5 6783260 352 74 42 58 26 6809261 353 73 45 59 27 6836262 354 74 42 58 26 6862
263 355 72 54 63 31 6893264 356 73 52 62.5 30.5 6923.5265 357 62 50 56 24 6947.5266 358 59 48 53.5 21.5 6969
267 359 51 40 45.5 13.5 6982.5268 360 52 40 46 14 6996.5269 361 60 34 47 15 7011.5270 362 64 35 49.5 17.5 7029 128 916 length of freeze (day) 7271 363 60 44 52 20 7049 135 856.5 frost depth (oF-day)59.5
272 364 58 38 48 16 7065 average temperature 51.4273 365 62 33 47.5 15.5 7080.5
1986-1987 day of frost year degree cumulative
day of year (consecutive date) max. temp. min. temp avg. temp day (
oF) degree day (
oF)274 1 67 37 52 20 20275 2 58 46 52 20 40276 3 55 36 45.5 13.5 53.5
277 4 64 32 48 16 69.5278 5 70 41 55.5 23.5 93279 6 64 43 53.5 21.5 114.5280 7 68 39 53.5 21.5 136
281 8 70 41 55.5 23.5 159.5282 9 72 40 56 24 183.5283 10 57 44 50.5 18.5 202284 11 47 33 40 8 210
285 12 42 29 35.5 3.5 213.5286 13 54 22 38 6 219.5287 14 59 29 44 12 231.5288 15 64 31 47.5 15.5 247
289 16 67 40 53.5 21.5 268.5290 17 68 38 53 21 289.5291 18 67 40 53.5 21.5 311292 19 61 45 53 21 332293 20 58 33 45.5 13.5 345.5294 21 56 34 45 13 358.5295 22 61 31 46 14 372.5296 23 64 34 49 17 389.5297 24 67 34 50.5 18.5 408298 25 64 39 51.5 19.5 427.5299 26 70 38 54 22 449.5300 27 63 36 49.5 17.5 467301 28 67 35 51 19 486
302 29 69 40 54.5 22.5 508.5303 30 64 37 50.5 18.5 527304 31 53 35 44 12 539305 32 45 35 40 8 547
306 33 51 38 44.5 12.5 559.5307 34 58 35 46.5 14.5 574308 35 55 30 42.5 10.5 584.5309 36 55 30 42.5 10.5 595
310 37 50 29 39.5 7.5 602.5311 38 38 21 29.5 -2.5 600312 39 40 18 29 -3 597313 40 41 15 28 -4 593
314 41 46 20 33 1 594315 42 51 21 36 4 598316 43 55 26 40.5 8.5 606.5317 44 52 25 38.5 6.5 613318 45 54 28 41 9 622319 46 55 28 41.5 9.5 631.5
0
200
400
600
800
1000
1200
0 50 100 150 200
fr
e
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i
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d
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(
d
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day of frost year
Blanding, UT
1985-1986
320 47 55 28 41.5 9.5 641
321 48 56 30 43 11 652322 49 53 35 44 12 664323 50 56 40 48 16 680324 51 55 32 43.5 11.5 691.5
325 52 53 33 43 11 702.5326 53 49 33 41 9 711.5327 54 46 27 36.5 4.5 716328 55 55 24 39.5 7.5 723.5
329 56 48 25 36.5 4.5 728330 57 45 27 36 4 732331 58 45 23 34 2 734332 59 49 23 36 4 738333 60 50 30 40 8 746334 61 48 28 38 6 752335 62 52 19 35.5 3.5 755.5336 63 49 22 35.5 3.5 759337 64 48 21 34.5 2.5 761.5338 65 46 23 34.5 2.5 764339 66 52 32 42 10 774340 67 40 32 36 4 778341 68 41 28 34.5 2.5 780.5
342 69 44 25 34.5 2.5 783343 70 32 14 23 -9 774344 71 38 12 25 -7 767345 72 38 11 24.5 -7.5 759.5
346 73 41 14 27.5 -4.5 755347 74 44 17 30.5 -1.5 753.5348 75 44 21 32.5 0.5 754349 76 45 23 34 2 756
350 77 50 26 38 6 762351 78 50 28 39 7 769352 79 36 30 33 1 770353 80 40 26 33 1 771
354 81 42 26 34 2 773355 82 44 24 34 2 775356 83 40 20 30 -2 773357 84 40 21 30.5 -1.5 771.5358 85 44 20 32 0 771.5359 86 43 16 29.5 -2.5 769360 87 41 15 28 -4 765361 88 41 22 31.5 -0.5 764.5362 89 47 18 32.5 0.5 765363 90 45 20 32.5 0.5 765.5364 91 45 20 32.5 0.5 766365 92 43 17 30 -2 7641 93 42 18 30 -2 762
2 94 41 22 31.5 -0.5 761.53 95 40 21 30.5 -1.5 7604 96 45 23 34 2 7625 97 40 30 35 3 765
6 98 38 20 29 -3 7627 99 33 26 29.5 -2.5 759.58 100 40 19 29.5 -2.5 7579 101 37 9 23 -9 748
10 102 40 12 26 -6 74211 103 43 12 27.5 -4.5 737.512 104 44 14 29 -3 734.513 105 43 14 28.5 -3.5 731
14 106 39 16 27.5 -4.5 726.515 107 38 15 26.5 -5.5 72116 108 28 10 19 -13 70817 109 29 5 17 -15 69318 110 32 3 17.5 -14.5 678.519 111 27 8 17.5 -14.5 66420 112 33 7 20 -12 65221 113 37 4 20.5 -11.5 640.522 114 38 10 24 -8 632.523 115 38 13 25.5 -6.5 62624 116 43 14 28.5 -3.5 622.525 117 46 19 32.5 0.5 62326 118 52 21 36.5 4.5 627.5
27 119 50 23 36.5 4.5 63228 120 47 28 37.5 5.5 637.529 121 41 24 32.5 0.5 63830 122 46 26 36 4 642
31 123 44 33 38.5 6.5 648.532 124 52 23 37.5 5.5 65433 125 49 24 36.5 4.5 658.534 126 52 31 41.5 9.5 668
35 127 45 30 37.5 5.5 673.536 128 50 24 37 5 678.537 129 55 27 41 9 687.538 130 51 25 38 6 693.5
39 131 56 29 42.5 10.5 70440 132 54 29 41.5 9.5 713.541 133 50 30 40 8 721.542 134 54 33 43.5 11.5 73343 135 48 31 39.5 7.5 740.544 136 46 28 37 5 745.545 137 42 31 36.5 4.5 75046 138 41 23 32 0 75047 139 40 29 34.5 2.5 752.548 140 45 23 34 2 754.549 141 41 22 31.5 -0.5 75450 142 36 22 29 -3 75151 143 40 24 32 0 751
52 144 42 16 29 -3 74853 145 41 17 29 -3 74554 146 40 22 31 -1 74455 147 34 25 29.5 -2.5 741.5
56 148 35 13 24 -8 733.557 149 34 22 28 -4 729.558 150 38 17 27.5 -4.5 72559 151 45 8 26.5 -5.5 719.5
60 152 45 15 30 -2 717.561 153 52 18 35 3 720.562 154 55 26 40.5 8.5 72963 155 58 23 40.5 8.5 737.5
64 156 60 30 45 13 750.5
65 157 62 30 46 14 764.566 158 63 32 47.5 15.5 78067 159 49 35 42 10 79068 160 50 33 41.5 9.5 799.5
69 161 57 30 43.5 11.5 81170 162 56 29 42.5 10.5 821.571 163 60 29 44.5 12.5 83472 164 61 33 47 15 849
73 165 59 25 42 10 85974 166 45 31 38 6 86575 167 42 21 31.5 -0.5 864.576 168 49 23 36 4 868.577 169 57 24 40.5 8.5 87778 170 50 31 40.5 8.5 885.579 171 43 23 33 1 886.580 172 46 25 35.5 3.5 89081 173 33 26 29.5 -2.5 887.582 174 44 21 32.5 0.5 88883 175 46 25 35.5 3.5 891.584 176 48 22 35 3 894.585 177 51 20 35.5 3.5 898
86 178 41 23 32 0 89887 179 41 19 30 -2 89688 180 40 19 29.5 -2.5 893.589 181 55 13 34 2 895.5
90 182 62 23 42.5 10.5 90691 183 64 28 46 14 92092 184 64 37 50.5 18.5 938.593 185 67 28 47.5 15.5 954
94 186 47 31 39 7 96195 187 52 32 42 10 97196 188 57 33 45 13 98497 189 57 33 45 13 997
98 190 61 32 46.5 14.5 1011.599 191 64 38 51 19 1030.5100 192 65 39 52 20 1050.5101 193 63 37 50 18 1068.5102 194 54 35 44.5 12.5 1081103 195 56 27 41.5 9.5 1090.5104 196 69 30 49.5 17.5 1108105 197 73 37 55 23 1131106 198 78 43 60.5 28.5 1159.5107 199 79 45 62 30 1189.5108 200 71 40 55.5 23.5 1213109 201 58 31 44.5 12.5 1225.5110 202 58 23 40.5 8.5 1234
111 203 68 33 50.5 18.5 1252.5112 204 71 33 52 20 1272.5113 205 77 42 59.5 27.5 1300114 206 79 46 62.5 30.5 1330.5
115 207 79 47 63 31 1361.5116 208 78 45 61.5 29.5 1391117 209 78 46 62 30 1421118 210 76 47 61.5 29.5 1450.5
119 211 78 44 61 29 1479.5120 212 74 46 60 28 1507.5121 213 69 44 56.5 24.5 1532122 214 62 40 51 19 1551
123 215 65 39 52 20 1571124 216 70 43 56.5 24.5 1595.5125 217 75 43 59 27 1622.5126 218 75 45 60 28 1650.5127 219 76 46 61 29 1679.5128 220 78 44 61 29 1708.5129 221 81 47 64 32 1740.5130 222 80 47 63.5 31.5 1772131 223 81 46 63.5 31.5 1803.5132 224 79 47 63 31 1834.5133 225 76 48 62 30 1864.5134 226 84 49 66.5 34.5 1899135 227 75 50 62.5 30.5 1929.5
136 228 73 46 59.5 27.5 1957137 229 75 47 61 29 1986138 230 72 49 60.5 28.5 2014.5139 231 72 47 59.5 27.5 2042
140 232 66 46 56 24 2066141 233 67 59 63 31 2097142 234 71 42 56.5 24.5 2121.5143 235 72 46 59 27 2148.5
144 236 68 41 54.5 22.5 2171145 237 62 42 52 20 2191146 238 59 39 49 17 2208147 239 62 36 49 17 2225
148 240 66 37 51.5 19.5 2244.5149 241 68 38 53 21 2265.5150 242 77 41 59 27 2292.5151 243 82 45 63.5 31.5 2324152 244 80 49 64.5 32.5 2356.5153 245 80 47 63.5 31.5 2388154 246 87 54 70.5 38.5 2426.5155 247 86 54 70 38 2464.5156 248 84 54 69 37 2501.5157 249 85 53 69 37 2538.5158 250 85 54 69.5 37.5 2576159 251 75 56 65.5 33.5 2609.5160 252 81 49 65 33 2642.5
161 253 84 51 67.5 35.5 2678162 254 88 53 70.5 38.5 2716.5163 255 90 58 74 42 2758.5164 256 91 62 76.5 44.5 2803
165 257 96 58 77 45 2848166 258 89 60 74.5 42.5 2890.5167 259 84 50 67 35 2925.5168 260 85 49 67 35 2960.5
169 261 85 50 67.5 35.5 2996170 262 88 50 69 37 3033171 263 87 50 68.5 36.5 3069.5172 264 89 51 70 38 3107.5
173 265 88 51 69.5 37.5 3145
174 266 88 57 72.5 40.5 3185.5175 267 92 57 74.5 42.5 3228176 268 90 59 74.5 42.5 3270.5177 269 91 60 75.5 43.5 3314
178 270 90 56 73 41 3355179 271 89 57 73 41 3396180 272 79 53 66 34 3430181 273 88 52 70 38 3468
182 274 90 58 74 42 3510183 275 88 53 70.5 38.5 3548.5184 276 90 51 70.5 38.5 3587185 277 86 50 68 36 3623186 278 90 50 70 38 3661187 279 89 50 69.5 37.5 3698.5188 280 90 54 72 40 3738.5189 281 89 54 71.5 39.5 3778190 282 90 52 71 39 3817191 283 91 47 69 37 3854192 284 86 57 71.5 39.5 3893.5193 285 86 55 70.5 38.5 3932194 286 89 55 72 40 3972
195 287 91 57 74 42 4014196 288 93 58 75.5 43.5 4057.5197 289 89 57 73 41 4098.5198 290 77 54 65.5 33.5 4132
199 291 79 53 66 34 4166200 292 84 49 66.5 34.5 4200.5201 293 77 52 64.5 32.5 4233202 294 89 58 73.5 41.5 4274.5
203 295 91 58 74.5 42.5 4317204 296 92 53 72.5 40.5 4357.5205 297 95 59 77 45 4402.5206 298 88 62 75 43 4445.5
207 299 89 60 74.5 42.5 4488208 300 90 59 74.5 42.5 4530.5209 301 86 59 72.5 40.5 4571210 302 79 61 70 38 4609211 303 80 62 71 39 4648212 304 76 59 67.5 35.5 4683.5213 305 90 53 71.5 39.5 4723214 306 91 57 74 42 4765215 307 85 63 74 42 4807216 308 90 58 74 42 4849217 309 90 58 74 42 4891218 310 88 59 73.5 41.5 4932.5219 311 76 59 67.5 35.5 4968
220 312 80 53 66.5 34.5 5002.5221 313 84 54 69 37 5039.5222 314 88 57 72.5 40.5 5080223 315 87 56 71.5 39.5 5119.5
224 316 85 59 72 40 5159.5225 317 83 54 68.5 36.5 5196226 318 81 52 66.5 34.5 5230.5227 319 81 55 68 36 5266.5
228 320 83 47 65 33 5299.5229 321 88 49 68.5 36.5 5336230 322 90 55 72.5 40.5 5376.5231 323 91 54 72.5 40.5 5417
232 324 85 59 72 40 5457233 325 85 57 71 39 5496234 326 85 58 71.5 39.5 5535.5235 327 73 57 65 33 5568.5236 328 71 56 63.5 31.5 5600237 329 74 54 64 32 5632238 330 76 46 61 29 5661239 331 76 46 61 29 5690240 332 81 49 65 33 5723241 333 81 49 65 33 5756242 334 86 52 69 37 5793243 335 87 53 70 38 5831244 336 89 55 72 40 5871
245 337 86 56 71 39 5910246 338 83 54 68.5 36.5 5946.5247 339 79 54 66.5 34.5 5981248 340 76 52 64 32 6013
249 341 76 49 62.5 30.5 6043.5250 342 77 49 63 31 6074.5251 343 79 50 64.5 32.5 6107252 344 80 51 65.5 33.5 6140.5
253 345 82 50 66 34 6174.5254 346 81 50 65.5 33.5 6208255 347 80 48 64 32 6240256 348 70 47 58.5 26.5 6266.5
257 349 64 41 52.5 20.5 6287258 350 76 38 57 25 6312259 351 77 45 61 29 6341260 352 78 52 65 33 6374261 353 79 46 62.5 30.5 6404.5262 354 80 48 64 32 6436.5263 355 81 54 67.5 35.5 6472264 356 81 56 68.5 36.5 6508.5265 357 82 48 65 33 6541.5266 358 84 49 66.5 34.5 6576267 359 77 48 62.5 30.5 6606.5268 360 76 53 64.5 32.5 6639269 361 77 48 62.5 30.5 6669.5
270 362 78 50 64 32 6701.5 82 775 length of freeze (day) 34
271 363 78 47 62.5 30.5 6732 116 622 frost depth (oF-day)153272 364 80 41 60.5 28.5 6760.5 average temperature 50.6273 365 78 42 60 28 6788.5
1987-1988 day of frost year degree cumulative
day of year (consecutive date) max. temp. min. temp avg. temp day (
oF) degree day (
oF)274 1 80 44 62 30 30275 2 82 48 65 33 63276 3 81 45 63 31 94
0
100
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300
400
500
600
700
800
900
0 50 100 150 200
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day of frost year
Blanding, UT
1986-1987
277 4 81 45 63 31 125
278 5 79 52 65.5 33.5 158.5279 6 80 47 63.5 31.5 190280 7 80 44 62 30 220281 8 78 44 61 29 249
282 9 76 43 59.5 27.5 276.5283 10 76 45 60.5 28.5 305284 11 76 46 61 29 334285 12 70 52 61 29 363
286 13 52 42 47 15 378287 14 53 39 46 14 392288 15 59 36 47.5 15.5 407.5289 16 64 36 50 18 425.5290 17 66 37 51.5 19.5 445291 18 67 37 52 20 465292 19 67 39 53 21 486293 20 65 35 50 18 504294 21 64 34 49 17 521295 22 68 39 53.5 21.5 542.5296 23 62 42 52 20 562.5297 24 55 43 49 17 579.5298 25 61 42 51.5 19.5 599
299 26 67 34 50.5 18.5 617.5300 27 66 38 52 20 637.5301 28 67 42 54.5 22.5 660302 29 51 42 46.5 14.5 674.5
303 30 53 39 46 14 688.5304 31 57 36 46.5 14.5 703305 32 50 44 47 15 718306 33 52 41 46.5 14.5 732.5
307 34 62 42 52 20 752.5308 35 65 41 53 21 773.5309 36 60 43 51.5 19.5 793310 37 50 34 42 10 803
311 38 53 34 43.5 11.5 814.5312 39 58 32 45 13 827.5313 40 56 33 44.5 12.5 840314 41 51 33 42 10 850315 42 54 33 43.5 11.5 861.5316 43 53 28 40.5 8.5 870317 44 51 29 40 8 878318 45 47 35 41 9 887319 46 42 23 32.5 0.5 887.5320 47 42 19 30.5 -1.5 886321 48 44 21 32.5 0.5 886.5322 49 46 16 31 -1 885.5323 50 46 19 32.5 0.5 886
324 51 52 20 36 4 890325 52 49 28 38.5 6.5 896.5326 53 48 24 36 4 900.5327 54 48 25 36.5 4.5 905
328 55 48 21 34.5 2.5 907.5329 56 44 21 32.5 0.5 908330 57 38 22 30 -2 906331 58 39 16 27.5 -4.5 901.5
332 59 38 15 26.5 -5.5 896333 60 41 21 31 -1 895334 61 47 19 33 1 896335 62 42 21 31.5 -0.5 895.5
336 63 43 23 33 1 896.5337 64 51 25 38 6 902.5338 65 54 31 42.5 10.5 913339 66 52 33 42.5 10.5 923.5340 67 48 28 38 6 929.5341 68 48 30 39 7 936.5342 69 41 20 30.5 -1.5 935343 70 44 20 32 0 935344 71 50 27 38.5 6.5 941.5345 72 50 24 37 5 946.5346 73 34 16 25 -7 939.5347 74 23 16 19.5 -12.5 927348 75 26 11 18.5 -13.5 913.5
349 76 24 11 17.5 -14.5 899350 77 30 12 21 -11 888351 78 40 25 32.5 0.5 888.5352 79 38 30 34 2 890.5
353 80 32 26 29 -3 887.5354 81 35 19 27 -5 882.5355 82 34 18 26 -6 876.5356 83 42 19 30.5 -1.5 875
357 84 34 15 24.5 -7.5 867.5358 85 31 15 23 -9 858.5359 86 31 16 23.5 -8.5 850360 87 27 7 17 -15 835
361 88 36 6 21 -11 824362 89 32 12 22 -10 814363 90 38 15 26.5 -5.5 808.5364 91 32 17 24.5 -7.5 801365 92 31 7 19 -13 7881 93 32 5 18.5 -13.5 774.52 94 29 5 17 -15 759.53 95 29 7 18 -14 745.54 96 29 20 24.5 -7.5 7385 97 35 26 30.5 -1.5 736.56 98 39 24 31.5 -0.5 7367 99 35 14 24.5 -7.5 728.58 100 35 15 25 -7 721.5
9 101 32 16 24 -8 713.510 102 34 13 23.5 -8.5 70511 103 43 18 30.5 -1.5 703.512 104 34 12 23 -9 694.5
13 105 38 11 24.5 -7.5 68714 106 38 11 24.5 -7.5 679.515 107 32 13 22.5 -9.5 67016 108 38 25 31.5 -0.5 669.5
17 109 30 26 28 -4 665.518 110 32 26 29 -3 662.519 111 26 13 19.5 -12.5 65020 112 28 -1 13.5 -18.5 631.5
21 113 29 4 16.5 -15.5 616
22 114 38 4 21 -11 60523 115 35 9 22 -10 59524 116 35 6 20.5 -11.5 583.525 117 33 6 19.5 -12.5 571
26 118 40 11 25.5 -6.5 564.527 119 42 12 27 -5 559.528 120 45 21 33 1 560.529 121 48 23 35.5 3.5 564
30 122 45 22 33.5 1.5 565.531 123 39 25 32 0 565.532 124 41 25 33 1 566.533 125 35 28 31.5 -0.5 56634 126 41 19 30 -2 56435 127 42 12 27 -5 55936 128 44 12 28 -4 55537 129 40 11 25.5 -6.5 548.538 130 39 16 27.5 -4.5 54439 131 45 17 31 -1 54340 132 44 21 32.5 0.5 543.541 133 44 21 32.5 0.5 54442 134 47 19 33 1 545
43 135 49 21 35 3 54844 136 47 23 35 3 55145 137 42 16 29 -3 54846 138 43 18 30.5 -1.5 546.5
47 139 40 21 30.5 -1.5 54548 140 42 17 29.5 -2.5 542.549 141 40 16 28 -4 538.550 142 45 21 33 1 539.5
51 143 51 20 35.5 3.5 54352 144 51 22 36.5 4.5 547.553 145 55 22 38.5 6.5 55454 146 54 26 40 8 562
55 147 57 28 42.5 10.5 572.556 148 58 28 43 11 583.557 149 60 33 46.5 14.5 59858 150 54 36 45 13 61159 151 57 37 47 15 62660 152 60 34 47 15 64161 153 54 33 43.5 11.5 652.562 154 54 29 41.5 9.5 66263 155 57 30 43.5 11.5 673.564 156 57 31 44 12 685.565 157 52 29 40.5 8.5 69466 158 56 27 41.5 9.5 703.567 159 38 26 32 0 703.5
68 160 49 16 32.5 0.5 70469 161 57 24 40.5 8.5 712.570 162 46 23 34.5 2.5 71571 163 39 21 30 -2 713
72 164 39 21 30 -2 71173 165 38 18 28 -4 70774 166 47 17 32 0 70775 167 53 22 37.5 5.5 712.5
76 168 41 24 32.5 0.5 71377 169 45 20 32.5 0.5 713.578 170 48 18 33 1 714.579 171 58 22 40 8 722.5
80 172 66 25 45.5 13.5 73681 173 66 33 49.5 17.5 753.582 174 65 34 49.5 17.5 77183 175 66 30 48 16 78784 176 54 33 43.5 11.5 798.585 177 66 29 47.5 15.5 81486 178 70 35 52.5 20.5 834.587 179 72 34 53 21 855.588 180 40 23 31.5 -0.5 85589 181 48 13 30.5 -1.5 853.590 182 47 31 39 7 860.591 183 44 20 32 0 860.592 184 54 26 40 8 868.5
93 185 65 29 47 15 883.594 186 66 32 49 17 900.595 187 63 35 49 17 917.596 188 63 31 47 15 932.5
97 189 73 39 56 24 956.598 190 75 40 57.5 25.5 98299 191 69 35 52 20 1002100 192 56 29 42.5 10.5 1012.5
101 193 69 27 48 16 1028.5102 194 74 34 54 22 1050.5103 195 76 38 57 25 1075.5104 196 77 42 59.5 27.5 1103
105 197 66 47 56.5 24.5 1127.5106 198 60 43 51.5 19.5 1147107 199 59 42 50.5 18.5 1165.5108 200 53 34 43.5 11.5 1177109 201 50 34 42 10 1187110 202 61 35 48 16 1203111 203 61 37 49 17 1220112 204 52 46 49 17 1237113 205 45 33 39 7 1244114 206 53 29 41 9 1253115 207 56 35 45.5 13.5 1266.5116 208 62 34 48 16 1282.5117 209 63 32 47.5 15.5 1298
118 210 71 38 54.5 22.5 1320.5119 211 67 43 55 23 1343.5120 212 74 39 56.5 24.5 1368121 213 73 40 56.5 24.5 1392.5
122 214 49 34 41.5 9.5 1402123 215 56 31 43.5 11.5 1413.5124 216 66 30 48 16 1429.5125 217 74 40 57 25 1454.5
126 218 73 40 56.5 24.5 1479127 219 52 35 43.5 11.5 1490.5128 220 58 27 42.5 10.5 1501129 221 64 34 49 17 1518
130 222 70 34 52 20 1538
131 223 73 43 58 26 1564132 224 82 43 62.5 30.5 1594.5133 225 82 44 63 31 1625.5134 226 83 47 65 33 1658.5
135 227 83 51 67 35 1693.5136 228 86 53 69.5 37.5 1731137 229 85 50 67.5 35.5 1766.5138 230 74 48 61 29 1795.5
139 231 66 45 55.5 23.5 1819140 232 61 40 50.5 18.5 1837.5141 233 64 45 54.5 22.5 1860142 234 72 40 56 24 1884143 235 74 44 59 27 1911144 236 81 44 62.5 30.5 1941.5145 237 83 47 65 33 1974.5146 238 80 51 65.5 33.5 2008147 239 82 50 66 34 2042148 240 81 50 65.5 33.5 2075.5149 241 82 50 66 34 2109.5150 242 76 38 57 25 2134.5151 243 54 34 44 12 2146.5
152 244 64 33 48.5 16.5 2163153 245 76 37 56.5 24.5 2187.5154 246 83 51 67 35 2222.5155 247 88 59 73.5 41.5 2264
156 248 89 56 72.5 40.5 2304.5157 249 85 55 70 38 2342.5158 250 81 48 64.5 32.5 2375159 251 81 46 63.5 31.5 2406.5
160 252 82 44 63 31 2437.5161 253 87 53 70 38 2475.5162 254 85 50 67.5 35.5 2511163 255 86 58 72 40 2551
164 256 85 48 66.5 34.5 2585.5165 257 79 50 64.5 32.5 2618166 258 87 51 69 37 2655167 259 88 57 72.5 40.5 2695.5168 260 90 53 71.5 39.5 2735169 261 90 60 75 43 2778170 262 92 60 76 44 2822171 263 90 61 75.5 43.5 2865.5172 264 92 60 76 44 2909.5173 265 95 60 77.5 45.5 2955174 266 94 65 79.5 47.5 3002.5175 267 94 62 78 46 3048.5176 268 96 58 77 45 3093.5
177 269 87 58 72.5 40.5 3134178 270 84 55 69.5 37.5 3171.5179 271 82 57 69.5 37.5 3209180 272 67 58 62.5 30.5 3239.5
181 273 72 56 64 32 3271.5182 274 86 60 73 41 3312.5183 275 90 60 75 43 3355.5184 276 90 57 73.5 41.5 3397
185 277 89 59 74 42 3439186 278 86 55 70.5 38.5 3477.5187 279 88 57 72.5 40.5 3518188 280 89 57 73 41 3559
189 281 90 58 74 42 3601190 282 92 58 75 43 3644191 283 85 59 72 40 3684192 284 88 54 71 39 3723193 285 90 56 73 41 3764194 286 89 54 71.5 39.5 3803.5195 287 94 58 76 44 3847.5196 288 92 59 75.5 43.5 3891197 289 93 61 77 45 3936198 290 89 60 74.5 42.5 3978.5199 291 93 59 76 44 4022.5200 292 92 60 76 44 4066.5201 293 94 57 75.5 43.5 4110
202 294 91 59 75 43 4153203 295 93 59 76 44 4197204 296 93 63 78 46 4243205 297 92 59 75.5 43.5 4286.5
206 298 91 62 76.5 44.5 4331207 299 92 58 75 43 4374208 300 93 57 75 43 4417209 301 89 58 73.5 41.5 4458.5
210 302 89 57 73 41 4499.5211 303 87 63 75 43 4542.5212 304 86 57 71.5 39.5 4582213 305 82 56 69 37 4619
214 306 85 55 70 38 4657215 307 88 58 73 41 4698216 308 89 60 74.5 42.5 4740.5217 309 87 58 72.5 40.5 4781218 310 89 58 73.5 41.5 4822.5219 311 84 61 72.5 40.5 4863220 312 83 57 70 38 4901221 313 87 55 71 39 4940222 314 89 54 71.5 39.5 4979.5223 315 88 56 72 40 5019.5224 316 91 55 73 41 5060.5225 317 81 53 67 35 5095.5226 318 87 57 72 40 5135.5
227 319 92 56 74 42 5177.5228 320 86 61 73.5 41.5 5219229 321 84 57 70.5 38.5 5257.5230 322 86 56 71 39 5296.5
231 323 85 57 71 39 5335.5232 324 92 59 75.5 43.5 5379233 325 89 59 74 42 5421234 326 74 58 66 34 5455
235 327 87 58 72.5 40.5 5495.5236 328 93 57 75 43 5538.5237 329 87 62 74.5 42.5 5581238 330 84 57 70.5 38.5 5619.5
239 331 87 67 77 45 5664.5
240 332 84 56 70 38 5702.5241 333 83 56 69.5 37.5 5740242 334 83 54 68.5 36.5 5776.5243 335 85 54 69.5 37.5 5814
244 336 84 54 69 37 5851245 337 85 53 69 37 5888246 338 83 54 68.5 36.5 5924.5247 339 86 57 71.5 39.5 5964
248 340 83 54 68.5 36.5 6000.5249 341 84 52 68 36 6036.5250 342 85 48 66.5 34.5 6071251 343 89 52 70.5 38.5 6109.5252 344 90 54 72 40 6149.5253 345 89 55 72 40 6189.5254 346 75 51 63 31 6220.5255 347 75 48 61.5 29.5 6250256 348 57 45 51 19 6269257 349 63 41 52 20 6289258 350 66 39 52.5 20.5 6309.5259 351 72 42 57 25 6334.5260 352 77 44 60.5 28.5 6363
261 353 81 47 64 32 6395262 354 76 46 61 29 6424263 355 70 33 51.5 19.5 6443.5264 356 77 43 60 28 6471.5
265 357 70 53 61.5 29.5 6501266 358 68 39 53.5 21.5 6522.5267 359 75 42 58.5 26.5 6549268 360 76 43 59.5 27.5 6576.5
269 361 75 46 60.5 28.5 6605270 362 75 45 60 28 6633 73 939.5 length of freeze (day) 70
271 363 75 45 60 28 6661 143 543 frost depth (oF-day)396.5272 364 66 45 55.5 23.5 6684.5 average temperature 50.4273 365 71 40 55.5 23.5 6708274 366 78 48 63 31 6739
1989-1990 day of frost year degree cumulative
day of year (consecutive date) max. temp. min. temp avg. temp day (
oF) degree day (
oF)
274 1 77 47 62 30 30275 2 77 48 62.5 30.5 60.5276 3 77 50 63.5 31.5 92277 4 62 46 54 22 114
278 5 70 41 55.5 23.5 137.5279 6 70 40 55 23 160.5280 7 71 45 58 26 186.5281 8 73 43 58 26 212.5
282 9 77 45 61 29 241.5283 10 77 46 61.5 29.5 271284 11 79 47 63 31 302285 12 77 47 62 30 332
286 13 76 49 62.5 30.5 362.5287 14 76 50 63 31 393.5288 15 72 46 59 27 420.5289 16 65 39 52 20 440.5290 17 65 40 52.5 20.5 461291 18 64 38 51 19 480292 19 62 32 47 15 495293 20 60 38 49 17 512294 21 61 41 51 19 531295 22 60 39 49.5 17.5 548.5296 23 62 45 53.5 21.5 570297 24 69 40 54.5 22.5 592.5298 25 65 44 54.5 22.5 615
299 26 55 32 43.5 11.5 626.5300 27 56 31 43.5 11.5 638301 28 54 31 42.5 10.5 648.5302 29 47 23 35 3 651.5
303 30 50 21 35.5 3.5 655304 31 52 26 39 7 662305 32 49 21 35 3 665306 33 52 23 37.5 5.5 670.5
307 34 53 25 39 7 677.5308 35 56 31 43.5 11.5 689309 36 62 34 48 16 705310 37 58 35 46.5 14.5 719.5
311 38 58 31 44.5 12.5 732312 39 56 31 43.5 11.5 743.5313 40 60 32 46 14 757.5314 41 62 37 49.5 17.5 775315 42 65 38 51.5 19.5 794.5316 43 68 37 52.5 20.5 815317 44 61 37 49 17 832318 45 64 33 48.5 16.5 848.5319 46 51 22 36.5 4.5 853320 47 55 28 41.5 9.5 862.5321 48 54 29 41.5 9.5 872322 49 54 29 41.5 9.5 881.5323 50 60 33 46.5 14.5 896
324 51 59 35 47 15 911325 52 60 36 48 16 927326 53 62 36 49 17 944327 54 55 34 44.5 12.5 956.5
328 55 49 34 41.5 9.5 966329 56 55 34 44.5 12.5 978.5330 57 55 31 43 11 989.5331 58 38 20 29 -3 986.5
332 59 42 18 30 -2 984.5333 60 44 20 32 0 984.5334 61 50 22 36 4 988.5335 62 55 19 37 5 993.5
336 63 49 23 36 4 997.5337 64 45 26 35.5 3.5 1001338 65 53 27 40 8 1009339 66 57 29 43 11 1020340 67 51 32 41.5 9.5 1029.5341 68 49 26 37.5 5.5 1035
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0 50 100 150 200 250
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day of frost year
Blanding, UT
1987-1988
342 69 45 24 34.5 2.5 1037.5
343 70 46 24 35 3 1040.5344 71 40 18 29 -3 1037.5345 72 32 13 22.5 -9.5 1028346 73 36 10 23 -9 1019
347 74 39 14 26.5 -5.5 1013.5348 75 44 16 30 -2 1011.5349 76 40 23 31.5 -0.5 1011350 77 43 18 30.5 -1.5 1009.5
351 78 37 16 26.5 -5.5 1004352 79 42 26 34 2 1006353 80 42 21 31.5 -0.5 1005.5354 81 47 20 33.5 1.5 1007355 82 47 22 34.5 2.5 1009.5356 83 48 25 36.5 4.5 1014357 84 49 24 36.5 4.5 1018.5358 85 48 25 36.5 4.5 1023359 86 52 22 37 5 1028360 87 46 20 33 1 1029361 88 46 20 33 1 1030362 89 41 26 33.5 1.5 1031.5363 90 48 26 37 5 1036.5
364 91 41 18 29.5 -2.5 1034365 92 43 17 30 -2 10321 93 42 0 21 -11 10212 94 40 26 33 1 1022
3 95 31 10 20.5 -11.5 1010.54 96 27 4 15.5 -16.5 9945 97 38 8 23 -9 9856 98 31 12 21.5 -10.5 974.5
7 99 35 15 25 -7 967.58 100 37 18 27.5 -4.5 9639 101 52 29 40.5 8.5 971.510 102 51 28 39.5 7.5 979
11 103 51 28 39.5 7.5 986.512 104 50 29 39.5 7.5 99413 105 47 30 38.5 6.5 1000.514 106 41 28 34.5 2.5 100315 107 39 25 32 0 100316 108 40 21 30.5 -1.5 1001.517 109 34 21 27.5 -4.5 99718 110 36 25 30.5 -1.5 995.519 111 30 22 26 -6 989.520 112 35 14 24.5 -7.5 98221 113 30 11 20.5 -11.5 970.522 114 32 12 22 -10 960.523 115 30 6 18 -14 946.5
24 116 32 10 21 -11 935.525 117 35 11 23 -9 926.526 118 39 14 26.5 -5.5 92127 119 30 14 22 -10 911
28 120 29 8 18.5 -13.5 897.529 121 37 17 27 -5 892.530 122 40 18 29 -3 889.531 123 35 29 32 0 889.5
32 124 32 24 28 -4 885.533 125 39 16 27.5 -4.5 88134 126 37 14 25.5 -6.5 874.535 127 39 16 27.5 -4.5 870
36 128 44 22 33 1 87137 129 42 20 31 -1 87038 130 45 24 34.5 2.5 872.539 131 40 30 35 3 875.540 132 47 19 33 1 876.541 133 49 31 40 8 884.542 134 52 33 42.5 10.5 89543 135 46 33 39.5 7.5 902.544 136 55 30 42.5 10.5 91345 137 36 18 27 -5 90846 138 26 5 15.5 -16.5 891.547 139 27 4 15.5 -16.5 87548 140 41 11 26 -6 869
49 141 40 26 33 1 87050 142 39 30 34.5 2.5 872.551 143 37 23 30 -2 870.552 144 47 17 32 0 870.5
53 145 50 25 37.5 5.5 87654 146 56 20 38 6 88255 147 56 30 43 11 89356 148 57 33 45 13 906
57 149 61 34 47.5 15.5 921.558 150 56 39 47.5 15.5 93759 151 55 34 44.5 12.5 949.560 152 50 32 41 9 958.5
61 153 55 32 43.5 11.5 97062 154 48 37 42.5 10.5 980.563 155 57 34 45.5 13.5 99464 156 53 34 43.5 11.5 1005.565 157 42 27 34.5 2.5 100866 158 54 27 40.5 8.5 1016.567 159 58 32 45 13 1029.568 160 65 37 51 19 1048.569 161 58 39 48.5 16.5 106570 162 45 35 40 8 107371 163 33 23 28 -4 106972 164 34 21 27.5 -4.5 1064.573 165 39 17 28 -4 1060.5
74 166 43 24 33.5 1.5 106275 167 48 24 36 4 106676 168 55 23 39 7 107377 169 61 27 44 12 1085
78 170 62 34 48 16 110179 171 62 40 51 19 112080 172 70 40 55 23 114381 173 73 37 55 23 1166
82 174 73 47 60 28 119483 175 71 39 55 23 121784 176 70 40 55 23 124085 177 68 40 54 22 1262
86 178 64 42 53 21 1283
87 179 60 37 48.5 16.5 1299.588 180 54 34 44 12 1311.589 181 47 32 39.5 7.5 131990 182 57 32 44.5 12.5 1331.5
91 183 65 34 49.5 17.5 134992 184 64 37 50.5 18.5 1367.593 185 64 36 50 18 1385.594 186 67 38 52.5 20.5 1406
95 187 68 42 55 23 142996 188 67 35 51 19 144897 189 68 40 54 22 147098 190 61 41 51 19 148999 191 63 38 50.5 18.5 1507.5100 192 71 37 54 22 1529.5101 193 72 40 56 24 1553.5102 194 74 44 59 27 1580.5103 195 70 41 55.5 23.5 1604104 196 78 50 64 32 1636105 197 81 47 64 32 1668106 198 76 46 61 29 1697107 199 71 48 59.5 27.5 1724.5
108 200 57 40 48.5 16.5 1741109 201 61 39 50 18 1759110 202 72 40 56 24 1783111 203 78 44 61 29 1812
112 204 74 42 58 26 1838113 205 72 42 57 25 1863114 206 52 36 44 12 1875115 207 61 35 48 16 1891
116 208 66 37 51.5 19.5 1910.5117 209 71 35 53 21 1931.5118 210 80 47 63.5 31.5 1963119 211 41 33 37 5 1968
120 212 51 31 41 9 1977121 213 48 34 41 9 1986122 214 61 36 48.5 16.5 2002.5123 215 68 35 51.5 19.5 2022124 216 67 42 54.5 22.5 2044.5125 217 73 44 58.5 26.5 2071126 218 77 44 60.5 28.5 2099.5127 219 79 47 63 31 2130.5128 220 77 48 62.5 30.5 2161129 221 65 32 48.5 16.5 2177.5130 222 78 42 60 28 2205.5131 223 70 44 57 25 2230.5132 224 73 40 56.5 24.5 2255
133 225 77 44 60.5 28.5 2283.5134 226 77 47 62 30 2313.5135 227 74 45 59.5 27.5 2341136 228 71 38 54.5 22.5 2363.5
137 229 81 45 63 31 2394.5138 230 78 45 61.5 29.5 2424139 231 74 56 65 33 2457140 232 78 57 67.5 35.5 2492.5
141 233 83 47 65 33 2525.5142 234 87 54 70.5 38.5 2564143 235 84 52 68 36 2600144 236 79 51 65 33 2633
145 237 79 46 62.5 30.5 2663.5146 238 76 47 61.5 29.5 2693147 239 82 49 65.5 33.5 2726.5148 240 78 48 63 31 2757.5149 241 67 42 54.5 22.5 2780150 242 73 44 58.5 26.5 2806.5151 243 76 45 60.5 28.5 2835152 244 70 46 58 26 2861153 245 76 33 54.5 22.5 2883.5154 246 87 50 68.5 36.5 2920155 247 93 56 74.5 42.5 2962.5156 248 94 59 76.5 44.5 3007157 249 92 58 75 43 3050
158 250 89 56 72.5 40.5 3090.5159 251 95 57 76 44 3134.5160 252 94 61 77.5 45.5 3180161 253 77 56 66.5 34.5 3214.5
162 254 82 51 66.5 34.5 3249163 255 85 54 69.5 37.5 3286.5164 256 87 51 69 37 3323.5165 257 85 53 69 37 3360.5
166 258 82 52 67 35 3395.5167 259 79 46 62.5 30.5 3426168 260 89 50 69.5 37.5 3463.5169 261 93 56 74.5 42.5 3506
170 262 87 57 72 40 3546171 263 90 54 72 40 3586172 264 90 57 73.5 41.5 3627.5173 265 96 58 77 45 3672.5174 266 97 60 78.5 46.5 3719175 267 100 64 82 50 3769176 268 101 66 83.5 51.5 3820.5177 269 102 65 83.5 51.5 3872178 270 102 65 83.5 51.5 3923.5179 271 100 63 81.5 49.5 3973180 272 101 65 83 51 4024181 273 102 68 85 53 4077182 274 97 59 78 46 4123
183 275 98 66 82 50 4173184 276 90 60 75 43 4216185 277 92 60 76 44 4260186 278 85 61 73 41 4301
187 279 93 58 75.5 43.5 4344.5188 280 86 56 71 39 4383.5189 281 77 55 66 34 4417.5190 282 86 51 68.5 36.5 4454
191 283 90 56 73 41 4495192 284 93 60 76.5 44.5 4539.5193 285 94 57 75.5 43.5 4583194 286 91 60 75.5 43.5 4626.5
195 287 85 59 72 40 4666.5
196 288 85 55 70 38 4704.5197 289 92 56 74 42 4746.5198 290 93 59 76 44 4790.5199 291 94 60 77 45 4835.5
200 292 90 60 75 43 4878.5201 293 92 58 75 43 4921.5202 294 90 61 75.5 43.5 4965203 295 92 57 74.5 42.5 5007.5
204 296 93 59 76 44 5051.5205 297 88 59 73.5 41.5 5093206 298 90 55 72.5 40.5 5133.5207 299 91 56 73.5 41.5 5175208 300 93 58 75.5 43.5 5218.5209 301 96 60 78 46 5264.5210 302 93 59 76 44 5308.5211 303 92 55 73.5 41.5 5350212 304 90 55 72.5 40.5 5390.5213 305 89 57 73 41 5431.5214 306 86 58 72 40 5471.5215 307 90 53 71.5 39.5 5511216 308 91 57 74 42 5553
217 309 88 58 73 41 5594218 310 88 50 69 37 5631219 311 91 52 71.5 39.5 5670.5220 312 96 57 76.5 44.5 5715
221 313 94 61 77.5 45.5 5760.5222 314 95 60 77.5 45.5 5806223 315 95 60 77.5 45.5 5851.5224 316 88 55 71.5 39.5 5891
225 317 69 50 59.5 27.5 5918.5226 318 76 53 64.5 32.5 5951227 319 79 51 65 33 5984228 320 74 54 64 32 6016
229 321 85 52 68.5 36.5 6052.5230 322 86 54 70 38 6090.5231 323 85 51 68 36 6126.5232 324 87 52 69.5 37.5 6164233 325 85 52 68.5 36.5 6200.5234 326 87 55 71 39 6239.5235 327 87 53 70 38 6277.5236 328 87 55 71 39 6316.5237 329 86 54 70 38 6354.5238 330 87 53 70 38 6392.5239 331 90 57 73.5 41.5 6434240 332 94 61 77.5 45.5 6479.5241 333 95 62 78.5 46.5 6526
242 334 93 64 78.5 46.5 6572.5243 335 91 63 77 45 6617.5244 336 92 63 77.5 45.5 6663245 337 85 59 72 40 6703
246 338 90 59 74.5 42.5 6745.5247 339 82 58 70 38 6783.5248 340 81 58 69.5 37.5 6821249 341 81 59 70 38 6859
250 342 86 56 71 39 6898251 343 88 57 72.5 40.5 6938.5252 344 91 59 75 43 6981.5253 345 91 57 74 42 7023.5
254 346 92 61 76.5 44.5 7068255 347 94 62 78 46 7114256 348 94 61 77.5 45.5 7159.5257 349 94 59 76.5 44.5 7204258 350 88 60 74 42 7246259 351 75 59 67 35 7281260 352 80 53 66.5 34.5 7315.5261 353 69 51 60 28 7343.5262 354 70 45 57.5 25.5 7369263 355 60 50 55 23 7392264 356 74 51 62.5 30.5 7422.5265 357 82 52 67 35 7457.5266 358 68 56 62 30 7487.5
267 359 77 55 66 34 7521.5268 360 78 51 64.5 32.5 7554269 361 78 51 64.5 32.5 7586.5 107 1003 length of freeze (day) 34
270 362 78 55 66.5 34.5 7621 141 870 frost depth (oF-day)133271 363 76 53 64.5 32.5 7653.5 average temperature 53.1
272 364 76 49 62.5 30.5 7684273 365 74 48 61 29 7713
1990-1991 day of frost year degree cumulative
day of year (consecutive date) max. temp. min. temp avg. temp day (
oF) degree day (
oF)274 1 71 54 62.5 30.5 30.5275 2 56 49 52.5 20.5 51276 3 68 42 55 23 74277 4 73 44 58.5 26.5 100.5278 5 73 47 60 28 128.5279 6 75 47 61 29 157.5280 7 68 49 58.5 26.5 184
281 8 54 35 44.5 12.5 196.5282 9 59 31 45 13 209.5283 10 64 35 49.5 17.5 227284 11 70 39 54.5 22.5 249.5
285 12 66 31 48.5 16.5 266286 13 69 40 54.5 22.5 288.5287 14 73 43 58 26 314.5288 15 73 44 58.5 26.5 341
289 16 73 45 59 27 368290 17 65 41 53 21 389291 18 68 36 52 20 409292 19 59 43 51 19 428
293 20 54 35 44.5 12.5 440.5294 21 54 29 41.5 9.5 450295 22 56 32 44 12 462296 23 63 39 51 19 481297 24 69 40 54.5 22.5 503.5298 25 67 44 55.5 23.5 527
0
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1000
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1800
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0 50 100 150 200 250
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day of frost year
Blanding, UT
1989-1990
299 26 69 42 55.5 23.5 550.5
300 27 73 44 58.5 26.5 577301 28 70 46 58 26 603302 29 69 44 56.5 24.5 627.5303 30 69 40 54.5 22.5 650
304 31 62 45 53.5 21.5 671.5305 32 58 40 49 17 688.5306 33 58 40 49 17 705.5307 34 42 32 37 5 710.5
308 35 50 25 37.5 5.5 716309 36 49 31 40 8 724310 37 38 30 34 2 726311 38 35 28 31.5 -0.5 725.5312 39 48 24 36 4 729.5313 40 55 30 42.5 10.5 740314 41 65 33 49 17 757315 42 60 33 46.5 14.5 771.5316 43 64 34 49 17 788.5317 44 62 36 49 17 805.5318 45 62 37 49.5 17.5 823319 46 63 38 50.5 18.5 841.5320 47 56 38 47 15 856.5
321 48 58 41 49.5 17.5 874322 49 57 33 45 13 887323 50 54 31 42.5 10.5 897.5324 51 52 39 45.5 13.5 911
325 52 50 24 37 5 916326 53 48 23 35.5 3.5 919.5327 54 53 24 38.5 6.5 926328 55 54 29 41.5 9.5 935.5
329 56 53 31 42 10 945.5330 57 44 33 38.5 6.5 952331 58 37 23 30 -2 950332 59 39 15 27 -5 945
333 60 42 17 29.5 -2.5 942.5334 61 41 23 32 0 942.5335 62 44 21 32.5 0.5 943336 63 34 20 27 -5 938337 64 40 14 27 -5 933338 65 40 17 28.5 -3.5 929.5339 66 42 19 30.5 -1.5 928340 67 44 23 33.5 1.5 929.5341 68 44 22 33 1 930.5342 69 47 21 34 2 932.5343 70 49 23 36 4 936.5344 71 50 25 37.5 5.5 942345 72 50 24 37 5 947
346 73 41 32 36.5 4.5 951.5347 74 44 33 38.5 6.5 958348 75 36 26 31 -1 957349 76 38 20 29 -3 954
350 77 40 25 32.5 0.5 954.5351 78 38 25 31.5 -0.5 954352 79 32 18 25 -7 947353 80 38 17 27.5 -4.5 942.5
354 81 25 20 22.5 -9.5 933355 82 23 6 14.5 -17.5 915.5356 83 19 -3 8 -24 891.5357 84 19 -13 3 -29 862.5
358 85 15 -9 3 -29 833.5359 86 15 -5 5 -27 806.5360 87 27 -1 13 -19 787.5361 88 28 -1 13.5 -18.5 769362 89 34 6 20 -12 757363 90 36 19 27.5 -4.5 752.5364 91 23 -5 9 -23 729.5365 92 26 2 14 -18 711.51 93 27 4 15.5 -16.5 6952 94 28 7 17.5 -14.5 680.53 95 35 11 23 -9 671.54 96 36 21 28.5 -3.5 6685 97 43 27 35 3 671
6 98 44 25 34.5 2.5 673.57 99 38 28 33 1 674.58 100 48 29 38.5 6.5 6819 101 50 25 37.5 5.5 686.5
10 102 40 23 31.5 -0.5 68611 103 42 14 28 -4 68212 104 29 7 18 -14 66813 105 28 11 19.5 -12.5 655.5
14 106 40 12 26 -6 649.515 107 35 15 25 -7 642.516 108 41 23 32 0 642.517 109 39 14 26.5 -5.5 637
18 110 35 15 25 -7 63019 111 35 18 26.5 -5.5 624.520 112 35 11 23 -9 615.521 113 31 17 24 -8 607.522 114 30 7 18.5 -13.5 59423 115 29 7 18 -14 58024 116 32 9 20.5 -11.5 568.525 117 35 14 24.5 -7.5 56126 118 39 14 26.5 -5.5 555.527 119 37 12 24.5 -7.5 54828 120 36 14 25 -7 54129 121 34 13 23.5 -8.5 532.530 122 37 8 22.5 -9.5 523
31 123 34 8 21 -11 51232 124 40 18 29 -3 50933 125 43 16 29.5 -2.5 506.534 126 42 23 32.5 0.5 507
35 127 49 26 37.5 5.5 512.536 128 49 23 36 4 516.537 129 44 21 32.5 0.5 51738 130 51 28 39.5 7.5 524.5
39 131 44 32 38 6 530.540 132 40 25 32.5 0.5 53141 133 48 20 34 2 53342 134 46 21 33.5 1.5 534.5
43 135 43 24 33.5 1.5 536
44 136 48 20 34 2 53845 137 54 28 41 9 54746 138 53 32 42.5 10.5 557.547 139 51 31 41 9 566.5
48 140 49 31 40 8 574.549 141 42 25 33.5 1.5 57650 142 45 21 33 1 57751 143 56 28 42 10 587
52 144 60 30 45 13 60053 145 55 33 44 12 61254 146 56 36 46 14 62655 147 53 30 41.5 9.5 635.556 148 50 23 36.5 4.5 64057 149 51 30 40.5 8.5 648.558 150 53 27 40 8 656.559 151 41 32 36.5 4.5 66160 152 42 32 37 5 66661 153 48 31 39.5 7.5 673.562 154 53 29 41 9 682.563 155 54 35 44.5 12.5 69564 156 54 44 49 17 712
65 157 45 27 36 4 71666 158 39 23 31 -1 71567 159 49 20 34.5 2.5 717.568 160 53 26 39.5 7.5 725
69 161 54 38 46 14 73970 162 51 37 44 12 75171 163 50 23 36.5 4.5 755.572 164 54 26 40 8 763.5
73 165 39 29 34 2 765.574 166 42 28 35 3 768.575 167 50 29 39.5 7.5 77676 168 53 44 48.5 16.5 792.5
77 169 59 32 45.5 13.5 80678 170 57 30 43.5 11.5 817.579 171 49 30 39.5 7.5 82580 172 38 28 33 1 82681 173 50 25 37.5 5.5 831.582 174 53 27 40 8 839.583 175 61 33 47 15 854.584 176 58 35 46.5 14.5 86985 177 44 31 37.5 5.5 874.586 178 40 19 29.5 -2.5 87287 179 48 27 37.5 5.5 877.588 180 45 28 36.5 4.5 88289 181 57 26 41.5 9.5 891.5
90 182 61 27 44 12 903.591 183 64 37 50.5 18.5 92292 184 66 34 50 18 94093 185 66 37 51.5 19.5 959.5
94 186 70 36 53 21 980.595 187 73 44 58.5 26.5 100796 188 74 44 59 27 103497 189 71 43 57 25 1059
98 190 56 32 44 12 107199 191 60 28 44 12 1083100 192 67 35 51 19 1102101 193 45 21 33 1 1103
102 194 44 21 32.5 0.5 1103.5103 195 48 24 36 4 1107.5104 196 57 24 40.5 8.5 1116105 197 65 35 50 18 1134106 198 70 39 54.5 22.5 1156.5107 199 66 37 51.5 19.5 1176108 200 64 35 49.5 17.5 1193.5109 201 67 36 51.5 19.5 1213110 202 72 44 58 26 1239111 203 68 36 52 20 1259112 204 52 38 45 13 1272113 205 61 35 48 16 1288114 206 69 36 52.5 20.5 1308.5
115 207 67 42 54.5 22.5 1331116 208 53 28 40.5 8.5 1339.5117 209 50 28 39 7 1346.5118 210 53 26 39.5 7.5 1354
119 211 60 25 42.5 10.5 1364.5120 212 59 26 42.5 10.5 1375121 213 73 35 54 22 1397122 214 60 43 51.5 19.5 1416.5
123 215 59 32 45.5 13.5 1430124 216 63 31 47 15 1445125 217 67 32 49.5 17.5 1462.5126 218 69 39 54 22 1484.5
127 219 73 45 59 27 1511.5128 220 81 45 63 31 1542.5129 221 77 54 65.5 33.5 1576130 222 74 42 58 26 1602131 223 63 33 48 16 1618132 224 66 33 49.5 17.5 1635.5133 225 79 38 58.5 26.5 1662134 226 70 44 57 25 1687135 227 65 39 52 20 1707136 228 73 40 56.5 24.5 1731.5137 229 78 46 62 30 1761.5138 230 79 34 56.5 24.5 1786139 231 83 45 64 32 1818
140 232 82 47 64.5 32.5 1850.5141 233 78 52 65 33 1883.5142 234 75 43 59 27 1910.5143 235 70 42 56 24 1934.5
144 236 80 44 62 30 1964.5145 237 82 49 65.5 33.5 1998146 238 83 50 66.5 34.5 2032.5147 239 81 49 65 33 2065.5
148 240 78 46 62 30 2095.5149 241 80 43 61.5 29.5 2125150 242 79 46 62.5 30.5 2155.5151 243 60 47 53.5 21.5 2177
152 244 65 39 52 20 2197
153 245 67 43 55 23 2220154 246 75 43 59 27 2247155 247 84 50 67 35 2282156 248 84 52 68 36 2318
157 249 79 50 64.5 32.5 2350.5158 250 83 49 66 34 2384.5159 251 87 51 69 37 2421.5160 252 89 55 72 40 2461.5
161 253 86 53 69.5 37.5 2499162 254 85 53 69 37 2536163 255 86 51 68.5 36.5 2572.5164 256 82 49 65.5 33.5 2606165 257 82 52 67 35 2641166 258 85 51 68 36 2677167 259 87 56 71.5 39.5 2716.5168 260 91 54 72.5 40.5 2757169 261 93 57 75 43 2800170 262 90 63 76.5 44.5 2844.5171 263 85 55 70 38 2882.5172 264 87 52 69.5 37.5 2920173 265 85 62 73.5 41.5 2961.5
174 266 86 52 69 37 2998.5175 267 86 54 70 38 3036.5176 268 85 56 70.5 38.5 3075177 269 83 53 68 36 3111
178 270 81 52 66.5 34.5 3145.5179 271 88 54 71 39 3184.5180 272 89 58 73.5 41.5 3226181 273 86 52 69 37 3263
182 274 92 54 73 41 3304183 275 96 58 77 45 3349184 276 95 62 78.5 46.5 3395.5185 277 94 63 78.5 46.5 3442
186 278 98 61 79.5 47.5 3489.5187 279 99 63 81 49 3538.5188 280 97 67 82 50 3588.5189 281 92 61 76.5 44.5 3633190 282 84 58 71 39 3672191 283 88 61 74.5 42.5 3714.5192 284 88 55 71.5 39.5 3754193 285 91 58 74.5 42.5 3796.5194 286 92 58 75 43 3839.5195 287 93 62 77.5 45.5 3885196 288 91 63 77 45 3930197 289 95 61 78 46 3976198 290 93 59 76 44 4020
199 291 88 62 75 43 4063200 292 91 67 79 47 4110201 293 75 56 65.5 33.5 4143.5202 294 83 53 68 36 4179.5
203 295 90 58 74 42 4221.5204 296 90 59 74.5 42.5 4264205 297 87 58 72.5 40.5 4304.5206 298 85 55 70 38 4342.5
207 299 85 57 71 39 4381.5208 300 91 56 73.5 41.5 4423209 301 96 64 80 48 4471210 302 93 63 78 46 4517
211 303 95 59 77 45 4562212 304 95 63 79 47 4609213 305 90 61 75.5 43.5 4652.5214 306 87 62 74.5 42.5 4695215 307 84 59 71.5 39.5 4734.5216 308 88 55 71.5 39.5 4774217 309 90 60 75 43 4817218 310 73 55 64 32 4849219 311 85 54 69.5 37.5 4886.5220 312 91 57 74 42 4928.5221 313 90 57 73.5 41.5 4970222 314 89 59 74 42 5012223 315 88 60 74 42 5054
224 316 82 59 70.5 38.5 5092.5225 317 89 58 73.5 41.5 5134226 318 91 60 75.5 43.5 5177.5227 319 91 61 76 44 5221.5
228 320 93 60 76.5 44.5 5266229 321 95 61 78 46 5312230 322 87 62 74.5 42.5 5354.5231 323 89 53 71 39 5393.5
232 324 91 62 76.5 44.5 5438233 325 95 67 81 49 5487234 326 95 60 77.5 45.5 5532.5235 327 93 60 76.5 44.5 5577
236 328 91 58 74.5 42.5 5619.5237 329 92 58 75 43 5662.5238 330 91 60 75.5 43.5 5706239 331 88 61 74.5 42.5 5748.5240 332 86 58 72 40 5788.5241 333 93 59 76 44 5832.5242 334 93 59 76 44 5876.5243 335 91 63 77 45 5921.5244 336 89 60 74.5 42.5 5964245 337 89 55 72 40 6004246 338 91 60 75.5 43.5 6047.5247 339 87 60 73.5 41.5 6089248 340 79 55 67 35 6124
249 341 76 56 66 34 6158250 342 72 54 63 31 6189251 343 78 51 64.5 32.5 6221.5252 344 84 54 69 37 6258.5
253 345 81 58 69.5 37.5 6296254 346 79 52 65.5 33.5 6329.5255 347 78 50 64 32 6361.5256 348 77 50 63.5 31.5 6393
257 349 80 48 64 32 6425258 350 75 47 61 29 6454259 351 76 45 60.5 28.5 6482.5260 352 80 42 61 29 6511.5
400
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1400
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Blanding, UT
1990-1991
261 353 84 51 67.5 35.5 6547
262 354 77 50 63.5 31.5 6578.5263 355 79 47 63 31 6609.5264 356 84 40 62 30 6639.5265 357 85 51 68 36 6675.5
266 358 83 49 66 34 6709.5267 359 83 53 68 36 6745.5268 360 85 51 68 36 6781.5269 361 85 52 68.5 36.5 6818
270 362 84 55 69.5 37.5 6855.5 77 954.5 length of freeze (day) 35271 363 81 51 66 34 6889.5 112 506.5 frost depth (oF-day)448272 364 78 52 65 33 6922.5 average temperature 51.1273 365 80 50 65 33 6955.5
1991-1992 day of frost year degree cumulative
day of year (consecutive date) max. temp. min. temp avg. temp day (
oF) degree day (
oF)274 1 81 49 65 33 33275 2 83 49 66 34 67
276 3 84 48 66 34 101277 4 75 47 61 29 130278 5 75 40 57.5 25.5 155.5279 6 78 46 62 30 185.5
280 7 80 45 62.5 30.5 216281 8 80 49 64.5 32.5 248.5282 9 82 53 67.5 35.5 284283 10 83 47 65 33 317
284 11 82 50 66 34 351285 12 77 50 63.5 31.5 382.5286 13 82 48 65 33 415.5287 14 81 47 64 32 447.5288 15 84 51 67.5 35.5 483289 16 84 48 66 34 517290 17 81 48 64.5 32.5 549.5291 18 81 49 65 33 582.5292 19 76 44 60 28 610.5293 20 71 48 59.5 27.5 638294 21 73 44 58.5 26.5 664.5295 22 69 42 55.5 23.5 688296 23 66 41 53.5 21.5 709.5
297 24 58 38 48 16 725.5298 25 59 37 48 16 741.5299 26 51 36 43.5 11.5 753300 27 49 35 42 10 763
301 28 36 25 30.5 -1.5 761.5302 29 34 23 28.5 -3.5 758303 30 42 25 33.5 1.5 759.5304 31 42 17 29.5 -2.5 757
305 32 43 23 33 1 758306 33 42 20 31 -1 757307 34 45 15 30 -2 755308 35 51 24 37.5 5.5 760.5
309 36 59 30 44.5 12.5 773310 37 64 34 49 17 790311 38 68 39 53.5 21.5 811.5312 39 62 37 49.5 17.5 829313 40 63 41 52 20 849314 41 51 41 46 14 863315 42 61 38 49.5 17.5 880.5316 43 58 33 45.5 13.5 894317 44 55 28 41.5 9.5 903.5318 45 55 35 45 13 916.5319 46 40 31 35.5 3.5 920320 47 45 31 38 6 926321 48 43 29 36 4 930
322 49 48 30 39 7 937323 50 46 27 36.5 4.5 941.5324 51 45 23 34 2 943.5325 52 44 28 36 4 947.5
326 53 39 26 32.5 0.5 948327 54 40 13 26.5 -5.5 942.5328 55 46 20 33 1 943.5329 56 50 26 38 6 949.5
330 57 45 27 36 4 953.5331 58 52 29 40.5 8.5 962332 59 51 32 41.5 9.5 971.5333 60 51 30 40.5 8.5 980
334 61 42 27 34.5 2.5 982.5335 62 34 15 24.5 -7.5 975336 63 32 13 22.5 -9.5 965.5337 64 40 16 28 -4 961.5338 65 41 16 28.5 -3.5 958339 66 40 17 28.5 -3.5 954.5340 67 42 19 30.5 -1.5 953341 68 45 21 33 1 954342 69 49 26 37.5 5.5 959.5343 70 49 25 37 5 964.5344 71 40 30 35 3 967.5345 72 40 25 32.5 0.5 968346 73 49 21 35 3 971
347 74 40 27 33.5 1.5 972.5348 75 39 26 32.5 0.5 973349 76 30 21 25.5 -6.5 966.5350 77 25 18 21.5 -10.5 956
351 78 33 20 26.5 -5.5 950.5352 79 39 25 32 0 950.5353 80 35 26 30.5 -1.5 949354 81 47 25 36 4 953
355 82 47 27 37 5 958356 83 38 25 31.5 -0.5 957.5357 84 37 20 28.5 -3.5 954358 85 44 20 32 0 954
359 86 32 18 25 -7 947360 87 27 22 24.5 -7.5 939.5361 88 30 19 24.5 -7.5 932362 89 29 23 26 -6 926363 90 37 23 30 -2 924364 91 37 24 30.5 -1.5 922.5
0
200
0 50 100 150 200 250
fr
e
day of frost year
365 92 38 19 28.5 -3.5 919
1 93 35 12 23.5 -8.5 910.52 94 28 13 20.5 -11.5 8993 95 27 11 19 -13 8864 96 38 20 29 -3 883
5 97 38 26 32 0 8836 98 37 25 31 -1 8827 99 35 20 27.5 -4.5 877.58 100 38 14 26 -6 871.5
9 101 40 10 25 -7 864.510 102 34 9 21.5 -10.5 85411 103 23 9 16 -16 83812 104 39 11 25 -7 83113 105 38 9 23.5 -8.5 822.514 106 37 11 24 -8 814.515 107 39 15 27 -5 809.516 108 34 10 22 -10 799.517 109 39 8 23.5 -8.5 79118 110 41 17 29 -3 78819 111 39 17 28 -4 78420 112 42 15 28.5 -3.5 780.521 113 39 15 27 -5 775.5
22 114 40 17 28.5 -3.5 77223 115 39 16 27.5 -4.5 767.524 116 44 21 32.5 0.5 76825 117 47 22 34.5 2.5 770.5
26 118 45 26 35.5 3.5 77427 119 45 24 34.5 2.5 776.528 120 46 23 34.5 2.5 77929 121 43 21 32 0 779
30 122 43 23 33 1 78031 123 - - - - 78032 124 47 25 36 4 78433 125 50 28 39 7 791
34 126 45 32 38.5 6.5 797.535 127 46 29 37.5 5.5 80336 128 46 24 35 3 80637 129 44 26 35 3 80938 130 45 29 37 5 81439 131 43 32 37.5 5.5 819.540 132 43 32 37.5 5.5 82541 133 40 32 36 4 82942 134 38 30 34 2 83143 135 42 31 36.5 4.5 835.544 136 38 32 35 3 838.545 137 43 27 35 3 841.546 138 43 28 35.5 3.5 845
47 139 38 19 28.5 -3.5 841.548 140 44 17 30.5 -1.5 84049 141 42 20 31 -1 83950 142 44 22 33 1 840
51 143 40 27 33.5 1.5 841.552 144 55 31 43 11 852.553 145 52 32 42 10 862.554 146 48 31 39.5 7.5 870
55 147 53 23 38 6 87656 148 52 29 40.5 8.5 884.557 149 55 27 41 9 893.558 150 58 30 44 12 905.5
59 151 61 32 46.5 14.5 92060 152 60 33 46.5 14.5 934.561 153 60 30 45 13 947.562 154 60 38 49 17 964.563 155 52 34 43 11 975.564 156 51 31 41 9 984.565 157 57 36 46.5 14.5 99966 158 55 31 43 11 101067 159 62 34 48 16 102668 160 42 31 36.5 4.5 1030.569 161 47 30 38.5 6.5 103770 162 53 25 39 7 104471 163 58 31 44.5 12.5 1056.5
72 164 63 33 48 16 1072.573 165 64 34 49 17 1089.574 166 65 37 51 19 1108.575 167 63 37 50 18 1126.5
76 168 61 34 47.5 15.5 114277 169 58 34 46 14 115678 170 51 28 39.5 7.5 1163.579 171 56 28 42 10 1173.5
80 172 59 29 44 12 1185.581 173 54 34 44 12 1197.582 174 53 31 42 10 1207.583 175 52 33 42.5 10.5 1218
84 176 56 29 42.5 10.5 1228.585 177 60 31 45.5 13.5 124286 178 65 38 51.5 19.5 1261.587 179 51 34 42.5 10.5 127288 180 47 34 40.5 8.5 1280.589 181 55 33 44 12 1292.590 182 56 38 47 15 1307.591 183 45 38 41.5 9.5 131792 184 55 35 45 13 133093 185 64 33 48.5 16.5 1346.594 186 67 37 52 20 1366.595 187 70 39 54.5 22.5 138996 188 70 40 55 23 1412
97 189 69 42 55.5 23.5 1435.598 190 70 40 55 23 1458.599 191 71 42 56.5 24.5 1483100 192 73 43 58 26 1509
101 193 75 43 59 27 1536102 194 74 47 60.5 28.5 1564.5103 195 76 48 62 30 1594.5104 196 75 48 61.5 29.5 1624
105 197 72 46 59 27 1651106 198 70 43 56.5 24.5 1675.5107 199 66 39 52.5 20.5 1696108 200 73 43 58 26 1722
109 201 57 39 48 16 1738
110 202 60 33 46.5 14.5 1752.5111 203 63 35 49 17 1769.5112 204 69 35 52 20 1789.5113 205 68 42 55 23 1812.5
114 206 73 40 56.5 24.5 1837115 207 75 41 58 26 1863116 208 77 44 60.5 28.5 1891.5117 209 79 45 62 30 1921.5
118 210 83 52 67.5 35.5 1957119 211 86 51 68.5 36.5 1993.5120 212 85 51 68 36 2029.5121 213 83 48 65.5 33.5 2063122 214 82 48 65 33 2096123 215 80 44 62 30 2126124 216 81 49 65 33 2159125 217 75 44 59.5 27.5 2186.5126 218 80 47 63.5 31.5 2218127 219 75 48 61.5 29.5 2247.5128 220 68 45 56.5 24.5 2272129 221 75 46 60.5 28.5 2300.5130 222 66 42 54 22 2322.5
131 223 65 35 50 18 2340.5132 224 77 42 59.5 27.5 2368133 225 77 48 62.5 30.5 2398.5134 226 79 48 63.5 31.5 2430
135 227 80 50 65 33 2463136 228 81 49 65 33 2496137 229 80 46 63 31 2527138 230 84 50 67 35 2562
139 231 84 53 68.5 36.5 2598.5140 232 79 53 66 34 2632.5141 233 65 50 57.5 25.5 2658142 234 70 46 58 26 2684
143 235 75 40 57.5 25.5 2709.5144 236 73 40 56.5 24.5 2734145 237 65 47 56 24 2758146 238 74 45 59.5 27.5 2785.5147 239 71 50 60.5 28.5 2814148 240 74 47 60.5 28.5 2842.5149 241 74 42 58 26 2868.5150 242 70 49 59.5 27.5 2896151 243 75 41 58 26 2922152 244 79 46 62.5 30.5 2952.5153 245 73 49 61 29 2981.5154 246 82 46 64 32 3013.5155 247 79 55 67 35 3048.5
156 248 88 52 70 38 3086.5157 249 85 54 69.5 37.5 3124158 250 85 51 68 36 3160159 251 83 51 67 35 3195
160 252 73 51 62 30 3225161 253 79 47 63 31 3256162 254 84 51 67.5 35.5 3291.5163 255 86 55 70.5 38.5 3330
164 256 84 53 68.5 36.5 3366.5165 257 82 48 65 33 3399.5166 258 77 45 61 29 3428.5167 259 74 37 55.5 23.5 3452
168 260 74 45 59.5 27.5 3479.5169 261 80 45 62.5 30.5 3510170 262 87 52 69.5 37.5 3547.5171 263 88 52 70 38 3585.5172 264 90 54 72 40 3625.5173 265 90 56 73 41 3666.5174 266 95 57 76 44 3710.5175 267 93 56 74.5 42.5 3753176 268 89 55 72 40 3793177 269 88 57 72.5 40.5 3833.5178 270 84 53 68.5 36.5 3870179 271 86 51 68.5 36.5 3906.5180 272 93 57 75 43 3949.5
181 273 90 56 73 41 3990.5182 274 88 52 70 38 4028.5183 275 82 51 66.5 34.5 4063184 276 80 46 63 31 4094
185 277 89 51 70 38 4132186 278 92 60 76 44 4176187 279 96 62 79 47 4223188 280 96 64 80 48 4271
189 281 86 64 75 43 4314190 282 75 57 66 34 4348191 283 85 55 70 38 4386192 284 87 59 73 41 4427
193 285 83 55 69 37 4464194 286 67 54 60.5 28.5 4492.5195 287 78 54 66 34 4526.5196 288 81 53 67 35 4561.5197 289 87 58 72.5 40.5 4602198 290 88 57 72.5 40.5 4642.5199 291 87 60 73.5 41.5 4684200 292 89 69 79 47 4731201 293 90 70 80 48 4779202 294 91 63 77 45 4824203 295 91 61 76 44 4868204 296 90 60 75 43 4911205 297 86 60 73 41 4952
206 298 77 58 67.5 35.5 4987.5207 299 84 58 71 39 5026.5208 300 87 54 70.5 38.5 5065209 301 91 60 75.5 43.5 5108.5
210 302 90 59 74.5 42.5 5151211 303 93 61 77 45 5196212 304 94 60 77 45 5241213 305 94 58 76 44 5285
214 306 92 60 76 44 5329215 307 95 61 78 46 5375216 308 94 61 77.5 45.5 5420.5217 309 94 64 79 47 5467.5
218 310 90 62 76 44 5511.5
219 311 83 61 72 40 5551.5220 312 88 55 71.5 39.5 5591221 313 90 59 74.5 42.5 5633.5222 314 94 61 77.5 45.5 5679
223 315 94 63 78.5 46.5 5725.5224 316 88 67 77.5 45.5 5771225 317 87 57 72 40 5811226 318 93 62 77.5 45.5 5856.5
227 319 96 61 78.5 46.5 5903228 320 93 61 77 45 5948229 321 94 66 80 48 5996230 322 90 63 76.5 44.5 6040.5231 323 93 60 76.5 44.5 6085232 324 95 64 79.5 47.5 6132.5233 325 93 58 75.5 43.5 6176234 326 93 62 77.5 45.5 6221.5235 327 73 61 67 35 6256.5236 328 67 55 61 29 6285.5237 329 76 53 64.5 32.5 6318238 330 78 52 65 33 6351239 331 80 47 63.5 31.5 6382.5
240 332 82 47 64.5 32.5 6415241 333 86 52 69 37 6452242 334 85 54 69.5 37.5 6489.5243 335 85 54 69.5 37.5 6527
244 336 65 50 57.5 25.5 6552.5245 337 79 47 63 31 6583.5246 338 82 50 66 34 6617.5247 339 82 54 68 36 6653.5
248 340 81 53 67 35 6688.5249 341 73 45 59 27 6715.5250 342 82 55 68.5 36.5 6752251 343 84 57 70.5 38.5 6790.5
252 344 86 54 70 38 6828.5253 345 89 54 71.5 39.5 6868254 346 89 53 71 39 6907255 347 87 56 71.5 39.5 6946.5256 348 89 55 72 40 6986.5257 349 85 58 71.5 39.5 7026258 350 85 54 69.5 37.5 7063.5259 351 78 55 66.5 34.5 7098260 352 82 54 68 36 7134261 353 85 54 69.5 37.5 7171.5262 354 78 53 65.5 33.5 7205263 355 72 50 61 29 7234264 356 78 49 63.5 31.5 7265.5
265 357 81 51 66 34 7299.5266 358 79 49 64 32 7331.5267 359 82 52 67 35 7366.5268 360 81 55 68 36 7402.5
269 361 72 53 62.5 30.5 7433270 362 75 38 56.5 24.5 7457.5271 363 78 45 61.5 29.5 7487 61 982.5 length of freeze (day) 54
272 364 80 48 64 32 7519 115 767.5 frost depth (oF-day)215273 365 80 50 65 33 7552 average temperature 52.8
274 366 81 51 66 34 7586
1992-1993 day of frost year degree cumulativeday of year (consecutive date) max. temp. min. temp avg. temp day (
oF) degree day (oF)
274 1 84 52 68 36 36275 2 80 52 66 34 70276 3 73 47 60 28 98277 4 75 42 58.5 26.5 124.5
278 5 76 44 60 28 152.5279 6 75 47 61 29 181.5280 7 60 35 47.5 15.5 197281 8 66 32 49 17 214
282 9 75 39 57 25 239283 10 76 40 58 26 265284 11 78 41 59.5 27.5 292.5285 12 77 46 61.5 29.5 322
286 13 77 45 61 29 351287 14 77 47 62 30 381288 15 71 43 57 25 406289 16 72 42 57 25 431
290 17 72 43 57.5 25.5 456.5291 18 74 44 59 27 483.5292 19 75 47 61 29 512.5293 20 75 45 60 28 540.5294 21 70 45 57.5 25.5 566295 22 73 48 60.5 28.5 594.5296 23 75 45 60 28 622.5297 24 73 51 62 30 652.5298 25 63 44 53.5 21.5 674299 26 63 38 50.5 18.5 692.5300 27 62 40 51 19 711.5301 28 52 44 48 16 727.5302 29 52 41 46.5 14.5 742
303 30 51 39 45 13 755304 31 50 38 44 12 767305 32 54 29 41.5 9.5 776.5306 33 57 31 44 12 788.5
307 34 43 29 36 4 792.5308 35 46 22 34 2 794.5309 36 50 24 37 5 799.5310 37 50 24 37 5 804.5
311 38 53 28 40.5 8.5 813312 39 54 30 42 10 823313 40 56 34 45 13 836314 41 48 33 40.5 8.5 844.5
315 42 45 26 35.5 3.5 848316 43 50 23 36.5 4.5 852.5317 44 51 26 38.5 6.5 859318 45 56 29 42.5 10.5 869.5319 46 58 31 44.5 12.5 882320 47 58 31 44.5 12.5 894.5
0
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400
600
800
1000
1200
1400
0 50 100 150 200
fr
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day of frost year
Blanding, UT
1991-1992
321 48 51 34 42.5 10.5 905
322 49 52 33 42.5 10.5 915.5323 50 52 31 41.5 9.5 925324 51 35 30 32.5 0.5 925.5325 52 48 25 36.5 4.5 930
326 53 42 24 33 1 931327 54 39 21 30 -2 929328 55 36 17 26.5 -5.5 923.5329 56 36 12 24 -8 915.5
330 57 43 15 29 -3 912.5331 58 40 15 27.5 -4.5 908332 59 42 19 30.5 -1.5 906.5333 60 43 18 30.5 -1.5 905334 61 42 18 30 -2 903335 62 48 19 33.5 1.5 904.5336 63 47 23 35 3 907.5337 64 50 29 39.5 7.5 915338 65 42 29 35.5 3.5 918.5339 66 23 20 21.5 -10.5 908340 67 39 19 29 -3 905341 68 42 21 31.5 -0.5 904.5342 69 40 12 26 -6 898.5
343 70 37 24 30.5 -1.5 897344 71 46 19 32.5 0.5 897.5345 72 47 24 35.5 3.5 901346 73 39 25 32 0 901
347 74 35 20 27.5 -4.5 896.5348 75 35 6 20.5 -11.5 885349 76 29 9 19 -13 872350 77 28 11 19.5 -12.5 859.5
351 78 33 6 19.5 -12.5 847352 79 28 15 21.5 -10.5 836.5353 80 35 9 22 -10 826.5354 81 37 2 19.5 -12.5 814
355 82 35 5 20 -12 802356 83 34 9 21.5 -10.5 791.5357 84 35 9 22 -10 781.5358 85 38 9 23.5 -8.5 773359 86 37 8 22.5 -9.5 763.5360 87 36 9 22.5 -9.5 754361 88 40 11 25.5 -6.5 747.5362 89 38 35 36.5 4.5 752363 90 43 34 38.5 6.5 758.5364 91 41 30 35.5 3.5 762365 92 48 23 35.5 3.5 765.51 93 47 29 38 6 771.52 94 46 33 39.5 7.5 779
3 95 27 16 21.5 -10.5 768.54 96 33 6 19.5 -12.5 7565 97 43 16 29.5 -2.5 753.56 98 38 25 31.5 -0.5 753
7 99 38 30 34 2 7558 100 38 31 34.5 2.5 757.59 101 36 24 30 -2 755.510 102 32 29 30.5 -1.5 754
11 103 35 29 32 0 75412 104 37 7 22 -10 74413 105 33 14 23.5 -8.5 735.514 106 38 28 33 1 736.5
15 107 39 31 35 3 739.516 108 37 31 34 2 741.517 109 37 31 34 2 743.518 110 43 32 37.5 5.5 74919 111 39 30 34.5 2.5 751.520 112 46 19 32.5 0.5 75221 113 45 23 34 2 75422 114 51 25 38 6 76023 115 38 18 28 -4 75624 116 40 18 29 -3 75325 117 47 18 32.5 0.5 753.526 118 45 20 32.5 0.5 75427 119 48 25 36.5 4.5 758.5
28 120 43 23 33 1 759.529 121 49 24 36.5 4.5 76430 122 41 32 36.5 4.5 768.531 123 47 32 39.5 7.5 776
32 124 36 28 32 0 77633 125 42 23 32.5 0.5 776.534 126 45 20 32.5 0.5 77735 127 46 18 32 0 777
36 128 47 19 33 1 77837 129 52 23 37.5 5.5 783.538 130 49 29 39 7 790.539 131 38 31 34.5 2.5 793
40 132 43 33 38 6 79941 133 47 27 37 5 80442 134 44 26 35 3 80743 135 46 24 35 3 81044 136 43 24 33.5 1.5 811.545 137 42 23 32.5 0.5 81246 138 39 23 31 -1 81147 139 43 22 32.5 0.5 811.548 140 45 28 36.5 4.5 81649 141 46 26 36 4 82050 142 48 34 41 9 82951 143 40 31 35.5 3.5 832.552 144 41 24 32.5 0.5 833
53 145 42 19 30.5 -1.5 831.554 146 47 25 36 4 835.555 147 39 29 34 2 837.556 148 40 24 32 0 837.5
57 149 45 27 36 4 841.558 150 57 31 44 12 853.559 151 50 35 42.5 10.5 86460 152 50 29 39.5 7.5 871.5
61 153 50 26 38 6 877.562 154 50 24 37 5 882.563 155 51 23 37 5 887.564 156 55 25 40 8 895.5
65 157 58 30 44 12 907.5
66 158 62 31 46.5 14.5 92267 159 63 32 47.5 15.5 937.568 160 63 33 48 16 953.569 161 64 37 50.5 18.5 972
70 162 55 36 45.5 13.5 985.571 163 45 24 34.5 2.5 98872 164 51 23 37 5 99373 165 52 29 40.5 8.5 1001.5
74 166 59 33 46 14 1015.575 167 63 33 48 16 1031.576 168 56 38 47 15 1046.577 169 60 38 49 17 1063.578 170 63 35 49 17 1080.579 171 62 35 48.5 16.5 109780 172 63 38 50.5 18.5 1115.581 173 67 32 49.5 17.5 113382 174 69 36 52.5 20.5 1153.583 175 68 38 53 21 1174.584 176 66 37 51.5 19.5 119485 177 65 43 54 22 121686 178 43 31 37 5 1221
87 179 47 33 40 8 122988 180 56 31 43.5 11.5 1240.589 181 54 31 42.5 10.5 125190 182 58 29 43.5 11.5 1262.5
91 183 62 33 47.5 15.5 127892 184 57 38 47.5 15.5 1293.593 185 62 30 46 14 1307.594 186 66 36 51 19 1326.5
95 187 60 38 49 17 1343.596 188 50 31 40.5 8.5 135297 189 50 28 39 7 135998 190 60 28 44 12 1371
99 191 66 34 50 18 1389100 192 68 39 53.5 21.5 1410.5101 193 69 39 54 22 1432.5102 194 62 40 51 19 1451.5103 195 52 25 38.5 6.5 1458104 196 55 30 42.5 10.5 1468.5105 197 64 51 57.5 25.5 1494106 198 63 38 50.5 18.5 1512.5107 199 70 36 53 21 1533.5108 200 69 43 56 24 1557.5109 201 55 28 41.5 9.5 1567110 202 65 30 47.5 15.5 1582.5111 203 73 38 55.5 23.5 1606
112 204 76 43 59.5 27.5 1633.5113 205 71 43 57 25 1658.5114 206 62 41 51.5 19.5 1678115 207 67 33 50 18 1696
116 208 75 35 55 23 1719117 209 75 43 59 27 1746118 210 73 44 58.5 26.5 1772.5119 211 75 39 57 25 1797.5
120 212 69 41 55 23 1820.5121 213 64 39 51.5 19.5 1840122 214 68 38 53 21 1861123 215 76 46 61 29 1890
124 216 72 46 59 27 1917125 217 50 31 40.5 8.5 1925.5126 218 62 34 48 16 1941.5127 219 62 42 52 20 1961.5128 220 54 33 43.5 11.5 1973129 221 63 36 49.5 17.5 1990.5130 222 75 40 57.5 25.5 2016131 223 80 46 63 31 2047132 224 80 47 63.5 31.5 2078.5133 225 79 50 64.5 32.5 2111134 226 77 46 61.5 29.5 2140.5135 227 80 49 64.5 32.5 2173136 228 75 52 63.5 31.5 2204.5
137 229 64 49 56.5 24.5 2229138 230 75 46 60.5 28.5 2257.5139 231 80 51 65.5 33.5 2291140 232 79 49 64 32 2323
141 233 79 53 66 34 2357142 234 76 51 63.5 31.5 2388.5143 235 79 48 63.5 31.5 2420144 236 80 52 66 34 2454
145 237 83 52 67.5 35.5 2489.5146 238 83 54 68.5 36.5 2526147 239 78 54 66 34 2560148 240 76 52 64 32 2592
149 241 78 50 64 32 2624150 242 82 51 66.5 34.5 2658.5151 243 83 53 68 36 2694.5152 244 80 52 66 34 2728.5153 245 78 49 63.5 31.5 2760154 246 70 45 57.5 25.5 2785.5155 247 70 40 55 23 2808.5156 248 76 51 63.5 31.5 2840157 249 65 48 56.5 24.5 2864.5158 250 67 35 51 19 2883.5159 251 66 42 54 22 2905.5160 252 72 44 58 26 2931.5161 253 79 47 63 31 2962.5
162 254 84 51 67.5 35.5 2998163 255 87 53 70 38 3036164 256 88 54 71 39 3075165 257 92 60 76 44 3119
166 258 92 59 75.5 43.5 3162.5167 259 89 59 74 42 3204.5168 260 80 53 66.5 34.5 3239169 261 76 44 60 28 3267
170 262 82 42 62 30 3297171 263 89 54 71.5 39.5 3336.5172 264 88 58 73 41 3377.5173 265 86 53 69.5 37.5 3415
174 266 87 54 70.5 38.5 3453.5
175 267 80 45 62.5 30.5 3484176 268 89 51 70 38 3522177 269 93 55 74 42 3564178 270 93 59 76 44 3608
179 271 96 62 79 47 3655180 272 94 60 77 45 3700181 273 91 57 74 42 3742182 274 93 58 75.5 43.5 3785.5
183 275 94 62 78 46 3831.5184 276 87 61 74 42 3873.5185 277 86 50 68 36 3909.5186 278 83 51 67 35 3944.5187 279 90 54 72 40 3984.5188 280 93 53 73 41 4025.5189 281 93 61 77 45 4070.5190 282 95 59 77 45 4115.5191 283 93 61 77 45 4160.5192 284 93 59 76 44 4204.5193 285 90 62 76 44 4248.5194 286 89 57 73 41 4289.5195 287 89 57 73 41 4330.5
196 288 90 56 73 41 4371.5197 289 89 56 72.5 40.5 4412198 290 87 53 70 38 4450199 291 90 54 72 40 4490
200 292 89 57 73 41 4531201 293 88 58 73 41 4572202 294 86 56 71 39 4611203 295 84 57 70.5 38.5 4649.5
204 296 89 54 71.5 39.5 4689205 297 85 55 70 38 4727206 298 90 56 73 41 4768207 299 90 54 72 40 4808
208 300 91 58 74.5 42.5 4850.5209 301 96 62 79 47 4897.5210 302 93 65 79 47 4944.5211 303 92 62 77 45 4989.5212 304 95 62 78.5 46.5 5036213 305 98 58 78 46 5082214 306 95 60 77.5 45.5 5127.5215 307 89 63 76 44 5171.5216 308 89 62 75.5 43.5 5215217 309 86 54 70 38 5253218 310 88 60 74 42 5295219 311 89 59 74 42 5337220 312 86 59 72.5 40.5 5377.5
221 313 88 57 72.5 40.5 5418222 314 86 57 71.5 39.5 5457.5223 315 89 53 71 39 5496.5224 316 90 59 74.5 42.5 5539
225 317 90 58 74 42 5581226 318 80 56 68 36 5617227 319 84 55 69.5 37.5 5654.5228 320 90 53 71.5 39.5 5694
229 321 90 57 73.5 41.5 5735.5230 322 90 54 72 40 5775.5231 323 86 58 72 40 5815.5232 324 80 57 68.5 36.5 5852
233 325 81 56 68.5 36.5 5888.5234 326 86 53 69.5 37.5 5926235 327 88 53 70.5 38.5 5964.5236 328 90 57 73.5 41.5 6006237 329 73 58 65.5 33.5 6039.5238 330 75 54 64.5 32.5 6072239 331 69 57 63 31 6103240 332 78 54 66 34 6137241 333 82 55 68.5 36.5 6173.5242 334 80 43 61.5 29.5 6203243 335 76 53 64.5 32.5 6235.5244 336 85 53 69 37 6272.5245 337 85 54 69.5 37.5 6310
246 338 87 55 71 39 6349247 339 89 57 73 41 6390248 340 88 54 71 39 6429249 341 86 54 70 38 6467
250 342 85 56 70.5 38.5 6505.5251 343 83 54 68.5 36.5 6542252 344 86 53 69.5 37.5 6579.5253 345 87 56 71.5 39.5 6619
254 346 86 53 69.5 37.5 6656.5255 347 85 55 70 38 6694.5256 348 69 48 58.5 26.5 6721257 349 67 37 52 20 6741
258 350 73 43 58 26 6767259 351 77 49 63 31 6798260 352 74 46 60 28 6826261 353 62 42 52 20 6846262 354 73 39 56 24 6870263 355 76 45 60.5 28.5 6898.5264 356 79 48 63.5 31.5 6930265 357 83 51 67 35 6965266 358 81 50 65.5 33.5 6998.5267 359 75 45 60 28 7026.5268 360 78 44 61 29 7055.5269 361 79 48 63.5 31.5 7087 54 929 length of freeze (day) 52
270 362 78 47 62.5 30.5 7117.5 106 736.5 frost depth (oF-day)192.5271 363 81 47 64 32 7149.5 average temperature 51.8272 364 80 47 63.5 31.5 7181273 365 82 47 64.5 32.5 7213.5
1993-1994 day of frost year degree cumulative
day of year (consecutive date) max. temp. min. temp avg. temp day (
oF) degree day (
oF)274 1 82 51 66.5 34.5 34.5275 2 82 47 64.5 32.5 67276 3 81 47 64 32 99277 4 81 50 65.5 33.5 132.5
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1400
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day of frost year
Blanding, UT
1992-1993
278 5 81 52 66.5 34.5 167
279 6 62 50 56 24 191280 7 60 44 52 20 211281 8 64 41 52.5 20.5 231.5282 9 64 36 50 18 249.5
283 10 69 41 55 23 272.5284 11 64 43 53.5 21.5 294285 12 66 43 54.5 22.5 316.5286 13 65 41 53 21 337.5
287 14 68 44 56 24 361.5288 15 65 42 53.5 21.5 383289 16 59 38 48.5 16.5 399.5290 17 55 41 48 16 415.5291 18 56 35 45.5 13.5 429292 19 62 34 48 16 445293 20 63 35 49 17 462294 21 64 34 49 17 479295 22 66 38 52 20 499296 23 67 37 52 20 519297 24 66 39 52.5 20.5 539.5298 25 68 40 54 22 561.5299 26 60 38 49 17 578.5
300 27 53 29 41 9 587.5301 28 55 29 42 10 597.5302 29 53 33 43 11 608.5303 30 46 19 32.5 0.5 609
304 31 54 25 39.5 7.5 616.5305 32 60 33 46.5 14.5 631306 33 55 28 41.5 9.5 640.5307 34 54 28 41 9 649.5
308 35 60 30 45 13 662.5309 36 45 26 35.5 3.5 666310 37 49 17 33 1 667311 38 52 27 39.5 7.5 674.5
312 39 54 26 40 8 682.5313 40 57 26 41.5 9.5 692314 41 55 32 43.5 11.5 703.5315 42 54 40 47 15 718.5316 43 44 30 37 5 723.5317 44 40 31 35.5 3.5 727318 45 43 26 34.5 2.5 729.5319 46 49 29 39 7 736.5320 47 49 26 37.5 5.5 742321 48 48 27 37.5 5.5 747.5322 49 48 30 39 7 754.5323 50 50 22 36 4 758.5324 51 47 23 35 3 761.5
325 52 49 25 37 5 766.5326 53 46 34 40 8 774.5327 54 59 37 48 16 790.5328 55 33 23 28 -4 786.5
329 56 28 10 19 -13 773.5330 57 35 10 22.5 -9.5 764331 58 46 14 30 -2 762332 59 46 21 33.5 1.5 763.5
333 60 49 23 36 4 767.5334 61 52 22 37 5 772.5335 62 53 26 39.5 7.5 780336 63 49 24 36.5 4.5 784.5
337 64 45 21 33 1 785.5338 65 45 22 33.5 1.5 787339 66 47 24 35.5 3.5 790.5340 67 47 25 36 4 794.5341 68 49 23 36 4 798.5342 69 50 26 38 6 804.5343 70 49 27 38 6 810.5344 71 55 27 41 9 819.5345 72 53 26 39.5 7.5 827346 73 40 28 34 2 829347 74 41 18 29.5 -2.5 826.5348 75 45 18 31.5 -0.5 826349 76 56 27 41.5 9.5 835.5
350 77 36 23 29.5 -2.5 833351 78 38 14 26 -6 827352 79 41 19 30 -2 825353 80 40 22 31 -1 824
354 81 40 12 26 -6 818355 82 40 13 26.5 -5.5 812.5356 83 36 10 23 -9 803.5357 84 34 20 27 -5 798.5
358 85 40 12 26 -6 792.5359 86 39 19 29 -3 789.5360 87 44 19 31.5 -0.5 789361 88 35 29 32 0 789
362 89 41 23 32 0 789363 90 43 18 30.5 -1.5 787.5364 91 41 19 30 -2 785.5365 92 45 20 32.5 0.5 7861 93 41 22 31.5 -0.5 785.52 94 48 26 37 5 790.53 95 51 24 37.5 5.5 7964 96 47 29 38 6 8025 9755334412 8146 98 37 23 30 -2 8127 99 36 14 25 -7 8058 100 42 17 29.5 -2.5 802.59 101 43 21 32 0 802.5
10 102 46 19 32.5 0.5 80311 103 41 19 30 -2 80112 104 48 20 34 2 80313 105 53 22 37.5 5.5 808.5
14 106 50 23 36.5 4.5 81315 107 45 23 34 2 81516 108 43 20 31.5 -0.5 814.517 109 47 20 33.5 1.5 816
18 110 54 25 39.5 7.5 823.519 111 53 25 39 7 830.520 112 55 27 41 9 839.521 113 57 27 42 10 849.5
22 114 55 25 40 8 857.5
23 115 52 24 38 6 863.524 116 54 33 43.5 11.5 87525 117 49 29 39 7 88226 118 39 24 31.5 -0.5 881.5
27 119 36 25 30.5 -1.5 88028 120 40 27 33.5 1.5 881.529 121 39 17 28 -4 877.530 122 35 19 27 -5 872.5
31 123 32 8 20 -12 860.532 124 35 8 21.5 -10.5 85033 125 39 9 24 -8 84234 126 40 18 29 -3 83935 127 35 32 33.5 1.5 840.536 128 38 18 28 -4 836.537 129 35 19 27 -5 831.538 130 42 21 31.5 -0.5 83139 131 45 31 38 6 83740 132 45 22 33.5 1.5 838.541 133 45 23 34 2 840.542 134 40 31 35.5 3.5 84443 135 40 20 30 -2 842
44 136 40 14 27 -5 83745 137 50 22 36 4 84146 138 50 23 36.5 4.5 845.547 139 52 28 40 8 853.5
48 140 55 35 45 13 866.549 141 43 31 37 5 871.550 142 38 23 30.5 -1.5 87051 143 40 20 30 -2 868
52 144 45 26 35.5 3.5 871.553 145 36 14 25 -7 864.554 146 35 13 24 -8 856.555 147 46 19 32.5 0.5 857
56 148 56 29 42.5 10.5 867.557 149 58 33 45.5 13.5 88158 150 51 34 42.5 10.5 891.559 151 54 29 41.5 9.5 90160 152 57 28 42.5 10.5 911.561 153 61 29 45 13 924.562 154 62 34 48 16 940.563 155 65 34 49.5 17.5 95864 156 64 35 49.5 17.5 975.565 157 64 39 51.5 19.5 99566 158 66 36 51 19 101467 159 58 36 47 15 102968 160 56 28 42 10 1039
69 161 58 28 43 11 105070 162 60 32 46 14 106471 163 62 31 46.5 14.5 1078.572 164 63 30 46.5 14.5 1093
73 165 68 33 50.5 18.5 1111.574 166 70 36 53 21 1132.575 167 72 39 55.5 23.5 115676 168 68 42 55 23 1179
77 169 60 39 49.5 17.5 1196.578 170 61 36 48.5 16.5 121379 171 57 39 48 16 122980 172 61 31 46 14 1243
81 173 62 36 49 17 126082 174 55 30 42.5 10.5 1270.583 175 53 32 42.5 10.5 128184 176 60 32 46 14 129585 177 58 33 45.5 13.5 1308.586 178 42 36 39 7 1315.587 179 59 20 39.5 7.5 132388 180 61 33 47 15 133889 181 57 23 40 8 134690 182 65 31 48 16 136291 183 68 36 52 20 138292 184 66 36 51 19 140193 185 71 37 54 22 1423
94 186 62 36 49 17 144095 187 52 32 42 10 145096 188 60 28 44 12 146297 189 60 40 50 18 1480
98 190 56 32 44 12 149299 191 44 33 38.5 6.5 1498.5100 192 45 31 38 6 1504.5101 193 50 32 41 9 1513.5
102 194 61 32 46.5 14.5 1528103 195 69 37 53 21 1549104 196 69 41 55 23 1572105 197 70 36 53 21 1593
106 198 75 43 59 27 1620107 199 80 49 64.5 32.5 1652.5108 200 80 48 64 32 1684.5109 201 79 53 66 34 1718.5110 202 79 51 65 33 1751.5111 203 79 48 63.5 31.5 1783112 204 80 53 66.5 34.5 1817.5113 205 75 46 60.5 28.5 1846114 206 63 47 55 23 1869115 207 55 30 42.5 10.5 1879.5116 208 48 30 39 7 1886.5117 209 41 28 34.5 2.5 1889118 210 53 29 41 9 1898
119 211 50 35 42.5 10.5 1908.5120 212 59 31 45 13 1921.5121 213 64 41 52.5 20.5 1942122 214 68 36 52 20 1962
123 215 69 43 56 24 1986124 216 75 42 58.5 26.5 2012.5125 217 80 49 64.5 32.5 2045126 218 77 48 62.5 30.5 2075.5
127 219 73 46 59.5 27.5 2103128 220 72 30 51 19 2122129 221 66 44 55 23 2145130 222 75 40 57.5 25.5 2170.5
131 223 73 42 57.5 25.5 2196
132 224 74 49 61.5 29.5 2225.5133 225 73 47 60 28 2253.5134 226 79 46 62.5 30.5 2284135 227 81 44 62.5 30.5 2314.5
136 228 80 47 63.5 31.5 2346137 229 78 45 61.5 29.5 2375.5138 230 79 48 63.5 31.5 2407139 231 75 46 60.5 28.5 2435.5
140 232 70 39 54.5 22.5 2458141 233 75 42 58.5 26.5 2484.5142 234 82 48 65 33 2517.5143 235 83 50 66.5 34.5 2552144 236 81 53 67 35 2587145 237 53 45 49 17 2604146 238 68 43 55.5 23.5 2627.5147 239 78 48 63 31 2658.5148 240 81 53 67 35 2693.5149 241 84 48 66 34 2727.5150 242 87 53 70 38 2765.5151 243 88 58 73 41 2806.5152 244 84 50 67 35 2841.5
153 245 88 54 71 39 2880.5154 246 90 60 75 43 2923.5155 247 87 52 69.5 37.5 2961156 248 88 54 71 39 3000
157 249 87 53 70 38 3038158 250 84 51 67.5 35.5 3073.5159 251 83 50 66.5 34.5 3108160 252 88 52 70 38 3146
161 253 92 56 74 42 3188162 254 94 59 76.5 44.5 3232.5163 255 93 57 75 43 3275.5164 256 92 58 75 43 3318.5
165 257 93 55 74 42 3360.5166 258 90 52 71 39 3399.5167 259 89 50 69.5 37.5 3437168 260 90 53 71.5 39.5 3476.5169 261 92 65 78.5 46.5 3523170 262 88 64 76 44 3567171 263 88 58 73 41 3608172 264 87 59 73 41 3649173 265 87 57 72 40 3689174 266 95 59 77 45 3734175 267 100 63 81.5 49.5 3783.5176 268 100 67 83.5 51.5 3835177 269 100 65 82.5 50.5 3885.5
178 270 98 90 94 62 3947.5179 271 100 64 82 50 3997.5180 272 99 65 82 50 4047.5181 273 101 64 82.5 50.5 4098
182 274 99 68 83.5 51.5 4149.5183 275 95 66 80.5 48.5 4198184 276 95 59 77 45 4243185 277 92 53 72.5 40.5 4283.5
186 278 90 57 73.5 41.5 4325187 279 91 56 73.5 41.5 4366.5188 280 85 51 68 36 4402.5189 281 91 59 75 43 4445.5
190 282 96 56 76 44 4489.5191 283 97 63 80 48 4537.5192 284 97 63 80 48 4585.5193 285 96 60 78 46 4631.5194 286 98 60 79 47 4678.5195 287 97 61 79 47 4725.5196 288 95 61 78 46 4771.5197 289 95 60 77.5 45.5 4817198 290 95 59 77 45 4862199 291 90 61 75.5 43.5 4905.5200 292 90 59 74.5 42.5 4948201 293 95 60 77.5 45.5 4993.5202 294 92 61 76.5 44.5 5038
203 295 93 60 76.5 44.5 5082.5204 296 95 62 78.5 46.5 5129205 297 92 61 76.5 44.5 5173.5206 298 94 61 77.5 45.5 5219
207 299 98 67 82.5 50.5 5269.5208 300 91 64 77.5 45.5 5315209 301 98 63 80.5 48.5 5363.5210 302 97 63 80 48 5411.5
211 303 94 63 78.5 46.5 5458212 304 96 66 81 49 5507213 305 90 62 76 44 5551214 306 93 58 75.5 43.5 5594.5
215 307 95 64 79.5 47.5 5642216 308 97 62 79.5 47.5 5689.5217 309 97 65 81 49 5738.5218 310 98 62 80 48 5786.5219 311 96 63 79.5 47.5 5834220 312 90 64 77 45 5879221 313 84 61 72.5 40.5 5919.5222 314 92 59 75.5 43.5 5963223 315 94 63 78.5 46.5 6009.5224 316 90 61 75.5 43.5 6053225 317 94 62 78 46 6099226 318 93 63 78 46 6145227 319 91 56 73.5 41.5 6186.5
228 320 93 59 76 44 6230.5229 321 96 65 80.5 48.5 6279230 322 94 64 79 47 6326231 323 91 61 76 44 6370
232 324 87 58 72.5 40.5 6410.5233 325 90 58 74 42 6452.5234 326 91 59 75 43 6495.5235 327 94 58 76 44 6539.5
236 328 92 63 77.5 45.5 6585237 329 92 59 75.5 43.5 6628.5238 330 95 59 77 45 6673.5239 331 91 61 76 44 6717.5
240 332 89 60 74.5 42.5 6760
241 333 88 58 73 41 6801242 334 87 56 71.5 39.5 6840.5243 335 88 56 72 40 6880.5244 336 88 56 72 40 6920.5
245 337 89 57 73 41 6961.5246 338 76 55 65.5 33.5 6995247 339 86 53 69.5 37.5 7032.5248 340 89 55 72 40 7072.5
249 341 88 54 71 39 7111.5250 342 88 53 70.5 38.5 7150251 343 90 55 72.5 40.5 7190.5252 344 91 50 70.5 38.5 7229253 345 88 56 72 40 7269254 346 85 54 69.5 37.5 7306.5255 347 79 54 66.5 34.5 7341256 348 78 53 65.5 33.5 7374.5257 349 73 45 59 27 7401.5258 350 75 44 59.5 27.5 7429259 351 80 44 62 30 7459260 352 83 52 67.5 35.5 7494.5261 353 79 55 67 35 7529.5
262 354 82 52 67 35 7564.5263 355 75 - - - 7564.5264 356 80 45 62.5 30.5 7595265 357 81 48 64.5 32.5 7627.5
266 358 84 40 62 30 7657.5267 359 85 48 66.5 34.5 7692268 360 83 48 65.5 33.5 7725.5269 361 85 48 66.5 34.5 7760
270 362 86 53 69.5 37.5 7797.5 118 881.5 length of freeze (day) 12
271 363 86 49 67.5 35.5 7833 130 831 frost depth (oF-day)50.5272 364 78 55 66.5 34.5 7867.5 average temperature 53.7273 365 72 48 60 28 7895.5
1994-1995 day of frost year degree cumulative
day of year (consecutive date) max. temp. min. temp avg. temp day (
oF) degree day (
oF)274 1 68 45 56.5 24.5 24.5275 2 72 41 56.5 24.5 49
276 3 75 44 59.5 27.5 76.5277 4 73 48 60.5 28.5 105278 5 63 50 56.5 24.5 129.5279 6 60 35 47.5 15.5 145
280 7 62 37 49.5 17.5 162.5281 8 69 41 55 23 185.5282 9 70 45 57.5 25.5 211283 10 74 42 58 26 237
284 11 71 41 56 24 261285 12 72 41 56.5 24.5 285.5286 13 74 43 58.5 26.5 312287 14 56 48 52 20 332
288 15 40 30 35 3 335289 16 49 28 38.5 6.5 341.5290 17 47 29 38 6 347.5291 18 54 34 44 12 359.5292 19 60 35 47.5 15.5 375293 20 64 34 49 17 392294 21 65 39 52 20 412295 22 68 38 53 21 433296 23 68 37 52.5 20.5 453.5297 24 62 39 50.5 18.5 472298 25 66 37 51.5 19.5 491.5299 26 65 37 51 19 510.5300 27 68 38 53 21 531.5
301 28 69 37 53 21 552.5302 29 68 38 53 21 573.5303 30 59 38 48.5 16.5 590304 31 61 27 44 12 602
305 32 64 31 47.5 15.5 617.5306 33 63 39 51 19 636.5307 34 47 33 40 8 644.5308 35 45 26 35.5 3.5 648
309 36 51 26 38.5 6.5 654.5310 37 63 33 48 16 670.5311 38 64 36 50 18 688.5312 39 57 45 51 19 707.5
313 40 55 29 42 10 717.5314 41 59 33 46 14 731.5315 42 57 38 47.5 15.5 747316 43 49 39 44 12 759317 44 44 26 35 3 762318 45 43 15 29 -3 759319 46 45 19 32 0 759320 47 46 29 37.5 5.5 764.5321 48 41 19 30 -2 762.5322 49 43 27 35 3 765.5323 50 33 25 29 -3 762.5324 51 39 15 27 -5 757.5325 52 45 22 33.5 1.5 759
326 53 46 19 32.5 0.5 759.5327 54 49 20 34.5 2.5 762328 55 48 26 37 5 767329 56 49 28 38.5 6.5 773.5
330 57 44 24 34 2 775.5331 58 49 25 37 5 780.5332 59 36 14 25 -7 773.5333 60 38 10 24 -8 765.5
334 61 44 18 31 -1 764.5335 62 49 19 34 2 766.5336 63 49 23 36 4 770.5337 64 49 25 37 5 775.5
338 65 52 30 41 9 784.5339 66 39 31 35 3 787.5340 67 45 33 39 7 794.5341 68 49 30 39.5 7.5 802342 69 37 23 30 -2 800343 70 35 12 23.5 -8.5 791.5
790
800
810
820
830
840
850
860
870
880
890
900
0 50 100 150 200
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day of frost year
Blanding, UT
1993-1994
344 71 36 13 24.5 -7.5 784
345 72 42 22 32 0 784346 73 43 23 33 1 785347 74 42 26 34 2 787348 75 42 18 30 -2 785
349 76 41 21 31 -1 784350 77 42 20 31 -1 783351 78 47 21 34 2 785352 79 51 24 37.5 5.5 790.5
353 80 50 26 38 6 796.5354 81 53 24 38.5 6.5 803355 82 50 28 39 7 810356 83 56 28 42 10 820357 84 43 32 37.5 5.5 825.5358 85 40 31 35.5 3.5 829359 86 40 33 36.5 4.5 833.5360 87 53 27 40 8 841.5361 88 47 25 36 4 845.5362 89 46 25 35.5 3.5 849363 90 47 28 37.5 5.5 854.5364 91 47 31 39 7 861.5365 92 40 20 30 -2 859.5
1 93 39 13 26 -6 853.52 94 40 20 30 -2 851.53 95 42 18 30 -2 849.54 96 33 25 29 -3 846.5
5 97 34 27 30.5 -1.5 8456 98 45 19 32 0 8457 99 35 19 27 -5 8408 100 37 26 31.5 -0.5 839.5
9 101 51 32 41.5 9.5 84910 102 52 30 41 9 85811 103 46 31 38.5 6.5 864.512 104 47 28 37.5 5.5 870
13 105 47 23 35 3 87314 106 50 28 39 7 88015 107 44 31 37.5 5.5 885.516 108 41 16 28.5 -3.5 88217 109 36 13 24.5 -7.5 874.518 110 37 11 24 -8 866.519 111 43 16 29.5 -2.5 86420 112 41 19 30 -2 86221 113 39 22 30.5 -1.5 860.522 114 37 12 24.5 -7.5 85323 115 40 17 28.5 -3.5 849.524 116 43 25 34 2 851.525 117 46 29 37.5 5.5 857
26 118 41 29 35 3 86027 119 43 24 33.5 1.5 861.528 120 45 21 33 1 862.529 121 42 20 31 -1 861.5
30 122 48 16 32 0 861.531 123 52 24 38 6 867.532 124 61 31 46 14 881.533 125 63 33 48 16 897.5
34 126 60 30 45 13 910.535 127 58 29 43.5 11.5 92236 128 60 31 45.5 13.5 935.537 129 61 31 46 14 949.5
38 130 61 31 46 14 963.539 131 40 30 35 3 966.540 132 49 28 38.5 6.5 97341 133 52 25 38.5 6.5 979.542 134 47 28 37.5 5.5 98543 135 52 29 40.5 8.5 993.544 136 55 28 41.5 9.5 100345 137 49 30 39.5 7.5 1010.546 138 47 22 34.5 2.5 101347 139 54 25 39.5 7.5 1020.548 140 55 26 40.5 8.5 102949 141 58 26 42 10 103950 142 64 30 47 15 1054
51 143 67 33 50 18 107252 144 66 37 51.5 19.5 1091.553 145 67 36 51.5 19.5 111154 146 67 40 53.5 21.5 1132.5
55 147 66 39 52.5 20.5 115356 148 62 31 46.5 14.5 1167.557 149 59 33 46 14 1181.558 150 59 33 46 14 1195.5
59 151 55 36 45.5 13.5 120960 152 55 36 45.5 13.5 1222.561 153 48 34 41 9 1231.562 154 49 33 41 9 1240.5
63 155 56 34 45 13 1253.564 156 48 34 41 9 1262.565 157 45 24 34.5 2.5 126566 158 48 20 34 2 126767 159 53 25 39 7 127468 160 60 30 45 13 128769 161 64 32 48 16 130370 162 51 36 43.5 11.5 1314.571 163 55 33 44 12 1326.572 164 58 30 44 12 1338.573 165 69 35 52 20 1358.574 166 67 38 52.5 20.5 137975 167 69 37 53 21 1400
76 168 68 44 56 24 142477 169 67 35 51 19 144378 170 66 39 52.5 20.5 1463.579 171 65 33 49 17 1480.5
80 172 69 41 55 23 1503.581 173 54 33 43.5 11.5 151582 174 65 31 48 16 153183 175 47 24 35.5 3.5 1534.5
84 176 38 25 31.5 -0.5 153485 177 48 21 34.5 2.5 1536.586 178 53 23 38 6 1542.587 179 53 27 40 8 1550.5
88 180 45 24 34.5 2.5 1553
89 181 50 20 35 3 155690 182 56 24 40 8 156491 183 60 32 46 14 157892 184 65 36 50.5 18.5 1596.5
93 185 65 32 48.5 16.5 161394 186 66 37 51.5 19.5 1632.595 187 72 37 54.5 22.5 165596 188 71 39 55 23 1678
97 189 71 39 55 23 170198 190 69 39 54 22 172399 191 39 28 33.5 1.5 1724.5100 192 49 27 38 6 1730.5101 193 58 23 40.5 8.5 1739102 194 67 31 49 17 1756103 195 72 40 56 24 1780104 196 57 36 46.5 14.5 1794.5105 197 54 35 44.5 12.5 1807106 198 65 20 42.5 10.5 1817.5107 199 43 28 35.5 3.5 1821108 200 47 26 36.5 4.5 1825.5109 201 54 29 41.5 9.5 1835
110 202 46 30 38 6 1841111 203 49 30 39.5 7.5 1848.5112 204 50 31 40.5 8.5 1857113 205 57 31 44 12 1869
114 206 60 30 45 13 1882115 207 69 34 51.5 19.5 1901.5116 208 65 35 50 18 1919.5117 209 70 39 54.5 22.5 1942
118 210 70 44 57 25 1967119 211 73 41 57 25 1992120 212 65 43 54 22 2014121 213 68 35 51.5 19.5 2033.5
122 214 64 39 51.5 19.5 2053123 215 66 37 51.5 19.5 2072.5124 216 74 40 57 25 2097.5125 217 63 39 51 19 2116.5126 218 55 37 46 14 2130.5127 219 48 31 39.5 7.5 2138128 220 63 31 47 15 2153129 221 71 37 54 22 2175130 222 68 42 55 23 2198131 223 71 42 56.5 24.5 2222.5132 224 66 47 56.5 24.5 2247133 225 70 33 51.5 19.5 2266.5134 226 75 41 58 26 2292.5
135 227 77 48 62.5 30.5 2323136 228 70 40 55 23 2346137 229 60 35 47.5 15.5 2361.5138 230 70 40 55 23 2384.5
139 231 72 41 56.5 24.5 2409140 232 81 46 63.5 31.5 2440.5141 233 79 49 64 32 2472.5142 234 78 47 62.5 30.5 2503
143 235 69 43 56 24 2527144 236 65 42 53.5 21.5 2548.5145 237 63 40 51.5 19.5 2568146 238 65 41 53 21 2589
147 239 68 36 52 20 2609148 240 60 42 51 19 2628149 241 55 40 47.5 15.5 2643.5150 242 68 37 52.5 20.5 2664151 243 76 46 61 29 2693152 244 81 45 63 31 2724153 245 78 53 65.5 33.5 2757.5154 246 73 47 60 28 2785.5155 247 75 45 60 28 2813.5156 248 82 45 63.5 31.5 2845157 249 74 50 62 30 2875158 250 74 43 58.5 26.5 2901.5159 251 64 41 52.5 20.5 2922
160 252 70 34 52 20 2942161 253 76 41 58.5 26.5 2968.5162 254 84 49 66.5 34.5 3003163 255 90 53 71.5 39.5 3042.5
164 256 90 56 73 41 3083.5165 257 90 56 73 41 3124.5166 258 89 56 72.5 40.5 3165167 259 74 56 65 33 3198
168 260 72 42 57 25 3223169 261 73 34 53.5 21.5 3244.5170 262 83 40 61.5 29.5 3274171 263 85 49 67 35 3309
172 264 84 50 67 35 3344173 265 82 47 64.5 32.5 3376.5174 266 84 53 68.5 36.5 3413175 267 85 48 66.5 34.5 3447.5176 268 90 58 74 42 3489.5177 269 89 53 71 39 3528.5178 270 91 52 71.5 39.5 3568179 271 82 54 68 36 3604180 272 86 53 69.5 37.5 3641.5181 273 85 53 69 37 3678.5182 274 85 53 69 37 3715.5183 275 85 53 69 37 3752.5184 276 82 47 64.5 32.5 3785
185 277 78 43 60.5 28.5 3813.5186 278 85 50 67.5 35.5 3849187 279 91 55 73 41 3890188 280 94 58 76 44 3934
189 281 97 61 79 47 3981190 282 97 66 81.5 49.5 4030.5191 283 97 64 80.5 48.5 4079192 284 96 60 78 46 4125
193 285 93 58 75.5 43.5 4168.5194 286 87 55 71 39 4207.5195 287 86 51 68.5 36.5 4244196 288 86 51 68.5 36.5 4280.5
197 289 91 55 73 41 4321.5
198 290 79 58 68.5 36.5 4358199 291 87 55 71 39 4397200 292 87 55 71 39 4436201 293 92 55 73.5 41.5 4477.5
202 294 90 57 73.5 41.5 4519203 295 91 54 72.5 40.5 4559.5204 296 90 55 72.5 40.5 4600205 297 93 56 74.5 42.5 4642.5
206 298 95 57 76 44 4686.5207 299 98 57 77.5 45.5 4732208 300 99 64 81.5 49.5 4781.5209 301 100 65 82.5 50.5 4832210 302 102 65 83.5 51.5 4883.5211 303 99 68 83.5 51.5 4935212 304 92 64 78 46 4981213 305 93 58 75.5 43.5 5024.5214 306 98 59 78.5 46.5 5071215 307 96 59 77.5 45.5 5116.5216 308 97 67 82 50 5166.5217 309 98 61 79.5 47.5 5214218 310 99 63 81 49 5263
219 311 99 63 81 49 5312220 312 98 63 80.5 48.5 5360.5221 313 97 61 79 47 5407.5222 314 98 60 79 47 5454.5
223 315 95 59 77 45 5499.5224 316 93 61 77 45 5544.5225 317 91 58 74.5 42.5 5587226 318 90 58 74 42 5629
227 319 91 54 72.5 40.5 5669.5228 320 85 60 72.5 40.5 5710229 321 86 59 72.5 40.5 5750.5230 322 91 55 73 41 5791.5
231 323 88 57 72.5 40.5 5832232 324 86 56 71 39 5871233 325 88 56 72 40 5911234 326 90 58 74 42 5953235 327 89 57 73 41 5994236 328 80 58 69 37 6031237 329 86 55 70.5 38.5 6069.5238 330 92 56 74 42 6111.5239 331 90 58 74 42 6153.5240 332 88 59 73.5 41.5 6195241 333 93 59 76 44 6239242 334 96 60 78 46 6285243 335 97 59 78 46 6331
244 336 97 61 79 47 6378245 337 96 63 79.5 47.5 6425.5246 338 95 63 79 47 6472.5247 339 94 62 78 46 6518.5
248 340 95 59 77 45 6563.5249 341 92 61 76.5 44.5 6608250 342 85 57 71 39 6647251 343 72 54 63 31 6678
252 344 79 52 65.5 33.5 6711.5253 345 84 50 67 35 6746.5254 346 87 47 67 35 6781.5255 347 83 47 65 33 6814.5
256 348 85 49 67 35 6849.5257 349 86 51 68.5 36.5 6886258 350 87 50 68.5 36.5 6922.5259 351 88 50 69 37 6959.5260 352 88 55 71.5 39.5 6999261 353 80 51 65.5 33.5 7032.5262 354 83 46 64.5 32.5 7065263 355 86 49 67.5 35.5 7100.5264 356 69 44 56.5 24.5 7125265 357 71 35 53 21 7146266 358 80 41 60.5 28.5 7174.5 108 882 length of freeze (day) 7
267 359 79 47 63 31 7205.5 115 849.5 frost depth (oF-day)32.5268 360 72 39 55.5 23.5 7229 average temperature 52.2269 361 77 48 62.5 30.5 7259.5
270 362 82 48 65 33 7292.5271 363 68 51 59.5 27.5 7320272 364 69 43 56 24 7344273 365 68 34 51 19 7363
1995-1996 day of frost year degree cumulative
day of year (consecutive date) max. temp. min. temp avg. temp day (
oF) degree day (
oF)274 1 71 39 55 23 23275 2 72 38 55 23 46276 3 74 40 57 25 71277 4 57 40 48.5 16.5 87.5278 5 61 30 45.5 13.5 101279 6 64 27 45.5 13.5 114.5280 7 73 37 55 23 137.5281 8 74 38 56 24 161.5282 9 74 39 56.5 24.5 186
283 10 77 41 59 27 213284 11 79 43 61 29 242285 12 78 46 62 30 272286 13 71 39 55 23 295
287 14 76 37 56.5 24.5 319.5288 15 75 41 58 26 345.5289 16 76 43 59.5 27.5 373290 17 76 44 60 28 401
291 18 77 41 59 27 428292 19 71 41 56 24 452293 20 69 37 53 21 473294 21 72 37 54.5 22.5 495.5
295 22 49 26 37.5 5.5 501296 23 54 21 37.5 5.5 506.5297 24 62 29 45.5 13.5 520298 25 65 31 48 16 536299 26 72 35 53.5 21.5 557.5300 27 72 37 54.5 22.5 580
0
200
400
600
800
1000
1200
1400
0 50 100 150 200
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day of frost year
Blanding, UT
1994-1995
301 28 69 38 53.5 21.5 601.5
302 29 72 44 58 26 627.5303 30 71 42 56.5 24.5 652304 31 68 38 53 21 673305 32 57 36 46.5 14.5 687.5
306 33 56 28 42 10 697.5307 34 55 23 39 7 704.5308 35 57 28 42.5 10.5 715309 36 58 28 43 11 726
310 37 58 33 45.5 13.5 739.5311 38 65 32 48.5 16.5 756312 39 65 34 49.5 17.5 773.5313 40 60 35 47.5 15.5 789314 41 45 25 35 3 792315 42 54 22 38 6 798316 43 61 28 44.5 12.5 810.5317 44 67 35 51 19 829.5318 45 71 37 54 22 851.5319 46 64 34 49 17 868.5320 47 65 35 50 18 886.5321 48 68 36 52 20 906.5322 49 61 34 47.5 15.5 922
323 50 63 35 49 17 939324 51 64 35 49.5 17.5 956.5325 52 59 32 45.5 13.5 970326 53 58 34 46 14 984
327 54 64 32 48 16 1000328 55 60 31 45.5 13.5 1013.5329 56 60 30 45 13 1026.5330 57 60 26 43 11 1037.5
331 58 44 20 32 0 1037.5332 59 44 18 31 -1 1036.5333 60 58 26 42 10 1046.5334 61 58 30 44 12 1058.5
335 62 59 30 44.5 12.5 1071336 63 58 30 44 12 1083337 64 57 29 43 11 1094338 65 59 32 45.5 13.5 1107.5339 66 61 32 46.5 14.5 1122340 67 62 33 47.5 15.5 1137.5341 68 47 32 39.5 7.5 1145342 69 54 26 40 8 1153343 70 52 24 38 6 1159344 71 53 27 40 8 1167345 72 54 27 40.5 8.5 1175.5346 73 53 35 44 12 1187.5347 74 55 34 44.5 12.5 1200
348 75 48 27 37.5 5.5 1205.5349 76 41 22 31.5 -0.5 1205350 77 45 22 33.5 1.5 1206.5351 78 50 23 36.5 4.5 1211
352 79 47 19 33 1 1212353 80 45 18 31.5 -0.5 1211.5354 81 39 20 29.5 -2.5 1209355 82 39 15 27 -5 1204
356 83 40 15 27.5 -4.5 1199.5357 84 39 11 25 -7 1192.5358 85 39 10 24.5 -7.5 1185359 86 38 12 25 -7 1178
360 87 42 15 28.5 -3.5 1174.5361 88 41 14 27.5 -4.5 1170362 89 39 17 28 -4 1166363 90 43 14 28.5 -3.5 1162.5364 91 45 15 30 -2 1160.5365 92 38 27 32.5 0.5 11611 93 43 23 33 1 11622 94 40 14 27 -5 11573 95 39 15 27 -5 11524 96 47 18 32.5 0.5 1152.55 97 44 21 32.5 0.5 11536 98 47 17 32 0 11537 99 51 20 35.5 3.5 1156.5
8 100 50 21 35.5 3.5 11609 101 52 24 38 6 116610 102 53 29 41 9 117511 103 59 23 41 9 1184
12 104 54 26 40 8 119213 105 54 27 40.5 8.5 1200.514 106 56 28 42 10 1210.515 107 56 27 41.5 9.5 1220
16 108 53 25 39 7 122717 109 42 18 30 -2 122518 110 33 12 22.5 -9.5 1215.519 111 40 18 29 -3 1212.5
20 112 40 18 29 -3 1209.521 113 39 20 29.5 -2.5 120722 114 38 12 25 -7 120023 115 37 7 22 -10 119024 116 40 14 27 -5 118525 117 42 10 26 -6 117926 118 35 7 21 -11 116827 119 45 8 26.5 -5.5 1162.528 120 48 22 35 3 1165.529 121 45 23 34 2 1167.530 122 40 28 34 2 1169.531 123 41 29 - - 1169.532 124 45 28 36.5 4.5 1174
33 125 41 23 32 0 117434 126 37 12 24.5 -7.5 1166.535 127 43 16 29.5 -2.5 116436 128 52 25 38.5 6.5 1170.5
37 129 57 30 43.5 11.5 118238 130 58 31 44.5 12.5 1194.539 131 66 30 48 16 1210.540 132 64 32 48 16 1226.5
41 133 66 36 51 19 1245.542 134 56 35 45.5 13.5 125943 135 63 34 48.5 16.5 1275.544 136 65 32 48.5 16.5 1292
45 137 68 31 49.5 17.5 1309.5
46 138 67 34 50.5 18.5 132847 139 65 33 49 17 134548 140 62 43 52.5 20.5 1365.549 141 59 34 46.5 14.5 1380
50 142 54 31 42.5 10.5 1390.551 143 57 46 51.5 19.5 141052 144 38 39 38.5 6.5 1416.553 145 54 26 40 8 1424.5
54 146 47 15 31 -1 1423.555 147 56 23 39.5 7.5 143156 148 52 23 37.5 5.5 1436.557 149 34 13 23.5 -8.5 142858 150 34 10 22 -10 141859 151 42 14 28 -4 141460 152 46 20 33 1 141561 153 48 18 33 1 141662 154 55 19 37 5 142163 155 57 27 42 10 143164 156 59 35 47 15 144665 157 59 31 45 13 145966 158 48 24 36 4 1463
67 159 55 21 38 6 146968 160 62 28 45 13 148269 161 70 29 49.5 17.5 1499.570 162 67 36 51.5 19.5 1519
71 163 67 35 51 19 153872 164 63 34 48.5 16.5 1554.573 165 54 30 42 10 1564.574 166 55 24 39.5 7.5 1572
75 167 61 28 44.5 12.5 1584.576 168 63 38 50.5 18.5 160377 169 56 31 43.5 11.5 1614.578 170 55 23 39 7 1621.5
79 171 58 28 43 11 1632.580 172 67 30 48.5 16.5 164981 173 71 38 54.5 22.5 1671.582 174 70 26 48 16 1687.583 175 62 28 45 13 1700.584 176 22 49 35.5 3.5 170485 177 31 56 43.5 11.5 1715.586 178 26 59 42.5 10.5 172687 179 62 36 49 17 174388 180 66 33 49.5 17.5 1760.589 181 51 31 41 9 1769.590 182 60 27 43.5 11.5 178191 183 68 32 50 18 1799
92 184 74 37 55.5 23.5 1822.593 185 69 39 54 22 1844.594 186 65 33 49 17 1861.595 187 63 34 48.5 16.5 1878
96 188 61 30 45.5 13.5 1891.597 189 70 30 50 18 1909.598 190 75 40 57.5 25.5 193599 191 80 46 63 31 1966
100 192 83 46 64.5 32.5 1998.5101 193 74 46 60 28 2026.5102 194 67 37 52 20 2046.5103 195 63 31 47 15 2061.5
104 196 49 28 38.5 6.5 2068105 197 55 25 40 8 2076106 198 65 29 47 15 2091107 199 72 39 55.5 23.5 2114.5108 200 67 36 51.5 19.5 2134109 201 61 35 48 16 2150110 202 57 23 40 8 2158111 203 60 31 45.5 13.5 2171.5112 204 60 25 42.5 10.5 2182113 205 65 30 47.5 15.5 2197.5114 206 76 37 56.5 24.5 2222115 207 82 47 64.5 32.5 2254.5116 208 71 50 60.5 28.5 2283
117 209 81 41 61 29 2312118 210 80 46 63 31 2343119 211 65 38 51.5 19.5 2362.5120 212 62 29 45.5 13.5 2376
121 213 75 39 57 25 2401122 214 78 45 61.5 29.5 2430.5123 215 81 47 64 32 2462.5124 216 81 49 65 33 2495.5
125 217 83 46 64.5 32.5 2528126 218 84 46 65 33 2561127 219 84 49 66.5 34.5 2595.5128 220 86 49 67.5 35.5 2631
129 221 83 48 65.5 33.5 2664.5130 222 82 47 64.5 32.5 2697131 223 81 46 63.5 31.5 2728.5132 224 88 47 67.5 35.5 2764133 225 92 54 73 41 2805134 226 92 54 73 41 2846135 227 89 55 72 40 2886136 228 88 52 70 38 2924137 229 87 53 70 38 2962138 230 84 50 67 35 2997139 231 89 63 76 44 3041140 232 86 53 69.5 37.5 3078.5141 233 79 45 62 30 3108.5
142 234 85 47 66 34 3142.5143 235 83 50 66.5 34.5 3177144 236 72 46 59 27 3204145 237 69 42 55.5 23.5 3227.5
146 238 60 37 48.5 16.5 3244147 239 65 35 50 18 3262148 240 76 39 57.5 25.5 3287.5149 241 75 45 60 28 3315.5
150 242 80 46 63 31 3346.5151 243 80 49 64.5 32.5 3379152 244 82 47 64.5 32.5 3411.5153 245 80 49 64.5 32.5 3444
154 246 88 51 69.5 37.5 3481.5
155 247 89 56 72.5 40.5 3522156 248 96 58 77 45 3567157 249 95 59 77 45 3612158 250 91 61 76 44 3656
159 251 92 64 78 46 3702160 252 95 59 77 45 3747161 253 95 59 77 45 3792162 254 95 58 76.5 44.5 3836.5
163 255 93 58 75.5 43.5 3880164 256 91 59 75 43 3923165 257 89 60 74.5 42.5 3965.5166 258 85 57 71 39 4004.5167 259 85 57 71 39 4043.5168 260 91 53 72 40 4083.5169 261 93 56 74.5 42.5 4126170 262 91 55 73 41 4167171 263 91 60 75.5 43.5 4210.5172 264 92 60 76 44 4254.5173 265 85 55 70 38 4292.5174 266 86 55 70.5 38.5 4331175 267 88 54 71 39 4370
176 268 90 54 72 40 4410177 269 91 57 74 42 4452178 270 82 55 68.5 36.5 4488.5179 271 76 55 65.5 33.5 4522
180 272 83 56 69.5 37.5 4559.5181 273 88 55 71.5 39.5 4599182 274 89 64 76.5 44.5 4643.5183 275 93 57 75 43 4686.5
184 276 96 60 78 46 4732.5185 277 95 64 79.5 47.5 4780186 278 94 65 79.5 47.5 4827.5187 279 96 70 83 51 4878.5
188 280 99 59 79 47 4925.5189 281 95 68 81.5 49.5 4975190 282 92 64 78 46 5021191 283 88 61 74.5 42.5 5063.5192 284 93 64 78.5 46.5 5110193 285 92 63 77.5 45.5 5155.5194 286 96 65 80.5 48.5 5204195 287 90 67 78.5 46.5 5250.5196 288 95 62 78.5 46.5 5297197 289 95 63 79 47 5344198 290 88 59 73.5 41.5 5385.5199 291 88 63 75.5 43.5 5429200 292 93 63 78 46 5475
201 293 95 66 80.5 48.5 5523.5202 294 96 65 80.5 48.5 5572203 295 98 66 82 50 5622204 296 100 70 85 53 5675
205 297 96 71 83.5 51.5 5726.5206 298 97 67 82 50 5776.5207 299 96 69 82.5 50.5 5827208 300 96 63 79.5 47.5 5874.5
209 301 95 65 80 48 5922.5210 302 91 63 77 45 5967.5211 303 89 64 76.5 44.5 6012212 304 95 65 80 48 6060
213 305 100 66 83 51 6111214 306 97 65 81 49 6160215 307 96 65 80.5 48.5 6208.5216 308 91 65 78 46 6254.5217 309 88 62 75 43 6297.5218 310 90 57 73.5 41.5 6339219 311 89 57 73 41 6380220 312 94 61 77.5 45.5 6425.5221 313 90 60 75 43 6468.5222 314 87 61 74 42 6510.5223 315 90 56 73 41 6551.5224 316 94 62 78 46 6597.5225 317 98 61 79.5 47.5 6645
226 318 101 67 84 52 6697227 319 100 69 84.5 52.5 6749.5228 320 94 70 82 50 6799.5229 321 94 63 78.5 46.5 6846
230 322 92 64 78 46 6892231 323 91 59 75 43 6935232 324 91 59 75 43 6978233 325 89 66 77.5 45.5 7023.5
234 326 88 59 73.5 41.5 7065235 327 89 62 75.5 43.5 7108.5236 328 86 56 71 39 7147.5237 329 84 60 72 40 7187.5
238 330 86 61 73.5 41.5 7229239 331 83 58 70.5 38.5 7267.5240 332 87 59 73 41 7308.5241 333 90 61 75.5 43.5 7352242 334 93 63 78 46 7398243 335 91 59 75 43 7441244 336 92 62 77 45 7486245 337 93 62 77.5 45.5 7531.5246 338 88 59 73.5 41.5 7573247 339 92 60 76 44 7617248 340 92 61 76.5 44.5 7661.5249 341 81 57 69 37 7698.5250 342 80 56 68 36 7734.5
251 343 83 53 68 36 7770.5252 344 88 54 71 39 7809.5253 345 89 56 72.5 40.5 7850254 346 86 58 72 40 7890
255 347 77 56 66.5 34.5 7924.5256 348 78 56 67 35 7959.5257 349 70 50 60 28 7987.5258 350 60 47 53.5 21.5 8009
259 351 73 41 57 25 8034260 352 71 43 57 25 8059261 353 61 41 51 19 8078262 354 50 35 42.5 10.5 8088.5
200
400
600
800
1000
1200
1400
1600
1800
fr
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Blanding, UT
1995-1996
263 355 61 33 47 15 8103.5
264 356 73 39 56 24 8127.5265 357 78 44 61 29 8156.5266 358 79 50 64.5 32.5 8189267 359 80 50 65 33 8222
268 360 79 50 64.5 32.5 8254.5269 361 80 46 63 31 8285.5270 362 65 45 55 23 8308.5 109 1225 length of freeze (day) 18
271 363 60 33 46.5 14.5 8323 127 1164 frost depth (oF-day)61272 364 74 40 57 25 8348 average temperature 55.0273 365 75 44 59.5 27.5 8375.5274 366 79 48 63.5 31.5 8407
1996-1997
day of frost year degree cumulative
day of year (consecutive date) max. temp. min. temp avg. temp day (
oF) degree day (
oF)274 1 79 49 64 32 32275 2 77 52 64.5 32.5 64.5276 3 62 46 54 22 86.5
277 4 69 47 58 26 112.5278 5 68 45 56.5 24.5 137279 6 79 48 63.5 31.5 168.5280 7 80 50 65 33 201.5
281 8 81 51 66 34 235.5282 9 79 52 65.5 33.5 269283 10 79 54 66.5 34.5 303.5284 11 78 50 64 32 335.5
285 12 77 49 63 31 366.5286 13 76 49 62.5 30.5 397287 14 76 52 64 32 429288 15 72 46 59 27 456289 16 70 44 57 25 481290 17 59 36 47.5 15.5 496.5291 18 65 35 50 18 514.5292 19 69 40 54.5 22.5 537293 20 47 32 39.5 7.5 544.5294 21 43 26 34.5 2.5 547295 22 55 20 37.5 5.5 552.5296 23 59 29 44 12 564.5297 24 59 31 45 13 577.5
298 25 48 26 37 5 582.5299 26 47 23 35 3 585.5300 27 45 33 39 7 592.5301 28 44 31 37.5 5.5 598
302 29 46 30 38 6 604303 30 53 30 41.5 9.5 613.5304 31 51 33 42 10 623.5305 32 57 28 42.5 10.5 634
306 33 58 31 44.5 12.5 646.5307 34 51 39 45 13 659.5308 35 49 34 41.5 9.5 669309 36 53 33 43 11 680
310 37 48 28 38 6 686311 38 49 22 35.5 3.5 689.5312 39 57 27 42 10 699.5313 40 66 34 50 18 717.5314 41 60 32 46 14 731.5315 42 59 32 45.5 13.5 745316 43 60 35 47.5 15.5 760.5317 44 60 34 47 15 775.5318 45 53 38 45.5 13.5 789319 46 45 31 38 6 795320 47 43 22 32.5 0.5 795.5321 48 33 22 27.5 -4.5 791322 49 50 35 42.5 10.5 801.5
323 50 56 34 45 13 814.5324 51 59 38 48.5 16.5 831325 52 56 37 46.5 14.5 845.5326 53 49 38 43.5 11.5 857
327 54 51 34 42.5 10.5 867.5328 55 51 30 40.5 8.5 876329 56 53 30 41.5 9.5 885.5330 57 49 32 40.5 8.5 894
331 58 45 25 35 3 897332 59 47 27 37 5 902333 60 36 27 31.5 -0.5 901.5334 61 42 25 33.5 1.5 903
335 62 40 15 27.5 -4.5 898.5336 63 38 16 27 -5 893.5337 64 39 14 26.5 -5.5 888338 65 42 19 30.5 -1.5 886.5339 66 37 19 28 -4 882.5340 67 44 27 35.5 3.5 886341 68 49 25 37 5 891342 69 51 20 35.5 3.5 894.5343 70 53 32 42.5 10.5 905344 71 50 35 42.5 10.5 915.5345 72 45 36 40.5 8.5 924346 73 51 33 42 10 934347 74 52 34 43 11 945
348 75 40 24 32 0 945349 76 39 20 29.5 -2.5 942.5350 77 42 19 30.5 -1.5 941351 78 26 9 17.5 -14.5 926.5
352 79 25 2 13.5 -18.5 908353 80 39 9 24 -8 900354 81 36 16 26 -6 894355 82 37 25 31 -1 893
356 83 50 30 40 8 901357 84 39 20 29.5 -2.5 898.5358 85 37 16 26.5 -5.5 893359 86 39 18 28.5 -3.5 889.5
360 87 40 23 31.5 -0.5 889361 88 43 32 37.5 5.5 894.5362 89 47 30 38.5 6.5 901363 90 45 29 37 5 906364 91 46 32 39 7 913365 92 53 32 42.5 10.5 923.5
0 0 50 100 150 200
day of frost year
1 93 49 33 41 9 932.5
2 94 45 35 40 8 940.53 95 47 33 40 8 948.54 96 43 26 34.5 2.5 9515 97 33 24 28.5 -3.5 947.5
6 98 32 16 24 -8 939.57 99 35 10 22.5 -9.5 9308 100 41 22 31.5 -0.5 929.59 101 48 19 33.5 1.5 931
10 102 45 24 34.5 2.5 933.511 103 40 24 32 0 933.512 104 37 25 31 -1 932.513 105 29 24 26.5 -5.5 92714 106 32 12 22 -10 91715 107 32 3 17.5 -14.5 902.516 108 33 6 19.5 -12.5 89017 109 30 4 17 -15 87518 110 30 0 15 -17 85819 111 35 7 21 -11 84720 112 43 12 27.5 -4.5 842.521 113 40 20 30 -2 840.522 114 37 20 28.5 -3.5 837
23 115 39 28 33.5 1.5 838.524 116 42 19 30.5 -1.5 83725 117 36 25 30.5 -1.5 835.526 118 46 32 39 7 842.5
27 119 53 30 41.5 9.5 85228 120 47 25 36 4 85629 121 42 30 36 4 86030 122 52 25 38.5 6.5 866.5
31 123 51 27 39 7 873.532 124 57 32 44.5 12.5 88633 125 51 31 41 9 89534 126 43 24 33.5 1.5 896.5
35 127 46 23 34.5 2.5 89936 128 50 27 38.5 6.5 905.537 129 35 18 26.5 -5.5 90038 130 36 12 24 -8 89239 131 45 16 30.5 -1.5 890.540 132 43 22 32.5 0.5 89141 133 50 22 36 4 89542 134 56 28 42 10 90543 135 46 25 35.5 3.5 908.544 136 40 24 32 0 908.545 137 48 19 33.5 1.5 91046 138 49 25 37 5 91547 139 53 26 39.5 7.5 922.5
48 140 54 34 44 12 934.549 141 57 32 44.5 12.5 94750 142 56 27 41.5 9.5 956.551 143 43 27 35 3 959.5
52 144 42 21 31.5 -0.5 95953 145 44 18 31 -1 95854 146 42 26 34 2 96055 147 37 24 30.5 -1.5 958.5
56 148 47 26 36.5 4.5 96357 149 42 18 30 -2 96158 150 31 28 29.5 -2.5 958.559 151 41 18 29.5 -2.5 956
60 152 40 12 26 -6 95061 153 44 18 31 -1 94962 154 49 23 36 4 95363 155 38 17 27.5 -4.5 948.564 156 43 11 27 -5 943.565 157 54 32 43 11 954.566 158 54 28 41 9 963.567 159 57 31 44 12 975.568 160 58 34 46 14 989.569 161 65 35 50 18 1007.570 162 65 34 49.5 17.5 102571 163 67 38 52.5 20.5 1045.572 164 61 36 48.5 16.5 1062
73 165 61 42 51.5 19.5 1081.574 166 65 35 50 18 1099.575 167 66 39 52.5 20.5 112076 168 62 41 51.5 19.5 1139.5
77 169 65 34 49.5 17.5 115778 170 70 40 55 23 118079 171 72 39 55.5 23.5 1203.580 172 73 42 57.5 25.5 1229
81 173 72 44 58 26 125582 174 70 40 55 23 127883 175 58 33 45.5 13.5 1291.584 176 56 28 42 10 1301.5
85 177 62 33 47.5 15.5 131786 178 67 33 50 18 133587 179 68 37 52.5 20.5 1355.588 180 57 34 45.5 13.5 136989 181 64 32 48 16 138590 182 63 40 51.5 19.5 1404.591 183 43 30 36.5 4.5 140992 184 58 30 44 12 142193 185 62 35 48.5 16.5 1437.594 186 42 33 37.5 5.5 144395 187 43 26 34.5 2.5 1445.596 188 49 23 36 4 1449.597 189 56 32 44 12 1461.5
98 190 56 32 44 12 1473.599 191 62 35 48.5 16.5 1490100 192 51 20 35.5 3.5 1493.5101 193 43 22 32.5 0.5 1494
102 194 42 20 31 -1 1493103 195 51 20 35.5 3.5 1496.5104 196 60 29 44.5 12.5 1509105 197 66 37 51.5 19.5 1528.5
106 198 71 43 57 25 1553.5107 199 74 40 57 25 1578.5108 200 73 41 57 25 1603.5109 201 74 42 58 26 1629.5
110 202 73 45 59 27 1656.5
111 203 73 47 60 28 1684.5112 204 67 39 53 21 1705.5113 205 55 34 44.5 12.5 1718114 206 52 32 42 10 1728
115 207 61 33 47 15 1743116 208 64 35 49.5 17.5 1760.5117 209 68 38 53 21 1781.5118 210 73 46 59.5 27.5 1809
119 211 68 47 57.5 25.5 1834.5120 212 66 35 50.5 18.5 1853121 213 62 35 48.5 16.5 1869.5122 214 59 26 42.5 10.5 1880123 215 72 37 54.5 22.5 1902.5124 216 79 48 63.5 31.5 1934125 217 81 48 64.5 32.5 1966.5126 218 83 52 67.5 35.5 2002127 219 80 50 65 33 2035128 220 76 49 62.5 30.5 2065.5129 221 77 46 61.5 29.5 2095130 222 73 43 58 26 2121131 223 80 43 61.5 29.5 2150.5
132 224 79 50 64.5 32.5 2183133 225 84 48 66 34 2217134 226 86 51 68.5 36.5 2253.5135 227 85 54 69.5 37.5 2291
136 228 88 55 71.5 39.5 2330.5137 229 88 52 70 38 2368.5138 230 86 56 71 39 2407.5139 231 82 53 67.5 35.5 2443
140 232 78 40 59 27 2470141 233 63 47 55 23 2493142 234 69 48 58.5 26.5 2519.5143 235 78 44 61 29 2548.5
144 236 62 44 53 21 2569.5145 237 69 39 54 22 2591.5146 238 64 37 50.5 18.5 2610147 239 72 43 57.5 25.5 2635.5148 240 80 49 64.5 32.5 2668149 241 89 56 72.5 40.5 2708.5150 242 87 57 72 40 2748.5151 243 93 60 76.5 44.5 2793152 244 91 50 70.5 38.5 2831.5153 245 92 58 75 43 2874.5154 246 91 57 74 42 2916.5155 247 89 57 73 41 2957.5156 248 88 54 71 39 2996.5
157 249 79 54 66.5 34.5 3031158 250 64 48 56 24 3055159 251 73 43 58 26 3081160 252 72 48 60 28 3109
161 253 78 51 64.5 32.5 3141.5162 254 83 51 67 35 3176.5163 255 81 50 65.5 33.5 3210164 256 80 48 64 32 3242
165 257 80 55 67.5 35.5 3277.5166 258 78 50 64 32 3309.5167 259 86 49 67.5 35.5 3345168 260 86 49 67.5 35.5 3380.5
169 261 92 54 73 41 3421.5170 262 92 60 76 44 3465.5171 263 92 57 74.5 42.5 3508172 264 91 56 73.5 41.5 3549.5173 265 91 57 74 42 3591.5174 266 88 56 72 40 3631.5175 267 91 55 73 41 3672.5176 268 93 57 75 43 3715.5177 269 93 59 76 44 3759.5178 270 91 60 75.5 43.5 3803179 271 89 56 72.5 40.5 3843.5180 272 88 55 71.5 39.5 3883181 273 90 53 71.5 39.5 3922.5
182 274 87 52 69.5 37.5 3960183 275 94 53 73.5 41.5 4001.5184 276 88 53 70.5 38.5 4040185 277 91 56 73.5 41.5 4081.5
186 278 92 58 75 43 4124.5187 279 94 58 76 44 4168.5188 280 95 60 77.5 45.5 4214189 281 95 60 77.5 45.5 4259.5
190 282 94 59 76.5 44.5 4304191 283 92 61 76.5 44.5 4348.5192 284 87 58 72.5 40.5 4389193 285 89 56 72.5 40.5 4429.5
194 286 92 56 74 42 4471.5195 287 97 62 79.5 47.5 4519196 288 98 62 80 48 4567197 289 101 64 82.5 50.5 4617.5198 290 98 63 80.5 48.5 4666199 291 95 65 80 48 4714200 292 92 61 76.5 44.5 4758.5201 293 88 57 72.5 40.5 4799202 294 91 59 75 43 4842203 295 92 60 76 44 4886204 296 87 57 72 40 4926205 297 91 58 74.5 42.5 4968.5206 298 96 62 79 47 5015.5
207 299 86 63 74.5 42.5 5058208 300 89 57 73 41 5099209 301 75 58 66.5 34.5 5133.5210 302 85 57 71 39 5172.5
211 303 69 60 64.5 32.5 5205212 304 81 56 68.5 36.5 5241.5213 305 88 58 73 41 5282.5214 306 88 62 75 43 5325.5
215 307 91 63 77 45 5370.5216 308 79 59 69 37 5407.5217 309 82 60 71 39 5446.5218 310 82 59 70.5 38.5 5485
219 311 85 55 70 38 5523
220 312 88 59 73.5 41.5 5564.5221 313 88 63 75.5 43.5 5608222 314 72 52 62 30 5638223 315 77 56 66.5 34.5 5672.5
224 316 88 55 71.5 39.5 5712225 317 86 58 72 40 5752226 318 86 57 71.5 39.5 5791.5227 319 92 56 74 42 5833.5
228 320 87 57 72 40 5873.5229 321 85 58 71.5 39.5 5913230 322 84 56 70 38 5951231 323 88 58 73 41 5992232 324 90 59 74.5 42.5 6034.5233 325 92 62 77 45 6079.5234 326 91 64 77.5 45.5 6125235 327 89 62 75.5 43.5 6168.5236 328 90 59 74.5 42.5 6211237 329 87 59 73 41 6252238 330 85 59 72 40 6292239 331 87 57 72 40 6332240 332 89 59 74 42 6374
241 333 88 62 75 43 6417242 334 82 58 70 38 6455243 335 80 57 68.5 36.5 6491.5244 336 85 58 71.5 39.5 6531
245 337 88 60 74 42 6573246 338 86 61 73.5 41.5 6614.5247 339 83 56 69.5 37.5 6652248 340 88 55 71.5 39.5 6691.5
249 341 82 60 71 39 6730.5250 342 89 56 72.5 40.5 6771251 343 92 60 76 44 6815252 344 87 55 71 39 6854
253 345 87 55 71 39 6893254 346 80 54 67 35 6928255 347 80 51 65.5 33.5 6961.5256 348 84 56 70 38 6999.5257 349 79 53 66 34 7033.5258 350 72 56 64 32 7065.5259 351 73 55 64 32 7097.5260 352 79 54 66.5 34.5 7132261 353 82 57 69.5 37.5 7169.5262 354 81 53 67 35 7204.5263 355 84 55 69.5 37.5 7242264 356 70 53 61.5 29.5 7271.5265 357 72 48 60 28 7299.5
266 358 75 44 59.5 27.5 7327267 359 77 48 62.5 30.5 7357.5268 360 80 51 65.5 33.5 7391 96 951 length of freeze (day) 21
269 361 80 52 66 34 7425 117 835.5 frost depth (oF-day)115.5270 362 80 50 65 33 7458 average temperature 52.7
271 363 82 60 71 39 7497272 364 82 48 65 33 7530273 365 83 52 67.5 35.5 7565.5
1997-1998 day of frost year degree cumulative
day of year (consecutive date) max. temp. min. temp avg. temp day (
oF) degree day (
oF)274 1 84 53 68.5 36.5 36.5275 2 76 53 64.5 32.5 69276 3 72 47 59.5 27.5 96.5277 4 69 47 58 26 122.5278 5 77 46 61.5 29.5 152279 6 78 50 64 32 184
280 7 66 43 54.5 22.5 206.5281 8 58 35 46.5 14.5 221282 9 67 37 52 20 241283 10 75 49 62 30 271
284 11 60 36 48 16 287285 12 49 29 39 7 294286 13 59 25 42 10 304287 14 67 34 50.5 18.5 322.5
288 15 72 38 55 23 345.5289 16 71 48 59.5 27.5 373290 17 72 41 56.5 24.5 397.5291 18 72 42 57 25 422.5
292 19 71 43 57 25 447.5293 20 69 43 56 24 471.5294 21 69 41 55 23 494.5295 22 65 41 53 21 515.5296 23 57 35 46 14 529.5297 24 44 28 36 4 533.5298 25 43 24 33.5 1.5 535299 26 57 24 40.5 8.5 543.5300 27 54 24 39 7 550.5301 28 60 31 45.5 13.5 564302 29 60 33 46.5 14.5 578.5303 30 65 37 51 19 597.5304 31 70 38 54 22 619.5
305 32 58 34 46 14 633.5306 33 60 30 45 13 646.5307 34 60 32 46 14 660.5308 35 66 34 50 18 678.5
309 36 66 39 52.5 20.5 699310 37 65 36 50.5 18.5 717.5311 38 65 37 51 19 736.5312 39 62 39 50.5 18.5 755
313 40 52 33 42.5 10.5 765.5314 41 47 30 38.5 6.5 772315 42 56 33 44.5 12.5 784.5316 43 47 28 37.5 5.5 790
317 44 49 32 40.5 8.5 798.5318 45 46 23 34.5 2.5 801319 46 44 18 31 -1 800320 47 43 24 33.5 1.5 801.5321 48 47 22 34.5 2.5 804322 49 48 24 36 4 808
0
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1000
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1400
0 50 100 150 200
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day of frost year
Blanding, UT
1996-1997
323 50 51 30 40.5 8.5 816.5
324 51 54 30 42 10 826.5325 52 44 23 33.5 1.5 828326 53 49 23 36 4 832327 54 51 25 38 6 838
328 55 56 29 42.5 10.5 848.5329 56 54 35 44.5 12.5 861330 57 53 42 47.5 15.5 876.5331 58 46 28 37 5 881.5
332 59 50 22 36 4 885.5333 60 50 28 39 7 892.5334 61 50 29 39.5 7.5 900335 62 49 32 40.5 8.5 908.5336 63 47 28 37.5 5.5 914337 64 43 23 33 1 915338 65 43 20 31.5 -0.5 914.5339 66 43 21 32 0 914.5340 67 49 25 37 5 919.5341 68 40 30 35 3 922.5342 69 38 20 29 -3 919.5343 70 38 15 26.5 -5.5 914344 71 36 23 29.5 -2.5 911.5
345 72 36 15 25.5 -6.5 905346 73 43 15 29 -3 902347 74 42 14 28 -4 898348 75 42 20 31 -1 897
349 76 46 25 35.5 3.5 900.5350 77 48 22 35 3 903.5351 78 46 22 34 2 905.5352 79 48 29 38.5 6.5 912
353 80 52 24 38 6 918354 81 48 26 37 5 923355 82 33 22 27.5 -4.5 918.5356 83 47 27 37 5 923.5
357 84 45 22 33.5 1.5 925358 85 30 19 24.5 -7.5 917.5359 86 36 16 26 -6 911.5360 87 40 9 24.5 -7.5 904361 88 32 11 21.5 -10.5 893.5362 89 38 11 24.5 -7.5 886363 90 48 18 33 1 887364 91 57 23 40 8 895365 92 48 25 36.5 4.5 899.51 93 48 28 38 6 905.52 94 55 31 43 11 916.53 95 50 32 41 9 925.54 96 45 32 38.5 6.5 932
5 97 39 25 32 0 9326 98 44 21 32.5 0.5 932.57 99 36 16 26 -6 926.58 100 49 18 33.5 1.5 928
9 101 42 21 31.5 -0.5 927.510 102 32 28 30 -2 925.511 103 36 30 33 1 926.512 104 44 30 37 5 931.5
13 105 38 6 22 -10 921.514 106 44 21 32.5 0.5 92215 107 40 24 32 0 92216 108 49 24 36.5 4.5 926.5
17 109 45 29 37 5 931.518 110 53 29 41 9 940.519 111 48 29 38.5 6.5 94720 112 42 19 30.5 -1.5 945.521 113 44 21 32.5 0.5 94622 114 39 18 28.5 -3.5 942.523 115 50 21 35.5 3.5 94624 116 51 23 37 5 95125 117 51 25 38 6 95726 118 53 28 40.5 8.5 965.527 119 51 31 41 9 974.528 120 55 28 41.5 9.5 98429 121 54 27 40.5 8.5 992.5
30 122 51 29 40 8 1000.531 123 50 26 38 6 1006.532 124 48 22 35 3 1009.533 125 39 29 34 2 1011.5
34 126 52 33 42.5 10.5 102235 127 45 33 39 7 102936 128 48 31 39.5 7.5 1036.537 129 46 27 36.5 4.5 1041
38 130 46 29 37.5 5.5 1046.539 131 35 28 31.5 -0.5 104640 132 45 22 33.5 1.5 1047.541 133 46 22 34 2 1049.5
42 134 44 21 32.5 0.5 105043 135 48 23 35.5 3.5 1053.544 136 45 25 35 3 1056.545 137 45 26 35.5 3.5 106046 138 44 29 36.5 4.5 1064.547 139 47 21 34 2 1066.548 140 44 20 32 0 1066.549 141 48 22 35 3 1069.550 142 46 22 34 2 1071.551 143 47 29 38 6 1077.552 144 49 24 36.5 4.5 108253 145 46 28 37 5 108754 146 53 33 43 11 1098
55 147 58 31 44.5 12.5 1110.556 148 43 22 32.5 0.5 111157 149 39 18 28.5 -3.5 1107.558 150 38 15 26.5 -5.5 1102
59 151 38 15 26.5 -5.5 1096.560 152 45 16 30.5 -1.5 109561 153 52 23 37.5 5.5 1100.562 154 55 28 41.5 9.5 1110
63 155 54 31 42.5 10.5 1120.564 156 54 29 41.5 9.5 113065 157 49 31 40 8 113866 158 40 19 29.5 -2.5 1135.5
67 159 41 15 28 -4 1131.5
68 160 43 21 32 0 1131.569 161 52 23 37.5 5.5 113770 162 56 27 41.5 9.5 1146.571 163 59 31 45 13 1159.5
72 164 64 35 49.5 17.5 117773 165 60 36 48 16 119374 166 65 36 50.5 18.5 1211.575 167 65 35 50 18 1229.5
76 168 63 35 49 17 1246.577 169 42 22 32 0 1246.578 170 53 23 38 6 1252.579 171 59 27 43 11 1263.580 172 65 27 46 14 1277.581 173 70 38 54 22 1299.582 174 74 40 57 25 1324.583 175 76 45 60.5 28.5 135384 176 71 43 57 25 137885 177 56 39 47.5 15.5 1393.586 178 54 32 43 11 1404.587 179 47 31 39 7 1411.588 180 41 24 32.5 0.5 1412
89 181 44 19 31.5 -0.5 1411.590 182 54 24 39 7 1418.591 183 57 29 43 11 1429.592 184 51 28 39.5 7.5 1437
93 185 59 31 45 13 145094 186 60 33 46.5 14.5 1464.595 187 57 29 43 11 1475.596 188 53 32 42.5 10.5 1486
97 189 50 28 39 7 149398 190 54 28 41 9 150299 191 59 31 45 13 1515100 192 68 37 52.5 20.5 1535.5
101 193 73 43 58 26 1561.5102 194 54 - - - 1561.5103 195 56 29 42.5 10.5 1572104 196 54 35 44.5 12.5 1584.5105 197 49 28 38.5 6.5 1591106 198 50 26 38 6 1597107 199 56 26 41 9 1606108 200 55 29 42 10 1616109 201 67 31 49 17 1633110 202 67 36 51.5 19.5 1652.5111 203 72 39 55.5 23.5 1676112 204 74 41 57.5 25.5 1701.5113 205 80 46 63 31 1732.5
114 206 72 42 57 25 1757.5115 207 64 36 50 18 1775.5116 208 63 36 49.5 17.5 1793117 209 61 37 49 17 1810
118 210 69 35 52 20 1830119 211 71 37 54 22 1852120 212 78 41 59.5 27.5 1879.5121 213 79 44 61.5 29.5 1909
122 214 77 44 60.5 28.5 1937.5123 215 76 44 60 28 1965.5124 216 75 45 60 28 1993.5125 217 72 41 56.5 24.5 2018
126 218 61 38 49.5 17.5 2035.5127 219 69 38 53.5 21.5 2057128 220 72 43 57.5 25.5 2082.5129 221 72 41 56.5 24.5 2107130 222 74 41 57.5 25.5 2132.5131 223 70 39 54.5 22.5 2155132 224 72 39 55.5 23.5 2178.5133 225 66 41 53.5 21.5 2200134 226 59 37 48 16 2216135 227 67 33 50 18 2234136 228 78 41 59.5 27.5 2261.5137 229 82 44 63 31 2292.5138 230 83 47 65 33 2325.5
139 231 83 51 67 35 2360.5140 232 80 51 65.5 33.5 2394141 233 71 46 58.5 26.5 2420.5142 234 71 39 55 23 2443.5
143 235 74 38 56 24 2467.5144 236 78 47 62.5 30.5 2498145 237 78 50 64 32 2530146 238 80 49 64.5 32.5 2562.5
147 239 80 45 62.5 30.5 2593148 240 84 50 67 35 2628149 241 84 52 68 36 2664150 242 82 53 67.5 35.5 2699.5
151 243 88 52 70 38 2737.5152 244 89 52 70.5 38.5 2776153 245 89 53 71 39 2815154 246 84 54 69 37 2852155 247 74 46 60 28 2880156 248 75 41 58 26 2906157 249 87 49 68 36 2942158 250 82 51 66.5 34.5 2976.5159 251 76 42 59 27 3003.5160 252 76 46 61 29 3032.5161 253 75 46 60.5 28.5 3061162 254 78 45 61.5 29.5 3090.5163 255 82 46 64 32 3122.5
164 256 74 52 63 31 3153.5165 257 79 49 64 32 3185.5166 258 81 44 62.5 30.5 3216167 259 88 52 70 38 3254
168 260 70 44 57 25 3279169 261 79 44 61.5 29.5 3308.5170 262 89 52 70.5 38.5 3347171 263 89 58 73.5 41.5 3388.5
172 264 88 58 73 41 3429.5173 265 89 51 70 38 3467.5174 266 88 51 69.5 37.5 3505175 267 87 48 67.5 35.5 3540.5
176 268 91 54 72.5 40.5 3581
177 269 91 55 73 41 3622178 270 93 58 75.5 43.5 3665.5179 271 97 63 80 48 3713.5180 272 99 64 81.5 49.5 3763
181 273 98 63 80.5 48.5 3811.5182 274 96 61 78.5 46.5 3858183 275 93 61 77 45 3903184 276 96 66 81 49 3952
185 277 95 62 78.5 46.5 3998.5186 278 96 65 80.5 48.5 4047187 279 89 60 74.5 42.5 4089.5188 280 87 63 75 43 4132.5189 281 88 60 74 42 4174.5190 282 86 60 73 41 4215.5191 283 92 59 75.5 43.5 4259192 284 96 63 79.5 47.5 4306.5193 285 96 64 80 48 4354.5194 286 99 66 82.5 50.5 4405195 287 98 66 82 50 4455196 288 100 76 88 56 4511197 289 97 70 83.5 51.5 4562.5
198 290 96 63 79.5 47.5 4610199 291 100 65 82.5 50.5 4660.5200 292 102 63 82.5 50.5 4711201 293 102 64 83 51 4762
202 294 93 67 80 48 4810203 295 94 64 79 47 4857204 296 90 61 75.5 43.5 4900.5205 297 83 58 70.5 38.5 4939
206 298 83 59 71 39 4978207 299 85 61 73 41 5019208 300 87 62 74.5 42.5 5061.5209 301 85 61 73 41 5102.5
210 302 89 59 74 42 5144.5211 303 90 63 76.5 44.5 5189212 304 91 62 76.5 44.5 5233.5213 305 88 61 74.5 42.5 5276214 306 91 58 74.5 42.5 5318.5215 307 90 62 76 44 5362.5216 308 88 49 68.5 36.5 5399217 309 89 57 73 41 5440218 310 94 59 76.5 44.5 5484.5219 311 96 62 79 47 5531.5220 312 96 64 80 48 5579.5221 313 92 62 77 45 5624.5222 314 83 65 74 42 5666.5
223 315 90 62 76 44 5710.5224 316 90 60 75 43 5753.5225 317 88 59 73.5 41.5 5795226 318 92 59 75.5 43.5 5838.5
227 319 92 61 76.5 44.5 5883228 320 92 61 76.5 44.5 5927.5229 321 92 63 77.5 45.5 5973230 322 83 60 71.5 39.5 6012.5
231 323 90 58 74 42 6054.5232 324 93 63 78 46 6100.5233 325 81 58 69.5 37.5 6138234 326 90 60 75 43 6181
235 327 96 63 79.5 47.5 6228.5236 328 92 64 78 46 6274.5237 329 87 64 75.5 43.5 6318238 330 91 62 76.5 44.5 6362.5239 331 92 63 77.5 45.5 6408240 332 94 62 78 46 6454241 333 93 61 77 45 6499242 334 95 63 79 47 6546243 335 85 62 73.5 41.5 6587.5244 336 82 54 68 36 6623.5245 337 88 56 72 40 6663.5246 338 91 61 76 44 6707.5247 339 89 64 76.5 44.5 6752
248 340 85 65 75 43 6795249 341 89 60 74.5 42.5 6837.5250 342 89 60 74.5 42.5 6880251 343 91 60 75.5 43.5 6923.5
252 344 87 62 74.5 42.5 6966253 345 82 56 69 37 7003254 346 78 55 66.5 34.5 7037.5255 347 77 55 66 34 7071.5
256 348 83 52 67.5 35.5 7107257 349 83 54 68.5 36.5 7143.5258 350 87 57 72 40 7183.5259 351 89 54 71.5 39.5 7223
260 352 87 57 72 40 7263261 353 88 59 73.5 41.5 7304.5262 354 85 56 70.5 38.5 7343263 355 82 54 68 36 7379264 356 79 50 64.5 32.5 7411.5265 357 78 50 64 32 7443.5266 358 80 55 67.5 35.5 7479267 359 83 50 66.5 34.5 7513.5 85 917.5 length of freeze (day) 5
268 360 78 48 63 31 7544.5 90 887 frost depth (oF-day)30.5269 361 75 46 60.5 28.5 7573 average temperature 53.2270 362 81 48 64.5 32.5 7605.5271 363 83 52 67.5 35.5 7641272 364 83 59 71 39 7680273 365 80 51 65.5 33.5 7713.5
1998-1999 day of frost year degree cumulative
day of year (consecutive date) max. temp. min. temp avg. temp day (
oF) degree day (
oF)
274 1 74 48 61 29 29275 2 76 43 59.5 27.5 56.5276 3 77 46 61.5 29.5 86277 4 60 46 53 21 107278 5 60 34 47 15 122279 6 70 32 51 19 141
0
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0 50 100 150 200
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day of frost year
Blanding, UT
1997-1998
280 7 73 40 56.5 24.5 165.5
281 8 75 44 59.5 27.5 193282 9 76 44 60 28 221283 10 74 44 59 27 248284 11 74 43 58.5 26.5 274.5
285 12 78 46 62 30 304.5286 13 79 46 62.5 30.5 335287 14 77 48 62.5 30.5 365.5288 15 69 42 55.5 23.5 389
289 16 44 32 38 6 395290 17 59 32 45.5 13.5 408.5291 18 62 35 48.5 16.5 425292 19 70 40 55 23 448293 20 69 48 58.5 26.5 474.5294 21 51 44 47.5 15.5 490295 22 55 44 49.5 17.5 507.5296 23 65 45 55 23 530.5297 24 63 40 51.5 19.5 550298 25 55 43 49 17 567299 26 52 42 47 15 582300 27 54 40 47 15 597301 28 55 35 45 13 610
302 29 56 36 46 14 624303 30 56 39 47.5 15.5 639.5304 31 58 37 47.5 15.5 655305 32 58 36 47 15 670
306 33 54 39 46.5 14.5 684.5307 34 54 33 43.5 11.5 696308 35 46 31 38.5 6.5 702.5309 36 51 30 40.5 8.5 711
310 37 53 29 41 9 720311 38 48 27 37.5 5.5 725.5312 39 47 34 40.5 8.5 734313 40 36 25 30.5 -1.5 732.5
314 41 37 18 27.5 -4.5 728315 42 37 26 31.5 -0.5 727.5316 43 52 29 40.5 8.5 736317 44 54 29 41.5 9.5 745.5318 45 59 33 46 14 759.5319 46 59 33 46 14 773.5320 47 61 35 48 16 789.5321 48 59 37 48 16 805.5322 49 54 29 41.5 9.5 815323 50 50 26 38 6 821324 51 48 23 35.5 3.5 824.5325 52 50 25 37.5 5.5 830326 53 58 29 43.5 11.5 841.5
327 54 61 34 47.5 15.5 857328 55 59 35 47 15 872329 56 58 34 46 14 886330 57 58 35 46.5 14.5 900.5
331 58 63 37 50 18 918.5332 59 52 37 44.5 12.5 931333 60 48 33 40.5 8.5 939.5334 61 51 31 41 9 948.5
335 62 58 36 47 15 963.5336 63 60 35 47.5 15.5 979337 64 60 34 47 15 994338 65 52 32 42 10 1004
339 66 43 22 32.5 0.5 1004.5340 67 29 17 23 -9 995.5341 68 37 17 27 -5 990.5342 69 37 14 25.5 -6.5 984343 70 33 22 27.5 -4.5 979.5344 71 44 21 32.5 0.5 980345 72 45 17 31 -1 979346 73 48 21 34.5 2.5 981.5347 74 50 24 37 5 986.5348 75 55 27 41 9 995.5349 76 58 29 43.5 11.5 1007350 77 63 29 46 14 1021351 78 55 29 42 10 1031
352 79 50 27 38.5 6.5 1037.5353 80 54 29 41.5 9.5 1047354 81 46 29 37.5 5.5 1052.5355 82 29 8 18.5 -13.5 1039
356 83 34 8 21 -11 1028357 84 36 10 23 -9 1019358 85 34 8 21 -11 1008359 86 41 11 26 -6 1002
360 87 43 20 31.5 -0.5 1001.5361 88 45 23 34 2 1003.5362 89 47 24 35.5 3.5 1007363 90 58 30 44 12 1019
364 91 54 31 42.5 10.5 1029.5365 92 50 31 40.5 8.5 10381 93 49 28 38.5 6.5 1044.52 94 49 24 36.5 4.5 10493 95 42 19 30.5 -1.5 1047.54 96 45 17 31 -1 1046.55 97 51 21 36 4 1050.56 98 55 28 41.5 9.5 10607 99 49 30 39.5 7.5 1067.58 100 48 24 36 4 1071.59 101 49 22 35.5 3.5 107510 102 54 26 40 8 108311 103 53 28 40.5 8.5 1091.5
12 104 50 29 39.5 7.5 109913 105 51 26 38.5 6.5 1105.514 106 50 26 38 6 1111.515 107 43 24 33.5 1.5 1113
16 108 45 27 36 4 111717 109 52 26 39 7 112418 110 54 33 43.5 11.5 1135.519 111 57 31 44 12 1147.5
20 112 41 34 37.5 5.5 115321 113 38 29 33.5 1.5 1154.522 114 46 22 34 2 1156.523 115 48 23 35.5 3.5 1160
24 116 52 33 42.5 10.5 1170.5
25 117 51 39 45 13 1183.526 118 42 28 35 3 1186.527 119 43 22 32.5 0.5 118728 120 43 21 32 0 1187
29 121 52 22 37 5 119230 122 47 21 34 2 119431 123 51 25 38 6 120032 124 48 25 36.5 4.5 1204.5
33 125 47 20 33.5 1.5 120634 126 58 26 42 10 121635 127 51 31 41 9 122536 128 45 32 38.5 6.5 1231.537 129 41 29 35 3 1234.538 130 49 31 40 8 1242.539 131 50 30 40 8 1250.540 132 62 32 47 15 1265.541 133 48 19 33.5 1.5 126742 134 34 13 23.5 -8.5 1258.543 135 47 15 31 -1 1257.544 136 60 23 41.5 9.5 126745 137 53 30 41.5 9.5 1276.5
46 138 53 28 40.5 8.5 128547 139 52 27 39.5 7.5 1292.548 140 56 28 42 10 1302.549 141 55 28 41.5 9.5 1312
50 142 56 27 41.5 9.5 1321.551 143 52 23 37.5 5.5 132752 144 56 30 43 11 133853 145 46 24 35 3 1341
54 146 53 23 38 6 134755 147 59 29 44 12 135956 148 61 32 46.5 14.5 1373.557 149 60 35 47.5 15.5 1389
58 150 57 32 44.5 12.5 1401.559 151 64 30 47 15 1416.560 152 67 32 49.5 17.5 143461 153 63 33 48 16 145062 154 64 33 48.5 16.5 1466.563 155 63 35 49 17 1483.564 156 54 28 41 9 1492.565 157 59 33 46 14 1506.566 158 57 34 45.5 13.5 152067 159 52 24 38 6 152668 160 57 28 42.5 10.5 1536.569 161 55 27 41 9 1545.570 162 58 33 45.5 13.5 1559
71 163 50 30 40 8 156772 164 63 26 44.5 12.5 1579.573 165 62 32 47 15 1594.574 166 65 34 49.5 17.5 1612
75 167 66 36 51 19 163176 168 65 36 50.5 18.5 1649.577 169 65 31 48 16 1665.578 170 65 31 48 16 1681.5
79 171 70 37 53.5 21.5 170380 172 69 39 54 22 172581 173 65 33 49 17 174282 174 60 33 46.5 14.5 1756.5
83 175 67 32 49.5 17.5 177484 176 68 40 54 22 179685 177 68 40 54 22 181886 178 67 39 53 21 183987 179 66 32 49 17 185688 180 69 36 52.5 20.5 1876.589 181 70 39 54.5 22.5 189990 182 61 36 48.5 16.5 1915.591 183 37 27 32 0 1915.592 184 36 25 30.5 -1.5 191493 185 44 20 32 0 191494 186 41 27 34 2 191695 187 49 27 38 6 1922
96 188 62 29 45.5 13.5 1935.597 189 67 32 49.5 17.5 195398 190 52 28 40 8 196199 191 42 25 33.5 1.5 1962.5
100 192 50 18 34 2 1964.5101 193 62 27 44.5 12.5 1977102 194 69 40 54.5 22.5 1999.5103 195 70 45 57.5 25.5 2025
104 196 61 41 51 19 2044105 197 52 31 41.5 9.5 2053.5106 198 57 24 40.5 8.5 2062107 199 68 31 49.5 17.5 2079.5
108 200 76 39 57.5 25.5 2105109 201 77 42 59.5 27.5 2132.5110 202 74 46 60 28 2160.5111 203 63 40 51.5 19.5 2180112 204 43 35 39 7 2187113 205 60 34 47 15 2202114 206 43 38 40.5 8.5 2210.5115 207 53 33 43 11 2221.5116 208 68 35 51.5 19.5 2241117 209 73 43 58 26 2267118 210 62 49 55.5 23.5 2290.5119 211 58 39 48.5 16.5 2307120 212 58 34 46 14 2321
121 213 67 38 52.5 20.5 2341.5122 214 65 33 49 17 2358.5123 215 54 35 44.5 12.5 2371124 216 53 32 42.5 10.5 2381.5
125 217 55 32 43.5 11.5 2393126 218 63 33 48 16 2409127 219 75 37 56 24 2433128 220 77 47 62 30 2463
129 221 73 47 60 28 2491130 222 61 39 50 18 2509131 223 63 39 51 19 2528132 224 73 37 55 23 2551
133 225 81 46 63.5 31.5 2582.5
134 226 72 47 59.5 27.5 2610135 227 74 43 58.5 26.5 2636.5136 228 68 40 54 22 2658.5137 229 72 35 53.5 21.5 2680
138 230 80 44 62 30 2710139 231 80 49 64.5 32.5 2742.5140 232 79 47 63 31 2773.5141 233 81 50 65.5 33.5 2807
142 234 86 52 69 37 2844143 235 83 55 69 37 2881144 236 77 48 62.5 30.5 2911.5145 237 72 46 59 27 2938.5146 238 77 44 60.5 28.5 2967147 239 77 51 64 32 2999148 240 79 49 64 32 3031149 241 79 50 64.5 32.5 3063.5150 242 80 49 64.5 32.5 3096151 243 79 48 63.5 31.5 3127.5152 244 78 46 62 30 3157.5153 245 66 52 59 27 3184.5154 246 75 44 59.5 27.5 3212
155 247 68 40 54 22 3234156 248 51 36 43.5 11.5 3245.5157 249 73 38 55.5 23.5 3269158 250 82 49 65.5 33.5 3302.5
159 251 82 48 65 33 3335.5160 252 80 49 64.5 32.5 3368161 253 80 49 64.5 32.5 3400.5162 254 81 54 67.5 35.5 3436
163 255 85 53 69 37 3473164 256 86 51 68.5 36.5 3509.5165 257 84 56 70 38 3547.5166 258 88 53 70.5 38.5 3586
167 259 91 56 73.5 41.5 3627.5168 260 77 55 66 34 3661.5169 261 85 52 68.5 36.5 3698170 262 89 56 72.5 40.5 3738.5171 263 91 57 74 42 3780.5172 264 89 57 73 41 3821.5173 265 90 54 72 40 3861.5174 266 92 56 74 42 3903.5175 267 93 56 74.5 42.5 3946176 268 92 61 76.5 44.5 3990.5177 269 93 59 76 44 4034.5178 270 92 57 74.5 42.5 4077179 271 95 56 75.5 43.5 4120.5
180 272 94 61 77.5 45.5 4166181 273 95 59 77 45 4211182 274 101 61 81 49 4260183 275 100 65 82.5 50.5 4310.5
184 276 93 60 76.5 44.5 4355185 277 94 60 77 45 4400186 278 99 61 80 48 4448187 279 94 64 79 47 4495
188 280 91 66 78.5 46.5 4541.5189 281 79 62 70.5 38.5 4580190 282 88 60 74 42 4622191 283 88 59 73.5 41.5 4663.5
192 284 88 64 76 44 4707.5193 285 90 59 74.5 42.5 4750194 286 91 64 77.5 45.5 4795.5195 287 80 59 69.5 37.5 4833196 288 82 56 69 37 4870197 289 89 56 72.5 40.5 4910.5198 290 91 59 75 43 4953.5199 291 84 59 71.5 39.5 4993200 292 76 57 66.5 34.5 5027.5201 293 91 57 74 42 5069.5202 294 91 60 75.5 43.5 5113203 295 89 58 73.5 41.5 5154.5204 296 92 60 76 44 5198.5
205 297 91 60 75.5 43.5 5242206 298 89 61 75 43 5285207 299 91 62 76.5 44.5 5329.5208 300 89 60 74.5 42.5 5372
209 301 88 60 74 42 5414210 302 88 61 74.5 42.5 5456.5211 303 82 58 70 38 5494.5212 304 86 55 70.5 38.5 5533
213 305 89 59 74 42 5575214 306 90 58 74 42 5617215 307 74 58 66 34 5651216 308 80 55 67.5 35.5 5686.5
217 309 73 58 65.5 33.5 5720218 310 80 52 66 34 5754219 311 87 57 72 40 5794220 312 92 62 77 45 5839221 313 90 61 75.5 43.5 5882.5222 314 73 60 66.5 34.5 5917223 315 84 58 71 39 5956224 316 86 51 68.5 36.5 5992.5225 317 87 54 70.5 38.5 6031226 318 84 60 72 40 6071227 319 82 55 68.5 36.5 6107.5228 320 86 55 70.5 38.5 6146229 321 89 56 72.5 40.5 6186.5
230 322 90 59 74.5 42.5 6229231 323 88 59 73.5 41.5 6270.5232 324 87 61 74 42 6312.5233 325 80 57 68.5 36.5 6349
234 326 83 57 70 38 6387235 327 91 58 74.5 42.5 6429.5236 328 90 68 79 47 6476.5237 329 87 61 74 42 6518.5
238 330 89 61 75 43 6561.5239 331 87 63 75 43 6604.5240 332 88 57 72.5 40.5 6645241 333 87 58 72.5 40.5 6685.5
242 334 90 62 76 44 6729.5
243 335 82 56 69 37 6766.5244 336 65 56 60.5 28.5 6795245 337 77 55 66 34 6829246 338 78 54 66 34 6863
247 339 80 49 64.5 32.5 6895.5248 340 84 54 69 37 6932.5249 341 87 55 71 39 6971.5250 342 89 55 72 40 7011.5
251 343 88 57 72.5 40.5 7052252 344 85 54 69.5 37.5 7089.5253 345 86 53 69.5 37.5 7127254 346 76 55 65.5 33.5 7160.5255 347 82 50 66 34 7194.5256 348 83 52 67.5 35.5 7230257 349 74 56 65 33 7263258 350 68 50 59 27 7290259 351 76 49 62.5 30.5 7320.5260 352 78 47 62.5 30.5 7351261 353 79 50 64.5 32.5 7383.5262 354 76 50 63 31 7414.5263 355 77 47 62 30 7444.5
264 356 78 47 62.5 30.5 7475265 357 77 44 60.5 28.5 7503.5266 358 62 52 57 25 7528.5267 359 76 52 64 32 7560.5
268 360 83 50 66.5 34.5 7595269 361 87 52 69.5 37.5 7632.5 81 1052.5 length of freeze (day) 5
270 362 73 50 61.5 29.5 7662 86 1002 frost depth (oF-day)50.5271 363 61 36 48.5 16.5 7678.5 average temperature 53.2272 364 69 36 52.5 20.5 7699
273 365 75 42 58.5 26.5 7725.5
1999-2000 day of frost year degree cumulativeday of year (consecutive date) max. temp. min. temp avg. temp day (
oF) degree day (oF)
274 1 81 44 62.5 30.5 30.5275 2 80 46 63 31 61.5276 3 81 47 64 32 93.5277 4 78 46 62 30 123.5
278 5 80 45 62.5 30.5 154279 6 79 47 63 31 185280 7 63 46 54.5 22.5 207.5281 8 77 44 60.5 28.5 236
282 9 78 46 62 30 266283 10 79 45 62 30 296284 11 80 47 63.5 31.5 327.5285 12 80 46 63 31 358.5
286 13 79 50 64.5 32.5 391287 14 78 44 61 29 420288 15 77 46 61.5 29.5 449.5289 16 53 37 45 13 462.5
290 17 59 28 43.5 11.5 474291 18 65 32 48.5 16.5 490.5292 19 66 39 52.5 20.5 511293 20 68 36 52 20 531294 21 72 40 56 24 555295 22 70 40 55 23 578296 23 71 39 55 23 601297 24 69 40 54.5 22.5 623.5298 25 72 41 56.5 24.5 648299 26 71 40 55.5 23.5 671.5300 27 73 40 56.5 24.5 696301 28 65 39 52 20 716302 29 55 36 45.5 13.5 729.5
303 30 66 29 47.5 15.5 745304 31 65 35 50 18 763305 32 72 38 55 23 786306 33 62 37 49.5 17.5 803.5
307 34 66 35 50.5 18.5 822308 35 67 38 52.5 20.5 842.5309 36 68 38 53 21 863.5310 37 74 40 57 25 888.5
311 38 71 44 57.5 25.5 914312 39 68 42 55 23 937313 40 63 35 49 17 954314 41 64 37 50.5 18.5 972.5
315 42 69 39 54 22 994.5316 43 67 36 51.5 19.5 1014317 44 69 37 53 21 1035318 45 66 37 51.5 19.5 1054.5319 46 68 38 53 21 1075.5320 47 69 41 55 23 1098.5321 48 66 40 53 21 1119.5322 49 56 30 43 11 1130.5323 50 53 35 44 12 1142.5324 51 57 31 44 12 1154.5325 52 43 30 36.5 4.5 1159326 53 41 23 32 0 1159327 54 41 17 29 -3 1156
328 55 44 17 30.5 -1.5 1154.5329 56 48 19 33.5 1.5 1156330 57 53 28 40.5 8.5 1164.5331 58 51 33 42 10 1174.5
332 59 60 33 46.5 14.5 1189333 60 63 36 49.5 17.5 1206.5334 61 60 34 47 15 1221.5335 62 61 37 49 17 1238.5
336 63 50 31 40.5 8.5 1247337 64 36 28 32 0 1247338 65 46 20 33 1 1248339 66 41 17 29 -3 1245
340 67 43 19 31 -1 1244341 68 44 25 34.5 2.5 1246.5342 69 40 24 32 0 1246.5343 70 35 18 26.5 -5.5 1241344 71 39 26 32.5 0.5 1241.5345 72 41 17 29 -3 1238.5
0
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1000
1200
0 20406080100120
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day of frost year
Blanding, UT
1998-1999
346 73 48 18 33 1 1239.5
347 74 43 23 33 1 1240.5348 75 36 16 26 -6 1234.5349 76 37 12 24.5 -7.5 1227350 77 44 18 31 -1 1226
351 78 52 23 37.5 5.5 1231.5352 79 43 25 34 2 1233.5353 80 43 23 33 1 1234.5354 81 43 21 32 0 1234.5
355 82 36 21 28.5 -3.5 1231356 83 42 18 30 -2 1229357 84 43 20 31.5 -0.5 1228.5358 85 53 19 36 4 1232.5359 86 50 22 36 4 1236.5360 87 50 29 39.5 7.5 1244361 88 47 26 36.5 4.5 1248.5362 89 46 24 35 3 1251.5363 90 48 24 36 4 1255.5364 91 49 23 36 4 1259.5365 92 47 22 34.5 2.5 12621 93 33 25 29 -3 12592 94 32 22 27 -5 1254
3 95 27 10 18.5 -13.5 1240.54 96 28 9 18.5 -13.5 12275 97 37 12 24.5 -7.5 1219.56 98 34 14 24 -8 1211.5
7 99 32 12 22 -10 1201.58 100 32 13 22.5 -9.5 11929 101 41 17 29 -3 118910 102 43 21 32 0 1189
11 103 49 28 38.5 6.5 1195.512 104 49 29 39 7 1202.513 105 50 30 40 8 1210.514 106 52 32 42 10 1220.5
15 107 55 32 43.5 11.5 123216 108 54 37 45.5 13.5 1245.517 109 49 43 46 14 1259.518 110 58 41 49.5 17.5 127719 111 61 37 49 17 129420 112 54 37 45.5 13.5 1307.521 113 55 34 44.5 12.5 132022 114 53 30 41.5 9.5 1329.523 115 51 27 39 7 1336.524 116 45 32 38.5 6.5 134325 117 45 36 40.5 8.5 1351.526 118 40 33 36.5 4.5 135627 119 41 25 33 1 1357
28 120 39 23 31 -1 135629 121 39 17 28 -4 135230 122 41 19 30 -2 135031 123 34 25 29.5 -2.5 1347.5
32 124 47 20 33.5 1.5 134933 125 45 23 34 2 135134 126 52 27 39.5 7.5 1358.535 127 47 32 39.5 7.5 1366
36 128 50 31 40.5 8.5 1374.537 129 55 33 44 12 1386.538 130 57 30 43.5 11.5 139839 131 55 31 43 11 1409
40 132 53 37 45 13 142241 133 50 35 42.5 10.5 1432.542 134 52 33 42.5 10.5 144343 135 41 33 37 5 144844 136 34 27 30.5 -1.5 1446.545 137 47 33 40 8 1454.546 138 57 33 45 13 1467.547 139 51 32 41.5 9.5 147748 140 37 31 34 2 147949 141 46 25 35.5 3.5 1482.550 142 50 27 38.5 6.5 148951 143 52 34 43 11 150052 144 58 38 48 16 1516
53 145 49 29 39 7 152354 146 48 28 38 6 152955 147 46 27 36.5 4.5 1533.556 148 40 20 30 -2 1531.5
57 149 45 18 31.5 -0.5 153158 150 59 28 43.5 11.5 1542.559 151 53 31 42 10 1552.560 152 49 25 37 5 1557.5
61 153 41 32 36.5 4.5 156262 154 55 28 41.5 9.5 1571.563 155 58 30 44 12 1583.564 156 65 35 50 18 1601.5
65 157 48 32 40 8 1609.566 158 40 31 35.5 3.5 161367 159 41 29 35 3 161668 160 40 27 33.5 1.5 1617.569 161 43 27 35 3 1620.570 162 46 24 35 3 1623.571 163 55 23 39 7 1630.572 164 57 33 45 13 1643.573 165 60 32 46 14 1657.574 166 65 33 49 17 1674.575 167 59 32 45.5 13.5 168876 168 56 24 40 8 169677 169 53 31 42 10 1706
78 170 49 29 39 7 171379 171 56 26 41 9 172280 172 46 29 37.5 5.5 1727.581 173 45 29 37 5 1732.5
82 174 49 29 39 7 1739.583 175 51 31 41 9 1748.584 176 60 34 47 15 1763.585 177 64 41 52.5 20.5 1784
86 178 68 39 53.5 21.5 1805.587 179 68 39 53.5 21.5 182788 180 45 37 41 9 183689 181 55 32 43.5 11.5 1847.5
90 182 50 34 42 10 1857.5
91 183 42 33 37.5 5.5 186392 184 52 32 42 10 187393 185 59 29 44 12 188594 186 62 35 48.5 16.5 1901.5
95 187 71 38 54.5 22.5 192496 188 74 42 58 26 195097 189 74 45 59.5 27.5 1977.598 190 70 41 55.5 23.5 2001
99 191 69 41 55 23 2024100 192 74 43 58.5 26.5 2050.5101 193 69 40 54.5 22.5 2073102 194 66 41 53.5 21.5 2094.5103 195 70 36 53 21 2115.5104 196 73 43 58 26 2141.5105 197 67 43 55 23 2164.5106 198 63 36 49.5 17.5 2182107 199 67 39 53 21 2203108 200 75 41 58 26 2229109 201 57 37 47 15 2244110 202 61 30 45.5 13.5 2257.5111 203 69 40 54.5 22.5 2280
112 204 72 48 60 28 2308113 205 61 42 51.5 19.5 2327.5114 206 72 44 58 26 2353.5115 207 69 44 56.5 24.5 2378
116 208 75 40 57.5 25.5 2403.5117 209 81 41 61 29 2432.5118 210 84 51 67.5 35.5 2468119 211 81 53 67 35 2503
120 212 73 50 61.5 29.5 2532.5121 213 69 42 55.5 23.5 2556122 214 78 41 59.5 27.5 2583.5123 215 83 46 64.5 32.5 2616
124 216 85 50 67.5 35.5 2651.5125 217 85 53 69 37 2688.5126 218 84 50 67 35 2723.5127 219 81 47 64 32 2755.5128 220 78 51 64.5 32.5 2788129 221 69 48 58.5 26.5 2814.5130 222 76 41 58.5 26.5 2841131 223 85 49 67 35 2876132 224 70 43 56.5 24.5 2900.5133 225 60 32 46 14 2914.5134 226 67 46 56.5 24.5 2939135 227 77 43 60 28 2967136 228 81 50 65.5 33.5 3000.5
137 229 78 51 64.5 32.5 3033138 230 65 41 53 21 3054139 231 66 40 53 21 3075140 232 76 40 58 26 3101
141 233 79 49 64 32 3133142 234 84 52 68 36 3169143 235 89 52 70.5 38.5 3207.5144 236 94 58 76 44 3251.5
145 237 92 65 78.5 46.5 3298146 238 82 55 68.5 36.5 3334.5147 239 79 50 64.5 32.5 3367148 240 85 49 67 35 3402
149 241 94 57 75.5 43.5 3445.5150 242 97 62 79.5 47.5 3493151 243 95 59 77 45 3538152 244 91 56 73.5 41.5 3579.5153 245 90 56 73 41 3620.5154 246 89 47 68 36 3656.5155 247 90 56 73 41 3697.5156 248 93 58 75.5 43.5 3741157 249 93 60 76.5 44.5 3785.5158 250 92 59 75.5 43.5 3829159 251 93 58 75.5 43.5 3872.5160 252 88 60 74 42 3914.5161 253 80 57 68.5 36.5 3951
162 254 82 50 66 34 3985163 255 84 52 68 36 4021164 256 88 52 70 38 4059165 257 84 56 70 38 4097
166 258 89 52 70.5 38.5 4135.5167 259 94 59 76.5 44.5 4180168 260 89 58 73.5 41.5 4221.5169 261 84 49 66.5 34.5 4256
170 262 86 58 72 40 4296171 263 86 53 69.5 37.5 4333.5172 264 85 57 71 39 4372.5173 265 91 51 71 39 4411.5
174 266 89 58 73.5 41.5 4453175 267 87 60 73.5 41.5 4494.5176 268 84 57 70.5 38.5 4533177 269 90 57 73.5 41.5 4574.5178 270 85 57 71 39 4613.5179 271 90 57 73.5 41.5 4655180 272 86 60 73 41 4696181 273 85 61 73 41 4737182 274 90 59 74.5 42.5 4779.5183 275 92 58 75 43 4822.5184 276 92 59 75.5 43.5 4866185 277 90 57 73.5 41.5 4907.5186 278 89 55 72 40 4947.5
187 279 89 57 73 41 4988.5188 280 91 56 73.5 41.5 5030189 281 90 60 75 43 5073190 282 88 60 74 42 5115
191 283 89 56 72.5 40.5 5155.5192 284 89 57 73 41 5196.5193 285 94 61 77.5 45.5 5242194 286 95 67 81 49 5291
195 287 92 64 78 46 5337196 288 94 62 78 46 5383197 289 90 55 72.5 40.5 5423.5198 290 89 59 74 42 5465.5
199 291 93 63 78 46 5511.5
200 292 95 62 78.5 46.5 5558201 293 97 61 79 47 5605202 294 98 62 80 48 5653203 295 100 62 81 49 5702
204 296 100 58 79 47 5749205 297 98 58 78 46 5795206 298 96 64 80 48 5843207 299 91 63 77 45 5888
208 300 95 59 77 45 5933209 301 93 60 76.5 44.5 5977.5210 302 100 63 81.5 49.5 6027211 303 94 67 80.5 48.5 6075.5212 304 93 62 77.5 45.5 6121213 305 93 59 76 44 6165214 306 98 63 80.5 48.5 6213.5215 307 98 66 82 50 6263.5216 308 99 71 85 53 6316.5217 309 97 69 83 51 6367.5218 310 97 61 79 47 6414.5219 311 94 66 80 48 6462.5220 312 94 61 77.5 45.5 6508
221 313 98 63 80.5 48.5 6556.5222 314 97 68 82.5 50.5 6607223 315 94 67 80.5 48.5 6655.5224 316 94 63 78.5 46.5 6702
225 317 91 63 77 45 6747226 318 91 59 75 43 6790227 319 91 64 77.5 45.5 6835.5228 320 95 65 80 48 6883.5
229 321 95 56 75.5 43.5 6927230 322 93 62 77.5 45.5 6972.5231 323 87 60 73.5 41.5 7014232 324 89 63 76 44 7058
233 325 87 59 73 41 7099234 326 80 62 71 39 7138235 327 89 59 74 42 7180236 328 90 63 76.5 44.5 7224.5237 329 91 66 78.5 46.5 7271238 330 91 62 76.5 44.5 7315.5239 331 89 63 76 44 7359.5240 332 89 61 75 43 7402.5241 333 86 57 71.5 39.5 7442242 334 84 61 72.5 40.5 7482.5243 335 79 58 68.5 36.5 7519244 336 78 57 67.5 35.5 7554.5245 337 72 55 63.5 31.5 7586
246 338 82 51 66.5 34.5 7620.5247 339 83 53 68 36 7656.5248 340 89 54 71.5 39.5 7696249 341 86 63 74.5 42.5 7738.5
250 342 76 56 66 34 7772.5251 343 83 50 66.5 34.5 7807252 344 70 59 64.5 32.5 7839.5253 345 82 49 65.5 33.5 7873
254 346 85 53 69 37 7910255 347 86 54 70 38 7948256 348 89 56 72.5 40.5 7988.5257 349 92 58 75 43 8031.5
258 350 91 60 75.5 43.5 8075259 351 92 61 76.5 44.5 8119.5260 352 93 61 77 45 8164.5261 353 90 57 73.5 41.5 8206262 354 78 53 65.5 33.5 8239.5263 355 87 50 68.5 36.5 8276264 356 84 50 67 35 8311265 357 86 50 68 36 8347266 358 83 58 70.5 38.5 8385.5267 359 70 47 58.5 26.5 8412268 360 63 32 47.5 15.5 8427.5269 361 69 35 52 20 8447.5 94 1254 length of freeze (day) 8
270 362 78 44 61 29 8476.5 102 1189 frost depth (oF-day)65271 363 80 52 66 34 8510.5 average temperature 55.5272 364 82 53 67.5 35.5 8546273 365 80 53 66.5 34.5 8580.5274 366 83 51 67 35 8615.5
2000-2001 day of frost year degree cumulative
day of year (consecutive date) max. temp. min. temp avg. temp day (
oF) degree day (
oF)274 1 85 49 67 35 35275 2 85 53 69 37 72276 3 83 55 69 37 109277 4 70 48 59 27 136278 5 73 45 59 27 163279 6 81 47 64 32 195280 7 76 51 63.5 31.5 226.5281 8 59 46 52.5 20.5 247282 9 60 41 50.5 18.5 265.5283 10 59 41 50 18 283.5
284 11 63 46 54.5 22.5 306285 12 56 35 45.5 13.5 319.5286 13 60 37 48.5 16.5 336287 14 64 37 50.5 18.5 354.5
288 15 66 36 51 19 373.5289 16 69 40 54.5 22.5 396290 17 70 42 56 24 420291 18 72 43 57.5 25.5 445.5
292 19 71 45 58 26 471.5293 20 73 45 59 27 498.5294 21 63 43 53 21 519.5295 22 58 44 51 19 538.5
296 23 52 43 47.5 15.5 554297 24 50 40 45 13 567298 25 53 37 45 13 580299 26 58 38 48 16 596300 27 54 43 48.5 16.5 612.5301 28 51 36 43.5 11.5 624
0
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1500
2000
2500
0 50 100 150 200 250
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day of frost year
Blanding, UT
1999-2000
302 29 51 34 42.5 10.5 634.5
303 30 53 38 45.5 13.5 648304 31 41 32 36.5 4.5 652.5305 32 48 32 40 8 660.5306 33 48 28 38 6 666.5
307 34 49 35 42 10 676.5308 35 55 39 47 15 691.5309 36 47 31 39 7 698.5310 37 41 27 34 2 700.5
311 38 41 23 32 0 700.5312 39 41 21 31 -1 699.5313 40 45 25 35 3 702.5314 41 39 29 34 2 704.5315 42 38 27 32.5 0.5 705316 43 34 16 25 -7 698317 44 37 14 25.5 -6.5 691.5318 45 42 18 30 -2 689.5319 46 43 22 32.5 0.5 690320 47 35 18 26.5 -5.5 684.5321 48 36 14 25 -7 677.5322 49 40 15 27.5 -4.5 673323 50 43 19 31 -1 672
324 51 48 25 36.5 4.5 676.5325 52 51 27 39 7 683.5326 53 53 32 42.5 10.5 694327 54 49 31 40 8 702
328 55 48 28 38 6 708329 56 48 25 36.5 4.5 712.5330 57 43 26 34.5 2.5 715331 58 50 26 38 6 721
332 59 53 31 42 10 731333 60 50 31 40.5 8.5 739.5334 61 54 31 42.5 10.5 750335 62 50 27 38.5 6.5 756.5
336 63 46 31 38.5 6.5 763337 64 51 28 39.5 7.5 770.5338 65 50 29 39.5 7.5 778339 66 50 27 38.5 6.5 784.5340 67 56 28 42 10 794.5341 68 56 29 42.5 10.5 805342 69 47 34 40.5 8.5 813.5343 70 42 32 37 5 818.5344 71 41 32 36.5 4.5 823345 72 40 24 32 0 823346 73 37 30 33.5 1.5 824.5347 74 32 23 27.5 -4.5 820348 75 39 24 31.5 -0.5 819.5
349 76 46 25 35.5 3.5 823350 77 45 21 33 1 824351 78 44 23 33.5 1.5 825.5352 79 38 16 27 -5 820.5
353 80 38 14 26 -6 814.5354 81 46 19 32.5 0.5 815355 82 46 22 34 2 817356 83 45 23 34 2 819
357 84 46 27 36.5 4.5 823.5358 85 44 26 35 3 826.5359 86 40 26 33 1 827.5360 87 43 22 32.5 0.5 828
361 88 43 22 32.5 0.5 828.5362 89 51 20 35.5 3.5 832363 90 46 25 35.5 3.5 835.5364 91 46 25 35.5 3.5 839365 92 54 25 39.5 7.5 846.51 93 45 24 34.5 2.5 8492 94 50 24 37 5 8543 95 56 25 40.5 8.5 862.54 96 51 25 38 6 868.55 97 52 24 38 6 874.56 98 50 27 38.5 6.5 8817 99 55 28 41.5 9.5 890.58 100 47 24 35.5 3.5 894
9 101 39 29 34 2 89610 102 34 24 29 -3 89311 103 41 24 32.5 0.5 893.512 104 36 27 31.5 -0.5 893
13 105 36 18 27 -5 88814 106 34 14 24 -8 88015 107 37 18 27.5 -4.5 875.516 108 35 20 27.5 -4.5 871
17 109 35 16 25.5 -6.5 864.518 110 37 13 25 -7 857.519 111 39 17 28 -4 853.520 112 46 18 32 0 853.5
21 113 40 19 29.5 -2.5 85122 114 44 23 33.5 1.5 852.523 115 42 28 35 3 855.524 116 47 26 36.5 4.5 86025 117 40 28 34 2 86226 118 37 23 30 -2 86027 119 34 29 31.5 -0.5 859.528 120 29 25 27 -5 854.529 121 36 13 24.5 -7.5 84730 122 33 18 25.5 -6.5 840.531 123 35 10 22.5 -9.5 83132 124 44 10 27 -5 82633 125 36 17 26.5 -5.5 820.5
34 126 48 20 34 2 822.535 127 49 26 37.5 5.5 82836 128 40 23 31.5 -0.5 827.537 129 50 29 39.5 7.5 835
38 130 48 32 40 8 84339 131 38 26 32 0 84340 132 33 16 24.5 -7.5 835.541 133 42 19 30.5 -1.5 834
42 134 41 25 33 1 83543 135 48 25 36.5 4.5 839.544 136 48 31 39.5 7.5 84745 137 39 26 32.5 0.5 847.5
46 138 41 20 30.5 -1.5 846
47 139 43 24 33.5 1.5 847.548 140 50 27 38.5 6.5 85449 141 49 35 42 10 86450 142 53 32 42.5 10.5 874.5
51 143 53 33 43 11 885.552 144 54 33 43.5 11.5 89753 145 53 32 42.5 10.5 907.554 146 35 30 32.5 0.5 908
55 147 43 24 33.5 1.5 909.556 148 44 30 37 5 914.557 149 42 31 36.5 4.5 91958 150 47 32 39.5 7.5 926.559 151 42 30 36 4 930.560 152 43 29 36 4 934.561 153 45 26 35.5 3.5 93862 154 44 30 37 5 94363 155 50 28 39 7 95064 156 56 35 45.5 13.5 963.565 157 62 38 50 18 981.566 158 58 39 48.5 16.5 99867 159 59 33 46 14 1012
68 160 55 37 46 14 102669 161 48 32 40 8 103470 162 38 30 34 2 103671 163 48 28 38 6 1042
72 164 55 30 42.5 10.5 1052.573 165 55 29 42 10 1062.574 166 48 24 36 4 1066.575 167 50 30 40 8 1074.5
76 168 50 26 38 6 1080.577 169 55 28 41.5 9.5 109078 170 62 32 47 15 110579 171 67 37 52 20 1125
80 172 68 38 53 21 114681 173 70 43 56.5 24.5 1170.582 174 63 43 53 21 1191.583 175 66 39 52.5 20.5 121284 176 67 46 56.5 24.5 1236.585 177 65 40 52.5 20.5 125786 178 60 35 47.5 15.5 1272.587 179 60 32 46 14 1286.588 180 58 37 47.5 15.5 130289 181 60 35 47.5 15.5 1317.590 182 66 36 51 19 1336.591 183 71 39 55 23 1359.592 184 69 41 55 23 1382.5
93 185 65 40 52.5 20.5 140394 186 64 39 51.5 19.5 1422.595 187 59 40 49.5 17.5 144096 188 50 34 42 10 1450
97 189 50 32 41 9 145998 190 49 32 40.5 8.5 1467.599 191 57 29 43 11 1478.5100 192 49 31 40 8 1486.5
101 193 50 23 36.5 4.5 1491102 194 49 32 40.5 8.5 1499.5103 195 55 28 41.5 9.5 1509104 196 63 36 49.5 17.5 1526.5
105 197 68 37 52.5 20.5 1547106 198 72 41 56.5 24.5 1571.5107 199 76 45 60.5 28.5 1600108 200 76 46 61 29 1629109 201 77 48 62.5 30.5 1659.5110 202 69 45 57 25 1684.5111 203 56 41 48.5 16.5 1701112 204 53 33 43 11 1712113 205 62 29 45.5 13.5 1725.5114 206 68 38 53 21 1746.5115 207 75 44 59.5 27.5 1774116 208 79 47 63 31 1805117 209 78 49 63.5 31.5 1836.5
118 210 75 45 60 28 1864.5119 211 76 44 60 28 1892.5120 212 80 47 63.5 31.5 1924121 213 83 46 64.5 32.5 1956.5
122 214 71 33 52 20 1976.5123 215 51 33 42 10 1986.5124 216 55 31 43 11 1997.5125 217 65 34 49.5 17.5 2015
126 218 71 41 56 24 2039127 219 74 43 58.5 26.5 2065.5128 220 81 46 63.5 31.5 2097129 221 85 48 66.5 34.5 2131.5
130 222 83 49 66 34 2165.5131 223 83 52 67.5 35.5 2201132 224 83 49 66 34 2235133 225 78 49 63.5 31.5 2266.5134 226 75 47 61 29 2295.5135 227 83 47 65 33 2328.5136 228 84 53 68.5 36.5 2365137 229 79 55 67 35 2400138 230 83 45 64 32 2432139 231 70 49 59.5 27.5 2459.5140 232 80 44 62 30 2489.5141 233 68 40 54 22 2511.5142 234 81 41 61 29 2540.5
143 235 88 52 70 38 2578.5144 236 87 58 72.5 40.5 2619145 237 90 55 72.5 40.5 2659.5146 238 91 52 71.5 39.5 2699
147 239 88 57 72.5 40.5 2739.5148 240 84 52 68 36 2775.5149 241 84 49 66.5 34.5 2810150 242 85 56 70.5 38.5 2848.5
151 243 85 54 69.5 37.5 2886152 244 91 56 73.5 41.5 2927.5153 245 89 57 73 41 2968.5154 246 84 52 68 36 3004.5
155 247 82 59 70.5 38.5 3043
156 248 81 46 63.5 31.5 3074.5157 249 93 51 72 40 3114.5158 250 93 64 78.5 46.5 3161159 251 92 64 78 46 3207
160 252 93 63 78 46 3253161 253 92 59 75.5 43.5 3296.5162 254 91 55 73 41 3337.5163 255 87 55 71 39 3376.5
164 256 65 43 54 22 3398.5165 257 72 36 54 22 3420.5166 258 83 45 64 32 3452.5167 259 90 54 72 40 3492.5168 260 93 56 74.5 42.5 3535169 261 93 59 76 44 3579170 262 92 58 75 43 3622171 263 93 60 76.5 44.5 3666.5172 264 93 61 77 45 3711.5173 265 94 60 77 45 3756.5174 266 95 62 78.5 46.5 3803175 267 88 59 73.5 41.5 3844.5176 268 91 59 75 43 3887.5
177 269 74 57 65.5 33.5 3921178 270 85 53 69 37 3958179 271 93 60 76.5 44.5 4002.5180 272 97 62 79.5 47.5 4050
181 273 98 62 80 48 4098182 274 95 54 74.5 42.5 4140.5183 275 96 61 78.5 46.5 4187184 276 96 57 76.5 44.5 4231.5
185 277 98 67 82.5 50.5 4282186 278 98 66 82 50 4332187 279 94 64 79 47 4379188 280 90 64 77 45 4424
189 281 94 63 78.5 46.5 4470.5190 282 92 61 76.5 44.5 4515191 283 87 57 72 40 4555192 284 87 57 72 40 4595193 285 87 61 74 42 4637194 286 88 63 75.5 43.5 4680.5195 287 80 63 71.5 39.5 4720196 288 82 57 69.5 37.5 4757.5197 289 85 56 70.5 38.5 4796198 290 88 56 72 40 4836199 291 88 59 73.5 41.5 4877.5200 292 89 59 74 42 4919.5201 293 89 60 74.5 42.5 4962
202 294 91 62 76.5 44.5 5006.5203 295 92 60 76 44 5050.5204 296 90 61 75.5 43.5 5094205 297 89 66 77.5 45.5 5139.5
206 298 91 62 76.5 44.5 5184207 299 84 61 72.5 40.5 5224.5208 300 90 57 73.5 41.5 5266209 301 95 61 78 46 5312
210 302 97 62 79.5 47.5 5359.5211 303 88 63 75.5 43.5 5403212 304 88 60 74 42 5445213 305 90 61 75.5 43.5 5488.5
214 306 90 62 76 44 5532.5215 307 93 62 77.5 45.5 5578216 308 86 60 73 41 5619217 309 90 61 75.5 43.5 5662.5218 310 94 62 78 46 5708.5219 311 81 63 72 40 5748.5220 312 81 60 70.5 38.5 5787221 313 81 57 69 37 5824222 314 83 63 73 41 5865223 315 87 58 72.5 40.5 5905.5224 316 90 59 74.5 42.5 5948225 317 76 58 67 35 5983226 318 81 58 69.5 37.5 6020.5
227 319 88 59 73.5 41.5 6062228 320 88 58 73 41 6103229 321 88 55 71.5 39.5 6142.5230 322 92 61 76.5 44.5 6187
231 323 94 63 78.5 46.5 6233.5232 324 83 59 71 39 6272.5233 325 80 58 69 37 6309.5234 326 81 55 68 36 6345.5
235 327 86 52 69 37 6382.5236 328 89 58 73.5 41.5 6424237 329 93 63 78 46 6470238 330 94 60 77 45 6515
239 331 95 63 79 47 6562240 332 93 65 79 47 6609241 333 90 63 76.5 44.5 6653.5242 334 85 58 71.5 39.5 6693243 335 85 54 69.5 37.5 6730.5244 336 88 54 71 39 6769.5245 337 89 58 73.5 41.5 6811246 338 91 57 74 42 6853247 339 92 61 76.5 44.5 6897.5248 340 89 62 75.5 43.5 6941249 341 87 59 73 41 6982250 342 79 47 63 31 7013251 343 70 49 59.5 27.5 7040.5
252 344 77 46 61.5 29.5 7070253 345 85 48 66.5 34.5 7104.5254 346 88 56 72 40 7144.5255 347 89 58 73.5 41.5 7186
256 348 83 59 71 39 7225257 349 86 55 70.5 38.5 7263.5258 350 88 57 72.5 40.5 7304259 351 82 57 69.5 37.5 7341.5
260 352 80 52 66 34 7375.5261 353 80 51 65.5 33.5 7409262 354 85 53 69 37 7446263 355 86 54 70 38 7484
0
200
400
600
800
1000
1200
1400
0 50 100 150 200
fr
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Blanding, UT
2000-2001
264 356 86 55 70.5 38.5 7522.5
265 357 86 56 71 39 7561.5266 358 86 56 71 39 7600.5267 359 86 56 71 39 7639.5268 360 88 56 72 40 7679.5
269 361 86 55 70.5 38.5 7718 104 893 length of freeze (day) 22
270 362 87 57 72 40 7758 126 822.5 frost depth (oF-day)70.5271 363 87 56 71.5 39.5 7797.5 average temperature 53.6272 364 86 56 71 39 7836.5273 365 86 59 72.5 40.5 7877
2001-2002 day of frost year degree cumulative
day of year (consecutive date) max. temp. min. temp avg. temp day (
oF) degree day (
oF)274 1 81 55 68 36 36
275 2 80 50 65 33 69276 3 83 51 67 35 104277 4 82 50 66 34 138278 5 79 48 63.5 31.5 169.5
279 6 77 51 64 32 201.5280 7 70 50 60 28 229.5281 8 71 45 58 26 255.5282 9 69 44 56.5 24.5 280
283 10 61 33 47 15 295284 11 59 33 46 14 309285 12 54 34 44 12 321286 13 68 36 52 20 341
287 14 73 41 57 25 366288 15 74 47 60.5 28.5 394.5289 16 72 41 56.5 24.5 419290 17 72 44 58 26 445291 18 77 45 61 29 474292 19 74 43 58.5 26.5 500.5293 20 73 44 58.5 26.5 527294 21 62 47 54.5 22.5 549.5295 22 73 44 58.5 26.5 576296 23 73 40 56.5 24.5 600.5297 24 65 32 48.5 16.5 617298 25 65 36 50.5 18.5 635.5299 26 71 39 55 23 658.5
300 27 72 45 58.5 26.5 685301 28 73 50 61.5 29.5 714.5302 29 72 47 59.5 27.5 742303 30 68 49 58.5 26.5 768.5
304 31 64 43 53.5 21.5 790305 32 64 36 50 18 808306 33 67 39 53 21 829307 34 70 39 54.5 22.5 851.5
308 35 70 46 58 26 877.5309 36 68 48 58 26 903.5310 37 68 48 58 26 929.5311 38 67 43 55 23 952.5
312 39 60 38 49 17 969.5313 40 63 36 49.5 17.5 987314 41 63 41 52 20 1007315 42 65 41 53 21 1028316 43 64 39 51.5 19.5 1047.5317 44 58 38 48 16 1063.5318 45 65 35 50 18 1081.5319 46 64 38 51 19 1100.5320 47 63 39 51 19 1119.5321 48 61 38 49.5 17.5 1137322 49 62 34 48 16 1153323 50 60 - - - 1153324 51 57 31 44 12 1165
325 52 53 29 41 9 1174326 53 48 35 41.5 9.5 1183.5327 54 43 29 36 4 1187.5328 55 41 22 31.5 -0.5 1187
329 56 40 22 31 -1 1186330 57 36 15 25.5 -6.5 1179.5331 58 34 15 24.5 -7.5 1172332 59 33 14 23.5 -8.5 1163.5
333 60 28 20 24 -8 1155.5334 61 37 25 31 -1 1154.5335 62 41 18 29.5 -2.5 1152336 63 43 32 37.5 5.5 1157.5
337 64 44 37 40.5 8.5 1166338 65 40 30 35 3 1169339 66 38 18 28 -4 1165340 67 40 20 30 -2 1163341 68 39 23 31 -1 1162342 69 42 20 31 -1 1161343 70 43 18 30.5 -1.5 1159.5344 71 42 23 32.5 0.5 1160345 72 37 19 28 -4 1156346 73 32 13 22.5 -9.5 1146.5347 74 34 10 22 -10 1136.5348 75 35 11 23 -9 1127.5349 76 32 11 21.5 -10.5 1117
350 77 39 10 24.5 -7.5 1109.5351 78 36 15 25.5 -6.5 1103352 79 40 17 28.5 -3.5 1099.5353 80 42 19 30.5 -1.5 1098
354 81 48 21 34.5 2.5 1100.5355 82 40 22 31 -1 1099.5356 83 38 17 27.5 -4.5 1095357 84 37 17 27 -5 1090
358 85 41 17 29 -3 1087359 86 49 17 33 1 1088360 87 40 20 30 -2 1086361 88 46 24 35 3 1089
362 89 46 23 34.5 2.5 1091.5363 90 32 27 29.5 -2.5 1089364 91 36 25 30.5 -1.5 1087.5365 92 36 24 30 -2 1085.51 93 42 16 29 -3 1082.52 94 36 16 26 -6 1076.5
day of frost year
3 95 36 16 26 -6 1070.5
4 96 38 22 30 -2 1068.55 97 39 16 27.5 -4.5 10646 98 45 23 34 2 10667 99 49 29 39 7 1073
8 100 49 30 39.5 7.5 1080.59 101 48 33 40.5 8.5 108910 102 49 30 39.5 7.5 1096.511 103 50 23 36.5 4.5 1101
12 104 46 29 37.5 5.5 1106.513 105 43 25 34 2 1108.514 106 44 20 32 0 1108.515 107 46 26 36 4 1112.516 108 42 22 32 0 1112.517 109 39 18 28.5 -3.5 110918 110 37 15 26 -6 110319 111 32 7 19.5 -12.5 1090.520 112 39 17 28 -4 1086.521 113 41 17 29 -3 1083.522 114 47 24 35.5 3.5 108723 115 36 16 26 -6 108124 116 43 10 26.5 -5.5 1075.5
25 117 44 17 30.5 -1.5 107426 118 51 15 33 1 107527 119 53 29 41 9 108428 120 48 31 39.5 7.5 1091.5
29 121 35 24 29.5 -2.5 108930 122 35 16 25.5 -6.5 1082.531 123 34 9 21.5 -10.5 107232 124 39 9 24 -8 1064
33 125 41 20 30.5 -1.5 1062.534 126 46 20 33 1 1063.535 127 48 19 33.5 1.5 106536 128 38 17 27.5 -4.5 1060.5
37 129 50 18 34 2 1062.538 130 47 21 34 2 1064.539 131 52 22 37 5 1069.540 132 43 16 29.5 -2.5 106741 133 48 17 32.5 0.5 1067.542 134 49 21 35 3 1070.543 135 53 25 39 7 1077.544 136 48 25 36.5 4.5 108245 137 45 32 38.5 6.5 1088.546 138 48 18 33 1 1089.547 139 52 25 38.5 6.5 109648 140 50 30 40 8 110449 141 48 37 42.5 10.5 1114.5
50 142 50 23 36.5 4.5 111951 143 53 26 39.5 7.5 1126.552 144 54 25 39.5 7.5 113453 145 59 29 44 12 1146
54 146 54 34 44 12 115855 147 54 33 43.5 11.5 1169.556 148 42 28 35 3 1172.557 149 42 21 31.5 -0.5 1172
58 150 54 18 36 4 117659 151 54 23 38.5 6.5 1182.560 152 34 14 24 -8 1174.561 153 31 10 20.5 -11.5 1163
62 154 39 6 22.5 -9.5 1153.563 155 48 15 31.5 -0.5 115364 156 51 22 36.5 4.5 1157.565 157 58 28 43 11 1168.566 158 59 46 52.5 20.5 118967 159 47 15 31 -1 118868 160 43 13 28 -4 118469 161 53 29 41 9 119370 162 57 33 45 13 120671 163 57 32 44.5 12.5 1218.572 164 68 35 51.5 19.5 123873 165 42 24 33 1 123974 166 45 19 32 0 1239
75 167 44 20 32 0 123976 168 42 30 36 4 124377 169 46 27 36.5 4.5 1247.578 170 55 23 39 7 1254.5
79 171 63 30 46.5 14.5 126980 172 67 35 51 19 128881 173 70 39 54.5 22.5 1310.582 174 64 38 51 19 1329.5
83 175 54 33 43.5 11.5 134184 176 50 32 41 9 135085 177 59 31 45 13 136386 178 68 37 52.5 20.5 1383.5
87 179 72 36 54 22 1405.588 180 70 42 56 24 1429.589 181 68 36 52 20 1449.590 182 74 39 56.5 24.5 147491 183 77 42 59.5 27.5 1501.592 184 78 42 60 28 1529.593 185 77 43 60 28 1557.594 186 77 44 60.5 28.5 158695 187 75 45 60 28 161496 188 67 40 53.5 21.5 1635.597 189 70 40 55 23 1658.598 190 66 39 52.5 20.5 167999 191 75 41 58 26 1705
100 192 67 48 57.5 25.5 1730.5101 193 72 39 55.5 23.5 1754102 194 63 46 - - 1561.5103 195 76 39 57.5 25.5 1587
104 196 73 45 59 27 1614105 197 76 48 62 30 1644106 198 61 44 52.5 20.5 1664.5107 199 70 41 55.5 23.5 1688
108 200 69 38 53.5 21.5 1709.5109 201 69 36 52.5 20.5 1730110 202 58 34 46 14 1744111 203 62 28 45 13 1757
112 204 70 30 50 18 1775
113 205 77 42 59.5 27.5 1802.5114 206 79 43 61 29 1831.5115 207 73 52 62.5 30.5 1862116 208 74 48 61 29 1891
117 209 67 38 52.5 20.5 1911.5118 210 71 36 53.5 21.5 1933119 211 76 44 60 28 1961120 212 78 43 60.5 28.5 1989.5
121 213 65 40 52.5 20.5 2010122 214 64 36 50 18 2028123 215 71 37 54 22 2050124 216 73 43 58 26 2076125 217 76 46 61 29 2105126 218 79 47 63 31 2136127 219 77 46 61.5 29.5 2165.5128 220 68 44 56 24 2189.5129 221 73 35 54 22 2211.5130 222 73 49 61 29 2240.5131 223 75 46 60.5 28.5 2269132 224 70 48 59 27 2296133 225 76 47 61.5 29.5 2325.5
134 226 84 56 70 38 2363.5135 227 84 51 67.5 35.5 2399136 228 86 51 68.5 36.5 2435.5137 229 85 51 68 36 2471.5
138 230 87 54 70.5 38.5 2510139 231 86 54 70 38 2548140 232 83 68 75.5 43.5 2591.5141 233 68 44 56 24 2615.5
142 234 66 33 49.5 17.5 2633143 235 68 39 53.5 21.5 2654.5144 236 71 41 56 24 2678.5145 237 79 41 60 28 2706.5
146 238 82 51 66.5 34.5 2741147 239 85 52 68.5 36.5 2777.5148 240 87 52 69.5 37.5 2815149 241 92 54 73 41 2856150 242 96 62 79 47 2903151 243 98 61 79.5 47.5 2950.5152 244 93 64 78.5 46.5 2997153 245 86 55 70.5 38.5 3035.5154 246 78 51 64.5 32.5 3068155 247 79 46 62.5 30.5 3098.5156 248 86 50 68 36 3134.5157 249 91 55 73 41 3175.5158 250 94 56 75 43 3218.5
159 251 93 57 75 43 3261.5160 252 87 60 73.5 41.5 3303161 253 82 48 65 33 3336162 254 85 52 68.5 36.5 3372.5
163 255 90 54 72 40 3412.5164 256 92 60 76 44 3456.5165 257 94 60 77 45 3501.5166 258 95 59 77 45 3546.5
167 259 95 62 78.5 46.5 3593168 260 96 60 78 46 3639169 261 95 61 78 46 3685170 262 94 60 77 45 3730
171 263 95 60 77.5 45.5 3775.5172 264 89 78 83.5 51.5 3827173 265 91 63 77 45 3872174 266 93 59 76 44 3916175 267 96 61 78.5 46.5 3962.5176 268 99 61 80 48 4010.5177 269 96 63 79.5 47.5 4058178 270 95 66 80.5 48.5 4106.5179 271 95 65 80 48 4154.5180 272 96 60 78 46 4200.5181 273 99 64 81.5 49.5 4250182 274 101 66 83.5 51.5 4301.5183 275 101 67 84 52 4353.5
184 276 88 69 78.5 46.5 4400185 277 86 60 73 41 4441186 278 91 69 80 48 4489187 279 95 62 78.5 46.5 4535.5
188 280 98 65 81.5 49.5 4585189 281 99 66 82.5 50.5 4635.5190 282 97 66 81.5 49.5 4685191 283 93 65 79 47 4732
192 284 97 62 79.5 47.5 4779.5193 285 98 63 80.5 48.5 4828194 286 101 69 85 53 4881195 287 100 71 85.5 53.5 4934.5
196 288 97 65 81 49 4983.5197 289 94 63 78.5 46.5 5030198 290 94 62 78 46 5076199 291 94 62 78 46 5122200 292 91 61 76 44 5166201 293 87 58 72.5 40.5 5206.5202 294 94 58 76 44 5250.5203 295 89 68 78.5 46.5 5297204 296 91 58 74.5 42.5 5339.5205 297 93 63 78 46 5385.5206 298 90 68 79 47 5432.5207 299 93 59 76 44 5476.5208 300 89 57 73 41 5517.5
209 301 94 59 76.5 44.5 5562210 302 97 61 79 47 5609211 303 95 64 79.5 47.5 5656.5212 304 97 64 80.5 48.5 5705
213 305 96 69 82.5 50.5 5755.5214 306 75 64 69.5 37.5 5793215 307 87 60 73.5 41.5 5834.5216 308 87 60 73.5 41.5 5876
217 309 87 61 74 42 5918218 310 87 61 74 42 5960219 311 86 67 76.5 44.5 6004.5220 312 91 60 75.5 43.5 6048
221 313 94 59 76.5 44.5 6092.5
222 314 96 60 78 46 6138.5223 315 96 62 79 47 6185.5224 316 98 64 81 49 6234.5225 317 89 60 74.5 42.5 6277
226 318 94 59 76.5 44.5 6321.5227 319 98 62 80 48 6369.5228 320 98 62 80 48 6417.5229 321 99 63 81 49 6466.5
230 322 99 64 81.5 49.5 6516231 323 95 64 79.5 47.5 6563.5232 324 78 58 68 36 6599.5233 325 85 58 71.5 39.5 6639234 326 86 58 72 40 6679235 327 86 59 72.5 40.5 6719.5236 328 88 56 72 40 6759.5237 329 91 56 73.5 41.5 6801238 330 93 58 75.5 43.5 6844.5239 331 90 56 73 41 6885.5240 332 92 59 75.5 43.5 6929241 333 72 55 63.5 31.5 6960.5242 334 84 51 67.5 35.5 6996
243 335 89 60 74.5 42.5 7038.5244 336 91 62 76.5 44.5 7083245 337 91 59 75 43 7126246 338 83 64 73.5 41.5 7167.5
247 339 90 57 73.5 41.5 7209248 340 91 60 75.5 43.5 7252.5249 341 79 56 67.5 35.5 7288250 342 73 54 63.5 31.5 7319.5
251 343 72 53 62.5 30.5 7350252 344 77 51 64 32 7382253 345 76 57 66.5 34.5 7416.5254 346 69 53 61 29 7445.5
255 347 69 53 61 29 7474.5256 348 75 51 63 31 7505.5257 349 79 50 64.5 32.5 7538258 350 79 53 66 34 7572259 351 77 53 65 33 7605260 352 79 51 65 33 7638261 353 64 47 55.5 23.5 7661.5262 354 72 45 58.5 26.5 7688263 355 78 45 61.5 29.5 7717.5264 356 81 51 66 34 7751.5265 357 83 51 67 35 7786.5266 358 81 52 66.5 34.5 7821267 359 82 51 66.5 34.5 7855.5
268 360 79 53 66 34 7889.5269 361 78 49 63.5 31.5 7921 55 1187 length of freeze (day) 42
270 362 75 53 64 32 7953 97 1064 frost depth (oF-day)123271 363 78 50 64 32 7985 average temperature 54.7272 364 66 46 56 24 8009
273 365 70 44 57 25 8034
2002-2003
day of frost year degree cumulativeday of year (consecutive date) max. temp. min. temp avg. temp day (
oF) degree day (
oF)274 1 70 43 56.5 24.5 24.5275 2 59 43 51 19 43.5276 3 49 35 42 10 53.5277 4 58 35 46.5 14.5 68278 5 66 42 54 22 90279 6 73 42 57.5 25.5 115.5280 7 73 43 58 26 141.5281 8 76 46 61 29 170.5
282 9 73 46 59.5 27.5 198283 10 74 45 59.5 27.5 225.5284 11 72 46 59 27 252.5285 12 73 42 57.5 25.5 278
286 13 69 40 54.5 22.5 300.5287 14 70 42 56 24 324.5288 15 70 40 55 23 347.5289 16 72 41 56.5 24.5 372
290 17 69 42 55.5 23.5 395.5291 18 69 39 54 22 417.5292 19 67 38 52.5 20.5 438293 20 67 39 53 21 459
294 21 67 39 53 21 480295 22 63 43 53 21 501296 23 54 39 46.5 14.5 515.5297 24 58 39 48.5 16.5 532298 25 58 37 47.5 15.5 547.5299 26 58 40 49 17 564.5300 27 52 36 44 12 576.5301 28 51 34 42.5 10.5 587302 29 42 32 37 5 592303 30 50 30 40 8 600304 31 54 36 45 13 613305 32 56 36 46 14 627306 33 56 35 45.5 13.5 640.5
307 34 48 23 35.5 3.5 644308 35 49 31 40 8 652309 36 56 27 41.5 9.5 661.5310 37 57 30 43.5 11.5 673
311 38 58 31 44.5 12.5 685.5312 39 49 37 43 11 696.5313 40 59 38 48.5 16.5 713314 41 49 30 39.5 7.5 720.5
315 42 47 32 39.5 7.5 728316 43 45 27 36 4 732317 44 49 30 39.5 7.5 739.5318 45 49 32 40.5 8.5 748
319 46 45 28 36.5 4.5 752.5320 47 45 25 35 3 755.5321 48 47 27 37 5 760.5322 49 53 28 40.5 8.5 769323 50 53 27 40 8 777324 51 59 32 45.5 13.5 790.5
1040
1060
1080
1100
1120
1140
1160
1180
1200
0 50 100 150 200
fr
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day of frost year
Blanding, UT
2001-2002
325 52 59 34 46.5 14.5 805
326 53 58 33 45.5 13.5 818.5327 54 57 33 45 13 831.5328 55 56 34 45 13 844.5329 56 50 30 40 8 852.5
330 57 48 24 36 4 856.5331 58 49 23 36 4 860.5332 59 51 25 38 6 866.5333 60 54 27 40.5 8.5 875
334 61 52 29 40.5 8.5 883.5335 62 48 33 40.5 8.5 892336 63 47 28 37.5 5.5 897.5337 64 46 30 38 6 903.5338 65 48 26 37 5 908.5339 66 48 26 37 5 913.5340 67 47 25 36 4 917.5341 68 47 26 36.5 4.5 922342 69 51 27 39 7 929343 70 48 26 37 5 934344 71 44 23 33.5 1.5 935.5345 72 46 23 34.5 2.5 938346 73 50 27 38.5 6.5 944.5
347 74 46 24 35 3 947.5348 75 48 25 36.5 4.5 952349 76 51 32 41.5 9.5 961.5350 77 48 31 39.5 7.5 969
351 78 40 26 33 1 970352 79 38 20 29 -3 967353 80 38 16 27 -5 962354 81 33 15 24 -8 954
355 82 34 15 24.5 -7.5 946.5356 83 40 19 29.5 -2.5 944357 84 34 26 30 -2 942358 85 33 26 29.5 -2.5 939.5
359 86 31 13 22 -10 929.5360 87 32 10 21 -11 918.5361 88 33 14 23.5 -8.5 910362 89 43 18 30.5 -1.5 908.5363 90 42 26 34 2 910.5364 91 38 16 27 -5 905.5365 92 33 21 27 -5 900.51 93 46 27 36.5 4.5 9052 94 45 21 33 1 9063 95 44 25 34.5 2.5 908.54 96 49 29 39 7 915.55 97 41 30 35.5 3.5 9196 98 55 34 44.5 12.5 931.5
7 99 52 30 41 9 940.58 100 51 29 40 8 948.59 101 42 32 37 5 953.510 102 43 34 38.5 6.5 960
11 103 44 37 40.5 8.5 968.512 104 47 26 36.5 4.5 97313 105 48 29 38.5 6.5 979.514 106 48 29 38.5 6.5 986
15 107 49 33 41 9 99516 108 50 26 38 6 100117 109 53 28 40.5 8.5 1009.518 110 51 27 39 7 1016.5
19 111 52 29 40.5 8.5 102520 112 52 28 40 8 103321 113 52 29 40.5 8.5 1041.522 114 53 30 41.5 9.5 105123 115 54 30 42 10 106124 116 58 35 46.5 14.5 1075.525 117 53 32 42.5 10.5 108626 118 53 30 41.5 9.5 1095.527 119 54 32 43 11 1106.528 120 56 31 43.5 11.5 111829 121 53 31 42 10 112830 122 56 30 43 11 113931 123 63 34 48.5 16.5 1155.5
32 124 61 35 48 16 1171.533 125 53 34 43.5 11.5 118334 126 44 24 34 2 118535 127 44 19 31.5 -0.5 1184.5
36 128 38 20 29 -3 1181.537 129 37 15 26 -6 1175.538 130 40 14 27 -5 1170.539 131 42 15 28.5 -3.5 1167
40 132 41 16 28.5 -3.5 1163.541 133 46 17 31.5 -0.5 116342 134 44 23 33.5 1.5 1164.543 135 51 29 40 8 1172.5
44 136 44 34 39 7 1179.545 137 50 33 41.5 9.5 118946 138 52 30 41 9 119847 139 50 31 40.5 8.5 1206.548 140 52 34 43 11 1217.549 141 41 38 39.5 7.5 122550 142 44 22 33 1 122651 143 51 31 41 9 123552 144 51 30 40.5 8.5 1243.553 145 50 27 38.5 6.5 125054 146 45 19 32 0 125055 147 51 28 39.5 7.5 1257.556 148 47 31 39 7 1264.5
57 149 40 31 35.5 3.5 126858 150 34 25 29.5 -2.5 1265.559 151 38 26 32 0 1265.560 152 37 23 30 -2 1263.5
61 153 41 18 29.5 -2.5 126162 154 42 21 31.5 -0.5 1260.563 155 36 30 33 1 1261.564 156 45 23 34 2 1263.5
65 157 50 24 37 5 1268.566 158 55 30 42.5 10.5 127967 159 59 32 45.5 13.5 1292.568 160 61 33 47 15 1307.5
69 161 64 36 50 18 1325.5
70 162 65 39 52 20 1345.571 163 68 38 53 21 1366.572 164 69 40 54.5 22.5 138973 165 63 41 52 20 1409
74 166 61 36 48.5 16.5 1425.575 167 53 37 45 13 1438.576 168 41 32 36.5 4.5 144377 169 45 32 38.5 6.5 1449.5
78 170 48 33 40.5 8.5 145879 171 50 32 41 9 146780 172 54 32 43 11 147881 173 61 32 46.5 14.5 1492.582 174 65 36 50.5 18.5 151183 175 63 39 51 19 153084 176 63 41 52 20 155085 177 64 36 50 18 156886 178 46 28 37 5 157387 179 44 25 34.5 2.5 1575.588 180 50 24 37 5 1580.589 181 63 27 45 13 1593.590 182 67 38 52.5 20.5 1614
91 183 71 40 55.5 23.5 1637.592 184 65 41 53 21 1658.593 185 53 31 42 10 1668.594 186 52 24 38 6 1674.5
95 187 51 29 40 8 1682.596 188 48 23 35.5 3.5 168697 189 52 26 39 7 169398 190 62 31 46.5 14.5 1707.5
99 191 70 34 52 20 1727.5100 192 74 33 53.5 21.5 1749101 193 74 35 54.5 22.5 1771.5102 194 68 41 54.5 22.5 1794
103 195 73 42 57.5 25.5 1819.5104 196 69 44 56.5 24.5 1844105 197 52 34 43 11 1855106 198 62 29 45.5 13.5 1868.5107 199 66 38 52 20 1888.5108 200 56 32 44 12 1900.5109 201 59 31 45 13 1913.5110 202 64 33 48.5 16.5 1930111 203 69 46 57.5 25.5 1955.5112 204 64 36 50 18 1973.5113 205 57 29 43 11 1984.5114 206 68 35 51.5 19.5 2004115 207 72 40 56 24 2028
116 208 74 41 57.5 25.5 2053.5117 209 74 43 58.5 26.5 2080118 210 73 45 59 27 2107119 211 67 42 54.5 22.5 2129.5
120 212 63 37 50 18 2147.5121 213 66 35 50.5 18.5 2166122 214 70 41 55.5 23.5 2189.5123 215 74 49 61.5 29.5 2219
124 216 62 37 49.5 17.5 2236.5125 217 62 39 50.5 18.5 2255126 218 64 37 50.5 18.5 2273.5127 219 69 44 56.5 24.5 2298
128 220 63 42 52.5 20.5 2318.5129 221 58 35 46.5 14.5 2333130 222 63 31 47 15 2348131 223 71 39 55 23 2371132 224 78 45 61.5 29.5 2400.5133 225 79 51 65 33 2433.5134 226 76 52 64 32 2465.5135 227 68 48 58 26 2491.5136 228 82 46 64 32 2523.5137 229 82 54 68 36 2559.5138 230 78 57 67.5 35.5 2595139 231 80 48 64 32 2627140 232 80 49 64.5 32.5 2659.5
141 233 83 49 66 34 2693.5142 234 89 48 68.5 36.5 2730143 235 89 53 71 39 2769144 236 90 57 73.5 41.5 2810.5
145 237 89 59 74 42 2852.5146 238 87 53 70 38 2890.5147 239 93 58 75.5 43.5 2934148 240 93 63 78 46 2980
149 241 93 60 76.5 44.5 3024.5150 242 94 64 79 47 3071.5151 243 89 60 74.5 42.5 3114152 244 88 58 73 41 3155
153 245 92 55 73.5 41.5 3196.5154 246 89 62 75.5 43.5 3240155 247 88 59 73.5 41.5 3281.5156 248 80 55 67.5 35.5 3317157 249 83 54 68.5 36.5 3353.5158 250 82 53 67.5 35.5 3389159 251 88 55 71.5 39.5 3428.5160 252 89 53 71 39 3467.5161 253 87 57 72 40 3507.5162 254 86 52 69 37 3544.5163 255 82 53 67.5 35.5 3580164 256 86 53 69.5 37.5 3617.5165 257 89 58 73.5 41.5 3659
166 258 92 61 76.5 44.5 3703.5167 259 93 64 78.5 46.5 3750168 260 89 59 74 42 3792169 261 86 55 70.5 38.5 3830.5
170 262 85 56 70.5 38.5 3869171 263 80 56 68 36 3905172 264 83 51 67 35 3940173 265 85 59 72 40 3980
174 266 86 56 71 39 4019175 267 80 55 67.5 35.5 4054.5176 268 80 45 62.5 30.5 4085177 269 85 53 69 37 4122
178 270 89 54 71.5 39.5 4161.5
179 271 93 52 72.5 40.5 4202180 272 93 55 74 42 4244181 273 94 61 77.5 45.5 4289.5182 274 94 64 79 47 4336.5
183 275 94 60 77 45 4381.5184 276 95 61 78 46 4427.5185 277 100 62 81 49 4476.5186 278 100 67 83.5 51.5 4528
187 279 98 65 81.5 49.5 4577.5188 280 95 64 79.5 47.5 4625189 281 98 62 80 48 4673190 282 98 64 81 49 4722191 283 101 57 79 47 4769192 284 101 63 82 50 4819193 285 101 66 83.5 51.5 4870.5194 286 102 66 84 52 4922.5195 287 104 70 87 55 4977.5196 288 102 70 86 54 5031.5197 289 97 70 83.5 51.5 5083198 290 97 70 83.5 51.5 5134.5199 291 97 66 81.5 49.5 5184
200 292 99 67 83 51 5235201 293 95 69 82 50 5285202 294 95 66 80.5 48.5 5333.5203 295 100 65 82.5 50.5 5384
204 296 96 72 84 52 5436205 297 97 69 83 51 5487206 298 96 65 80.5 48.5 5535.5207 299 99 68 83.5 51.5 5587
208 300 95 65 80 48 5635209 301 88 59 73.5 41.5 5676.5210 302 90 62 76 44 5720.5211 303 93 63 78 46 5766.5
212 304 91 66 78.5 46.5 5813213 305 90 65 77.5 45.5 5858.5214 306 92 60 76 44 5902.5215 307 90 60 75 43 5945.5216 308 93 61 77 45 5990.5217 309 94 64 79 47 6037.5218 310 94 65 79.5 47.5 6085219 311 94 67 80.5 48.5 6133.5220 312 90 60 75 43 6176.5221 313 96 64 80 48 6224.5222 314 97 66 81.5 49.5 6274223 315 97 66 81.5 49.5 6323.5224 316 95 66 80.5 48.5 6372
225 317 95 68 81.5 49.5 6421.5226 318 95 65 80 48 6469.5227 319 82 58 70 38 6507.5228 320 80 55 67.5 35.5 6543
229 321 86 58 72 40 6583230 322 93 61 77 45 6628231 323 96 61 78.5 46.5 6674.5232 324 92 63 77.5 45.5 6720
233 325 93 64 78.5 46.5 6766.5234 326 88 62 75 43 6809.5235 327 87 59 73 41 6850.5236 328 83 58 70.5 38.5 6889
237 329 91 61 76 44 6933238 330 90 60 75 43 6976239 331 79 63 71 39 7015240 332 89 59 74 42 7057241 333 87 59 73 41 7098242 334 84 60 72 40 7138243 335 88 57 72.5 40.5 7178.5244 336 91 62 76.5 44.5 7223245 337 91 62 76.5 44.5 7267.5246 338 86 66 76 44 7311.5247 339 84 70 77 45 7356.5248 340 80 60 70 38 7394.5249 341 73 55 64 32 7426.5
250 342 78 52 65 33 7459.5251 343 83 56 69.5 37.5 7497252 344 72 59 65.5 33.5 7530.5253 345 68 49 58.5 26.5 7557
254 346 71 44 57.5 25.5 7582.5255 347 78 47 62.5 30.5 7613256 348 72 52 62 30 7643257 349 76 42 59 27 7670
258 350 81 50 65.5 33.5 7703.5259 351 84 54 69 37 7740.5260 352 83 50 66.5 34.5 7775261 353 70 38 54 22 7797
262 354 76 43 59.5 27.5 7824.5263 355 80 51 65.5 33.5 7858264 356 79 47 63 31 7889265 357 82 52 67 35 7924266 358 84 52 68 36 7960267 359 84 54 69 37 7997268 360 85 56 70.5 38.5 8035.5 78 970 length of freeze (day) 14
269 361 90 50 70 38 8073.5 92 900.5 frost depth (oF-day)69.5270 362 88 58 73 41 8114.5 average temperature 54.5271 363 86 57 71.5 39.5 8154
272 364 85 55 70 38 8192273 365 86 55 70.5 38.5 8230.5
2003-2004 day of frost year degree cumulative
day of year (consecutive date) max. temp. min. temp avg. temp day (
oF) degree day (
oF)274 1 85 55 70 38 38275 2 69 50 59.5 27.5 65.5
276 3 59 57 58 26 91.5277 4 67 49 58 26 117.5278 5 72 47 59.5 27.5 145279 6 75 49 62 30 175280 7 75 50 62.5 30.5 205.5281 8 76 48 62 30 235.5
0
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800
1000
1200
1400
0 50 100 150 200
fr
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day of frost year
Blanding, UT
2002-2003
282 9 79 49 64 32 267.5
283 10 76 52 64 32 299.5284 11 77 42 59.5 27.5 327285 12 72 42 57 25 352286 13 66 45 55.5 23.5 375.5
287 14 69 38 53.5 21.5 397288 15 73 41 57 25 422289 16 78 45 61.5 29.5 451.5290 17 78 47 62.5 30.5 482
291 18 79 48 63.5 31.5 513.5292 19 79 47 63 31 544.5293 20 80 50 65 33 577.5294 21 81 49 65 33 610.5295 22 80 49 64.5 32.5 643296 23 77 48 62.5 30.5 673.5297 24 73 46 59.5 27.5 701298 25 57 39 48 16 717299 26 65 35 50 18 735300 27 68 40 54 22 757301 28 73 46 59.5 27.5 784.5302 29 72 42 57 25 809.5303 30 68 45 56.5 24.5 834
304 31 64 43 53.5 21.5 855.5305 32 61 43 52 20 875.5306 33 59 38 48.5 16.5 892307 34 52 31 41.5 9.5 901.5
308 35 48 26 37 5 906.5309 36 50 29 39.5 7.5 914310 37 51 29 40 8 922311 38 56 34 45 13 935
312 39 57 33 45 13 948313 40 55 39 47 15 963314 41 44 39 41.5 9.5 972.5315 42 54 38 46 14 986.5
316 43 49 37 43 11 997.5317 44 44 38 41 9 1006.5318 45 50 33 41.5 9.5 1016319 46 49 33 41 9 1025320 47 44 33 38.5 6.5 1031.5321 48 45 33 39 7 1038.5322 49 49 26 37.5 5.5 1044323 50 50 30 40 8 1052324 51 54 32 43 11 1063325 52 53 34 43.5 11.5 1074.5326 53 47 15 31 -1 1073.5327 54 33 9 21 -11 1062.5328 55 37 15 26 -6 1056.5
329 56 45 25 35 3 1059.5330 57 39 23 31 -1 1058.5331 58 41 20 30.5 -1.5 1057332 59 38 18 28 -4 1053
333 60 48 15 31.5 -0.5 1052.5334 61 53 21 37 5 1057.5335 62 58 33 45.5 13.5 1071336 63 56 31 43.5 11.5 1082.5
337 64 52 28 40 8 1090.5338 65 54 28 41 9 1099.5339 66 48 28 38 6 1105.5340 67 52 32 42 10 1115.5
341 68 54 38 46 14 1129.5342 69 42 36 39 7 1136.5343 70 43 22 32.5 0.5 1137344 71 41 19 30 -2 1135345 72 44 23 33.5 1.5 1136.5346 73 44 21 32.5 0.5 1137347 74 45 21 33 1 1138348 75 44 24 34 2 1140349 76 33 17 25 -7 1133350 77 35 13 24 -8 1125351 78 43 18 30.5 -1.5 1123.5352 79 45 21 33 1 1124.5353 80 52 26 39 7 1131.5
354 81 50 28 39 7 1138.5355 82 51 30 40.5 8.5 1147356 83 49 28 38.5 6.5 1153.5357 84 45 21 33 1 1154.5
358 85 43 26 34.5 2.5 1157359 86 45 30 37.5 5.5 1162.5360 87 42 29 35.5 3.5 1166361 88 31 18 24.5 -7.5 1158.5
362 89 31 9 20 -12 1146.5363 90 33 14 23.5 -8.5 1138364 91 38 24 31 -1 1137365 92 40 23 31.5 -0.5 1136.5
1 93 40 23 31.5 -0.5 11362 94 39 32 35.5 3.5 1139.53 95 36 22 29 -3 1136.54 96 31 7 19 -13 1123.55 97 30 5 17.5 -14.5 11096 98 34 9 21.5 -10.5 1098.57 99 37 22 29.5 -2.5 10968 100 45 22 33.5 1.5 1097.59 101 45 23 34 2 1099.510 102 49 24 36.5 4.5 110411 103 48 26 37 5 110912 104 45 26 35.5 3.5 1112.513 105 48 25 36.5 4.5 1117
14 106 43 25 34 2 111915 107 37 29 33 1 112016 108 41 29 35 3 112317 109 47 27 37 5 1128
18 110 44 24 34 2 113019 111 40 25 32.5 0.5 1130.520 112 42 26 34 2 1132.521 113 45 21 33 1 1133.5
22 114 45 22 33.5 1.5 113523 115 46 22 34 2 113724 116 43 21 32 0 113725 117 36 18 27 -5 1132
26 118 32 12 22 -10 1122
27 119 37 14 25.5 -6.5 1115.528 120 46 21 33.5 1.5 111729 121 50 24 37 5 112230 122 46 26 36 4 1126
31 123 36 23 29.5 -2.5 1123.532 124 32 11 21.5 -10.5 111333 125 32 14 23 -9 110434 126 33 26 29.5 -2.5 1101.5
35 127 34 18 26 -6 1095.536 128 39 19 29 -3 1092.537 129 38 12 25 -7 1085.538 130 35 15 25 -7 1078.539 131 38 16 27 -5 1073.540 132 41 15 28 -4 1069.541 133 43 17 30 -2 1067.542 134 38 17 27.5 -4.5 106343 135 32 10 21 -11 105244 136 31 7 19 -13 103945 137 38 15 26.5 -5.5 1033.546 138 43 20 31.5 -0.5 103347 139 48 24 36 4 1037
48 140 51 29 40 8 104549 141 54 37 45.5 13.5 1058.550 142 53 32 42.5 10.5 106951 143 47 27 37 5 1074
52 144 45 31 38 6 108053 145 43 30 36.5 4.5 1084.554 146 49 33 41 9 1093.555 147 43 31 37 5 1098.5
56 148 49 30 39.5 7.5 110657 149 49 33 41 9 111558 150 41 34 37.5 5.5 1120.559 151 40 25 32.5 0.5 1121
60 152 42 23 32.5 0.5 1121.561 153 43 24 33.5 1.5 112362 154 43 29 36 4 112763 155 50 30 40 8 113564 156 50 30 40 8 114365 157 48 27 37.5 5.5 1148.566 158 56 27 41.5 9.5 115867 159 64 33 48.5 16.5 1174.568 160 69 36 52.5 20.5 119569 161 67 40 53.5 21.5 1216.570 162 68 39 53.5 21.5 123871 163 66 39 52.5 20.5 1258.572 164 66 36 51 19 1277.5
73 165 67 38 52.5 20.5 129874 166 68 38 53 21 131975 167 69 36 52.5 20.5 1339.576 168 67 36 51.5 19.5 1359
77 169 69 36 52.5 20.5 1379.578 170 70 38 54 22 1401.579 171 74 40 57 25 1426.580 172 80 47 63.5 31.5 1458
81 173 76 47 61.5 29.5 1487.582 174 77 44 60.5 28.5 151683 175 76 47 61.5 29.5 1545.584 176 71 43 57 25 1570.5
85 177 71 44 57.5 25.5 159686 178 68 41 54.5 22.5 1618.587 179 55 37 46 14 1632.588 180 58 30 44 12 1644.589 181 68 33 50.5 18.5 166390 182 71 37 54 22 168591 183 75 41 58 26 171192 184 70 47 58.5 26.5 1737.593 185 61 42 51.5 19.5 175794 186 55 36 45.5 13.5 1770.595 187 55 38 46.5 14.5 178596 188 53 37 45 13 179897 189 61 35 48 16 1814
98 190 61 41 51 19 183399 191 60 39 49.5 17.5 1850.5100 192 65 40 52.5 20.5 1871101 193 53 33 43 11 1882
102 194 58 34 46 14 1896103 195 66 34 50 18 1914104 196 70 39 54.5 22.5 1936.5105 197 70 42 56 24 1960.5
106 198 71 41 56 24 1984.5107 199 71 41 56 24 2008.5108 200 71 45 58 26 2034.5109 201 58 31 44.5 12.5 2047
110 202 63 37 50 18 2065111 203 65 36 50.5 18.5 2083.5112 204 60 38 49 17 2100.5113 205 54 38 46 14 2114.5114 206 57 34 45.5 13.5 2128115 207 61 34 47.5 15.5 2143.5116 208 68 38 53 21 2164.5117 209 75 41 58 26 2190.5118 210 78 36 57 25 2215.5119 211 78 46 62 30 2245.5120 212 64 35 49.5 17.5 2263121 213 54 38 46 14 2277122 214 68 37 52.5 20.5 2297.5
123 215 75 43 59 27 2324.5124 216 80 46 63 31 2355.5125 217 85 50 67.5 35.5 2391126 218 83 54 68.5 36.5 2427.5
127 219 81 51 66 34 2461.5128 220 80 49 64.5 32.5 2494129 221 82 50 66 34 2528130 222 83 55 69 37 2565
131 223 83 49 66 34 2599132 224 73 46 59.5 27.5 2626.5133 225 67 45 56 24 2650.5134 226 65 37 51 19 2669.5
135 227 74 40 57 25 2694.5
136 228 81 52 66.5 34.5 2729137 229 82 54 68 36 2765138 230 76 53 64.5 32.5 2797.5139 231 82 51 66.5 34.5 2832
140 232 82 53 67.5 35.5 2867.5141 233 80 54 67 35 2902.5142 234 77 48 62.5 30.5 2933143 235 73 46 59.5 27.5 2960.5
144 236 75 44 59.5 27.5 2988145 237 75 44 59.5 27.5 3015.5146 238 77 45 61 29 3044.5147 239 78 45 61.5 29.5 3074148 240 83 50 66.5 34.5 3108.5149 241 83 53 68 36 3144.5150 242 70 50 60 28 3172.5151 243 71 38 54.5 22.5 3195152 244 81 44 62.5 30.5 3225.5153 245 89 55 72 40 3265.5154 246 90 58 74 42 3307.5155 247 92 55 73.5 41.5 3349156 248 92 59 75.5 43.5 3392.5
157 249 94 59 76.5 44.5 3437158 250 95 60 77.5 45.5 3482.5159 251 95 59 77 45 3527.5160 252 95 55 75 43 3570.5
161 253 83 50 66.5 34.5 3605162 254 80 52 66 34 3639163 255 79 45 62 30 3669164 256 83 52 67.5 35.5 3704.5
165 257 90 53 71.5 39.5 3744166 258 94 59 76.5 44.5 3788.5167 259 95 63 79 47 3835.5168 260 89 53 71 39 3874.5
169 261 87 54 70.5 38.5 3913170 262 89 54 71.5 39.5 3952.5171 263 89 58 73.5 41.5 3994172 264 90 56 73 41 4035173 265 87 57 72 40 4075174 266 83 48 65.5 33.5 4108.5175 267 88 52 70 38 4146.5176 268 90 59 74.5 42.5 4189177 269 87 59 73 41 4230178 270 85 57 71 39 4269179 271 87 56 71.5 39.5 4308.5180 272 86 56 71 39 4347.5181 273 80 56 68 36 4383.5
182 274 81 51 66 34 4417.5183 275 87 56 71.5 39.5 4457184 276 89 55 72 40 4497185 277 89 57 73 41 4538
186 278 88 58 73 41 4579187 279 93 62 77.5 45.5 4624.5188 280 94 60 77 45 4669.5189 281 95 56 75.5 43.5 4713
190 282 93 60 76.5 44.5 4757.5191 283 91 60 75.5 43.5 4801192 284 92 59 75.5 43.5 4844.5193 285 96 56 76 44 4888.5
194 286 98 65 81.5 49.5 4938195 287 97 67 82 50 4988196 288 99 68 83.5 51.5 5039.5197 289 93 64 78.5 46.5 5086198 290 94 64 79 47 5133199 291 92 62 77 45 5178200 292 92 63 77.5 45.5 5223.5201 293 87 62 74.5 42.5 5266202 294 88 64 76 44 5310203 295 92 62 77 45 5355204 296 93 67 80 48 5403205 297 86 65 75.5 43.5 5446.5206 298 86 57 71.5 39.5 5486
207 299 86 57 71.5 39.5 5525.5208 300 86 58 72 40 5565.5209 301 83 56 69.5 37.5 5603210 302 87 57 72 40 5643
211 303 91 57 74 42 5685212 304 94 64 79 47 5732213 305 95 61 78 46 5778214 306 95 68 81.5 49.5 5827.5
215 307 84 58 71 39 5866.5216 308 87 59 73 41 5907.5217 309 94 65 79.5 47.5 5955218 310 86 61 73.5 41.5 5996.5
219 311 87 58 72.5 40.5 6037220 312 92 54 73 41 6078221 313 94 63 78.5 46.5 6124.5222 314 95 63 79 47 6171.5223 315 93 63 78 46 6217.5224 316 95 64 79.5 47.5 6265225 317 96 63 79.5 47.5 6312.5226 318 93 62 77.5 45.5 6358227 319 88 58 73 41 6399228 320 89 59 74 42 6441229 321 86 59 72.5 40.5 6481.5230 322 82 57 69.5 37.5 6519231 323 82 56 69 37 6556
232 324 79 59 69 37 6593233 325 82 55 68.5 36.5 6629.5234 326 82 55 68.5 36.5 6666235 327 88 58 73 41 6707
236 328 82 55 68.5 36.5 6743.5237 329 81 55 68 36 6779.5238 330 84 63 73.5 41.5 6821239 331 88 55 71.5 39.5 6860.5
240 332 80 52 66 34 6894.5241 333 87 53 70 38 6932.5242 334 90 55 72.5 40.5 6973243 335 90 55 72.5 40.5 7013.5
244 336 91 57 74 42 7055.5
245 337 90 57 73.5 41.5 7097246 338 90 55 72.5 40.5 7137.5247 339 85 61 73 41 7178.5248 340 66 40 53 21 7199.5
249 341 73 43 58 26 7225.5250 342 81 50 65.5 33.5 7259251 343 83 53 68 36 7295252 344 86 54 70 38 7333
253 345 88 53 70.5 38.5 7371.5254 346 86 61 73.5 41.5 7413255 347 89 58 73.5 41.5 7454.5256 348 88 57 72.5 40.5 7495257 349 87 56 71.5 39.5 7534.5258 350 85 55 70 38 7572.5259 351 79 47 63 31 7603.5260 352 84 51 67.5 35.5 7639261 353 85 55 70 38 7677262 354 80 61 70.5 38.5 7715.5263 355 63 48 55.5 23.5 7739264 356 63 47 55 23 7762265 357 51 39 45 13 7775
266 358 60 34 47 15 7790267 359 68 39 53.5 21.5 7811.5268 360 74 45 59.5 27.5 7839269 361 74 46 60 28 7867 87 1166 length of freeze (day) 51270 362 75 47 61 29 7896 138 1033 frost depth (oF-day)133
271 363 79 49 64 32 7928 average temperature 53.9272 364 77 48 62.5 30.5 7958.5273 365 58 45 51.5 19.5 7978274 366 61 44 52.5 20.5 7998.5
2005-2006 day of frost year degree cumulative
day of year (consecutive date) max. temp. min. temp avg. temp day (
oF) degree day (
oF)274 1 78 50 64 32 32
275 2 80 51 65.5 33.5 65.5276 3 80 52 66 34 99.5277 4 72 57 64.5 32.5 132278 5 66 36 51 19 151
279 6 70 46 58 26 177280 7 74 42 58 26 203281 8 77 39 58 26 229282 9 65 47 56 24 253
283 10 53 40 46.5 14.5 267.5284 11 61 34 47.5 15.5 283285 12 65 39 52 20 303286 13 69 42 55.5 23.5 326.5
287 14 73 41 57 25 351.5288 15 69 45 57 25 376.5289 16 68 46 57 25 401.5290 17 69 45 57 25 426.5
291 18 65 45 55 23 449.5292 19 55 39 47 15 464.5293 20 65 38 51.5 19.5 484294 21 69 42 55.5 23.5 507.5295 22 68 41 54.5 22.5 530296 23 71 43 57 25 555297 24 68 41 54.5 22.5 577.5298 25 70 43 56.5 24.5 602299 26 68 40 54 22 624300 27 66 42 54 22 646301 28 58 43 50.5 18.5 664.5302 29 59 41 50 18 682.5303 30 61 37 49 17 699.5
304 31 59 33 46 14 713.5305 32 63 35 49 17 730.5306 33 61 38 49.5 17.5 748307 34 67 44 55.5 23.5 771.5
308 35 63 37 50 18 789.5309 36 59 35 47 15 804.5310 37 62 35 48.5 16.5 821311 38 61 43 52 20 841
312 39 59 41 50 18 859313 40 67 43 55 23 882314 41 71 43 57 25 907315 42 56 41 48.5 16.5 923.5
316 43 58 33 45.5 13.5 937317 44 56 35 45.5 13.5 950.5318 45 58 36 47 15 965.5319 46 44 22 33 1 966.5320 47 50 23 36.5 4.5 971321 48 56 28 42 10 981322 49 54 27 40.5 8.5 989.5323 50 53 29 41 9 998.5324 51 55 28 41.5 9.5 1008325 52 57 29 43 11 1019326 53 59 29 44 12 1031327 54 54 29 41.5 9.5 1040.5328 55 55 29 42 10 1050.5
329 56 55 27 41 9 1059.5330 57 52 29 40.5 8.5 1068331 58 36 20 28 -4 1064332 59 39 14 26.5 -5.5 1058.5
333 60 41 19 30 -2 1056.5334 61 50 26 38 6 1062.5335 62 47 28 37.5 5.5 1068336 63 54 32 43 11 1079
337 64 43 23 33 1 1080338 65 34 15 24.5 -7.5 1072.5339 66 32 9 20.5 -11.5 1061340 67 36 14 25 -7 1054
341 68 29 8 18.5 -13.5 1040.5342 69 31 2 16.5 -15.5 1025343 70 42 12 27 -5 1020344 71 45 19 32 0 1020345 72 46 19 32.5 0.5 1020.5346 73 44 21 32.5 0.5 1021
1020
1040
1060
1080
1100
1120
1140
1160
1180
1200
1220
0 50 100 150 200
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day of frost year
Blanding, UT
2003-2004
347 74 47 24 35.5 3.5 1024.5
348 75 40 16 28 -4 1020.5349 76 42 12 27 -5 1015.5350 77 32 13 22.5 -9.5 1006351 78 40 15 27.5 -4.5 1001.5
352 79 41 22 31.5 -0.5 1001353 80 49 28 38.5 6.5 1007.5354 81 55 30 42.5 10.5 1018355 82 54 31 42.5 10.5 1028.5
356 83 52 29 40.5 8.5 1037357 84 60 33 46.5 14.5 1051.5358 85 58 29 43.5 11.5 1063359 86 53 33 43 11 1074360 87 53 31 42 10 1084361 88 53 27 40 8 1092362 89 55 28 41.5 9.5 1101.5363 90 49 28 38.5 6.5 1108364 91 43 22 32.5 0.5 1108.5365 92 47 30 38.5 6.5 11151 93 51 29 40 8 11232 94 56 31 43.5 11.5 1134.53 95 52 36 44 12 1146.5
4 96 50 27 38.5 6.5 11535 97 56 24 40 8 11616 98 54 27 40.5 8.5 1169.57 99 54 29 41.5 9.5 1179
8 100 51 28 39.5 7.5 1186.59 101 46 16 31 -1 1185.510 102 45 20 32.5 0.5 118611 103 47 20 33.5 1.5 1187.5
12 104 44 25 34.5 2.5 119013 105 48 21 34.5 2.5 1192.514 106 53 27 40 8 1200.515 107 45 28 36.5 4.5 1205
16 108 41 19 30 -2 120317 109 43 15 29 -3 120018 110 46 23 34.5 2.5 1202.519 111 42 25 33.5 1.5 120420 112 41 16 28.5 -3.5 1200.521 113 40 17 28.5 -3.5 119722 114 44 17 30.5 -1.5 1195.523 115 45 18 31.5 -0.5 119524 116 50 17 33.5 1.5 1196.525 117 44 31 37.5 5.5 120226 118 43 24 33.5 1.5 1203.527 119 35 20 27.5 -4.5 119928 120 37 19 28 -4 1195
29 121 45 21 33 1 119630 122 48 26 37 5 120131 123 52 29 40.5 8.5 1209.532 124 52 29 40.5 8.5 1218
33 125 53 32 42.5 10.5 1228.534 126 50 26 38 6 1234.535 127 48 26 37 5 1239.536 128 45 24 34.5 2.5 1242
37 129 50 19 34.5 2.5 1244.538 130 54 25 39.5 7.5 125239 131 59 29 44 12 126440 132 58 28 43 11 1275
41 133 43 20 31.5 -0.5 1274.542 134 45 13 29 -3 1271.543 135 51 22 36.5 4.5 127644 136 55 24 39.5 7.5 1283.545 137 49 26 37.5 5.5 128946 138 57 28 42.5 10.5 1299.547 139 37 13 25 -7 1292.548 140 44 22 33 1 1293.549 141 50 23 36.5 4.5 129850 142 45 22 33.5 1.5 1299.551 143 43 24 33.5 1.5 130152 144 46 22 34 2 130353 145 48 17 32.5 0.5 1303.5
54 146 55 23 39 7 1310.555 147 57 28 42.5 10.5 132156 148 58 32 45 13 133457 149 58 30 44 12 1346
58 150 64 36 50 18 136459 151 59 42 50.5 18.5 1382.560 152 57 38 47.5 15.5 139861 153 59 38 48.5 16.5 1414.5
62 154 65 34 49.5 17.5 143263 155 57 37 47 15 144764 156 62 21 41.5 9.5 1456.565 157 62 40 51 19 1475.5
66 158 61 33 47 15 1490.567 159 39 27 33 1 1491.568 160 39 22 30.5 -1.5 149069 161 35 21 28 -4 148670 162 31 20 25.5 -6.5 1479.571 163 33 23 28 -4 1475.572 164 38 14 26 -6 1469.573 165 45 19 32 0 1469.574 166 47 30 38.5 6.5 147675 167 53 30 41.5 9.5 1485.576 168 58 36 47 15 1500.577 169 54 31 42.5 10.5 151178 170 47 25 36 4 1515
79 171 50 23 36.5 4.5 1519.580 172 41 29 35 3 1522.581 173 55 29 42 10 1532.582 174 58 29 43.5 11.5 1544
83 175 60 33 46.5 14.5 1558.584 176 65 37 51 19 1577.585 177 57 35 46 14 1591.586 178 59 32 45.5 13.5 1605
87 179 59 40 49.5 17.5 1622.588 180 48 35 41.5 9.5 163289 181 51 30 40.5 8.5 1640.590 182 60 29 44.5 12.5 1653
91 183 56 41 48.5 16.5 1669.5
92 184 59 33 46 14 1683.593 185 70 41 55.5 23.5 170794 186 71 50 60.5 28.5 1735.595 187 60 33 46.5 14.5 1750
96 188 53 30 41.5 9.5 1759.597 189 65 33 49 17 1776.598 190 70 39 54.5 22.5 179999 191 73 41 57 25 1824
100 192 69 40 54.5 22.5 1846.5101 193 63 39 51 19 1865.5102 194 74 43 - - 1865.5103 195 77 45 61 29 1894.5104 196 76 46 61 29 1923.5105 197 65 39 52 20 1943.5106 198 71 39 55 23 1966.5107 199 70 36 53 21 1987.5108 200 54 27 40.5 8.5 1996109 201 61 27 44 12 2008110 202 66 29 47.5 15.5 2023.5111 203 73 40 56.5 24.5 2048112 204 80 48 64 32 2080
113 205 72 44 58 26 2106114 206 61 35 48 16 2122115 207 67 37 52 20 2142116 208 74 42 58 26 2168
117 209 78 40 59 27 2195118 210 69 51 60 28 2223119 211 71 39 55 23 2246120 212 76 45 60.5 28.5 2274.5
121 213 78 45 61.5 29.5 2304122 214 76 53 64.5 32.5 2336.5123 215 80 47 63.5 31.5 2368124 216 76 49 62.5 30.5 2398.5
125 217 74 47 60.5 28.5 2427126 218 73 42 57.5 25.5 2452.5127 219 77 49 63 31 2483.5128 220 80 48 64 32 2515.5129 221 62 42 52 20 2535.5130 222 70 38 54 22 2557.5131 223 76 47 61.5 29.5 2587132 224 83 48 65.5 33.5 2620.5133 225 88 55 71.5 39.5 2660134 226 86 64 75 43 2703135 227 81 57 69 37 2740136 228 85 50 67.5 35.5 2775.5137 229 88 56 72 40 2815.5
138 230 90 55 72.5 40.5 2856139 231 87 58 72.5 40.5 2896.5140 232 88 56 72 40 2936.5141 233 87 55 71 39 2975.5
142 234 81 52 66.5 34.5 3010143 235 76 42 59 27 3037144 236 86 53 69.5 37.5 3074.5145 237 92 56 74 42 3116.5
146 238 87 55 71 39 3155.5147 239 81 54 67.5 35.5 3191148 240 70 47 58.5 26.5 3217.5149 241 70 35 52.5 20.5 3238
150 242 80 46 63 31 3269151 243 85 48 66.5 34.5 3303.5152 244 90 55 72.5 40.5 3344153 245 92 56 74 42 3386154 246 94 59 76.5 44.5 3430.5155 247 97 60 78.5 46.5 3477156 248 97 60 78.5 46.5 3523.5157 249 99 64 81.5 49.5 3573158 250 93 64 78.5 46.5 3619.5159 251 70 54 62 30 3649.5160 252 83 61 72 40 3689.5161 253 88 62 75 43 3732.5162 254 89 56 72.5 40.5 3773
163 255 92 54 73 41 3814164 256 90 55 72.5 40.5 3854.5165 257 92 59 75.5 43.5 3898166 258 77 55 66 34 3932
167 259 78 48 63 31 3963168 260 87 53 70 38 4001169 261 92 57 74.5 42.5 4043.5170 262 96 62 79 47 4090.5
171 263 93 62 77.5 45.5 4136172 264 93 61 77 45 4181173 265 95 65 80 48 4229174 266 93 64 78.5 46.5 4275.5
175 267 96 65 80.5 48.5 4324176 268 93 61 77 45 4369177 269 89 72 80.5 48.5 4417.5178 270 89 55 72 40 4457.5179 271 91 57 74 42 4499.5180 272 88 59 73.5 41.5 4541181 273 93 60 76.5 44.5 4585.5182 274 95 66 80.5 48.5 4634183 275 92 63 77.5 45.5 4679.5184 276 88 62 75 43 4722.5185 277 93 66 79.5 47.5 4770186 278 91 63 77 45 4815187 279 85 61 73 41 4856
188 280 75 59 67 35 4891189 281 75 59 67 35 4926190 282 82 57 69.5 37.5 4963.5191 283 85 57 71 39 5002.5
192 284 90 59 74.5 42.5 5045193 285 93 64 78.5 46.5 5091.5194 286 97 65 81 49 5140.5195 287 98 65 81.5 49.5 5190
196 288 97 68 82.5 50.5 5240.5197 289 101 66 83.5 51.5 5292198 290 101 69 85 53 5345199 291 96 69 82.5 50.5 5395.5
200 292 97 64 80.5 48.5 5444
201 293 95 66 80.5 48.5 5492.5202 294 98 66 82 50 5542.5203 295 94 65 79.5 47.5 5590204 296 97 63 80 48 5638
205 297 98 65 81.5 49.5 5687.5206 298 98 65 81.5 49.5 5737207 299 97 66 81.5 49.5 5786.5208 300 93 66 79.5 47.5 5834
209 301 90 61 75.5 43.5 5877.5210 302 92 62 77 45 5922.5211 303 91 63 77 45 5967.5212 304 90 63 76.5 44.5 6012213 305 90 61 75.5 43.5 6055.5214 306 82 66 74 42 6097.5215 307 90 59 74.5 42.5 6140216 308 81 58 69.5 37.5 6177.5217 309 84 54 69 37 6214.5218 310 88 59 73.5 41.5 6256219 311 88 59 73.5 41.5 6297.5220 312 91 61 76 44 6341.5221 313 88 63 75.5 43.5 6385
222 314 89 56 72.5 40.5 6425.5223 315 89 59 74 42 6467.5224 316 85 60 72.5 40.5 6508225 317 88 58 73 41 6549
226 318 89 61 75 43 6592227 319 88 59 73.5 41.5 6633.5228 320 87 58 72.5 40.5 6674229 321 89 58 73.5 41.5 6715.5
230 322 93 62 77.5 45.5 6761231 323 91 61 76 44 6805232 324 89 61 75 43 6848233 325 90 59 74.5 42.5 6890.5
234 326 86 60 73 41 6931.5235 327 89 57 73 41 6972.5236 328 88 57 72.5 40.5 7013237 329 82 56 69 37 7050238 330 84 58 71 39 7089239 331 80 50 65 33 7122240 332 84 48 66 34 7156241 333 87 54 70.5 38.5 7194.5242 334 88 57 72.5 40.5 7235243 335 87 59 73 41 7276244 336 88 57 72.5 40.5 7316.5245 337 86 59 72.5 40.5 7357246 338 83 52 67.5 35.5 7392.5
247 339 83 54 68.5 36.5 7429248 340 81 55 68 36 7465249 341 80 56 68 36 7501250 342 68 51 59.5 27.5 7528.5
251 343 69 50 59.5 27.5 7556252 344 76 49 62.5 30.5 7586.5253 345 72 48 60 28 7614.5254 346 78 49 63.5 31.5 7646
255 347 84 54 69 37 7683256 348 82 54 68 36 7719257 349 75 50 62.5 30.5 7749.5258 350 72 50 61 29 7778.5
259 351 66 47 56.5 24.5 7803260 352 63 38 50.5 18.5 7821.5261 353 70 34 52 20 7841.5262 354 75 41 58 26 7867.5263 355 67 40 53.5 21.5 7889264 356 65 36 50.5 18.5 7907.5265 357 59 36 47.5 15.5 7923266 358 59 32 45.5 13.5 7936.5267 359 67 35 51 19 7955.5268 360 73 42 57.5 25.5 7981269 361 78 47 62.5 30.5 8011.5 64 1080 length of freeze (day) 15
270 362 78 47 62.5 30.5 8042 79 1001 frost depth (oF-day)79271 363 80 49 64.5 32.5 8074.5 average temperature 54.4272 364 80 49 64.5 32.5 8107
273 365 81 50 65.5 33.5 8140.5
2006-2007
day of frost year degree cumulative
day of year (consecutive date) max. temp. min. temp avg. temp day (
oF) degree day (
oF)274 1 78 52 65 33 33275 2 79 52 65.5 33.5 66.5276 3 72 47 59.5 27.5 94277 4 78 50 64 32 126278 5 67 52 59.5 27.5 153.5279 6 63 50 56.5 24.5 178280 7 68 49 58.5 26.5 204.5281 8 62 47 54.5 22.5 227282 9 58 40 49 17 244283 10 61 40 50.5 18.5 262.5284 11 66 41 53.5 21.5 284285 12 68 39 53.5 21.5 305.5
286 13 68 39 53.5 21.5 327287 14 57 45 51 19 346288 15 64 40 52 20 366289 16 62 37 49.5 17.5 383.5
290 17 56 36 46 14 397.5291 18 53 30 41.5 9.5 407292 19 55 29 42 10 417293 20 62 34 48 16 433
294 21 58 34 46 14 447295 22 60 29 44.5 12.5 459.5296 23 62 34 48 16 475.5297 24 63 37 50 18 493.5
298 25 57 31 44 12 505.5299 26 51 29 40 8 513.5300 27 64 29 46.5 14.5 528301 28 62 34 48 16 544302 29 61 35 48 16 560303 30 61 35 48 16 576
950
1000
1050
1100
1150
1200
0 20 40 60 80 100 120
fr
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day of frost year
Blanding, UT
2005-2006
304 31 59 33 46 14 590
305 32 58 34 46 14 604306 33 59 34 46.5 14.5 618.5307 34 59 36 47.5 15.5 634308 35 63 39 51 19 653
309 36 59 36 47.5 15.5 668.5310 37 63 34 48.5 16.5 685311 38 69 40 54.5 22.5 707.5312 39 67 40 53.5 21.5 729
313 40 65 37 51 19 748314 41 54 31 42.5 10.5 758.5315 42 48 28 38 6 764.5316 43 49 26 37.5 5.5 770317 44 44 26 35 3 773318 45 52 30 41 9 782319 46 53 22 37.5 5.5 787.5320 47 51 26 38.5 6.5 794321 48 57 33 45 13 807322 49 61 33 47 15 822323 50 58 33 45.5 13.5 835.5324 51 59 35 47 15 850.5325 52 59 33 46 14 864.5
326 53 59 33 46 14 878.5327 54 53 36 44.5 12.5 891328 55 55 34 44.5 12.5 903.5329 56 55 35 45 13 916.5
330 57 50 29 39.5 7.5 924331 58 43 26 34.5 2.5 926.5332 59 45 22 33.5 1.5 928333 60 27 12 19.5 -12.5 915.5
334 61 36 6 21 -11 904.5335 62 38 12 25 -7 897.5336 63 35 14 24.5 -7.5 890337 64 36 11 23.5 -8.5 881.5
338 65 42 15 28.5 -3.5 878339 66 44 18 31 -1 877340 67 50 22 36 4 881341 68 50 25 37.5 5.5 886.5342 69 50 26 38 6 892.5343 70 47 26 36.5 4.5 897344 71 41 26 33.5 1.5 898.5345 72 46 26 36 4 902.5346 73 42 21 31.5 -0.5 902347 74 46 24 35 3 905348 75 47 27 37 5 910349 76 47 29 38 6 916350 77 48 32 40 8 924
351 78 44 26 35 3 927352 79 43 23 33 1 928353 80 33 22 27.5 -4.5 923.5354 81 38 19 28.5 -3.5 920
355 82 41 19 30 -2 918356 83 36 19 27.5 -4.5 913.5357 84 41 16 28.5 -3.5 910358 85 47 19 33 1 911
359 86 42 17 29.5 -2.5 908.5360 87 44 23 33.5 1.5 910361 88 42 28 35 3 913362 89 47 32 39.5 7.5 920.5
363 90 45 26 35.5 3.5 924364 91 53 24 38.5 6.5 930.5365 92 42 23 32.5 0.5 9311 93 46 22 34 2 9332 94 45 22 33.5 1.5 934.53 95 42 23 32.5 0.5 9354 96 44 24 34 2 9375 97 36 19 27.5 -4.5 932.56 98 31 11 21 -11 921.57 99 39 14 26.5 -5.5 9168 100 49 17 33 1 9179 101 47 23 35 3 92010 102 45 24 34.5 2.5 922.5
11 103 53 29 41 9 931.512 104 42 26 34 2 933.513 105 28 21 24.5 -7.5 92614 106 27 2 14.5 -17.5 908.5
15 107 30 1 15.5 -16.5 89216 108 34 8 21 -11 88117 109 35 10 22.5 -9.5 871.518 110 42 13 27.5 -4.5 867
19 111 43 15 29 -3 86420 112 37 21 29 -3 86121 113 32 19 25.5 -6.5 854.522 114 39 15 27 -5 849.5
23 115 41 18 29.5 -2.5 84724 116 41 16 28.5 -3.5 843.525 117 45 20 32.5 0.5 84426 118 45 20 32.5 0.5 844.527 119 43 23 33 1 845.528 120 46 24 35 3 848.529 121 46 22 34 2 850.530 122 42 21 31.5 -0.5 85031 123 33 17 25 -7 84332 124 31 11 21 -11 83233 125 31 8 19.5 -12.5 819.534 126 39 13 26 -6 813.535 127 48 22 35 3 816.5
36 128 52 27 39.5 7.5 82437 129 51 29 40 8 83238 130 54 32 43 11 84339 131 55 32 43.5 11.5 854.5
40 132 52 33 42.5 10.5 86541 133 54 37 45.5 13.5 878.542 134 47 34 40.5 8.5 88743 135 56 30 43 11 898
44 136 44 31 37.5 5.5 903.545 137 44 24 34 2 905.546 138 47 23 35 3 908.547 139 58 25 41.5 9.5 918
48 140 57 30 43.5 11.5 929.5
49 141 49 29 39 7 936.550 142 54 34 44 12 948.551 143 49 25 37 5 953.552 144 54 28 41 9 962.5
53 145 60 31 45.5 13.5 97654 146 45 23 34 2 97855 147 43 19 31 -1 97756 148 44 20 32 0 977
57 149 54 24 39 7 98458 150 52 29 40.5 8.5 992.559 151 39 19 29 -3 989.560 152 39 15 27 -5 984.561 153 40 14 27 -5 979.562 154 40 9 24.5 -7.5 97263 155 50 19 34.5 2.5 974.564 156 60 28 44 12 986.565 157 57 31 44 12 998.566 158 62 31 46.5 14.5 101367 159 61 36 48.5 16.5 1029.568 160 62 34 48 16 1045.569 161 63 40 51.5 19.5 1065
70 162 65 34 49.5 17.5 1082.571 163 72 40 56 24 1106.572 164 77 42 59.5 27.5 113473 165 75 42 58.5 26.5 1160.5
74 166 72 45 58.5 26.5 118775 167 73 37 55 23 121076 168 76 42 59 27 123777 169 76 42 59 27 1264
78 170 72 43 57.5 25.5 1289.579 171 70 40 55 23 1312.580 172 65 44 54.5 22.5 133581 173 60 41 50.5 18.5 1353.5
82 174 58 40 49 17 1370.583 175 57 37 47 15 1385.584 176 63 37 50 18 1403.585 177 69 39 54 22 1425.586 178 67 36 51.5 19.5 144587 179 42 24 33 1 144688 180 42 21 31.5 -0.5 1445.589 181 54 21 37.5 5.5 145190 182 65 28 46.5 14.5 1465.591 183 71 38 54.5 22.5 148892 184 73 42 57.5 25.5 1513.593 185 75 40 57.5 25.5 153994 186 77 43 60 28 1567
95 187 74 47 60.5 28.5 1595.596 188 73 44 58.5 26.5 162297 189 70 47 58.5 26.5 1648.598 190 66 43 54.5 22.5 1671
99 191 64 37 50.5 18.5 1689.5100 192 52 32 42 10 1699.5101 193 52 26 39 7 1706.5102 194 52 32 42 10 1716.5
103 195 58 32 45 13 1729.5104 196 62 31 46.5 14.5 1744105 197 67 41 54 22 1766106 198 65 38 51.5 19.5 1785.5
107 199 65 35 50 18 1803.5108 200 69 36 52.5 20.5 1824109 201 56 24 40 8 1832110 202 63 34 48.5 16.5 1848.5111 203 59 38 48.5 16.5 1865112 204 58 36 47 15 1880113 205 49 34 41.5 9.5 1889.5114 206 60 34 47 15 1904.5115 207 68 41 54.5 22.5 1927116 208 70 43 56.5 24.5 1951.5117 209 78 45 61.5 29.5 1981118 210 80 47 63.5 31.5 2012.5119 211 81 50 65.5 33.5 2046
120 212 85 49 67 35 2081121 213 83 50 66.5 34.5 2115.5122 214 59 46 52.5 20.5 2136123 215 69 44 56.5 24.5 2160.5
124 216 63 40 51.5 19.5 2180125 217 45 32 38.5 6.5 2186.5126 218 53 31 42 10 2196.5127 219 67 33 50 18 2214.5
128 220 73 36 54.5 22.5 2237129 221 78 43 60.5 28.5 2265.5130 222 82 48 65 33 2298.5131 223 85 52 68.5 36.5 2335
132 224 86 55 70.5 38.5 2373.5133 225 85 59 72 40 2413.5134 226 85 52 68.5 36.5 2450135 227 84 50 67 35 2485136 228 81 49 65 33 2518137 229 79 46 62.5 30.5 2548.5138 230 80 49 64.5 32.5 2581139 231 83 50 66.5 34.5 2615.5140 232 81 50 65.5 33.5 2649141 233 79 50 64.5 32.5 2681.5142 234 67 39 53 21 2702.5143 235 57 38 47.5 15.5 2718144 236 66 33 49.5 17.5 2735.5
145 237 77 46 61.5 29.5 2765146 238 80 49 64.5 32.5 2797.5147 239 85 53 69 37 2834.5148 240 84 51 67.5 35.5 2870
149 241 84 52 68 36 2906150 242 79 43 61 29 2935151 243 85 48 66.5 34.5 2969.5152 244 83 53 68 36 3005.5
153 245 86 56 71 39 3044.5154 246 87 56 71.5 39.5 3084155 247 88 59 73.5 41.5 3125.5156 248 88 58 73 41 3166.5
157 249 72 46 59 27 3193.5
158 250 69 35 52 20 3213.5159 251 79 47 63 31 3244.5160 252 86 50 68 36 3280.5161 253 88 53 70.5 38.5 3319
162 254 82 55 68.5 36.5 3355.5163 255 77 49 63 31 3386.5164 256 85 49 67 35 3421.5165 257 92 57 74.5 42.5 3464
166 258 96 62 79 47 3511167 259 97 63 80 48 3559168 260 92 61 76.5 44.5 3603.5169 261 92 59 75.5 43.5 3647170 262 93 61 77 45 3692171 263 95 63 79 47 3739172 264 97 63 80 48 3787173 265 96 62 79 47 3834174 266 97 63 80 48 3882175 267 95 61 78 46 3928176 268 92 60 76 44 3972177 269 95 60 77.5 45.5 4017.5178 270 93 60 76.5 44.5 4062
179 271 93 62 77.5 45.5 4107.5180 272 95 62 78.5 46.5 4154181 273 95 63 79 47 4201182 274 98 62 80 48 4249
183 275 100 51 75.5 43.5 4292.5184 276 101 63 82 50 4342.5185 277 100 64 82 50 4392.5186 278 95 64 79.5 47.5 4440
187 279 93 65 79 47 4487188 280 92 62 77 45 4532189 281 97 64 80.5 48.5 4580.5190 282 93 64 78.5 46.5 4627
191 283 99 65 82 50 4677192 284 92 68 80 48 4725193 285 87 63 75 43 4768194 286 90 62 76 44 4812195 287 96 60 78 46 4858196 288 95 60 77.5 45.5 4903.5197 289 97 61 79 47 4950.5198 290 98 69 83.5 51.5 5002199 291 97 67 82 50 5052200 292 97 65 81 49 5101201 293 90 61 75.5 43.5 5144.5202 294 91 67 79 47 5191.5203 295 92 63 77.5 45.5 5237
204 296 93 65 79 47 5284205 297 93 62 77.5 45.5 5329.5206 298 92 62 77 45 5374.5207 299 88 64 76 44 5418.5
208 300 92 61 76.5 44.5 5463209 301 87 59 73 41 5504210 302 92 60 76 44 5548211 303 89 60 74.5 42.5 5590.5
212 304 90 61 75.5 43.5 5634213 305 93 64 78.5 46.5 5680.5214 306 88 61 74.5 42.5 5723215 307 84 63 73.5 41.5 5764.5
216 308 84 64 74 42 5806.5217 309 85 62 73.5 41.5 5848218 310 85 63 74 42 5890219 311 88 59 73.5 41.5 5931.5220 312 90 59 74.5 42.5 5974221 313 93 63 78 46 6020222 314 92 62 77 45 6065223 315 95 61 78 46 6111224 316 97 62 79.5 47.5 6158.5225 317 97 66 81.5 49.5 6208226 318 93 65 79 47 6255227 319 89 62 75.5 43.5 6298.5228 320 92 62 77 45 6343.5
229 321 91 64 77.5 45.5 6389230 322 92 64 78 46 6435231 323 95 64 79.5 47.5 6482.5232 324 92 62 77 45 6527.5
233 325 95 61 78 46 6573.5234 326 95 62 78.5 46.5 6620235 327 93 57 75 43 6663236 328 94 63 78.5 46.5 6709.5
237 329 95 64 79.5 47.5 6757238 330 93 62 77.5 45.5 6802.5239 331 74 57 65.5 33.5 6836240 332 82 54 68 36 6872
241 333 90 59 74.5 42.5 6914.5242 334 89 60 74.5 42.5 6957243 335 92 63 77.5 45.5 7002.5244 336 89 62 75.5 43.5 7046245 337 90 59 74.5 42.5 7088.5246 338 90 59 74.5 42.5 7131247 339 88 59 73.5 41.5 7172.5248 340 88 58 73 41 7213.5249 341 88 61 74.5 42.5 7256250 342 84 58 71 39 7295251 343 88 57 72.5 40.5 7335.5252 344 89 60 74.5 42.5 7378253 345 84 60 72 40 7418
254 346 87 59 73 41 7459255 347 88 55 71.5 39.5 7498.5256 348 89 57 73 41 7539.5257 349 87 60 73.5 41.5 7581
258 350 88 60 74 42 7623259 351 78 59 68.5 36.5 7659.5260 352 75 53 64 32 7691.5261 353 75 48 61.5 29.5 7721
262 354 80 50 65 33 7754263 355 80 55 67.5 35.5 7789.5264 356 81 54 67.5 35.5 7825265 357 80 55 67.5 35.5 7860.5
0
200
400
600
800
1000
1200
0 50 100 150 200
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day of frost year
Blanding, UT
2006-2007
266 358 66 50 58 26 7886.5
267 359 64 44 54 22 7908.5268 360 68 41 54.5 22.5 7931 97 932.5 length of freeze (day) 30
269 361 72 44 58 26 7957 127 816.5 frost depth (oF-day)116270 362 74 47 60.5 28.5 7985.5 average temperature 54.1271 363 74 53 63.5 31.5 8017
272 364 74 41 57.5 25.5 8042.5273 365 66 32 49 17 8059.5
2007-2008 day of frost year degree cumulative
day of year (consecutive date) max. temp. min. temp avg. temp day (
oF) degree day (
oF)274 1 67 46 56.5 24.5 24.5275 2 67 44 55.5 23.5 48276 3 72 45 58.5 26.5 74.5
277 4 78 49 63.5 31.5 106278 5 72 52 62 30 136279 6 64 48 56 24 160280 7 57 32 44.5 12.5 172.5
281 8 67 33 50 18 190.5282 9 75 45 60 28 218.5283 10 77 53 65 33 251.5284 11 75 50 62.5 30.5 282
285 12 71 50 60.5 28.5 310.5286 13 67 47 57 25 335.5287 14 66 40 53 21 356.5288 15 66 40 53 21 377.5
289 16 67 44 55.5 23.5 401290 17 59 40 49.5 17.5 418.5291 18 60 33 46.5 14.5 433292 19 66 39 52.5 20.5 453.5293 20 71 44 57.5 25.5 479294 21 56 31 43.5 11.5 490.5295 22 58 32 45 13 503.5296 23 63 36 49.5 17.5 521297 24 68 38 53 21 542298 25 71 38 54.5 22.5 564.5299 26 73 44 58.5 26.5 591300 27 71 44 57.5 25.5 616.5301 28 71 44 57.5 25.5 642
302 29 68 47 57.5 25.5 667.5303 30 71 44 57.5 25.5 693304 31 66 43 54.5 22.5 715.5305 32 64 42 53 21 736.5
306 33 64 40 52 20 756.5307 34 66 36 51 19 775.5308 35 64 37 50.5 18.5 794309 36 68 37 52.5 20.5 814.5
310 37 65 40 52.5 20.5 835311 38 68 40 54 22 857312 39 67 44 55.5 23.5 880.5313 40 67 43 55 23 903.5
314 41 65 45 55 23 926.5315 42 61 40 50.5 18.5 945316 43 67 43 55 23 968317 44 64 40 52 20 988318 45 66 42 54 22 1010319 46 61 35 48 16 1026320 47 64 37 50.5 18.5 1044.5321 48 65 39 52 20 1064.5322 49 62 40 51 19 1083.5323 50 65 38 51.5 19.5 1103324 51 61 41 51 19 1122325 52 41 24 32.5 0.5 1122.5326 53 42 19 30.5 -1.5 1121
327 54 41 30 35.5 3.5 1124.5328 55 45 22 33.5 1.5 1126329 56 44 20 32 0 1126330 57 51 28 39.5 7.5 1133.5
331 58 47 24 35.5 3.5 1137332 59 42 21 31.5 -0.5 1136.5333 60 47 20 33.5 1.5 1138334 61 45 32 38.5 6.5 1144.5
335 62 46 31 38.5 6.5 1151336 63 41 26 33.5 1.5 1152.5337 64 50 27 38.5 6.5 1159338 65 50 28 39 7 1166
339 66 43 34 38.5 6.5 1172.5340 67 43 32 37.5 5.5 1178341 68 45 35 40 8 1186342 69 40 25 32.5 0.5 1186.5343 70 38 34 36 4 1190.5344 71 36 27 31.5 -0.5 1190345 72 33 19 26 -6 1184346 73 36 17 26.5 -5.5 1178.5347 74 32 20 26 -6 1172.5348 75 34 12 23 -9 1163.5349 76 31 10 20.5 -11.5 1152350 77 33 15 24 -8 1144351 78 41 17 29 -3 1141
352 79 37 23 30 -2 1139353 80 38 25 31.5 -0.5 1138.5354 81 38 24 31 -1 1137.5355 82 35 26 30.5 -1.5 1136
356 83 32 14 23 -9 1127357 84 40 17 28.5 -3.5 1123.5358 85 39 19 29 -3 1120.5359 86 33 21 27 -5 1115.5
360 87 30 12 21 -11 1104.5361 88 26 11 18.5 -13.5 1091362 89 26 7 16.5 -15.5 1075.5363 90 30 11 20.5 -11.5 1064
364 91 37 16 26.5 -5.5 1058.5365 92 30 12 21 -11 1047.51 93 32 9 20.5 -11.5 10362 94 40 14 27 -5 10313 95 41 22 31.5 -0.5 1030.54 96 42 32 37 5 1035.5
5 97 39 35 37 5 1040.5
6 98 41 29 35 3 1043.57 99 36 18 27 -5 1038.58 100 30 13 21.5 -10.5 10289 101 35 21 28 -4 1024
10 102 33 14 23.5 -8.5 1015.511 103 35 15 25 -7 1008.512 104 35 15 25 -7 1001.513 105 37 18 27.5 -4.5 997
14 106 38 18 28 -4 99315 107 31 17 24 -8 98516 108 27 6 16.5 -15.5 969.517 109 23 1 12 -20 949.518 110 32 8 20 -12 937.519 111 30 10 20 -12 925.520 112 35 12 23.5 -8.5 91721 113 37 17 27 -5 91222 114 38 20 29 -3 90923 115 40 17 28.5 -3.5 905.524 116 35 26 30.5 -1.5 90425 117 41 18 29.5 -2.5 901.526 118 41 20 30.5 -1.5 900
27 119 34 23 28.5 -3.5 896.528 120 38 18 28 -4 892.529 121 27 6 16.5 -15.5 87730 122 32 15 23.5 -8.5 868.5
31 123 28 6 - - 868.532 124 33 14 23.5 -8.5 86033 125 33 20 26.5 -5.5 854.534 126 32 20 26 -6 848.5
35 127 39 17 28 -4 844.536 128 34 11 22.5 -9.5 83537 129 30 10 20 -12 82338 130 47 11 29 -3 820
39 131 43 20 31.5 -0.5 819.540 132 48 21 34.5 2.5 82241 133 44 24 34 2 82442 134 49 26 37.5 5.5 829.543 135 50 25 37.5 5.5 83544 136 47 26 36.5 4.5 839.545 137 41 26 33.5 1.5 84146 138 46 25 35.5 3.5 844.547 139 48 25 36.5 4.5 84948 140 41 20 30.5 -1.5 847.549 141 47 20 33.5 1.5 84950 142 45 24 34.5 2.5 851.551 143 40 30 35 3 854.5
52 144 43 31 37 5 859.553 145 36 30 33 1 860.554 146 45 30 37.5 5.5 86655 147 42 30 36 4 870
56 148 49 30 39.5 7.5 877.557 149 51 29 40 8 885.558 150 50 27 38.5 6.5 89259 151 58 34 46 14 906
60 152 59 32 45.5 13.5 919.561 153 60 34 47 15 934.562 154 46 26 36 4 938.563 155 44 24 34 2 940.5
64 156 51 25 38 6 946.565 157 41 22 31.5 -0.5 94666 158 42 20 31 -1 94567 159 48 21 34.5 2.5 947.568 160 52 32 42 10 957.569 161 52 28 40 8 965.570 162 53 30 41.5 9.5 97571 163 59 27 43 11 98672 164 59 33 46 14 100073 165 63 30 46.5 14.5 1014.574 166 54 32 43 11 1025.575 167 55 26 40.5 8.5 103476 168 49 29 39 7 1041
77 169 47 25 36 4 104578 170 54 27 40.5 8.5 1053.579 171 58 30 44 12 1065.580 172 62 34 48 16 1081.5
81 173 64 33 48.5 16.5 109882 174 56 33 44.5 12.5 1110.583 175 59 31 45 13 1123.584 176 63 32 47.5 15.5 1139
85 177 69 35 52 20 115986 178 69 38 53.5 21.5 1180.587 179 67 39 53 21 1201.588 180 63 33 48 16 1217.5
89 181 68 41 54.5 22.5 124090 182 65 36 50.5 18.5 1258.591 183 56 32 44 12 1270.592 184 59 25 42 10 1280.593 185 65 35 50 18 1298.594 186 59 36 47.5 15.5 131495 187 61 28 44.5 12.5 1326.596 188 64 37 50.5 18.5 134597 189 66 31 48.5 16.5 1361.598 190 63 39 51 19 1380.599 191 59 28 43.5 11.5 1392100 192 53 32 42.5 10.5 1402.5101 193 50 30 40 8 1410.5
102 194 50 28 39 7 1417.5103 195 58 27 42.5 10.5 1428104 196 67 37 52 20 1448105 197 72 41 56.5 24.5 1472.5
106 198 76 43 59.5 27.5 1500107 199 53 31 42 10 1510108 200 55 30 42.5 10.5 1520.5109 201 65 30 47.5 15.5 1536
110 202 73 41 57 25 1561111 203 67 40 53.5 21.5 1582.5112 204 67 35 51 19 1601.5113 205 69 35 52 20 1621.5
114 206 73 41 57 25 1646.5
115 207 67 39 53 21 1667.5116 208 61 29 45 13 1680.5117 209 60 37 48.5 16.5 1697118 210 67 35 51 19 1716
119 211 73 39 56 24 1740120 212 78 45 61.5 29.5 1769.5121 213 74 45 59.5 27.5 1797122 214 50 30 40 8 1805
123 215 59 29 44 12 1817124 216 64 38 51 19 1836125 217 73 41 57 25 1861126 218 76 42 59 27 1888127 219 74 50 62 30 1918128 220 79 44 61.5 29.5 1947.5129 221 68 46 57 25 1972.5130 222 78 43 60.5 28.5 2001131 223 68 43 55.5 23.5 2024.5132 224 78 41 59.5 27.5 2052133 225 75 38 56.5 24.5 2076.5134 226 56 37 46.5 14.5 2091135 227 69 39 54 22 2113
136 228 67 43 55 23 2136137 229 73 40 56.5 24.5 2160.5138 230 80 43 61.5 29.5 2190139 231 85 55 70 38 2228
140 232 90 58 74 42 2270141 233 93 60 76.5 44.5 2314.5142 234 77 41 59 27 2341.5143 235 57 39 48 16 2357.5
144 236 50 37 43.5 11.5 2369145 237 57 37 47 15 2384146 238 67 43 55 23 2407147 239 68 43 55.5 23.5 2430.5
148 240 72 42 57 25 2455.5149 241 80 50 65 33 2488.5150 242 75 45 60 28 2516.5151 243 77 45 61 29 2545.5152 244 87 53 70 38 2583.5153 245 87 53 70 38 2621.5154 246 86 55 70.5 38.5 2660155 247 84 52 68 36 2696156 248 70 42 56 24 2720157 249 63 37 50 18 2738158 250 79 46 62.5 30.5 2768.5159 251 83 50 66.5 34.5 2803160 252 80 48 64 32 2835
161 253 78 46 62 30 2865162 254 87 52 69.5 37.5 2902.5163 255 75 49 62 30 2932.5164 256 75 42 58.5 26.5 2959
165 257 80 47 63.5 31.5 2990.5166 258 88 53 70.5 38.5 3029167 259 92 58 75 43 3072168 260 93 61 77 45 3117
169 261 93 59 76 44 3161170 262 94 62 78 46 3207171 263 89 62 75.5 43.5 3250.5172 264 90 61 75.5 43.5 3294
173 265 92 56 74 42 3336174 266 94 63 78.5 46.5 3382.5175 267 92 64 78 46 3428.5176 268 92 62 77 45 3473.5177 269 92 60 76 44 3517.5178 270 90 61 75.5 43.5 3561179 271 94 59 76.5 44.5 3605.5180 272 94 62 78 46 3651.5181 273 91 64 77.5 45.5 3697182 274 87 59 73 41 3738183 275 88 59 73.5 41.5 3779.5184 276 91 61 76 44 3823.5185 277 96 60 78 46 3869.5
186 278 95 66 80.5 48.5 3918187 279 91 64 77.5 45.5 3963.5188 280 88 59 73.5 41.5 4005189 281 86 60 73 41 4046
190 282 92 61 76.5 44.5 4090.5191 283 92 60 76 44 4134.5192 284 93 64 78.5 46.5 4181193 285 90 63 76.5 44.5 4225.5
194 286 91 61 76 44 4269.5195 287 89 60 74.5 42.5 4312196 288 86 60 73 41 4353197 289 91 58 74.5 42.5 4395.5
198 290 93 65 79 47 4442.5199 291 90 64 77 45 4487.5200 292 92 64 78 46 4533.5201 293 95 65 80 48 4581.5202 294 92 67 79.5 47.5 4629203 295 88 62 75 43 4672204 296 91 61 76 44 4716205 297 88 61 74.5 42.5 4758.5206 298 91 65 78 46 4804.5207 299 92 65 78.5 46.5 4851208 300 87 61 74 42 4893209 301 86 61 73.5 41.5 4934.5210 302 88 62 75 43 4977.5
211 303 93 65 79 47 5024.5212 304 95 65 80 48 5072.5213 305 97 65 81 49 5121.5214 306 97 66 81.5 49.5 5171
215 307 96 70 83 51 5222216 308 97 67 82 50 5272217 309 92 64 78 46 5318218 310 90 64 77 45 5363
219 311 77 60 68.5 36.5 5399.5220 312 84 60 72 40 5439.5221 313 85 60 72.5 40.5 5480222 314 83 59 71 39 5519
223 315 88 61 74.5 42.5 5561.5
224 316 93 62 77.5 45.5 5607225 317 92 60 76 44 5651226 318 91 65 78 46 5697227 319 93 66 79.5 47.5 5744.5
228 320 88 65 76.5 44.5 5789229 321 86 52 69 37 5826230 322 82 53 67.5 35.5 5861.5231 323 88 59 73.5 41.5 5903
232 324 90 58 74 42 5945233 325 90 62 76 44 5989234 326 91 60 75.5 43.5 6032.5235 327 93 60 76.5 44.5 6077236 328 94 62 78 46 6123237 329 93 67 80 48 6171238 330 89 59 74 42 6213239 331 88 62 75 43 6256240 332 93 59 76 44 6300241 333 93 61 77 45 6345242 334 91 64 77.5 45.5 6390.5243 335 86 63 74.5 42.5 6433244 336 75 57 66 34 6467
245 337 78 58 68 36 6503246 338 78 48 63 31 6534247 339 82 52 67 35 6569248 340 85 55 70 38 6607
249 341 87 55 71 39 6646250 342 86 53 69.5 37.5 6683.5251 343 85 55 70 38 6721.5252 344 87 58 72.5 40.5 6762
253 345 70 54 62 30 6792254 346 71 52 61.5 29.5 6821.5255 347 77 50 63.5 31.5 6853256 348 76 47 61.5 29.5 6882.5
257 349 79 50 64.5 32.5 6915258 350 81 57 69 37 6952259 351 81 53 67 35 6987260 352 80 56 68 36 7023261 353 81 57 69 37 7060262 354 80 52 66 34 7094263 355 80 54 67 35 7129264 356 82 53 67.5 35.5 7164.5265 357 83 54 68.5 36.5 7201266 358 81 54 67.5 35.5 7236.5267 359 80 51 65.5 33.5 7270268 360 83 51 67 35 7305269 361 84 56 70 38 7343 71 1190 length of freeze (day) 59270 362 85 57 71 39 7382 130 820 frost depth (oF-day)370271 363 84 56 70 38 7420 average temperature 52.6272 364 83 56 69.5 37.5 7457.5273 365 82 56 69 37 7494.5274 366 81 52 66.5 34.5 7529

2008-2009 day of frost year degree cumulative
day of year (consecutive date) max. temp. min. temp avg. temp day (
oF) degree day (
oF)274 1 83 53 68 36 36275 2 81 53 67 35 71276 3 73 55 64 32 103277 4 59 47 53 21 124278 5 60 45 52.5 20.5 144.5279 6 67 41 54 22 166.5280 7 69 43 56 24 190.5281 8 74 44 59 27 217.5282 9 76 47 61.5 29.5 247
283 10 75 49 62 30 277284 11 69 36 52.5 20.5 297.5285 12 50 27 38.5 6.5 304286 13 55 27 41 9 313
287 14 66 32 49 17 330288 15 67 38 52.5 20.5 350.5289 16 70 41 55.5 23.5 374290 17 75 42 58.5 26.5 400.5
291 18 73 42 57.5 25.5 426292 19 73 45 59 27 453293 20 73 51 62 30 483294 21 73 42 57.5 25.5 508.5
295 22 58 32 45 13 521.5296 23 66 31 48.5 16.5 538297 24 68 34 51 19 557298 25 71 38 54.5 22.5 579.5299 26 74 46 60 28 607.5300 27 70 43 56.5 24.5 632301 28 73 44 58.5 26.5 658.5302 29 72 43 57.5 25.5 684303 30 73 43 58 26 710304 31 72 46 59 27 737305 32 73 46 59.5 27.5 764.5306 33 70 46 58 26 790.5307 34 65 40 52.5 20.5 811
308 35 65 38 51.5 19.5 830.5309 36 45 27 36 4 834.5310 37 49 18 33.5 1.5 836311 38 56 23 39.5 7.5 843.5
312 39 59 35 47 15 858.5313 40 50 37 43.5 11.5 870314 41 50 32 41 9 879315 42 54 32 43 11 890
316 43 58 31 44.5 12.5 902.5317 44 64 35 49.5 17.5 920318 45 56 36 46 14 934319 46 61 29 45 13 947
320 47 64 37 50.5 18.5 965.5321 48 66 39 52.5 20.5 986322 49 65 37 51 19 1005323 50 64 38 51 19 1024324 51 57 36 46.5 14.5 1038.5325 52 53 30 41.5 9.5 1048
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day of frost year
Blanding, UT
2007-2008
326 53 55 29 42 10 1058
327 54 56 30 43 11 1069328 55 55 31 43 11 1080329 56 54 35 44.5 12.5 1092.5330 57 56 38 47 15 1107.5
331 58 50 35 42.5 10.5 1118332 59 50 36 43 11 1129333 60 54 30 42 10 1139334 61 57 39 48 16 1155
335 62 55 34 44.5 12.5 1167.5336 63 52 35 43.5 11.5 1179337 64 53 31 42 10 1189338 65 43 29 36 4 1193339 66 48 24 36 4 1197340 67 54 27 40.5 8.5 1205.5341 68 50 30 40 8 1213.5342 69 42 33 37.5 5.5 1219343 70 41 26 33.5 1.5 1220.5344 71 51 23 37 5 1225.5345 72 51 28 39.5 7.5 1233346 73 45 28 36.5 4.5 1237.5347 74 50 32 41 9 1246.5
348 75 32 14 23 -9 1237.5349 76 28 15 21.5 -10.5 1227350 77 33 22 27.5 -4.5 1222.5351 78 34 24 29 -3 1219.5
352 79 36 23 29.5 -2.5 1217353 80 37 20 28.5 -3.5 1213.5354 81 35 13 24 -8 1205.5355 82 40 20 30 -2 1203.5
356 83 33 25 29 -3 1200.5357 84 34 14 24 -8 1192.5358 85 30 10 20 -12 1180.5359 86 36 23 29.5 -2.5 1178
360 87 35 14 24.5 -7.5 1170.5361 88 28 2 15 -17 1153.5362 89 30 9 19.5 -12.5 1141363 90 35 13 24 -8 1133364 91 45 19 32 0 1133365 92 33 22 27.5 -4.5 1128.51 93 42 21 31.5 -0.5 11282 94 48 24 36 4 11323 95 37 20 28.5 -3.5 1128.54 96 35 18 26.5 -5.5 11235 97 26 13 19.5 -12.5 1110.56 98 37 13 25 -7 1103.57 99 45 18 31.5 -0.5 1103
8 100 45 25 35 3 11069 101 40 25 32.5 0.5 1106.510 102 44 20 32 0 1106.511 103 42 19 30.5 -1.5 1105
12 104 47 23 35 3 110813 105 44 23 33.5 1.5 1109.514 106 48 23 35.5 3.5 111315 107 44 25 34.5 2.5 1115.5
16 108 45 25 35 3 1118.517 109 46 25 35.5 3.5 112218 110 45 25 35 3 112519 111 48 24 36 4 1129
20 112 51 25 38 6 113521 113 50 29 39.5 7.5 1142.522 114 49 33 41 9 1151.523 115 46 37 41.5 9.5 116124 116 48 36 42 10 117125 117 48 33 40.5 8.5 1179.526 118 43 22 32.5 0.5 118027 119 33 19 26 -6 117428 120 42 18 30 -2 117229 121 45 21 33 1 117330 122 50 25 37.5 5.5 1178.531 123 48 27 37.5 5.5 118432 124 51 28 39.5 7.5 1191.5
33 125 49 26 37.5 5.5 119734 126 55 30 42.5 10.5 1207.535 127 56 30 43 11 1218.536 128 56 31 43.5 11.5 1230
37 129 53 33 43 11 124138 130 58 32 45 13 125439 131 46 29 37.5 5.5 1259.540 132 40 24 32 0 1259.5
41 133 39 19 29 -3 1256.542 134 36 16 26 -6 1250.543 135 42 18 30 -2 1248.544 136 35 28 31.5 -0.5 1248
45 137 38 23 30.5 -1.5 1246.546 138 40 18 29 -3 1243.547 139 46 28 37 5 1248.548 140 44 28 36 4 1252.549 141 46 23 34.5 2.5 125550 142 48 22 35 3 125851 143 49 24 36.5 4.5 1262.552 144 57 27 42 10 1272.553 145 53 33 43 11 1283.554 146 59 42 50.5 18.5 130255 147 61 37 49 17 131956 148 63 36 49.5 17.5 1336.557 149 60 37 48.5 16.5 1353
58 150 54 30 42 10 136359 151 57 23 40 8 137160 152 59 32 45.5 13.5 1384.561 153 67 37 52 20 1404.5
62 154 69 45 57 25 1429.563 155 68 38 53 21 1450.564 156 59 32 45.5 13.5 146465 157 54 33 43.5 11.5 1475.5
66 158 47 31 39 7 1482.567 159 54 27 40.5 8.5 149168 160 58 32 45 13 150469 161 46 23 34.5 2.5 1506.5
70 162 59 24 41.5 9.5 1516
71 163 60 35 47.5 15.5 1531.572 164 57 32 44.5 12.5 154473 165 56 32 44 12 155674 166 60 29 44.5 12.5 1568.5
75 167 65 31 48 16 1584.576 168 68 37 52.5 20.5 160577 169 70 41 55.5 23.5 1628.578 170 72 41 56.5 24.5 1653
79 171 71 44 57.5 25.5 1678.580 172 70 42 56 24 1702.581 173 69 36 52.5 20.5 172382 174 52 26 39 7 173083 175 55 26 40.5 8.5 1738.584 176 57 27 42 10 1748.585 177 47 33 40 8 1756.586 178 48 22 35 3 1759.587 179 60 24 42 10 1769.588 180 66 25 45.5 13.5 178389 181 45 18 31.5 -0.5 1782.590 182 55 21 38 6 1788.591 183 48 32 40 8 1796.5
92 184 57 25 41 9 1805.593 185 64 - - - 1805.594 186 46 25 35.5 3.5 180995 187 54 20 37 5 1814
96 188 63 30 46.5 14.5 1828.597 189 68 35 51.5 19.5 184898 190 68 40 54 22 187099 191 65 30 47.5 15.5 1885.5
100 192 63 39 51 19 1904.5101 193 53 33 43 11 1915.5102 194 60 34 47 15 1930.5103 195 67 39 53 21 1951.5
104 196 68 45 56.5 24.5 1976105 197 59 29 44 12 1988106 198 48 25 36.5 4.5 1992.5107 199 55 33 44 12 2004.5108 200 63 34 48.5 16.5 2021109 201 71 41 56 24 2045110 202 75 43 59 27 2072111 203 78 46 62 30 2102112 204 80 45 62.5 30.5 2132.5113 205 80 42 61 29 2161.5114 206 73 56 64.5 32.5 2194115 207 69 40 54.5 22.5 2216.5116 208 60 32 46 14 2230.5
117 209 65 33 49 17 2247.5118 210 67 42 54.5 22.5 2270119 211 74 40 57 25 2295120 212 77 45 61 29 2324
121 213 79 48 63.5 31.5 2355.5122 214 63 47 55 23 2378.5123 215 71 47 59 27 2405.5124 216 73 48 60.5 28.5 2434
125 217 79 49 64 32 2466126 218 84 50 67 35 2501127 219 84 52 68 36 2537128 220 80 48 64 32 2569
129 221 80 45 62.5 30.5 2599.5130 222 84 52 68 36 2635.5131 223 85 51 68 36 2671.5132 224 85 53 69 37 2708.5133 225 80 52 66 34 2742.5134 226 82 52 67 35 2777.5135 227 82 54 68 36 2813.5136 228 83 52 67.5 35.5 2849137 229 85 51 68 36 2885138 230 90 55 72.5 40.5 2925.5139 231 82 60 71 39 2964.5140 232 85 55 70 38 3002.5141 233 77 52 64.5 32.5 3035
142 234 64 51 57.5 25.5 3060.5143 235 60 51 55.5 23.5 3084144 236 72 52 62 30 3114145 237 68 48 58 26 3140
146 238 68 44 56 24 3164147 239 75 48 61.5 29.5 3193.5148 240 78 50 64 32 3225.5149 241 79 52 65.5 33.5 3259
150 242 79 53 66 34 3293151 243 79 51 65 33 3326152 244 80 51 65.5 33.5 3359.5153 245 77 56 66.5 34.5 3394
154 246 83 53 68 36 3430155 247 83 55 69 37 3467156 248 79 58 68.5 36.5 3503.5157 249 73 51 62 30 3533.5158 250 78 46 62 30 3563.5159 251 76 49 62.5 30.5 3594160 252 73 53 63 31 3625161 253 71 51 61 29 3654162 254 77 51 64 32 3686163 255 79 49 64 32 3718164 256 81 52 66.5 34.5 3752.5165 257 82 51 66.5 34.5 3787166 258 79 55 67 35 3822
167 259 79 56 67.5 35.5 3857.5168 260 79 56 67.5 35.5 3893169 261 78 48 63 31 3924170 262 84 48 66 34 3958
171 263 71 57 64 32 3990172 264 85 54 69.5 37.5 4027.5173 265 86 55 70.5 38.5 4066174 266 94 61 77.5 45.5 4111.5
175 267 90 62 76 44 4155.5176 268 91 64 77.5 45.5 4201177 269 80 59 69.5 37.5 4238.5178 270 84 50 67 35 4273.5
179 271 90 52 71 39 4312.5
180 272 90 59 74.5 42.5 4355181 273 94 62 78 46 4401182 274 94 64 79 47 4448183 275 87 66 76.5 44.5 4492.5
184 276 86 56 71 39 4531.5185 277 90 63 76.5 44.5 4576186 278 92 60 76 44 4620187 279 95 66 80.5 48.5 4668.5
188 280 92 61 76.5 44.5 4713189 281 94 63 78.5 46.5 4759.5190 282 93 62 77.5 45.5 4805191 283 95 63 79 47 4852192 284 95 66 80.5 48.5 4900.5193 285 96 68 82 50 4950.5194 286 95 68 81.5 49.5 5000195 287 96 65 80.5 48.5 5048.5196 288 98 68 83 51 5099.5197 289 96 66 81 49 5148.5198 290 99 68 83.5 51.5 5200199 291 99 69 84 52 5252200 292 99 67 83 51 5303
201 293 95 67 81 49 5352202 294 94 64 79 47 5399203 295 91 58 74.5 42.5 5441.5204 296 93 63 78 46 5487.5
205 297 96 65 80.5 48.5 5536206 298 95 71 83 51 5587207 299 88 60 74 42 5629208 300 89 61 75 43 5672
209 301 91 64 77.5 45.5 5717.5210 302 89 59 74 42 5759.5211 303 87 57 72 40 5799.5212 304 90 57 73.5 41.5 5841
213 305 92 64 78 46 5887214 306 96 63 79.5 47.5 5934.5215 307 95 65 80 48 5982.5216 308 97 66 81.5 49.5 6032217 309 93 67 80 48 6080218 310 87 67 77 45 6125219 311 88 60 74 42 6167220 312 82 54 68 36 6203221 313 86 53 69.5 37.5 6240.5222 314 90 59 74.5 42.5 6283223 315 93 59 76 44 6327224 316 93 62 77.5 45.5 6372.5225 317 87 67 77 45 6417.5
226 318 87 57 72 40 6457.5227 319 88 57 72.5 40.5 6498228 320 86 52 69 37 6535229 321 88 57 72.5 40.5 6575.5
230 322 90 57 73.5 41.5 6617231 323 90 56 73 41 6658232 324 96 61 78.5 46.5 6704.5233 325 95 61 78 46 6750.5
234 326 94 65 79.5 47.5 6798235 327 85 61 73 41 6839236 328 85 59 72 40 6879237 329 85 58 71.5 39.5 6918.5
238 330 88 58 73 41 6959.5239 331 89 64 76.5 44.5 7004240 332 90 61 75.5 43.5 7047.5241 333 92 62 77 45 7092.5242 334 93 69 81 49 7141.5243 335 91 62 76.5 44.5 7186244 336 89 65 77 45 7231245 337 89 64 76.5 44.5 7275.5246 338 87 60 73.5 41.5 7317247 339 87 60 73.5 41.5 7358.5248 340 77 60 68.5 36.5 7395249 341 83 54 68.5 36.5 7431.5250 342 86 57 71.5 39.5 7471
251 343 88 56 72 40 7511252 344 89 59 74 42 7553253 345 81 60 70.5 38.5 7591.5254 346 88 59 73.5 41.5 7633
255 347 85 55 70 38 7671256 348 80 58 69 37 7708257 349 79 54 66.5 34.5 7742.5258 350 69 54 61.5 29.5 7772
259 351 74 52 63 31 7803260 352 73 52 62.5 30.5 7833.5261 353 78 53 65.5 33.5 7867262 354 75 52 63.5 31.5 7898.5
263 355 79 52 65.5 33.5 7932264 356 68 49 58.5 26.5 7958.5265 357 68 40 54 22 7980.5266 358 71 46 58.5 26.5 8007267 359 73 43 58 26 8033268 360 80 48 64 32 8065269 361 85 52 68.5 36.5 8101.5270 362 88 54 71 39 8140.5 74 1246.5 length of freeze (day) 25
271 363 85 54 69.5 37.5 8178 99 1103 frost depth (oF-day)143.5272 364 84 52 68 36 8214 average temperature 54.6273 365 72 43 57.5 25.5 8239.5
2009-2010
day of frost year degree cumulative
day of year (consecutive date) max. temp. min. temp avg. temp day (
oF) degree day (
oF)274 1 60 33 46.5 14.5 14.5275 2 66 36 51 19 33.5276 3 69 41 55 23 56.5
277 4 66 49 57.5 25.5 82278 5 62 39 50.5 18.5 100.5279 6 64 31 47.5 15.5 116280 7 62 42 52 20 136281 8 67 38 52.5 20.5 156.5282 9 67 38 52.5 20.5 177
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day of frost year
Blanding, UT
2008-2009
283 10 68 36 52 20 197
284 11 70 42 56 24 221285 12 66 41 53.5 21.5 242.5286 13 66 45 55.5 23.5 266287 14 71 47 59 27 293
288 15 73 43 58 26 319289 16 78 44 61 29 348290 17 75 44 59.5 27.5 375.5291 18 77 48 62.5 30.5 406
292 19 78 49 63.5 31.5 437.5293 20 64 45 54.5 22.5 460294 21 64 41 52.5 20.5 480.5295 22 63 36 49.5 17.5 498296 23 64 39 51.5 19.5 517.5297 24 67 41 54 22 539.5298 25 60 36 48 16 555.5299 26 57 31 44 12 567.5300 27 55 34 44.5 12.5 580301 28 37 26 31.5 -0.5 579.5302 29 37 29 33 1 580.5303 30 47 21 34 2 582.5304 31 58 31 44.5 12.5 595
305 32 60 34 47 15 610306 33 65 38 51.5 19.5 629.5307 34 65 39 52 20 649.5308 35 69 39 54 22 671.5
309 36 70 43 56.5 24.5 696310 37 68 45 56.5 24.5 720.5311 38 68 41 54.5 22.5 743312 39 65 39 52 20 763
313 40 64 38 51 19 782314 41 66 40 53 21 803315 42 62 44 53 21 824316 43 62 43 52.5 20.5 844.5
317 44 53 41 47 15 859.5318 45 43 29 36 4 863.5319 46 44 29 36.5 4.5 868320 47 46 21 33.5 1.5 869.5321 48 47 25 36 4 873.5322 49 51 27 39 7 880.5323 50 58 29 43.5 11.5 892324 51 51 29 40 8 900325 52 55 23 39 7 907326 53 49 27 38 6 913327 54 45 23 34 2 915328 55 50 22 36 4 919329 56 55 25 40 8 927
330 57 53 27 40 8 935331 58 57 28 42.5 10.5 945.5332 59 52 28 40 8 953.5333 60 49 31 40 8 961.5
334 61 48 30 39 7 968.5335 62 52 27 39.5 7.5 976336 63 48 22 35 3 979337 64 33 12 22.5 -9.5 969.5
338 65 33 10 21.5 -10.5 959339 66 33 15 24 -8 951340 67 38 29 33.5 1.5 952.5341 68 33 24 28.5 -3.5 949
342 69 31 9 20 -12 937343 70 25 1 13 -19 918344 71 31 6 18.5 -13.5 904.5345 72 34 2 18 -14 890.5346 73 32 23 27.5 -4.5 886347 74 37 31 34 2 888348 75 40 19 29.5 -2.5 885.5349 76 40 19 29.5 -2.5 883350 77 40 20 30 -2 881351 78 43 20 31.5 -0.5 880.5352 79 41 24 32.5 0.5 881353 80 43 18 30.5 -1.5 879.5354 81 37 19 28 -4 875.5
355 82 39 23 31 -1 874.5356 83 33 28 30.5 -1.5 873357 84 43 20 31.5 -0.5 872.5358 85 30 11 20.5 -11.5 861
359 86 35 7 21 -11 850360 87 35 10 22.5 -9.5 840.5361 88 26 9 17.5 -14.5 826362 89 33 9 21 -11 815
363 90 30 19 24.5 -7.5 807.5364 91 28 20 24 -8 799.5365 92 35 11 23 -9 790.51 93 27 12 19.5 -12.5 778
2 94 36 14 25 -7 7713 95 35 14 24.5 -7.5 763.54 96 28 16 22 -10 753.55 97 33 14 23.5 -8.5 7456 98 35 15 25 -7 7387 99 39 20 29.5 -2.5 735.58 100 28 10 19 -13 722.59 101 30 9 19.5 -12.5 71010 102 34 12 23 -9 70111 103 35 16 25.5 -6.5 694.512 104 43 19 31 -1 693.513 105 43 23 33 1 694.514 106 46 31 38.5 6.5 701
15 107 44 21 32.5 0.5 701.516 108 38 21 29.5 -2.5 69917 109 39 25 32 0 69918 110 34 25 29.5 -2.5 696.5
19 111 40 31 35.5 3.5 70020 112 38 28 33 1 70121 113 34 27 30.5 -1.5 699.522 114 33 25 29 -3 696.5
23 115 37 18 27.5 -4.5 69224 116 37 13 25 -7 68525 117 37 13 25 -7 67826 118 42 16 29 -3 675
27 119 40 21 30.5 -1.5 673.5
28 120 44 32 38 6 679.529 121 44 31 37.5 5.5 68530 122 37 24 30.5 -1.5 683.531 123 38 26 32 0 683.5
32 124 40 19 29.5 -2.5 68133 125 41 18 29.5 -2.5 678.534 126 41 22 31.5 -0.5 67835 127 42 23 32.5 0.5 678.5
36 128 37 27 32 0 678.537 129 40 30 35 3 681.538 130 45 30 37.5 5.5 68739 131 37 28 32.5 0.5 687.540 132 40 22 31 -1 686.541 133 42 28 35 3 689.542 134 38 18 28 -4 685.543 135 43 20 31.5 -0.5 68544 136 47 25 36 4 68945 137 44 24 34 2 69146 138 43 21 32 0 69147 139 45 24 34.5 2.5 693.548 140 45 24 34.5 2.5 696
49 141 46 25 35.5 3.5 699.550 142 40 26 33 1 700.551 143 40 29 34.5 2.5 70352 144 35 27 31 -1 702
53 145 38 21 29.5 -2.5 699.554 146 39 13 26 -6 693.555 147 36 20 28 -4 689.556 148 43 22 32.5 0.5 690
57 149 44 22 33 1 69158 150 43 29 36 4 69559 151 48 32 40 8 70360 152 52 29 40.5 8.5 711.5
61 153 48 28 38 6 717.562 154 51 32 41.5 9.5 72763 155 50 30 40 8 73564 156 46 27 36.5 4.5 739.565 157 50 29 39.5 7.5 74766 158 43 34 38.5 6.5 753.567 159 45 32 38.5 6.5 76068 160 42 30 36 4 76469 161 42 27 34.5 2.5 766.570 162 46 26 36 4 770.571 163 53 24 38.5 6.5 77772 164 53 30 41.5 9.5 786.573 165 35 25 30 -2 784.5
74 166 53 24 38.5 6.5 79175 167 59 31 45 13 80476 168 62 33 47.5 15.5 819.577 169 62 36 49 17 836.5
78 170 47 30 38.5 6.5 84379 171 48 23 35.5 3.5 846.580 172 59 25 42 10 856.581 173 62 36 49 17 873.5
82 174 52 33 42.5 10.5 88483 175 55 37 46 14 89884 176 55 29 42 10 90885 177 45 32 38.5 6.5 914.5
86 178 51 30 40.5 8.5 92387 179 60 28 44 12 93588 180 63 34 48.5 16.5 951.589 181 74 39 56.5 24.5 97690 182 65 42 53.5 21.5 997.591 183 41 25 33 1 998.592 184 47 25 36 4 1002.593 185 55 28 41.5 9.5 101294 186 65 31 48 16 102895 187 68 37 52.5 20.5 1048.596 188 48 25 36.5 4.5 105397 189 55 28 41.5 9.5 1062.598 190 58 29 43.5 11.5 1074
99 191 68 36 52 20 1094100 192 69 40 54.5 22.5 1116.5101 193 70 39 54.5 22.5 1139102 194 72 41 - - 1139
103 195 56 33 44.5 12.5 1151.5104 196 65 33 49 17 1168.5105 197 71 41 56 24 1192.5106 198 75 45 60 28 1220.5
107 199 70 46 58 26 1246.5108 200 75 45 60 28 1274.5109 201 74 46 60 28 1302.5110 202 70 49 59.5 27.5 1330
111 203 68 36 52 20 1350112 204 54 37 45.5 13.5 1363.5113 205 55 32 43.5 11.5 1375114 206 65 42 53.5 21.5 1396.5115 207 72 41 56.5 24.5 1421116 208 67 40 53.5 21.5 1442.5117 209 75 40 57.5 25.5 1468118 210 76 46 61 29 1497119 211 58 32 45 13 1510120 212 53 29 41 9 1519121 213 57 29 43 11 1530122 214 57 32 44.5 12.5 1542.5123 215 64 31 47.5 15.5 1558
124 216 75 39 57 25 1583125 217 77 45 61 29 1612126 218 73 44 58.5 26.5 1638.5127 219 63 33 48 16 1654.5
128 220 75 41 58 26 1680.5129 221 79 47 63 31 1711.5130 222 61 43 52 20 1731.5131 223 58 33 45.5 13.5 1745
132 224 60 32 46 14 1759133 225 61 39 50 18 1777134 226 66 45 55.5 23.5 1800.5135 227 67 37 52 20 1820.5
136 228 75 41 58 26 1846.5
137 229 80 53 66.5 34.5 1881138 230 65 45 55 23 1904139 231 73 41 57 25 1929140 232 76 42 59 27 1956
141 233 83 50 66.5 34.5 1990.5142 234 76 54 65 33 2023.5143 235 70 45 57.5 25.5 2049144 236 60 35 47.5 15.5 2064.5
145 237 71 42 56.5 24.5 2089146 238 80 48 64 32 2121147 239 85 49 67 35 2156148 240 86 52 69 37 2193149 241 74 50 62 30 2223150 242 76 42 59 27 2250151 243 82 49 65.5 33.5 2283.5152 244 80 52 66 34 2317.5153 245 83 57 70 38 2355.5154 246 85 55 70 38 2393.5155 247 89 57 73 41 2434.5156 248 95 61 78 46 2480.5157 249 97 64 80.5 48.5 2529
158 250 93 61 77 45 2574159 251 92 61 76.5 44.5 2618.5160 252 92 62 77 45 2663.5161 253 89 59 74 42 2705.5
162 254 77 53 65 33 2738.5163 255 68 48 58 26 2764.5164 256 64 43 53.5 21.5 2786165 257 77 46 61.5 29.5 2815.5
166 258 80 48 64 32 2847.5167 259 87 56 71.5 39.5 2887168 260 84 49 66.5 34.5 2921.5169 261 87 56 71.5 39.5 2961
170 262 88 55 71.5 39.5 3000.5171 263 88 53 70.5 38.5 3039172 264 89 54 71.5 39.5 3078.5173 265 86 53 69.5 37.5 3116174 266 90 55 72.5 40.5 3156.5175 267 93 58 75.5 43.5 3200176 268 90 62 76 44 3244177 269 89 61 75 43 3287178 270 91 61 76 44 3331179 271 91 61 76 44 3375180 272 88 62 75 43 3418181 273 87 63 75 43 3461182 274 89 63 76 44 3505
183 275 84 64 74 42 3547184 276 89 59 74 42 3589185 277 86 57 71.5 39.5 3628.5186 278 85 48 66.5 34.5 3663
187 279 91 58 74.5 42.5 3705.5188 280 91 61 76 44 3749.5189 281 90 63 76.5 44.5 3794190 282 89 63 76 44 3838
191 283 89 62 75.5 43.5 3881.5192 284 94 64 79 47 3928.5193 285 95 59 77 45 3973.5194 286 97 63 80 48 4021.5
195 287 95 65 80 48 4069.5196 288 96 65 80.5 48.5 4118197 289 98 68 83 51 4169198 290 100 68 84 52 4221199 291 99 70 84.5 52.5 4273.5200 292 100 68 84 52 4325.5201 293 95 63 79 47 4372.5202 294 85 63 74 42 4414.5203 295 84 63 73.5 41.5 4456204 296 85 61 73 41 4497205 297 90 59 74.5 42.5 4539.5206 298 90 59 74.5 42.5 4582207 299 86 61 73.5 41.5 4623.5
208 300 89 63 76 44 4667.5209 301 89 65 77 45 4712.5210 302 87 63 75 43 4755.5211 303 90 64 77 45 4800.5
212 304 81 63 72 40 4840.5213 305 78 61 69.5 37.5 4878214 306 73 63 68 36 4914215 307 85 59 72 40 4954
216 308 86 62 74 42 4996217 309 80 57 68.5 36.5 5032.5218 310 87 61 74 42 5074.5219 311 75 58 66.5 34.5 5109
220 312 80 56 68 36 5145221 313 83 59 71 39 5184222 314 86 59 72.5 40.5 5224.5223 315 83 61 72 40 5264.5224 316 89 60 74.5 42.5 5307225 317 89 57 73 41 5348226 318 90 57 73.5 41.5 5389.5227 319 94 62 78 46 5435.5228 320 89 64 76.5 44.5 5480229 321 88 58 73 41 5521230 322 84 64 74 42 5563231 323 86 58 72 40 5603232 324 85 52 68.5 36.5 5639.5
233 325 87 62 74.5 42.5 5682234 326 88 62 75 43 5725235 327 85 63 74 42 5767236 328 88 61 74.5 42.5 5809.5
237 329 86 58 72 40 5849.5238 330 90 60 75 43 5892.5239 331 88 60 74 42 5934.5240 332 80 61 70.5 38.5 5973
241 333 82 55 68.5 36.5 6009.5242 334 80 55 67.5 35.5 6045243 335 81 53 67 35 6080244 336 86 52 69 37 6117
1200
Blanding, UT
245 337 89 61 75 43 6160
246 338 88 57 72.5 40.5 6200.5247 339 91 59 75 43 6243.5248 340 90 56 73 41 6284.5249 341 85 59 72 40 6324.5
250 342 80 56 68 36 6360.5251 343 73 55 64 32 6392.5252 344 75 54 64.5 32.5 6425253 345 77 49 63 31 6456
254 346 78 52 65 33 6489255 347 82 54 68 36 6525256 348 85 57 71 39 6564257 349 86 55 70.5 38.5 6602.5258 350 84 56 70 38 6640.5259 351 86 56 71 39 6679.5260 352 88 57 72.5 40.5 6720261 353 87 54 70.5 38.5 6758.5262 354 89 57 73 41 6799.5263 355 87 59 73 41 6840.5264 356 86 56 71 39 6879.5265 357 64 52 58 26 6905.5266 358 72 49 60.5 28.5 6934
267 359 76 49 62.5 30.5 6964.5268 360 83 54 68.5 36.5 7001 63 979 length of freeze (day) 56
269 361 83 54 68.5 36.5 7037.5 119 673.5 frost depth (oF-day)305.5270 362 89 59 74 42 7079.5 average temperature 51.8271 363 87 55 71 39 7118.5
272 364 89 57 73 41 7159.5273 365 87 56 71.5 39.5 7199
2010-2011 day of frost year degree cumulative
day of year (consecutive date) max. temp. min. temp avg. temp day (
oF) degree day (
oF)274 1 88 54 71 39 39275 2 85 54 69.5 37.5 76.5276 3 80 55 67.5 35.5 112277 4 75 50 62.5 30.5 142.5278 5 69 52 60.5 28.5 171279 6 68 49 58.5 26.5 197.5280 7 75 51 63 31 228.5
281 8 67 41 54 22 250.5282 9 67 42 54.5 22.5 273283 10 69 45 57 25 298284 11 75 46 60.5 28.5 326.5
285 12 78 47 62.5 30.5 357286 13 73 44 58.5 26.5 383.5287 14 74 44 59 27 410.5288 15 75 48 61.5 29.5 440
289 16 77 47 62 30 470290 17 73 47 60 28 498291 18 67 48 57.5 25.5 523.5292 19 71 47 59 27 550.5
293 20 75 46 60.5 28.5 579294 21 57 44 50.5 18.5 597.5295 22 52 43 47.5 15.5 613296 23 60 48 54 22 635297 24 58 41 49.5 17.5 652.5298 25 51 32 41.5 9.5 662299 26 53 27 40 8 670300 27 50 30 40 8 678301 28 57 29 43 11 689302 29 65 37 51 19 708303 30 68 40 54 22 730304 31 60 36 48 16 746305 32 64 38 51 19 765
306 33 64 38 51 19 784307 34 72 34 53 21 805308 35 67 40 53.5 21.5 826.5309 36 67 41 54 22 848.5
310 37 68 41 54.5 22.5 871311 38 68 38 53 21 892312 39 56 40 48 16 908313 40 49 26 37.5 5.5 913.5
314 41 47 25 36 4 917.5315 42 48 25 36.5 4.5 922316 43 49 22 35.5 3.5 925.5317 44 50 25 37.5 5.5 931
318 45 51 23 37 5 936319 46 50 30 40 8 944320 47 55 27 41 9 953321 48 50 29 39.5 7.5 960.5322 49 54 27 40.5 8.5 969323 50 52 33 42.5 10.5 979.5324 51 56 36 46 14 993.5325 52 47 25 36 4 997.5326 53 41 21 31 -1 996.5327 54 43 21 32 0 996.5328 55 30 10 20 -12 984.5329 56 35 5 20 -12 972.5330 57 40 14 27 -5 967.5
331 58 45 18 31.5 -0.5 967332 59 37 25 31 -1 966333 60 37 19 28 -4 962334 61 38 13 25.5 -6.5 955.5
335 62 44 22 33 1 956.5336 63 50 25 37.5 5.5 962337 64 50 33 41.5 9.5 971.5338 65 54 35 44.5 12.5 984
339 66 54 33 43.5 11.5 995.5340 67 51 33 42 10 1005.5341 68 53 29 41 9 1014.5342 69 48 26 37 5 1019.5
343 70 50 28 39 7 1026.5344 71 50 31 40.5 8.5 1035345 72 53 32 42.5 10.5 1045.5346 73 54 32 43 11 1056.5347 74 55 32 43.5 11.5 1068348 75 53 29 41 9 1077
0
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400
600
800
1000
0 50 100 150 200
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day of frost year
2009-2010
349 76 55 37 46 14 1091
350 77 42 32 37 5 1096351 78 41 24 32.5 0.5 1096.5352 79 36 30 33 1 1097.5353 80 45 32 38.5 6.5 1104
354 81 50 41 45.5 13.5 1117.5355 82 49 39 44 12 1129.5356 83 45 38 41.5 9.5 1139357 84 42 37 39.5 7.5 1146.5
358 85 45 32 38.5 6.5 1153359 86 45 30 37.5 5.5 1158.5360 87 45 30 37.5 5.5 1164361 88 45 26 35.5 3.5 1167.5362 89 41 22 31.5 -0.5 1167363 90 32 25 28.5 -3.5 1163.5364 91 31 20 25.5 -6.5 1157365 92 24 2 13 -19 11381 93 18 -3 7.5 -24.5 1113.52 94 19 -1 9 -23 1090.53 95 30 10 20 -12 1078.54 96 30 12 21 -11 1067.55 97 33 10 21.5 -10.5 1057
6 98 32 11 21.5 -10.5 1046.57 99 33 13 23 -9 1037.58 100 35 16 25.5 -6.5 10319 101 36 18 27 -5 1026
10 102 30 5 17.5 -14.5 1011.511 103 20 2 11 -21 990.512 104 34 12 23 -9 981.513 105 35 17 26 -6 975.5
14 106 50 20 35 3 978.515 107 46 24 35 3 981.516 108 46 24 35 3 984.517 109 49 30 39.5 7.5 992
18 110 44 28 36 4 99619 111 45 28 36.5 4.5 1000.520 112 41 16 28.5 -3.5 99721 113 47 22 34.5 2.5 999.522 114 49 26 37.5 5.5 100523 115 45 21 33 1 100624 116 45 23 34 2 100825 117 43 22 32.5 0.5 1008.526 118 47 23 35 3 1011.527 119 52 23 37.5 5.5 101728 120 49 25 37 5 102229 121 52 28 40 8 103030 122 47 30 38.5 6.5 1036.5
31 123 43 29 36 4 1040.532 124 27 5 16 -16 1024.533 125 20 1 10.5 -21.5 100334 126 28 0 14 -18 985
35 127 50 15 32.5 0.5 985.536 128 48 26 37 5 990.537 129 40 24 32 0 990.538 130 44 23 33.5 1.5 992
39 131 35 17 26 -6 98640 132 35 10 22.5 -9.5 976.541 133 40 10 25 -7 969.542 134 47 17 32 0 969.5
43 135 49 23 36 4 973.544 136 53 26 39.5 7.5 98145 137 57 29 43 11 99246 138 55 32 43.5 11.5 1003.547 139 57 35 46 14 1017.548 140 53 35 44 12 1029.549 141 52 31 41.5 9.5 103950 142 53 29 41 9 104851 143 39 21 30 -2 104652 144 41 25 33 1 104753 145 45 25 35 3 105054 146 49 25 37 5 105555 147 49 24 36.5 4.5 1059.5
56 148 43 28 35.5 3.5 106357 149 45 33 39 7 107058 150 43 26 34.5 2.5 1072.559 151 48 23 35.5 3.5 1076
60 152 56 30 43 11 108761 153 59 34 46.5 14.5 1101.562 154 59 34 46.5 14.5 111663 155 50 31 40.5 8.5 1124.5
64 156 53 26 39.5 7.5 113265 157 47 32 39.5 7.5 1139.566 158 49 32 40.5 8.5 114867 159 50 29 39.5 7.5 1155.5
68 160 56 26 41 9 1164.569 161 58 33 45.5 13.5 117870 162 65 36 50.5 18.5 1196.571 163 66 37 51.5 19.5 121672 164 62 35 48.5 16.5 1232.573 165 67 37 52 20 1252.574 166 67 40 53.5 21.5 127475 167 68 40 54 22 129676 168 65 40 52.5 20.5 1316.577 169 61 32 46.5 14.5 133178 170 64 37 50.5 18.5 1349.579 171 60 35 47.5 15.5 136580 172 57 31 44 12 1377
81 173 49 28 38.5 6.5 1383.582 174 52 25 38.5 6.5 139083 175 54 32 43 11 140184 176 58 33 45.5 13.5 1414.5
85 177 53 38 45.5 13.5 142886 178 57 32 44.5 12.5 1440.587 179 62 35 48.5 16.5 145788 180 57 24 40.5 8.5 1465.5
89 181 60 38 49 17 1482.590 182 71 41 56 24 1506.591 183 78 42 60 28 1534.592 184 77 44 60.5 28.5 1563
93 185 61 30 45.5 13.5 1576.5
94 186 53 23 38 6 1582.595 187 70 33 51.5 19.5 160296 188 60 41 50.5 18.5 1620.597 189 61 38 49.5 17.5 1638
98 190 62 42 52 20 165899 191 58 41 49.5 17.5 1675.5100 192 49 20 34.5 2.5 1678101 193 59 27 43 11 1689
102 194 62 33 47.5 15.5 1704.5103 195 68 38 53 21 1725.5104 196 58 33 45.5 13.5 1739105 197 65 32 48.5 16.5 1755.5106 198 73 38 55.5 23.5 1779107 199 78 43 60.5 28.5 1807.5108 200 73 49 61 29 1836.5109 201 68 39 53.5 21.5 1858110 202 72 43 57.5 25.5 1883.5111 203 73 47 60 28 1911.5112 204 68 37 52.5 20.5 1932113 205 62 45 53.5 21.5 1953.5114 206 57 41 49 17 1970.5
115 207 59 33 46 14 1984.5116 208 53 32 42.5 10.5 1995117 209 57 29 43 11 2006118 210 65 34 49.5 17.5 2023.5
119 211 70 33 51.5 19.5 2043120 212 50 27 38.5 6.5 2049.5121 213 53 28 40.5 8.5 2058122 214 61 32 46.5 14.5 2072.5
123 215 68 35 51.5 19.5 2092124 216 74 37 55.5 23.5 2115.5125 217 75 37 56 24 2139.5126 218 82 45 63.5 31.5 2171
127 219 82 49 65.5 33.5 2204.5128 220 79 47 63 31 2235.5129 221 62 37 49.5 17.5 2253130 222 60 35 47.5 15.5 2268.5131 223 62 37 49.5 17.5 2286132 224 69 38 53.5 21.5 2307.5133 225 77 42 59.5 27.5 2335134 226 79 50 64.5 32.5 2367.5135 227 79 49 64 32 2399.5136 228 75 44 59.5 27.5 2427137 229 68 43 55.5 23.5 2450.5138 230 58 39 48.5 16.5 2467139 231 53 36 44.5 12.5 2479.5
140 232 65 39 52 20 2499.5141 233 71 38 54.5 22.5 2522142 234 77 47 62 30 2552143 235 73 49 61 29 2581
144 236 63 46 54.5 22.5 2603.5145 237 73 40 56.5 24.5 2628146 238 81 48 64.5 32.5 2660.5147 239 82 49 65.5 33.5 2694
148 240 85 53 69 37 2731149 241 79 55 67 35 2766150 242 66 40 53 21 2787151 243 77 42 59.5 27.5 2814.5
152 244 85 57 71 39 2853.5153 245 79 51 65 33 2886.5154 246 79 44 61.5 29.5 2916155 247 87 48 67.5 35.5 2951.5156 248 89 55 72 40 2991.5157 249 87 56 71.5 39.5 3031158 250 79 48 63.5 31.5 3062.5159 251 84 49 66.5 34.5 3097160 252 82 50 66 34 3131161 253 84 52 68 36 3167162 254 85 55 70 38 3205163 255 87 51 69 37 3242164 256 85 56 70.5 38.5 3280.5
165 257 86 56 71 39 3319.5166 258 90 57 73.5 41.5 3361167 259 89 59 74 42 3403168 260 75 52 63.5 31.5 3434.5
169 261 85 57 71 39 3473.5170 262 81 51 66 34 3507.5171 263 78 47 62.5 30.5 3538172 264 85 54 69.5 37.5 3575.5
173 265 92 57 74.5 42.5 3618174 266 95 60 77.5 45.5 3663.5175 267 94 61 77.5 45.5 3709176 268 93 55 74 42 3751
177 269 93 57 75 43 3794178 270 95 61 78 46 3840179 271 96 64 80 48 3888180 272 98 67 82.5 50.5 3938.5181 273 85 61 73 41 3979.5182 274 90 57 73.5 41.5 4021183 275 98 68 83 51 4072184 276 96 68 82 50 4122185 277 96 64 80 48 4170186 278 93 68 80.5 48.5 4218.5187 279 89 66 77.5 45.5 4264188 280 93 67 80 48 4312189 281 92 63 77.5 45.5 4357.5
190 282 90 61 75.5 43.5 4401191 283 85 61 73 41 4442192 284 89 61 75 43 4485193 285 82 57 69.5 37.5 4522.5
194 286 87 59 73 41 4563.5195 287 86 54 70 38 4601.5196 288 89 58 73.5 41.5 4643197 289 89 64 76.5 44.5 4687.5
198 290 95 70 82.5 50.5 4738199 291 93 62 77.5 45.5 4783.5200 292 86 61 73.5 41.5 4825201 293 92 64 78 46 4871
202 294 93 62 77.5 45.5 4916.5
203 295 93 62 77.5 45.5 4962204 296 96 60 78 46 5008205 297 100 66 83 51 5059206 298 94 62 78 46 5105
207 299 76 61 68.5 36.5 5141.5208 300 83 59 71 39 5180.5209 301 89 59 74 42 5222.5210 302 91 64 77.5 45.5 5268
211 303 92 65 78.5 46.5 5314.5212 304 88 65 76.5 44.5 5359213 305 89 62 75.5 43.5 5359214 306 89 63 76 44 5403215 307 91 62 76.5 44.5 5447.5216 308 89 58 73.5 41.5 5489217 309 93 62 77.5 45.5 5534.5218 310 93 62 77.5 45.5 5580219 311 94 64 79 47 5627220 312 92 60 76 44 5671221 313 96 59 77.5 45.5 5716.5222 314 95 60 77.5 45.5 5762223 315 92 65 78.5 46.5 5808.5
224 316 95 62 78.5 46.5 5855225 317 96 64 80 48 5903226 318 85 66 75.5 43.5 5946.5227 319 92 59 75.5 43.5 5990
228 320 96 64 80 48 6038229 321 96 63 79.5 47.5 6085.5230 322 94 64 79 47 6132.5231 323 89 64 76.5 44.5 6177
232 324 90 64 77 45 6222233 325 89 59 74 42 6264234 326 90 62 76 44 6308235 327 93 63 78 46 6354
236 328 98 67 82.5 50.5 6404.5237 329 91 65 78 46 6450.5238 330 91 63 77 45 6495.5239 331 94 57 75.5 43.5 6539240 332 93 66 79.5 47.5 6586.5241 333 90 60 75 43 6629.5242 334 90 59 74.5 42.5 6672243 335 84 65 74.5 42.5 6714.5244 336 90 60 75 43 6757.5245 337 89 59 74 42 6799.5246 338 90 60 75 43 6842.5247 339 87 63 75 43 6885.5248 340 86 59 72.5 40.5 6926
249 341 78 58 68 36 6962250 342 80 53 66.5 34.5 6996.5251 343 82 53 67.5 35.5 7032252 344 73 54 63.5 31.5 7063.5
253 345 72 53 62.5 30.5 7094254 346 78 53 65.5 33.5 7127.5255 347 78 52 65 33 7160.5256 348 79 51 65 33 7193.5
257 349 68 47 57.5 25.5 7219258 350 68 47 57.5 25.5 7244.5259 351 69 59 64 32 7276.5260 352 69 48 58.5 26.5 7303
261 353 77 48 62.5 30.5 7333.5262 354 80 53 66.5 34.5 7368263 355 84 54 69 37 7405264 356 82 52 67 35 7440265 357 84 53 68.5 36.5 7476.5266 358 87 55 71 39 7515.5267 359 82 52 67 35 7550.5268 360 84 55 69.5 37.5 7588269 361 84 52 68 36 7624 90 1163.5 length of freeze (day) 45270 362 86 57 71.5 39.5 7663.5 135 973.5 frost depth (oF-day)190271 363 87 55 71 39 7702.5 average temperature 53.4272 364 85 61 73 41 7743.5273 365 80 55 67.5 35.5 7779
1938-1939 day of frost year degree cumulative
day of year (consecutive date) max. temp. min. temp avg. temp day (
oF) degree day (
oF)274 1 78 51 64.5 32.5 32.5
275 2 74 50 62 30 62.5276 3 76 47 61.5 29.5 92277 4 77 49 63 31 123278 5 73 44 58.5 26.5 149.5279 6 70 45 57.5 25.5 175280 7 65 47 56 24 199281 8 56 33 44.5 12.5 211.5282 9 57 37 47 15 226.5283 10 63 33 48 16 242.5284 11 64 37 50.5 18.5 261285 12 69 37 53 21 282286 13 71 45 58 26 308287 14 69 47 58 26 334
288 15 70 50 60 28 362289 16 68 45 56.5 24.5 386.5290 17 53 24 38.5 6.5 393291 18 61 25 43 11 404
292 19 57 39 48 16 420293 20 62 36 49 17 437294 21 63 32 47.5 15.5 452.5295 22 64 30 47 15 467.5
296 23 67 31 49 17 484.5297 24 67 31 49 17 501.5298 25 67 32 49.5 17.5 519299 26 69 34 51.5 19.5 538.5
300 27 67 37 52 20 558.5301 28 67 33 50 18 576.5302 29 68 35 51.5 19.5 596303 30 64 33 48.5 16.5 612.5304 31 64 40 52 20 632.5305 32 65 31 48 16 648.5
0
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0 50 100 150 200 250
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day of frost year
Blanding, UT
2010-2011
306 33 52 32 42 10 658.5
307 34 51 25 38 6 664.5308 35 43 26 34.5 2.5 667309 36 42 28 35 3 670310 37 35 20 27.5 -4.5 665.5
311 38 43 8 25.5 -6.5 659312 39 46 14 30 -2 657313 40 55 21 38 6 663314 41 51 36 43.5 11.5 674.5
315 42 48 26 37 5 679.5316 43 35 11 23 -9 670.5317 44 35 9 22 -10 660.5318 45 55 15 35 3 663.5319 46 49 18 33.5 1.5 665320 47 52 21 36.5 4.5 669.5321 48 54 23 38.5 6.5 676322 49 56 21 38.5 6.5 682.5323 50 55 14 34.5 2.5 685324 51 48 18 33 1 686325 52 50 21 35.5 3.5 689.5326 53 44 16 30 -2 687.5327 54 33 15 24 -8 679.5
328 55 33 16 24.5 -7.5 672329 56 46 10 28 -4 668330 57 49 9 29 -3 665331 58 48 11 29.5 -2.5 662.5
332 59 47 11 29 -3 659.5333 60 46 11 28.5 -3.5 656334 61 50 19 34.5 2.5 658.5335 62 49 23 36 4 662.5
336 63 47 24 35.5 3.5 666337 64 44 19 31.5 -0.5 665.5338 65 56 22 39 7 672.5339 66 54 25 39.5 7.5 680
340 67 56 22 39 7 687341 68 55 24 39.5 7.5 694.5342 69 57 25 41 9 703.5343 70 53 22 37.5 5.5 709344 71 52 25 38.5 6.5 715.5345 72 50 30 40 8 723.5346 73 43 18 30.5 -1.5 722347 74 44 10 27 -5 717348 75 44 14 29 -3 714349 76 53 33 43 11 725350 77 36 30 33 1 726351 78 40 14 27 -5 721352 79 34 14 24 -8 713
353 80 44 29 36.5 4.5 717.5354 81 44 30 37 5 722.5355 82 34 22 28 -4 718.5356 83 42 24 33 1 719.5
357 84 40 6 23 -9 710.5358 85 44 10 27 -5 705.5359 86 34 10 22 -10 695.5360 87 32 14 23 -9 686.5
361 88 32 12 22 -10 676.5362 89 40 12 26 -6 670.5363 90 42 10 26 -6 664.5364 91 40 10 25 -7 657.5
365 92 48 12 30 -2 655.51 93 48 14 31 -1 654.52 94 40 12 26 -6 648.53 95 40 26 33 1 649.54 96 38 20 29 -3 646.55 97 40 12 26 -6 640.56 98 42 22 32 0 640.57 99 52 32 42 10 650.58 100 40 32 36 4 654.59 101 42 18 30 -2 652.510 102 42 16 29 -3 649.511 103 42 20 31 -1 648.512 104 44 12 28 -4 644.5
13 105 38 16 27 -5 639.514 106 42 12 27 -5 634.515 107 42 12 27 -5 629.516 108 32 24 28 -4 625.5
17 109 32 6 19 -13 612.518 110 40 10 25 -7 605.519 111 42 14 28 -4 601.520 112 44 22 33 1 602.5
21 113 38 32 35 3 605.522 114 42 32 37 5 610.523 115 44 20 32 0 610.524 116 40 10 25 -7 603.5
25 117 42 10 26 -6 597.526 118 40 8 24 -8 589.527 119 48 12 30 -2 587.528 120 42 6 24 -8 579.529 121 46 10 28 -4 575.530 122 38 14 26 -6 569.531 123 36 12 24 -8 561.532 124 36 4 20 -12 549.533 125 26 2 14 -18 531.534 126 28 4 16 -16 515.535 127 28 16 22 -10 505.536 128 30 6 18 -14 491.537 129 28 2 15 -17 474.5
38 130 32 18 25 -7 467.539 131 34 14 24 -8 459.540 132 32 12 22 -10 449.541 133 22 -4 9 -23 426.5
42 134 32 -2 15 -17 409.543 135 34 2 18 -14 395.544 136 42 12 27 -5 390.545 137 38 6 22 -10 380.5
46 138 42 10 26 -6 374.547 139 40 12 26 -6 368.548 140 46 20 33 1 369.549 141 40 12 26 -6 363.5
50 142 34 8 21 -11 352.5
51 143 36 10 23 -9 343.552 144 34 0 17 -15 328.553 145 42 4 23 -9 319.554 146 42 10 26 -6 313.5
55 147 48 14 31 -1 312.556 148 50 16 33 1 313.557 149 46 12 29 -3 310.558 150 40 10 25 -7 303.5
59 151 42 8 25 -7 296.560 152 38 14 26 -6 290.561 153 40 12 26 -6 284.562 154 46 14 30 -2 282.563 155 42 8 25 -7 275.564 156 40 4 22 -10 265.565 157 44 6 25 -7 258.566 158 48 18 33 1 259.567 159 52 20 36 4 263.568 160 50 18 34 2 265.569 161 52 28 40 8 273.570 162 58 14 36 4 277.571 163 62 22 42 10 287.5
72 164 58 22 40 8 295.573 165 62 30 46 14 309.574 166 58 22 40 8 317.575 167 62 26 44 12 329.5
76 168 62 28 45 13 342.577 169 62 30 46 14 356.578 170 64 34 49 17 373.579 171 66 30 48 16 389.5
80 172 70 32 51 19 408.581 173 64 40 52 20 428.582 174 62 36 49 17 445.583 175 64 38 51 19 464.5
84 176 60 34 47 15 479.585 177 42 44 43 11 490.586 178 46 32 39 7 497.587 179 60 34 47 15 512.588 180 54 32 43 11 523.589 181 66 44 55 23 546.590 182 64 44 54 22 568.591 183 68 36 52 20 588.592 184 66 36 51 19 607.593 185 68 38 53 21 628.594 186 68 44 56 24 652.595 187 66 40 53 21 673.596 188 70 25 47.5 15.5 689
97 189 70 28 49 17 70698 190 72 34 53 21 72799 191 70 30 50 18 745100 192 72 36 54 22 767
101 193 62 36 49 17 784102 194 70 38 54 22 806103 195 68 30 49 17 823104 196 67 42 54.5 22.5 845.5
105 197 56 28 42 10 855.5106 198 60 33 46.5 14.5 870107 199 55 33 44 12 882108 200 68 25 46.5 14.5 896.5
109 201 71 31 51 19 915.5110 202 72 38 55 23 938.5111 203 73 38 55.5 23.5 962112 204 76 41 58.5 26.5 988.5113 205 68 50 59 27 1015.5114 206 62 32 47 15 1030.5115 207 67 36 51.5 19.5 1050116 208 71 41 56 24 1074117 209 74 41 57.5 25.5 1099.5118 210 76 41 58.5 26.5 1126119 211 66 45 55.5 23.5 1149.5120 212 68 44 56 24 1173.5121 213 74 40 57 25 1198.5
122 214 76 50 63 31 1229.5123 215 75 43 59 27 1256.5124 216 78 43 60.5 28.5 1285125 217 76 45 60.5 28.5 1313.5
126 218 65 39 52 20 1333.5127 219 68 34 51 19 1352.5128 220 75 41 58 26 1378.5129 221 77 40 58.5 26.5 1405
130 222 75 44 59.5 27.5 1432.5131 223 71 40 55.5 23.5 1456132 224 69 38 53.5 21.5 1477.5133 225 74 51 62.5 30.5 1508
134 226 75 43 59 27 1535135 227 68 41 54.5 22.5 1557.5136 228 69 42 55.5 23.5 1581137 229 76 42 59 27 1608138 230 80 46 63 31 1639139 231 78 44 61 29 1668140 232 76 39 57.5 25.5 1693.5141 233 78 44 61 29 1722.5142 234 77 45 61 29 1751.5143 235 71 38 54.5 22.5 1774144 236 62 30 46 14 1788145 237 79 39 59 27 1815146 238 74 43 58.5 26.5 1841.5
147 239 67 40 53.5 21.5 1863148 240 82 41 61.5 29.5 1892.5149 241 85 52 68.5 36.5 1929150 242 81 52 66.5 34.5 1963.5
151 243 80 51 65.5 33.5 1997152 244 80 50 65 33 2030153 245 79 43 61 29 2059154 246 85 43 64 32 2091
155 247 87 53 70 38 2129156 248 85 59 72 40 2169157 249 79 42 60.5 28.5 2197.5158 250 74 40 57 25 2222.5
159 251 80 43 61.5 29.5 2252
160 252 84 46 65 33 2285161 253 84 47 65.5 33.5 2318.5162 254 90 50 70 38 2356.5163 255 90 54 72 40 2396.5
164 256 93 54 73.5 41.5 2438165 257 91 51 71 39 2477166 258 86 52 69 37 2514167 259 83 44 63.5 31.5 2545.5
168 260 82 57 69.5 37.5 2583169 261 66 30 48 16 2599170 262 73 42 57.5 25.5 2624.5171 263 80 51 65.5 33.5 2658172 264 84 50 67 35 2693173 265 89 50 69.5 37.5 2730.5174 266 89 56 72.5 40.5 2771175 267 86 50 68 36 2807176 268 85 55 70 38 2845177 269 86 52 69 37 2882178 270 88 54 71 39 2921179 271 91 56 73.5 41.5 2962.5180 272 90 58 74 42 3004.5
181 273 92 58 75 43 3047.5182 274 91 61 76 44 3091.5183 275 88 53 70.5 38.5 3130184 276 81 49 65 33 3163
185 277 83 50 66.5 34.5 3197.5186 278 85 51 68 36 3233.5187 279 85 52 68.5 36.5 3270188 280 90 60 75 43 3313
189 281 95 60 77.5 45.5 3358.5190 282 93 62 77.5 45.5 3404191 283 94 63 78.5 46.5 3450.5192 284 93 60 76.5 44.5 3495
193 285 98 57 77.5 45.5 3540.5194 286 96 62 79 47 3587.5195 287 94 64 79 47 3634.5196 288 96 62 79 47 3681.5197 289 94 58 76 44 3725.5198 290 93 57 75 43 3768.5199 291 93 60 76.5 44.5 3813200 292 94 56 75 43 3856201 293 96 59 77.5 45.5 3901.5202 294 97 70 83.5 51.5 3953203 295 93 59 76 44 3997204 296 93 55 74 42 4039205 297 91 56 73.5 41.5 4080.5
206 298 84 61 72.5 40.5 4121207 299 87 57 72 40 4161208 300 85 61 73 41 4202209 301 79 59 69 37 4239
210 302 83 58 70.5 38.5 4277.5211 303 86 62 74 42 4319.5212 304 88 59 73.5 41.5 4361213 305 92 58 75 43 4404
214 306 94 61 77.5 45.5 4449.5215 307 92 58 75 43 4492.5216 308 91 62 76.5 44.5 4537217 309 89 65 77 45 4582
218 310 82 59 70.5 38.5 4620.5219 311 81 50 65.5 33.5 4654220 312 85 46 65.5 33.5 4687.5221 313 88 50 69 37 4724.5222 314 88 52 70 38 4762.5223 315 90 52 71 39 4801.5224 316 91 53 72 40 4841.5225 317 92 58 75 43 4884.5226 318 93 57 75 43 4927.5227 319 93 56 74.5 42.5 4970228 320 94 56 75 43 5013229 321 92 55 73.5 41.5 5054.5230 322 94 54 74 42 5096.5
231 323 92 59 75.5 43.5 5140232 324 89 64 76.5 44.5 5184.5233 325 85 57 71 39 5223.5234 326 89 53 71 39 5262.5
235 327 88 56 72 40 5302.5236 328 87 52 69.5 37.5 5340237 329 92 57 74.5 42.5 5382.5238 330 90 56 73 41 5423.5
239 331 81 58 69.5 37.5 5461240 332 85 56 70.5 38.5 5499.5241 333 83 52 67.5 35.5 5535242 334 85 56 70.5 38.5 5573.5
243 335 89 57 73 41 5614.5244 336 88 57 72.5 40.5 5655245 337 88 55 71.5 39.5 5694.5246 338 86 52 69 37 5731.5247 339 88 54 71 39 5770.5248 340 64 57 60.5 28.5 5799249 341 74 56 65 33 5832250 342 76 55 65.5 33.5 5865.5251 343 76 57 66.5 34.5 5900252 344 82 54 68 36 5936253 345 73 54 63.5 31.5 5967.5254 346 75 54 64.5 32.5 6000255 347 73 54 63.5 31.5 6031.5
256 348 73 56 64.5 32.5 6064257 349 75 53 64 32 6096258 350 73 43 58 26 6122259 351 76 48 62 30 6152
260 352 78 49 63.5 31.5 6183.5261 353 82 46 64 32 6215.5262 354 83 50 66.5 34.5 6250263 355 79 56 67.5 35.5 6285.5
264 356 80 54 67 35 6320.5265 357 81 54 67.5 35.5 6356266 358 82 48 65 33 6389267 359 71 48 59.5 27.5 6416.5
0
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400
500
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700
800
900
1000
0 50 100 150 200 250
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day of frost year
Blanding, UT
1938-1939
268 360 74 46 60 28 6444.5
269 361 58 51 54.5 22.5 6467 77 726 length of freeze (day) 80
270 362 66 44 55 23 6490 157 258.5 frost depth (oF-day)467.5271 363 68 43 55.5 23.5 6513.5 average temperature 50.0272 364 69 42 55.5 23.5 6537273 365 70 43 56.5 24.5 6561.5
1939-1940 day of frost year degree cumulative
day of year (consecutive date) max. temp. min. temp avg. temp day (
oF) degree day (
oF)274 1 73 43 58 26 26275 2 66 39 52.5 20.5 46.5276 3 66 38 52 20 66.5277 4 60 35 47.5 15.5 82278 5 64 31 47.5 15.5 97.5
279 6 69 31 50 18 115.5280 7 66 36 51 19 134.5281 8 53 39 46 14 148.5282 9 55 31 43 11 159.5
283 10 68 30 49 17 176.5284 11 68 32 50 18 194.5285 12 67 34 50.5 18.5 213286 13 69 37 53 21 234
287 14 67 38 52.5 20.5 254.5288 15 67 32 49.5 17.5 272289 16 69 36 52.5 20.5 292.5290 17 68 34 51 19 311.5
291 18 68 32 50 18 329.5292 19 69 39 54 22 351.5293 20 72 40 56 24 375.5294 21 69 32 50.5 18.5 394295 22 67 34 50.5 18.5 412.5296 23 68 32 50 18 430.5297 24 62 36 49 17 447.5298 25 58 36 47 15 462.5299 26 48 30 39 7 469.5300 27 51 27 39 7 476.5301 28 56 28 42 10 486.5302 29 62 31 46.5 14.5 501303 30 67 34 50.5 18.5 519.5
304 31 64 30 47 15 534.5305 32 64 32 48 16 550.5306 33 62 33 47.5 15.5 566307 34 57 35 46 14 580
308 35 61 30 45.5 13.5 593.5309 36 59 37 48 16 609.5310 37 63 37 50 18 627.5311 38 61 31 46 14 641.5
312 39 58 28 43 11 652.5313 40 48 34 41 9 661.5314 41 54 29 41.5 9.5 671315 42 53 26 39.5 7.5 678.5
316 43 56 28 42 10 688.5317 44 54 28 41 9 697.5318 45 56 30 43 11 708.5319 46 55 24 39.5 7.5 716320 47 58 25 41.5 9.5 725.5321 48 52 23 37.5 5.5 731322 49 52 21 36.5 4.5 735.5323 50 52 22 37 5 740.5324 51 51 21 36 4 744.5325 52 53 23 38 6 750.5326 53 55 22 38.5 6.5 757327 54 52 23 37.5 5.5 762.5328 55 59 29 44 12 774.5
329 56 53 32 42.5 10.5 785330 57 46 28 37 5 790331 58 44 34 39 7 797332 59 49 32 40.5 8.5 805.5
333 60 53 32 42.5 10.5 816334 61 51 24 37.5 5.5 821.5335 62 55 24 39.5 7.5 829336 63 52 24 38 6 835
337 64 55 24 39.5 7.5 842.5338 65 60 25 42.5 10.5 853339 66 58 25 41.5 9.5 862.5340 67 58 26 42 10 872.5
341 68 56 26 41 9 881.5342 69 55 27 41 9 890.5343 70 55 30 42.5 10.5 901344 71 57 27 42 10 911345 72 55 33 44 12 923346 73 52 25 38.5 6.5 929.5347 74 49 23 36 4 933.5348 75 51 21 36 4 937.5349 76 50 20 35 3 940.5350 77 55 26 40.5 8.5 949351 78 56 23 39.5 7.5 956.5352 79 55 24 39.5 7.5 964353 80 47 18 32.5 0.5 964.5
354 81 47 18 32.5 0.5 965355 82 46 17 31.5 -0.5 964.5356 83 40 21 30.5 -1.5 963357 84 34 10 22 -10 953
358 85 40 20 30 -2 951359 86 42 20 31 -1 950360 87 31 8 19.5 -12.5 937.5361 88 28 6 17 -15 922.5
362 89 36 7 21.5 -10.5 912363 90 40 16 28 -4 908364 91 45 20 32.5 0.5 908.5365 92 48 19 33.5 1.5 910
1 93 44 24 34 2 9122 94 36 22 29 -3 9093 95 46 22 34 2 9114 96 37 21 29 -3 9085 97 45 22 33.5 1.5 909.56 98 40 14 27 -5 904.5
7 99 36 6 21 -11 893.5
8 100 33 24 28.5 -3.5 8909 101 35 28 31.5 -0.5 889.510 102 40 24 32 0 889.511 103 51 26 38.5 6.5 896
12 104 37 30 33.5 1.5 897.513 105 31 10 20.5 -11.5 88614 106 34 3 18.5 -13.5 872.515 107 35 7 21 -11 861.5
16 108 38 6 22 -10 851.517 109 38 7 22.5 -9.5 84218 110 41 7 24 -8 83419 111 30 -2 14 -18 81620 112 31 10 20.5 -11.5 804.521 113 37 6 21.5 -10.5 79422 114 31 -2 14.5 -17.5 776.523 115 28 5 16.5 -15.5 76124 116 40 17 28.5 -3.5 757.525 117 40 17 28.5 -3.5 75426 118 37 25 31 -1 75327 119 54 23 38.5 6.5 759.528 120 54 22 38 6 765.5
29 121 47 23 35 3 768.530 122 53 22 37.5 5.5 77431 123 45 26 35.5 3.5 777.532 124 38 33 35.5 3.5 781
33 125 41 29 35 3 78434 126 38 28 33 1 78535 127 46 26 36 4 78936 128 43 24 33.5 1.5 790.5
37 129 40 18 29 -3 787.538 130 40 25 32.5 0.5 78839 131 38 20 29 -3 78540 132 44 16 30 -2 783
41 133 42 19 30.5 -1.5 781.542 134 41 21 31 -1 780.543 135 34 14 24 -8 772.544 136 33 10 21.5 -10.5 76245 137 40 18 29 -3 75946 138 40 26 33 1 76047 139 42 20 31 -1 75948 140 37 17 27 -5 75449 141 34 16 25 -7 74750 142 39 20 29.5 -2.5 744.551 143 41 16 28.5 -3.5 74152 144 40 15 27.5 -4.5 736.553 145 39 30 34.5 2.5 739
54 146 47 32 39.5 7.5 746.555 147 50 27 38.5 6.5 75356 148 51 31 41 9 76257 149 49 34 41.5 9.5 771.5
58 150 54 30 42 10 781.559 151 56 33 44.5 12.5 79460 152 58 32 45 13 80761 153 51 35 43 11 818
62 154 49 30 39.5 7.5 825.563 155 40 32 36 4 829.564 156 51 28 39.5 7.5 83765 157 53 26 39.5 7.5 844.5
66 158 47 28 37.5 5.5 85067 159 53 25 39 7 85768 160 58 27 42.5 10.5 867.569 161 59 30 44.5 12.5 88070 162 58 32 45 13 89371 163 44 35 39.5 7.5 900.572 164 38 22 30 -2 898.573 165 45 17 31 -1 897.574 166 52 18 35 3 900.575 167 58 24 41 9 909.576 168 61 24 42.5 10.5 92077 169 58 34 46 14 93478 170 59 30 44.5 12.5 946.5
79 171 62 30 46 14 960.580 172 63 24 43.5 11.5 97281 173 65 34 49.5 17.5 989.582 174 67 30 48.5 16.5 1006
83 175 70 30 50 18 102484 176 70 35 52.5 20.5 1044.585 177 69 30 49.5 17.5 106286 178 66 41 53.5 21.5 1083.5
87 179 54 40 47 15 1098.588 180 51 26 38.5 6.5 110589 181 55 26 40.5 8.5 1113.590 182 63 33 48 16 1129.5
91 183 65 37 51 19 1148.592 184 49 36 42.5 10.5 115993 185 55 32 43.5 11.5 1170.594 186 55 27 41 9 1179.595 187 59 29 44 12 1191.596 188 57 40 48.5 16.5 120897 189 55 33 44 12 122098 190 57 30 43.5 11.5 1231.599 191 64 34 49 17 1248.5100 192 67 38 52.5 20.5 1269101 193 57 32 44.5 12.5 1281.5102 194 63 26 44.5 12.5 1294103 195 67 38 52.5 20.5 1314.5
104 196 72 36 54 22 1336.5105 197 75 35 55 23 1359.5106 198 64 41 52.5 20.5 1380107 199 47 32 39.5 7.5 1387.5
108 200 59 35 47 15 1402.5109 201 70 33 51.5 19.5 1422110 202 72 36 54 22 1444111 203 74 40 57 25 1469
112 204 75 41 58 26 1495113 205 67 35 51 19 1514114 206 68 36 52 20 1534115 207 62 44 53 21 1555
116 208 68 41 54.5 22.5 1577.5
117 209 67 40 53.5 21.5 1599118 210 49 34 41.5 9.5 1608.5119 211 58 35 46.5 14.5 1623120 212 63 40 51.5 19.5 1642.5
121 213 63 38 50.5 18.5 1661122 214 73 35 54 22 1683123 215 76 40 58 26 1709124 216 79 41 60 28 1737
125 217 78 42 60 28 1765126 218 74 43 58.5 26.5 1791.5127 219 73 39 56 24 1815.5128 220 75 42 58.5 26.5 1842129 221 76 45 60.5 28.5 1870.5130 222 77 42 59.5 27.5 1898131 223 78 44 61 29 1927132 224 80 46 63 31 1958133 225 80 46 63 31 1989134 226 81 43 62 30 2019135 227 83 42 62.5 30.5 2049.5136 228 85 47 66 34 2083.5137 229 79 49 64 32 2115.5
138 230 61 47 54 22 2137.5139 231 65 45 55 23 2160.5140 232 70 39 54.5 22.5 2183141 233 74 40 57 25 2208
142 234 73 49 61 29 2237143 235 73 46 59.5 27.5 2264.5144 236 73 41 57 25 2289.5145 237 79 43 61 29 2318.5
146 238 81 45 63 31 2349.5147 239 81 50 65.5 33.5 2383148 240 79 46 62.5 30.5 2413.5149 241 78 45 61.5 29.5 2443
150 242 77 44 60.5 28.5 2471.5151 243 79 44 61.5 29.5 2501152 244 84 45 64.5 32.5 2533.5153 245 83 46 64.5 32.5 2566154 246 81 48 64.5 32.5 2598.5155 247 82 49 65.5 33.5 2632156 248 82 46 64 32 2664157 249 79 46 62.5 30.5 2694.5158 250 77 43 60 28 2722.5159 251 82 43 62.5 30.5 2753160 252 77 48 62.5 30.5 2783.5161 253 72 43 57.5 25.5 2809162 254 80 46 63 31 2840
163 255 86 50 68 36 2876164 256 91 55 73 41 2917165 257 93 53 73 41 2958166 258 94 52 73 41 2999
167 259 92 57 74.5 42.5 3041.5168 260 93 58 75.5 43.5 3085169 261 92 55 73.5 41.5 3126.5170 262 96 59 77.5 45.5 3172
171 263 94 61 77.5 45.5 3217.5172 264 92 60 76 44 3261.5173 265 90 60 75 43 3304.5174 266 91 62 76.5 44.5 3349
175 267 91 54 72.5 40.5 3389.5176 268 88 56 72 40 3429.5177 269 92 55 73.5 41.5 3471178 270 88 59 73.5 41.5 3512.5179 271 92 51 71.5 39.5 3552180 272 94 57 75.5 43.5 3595.5181 273 78 57 67.5 35.5 3631182 274 73 54 63.5 31.5 3662.5183 275 85 51 68 36 3698.5184 276 88 56 72 40 3738.5185 277 89 58 73.5 41.5 3780186 278 90 55 72.5 40.5 3820.5187 279 94 62 78 46 3866.5
188 280 93 56 74.5 42.5 3909189 281 97 58 77.5 45.5 3954.5190 282 96 61 78.5 46.5 4001191 283 97 61 79 47 4048
192 284 96 60 78 46 4094193 285 96 59 77.5 45.5 4139.5194 286 95 63 79 47 4186.5195 287 95 64 79.5 47.5 4234
196 288 95 58 76.5 44.5 4278.5197 289 93 63 78 46 4324.5198 290 86 61 73.5 41.5 4366199 291 79 55 67 35 4401
200 292 81 56 68.5 36.5 4437.5201 293 85 51 68 36 4473.5202 294 89 58 73.5 41.5 4515203 295 94 57 75.5 43.5 4558.5204 296 97 67 82 50 4608.5205 297 94 59 76.5 44.5 4653206 298 94 61 77.5 45.5 4698.5207 299 97 61 79 47 4745.5208 300 93 60 76.5 44.5 4790209 301 85 60 72.5 40.5 4830.5210 302 84 54 69 37 4867.5211 303 89 55 72 40 4907.5212 304 90 56 73 41 4948.5
213 305 92 56 74 42 4990.5214 306 93 59 76 44 5034.5215 307 94 56 75 43 5077.5216 308 94 56 75 43 5120.5
217 309 96 56 76 44 5164.5218 310 90 58 74 42 5206.5219 311 84 63 73.5 41.5 5248220 312 87 57 72 40 5288
221 313 92 58 75 43 5331222 314 94 62 78 46 5377223 315 96 66 81 49 5426224 316 95 55 75 43 5469
225 317 93 56 74.5 42.5 5511.5
226 318 92 57 74.5 42.5 5554227 319 93 55 74 42 5596228 320 94 64 79 47 5643229 321 90 54 72 40 5683
230 322 94 60 77 45 5728231 323 87 63 75 43 5771232 324 86 59 72.5 40.5 5811.5233 325 87 56 71.5 39.5 5851
234 326 89 57 73 41 5892235 327 85 55 70 38 5930236 328 82 57 69.5 37.5 5967.5237 329 66 56 61 29 5996.5238 330 72 51 61.5 29.5 6026239 331 78 45 61.5 29.5 6055.5240 332 82 45 63.5 31.5 6087241 333 85 50 67.5 35.5 6122.5242 334 87 49 68 36 6158.5243 335 87 55 71 39 6197.5244 336 88 53 70.5 38.5 6236245 337 91 52 71.5 39.5 6275.5246 338 80 55 67.5 35.5 6311
247 339 75 49 62 30 6341248 340 78 48 63 31 6372249 341 81 51 66 34 6406250 342 80 56 68 36 6442
251 343 86 57 71.5 39.5 6481.5252 344 88 59 73.5 41.5 6523253 345 85 56 70.5 38.5 6561.5254 346 85 54 69.5 37.5 6599
255 347 84 52 68 36 6635256 348 72 55 63.5 31.5 6666.5257 349 75 52 63.5 31.5 6698258 350 78 51 64.5 32.5 6730.5
259 351 77 50 63.5 31.5 6762260 352 76 48 62 30 6792261 353 56 50 53 21 6813262 354 62 49 55.5 23.5 6836.5263 355 70 51 60.5 28.5 6865264 356 71 51 61 29 6894265 357 72 51 61.5 29.5 6923.5266 358 72 47 59.5 27.5 6951267 359 66 50 58 26 6977268 360 74 44 59 27 7004269 361 73 47 60 28 7032270 362 77 49 63 31 7063271 363 75 47 61 29 7092 82 964.5 length of freeze (day) 62272 364 68 51 59.5 27.5 7119.5 144 736.5 frost index (oF-day)228273 365 66 49 57.5 25.5 7145 average temperature 51.6274 366 64 48 56 24 7169
1940-1941 day of frost year degree cumulative
day of year (consecutive date) max. temp. min. temp avg. temp day (
oF) degree day (
oF)274 1 64 38 51 19 19275 2 70 42 56 24 43276 3 66 43 54.5 22.5 65.5277 4 65 38 51.5 19.5 85278 5 59 47 53 21 106279 6 63 38 50.5 18.5 124.5280 7 67 41 54 22 146.5281 8 67 45 56 24 170.5282 9 65 40 52.5 20.5 191283 10 67 44 55.5 23.5 214.5284 11 67 38 52.5 20.5 235
285 12 69 39 54 22 257286 13 69 39 54 22 279287 14 72 42 57 25 304288 15 68 38 53 21 325
289 16 70 37 53.5 21.5 346.5290 17 71 36 53.5 21.5 368291 18 72 38 55 23 391292 19 73 39 56 24 415
293 20 73 37 55 23 438294 21 70 36 53 21 459295 22 70 39 54.5 22.5 481.5296 23 70 43 56.5 24.5 506
297 24 68 38 53 21 527298 25 67 41 54 22 549299 26 54 35 44.5 12.5 561.5300 27 46 34 40 8 569.5301 28 49 31 40 8 577.5302 29 51 28 39.5 7.5 585303 30 52 35 43.5 11.5 596.5304 31 54 28 41 9 605.5305 32 56 27 41.5 9.5 615306 33 60 32 46 14 629307 34 51 37 44 12 641308 35 48 27 37.5 5.5 646.5309 36 47 24 35.5 3.5 650
310 37 57 26 41.5 9.5 659.5311 38 60 29 44.5 12.5 672312 39 55 35 45 13 685313 40 49 28 38.5 6.5 691.5
314 41 41 22 31.5 -0.5 691315 42 40 15 27.5 -4.5 686.5316 43 41 18 29.5 -2.5 684317 44 45 15 30 -2 682
318 45 46 17 31.5 -0.5 681.5319 46 49 18 33.5 1.5 683320 47 51 20 35.5 3.5 686.5321 48 52 24 38 6 692.5
322 49 39 30 34.5 2.5 695323 50 41 32 36.5 4.5 699.5324 51 34 30 32 0 699.5325 52 36 31 33.5 1.5 701326 53 37 25 31 -1 700327 54 47 26 36.5 4.5 704.5
0
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1600
0 50 100 150 200 250
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day of frost year
Blanding, UT
1939-1940
328 55 44 23 33.5 1.5 706
329 56 49 24 36.5 4.5 710.5330 57 42 21 31.5 -0.5 710331 58 44 21 32.5 0.5 710.5332 59 48 23 35.5 3.5 714
333 60 48 25 36.5 4.5 718.5334 61 52 26 39 7 725.5335 62 53 27 40 8 733.5336 63 54 27 40.5 8.5 742
337 64 54 24 39 7 749338 65 52 24 38 6 755339 66 52 25 38.5 6.5 761.5340 67 54 25 39.5 7.5 769341 68 54 26 40 8 777342 69 53 23 38 6 783343 70 51 26 38.5 6.5 789.5344 71 44 32 38 6 795.5345 72 38 31 34.5 2.5 798346 73 32 21 26.5 -5.5 792.5347 74 33 8 20.5 -11.5 781348 75 37 -4 16.5 -15.5 765.5349 76 35 -2 16.5 -15.5 750
350 77 33 -2 15.5 -16.5 733.5351 78 37 24 30.5 -1.5 732352 79 40 26 33 1 733353 80 35 24 29.5 -2.5 730.5
354 81 33 21 27 -5 725.5355 82 33 17 25 -7 718.5356 83 32 14 23 -9 709.5357 84 33 12 22.5 -9.5 700
358 85 41 24 32.5 0.5 700.5359 86 49 20 34.5 2.5 703360 87 53 14 33.5 1.5 704.5361 88 41 14 27.5 -4.5 700
362 89 50 24 37 5 705363 90 42 31 36.5 4.5 709.5364 91 41 31 36 4 713.5365 92 40 26 33 1 714.51 93 43 15 29 -3 711.52 94 42 13 27.5 -4.5 7073 95 32 8 20 -12 6954 96 25 13 19 -13 6825 97 34 20 27 -5 6776 98 34 15 24.5 -7.5 669.57 99 42 19 30.5 -1.5 6688 100 45 16 30.5 -1.5 666.59 101 52 14 33 1 667.5
10 102 56 23 39.5 7.5 67511 103 44 29 36.5 4.5 679.512 104 37 30 33.5 1.5 68113 105 44 26 35 3 684
14 106 45 23 34 2 68615 107 38 22 30 -2 68416 108 37 19 28 -4 68017 109 38 11 24.5 -7.5 672.5
18 110 38 14 26 -6 666.519 111 43 16 29.5 -2.5 66420 112 40 26 33 1 66521 113 39 18 28.5 -3.5 661.5
22 114 34 23 28.5 -3.5 65823 115 41 15 28 -4 65424 116 31 20 25.5 -6.5 647.525 117 50 20 35 3 650.526 118 42 17 29.5 -2.5 64827 119 54 23 38.5 6.5 654.528 120 53 25 39 7 661.529 121 46 29 37.5 5.5 66730 122 45 24 34.5 2.5 669.531 123 41 22 31.5 -0.5 66932 124 41 16 28.5 -3.5 665.533 125 39 15 27 -5 660.534 126 43 13 28 -4 656.5
35 127 44 12 28 -4 652.536 128 46 15 30.5 -1.5 65137 129 41 16 28.5 -3.5 647.538 130 45 31 38 6 653.5
39 131 39 29 34 2 655.540 132 40 22 31 -1 654.541 133 48 27 37.5 5.5 66042 134 50 31 40.5 8.5 668.5
43 135 45 32 38.5 6.5 67544 136 44 25 34.5 2.5 677.545 137 49 26 37.5 5.5 68346 138 48 30 39 7 690
47 139 52 27 39.5 7.5 697.548 140 50 32 41 9 706.549 141 46 34 40 8 714.550 142 46 32 39 7 721.551 143 42 31 36.5 4.5 72652 144 48 32 40 8 73453 145 49 32 40.5 8.5 742.554 146 50 32 41 9 751.555 147 41 32 36.5 4.5 75656 148 47 31 39 7 76357 149 48 26 37 5 76858 150 50 27 38.5 6.5 774.559 151 56 28 42 10 784.5
60 152 47 34 40.5 8.5 79361 153 46 31 38.5 6.5 799.562 154 47 27 37 5 804.563 155 46 28 37 5 809.5
64 156 47 30 38.5 6.5 81665 157 48 28 38 6 82266 158 47 27 37 5 82767 159 54 22 38 6 833
68 160 50 25 37.5 5.5 838.569 161 46 18 32 0 838.570 162 54 21 37.5 5.5 84471 163 53 23 38 6 850
72 164 46 32 39 7 857
73 165 42 32 37 5 86274 166 42 29 35.5 3.5 865.575 167 52 26 39 7 872.576 168 56 30 43 11 883.5
77 169 61 30 45.5 13.5 89778 170 59 30 44.5 12.5 909.579 171 56 34 45 13 922.580 172 56 34 45 13 935.5
81 173 57 36 46.5 14.5 95082 174 55 31 43 11 96183 175 43 25 34 2 96384 176 47 24 35.5 3.5 966.585 177 47 26 36.5 4.5 97186 178 52 26 39 7 97887 179 56 29 42.5 10.5 988.588 180 56 36 46 14 1002.589 181 58 34 46 14 1016.590 182 65 32 48.5 16.5 103391 183 50 31 40.5 8.5 1041.592 184 51 28 39.5 7.5 104993 185 51 30 40.5 8.5 1057.5
94 186 56 26 41 9 1066.595 187 54 28 41 9 1075.596 188 50 30 40 8 1083.597 189 54 23 38.5 6.5 1090
98 190 58 31 44.5 12.5 1102.599 191 62 28 45 13 1115.5100 192 57 42 49.5 17.5 1133101 193 44 38 41 9 1142
102 194 43 33 38 6 1148103 195 47 30 38.5 6.5 1154.5104 196 51 32 41.5 9.5 1164105 197 57 29 43 11 1175
106 198 58 35 46.5 14.5 1189.5107 199 51 29 40 8 1197.5108 200 38 26 32 0 1197.5109 201 42 26 34 2 1199.5110 202 51 24 37.5 5.5 1205111 203 50 32 41 9 1214112 204 51 36 43.5 11.5 1225.5113 205 53 31 42 10 1235.5114 206 60 33 46.5 14.5 1250115 207 53 38 45.5 13.5 1263.5116 208 56 42 49 17 1280.5117 209 53 40 46.5 14.5 1295118 210 52 37 44.5 12.5 1307.5
119 211 59 37 48 16 1323.5120 212 65 42 53.5 21.5 1345121 213 63 43 53 21 1366122 214 53 41 47 15 1381
123 215 65 40 52.5 20.5 1401.5124 216 66 44 55 23 1424.5125 217 71 37 54 22 1446.5126 218 70 43 56.5 24.5 1471
127 219 74 38 56 24 1495128 220 76 43 59.5 27.5 1522.5129 221 78 48 63 31 1553.5130 222 82 46 64 32 1585.5
131 223 80 52 66 34 1619.5132 224 81 40 60.5 28.5 1648133 225 79 46 62.5 30.5 1678.5134 226 73 41 57 25 1703.5135 227 69 37 53 21 1724.5136 228 79 43 61 29 1753.5137 229 77 44 60.5 28.5 1782138 230 73 42 57.5 25.5 1807.5139 231 52 32 42 10 1817.5140 232 62 36 49 17 1834.5141 233 62 44 53 21 1855.5142 234 61 42 51.5 19.5 1875143 235 58 42 50 18 1893
144 236 65 46 55.5 23.5 1916.5145 237 71 43 57 25 1941.5146 238 73 43 58 26 1967.5147 239 71 44 57.5 25.5 1993
148 240 71 47 59 27 2020149 241 72 41 56.5 24.5 2044.5150 242 67 40 53.5 21.5 2066151 243 70 41 55.5 23.5 2089.5
152 244 76 48 62 30 2119.5153 245 78 45 61.5 29.5 2149154 246 71 47 59 27 2176155 247 74 44 59 27 2203
156 248 70 43 56.5 24.5 2227.5157 249 72 43 57.5 25.5 2253158 250 68 49 58.5 26.5 2279.5159 251 55 43 49 17 2296.5160 252 54 40 47 15 2311.5161 253 64 38 51 19 2330.5162 254 68 42 55 23 2353.5163 255 75 46 60.5 28.5 2382164 256 80 46 63 31 2413165 257 83 52 67.5 35.5 2448.5166 258 79 50 64.5 32.5 2481167 259 83 52 67.5 35.5 2516.5168 260 86 52 69 37 2553.5
169 261 86 52 69 37 2590.5170 262 86 42 64 32 2622.5171 263 84 50 67 35 2657.5172 264 86 51 68.5 36.5 2694
173 265 89 54 71.5 39.5 2733.5174 266 86 60 73 41 2774.5175 267 83 58 70.5 38.5 2813176 268 81 51 66 34 2847
177 269 83 48 65.5 33.5 2880.5178 270 80 48 64 32 2912.5179 271 75 42 58.5 26.5 2939180 272 78 43 60.5 28.5 2967.5
181 273 80 47 63.5 31.5 2999
182 274 82 51 66.5 34.5 3033.5183 275 85 48 66.5 34.5 3068184 276 87 54 70.5 38.5 3106.5185 277 87 53 70 38 3144.5
186 278 83 56 69.5 37.5 3182187 279 85 50 67.5 35.5 3217.5188 280 88 55 71.5 39.5 3257189 281 88 57 72.5 40.5 3297.5
190 282 89 57 73 41 3338.5191 283 89 52 70.5 38.5 3377192 284 83 56 69.5 37.5 3414.5193 285 83 52 67.5 35.5 3450194 286 87 54 70.5 38.5 3488.5195 287 90 58 74 42 3530.5196 288 86 60 73 41 3571.5197 289 88 52 70 38 3609.5198 290 91 60 75.5 43.5 3653199 291 89 56 72.5 40.5 3693.5200 292 81 62 71.5 39.5 3733201 293 86 53 69.5 37.5 3770.5202 294 89 58 73.5 41.5 3812
203 295 93 56 74.5 42.5 3854.5204 296 97 57 77 45 3899.5205 297 82 58 70 38 3937.5206 298 81 53 67 35 3972.5
207 299 83 52 67.5 35.5 4008208 300 84 55 69.5 37.5 4045.5209 301 85 51 68 36 4081.5210 302 87 56 71.5 39.5 4121
211 303 90 56 73 41 4162212 304 90 55 72.5 40.5 4202.5213 305 88 53 70.5 38.5 4241214 306 90 52 71 39 4280
215 307 93 55 74 42 4322216 308 90 59 74.5 42.5 4364.5217 309 89 57 73 41 4405.5218 310 89 58 73.5 41.5 4447219 311 87 60 73.5 41.5 4488.5220 312 82 57 69.5 37.5 4526221 313 80 58 69 37 4563222 314 74 57 65.5 33.5 4596.5223 315 81 54 67.5 35.5 4632224 316 85 56 70.5 38.5 4670.5225 317 88 49 68.5 36.5 4707226 318 85 60 72.5 40.5 4747.5227 319 83 59 71 39 4786.5
228 320 78 58 68 36 4822.5229 321 78 60 69 37 4859.5230 322 83 56 69.5 37.5 4897231 323 87 58 72.5 40.5 4937.5
232 324 89 55 72 40 4977.5233 325 85 57 71 39 5016.5234 326 85 53 69 37 5053.5235 327 84 49 66.5 34.5 5088
236 328 84 49 66.5 34.5 5122.5237 329 83 50 66.5 34.5 5157238 330 82 50 66 34 5191239 331 83 49 66 34 5225
240 332 83 51 67 35 5260241 333 67 55 61 29 5289242 334 77 48 62.5 30.5 5319.5243 335 80 48 64 32 5351.5244 336 82 53 67.5 35.5 5387245 337 83 49 66 34 5421246 338 77 44 60.5 28.5 5449.5247 339 78 39 58.5 26.5 5476248 340 82 46 64 32 5508249 341 86 48 67 35 5543250 342 82 48 65 33 5576251 343 65 41 53 21 5597252 344 72 38 55 23 5620
253 345 80 42 61 29 5649254 346 81 49 65 33 5682255 347 78 50 64 32 5714256 348 57 50 53.5 21.5 5735.5
257 349 62 46 54 22 5757.5258 350 68 46 57 25 5782.5259 351 73 42 57.5 25.5 5808260 352 73 50 61.5 29.5 5837.5
261 353 74 54 64 32 5869.5262 354 77 53 65 33 5902.5263 355 77 48 62.5 30.5 5933264 356 71 41 56 24 5957
265 357 52 38 45 13 5970266 358 57 37 47 15 5985267 359 66 39 52.5 20.5 6005.5268 360 68 38 53 21 6026.5 72 798 length of freeze (day) 57
269 361 72 40 56 24 6050.5 129 647.5 frost index (oF-day)150.5270 362 72 44 58 26 6076.5 average temperature 48.8271 363 64 48 56 24 6100.5272 364 60 45 52.5 20.5 6121273 365 68 39 53.5 21.5 6142.5
1946-1947 day of frost year degree cumulative
day of year (consecutive date) max. temp. min. temp avg. temp day (
oF) degree day (
oF)274 1 65 48 56.5 24.5 24.5
275 2 62 52 57 25 49.5276 3 63 40 51.5 19.5 69277 4 63 41 52 20 89278 5 54 38 46 14 103
279 6 61 36 48.5 16.5 119.5280 7 55 29 42 10 129.5281 8 60 32 46 14 143.5282 9 64 32 48 16 159.5283 10 49 38 43.5 11.5 171284 11 49 21 35 3 174
0
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1400
0 50 100 150 200 250
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day of frost year
Blanding, UT
1940-1941
285 12 52 25 38.5 6.5 180.5
286 13 64 34 49 17 197.5287 14 67 30 48.5 16.5 214288 15 66 42 54 22 236289 16 63 35 49 17 253
290 17 56 29 42.5 10.5 263.5291 18 54 30 42 10 273.5292 19 57 24 40.5 8.5 282293 20 64 29 46.5 14.5 296.5
294 21 67 31 49 17 313.5295 22 69 38 53.5 21.5 335296 23 66 35 50.5 18.5 353.5297 24 60 34 47 15 368.5298 25 64 31 47.5 15.5 384299 26 62 31 46.5 14.5 398.5300 27 51 38 44.5 12.5 411301 28 56 43 49.5 17.5 428.5302 29 49 40 44.5 12.5 441303 30 48 30 39 7 448304 31 50 26 38 6 454305 32 46 20 33 1 455306 33 42 25 33.5 1.5 456.5
307 34 43 31 37 5 461.5308 35 43 21 32 0 461.5309 36 46 22 34 2 463.5310 37 50 22 36 4 467.5
311 38 47 23 35 3 470.5312 39 44 25 34.5 2.5 473313 40 42 14 28 -4 469314 41 36 9 22.5 -9.5 459.5
315 42 41 22 31.5 -0.5 459316 43 49 29 39 7 466317 44 49 34 41.5 9.5 475.5318 45 42 32 37 5 480.5
319 46 45 27 36 4 484.5320 47 43 22 32.5 0.5 485321 48 47 24 35.5 3.5 488.5322 49 49 25 37 5 493.5323 50 47 25 36 4 497.5324 51 51 32 41.5 9.5 507325 52 51 32 41.5 9.5 516.5326 53 54 29 41.5 9.5 526327 54 50 34 42 10 536328 55 40 28 34 2 538329 56 43 25 34 2 540330 57 47 22 34.5 2.5 542.5331 58 50 25 37.5 5.5 548
332 59 56 30 43 11 559333 60 55 29 42 10 569334 61 65 26 45.5 13.5 582.5335 62 52 30 41 9 591.5
336 63 55 28 41.5 9.5 601337 64 58 30 44 12 613338 65 54 28 41 9 622339 66 56 33 44.5 12.5 634.5
340 67 50 36 43 11 645.5341 68 46 30 38 6 651.5342 69 41 18 29.5 -2.5 649343 70 45 21 33 1 650
344 71 45 15 30 -2 648345 72 54 21 37.5 5.5 653.5346 73 52 25 38.5 6.5 660347 74 51 25 38 6 666348 75 53 26 39.5 7.5 673.5349 76 50 24 37 5 678.5350 77 51 25 38 6 684.5351 78 47 18 32.5 0.5 685352 79 43 17 30 -2 683353 80 44 16 30 -2 681354 81 49 13 31 -1 680355 82 44 19 31.5 -0.5 679.5356 83 47 15 31 -1 678.5
357 84 45 28 36.5 4.5 683358 85 46 31 38.5 6.5 689.5359 86 53 33 43 11 700.5360 87 45 30 37.5 5.5 706
361 88 40 30 35 3 709362 89 29 14 21.5 -10.5 698.5363 90 30 8 19 -13 685.5364 91 34 11 22.5 -9.5 676
365 92 32 9 20.5 -11.5 664.51 93 32 9 20.5 -11.5 6532 94 27 10 18.5 -13.5 639.53 95 31 17 24 -8 631.5
4 96 31 8 19.5 -12.5 6195 97 44 10 27 -5 6146 98 38 13 25.5 -6.5 607.57 99 33 17 25 -7 600.58 100 38 19 28.5 -3.5 5979 101 35 15 25 -7 59010 102 36 14 25 -7 58311 103 29 8 18.5 -13.5 569.512 104 27 14 20.5 -11.5 55813 105 37 11 24 -8 55014 106 33 19 26 -6 54415 107 28 15 21.5 -10.5 533.516 108 24 6 15 -17 516.5
17 109 22 -5 8.5 -23.5 49318 110 17 -3 7 -25 46819 111 36 5 20.5 -11.5 456.520 112 35 7 21 -11 445.5
21 113 45 18 31.5 -0.5 44522 114 42 15 28.5 -3.5 441.523 115 41 13 27 -5 436.524 116 41 15 28 -4 432.5
25 117 45 21 33 1 433.526 118 51 24 37.5 5.5 43927 119 49 24 36.5 4.5 443.528 120 44 24 34 2 445.5
29 121 45 29 37 5 450.5
30 122 30 15 22.5 -9.5 44131 123 33 8 20.5 -11.5 429.532 124 45 14 29.5 -2.5 42733 125 41 19 30 -2 425
34 126 53 15 34 2 42735 127 55 26 40.5 8.5 435.536 128 54 25 39.5 7.5 44337 129 57 28 42.5 10.5 453.5
38 130 54 25 39.5 7.5 46139 131 51 25 38 6 46740 132 44 26 35 3 47041 133 42 31 36.5 4.5 474.542 134 49 25 37 5 479.543 135 46 25 35.5 3.5 48344 136 56 32 44 12 49545 137 57 34 45.5 13.5 508.546 138 56 27 41.5 9.5 51847 139 54 29 41.5 9.5 527.548 140 55 34 44.5 12.5 54049 141 46 22 34 2 54250 142 49 22 35.5 3.5 545.5
51 143 48 22 35 3 548.552 144 49 18 33.5 1.5 55053 145 51 23 37 5 55554 146 52 29 40.5 8.5 563.5
55 147 54 29 41.5 9.5 57356 148 49 19 34 2 57557 149 53 26 39.5 7.5 582.558 150 51 36 43.5 11.5 594
59 151 39 29 34 2 59660 152 45 15 30 -2 59461 153 42 25 33.5 1.5 595.562 154 46 15 30.5 -1.5 594
63 155 47 28 37.5 5.5 599.564 156 41 22 31.5 -0.5 59965 157 45 23 34 2 60166 158 48 24 36 4 60567 159 46 25 35.5 3.5 608.568 160 49 27 38 6 614.569 161 58 22 40 8 622.570 162 49 25 37 5 627.571 163 47 29 38 6 633.572 164 54 20 37 5 638.573 165 54 27 40.5 8.5 64774 166 55 27 41 9 65675 167 60 29 44.5 12.5 668.5
76 168 63 35 49 17 685.577 169 62 28 45 13 698.578 170 62 36 49 17 715.579 171 63 29 46 14 729.5
80 172 65 32 48.5 16.5 74681 173 64 38 51 19 76582 174 56 37 46.5 14.5 779.583 175 50 28 39 7 786.5
84 176 56 26 41 9 795.585 177 66 28 47 15 810.586 178 66 28 47 15 825.587 179 64 36 50 18 843.5
88 180 62 32 47 15 858.589 181 63 31 47 15 873.590 182 64 32 48 16 889.591 183 62 32 47 15 904.592 184 31 31 31 -1 903.593 185 58 37 47.5 15.5 91994 186 48 30 39 7 92695 187 50 28 39 7 93396 188 57 25 41 9 94297 189 58 35 46.5 14.5 956.598 190 59 31 45 13 969.599 191 54 44 49 17 986.5100 192 55 35 45 13 999.5
101 193 52 28 40 8 1007.5102 194 51 32 41.5 9.5 1017103 195 63 28 45.5 13.5 1030.5104 196 70 41 55.5 23.5 1054
105 197 71 44 57.5 25.5 1079.5106 198 60 32 46 14 1093.5107 199 71 30 50.5 18.5 1112108 200 68 41 54.5 22.5 1134.5
109 201 66 32 49 17 1151.5110 202 73 33 53 21 1172.5111 203 72 38 55 23 1195.5112 204 63 37 50 18 1213.5
113 205 60 28 44 12 1225.5114 206 56 40 48 16 1241.5115 207 61 26 43.5 11.5 1253116 208 65 36 50.5 18.5 1271.5117 209 60 36 48 16 1287.5118 210 59 38 48.5 16.5 1304119 211 66 35 50.5 18.5 1322.5120 212 74 37 55.5 23.5 1346121 213 80 38 59 27 1373122 214 87 53 70 38 1411123 215 88 48 68 36 1447124 216 91 50 70.5 38.5 1485.5125 217 90 52 71 39 1524.5
126 218 84 50 67 35 1559.5127 219 85 50 67.5 35.5 1595128 220 83 45 64 32 1627129 221 69 40 54.5 22.5 1649.5
130 222 51 38 44.5 12.5 1662131 223 49 35 42 10 1672132 224 62 41 51.5 19.5 1691.5133 225 69 41 55 23 1714.5
134 226 75 44 59.5 27.5 1742135 227 61 43 52 20 1762136 228 70 39 54.5 22.5 1784.5137 229 75 41 58 26 1810.5
138 230 78 42 60 28 1838.5
139 231 78 44 61 29 1867.5140 232 76 40 58 26 1893.5141 233 81 40 60.5 28.5 1922142 234 80 45 62.5 30.5 1952.5
143 235 65 50 57.5 25.5 1978144 236 75 40 57.5 25.5 2003.5145 237 81 42 61.5 29.5 2033146 238 82 50 66 34 2067
147 239 76 51 63.5 31.5 2098.5148 240 67 46 56.5 24.5 2123149 241 74 39 56.5 24.5 2147.5150 242 78 47 62.5 30.5 2178151 243 72 50 61 29 2207152 244 77 45 61 29 2236153 245 78 47 62.5 30.5 2266.5154 246 68 53 60.5 28.5 2295155 247 72 43 57.5 25.5 2320.5156 248 77 48 62.5 30.5 2351157 249 79 45 62 30 2381158 250 86 49 67.5 35.5 2416.5159 251 84 51 67.5 35.5 2452
160 252 80 52 66 34 2486161 253 75 40 57.5 25.5 2511.5162 254 64 48 56 24 2535.5163 255 67 34 50.5 18.5 2554
164 256 75 28 51.5 19.5 2573.5165 257 83 43 63 31 2604.5166 258 89 51 70 38 2642.5167 259 90 53 71.5 39.5 2682
168 260 82 50 66 34 2716169 261 70 48 59 27 2743170 262 83 47 65 33 2776171 263 85 41 63 31 2807
172 264 58 46 52 20 2827173 265 61 44 52.5 20.5 2847.5174 266 74 38 56 24 2871.5175 267 81 49 65 33 2904.5176 268 85 55 70 38 2942.5177 269 83 50 66.5 34.5 2977178 270 84 48 66 34 3011179 271 85 47 66 34 3045180 272 86 54 70 38 3083181 273 85 59 72 40 3123182 274 89 55 72 40 3163183 275 92 53 72.5 40.5 3203.5184 276 88 63 75.5 43.5 3247
185 277 92 51 71.5 39.5 3286.5186 278 90 55 72.5 40.5 3327187 279 87 59 73 41 3368188 280 84 58 71 39 3407
189 281 87 59 73 41 3448190 282 89 51 70 38 3486191 283 91 59 75 43 3529192 284 92 52 72 40 3569
193 285 92 46 69 37 3606194 286 94 61 77.5 45.5 3651.5195 287 92 63 77.5 45.5 3697196 288 85 60 72.5 40.5 3737.5
197 289 84 52 68 36 3773.5198 290 87 55 71 39 3812.5199 291 92 56 74 42 3854.5200 292 90 54 72 40 3894.5201 293 94 57 75.5 43.5 3938202 294 90 63 76.5 44.5 3982.5203 295 85 58 71.5 39.5 4022204 296 90 52 71 39 4061205 297 91 54 72.5 40.5 4101.5206 298 92 55 73.5 41.5 4143207 299 94 58 76 44 4187208 300 96 67 81.5 49.5 4236.5209 301 96 65 80.5 48.5 4285
210 302 96 61 78.5 46.5 4331.5211 303 96 62 79 47 4378.5212 304 95 64 79.5 47.5 4426213 305 94 62 78 46 4472
214 306 94 61 77.5 45.5 4517.5215 307 93 63 78 46 4563.5216 308 78 52 65 33 4596.5217 309 81 55 68 36 4632.5
218 310 91 54 72.5 40.5 4673219 311 91 63 77 45 4718220 312 90 60 75 43 4761221 313 82 58 70 38 4799
222 314 82 59 70.5 38.5 4837.5223 315 83 56 69.5 37.5 4875224 316 87 55 71 39 4914225 317 85 55 70 38 4952226 318 81 55 68 36 4988227 319 85 57 71 39 5027228 320 68 58 63 31 5058229 321 74 55 64.5 32.5 5090.5230 322 81 50 65.5 33.5 5124231 323 85 52 68.5 36.5 5160.5232 324 83 52 67.5 35.5 5196233 325 72 55 63.5 31.5 5227.5234 326 70 55 62.5 30.5 5258
235 327 77 54 65.5 33.5 5291.5236 328 77 50 63.5 31.5 5323237 329 81 53 67 35 5358238 330 84 54 69 37 5395
239 331 82 54 68 36 5431240 332 78 56 67 35 5466241 333 81 56 68.5 36.5 5502.5242 334 84 53 68.5 36.5 5539
243 335 89 58 73.5 41.5 5580.5244 336 90 56 73 41 5621.5245 337 91 57 74 42 5663.5246 338 91 57 74 42 5705.5 1000
1200
)
Blanding, UT
247 339 90 57 73.5 41.5 5747
248 340 87 53 70 38 5785249 341 88 57 72.5 40.5 5825.5250 342 84 54 69 37 5862.5251 343 78 53 65.5 33.5 5896
252 344 69 49 59 27 5923253 345 76 47 61.5 29.5 5952.5254 346 70 40 55 23 5975.5255 347 74 40 57 25 6000.5
256 348 80 40 60 28 6028.5257 349 79 42 60.5 28.5 6057258 350 80 39 59.5 27.5 6084.5259 351 82 45 63.5 31.5 6116260 352 81 49 65 33 6149261 353 78 56 67 35 6184262 354 78 51 64.5 32.5 6216.5263 355 79 50 64.5 32.5 6249264 356 83 42 62.5 30.5 6279.5265 357 83 45 64 32 6311.5266 358 86 50 68 36 6347.5267 359 85 52 68.5 36.5 6384268 360 84 55 69.5 37.5 6421.5 88 709 length of freeze (day) 38269 361 83 52 67.5 35.5 6457 126 427 frost index (oF-day)282270 362 84 52 68 36 6493 average temperature 50.1271 363 84 50 67 35 6528272 364 79 51 65 33 6561273 365 77 50 63.5 31.5 6592.5
1947-1948 day of frost year degree cumulative
day of year (consecutive date) max. temp. min. temp avg. temp day (
oF) degree day (
oF)274 1 77 41 59 27 27275 2 79 43 61 29 56276 3 79 42 60.5 28.5 84.5277 4 81 47 64 32 116.5278 5 81 44 62.5 30.5 147279 6 76 45 60.5 28.5 175.5280 7 74 48 61 29 204.5281 8 73 42 57.5 25.5 230282 9 75 43 59 27 257
283 10 68 40 54 22 279284 11 58 43 50.5 18.5 297.5285 12 62 42 52 20 317.5286 13 63 45 54 22 339.5
287 14 50 43 46.5 14.5 354288 15 61 40 50.5 18.5 372.5289 16 61 36 48.5 16.5 389290 17 65 38 51.5 19.5 408.5
291 18 68 40 54 22 430.5292 19 72 44 58 26 456.5293 20 71 42 56.5 24.5 481294 21 68 40 54 22 503
295 22 58 32 45 13 516296 23 56 30 43 11 527297 24 55 32 43.5 11.5 538.5298 25 58 27 42.5 10.5 549299 26 60 28 44 12 561300 27 63 29 46 14 575301 28 64 31 47.5 15.5 590.5302 29 63 39 51 19 609.5303 30 62 31 46.5 14.5 624304 31 66 30 48 16 640305 32 64 28 46 14 654306 33 59 32 45.5 13.5 667.5307 34 50 29 39.5 7.5 675
308 35 48 22 35 3 678309 36 51 24 37.5 5.5 683.5310 37 36 22 29 -3 680.5311 38 47 20 33.5 1.5 682
312 39 48 20 34 2 684313 40 48 24 36 4 688314 41 42 23 32.5 0.5 688.5315 42 44 16 30 -2 686.5
316 43 46 25 35.5 3.5 690317 44 48 24 36 4 694318 45 44 24 34 2 696319 46 41 16 28.5 -3.5 692.5
320 47 45 26 35.5 3.5 696321 48 49 22 35.5 3.5 699.5322 49 38 20 29 -3 696.5323 50 34 27 30.5 -1.5 695324 51 32 17 24.5 -7.5 687.5325 52 33 12 22.5 -9.5 678326 53 38 13 25.5 -6.5 671.5327 54 36 12 24 -8 663.5328 55 37 10 23.5 -8.5 655329 56 45 15 30 -2 653330 57 46 23 34.5 2.5 655.5331 58 50 26 38 6 661.5332 59 47 26 36.5 4.5 666
333 60 49 28 38.5 6.5 672.5334 61 42 34 38 6 678.5335 62 45 35 40 8 686.5336 63 45 32 38.5 6.5 693
337 64 40 28 34 2 695338 65 35 28 31.5 -0.5 694.5339 66 42 30 36 4 698.5340 67 39 28 33.5 1.5 700
341 68 34 22 28 -4 696342 69 32 18 25 -7 689343 70 31 11 21 -11 678344 71 40 5 22.5 -9.5 668.5
345 72 30 0 15 -17 651.5346 73 30 9 19.5 -12.5 639347 74 36 8 22 -10 629348 75 36 8 22 -10 619349 76 42 14 28 -4 615350 77 43 14 28.5 -3.5 611.5
0
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day of frost year
1946-1947
351 78 40 7 23.5 -8.5 603
352 79 50 15 32.5 0.5 603.5353 80 43 13 28 -4 599.5354 81 40 17 28.5 -3.5 596355 82 41 24 32.5 0.5 596.5
356 83 40 16 28 -4 592.5357 84 42 20 31 -1 591.5358 85 48 19 33.5 1.5 593359 86 46 22 34 2 595
360 87 44 21 32.5 0.5 595.5361 88 45 20 32.5 0.5 596362 89 41 20 30.5 -1.5 594.5363 90 40 24 32 0 594.5364 91 37 14 25.5 -6.5 588365 92 32 8 20 -12 5761 93 32 4 18 -14 5622 94 34 8 21 -11 5513 95 42 12 27 -5 5464 96 43 18 30.5 -1.5 544.55 97 47 23 35 3 547.56 98 45 24 34.5 2.5 5507 99 47 25 36 4 554
8 100 49 28 38.5 6.5 560.59 101 51 30 40.5 8.5 56910 102 50 28 39 7 57611 103 49 28 38.5 6.5 582.5
12 104 44 23 33.5 1.5 58413 105 44 18 31 -1 58314 106 41 18 29.5 -2.5 580.515 107 43 18 30.5 -1.5 579
16 108 43 20 31.5 -0.5 578.517 109 37 18 27.5 -4.5 57418 110 38 19 28.5 -3.5 570.519 111 37 18 27.5 -4.5 566
20 112 38 13 25.5 -6.5 559.521 113 45 19 32 0 559.522 114 48 22 35 3 562.523 115 47 25 36 4 566.524 116 47 29 38 6 572.525 117 45 20 32.5 0.5 57326 118 32 5 18.5 -13.5 559.527 119 19 -5 7 -25 534.528 120 24 -8 8 -24 510.529 121 29 1 15 -17 493.530 122 34 2 18 -14 479.531 123 37 12 24.5 -7.5 47232 124 40 11 25.5 -6.5 465.5
33 125 44 20 32 0 465.534 126 37 17 27 -5 460.535 127 34 12 23 -9 451.536 128 39 22 30.5 -1.5 450
37 129 34 25 29.5 -2.5 447.538 130 36 18 27 -5 442.539 131 38 10 24 -8 434.540 132 35 14 24.5 -7.5 427
41 133 31 15 23 -9 41842 134 18 0 9 -23 39543 135 20 -1 9.5 -22.5 372.544 136 34 -2 16 -16 356.5
45 137 35 8 21.5 -10.5 34646 138 38 10 24 -8 33847 139 44 17 30.5 -1.5 336.548 140 47 25 36 4 340.549 141 52 29 40.5 8.5 34950 142 53 34 43.5 11.5 360.551 143 53 33 43 11 371.552 144 51 27 39 7 378.553 145 51 30 40.5 8.5 38754 146 38 28 33 1 38855 147 45 28 36.5 4.5 392.556 148 49 32 40.5 8.5 40157 149 46 32 39 7 408
58 150 50 27 38.5 6.5 414.559 151 41 31 36 4 418.560 152 39 29 34 2 420.561 153 41 28 34.5 2.5 423
62 154 38 20 29 -3 42063 155 32 18 25 -7 41364 156 29 16 22.5 -9.5 403.565 157 30 2 16 -16 387.5
66 158 37 5 21 -11 376.567 159 41 15 28 -4 372.568 160 41 17 29 -3 369.569 161 33 29 31 -1 368.5
70 162 36 14 25 -7 361.571 163 38 6 22 -10 351.572 164 41 15 28 -4 347.573 165 47 24 35.5 3.5 35174 166 46 27 36.5 4.5 355.575 167 38 26 32 0 355.576 168 40 21 30.5 -1.5 35477 169 52 31 41.5 9.5 363.578 170 46 32 39 7 370.579 171 47 26 36.5 4.5 37580 172 38 29 33.5 1.5 376.581 173 39 21 30 -2 374.582 174 52 21 36.5 4.5 379
83 175 59 28 43.5 11.5 390.584 176 60 26 43 11 401.585 177 42 33 37.5 5.5 40786 178 48 21 34.5 2.5 409.5
87 179 53 25 39 7 416.588 180 59 24 41.5 9.5 42689 181 59 32 45.5 13.5 439.590 182 51 28 39.5 7.5 447
91 183 45 26 35.5 3.5 450.592 184 56 22 39 7 457.593 185 64 30 47 15 472.594 186 60 36 48 16 488.5
95 187 59 35 47 15 503.5
96 188 59 27 43 11 514.597 189 58 27 42.5 10.5 52598 190 56 28 42 10 53599 191 60 28 44 12 547
100 192 65 31 48 16 563101 193 66 45 55.5 23.5 586.5102 194 50 31 40.5 8.5 595103 195 50 25 37.5 5.5 600.5
104 196 55 26 40.5 8.5 609105 197 65 34 49.5 17.5 626.5106 198 71 40 55.5 23.5 650107 199 75 41 58 26 676108 200 77 39 58 26 702109 201 75 39 57 25 727110 202 64 29 46.5 14.5 741.5111 203 70 34 52 20 761.5112 204 72 45 58.5 26.5 788113 205 67 41 54 22 810114 206 56 33 44.5 12.5 822.5115 207 50 34 42 10 832.5116 208 62 27 44.5 12.5 845
117 209 64 37 50.5 18.5 863.5118 210 70 36 53 21 884.5119 211 76 36 56 24 908.5120 212 69 45 57 25 933.5
121 213 64 32 48 16 949.5122 214 61 40 50.5 18.5 968123 215 62 36 49 17 985124 216 66 37 51.5 19.5 1004.5
125 217 70 39 54.5 22.5 1027126 218 66 39 52.5 20.5 1047.5127 219 75 40 57.5 25.5 1073128 220 74 42 58 26 1099
129 221 60 40 50 18 1117130 222 58 34 46 14 1131131 223 62 34 48 16 1147132 224 66 33 49.5 17.5 1164.5133 225 69 33 51 19 1183.5134 226 77 40 58.5 26.5 1210135 227 80 41 60.5 28.5 1238.5136 228 84 46 65 33 1271.5137 229 85 49 67 35 1306.5138 230 82 48 65 33 1339.5139 231 72 58 65 33 1372.5140 232 77 54 65.5 33.5 1406141 233 80 42 61 29 1435
142 234 81 40 60.5 28.5 1463.5143 235 78 40 59 27 1490.5144 236 80 47 63.5 31.5 1522145 237 76 48 62 30 1552
146 238 69 50 59.5 27.5 1579.5147 239 71 44 57.5 25.5 1605148 240 73 48 60.5 28.5 1633.5149 241 78 44 61 29 1662.5
150 242 75 42 58.5 26.5 1689151 243 78 40 59 27 1716152 244 83 45 64 32 1748153 245 76 50 63 31 1779
154 246 71 45 58 26 1805155 247 71 32 51.5 19.5 1824.5156 248 75 46 60.5 28.5 1853157 249 79 43 61 29 1882158 250 81 45 63 31 1913159 251 76 56 66 34 1947160 252 84 46 65 33 1980161 253 88 50 69 37 2017162 254 88 53 70.5 38.5 2055.5163 255 82 56 69 37 2092.5164 256 84 52 68 36 2128.5165 257 86 48 67 35 2163.5166 258 85 50 67.5 35.5 2199
167 259 84 48 66 34 2233168 260 85 46 65.5 33.5 2266.5169 261 87 47 67 35 2301.5170 262 86 48 67 35 2336.5
171 263 81 50 65.5 33.5 2370172 264 76 42 59 27 2397173 265 59 43 51 19 2416174 266 64 39 51.5 19.5 2435.5
175 267 72 31 51.5 19.5 2455176 268 79 47 63 31 2486177 269 83 50 66.5 34.5 2520.5178 270 79 55 67 35 2555.5
179 271 69 48 58.5 26.5 2582180 272 83 45 64 32 2614181 273 86 62 74 42 2656182 274 86 51 68.5 36.5 2692.5183 275 87 55 71 39 2731.5184 276 86 56 71 39 2770.5185 277 86 48 67 35 2805.5186 278 88 51 69.5 37.5 2843187 279 87 55 71 39 2882188 280 90 60 75 43 2925189 281 88 52 70 38 2963190 282 89 49 69 37 3000191 283 91 46 68.5 36.5 3036.5
192 284 92 50 71 39 3075.5193 285 91 55 73 41 3116.5194 286 92 48 70 38 3154.5195 287 91 51 71 39 3193.5
196 288 89 60 74.5 42.5 3236197 289 91 57 74 42 3278198 290 93 55 74 42 3320199 291 93 61 77 45 3365
200 292 90 57 73.5 41.5 3406.5201 293 81 55 68 36 3442.5202 294 83 52 67.5 35.5 3478203 295 84 54 69 37 3515
204 296 91 56 73.5 41.5 3556.5
205 297 88 60 74 42 3598.5206 298 84 55 69.5 37.5 3636207 299 85 58 71.5 39.5 3675.5208 300 88 60 74 42 3717.5
209 301 91 56 73.5 41.5 3759210 302 86 58 72 40 3799211 303 86 54 70 38 3837212 304 90 54 72 40 3877
213 305 94 56 75 43 3920214 306 91 57 74 42 3962215 307 93 56 74.5 42.5 4004.5216 308 82 56 69 37 4041.5217 309 71 58 64.5 32.5 4074218 310 76 59 67.5 35.5 4109.5219 311 80 54 67 35 4144.5220 312 80 51 65.5 33.5 4178221 313 80 55 67.5 35.5 4213.5222 314 82 52 67 35 4248.5223 315 85 54 69.5 37.5 4286224 316 87 55 71 39 4325225 317 86 57 71.5 39.5 4364.5
226 318 87 55 71 39 4403.5227 319 86 52 69 37 4440.5228 320 89 52 70.5 38.5 4479229 321 90 54 72 40 4519
230 322 90 55 72.5 40.5 4559.5231 323 91 60 75.5 43.5 4603232 324 89 61 75 43 4646233 325 89 54 71.5 39.5 4685.5
234 326 90 57 73.5 41.5 4727235 327 85 54 69.5 37.5 4764.5236 328 76 45 60.5 28.5 4793237 329 82 55 68.5 36.5 4829.5
238 330 80 47 63.5 31.5 4861239 331 84 45 64.5 32.5 4893.5240 332 89 49 69 37 4930.5241 333 92 53 72.5 40.5 4971242 334 95 53 74 42 5013243 335 92 56 74 42 5055244 336 95 53 74 42 5097245 337 95 55 75 43 5140246 338 95 57 76 44 5184247 339 93 53 73 41 5225248 340 91 53 72 40 5265249 341 90 51 70.5 38.5 5303.5250 342 89 48 68.5 36.5 5340
251 343 86 47 66.5 34.5 5374.5252 344 84 49 66.5 34.5 5409253 345 84 49 66.5 34.5 5443.5254 346 85 48 66.5 34.5 5478
255 347 86 45 65.5 33.5 5511.5256 348 88 47 67.5 35.5 5547257 349 88 55 71.5 39.5 5586.5258 350 88 52 70 38 5624.5
259 351 82 40 61 29 5653.5260 352 70 33 51.5 19.5 5673261 353 74 52 63 31 5704262 354 81 52 66.5 34.5 5738.5
263 355 76 52 64 32 5770.5264 356 77 41 59 27 5797.5265 357 80 41 60.5 28.5 5826266 358 77 45 61 29 5855267 359 76 40 58 26 5881268 360 77 42 59.5 27.5 5908.5269 361 81 46 63.5 31.5 5940270 362 77 56 66.5 34.5 5974.5271 363 66 50 58 26 6000.5272 364 65 49 57 25 6025.5 67 700 length of freeze (day) 72
273 365 79 46 62.5 30.5 6056 139 336.5 frost index (oF-day)363.5274 366 68 41 54.5 22.5 6078.5 average temperature 48.6
1948-1949 day of frost year degree cumulative
day of year (consecutive date) max. temp. min. temp avg. temp day (
oF) degree day (
oF)274 1 73 40 56.5 24.5 24.5275 2 73 39 56 24 48.5
276 3 74 41 57.5 25.5 74277 4 67 46 56.5 24.5 98.5278 5 65 39 52 20 118.5279 6 53 36 44.5 12.5 131280 7 66 30 48 16 147281 8 69 36 52.5 20.5 167.5282 9 73 34 53.5 21.5 189283 10 75 39 57 25 214284 11 73 36 54.5 22.5 236.5285 12 74 38 56 24 260.5286 13 75 42 58.5 26.5 287287 14 75 46 60.5 28.5 315.5288 15 67 38 52.5 20.5 336
289 16 68 40 54 22 358290 17 63 28 45.5 13.5 371.5291 18 65 32 48.5 16.5 388292 19 56 40 48 16 404
293 20 65 35 50 18 422294 21 66 37 51.5 19.5 441.5295 22 68 34 51 19 460.5296 23 67 36 51.5 19.5 480
297 24 67 30 48.5 16.5 496.5298 25 67 28 47.5 15.5 512299 26 63 32 47.5 15.5 527.5300 27 56 34 45 13 540.5
301 28 43 32 37.5 5.5 546302 29 43 30 36.5 4.5 550.5303 30 43 38 40.5 8.5 559304 31 56 37 46.5 14.5 573.5305 32 59 31 45 13 586.5306 33 56 33 44.5 12.5 599
0
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day of frost year
Blanding, UT
1947-1948
307 34 58 35 46.5 14.5 613.5
308 35 45 28 36.5 4.5 618309 36 46 21 33.5 1.5 619.5310 37 47 19 33 1 620.5311 38 52 22 37 5 625.5
312 39 42 19 30.5 -1.5 624313 40 41 12 26.5 -5.5 618.5314 41 41 18 29.5 -2.5 616315 42 44 22 33 1 617
316 43 47 19 33 1 618317 44 51 20 35.5 3.5 621.5318 45 55 22 38.5 6.5 628319 46 50 22 36 4 632320 47 50 25 37.5 5.5 637.5321 48 52 25 38.5 6.5 644322 49 34 14 24 -8 636323 50 37 10 23.5 -8.5 627.5324 51 36 23 29.5 -2.5 625325 52 39 17 28 -4 621326 53 44 16 30 -2 619327 54 47 23 35 3 622328 55 44 22 33 1 623
329 56 42 18 30 -2 621330 57 44 18 31 -1 620331 58 30 11 20.5 -11.5 608.5332 59 37 9 23 -9 599.5
333 60 44 12 28 -4 595.5334 61 45 13 29 -3 592.5335 62 44 20 32 0 592.5336 63 43 14 28.5 -3.5 589
337 64 50 20 35 3 592338 65 34 14 24 -8 584339 66 30 4 17 -15 569340 67 36 13 24.5 -7.5 561.5
341 68 29 8 18.5 -13.5 548342 69 41 15 28 -4 544343 70 40 15 27.5 -4.5 539.5344 71 44 20 32 0 539.5345 72 49 18 33.5 1.5 541346 73 45 22 33.5 1.5 542.5347 74 51 25 38 6 548.5348 75 48 29 38.5 6.5 555349 76 41 20 30.5 -1.5 553.5350 77 38 22 30 -2 551.5351 78 42 20 31 -1 550.5352 79 41 15 28 -4 546.5353 80 42 13 27.5 -4.5 542
354 81 44 18 31 -1 541355 82 44 16 30 -2 539356 83 42 25 33.5 1.5 540.5357 84 37 15 26 -6 534.5
358 85 31 4 17.5 -14.5 520359 86 36 8 22 -10 510360 87 37 27 32 0 510361 88 35 25 30 -2 508
362 89 34 18 26 -6 502363 90 36 10 23 -9 493364 91 43 15 29 -3 490365 92 - - - - 490
1 93 31 27 29 -3 4872 94 30 12 21 -11 4763 95 20 -2 9 -23 4534 96 20 -8 6 -26 4275 97 22 -9 6.5 -25.5 401.56 98 24 -5 9.5 -22.5 3797 99 25 -8 8.5 -23.5 355.58 100 33 -2 15.5 -16.5 3399 101 33 10 21.5 -10.5 328.510 102 35 30 32.5 0.5 32911 103 40 31 35.5 3.5 332.512 104 45 26 35.5 3.5 33613 105 43 36 39.5 7.5 343.5
14 106 38 16 27 -5 338.515 107 35 14 24.5 -7.5 33116 108 32 12 22 -10 32117 109 29 1 15 -17 304
18 110 31 5 18 -14 29019 111 30 0 15 -17 27320 112 32 12 22 -10 26321 113 32 8 20 -12 251
22 114 36 20 28 -4 24723 115 36 20 28 -4 24324 116 33 20 26.5 -5.5 237.525 117 47 20 33.5 1.5 239
26 118 32 21 26.5 -5.5 233.527 119 29 15 22 -10 223.528 120 29 2 15.5 -16.5 20729 121 24 -8 8 -24 18330 122 22 -5 8.5 -23.5 159.531 123 22 -3 9.5 -22.5 13732 124 29 -4 12.5 -19.5 117.533 125 30 6 18 -14 103.534 126 24 -1 11.5 -20.5 8335 127 30 0 15 -17 6636 128 31 6 18.5 -13.5 52.537 129 25 -2 11.5 -20.5 3238 130 29 10 19.5 -12.5 19.5
39 131 31 -1 15 -17 2.540 132 26 -7 9.5 -22.5 -2041 133 36 0 18 -14 -3442 134 47 4 25.5 -6.5 -40.5
43 135 35 20 27.5 -4.5 -4544 136 31 5 18 -14 -5945 137 26 0 13 -19 -7846 138 28 -3 12.5 -19.5 -97.5
47 139 39 5 22 -10 -107.548 140 40 9 24.5 -7.5 -11549 141 44 10 27 -5 -12050 142 41 12 26.5 -5.5 -125.5
51 143 44 12 28 -4 -129.5
52 144 45 21 33 1 -128.553 145 52 23 37.5 5.5 -12354 146 49 25 37 5 -11855 147 52 27 39.5 7.5 -110.5
56 148 46 27 36.5 4.5 -10657 149 44 24 34 2 -10458 150 43 27 35 3 -10159 151 42 29 35.5 3.5 -97.5
60 152 50 25 37.5 5.5 -9261 153 46 24 35 3 -8962 154 50 26 38 6 -8363 155 55 29 42 10 -7364 156 51 30 40.5 8.5 -64.565 157 51 24 37.5 5.5 -5966 158 44 28 36 4 -5567 159 41 22 31.5 -0.5 -55.568 160 44 20 32 0 -55.569 161 52 30 41 9 -46.570 162 54 29 41.5 9.5 -3771 163 50 26 38 6 -3172 164 50 28 39 7 -24
73 165 55 25 40 8 -1674 166 59 30 44.5 12.5 -3.575 167 62 33 47.5 15.5 1276 168 59 30 44.5 12.5 24.5
77 169 60 31 45.5 13.5 3878 170 65 29 47 15 5379 171 48 34 41 9 6280 172 54 32 43 11 73
81 173 49 31 40 8 8182 174 44 27 35.5 3.5 84.583 175 45 28 36.5 4.5 8984 176 45 26 35.5 3.5 92.5
85 177 47 26 36.5 4.5 9786 178 53 24 38.5 6.5 103.587 179 56 35 45.5 13.5 11788 180 41 30 35.5 3.5 120.589 181 47 30 38.5 6.5 12790 182 46 30 38 6 13391 183 40 27 33.5 1.5 134.592 184 45 20 32.5 0.5 13593 185 48 30 39 7 14294 186 55 28 41.5 9.5 151.595 187 65 30 47.5 15.5 16796 188 67 40 53.5 21.5 188.597 189 65 36 50.5 18.5 207
98 190 52 40 46 14 22199 191 57 36 46.5 14.5 235.5100 192 53 37 45 13 248.5101 193 66 31 48.5 16.5 265
102 194 68 31 49.5 17.5 282.5103 195 63 38 50.5 18.5 301104 196 61 30 45.5 13.5 314.5105 197 61 32 46.5 14.5 329
106 198 69 35 52 20 349107 199 70 37 53.5 21.5 370.5108 200 56 37 46.5 14.5 385109 201 65 34 49.5 17.5 402.5
110 202 62 36 49 17 419.5111 203 69 35 52 20 439.5112 204 74 37 55.5 23.5 463113 205 77 47 62 30 493114 206 79 43 61 29 522115 207 77 45 61 29 551116 208 76 47 61.5 29.5 580.5117 209 68 46 57 25 605.5118 210 75 39 57 25 630.5119 211 75 41 58 26 656.5120 212 - - - - 656.5121 213 70 33 51.5 19.5 676122 214 75 40 57.5 25.5 701.5
123 215 74 36 55 23 724.5124 216 69 40 54.5 22.5 747125 217 54 35 44.5 12.5 759.5126 218 49 36 42.5 10.5 770
127 219 56 35 45.5 13.5 783.5128 220 65 33 49 17 800.5129 221 72 35 53.5 21.5 822130 222 72 40 56 24 846
131 223 68 39 53.5 21.5 867.5132 224 64 40 52 20 887.5133 225 71 38 54.5 22.5 910134 226 75 45 60 28 938
135 227 65 41 53 21 959136 228 53 40 46.5 14.5 973.5137 229 65 43 54 22 995.5138 230 65 40 52.5 20.5 1016139 231 68 36 52 20 1036140 232 59 38 48.5 16.5 1052.5141 233 67 38 52.5 20.5 1073142 234 72 44 58 26 1099143 235 77 42 59.5 27.5 1126.5144 236 80 43 61.5 29.5 1156145 237 82 49 65.5 33.5 1189.5146 238 85 49 67 35 1224.5147 239 73 51 62 30 1254.5
148 240 74 50 62 30 1284.5149 241 75 43 59 27 1311.5150 242 70 39 54.5 22.5 1334151 243 69 39 54 22 1356
152 244 66 43 54.5 22.5 1378.5153 245 70 35 52.5 20.5 1399154 246 71 53 62 30 1429155 247 66 43 54.5 22.5 1451.5
156 248 71 38 54.5 22.5 1474157 249 65 43 54 22 1496158 250 69 31 50 18 1514159 251 73 45 59 27 1541
160 252 78 47 62.5 30.5 1571.5
161 253 83 49 66 34 1605.5162 254 78 47 62.5 30.5 1636163 255 83 51 67 35 1671164 256 81 47 64 32 1703
165 257 81 51 66 34 1737166 258 87 47 67 35 1772167 259 89 54 71.5 39.5 1811.5168 260 81 58 69.5 37.5 1849
169 261 67 55 61 29 1878170 262 78 50 64 32 1910171 263 80 51 65.5 33.5 1943.5172 264 84 46 65 33 1976.5173 265 86 55 70.5 38.5 2015174 266 82 54 68 36 2051175 267 77 49 63 31 2082176 268 84 45 64.5 32.5 2114.5177 269 83 52 67.5 35.5 2150178 270 81 49 65 33 2183179 271 82 48 65 33 2216180 272 84 44 64 32 2248181 273 87 52 69.5 37.5 2285.5
182 274 90 55 72.5 40.5 2326183 275 87 58 72.5 40.5 2366.5184 276 85 60 72.5 40.5 2407185 277 83 55 69 37 2444
186 278 85 53 69 37 2481187 279 81 60 70.5 38.5 2519.5188 280 83 50 66.5 34.5 2554189 281 89 53 71 39 2593
190 282 88 57 72.5 40.5 2633.5191 283 76 55 65.5 33.5 2667192 284 84 54 69 37 2704193 285 86 52 69 37 2741
194 286 87 54 70.5 38.5 2779.5195 287 90 56 73 41 2820.5196 288 91 60 75.5 43.5 2864197 289 95 55 75 43 2907198 290 95 60 77.5 45.5 2952.5199 291 94 58 76 44 2996.5200 292 89 51 70 38 3034.5201 293 87 55 71 39 3073.5202 294 86 55 70.5 38.5 3112203 295 88 59 73.5 41.5 3153.5204 296 84 54 69 37 3190.5205 297 83 57 70 38 3228.5206 298 85 58 71.5 39.5 3268
207 299 89 50 69.5 37.5 3305.5208 300 88 51 69.5 37.5 3343209 301 89 51 70 38 3381210 302 92 55 73.5 41.5 3422.5
211 303 94 53 73.5 41.5 3464212 304 96 57 76.5 44.5 3508.5213 305 96 55 75.5 43.5 3552214 306 90 59 74.5 42.5 3594.5
215 307 85 59 72 40 3634.5216 308 91 52 71.5 39.5 3674217 309 93 58 75.5 43.5 3717.5218 310 94 59 76.5 44.5 3762
219 311 90 51 70.5 38.5 3800.5220 312 80 58 69 37 3837.5221 313 80 52 66 34 3871.5222 314 83 49 66 34 3905.5223 315 84 52 68 36 3941.5224 316 85 48 66.5 34.5 3976225 317 86 49 67.5 35.5 4011.5226 318 84 47 65.5 33.5 4045227 319 84 47 65.5 33.5 4078.5228 320 83 50 66.5 34.5 4113229 321 86 54 70 38 4151230 322 89 43 66 34 4185231 323 89 45 67 35 4220
232 324 93 46 69.5 37.5 4257.5233 325 91 50 70.5 38.5 4296234 326 91 54 72.5 40.5 4336.5235 327 79 50 64.5 32.5 4369
236 328 84 48 66 34 4403237 329 84 53 68.5 36.5 4439.5238 330 86 49 67.5 35.5 4475239 331 88 50 69 37 4512
240 332 89 56 72.5 40.5 4552.5241 333 91 52 71.5 39.5 4592242 334 93 55 74 42 4634243 335 93 52 72.5 40.5 4674.5
244 336 86 56 71 39 4713.5245 337 87 52 69.5 37.5 4751246 338 87 54 70.5 38.5 4789.5247 339 86 48 67 35 4824.5248 340 85 50 67.5 35.5 4860249 341 87 48 67.5 35.5 4895.5250 342 88 51 69.5 37.5 4933251 343 87 57 72 40 4973252 344 78 52 65 33 5006253 345 71 52 61.5 29.5 5035.5254 346 76 49 62.5 30.5 5066255 347 78 46 62 30 5096256 348 72 48 60 28 5124
257 349 75 41 58 26 5150258 350 80 43 61.5 29.5 5179.5259 351 81 41 61 29 5208.5260 352 85 47 66 34 5242.5
261 353 84 41 62.5 30.5 5273262 354 84 36 60 28 5301263 355 85 45 65 33 5334264 356 86 55 70.5 38.5 5372.5
265 357 94 46 70 38 5410.5266 358 83 46 64.5 32.5 5443267 359 82 44 63 31 5474268 360 82 45 63.5 31.5 5505.5 48 644 length of freeze (day) 96
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500
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700
0 50 100 150 200 250
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day of frost year
Blanding, UT
1948-1949
269 361 83 51 67 35 5540.5 144 -128.5 frost index (oF-day)772.5270 362 82 50 66 34 5574.5 average temperature 47.6
271 363 75 50 62.5 30.5 5605272 364 76 48 62 30 5635273 365 72 38 55 23 5658
1954-1955 day of frost year degree cumulative
day of year (consecutive date) max. temp. min. temp avg. temp day (
oF) degree day (
oF)274 1 81 42 61.5 29.5 29.5275 2 72 51 61.5 29.5 59276 3 64 52 58 26 85277 4 72 51 61.5 29.5 114.5278 5 74 46 60 28 142.5279 6 77 50 63.5 31.5 174
280 7 75 49 62 30 204281 8 74 51 62.5 30.5 234.5282 9 70 49 59.5 27.5 262283 10 70 43 56.5 24.5 286.5
284 11 68 40 54 22 308.5285 12 73 41 57 25 333.5286 13 71 40 55.5 23.5 357287 14 63 32 47.5 15.5 372.5
288 15 70 38 54 22 394.5289 16 68 34 51 19 413.5290 17 71 31 51 19 432.5291 18 74 36 55 23 455.5
292 19 80 35 57.5 25.5 481293 20 72 37 54.5 22.5 503.5294 21 76 42 59 27 530.5295 22 74 41 57.5 25.5 556296 23 71 39 55 23 579297 24 58 28 43 11 590298 25 48 28 38 6 596299 26 47 27 37 5 601300 27 55 22 38.5 6.5 607.5301 28 57 23 40 8 615.5302 29 62 27 44.5 12.5 628303 30 63 26 44.5 12.5 640.5304 31 62 28 45 13 653.5
305 32 62 30 46 14 667.5306 33 54 30 42 10 677.5307 34 59 25 42 10 687.5308 35 60 29 44.5 12.5 700
309 36 60 25 42.5 10.5 710.5310 37 60 24 42 10 720.5311 38 60 23 41.5 9.5 730312 39 58 24 41 9 739
313 40 60 25 42.5 10.5 749.5314 41 62 26 44 12 761.5315 42 61 32 46.5 14.5 776316 43 52 37 44.5 12.5 788.5
317 44 53 32 42.5 10.5 799318 45 53 31 42 10 809319 46 55 29 42 10 819320 47 53 32 42.5 10.5 829.5321 48 49 27 38 6 835.5322 49 55 25 40 8 843.5323 50 58 28 43 11 854.5324 51 59 27 43 11 865.5325 52 60 30 45 13 878.5326 53 65 35 50 18 896.5327 54 61 30 45.5 13.5 910328 55 63 30 46.5 14.5 924.5329 56 63 33 48 16 940.5
330 57 58 33 45.5 13.5 954331 58 58 25 41.5 9.5 963.5332 59 40 24 32 0 963.5333 60 40 25 32.5 0.5 964
334 61 38 21 29.5 -2.5 961.5335 62 47 30 38.5 6.5 968336 63 50 29 39.5 7.5 975.5337 64 49 28 38.5 6.5 982
338 65 48 32 40 8 990339 66 46 24 35 3 993340 67 50 27 38.5 6.5 999.5341 68 50 24 37 5 1004.5
342 69 41 17 29 -3 1001.5343 70 37 12 24.5 -7.5 994344 71 35 26 30.5 -1.5 992.5345 72 39 17 28 -4 988.5346 73 34 14 24 -8 980.5347 74 31 13 22 -10 970.5348 75 38 11 24.5 -7.5 963349 76 33 13 23 -9 954350 77 36 10 23 -9 945351 78 44 6 25 -7 938352 79 48 14 31 -1 937353 80 40 15 27.5 -4.5 932.5354 81 43 13 28 -4 928.5
355 82 37 12 24.5 -7.5 921356 83 35 14 24.5 -7.5 913.5357 84 40 14 27 -5 908.5358 85 42 16 29 -3 905.5
359 86 41 17 29 -3 902.5360 87 35 16 25.5 -6.5 896361 88 27 15 21 -11 885362 89 30 5 17.5 -14.5 870.5
363 90 26 2 14 -18 852.5364 91 30 3 16.5 -15.5 837365 92 29 7 18 -14 8231 93 33 14 23.5 -8.5 814.5
2 94 39 29 34 2 816.53 95 42 31 36.5 4.5 8214 96 37 18 27.5 -4.5 816.55 97 34 15 24.5 -7.5 8096 98 37 18 27.5 -4.5 804.57 99 36 21 28.5 -3.5 801
8 100 41 19 30 -2 799
9 101 32 18 25 -7 79210 102 29 23 26 -6 78611 103 33 15 24 -8 77812 104 38 11 24.5 -7.5 770.5
13 105 33 12 22.5 -9.5 76114 106 42 15 28.5 -3.5 757.515 107 39 13 26 -6 751.516 108 32 25 28.5 -3.5 748
17 109 38 5 21.5 -10.5 737.518 110 25 -1 12 -20 717.519 111 28 8 18 -14 703.520 112 33 3 18 -14 689.521 113 28 3 15.5 -16.5 67322 114 30 0 15 -17 65623 115 32 0 16 -16 64024 116 42 12 27 -5 63525 117 39 12 25.5 -6.5 628.526 118 44 14 29 -3 625.527 119 40 10 25 -7 618.528 120 49 14 31.5 -0.5 61829 121 41 12 26.5 -5.5 612.5
30 122 45 21 33 1 613.531 123 37 20 28.5 -3.5 61032 124 35 11 23 -9 60133 125 35 20 27.5 -4.5 596.5
34 126 26 7 16.5 -15.5 58135 127 34 0 17 -15 56636 128 31 1 16 -16 55037 129 31 7 19 -13 537
38 130 37 3 20 -12 52539 131 41 12 26.5 -5.5 519.540 132 46 14 30 -2 517.541 133 30 6 18 -14 503.5
42 134 33 4 18.5 -13.5 49043 135 40 10 25 -7 48344 136 46 16 31 -1 48245 137 48 18 33 1 48346 138 50 29 39.5 7.5 490.547 139 50 26 38 6 496.548 140 39 31 35 3 499.549 141 37 12 24.5 -7.5 49250 142 21 -1 10 -22 47051 143 22 -1 10.5 -21.5 448.552 144 30 0 15 -17 431.553 145 22 2 12 -20 411.554 146 31 8 19.5 -12.5 399
55 147 33 5 19 -13 38656 148 32 21 26.5 -5.5 380.557 149 39 27 33 1 381.558 150 41 22 31.5 -0.5 381
59 151 43 19 31 -1 38060 152 45 14 29.5 -2.5 377.561 153 49 23 36 4 381.562 154 48 21 34.5 2.5 384
63 155 49 23 36 4 38864 156 49 25 37 5 39365 157 45 17 31 -1 39266 158 49 23 36 4 396
67 159 55 24 39.5 7.5 403.568 160 57 30 43.5 11.5 41569 161 55 34 44.5 12.5 427.570 162 54 32 43 11 438.571 163 55 29 42 10 448.572 164 58 30 44 12 460.573 165 60 31 45.5 13.5 47474 166 52 28 40 8 48275 167 53 32 42.5 10.5 492.576 168 43 24 33.5 1.5 49477 169 48 21 34.5 2.5 496.578 170 50 22 36 4 500.579 171 42 20 31 -1 499.5
80 172 32 13 22.5 -9.5 49081 173 48 15 31.5 -0.5 489.582 174 55 24 39.5 7.5 49783 175 59 26 42.5 10.5 507.5
84 176 52 35 43.5 11.5 51985 177 42 23 32.5 0.5 519.586 178 46 19 32.5 0.5 52087 179 48 14 31 -1 519
88 180 61 26 43.5 11.5 530.589 181 59 30 44.5 12.5 54390 182 48 28 38 6 54991 183 57 23 40 8 557
92 184 59 27 43 11 56893 185 39 17 28 -4 56494 186 44 13 28.5 -3.5 560.595 187 50 28 39 7 567.596 188 48 28 38 6 573.597 189 48 20 34 2 575.598 190 53 27 40 8 583.599 191 62 28 45 13 596.5100 192 65 28 46.5 14.5 611101 193 45 31 38 6 617102 194 51 28 39.5 7.5 624.5103 195 64 25 44.5 12.5 637104 196 67 34 50.5 18.5 655.5
105 197 70 34 52 20 675.5106 198 69 34 51.5 19.5 695107 199 58 38 48 16 711108 200 66 34 50 18 729
109 201 49 25 37 5 734110 202 59 25 42 10 744111 203 66 31 48.5 16.5 760.5112 204 55 36 45.5 13.5 774
113 205 59 33 46 14 788114 206 67 34 50.5 18.5 806.5115 207 70 36 53 21 827.5116 208 69 37 53 21 848.5
117 209 53 31 42 10 858.5
118 210 63 30 46.5 14.5 873119 211 71 38 54.5 22.5 895.5120 212 70 47 58.5 26.5 922121 213 71 46 58.5 26.5 948.5
122 214 47 33 40 8 956.5123 215 59 28 43.5 11.5 968124 216 68 35 51.5 19.5 987.5125 217 76 49 62.5 30.5 1018
126 218 76 42 59 27 1045127 219 75 45 60 28 1073128 220 63 46 54.5 22.5 1095.5129 221 65 35 50 18 1113.5130 222 61 40 50.5 18.5 1132131 223 72 36 54 22 1154132 224 78 41 59.5 27.5 1181.5133 225 78 44 61 29 1210.5134 226 75 45 60 28 1238.5135 227 58 36 47 15 1253.5136 228 62 28 45 13 1266.5137 229 59 39 49 17 1283.5138 230 67 44 55.5 23.5 1307
139 231 74 47 60.5 28.5 1335.5140 232 77 47 62 30 1365.5141 233 82 46 64 32 1397.5142 234 70 42 56 24 1421.5
143 235 73 38 55.5 23.5 1445144 236 75 43 59 27 1472145 237 70 42 56 24 1496146 238 76 40 58 26 1522
147 239 69 39 54 22 1544148 240 70 33 51.5 19.5 1563.5149 241 77 43 60 28 1591.5150 242 82 49 65.5 33.5 1625
151 243 75 45 60 28 1653152 244 63 42 52.5 20.5 1673.5153 245 67 32 49.5 17.5 1691154 246 72 43 57.5 25.5 1716.5155 247 68 42 55 23 1739.5156 248 78 40 59 27 1766.5157 249 84 57 70.5 38.5 1805158 250 91 50 70.5 38.5 1843.5159 251 90 58 74 42 1885.5160 252 78 50 64 32 1917.5161 253 79 49 64 32 1949.5162 254 85 50 67.5 35.5 1985163 255 81 48 64.5 32.5 2017.5
164 256 65 49 57 25 2042.5165 257 67 48 57.5 25.5 2068166 258 79 42 60.5 28.5 2096.5167 259 77 46 61.5 29.5 2126
168 260 78 42 60 28 2154169 261 82 47 64.5 32.5 2186.5170 262 89 53 71 39 2225.5171 263 90 54 72 40 2265.5
172 264 93 53 73 41 2306.5173 265 95 52 73.5 41.5 2348174 266 93 57 75 43 2391175 267 87 50 68.5 36.5 2427.5
176 268 85 52 68.5 36.5 2464177 269 84 49 66.5 34.5 2498.5178 270 85 50 67.5 35.5 2534179 271 85 49 67 35 2569180 272 82 48 65 33 2602181 273 84 45 64.5 32.5 2634.5182 274 85 48 66.5 34.5 2669183 275 86 48 67 35 2704184 276 91 50 70.5 38.5 2742.5185 277 90 51 70.5 38.5 2781186 278 89 54 71.5 39.5 2820.5187 279 91 53 72 40 2860.5188 280 88 49 68.5 36.5 2897
189 281 90 47 68.5 36.5 2933.5190 282 93 51 72 40 2973.5191 283 94 52 73 41 3014.5192 284 85 57 71 39 3053.5
193 285 93 55 74 42 3095.5194 286 95 55 75 43 3138.5195 287 98 59 78.5 46.5 3185196 288 92 55 73.5 41.5 3226.5
197 289 95 60 77.5 45.5 3272198 290 89 59 74 42 3314199 291 90 55 72.5 40.5 3354.5200 292 88 57 72.5 40.5 3395
201 293 83 61 72 40 3435202 294 91 56 73.5 41.5 3476.5203 295 96 57 76.5 44.5 3521204 296 90 60 75 43 3564205 297 87 61 74 42 3606206 298 74 59 66.5 34.5 3640.5207 299 82 55 68.5 36.5 3677208 300 86 55 70.5 38.5 3715.5209 301 88 55 71.5 39.5 3755210 302 92 57 74.5 42.5 3797.5211 303 91 57 74 42 3839.5212 304 92 62 77 45 3884.5213 305 92 63 77.5 45.5 3930
214 306 92 63 77.5 45.5 3975.5215 307 90 64 77 45 4020.5216 308 88 61 74.5 42.5 4063217 309 89 62 75.5 43.5 4106.5
218 310 89 60 74.5 42.5 4149219 311 86 51 68.5 36.5 4185.5220 312 86 57 71.5 39.5 4225221 313 93 58 75.5 43.5 4268.5
222 314 90 61 75.5 43.5 4312223 315 90 55 72.5 40.5 4352.5224 316 89 58 73.5 41.5 4394225 317 78 60 69 37 4431
226 318 82 60 71 39 4470
227 319 89 56 72.5 40.5 4510.5228 320 87 61 74 42 4552.5229 321 83 59 71 39 4591.5230 322 85 57 71 39 4630.5
231 323 85 58 71.5 39.5 4670232 324 91 56 73.5 41.5 4711.5233 325 89 57 73 41 4752.5234 326 88 56 72 40 4792.5
235 327 91 59 75 43 4835.5236 328 84 59 71.5 39.5 4875237 329 84 58 71 39 4914238 330 85 55 70 38 4952239 331 89 58 73.5 41.5 4993.5240 332 89 53 71 39 5032.5241 333 88 53 70.5 38.5 5071242 334 88 60 74 42 5113243 335 86 53 69.5 37.5 5150.5244 336 91 52 71.5 39.5 5190245 337 93 52 72.5 40.5 5230.5246 338 92 60 76 44 5274.5247 339 91 52 71.5 39.5 5314
248 340 90 58 74 42 5356249 341 93 56 74.5 42.5 5398.5250 342 88 56 72 40 5438.5251 343 88 52 70 38 5476.5
252 344 88 51 69.5 37.5 5514253 345 90 55 72.5 40.5 5554.5254 346 87 48 67.5 35.5 5590255 347 86 50 68 36 5626
256 348 88 53 70.5 38.5 5664.5257 349 86 50 68 36 5700.5258 350 - - - - 5700.5259 351 82 49 65.5 33.5 5734
260 352 79 52 65.5 33.5 5767.5261 353 78 47 62.5 30.5 5798262 354 76 50 63 31 5829263 355 71 36 53.5 21.5 5850.5264 356 76 39 57.5 25.5 5876265 357 77 38 57.5 25.5 5901.5266 358 76 41 58.5 26.5 5928267 359 73 42 57.5 25.5 5953.5268 360 70 38 54 22 5975.5 69 1001.5 length of freeze (day) 83269 361 72 45 58.5 26.5 6002 152 377 frost index (oF-day)624.5270 362 74 44 59 27 6029 average temperature 48.8271 363 76 40 58 26 6055272 364 76 39 57.5 25.5 6080.5273 365 78 38 58 26 6106.5
1955-1956 day of frost year degree cumulative
day of year (consecutive date) max. temp. min. temp avg. temp day (
oF) degree day (
oF)
274 1 79 40 59.5 27.5 27.5275 2 79 48 63.5 31.5 59276 3 78 42 60 28 87277 4 74 46 60 28 115278 5 73 45 59 27 142279 6 61 32 46.5 14.5 156.5280 7 67 28 47.5 15.5 172281 8 72 30 51 19 191282 9 75 38 56.5 24.5 215.5283 10 76 41 58.5 26.5 242284 11 76 42 59 27 269285 12 76 40 58 26 295286 13 79 48 63.5 31.5 326.5
287 14 75 39 57 25 351.5288 15 77 40 58.5 26.5 378289 16 77 45 61 29 407290 17 77 39 58 26 433
291 18 76 38 57 25 458292 19 75 41 58 26 484293 20 73 44 58.5 26.5 510.5294 21 70 42 56 24 534.5
295 22 67 41 54 22 556.5296 23 62 38 50 18 574.5297 24 64 34 49 17 591.5298 25 67 29 48 16 607.5
299 26 65 37 51 19 626.5300 27 51 28 39.5 7.5 634301 28 57 23 40 8 642302 29 54 32 43 11 653303 30 60 28 44 12 665304 31 65 32 48.5 16.5 681.5305 32 62 28 45 13 694.5306 33 50 16 33 1 695.5307 34 56 21 38.5 6.5 702308 35 59 24 41.5 9.5 711.5309 36 64 27 45.5 13.5 725310 37 59 32 45.5 13.5 738.5311 38 48 31 39.5 7.5 746
312 39 55 23 39 7 753313 40 60 29 44.5 12.5 765.5314 41 62 28 45 13 778.5315 42 61 30 45.5 13.5 792
316 43 56 32 44 12 804317 44 50 37 43.5 11.5 815.5318 45 45 31 38 6 821.5319 46 33 11 22 -10 811.5
320 47 29 6 17.5 -14.5 797321 48 35 24 29.5 -2.5 794.5322 49 39 21 30 -2 792.5323 50 47 17 32 0 792.5
324 51 55 24 39.5 7.5 800325 52 49 33 41 9 809326 53 39 22 30.5 -1.5 807.5327 54 40 19 29.5 -2.5 805328 55 46 25 35.5 3.5 808.5329 56 45 20 32.5 0.5 809
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0 50 100 150 200
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day of frost year
Blanding, UT
1954-1955
330 57 47 21 34 2 811
331 58 52 29 40.5 8.5 819.5332 59 54 28 41 9 828.5333 60 48 27 37.5 5.5 834334 61 38 28 33 1 835
335 62 41 30 35.5 3.5 838.5336 63 34 19 26.5 -5.5 833337 64 32 12 22 -10 823338 65 35 14 24.5 -7.5 815.5
339 66 31 10 20.5 -11.5 804340 67 30 18 24 -8 796341 68 38 15 26.5 -5.5 790.5342 69 40 9 24.5 -7.5 783343 70 35 18 26.5 -5.5 777.5344 71 42 14 28 -4 773.5345 72 38 13 25.5 -6.5 767346 73 39 16 27.5 -4.5 762.5347 74 43 18 30.5 -1.5 761348 75 45 24 34.5 2.5 763.5349 76 48 26 37 5 768.5350 77 40 26 33 1 769.5351 78 43 21 32 0 769.5
352 79 45 25 35 3 772.5353 80 47 32 39.5 7.5 780354 81 51 30 40.5 8.5 788.5355 82 49 27 38 6 794.5
356 83 48 28 38 6 800.5357 84 46 33 39.5 7.5 808358 85 52 33 42.5 10.5 818.5359 86 51 32 41.5 9.5 828
360 87 53 32 42.5 10.5 838.5361 88 45 33 39 7 845.5362 89 48 30 39 7 852.5363 90 48 31 39.5 7.5 860
364 91 51 36 43.5 11.5 871.5365 92 49 25 37 5 876.51 93 42 22 32 0 876.52 94 45 20 32.5 0.5 8773 95 45 22 33.5 1.5 878.54 96 52 22 37 5 883.55 97 48 24 36 4 887.56 98 54 31 42.5 10.5 8987 99 52 30 41 9 9078 100 55 28 41.5 9.5 916.59 101 56 29 42.5 10.5 92710 102 57 26 41.5 9.5 936.511 103 57 27 42 10 946.5
12 104 55 26 40.5 8.5 95513 105 55 29 42 10 96514 106 51 28 39.5 7.5 972.515 107 60 28 44 12 984.5
16 108 45 33 39 7 991.517 109 44 24 34 2 993.518 110 43 21 32 0 993.519 111 45 22 33.5 1.5 995
20 112 38 25 31.5 -0.5 994.521 113 37 21 29 -3 991.522 114 35 21 28 -4 987.523 115 36 30 33 1 988.5
24 116 38 12 25 -7 981.525 117 33 14 23.5 -8.5 97326 118 42 29 35.5 3.5 976.527 119 44 30 37 5 981.528 120 38 27 32.5 0.5 98229 121 34 17 25.5 -6.5 975.530 122 33 15 24 -8 967.531 123 30 25 27.5 -4.5 96332 124 25 10 17.5 -14.5 948.533 125 34 7 20.5 -11.5 93734 126 36 6 21 -11 92635 127 41 14 27.5 -4.5 921.536 128 37 15 26 -6 915.5
37 129 41 23 32 0 915.538 130 32 20 26 -6 909.539 131 34 17 25.5 -6.5 90340 132 40 15 27.5 -4.5 898.5
41 133 42 17 29.5 -2.5 89642 134 44 21 32.5 0.5 896.543 135 42 26 34 2 898.544 136 48 24 36 4 902.5
45 137 48 25 36.5 4.5 90746 138 45 23 34 2 90947 139 36 20 28 -4 90548 140 33 16 24.5 -7.5 897.5
49 141 35 24 29.5 -2.5 89550 142 35 19 27 -5 89051 143 43 20 31.5 -0.5 889.552 144 50 24 37 5 894.553 145 55 30 42.5 10.5 90554 146 48 39 43.5 11.5 916.555 147 42 19 30.5 -1.5 91556 148 42 16 29 -3 91257 149 42 18 30 -2 91058 150 39 10 24.5 -7.5 902.559 151 47 19 33 1 903.560 152 51 22 36.5 4.5 90861 153 52 23 37.5 5.5 913.5
62 154 52 25 38.5 6.5 92063 155 56 26 41 9 92964 156 59 28 43.5 11.5 940.565 157 62 27 44.5 12.5 953
66 158 42 22 32 0 95367 159 40 14 27 -5 94868 160 49 17 33 1 94969 161 56 20 38 6 955
70 162 60 25 42.5 10.5 965.571 163 45 24 34.5 2.5 96872 164 41 20 30.5 -1.5 966.573 165 40 20 30 -2 964.5
74 166 34 24 29 -3 961.5
75 167 41 19 30 -2 959.576 168 54 18 36 4 963.577 169 55 23 39 7 970.578 170 65 28 46.5 14.5 985
79 171 65 33 49 17 100280 172 57 30 43.5 11.5 1013.581 173 61 31 46 14 1027.582 174 65 33 49 17 1044.5
83 175 70 35 52.5 20.5 106584 176 71 35 53 21 108685 177 69 38 53.5 21.5 1107.586 178 70 35 52.5 20.5 112887 179 54 20 37 5 113388 180 51 15 33 1 113489 181 60 21 40.5 8.5 1142.590 182 66 30 48 16 1158.591 183 65 30 47.5 15.5 117492 184 51 32 41.5 9.5 1183.593 185 42 27 34.5 2.5 118694 186 48 22 35 3 118995 187 56 21 38.5 6.5 1195.5
96 188 62 24 43 11 1206.597 189 57 24 40.5 8.5 121598 190 66 27 46.5 14.5 1229.599 191 52 36 44 12 1241.5
100 192 63 29 46 14 1255.5101 193 68 32 50 18 1273.5102 194 62 36 49 17 1290.5103 195 66 38 52 20 1310.5
104 196 62 34 48 16 1326.5105 197 53 36 44.5 12.5 1339106 198 64 34 49 17 1356107 199 66 32 49 17 1373
108 200 54 40 47 15 1388109 201 57 35 46 14 1402110 202 60 34 47 15 1417111 203 63 35 49 17 1434112 204 68 34 51 19 1453113 205 74 40 57 25 1478114 206 74 40 57 25 1503115 207 68 43 55.5 23.5 1526.5116 208 72 38 55 23 1549.5117 209 68 40 54 22 1571.5118 210 59 41 50 18 1589.5119 211 62 32 47 15 1604.5120 212 67 33 50 18 1622.5
121 213 70 42 56 24 1646.5122 214 69 40 54.5 22.5 1669123 215 75 40 57.5 25.5 1694.5124 216 79 44 61.5 29.5 1724
125 217 80 47 63.5 31.5 1755.5126 218 76 41 58.5 26.5 1782127 219 72 40 56 24 1806128 220 76 42 59 27 1833
129 221 74 39 56.5 24.5 1857.5130 222 70 49 59.5 27.5 1885131 223 63 38 50.5 18.5 1903.5132 224 72 35 53.5 21.5 1925
133 225 69 43 56 24 1949134 226 61 33 47 15 1964135 227 56 37 46.5 14.5 1978.5136 228 73 35 54 22 2000.5137 229 78 46 62 30 2030.5138 230 81 43 62 30 2060.5139 231 83 44 63.5 31.5 2092140 232 83 52 67.5 35.5 2127.5141 233 80 48 64 32 2159.5142 234 76 50 63 31 2190.5143 235 75 48 61.5 29.5 2220144 236 77 46 61.5 29.5 2249.5145 237 79 50 64.5 32.5 2282
146 238 83 51 67 35 2317147 239 76 43 59.5 27.5 2344.5148 240 77 40 58.5 26.5 2371149 241 75 47 61 29 2400
150 242 78 45 61.5 29.5 2429.5151 243 85 48 66.5 34.5 2464152 244 90 49 69.5 37.5 2501.5153 245 86 59 72.5 40.5 2542
154 246 88 52 70 38 2580155 247 90 53 71.5 39.5 2619.5156 248 83 58 70.5 38.5 2658157 249 75 45 60 28 2686
158 250 80 43 61.5 29.5 2715.5159 251 86 49 67.5 35.5 2751160 252 88 54 71 39 2790161 253 90 57 73.5 41.5 2831.5162 254 92 55 73.5 41.5 2873163 255 90 53 71.5 39.5 2912.5164 256 93 50 71.5 39.5 2952165 257 93 53 73 41 2993166 258 90 50 70 38 3031167 259 77 52 64.5 32.5 3063.5168 260 79 47 63 31 3094.5169 261 85 49 67 35 3129.5170 262 88 52 70 38 3167.5
171 263 88 56 72 40 3207.5172 264 87 51 69 37 3244.5173 265 85 50 67.5 35.5 3280174 266 90 52 71 39 3319
175 267 90 52 71 39 3358176 268 89 53 71 39 3397177 269 89 54 71.5 39.5 3436.5178 270 93 54 73.5 41.5 3478
179 271 97 56 76.5 44.5 3522.5180 272 94 55 74.5 42.5 3565181 273 93 58 75.5 43.5 3608.5182 274 80 60 70 38 3646.5
183 275 79 55 67 35 3681.5
184 276 81 52 66.5 34.5 3716185 277 83 48 65.5 33.5 3749.5186 278 85 47 66 34 3783.5187 279 89 49 69 37 3820.5
188 280 90 51 70.5 38.5 3859189 281 93 51 72 40 3899190 282 95 55 75 43 3942191 283 97 58 77.5 45.5 3987.5
192 284 93 59 76 44 4031.5193 285 90 60 75 43 4074.5194 286 84 55 69.5 37.5 4112195 287 88 57 72.5 40.5 4152.5196 288 86 57 71.5 39.5 4192197 289 91 53 72 40 4232198 290 95 59 77 45 4277199 291 93 58 75.5 43.5 4320.5200 292 90 58 74 42 4362.5201 293 91 58 74.5 42.5 4405202 294 88 57 72.5 40.5 4445.5203 295 93 55 74 42 4487.5204 296 88 59 73.5 41.5 4529
205 297 91 56 73.5 41.5 4570.5206 298 89 56 72.5 40.5 4611207 299 92 60 76 44 4655208 300 91 58 74.5 42.5 4697.5
209 301 89 57 73 41 4738.5210 302 89 60 74.5 42.5 4781211 303 86 56 71 39 4820212 304 86 54 70 38 4858
213 305 80 56 68 36 4894214 306 79 54 66.5 34.5 4928.5215 307 83 53 68 36 4964.5216 308 82 49 65.5 33.5 4998
217 309 83 49 66 34 5032218 310 88 49 68.5 36.5 5068.5219 311 90 51 70.5 38.5 5107220 312 89 51 70 38 5145221 313 90 51 70.5 38.5 5183.5222 314 90 48 69 37 5220.5223 315 93 52 72.5 40.5 5261224 316 87 52 69.5 37.5 5298.5225 317 85 50 67.5 35.5 5334226 318 89 56 72.5 40.5 5374.5227 319 89 60 74.5 42.5 5417228 320 82 54 68 36 5453229 321 66 53 59.5 27.5 5480.5
230 322 82 50 66 34 5514.5231 323 83 51 67 35 5549.5232 324 81 46 63.5 31.5 5581233 325 85 53 69 37 5618
234 326 87 50 68.5 36.5 5654.5235 327 88 52 70 38 5692.5236 328 92 50 71 39 5731.5237 329 90 53 71.5 39.5 5771
238 330 88 54 71 39 5810239 331 84 53 68.5 36.5 5846.5240 332 82 44 63 31 5877.5241 333 82 51 66.5 34.5 5912
242 334 82 44 63 31 5943243 335 93 50 71.5 39.5 5982.5244 336 - 53 - - 5982.5245 337 86 42 64 32 6014.5246 338 89 46 67.5 35.5 6050247 339 90 50 70 38 6088248 340 87 48 67.5 35.5 6123.5249 341 89 50 69.5 37.5 6161250 342 86 51 68.5 36.5 6197.5251 343 84 50 67 35 6232.5252 344 82 50 66 34 6266.5253 345 85 48 66.5 34.5 6301254 346 87 49 68 36 6337
255 347 88 50 69 37 6374256 348 85 50 67.5 35.5 6409.5257 349 86 50 68 36 6445.5258 350 90 50 70 38 6483.5
259 351 90 50 70 38 6521.5260 352 89 48 68.5 36.5 6558261 353 91 51 71 39 6597262 354 88 46 67 35 6632
263 355 89 47 68 36 6668264 356 86 50 68 36 6704265 357 76 45 60.5 28.5 6732.5266 358 77 40 58.5 26.5 6759
267 359 80 42 61 29 6788268 360 82 41 61.5 29.5 6817.5269 361 84 42 63 31 6848.5270 362 85 43 64 32 6880.5271 363 82 43 62.5 30.5 6911272 364 81 47 64 32 6943 112 994.5 length of freeze (day) 31
273 365 80 41 60.5 28.5 6971.5 143 889.5 frost index (oF-day)105274 366 80 45 62.5 30.5 7002 average temperature 51.2
1956-1957 day of frost year degree cumulative
day of year (consecutive date) max. temp. min. temp avg. temp day (
oF) degree day (
oF)274 1 75 40 57.5 25.5 25.5275 2 76 39 57.5 25.5 51
276 3 76 46 61 29 80277 4 78 44 61 29 109278 5 79 47 63 31 140279 6 82 51 66.5 34.5 174.5
280 7 83 50 66.5 34.5 209281 8 74 42 58 26 235282 9 74 38 56 24 259283 10 73 36 54.5 22.5 281.5284 11 77 40 58.5 26.5 308285 12 71 43 57 25 333
0
200
400
600
800
1000
1200
1400
1600
0 50 100 150 200 250
fr
e
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day of frost year
Blanding, UT
1955-1956
286 13 64 35 49.5 17.5 350.5
287 14 68 31 49.5 17.5 368288 15 72 35 53.5 21.5 389.5289 16 73 34 53.5 21.5 411290 17 70 42 56 24 435
291 18 69 36 52.5 20.5 455.5292 19 65 35 50 18 473.5293 20 68 31 49.5 17.5 491294 21 68 32 50 18 509
295 22 71 35 53 21 530296 23 69 41 55 23 553297 24 55 26 40.5 8.5 561.5298 25 51 19 35 3 564.5299 26 66 32 49 17 581.5300 27 59 24 41.5 9.5 591301 28 62 30 46 14 605302 29 43 26 34.5 2.5 607.5303 30 45 22 33.5 1.5 609304 31 47 28 37.5 5.5 614.5305 32 35 25 30 -2 612.5306 33 36 20 28 -4 608.5307 34 35 22 28.5 -3.5 605
308 35 38 18 28 -4 601309 36 49 20 34.5 2.5 603.5310 37 56 30 43 11 614.5311 38 57 29 43 11 625.5
312 39 58 28 43 11 636.5313 40 63 28 45.5 13.5 650314 41 61 28 44.5 12.5 662.5315 42 59 26 42.5 10.5 673
316 43 59 31 45 13 686317 44 56 24 40 8 694318 45 39 17 28 -4 690319 46 38 15 26.5 -5.5 684.5
320 47 43 12 27.5 -4.5 680321 48 46 18 32 0 680322 49 45 24 34.5 2.5 682.5323 50 29 12 20.5 -11.5 671324 51 31 5 18 -14 657325 52 42 9 25.5 -6.5 650.5326 53 44 15 29.5 -2.5 648327 54 52 20 36 4 652328 55 51 22 36.5 4.5 656.5329 56 48 22 35 3 659.5330 57 50 20 35 3 662.5331 58 49 18 33.5 1.5 664332 59 48 23 35.5 3.5 667.5
333 60 55 28 41.5 9.5 677334 61 49 20 34.5 2.5 679.5335 62 48 17 32.5 0.5 680336 63 53 20 36.5 4.5 684.5
337 64 48 19 33.5 1.5 686338 65 46 18 32 0 686339 66 52 27 39.5 7.5 693.5340 67 48 35 41.5 9.5 703
341 68 36 20 28 -4 699342 69 32 13 22.5 -9.5 689.5343 70 28 3 15.5 -16.5 673344 71 27 5 16 -16 657
345 72 33 17 25 -7 650346 73 49 21 35 3 653347 74 43 22 32.5 0.5 653.5348 75 42 24 33 1 654.5349 76 42 19 30.5 -1.5 653350 77 39 19 29 -3 650351 78 46 19 32.5 0.5 650.5352 79 42 16 29 -3 647.5353 80 41 18 29.5 -2.5 645354 81 37 12 24.5 -7.5 637.5355 82 38 13 25.5 -6.5 631356 83 38 16 27 -5 626357 84 36 10 23 -9 617
358 85 45 9 27 -5 612359 86 42 16 29 -3 609360 87 45 14 29.5 -2.5 606.5361 88 51 20 35.5 3.5 610
362 89 56 23 39.5 7.5 617.5363 90 48 20 34 2 619.5364 91 45 19 32 0 619.5365 92 46 22 34 2 621.5
1 93 44 20 32 0 621.52 94 42 25 33.5 1.5 6233 95 41 25 33 1 6244 96 42 29 35.5 3.5 627.5
5 97 41 25 33 1 628.56 98 41 23 32 0 628.57 99 38 21 29.5 -2.5 6268 100 44 32 38 6 6329 101 34 18 26 -6 62610 102 35 21 28 -4 62211 103 36 30 33 1 62312 104 36 32 34 2 62513 105 39 33 36 4 62914 106 48 27 37.5 5.5 634.515 107 46 27 36.5 4.5 63916 108 38 20 29 -3 63617 109 41 17 29 -3 633
18 110 42 17 29.5 -2.5 630.519 111 37 16 26.5 -5.5 62520 112 36 20 28 -4 62121 113 36 17 26.5 -5.5 615.5
22 114 30 12 21 -11 604.523 115 37 15 26 -6 598.524 116 37 26 31.5 -0.5 59825 117 41 26 33.5 1.5 599.5
26 118 37 29 33 1 600.527 119 34 20 27 -5 595.528 120 33 8 20.5 -11.5 58429 121 35 7 21 -11 573
30 122 33 16 24.5 -7.5 565.5
31 123 30 14 22 -10 555.532 124 38 6 22 -10 545.533 125 46 13 29.5 -2.5 54334 126 40 13 26.5 -5.5 537.5
35 127 44 9 26.5 -5.5 53236 128 44 9 26.5 -5.5 526.537 129 37 10 23.5 -8.5 51838 130 41 14 27.5 -4.5 513.5
39 131 47 33 40 8 521.540 132 52 31 41.5 9.5 53141 133 46 30 38 6 53742 134 55 34 44.5 12.5 549.543 135 54 31 42.5 10.5 56044 136 52 31 41.5 9.5 569.545 137 53 34 43.5 11.5 58146 138 58 33 45.5 13.5 594.547 139 58 35 46.5 14.5 60948 140 58 37 47.5 15.5 624.549 141 53 34 43.5 11.5 63650 142 46 36 41 9 64551 143 47 36 41.5 9.5 654.5
52 144 47 37 42 10 664.553 145 51 37 44 12 676.554 146 41 35 38 6 682.555 147 50 30 40 8 690.5
56 148 53 31 42 10 700.557 149 54 33 43.5 11.5 71258 150 54 34 44 12 72459 151 53 29 41 9 733
60 152 48 33 40.5 8.5 741.561 153 47 32 39.5 7.5 74962 154 45 30 37.5 5.5 754.563 155 48 26 37 5 759.5
64 156 48 29 38.5 6.5 76665 157 49 28 38.5 6.5 772.566 158 58 32 45 13 785.567 159 61 34 47.5 15.5 80168 160 60 35 47.5 15.5 816.569 161 56 37 46.5 14.5 83170 162 55 31 43 11 84271 163 57 29 43 11 85372 164 42 27 34.5 2.5 855.573 165 44 17 30.5 -1.5 85474 166 55 23 39 7 86175 167 53 32 42.5 10.5 871.576 168 46 26 36 4 875.5
77 169 53 29 41 9 884.578 170 60 28 44 12 896.579 171 53 36 44.5 12.5 90980 172 57 30 43.5 11.5 920.5
81 173 35 23 29 -3 917.582 174 36 23 29.5 -2.5 91583 175 47 24 35.5 3.5 918.584 176 56 21 38.5 6.5 925
85 177 55 33 44 12 93786 178 58 23 40.5 8.5 945.587 179 60 26 43 11 956.588 180 62 33 47.5 15.5 972
89 181 58 37 47.5 15.5 987.590 182 60 30 45 13 1000.591 183 49 32 40.5 8.5 100992 184 46 31 38.5 6.5 1015.593 185 50 31 40.5 8.5 102494 186 46 27 36.5 4.5 1028.595 187 60 25 42.5 10.5 103996 188 66 39 52.5 20.5 1059.597 189 45 28 36.5 4.5 106498 190 51 26 38.5 6.5 1070.599 191 63 27 45 13 1083.5100 192 67 33 50 18 1101.5101 193 68 36 52 20 1121.5
102 194 68 44 56 24 1145.5103 195 70 41 55.5 23.5 1169104 196 65 41 53 21 1190105 197 66 36 51 19 1209
106 198 65 42 53.5 21.5 1230.5107 199 65 37 51 19 1249.5108 200 55 35 45 13 1262.5109 201 56 30 43 11 1273.5
110 202 61 33 47 15 1288.5111 203 66 38 52 20 1308.5112 204 50 30 40 8 1316.5113 205 48 30 39 7 1323.5
114 206 53 29 41 9 1332.5115 207 56 29 42.5 10.5 1343116 208 55 26 40.5 8.5 1351.5117 209 54 32 43 11 1362.5118 210 53 34 43.5 11.5 1374119 211 53 36 44.5 12.5 1386.5120 212 64 38 51 19 1405.5121 213 71 43 57 25 1430.5122 214 71 41 56 24 1454.5123 215 73 40 56.5 24.5 1479124 216 74 40 57 25 1504125 217 74 46 60 28 1532126 218 71 45 58 26 1558
127 219 60 47 53.5 21.5 1579.5128 220 60 42 51 19 1598.5129 221 68 37 52.5 20.5 1619130 222 63 42 52.5 20.5 1639.5
131 223 52 35 43.5 11.5 1651132 224 54 35 44.5 12.5 1663.5133 225 59 34 46.5 14.5 1678134 226 62 41 51.5 19.5 1697.5
135 227 53 34 43.5 11.5 1709136 228 55 31 43 11 1720137 229 63 35 49 17 1737138 230 67 37 52 20 1757
139 231 60 40 50 18 1775
140 232 54 36 45 13 1788141 233 53 32 42.5 10.5 1798.5142 234 61 32 46.5 14.5 1813143 235 57 38 47.5 15.5 1828.5
144 236 50 37 43.5 11.5 1840145 237 63 36 49.5 17.5 1857.5146 238 73 39 56 24 1881.5147 239 74 42 58 26 1907.5
148 240 79 45 62 30 1937.5149 241 78 54 66 34 1971.5150 242 78 45 61.5 29.5 2001151 243 77 47 62 30 2031152 244 76 46 61 29 2060153 245 79 48 63.5 31.5 2091.5154 246 86 47 66.5 34.5 2126155 247 88 50 69 37 2163156 248 89 57 73 41 2204157 249 90 54 72 40 2244158 250 86 52 69 37 2281159 251 85 48 66.5 34.5 2315.5160 252 80 48 64 32 2347.5
161 253 55 45 50 18 2365.5162 254 62 44 53 21 2386.5163 255 73 42 57.5 25.5 2412164 256 77 47 62 30 2442
165 257 77 45 61 29 2471166 258 69 47 58 26 2497167 259 63 40 51.5 19.5 2516.5168 260 71 35 53 21 2537.5
169 261 79 48 63.5 31.5 2569170 262 87 49 68 36 2605171 263 86 50 68 36 2641172 264 78 46 62 30 2671
173 265 83 49 66 34 2705174 266 82 49 65.5 33.5 2738.5175 267 88 51 69.5 37.5 2776176 268 92 51 71.5 39.5 2815.5177 269 90 53 71.5 39.5 2855178 270 90 54 72 40 2895179 271 95 57 76 44 2939180 272 90 59 74.5 42.5 2981.5181 273 90 57 73.5 41.5 3023182 274 90 52 71 39 3062183 275 93 55 74 42 3104184 276 92 58 75 43 3147185 277 91 65 78 46 3193
186 278 92 54 73 41 3234187 279 91 59 75 43 3277188 280 87 58 72.5 40.5 3317.5189 281 86 60 73 41 3358.5
190 282 85 57 71 39 3397.5191 283 88 60 74 42 3439.5192 284 88 59 73.5 41.5 3481193 285 85 52 68.5 36.5 3517.5
194 286 89 54 71.5 39.5 3557195 287 89 54 71.5 39.5 3596.5196 288 93 55 74 42 3638.5197 289 91 58 74.5 42.5 3681
198 290 86 56 71 39 3720199 291 80 54 67 35 3755200 292 82 51 66.5 34.5 3789.5201 293 81 60 70.5 38.5 3828202 294 88 52 70 38 3866203 295 88 54 71 39 3905204 296 69 53 61 29 3934205 297 83 47 65 33 3967206 298 74 56 65 33 4000207 299 83 55 69 37 4037208 300 84 58 71 39 4076209 301 89 55 72 40 4116210 302 87 62 74.5 42.5 4158.5
211 303 90 56 73 41 4199.5212 304 94 58 76 44 4243.5213 305 97 62 79.5 47.5 4291214 306 96 57 76.5 44.5 4335.5
215 307 93 58 75.5 43.5 4379216 308 83 60 71.5 39.5 4418.5217 309 80 61 70.5 38.5 4457218 310 71 59 65 33 4490
219 311 85 58 71.5 39.5 4529.5220 312 87 50 68.5 36.5 4566221 313 90 47 68.5 36.5 4602.5222 314 88 57 72.5 40.5 4643
223 315 88 56 72 40 4683224 316 88 54 71 39 4722225 317 88 55 71.5 39.5 4761.5226 318 91 55 73 41 4802.5227 319 88 60 74 42 4844.5228 320 88 55 71.5 39.5 4884229 321 89 58 73.5 41.5 4925.5230 322 88 56 72 40 4965.5231 323 85 60 72.5 40.5 5006232 324 82 58 70 38 5044233 325 81 56 68.5 36.5 5080.5234 326 83 54 68.5 36.5 5117235 327 85 52 68.5 36.5 5153.5
236 328 88 55 71.5 39.5 5193237 329 85 52 68.5 36.5 5229.5238 330 79 51 65 33 5262.5239 331 79 49 64 32 5294.5
240 332 80 52 66 34 5328.5241 333 77 53 65 33 5361.5242 334 66 50 58 26 5387.5243 335 73 46 59.5 27.5 5415
244 336 75 47 61 29 5444245 337 80 45 62.5 30.5 5474.5246 338 82 45 63.5 31.5 5506247 339 84 47 65.5 33.5 5539.5 1000
1200
1400
-da
y
)
Blanding, UT
248 340 82 46 64 32 5571.5
249 341 84 52 68 36 5607.5250 342 82 53 67.5 35.5 5643251 343 89 45 67 35 5678252 344 83 53 68 36 5714
253 345 79 42 60.5 28.5 5742.5254 346 77 40 58.5 26.5 5769255 347 78 40 59 27 5796256 348 81 40 60.5 28.5 5824.5
257 349 76 43 59.5 27.5 5852258 350 79 41 60 28 5880259 351 80 44 62 30 5910260 352 82 49 65.5 33.5 5943.5261 353 70 38 54 22 5965.5262 354 73 38 55.5 23.5 5989263 355 72 41 56.5 24.5 6013.5264 356 70 34 52 20 6033.5265 357 71 43 57 25 6058.5266 358 78 38 58 26 6084.5267 359 80 40 60 28 6112.5268 360 80 41 60.5 28.5 6141 67 703 length of freeze (day) 64
269 361 80 41 60.5 28.5 6169.5 131 521.5 frost index (oF-day)181.5270 362 81 44 62.5 30.5 6200 average temperature 49.3271 363 83 44 63.5 31.5 6231.5272 364 83 46 64.5 32.5 6264273 365 84 48 66 34 6298
1962-1963 day of frost year degree cumulative
day of year (consecutive date) max. temp. min. temp avg. temp day (
oF) degree day (
oF)274 1 69 40 54.5 22.5 22.5275 2 69 39 54 22 44.5276 3 73 42 57.5 25.5 70277 4 76 46 61 29 99278 5 60 48 54 22 121279 6 64 36 50 18 139280 7 67 37 52 20 159281 8 70 38 54 22 181282 9 73 40 56.5 24.5 205.5283 10 72 40 56 24 229.5
284 11 69 38 53.5 21.5 251285 12 67 40 53.5 21.5 272.5286 13 70 39 54.5 22.5 295287 14 72 39 55.5 23.5 318.5
288 15 64 42 53 21 339.5289 16 57 45 51 19 358.5290 17 54 42 48 16 374.5291 18 59 44 51.5 19.5 394
292 19 56 39 47.5 15.5 409.5293 20 64 35 49.5 17.5 427294 21 64 36 50 18 445295 22 67 37 52 20 465
296 23 65 37 51 19 484297 24 68 37 52.5 20.5 504.5298 25 64 38 51 19 523.5299 26 63 38 50.5 18.5 542300 27 68 34 51 19 561301 28 67 35 51 19 580302 29 65 37 51 19 599303 30 66 37 51.5 19.5 618.5304 31 65 37 51 19 637.5305 32 69 38 53.5 21.5 659306 33 67 38 52.5 20.5 679.5307 34 64 35 49.5 17.5 697308 35 59 35 47 15 712
309 36 62 34 48 16 728310 37 63 43 53 21 749311 38 61 30 45.5 13.5 762.5312 39 58 26 42 10 772.5
313 40 56 28 42 10 782.5314 41 60 29 44.5 12.5 795315 42 60 29 44.5 12.5 807.5316 43 61 28 44.5 12.5 820
317 44 61 36 48.5 16.5 836.5318 45 53 42 47.5 15.5 852319 46 53 40 46.5 14.5 866.5320 47 47 31 39 7 873.5
321 48 44 28 36 4 877.5322 49 34 22 28 -4 873.5323 50 39 13 26 -6 867.5324 51 50 22 36 4 871.5325 52 55 30 42.5 10.5 882326 53 52 29 40.5 8.5 890.5327 54 53 31 42 10 900.5328 55 52 35 43.5 11.5 912329 56 51 34 42.5 10.5 922.5330 57 50 28 39 7 929.5331 58 44 28 36 4 933.5332 59 54 28 41 9 942.5333 60 50 32 41 9 951.5
334 61 52 34 43 11 962.5335 62 44 33 38.5 6.5 969336 63 50 29 39.5 7.5 976.5337 64 48 29 38.5 6.5 983
338 65 51 30 40.5 8.5 991.5339 66 52 25 38.5 6.5 998340 67 52 24 38 6 1004341 68 57 28 42.5 10.5 1014.5
342 69 58 28 43 11 1025.5343 70 58 29 43.5 11.5 1037344 71 50 24 37 5 1042345 72 50 22 36 4 1046
346 73 48 21 34.5 2.5 1048.5347 74 50 22 36 4 1052.5348 75 49 20 34.5 2.5 1055349 76 50 22 36 4 1059350 77 50 25 37.5 5.5 1064.5351 78 56 24 40 8 1072.5
0
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0 50 100 150 200 250
fr
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day of frost year
1956-1957
352 79 46 34 40 8 1080.5
353 80 42 30 36 4 1084.5354 81 46 26 36 4 1088.5355 82 45 23 34 2 1090.5356 83 47 22 34.5 2.5 1093
357 84 44 19 31.5 -0.5 1092.5358 85 33 14 23.5 -8.5 1084359 86 27 2 14.5 -17.5 1066.5360 87 27 -2 12.5 -19.5 1047
361 88 29 -1 14 -18 1029362 89 32 4 18 -14 1015363 90 37 11 24 -8 1007364 91 39 11 25 -7 1000365 92 38 11 24.5 -7.5 992.51 93 40 17 28.5 -3.5 9892 94 36 14 25 -7 9823 95 35 25 30 -2 9804 96 49 15 32 0 9805 97 37 15 26 -6 9746 98 37 17 27 -5 9697 99 27 10 18.5 -13.5 955.58 100 23 14 18.5 -13.5 942
9 101 22 13 17.5 -14.5 927.510 102 31 11 21 -11 916.511 103 17 -7 5 -27 889.512 104 10 -20 -5 -37 852.5
13 105 11 -19 -4 -36 816.514 106 15 -10 2.5 -29.5 78715 107 18 -4 7 -25 76216 108 27 -2 12.5 -19.5 742.5
17 109 27 -1 13 -19 723.518 110 32 9 20.5 -11.5 71219 111 22 0 11 -21 69120 112 25 0 12.5 -19.5 671.5
21 113 28 3 15.5 -16.5 65522 114 33 6 19.5 -12.5 642.523 115 39 10 24.5 -7.5 63524 116 37 10 23.5 -8.5 626.525 117 38 13 25.5 -6.5 62026 118 36 10 23 -9 61127 119 33 5 19 -13 59828 120 40 10 25 -7 59129 121 40 21 30.5 -1.5 589.530 122 37 32 34.5 2.5 59231 123 42 34 38 6 59832 124 46 37 41.5 9.5 607.533 125 52 32 42 10 617.5
34 126 52 29 40.5 8.5 62635 127 55 31 43 11 63736 128 60 35 47.5 15.5 652.537 129 61 33 47 15 667.5
38 130 60 30 45 13 680.539 131 58 33 45.5 13.5 69440 132 52 33 42.5 10.5 704.541 133 45 28 36.5 4.5 709
42 134 34 17 25.5 -6.5 702.543 135 25 0 12.5 -19.5 68344 136 33 4 18.5 -13.5 669.545 137 32 10 21 -11 658.5
46 138 42 23 32.5 0.5 65947 139 41 20 30.5 -1.5 657.548 140 41 19 30 -2 655.549 141 47 24 35.5 3.5 65950 142 50 32 41 9 66851 143 51 31 41 9 67752 144 52 33 42.5 10.5 687.553 145 50 29 39.5 7.5 69554 146 52 27 39.5 7.5 702.555 147 53 29 41 9 711.556 148 54 31 42.5 10.5 72257 149 52 25 38.5 6.5 728.558 150 43 30 36.5 4.5 733
59 151 47 23 35 3 73660 152 48 19 33.5 1.5 737.561 153 44 22 33 1 738.562 154 42 27 34.5 2.5 741
63 155 36 23 29.5 -2.5 738.564 156 41 15 28 -4 734.565 157 45 21 33 1 735.566 158 48 18 33 1 736.5
67 159 53 24 38.5 6.5 74368 160 54 24 39 7 75069 161 53 33 43 11 76170 162 44 22 33 1 762
71 163 40 19 29.5 -2.5 759.572 164 45 12 28.5 -3.5 75673 165 48 22 35 3 75974 166 47 26 36.5 4.5 763.575 167 37 16 26.5 -5.5 75876 168 40 28 34 2 76077 169 39 21 30 -2 75878 170 48 20 34 2 76079 171 58 25 41.5 9.5 769.580 172 61 35 48 16 785.581 173 60 33 46.5 14.5 80082 174 61 33 47 15 81583 175 58 28 43 11 826
84 176 60 31 45.5 13.5 839.585 177 64 31 47.5 15.5 85586 178 64 30 47 15 87087 179 65 40 52.5 20.5 890.5
88 180 61 32 46.5 14.5 90589 181 64 35 49.5 17.5 922.590 182 66 35 50.5 18.5 94191 183 62 36 49 17 958
92 184 44 22 33 1 95993 185 51 18 34.5 2.5 961.594 186 59 28 43.5 11.5 97395 187 64 30 47 15 988
96 188 67 31 49 17 1005
97 189 69 43 56 24 102998 190 66 40 53 21 105099 191 65 42 53.5 21.5 1071.5100 192 53 30 41.5 9.5 1081
101 193 60 25 42.5 10.5 1091.5102 194 67 30 48.5 16.5 1108103 195 74 34 54 22 1130104 196 76 44 60 28 1158
105 197 62 39 50.5 18.5 1176.5106 198 60 28 44 12 1188.5107 199 55 29 42 10 1198.5108 200 45 25 35 3 1201.5109 201 52 22 37 5 1206.5110 202 59 30 44.5 12.5 1219111 203 56 32 44 12 1231112 204 52 21 36.5 4.5 1235.5113 205 60 27 43.5 11.5 1247114 206 62 27 44.5 12.5 1259.5115 207 63 32 47.5 15.5 1275116 208 56 33 44.5 12.5 1287.5117 209 46 26 36 4 1291.5
118 210 59 28 43.5 11.5 1303119 211 66 35 50.5 18.5 1321.5120 212 70 40 55 23 1344.5121 213 73 40 56.5 24.5 1369
122 214 74 36 55 23 1392123 215 75 40 57.5 25.5 1417.5124 216 75 41 58 26 1443.5125 217 80 40 60 28 1471.5
126 218 82 45 63.5 31.5 1503127 219 83 49 66 34 1537128 220 82 50 66 34 1571129 221 76 53 64.5 32.5 1603.5
130 222 77 42 59.5 27.5 1631131 223 74 44 59 27 1658132 224 65 30 47.5 15.5 1673.5133 225 78 38 58 26 1699.5134 226 71 44 57.5 25.5 1725135 227 76 40 58 26 1751136 228 79 42 60.5 28.5 1779.5137 229 81 46 63.5 31.5 1811138 230 84 44 64 32 1843139 231 84 52 68 36 1879140 232 80 47 63.5 31.5 1910.5141 233 83 52 67.5 35.5 1946142 234 83 49 66 34 1980
143 235 71 48 59.5 27.5 2007.5144 236 74 43 58.5 26.5 2034145 237 76 45 60.5 28.5 2062.5146 238 79 45 62 30 2092.5
147 239 81 48 64.5 32.5 2125148 240 82 49 65.5 33.5 2158.5149 241 81 48 64.5 32.5 2191150 242 79 44 61.5 29.5 2220.5
151 243 79 43 61 29 2249.5152 244 83 50 66.5 34.5 2284153 245 76 45 60.5 28.5 2312.5154 246 79 48 63.5 31.5 2344
155 247 78 48 63 31 2375156 248 73 41 57 25 2400157 249 75 44 59.5 27.5 2427.5158 250 76 43 59.5 27.5 2455159 251 75 45 60 28 2483160 252 72 39 55.5 23.5 2506.5161 253 77 45 61 29 2535.5162 254 76 43 59.5 27.5 2563163 255 83 49 66 34 2597164 256 82 55 68.5 36.5 2633.5165 257 82 53 67.5 35.5 2669166 258 79 46 62.5 30.5 2699.5167 259 81 53 67 35 2734.5
168 260 85 51 68 36 2770.5169 261 85 56 70.5 38.5 2809170 262 82 53 67.5 35.5 2844.5171 263 90 54 72 40 2884.5
172 264 87 49 68 36 2920.5173 265 85 47 66 34 2954.5174 266 87 48 67.5 35.5 2990175 267 84 51 67.5 35.5 3025.5
176 268 85 49 67 35 3060.5177 269 89 50 69.5 37.5 3098178 270 91 50 70.5 38.5 3136.5179 271 92 53 72.5 40.5 3177
180 272 88 47 67.5 35.5 3212.5181 273 90 50 70 38 3250.5182 274 96 63 79.5 47.5 3298183 275 93 73 83 51 3349184 276 90 66 78 46 3395185 277 91 63 77 45 3440186 278 91 58 74.5 42.5 3482.5187 279 93 59 76 44 3526.5188 280 94 63 78.5 46.5 3573189 281 89 64 76.5 44.5 3617.5190 282 86 62 74 42 3659.5191 283 85 58 71.5 39.5 3699192 284 87 55 71 39 3738
193 285 86 57 71.5 39.5 3777.5194 286 84 55 69.5 37.5 3815195 287 90 56 73 41 3856196 288 93 57 75 43 3899
197 289 91 60 75.5 43.5 3942.5198 290 92 58 75 43 3985.5199 291 94 60 77 45 4030.5200 292 96 60 78 46 4076.5
201 293 93 61 77 45 4121.5202 294 92 62 77 45 4166.5203 295 90 62 76 44 4210.5204 296 86 60 73 41 4251.5
205 297 94 60 77 45 4296.5
206 298 95 62 78.5 46.5 4343207 299 93 61 77 45 4388208 300 93 57 75 43 4431209 301 93 56 74.5 42.5 4473.5
210 302 93 56 74.5 42.5 4516211 303 93 57 75 43 4559212 304 94 56 75 43 4602213 305 90 63 76.5 44.5 4646.5
214 306 81 60 70.5 38.5 4685215 307 76 59 67.5 35.5 4720.5216 308 79 60 69.5 37.5 4758217 309 84 60 72 40 4798218 310 87 60 73.5 41.5 4839.5219 311 86 62 74 42 4881.5220 312 88 58 73 41 4922.5221 313 88 59 73.5 41.5 4964222 314 80 58 69 37 5001223 315 83 56 69.5 37.5 5038.5224 316 89 55 72 40 5078.5225 317 88 60 74 42 5120.5226 318 90 57 73.5 41.5 5162
227 319 90 61 75.5 43.5 5205.5228 320 90 63 76.5 44.5 5250229 321 80 59 69.5 37.5 5287.5230 322 89 55 72 40 5327.5
231 323 88 58 73 41 5368.5232 324 85 63 74 42 5410.5233 325 86 58 72 40 5450.5234 326 82 62 72 40 5490.5
235 327 80 54 67 35 5525.5236 328 86 55 70.5 38.5 5564237 329 87 58 72.5 40.5 5604.5238 330 77 60 68.5 36.5 5641
239 331 78 57 67.5 35.5 5676.5240 332 85 52 68.5 36.5 5713241 333 87 53 70 38 5751242 334 68 55 61.5 29.5 5780.5243 335 70 51 60.5 28.5 5809244 336 74 46 60 28 5837245 337 81 50 65.5 33.5 5870.5246 338 84 52 68 36 5906.5247 339 85 55 70 38 5944.5248 340 78 57 67.5 35.5 5980249 341 78 58 68 36 6016250 342 82 53 67.5 35.5 6051.5251 343 83 54 68.5 36.5 6088
252 344 85 55 70 38 6126253 345 83 55 69 37 6163254 346 84 53 68.5 36.5 6199.5255 347 86 53 69.5 37.5 6237
256 348 79 52 65.5 33.5 6270.5257 349 75 50 62.5 30.5 6301258 350 77 46 61.5 29.5 6330.5259 351 79 52 65.5 33.5 6364
260 352 79 47 63 31 6395261 353 80 56 68 36 6431262 354 80 50 65 33 6464263 355 79 54 66.5 34.5 6498.5
264 356 75 47 61 29 6527.5265 357 80 50 65 33 6560.5266 358 85 53 69 37 6597.5267 359 85 53 69 37 6634.5268 360 85 45 65 33 6667.5 84 1092.5 length of freeze (day) 37269 361 85 48 66.5 34.5 6702 121 589.5 frost index (oF-day)503270 362 86 45 65.5 33.5 6735.5 average temperature 50.7271 363 86 48 67 35 6770.5272 364 83 49 66 34 6804.5273 365 85 46 65.5 33.5 6838
1963-1964 day of frost year degree cumulative
day of year (consecutive date) max. temp. min. temp avg. temp day (
oF) degree day (
oF)
274 1 85 56 70.5 38.5 38.5275 2 82 55 68.5 36.5 75276 3 82 49 65.5 33.5 108.5277 4 80 48 64 32 140.5
278 5 75 46 60.5 28.5 169279 6 77 46 61.5 29.5 198.5280 7 79 45 62 30 228.5281 8 80 46 63 31 259.5282 9 78 51 64.5 32.5 292283 10 78 46 62 30 322284 11 76 46 61 29 351285 12 73 44 58.5 26.5 377.5286 13 67 36 51.5 19.5 397287 14 71 37 54 22 419288 15 73 38 55.5 23.5 442.5289 16 76 39 57.5 25.5 468290 17 71 46 58.5 26.5 494.5
291 18 72 45 58.5 26.5 521292 19 59 48 53.5 21.5 542.5293 20 54 44 49 17 559.5294 21 63 40 51.5 19.5 579
295 22 64 38 51 19 598296 23 63 41 52 20 618297 24 65 39 52 20 638298 25 64 36 50 18 656
299 26 67 39 53 21 677300 27 71 40 55.5 23.5 700.5301 28 67 37 52 20 720.5302 29 68 43 55.5 23.5 744
303 30 65 39 52 20 764304 31 54 34 44 12 776305 32 53 29 41 9 785306 33 55 30 42.5 10.5 795.5307 34 56 38 47 15 810.5308 35 55 32 43.5 11.5 822
0
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800
1000
1200
1400
0 50 100 150 200 250
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day of frost year
Blanding, UT
1962-1963
309 36 58 32 45 13 835
310 37 58 33 45.5 13.5 848.5311 38 60 37 48.5 16.5 865312 39 60 32 46 14 879313 40 65 35 50 18 897
314 41 65 38 51.5 19.5 916.5315 42 65 35 50 18 934.5316 43 60 30 45 13 947.5317 44 59 33 46 14 961.5
318 45 62 35 48.5 16.5 978319 46 60 35 47.5 15.5 993.5320 47 47 29 38 6 999.5321 48 43 19 31 -1 998.5322 49 46 25 35.5 3.5 1002323 50 48 25 36.5 4.5 1006.5324 51 50 28 39 7 1013.5325 52 42 31 36.5 4.5 1018326 53 46 25 35.5 3.5 1021.5327 54 45 22 33.5 1.5 1023328 55 45 29 37 5 1028329 56 49 30 39.5 7.5 1035.5330 57 48 24 36 4 1039.5
331 58 50 23 36.5 4.5 1044332 59 55 28 41.5 9.5 1053.5333 60 51 25 38 6 1059.5334 61 50 22 36 4 1063.5
335 62 51 24 37.5 5.5 1069336 63 47 19 33 1 1070337 64 48 19 33.5 1.5 1071.5338 65 51 18 34.5 2.5 1074
339 66 50 20 35 3 1077340 67 44 19 31.5 -0.5 1076.5341 68 41 15 28 -4 1072.5342 69 40 12 26 -6 1066.5
343 70 42 21 31.5 -0.5 1066344 71 35 22 28.5 -3.5 1062.5345 72 29 10 19.5 -12.5 1050346 73 31 8 19.5 -12.5 1037.5347 74 34 10 22 -10 1027.5348 75 28 10 19 -13 1014.5349 76 36 13 24.5 -7.5 1007350 77 39 13 26 -6 1001351 78 41 15 28 -4 997352 79 43 18 30.5 -1.5 995.5353 80 40 20 30 -2 993.5354 81 37 18 27.5 -4.5 989355 82 37 22 29.5 -2.5 986.5
356 83 43 18 30.5 -1.5 985357 84 49 17 33 1 986358 85 46 17 31.5 -0.5 985.5359 86 46 18 32 0 985.5
360 87 47 18 32.5 0.5 986361 88 48 19 33.5 1.5 987.5362 89 48 20 34 2 989.5363 90 43 22 32.5 0.5 990
364 91 45 16 30.5 -1.5 988.5365 92 48 21 34.5 2.5 9911 93 50 25 37.5 5.5 996.52 94 51 22 36.5 4.5 1001
3 95 43 18 30.5 -1.5 999.54 96 35 15 25 -7 992.55 97 33 13 23 -9 983.56 98 33 11 22 -10 973.57 99 39 18 28.5 -3.5 9708 100 31 11 21 -11 9599 101 30 5 17.5 -14.5 944.510 102 37 12 24.5 -7.5 93711 103 32 12 22 -10 92712 104 30 8 19 -13 91413 105 32 4 18 -14 90014 106 30 3 16.5 -15.5 884.515 107 36 4 20 -12 872.5
16 108 35 10 22.5 -9.5 86317 109 44 12 28 -4 85918 110 40 22 31 -1 85819 111 38 14 26 -6 852
20 112 42 20 31 -1 85121 113 47 20 33.5 1.5 852.522 114 39 24 31.5 -0.5 85223 115 32 10 21 -11 841
24 116 33 12 22.5 -9.5 831.525 117 38 12 25 -7 824.526 118 44 16 30 -2 822.527 119 45 18 31.5 -0.5 822
28 120 49 19 34 2 82429 121 45 20 32.5 0.5 824.530 122 49 17 33 1 825.531 123 48 19 33.5 1.5 82732 124 48 18 33 1 82833 125 36 25 30.5 -1.5 826.534 126 34 16 25 -7 819.535 127 50 19 34.5 2.5 82236 128 46 15 30.5 -1.5 820.537 129 32 13 22.5 -9.5 81138 130 38 10 24 -8 80339 131 48 12 30 -2 80140 132 52 18 35 3 804
41 133 54 21 37.5 5.5 809.542 134 46 27 36.5 4.5 81443 135 39 19 29 -3 81144 136 39 14 26.5 -5.5 805.5
45 137 32 17 24.5 -7.5 79846 138 35 6 20.5 -11.5 786.547 139 42 17 29.5 -2.5 78448 140 40 15 27.5 -4.5 779.5
49 141 42 21 31.5 -0.5 77950 142 45 16 30.5 -1.5 777.551 143 38 21 29.5 -2.5 77552 144 40 17 28.5 -3.5 771.5
53 145 42 14 28 -4 767.5
54 146 38 18 28 -4 763.555 147 44 11 27.5 -4.5 75956 148 37 21 29 -3 75657 149 40 11 25.5 -6.5 749.5
58 150 38 14 26 -6 743.559 151 43 14 28.5 -3.5 74060 152 48 19 33.5 1.5 741.561 153 49 19 34 2 743.5
62 154 40 29 34.5 2.5 74663 155 37 25 31 -1 74564 156 39 15 27 -5 74065 157 48 20 34 2 74266 158 36 17 26.5 -5.5 736.567 159 36 22 29 -3 733.568 160 35 19 27 -5 728.569 161 42 13 27.5 -4.5 72470 162 40 22 31 -1 72371 163 45 16 30.5 -1.5 721.572 164 47 27 37 5 726.573 165 41 24 32.5 0.5 72774 166 43 14 28.5 -3.5 723.5
75 167 47 22 34.5 2.5 72676 168 52 31 41.5 9.5 735.577 169 56 26 41 9 744.578 170 59 25 42 10 754.5
79 171 43 24 33.5 1.5 75680 172 48 25 36.5 4.5 760.581 173 55 24 39.5 7.5 76882 174 51 30 40.5 8.5 776.5
83 175 39 23 31 -1 775.584 176 36 25 30.5 -1.5 77485 177 45 16 30.5 -1.5 772.586 178 48 21 34.5 2.5 775
87 179 51 24 37.5 5.5 780.588 180 57 26 41.5 9.5 79089 181 64 30 47 15 80590 182 67 30 48.5 16.5 821.591 183 68 40 54 22 843.592 184 59 35 47 15 858.593 185 47 32 39.5 7.5 86694 186 49 32 40.5 8.5 874.595 187 51 28 39.5 7.5 88296 188 43 31 37 5 88797 189 41 30 35.5 3.5 890.598 190 44 29 36.5 4.5 89599 191 50 29 39.5 7.5 902.5
100 192 57 29 43 11 913.5101 193 59 33 46 14 927.5102 194 61 28 44.5 12.5 940103 195 53 32 42.5 10.5 950.5
104 196 60 30 45 13 963.5105 197 67 32 49.5 17.5 981106 198 72 35 53.5 21.5 1002.5107 199 74 39 56.5 24.5 1027
108 200 68 40 54 22 1049109 201 55 44 49.5 17.5 1066.5110 202 61 39 50 18 1084.5111 203 56 33 44.5 12.5 1097
112 204 62 30 46 14 1111113 205 63 32 47.5 15.5 1126.5114 206 68 38 53 21 1147.5115 207 50 26 38 6 1153.5116 208 46 24 35 3 1156.5117 209 57 26 41.5 9.5 1166118 210 63 40 51.5 19.5 1185.5119 211 70 35 52.5 20.5 1206120 212 57 40 48.5 16.5 1222.5121 213 63 38 50.5 18.5 1241122 214 66 39 52.5 20.5 1261.5123 215 54 40 47 15 1276.5124 216 64 29 46.5 14.5 1291
125 217 61 33 47 15 1306126 218 52 30 41 9 1315127 219 56 32 44 12 1327128 220 52 32 42 10 1337
129 221 59 30 44.5 12.5 1349.5130 222 66 37 51.5 19.5 1369131 223 70 41 55.5 23.5 1392.5132 224 71 38 54.5 22.5 1415
133 225 75 35 55 23 1438134 226 76 45 60.5 28.5 1466.5135 227 79 45 62 30 1496.5136 228 85 43 64 32 1528.5
137 229 83 45 64 32 1560.5138 230 79 44 61.5 29.5 1590139 231 83 45 64 32 1622140 232 85 52 68.5 36.5 1658.5141 233 85 51 68 36 1694.5142 234 86 51 68.5 36.5 1731143 235 82 49 65.5 33.5 1764.5144 236 82 46 64 32 1796.5145 237 84 50 67 35 1831.5146 238 86 56 71 39 1870.5147 239 67 51 59 27 1897.5148 240 77 47 62 30 1927.5149 241 71 36 53.5 21.5 1949
150 242 70 42 56 24 1973151 243 69 45 57 25 1998152 244 66 45 55.5 23.5 2021.5153 245 75 42 58.5 26.5 2048
154 246 80 52 66 34 2082155 247 79 52 65.5 33.5 2115.5156 248 83 49 66 34 2149.5157 249 85 53 69 37 2186.5
158 250 84 56 70 38 2224.5159 251 79 54 66.5 34.5 2259160 252 69 40 54.5 22.5 2281.5161 253 81 42 61.5 29.5 2311
162 254 79 46 62.5 30.5 2341.5
163 255 74 43 58.5 26.5 2368164 256 81 49 65 33 2401165 257 81 47 64 32 2433166 258 82 45 63.5 31.5 2464.5
167 259 89 50 69.5 37.5 2502168 260 87 53 70 38 2540169 261 74 51 62.5 30.5 2570.5170 262 76 37 56.5 24.5 2595
171 263 80 48 64 32 2627172 264 80 49 64.5 32.5 2659.5173 265 82 49 65.5 33.5 2693174 266 75 47 61 29 2722175 267 82 54 68 36 2758176 268 87 52 69.5 37.5 2795.5177 269 90 54 72 40 2835.5178 270 90 58 74 42 2877.5179 271 86 53 69.5 37.5 2915180 272 84 51 67.5 35.5 2950.5181 273 88 55 71.5 39.5 2990182 274 88 59 73.5 41.5 3031.5183 275 91 53 72 40 3071.5
184 276 92 55 73.5 41.5 3113185 277 92 58 75 43 3156186 278 91 59 75 43 3199187 279 92 59 75.5 43.5 3242.5
188 280 94 58 76 44 3286.5189 281 97 61 79 47 3333.5190 282 96 63 79.5 47.5 3381191 283 89 60 74.5 42.5 3423.5
192 284 86 57 71.5 39.5 3463193 285 93 63 78 46 3509194 286 87 58 72.5 40.5 3549.5195 287 89 60 74.5 42.5 3592
196 288 89 57 73 41 3633197 289 85 56 70.5 38.5 3671.5198 290 86 60 73 41 3712.5199 291 90 59 74.5 42.5 3755200 292 93 60 76.5 44.5 3799.5201 293 95 62 78.5 46.5 3846202 294 96 65 80.5 48.5 3894.5203 295 93 66 79.5 47.5 3942204 296 91 60 75.5 43.5 3985.5205 297 95 66 80.5 48.5 4034206 298 87 64 75.5 43.5 4077.5207 299 88 58 73 41 4118.5208 300 90 57 73.5 41.5 4160
209 301 89 62 75.5 43.5 4203.5210 302 91 64 77.5 45.5 4249211 303 93 63 78 46 4295212 304 88 63 75.5 43.5 4338.5
213 305 76 60 68 36 4374.5214 306 71 59 65 33 4407.5215 307 79 58 68.5 36.5 4444216 308 81 60 70.5 38.5 4482.5
217 309 86 60 73 41 4523.5218 310 87 60 73.5 41.5 4565219 311 89 60 74.5 42.5 4607.5220 312 89 62 75.5 43.5 4651
221 313 90 63 76.5 44.5 4695.5222 314 90 61 75.5 43.5 4739223 315 92 62 77 45 4784224 316 89 61 75 43 4827225 317 75 61 68 36 4863226 318 79 59 69 37 4900227 319 84 55 69.5 37.5 4937.5228 320 88 54 71 39 4976.5229 321 87 57 72 40 5016.5230 322 89 58 73.5 41.5 5058231 323 89 55 72 40 5098232 324 85 57 71 39 5137233 325 79 55 67 35 5172
234 326 77 44 60.5 28.5 5200.5235 327 83 50 66.5 34.5 5235236 328 86 48 67 35 5270237 329 90 50 70 38 5308
238 330 84 55 69.5 37.5 5345.5239 331 81 50 65.5 33.5 5379240 332 76 50 63 31 5410241 333 81 44 62.5 30.5 5440.5
242 334 79 52 65.5 33.5 5474243 335 81 55 68 36 5510244 336 84 50 67 35 5545245 337 83 52 67.5 35.5 5580.5
246 338 79 48 63.5 31.5 5612247 339 81 48 64.5 32.5 5644.5248 340 86 46 66 34 5678.5249 341 82 54 68 36 5714.5250 342 78 53 65.5 33.5 5748251 343 79 49 64 32 5780252 344 83 54 68.5 36.5 5816.5253 345 78 55 66.5 34.5 5851254 346 82 48 65 33 5884255 347 83 49 66 34 5918256 348 84 47 65.5 33.5 5951.5257 349 83 53 68 36 5987.5258 350 74 48 61 29 6016.5
259 351 64 50 57 25 6041.5260 352 76 42 59 27 6068.5261 353 77 42 59.5 27.5 6096262 354 77 49 63 31 6127
263 355 69 45 57 25 6152264 356 69 40 54.5 22.5 6174.5265 357 63 39 51 19 6193.5266 358 69 40 54.5 22.5 6216
267 359 77 45 61 29 6245268 360 78 50 64 32 6277269 361 76 46 61 29 6306270 362 73 45 59 27 6333
0
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0 50 100 150 200 250
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day of frost year
Blanding, UT
1963-1964
271 363 73 42 57.5 25.5 6358.5
272 364 75 46 60.5 28.5 6387 66 1077 length of freeze (day) 97
273 365 75 47 61 29 6416 163 721.5 frost index (oF-day)355.5274 366 76 44 60 28 6444 average temperature 49.6
1964-1965 day of frost year degree cumulative
day of year (consecutive date) max. temp. min. temp avg. temp day (
oF) degree day (
oF)274 1 79 45 62 30 30275 2 78 44 61 29 59276 3 81 43 62 30 89277 4 79 46 62.5 30.5 119.5278 5 76 44 60 28 147.5279 6 77 50 63.5 31.5 179280 7 76 44 60 28 207
281 8 78 42 60 28 235282 9 79 46 62.5 30.5 265.5283 10 76 48 62 30 295.5284 11 71 48 59.5 27.5 323
285 12 73 40 56.5 24.5 347.5286 13 71 37 54 22 369.5287 14 73 38 55.5 23.5 393288 15 75 41 58 26 419
289 16 70 41 55.5 23.5 442.5290 17 72 42 57 25 467.5291 18 70 40 55 23 490.5292 19 70 34 52 20 510.5
293 20 67 38 52.5 20.5 531294 21 68 35 51.5 19.5 550.5295 22 67 35 51 19 569.5296 23 61 30 45.5 13.5 583297 24 68 28 48 16 599298 25 65 30 47.5 15.5 614.5299 26 63 34 48.5 16.5 631300 27 64 35 49.5 17.5 648.5301 28 69 39 54 22 670.5302 29 73 43 58 26 696.5303 30 63 40 51.5 19.5 716304 31 64 32 48 16 732305 32 61 30 45.5 13.5 745.5
306 33 55 35 45 13 758.5307 34 56 32 44 12 770.5308 35 59 29 44 12 782.5309 36 57 28 42.5 10.5 793
310 37 65 29 47 15 808311 38 64 28 46 14 822312 39 63 33 48 16 838313 40 58 32 45 13 851
314 41 54 35 44.5 12.5 863.5315 42 43 22 32.5 0.5 864316 43 40 23 31.5 -0.5 863.5317 44 47 27 37 5 868.5
318 45 34 19 26.5 -5.5 863319 46 36 22 29 -3 860320 47 38 20 29 -3 857321 48 39 10 24.5 -7.5 849.5322 49 35 21 28 -4 845.5323 50 39 12 25.5 -6.5 839324 51 41 10 25.5 -6.5 832.5325 52 41 18 29.5 -2.5 830326 53 44 21 32.5 0.5 830.5327 54 47 21 34 2 832.5328 55 45 23 34 2 834.5329 56 49 23 36 4 838.5330 57 41 29 35 3 841.5
331 58 45 26 35.5 3.5 845332 59 46 22 34 2 847333 60 53 27 40 8 855334 61 51 26 38.5 6.5 861.5
335 62 44 28 36 4 865.5336 63 38 26 32 0 865.5337 64 43 20 31.5 -0.5 865338 65 40 21 30.5 -1.5 863.5
339 66 34 18 26 -6 857.5340 67 38 17 27.5 -4.5 853341 68 36 12 24 -8 845342 69 34 10 22 -10 835
343 70 34 18 26 -6 829344 71 36 13 24.5 -7.5 821.5345 72 37 18 27.5 -4.5 817346 73 32 16 24 -8 809347 74 31 5 18 -14 795348 75 28 6 17 -15 780349 76 35 10 22.5 -9.5 770.5350 77 40 14 27 -5 765.5351 78 40 15 27.5 -4.5 761352 79 37 18 27.5 -4.5 756.5353 80 40 23 31.5 -0.5 756354 81 39 28 33.5 1.5 757.5355 82 42 23 32.5 0.5 758
356 83 46 23 34.5 2.5 760.5357 84 47 26 36.5 4.5 765358 85 49 30 39.5 7.5 772.5359 86 48 28 38 6 778.5
360 87 44 28 36 4 782.5361 88 49 34 41.5 9.5 792362 89 40 25 32.5 0.5 792.5363 90 34 19 26.5 -5.5 787
364 91 31 16 23.5 -8.5 778.5365 92 32 27 29.5 -2.5 7761 93 35 6 20.5 -11.5 764.52 94 28 -1 13.5 -18.5 746
3 95 33 7 20 -12 7344 96 41 21 31 -1 7335 97 41 26 33.5 1.5 734.56 98 39 31 35 3 737.57 99 41 33 37 5 742.58 100 35 23 29 -3 739.5
9 101 37 21 29 -3 736.5
10 102 36 21 28.5 -3.5 73311 103 39 23 31 -1 73212 104 42 27 34.5 2.5 734.513 105 40 20 30 -2 732.5
14 106 43 21 32 0 732.515 107 44 24 34 2 734.516 108 45 26 35.5 3.5 73817 109 45 26 35.5 3.5 741.5
18 110 34 20 27 -5 736.519 111 35 24 29.5 -2.5 73420 112 39 24 31.5 -0.5 733.521 113 37 29 33 1 734.522 114 36 23 29.5 -2.5 73223 115 43 20 31.5 -0.5 731.524 116 38 27 32.5 0.5 73225 117 33 20 26.5 -5.5 726.526 118 31 17 24 -8 718.527 119 38 15 26.5 -5.5 71328 120 43 18 30.5 -1.5 711.529 121 48 24 36 4 715.530 122 56 30 43 11 726.5
31 123 57 30 43.5 11.5 73832 124 49 28 38.5 6.5 744.533 125 50 24 37 5 749.534 126 53 26 39.5 7.5 757
35 127 54 27 40.5 8.5 765.536 128 51 27 39 7 772.537 129 43 32 37.5 5.5 77838 130 37 22 29.5 -2.5 775.5
39 131 40 16 28 -4 771.540 132 36 25 30.5 -1.5 77041 133 28 14 21 -11 75942 134 27 3 15 -17 742
43 135 31 -2 14.5 -17.5 724.544 136 30 -2 14 -18 706.545 137 30 7 18.5 -13.5 69346 138 37 6 21.5 -10.5 682.547 139 36 8 22 -10 672.548 140 43 10 26.5 -5.5 66749 141 44 18 31 -1 66650 142 47 21 34 2 66851 143 49 24 36.5 4.5 672.552 144 50 26 38 6 678.553 145 54 30 42 10 688.554 146 34 22 28 -4 684.555 147 41 17 29 -3 681.5
56 148 50 24 37 5 686.557 149 53 25 39 7 693.558 150 51 28 39.5 7.5 70159 151 44 28 36 4 705
60 152 32 18 25 -7 69861 153 31 15 23 -9 68962 154 30 13 21.5 -10.5 678.563 155 42 12 27 -5 673.5
64 156 48 17 32.5 0.5 67465 157 50 20 35 3 67766 158 49 30 39.5 7.5 684.567 159 54 26 40 8 692.5
68 160 52 23 37.5 5.5 69869 161 52 24 38 6 70470 162 46 31 38.5 6.5 710.571 163 41 30 35.5 3.5 71472 164 42 29 35.5 3.5 717.573 165 46 23 34.5 2.5 72074 166 51 25 38 6 72675 167 50 30 40 8 73476 168 51 28 39.5 7.5 741.577 169 44 22 33 1 742.578 170 38 19 28.5 -3.5 73979 171 46 10 28 -4 73580 172 56 22 39 7 742
81 173 56 33 44.5 12.5 754.582 174 55 33 44 12 766.583 175 49 32 40.5 8.5 77584 176 40 17 28.5 -3.5 771.5
85 177 48 27 37.5 5.5 77786 178 53 30 41.5 9.5 786.587 179 56 33 44.5 12.5 79988 180 55 34 44.5 12.5 811.5
89 181 62 33 47.5 15.5 82790 182 67 34 50.5 18.5 845.591 183 66 34 50 18 863.592 184 53 30 41.5 9.5 873
93 185 50 30 40 8 88194 186 45 30 37.5 5.5 886.595 187 45 29 37 5 891.596 188 55 27 41 9 900.597 189 45 32 38.5 6.5 90798 190 49 33 41 9 91699 191 44 30 37 5 921100 192 38 19 28.5 -3.5 917.5101 193 41 18 29.5 -2.5 915102 194 52 30 41 9 924103 195 49 24 36.5 4.5 928.5104 196 54 25 39.5 7.5 936105 197 60 28 44 12 948
106 198 66 30 48 16 964107 199 69 36 52.5 20.5 984.5108 200 64 43 53.5 21.5 1006109 201 72 37 54.5 22.5 1028.5
110 202 75 42 58.5 26.5 1055111 203 77 44 60.5 28.5 1083.5112 204 75 42 58.5 26.5 1110113 205 69 40 54.5 22.5 1132.5
114 206 67 37 52 20 1152.5115 207 62 45 53.5 21.5 1174116 208 56 40 48 16 1190117 209 50 33 41.5 9.5 1199.5
118 210 62 33 47.5 15.5 1215
119 211 67 34 50.5 18.5 1233.5120 212 75 40 57.5 25.5 1259121 213 77 43 60 28 1287122 214 75 41 58 26 1313
123 215 71 37 54 22 1335124 216 66 41 53.5 21.5 1356.5125 217 64 30 47 15 1371.5126 218 63 31 47 15 1386.5
127 219 58 33 45.5 13.5 1400128 220 53 32 42.5 10.5 1410.5129 221 62 30 46 14 1424.5130 222 60 39 49.5 17.5 1442131 223 67 35 51 19 1461132 224 66 43 54.5 22.5 1483.5133 225 51 41 46 14 1497.5134 226 62 37 49.5 17.5 1515135 227 65 42 53.5 21.5 1536.5136 228 69 39 54 22 1558.5137 229 77 43 60 28 1586.5138 230 80 45 62.5 30.5 1617139 231 77 48 62.5 30.5 1647.5
140 232 78 48 63 31 1678.5141 233 79 48 63.5 31.5 1710142 234 76 49 62.5 30.5 1740.5143 235 64 44 54 22 1762.5
144 236 57 37 47 15 1777.5145 237 50 36 43 11 1788.5146 238 57 34 45.5 13.5 1802147 239 60 34 47 15 1817
148 240 69 38 53.5 21.5 1838.5149 241 74 42 58 26 1864.5150 242 75 45 60 28 1892.5151 243 75 46 60.5 28.5 1921
152 244 72 45 58.5 26.5 1947.5153 245 73 44 58.5 26.5 1974154 246 74 43 58.5 26.5 2000.5155 247 73 53 63 31 2031.5156 248 72 47 59.5 27.5 2059157 249 80 43 61.5 29.5 2088.5158 250 82 48 65 33 2121.5159 251 78 49 63.5 31.5 2153160 252 69 50 59.5 27.5 2180.5161 253 62 44 53 21 2201.5162 254 64 44 54 22 2223.5163 255 82 46 64 32 2255.5164 256 83 50 66.5 34.5 2290
165 257 80 49 64.5 32.5 2322.5166 258 75 47 61 29 2351.5167 259 62 46 54 22 2373.5168 260 75 46 60.5 28.5 2402
169 261 81 43 62 30 2432170 262 81 49 65 33 2465171 263 83 46 64.5 32.5 2497.5172 264 86 47 66.5 34.5 2532
173 265 84 49 66.5 34.5 2566.5174 266 83 52 67.5 35.5 2602175 267 73 51 62 30 2632176 268 76 48 62 30 2662
177 269 69 42 55.5 23.5 2685.5178 270 74 41 57.5 25.5 2711179 271 84 45 64.5 32.5 2743.5180 272 85 47 66 34 2777.5181 273 83 57 70 38 2815.5182 274 87 54 70.5 38.5 2854183 275 88 54 71 39 2893184 276 90 52 71 39 2932185 277 91 56 73.5 41.5 2973.5186 278 92 57 74.5 42.5 3016187 279 91 64 77.5 45.5 3061.5188 280 90 58 74 42 3103.5189 281 85 61 73 41 3144.5
190 282 91 57 74 42 3186.5191 283 89 55 72 40 3226.5192 284 84 58 71 39 3265.5193 285 77 54 65.5 33.5 3299
194 286 85 50 67.5 35.5 3334.5195 287 88 54 71 39 3373.5196 288 90 55 72.5 40.5 3414197 289 88 58 73 41 3455
198 290 87 58 72.5 40.5 3495.5199 291 83 60 71.5 39.5 3535200 292 86 55 70.5 38.5 3573.5201 293 88 59 73.5 41.5 3615
202 294 90 59 74.5 42.5 3657.5203 295 86 58 72 40 3697.5204 296 86 55 70.5 38.5 3736205 297 86 58 72 40 3776206 298 80 57 68.5 36.5 3812.5207 299 84 57 70.5 38.5 3851208 300 87 56 71.5 39.5 3890.5209 301 89 58 73.5 41.5 3932210 302 86 62 74 42 3974211 303 88 59 73.5 41.5 4015.5212 304 80 60 70 38 4053.5213 305 82 55 68.5 36.5 4090214 306 85 59 72 40 4130
215 307 85 54 69.5 37.5 4167.5216 308 90 55 72.5 40.5 4208217 309 91 55 73 41 4249218 310 89 60 74.5 42.5 4291.5
219 311 92 55 73.5 41.5 4333220 312 92 59 75.5 43.5 4376.5221 313 93 56 74.5 42.5 4419222 314 92 64 78 46 4465
223 315 90 57 73.5 41.5 4506.5224 316 93 59 76 44 4550.5225 317 91 58 74.5 42.5 4593226 318 91 56 73.5 41.5 4634.5
227 319 84 54 69 37 4671.5
228 320 85 58 71.5 39.5 4711229 321 79 54 66.5 34.5 4745.5230 322 78 56 67 35 4780.5231 323 81 50 65.5 33.5 4814
232 324 82 46 64 32 4846233 325 81 53 67 35 4881234 326 82 49 65.5 33.5 4914.5235 327 83 50 66.5 34.5 4949
236 328 86 48 67 35 4984237 329 87 46 66.5 34.5 5018.5238 330 88 50 69 37 5055.5239 331 89 50 69.5 37.5 5093240 332 89 55 72 40 5133241 333 75 53 64 32 5165242 334 76 49 62.5 30.5 5195.5243 335 78 46 62 30 5225.5244 336 79 47 63 31 5256.5245 337 79 50 64.5 32.5 5289246 338 79 49 64 32 5321247 339 79 45 62 30 5351248 340 77 53 65 33 5384
249 341 78 53 65.5 33.5 5417.5250 342 80 49 64.5 32.5 5450251 343 78 52 65 33 5483252 344 77 51 64 32 5515
253 345 80 48 64 32 5547254 346 76 51 63.5 31.5 5578.5255 347 77 49 63 31 5609.5256 348 80 49 64.5 32.5 5642
257 349 81 45 63 31 5673258 350 79 43 61 29 5702259 351 83 44 63.5 31.5 5733.5260 352 65 42 53.5 21.5 5755
261 353 51 40 45.5 13.5 5768.5262 354 53 40 46.5 14.5 5783263 355 53 34 43.5 11.5 5794.5264 356 60 28 44 12 5806.5265 357 67 36 51.5 19.5 5826266 358 73 39 56 24 5850267 359 76 41 58.5 26.5 5876.5268 360 77 43 60 28 5904.5 64 865 length of freeze (day) 78
269 361 76 44 60 28 5932.5 142 668 frost index (oF-day)197270 362 79 44 61.5 29.5 5962 average temperature 48.5271 363 73 43 58 26 5988272 364 57 38 47.5 15.5 6003.5273 365 62 34 48 16 6019.5
1970-1971 day of frost year degree cumulative
day of year (consecutive date) max. temp. min. temp avg. temp day (
oF) degree day (
oF)274 1 79 46 62.5 30.5 30.5
275 2 77 43 60 28 58.5276 3 70 42 56 24 82.5277 4 71 44 57.5 25.5 108278 5 72 45 58.5 26.5 134.5279 6 70 40 55 23 157.5280 7 52 31 41.5 9.5 167281 8 52 28 40 8 175282 9 58 27 42.5 10.5 185.5283 10 61 35 48 16 201.5284 11 63 27 45 13 214.5285 12 67 32 49.5 17.5 232286 13 70 37 53.5 21.5 253.5287 14 68 38 53 21 274.5
288 15 58 35 46.5 14.5 289289 16 49 35 42 10 299290 17 59 31 45 13 312291 18 61 29 45 13 325
292 19 59 36 47.5 15.5 340.5293 20 63 36 49.5 17.5 358294 21 64 38 51 19 377295 22 48 34 41 9 386
296 23 53 28 40.5 8.5 394.5297 24 57 24 40.5 8.5 403298 25 50 30 40 8 411299 26 42 25 33.5 1.5 412.5
300 27 45 22 33.5 1.5 414301 28 51 18 34.5 2.5 416.5302 29 56 22 39 7 423.5303 30 60 28 44 12 435.5304 31 60 34 47 15 450.5305 32 58 33 45.5 13.5 464306 33 53 25 39 7 471307 34 51 22 36.5 4.5 475.5308 35 51 26 38.5 6.5 482309 36 56 37 46.5 14.5 496.5310 37 59 31 45 13 509.5311 38 44 33 38.5 6.5 516312 39 50 30 40 8 524
313 40 52 25 38.5 6.5 530.5314 41 53 32 42.5 10.5 541315 42 54 25 39.5 7.5 548.5316 43 48 30 39 7 555.5
317 44 48 34 41 9 564.5318 45 46 25 35.5 3.5 568319 46 45 19 32 0 568320 47 47 20 33.5 1.5 569.5
321 48 53 21 37 5 574.5322 49 49 21 35 3 577.5323 50 47 19 33 1 578.5324 51 49 20 34.5 2.5 581
325 52 48 23 35.5 3.5 584.5326 53 53 27 40 8 592.5327 54 59 32 45.5 13.5 606328 55 58 29 43.5 11.5 617.5329 56 59 30 44.5 12.5 630330 57 50 35 42.5 10.5 640.5
0
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800
1000
1200
0 50 100 150 200 250
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day of frost year
Blanding, UT
1964-1965
331 58 45 33 39 7 647.5
332 59 46 31 38.5 6.5 654333 60 49 39 44 12 666334 61 46 26 36 4 670335 62 43 26 34.5 2.5 672.5
336 63 41 27 34 2 674.5337 64 45 22 33.5 1.5 676338 65 45 25 35 3 679339 66 49 24 36.5 4.5 683.5
340 67 49 23 36 4 687.5341 68 48 23 35.5 3.5 691342 69 54 29 41.5 9.5 700.5343 70 44 32 38 6 706.5344 71 38 21 29.5 -2.5 704345 72 39 17 28 -4 700346 73 43 16 29.5 -2.5 697.5347 74 41 16 28.5 -3.5 694348 75 41 22 31.5 -0.5 693.5349 76 37 18 27.5 -4.5 689350 77 36 15 25.5 -6.5 682.5351 78 44 19 31.5 -0.5 682352 79 34 11 22.5 -9.5 672.5
353 80 35 10 22.5 -9.5 663354 81 37 24 30.5 -1.5 661.5355 82 30 23 26.5 -5.5 656356 83 40 22 31 -1 655
357 84 37 8 22.5 -9.5 645.5358 85 34 8 21 -11 634.5359 86 34 10 22 -10 624.5360 87 44 7 25.5 -6.5 618
361 88 40 14 27 -5 613362 89 41 13 27 -5 608363 90 36 11 23.5 -8.5 599.5364 91 41 13 27 -5 594.5
365 92 38 14 26 -6 588.51 93 40 14 27 -5 583.52 94 34 19 26.5 -5.5 5783 95 22 1 11.5 -20.5 557.54 96 17 -8 4.5 -27.5 5305 97 19 -14 2.5 -29.5 500.56 98 19 -14 2.5 -29.5 4717 99 10 -13 -1.5 -33.5 437.58 100 19 -5 7 -25 412.59 101 20 3 11.5 -20.5 39210 102 36 10 23 -9 38311 103 42 17 29.5 -2.5 380.512 104 44 20 32 0 380.5
13 105 40 18 29 -3 377.514 106 39 16 27.5 -4.5 37315 107 43 15 29 -3 37016 108 45 23 34 2 372
17 109 52 22 37 5 37718 110 58 31 44.5 12.5 389.519 111 56 27 41.5 9.5 39920 112 51 32 41.5 9.5 408.5
21 113 52 29 40.5 8.5 41722 114 45 26 35.5 3.5 420.523 115 43 21 32 0 420.524 116 40 21 30.5 -1.5 419
25 117 48 21 34.5 2.5 421.526 118 53 27 40 8 429.527 119 56 28 42 10 439.528 120 54 29 41.5 9.5 44929 121 53 25 39 7 45630 122 60 29 44.5 12.5 468.531 123 61 33 47 15 483.532 124 52 31 41.5 9.5 49333 125 52 29 40.5 8.5 501.534 126 42 24 33 1 502.535 127 36 12 24 -8 494.536 128 44 17 30.5 -1.5 49337 129 40 23 31.5 -0.5 492.5
38 130 35 19 27 -5 487.539 131 45 14 29.5 -2.5 48540 132 52 18 35 3 48841 133 55 22 38.5 6.5 494.5
42 134 54 28 41 9 503.543 135 58 26 42 10 513.544 136 56 26 41 9 522.545 137 60 29 44.5 12.5 535
46 138 54 29 41.5 9.5 544.547 139 57 26 41.5 9.5 55448 140 58 35 46.5 14.5 568.549 141 46 26 36 4 572.5
50 142 40 19 29.5 -2.5 57051 143 38 26 32 0 57052 144 37 11 24 -8 56253 145 33 4 18.5 -13.5 548.554 146 36 11 23.5 -8.5 54055 147 41 12 26.5 -5.5 534.556 148 45 18 31.5 -0.5 53457 149 29 14 21.5 -10.5 523.558 150 31 6 18.5 -13.5 51059 151 28 9 18.5 -13.5 496.560 152 26 13 19.5 -12.5 48461 153 34 13 23.5 -8.5 475.562 154 40 11 25.5 -6.5 469
63 155 50 27 38.5 6.5 475.564 156 38 20 29 -3 472.565 157 38 12 25 -7 465.566 158 46 15 30.5 -1.5 464
67 159 48 21 34.5 2.5 466.568 160 52 21 36.5 4.5 47169 161 56 25 40.5 8.5 479.570 162 54 28 41 9 488.5
71 163 59 26 42.5 10.5 49972 164 54 30 42 10 50973 165 45 24 34.5 2.5 511.574 166 52 22 37 5 516.5
75 167 54 20 37 5 521.5
76 168 58 25 41.5 9.5 53177 169 38 20 29 -3 52878 170 52 15 33.5 1.5 529.579 171 57 23 40 8 537.5
80 172 64 27 45.5 13.5 55181 173 65 34 49.5 17.5 568.582 174 70 35 52.5 20.5 58983 175 62 44 53 21 610
84 176 66 33 49.5 17.5 627.585 177 74 40 57 25 652.586 178 68 39 53.5 21.5 67487 179 64 32 48 16 69088 180 68 27 47.5 15.5 705.589 181 72 33 52.5 20.5 72690 182 58 29 43.5 11.5 737.591 183 52 17 34.5 2.5 74092 184 60 24 42 10 75093 185 60 34 47 15 76594 186 56 32 44 12 77795 187 62 27 44.5 12.5 789.596 188 65 28 46.5 14.5 804
97 189 70 40 55 23 82798 190 65 37 51 19 84699 191 69 33 51 19 865100 192 72 38 55 23 888
101 193 74 36 55 23 911102 194 74 38 56 24 935103 195 75 38 56.5 24.5 959.5104 196 66 47 56.5 24.5 984
105 197 72 44 58 26 1010106 198 72 37 54.5 22.5 1032.5107 199 63 38 50.5 18.5 1051108 200 50 30 40 8 1059
109 201 50 29 39.5 7.5 1066.5110 202 63 33 48 16 1082.5111 203 56 33 44.5 12.5 1095112 204 59 34 46.5 14.5 1109.5113 205 55 32 43.5 11.5 1121114 206 63 36 49.5 17.5 1138.5115 207 67 36 51.5 19.5 1158116 208 49 27 38 6 1164117 209 59 23 41 9 1173118 210 65 33 49 17 1190119 211 65 35 50 18 1208120 212 71 34 52.5 20.5 1228.5121 213 75 40 57.5 25.5 1254
122 214 78 39 58.5 26.5 1280.5123 215 77 38 57.5 25.5 1306124 216 62 41 51.5 19.5 1325.5125 217 56 37 46.5 14.5 1340
126 218 62 39 50.5 18.5 1358.5127 219 56 36 46 14 1372.5128 220 57 38 47.5 15.5 1388129 221 64 34 49 17 1405
130 222 67 37 52 20 1425131 223 74 37 55.5 23.5 1448.5132 224 72 41 56.5 24.5 1473133 225 74 41 57.5 25.5 1498.5
134 226 76 45 60.5 28.5 1527135 227 80 47 63.5 31.5 1558.5136 228 79 45 62 30 1588.5137 229 57 38 47.5 15.5 1604138 230 59 35 47 15 1619139 231 65 30 47.5 15.5 1634.5140 232 75 35 55 23 1657.5141 233 77 39 58 26 1683.5142 234 63 39 51 19 1702.5143 235 62 32 47 15 1717.5144 236 78 39 58.5 26.5 1744145 237 79 40 59.5 27.5 1771.5146 238 81 42 61.5 29.5 1801
147 239 81 45 63 31 1832148 240 74 47 60.5 28.5 1860.5149 241 51 38 44.5 12.5 1873150 242 67 37 52 20 1893
151 243 72 36 54 22 1915152 244 75 38 56.5 24.5 1939.5153 245 76 41 58.5 26.5 1966154 246 73 36 54.5 22.5 1988.5
155 247 73 37 55 23 2011.5156 248 77 44 60.5 28.5 2040157 249 80 43 61.5 29.5 2069.5158 250 84 49 66.5 34.5 2104
159 251 79 53 66 34 2138160 252 83 45 64 32 2170161 253 81 46 63.5 31.5 2201.5162 254 81 50 65.5 33.5 2235163 255 73 48 60.5 28.5 2263.5164 256 82 47 64.5 32.5 2296165 257 89 55 72 40 2336166 258 91 56 73.5 41.5 2377.5167 259 93 55 74 42 2419.5168 260 91 56 73.5 41.5 2461169 261 92 58 75 43 2504170 262 89 52 70.5 38.5 2542.5171 263 92 50 71 39 2581.5
172 264 93 57 75 43 2624.5173 265 97 61 79 47 2671.5174 266 97 58 77.5 45.5 2717175 267 96 59 77.5 45.5 2762.5
176 268 95 56 75.5 43.5 2806177 269 93 58 75.5 43.5 2849.5178 270 88 55 71.5 39.5 2889179 271 86 50 68 36 2925
180 272 85 55 70 38 2963181 273 89 53 71 39 3002182 274 90 58 74 42 3044183 275 87 59 73 41 3085
184 276 87 53 70 38 3123
185 277 88 53 70.5 38.5 3161.5186 278 91 51 71 39 3200.5187 279 82 55 68.5 36.5 3237188 280 81 55 68 36 3273
189 281 89 52 70.5 38.5 3311.5190 282 91 51 71 39 3350.5191 283 93 57 75 43 3393.5192 284 94 54 74 42 3435.5
193 285 98 58 78 46 3481.5194 286 101 58 79.5 47.5 3529195 287 99 70 84.5 52.5 3581.5196 288 97 65 81 49 3630.5197 289 98 64 81 49 3679.5198 290 98 63 80.5 48.5 3728199 291 97 65 81 49 3777200 292 91 62 76.5 44.5 3821.5201 293 89 62 75.5 43.5 3865202 294 83 60 71.5 39.5 3904.5203 295 86 61 73.5 41.5 3946204 296 90 53 71.5 39.5 3985.5205 297 90 54 72 40 4025.5
206 298 92 56 74 42 4067.5207 299 91 58 74.5 42.5 4110208 300 92 62 77 45 4155209 301 92 59 75.5 43.5 4198.5
210 302 95 63 79 47 4245.5211 303 92 63 77.5 45.5 4291212 304 90 60 75 43 4334213 305 88 57 72.5 40.5 4374.5
214 306 92 54 73 41 4415.5215 307 92 58 75 43 4458.5216 308 91 57 74 42 4500.5217 309 87 57 72 40 4540.5
218 310 86 53 69.5 37.5 4578219 311 87 52 69.5 37.5 4615.5220 312 91 52 71.5 39.5 4655221 313 90 59 74.5 42.5 4697.5222 314 92 60 76 44 4741.5223 315 90 58 74 42 4783.5224 316 92 56 74 42 4825.5225 317 93 56 74.5 42.5 4868226 318 92 56 74 42 4910227 319 89 56 72.5 40.5 4950.5228 320 90 60 75 43 4993.5229 321 92 56 74 42 5035.5230 322 87 59 73 41 5076.5
231 323 89 59 74 42 5118.5232 324 79 57 68 36 5154.5233 325 84 56 70 38 5192.5234 326 81 54 67.5 35.5 5228
235 327 84 57 70.5 38.5 5266.5236 328 86 55 70.5 38.5 5305237 329 84 57 70.5 38.5 5343.5238 330 83 57 70 38 5381.5
239 331 87 61 74 42 5423.5240 332 82 55 68.5 36.5 5460241 333 84 54 69 37 5497242 334 86 52 69 37 5534
243 335 81 50 65.5 33.5 5567.5244 336 85 54 69.5 37.5 5605245 337 83 55 69 37 5642246 338 79 50 64.5 32.5 5674.5247 339 71 38 54.5 22.5 5697248 340 79 39 59 27 5724249 341 86 48 67 35 5759250 342 85 57 71 39 5798251 343 81 45 63 31 5829252 344 84 46 65 33 5862253 345 88 55 71.5 39.5 5901.5254 346 89 49 69 37 5938.5255 347 93 50 71.5 39.5 5978
256 348 89 57 73 41 6019257 349 87 50 68.5 36.5 6055.5258 350 79 47 63 31 6086.5259 351 81 45 63 31 6117.5
260 352 67 33 50 18 6135.5261 353 59 23 41 9 6144.5262 354 65 34 49.5 17.5 6162263 355 69 32 50.5 18.5 6180.5
264 356 70 41 55.5 23.5 6204265 357 67 37 52 20 6224266 358 70 39 54.5 22.5 6246.5267 359 71 38 54.5 22.5 6269
268 360 76 41 58.5 26.5 6295.5269 361 75 41 58 26 6321.5270 362 74 40 57 25 6346.5271 363 72 38 55 23 6369.5 70 706.5 length of freeze (day) 38
272 364 62 42 52 20 6389.5 108 372 frost index (oF-day)334.5273 365 66 42 54 22 6411.5 average temperature 49.6
1971-1972 day of frost year degree cumulative
day of year (consecutive date) max. temp. min. temp avg. temp day (
oF) degree day (
oF)274 1 52 31 41.5 9.5 9.5
275 2 55 30 42.5 10.5 20276 3 61 30 45.5 13.5 33.5277 4 68 34 51 19 52.5278 5 72 38 55 23 75.5
279 6 73 40 56.5 24.5 100280 7 74 40 57 25 125281 8 75 43 59 27 152282 9 75 50 62.5 30.5 182.5
283 10 77 43 60 28 210.5284 11 76 41 58.5 26.5 237285 12 77 44 60.5 28.5 265.5286 13 73 40 56.5 24.5 290287 14 73 38 55.5 23.5 313.5288 15 72 42 57 25 338.5
0
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300
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500
600
700
800
0 50 100 150 200
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day of frost year
Blanding, UT
1970-1971
289 16 57 40 48.5 16.5 355
290 17 43 34 38.5 6.5 361.5291 18 42 28 35 3 364.5292 19 54 26 40 8 372.5293 20 56 27 41.5 9.5 382
294 21 60 35 47.5 15.5 397.5295 22 64 32 48 16 413.5296 23 62 35 48.5 16.5 430297 24 57 43 50 18 448
298 25 54 39 46.5 14.5 462.5299 26 46 34 40 8 470.5300 27 53 31 42 10 480.5301 28 54 37 45.5 13.5 494302 29 42 20 31 -1 493303 30 34 10 22 -10 483304 31 44 23 33.5 1.5 484.5305 32 44 22 33 1 485.5306 33 51 21 36 4 489.5307 34 53 22 37.5 5.5 495308 35 55 25 40 8 503309 36 58 26 42 10 513310 37 57 24 40.5 8.5 521.5
311 38 55 26 40.5 8.5 530312 39 57 25 41 9 539313 40 55 28 41.5 9.5 548.5314 41 62 29 45.5 13.5 562
315 42 64 30 47 15 577316 43 58 35 46.5 14.5 591.5317 44 49 30 39.5 7.5 599318 45 52 24 38 6 605
319 46 44 30 37 5 610320 47 42 27 34.5 2.5 612.5321 48 39 25 32 0 612.5322 49 36 17 26.5 -5.5 607
323 50 39 13 26 -6 601324 51 42 20 31 -1 600325 52 37 24 30.5 -1.5 598.5326 53 41 23 32 0 598.5327 54 48 22 35 3 601.5328 55 46 22 34 2 603.5329 56 47 24 35.5 3.5 607330 57 49 26 37.5 5.5 612.5331 58 41 27 34 2 614.5332 59 37 21 29 -3 611.5333 60 44 20 32 0 611.5334 61 37 24 30.5 -1.5 610335 62 42 23 32.5 0.5 610.5
336 63 32 27 29.5 -2.5 608337 64 38 14 26 -6 602338 65 35 12 23.5 -8.5 593.5339 66 34 9 21.5 -10.5 583
340 67 35 15 25 -7 576341 68 31 22 26.5 -5.5 570.5342 69 37 7 22 -10 560.5343 70 29 2 15.5 -16.5 544
344 71 34 5 19.5 -12.5 531.5345 72 35 7 21 -11 520.5346 73 31 2 16.5 -15.5 505347 74 30 17 23.5 -8.5 496.5
348 75 32 5 18.5 -13.5 483349 76 25 5 15 -17 466350 77 30 0 15 -17 449351 78 28 1 14.5 -17.5 431.5352 79 30 3 16.5 -15.5 416353 80 34 9 21.5 -10.5 405.5354 81 34 3 18.5 -13.5 392355 82 40 7 23.5 -8.5 383.5356 83 40 22 31 -1 382.5357 84 50 32 41 9 391.5358 85 49 34 41.5 9.5 401359 86 47 35 41 9 410360 87 46 33 39.5 7.5 417.5
361 88 40 21 30.5 -1.5 416362 89 41 25 33 1 417363 90 38 25 31.5 -0.5 416.5364 91 36 19 27.5 -4.5 412
365 92 38 15 26.5 -5.5 406.51 93 39 16 27.5 -4.5 4022 94 39 18 28.5 -3.5 398.53 95 26 10 18 -14 384.5
4 96 24 2 13 -19 365.55 97 31 7 19 -13 352.56 98 37 13 25 -7 345.57 99 38 15 26.5 -5.5 340
8 100 41 19 30 -2 3389 101 40 15 27.5 -4.5 333.510 102 40 15 27.5 -4.5 32911 103 40 19 29.5 -2.5 326.512 104 44 22 33 1 327.513 105 44 22 33 1 328.514 106 40 17 28.5 -3.5 32515 107 43 15 29 -3 32216 108 45 18 31.5 -0.5 321.517 109 44 17 30.5 -1.5 32018 110 47 20 33.5 1.5 321.519 111 49 24 36.5 4.5 32620 112 50 25 37.5 5.5 331.5
21 113 47 24 35.5 3.5 33522 114 45 23 34 2 33723 115 52 28 40 8 34524 116 40 22 31 -1 344
25 117 43 20 31.5 -0.5 343.526 118 52 25 38.5 6.5 35027 119 37 23 30 -2 34828 120 42 15 28.5 -3.5 344.5
29 121 34 18 26 -6 338.530 122 37 10 23.5 -8.5 33031 123 37 10 23.5 -8.5 321.532 124 40 11 25.5 -6.5 315
33 125 28 9 18.5 -13.5 301.5
34 126 39 5 22 -10 291.535 127 44 12 28 -4 287.536 128 43 21 32 0 287.537 129 45 20 32.5 0.5 288
38 130 47 19 33 1 28939 131 50 20 35 3 29240 132 50 24 37 5 29741 133 41 15 28 -4 293
42 134 46 11 28.5 -3.5 289.543 135 51 16 33.5 1.5 29144 136 50 19 34.5 2.5 293.545 137 51 23 37 5 298.546 138 47 25 36 4 302.547 139 55 27 41 9 311.548 140 57 29 43 11 322.549 141 57 26 41.5 9.5 33250 142 63 29 46 14 34651 143 62 30 46 14 36052 144 58 28 43 11 37153 145 60 33 46.5 14.5 385.554 146 59 29 44 12 397.5
55 147 57 25 41 9 406.556 148 57 25 41 9 415.557 149 57 27 42 10 425.558 150 60 28 44 12 437.5
59 151 63 27 45 13 450.560 152 62 34 48 16 466.561 153 47 26 36.5 4.5 47162 154 55 20 37.5 5.5 476.5
63 155 64 30 47 15 491.564 156 66 31 48.5 16.5 50865 157 68 34 51 19 52766 158 70 31 50.5 18.5 545.5
67 159 70 35 52.5 20.5 56668 160 70 33 51.5 19.5 585.569 161 71 33 52 20 605.570 162 72 35 53.5 21.5 62771 163 70 35 52.5 20.5 647.572 164 71 36 53.5 21.5 66973 165 71 33 52 20 68974 166 65 36 50.5 18.5 707.575 167 60 28 44 12 719.576 168 68 30 49 17 736.577 169 71 35 53 21 757.578 170 71 36 53.5 21.5 77979 171 59 35 47 15 794
80 172 62 29 45.5 13.5 807.581 173 66 30 48 16 823.582 174 69 32 50.5 18.5 84283 175 59 41 50 18 860
84 176 62 30 46 14 87485 177 69 31 50 18 89286 178 62 35 48.5 16.5 908.587 179 47 30 38.5 6.5 915
88 180 44 23 33.5 1.5 916.589 181 47 17 32 0 916.590 182 46 21 33.5 1.5 91891 183 55 25 40 8 926
92 184 65 29 47 15 94193 185 67 40 53.5 21.5 962.594 186 66 30 48 16 978.595 187 69 35 52 20 998.596 188 70 41 55.5 23.5 102297 189 71 40 55.5 23.5 1045.598 190 71 33 52 20 1065.599 191 72 34 53 21 1086.5100 192 72 38 55 23 1109.5101 193 73 37 55 23 1132.5102 194 73 40 56.5 24.5 1157103 195 64 40 52 20 1177104 196 55 31 43 11 1188
105 197 42 25 33.5 1.5 1189.5106 198 60 24 42 10 1199.5107 199 67 30 48.5 16.5 1216108 200 67 32 49.5 17.5 1233.5
109 201 65 40 52.5 20.5 1254110 202 55 31 43 11 1265111 203 55 24 39.5 7.5 1272.5112 204 65 24 44.5 12.5 1285
113 205 71 30 50.5 18.5 1303.5114 206 74 32 53 21 1324.5115 207 78 36 57 25 1349.5116 208 65 35 50 18 1367.5
117 209 56 30 43 11 1378.5118 210 63 32 47.5 15.5 1394119 211 70 30 50 18 1412120 212 73 36 54.5 22.5 1434.5121 213 65 36 50.5 18.5 1453122 214 67 28 47.5 15.5 1468.5123 215 70 32 51 19 1487.5124 216 76 33 54.5 22.5 1510125 217 79 39 59 27 1537126 218 77 46 61.5 29.5 1566.5127 219 74 44 59 27 1593.5128 220 70 40 55 23 1616.5129 221 74 35 54.5 22.5 1639
130 222 73 39 56 24 1663131 223 67 38 52.5 20.5 1683.5132 224 65 29 47 15 1698.5133 225 67 33 50 18 1716.5
134 226 66 36 51 19 1735.5135 227 75 45 60 28 1763.5136 228 81 40 60.5 28.5 1792137 229 83 42 62.5 30.5 1822.5
138 230 78 52 65 33 1855.5139 231 80 45 62.5 30.5 1886140 232 78 49 63.5 31.5 1917.5141 233 78 37 57.5 25.5 1943
142 234 70 35 52.5 20.5 1963.5
143 235 71 33 52 20 1983.5144 236 78 36 57 25 2008.5145 237 80 40 60 28 2036.5146 238 80 40 60 28 2064.5
147 239 81 42 61.5 29.5 2094148 240 82 45 63.5 31.5 2125.5149 241 83 46 64.5 32.5 2158150 242 85 56 70.5 38.5 2196.5
151 243 78 52 65 33 2229.5152 244 82 45 63.5 31.5 2261153 245 87 50 68.5 36.5 2297.5154 246 88 50 69 37 2334.5155 247 83 49 66 34 2368.5156 248 82 51 66.5 34.5 2403157 249 80 45 62.5 30.5 2433.5158 250 79 50 64.5 32.5 2466159 251 78 50 64 32 2498160 252 76 47 61.5 29.5 2527.5161 253 81 46 63.5 31.5 2559162 254 82 47 64.5 32.5 2591.5163 255 86 48 67 35 2626.5
164 256 87 56 71.5 39.5 2666165 257 85 48 66.5 34.5 2700.5166 258 85 50 67.5 35.5 2736167 259 87 48 67.5 35.5 2771.5
168 260 86 48 67 35 2806.5169 261 89 52 70.5 38.5 2845170 262 87 50 68.5 36.5 2881.5171 263 89 48 68.5 36.5 2918
172 264 89 48 68.5 36.5 2954.5173 265 87 57 72 40 2994.5174 266 68 50 59 27 3021.5175 267 78 52 65 33 3054.5
176 268 80 44 62 30 3084.5177 269 82 46 64 32 3116.5178 270 82 48 65 33 3149.5179 271 88 47 67.5 35.5 3185180 272 89 55 72 40 3225181 273 92 64 78 46 3271182 274 92 55 73.5 41.5 3312.5183 275 96 58 77 45 3357.5184 276 95 64 79.5 47.5 3405185 277 93 55 74 42 3447186 278 89 56 72.5 40.5 3487.5187 279 90 58 74 42 3529.5188 280 90 54 72 40 3569.5
189 281 90 52 71 39 3608.5190 282 90 53 71.5 39.5 3648191 283 88 58 73 41 3689192 284 90 55 72.5 40.5 3729.5
193 285 90 53 71.5 39.5 3769194 286 94 64 79 47 3816195 287 93 61 77 45 3861196 288 95 62 78.5 46.5 3907.5
197 289 97 61 79 47 3954.5198 290 94 58 76 44 3998.5199 291 92 51 71.5 39.5 4038200 292 87 51 69 37 4075
201 293 84 49 66.5 34.5 4109.5202 294 83 55 69 37 4146.5203 295 82 53 67.5 35.5 4182204 296 85 54 69.5 37.5 4219.5205 297 92 50 71 39 4258.5206 298 84 60 72 40 4298.5207 299 82 58 70 38 4336.5208 300 88 57 72.5 40.5 4377209 301 91 64 77.5 45.5 4422.5210 302 92 60 76 44 4466.5211 303 94 60 77 45 4511.5212 304 97 59 78 46 4557.5213 305 95 64 79.5 47.5 4605
214 306 91 61 76 44 4649215 307 92 63 77.5 45.5 4694.5216 308 92 65 78.5 46.5 4741217 309 90 64 77 45 4786
218 310 86 59 72.5 40.5 4826.5219 311 93 57 75 43 4869.5220 312 93 59 76 44 4913.5221 313 91 56 73.5 41.5 4955
222 314 90 55 72.5 40.5 4995.5223 315 90 56 73 41 5036.5224 316 95 60 77.5 45.5 5082225 317 92 60 76 44 5126
226 318 90 60 75 43 5169227 319 85 60 72.5 40.5 5209.5228 320 85 58 71.5 39.5 5249229 321 87 55 71 39 5288230 322 86 55 70.5 38.5 5326.5231 323 75 58 66.5 34.5 5361232 324 80 52 66 34 5395233 325 83 48 65.5 33.5 5428.5234 326 91 53 72 40 5468.5235 327 87 57 72 40 5508.5236 328 88 51 69.5 37.5 5546237 329 81 45 63 31 5577238 330 74 56 65 33 5610
239 331 72 48 60 28 5638240 332 72 51 61.5 29.5 5667.5241 333 78 59 68.5 36.5 5704242 334 73 57 65 33 5737
243 335 80 50 65 33 5770244 336 84 53 68.5 36.5 5806.5245 337 84 50 67 35 5841.5246 338 84 52 68 36 5877.5
247 339 82 51 66.5 34.5 5912248 340 84 50 67 35 5947249 341 85 52 68.5 36.5 5983.5250 342 70 50 60 28 6011.5 600
700
Blanding, UT
251 343 72 49 60.5 28.5 6040
252 344 82 46 64 32 6072253 345 79 57 68 36 6108254 346 79 55 67 35 6143255 347 80 53 66.5 34.5 6177.5
256 348 78 48 63 31 6208.5257 349 76 49 62.5 30.5 6239258 350 81 49 65 33 6272259 351 83 48 65.5 33.5 6305.5
260 352 83 50 66.5 34.5 6340261 353 83 48 65.5 33.5 6373.5262 354 80 50 65 33 6406.5263 355 73 43 58 26 6432.5264 356 71 39 55 23 6455.5265 357 74 42 58 26 6481.5266 358 74 45 59.5 27.5 6509267 359 76 45 60.5 28.5 6537.5268 360 68 43 55.5 23.5 6561269 361 71 44 57.5 25.5 6586.5270 362 74 43 58.5 26.5 6613271 363 75 40 57.5 25.5 6638.5272 364 75 44 59.5 27.5 6666 58 614.5 length of freeze (day) 70273 365 70 45 57.5 25.5 6691.5 128 287.5 frost index (oF-day)327274 366 76 40 58 26 6717.5 average temperature 50.4
1972-1973
day of frost year degree cumulative
day of year (consecutive date) max. temp. min. temp avg. temp day (
oF) degree day (
oF)274 1 79 40 59.5 27.5 27.5275 2 76 45 60.5 28.5 56276 3 81 46 63.5 31.5 87.5277 4 56 48 52 20 107.5278 5 63 47 55 23 130.5279 6 61 47 54 22 152.5280 7 57 48 52.5 20.5 173281 8 65 47 56 24 197282 9 65 44 54.5 22.5 219.5283 10 66 47 56.5 24.5 244284 11 67 43 55 23 267285 12 70 48 59 27 294
286 13 70 50 60 28 322287 14 70 48 59 27 349288 15 65 47 56 24 373289 16 62 45 53.5 21.5 394.5
290 17 55 45 50 18 412.5291 18 53 45 49 17 429.5292 19 52 46 49 17 446.5293 20 54 38 46 14 460.5
294 21 54 33 43.5 11.5 472295 22 59 33 46 14 486296 23 58 35 46.5 14.5 500.5297 24 56 35 45.5 13.5 514
298 25 55 37 46 14 528299 26 50 37 43.5 11.5 539.5300 27 45 40 42.5 10.5 550301 28 50 38 44 12 562302 29 48 30 39 7 569303 30 34 24 29 -3 566304 31 36 22 29 -3 563305 32 42 33 37.5 5.5 568.5306 33 51 28 39.5 7.5 576307 34 52 27 39.5 7.5 583.5308 35 52 30 41 9 592.5309 36 49 35 42 10 602.5310 37 52 27 39.5 7.5 610
311 38 51 30 40.5 8.5 618.5312 39 53 37 45 13 631.5313 40 52 30 41 9 640.5314 41 47 25 36 4 644.5
315 42 44 32 38 6 650.5316 43 37 24 30.5 -1.5 649317 44 45 21 33 1 650318 45 43 28 35.5 3.5 653.5
319 46 43 27 35 3 656.5320 47 43 26 34.5 2.5 659321 48 37 31 34 2 661322 49 45 27 36 4 665
323 50 45 26 35.5 3.5 668.5324 51 40 25 32.5 0.5 669325 52 40 21 30.5 -1.5 667.5326 53 37 21 29 -3 664.5327 54 42 19 30.5 -1.5 663328 55 43 19 31 -1 662329 56 41 21 31 -1 661330 57 45 22 33.5 1.5 662.5331 58 42 21 31.5 -0.5 662332 59 32 16 24 -8 654333 60 38 15 26.5 -5.5 648.5334 61 46 20 33 1 649.5335 62 48 22 35 3 652.5
336 63 45 20 32.5 0.5 653337 64 45 23 34 2 655338 65 38 25 31.5 -0.5 654.5339 66 25 6 15.5 -16.5 638
340 67 25 6 15.5 -16.5 621.5341 68 36 15 25.5 -6.5 615342 69 34 22 28 -4 611343 70 27 3 15 -17 594
344 71 31 2 16.5 -15.5 578.5345 72 29 13 21 -11 567.5346 73 28 1 14.5 -17.5 550347 74 37 13 25 -7 543
348 75 32 6 19 -13 530349 76 31 6 18.5 -13.5 516.5350 77 35 10 22.5 -9.5 507351 78 34 11 22.5 -9.5 497.5352 79 40 21 30.5 -1.5 496353 80 34 17 25.5 -6.5 489.5
0
100
200
300
400
500
0 50 100 150 200
fr
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i
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d
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day of frost year
1971-1972
354 81 44 17 30.5 -1.5 488
355 82 41 20 30.5 -1.5 486.5356 83 38 15 26.5 -5.5 481357 84 45 22 33.5 1.5 482.5358 85 42 22 32 0 482.5
359 86 40 20 30 -2 480.5360 87 38 18 28 -4 476.5361 88 40 17 28.5 -3.5 473362 89 35 22 28.5 -3.5 469.5
363 90 32 22 27 -5 464.5364 91 28 5 16.5 -15.5 449365 92 29 2 15.5 -16.5 432.51 93 30 5 17.5 -14.5 4182 94 33 5 19 -13 4053 95 25 6 15.5 -16.5 388.54 96 34 21 27.5 -4.5 3845 97 29 4 16.5 -15.5 368.56 98 34 2 18 -14 354.57 99 27 -4 11.5 -20.5 3348 100 29 6 17.5 -14.5 319.59 101 30 20 25 -7 312.510 102 32 10 21 -11 301.5
11 103 21 3 12 -20 281.512 104 24 1 12.5 -19.5 26213 105 25 5 15 -17 24514 106 25 3 14 -18 227
15 107 30 2 16 -16 21116 108 39 6 22.5 -9.5 201.517 109 39 17 28 -4 197.518 110 37 13 25 -7 190.5
19 111 34 22 28 -4 186.520 112 35 9 22 -10 176.521 113 36 5 20.5 -11.5 16522 114 35 9 22 -10 155
23 115 28 2 15 -17 13824 116 29 3 16 -16 12225 117 31 4 17.5 -14.5 107.526 118 35 13 24 -8 99.527 119 34 13 23.5 -8.5 9128 120 33 5 19 -13 7829 121 37 8 22.5 -9.5 68.530 122 42 12 27 -5 63.531 123 36 17 26.5 -5.5 5832 124 39 13 26 -6 5233 125 34 8 21 -11 4134 126 37 15 26 -6 3535 127 42 29 35.5 3.5 38.5
36 128 43 18 30.5 -1.5 3737 129 36 26 31 -1 3638 130 45 26 35.5 3.5 39.539 131 39 24 31.5 -0.5 39
40 132 31 20 25.5 -6.5 32.541 133 32 20 26 -6 26.542 134 39 23 31 -1 25.543 135 41 26 33.5 1.5 27
44 136 44 17 30.5 -1.5 25.545 137 38 15 26.5 -5.5 2046 138 39 22 30.5 -1.5 18.547 139 42 23 32.5 0.5 19
48 140 41 16 28.5 -3.5 15.549 141 39 16 27.5 -4.5 1150 142 40 15 27.5 -4.5 6.551 143 41 16 28.5 -3.5 352 144 38 20 29 -3 053 145 38 30 34 2 254 146 37 30 33.5 1.5 3.555 147 42 30 36 4 7.556 148 48 28 38 6 13.557 149 49 25 37 5 18.558 150 52 30 41 9 27.559 151 47 34 40.5 8.5 3660 152 48 32 40 8 44
61 153 48 35 41.5 9.5 53.562 154 49 29 39 7 60.563 155 41 28 34.5 2.5 6364 156 43 25 34 2 65
65 157 41 20 30.5 -1.5 63.566 158 35 30 32.5 0.5 6467 159 40 30 35 3 6768 160 39 28 33.5 1.5 68.5
69 161 49 28 38.5 6.5 7570 162 42 27 34.5 2.5 77.571 163 46 30 38 6 83.572 164 40 27 33.5 1.5 85
73 165 41 23 32 0 8574 166 49 25 37 5 9075 167 54 24 39 7 9776 168 54 28 41 9 10677 169 53 31 42 10 11678 170 52 27 39.5 7.5 123.579 171 53 29 41 9 132.580 172 38 27 32.5 0.5 13381 173 36 25 30.5 -1.5 131.582 174 48 25 36.5 4.5 13683 175 47 29 38 6 14284 176 51 22 36.5 4.5 146.585 177 52 25 38.5 6.5 153
86 178 47 33 40 8 16187 179 44 30 37 5 16688 180 46 29 37.5 5.5 171.589 181 48 27 37.5 5.5 177
90 182 52 28 40 8 18591 183 49 28 38.5 6.5 191.592 184 50 31 40.5 8.5 20093 185 47 26 36.5 4.5 204.5
94 186 46 27 36.5 4.5 20995 187 56 24 40 8 21796 188 62 28 45 13 23097 189 45 24 34.5 2.5 232.5
98 190 43 20 31.5 -0.5 232
99 191 55 22 38.5 6.5 238.5100 192 62 30 46 14 252.5101 193 58 36 47 15 267.5102 194 61 30 45.5 13.5 281
103 195 66 38 52 20 301104 196 59 35 47 15 316105 197 51 31 41 9 325106 198 58 30 44 12 337
107 199 60 30 45 13 350108 200 51 30 40.5 8.5 358.5109 201 43 26 34.5 2.5 361110 202 47 19 33 1 362111 203 47 22 34.5 2.5 364.5112 204 59 25 42 10 374.5113 205 65 30 47.5 15.5 390114 206 60 35 47.5 15.5 405.5115 207 62 36 49 17 422.5116 208 63 32 47.5 15.5 438117 209 68 32 50 18 456118 210 71 38 54.5 22.5 478.5119 211 68 38 53 21 499.5
120 212 54 38 46 14 513.5121 213 53 36 44.5 12.5 526122 214 60 30 45 13 539123 215 68 33 50.5 18.5 557.5
124 216 71 39 55 23 580.5125 217 53 35 44 12 592.5126 218 59 32 45.5 13.5 606127 219 66 36 51 19 625
128 220 72 39 55.5 23.5 648.5129 221 76 45 60.5 28.5 677130 222 80 44 62 30 707131 223 80 48 64 32 739
132 224 80 47 63.5 31.5 770.5133 225 71 43 57 25 795.5134 226 69 44 56.5 24.5 820135 227 70 40 55 23 843136 228 78 43 60.5 28.5 871.5137 229 80 45 62.5 30.5 902138 230 84 50 67 35 937139 231 80 49 64.5 32.5 969.5140 232 80 51 65.5 33.5 1003141 233 70 43 56.5 24.5 1027.5142 234 65 40 52.5 20.5 1048143 235 72 39 55.5 23.5 1071.5144 236 78 42 60 28 1099.5
145 237 68 45 56.5 24.5 1124146 238 60 41 50.5 18.5 1142.5147 239 62 35 48.5 16.5 1159148 240 74 40 57 25 1184
149 241 78 43 60.5 28.5 1212.5150 242 76 48 62 30 1242.5151 243 79 48 63.5 31.5 1274152 244 69 49 59 27 1301
153 245 67 46 56.5 24.5 1325.5154 246 63 40 51.5 19.5 1345155 247 65 39 52 20 1365156 248 72 39 55.5 23.5 1388.5
157 249 80 47 63.5 31.5 1420158 250 85 46 65.5 33.5 1453.5159 251 87 50 68.5 36.5 1490160 252 89 52 70.5 38.5 1528.5161 253 89 53 71 39 1567.5162 254 85 47 66 34 1601.5163 255 85 50 67.5 35.5 1637164 256 78 50 64 32 1669165 257 63 47 55 23 1692166 258 69 45 57 25 1717167 259 70 37 53.5 21.5 1738.5168 260 77 42 59.5 27.5 1766169 261 69 46 57.5 25.5 1791.5
170 262 72 41 56.5 24.5 1816171 263 79 45 62 30 1846172 264 83 52 67.5 35.5 1881.5173 265 85 48 66.5 34.5 1916
174 266 85 47 66 34 1950175 267 87 53 70 38 1988176 268 91 52 71.5 39.5 2027.5177 269 93 58 75.5 43.5 2071
178 270 94 63 78.5 46.5 2117.5179 271 95 65 80 48 2165.5180 272 92 56 74 42 2207.5181 273 92 63 77.5 45.5 2253
182 274 91 52 71.5 39.5 2292.5183 275 92 52 72 40 2332.5184 276 95 57 76 44 2376.5185 277 94 57 75.5 43.5 2420186 278 96 62 79 47 2467187 279 96 56 76 44 2511188 280 92 65 78.5 46.5 2557.5189 281 86 62 74 42 2599.5190 282 92 56 74 42 2641.5191 283 91 57 74 42 2683.5192 284 87 61 74 42 2725.5193 285 87 60 73.5 41.5 2767194 286 83 53 68 36 2803
195 287 84 53 68.5 36.5 2839.5196 288 82 56 69 37 2876.5197 289 85 60 72.5 40.5 2917198 290 79 58 68.5 36.5 2953.5
199 291 75 55 65 33 2986.5200 292 80 51 65.5 33.5 3020201 293 83 51 67 35 3055202 294 81 54 67.5 35.5 3090.5
203 295 82 51 66.5 34.5 3125204 296 84 52 68 36 3161205 297 88 52 70 38 3199206 298 87 60 73.5 41.5 3240.5
207 299 87 57 72 40 3280.5
208 300 87 52 69.5 37.5 3318209 301 87 52 69.5 37.5 3355.5210 302 87 50 68.5 36.5 3392211 303 86 57 71.5 39.5 3431.5
212 304 85 52 68.5 36.5 3468213 305 88 52 70 38 3506214 306 88 57 72.5 40.5 3546.5215 307 89 56 72.5 40.5 3587
216 308 86 58 72 40 3627217 309 84 54 69 37 3664218 310 85 53 69 37 3701219 311 80 54 67 35 3736220 312 89 51 70 38 3774221 313 92 60 76 44 3818222 314 92 56 74 42 3860223 315 92 58 75 43 3903224 316 94 56 75 43 3946225 317 92 56 74 42 3988226 318 90 58 74 42 4030227 319 88 54 71 39 4069228 320 88 53 70.5 38.5 4107.5
229 321 86 58 72 40 4147.5230 322 85 56 70.5 38.5 4186231 323 90 57 73.5 41.5 4227.5232 324 88 60 74 42 4269.5
233 325 76 56 66 34 4303.5234 326 84 51 67.5 35.5 4339235 327 87 53 70 38 4377236 328 86 60 73 41 4418
237 329 87 53 70 38 4456238 330 83 51 67 35 4491239 331 84 53 68.5 36.5 4527.5240 332 84 50 67 35 4562.5
241 333 82 53 67.5 35.5 4598242 334 70 53 61.5 29.5 4627.5243 335 78 47 62.5 30.5 4658244 336 80 49 64.5 32.5 4690.5245 337 73 42 57.5 25.5 4716246 338 77 40 58.5 26.5 4742.5247 339 84 43 63.5 31.5 4774248 340 84 49 66.5 34.5 4808.5249 341 83 57 70 38 4846.5250 342 84 50 67 35 4881.5251 343 80 48 64 32 4913.5252 344 83 43 63 31 4944.5253 345 64 50 57 25 4969.5
254 346 68 45 56.5 24.5 4994255 347 76 42 59 27 5021256 348 80 45 62.5 30.5 5051.5257 349 80 49 64.5 32.5 5084
258 350 79 49 64 32 5116259 351 79 45 62 30 5146260 352 80 42 61 29 5175261 353 80 47 63.5 31.5 5206.5
262 354 78 45 61.5 29.5 5236263 355 79 43 61 29 5265264 356 80 45 62.5 30.5 5295.5265 357 80 46 63 31 5326.5
266 358 71 48 59.5 27.5 5354267 359 68 35 51.5 19.5 5373.5268 360 56 42 49 17 5390.5269 361 62 42 52 20 5410.5270 362 68 40 54 22 5432.5 52 667.5 length of freeze (day) 92271 363 74 40 57 25 5457.5 144 0 frost index (oF-day)667.5272 364 73 44 58.5 26.5 5484 average temperature 47.1273 365 77 44 60.5 28.5 5512.5
1961-1962
day of frost year degree cumulative
day of year (consecutive date) max. temp. min. temp avg. temp day (
oF) degree day (
oF)274 1 66 37 51.5 19.5 19.5275 2 70 36 53 21 40.5276 3 70 32 51 19 59.5
277 4 72 35 53.5 21.5 81278 5 73 36 54.5 22.5 103.5279 6 75 38 56.5 24.5 128280 7 74 41 57.5 25.5 153.5
281 8 60 43 51.5 19.5 173282 9 49 34 41.5 9.5 182.5283 10 55 31 43 11 193.5284 11 61 33 47 15 208.5285 12 65 37 51 19 227.5286 13 69 41 55 23 250.5287 14 70 44 57 25 275.5288 15 71 43 57 25 300.5289 16 72 40 56 24 324.5290 17 71 40 55.5 23.5 348291 18 74 43 58.5 26.5 374.5292 19 71 40 55.5 23.5 398293 20 68 40 54 22 420
294 21 66 41 53.5 21.5 441.5295 22 61 35 48 16 457.5296 23 58 27 42.5 10.5 468297 24 64 30 47 15 483
298 25 64 33 48.5 16.5 499.5299 26 62 35 48.5 16.5 516300 27 61 39 50 18 534301 28 48 30 39 7 541
302 29 35 28 31.5 -0.5 540.5303 30 46 29 37.5 5.5 546304 31 44 34 39 7 553305 32 40 32 36 4 557
306 33 38 28 33 1 558307 34 45 22 33.5 1.5 559.5308 35 54 26 40 8 567.5309 36 44 23 33.5 1.5 569310 37 48 20 34 2 571311 38 57 25 41 9 580
0
100
200
300
400
500
600
700
800
0 50 100 150 200 250
fr
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day of frost year
Blanding, UT
1972-1973
312 39 47 34 40.5 8.5 588.5
313 40 53 35 44 12 600.5314 41 57 30 43.5 11.5 612315 42 53 32 42.5 10.5 622.5316 43 44 29 36.5 4.5 627
317 44 43 27 35 3 630318 45 47 19 33 1 631319 46 54 21 37.5 5.5 636.5320 47 52 28 40 8 644.5
321 48 40 22 31 -1 643.5322 49 39 18 28.5 -3.5 640323 50 43 21 32 0 640324 51 41 23 32 0 640325 52 41 26 33.5 1.5 641.5326 53 42 19 30.5 -1.5 640327 54 47 23 35 3 643328 55 49 27 38 6 649329 56 41 36 38.5 6.5 655.5330 57 51 34 42.5 10.5 666331 58 53 30 41.5 9.5 675.5332 59 52 30 41 9 684.5333 60 49 26 37.5 5.5 690
334 61 54 35 44.5 12.5 702.5335 62 48 30 39 7 709.5336 63 52 31 41.5 9.5 719337 64 47 25 36 4 723
338 65 49 22 35.5 3.5 726.5339 66 45 20 32.5 0.5 727340 67 46 22 34 2 729341 68 40 19 29.5 -2.5 726.5
342 69 33 20 26.5 -5.5 721343 70 28 12 20 -12 709344 71 27 13 20 -12 697345 72 20 -7 6.5 -25.5 671.5
346 73 21 -8 6.5 -25.5 646347 74 18 -7 5.5 -26.5 619.5348 75 29 10 19.5 -12.5 607349 76 32 16 24 -8 599350 77 31 10 20.5 -11.5 587.5351 78 23 11 17 -15 572.5352 79 32 11 21.5 -10.5 562353 80 31 10 20.5 -11.5 550.5354 81 34 11 22.5 -9.5 541355 82 36 8 22 -10 531356 83 45 14 29.5 -2.5 528.5357 84 31 2 16.5 -15.5 513358 85 35 1 18 -14 499
359 86 29 4 16.5 -15.5 483.5360 87 36 9 22.5 -9.5 474361 88 36 9 22.5 -9.5 464.5362 89 35 10 22.5 -9.5 455
363 90 38 11 24.5 -7.5 447.5364 91 37 10 23.5 -8.5 439365 92 39 12 25.5 -6.5 432.51 93 29 8 18.5 -13.5 419
2 94 31 7 19 -13 4063 95 24 3 13.5 -18.5 387.54 96 36 10 23 -9 378.55 97 38 15 26.5 -5.5 373
6 98 47 18 32.5 0.5 373.57 99 47 29 38 6 379.58 100 51 30 40.5 8.5 3889 101 40 18 29 -3 38510 102 21 2 11.5 -20.5 364.511 103 25 1 13 -19 345.512 104 28 4 16 -16 329.513 105 27 18 22.5 -9.5 32014 106 28 8 18 -14 30615 107 27 4 15.5 -16.5 289.516 108 27 3 15 -17 272.517 109 30 6 18 -14 258.518 110 31 10 20.5 -11.5 247
19 111 37 18 27.5 -4.5 242.520 112 41 27 34 2 244.521 113 37 25 31 -1 243.522 114 42 18 30 -2 241.5
23 115 35 14 24.5 -7.5 23424 116 38 13 25.5 -6.5 227.525 117 41 16 28.5 -3.5 22426 118 49 17 33 1 225
27 119 41 16 28.5 -3.5 221.528 120 40 21 30.5 -1.5 22029 121 40 19 29.5 -2.5 217.530 122 39 19 29 -3 214.5
31 123 43 22 32.5 0.5 21532 124 43 23 33 1 21633 125 47 25 36 4 22034 126 48 25 36.5 4.5 224.535 127 54 27 40.5 8.5 23336 128 49 27 38 6 23937 129 45 26 35.5 3.5 242.538 130 46 29 37.5 5.5 24839 131 40 31 35.5 3.5 251.540 132 46 35 40.5 8.5 26041 133 57 35 46 14 27442 134 52 36 44 12 28643 135 50 36 43 11 297
44 136 46 30 38 6 30345 137 46 31 38.5 6.5 309.546 138 46 30 38 6 315.547 139 50 31 40.5 8.5 324
48 140 41 27 34 2 32649 141 42 22 32 0 32650 142 43 28 35.5 3.5 329.551 143 41 28 34.5 2.5 332
52 144 41 23 32 0 33253 145 43 20 31.5 -0.5 331.554 146 45 22 33.5 1.5 33355 147 46 30 38 6 339
56 148 35 20 27.5 -4.5 334.5
57 149 32 15 23.5 -8.5 32658 150 26 -2 12 -20 30659 151 32 -4 14 -18 28860 152 42 9 25.5 -6.5 281.5
61 153 44 18 31 -1 280.562 154 39 15 27 -5 275.563 155 45 15 30 -2 273.564 156 44 22 33 1 274.5
65 157 53 30 41.5 9.5 28466 158 47 29 38 6 29067 159 45 24 34.5 2.5 292.568 160 41 25 33 1 293.569 161 33 15 24 -8 285.570 162 34 11 22.5 -9.5 27671 163 32 18 25 -7 26972 164 33 15 24 -8 26173 165 37 10 23.5 -8.5 252.574 166 44 17 30.5 -1.5 25175 167 48 22 35 3 25476 168 51 28 39.5 7.5 261.577 169 52 27 39.5 7.5 269
78 170 54 29 41.5 9.5 278.579 171 52 26 39 7 285.580 172 47 31 39 7 292.581 173 46 25 35.5 3.5 296
82 174 38 30 34 2 29883 175 50 27 38.5 6.5 304.584 176 59 27 43 11 315.585 177 64 28 46 14 329.5
86 178 67 34 50.5 18.5 34887 179 65 35 50 18 36688 180 60 33 46.5 14.5 380.589 181 49 27 38 6 386.5
90 182 57 23 40 8 394.591 183 61 27 44 12 406.592 184 61 33 47 15 421.593 185 63 31 47 15 436.594 186 63 37 50 18 454.595 187 60 34 47 15 469.596 188 59 38 48.5 16.5 48697 189 65 32 48.5 16.5 502.598 190 59 42 50.5 18.5 52199 191 59 41 50 18 539100 192 57 35 46 14 553101 193 63 32 47.5 15.5 568.5102 194 67 31 49 17 585.5
103 195 73 37 55 23 608.5104 196 78 38 58 26 634.5105 197 77 41 59 27 661.5106 198 77 47 62 30 691.5
107 199 78 42 60 28 719.5108 200 80 43 61.5 29.5 749109 201 80 47 63.5 31.5 780.5110 202 71 43 57 25 805.5
111 203 55 31 43 11 816.5112 204 69 37 53 21 837.5113 205 71 35 53 21 858.5114 206 75 40 57.5 25.5 884
115 207 71 44 57.5 25.5 909.5116 208 62 40 51 19 928.5117 209 68 37 52.5 20.5 949118 210 71 43 57 25 974119 211 58 31 44.5 12.5 986.5120 212 55 27 41 9 995.5121 213 64 29 46.5 14.5 1010122 214 72 35 53.5 21.5 1031.5123 215 79 40 59.5 27.5 1059124 216 81 45 63 31 1090125 217 82 47 64.5 32.5 1122.5126 218 83 44 63.5 31.5 1154127 219 80 45 62.5 30.5 1184.5
128 220 81 48 64.5 32.5 1217129 221 83 45 64 32 1249130 222 82 46 64 32 1281131 223 83 51 67 35 1316
132 224 77 53 65 33 1349133 225 67 35 51 19 1368134 226 63 39 51 19 1387135 227 56 33 44.5 12.5 1399.5
136 228 61 35 48 16 1415.5137 229 61 37 49 17 1432.5138 230 67 30 48.5 16.5 1449139 231 79 40 59.5 27.5 1476.5
140 232 72 40 56 24 1500.5141 233 57 35 46 14 1514.5142 234 68 35 51.5 19.5 1534143 235 75 40 57.5 25.5 1559.5144 236 75 40 57.5 25.5 1585145 237 69 44 56.5 24.5 1609.5146 238 70 38 54 22 1631.5147 239 67 40 53.5 21.5 1653148 240 56 38 47 15 1668149 241 73 42 57.5 25.5 1693.5150 242 75 43 59 27 1720.5151 243 76 49 62.5 30.5 1751152 244 78 49 63.5 31.5 1782.5
153 245 82 52 67 35 1817.5154 246 79 47 63 31 1848.5155 247 77 50 63.5 31.5 1880156 248 76 42 59 27 1907
157 249 78 42 60 28 1935158 250 76 47 61.5 29.5 1964.5159 251 75 35 55 23 1987.5160 252 81 45 63 31 2018.5
161 253 87 50 68.5 36.5 2055162 254 84 49 66.5 34.5 2089.5163 255 86 49 67.5 35.5 2125164 256 84 49 66.5 34.5 2159.5
165 257 80 46 63 31 2190.5
166 258 69 47 58 26 2216.5167 259 71 40 55.5 23.5 2240168 260 75 43 59 27 2267169 261 84 53 68.5 36.5 2303.5
170 262 88 53 70.5 38.5 2342171 263 93 52 72.5 40.5 2382.5172 264 90 58 74 42 2424.5173 265 91 53 72 40 2464.5
174 266 92 54 73 41 2505.5175 267 93 56 74.5 42.5 2548176 268 92 55 73.5 41.5 2589.5177 269 93 63 78 46 2635.5178 270 92 63 77.5 45.5 2681179 271 92 60 76 44 2725180 272 84 60 72 40 2765181 273 81 55 68 36 2801182 274 88 53 70.5 38.5 2839.5183 275 86 59 72.5 40.5 2880184 276 86 54 70 38 2918185 277 87 60 73.5 41.5 2959.5186 278 91 56 73.5 41.5 3001
187 279 89 60 74.5 42.5 3043.5188 280 93 61 77 45 3088.5189 281 94 61 77.5 45.5 3134190 282 89 58 73.5 41.5 3175.5
191 283 91 57 74 42 3217.5192 284 96 57 76.5 44.5 3262193 285 89 63 76 44 3306194 286 80 57 68.5 36.5 3342.5
195 287 82 52 67 35 3377.5196 288 88 53 70.5 38.5 3416197 289 88 55 71.5 39.5 3455.5198 290 88 56 72 40 3495.5
199 291 88 57 72.5 40.5 3536200 292 92 59 75.5 43.5 3579.5201 293 92 56 74 42 3621.5202 294 95 65 80 48 3669.5203 295 90 59 74.5 42.5 3712204 296 84 63 73.5 41.5 3753.5205 297 83 57 70 38 3791.5206 298 89 53 71 39 3830.5207 299 86 55 70.5 38.5 3869208 300 89 55 72 40 3909209 301 88 54 71 39 3948210 302 90 59 74.5 42.5 3990.5211 303 88 58 73 41 4031.5
212 304 86 56 71 39 4070.5213 305 90 58 74 42 4112.5214 306 90 57 73.5 41.5 4154215 307 84 60 72 40 4194
216 308 87 53 70 38 4232217 309 87 47 67 35 4267218 310 87 50 68.5 36.5 4303.5219 311 91 55 73 41 4344.5
220 312 92 58 75 43 4387.5221 313 88 63 75.5 43.5 4431222 314 91 58 74.5 42.5 4473.5223 315 94 62 78 46 4519.5
224 316 94 59 76.5 44.5 4564225 317 94 60 77 45 4609226 318 95 60 77.5 45.5 4654.5227 319 97 62 79.5 47.5 4702228 320 94 65 79.5 47.5 4749.5229 321 88 58 73 41 4790.5230 322 90 62 76 44 4834.5231 323 85 59 72 40 4874.5232 324 88 57 72.5 40.5 4915233 325 85 51 68 36 4951234 326 80 54 67 35 4986235 327 82 52 67 35 5021236 328 82 42 62 30 5051
237 329 86 50 68 36 5087238 330 89 48 68.5 36.5 5123.5239 331 90 53 71.5 39.5 5163240 332 88 55 71.5 39.5 5202.5
241 333 88 53 70.5 38.5 5241242 334 84 47 65.5 33.5 5274.5243 335 84 45 64.5 32.5 5307244 336 84 43 63.5 31.5 5338.5
245 337 86 52 69 37 5375.5246 338 86 49 67.5 35.5 5411247 339 85 48 66.5 34.5 5445.5248 340 87 52 69.5 37.5 5483
249 341 73 52 62.5 30.5 5513.5250 342 78 51 64.5 32.5 5546251 343 82 50 66 34 5580252 344 72 36 54 22 5602253 345 79 40 59.5 27.5 5629.5254 346 80 48 64 32 5661.5255 347 82 49 65.5 33.5 5695256 348 84 52 68 36 5731257 349 82 55 68.5 36.5 5767.5258 350 86 58 72 40 5807.5259 351 85 58 71.5 39.5 5847260 352 87 55 71 39 5886261 353 90 60 75 43 5929
262 354 87 55 71 39 5968263 355 78 53 65.5 33.5 6001.5264 356 73 53 63 31 6032.5265 357 77 51 64 32 6064.5
266 358 70 50 60 28 6092.5267 359 73 48 60.5 28.5 6121268 360 76 50 63 31 6152269 361 71 45 58 26 6178
270 362 64 51 57.5 25.5 6203.5 68 726.5 length of freeze (day) 55
271 363 62 47 54.5 22.5 6226 123 215 frost index (oF-day)511.5272 364 67 43 55 23 6249 average temperature 49.2273 365 68 42 55 23 6272
0
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0 50 100 150 200 250
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day of frost year
Blanding, UT
1961-1962
ATTACHMENT B.2
MODIFIED BERGGEN FORMULA OUTPUT
1919-1920
1920-1921
1923-1924
1924-1925
1927-1928
1928-1929
1929-1930
1931-1932
1938-1939
1939-1940
1940-1941
1946-1947
1947-1948
1948-1949
1954-1955
1955-1956
1956-1957
1961-1962
1962-1963
1963-1964
1964-1965
1970-1971
1971-1972
1972-1973
1980-1981
1981-1982
1982-1983
1983-1984
1984-1985
1985-1986
1986-1987
1987-1988
1989-1990
1990-1991
1991-1992
1992-1993
1993-1994
1994-1995
1995-1996
1996-1997
1997-1998
1998-1999
1999-2000
2000-2001
2001-2002
2002-2003
2003-2004
2005-2006
2006-2007
2007-2008
2008-2009
2009-2010
2010-2011
ATTACHMENT B.3
RESULTS OF EXTREME VALUE FROST PENETRATION ANALYSIS
Frost Penetration Prediction
Extreme-Value Probability
White Mesa (Blanding, UT)
recurrance interval (Tr)standard predicted
year interval rank (m)(n + 1 / m)1/Tr variate frost depth (inches)
1994-1995 1 54.000 0.02 3.9797 31.0
1997-1998 2 27.000 0.04 3.2770 25.9
1995-1996 3 18.000 0.06 2.8619 24.5
1993-1994 4 13.500 0.07 2.5645 24.0
1998-1999 5 10.800 0.09 2.3314 24.0
1999-2000 6 9.000 0.11 2.1389 22.4
2000-2001 7 7.714 0.13 1.9745 21.0
2002-2003 8 6.750 0.15 1.8304 20.9
1961-1962 9 6.000 0.17 1.7020 20.6
2005-2006 10 5.400 0.19 1.5857 19.1
1985-1986 11 4.909 0.20 1.4794 18.0
2001-2002 12 4.500 0.22 1.3811 18.0
2003-2004 13 4.154 0.24 1.2895 18.0
2006-2007 14 3.857 0.26 1.2036 16.3
1955-1956 15 3.600 0.28 1.1226 15.9
1989-1990 16 3.375 0.30 1.0458 15.8
1996-1997 17 3.176 0.31 0.9727 14.9
1940-1941 18 3.000 0.33 0.9027 14.3
2008-2009 19 2.842 0.35 0.8355 14.0
1982-1983 20 2.700 0.37 0.7708 14.0
1986-1987 21 2.571 0.39 0.7083 13.9
1956-1957 22 2.455 0.41 0.6477 13.5
1983-1984 23 2.348 0.43 0.5888 13.4
2010-2011 24 2.250 0.44 0.5314 13.2
1992-1993 25 2.160 0.46 0.4753 11.9
1964-1965 26 2.077 0.48 0.4204 11.3
1939-1940 27 2.000 0.50 0.3665 10.6
1991-1992 28 1.929 0.52 0.3135 10.6
1920-1921 29 1.862 0.54 0.2612 10.3
1984-1985 30 1.800 0.56 0.2096 10.1
1919-1920 31 1.742 0.57 0.1584 10.0
2009-2010 32 1.688 0.59 0.1077 10.0
1981-1982 33 1.636 0.61 0.0571 9.9
1971-1972 34 1.588 0.63 0.0068 9.8
1927-1928 35 1.543 0.65 -0.0436 9.5
1963-1964 36 1.500 0.67 -0.0940 9.0
1946-1947 37 1.459 0.69 -0.1448 9.0
2007-2008 38 1.421 0.70 -0.1959 8.4
1947-1948 39 1.385 0.72 -0.2476 8.2
1987-1988 40 1.350 0.74 -0.3001 7.4
1970-1971 41 1.317 0.76 -0.3535 7.3
1923-1924 42 1.286 0.78 -0.4082 7.0
1938-1939 43 1.256 0.80 -0.4644 6.5
1980-1981 44 1.227 0.81 -0.5226 6.5
1990-1991 45 1.200 0.83 -0.5832 6.3
1962-1963 46 1.174 0.85 -0.6469 6.0
1929-1930 47 1.149 0.87 -0.7145 6.0
1954-1955 48 1.125 0.89 -0.7872 6.0
1928-1929 49 1.102 0.91 -0.8669 6.0
1972-1973 50 1.080 0.93 -0.9565 4.5
1924-1925 51 1.059 0.94 -1.0614 4.4
1948-1949 52 1.038 0.96 -1.1927 3.5
1931-1932 53 1.019 0.98 -1.3835 3.4
2 1.3
1.2
1.1
1.0
0.9
~ $ ! 0.8
= g.0.1 0 u; £ 0.6 .,,
$ :6 0.5
2! 0..
0.4
0.3
0.2
0.1
0.0
·2.0 ·1.0 o.o
White Mesa Uranium Mill,
Blanding, UT climate data
Recurrence Interval (Yr)
5 20 30 50 20
--------------------
--1 1--1--1 1--
I I
I I I
--~ t-!--
I
1.0 2.0 3.0 4.0 5.0
Standard Variate
6.0
40
35
30
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25 -a
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0 20 .,,
2 I.I. .,,
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0

Updated Tailings Cover Design Report

APPENDIX C

RADON EMANATION MODELING

Energy Fuels Resources (USA), Inc. MWH Americas, Inc.
C-1 April 2016
C.1 BACKGROUND
This appendix presents the results of modeling the emanation of radon-222 from the top surface
of the proposed cover over the White Mesa tailing impoundments to achieve the State of Utah’s long-term radon emanation standard for uranium mill tailings (Utah Administrative Code, Rule
313-24). These results comprise an update of radon emanation modeling presented in Attachment F of the 2009 Reclamation Plan (Denison, 2009) and Appendix H of the Infiltration and Contaminant Transport Modeling Report (Denison, 2010), as well as an update to Appendix
C of the 2011 Updated Tailings Cover Design report (MWH, 2011). This appendix provides a summary of additional analyses of radon attenuation through the proposed evapotranspiration (ET) cover, and incorporates the revised cover grading design, results of cover material testing
conducted in 2010 and 2012 (summarized in Attachment B of EFRI, 2012), and results of tailings testing conducted in 2013 (presented in MWH, 2015).

The monolithic ET cover system evaluated in this appendix consists of the following layers from top to bottom:

• 0.5 ft (15 cm) Erosion Protection Layer (gravel-admixture or topsoil)
• 3.5 ft (107 cm) Water Storage/Biointrusion/Frost Protection/Radon Attenuation Layer (loam to sandy clay)
• 3.0 to 4.0 ft (91 to 122 cm) Radon Attenuation Layer (highly compacted loam to sandy clay)
• 2.5 ft (76 cm) Radon Attenuation and Grading Layer (loam to sandy clay)
The loam to sandy clay soil used to construct the ET cover, referred to in previous reports (Titan
1996, Knight Piesold 1999) as random/platform fill, is stockpiled at the site.
C.2 DESCRIPTION OF MODEL AND INPUT VALUES

The thickness of the reclamation cover necessary to limit radon emanation from the disposal areas was analyzed using the NRC RADON model (NRC, 1989). The model utilizes the one-
dimensional radon diffusion equation, which uses the physical and radiological characteristics of
the tailings and overlying materials to calculate the rate of radon emanation from the tailings through the cover. The model was used to calculate the cover thickness required to limit the radon emanation rate through the top of the cover to 20 picocuries per square meter per second
(pCi/m2-s), following the guidance presented in U.S. Nuclear Regulatory Commission (NRC) publications NUREG/CR-3533 and Regulatory Guide 3.64 (NRC 1984, 1989). The rate of
emanation standard is applied to the average emanation over the entire surface of the disposal
area.
The input parameters used in the model are based on engineering experience with similar
projects, recent laboratory testing results for samples of random fill (summarized in Attachment B of EFRI, 2012) and tailings (MWH, 2015), in addition to available data from previous work by
others, including Chen and Associates (1978, 1979, 1987), Rogers and Associates Engineering
Corporation (1988), Western Colorado Testing (1999a, 1999b), IUC (2000), and Titan (1996). The available data from testing performed by others was summarized in Appendix A of the
Updated Tailings Cover Design report (MWH, 2011). Appendix A will be revised for the next version of the Updated Tailings Cover Design report to include data from recent random fill and tailings testing. The input parameters and values used in the model are outlined below.

Energy Fuels Resources (USA), Inc. MWH Americas, Inc.
C-2 April 2016
C.2.1 Thickness of Tailings
The thickness of tailings currently deposited in Cells 2 and 3 is approximately 30 ft (914 cm),
while the anticipated tailings thickness deposited in Cells 4A and 4B will be approximately 42 ft (1,280 cm). As documented in NRC Regulatory Guide 3.64, a tailings thickness greater than
100 to 200 cm is effectively equivalent to an infinitely thick radon source. Therefore, a thickness of 500 cm may be used in RADON to represent an equivalent infinitely thick tailings source of radon.
C.2.2 Radium Activity Concentration

The radium-226 activity concentration values for the tailings in the impoundments are estimated based on material inventory data provided by Energy Fuels Resources (USA), Inc. (EFRI). A
summary of the material inventories for Cells 2 and 3 and the projected inventory for Cells 4A
and 4B is provided in Attachment C.1. The radium-226 and thorium-230 activity concentrations are listed for each material in the inventories. These values were used to calculate a weighted
average for radium-226 and thorium-230 activity concentrations for the tailings using the volume
of material placed in Cells 2 and 3. In addition, these values were used to project radium-226 and thorium-230 activity concentrations for the materials to be placed in Cells 4A and 4B.
Calculations for radium-226 from decay of thorium-230 were also made. These calculations are also provided in Attachment C.1. The results for Cell 3 and Cells 4A and 4B indicate the highest radium-226 values are a result of original radium-226 and radium-226 from thorium-230 decay
at approximately 1000 years. The results are summarized below and in Table C.1. Table C.1. Radium Activity Concentrations
Tailings Cell
Weighted Average
Radium-226 Activity Concentration (pCi/g)
Weighted Average
Thorium-230 Activity Concentration (pCi/g)
Total Radium-226 Activity Concentration (original
radium-226 and radium-226 from thorium-230 decay) (pCi/g)
Cell 2 923 923 923
Cell 3 606 1048 758
Cells 4A and 4B 617 695 642

Random Fill and Erosion Protection. The radium activity of the random fill and erosion
protection layer is assumed to be zero, based on guidance in Regulatory Guide 3.64 (NRC,
1989) which states that radium activity in the cover soils may be neglected for cover design purposes provided the cover soils are obtained from background materials that are not
associated with ore formations or other radium-enriched materials.
C.2.3 Radon Emanation Coefficient
The radon emanation coefficient used in the model for the tailings is 0.20 based on laboratory data (Rogers & Associates, 1988) and the recommendation in NUREG-1620 (NRC, 2003) to
use a value of 0.20 for tailings if there is limited site-specific data.
The radon emanation coefficient used in the model for the cover layers is 0.35. This is the
conservative default value used in the RADON model.

Energy Fuels Resources (USA), Inc. MWH Americas, Inc.
C-3 April 2016
C.2.4 Specific Gravity, Density and Porosity
The densities and porosities of the tailings and cover materials used in the model are based on
laboratory testing results. The values are summarized in Table C.2 and discussed in more detail below.
Table C.2. Density and Porosity Values

Material Specific Gravity
Degree of
Compaction (%)
Placed
Density (pcf)
Placed
Density (g/cc) Porosity
Erosion Protection (topsoil) 2.61 85% SP 100 1.6 0.38
Erosion Protection (rock mulch)* 2.62 85% SP 106 1.7 0.35
Random fill (low compaction water storage, rooting zone) 2.63 85% SP 100 1.6 0.39
Random Fill (high compaction) 2.63 95% SP 112 1.8 0.32
Random Fill (in place, low compaction, platform fill) 2.63 80% SP 94 1.5 0.43
Tailings 2.80 --- 96 1.5 0.45
SP = standard proctor compaction * Estimated by applying a 25% rock correction to the topsoil
The specific gravity of the tailings was estimated as 2.80 based as the weighted average specific gravity from laboratory tests using estimated percentages of sand, sand-slime, and slime tailings of 10, 65, and 25 percent, respectively (MWH, 2015). The dry density of the
tailings was estimated as 96 pcf, based on laboratory tests (Chen and Associates, 1987 and Western Colorado Testing, 1999b) and assuming the upper bound long-term density of the tailings should be no greater than 90 percent of the average laboratory measured maximum dry
density for the tailings. The referenced reports are provided as part of Appendix A.1 of MWH (2011). The porosity of the tailings was calculated using the estimated specific gravity and dry density based on the following equation:
𝑛𝑛=1 −�𝛾𝛾𝑑𝑑𝐺𝐺𝑠𝑠𝛾𝛾𝑤𝑤� (Eq. C.1)
where n = porosity,
γd = dry density of soil, Gs = specific gravity of soil, and
γw = unit weight of water.
The specific gravity and dry density values used in the model for the random fill layers were
estimated by laboratory tests (ATT, 2010 and UWM, 2012). The referenced reports will be
provided as part of Appendix A.2 of the next version of the of the Updated Tailings Cover Design report. These reports were presented in Attachment B of EFRI (2012). The estimation
for the values used in the model is provided in Attachment C.2. The porosity values for the
layers were calculated using equation C.1. The proposed cover system has three layers of random fill placed at different levels of compaction. The lower layer of random fill consists of a
minimum thickness of 2.5 feet of random fill that is assumed to be dumped and minimally
compacted by construction equipment to approximately 80 percent standard Proctor. The middle layer (3.0 – 4.0 feet) of random fill will be compacted to 95 percent of standard Proctor.
In Cell 2 and parts of Cell 3, the lower layer of random fill is already placed and is approximately

Energy Fuels Resources (USA), Inc. MWH Americas, Inc.
C-4 April 2016
3 feet. It is assumed the upper 6 inches of this fill will be part of the middle random fill layer and can be compacted by additional passes of compactors to reach 95 percent of standard Proctor
compaction. The uppermost 3.5 feet of random fill will be placed at 85 percent of standard
Proctor compaction in order to optimize water storage and rooting characteristics for plant growth.
The 0.5 foot erosion protection layer is assumed to be topsoil or rock mulch consisting of topsoil material mixed with 25 percent gravel by weight. The specific gravity and density of the topsoil
was estimated to be 2.61 and 100 pcf, respectively, based on laboratory testing results for topsoil (UWM, 2012) The specific gravity and density of the rock mulch was estimated to be 2.62 and 106 pcf, respectively, based on laboratory testing results for topsoil (UWM, 2012) and
applying a rock correction based on 25 percent gravel by weight.
C.2.5 Long-term Moisture Content
The long-term moisture content value for the tailings is assumed to be 6 percent. This is a
conservative assumption, per NRC Regulatory Guide 3.64 (NRC, 1989), which represents the
lower bound for moisture in western soils and is typically used as a default value for the long-term water content of tailings. Use of 15 bar water contents to estimate a long-term water
content is one of the methods recommended in NRC (2003) for radon emanation modeling.
MWH collected representative samples from the on-site random fill and topsoil stockpiles for
use in estimating the long-term moisture contents for the random fill and erosion protection cover layers. The laboratory results for the 15 bar water contents for these samples were used to estimate long-term water contents for the random fill and erosion protection layers.
The long-term water content of the topsoil was estimated as 5.2 percent based on the measured 15 bar gravimetric water content for a topsoil sample (E1-A) which represents the average index
properties for the topsoil stockpiles (UWM, 2012). The long-term water content of the rock mulch was estimated as 4 percent based on the addition of 25 percent gravel by weight to the topsoil.
Based on the cover material gradations, the cover soils were bracketed into three groups, finer
grained soils, uniform graded soils, and broadly graded soils. A weighted average procedure
that accounts for the size of soil type based on the stockpile volumes was incorporated to determine the average long-term gravimetric water content for the random fill using the
measured 15 bar water contents. The estimation of the long-term water content value for the
cover material is provided in Attachment C.2.
The average long-term moisture contents are summarized in Table C.3.
Table C.3. Estimated Long-Term Moisture Contents

Material Gravimetric Water Content (%)
Erosion Protection (topsoil) 5.2
Erosion Protection (rock mulch) 4.0
Random fill 6.7
Tailings 6.0

Energy Fuels Resources (USA), Inc. MWH Americas, Inc.
C-5 April 2016
C.2.6 Diffusion Coefficient
The radon diffusion coefficient used in the RADON model can either be calculated based on an
empirical relationship dependent upon porosity and the degree of saturation or input directly in the model using values measured from laboratory testing. Although laboratory test data was
available for the tailings and the cover material (Rogers & Associates 1988), tests were performed at porosities and water contents different than those estimated to represent long-term conditions. Therefore, the empirical relationship presented in Rogers and Nielson (1991) was
used, resulting in the calculated values summarized in Table C.4 below. Table C.4. Estimated Radon Diffusion Coefficients
Material Diffusion Coefficient (cm2/s)
Erosion Protection (rock mulch) 0.0254
Random Fill (low compaction water storage, rooting zone) 0.0225
Random Fill (high compaction) 0.0160
Random Fill (in place, low compaction, platform fill) 0.0260
Tailings 0.0288

C.3 MODEL RESULTS
The radon emanation modeling results show that the designed cover systems presented in
Table C.5 will reduce the rate of radon emanation to values below the limit of 20 picocuries per square meter per second (pCi/m2-s) averaged over the entire area of the tailings impoundments,
which is the regulatory criterion (Utah Administrative Code, Rule 313-24). The RADON model
output is provided in Attachment C.3.
Table C.5. Summary of Results
Cover Layer
Cover Thickness (ft)
Cell 2 Cell 3 Cells 4A/4B
Erosion Protection (rock mulch or topsoil) 0.5 0.5 0.5
Random Fill (low compaction water storage, rooting zone) 3.5 3.5 3.5
Random Fill (high compaction) 4.0 3.5 3.0
Random Fill (in place, low compaction, platform fill) 2.5 2.5 2.5
Total Cover Thickness 10.5 10.0 9.5
C.4 IMPACTS OF INCREASED THICKNESS OF RANDOM FILL
Radon modeling as discussed above assumed that the lower layer of random fill was placed at
80 percent of standard Proctor compaction, and had a thickness of 2.5 feet (assuming top 6 inches can be compacted to 95 percent of standard Proctor density prior to placement of
additional fill). However, there are some areas within Cells 2 and 3 which show thicknesses of existing random fill greater than 3.0 feet. Additional modeling was performed to determine the

Energy Fuels Resources (USA), Inc. MWH Americas, Inc.
C-6 April 2016
minimum thickness of highly compacted random fill required in order to meet regulatory criterion to limit the radon emanation rate through the top of the cover to 20 pCi/m2-s. This modeling
indicates that for every extra foot of low-compaction random fill (80 percent standard Proctor
compaction), the highly compacted random fill layer (95 percent standard Proctor compaction) can be reduced in thickness by approximately 0.75 feet. This trend is shown in Figure C.1. The
RADON model output is provided in Attachment C.4. C.5 REFERENCES
Advanced Terra Testing (ATT), 2010. Denison White Mesa Project, Job No. 2521-53, Laboratory Testing for Borrow Stockpiles. October.
Chen and Associates, Inc., 1978. Earth Lined Tailings Cells, White Mesa Uranium Project,
Blanding, Utah, Report prepared for Energy Fuels Nuclear, Inc., July 18.
Chen and Associates, Inc., 1979. Soil Property Study, Proposed Tailings Retention Cells, White
Mesa Uranium Project, Blanding, Utah, Report prepared for Energy Fuels Nuclear, Inc.
January 23.
Chen and Associates, Inc., 1987. Physical Soil Data, White Mesa Project, Blanding Utah,
Report prepared for Energy Fuels Nuclear, Inc.
Denison Mines USA Corporation (Denison), 2009. Reclamation Plan, White Mesa Mill, Blanding Utah, Revision 4.0, November.
Denison Mines USA Corporation (Denison), 2010. Revised Infiltration and Contaminant Transport Modeling Report, White Mesa Mill, Blanding, Utah, March.
Energy Fuels Resources (USA), Inc. (EFRI), 2012. Responses to Interrogatories – Round 1 for Reclamation Plan, Revision 5.0, March 2012. August 15.

International Uranium Corporation (IUC), 2000. Reclamation Plan, White Mesa Mill, Blanding, Utah, Source Material License No. SUA-1358, Docket No. 40-8681, Revision 3.0. July.

Knight Piesold, 1999. Radon Emanation Calculations (Revised). Technical Memorandum from Roman Popielak and Pete Duryea to File 1626B. April 15.
MWH Americas, Inc. (MWH), 2011. Updated Tailings Cover Design. Prepared for Denison Mines (USA) Corp. September.
MWH Americas, Inc. (MWH), 2015. White Mesa Mill Tailings Data Analysis Report. Prepared for Energy Fuels Resources (USA) Inc. April.
Rogers & Associates Engineering Corporation, 1988. Two separate letters prepared by Renee Y. Bowser for C.O. Sealy of Umetco Minerals Corporation. March 4 and May 9.
Rogers, V.C., and K.K. Nielson. 1991. Correlations for Predicting Air Permeabilities and Rn- 222
Diffusion Coefficients of Soils, Health Physics (61) 2.
TITAN Environmental Corporation (Titan), 1996. Tailings Cover Design, White Mesa Mill,
Blanding Utah, Report prepared for Energy Fuels Nuclear, Inc. September.

Energy Fuels Resources (USA), Inc. MWH Americas, Inc.
C-7 April 2016

University of Wisconsin-Madison (UWM), Wisconsin Geotechnics Laboratory, 2012.
Compaction and Hydraulic Properties of Soils from Banding, Utah. Geotechnics Report
NO. 12-41 by C.H. Benson and X. Wang. July 24.
U.S. Nuclear Regulatory Commission (NRC), 1984. Radon Attenuation Handbook for Uranium
Mill Tailings Cover Design, NUREG/CR-3533.
U.S. Nuclear Regulatory Commission (NRC), 1989. Calculation of Radon Flux Attenuation by Earthen Uranium Mill Tailings Covers, Regulatory Guide 3.64.
U.S. Nuclear Regulatory Commission (NRC), 2003. Standard Review Plan for the Review of a Reclamation Plan for Mill Tailings Sites Under Title II of the Uranium Mill Tailings Radiation Control Act of 1978. Final Report. NUREG-1620, Rev. 1. June.
Western Colorado Testing, Inc., 1999a. Soil Sample Testing Results for On-Site Random Fill and Clay Stockpiles, prepared for International Uranium (USA) Corporation. May.

Western Colorado Testing, Inc., 1999b. Report of Soil Sample Testing of Tailings Collected from Cell 2 and Cell 3, Prepared for International Uranium (USA) Corporation. May 4.

PROJECT
RADON EMANATION
INCREASED THICKNESS OF LOWER RANDOM FILL VS TOTAL COVER THICKNESS
TITLE
DATE
FILENAME
FIGURE C.1
White Mesa Mill Reclamation
AUG 2015
Summary of Radon Runs_8-2015pptx
y = 0.2752x + 9.7731
y = -0.7248x + 5.7705
y = 0.28x + 9.2132
y = -0.72x + 5.2106
0.0
2.0
4.0
6.0
8.0
10.0
12.0
14.0
0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0
Re
q
u
i
r
e
d

T
h
i
c
k
n
e
s
s

(
f
t
)
Thickness of Lower Random Fill (ft)
Cell 2 Total Cover Thickness
Cell 2 Thickness of Highly Compacted Random Fill Layer
Cell 3 Total Cover Thickness
Cell 3 Thickness of Highly Compacted Random Fill Layer

ATTACHMENT C.1
RADIUM-226 ESTIMATION TABLES

Energy Fuels Resources (USA) Inc.
White Mesa Mill Site, Summary of Processed Ores and Alternate Feeds
Material Category/Location Origin/ Description Dates
Total Mass Ores
Processed (tons) %U3O8
Ra-226 Activity
Conc.a
(pCi/g)
Th-230 Activity
Conc.b
(pCi/g) Reference/Comments
Processed Ores
Natural Ores Arizona Strip Ores 1980 - 2000 1,000,000 0.55 1546.6 1546.6 Total quantity for both ores from Denison (2009, 2011), ore grades and quantity breakdown from Roberts (2012b)
Colorado Plateau Ores 1980 - 2000 2,840,536 0.25 703.0 703.0 Total quantity for both ores from Denison (2009, 2011), ore grades and quantity breakdown from Roberts (2012b)
Pandora 2008-2011 231,191 0.218 613.0 613.0 Data provided from D. Turk (2012a)
Daneros 2010-2011 71,287 0.269 756.4 756.4 Data provided from D. Turk (2012a)
Beaver 2010-2011 90,280 0.174 489.3 489.3 Data provided from D. Turk (2012a)
Arizona 1 2010-2011 41,863 0.608 1709.7 1709.7 Data provided from D. Turk (2012a)
Sunday 2008-2011 20,251 0.178 500.5 500.5 Data provided from D. Turk (2012a)
West Sunday 2008-2010 79,744 0.157 441.5 441.5 Data provided from D. Turk (2012a)
Topaz 2008-2010 16,869 0.128 359.9 359.9 Data provided from D. Turk (2012a)
St. Jude 2008-2010 29,572 0.167 469.6 469.6 Data provided from D. Turk (2012a)
Tony M 2008-2009 189,876 0.131 368.4 368.4 Data provided from D. Turk (2012a)
Dawn Mining 2009-2010 2,875 0.456 1282.3 1282.3 Data provided from D. Turk (2012a)
Carnation 2009-2010 5,584 0.166 466.8 466.8 Data provided from D. Turk (2012a)
Purchased Ore 2010-2011 18,008 0.146 410.6 410.6 Data provided from D. Turk (2012a)
Humbug Cressler 2011 118 0.044 123.7 123.7 Data provided from D. Turk (2012a)
Alternate Feeds
Linde Soil 1996-1999, 2002-2003, 2007 258,992 33 133 Date range est. from Denison (2011) and Roberts (2012c). Quantities est. from Roberts (2012a,2012c). Activities est. from Turk (2012b).
Ashland 1 Soil 1996-1999, 2002-2003 317,831 91.3 1849 Date range est. from Denison (2011) and Roberts (2012c). Quantities and activities est. from Roberts (2012a,2012c).
Heritage Monazite sands 1996-1999, 2002-2003, 2007 7,374 19.4 10.6 Date range est. from Denison (2011) and Roberts (2012c). Quantities est. from Roberts (2012a,2012c). Activities est. from Turk (2012b).
Cabot Tantalum residues 1996-1999 16,828 772 118 Date range est. from Denison (2011) and Roberts (2012c). Quantities est. from Roberts (2012a,2012c). Activities est. from Turk (2012b).
Ashland 2 Soil 1996-1999 43,981 91.3 1849 Date range est. from Denison (2011) and Roberts (2012c). Quantities and activities est. from Roberts (2012a,2012c).
Cameco KF product 1996-1999 1,966 0.6 5.3 Date range est. from Denison (2011) and Roberts (2012c). Quantities est. from Roberts (2012a,2012c). Activities est. from Turk (2012b).
Allied Signal/Honeywell Calcium Fluoride 1996-1997 2,343 989 23800 Date range est. from Denison (2011) and Roberts (2012c). Quantities est. from Roberts (2012a,2012c). Activities est. from Turk (2012b).
Cameco Phosph. regen. product 1996-1999 557 2.70 2.10 Date range est. from Denison (2011) and Roberts (2012c). Quantities est. from Roberts (2012a,2012c). Activities est. from Turk (2012b).
Cameco Calcined product 1996-1999 2,197 1040 9170 Date range est. from Denison (2011) and Roberts (2012c). Quantities est. from Roberts (2012a,2012c). Activities est. from Turk (2012b).
Allied Signal KOH solution recovery 1996-1999 1,526 989 0.00 Date range est. from Denison (2011) and Roberts (2012c). Quantities est. from Roberts (2012a,2012c). Activities est. from Harold (2012a) and Turk (2012b).
Rhone-Poulenc Uranyl nitrate hexahydrate 1996-1997 17 156 2550 Date range est. from Denison (2011) and Roberts (2012c). Quantities est. from Roberts (2012a,2012c). Activities est. from Harold (2012a) and Turk (2012b).
Cameco UF4 with filter ash 1996-1999 10 156 2550 Date range est. from Denison (2011) and Roberts (2012c). Quantities est. from Roberts (2012a,2012c). Activities est. from Turk (2012b).
Nev. Test Site Cotter Concentrate 1996-1997 420 3590 585000 Date range est. from Denison (2011) and Roberts (2012c). Quantities and activities est. from Roberts (2012a,2012c).
Molycorp 2002-2003, 2007 11,689 38.6 268.0 Date range est. from Denison (2011) and Roberts (2012c). Quantities est. from Roberts (2012a,2012c). Activities est. from Turk (2012b).
Cabot Tantalum residues 2011 8,700 772 118 Date range est. from Denison (2011) and Roberts (2012c). Quantities est. from Roberts (2012a,2012c). Activities est. from Turk (2012b).
Cameco UF4 2009-2010 462 156 2550 Date range est. from Denison (2011) and Roberts (2012c). Quantities est. from Roberts (2012a,2012c). Activities est. from Turk (2012b).
Allied Signal/Honeywell Calcium Fluoride 2011 1,969 989 23800 Date range est. from Denison (2011) and Roberts (2012c). Quantities est. from Roberts (2012a,2012c). Activities est. from Turk (2012b).
FMRI (Fansteel) 2011 1,369 236 4.9 Date range est. from Denison (2011) and Roberts (2012c). Quantities est. from Roberts (2012a,2012c). Activities est. from Turk (2012b).
Notes:aValues for ores estimated using method in NRC Reg. Guide 3.64 (1989) of multiplying the ore grade by 2812 pCi/g.
bValues for thorium estimated as Ra-226 values.
References:
Denison Mines USA Corporation (Denison), 2009. Reclamation Plan, White Mesa Mill, Blanding Utah, Revision 4.0, November.
Denison Mines USA Corporation (Denison), 2011. Reclamation Plan, White Mesa Mill, Blanding Utah, Revision 5.0, September.
Roberts, H., 2012a. Electronic communication including files "InvThNov00.xls and Inventory Umass in tails.xls" from Harold Roberts, Denison Mines (USA) Corp., to Melanie Davis, MWH Americas, Inc., July 20.
Roberts, H., 2012b. Personal communication from Harold Roberts, Denison Mines (USA) Corp., to Melanie Davis, MWH Americas, Inc., June 21.
Roberts, H., 2012c. Electronic communication including file "Alternate Feed Tons.pdf" and personal communication from Harold Roberts, Denison Mines (USA) Corp., to Melanie Davis, MWH Americas, Inc., July 24.
Turk, D., 2012a. Electronic communication including file "Ore Numbers.pdf" from David Turk, Denison Mines (USA) Corp., to Melanie Davis, MWH Americas, Inc., June 8.
Turk, D., 2012b. Electronic communication including file "DAC s Calculations 2012_rev6-29-12" from David Turk, Denison Mines (USA) Corp., to Melanie Davis, MWH Americas, Inc., June 29.
Impoundment Inventory Summary_7Aug2012_MWH:Inventory
Energy Fuels Resources (USA) Inc.
Estimation of Cell 2 Ra-226 and Th-230 Activity Concentrations for Tailings
Material Category/Location Origin/ Description Dates
Total Mass
Ores Processed (tons)
Total Mass Ore
Processed
for Cell 2a
(tons)%U3O8
Ra-226
Activity
Conc.b
(pCi/g)
Th-230
Activity
Conc.c
(pCi/g) Reference/Comments
Processed Ores
Arizona Strip Ores 1980 - 2000 1,000,000 598,875 0.55 1547 1547 Total quantity for both ores from Denison (2009, 2011), ore grades and quantity breakdown from Roberts (2012b)Colorado Plateau Ores 1980 - 2000 2,840,536 1,701,125 0.25 703 703 Total quantity for both ores from Denison (2009, 2011), ore grades and quantity breakdown from Roberts (2012b
Total Tons 2,300,000 Weighted Ave. 923 923
Notes:cEstimated from total tons of tailings to Cell 2 from Denison (2009), Attachment E. Estimated mass is for ore processed. Material placed in Cell 2 are only those listed in the table (Roberts, 2012c).
bValues for ores estimated using method in NRC Reg. Guide 3.64 (1989) of multiplying the ore grade by 2812 pCi/g.
cValues for thorium estimated as Ra-226 values.
References:
Denison Mines USA Corporation (Denison), 2009. Reclamation Plan, White Mesa Mill, Blanding Utah, Revision 4.0, November.
Denison Mines USA Corporation (Denison), 2011. Reclamation Plan, White Mesa Mill, Blanding Utah, Revision 5.0, September.
Roberts, H., 2012b. Personal communication from Harold Roberts, Denison Mines (USA) Corp., to Melanie Davis, MWH Americas, Inc., June 21.
Roberts, H., 2012c. Electronic communication including file "Alternate Feed Tons.pdf" and personal communication from Harold Roberts, Denison Mines (USA) Corp., to Melanie Davis, MWH Americas, Inc., July 24.
Natural Ores
Impoundment Inventory Summary_7Aug2012_MWH:Cell 2
Energy Fuels Resources (USA) Inc.
Estimation of Cell 3 Ra-226 and Th-230 Activity Concentrations for Tailings
Material Category/Location Origin/ Description Dates
Total Mass Ores Processed (tons)
Total Mass
Ore Processed
for Cell 3a
(tons)%U3O8
Ra-226 Activity
Conc.a
(pCi/g)
Th-230 Activity
Conc.b
(pCi/g) Reference/Comments
Processed Ores
Natural Ores Arizona Strip Ores 1980 - 2000 1,000,000 401,125 0.55 1546.6 253.15 1546.6 253.15 Total quantity for both ores from Denison (2009, 2011), ore grades and quantity breakdown from Roberts (2012b)
Colorado Plateau Ores 1980 - 2000 2,840,536 1,139,411 0.25 703.0 326.85 703.0 326.85 Total quantity for both ores from Denison (2009, 2011), ore grades and quantity breakdown from Roberts (2012b)
Pandora 2008 80,046 80,046 0.218 613.0 20.02 613.02 20.02 Data provided from D. Turk (2012a)
Sunday 2008 12,066 12,066 0.178 500.5 2.46 500.54 2.46 Data provided from D. Turk (2012a)West Sunday 2008 53,613 53,613 0.157 441.5 9.66 441.48 9.66 Data provided from D. Turk (2012a)Topaz 2008 8,746 8,746 0.128 359.9 1.28 359.94 1.28 Data provided from D. Turk (2012a)St. Jude 2008 15,140 15,140 0.167 469.6 2.90 469.60 2.90 Data provided from D. Turk (2012a)Tony M 2008 74,802 74,802 0.131 368.4 11.24 368.37 11.24 Data provided from D. Turk (2012a)
Alternate Feeds
Linde Soil 1996-1999, 2002-2003, 2007 258,992 258,992 33 3.49 133 14.06 Date range est. from Denison (2011) and Roberts (2012c). Quantities est. from Roberts (2012a,2012c). Activities est. from Turk (2012b).
Ashland 1 Soil 1996-1999, 2002-2003 317,831 317,831 91.3 11.84 1849 239.80 Date range est. from Denison (2011) and Roberts (2012c). Quantities and activities est. from Roberts (2012a,2012c).
Heritage Monazite sands 1996-1999, 2002-2003, 2007 7,374 7,374 19.4 0.06 10.6 0.03 Date range est. from Denison (2011) and Roberts (2012c). Quantities est. from Roberts (2012a,2012c). Activities est. from Turk (2012b).
Cabot Tantalum residues 1996-1999 16,828 16,828 772 5.30 118 0.81 Date range est. from Denison (2011) and Roberts (2012c). Quantities est. from Roberts (2012a,2012c). Activities est. from Turk (2012b).Ashland 2 Soil 1996-1999 43,981 43,981 91.3 1.64 1849 33.18 Date range est. from Denison (2011) and Roberts (2012c). Quantities and activities est. from Roberts (2012a,2012c). Cameco KF product 1996-1999 1,966 1,966 0.6 0.00 5.3 0.00 Date range est. from Denison (2011) and Roberts (2012c). Quantities est. from Roberts (2012a,2012c). Activities est. from Turk (2012b).Allied Signal/Honeywell Calcium Fluoride 1996-1997 2,343 2,343 989 0.95 23800 22.75 Date range est. from Denison (2011) and Roberts (2012c). Quantities est. from Roberts (2012a,2012c). Activities est. from Turk (2012b).
Cameco Phosph. regen. product 1996-1999 557 557 2.70 0.00 2.10 0.00 Date range est. from Denison (2011) and Roberts (2012c). Quantities est. from Roberts (2012a,2012c). Activities est. from Turk (2012b).
Cameco Calcined product 1996-1999 2,197 2,197 1040 0.93 9170 8.22 Date range est. from Denison (2011) and Roberts (2012c). Quantities est. from Roberts (2012a,2012c). Activities est. from Turk (2012b).
Allied Signal KOH solution recovery 1996-1999 1,526 1,526 989 0.62 0.00 0.00 Date range est. from Denison (2011) and Roberts (2012c). Quantities est. from Roberts (2012a,2012c). Activities est. from Harold (2012a) and Turk (2012b).
Rhone-Poulenc Uranyl nitrate hexahydrate 1996-1997 17 17 156 0.00 2550 0.02 Date range est. from Denison (2011) and Roberts (2012c). Quantities est. from Roberts (2012a,2012c). Activities est. from Harold (2012a) and Turk (2012b).
Cameco UF4 with filter ash 1996-1999 10 10 156 0.00 2550 0.01 Date range est. from Denison (2011) and Roberts (2012c). Quantities est. from Roberts (2012a,2012c). Activities est. from Turk (2012b).Nev. Test Site Cotter Concentrate 1996-1997 420 420 3590 0.62 585000 100.26 Date range est. from Denison (2011) and Roberts (2012c). Quantities and activities est. from Roberts (2012a,2012c). Molycorp 2002-2003, 2007 11,689 11,689 38.6 0.18 268.0 1.28 Date range est. from Denison (2011) and Roberts (2012c). Quantities est. from Roberts (2012a,2012c). Activities est. from Turk (2012b).Total Tons 2,450,679 Weighted Ave. 606 1048
Notes:cEstimated from total tons of tailings to Cell 2 and capacity of Cell 3 from Denison (2009), Attachment E. Material placed before 2009 was placed in Cells 2 and 3 (Roberts, 2012c).
bValues for ores estimated using method in NRC Reg. Guide 3.64 (1989) of multiplying the ore grade by 2812 pCi/g.cValues for thorium estimated as Ra-226 values.
References:
Denison Mines USA Corporation (Denison), 2009. Reclamation Plan, White Mesa Mill, Blanding Utah, Revision 4.0, November.
Denison Mines USA Corporation (Denison), 2011. Reclamation Plan, White Mesa Mill, Blanding Utah, Revision 5.0, September.
Roberts, H., 2012a. Electronic communication including files "InvThNov00.xls and Inventory Umass in tails.xls" from Harold Roberts, Denison Mines (USA) Corp., to Melanie Davis, MWH Americas, Inc., July 20.
Roberts, H., 2012b. Personal communication from Harold Roberts, Denison Mines (USA) Corp., to Melanie Davis, MWH Americas, Inc., June 21.
Roberts, H., 2012c. Electronic communication including file "Alternate Feed Tons.pdf" and personal communication from Harold Roberts, Denison Mines (USA) Corp., to Melanie Davis, MWH Americas, Inc., July 24.
Turk, D., 2012a. Electronic communication including file "Ore Numbers.pdf" from David Turk, Denison Mines (USA) Corp., to Melanie Davis, MWH Americas, Inc., June 8.
Turk, D., 2012b. Electronic communication including file "DAC s Calculations 2012_rev6-29-12" from David Turk, Denison Mines (USA) Corp., to Melanie Davis, MWH Americas, Inc., June 29.
Impoundment Inventory Summary_7Aug2012_MWH:Cell 3
Energy Fuels Resources (USA) Inc.
Estimation of Cell 4A and 4B Ra-226 and Th-230 Activity Concentrations for Tailings
Material Category/Location Origin/ Description Dates
Total Mass Ore/Alt. Feed
Processeda
(tons)%U3O8
Ra-226 Activity
Conc.b
(pCi/g)
Th-230 Activity
Conc.c
(pCi/g) Reference/Comments
Processed Ores
Pandora 2009-2011 151,145 0.218 613.0 613.0 Data provided from D. Turk (2012a)
Daneros 2010-2011 71,287 0.269 756.4 756.4 Data provided from D. Turk (2012a)
Beaver 2010-2011 90,280 0.174 489.3 489.3 Data provided from D. Turk (2012a)Arizona 1 2010-2011 41,863 0.608 1709.7 1709.7 Data provided from D. Turk (2012a)
Sunday 2009-2011 8,185 0.178 500.5 500.5 Data provided from D. Turk (2012a)
West Sunday 2009-2010 26,131 0.157 441.5 441.5 Data provided from D. Turk (2012a)
Topaz 2009-2010 8,123 0.128 359.9 359.9 Data provided from D. Turk (2012a)
St. Jude 2009-2010 14,432 0.167 469.6 469.6 Data provided from D. Turk (2012a)Tony M 2009 115,074 0.131 368.4 368.4 Data provided from D. Turk (2012a)
Dawn Mining 2009-2010 2,875 0.456 1282.3 1282.3 Data provided from D. Turk (2012a)
Carnation 2009-2010 5,584 0.166 466.8 466.8 Data provided from D. Turk (2012a)
Purchased Ore 2010-2011 18,008 0.146 410.6 410.6 Data provided from D. Turk (2012a)
Humbug Cressler 2011 118 0.044 123.7 123.7 Data provided from D. Turk (2012a)Alternate Feeds
Cabot Tantalum residues 2011 8,700 772 118 Date range est. from Denison (2011) and Roberts (2012c). Quantities est. from Roberts (2012a,2012c). Activities est. from Turk (2012b).
Cameco UF4 2009-2010 462 156 2550 Date range est. from Denison (2011) and Roberts (2012c). Quantities est. from Roberts (2012a,2012c). Activities est. from Turk (2012b).
Allied Signal/Honeywell Calcium Fluoride 2011 1,969 989 23800 Date range est. from Denison (2011) and Roberts (2012c). Quantities est. from Roberts (2012a,2012c). Activities est. from Turk (2012b).
FMRI (Fansteel) 2011 1,369 236 4.9 Date range est. from Denison (2011) and Roberts (2012c). Quantities est. from Roberts (2012a,2012c). Activities est. from Turk (2012b).
Weighted Ave. 617 695
Notes:cCurrent tailings in Cell 4A and future tailings to Cell 4A and 4B are projected to be from ores and alternative feeds similar to those processed after 2008 (Roberts, 2012c).bValues for ores estimated using method in NRC Reg. Guide 3.64 (1989) of multiplying the ore grade by 2812 pCi/g.cValues for thorium estimated as Ra-226 values.
References:
Denison Mines USA Corporation (Denison), 2009. Reclamation Plan, White Mesa Mill, Blanding Utah, Revision 4.0, November.
Denison Mines USA Corporation (Denison), 2011. Reclamation Plan, White Mesa Mill, Blanding Utah, Revision 5.0, September.
Roberts, H., 2012a. Electronic communication including files "InvThNov00.xls and Inventory Umass in tails.xls" from Harold Roberts, Denison Mines (USA) Corp., to Melanie Davis, MWH Americas, Inc., July 20.
Roberts, H., 2012b. Personal communication from Harold Roberts, Denison Mines (USA) Corp., to Melanie Davis, MWH Americas, Inc., June 21.
Roberts, H., 2012c. Electronic communication including file "Alternate Feed Tons.pdf" and personal communication from Harold Roberts, Denison Mines (USA) Corp., to Melanie Davis, MWH Americas, Inc., July 24.
Turk, D., 2012a. Electronic communication including file "Ore Numbers.pdf" from David Turk, Denison Mines (USA) Corp., to Melanie Davis, MWH Americas, Inc., June 8.
Turk, D., 2012b. Electronic communication including file "DAC s Calculations 2012_rev6-29-12" from David Turk, Denison Mines (USA) Corp., to Melanie Davis, MWH Americas, Inc., June 29.
Impoundment Inventory Summary_7Aug2012_MWH:Cells 4A‐B
Energy Fuels Resources (USA) Inc. White Mesa Mill
Tailings Cell 2
Calculation of Ra-226 Concentrations Due to Future Decay of Th-230
The RA-226 concentration at various times in the future depends on both the decay of the Ra-226 currently
present and the ingrowth from Th-230. The Ra-226 decays with a half-life of 1602 years. The ingrowth is also
a function of the Ra-226 half-life (1602 years) and the Th-230 half-life (77,000 years).
A (Ra-226) at a time t (years) = [A (Ra-226) at t=0][exp(-0.693t/1602 years)]
A (Ra-226 from decay of Th-230 at time t (years)) = [A (Th-230)][1-exp(-0.693t/1602 years)][exp(-0.693t/77,000 years)]
Residual Ra-226 at time t
Time exp (-0.693t/1602) Initial Ra-226 Concentration (pCi/g) Ra-226 Concentration at time t (pCi/g)
(years) Cell 2 Cell 2
0 1.000 923 923
100 0.958 923 884
200 0.917 923 847
500 0.805 923 743
1000 0.649 923 599
Ra-226 Concentration from Ingrowth Due to Decay of Th-230
Time exp (-0.693t/1602) Initial Th-230 Concentration (pCi/g) Ra-226 Concentration at time t (pCi/g) exp (-0.693t/77000)
(years) S.I. S.I.
0 1.000 923 0 1.000
100 0.958 923 39 0.999
200 0.917 923 76 0.998
500 0.805 923 179 0.996
1000 0.649 923 321 0.991
Total Ra-226 Concentration at Time t (original Ra-226 and Ra-226 from Th-230 decay)
Time Total Ra-226 Concentration (pCi/g)
(years) avg. S.I.
0 923
100 923
200 923
500 922
1000 920
Ra‐226 Ingrowth Calcs_MWH:Ra‐226 Ingrowth (Cell 2)8/10/2012
Energy Fuels Resources (USA) Inc. White Mesa Mill
Tailings Cell 3
Calculation of Ra-226 Concentrations Due to Future Decay of Th-230
The RA-226 concentration at various times in the future depends on both the decay of the Ra-226 currently
present and the ingrowth from Th-230. The Ra-226 decays with a half-life of 1602 years. The ingrowth is also
a function of the Ra-226 half-life (1602 years) and the Th-230 half-life (77,000 years).
A (Ra-226) at a time t (years) = [A (Ra-226) at t=0][exp(-0.693t/1602 years)]
A (Ra-226 from decay of Th-230 at time t (years)) = [A (Th-230)][1-exp(-0.693t/1602 years)][exp(-0.693t/77,000 years)]
Residual Ra-226 at time t
Time exp (-0.693t/1602) Initial Ra-226 Concentration (pCi/g) Ra-226 Concentration at time t (pCi/g)
(years) Cell 3 Cell 3
0 1.000 606 606
100 0.958 606 580
200 0.917 606 556
500 0.805 606 488
1000 0.649 606 393
Ra-226 Concentration from Ingrowth Due to Decay of Th-230
Time exp (-0.693t/1602) Initial Th-230 Concentration (pCi/g) Ra-226 Concentration at time t (pCi/g) exp (-0.693t/77000)
(years) S.I. S.I.
0 1.000 1048 0 1.000
100 0.958 1048 44 0.999
200 0.917 1048 87 0.998
500 0.805 1048 203 0.996
1000 0.649 1048 365 0.991
Total Ra-226 Concentration at Time t (original Ra-226 and Ra-226 from Th-230 decay)
Time Total Ra-226 Concentration (pCi/g)
(years) avg. S.I.
0 606
100 625
200 642
500 691
1000 758
Ra‐226 Ingrowth Calcs_MWH:Ra‐226 Ingrowth (Cell 3)8/10/2012
Energy Fuels Resources (USA) Inc. White Mesa Mill
Tailings Cells 4A/B
Calculation of Ra-226 Concentrations Due to Future Decay of Th-230
The RA-226 concentration at various times in the future depends on both the decay of the Ra-226 currently
present and the ingrowth from Th-230. The Ra-226 decays with a half-life of 1602 years. The ingrowth is also
a function of the Ra-226 half-life (1602 years) and the Th-230 half-life (77,000 years).
A (Ra-226) at a time t (years) = [A (Ra-226) at t=0][exp(-0.693t/1602 years)]
A (Ra-226 from decay of Th-230 at time t (years)) = [A (Th-230)][1-exp(-0.693t/1602 years)][exp(-0.693t/77,000 years)]
Residual Ra-226 at time t
Time exp (-0.693t/1602) Initial Ra-226 Concentration (pCi/g) Ra-226 Concentration at time t (pCi/g)
(years) Cell 4A/B Cell 4A/B
0 1.000 617 617
100 0.958 617 591
200 0.917 617 566
500 0.805 617 497
1000 0.649 617 400
Ra-226 Concentration from Ingrowth Due to Decay of Th-230
Time exp (-0.693t/1602) Initial Th-230 Concentration (pCi/g) Ra-226 Concentration at time t (pCi/g) exp (-0.693t/77000)
(years) S.I. S.I.
0 1.000 695 0 1.000
100 0.958 695 29 0.999
200 0.917 695 57 0.998
500 0.805 695 135 0.996
1000 0.649 695 242 0.991
Total Ra-226 Concentration at Time t (original Ra-226 and Ra-226 from Th-230 decay)
Time Total Ra-226 Concentration (pCi/g)
(years) avg. S.I.
0 617
100 620
200 623
500 632
1000 642
Ra‐226 Ingrowth Calcs_MWH:Ra‐226 Ingrowth (Cells 4A‐B)8/10/2012

ATTACHMENT C.2
COVER MATERIAL PARAMETERS ESTIMATION TABLE
ENERGY FUELS RESOURCES (USA) INC. WHITE MESA MILL
Summary of Laboratory Testing Results for Borrow Stockpiles
Borrow Stockpile ID
Estimated 
Stockpile 
Volume1 (cy)
Field 
Investigation 
Date Material Description USCS Sample ID
Sample Depth 
(ft)
Gravimetric 
Water Content 
(%)
Atterberg Limits2 
LL/PL/PI (%) PI
Specific 
Gravity % Gravel %Sand %Silt % Clay % Fines
Max. 
Density 
(pcf)
Opt. 
Moist. 
Cont. (%)
Ksat 
(cm/s)
15bar 
Grav. 
Water 
Content 
(%) Soil Group4
E1 15,900 Apr‐2012 Topsoil (Sandy Silty Clay) CL‐ML E1‐A0 ‐ 3 ‐‐23/18/5 5 2.61 0 41 43 16 59 118 11 1.3 x 10‐4 5.2 Topsoil
SM A 5 4.5 NP NP ‐‐0.5 77.1 13.5 8.9 22 B
SC B 12 5.7 23.3/11.2/12.1 12.1 2.64 13.1 50.3 22.6 14.0 37 U
E3 16,800 Apr‐2012 Clay with Sand CH E3‐A0 ‐ 3 ‐‐54/24/30 30 2.53 0 23 29 48 77 105 19 9.5 x 10‐5 13.6 F
E4 66,600 Oct‐2010 Sandy Clay CL A 5 8.6 30.3/14.4/15.9 15.9 ‐‐0.0 41.2 39.1 19.7 59 U
Oct‐2010 Sandy Clay CL A 6 9.0 33.2/14.3/18.9 18.9 ‐‐0.0 35.5 38.1 26.4 65 F
Apr‐2012 Clay with Sand CH E5‐B0 ‐ 3 ‐‐51/24/27 27 2.56 2 15 36 47 83 F
E6 100,700 Oct‐2010 Clay CL A 5 14.4 40.2/15.8/24.4 24.4 2.74 0.1 17.7 49.5 32.7 82 F
E7 74,900 Oct‐2010 Sandy Clay CL A 6 5.7 26.2/16.3/9.9 9.9 ‐‐0.0 30.2 56.1 13.7 70 U
Oct‐2010 Sandy Clay CL A 2 7.4 23.0/12.0/11.0 11.0 ‐‐0.0 47.0 36.9 16.1 53 U
Apr‐2012 Gravel with Clay and Sand GW‐GC E8‐B0 ‐ 4 ‐‐27/16/11 11 2.63 40.0 31.0 18.0 11.0 29 125 11 6.0 B
W1 85,700 Oct‐2010 Sandy Clay CL A 5 8.8 32.1/14.5/17.6 17.6 ‐‐0.0 40.6 37.6 21.8 59 U
Oct‐2010 Sandy Clay CL A surface 8.5 28.1/13.1/15.0 15.0 ‐‐0.2 41.5 42.5 15.8 58 U
Apr‐2012 Clayey Sand with Gravel SC W2‐A0 ‐ 3 ‐‐24/14/10 10 2.62 30 45 15.0 10.0 25 6.9 B
Apr‐2012 Silty Clayey Sand with Gravel SC‐SM W2‐B0 ‐ 5 ‐‐18/13/5 5 2.63 41 45 9.0 5.0 14 128 9 1.5 x 10‐3 3.5 B
W3 84,800 Oct‐2010 Topsoil (Sandy Silty Clay) CL‐ML A surface 4.3 20.9/16.2/4.7 4.7 ‐‐0.2 44.2 39.2 16.4 56 Topsoil
Oct‐2010 Topsoil  (Sandy Silt) ML A 5 5.3 21.9/18.0/3.9 3.9 ‐‐0.0 32.6 54.3 13.1 67 Topsoil
Apr‐2012 Topsoil (Sandy Silty Clay) CL‐ML W4‐B0 ‐ 4 ‐‐26/19/7 7 2.60 0 38 44 18 62 Topsoil
Sandy Clay CL W5‐A0 ‐ 4 ‐‐27/18/9 9 2.61 1 49 32 18 50 7.0 U
Clayey Sand with Gravel SC W5‐B0 ‐ 4 ‐‐24/15/9 9 2.63 29 44 19 8 27 122 10 1.1 x 10‐3 3.6 B
W6 93,400 Oct‐2010 Topsoil (Sandy Silty Clay) CL‐ML A surface 3.3 23.1/16.5/6.6 6.6 ‐‐0.0 34.3 51.8 13.9 66 Topsoil
W7 39,500 Oct‐2010 Sandy Clay CL A 5 8.7 28.0/10.6/17.3 17.3 2.67 0.0 43.8 43.1 13.1 56 U
Silty Sand with Gravel SM W8‐A0 ‐ 3 ‐‐NP NP 2.64 35 51 9 5 14 117 13 1.2 x 10‐3 5.0 B
Silty Sand with Gravel SM W8‐B0 ‐ 4 ‐‐NP NP 2.66 32 40 18 10 28 6.4 B
Oct‐2010 Sandy Clay CL A surface 4.4 25.9/12.3/13.5 13.5 ‐‐0.0 37.4 45.2 17.4 63 U
Apr‐2012 Sandy Clay CL W9‐B0 ‐ 4 ‐‐28/16/12 12 2.63 6 44 35 15 50 115 14 4.1 x 10‐4 7.7 U
Estimation of Cover Material Properties Used in Model
Soil Group4 Volume (cy) Total Vol (cy) Percent  of Total Volume 
Ave. Max. 
Dry Density 
(pcf)
Ave. Specific 
Gravity 
Ave. 15bar 
Grav. Water 
Content (%)
Group B 1,728,308         3,596,621       48.1% 123 2.64 5.2
Group U 1,682,013         3,596,621       46.8% 115 2.64 7.3
Group F 186,300             3,596,621       5.2% 105 2.61 13.6
118 2.63 6.7
Notes:  
1.  Volumes estimated using 2009 topography and assuming a relatively flat bottom surface, except for stockpiles W5, W8 and W9.  The volumes for stockpiles  W8 and W9 were estimated by comparing the 2011 versus 2009 topography.  
The volume for stockpile W5 was estimated using a combination of both methods.  
2.  LL = Liquid Limt, PL = Plastic Limit, PI = Plasticity Index (PI = LL‐PL)
3.  Gravel = 4.75 mm to 75 mm, Sand = 0.075 mm to 4.75 mm, Fines:  Silt = 0 .075 mm to 0.002 mm, Clay = less than 0.002 mm
4.  Group B (broadly graded), Group U (uniformly graded), and Group F (fine textured) based on evaluation of gradations and Benson (2012).   See Attachment B of EFRI (2012) for gradations and laboratory reports.  
References:
Benson, C., 2012.  Electronic communication from Craig Benson, University of Wisconsin‐Madison, to Melanie Davis, MWH Americas, Inc., regarding evaluation of gradations performed for potential cover soils for White Mesa, May 20.  
Energy Fuels Resouces (USA) Inc. (EFRI), 2012.  Response to Interrogatories ‐ Round 1 for Reclamation Plan, revision 5.0., March 2012.  August 15.  
Weighted Ave. 
W9 60,250
W5 2,001,160 Apr‐2012
W8 178,411 Apr‐2012
E8 227,300
W2 584,500
W4 90,000
E2 92,000 Oct‐2010 Silty Sand/Clayey Sand 
E5 68,800
White Mesa_2010 and 2012 lab results_8‐6‐12:Cover Mat Props in Model

ATTACHMENT C.3
RADON MODEL OUTPUT
-----*****! RADON !*****-----

Version 1.2 - MAY 22, 1989 - G.F. Birchard tel.# [phone]
U.S. Nuclear Regulatory Commission Office of Research

RADON FLUX, CONCENTRATION AND TAILINGS COVER THICKNESS
ARE CALCULATED FOR MULTIPLE LAYERS

OUTPUT FILE: Cell2ts

DESCRIPTION: Cell 2 Cover (topsoil on surface)

CONSTANTS

RADON DECAY CONSTANT .0000021 s^-1
RADON WATER/AIR PARTITION COEFFICIENT .26
DEFAULT SPECIFIC GRAVITY OF COVER & TAILINGS 2.65

GENERAL INPUT PARAMETERS

LAYERS OF COVER AND TAILINGS 5
NO LIMIT ON RADON FLUX
LAYER THICKNESS NOT OPTIMIZED
DEFAULT SURFACE RADON CONCENTRATION 0 pCi l^-1
SURFACE FLUX PRECISION .001 pCi m^-2 s^-1

LAYER INPUT PARAMETERS

LAYER 1 Tailings

THICKNESS 500 cm
POROSITY .45
MEASURED MASS DENSITY 1.5 g cm^-3
MEASURED RADIUM ACTIVITY 923 pCi/g^-1
MEASURED EMANATION COEFFICIENT .2
CALCULATED SOURCE TERM CONCENTRATION 1.292D-03 pCi cm^-3 s^-1
WEIGHT % MOISTURE 6 %
MOISTURE SATURATION FRACTION .200
MEASURED DIFFUSION COEFFICIENT .0288 cm^2 s^-1

LAYER 2 Random Fill

THICKNESS 76 cm
POROSITY .43
MEASURED MASS DENSITY 1.5 g cm^-3
MEASURED RADIUM ACTIVITY 0 pCi/g^-1
MEASURED EMANATION COEFFICIENT .35
CALCULATED SOURCE TERM CONCENTRATION 0.000D+00 pCi cm^-3 s^-1
WEIGHT % MOISTURE 6.7 %
MOISTURE SATURATION FRACTION .234
MEASURED DIFFUSION COEFFICIENT .026 cm^2 s^-1

LAYER 3 Compacted Random Fill

THICKNESS 122 cm
POROSITY .32
MEASURED MASS DENSITY 1.8 g cm^-3
MEASURED RADIUM ACTIVITY 0 pCi/g^-1
MEASURED EMANATION COEFFICIENT .35
CALCULATED SOURCE TERM CONCENTRATION 0.000D+00 pCi cm^-3 s^-1
WEIGHT % MOISTURE 6.7 %
MOISTURE SATURATION FRACTION .377
MEASURED DIFFUSION COEFFICIENT .016 cm^2 s^-1

LAYER 4 ET Cover

THICKNESS 107 cm
POROSITY .39
MEASURED MASS DENSITY 1.6 g cm^-3
MEASURED RADIUM ACTIVITY 0 pCi/g^-1
MEASURED EMANATION COEFFICIENT .35
CALCULATED SOURCE TERM CONCENTRATION 0.000D+00 pCi cm^-3 s^-1
WEIGHT % MOISTURE 6.7 %
MOISTURE SATURATION FRACTION .275
MEASURED DIFFUSION COEFFICIENT .0225 cm^2 s^-1

LAYER 5 Topsoil

THICKNESS 15 cm
POROSITY .38
MEASURED MASS DENSITY 1.6 g cm^-3
MEASURED RADIUM ACTIVITY 0 pCi/g^-1
MEASURED EMANATION COEFFICIENT .35
CALCULATED SOURCE TERM CONCENTRATION 0.000D+00 pCi cm^-3 s^-1
WEIGHT % MOISTURE 5.2 %
MOISTURE SATURATION FRACTION .219
MEASURED DIFFUSION COEFFICIENT .0254 cm^2 s^-1

DATA SENT TO THE FILE `RNDATA' ON DRIVE A:

N F01 CN1 ICOST CRITJ ACC
5 -1.000D+00 0.000D+00 0 0.000D+00 1.000D-03

LAYER DX D P Q XMS RHO
1 5.000D+02 2.880D-02 4.500D-01 1.292D-03 2.000D-01 1.500
2 7.600D+01 2.600D-02 4.300D-01 0.000D+00 2.337D-01 1.500
3 1.220D+02 1.600D-02 3.200D-01 0.000D+00 3.769D-01 1.800
4 1.070D+02 2.250D-02 3.900D-01 0.000D+00 2.749D-01 1.600
5 1.500D+01 2.540D-02 3.800D-01 0.000D+00 2.189D-01 1.600

BARE SOURCE FLUX FROM LAYER 1: 6.713D+02 pCi m^-2 s^-1

RESULTS OF THE RADON DIFFUSION CALCULATIONS

LAYER THICKNESS EXIT FLUX EXIT CONC.
(cm) (pCi m^-2 s^-1) (pCi l^-1)

1 5.000D+02 2.884D+02 3.461D+05
2 7.600D+01 1.094D+02 2.058D+05
3 1.220D+02 3.505D+01 3.071D+04
4 1.070D+02 2.018D+01 2.963D+03
5 1.500D+01 2.000D+01 0.000D+00

-----*****! RADON !*****-----

Version 1.2 - MAY 22, 1989 - G.F. Birchard tel.# [phone]
U.S. Nuclear Regulatory Commission Office of Research

RADON FLUX, CONCENTRATION AND TAILINGS COVER THICKNESS
ARE CALCULATED FOR MULTIPLE LAYERS

OUTPUT FILE: Cell2rm

DESCRIPTION: Cell 2 Cover (rock mulch on surface)

CONSTANTS

RADON DECAY CONSTANT .0000021 s^-1
RADON WATER/AIR PARTITION COEFFICIENT .26
DEFAULT SPECIFIC GRAVITY OF COVER & TAILINGS 2.65

GENERAL INPUT PARAMETERS

LAYERS OF COVER AND TAILINGS 5
NO LIMIT ON RADON FLUX
LAYER THICKNESS NOT OPTIMIZED
DEFAULT SURFACE RADON CONCENTRATION 0 pCi l^-1
SURFACE FLUX PRECISION .001 pCi m^-2 s^-1

LAYER INPUT PARAMETERS

LAYER 1 Tailings

THICKNESS 500 cm
POROSITY .45
MEASURED MASS DENSITY 1.5 g cm^-3
MEASURED RADIUM ACTIVITY 923 pCi/g^-1
MEASURED EMANATION COEFFICIENT .2
CALCULATED SOURCE TERM CONCENTRATION 1.292D-03 pCi cm^-3 s^-1
WEIGHT % MOISTURE 6 %
MOISTURE SATURATION FRACTION .200
MEASURED DIFFUSION COEFFICIENT .0288 cm^2 s^-1

LAYER 2 Random Fill

THICKNESS 76 cm
POROSITY .43
MEASURED MASS DENSITY 1.5 g cm^-3
MEASURED RADIUM ACTIVITY 0 pCi/g^-1
MEASURED EMANATION COEFFICIENT .35
CALCULATED SOURCE TERM CONCENTRATION 0.000D+00 pCi cm^-3 s^-1
WEIGHT % MOISTURE 6.7 %
MOISTURE SATURATION FRACTION .234
MEASURED DIFFUSION COEFFICIENT .026 cm^2 s^-1

LAYER 3 Compacted Random Fill

THICKNESS 122 cm
POROSITY .32
MEASURED MASS DENSITY 1.8 g cm^-3
MEASURED RADIUM ACTIVITY 0 pCi/g^-1
MEASURED EMANATION COEFFICIENT .35
CALCULATED SOURCE TERM CONCENTRATION 0.000D+00 pCi cm^-3 s^-1
WEIGHT % MOISTURE 6.7 %
MOISTURE SATURATION FRACTION .377
MEASURED DIFFUSION COEFFICIENT .016 cm^2 s^-1

LAYER 4 ET Cover

THICKNESS 107 cm
POROSITY .39
MEASURED MASS DENSITY 1.6 g cm^-3
MEASURED RADIUM ACTIVITY 0 pCi/g^-1
MEASURED EMANATION COEFFICIENT .35
CALCULATED SOURCE TERM CONCENTRATION 0.000D+00 pCi cm^-3 s^-1
WEIGHT % MOISTURE 6.7 %
MOISTURE SATURATION FRACTION .275
MEASURED DIFFUSION COEFFICIENT .0225 cm^2 s^-1

LAYER 5 Rock Mulch

THICKNESS 15 cm
POROSITY .35
MEASURED MASS DENSITY 1.7 g cm^-3
MEASURED RADIUM ACTIVITY 0 pCi/g^-1
MEASURED EMANATION COEFFICIENT .35
CALCULATED SOURCE TERM CONCENTRATION 0.000D+00 pCi cm^-3 s^-1
WEIGHT % MOISTURE 4 %
MOISTURE SATURATION FRACTION .194
MEASURED DIFFUSION COEFFICIENT .0256 cm^2 s^-1

DATA SENT TO THE FILE `RNDATA' ON DRIVE A:

N F01 CN1 ICOST CRITJ ACC
5 -1.000D+00 0.000D+00 0 0.000D+00 1.000D-03

LAYER DX D P Q XMS RHO
1 5.000D+02 2.880D-02 4.500D-01 1.292D-03 2.000D-01 1.500
2 7.600D+01 2.600D-02 4.300D-01 0.000D+00 2.337D-01 1.500
3 1.220D+02 1.600D-02 3.200D-01 0.000D+00 3.769D-01 1.800
4 1.070D+02 2.250D-02 3.900D-01 0.000D+00 2.749D-01 1.600
5 1.500D+01 2.560D-02 3.500D-01 0.000D+00 1.943D-01 1.700

BARE SOURCE FLUX FROM LAYER 1: 6.713D+02 pCi m^-2 s^-1

RESULTS OF THE RADON DIFFUSION CALCULATIONS

LAYER THICKNESS EXIT FLUX EXIT CONC.
(cm) (pCi m^-2 s^-1) (pCi l^-1)

1 5.000D+02 2.884D+02 3.461D+05
2 7.600D+01 1.094D+02 2.058D+05
3 1.220D+02 3.501D+01 3.077D+04
4 1.070D+02 2.007D+01 3.107D+03
5 1.500D+01 1.988D+01 0.000D+00

-----*****! RADON !*****-----

Version 1.2 - MAY 22, 1989 - G.F. Birchard tel.# [phone]
U.S. Nuclear Regulatory Commission Office of Research

RADON FLUX, CONCENTRATION AND TAILINGS COVER THICKNESS
ARE CALCULATED FOR MULTIPLE LAYERS

OUTPUT FILE: Cell3ts

DESCRIPTION: Cell 3 Cover (topsoil on surface)

CONSTANTS

RADON DECAY CONSTANT .0000021 s^-1
RADON WATER/AIR PARTITION COEFFICIENT .26
DEFAULT SPECIFIC GRAVITY OF COVER & TAILINGS 2.65

GENERAL INPUT PARAMETERS

LAYERS OF COVER AND TAILINGS 5
NO LIMIT ON RADON FLUX
LAYER THICKNESS NOT OPTIMIZED
DEFAULT SURFACE RADON CONCENTRATION 0 pCi l^-1
SURFACE FLUX PRECISION .001 pCi m^-2 s^-1

LAYER INPUT PARAMETERS

LAYER 1 Tailings

THICKNESS 500 cm
POROSITY .45
MEASURED MASS DENSITY 1.5 g cm^-3
MEASURED RADIUM ACTIVITY 758 pCi/g^-1
MEASURED EMANATION COEFFICIENT .2
CALCULATED SOURCE TERM CONCENTRATION 1.061D-03 pCi cm^-3 s^-1
WEIGHT % MOISTURE 6 %
MOISTURE SATURATION FRACTION .200
MEASURED DIFFUSION COEFFICIENT .0288 cm^2 s^-1

LAYER 2 Random Fill

THICKNESS 76 cm
POROSITY .43
MEASURED MASS DENSITY 1.5 g cm^-3
MEASURED RADIUM ACTIVITY 0 pCi/g^-1
MEASURED EMANATION COEFFICIENT .35
CALCULATED SOURCE TERM CONCENTRATION 0.000D+00 pCi cm^-3 s^-1
WEIGHT % MOISTURE 6.7 %
MOISTURE SATURATION FRACTION .234
MEASURED DIFFUSION COEFFICIENT .026 cm^2 s^-1

LAYER 3 Compacted Random Fill

THICKNESS 107 cm
POROSITY .32
MEASURED MASS DENSITY 1.8 g cm^-3
MEASURED RADIUM ACTIVITY 0 pCi/g^-1
MEASURED EMANATION COEFFICIENT .35
CALCULATED SOURCE TERM CONCENTRATION 0.000D+00 pCi cm^-3 s^-1
WEIGHT % MOISTURE 6.7 %
MOISTURE SATURATION FRACTION .377
MEASURED DIFFUSION COEFFICIENT .016 cm^2 s^-1

LAYER 4 ET Cover

THICKNESS 107 cm
POROSITY .39
MEASURED MASS DENSITY 1.6 g cm^-3
MEASURED RADIUM ACTIVITY 0 pCi/g^-1
MEASURED EMANATION COEFFICIENT .35
CALCULATED SOURCE TERM CONCENTRATION 0.000D+00 pCi cm^-3 s^-1
WEIGHT % MOISTURE 6.7 %
MOISTURE SATURATION FRACTION .275
MEASURED DIFFUSION COEFFICIENT .0225 cm^2 s^-1

LAYER 5 Topsoil

THICKNESS 15 cm
POROSITY .38
MEASURED MASS DENSITY 1.6 g cm^-3
MEASURED RADIUM ACTIVITY 0 pCi/g^-1
MEASURED EMANATION COEFFICIENT .35
CALCULATED SOURCE TERM CONCENTRATION 0.000D+00 pCi cm^-3 s^-1
WEIGHT % MOISTURE 5.2 %
MOISTURE SATURATION FRACTION .219
MEASURED DIFFUSION COEFFICIENT .0254 cm^2 s^-1

DATA SENT TO THE FILE `RNDATA' ON DRIVE A:

N F01 CN1 ICOST CRITJ ACC
5 -1.000D+00 0.000D+00 0 0.000D+00 1.000D-03

LAYER DX D P Q XMS RHO
1 5.000D+02 2.880D-02 4.500D-01 1.061D-03 2.000D-01 1.500
2 7.600D+01 2.600D-02 4.300D-01 0.000D+00 2.337D-01 1.500
3 1.070D+02 1.600D-02 3.200D-01 0.000D+00 3.769D-01 1.800
4 1.070D+02 2.250D-02 3.900D-01 0.000D+00 2.749D-01 1.600
5 1.500D+01 2.540D-02 3.800D-01 0.000D+00 2.189D-01 1.600

BARE SOURCE FLUX FROM LAYER 1: 5.513D+02 pCi m^-2 s^-1

RESULTS OF THE RADON DIFFUSION CALCULATIONS

LAYER THICKNESS EXIT FLUX EXIT CONC.
(cm) (pCi m^-2 s^-1) (pCi l^-1)

1 5.000D+02 2.374D+02 2.838D+05
2 7.600D+01 9.084D+01 1.681D+05
3 1.070D+02 3.427D+01 3.003D+04
4 1.070D+02 1.974D+01 2.898D+03
5 1.500D+01 1.956D+01 0.000D+00
-----*****! RADON !*****-----

Version 1.2 - MAY 22, 1989 - G.F. Birchard tel.# [phone]
U.S. Nuclear Regulatory Commission Office of Research

RADON FLUX, CONCENTRATION AND TAILINGS COVER THICKNESS
ARE CALCULATED FOR MULTIPLE LAYERS

OUTPUT FILE: Cell3rm

DESCRIPTION: Cell 3 Cover (rock mulch on surface)

CONSTANTS

RADON DECAY CONSTANT .0000021 s^-1
RADON WATER/AIR PARTITION COEFFICIENT .26
DEFAULT SPECIFIC GRAVITY OF COVER & TAILINGS 2.65

GENERAL INPUT PARAMETERS

LAYERS OF COVER AND TAILINGS 5
NO LIMIT ON RADON FLUX
LAYER THICKNESS NOT OPTIMIZED
DEFAULT SURFACE RADON CONCENTRATION 0 pCi l^-1
SURFACE FLUX PRECISION .001 pCi m^-2 s^-1

LAYER INPUT PARAMETERS

LAYER 1 Tailings

THICKNESS 500 cm
POROSITY .45
MEASURED MASS DENSITY 1.5 g cm^-3
MEASURED RADIUM ACTIVITY 758 pCi/g^-1
MEASURED EMANATION COEFFICIENT .2
CALCULATED SOURCE TERM CONCENTRATION 1.061D-03 pCi cm^-3 s^-1
WEIGHT % MOISTURE 6 %
MOISTURE SATURATION FRACTION .200
MEASURED DIFFUSION COEFFICIENT .0288 cm^2 s^-1

LAYER 2 Random Fill

THICKNESS 76 cm
POROSITY .43
MEASURED MASS DENSITY 1.5 g cm^-3
MEASURED RADIUM ACTIVITY 0 pCi/g^-1
MEASURED EMANATION COEFFICIENT .35
CALCULATED SOURCE TERM CONCENTRATION 0.000D+00 pCi cm^-3 s^-1
WEIGHT % MOISTURE 6.7 %
MOISTURE SATURATION FRACTION .234
MEASURED DIFFUSION COEFFICIENT .026 cm^2 s^-1

LAYER 3 Compacted Random Fill

THICKNESS 107 cm
POROSITY .32
MEASURED MASS DENSITY 1.8 g cm^-3
MEASURED RADIUM ACTIVITY 0 pCi/g^-1
MEASURED EMANATION COEFFICIENT .35
CALCULATED SOURCE TERM CONCENTRATION 0.000D+00 pCi cm^-3 s^-1
WEIGHT % MOISTURE 6.7 %
MOISTURE SATURATION FRACTION .377
MEASURED DIFFUSION COEFFICIENT .016 cm^2 s^-1

LAYER 4 ET Cover

THICKNESS 107 cm
POROSITY .39
MEASURED MASS DENSITY 1.6 g cm^-3
MEASURED RADIUM ACTIVITY 0 pCi/g^-1
MEASURED EMANATION COEFFICIENT .35
CALCULATED SOURCE TERM CONCENTRATION 0.000D+00 pCi cm^-3 s^-1
WEIGHT % MOISTURE 6.7 %
MOISTURE SATURATION FRACTION .275
MEASURED DIFFUSION COEFFICIENT .0225 cm^2 s^-1

LAYER 5 Rock Mulch

THICKNESS 15 cm
POROSITY .35
MEASURED MASS DENSITY 1.7 g cm^-3
MEASURED RADIUM ACTIVITY 0 pCi/g^-1
MEASURED EMANATION COEFFICIENT .35
CALCULATED SOURCE TERM CONCENTRATION 0.000D+00 pCi cm^-3 s^-1
WEIGHT % MOISTURE 4 %
MOISTURE SATURATION FRACTION .194
MEASURED DIFFUSION COEFFICIENT .0256 cm^2 s^-1

DATA SENT TO THE FILE `RNDATA' ON DRIVE A:

N F01 CN1 ICOST CRITJ ACC
5 -1.000D+00 0.000D+00 0 0.000D+00 1.000D-03

LAYER DX D P Q XMS RHO
1 5.000D+02 2.880D-02 4.500D-01 1.061D-03 2.000D-01 1.500
2 7.600D+01 2.600D-02 4.300D-01 0.000D+00 2.337D-01 1.500
3 1.070D+02 1.600D-02 3.200D-01 0.000D+00 3.769D-01 1.800
4 1.070D+02 2.250D-02 3.900D-01 0.000D+00 2.749D-01 1.600
5 1.500D+01 2.560D-02 3.500D-01 0.000D+00 1.943D-01 1.700

BARE SOURCE FLUX FROM LAYER 1: 5.513D+02 pCi m^-2 s^-1

RESULTS OF THE RADON DIFFUSION CALCULATIONS

LAYER THICKNESS EXIT FLUX EXIT CONC.
(cm) (pCi m^-2 s^-1) (pCi l^-1)

1 5.000D+02 2.374D+02 2.838D+05
2 7.600D+01 9.083D+01 1.681D+05
3 1.070D+02 3.424D+01 3.009D+04
4 1.070D+02 1.962D+01 3.038D+03
5 1.500D+01 1.945D+01 0.000D+00
-----*****! RADON !*****-----

Version 1.2 - MAY 22, 1989 - G.F. Birchard tel.# [phone]
U.S. Nuclear Regulatory Commission Office of Research

RADON FLUX, CONCENTRATION AND TAILINGS COVER THICKNESS
ARE CALCULATED FOR MULTIPLE LAYERS

OUTPUT FILE: Cells4AB

DESCRIPTION: Cells 4A and 4B Cover

CONSTANTS

RADON DECAY CONSTANT .0000021 s^-1
RADON WATER/AIR PARTITION COEFFICIENT .26
DEFAULT SPECIFIC GRAVITY OF COVER & TAILINGS 2.65

GENERAL INPUT PARAMETERS

LAYERS OF COVER AND TAILINGS 5
NO LIMIT ON RADON FLUX
LAYER THICKNESS NOT OPTIMIZED
DEFAULT SURFACE RADON CONCENTRATION 0 pCi l^-1
SURFACE FLUX PRECISION .001 pCi m^-2 s^-1

LAYER INPUT PARAMETERS

LAYER 1 Tailings

THICKNESS 500 cm
POROSITY .45
MEASURED MASS DENSITY 1.5 g cm^-3
MEASURED RADIUM ACTIVITY 642 pCi/g^-1
MEASURED EMANATION COEFFICIENT .2
CALCULATED SOURCE TERM CONCENTRATION 8.988D-04 pCi cm^-3 s^-1
WEIGHT % MOISTURE 6 %
MOISTURE SATURATION FRACTION .200
MEASURED DIFFUSION COEFFICIENT .0288 cm^2 s^-1

LAYER 2 Random Fill

THICKNESS 76 cm
POROSITY .43
MEASURED MASS DENSITY 1.5 g cm^-3
MEASURED RADIUM ACTIVITY 0 pCi/g^-1
MEASURED EMANATION COEFFICIENT .35
CALCULATED SOURCE TERM CONCENTRATION 0.000D+00 pCi cm^-3 s^-1
WEIGHT % MOISTURE 6.7 %
MOISTURE SATURATION FRACTION .234
MEASURED DIFFUSION COEFFICIENT .026 cm^2 s^-1

LAYER 3 Compacted Random Fill

THICKNESS 91 cm
POROSITY .32
MEASURED MASS DENSITY 1.8 g cm^-3
MEASURED RADIUM ACTIVITY 0 pCi/g^-1
MEASURED EMANATION COEFFICIENT .35
CALCULATED SOURCE TERM CONCENTRATION 0.000D+00 pCi cm^-3 s^-1
WEIGHT % MOISTURE 6.7 %
MOISTURE SATURATION FRACTION .377
MEASURED DIFFUSION COEFFICIENT .016 cm^2 s^-1

LAYER 4 ET Cover

THICKNESS 107 cm
POROSITY .39
MEASURED MASS DENSITY 1.6 g cm^-3
MEASURED RADIUM ACTIVITY 0 pCi/g^-1
MEASURED EMANATION COEFFICIENT .35
CALCULATED SOURCE TERM CONCENTRATION 0.000D+00 pCi cm^-3 s^-1
WEIGHT % MOISTURE 6.7 %
MOISTURE SATURATION FRACTION .275
MEASURED DIFFUSION COEFFICIENT .0225 cm^2 s^-1

LAYER 5 Rock Mulch

THICKNESS 15 cm
POROSITY .35
MEASURED MASS DENSITY 1.7 g cm^-3
MEASURED RADIUM ACTIVITY 0 pCi/g^-1
MEASURED EMANATION COEFFICIENT .35
CALCULATED SOURCE TERM CONCENTRATION 0.000D+00 pCi cm^-3 s^-1
WEIGHT % MOISTURE 4 %
MOISTURE SATURATION FRACTION .194

DATA SENT TO THE FILE `RNDATA' ON DRIVE A:

N F01 CN1 ICOST CRITJ ACC
5 -1.000D+00 0.000D+00 0 0.000D+00 1.000D-03

LAYER DX D P Q XMS RHO
1 5.000D+02 2.880D-02 4.500D-01 8.988D-04 2.000D-01 1.500
2 7.600D+01 2.600D-02 4.300D-01 0.000D+00 2.337D-01 1.500
3 9.100D+01 1.600D-02 3.200D-01 0.000D+00 3.769D-01 1.800
4 1.070D+02 2.250D-02 3.900D-01 0.000D+00 2.749D-01 1.600
5 1.500D+01 2.560D-02 3.500D-01 0.000D+00 1.943D-01 1.700

BARE SOURCE FLUX FROM LAYER 1: 4.669D+02 pCi m^-2 s^-1

RESULTS OF THE RADON DIFFUSION CALCULATIONS

LAYER THICKNESS EXIT FLUX EXIT CONC.
(cm) (pCi m^-2 s^-1) (pCi l^-1)

1 5.000D+02 2.017D+02 2.398D+05
2 7.600D+01 7.817D+01 1.412D+05
3 9.100D+01 3.498D+01 3.074D+04
4 1.070D+02 2.005D+01 3.104D+03
5 1.500D+01 1.987D+01 0.000D+00

ATTACHMENT C.4
RADON MODEL OUTPUT FOR VARIABLE THICKNESS OF RANDOM FILL
-----*****! RADON !*****-----

Version 1.2 - MAY 22, 1989 - G.F. Birchard tel.# [phone]
U.S. Nuclear Regulatory Commission Office of Research

RADON FLUX, CONCENTRATION AND TAILINGS COVER THICKNESS
ARE CALCULATED FOR MULTIPLE LAYERS

OUTPUT FILE: Cell2pt1

DESCRIPTION: Cell 2 Evaluation of Impact of Increased Random Fill
Thickness – Point 1

CONSTANTS

RADON DECAY CONSTANT .0000021 s^-1
RADON WATER/AIR PARTITION COEFFICIENT .26
DEFAULT SPECIFIC GRAVITY OF COVER & TAILINGS 2.65

GENERAL INPUT PARAMETERS

LAYERS OF COVER AND TAILINGS 5
DEFAULT RADON FLUX LIMIT 20 pCi m^-2 s^-1
NO. OF THE LAYER TO BE OPTIMIZED 3
DEFAULT SURFACE RADON CONCENTRATION 0 pCi l^-1
SURFACE FLUX PRECISION .001 pCi m^-2 s^-1

LAYER INPUT PARAMETERS

LAYER 1 Tailings

THICKNESS 500 cm
POROSITY .45
MEASURED MASS DENSITY 1.5 g cm^-3
MEASURED RADIUM ACTIVITY 923 pCi/g^-1
MEASURED EMANATION COEFFICIENT .2
CALCULATED SOURCE TERM CONCENTRATION 1.292D-03 pCi cm^-3 s^-1
WEIGHT % MOISTURE 6 %
MOISTURE SATURATION FRACTION .200
MEASURED DIFFUSION COEFFICIENT .0288 cm^2 s^-1

LAYER 2 Random Fill

THICKNESS 76 cm
POROSITY .43
MEASURED MASS DENSITY 1.5 g cm^-3
MEASURED RADIUM ACTIVITY 0 pCi/g^-1
MEASURED EMANATION COEFFICIENT .35
CALCULATED SOURCE TERM CONCENTRATION 0.000D+00 pCi cm^-3 s^-1
WEIGHT % MOISTURE 6.7 %
MOISTURE SATURATION FRACTION .234
MEASURED DIFFUSION COEFFICIENT .026 cm^2 s^-1

LAYER 3 Compacted Random Fill

THICKNESS 1 cm
POROSITY .32
MEASURED MASS DENSITY 1.8 g cm^-3
MEASURED RADIUM ACTIVITY 0 pCi/g^-1
MEASURED EMANATION COEFFICIENT .35
CALCULATED SOURCE TERM CONCENTRATION 0.000D+00 pCi cm^-3 s^-1
WEIGHT % MOISTURE 6.7 %
MOISTURE SATURATION FRACTION .377
MEASURED DIFFUSION COEFFICIENT .016 cm^2 s^-1

LAYER 4 ET Cover

THICKNESS 107 cm
POROSITY .39
MEASURED MASS DENSITY 1.6 g cm^-3
MEASURED RADIUM ACTIVITY 0 pCi/g^-1
MEASURED EMANATION COEFFICIENT .35
CALCULATED SOURCE TERM CONCENTRATION 0.000D+00 pCi cm^-3 s^-1
WEIGHT % MOISTURE 6.7 %
MOISTURE SATURATION FRACTION .275
MEASURED DIFFUSION COEFFICIENT .0225 cm^2 s^-1

LAYER 5 Topsoil

THICKNESS 15 cm
POROSITY .38
MEASURED MASS DENSITY 1.6 g cm^-3
MEASURED RADIUM ACTIVITY 0 pCi/g^-1
MEASURED EMANATION COEFFICIENT .35
CALCULATED SOURCE TERM CONCENTRATION 0.000D+00 pCi cm^-3 s^-1
WEIGHT % MOISTURE 5.2 %
MOISTURE SATURATION FRACTION .219
MEASURED DIFFUSION COEFFICIENT .0254 cm^2 s^-1

DATA SENT TO THE FILE `RNDATA' ON DRIVE A:

N F01 CN1 ICOST CRITJ ACC
5 -1.000D+00 0.000D+00 3 2.000D+01 1.000D-03

LAYER DX D P Q XMS RHO
1 5.000D+02 2.880D-02 4.500D-01 1.292D-03 2.000D-01 1.500
2 7.600D+01 2.600D-02 4.300D-01 0.000D+00 2.337D-01 1.500
3 1.000D+00 1.600D-02 3.200D-01 0.000D+00 3.769D-01 1.800
4 1.070D+02 2.250D-02 3.900D-01 0.000D+00 2.749D-01 1.600
5 1.500D+01 2.540D-02 3.800D-01 0.000D+00 2.189D-01 1.600

BARE SOURCE FLUX FROM LAYER 1: 6.713D+02 pCi m^-2 s^-1

RESULTS OF THE RADON DIFFUSION CALCULATIONS

LAYER THICKNESS EXIT FLUX EXIT CONC.
(cm) (pCi m^-2 s^-1) (pCi l^-1)

1 5.000D+02 2.884D+02 3.461D+05
2 7.600D+01 1.094D+02 2.058D+05
3 1.219D+02 3.507D+01 3.073D+04
4 1.070D+02 2.020D+01 2.966D+03
5 1.500D+01 2.000D+01 0.000D+00
-----*****! RADON !*****-----

Version 1.2 - MAY 22, 1989 - G.F. Birchard tel.# [phone]
U.S. Nuclear Regulatory Commission Office of Research

RADON FLUX, CONCENTRATION AND TAILINGS COVER THICKNESS
ARE CALCULATED FOR MULTIPLE LAYERS

OUTPUT FILE: Cell2pt2

DESCRIPTION: Cell 2 Evaluation of Impact of Increased Random Fill
Thickness – Point 2

CONSTANTS

RADON DECAY CONSTANT .0000021 s^-1
RADON WATER/AIR PARTITION COEFFICIENT .26
DEFAULT SPECIFIC GRAVITY OF COVER & TAILINGS 2.65

GENERAL INPUT PARAMETERS

LAYERS OF COVER AND TAILINGS 5
DEFAULT RADON FLUX LIMIT 20 pCi m^-2 s^-1
NO. OF THE LAYER TO BE OPTIMIZED 3
DEFAULT SURFACE RADON CONCENTRATION 0 pCi l^-1
SURFACE FLUX PRECISION .001 pCi m^-2 s^-1

LAYER INPUT PARAMETERS

LAYER 1 Tailings

THICKNESS 500 cm
POROSITY .45
MEASURED MASS DENSITY 1.5 g cm^-3
MEASURED RADIUM ACTIVITY 923 pCi/g^-1
MEASURED EMANATION COEFFICIENT .2
CALCULATED SOURCE TERM CONCENTRATION 1.292D-03 pCi cm^-3 s^-1
WEIGHT % MOISTURE 6 %
MOISTURE SATURATION FRACTION .200
MEASURED DIFFUSION COEFFICIENT .0288 cm^2 s^-1

LAYER 2 Random Fill

THICKNESS 107 cm
POROSITY .43
MEASURED MASS DENSITY 1.5 g cm^-3
MEASURED RADIUM ACTIVITY 0 pCi/g^-1
MEASURED EMANATION COEFFICIENT .35
CALCULATED SOURCE TERM CONCENTRATION 0.000D+00 pCi cm^-3 s^-1
WEIGHT % MOISTURE 6.7 %
MOISTURE SATURATION FRACTION .234
MEASURED DIFFUSION COEFFICIENT .026 cm^2 s^-1

LAYER 3 Compacted Random Fill

THICKNESS 1 cm
POROSITY .32
MEASURED MASS DENSITY 1.8 g cm^-3
MEASURED RADIUM ACTIVITY 0 pCi/g^-1
MEASURED EMANATION COEFFICIENT .35
CALCULATED SOURCE TERM CONCENTRATION 0.000D+00 pCi cm^-3 s^-1
WEIGHT % MOISTURE 6.7 %
MOISTURE SATURATION FRACTION .377
MEASURED DIFFUSION COEFFICIENT .016 cm^2 s^-1

LAYER 4 ET Cover

THICKNESS 107 cm
POROSITY .39
MEASURED MASS DENSITY 1.6 g cm^-3
MEASURED RADIUM ACTIVITY 0 pCi/g^-1
MEASURED EMANATION COEFFICIENT .35
CALCULATED SOURCE TERM CONCENTRATION 0.000D+00 pCi cm^-3 s^-1
WEIGHT % MOISTURE 6.7 %
MOISTURE SATURATION FRACTION .275
MEASURED DIFFUSION COEFFICIENT .0225 cm^2 s^-1

LAYER 5 Topsoil

THICKNESS 15 cm
POROSITY .38
MEASURED MASS DENSITY 1.6 g cm^-3
MEASURED RADIUM ACTIVITY 0 pCi/g^-1
MEASURED EMANATION COEFFICIENT .35
CALCULATED SOURCE TERM CONCENTRATION 0.000D+00 pCi cm^-3 s^-1
WEIGHT % MOISTURE 5.2 %
MOISTURE SATURATION FRACTION .219
MEASURED DIFFUSION COEFFICIENT .0254 cm^2 s^-1

DATA SENT TO THE FILE `RNDATA' ON DRIVE A:

N F01 CN1 ICOST CRITJ ACC
5 -1.000D+00 0.000D+00 3 2.000D+01 1.000D-03

LAYER DX D P Q XMS RHO
1 5.000D+02 2.880D-02 4.500D-01 1.292D-03 2.000D-01 1.500
2 1.070D+02 2.600D-02 4.300D-01 0.000D+00 2.337D-01 1.500
3 1.000D+00 1.600D-02 3.200D-01 0.000D+00 3.769D-01 1.800
4 1.070D+02 2.250D-02 3.900D-01 0.000D+00 2.749D-01 1.600
5 1.500D+01 2.540D-02 3.800D-01 0.000D+00 2.189D-01 1.600

BARE SOURCE FLUX FROM LAYER 1: 6.713D+02 pCi m^-2 s^-1

RESULTS OF THE RADON DIFFUSION CALCULATIONS

LAYER THICKNESS EXIT FLUX EXIT CONC.
(cm) (pCi m^-2 s^-1) (pCi l^-1)

1 5.000D+02 3.002D+02 3.355D+05
2 1.070D+02 8.457D+01 1.545D+05
3 9.819D+01 3.508D+01 3.075D+04
4 1.070D+02 2.021D+01 2.967D+03
5 1.500D+01 2.000D+01 0.000D+00

-----*****! RADON !*****-----

Version 1.2 - MAY 22, 1989 - G.F. Birchard tel.# [phone]
U.S. Nuclear Regulatory Commission Office of Research

RADON FLUX, CONCENTRATION AND TAILINGS COVER THICKNESS
ARE CALCULATED FOR MULTIPLE LAYERS

OUTPUT FILE: Cell2pt3

DESCRIPTION: Cell 2 Evaluation of Impact of Increased Random Fill
Thickness – Point 3

CONSTANTS

RADON DECAY CONSTANT .0000021 s^-1
RADON WATER/AIR PARTITION COEFFICIENT .26
DEFAULT SPECIFIC GRAVITY OF COVER & TAILINGS 2.65

GENERAL INPUT PARAMETERS

LAYERS OF COVER AND TAILINGS 5
DEFAULT RADON FLUX LIMIT 20 pCi m^-2 s^-1
NO. OF THE LAYER TO BE OPTIMIZED 3
DEFAULT SURFACE RADON CONCENTRATION 0 pCi l^-1
SURFACE FLUX PRECISION .001 pCi m^-2 s^-1

LAYER INPUT PARAMETERS

LAYER 1 Tailings

THICKNESS 500 cm
POROSITY .45
MEASURED MASS DENSITY 1.5 g cm^-3
MEASURED RADIUM ACTIVITY 923 pCi/g^-1
MEASURED EMANATION COEFFICIENT .2
CALCULATED SOURCE TERM CONCENTRATION 1.292D-03 pCi cm^-3 s^-1
WEIGHT % MOISTURE 6 %
MOISTURE SATURATION FRACTION .200
MEASURED DIFFUSION COEFFICIENT .0288 cm^2 s^-1

LAYER 2 Random Fill

THICKNESS 152 cm
POROSITY .43
MEASURED MASS DENSITY 1.5 g cm^-3
MEASURED RADIUM ACTIVITY 0 pCi/g^-1
MEASURED EMANATION COEFFICIENT .35
CALCULATED SOURCE TERM CONCENTRATION 0.000D+00 pCi cm^-3 s^-1
WEIGHT % MOISTURE 6.7 %
MOISTURE SATURATION FRACTION .234
MEASURED DIFFUSION COEFFICIENT .026 cm^2 s^-1

LAYER 3 Compacted Random Fill

THICKNESS 1 cm
POROSITY .32
MEASURED MASS DENSITY 1.8 g cm^-3
MEASURED RADIUM ACTIVITY 0 pCi/g^-1
MEASURED EMANATION COEFFICIENT .35
CALCULATED SOURCE TERM CONCENTRATION 0.000D+00 pCi cm^-3 s^-1
WEIGHT % MOISTURE 6.7 %
MOISTURE SATURATION FRACTION .377
MEASURED DIFFUSION COEFFICIENT .016 cm^2 s^-1

LAYER 4 ET Cover

THICKNESS 107 cm
POROSITY .39
MEASURED MASS DENSITY 1.6 g cm^-3
MEASURED RADIUM ACTIVITY 0 pCi/g^-1
MEASURED EMANATION COEFFICIENT .35
CALCULATED SOURCE TERM CONCENTRATION 0.000D+00 pCi cm^-3 s^-1
WEIGHT % MOISTURE 6.7 %
MOISTURE SATURATION FRACTION .275
MEASURED DIFFUSION COEFFICIENT .0225 cm^2 s^-1

LAYER 5 Topsoil

THICKNESS 15 cm
POROSITY .38
MEASURED MASS DENSITY 1.6 g cm^-3
MEASURED RADIUM ACTIVITY 0 pCi/g^-1
MEASURED EMANATION COEFFICIENT .35
CALCULATED SOURCE TERM CONCENTRATION 0.000D+00 pCi cm^-3 s^-1
WEIGHT % MOISTURE 5.2 %
MOISTURE SATURATION FRACTION .219
MEASURED DIFFUSION COEFFICIENT .0254 cm^2 s^-1

DATA SENT TO THE FILE `RNDATA' ON DRIVE A:

N F01 CN1 ICOST CRITJ ACC
5 -1.000D+00 0.000D+00 3 2.000D+01 1.000D-03

LAYER DX D P Q XMS RHO
1 5.000D+02 2.880D-02 4.500D-01 1.292D-03 2.000D-01 1.500
2 1.520D+02 2.600D-02 4.300D-01 0.000D+00 2.337D-01 1.500
3 1.000D+00 1.600D-02 3.200D-01 0.000D+00 3.769D-01 1.800
4 1.070D+02 2.250D-02 3.900D-01 0.000D+00 2.749D-01 1.600
5 1.500D+01 2.540D-02 3.800D-01 0.000D+00 2.189D-01 1.600

BARE SOURCE FLUX FROM LAYER 1: 6.713D+02 pCi m^-2 s^-1

RESULTS OF THE RADON DIFFUSION CALCULATIONS

LAYER THICKNESS EXIT FLUX EXIT CONC.
(cm) (pCi m^-2 s^-1) (pCi l^-1)

1 5.000D+02 3.089D+02 3.276D+05
2 1.520D+02 5.950D+01 1.003D+05
3 6.418D+01 3.509D+01 3.075D+04
4 1.070D+02 2.021D+01 2.967D+03
5 1.500D+01 2.000D+01 0.000D+00

-----*****! RADON !*****-----

Version 1.2 - MAY 22, 1989 - G.F. Birchard tel.# [phone]
U.S. Nuclear Regulatory Commission Office of Research

RADON FLUX, CONCENTRATION AND TAILINGS COVER THICKNESS
ARE CALCULATED FOR MULTIPLE LAYERS

OUTPUT FILE: Cell2pt4

DESCRIPTION: Cell 2 Evaluation of Impact of Increased Random Fill
Thickness – Point 4

CONSTANTS

RADON DECAY CONSTANT .0000021 s^-1
RADON WATER/AIR PARTITION COEFFICIENT .26
DEFAULT SPECIFIC GRAVITY OF COVER & TAILINGS 2.65

GENERAL INPUT PARAMETERS

LAYERS OF COVER AND TAILINGS 4
RADON FLUX LIMIT 20 pCi m^-2 s^-1
NO. OF THE LAYER TO BE OPTIMIZED 2
DEFAULT SURFACE RADON CONCENTRATION 0 pCi l^-1
SURFACE FLUX PRECISION .001 pCi m^-2 s^-1

LAYER INPUT PARAMETERS

LAYER 1 Tailings

THICKNESS 500 cm
POROSITY .45
MEASURED MASS DENSITY 1.5 g cm^-3
MEASURED RADIUM ACTIVITY 923 pCi/g^-1
MEASURED EMANATION COEFFICIENT .2
CALCULATED SOURCE TERM CONCENTRATION 1.292D-03 pCi cm^-3 s^-1
WEIGHT % MOISTURE 6 %
MOISTURE SATURATION FRACTION .200
MEASURED DIFFUSION COEFFICIENT .0288 cm^2 s^-1

LAYER 2 Random Fill

THICKNESS 1 cm
POROSITY .43
MEASURED MASS DENSITY 1.5 g cm^-3
MEASURED RADIUM ACTIVITY 0 pCi/g^-1
MEASURED EMANATION COEFFICIENT .35
CALCULATED SOURCE TERM CONCENTRATION 0.000D+00 pCi cm^-3 s^-1
WEIGHT % MOISTURE 6.7 %
MOISTURE SATURATION FRACTION .234
MEASURED DIFFUSION COEFFICIENT .026 cm^2 s^-1

LAYER 3 ET Cover

THICKNESS 107 cm
POROSITY .39
MEASURED MASS DENSITY 1.6 g cm^-3
MEASURED RADIUM ACTIVITY 0 pCi/g^-1
MEASURED EMANATION COEFFICIENT .35
CALCULATED SOURCE TERM CONCENTRATION 0.000D+00 pCi cm^-3 s^-1
WEIGHT % MOISTURE 6.7 %
MOISTURE SATURATION FRACTION .275
MEASURED DIFFUSION COEFFICIENT .0225 cm^2 s^-1

LAYER 4 Topsoil

THICKNESS 15 cm
POROSITY .38
MEASURED MASS DENSITY 1.6 g cm^-3
MEASURED RADIUM ACTIVITY 0 pCi/g^-1
MEASURED EMANATION COEFFICIENT .35
CALCULATED SOURCE TERM CONCENTRATION 0.000D+00 pCi cm^-3 s^-1
WEIGHT % MOISTURE 5.2 %
MOISTURE SATURATION FRACTION .219
MEASURED DIFFUSION COEFFICIENT .0254 cm^2 s^-1

DATA SENT TO THE FILE `RNDATA' ON DRIVE A:

N F01 CN1 ICOST CRITJ ACC
4 -1.000D+00 0.000D+00 2 2.000D+01 1.000D-03

LAYER DX D P Q XMS RHO
1 5.000D+02 2.880D-02 4.500D-01 1.292D-03 2.000D-01 1.500
2 1.000D+00 2.600D-02 4.300D-01 0.000D+00 2.337D-01 1.500
3 1.070D+02 2.250D-02 3.900D-01 0.000D+00 2.749D-01 1.600
4 1.500D+01 2.540D-02 3.800D-01 0.000D+00 2.189D-01 1.600

BARE SOURCE FLUX FROM LAYER 1: 6.713D+02 pCi m^-2 s^-1

RESULTS OF THE RADON DIFFUSION CALCULATIONS

LAYER THICKNESS EXIT FLUX EXIT CONC.
(cm) (pCi m^-2 s^-1) (pCi l^-1)

1 5.000D+02 3.145D+02 3.225D+05
2 2.437D+02 3.502D+01 3.520D+04
3 1.070D+02 2.017D+01 2.961D+03
4 1.500D+01 1.998D+01 0.000D+00

-----*****! RADON !*****-----

Version 1.2 - MAY 22, 1989 - G.F. Birchard tel.# [phone]
U.S. Nuclear Regulatory Commission Office of Research

RADON FLUX, CONCENTRATION AND TAILINGS COVER THICKNESS
ARE CALCULATED FOR MULTIPLE LAYERS

OUTPUT FILE: Cell3pt1

DESCRIPTION: Cell 3 Evaluation of Impact of Increased Random Fill
Thickness – Point 1

CONSTANTS

RADON DECAY CONSTANT .0000021 s^-1
RADON WATER/AIR PARTITION COEFFICIENT .26
DEFAULT SPECIFIC GRAVITY OF COVER & TAILINGS 2.65

GENERAL INPUT PARAMETERS

LAYERS OF COVER AND TAILINGS 5
RADON FLUX LIMIT 20 pCi m^-2 s^-1
NO. OF THE LAYER TO BE OPTIMIZED 3
DEFAULT SURFACE RADON CONCENTRATION 0 pCi l^-1
SURFACE FLUX PRECISION .001 pCi m^-2 s^-1

LAYER INPUT PARAMETERS

LAYER 1 Tailings

THICKNESS 500 cm
POROSITY .45
MEASURED MASS DENSITY 1.5 g cm^-3
MEASURED RADIUM ACTIVITY 758 pCi/g^-1
MEASURED EMANATION COEFFICIENT .2
CALCULATED SOURCE TERM CONCENTRATION 1.061D-03 pCi cm^-3 s^-1
WEIGHT % MOISTURE 6 %
MOISTURE SATURATION FRACTION .200
MEASURED DIFFUSION COEFFICIENT .0288 cm^2 s^-1

LAYER 2 Random Fill

THICKNESS 76 cm
POROSITY .43
MEASURED MASS DENSITY 1.5 g cm^-3
MEASURED RADIUM ACTIVITY 0 pCi/g^-1
MEASURED EMANATION COEFFICIENT .35
CALCULATED SOURCE TERM CONCENTRATION 0.000D+00 pCi cm^-3 s^-1
WEIGHT % MOISTURE 6.7 %
MOISTURE SATURATION FRACTION .234
MEASURED DIFFUSION COEFFICIENT .026 cm^2 s^-1

LAYER 3 Compacted Random Fill

THICKNESS 1 cm
POROSITY .32
MEASURED MASS DENSITY 1.8 g cm^-3
MEASURED RADIUM ACTIVITY 0 pCi/g^-1
MEASURED EMANATION COEFFICIENT .35
CALCULATED SOURCE TERM CONCENTRATION 0.000D+00 pCi cm^-3 s^-1
WEIGHT % MOISTURE 6.7 %
MOISTURE SATURATION FRACTION .377
MEASURED DIFFUSION COEFFICIENT .016 cm^2 s^-1

LAYER 4 ET Cover

THICKNESS 107 cm
POROSITY .39
MEASURED MASS DENSITY 1.6 g cm^-3
MEASURED RADIUM ACTIVITY 0 pCi/g^-1
MEASURED EMANATION COEFFICIENT .35
CALCULATED SOURCE TERM CONCENTRATION 0.000D+00 pCi cm^-3 s^-1
WEIGHT % MOISTURE 6.7 %
MOISTURE SATURATION FRACTION .275
MEASURED DIFFUSION COEFFICIENT .0225 cm^2 s^-1

LAYER 5 Topsoil

THICKNESS 15 cm
POROSITY .38
MEASURED MASS DENSITY 1.6 g cm^-3
MEASURED RADIUM ACTIVITY 0 pCi/g^-1
MEASURED EMANATION COEFFICIENT .35
CALCULATED SOURCE TERM CONCENTRATION 0.000D+00 pCi cm^-3 s^-1
WEIGHT % MOISTURE 5.2 %
MOISTURE SATURATION FRACTION .219
MEASURED DIFFUSION COEFFICIENT .0254 cm^2 s^-1

DATA SENT TO THE FILE `RNDATA' ON DRIVE A:

N F01 CN1 ICOST CRITJ ACC
5 -1.000D+00 0.000D+00 3 2.000D+01 1.000D-03

LAYER DX D P Q XMS RHO
1 5.000D+02 2.880D-02 4.500D-01 1.061D-03 2.000D-01 1.500
2 7.600D+01 2.600D-02 4.300D-01 0.000D+00 2.337D-01 1.500
3 1.000D+00 1.600D-02 3.200D-01 0.000D+00 3.769D-01 1.800
4 1.070D+02 2.250D-02 3.900D-01 0.000D+00 2.749D-01 1.600
5 1.500D+01 2.540D-02 3.800D-01 0.000D+00 2.189D-01 1.600

BARE SOURCE FLUX FROM LAYER 1: 5.513D+02 pCi m^-2 s^-1

RESULTS OF THE RADON DIFFUSION CALCULATIONS

LAYER THICKNESS EXIT FLUX EXIT CONC.
(cm) (pCi m^-2 s^-1) (pCi l^-1)

1 5.000D+02 2.375D+02 2.837D+05
2 7.600D+01 9.099D+01 1.679D+05
3 1.050D+02 3.508D+01 3.074D+04
4 1.070D+02 2.020D+01 2.966D+03
5 1.500D+01 2.000D+01 0.000D+00

-----*****! RADON !*****-----

Version 1.2 - MAY 22, 1989 - G.F. Birchard tel.# [phone]
U.S. Nuclear Regulatory Commission Office of Research

RADON FLUX, CONCENTRATION AND TAILINGS COVER THICKNESS
ARE CALCULATED FOR MULTIPLE LAYERS

OUTPUT FILE: Cell3pt2

DESCRIPTION: Cell 3 Evaluation of Impact of Increased Random Fill
Thickness – Point 2

CONSTANTS

RADON DECAY CONSTANT .0000021 s^-1
RADON WATER/AIR PARTITION COEFFICIENT .26
DEFAULT SPECIFIC GRAVITY OF COVER & TAILINGS 2.65

GENERAL INPUT PARAMETERS

LAYERS OF COVER AND TAILINGS 5
RADON FLUX LIMIT 20 pCi m^-2 s^-1
NO. OF THE LAYER TO BE OPTIMIZED 3
DEFAULT SURFACE RADON CONCENTRATION 0 pCi l^-1
SURFACE FLUX PRECISION .001 pCi m^-2 s^-1

LAYER INPUT PARAMETERS

LAYER 1 Tailings

THICKNESS 500 cm
POROSITY .45
MEASURED MASS DENSITY 1.5 g cm^-3
MEASURED RADIUM ACTIVITY 758 pCi/g^-1
MEASURED EMANATION COEFFICIENT .2
CALCULATED SOURCE TERM CONCENTRATION 1.061D-03 pCi cm^-3 s^-1
WEIGHT % MOISTURE 6 %
MOISTURE SATURATION FRACTION .200
MEASURED DIFFUSION COEFFICIENT .0288 cm^2 s^-1

LAYER 2 Random Fill

THICKNESS 107 cm
POROSITY .43
MEASURED MASS DENSITY 1.5 g cm^-3
MEASURED RADIUM ACTIVITY 0 pCi/g^-1
MEASURED EMANATION COEFFICIENT .35
CALCULATED SOURCE TERM CONCENTRATION 0.000D+00 pCi cm^-3 s^-1
WEIGHT % MOISTURE 6.7 %
MOISTURE SATURATION FRACTION .234
MEASURED DIFFUSION COEFFICIENT .026 cm^2 s^-1

LAYER 3 Compacted Random Fill

THICKNESS 1 cm
POROSITY .32
MEASURED MASS DENSITY 1.8 g cm^-3
MEASURED RADIUM ACTIVITY 0 pCi/g^-1
MEASURED EMANATION COEFFICIENT .35
CALCULATED SOURCE TERM CONCENTRATION 0.000D+00 pCi cm^-3 s^-1
WEIGHT % MOISTURE 6.7 %
MOISTURE SATURATION FRACTION .377
MEASURED DIFFUSION COEFFICIENT .016 cm^2 s^-1

LAYER 4 ET Cover

THICKNESS 107 cm
POROSITY .39
MEASURED MASS DENSITY 1.6 g cm^-3
MEASURED RADIUM ACTIVITY 0 pCi/g^-1
MEASURED EMANATION COEFFICIENT .35
CALCULATED SOURCE TERM CONCENTRATION 0.000D+00 pCi cm^-3 s^-1
WEIGHT % MOISTURE 6.7 %
MOISTURE SATURATION FRACTION .275
MEASURED DIFFUSION COEFFICIENT .0225 cm^2 s^-1

LAYER 5 Topsoil

THICKNESS 15 cm
POROSITY .38
MEASURED MASS DENSITY 1.6 g cm^-3
MEASURED RADIUM ACTIVITY 0 pCi/g^-1
MEASURED EMANATION COEFFICIENT .35
CALCULATED SOURCE TERM CONCENTRATION 0.000D+00 pCi cm^-3 s^-1
WEIGHT % MOISTURE 5.2 %
MOISTURE SATURATION FRACTION .219
MEASURED DIFFUSION COEFFICIENT .0254 cm^2 s^-1

DATA SENT TO THE FILE `RNDATA' ON DRIVE A:

N F01 CN1 ICOST CRITJ ACC
5 -1.000D+00 0.000D+00 3 2.000D+01 1.000D-03

LAYER DX D P Q XMS RHO
1 5.000D+02 2.880D-02 4.500D-01 1.061D-03 2.000D-01 1.500
2 1.070D+02 2.600D-02 4.300D-01 0.000D+00 2.337D-01 1.500
3 1.000D+00 1.600D-02 3.200D-01 0.000D+00 3.769D-01 1.800
4 1.070D+02 2.250D-02 3.900D-01 0.000D+00 2.749D-01 1.600
5 1.500D+01 2.540D-02 3.800D-01 0.000D+00 2.189D-01 1.600

BARE SOURCE FLUX FROM LAYER 1: 5.513D+02 pCi m^-2 s^-1

RESULTS OF THE RADON DIFFUSION CALCULATIONS

LAYER THICKNESS EXIT FLUX EXIT CONC.
(cm) (pCi m^-2 s^-1) (pCi l^-1)

1 5.000D+02 2.471D+02 2.750D+05
2 1.070D+02 7.089D+01 1.255D+05
3 8.150D+01 3.507D+01 3.073D+04
4 1.070D+02 2.020D+01 2.966D+03
5 1.500D+01 2.000D+01 0.000D+00

-----*****! RADON !*****-----

Version 1.2 - MAY 22, 1989 - G.F. Birchard tel.# [phone]
U.S. Nuclear Regulatory Commission Office of Research

RADON FLUX, CONCENTRATION AND TAILINGS COVER THICKNESS
ARE CALCULATED FOR MULTIPLE LAYERS

OUTPUT FILE: Cell3pt3

DESCRIPTION: Cell 3 Evaluation of Impact of Increased Random Fill
Thickness – Point 3

CONSTANTS

RADON DECAY CONSTANT .0000021 s^-1
RADON WATER/AIR PARTITION COEFFICIENT .26
DEFAULT SPECIFIC GRAVITY OF COVER & TAILINGS 2.65

GENERAL INPUT PARAMETERS

LAYERS OF COVER AND TAILINGS 5
RADON FLUX LIMIT 20 pCi m^-2 s^-1
NO. OF THE LAYER TO BE OPTIMIZED 3
DEFAULT SURFACE RADON CONCENTRATION 0 pCi l^-1
SURFACE FLUX PRECISION .001 pCi m^-2 s^-1

LAYER INPUT PARAMETERS

LAYER 1 Tailings

THICKNESS 500 cm
POROSITY .45
MEASURED MASS DENSITY 1.5 g cm^-3
MEASURED RADIUM ACTIVITY 758 pCi/g^-1
MEASURED EMANATION COEFFICIENT .2
CALCULATED SOURCE TERM CONCENTRATION 1.061D-03 pCi cm^-3 s^-1
WEIGHT % MOISTURE 6 %
MOISTURE SATURATION FRACTION .200
MEASURED DIFFUSION COEFFICIENT .0288 cm^2 s^-1

LAYER 2 Random Fill

THICKNESS 152 cm
POROSITY .43
MEASURED MASS DENSITY 1.5 g cm^-3
MEASURED RADIUM ACTIVITY 0 pCi/g^-1
MEASURED EMANATION COEFFICIENT .35
CALCULATED SOURCE TERM CONCENTRATION 0.000D+00 pCi cm^-3 s^-1
WEIGHT % MOISTURE 6.7 %
MOISTURE SATURATION FRACTION .234
MEASURED DIFFUSION COEFFICIENT .026 cm^2 s^-1

LAYER 3 Compacted Random Fill

THICKNESS 1 cm
POROSITY .32
MEASURED MASS DENSITY 1.8 g cm^-3
MEASURED RADIUM ACTIVITY 0 pCi/g^-1
MEASURED EMANATION COEFFICIENT .35
CALCULATED SOURCE TERM CONCENTRATION 0.000D+00 pCi cm^-3 s^-1
WEIGHT % MOISTURE 6.7 %
MOISTURE SATURATION FRACTION .377
MEASURED DIFFUSION COEFFICIENT .016 cm^2 s^-1

LAYER 4 ET Cover

THICKNESS 107 cm
POROSITY .39
MEASURED MASS DENSITY 1.6 g cm^-3
MEASURED RADIUM ACTIVITY 0 pCi/g^-1
MEASURED EMANATION COEFFICIENT .35
CALCULATED SOURCE TERM CONCENTRATION 0.000D+00 pCi cm^-3 s^-1
WEIGHT % MOISTURE 6.7 %
MOISTURE SATURATION FRACTION .275
MEASURED DIFFUSION COEFFICIENT .0225 cm^2 s^-1

LAYER 5 Topsoil

THICKNESS 15 cm
POROSITY .38
MEASURED MASS DENSITY 1.6 g cm^-3
MEASURED RADIUM ACTIVITY 0 pCi/g^-1
MEASURED EMANATION COEFFICIENT .35
CALCULATED SOURCE TERM CONCENTRATION 0.000D+00 pCi cm^-3 s^-1
WEIGHT % MOISTURE 5.2 %
MOISTURE SATURATION FRACTION .219
MEASURED DIFFUSION COEFFICIENT .0254 cm^2 s^-1

DATA SENT TO THE FILE `RNDATA' ON DRIVE A:

N F01 CN1 ICOST CRITJ ACC
5 -1.000D+00 0.000D+00 3 2.000D+01 1.000D-03

LAYER DX D P Q XMS RHO
1 5.000D+02 2.880D-02 4.500D-01 1.061D-03 2.000D-01 1.500
2 1.520D+02 2.600D-02 4.300D-01 0.000D+00 2.337D-01 1.500
3 1.000D+00 1.600D-02 3.200D-01 0.000D+00 3.769D-01 1.800
4 1.070D+02 2.250D-02 3.900D-01 0.000D+00 2.749D-01 1.600
5 1.500D+01 2.540D-02 3.800D-01 0.000D+00 2.189D-01 1.600

BARE SOURCE FLUX FROM LAYER 1: 5.513D+02 pCi m^-2 s^-1

RESULTS OF THE RADON DIFFUSION CALCULATIONS

LAYER THICKNESS EXIT FLUX EXIT CONC.
(cm) (pCi m^-2 s^-1) (pCi l^-1)

1 5.000D+02 2.543D+02 2.685D+05
2 1.520D+02 5.094D+01 8.036D+04
3 4.798D+01 3.509D+01 3.075D+04
4 1.070D+02 2.021D+01 2.967D+03
5 1.500D+01 2.000D+01 0.000D+00

-----*****! RADON !*****-----

Version 1.2 - MAY 22, 1989 - G.F. Birchard tel.# [phone]
U.S. Nuclear Regulatory Commission Office of Research

RADON FLUX, CONCENTRATION AND TAILINGS COVER THICKNESS
ARE CALCULATED FOR MULTIPLE LAYERS

OUTPUT FILE: Cell3pt4

DESCRIPTION: Cell 3 Evaluation of Impact of Increased Random Fill
Thickness – Point 4

CONSTANTS

RADON DECAY CONSTANT .0000021 s^-1
RADON WATER/AIR PARTITION COEFFICIENT .26
DEFAULT SPECIFIC GRAVITY OF COVER & TAILINGS 2.65

GENERAL INPUT PARAMETERS

LAYERS OF COVER AND TAILINGS 4
RADON FLUX LIMIT 20 pCi m^-2 s^-1
NO. OF THE LAYER TO BE OPTIMIZED 2
DEFAULT SURFACE RADON CONCENTRATION 0 pCi l^-1
SURFACE FLUX PRECISION .001 pCi m^-2 s^-1

LAYER INPUT PARAMETERS

LAYER 1 Tailings

THICKNESS 500 cm
POROSITY .45
MEASURED MASS DENSITY 1.5 g cm^-3
MEASURED RADIUM ACTIVITY 758 pCi/g^-1
MEASURED EMANATION COEFFICIENT .2
CALCULATED SOURCE TERM CONCENTRATION 1.061D-03 pCi cm^-3 s^-1
WEIGHT % MOISTURE 6 %
MOISTURE SATURATION FRACTION .200
MEASURED DIFFUSION COEFFICIENT .0288 cm^2 s^-1

LAYER 2 Random Fill

THICKNESS 1 cm
POROSITY .43
MEASURED MASS DENSITY 1.5 g cm^-3
MEASURED RADIUM ACTIVITY 0 pCi/g^-1
MEASURED EMANATION COEFFICIENT .35
CALCULATED SOURCE TERM CONCENTRATION 0.000D+00 pCi cm^-3 s^-1
WEIGHT % MOISTURE 6.7 %
MOISTURE SATURATION FRACTION .234
MEASURED DIFFUSION COEFFICIENT .026 cm^2 s^-1

LAYER 3 ET Cover

THICKNESS 107 cm
POROSITY .39
MEASURED MASS DENSITY 1.6 g cm^-3
MEASURED RADIUM ACTIVITY 0 pCi/g^-1
MEASURED EMANATION COEFFICIENT .35
CALCULATED SOURCE TERM CONCENTRATION 0.000D+00 pCi cm^-3 s^-1
WEIGHT % MOISTURE 6.7 %
MOISTURE SATURATION FRACTION .275
MEASURED DIFFUSION COEFFICIENT .0225 cm^2 s^-1

LAYER 4 Topsoil

THICKNESS 15 cm
POROSITY .38
MEASURED MASS DENSITY 1.6 g cm^-3
MEASURED RADIUM ACTIVITY 0 pCi/g^-1
MEASURED EMANATION COEFFICIENT .35
CALCULATED SOURCE TERM CONCENTRATION 0.000D+00 pCi cm^-3 s^-1
WEIGHT % MOISTURE 5.2 %
MOISTURE SATURATION FRACTION .219
MEASURED DIFFUSION COEFFICIENT .0254 cm^2 s^-1

DATA SENT TO THE FILE `RNDATA' ON DRIVE A:

N F01 CN1 ICOST CRITJ ACC
4 -1.000D+00 0.000D+00 2 2.000D+01 1.000D-03

LAYER DX D P Q XMS RHO
1 5.000D+02 2.880D-02 4.500D-01 1.061D-03 2.000D-01 1.500
2 1.000D+00 2.600D-02 4.300D-01 0.000D+00 2.337D-01 1.500
3 1.070D+02 2.250D-02 3.900D-01 0.000D+00 2.749D-01 1.600
4 1.500D+01 2.540D-02 3.800D-01 0.000D+00 2.189D-01 1.600

BARE SOURCE FLUX FROM LAYER 1: 5.513D+02 pCi m^-2 s^-1

RESULTS OF THE RADON DIFFUSION CALCULATIONS

LAYER THICKNESS EXIT FLUX EXIT CONC.
(cm) (pCi m^-2 s^-1) (pCi l^-1)

1 5.000D+02 2.583D+02 2.649D+05
2 2.217D+02 3.506D+01 3.523D+04
3 1.070D+02 2.019D+01 2.964D+03
4 1.500D+01 2.000D+01 0.000D+00

Updated Tailings Cover Design Report

APPENDIX D

VEGETATION AND BIOTINTRUSION EVALUATION

Updated Tailings Cover Design Report

Energy Fuels Resources (USA) Inc. MWH Americas, Inc.
D-1 August 2015
D.1 INTRODUCTION
This appendix provides an evaluation of vegetation that would be used as an integral part of an
evapotranspiration (ET) cover proposed for reclamation of tailings cells at the White Mesa Mill (Mill) site. A critical component of an ET cover is the plant community that will be established on the cover and will function over the long term to provide protection from wind and water erosion
and assist in removing water through the process of transpiration. In this appendix, issues related to the short-term establishment and long-term sustainability of vegetation proposed as part of the ET cover are addressed. These issues include: plant species selection, ecological characteristics
of species (i.e., longevity, sustainability, compatibility, competition, rooting depth and root distribution), characteristics of the established plant community (i.e., percent plant cover and leaf
area index [LAI]), and soil requirements for sustained plant growth. Information is also presented
on weed control, vegetation performance goals and criteria, and post-closure vegetation monitoring. In addition, biointrusion from both plants and animals is addressed using information
from an on-site survey conducted in June 2012 and literature applicable to site conditions. Finally
there is discussion on climate change projections for the performance period and possible changes that may occur with plant community composition over time.
D.2 PROPOSED SPECIES FOR ET COVER RECLAMATION
The following 15 species (11 grasses, 2 forbs, and 2 shrubs) are proposed for the ET cover system at the Mill site. These species were selected for their adaptability to site conditions,
compatibility, and long-term sustainability. Species were also selected based on the assumption that institutional controls will exclude grazing by domestic livestock. The proposed species are:
• Western wheatgrass, variety Arriba (Pascopyrum smithii)
• Bluebunch wheatgrass, variety Goldar (Pseudoroegneria spicata)
• Slender wheatgrass, variety San Luis (Elymus trachycaulus)
• Streambank wheatgrass, variety Sodar (Elymus lanceolatus ssp. psammophilus)
• Pubescent wheatgrass, variety Luna (Thinopyrum intermedium ssp. barbulatum)
• Indian ricegrass, variety Paloma (Achnatherum hymenoides)
• Sandberg bluegrass, variety Canbar (Poa secunda)
• Sheep fescue, variety Covar (Festuca ovina)
• Squirreltail, variety Toe Jam Creek (Elymus elymoides)
• Blue grama, variety Hachita (Bouteloua gracilis)
• Galleta, variety Viva (Hilaria jamesii)
• Common yarrow, no variety (Achillea millefolium)
• White sage, variety Summit (Artemisia ludoviciana)
• Fourwing saltbush, variety Wytana (Atriplex canescens)
• Rubber rabbitbrush, no variety (Ericameria nauseosus).
These species are described in more detail later in this appendix.
Updated Tailings Cover Design Report

Energy Fuels Resources (USA) Inc. MWH Americas, Inc.
D-2 August 2015
D.3 PROPOSED SEEDING RATES
Given a mixture of the species listed above, Table D.1 presents broadcast seeding rates for each
species. Seeding rates were developed based on the objective of establishing a permanent cover of grasses, forbs, and shrubs in a mixture that would promote compatibility among species and minimize competitive exclusion or loss of species over time. The proposed seeding rate is based
on number of seeds/ft2 and then converted to pounds of pure live seed per acre (lbs PLS/acre), with further discussion presented below.
The number of seeds placed in a unit area of soil is called the seeding rate. The total seeding
rate is the sum of the individual species seeding rates. Seeding rates are normally expressed as the number of seeds per square foot or pounds per acre. Many different seeding rates for the
same species can be found in the literature. The primary reason for these differences is that
some rates are for monocultures and other rates are for diverse mixtures. In addition, seeding rates vary depending on the method of seeding and site conditions related to edpaphic factors,
topography and climate.
Seeding rates are developed on the basis of number of seeds per unit area (e.g. number of seeds per square foot). Once this number is determined, then it can be converted to weight per unit
area (e.g. pounds per acre). Since each species produces seed that weighs a different amount,
the development of seeding rates based purely on weight per unit area will produce erroneous rates that will tend to over emphasize small seeded species and under-emphasize large seeded
species. For example, blue grama has approximately 700,000 seeds per pound, while Indian ricegrass has approximately 175,000 seeds per pound. If seeding rates were calculated simply on the basis of weight per unit area, without recognizing the fact that a pound of blue grama seed
has four times the number of seeds per pound as Indian ricegrass, it would be very easy to over plant blue grama and under plant Indian ricegrass.
Table D.1. Species and Seeding Rates Proposed for ET Cover at the Mill Site
Scientific Name Common Name Varietal Name
Native/
Introduced
Seeding Rate (lbs
PLS/acre)†
Seeding Rate (#
seeds/ft2)
Grasses
Pascopyrum smithii Western wheatgrass Arriba Native 3.0 7.9
Pseudoroegneria
spicata
Bluebunch wheatgrass Goldar Native 3.0 9.6
Elymus trachycaulus Slender wheatgrass San Luis Native 2.0 6.2
Elymus lanceolatus Streambank wheatgrass Sodar Native 2.0 7.3
Elymus elymoides Squirreltail Toe Jam Native 2.0 8.8
Thinopyrum intermedium Pubescent wheatgrass Luna Introduced‡ 1.0 1.8
Achnatherum
hymenoides Indian ricegrass Paloma Native 4.0 14.7
Poa secunda Sandberg bluegrass Canbar Native 0.5 11.4
Festuca ovina Sheep fescue Covar Introduced‡ 1.0 11.5
Bouteloua gracilis Blue grama Hachita Native 1.0 16.5
Hilaria jamesii Galleta Viva Native 2.0 7.3
Forbs
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Scientific Name Common Name Varietal Name
Native/
Introduced
Seeding Rate (lbs PLS/acre)†
Seeding Rate (# seeds/ft2)
Achillea millefolium,
variety occidentalis
Common yarrow VNS* Native 0.5 32
Artemisia ludoviciana White sage VNS Native 0.5 45
Shrubs
Atriplex canescens Fourwing saltbush Wytana Native 3.0 3.4
Ericameria nauseosus Rubber rabbitbrush VNS Native 0.5 4.6
Total 26.5 188
†Seeding rate is for broadcast seed and presented as pounds of pure live seed per acre (lbs PLS/acre).
‡Introduced refers to species that have been ‘introduced’ from another geographic region, typically outside of North America. Also referred to as ‘exotic’ species. *VNS=Variety Not Specified but seed
source would be designated from sites similar to the Mill site.
Seeding rate may be calculated from an expected field emergence for each species and the desired number of plants per unit area. For purposes of calculation, field emergence for small
seeded grasses and forbs is assumed to be around 50 percent if germination is greater than 80 percent. Field emergence is assumed to be around 30 percent if germination is between 60 and 80 percent. The Natural Resource Conservation Service recommends a seeding rate of 20 to 30
pure live seeds per square foot as a minimum number of seeds when drill seeding single species in areas with an annual precipitation between 6 and 18 inches. Twenty pure live seeds per square
foot, with an expected field emergence of 50 percent should produce an adequate number of
plants on the seeded area to control erosion and suppress annual invasion. This seeding rate is primarily for favorable growing conditions, soils that are not extreme in texture, gentle slopes,
north or east facing aspect, good moisture, adequate soil nutrients and single species vs. multiple
species in a mixture. When conditions are less favorable when the seed is broadcast, or when multiple species are in a mixture the seeding rates are increased.
A Quality Assurance/Quality Control Plan for application rates and procedures for confirming that
specified application rates are achieved is as follows. The first step begins with a seed order. Seed would be purchased as pounds of pure live seed. Each State has a seed certifying agency
and certification programs may be adopted by seed growers. Certification of a container of seed
assures the customer that the seed is correctly identified and genetically pure. The State agency responsible for seed certification sets minimum standards for mechanical purity and germination
for each species of seed. When certified, a container of seed must be labeled as to origin, germination percentage, date of the germination test, percentage of pure seed (by weight), other crop and weed seeds, and inert material. The certification is the consumer’s best guarantee that
the seed being purchased meets minimum standards and the quality specified.
Once the seed is obtained, seed labels would be checked to determine the percent PLS and the
date that the seed was tested for percent purity and percent germination. If the test date is greater
than 6 months old, the seed would be tested again before being accepted. Seed will be applied using a broadcasting method. This procedure would use a centrifugal type broadcaster (or similar
implement)), also called an end-gate seeder. These broadcasters operate with an electric motor
and are usually mounted on the back of a small tractor and generally have an effective spreading width of about 20 feet or more. Prior to seeding, a known area will be covered with a tarp and
seed will be distributed using the broadcaster and simulating conditions that would exist under
actual seeding conditions. Seed will then be collected and weighed to determine actual seeding rate in terms of pounds per acre. This process will be repeated until the specified seeding rate is
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obtained. During the seeding process, the seeding rate will be verified at least once by comparing pounds of seed applied to the size of the area seeded. In addition, seed will be applied in two
separate passes. One-half of the seed will be spread in one direction and the other half of seed will be spread in a perpendicular direction. This will ensure that seed distribution across the site is highly uniform and also provide the opportunity to adjust the seeding rate if the specified rate
is not being achieved.
D.4 ECOLOGICAL CHARACTERISTICS OF PROPOSED SPECIES AND ESTABLISHED
PLANT COMMUNITY
D.4.1 Ecological Characteristics of Plant Species of Tailings Cover System
Important ecological characteristics for each species proposed for reclamation are provided in the
paragraphs that follow. Species information was obtained from a number of references that are
cited below. The proposed species are adapted to the elevation (5,600 feet), precipitation (13 inches per year on average), and soil textural ranges (loam to sandy clay) that are well within the
environmental conditions of the Mill site. Table D.2 presents a summary of the ecological
characteristics discussed in the following paragraphs.
Western wheatgrass, variety Arriba (Pascopyrum smithii) – Western wheatgrass is a native,
rhizomatous, long-lived perennial cool season grass. It grows well in a 10- to 14-inch mean
annual precipitation zone and is adapted to a wide range of soil textural classes at elevation ranges up to 9,000 feet. Western wheatgrass has been an important species for restoring mining
related disturbances, for erosion control and for critical area stabilization in semi-arid regions because of its ease of establishment and ability to grow successfully in pure or mixed stands of both warm and cool season species. Western wheatgrass is fire tolerant and regenerates readily
following burning. The variety of Arriba is known for rapidly establishing seedlings and high seed production. The combination of its ability to spread vegetatively and reproduce by seed ensures long-term sustainability of this species.
Bluebunch wheatgrass, variety Goldar (Pseudoroegneria spicata) – Bluebunch wheatgrass is a native, cool season perennial bunch grass. Bluebunch wheatgrass grows on soils that vary
in texture, depth and parent material. It is one of the most important and productive grasses found
in sagebrush communities in the intermountain west. Bluebunch wheatgrass is fire tolerant and regenerates vegetatively following burning. This species is well adapted to a 12- to 14-inch mean
annual precipitation range and is considered to be highly drought resistant. Bluebunch
wheatgrass performs well in mixtures with other species and grows at elevations up to 10,000 feet.
Slender wheatgrass, variety San Luis (Elymus trachycaulus) – Slender wheatgrass is a
native, cool season, perennial bunch grass that occasional produces rhizomes. It is a short-lived species (5 to 10 years) but it reseeds and spreads well by natural seeding, exceeding most other
wheatgrasses in this characteristic. Slender wheatgrass can serve as an important pioneer species; its seedlings are vigorous and capable of establishing on harsh sites. In addition, it is able to establish and compete with weedy species. Slender wheatgrass is commonly seeded in
mixtures with other grasses and forbs to restore disturbances and rehabilitate native communities. It is adapted to a wide variety of sites and is moderately drought tolerant. It performs best at sites with an annual precipitation of 15 inches or more, but can grow on sites with precipitation levels
as low as 13 inches.
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Table D.2. Summary of Ecological Characteristics of Plant Species Proposed for the ET Cover at the Mill Site

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Western wheatgrass Native Perennial Vegetative 4 3 4 10-14 ≤9,000 S,C,L 109d 4 4 4
Bluebunch wheatgrass Native Perennial Seed 4 4 4 12-14 ≤10,000 S,C,L 122e 4 4 4
Slender wheatgrass Native Perennial Seed 4 4 2 13-18 ≤10,000 S,C,L 109d 2 2 2
Streambank wheatgrass Native Perennial Vegetative 4 4 4 11-18 ≤10,000 S,C,L 165f 4 4 3
Pubescent
wheatgrass Introduced Perennial Vegetative 4 2 4 12-18 ≤10,000 S,C,L 185d 4 4 3
Indian ricegrass Native Perennial Seed 3 4 4 6-16 ≤10,000 S,L 84g 2 4 2
Sandberg bluegrass Native Perennial Seed 4 4 4 12-18 ≤12,000 S,C,L 45h 2 3 4
Sheep fescue Introduced Perennial Seed 4 2 4 10-14 ≤11,000 S,C, L 56e 3 4 2
Squirreltail Native Perennial Seed 3 4 3 8-15 ≤11,000 S,C,L 30c,i 2 4 3
Blue grama Native Perennial Vegetative 2 4 4 10-16 ≤10,000 S,L 119g 4 4 4
Galleta Native Perennial Vegetative 3 4 4 6-18 ≤8,000 S,C,L 30j 4 4 4
Common yarrow Native Perennial Vegetative 4 3 4 13-18 ≤11,000 S,C,L 105h 4 3 2
White sage Native Perennial Vegetative 4 4 4 12-18 ≥5,000 S,C,L 20c,i 3 3 2
Fourwing saltbush Native Perennial Seed 4 4 4 8-14 ≤8,000 S,L 600j 4 4 1
Rubber rabbitbrush Native Perennial Seed 4 4 4 7-18 ≤9,000 S,C,L 150k 4 4 1
aKey to Ratings—4 = Excellent, 3 = Good, 2 = Fair, 1 = Poor bSoil Texture Codes—S = Sand, C = Clay, L = Loam cDepth represents minimum depth; no information in the literature on average or maximum depth could be found.
dWyatt et al., 1980. eWeaver and Clements, 1938. fCoupland and Johnson, 1965.
gFoxx and Tierney, 1987. hSpence, 1937. iUSDA, 2012.
jGibbens and Lenz 2001 kMonsen et al., 2004.
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Streambank wheatgrass, variety Sodar (Elymus lanceolatus ssp. psammophilus) –
Streambank wheatgrass is considered to be part of the thickspike wheatgrass (Elymus
lanceolatus ssp. lanceolatus) taxa. Variety Sodar is a native, perennial sod grass that is highly rhizomatous and adapted to the western intermountain area. It is highly drought tolerant and performs well in mean annual precipitation ranges between 11 and 18 inches. It grows on a wide
range of soil textures, from sandy to clayey. Streambank wheatgrass is commonly used in mine land reclamation and is best known for its ability to control erosion and compete with annual weeds. Its highly rhizomatous nature ensures long-term sustainability of this species.
Pubescent wheatgrass, variety Luna (Thinopyrum intermedium ssp. barbulatum) – Pubescent wheatgrass is a long-lived sod forming perennial introduced from Eurasia. It is highly
drought tolerant and grows where the mean annual precipitation is 12 inches or more. It is
adapted to a wide range of soil textures, from sand to clay. Pubescent wheatgrass is a highly persistent species, should be seeded at low densities to avoid competition with native species.
Indian ricegrass, variety Paloma (Achnatherum hymenoides) – Indian ricegrass is a native,
cool season, perennial bunchgrass with a highly fibrous root system. Indian ricegrass is one of the most common grasses on semi-arid lands in the west and is one of the most drought tolerant
species used in mine land reclamation. It generally occurs on sandy soils, but is found on soils
ranging from sandy to heavy clays. It grows from 2,000 to 10,000 feet in areas where the mean annual precipitation is 6 to 16 inches. Indian ricegrass is slow to establish, but highly persistent
once it becomes established.
Sandberg bluegrass, variety Canbar (Poa secunda) – Sandberg bluegrass is a native, cool
season perennial bunchgrass that is adapted to all soil textures and is highly resistant to fire
damage. Sandberg bluegrass is one of the more common early-season bunchgrasses in the Intermountain area. It grows at elevations from 1,000 to 12,000 feet and can be successfully established in areas with a mean annual precipitation of 12 inches or more. Established plants
are not overly competitive, and therefore highly compatible with other native species.
Sheep fescue, variety Covar (Festuca ovina) – Sheep fescue is a short, mat-forming introduced
perennial that grows well on infertile soils in areas with a mean annual precipitation of 10 to 14
inches. It is long-lived and highly drought tolerant. Sheep fescue is a cool season species that greens up early in the spring. The proposed variety, Covar, was introduced from Turkey and is
commonly used in mine land reclamation for long-term stabilization and erosion control. This
variety was selected because plants are persistent, winter hardy, and drought tolerant.
Squirreltail, variety Toe Jam Creek (Elymus elymoides) – Squirreltail is a short-lived perennial
that is selected for its ability to establish quickly and to effectively compete with undesirable annual
grasses. It grows along an elevation range from 2,000 to 11,000 feet and on all soil textures in mean annual precipitations zones of 8 to 15 inches. Squirreltail is fairly tolerant of fire because
of its small size.
Blue grama, variety Hachita (Bouteloua gracilis) – Blue grama is a low-growing perennial
warm season bunchgrass. Blue grama produces an efficient, widely spreading root system that
is mostly concentrated near the soil surface. Blue grama is adapted to a variety of soil types, but does best on well-drained soils and once established, is highly drought tolerant. This species is commonly found with cool-season species and is highly compatible with other native perennials.
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Galleta, variety Viva (Hilaria jamesii) – Galleta is a strongly rhizomatous perennial warm season
grass with a dense, fibrous root system. Galleta grows on sits receiving 6 to 18 inches of annual
precipitation with soils ranging from coarse to fine. Plants have a low requirement for soil fertility and are drought and fire tolerant.
Common yarrow (Achillea millefolium, var. occidentalis) – Yarrow is a common native forb
species that is rhizomatous and found growing from valley bottoms to timberline. It is commonly used in mine land reclamation, establishes easily from seed and is highly persistent. It grows on a variety of soil textures and found in a mean annual precipitation range between 13 and 18
inches. If seed is not available for Achillea millefolium var. occidentalis, then the introduced Achillea millefolium would be used, which has the same growth characteristics as the native form.
White sage, variety Summit (Artemisia ludoviciana) – White sage is considered to be a
pioneer rhizomatous forb species that establishes quickly on disturbed sites and is highly compatible with perennial grasses. It does best on well-drained soils, but can be found growing
on a wide range of soil textures. It is adapted to sites above 5,000 feet in elevation and to sites
with a mean annual precipitation above 12 inches.
Fourwing saltbush, variety Wytana (Atriplex canescens) – Fourwing saltbush can be
deciduous or evergreen, depending on climate. Its much-branched stems are stout and mature
plants range from 1 to 8 feet in height, depending on ecotype, the soil, and climate. Fourwing
saltbush is one of the most widely distributed and important native shrubs on rangelands in the
western United States. Fourwing saltbush is highly palatable browse and is utilized primarily in
the winter at which time it is high in carotene and digestible protein. Fourwing saltbush provides
excellent season long browse for deer. It is a good browse plant for antelope and elk in fall and
winter. It is also a food source and excellent cover for upland birds. Fourwing saltbush has
excellent drought tolerance. Fourwing saltbush is adapted to most soils but is best suited to loamy
to sandy to gravely soils. It is not especially tolerant of fire, but may re-sprout to some degree if
fire intensity is not too severe. Fourwing saltbush occurs most commonly in salt-desert scrub
communities in the desert areas of western North America in areas that receive 8 to 14 inches of
annual precipitation. It can be found from sea level in Texas to over 8,000 feet in Wyoming.

Rubber rabbitbrush (Ericameria nauseosus) – Rubber rabbitbrush is a native, perennial,
warm-season shrub that grows to 1 to 8 feet tall. Rubber rabbitbrush is an important browse
species for wildlife during the winter months. Rubber rabbitbrush occurs as a dominant to minor
component in many plant communities, ranging from arid rangelands to montane openings. It
thrives in poor conditions, and can tolerate coarse, alkaline soils. Dense stands are often found
on degraded rangelands, along roadsides, and in abandoned agricultural fields. The species is
useful in soil stabilization and restoration of disturbed sites. The root system establishes quickly
and plants produce large quantities of leaf litter. Rubber rabbitbrush is adapted to cold, dry
environments receiving 7 to 18 inches of annual precipitation at elevations ranging from 450 to
8,000 feet. Depending on the ecotype, rubber rabbitbrush can be found on loamy, sandy, gravelly
or heavy clay soils that are slightly acidic, slight to strongly basic, or saline.

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D.4.2 Longevity and Sustainability
All of the species proposed for reclamation of the tailings cells are long-lived, except for slender
wheatgrass (Elymus trachycaulus) and squirreltail (Elymus elymoides). Slender wheatgrass is a perennial bunchgrass that is short-lived (5 to 10 years) but has the ability to reseed and spread vegetatively with rhizomes. Squirreltail is also a short-lived perennial but has the ability to
establish quickly and is highly effective in competing with undesirable annual grasses. Both of these species are included in the proposed seed mixture because of their ability to provide quick cover for erosion protection and to effectively compete with annual and biennial species that
cannot be relied upon to provide consistent and sustainable plant cover. The use of these species will facilitate the establishment of the remaining long-lived perennials that have been documented
to be highly adapted to the elevation, climate, and soil conditions found at the Mill site (Monsen
et al., 2004; Alderson and Sharp, 1994; Wasser, 1982; Thornburg, 1982).
The perennial grasses, forbs, and shrubs in the proposed seed mixture include species that
develop individual plants that are long lived (30 years or more) and are able to reproduce either
by seed or vegetative plant parts like rhizomes and tillers. The use of these species in reclamation of the tailings cells will ensure a permanent or sustainable plant cover because of the highly
adapted nature of these species to site conditions, their tolerance to environmental stresses such
as drought, fire, and herbivory, and their ability to effectively reproduce over time.
The use of a mixture of species for the ET cover also contributes to longevity and sustainability.
The establishment of a diverse community has many advantages over a monoculture for sustained plant growth. The use of a variety of species ensures that diverse microsites that may exist over a seeded site are properly matched with species that are adapted to those specific
environmental conditions. In addition, a mixture of species reverses the loss of plant diversity and enhances natural recovery processes following impacts from insects, disease organisms, and adverse or changes in climatic conditions. Finally, mixtures provide improved ground cover
and surface stability, along with reducing weed invasion by fully utilizing plant resources such as water, nutrients, sunlight and space. Weeds in this context are typically annual or biennial plants
considered to be undesirable, especially growing where they are not wanted.
D.4.3 Compatibility
Reclamation research and its application have been ongoing in the U.S. since the early 1900s.
First with the reseeding of millions of acres following the dust bowl of the 1930s. Then,
improvements of large tracts of arid and semi-arid rangelands between the 1960s and 1980s following more than a half a century of rangeland exploitation through overgrazing. In 1985 the
U.S. Department of Agriculture Conservation Reserve Program was implemented which resulted
in the conversion of more than 40 million acres of marginal farm land to permanent grasslands through an extensive seeding program. Finally, there have been tens of thousands of acres of
mined lands reclaimed across the U.S. with the implementation of federal and state rules and regulations governing mine land reclamation. Over this time period, there have been thousands of reclamation publications in the form of books, scientific journal articles, symposium
proceedings, and government publications. Many publications have reported on the performance of individual species and mixtures of species under semi-arid conditions similar to southeastern Utah (e.g., Plummer et al., 1968; Monsen et al., 2004). All of this work has led to a knowledge
base about species compatibility. Species that are seeded together in mixtures must be compatible as young, developing plants or certain individuals will succeed and others will fail. The
species proposed for the ET cover at the Mill site are all compatible with each other and seeding
rates will be used to prevent overseeding species that may be aggressive [e.g., pubescent wheatgrass (Thinopyrum intermedium)] and could potentially dominate the site (Monsen et al.,
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2004). These species are commonly seeded together and many studies have shown excellent interspecies compatibility (e.g., DePuit et al., 1978; DePuit, 1982; Redente et al., 1984; Sydnor
and Redente, 2000; Newman and Redente, 2001). Finally, to increase compatibility and to reduce competition among seeded species, sites would be broadcast seeded as opposed to drill seeded. According to Monsen et al. (2004), drill seeding causes species in a mixture to be placed in
potentially competitive situations, while broadcasted seeds are not placed in as close contact with each other as with drilling and therefore are less likely to be negatively impacted from competition.
D.4.4 Competition
There are two ways to view competition. In the context of establishing an ET cover on the tailings cells, the use of seeded species to compete with weeds is a desirable attribute. However,
competition among seeded species with the potential loss of any of these species is undesirable.
Therefore, as stated earlier, the proposed seed mixtures is comprised of species that can coexist and also fully utilize plant resources to minimize weed species establishment and excluding
seeded species. The establishment of weeds, especially invasives (i.e., non-native species
whose introduction causes economic and environmental harm) is unacceptable because of the potential loss of seeded perennial species and the subsequent reduction in species diversity,
plant cover, and overall sustainability. Once established, the proposed seed mixture will produce
a grass-forb-shrub community of highly adapted and productive species that will effectively compete with undesirable species.
D.4.5 Plant Cover
Monitoring of an alternative cover at the Monticello, Utah, Uranium Mill Tailings Disposal Site showed that the plant cover performed well over a seven year period. Plant cover ranged from
5.5 percent during the first growing season to nearly 46 percent in the seventh growing season (Waugh et al., 2008). Using results from the 2007 vegetation monitoring report (DOE, 2008) the following contributions to relative cover were reported showing that 6 of the 16 species seeded
provided 70 percent or more of the cover when cover differences between reclamation zones is averaged: big sagebrush—5 percent to 10 percent; rubber rabbitbrush—5.3 percent to 17
percent; western wheatgrass—38.6 percent; cicer milkvetch—11 percent; thickspike
wheatgrass—7.2 percent; and globemallow—0.1 to 0.2 percent.
Approximately 40 percent of the species proposed for the Mill site were seeded at Monticello and
of the six best-performing species, three of these species are in the White Mesa mixture (i.e.
Pascopyrum smithii, Elymus lanceolatus, and Ericameria nauseosus ). Highly competitive species used at Monticello that are not proposed for White Mesa include three introduced species
(i.e. smooth brome, crested wheatgrass, and alfalfa) that were not considered acceptable for the
Mill site. Based on these results and the similarity in environmental conditions between Monticello and White Mesa, a plant cover estimate of 40 percent was determined to be a reasonable estimate
for a long-term average, while a percent plant cover of 30 percent was assigned as a reduced performance scenario. The percent vegetative cover at White Mesa is expected to be slightly less than what would be found at Monticello because the average annual precipitation at White
Mesa is approximately 13 inches compared to 15 inches at Monticello and the average annual maximum/minimum air temperatures are 64/37oF for White Mesa and 59/33oF for Monticello. The slightly greater precipitation and lower temperatures at Monticello are due to its slightly higher
elevation of 7,000 feet compared to 5,600 feet at White Mesa.
A map of current vegetation at the Mill site does not exist. The most recent mapping of vegetation at the Mill site was conducted by Dames and Moore in 1977 (Dames and Moore 1978) as part of
the Environmental Report for the White Mesa Uranium Project. In 1977, the major mapping units
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for the project site were: big sagebrush (232 acres), controlled big sagebrush (567 acres), and reseeded grassland (369 acres). In June 2012 the area surrounding the Mill site was surveyed
for plant community composition and cover in response to Interrogatory 11/1: Vegetation and Biointrusion Evaluation and Revegetation Plan of DRC (2012). There are two principal plant community types in the vicinity of the Mill site. These plant communities are Big Sagebrush
shrubland and Juniper woodland. The Dames and Moore Environmental Report (1978) classified the Juniper woodland as a Pinyon-Juniper community type, but the primary tree species is Utah juniper (Juniperus osteosperma) and the presence of pinyon pine (Pinus edulis) is so infrequent
that the community may be more appropriately classified as a Juniper woodland. In addition to these two principal plant community types, there are a number of disturbed areas that are in
different stages of successional development and reflect past disturbances such as sagebrush
removal (chaining and plowing) and seeding and intense grazing as evidenced by a complete lack of any understory species in some areas. The vegetation survey conducted in 2012 provides
information of species that exist on the Mill site and their relative importance in terms of plant
cover. All areas surveyed in 2012 show that big sagebrush (Artemisia tridentata) is the dominant species and subdominants are either broom snakeweed (Gutierrezia sarothroae) or galleta
(Hilaria jamesii). If the area were re-mapped, most of the site would map as Big Sagebrush
association. It appears that areas that were reseeded to crested wheatgrass and areas where controlled measures were applied to remove big sagebrush have returned to big sagebrush
following seeding and/or control measures implemented sometime prior to 1978.
The Big Sagebrush shrubland is dominated by big sagebrush (Artemisia tridentata) with interspersed shrubs of broom snakeweed (Gutierrezia sarothroae) pale desert-thorn (Lycium
pallidum var. pallidum), and rubber rabbitbrush (Ericameria nauseosa). The understory is mostly grasses with an infrequent occurrence of forbs. The grasses include galleta (Hilaria jamesii), squirreltail (Elymus elymoides), Indian ricegrass (Achnatherum hymenoides), and cheatgrass
(Bromus tectorum). Forb species include scarlet globemallow (Sphaeralcea coccinea), lesser rushy milkvetch (Astragalus convallarius), and Russian thistle (Salsola kali).
The Juniper woodland occurs on shallow soils along the canyon rim to the east and west of the
site. It is highly unlikely that this community type would expand its range into the deep, very fine sandy loam soil that occurs on the Mill site, which is the primary soil type supporting the Big
Sagebrush shrubland. The vegetation sampling that was conducted in 2012 focused on the Big
Sagebrush community and did not include the Juniper woodland because of the unlikely probability that this community type would ever establish on the Mill site or tailings cell cover
system. A reconnaissance level survey was conducted in the Juniper community to observe both
plant and animal species that occupy these areas.
D.4.6 2012 Plant Survey
The big sagebrush community type within the White Mesa Control Area to the north, south, and west of the restricted area of the mill and tailings facilities was surveyed using randomly placed transects and estimating cover by species using a point intercept sampling method (see Figure
D.1). Along each 100 m long transect, live plant cover by species was determined by lowering a pin at 1 meter intervals and recording the plant species or ground cover (litter and bareground) that intersected the point. A total of 10 transects were sampled in each of the areas to the north,
south and west of the mill and tailings cells. Table D.3 presents a summary of the vegetation survey conducted in the areas surrounding the mill and tailings cells. Tables D.4 through D.33
present plant cover data by transect for each of the three areas sampled in 2012.

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Table D.3. Average Plant and Ground Cover from June 2012 Sampling in Areas
Surrounding the Mill Site

Site and Plant Species % Cover
North of Mill
o Big sagebrush (Artemisia tridentata) 19.1
o Broom snakeweed (Gutierrezia sarothroae) 3.9
o Rubber rabbitbrush (Ericameria nauseosa). 0.2
o Palm desert-thorn (Lycium pallidum var. pallidum) 0.1
o Galleta (Hilaria jaamesii) 3.6
o Squirreltail (Elymus elymoides) 0.1
o Indian ricegrass (Achnatherum hymenoides) 0.1
o Cheatgrass (Bromus tectorum) 9.5
o Scarlet globemallow (Sphaeralcea coccinea) 0.1
o Lesser rushy milkvetch (Astragalus convallarius) 0.1
o Russian thistle (Salsola kali) 0.6
Total Live Cover 37.4
Total Litter Cover 9.7
Total Bareground 53.1

South of Mill
o Big sagebrush (Artemisia tridentata) 18.3
o Broom snakeweed (Gutierrezia sarothroae) 3.0
o Galleta (Hilaria jaamesii) 8.5
o Squirreltail (Elymus elymoides) 0.3
o Indian ricegrass (Achnatherum hymenoides) 0.1
o Cheatgrass (Bromus tectorum) 6.7
o Scarlet globemallow (Sphaeralcea coccinea) 0.1
o Russian thistle (Salsola kali) 1.4
Total Live Cover 38.4
Total Litter Cover 13.4
Total Bareground 48.2

West of Mill
o Big sagebrush (Artemisia tridentata) 20.5
o Broom snakeweed (Gutierrezia sarothroae) 4.4
o Pale desert-thorn (Lycium pallidum var. pallidum) 0.1
o Galleta (Hilaria jaamesii) 6.6
o Squirreltail (Elymus elymoides) 0.1
o Indian ricegrass (Achnatherum hymenoides) 0.1
o Cheatgrass (Bromus tectorum) 5.3
o Scarlet globemallow (Sphaeralcea coccinea) 0.1
o Russian thistle (Salsola kali) 0.8
Total Live Cover 37.9
Total Litter Cover 16.1
Total Bareground 46.0

Results from the 2012 sampling of the Big Sagebrush community surrounding the Mill site showed a mean live plant cover of 37.8 percent after averaging live plant cover estimated in areas north, south and west of the Mill site (Table D.3). This plant cover included an average of 23.1 percent
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cover for shrubs, 13.7 percent cover for grasses, and 1.0 percent cover for forbs. In addition, the average percent litter was 13.1 percent and bareground averaged 49.1 percent. These cover
estimates are somewhat greater than the cover values reported in Dames and Moore Environmental Report (1978). In the Environmental Report, the average live plant cover in the Big Sagebrush community was 33.3 percent. This cover included an average of 19.4 percent for
shrubs and 13.8 percent for grasses. Litter was estimated at 16.9 percent and bareground was 49.9 percent. Annual precipitation in 1977 was 23.6 cm compared to a long-term average of 29.7 cm (Dames and Moore 1978). In addition, monthly precipitation during the period May-September
1978 totaled 3.8 cm compared to a long-term average of 12.5 cm for the same period. Considering the fact that the areas sampled are currently grazed, it is highly likely that a cover of
40 percent can be achieved and maintained on the tailings cell cover system for conditions that
exclude grazing by livestock. The formation of desert pavement and potential impact on plant cover has been raised as an issue for discussion. Desert pavements are armored surfaces
composed of angular or rounded rock fragments, usually 2 to 3 cm thick, set on or in a matrix of
finer material (Cooke and Warren, 1973). These surfaces form on arid soils through deflation of fine material by wind or water erosion due to a lack of protection by surface vegetation (Cooke
and Warren, 1973). Desert pavements are not common in semi-arid regions and do not occur
where either wind or water erosion are controlled by plant cover (Hendricks, 1991), as would be the case for the White Mesa cover system. In addition, there is no evidence of desert pavement
formation either on the Mill site or areas surrounding the site (which was confirmed during the 2012 plant survey). Even with the use of a topsoil layer amended with gravel, there is no supporting evidence to indicate a potential for desert pavement formation or an associated
decrease in plant cover over the long term.
Table D.4. Plant cover data collected in 2012 north of the Mill site on Transect #1

Species and Other Cover Categories Percent Cover
Big sagebrush (Artemisia tridentata) 20
Broom snakeweed (Gutierrezia sarothroae) 7
Galleta (Hilaria jaamesii) 6
Cheatgrass (Bromus tectorum) 13
Russian thistle (Salsola kali) 1

Litter 8
Bareground 45
Total Live Cover 47

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Table D.5. Plant cover data collected in 2012 north of the Mill Site on Transect #2

Species and Other Cover Categories Percent Cover
Big sagebrush (Artemisia tridentata) 28
Broom snakeweed (Gutierrezia sarothroae) 9
Rubber rabbitbrush (Ericameria nauseosa). 1
Galleta (Hilaria jaamesii) 2
Cheatgrass (Bromus tectorum) 8
Scarlet globemallow (Sphaeralcea coccinea) 1
Russian thistle (Salsola kali) 1

Litter 11
Bareground 39
Total Live Cover 50

Table D.6. Plant cover data collected in 2012 north of the Mill site on Transect #3
Species and Other Cover Categories Percent Cover
Big sagebrush (Artemisia tridentata) 13
Rubber rabbitbrush (Ericameria nauseosa). 1
Galleta (Hilaria jaamesii) 6
Cheatgrass (Bromus tectorum) 9

Litter 7
Bareground 63
Total Live Cover 30
Table D.7. Plant cover data collected in 2012 north of the Mill site on Transect #4

Species and Other Cover Categories Percent Cover
Big sagebrush (Artemisia tridentata) 27
Galleta (Hilaria jaamesii) 3
Cheatgrass (Bromus tectorum) 13
Russian thistle (Salsola kali) 2

Litter 8
Bareground 47
Total Live Cover 45

Table D.8. Plant cover data collected in 2012 north of the Mill site on Transect #5
Species and Other Cover Categories Percent Cover
Big sagebrush (Artemisia tridentata) 31
Broom snakeweed (Gutierrezia sarothroae) 8
Indian ricegrass (Achnatherum hymenoides) 1
Lesser rushy milkvetch (Astragalus convallarius) 1
Russian thistle (Salsola kali) 1

Litter 9
Bareground 49
Total Live Cover 42

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Table D.9. Plant cover data collected in 2012 north of the Mill site on Transect #6

Species and Other Cover Categories Percent Cover
Big sagebrush (Artemisia tridentata) 6
Broom snakeweed (Gutierrezia sarothroae) 6
Squirreltail (Elymus elymoides) 1
Cheatgrass (Bromus tectorum) 9
Russian thistle (Salsola kali) 1

Litter 6
Bareground 71
Total Live Cover 23
Table D.10. Plant cover data collected in 2012 north of the Mill site on Transect #7
Species and Other Cover Categories Percent Cover
Big sagebrush (Artemisia tridentata) 8 Broom snakeweed (Gutierrezia sarothroae) 6 Galleta (Hilaria jaamesii) 4 Cheatgrass (Bromus tectorum) 7

Litter 12
Bareground 63
Total Live Cover 25 Table D.11. Plant cover data collected in 2012 north of the Mill site on Transect #8
Species and Other Cover Categories Percent Cover
Big sagebrush (Artemisia tridentata) 29
Galleta (Hilaria jaamesii) 11
Cheatgrass (Bromus tectorum) 14

Litter 14
Bareground 32
Total Live Cover 54

Table D.12. Plant cover data collected in 2012 north of the Mill site on Transect #9
Species and Other Cover Categories Percent Cover
Big sagebrush (Artemisia tridentata) 4
Broom snakeweed (Gutierrezia sarothroae) 2
Indian ricegrass (Achnatherum hymenoides) 1
Galleta (Hilaria jaamesii) 4
Cheatgrass (Bromus tectorum) 6

Litter 9
Bareground 74
Total Live Cover 17

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Table D.13. Plant cover data collected in 2012 north of the Mill site on Transect #10

Species and Other Cover Categories Percent Cover
Big sagebrush (Artemisia tridentata) 24
Palm desert-thorn (Lycium pallidum var. pallidum) 1
Cheatgrass (Bromus tectorum) 16

Litter 13
Bareground 46
Total Live Cover 41
Table D.14. Plant cover data collected in 2012 south of the Mill site on Transect #1
Species and Other Cover Categories Percent Cover
Big sagebrush (Artemisia tridentata) 12 Broom snakeweed (Gutierrezia sarothroae) 4 Galleta (Hilaria jaamesii) 7 Cheatgrass (Bromus tectorum) 12 Russian thistle (Salsola kali) 3

Litter 14
Bareground 48
Total Live Cover 38 Table D.15. Plant cover data collected in 2012 south of the Mill site on Transect #2
Species and Other Cover Categories Percent Cover
Big sagebrush (Artemisia tridentata) 15
Broom snakeweed (Gutierrezia sarothroae)
Galleta (Hilaria jaamesii) 17
Cheatgrass (Bromus tectorum) 7
Russian thistle (Salsola kali) 2

Litter 19
Bareground 40
Total Live Cover 41
Table D.16. Plant cover data collected in 2012 south of the Mill site on Transect #3
Species and Other Cover Categories Percent Cover
Big sagebrush (Artemisia tridentata) 14
Rubber rabbitbrush (Ericameria nauseosa). 7
Galleta (Hilaria jaamesii) 8
Scarlet globemallow (Sphaeralcea coccinea) 1
Cheatgrass (Bromus tectorum) 6
Russian thistle (Salsola kali) 2

Litter 16
Bareground 46
Total Live Cover 38

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Table D.17. Plant cover data collected in 2012 south of the Mill site on Transect #4

Species and Other Cover Categories Percent Cover
Big sagebrush (Artemisia tridentata) 28
Galleta (Hilaria jaamesii) 4
Indian ricegrass (Achnatherum hymenoides) 1
Cheatgrass (Bromus tectorum) 1
Russian thistle (Salsola kali) 1

Litter 17
Bareground 48
Total Live Cover 35

Table D.18. Plant cover data collected in 2012 south of the Mill site on Transect #5
Species and Other Cover Categories Percent Cover
Big sagebrush (Artemisia tridentata) 6
Galleta (Hilaria jaamesii) 6
Squirreltail (Elymus elymoides) 3
Cheatgrass (Bromus tectorum) 11

Litter 14
Bareground 60
Total Live Cover 26
Table D.19. Plant cover data collected in 2012 south of the Mill site on Transect #6

Species and Other Cover Categories Percent Cover
Big sagebrush (Artemisia tridentata) 26
Broom snakeweed (Gutierrezia sarothroae) 8
Galleta (Hilaria jaamesii) 8
Cheatgrass (Bromus tectorum) 5

Litter 8
Bareground 45
Total Live Cover 47

Table D.20. Plant cover data collected in 2012 south of the Mill site on Transect #7
Species and Other Cover Categories Percent Cover
Big sagebrush (Artemisia tridentata) 23
Cheatgrass (Bromus tectorum) 6
Russian thistle (Salsola kali) 3

Litter 12
Bareground 56
Total Live Cover 32

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Table D.21. Plant cover data collected in 2012 south of the Mill site on Transect #8

Species and Other Cover Categories Percent Cover
Big sagebrush (Artemisia tridentata) 13
Galleta (Hilaria jaamesii) 13
Cheatgrass (Bromus tectorum) 11
Russian thistle (Salsola kali) 3

Litter 16
Bareground 44
Total Live Cover 40

Table D.22. Plant cover data collected in 2012 south of the Mill site on Transect #9
Species and Other Cover Categories Percent Cover
Big sagebrush (Artemisia tridentata) 18
Broom snakeweed (Gutierrezia sarothroae) 8
Galleta (Hilaria jaamesii) 9
Cheatgrass (Bromus tectorum) 2

Litter 14
Bareground 49
Total Live Cover 37
Table D.23. Plant cover data collected in 2012 south of the Mill site on Transect #10

Species and Other Cover Categories Percent Cover
Big sagebrush (Artemisia tridentata) 29
Broom snakeweed (Gutierrezia sarothroae) 2
Galleta (Hilaria jaamesii) 13
Cheatgrass (Bromus tectorum) 6

Litter 4
Bareground 46
Total Live Cover 50

Table D.24. Plant cover data collected in 2012 west of the Mill site on Transect #1
Species and Other Cover Categories Percent Cover
Big sagebrush (Artemisia tridentata) 26
Broom snakeweed (Gutierrezia sarothroae) 6
Galleta (Hilaria jaamesii) 4
Cheatgrass (Bromus tectorum) 7

Litter 13
Bareground 44
Total Live Cover 43

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Table D.25. Plant cover data collected in 2012 west of the Mill site on Transect #2

Species and Other Cover Categories Percent Cover
Big sagebrush (Artemisia tridentata) 26
Galleta (Hilaria jaamesii) 9
Cheatgrass (Bromus tectorum) 1

Litter 18
Bareground 46
Total Live Cover 36

Table D.26. Plant cover data collected in 2012 west of the Mill site on Transect #3
Species and Other Cover Categories Percent Cover
Big sagebrush (Artemisia tridentata) 9
Cheatgrass (Bromus tectorum) 11

Litter 23
Bareground 57
Total Live Cover 20
Table D.27 Plant cover data collected in 2012 west of the Mill site on Transect #4

Species and Other Cover Categories Percent Cover
Big sagebrush (Artemisia tridentata) 33
Broom snakeweed (Gutierrezia sarothroae) 13
Galleta (Hilaria jaamesii) 7
Scarlet globemallow (Sphaeralcea coccinea) 1
Cheatgrass (Bromus tectorum) 4
Russian thistle (Salsola kali) 4

Litter 9
Bareground 39
Total Live Cover 62

Table D.28. Plant cover data collected in 2012 west of the Mill site on Transect #5
Species and Other Cover Categories Percent Cover
Big sagebrush (Artemisia tridentata) 29
Galleta (Hilaria jaamesii) 6
Squirreltail (Elymus elymoides) 1
Cheatgrass (Bromus tectorum) 5
Russian thistle (Salsola kali) 2

Litter 14
Bareground 43
Total Live Cover 43

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Table D.29. Plant cover data collected in 2012 west of the Mill site on Transect #6

Species and Other Cover Categories Percent Cover
Big sagebrush (Artemisia tridentata) 12
Broom snakeweed (Gutierrezia sarothroae) 9
Indian ricegrass (Achnatherum hymenoides) 1
Cheatgrass (Bromus tectorum) 7
Russian thistle (Salsola kali) 2

Litter 17
Bareground 52
Total Live Cover 31

Table D.30. Plant cover data collected in 2012 west of the Mill site on Transect #7

Species and Other Cover Categories Percent Cover
Big sagebrush (Artemisia tridentata) 14
Broom snakeweed (Gutierrezia sarothroae) 4
Galleta (Hilaria jaamesii) 14
Palm desert-thorn (Lycium pallidum var. pallidum) 1
Cheatgrass (Bromus tectorum) 6

Litter 14
Bareground 37
Total Live Cover 39
Table D.31. Plant cover data collected in 2012 west of the Mill site on Transect #8

Species and Other Cover Categories Percent Cover
Big sagebrush (Artemisia tridentata) 22
Broom snakeweed (Gutierrezia sarothroae) 7
Cheatgrass (Bromus tectorum) 6

Litter 20
Bareground 45
Total Live Cover 35

Table D.32. Plant cover data collected in 2012 west of the Mill site on Transect #9
Species and Other Cover Categories Percent Cover
Big sagebrush (Artemisia tridentata) 14
Broom snakeweed (Gutierrezia sarothroae) 2
Galleta (Hilaria jaamesii) 11
Cheatgrass (Bromus tectorum) 3

Litter 19
Bareground 51
Total Live Cover 30

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Table D.33. Plant cover data collected in 2012 west of the Mill site on Transect #10

Species and Other Cover Categories Percent Cover
Big sagebrush (Artemisia tridentata) 19
Broom snakeweed (Gutierrezia sarothroae) 3
Galleta (Hilaria jaamesii) 15
Cheatgrass (Bromus tectorum) 3

Litter 14
Bareground 46
Total Live Cover 40

D.4.7 Leaf Area Index
Monthly leaf area index (LAI) values were estimated for the proposed ET cover at the Mill site.
Three primary publications were used to estimate monthly LAI for the ET cover, including:
Groeneveld (1997), Scurlock et al. (2001), and Fang et al. (2008). Table D.34 presents a
compilation of LAI values based on North American data sets that were focused on semi-arid
herbaceous plant communities. Scurlock et al. (2001) presented mean LAI values for 15
biomes/land cover classes that included desert, grassland, and shrubland. Leaf Area Index data
was a compilation of data from the literature and represented various data collection methods.
Mean LAI values reported were 1.3 (S.D. 0.85) for desert, 2.6 (S.D. 3.0) for grassland, and 2.1
(S.D. 1.6) for shrubland. Fang et al. (2008) presented LAI data for various biomes using MODIS
(Moderate Resolution Imaging Spectroradiometer). These authors reported monthly LAIs for
grasslands and shrublands with peak values for shrubland reported at 1.5 and 1.0 for grasslands.
Finally, Groeneveld (1997) conducted field measurements of LAI in Owens Valley, CA in 1983.
He reported LAI values for individual grass and shrub species and reported the following values
in November for big sagebrush and in July for the remaining species: big sagebrush LAI’s ranged
from 0.65 to 1.8; fourwing saltbush (Atriplex canescens) LAI’s ranged from 1.2 to 4.7; shadscale
saltbush (Atriplex confertifolia) LAI’s ranged from 1.6 to 2.6; greasewood (Sarcobatus
vermiculatus) LAI’s ranged from 1.0 to 3.3; alkali sacaton (Sporobolus airoides) LAI’s ranged from
0.38 to 4.0; and saltgrass (Distichlis spicata) LAI’s ranged from 0.67 to 3.9. All of the data
presented in these three papers was used to estimate an average monthly LAI for the revegetated
cover system assuming a well-established plant community. A maximum LAI of 2.6 was selected
for peak biomass in the month of September which matches the mean grassland LAI reported by
Scurlock al. (2001) and well below values reported by Groeneveld (1997). Leaf Area Index values
for the remaining months was then extrapolated from the peak month using monthly values
presented by Fang et al. (2008). It is important to note that the proposed species for the ET cover
include both cool- and warm-season species. This combination of species will maximize the
length of the growing season and transpiration from early spring to late fall. Cool-season species
are more productive and use more water during the cooler times of the growing season, while
warm-season species are more productive and use more water during the warmest period of the
year.

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Table D.34. Leaf Area Index for the ET Cover at Mill Site

Month
Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec
0 0 0.3 0.7 0.6 0.6 1.8 2.4 2.6 0.8 0.1 0

D.4.8 Project Root Biomass for Infiltration Modeling
We have chosen to use root biomass data from a seeded site in Cheyenne, Wyoming that was seeded in the 1950s with root biomass data collected about 35 years after seeding (Redente et
al. 1989). Data were collected as g/m2 and will not be converted (Table D.35). Infiltration model
uses a normalized root density function, so root measurement units are irrelevant. The climatic conditions between Blanding, Utah and Cheyenne, Wyoming are similar with Blanding receiving
34 cm of precipitation and Cheyenne receiving 36 cm. Potential evapotranspiration (PET) at Blanding is 122 cm and 115 cm in Cheyenne. Finally, the precipitation to PET ratio is 0.28 for Blanding and 0.31 for Cheyenne. Table D.35 presents both anticipated root biomass and reduced
biomass that is calculated based on a 75 percent reduction in biomass that has been reported in long-term drought studies (Weaver and Albertson 1936).
Table D.35. Projected root biomass data for anticipated and reduced performance for use in infiltration modelling
Depth (cm) Root Biomass (g/m2)
Anticipated Performance
Root Biomass (g/m2)
Reduced Performance†
0-5 160 64
5-10 140 49
10-20 76 23
20-60 125 32
60-100‡ 52 2
†Based on an increasing percent reduction from 60% to 80% with depth, as extended drought or reduced
precipitation with potential climate change would result in less deep infiltration and therefore greater negative effect on deeper roots compared to shallower roots. ‡Maximum rooting depth under the reduced
performance scenario would be 68 cm.
D.5 BIOINTRUSION
D.5.1 Plant Intrusion
Table D.36 presents percent of root mass by depth for grass and shrub species that exist or may
occur on the Mill site during the performance period. It is extremely important to recognize that the rooting depths for the shrubs do not reflect the rooting depths that are expected in the cover
system but represent rooting depths reported in the literature with an effort to identify the maximum rooting depths reported. Detailed rooting depth studies are rare and the majority of studies do not report root mass by depth. The shrub values reported in Table D.36 represent
extrapolations from the literature using the maximum rooting depths reported and following the general findings in the literature that the majority of root growth typically is in the upper 30 cm for
grasses and the upper 60 cm for shrubs growing in semiarid regions. The final note of importance
that relates to the cover system is that root growth is strongly influenced by the soil which the root is growing and therefore root data from the literature must be carefully scrutinized as it is applied to specific site conditions (Munshower 1995). The shrub root data shown in Table D.36 should
therefore not be interpreted to represent the expected rooting depths in the cover system since
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rooting depth will be controlled by the highly compacted radon attenuation layer within the cover system.
Soil texture appears to be the most important soil property determining the growth-limiting bulk density of a soil because of the effect of texture on soil pore size and mechanical resistance. A soil with a large amount of fine particles (silt and clay) will have smaller pore diameters and a
higher penetration resistance at a lower bulk density than a soil with a large amount of coarse particles (sand size). Zisa et al. (1980) reported a silt loam soil had 19 percent macropore space and a measured penetration resistance of 2.5 bars at a bulk density of 1.4 g/cm3. A coarser sandy
loam soil had 28.9 percent macropore space and a penetration resistance of 1.2 bars at the same bulk density.
Roots grow in soil through large soil pores and by moving soil particles aside when the roots
penetrate pores that are smaller than the root tips. When a soil is compacted to a growth-limiting level, most soil pore diameters are substantially smaller than the diameters of growing roots. In
this situation, root growth is essentially halted because the roots cannot exert enough pressure
to overcome the mechanical resistance and move soil particles. Other pertinent studies that relate root growth and bulk density include articles by Siegel Issem et al. 2005, Mimore and Woollard
1969, and Heilman 1981.
Most, if not all, of the root growth studies cited above that relate root growth to soil compaction and soil bulk density are field studies in native soils that have been in place for centuries or longer.
These soils have therefore gone through countless wetting and drying cycles and freeze-thaw cycles and still maintain certain bulk densities that impede root growth.
Table D.36. Percent of root mass by depth for grasses and shrub species that exist or may occur at the Mill site during the performance period of 200 years.
Species 0-30 cm 30-60 cm 60-90 cm 90-120 cm 120-150 cm
Western wheatgrassa 65 14 12 9 0
Blue gramaa 94 4 1 1 0

Species 0-20
cm
20-40
cm
40-60
cm
60-80
cm
80-
100 cm
100-
200 cm
200-
300 cm
300-
400 cm
400-
500 cm
500-
600 cm
Big
sagebrusha 35 19 17 10 7 8 4 --f -- --
Fourwing
saltbushb 18 22 15 14 10 8 6 4 2 1
Shadscalec 15 20 18 14 12 8 6 4 2 1
Blackbrushd 35 50 15 -- -- -- -- -- -- --
Mormon teae 20 35 17 13 10 4 1 -- -- --
aTabler 1964; bGibbens and Lenz 2001; cKearney et al 1960; dWest 1983; Manning et al. 1990;
e Gibbens and Lenz 2001;fbeyond maximum rooting depth reported in the literature
It is important to note that shrub rooting depths reported in the literature do not reflect expected rooting depths in the cover system because of the presence of a highly compacted radon attenuation layer.
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D.5.2 Animal Intrusion
The Dames and Moore Environmental Report (1978) included animal surveys for sites
surrounding the Mill site. The Environmental Report recorded the presence or possible presence of a number of burrowing species in the Big Sagebrush community, including burrowing owl (Bubo virginianus), pocket mouse (Perognathus sp.), kangaroo mouse (Microdipodops sp.), vole
(Microtus sp.), desert cottontail (Sylvilagus audubonii), coyote (Canis latrans), red fox (Vulpes
vulpes), striped skunk (Mephitis mephitis), badger (Taxidea taxus), longtail weasel (Mustela frenata), and Gunnison prairie dog (Cynomys gunnisoni). Additional burrowing animals reported
to occur in the Juniper community included pinyon mouse (Peromyscus truei) and deer mouse (Peromyscus maniculatus). The northern pocket gopher (Thomomys talpoides) was not observed
in either community type and no mention of the species is made in the 1978 report.
D.5.3 2012 Burrowing Animal Survey
In June 2012 the area surrounding the Mill site was surveyed for burrowing animals in response
to Interrogatory 11/1. A total of 100 km of transects were walked in Big Sagebrush and Juniper
communities surrounding the Mill Site to determine either the presence of burrowing animals or future colonization based on existing habitat characteristics (see Figure D.2).
Transects were arranged in a systematic manner (at each location in Figure D.2) with a 50 m
spacing between transects and transect lengths running between 100 and 400 m, depending upon physiographic features on the landscape. The primary focus of the survey was on three
species that would potentially represent the deepest potential for burrows on the tailings cells during the performance period. These species included the badger, Gunnison prairie dog, and northern pocket gopher. Observations were made along each transect for animal sightings,
animal presence in the form of tracks, scat or active burrows, burrow densities, and habitat characteristics.
During the animal survey one badger sighting was made and multiple active prairie dog colonies
were observed to the north of the mill complex. There appears to be suitable habitat for the northern pocket gopher in the sagebrush communities surrounding the Mill site, but there is no
indication that a population of northern pocket gophers occurs in the vicinity of the Mill site. There
were no evidence of pocket gophers during surveys associated with the Environmental Report (Dames and Moore, 1978) and no evidence of pocket gophers 34 years later.
An attempt was made to estimate burrow densities for badgers but it was not always possible to
confirm a badger burrow. No badger feeding areas (i.e. dug-out prey burrows) were observed along transects that were traversed. The reported burrow density for badgers may or may not be
low, depending upon how active badgers are in the area. One of the seminal studies on badger
ecology was conducted by Messick and Hornocker (1981) in southwestern Idaho. The authors reported badger densities of 159/50 km2. This converts to approximately three per 100 hectares.
Our survey reported the highest burrow densities at one per 80 to 100 hectares. If each burrow
represented more than one individual badger, the densities potentially would be greater. Regardless, the reported burrow densities from the 2012 survey are believed to be a realistic
estimate of badger presence at the Mill site.
Within the prairie dog colonies that were located in the area of the Mill site, the greatest burrow
density was estimated at 148 burrows per hectare. Over the entire Mill site the prairie dog burrow density ranges from 0 to 148 burrows per hectare. Lupis et al. (2007) reported densities of active burrows in southeastern Utah in the range of 41 to 131/hectare or an average of 75 active burrows
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per hectare. The burrow densities reported from out 2012 survey are well within the range of a much larger study conducted by Lupis et al. (2007).
Lupis et al. (2007) provide a list of species in grasslands and shrublands in Utah considered primary and secondary habitat for the Gunnison’s prairie dog as follows:
“Perennial and annual Grasslands; or herbaceous dry meadows, including mostly forbs and grasses occurring at 640-2,740 m (2,200-9,000 ft) elevation. Principal perennial grass
species include: bluebunch wheatgrass, sandburg bluegrass (Poa secunda), crested wheatgrass (Agropyron cristatum), basin wildrye (Elymus cinereus), galleta (Pleuraphis
jamesii), needlegrass (Achnatherum hymenoides), sand dropseed (Sporobolus
cryptandrus), blue grama (Bouteloua gracilis), Thurbers needlegrass (Achnatherum thurberianum), western wheatgrass (Pascopyum smithii), squirreltail (Sitanion hystrix),
timothy (Phleum spp.), poa (Poa spp.), spike (Trisetum spicatum), Indian ricegrass
(Oryzopsis hymenoides), and some sedges (Cyperaceae spp.). Principle annual grass species is cheatgrass (Bromus tectorum). Principal forb species include: yarrow (Achillea
millefolium), dandelion (Taraxacum officinale), Richardson's geranium (Geranium
richardsonii), penstemon (Penstemon spp.), mulesears (Wyethia amplexicaulis), golden aster (Chrysopsis villosa), arrowleaf balsamroot (Balsamorhiza sagittata), hawkbit
(Agoseris pumila), larkspur (Delphinium spp.), and scarlet gilia (Gilia pulchella). Primary associated shrub species include: sagebrush (Artemesia spp.), shadscale (Atriplex confertifolia), greasewood (Sarcobatus spp.), creosote (Larrea tridentate), rabbit brush
(Crysothamnus spp.), cinquefoil (Potentilla simplex), snowberry (Symphoricarpos albus), and elderberry (Sambucus spp.). Primary associated tree species is juniper (Juniperus spp.).”
“Shrublands at 670-3,150 m (2,200-10,300 ft) elevation principally dominated by
greasewood (Sarcobatus vermiculatus), shadscale, graymolly (Kochia vestita), mat-
atriplex (Atriplex corrugata), Castle Valley clover (Atriplex cuneata), winterfat, budsage (Artemisia spinescens), four-wing saltbush (Atriplex canescens), halogeton (Halogeton
glomeratus), Mormon tea (Ephedra spp.), horsebrush (Tetradymia canescens),
snakeweed and rabbitbrush; or low elevation perennial grassland co-dominate with shrubland. Principal grassland species include: galleta, Indian ricegrass, three-awn grass
(Aristida glauca) and sand dropseed. Primary associated forb species include: desert trumpet (Eriogonum inflatum). Primary associated shrub species include: sagebrush, and black brush (Coleogyne ramosissima); other associated species include seepweed
(Suaeda torreyana).” Based on the report by Lupis et al. (2007) we agree that the habitat that will be created at the Mill
site following revegetation will include species consistent with prairie dog occupation.
Table D.37 presents an updated assessment of maximum burrow depths for animal species that
may occur on the Mill site. Based on a review of literature for burrow depths, the species that have the potential for the deepest burrows are badger (228 cm), northern pocket gopher (150
cm), and Gunnison prairie dog (427 cm). As discussed above, both the badger and Gunnison
prairie dog were observed during the 2012 animal survey, while there is no evidence that the northern pocket gopher occurs in the vicinity of the Mill site from both the 1978 and 2012 surveys.

The proposed cover system is a monolithic evapotranspiration (ET) cover that consists of the following layers from top to bottom: 15 cm of a topsoil-gravel erosion protection layer over 107
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cm of a water storage, biointrusion and radon attenuation layer over 75 cm of a highly compacted radon attenuation layer over 75 cm of a grading and radon attenuation layer. The proposed cover
system does not contain a biobarrier (e.g. cobble layer) to minimize potential intrusion by burrowing animals. The proposed cover system is designed to minimize burrowing animal intrusion through the use of thick layers of soil cover in combination with a highly compacted layer
placed at a depth that is below the expected burrowing depths among species that may inhabit the site. The thickness of the cover (total of 272 cm), the use of a highly compacted radon attenuation layer located at a depth between 122 and 197 cm, and a final 75 cm layer below the
compacted zone will all contribute to minimizing any biointrusion through the cover. Considering the animal species that may inhabit the tailings cells and the thickness and physical nature of the
cover, it is not anticipated that burrowing will extend below 122 cm or into the very top portion of
the highly compacted zone. Burrowing into the highly compacted radon attenuation layer that begins at a depth of 122 cm will be restricted because of the high density of this material (95
percent Standard Proctor).

Table D.37. Range of maximum burrow depths for wildlife that inhabit or may inhabit the
Mill site during the required performance period of at least 200 years
Species Maximum Depth (cm) Source
Pocket mouse

52 to 62
35-153
Kenagy 1973; Scheriber 1978
Pinyon mouse 34 Reynolds and Wakkinen 1987
Deer mouse 13-50 Reynolds and Laundre 1988; Kritzman 1974
Kangaroo rat 24-61
20-69
Reynolds and Wakkinen 1987; Anderson
and Allred 1964
Vole 15-55 Reynolds and Wakkinen 1987
Desert cottontail Abandoned burrows and
surface nest
Wilson and Reeder 2005;
Chapman and Willner 1978
Long-tailed weasel Abandoned burrows and
surface nest
Feldhammer et al. 2003
Striped Skunk 90 Jackson 1961
Badger 150 to 228 Lindsey 1976; Anderson and Johns 1977
Gunnison prairie dog 30 to 427
69 to 185 68 to 82
Verdolin et al. 2008; Sheets et al 1971;
Whitehead 1927
Red fox 100 to 130 Feldhammer et al. 2003; Saunders 1988
Coyote Most common behavior is to use burrows of other animals
like the badger
http://carnivora.com/topic/932884/1/
Burrowing owl Abandoned burrows Haug et al. 1993
Northern Pocket
Gopher
10 to 30
150
Winsor and Whicker 1980; Gettinger 1975;
Felthauser and McInroy 1983

D.6 SOIL REQUIREMENTS FOR SUSTAINABLE PLANT GROWTH
There are two key components to establishing an ET cover with a sustainable plant community. The first is to select long-lived species that are adapted to the environmental conditions of the
site. The second is to provide a cover soil that will function as an effective plant growth medium
over the long term by supplying plants with adequate amounts of water, nutrients and rooting volume.
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There are a number of soil characteristics that are particularly important to achieve long-term sustainability in semi-arid environments and include the following: pH, electrical conductivity
(EC), sodium levels, percent organic matter, texture, bulk density, cation exchange capacity, macronutrient concentrations, available water holding capacity, and soil microorganisms. Table D.38 presents levels for most of these soil properties that are considered necessary for long-term
sustained plant growth. In addition, the table includes soil property levels from soil samples of potential cover soil collected from stock piles at the Mill site in May 2009.
The soil properties of the potential cover soil that are acceptable for sustaining long-term plant
growth include: pH, EC, sodium adsorption ratio (SAR), percent clay content, and extractable phosphorus. Those soil properties that appear to be deficient and would need improvement
include: percent organic matter, total nitrogen, and extractable potassium.
Cation exchange capacity was not measured in the potential cover soil, but it is believed that the cover soil will have an acceptable level for sustained plant growth based on the percent clay
content and a recommendation that an organic matter amendment be added to the soil during the
reclamation process. Bulk density of the emplaced cover material will be specified in the cover design and will be controlled during the construction process to be within the sustainability range
shown in Table D.38.
Table D-38. Soil Properties and Their Range of Values Important for Sustainable Plant
Growth, Along with Analytical Results of Soil Available for ET Cover Construction at the
Mill Site
Soil Property Level for Sustainability Reference Levels for On-Site Soil
pH (units) 6.6 to 8.4 Munshower (1994) 7.7 to 8.1
EC (mmhos/cm) ≤4.0 Munshower (1994) <1.5
Sodium adsorption ratio ≤12 Munshower (1994) <0.5
Organic matter (%) 1.0 to 3.0 Smith et al. (1987) 0 to 0.4
Texture (%) > 50% silt and clay Brady (1974) > 50% silt and clay
Bulk density (g/cm3) 1.2 to 1.8 Brady (1974) 1.59 to 1.99†
Water holding capacity
(cm H2O/cm soil)
0.08 to 0.16 Brady (1974) 0.084-0.14†
Cation exchange capacity (meq/100g) 5 to 30 Munshower (1994) Not measured
Total nitrogen (%) 0.05 to 0.5 Harding (1954) 0.02 to 0.05
Extractable phosphorus
(mg/kg)
6 to 11 Ludwick and Rogers
(1976)
10 to 57
Extractable potassium (mg/kg) 60 to 120 Ludwick and Rogers (1976) 11 to 36
†Calculated values
In order for the potential cover soil to function as a normal soil and provide long-term sustainable support for the vegetation component of the ET cover, it will be amended to improve organic
matter content, nitrogen and potassium levels. An organic matter amendment will also improve available water holding capacity and cation exchange capacity. The proposed organic amendment is composted biosolids. Composted biosolids have been successfully used in mined
land reclamation over the past 40 years. This amendment would also provide a source of soil microorganisms that will function to cycle nutrients over time and ensure sustainable plant growth.
Composted biosolids would be applied at a rate of 10 tons/acre and incorporated into the upper
six inches of the water storage layer of the cover system. Composted biosolids are also a source
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of nitrogen, phosphorous and potassium and will serve to improve organic matter content and soil fertility. The following discussion provides the rationale for selecting composted biosolids as the
amendment of choice for the cover soil.
Type of Amendment, Application Rates, and Costs – There are three possible soil amendments that would be a source of organic matter and nutrients for sustained plant growth. These
amendments include composted biosolids, a combination of manure and hay, or a commercial organic fertilizer such as Biosol®. Biosol® is a highly effective organic amendment but would be cost prohibitive if the objective is to achieve 1 percent organic matter content in the soil. It would
require the addition of at least 10 tons/acre to meet this organic matter target and the cost would be approximately $12,300/acre, which includes a product cost of $12,000/acre, transportation
cost of $100/acre, and an application cost of $200/acre. Composted biosolids would be equally
effective as Biosol®, but much less expensive. Composting of biosolids is a proven method for pathogen reduction and results in a product that is easy to handle, store, and use. The end product
is usually a Class A, humus-like material without detectable levels of pathogens that can be
applied as a soil amendment. Composted biosolids provide large quantities of organic matter and nutrients (such as nitrogen and phosphorus) to the soil, improves soil texture, and elevates soil
exchange capacity. If composted biosolids were obtained from Farmington, NM (which appears
at this time to be the closest source), the cost for a 10 ton/acre application rate would be $1,530/acre, which includes $260/acre for product cost, $1,070/acre for transportation, and
$200/acre for application. The use of manure and hay would be the least effective amendment because both products have the potential of adding unwanted weed seed to the cover vegetation and manure is relatively high in nitrogen and if not properly off set with hay, there is a potential of
having excessive nitrogen introduced into the cover system that would also lead to a proliferation of unwanted weeds.
Method of Application – Composted biosolids are produced by mixing biosolids (treated sewage sludge) and wood waste material. Composted biosolids are easy to apply and would be broadcast over the soil surface using a commercial manure spreader and the amendment would then be
incorporated with a chisel plow or disc plow.
Limitations of Soil Amendments – Composted biosolids have few limitations as a soil amendment.
Composted biosolids are often low in readily available nitrogen, but have high organic nitrogen levels that can be slowly released for plant use over time. The EPA has established rules for the
land application of biosolids that address concerns about possible pathogen transmittal, nitrate
pollution, and trace metal contamination (EPA, 1993 and 1995). In order to be land applied, a particular biosolid must have undergone a pathogen reduction process, must contain less than a
specified amount of bacterial pathogens, and must meet limits for heavy metal concentration.
Considerable research has been conducted over the past 40 years on the interactions between
biosolids, soil properties, plant growth and environmental quality. Amendment of disturbed soils
with composted biosolids has been shown to increase soil organic matter, cation exchange capacity, soil nutrient levels, microbial biomass and activity, water holding capacity, and
aggregate stability, and also to reduce soil bulk density and metal availability for plant uptake. The potential for successful reclamation with composted biosolids is tremendous and most of the highly beneficial properties of composted biosolids as a soil amendment come from its high
organic matter content (Sopper, 1993). The use of composted biosolids is extremely important where topsoil is inadequate in amount or quality (Sopper, 1993; Munshower, 1994).

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The application of composted biosolids on disturbed land generally has had a very beneficial effect on the establishment and growth of grasses and forbs (Sopper, 1993; Haering et al., 2000).
It facilitates rapid establishment and vigorous growth of herbaceous plants. Sites treated with composted biosolids generally have a greater percent cover, greater aboveground production, and better developed root systems compared to non-amended sites or sites treated with just
inorganic fertilizers (Sopper, 1993; Haering et al., 2000). The use of composted biosolids also aids in the establishment and growth of shrubs. Annual height and diameter growth is improved with composted biosolids and overall woody plant survival is increased if competition from
herbaceous plants is not an issue (Sopper, 1993; Haering et al., 2000).
Field studies at the Climax Molybdenum Mine near Leadville, Colorado conducted by Carlson et
al. (2006) examined the effect of composted biosolids on tailings reclamation over a seven-year period. The findings of this study were that composted biosolids are an effective means of
establishing soil microbe and vegetation communities on tailings. The authors concluded that:
over seven years and in extreme growing conditions, biosolid amendments reduced soil toxicity [by immobilizing heavy metals], neutralized acidity, and introduced constituents [e.g. nutrients and
soil microbes] necessary to sustain vegetation communities on tailings capped with overburden
material.
In a very long-term study conducted by Paschke et al. (2005) the effect of biosolids amendments were assessed on disturbances in a sagebrush community in northwestern Colorado. The authors reported that 24 years after biosolids were applied on fertile and infertile soil material that:
“… biosolids amendments have long-lasting effects on soil fertility and plant community composition…”
The greatest limitation for the use of composted biosolids at the Mill site will be availability of the product. Availability varies over time depending upon supply and demand. Since the Mill site is
in a remote location, sources of composted biosolids in the quantities needed for tailing cell
reclamation are limited and advanced planning will be required to secure the quantities needed when the cover system is being constructed.
D.7 WEED MANAGEMENT
Weed management would be conducted on the Mill site by identifying the presence of any noxious
weeds during annual vegetation surveys and developing a weed control plan that is specific to the species that are present (Table D.39). Noxious weed control is species dependent and both method and timing will vary from species to species.
Each survey will identify noxious weed populations and locate these populations on a map using a set of symbols to identify species, size of the infestation, and density of the population. The
effectiveness of control methods will also be documented in each annual survey. In addition,
immediately adjacent off-site properties will be visually surveyed to a distance of 100 feet. Inspections will be conducted by personnel familiar with the identification of noxious weeds in the
area and based on Utah’s Noxious Weed List.
The selected control methods will be based on the type, size, and location of the mapped noxious weeds. The treated area(s) will be monitored and re-inspected annually for new weed
introductions and to evaluate the success of the control methods. Prevention is the highest priority weed management practice on non-infested lands; therefore protecting weed-free plant communities is the most economical and efficient land management practice. Prevention is best
accomplished by ensuring that new weed species seed or vegetative reproductive plant parts of
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weeds are not introduced into new areas, and by early detection of any new weed species before they begin to spread.
Control methods may include chemical or mechanical approaches. The optimum method or methods for weed management will vary depending on a number of site-specific variables such as associated vegetation, weed type, stage of growth, and severity of the weed infestation.

Table D.39. Noxious Weed Species

Scientific Name Common Name
Utah State—Listed Noxious Weeds
Acroptilon repens Russian knapweed
Cardaria spp. Whitetop (all species)
Carduus nutans Musk thistle
Centaurea diffusa Diffuse knapweed
Centaurea solstitialis Yellow star thistle
Centaurea stoebe ssp. micranthos Spotted knapweed
Centaurea virgate ssp. Squarrosa Squarrose knapweed
Cirsium arvense Canada thistle
Convolvulus spp. Bindweed (all species)
Cynodon dactylon Bermuda grass
Elymus repens Quackgrass
Euphorbia esula Leafy spurge
Isatis tinctoria Dyer’s woad
Lepidium latifolium Broadleaf pepperweed
Lythrum salicaria Purple loosestrife
Onopordum acanthium Scotch thistle
Sorghum almum Perennial sorghum (all species)
Taeniatherum caput-medusae Medusahead
San Juan County—Listed Noxious Weeds
Aegilops cylindrical Jointed goatgrass
Alhagi maurorum Camelthorn
Asclepias subverticillata Western whorled milkweed
Solanum elaeegnifolium Silverleaf nightshade
Solanum rostratum Buffalobur

Chemical Control Chemical control consists mostly of selective and non-selective herbicides. Considerations for chemical controls include: herbicide selection, timing of application, target weed, desirable plant
species being grown or that will be planted, number of applications per year and number of years a particular species will need to be treated for desired control. Also important are the health and
safety factors involved, and the need to consider undesirable impacts. The use of herbicides will
be in compliance with all Federal and State laws on proper use, storage, and disposal. The chemical application will be done by a licensed contractor in accordance with all applicable laws
and regulations and all label instructions will be strictly followed. Applications of herbicides would
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not be permitted when the instructions on the herbicide label indicate conditions that are not optimal.

Mechanical Control
Mechanical control is the physical removal of weeds from the soil and includes tilling, mowing,
and pulling undesirable plant species. Tillage is most effective prior to seeding and establishment of desirable vegetation. The tillage method of weed control can be effective in eliminating noxious
perennial weeds when repeated at short intervals (every 1-2 weeks) throughout the growing
season. Tillage has the drawback of indiscriminately impacting all vegetation interspersed with weeds in established areas and can eliminate competitive, desirable vegetation leaving behind a
prime seedbed for weeds to reinvade. Mowing can be an effective method for controlling the
spread of an infestation and preventing the formation and dispersal of seeds. Mowing is most effective on weeds which spread solely or primarily by seed. In order to achieve this, it must be
repeated at least twice during the growing season prior to, or shortly after bloom. Also, even the
most intense mowing treatment will not kill hardy perennial weeds. Additional considerations will be made when selecting control treatments when specific situations arise regarding type, size,
and location of weed infestations. Examples of this are perennial versus biennial, broadleaf versus grasses, noxious weeds interspersed with desirable vegetation, large monoculture patches, or small patches requiring spot treatment.

Treatment windows schedules, based on the control methods chosen and the noxious weeds present, will be established for each treatment area. The best time to treat perennial noxious weeds is in the spring or fall during their active growth phase. Different species will have different
optimum treatment times even with the same type of control. Perennial weeds usually grow vegetatively in the spring, flower and seed in late spring and early summer, enter dormancy during the summer and actively grow again in the fall. The treatment windows selected will depend on
the species present and control methods selected.
The final preparatory step is to determine the priority for areas to be treated. Prioritization ensures
that the most important areas are dealt with at the most effective times. Important areas of concern include areas that may transport weed seeds. These areas include ditches, roadsides, and land
equipment storage sites. Large monoculture patches are of concern wherever they occur and
would always be high priority. Also, small patches of weeds would be treated to prevent expansion of weed populations.

Once the treatment plan is implemented, detailed records will be kept, and success or failure of treatment will be recorded so as to eliminate unsuccessful treatments.

D.8 REVEGETATION ACCEPTANCE GOALS/CRITERIA AND MONITORING

The following Revegetation Acceptance Goals/Criteria have been adapted from the Monticello
Site and would be used at the Mill site to determine reclamation success.

Criterion 1 Species Composition
a. The vegetative cover (the percentage of ground surface covered by live plants) shall be
composed of a minimum of five perennial grass species (at least four listed as native),
one perennial forb and two shrub species listed in Table D.1.

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Criterion 2 Vegetative Cover
a. Attain a minimum vegetative cover percentages of 40 percent.

b. Individual grass and forb species listed in Table D.1 that are used to achieve the cover
criteria shall have a minimum relative cover (the cover of a plant species expressed as a
percentage of total vegetative cover) of 4 percent and a maximum relative cover of 40
percent.

c. Individual species not listed in Table D.1 may be accepted as part of the cover criteria if
it is demonstrated that the species is native or adapted to the area and is a desirable
component of the reclaimed project site.

d. Species not listed in Table D.1, including annual weeds or other undesirable species
shall not count toward the minimum vegetative cover requirement. Every attempt should
be made to minimize establishment of all non-noxious weeds.

e. Reclaimed areas shall be free of state- and county-listed noxious weeds (Table D.40).

f. The vegetative cover shall be self-regenerating and permanent. Self-regeneration shall
be demonstrated by evidence of reproduction, such as tillers and seed production.

Criterion 3 Shrub Density
a. A minimum shrub density of 500 stems per acre

b. Shrubs shall be healthy and have survived at least two complete growing seasons
before being evaluated against success criteria
Monitoring

Plant cover would be measured annually on the tailing cells for a minimum of ten years or until the revegetation goals stated above are achieved. Cover would be measured by the point
method, using a vegetation sighting scope mounted on an adjustable tripod with a level (or similar
instrument). Cover would be measured for each species encountered, as well as litter, rock, and bareground. Cover measurements would be made along a minimum of ten randomly placed
transects on each tailing cell that are 100 feet long. A total of 100 points would be sited at one-
foot intervals along each transect to collect cover data in the categories of live vegetation, litter, rock, and bareground. Sample adequacy would be determined for each tailing cell using the
following formula that identifies the minimum number of samples that are necessary to estimate the population mean at a 90 percent level of confidence. Total live vegetation cover would be used to calculate sample adequacy.

n = t2s2
(.10x)2

Where: n = minimum number of samples required to meet sample
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adequacy requirements
s2 = variance
t2 = 1.64 for 90% confidence
x = sample mean

Shrub density would be measured in belt transects placed on either side of the cover transects.
All shrubs would be counted within a three-foot wide strip or belt transect along each side of the
transect used for point cover measurements, resulting in a belt transect that is six-feet wide and 100 feet long.
In addition to the above cover sampling, annual observations would be made of overall plant community health and sustainability. Overall health would be based on plant vigor, presence of annual weeds, and signs of plant deficiencies or toxicities. Plant community sustainability would
be based on observations of reproduction, including both vegetative reproduction, such as tillering, and seed production.
If revegetated areas are not making satisfactory progress in meeting revegetation goals outlined
above, then remedial actions will be implemented as needed. These actions may include fertilization/soil amendments, reseeding, weed control, and/or erosion control depending upon the cause of the problem that may exist and the best remediation approach to ensure plant community
success. Potential revegetation problems that are most likely to occur based on typical revegetation projects in the semiarid west and on experiences at the Monticello Site fall into two
categories. The first is poor initial plant establishment following revegetation practices and the
second is poor plant growth during post-revegetation management. Poor initial plant establishment can be caused by a number of factors including unfavorable soil conditions related
to texture or soil chemistry, improper seedbed preparation, improper seeding techniques,
improper species selection, poor seed quality, planting in the wrong season, seed predation, and inadequate precipitation. If revegetation at the Mill site results in unacceptable initial plant
establishment, the cause of this response will be investigated, the identified cause will be corrected, and the necessary revegetation practices will be applied until successful plant establishment has occurred. The most likely cause of poor initial plant establishment at the Mill
site would be low precipitation and additional seedings would be required in a subsequent year(s) until precipitation improves and an adequate stand of vegetation is achieved. Additional mulching to control erosion and improve soil moisture conditions for seed germination and initial seedling
growth would be part of the remedial process. Poor plant growth during post-revegetation management has been an issue at the Monticello Site as it relates to shrub establishment. The primary species that has been an issue is big sagebrush and the cause of the problem has been
seedling damage associated with vole herbivory.
D.9 SUSTAINABILITY OF THE COVER DESIGN
D.9.1 CLIMATE CHANGE
Climate, more than any other factor, controls the broadscale distributions of plant species and
vegetation. At finer scales, other factors such as local environmental conditions including soil
nutrient status, pH, water-holding capacity and the physical elements of aspect or slope influence the potential presence or absence of a species. However, intra- and inter-specific interactions,
such as competition for resources (light, water, nutrients), ultimately determine whether an individual plant is actually found at any particular location (Sykes 2009). Rapid climate change
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associated with increasing greenhouse gas emissions (IPCC 2007) influences current and future vegetation patterns. Other human-influenced factors are, however, also involved. Sala et al.
(1997) identified five different drivers of change that can be expected to affect global biodiversity over the next 100 years. Globally, land use change was considered the most important driver of change, followed by climate change, airborne nitrogen deposition, biotic interactions (invasive
species) and direct CO2 fertilizing or water use efficiency effects.
Predicted changes in climate that may occur in the southwestern U.S. include increased atmospheric concentrations of CO2, increased surface temperatures, changes in the amount,
seasonality, and distribution of precipitation, more frequent climatic extremes, and a greater variability in climate patterns. Recent temperature increases have made the current drought in
the region more severe than the natural droughts of the last several centuries. This drought has
caused substantial die-off of pinyon pine trees in approximately 4,600 square miles of pinyon-juniper woodland in the Four Corners region (Breshears et al. 2005). Williams et al. (2010)
examined correlations between climate and the radial growth of trees across North America. They
show that conifer trees in the southwest are particularly sensitive to temperature and aridity relative to other regions. They used climate-tree growth relations calculated for the past 100
years, combined with Intergovernmental Panel on Climate Change (IPCC) climate model
estimates for the 21st century to predict the likely fate of important southwest tree species such as pinyon pine. They concluded that woodlands and forests will experience substantially reduced
growth rates and increase mortality at many southwest sites as the century progresses.
The specific physiological effects of increasing GHG emissions (particularly CO2) on vegetation include increased net photosynthesis, reduced photorespiration, changes in dark respiration, and
reduced stomatal conductance which decreases transpiration and increases water use efficiency
(Patterson and Flint 1990). Ambient temperature affects plants directly and indirectly at each stage of their life cycle (Morison and Lawlor 1999). Water (i.e. soil moisture) is usually the abiotic
factor most limiting to vegetation, especially in arid and semi-arid regions. Carbon dioxide, temperature, and soil moisture effects on plant physiology are exhibited at the whole-plant level in terms of growth and resource acquisition. In addition to the individual effects of increasing
temperatures, CO2 is the additional interactive effect on photosynthetic productivity and ecosystem-level process (Long and Hutchin 1991).
Plants are finely tuned to the seasonality of their environment, and shifts in the timing of plant
activity (i.e. phenology) provide some of the most compelling evidence that species and ecosystems are being influenced by global environmental change (Cleland et al. 2007). Changes
in the phenology of plants have been noted in recent decades in regions around the world (Bradley
et al. 1999; Fitter and Fitter 2002; Walther et al. 2002; Parmesan and Yohe 2003). Phenology of plant species is important both at the individual and population levels. Specific timing is crucial to
optimal seed set for individuals and populations; and variation among species in their phenology is an important mechanism for maintaining species coexistence in diverse plant communities by reducing competition for pollinators and other resources. Global climate change could
significantly alter plant phenology because temperature influences the timing of development,
both alone and through interactions with other cues, such as photoperiod.
Shifts in the relative competitive ability of plants that experience changes in CO2, surface
temperatures, or soil moisture may result in changes to their spatial distribution (Long and Hutchin 1991; Neilson and Marks 1994). Increases in temperature may enhance the competitive ability of C4 plants (such as grasses) relative to C3 plants (shrubs and trees) (Owensby et al. 1999),
especially where soil moisture (Neilson 1993) or temperature (Esser 1992) is limiting.
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There are numerous uncertainties and complexities associated with the use of all regional climate models with regard to their ability to reliably forecast longer-term future climate conditions in the
North American South West (NASW) and at the Mill site. Therefore, attempts to extend the results from climate model predictions forecasting climate conditions through the end of the 21st century to timeframes of 200 to 1,000 years will likely result in further compounding of these uncertainties
and result in unreliable predictions. We identified this concern in earlier discussions presented on the topic of climate change.
We have reviewed references cited in the Division’s Rd 1 Interrogatories for White Mesa Revised
ICTM Report on estimating the range of future climates (CNRWA 2005; NRC 2003; NRC 1997). The Center for Nuclear Waste Regulatory Analyses (CNRWA 2005) conducted an analysis of
factors contributing to uncertainty in estimating future climates at Yucca Mountain. Their report
concludes the following:
“In summary, research performed within the last five years suggests that the timing of
climate changes over the next 100,000 years may be difficult to infer from the patterns of climate change over the last 500,000 years due to the unusually low eccentricity of Earth’s
orbit and, possibly, the influence of anthropogenic greenhouses gases. After 100,000
years, the Earth’s orbital climate forcing will be stronger, and the influence of greenhouse gases may have diminished so that the Pleistocene climate history may offer a better
analog in terms of timing of climate changes. In terms of the characteristics of future climates (i.e., mean annual precipitation and temperature, seasonal weather patterns, and storm intensities), the characteristics inferred from paleoclimate reconstructions and
present day analog records may represent the range of climate conditions that will occur in the future, even if the timing of these climates cannot be reliably estimated. The greatest uncertainty in future climate conditions relates to anthropogenic effects that may result in
climates in southern Nevada that do not have analogs with present or Pleistocene climates, such as prolonged El Niño conditions. The nature, likelihood, and duration of
such nonrepresentative climate conditions cannot be reliably assessed based on current
research. Over longer time periods, the range of conditions inferred from the Pleistocene paleoclimate record reasonably bounds future climate during the period of geologic
stability.”
We agree with NRC’s preferred approach of using paleoclimate data to estimate the likely range
of future conditions. In fact, in our previous discussion of climate change in Attachment G (EFRI,
2012), we discussed the paleoclimate approach presented by Waugh and Petersen (1994) for the Monticello site.
Waugh and Petersen (1994) summarize future climate change as follows:
“Global mean temperature may increase by 1.8 to 5.2oC in the next century, in response
to an industrial age buildup of carbon dioxide (CO2), methane, and other gases (Houghton et al. 1992). Model projections of the magnitude of warming vary, depending on whether
factors such as CO2 fertilization, feedback from stratospheric ozone depletion, and the radiative effects of sulfate aerosols are taken into account. Model projections of precipitation responses to greenhouse warming also are inconsistent (Houghton et al.
1990; Crowley and North 1991; Washington and Meehl 1984; Wilson and Mitchell 1987; Schlesinger and Mitchell 1987). Some regions may be effectively wetter and others drier,
depending on the balance of the greater potential evaporation and the greater water-
holding capacity of a warmer atmosphere. Greenhouse warming may eventually be overwhelmed as the earth plunges into another ice age. Models of cyclic astronomical
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forcing of climate agree that, without anthropogenic disturbances, a long-term cooling trend that started about 6,000 years ago will continue, climaxing with a major glaciation in
about 60,000 years (Imbrie and Imbrie 1980; Berger et al. 1991). In contrast, aperiodicity in the timing of past ice ages is evident in oxygen isotope records (Winograd et al. 1992). Other paleorecords suggest that certain feedback mechanisms have caused rapid and
unpredictable transitions into ice ages (Berger and Labeyrie 1987; Phillips et al. 1990).”

Waugh and Petersen (1994) concluded from their investigation that despite uncertainty about
drivers of future climate change, climate extremes in the next 1,000 years likely will not exceed those associated with the last glacial and interglacial periods. Therefore, paleo-records of full
glacial and Altithermal climates in the Four Corners region provide reasonable ranges of possible
future climate and should be incorporated in assessments of the long-term performance of tailings disposal facilities. For Monticello, Utah, full glacial and Altithermal climate reconstructions provide
working levels of 2 to 10o C mean annual temperature and 38 to 80 cm mean annual precipitation.
If we assume that a similar range of temperature and precipitation could also occur at the Mill site, then during the next glacial phase anticipated to occur approximately 60,000 years into the future
the climate would be a colder and wetter compared to current conditions, and if conditions post-
glaciation result in a warm period the climate would be warmer and wetter than current conditions.
Table D.41 presents a list of possible climate scenarios for the Mill site, their likelihood of
occurrence and the resulting plant community type that would develop during the required performance period. From the review of climate change literature applicable to the southwest U.S. and an analysis of the impact of various climate change scenarios, it is our conclusion that
the most likely plant community type that will be maintained throughout the 200- to 1,000-year performance period is a community dominated initially by cool season grasses, with a long-term transition to dominance by warm season grasses and shrubs as atmospheric CO2 and
temperature continues to increase and precipitation ether increases or decreases.
D.7.2 Plant Community Succession and Potential for Species Colonization
Plant succession is the ecological process of directional vegetation change over time, usually
beginning with relatively-short lived herbaceous plants and culminating in plant communities dominated by long-lived, generally woody species. Succession occurs on all sites. The rate of
succession can be relatively rapid, especially in regions of higher rainfall, or it can be very slow,
as in some desert and arctic regions, but this process of vegetation change is constantly taking place.
Two common aspects of succession are 1) an increase in vegetation structure and 2) an increase
in the relative amounts of woody plants. Both of these aspects have profound implications to the function of cover systems. Vegetation structure refers to the shape of the vegetation, e.g., height,
coverage, and stratification. Structure increases as succession proceeds, both above- and belowground. Aboveground, the height of the vegetation increases (e.g., grasses may be replaced by shrubs), coverage of the soil surface increases, and layering (strata) of vegetation
occurs, with different species occupying different vertical layers. Similar processes occur
belowground. Root systems become deeper as shallow-rooted species are replaced by deeper-rooted species, root biomass increases in lower soil depths as the number and types of species
increase, and the density of the root system increases in the various layers.
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Table D.40. Possible Climate Scenarios for the Mill Site, Likelihood of Occurrence and
Projected Change in Plant Species Composition Compared to the Initial Grass/forb
Community Established on the Soil Cover
Possible Climate Scenarios Likelihood of Occurence9 Projected Plant Community Type in 1,000 Years with Seeded Grass/Forb as the Initial Community
Warmer and Dryer than Present1
Highly Likely Grass/forb community with an increase in warm season species.
Warmer and Wetter
than Present2
Highly Likely Will depend on distribution of additional precipitation. If
more precipitation in winter months, then the plant community would experience an increase in woody
plants; if more precipitation in the summer months, then the plant community would continue as a grass/forb
type.
Warmer than Present
with Similar Total Precipitation3
Unlikely Grass/forb community with an increase in warm season
species.

Cooler and Wetter
than Present4
Highly Unlikely Shift to more woody plants because of more snow in
winter months.
Cooler and Dryer than Present5
Highly Unlikely Shift to more woody plants because of more snow in winter months.
Cooler than Present with Similar
Precipitation6
Highly Unlikely Shift to more woody plants because of more snow in winter months.

Dryer than Present with Similar
Temperature7
Unlikely Grass/forb community with an increase in warm season species because of less overall moisture and increase
in atmospheric CO2.
Wetter than Present with Similar
Temperature8
Unlikely Shift to more woody plants because of more winter precipitation.
1Results in less total precipitation but shift to less snow and more rain in winter months.
2Results in more total precipitation with shift to less snow and more rain in winter months or more rain in
summer months.
3Results in no change in total precipitation but shift to less snow and more rain in winter months.
4Results in more total precipitation with shift to more snow in winter months.
5Results in less total precipitation but shift to more snow in winter months
6Results in no change in total precipitation but shift to more snow in winter months.
7Results in less total precipitation.
8Results in more total precipitation.
9Likelihood of occurrence based on majority of climate model estimates analyzed by Cayan et al. 2010 and
Seager and Vecchi 2010, with a focus on the southwest U.S.
As the vegetation shifts from dominance by herbaceous plants (e.g., grasses), which have
relatively shallow root systems but with very dense root mass in the upper profile, to dominance by woody species (e.g., shrubs), which have deeper roots systems with proportionately more roots in deeper layers, the hydrological dynamics of the system change. Early successional plant
communities tend to extract most of the water they transpire from the upper soil profile. Late successional communities have greater ability to extract water from depth. This can be both a
positive and a negative in the functional efficiency of covers. Because of successional changes
in the vegetation, the plant-soil-water characteristics of a cover are likely to become very different over time. Conditions 200 years or more after construction are not likely to be similar to those soon after construction was completed. In some ways, conditions will be more favorable, e.g.,
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evapotranspiration will likely be higher thus reducing the amount of deep infiltration and stability of the vegetation may be greater. In other ways, conditions will be less favorable, e.g., deeper
root systems increase the concern for biointrusion. Because succession is a process that is near-universal ecologically, these changes have been accounted for in the cover design.
As stated earlier, the proposed cover system is a monolithic ET cover that consists of the following
layers from top to bottom: 15 cm of a topsoil-gravel erosion protection layer over 107 cm of a water storage, biointrusion and radon attenuation layer over up to 110 to 136 cm of a highly compacted radon attenuation layer over 76 cm of a grading and radon attenuation layer. The
proposed cover system does not contain a biobarrier (e.g. cobble layer) to minimize potential intrusion by plant roots during the required performance period. The proposed cover system is
designed to minimize plant root intrusion through the use of thick layers of soil cover in
combination with a highly compacted layer placed deep within the cover. The climax community for the Mill site is believed to be Big Sagebrush based on the current community type at the site
and the relatively deep fine loamy soils that are present. If climate trends towards a warmer and
dryer climate for the White Mesa area over the next 200 to 1,000 years, it is unlikely that sagebrush will remain on site and a community dominated by warm season species and more
arid shrub species (e.g. shadscale saltbush, blackbrush and Mormon tea) may occur.
As discussed above, the process of succession and the effect of climate change will bring about changes in species composition in the tailings cover system. Our best forecast for the percentage
of potential species colonization would be for a small percent of non-seeded species establishing during the first 50 years. The seeded community will be highly sustainable and big sagebrush would be the primary invader into the cover system. It is estimated that the established community
will consist of 60 to 70 percent seeded species and 30 to 40 percent non-seeded species at end of the first 100 years. These non-seeded species will include big sagebrush and broom snakeweed, and a few grass and forb species common in the area. During the next 100 years
the plant community will begin to transition to warm season species and big sagebrush will begin to diminish. By the end of the second 100 years it is estimated that the plant community will consist of 30 to 40 percent seeded and 60 to 70 percent non-seeded species and many of the
non-seeded species will be warm season grasses and more arid shrub species. This trend will most likely continue through the remainder of the performance period with only 10 to 20 percent
of the original seeded species still present and these would include blue grama and galleta. The
remainder of the community would consist of more warm season grasses and shrubs that will have migrated north and higher in elevation with the warming climate.
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45:633-636.
Thornburg, A.A. 1982. Plant Materials for Use on Surface-Mined Lands in Arid and Semiarid
Regions. USDA. Soil Conservation Service. SCS-TP-157. EPA-600/7-79-134. U.S.
Government Printing Office. Washington, D.C.
USDA. 2012. http://plants.USDA.gov. Accessed on July 24, 2012.
U.S. Environmental Protection Agency. 1993. Standards for the use or disposal of sewage
sludge. Fed. Reg. 58(32):9248-9415.
U.S. Environmental Protection Agency. 1995. Part 503 Implementation Guidance. EPA 833-
R-95-001. EPA, Washington, D.C.
U.S. NRC 1997. “Issue Resolution Status Report on Methods to Evaluate Climate Change and Associated Effects at Yucca Mountain.” Washington, DC: NRC. 1997.
U.S. NRC. 2003. NUREG–1804. “Yucca Mountain Review Plan.” Final Report. Rev. 2. Washington, DC: NRC. 2003.
Utah Department of Environmental Quality, Division of Radiation Control (DRC), 2012. Dension
Mines (USA) Corp’s White Mesa Reclamation Plan, Rev. 5.0; Interrogatories – Round 1. March.
Verdolin, J., K. Lewis and C. Slobodchidoff. 2008. Morphology of burrow systems: A comparison of
Gunnison’s (Cynomy gunnisoni), White-tailed (C. leucurus), black-tailed (C. ludovicianus), and Utah (C. parvidens) Prairie Dogs. The Southwestern Naturalist 53:201-207.
Walther G., E. Post, P. Convey, A, Menzel, C. Parmesan, T. Beebee, J. Fromentin, O. Hoegh-
Guldberg, and F. Bairlein. 2002. Ecological responses to recent climate change. Nature 416:389–395.
Washington, W. M. and G. A. Meehl. 1984. Seasonal cycle experiment on the climate sensitivity due
to a doubling of CO2 with an atmospheric general circulation model coupled to a simple mixed-layer ocean model. Journal of Geophysical Research 89:9475-9503.
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Lands in the West. U.S. Department of Interior. Fish and Wildlife Service. FWS/OBS-82/56. U.S. Government Printing Office. Washington, D.C.
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D-44 August 2015
Waugh, W. J., M. K. Kastens, L. R. L. Sheader, C. H. Benson, W. H. Albright, and P. S. Mushovic. 2008. Monitoring the performance of an alternative landfill cover at the Monticello, Utah,
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Northeastern Forest Experiment Station, Broomall, PA.
MILL SITE
TAILINGS AND PROCESS
SOLUTIONS CELLS
1
2
3
4A4B
1
2
3
4
5 6 7
8
9
10
12
345
67
8 9
10
1 2
3
4 5
6 7
8
9
10
LOCATION OF 2012 PLANT
COVER SURVEY TRANSECTS FIGURE D.1
1009740 TRANS
WHITE MESA MILL RECLAMATION
LEGEND
AUG 2015
Energy Resources (USA) Inc.Fuels
MILL SITE
TAILINGS AND PROCESS
SOLUTIONS CELLS
1
2
3
4A4B
LOCATION OF 2012 ANIMAL
COVER SURVEY TRANSECTS FIGURE D.2
1009740 TRANS
WHITE MESA MILL RECLAMATION
LEGEND
AUG 2015
Energy Resources (USA) Inc.Fuels
Updated Tailings Cover Design Report

APPENDIX E
SLOPE STABILITY ANALYSIS
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E-1 August 2015
E.1 INTRODUCTION
This appendix presents the methods, input and results of slope stability analyses of the tailings
cells at the Energy Fuels Resources (USA) Inc. (EFRI) White Mesa Uranium Mill (Mill). The Mill is located approximately 6.0 miles south of Blanding, Utah. These analyses were conducted
according to applicable stability criteria under static and seismic conditions, including
geotechnical stability criteria in NRC (2003). These analyses are an update to the slope stability analyses presented in MWH (2011) to incorporate revisions to the analyses to address State of
Utah, Division of Waste Management and Radiation Control (DWMRC) (formerly Utah Division
of Radiation Control, DRC) interrogatories (DRC, 2012) and review comments on EFRI responses to 2012 interrogatories (DRC, 2013). These analyses also incorporate the revised
cover grading design, results of cover material testing conducted in 2010 and 2012 (summarized in Attachment B of EFRI, 2012), and the results of tailings testing conducted in 2013 (presented in MWH, 2015b).
Slope stability analyses were performed using limit equilibrium methods with the aid of the computer program SLOPE/W (GEO-SLOPE, 2007). The SLOPE/W program calculates factors
of safety by any of the following methods: (1) Ordinary Fellenius, (2) Bishop’s Simplified, (3) Janbu’s Simplified, (4) Spencer, (5) Morgenstern-Price, (6) U.S. Army Corps of Engineers, (7) Lowe-Karafiath, and (8) Generalized Limit Equilibrium. The Morgenstern-Price method
(Morgenstern and Price, 1965) with a half-sine function for inter-slice forces was selected for performing the computations in SLOPE/W. The method uses both circular and non-circular
shear surfaces and satisfies both moment and force equilibrium.
E.2 CRITICAL CONDITIONS AND GEOMETRY
Slope stability analyses are typically conducted for scenarios that represent the critical
conditions for post-reclamation. For the White Mesa Mill tailings cells, critical conditions for post-reclamation were evaluated and included: (1) reclaimed outside surfaces of the embankment
with a 5H:1V slope, (2) existing inside surfaces of the embankments with a 2H:1V slope, and (3) conservative shear strength parameters based on previous reports.
A critical cross section, cross section A, was selected through the southern dike of Cell 4A near the southeast corner of the impoundment. The cross section location was selected based on
overall impoundment height as well as base topography and is similar to the location used for
the slope stability analyses presented in Titan (1996). The location of cross section A is shown in Figure E.1. The tailings are planned to be dewatered prior to placement of the final portion of cover. The phreatic surface was estimated to be five feet above the liner system for the
analyses.
A second cross section, cross section B, was selected through the northern embankment of the
Cell 1 Disposal Area. This location was chosen to address DRC interrogatories (DRC, 2012). The location of cross section B is shown in Figure E.2. The material placed in the Cell 1
Disposal Area will include mill debris and contaminated soils. The embankment cross section
was assumed to be fully drained and therefore a phreatic surface was not included in the analyses.

Slope stability analyses were performed by calculating factors of safety along circular and non-circular failure surfaces for both static and pseudo-static conditions. Circular failure surface
analyses were conducted by targeting both shallow and deep failure surfaces. Block failure
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Energy Fuels Resources (USA) Inc. MWH Americas, Inc.
E-2 August 2015
surfaces through the clay liner system were evaluated for cross section B. A number of failure surfaces were analyzed in order to calculate the factor of safety for the critical failure.
E.3 MATERIAL PROPERTIES
Material strength parameters used for the slope stability analysis are based on parameters
presented in Denison (2009) for the Cell 4B slope stability analyses conducted by Geosyntec, historical laboratory testing on tailings and clay materials (Advanced Terra Testing, 1996; Chen
and Associates, 1987; D’Appolonia, 1982; and Western Colorado Testing, 1999), laboratory
testing conducted in 2010 and 2012 on potential cover borrow materials (see Attachment B of EFRI, 2012), laboratory testing conducted in 2013 on tailings (MWH, 2015b) and typical
published values. The parameters for each material are discussed below and summarized in Table E.1.
Erosion Protection: The erosion protection materials include riprap and filter material on the embankment slopes, and rock mulch on the top surface of the cover system. Typical density values for sand and gravel were used for the riprap and filter materials. The riprap and filter
material strength parameters were estimated based on the lower bound typical values from Lambe (1969) for loose to medium dense sand and gravel. The rock mulch consists of topsoil material mixed with 25 percent gravel by weight. The density of the rock mulch was based on
the 2012 laboratory testing results for topsoil (see Attachment B of EFRI, 2012) and applying a rock correction based on 25 percent gravel by weight. The total unit weight of the rock mulch
was calculated using the estimated dry density and the long-term water content presented in the
radon analyses. Effective strength parameters of the rock mulch were estimated as an angle of internal friction of 33 degrees and no cohesion, based on a maximum plasticity index (PI) of the
topsoil of 10 percent (listed in the specifications), and using the generalized relationship
between PI and effective angle of internal friction presented in Holtz and Kovacs (1981).
Cover System: The cover system material properties were estimated based on the updated geotechnical site investigation in April 2012. The total unit weight values used in the model for the random fill layers were estimated using 2010 and 2012 laboratory tests conducted on
potential cover borrow materials (see Appendix A.2) and based on the compaction effort for each layer. The total unit weights for the cover layers were calculated using the long-term water
contents for the cover layers used in the radon analyses. Effective strength parameters for the
cover materials were estimated based on the maximum measured PI (30) from the 2010 and 2012 laboratory test results and using the generalized relationship between PI and effective angle of internal friction presented in Holtz and Kovacs (1981), resulting in an angle of internal
friction of 29 degrees and no cohesion.
Tailings Material: The dry density of the tailings was estimated as 96 pcf, based on laboratory
tests (Chen and Associates, 1987 and Western Colorado Testing, 1999) and assuming the upper bound long-term density of the tailings should be no greater than 90 percent of the
average laboratory measured maximum dry density for tailings. This is the same density used
for the radon analyses. The total unit weight of the tailings was calculated using the long-term water content assumed for the tailings in the radon analyses. Based on existing operations at
the site, the tailings deposits are primarily fine sands with silt and some clay. The strength parameters of the tailings were conservatively estimated using the Naval Design Manual for Soil Mechanics DM7-01 (NAVFAC, 1986) as zero percent relative density silty sand. The strength
parameters used for the tailings (no cohesion and an effective angle internal friction of 25 degrees) are consistent with the values presented in Denison (2009) for the Cell 4B design
stability analyses.
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Energy Fuels Resources (USA) Inc. MWH Americas, Inc.
E-3 August 2015
Contaminated Soils/Mill Debris: The materials to be placed in the Cell 1 Disposal Area
include contaminated soils and mill debris. The contaminated soils will be from on-site and have similar properties as the cover soils. The material properties for the contaminated soils
and mill debris were conservatively assumed to be the same as the cover soils (compacted to
85 percent standard Proctor compaction).
Clay Liner: Cell 1 will be lined with a clay liner. The dry density of the clay was estimated
based on laboratory tests performed on Section 16 clay (D’Appolonia, 1982; Advanced Terra Testing, 1996) and assuming the clay will be compacted to 95 percent of standard Proctor
compaction. The total unit weight for the clay was calculated using the estimated dry density and a long-term water content of 14 percent. The long-term water content was estimated based on 15 bar water contents measured for Section 16 clay samples by Chen and Associates (1987)
presented in Titan (1996). The strength parameters for the clay were estimated using the average measured PI (60) of samples meeting the placement specifications for minimum PI and percent passing the No. 200 sieve, and the generalized relationship between PI and effective
angle of internal friction presented in Holtz and Kovacs (1981), resulting in an angle of internal friction of 24 degrees and no cohesion. Dike and Foundation: Density and strength parameters for the existing foundation and dike material were estimated as the values presented in stability analyses performed for the design
of Cell 4B by Geosyntec (Denison, 2009). The strength parameters used in the model were
based on laboratory testing results from samples obtained from the existing berm between Cell 4A and 4B (Denison, 2009).
Bedrock: Failures are not anticipated to occur within the bedrock underlying the embankment, due to the relatively high strength of the underlying sedimentary rock. Therefore, the material
properties for the bedrock were modelled as those consistent with sedimentary rock. Table E.1. Material Parameters Used in Model

Material
Total Unit Weight
(pcf)
Effective Cohesion
(psf)
Effective Friction Angle
(deg.)
Riprap 125 0 36
Riprap Filter 125 0 30
Rock mulch 110 0 33
Cover Upper Layer (85% SP compaction) 107 0 29
Cover Middle Layer (95% SP compaction) 120 0 29
Cover Lower Layer (80% SP compaction) 100 0 29
Random Fill 100 0 29
Tailings 95 0 25
Contaminated Soils/Mill Debris 107 0 29
Clay Liner 110 0 24
Dike 137 900 26
Foundation 137 900 26
Bedrock 130 10000 45
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Energy Fuels Resources (USA) Inc. MWH Americas, Inc.
E-4 August 2015
E.4 SEISMIC ANALYSIS AND SEISMICITY
Stability analyses under seismic conditions were conducted as pseudo-static analyses, where a horizontal acceleration or seismic coefficient is applied to both cross-sections. This seismic
coefficient represents the horizontal accelerations applied on the structure by an earthquake. A
coefficient of 0.1 g was used for the analyses based on the site-specific probabilistic seismic hazard analysis (MWH, 2015a). This seismic coefficient represents the seismic loading for the
Maximum Credible Earthquake (MCE) calculated to occur during the long-term life of the
embankment. A summary of the site seismicity is provided in the MWH (2015a).
A liquefaction analysis was conducted for the tailings and is presented in Appendix F (revised version provided as Attachment G to this submittal). The results indicate the tailings are not susceptible to earthquake-induced liquefaction. For materials that do not liquefy or lose shear
strength with seismic shaking, seismic slope stability is analyzed by a pseudo-static approach. This consists of application of an equivalent horizontal acceleration or seismic coefficient to the structure being analyzed. The seismic coefficient represents an inertial force due to strong
ground motions during the design earthquake, and is represented as a fraction of the peak ground acceleration (PGA) at the site (typically at the base of the structure). The strategy of representing the seismic coefficient as a fraction of the PGA has been adopted in review of
uranium tailings facility design and documented in DOE (1989). A seismic coefficient of 2/3 of the PGA typically represents the post-reclamation conditions. MWH (2015a) estimated the
mean PGA for reclaimed conditions to be 0.15g. The seismic coefficient used for the pseudo-
static stability analysis is 0.10g (equal to 2/3 of the PGA). E.5 DISCUSSION OF STABILITY ANALYSIS RESULTS
The results of stability analyses for Cross-section A and B are presented in Table E.2. These
values represent the lowest calculated factor of safety from a number of individual failure surfaces for a Morgenstern-Price Analysis.
Table E.2. Slope Stability Analysis Results
Cross-Section
Failure
Type
Loading
Condition
Required
Factors of
Safety
Calculated
Factors of
Safety
Cross Section A -
Cell 4A Embankment
Shallow Circular
Static 1.5 3.05
Pseudo-Static 1.1 1.99
Deep Circular
Static 1.5 3.86
Pseudo-Static 1.1 2.53
Cross Section B –
Cell 1 Embankment
Shallow
Circular
Static 1.5 2.64
Pseudo-Static 1.1 1.71
Deep
Circular
Static 1.5 2.71
Pseudo-Static 1.1 1.76
Block Static 1.5 2.76
Pseudo-Static 1.1 1.80

Updated Tailings Cover Design Report

Energy Fuels Resources (USA) Inc. MWH Americas, Inc.
E-5 August 2015
As shown in Table E.2, all calculated factors of safety were significantly above the NRC recommended values of 1.5 for static conditions and 1.1 for pseudo-static conditions. The
model profile figures and SLOPE/W output figures for static and pseudo-static loading conditions are shown in Figures E.3 through E.14.
E.6 REFERENCES
Advanced Terra Testing (1996). Physical soil data, White Mesa Project, Blanding Utah, July 25.

Chen and Associates, Inc., 1987. Physical Soil Data, White Mesa Project, Blanding Utah, Report prepared for Energy Fuels Nuclear, Inc.
D’Appolonia Consulting Engineers, Inc. (1982), Letter Report, Section 16 Clay Material Test Data, White Mesa Uranium Project, Blanding, Utah, Report prepared for Energy Fuels
Nuclear, Inc. on 8 March 1982.
Denison Mines (USA) Corporation (Denison), 2009. Cell 4B Lining System Design Report,
Response to Division of Radiation Control (“DRC”) Request of Additional Information –
Round 1 interrogatory, Cell 4B Design, Exhibit A, Geosyntec Slope Stability Analysis Calculation Package. January 9.
Energy Fuels Resources (USA), Inc. (EFRI), 2012. Responses to Interrogatories – Round 1 for Reclamation Plan, Revision 5.0, March 2012. August 15.
GEO-SLOPE International Ltd, 2007. Slope/W, Version 7.17, Calgary, Alberta.
Holtz, R.D. and Kovacs, W.D., 1981. An Introduction to Geotechnical Engineering. New York: Prentice-Hall, 1981.
Lambe, T.W. and Whitman, R.V., 1969. Soil Mechanics. New York: John Wiley & Sons, 1969.
Morgenstern, N.R., and V.E. Price, 1965. The Analysis of the Stability of General Slip Surfaces.
Geotechnique, Vol. 15, pp. 79-93.
MWH Americas, Inc. (MWH), 2011. Updated Tailings Cover Design. Prepared for Denison Mines (USA) Corp. September.

MWH Americas, Inc. (MWH), 2015a. White Mesa Mill Probabilistic Seismic Hazard Analysis Report. Prepared for Energy Fuels Resources (USA) Inc. April.
MWH Americas, Inc. (MWH), 2015b. White Mesa Mill Tailings Data Analysis Report. Prepared for Energy Fuels Resources (USA) Inc. April.
Naval Facilities Engineering Command (NAVFAC), 1986. Soil Mechanics Design Manual 7.01.
Nuclear Regulatory Commission (NRC), 2003. “Standard Review Plan for the Review of a Reclamation Plan for the Mill Tailings Sites Under Title II of the Uranium Mill Tailings
Radiation Control Act.” NUREG-1620. Division of Waste Management, June.
Titan Environmental Corporation (Titan), 1996. Tailings Cover Design, White Mesa Mill,
October 1996.
Updated Tailings Cover Design Report

Energy Fuels Resources (USA) Inc. MWH Americas, Inc.
E-6 August 2015
U.S. Department of Energy (DOE), 1989. Technical Approach Document, Revision II, UMTRA-
DOE/AL 050425.0002, Uranium Mill Tailings Remedial Action Project, Albuquerque, New Mexico.

Utah Department of Environmental Quality, Utah Division of Radiation Control (DRC). 2012. Denison Mines (USA) Corp’s White Mesa Reclamation Plan, Rev. 5.0, Interrogatories -
Round 1. March.
Utah Department of Environmental Quality, Division of Radiation Control (DRC), 2013. Review
of August 15, 2012 (and May 31, 2012) Energy Fuels Resources (USA), Inc. Responses to Round 1 Interrogatories on Revision 5 Reclamation Plan Review, White Mesa Mill, Blanding, Utah, report dated September 2011. February 13.
Western Colorado Testing, Inc., 1999. Report of Soil Sample Testing of Tailings Collected from Cell 2 and Cell 3, Prepared for International Uranium (USA) Corporation. May 4.

CELL 4A
CELL 4B
LEGEND:
5605
SLOPE STABILITY
CROSS SECTION A LOCATION FIGURE E.1
WMM SLOPE STABILITY
WHITE MESA MILL TAILINGS RECLAMATION
AUG 2015
KEY MAP
CELL 1
CELL 2
CELL 3
CELL 4B
CELL 4A
AREA SHOWN
AT RIGHT
Energy Resources (USA) Inc.Fuels
A
-
CELL 2
0.5
%
0.5
%
1.
0
%
CELL 1
CELL 1 DISPOSAL AREA
HIGH POINT
SLOPE STABILITY
CROSS SECTION B LOCATION FIGURE E.2
WMM SLOPE STAB B
WHITE MESA MILL TAILINGS RECLAMATION
AUG 2015
KEY MAP
CELL 1
CELL 2
CELL 3
CELL 4B
CELL 4A
AREA SHOWN
IN DRAWING
Energy Resources (USA) Inc.Fuels
B
-
LEGEND:
5605
PROJECT
Cross Section A on Cell 4A Slope Stability
Analysis Model Profile
TITLE
DATE
FILENAME
FIGURE E.3
White Mesa Mill Reclamation
AUG 2015
AppendixE SlopeStabilityResults.pptx
EFRI -White Mesa Mill
Cross Section A
Closure
5,780
5.760
5,740
5,720
5,700
-5,600 ....... ~ 5,600
c RIPRAP & RIPRAP FILTER
RECLAIMED EMBANKMENT
SLOPE COVER SYSTEM
0 5.640
....... ro 5,620 EXISTING GROUND > Cl,) 5.00~ SURFACE w 5,5&'.l TAILINGS
·----------------------5,500
5,540
5,520 BEDROCK
5,&00
5.400
0 too 150 400 450 70~ 8E-O
Distance (ft)
~Energy Fuels Resources (USA) Inc.
~MWH ..
PROJECT
Cross Section A on Cell 4A Slope Stability
Analysis Static Conditions -Deep Circular
TITLE
DATE
FILENAME
FIGURE E.4
White Mesa Mill Reclamation
AUG 2015
AppendixE SlopeStabilityResults.pptx
EFRI -White Mesa Mill
Cross Section A
Closure
Static Loading Conditions
Required Factor of Safety: 1.5
5,730
5,760
5,740
5,no
: H :.:3~i :
5,700
,,-... 5,630
~
:~ ~~: ~j :\~· . \. . . . \ i : : : : : t ~~ RECLAIMED EMBANKMENT COVER SYSTEM 5,660 .._,
c: 5,640 .2 -5,620 ctl
RIPRAP & RIPRAP FILTER SLOPE
EXISTING GROUND > <I) 5,600
w 5,530
SURFACE ~
__ .,..,..,,-...i....i&.. TAILINGS
~----------------------------5,560
5,540 ROCK APRON RIPRAP
S,520 BEDROCK
5,500
5,430
0 50 100 150 200 250 300 350 400 450 500 550 600 650 700 750 600 850
Distance (ft)
~Energy Fuels Resources (USA) Inc.
({ID MWH
PROJECT
Cross Section A on Cell 4A Slope Stability Analysis
Pseudo-Static Conditions -Deep Circular
TITLE
DATE
FILENAME
FIGURE E.5
White Mesa Mill Reclamation
AUG 2015
AppendixE SlopeStabilityResults.pptx
EFRI -White Mesa Mill
Cross Section A
Closure
Pseudo-Static (k = 0.1 g) Loading Conditions
Required Factor of Safety: 1.1
5,780
5,761)
5,740
5,720
5,700
...-._ 5,e.80 ......., ,.__ 5.600
c 5,Mll 0
~: \:
·.,, -t •
'' ~ M
• l.J"') • • 'v' '~-
• ·°t--71~ • • • ~ ': . ~~ ... . .. " . . .
..... ""\"''
• •2.53•\ ~ . ·~' . . .\ .\ ,_,.. ..
RJ'PRAP & RIPRAP FILTER
......., ro 5,620 EXISTING GROUND > ()) 5,e-00 SURFACE
w 5,500
RECLAIMED EMBANKMENT
SLOPE COVER SYSTEM
TAILINGS
·------------~---------5.U!O
5,54'1
5,52\'.l BEDROCK
5,WO
5,400
0 100 150 200 2:0 400 450 5E-O 700 700
Distance (ft)
~Energy Fuels Resources (USA) Inc.
({ID MWH
PROJECT
Cross Section A on Cell 4A Slope Stability
Analysis Static Conditions -Shallow
TITLE
DATE
FILENAME
FIGURE E.6
White Mesa Mill Reclamation
AUG 2015
AppendixE SlopeStabilityResults.pptx
EFRI -White Mesa Mill
Cross Section A
Closure
Static Loading Conditions
Required Factor of Safety: 1.5
5,780
5,760
5.740
5,720
5,700
........ 5,680
: ~hl· : : : : ] .....
• • • • • Note: Shallow slip surface located here • ,y.05• through riprap and riprap filter.
\ c;;Q • • •
6'\\: : : : RECLAIMED EMBANKMENT s 5,660
c: RIPRAP & RIPRAP FILTER SLOPE COVER SY STEM
0 5,640
;: ro 5,620 > Q.) 5,600
EXISTING GROUND
SURFACE w 5,580 TAILINGS
·----------------·----------~-5,500
5,540 ROCK APRON RIPRAP
5,520 BEDROCK
5,500
5,480
0 100 150 200 250 3()0 .3.50 400 450 500 550 6()0 650 700 750 800 850
Distance (ft)
~Energy Fuels Resources (USA) Inc.
({ID MWH
PROJECT
Cross Section A on Cell 4A Slope Stability
Analysis Pseudo-Static Conditions -Shallow
TITLE
DATE
FILENAME
FIGURE E.7
White Mesa Mill Reclamation
AUG 2015
AppendixE SlopeStabilityResults.pptx
EFRI -White Mesa Mill
Cross Section A
Closure
Pseudo-Static (k = 0.1 g) Loading Conditions
Required Factor of Safety: 1.1
5,780
5,760
5,740
5,720
5,700
....--. 5,680 e, 5,660 c: 5,640 0 :;::: ro 5,620 > Q) 5,800
UJ 5,5"80
5.560
5,540 ROCK APRON RIP
5,520
5,000
5,480
0 5() 100 150 200 250 300 350
BEDROCK
400 450 500
Distance (ft)
~Energy Fuels Resources (USA) Inc.
COVER SYSTEM
TAILINGS
550 600 650 700 750 800 850
({ID MWH
PROJECT
Cross Section B on Cell 1 Slope Stability Analysis
Model Profile
TITLE
DATE
FILENAME
FIGURE E.8
White Mesa Mill Reclamation
AUG 2015
Appendix E Slope Stability Results.pptx
EFRI -White Mesa Mill
Cross Section B
Closure
CLAY LINER COVER SYSTEM
5,530
RECLAIMED EMBANKMENT
SLOPE RIPRAP & RIPRAP FILTER
5,520
.-. ~ ._. 5,500 c 0 :;:::; 5,590 ct! > Q)
jjj 5.580
5,570
5,550
5,550
0
CONTAMINATED SOILS I
MILL DEBRIS
BEDROCK
100 200
Distance (ft)
300
~Energy Fuels Resources (USA) Inc.
ROCK APRON (RIPRAP)
400 500
({ID MWH
PROJECT
Cross Section B on Cell 1 Slope Stability Analysis
Static Conditions -Deep Circular
TITLE
DATE
FILENAME
FIGURE E.9
White Mesa Mill Reclamation
AUG 2015
Appendix E Slope Stability Results.pptx
EFRI -White Mesa Mill
Cross Section 8
Closure
Static Loading Conditions
Required Factor of Safety: 1.5
CLAY LINER COVER SYSTEM RECLAIMED EMBANKMENT
SLOPE RIPRAP & RIPRAP FILTER 5,630
5,620
5,610
~ ...... ~ 5,600 c
0 5,500 ...... ro > <D 5,5&0
w 5,570 BEDROCK
5,560
5,5:0
0 100 300
Distance (ft)
~Energy Fuels Resources (USA) Inc.
({ID MWH
PROJECT
Cross Section B on Cell 1 Slope Stability Analysis
Pseudo-Static Conditions -Deep Circular
TITLE
DATE
FILENAME
FIGURE E.10
White Mesa Mill Reclamation
AUG 2015
Appendix E Slope Stability Results.pptx
EFRI -White Mesa Mill
Cross Section B
Closure
Pseudo-Static Loading Conditions
Required Factor of Safety: 1.1
MJO
5,621'.l
5,610 -....... ::t:::;.. 5.600 c 0 5,590 ~ ro > Q) 5,500
w
CLAY LINER COVER SYSTEM
CON TAM I NA TED SOILS I
MIU DEBRIS
FOUNDATION
5,570 BEDROCK
5.500
5,5..'()
0 100 200 300
Distance (ft)
~Energy Fuels Resources (USA) Inc.
({ID MWH
PROJECT
Cross Section B on Cell 1 Slope Stability Analysis
Static Conditions -Shallow Circular
TITLE
DATE
FILENAME
FIGURE E.11
White Mesa Mill Reclamation
AUG 2015
Appendix E Slope Stability Results.pptx
EFRI -White Mesa Mill
Cross Section B
Closure
Static Loading Conditions
Required Factor of Safety: 1.5
~· (.\ ... • ,~ '. • • 2 64 •• • --t .. .. • .·ll (""):.·~· • r..!~,: .. ! ...... \,<M 1• •• d'1':1 • •••• .. : . -.· .· .. .. • • -;5; •• • • • • .:rJ!.. ... ... • .. . . . . . . . . ..
CLAY LINER COVER SYSTEM
ii.839
RECLAIMED EMBANKMENT
SLOPE RIPRAP & RIPRAP FILTER
5,620
5,610
~ ...... ~ 5.eoo c
0 5.~ ...... ro > Q} 5,580
w 5,510
5,.560
5,550
0
CONTAMINATED SOILS I
MILL DEBRIS
BEDROCK
100 200
Distance (ft)
F;(J/: Energy Fuels Resources (USA) Inc.
400
({ID MWH
PROJECT
Cross Section B on Cell 1 Slope Stability Analysis
Pseudo-Static Conditions -Shallow Circular
TITLE
DATE
FILENAME
FIGURE E.12
White Mesa Mill Reclamation
AUG 2015
Appendix E Slope Stability Results.pptx
EFRI -White Mesa Mill
Cross Section B
Closure
Pseudo-Static (k = 0.1g) Loading Conditions
Required Factor of Safety: 1.1
• • • . . ~
: : • J,'{71 .... A.II: .... • • • • • • • • • • • • ~ . . . . . . . . ·• . . . . . . . '• . . . . . . . • • • • • • • ~ . . . . . . < ~ • • • • • ,, . . . . .
CLAY LINER COVER SYSTEM RECLAIMED EMSANKMENT • • SLOPE RIPRAP & RIPRAP FILTER 5,630
5,620
5,610 -¢::: .._... 5,600 c 0 5,590 iii > Cl) 5.580
w
5,570 BEDROCK
5,560
5,550
0 100 200 300 400
Distance (ft)
F;(J/: Energy Fuels Resources (USA) Inc.
500
({ID MWH
PROJECT
Cross Section B on Cell 1 Slope Stability Analysis
Static Conditions -Block
TITLE
DATE
FILENAME
FIGURE E.13
White Mesa Mill Reclamation
AUG 2015
Appendix E Slope Stability Results.pptx
EFRI -White Mesa Mill
Cross Section B
Closure
Block Failure -Static Loading
Required Factor of Safety: 1.5
2.76 .-
CLAY LINER COVER SYSTEM RECLAIMED EMBANKMENT
SLOPE RIPRAP & RIPRAP FILTER 5,630
5.620
5.010
~ ..... ...... 5,000 ~
c 0 5.~~ -m > Q) 5,580
[iJ 5,570 BEDROCK
5,500
5,550
0 too 200 400
Distance (ft)
~Energy Fuels Resources (USA) Inc.
500
({ID MWH
PROJECT
Cross Section B on Cell 1 Slope Stability Analysis
Pseudo-Static Conditions -Block
TITLE
DATE
FILENAME
FIGURE E.14
White Mesa Mill Reclamation
AUG 2015
Appendix E Slope Stability Results.pptx
EFRI -White Mesa Mill
Cross Section B
Closure
Block Failure -Pseudo-Static (k = 0.1 g) Loading Conditions
Required Factor of Safety: 1.1
1.80 .-
CLAY LINER COVER SYSTEM
5,630
RECLAIMED EMBANKMENT
SLOPE RIPRAP & RIPRAP FILTER
5,620
5,610 ----......, ::=. 5.COO c
0 5,59ll -ro > Q) 5,580
[iJ
5,570 BEDROCK
5,:00
5.550
0 100 400
Distance (ft)
F;(!/: Energy Fuels Resources (USA) Inc.
500
({ID MWH

Updated Tailings Cover Design Report

APPENDIX F

SETTLEMENT AND LIQUEFACTION ANALYSES

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F.1 BACKGROUND
This appendix presents results of settlement analyses and evaluation of liquefaction potential of
tailings for the Energy Fuels Resources (USA) Inc. (EFRI) White Mesa Uranium Mill tailings
disposal cells. These analyses are an update to the settlement and liquefaction analyses presented in MWH (2011) to address State of Utah, Division of Waste Management and
Radiation Control (DWMRC) (formerly Utah Division of Radiation Control, DRC) interrogatories
(DRC, 2012) and review comments on EFRI responses to 2012 interrogatories (DRC, 2013). These analyses also incorporate (1) the revised cover grading design, (2) results of cover
material testing conducted in 2010 and 2012 (summarized in Attachment B of EFRI, 2012), (3)
results of the recent site-specific probabilistic hazard analysis (presented in MWH, 2015a), (4) results of tailings testing conducted in 2013 (presented in MWH, 2015b), and (5) updated
calculation methods for the seismic settlement and liquefaction potential.
Settlement analyses were conducted to evaluate settlement due to placement of final cover,
dewatering of the tailings cells, long-term static (creep) settlement, and seismically induced (seismic) settlement. The results of these analyses were used to evaluate differential
settlement and the potential for cover cracking. The settlement analyses are discussed in
Section F.2. The tailings cells were also evaluated for liquefaction potential and discussion is provided in Section F.3.

The monolithic ET cover system evaluated in this appendix consists of the following layers from top to bottom:

• 0.5 ft (15 cm) Erosion Protection Layer (gravel-admixture)

• 3.5 ft (107 cm) Water Storage/Biointrusion/Frost Protection/Radon Attenuation Layer
(loam to sandy clay)

• 3.0 to 4.0 ft (91 to 122 cm) Radon Attenuation Layer (highly compacted loam to sandy
clay)
• 2.5 ft (75 cm) Radon Attenuation and Grading Layer (loam to sandy clay)
F.2 SETTLEMENT ANALYSES F.2.1 Method of Analyses
General. One-dimensional (1-D) settlement analyses were conducted for the tailings in Cells 2 and 3 to estimate total potential future settlement of the tailings after placement of the final
cover. The cone penetration testing (CPT) locations from the October 2013 tailings
investigation (MWH, 2015b) were selected as the locations for the settlement analyses. The CPT locations are shown on Figure F.1, along with the settlement monument locations. All CPT
locations were adjacent to settlement monuments. The settlement analyses were conducted for two time periods as described below.
1. Settlement during active maintenance. This settlement was calculated as the
settlement due to placement of the final cover and dewatering. Water levels during

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active maintenance were assumed to be drawn down from water level elevations
presented in MWH (2015b) for the October 2013 tailings elevation to five feet above the liner. EFRI proposes to dewater the tailings during active maintenance and
draw down the water levels with in Cells 2 and 3 such that there are not issues with
cover stability. This water level has been assumed as 5 feet for these analyses. Once dewatering to this water level has been completed, remaining primary
consolidation due to placement of the cover will be very small.
2. Settlement after active maintenance. This settlement was calculated as the sum of
settlement due to creep and seismic settlement. The water level within the tailings
was assumed to be located five feet above the liner after active maintenance based EFRI’s plan for dewatering during active maintenance for Cells 2 and 3.
1-D Column Geometry. Vertical soil profiles presented in MWH (2015b) for each CPT location
were used in the 1-D consolidation analyses, with the water levels presented in that report being
used for initial pore pressure conditions. This assumption is considered conservative since
water levels will continue to decrease due to dewatering prior to final cover placement. Cover thicknesses are based on the cover design as listed above, with total cover thicknesses of 10.5
and 10 feet for Cells 2 and 3, respectively. The stress state for the layers within each column is calculated at the midpoint of each tailings layer. Additional vertical column geometry details are provided in Attachment F.1.
Total Settlement During Active Maintenance. Settlement during active maintenance is
assumed to be due to primary consolidation caused by cover loading and dewatering (i.e. creep
and initial compression are neglected). Settlement is calculated using the following equation: S =CCH1+e0 log 𝜎𝜎’f𝜎𝜎’i

Where:
S = settlement Cc = compression index
H = thickness of tailings layer (ft)
ei = initial void ratio of tailings
σ’i = initial average effective overburden pressure (psf)
σ’f = final effective vertical pressure (psf)
Total Settlement After Active Maintenance. Settlement after active maintenance is completed is assumed to be due to creep and seismic settlement.
Creep Settlement. Creep settlement was calculated using the method presented in Holtz and Kovacs (1981) and assuming a typical value for the ratio of the secondary compression index to
the compression index (Cα/Cc) of 0.02 based on the upper bound average Cα estimated from
laboratory testing on sand-slime and slime tailings (MWH, 2015b). The secondary settlements are based on a time period of 1,000 years.
Seismic Settlement. Seismic settlement was estimated using methods presented in Stewart et al. (2004), and seismic parameters presented in the site-specific probabilistic seismic hazard
analysis for the site (MWH, 2015a). The mean peak ground acceleration (PGA) for reclaimed

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(long-term) conditions is 0.15 g for an average return period of 10,000 years. The mean seismic
source is from a magnitude 5.5 event occurring 20 km from the site. The equations used from Stewart et al. (2004) are provided below.

Shear strain and related equations:

Where:
γ : shear strain PI: plasticity index
σ’: effective stress
pa : atmospheric pressure (calculated for an average elevation of 5,600 feet for the site) Geff: effective shear modulus
Gmax: small strain shear modulus
PHA: peak horizontal acceleration σo: total overburden pressure
rd: reduction factor, ratio of actual shear stress at depth vs. theoretical “rigid body” shear
stress g: acceleration due to gravity
Volumetric strain at 15 cycles equation:

Where:

εν, Ν=15 : volumetric strain at 15 cycles
a, b, and γtν: material-specific constants (estimated based on relative compaction, soil
type, fines content, and plasticity using Figures 6.5 – 6.7 in Stewart et. al, 2004)
γc: shear strain (same as shear strain,γ, listed above)

Volumetric strain for design event:

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εν = εν, Ν=15∗Cn*2

Where:
εν : volumetric strain for design event CN: normalized vertical strain
R: slope parameter (estimated as 0.36, 0.32, and 0.34 for soils with non-plastic fines,
soils with low-plasticity fines, and soils with medium plasticity fines, respectively, as presented in Stewart et al., 2004 pages 86 through 89)
N: equivalent number of uniform strain cycles
c: slope parameter estimated from equation listed above b1: 1.53 (Stewart et al., 2004)
b2: 1.51 (Stewart et al., 2004) c1: 0.75 (Stewart et al., 2004)
c2: 0.095 (Stewart et al., 2004)
β: 3.2 (Stewart et al., 2004) m*: 5.8 (Stewart et al., 2004)
m: design earthquake magnitude
r: site-source distance (km) S: equal to 0 if rock or shallow soil (<20m) underlies the fill and 1 if >20m underlies the
fill
F.2.2. Material Properties
EFRI conducted a tailings investigation of Cells 2 and 3 in October 2013 at the White Mesa Mill
site to collect site-specific tailings data to supplement existing tailings data used for the settlement analyses. The results are presented in MWH (2015b). The tailings profiles and
properties used for the settlement analyses are based on the results presented in MWH
(2015b). Parameters used for the cover materials are based on cover material testing conducted in 2010 and 2012 (summarized in Attachment B of EFRI, 2012). Parameters used for
the settlement analyses are summarized in Table F.1 and discussed in the following paragraph.
Additional detail on soil properties and consolidation parameters used in the analyses are provided in Attachments F.1 through F.3.

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Table F.1 Summary of Soil Parameters used for Settlement Analyses
Material Type
Initial
Dry Density
(pcf)
Specific Gravity
Initial
void Ratio,
e
Average Percent
Passing No. 200
Sieve (%)
Com-
pression Index,
Cc
Secondary Com-pression
Index, Cα
Erosion Protection Layer (topsoil) 1001 2.611 0.612 511 0.143 NA
Erosion Protection Layer (rock mulch) 1061 2.621 0.542 451 0.143 NA
Evapotransporation Cover Layer 1001 2.631 0.642 511 0.143 NA
High-Compaction Cover Layer 1121 2.631 0.462 511 0.143 NA
Platform Fill/Interim Cover 941 2.631 0.742 511 0.143 NA
Sand Tailings 975 2.705 0.742 185 0.126 0.0024
Sand-Slime Tailings 885 2.805 0.992 475 0.245 0.0054
Slime Tailings 785 2.865 1.29 2 715 0.285 0.0064
1From laboratory values presented in EFRI (2012) 2Calculated value
3 Calculated from empirical equation for soil types similar to cover material (as presented in Holtz and Kovacs, 1981).
4 Estimated from laboratory results presented in MWH (2015b), upper bound average Cα for sand-slime and slime tailings of 0.02 5From laboratory results presented in MWH (2015b)
6Based on lab testing performed on uranium tailings sands and presented in Keshian and Rager (1988) Additional assumptions for soil parameters used in the analyses are provided below.

• For the consolidation, dewatering, and creep settlement analyses, the moist unit weight
for all tailings layers (saturated and unsaturated) was estimated as the saturated unit
weight which results in a conservative estimate of loading.
• For the consolidation, dewatering, and creep settlement analyses, properties of the
layers of tailings between the liner and the bottom of the CPT depth were estimated as sand-slime tailings. The sand-slime tailings comprise approximately 65 percent of the
total tailings in Cells 2 and 3.
• For calculating loading conditions for seismic settlement and evaluation of liquefaction,
the moist unit weight for unsaturated tailings layers were estimated based on the long-
term moisture content of the tailings as presented in the radon emanation modeling.
• Initial stress conditions for liquefaction analyses were estimated using CPT data from
MWH (2015b) assuming the initial conditions in the future will be the same as in October 2013. This is conservative as it does not account for the effects of consolidation and
aging that will occur in the tailings during the active maintenance period. For the seismic
settlement analyses of Cell 3, the average shear wave velocities with depth measured for Cell 2 tailings were used in the analyses to partially account for consolidation and
aging that will occur during this period. These values range from 460 to 600 feet per
second. Tailings in Cell 2 were placed earlier than Cell 3 and have been actively dewatered since 2009. This use of the shear wave velocities measured in October 2013
is conservative for these analyses for both tailings cells since further densification of the
tailings will occur during the active maintenance period.

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F.2.3 Results
As discussed previously, settlement analyses were conducted for two time periods to estimate
future settlement (1) settlement during active maintenance due to final cover placement and
dewatering, and (2) settlement after active maintenance due to creep and seismic settlement. The results are summarized in Tables F.2 and F.3 and Figures F.2 and F.3. The spreadsheet
calculations of are provided in Attachments F.1 (settlement due to dewatering of tailings and
placement of final cover), F.2 (creep settlement), and F.3 (seismic settlement). Total settlement during active maintenance is conservatively estimated to range from 0.9 to 1.6 feet. Total
remaining settlement due to dewatering from 5 feet above the liner to the liner is approximately
0.01 feet. Total potential future settlement due to creep is estimated to range from 0.05 to 0.09 feet, and due to seismic settlement is estimated to range from 0.23 to 0.62 feet. The total
potential future long-term settlement due to creep and seismic settlement of the tailings is estimated to range from 0.29 to 0.71 feet. The estimates of total long term settlement were
calculated by summing the static creep settlement estimate and the seismic settlement
estimates. As such, these estimates are considered to be somewhat conservative as they are not independent (i.e. as long-term static creep progresses, void ratio reduction will occur and the potential for seismic settlement will reduce over time as a result). Table F.2 Future Settlement During Active Maintenance
Location
Settlement due to Consolidation and
Dewatering Prior to t1 (ft)
2W2 1.09
2W3 1.15
2W4-C 1.29
2W5-C 1.26
2W6-S 1.29
2W7-C 1.17
2E1 1.30
3-1S 0.88
3-2C 1.19
3-3S 1.47
3-4N 1.56
3-6N 1.34
3-8N 1.03
3-8S 1.06
Notes: t1 corresponds to dewatering of the tailings to a level 5 feet above the liner

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Table F.3 Future Settlement After Active Maintenance
Location
Settlement due to 1000 years of Creep (ft)
Seismic
Settlement (ft)
Total Potential Future Settlement after Active Maintenance (ft)
2W2 0.06 0.35 0.41
2W3 0.05 0.36 0.42
2W4-C 0.05 0.43 0.48
2W5-C 0.07 0.49 0.56
2W6-S 0.06 0.48 0.54
2W7-C 0.06 0.35 0.40
2E1 0.07 0.47 0.54
3-1S 0.05 0.23 0.29
3-2C 0.05 0.40 0.45
3-3S 0.09 0.41 0.50
3-4N 0.09 0.62 0.71
3-6N 0.06 0.54 0.60
3-8N 0.05 0.34 0.39
3-8S 0.08 0.35 0.43

F.2.4 Differential Settlement and Cover Cracking Potential
Differential Settlement. After placement of the final cover and during active maintenance,
additional fill may be placed in any low areas to maintain positive drainage of the cover surface. Therefore, the critical time period where differential settlement is a concern for the cover grading
(i.e. potential for slope reversal) is after active maintenance is complete. Potential maximum future settlement after active maintenance is estimated as 0.29 to 0.71 feet. Based on the settlement analyses results as shown on Figure F.2, the critical location for the ratio of
maximum differential settlement over distance is estimated to occur between the CPT location 3-3S and the dike between Cells 3 and 4A (conservatively assuming no settlement of the dike
fill). Although the differential settlement is higher between CPT location 3-4N and 3-6N and the
dike between Cells 2 and 3, differential settlement at these location would result in an increase in cover slope, therefore the former location is more critical for slope reversal. Locations on Cell
2 with higher settlement (2W4-C, 2W5-C, 2W6-S) than the 3-3S location are located within the
center of Cell 2, however the highest differential settlement associated with these points is lower than the selected critical case.

The total potential differential settlement between 3-3S and the dike between Cells 3 and 4A is 0.50 feet over a distance of approximately 175 feet. The estimated differential settlement is
sufficiently low such that ponding and slope reversal is not expected to occur. These
calculations are based on conservative assumptions for seismic settlement with little to no credit taken for densification of tailings prior to placement of final cover and during active maintenance
of the tailings cells. In addition, as mentioned above, creep and seismic settlement are not independent, however they have been treated as such in the calculations. Actual differential settlement for long-term (after active maintenance) conditions is expected to be lower.

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Cover Cracking. Cover cracking analyses were performed for the highly-compacted radon
barrier. The critical location for the cover cracking analyses for maximum differential settlement due to final cover placement, dewatering of tailings, creep, and a seismic event is 2.27 feet
between the settlement monument 3-4N and dike between Cells 2 and 3 as shown on Figure
F.3. This location has the maximum differential settlement over the shortest horizontal distance. The maximum differential settlement, assuming there is no settlement of the dike, is 2.27 feet.
The horizontal distance between the two locations is approximately 150 feet.
Morrison-Knudsen Environmental Corporation (1993) presents a method for determining the
tensile strain required to cause cracking of the radon barrier as a function of the plasticity index
(PI) of the soil. The tensile strain at cracking is calculated by the equation below:
εf (%) = 0.05 +0.003 x (PI)
where: εf(%) = tensile strain to cause cracking of the radon barrier
PI = plasticity index of radon barrier
The PI value for the highly compacted radon attenuation layer was estimated as the weighted average (based on soil volumes) of the measured PIs (11) for composite samples collected during the 2010 and 2012 borrow investigations (see Attachment B of EFRI, 2012). Using this
value for PI, the minimum tensile strain that will induce cracking is 0.08 percent. The maximum settlement-induced horizontal tensile strain on the radon attenuation layer must be less than 0.08 percent so that cover cracking will not occur.
The horizontal movement at the top of the radon barrier can be calculated based on the
following equation (Lee and Shen, 1969), which is referenced in NUREG 1620 (NRC, 2003) for
cover cracking analysis:
αHm3
2=

where: m = horizontal movement in feet H = thickness of relatively incompressible material (in this analysis H is the
thickness of the highly compacted radon barrier)
α = local slope of the settlement profile (expressed as decimal fraction)
Horizontal movement at the maximum tailing thickness is calculated to be 0.035 feet using a maximum thickness of relatively incompressible material of 3.5 feet, and a total differential settlement of 2.27 feet over 150 feet. The thickness of relatively incompressible material was
estimated assuming a maximum 3.5-ft highly compacted radon barrier for Cell 3. The peak horizontal movement is assumed to be twice the average horizontal movement based on
relationships presented in Gourc et al. (2010) and Rajesh and Viswanadham (2010). The peak
horizontal movement is then calculated as 0.07.
The horizontal strain between any two settlement monitoring locations is the maximum horizontal movement divided by the horizontal distance (0.07 ft/150 ft). Using these values, the maximum horizontal strain is calculated as 0.05 percent. This value is lower than the maximum
allowable strain of 0.08 percent and indicates that cracking of the radon attenuation layer due to settlement is not expected.

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F.3 LIQUEFACTION ANALYSIS
F.3.1 Method of Analysis

Two procedures were used to evaluate the potential for liquefaction of the tailings based on the results of the CPT soundings. These methods (Idriss and Boulanger, 2008; Youd et al., 2001)
are described below. The average factor of safety calculated from the two methods was used
as the factor of safety for evaluating the liquefaction potential of the tailings.
Idriss and Boulanger (2008). The Idriss and Boulanger (2008) liquefaction triggering method
estimates the cyclic stress ratio (CSR) based on the seismic design criteria and estimates the cyclic resistance ratio (CRR) based on the CPT readings and site conditions. CSR is
calculated using a simplified procedure to estimate earthquake induced stresses, calculated using the following relationship: 𝐶𝐶𝐶𝐶𝐶𝐶𝑀𝑀=7.5,𝜎𝜎′𝑣𝑣𝑣𝑣=1 =0.65 𝑎𝑎𝑚𝑚𝑚𝑚𝑚𝑚𝑔𝑔𝜎𝜎𝑣𝑣𝑣𝑣𝜎𝜎′𝑣𝑣𝑣𝑣1𝑀𝑀𝐶𝐶𝑀𝑀1𝐾𝐾𝜎𝜎1𝐾𝐾𝛼𝛼
Where:

amax: maximum horizontal ground surface acceleration σvc’: effective vertical confining stress
σvc: total vertical confining stress
MSF: earthquake magnitude scaling factor Kσ: overburden correction factor
Kα: static shear stress correction factor g: acceleration due to gravity

The equations for the correction factors applied to the CSR for this evaluation are the following:

Where:
rd: shear stress reduction coefficient qc1N: tip resistance normalized to atmospheric pressure and overburden pressure
z: depth below ground surface

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Pa: atmospheric pressure (calculated for an average elevation of 5,600 feet for the site)
M: design earthquake magnitude
The tailings pile was evaluated assuming essentially flat ground, and ignored the effects of the
slope at the edge of the tailings pile. Thus, a static shear stress correction factor of Kα=1 was used for all calculations.

The relationship for CRR is based on liquefaction case histories and is expressed as:
Where:
qc1Ncs: equivalent clean-sand corrected normalized tip resistance

FC = Fines Content in %
The factor of safety against liquefaction was computed as:
The correlation between CSR, CRR, and qc1N is shown in Figure 67 of Idriss and Boulanger (2008).
Youd et al. (2001). The Youd et al. (2001) liquefaction triggering method estimates the CSR
based on the seismic design criteria and estimates the CRR based on the CPT readings and
site conditions. CSR is calculated using a simplified procedure to estimate earthquake induced stresses, calculated using the following relationship:
𝐶𝐶𝐶𝐶𝐶𝐶𝑀𝑀=7.5,𝜎𝜎′𝑣𝑣𝑣𝑣=1 =0.65 𝑎𝑎𝑚𝑚𝑚𝑚𝑚𝑚𝑔𝑔𝜎𝜎𝑣𝑣𝑣𝑣𝜎𝜎′𝑣𝑣𝑣𝑣1𝑀𝑀𝐶𝐶𝑀𝑀1𝐾𝐾𝜎𝜎1𝐾𝐾𝛼𝛼
Where:
amax: maximum horizontal ground surface acceleration
σvc’: effective vertical confining stress σvc: total vertical confining stress
rd: shear stress reduction coefficient

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MSF: earthquake magnitude scaling factor
Kσ: overburden correction factor Kα: static shear stress correction factor
g: acceleration due to gravity
The equations for the correction factors applied to the CSR for this evaluation are the following:

Revised Idriss Scaling Factor:

Where:
z: Depth below ground surface
Mw: Design earthquake magnitude Pa: Atmospheric Pressure
σvc’: effective vertical overburden pressure
f=0.7 to 0.8 for 40% ≤ relative density, Dr ≤ 60% 0.6 to 0.7 for 60% < relative density, Dr ≤ 80%
𝐷𝐷𝑟𝑟=�𝑞𝑞𝑣𝑣1𝑛𝑛300
The tailings pile was evaluated assuming flat ground conditions. Thus, a static shear stress
correction factor of Kα=1 was used for all calculations.
The relationship for CRR is based on liquefaction case histories and is expressed as:

Where:
qc1Ncs = Kc* qc1N

The factor of safety against liquefaction was computed as:

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The correlation between CSR, CRR, and qc1N is shown in Figure 4 of Youd et al. (2001).
F.3.2. Material Properties

Liquefaction evaluation was performed for all CPT locations from the October 2013 tailings investigation (MWH, 2015b). The liquefaction evaluation used the same assumptions for soil profile, water table elevation, and density of the tailings material as described above for the
long-term settlement analyses. Other parameters used for the evaluation were based on CPT data as presented in Attachment F.4 and as outlined in Idriss and Boulanger (2008) and Youd et al. (2001). It is assumed that the compacted cover materials are not susceptible to liquefaction
and therefore were not included in the analyses.
F.3.3. Site Seismicity Results of the site-specific probabilistic seismic hazard analysis presented in MWH (2015a)
were used in the analysis of liquefaction potential. The mean peak ground acceleration for
reclaimed (long-term) conditions is 0.15 g for an average return period of 10,000 years. The mean seismic source is from a magnitude 5.5 event occurring 20 km from the site.
F.3.4 Results

Table F.4 presents a summary of the results of the liquefaction analysis. Further details of the calculation can be found in Attachment F.4. Table F.4 Summary of Liquefaction Results
Location Minimum Factor of Safety
2W2 2.58
2W3 2.37
2W4-C 2.11
2W5-C 2.08
2W6-S 2.24
2W7-C 2.10
2E1 1.96
3-1S 2.41
3-2C 2.59
3-3S 2.36
3-4N 2.46
3-6N 2.30
3-8N 2.84
3-8S 2.38

Updated Tailings Cover Design Report

Energy Fuels Resources (USA) Inc. MWH Americas, Inc.
F-13 August 2015
Based on the factors of safety presented in Table F.4, the tailings are judged not to be
susceptible to earthquake-induced liquefaction. The computed factors of safety against liquefaction range from 2.0 to 2.6.
F.4 CONCLUSIONS
Evaluation total settlement due to final cover placement and dewatering indicates potential
future settlement during the active maintenance to range from approximately 0.9 to 1.6 feet. During this time, additional fill can be placed in any low areas in order to maintain positive
drainage of the cover surface. The total predicted future long-term settlement that could occur
(due to creep and seismic settlement) after the maintenance time period is complete is estimated to range from approximately 0.3 to 0.7 feet. The estimates of total long-term
settlement were calculated by summing the static creep settlement estimate and the seismic settlement estimates. As such, these estimates are considered to be somewhat conservative as they are not independent (i.e. as long-term static creep progresses, void ratio reduction will
occur and the potential for seismic settlement will reduce over time as a result). The estimated differential settlement after completion of active maintenance is sufficiently low that slope reversal and ponding is not expected to occur on a cover slope of 0.5 to 1.0 percent. In
addition, the results indicate that cracking of the highly-compacted radon barrier due to settlement-induced strains is not expected. The results of the liquefaction analyses indicate the
tailings are not susceptible to earthquake-induced liquefaction.
Similar results are expected for Cells 4A and 4B. Although Cells 4A and 4B have higher tailings
thicknesses, these cells have a more effective dewatering systems and a low water level
requirement for dewatering. These cells also have a slightly steeper average cover slope (approximately 0.8 percent) than Cells 2 and 3.
F.5 REFERENCES
Energy Fuels Resources (USA) Inc. (EFRI), 2012. Responses to Interrogatories – Round 1 for Reclamation Plan, Revision 5.0, March 2012. August 15.
Gourc, J.P., S. Camp, B.V.S. Viswanadham, and S. Rajesh, 2010. “Deformation behavior of clay cap barriers of hazardous waste containment systems: Full-scale and centrifuge
tests,” Geotextiles and Geomembranes. Elsevier. Vol. 28: 281-291.
Holtz, R.D., W.D. Kovacs, 1981. An Introduction to Geotechnical Engineering.
Idriss, I., and R. Boulanger, 2008. Soil Liquefaction During Earthquakes. EERI monograph
MNO-12.
Keshian, B., and R. Rager, 1988. Geotechnical Properties of Hydraulically Placed Uranium Mill
Tailings, in Hydraulically Fill Structures, Geotechnical Special Publication No. 21, Eds. Van Zyl, D., and Vick, S., ASCE, August.
Lee, K.L., and C.K. Shen, 1969. “Horizontal Movements Related to Subsidence.” Journal of Soil Mechanics and Foundation Division, ASCE Volume 95. January.

Updated Tailings Cover Design Report

Energy Fuels Resources (USA) Inc. MWH Americas, Inc.
F-14 August 2015
Morrison-Knudsen Environmental Corporation (Morrison-Knudsen), 1993. UMTRA-Naturita,
Embankment Design, Settlement Analysis and Cracking Potential Evaluation. Calc. No. 17-740-02-01. May.

MWH Americas, Inc. (MWH), 2011. Updated Tailings Cover Design. Prepared for Denison Mines (USA) Corp. September.

MWH Americas, Inc. (MWH), 2015a. White Mesa Mill Probabilistic Seismic Hazard Analysis Report. Prepared for Energy Fuels Resources (USA) Inc. April.

MWH Americas, Inc. (MWH), 2015b. White Mesa Mill Tailings Data Analysis Report. Prepared for Energy Fuels Resources (USA) Inc. April.
Rajesh, S. and B.V.S. Viswanadham, 2010. “Performance Assessment of Deformation Behavior of Landfill Barriers at the Onset of Differential Settlement,” International Journal of
Environmental Engineering, Vol. 2.1, pp. 269-289. Stewart, J.P., D. Whang, M. Moyneur, and P. Duku, 2004. Seismic Compression of As-
Compacted Fill Soils With Variable Levels of Fines Content and Fines Plasticity. CUREE Publication No.EDA-05. July.

U.S. Nuclear Regulatory Commission (NRC), 2003. “Standard Review Plan for the Review of a Reclamation Plan for Mill Tailings Sites Under Title II of Uranium Mill Tailings Radiation
Control Act of 1978, Final Report.” NUREG-1620. June.
Utah Department of Environmental Quality, Utah Division of Radiation Control (DRC). 2012.
Denison Mines (USA) Corp’s White Mesa Reclamation Plan, Rev. 5.0, Interrogatories -
Round 1. March.
Utah Department of Environmental Quality, Division of Radiation Control (DRC), 2013. Review of August 15, 2012 (and May 31, 2012) Energy Fuels Resources (USA), Inc. Responses to Round 1 Interrogatories on Revision 5 Reclamation Plan Review, White Mesa Mill,
Blanding, Utah, report dated September 2011. February 13. Youd, T., I. Idriss, R. Andrus, I. Arango, G. Castro, J. Christian, R. Dobry, W. Liam Finn, L.
Harder, M. Hynes, K. Ishihara, J. Koester, S. Liao, W. Marcuson, G. Martin, J. Mitchell, Y. Moriwaki, M. Power, P. Robertson, R. Seed, and K. Stokoe, 2001. Liquefaction
Resistance of Soils: Summary report from the 1996 NCEER and 1998 NCEER/NSF
Workshops of Evaluation of Liquefaction Resistance of Soils, Journal of Geotechnical and Geoenvironmental Engineering, October.

CELL 3
CELL 4B
CELL 4A
CELL 2
CELL 1
APPROXIMATE EXTENT OF CELL (TYP)
CPT-3-8S
CPT-3-6N
CPT-3-2C
(SEE NOTE 1)
(SEE NOTE 1 AND 2)
(SEE NOTE 2)
(SEE NOTE 2)
2W1 2W3
2W3-S
2W4-N
2W4-C
2W4-S
2W5-N
2W5-S
2W6-C
2W6-S
2W7-N
2W7-S
2E1-2S
2E1-1S
2E1-N
3-1N
3-1C
3-2S
3-2N
3-3N
3-3C3-7S
3-8C
3-7C
3-7N
3-6C
3-6S
(SEE NOTE 3)
(SEE NOTE 3)
APPROXIMATE
LOCATION OF
UNCOVERED AREA
(OCTOBER 2013)
CPT-2W3A
CPT-2W4-CA
CPT-3-8N
(21.65)
(4.43)
(26.57)
(9.35)
(29.20)
TAILINGS CPT SOUNDING AND
SAMPLING LOCATIONS FIGURE F.1
WMM CPT LOC
LEGEND:
(24.4)
NOTES:
ENERGY FUELS - WHITE MESA
OCTOBER 2013 TAILINGS INVESTIGATION
AUG 2015
Energy Resources (USA) Inc.Fuels
CELL 3
CELL 4B
CELL 4A
CELL 2
CELL 1
APPROXIMATE EXTENT OF CELL (TYP)
CPT-3-8S
CPT-3-6N
CPT-3-2C
2W3
2W4-C
2W6-S
APPROXIMATE
LOCATION OF
UNCOVERED AREA
(OCTOBER 2013)
CPT-3-8N
(0.42)
(0.48)
(0.54)
PREDICTED SETTLEMENT AFTER
ACTIVE MAINTENANCE FIGURE F.2
WMM CPT SETL A
ENERGY FUELS - WHITE MESA
OCTOBER 2013 TAILINGS INVESTIGATION
AUG 2015
Energy Resources (USA) Inc.Fuels
LEGEND:
(1.0)
5605
CELL 3
CELL 4B
CELL 4A
CELL 2
CELL 1
CPT-3-8S
CPT-3-6N
CPT-3-2C
2W3
2W4-C
2W6-S
APPROXIMATE
LOCATION OF
UNCOVERED AREA
(OCTOBER 2013)
CPT-3-8N
(1.56)
(1.77)
(1.83)
APPROXIMATE EXTENT OF CELL (TYP)
TOTAL PREDICTED FUTURE SETTLEMENT FIGURE F.3
WMM CPT SETL B
LEGEND:
(1.0)
ENERGY FUELS - WHITE MESA
OCTOBER 2013 TAILINGS INVESTIGATION
AUG 2015
Energy Resources (USA) Inc.Fuels
5605

Updated Tailings Cover Design Report

ATTACHMENT F.1
SETTLEMENT CALCULATIONS FOR SETTLEMENT DUE TO DEWATERING THE TAILINGS AND PLACMENT OF THE FINAL COVER
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Settlement Analyses
Notes
t0 corresponds to beginning of final cover placement Assumes 99% of consolidation due to existing stress conditions has taken place
t1 corresponds to dewatering of the tailings to a level 5 feet above the liner
t2 corresponds to completion of dewatering
TAILINGS
2.70 Specific gravity of tailing sands, Gs-TSand Based on lab testing performed on uranium tailings sands and presented in Keshian and Rager (1988)
2.80 Specific gravity of tailing sand-slimes, Gs-TS-S Average value from lab testing of samples obtained on-site (Tailings Data Analysis Report. MWH, 2015)
2.86 Specific gravity of tailing slimes, Gs-TSlime Average value from lab testing of samples obtained on-site (Tailings Data Analysis Report. MWH, 2015)
18% Fines content of tailings sands (%) Average value from lab testing of samples obtained on-site (Tailings Data Analysis Report. MWH, 2015)
47% Fines content of tailings sand-slimes (%) Average value from lab testing of samples obtained on-site (Tailings Data Analysis Report. MWH, 2015)
71% Fines content of tailings slimes (%) Average value from lab testing of samples obtained on-site (Tailings Data Analysis Report. MWH, 2015)
97 In-situ dry unit weight of tailings sands at t0, γd0-Tsand (pcf)Average value from lab testing of samples obtained on-site (Tailings Data Analysis Report. MWH, 2015)
88 In-situ dry unit weight of tailings sand-slimes at t0, γd0-TS-S (pcf)Average value from lab testing of samples obtained on-site (Tailings Data Analysis Report. MWH, 2015)
78 In-situ dry unit weight of tailings slimes at t0, γd0-Tslime (pcf)Average value from lab testing of samples obtained on-site (Tailings Data Analysis Report. MWH, 2015)
123 In-situ saturated unit weight of tailings sands at t0, γsat0-Tsand (pcf)Calculated
119 In-situ saturated unit weight of tailings sand-slimes at t0, γsat0-TS-S (pcf)Calculated
113 In-situ saturated unit weight of tailings slimes at t0, γsat0-Tslime (pcf)Calculated
123 Moist unit weight of tailings sands, γm-Tsand (pcf)Calculated, assuming 100% degree of saturation (conservative estimate of loading from these layers)
119 Moist unit weight of tailings sand-slimes, γm-TS-S (pcf)Calculated, assuming 100% degree of saturation (conservative estimate of loading from these layers)
113 Moist unit weight of tailings slimes, γm-Tslime (pcf)Calculated, assuming 100% degree of saturation (conservative estimate of loading from these layers)
0.74 Void ratio of tailing sands at t0, e0-TSand Calculated
0.99 Void ratio of tailing sand-slimes at t0, e0-TS-S Calculated
1.29 Void ratio of tailing slimes at t0, e0-TSlime Calculated
27%Saturated water content of tailings sands at t0, wsat0-TSand (%)Calculated
35%Saturated water content of tailings sand-slimes at t0, wsat0-TS-S (%)Calculated
45%Saturated water content of tailings slimes at t0, wsat0-TSlime (%)Calculated
27%Water content of moist tailings sands, wm-TSand (%)Calculated, assuming 100% saturation (conservative value used to estimate loading from these layers, actual long-term water content will be lower)
35%Water content of moist tailings sand-slimes, wm-TS-S (%)Calculated, assuming 100% saturation (conservative value used to estimate loading from these layers, actual long-term water content will be lower)
45%Water content of moist tailings slimes, wm-TSlime (%)Calculated, assuming 100% saturation (conservative value used to estimate loading from these layers, actual long-term water content will be lower)
0.12 Compression index of tailings sands, Cc-TSand Based on lab testing performed on uranium tailings sands and presented in Keshian and Rager (1988)
0.24 Compression index of tailings sand-slimes, Cc-TS-S Median value from lab testing of tailings sand-slimes samples obtained on-site (Tailings Data Analysis Report. MWH, 2015)
0.28 Compression index of tailings slimes, Cc-TSlime Median value from lab testing of tailings slimes samples obtained on-site (Tailings Data Analysis Report. MWH, 2015)
62.4 Unit Weight of Water, γW
5.0 Height of water table above liner at t1, Hsat-1 (ft)Assumed for end of active maintenance
0.0 Height of water table above liner at t2, Hsat-2 (ft)
SOIL PROPERTIES
Specific Gravity, Gs
Fines Content
Dry Unit Weight, γd
Saturated Unit Weight, γsat
Moist Unit Weight, γm
Void Ratio, e
Saturated Water Content, wSat
Water Content of Moist Tailings, wm-T
Compression Index, Cc
Other
Settlement_30Aug2015.xls Page 1 of 31
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Settlement Analyses
82.4 Atmospheric Pressure, Pa (kPa)Calculated assuming elev=5600' amsl. http://www.engineeringtoolbox.com/air-altitude-pressure-d_462.html
1722.0 Atmospheric Pressure, Pa (psf)Unit conversion calculation
5.2%Long-term moisture content of tailings, wtailings (%)From Attachment H - Radon Emanation Modeling including with this submittal
0.020 Ratio of Secondary Compression Index to Primary Compression Index, Cα/Cc Estimated from laboratory results presented in MWH (2015b), upper bound average C for sand-slime and slime tailings of 0.02
2.61 Specific gravity of topsoil, Gs-Topsoil From Attachment H - Radon Emanation Modeling including with this submittal
2.62 Specific gravity of rock mulch, Gs-mulch From Attachment H - Radon Emanation Modeling including with this submittal
2.63 Specific gravity of cover soil, Gs-cover From Attachment H - Radon Emanation Modeling including with this submittal
118.0 Maximum dry unit weight of cover soil γcover-max (pcf)Average calculated from laboratory testing results (UWM, 2012)
100.7 Moist unit weight of cover soil at 80% relative compaction, γcover80 (pcf)Calculated
107.0 Moist unit weight of cover soil at 85% relative compaction, γcover85 (pcf)Calculated
119.6 Moist unit weight of cover soil at 95% relative compaction, γcover95 (pcf)Calculated
127.5 Saturated unit weight of cover soil at 80% relative compaction, γcover80-sat (pcf)Calculated
100 Dry unit weight of topsoil layer at 85% relative compaction, γtopsoil5 (pcf)From Attachment H - Radon Emanation Modeling including with this submittal
105 Moist unit weight of topsoil layer at 85% relative compaction, γtopsoil5 (pcf)Calculated
106 Dry unit weight of rock mulch layer at 85% relative compaction, γmulch85 (pcf)From Attachment H - Radon Emanation Modeling including with this submittal
110 Moist unit weight of rock mulch layer at 85% relative compaction, γmulch85 (pcf)From Attachment H - Radon Emanation Modeling including with this submittal
0.74 Void Ratio of cover soil at 80% relative compaction, ecover80 Calculated
0.64 Void Ratio of cover soil at 85% relative compaction, ecover85 Calculated
0.46 Void Ratio of cover soil at 95% relative compaction, ecover95 Calculated
0.61 Void Ratio of topsoil at 85% relative compaction, etopsoil85 Calculated from porosity presented in Attachment H - Radon Emanation Modeling including with this submittal
0.54 Void Ratio of rock mulch at 85% relative compaction, emulch85 Calculated from porosity presented in Attachment H - Radon Emanation Modeling including with this submittal
6.7%Long-term moisture content of cover soil, wcover (%)Estimated based on measured 15bar water content. (UWM, 2012)
5.2%Long-term moisture content of topsoil, wtopsoil (%)From Attachment H - Radon Emanation Modeling including with this submittal
4.0%Long-term moisture content of rock mulch, wrockmulch (%)From Attachment H - Radon Emanation Modeling including with this submittal
0.14 Compression index of cover soil, Cc-cover Calculated from empirical equation for soil types similar to cover material (as presented in Holtz and Kovacs, 1981. Page 341). Cc = 0.30*(e0-0.27)
Specific Gravity, Gs
Unit Weight, γ
Void Ratio, e
Other
COVER SOIL
Settlement_30Aug2015.xls Page 2 of 31
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Settlement Analyses
REFERENCES
Energy Fuels Resources (USA) Inc. (EFRI), 2012. Responses to Interrogatories – Round 1 for Reclamation Plan,
Revision 5.0, March 2012. August 15.
Holtz, R.D. and Kovacs, W.D., 1981. An Introduction to Geotechnical Engineering. Prentice Hall, Inc. New Jersey
Keshian, B., and Rager, R. 1988. Geotechnical Properties of Hydraulically Placed Uranium Mill Tailings, in
Hydraulically Fill Structures, Geotechnical Special Publication No. 21, Eds. Van Zyl, D., and Vick, S., ASCE, August.
MWH Americas, Inc. (MWH), 2015. White Mesa Mill Tailings Data Analysis Report. Prepared for Energy Fuels
Resources (USA) Inc. April.
University of Wisconsin-Madison (UWM), Wisconsin Geotechnics Laboratory, 2012. Compaction and Hydraulic
Properties of Soils from Banding, Utah. Geotechnics Report NO. 12-41 by C.H. Benson and X. Wang. July 24.
Settlement_30Aug2015.xls Page 3 of 31
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Settlement Analyses
5625.87 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl) From cover deisgn grading plan AutoCAD file
From Appendix C - Radon Emanation Modeling (MWH, 2015)
3.50 Thickness of Water Storage/Rooting Zone (ft) From Appendix C - Radon Emanation Modeling (MWH, 2015)
4.00 Thickness of High Compaction Layer (ft) From Appendix C - Radon Emanation Modeling (MWH, 2015)
2.02 Thickness of Random/Platform Fill on on top of existing interim cover (ft) Calculated
1111.60 Additional Stress due to Final Cover Placement, ΔσFC (psf)Calculated
5613.10 Water surface elevation during CPT investigation (ft amsl)From on-site investigation (Tailings Data Analysis Report. MWH, 2015)
5607.7 Water surface elevation at t0 (ft amsl)Minimum of 5' below top of tailings or water surface elevation at time of CPT testing (2013)
5598.51 Water surface elevation at t1 (ft amsl)
5593.51 Water surface elevation at t2 (ft amsl)
2W2
FINAL COVER
0.50
Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after
placement (ft)
PROFILE INFORMATION
Settlement_30Aug2015.xls Page 4 of 31
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Settlement Analyses
Layer 1 5615.85 5614.30 5612.74 3.11 Int. Cover 156.63 313.25 1268.22 1424.85 1268.22 1424.85 0.23 0.00
Layer 2 5612.74 5612.25 5611.76 0.98 Sand-Slime 371.55 429.85 1483.15 1541.44 1483.15 1541.44 0.07 0.00
Layer 3 5611.76 5611.68 5611.59 0.17 Slime 439.46 449.08 1551.06 1560.68 1551.06 1560.68 0.01 0.00
Layer 4 5611.59 5611.43 5611.27 0.32 Sand 468.83 488.59 1580.43 1600.19 1580.43 1600.19 0.01 0.00
Layer 5 5611.27 5611.19 5611.10 0.17 Sand-Slime 498.70 508.81 1610.30 1620.41 1610.30 1620.41 0.01 0.00
Layer 6 5611.10 5610.69 5610.28 0.82 Slime 555.20 601.58 1666.79 1713.18 1666.79 1713.18 0.05 0.00
Layer 7 5610.28 5610.20 5610.12 0.16 Sand-Slime 611.10 620.61 1722.69 1732.21 1722.69 1732.21 0.01 0.00
Layer 8 5610.12 5609.88 5609.63 0.49 Slime 648.33 676.05 1759.93 1787.64 1759.93 1787.64 0.03 0.00
Layer 9 5609.63 5609.38 5609.13 0.50 Sand-Slime 705.79 735.53 1817.39 1847.13 1817.39 1847.13 0.02 0.00
Layer 10 5609.13 5608.56 5607.99 1.14 Slime 800.02 864.50 1911.61 1976.09 1911.61 1976.09 0.05 0.00
Layer 11 5607.99 5607.83 5607.66 0.33 Sand-Slime 884.13 898.77 1995.73 2015.36 1995.73 2015.36 0.01 0.00
Layer 12 5607.66 5607.25 5606.84 0.82 Slime 919.56 940.36 2061.74 2108.12 2061.74 2108.12 0.04 0.00
Layer 13 5606.84 5606.51 5606.18 0.66 Sand-Slime 959.03 977.70 2147.38 2186.64 2147.38 2186.64 0.03 0.00
Layer 14 5606.18 5605.94 5605.69 0.49 Slime 990.13 1002.56 2214.36 2242.07 2214.36 2242.07 0.02 0.00
Layer 15 5605.69 5605.53 5605.36 0.33 Sand-Slime 1011.89 1021.22 2261.70 2281.33 2261.70 2281.33 0.01 0.00
Layer 16 5605.36 5605.20 5605.03 0.33 Slime 1029.59 1037.96 2300.00 2318.67 2300.00 2318.67 0.01 0.00
Layer 17 5605.03 5604.87 5604.70 0.33 Sand-Slime 1047.30 1056.63 2338.30 2357.93 2338.30 2357.93 0.01 0.00
Layer 18 5604.70 5604.46 5604.21 0.49 Slime 1069.06 1081.49 2385.64 2413.36 2385.64 2413.36 0.02 0.00
Layer 19 5604.21 5604.05 5603.88 0.33 Sand-Slime 1090.82 1100.16 2432.99 2452.62 2432.99 2452.62 0.01 0.00
Layer 20 5603.88 5603.39 5602.90 0.98 Slime 1125.01 1149.87 2508.05 2563.48 2508.05 2563.48 0.04 0.00
Layer 21 5602.90 5602.82 5602.74 0.16 Sand-Slime 1154.40 1158.92 2573.00 2582.52 2573.00 2582.52 0.01 0.00
Layer 22 5602.74 5602.33 5601.92 0.82 Slime 1179.72 1200.52 2628.90 2675.28 2628.90 2675.28 0.03 0.00
Layer 23 5601.92 5601.67 5601.42 0.50 Sand-Slime 1214.66 1228.80 2705.03 2734.77 2705.03 2734.77 0.02 0.00
Layer 24 5601.42 5601.34 5601.26 0.16 Slime 1232.86 1236.92 2743.82 2752.87 2743.82 2752.87 0.01 0.00
Layer 25 5601.26 5601.18 5601.10 0.16 Sand-Slime 1241.45 1245.97 2762.39 2771.91 2762.39 2771.91 0.01 0.00
Layer 26 5601.10 5600.69 5600.28 0.82 Slime 1266.77 1287.57 2818.29 2864.67 2818.29 2864.67 0.03 0.00
Layer 27 5600.28 5599.87 5599.46 0.82 Sand-Slime 1310.76 1333.96 2913.45 2962.23 2913.45 2962.23 0.03 0.00
Layer 28 5599.46 5598.72 5597.98 1.48 Slime 1371.50 1409.03 3045.94 3096.58 3045.94 3129.65 0.06 0.00
Layer 29 5597.98 5597.90 5597.82 0.16 Sand-Slime 1413.56 1418.08 3101.11 3105.63 3139.17 3148.69 0.01 0.00
Layer 30 5597.82 5597.49 5597.16 0.66 Slime 1434.82 1451.56 3122.37 3139.11 3186.02 3223.35 0.03 0.00
Layer 31 5597.16 5596.83 5596.50 0.66 Sand-Slime 1470.23 1488.90 3157.78 3176.45 3262.61 3301.88 0.03 0.00
Layer 32 5596.50 5596.34 5596.18 0.32 Slime 1497.02 1505.13 3184.57 3192.68 3319.98 3338.08 0.01 0.00
Layer 33 5596.18 5595.85 5595.52 0.66 Sand-Slime 1523.80 1542.47 3211.35 3230.02 3377.34 3416.60 0.03 0.00
Layer 34 5595.52 5594.52 5593.51 2.01 Sand-Slime 1599.33 1656.18 3286.88 3343.73 3536.16 3530.31 0.08 0.01
1.09
0.01
Notes:
1 From on-site investigation (Tailings Data Analysis Report. MWH, 2015)
2W2
CONSOLIDATION SETTLEMENT
Soil Layer
Elevation at Top of Layer at t0, zi-
top0 (ft amsl) 1
Elevation at
Midpoint of Layer
at t0, zi-mid0 (ft amsl)
Consolidtion of Layer from t1 to t2 due to
Dewatering, δci-t2 (ft)Material Type 1
Effective Stress at
Midpoint of Layer at
t0, σ'i-mid0 (psf)
Effective Stress at Bottom of Layer at t2,
σ'i-bott2 (psf)
Consolidtion of Layer from t0
to t1 due to Final Cover
Placement and Dewatering, δci-
t1 (ft)
Total Consolidtion of Profile at t1, δc-t1 (ft):
Effective Stress at
Bottom of Layer at
t0, σ'i-bott0 (psf)
Effective Stress at
Midpoint of Layer at
t1, σ'i-mid1 (psf)
Effective Stress at
Bottom of Layer at
t1, σ'i-bott1 (psf)
Effective Stress at
Midpoint of Layer at
t2, σ'i-mid2 (psf)
Elevation at
Bottom of Layer at
t0, zi-bott0 (ft amsl) 1
Thickness of
Layer at t0, H (ft)
Total Consolidtion of Profile at t2, δc-t2 (ft):
Settlement_30Aug2015.xls Page 5 of 31
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Settlement Analyses
5626.27 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl) From cover deisgn grading plan AutoCAD file
From Appendix C - Radon Emanation Modeling (MWH, 2015)
3.50 Thickness of Water Storage/Rooting Zone (ft) From Appendix C - Radon Emanation Modeling (MWH, 2015)
4.00 Thickness of High Compaction Layer (ft) From Appendix C - Radon Emanation Modeling (MWH, 2015)
2.55 Thickness of Random/Platform Fill on on top of existing interim cover (ft) Calculated
1164.98 Additional Stress due to Final Cover Placement, ΔσFC (psf)Calculated
5613.80 Water surface elevation during CPT investigation (ft amsl)From on-site investigation (Tailings Data Analysis Report. MWH, 2015)
5607.6 Water surface elevation at t0 (ft amsl)Minimum of 5' below top of tailings or water surface elevation at time of CPT testing (2013)
5597.75 Water surface elevation at t1 (ft amsl)
5592.75 Water surface elevation at t2 (ft amsl)
2W3
FINAL COVER
PROFILE INFORMATION
0.50
Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after
placement (ft)
Settlement_30Aug2015.xls Page 6 of 31
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Settlement Analyses
Layer 1 5615.72 5614.17 5612.61 3.11 Int. Cover 156.63 313.25 1321.61 1478.24 1321.61 1478.24 0.23 0.00
Layer 2 5612.61 5612.37 5612.12 0.49 Sand-Slime 342.40 371.55 1507.38 1536.53 1507.38 1536.53 0.04 0.00
Layer 3 5612.12 5612.04 5611.95 0.17 Slime 381.17 390.78 1546.15 1555.76 1546.15 1555.76 0.01 0.00
Layer 4 5611.95 5611.46 5610.97 0.98 Sand-Slime 449.08 507.37 1614.06 1672.36 1614.06 1672.36 0.07 0.00
Layer 5 5610.97 5610.81 5610.64 0.33 Slime 526.04 544.71 1691.02 1709.69 1691.02 1709.69 0.02 0.00
Layer 6 5610.64 5609.82 5609.00 1.64 Sand-Slime 642.26 739.82 1807.24 1904.80 1807.24 1904.80 0.09 0.00
Layer 7 5609.00 5608.92 5608.83 0.17 Slime 749.43 759.05 1914.42 1924.03 1914.42 1924.03 0.01 0.00
Layer 8 5608.83 5608.59 5608.34 0.49 Sand-Slime 788.20 817.35 1953.18 1982.33 1953.18 1982.33 0.02 0.00
Layer 9 5608.34 5608.26 5608.18 0.16 Slime 826.40 835.45 1991.38 2000.43 1991.38 2000.43 0.01 0.00
Layer 10 5608.18 5608.10 5608.01 0.17 Sand-Slime 845.56 855.67 2010.54 2020.65 2010.54 2020.65 0.01 0.00
Layer 11 5608.01 5607.84 5607.67 0.34 Slime 874.90 894.14 2039.89 2059.12 2039.89 2059.12 0.02 0.00
Layer 12 5607.67 5607.02 5606.37 1.30 Sand-Slime 934.65 971.42 2136.45 2213.78 2136.45 2213.78 0.06 0.00
Layer 13 5606.37 5606.21 5606.05 0.32 Slime 979.54 987.65 2231.88 2249.98 2231.88 2249.98 0.01 0.00
Layer 14 5606.05 5604.98 5603.91 2.14 Sand-Slime 1048.19 1108.72 2377.28 2504.58 2377.28 2504.58 0.09 0.00
Layer 15 5603.91 5603.26 5602.60 1.31 Slime 1141.94 1175.17 2578.68 2652.78 2578.68 2652.78 0.06 0.00
Layer 16 5602.60 5601.62 5600.63 1.97 Sand-Slime 1230.89 1286.62 2769.96 2887.15 2769.96 2887.15 0.08 0.00
Layer 17 5600.63 5600.47 5600.30 0.33 Slime 1294.99 1303.36 2905.82 2924.48 2905.82 2924.48 0.01 0.00
Layer 18 5600.30 5600.14 5599.98 0.32 Sand-Slime 1312.41 1321.46 2943.52 2962.55 2943.52 2962.55 0.01 0.00
Layer 19 5599.98 5599.08 5598.17 1.81 Slime 1367.37 1413.28 3064.93 3167.31 3064.93 3167.31 0.08 0.00
Layer 20 5598.17 5597.85 5597.52 0.65 Sand-Slime 1431.66 1450.05 3205.98 3230.29 3205.98 3244.64 0.03 0.00
Layer 21 5597.52 5597.36 5597.19 0.33 Slime 1458.42 1466.79 3238.66 3247.03 3263.31 3281.98 0.01 0.00
Layer 22 5597.19 5596.54 5595.88 1.31 Sand-Slime 1503.84 1540.90 3284.09 3321.14 3359.90 3437.83 0.05 0.00
Layer 23 5595.88 5595.55 5595.22 0.66 Slime 1557.64 1574.38 3337.88 3354.62 3475.16 3512.49 0.03 0.00
Layer 24 5595.22 5595.06 5594.89 0.33 Sand-Slime 1583.71 1593.04 3363.96 3373.29 3532.12 3551.75 0.01 0.00
Layer 25 5594.89 5594.65 5594.40 0.49 Slime 1605.47 1617.90 3385.72 3398.15 3579.47 3607.19 0.02 0.00
Layer 26 5594.40 5594.24 5594.07 0.33 Sand-Slime 1627.23 1636.57 3407.48 3416.81 3626.82 3646.45 0.01 0.00
Layer 27 5594.07 5593.41 5592.75 1.32 Sand-Slime 1673.91 1711.24 3454.15 3491.49 3724.97 3721.12 0.05 0.00
1.15
0.01
Notes:
1 From on-site investigation (Tailings Data Analysis Report. MWH, 2015)
2W3
CONSOLIDATION SETTLEMENT
Soil Layer
Elevation at Top of Layer at t0, zi-
top0 (ft amsl) 1
Effective Stress at
Midpoint of Layer at
t2, σ'i-mid2 (psf)
Effective Stress at
Bottom of Layer at
t2, σ'i-bott2 (psf)
Consolidtion of Layer from t1 to t2 due to
Dewatering, δci-t2 (ft)
Total Consolidtion of Profile at t1, δc-t1 (ft):
Consolidtion of Layer from t0
to t1 due to Final Cover
Placement and Dewatering, δci-
t1 (ft)
Elevation at
Midpoint of Layer
at t0, zi-mid0 (ft amsl)
Elevation at
Bottom of Layer at
t0, zi-bott0 (ft amsl) 1
Thickness of
Layer at t0, H (ft)
Total Consolidtion of Profile at t2, δc-t2 (ft):
Effective Stress at
Midpoint of Layer at
t1, σ'i-mid1 (psf)
Effective Stress at
Bottom of Layer at
t1, σ'i-bott1 (psf)Material Type 1
Effective Stress at
Midpoint of Layer at
t0, σ'i-mid0 (psf)
Effective Stress at
Bottom of Layer at
t0, σ'i-bott0 (psf)
Settlement_30Aug2015.xls Page 7 of 31
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Settlement Analyses
5626.19 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl) From cover deisgn grading plan AutoCAD file
From Appendix C - Radon Emanation Modeling (MWH, 2015)
3.50 Thickness of Water Storage/Rooting Zone (ft) From Appendix C - Radon Emanation Modeling (MWH, 2015)
4.00 Thickness of High Compaction Layer (ft) From Appendix C - Radon Emanation Modeling (MWH, 2015)
1.95 Thickness of Random/Platform Fill on on top of existing interim cover (ft) Calculated
1104.55 Additional Stress due to Final Cover Placement, ΔσFC (psf)Calculated
5611.20 Water surface elevation during CPT investigation (ft amsl)From on-site investigation (Tailings Data Analysis Report. MWH, 2015)
5608.1 Water surface elevation at t0 (ft amsl)Minimum of 5' below top of tailings or water surface elevation at time of CPT testing (2013)
5593.51 Water surface elevation at t1 (ft amsl)
5588.51 Water surface elevation at t2 (ft amsl)
2W4-C
FINAL COVER
PROFILE INFORMATION
Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after
placement (ft)0.50
Settlement_30Aug2015.xls Page 8 of 31
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Settlement Analyses
Layer 1 5616.24 5614.68 5613.12 3.12 Int. Cover 157.13 314.26 1261.68 1418.81 1261.68 1418.81 0.23 0.00
Layer 2 5613.12 5613.04 5612.96 0.16 Sand 324.14 334.02 1428.69 1438.56 1428.69 1438.56 0.01 0.00
Layer 3 5612.96 5611.32 5609.68 3.28 Sand-Slime 529.13 724.24 1633.68 1828.79 1633.68 1828.79 0.19 0.00
Layer 4 5609.68 5609.60 5609.51 0.17 Slime 733.86 743.48 1838.41 1848.02 1838.41 1848.02 0.01 0.00
Layer 5 5609.51 5608.28 5607.05 2.46 Sand-Slime 889.81 969.38 1994.36 2140.69 1994.36 2140.69 0.10 0.00
Layer 6 5607.05 5606.89 5606.73 0.32 Slime 977.49 985.61 2158.79 2176.89 2158.79 2176.89 0.01 0.00
Layer 7 5606.73 5606.57 5606.40 0.33 Sand-Slime 994.94 1004.28 2196.52 2216.15 2196.52 2216.15 0.01 0.00
Layer 8 5606.40 5606.32 5606.23 0.17 Slime 1008.59 1012.90 2225.77 2235.38 2225.77 2235.38 0.01 0.00
Layer 9 5606.23 5605.41 5604.59 1.64 Sand-Slime 1059.29 1105.68 2332.94 2430.50 2332.94 2430.50 0.07 0.00
Layer 10 5604.59 5604.51 5604.43 0.16 Slime 1109.74 1113.80 2439.55 2448.60 2439.55 2448.60 0.01 0.00
Layer 11 5604.43 5604.27 5604.10 0.33 Sand-Slime 1123.13 1132.46 2468.23 2487.86 2468.23 2487.86 0.01 0.00
Layer 12 5604.10 5603.94 5603.77 0.33 Slime 1140.83 1149.20 2506.52 2525.19 2506.52 2525.19 0.01 0.00
Layer 13 5603.77 5601.89 5600.00 3.77 Sand-Slime 1255.84 1362.48 2749.45 2973.71 2749.45 2973.71 0.16 0.00
Layer 14 5600.00 5599.43 5598.85 1.15 Slime 1391.65 1420.81 3038.76 3103.81 3038.76 3103.81 0.05 0.00
Layer 15 5598.85 5598.44 5598.03 0.82 Sand-Slime 1444.01 1467.20 3152.59 3201.37 3152.59 3201.37 0.03 0.00
Layer 16 5598.03 5597.95 5597.87 0.16 Slime 1471.26 1475.32 3210.42 3219.47 3210.42 3219.47 0.01 0.00
Layer 17 5597.87 5597.63 5597.38 0.49 Sand-Slime 1489.18 1503.04 3248.61 3277.76 3248.61 3277.76 0.02 0.00
Layer 18 5597.38 5597.22 5597.05 0.33 Slime 1511.41 1519.78 3296.43 3315.09 3296.43 3315.09 0.01 0.00
Layer 19 5597.05 5596.64 5596.23 0.82 Sand-Slime 1542.97 1566.17 3363.87 3412.65 3363.87 3412.65 0.03 0.00
Layer 20 5596.23 5595.82 5595.41 0.82 Slime 1586.97 1607.76 3459.03 3505.41 3459.03 3505.41 0.03 0.00
Layer 21 5595.41 5595.08 5594.75 0.66 Sand-Slime 1626.43 1645.10 3544.68 3583.94 3544.68 3583.94 0.03 0.00
Layer 22 5594.75 5594.67 5594.59 0.16 Slime 1649.16 1653.22 3592.99 3602.04 3592.99 3602.04 0.01 0.00
Layer 23 5594.59 5594.43 5594.26 0.33 Sand-Slime 1662.55 1671.89 3621.67 3641.30 3621.67 3641.30 0.01 0.00
Layer 24 5594.26 5594.10 5593.93 0.33 Slime 1680.26 1688.63 3659.96 3678.63 3659.96 3678.63 0.01 0.00
Layer 25 5593.93 5591.80 5589.67 4.26 Sand-Slime 1809.12 1929.62 3825.33 3945.83 3932.04 4185.45 0.17 0.00
Layer 26 5589.67 5589.09 5588.51 1.16 Sand-Slime 1962.43 1995.24 3978.64 4011.45 4254.45 4251.07 0.04 0.00
1.29
0.01
Notes:
1 From on-site investigation (Tailings Data Analysis Report. MWH, 2015)
2W4-C
CONSOLIDATION SETTLEMENT
Soil Layer
Elevation at Top of Layer at t0, zi-
top0 (ft amsl) 1
Elevation at
Midpoint of Layer
at t0, zi-mid0 (ft amsl)
Total Consolidtion of Profile at t1, δc-t1 (ft):
Total Consolidtion of Profile at t2, δc-t2 (ft):
Effective Stress at
Midpoint of Layer at
t2, σ'i-mid2 (psf)
Effective Stress at
Bottom of Layer at
t2, σ'i-bott2 (psf)
Effective Stress at
Midpoint of Layer at
t1, σ'i-mid1 (psf)
Effective Stress at
Bottom of Layer at
t1, σ'i-bott1 (psf)Material Type 1
Consolidtion of Layer from t1 to t2 due to
Dewatering, δci-t2 (ft)
Effective Stress at
Midpoint of Layer at
t0, σ'i-mid0 (psf)
Elevation at
Bottom of Layer at
t0, zi-bott0 (ft amsl) 1
Thickness of
Layer at t0, H (ft)
Effective Stress at
Bottom of Layer at
t0, σ'i-bott0 (psf)
Consolidtion of Layer from t0
to t1 due to Final Cover
Placement and Dewatering, δci-
t1 (ft)
Settlement_30Aug2015.xls Page 9 of 31
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Settlement Analyses
5626.29 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl) From cover deisgn grading plan AutoCAD file
From Appendix C - Radon Emanation Modeling (MWH, 2015)
3.50 Thickness of Water Storage/Rooting Zone (ft) From Appendix C - Radon Emanation Modeling (MWH, 2015)
4.00 Thickness of High Compaction Layer (ft) From Appendix C - Radon Emanation Modeling (MWH, 2015)
2.43 Thickness of Random/Platform Fill on on top of existing interim cover (ft) Calculated
1152.89 Additional Stress due to Final Cover Placement, ΔσFC (psf)Calculated
5604.20 Water surface elevation during CPT investigation (ft amsl)From on-site investigation (Tailings Data Analysis Report. MWH, 2015)
5604.2 Water surface elevation at t0 (ft amsl)Minimum of 5' below top of tailings or water surface elevation at time of CPT testing (2013).
5589.01 Water surface elevation at t1 (ft amsl)
5584.01 Water surface elevation at t2 (ft amsl)
2W5-C
FINAL COVER
PROFILE INFORMATION
0.50
Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after
placement (ft)
Settlement_30Aug2015.xls Page 10 of 31
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Settlement Analyses
Layer 1 5615.86 5614.31 5612.75 3.11 Int. Cover 156.63 313.25 1309.52 1466.15 1309.52 1466.15 0.23
Layer 2 5612.75 5612.59 5612.42 0.33 Sand-Slime 332.88 352.51 1485.78 1505.41 1485.78 1505.41 0.03
Layer 3 5612.42 5612.09 5611.76 0.66 Sand 393.26 434.01 1546.16 1586.90 1546.16 1586.90 0.03
Layer 4 5611.76 5611.60 5611.44 0.32 Sand-Slime 453.04 472.08 1605.94 1624.97 1605.94 1624.97 0.02
Layer 5 5611.44 5611.11 5610.78 0.66 Sand 512.82 553.57 1665.72 1706.47 1665.72 1706.47 0.02
Layer 6 5610.78 5609.96 5609.14 1.64 Sand-Slime 651.13 748.68 1804.02 1901.58 1804.02 1901.58 0.09
Layer 7 5609.14 5608.90 5608.65 0.49 Sand 778.94 809.19 1931.83 1962.08 1931.83 1962.08 0.01
Layer 8 5608.65 5604.88 5601.10 7.55 Sand-Slime 1258.30 1513.98 2411.20 2860.32 2411.20 2860.32 0.26
Layer 9 5601.10 5601.02 5600.94 0.16 Sand 1518.87 1523.75 2870.19 2880.07 2870.19 2880.07 0.00
Layer 10 5600.94 5600.12 5599.30 1.64 Sand-Slime 1570.14 1616.53 2977.63 3075.18 2977.63 3075.18 0.06
Layer 11 5599.30 5599.14 5598.97 0.33 Slime 1624.90 1633.27 3093.85 3112.52 3093.85 3112.52 0.01
Layer 12 5598.97 5596.92 5594.87 4.10 Sand-Slime 1749.24 1865.21 3356.41 3600.30 3356.41 3600.30 0.14
Layer 13 5594.87 5594.46 5594.05 0.82 Slime 1886.01 1906.81 3646.68 3693.06 3646.68 3693.06 0.03
Layer 14 5594.05 5593.81 5593.56 0.49 Sand-Slime 1920.67 1934.53 3722.21 3751.36 3722.21 3751.36 0.02
Layer 15 5593.56 5593.48 5593.39 0.17 Slime 1938.84 1943.15 3760.98 3770.59 3760.98 3770.59 0.01
Layer 16 5593.39 5592.57 5591.75 1.64 Sand-Slime 1989.54 2035.93 3868.15 3965.70 3868.15 3965.70 0.06
Layer 17 5591.75 5591.59 5591.42 0.33 Slime 2044.30 2052.67 3984.37 4003.04 3984.37 4003.04 0.01
Layer 18 5591.42 5589.46 5587.49 3.93 Sand-Slime 2163.83 2275.00 4236.82 4375.75 4236.82 4470.59 0.14
Layer 19 5587.49 5587.33 5587.16 0.33 Slime 2283.37 2291.74 4384.12 4392.49 4489.26 4507.93 0.01
Layer 20 5587.16 5586.75 5586.34 0.82 Sand 2316.78 2341.82 4417.53 4442.57 4558.55 4609.17 0.02
Layer 21 5586.34 5586.18 5586.01 0.33 Sand-Slime 2351.15 2360.49 4451.90 4461.24 4628.81 4648.44 0.01
Layer 22 5586.01 5585.85 5585.68 0.33 Sand 2370.56 2380.64 4471.31 4481.39 4668.81 4689.18 0.01
Layer 23 5585.68 5584.85 5584.01 1.67 Sand-Slime 2427.88 2475.11 4528.63 4575.86 4788.52 4783.66 0.05
1.26
0.01
Notes:
1 From on-site investigation (Tailings Data Analysis Report. MWH, 2015)
2W5-C
CONSOLIDATION SETTLEMENT
Material Type 1Soil Layer
Elevation at Top
of Layer at t0, zi-
top0 (ft amsl) 1
Elevation at
Midpoint of Layer
at t0, zi-mid0 (ft amsl)
Total Consolidtion of Profile at t1, δc-t1 (ft):
Consolidtion of Layer from t0
to t1 due to Final Cover
Placement and Dewatering, δci-
t1 (ft)
Total Consolidtion of Profile at t2, δc-t2 (ft):
Effective Stress at
Midpoint of Layer
at t2, σ'i-mid2 (psf)
Effective Stress at
Bottom of Layer at
t2, σ'i-bott2 (psf)
Effective Stress at
Midpoint of Layer
at t1, σ'i-mid1 (psf)
Effective Stress at
Bottom of Layer at
t1, σ'i-bott1 (psf)
Effective Stress at
Bottom of Layer at
t0, σ'i-bott0 (psf)
Effective Stress at
Midpoint of Layer
at t0, σ'i-mid0 (psf)
Elevation at
Bottom of Layer
at t0, zi-bott0 (ft
amsl) 1
Thickness of
Layer at t0, H (ft)
Settlement_30Aug2015.xls Page 11 of 31
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Settlement Analyses
5625.41 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl) From cover deisgn grading plan AutoCAD file
From Appendix C - Radon Emanation Modeling (MWH, 2015)
3.50 Thickness of Water Storage/Rooting Zone (ft) From Appendix C - Radon Emanation Modeling (MWH, 2015)
4.00 Thickness of High Compaction Layer (ft) From Appendix C - Radon Emanation Modeling (MWH, 2015)
1.56 Thickness of Random/Platform Fill on on top of existing interim cover (ft) Calculated
1065.26 Additional Stress due to Final Cover Placement, ΔσFC (psf)Calculated
5604.40 Water surface elevation during CPT investigation (ft amsl)From on-site investigation (Tailings Data Analysis Report. MWH, 2015)
5604.4 Water surface elevation at t0 (ft amsl)Minimum of 5' below top of tailings or water surface elevation at time of CPT testing (2013)
5588.59 Water surface elevation at t1 (ft amsl)
5583.59 Water surface elevation at t2 (ft amsl)
2W6-S
FINAL COVER
PROFILE INFORMATION
0.50
Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after
placement (ft)
Settlement_30Aug2015.xls Page 12 of 31
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Settlement Analyses
Layer 1 5615.85 5614.29 5612.73 3.12 Int. Cover 157.13 314.26 1222.39 1379.53 1222.39 1379.53 0.22 0.00
Layer 2 5612.73 5612.49 5612.24 0.49 Sand-Slime 343.41 372.56 1408.67 1437.82 1408.67 1437.82 0.04 0.00
Layer 3 5612.24 5612.16 5612.07 0.17 Sand 383.05 393.55 1448.32 1458.81 1448.32 1458.81 0.01 0.00
Layer 4 5612.07 5611.66 5611.25 0.82 Sand-Slime 442.33 491.10 1507.59 1556.37 1507.59 1556.37 0.05 0.00
Layer 5 5611.25 5611.01 5610.76 0.49 Sand 521.36 551.61 1586.62 1616.87 1586.62 1616.87 0.02 0.00
Layer 6 5610.76 5609.78 5608.79 1.97 Sand-Slime 668.79 785.98 1734.06 1851.24 1734.06 1851.24 0.10 0.00
Layer 7 5608.79 5608.63 5608.46 0.33 Slime 804.65 823.31 1869.91 1888.58 1869.91 1888.58 0.01 0.00
Layer 8 5608.46 5608.30 5608.14 0.32 Sand 843.07 862.82 1908.33 1928.09 1908.33 1928.09 0.01 0.00
Layer 9 5608.14 5607.40 5606.66 1.48 Sand-Slime 950.86 1038.90 2016.13 2104.17 2016.13 2104.17 0.06 0.00
Layer 10 5606.66 5606.50 5606.33 0.33 Slime 1057.57 1076.23 2122.83 2141.50 2122.83 2141.50 0.01 0.00
Layer 11 5606.33 5606.09 5605.84 0.49 Sand-Slime 1105.38 1134.53 2170.65 2199.79 2170.65 2199.79 0.02 0.00
Layer 12 5605.84 5605.51 5605.18 0.66 Slime 1171.86 1209.19 2237.13 2274.46 2237.13 2274.46 0.02 0.00
Layer 13 5605.18 5604.86 5604.53 0.65 Sand-Slime 1247.86 1286.53 2313.12 2351.79 2313.12 2351.79 0.02 0.00
Layer 14 5604.53 5604.28 5604.03 0.50 Slime 1307.32 1320.00 2380.07 2408.35 2380.07 2408.35 0.02 0.00
Layer 15 5604.03 5603.95 5603.87 0.16 Sand-Slime 1324.53 1329.05 2417.87 2427.39 2417.87 2427.39 0.01 0.00
Layer 16 5603.87 5602.64 5601.41 2.46 Slime 1391.45 1453.84 2566.53 2705.68 2566.53 2705.68 0.08 0.00
Layer 17 5601.41 5601.17 5600.92 0.49 Sand-Slime 1467.70 1481.56 2734.83 2763.98 2734.83 2763.98 0.02 0.00
Layer 18 5600.92 5600.84 5600.75 0.17 Slime 1485.87 1490.19 2773.59 2783.21 2773.59 2783.21 0.01 0.00
Layer 19 5600.75 5600.67 5600.59 0.16 Sand-Slime 1494.71 1499.24 2792.73 2802.24 2792.73 2802.24 0.01 0.00
Layer 20 5600.59 5600.18 5599.77 0.82 Slime 1520.03 1540.83 2848.63 2895.01 2848.63 2895.01 0.03 0.00
Layer 21 5599.77 5599.20 5598.62 1.15 Sand-Slime 1573.36 1605.89 2963.42 3031.83 2963.42 3031.83 0.04 0.00
Layer 22 5598.62 5598.21 5597.80 0.82 Slime 1626.69 1647.49 3078.21 3124.59 3078.21 3124.59 0.03 0.00
Layer 23 5597.80 5596.98 5596.16 1.64 Sand-Slime 1693.88 1740.26 3222.15 3319.70 3222.15 3319.70 0.06 0.00
Layer 24 5596.16 5595.92 5595.67 0.49 Slime 1752.69 1765.12 3347.42 3375.14 3347.42 3375.14 0.02 0.00
Layer 25 5595.67 5595.51 5595.34 0.33 Sand-Slime 1774.45 1783.79 3394.77 3414.40 3394.77 3414.40 0.01 0.00
Layer 26 5595.34 5595.26 5595.18 0.16 Slime 1787.85 1791.90 3423.45 3432.50 3423.45 3432.50 0.01 0.00
Layer 27 5595.18 5592.72 5590.26 4.92 Sand-Slime 1931.07 2070.24 3725.17 4017.84 3725.17 4017.84 0.17 0.00
Layer 28 5590.26 5590.18 5590.09 0.17 Slime 2074.55 2078.86 4027.45 4037.07 4027.45 4037.07 0.01 0.00
Layer 29 5590.09 5588.62 5587.14 2.95 Sand-Slime 2162.30 2245.75 4212.55 4297.55 4212.55 4388.03 0.10 0.00
Layer 30 5587.14 5586.90 5586.65 0.49 Sand 2260.71 2275.67 4312.52 4327.48 4418.28 4448.54 0.01 0.00
Layer 31 5586.65 5585.12 5583.59 3.06 Sand-Slime 2362.23 2448.78 4414.03 4500.59 4630.56 4621.64 0.10 0.01
1.29
0.01
Notes:
1 From on-site investigation (Tailings Data Analysis Report. MWH, 2015)
2W6-S
CONSOLIDATION SETTLEMENT
Soil Layer
Elevation at Top of Layer at t0, zi-
top0 (ft amsl) 1
Effective Stress at
Midpoint of Layer at
t2, σ'i-mid2 (psf)
Effective Stress at
Bottom of Layer at
t2, σ'i-bott2 (psf)
Consolidtion of Layer from t1 to t2 due to
Dewatering, δci-t2 (ft)
Total Consolidtion of Profile at t2, δc-t2 (ft):
Total Consolidtion of Profile at t1, δc-t1 (ft):
Effective Stress at
Midpoint of Layer at
t1, σ'i-mid1 (psf)
Effective Stress at
Bottom of Layer at
t1, σ'i-bott1 (psf)Material Type 1
Effective Stress at
Midpoint of Layer at
t0, σ'i-mid0 (psf)
Consolidtion of Layer from t0
to t1 due to Final Cover
Placement and Dewatering, δci-
t1 (ft)
Effective Stress at
Bottom of Layer at
t0, σ'i-bott0 (psf)
Elevation at
Midpoint of Layer
at t0, zi-mid0 (ft amsl)
Elevation at
Bottom of Layer at
t0, zi-bott0 (ft amsl) 1
Thickness of
Layer at t0, H (ft)
Settlement_30Aug2015.xls Page 13 of 31
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Settlement Analyses
5626.65 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl) From cover deisgn grading plan AutoCAD file
From Appendix C - Radon Emanation Modeling (MWH, 2015)
3.50 Thickness of Water Storage/Rooting Zone (ft) From Appendix C - Radon Emanation Modeling (MWH, 2015)
4.00 Thickness of High Compaction Layer (ft) From Appendix C - Radon Emanation Modeling (MWH, 2015)
-0.95 Thickness of Random/Platform Fill on on top of existing interim cover (ft) Calculated
812.44 Additional Stress due to Final Cover Placement, ΔσFC (psf)Calculated
5613.10 Water surface elevation during CPT investigation (ft amsl)From on-site investigation (Tailings Data Analysis Report. MWH, 2015)
5611.5 Water surface elevation at t0 (ft amsl)Minimum of 5' below top of tailings or water surface elevation at time of CPT testing (2013)
5595.40 Water surface elevation at t1 (ft amsl)
5590.40 Water surface elevation at t2 (ft amsl)
2W7-C
FINAL COVER
PROFILE INFORMATION
0.50
Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after
placement (ft)
Settlement_30Aug2015.xls Page 14 of 31
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Settlement Analyses
Layer 1 5619.60 5618.04 5616.48 3.12 Int. Cover 157.13 314.26 969.58 1126.71 969.58 1126.71 0.20 0.00
Layer 2 5616.48 5615.17 5613.86 2.62 Sand-Slime 470.11 625.97 1282.56 1438.41 1282.56 1438.41 0.14 0.00
Layer 3 5613.86 5613.78 5613.69 0.17 Slime 635.58 645.20 1448.03 1457.64 1448.03 1457.64 0.01 0.00
Layer 4 5613.69 5612.79 5611.89 1.80 Sand-Slime 752.27 859.35 1564.72 1671.79 1564.72 1671.79 0.07 0.00
Layer 5 5611.89 5611.81 5611.72 0.17 Slime 868.96 878.58 1681.41 1691.02 1681.41 1691.02 0.01 0.00
Layer 6 5611.72 5610.99 5610.25 1.47 Sand-Slime 935.13 976.71 1778.47 1865.91 1778.47 1865.91 0.05 0.00
Layer 7 5610.25 5610.17 5610.08 0.17 Slime 981.03 985.34 1875.53 1885.14 1875.53 1885.14 0.01 0.00
Layer 8 5610.08 5610.00 5609.92 0.16 Sand-Slime 989.86 994.39 1894.66 1904.18 1894.66 1904.18 0.01 0.00
Layer 9 5609.92 5609.84 5609.75 0.17 Slime 998.70 1003.01 1913.79 1923.41 1913.79 1923.41 0.01 0.00
Layer 10 5609.75 5606.15 5602.54 7.21 Sand-Slime 1206.95 1410.89 2352.30 2781.19 2352.30 2781.19 0.25 0.00
Layer 11 5602.54 5602.21 5601.88 0.66 Slime 1427.63 1444.37 2818.53 2855.86 2818.53 2855.86 0.02 0.00
Layer 12 5601.88 5601.80 5601.72 0.16 Sand-Slime 1448.90 1453.42 2865.38 2874.89 2865.38 2874.89 0.01 0.00
Layer 13 5601.72 5601.56 5601.39 0.33 Slime 1461.79 1470.16 2893.56 2912.23 2893.56 2912.23 0.01 0.00
Layer 14 5601.39 5600.74 5600.08 1.31 Sand-Slime 1507.22 1544.27 2990.15 3068.08 2990.15 3068.08 0.05 0.00
Layer 15 5600.08 5600.00 5599.91 0.17 Slime 1548.58 1552.90 3077.69 3087.31 3077.69 3087.31 0.01 0.00
Layer 16 5599.91 5599.83 5599.75 0.16 Sand 1557.78 1562.67 3097.19 3107.07 3097.19 3107.07 0.00 0.00
Layer 17 5599.75 5599.67 5599.58 0.17 Sand-Slime 1567.48 1572.29 3117.18 3127.29 3117.18 3127.29 0.01 0.00
Layer 18 5599.58 5599.26 5598.93 0.65 Slime 1588.77 1605.26 3164.06 3200.82 3164.06 3200.82 0.02 0.00
Layer 19 5598.93 5598.52 5598.11 0.82 Sand-Slime 1628.45 1651.65 3249.60 3298.38 3249.60 3298.38 0.03 0.00
Layer 20 5598.11 5597.62 5597.12 0.99 Slime 1676.76 1701.87 3354.38 3410.38 3354.38 3410.38 0.04 0.00
Layer 21 5597.12 5596.96 5596.80 0.32 Sand-Slime 1710.92 1719.97 3429.41 3448.45 3429.41 3448.45 0.01 0.00
Layer 22 5596.80 5596.72 5596.63 0.17 Slime 1724.28 1728.59 3458.06 3467.68 3458.06 3467.68 0.01 0.00
Layer 23 5596.63 5596.39 5596.14 0.49 Sand-Slime 1742.45 1756.31 3496.83 3525.97 3496.83 3525.97 0.02 0.00
Layer 24 5596.14 5596.06 5595.98 0.16 Slime 1760.37 1764.43 3535.02 3544.07 3535.02 3544.07 0.01 0.00
Layer 25 5595.98 5595.57 5595.16 0.82 Sand-Slime 1787.62 1810.82 3592.85 3626.66 3592.85 3641.63 0.03 0.00
Layer 26 5595.16 5594.83 5594.50 0.66 Slime 1827.56 1844.30 3643.40 3660.14 3678.96 3716.30 0.02 0.00
Layer 27 5594.50 5594.42 5594.34 0.16 Sand-Slime 1848.82 1853.35 3664.66 3669.19 3725.81 3735.33 0.01 0.00
Layer 28 5594.34 5594.09 5593.84 0.50 Slime 1866.03 1878.71 3681.87 3694.55 3763.61 3791.89 0.02 0.00
Layer 29 5593.84 5593.60 5593.35 0.49 Sand-Slime 1892.57 1906.43 3708.41 3722.27 3821.04 3850.19 0.02 0.00
Layer 30 5593.35 5593.27 5593.19 0.16 Slime 1910.49 1914.55 3726.33 3730.39 3859.24 3868.29 0.01 0.00
Layer 31 5593.19 5592.62 5592.04 1.15 Sand-Slime 1947.08 1979.61 3762.92 3795.44 3936.70 4005.11 0.04 0.00
Layer 32 5592.04 5591.80 5591.55 0.49 Slime 1992.04 2004.46 3807.87 3820.30 4032.82 4060.54 0.02 0.00
Layer 33 5591.55 5590.98 5590.40 1.15 Sand-Slime 2036.99 2069.52 3852.83 3885.36 4128.95 4125.60 0.04 0.00
1.17
0.01
Notes:
1 From on-site investigation (Tailings Data Analysis Report. MWH, 2015)
2W7-C
CONSOLIDATION SETTLEMENT
Soil Layer
Elevation at Top of Layer at t0, zi-
top0 (ft amsl) 1
Effective Stress at
Midpoint of Layer at
t2, σ'i-mid2 (psf)
Effective Stress at
Bottom of Layer at
t2, σ'i-bott2 (psf)
Consolidtion of Layer from t1 to t2 due to
Dewatering, δci-t2 (ft)
Total Consolidtion of Profile at t1, δc-t1 (ft):
Consolidtion of Layer from t0
to t1 due to Final Cover
Placement and Dewatering, δci-
t1 (ft)
Elevation at
Midpoint of Layer
at t0, zi-mid0 (ft amsl)
Elevation at
Bottom of Layer at
t0, zi-bott0 (ft amsl) 1
Thickness of
Layer at t0, H (ft)
Total Consolidtion of Profile at t2, δc-t2 (ft):
Effective Stress at
Midpoint of Layer at
t1, σ'i-mid1 (psf)
Effective Stress at
Bottom of Layer at
t1, σ'i-bott1 (psf)Material Type 1
Effective Stress at
Midpoint of Layer at
t0, σ'i-mid0 (psf)
Effective Stress at
Bottom of Layer at
t0, σ'i-bott0 (psf)
Settlement_30Aug2015.xls Page 15 of 31
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Settlement Analyses
5630.46 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl) From cover deisgn grading plan AutoCAD file
From Appendix C - Radon Emanation Modeling (MWH, 2015)
3.50 Thickness of Water Storage/Rooting Zone (ft) From Appendix C - Radon Emanation Modeling (MWH, 2015)
4.00 Thickness of High Compaction Layer (ft) From Appendix C - Radon Emanation Modeling (MWH, 2015)
2.51 Thickness of Random/Platform Fill on on top of existing interim cover (ft) Calculated
1160.95 Additional Stress due to Final Cover Placement, ΔσFC (psf)Calculated
5610.80 Water surface elevation during CPT investigation (ft amsl)From on-site investigation (Tailings Data Analysis Report. MWH, 2015)
5610.8 Water surface elevation at t0 (ft amsl)Minimum of 5' below top of tailings or water surface elevation at time of CPT testing (2013)
5595.46 Water surface elevation at t1 (ft amsl)
5590.46 Water surface elevation at t2 (ft amsl)
2E1
FINAL COVER
PROFILE INFORMATION
0.50
Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after
placement (ft)
Settlement_30Aug2015.xls Page 16 of 31
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Settlement Analyses
Layer 1 5619.95 5618.39 5616.83 3.12 Int. Cover 157.13 314.26 1318.08 1475.21 1318.08 1475.21 0.23 0.00
Layer 2 5616.83 5616.50 5616.17 0.66 Sand 355.01 395.75 1515.96 1556.71 1515.96 1556.71 0.03 0.00
Layer 3 5616.17 5615.93 5615.68 0.49 Sand-Slime 424.90 454.05 1585.85 1615.00 1585.85 1615.00 0.03 0.00
Layer 4 5615.68 5615.52 5615.35 0.33 Slime 472.72 491.38 1633.67 1652.33 1633.67 1652.33 0.02 0.00
Layer 5 5615.35 5615.19 5615.02 0.33 Sand-Slime 511.01 530.64 1671.96 1691.60 1671.96 1691.60 0.02 0.00
Layer 6 5615.02 5614.61 5614.20 0.82 Sand 581.27 631.89 1742.22 1792.84 1742.22 1792.84 0.03 0.00
Layer 7 5614.20 5613.79 5613.38 0.82 Sand-Slime 680.67 729.45 1841.62 1890.40 1841.62 1890.40 0.04 0.00
Layer 8 5613.38 5613.22 5613.06 0.32 Sand 749.20 768.96 1910.16 1929.91 1910.16 1929.91 0.01 0.00
Layer 9 5613.06 5610.44 5607.81 5.25 Sand-Slime 1058.48 1206.98 2242.21 2554.51 2242.21 2554.51 0.21 0.00
Layer 10 5607.81 5607.73 5607.64 0.17 Slime 1211.30 1215.61 2564.13 2573.74 2564.13 2573.74 0.01 0.00
Layer 11 5607.64 5607.56 5607.48 0.16 Sand-Slime 1220.13 1224.66 2583.26 2592.78 2583.26 2592.78 0.01 0.00
Layer 12 5607.48 5607.40 5607.31 0.17 Slime 1228.97 1233.28 2602.40 2612.01 2602.40 2612.01 0.01 0.00
Layer 13 5607.31 5606.58 5605.84 1.47 Sand-Slime 1274.86 1316.44 2699.45 2786.90 2699.45 2786.90 0.06 0.00
Layer 14 5605.84 5605.76 5605.67 0.17 Slime 1320.75 1325.07 2796.51 2806.13 2796.51 2806.13 0.01 0.00
Layer 15 5605.67 5605.51 5605.35 0.32 Sand-Slime 1334.12 1343.17 2825.17 2844.20 2825.17 2844.20 0.01 0.00
Layer 16 5605.35 5605.27 5605.18 0.17 Slime 1347.48 1351.79 2853.82 2863.43 2853.82 2863.43 0.01 0.00
Layer 17 5605.18 5601.49 5597.80 7.38 Sand-Slime 1560.54 1769.29 3302.44 3741.44 3302.44 3741.44 0.29 0.00
Layer 18 5597.80 5597.64 5597.47 0.33 Slime 1777.66 1786.03 3760.11 3778.77 3760.11 3778.77 0.01 0.00
Layer 19 5597.47 5595.83 5594.19 3.28 Sand-Slime 1878.81 1971.58 3973.89 4089.75 3973.89 4169.00 0.13 0.00
Layer 20 5594.19 5594.03 5593.86 0.33 Slime 1979.95 1988.32 4098.12 4106.49 4187.67 4206.33 0.01 0.00
Layer 21 5593.86 5593.70 5593.54 0.32 Sand-Slime 1997.38 2006.43 4115.54 4124.60 4225.37 4244.40 0.01 0.00
Layer 22 5593.54 5593.38 5593.21 0.33 Slime 2014.80 2023.17 4132.97 4141.34 4263.07 4281.74 0.01 0.00
Layer 23 5593.21 5592.55 5591.89 1.32 Sand-Slime 2060.50 2097.84 4178.67 4216.01 4360.26 4438.78 0.05 0.00
Layer 24 5591.89 5591.18 5590.46 1.43 Sand-Slime 2138.29 2178.74 4256.46 4296.91 4523.84 4519.67 0.05 0.00
1.30
0.01
Notes:
1 From on-site investigation (Tailings Data Analysis Report. MWH, 2015)
2E1
CONSOLIDATION SETTLEMENT
Soil Layer
Elevation at Top of Layer at t0, zi-
top0 (ft amsl) 1
Effective Stress at
Midpoint of Layer at
t2, σ'i-mid2 (psf)
Effective Stress at
Bottom of Layer at
t2, σ'i-bott2 (psf)
Consolidtion of Layer from t1 to t2 due to
Dewatering, δci-t2 (ft)
Total Consolidtion of Profile at t1, δc-t1 (ft):
Consolidtion of Layer from t0
to t1 due to Final Cover
Placement and Dewatering, δci-
t1 (ft)
Elevation at
Midpoint of Layer
at t0, zi-mid0 (ft amsl)
Elevation at
Bottom of Layer at
t0, zi-bott0 (ft amsl) 1
Thickness of
Layer at t0, H (ft)
Total Consolidtion of Profile at t2, δc-t2 (ft):
Effective Stress at
Midpoint of Layer at
t1, σ'i-mid1 (psf)
Effective Stress at
Bottom of Layer at
t1, σ'i-bott1 (psf)Material Type 1
Effective Stress at
Midpoint of Layer at
t0, σ'i-mid0 (psf)
Effective Stress at
Bottom of Layer at
t0, σ'i-bott0 (psf)
Settlement_30Aug2015.xls Page 17 of 31
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Settlement Analyses
5620.47 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl) From cover deisgn grading plan AutoCAD file
From Appendix C - Radon Emanation Modeling (MWH, 2015)
3.50 Thickness of Water Storage/Rooting Zone (ft) From Appendix C - Radon Emanation Modeling (MWH, 2015)
3.50 Thickness of High Compaction Layer (ft) From Appendix C - Radon Emanation Modeling (MWH, 2015)
0.41 Thickness of Random/Platform Fill on on top of existing interim cover (ft) Calculated
887.10 Additional Stress due to Final Cover Placement, ΔσFC (psf)Calculated
5608.00 Water surface elevation during CPT investigation (ft amsl)From on-site investigation (Tailings Data Analysis Report. MWH, 2015)
5604.4 Water surface elevation at t0 (ft amsl)Minimum of 5' below top of tailings or water surface elevation at time of CPT testing (2013)
5595.59 Water surface elevation at t1 (ft amsl)
5590.59 Water surface elevation at t2 (ft amsl)
PROFILE INFORMATION
0.50
3-1S
Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after
placement (ft)
FINAL COVER
Settlement_30Aug2015.xls Page 18 of 31
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Settlement Analyses
Layer 1 5612.56 5611.00 5609.44 3.12 Int. Cover 157.13 314.26 1044.24 1201.37 1044.24 1201.37 0.21 0.00
Layer 2 5609.44 5608.71 5607.97 1.47 Slime 397.41 480.56 1284.51 1367.66 1284.51 1367.66 0.09 0.00
Layer 3 5607.97 5607.89 5607.80 0.17 Sand-Slime 490.67 500.78 1377.78 1387.89 1377.78 1387.89 0.01 0.00
Layer 4 5607.80 5606.49 5605.18 2.62 Sand 662.53 824.29 1549.64 1711.39 1549.64 1711.39 0.07 0.00
Layer 5 5605.18 5604.93 5604.68 0.50 Sand-Slime 854.03 883.77 1741.13 1770.88 1741.13 1770.88 0.02 0.00
Layer 6 5604.68 5604.44 5604.19 0.49 Sand 913.71 928.67 1801.13 1831.38 1801.13 1831.38 0.01 0.00
Layer 7 5604.19 5603.78 5603.37 0.82 Sand-Slime 951.87 975.06 1880.16 1928.94 1880.16 1928.94 0.03 0.00
Layer 8 5603.37 5603.13 5602.88 0.49 Sand 990.03 1004.99 1959.19 1989.44 1959.19 1989.44 0.01 0.00
Layer 9 5602.88 5602.72 5602.55 0.33 Sand-Slime 1014.32 1023.66 2009.07 2028.70 2009.07 2028.70 0.01 0.00
Layer 10 5602.55 5602.47 5602.39 0.16 Slime 1027.72 1031.77 2037.75 2046.80 2037.75 2046.80 0.01 0.00
Layer 11 5602.39 5601.24 5600.09 2.30 Sand-Slime 1096.83 1161.89 2183.62 2320.43 2183.62 2320.43 0.08 0.00
Layer 12 5600.09 5600.01 5599.93 0.16 Sand 1166.77 1171.66 2330.31 2340.19 2330.31 2340.19 0.00 0.00
Layer 13 5599.93 5597.96 5595.99 3.94 Sand-Slime 1283.11 1394.55 2574.56 2808.94 2574.56 2808.94 0.14 0.00
Layer 14 5595.99 5595.91 5595.83 0.16 Slime 1398.61 1402.67 2817.99 2827.04 2817.99 2827.04 0.01 0.00
Layer 15 5595.83 5595.26 5594.68 1.15 Sand-Slime 1435.20 1467.72 2874.54 2907.07 2895.44 2963.85 0.04 0.00
Layer 16 5594.68 5592.64 5590.59 4.09 Sand-Slime 1583.41 1699.10 3022.76 3138.45 3207.15 3195.23 0.14 0.01
0.88
0.01
Notes:
1 From on-site investigation (Tailings Data Analysis Report. MWH, 2015)
Effective Stress at
Midpoint of Layer at
t0, σ'i-mid0 (psf)
Effective Stress at
Bottom of Layer at
t0, σ'i-bott0 (psf)
Elevation at
Midpoint of Layer
at t0, zi-mid0 (ft amsl)
Elevation at
Bottom of Layer at
t0, zi-bott0 (ft amsl) 1
Thickness of
Layer at t0, H (ft)
3-1S
CONSOLIDATION SETTLEMENT
Soil Layer
Elevation at Top of Layer at t0, zi-
top0 (ft amsl) 1
Effective Stress at
Midpoint of Layer at
t2, σ'i-mid2 (psf)
Effective Stress at
Bottom of Layer at
t2, σ'i-bott2 (psf)
Consolidtion of Layer from t1 to t2 due to
Dewatering, δci-t2 (ft)Material Type 1
Total Consolidtion of Profile at t1, δc-t1 (ft):
Total Consolidtion of Profile at t2, δc-t2 (ft):
Effective Stress at
Midpoint of Layer at
t1, σ'i-mid1 (psf)
Effective Stress at
Bottom of Layer at
t1, σ'i-bott1 (psf)
Consolidtion of Layer from t0
to t1 due to Final Cover
Placement and Dewatering, δci-
t1 (ft)
Settlement_30Aug2015.xls Page 19 of 31
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Settlement Analyses
5621.51 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl) From cover deisgn grading plan AutoCAD file
From Appendix C - Radon Emanation Modeling (MWH, 2015)
3.50 Thickness of Water Storage/Rooting Zone (ft) From Appendix C - Radon Emanation Modeling (MWH, 2015)
3.50 Thickness of High Compaction Layer (ft) From Appendix C - Radon Emanation Modeling (MWH, 2015)
3.19 Thickness of Random/Platform Fill on on top of existing interim cover (ft) Calculated
1167.12 Additional Stress due to Final Cover Placement, ΔσFC (psf)Calculated
5605.30 Water surface elevation during CPT investigation (ft amsl)From on-site investigation (Tailings Data Analysis Report. MWH, 2015)
5602.7 Water surface elevation at t0 (ft amsl)Minimum of 5' below top of tailings or water surface elevation at time of CPT testing (2013)
5591.64 Water surface elevation at t1 (ft amsl)
5586.64 Water surface elevation at t2 (ft amsl)
3-2C
0.50
Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after
placement (ft)
FINAL COVER
PROFILE INFORMATION
Settlement_30Aug2015.xls Page 20 of 31
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Settlement Analyses
Layer 1 5610.82 5609.27 5607.71 3.11 Int. Cover 156.63 313.25 1323.75 1480.37 1323.75 1480.37 0.23 0.00
Layer 2 5607.71 5607.63 5607.54 0.17 Sand 323.75 334.24 1490.87 1501.36 1490.87 1501.36 0.01 0.00
Layer 3 5607.54 5607.46 5607.38 0.16 Sand-Slime 343.76 353.28 1510.88 1520.40 1510.88 1520.40 0.01 0.00
Layer 4 5607.38 5606.89 5606.39 0.99 Slime 409.28 465.28 1576.40 1632.40 1576.40 1632.40 0.07 0.00
Layer 5 5606.39 5605.98 5605.57 0.82 Sand-Slime 514.05 562.83 1681.17 1729.95 1681.17 1729.95 0.05 0.00
Layer 6 5605.57 5605.41 5605.24 0.33 Slime 581.50 600.16 1748.62 1767.28 1748.62 1767.28 0.02 0.00
Layer 7 5605.24 5605.08 5604.92 0.32 Sand-Slime 619.20 638.24 1786.32 1805.36 1786.32 1805.36 0.02 0.00
Layer 8 5604.92 5604.59 5604.26 0.66 Slime 675.57 712.90 1842.69 1880.02 1842.69 1880.02 0.04 0.00
Layer 9 5604.26 5600.82 5597.37 6.89 Sand-Slime 1004.51 1199.40 2289.88 2699.73 2289.88 2699.73 0.30 0.00
Layer 10 5597.37 5597.29 5597.21 0.16 Slime 1203.45 1207.51 2708.78 2717.83 2708.78 2717.83 0.01 0.00
Layer 11 5597.21 5596.96 5596.71 0.50 Sand-Slime 1221.66 1235.80 2747.58 2777.32 2747.58 2777.32 0.02 0.00
Layer 12 5596.71 5596.22 5595.73 0.98 Slime 1260.66 1285.51 2832.75 2888.18 2832.75 2888.18 0.04 0.00
Layer 13 5595.73 5594.99 5594.25 1.48 Sand-Slime 1327.37 1369.24 2976.22 3064.26 2976.22 3064.26 0.06 0.00
Layer 14 5594.25 5594.17 5594.09 0.16 Slime 1373.30 1377.35 3073.31 3082.36 3073.31 3082.36 0.01 0.00
Layer 15 5594.09 5593.52 5592.94 1.15 Sand-Slime 1409.88 1442.41 3150.77 3219.18 3150.77 3219.18 0.05 0.00
Layer 16 5592.94 5592.78 5592.61 0.33 Slime 1450.78 1459.15 3237.84 3256.51 3237.84 3256.51 0.01 0.00
Layer 17 5592.61 5592.20 5591.79 0.82 Sand-Slime 1482.35 1505.54 3305.29 3354.07 3305.29 3354.07 0.03 0.00
Layer 18 5591.79 5591.63 5591.46 0.33 Slime 1513.91 1522.28 3371.80 3380.17 3372.73 3391.40 0.01 0.00
Layer 19 5591.46 5591.22 5590.97 0.49 Sand-Slime 1536.14 1550.00 3394.03 3407.89 3420.55 3449.70 0.02 0.00
Layer 20 5590.97 5590.89 5590.81 0.16 Slime 1554.06 1558.12 3411.95 3416.00 3458.75 3467.80 0.01 0.00
Layer 21 5590.81 5590.65 5590.48 0.33 Sand-Slime 1567.45 1576.78 3425.34 3434.67 3487.43 3507.06 0.01 0.00
Layer 22 5590.48 5588.56 5586.64 3.84 Sand-Slime 1685.40 1794.02 3543.29 3651.91 3735.48 3724.29 0.15 0.01
1.19
0.01
Notes:
1 From on-site investigation (Tailings Data Analysis Report. MWH, 2015)
3-2C
CONSOLIDATION SETTLEMENT
Consolidtion of Layer from t1 to t2 due to
Dewatering, δci-t2 (ft)
Total Consolidtion of Profile at t1, δc-t1 (ft):
Soil Layer
Elevation at Top of Layer at t0, zi-
top0 (ft amsl) 1
Elevation at
Midpoint of Layer
at t0, zi-mid0 (ft amsl)
Effective Stress at
Midpoint of Layer at
t0, σ'i-mid0 (psf)
Effective Stress at
Midpoint of Layer at
t2, σ'i-mid2 (psf)
Total Consolidtion of Profile at t2, δc-t2 (ft):
Consolidtion of Layer from t0
to t1 due to Final Cover
Placement and Dewatering, δci-
t1 (ft)
Elevation at
Bottom of Layer at
t0, zi-bott0 (ft amsl) 1
Thickness of
Layer at t0, H (ft)
Effective Stress at
Bottom of Layer at
t0, σ'i-bott0 (psf)
Effective Stress at
Midpoint of Layer at
t1, σ'i-mid1 (psf)
Effective Stress at
Bottom of Layer at
t1, σ'i-bott1 (psf)
Effective Stress at
Bottom of Layer at
t2, σ'i-bott2 (psf)Material Type 1
Settlement_30Aug2015.xls Page 21 of 31
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Settlement Analyses
5620.49 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl) From cover deisgn grading plan AutoCAD file
From Appendix C - Radon Emanation Modeling (MWH, 2015)
3.50 Thickness of Water Storage/Rooting Zone (ft) From Appendix C - Radon Emanation Modeling (MWH, 2015)
3.50 Thickness of High Compaction Layer (ft) From Appendix C - Radon Emanation Modeling (MWH, 2015)
3.36 Thickness of Random/Platform Fill on on top of existing interim cover (ft) Calculated
1184.24 Additional Stress due to Final Cover Placement, ΔσFC (psf)Calculated
5605.60 Water surface elevation during CPT investigation (ft amsl)From on-site investigation (Tailings Data Analysis Report. MWH, 2015)
5601.5 Water surface elevation at t0 (ft amsl)Minimum of 5' below top of tailings or water surface elevation at time of CPT testing (2013)
5582.14 Water surface elevation at t1 (ft amsl)
5577.14 Water surface elevation at t2 (ft amsl)
FINAL COVER
0.50
Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after
placement (ft)
PROFILE INFORMATION
3-3S
Settlement_30Aug2015.xls Page 22 of 31
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Settlement Analyses
Layer 1 5609.63 5608.08 5606.52 3.11 Int. Cover 156.63 313.25 1340.87 1497.50 1340.87 1497.50 0.23 0.00
Layer 2 5606.52 5606.11 5605.70 0.82 Sand 363.88 414.50 1548.12 1598.75 1548.12 1598.75 0.04 0.00
Layer 3 5605.70 5605.45 5605.20 0.50 Sand-Slime 444.25 473.99 1628.49 1658.23 1628.49 1658.23 0.03 0.00
Layer 4 5605.20 5604.47 5603.73 1.47 Sand 564.74 655.50 1748.99 1839.74 1748.99 1839.74 0.05 0.00
Layer 5 5603.73 5602.50 5601.27 2.46 Sand-Slime 801.83 932.57 1986.07 2132.41 1986.07 2132.41 0.12 0.00
Layer 6 5601.27 5601.11 5600.94 0.33 Slime 940.94 949.31 2151.07 2169.74 2151.07 2169.74 0.01 0.00
Layer 7 5600.94 5600.86 5600.78 0.16 Sand-Slime 953.83 958.36 2179.26 2188.78 2179.26 2188.78 0.01 0.00
Layer 8 5600.78 5600.62 5600.45 0.33 Slime 966.73 975.10 2207.44 2226.11 2207.44 2226.11 0.01 0.00
Layer 9 5600.45 5599.55 5598.64 1.81 Sand-Slime 1026.29 1077.49 2333.78 2441.45 2333.78 2441.45 0.08 0.00
Layer 10 5598.64 5598.23 5597.82 0.82 Slime 1098.29 1119.09 2487.83 2534.21 2487.83 2534.21 0.04 0.00
Layer 11 5597.82 5597.58 5597.33 0.49 Sand-Slime 1132.95 1146.81 2563.36 2592.51 2563.36 2592.51 0.02 0.00
Layer 12 5597.33 5597.25 5597.17 0.16 Slime 1150.87 1154.92 2601.56 2610.61 2601.56 2610.61 0.01 0.00
Layer 13 5597.17 5596.35 5595.53 1.64 Sand-Slime 1201.31 1247.70 2708.16 2805.72 2708.16 2805.72 0.07 0.00
Layer 14 5595.53 5595.45 5595.36 0.17 Slime 1252.01 1256.32 2815.34 2824.95 2815.34 2824.95 0.01 0.00
Layer 15 5595.36 5595.20 5595.03 0.33 Sand-Slime 1265.66 1274.99 2844.58 2864.21 2844.58 2864.21 0.01 0.00
Layer 16 5595.03 5594.71 5594.38 0.65 Slime 1291.48 1307.97 2900.98 2937.74 2900.98 2937.74 0.03 0.00
Layer 17 5594.38 5593.89 5593.39 0.99 Sand-Slime 1335.97 1363.97 2996.64 3055.53 2996.64 3055.53 0.04 0.00
Layer 18 5593.39 5593.07 5592.74 0.65 Slime 1380.46 1396.94 3092.29 3129.06 3092.29 3129.06 0.03 0.00
Layer 19 5592.74 5592.17 5591.59 1.15 Sand-Slime 1429.47 1462.00 3197.47 3265.88 3197.47 3265.88 0.05 0.00
Layer 20 5591.59 5591.51 5591.43 0.16 Slime 1466.06 1470.12 3274.93 3283.98 3274.93 3283.98 0.01 0.00
Layer 21 5591.43 5590.94 5590.44 0.99 Sand-Slime 1498.12 1526.12 3342.87 3401.76 3342.87 3401.76 0.04 0.00
Layer 22 5590.44 5590.36 5590.28 0.16 Slime 1530.18 1534.24 3410.81 3419.86 3410.81 3419.86 0.01 0.00
Layer 23 5590.28 5589.71 5589.13 1.15 Sand-Slime 1566.77 1599.30 3488.27 3556.68 3488.27 3556.68 0.05 0.00
Layer 24 5589.13 5588.97 5588.80 0.33 Sand 1609.37 1619.45 3577.05 3597.42 3577.05 3597.42 0.01 0.00
Layer 25 5588.80 5587.57 5586.34 2.46 Sand-Slime 1689.03 1758.62 3743.76 3890.09 3743.76 3890.09 0.10 0.00
Layer 26 5586.34 5586.10 5585.85 0.49 Sand 1773.58 1788.54 3920.34 3950.59 3920.34 3950.59 0.01 0.00
Layer 27 5585.85 5581.50 5577.14 8.71 Sand-Slime 2034.91 2281.28 4428.47 4674.84 4468.72 4443.33 0.36 0.00
1.47
0.00
Notes:
1 From on-site investigation (Tailings Data Analysis Report. MWH, 2015)
Total Consolidtion of Profile at t1, δc-t1 (ft):
Total Consolidtion of Profile at t2, δc-t2 (ft):
Consolidtion of Layer from t0
to t1 due to Final Cover
Placement and Dewatering, δci-
t1 (ft)
Consolidtion of Layer from t1 to t2 due to
Dewatering, δci-t2 (ft)
Effective Stress at
Midpoint of Layer at
t0, σ'i-mid0 (psf)
Effective Stress at
Bottom of Layer at
t0, σ'i-bott0 (psf)
Effective Stress at
Midpoint of Layer at
t1, σ'i-mid1 (psf)
Effective Stress at
Bottom of Layer at
t1, σ'i-bott1 (psf)
Effective Stress at
Midpoint of Layer at
t2, σ'i-mid2 (psf)
Effective Stress at
Bottom of Layer at
t2, σ'i-bott2 (psf)Soil Layer
Elevation at Top of Layer at t0, zi-
top0 (ft amsl) 1
Elevation at
Midpoint of Layer
at t0, zi-mid0 (ft amsl)
Elevation at
Bottom of Layer at
t0, zi-bott0 (ft amsl) 1
Thickness of
Layer at t0, H (ft)Material Type 1
3-3S
CONSOLIDATION SETTLEMENT
Settlement_30Aug2015.xls Page 23 of 31
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Settlement Analyses
5623.36 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl) From cover deisgn grading plan AutoCAD file
From Appendix C - Radon Emanation Modeling (MWH, 2015)
3.50 Thickness of Water Storage/Rooting Zone (ft) From Appendix C - Radon Emanation Modeling (MWH, 2015)
3.50 Thickness of High Compaction Layer (ft) From Appendix C - Radon Emanation Modeling (MWH, 2015)
7.16 Thickness of Random/Platform Fill on on top of existing interim cover (ft) Calculated
1567.00 Additional Stress due to Final Cover Placement, ΔσFC (psf)Calculated
5606.00 Water surface elevation during CPT investigation (ft amsl)From on-site investigation (Tailings Data Analysis Report. MWH, 2015)
5600.6 Water surface elevation at t0 (ft amsl)Minimum of 5' below top of tailings or water surface elevation at time of CPT testing (2013)
5583.71 Water surface elevation at t1 (ft amsl)
5578.71 Water surface elevation at t2 (ft amsl)
PROFILE INFORMATION
0.50
3-4N
Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after
placement (ft)
FINAL COVER
Settlement_30Aug2015.xls Page 24 of 31
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Settlement Analyses
Layer 1 5608.70 5607.14 5605.58 3.12 Int. Cover 157.13 314.26 1724.13 1881.26 1724.13 1881.26 0.26 0.00
Layer 2 5605.58 5604.60 5603.61 1.97 Sand 435.88 557.51 2002.88 2124.50 2002.88 2124.50 0.09 0.00
Layer 3 5603.61 5601.32 5599.02 4.59 Sand-Slime 830.54 1006.24 2397.54 2670.58 2397.54 2670.58 0.26 0.00
Layer 4 5599.02 5598.20 5597.38 1.64 Slime 1047.84 1089.43 2763.35 2856.11 2763.35 2856.11 0.08 0.00
Layer 5 5597.38 5597.22 5597.05 0.33 Sand-Slime 1098.77 1108.10 2875.74 2895.37 2875.74 2895.37 0.02 0.00
Layer 6 5597.05 5596.72 5596.39 0.66 Sand 1128.26 1148.41 2936.12 2976.86 2936.12 2976.86 0.02 0.00
Layer 7 5596.39 5596.31 5596.23 0.16 Slime 1152.47 1156.53 2985.91 2994.96 2985.91 2994.96 0.01 0.00
Layer 8 5596.23 5596.07 5595.90 0.33 Sand-Slime 1165.86 1175.20 3014.59 3034.22 3014.59 3034.22 0.02 0.00
Layer 9 5595.90 5595.82 5595.74 0.16 Sand 1180.08 1184.97 3044.10 3053.98 3044.10 3053.98 0.00 0.00
Layer 10 5595.74 5595.66 5595.57 0.17 Slime 1189.28 1193.59 3063.60 3073.21 3063.60 3073.21 0.01 0.00
Layer 11 5595.57 5595.49 5595.41 0.16 Sand-Slime 1198.12 1202.64 3082.73 3092.25 3082.73 3092.25 0.01 0.00
Layer 12 5595.41 5595.00 5594.59 0.82 Slime 1223.44 1244.24 3138.63 3185.01 3138.63 3185.01 0.04 0.00
Layer 13 5594.59 5594.43 5594.26 0.33 Sand-Slime 1253.57 1262.91 3204.64 3224.27 3204.64 3224.27 0.02 0.00
Layer 14 5594.26 5594.10 5593.93 0.33 Slime 1271.28 1279.65 3242.94 3261.60 3242.94 3261.60 0.02 0.00
Layer 15 5593.93 5590.74 5587.54 6.39 Sand-Slime 1460.39 1641.14 3641.72 4021.83 3641.72 4021.83 0.31 0.00
Layer 16 5587.54 5583.13 5578.71 8.83 Sand-Slime 1890.90 2140.66 4510.59 4760.35 4547.09 4521.36 0.40 0.00
1.56
0.00
Notes:
1 From on-site investigation (Tailings Data Analysis Report. MWH, 2015)
Effective Stress at
Midpoint of Layer at
t0, σ'i-mid0 (psf)
Effective Stress at
Bottom of Layer at
t0, σ'i-bott0 (psf)
Elevation at
Midpoint of Layer
at t0, zi-mid0 (ft amsl)
Elevation at
Bottom of Layer at
t0, zi-bott0 (ft amsl) 1
Thickness of
Layer at t0, H (ft)
3-4N
CONSOLIDATION SETTLEMENT
Soil Layer
Elevation at Top of Layer at t0, zi-
top0 (ft amsl) 1
Effective Stress at
Midpoint of Layer at
t2, σ'i-mid2 (psf)
Effective Stress at
Bottom of Layer at
t2, σ'i-bott2 (psf)
Consolidtion of Layer from t1 to t2 due to
Dewatering, δci-t2 (ft)Material Type 1
Total Consolidtion of Profile at t1, δc-t1 (ft):
Total Consolidtion of Profile at t2, δc-t2 (ft):
Effective Stress at
Midpoint of Layer at
t1, σ'i-mid1 (psf)
Effective Stress at
Bottom of Layer at
t1, σ'i-bott1 (psf)
Consolidtion of Layer from t0
to t1 due to Final Cover
Placement and Dewatering, δci-
t1 (ft)
Settlement_30Aug2015.xls Page 25 of 31
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Settlement Analyses
5623.62 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl) From cover deisgn grading plan AutoCAD file
From Appendix C - Radon Emanation Modeling (MWH, 2015)
3.50 Thickness of Water Storage/Rooting Zone (ft) From Appendix C - Radon Emanation Modeling (MWH, 2015)
3.50 Thickness of High Compaction Layer (ft) From Appendix C - Radon Emanation Modeling (MWH, 2015)
8.68 Thickness of Random/Platform Fill on on top of existing interim cover (ft) Calculated
1720.10 Additional Stress due to Final Cover Placement, ΔσFC (psf)Calculated
5604.20 Water surface elevation during CPT investigation (ft amsl)From on-site investigation (Tailings Data Analysis Report. MWH, 2015)
5599.3 Water surface elevation at t0 (ft amsl)Minimum of 5' below top of tailings or water surface elevation at time of CPT testing (2013)
5590.44 Water surface elevation at t1 (ft amsl)
5585.44 Water surface elevation at t2 (ft amsl)
3-6N
0.50
Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after
placement (ft)
FINAL COVER
PROFILE INFORMATION
Settlement_30Aug2015.xls Page 26 of 31
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Settlement Analyses
Layer 1 5607.44 5605.88 5604.32 3.12 Int. Cover 157.13 314.26 1877.23 2034.36 1877.23 2034.36 0.27 0.00
Layer 2 5604.32 5604.24 5604.16 0.16 Sand-Slime 323.78 333.30 2043.88 2053.40 2043.88 2053.40 0.02 0.00
Layer 3 5604.16 5604.00 5603.83 0.33 Sand 353.67 374.04 2073.77 2094.14 2073.77 2094.14 0.02 0.00
Layer 4 5603.83 5603.67 5603.50 0.33 Sand-Slime 393.67 413.30 2113.77 2133.40 2113.77 2133.40 0.03 0.00
Layer 5 5603.50 5603.18 5602.85 0.65 Slime 450.07 486.84 2170.17 2206.94 2170.17 2206.94 0.05 0.00
Layer 6 5602.85 5602.44 5602.03 0.82 Sand-Slime 535.61 584.39 2255.71 2304.49 2255.71 2304.49 0.06 0.00
Layer 7 5602.03 5601.78 5601.53 0.50 Slime 612.67 640.96 2332.77 2361.06 2332.77 2361.06 0.04 0.00
Layer 8 5601.53 5601.29 5601.04 0.49 Sand-Slime 670.10 699.25 2390.20 2419.35 2390.20 2419.35 0.03 0.00
Layer 9 5601.04 5600.96 5600.88 0.16 Sand 709.13 719.01 2429.23 2439.11 2429.23 2439.11 0.01 0.00
Layer 10 5600.88 5600.72 5600.55 0.33 Sand-Slime 738.64 758.27 2458.74 2478.37 2458.74 2478.37 0.02 0.00
Layer 11 5600.55 5600.39 5600.22 0.33 Slime 776.94 795.60 2497.03 2515.70 2497.03 2515.70 0.02 0.00
Layer 12 5600.22 5600.06 5599.89 0.33 Sand-Slime 815.23 834.86 2535.33 2554.96 2535.33 2554.96 0.02 0.00
Layer 13 5599.89 5599.48 5599.07 0.82 Slime 881.24 912.03 2601.34 2647.73 2601.34 2647.73 0.05 0.00
Layer 14 5599.07 5598.91 5598.74 0.33 Sand-Slime 921.36 930.69 2667.36 2686.99 2667.36 2686.99 0.02 0.00
Layer 15 5598.74 5598.09 5597.43 1.31 Slime 963.92 997.15 2761.08 2835.18 2761.08 2835.18 0.07 0.00
Layer 16 5597.43 5597.27 5597.10 0.33 Sand-Slime 1006.48 1015.82 2854.81 2874.44 2854.81 2874.44 0.02 0.00
Layer 17 5597.10 5594.48 5591.86 5.24 Slime 1148.72 1281.63 3170.84 3467.23 3170.84 3467.23 0.28 0.00
Layer 18 5591.86 5590.88 5589.89 1.97 Sand-Slime 1337.35 1393.07 3584.42 3667.28 3584.42 3701.60 0.10 0.00
Layer 19 5589.89 5589.40 5588.90 0.99 Slime 1418.18 1443.29 3692.39 3717.50 3757.60 3813.60 0.05 0.00
Layer 20 5588.90 5587.17 5585.44 3.46 Sand-Slime 1541.16 1639.03 3815.37 3913.24 4019.42 4009.34 0.16 0.01
1.34
0.01
Notes:
1 From on-site investigation (Tailings Data Analysis Report. MWH, 2015)
3-6N
CONSOLIDATION SETTLEMENT
Consolidtion of Layer from t1 to t2 due to
Dewatering, δci-t2 (ft)
Total Consolidtion of Profile at t1, δc-t1 (ft):
Soil Layer
Elevation at Top of Layer at t0, zi-
top0 (ft amsl) 1
Elevation at
Midpoint of Layer
at t0, zi-mid0 (ft amsl)
Effective Stress at
Midpoint of Layer at
t0, σ'i-mid0 (psf)
Effective Stress at
Midpoint of Layer at
t2, σ'i-mid2 (psf)
Total Consolidtion of Profile at t2, δc-t2 (ft):
Consolidtion of Layer from t0
to t1 due to Final Cover
Placement and Dewatering, δci-
t1 (ft)
Elevation at
Bottom of Layer at
t0, zi-bott0 (ft amsl) 1
Thickness of
Layer at t0, H (ft)
Effective Stress at
Bottom of Layer at
t0, σ'i-bott0 (psf)
Effective Stress at
Midpoint of Layer at
t1, σ'i-mid1 (psf)
Effective Stress at
Bottom of Layer at
t1, σ'i-bott1 (psf)
Effective Stress at
Bottom of Layer at
t2, σ'i-bott2 (psf)Material Type 1
Settlement_30Aug2015.xls Page 27 of 31
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Settlement Analyses
5623.82 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl) From cover deisgn grading plan AutoCAD file
From Appendix C - Radon Emanation Modeling (MWH, 2015)
3.50 Thickness of Water Storage/Rooting Zone (ft) From Appendix C - Radon Emanation Modeling (MWH, 2015)
3.50 Thickness of High Compaction Layer (ft) From Appendix C - Radon Emanation Modeling (MWH, 2015)
7.95 Thickness of Random/Platform Fill on on top of existing interim cover (ft) Calculated
1646.57 Additional Stress due to Final Cover Placement, ΔσFC (psf)Calculated
5604.90 Water surface elevation during CPT investigation (ft amsl)From on-site investigation (Tailings Data Analysis Report. MWH, 2015)
5600.3 Water surface elevation at t0 (ft amsl)Minimum of 5' below top of tailings or water surface elevation at time of CPT testing (2013)
5595.24 Water surface elevation at t1 (ft amsl)
5590.24 Water surface elevation at t2 (ft amsl)
PROFILE INFORMATION
0.50
3-8N
Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after
placement (ft)
FINAL COVER
Settlement_30Aug2015.xls Page 28 of 31
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Settlement Analyses
Layer 1 5608.37 5606.81 5605.25 3.12 Int. Cover 157.13 314.26 1803.70 1960.83 1803.70 1960.83 0.27 0.00
Layer 2 5605.25 5605.17 5605.09 0.16 Slime 323.31 332.36 1969.88 1978.93 1969.88 1978.93 0.02 0.00
Layer 3 5605.09 5605.01 5604.92 0.17 Sand 342.86 353.35 1989.43 1999.92 1989.43 1999.92 0.01 0.00
Layer 4 5604.92 5604.60 5604.27 0.65 Sand-Slime 392.02 430.68 2038.59 2077.25 2038.59 2077.25 0.06 0.00
Layer 5 5604.27 5604.11 5603.94 0.33 Sand 451.06 471.43 2097.63 2118.00 2097.63 2118.00 0.02 0.00
Layer 6 5603.94 5603.78 5603.61 0.33 Sand-Slime 491.06 510.69 2137.63 2157.26 2137.63 2157.26 0.03 0.00
Layer 7 5603.61 5602.55 5601.48 2.13 Sand 642.19 773.69 2288.76 2420.26 2288.76 2420.26 0.08 0.00
Layer 8 5601.48 5598.45 5595.41 6.07 Sand-Slime 1022.14 1193.83 2781.34 3142.42 2781.34 3142.42 0.32 0.00
Layer 9 5595.41 5595.33 5595.24 0.17 Slime 1198.14 1202.45 3152.03 3151.04 3152.03 3161.65 0.01 0.00
Layer 10 5595.24 5594.18 5593.11 2.13 Sand-Slime 1262.70 1322.95 3211.29 3271.54 3288.35 3415.06 0.10 0.00
Layer 11 5593.11 5591.68 5590.24 2.87 Sand-Slime 1404.13 1485.31 3352.72 3433.90 3585.78 3577.42 0.13 0.01
1.03
0.01
Notes:
1 From on-site investigation (Tailings Data Analysis Report. MWH, 2015)
Effective Stress at
Midpoint of Layer at
t0, σ'i-mid0 (psf)
Effective Stress at
Bottom of Layer at
t0, σ'i-bott0 (psf)
Elevation at
Midpoint of Layer
at t0, zi-mid0 (ft amsl)
Elevation at
Bottom of Layer at
t0, zi-bott0 (ft amsl) 1
Thickness of
Layer at t0, H (ft)
3-8N
CONSOLIDATION SETTLEMENT
Soil Layer
Elevation at Top of Layer at t0, zi-
top0 (ft amsl) 1
Effective Stress at
Midpoint of Layer at
t2, σ'i-mid2 (psf)
Effective Stress at
Bottom of Layer at
t2, σ'i-bott2 (psf)
Consolidtion of Layer from t1 to t2 due to
Dewatering, δci-t2 (ft)Material Type 1
Total Consolidtion of Profile at t1, δc-t1 (ft):
Total Consolidtion of Profile at t2, δc-t2 (ft):
Effective Stress at
Midpoint of Layer at
t1, σ'i-mid1 (psf)
Effective Stress at
Bottom of Layer at
t1, σ'i-bott1 (psf)
Consolidtion of Layer from t0
to t1 due to Final Cover
Placement and Dewatering, δci-
t1 (ft)
Settlement_30Aug2015.xls Page 29 of 31
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Settlement Analyses
5620.45 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl) From cover deisgn grading plan AutoCAD file
From Appendix C - Radon Emanation Modeling (MWH, 2015)
3.50 Thickness of Water Storage/Rooting Zone (ft) From Appendix C - Radon Emanation Modeling (MWH, 2015)
3.50 Thickness of High Compaction Layer (ft) From Appendix C - Radon Emanation Modeling (MWH, 2015)
4.25 Thickness of Random/Platform Fill on on top of existing interim cover (ft) Calculated
1273.89 Additional Stress due to Final Cover Placement, ΔσFC (psf)Calculated
5603.50 Water surface elevation during CPT investigation (ft amsl)From on-site investigation (Tailings Data Analysis Report. MWH, 2015)
5600.6 Water surface elevation at t0 (ft amsl)Minimum of 5' below top of tailings or water surface elevation at time of CPT testing (2013)
5590.63 Water surface elevation at t1 (ft amsl)
5585.63 Water surface elevation at t2 (ft amsl)
3-8S
0.50
Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after
placement (ft)
FINAL COVER
PROFILE INFORMATION
Settlement_30Aug2015.xls Page 30 of 31
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Settlement Analyses
Layer 1 5608.70 5607.15 5605.59 3.11 Int. Cover 156.63 313.25 1430.52 1587.14 1430.52 1587.14 0.24 0.00
Layer 2 5605.59 5605.02 5604.44 1.15 Sand 384.25 455.25 1658.14 1729.14 1658.14 1729.14 0.05 0.00
Layer 3 5604.44 5604.28 5604.11 0.33 Sand-Slime 474.88 494.51 1748.77 1768.40 1748.77 1768.40 0.02 0.00
Layer 4 5604.11 5604.03 5603.95 0.16 Sand 504.39 514.27 1778.28 1788.15 1778.28 1788.15 0.01 0.00
Layer 5 5603.95 5603.54 5603.13 0.82 Sand-Slime 563.04 611.82 1836.93 1885.71 1836.93 1885.71 0.05 0.00
Layer 6 5603.13 5601.33 5599.52 3.61 Sand 834.69 990.80 2108.58 2331.45 2108.58 2331.45 0.10 0.00
Layer 7 5599.52 5599.36 5599.19 0.33 Sand-Slime 1000.13 1009.46 2351.08 2370.71 2351.08 2370.71 0.01 0.00
Layer 8 5599.19 5599.03 5598.86 0.33 Sand 1019.54 1029.62 2391.09 2411.46 2391.09 2411.46 0.01 0.00
Layer 9 5598.86 5596.89 5594.92 3.94 Sand-Slime 1141.06 1252.51 2645.83 2880.21 2645.83 2880.21 0.17 0.00
Layer 10 5594.92 5594.84 5594.76 0.16 Slime 1256.57 1260.63 2889.26 2898.31 2889.26 2898.31 0.01 0.00
Layer 11 5594.76 5594.60 5594.43 0.33 Sand-Slime 1269.96 1279.30 2917.94 2937.57 2917.94 2937.57 0.01 0.00
Layer 12 5594.43 5594.11 5593.78 0.65 Slime 1295.78 1312.27 2974.33 3011.10 2974.33 3011.10 0.03 0.00
Layer 13 5593.78 5593.62 5593.45 0.33 Sand-Slime 1321.60 1330.94 3030.73 3050.36 3030.73 3050.36 0.01 0.00
Layer 14 5593.45 5589.54 5585.63 7.82 Sand-Slime 1552.13 1773.32 3447.52 3668.72 3515.54 3492.75 0.33 0.01
1.06
0.01
Notes:
1 From on-site investigation (Tailings Data Analysis Report. MWH, 2015)
3-8S
CONSOLIDATION SETTLEMENT
Consolidtion of Layer from t1 to t2 due to
Dewatering, δci-t2 (ft)
Total Consolidtion of Profile at t1, δc-t1 (ft):
Soil Layer
Elevation at Top of Layer at t0, zi-
top0 (ft amsl) 1
Elevation at
Midpoint of Layer
at t0, zi-mid0 (ft amsl)
Effective Stress at
Midpoint of Layer at
t0, σ'i-mid0 (psf)
Effective Stress at
Midpoint of Layer at
t2, σ'i-mid2 (psf)
Total Consolidtion of Profile at t2, δc-t2 (ft):
Consolidtion of Layer from t0
to t1 due to Final Cover
Placement and Dewatering, δci-
t1 (ft)
Elevation at
Bottom of Layer at
t0, zi-bott0 (ft amsl) 1
Thickness of
Layer at t0, H (ft)
Effective Stress at
Bottom of Layer at
t0, σ'i-bott0 (psf)
Effective Stress at
Midpoint of Layer at
t1, σ'i-mid1 (psf)
Effective Stress at
Bottom of Layer at
t1, σ'i-bott1 (psf)
Effective Stress at
Bottom of Layer at
t2, σ'i-bott2 (psf)Material Type 1
Settlement_30Aug2015.xls Page 31 of 31

Updated Tailings Cover Design Report

ATTACHMENT F.2
CREEP SETTLEMENT CALCULATIONS
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Settlement Analyses
Notes
t0 corresponds to beginning of final cover placement Assumes 99% of consolidation due to existing stress conditions has taken place
t1 corresponds to dewatering of the tailings to a level 5 feet above the liner
t2 corresponds to completion of dewatering
TAILINGS
2.70 Specific gravity of tailing sands, Gs-TSand Based on lab testing performed on uranium tailings sands and presented in Keshian and Rager (1988)
2.80 Specific gravity of tailing sand-slimes, Gs-TS-S Average value from lab testing of samples obtained on-site (Tailings Data Analysis Report. MWH, 2015)
2.86 Specific gravity of tailing slimes, Gs-TSlime Average value from lab testing of samples obtained on-site (Tailings Data Analysis Report. MWH, 2015)
18% Fines content of tailings sands (%) Average value from lab testing of samples obtained on-site (Tailings Data Analysis Report. MWH, 2015)
47% Fines content of tailings sand-slimes (%) Average value from lab testing of samples obtained on-site (Tailings Data Analysis Report. MWH, 2015)
71% Fines content of tailings slimes (%) Average value from lab testing of samples obtained on-site (Tailings Data Analysis Report. MWH, 2015)
97 In-situ dry unit weight of tailings sands at t0, γd0-Tsand (pcf)Average value from lab testing of samples obtained on-site (Tailings Data Analysis Report. MWH, 2015)
88 In-situ dry unit weight of tailings sand-slimes at t0, γd0-TS-S (pcf)Average value from lab testing of samples obtained on-site (Tailings Data Analysis Report. MWH, 2015)
78 In-situ dry unit weight of tailings slimes at t0, γd0-Tslime (pcf)Average value from lab testing of samples obtained on-site (Tailings Data Analysis Report. MWH, 2015)
123 In-situ saturated unit weight of tailings sands at t0, γsat0-Tsand (pcf)Calculated
119 In-situ saturated unit weight of tailings sand-slimes at t0, γsat0-TS-S (pcf)Calculated
113 In-situ saturated unit weight of tailings slimes at t0, γsat0-Tslime (pcf)Calculated
123 Moist unit weight of tailings sands, γm-Tsand (pcf)Calculated, assuming 100% degree of saturation (conservative estimate of loading from these layers)
119 Moist unit weight of tailings sand-slimes, γm-TS-S (pcf)Calculated, assuming 100% degree of saturation (conservative estimate of loading from these layers)
113 Moist unit weight of tailings slimes, γm-Tslime (pcf)Calculated, assuming 100% degree of saturation (conservative estimate of loading from these layers)
0.74 Void ratio of tailing sands at t0, e0-TSand Calculated
0.99 Void ratio of tailing sand-slimes at t0, e0-TS-S Calculated
1.29 Void ratio of tailing slimes at t0, e0-TSlime Calculated
27%Saturated water content of tailings sands at t0, wsat0-TSand (%)Calculated
35%Saturated water content of tailings sand-slimes at t0, wsat0-TS-S (%)Calculated
45%Saturated water content of tailings slimes at t0, wsat0-TSlime (%)Calculated
27%Water content of moist tailings sands, wm-TSand (%)Calculated, assuming 100% saturation (conservative value used to estimate loading from these layers, actual long-term water content will be lower)
35%Water content of moist tailings sand-slimes, wm-TS-S (%)Calculated, assuming 100% saturation (conservative value used to estimate loading from these layers, actual long-term water content will be lower)
45%Water content of moist tailings slimes, wm-TSlime (%)Calculated, assuming 100% saturation (conservative value used to estimate loading from these layers, actual long-term water content will be lower)
0.12 Compression index of tailings sands, Cc-TSand Based on lab testing performed on uranium tailings sands and presented in Keshian and Rager (1988)
0.24 Compression index of tailings sand-slimes, Cc-TS-S Median value from lab testing of tailings sand-slimes samples obtained on-site (Tailings Data Analysis Report. MWH, 2015)
0.28 Compression index of tailings slimes, Cc-TSlime Median value from lab testing of tailings slimes samples obtained on-site (Tailings Data Analysis Report. MWH, 2015)
17 Normalized Blow Count for saturated tailings sands, N60-TSand
7 Normalized Blow Count for saturated tailings sand-slimes, N60-TS-S
4 Normalized Blow Count for saturated tailings slimes, N60-Tslime
Saturated Water Content, wSat
Water Content of Moist Tailings, wm-T
Compression Index, Cc
Normalized Blow Count, N60
SOIL PROPERTIES
Specific Gravity, Gs
Fines Content
Dry Unit Weight, γd
Saturated Unit Weight, γsat
Moist Unit Weight, γm
Void Ratio, e
Settlement_30Aug2015.xls Page 1 of 31
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Settlement Analyses
23 Normalized Blow Count for unsaturated tailings sands, N60-TSand
14 Normalized Blow Count for unsaturated tailings sand-slimes, N60-TS-S
10 Normalized Blow Count for unsaturated tailings slimes, N60-Tslime
62.4 Unit Weight of Water, γW
5.0 Height of water table above liner at t1, Hsat-1 (ft)Assumed for end of active maintenance
0.0 Height of water table above liner at t2, Hsat-2 (ft)
82.4 Atmospheric Pressure, Pa (kPa)Calculated assuming elev=5600' amsl. http://www.engineeringtoolbox.com/air-altitude-pressure-d_462.html
1722.0 Atmospheric Pressure, Pa (psf)Unit conversion calculation
5.2%Long-term moisture content of tailings, wtailings (%)From Attachment H - Radon Emanation Modeling including with this submittal
0.020 Ratio of Secondary Compression Index to Primary Compression Index, Cα/Cc Estimated from laboratory results presented in MWH (2015b), upper bound average Cfor sand-slime and slime tailings of 0.02
2.61 Specific gravity of topsoil, Gs-Topsoil From Attachment H - Radon Emanation Modeling including with this submittal
2.62 Specific gravity of rock mulch, Gs-mulch From Attachment H - Radon Emanation Modeling including with this submittal
2.63 Specific gravity of cover soil, Gs-cover From Attachment H - Radon Emanation Modeling including with this submittal
118.0 Maximum dry unit weight of cover soil γcover-max (pcf)Average calculated from laboratory testing results (UWM, 2012)
100.7 Moist unit weight of cover soil at 80% relative compaction, γcover80 (pcf)Calculated
107.0 Moist unit weight of cover soil at 85% relative compaction, γcover85 (pcf)Calculated
119.6 Moist unit weight of cover soil at 95% relative compaction, γcover95 (pcf)Calculated
127.5 Saturated unit weight of cover soil at 80% relative compaction, γcover80-sat (pcf)Calculated
100 Dry unit weight of topsoil layer at 85% relative compaction, γtopsoil5 (pcf)From Attachment H - Radon Emanation Modeling including with this submittal
105 Moist unit weight of topsoil layer at 85% relative compaction, γtopsoil5 (pcf)Calculated
106 Dry unit weight of rock mulch layer at 85% relative compaction, γmulch85 (pcf)From Attachment H - Radon Emanation Modeling including with this submittal
110 Moist unit weight of rock mulch layer at 85% relative compaction, γmulch85 (pcf)From Attachment H - Radon Emanation Modeling including with this submittal
0.74 Void Ratio of cover soil at 80% relative compaction, ecover80 Calculated
0.64 Void Ratio of cover soil at 85% relative compaction, ecover85 Calculated
0.46 Void Ratio of cover soil at 95% relative compaction, ecover95 Calculated
0.61 Void Ratio of topsoil at 85% relative compaction, etopsoil85 Calculated from porosity presented in Attachment H - Radon Emanation Modeling including with this submittal
0.54 Void Ratio of rock mulch at 85% relative compaction, emulch85 Calculated from porosity presented in Attachment H - Radon Emanation Modeling including with this submittal
6.7%Long-term moisture content of cover soil, wcover (%)Estimated based on measured 15bar water content. (UWM, 2012)
5.2%Long-term moisture content of topsoil, wtopsoil (%)From Attachment H - Radon Emanation Modeling including with this submittal
4.0%Long-term moisture content of rock mulch, wrockmulch (%)From Attachment H - Radon Emanation Modeling including with this submittal
0.14 Compression index of cover soil, Cc-cover Calculated from empirical equation for soil types similar to cover material (as presented in Holtz and Kovacs, 1981. Page 341). Cc = 0.30*(e0-0.27)
Unit Weight, γ
Void Ratio, e
Other
Other
COVER SOIL
Blow counts for material types calculated using method presented in Guide to Cone Penetration Testing for
Geotechnical Engineering, 5th Ed. (Robertson and Cabal, 2012).
Specific Gravity, Gs
Settlement_30Aug2015.xls Page 2 of 31
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Settlement Analyses
REFERENCES
Energy Fuels Resources (USA) Inc. (EFRI), 2012. Responses to Interrogatories – Round 1 for Reclamation Plan,
Revision 5.0, March 2012. August 15.
Holtz, R.D. and Kovacs, W.D., 1981. An Introduction to Geotechnical Engineering. Prentice Hall, Inc. New Jersey
Keshian, B., and Rager, R. 1988. Geotechnical Properties of Hydraulically Placed Uranium Mill Tailings, in
Hydraulically Fill Structures, Geotechnical Special Publication No. 21, Eds. Van Zyl, D., and Vick, S., ASCE, August.
MWH Americas, Inc. (MWH), 2015. White Mesa Mill Tailings Data Analysis Report. Prepared for Energy Fuels
Resources (USA) Inc. April.
University of Wisconsin-Madison (UWM), Wisconsin Geotechnics Laboratory, 2012. Compaction and Hydraulic
Properties of Soils from Banding, Utah. Geotechnics Report NO. 12-41 by C.H. Benson and X. Wang. July 24.
Settlement_30Aug2015.xls Page 3 of 31
Energy Fuels Resources (USA) Inc.
White Mesa MillSettlement Analyses
5625.87 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl) From cover deisgn grading plan AutoCAD file
From Appendix C - Radon Emanation Modeling (MWH, 2015)
3.50 Thickness of Water Storage/Rooting Zone (ft) From Appendix C - Radon Emanation Modeling (MWH, 2015)
4.00 Thickness of High Compaction Layer (ft) From Appendix C - Radon Emanation Modeling (MWH, 2015)
2.02 Thickness of Random/Platform Fill on on top of existing interim cover (ft) Calculated
1111.60 Additional Stress due to Final Cover Placement, ΔσFC (psf)Calculated
5613.10 Water surface elevation during CPT investigation (ft amsl)From on-site investigation (Tailings Data Analysis Report. MWH, 2015)
5607.7 Water surface elevation at t0 (ft amsl)Minimum of 5' below top of tailings or water surface elevation at time of CPT testing (2013).
5598.51 Water surface elevation at t1 (ft amsl)
5593.51 Water surface elevation at t2 (ft amsl)
PROFILE INFORMATION
FINAL COVER
0.50
Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after
placement (ft)
2W2
Settlement_30Aug2015.xls Page 4 of 31
Energy Fuels Resources (USA) Inc.
White Mesa MillSettlement Analyses
Erosion Protection Layer Erosion Protection Layer 5624.78 5624.53 5624.28 0.50 31.27 NA NA NA NA NA NA NA NA
Rooting Zone Rooting Zone 5624.28 5622.53 5620.78 3.50 30.77 NA NA NA NA NA NA NA NA
High-Compaction Layer High-Compaction Layer 5620.78 5618.78 5616.78 4.00 27.27 NA NA NA NA NA NA NA NA
Platform Fill Platform Fill 5616.78 5615.77 5614.76 2.02 23.27 NA NA NA NA NA NA NA NA
Layer 1 Int. Cover 5614.76 5613.32 5611.88 2.88 21.25 NA NA NA NA NA NA NA NA
Layer 2 Sand-Slime 5611.88 5611.42 5610.97 0.91 18.37 NA NA NA NA NA NA NA NA
Layer 3 Slime 5610.97 5610.89 5610.81 0.16 17.46 NA NA NA NA NA NA NA NA
Layer 4 Sand 5610.81 5610.65 5610.50 0.31 17.30 NA NA NA NA NA NA NA NA
Layer 5 Sand-Slime 5610.50 5610.42 5610.34 0.16 16.99 NA NA NA NA NA NA NA NA
Layer 6 Slime 5610.34 5609.95 5609.57 0.77 16.83 NA NA NA NA NA NA NA NA
Layer 7 Sand-Slime 5609.57 5609.49 5609.42 0.15 16.06 NA NA NA NA NA NA NA NA
Layer 8 Slime 5609.42 5609.18 5608.95 0.46 15.91 NA NA NA NA NA NA NA NA
Layer 9 Sand-Slime 5608.95 5608.71 5608.48 0.48 15.44 NA NA NA NA NA NA NA NA
Layer 10 Slime 5608.48 5607.93 5607.39 1.09 14.97 NA NA NA NA NA NA NA NA
Layer 11 Sand-Slime 5607.39 5607.23 5607.07 0.32 13.88 NA NA NA NA NA NA NA NA
Layer 12 Slime 5607.07 5606.68 5606.29 0.78 13.56 NA NA NA NA NA NA NA NA
Layer 13 Sand-Slime 5606.29 5605.97 5605.66 0.63 12.78 NA NA NA NA NA NA NA NA
Layer 14 Slime 5605.66 5605.42 5605.19 0.47 12.15 NA NA NA NA NA NA NA NA
Layer 15 Sand-Slime 5605.19 5605.03 5604.87 0.32 11.68 NA NA NA NA NA NA NA NA
Layer 16 Slime 5604.87 5604.71 5604.56 0.32 11.36 NA NA NA NA NA NA NA NA
Layer 17 Sand-Slime 5604.56 5604.40 5604.24 0.32 11.05 NA NA NA NA NA NA NA NA
Layer 18 Slime 5604.24 5604.01 5603.77 0.47 10.73 NA NA NA NA NA NA NA NA
Layer 19 Sand-Slime 5603.77 5603.61 5603.46 0.32 10.26 NA NA NA NA NA NA NA NA
Layer 20 Slime 5603.46 5602.99 5602.52 0.94 9.95 NA NA NA NA NA NA NA NA
Layer 21 Sand-Slime 5602.52 5602.44 5602.36 0.15 9.01 NA NA NA NA NA NA NA NA
Layer 22 Slime 5602.36 5601.97 5601.58 0.79 8.85 NA NA NA NA NA NA NA NA
Layer 23 Sand-Slime 5601.58 5601.34 5601.10 0.48 8.07 NA NA NA NA NA NA NA NA
Layer 24 Slime 5601.10 5601.02 5600.95 0.15 7.59 NA NA NA NA NA NA NA NA
Layer 25 Sand-Slime 5600.95 5600.87 5600.79 0.15 7.44 NA NA NA NA NA NA NA NA
Layer 26 Slime 5600.79 5600.40 5600.01 0.79 7.28 NA NA NA NA NA NA NA NA
Layer 27 Sand-Slime 5600.01 5599.62 5599.22 0.79 6.50 NA NA NA NA NA NA NA NA
Layer 28 Slime 5599.22 5598.51 5597.80 1.42 5.71 1548.29 3096.58 1.29 1.19 0.006 0.023 1.17 0.015
Layer 29 Sand-Slime 5597.80 5597.73 5597.65 0.15 4.29 1552.82 3105.63 0.99 0.90 0.005 0.020 0.88 0.002
Layer 30 Slime 5597.65 5597.34 5597.02 0.63 4.14 1569.56 3139.11 1.29 1.19 0.006 0.023 1.17 0.007
Layer 31 Sand-Slime 5597.02 5596.70 5596.39 0.63 3.51 1588.23 3176.45 0.99 0.91 0.005 0.020 0.89 0.007
Layer 32 Slime 5596.39 5596.23 5596.08 0.31 2.88 1596.34 3192.68 1.29 1.20 0.006 0.023 1.17 0.003
Layer 33 Sand-Slime 5596.08 5595.76 5595.44 0.63 2.57 1615.01 3230.02 0.99 0.91 0.005 0.020 0.89 0.007
Layer 34 Sand-Slime 5595.44 5594.48 5593.51 1.93 1.93 1671.86 3343.73 0.99 0.91 0.005 0.020 0.89 0.020
TOTAL: 0.06
Notes:
1 From on-site investigation (Tailings Data Analysis Report. MWH, 2015
Elevation at
Midpoint of
Layer at t1, zi-mid1
(ft amsl)
Elevation at
Bottom of Layer
at t1, zi-bott1 (ft
amsl)
Change in
Void Ratio
due to 1000
years of
Creep, ∆e
Final Void Ratio
After 1,000
years, efinal
Settlement
due to 1000
years of
Creep, δcreep
(ft)Material Type 1 Thickness of Layer at t0, H (ft)Thickness of Layer at t1, H (ft)
Height above
liner (ft)
2W2
CREEP SETTLEMENT
Soil Layer
Elevation at
Top of Layer
at t1, zi-top1 (ft
amsl)
Effective Stress at Midpoint of Layer at t1, σ'i-mid1 (psf)
Effective Stress at Bottom of Layer at t1, σ'i-bott1 (psf)Void Ratio at t0, e0
Void Ratio at t1, e1
Secondary Compression Index, Cα
Settlement_30Aug2015.xls Page 5 of 31
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Settlement Analyses
5626.27 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl) From cover deisgn grading plan AutoCAD file
From Appendix C - Radon Emanation Modeling (MWH, 2015)
3.50 Thickness of Water Storage/Rooting Zone (ft) From Appendix C - Radon Emanation Modeling (MWH, 2015)
4.00 Thickness of High Compaction Layer (ft) From Appendix C - Radon Emanation Modeling (MWH, 2015)
2.55 Thickness of Random/Platform Fill on on top of existing interim cover (ft) Calculated
1164.98 Additional Stress due to Final Cover Placement, ΔσFC (psf)Calculated
5613.80 Water surface elevation during CPT investigation (ft amsl) From on-site investigation (Tailings Data Analysis Report. MWH, 2015)
5607.6 Water surface elevation at t0 (ft amsl)Minimum of 5' below top of tailings or water surface elevation at time of CPT testing (2013).
5597.75 Water surface elevation at t1 (ft amsl)
5592.75 Water surface elevation at t2 (ft amsl)
FINAL COVER
PROFILE INFORMATION
0.50
Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after
placement (ft)
2W3
Settlement_30Aug2015.xls Page 6 of 31
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Settlement Analyses
Erosion Protection Layer Erosion Protection Layer 5625.12 5624.87 5624.62 0.50 32.37 NA NA NA NA NA NA NA NA
Rooting Zone Rooting Zone 5624.62 5622.87 5621.12 3.50 31.87 NA NA NA NA NA NA NA NA
High-Compaction Layer High-Compaction Layer 5621.12 5619.12 5617.12 4.00 28.37 NA NA NA NA NA NA NA NA
Platform Fill Platform Fill 5617.12 5615.85 5614.57 2.55 24.37 NA NA NA NA NA NA NA NA
Layer 1 Int. Cover 5614.57 5613.13 5611.70 2.88 21.82 NA NA NA NA NA NA NA NA
Layer 2 Sand-Slime 5611.70 5611.47 5611.24 0.45 18.95 NA NA NA NA NA NA NA NA
Layer 3 Slime 5611.24 5611.17 5611.09 0.16 18.49 NA NA NA NA NA NA NA NA
Layer 4 Sand-Slime 5611.09 5610.63 5610.17 0.91 18.34 NA NA NA NA NA NA NA NA
Layer 5 Slime 5610.17 5610.02 5609.86 0.31 17.42 NA NA NA NA NA NA NA NA
Layer 6 Sand-Slime 5609.86 5609.09 5608.31 1.55 17.11 NA NA NA NA NA NA NA NA
Layer 7 Slime 5608.31 5608.23 5608.15 0.16 15.56 NA NA NA NA NA NA NA NA
Layer 8 Sand-Slime 5608.15 5607.92 5607.68 0.47 15.40 NA NA NA NA NA NA NA NA
Layer 9 Slime 5607.68 5607.61 5607.53 0.15 14.93 NA NA NA NA NA NA NA NA
Layer 10 Sand-Slime 5607.53 5607.45 5607.37 0.16 14.78 NA NA NA NA NA NA NA NA
Layer 11 Slime 5607.37 5607.21 5607.04 0.32 14.62 NA NA NA NA NA NA NA NA
Layer 12 Sand-Slime 5607.04 5606.42 5605.80 1.24 14.29 NA NA NA NA NA NA NA NA
Layer 13 Slime 5605.80 5605.65 5605.49 0.31 13.05 NA NA NA NA NA NA NA NA
Layer 14 Sand-Slime 5605.49 5604.47 5603.45 2.05 12.74 NA NA NA NA NA NA NA NA
Layer 15 Slime 5603.45 5602.82 5602.19 1.25 10.70 NA NA NA NA NA NA NA NA
Layer 16 Sand-Slime 5602.19 5601.25 5600.31 1.89 9.44 NA NA NA NA NA NA NA NA
Layer 17 Slime 5600.31 5600.15 5599.99 0.32 7.56 NA NA NA NA NA NA NA NA
Layer 18 Sand-Slime 5599.99 5599.84 5599.68 0.31 7.24 NA NA NA NA NA NA NA NA
Layer 19 Slime 5599.68 5598.82 5597.95 1.73 6.93 NA NA NA NA NA NA NA NA
Layer 20 Sand-Slime 5597.95 5597.64 5597.33 0.62 5.20 3205.98 3230.29 0.99 0.90 0.005 0.020 0.88 0.006
Layer 21 Slime 5597.33 5597.17 5597.01 0.32 4.58 3238.66 3247.03 1.29 1.19 0.006 0.023 1.17 0.003
Layer 22 Sand-Slime 5597.01 5596.39 5595.76 1.26 4.26 3284.09 3321.14 0.99 0.90 0.005 0.020 0.88 0.013
Layer 23 Slime 5595.76 5595.44 5595.12 0.63 3.01 3337.88 3354.62 1.29 1.20 0.006 0.023 1.17 0.007
Layer 24 Sand-Slime 5595.12 5594.97 5594.81 0.32 2.37 3363.96 3373.29 0.99 0.91 0.005 0.020 0.89 0.003
Layer 25 Slime 5594.81 5594.57 5594.34 0.47 2.06 3385.72 3398.15 1.29 1.20 0.006 0.023 1.17 0.005
Layer 26 Sand-Slime 5594.34 5594.18 5594.02 0.32 1.59 3407.48 3416.81 0.99 0.91 0.005 0.020 0.89 0.003
Layer 27 Sand-Slime 5594.02 5593.38 5592.75 1.27 1.27 3454.15 3491.49 0.99 0.91 0.005 0.020 0.89 0.013
TOTAL: 0.05
Notes:1 From on-site investigation (Tailings Data Analysis Report. MWH, 2015)
Effective Stress at
Midpoint of Layer
at t1, σ'i-mid1 (psf)
Effective Stress at
Bottom of Layer at
t1, σ'i-bott1 (psf)
Void Ratio
at t0, e0
Void Ratio
at t1, e1Material Type 1 Thickness of
Layer at t1, H (ft)Height above liner (ft)
Secondary
Compression
Index, Cα
Change in
Void Ratio
due to 1000
years of Creep, ∆e
Final Void Ratio
After 1,000
years, efinal
Settlement
due to 1000
years of Creep, δcreep
(ft)
2W3
CREEP SETTLEMENT
Soil Layer
Elevation at
Top of Layer
at t1, zi-top1 (ft
amsl)
Elevation at
Midpoint of
Layer at t1, zi-mid1 (ft amsl)
Elevation at
Bottom of Layer
at t1, zi-bott1 (ft
amsl)
Settlement_30Aug2015.xls Page 7 of 31
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Settlement Analyses
5626.19 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl) From cover deisgn grading plan AutoCAD file
From Appendix C - Radon Emanation Modeling (MWH, 2015)
3.50 Thickness of Water Storage/Rooting Zone (ft) From Appendix C - Radon Emanation Modeling (MWH, 2015)
4.00 Thickness of High Compaction Layer (ft) From Appendix C - Radon Emanation Modeling (MWH, 2015)
1.95 Thickness of Random/Platform Fill on on top of existing interim cover (ft) Calculated
1104.55 Additional Stress due to Final Cover Placement, ΔσFC (psf)Calculated
5611.20 Water surface elevation during CPT investigation (ft amsl) From on-site investigation (Tailings Data Analysis Report. MWH, 2015)
5608.1 Water surface elevation at t0 (ft amsl)Minimum of 5' below top of tailings or water surface elevation at time of CPT testing (2013).
5593.51 Water surface elevation at t1 (ft amsl)
5588.51 Water surface elevation at t2 (ft amsl)
FINAL COVER
PROFILE INFORMATION
Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after
placement (ft)0.50
2W4-C
Settlement_30Aug2015.xls Page 8 of 31
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Settlement Analyses
Erosion Protection Layer Erosion Protection Layer 5624.90 5624.65 5624.40 0.50 36.39 NA NA NA NA NA NA NA NA
Rooting Zone Rooting Zone 5624.40 5622.65 5620.90 3.50 35.89 NA NA NA NA NA NA NA NA
High-Compaction Layer High-Compaction Layer 5620.90 5618.90 5616.90 4.00 32.39 NA NA NA NA NA NA NA NA
Platform Fill Platform Fill 5616.90 5615.92 5614.95 1.95 28.39 NA NA NA NA NA NA NA NA
Layer 1 Int. Cover 5614.95 5613.50 5612.05 2.89 26.44 NA NA NA NA NA NA NA NA
Layer 2 Sand 5612.05 5611.98 5611.90 0.15 23.54 NA NA NA NA NA NA NA NA
Layer 3 Sand-Slime 5611.90 5610.36 5608.82 3.09 23.39 NA NA NA NA NA NA NA NA
Layer 4 Slime 5608.82 5608.73 5608.65 0.16 20.31 NA NA NA NA NA NA NA NA
Layer 5 Sand-Slime 5608.65 5607.48 5606.30 2.36 20.14 NA NA NA NA NA NA NA NA
Layer 6 Slime 5606.30 5606.14 5605.99 0.31 17.79 NA NA NA NA NA NA NA NA
Layer 7 Sand-Slime 5605.99 5605.83 5605.68 0.32 17.48 NA NA NA NA NA NA NA NA
Layer 8 Slime 5605.68 5605.59 5605.51 0.16 17.17 NA NA NA NA NA NA NA NA
Layer 9 Sand-Slime 5605.51 5604.73 5603.94 1.57 17.00 NA NA NA NA NA NA NA NA
Layer 10 Slime 5603.94 5603.86 5603.79 0.15 15.43 NA NA NA NA NA NA NA NA
Layer 11 Sand-Slime 5603.79 5603.63 5603.47 0.32 15.28 NA NA NA NA NA NA NA NA
Layer 12 Slime 5603.47 5603.31 5603.15 0.32 14.96 NA NA NA NA NA NA NA NA
Layer 13 Sand-Slime 5603.15 5601.35 5599.54 3.61 14.64 NA NA NA NA NA NA NA NA
Layer 14 Slime 5599.54 5598.99 5598.44 1.10 11.03 NA NA NA NA NA NA NA NA
Layer 15 Sand-Slime 5598.44 5598.04 5597.65 0.79 9.93 NA NA NA NA NA NA NA NA
Layer 16 Slime 5597.65 5597.57 5597.50 0.15 9.14 NA NA NA NA NA NA NA NA
Layer 17 Sand-Slime 5597.50 5597.26 5597.03 0.47 8.99 NA NA NA NA NA NA NA NA
Layer 18 Slime 5597.03 5596.87 5596.71 0.32 8.52 NA NA NA NA NA NA NA NA
Layer 19 Sand-Slime 5596.71 5596.32 5595.92 0.79 8.20 NA NA NA NA NA NA NA NA
Layer 20 Slime 5595.92 5595.53 5595.14 0.79 7.41 NA NA NA NA NA NA NA NA
Layer 21 Sand-Slime 5595.14 5594.82 5594.51 0.63 6.63 NA NA NA NA NA NA NA NA
Layer 22 Slime 5594.51 5594.43 5594.35 0.15 6.00 NA NA NA NA NA NA NA NA
Layer 23 Sand-Slime 5594.35 5594.19 5594.04 0.32 5.84 NA NA NA NA NA NA NA NA
Layer 24 Slime 5594.04 5593.88 5593.72 0.32 5.53 NA NA NA NA NA NA NA NA
Layer 25 Sand-Slime 5593.72 5591.67 5589.63 4.09 5.21 3825.33 3945.83 0.99 0.91 0.005 0.020 0.89 0.042
Layer 26 Sand-Slime 5589.63 5589.07 5588.51 1.12 1.12 3978.64 4011.45 0.99 0.91 0.005 0.020 0.89 0.011
TOTAL: 0.05
Notes:
1 From on-site investigation (Tailings Data Analysis Report. MWH, 2015)
Effective Stress at
Midpoint of Layer
at t1, σ'i-mid1 (psf)
Effective Stress at
Bottom of Layer at
t1, σ'i-bott1 (psf)
Void Ratio
at t0, e0
Void Ratio
at t1, e1Material Type 1 Thickness of
Layer at t1, H (ft)Height above liner (ft)
Secondary
Compression
Index, Cα
Change in
Void Ratio
due to 1000
years of Creep, ∆e
Final Void Ratio
After 1,000
years, efinal
Settlement
due to 1000
years of Creep, δcreep
(ft)
2W4-C
CREEP SETTLEMENT
Soil Layer
Elevation at
Top of Layer
at t1, zi-top1 (ft
amsl)
Elevation at
Midpoint of
Layer at t1, zi-mid1 (ft amsl)
Elevation at
Bottom of Layer
at t1, zi-bott1 (ft
amsl)
Settlement_30Aug2015.xls Page 9 of 31
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Settlement Analyses
5626.29 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl) From cover deisgn grading plan AutoCAD file
From Appendix C - Radon Emanation Modeling (MWH, 2015)
3.50 Thickness of Water Storage/Rooting Zone (ft) From Appendix C - Radon Emanation Modeling (MWH, 2015)
4.00 Thickness of High Compaction Layer (ft) From Appendix C - Radon Emanation Modeling (MWH, 2015)
2.43 Thickness of Random/Platform Fill on on top of existing interim cover (ft) Calculated
1152.89 Additional Stress due to Final Cover Placement, ΔσFC (psf)Calculated
5604.20 Water surface elevation during CPT investigation (ft amsl) From on-site investigation (Tailings Data Analysis Report. MWH, 2015)
5604.2 Water surface elevation at t0 (ft amsl)Minimum of 5' below top of tailings or water surface elevation at time of CPT testing (2013).
5589.01 Water surface elevation at t1 (ft amsl)
5584.01 Water surface elevation at t2 (ft amsl)
FINAL COVER
PROFILE INFORMATION
0.50
Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after
placement (ft)
2W5-C
Settlement_30Aug2015.xls Page 10 of 31
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Settlement Analyses
Erosion Protection Layer Erosion Protection Layer 5625.03 5624.78 5624.53 0.50 41.02 NA NA NA NA NA NA NA NA
Rooting Zone Rooting Zone 5624.53 5622.78 5621.03 3.50 40.52 NA NA NA NA NA NA NA NA
High-Compaction Layer High-Compaction Layer 5621.03 5619.03 5617.03 4.00 37.02 NA NA NA NA NA NA NA NA
Platform Fill Platform Fill 5617.03 5615.82 5614.60 2.43 33.02 NA NA NA NA NA NA NA NA
Layer 1 Int. Cover 5614.60 5613.16 5611.73 2.88 30.59 NA NA NA NA NA NA NA NA
Layer 2 Sand-Slime 5611.73 5611.57 5611.42 0.30 27.72 NA NA NA NA NA NA NA NA
Layer 3 Sand 5611.42 5611.10 5610.79 0.63 27.41 NA NA NA NA NA NA NA NA
Layer 4 Sand-Slime 5610.79 5610.64 5610.49 0.30 26.78 NA NA NA NA NA NA NA NA
Layer 5 Sand 5610.49 5610.17 5609.85 0.64 26.48 NA NA NA NA NA NA NA NA
Layer 6 Sand-Slime 5609.85 5609.08 5608.30 1.55 25.84 NA NA NA NA NA NA NA NA
Layer 7 Sand 5608.30 5608.06 5607.82 0.48 24.29 NA NA NA NA NA NA NA NA
Layer 8 Sand-Slime 5607.82 5604.18 5600.53 7.29 23.81 NA NA NA NA NA NA NA NA
Layer 9 Sand 5600.53 5600.45 5600.37 0.16 16.52 NA NA NA NA NA NA NA NA
Layer 10 Sand-Slime 5600.37 5599.58 5598.79 1.58 16.36 NA NA NA NA NA NA NA NA
Layer 11 Slime 5598.79 5598.63 5598.47 0.32 14.78 NA NA NA NA NA NA NA NA
Layer 12 Sand-Slime 5598.47 5596.49 5594.51 3.96 14.46 NA NA NA NA NA NA NA NA
Layer 13 Slime 5594.51 5594.12 5593.72 0.79 10.50 NA NA NA NA NA NA NA NA
Layer 14 Sand-Slime 5593.72 5593.48 5593.25 0.47 9.71 NA NA NA NA NA NA NA NA
Layer 15 Slime 5593.25 5593.17 5593.08 0.16 9.24 NA NA NA NA NA NA NA NA
Layer 16 Sand-Slime 5593.08 5592.29 5591.50 1.58 9.07 NA NA NA NA NA NA NA NA
Layer 17 Slime 5591.50 5591.34 5591.18 0.32 7.49 NA NA NA NA NA NA NA NA
Layer 18 Sand-Slime 5591.18 5589.29 5587.39 3.79 7.17 4236.82 4375.75 0.99 0.92 0.005 0.020 0.90 0.039
Layer 19 Slime 5587.39 5587.23 5587.07 0.32 3.38 4384.12 4392.49 1.29 1.21 0.006 0.023 1.19 0.003
Layer 20 Sand 5587.07 5586.67 5586.27 0.80 3.06 4417.53 4442.57 0.74 0.70 0.002 0.010 0.69 0.005
Layer 21 Sand-Slime 5586.27 5586.11 5585.95 0.32 2.26 4451.90 4461.24 0.99 0.92 0.005 0.020 0.90 0.003
Layer 22 Sand 5585.95 5585.79 5585.63 0.32 1.94 4471.31 4481.39 0.74 0.70 0.002 0.010 0.69 0.002
Layer 23 Sand-Slime 5585.63 5584.82 5584.01 1.62 1.62 4528.63 4575.86 0.99 0.92 0.005 0.020 0.90 0.016
TOTAL: 0.07
Notes:
1 From on-site investigation (Tailings Data Analysis Report. MWH, 2015)
Thickness of
Layer at t1, H (ft)Height above liner (ft)
Effective Stress at
Midpoint of Layer
at t1, σ'i-mid1 (psf)
Effective Stress at
Bottom of Layer at
t1, σ'i-bott1 (psf)
Void Ratio
at t0, e0Material Type 1
Secondary
Compression
Index, Cα
Change in
Void Ratio
due to 1000
years of Creep, ∆e
Final Void Ratio
After 1,000
years, efinal
Settlement
due to 1000
years of Creep, δcreep
(ft)
2W5-C
CREEP SETTLEMENT
Soil Layer
Elevation at
Top of Layer
at t1, zi-top1 (ft
amsl)
Elevation at
Midpoint of
Layer at t1, zi-mid1 (ft amsl)
Elevation at
Bottom of Layer
at t1, zi-bott1 (ft
amsl)
Void Ratio
at t1, e1
Settlement_30Aug2015.xls Page 11 of 31
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Settlement Analyses
5625.41 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl) From cover deisgn grading plan AutoCAD file
From Appendix C - Radon Emanation Modeling (MWH, 2015)
3.50 Thickness of Water Storage/Rooting Zone (ft) From Appendix C - Radon Emanation Modeling (MWH, 2015)
4.00 Thickness of High Compaction Layer (ft) From Appendix C - Radon Emanation Modeling (MWH, 2015)
1.56 Thickness of Random/Platform Fill on on top of existing interim cover (ft) Calculated
1065.26 Additional Stress due to Final Cover Placement, ΔσFC (psf)Calculated
5604.40 Water surface elevation during CPT investigation (ft amsl) From on-site investigation (Tailings Data Analysis Report. MWH, 2015)
5604.4 Water surface elevation at t0 (ft amsl)Minimum of 5' below top of tailings or water surface elevation at time of CPT testing (2013).
5588.59 Water surface elevation at t1 (ft amsl)
5583.59 Water surface elevation at t2 (ft amsl)
FINAL COVER
PROFILE INFORMATION
0.50
Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after
placement (ft)
2W6-S
Settlement_30Aug2015.xls Page 12 of 31
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Settlement Analyses
Erosion Protection Layer Erosion Protection Layer 5624.12 5623.87 5623.62 0.50 40.53 NA NA NA NA NA NA NA NA
Rooting Zone Rooting Zone 5623.62 5621.87 5620.12 3.50 40.03 NA NA NA NA NA NA NA NA
High-Compaction Layer High-Compaction Layer 5620.12 5618.12 5616.12 4.00 36.53 NA NA NA NA NA NA NA NA
Platform Fill Platform Fill 5616.12 5615.34 5614.56 1.56 32.53 NA NA NA NA NA NA NA NA
Layer 1 Int. Cover 5614.56 5613.11 5611.67 2.90 30.97 NA NA NA NA NA NA NA NA
Layer 2 Sand-Slime 5611.67 5611.44 5611.21 0.45 28.08 NA NA NA NA NA NA NA NA
Layer 3 Sand 5611.21 5611.13 5611.05 0.16 27.62 NA NA NA NA NA NA NA NA
Layer 4 Sand-Slime 5611.05 5610.67 5610.28 0.77 27.46 NA NA NA NA NA NA NA NA
Layer 5 Sand 5610.28 5610.04 5609.81 0.47 26.69 NA NA NA NA NA NA NA NA
Layer 6 Sand-Slime 5609.81 5608.87 5607.94 1.87 26.22 NA NA NA NA NA NA NA NA
Layer 7 Slime 5607.94 5607.78 5607.62 0.32 24.35 NA NA NA NA NA NA NA NA
Layer 8 Sand 5607.62 5607.47 5607.31 0.31 24.03 NA NA NA NA NA NA NA NA
Layer 9 Sand-Slime 5607.31 5606.60 5605.89 1.42 23.72 NA NA NA NA NA NA NA NA
Layer 10 Slime 5605.89 5605.73 5605.57 0.32 22.30 NA NA NA NA NA NA NA NA
Layer 11 Sand-Slime 5605.57 5605.33 5605.10 0.47 21.98 NA NA NA NA NA NA NA NA
Layer 12 Slime 5605.10 5604.78 5604.46 0.64 21.51 NA NA NA NA NA NA NA NA
Layer 13 Sand-Slime 5604.46 5604.15 5603.83 0.63 20.87 NA NA NA NA NA NA NA NA
Layer 14 Slime 5603.83 5603.59 5603.35 0.48 20.24 NA NA NA NA NA NA NA NA
Layer 15 Sand-Slime 5603.35 5603.27 5603.19 0.15 19.76 NA NA NA NA NA NA NA NA
Layer 16 Slime 5603.19 5602.00 5600.81 2.38 19.60 NA NA NA NA NA NA NA NA
Layer 17 Sand-Slime 5600.81 5600.57 5600.34 0.47 17.22 NA NA NA NA NA NA NA NA
Layer 18 Slime 5600.34 5600.26 5600.17 0.16 16.75 NA NA NA NA NA NA NA NA
Layer 19 Sand-Slime 5600.17 5600.10 5600.02 0.15 16.58 NA NA NA NA NA NA NA NA
Layer 20 Slime 5600.02 5599.62 5599.23 0.79 16.43 NA NA NA NA NA NA NA NA
Layer 21 Sand-Slime 5599.23 5598.67 5598.11 1.11 15.64 NA NA NA NA NA NA NA NA
Layer 22 Slime 5598.11 5597.72 5597.32 0.79 14.52 NA NA NA NA NA NA NA NA
Layer 23 Sand-Slime 5597.32 5596.53 5595.74 1.58 13.73 NA NA NA NA NA NA NA NA
Layer 24 Slime 5595.74 5595.50 5595.26 0.47 12.15 NA NA NA NA NA NA NA NA
Layer 25 Sand-Slime 5595.26 5595.10 5594.95 0.32 11.67 NA NA NA NA NA NA NA NA
Layer 26 Slime 5594.95 5594.87 5594.79 0.15 11.36 NA NA NA NA NA NA NA NA
Layer 27 Sand-Slime 5594.79 5592.42 5590.04 4.75 11.20 NA NA NA NA NA NA NA NA
Layer 28 Slime 5590.04 5589.96 5589.88 0.16 6.45 NA NA NA NA NA NA NA NA
Layer 29 Sand-Slime 5589.88 5588.45 5587.03 2.85 6.29 4212.55 4297.55 0.99 0.92 0.005 0.020 0.90 0.029
Layer 30 Sand 5587.03 5586.79 5586.55 0.48 3.44 4312.52 4327.48 0.74 0.70 0.002 0.010 0.69 0.003
Layer 31 Sand-Slime 5586.55 5585.07 5583.59 2.96 2.96 4414.03 4500.59 0.99 0.92 0.005 0.020 0.90 0.030
TOTAL: 0.06
Notes:
1 From on-site investigation (Tailings Data Analysis Report. MWH, 2015)
Effective Stress at
Midpoint of Layer
at t1, σ'i-mid1 (psf)
Effective Stress at
Bottom of Layer at
t1, σ'i-bott1 (psf)
Void Ratio
at t0, e0
Void Ratio
at t1, e1Material Type 1 Thickness of
Layer at t1, H (ft)Height above liner (ft)
Secondary
Compression
Index, Cα
Change in
Void Ratio
due to 1000
years of Creep, ∆e
Final Void Ratio
After 1,000
years, efinal
Settlement
due to 1000
years of Creep, δcreep
(ft)
2W6-S
CREEP SETTLEMENT
Soil Layer
Elevation at
Top of Layer
at t1, zi-top1 (ft
amsl)
Elevation at
Midpoint of
Layer at t1, zi-mid1 (ft amsl)
Elevation at
Bottom of Layer
at t1, zi-bott1 (ft
amsl)
Settlement_30Aug2015.xls Page 13 of 31
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Settlement Analyses
5626.65 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl) From cover deisgn grading plan AutoCAD file
From Appendix C - Radon Emanation Modeling (MWH, 2015)
3.50 Thickness of Water Storage/Rooting Zone (ft) From Appendix C - Radon Emanation Modeling (MWH, 2015)
4.00 Thickness of High Compaction Layer (ft) From Appendix C - Radon Emanation Modeling (MWH, 2015)
-0.95 Thickness of Random/Platform Fill on on top of existing interim cover (ft) Calculated
812.44 Additional Stress due to Final Cover Placement, ΔσFC (psf)Calculated
5613.10 Water surface elevation during CPT investigation (ft amsl) From on-site investigation (Tailings Data Analysis Report. MWH, 2015)
5611.5 Water surface elevation at t0 (ft amsl)Minimum of 5' below top of tailings or water surface elevation at time of CPT testing (2013).
5595.40 Water surface elevation at t1 (ft amsl)
5590.40 Water surface elevation at t2 (ft amsl)
FINAL COVER
PROFILE INFORMATION
0.50
Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after
placement (ft)
2W7-C
Settlement_30Aug2015.xls Page 14 of 31
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Settlement Analyses
Erosion Protection Layer Erosion Protection Layer 5625.48 5625.23 5624.98 0.50 35.08 NA NA NA NA NA NA NA NA
Rooting Zone Rooting Zone 5624.98 5623.23 5621.48 3.50 34.58 NA NA NA NA NA NA NA NA
High-Compaction Layer High-Compaction Layer 5621.48 5619.48 5617.48 4.00 31.08 NA NA NA NA NA NA NA NA
Platform Fill Platform Fill 5617.48 5617.95 5618.43 -0.95 27.08 NA NA NA NA NA NA NA NA
Layer 1 Int. Cover 5618.43 5616.97 5615.51 2.92 28.03 NA NA NA NA NA NA NA NA
Layer 2 Sand-Slime 5615.51 5614.27 5613.03 2.48 25.11 NA NA NA NA NA NA NA NA
Layer 3 Slime 5613.03 5612.94 5612.86 0.16 22.63 NA NA NA NA NA NA NA NA
Layer 4 Sand-Slime 5612.86 5612.00 5611.13 1.73 22.46 NA NA NA NA NA NA NA NA
Layer 5 Slime 5611.13 5611.05 5610.97 0.16 20.73 NA NA NA NA NA NA NA NA
Layer 6 Sand-Slime 5610.97 5610.26 5609.55 1.42 20.57 NA NA NA NA NA NA NA NA
Layer 7 Slime 5609.55 5609.47 5609.38 0.16 19.15 NA NA NA NA NA NA NA NA
Layer 8 Sand-Slime 5609.38 5609.31 5609.23 0.15 18.98 NA NA NA NA NA NA NA NA
Layer 9 Slime 5609.23 5609.15 5609.07 0.16 18.83 NA NA NA NA NA NA NA NA
Layer 10 Sand-Slime 5609.07 5605.59 5602.11 6.96 18.67 NA NA NA NA NA NA NA NA
Layer 11 Slime 5602.11 5601.79 5601.47 0.64 11.71 NA NA NA NA NA NA NA NA
Layer 12 Sand-Slime 5601.47 5601.39 5601.32 0.15 11.07 NA NA NA NA NA NA NA NA
Layer 13 Slime 5601.32 5601.16 5601.00 0.32 10.92 NA NA NA NA NA NA NA NA
Layer 14 Sand-Slime 5601.00 5600.37 5599.74 1.26 10.60 NA NA NA NA NA NA NA NA
Layer 15 Slime 5599.74 5599.65 5599.57 0.16 9.34 NA NA NA NA NA NA NA NA
Layer 16 Sand 5599.57 5599.49 5599.42 0.16 9.17 NA NA NA NA NA NA NA NA
Layer 17 Sand-Slime 5599.42 5599.33 5599.25 0.16 9.02 NA NA NA NA NA NA NA NA
Layer 18 Slime 5599.25 5598.94 5598.63 0.63 8.85 NA NA NA NA NA NA NA NA
Layer 19 Sand-Slime 5598.63 5598.23 5597.84 0.79 8.23 NA NA NA NA NA NA NA NA
Layer 20 Slime 5597.84 5597.36 5596.88 0.95 7.44 NA NA NA NA NA NA NA NA
Layer 21 Sand-Slime 5596.88 5596.73 5596.57 0.31 6.48 NA NA NA NA NA NA NA NA
Layer 22 Slime 5596.57 5596.49 5596.41 0.16 6.17 NA NA NA NA NA NA NA NA
Layer 23 Sand-Slime 5596.41 5596.17 5595.94 0.47 6.01 NA NA NA NA NA NA NA NA
Layer 24 Slime 5595.94 5595.86 5595.78 0.15 5.54 NA NA NA NA NA NA NA NA
Layer 25 Sand-Slime 5595.78 5595.39 5594.99 0.79 5.38 3592.85 3626.66 0.99 0.91 0.005 0.020 0.89 0.008
Layer 26 Slime 5594.99 5594.68 5594.36 0.64 4.59 3643.40 3660.14 1.29 1.20 0.006 0.023 1.18 0.007
Layer 27 Sand-Slime 5594.36 5594.28 5594.20 0.15 3.96 3664.66 3669.19 0.99 0.91 0.005 0.020 0.89 0.002
Layer 28 Slime 5594.20 5593.96 5593.72 0.48 3.80 3681.87 3694.55 1.29 1.21 0.006 0.023 1.18 0.005
Layer 29 Sand-Slime 5593.72 5593.49 5593.25 0.47 3.32 3708.41 3722.27 0.99 0.92 0.005 0.020 0.90 0.005
Layer 30 Slime 5593.25 5593.17 5593.09 0.15 2.85 3726.33 3730.39 1.29 1.21 0.006 0.023 1.18 0.002
Layer 31 Sand-Slime 5593.09 5592.54 5591.98 1.11 2.69 3762.92 3795.44 0.99 0.92 0.005 0.020 0.90 0.011
Layer 32 Slime 5591.98 5591.75 5591.51 0.47 1.58 3807.87 3820.30 1.29 1.21 0.006 0.023 1.19 0.005
Layer 33 Sand-Slime 5591.51 5590.96 5590.40 1.11 1.11 3852.83 3885.36 0.99 0.92 0.005 0.020 0.90 0.011
TOTAL: 0.06
Notes:
1 From on-site investigation (Tailings Data Analysis Report. MWH, 2015)
Effective Stress at
Midpoint of Layer
at t1, σ'i-mid1 (psf)
Effective Stress at
Bottom of Layer at
t1, σ'i-bott1 (psf)
Void Ratio
at t0, e0
Void Ratio
at t1, e1Material Type 1 Thickness of
Layer at t1, H (ft)Height above liner (ft)
Secondary
Compression
Index, Cα
Change in
Void Ratio
due to 1000
years of Creep, ∆e
Final Void Ratio
After 1,000
years, efinal
Settlement
due to 1000
years of Creep, δcreep
(ft)
2W7-C
CREEP SETTLEMENT
Soil Layer
Elevation at
Top of Layer
at t1, zi-top1 (ft
amsl)
Elevation at
Midpoint of
Layer at t1, zi-mid1 (ft amsl)
Elevation at
Bottom of Layer
at t1, zi-bott1 (ft
amsl)
Settlement_30Aug2015.xls Page 15 of 31
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Settlement Analyses
5630.46 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl) From cover deisgn grading plan AutoCAD file
From Appendix C - Radon Emanation Modeling (MWH, 2015)
3.50 Thickness of Water Storage/Rooting Zone (ft) From Appendix C - Radon Emanation Modeling (MWH, 2015)
4.00 Thickness of High Compaction Layer (ft) From Appendix C - Radon Emanation Modeling (MWH, 2015)
2.51 Thickness of Random/Platform Fill on on top of existing interim cover (ft) Calculated
1160.95 Additional Stress due to Final Cover Placement, ΔσFC (psf)Calculated
5610.80 Water surface elevation during CPT investigation (ft amsl) From on-site investigation (Tailings Data Analysis Report. MWH, 2015)
5610.8 Water surface elevation at t0 (ft amsl)Minimum of 5' below top of tailings or water surface elevation at time of CPT testing (2013).
5595.46 Water surface elevation at t1 (ft amsl)
5590.46 Water surface elevation at t2 (ft amsl)
FINAL COVER
PROFILE INFORMATION
0.50
Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after
placement (ft)
2E1
Settlement_30Aug2015.xls Page 16 of 31
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Settlement Analyses
Erosion Protection Layer Erosion Protection Layer 5629.16 5628.91 5628.66 0.50 38.70 NA NA NA NA NA NA NA NA
Rooting Zone Rooting Zone 5628.66 5626.91 5625.16 3.50 38.20 NA NA NA NA NA NA NA NA
High-Compaction Layer High-Compaction Layer 5625.16 5623.16 5621.16 4.00 34.70 NA NA NA NA NA NA NA NA
Platform Fill Platform Fill 5621.16 5619.91 5618.65 2.51 30.70 NA NA NA NA NA NA NA NA
Layer 1 Int. Cover 5618.65 5617.21 5615.76 2.89 28.19 NA NA NA NA NA NA NA NA
Layer 2 Sand 5615.76 5615.45 5615.13 0.63 25.30 NA NA NA NA NA NA NA NA
Layer 3 Sand-Slime 5615.13 5614.91 5614.68 0.46 24.67 NA NA NA NA NA NA NA NA
Layer 4 Slime 5614.68 5614.52 5614.37 0.31 24.22 NA NA NA NA NA NA NA NA
Layer 5 Sand-Slime 5614.37 5614.21 5614.06 0.31 23.91 NA NA NA NA NA NA NA NA
Layer 6 Sand 5614.06 5613.66 5613.27 0.79 23.60 NA NA NA NA NA NA NA NA
Layer 7 Sand-Slime 5613.27 5612.88 5612.49 0.78 22.81 NA NA NA NA NA NA NA NA
Layer 8 Sand 5612.49 5612.33 5612.18 0.31 22.03 NA NA NA NA NA NA NA NA
Layer 9 Sand-Slime 5612.18 5609.66 5607.14 5.04 21.72 NA NA NA NA NA NA NA NA
Layer 10 Slime 5607.14 5607.05 5606.97 0.16 16.68 NA NA NA NA NA NA NA NA
Layer 11 Sand-Slime 5606.97 5606.90 5606.82 0.15 16.51 NA NA NA NA NA NA NA NA
Layer 12 Slime 5606.82 5606.74 5606.66 0.16 16.36 NA NA NA NA NA NA NA NA
Layer 13 Sand-Slime 5606.66 5605.95 5605.24 1.41 16.20 NA NA NA NA NA NA NA NA
Layer 14 Slime 5605.24 5605.16 5605.08 0.16 14.78 NA NA NA NA NA NA NA NA
Layer 15 Sand-Slime 5605.08 5604.93 5604.77 0.31 14.62 NA NA NA NA NA NA NA NA
Layer 16 Slime 5604.77 5604.69 5604.61 0.16 14.31 NA NA NA NA NA NA NA NA
Layer 17 Sand-Slime 5604.61 5601.06 5597.52 7.09 14.15 NA NA NA NA NA NA NA NA
Layer 18 Slime 5597.52 5597.36 5597.20 0.32 7.06 NA NA NA NA NA NA NA NA
Layer 19 Sand-Slime 5597.20 5595.63 5594.05 3.15 6.74 3973.89 4089.75 0.99 0.91 0.005 0.020 0.89 0.032
Layer 20 Slime 5594.05 5593.89 5593.73 0.32 3.59 4098.12 4106.49 1.29 1.20 0.006 0.023 1.18 0.003
Layer 21 Sand-Slime 5593.73 5593.58 5593.43 0.31 3.27 4115.54 4124.60 0.99 0.91 0.005 0.020 0.89 0.003
Layer 22 Slime 5593.43 5593.27 5593.11 0.32 2.97 4132.97 4141.34 1.29 1.20 0.006 0.023 1.18 0.003
Layer 23 Sand-Slime 5593.11 5592.47 5591.84 1.27 2.65 4178.67 4216.01 0.99 0.91 0.005 0.020 0.89 0.013
Layer 24 Sand-Slime 5591.84 5591.15 5590.46 1.38 1.38 4256.46 4296.91 0.99 0.91 0.005 0.020 0.89 0.014
TOTAL: 0.07
Notes:
1 From on-site investigation (Tailings Data Analysis Report. MWH, 2015)
Effective Stress at
Midpoint of Layer
at t1, σ'i-mid1 (psf)
Effective Stress at
Bottom of Layer at
t1, σ'i-bott1 (psf)
Void Ratio
at t0, e0
Void Ratio
at t1, e1Material Type 1 Thickness of
Layer at t1, H (ft)Height above liner (ft)
Secondary
Compression
Index, Cα
Change in
Void Ratio
due to 1000
years of Creep, ∆e
Final Void Ratio
After 1,000
years, efinal
Settlement
due to 1000
years of Creep, δcreep
(ft)
2E1
CREEP SETTLEMENT
Soil Layer
Elevation at
Top of Layer
at t1, zi-top1 (ft
amsl)
Elevation at
Midpoint of
Layer at t1, zi-mid1 (ft amsl)
Elevation at
Bottom of Layer
at t1, zi-bott1 (ft
amsl)
Settlement_30Aug2015.xls Page 17 of 31
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Settlement Analyses
5620.47 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl) From cover deisgn grading plan AutoCAD file
From Appendix C - Radon Emanation Modeling (MWH, 2015)
3.50 Thickness of Water Storage/Rooting Zone (ft) From Appendix C - Radon Emanation Modeling (MWH, 2015)
3.50 Thickness of High Compaction Layer (ft) From Appendix C - Radon Emanation Modeling (MWH, 2015)
0.41 Thickness of Random/Platform Fill on on top of existing interim cover (ft) Calculated
887.10 Additional Stress due to Final Cover Placement, ΔσFC (psf)Calculated
5608.00 Water surface elevation during CPT investigation (ft amsl) From on-site investigation (Tailings Data Analysis Report. MWH, 2015)
5604.4 Water surface elevation at t0 (ft amsl)Minimum of 5' below top of tailings or water surface elevation at time of CPT testing (2013).
5595.59 Water surface elevation at t1 (ft amsl)
5590.59 Water surface elevation at t2 (ft amsl)
Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after
placement (ft)
FINAL COVER
3-1S
PROFILE INFORMATION
0.50
Settlement_30Aug2015.xls Page 18 of 31
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Settlement Analyses
Erosion Protection Layer Erosion Protection Layer 5619.59 5619.34 5619.09 0.50 29.00 NA NA NA NA NA NA NA NA
Rooting Zone Rooting Zone 5619.09 5617.34 5615.59 3.50 28.50 NA NA NA NA NA NA NA NA
High-Compaction Layer High-Compaction Layer 5615.59 5613.84 5612.09 3.50 25.00 NA NA NA NA NA NA NA NA
Platform Fill Platform Fill 5612.09 5611.89 5611.68 0.41 21.50 NA NA NA NA NA NA NA NA
Layer 1 Int. Cover 5611.68 5610.23 5608.77 2.91 21.09 NA NA NA NA NA NA NA NA
Layer 2 Slime 5608.77 5608.08 5607.39 1.38 18.18 NA NA NA NA NA NA NA NA
Layer 3 Sand-Slime 5607.39 5607.31 5607.23 0.16 16.80 NA NA NA NA NA NA NA NA
Layer 4 Sand 5607.23 5605.95 5604.68 2.55 16.64 NA NA NA NA NA NA NA NA
Layer 5 Sand-Slime 5604.68 5604.44 5604.20 0.48 14.09 NA NA NA NA NA NA NA NA
Layer 6 Sand 5604.20 5603.96 5603.72 0.48 13.61 NA NA NA NA NA NA NA NA
Layer 7 Sand-Slime 5603.72 5603.32 5602.93 0.79 13.13 NA NA NA NA NA NA NA NA
Layer 8 Sand 5602.93 5602.69 5602.45 0.48 12.34 NA NA NA NA NA NA NA NA
Layer 9 Sand-Slime 5602.45 5602.29 5602.13 0.32 11.86 NA NA NA NA NA NA NA NA
Layer 10 Slime 5602.13 5602.05 5601.97 0.15 11.54 NA NA NA NA NA NA NA NA
Layer 11 Sand-Slime 5601.97 5600.86 5599.76 2.22 11.38 NA NA NA NA NA NA NA NA
Layer 12 Sand 5599.76 5599.68 5599.60 0.16 9.17 NA NA NA NA NA NA NA NA
Layer 13 Sand-Slime 5599.60 5597.70 5595.80 3.80 9.01 NA NA NA NA NA NA NA NA
Layer 14 Slime 5595.80 5595.73 5595.65 0.15 5.21 NA NA NA NA NA NA NA NA
Layer 15 Sand-Slime 5595.65 5595.10 5594.54 1.11 5.06 2874.54 2907.07 0.99 0.91 0.005 0.020 0.89 0.011
Layer 16 Sand-Slime 5594.54 5592.57 5590.59 3.95 3.95 3022.76 3138.45 0.99 0.92 0.005 0.020 0.90 0.040
TOTAL: 0.05
Notes:1 From on-site investigation (Tailings Data Analysis Report. MWH, 2015)
Material Type 1
Effective Stress at
Midpoint of Layer
at t1, σ'i-mid1 (psf)
Thickness of
Layer at t1, H (ft)Height above liner (ft)
Effective Stress at
Bottom of Layer at
t1, σ'i-bott1 (psf)
Void Ratio
at t0, e0
Void Ratio
at t1, e1
Secondary
Compression
Index, Cα
Change in
Void Ratio
due to 1000
years of Creep, ∆e
Final Void Ratio
After 1,000
years, efinal
Settlement
due to 1000
years of Creep, δcreep
(ft)
3-1S
CREEP SETTLEMENT
Soil Layer
Elevation at
Top of Layer
at t1, zi-top1 (ft
amsl)
Elevation at
Midpoint of
Layer at t1, zi-mid1 (ft amsl)
Elevation at
Bottom of Layer
at t1, zi-bott1 (ft
amsl)
Settlement_30Aug2015.xls Page 19 of 31
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Settlement Analyses
5621.51 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl) From cover deisgn grading plan AutoCAD file
From Appendix C - Radon Emanation Modeling (MWH, 2015)
3.50 Thickness of Water Storage/Rooting Zone (ft) From Appendix C - Radon Emanation Modeling (MWH, 2015)
3.50 Thickness of High Compaction Layer (ft) From Appendix C - Radon Emanation Modeling (MWH, 2015)
3.19 Thickness of Random/Platform Fill on on top of existing interim cover (ft) Calculated
1167.12 Additional Stress due to Final Cover Placement, ΔσFC (psf)Calculated
5605.30 Water surface elevation during CPT investigation (ft amsl) From on-site investigation (Tailings Data Analysis Report. MWH, 2015)
5602.7 Water surface elevation at t0 (ft amsl)Minimum of 5' below top of tailings or water surface elevation at time of CPT testing (2013).
5591.64 Water surface elevation at t1 (ft amsl)
5586.64 Water surface elevation at t2 (ft amsl)
PROFILE INFORMATION
0.50
Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after
placement (ft)
FINAL COVER
3-2C
Settlement_30Aug2015.xls Page 20 of 31
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Settlement Analyses
Erosion Protection Layer Erosion Protection Layer 5620.32 5620.07 5619.82 0.50 33.68 NA NA NA NA NA NA NA NA
Rooting Zone Rooting Zone 5619.82 5618.07 5616.32 3.50 33.18 NA NA NA NA NA NA NA NA
High-Compaction Layer High-Compaction Layer 5616.32 5614.57 5612.82 3.50 29.68 NA NA NA NA NA NA NA NA
Platform Fill Platform Fill 5612.82 5611.23 5609.63 3.19 26.18 NA NA NA NA NA NA NA NA
Layer 1 Int. Cover 5609.63 5608.19 5606.76 2.88 22.99 NA NA NA NA NA NA NA NA
Layer 2 Sand 5606.76 5606.67 5606.59 0.16 20.12 NA NA NA NA NA NA NA NA
Layer 3 Sand-Slime 5606.59 5606.52 5606.45 0.15 19.95 NA NA NA NA NA NA NA NA
Layer 4 Slime 5606.45 5605.99 5605.53 0.92 19.81 NA NA NA NA NA NA NA NA
Layer 5 Sand-Slime 5605.53 5605.14 5604.76 0.77 18.89 NA NA NA NA NA NA NA NA
Layer 6 Slime 5604.76 5604.60 5604.45 0.31 18.12 NA NA NA NA NA NA NA NA
Layer 7 Sand-Slime 5604.45 5604.30 5604.15 0.30 17.81 NA NA NA NA NA NA NA NA
Layer 8 Slime 5604.15 5603.83 5603.52 0.62 17.51 NA NA NA NA NA NA NA NA
Layer 9 Sand-Slime 5603.52 5600.22 5596.93 6.59 16.88 NA NA NA NA NA NA NA NA
Layer 10 Slime 5596.93 5596.85 5596.78 0.15 10.29 NA NA NA NA NA NA NA NA
Layer 11 Sand-Slime 5596.78 5596.54 5596.30 0.48 10.14 NA NA NA NA NA NA NA NA
Layer 12 Slime 5596.30 5595.83 5595.36 0.94 9.66 NA NA NA NA NA NA NA NA
Layer 13 Sand-Slime 5595.36 5594.65 5593.94 1.42 8.72 NA NA NA NA NA NA NA NA
Layer 14 Slime 5593.94 5593.86 5593.79 0.15 7.30 NA NA NA NA NA NA NA NA
Layer 15 Sand-Slime 5593.79 5593.24 5592.69 1.10 7.15 NA NA NA NA NA NA NA NA
Layer 16 Slime 5592.69 5592.53 5592.37 0.32 6.05 NA NA NA NA NA NA NA NA
Layer 17 Sand-Slime 5592.37 5591.98 5591.59 0.79 5.73 NA NA NA NA NA NA NA NA
Layer 18 Slime 5591.59 5591.43 5591.27 0.32 4.95 3371.80 3380.17 1.29 1.19 0.006 0.023 1.17 0.003
Layer 19 Sand-Slime 5591.27 5591.03 5590.80 0.47 4.63 3394.03 3407.89 0.99 0.90 0.005 0.020 0.88 0.005
Layer 20 Slime 5590.80 5590.72 5590.65 0.15 4.16 3411.95 3416.00 1.29 1.19 0.006 0.023 1.17 0.002
Layer 21 Sand-Slime 5590.65 5590.49 5590.33 0.32 4.01 3425.34 3434.67 0.99 0.90 0.005 0.020 0.88 0.003
Layer 22 Sand-Slime 5590.33 5588.49 5586.64 3.69 3.69 3543.29 3651.91 0.99 0.91 0.005 0.020 0.89 0.038
TOTAL: 0.05
Notes:
1 From on-site investigation (Tailings Data Analysis Report. MWH, 2015)
Effective Stress at
Midpoint of Layer
at t1, σ'i-mid1 (psf)
Effective Stress at
Bottom of Layer at
t1, σ'i-bott1 (psf)
Void Ratio
at t0, e0
Void Ratio
at t1, e1Material Type 1 Thickness of
Layer at t1, H (ft)Height above liner (ft)
Secondary
Compression
Index, Cα
Change in
Void Ratio
due to 1000
years of Creep, ∆e
Final Void Ratio
After 1,000
years, efinal
Settlement
due to 1000
years of Creep, δcreep
(ft)
3-2C
CREEP SETTLEMENT
Soil Layer
Elevation at
Top of Layer
at t1, zi-top1 (ft
amsl)
Elevation at
Midpoint of
Layer at t1, zi-mid1 (ft amsl)
Elevation at
Bottom of Layer
at t1, zi-bott1 (ft
amsl)
Settlement_30Aug2015.xls Page 21 of 31
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Settlement Analyses
5620.49 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl) From cover deisgn grading plan AutoCAD file
From Appendix C - Radon Emanation Modeling (MWH, 2015)
3.50 Thickness of Water Storage/Rooting Zone (ft) From Appendix C - Radon Emanation Modeling (MWH, 2015)
3.50 Thickness of High Compaction Layer (ft) From Appendix C - Radon Emanation Modeling (MWH, 2015)
3.36 Thickness of Random/Platform Fill on on top of existing interim cover (ft) Calculated
1184.24 Additional Stress due to Final Cover Placement, ΔσFC (psf)Calculated
5605.60 Water surface elevation during CPT investigation (ft amsl) From on-site investigation (Tailings Data Analysis Report. MWH, 2015)
5601.5 Water surface elevation at t0 (ft amsl)Minimum of 5' below top of tailings or water surface elevation at time of CPT testing (2013).
5582.14 Water surface elevation at t1 (ft amsl)
5577.14 Water surface elevation at t2 (ft amsl)
3-3S
FINAL COVER
0.50
Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after
placement (ft)
PROFILE INFORMATION
Settlement_30Aug2015.xls Page 22 of 31
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Settlement Analyses
Erosion Protection Layer Erosion Protection Layer 5619.02 5618.77 5618.52 0.50 41.88 NA NA NA NA NA NA NA NA
Rooting Zone Rooting Zone 5618.52 5616.77 5615.02 3.50 41.38 NA NA NA NA NA NA NA NA
High-Compaction Layer High-Compaction Layer 5615.02 5613.27 5611.52 3.50 37.88 NA NA NA NA NA NA NA NA
Platform Fill Platform Fill 5611.52 5609.84 5608.16 3.36 34.38 NA NA NA NA NA NA NA NA
Layer 1 Int. Cover 5608.16 5606.72 5605.29 2.88 31.02 NA NA NA NA NA NA NA NA
Layer 2 Sand 5605.29 5604.89 5604.50 0.78 28.15 NA NA NA NA NA NA NA NA
Layer 3 Sand-Slime 5604.50 5604.27 5604.04 0.47 27.36 NA NA NA NA NA NA NA NA
Layer 4 Sand 5604.04 5603.33 5602.62 1.42 26.90 NA NA NA NA NA NA NA NA
Layer 5 Sand-Slime 5602.62 5601.44 5600.27 2.34 25.48 NA NA NA NA NA NA NA NA
Layer 6 Slime 5600.27 5600.12 5599.96 0.32 23.13 NA NA NA NA NA NA NA NA
Layer 7 Sand-Slime 5599.96 5599.88 5599.80 0.15 22.82 NA NA NA NA NA NA NA NA
Layer 8 Slime 5599.80 5599.65 5599.49 0.32 22.66 NA NA NA NA NA NA NA NA
Layer 9 Sand-Slime 5599.49 5598.62 5597.76 1.73 22.35 NA NA NA NA NA NA NA NA
Layer 10 Slime 5597.76 5597.36 5596.97 0.78 20.62 NA NA NA NA NA NA NA NA
Layer 11 Sand-Slime 5596.97 5596.74 5596.50 0.47 19.83 NA NA NA NA NA NA NA NA
Layer 12 Slime 5596.50 5596.43 5596.35 0.15 19.36 NA NA NA NA NA NA NA NA
Layer 13 Sand-Slime 5596.35 5595.57 5594.78 1.57 19.21 NA NA NA NA NA NA NA NA
Layer 14 Slime 5594.78 5594.70 5594.62 0.16 17.64 NA NA NA NA NA NA NA NA
Layer 15 Sand-Slime 5594.62 5594.46 5594.30 0.32 17.48 NA NA NA NA NA NA NA NA
Layer 16 Slime 5594.30 5593.99 5593.68 0.62 17.16 NA NA NA NA NA NA NA NA
Layer 17 Sand-Slime 5593.68 5593.21 5592.73 0.95 16.54 NA NA NA NA NA NA NA NA
Layer 18 Slime 5592.73 5592.42 5592.11 0.62 15.59 NA NA NA NA NA NA NA NA
Layer 19 Sand-Slime 5592.11 5591.56 5591.01 1.10 14.97 NA NA NA NA NA NA NA NA
Layer 20 Slime 5591.01 5590.93 5590.86 0.15 13.87 NA NA NA NA NA NA NA NA
Layer 21 Sand-Slime 5590.86 5590.38 5589.91 0.95 13.72 NA NA NA NA NA NA NA NA
Layer 22 Slime 5589.91 5589.83 5589.75 0.15 12.77 NA NA NA NA NA NA NA NA
Layer 23 Sand-Slime 5589.75 5589.20 5588.65 1.10 12.61 NA NA NA NA NA NA NA NA
Layer 24 Sand 5588.65 5588.49 5588.33 0.32 11.51 NA NA NA NA NA NA NA NA
Layer 25 Sand-Slime 5588.33 5587.15 5585.97 2.36 11.19 NA NA NA NA NA NA NA NA
Layer 26 Sand 5585.97 5585.73 5585.49 0.48 8.83 NA NA NA NA NA NA NA NA
Layer 27 Sand-Slime 5585.49 5581.32 5577.14 8.35 8.35 4428.47 4674.84 0.99 0.90 0.005 0.020 0.88 0.086
TOTAL: 0.09
Notes:1 From on-site investigation (Tailings Data Analysis Report. MWH, 2015)
3-3S
CREEP SETTLEMENT
Soil Layer Material Type
1
Elevation at
Top of Layer
at t1, zi-top1 (ft
amsl)
Elevation at
Midpoint of
Layer at t1, zi-mid1 (ft amsl)
Elevation at
Bottom of Layer
at t1, zi-bott1 (ft
amsl)
Final Void Ratio
After 1,000
years, efinal
Settlement
due to 1000
years of Creep, δcreep
(ft)
Thickness of
Layer at t1, H (ft)Height above liner (ft)
Secondary
Compression
Index, Cα
Change in
Void Ratio
due to 1000
years of Creep, ∆e
Effective Stress at
Midpoint of Layer
at t1, σ'i-mid1 (psf)
Effective Stress at
Bottom of Layer at
t1, σ'i-bott1 (psf)
Void Ratio
at t0, e0
Void Ratio
at t1, e1
Settlement_30Aug2015.xls Page 23 of 31
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Settlement Analyses
5623.36 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl) From cover deisgn grading plan AutoCAD file
From Appendix C - Radon Emanation Modeling (MWH, 2015)
3.50 Thickness of Water Storage/Rooting Zone (ft) From Appendix C - Radon Emanation Modeling (MWH, 2015)
3.50 Thickness of High Compaction Layer (ft) From Appendix C - Radon Emanation Modeling (MWH, 2015)
7.16 Thickness of Random/Platform Fill on on top of existing interim cover (ft) Calculated
1567.00 Additional Stress due to Final Cover Placement, ΔσFC (psf)Calculated
5606.00 Water surface elevation during CPT investigation (ft amsl) From on-site investigation (Tailings Data Analysis Report. MWH, 2015)
5600.6 Water surface elevation at t0 (ft amsl)Minimum of 5' below top of tailings or water surface elevation at time of CPT testing (2013).
5583.71 Water surface elevation at t1 (ft amsl)
5578.71 Water surface elevation at t2 (ft amsl)
Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after
placement (ft)
FINAL COVER
3-4N
PROFILE INFORMATION
0.50
Settlement_30Aug2015.xls Page 24 of 31
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Settlement Analyses
Erosion Protection Layer Erosion Protection Layer 5621.80 5621.55 5621.30 0.50 43.09 NA NA NA NA NA NA NA NA
Rooting Zone Rooting Zone 5621.30 5619.55 5617.80 3.50 42.59 NA NA NA NA NA NA NA NA
High-Compaction Layer High-Compaction Layer 5617.80 5616.05 5614.30 3.50 39.09 NA NA NA NA NA NA NA NA
Platform Fill Platform Fill 5614.30 5610.72 5607.14 7.16 35.59 NA NA NA NA NA NA NA NA
Layer 1 Int. Cover 5607.14 5605.71 5604.29 2.86 28.43 NA NA NA NA NA NA NA NA
Layer 2 Sand 5604.29 5603.35 5602.41 1.88 25.58 NA NA NA NA NA NA NA NA
Layer 3 Sand-Slime 5602.41 5600.24 5598.07 4.33 23.70 NA NA NA NA NA NA NA NA
Layer 4 Slime 5598.07 5597.29 5596.52 1.56 19.36 NA NA NA NA NA NA NA NA
Layer 5 Sand-Slime 5596.52 5596.36 5596.20 0.31 17.81 NA NA NA NA NA NA NA NA
Layer 6 Sand 5596.20 5595.88 5595.56 0.64 17.49 NA NA NA NA NA NA NA NA
Layer 7 Slime 5595.56 5595.49 5595.41 0.15 16.85 NA NA NA NA NA NA NA NA
Layer 8 Sand-Slime 5595.41 5595.25 5595.10 0.31 16.70 NA NA NA NA NA NA NA NA
Layer 9 Sand 5595.10 5595.02 5594.94 0.16 16.39 NA NA NA NA NA NA NA NA
Layer 10 Slime 5594.94 5594.86 5594.78 0.16 16.23 NA NA NA NA NA NA NA NA
Layer 11 Sand-Slime 5594.78 5594.70 5594.63 0.15 16.07 NA NA NA NA NA NA NA NA
Layer 12 Slime 5594.63 5594.24 5593.85 0.78 15.92 NA NA NA NA NA NA NA NA
Layer 13 Sand-Slime 5593.85 5593.69 5593.53 0.31 15.14 NA NA NA NA NA NA NA NA
Layer 14 Slime 5593.53 5593.38 5593.22 0.31 14.82 NA NA NA NA NA NA NA NA
Layer 15 Sand-Slime 5593.22 5590.18 5587.14 6.08 14.51 NA NA NA NA NA NA NA NA
Layer 16 Sand-Slime 5587.14 5582.92 5578.71 8.43 8.43 4510.59 4760.35 0.99 0.89 0.005 0.020 0.88 0.087
TOTAL: 0.09
Notes:1 From on-site investigation (Tailings Data Analysis Report. MWH, 2015)
Material Type 1
Effective Stress at
Midpoint of Layer
at t1, σ'i-mid1 (psf)
Thickness of
Layer at t1, H (ft)Height above liner (ft)
Effective Stress at
Bottom of Layer at
t1, σ'i-bott1 (psf)
Void Ratio
at t0, e0
Void Ratio
at t1, e1
Secondary
Compression
Index, Cα
Change in
Void Ratio
due to 1000
years of Creep, ∆e
Final Void Ratio
After 1,000
years, efinal
Settlement
due to 1000
years of Creep, δcreep
(ft)
3-4N
CREEP SETTLEMENT
Soil Layer
Elevation at
Top of Layer
at t1, zi-top1 (ft
amsl)
Elevation at
Midpoint of
Layer at t1, zi-mid1 (ft amsl)
Elevation at
Bottom of Layer
at t1, zi-bott1 (ft
amsl)
Settlement_30Aug2015.xls Page 25 of 31
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Settlement Analyses
5623.62 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl) From cover deisgn grading plan AutoCAD file
From Appendix C - Radon Emanation Modeling (MWH, 2015)
3.50 Thickness of Water Storage/Rooting Zone (ft) From Appendix C - Radon Emanation Modeling (MWH, 2015)
3.50 Thickness of High Compaction Layer (ft) From Appendix C - Radon Emanation Modeling (MWH, 2015)
8.68 Thickness of Random/Platform Fill on on top of existing interim cover (ft) Calculated
1720.10 Additional Stress due to Final Cover Placement, ΔσFC (psf)Calculated
5604.20 Water surface elevation during CPT investigation (ft amsl) From on-site investigation (Tailings Data Analysis Report. MWH, 2015)
5599.3 Water surface elevation at t0 (ft amsl)Minimum of 5' below top of tailings or water surface elevation at time of CPT testing (2013).
5590.44 Water surface elevation at t1 (ft amsl)
5585.44 Water surface elevation at t2 (ft amsl)
PROFILE INFORMATION
0.50
Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after
placement (ft)
FINAL COVER
3-6N
Settlement_30Aug2015.xls Page 26 of 31
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Settlement Analyses
Erosion Protection Layer Erosion Protection Layer 5622.28 5622.03 5621.78 0.50 36.84 NA NA NA NA NA NA NA NA
Rooting Zone Rooting Zone 5621.78 5620.03 5618.28 3.50 36.34 NA NA NA NA NA NA NA NA
High-Compaction Layer High-Compaction Layer 5618.28 5616.53 5614.78 3.50 32.84 NA NA NA NA NA NA NA NA
Platform Fill Platform Fill 5614.78 5610.44 5606.10 8.68 29.34 NA NA NA NA NA NA NA NA
Layer 1 Int. Cover 5606.10 5604.67 5603.25 2.85 20.66 NA NA NA NA NA NA NA NA
Layer 2 Sand-Slime 5603.25 5603.18 5603.11 0.14 17.81 NA NA NA NA NA NA NA NA
Layer 3 Sand 5603.11 5602.95 5602.79 0.31 17.67 NA NA NA NA NA NA NA NA
Layer 4 Sand-Slime 5602.79 5602.64 5602.49 0.30 17.35 NA NA NA NA NA NA NA NA
Layer 5 Slime 5602.49 5602.19 5601.90 0.60 17.05 NA NA NA NA NA NA NA NA
Layer 6 Sand-Slime 5601.90 5601.52 5601.14 0.76 16.46 NA NA NA NA NA NA NA NA
Layer 7 Slime 5601.14 5600.91 5600.67 0.46 15.70 NA NA NA NA NA NA NA NA
Layer 8 Sand-Slime 5600.67 5600.45 5600.22 0.46 15.23 NA NA NA NA NA NA NA NA
Layer 9 Sand 5600.22 5600.14 5600.06 0.15 14.78 NA NA NA NA NA NA NA NA
Layer 10 Sand-Slime 5600.06 5599.91 5599.75 0.31 14.62 NA NA NA NA NA NA NA NA
Layer 11 Slime 5599.75 5599.60 5599.44 0.31 14.31 NA NA NA NA NA NA NA NA
Layer 12 Sand-Slime 5599.44 5599.29 5599.13 0.31 14.00 NA NA NA NA NA NA NA NA
Layer 13 Slime 5599.13 5598.75 5598.36 0.77 13.69 NA NA NA NA NA NA NA NA
Layer 14 Sand-Slime 5598.36 5598.20 5598.05 0.31 12.92 NA NA NA NA NA NA NA NA
Layer 15 Slime 5598.05 5597.43 5596.81 1.24 12.61 NA NA NA NA NA NA NA NA
Layer 16 Sand-Slime 5596.81 5596.66 5596.50 0.31 11.37 NA NA NA NA NA NA NA NA
Layer 17 Slime 5596.50 5594.02 5591.54 4.96 11.06 NA NA NA NA NA NA NA NA
Layer 18 Sand-Slime 5591.54 5590.61 5589.67 1.87 6.10 3584.42 3667.28 0.99 0.88 0.005 0.020 0.86 0.019
Layer 19 Slime 5589.67 5589.21 5588.74 0.94 4.23 3692.39 3717.50 1.29 1.17 0.006 0.023 1.15 0.010
Layer 20 Sand-Slime 5588.74 5587.09 5585.44 3.30 3.30 3815.37 3913.24 0.99 0.89 0.005 0.020 0.87 0.034
TOTAL: 0.06
Notes:
1 From on-site investigation (Tailings Data Analysis Report. MWH, 2015)
Effective Stress at
Midpoint of Layer
at t1, σ'i-mid1 (psf)
Effective Stress at
Bottom of Layer at
t1, σ'i-bott1 (psf)
Void Ratio
at t0, e0
Void Ratio
at t1, e1Material Type 1 Thickness of
Layer at t1, H (ft)Height above liner (ft)
Secondary
Compression
Index, Cα
Change in
Void Ratio
due to 1000
years of Creep, ∆e
Final Void Ratio
After 1,000
years, efinal
Settlement
due to 1000
years of Creep, δcreep
(ft)
3-6N
CREEP SETTLEMENT
Soil Layer
Elevation at
Top of Layer
at t1, zi-top1 (ft
amsl)
Elevation at
Midpoint of
Layer at t1, zi-mid1 (ft amsl)
Elevation at
Bottom of Layer
at t1, zi-bott1 (ft
amsl)
Settlement_30Aug2015.xls Page 27 of 31
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Settlement Analyses
5623.82 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl) From cover deisgn grading plan AutoCAD file
From Appendix C - Radon Emanation Modeling (MWH, 2015)
3.50 Thickness of Water Storage/Rooting Zone (ft) From Appendix C - Radon Emanation Modeling (MWH, 2015)
3.50 Thickness of High Compaction Layer (ft) From Appendix C - Radon Emanation Modeling (MWH, 2015)
7.95 Thickness of Random/Platform Fill on on top of existing interim cover (ft) Calculated
1646.57 Additional Stress due to Final Cover Placement, ΔσFC (psf)Calculated
5604.90 Water surface elevation during CPT investigation (ft amsl)From on-site investigation (Tailings Data Analysis Report. MWH, 2015)
5600.3 Water surface elevation at t0 (ft amsl)Minimum of 5' below top of tailings or water surface elevation at time of CPT testing (2013).
5595.24 Water surface elevation at t1 (ft amsl)
5590.24 Water surface elevation at t2 (ft amsl)
Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after
placement (ft)
FINAL COVER
3-8N
PROFILE INFORMATION
0.50
Settlement_30Aug2015.xls Page 28 of 31
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Settlement Analyses
Erosion Protection Layer Erosion Protection Layer 5622.79 5622.54 5622.29 0.50 32.55 NA NA NA NA NA NA NA NA
Rooting Zone Rooting Zone 5622.29 5620.54 5618.79 3.50 32.05 NA NA NA NA NA NA NA NA
High-Compaction Layer High-Compaction Layer 5618.79 5617.04 5615.29 3.50 28.55 NA NA NA NA NA NA NA NA
Platform Fill Platform Fill 5615.29 5611.31 5607.34 7.95 25.05 NA NA NA NA NA NA NA NA
Layer 1 Int. Cover 5607.34 5605.91 5604.48 2.85 17.10 NA NA NA NA NA NA NA NA
Layer 2 Slime 5604.48 5604.41 5604.34 0.14 14.24 NA NA NA NA NA NA NA NA
Layer 3 Sand 5604.34 5604.26 5604.18 0.16 14.10 NA NA NA NA NA NA NA NA
Layer 4 Sand-Slime 5604.18 5603.88 5603.58 0.59 13.94 NA NA NA NA NA NA NA NA
Layer 5 Sand 5603.58 5603.43 5603.27 0.31 13.34 NA NA NA NA NA NA NA NA
Layer 6 Sand-Slime 5603.27 5603.12 5602.97 0.30 13.03 NA NA NA NA NA NA NA NA
Layer 7 Sand 5602.97 5601.94 5600.92 2.05 12.73 NA NA NA NA NA NA NA NA
Layer 8 Sand-Slime 5600.92 5598.04 5595.17 5.75 10.68 NA NA NA NA NA NA NA NA
Layer 9 Slime 5595.17 5595.09 5595.00 0.16 4.93 3152.03 3151.04 1.29 1.17 0.006 0.023 1.15 0.002
Layer 10 Sand-Slime 5595.00 5593.99 5592.98 2.03 4.76 3211.29 3271.54 0.99 0.89 0.005 0.020 0.87 0.021
Layer 11 Sand-Slime 5592.98 5591.61 5590.24 2.74 2.74 3352.72 3433.90 0.99 0.89 0.005 0.020 0.88 0.028
TOTAL: 0.05
Notes:1 From on-site investigation (Tailings Data Analysis Report. MWH, 2015)
Material Type 1
Effective Stress at
Midpoint of Layer
at t1, σ'i-mid1 (psf)
Thickness of
Layer at t1, H (ft)Height above liner (ft)
Effective Stress at
Bottom of Layer at
t1, σ'i-bott1 (psf)
Void Ratio
at t0, e0
Void Ratio
at t1, e1
Secondary
Compression
Index, Cα
Change in
Void Ratio
due to 1000
years of Creep, ∆e
Final Void Ratio
After 1,000
years, efinal
Settlement
due to 1000
years of Creep, δcreep
(ft)
3-8N
CREEP SETTLEMENT
Soil Layer
Elevation at
Top of Layer
at t1, zi-top1 (ft
amsl)
Elevation at
Midpoint of
Layer at t1, zi-mid1 (ft amsl)
Elevation at
Bottom of Layer
at t1, zi-bott1 (ft
amsl)
Settlement_30Aug2015.xls Page 29 of 31
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Settlement Analyses
5620.45 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl) From cover deisgn grading plan AutoCAD file
From Appendix C - Radon Emanation Modeling (MWH, 2015)
3.50 Thickness of Water Storage/Rooting Zone (ft) From Appendix C - Radon Emanation Modeling (MWH, 2015)
3.50 Thickness of High Compaction Layer (ft) From Appendix C - Radon Emanation Modeling (MWH, 2015)
4.25 Thickness of Random/Platform Fill on on top of existing interim cover (ft) Calculated
1273.89 Additional Stress due to Final Cover Placement, ΔσFC (psf)Calculated
5603.50 Water surface elevation during CPT investigation (ft amsl) From on-site investigation (Tailings Data Analysis Report. MWH, 2015)
5600.6 Water surface elevation at t0 (ft amsl)Minimum of 5' below top of tailings or water surface elevation at time of CPT testing (2013).
5590.63 Water surface elevation at t1 (ft amsl)
5585.63 Water surface elevation at t2 (ft amsl)
PROFILE INFORMATION
0.50
Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after
placement (ft)
FINAL COVER
3-8S
Settlement_30Aug2015.xls Page 30 of 31
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Settlement Analyses
Erosion Protection Layer Erosion Protection Layer 5619.39 5619.14 5618.89 0.50 33.76 NA NA NA NA NA NA NA NA
Rooting Zone Rooting Zone 5618.89 5617.14 5615.39 3.50 33.26 NA NA NA NA NA NA NA NA
High-Compaction Layer High-Compaction Layer 5615.39 5613.64 5611.89 3.50 29.76 NA NA NA NA NA NA NA NA
Platform Fill Platform Fill 5611.89 5609.76 5607.64 4.25 26.26 NA NA NA NA NA NA NA NA
Layer 1 Int. Cover 5607.64 5606.20 5604.77 2.87 22.01 NA NA NA NA NA NA NA NA
Layer 2 Sand 5604.77 5604.22 5603.67 1.10 19.14 NA NA NA NA NA NA NA NA
Layer 3 Sand-Slime 5603.67 5603.52 5603.36 0.31 18.04 NA NA NA NA NA NA NA NA
Layer 4 Sand 5603.36 5603.29 5603.21 0.15 17.73 NA NA NA NA NA NA NA NA
Layer 5 Sand-Slime 5603.21 5602.82 5602.44 0.77 17.58 NA NA NA NA NA NA NA NA
Layer 6 Sand 5602.44 5600.69 5598.93 3.51 16.81 NA NA NA NA NA NA NA NA
Layer 7 Sand-Slime 5598.93 5598.77 5598.62 0.32 13.30 NA NA NA NA NA NA NA NA
Layer 8 Sand 5598.62 5598.45 5598.29 0.32 12.99 NA NA NA NA NA NA NA NA
Layer 9 Sand-Slime 5598.29 5596.41 5594.53 3.77 12.66 NA NA NA NA NA NA NA NA
Layer 10 Slime 5594.53 5594.45 5594.37 0.15 8.90 NA NA NA NA NA NA NA NA
Layer 11 Sand-Slime 5594.37 5594.22 5594.06 0.32 8.74 NA NA NA NA NA NA NA NA
Layer 12 Slime 5594.06 5593.75 5593.44 0.62 8.43 NA NA NA NA NA NA NA NA
Layer 13 Sand-Slime 5593.44 5593.28 5593.12 0.32 7.81 NA NA NA NA NA NA NA NA
Layer 14 Sand-Slime 5593.12 5589.38 5585.63 7.49 7.49 3447.52 3668.72 0.99 0.90 0.005 0.020 0.88 0.077
TOTAL: 0.08
Notes:
1 From on-site investigation (Tailings Data Analysis Report. MWH, 2015)
Effective Stress at
Midpoint of Layer
at t1, σ'i-mid1 (psf)
Effective Stress at
Bottom of Layer at
t1, σ'i-bott1 (psf)
Void Ratio
at t0, e0
Void Ratio
at t1, e1Material Type 1 Thickness of
Layer at t1, H (ft)Height above liner (ft)
Secondary
Compression
Index, Cα
Change in
Void Ratio
due to 1000
years of Creep, ∆e
Final Void Ratio
After 1,000
years, efinal
Settlement
due to 1000
years of Creep, δcreep
(ft)
3-8S
CREEP SETTLEMENT
Soil Layer
Elevation at
Top of Layer
at t1, zi-top1 (ft
amsl)
Elevation at
Midpoint of
Layer at t1, zi-mid1 (ft amsl)
Elevation at
Bottom of Layer
at t1, zi-bott1 (ft
amsl)
Settlement_30Aug2015.xls Page 31 of 31

Updated Tailings Cover Design Report

ATTACHMENT F.3
SEISMIC SETTLEMENT CALCULATIONS
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Seismic Settlement Analyses
Notes t0 corresponds to beginning of final cover placement Assumes 99% of consolidation due to existing stress conditions has taken place
t1 corresponds to dewatering of the tailings to a level 5 feet above the liner
t2 corresponds to completion of dewatering
TAILINGS
2.70 Specific gravity of tailing sands, Gs-TSand Based on testing performed on other uranium tailings and presented in Keshian and Rager (1988)
2.80 Specific gravity of tailing sand-slimes, Gs-TS-S Average value from lab testing of samples obtained on-site (Tailings Data Analysis Report. MWH, 2015b)
2.86 Specific gravity of tailing slimes, Gs-TSlime Average value from lab testing of samples obtained on-site (Tailings Data Analysis Report. MWH, 2015b)
18% Fines content of tailings sands (%) Average value from lab testing of samples obtained on-site (Tailings Data Analysis Report. MWH, 2015b)
47% Fines content of tailings sand-slimes (%) Average value from lab testing of samples obtained on-site (Tailings Data Analysis Report. MWH, 2015b)
71% Fines content of tailings slimes (%) Average value from lab testing of samples obtained on-site (Tailings Data Analysis Report. MWH, 2015b)
97 In-situ dry unit weight of tailings sands at t0, γd0-Tsand (pcf)Average value from lab testing of samples obtained on-site (Tailings Data Analysis Report. MWH, 2015b)
88 In-situ dry unit weight of tailings sand-slimes at t0, γd0-TS-S (pcf)Average value from lab testing of samples obtained on-site (Tailings Data Analysis Report. MWH, 2015b)
78 In-situ dry unit weight of tailings slimes at t0, γd0-Tslime (pcf)Average value from lab testing of samples obtained on-site (Tailings Data Analysis Report. MWH, 2015b)
123 In-situ saturated unit weight of tailings sands at t0, γsat0-Tsand (pcf)Calculated
119 In-situ saturated unit weight of tailings sand-slimes at t0, γsat0-TS-S (pcf)Calculated
113 In-situ saturated unit weight of tailings slimes at t0, γsat0-Tslime (pcf)Calculated
103 Moist unit weight of tailings sands, γm-Tsand (pcf)Calculated, assuming long-term water content from laboratory testing (Tailings Data Analysis Report. MWH, 2015b)
93 Moist unit weight of tailings sand-slimes, γm-TS-S (pcf)Calculated, assuming long-term water content from laboratory testing (Tailings Data Analysis Report. MWH, 2015b)
83 Moist unit weight of tailings slimes, γm-Tslime (pcf)Calculated, assuming long-term water content from laboratory testing (Tailings Data Analysis Report. MWH, 2015b)
0.74 Void ratio of tailing sands at t0, e0-TSand Calculated
0.99 Void ratio of tailing sand-slimes at t0, e0-TS-S Calculated
1.29 Void ratio of tailing slimes at t0, e0-TSlime Calculated
27%Saturated water content of tailings sands at t0, wsat0-TSand (%)Calculated
35%Saturated water content of tailings sand-slimes at t0, wsat0-TS-S (%)Calculated
45%Saturated water content of tailings slimes at t0, wsat0-TSlime (%)Calculated
6%Water content of moist tailings sands, wm-TSand (%)From Attachment H - Radon Emanation Modeling including with this submittal
6%Water content of moist tailings sand-slimes, wm-TS-S (%)From Attachment H - Radon Emanation Modeling including with this submittal
6%Water content of moist tailings slimes, wm-TSlime (%)From Attachment H - Radon Emanation Modeling including with this submittal
0 Plasticity index of tailings sands, PITSand Average value from lab testing of samples obtained on-site (Tailings Data Analysis Report. MWH, 2015b)
10 Plasticity index of tailings sand-slimes, PITS-S Average value from lab testing of samples obtained on-site (Tailings Data Analysis Report. MWH, 2015b)
16 Plasticity index of tailings slimes, PITSlime Average value from lab testing of samples obtained on-site (Tailings Data Analysis Report. MWH, 2015b)
2.2 Coefficient "a" of Unsaturated Sand Tailings From Stewart, et al (2004), page 86, Figure 6.5
5.0 Coefficient "a" of Saturated Sand Tailings From Stewart, et al (2004), page 86, Figure 6.5
2.0 Coefficient "a" of Sand-Slime Tailings From Stewart, et al (2004), page 89, Figure 6.7
2.0 Coefficient "a" of Slime Tailings From Stewart, et al (2004), page 89, Figure 6.7
1.00 Coefficient "b" of Sand Tailings From Stewart, et al (2004), page 86, Figure 6.5
0.65 Coefficient "b" of Sand-Slime Tailings From Stewart, et al (2004), page 89, Figure 6.7
0.65 Coefficient "b" of Slime Tailings From Stewart, et al (2004), page 89, Figure 6.7
0.01% Strain threshold value of Sand Tailings, γtv From Stewart, et al (2004), page 86, Figure 6.5
0.03% Strain threshold value of Sand-Slime Tailings, γtv From Stewart, et al (2004), page 89, Figure 6.7
0.03% Strain threshold value of Slime Tailings, γtv From Stewart, et al (2004), page 89, Figure 6.7
0.36 Coefficient "R" of Sand Tailings From Stewart, et al (2004), page 86, for soils with non-plastic fines
0.34 Coefficient "R" of Sand-Slime Tailings From Stewart, et al (2004), page 89, for soils with medium plasticity fines
0.34 Coefficient "R" of Slime Tailings From Stewart, et al (2004), page 89, for soils with medium plasticity fines
Seismic Settlement Coefficients
Plasticity Index, PI
Void Ratio, e
Saturated Water Content, wSat
Water Content of Moist Tailings, wm-T
Moist Unit Weight, γm
SOIL PROPERTIES
Specific Gravity, Gs
Fines Content
Dry Unit Weight, γd
Saturated Unit Weight, γsat
Liquef_SeismicSettle_30Aug2015.xls Page 1 of 29
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Seismic Settlement Analyses
5.0 Height of water table above liner at t1, Hsat-1 (ft)Assumed for end of active maintenance
0.0 Height of water table above liner at t2, Hsat-2 (ft)
6.0%Long-term moisture content of tailings, wtailings (%)From Attachment H - Radon Emanation Modeling including with this submittal
508 Shear Wave Velocity of Tailings, Vs (ft/sec)Conservatively assumed to be the average of the shear wave velocities measured in Cell 2 tailings
2.61 Specific gravity of topsoil, Gs-Topsoil From Attachment H - Radon Emanation Modeling including with this submittal
2.62 Specific gravity of rock mulch, Gs-mulch From Attachment H - Radon Emanation Modeling including with this submittal
2.63 Specific gravity of cover soil, Gs-cover From Attachment H - Radon Emanation Modeling including with this submittal
118.0 Maximum dry unit weight of cover soil γcover-max (pcf)Average calculated from laboratory testing results (UWM, 2012)
100.7 Moist unit weight of cover soil at 80% relative compaction, γcover80 (pcf)Calculated
107.0 Moist unit weight of cover soil at 85% relative compaction, γcover85 (pcf)Calculated
119.6 Moist unit weight of cover soil at 95% relative compaction, γcover95 (pcf)Calculated
100 Dry unit weight of topsoil layer at 85% relative compaction, γtopsoil5 (pcf)From Attachment H - Radon Emanation Modeling including with this submittal
105 Moist unit weight of topsoil layer at 85% relative compaction, γtopsoil5 (pcf)Calculated
106 Dry unit weight of rock mulch layer at 85% relative compaction, γmulch85 (pcf)Calculated
110 Moist unit weight of rock mulch layer at 85% relative compaction, γmulch85 (pcf)From Attachment H - Radon Emanation Modeling including with this submittal
0.74 Void Ratio of cover soil at 80% relative compaction, ecover80 Calculated
0.64 Void Ratio of cover soil at 85% relative compaction, ecover85 Calculated
0.46 Void Ratio of cover soil at 95% relative compaction, ecover95 Calculated
0.61 Void Ratio of topsoil at 85% relative compaction, etopsoil85 Calculated from porosity presented in Attachment H - Radon Emanation Modeling including with this submittal
0.54 Void Ratio of rock mulch at 85% relative compaction, emulch85 Calculated from porosity presented in Attachment H - Radon Emanation Modeling including with this submittal
1.2 Coefficient "a" of Erosion Protection/Topsoil Cover From Stewart, et al (2004), page 88, Figure 6.6
2.0 Coefficient "a" of General Cover Soil From Stewart, et al (2004), page 89, Figure 6.7
0.65 Coefficient "a" of High-Compaction Layer From Stewart, et al (2004), page 89, Figure 6.7
0.80 Coefficient "b" of Erosion Protection/Topsoil Cover From Stewart, et al (2004), page 88, Figure 6.6
0.65 Coefficient "b" of General Cover Soil From Stewart, et al (2004), page 89, Figure 6.7
0.75 Coefficient "b" of High-Compaction Layer From Stewart, et al (2004), page 89, Figure 6.7
0.04% Strain threshold value of Erosion Protection/Topsoil Cover, γtv From Stewart, et al (2004), page 88, Figure 6.6
0.03% Strain threshold value of General Cover Soil, γtv From Stewart, et al (2004), page 89, Figure 6.7
0.02% Strain threshold value of High-Compaction Layer, γtv From Stewart, et al (2004), page 89, Figure 6.7
0.32 Coefficient "R" of Erosion Protection/Topsoil Cover From Stewart, et al (2004), page 88, for soils with low plasticity fines
0.34 Coefficient "R" of General Cover Soil From Stewart, et al (2004), page 89, for soils with medium plasticity fines
0.34 Coefficient "R" of High-Compaction Layer From Stewart, et al (2004), page 89, for soils with medium plasticity fines
6.7%Long-term moisture content of cover soil, wcover (%)Estimated based on measured 15bar water content. (UWM, 2012)
5.2%Long-term moisture content of topsoil, wtopsoil (%)From Attachment H - Radon Emanation Modeling including with this submittal
4.0%Long-term moisture content of rock mulch, wrockmulch (%)From Attachment H - Radon Emanation Modeling including with this submittal
0.14 Compression index of cover soil, Cc-cover Calculated from empirical equation presented in Holtz and Kovacs, 1981. Page 341. Cc = 0.30*(e0-0.27)
51% Fines content of cover soil (%) Mean value from laboratory analyses presented in previous response to interrogatories (EFRI, 2012)
11 Plasticity Index of cover soil, PI Weighted Average from 2010 and 2012 laboratory testing (laboratory results presented in EFRI, 2012)
508 Shear Wave Velocity of Cover Soil, Vs (ft/sec)Conservatively assumed to be the average of the shear wave velocities measured in Cell 2 tailings
0.15 Maximum horizontal acceleration at the ground surface, amax/g From Probabilistic Seismic Hazard Analysis (MWH, 2015a)
5.5 Magnitude of Design Event, M From Probabilistic Seismic Hazard Analysis (MWH, 2015a)
20 Site-Source Distance, r (km) From Probabilistic Seismic Hazard Analysis (MWH, 2015a)1.00 Stress reduction factor, rd Conservatively assumed.
7.51 Equiv. Number of Uniform Strain Cycles, N Calculated from Stewart, et al (2004), Equation 6.11, page 79, S parameter =0 since shallow soil and rock underlie the tailings (<20m) below tailings
594 Average shear wave velocity for cover, Vs (ft/s) Conservatively estimated as upper bound average Vs for tailings in Cell 2 in October 2013 (Tailings Data Analysis Report. MWH, 2015b)
495 Average shear wave velocity for tailings (3' - 9.4'), Vs (ft/s) Conservatively estimated as average Vs over depth range for tailings in Cell 2 in October 2013 (Tailings Data Analysis Report. MWH, 2015b)
460 Average shear wave velocity for tailings (9.4' - 14.4'), Vs (ft/s) Conservatively estimated as average Vs over depth range for tailings in Cell 2 in October 2013 (Tailings Data Analysis Report. MWH, 2015b)
500 Average shear wave velocity for tailings (14.4' - 19.6'), Vs (ft/s) Conservatively estimated as average Vs over depth range for tailings in Cell 2 in October 2013 (Tailings Data Analysis Report. MWH, 2015b)
538 Average shear wave velocity for tailings (19.6' - 24.7'), Vs (ft/s) Conservatively estimated as average Vs over depth range for tailings in Cell 2 in October 2013 (Tailings Data Analysis Report. MWH, 2015b)
594 Average shear wave velocity for tailings (24.7' - liner), Vs (ft/s) Conservatively estimated as average Vs over depth range for tailings in Cell 2 in October 2013 (Tailings Data Analysis Report. MWH, 2015b)
62.4 Unit Weight of Water, γW
82.4 Atmospheric Pressure, Pa (kPa)Calculated assuming elev=5600' amsl. http://www.engineeringtoolbox.com/air-altitude-pressure-d_462.html
1722.0 Atmospheric Pressure, Pa (psf)Unit conversion calculation
MISCELLANEOUS PARAMETERS
Seismic Settlement Coefficients
SEISMIC PARAMETERS
Other
COVER SOILSpecific Gravity, Gs
Unit Weight, γ
Void Ratio, e
Other
Liquef_SeismicSettle_30Aug2015.xls Page 2 of 29
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Seismic Settlement Analyses
REFERENCES
Energy Fuels Resources (USA) Inc. (EFRI), 2012. Responses to Interrogatories – Round 1 for Reclamation Plan,
Revision 5.0, March 2012. August 15.
Holtz, R.D. and Kovacs, W.D., 1981. An Introduction to Geotechnical Engineering. Prentice Hall, Inc. New Jersey
Keshian, B., and Rager, R. 1988. Geotechnical Properties of Hydraulically Placed Uranium Mill Tailings, in Hydraulically
Fill Structures, Geotechnical Special Publication No. 21, Eds. Van Zyl, D., and Vick, S., ASCE, August
MWH Americas, Inc. (MWH), 2015a. White Mesa Mill Probabilistic Seismic Hazard Analysis Report. Prepared for Energy
Fuels Resources (USA) Inc. April.
MWH Americas, Inc. (MWH), 2015b. White Mesa Mill Tailings Data Analysis Report. Prepared for Energy Fuels Resources (USA) Inc. April.
Stewart, J.P., D. Whang, M.Moyneur, and P.Duku, 2004. Seismic Compression of As-Compacted Fill Soils With Variable
Levels of Fines Content and Fines Plasticity. CUREE Publication No.EDA-05. July.
Terzaghi, K., R. Peck, and G. Mesri, 1996. Soil Mechanics in Engineering Practice, Third Edition. John Wiley and Sons, Inc. New York
University of Wisconsin-Madison (UWM), Wisconsin Geotechnics Laboratory, 2012. Compaction and Hydraulic Properties
of Soils from Banding, Utah. Geotechnics Report NO. 12-41 by C.H. Benson and X. Wang. July 24.
Liquef_SeismicSettle_30Aug2015.xls Page 3 of 29
Energy Fuels Resources (USA) Inc.White Mesa Mill
Seismic Settlement Analyses
Data File: 13-52106_SP2W2-BSC-CPT 5613.10 Water surface elevation during CPT investigation (ft a5615.85 Ground Surface Elevation at time of CPT (ft amsl)
Location: White Mesa 2013 CPT Investigation 0.15 5607.57 Water surface elevation at t0 (ft amsl)5625.87 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl)
..\..\..\6.2.3 Field Data\2013 Field Investigation\Conetec Dat 5.5 5598.51 Water surface elevation at t1 (ft amsl) 0.50 Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after plac ###### 5625.62 5625.37 0.50 0.055 110 0.028 0.014 0.00 0.00 0.028 0.014 0.08 508 1.7E-03 4.4E+02 3.0E-06 11 0.068 46696 0.00% 1.20 0.80 0.04% 0.000 0.32 0.133 0.778 0.00% 0.0000
Tailings Sands 1.69 5593.51 Water surface elevation at t2 (ft amsl)3.50 Thickness of Water Storage/Rooting Zone (ft)###### 5623.62 5621.87 3.50 0.054 107 0.215 0.121 0.00 0.00 0.215 0.121 0.69 508 1.7E-03 4.3E+02 2.8E-05 11 0.118 18930 0.00% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
Tailings Sand-Slimes 4.00 Thickness of High Compaction Layer (ft)###### 5619.87 5617.87 4.00 0.060 120 0.454 0.334 0.00 0.00 0.454 0.334 1.83 508 1.9E-03 4.8E+02 6.8E-05 11 0.153 12419 0.01% 0.65 0.75 0.02% 0.000 0.34 0.079 0.765 0.00% 0.0000
Tailings Slimes 1.44 2.02 Thickness of Random/Platform Fill on on top of existing interim cover (ft) ###### 5616.86 5615.85 2.02 0.050 101 0.556 0.505 0.00 0.00 0.556 0.505 2.75 508 1.6E-03 4.0E+02 1.2E-04 11 0.170 10466 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
Interim Cover 0.47 1111.60 Additional Stress due to Final Cover Placement, ΔσFC (psf)
Cells Requiring User Input/Manipulation 2.21 2.21 7.51 5593.51 Elevation of bottom of tailings (liner) (ft amsl)
0.347
rd Cσ Kσ Ka rd Dr f Kσ Ka Avg
(ft) (ft amsl) TSF TSF TSF (ft) PSI (%) (tcf) (pcf) (tsf)(tsf)(tsf) 1=Yes TSF MPa % (tsf)(tsf)(tsf) 1=Yes FoS m
0=No 0=No (ft/sec) (tcf) tsf tsf (%)
0.164 5615.69 19.0 0.292 19.0 2.8 1.22 1.53%Interim Cover 0.050 100.7 0.01 0.00 0.01 0 1.70 32.317 449.21 37.57 2302 1.54% 1.4 51% 0.56 0.00 0.56 0 1.00 0.06 1.03 1.0 0.059 43.50 81.07 0.114 1.92 0.98 0.35 0.80 2.53 1.0 0.017 1.00 37.57 0.081 196.84 99.38 2 3.10 594 1.6E-03 5.5E+02 1.0E-04 11 0.175 9996 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
0.328 5615.52 27.6 0.767 27.6 3.0 1.32 2.78%Interim Cover 0.050 100.7 0.02 0.00 0.02 0 1.70 46.937 652.42 54.55 1671 2.78% 1.7 51% 0.57 0.00 0.57 0 1.00 0.07 1.03 1.0 0.060 49.46 104.02 0.149 2.51 0.98 0.43 0.79 2.32 1.0 0.019 1.03 55.95 0.096 116.62 59.56 2 3.15 594 1.6E-03 5.5E+02 1.0E-04 11 0.176 9936 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
0.492 5615.36 63.0 1.250 63.0 2.6 1.13 1.98%Interim Cover 0.050 100.7 0.02 0.00 0.02 0 1.70 107.100 ###### 124.42 2542 1.98% 1.5 51% 0.58 0.00 0.58 0 1.00 0.13 1.05 1.0 0.061 73.98 198.41 1.000 16.46 0.98 0.64 0.68 3.13 1.0 0.014 1.00 124.42 0.259 209.31 112.89 2 3.20 594 1.6E-03 5.5E+02 1.0E-04 11 0.177 9877 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
0.656 5615.19 130.6 1.407 130.6 1.2 0.53 1.08%Interim Cover 0.050 100.7 0.03 0.00 0.03 0 1.70 221.952 ###### 257.80 3950 1.08% 1.3 51% 0.59 0.00 0.59 0 1.00 0.30 1.10 1.0 0.064 120.79 378.59 1.000 15.73 0.98 0.93 0.60 3.68 1.0 0.012 1.00 257.80 1.000 606.04 310.88 2 3.25 594 1.6E-03 5.5E+02 1.0E-04 11 0.177 9819 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
0.820 5615.03 202.3 0.922 202.3 2.2 0.96 0.46%Interim Cover 0.050 100.7 0.04 0.00 0.04 0 1.70 343.859 ###### 399.40 4896 0.46% 0.9 51% 0.60 0.00 0.60 0 1.00 0.30 1.10 1.0 0.064 170.48 569.88 1.000 15.73 0.97 1.15 0.60 3.37 1.0 0.013 1.00 399.40 1.000 485.02 250.37 2 3.30 594 1.6E-03 5.5E+02 1.1E-04 11 0.178 9762 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
0.984 5614.87 189.1 1.391 189.0 4.1 1.77 0.74%Interim Cover 0.050 100.7 0.05 0.00 0.05 0 1.70 321.351 ###### 373.28 3813 0.74% 1.1 51% 0.61 0.00 0.61 0 1.00 0.30 1.10 1.0 0.064 161.32 534.60 1.000 15.73 0.97 1.12 0.60 3.13 1.0 0.014 1.00 373.28 1.000 404.34 210.03 2 3.35 594 1.6E-03 5.5E+02 1.1E-04 11 0.179 9707 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.148 5614.70 207.8 1.514 207.8 0.1 0.04 0.73%Interim Cover 0.050 100.7 0.06 0.00 0.06 0 1.70 353.311 ###### 410.35 3593 0.73% 1.1 51% 0.61 0.00 0.61 0 1.00 0.30 1.10 1.0 0.064 174.33 584.68 1.000 15.73 0.97 1.17 0.60 2.95 1.0 0.015 1.00 410.35 1.000 346.72 181.22 2 3.40 594 1.6E-03 5.5E+02 1.1E-04 11 0.179 9652 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.312 5614.54 81.3 1.745 81.3 0.7 0.29 2.15%Interim Cover 0.050 100.7 0.07 0.00 0.07 0 1.70 138.142 ###### 160.45 1229 2.15% 1.6 51% 0.62 0.00 0.62 0 1.00 0.18 1.06 1.0 0.061 86.63 247.08 1.000 16.36 0.97 0.73 0.63 2.56 1.0 0.017 1.00 160.45 1.000 303.50 159.93 2 3.45 594 1.6E-03 5.5E+02 1.1E-04 11 0.180 9599 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.476 5614.37 52.5 1.382 52.5 -0.3 -0.14 2.63%Interim Cover 0.050 100.7 0.07 0.00 0.07 0 1.70 89.284 ###### 103.69 705 2.64% 1.8 51% 0.63 0.00 0.63 0 1.00 0.11 1.03 1.0 0.060 66.71 170.40 0.412 6.88 0.97 0.59 0.71 2.05 1.0 0.021 1.07 111.44 0.209 56.33 31.61 2 3.50 594 1.6E-03 5.5E+02 1.1E-04 11 0.180 9547 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.640 5614.21 40.7 1.041 40.7 0.1 0.02 2.56%Interim Cover 0.050 100.7 0.08 0.00 0.08 0 1.70 69.241 962.45 80.42 492 2.56% 1.8 51% 0.64 0.00 0.64 0 1.00 0.09 1.03 1.0 0.059 58.54 138.96 0.229 3.86 0.97 0.52 0.74 1.83 1.0 0.023 1.11 89.28 0.146 35.52 19.69 2 3.55 594 1.6E-03 5.5E+02 1.1E-04 11 0.181 9495 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.804 5614.05 34.3 0.916 34.3 -0.7 -0.29 2.67%Interim Cover 0.050 100.7 0.09 0.00 0.09 0 1.70 58.310 810.51 67.72 376 2.68% 1.9 51% 0.65 0.00 0.65 0 1.00 0.08 1.02 1.0 0.059 54.08 121.80 0.183 3.10 0.97 0.48 0.76 1.71 1.0 0.025 1.17 78.96 0.126 27.80 15.45 2 3.60 594 1.6E-03 5.5E+02 1.1E-04 11 0.182 9444 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.968 5613.88 64.5 1.005 64.5 0.8 0.33 1.56%Interim Cover 0.050 100.7 0.10 0.00 0.10 0 1.70 109.582 ###### 127.28 649 1.56% 1.6 51% 0.65 0.00 0.65 0 1.00 0.13 1.04 1.0 0.060 74.99 202.27 1.000 16.71 0.97 0.65 0.67 2.02 1.0 0.021 1.00 127.28 0.272 55.07 35.89 2 3.65 594 1.6E-03 5.5E+02 1.2E-04 11 0.182 9395 0.02% 2.00 0.65 0.03%0.000 0.34 0.079 0.765 0.00% 0.0000
2.133 5613.72 88.7 1.082 88.7 0.0 0.00 1.22%Interim Cover 0.050 100.7 0.11 0.00 0.11 0 1.70 150.858 ###### 175.21 825 1.22% 1.4 51% 0.66 0.00 0.66 0 1.00 0.20 1.05 1.0 0.061 91.81 267.02 1.000 16.46 0.97 0.76 0.62 2.22 1.0 0.019 1.00 175.21 1.000 187.13 101.80 2 3.70 594 1.6E-03 5.5E+02 1.2E-04 11 0.183 9346 0.02% 2.00 0.65 0.03%0.000 0.34 0.079 0.765 0.00% 0.0000
2.297 5613.55 88.1 1.355 88.1 0.0 0.00 1.54%Interim Cover 0.050 100.7 0.12 0.00 0.12 0 1.70 149.685 ###### 173.85 760 1.54% 1.5 51% 0.67 0.00 0.67 0 1.00 0.20 1.05 1.0 0.061 91.33 265.18 1.000 16.52 0.97 0.76 0.62 2.15 1.0 0.020 1.00 173.85 1.000 173.84 95.18 2 3.75 594 1.6E-03 5.5E+02 1.2E-04 11 0.183 9298 0.02% 2.00 0.65 0.03%0.000 0.34 0.079 0.765 0.00% 0.0000
2.461 5613.39 81.2 1.017 81.2 0.2 0.08 1.25%Interim Cover 0.050 100.7 0.12 0.00 0.12 0 1.70 138.091 ###### 160.39 655 1.25% 1.5 51% 0.68 0.00 0.68 0 1.00 0.18 1.04 1.0 0.060 86.61 246.99 1.000 16.67 0.97 0.73 0.63 2.03 1.0 0.021 1.00 160.39 1.000 162.31 89.49 2 3.80 594 1.6E-03 5.5E+02 1.2E-04 11 0.184 9251 0.02% 2.00 0.65 0.03%0.000 0.34 0.079 0.765 0.00% 0.0000
2.625 5613.23 71.1 0.910 71.1 0.7 0.32 1.28%Interim Cover 0.050 100.7 0.13 0.00 0.13 0 1.70 120.887 ###### 140.41 537 1.28% 1.5 51% 0.69 0.00 0.69 0 1.00 0.15 1.03 1.0 0.059 79.60 220.01 1.000 16.82 0.97 0.68 0.66 1.90 1.0 0.023 1.00 140.41 0.337 51.37 34.09 2 3.85 594 1.6E-03 5.5E+02 1.2E-04 11 0.184 9205 0.02% 2.00 0.65 0.03%0.000 0.34 0.079 0.765 0.00% 0.0000
2.789 5613.06 61.0 0.753 61.0 -0.9 -0.37 1.24%Interim Cover 0.050 100.7 0.14 0.00 0.14 1 1.70 103.632 ###### 120.35 437 1.24% 1.6 51% 0.70 0.00 0.70 0 0.99 0.12 1.03 1.0 0.059 72.56 192.91 0.840 14.23 0.97 0.63 0.68 1.78 1.0 0.024 1.00 120.35 0.242 35.00 24.61 2 3.90 594 1.6E-03 5.5E+02 1.2E-04 11 0.185 9159 0.02% 2.00 0.65 0.03%0.000 0.34 0.079 0.765 0.00% 0.0000
2.953 5612.90 57.1 0.690 57.1 -0.9 -0.37 1.21%Interim Cover 0.050 100.7 0.15 0.01 0.14 1 1.70 97.036 ###### 112.69 400 1.21% 1.6 51% 0.70 0.00 0.70 0 0.99 0.12 1.02 1.0 0.059 69.87 182.56 0.580 9.86 0.97 0.61 0.69 1.74 1.0 0.025 1.00 112.69 0.213 30.14 20.00 2 3.95 594 1.6E-03 5.5E+02 1.2E-04 11 0.186 9114 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
3.117 5612.73 50.5 0.655 50.5 -0.1 -0.05 1.30%Interim Cover 0.050 100.7 0.16 0.01 0.15 1 1.70 85.782 ###### 99.63 346 1.30% 1.6 51% 0.71 0.00 0.71 0 0.99 0.11 1.02 1.0 0.059 65.28 164.91 0.362 6.18 0.97 0.58 0.71 1.67 1.0 0.026 1.00 99.63 0.172 23.81 14.99 2 4.00 495 1.6E-03 3.8E+02 1.8E-04 11 0.186 9070 0.03% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.02% 0.0000
3.281 5612.57 52.1 0.800 52.1 -0.1 -0.06 1.53%Sand-Slime Tailing 0.059 119.0 0.17 0.02 0.15 1 1.70 88.604 ###### 102.91 346 1.54% 1.7 47% 0.72 0.00 0.72 0 0.99 0.11 1.02 1.0 0.058 66.39 169.30 0.401 6.85 0.97 0.59 0.71 1.67 1.0 0.026 1.03 105.93 0.191 25.57 16.21 2 4.05 495 1.8E-03 4.5E+02 1.6E-04 10 0.187 9259 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
3.445 5612.41 55.0 0.793 55.0 0.1 0.03 1.44%Sand-Slime Tailing 0.059 119.0 0.18 0.02 0.15 1 1.70 93.449 ###### 108.54 354 1.45% 1.7 47% 0.73 0.00 0.73 0 0.99 0.11 1.02 1.0 0.058 68.37 176.90 0.489 8.38 0.97 0.60 0.70 1.68 1.0 0.025 1.01 109.63 0.203 26.38 17.38 2 4.10 495 1.8E-03 4.5E+02 1.6E-04 10 0.188 9208 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
3.609 5612.24 40.3 0.780 40.3 -1.0 -0.44 1.93%Sand-Slime Tailing 0.059 119.0 0.19 0.03 0.16 1 1.70 68.544 952.76 79.60 252 1.94% 1.8 47% 0.74 0.00 0.74 0 0.99 0.09 1.01 1.0 0.058 58.22 137.81 0.225 3.88 0.97 0.52 0.74 1.54 1.0 0.028 1.14 91.09 0.150 19.01 11.45 2 4.15 495 1.8E-03 4.5E+02 1.6E-04 10 0.188 9158 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
3.773 5612.08 31.5 0.543 31.5 0.5 0.23 1.72%Sand-Slime Tailing 0.059 119.0 0.20 0.03 0.16 1 1.70 53.584 744.82 62.24 191 1.73% 1.9 47% 0.75 0.00 0.75 0 0.99 0.08 1.01 1.0 0.058 52.13 114.37 0.168 2.91 0.97 0.46 0.77 1.46 1.0 0.029 1.17 72.98 0.116 14.28 8.59 2 4.20 495 1.8E-03 4.5E+02 1.6E-04 10 0.189 9108 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
3.937 5611.91 30.6 0.621 30.6 -0.2 -0.08 2.03%Sand-Slime Tailing 0.059 119.0 0.21 0.04 0.17 1 1.70 52.088 724.02 60.49 180 2.04% 2.0 47% 0.76 0.00 0.76 0 0.99 0.08 1.01 1.0 0.058 51.52 112.01 0.164 2.84 0.97 0.45 0.78 1.44 1.0 0.030 1.24 75.19 0.120 14.30 8.57 2 4.25 495 1.8E-03 4.5E+02 1.6E-04 10 0.190 9059 0.03% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
4.101 5611.75 25.9 0.747 25.9 1.3 0.55 2.89%Sand-Slime Tailing 0.059 119.0 0.22 0.04 0.17 1 1.70 43.962 611.07 51.07 148 2.91% 2.1 47% 0.77 0.00 0.77 0 0.99 0.07 1.01 1.0 0.058 48.21 99.29 0.141 2.46 0.97 0.41 0.79 1.39 1.0 0.031 1.51 76.95 0.122 14.26 8.36 2 4.30 495 1.8E-03 4.5E+02 1.7E-04 10 0.190 9012 0.03% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
4.265 5611.58 25.9 0.883 25.9 7.3 3.14 3.41%Slime Tailings 0.057 113.1 0.22 0.05 0.18 1 1.70 43.979 611.31 51.17 145 3.44% 2.2 71% 0.78 0.00 0.78 0 0.99 0.07 1.01 1.0 0.057 47.91 99.07 0.141 2.45 0.97 0.41 0.79 1.39 1.0 0.031 1.64 84.13 0.135 15.41 8.93 2 4.35 495 1.8E-03 4.3E+02 1.8E-04 16 0.443 7376 0.03% 2.00 0.65 0.03% 0.002 0.34 0.079 0.765 0.29% 0.0005
4.429 5611.42 89.9 1.190 89.6 44.0 19.08 1.32%Sand Tailings 0.062 123.5 0.23 0.05 0.18 1 1.70 152.354 ###### 177.49 491 1.33% 1.6 18% 0.79 0.00 0.79 0 0.99 0.21 1.02 1.0 0.058 67.47 244.96 1.000 17.24 0.97 0.77 0.62 1.82 1.0 0.023 1.00 177.49 1.000 110.72 63.98 2 4.40 495 1.9E-03 4.7E+02 1.6E-04 0 0.195 11235 0.03% 2.20 1.00 0.01% 0.000 0.36 0.025 0.751 0.07% 0.0001
4.593 5611.26 84.3 1.536 84.2 21.1 9.16 1.82%Sand Tailings 0.062 123.5 0.25 0.06 0.19 1 1.70 143.140 ###### 166.51 448 1.83% 1.7 18% 0.80 0.00 0.80 0 0.98 0.19 1.01 1.0 0.058 64.66 231.17 1.000 17.33 0.97 0.75 0.63 1.76 1.0 0.024 1.03 171.98 1.000 107.80 62.57 2 4.45 495 1.9E-03 4.7E+02 1.7E-04 0 0.196 11177 0.03% 2.20 1.00 0.01% 0.000 0.36 0.025 0.751 0.07% 0.0001
4.757 5611.09 45.9 1.208 45.9 6.9 3.00 2.63%Sand-Slime Tailing 0.059 119.0 0.25 0.06 0.19 1 1.70 78.030 ###### 90.71 238 2.64% 2.0 47% 0.81 0.00 0.81 0 0.98 0.10 1.01 1.0 0.057 62.12 152.83 0.285 4.98 0.97 0.55 0.73 1.51 1.0 0.028 1.27 114.89 0.221 23.26 14.12 2 4.50 495 1.8E-03 4.5E+02 1.7E-04 10 0.193 8828 0.03% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
4.921 5610.93 20.0 0.909 20.0 1.7 0.72 4.54%Slime Tailings 0.057 113.1 0.26 0.07 0.20 1 1.70 34.051 473.31 39.57 101 4.60% 2.4 71% 0.82 0.00 0.82 0 0.98 0.06 1.00 1.0 0.057 43.87 83.44 0.117 2.06 0.97 0.36 0.80 1.34 1.0 0.032 2.26 89.35 0.146 15.08 8.57 2 4.55 495 1.8E-03 4.3E+02 1.9E-04 16 0.445 7228 0.03% 2.00 0.65 0.03% 0.003 0.34 0.079 0.765 0.47% 0.0008
5.085 5610.76 10.4 0.273 10.4 2.2 0.96 2.62%Slime Tailings 0.057 113.1 0.27 0.07 0.20 1 1.70 17.697 245.99 20.58 51 2.69% 2.4 71% 0.83 0.00 0.83 0 0.98 0.05 1.00 1.0 0.057 37.25 57.84 0.085 1.50 0.96 0.26 0.80 1.34 1.0 0.032 2.38 48.99 0.091 9.17 5.34 2 4.60 495 1.8E-03 4.3E+02 1.9E-04 16 0.446 7195 0.04% 2.00 0.65 0.03% 0.003 0.34 0.079 0.765 0.51% 0.0008
5.249 5610.60 7.0 0.186 7.0 4.3 1.87 2.65%Slime Tailings 0.057 113.1 0.28 0.08 0.20 1 1.70 11.866 164.94 13.83 33 2.77% 2.6 71% 0.84 0.00 0.84 0 0.98 0.05 1.00 1.0 0.057 34.91 48.74 0.076 1.34 0.96 0.21 0.80 1.33 1.0 0.032 3.12 43.13 0.086 8.50 4.92 2 4.65 495 1.8E-03 4.3E+02 1.9E-04 16 0.446 7162 0.04% 2.00 0.65 0.03% 0.004 0.34 0.079 0.765 0.55% 0.0009
5.413 5610.44 5.8 0.170 5.8 4.1 1.77 2.93%Slime Tailings 0.057 113.1 0.29 0.08 0.21 1 1.70 9.809 136.35 11.44 26 3.09% 2.7 71% 0.85 0.00 0.85 0 0.98 0.05 1.00 1.0 0.057 34.07 45.52 0.073 1.29 0.96 0.20 0.80 1.33 1.0 0.032 3.77 43.19 0.086 8.34 4.82 2 4.70 495 1.8E-03 4.3E+02 1.9E-04 16 0.447 7130 0.04% 2.00 0.65 0.03% 0.004 0.34 0.079 0.765 0.59% 0.0010
5.577 5610.27 5.5 0.100 5.5 4.8 2.09 1.81%Slime Tailings 0.057 113.1 0.30 0.09 0.21 1 1.70 9.367 130.20 10.94 25 1.91% 2.6 71% 0.86 0.00 0.86 0 0.98 0.05 1.00 1.0 0.057 33.90 44.84 0.073 1.28 0.96 0.19 0.80 1.32 1.0 0.032 3.11 34.07 0.078 7.46 4.37 2 4.75 495 1.8E-03 4.3E+02 1.9E-04 16 0.448 7098 0.04% 2.00 0.65 0.03% 0.004 0.34 0.079 0.765 0.62% 0.0010
5.741 5610.11 10.8 0.134 10.8 6.8 2.96 1.24%Sand-Slime Tailing 0.059 119.0 0.31 0.09 0.22 1 1.70 18.360 255.20 21.41 48 1.27% 2.2 47% 0.87 0.00 0.87 0 0.98 0.05 1.00 1.0 0.057 37.81 59.22 0.087 1.54 0.96 0.27 0.80 1.32 1.0 0.032 1.72 36.93 0.081 7.52 4.53 2 4.80 495 1.8E-03 4.5E+02 1.9E-04 10 0.196 8586 0.03% 2.00 0.65 0.03% 0.001 0.34 0.079 0.765 0.15% 0.0002
5.905 5609.94 7.7 0.162 7.6 3.3 1.43 2.12%Slime Tailings 0.057 113.1 0.32 0.10 0.22 1 1.70 12.971 180.30 15.11 33 2.21% 2.5 71% 0.88 0.00 0.88 0 0.98 0.05 1.00 1.0 0.056 35.35 50.45 0.078 1.38 0.96 0.22 0.80 1.31 1.0 0.032 2.77 41.86 0.085 7.76 4.57 2 4.85 495 1.8E-03 4.3E+02 2.0E-04 16 0.449 7034 0.04% 2.00 0.65 0.03% 0.005 0.34 0.079 0.765 0.69% 0.0011
6.069 5609.78 6.6 0.117 6.6 3.7 1.61 1.76%Slime Tailings 0.057 113.1 0.33 0.10 0.23 1 1.70 11.254 156.43 13.12 28 1.85% 2.5 71% 0.89 0.00 0.89 0 0.98 0.05 1.00 1.0 0.056 34.66 47.77 0.075 1.34 0.96 0.21 0.80 1.31 1.0 0.032 2.83 37.11 0.081 7.27 4.30 2 4.90 495 1.8E-03 4.3E+02 2.0E-04 16 0.449 7003 0.04% 2.00 0.65 0.03% 0.005 0.34 0.079 0.765 0.73% 0.0012
6.234 5609.62 7.5 0.098 7.5 4.8 2.07 1.30%Slime Tailings 0.057 113.1 0.34 0.11 0.23 1 1.70 12.767 177.46 14.89 31 1.36% 2.4 71% 0.89 0.00 0.89 0 0.98 0.05 1.00 1.0 0.056 35.27 50.16 0.078 1.38 0.96 0.22 0.80 1.30 1.0 0.033 2.29 34.07 0.078 6.91 4.15 2 4.95 495 1.8E-03 4.3E+02 2.0E-04 16 0.450 6973 0.04% 2.00 0.65 0.03% 0.005 0.34 0.079 0.765 0.76% 0.0012
6.398 5609.45 8.5 0.058 8.5 5.5 2.39 0.68%Sand-Slime Tailing 0.059 119.0 0.35 0.11 0.23 1 1.70 14.399 200.15 16.79 35 0.71% 2.2 47% 0.90 0.00 0.90 0 0.97 0.05 1.00 1.0 0.056 36.19 52.98 0.080 1.43 0.96 0.24 0.80 1.30 1.0 0.033 1.68 28.28 0.074 6.36 3.90 2 5.00 495 1.8E-03 4.5E+02 1.9E-04 10 0.198 8436 0.03% 2.00 0.65 0.03% 0.002 0.34 0.079 0.765 0.35% 0.0006
6.562 5609.29 11.8 0.109 11.7 5.3 2.29 0.93%Sand-Slime Tailing 0.059 119.0 0.36 0.12 0.24 1 1.70 19.941 277.18 23.23 48 0.96% 2.2 47% 0.91 0.00 0.91 0 0.97 0.05 1.00 1.0 0.056 38.45 61.67 0.090 1.60 0.96 0.28 0.80 1.29 1.0 0.033 1.57 36.41 0.080 6.82 4.21 2 5.05 495 1.8E-03 4.5E+02 2.0E-04 10 0.199 8399 0.03% 2.00 0.65 0.03% 0.003 0.34 0.079 0.765 0.39% 0.0006
6.726 5609.12 9.5 0.147 9.5 5.2 2.27 1.54%Sand-Slime Tailing 0.059 119.0 0.37 0.12 0.24 1 1.70 16.150 224.49 18.82 38 1.60% 2.4 47% 0.92 0.00 0.92 0 0.97 0.05 1.00 1.0 0.056 36.90 55.72 0.083 1.49 0.96 0.25 0.80 1.29 1.0 0.033 2.20 41.40 0.084 7.04 4.26 2 5.10 495 1.8E-03 4.5E+02 2.0E-04 10 0.199 8362 0.03% 2.00 0.65 0.03% 0.003 0.34 0.079 0.765 0.43% 0.0007
6.890 5608.96 7.6 0.165 7.5 7.0 3.04 2.18%Slime Tailings 0.057 113.1 0.38 0.13 0.25 1 1.70 12.801 177.93 14.95 29 2.29% 2.6 71% 0.93 0.00 0.93 0 0.97 0.05 1.00 1.0 0.056 35.30 50.25 0.078 1.39 0.96 0.22 0.80 1.28 1.0 0.033 3.06 45.80 0.088 7.22 4.31 2 5.15 495 1.8E-03 4.3E+02 2.1E-04 16 0.452 6853 0.04% 2.00 0.65 0.03% 0.006 0.34 0.079 0.765 0.89% 0.0015
7.054 5608.80 5.6 0.138 5.5 9.3 4.03 2.48%Slime Tailings 0.057 113.1 0.39 0.13 0.25 1 1.70 9.350 129.97 10.97 20 2.67% 2.7 71% 0.94 0.00 0.94 0 0.97 0.05 1.00 1.0 0.056 33.91 44.88 0.073 1.30 0.96 0.19 0.80 1.28 1.0 0.033 4.10 45.03 0.088 7.05 4.18 2 5.20 495 1.8E-03 4.3E+02 2.1E-04 16 0.452 6825 0.04% 2.00 0.65 0.03% 0.006 0.34 0.079 0.765 0.92% 0.0015
7.218 5608.63 5.1 0.118 5.0 12.3 5.33 2.33%Slime Tailings 0.057 113.1 0.40 0.14 0.26 1 1.70 8.483 117.91 10.00 18 2.53% 2.7 71% 0.95 0.00 0.95 0 0.97 0.05 1.00 1.0 0.056 33.57 43.58 0.072 1.28 0.96 0.18 0.80 1.27 1.0 0.033 4.31 43.09 0.086 6.81 4.05 2 5.25 495 1.8E-03 4.3E+02 2.2E-04 16 0.453 6797 0.04% 2.00 0.65 0.03% 0.006 0.34 0.079 0.765 0.95% 0.0016
7.382 5608.47 4.8 0.099 4.7 14.7 6.38 2.05%Slime Tailings 0.057 113.1 0.41 0.14 0.26 1 1.70 8.058 112.01 9.54 17 2.24% 2.7 71% 0.96 0.00 0.96 0 0.97 0.04 1.00 1.0 0.056 33.41 42.95 0.071 1.28 0.96 0.18 0.80 1.27 1.0 0.033 4.26 40.64 0.084 6.55 3.91 2 5.30 495 1.8E-03 4.3E+02 2.2E-04 16 0.453 6770 0.04% 2.00 0.65 0.03% 0.006 0.34 0.079 0.765 0.98% 0.0016
7.546 5608.30 4.8 0.131 4.7 16.7 7.23 2.74%Slime Tailings 0.057 113.1 0.41 0.15 0.26 1 1.70 7.956 110.59 9.45 16 3.00% 2.8 71% 0.97 0.00 0.97 0 0.97 0.04 0.99 1.0 0.056 33.38 42.82 0.071 1.28 0.96 0.18 0.80 1.27 1.0 0.033 4.96 46.83 0.089 6.84 4.06 2 5.35 495 1.8E-03 4.3E+02 2.2E-04 16 0.454 6743 0.05% 2.00 0.65 0.03% 0.007 0.34 0.079 0.765 1.01% 0.0017
7.710 5608.14 5.1 0.119 5.0 19.0 8.22 2.35%Slime Tailings 0.057 113.1 0.42 0.15 0.27 1 1.70 8.415 116.97 10.01 17 2.56% 2.8 71% 0.98 0.00 0.98 0 0.97 0.05 0.99 1.0 0.056 33.57 43.58 0.072 1.29 0.96 0.18 0.80 1.26 1.0 0.033 4.48 44.87 0.087 6.62 3.95 2 5.40 495 1.8E-03 4.3E+02 2.2E-04 16 0.454 6717 0.05% 2.00 0.65 0.03% 0.007 0.34 0.079 0.765 1.04% 0.0017
7.874 5607.98 6.7 0.130 6.5 20.7 8.95 1.95%Slime Tailings 0.057 113.1 0.43 0.16 0.27 1 1.70 11.118 154.54 13.17 23 2.08% 2.6 71% 0.99 0.00 0.99 0 0.96 0.05 0.99 1.0 0.055 34.67 47.84 0.075 1.36 0.96 0.21 0.80 1.26 1.0 0.034 3.41 44.85 0.087 6.52 3.94 2 5.45 495 1.8E-03 4.3E+02 2.2E-04 16 0.454 6691 0.05% 2.00 0.65 0.03% 0.007 0.34 0.079 0.765 1.07% 0.0018
8.038 5607.81 7.3 0.077 7.3 16.0 6.91 1.05%Sand-Slime Tailing 0.059 119.0 0.44 0.16 0.28 1 1.70 12.325 171.32 14.51 25 1.11% 2.4 47% 1.00 0.00 1.00 0 0.96 0.05 0.99 1.0 0.055 35.39 49.90 0.077 1.40 0.96 0.22 0.80 1.25 1.0 0.034 2.44 35.45 0.080 5.84 3.62 2 5.50 495 1.8E-03 4.5E+02 2.2E-04 10 0.203 8097 0.04% 2.00 0.65 0.03% 0.005 0.34 0.079 0.765 0.70% 0.0011
8.202 5607.65 8.5 0.080 8.4 14.3 6.19 0.94%Sand-Slime Tailing 0.059 119.0 0.45 0.17 0.28 1 1.70 14.297 198.73 16.78 28 0.99% 2.4 47% 1.01 0.00 1.01 0 0.96 0.05 0.99 1.0 0.055 36.19 52.97 0.080 1.46 0.96 0.24 0.80 1.25 1.0 0.034 2.14 35.85 0.080 5.77 3.61 2 5.55 495 1.8E-03 4.5E+02 2.2E-04 10 0.204 8064 0.04% 2.00 0.65 0.03% 0.005 0.34 0.079 0.765 0.73% 0.0012
8.366 5607.48 6.1 0.091 6.1 11.4 4.95 1.49%Slime Tailings 0.057 113.1 0.46 0.18 0.29 1 1.70 10.285 142.96 12.09 20 1.61% 2.6 71% 1.02 0.00 1.02 0 0.96 0.05 0.99 1.0 0.055 34.30 46.38 0.074 1.34 0.96 0.20 0.80 1.25 1.0 0.034 3.33 40.24 0.084 5.95 3.64 2 5.60 495 1.8E-03 4.3E+02 2.3E-04 16 0.456 6612 0.05% 2.00 0.65 0.03% 0.008 0.34 0.079 0.765 1.17% 0.0019
8.530 5607.32 4.7 0.067 4.7 13.0 5.62 1.41%Slime Tailings 0.057 113.1 0.47 0.18 0.29 1 1.70 7.922 110.12 9.36 15 1.57% 2.7 71% 1.03 0.00 1.03 0 0.96 0.04 0.99 1.0 0.055 33.35 42.71 0.071 1.29 0.96 0.18 0.80 1.24 1.0 0.034 4.02 37.64 0.081 5.71 3.50 2 5.65 495 1.8E-03 4.3E+02 2.3E-04 16 0.456 6588 0.05% 2.00 0.65 0.03% 0.008 0.34 0.079 0.765 1.19% 0.0020
8.694 5607.16 5.0 0.101 4.9 16.1 6.98 2.04%Slime Tailings 0.057 113.1 0.48 0.19 0.29 1 1.70 8.245 114.61 9.77 15 2.26% 2.8 71% 1.04 0.00 1.04 0 0.96 0.05 0.99 1.0 0.055 33.49 43.27 0.071 1.30 0.96 0.18 0.80 1.24 1.0 0.034 4.60 44.99 0.087 6.06 3.68 2 5.70 495 1.8E-03 4.3E+02 2.3E-04 16 0.457 6563 0.05% 2.00 0.65 0.03% 0.008 0.34 0.079 0.765 1.22% 0.0020
8.858 5606.99 5.0 0.075 4.9 20.4 8.84 1.49%Slime Tailings 0.057 113.1 0.49 0.19 0.30 1 1.70 8.364 116.26 9.97 15 1.65% 2.7 71% 1.05 0.00 1.05 0 0.96 0.05 0.99 1.0 0.055 33.56 43.52 0.072 1.30 0.96 0.18 0.80 1.24 1.0 0.034 4.00 39.87 0.083 5.68 3.49 2 5.75 495 1.8E-03 4.3E+02 2.4E-04 16 0.457 6539 0.05% 2.00 0.65 0.03% 0.008 0.34 0.079 0.765 1.25% 0.0021
9.022 5606.83 7.8 0.111 7.7 23.6 10.24 1.42%Slime Tailings 0.057 113.1 0.50 0.20 0.30 1 1.70 13.022 181.01 15.42 24 1.52% 2.5 71% 1.05 0.00 1.05 0 0.96 0.05 0.99 1.0 0.055 35.46 50.87 0.078 1.43 0.96 0.23 0.80 1.23 1.0 0.034 2.84 43.84 0.087 5.83 3.63 2 5.80 495 1.8E-03 4.3E+02 2.4E-04 16 0.458 6515 0.05% 2.00 0.65 0.03% 0.008 0.34 0.079 0.765 1.28% 0.0021
9.186 5606.66 8.8 0.109 8.7 14.2 6.17 1.24%Sand-Slime Tailing 0.059 119.0 0.51 0.20 0.31 1 1.70 14.739 204.87 17.29 27 1.32% 2.4 47% 1.06 0.00 1.06 0 0.96 0.05 0.99 1.0 0.055 36.37 53.66 0.081 1.48 0.96 0.24 0.80 1.23 1.0 0.034 2.50 43.16 0.086 5.71 3.60 2 5.85 495 1.8E-03 4.5E+02 2.3E-04 10 0.206 7885 0.04% 2.00 0.65 0.03% 0.006 0.34 0.079 0.765 0.91% 0.0015
9.350 5606.50 11.9 0.108 11.8 12.8 5.55 0.91%Sand-Slime Tailing 0.059 119.0 0.52 0.21 0.31 1 1.70 20.043 278.60 23.44 36 0.95% 2.3 47% 1.07 0.00 1.07 0 0.96 0.05 0.99 1.0 0.055 38.52 61.96 0.090 1.65 0.95 0.28 0.80 1.22 1.0 0.034 1.81 42.45 0.085 5.59 3.62 2 5.90 460 1.8E-03 3.9E+02 2.7E-04 10 0.207 7855 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.57% 0.0026
9.514 5606.34 10.3 0.138 10.2 9.1 3.92 1.35%Sand-Slime Tailing 0.059 119.0 0.53 0.21 0.32 1 1.70 17.340 241.03 20.25 31 1.42% 2.4 47% 1.08 0.00 1.08 0 0.95 0.05 0.99 1.0 0.054 37.40 57.65 0.085 1.57 0.95 0.26 0.80 1.22 1.0 0.034 2.36 47.79 0.090 5.79 3.68 2 5.95 460 1.8E-03 3.9E+02 2.7E-04 10 0.207 7826 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.60% 0.0026
9.678 5606.17 8.8 0.125 8.7 12.4 5.39 1.42%Sand-Slime Tailing 0.059 119.0 0.54 0.22 0.32 1 1.70 14.858 206.53 17.41 26 1.51% 2.5 47% 1.09 0.00 1.09 0 0.95 0.05 0.99 1.0 0.054 36.41 53.82 0.081 1.49 0.95 0.24 0.80 1.22 1.0 0.035 2.72 47.30 0.089 5.69 3.59 2 6.00 460 1.8E-03 3.9E+02 2.7E-04 10 0.208 7797 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.64% 0.0027
9.842 5606.01 7.8 0.130 7.7 15.8 6.85 1.68%Slime Tailings 0.057 113.1 0.55 0.22 0.33 1 1.70 13.022 181.01 15.32 22 1.80% 2.6 71% 1.10 0.00 1.10 0 0.95 0.05 0.99 1.0 0.054 35.42 50.74 0.078 1.44 0.95 0.23 0.80 1.21 1.0 0.035 3.25 49.79 0.091 5.75 3.59 2 6.05 460 1.8E-03 3.7E+02 2.9E-04 16 0.460 6396 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.12% 0.0035
10.006 5605.84 5.8 0.162 5.7 21.9 9.49 2.79%Slime Tailings 0.057 113.1 0.56 0.23 0.33 1 1.70 9.656 134.22 11.48 16 3.08% 2.8 71% 1.11 0.00 1.11 0 0.95 0.05 0.99 1.0 0.054 34.09 45.57 0.073 1.35 0.95 0.20 0.80 1.21 1.0 0.035 5.13 58.89 0.099 6.14 3.75 2 6.10 460 1.8E-03 3.7E+02 2.9E-04 16 0.460 6374 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.16% 0.0035
10.170 5605.68 6.7 0.084 6.5 21.8 9.43 1.26%Slime Tailings 0.057 113.1 0.57 0.23 0.33 1 1.70 11.101 154.30 13.16 18 1.38% 2.6 71% 1.12 0.00 1.12 0 0.95 0.05 0.99 1.0 0.054 34.67 47.83 0.075 1.39 0.95 0.21 0.80 1.21 1.0 0.035 3.29 43.25 0.086 5.27 3.33 2 6.15 460 1.8E-03 3.7E+02 2.9E-04 16 0.461 6353 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.20% 0.0036
10.335 5605.52 10.0 0.096 9.8 21.2 9.19 0.96%Sand-Slime Tailing 0.059 119.0 0.58 0.24 0.34 1 1.70 16.728 232.52 19.69 28 1.02% 2.4 47% 1.13 0.00 1.13 0 0.95 0.05 0.99 1.0 0.054 37.21 56.90 0.084 1.56 0.95 0.26 0.80 1.20 1.0 0.035 2.20 43.26 0.086 5.20 3.38 2 6.20 460 1.8E-03 3.9E+02 2.8E-04 10 0.210 7688 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.77% 0.0029
10.499 5605.35 8.9 0.103 8.8 20.2 8.74 1.16%Sand-Slime Tailing 0.059 119.0 0.59 0.24 0.34 1 1.70 14.892 207.00 17.54 24 1.24% 2.5 47% 1.14 0.00 1.14 0 0.95 0.05 0.99 1.0 0.054 36.45 54.00 0.081 1.51 0.95 0.24 0.80 1.20 1.0 0.035 2.60 45.66 0.088 5.26 3.38 2 6.25 460 1.8E-03 3.9E+02 2.8E-04 10 0.210 7661 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.81% 0.0030
10.663 5605.19 7.0 0.126 6.9 26.1 11.32 1.79%Slime Tailings 0.057 113.1 0.59 0.25 0.35 1 1.70 11.662 162.10 13.87 18 1.96% 2.7 71% 1.15 0.00 1.15 0 0.95 0.05 0.99 1.0 0.054 34.92 48.78 0.076 1.41 0.95 0.21 0.80 1.20 1.0 0.035 3.80 52.67 0.094 5.52 3.47 2 6.30 460 1.8E-03 3.7E+02 3.0E-04 16 0.462 6287 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.31% 0.0038
10.827 5605.02 7.3 0.113 7.1 29.0 12.55 1.55%Slime Tailings 0.057 113.1 0.60 0.25 0.35 1 1.70 12.087 168.01 14.40 19 1.69% 2.6 71% 1.16 0.00 1.16 0 0.95 0.05 0.99 1.0 0.054 35.10 49.50 0.077 1.43 0.95 0.22 0.80 1.20 1.0 0.035 3.49 50.26 0.092 5.36 3.39 2 6.35 460 1.8E-03 3.7E+02 3.0E-04 16 0.463 6266 0.09% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.34% 0.0038
10.991 5604.86 8.8 0.076 8.6 29.8 12.92 0.87%Sand-Slime Tailing 0.059 119.0 0.61 0.26 0.36 1 1.70 14.586 202.75 17.31 23 0.93% 2.4 47% 1.17 0.00 1.17 0 0.94 0.05 0.98 1.0 0.054 36.37 53.68 0.081 1.51 0.95 0.24 0.80 1.19 1.0 0.035 2.41 41.68 0.085 4.88 3.19 2 6.40 460 1.8E-03 3.9E+02 2.9E-04 10 0.211 7583 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.91% 0.0031
11.155 5604.70 10.2 0.109 10.0 19.3 8.38 1.07%Sand-Slime Tailing 0.059 119.0 0.62 0.26 0.36 1 1.70 17.068 237.25 20.06 26 1.14% 2.4 47% 1.18 0.00 1.18 0 0.94 0.05 0.98 1.0 0.054 37.34 57.40 0.085 1.59 0.95 0.26 0.80 1.19 1.0 0.035 2.37 47.58 0.090 5.10 3.34 2 6.45 460 1.8E-03 3.9E+02 2.9E-04 10 0.212 7557 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.95% 0.0032
11.319 5604.53 8.3 0.156 8.2 20.1 8.71 1.87%Slime Tailings 0.057 113.1 0.63 0.27 0.37 1 1.70 13.940 193.77 16.44 21 2.03% 2.6 71% 1.19 0.00 1.19 0 0.94 0.05 0.98 1.0 0.054 35.81 52.25 0.080 1.49 0.95 0.23 0.80 1.19 1.0 0.035 3.54 58.25 0.098 5.53 3.51 2 6.50 460 1.8E-03 3.7E+02 3.1E-04 16 0.464 6203 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.45% 0.0040
11.483 5604.37 7.8 0.195 7.6 32.3 13.99 2.49%Slime Tailings 0.057 113.1 0.64 0.27 0.37 1 1.70 12.971 180.30 15.46 19 2.71% 2.7 71% 1.20 0.00 1.20 0 0.94 0.05 0.98 1.0 0.054 35.47 50.94 0.078 1.47 0.95 0.23 0.80 1.18 1.0 0.035 4.27 66.05 0.107 5.94 3.70 2 6.55 460 1.8E-03 3.7E+02 3.1E-04 16 0.464 6183 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.49% 0.0041
11.647 5604.20 8.0 0.126 7.8 34.4 14.89 1.57%Slime Tailings 0.057 113.1 0.65 0.28 0.37 1 1.70 13.311 185.02 15.88 20 1.70% 2.6 71% 1.21 0.00 1.21 0 0.94 0.05 0.98 1.0 0.053 35.62 51.50 0.079 1.48 0.95 0.23 0.80 1.18 1.0 0.035 3.41 54.19 0.095 5.22 3.35 2 6.60 460 1.8E-03 3.7E+02 3.2E-04 16 0.465 6163 0.09% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.52% 0.0041
11.811 5604.04 9.1 0.108 8.9 32.1 13.92 1.19%Sand-Slime Tailing 0.059 119.0 0.66 0.28 0.38 1 1.70 15.045 209.13 17.87 22 1.29% 2.5 47% 1.22 0.00 1.22 0 0.94 0.05 0.98 1.0 0.053 36.57 54.44 0.082 1.54 0.95 0.24 0.80 1.18 1.0 0.035 2.80 50.01 0.092 4.98 3.26 2 6.65 460 1.8E-03 3.9E+02 3.0E-04 10 0.214 7460 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.08% 0.0034
11.975 5603.88 8.0 0.097 7.8 31.7 13.74 1.21%Sand-Slime Tailing 0.059 119.0 0.67 0.29 0.38 1 1.70 13.311 185.02 15.85 19 1.32% 2.6 47% 1.23 0.00 1.23 0 0.94 0.05 0.98 1.0 0.053 35.86 51.71 0.079 1.49 0.95 0.23 0.80 1.18 1.0 0.036 3.12 49.38 0.091 4.90 3.19 2 6.70 460 1.8E-03 3.9E+02 3.1E-04 10 0.214 7435 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.12% 0.0035
12.139 5603.71 7.7 0.106 7.5 40.4 17.50 1.37%Slime Tailings 0.057 113.1 0.68 0.29 0.39 1 1.70 12.682 176.28 15.23 18 1.51% 2.6 71% 1.24 0.00 1.24 0 0.94 0.05 0.98 1.0 0.053 35.39 50.62 0.078 1.47 0.95 0.23 0.80 1.17 1.0 0.036 3.42 52.15 0.093 4.96 3.21 2 6.75 460 1.8E-03 3.7E+02 3.2E-04 16 0.466 6104 0.10% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.64% 0.0043
12.303 5603.55 7.1 0.110 6.8 39.6 17.17 1.56%Slime Tailings 0.057 113.1 0.69 0.30 0.39 1 1.70 11.594 161.16 13.95 16 1.72% 2.7 71% 1.25 0.00 1.25 0 0.94 0.05 0.98 1.0 0.053 34.95 48.90 0.076 1.44 0.95 0.22 0.80 1.17 1.0 0.036 3.90 54.45 0.095 5.00 3.22 2 6.80 460 1.8E-03 3.7E+02 3.3E-04 16 0.466 6085 0.10% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.67% 0.0044
12.467 5603.38 6.8 0.107 6.6 37.4 16.22 1.57%Slime Tailings 0.057 113.1 0.70 0.30 0.40 1 1.70 11.169 155.25 13.43 15 1.75% 2.7 71% 1.25 0.00 1.25 0 0.93 0.05 0.98 1.0 0.053 34.77 48.20 0.076 1.43 0.95 0.21 0.80 1.17 1.0 0.036 4.07 54.72 0.095 4.96 3.20 2 6.85 460 1.8E-03 3.7E+02 3.3E-04 16 0.467 6067 0.10% 2.00 0.65 0.03% 0.018 0.34 0.079 0.765 2.71% 0.0044
12.631 5603.22 7.0 0.092 6.8 30.6 13.25 1.32%Slime Tailings 0.057 113.1 0.71 0.31 0.40 1 1.70 11.543 160.45 13.78 16 1.47% 2.7 71% 1.26 0.00 1.26 0 0.93 0.05 0.98 1.0 0.053 34.89 48.67 0.076 1.44 0.95 0.21 0.80 1.17 1.0 0.036 3.74 51.51 0.093 4.78 3.11 2 6.90 460 1.8E-03 3.7E+02 3.3E-04 16 0.467 6048 0.10% 2.00 0.65 0.03% 0.018 0.34 0.079 0.765 2.75% 0.0045
12.795 5603.05 6.2 0.105 6.0 36.6 15.85 1.68%Slime Tailings 0.057 113.1 0.72 0.31 0.40 1 1.70 10.234 142.25 12.34 14 1.90% 2.8 71% 1.27 0.00 1.27 0 0.93 0.05 0.98 1.0 0.053 34.38 46.72 0.074 1.41 0.95 0.20 0.80 1.16 1.0 0.036 4.56 56.24 0.097 4.93 3.17 2 6.95 460 1.8E-03 3.7E+02 3.3E-04 16 0.468 6030 0.10% 2.00 0.65 0.03% 0.018 0.34 0.079 0.765 2.78% 0.0046
12.959 5602.89 7.8 0.124 7.5 43.8 18.98 1.60%Slime Tailings 0.057 113.1 0.73 0.32 0.41 1 1.70 12.733 176.99 15.33 17 1.76% 2.7 71% 1.28 0.00 1.28 0 0.93 0.05 0.98 1.0 0.053 35.43 50.75 0.078 1.48 0.95 0.23 0.80 1.16 1.0 0.036 3.79 58.13 0.098 4.97 3.23 2 7.00 460 1.8E-03 3.7E+02 3.4E-04 16 0.468 6012 0.10% 2.00 0.65 0.03% 0.018 0.34 0.079 0.765 2.82% 0.0046
13.123 5602.73 10.5 0.147 10.3 32.1 13.89 1.40%Sand-Slime Tailing 0.059 119.0 0.74 0.32 0.41 1 1.70 17.493 243.15 20.71 24 1.51% 2.5 47% 1.29 0.00 1.29 0 0.93 0.05 0.98 1.0 0.053 37.57 58.28 0.086 1.64 0.95 0.26 0.80 1.16 1.0 0.036 2.87 59.45 0.100 4.98 3.31 2 7.05 460 1.8E-03 3.9E+02 3.2E-04 10 0.217 7277 0.09% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.36% 0.0039
13.287 5602.56 8.1 0.177 8.0 30.0 13.02 2.18%Slime Tailings 0.057 113.1 0.75 0.33 0.42 1 1.70 13.515 187.86 16.07 18 2.39% 2.7 71% 1.30 0.00 1.30 0 0.93 0.05 0.98 1.0 0.053 35.68 51.75 0.079 1.51 0.95 0.23 0.80 1.16 1.0 0.036 4.27 68.65 0.110 5.46 3.48 2 7.10 460 1.8E-03 3.7E+02 3.4E-04 16 0.469 5976 0.11% 2.00 0.65 0.03% 0.019 0.34 0.079 0.765 2.90% 0.0047
13.451 5602.40 6.8 0.135 6.6 34.3 14.86 1.98%Slime Tailings 0.057 113.1 0.75 0.33 0.42 1 1.70 11.237 156.19 13.47 14 2.22% 2.8 71% 1.31 0.00 1.31 0 0.93 0.05 0.98 1.0 0.052 34.78 48.25 0.076 1.44 0.95 0.21 0.80 1.15 1.0 0.036 4.72 63.58 0.104 5.10 3.27 2 7.15 460 1.8E-03 3.7E+02 3.4E-04 16 0.469 5958 0.11% 2.00 0.65 0.03% 0.019 0.34 0.079 0.765 2.93% 0.0048
13.615 5602.23 7.9 0.138 7.7 36.4 15.78 1.74%Slime Tailings 0.057 113.1 0.76 0.34 0.43 1 1.70 13.073 181.71 15.63 17 1.93% 2.7 71% 1.32 0.00 1.32 0 0.93 0.05 0.98 1.0 0.052 35.53 51.16 0.079 1.50 0.94 0.23 0.80 1.15 1.0 0.036 4.01 62.70 0.103 5.01 3.25 2 7.20 460 1.8E-03 3.7E+02 3.5E-04 16 0.469 5941 0.11% 2.00 0.65 0.03% 0.019 0.34 0.079 0.765 2.97% 0.0049
13.779 5602.07 6.3 0.125 6.2 26.0 11.28 1.97%Slime Tailings 0.057 113.1 0.77 0.34 0.43 1 1.70 10.489 145.80 12.50 13 2.25% 2.8 71% 1.33 0.00 1.33 0 0.92 0.05 0.98 1.0 0.052 34.44 46.95 0.075 1.43 0.94 0.20 0.80 1.15 1.0 0.036 5.08 63.48 0.104 5.00 3.21 2 7.25 460 1.8E-03 3.7E+02 3.5E-04 16 0.470 5924 0.11% 2.00 0.65 0.03% 0.020 0.34 0.079 0.765 3.01% 0.0049
13.943 5601.91 8.1 0.120 7.9 29.9 12.95 1.49%Slime Tailings 0.057 113.1 0.78 0.35 0.43 1 1.70 13.413 186.44 15.95 17 1.65% 2.7 71% 1.34 0.00 1.34 0 0.92 0.05 0.98 1.0 0.052 35.64 51.59 0.079 1.51 0.94 0.23 0.80 1.15 1.0 0.036 3.74 59.68 0.100 4.76 3.14 2 7.30 460 1.8E-03 3.7E+02 3.5E-04 16 0.470 5907 0.11% 2.00 0.65 0.03% 0.020 0.34 0.079 0.765 3.04% 0.0050
14.107 5601.74 16.0 0.167 16.0 7.3 3.14 1.04%Sand-Slime Tailing 0.059 119.0 0.79 0.35 0.44 1 1.63 26.112 362.96 30.41 35 1.09% 2.3 47% 1.35 0.00 1.35 0 0.92 0.06 0.97 1.0 0.052 40.97 71.38 0.101 1.95 0.94 0.32 0.80 1.14 1.0 0.036 1.96 59.56 0.100 4.71 3.33 2 7.35 460 1.8E-03 3.9E+02 3.4E-04 10 0.219 7149 0.09% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.58% 0.0042
14.271 5601.58 12.3 0.154 12.2 9.6 4.16 1.25%Sand-Slime Tailing 0.059 119.0 0.80 0.36 0.44 1 1.66 20.342 282.76 23.74 26 1.34% 2.5 47% 1.36 0.00 1.36 0 0.92 0.05 0.97 1.0 0.052 38.63 62.37 0.091 1.74 0.94 0.28 0.80 1.14 1.0 0.036 2.56 60.83 0.101 4.72 3.23 2 7.40 460 1.8E-03 3.9E+02 3.4E-04 10 0.220 7128 0.10% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.62% 0.0043
14.436 5601.41 9.4 0.143 9.3 15.0 6.48 1.52%Sand-Slime Tailing 0.059 119.0 0.81 0.36 0.45 1 1.67 15.535 215.94 18.22 19 1.66% 2.6 47% 1.37 0.00 1.37 0 0.92 0.05 0.98 1.0 0.052 36.69 54.92 0.082 1.59 0.94 0.25 0.80 1.14 1.0 0.036 3.44 62.76 0.103 4.77 3.18 2 7.45 460 1.8E-03 3.9E+02 3.4E-04 10 0.220 7107 0.10% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.66% 0.0044
14.600 5601.25 7.8 0.109 7.7 29.2 12.64 1.39%Slime Tailings 0.057 113.1 0.82 0.37 0.45 1 1.66 12.673 176.16 15.07 16 1.55% 2.7 71% 1.38 0.00 1.38 0 0.92 0.05 0.98 1.0 0.052 35.34 50.41 0.078 1.50 0.94 0.22 0.80 1.14 1.0 0.037 3.86 58.13 0.098 4.51 3.01 2 7.50 500 1.8E-03 4.4E+02 3.1E-04 16 0.472 5838 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.16% 0.0035
14.764 5601.09 7.9 0.092 7.6 52.5 22.75 1.16%Sand-Slime Tailing 0.059 119.0 0.83 0.37 0.46 1 1.64 12.474 173.39 15.11 16 1.30% 2.6 47% 1.39 0.00 1.39 0 0.92 0.05 0.98 1.0 0.052 35.60 50.72 0.078 1.51 0.94 0.22 0.80 1.14 1.0 0.037 3.58 54.12 0.095 4.31 2.91 2 7.55 500 1.8E-03 4.6E+02 2.9E-04 10 0.221 7066 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.76% 0.0029
14.928 5600.92 7.5 0.153 7.1 63.0 27.30 2.03%Slime Tailings 0.057 113.1 0.84 0.38 0.46 1 1.63 11.651 161.95 14.28 15 2.29% 2.8 71% 1.40 0.00 1.40 0 0.92 0.05 0.98 1.0 0.052 35.06 49.34 0.077 1.49 0.94 0.22 0.80 1.13 1.0 0.037 4.75 67.81 0.109 4.91 3.20 2 7.60 500 1.8E-03 4.4E+02 3.1E-04 16 0.472 5805 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.22% 0.0036
15.092 5600.76 7.7 0.237 7.3 69.8 30.26 3.08%Slime Tailings 0.057 113.1 0.85 0.39 0.46 1 1.62 11.780 163.74 14.50 15 3.46% 2.9 71% 1.41 0.00 1.41 0 0.91 0.05 0.98 1.0 0.052 35.14 49.64 0.077 1.49 0.94 0.22 0.80 1.13 1.0 0.037 5.66 82.06 0.131 5.87 3.68 2 7.65 500 1.8E-03 4.4E+02 3.1E-04 16 0.473 5790 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.25% 0.0037
15.256 5600.59 9.1 0.255 9.0 23.2 10.06 2.79%Slime Tailings 0.057 113.1 0.86 0.39 0.47 1 1.61 14.482 201.30 17.09 18 3.08% 2.8 71% 1.41 0.00 1.41 0 0.91 0.05 0.97 1.0 0.051 36.04 53.13 0.081 1.57 0.94 0.24 0.80 1.13 1.0 0.037 4.81 82.21 0.132 5.83 3.70 2 7.70 500 1.8E-03 4.4E+02 3.1E-04 16 0.473 5774 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.28% 0.0037
15.420 5600.43 10.0 0.246 9.8 31.0 13.41 2.45%Slime Tailings 0.057 113.1 0.87 0.40 0.47 1 1.60 15.709 218.35 18.60 19 2.69% 2.7 71% 1.42 0.00 1.42 0 0.91 0.05 0.97 1.0 0.051 36.57 55.17 0.083 1.61 0.94 0.25 0.80 1.13 1.0 0.037 4.26 79.34 0.126 5.55 3.58 2 7.75 500 1.8E-03 4.4E+02 3.2E-04 16 0.474 5758 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.30% 0.0038
15.584 5600.27 9.3 0.199 9.1 28.5 12.35 2.14%Slime Tailings 0.057 113.1 0.88 0.40 0.48 1 1.59 14.475 201.20 17.14 18 2.36% 2.7 71% 1.43 0.00 1.43 0 0.91 0.05 0.97 1.0 0.051 36.06 53.20 0.081 1.57 0.94 0.24 0.80 1.13 1.0 0.037 4.26 73.00 0.116 5.06 3.32 2 7.80 500 1.8E-03 4.4E+02 3.2E-04 16 0.474 5743 0.09% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.33% 0.0038
15.748 5600.10 9.5 0.138 9.2 48.8 21.16 1.45%Sand-Slime Tailing 0.059 119.0 0.89 0.41 0.48 1 1.58 14.476 201.21 17.37 18 1.60% 2.6 47% 1.44 0.00 1.44 0 0.91 0.05 0.97 1.0 0.051 36.39 53.76 0.081 1.59 0.94 0.24 0.80 1.12 1.0 0.037 3.55 61.75 0.102 4.40 2.99 2 7.85 500 1.8E-03 4.6E+02 3.0E-04 10 0.223 6951 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.92% 0.0032
15.912 5599.94 9.5 0.075 9.3 47.2 20.47 0.79%Sand-Slime Tailing 0.059 119.0 0.90 0.41 0.49 1 1.56 14.461 201.01 17.33 18 0.87% 2.5 47% 1.45 0.00 1.45 0 0.91 0.05 0.97 1.0 0.051 36.38 53.71 0.081 1.59 0.94 0.24 0.80 1.12 1.0 0.037 2.79 48.31 0.090 3.86 2.72 2 7.90 500 1.8E-03 4.6E+02 3.1E-04 10 0.223 6931 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.95% 0.0032
16.076 5599.77 10.5 0.072 10.3 43.2 18.73 0.68%Sand-Slime Tailing 0.059 119.0 0.91 0.42 0.49 1 1.55 15.937 221.53 19.00 20 0.75% 2.4 47% 1.46 0.00 1.46 0 0.91 0.05 0.97 1.0 0.051 36.96 55.96 0.083 1.64 0.94 0.25 0.80 1.12 1.0 0.037 2.47 46.86 0.089 3.77 2.70 2 7.95 500 1.8E-03 4.6E+02 3.1E-04 10 0.224 6912 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.98% 0.0032
16.240 5599.61 29.3 0.191 29.0 50.3 21.81 0.65%Sand-Slime Tailing 0.059 119.0 0.92 0.42 0.50 1 1.43 41.329 574.48 48.52 57 0.67% 2.0 47% 1.47 0.00 1.47 0 0.91 0.07 0.96 1.0 0.050 47.32 95.84 0.136 2.70 0.94 0.40 0.80 1.12 1.0 0.037 1.31 63.59 0.104 4.36 3.53 2 8.00 500 1.8E-03 4.6E+02 3.1E-04 10 0.224 6893 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 2.01% 0.0033
16.404 5599.45 22.6 0.359 22.6 8.2 3.54 1.59%Sand-Slime Tailing 0.059 119.0 0.93 0.43 0.50 1 1.45 32.779 455.63 38.16 43 1.65% 2.3 47% 1.48 0.00 1.48 0 0.90 0.06 0.97 1.0 0.050 43.68 81.84 0.115 2.28 0.94 0.36 0.80 1.11 1.0 0.037 2.05 78.17 0.124 5.18 3.73 2 8.05 500 1.8E-03 4.6E+02 3.1E-04 10 0.225 6874 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 2.04% 0.0033
16.568 5599.28 14.1 0.339 14.0 14.0 6.07 2.40%Slime Tailings 0.057 113.1 0.94 0.43 0.50 1 1.50 21.048 292.57 24.60 26 2.57% 2.6 71% 1.49 0.00 1.49 0 0.90 0.06 0.97 1.0 0.051 38.65 63.25 0.092 1.81 0.94 0.29 0.80 1.11 1.0 0.037 3.46 85.09 0.137 5.67 3.74 2 8.10 500 1.8E-03 4.4E+02 3.3E-04 16 0.476 5650 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.51% 0.0041
16.732 5599.12 8.8 0.276 8.7 23.2 10.05 3.13%Slime Tailings 0.057 113.1 0.94 0.44 0.51 1 1.51 13.104 182.14 15.47 16 3.50% 2.9 71% 1.50 0.00 1.50 0 0.90 0.05 0.97 1.0 0.051 35.48 50.95 0.078 1.55 0.94 0.23 0.80 1.11 1.0 0.037 5.53 85.58 0.138 5.67 3.61 2 8.15 500 1.8E-03 4.4E+02 3.3E-04 16 0.476 5636 0.09% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.54% 0.0042
16.896 5598.95 8.5 0.184 8.2 42.7 18.51 2.17%Slime Tailings 0.057 113.1 0.95 0.44 0.51 1 1.50 12.346 171.60 14.80 15 2.44% 2.8 71% 1.51 0.00 1.51 0 0.90 0.05 0.97 1.0 0.051 35.24 50.05 0.078 1.53 0.94 0.22 0.80 1.11 1.0 0.037 4.85 71.80 0.114 4.65 3.09 2 8.20 500 1.8E-03 4.4E+02 3.4E-04 16 0.477 5621 0.09% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.57% 0.0042
17.060 5598.79 8.5 0.183 8.2 54.7 23.72 2.15%Slime Tailings 0.057 113.1 0.96 0.45 0.52 1 1.49 12.178 169.28 14.74 15 2.42% 2.8 71% 1.52 0.00 1.52 0 0.90 0.05 0.97 1.0 0.051 35.22 49.96 0.077 1.53 0.94 0.22 0.80 1.11 1.0 0.037 4.86 71.61 0.114 4.61 3.07 2 8.25 500 1.8E-03 4.4E+02 3.4E-04 16 0.477 5607 0.10% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.59% 0.0043
17.224 5598.63 8.3 0.174 7.9 66.5 28.82 2.09%Slime Tailings 0.057 113.1 0.97 0.45 0.52 1 1.48 11.717 162.87 14.32 14 2.37% 2.8 71% 1.53 0.00 1.53 0 0.90 0.05 0.97 1.0 0.050 35.08 49.40 0.077 1.52 0.94 0.22 0.80 1.11 1.0 0.037 4.91 70.38 0.112 4.50 3.01 2 8.30 500 1.8E-03 4.4E+02 3.4E-04 16 0.477 5593 0.10% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.62% 0.0043
WHITE MESA TAILINGS REPOSITORY LIQUEFACTION AND SEISMIC SETTLEMENT ANALYSES - 2W2
TOTAL SEISMIC SETTLEMENT (FT):
Scaling Factor for stress ration, rm
Volumetric Strain Ratio for Site-Specific Design Earth
Shear
Strain, γ
Kc qc1n-cs
(CRR)
M=7.5,
s'v=1atm
g1 g2
Plastici
ty Index, PI
Effective Stress at t1
Total Stress at t1
Saturated at t1
Idriss & Boulanger (2008) Youd et al. (2001)
Liquefiable?1=Yes
2=No
Cyclic Stress Ratio
FoS
Cyclic Stress Ratio
FoS
CSR
M=7.5,
s'v=1atm
∆qc1n qc1n-cs
(CRR)
M=7.5,
s'v=1atm
CSR
M=7.5,
s'v=1atm
Magnitude Scaling Factor, MSF:
Pw (u2)Pw (u2)
2013 CPT Data from ConeTec CPT Data Interpretations
fs/qt
Material
Type (as determined by fines
Unit Weight Unit Weight
Total
Stress
at time of CPT
Depth
at time of CPT Elevation qt fs qc
Effective
Stress at
time of CPT
Saturated
at time of CPT CN qc1 qc1 qc1N
Normalized
Cone
Penetration Resistance, Qt
Normalize
d Friction
Ratio, Fr (%)
Type Index,
Ic b
Threshhol
d Shear
Strain, γtv (%)R
Youd, et al (2001)
Shear Wave Velocity, Vs
Soil Density, ρ
Maximum Shear Strain
Modulus,
Gmax
Max. Horiz. Acceleration, Amax/g: 0.15
Earthquake Moment Magnitude, M: 5.5
Magnitude Scaling Factor, MSF:
Equil
Pore
Pressure at time of
Conditions at t1 Liquefaction Triggering AnalysesEquil
Pore Pressure at t1FC
Cyclic Resistance Ratio
a
a
Shear Wave Velocity, Vs
Total Stress at Midpoint of Layer
Equil Pore Pressure at Midpoint of Layer (tsf)
Effective Stress at Midpoint of Layer
Midpoint Depth at t1, z1
Equiv. Number of Uniform Strain Cycles, N
Depth at t1, z1
Erosion Protection Layer
Water Storage/Rooting Zone Layer
High Compaction Layer
Platform/Random Fill Layer
FINAL COVER
Elev. at Top of Layer (ft)
Elev. At Midpoint of Layer (ft)
Elev. At Bottom of Layer
Thickness of Layer (ft)
Unit Weight (tcf)
Unit Weight (pcf)
Total Stress at Bottom of Layer
Equil Pore Pressure at Bottom of Layer
Effective Stress at Bottom of Layer
P =
γeff*(Geff/Gmax)
Soil Density, ρ (tcf)
Max Shear
Strain
Modulus,
Gmax (tsf)
P = γeff*(Geff
/Gmax)
(tsf)
Idriss and Boulanger (2008)
Max. Horiz. Acceleration, Amax/g:
Earthquake Moment Magnitude, M:
Volumetric
Strain for
Design
Event, εv (%)
Volumetric Strain for Design Event, εv (%)
Incremental Consolidation (ft)
Incrementa
l Consolidation (ft)
Seismic Settlement Analysis - Stewart et al (2004)
R CN
CN
c
c
b
Threshhol
d Shear Strain, γtv
(%)
Volumetric Strain at 15 Cycles, εc-15 (%)
Volumetri
c Strain at
15 Cycles,
εc-15 (%)
Plasticity Index, PI g1 g2
Shear Strain, γ (%)
Liquef_SeismicSettle_30Aug2015.xls Page 4 of 29
Energy Fuels Resources (USA) Inc.White Mesa Mill
Seismic Settlement Analyses
Data File: 13-52106_SP2W2-BSC-CPT 5613.10 Water surface elevation during CPT investigation (ft a5615.85 Ground Surface Elevation at time of CPT (ft amsl)
Location: White Mesa 2013 CPT Investigation 0.15 5607.57 Water surface elevation at t0 (ft amsl)5625.87 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl)
..\..\..\6.2.3 Field Data\2013 Field Investigation\Conetec Dat 5.5 5598.51 Water surface elevation at t1 (ft amsl) 0.50 Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after plac ###### 5625.62 5625.37 0.50 0.055 110 0.028 0.014 0.00 0.00 0.028 0.014 0.08 508 1.7E-03 4.4E+02 3.0E-06 11 0.068 46696 0.00% 1.20 0.80 0.04% 0.000 0.32 0.133 0.778 0.00% 0.0000
Tailings Sands 1.69 5593.51 Water surface elevation at t2 (ft amsl)3.50 Thickness of Water Storage/Rooting Zone (ft)###### 5623.62 5621.87 3.50 0.054 107 0.215 0.121 0.00 0.00 0.215 0.121 0.69 508 1.7E-03 4.3E+02 2.8E-05 11 0.118 18930 0.00% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
Tailings Sand-Slimes 4.00 Thickness of High Compaction Layer (ft)###### 5619.87 5617.87 4.00 0.060 120 0.454 0.334 0.00 0.00 0.454 0.334 1.83 508 1.9E-03 4.8E+02 6.8E-05 11 0.153 12419 0.01% 0.65 0.75 0.02% 0.000 0.34 0.079 0.765 0.00% 0.0000
Tailings Slimes 1.44 2.02 Thickness of Random/Platform Fill on on top of existing interim cover (ft) ###### 5616.86 5615.85 2.02 0.050 101 0.556 0.505 0.00 0.00 0.556 0.505 2.75 508 1.6E-03 4.0E+02 1.2E-04 11 0.170 10466 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
Interim Cover 0.47 1111.60 Additional Stress due to Final Cover Placement, ΔσFC (psf)
Cells Requiring User Input/Manipulation 2.21 2.21 7.51 5593.51 Elevation of bottom of tailings (liner) (ft amsl)
0.347
rd Cσ Kσ Ka rd Dr f Kσ Ka Avg
(ft) (ft amsl) TSF TSF TSF (ft) PSI (%) (tcf) (pcf) (tsf)(tsf)(tsf) 1=Yes TSF MPa % (tsf)(tsf)(tsf) 1=Yes FoS m
0=No 0=No (ft/sec) (tcf) tsf tsf (%)
WHITE MESA TAILINGS REPOSITORY LIQUEFACTION AND SEISMIC SETTLEMENT ANALYSES - 2W2
TOTAL SEISMIC SETTLEMENT (FT):
Scaling Factor for stress ration, rm
Volumetric Strain Ratio for Site-Specific Design Earth
Shear
Strain, γ
Kc qc1n-cs
(CRR)
M=7.5,
s'v=1atm
g1 g2
Plastici
ty Index, PI
Effective Stress at t1
Total Stress at t1
Saturated at t1
Idriss & Boulanger (2008) Youd et al. (2001)
Liquefiable?1=Yes
2=No
Cyclic Stress Ratio
FoS
Cyclic Stress Ratio
FoS
CSR
M=7.5,
s'v=1atm
∆qc1n qc1n-cs
(CRR)
M=7.5,
s'v=1atm
CSR
M=7.5,
s'v=1atm
Magnitude Scaling Factor, MSF:
Pw (u2)Pw (u2)
2013 CPT Data from ConeTec CPT Data Interpretations
fs/qt
Material
Type (as determined by fines
Unit Weight Unit Weight
Total
Stress
at time of CPT
Depth
at time of CPT Elevation qt fs qc
Effective
Stress at
time of CPT
Saturated
at time of CPT CN qc1 qc1 qc1N
Normalized
Cone
Penetration Resistance, Qt
Normalize
d Friction
Ratio, Fr (%)
Type Index,
Ic b
Threshhol
d Shear
Strain, γtv (%)R
Youd, et al (2001)
Shear Wave Velocity, Vs
Soil Density, ρ
Maximum Shear Strain
Modulus,
Gmax
Max. Horiz. Acceleration, Amax/g: 0.15
Earthquake Moment Magnitude, M: 5.5
Magnitude Scaling Factor, MSF:
Equil
Pore
Pressure at time of
Conditions at t1 Liquefaction Triggering AnalysesEquil
Pore Pressure at t1FC
Cyclic Resistance Ratio
a
a
Shear Wave Velocity, Vs
Total Stress at Midpoint of Layer
Equil Pore Pressure at Midpoint of Layer (tsf)
Effective Stress at Midpoint of Layer
Midpoint Depth at t1, z1
Equiv. Number of Uniform Strain Cycles, N
Depth at t1, z1
Erosion Protection Layer
Water Storage/Rooting Zone Layer
High Compaction Layer
Platform/Random Fill Layer
FINAL COVER
Elev. at Top of Layer (ft)
Elev. At Midpoint of Layer (ft)
Elev. At Bottom of Layer
Thickness of Layer (ft)
Unit Weight (tcf)
Unit Weight (pcf)
Total Stress at Bottom of Layer
Equil Pore Pressure at Bottom of Layer
Effective Stress at Bottom of Layer
P =
γeff*(Geff/Gmax)
Soil Density, ρ (tcf)
Max Shear
Strain
Modulus,
Gmax (tsf)
P = γeff*(Geff
/Gmax)
(tsf)
Idriss and Boulanger (2008)
Max. Horiz. Acceleration, Amax/g:
Earthquake Moment Magnitude, M:
Volumetric
Strain for
Design
Event, εv (%)
Volumetric Strain for Design Event, εv (%)
Incremental Consolidation (ft)
Incrementa
l Consolidation (ft)
Seismic Settlement Analysis - Stewart et al (2004)
R CN
CN
c
c
b
Threshhol
d Shear Strain, γtv
(%)
Volumetric Strain at 15 Cycles, εc-15 (%)
Volumetri
c Strain at
15 Cycles,
εc-15 (%)
Plasticity Index, PI g1 g2
Shear Strain, γ (%)
17.388 5598.46 9.6 0.196 9.2 57.7 25.02 2.05%Slime Tailings 0.057 113.1 0.98 0.46 0.53 1 1.47 13.529 188.05 16.33 16 2.29% 2.8 71% 1.54 0.00 1.54 1 0.90 0.05 0.97 1.0 0.050 35.77 52.10 0.080 1.58 0.94 0.23 0.80 1.10 1.0 0.037 4.41 72.07 0.115 4.56 3.07 2 8.35 500 1.8E-03 4.4E+02 3.4E-04 16 0.478 5582 0.10% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.65% 0.0044
17.552 5598.30 8.9 0.209 8.4 74.2 32.14 2.35%Slime Tailings 0.057 113.1 0.99 0.46 0.53 1 1.46 12.319 171.23 15.09 15 2.65% 2.8 71% 1.55 0.01 1.54 1 0.90 0.05 0.97 1.0 0.051 35.34 50.44 0.078 1.54 0.94 0.22 0.80 1.10 1.0 0.038 4.99 75.30 0.120 4.70 3.12 2 8.40 500 1.8E-03 4.4E+02 3.4E-04 16 0.478 5575 0.10% 2.00 0.65 0.03% 0.018 0.34 0.079 0.765 2.69% 0.0044
17.716 5598.13 9.1 0.199 8.7 67.5 29.25 2.19%Slime Tailings 0.057 113.1 1.00 0.47 0.53 1 1.45 12.622 175.44 15.37 15 2.46% 2.8 71% 1.56 0.01 1.54 1 0.89 0.05 0.97 1.0 0.051 35.44 50.81 0.078 1.55 0.94 0.23 0.80 1.10 1.0 0.038 4.77 73.31 0.117 4.53 3.04 2 8.45 500 1.8E-03 4.4E+02 3.5E-04 16 0.478 5569 0.10% 2.00 0.65 0.03% 0.018 0.34 0.079 0.765 2.72% 0.0045
17.880 5597.97 9.1 0.170 8.7 60.5 26.22 1.88%Slime Tailings 0.057 113.1 1.01 0.47 0.54 1 1.45 12.545 174.38 15.20 15 2.11% 2.8 71% 1.57 0.02 1.55 1 0.89 0.05 0.97 1.0 0.051 35.38 50.59 0.078 1.54 0.93 0.23 0.80 1.10 1.0 0.038 4.50 68.48 0.110 4.22 2.88 2 8.50 500 1.8E-03 4.4E+02 3.5E-04 16 0.478 5563 0.10% 2.00 0.65 0.03% 0.018 0.34 0.079 0.765 2.75% 0.0045
18.044 5597.81 9.4 0.142 9.0 57.5 24.92 1.52%Sand-Slime Tailing 0.059 119.0 1.02 0.48 0.54 1 1.44 12.921 179.60 15.61 15 1.70% 2.7 47% 1.58 0.02 1.55 1 0.89 0.05 0.97 1.0 0.051 35.77 51.38 0.079 1.55 0.93 0.23 0.80 1.10 1.0 0.038 4.03 62.94 0.103 3.92 2.74 2 8.55 500 1.8E-03 4.6E+02 3.3E-04 10 0.227 6742 0.09% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.33% 0.0038
18.208 5597.64 8.7 0.209 8.3 57.7 25.02 2.41%Slime Tailings 0.057 113.1 1.03 0.48 0.55 1 1.43 11.845 164.64 14.35 14 2.74% 2.9 71% 1.58 0.03 1.56 1 0.89 0.05 0.97 1.0 0.051 35.09 49.44 0.077 1.51 0.93 0.22 0.80 1.10 1.0 0.038 5.27 75.69 0.120 4.53 3.02 2 8.60 500 1.8E-03 4.4E+02 3.5E-04 16 0.479 5550 0.10% 2.00 0.65 0.03% 0.018 0.34 0.079 0.765 2.82% 0.0046
18.372 5597.48 10.0 0.260 9.5 72.0 31.20 2.61%Slime Tailings 0.057 113.1 1.04 0.49 0.55 1 1.42 13.491 187.53 16.41 16 2.91% 2.8 71% 1.59 0.03 1.56 1 0.89 0.05 0.97 1.0 0.051 35.80 52.21 0.080 1.56 0.93 0.23 0.80 1.09 1.0 0.038 4.95 81.19 0.130 4.83 3.20 2 8.65 500 1.8E-03 4.4E+02 3.5E-04 16 0.479 5544 0.11% 2.00 0.65 0.03% 0.019 0.34 0.079 0.765 2.86% 0.0047
18.537 5597.31 10.6 0.320 10.3 54.3 23.51 3.02%Slime Tailings 0.057 113.1 1.05 0.49 0.55 1 1.41 14.484 201.33 17.38 17 3.35% 2.8 71% 1.60 0.04 1.57 1 0.89 0.05 0.97 1.0 0.051 36.14 53.52 0.081 1.59 0.93 0.24 0.80 1.09 1.0 0.039 5.08 88.30 0.144 5.31 3.45 2 8.70 500 1.8E-03 4.4E+02 3.6E-04 16 0.479 5538 0.11% 2.00 0.65 0.03% 0.019 0.34 0.079 0.765 2.89% 0.0047
18.701 5597.15 12.3 0.297 12.1 37.1 16.09 2.42%Slime Tailings 0.057 113.1 1.06 0.50 0.56 1 1.40 16.910 235.04 20.02 20 2.64% 2.7 71% 1.61 0.04 1.57 1 0.89 0.05 0.97 1.0 0.051 37.06 57.08 0.085 1.66 0.93 0.26 0.80 1.09 1.0 0.039 4.13 82.75 0.133 4.84 3.25 2 8.75 500 1.8E-03 4.4E+02 3.6E-04 16 0.479 5532 0.11% 2.00 0.65 0.03% 0.019 0.34 0.079 0.765 2.92% 0.0048
18.865 5596.99 17.2 0.199 17.1 20.4 8.85 1.16%Sand-Slime Tailing 0.059 119.0 1.07 0.50 0.56 1 1.37 23.404 325.31 27.38 29 1.23% 2.4 47% 1.62 0.05 1.57 1 0.89 0.06 0.97 1.0 0.051 39.91 67.29 0.096 1.89 0.93 0.30 0.80 1.09 1.0 0.039 2.32 63.52 0.104 3.75 2.82 2 8.80 500 1.8E-03 4.6E+02 3.4E-04 10 0.228 6704 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.49% 0.0041
19.029 5596.82 16.8 0.219 16.7 20.1 8.71 1.31%Sand-Slime Tailing 0.059 119.0 1.08 0.51 0.57 1 1.36 22.707 315.63 26.57 28 1.39% 2.4 47% 1.63 0.05 1.58 1 0.88 0.06 0.97 1.0 0.051 39.62 66.19 0.095 1.86 0.93 0.30 0.80 1.09 1.0 0.039 2.50 66.55 0.107 3.83 2.85 2 8.85 500 1.8E-03 4.6E+02 3.4E-04 10 0.228 6696 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.52% 0.0041
19.193 5596.66 15.5 0.212 15.4 19.4 8.42 1.37%Sand-Slime Tailing 0.059 119.0 1.09 0.51 0.57 1 1.36 20.954 291.26 24.53 25 1.47% 2.5 47% 1.64 0.06 1.58 1 0.88 0.06 0.97 1.0 0.051 38.90 63.43 0.092 1.79 0.93 0.29 0.80 1.08 1.0 0.039 2.72 66.83 0.108 3.80 2.80 2 8.90 500 1.8E-03 4.6E+02 3.5E-04 10 0.228 6687 0.09% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.56% 0.0042
19.357 5596.49 11.9 0.188 11.8 28.4 12.32 1.58%Sand-Slime Tailing 0.059 119.0 1.10 0.52 0.58 1 1.37 16.059 223.22 18.93 19 1.74% 2.6 47% 1.65 0.06 1.59 1 0.88 0.05 0.97 1.0 0.051 36.94 55.88 0.083 1.63 0.93 0.25 0.80 1.08 1.0 0.039 3.56 67.47 0.109 3.79 2.71 2 8.95 500 1.8E-03 4.6E+02 3.5E-04 10 0.229 6679 0.09% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.59% 0.0043
19.521 5596.33 10.5 0.213 10.3 42.0 18.18 2.02%Slime Tailings 0.057 113.1 1.10 0.52 0.58 1 1.36 13.972 194.20 16.64 16 2.26% 2.8 71% 1.66 0.07 1.59 1 0.88 0.05 0.97 1.0 0.051 35.88 52.52 0.080 1.56 0.93 0.24 0.80 1.08 1.0 0.040 4.40 73.27 0.117 4.03 2.79 2 9.00 500 1.8E-03 4.4E+02 3.7E-04 16 0.480 5499 0.12% 2.00 0.65 0.03% 0.020 0.34 0.079 0.765 3.10% 0.0051
19.685 5596.17 10.7 0.236 10.3 60.5 26.21 2.21%Slime Tailings 0.057 113.1 1.11 0.53 0.59 1 1.35 13.907 193.31 16.75 16 2.47% 2.8 71% 1.67 0.07 1.60 1 0.88 0.05 0.97 1.0 0.051 35.92 52.66 0.080 1.56 0.93 0.24 0.80 1.08 1.0 0.040 4.57 76.54 0.122 4.17 2.86 2 9.05 538 1.8E-03 5.1E+02 3.2E-04 16 0.480 5493 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.24% 0.0037
19.849 5596.00 13.4 0.216 13.1 40.2 17.42 1.62%Sand-Slime Tailing 0.059 119.0 1.12 0.53 0.59 1 1.34 17.596 244.59 20.83 21 1.77% 2.6 47% 1.68 0.08 1.60 1 0.88 0.05 0.97 1.0 0.051 37.61 58.44 0.086 1.67 0.93 0.26 0.80 1.08 1.0 0.040 3.36 70.06 0.112 3.80 2.74 2 9.10 538 1.8E-03 5.3E+02 3.1E-04 10 0.229 6657 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.85% 0.0030
20.013 5595.84 12.8 0.185 12.6 40.5 17.54 1.44%Sand-Slime Tailing 0.059 119.0 1.13 0.54 0.59 1 1.34 16.808 233.63 19.91 20 1.58% 2.6 47% 1.69 0.08 1.61 1 0.88 0.05 0.97 1.0 0.052 37.29 57.20 0.085 1.65 0.93 0.26 0.80 1.08 1.0 0.040 3.31 65.95 0.107 3.58 2.61 2 9.15 538 1.8E-03 5.3E+02 3.1E-04 10 0.229 6649 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.88% 0.0031
20.177 5595.67 14.7 0.185 14.4 48.7 21.12 1.26%Sand-Slime Tailing 0.059 119.0 1.14 0.54 0.60 1 1.32 18.997 264.05 22.53 23 1.37% 2.5 47% 1.70 0.09 1.61 1 0.87 0.05 0.97 1.0 0.052 38.20 60.73 0.089 1.72 0.93 0.27 0.80 1.08 1.0 0.040 2.84 63.94 0.104 3.47 2.59 2 9.20 538 1.8E-03 5.3E+02 3.1E-04 10 0.229 6641 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.91% 0.0031
20.341 5595.51 13.5 0.185 13.4 28.8 12.46 1.37%Sand-Slime Tailing 0.059 119.0 1.15 0.55 0.60 1 1.32 17.608 244.76 20.73 20 1.49% 2.6 47% 1.71 0.09 1.62 1 0.87 0.05 0.97 1.0 0.052 37.57 58.30 0.086 1.66 0.93 0.26 0.80 1.07 1.0 0.040 3.15 65.23 0.106 3.49 2.58 2 9.25 538 1.8E-03 5.3E+02 3.1E-04 10 0.230 6633 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.93% 0.0032
22.340 5593.51 Sand-Slime Tailing 0.059 119.0 1.83 0.12 1.70 1 9.86 538 1.8E-03 5.3E+02 3.3E-04 10 0.233 6489 0.08%2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.24% 0.0447
Extra layer added to analyze seismic settlement of tailings below the bottom of CPT investigation.
Liquef_SeismicSettle_30Aug2015.xls Page 5 of 29
Energy Fuels Resources (USA) Inc.White Mesa Mill
Seismic Settlement Analyses
Data File: 13-52106_SP2W3-BSC-CPT 5613.80 Water surface elevation during CPT investigation (ft5615.72 Ground Surface Elevation at time of CPT (ft amsl)
Location: White Mesa 2013 CPT Investigation 0.15 5607.44 Water surface elevation at t0 (ft amsl)5626.27 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl)
..\..\..\6.2.3 Field Data\2013 Field Investigation\Conetec Dat 5.5 5597.74 Water surface elevation at t1 (ft amsl) 0.50 Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after plac ###### 5626.02 5625.77 0.50 0.055 110 0.028 0.014 0.00 0.00 0.028 0.014 0.08 508 1.7E-03 4.4E+02 3.0E-06 11 0.068 46696 0.00% 1.20 0.80 0.04% 0.000 0.32 0.133 0.778 0.00% 0.0000
Tailings Sands 1.69 5592.74 Water surface elevation at t2 (ft amsl)3.50 Thickness of Water Storage/Rooting Zone (ft)###### 5624.02 5622.27 3.50 0.054 107 0.215 0.121 0.00 0.00 0.215 0.121 0.69 508 1.7E-03 4.3E+02 2.8E-05 11 0.118 18930 0.00% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
Tailings Sand-Slimes 4.00 Thickness of High Compaction Layer (ft)###### 5620.27 5618.27 4.00 0.060 120 0.454 0.334 0.00 0.00 0.454 0.334 1.83 508 1.9E-03 4.8E+02 6.8E-05 11 0.153 12419 0.01% 0.65 0.75 0.02% 0.000 0.34 0.079 0.765 0.00% 0.0000
Tailings Slimes 1.44 2.55 Thickness of Random/Platform Fill on on top of existing interim cover (ft) ###### 5617 5615.72 2.55 0.050 101 0.582 0.518 0.00 0.00 0.582 0.518 2.83 508 1.6E-03 4.0E+02 1.3E-04 11 0.172 10354 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
Interim Cover 0.47 1164.98 Additional Stress due to Final Cover Placement, ΔσFC (psf)
Cells Requiring User Input/Manipulation 2.21 2.21 7.51 5592.74 Elevation of bottom of tailings (liner) (ft amsl)
0.363
rd Cσ Kσ Ka rd Dr f Kσ Ka Avg
(ft) (ft amsl) TSF TSF TSF (ft) PSI (%) (tcf) (pcf) (tsf)(tsf)(tsf) 1=Yes TSF MPa % (tsf)(tsf)(tsf) 1=Yes FoS m
0=No 0=No (ft/sec) (tcf) tsf tsf (%)
0.164 5615.56 7.7 0.125 7.7 1.9 0.82 1.62%Interim Cover 0.050 100.7 0.01 0.00 0.01 0 1.70 13.124 182.42 15.27 935 1.62% 1.5 51% 0.59 0.00 0.59 0 1.00 0.05 1.02 1.0 0.059 35.68 50.94 0.078 1.33 0.98 0.23 0.80 2.53 1.0 0.017 1.00 15.27 0.063 152.05 76.69 2 3.27 594 1.6E-03 5.5E+02 1.0E-04 11 0.177 9806 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
0.328 5615.39 34.3 0.207 34.2 7.6 3.28 0.60%Interim Cover 0.050 100.7 0.02 0.00 0.02 0 1.70 58.208 809.09 67.70 2074 0.60% 1.0 51% 0.60 0.00 0.60 0 1.00 0.08 1.03 1.0 0.060 54.08 121.78 0.183 3.08 0.97 0.48 0.76 2.56 1.0 0.017 1.00 67.70 0.109 132.00 67.54 2 3.32 594 1.6E-03 5.5E+02 1.1E-04 11 0.178 9750 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
0.492 5615.23 60.2 0.548 60.2 5.7 2.48 0.91%Interim Cover 0.050 100.7 0.02 0.00 0.02 0 1.70 102.306 ###### 118.89 2429 0.91% 1.2 51% 0.61 0.00 0.61 0 1.00 0.12 1.04 1.0 0.060 72.04 190.94 0.778 12.90 0.97 0.63 0.69 3.05 1.0 0.014 1.00 118.89 0.236 191.11 102.00 2 3.37 594 1.6E-03 5.5E+02 1.1E-04 11 0.179 9694 0.01%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
0.656 5615.06 93.8 1.118 93.8 6.5 2.81 1.19%Interim Cover 0.050 100.7 0.03 0.00 0.03 0 1.70 159.409 ###### 185.22 2838 1.19% 1.3 51% 0.62 0.00 0.62 0 1.00 0.22 1.07 1.0 0.062 95.32 280.55 1.000 16.09 0.97 0.79 0.61 3.60 1.0 0.012 1.00 185.22 1.000 606.81 311.45 2 3.42 594 1.6E-03 5.5E+02 1.1E-04 11 0.179 9640 0.01%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
0.820 5614.90 158.1 1.774 158.0 7.2 3.13 1.12%Interim Cover 0.050 100.7 0.04 0.00 0.04 0 1.70 268.634 ###### 312.09 3826 1.12% 1.3 51% 0.62 0.00 0.62 0 1.00 0.30 1.10 1.0 0.063 139.84 451.93 1.000 15.77 0.97 1.02 0.60 3.37 1.0 0.013 1.00 312.09 1.000 485.64 250.71 2 3.47 594 1.6E-03 5.5E+02 1.1E-04 11 0.180 9587 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
0.984 5614.74 233.5 2.580 233.4 9.6 4.17 1.11%Interim Cover 0.050 100.7 0.05 0.00 0.05 0 1.70 396.814 ###### 460.99 4709 1.11% 1.3 51% 0.63 0.00 0.63 0 1.00 0.30 1.09 1.0 0.063 192.10 653.09 1.000 15.83 0.97 1.24 0.60 3.13 1.0 0.014 1.00 460.99 1.000 404.86 210.34 2 3.52 594 1.6E-03 5.5E+02 1.1E-04 11 0.180 9535 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.148 5614.57 321.1 3.237 321.1 4.7 2.05 1.01%Interim Cover 0.050 100.7 0.06 0.00 0.06 0 1.70 545.819 ###### 633.99 5551 1.01% 1.3 51% 0.64 0.00 0.64 0 1.00 0.30 1.09 1.0 0.063 252.81 886.80 1.000 15.89 0.97 1.45 0.60 2.95 1.0 0.015 1.00 633.99 1.000 347.16 181.52 2 3.57 594 1.6E-03 5.5E+02 1.1E-04 11 0.181 9483 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.312 5614.41 348.1 3.834 348.0 7.5 3.25 1.10%Interim Cover 0.050 100.7 0.07 0.00 0.07 0 1.70 591.651 ###### 687.26 5266 1.10% 1.3 51% 0.65 0.00 0.65 0 1.00 0.30 1.08 1.0 0.063 271.50 958.76 1.000 15.94 0.97 1.51 0.60 2.79 1.0 0.015 1.00 687.26 1.000 303.88 159.91 2 3.62 594 1.6E-03 5.5E+02 1.1E-04 11 0.182 9433 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.476 5614.24 325.9 3.960 325.9 6.7 2.88 1.22%Interim Cover 0.050 100.7 0.07 0.00 0.07 0 1.70 553.945 ###### 643.46 4382 1.22% 1.3 51% 0.66 0.00 0.66 0 1.00 0.30 1.08 1.0 0.063 256.13 899.58 1.000 16.00 0.97 1.46 0.60 2.66 1.0 0.016 1.00 643.46 1.000 270.22 143.11 2 3.67 594 1.6E-03 5.5E+02 1.2E-04 11 0.182 9383 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.640 5614.08 280.6 3.998 280.6 6.9 3.01 1.42%Interim Cover 0.050 100.7 0.08 0.00 0.08 0 1.70 477.020 ###### 554.12 3396 1.43% 1.4 51% 0.67 0.00 0.67 0 1.00 0.30 1.08 1.0 0.062 224.78 778.89 1.000 16.06 0.97 1.36 0.60 2.55 1.0 0.017 1.00 554.12 1.000 243.30 129.68 2 3.72 594 1.6E-03 5.5E+02 1.2E-04 11 0.183 9335 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.804 5613.92 244.2 3.918 244.1 3.6 1.54 1.60%Interim Cover 0.050 100.7 0.09 0.00 0.09 0 1.70 415.038 ###### 482.09 2686 1.61% 1.4 51% 0.67 0.00 0.67 0 1.00 0.30 1.07 1.0 0.062 199.50 681.58 1.000 16.11 0.97 1.27 0.60 2.46 1.0 0.017 1.00 482.09 1.000 221.27 118.69 2 3.77 594 1.6E-03 5.5E+02 1.2E-04 11 0.183 9287 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.968 5613.75 208.3 4.496 208.3 3.0 1.30 2.16%Interim Cover 0.050 100.7 0.10 0.00 0.10 1 1.70 354.025 ###### 411.22 2132 2.16% 1.6 51% 0.68 0.00 0.68 0 1.00 0.30 1.07 1.0 0.062 174.63 585.84 1.000 16.18 0.97 1.17 0.60 2.39 1.0 0.018 1.00 411.22 1.000 206.05 111.11 2 3.82 594 1.6E-03 5.5E+02 1.2E-04 11 0.184 9240 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.133 5613.59 171.3 4.306 171.3 1.4 0.62 2.51%Interim Cover 0.050 100.7 0.11 0.01 0.10 1 1.70 291.278 ###### 338.32 1699 2.51% 1.6 51% 0.69 0.00 0.69 0 1.00 0.30 1.07 1.0 0.062 149.05 487.37 1.000 16.25 0.97 1.06 0.60 2.36 1.0 0.018 1.00 338.32 1.000 199.70 107.97 2 3.87 594 1.6E-03 5.5E+02 1.2E-04 11 0.185 9194 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.297 5613.42 146.4 3.625 146.4 0.5 0.21 2.48%Interim Cover 0.050 100.7 0.12 0.01 0.10 1 1.70 248.795 ###### 288.97 1407 2.48% 1.6 51% 0.70 0.00 0.70 0 1.00 0.30 1.06 1.0 0.061 131.73 420.69 1.000 16.32 0.97 0.98 0.60 2.33 1.0 0.018 1.00 289.10 1.000 193.74 105.03 2 3.92 594 1.6E-03 5.5E+02 1.2E-04 11 0.185 9149 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.461 5613.26 130.5 2.022 130.5 -0.0 -0.01 1.55%Interim Cover 0.050 100.7 0.12 0.02 0.11 1 1.70 221.918 ###### 257.74 1218 1.55% 1.5 51% 0.71 0.00 0.71 0 1.00 0.30 1.06 1.0 0.061 120.77 378.52 1.000 16.38 0.97 0.93 0.60 2.30 1.0 0.019 1.00 257.74 1.000 188.12 102.25 2 3.97 594 1.6E-03 5.5E+02 1.2E-04 11 0.186 9104 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.625 5613.10 117.5 1.895 117.5 0.5 0.22 1.61%Interim Cover 0.050 100.7 0.13 0.02 0.11 1 1.70 199.801 ###### 232.06 1065 1.61% 1.5 51% 0.71 0.00 0.71 0 1.00 0.30 1.06 1.0 0.061 111.76 343.82 1.000 16.45 0.97 0.88 0.60 2.28 1.0 0.019 1.00 232.06 1.000 182.83 99.64 2 4.02 594 1.6E-03 5.5E+02 1.3E-04 11 0.186 9060 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.789 5612.93 87.2 1.616 87.2 -0.2 -0.08 1.85%Interim Cover 0.050 100.7 0.14 0.03 0.11 1 1.70 148.240 ###### 172.17 768 1.86% 1.6 51% 0.72 0.00 0.72 0 0.99 0.20 1.03 1.0 0.059 90.74 262.91 1.000 16.81 0.97 0.76 0.62 2.16 1.0 0.020 1.00 172.17 1.000 177.83 97.32 2 4.07 594 1.6E-03 5.5E+02 1.3E-04 11 0.187 9017 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.953 5612.77 56.6 1.213 56.6 -0.3 -0.11 2.14%Interim Cover 0.050 100.7 0.15 0.03 0.12 1 1.70 96.186 ###### 111.71 484 2.15% 1.7 51% 0.73 0.00 0.73 0 0.99 0.12 1.02 1.0 0.059 69.52 181.23 0.556 9.50 0.97 0.61 0.69 1.84 1.0 0.023 1.06 118.91 0.236 40.91 25.21 2 4.12 594 1.6E-03 5.5E+02 1.3E-04 11 0.187 8975 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
3.117 5612.60 41.8 0.990 41.8 -0.7 -0.32 2.37%Interim Cover 0.050 100.7 0.16 0.04 0.12 1 1.70 71.043 987.50 82.50 348 2.38% 1.8 51% 0.74 0.00 0.74 0 0.99 0.09 1.01 1.0 0.058 59.27 141.78 0.238 4.10 0.97 0.52 0.74 1.68 1.0 0.025 1.14 94.25 0.158 26.62 15.36 2 4.17 495 1.6E-03 3.8E+02 1.9E-04 11 0.188 8933 0.03% 2.00 0.65 0.03% 0.002 0.34 0.079 0.765 0.25% 0.0004
3.281 5612.44 29.4 0.781 29.4 -1.4 -0.59 2.66%Sand-Slime Tailing 0.059 119.0 0.17 0.04 0.12 1 1.70 49.980 694.72 58.03 235 2.67% 2.0 47% 0.75 0.00 0.75 0 0.99 0.08 1.01 1.0 0.058 50.65 108.69 0.157 2.72 0.97 0.44 0.78 1.53 1.0 0.028 1.27 73.95 0.118 19.10 10.91 2 4.22 495 1.8E-03 4.5E+02 1.6E-04 10 0.189 9121 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
3.445 5612.28 24.9 0.524 24.9 -1.2 -0.53 2.10%Sand-Slime Tailing 0.059 119.0 0.18 0.05 0.13 1 1.70 42.364 588.86 49.19 192 2.12% 1.9 47% 0.76 0.00 0.76 0 0.99 0.07 1.01 1.0 0.058 47.55 96.74 0.137 2.37 0.97 0.40 0.80 1.47 1.0 0.029 1.24 60.94 0.101 15.82 9.10 2 4.27 495 1.8E-03 4.5E+02 1.6E-04 10 0.190 9072 0.03% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
3.609 5612.11 21.4 0.387 21.4 -1.7 -0.72 1.81%Sand-Slime Tailing 0.059 119.0 0.19 0.05 0.13 1 1.70 36.363 505.45 42.21 159 1.83% 2.0 47% 0.77 0.00 0.77 0 0.99 0.07 1.01 1.0 0.058 45.11 87.32 0.123 2.13 0.97 0.38 0.80 1.45 1.0 0.029 1.24 52.38 0.093 14.12 8.13 2 4.32 495 1.8E-03 4.5E+02 1.7E-04 10 0.190 9024 0.03% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
3.773 5611.95 13.1 0.327 13.2 -2.1 -0.91 2.49%Slime Tailings 0.057 113.1 0.20 0.06 0.14 1 1.70 22.355 310.73 25.94 94 2.53% 2.2 71% 0.78 0.00 0.78 0 0.99 0.06 1.01 1.0 0.058 39.12 65.06 0.094 1.63 0.97 0.29 0.80 1.44 1.0 0.030 1.69 43.72 0.086 12.68 7.15 2 4.37 495 1.8E-03 4.3E+02 1.8E-04 16 0.443 7387 0.03% 2.00 0.65 0.03% 0.002 0.34 0.079 0.765 0.28% 0.0005
3.937 5611.78 9.9 0.171 10.0 -1.5 -0.64 1.72%Sand-Slime Tailing 0.059 119.0 0.21 0.06 0.14 1 1.70 16.915 235.12 19.63 68 1.76% 2.2 47% 0.79 0.00 0.79 0 0.99 0.05 1.00 1.0 0.057 37.19 56.81 0.084 1.47 0.97 0.26 0.80 1.43 1.0 0.030 1.65 32.48 0.077 10.94 6.21 2 4.42 495 1.8E-03 4.5E+02 1.7E-04 10 0.191 8933 0.03% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
4.101 5611.62 9.9 0.106 9.9 1.7 0.74 1.07%Sand-Slime Tailing 0.059 119.0 0.22 0.07 0.15 1 1.70 16.881 234.65 19.63 66 1.09% 2.1 47% 0.80 0.00 0.80 0 0.99 0.05 1.00 1.0 0.057 37.19 56.81 0.084 1.47 0.97 0.26 0.80 1.42 1.0 0.030 1.41 27.67 0.073 10.05 5.76 2 4.47 495 1.8E-03 4.5E+02 1.7E-04 10 0.192 8888 0.03% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
4.265 5611.45 13.3 0.031 13.3 3.7 1.60 0.23%Sand-Slime Tailing 0.059 119.0 0.22 0.07 0.15 1 1.70 22.593 314.04 26.29 86 0.24% 1.6 47% 0.81 0.00 0.81 0 0.99 0.06 1.00 1.0 0.057 39.52 65.81 0.095 1.65 0.97 0.30 0.80 1.42 1.0 0.030 1.00 26.28 0.072 9.59 5.62 2 4.52 495 1.8E-03 4.5E+02 1.7E-04 10 0.192 8843 0.03% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
4.429 5611.29 10.7 0.042 10.7 2.1 0.90 0.39%Sand-Slime Tailing 0.059 119.0 0.23 0.08 0.16 1 1.70 18.241 253.55 21.21 67 0.40% 1.8 47% 0.82 0.00 0.82 0 0.99 0.05 1.00 1.0 0.057 37.74 58.95 0.087 1.52 0.97 0.27 0.80 1.41 1.0 0.030 1.13 24.06 0.070 9.07 5.29 2 4.57 495 1.8E-03 4.5E+02 1.8E-04 10 0.193 8799 0.03% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
4.593 5611.13 8.5 0.048 8.4 6.1 2.62 0.57%Sand-Slime Tailing 0.059 119.0 0.24 0.08 0.16 1 1.70 14.314 198.96 16.70 51 0.58% 2.0 47% 0.83 0.00 0.83 0 0.98 0.05 1.00 1.0 0.057 36.16 52.86 0.080 1.41 0.96 0.24 0.80 1.40 1.0 0.030 1.33 22.15 0.068 8.61 5.01 2 4.62 495 1.8E-03 4.5E+02 1.8E-04 10 0.194 8756 0.03% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
4.757 5610.96 7.9 0.031 7.8 13.0 5.65 0.39%Sand-Slime Tailing 0.059 119.0 0.25 0.09 0.17 1 1.70 13.311 185.02 15.62 46 0.40% 2.0 47% 0.84 0.00 0.84 0 0.98 0.05 1.00 1.0 0.057 35.78 51.40 0.079 1.38 0.96 0.23 0.80 1.39 1.0 0.031 1.28 20.02 0.067 8.16 4.77 2 4.67 495 1.8E-03 4.5E+02 1.8E-04 10 0.194 8713 0.03% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
4.921 5610.80 7.2 0.093 7.1 20.3 8.78 1.30%Slime Tailings 0.057 113.1 0.26 0.09 0.17 1 1.70 11.985 166.59 14.17 41 1.35% 2.3 71% 0.85 0.00 0.85 0 0.98 0.05 1.00 1.0 0.057 35.02 49.19 0.077 1.35 0.96 0.22 0.80 1.38 1.0 0.031 1.94 27.50 0.073 8.70 5.03 2 4.72 495 1.8E-03 4.3E+02 1.9E-04 16 0.447 7136 0.04% 2.00 0.65 0.03% 0.004 0.34 0.079 0.765 0.58% 0.0009
5.085 5610.63 7.1 0.130 7.0 25.9 11.21 1.82%Slime Tailings 0.057 113.1 0.27 0.10 0.17 1 1.70 11.866 164.94 14.10 40 1.89% 2.4 71% 0.86 0.00 0.86 0 0.98 0.05 1.00 1.0 0.057 35.00 49.10 0.077 1.35 0.96 0.22 0.80 1.38 1.0 0.031 2.30 32.49 0.077 8.98 5.17 2 4.77 495 1.8E-03 4.3E+02 1.9E-04 16 0.447 7104 0.04% 2.00 0.65 0.03% 0.004 0.34 0.079 0.765 0.61% 0.0010
5.249 5610.47 8.4 0.108 8.2 23.7 10.28 1.29%Sand-Slime Tailing 0.059 119.0 0.28 0.10 0.18 1 1.70 14.008 194.71 16.56 45 1.33% 2.3 47% 0.86 0.00 0.86 0 0.98 0.05 1.00 1.0 0.057 36.11 52.67 0.080 1.41 0.96 0.23 0.80 1.37 1.0 0.031 1.82 30.12 0.075 8.53 4.97 2 4.82 495 1.8E-03 4.5E+02 1.9E-04 10 0.196 8594 0.03% 2.00 0.65 0.03% 0.001 0.34 0.079 0.765 0.14% 0.0002
5.413 5610.31 18.2 0.125 18.1 15.6 6.76 0.69%Sand-Slime Tailing 0.059 119.0 0.29 0.11 0.18 1 1.70 30.804 428.18 35.97 98 0.70% 1.8 47% 0.87 0.00 0.87 0 0.98 0.06 1.00 1.0 0.057 42.92 78.89 0.111 1.96 0.96 0.35 0.80 1.36 1.0 0.031 1.12 40.39 0.084 9.26 5.61 2 4.87 495 1.8E-03 4.5E+02 1.9E-04 10 0.196 8554 0.03% 2.00 0.65 0.03% 0.001 0.34 0.079 0.765 0.20% 0.0003
5.577 5610.14 20.7 0.144 20.7 2.2 0.94 0.69%Sand-Slime Tailing 0.059 119.0 0.30 0.11 0.19 1 1.70 35.241 489.85 40.96 109 0.70% 1.8 47% 0.88 0.00 0.88 0 0.98 0.07 1.00 1.0 0.057 44.67 85.62 0.121 2.13 0.96 0.37 0.80 1.36 1.0 0.031 1.10 44.95 0.087 9.45 5.79 2 4.92 495 1.8E-03 4.5E+02 1.9E-04 10 0.197 8515 0.03% 2.00 0.65 0.03% 0.002 0.34 0.079 0.765 0.25% 0.0004
5.741 5609.98 20.9 0.185 20.9 1.2 0.52 0.89%Sand-Slime Tailing 0.059 119.0 0.31 0.12 0.19 1 1.70 35.462 492.92 41.20 107 0.90% 1.9 47% 0.89 0.00 0.89 0 0.98 0.07 1.00 1.0 0.056 44.75 85.95 0.121 2.14 0.96 0.37 0.80 1.35 1.0 0.031 1.15 47.49 0.090 9.45 5.80 2 4.97 495 1.8E-03 4.5E+02 1.9E-04 10 0.198 8476 0.03% 2.00 0.65 0.03% 0.002 0.34 0.079 0.765 0.30% 0.0005
5.905 5609.81 17.0 0.216 17.0 -0.2 -0.07 1.27%Sand-Slime Tailing 0.059 119.0 0.32 0.12 0.20 1 1.70 28.849 401.00 33.50 84 1.30% 2.0 47% 0.90 0.00 0.90 0 0.98 0.06 1.00 1.0 0.056 42.05 75.56 0.107 1.89 0.96 0.33 0.80 1.34 1.0 0.032 1.35 45.39 0.088 9.05 5.47 2 5.02 495 1.8E-03 4.5E+02 1.9E-04 10 0.198 8438 0.03% 2.00 0.65 0.03% 0.002 0.34 0.079 0.765 0.34% 0.0006
6.069 5609.65 16.4 0.222 16.4 0.0 0.01 1.35%Sand-Slime Tailing 0.059 119.0 0.33 0.13 0.20 1 1.70 27.880 387.53 32.38 80 1.38% 2.1 47% 0.91 0.00 0.91 0 0.98 0.06 1.00 1.0 0.056 41.66 74.04 0.105 1.86 0.96 0.33 0.80 1.34 1.0 0.032 1.41 45.77 0.088 8.88 5.37 2 5.07 495 1.8E-03 4.5E+02 2.0E-04 10 0.199 8401 0.03% 2.00 0.65 0.03% 0.003 0.34 0.079 0.765 0.39% 0.0006
6.234 5609.49 12.5 0.167 12.5 0.5 0.23 1.33%Sand-Slime Tailing 0.059 119.0 0.34 0.13 0.21 1 1.70 21.267 295.61 24.71 59 1.37% 2.2 47% 0.92 0.00 0.92 0 0.98 0.06 1.00 1.0 0.056 38.97 63.67 0.092 1.64 0.96 0.29 0.80 1.33 1.0 0.032 1.61 39.71 0.083 8.18 4.91 2 5.12 495 1.8E-03 4.5E+02 2.0E-04 10 0.199 8364 0.03% 2.00 0.65 0.03% 0.003 0.34 0.079 0.765 0.43% 0.0007
6.398 5609.32 11.4 0.156 11.4 5.1 2.22 1.37%Sand-Slime Tailing 0.059 119.0 0.35 0.14 0.21 1 1.70 19.312 268.44 22.49 52 1.41% 2.2 47% 0.93 0.00 0.93 0 0.97 0.05 1.00 1.0 0.056 38.19 60.68 0.089 1.58 0.96 0.27 0.80 1.32 1.0 0.032 1.73 38.83 0.082 7.94 4.76 2 5.17 495 1.8E-03 4.5E+02 2.0E-04 10 0.200 8327 0.03% 2.00 0.65 0.03% 0.003 0.34 0.079 0.765 0.46% 0.0008
6.562 5609.16 8.9 0.092 8.8 14.8 6.41 1.03%Sand-Slime Tailing 0.059 119.0 0.36 0.14 0.22 1 1.70 14.977 208.18 17.58 40 1.08% 2.3 47% 0.94 0.00 0.94 0 0.97 0.05 1.00 1.0 0.056 36.47 54.04 0.082 1.46 0.96 0.24 0.80 1.32 1.0 0.032 1.80 31.72 0.076 7.21 4.33 2 5.22 495 1.8E-03 4.5E+02 2.0E-04 10 0.200 8292 0.04% 2.00 0.65 0.03% 0.003 0.34 0.079 0.765 0.50% 0.0008
6.726 5608.99 7.1 0.054 7.0 16.9 7.31 0.76%Sand-Slime Tailing 0.059 119.0 0.37 0.15 0.22 1 1.70 11.832 164.46 13.95 30 0.81% 2.3 47% 0.95 0.00 0.95 0 0.97 0.05 1.00 1.0 0.056 35.19 49.14 0.077 1.37 0.96 0.22 0.80 1.31 1.0 0.032 1.90 26.50 0.072 6.66 4.01 2 5.27 495 1.8E-03 4.5E+02 2.1E-04 10 0.201 8256 0.04% 2.00 0.65 0.03% 0.004 0.34 0.079 0.765 0.54% 0.0009
6.890 5608.83 6.9 0.094 6.8 23.9 10.34 1.36%Slime Tailings 0.057 113.1 0.38 0.16 0.22 1 1.70 11.509 159.98 13.66 29 1.44% 2.4 71% 0.96 0.00 0.96 0 0.97 0.05 0.99 1.0 0.056 34.84 48.51 0.076 1.36 0.96 0.21 0.80 1.31 1.0 0.032 2.45 33.50 0.078 7.07 4.21 2 5.32 495 1.8E-03 4.3E+02 2.2E-04 16 0.453 6767 0.04% 2.00 0.65 0.03% 0.006 0.34 0.079 0.765 0.99% 0.0016
7.054 5608.67 6.6 0.021 6.4 33.6 14.56 0.32%Sand-Slime Tailing 0.059 119.0 0.39 0.16 0.23 1 1.70 10.880 151.23 13.05 27 0.34% 2.2 47% 0.97 0.00 0.97 0 0.97 0.05 0.99 1.0 0.056 34.88 47.93 0.076 1.35 0.96 0.21 0.80 1.30 1.0 0.032 1.59 20.81 0.067 5.99 3.67 2 5.37 495 1.8E-03 4.5E+02 2.1E-04 10 0.202 8189 0.04% 2.00 0.65 0.03% 0.004 0.34 0.079 0.765 0.60% 0.0010
7.218 5608.50 8.6 0.044 8.4 29.9 12.94 0.51%Sand-Slime Tailing 0.059 119.0 0.40 0.17 0.23 1 1.70 14.246 198.02 16.91 35 0.54% 2.1 47% 0.98 0.00 0.98 0 0.97 0.05 0.99 1.0 0.056 36.23 53.15 0.081 1.45 0.96 0.24 0.80 1.30 1.0 0.033 1.55 26.22 0.072 6.26 3.86 2 5.42 495 1.8E-03 4.5E+02 2.1E-04 10 0.202 8155 0.04% 2.00 0.65 0.03% 0.004 0.34 0.079 0.765 0.64% 0.0010
7.382 5608.34 6.9 0.052 6.7 30.0 13.02 0.75%Sand-Slime Tailing 0.059 119.0 0.41 0.17 0.24 1 1.70 11.424 158.79 13.64 27 0.80% 2.3 47% 0.99 0.00 0.99 0 0.97 0.05 0.99 1.0 0.056 35.08 48.72 0.076 1.37 0.96 0.21 0.80 1.29 1.0 0.033 2.03 27.65 0.073 6.25 3.81 2 5.47 495 1.8E-03 4.5E+02 2.1E-04 10 0.203 8121 0.04% 2.00 0.65 0.03% 0.004 0.34 0.079 0.765 0.67% 0.0011
7.546 5608.17 6.5 0.057 6.3 35.9 15.54 0.88%Slime Tailings 0.057 113.1 0.42 0.18 0.24 1 1.70 10.659 148.16 12.82 25 0.94% 2.4 71% 1.00 0.00 1.00 0 0.97 0.05 0.99 1.0 0.056 34.55 47.37 0.075 1.35 0.96 0.21 0.80 1.29 1.0 0.033 2.27 29.12 0.074 6.24 3.80 2 5.52 495 1.8E-03 4.3E+02 2.3E-04 16 0.455 6659 0.05% 2.00 0.65 0.03% 0.007 0.34 0.079 0.765 1.11% 0.0018
7.710 5608.01 7.0 0.066 6.9 29.2 12.65 0.94%Sand-Slime Tailing 0.059 119.0 0.43 0.18 0.25 1 1.70 11.645 161.87 13.88 27 1.00% 2.4 47% 1.01 0.00 1.01 0 0.97 0.05 0.99 1.0 0.055 35.17 49.06 0.077 1.38 0.96 0.22 0.80 1.28 1.0 0.033 2.23 30.97 0.076 6.26 3.82 2 5.57 495 1.8E-03 4.5E+02 2.2E-04 10 0.204 8058 0.04% 2.00 0.65 0.03% 0.005 0.34 0.079 0.765 0.74% 0.0012
7.874 5607.85 6.7 0.068 6.5 36.4 15.76 1.02%Slime Tailings 0.057 113.1 0.44 0.19 0.25 1 1.70 10.982 152.65 13.20 25 1.09% 2.4 71% 1.02 0.00 1.02 0 0.96 0.05 0.99 1.0 0.055 34.69 47.89 0.075 1.36 0.96 0.21 0.80 1.28 1.0 0.033 2.42 31.93 0.077 6.22 3.79 2 5.62 495 1.8E-03 4.3E+02 2.3E-04 16 0.456 6607 0.05% 2.00 0.65 0.03% 0.008 0.34 0.079 0.765 1.17% 0.0019
8.038 5607.68 7.0 0.101 6.8 40.5 17.55 1.44%Slime Tailings 0.057 113.1 0.45 0.19 0.26 1 1.70 11.526 160.21 13.89 26 1.53% 2.5 71% 1.03 0.00 1.03 0 0.96 0.05 0.99 1.0 0.055 34.92 48.81 0.076 1.38 0.96 0.22 0.80 1.28 1.0 0.033 2.73 37.94 0.082 6.52 3.95 2 5.67 495 1.8E-03 4.3E+02 2.3E-04 16 0.456 6582 0.05% 2.00 0.65 0.03% 0.008 0.34 0.079 0.765 1.20% 0.0020
8.202 5607.52 7.2 0.053 7.0 32.9 14.27 0.74%Sand-Slime Tailing 0.059 119.0 0.46 0.20 0.26 1 1.70 11.866 164.94 14.19 26 0.79% 2.3 47% 1.04 0.00 1.04 0 0.96 0.05 0.99 1.0 0.055 35.28 49.47 0.077 1.40 0.96 0.22 0.80 1.27 1.0 0.033 2.09 29.59 0.075 5.86 3.63 2 5.72 495 1.8E-03 4.5E+02 2.2E-04 10 0.205 7966 0.04% 2.00 0.65 0.03% 0.005 0.34 0.079 0.765 0.83% 0.0014
8.366 5607.35 8.3 0.060 8.1 33.6 14.56 0.72%Sand-Slime Tailing 0.059 119.0 0.47 0.20 0.26 1 1.70 13.719 190.69 16.35 30 0.77% 2.3 47% 1.05 0.00 1.05 0 0.96 0.05 0.99 1.0 0.055 36.04 52.38 0.080 1.45 0.96 0.23 0.80 1.27 1.0 0.033 1.90 31.09 0.076 5.86 3.65 2 5.77 495 1.8E-03 4.5E+02 2.3E-04 10 0.206 7935 0.04% 2.00 0.65 0.03% 0.006 0.34 0.079 0.765 0.86% 0.0014
8.530 5607.19 8.4 0.039 8.2 29.3 12.71 0.47%Sand-Slime Tailing 0.059 119.0 0.48 0.21 0.27 1 1.70 13.923 193.53 16.53 29 0.49% 2.2 47% 1.06 0.00 1.06 0 0.96 0.05 0.99 1.0 0.055 36.10 52.63 0.080 1.46 0.96 0.23 0.80 1.26 1.0 0.033 1.67 27.61 0.073 5.54 3.50 2 5.82 495 1.8E-03 4.5E+02 2.3E-04 10 0.206 7905 0.04% 2.00 0.65 0.03% 0.006 0.34 0.079 0.765 0.89% 0.0015
8.694 5607.03 9.0 0.046 8.9 16.0 6.93 0.51%Sand-Slime Tailing 0.059 119.0 0.49 0.21 0.27 1 1.70 15.130 210.31 17.77 31 0.54% 2.2 47% 1.07 0.00 1.07 0 0.96 0.05 0.99 1.0 0.055 36.53 54.30 0.082 1.49 0.96 0.24 0.80 1.26 1.0 0.033 1.65 29.41 0.074 5.56 3.52 2 5.87 495 1.8E-03 4.5E+02 2.3E-04 10 0.207 7875 0.04% 2.00 0.65 0.03% 0.006 0.34 0.079 0.765 0.92% 0.0015
8.858 5606.86 8.9 0.043 8.8 19.3 8.37 0.48%Sand-Slime Tailing 0.059 119.0 0.50 0.22 0.28 1 1.70 14.909 207.24 17.55 30 0.51% 2.2 47% 1.08 0.00 1.08 0 0.96 0.05 0.99 1.0 0.055 36.46 54.01 0.081 1.49 0.95 0.24 0.80 1.25 1.0 0.034 1.66 29.14 0.074 5.45 3.47 2 5.92 495 1.8E-03 4.5E+02 2.3E-04 10 0.207 7845 0.04% 2.00 0.65 0.03% 0.006 0.34 0.079 0.765 0.95% 0.0016
9.022 5606.70 9.0 0.081 8.9 11.3 4.91 0.90%Sand-Slime Tailing 0.059 119.0 0.50 0.22 0.28 1 1.70 15.130 210.31 17.71 30 0.96% 2.3 47% 1.09 0.00 1.09 0 0.96 0.05 0.99 1.0 0.055 36.51 54.23 0.082 1.49 0.95 0.24 0.80 1.25 1.0 0.034 2.04 36.18 0.080 5.79 3.64 2 5.97 495 1.8E-03 4.5E+02 2.3E-04 10 0.208 7816 0.04% 2.00 0.65 0.03% 0.006 0.34 0.079 0.765 0.98% 0.0016
9.186 5606.53 10.5 0.074 10.5 12.7 5.50 0.70%Sand-Slime Tailing 0.059 119.0 0.51 0.23 0.29 1 1.70 17.782 247.17 20.81 35 0.74% 2.2 47% 1.10 0.00 1.10 0 0.96 0.05 0.99 1.0 0.055 37.60 58.41 0.086 1.58 0.95 0.26 0.80 1.24 1.0 0.034 1.70 35.42 0.080 5.65 3.61 2 6.02 495 1.8E-03 4.5E+02 2.4E-04 10 0.208 7787 0.05% 2.00 0.65 0.03% 0.007 0.34 0.079 0.765 1.01% 0.0017
9.350 5606.37 8.8 0.087 8.8 6.6 2.84 0.98%Sand-Slime Tailing 0.059 119.0 0.52 0.23 0.29 1 1.70 14.960 207.94 17.46 28 1.05% 2.4 47% 1.11 0.00 1.11 0 0.96 0.05 0.99 1.0 0.055 36.42 53.88 0.081 1.49 0.95 0.24 0.80 1.24 1.0 0.034 2.18 38.09 0.082 5.72 3.61 2 6.07 460 1.8E-03 3.9E+02 2.8E-04 10 0.209 7758 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.68% 0.0028
9.514 5606.21 6.8 0.122 6.7 23.8 10.30 1.78%Slime Tailings 0.057 113.1 0.53 0.24 0.30 1 1.70 11.390 158.32 13.52 21 1.93% 2.6 71% 1.12 0.00 1.12 0 0.95 0.05 0.99 1.0 0.054 34.80 48.32 0.076 1.39 0.95 0.21 0.80 1.24 1.0 0.034 3.44 46.54 0.089 6.13 3.76 2 6.12 460 1.8E-03 3.7E+02 2.9E-04 16 0.461 6365 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.17% 0.0036
9.678 5606.04 8.3 0.124 8.0 40.2 17.44 1.50%Slime Tailings 0.057 113.1 0.54 0.24 0.30 1 1.70 13.668 189.99 16.37 26 1.60% 2.5 71% 1.13 0.00 1.13 0 0.95 0.05 0.99 1.0 0.054 35.79 52.16 0.080 1.46 0.95 0.23 0.80 1.23 1.0 0.034 2.79 45.63 0.088 5.99 3.73 2 6.17 460 1.8E-03 3.7E+02 3.0E-04 16 0.461 6344 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.21% 0.0036
9.842 5605.88 13.0 0.032 12.8 32.9 14.24 0.25%Sand-Slime Tailing 0.059 119.0 0.55 0.25 0.31 1 1.70 21.794 302.94 25.72 41 0.26% 2.0 47% 1.14 0.00 1.14 0 0.95 0.06 0.98 1.0 0.054 39.32 65.04 0.094 1.73 0.95 0.29 0.80 1.23 1.0 0.034 1.25 32.26 0.077 5.16 3.44 2 6.22 460 1.8E-03 3.9E+02 2.8E-04 10 0.210 7677 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.79% 0.0029
10.006 5605.71 14.0 0.141 13.9 7.1 3.09 1.01%Sand-Slime Tailing 0.059 119.0 0.56 0.25 0.31 1 1.70 23.647 328.69 27.55 43 1.05% 2.2 47% 1.14 0.00 1.14 0 0.95 0.06 0.98 1.0 0.054 39.96 67.52 0.097 1.79 0.95 0.30 0.80 1.23 1.0 0.034 1.71 47.02 0.089 5.90 3.84 2 6.27 460 1.8E-03 3.9E+02 2.9E-04 10 0.210 7650 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.82% 0.0030
10.170 5605.55 8.3 0.114 8.2 6.4 2.78 1.38%Sand-Slime Tailing 0.059 119.0 0.57 0.26 0.31 1 1.70 13.957 194.00 16.29 24 1.48% 2.5 47% 1.15 0.00 1.15 0 0.95 0.05 0.99 1.0 0.054 36.01 52.30 0.080 1.47 0.95 0.23 0.80 1.22 1.0 0.034 2.79 45.51 0.088 5.73 3.60 2 6.32 460 1.8E-03 3.9E+02 2.9E-04 10 0.211 7623 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.86% 0.0030
10.335 5605.39 8.7 0.102 8.7 10.1 4.39 1.17%Sand-Slime Tailing 0.059 119.0 0.58 0.26 0.32 1 1.70 14.722 204.64 17.22 25 1.25% 2.4 47% 1.16 0.00 1.16 0 0.95 0.05 0.98 1.0 0.054 36.34 53.57 0.081 1.50 0.95 0.24 0.80 1.22 1.0 0.034 2.52 43.44 0.086 5.54 3.52 2 6.37 460 1.8E-03 3.9E+02 2.9E-04 10 0.211 7597 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.89% 0.0031
10.499 5605.22 23.1 0.120 23.1 9.6 4.17 0.52%Sand-Slime Tailing 0.059 119.0 0.59 0.27 0.32 1 1.70 39.219 545.14 45.67 70 0.53% 1.9 47% 1.17 0.00 1.17 0 0.95 0.07 0.98 1.0 0.054 46.32 91.99 0.130 2.42 0.95 0.39 0.80 1.22 1.0 0.034 1.17 53.57 0.094 5.98 4.20 2 6.42 460 1.8E-03 3.9E+02 2.9E-04 10 0.212 7571 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.93% 0.0032
10.663 5605.06 24.0 0.124 23.9 8.7 3.75 0.52%Sand-Slime Tailing 0.059 119.0 0.60 0.27 0.33 1 1.70 40.647 564.99 47.32 71 0.53% 1.9 47% 1.18 0.00 1.18 0 0.95 0.07 0.98 1.0 0.054 46.90 94.21 0.133 2.49 0.95 0.40 0.80 1.21 1.0 0.035 1.17 55.14 0.096 5.97 4.23 2 6.47 460 1.8E-03 3.9E+02 3.0E-04 10 0.212 7545 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.96% 0.0032
10.827 5604.89 25.3 0.175 25.3 8.6 3.72 0.69%Sand-Slime Tailing 0.059 119.0 0.61 0.28 0.33 1 1.70 42.925 596.66 49.96 74 0.71% 1.9 47% 1.19 0.00 1.19 0 0.95 0.07 0.98 1.0 0.053 47.82 97.78 0.139 2.60 0.95 0.41 0.80 1.21 1.0 0.035 1.21 60.64 0.101 6.21 4.41 2 6.52 460 1.8E-03 3.9E+02 3.0E-04 10 0.213 7519 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 2.00% 0.0033
10.991 5604.73 28.0 0.202 28.0 8.4 3.62 0.72%Sand-Slime Tailing 0.059 119.0 0.62 0.28 0.34 1 1.70 47.583 661.40 55.37 81 0.74% 1.9 47% 1.20 0.00 1.20 0 0.94 0.07 0.98 1.0 0.053 49.72 105.09 0.151 2.84 0.95 0.43 0.79 1.22 1.0 0.034 1.19 65.94 0.107 6.49 4.66 2 6.57 460 1.8E-03 3.9E+02 3.0E-04 10 0.213 7494 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 2.03% 0.0033
11.155 5604.57 24.5 0.216 24.4 7.8 3.38 0.88%Sand-Slime Tailing 0.059 119.0 0.63 0.29 0.34 1 1.70 41.514 577.04 48.31 70 0.91% 2.0 47% 1.21 0.00 1.21 0 0.94 0.07 0.98 1.0 0.053 47.25 95.56 0.135 2.54 0.95 0.40 0.80 1.20 1.0 0.035 1.31 63.36 0.104 6.22 4.38 2 6.62 460 1.8E-03 3.9E+02 3.0E-04 10 0.213 7469 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.07% 0.0034
11.319 5604.40 20.2 0.227 20.2 7.1 3.09 1.12%Sand-Slime Tailing 0.059 119.0 0.64 0.29 0.35 1 1.70 34.272 476.38 39.89 56 1.16% 2.1 47% 1.22 0.00 1.22 0 0.94 0.06 0.98 1.0 0.053 44.29 84.19 0.118 2.23 0.95 0.36 0.80 1.20 1.0 0.035 1.54 61.62 0.102 6.03 4.13 2 6.67 460 1.8E-03 3.9E+02 3.1E-04 10 0.214 7444 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.11% 0.0035
11.483 5604.24 17.7 0.281 17.6 7.2 3.11 1.59%Sand-Slime Tailing 0.059 119.0 0.65 0.30 0.35 1 1.70 29.937 416.12 34.86 48 1.65% 2.3 47% 1.23 0.00 1.23 0 0.94 0.06 0.98 1.0 0.053 42.53 77.39 0.109 2.05 0.95 0.34 0.80 1.20 1.0 0.035 1.93 67.15 0.108 6.33 4.19 2 6.72 460 1.8E-03 3.9E+02 3.1E-04 10 0.214 7419 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.14% 0.0035
11.647 5604.07 17.7 0.326 17.7 8.6 3.74 1.84%Sand-Slime Tailing 0.059 119.0 0.66 0.30 0.36 1 1.70 30.039 417.54 34.99 48 1.91% 2.3 47% 1.24 0.00 1.24 0 0.94 0.06 0.98 1.0 0.053 42.57 77.57 0.109 2.06 0.95 0.34 0.80 1.19 1.0 0.035 2.07 72.45 0.115 6.66 4.36 2 6.77 460 1.8E-03 3.9E+02 3.1E-04 10 0.215 7395 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.18% 0.0036
11.811 5603.91 20.4 0.539 20.3 13.1 5.69 2.65%Sand-Slime Tailing 0.059 119.0 0.67 0.31 0.36 1 1.70 34.493 479.45 40.22 55 2.74% 2.4 47% 1.25 0.00 1.25 0 0.94 0.07 0.98 1.0 0.053 44.41 84.63 0.119 2.25 0.95 0.37 0.80 1.19 1.0 0.035 2.30 92.67 0.154 8.78 5.52 2 6.82 460 1.8E-03 3.9E+02 3.1E-04 10 0.215 7371 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.22% 0.0036
11.975 5603.75 17.7 0.579 17.6 13.2 5.71 3.27%Slime Tailings 0.057 113.1 0.68 0.31 0.37 1 1.70 29.937 416.12 34.93 47 3.40% 2.5 71% 1.26 0.00 1.26 0 0.94 0.06 0.98 1.0 0.053 42.25 77.18 0.109 2.06 0.95 0.34 0.80 1.19 1.0 0.035 2.84 99.07 0.170 9.61 5.84 2 6.87 460 1.8E-03 3.7E+02 3.3E-04 16 0.467 6052 0.10% 2.00 0.65 0.03% 0.018 0.34 0.079 0.765 2.74% 0.0045
12.139 5603.58 11.5 0.499 11.4 15.5 6.73 4.33%Slime Tailings 0.057 113.1 0.69 0.32 0.37 1 1.70 19.448 270.33 22.78 29 4.60% 2.7 71% 1.27 0.00 1.27 0 0.94 0.05 0.98 1.0 0.053 38.02 60.80 0.089 1.68 0.95 0.28 0.80 1.18 1.0 0.035 4.36 99.37 0.171 9.56 5.62 2 6.92 460 1.8E-03 3.7E+02 3.3E-04 16 0.467 6034 0.10% 2.00 0.65 0.03% 0.018 0.34 0.079 0.765 2.77% 0.0046
12.303 5603.42 10.9 0.321 10.7 30.3 13.15 2.94%Slime Tailings 0.057 113.1 0.70 0.32 0.37 1 1.70 18.258 253.79 21.58 27 3.14% 2.7 71% 1.28 0.00 1.28 0 0.94 0.05 0.98 1.0 0.053 37.60 59.18 0.087 1.64 0.95 0.27 0.80 1.18 1.0 0.035 3.72 80.22 0.128 7.07 4.35 2 6.97 460 1.8E-03 3.7E+02 3.4E-04 16 0.468 6016 0.10% 2.00 0.65 0.03% 0.018 0.34 0.079 0.765 2.81% 0.0046
12.467 5603.25 10.3 0.339 10.0 56.2 24.35 3.28%Slime Tailings 0.057 113.1 0.71 0.33 0.38 1 1.70 16.949 235.59 20.38 25 3.53% 2.7 71% 1.29 0.00 1.29 0 0.93 0.05 0.98 1.0 0.053 37.18 57.56 0.085 1.61 0.95 0.26 0.80 1.18 1.0 0.035 4.13 84.08 0.135 7.39 4.50 2 7.02 460 1.8E-03 3.7E+02 3.4E-04 16 0.468 5998 0.11% 2.00 0.65 0.03% 0.019 0.34 0.079 0.765 2.85% 0.0047
12.631 5603.09 8.7 0.195 8.6 16.5 7.14 2.25%Slime Tailings 0.057 113.1 0.72 0.33 0.38 1 1.70 14.586 202.75 17.14 21 2.45% 2.7 71% 1.30 0.00 1.30 0 0.93 0.05 0.98 1.0 0.053 36.06 53.20 0.081 1.53 0.95 0.24 0.80 1.18 1.0 0.035 3.89 66.77 0.108 5.82 3.67 2 7.07 460 1.8E-03 3.7E+02 3.4E-04 16 0.469 5980 0.11% 2.00 0.65 0.03% 0.019 0.34 0.079 0.765 2.88% 0.0047
12.795 5602.92 9.5 0.203 9.3 29.1 12.59 2.13%Slime Tailings 0.057 113.1 0.73 0.34 0.39 1 1.70 15.878 220.70 18.80 23 2.31% 2.6 71% 1.31 0.00 1.31 0 0.93 0.05 0.98 1.0 0.053 36.63 55.43 0.083 1.57 0.95 0.25 0.80 1.17 1.0 0.036 3.58 67.31 0.108 5.79 3.68 2 7.12 460 1.8E-03 3.7E+02 3.4E-04 16 0.469 5963 0.11% 2.00 0.65 0.03% 0.019 0.34 0.079 0.765 2.92% 0.0048
12.959 5602.76 8.1 0.206 7.9 33.3 14.44 2.53%Slime Tailings 0.057 113.1 0.73 0.34 0.39 1 1.70 13.498 187.62 16.09 19 2.78% 2.8 71% 1.32 0.00 1.32 0 0.93 0.05 0.98 1.0 0.053 35.69 51.78 0.079 1.51 0.95 0.23 0.80 1.17 1.0 0.036 4.39 70.58 0.113 5.96 3.73 2 7.17 460 1.8E-03 3.7E+02 3.5E-04 16 0.469 5946 0.11% 2.00 0.65 0.03% 0.019 0.34 0.079 0.765 2.96% 0.0049
13.123 5602.60 7.2 0.183 6.9 46.1 19.99 2.54%Slime Tailings 0.057 113.1 0.74 0.35 0.39 1 1.70 11.764 163.52 14.23 16 2.83% 2.8 71% 1.33 0.00 1.33 0 0.93 0.05 0.98 1.0 0.053 35.04 49.28 0.077 1.46 0.94 0.22 0.80 1.17 1.0 0.036 4.85 69.02 0.111 5.79 3.63 2 7.22 460 1.8E-03 3.7E+02 3.5E-04 16 0.470 5928 0.11% 2.00 0.65 0.03% 0.020 0.34 0.079 0.765 3.00% 0.0049
13.287 5602.43 10.7 0.106 10.4 37.6 16.29 0.99%Sand-Slime Tailing 0.059 119.0 0.75 0.35 0.40 1 1.70 17.731 246.46 21.06 25 1.07% 2.4 47% 1.34 0.00 1.34 0 0.93 0.05 0.98 1.0 0.052 37.69 58.74 0.086 1.65 0.94 0.26 0.80 1.17 1.0 0.036 2.40 50.63 0.092 4.77 3.21 2 7.27 460 1.8E-03 3.9E+02 3.3E-04 10 0.219 7175 0.09% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.53% 0.0042
13.451 5602.27 16.7 0.102 16.7 10.8 4.70 0.61%Sand-Slime Tailing 0.059 119.0 0.76 0.36 0.40 1 1.70 28.339 393.91 33.05 40 0.64% 2.1 47% 1.35 0.00 1.35 0 0.93 0.06 0.97 1.0 0.052 41.89 74.94 0.106 2.03 0.94 0.33 0.80 1.16 1.0 0.036 1.52 50.29 0.092 4.70 3.37 2 7.32 460 1.8E-03 3.9E+02 3.4E-04 10 0.219 7154 0.09% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.57% 0.0042
13.615 5602.10 17.2 0.121 17.1 10.8 4.69 0.70%Sand-Slime Tailing 0.059 119.0 0.77 0.36 0.41 1 1.69 29.024 403.44 33.84 40 0.74% 2.2 47% 1.36 0.00 1.36 0 0.93 0.06 0.97 1.0 0.052 42.17 76.01 0.107 2.06 0.94 0.34 0.80 1.16 1.0 0.036 1.57 53.23 0.094 4.76 3.41 2 7.37 460 1.8E-03 3.9E+02 3.4E-04 10 0.220 7132 0.10% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.61% 0.0043
13.779 5601.94 17.2 0.165 17.1 13.8 5.99 0.96%Sand-Slime Tailing 0.059 119.0 0.78 0.37 0.41 1 1.68 28.815 400.53 33.64 40 1.00% 2.2 47% 1.37 0.00 1.37 0 0.92 0.06 0.97 1.0 0.052 42.10 75.73 0.107 2.06 0.94 0.33 0.80 1.16 1.0 0.036 1.75 59.00 0.099 4.97 3.51 2 7.42 460 1.8E-03 3.9E+02 3.4E-04 10 0.220 7111 0.10% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.65% 0.0043
13.943 5601.78 17.7 0.203 17.6 15.3 6.65 1.15%Sand-Slime Tailing 0.059 119.0 0.79 0.38 0.42 1 1.67 29.281 407.00 34.19 40 1.20% 2.3 47% 1.38 0.00 1.38 0 0.92 0.06 0.97 1.0 0.052 42.29 76.49 0.108 2.08 0.94 0.34 0.80 1.16 1.0 0.036 1.86 63.68 0.104 5.16 3.62 2 7.47 460 1.8E-03 3.9E+02 3.4E-04 10 0.220 7090 0.10% 2.00 0.65 0.03% 0.018 0.34 0.079 0.765 2.69% 0.0044
14.107 5601.61 19.0 0.286 18.9 16.8 7.30 1.50%Sand-Slime Tailing 0.059 119.0 0.80 0.38 0.42 1 1.64 31.034 431.37 36.24 43 1.57% 2.3 47% 1.39 0.00 1.39 0 0.92 0.06 0.97 1.0 0.052 43.01 79.26 0.112 2.16 0.94 0.35 0.80 1.15 1.0 0.036 2.01 72.78 0.116 5.68 3.92 2 7.52 460 1.8E-03 3.9E+02 3.5E-04 10 0.221 7070 0.10% 2.00 0.65 0.03% 0.018 0.34 0.079 0.765 2.73% 0.0045
14.271 5601.45 18.8 0.300 18.7 17.6 7.62 1.59%Sand-Slime Tailing 0.059 119.0 0.81 0.39 0.43 1 1.63 30.546 424.59 35.69 42 1.67% 2.3 47% 1.39 0.00 1.39 0 0.92 0.06 0.97 1.0 0.052 42.82 78.50 0.111 2.14 0.94 0.34 0.80 1.15 1.0 0.036 2.09 74.50 0.118 5.75 3.95 2 7.57 460 1.8E-03 3.9E+02 3.5E-04 10 0.221 7049 0.10% 2.00 0.65 0.03% 0.018 0.34 0.079 0.765 2.76% 0.0045
14.436 5601.28 21.0 0.318 20.9 18.2 7.88 1.51%Sand-Slime Tailing 0.059 119.0 0.82 0.39 0.43 1 1.60 33.469 465.22 39.08 47 1.58% 2.3 47% 1.40 0.00 1.40 0 0.92 0.06 0.97 1.0 0.051 44.01 83.09 0.117 2.27 0.94 0.36 0.80 1.15 1.0 0.036 1.92 75.08 0.119 5.73 4.00 2 7.62 460 1.8E-03 3.9E+02 3.5E-04 10 0.222 7029 0.10% 2.00 0.65 0.03% 0.018 0.34 0.079 0.765 2.80% 0.0046
14.600 5601.12 18.5 0.163 18.5 9.1 3.93 0.88%Sand-Slime Tailing 0.059 119.0 0.83 0.40 0.44 1 1.61 29.799 414.21 34.72 41 0.92% 2.2 47% 1.41 0.00 1.41 0 0.92 0.06 0.97 1.0 0.051 42.48 77.19 0.109 2.12 0.94 0.34 0.80 1.15 1.0 0.036 1.68 58.41 0.099 4.69 3.40 2 7.67 500 1.8E-03 4.6E+02 3.0E-04 10 0.222 7008 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.84% 0.0030
14.764 5600.96 15.4 0.117 15.4 3.3 1.43 0.76%Sand-Slime Tailing 0.059 119.0 0.84 0.40 0.44 1 1.63 25.149 349.57 29.25 33 0.80% 2.3 47% 1.42 0.00 1.42 0 0.92 0.06 0.97 1.0 0.051 40.56 69.81 0.099 1.93 0.94 0.31 0.80 1.14 1.0 0.036 1.80 52.65 0.094 4.40 3.17 2 7.72 500 1.8E-03 4.6E+02 3.0E-04 10 0.222 6989 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.87% 0.0031
14.928 5600.79 12.2 0.162 12.2 9.3 4.03 1.32%Sand-Slime Tailing 0.059 119.0 0.85 0.41 0.45 1 1.66 20.144 280.00 23.51 26 1.42% 2.5 47% 1.43 0.00 1.43 0 0.92 0.05 0.97 1.0 0.051 38.55 62.05 0.090 1.75 0.94 0.28 0.80 1.14 1.0 0.036 2.66 62.56 0.103 4.79 3.27 2 7.77 500 1.8E-03 4.6E+02 3.0E-04 10 0.223 6969 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.90% 0.0031
15.092 5600.63 11.5 0.194 11.3 27.6 11.96 1.69%Sand-Slime Tailing 0.059 119.0 0.86 0.41 0.45 1 1.65 18.644 259.15 21.98 24 1.83% 2.6 47% 1.44 0.00 1.44 0 0.91 0.05 0.97 1.0 0.051 38.01 60.00 0.088 1.71 0.94 0.27 0.80 1.14 1.0 0.036 3.15 69.15 0.111 5.11 3.41 2 7.82 500 1.8E-03 4.6E+02 3.0E-04 10 0.223 6949 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.93% 0.0032
15.256 5600.46 10.0 0.206 9.9 14.5 6.29 2.06%Slime Tailings 0.057 113.1 0.87 0.42 0.45 1 1.65 16.317 226.81 19.13 20 2.26% 2.7 71% 1.45 0.00 1.45 0 0.91 0.05 0.97 1.0 0.051 36.75 55.87 0.083 1.62 0.94 0.25 0.80 1.14 1.0 0.036 3.84 73.49 0.117 5.35 3.49 2 7.87 500 1.8E-03 4.4E+02 3.2E-04 16 0.475 5711 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.39% 0.0039
15.420 5600.30 8.6 0.137 8.4 31.8 13.77 1.60%Slime Tailings 0.057 113.1 0.88 0.42 0.46 1 1.64 13.698 190.40 16.29 17 1.78% 2.7 71% 1.46 0.00 1.46 0 0.91 0.05 0.97 1.0 0.051 35.76 52.05 0.079 1.55 0.94 0.23 0.80 1.13 1.0 0.037 3.88 63.25 0.104 4.69 3.12 2 7.92 500 1.8E-03 4.4E+02 3.2E-04 16 0.475 5696 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.42% 0.0040
15.584 5600.14 9.3 0.108 9.1 29.9 12.95 1.16%Sand-Slime Tailing 0.059 119.0 0.89 0.43 0.46 1 1.62 14.841 206.28 17.59 18 1.28% 2.6 47% 1.47 0.00 1.47 0 0.91 0.05 0.97 1.0 0.051 36.47 54.06 0.082 1.59 0.94 0.24 0.80 1.13 1.0 0.037 3.19 56.14 0.096 4.33 2.96 2 7.97 500 1.8E-03 4.6E+02 3.1E-04 10 0.224 6893 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 2.01% 0.0033
15.748 5599.97 8.4 0.114 8.2 29.4 12.75 1.36%Sand-Slime Tailing 0.059 119.0 0.90 0.43 0.47 1 1.61 13.195 183.41 15.67 16 1.53% 2.7 47% 1.48 0.00 1.48 0 0.91 0.05 0.97 1.0 0.051 35.80 51.47 0.079 1.54 0.94 0.23 0.80 1.13 1.0 0.037 3.75 58.82 0.099 4.40 2.97 2 8.02 500 1.8E-03 4.6E+02 3.1E-04 10 0.225 6875 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 2.04% 0.0033
15.912 5599.81 7.3 0.150 7.0 43.6 18.89 2.07%Slime Tailings 0.057 113.1 0.91 0.44 0.47 1 1.60 11.168 155.23 13.48 13 2.36% 2.8 71% 1.49 0.00 1.49 0 0.91 0.05 0.97 1.0 0.051 34.78 48.26 0.076 1.48 0.94 0.21 0.80 1.13 1.0 0.037 5.07 68.29 0.110 4.83 3.16 2 8.07 500 1.8E-03 4.4E+02 3.3E-04 16 0.476 5650 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.51% 0.0041
16.076 5599.64 6.8 0.155 6.5 59.5 25.76 2.27%Slime Tailings 0.057 113.1 0.92 0.44 0.48 1 1.59 10.281 142.91 12.63 12 2.62% 2.9 71% 1.50 0.00 1.50 0 0.91 0.05 0.97 1.0 0.051 34.48 47.11 0.075 1.46 0.94 0.21 0.80 1.13 1.0 0.037 5.55 70.12 0.112 4.90 3.18 2 8.12 500 1.8E-03 4.4E+02 3.3E-04 16 0.476 5636 0.09% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.54% 0.0042
16.240 5599.48 6.4 0.150 6.0 55.9 24.23 2.36%Slime Tailings 0.057 113.1 0.93 0.45 0.48 1 1.58 9.501 132.07 11.67 11 2.76% 2.9 71% 1.51 0.00 1.51 0 0.91 0.05 0.97 1.0 0.051 34.15 45.83 0.074 1.44 0.94 0.20 0.80 1.12 1.0 0.037 6.01 70.18 0.112 4.86 3.15 2 8.17 500 1.8E-03 4.4E+02 3.4E-04 16 0.477 5622 0.09% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.56% 0.0042
16.404 5599.32 6.2 0.155 5.8 62.4 27.06 2.49%Slime Tailings 0.057 113.1 0.94 0.45 0.48 1 1.57 9.139 127.04 11.32 11 2.93% 3.0 71% 1.52 0.00 1.52 0 0.90 0.05 0.97 1.0 0.051 34.03 45.36 0.073 1.44 0.94 0.19 0.80 1.12 1.0 0.037 6.31 71.49 0.114 4.90 3.17 2 8.22 500 1.8E-03 4.4E+02 3.4E-04 16 0.477 5607 0.09% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.59% 0.0043
16.568 5599.15 6.4 0.156 6.0 61.6 26.67 2.43%Slime Tailings 0.057 113.1 0.95 0.46 0.49 1 1.56 9.390 130.52 11.60 11 2.85% 2.9 71% 1.53 0.00 1.53 0 0.90 0.05 0.97 1.0 0.051 34.13 45.73 0.074 1.45 0.94 0.20 0.80 1.12 1.0 0.037 6.14 71.27 0.114 4.85 3.15 2 8.27 500 1.8E-03 4.4E+02 3.4E-04 16 0.477 5593 0.10% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.62% 0.0043
16.732 5598.99 6.5 0.127 6.1 59.1 25.59 1.96%Slime Tailings 0.057 113.1 0.95 0.46 0.49 1 1.55 9.436 131.16 11.62 11 2.30% 2.9 71% 1.54 0.00 1.54 0 0.90 0.05 0.97 1.0 0.051 34.13 45.76 0.074 1.45 0.94 0.20 0.80 1.12 1.0 0.037 5.62 65.37 0.106 4.49 2.97 2 8.32 500 1.8E-03 4.4E+02 3.4E-04 16 0.478 5580 0.10% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.65% 0.0043
16.896 5598.82 6.4 0.116 6.1 51.0 22.11 1.81%Slime Tailings 0.057 113.1 0.96 0.47 0.50 1 1.54 9.374 130.30 11.46 11 2.13% 2.9 71% 1.55 0.00 1.55 0 0.90 0.05 0.97 1.0 0.051 34.08 45.53 0.073 1.45 0.94 0.20 0.80 1.12 1.0 0.037 5.51 63.14 0.103 4.34 2.89 2 8.37 500 1.8E-03 4.4E+02 3.4E-04 16 0.478 5566 0.10% 2.00 0.65 0.03% 0.018 0.34 0.079 0.765 2.68% 0.0044
17.060 5598.66 5.5 0.121 5.1 60.9 26.40 2.22%Slime Tailings 0.057 113.1 0.97 0.47 0.50 1 1.53 7.756 107.81 9.68 9 2.70% 3.0 71% 1.56 0.00 1.56 0 0.90 0.04 0.97 1.0 0.051 33.46 43.14 0.071 1.41 0.94 0.18 0.80 1.11 1.0 0.037 6.87 66.48 0.107 4.47 2.94 2 8.42 500 1.8E-03 4.4E+02 3.5E-04 16 0.478 5552 0.10% 2.00 0.65 0.03%0.018 0.34 0.079 0.765 2.71% 0.0044
17.224 5598.50 5.3 0.143 4.9 60.8 26.34 2.71%Slime Tailings 0.057 113.1 0.98 0.48 0.51 1 1.52 7.433 103.32 9.30 9 3.33% 3.1 71% 1.57 0.00 1.57 0 0.90 0.04 0.97 1.0 0.051 33.33 42.63 0.071 1.40 0.94 0.18 0.80 1.11 1.0 0.037 7.68 71.47 0.114 4.71 3.05 2 8.47 500 1.8E-03 4.4E+02 3.5E-04 16 0.479 5539 0.10% 2.00 0.65 0.03%0.018 0.34 0.079 0.765 2.74% 0.0045
Midpoint Depth at t1, z1
Shear Wave Velocity, Vs
Soil Density, ρ (tcf)b
Threshhol
d Shear Strain, γtv
(%)
Volumetri
c Strain at
15 Cycles,
εc-15 (%)Rc
Plasticity Index, PI g1 g2
Shear Strain, γ (%)a
Depth at t1, z1
Soil Density, ρ
Maximum Shear Strain
Modulus,
Gmax
P =
γeff*(Geff/Gmax)
Plastici
ty Index, PI
High Compaction Layer
Platform/Random Fill Layer
Seismic Settlement Analysis - Stewart et al (2004)
Effective Stress at Bottom of Layer
Effective Stress at Midpoint of Layer FINAL COVER
Erosion Protection Layer
Water Storage/Rooting Zone Layer
qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Equil Pore Pressure at Midpoint of Layer (tsf)
Max Shear
Strain
Modulus,
Gmax (tsf)
P = γeff*(Geff
/Gmax)
(tsf)
Volumetric Strain for Design Event, εv (%)
Incrementa
l Consolidation (ft)
CN
Volumetric
Strain for
Design
Event, εv (%)
Incremental Consolidation (ft)
TOTAL SEISMIC SETTLEMENT (FT):Threshhol
d Shear
Strain, γtv (%)
Volumetric Strain at 15 Cycles, εc-15 (%)RcCNg1g2
Shear
Strain, γ ab
Effective Stress at t1
Saturated at t1
Idriss & Boulanger (2008) Youd et al. (2001)
Unit Weight (tcf)
Unit Weight (pcf)
Total Stress at Bottom of Layer
Total Stress at Midpoint of Layer
Equil Pore Pressure at Bottom of Layer
Cyclic Resistance Ratio
FoS
Cyclic Stress Ratio
FoS
CSR
M=7.5,
s'v=1atm
∆qc1n qc1n-cs
(CRR)
M=7.5,
s'v=1atm
CSR
M=7.5,
s'v=1atm
Kc
Pw (u2)Pw (u2)
2013 CPT Data from ConeTec CPT Data Interpretations
fs/qt
Material
Type (as determined by fines
Unit Weight Unit Weight
Total
Stress
at time of CPT
Depth
at time of CPT Elevation qt fs qc
Effective
Stress at
time of CPT
Saturated
at time of CPT
Type Index,
Ic FC
Idriss and Boulanger (2008)
Max. Horiz. Acceleration, Amax/g:
Earthquake Moment Magnitude, M:
Magnitude Scaling Factor, MSF:
WHITE MESA TAILINGS REPOSITORY LIQUEFACTION AND SEISMIC SETTLEMENT ANALYSES - 2W3 Elev. at Top of Layer (ft)
Elev. At Midpoint of Layer (ft)
Elev. At Bottom of Layer
Thickness of Layer (ft)
Scaling Factor for stress ration, rm
Volumetric Strain Ratio for Site-Specific Design Ear
Equiv. Number of Uniform Strain Cycles, N
Youd, et al (2001)
Shear Wave Velocity, Vs
Max. Horiz. Acceleration, Amax/g: 0.15
Earthquake Moment Magnitude, M: 5.5
Magnitude Scaling Factor, MSF:
Equil
Pore
Pressure at time of
Conditions at t1 Liquefaction Triggering AnalysesEquil
Pore Pressure at t1CN qc1 qc1 qc1N
Normalized
Cone
Penetration Resistance, Qt
Normalize
d Friction
Ratio, Fr (%)
Total Stress at t1 Liquefiable?1=Yes
2=No
Cyclic Stress Ratio
Liquef_SeismicSettle_30Aug2015.xls Page 6 of 29
Energy Fuels Resources (USA) Inc.White Mesa Mill
Seismic Settlement Analyses
Data File: 13-52106_SP2W3-BSC-CPT 5613.80 Water surface elevation during CPT investigation (ft5615.72 Ground Surface Elevation at time of CPT (ft amsl)
Location: White Mesa 2013 CPT Investigation 0.15 5607.44 Water surface elevation at t0 (ft amsl)5626.27 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl)
..\..\..\6.2.3 Field Data\2013 Field Investigation\Conetec Dat 5.5 5597.74 Water surface elevation at t1 (ft amsl) 0.50 Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after plac ###### 5626.02 5625.77 0.50 0.055 110 0.028 0.014 0.00 0.00 0.028 0.014 0.08 508 1.7E-03 4.4E+02 3.0E-06 11 0.068 46696 0.00% 1.20 0.80 0.04% 0.000 0.32 0.133 0.778 0.00% 0.0000
Tailings Sands 1.69 5592.74 Water surface elevation at t2 (ft amsl)3.50 Thickness of Water Storage/Rooting Zone (ft)###### 5624.02 5622.27 3.50 0.054 107 0.215 0.121 0.00 0.00 0.215 0.121 0.69 508 1.7E-03 4.3E+02 2.8E-05 11 0.118 18930 0.00% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
Tailings Sand-Slimes 4.00 Thickness of High Compaction Layer (ft)###### 5620.27 5618.27 4.00 0.060 120 0.454 0.334 0.00 0.00 0.454 0.334 1.83 508 1.9E-03 4.8E+02 6.8E-05 11 0.153 12419 0.01% 0.65 0.75 0.02% 0.000 0.34 0.079 0.765 0.00% 0.0000
Tailings Slimes 1.44 2.55 Thickness of Random/Platform Fill on on top of existing interim cover (ft) ###### 5617 5615.72 2.55 0.050 101 0.582 0.518 0.00 0.00 0.582 0.518 2.83 508 1.6E-03 4.0E+02 1.3E-04 11 0.172 10354 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
Interim Cover 0.47 1164.98 Additional Stress due to Final Cover Placement, ΔσFC (psf)
Cells Requiring User Input/Manipulation 2.21 2.21 7.51 5592.74 Elevation of bottom of tailings (liner) (ft amsl)
0.363
rd Cσ Kσ Ka rd Dr f Kσ Ka Avg
(ft) (ft amsl) TSF TSF TSF (ft) PSI (%) (tcf) (pcf) (tsf)(tsf)(tsf) 1=Yes TSF MPa % (tsf)(tsf)(tsf) 1=Yes FoS m
0=No 0=No (ft/sec) (tcf) tsf tsf (%)
Midpoint Depth at t1, z1
Shear Wave Velocity, Vs
Soil Density, ρ (tcf)b
Threshhol
d Shear Strain, γtv
(%)
Volumetri
c Strain at
15 Cycles,
εc-15 (%)Rc
Plasticity Index, PI g1 g2
Shear Strain, γ (%)a
Depth at t1, z1
Soil Density, ρ
Maximum Shear Strain
Modulus,
Gmax
P =
γeff*(Geff/Gmax)
Plastici
ty Index, PI
High Compaction Layer
Platform/Random Fill Layer
Seismic Settlement Analysis - Stewart et al (2004)
Effective Stress at Bottom of Layer
Effective Stress at Midpoint of Layer FINAL COVER
Erosion Protection Layer
Water Storage/Rooting Zone Layer
qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Equil Pore Pressure at Midpoint of Layer (tsf)
Max Shear
Strain
Modulus,
Gmax (tsf)
P = γeff*(Geff
/Gmax)
(tsf)
Volumetric Strain for Design Event, εv (%)
Incrementa
l Consolidation (ft)
CN
Volumetric
Strain for
Design
Event, εv (%)
Incremental Consolidation (ft)
TOTAL SEISMIC SETTLEMENT (FT):Threshhol
d Shear
Strain, γtv (%)
Volumetric Strain at 15 Cycles, εc-15 (%)RcCNg1g2
Shear
Strain, γ ab
Effective Stress at t1
Saturated at t1
Idriss & Boulanger (2008) Youd et al. (2001)
Unit Weight (tcf)
Unit Weight (pcf)
Total Stress at Bottom of Layer
Total Stress at Midpoint of Layer
Equil Pore Pressure at Bottom of Layer
Cyclic Resistance Ratio
FoS
Cyclic Stress Ratio
FoS
CSR
M=7.5,
s'v=1atm
∆qc1n qc1n-cs
(CRR)
M=7.5,
s'v=1atm
CSR
M=7.5,
s'v=1atm
Kc
Pw (u2)Pw (u2)
2013 CPT Data from ConeTec CPT Data Interpretations
fs/qt
Material
Type (as determined by fines
Unit Weight Unit Weight
Total
Stress
at time of CPT
Depth
at time of CPT Elevation qt fs qc
Effective
Stress at
time of CPT
Saturated
at time of CPT
Type Index,
Ic FC
Idriss and Boulanger (2008)
Max. Horiz. Acceleration, Amax/g:
Earthquake Moment Magnitude, M:
Magnitude Scaling Factor, MSF:
WHITE MESA TAILINGS REPOSITORY LIQUEFACTION AND SEISMIC SETTLEMENT ANALYSES - 2W3 Elev. at Top of Layer (ft)
Elev. At Midpoint of Layer (ft)
Elev. At Bottom of Layer
Thickness of Layer (ft)
Scaling Factor for stress ration, rm
Volumetric Strain Ratio for Site-Specific Design Ear
Equiv. Number of Uniform Strain Cycles, N
Youd, et al (2001)
Shear Wave Velocity, Vs
Max. Horiz. Acceleration, Amax/g: 0.15
Earthquake Moment Magnitude, M: 5.5
Magnitude Scaling Factor, MSF:
Equil
Pore
Pressure at time of
Conditions at t1 Liquefaction Triggering AnalysesEquil
Pore Pressure at t1CN qc1 qc1 qc1N
Normalized
Cone
Penetration Resistance, Qt
Normalize
d Friction
Ratio, Fr (%)
Total Stress at t1 Liquefiable?1=Yes
2=No
Cyclic Stress Ratio
17.388 5598.33 5.4 0.167 5.0 60.4 26.17 3.09%Slime Tailings 0.057 113.1 0.99 0.48 0.51 1 1.51 7.567 105.17 9.45 9 3.79% 3.1 71% 1.57 0.00 1.57 0 0.90 0.04 0.97 1.0 0.050 33.38 42.83 0.071 1.41 0.93 0.18 0.80 1.11 1.0 0.037 8.01 75.70 0.120 4.93 3.17 2 8.52 500 1.8E-03 4.4E+02 3.5E-04 16 0.479 5525 0.10% 2.00 0.65 0.03%0.018 0.34 0.079 0.765 2.77% 0.0045
17.552 5598.17 8.1 0.153 7.8 49.8 21.59 1.90%Slime Tailings 0.057 113.1 1.00 0.49 0.51 1 1.50 11.622 161.55 14.04 14 2.16% 2.8 71% 1.58 0.00 1.58 0 0.90 0.05 0.97 1.0 0.050 34.98 49.02 0.077 1.52 0.93 0.22 0.80 1.11 1.0 0.037 4.80 67.46 0.109 4.42 2.97 2 8.57 500 1.8E-03 4.4E+02 3.5E-04 16 0.479 5512 0.10% 2.00 0.65 0.03% 0.018 0.34 0.079 0.765 2.79% 0.0046
17.716 5598.00 12.1 0.146 11.9 23.4 10.13 1.21%Sand-Slime Tailing 0.059 119.0 1.01 0.49 0.52 1 1.49 17.713 246.21 20.82 21 1.32% 2.5 47% 1.59 0.00 1.59 0 0.89 0.05 0.97 1.0 0.050 37.61 58.43 0.086 1.72 0.93 0.26 0.80 1.11 1.0 0.037 2.91 60.54 0.101 4.06 2.89 2 8.62 500 1.8E-03 4.6E+02 3.4E-04 10 0.229 6670 0.09% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.37% 0.0039
17.880 5597.84 14.1 0.132 14.0 21.9 9.47 0.94%Sand-Slime Tailing 0.059 119.0 1.02 0.50 0.52 1 1.46 20.417 283.79 23.94 25 1.01% 2.4 47% 1.60 0.00 1.60 0 0.89 0.06 0.97 1.0 0.050 38.70 62.64 0.091 1.82 0.93 0.28 0.80 1.10 1.0 0.037 2.34 56.01 0.096 3.85 2.84 2 8.67 500 1.8E-03 4.6E+02 3.4E-04 10 0.229 6653 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.40% 0.0039
18.044 5597.68 14.0 0.074 13.9 17.3 7.51 0.53%Sand-Slime Tailing 0.059 119.0 1.03 0.50 0.53 1 1.45 20.197 280.74 23.64 25 0.57% 2.3 47% 1.61 0.00 1.61 1 0.89 0.05 0.97 1.0 0.050 38.59 62.23 0.090 1.81 0.93 0.28 0.80 1.10 1.0 0.037 1.94 45.86 0.088 3.49 2.65 2 8.72 500 1.8E-03 4.6E+02 3.4E-04 10 0.229 6640 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.43% 0.0040
18.208 5597.51 11.8 0.070 11.7 17.2 7.43 0.59%Sand-Slime Tailing 0.059 119.0 1.04 0.51 0.53 1 1.46 16.985 236.10 19.91 20 0.65% 2.4 47% 1.62 0.01 1.62 1 0.89 0.05 0.97 1.0 0.050 37.28 57.19 0.085 1.70 0.93 0.26 0.80 1.10 1.0 0.038 2.31 46.04 0.088 3.46 2.58 2 8.77 500 1.8E-03 4.6E+02 3.4E-04 10 0.230 6632 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.46% 0.0040
18.372 5597.35 9.1 0.178 8.9 23.4 10.12 1.96%Slime Tailings 0.057 113.1 1.05 0.51 0.54 1 1.45 12.930 179.72 15.26 15 2.22% 2.8 71% 1.63 0.01 1.62 1 0.89 0.05 0.97 1.0 0.050 35.40 50.66 0.078 1.56 0.93 0.23 0.80 1.10 1.0 0.038 4.60 70.24 0.112 4.35 2.95 2 8.82 500 1.8E-03 4.4E+02 3.6E-04 16 0.481 5461 0.11% 2.00 0.65 0.03% 0.019 0.34 0.079 0.765 2.96% 0.0049
18.537 5597.18 6.8 0.214 6.6 44.6 19.31 3.12%Slime Tailings 0.057 113.1 1.06 0.52 0.54 1 1.44 9.455 131.43 11.45 11 3.70% 3.0 71% 1.64 0.02 1.62 1 0.89 0.05 0.97 1.0 0.050 34.07 45.52 0.073 1.46 0.93 0.20 0.80 1.10 1.0 0.038 7.03 80.43 0.128 4.92 3.19 2 8.87 500 1.8E-03 4.4E+02 3.6E-04 16 0.481 5455 0.11% 2.00 0.65 0.03% 0.020 0.34 0.079 0.765 2.99% 0.0049
18.701 5597.02 12.2 0.207 12.1 17.2 7.44 1.70%Sand-Slime Tailing 0.059 119.0 1.07 0.52 0.55 1 1.43 17.226 239.45 20.19 20 1.87% 2.6 47% 1.65 0.02 1.63 1 0.89 0.05 0.97 1.0 0.050 37.38 57.57 0.085 1.70 0.93 0.26 0.80 1.10 1.0 0.038 3.49 70.44 0.113 4.27 2.98 2 8.92 500 1.8E-03 4.6E+02 3.5E-04 10 0.230 6610 0.09% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.56% 0.0042
18.865 5596.86 12.4 0.172 12.2 21.3 9.23 1.39%Sand-Slime Tailing 0.059 119.0 1.08 0.53 0.55 1 1.42 17.382 241.62 20.41 21 1.52% 2.6 47% 1.66 0.03 1.63 1 0.89 0.05 0.97 1.0 0.050 37.46 57.87 0.086 1.70 0.93 0.26 0.80 1.09 1.0 0.038 3.17 64.62 0.105 3.94 2.82 2 8.97 500 1.8E-03 4.6E+02 3.5E-04 10 0.230 6603 0.09% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.59% 0.0043
19.029 5596.69 14.4 0.138 14.3 22.3 9.64 0.96%Sand-Slime Tailing 0.059 119.0 1.09 0.53 0.55 1 1.40 20.001 278.01 23.46 24 1.04% 2.4 47% 1.67 0.03 1.64 1 0.88 0.05 0.96 1.0 0.050 38.53 61.98 0.090 1.79 0.93 0.28 0.80 1.09 1.0 0.038 2.42 56.88 0.097 3.60 2.70 2 9.02 500 1.8E-03 4.6E+02 3.5E-04 10 0.230 6595 0.10% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.63% 0.0043
19.193 5596.53 15.7 0.130 15.6 20.8 8.99 0.83%Sand-Slime Tailing 0.059 119.0 1.10 0.54 0.56 1 1.39 21.538 299.38 25.22 26 0.89% 2.4 47% 1.68 0.04 1.64 1 0.88 0.06 0.96 1.0 0.050 39.15 64.37 0.093 1.84 0.93 0.29 0.80 1.09 1.0 0.039 2.17 54.73 0.095 3.49 2.67 2 9.07 500 1.8E-03 4.6E+02 3.5E-04 10 0.230 6587 0.10% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.66% 0.0044
19.357 5596.36 16.7 0.123 16.5 23.1 9.99 0.74%Sand-Slime Tailing 0.059 119.0 1.11 0.54 0.56 1 1.37 22.650 314.83 26.54 28 0.79% 2.3 47% 1.69 0.04 1.65 1 0.88 0.06 0.96 1.0 0.050 39.61 66.14 0.095 1.88 0.93 0.30 0.80 1.09 1.0 0.039 2.00 53.20 0.094 3.41 2.65 2 9.12 500 1.8E-03 4.6E+02 3.6E-04 10 0.231 6579 0.10% 2.00 0.65 0.03% 0.018 0.34 0.079 0.765 2.69% 0.0044
19.521 5596.20 16.7 0.112 16.5 24.3 10.52 0.67%Sand-Slime Tailing 0.059 119.0 1.12 0.55 0.57 1 1.36 22.519 313.02 26.39 27 0.72% 2.3 47% 1.70 0.05 1.65 1 0.88 0.06 0.96 1.0 0.050 39.56 65.95 0.095 1.88 0.93 0.30 0.80 1.09 1.0 0.039 1.95 51.52 0.093 3.33 2.60 2 9.17 500 1.8E-03 4.6E+02 3.6E-04 10 0.231 6572 0.10% 2.00 0.65 0.03% 0.018 0.34 0.079 0.765 2.73% 0.0045
19.685 5596.04 16.2 0.142 16.1 26.1 11.31 0.88%Sand-Slime Tailing 0.059 119.0 1.13 0.55 0.57 1 1.36 21.815 303.23 25.59 26 0.94% 2.4 47% 1.71 0.05 1.66 1 0.88 0.06 0.96 1.0 0.051 39.28 64.87 0.093 1.85 0.93 0.29 0.80 1.08 1.0 0.039 2.20 56.30 0.097 3.44 2.64 2 9.22 538 1.8E-03 5.3E+02 3.1E-04 10 0.231 6564 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.91% 0.0031
19.849 5595.87 13.7 0.203 13.5 30.3 13.14 1.48%Sand-Slime Tailing 0.059 119.0 1.14 0.56 0.58 1 1.36 18.424 256.09 21.70 22 1.62% 2.6 47% 1.72 0.06 1.66 1 0.88 0.05 0.96 1.0 0.051 37.91 59.61 0.087 1.73 0.93 0.27 0.80 1.08 1.0 0.039 3.13 67.89 0.109 3.85 2.79 2 9.27 538 1.8E-03 5.3E+02 3.1E-04 10 0.231 6556 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.94% 0.0032
20.013 5595.71 9.9 0.190 9.6 41.6 18.02 1.92%Slime Tailings 0.057 113.1 1.15 0.56 0.58 1 1.36 13.071 181.68 15.59 15 2.18% 2.8 71% 1.73 0.06 1.67 1 0.88 0.05 0.97 1.0 0.051 35.52 51.11 0.079 1.54 0.93 0.23 0.80 1.08 1.0 0.039 4.55 71.01 0.113 3.96 2.75 2 9.32 538 1.8E-03 5.1E+02 3.3E-04 16 0.482 5399 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.38% 0.0039
20.177 5595.54 8.7 0.172 8.3 65.6 28.43 1.98%Slime Tailings 0.057 113.1 1.16 0.57 0.59 1 1.35 11.187 155.51 13.64 13 2.28% 2.8 71% 1.74 0.07 1.67 1 0.87 0.05 0.97 1.0 0.051 34.84 48.47 0.076 1.49 0.92 0.21 0.80 1.08 1.0 0.039 5.13 70.00 0.112 3.88 2.68 2 9.37 538 1.8E-03 5.1E+02 3.3E-04 16 0.482 5394 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.41% 0.0039
20.341 5595.38 8.9 0.207 8.5 67.9 29.41 2.32%Slime Tailings 0.057 113.1 1.16 0.57 0.59 1 1.34 11.394 158.38 13.90 13 2.67% 2.9 71% 1.75 0.07 1.67 1 0.87 0.05 0.97 1.0 0.051 34.93 48.82 0.076 1.50 0.92 0.22 0.80 1.08 1.0 0.039 5.43 75.40 0.120 4.12 2.81 2 9.42 538 1.8E-03 5.1E+02 3.4E-04 16 0.483 5388 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.43% 0.0040
20.505 5595.22 9.3 0.168 8.9 65.7 28.45 1.81%Slime Tailings 0.057 113.1 1.17 0.58 0.59 1 1.34 11.840 164.57 14.39 14 2.08% 2.8 71% 1.76 0.08 1.68 1 0.87 0.05 0.97 1.0 0.051 35.10 49.49 0.077 1.51 0.92 0.22 0.80 1.08 1.0 0.039 4.75 68.35 0.110 3.74 2.62 2 9.47 538 1.8E-03 5.1E+02 3.4E-04 16 0.483 5383 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.46% 0.0040
20.669 5595.05 12.9 0.090 12.6 43.1 18.67 0.70%Sand-Slime Tailing 0.059 119.0 1.18 0.58 0.60 1 1.33 16.762 232.99 19.88 20 0.77% 2.4 47% 1.77 0.08 1.68 1 0.87 0.05 0.96 1.0 0.051 37.27 57.16 0.085 1.66 0.92 0.26 0.80 1.08 1.0 0.040 2.50 49.68 0.091 3.09 2.37 2 9.52 538 1.8E-03 5.3E+02 3.2E-04 10 0.232 6522 0.08% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 2.06% 0.0034
20.833 5594.89 13.2 0.156 13.1 27.5 11.92 1.18%Sand-Slime Tailing 0.059 119.0 1.19 0.59 0.60 1 1.32 17.242 239.67 20.29 20 1.30% 2.5 47% 1.78 0.09 1.69 1 0.87 0.05 0.96 1.0 0.051 37.42 57.71 0.085 1.67 0.92 0.26 0.80 1.07 1.0 0.040 3.02 61.18 0.101 3.39 2.53 2 9.57 538 1.8E-03 5.3E+02 3.2E-04 10 0.232 6514 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.09% 0.0034
20.997 5594.72 9.7 0.180 9.2 68.8 29.83 1.86%Slime Tailings 0.057 113.1 1.20 0.60 0.61 1 1.31 12.134 168.66 14.75 14 2.13% 2.8 71% 1.79 0.09 1.69 1 0.87 0.05 0.97 1.0 0.051 35.22 49.97 0.077 1.51 0.92 0.22 0.80 1.07 1.0 0.040 4.73 69.77 0.112 3.70 2.61 2 9.62 538 1.8E-03 5.1E+02 3.4E-04 16 0.483 5365 0.09% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.54% 0.0042
21.161 5594.56 9.1 0.158 8.5 91.2 39.53 1.73%Slime Tailings 0.057 113.1 1.21 0.60 0.61 1 1.31 11.155 155.05 13.82 13 2.00% 2.8 71% 1.79 0.10 1.70 1 0.87 0.05 0.97 1.0 0.051 34.90 48.72 0.076 1.49 0.92 0.21 0.80 1.07 1.0 0.040 4.84 66.95 0.108 3.55 2.52 2 9.67 538 1.8E-03 5.1E+02 3.4E-04 16 0.483 5360 0.09% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.57% 0.0042
21.325 5594.39 9.1 0.173 8.5 87.2 37.78 1.90%Slime Tailings 0.057 113.1 1.22 0.61 0.62 1 1.30 11.096 154.23 13.71 13 2.20% 2.8 71% 1.80 0.10 1.70 1 0.87 0.05 0.97 1.0 0.051 34.86 48.57 0.076 1.48 0.91 0.21 0.80 1.07 1.0 0.040 5.08 69.61 0.111 3.64 2.56 2 9.72 538 1.8E-03 5.1E+02 3.5E-04 16 0.483 5354 0.10% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.60% 0.0043
21.489 5594.23 10.0 0.173 9.4 103.1 44.66 1.73%Sand-Slime Tailing 0.059 119.0 1.23 0.61 0.62 1 1.29 12.116 168.41 15.04 14 1.97% 2.8 47% 1.81 0.11 1.70 1 0.86 0.05 0.97 1.0 0.051 35.58 50.61 0.078 1.52 0.91 0.22 0.80 1.07 1.0 0.040 4.53 68.09 0.109 3.54 2.53 2 9.77 538 1.8E-03 5.3E+02 3.3E-04 10 0.233 6487 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.19% 0.0036
21.653 5594.07 11.1 0.173 10.5 102.2 44.29 1.56%Sand-Slime Tailing 0.059 119.0 1.24 0.62 0.63 1 1.28 13.420 186.53 16.54 16 1.76% 2.7 47% 1.82 0.11 1.71 1 0.86 0.05 0.97 1.0 0.051 36.10 52.64 0.080 1.56 0.91 0.23 0.80 1.07 1.0 0.040 4.02 66.55 0.107 3.45 2.50 2 9.82 538 1.8E-03 5.3E+02 3.3E-04 10 0.233 6480 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.22% 0.0036
22.980 5592.74 Sand-Slime Tailing 0.059 119.0 1.90 0.14 1.77 1 10.22 538 1.8E-03 5.3E+02 3.5E-04 10 0.235 6391 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.43% 0.0322
Extra layer added to analyze seismic settlement of tailings below the bottom of CPT investigation.
Liquef_SeismicSettle_30Aug2015.xls Page 7 of 29
Energy Fuels Resources (USA) Inc.White Mesa Mill
Seismic Settlement Analyses
Data File: 13-52106_SP2W4-C-BSC-CPT 5611.20 Water surface elevation during CPT investigation (ft am5616.24 Ground Surface Elevation at time of CPT (ft amsl)
Location: White Mesa 2013 CPT Investigation 0.15 5607.96 Water surface elevation at t0 (ft amsl)5626.19 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl)
..\..\..\6.2.3 Field Data\2013 Field Investigation\Conetec Dat 5.5 5593.50 Water surface elevation at t1 (ft amsl) 0.50 Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after plac 5626.19 5625.94 5625.69 0.50 0.055 110 0.028 0.014 0.00 0.00 0.028 0.014 0.08 508 1.7E-03 4.4E+02 3.0E-06 11 0.068 46696 0.00% 1.20 0.80 0.04% 0.000 0.32 0.133 0.778 0.00% 0.0000
Tailings Sands 1.69 5588.50 Water surface elevation at t2 (ft amsl)3.50 Thickness of Water Storage/Rooting Zone (ft)5625.69 5623.94 5622.19 3.50 0.054 107 0.215 0.121 0.00 0.00 0.215 0.121 0.69 508 1.7E-03 4.3E+02 2.8E-05 11 0.118 18930 0.00% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
Tailings Sand-Slimes 4.00 Thickness of High Compaction Layer (ft)5622.19 5620.19 5618.19 4.00 0.060 120 0.454 0.334 0.00 0.00 0.454 0.334 1.83 508 1.9E-03 4.8E+02 6.8E-05 11 0.153 12419 0.01% 0.65 0.75 0.02% 0.000 0.34 0.079 0.765 0.00% 0.0000
Tailings Slimes 1.44 1.95 Thickness of Random/Platform Fill on on top of existing interim cover (ft) 5618.19 5617.22 5616.24 1.95 0.050 101 0.552 0.503 0.00 0.00 0.552 0.503 2.74 508 1.6E-03 4.0E+02 1.2E-04 11 0.170 10482 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
Interim Cover 0.47 1104.55 Additional Stress due to Final Cover Placement, ΔσFC (psf)
Cells Requiring User Input/Manipulation 2.21 2.21 7.51 5588.50 Elevation of bottom of tailings (liner) (ft amsl)
0.425
rd Cσ Kσ Ka rd Dr f Kσ Ka Avg
(ft) (ft amsl) TSF TSF TSF (ft) PSI (%) (tcf) (pcf) (tsf)(tsf)(tsf) 1=Yes TSF MPa % (tsf)(tsf)(tsf) 1=Yes FoS m
0=No 0=No (ft/sec) (tcf) tsf tsf (%)
0.164 5616.08 20.1 0.057 20.0 8.1 3.50 0.28%Interim Cover 0.050 100.7 0.01 0.00 0.01 0 1.70 34.068 473.55 39.67 2431 0.28% 0.7 51% 0.56 0.00 0.56 0 1.00 0.06 1.03 1.0 0.059 44.24 83.91 0.118 1.99 0.98 0.36 0.80 2.53 1.0 0.017 1.00 39.67 0.083 201.04 101.51 2 3.08 594 1.6E-03 5.5E+02 9.9E-05 11 0.175 10022 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
0.328 5615.91 44.3 0.080 44.3 3.0 1.28 0.18%Interim Cover 0.050 100.7 0.02 0.00 0.02 0 1.70 75.242 1045.86 87.43 2679 0.18% 0.5 51% 0.57 0.00 0.57 0 1.00 0.10 1.04 1.0 0.060 61.00 148.43 0.264 4.40 0.98 0.54 0.73 2.91 1.0 0.015 1.00 87.43 0.142 172.13 88.26 2 3.13 594 1.6E-03 5.5E+02 1.0E-04 11 0.176 9961 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
0.492 5615.75 56.7 0.160 56.7 4.6 1.97 0.28%Interim Cover 0.050 100.7 0.02 0.00 0.02 0 1.70 96.373 1339.58 111.99 2287 0.28% 0.7 51% 0.58 0.00 0.58 0 1.00 0.12 1.05 1.0 0.061 69.62 181.61 0.563 9.30 0.98 0.61 0.69 2.96 1.0 0.015 1.00 111.99 0.211 170.09 89.70 2 3.18 594 1.6E-03 5.5E+02 1.0E-04 11 0.176 9902 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
0.656 5615.58 59.2 0.227 59.2 1.6 0.69 0.38%Interim Cover 0.050 100.7 0.03 0.00 0.03 0 1.70 100.708 1399.84 116.99 1792 0.38% 0.8 51% 0.59 0.00 0.59 0 1.00 0.12 1.05 1.0 0.061 71.37 188.36 0.707 11.68 0.98 0.62 0.69 2.77 1.0 0.016 1.00 116.99 0.229 138.70 75.19 2 3.23 594 1.6E-03 5.5E+02 1.0E-04 11 0.177 9844 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
0.820 5615.42 57.7 0.368 57.7 1.8 0.79 0.64%Interim Cover 0.050 100.7 0.04 0.00 0.04 0 1.70 98.107 1363.69 113.97 1396 0.64% 1.1 51% 0.59 0.00 0.59 0 1.00 0.12 1.04 1.0 0.060 70.32 184.28 0.614 10.17 0.97 0.62 0.69 2.55 1.0 0.017 1.00 113.97 0.218 105.56 57.86 2 3.28 594 1.6E-03 5.5E+02 1.0E-04 11 0.178 9786 0.01%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
0.984 5615.26 76.8 0.959 76.8 3.0 1.30 1.25%Interim Cover 0.050 100.7 0.05 0.00 0.05 0 1.70 130.509 1814.08 151.62 1548 1.25% 1.3 51% 0.60 0.00 0.60 0 1.00 0.16 1.06 1.0 0.061 83.53 235.14 1.000 16.35 0.97 0.71 0.64 2.76 1.0 0.016 1.00 151.62 0.404 163.38 89.86 2 3.33 594 1.6E-03 5.5E+02 1.1E-04 11 0.178 9730 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.148 5615.09 85.7 0.894 85.6 3.7 1.58 1.04%Interim Cover 0.050 100.7 0.06 0.00 0.06 0 1.70 145.571 2023.44 169.12 1480 1.04% 1.3 51% 0.61 0.00 0.61 0 1.00 0.19 1.07 1.0 0.062 89.67 258.79 1.000 16.23 0.97 0.75 0.62 2.76 1.0 0.016 1.00 169.12 1.000 346.66 181.45 2 3.38 594 1.6E-03 5.5E+02 1.1E-04 11 0.179 9676 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.312 5614.93 82.5 0.999 82.4 17.4 7.54 1.21%Interim Cover 0.050 100.7 0.07 0.00 0.07 0 1.70 140.046 1946.64 162.87 1247 1.21% 1.4 51% 0.62 0.00 0.62 0 1.00 0.18 1.06 1.0 0.061 87.48 250.35 1.000 16.33 0.97 0.74 0.63 2.57 1.0 0.017 1.00 162.87 1.000 303.45 159.89 2 3.43 594 1.6E-03 5.5E+02 1.1E-04 11 0.179 9622 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.476 5614.76 93.6 0.450 93.6 0.8 0.34 0.48%Interim Cover 0.050 100.7 0.07 0.00 0.07 0 1.70 159.120 2211.77 184.82 1258 0.48% 1.0 51% 0.63 0.00 0.63 0 1.00 0.22 1.07 1.0 0.062 95.18 280.00 1.000 16.16 0.97 0.78 0.61 2.61 1.0 0.016 1.00 184.82 1.000 269.84 143.00 2 3.48 594 1.6E-03 5.5E+02 1.1E-04 11 0.180 9569 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.640 5614.60 40.2 0.533 40.2 -0.8 -0.35 1.33%Interim Cover 0.050 100.7 0.08 0.00 0.08 0 1.70 68.306 949.45 79.32 485 1.33% 1.6 51% 0.63 0.00 0.63 0 1.00 0.09 1.03 1.0 0.059 58.16 137.48 0.224 3.78 0.97 0.51 0.74 1.83 1.0 0.023 1.00 79.32 0.126 30.71 17.24 2 3.53 594 1.6E-03 5.5E+02 1.1E-04 11 0.181 9517 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.804 5614.44 69.8 0.650 69.8 3.2 1.40 0.93%Interim Cover 0.050 100.7 0.09 0.00 0.09 0 1.70 118.609 1648.67 137.80 767 0.93% 1.3 51% 0.64 0.00 0.64 0 1.00 0.14 1.04 1.0 0.060 78.68 216.47 1.000 16.60 0.97 0.68 0.66 2.14 1.0 0.020 1.00 137.80 0.323 71.44 44.02 2 3.58 594 1.6E-03 5.5E+02 1.1E-04 11 0.181 9466 0.01%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.968 5614.27 139.8 1.194 139.8 6.7 2.90 0.85%Interim Cover 0.050 100.7 0.10 0.00 0.10 0 1.70 237.575 3302.29 276.01 1409 0.85% 1.2 51% 0.65 0.00 0.65 0 1.00 0.30 1.08 1.0 0.063 127.18 403.19 1.000 15.98 0.97 0.96 0.60 2.37 1.0 0.018 1.00 276.01 1.000 202.62 109.30 2 3.63 594 1.6E-03 5.5E+02 1.2E-04 11 0.182 9416 0.01%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.133 5614.11 222.3 2.152 222.2 6.7 2.90 0.97%Interim Cover 0.050 100.7 0.11 0.00 0.11 0 1.70 377.791 5251.29 438.86 2069 0.97% 1.2 51% 0.66 0.00 0.66 0 1.00 0.30 1.08 1.0 0.062 184.33 623.20 1.000 16.05 0.97 1.21 0.60 2.30 1.0 0.019 1.00 438.86 1.000 187.10 101.57 2 3.68 594 1.6E-03 5.5E+02 1.2E-04 11 0.182 9367 0.02%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.297 5613.94 246.8 3.608 246.8 4.8 2.07 1.46%Interim Cover 0.050 100.7 0.12 0.00 0.12 0 1.70 419.082 5825.24 486.80 2133 1.46% 1.4 51% 0.67 0.00 0.67 0 1.00 0.30 1.08 1.0 0.062 201.15 687.95 1.000 16.11 0.97 1.27 0.60 2.23 1.0 0.019 1.00 486.80 1.000 173.81 94.96 2 3.73 594 1.6E-03 5.5E+02 1.2E-04 11 0.183 9318 0.02%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.461 5613.78 219.5 4.267 219.4 6.7 2.90 1.94%Interim Cover 0.050 100.7 0.12 0.00 0.12 0 1.67 365.913 5086.19 425.07 1770 1.95% 1.5 51% 0.68 0.00 0.68 0 1.00 0.30 1.07 1.0 0.062 179.49 604.56 1.000 16.18 0.97 1.19 0.60 2.17 1.0 0.020 1.00 425.07 1.000 162.28 89.23 2 3.78 594 1.6E-03 5.5E+02 1.2E-04 11 0.184 9271 0.02%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.625 5613.62 178.9 4.079 179.0 -0.1 -0.03 2.28%Interim Cover 0.050 100.7 0.13 0.00 0.13 0 1.64 293.386 4078.06 340.75 1353 2.28% 1.6 51% 0.68 0.00 0.68 0 1.00 0.30 1.07 1.0 0.062 149.90 490.65 1.000 16.25 0.97 1.07 0.60 2.12 1.0 0.020 1.00 340.75 1.000 152.20 84.23 2 3.83 594 1.6E-03 5.5E+02 1.2E-04 11 0.184 9224 0.02%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.789 5613.45 149.3 2.666 149.3 0.3 0.12 1.79%Interim Cover 0.050 100.7 0.14 0.00 0.14 0 1.61 240.810 3347.26 279.69 1062 1.79% 1.5 51% 0.69 0.00 0.69 0 0.99 0.30 1.07 1.0 0.061 128.47 408.16 1.000 16.32 0.97 0.97 0.60 2.07 1.0 0.021 1.00 279.69 1.000 143.30 79.81 2 3.88 594 1.6E-03 5.5E+02 1.2E-04 11 0.185 9179 0.02%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.953 5613.29 132.8 2.041 132.8 -0.3 -0.15 1.54%Interim Cover 0.050 100.7 0.15 0.00 0.15 0 1.61 213.554 2968.40 248.03 892 1.54% 1.5 51% 0.70 0.00 0.70 0 0.99 0.30 1.06 1.0 0.061 117.36 365.39 1.000 16.39 0.97 0.91 0.60 2.02 1.0 0.021 1.00 248.03 1.000 135.40 75.89 2 3.93 594 1.6E-03 5.5E+02 1.2E-04 11 0.185 9133 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
3.117 5613.12 92.1 1.817 92.1 2.6 1.12 1.97%Interim Cover 0.050 100.7 0.16 0.00 0.16 0 1.70 156.604 2176.80 181.92 586 1.98% 1.7 51% 0.71 0.00 0.71 0 0.99 0.22 1.04 1.0 0.060 94.16 276.08 1.000 16.72 0.97 0.78 0.61 1.94 1.0 0.022 1.02 185.13 1.000 128.32 72.52 2 3.98 495 1.6E-03 3.8E+02 1.8E-04 11 0.186 9089 0.03%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
3.281 5612.96 80.8 1.379 80.8 2.1 0.89 1.71%Sand Tailings 0.051 102.8 0.17 0.00 0.17 0 1.70 137.326 1908.83 159.52 487 1.71% 1.7 18% 0.72 0.00 0.72 0 0.99 0.17 1.03 1.0 0.059 62.87 222.39 1.000 16.90 0.97 0.73 0.64 1.82 1.0 0.023 1.00 160.07 1.000 121.83 69.36 2 4.03 495 1.6E-03 3.9E+02 1.8E-04 0 0.191 11691 0.04%2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.03% 0.0000
3.445 5612.80 68.7 1.150 68.7 0.4 0.18 1.67%Sand-Slime Tailing 0.047 93.3 0.17 0.00 0.17 0 1.70 116.722 1622.44 135.57 396 1.68% 1.7 47% 0.73 0.00 0.73 0 0.99 0.14 1.02 1.0 0.059 77.85 213.42 1.000 17.04 0.97 0.67 0.66 1.71 1.0 0.025 1.03 139.61 0.333 38.80 27.92 2 4.08 495 1.4E-03 3.5E+02 2.0E-04 10 0.187 9244 0.04% 2.00 0.65 0.03% 0.004 0.34 0.079 0.765 0.59% 0.0010
3.609 5612.63 56.4 0.959 56.4 -0.5 -0.20 1.70%Sand-Slime Tailing 0.047 93.3 0.18 0.00 0.18 0 1.70 95.897 1332.97 111.37 311 1.71% 1.8 47% 0.73 0.00 0.73 0 0.99 0.12 1.02 1.0 0.058 69.36 180.73 0.548 9.39 0.97 0.61 0.70 1.61 1.0 0.027 1.07 119.35 0.238 26.57 17.98 2 4.13 495 1.4E-03 3.5E+02 2.0E-04 10 0.188 9204 0.04% 2.00 0.65 0.03% 0.004 0.34 0.079 0.765 0.62% 0.0010
3.773 5612.47 53.4 0.881 53.4 -0.6 -0.27 1.65%Sand-Slime Tailing 0.047 93.3 0.19 0.00 0.19 0 1.70 90.797 1262.08 105.45 283 1.66% 1.8 47% 0.74 0.00 0.74 0 0.99 0.11 1.02 1.0 0.058 67.28 172.73 0.437 7.51 0.97 0.59 0.70 1.57 1.0 0.027 1.08 113.95 0.218 23.31 15.41 2 4.18 495 1.4E-03 3.5E+02 2.0E-04 10 0.188 9165 0.04% 2.00 0.65 0.03% 0.004 0.34 0.079 0.765 0.66% 0.0011
3.937 5612.30 48.2 0.768 48.2 -0.6 -0.27 1.59%Sand-Slime Tailing 0.047 93.3 0.20 0.00 0.20 0 1.70 81.991 1139.67 95.22 245 1.60% 1.8 47% 0.75 0.00 0.75 0 0.99 0.10 1.01 1.0 0.058 63.70 158.92 0.319 5.50 0.97 0.56 0.72 1.52 1.0 0.028 1.10 104.52 0.186 19.17 12.34 2 4.23 495 1.4E-03 3.5E+02 2.1E-04 10 0.189 9126 0.04% 2.00 0.65 0.03% 0.005 0.34 0.079 0.765 0.70% 0.0011
4.101 5612.14 42.9 0.667 42.9 -0.7 -0.29 1.56%Sand-Slime Tailing 0.047 93.3 0.20 0.00 0.20 0 1.70 72.879 1013.02 84.64 209 1.56% 1.8 47% 0.76 0.00 0.76 0 0.99 0.09 1.01 1.0 0.058 59.98 144.62 0.249 4.31 0.97 0.53 0.73 1.47 1.0 0.029 1.12 95.05 0.160 15.85 10.08 2 4.28 495 1.4E-03 3.5E+02 2.1E-04 10 0.189 9087 0.04% 2.00 0.65 0.03% 0.005 0.34 0.079 0.765 0.73% 0.0012
4.265 5611.97 37.5 0.582 37.5 -0.0 -0.01 1.55%Sand-Slime Tailing 0.047 93.3 0.21 0.00 0.21 0 1.70 63.767 886.36 74.06 177 1.56% 1.9 47% 0.76 0.00 0.76 0 0.99 0.09 1.01 1.0 0.058 56.28 130.34 0.204 3.54 0.97 0.50 0.75 1.42 1.0 0.030 1.16 85.99 0.139 13.30 8.42 2 4.33 495 1.4E-03 3.5E+02 2.1E-04 10 0.190 9050 0.04% 2.00 0.65 0.03% 0.005 0.34 0.079 0.765 0.77% 0.0013
4.429 5611.81 34.9 0.521 35.0 -0.6 -0.25 1.49%Sand-Slime Tailing 0.047 93.3 0.22 0.00 0.22 0 1.70 59.415 825.87 69.00 159 1.50% 1.9 47% 0.77 0.00 0.77 0 0.99 0.08 1.01 1.0 0.058 54.50 123.50 0.187 3.26 0.97 0.48 0.76 1.39 1.0 0.031 1.18 81.21 0.130 11.98 7.62 2 4.38 495 1.4E-03 3.5E+02 2.1E-04 10 0.190 9012 0.04% 2.00 0.65 0.03% 0.005 0.34 0.079 0.765 0.80% 0.0013
4.593 5611.65 33.0 0.469 33.0 -0.6 -0.26 1.42%Sand-Slime Tailing 0.047 93.3 0.23 0.00 0.23 0 1.70 56.049 779.08 65.09 144 1.43% 1.9 47% 0.78 0.00 0.78 0 0.98 0.08 1.01 1.0 0.057 53.13 118.22 0.176 3.06 0.97 0.47 0.77 1.36 1.0 0.031 1.19 77.39 0.123 10.98 7.02 2 4.43 495 1.4E-03 3.5E+02 2.1E-04 10 0.191 8975 0.04% 2.00 0.65 0.03% 0.005 0.34 0.079 0.765 0.83% 0.0014
4.757 5611.48 30.9 0.492 30.9 -0.7 -0.32 1.59%Sand-Slime Tailing 0.047 93.3 0.23 0.00 0.23 0 1.70 52.462 729.22 60.92 131 1.61% 2.0 47% 0.79 0.00 0.79 0 0.98 0.08 1.01 1.0 0.057 51.67 112.59 0.165 2.87 0.97 0.45 0.77 1.34 1.0 0.032 1.26 76.65 0.122 10.52 6.70 2 4.48 495 1.4E-03 3.5E+02 2.2E-04 10 0.191 8939 0.04% 2.00 0.65 0.03% 0.006 0.34 0.079 0.765 0.87% 0.0014
4.921 5611.32 29.7 0.432 29.7 -1.3 -0.55 1.45%Sand-Slime Tailing 0.047 93.3 0.24 0.00 0.24 0 1.70 50.490 701.81 58.63 122 1.47% 2.0 47% 0.79 0.00 0.79 0 0.98 0.08 1.01 1.0 0.057 50.86 109.49 0.159 2.78 0.97 0.44 0.78 1.32 1.0 0.032 1.25 73.30 0.117 9.75 6.27 2 4.53 495 1.4E-03 3.5E+02 2.2E-04 10 0.192 8903 0.04% 2.00 0.65 0.03% 0.006 0.34 0.079 0.765 0.90% 0.0015
5.085 5611.15 26.8 0.410 26.8 -1.5 -0.67 1.53%Sand-Slime Tailing 0.059 119.0 0.25 0.00 0.25 1 1.70 45.594 633.76 52.94 106 1.54% 2.0 47% 0.80 0.00 0.80 0 0.98 0.07 1.00 1.0 0.057 48.87 101.80 0.146 2.55 0.96 0.42 0.79 1.30 1.0 0.033 1.32 70.05 0.112 9.05 5.80 2 4.58 495 1.8E-03 4.5E+02 1.7E-04 10 0.192 8858 0.03% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
5.249 5610.99 24.8 0.386 24.8 -0.4 -0.16 1.56%Sand-Slime Tailing 0.059 119.0 0.26 0.01 0.25 1 1.70 42.143 585.79 48.94 96 1.57% 2.1 47% 0.81 0.00 0.81 0 0.98 0.07 1.00 1.0 0.057 47.47 96.41 0.137 2.40 0.96 0.40 0.80 1.28 1.0 0.033 1.38 67.39 0.108 8.62 5.51 2 4.63 495 1.8E-03 4.5E+02 1.8E-04 10 0.193 8814 0.03% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
5.413 5610.83 26.0 0.371 26.0 -0.4 -0.17 1.43%Sand-Slime Tailing 0.059 119.0 0.27 0.01 0.26 1 1.70 44.200 614.38 51.33 99 1.44% 2.0 47% 0.82 0.00 0.82 0 0.98 0.07 1.00 1.0 0.057 48.30 99.63 0.142 2.50 0.96 0.41 0.79 1.28 1.0 0.033 1.32 68.00 0.109 8.53 5.51 2 4.68 495 1.8E-03 4.5E+02 1.8E-04 10 0.193 8771 0.03% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
5.577 5610.66 24.7 0.321 24.7 -0.3 -0.13 1.30%Sand-Slime Tailing 0.059 119.0 0.28 0.02 0.26 1 1.70 41.922 582.72 48.69 92 1.32% 2.0 47% 0.83 0.00 0.83 0 0.98 0.07 1.00 1.0 0.057 47.38 96.06 0.136 2.40 0.96 0.40 0.80 1.27 1.0 0.033 1.32 64.25 0.105 8.03 5.21 2 4.73 495 1.8E-03 4.5E+02 1.8E-04 10 0.194 8728 0.03% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
5.741 5610.50 27.7 0.310 27.7 -0.3 -0.13 1.12%Sand-Slime Tailing 0.059 119.0 0.29 0.02 0.27 1 1.70 47.022 653.61 54.61 102 1.13% 1.9 47% 0.84 0.00 0.84 0 0.98 0.07 1.00 1.0 0.057 49.45 104.06 0.149 2.64 0.96 0.43 0.79 1.28 1.0 0.033 1.23 67.08 0.108 8.15 5.39 2 4.78 495 1.8E-03 4.5E+02 1.8E-04 10 0.195 8686 0.03% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
5.905 5610.33 28.1 0.321 28.1 -0.4 -0.16 1.14%Sand-Slime Tailing 0.059 119.0 0.30 0.03 0.27 1 1.70 47.770 664.00 55.48 102 1.15% 1.9 47% 0.85 0.00 0.85 0 0.98 0.07 1.00 1.0 0.057 49.76 105.24 0.151 2.68 0.96 0.43 0.78 1.28 1.0 0.033 1.23 68.51 0.110 8.15 5.41 2 4.83 495 1.8E-03 4.5E+02 1.8E-04 10 0.195 8645 0.03% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.02% 0.0000
6.069 5610.17 23.8 0.368 23.8 -0.4 -0.17 1.54%Sand-Slime Tailing 0.059 119.0 0.31 0.03 0.28 1 1.70 40.511 563.10 47.05 85 1.56% 2.1 47% 0.86 0.00 0.86 0 0.98 0.07 1.00 1.0 0.056 46.80 93.85 0.133 2.35 0.96 0.40 0.80 1.25 1.0 0.034 1.44 67.86 0.109 7.96 5.15 2 4.88 495 1.8E-03 4.5E+02 1.9E-04 10 0.196 8604 0.03% 2.00 0.65 0.03% 0.001 0.34 0.079 0.765 0.12% 0.0002
6.234 5610.01 18.4 0.319 18.4 -0.5 -0.20 1.73%Sand-Slime Tailing 0.059 119.0 0.32 0.04 0.28 1 1.70 31.297 435.03 36.34 64 1.76% 2.2 47% 0.87 0.00 0.87 0 0.98 0.06 1.00 1.0 0.056 43.05 79.39 0.112 1.98 0.96 0.35 0.80 1.25 1.0 0.034 1.71 62.22 0.102 7.35 4.67 2 4.93 495 1.8E-03 4.5E+02 1.9E-04 10 0.196 8564 0.03% 2.00 0.65 0.03% 0.001 0.34 0.079 0.765 0.18% 0.0003
6.398 5609.84 20.4 0.332 20.5 -0.3 -0.14 1.62%Sand-Slime Tailing 0.059 119.0 0.33 0.04 0.29 1 1.70 34.765 483.23 40.37 70 1.65% 2.2 47% 0.88 0.00 0.88 0 0.97 0.07 1.00 1.0 0.056 44.46 84.83 0.119 2.12 0.96 0.37 0.80 1.25 1.0 0.034 1.60 64.41 0.105 7.41 4.77 2 4.98 495 1.8E-03 4.5E+02 1.9E-04 10 0.197 8524 0.03% 2.00 0.65 0.03% 0.002 0.34 0.079 0.765 0.24% 0.0004
6.562 5609.68 17.3 0.407 17.3 -0.4 -0.16 2.35%Sand-Slime Tailing 0.059 119.0 0.34 0.05 0.29 1 1.70 29.461 409.51 34.21 58 2.40% 2.3 47% 0.89 0.00 0.89 0 0.97 0.06 1.00 1.0 0.056 42.30 76.51 0.108 1.92 0.96 0.34 0.80 1.24 1.0 0.034 2.08 71.05 0.113 7.88 4.90 2 5.03 495 1.8E-03 4.5E+02 1.9E-04 10 0.197 8486 0.03% 2.00 0.65 0.03% 0.002 0.34 0.079 0.765 0.29% 0.0005
6.726 5609.51 11.3 0.330 11.4 -0.5 -0.20 2.91%Slime Tailings 0.057 113.1 0.35 0.05 0.30 1 1.70 19.295 268.20 22.40 37 3.00% 2.5 71% 0.90 0.00 0.90 0 0.97 0.05 1.00 1.0 0.056 37.89 60.29 0.088 1.57 0.96 0.27 0.80 1.24 1.0 0.034 3.02 67.71 0.109 7.47 4.52 2 5.08 495 1.8E-03 4.3E+02 2.0E-04 16 0.450 6952 0.04% 2.00 0.65 0.03% 0.005 0.34 0.079 0.765 0.78% 0.0013
6.890 5609.35 13.4 0.217 13.4 1.7 0.72 1.62%Sand-Slime Tailing 0.059 119.0 0.36 0.06 0.30 1 1.70 22.763 316.41 26.46 43 1.66% 2.3 47% 0.91 0.00 0.91 0 0.97 0.06 1.00 1.0 0.056 39.58 66.04 0.095 1.69 0.96 0.30 0.80 1.23 1.0 0.034 2.05 54.36 0.095 6.42 4.05 2 5.13 495 1.8E-03 4.5E+02 2.0E-04 10 0.198 8412 0.03% 2.00 0.65 0.03% 0.002 0.34 0.079 0.765 0.37% 0.0006
7.054 5609.19 20.5 0.195 20.5 1.9 0.83 0.95%Sand-Slime Tailing 0.059 119.0 0.37 0.06 0.31 1 1.70 34.782 483.47 40.42 66 0.97% 2.0 47% 0.92 0.00 0.92 0 0.97 0.07 1.00 1.0 0.056 44.48 84.90 0.119 2.14 0.96 0.37 0.80 1.23 1.0 0.034 1.36 55.14 0.096 6.36 4.25 2 5.18 495 1.8E-03 4.5E+02 2.0E-04 10 0.199 8375 0.03% 2.00 0.65 0.03% 0.003 0.34 0.079 0.765 0.41% 0.0007
7.218 5609.02 20.5 0.217 20.5 0.3 0.14 1.06%Sand-Slime Tailing 0.059 119.0 0.38 0.07 0.31 1 1.70 34.782 483.47 40.40 65 1.08% 2.1 47% 0.93 0.00 0.93 0 0.97 0.07 0.99 1.0 0.056 44.47 84.87 0.119 2.14 0.96 0.37 0.80 1.23 1.0 0.035 1.42 57.29 0.097 6.40 4.27 2 5.23 495 1.8E-03 4.5E+02 2.0E-04 10 0.200 8338 0.03% 2.00 0.65 0.03% 0.003 0.34 0.079 0.765 0.45% 0.0007
7.382 5608.86 18.7 0.284 18.7 -0.3 -0.14 1.52%Sand-Slime Tailing 0.059 119.0 0.39 0.07 0.31 1 1.70 31.756 441.41 36.88 58 1.55% 2.2 47% 0.94 0.00 0.94 0 0.97 0.06 0.99 1.0 0.056 43.24 80.11 0.113 2.03 0.96 0.35 0.80 1.22 1.0 0.035 1.70 62.74 0.103 6.66 4.34 2 5.28 495 1.8E-03 4.5E+02 2.0E-04 10 0.200 8302 0.04% 2.00 0.65 0.03% 0.003 0.34 0.079 0.765 0.49% 0.0008
7.546 5608.69 13.6 0.275 13.6 -0.3 -0.14 2.03%Sand-Slime Tailing 0.059 119.0 0.40 0.08 0.32 1 1.70 23.086 320.90 26.81 41 2.09% 2.4 47% 0.95 0.00 0.95 0 0.97 0.06 0.99 1.0 0.056 39.70 66.51 0.095 1.72 0.96 0.30 0.80 1.22 1.0 0.035 2.35 63.11 0.103 6.59 4.15 2 5.33 495 1.8E-03 4.5E+02 2.0E-04 10 0.201 8266 0.04% 2.00 0.65 0.03% 0.003 0.34 0.079 0.765 0.53% 0.0009
7.710 5608.53 17.2 0.252 17.2 0.6 0.24 1.46%Sand-Slime Tailing 0.059 119.0 0.41 0.08 0.32 1 1.70 29.257 406.67 33.99 52 1.50% 2.2 47% 0.96 0.00 0.96 0 0.97 0.06 0.99 1.0 0.055 42.22 76.21 0.108 1.94 0.96 0.34 0.80 1.22 1.0 0.035 1.78 60.41 0.101 6.32 4.13 2 5.38 495 1.8E-03 4.5E+02 2.1E-04 10 0.201 8232 0.04% 2.00 0.65 0.03% 0.004 0.34 0.079 0.765 0.56% 0.0009
7.874 5608.37 19.5 0.259 19.5 0.3 0.14 1.33%Sand-Slime Tailing 0.059 119.0 0.42 0.09 0.33 1 1.70 33.184 461.26 38.55 58 1.36% 2.2 47% 0.97 0.00 0.97 0 0.96 0.06 0.99 1.0 0.055 43.82 82.37 0.116 2.09 0.96 0.36 0.80 1.21 1.0 0.035 1.61 62.11 0.102 6.34 4.22 2 5.43 495 1.8E-03 4.5E+02 2.1E-04 10 0.202 8197 0.04% 2.00 0.65 0.03% 0.004 0.34 0.079 0.765 0.60% 0.0010
8.038 5608.20 17.5 0.270 17.5 -0.4 -0.19 1.54%Sand-Slime Tailing 0.059 119.0 0.43 0.09 0.33 1 1.70 29.716 413.05 34.51 51 1.58% 2.3 47% 0.98 0.00 0.98 0 0.96 0.06 0.99 1.0 0.055 42.40 76.91 0.108 1.96 0.96 0.34 0.80 1.21 1.0 0.035 1.83 63.24 0.104 6.33 4.15 2 5.48 495 1.8E-03 4.5E+02 2.1E-04 10 0.202 8163 0.04% 2.00 0.65 0.03% 0.004 0.34 0.079 0.765 0.63% 0.0010
8.202 5608.04 20.8 0.275 20.8 -0.3 -0.15 1.32%Sand-Slime Tailing 0.059 119.0 0.44 0.10 0.34 1 1.70 35.343 491.27 41.04 60 1.35% 2.2 47% 0.99 0.00 0.99 0 0.96 0.07 0.99 1.0 0.055 44.70 85.74 0.121 2.19 0.96 0.37 0.80 1.21 1.0 0.035 1.58 64.94 0.105 6.36 4.28 2 5.53 495 1.8E-03 4.5E+02 2.1E-04 10 0.203 8130 0.04% 2.00 0.65 0.03% 0.004 0.34 0.079 0.765 0.66% 0.0011
8.366 5607.87 29.7 0.344 29.7 -0.3 -0.13 1.16%Sand-Slime Tailing 0.059 119.0 0.45 0.10 0.34 1 1.70 50.524 702.28 58.68 85 1.18% 2.0 47% 1.00 0.00 1.00 0 0.96 0.08 0.99 1.0 0.055 50.88 109.56 0.159 2.89 0.96 0.44 0.78 1.23 1.0 0.034 1.31 76.88 0.122 7.28 5.09 2 5.58 495 1.8E-03 4.5E+02 2.2E-04 10 0.203 8097 0.04% 2.00 0.65 0.03% 0.005 0.34 0.079 0.765 0.70% 0.0011
8.530 5607.71 27.7 0.473 27.7 -0.4 -0.17 1.71%Sand-Slime Tailing 0.059 119.0 0.46 0.11 0.35 1 1.70 47.056 654.08 54.65 78 1.74% 2.1 47% 1.01 0.00 1.01 0 0.96 0.07 0.99 1.0 0.055 49.47 104.12 0.149 2.72 0.96 0.43 0.79 1.21 1.0 0.035 1.55 84.64 0.136 8.02 5.37 2 5.63 495 1.8E-03 4.5E+02 2.2E-04 10 0.204 8064 0.04% 2.00 0.65 0.03% 0.005 0.34 0.079 0.765 0.73% 0.0012
8.694 5607.55 17.5 0.350 17.5 -0.4 -0.18 2.00%Sand-Slime Tailing 0.059 119.0 0.47 0.11 0.35 1 1.70 29.733 413.29 34.53 48 2.06% 2.4 47% 1.02 0.00 1.02 0 0.96 0.06 0.99 1.0 0.055 42.41 76.94 0.109 1.98 0.96 0.34 0.80 1.20 1.0 0.035 2.13 73.60 0.117 6.79 4.38 2 5.68 495 1.8E-03 4.5E+02 2.2E-04 10 0.204 8032 0.04% 2.00 0.65 0.03% 0.005 0.34 0.079 0.765 0.76% 0.0012
8.858 5607.38 14.1 0.266 14.1 0.3 0.13 1.88%Sand-Slime Tailing 0.059 119.0 0.48 0.12 0.36 1 1.70 23.987 333.42 27.86 38 1.95% 2.4 47% 1.03 0.00 1.03 0 0.96 0.06 0.99 1.0 0.055 40.07 67.94 0.097 1.77 0.96 0.30 0.80 1.19 1.0 0.035 2.38 66.42 0.107 6.14 3.96 2 5.73 495 1.8E-03 4.5E+02 2.2E-04 10 0.205 8000 0.04% 2.00 0.65 0.03% 0.005 0.34 0.079 0.765 0.79% 0.0013
9.022 5607.22 12.6 0.246 12.4 27.0 11.71 1.96%Sand-Slime Tailing 0.059 119.0 0.49 0.12 0.36 1 1.70 21.080 293.01 24.82 33 2.04% 2.5 47% 1.04 0.00 1.04 0 0.96 0.06 0.99 1.0 0.055 39.01 63.82 0.092 1.68 0.96 0.29 0.80 1.19 1.0 0.035 2.64 65.56 0.106 6.01 3.85 2 5.78 495 1.8E-03 4.5E+02 2.2E-04 10 0.205 7969 0.04% 2.00 0.65 0.03% 0.005 0.34 0.079 0.765 0.82% 0.0014
9.186 5607.05 14.1 0.209 14.0 21.8 9.43 1.48%Sand-Slime Tailing 0.059 119.0 0.50 0.13 0.37 1 1.70 23.783 330.58 27.89 37 1.53% 2.4 47% 1.05 0.00 1.05 0 0.96 0.06 0.99 1.0 0.055 40.08 67.97 0.097 1.78 0.96 0.30 0.80 1.19 1.0 0.035 2.17 60.39 0.100 5.62 3.70 2 5.83 495 1.8E-03 4.5E+02 2.3E-04 10 0.206 7938 0.04% 2.00 0.65 0.03% 0.006 0.34 0.079 0.765 0.85% 0.0014
9.350 5606.89 11.2 0.245 11.2 5.5 2.40 2.18%Slime Tailings 0.057 113.1 0.50 0.13 0.37 1 1.70 19.023 264.42 22.16 29 2.29% 2.6 71% 1.06 0.00 1.06 0 0.96 0.05 0.99 1.0 0.055 37.81 59.97 0.088 1.61 0.95 0.27 0.80 1.18 1.0 0.036 3.06 67.79 0.109 6.02 3.82 2 5.88 460 1.8E-03 3.7E+02 2.8E-04 16 0.458 6510 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.95% 0.0032
9.514 5606.73 8.4 0.166 8.3 7.5 3.23 1.98%Slime Tailings 0.057 113.1 0.51 0.14 0.37 1 1.70 14.144 196.60 16.52 21 2.11% 2.6 71% 1.07 0.00 1.07 0 0.95 0.05 0.99 1.0 0.055 35.84 52.36 0.080 1.46 0.95 0.23 0.80 1.18 1.0 0.036 3.62 59.80 0.100 5.46 3.46 2 5.93 460 1.8E-03 3.7E+02 2.8E-04 16 0.458 6487 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.98% 0.0033
9.678 5606.56 9.2 0.101 9.1 11.5 4.97 1.10%Sand-Slime Tailing 0.059 119.0 0.52 0.14 0.38 1 1.70 15.470 215.03 18.11 23 1.17% 2.5 47% 1.08 0.00 1.08 0 0.95 0.05 0.99 1.0 0.054 36.65 54.76 0.082 1.51 0.95 0.25 0.80 1.18 1.0 0.036 2.64 47.72 0.090 4.85 3.18 2 5.98 460 1.8E-03 3.9E+02 2.7E-04 10 0.207 7851 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.57% 0.0026
9.842 5606.40 8.9 0.136 8.8 15.6 6.76 1.53%Sand-Slime Tailing 0.059 119.0 0.53 0.15 0.38 1 1.70 14.926 207.47 17.53 22 1.63% 2.6 47% 1.09 0.00 1.09 0 0.95 0.05 0.99 1.0 0.054 36.45 53.98 0.081 1.50 0.95 0.24 0.80 1.18 1.0 0.036 3.14 55.03 0.095 5.10 3.30 2 6.03 460 1.8E-03 3.9E+02 2.7E-04 10 0.208 7821 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.61% 0.0026
10.006 5606.23 7.4 0.138 7.3 21.3 9.25 1.87%Slime Tailings 0.057 113.1 0.54 0.15 0.39 1 1.70 12.325 171.32 14.58 18 2.02% 2.7 71% 1.09 0.00 1.09 0 0.95 0.05 0.99 1.0 0.054 35.16 49.74 0.077 1.42 0.95 0.22 0.80 1.17 1.0 0.036 3.97 57.82 0.098 5.18 3.30 2 6.08 460 1.8E-03 3.7E+02 2.9E-04 16 0.460 6416 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.09% 0.0034
10.170 5606.07 10.2 0.164 10.2 -1.3 -0.56 1.60%Sand-Slime Tailing 0.059 119.0 0.55 0.16 0.39 1 1.70 17.408 241.97 20.20 25 1.69% 2.5 47% 1.10 0.00 1.10 0 0.95 0.05 0.99 1.0 0.054 37.39 57.59 0.085 1.57 0.95 0.26 0.80 1.17 1.0 0.036 2.94 59.41 0.100 5.20 3.39 2 6.13 460 1.8E-03 3.9E+02 2.8E-04 10 0.208 7765 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.67% 0.0027
10.335 5605.91 11.2 0.177 11.1 9.8 4.26 1.58%Sand-Slime Tailing 0.059 119.0 0.56 0.17 0.40 1 1.70 18.921 263.00 22.10 27 1.67% 2.5 47% 1.11 0.00 1.11 0 0.95 0.05 0.99 1.0 0.054 38.05 60.15 0.088 1.63 0.95 0.27 0.80 1.17 1.0 0.036 2.77 61.13 0.101 5.23 3.43 2 6.18 460 1.8E-03 3.9E+02 2.8E-04 10 0.209 7737 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.71% 0.0028
10.499 5605.74 10.6 0.158 10.5 14.1 6.11 1.49%Sand-Slime Tailing 0.059 119.0 0.57 0.17 0.40 1 1.70 17.833 247.88 20.89 25 1.58% 2.5 47% 1.12 0.00 1.12 0 0.95 0.05 0.99 1.0 0.054 37.63 58.51 0.086 1.60 0.95 0.26 0.80 1.16 1.0 0.036 2.83 59.12 0.099 5.07 3.33 2 6.23 460 1.8E-03 3.9E+02 2.8E-04 10 0.209 7709 0.07% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.74% 0.0029
10.663 5605.58 11.5 0.125 11.4 10.9 4.70 1.09%Sand-Slime Tailing 0.059 119.0 0.58 0.18 0.41 1 1.70 19.380 269.38 22.64 27 1.15% 2.4 47% 1.13 0.00 1.13 0 0.95 0.05 0.99 1.0 0.054 38.24 60.89 0.089 1.65 0.95 0.27 0.80 1.16 1.0 0.036 2.35 53.28 0.094 4.75 3.20 2 6.28 460 1.8E-03 3.9E+02 2.8E-04 10 0.210 7681 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.78% 0.0029
10.827 5605.41 11.2 0.137 11.1 7.2 3.12 1.22%Sand-Slime Tailing 0.059 119.0 0.59 0.18 0.41 1 1.70 18.938 263.24 22.08 26 1.29% 2.5 47% 1.14 0.00 1.14 0 0.95 0.05 0.98 1.0 0.054 38.05 60.13 0.088 1.64 0.95 0.27 0.80 1.16 1.0 0.036 2.54 56.01 0.096 4.81 3.22 2 6.33 460 1.8E-03 3.9E+02 2.9E-04 10 0.210 7654 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.82% 0.0030
10.991 5605.25 11.3 0.125 11.2 15.6 6.77 1.11%Sand-Slime Tailing 0.059 119.0 0.60 0.19 0.42 1 1.70 19.057 264.89 22.33 26 1.17% 2.4 47% 1.15 0.00 1.15 0 0.94 0.05 0.98 1.0 0.054 38.13 60.46 0.088 1.64 0.95 0.27 0.80 1.16 1.0 0.036 2.43 54.27 0.095 4.69 3.17 2 6.38 460 1.8E-03 3.9E+02 2.9E-04 10 0.211 7627 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.85% 0.0030
11.155 5605.09 12.7 0.188 12.6 14.5 6.28 1.48%Sand-Slime Tailing 0.059 119.0 0.61 0.19 0.42 1 1.70 21.437 297.97 25.08 29 1.56% 2.5 47% 1.16 0.00 1.16 0 0.94 0.06 0.98 1.0 0.054 39.10 64.17 0.093 1.73 0.95 0.29 0.80 1.15 1.0 0.036 2.56 64.20 0.105 5.12 3.42 2 6.43 460 1.8E-03 3.9E+02 2.9E-04 10 0.211 7601 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.89% 0.0031
11.319 5604.92 10.6 0.193 10.5 12.0 5.18 1.82%Sand-Slime Tailing 0.059 119.0 0.62 0.20 0.42 1 1.70 17.867 248.35 20.90 23 1.94% 2.6 47% 1.17 0.00 1.17 0 0.94 0.05 0.98 1.0 0.054 37.63 58.53 0.086 1.61 0.95 0.26 0.80 1.15 1.0 0.036 3.23 67.57 0.109 5.26 3.43 2 6.48 460 1.8E-03 3.9E+02 2.9E-04 10 0.212 7574 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.92% 0.0032
11.483 5604.76 10.1 0.128 10.0 15.4 6.66 1.27%Sand-Slime Tailing 0.059 119.0 0.63 0.20 0.43 1 1.70 17.000 236.30 19.93 22 1.35% 2.5 47% 1.18 0.00 1.18 0 0.94 0.05 0.98 1.0 0.053 37.29 57.23 0.085 1.59 0.95 0.26 0.80 1.15 1.0 0.036 2.87 57.19 0.097 4.66 3.12 2 6.53 460 1.8E-03 3.9E+02 2.9E-04 10 0.212 7548 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.96% 0.0032
11.647 5604.59 9.6 0.155 9.5 10.4 4.52 1.62%Sand-Slime Tailing 0.059 119.0 0.64 0.21 0.43 1 1.70 16.150 224.49 18.89 21 1.74% 2.6 47% 1.19 0.00 1.19 0 0.94 0.05 0.98 1.0 0.053 36.93 55.81 0.083 1.56 0.95 0.25 0.80 1.15 1.0 0.037 3.35 63.33 0.104 4.91 3.24 2 6.58 460 1.8E-03 3.9E+02 3.0E-04 10 0.213 7523 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.99% 0.0033
11.811 5604.43 7.6 0.132 7.4 26.7 11.58 1.74%Slime Tailings 0.057 113.1 0.65 0.21 0.44 1 1.70 12.549 174.44 14.90 16 1.91% 2.7 71% 1.20 0.00 1.20 0 0.94 0.05 0.98 1.0 0.053 35.28 50.18 0.078 1.46 0.95 0.22 0.80 1.14 1.0 0.037 4.16 62.05 0.102 4.80 3.13 2 6.63 460 1.8E-03 3.7E+02 3.2E-04 16 0.464 6175 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.50% 0.0041
11.975 5604.27 7.8 0.081 7.7 21.2 9.18 1.04%Sand-Slime Tailing 0.059 119.0 0.66 0.22 0.44 1 1.68 12.884 179.08 15.22 16 1.14% 2.6 47% 1.21 0.00 1.21 0 0.94 0.05 0.98 1.0 0.053 35.64 50.86 0.078 1.47 0.95 0.23 0.80 1.14 1.0 0.037 3.31 50.40 0.092 4.27 2.87 2 6.68 460 1.8E-03 3.9E+02 3.0E-04 10 0.213 7473 0.08% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 2.06% 0.0034
12.139 5604.10 8.6 0.080 8.5 21.2 9.20 0.93%Sand-Slime Tailing 0.059 119.0 0.67 0.22 0.45 1 1.67 14.147 196.65 16.69 18 1.01% 2.5 47% 1.22 0.00 1.22 0 0.94 0.05 0.98 1.0 0.053 36.15 52.84 0.080 1.51 0.95 0.24 0.80 1.14 1.0 0.037 2.95 49.28 0.091 4.19 2.85 2 6.73 460 1.8E-03 3.9E+02 3.0E-04 10 0.214 7449 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.10% 0.0034
12.303 5603.94 7.4 0.144 7.2 28.9 12.53 1.95%Slime Tailings 0.057 113.1 0.68 0.23 0.45 1 1.66 11.958 166.22 14.24 15 2.14% 2.8 71% 1.23 0.00 1.23 0 0.94 0.05 0.98 1.0 0.053 35.05 49.28 0.077 1.45 0.95 0.22 0.80 1.14 1.0 0.037 4.55 64.75 0.105 4.80 3.12 2 6.78 460 1.8E-03 3.7E+02 3.2E-04 16 0.466 6115 0.10% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.61% 0.0043
12.467 5603.77 6.6 0.098 6.4 31.0 13.42 1.49%Slime Tailings 0.057 113.1 0.69 0.23 0.46 1 1.64 10.508 146.06 12.57 13 1.66% 2.8 71% 1.24 0.00 1.24 0 0.93 0.05 0.98 1.0 0.053 34.47 47.04 0.075 1.41 0.95 0.20 0.80 1.14 1.0 0.037 4.48 56.35 0.097 4.37 2.89 2 6.83 460 1.8E-03 3.7E+02 3.3E-04 16 0.466 6096 0.10% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.65% 0.0043
12.631 5603.61 10.5 0.114 10.4 20.4 8.82 1.08%Sand-Slime Tailing 0.059 119.0 0.70 0.24 0.46 1 1.63 16.984 236.07 19.97 21 1.16% 2.5 47% 1.25 0.00 1.25 0 0.93 0.05 0.98 1.0 0.053 37.30 57.27 0.085 1.61 0.95 0.26 0.80 1.13 1.0 0.037 2.75 54.84 0.095 4.27 2.94 2 6.88 460 1.8E-03 3.9E+02 3.1E-04 10 0.215 7378 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.20% 0.0036
12.795 5603.44 13.7 0.097 13.6 15.2 6.59 0.71%Sand-Slime Tailing 0.059 119.0 0.71 0.24 0.46 1 1.59 21.666 301.16 25.34 28 0.75% 2.3 47% 1.26 0.00 1.26 0 0.93 0.06 0.98 1.0 0.053 39.19 64.53 0.093 1.76 0.95 0.29 0.80 1.13 1.0 0.037 1.95 49.33 0.091 4.04 2.90 2 6.93 460 1.8E-03 3.9E+02 3.1E-04 10 0.215 7354 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.24% 0.0037
12.959 5603.28 16.5 0.105 16.4 9.8 4.23 0.64%Sand-Slime Tailing 0.059 119.0 0.72 0.25 0.47 1 1.55 25.544 355.07 29.78 34 0.67% 2.2 47% 1.27 0.00 1.27 0 0.93 0.06 0.98 1.0 0.053 40.75 70.52 0.100 1.91 0.95 0.32 0.80 1.13 1.0 0.037 1.68 50.08 0.092 4.03 2.97 2 6.98 460 1.8E-03 3.9E+02 3.2E-04 10 0.216 7331 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.28% 0.0037
13.123 5603.12 21.7 0.122 21.7 9.2 4.00 0.56%Sand-Slime Tailing 0.059 119.0 0.73 0.25 0.47 1 1.51 32.623 453.45 37.99 44 0.58% 2.1 47% 1.28 0.00 1.28 0 0.93 0.06 0.97 1.0 0.052 43.63 81.62 0.115 2.19 0.95 0.36 0.80 1.13 1.0 0.037 1.41 53.48 0.094 4.10 3.15 2 7.03 460 1.8E-03 3.9E+02 3.2E-04 10 0.216 7308 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.31% 0.0038
13.287 5602.95 18.8 0.157 18.7 5.8 2.52 0.84%Sand-Slime Tailing 0.059 119.0 0.74 0.26 0.48 1 1.52 28.407 394.86 33.06 38 0.87% 2.2 47% 1.29 0.00 1.29 0 0.93 0.06 0.98 1.0 0.052 41.90 74.95 0.106 2.02 0.95 0.33 0.80 1.12 1.0 0.037 1.72 56.89 0.097 4.19 3.11 2 7.08 460 1.8E-03 3.9E+02 3.2E-04 10 0.217 7285 0.09% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.35% 0.0039
13.451 5602.79 19.3 0.227 19.2 9.2 4.00 1.18%Sand-Slime Tailing 0.059 119.0 0.75 0.26 0.48 1 1.50 28.942 402.30 33.72 38 1.22% 2.3 47% 1.30 0.00 1.30 0 0.93 0.06 0.97 1.0 0.052 42.13 75.84 0.107 2.05 0.95 0.34 0.80 1.12 1.0 0.037 1.93 65.17 0.106 4.52 3.28 2 7.13 460 1.8E-03 3.9E+02 3.2E-04 10 0.217 7262 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.39% 0.0039
13.615 5602.62 15.8 0.262 15.7 7.7 3.33 1.66%Sand-Slime Tailing 0.059 119.0 0.76 0.27 0.49 1 1.52 23.933 332.67 27.88 31 1.74% 2.5 47% 1.31 0.00 1.31 0 0.93 0.06 0.98 1.0 0.052 40.08 67.96 0.097 1.86 0.95 0.30 0.80 1.12 1.0 0.037 2.58 72.05 0.115 4.86 3.36 2 7.18 460 1.8E-03 3.9E+02 3.3E-04 10 0.218 7239 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.43% 0.0040
13.779 5602.46 12.7 0.218 12.6 16.1 6.99 1.72%Sand-Slime Tailing 0.059 119.0 0.77 0.27 0.49 1 1.54 19.381 269.39 22.69 24 1.83% 2.6 47% 1.32 0.00 1.32 0 0.92 0.05 0.98 1.0 0.052 38.26 60.95 0.089 1.70 0.94 0.28 0.80 1.12 1.0 0.037 3.08 69.87 0.112 4.69 3.19 2 7.23 460 1.8E-03 3.9E+02 3.3E-04 10 0.218 7217 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.46% 0.0040
13.943 5602.30 10.1 0.175 9.9 22.6 9.81 1.74%Sand-Slime Tailing 0.059 119.0 0.78 0.28 0.50 1 1.54 15.263 212.15 17.98 19 1.88% 2.7 47% 1.33 0.00 1.33 0 0.92 0.05 0.98 1.0 0.052 36.61 54.59 0.082 1.57 0.94 0.24 0.80 1.12 1.0 0.037 3.70 66.52 0.107 4.46 3.02 2 7.28 460 1.8E-03 3.9E+02 3.3E-04 10 0.218 7195 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.50% 0.0041
14.107 5602.13 9.1 0.134 8.8 44.4 19.24 1.48%Sand-Slime Tailing 0.059 119.0 0.79 0.28 0.50 1 1.52 13.415 186.46 16.07 17 1.62% 2.7 47% 1.34 0.00 1.34 0 0.92 0.05 0.98 1.0 0.052 35.94 52.01 0.079 1.52 0.94 0.23 0.80 1.11 1.0 0.037 3.76 60.46 0.101 4.14 2.83 2 7.33 460 1.8E-03 3.9E+02 3.3E-04 10 0.219 7173 0.09% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.54% 0.0042
14.271 5601.97 13.3 0.135 13.2 23.4 10.14 1.01%Sand-Slime Tailing 0.059 119.0 0.79 0.29 0.51 1 1.50 19.817 275.45 23.27 25 1.08% 2.4 47% 1.35 0.00 1.35 0 0.92 0.05 0.98 1.0 0.052 38.46 61.73 0.090 1.73 0.94 0.28 0.80 1.11 1.0 0.037 2.41 56.17 0.096 3.94 2.84 2 7.38 460 1.8E-03 3.9E+02 3.4E-04 10 0.219 7152 0.09% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.58% 0.0042
14.436 5601.80 11.8 0.101 11.7 21.6 9.38 0.86%Sand-Slime Tailing 0.059 119.0 0.80 0.29 0.51 1 1.50 17.537 243.76 20.60 22 0.92% 2.4 47% 1.36 0.00 1.36 0 0.92 0.05 0.98 1.0 0.052 37.53 58.13 0.086 1.65 0.94 0.26 0.80 1.11 1.0 0.037 2.50 51.42 0.093 3.75 2.70 2 7.43 460 1.8E-03 3.9E+02 3.4E-04 10 0.220 7130 0.10% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.61% 0.0043
14.600 5601.64 11.3 0.117 11.2 20.4 8.83 1.03%Sand-Slime Tailing 0.059 119.0 0.81 0.30 0.52 1 1.49 16.742 232.71 19.67 20 1.11% 2.5 47% 1.37 0.00 1.37 0 0.92 0.05 0.98 1.0 0.052 37.20 56.86 0.084 1.63 0.94 0.26 0.80 1.11 1.0 0.038 2.79 54.80 0.095 3.83 2.73 2 7.48 500 1.8E-03 4.6E+02 2.9E-04 10 0.220 7109 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.71% 0.0028
14.764 5601.48 10.3 0.048 10.1 26.4 11.43 0.47%Sand-Slime Tailing 0.059 119.0 0.82 0.30 0.52 1 1.48 15.025 208.85 17.73 18 0.51% 2.4 47% 1.38 0.00 1.38 0 0.92 0.05 0.98 1.0 0.052 36.52 54.25 0.082 1.58 0.94 0.24 0.80 1.11 1.0 0.038 2.29 40.67 0.084 3.34 2.46 2 7.53 500 1.8E-03 4.6E+02 2.9E-04 10 0.220 7088 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.73% 0.0028
14.928 5601.31 10.3 0.125 10.2 18.1 7.85 1.21%Sand-Slime Tailing 0.059 119.0 0.83 0.31 0.53 1 1.47 15.024 208.83 17.64 18 1.32% 2.6 47% 1.39 0.00 1.39 0 0.92 0.05 0.98 1.0 0.052 36.49 54.13 0.082 1.58 0.94 0.24 0.80 1.10 1.0 0.038 3.25 57.31 0.098 3.85 2.71 2 7.58 500 1.8E-03 4.6E+02 2.9E-04 10 0.221 7067 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.76% 0.0029
15.092 5601.15 9.7 0.124 9.5 36.6 15.86 1.28%Sand-Slime Tailing 0.059 119.0 0.84 0.31 0.53 1 1.46 13.810 191.97 16.43 17 1.40% 2.6 47% 1.40 0.00 1.40 0 0.91 0.05 0.98 1.0 0.052 36.06 52.49 0.080 1.55 0.94 0.23 0.80 1.10 1.0 0.038 3.52 57.87 0.098 3.84 2.69 2 7.63 500 1.8E-03 4.6E+02 2.9E-04 10 0.221 7047 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.79% 0.0029
15.256 5600.98 10.1 0.123 10.0 14.9 6.47 1.22%Sand-Slime Tailing 0.059 119.0 0.85 0.32 0.53 1 1.45 14.471 201.15 16.96 17 1.34% 2.6 47% 1.41 0.00 1.41 0 0.91 0.05 0.98 1.0 0.051 36.25 53.22 0.081 1.57 0.94 0.24 0.80 1.10 1.0 0.038 3.37 57.25 0.097 3.78 2.67 2 7.68 500 1.8E-03 4.6E+02 3.0E-04 10 0.222 7027 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.82% 0.0030
15.420 5600.82 8.8 0.119 8.6 32.5 14.09 1.36%Sand-Slime Tailing 0.059 119.0 0.86 0.32 0.54 1 1.44 12.356 171.74 14.69 15 1.50% 2.7 47% 1.42 0.00 1.42 0 0.91 0.05 0.98 1.0 0.051 35.45 50.14 0.078 1.51 0.94 0.22 0.80 1.10 1.0 0.038 3.95 58.10 0.098 3.78 2.65 2 7.73 500 1.8E-03 4.6E+02 3.0E-04 10 0.222 7006 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.84% 0.0030
15.584 5600.66 9.0 0.124 8.6 54.7 23.71 1.38%Sand-Slime Tailing 0.059 119.0 0.87 0.33 0.54 1 1.43 12.359 171.79 14.92 15 1.53% 2.7 47% 1.43 0.00 1.43 0 0.91 0.05 0.98 1.0 0.051 35.54 50.46 0.078 1.52 0.94 0.22 0.80 1.10 1.0 0.038 3.94 58.84 0.099 3.78 2.65 2 7.78 500 1.8E-03 4.6E+02 3.0E-04 10 0.222 6987 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.87% 0.0031
15.748 5600.49 9.1 0.139 8.8 60.7 26.31 1.52%Sand-Slime Tailing 0.059 119.0 0.88 0.33 0.55 1 1.42 12.476 173.42 15.12 15 1.68% 2.7 47% 1.43 0.00 1.43 0 0.91 0.05 0.97 1.0 0.051 35.60 50.72 0.078 1.53 0.94 0.22 0.80 1.09 1.0 0.038 4.07 61.49 0.102 3.85 2.69 2 7.83 500 1.8E-03 4.6E+02 3.0E-04 10 0.223 6967 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.90% 0.0031
15.912 5600.33 8.8 0.135 8.4 58.5 25.37 1.54%Sand-Slime Tailing 0.059 119.0 0.89 0.34 0.55 1 1.41 11.857 164.82 14.37 14 1.72% 2.7 47% 1.44 0.00 1.44 0 0.91 0.05 0.97 1.0 0.051 35.34 49.71 0.077 1.51 0.94 0.22 0.80 1.09 1.0 0.038 4.27 61.31 0.101 3.81 2.66 2 7.88 500 1.8E-03 4.6E+02 3.0E-04 10 0.223 6947 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.93% 0.0032
16.076 5600.16 8.0 0.083 7.6 54.0 23.40 1.04%Sand-Slime Tailing 0.059 119.0 0.90 0.34 0.56 1 1.40 10.699 148.72 12.98 13 1.18% 2.7 47% 1.45 0.00 1.45 0 0.91 0.05 0.98 1.0 0.051 34.85 47.83 0.075 1.48 0.94 0.21 0.80 1.09 1.0 0.038 3.97 51.55 0.093 3.46 2.47 2 7.93 500 1.8E-03 4.6E+02 3.1E-04 10 0.223 6928 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.96% 0.0032
16.240 5600.00 7.9 0.083 7.6 49.3 21.36 1.05%Sand-Slime Tailing 0.059 119.0 0.91 0.35 0.56 1 1.40 10.560 146.79 12.76 12 1.19% 2.7 47% 1.46 0.00 1.46 0 0.91 0.05 0.97 1.0 0.051 34.78 47.54 0.075 1.47 0.94 0.21 0.80 1.09 1.0 0.038 4.05 51.70 0.093 3.43 2.45 2 7.98 500 1.8E-03 4.6E+02 3.1E-04 10 0.224 6909 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.99% 0.0033
16.404 5599.84 7.2 0.093 6.8 64.6 27.99 1.29%Slime Tailings 0.057 113.1 0.92 0.35 0.57 1 1.39 9.446 131.29 11.62 11 1.48% 2.8 71% 1.47 0.00 1.47 0 0.90 0.05 0.98 1.0 0.051 34.13 45.75 0.074 1.44 0.94 0.20 0.80 1.09 1.0 0.038 4.74 55.05 0.096 3.51 2.47 2 8.03 500 1.8E-03 4.4E+02 3.3E-04 16 0.475 5678 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.45% 0.0040
16.568 5599.67 7.6 0.134 7.3 52.4 22.70 1.75%Slime Tailings 0.057 113.1 0.93 0.36 0.57 1 1.38 10.095 140.32 12.25 12 2.00% 2.8 71% 1.48 0.00 1.48 0 0.90 0.05 0.97 1.0 0.051 34.35 46.60 0.074 1.46 0.94 0.20 0.80 1.09 1.0 0.038 5.14 62.91 0.103 3.76 2.61 2 8.08 500 1.8E-03 4.4E+02 3.3E-04 16 0.476 5663 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.48% 0.0041
16.732 5599.51 6.9 0.131 6.6 54.4 23.55 1.89%Slime Tailings 0.057 113.1 0.94 0.36 0.57 1 1.37 9.064 125.99 11.07 10 2.18% 2.9 71% 1.49 0.00 1.49 0 0.90 0.05 0.97 1.0 0.051 33.94 45.01 0.073 1.43 0.94 0.19 0.80 1.08 1.0 0.038 5.74 63.53 0.104 3.76 2.60 2 8.13 500 1.8E-03 4.4E+02 3.3E-04 16 0.476 5649 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.51% 0.0041
16.896 5599.34 8.8 0.147 8.5 39.7 17.21 1.67%Slime Tailings 0.057 113.1 0.95 0.37 0.58 1 1.36 11.645 161.86 13.92 14 1.88% 2.8 71% 1.50 0.00 1.50 0 0.90 0.05 0.97 1.0 0.051 34.93 48.85 0.076 1.51 0.94 0.22 0.80 1.08 1.0 0.038 4.57 63.62 0.104 3.74 2.62 2 8.18 500 1.8E-03 4.4E+02 3.3E-04 16 0.476 5634 0.09% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.54% 0.0042
17.060 5599.18 7.0 0.190 6.8 39.7 17.19 2.72%Slime Tailings 0.057 113.1 0.96 0.38 0.58 1 1.36 9.153 127.22 11.02 10 3.15% 3.0 71% 1.51 0.00 1.51 0 0.90 0.05 0.97 1.0 0.051 33.93 44.95 0.073 1.44 0.94 0.19 0.80 1.08 1.0 0.038 6.70 73.85 0.117 4.20 2.82 2 8.23 500 1.8E-03 4.4E+02 3.4E-04 16 0.477 5620 0.09% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.57% 0.0042
17.224 5599.02 6.5 0.176 6.2 52.9 22.94 2.70%Slime Tailings 0.057 113.1 0.97 0.38 0.59 1 1.35 8.333 115.83 10.20 9 3.18% 3.0 71% 1.52 0.00 1.52 0 0.90 0.05 0.97 1.0 0.051 33.64 43.83 0.072 1.42 0.94 0.18 0.80 1.08 1.0 0.038 7.10 72.42 0.115 4.09 2.76 2 8.28 500 1.8E-03 4.4E+02 3.4E-04 16 0.477 5606 0.10% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.60% 0.0043
P = γeff*(Geff
/Gmax)
(tsf)
Volumetric Strain for Design Event, εv (%)
Incrementa
l Consolidation (ft)
CN
Volumetric
Strain for
Design
Event, εv (%)
Incremental Consolidation (ft)
TOTAL SEISMIC SETTLEMENT (FT):
Midpoint Depth at t1, z1
Shear Wave Velocity, Vs
Soil Density, ρ (tcf)b
Threshhol
d Shear Strain, γtv
(%)
Volumetri
c Strain at
15 Cycles,
εc-15 (%)Rc
Plasticity Index, PI g1 g2
Shear Strain, γ (%)a
Effective Stress at Bottom of Layer
Effective Stress at Midpoint of Layer FINAL COVER
Erosion Protection Layer
Water Storage/Rooting Zone Layer
qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Equil Pore Pressure at Midpoint of Layer (tsf)
Max Shear
Strain
Modulus,
Gmax (tsf)
Unit Weight (tcf)
Unit Weight (pcf)
Total Stress at Bottom of Layer
Total Stress at Midpoint of Layer
Equil Pore Pressure at Bottom of Layer
Cyclic Resistance Ratio
FoS
Cyclic Stress Ratio
FoS
∆qc1n qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Threshhol
d Shear
Strain, γtv (%)
Volumetric Strain at 15 Cycles, εc-15 (%)RcCNg1g2
Shear
Strain, γ ab
Seismic Settlement Analysis - Stewart et al (2004)
Shear Wave Velocity, Vs
High Compaction Layer
Platform/Random Fill Layer
Pw (u2)Pw (u2)
2013 CPT Data from ConeTec CPT Data Interpretations
fs/qt
Material
Type (as determined by fines
Unit Weight Unit Weight
Total
Stress
at time of CPT
Depth
at time of CPT Elevation qt fs qc
Effective
Stress at
time of CPT
Saturated
at time of CPT
Type Index,
Ic FC
Youd, et al (2001)
Max. Horiz. Acceleration, Amax/g: 0.15
Earthquake Moment Magnitude, M:
Idriss and Boulanger (2008)
Max. Horiz. Acceleration, Amax/g:
Earthquake Moment Magnitude, M:
Magnitude Scaling Factor, MSF:
WHITE MESA TAILINGS REPOSITORY LIQUEFACTION AND SEISMIC SETTLEMENT ANALYSES - 2W4-C Elev. at Top of Layer (ft)
Elev. At Midpoint of Layer (ft)
Elev. At Bottom of Layer
Thickness of Layer (ft)
5.5
Magnitude Scaling Factor, MSF:
Equil
Pore
Pressure at time of
Conditions at t1 Liquefaction Triggering AnalysesEquil
Pore Pressure at t1CN qc1 qc1 qc1N
Normalized
Cone
Penetration Resistance, Qt
Normalize
d Friction
Ratio, Fr (%)
Total Stress at t1 Liquefiable?1=Yes
2=No
Cyclic Stress RatioEffective Stress at t1
Saturated at t1
Idriss & Boulanger (2008)
CSR
M=7.5,
s'v=1atm
Kc
Scaling Factor for stress ration, rm
Volumetric Strain Ratio for Site-Specific Design Earthq
Equiv. Number of Uniform Strain Cycles, N
Youd et al. (2001)
CSR
M=7.5,
s'v=1atm
Depth at t1, z1
Soil Density, ρ
Maximum Shear Strain
Modulus,
Gmax
P =
γeff*(Geff/Gmax)
Plastici
ty Index, PI
Liquef_SeismicSettle_30Aug2015.xls Page 8 of 29
Energy Fuels Resources (USA) Inc.White Mesa Mill
Seismic Settlement Analyses
Data File: 13-52106_SP2W4-C-BSC-CPT 5611.20 Water surface elevation during CPT investigation (ft am5616.24 Ground Surface Elevation at time of CPT (ft amsl)
Location: White Mesa 2013 CPT Investigation 0.15 5607.96 Water surface elevation at t0 (ft amsl)5626.19 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl)
..\..\..\6.2.3 Field Data\2013 Field Investigation\Conetec Dat 5.5 5593.50 Water surface elevation at t1 (ft amsl) 0.50 Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after plac 5626.19 5625.94 5625.69 0.50 0.055 110 0.028 0.014 0.00 0.00 0.028 0.014 0.08 508 1.7E-03 4.4E+02 3.0E-06 11 0.068 46696 0.00% 1.20 0.80 0.04% 0.000 0.32 0.133 0.778 0.00% 0.0000
Tailings Sands 1.69 5588.50 Water surface elevation at t2 (ft amsl)3.50 Thickness of Water Storage/Rooting Zone (ft)5625.69 5623.94 5622.19 3.50 0.054 107 0.215 0.121 0.00 0.00 0.215 0.121 0.69 508 1.7E-03 4.3E+02 2.8E-05 11 0.118 18930 0.00% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
Tailings Sand-Slimes 4.00 Thickness of High Compaction Layer (ft)5622.19 5620.19 5618.19 4.00 0.060 120 0.454 0.334 0.00 0.00 0.454 0.334 1.83 508 1.9E-03 4.8E+02 6.8E-05 11 0.153 12419 0.01% 0.65 0.75 0.02% 0.000 0.34 0.079 0.765 0.00% 0.0000
Tailings Slimes 1.44 1.95 Thickness of Random/Platform Fill on on top of existing interim cover (ft) 5618.19 5617.22 5616.24 1.95 0.050 101 0.552 0.503 0.00 0.00 0.552 0.503 2.74 508 1.6E-03 4.0E+02 1.2E-04 11 0.170 10482 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
Interim Cover 0.47 1104.55 Additional Stress due to Final Cover Placement, ΔσFC (psf)
Cells Requiring User Input/Manipulation 2.21 2.21 7.51 5588.50 Elevation of bottom of tailings (liner) (ft amsl)
0.425
rd Cσ Kσ Ka rd Dr f Kσ Ka Avg
(ft) (ft amsl) TSF TSF TSF (ft) PSI (%) (tcf) (pcf) (tsf)(tsf)(tsf) 1=Yes TSF MPa % (tsf)(tsf)(tsf) 1=Yes FoS m
0=No 0=No (ft/sec) (tcf) tsf tsf (%)
P = γeff*(Geff
/Gmax)
(tsf)
Volumetric Strain for Design Event, εv (%)
Incrementa
l Consolidation (ft)
CN
Volumetric
Strain for
Design
Event, εv (%)
Incremental Consolidation (ft)
TOTAL SEISMIC SETTLEMENT (FT):
Midpoint Depth at t1, z1
Shear Wave Velocity, Vs
Soil Density, ρ (tcf)b
Threshhol
d Shear Strain, γtv
(%)
Volumetri
c Strain at
15 Cycles,
εc-15 (%)Rc
Plasticity Index, PI g1 g2
Shear Strain, γ (%)a
Effective Stress at Bottom of Layer
Effective Stress at Midpoint of Layer FINAL COVER
Erosion Protection Layer
Water Storage/Rooting Zone Layer
qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Equil Pore Pressure at Midpoint of Layer (tsf)
Max Shear
Strain
Modulus,
Gmax (tsf)
Unit Weight (tcf)
Unit Weight (pcf)
Total Stress at Bottom of Layer
Total Stress at Midpoint of Layer
Equil Pore Pressure at Bottom of Layer
Cyclic Resistance Ratio
FoS
Cyclic Stress Ratio
FoS
∆qc1n qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Threshhol
d Shear
Strain, γtv (%)
Volumetric Strain at 15 Cycles, εc-15 (%)RcCNg1g2
Shear
Strain, γ ab
Seismic Settlement Analysis - Stewart et al (2004)
Shear Wave Velocity, Vs
High Compaction Layer
Platform/Random Fill Layer
Pw (u2)Pw (u2)
2013 CPT Data from ConeTec CPT Data Interpretations
fs/qt
Material
Type (as determined by fines
Unit Weight Unit Weight
Total
Stress
at time of CPT
Depth
at time of CPT Elevation qt fs qc
Effective
Stress at
time of CPT
Saturated
at time of CPT
Type Index,
Ic FC
Youd, et al (2001)
Max. Horiz. Acceleration, Amax/g: 0.15
Earthquake Moment Magnitude, M:
Idriss and Boulanger (2008)
Max. Horiz. Acceleration, Amax/g:
Earthquake Moment Magnitude, M:
Magnitude Scaling Factor, MSF:
WHITE MESA TAILINGS REPOSITORY LIQUEFACTION AND SEISMIC SETTLEMENT ANALYSES - 2W4-C Elev. at Top of Layer (ft)
Elev. At Midpoint of Layer (ft)
Elev. At Bottom of Layer
Thickness of Layer (ft)
5.5
Magnitude Scaling Factor, MSF:
Equil
Pore
Pressure at time of
Conditions at t1 Liquefaction Triggering AnalysesEquil
Pore Pressure at t1CN qc1 qc1 qc1N
Normalized
Cone
Penetration Resistance, Qt
Normalize
d Friction
Ratio, Fr (%)
Total Stress at t1 Liquefiable?1=Yes
2=No
Cyclic Stress RatioEffective Stress at t1
Saturated at t1
Idriss & Boulanger (2008)
CSR
M=7.5,
s'v=1atm
Kc
Scaling Factor for stress ration, rm
Volumetric Strain Ratio for Site-Specific Design Earthq
Equiv. Number of Uniform Strain Cycles, N
Youd et al. (2001)
CSR
M=7.5,
s'v=1atm
Depth at t1, z1
Soil Density, ρ
Maximum Shear Strain
Modulus,
Gmax
P =
γeff*(Geff/Gmax)
Plastici
ty Index, PI
17.388 5598.85 7.9 0.164 7.7 33.1 14.33 2.07%Slime Tailings 0.057 113.1 0.98 0.39 0.59 1 1.34 10.339 143.72 12.33 12 2.36% 2.9 71% 1.53 0.00 1.53 0 0.90 0.05 0.97 1.0 0.050 34.38 46.71 0.074 1.47 0.94 0.20 0.80 1.08 1.0 0.038 5.52 68.04 0.109 3.85 2.66 2 8.33 500 1.8E-03 4.4E+02 3.4E-04 16 0.477 5592 0.10% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.62% 0.0043
17.552 5598.69 11.4 0.123 11.3 9.0 3.89 1.08%Sand-Slime Tailing 0.059 119.0 0.99 0.39 0.60 1 1.33 15.075 209.54 17.60 17 1.19% 2.6 47% 1.54 0.00 1.54 0 0.90 0.05 0.97 1.0 0.050 36.47 54.07 0.082 1.62 0.94 0.24 0.80 1.08 1.0 0.038 3.19 56.15 0.096 3.38 2.50 2 8.38 500 1.8E-03 4.6E+02 3.2E-04 10 0.227 6768 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.20% 0.0036
17.716 5598.52 11.9 0.100 11.9 9.2 3.97 0.84%Sand-Slime Tailing 0.059 119.0 1.00 0.40 0.60 1 1.32 15.752 218.95 18.38 18 0.91% 2.5 47% 1.55 0.00 1.55 0 0.89 0.05 0.97 1.0 0.050 36.75 55.13 0.083 1.65 0.94 0.25 0.80 1.07 1.0 0.038 2.79 51.35 0.093 3.22 2.43 2 8.43 500 1.8E-03 4.6E+02 3.3E-04 10 0.227 6750 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.23% 0.0037
17.880 5598.36 13.3 0.080 13.2 10.8 4.68 0.60%Sand-Slime Tailing 0.059 119.0 1.01 0.40 0.61 1 1.32 17.409 241.99 20.32 20 0.65% 2.4 47% 1.56 0.00 1.56 0 0.89 0.05 0.97 1.0 0.050 37.43 57.75 0.085 1.71 0.94 0.26 0.80 1.07 1.0 0.038 2.30 46.76 0.089 3.07 2.39 2 8.48 500 1.8E-03 4.6E+02 3.3E-04 10 0.227 6732 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.26% 0.0037
18.044 5598.20 11.4 0.112 11.3 11.6 5.01 0.98%Sand-Slime Tailing 0.059 119.0 1.02 0.41 0.61 1 1.31 14.805 205.79 17.31 17 1.08% 2.6 47% 1.57 0.00 1.57 0 0.89 0.05 0.97 1.0 0.050 36.37 53.68 0.081 1.62 0.93 0.24 0.80 1.07 1.0 0.038 3.13 54.15 0.095 3.25 2.43 2 8.53 500 1.8E-03 4.6E+02 3.3E-04 10 0.228 6715 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.29% 0.0038
18.208 5598.03 9.8 0.153 9.6 32.4 14.04 1.56%Sand-Slime Tailing 0.059 119.0 1.03 0.41 0.61 1 1.30 12.479 173.46 14.80 14 1.75% 2.7 47% 1.58 0.00 1.58 0 0.89 0.05 0.97 1.0 0.050 35.49 50.29 0.078 1.56 0.93 0.22 0.80 1.07 1.0 0.039 4.29 63.44 0.104 3.53 2.54 2 8.58 500 1.8E-03 4.6E+02 3.3E-04 10 0.228 6698 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.32% 0.0038
18.372 5597.87 8.7 0.140 8.4 48.2 20.90 1.61%Slime Tailings 0.057 113.1 1.03 0.42 0.62 1 1.29 10.848 150.78 13.05 12 1.83% 2.8 71% 1.59 0.00 1.59 0 0.89 0.05 0.97 1.0 0.050 34.63 47.68 0.075 1.51 0.93 0.21 0.80 1.07 1.0 0.039 4.81 62.72 0.103 3.48 2.49 2 8.63 500 1.8E-03 4.4E+02 3.5E-04 16 0.480 5507 0.10% 2.00 0.65 0.03% 0.018 0.34 0.079 0.765 2.81% 0.0046
18.537 5597.70 13.2 0.140 13.0 34.0 14.71 1.06%Sand-Slime Tailing 0.059 119.0 1.04 0.42 0.62 1 1.29 16.691 232.01 19.70 19 1.15% 2.5 47% 1.60 0.00 1.60 0 0.89 0.05 0.97 1.0 0.050 37.21 56.91 0.085 1.70 0.93 0.26 0.80 1.07 1.0 0.039 2.92 57.59 0.098 3.28 2.49 2 8.68 500 1.8E-03 4.6E+02 3.4E-04 10 0.229 6664 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.38% 0.0039
18.701 5597.54 16.6 0.192 16.5 16.7 7.23 1.15%Sand-Slime Tailing 0.059 119.0 1.05 0.43 0.63 1 1.27 21.007 292.00 24.55 25 1.23% 2.5 47% 1.61 0.00 1.61 0 0.89 0.06 0.97 1.0 0.049 38.91 63.46 0.092 1.85 0.93 0.29 0.80 1.07 1.0 0.039 2.55 62.56 0.103 3.42 2.64 2 8.73 500 1.8E-03 4.6E+02 3.4E-04 10 0.229 6648 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.41% 0.0039
18.865 5597.38 18.6 0.304 18.5 20.3 8.79 1.64%Sand-Slime Tailing 0.059 119.0 1.06 0.43 0.63 1 1.26 23.192 322.37 27.12 28 1.74% 2.5 47% 1.62 0.00 1.62 0 0.89 0.06 0.96 1.0 0.049 39.81 66.93 0.096 1.94 0.93 0.30 0.80 1.06 1.0 0.039 2.76 74.88 0.119 3.94 2.94 2 8.78 500 1.8E-03 4.6E+02 3.4E-04 10 0.230 6631 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.43% 0.0040
19.029 5597.21 12.1 0.344 12.0 21.5 9.30 2.85%Slime Tailings 0.057 113.1 1.07 0.44 0.64 1 1.27 15.124 210.23 17.76 17 3.12% 2.8 71% 1.63 0.00 1.63 0 0.88 0.05 0.97 1.0 0.049 36.27 54.04 0.081 1.65 0.93 0.24 0.80 1.06 1.0 0.039 4.91 87.26 0.142 4.66 3.15 2 8.83 500 1.8E-03 4.4E+02 3.6E-04 16 0.481 5453 0.11% 2.00 0.65 0.03% 0.019 0.34 0.079 0.765 2.93% 0.0048
19.193 5597.05 10.5 0.228 10.4 14.6 6.31 2.17%Slime Tailings 0.057 113.1 1.08 0.44 0.64 1 1.26 13.121 182.38 15.37 15 2.42% 2.8 71% 1.63 0.00 1.63 0 0.88 0.05 0.97 1.0 0.049 35.44 50.81 0.078 1.58 0.93 0.23 0.80 1.06 1.0 0.039 4.83 74.31 0.118 3.86 2.72 2 8.88 500 1.8E-03 4.4E+02 3.6E-04 16 0.481 5440 0.11% 2.00 0.65 0.03% 0.019 0.34 0.079 0.765 2.96% 0.0048
19.357 5596.88 14.9 0.247 14.8 23.9 10.36 1.66%Sand-Slime Tailing 0.059 119.0 1.09 0.45 0.65 1 1.25 18.446 256.39 21.64 21 1.79% 2.6 47% 1.64 0.00 1.64 0 0.88 0.05 0.97 1.0 0.049 37.89 59.53 0.087 1.78 0.93 0.27 0.80 1.06 1.0 0.039 3.31 71.69 0.114 3.71 2.74 2 8.93 500 1.8E-03 4.6E+02 3.5E-04 10 0.231 6583 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.52% 0.0041
19.521 5596.72 13.9 0.205 13.8 21.2 9.20 1.47%Sand-Slime Tailing 0.059 119.0 1.10 0.45 0.65 1 1.25 17.183 238.84 20.15 20 1.60% 2.6 47% 1.65 0.00 1.65 0 0.88 0.05 0.97 1.0 0.049 37.37 57.52 0.085 1.73 0.93 0.26 0.80 1.06 1.0 0.039 3.32 66.95 0.108 3.48 2.61 2 8.98 500 1.8E-03 4.6E+02 3.5E-04 10 0.231 6567 0.09% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.55% 0.0042
19.685 5596.56 13.2 0.218 13.1 22.9 9.93 1.65%Sand-Slime Tailing 0.059 119.0 1.11 0.46 0.66 1 1.24 16.221 225.47 19.05 19 1.80% 2.7 47% 1.66 0.00 1.66 0 0.88 0.05 0.97 1.0 0.049 36.98 56.03 0.084 1.70 0.93 0.25 0.80 1.06 1.0 0.039 3.65 69.51 0.111 3.56 2.63 2 9.03 538 1.8E-03 5.3E+02 3.0E-04 10 0.231 6551 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.77% 0.0029
19.849 5596.39 13.5 0.200 13.2 37.2 16.11 1.49%Sand-Slime Tailing 0.059 119.0 1.12 0.46 0.66 1 1.23 16.280 226.29 19.24 19 1.62% 2.6 47% 1.67 0.00 1.67 0 0.88 0.05 0.97 1.0 0.049 37.05 56.29 0.084 1.71 0.93 0.25 0.80 1.05 1.0 0.039 3.47 66.72 0.108 3.42 2.57 2 9.08 538 1.8E-03 5.3E+02 3.1E-04 10 0.232 6535 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.80% 0.0029
20.013 5596.23 12.3 0.225 12.1 40.5 17.56 1.82%Sand-Slime Tailing 0.059 119.0 1.13 0.47 0.66 1 1.22 14.794 205.64 17.54 17 2.01% 2.7 47% 1.68 0.00 1.68 0 0.88 0.05 0.97 1.0 0.049 36.45 54.00 0.081 1.66 0.93 0.24 0.80 1.05 1.0 0.039 4.08 71.55 0.114 3.60 2.63 2 9.13 538 1.8E-03 5.3E+02 3.1E-04 10 0.232 6520 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.82% 0.0030
20.177 5596.06 11.2 0.272 11.1 13.6 5.88 2.44%Slime Tailings 0.057 113.1 1.14 0.47 0.67 1 1.22 13.492 187.53 15.79 15 2.72% 2.8 71% 1.69 0.00 1.69 0 0.87 0.05 0.97 1.0 0.049 35.59 51.38 0.079 1.61 0.93 0.23 0.80 1.05 1.0 0.039 5.03 79.45 0.127 3.98 2.80 2 9.18 538 1.8E-03 5.1E+02 3.2E-04 16 0.483 5363 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.25% 0.0037
20.341 5595.90 8.2 0.252 7.9 49.1 21.27 3.08%Slime Tailings 0.057 113.1 1.15 0.48 0.67 1 1.21 9.557 132.85 11.53 10 3.58% 3.0 71% 1.70 0.00 1.70 0 0.87 0.05 0.97 1.0 0.049 34.10 45.64 0.073 1.50 0.93 0.20 0.80 1.05 1.0 0.039 7.03 81.06 0.130 4.05 2.78 2 9.23 538 1.8E-03 5.1E+02 3.3E-04 16 0.484 5351 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.27% 0.0037
20.505 5595.74 9.4 0.193 9.0 75.9 32.90 2.05%Slime Tailings 0.057 113.1 1.16 0.48 0.68 1 1.21 10.815 150.33 13.23 12 2.33% 2.9 71% 1.71 0.00 1.71 0 0.87 0.05 0.97 1.0 0.049 34.69 47.92 0.076 1.55 0.93 0.21 0.80 1.05 1.0 0.039 5.35 70.73 0.113 3.52 2.53 2 9.28 538 1.8E-03 5.1E+02 3.3E-04 16 0.484 5339 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.30% 0.0038
20.669 5595.57 9.3 0.202 9.0 52.0 22.51 2.18%Slime Tailings 0.057 113.1 1.17 0.49 0.68 1 1.20 10.763 149.61 12.95 12 2.49% 2.9 71% 1.72 0.00 1.72 0 0.87 0.05 0.97 1.0 0.049 34.60 47.55 0.075 1.54 0.92 0.21 0.80 1.05 1.0 0.039 5.58 72.33 0.115 3.57 2.56 2 9.33 538 1.8E-03 5.1E+02 3.3E-04 16 0.484 5327 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.32% 0.0038
20.833 5595.41 8.3 0.219 7.8 73.7 31.95 2.64%Slime Tailings 0.057 113.1 1.18 0.49 0.69 1 1.20 9.349 129.95 11.50 10 3.08% 3.0 71% 1.73 0.00 1.73 0 0.87 0.05 0.97 1.0 0.049 34.09 45.59 0.073 1.51 0.92 0.20 0.80 1.05 1.0 0.039 6.64 76.37 0.121 3.75 2.63 2 9.38 538 1.8E-03 5.1E+02 3.3E-04 16 0.485 5315 0.09% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.34% 0.0038
20.997 5595.24 12.0 0.180 11.6 62.5 27.06 1.50%Sand-Slime Tailing 0.059 119.0 1.19 0.50 0.69 1 1.19 13.843 192.42 16.62 16 1.66% 2.7 47% 1.74 0.00 1.74 0 0.87 0.05 0.96 1.0 0.048 36.13 52.75 0.080 1.66 0.92 0.24 0.80 1.05 1.0 0.039 3.93 65.36 0.106 3.25 2.45 2 9.43 538 1.8E-03 5.3E+02 3.2E-04 10 0.234 6432 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.95% 0.0032
21.161 5595.08 19.0 0.205 19.0 5.5 2.37 1.08%Sand-Slime Tailing 0.059 119.0 1.20 0.50 0.69 1 1.17 22.300 309.97 25.95 26 1.15% 2.4 47% 1.75 0.00 1.75 0 0.87 0.06 0.96 1.0 0.048 39.40 65.35 0.094 1.95 0.92 0.29 0.80 1.04 1.0 0.039 2.42 62.89 0.103 3.15 2.55 2 9.48 538 1.8E-03 5.3E+02 3.2E-04 10 0.234 6417 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.98% 0.0032
21.325 5594.91 17.5 0.316 17.4 19.7 8.54 1.80%Sand-Slime Tailing 0.059 119.0 1.21 0.51 0.70 1 1.17 20.385 283.36 23.84 23 1.94% 2.6 47% 1.76 0.00 1.76 0 0.87 0.05 0.96 1.0 0.048 38.66 62.51 0.091 1.89 0.92 0.28 0.80 1.04 1.0 0.039 3.25 77.41 0.123 3.74 2.81 2 9.53 538 1.8E-03 5.3E+02 3.2E-04 10 0.235 6402 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 2.00% 0.0033
21.489 5594.75 17.3 0.420 17.1 33.3 14.41 2.43%Sand-Slime Tailing 0.059 119.0 1.22 0.51 0.70 1 1.17 19.921 276.90 23.42 23 2.62% 2.7 47% 1.77 0.00 1.77 0 0.86 0.05 0.96 1.0 0.048 38.51 61.93 0.090 1.88 0.92 0.28 0.80 1.04 1.0 0.039 3.80 88.94 0.145 4.40 3.14 2 9.58 538 1.8E-03 5.3E+02 3.2E-04 10 0.235 6387 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 2.02% 0.0033
21.653 5594.59 15.7 0.502 15.4 48.2 20.90 3.21%Slime Tailings 0.057 113.1 1.23 0.52 0.71 1 1.17 17.885 248.60 21.18 20 3.48% 2.8 71% 1.78 0.00 1.78 0 0.86 0.05 0.96 1.0 0.048 37.46 58.64 0.086 1.80 0.92 0.27 0.80 1.04 1.0 0.039 4.68 99.17 0.171 5.14 3.47 2 9.63 538 1.8E-03 5.1E+02 3.4E-04 16 0.486 5255 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.46% 0.0040
21.817 5594.42 15.8 0.368 15.7 17.6 7.63 2.33%Sand-Slime Tailing 0.059 119.0 1.24 0.52 0.71 1 1.16 18.175 252.63 21.26 20 2.53% 2.7 47% 1.79 0.00 1.79 0 0.86 0.05 0.96 1.0 0.048 37.76 59.01 0.087 1.81 0.92 0.27 0.80 1.04 1.0 0.039 4.01 85.19 0.137 4.12 2.96 2 9.68 538 1.8E-03 5.3E+02 3.3E-04 10 0.236 6359 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.07% 0.0034
21.981 5594.26 15.2 0.338 15.1 19.9 8.62 2.23%Sand-Slime Tailing 0.059 119.0 1.25 0.53 0.72 1 1.15 17.362 241.33 20.33 19 2.43% 2.7 47% 1.80 0.00 1.80 0 0.86 0.05 0.96 1.0 0.048 37.43 57.76 0.085 1.79 0.91 0.26 0.80 1.04 1.0 0.039 4.06 82.51 0.132 3.94 2.86 2 9.73 538 1.8E-03 5.3E+02 3.3E-04 10 0.236 6345 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.09% 0.0034
22.145 5594.09 12.0 0.255 11.8 32.8 14.22 2.12%Slime Tailings 0.057 113.1 1.25 0.53 0.72 1 1.15 13.551 188.36 16.01 15 2.37% 2.8 71% 1.81 0.00 1.81 0 0.86 0.05 0.96 1.0 0.048 35.66 51.68 0.079 1.65 0.91 0.23 0.80 1.04 1.0 0.039 4.75 76.11 0.121 3.59 2.62 2 9.78 538 1.8E-03 5.1E+02 3.5E-04 16 0.487 5221 0.09% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.53% 0.0042
22.309 5593.93 8.6 0.140 8.2 71.6 31.03 1.62%Slime Tailings 0.057 113.1 1.26 0.54 0.73 1 1.14 9.341 129.83 11.44 10 1.90% 2.9 71% 1.82 0.00 1.82 0 0.86 0.05 0.97 1.0 0.048 34.07 45.51 0.073 1.53 0.91 0.20 0.80 1.03 1.0 0.039 5.55 63.50 0.104 3.07 2.30 2 9.83 538 1.8E-03 5.1E+02 3.5E-04 16 0.487 5210 0.09% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.55% 0.0042
22.473 5593.77 9.5 0.099 9.0 82.5 35.75 1.04%Sand-Slime Tailing 0.059 119.0 1.27 0.54 0.73 1 1.14 10.238 142.31 12.57 11 1.20% 2.7 47% 1.83 0.00 1.83 0 0.86 0.05 0.96 1.0 0.048 34.71 47.28 0.075 1.57 0.91 0.20 0.80 1.03 1.0 0.039 4.33 54.47 0.095 2.79 2.18 2 9.88 538 1.8E-03 5.3E+02 3.3E-04 10 0.237 6304 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.16% 0.0035
22.638 5593.60 10.4 0.096 9.8 94.2 40.81 0.93%Sand-Slime Tailing 0.059 119.0 1.28 0.55 0.73 1 1.13 11.059 153.72 13.62 12 1.06% 2.7 47% 1.84 0.00 1.84 0 0.85 0.05 0.96 1.0 0.048 35.08 48.70 0.076 1.60 0.91 0.21 0.80 1.03 1.0 0.039 3.88 52.88 0.094 2.74 2.17 2 9.93 538 1.8E-03 5.3E+02 3.3E-04 10 0.237 6290 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.18% 0.0036
22.802 5593.44 9.9 0.099 9.3 99.2 43.00 1.00%Sand-Slime Tailing 0.059 119.0 1.29 0.55 0.74 1 1.13 10.431 144.98 12.92 12 1.15% 2.7 47% 1.85 0.00 1.84 1 0.85 0.05 0.96 1.0 0.048 34.83 47.76 0.075 1.58 0.91 0.21 0.80 1.03 1.0 0.039 4.18 54.08 0.095 2.75 2.17 2 9.98 538 1.8E-03 5.3E+02 3.4E-04 10 0.237 6279 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.20% 0.0036
22.966 5593.27 10.2 0.107 9.5 106.1 45.99 1.05%Sand-Slime Tailing 0.059 119.0 1.30 0.56 0.74 1 1.12 10.660 148.17 13.24 12 1.21% 2.7 47% 1.86 0.01 1.85 1 0.85 0.05 0.96 1.0 0.048 34.95 48.19 0.076 1.59 0.91 0.21 0.80 1.03 1.0 0.039 4.18 55.34 0.096 2.76 2.18 2 10.03 538 1.8E-03 5.3E+02 3.4E-04 10 0.237 6272 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.23% 0.0037
23.130 5593.11 10.7 0.153 10.0 111.1 48.14 1.44%Sand-Slime Tailing 0.059 119.0 1.31 0.56 0.75 1 1.12 11.110 154.43 13.80 12 1.64% 2.8 47% 1.87 0.01 1.85 1 0.85 0.05 0.96 1.0 0.048 35.14 48.94 0.076 1.60 0.90 0.21 0.80 1.03 1.0 0.039 4.56 63.00 0.103 2.96 2.28 2 10.08 538 1.8E-03 5.3E+02 3.4E-04 10 0.238 6266 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.26% 0.0037
23.294 5592.95 12.8 0.177 12.1 112.8 48.88 1.39%Sand-Slime Tailing 0.059 119.0 1.32 0.57 0.75 1 1.11 13.388 186.09 16.46 15 1.55% 2.7 47% 1.88 0.02 1.86 1 0.85 0.05 0.96 1.0 0.048 36.07 52.53 0.080 1.68 0.90 0.23 0.80 1.03 1.0 0.039 3.91 64.31 0.105 2.98 2.33 2 10.13 538 1.8E-03 5.3E+02 3.4E-04 10 0.238 6259 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.28% 0.0037
23.458 5592.78 14.7 0.172 14.3 63.4 27.46 1.17%Sand-Slime Tailing 0.059 119.0 1.33 0.57 0.76 1 1.10 15.787 219.45 18.84 18 1.29% 2.6 47% 1.88 0.02 1.86 1 0.85 0.05 0.96 1.0 0.048 36.91 55.75 0.083 1.75 0.90 0.25 0.80 1.03 1.0 0.039 3.27 61.70 0.102 2.87 2.31 2 10.18 538 1.8E-03 5.3E+02 3.4E-04 10 0.238 6253 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.31% 0.0038
23.622 5592.62 13.1 0.169 12.7 73.0 31.63 1.29%Sand-Slime Tailing 0.059 119.0 1.34 0.58 0.76 1 1.10 13.909 193.34 16.74 15 1.44% 2.7 47% 1.89 0.03 1.87 1 0.85 0.05 0.96 1.0 0.048 36.17 52.91 0.080 1.68 0.90 0.24 0.80 1.02 1.0 0.039 3.75 62.77 0.103 2.89 2.28 2 10.23 538 1.8E-03 5.3E+02 3.5E-04 10 0.238 6246 0.09% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.34% 0.0038
23.786 5592.45 13.9 0.141 13.4 84.0 36.41 1.02%Sand-Slime Tailing 0.059 119.0 1.35 0.58 0.77 1 1.09 14.609 203.07 17.63 16 1.13% 2.6 47% 1.90 0.03 1.87 1 0.85 0.05 0.96 1.0 0.048 36.49 54.12 0.082 1.71 0.90 0.24 0.80 1.02 1.0 0.039 3.27 57.67 0.098 2.72 2.21 2 10.28 538 1.8E-03 5.3E+02 3.5E-04 10 0.238 6240 0.09% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.36% 0.0039
23.950 5592.29 12.4 0.180 12.0 69.1 29.93 1.45%Sand-Slime Tailing 0.059 119.0 1.36 0.59 0.77 1 1.09 13.081 181.83 15.74 14 1.62% 2.7 47% 1.91 0.04 1.88 1 0.84 0.05 0.96 1.0 0.048 35.82 51.56 0.079 1.65 0.90 0.23 0.80 1.02 1.0 0.040 4.14 65.19 0.106 2.92 2.29 2 10.33 538 1.8E-03 5.3E+02 3.5E-04 10 0.238 6233 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.39% 0.0039
24.114 5592.13 12.8 0.188 11.8 149.2 64.65 1.47%Sand-Slime Tailing 0.059 119.0 1.37 0.60 0.78 1 1.08 12.814 178.11 16.06 15 1.65% 2.7 47% 1.92 0.04 1.88 1 0.84 0.05 0.96 1.0 0.048 35.93 51.99 0.079 1.66 0.90 0.23 0.80 1.02 1.0 0.040 4.11 66.05 0.107 2.93 2.29 2 10.38 538 1.8E-03 5.3E+02 3.5E-04 10 0.239 6227 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.42% 0.0040
24.278 5591.96 13.0 0.159 12.1 152.5 66.07 1.22%Sand-Slime Tailing 0.059 119.0 1.38 0.60 0.78 1 1.08 13.024 181.04 16.32 15 1.37% 2.7 47% 1.93 0.05 1.89 1 0.84 0.05 0.96 1.0 0.048 36.03 52.34 0.080 1.67 0.90 0.23 0.80 1.02 1.0 0.040 3.76 61.39 0.102 2.76 2.21 2 10.43 538 1.8E-03 5.3E+02 3.5E-04 10 0.239 6221 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.45% 0.0040
24.442 5591.80 13.9 0.175 13.0 152.5 66.07 1.26%Sand-Slime Tailing 0.059 119.0 1.39 0.61 0.79 1 1.07 13.931 193.64 17.37 16 1.40% 2.6 47% 1.94 0.05 1.89 1 0.84 0.05 0.96 1.0 0.048 36.39 53.76 0.081 1.69 0.89 0.24 0.80 1.02 1.0 0.040 3.62 62.94 0.103 2.79 2.24 2 10.48 538 1.8E-03 5.3E+02 3.5E-04 10 0.239 6214 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.47% 0.0041
24.606 5591.63 14.2 0.192 13.3 152.9 66.26 1.35%Sand-Slime Tailing 0.059 119.0 1.40 0.61 0.79 1 1.07 14.198 197.35 17.68 16 1.50% 2.7 47% 1.95 0.06 1.89 1 0.84 0.05 0.96 1.0 0.048 36.50 54.18 0.082 1.70 0.89 0.24 0.80 1.02 1.0 0.040 3.68 65.11 0.106 2.84 2.27 2 10.53 538 1.8E-03 5.3E+02 3.6E-04 10 0.239 6208 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.50% 0.0041
24.770 5591.47 13.7 0.186 12.8 151.0 65.42 1.36%Sand-Slime Tailing 0.059 119.0 1.41 0.62 0.80 1 1.06 13.601 189.06 16.96 15 1.51% 2.7 47% 1.96 0.06 1.90 1 0.84 0.05 0.96 1.0 0.048 36.25 53.21 0.081 1.68 0.89 0.24 0.80 1.02 1.0 0.040 3.82 64.78 0.105 2.81 2.24 2 10.58 594 1.8E-03 6.5E+02 2.9E-04 10 0.239 6202 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.52% 0.0025
24.934 5591.31 12.8 0.197 12.0 120.3 52.12 1.54%Sand-Slime Tailing 0.059 119.0 1.42 0.62 0.80 1 1.06 12.734 177.01 15.71 14 1.74% 2.7 47% 1.97 0.07 1.90 1 0.84 0.05 0.96 1.0 0.048 35.81 51.53 0.079 1.64 0.89 0.23 0.80 1.01 1.0 0.040 4.29 67.41 0.108 2.87 2.26 2 10.63 594 1.8E-03 6.5E+02 3.0E-04 10 0.239 6195 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.54% 0.0025
25.098 5591.14 11.7 0.209 10.9 127.8 55.38 1.79%Sand-Slime Tailing 0.059 119.0 1.43 0.63 0.80 1 1.05 11.464 159.35 14.29 13 2.04% 2.8 47% 1.98 0.07 1.91 1 0.83 0.05 0.96 1.0 0.048 35.31 49.61 0.077 1.60 0.89 0.22 0.80 1.01 1.0 0.040 4.93 70.46 0.113 2.96 2.28 2 10.68 594 1.8E-03 6.5E+02 3.0E-04 10 0.239 6189 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.56% 0.0026
25.262 5590.98 11.2 0.195 10.6 97.8 42.36 1.74%Sand-Slime Tailing 0.059 119.0 1.44 0.63 0.81 1 1.05 11.150 154.99 13.69 12 1.99% 2.8 47% 1.99 0.08 1.91 1 0.83 0.05 0.96 1.0 0.048 35.10 48.80 0.076 1.58 0.89 0.21 0.80 1.01 1.0 0.040 5.04 69.04 0.111 2.89 2.24 2 10.73 594 1.8E-03 6.5E+02 3.0E-04 10 0.240 6183 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.58% 0.0026
25.426 5590.81 11.4 0.160 10.8 101.4 43.94 1.41%Sand-Slime Tailing 0.059 119.0 1.45 0.64 0.81 1 1.05 11.236 156.18 13.82 12 1.61% 2.8 47% 2.00 0.08 1.92 1 0.83 0.05 0.96 1.0 0.048 35.15 48.97 0.077 1.59 0.89 0.21 0.80 1.01 1.0 0.040 4.60 63.56 0.104 2.70 2.14 2 10.78 594 1.8E-03 6.5E+02 3.0E-04 10 0.240 6177 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.60% 0.0026
25.590 5590.65 11.2 0.149 10.6 105.8 45.83 1.33%Sand-Slime Tailing 0.059 119.0 1.46 0.64 0.82 1 1.04 10.978 152.60 13.55 12 1.53% 2.8 47% 2.01 0.09 1.92 1 0.83 0.05 0.96 1.0 0.048 35.05 48.60 0.076 1.58 0.88 0.21 0.80 1.01 1.0 0.040 4.58 62.02 0.102 2.63 2.11 2 10.83 594 1.8E-03 6.5E+02 3.0E-04 10 0.240 6171 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.62% 0.0027
25.754 5590.49 11.6 0.159 11.1 86.4 37.44 1.37%Sand-Slime Tailing 0.059 119.0 1.47 0.65 0.82 1 1.04 11.458 159.27 13.96 12 1.57% 2.8 47% 2.02 0.09 1.93 1 0.83 0.05 0.96 1.0 0.048 35.20 49.15 0.077 1.59 0.88 0.22 0.80 1.01 1.0 0.040 4.53 63.18 0.103 2.65 2.12 2 10.88 594 1.8E-03 6.5E+02 3.0E-04 10 0.240 6164 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.64% 0.0027
25.918 5590.32 11.7 0.182 11.0 108.2 46.89 1.56%Sand-Slime Tailing 0.059 119.0 1.48 0.65 0.83 1 1.03 11.356 157.85 14.00 12 1.78% 2.8 47% 2.03 0.10 1.93 1 0.83 0.05 0.96 1.0 0.048 35.21 49.21 0.077 1.59 0.88 0.22 0.80 1.01 1.0 0.041 4.76 66.63 0.108 2.74 2.16 2 10.93 594 1.8E-03 6.5E+02 3.0E-04 10 0.240 6158 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.66% 0.0027
26.082 5590.16 11.7 0.204 11.1 102.1 44.24 1.74%Sand-Slime Tailing 0.059 119.0 1.49 0.66 0.83 1 1.03 11.368 158.02 13.96 12 2.00% 2.8 47% 2.04 0.10 1.94 1 0.83 0.05 0.96 1.0 0.048 35.20 49.16 0.077 1.59 0.88 0.22 0.80 1.01 1.0 0.041 5.00 69.81 0.112 2.82 2.20 2 10.98 594 1.8E-03 6.5E+02 3.1E-04 10 0.240 6152 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.68% 0.0028
26.246 5589.99 11.8 0.197 11.1 100.4 43.51 1.67%Sand-Slime Tailing 0.059 119.0 1.50 0.66 0.84 1 1.02 11.391 158.33 13.97 12 1.92% 2.8 47% 2.05 0.11 1.94 1 0.82 0.05 0.96 1.0 0.048 35.20 49.18 0.077 1.58 0.88 0.22 0.80 1.01 1.0 0.041 4.92 68.75 0.110 2.77 2.18 2 11.03 594 1.8E-03 6.5E+02 3.1E-04 10 0.240 6146 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.70% 0.0028
26.410 5589.83 11.4 0.197 10.8 88.6 38.40 1.73%Sand-Slime Tailing 0.059 119.0 1.51 0.67 0.84 1 1.02 11.016 153.12 13.45 12 2.00% 2.8 47% 2.06 0.11 1.95 1 0.82 0.05 0.96 1.0 0.048 35.02 48.47 0.076 1.57 0.88 0.21 0.80 1.00 1.0 0.041 5.15 69.27 0.111 2.77 2.17 2 11.08 594 1.8E-03 6.5E+02 3.1E-04 10 0.241 6140 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.72% 0.0028
26.574 5589.67 10.5 0.197 10.0 88.3 38.26 1.87%Sand-Slime Tailing 0.059 119.0 1.52 0.67 0.85 1 1.01 10.127 140.77 12.41 11 2.18% 2.9 47% 2.07 0.12 1.95 1 0.82 0.05 0.96 1.0 0.048 34.65 47.07 0.075 1.54 0.88 0.20 0.80 1.00 1.0 0.041 5.67 70.40 0.112 2.79 2.16 2 11.13 594 1.8E-03 6.5E+02 3.1E-04 10 0.241 6134 0.07% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.74% 0.0029
27.740 5588.50 Sand-Slime Tailing 0.059 119.0 2.14 0.14 2.00 1 11.49 594 1.8E-03 6.5E+02 3.2E-04 10 0.242 6068 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.87% 0.0218
Extra layer added to analyze seismic settlement of tailings below the bottom of CPT investigation.
Liquef_SeismicSettle_30Aug2015.xls Page 9 of 29
Energy Fuels Resources (USA) Inc.White Mesa Mill
Seismic Settlement Analyses
Data File: 13-52106_SP2W5-C-BSC-CPT 5604.20 Water surface elevation during CPT investigation (ft 5615.86 Ground Surface Elevation at time of CPT (ft amsl)
Location: White Mesa 2013 CPT Investigation 0.15 5604.20 Water surface elevation at t0 (ft amsl)5626.28 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl)
..\..\..\6.2.3 Field Data\2013 Field Investigation\Conetec Dat 5.5 5589.01 Water surface elevation at t1 (ft amsl) 0.50 Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after plac ###### 5626.03 5625.78 0.50 0.055 110 0.028 0.014 0.00 0.00 0.028 0.014 0.08 508 1.7E-03 4.4E+02 3.0E-06 11 0.068 46696 0.00% 1.20 0.80 0.04% 0.000 0.32 0.133 0.778 0.00% 0.0000
Tailings Sands 1.69 5584.01 Water surface elevation at t2 (ft amsl)3.50 Thickness of Water Storage/Rooting Zone (ft)###### 5624.03 5622.28 3.50 0.054 107 0.215 0.121 0.00 0.00 0.215 0.121 0.69 508 1.7E-03 4.3E+02 2.8E-05 11 0.118 18930 0.00% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
Tailings Sand-Slimes 4.00 Thickness of High Compaction Layer (ft)###### 5620.28 5618.28 4.00 0.060 120 0.454 0.334 0.00 0.00 0.454 0.334 1.83 508 1.9E-03 4.8E+02 6.8E-05 11 0.153 12419 0.01% 0.65 0.75 0.02% 0.000 0.34 0.079 0.765 0.00% 0.0000
Tailings Slimes 1.44 2.42 Thickness of Random/Platform Fill on on top of existing interim cover (ft) ###### 5617.07 5615.86 2.42 0.050 101 0.576 0.515 0.00 0.00 0.576 0.515 2.81 508 1.6E-03 4.0E+02 1.2E-04 11 0.171 10381 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
Interim Cover 0.47 1151.89 Additional Stress due to Final Cover Placement, ΔσFC (psf)
Cells Requiring User Input/Manipulation 2.21 2.21 7.51 5584.01 Elevation of bottom of tailings (liner) (ft amsl)
0.494
rd Cσ Kσ Ka rd Dr f Kσ Ka Avg
(ft) (ft amsl) TSF TSF TSF (ft) PSI (%) (tcf) (pcf) (tsf)(tsf)(tsf) 1=Yes TSF MPa % (tsf)(tsf)(tsf) 1=Yes FoS m
0=No 0=No (ft/sec) (tcf) tsf tsf (%)
0.164 5615.70 4.8 0.029 4.8 1.1 0.49 0.60%Interim Cover 0.050 100.7 0.01 0.00 0.01 0 1.70 8.143 113.19 9.47 580 0.61% 1.2 51% 0.58 0.00 0.58 0 1.00 0.04 1.02 1.0 0.059 33.64 43.12 0.071 1.21 0.98 0.18 0.80 2.53 1.0 0.017 1.00 9.47 0.058 4.26 2.74 2 3.23 594 1.6E-03 5.5E+02 1.0E-04 11 0.177 9851 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
0.328 5615.53 11.7 0.170 11.6 8.2 3.56 1.46%Interim Cover 0.050 100.7 0.02 0.00 0.02 0 1.70 19.737 274.34 23.02 705 1.46% 1.5 51% 0.59 0.00 0.59 0 1.00 0.05 1.02 1.0 0.059 38.40 61.43 0.089 1.52 0.97 0.28 0.80 2.20 1.0 0.019 1.00 23.02 0.069 4.34 2.93 2 3.28 594 1.6E-03 5.5E+02 1.0E-04 11 0.178 9794 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
0.492 5615.37 34.1 0.408 34.1 8.9 3.84 1.20%Interim Cover 0.050 100.7 0.02 0.00 0.02 0 1.70 57.885 804.60 67.34 1375 1.20% 1.3 51% 0.60 0.00 0.60 0 1.00 0.08 1.03 1.0 0.060 53.95 121.29 0.182 3.06 0.97 0.47 0.76 2.32 1.0 0.019 1.00 67.34 0.108 6.40 4.73 2 3.33 594 1.6E-03 5.5E+02 1.1E-04 11 0.178 9738 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
0.656 5615.20 51.6 0.661 51.6 1.4 0.59 1.28%Interim Cover 0.050 100.7 0.03 0.00 0.03 0 1.70 87.686 1218.84 101.86 1560 1.28% 1.4 51% 0.61 0.00 0.61 0 1.00 0.11 1.04 1.0 0.060 66.07 167.92 0.388 6.46 0.97 0.58 0.71 2.59 1.0 0.017 1.00 101.86 0.178 11.62 9.04 2 3.38 594 1.6E-03 5.5E+02 1.1E-04 11 0.179 9683 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
0.820 5615.04 73.2 1.112 73.1 6.6 2.84 1.52%Interim Cover 0.050 100.7 0.04 0.00 0.04 0 1.70 124.304 1727.83 144.45 1770 1.52% 1.4 51% 0.62 0.00 0.62 0 1.00 0.15 1.05 1.0 0.061 81.01 225.47 1.000 16.46 0.97 0.69 0.65 2.87 1.0 0.015 1.00 144.45 0.360 23.84 20.15 2 3.43 594 1.6E-03 5.5E+02 1.1E-04 11 0.179 9629 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
0.984 5614.88 89.2 1.392 89.2 -0.9 -0.37 1.56%Interim Cover 0.050 100.7 0.05 0.00 0.05 0 1.70 151.606 2107.32 176.07 1798 1.56% 1.4 51% 0.63 0.00 0.63 0 1.00 0.20 1.07 1.0 0.062 92.11 268.18 1.000 16.24 0.97 0.77 0.62 2.98 1.0 0.014 1.00 176.07 1.000 62.26 39.25 2 3.48 594 1.6E-03 5.5E+02 1.1E-04 11 0.180 9576 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.148 5614.71 116.0 1.613 115.8 37.9 16.43 1.39%Interim Cover 0.050 100.7 0.06 0.00 0.06 0 1.70 196.792 2735.41 229.03 2005 1.39% 1.4 51% 0.63 0.00 0.63 0 1.00 0.30 1.09 1.0 0.063 110.69 339.72 1.000 15.84 0.97 0.87 0.60 2.95 1.0 0.015 1.00 229.03 1.000 54.71 35.28 2 3.53 594 1.6E-03 5.5E+02 1.1E-04 11 0.181 9524 0.01%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.312 5614.55 135.8 1.481 135.7 12.6 5.44 1.09%Interim Cover 0.050 100.7 0.07 0.00 0.07 0 1.70 230.724 3207.06 268.13 2054 1.09% 1.3 51% 0.64 0.00 0.64 0 1.00 0.30 1.09 1.0 0.063 124.41 392.54 1.000 15.90 0.97 0.95 0.60 2.79 1.0 0.015 1.00 268.13 1.000 65.11 40.50 2 3.58 594 1.6E-03 5.5E+02 1.1E-04 11 0.181 9473 0.01%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.476 5614.38 141.1 2.556 141.0 16.3 7.07 1.81%Interim Cover 0.050 100.7 0.07 0.00 0.07 0 1.70 239.717 3332.07 278.62 1897 1.81% 1.5 51% 0.65 0.00 0.65 0 1.00 0.30 1.08 1.0 0.063 128.10 406.71 1.000 15.95 0.97 0.96 0.60 2.66 1.0 0.016 1.00 278.62 1.000 62.14 39.05 2 3.63 594 1.6E-03 5.5E+02 1.1E-04 11 0.182 9423 0.01%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.640 5614.22 158.3 2.323 158.2 7.6 3.31 1.47%Interim Cover 0.050 100.7 0.08 0.00 0.08 0 1.70 268.974 3738.74 312.49 1915 1.47% 1.4 51% 0.66 0.00 0.66 0 1.00 0.30 1.08 1.0 0.062 139.98 452.47 1.000 16.01 0.97 1.02 0.60 2.55 1.0 0.017 1.00 312.49 1.000 243.22 129.62 2 3.68 594 1.6E-03 5.5E+02 1.2E-04 11 0.182 9373 0.02%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.804 5614.06 219.1 2.632 219.1 7.2 3.12 1.20%Interim Cover 0.050 100.7 0.09 0.00 0.09 0 1.70 372.453 5177.10 432.67 2410 1.20% 1.3 51% 0.67 0.00 0.67 0 1.00 0.30 1.08 1.0 0.062 182.16 614.83 1.000 16.07 0.97 1.20 0.60 2.46 1.0 0.017 1.00 432.67 1.000 221.20 118.63 2 3.73 594 1.6E-03 5.5E+02 1.2E-04 11 0.183 9325 0.02%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.968 5613.89 216.1 2.814 216.0 10.4 4.50 1.30%Interim Cover 0.050 100.7 0.10 0.00 0.10 0 1.70 367.251 5104.79 426.67 2179 1.30% 1.3 51% 0.68 0.00 0.68 0 1.00 0.30 1.07 1.0 0.062 180.05 606.72 1.000 16.13 0.97 1.19 0.60 2.37 1.0 0.018 1.00 426.67 1.000 202.84 109.49 2 3.78 594 1.6E-03 5.5E+02 1.2E-04 11 0.184 9277 0.02%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.133 5613.73 184.6 2.875 184.5 8.4 3.65 1.56%Interim Cover 0.050 100.7 0.11 0.00 0.11 0 1.70 313.718 4360.68 364.47 1718 1.56% 1.4 51% 0.68 0.00 0.68 0 1.00 0.30 1.07 1.0 0.062 158.22 522.69 1.000 16.20 0.97 1.10 0.60 2.30 1.0 0.019 1.00 364.47 1.000 187.31 101.76 2 3.83 594 1.6E-03 5.5E+02 1.2E-04 11 0.184 9231 0.02%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.297 5613.56 191.7 3.125 191.7 11.1 4.81 1.63%Interim Cover 0.050 100.7 0.12 0.00 0.12 0 1.70 325.524 4524.79 378.21 1657 1.63% 1.5 51% 0.69 0.00 0.69 0 1.00 0.30 1.07 1.0 0.061 163.05 541.26 1.000 16.27 0.97 1.12 0.60 2.23 1.0 0.019 1.00 378.21 1.000 174.00 95.14 2 3.88 594 1.6E-03 5.5E+02 1.2E-04 11 0.185 9185 0.02%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.461 5613.40 166.4 3.732 166.3 8.8 3.82 2.24%Interim Cover 0.050 100.7 0.12 0.00 0.12 0 1.67 277.345 3855.09 322.23 1342 2.24% 1.6 51% 0.70 0.00 0.70 0 1.00 0.30 1.06 1.0 0.061 143.40 465.63 1.000 16.34 0.97 1.04 0.60 2.17 1.0 0.020 1.00 322.23 1.000 162.47 89.40 2 3.93 594 1.6E-03 5.5E+02 1.2E-04 11 0.185 9139 0.02%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.625 5613.24 152.8 3.596 152.7 5.5 2.40 2.35%Interim Cover 0.050 100.7 0.13 0.00 0.13 0 1.64 250.398 3480.54 290.89 1155 2.36% 1.6 51% 0.71 0.00 0.71 0 1.00 0.30 1.06 1.0 0.061 132.40 423.29 1.000 16.41 0.97 0.98 0.60 2.12 1.0 0.020 1.00 290.50 1.000 152.37 84.39 2 3.98 594 1.6E-03 5.5E+02 1.3E-04 11 0.186 9095 0.02%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.789 5613.07 141.7 3.046 141.7 2.9 1.26 2.15%Interim Cover 0.050 100.7 0.14 0.00 0.14 0 1.61 228.613 3177.71 265.55 1008 2.15% 1.6 51% 0.72 0.00 0.72 0 0.99 0.30 1.06 1.0 0.061 123.51 389.07 1.000 16.48 0.97 0.94 0.60 2.07 1.0 0.021 1.00 265.55 1.000 143.47 79.97 2 4.03 594 1.6E-03 5.5E+02 1.3E-04 11 0.186 9051 0.02%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.953 5612.91 135.3 2.327 135.3 3.0 1.28 1.72%Interim Cover 0.050 100.7 0.15 0.00 0.15 0 1.60 216.180 3004.91 251.11 909 1.72% 1.5 51% 0.72 0.00 0.72 0 0.99 0.30 1.05 1.0 0.060 118.44 369.56 1.000 16.55 0.97 0.91 0.60 2.02 1.0 0.021 1.00 251.11 1.000 135.55 76.05 2 4.08 594 1.6E-03 5.5E+02 1.3E-04 11 0.187 9008 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
3.117 5612.74 130.1 2.548 130.1 2.3 0.98 1.96%Interim Cover 0.050 100.7 0.16 0.00 0.16 0 1.60 208.503 2898.19 242.19 828 1.96% 1.6 51% 0.73 0.00 0.73 0 0.99 0.30 1.05 1.0 0.060 115.31 357.50 1.000 16.62 0.97 0.90 0.60 1.98 1.0 0.022 1.00 242.19 1.000 128.47 72.54 2 4.13 495 1.6E-03 3.8E+02 1.9E-04 11 0.187 8966 0.03% 2.00 0.65 0.03% 0.001 0.34 0.079 0.765 0.21% 0.0003
3.281 5612.58 111.7 2.753 111.7 2.9 1.27 2.46%Sand-Slime Tailing 0.047 93.3 0.16 0.00 0.16 0 1.67 186.121 2587.09 216.20 678 2.47% 1.7 47% 0.74 0.00 0.74 0 0.99 0.30 1.05 1.0 0.060 106.13 322.33 1.000 16.68 0.97 0.85 0.60 1.94 1.0 0.022 1.06 229.38 1.000 122.54 69.61 2 4.18 495 1.4E-03 3.5E+02 2.0E-04 10 0.188 9165 0.04%2.00 0.65 0.03% 0.004 0.34 0.079 0.765 0.66% 0.0011
3.445 5612.42 108.0 2.637 108.0 2.3 1.00 2.44%Sand-Slime Tailing 0.047 93.3 0.17 0.00 0.17 0 1.67 180.028 2502.39 209.12 626 2.45% 1.7 47% 0.75 0.00 0.75 0 0.99 0.29 1.04 1.0 0.060 103.64 312.76 1.000 16.76 0.97 0.83 0.60 1.90 1.0 0.022 1.07 223.18 1.000 117.15 66.95 2 4.23 495 1.4E-03 3.5E+02 2.1E-04 10 0.189 9126 0.04%2.00 0.65 0.03% 0.005 0.34 0.079 0.765 0.70% 0.0011
3.609 5612.25 115.0 1.758 115.0 1.5 0.66 1.53%Sand Tailings 0.051 102.8 0.18 0.00 0.18 0 1.62 186.160 2587.62 216.23 635 1.53% 1.6 18% 0.76 0.00 0.76 0 0.99 0.30 1.04 1.0 0.059 77.37 293.60 1.000 16.81 0.97 0.85 0.60 1.87 1.0 0.023 1.00 216.23 1.000 111.72 64.27 2 4.28 495 1.6E-03 3.9E+02 1.9E-04 0 0.193 11440 0.04%2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.04% 0.0001
3.773 5612.09 130.6 2.562 130.6 2.0 0.88 1.96%Sand Tailings 0.051 102.8 0.19 0.00 0.19 0 1.54 201.640 2802.79 234.22 690 1.96% 1.6 18% 0.77 0.00 0.77 0 0.99 0.30 1.04 1.0 0.059 81.97 316.18 1.000 16.88 0.97 0.88 0.60 1.83 1.0 0.023 1.00 234.22 1.000 106.79 61.83 2 4.33 495 1.6E-03 3.9E+02 1.9E-04 0 0.194 11388 0.04%2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.04% 0.0001
3.937 5611.92 134.1 2.416 134.1 2.0 0.88 1.80%Sand Tailings 0.051 102.8 0.20 0.00 0.20 0 1.52 203.635 2830.52 236.53 678 1.80% 1.6 18% 0.77 0.00 0.77 0 0.99 0.30 1.03 1.0 0.059 82.56 319.09 1.000 16.95 0.97 0.89 0.60 1.80 1.0 0.024 1.00 236.53 1.000 102.27 59.61 2 4.38 495 1.6E-03 3.9E+02 1.9E-04 0 0.194 11337 0.04%2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.05% 0.0001
4.101 5611.76 107.5 2.141 107.5 1.8 0.76 1.99%Sand Tailings 0.051 102.8 0.21 0.00 0.21 0 1.60 172.196 2393.53 200.02 521 2.00% 1.7 18% 0.78 0.00 0.78 0 0.99 0.26 1.03 1.0 0.059 73.22 273.24 1.000 17.08 0.97 0.82 0.60 1.77 1.0 0.024 1.04 207.11 1.000 98.12 57.60 2 4.43 495 1.6E-03 3.9E+02 1.9E-04 0 0.195 11287 0.04%2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.05% 0.0001
4.265 5611.59 96.2 1.939 96.1 5.9 2.54 2.02%Sand-Slime Tailing 0.047 93.3 0.21 0.00 0.21 0 1.64 157.282 2186.22 182.74 449 2.02% 1.7 47% 0.79 0.00 0.79 0 0.99 0.22 1.02 1.0 0.058 94.39 277.14 1.000 17.21 0.97 0.78 0.61 1.72 1.0 0.025 1.06 193.46 1.000 94.64 55.92 2 4.48 495 1.4E-03 3.5E+02 2.2E-04 10 0.191 8925 0.04% 2.00 0.65 0.03% 0.006 0.34 0.079 0.765 0.88% 0.0014
4.429 5611.43 67.8 1.878 67.8 0.9 0.39 2.77%Sand-Slime Tailing 0.047 93.3 0.22 0.00 0.22 0 1.70 115.175 1600.93 133.78 305 2.78% 1.9 47% 0.80 0.00 0.80 0 0.99 0.14 1.01 1.0 0.058 77.22 211.00 1.000 17.36 0.97 0.67 0.67 1.57 1.0 0.027 1.22 163.57 1.000 91.41 54.38 2 4.53 495 1.4E-03 3.5E+02 2.2E-04 10 0.192 8889 0.04% 2.00 0.65 0.03% 0.006 0.34 0.079 0.765 0.91% 0.0015
4.593 5611.27 82.0 1.346 81.9 5.5 2.36 1.64%Sand Tailings 0.051 102.8 0.23 0.00 0.23 0 1.67 136.924 1903.24 159.09 356 1.65% 1.7 18% 0.81 0.00 0.81 0 0.98 0.17 1.01 1.0 0.058 62.76 221.86 1.000 17.36 0.96 0.73 0.64 1.62 1.0 0.026 1.04 165.68 1.000 88.09 52.73 2 4.58 495 1.6E-03 3.9E+02 2.0E-04 0 0.196 11149 0.05%2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.06% 0.0001
4.757 5611.10 80.0 1.313 80.0 1.7 0.75 1.64%Sand Tailings 0.051 102.8 0.24 0.00 0.24 0 1.66 133.066 1849.61 154.57 335 1.65% 1.7 18% 0.81 0.00 0.81 0 0.98 0.17 1.01 1.0 0.057 61.60 216.17 1.000 17.42 0.96 0.72 0.64 1.59 1.0 0.027 1.05 162.43 1.000 85.00 51.21 2 4.63 495 1.6E-03 3.9E+02 2.0E-04 0 0.196 11102 0.05%2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.06% 0.0001
4.921 5610.94 93.3 1.401 93.3 3.1 1.33 1.50%Sand Tailings 0.051 102.8 0.25 0.00 0.25 0 1.59 147.935 2056.29 171.85 377 1.51% 1.7 18% 0.82 0.00 0.82 0 0.98 0.20 1.01 1.0 0.057 66.02 237.88 1.000 17.44 0.96 0.76 0.62 1.61 1.0 0.026 1.01 173.52 1.000 82.13 49.78 2 4.68 495 1.6E-03 3.9E+02 2.1E-04 0 0.197 11055 0.05%2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.07% 0.0001
5.085 5610.77 97.4 1.343 97.4 3.2 1.40 1.38%Sand Tailings 0.051 102.8 0.26 0.00 0.26 0 1.56 151.462 2105.33 175.95 381 1.38% 1.6 18% 0.83 0.00 0.83 0 0.98 0.20 1.01 1.0 0.057 67.07 243.02 1.000 17.49 0.96 0.77 0.62 1.59 1.0 0.027 1.00 175.95 1.000 79.44 48.47 2 4.73 495 1.6E-03 3.9E+02 2.1E-04 0 0.197 11009 0.05%2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.07% 0.0001
5.249 5610.61 63.5 1.284 63.5 0.9 0.40 2.02%Sand-Slime Tailing 0.047 93.3 0.26 0.00 0.26 0 1.70 107.951 1500.52 125.39 241 2.03% 1.9 47% 0.84 0.00 0.84 0 0.98 0.13 1.00 1.0 0.057 74.28 199.67 1.000 17.57 0.96 0.65 0.68 1.47 1.0 0.029 1.17 146.26 0.371 28.62 23.10 2 4.78 495 1.4E-03 3.5E+02 2.3E-04 10 0.194 8704 0.05% 2.00 0.65 0.03% 0.007 0.34 0.079 0.765 1.09% 0.0018
5.413 5610.45 54.2 0.816 54.2 -0.6 -0.24 1.51%Sand-Slime Tailing 0.047 93.3 0.27 0.00 0.27 0 1.70 92.072 1279.80 106.93 199 1.51% 1.8 47% 0.85 0.00 0.85 0 0.98 0.11 1.00 1.0 0.057 67.80 174.73 0.460 8.11 0.96 0.60 0.70 1.41 1.0 0.030 1.13 120.33 0.242 18.15 13.13 2 4.83 495 1.4E-03 3.5E+02 2.3E-04 10 0.195 8672 0.05% 2.00 0.65 0.03% 0.007 0.34 0.079 0.765 1.12% 0.0018
5.577 5610.28 38.7 0.729 38.7 -0.7 -0.30 1.88%Sand-Slime Tailing 0.047 93.3 0.28 0.00 0.28 0 1.70 65.841 915.19 76.46 138 1.90% 2.0 47% 0.85 0.00 0.85 0 0.98 0.09 1.00 1.0 0.057 57.12 133.58 0.213 3.75 0.96 0.50 0.75 1.33 1.0 0.032 1.30 99.66 0.172 12.55 8.15 2 4.88 495 1.4E-03 3.5E+02 2.3E-04 10 0.195 8639 0.05% 2.00 0.65 0.03% 0.008 0.34 0.079 0.765 1.15% 0.0019
5.741 5610.12 35.6 0.520 35.6 0.1 0.04 1.46%Sand-Slime Tailing 0.047 93.3 0.29 0.00 0.29 0 1.70 60.520 841.23 70.29 124 1.47% 2.0 47% 0.86 0.00 0.86 0 0.98 0.08 1.00 1.0 0.057 54.95 125.25 0.191 3.38 0.96 0.48 0.76 1.31 1.0 0.032 1.25 87.61 0.143 10.13 6.75 2 4.93 495 1.4E-03 3.5E+02 2.4E-04 10 0.196 8608 0.05% 2.00 0.65 0.03% 0.008 0.34 0.079 0.765 1.19% 0.0019
5.905 5609.95 32.6 0.386 32.6 -0.6 -0.28 1.18%Sand-Slime Tailing 0.047 93.3 0.29 0.00 0.29 0 1.70 55.420 770.34 64.36 110 1.19% 1.9 47% 0.87 0.00 0.87 0 0.98 0.08 1.00 1.0 0.056 52.87 117.23 0.174 3.08 0.96 0.46 0.77 1.28 1.0 0.033 1.22 78.38 0.125 8.64 5.86 2 4.98 495 1.4E-03 3.5E+02 2.4E-04 10 0.196 8576 0.05% 2.00 0.65 0.03% 0.008 0.34 0.079 0.765 1.22% 0.0020
6.069 5609.79 31.4 0.323 31.4 -0.6 -0.25 1.03%Sand-Slime Tailing 0.047 93.3 0.30 0.00 0.30 0 1.70 53.346 741.51 61.95 103 1.04% 1.9 47% 0.88 0.00 0.88 0 0.98 0.08 1.00 1.0 0.056 52.03 113.98 0.167 2.97 0.96 0.45 0.77 1.27 1.0 0.033 1.20 74.27 0.118 7.97 5.47 2 5.03 495 1.4E-03 3.5E+02 2.4E-04 10 0.197 8545 0.05% 2.00 0.65 0.03% 0.008 0.34 0.079 0.765 1.25% 0.0020
6.234 5609.63 27.6 0.437 27.6 -0.4 -0.19 1.59%Sand-Slime Tailing 0.047 93.3 0.31 0.00 0.31 0 1.70 46.852 651.24 54.41 88 1.60% 2.1 47% 0.88 0.00 0.88 0 0.98 0.07 1.00 1.0 0.056 49.38 103.79 0.149 2.65 0.96 0.43 0.79 1.24 1.0 0.034 1.43 77.86 0.124 8.16 5.40 2 5.08 495 1.4E-03 3.5E+02 2.4E-04 10 0.197 8514 0.05% 2.00 0.65 0.03% 0.008 0.34 0.079 0.765 1.28% 0.0021
6.398 5609.46 19.4 0.406 19.4 -0.6 -0.24 2.09%Sand-Slime Tailing 0.047 93.3 0.32 0.00 0.32 0 1.70 32.963 458.19 38.28 60 2.13% 2.3 47% 0.89 0.00 0.89 0 0.97 0.06 1.00 1.0 0.056 43.73 82.00 0.115 2.05 0.96 0.36 0.80 1.22 1.0 0.035 1.92 73.58 0.117 7.52 4.79 2 5.13 495 1.4E-03 3.5E+02 2.5E-04 10 0.197 8484 0.05% 2.00 0.65 0.03% 0.009 0.34 0.079 0.765 1.31% 0.0022
6.562 5609.30 22.0 0.353 22.0 0.9 0.39 1.60%Sand-Slime Tailing 0.047 93.3 0.32 0.00 0.32 0 1.70 37.400 519.86 43.45 67 1.63% 2.2 47% 0.90 0.00 0.90 0 0.97 0.07 1.00 1.0 0.056 45.54 88.99 0.125 2.24 0.96 0.38 0.80 1.22 1.0 0.035 1.62 70.38 0.112 7.06 4.65 2 5.18 495 1.4E-03 3.5E+02 2.5E-04 10 0.198 8454 0.05% 2.00 0.65 0.03% 0.009 0.34 0.079 0.765 1.34% 0.0022
6.726 5609.13 32.3 0.314 32.3 1.2 0.51 0.97%Sand-Slime Tailing 0.047 93.3 0.33 0.00 0.33 0 1.70 54.961 763.96 63.85 97 0.98% 1.9 47% 0.91 0.00 0.91 0 0.97 0.08 1.00 1.0 0.056 52.69 116.54 0.172 3.08 0.96 0.46 0.77 1.25 1.0 0.034 1.21 76.95 0.122 7.51 5.29 2 5.23 495 1.4E-03 3.5E+02 2.5E-04 10 0.198 8424 0.05% 2.00 0.65 0.03% 0.009 0.34 0.079 0.765 1.38% 0.0023
6.890 5608.97 36.5 0.296 36.5 0.3 0.11 0.81%Sand Tailings 0.051 102.8 0.34 0.00 0.34 0 1.70 61.932 860.85 71.93 106 0.82% 1.8 18% 0.92 0.00 0.92 0 0.97 0.09 0.99 1.0 0.056 40.48 112.41 0.164 2.94 0.96 0.49 0.76 1.26 1.0 0.034 1.13 81.47 0.130 7.80 5.37 2 5.28 495 1.6E-03 3.9E+02 2.3E-04 0 0.202 10578 0.06% 2.20 1.00 0.03% 0.001 0.34 0.079 0.765 0.11% 0.0002
7.054 5608.81 37.5 0.279 37.5 0.2 0.10 0.74%Sand Tailings 0.051 102.8 0.35 0.00 0.35 0 1.67 62.634 870.61 72.75 107 0.75% 1.8 18% 0.92 0.00 0.92 0 0.97 0.09 0.99 1.0 0.056 40.69 113.44 0.166 2.98 0.96 0.49 0.75 1.25 1.0 0.034 1.11 81.07 0.130 7.57 5.28 2 5.33 495 1.6E-03 3.9E+02 2.3E-04 0 0.202 10539 0.06% 2.20 1.00 0.03% 0.001 0.34 0.079 0.765 0.11% 0.0002
7.218 5608.64 38.6 0.335 38.6 0.2 0.10 0.87%Sand Tailings 0.051 102.8 0.36 0.00 0.36 0 1.64 63.426 881.62 73.67 107 0.88% 1.9 18% 0.93 0.00 0.93 0 0.97 0.09 0.99 1.0 0.056 40.92 114.59 0.169 3.03 0.96 0.50 0.75 1.24 1.0 0.034 1.15 84.37 0.136 7.75 5.39 2 5.38 495 1.6E-03 3.9E+02 2.3E-04 0 0.203 10500 0.06% 2.20 1.00 0.03% 0.001 0.34 0.079 0.765 0.12% 0.0002
7.382 5608.48 38.6 0.379 38.6 0.0 0.02 0.98%Sand-Slime Tailing 0.047 93.3 0.36 0.00 0.36 0 1.63 62.785 872.71 72.92 105 0.99% 1.9 47% 0.94 0.00 0.94 0 0.97 0.09 0.99 1.0 0.056 55.88 128.80 0.200 3.60 0.96 0.49 0.75 1.24 1.0 0.034 1.18 86.12 0.139 7.79 5.70 2 5.43 495 1.4E-03 3.5E+02 2.6E-04 10 0.200 8301 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.51% 0.0025
7.546 5608.31 38.2 0.414 38.2 -0.4 -0.19 1.08%Sand-Slime Tailing 0.047 93.3 0.37 0.00 0.37 0 1.61 61.540 855.40 71.47 102 1.10% 1.9 47% 0.95 0.00 0.95 0 0.97 0.08 0.99 1.0 0.055 55.37 126.84 0.195 3.52 0.96 0.49 0.76 1.23 1.0 0.034 1.22 87.14 0.142 7.75 5.63 2 5.48 495 1.4E-03 3.5E+02 2.6E-04 10 0.201 8273 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.54% 0.0025
7.710 5608.15 37.4 0.416 37.4 -0.5 -0.20 1.11%Sand-Slime Tailing 0.047 93.3 0.38 0.00 0.38 0 1.60 59.889 832.45 69.55 97 1.12% 2.0 47% 0.96 0.00 0.96 0 0.97 0.08 0.99 1.0 0.055 54.69 124.25 0.189 3.41 0.96 0.48 0.76 1.22 1.0 0.035 1.24 86.34 0.140 7.51 5.46 2 5.53 495 1.4E-03 3.5E+02 2.6E-04 10 0.201 8245 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.57% 0.0026
7.874 5607.99 36.6 0.415 36.6 -0.5 -0.20 1.13%Sand-Slime Tailing 0.047 93.3 0.39 0.00 0.39 0 1.59 58.233 809.43 67.63 94 1.15% 2.0 47% 0.96 0.00 0.96 0 0.96 0.08 0.99 1.0 0.055 54.02 121.65 0.183 3.31 0.96 0.47 0.76 1.21 1.0 0.035 1.26 85.43 0.138 7.26 5.29 2 5.58 495 1.4E-03 3.5E+02 2.6E-04 10 0.201 8218 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.61% 0.0026
8.038 5607.82 34.6 0.402 34.6 -0.5 -0.22 1.16%Sand-Slime Tailing 0.047 93.3 0.40 0.00 0.40 0 1.59 54.871 762.70 63.72 87 1.18% 2.0 47% 0.97 0.00 0.97 0 0.96 0.08 0.99 1.0 0.055 52.65 116.37 0.172 3.12 0.96 0.46 0.77 1.20 1.0 0.035 1.30 83.14 0.133 6.89 5.01 2 5.63 495 1.4E-03 3.5E+02 2.7E-04 10 0.202 8191 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.64% 0.0027
8.202 5607.66 33.4 0.283 33.5 -0.5 -0.20 0.85%Sand-Slime Tailing 0.047 93.3 0.40 0.00 0.40 0 1.58 52.769 733.49 61.28 82 0.86% 1.9 47% 0.98 0.00 0.98 0 0.96 0.08 0.99 1.0 0.055 51.79 113.08 0.166 3.01 0.96 0.45 0.77 1.19 1.0 0.036 1.23 75.08 0.119 6.05 4.53 2 5.68 495 1.4E-03 3.5E+02 2.7E-04 10 0.202 8165 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.67% 0.0027
8.366 5607.49 34.9 0.300 34.9 -0.5 -0.22 0.86%Sand-Slime Tailing 0.047 93.3 0.41 0.00 0.41 0 1.55 54.238 753.90 62.99 84 0.87% 1.9 47% 0.99 0.00 0.99 0 0.96 0.08 0.99 1.0 0.055 52.39 115.38 0.170 3.09 0.96 0.46 0.77 1.19 1.0 0.036 1.22 76.88 0.122 6.08 4.59 2 5.73 495 1.4E-03 3.5E+02 2.7E-04 10 0.203 8138 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.70% 0.0028
8.530 5607.33 35.7 0.323 35.7 1.0 0.45 0.91%Sand-Slime Tailing 0.047 93.3 0.42 0.00 0.42 0 1.53 54.753 761.06 63.60 84 0.92% 1.9 47% 0.99 0.00 0.99 0 0.96 0.08 0.99 1.0 0.055 52.61 116.21 0.172 3.13 0.96 0.46 0.77 1.18 1.0 0.036 1.23 78.46 0.125 6.11 4.62 2 5.78 495 1.4E-03 3.5E+02 2.7E-04 10 0.203 8112 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.73% 0.0028
8.694 5607.17 37.7 0.356 37.7 0.3 0.14 0.95%Sand-Slime Tailing 0.047 93.3 0.43 0.00 0.43 0 1.51 56.872 790.53 66.06 87 0.96% 1.9 47% 1.00 0.00 1.00 0 0.96 0.08 0.99 1.0 0.055 53.47 119.53 0.179 3.26 0.96 0.47 0.77 1.18 1.0 0.036 1.23 81.42 0.130 6.25 4.75 2 5.83 495 1.4E-03 3.5E+02 2.8E-04 10 0.203 8086 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.76% 0.0029
8.858 5607.00 39.5 0.390 39.5 0.3 0.12 0.99%Sand-Slime Tailing 0.047 93.3 0.43 0.00 0.43 0 1.49 58.703 815.97 68.18 90 1.00% 1.9 47% 1.01 0.00 1.01 0 0.96 0.08 0.99 1.0 0.055 54.21 122.40 0.185 3.38 0.96 0.48 0.76 1.18 1.0 0.036 1.23 84.20 0.136 6.39 4.89 2 5.88 495 1.4E-03 3.5E+02 2.8E-04 10 0.204 8061 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.80% 0.0029
9.022 5606.84 40.6 0.422 40.6 0.3 0.12 1.04%Sand-Slime Tailing 0.047 93.3 0.44 0.00 0.44 0 1.47 59.660 829.28 69.29 91 1.05% 2.0 47% 1.02 0.00 1.02 0 0.96 0.08 0.99 1.0 0.055 54.60 123.90 0.188 3.45 0.95 0.48 0.76 1.17 1.0 0.036 1.25 86.34 0.140 6.49 4.97 2 5.93 495 1.4E-03 3.5E+02 2.8E-04 10 0.204 8036 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.83% 0.0030
9.186 5606.67 38.9 0.458 38.9 0.2 0.10 1.18%Sand-Slime Tailing 0.047 93.3 0.45 0.00 0.45 0 1.46 57.008 792.41 66.21 86 1.19% 2.0 47% 1.02 0.00 1.02 0 0.96 0.08 0.99 1.0 0.055 53.52 119.74 0.179 3.28 0.95 0.47 0.77 1.17 1.0 0.036 1.31 86.94 0.141 6.44 4.86 2 5.98 495 1.4E-03 3.5E+02 2.8E-04 10 0.204 8011 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.86% 0.0030
9.350 5606.51 35.6 0.461 35.6 0.2 0.10 1.30%Sand-Slime Tailing 0.047 93.3 0.46 0.00 0.46 0 1.47 52.127 724.56 60.54 77 1.31% 2.1 47% 1.03 0.00 1.03 0 0.96 0.08 0.99 1.0 0.054 51.54 112.08 0.164 3.01 0.95 0.45 0.78 1.15 1.0 0.036 1.41 85.30 0.138 6.18 4.59 2 6.03 460 1.4E-03 3.1E+02 3.3E-04 10 0.205 7986 0.10% 2.00 0.65 0.03% 0.018 0.34 0.079 0.765 2.83% 0.0046
9.514 5606.35 32.5 0.457 32.5 -0.1 -0.05 1.41%Sand-Slime Tailing 0.047 93.3 0.46 0.00 0.46 0 1.47 47.683 662.79 55.38 69 1.43% 2.1 47% 1.04 0.00 1.04 0 0.95 0.07 0.99 1.0 0.054 49.72 105.10 0.151 2.78 0.95 0.43 0.79 1.14 1.0 0.037 1.52 84.00 0.135 5.96 4.37 2 6.08 460 1.4E-03 3.1E+02 3.3E-04 10 0.205 7962 0.11% 2.00 0.65 0.03% 0.019 0.34 0.079 0.765 2.87% 0.0047
9.678 5606.18 26.9 0.454 26.9 -0.5 -0.21 1.69%Sand-Slime Tailing 0.047 93.3 0.47 0.00 0.47 0 1.48 39.847 553.87 46.27 56 1.72% 2.3 47% 1.05 0.00 1.05 0 0.95 0.07 0.99 1.0 0.054 46.53 92.81 0.131 2.41 0.95 0.39 0.80 1.13 1.0 0.037 1.81 83.75 0.135 5.85 4.13 2 6.13 460 1.4E-03 3.1E+02 3.3E-04 10 0.206 7938 0.11% 2.00 0.65 0.03% 0.019 0.34 0.079 0.765 2.91% 0.0048
9.842 5606.02 18.0 0.256 18.0 -0.5 -0.21 1.42%Sand-Slime Tailing 0.047 93.3 0.48 0.00 0.48 0 1.52 27.373 380.49 31.79 37 1.46% 2.4 47% 1.06 0.00 1.06 0 0.95 0.06 0.99 1.0 0.054 41.45 73.24 0.104 1.91 0.95 0.33 0.80 1.12 1.0 0.037 2.15 68.25 0.110 4.69 3.30 2 6.18 460 1.4E-03 3.1E+02 3.4E-04 10 0.206 7914 0.11% 2.00 0.65 0.03% 0.019 0.34 0.079 0.765 2.96% 0.0049
10.006 5605.85 15.0 0.216 15.1 -0.5 -0.21 1.44%Sand-Slime Tailing 0.047 93.3 0.49 0.00 0.49 0 1.53 23.015 319.91 26.73 30 1.48% 2.4 47% 1.06 0.00 1.06 0 0.95 0.06 0.99 1.0 0.054 39.67 66.40 0.095 1.75 0.95 0.30 0.80 1.12 1.0 0.037 2.45 65.38 0.106 4.46 3.11 2 6.23 460 1.4E-03 3.1E+02 3.4E-04 10 0.206 7890 0.11% 2.00 0.65 0.03% 0.020 0.34 0.079 0.765 3.00% 0.0049
10.170 5605.69 15.7 0.118 15.7 0.9 0.39 0.75%Sand-Slime Tailing 0.047 93.3 0.49 0.00 0.49 0 1.51 23.659 328.86 27.49 31 0.78% 2.3 47% 1.07 0.00 1.07 0 0.95 0.06 0.99 1.0 0.054 39.94 67.43 0.096 1.78 0.95 0.30 0.80 1.12 1.0 0.038 1.86 51.18 0.092 3.84 2.81 2 6.28 460 1.4E-03 3.1E+02 3.4E-04 10 0.207 7867 0.11% 2.00 0.65 0.03% 0.020 0.34 0.079 0.765 3.05% 0.0050
10.335 5605.53 12.4 0.142 12.4 0.4 0.18 1.15%Sand-Slime Tailing 0.047 93.3 0.50 0.00 0.50 0 1.52 18.795 261.25 21.83 24 1.20% 2.5 47% 1.08 0.00 1.08 0 0.95 0.05 0.99 1.0 0.054 37.96 59.79 0.088 1.62 0.95 0.27 0.80 1.11 1.0 0.038 2.60 56.78 0.097 3.96 2.79 2 6.33 460 1.4E-03 3.1E+02 3.4E-04 10 0.207 7843 0.12% 2.00 0.65 0.03% 0.020 0.34 0.079 0.765 3.09% 0.0051
10.499 5605.36 10.8 0.099 10.7 4.9 2.13 0.92%Sand-Slime Tailing 0.047 93.3 0.51 0.00 0.51 0 1.51 16.147 224.44 18.81 20 0.97% 2.5 47% 1.09 0.00 1.09 0 0.95 0.05 0.99 1.0 0.054 36.90 55.70 0.083 1.54 0.95 0.25 0.80 1.11 1.0 0.038 2.67 50.18 0.092 3.69 2.62 2 6.38 460 1.4E-03 3.1E+02 3.5E-04 10 0.208 7820 0.12% 2.00 0.65 0.03% 0.021 0.34 0.079 0.765 3.14% 0.0051
10.663 5605.20 14.4 0.173 14.4 9.8 4.23 1.20%Sand-Slime Tailing 0.047 93.3 0.52 0.00 0.52 0 1.47 21.120 293.57 24.63 27 1.24% 2.4 47% 1.09 0.00 1.09 0 0.95 0.06 0.99 1.0 0.054 38.94 63.57 0.092 1.70 0.95 0.29 0.80 1.11 1.0 0.038 2.43 59.84 0.100 3.97 2.83 2 6.43 460 1.4E-03 3.1E+02 3.5E-04 10 0.208 7798 0.12% 2.00 0.65 0.03% 0.021 0.34 0.079 0.765 3.18% 0.0052
10.827 5605.03 12.7 0.151 12.7 5.4 2.33 1.19%Sand-Slime Tailing 0.047 93.3 0.53 0.00 0.53 0 1.47 18.646 259.18 21.71 23 1.24% 2.5 47% 1.10 0.00 1.10 0 0.95 0.05 0.99 1.0 0.054 37.92 59.63 0.087 1.62 0.95 0.27 0.80 1.10 1.0 0.038 2.67 57.90 0.098 3.84 2.73 2 6.48 460 1.4E-03 3.1E+02 3.5E-04 10 0.208 7775 0.12% 2.00 0.65 0.03% 0.021 0.34 0.079 0.765 3.23% 0.0053
10.991 5604.87 19.4 0.189 19.4 5.3 2.31 0.97%Sand-Slime Tailing 0.047 93.3 0.53 0.00 0.53 0 1.41 27.383 380.62 31.86 35 1.00% 2.3 47% 1.11 0.00 1.11 0 0.94 0.06 0.98 1.0 0.054 41.47 73.33 0.104 1.93 0.95 0.33 0.80 1.10 1.0 0.038 1.87 59.57 0.100 3.84 2.89 2 6.53 460 1.4E-03 3.1E+02 3.5E-04 10 0.209 7753 0.12% 2.00 0.65 0.03% 0.021 0.34 0.079 0.765 3.27% 0.0054
11.155 5604.71 14.8 0.188 14.8 2.4 1.02 1.27%Sand-Slime Tailing 0.047 93.3 0.54 0.00 0.54 0 1.42 21.005 291.97 24.42 26 1.32% 2.4 47% 1.12 0.00 1.12 0 0.94 0.06 0.99 1.0 0.054 38.87 63.29 0.092 1.70 0.95 0.29 0.80 1.10 1.0 0.038 2.53 61.68 0.102 3.87 2.79 2 6.58 460 1.4E-03 3.1E+02 3.6E-04 10 0.209 7731 0.12% 2.00 0.65 0.03% 0.022 0.34 0.079 0.765 3.32% 0.0054
11.319 5604.54 12.2 0.105 12.1 2.4 1.02 0.86%Sand-Slime Tailing 0.047 93.3 0.55 0.00 0.55 0 1.42 17.280 240.19 20.09 21 0.90% 2.4 47% 1.12 0.00 1.12 0 0.94 0.05 0.99 1.0 0.054 37.35 57.44 0.085 1.58 0.95 0.26 0.80 1.09 1.0 0.038 2.51 50.41 0.092 3.45 2.52 2 6.63 460 1.4E-03 3.1E+02 3.6E-04 10 0.209 7709 0.13% 2.00 0.65 0.03% 0.022 0.34 0.079 0.765 3.37% 0.0055
11.483 5604.38 10.1 0.138 10.1 3.1 1.34 1.37%Sand-Slime Tailing 0.047 93.3 0.56 0.00 0.56 0 1.41 14.151 196.70 16.47 17 1.45% 2.6 47% 1.13 0.00 1.13 0 0.94 0.05 0.99 1.0 0.054 36.08 52.54 0.080 1.49 0.95 0.23 0.80 1.09 1.0 0.038 3.51 57.77 0.098 3.63 2.56 2 6.68 460 1.4E-03 3.1E+02 3.6E-04 10 0.210 7687 0.13% 2.00 0.65 0.03% 0.022 0.34 0.079 0.765 3.41% 0.0056
11.647 5604.21 14.6 0.228 14.6 2.1 0.91 1.56%Sand-Slime Tailing 0.047 93.3 0.56 0.00 0.56 0 1.38 20.144 280.00 23.42 25 1.63% 2.5 47% 1.14 0.00 1.14 0 0.94 0.05 0.98 1.0 0.053 38.51 61.93 0.090 1.68 0.95 0.28 0.80 1.09 1.0 0.038 2.87 67.29 0.108 3.96 2.82 2 6.73 460 1.4E-03 3.1E+02 3.6E-04 10 0.210 7666 0.13% 2.00 0.65 0.03% 0.023 0.34 0.079 0.765 3.46% 0.0057
11.811 5604.05 12.5 0.140 12.5 3.1 1.35 1.12%Sand-Slime Tailing 0.059 119.0 0.57 0.00 0.57 1 1.38 17.237 239.60 20.05 21 1.18% 2.5 47% 1.15 0.00 1.15 0 0.94 0.05 0.98 1.0 0.053 37.33 57.39 0.085 1.59 0.95 0.26 0.80 1.09 1.0 0.038 2.80 56.18 0.096 3.50 2.54 2 6.78 460 1.8E-03 3.9E+02 2.9E-04 10 0.211 7639 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.84% 0.0030
11.975 5603.89 12.6 0.058 12.6 2.8 1.22 0.46%Sand-Slime Tailing 0.059 119.0 0.58 0.01 0.57 1 1.37 17.307 240.56 20.13 21 0.48% 2.3 47% 1.16 0.00 1.16 0 0.94 0.05 0.98 1.0 0.053 37.36 57.49 0.085 1.60 0.95 0.26 0.80 1.08 1.0 0.039 2.05 41.26 0.084 3.03 2.31 2 6.83 460 1.8E-03 3.9E+02 2.9E-04 10 0.211 7612 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.87% 0.0031
12.139 5603.72 13.5 0.096 13.4 5.0 2.18 0.71%Sand-Slime Tailing 0.059 119.0 0.59 0.01 0.58 1 1.36 18.315 254.58 21.32 22 0.75% 2.4 47% 1.17 0.00 1.17 0 0.94 0.05 0.98 1.0 0.053 37.78 59.10 0.087 1.63 0.95 0.27 0.80 1.08 1.0 0.039 2.26 48.23 0.090 3.22 2.42 2 6.88 460 1.8E-03 3.9E+02 2.9E-04 10 0.211 7586 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.91% 0.0031
12.303 5603.56 11.6 0.118 11.5 11.0 4.78 1.02%Sand-Slime Tailing 0.059 119.0 0.60 0.02 0.58 1 1.36 15.638 217.37 18.27 19 1.07% 2.5 47% 1.18 0.00 1.18 0 0.94 0.05 0.98 1.0 0.053 36.71 54.98 0.082 1.55 0.95 0.25 0.80 1.08 1.0 0.039 2.90 53.04 0.094 3.32 2.44 2 6.93 460 1.8E-03 3.9E+02 2.9E-04 10 0.212 7560 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.94% 0.0032
12.467 5603.39 11.3 0.166 11.2 12.8 5.56 1.47%Sand-Slime Tailing 0.059 119.0 0.61 0.03 0.59 1 1.35 15.110 210.03 17.67 18 1.56% 2.6 47% 1.19 0.00 1.19 0 0.93 0.05 0.98 1.0 0.053 36.50 54.18 0.082 1.54 0.95 0.24 0.80 1.08 1.0 0.039 3.47 61.35 0.101 3.57 2.55 2 6.98 460 1.8E-03 3.9E+02 3.0E-04 10 0.212 7534 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.98% 0.0032
12.631 5603.23 11.0 0.151 10.9 12.5 5.42 1.38%Sand-Slime Tailing 0.059 119.0 0.62 0.03 0.59 1 1.34 14.588 202.77 17.06 17 1.46% 2.6 47% 1.20 0.00 1.20 0 0.93 0.05 0.98 1.0 0.053 36.29 53.35 0.081 1.52 0.95 0.24 0.80 1.08 1.0 0.039 3.47 59.22 0.099 3.46 2.49 2 7.03 460 1.8E-03 3.9E+02 3.0E-04 10 0.213 7508 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 2.01% 0.0033
12.795 5603.06 18.2 0.083 18.2 2.6 1.13 0.46%Sand-Slime Tailing 0.059 119.0 0.63 0.04 0.60 1 1.31 23.841 331.39 27.71 29 0.47% 2.2 47% 1.21 0.00 1.21 0 0.93 0.06 0.98 1.0 0.053 40.02 67.74 0.097 1.83 0.95 0.30 0.80 1.08 1.0 0.039 1.65 45.66 0.088 3.05 2.44 2 7.08 460 1.8E-03 3.9E+02 3.0E-04 10 0.213 7483 0.08% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 2.05% 0.0034
12.959 5602.90 20.3 0.069 20.3 0.7 0.29 0.34%Sand-Slime Tailing 0.059 119.0 0.64 0.04 0.60 1 1.30 26.297 365.53 30.55 33 0.35% 2.1 47% 1.22 0.00 1.22 0 0.93 0.06 0.98 1.0 0.053 41.02 71.56 0.102 1.93 0.95 0.32 0.80 1.07 1.0 0.039 1.46 44.47 0.087 2.99 2.46 2 7.13 460 1.8E-03 3.9E+02 3.0E-04 10 0.214 7458 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.09% 0.0034
13.123 5602.74 21.3 0.128 21.3 -0.0 -0.01 0.60%Sand-Slime Tailing 0.059 119.0 0.65 0.05 0.61 1 1.29 27.402 380.89 31.83 34 0.62% 2.2 47% 1.23 0.00 1.23 0 0.93 0.06 0.98 1.0 0.053 41.46 73.29 0.104 1.97 0.95 0.33 0.80 1.07 1.0 0.039 1.63 51.99 0.093 3.18 2.57 2 7.18 460 1.8E-03 3.9E+02 3.1E-04 10 0.214 7433 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.12% 0.0035
13.287 5602.57 22.1 0.250 22.1 2.2 0.94 1.13%Sand-Slime Tailing 0.059 119.0 0.66 0.05 0.61 1 1.28 28.264 392.88 32.85 35 1.16% 2.3 47% 1.24 0.00 1.24 0 0.93 0.06 0.98 1.0 0.052 41.82 74.67 0.106 2.01 0.94 0.33 0.80 1.07 1.0 0.039 1.99 65.50 0.106 3.60 2.80 2 7.23 460 1.8E-03 3.9E+02 3.1E-04 10 0.214 7409 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.16% 0.0035
13.451 5602.41 17.9 0.288 17.9 3.9 1.69 1.61%Sand-Slime Tailing 0.059 119.0 0.67 0.06 0.61 1 1.29 22.955 319.07 26.70 28 1.67% 2.5 47% 1.25 0.00 1.25 0 0.93 0.06 0.98 1.0 0.052 39.66 66.36 0.095 1.81 0.94 0.30 0.80 1.07 1.0 0.039 2.69 71.93 0.115 3.85 2.83 2 7.28 460 1.8E-03 3.9E+02 3.1E-04 10 0.215 7385 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.19% 0.0036
13.615 5602.24 16.1 0.193 16.1 8.8 3.83 1.20%Sand-Slime Tailing 0.059 119.0 0.68 0.06 0.62 1 1.28 20.647 287.00 24.06 25 1.25% 2.5 47% 1.26 0.00 1.26 0 0.93 0.06 0.98 1.0 0.052 38.74 62.80 0.091 1.74 0.94 0.28 0.80 1.07 1.0 0.039 2.56 61.51 0.102 3.39 2.57 2 7.33 460 1.8E-03 3.9E+02 3.1E-04 10 0.215 7361 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.23% 0.0037
13.779 5602.08 19.4 0.123 19.3 9.7 4.21 0.63%Sand-Slime Tailing 0.059 119.0 0.69 0.07 0.62 1 1.27 24.473 340.18 28.51 30 0.66% 2.2 47% 1.27 0.00 1.27 0 0.92 0.06 0.98 1.0 0.052 40.30 68.82 0.098 1.88 0.94 0.31 0.80 1.07 1.0 0.039 1.79 51.10 0.092 3.06 2.47 2 7.38 460 1.8E-03 3.9E+02 3.2E-04 10 0.216 7338 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.27% 0.0037
13.943 5601.92 25.1 0.130 25.1 8.8 3.83 0.52%Sand-Slime Tailing 0.059 119.0 0.70 0.07 0.63 1 1.24 31.169 433.25 36.28 39 0.53% 2.1 47% 1.28 0.00 1.28 0 0.92 0.06 0.98 1.0 0.052 43.03 79.31 0.112 2.15 0.94 0.35 0.80 1.06 1.0 0.039 1.47 53.16 0.094 3.09 2.62 2 7.43 460 1.8E-03 3.9E+02 3.2E-04 10 0.216 7314 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.30% 0.0038
14.107 5601.75 25.6 0.219 25.6 8.3 3.58 0.85%Sand-Slime Tailing 0.059 119.0 0.71 0.08 0.63 1 1.24 31.630 439.66 36.81 39 0.88% 2.2 47% 1.29 0.00 1.29 0 0.92 0.06 0.97 1.0 0.052 43.21 80.02 0.113 2.17 0.94 0.35 0.80 1.06 1.0 0.039 1.68 62.01 0.102 3.34 2.75 2 7.48 460 1.8E-03 3.9E+02 3.2E-04 10 0.217 7291 0.09% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.34% 0.0038
14.271 5601.59 25.3 0.206 25.3 14.8 6.43 0.81%Sand-Slime Tailing 0.059 119.0 0.72 0.08 0.64 1 1.23 31.101 432.30 36.25 39 0.84% 2.2 47% 1.30 0.00 1.30 0 0.92 0.06 0.97 1.0 0.052 43.02 79.27 0.112 2.15 0.94 0.35 0.80 1.06 1.0 0.039 1.67 60.69 0.101 3.27 2.71 2 7.53 460 1.8E-03 3.9E+02 3.2E-04 10 0.217 7268 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.38% 0.0039
14.436 5601.42 28.0 0.355 27.9 15.7 6.79 1.27%Sand-Slime Tailing 0.059 119.0 0.73 0.09 0.64 1 1.22 33.991 472.48 39.62 42 1.30% 2.3 47% 1.31 0.00 1.31 0 0.92 0.06 0.97 1.0 0.052 44.20 83.81 0.118 2.28 0.94 0.36 0.80 1.06 1.0 0.039 1.87 74.22 0.118 3.81 3.04 2 7.58 460 1.8E-03 3.9E+02 3.3E-04 10 0.217 7246 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.42% 0.0040
14.600 5601.26 21.9 0.337 21.8 19.3 8.38 1.54%Sand-Slime Tailing 0.059 119.0 0.74 0.09 0.65 1 1.23 26.771 372.11 31.26 33 1.59% 2.4 47% 1.32 0.00 1.32 0 0.92 0.06 0.97 1.0 0.052 41.27 72.53 0.103 1.99 0.94 0.32 0.80 1.06 1.0 0.039 2.38 74.56 0.119 3.80 2.89 2 7.63 500 1.8E-03 4.6E+02 2.8E-04 10 0.218 7223 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.56% 0.0026
14.764 5601.10 27.4 0.402 27.2 33.6 14.56 1.47%Sand-Slime Tailing 0.059 119.0 0.75 0.10 0.65 1 1.21 32.863 456.79 38.46 41 1.51% 2.3 47% 1.32 0.00 1.32 0 0.92 0.06 0.97 1.0 0.052 43.79 82.25 0.116 2.25 0.94 0.36 0.80 1.06 1.0 0.039 2.04 78.35 0.125 3.97 3.11 2 7.68 500 1.8E-03 4.6E+02 2.8E-04 10 0.218 7201 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.59% 0.0026
14.928 5600.93 49.6 0.629 49.5 20.9 9.05 1.27%Sand Tailings 0.062 123.5 0.76 0.10 0.66 1 1.17 57.889 804.66 67.41 74 1.29% 2.1 18% 1.33 0.00 1.33 0 0.92 0.08 0.96 1.0 0.051 39.32 106.73 0.154 3.02 0.94 0.47 0.76 1.07 1.0 0.039 1.42 95.65 0.161 5.10 4.06 2 7.73 500 1.9E-03 4.8E+02 2.7E-04 0 0.220 9065 0.08% 2.20 1.00 0.03%0.001 0.34 0.079 0.765 0.17% 0.0003
15.092 5600.77 29.2 0.705 29.1 11.9 5.15 2.41%Sand-Slime Tailing 0.059 119.0 0.77 0.11 0.66 1 1.19 34.821 484.01 40.55 43 2.48% 2.4 47% 1.34 0.00 1.34 0 0.91 0.07 0.97 1.0 0.051 44.52 85.07 0.120 2.33 0.94 0.37 0.80 1.05 1.0 0.039 2.51 101.61 0.178 5.57 3.95 2 7.78 500 1.8E-03 4.6E+02 2.8E-04 10 0.219 7157 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.64% 0.0027
15.256 5600.60 26.1 0.521 26.1 10.3 4.48 1.99%Sand-Slime Tailing 0.059 119.0 0.78 0.11 0.67 1 1.20 31.170 433.26 36.29 38 2.05% 2.4 47% 1.35 0.00 1.35 0 0.91 0.06 0.97 1.0 0.051 43.03 79.32 0.112 2.18 0.94 0.35 0.80 1.05 1.0 0.039 2.45 88.96 0.145 4.54 3.36 2 7.83 500 1.8E-03 4.6E+02 2.9E-04 10 0.219 7136 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.67% 0.0027
15.420 5600.44 21.1 0.398 21.0 25.4 11.00 1.88%Sand-Slime Tailing 0.059 119.0 0.79 0.12 0.67 1 1.20 25.169 349.85 29.45 30 1.96% 2.5 47% 1.36 0.00 1.36 0 0.91 0.06 0.97 1.0 0.051 40.63 70.08 0.100 1.94 0.94 0.31 0.80 1.05 1.0 0.039 2.75 81.14 0.130 4.02 2.98 2 7.88 500 1.8E-03 4.6E+02 2.9E-04 10 0.220 7114 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.70% 0.0028
15.584 5600.28 18.2 0.232 17.9 47.5 20.56 1.28%Sand-Slime Tailing 0.059 119.0 0.80 0.12 0.68 1 1.20 21.442 298.05 25.32 26 1.34% 2.5 47% 1.37 0.00 1.37 0 0.91 0.06 0.97 1.0 0.051 39.18 64.50 0.093 1.81 0.94 0.29 0.80 1.05 1.0 0.039 2.58 65.28 0.106 3.26 2.54 2 7.93 500 1.8E-03 4.6E+02 2.9E-04 10 0.220 7093 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.73% 0.0028
15.748 5600.11 17.7 0.358 17.4 55.7 24.12 2.02%Sand-Slime Tailing 0.059 119.0 0.81 0.13 0.68 1 1.20 20.745 288.36 24.58 25 2.12% 2.6 47% 1.38 0.00 1.38 0 0.91 0.06 0.97 1.0 0.051 38.92 63.50 0.092 1.79 0.94 0.29 0.80 1.05 1.0 0.039 3.25 79.94 0.128 3.90 2.85 2 7.98 500 1.8E-03 4.6E+02 2.9E-04 10 0.221 7073 0.07% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.75% 0.0029
15.912 5599.95 15.1 0.207 14.6 74.8 32.40 1.37%Sand-Slime Tailing 0.059 119.0 0.82 0.13 0.68 1 1.20 17.473 242.88 20.94 21 1.45% 2.6 47% 1.39 0.00 1.39 0 0.91 0.05 0.97 1.0 0.051 37.65 58.59 0.086 1.69 0.94 0.26 0.80 1.05 1.0 0.040 3.07 64.37 0.105 3.18 2.44 2 8.03 500 1.8E-03 4.6E+02 2.9E-04 10 0.221 7052 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.78% 0.0029
16.076 5599.78 20.3 0.257 19.8 68.4 29.65 1.27%Sand-Slime Tailing 0.059 119.0 0.83 0.14 0.69 1 1.18 23.370 324.85 27.73 28 1.32% 2.4 47% 1.40 0.00 1.40 0 0.91 0.06 0.97 1.0 0.051 40.03 67.75 0.097 1.90 0.94 0.30 0.80 1.05 1.0 0.040 2.42 67.01 0.108 3.26 2.58 2 8.08 500 1.8E-03 4.6E+02 3.0E-04 10 0.221 7032 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.81% 0.0030
16.240 5599.62 21.4 0.347 21.2 43.6 18.89 1.62%Sand-Slime Tailing 0.059 119.0 0.84 0.14 0.69 1 1.17 24.772 344.33 29.14 30 1.68% 2.5 47% 1.41 0.00 1.41 0 0.91 0.06 0.97 1.0 0.051 40.52 69.66 0.099 1.95 0.94 0.31 0.80 1.04 1.0 0.040 2.60 75.89 0.121 3.62 2.78 2 8.13 500 1.8E-03 4.6E+02 3.0E-04 10 0.222 7011 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.84% 0.0030
16.404 5599.46 16.6 0.322 16.3 49.4 21.39 1.94%Sand-Slime Tailing 0.059 119.0 0.85 0.15 0.70 1 1.17 19.179 266.59 22.70 23 2.04% 2.6 47% 1.42 0.00 1.42 0 0.90 0.05 0.97 1.0 0.051 38.26 60.96 0.089 1.75 0.94 0.28 0.80 1.04 1.0 0.040 3.39 77.02 0.122 3.65 2.70 2 8.18 500 1.8E-03 4.6E+02 3.0E-04 10 0.222 6991 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.87% 0.0031
16.568 5599.29 13.3 0.286 12.8 72.0 31.18 2.16%Sand-Slime Tailing 0.059 119.0 0.86 0.15 0.70 1 1.17 15.003 208.55 18.04 18 2.31% 2.7 47% 1.43 0.00 1.43 0 0.90 0.05 0.97 1.0 0.051 36.63 54.66 0.082 1.62 0.94 0.25 0.80 1.04 1.0 0.040 4.22 76.04 0.121 3.58 2.60 2 8.23 500 1.8E-03 4.6E+02 3.0E-04 10 0.223 6972 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.89% 0.0031
16.732 5599.13 10.2 0.232 9.8 68.1 29.53 2.28%Slime Tailings 0.057 113.1 0.87 0.16 0.71 1 1.17 11.379 158.16 13.79 13 2.49% 2.9 71% 1.44 0.00 1.44 0 0.90 0.05 0.98 1.0 0.051 34.89 48.68 0.076 1.50 0.94 0.21 0.80 1.04 1.0 0.040 5.25 72.36 0.115 3.40 2.45 2 8.28 500 1.8E-03 4.4E+02 3.2E-04 16 0.474 5729 0.09% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.36% 0.0039
16.896 5598.96 9.5 0.302 9.0 80.2 34.74 3.18%Slime Tailings 0.057 113.1 0.88 0.16 0.71 1 1.16 10.433 145.02 12.79 12 3.51% 3.0 71% 1.45 0.00 1.45 0 0.90 0.05 0.98 1.0 0.051 34.54 47.33 0.075 1.48 0.94 0.21 0.80 1.04 1.0 0.040 6.40 81.87 0.131 3.84 2.66 2 8.33 500 1.8E-03 4.4E+02 3.2E-04 16 0.475 5714 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.39% 0.0039
17.060 5598.80 16.7 0.143 16.2 83.4 36.16 0.86%Sand-Slime Tailing 0.059 119.0 0.88 0.17 0.72 1 1.15 18.672 259.55 22.38 22 0.90% 2.4 47% 1.46 0.00 1.46 0 0.90 0.05 0.97 1.0 0.051 38.15 60.54 0.088 1.75 0.94 0.27 0.80 1.04 1.0 0.040 2.43 54.50 0.095 2.77 2.26 2 8.38 500 1.8E-03 4.6E+02 3.1E-04 10 0.224 6915 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.98% 0.0032
17.224 5598.64 29.8 0.265 29.6 24.9 10.78 0.89%Sand-Slime Tailing 0.059 119.0 0.89 0.17 0.72 1 1.13 33.458 465.06 39.06 40 0.92% 2.2 47% 1.47 0.00 1.47 0 0.90 0.06 0.97 1.0 0.050 44.00 83.06 0.117 2.33 0.94 0.36 0.80 1.04 1.0 0.040 1.69 66.07 0.107 3.09 2.71 2 8.43 500 1.8E-03 4.6E+02 3.1E-04 10 0.224 6896 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 2.00% 0.0033
P = γeff*(Geff
/Gmax)
(tsf)
Volumetric Strain for Design Event, εv (%)
Incrementa
l Consolidation (ft)
CN
Volumetric
Strain for
Design
Event, εv (%)
Incremental Consolidation (ft)
TOTAL SEISMIC SETTLEMENT (FT):
Midpoint Depth at t1, z1
Shear Wave Velocity, Vs
Soil Density, ρ (tcf)b
Threshhol
d Shear Strain, γtv
(%)
Volumetri
c Strain at
15 Cycles,
εc-15 (%)Rc
Plasticity Index, PI g1 g2
Shear Strain, γ (%)a
Effective Stress at Bottom of Layer
Effective Stress at Midpoint of Layer FINAL COVER
Erosion Protection Layer
Water Storage/Rooting Zone Layer
qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Equil Pore Pressure at Midpoint of Layer (tsf)
Max Shear
Strain
Modulus,
Gmax (tsf)
Unit Weight (tcf)
Unit Weight (pcf)
Total Stress at Bottom of Layer
Total Stress at Midpoint of Layer
Equil Pore Pressure at Bottom of Layer
Cyclic Resistance Ratio
FoS
Cyclic Stress Ratio
FoS
∆qc1n qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Threshhol
d Shear
Strain, γtv (%)
Volumetric Strain at 15 Cycles, εc-15 (%)RcCNg1g2
Shear
Strain, γ ab
Seismic Settlement Analysis - Stewart et al (2004)
Shear Wave Velocity, Vs
High Compaction Layer
Platform/Random Fill Layer
Pw (u2)Pw (u2)
2013 CPT Data from ConeTec CPT Data Interpretations
fs/qt
Material
Type (as determined by fines
Unit Weight Unit Weight
Total
Stress
at time of CPT
Depth
at time of CPT Elevation qt fs qc
Effective
Stress at
time of CPT
Saturated
at time of CPT
Type Index,
Ic FC
Youd, et al (2001)
Max. Horiz. Acceleration, Amax/g: 0.15
Earthquake Moment Magnitude, M:
Idriss and Boulanger (2008)
Max. Horiz. Acceleration, Amax/g:
Earthquake Moment Magnitude, M:
Magnitude Scaling Factor, MSF:
WHITE MESA TAILINGS REPOSITORY LIQUEFACTION AND SEISMIC SETTLEMENT ANALYSES - 2W5-C Elev. at Top of Layer (ft)
Elev. At Midpoint of Layer (ft)
Elev. At Bottom of Layer
Thickness of Layer (ft)
5.5
Magnitude Scaling Factor, MSF:
Equil
Pore
Pressure at time of
Conditions at t1 Liquefaction Triggering AnalysesEquil
Pore Pressure at t1CN qc1 qc1 qc1N
Normalized
Cone
Penetration Resistance, Qt
Normalize
d Friction
Ratio, Fr (%)
Total Stress at t1 Liquefiable?1=Yes
2=No
Cyclic Stress RatioEffective Stress at t1
Saturated at t1
Idriss & Boulanger (2008)
CSR
M=7.5,
s'v=1atm
Kc
Scaling Factor for stress ration, rm
Volumetric Strain Ratio for Site-Specific Design Eart
Equiv. Number of Uniform Strain Cycles, N
Youd et al. (2001)
CSR
M=7.5,
s'v=1atm
Depth at t1, z1
Soil Density, ρ
Maximum Shear Strain
Modulus,
Gmax
P =
γeff*(Geff/Gmax)
Plastici
ty Index, PI
Liquef_SeismicSettle_30Aug2015.xls Page 10 of 29
Energy Fuels Resources (USA) Inc.White Mesa Mill
Seismic Settlement Analyses
Data File: 13-52106_SP2W5-C-BSC-CPT 5604.20 Water surface elevation during CPT investigation (ft 5615.86 Ground Surface Elevation at time of CPT (ft amsl)
Location: White Mesa 2013 CPT Investigation 0.15 5604.20 Water surface elevation at t0 (ft amsl)5626.28 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl)
..\..\..\6.2.3 Field Data\2013 Field Investigation\Conetec Dat 5.5 5589.01 Water surface elevation at t1 (ft amsl) 0.50 Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after plac ###### 5626.03 5625.78 0.50 0.055 110 0.028 0.014 0.00 0.00 0.028 0.014 0.08 508 1.7E-03 4.4E+02 3.0E-06 11 0.068 46696 0.00% 1.20 0.80 0.04% 0.000 0.32 0.133 0.778 0.00% 0.0000
Tailings Sands 1.69 5584.01 Water surface elevation at t2 (ft amsl)3.50 Thickness of Water Storage/Rooting Zone (ft)###### 5624.03 5622.28 3.50 0.054 107 0.215 0.121 0.00 0.00 0.215 0.121 0.69 508 1.7E-03 4.3E+02 2.8E-05 11 0.118 18930 0.00% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
Tailings Sand-Slimes 4.00 Thickness of High Compaction Layer (ft)###### 5620.28 5618.28 4.00 0.060 120 0.454 0.334 0.00 0.00 0.454 0.334 1.83 508 1.9E-03 4.8E+02 6.8E-05 11 0.153 12419 0.01% 0.65 0.75 0.02% 0.000 0.34 0.079 0.765 0.00% 0.0000
Tailings Slimes 1.44 2.42 Thickness of Random/Platform Fill on on top of existing interim cover (ft) ###### 5617.07 5615.86 2.42 0.050 101 0.576 0.515 0.00 0.00 0.576 0.515 2.81 508 1.6E-03 4.0E+02 1.2E-04 11 0.171 10381 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
Interim Cover 0.47 1151.89 Additional Stress due to Final Cover Placement, ΔσFC (psf)
Cells Requiring User Input/Manipulation 2.21 2.21 7.51 5584.01 Elevation of bottom of tailings (liner) (ft amsl)
0.494
rd Cσ Kσ Ka rd Dr f Kσ Ka Avg
(ft) (ft amsl) TSF TSF TSF (ft) PSI (%) (tcf) (pcf) (tsf)(tsf)(tsf) 1=Yes TSF MPa % (tsf)(tsf)(tsf) 1=Yes FoS m
0=No 0=No (ft/sec) (tcf) tsf tsf (%)
P = γeff*(Geff
/Gmax)
(tsf)
Volumetric Strain for Design Event, εv (%)
Incrementa
l Consolidation (ft)
CN
Volumetric
Strain for
Design
Event, εv (%)
Incremental Consolidation (ft)
TOTAL SEISMIC SETTLEMENT (FT):
Midpoint Depth at t1, z1
Shear Wave Velocity, Vs
Soil Density, ρ (tcf)b
Threshhol
d Shear Strain, γtv
(%)
Volumetri
c Strain at
15 Cycles,
εc-15 (%)Rc
Plasticity Index, PI g1 g2
Shear Strain, γ (%)a
Effective Stress at Bottom of Layer
Effective Stress at Midpoint of Layer FINAL COVER
Erosion Protection Layer
Water Storage/Rooting Zone Layer
qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Equil Pore Pressure at Midpoint of Layer (tsf)
Max Shear
Strain
Modulus,
Gmax (tsf)
Unit Weight (tcf)
Unit Weight (pcf)
Total Stress at Bottom of Layer
Total Stress at Midpoint of Layer
Equil Pore Pressure at Bottom of Layer
Cyclic Resistance Ratio
FoS
Cyclic Stress Ratio
FoS
∆qc1n qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Threshhol
d Shear
Strain, γtv (%)
Volumetric Strain at 15 Cycles, εc-15 (%)RcCNg1g2
Shear
Strain, γ ab
Seismic Settlement Analysis - Stewart et al (2004)
Shear Wave Velocity, Vs
High Compaction Layer
Platform/Random Fill Layer
Pw (u2)Pw (u2)
2013 CPT Data from ConeTec CPT Data Interpretations
fs/qt
Material
Type (as determined by fines
Unit Weight Unit Weight
Total
Stress
at time of CPT
Depth
at time of CPT Elevation qt fs qc
Effective
Stress at
time of CPT
Saturated
at time of CPT
Type Index,
Ic FC
Youd, et al (2001)
Max. Horiz. Acceleration, Amax/g: 0.15
Earthquake Moment Magnitude, M:
Idriss and Boulanger (2008)
Max. Horiz. Acceleration, Amax/g:
Earthquake Moment Magnitude, M:
Magnitude Scaling Factor, MSF:
WHITE MESA TAILINGS REPOSITORY LIQUEFACTION AND SEISMIC SETTLEMENT ANALYSES - 2W5-C Elev. at Top of Layer (ft)
Elev. At Midpoint of Layer (ft)
Elev. At Bottom of Layer
Thickness of Layer (ft)
5.5
Magnitude Scaling Factor, MSF:
Equil
Pore
Pressure at time of
Conditions at t1 Liquefaction Triggering AnalysesEquil
Pore Pressure at t1CN qc1 qc1 qc1N
Normalized
Cone
Penetration Resistance, Qt
Normalize
d Friction
Ratio, Fr (%)
Total Stress at t1 Liquefiable?1=Yes
2=No
Cyclic Stress RatioEffective Stress at t1
Saturated at t1
Idriss & Boulanger (2008)
CSR
M=7.5,
s'v=1atm
Kc
Scaling Factor for stress ration, rm
Volumetric Strain Ratio for Site-Specific Design Eart
Equiv. Number of Uniform Strain Cycles, N
Youd et al. (2001)
CSR
M=7.5,
s'v=1atm
Depth at t1, z1
Soil Density, ρ
Maximum Shear Strain
Modulus,
Gmax
P =
γeff*(Geff/Gmax)
Plastici
ty Index, PI
17.388 5598.47 19.1 0.394 19.0 18.5 8.03 2.06%Sand-Slime Tailing 0.059 119.0 0.90 0.18 0.73 1 1.14 21.615 300.45 25.26 25 2.16% 2.6 47% 1.48 0.00 1.48 0 0.90 0.06 0.97 1.0 0.050 39.16 64.42 0.093 1.85 0.94 0.29 0.80 1.03 1.0 0.040 3.26 82.40 0.132 3.80 2.82 2 8.48 500 1.8E-03 4.6E+02 3.1E-04 10 0.224 6877 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 2.03% 0.0033
17.552 5598.31 15.7 0.311 15.6 23.1 10.01 1.98%Sand-Slime Tailing 0.059 119.0 0.91 0.18 0.73 1 1.14 17.686 245.84 20.73 20 2.10% 2.7 47% 1.49 0.00 1.49 0 0.90 0.05 0.97 1.0 0.050 37.57 58.30 0.086 1.71 0.93 0.26 0.80 1.03 1.0 0.040 3.70 76.68 0.122 3.49 2.60 2 8.53 500 1.8E-03 4.6E+02 3.1E-04 10 0.225 6859 0.08% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 2.06% 0.0034
17.716 5598.14 13.9 0.260 13.8 26.1 11.33 1.86%Sand-Slime Tailing 0.059 119.0 0.92 0.19 0.73 1 1.13 15.596 216.78 18.33 18 2.00% 2.7 47% 1.50 0.00 1.50 0 0.89 0.05 0.97 1.0 0.050 36.73 55.06 0.083 1.64 0.93 0.25 0.80 1.03 1.0 0.040 3.94 72.19 0.115 3.27 2.46 2 8.58 500 1.8E-03 4.6E+02 3.2E-04 10 0.225 6840 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.09% 0.0034
17.880 5597.98 18.8 0.179 18.5 52.4 22.70 0.95%Sand-Slime Tailing 0.059 119.0 0.93 0.19 0.74 1 1.12 20.761 288.58 24.54 24 1.00% 2.4 47% 1.51 0.00 1.51 0 0.89 0.06 0.97 1.0 0.050 38.91 63.45 0.092 1.83 0.93 0.29 0.80 1.03 1.0 0.040 2.38 58.47 0.099 2.79 2.31 2 8.63 500 1.8E-03 4.6E+02 3.2E-04 10 0.226 6822 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.12% 0.0035
18.044 5597.82 39.1 0.438 39.0 24.3 10.53 1.12%Sand-Slime Tailing 0.059 119.0 0.94 0.20 0.74 1 1.10 42.754 594.28 49.85 51 1.15% 2.2 47% 1.52 0.00 1.52 0 0.89 0.07 0.96 1.0 0.049 47.78 97.63 0.139 2.80 0.93 0.41 0.80 1.03 1.0 0.040 1.61 80.28 0.128 3.60 3.20 2 8.68 500 1.8E-03 4.6E+02 3.2E-04 10 0.226 6804 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.15% 0.0035
18.208 5597.65 18.6 0.428 18.6 11.8 5.10 2.30%Sand-Slime Tailing 0.059 119.0 0.95 0.20 0.75 1 1.11 20.630 286.76 24.06 24 2.42% 2.6 47% 1.53 0.00 1.53 0 0.89 0.06 0.97 1.0 0.050 38.74 62.79 0.091 1.83 0.93 0.28 0.80 1.03 1.0 0.040 3.58 86.19 0.140 3.90 2.86 2 8.73 500 1.8E-03 4.6E+02 3.2E-04 10 0.226 6785 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.18% 0.0036
18.372 5597.49 12.8 0.269 12.7 14.8 6.43 2.10%Sand-Slime Tailing 0.059 119.0 0.96 0.21 0.75 1 1.11 14.096 195.93 16.49 16 2.27% 2.8 47% 1.54 0.00 1.54 0 0.89 0.05 0.97 1.0 0.050 36.09 52.58 0.080 1.60 0.93 0.23 0.80 1.03 1.0 0.040 4.51 74.42 0.118 3.29 2.45 2 8.78 500 1.8E-03 4.6E+02 3.2E-04 10 0.227 6768 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.20% 0.0036
18.537 5597.32 17.7 0.255 17.5 38.1 16.51 1.44%Sand-Slime Tailing 0.059 119.0 0.97 0.21 0.76 1 1.10 19.280 267.99 22.70 22 1.52% 2.5 47% 1.55 0.00 1.55 0 0.89 0.05 0.97 1.0 0.050 38.26 60.96 0.089 1.79 0.93 0.28 0.80 1.03 1.0 0.040 3.02 68.48 0.110 3.03 2.41 2 8.83 500 1.8E-03 4.6E+02 3.3E-04 10 0.227 6750 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.23% 0.0037
18.701 5597.16 15.7 0.298 15.5 35.1 15.21 1.90%Sand-Slime Tailing 0.059 119.0 0.98 0.22 0.76 1 1.10 17.040 236.85 20.07 19 2.02% 2.7 47% 1.56 0.00 1.56 0 0.89 0.05 0.97 1.0 0.050 37.34 57.41 0.085 1.71 0.93 0.26 0.80 1.02 1.0 0.040 3.74 75.13 0.119 3.28 2.50 2 8.88 500 1.8E-03 4.6E+02 3.3E-04 10 0.227 6732 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.26% 0.0037
18.865 5597.00 16.1 0.307 15.8 50.1 21.72 1.90%Sand-Slime Tailing 0.059 119.0 0.99 0.22 0.77 1 1.09 17.309 240.60 20.50 20 2.03% 2.7 47% 1.57 0.00 1.57 0 0.89 0.05 0.97 1.0 0.050 37.49 57.99 0.086 1.73 0.93 0.26 0.80 1.02 1.0 0.040 3.70 75.79 0.120 3.29 2.51 2 8.93 500 1.8E-03 4.6E+02 3.3E-04 10 0.228 6715 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.29% 0.0038
19.029 5596.83 26.6 0.234 26.5 23.1 10.00 0.88%Sand-Slime Tailing 0.059 119.0 1.00 0.23 0.77 1 1.08 28.588 397.38 33.38 33 0.91% 2.3 47% 1.58 0.00 1.58 0 0.88 0.06 0.96 1.0 0.049 42.01 75.39 0.106 2.16 0.93 0.33 0.80 1.02 1.0 0.040 1.88 62.88 0.103 2.80 2.48 2 8.98 500 1.8E-03 4.6E+02 3.3E-04 10 0.228 6698 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.32% 0.0038
19.193 5596.67 29.7 0.205 29.7 9.5 4.12 0.69%Sand-Slime Tailing 0.059 119.0 1.01 0.24 0.78 1 1.07 31.852 442.74 37.07 37 0.71% 2.2 47% 1.59 0.00 1.59 0 0.88 0.06 0.96 1.0 0.049 43.30 80.37 0.113 2.31 0.93 0.35 0.80 1.02 1.0 0.040 1.63 60.40 0.100 2.71 2.51 2 9.03 500 1.8E-03 4.6E+02 3.4E-04 10 0.229 6681 0.09% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.35% 0.0039
19.357 5596.50 31.2 0.166 31.2 6.0 2.60 0.53%Sand-Slime Tailing 0.059 119.0 1.02 0.24 0.78 1 1.07 33.332 463.32 38.76 39 0.55% 2.1 47% 1.60 0.00 1.60 0 0.88 0.06 0.96 1.0 0.049 43.90 82.66 0.116 2.38 0.93 0.36 0.80 1.02 1.0 0.040 1.48 57.35 0.098 2.62 2.50 2 9.08 500 1.8E-03 4.6E+02 3.4E-04 10 0.229 6664 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.38% 0.0039
19.521 5596.34 30.6 0.174 30.6 5.8 2.51 0.57%Sand-Slime Tailing 0.059 119.0 1.03 0.25 0.79 1 1.06 32.529 452.15 37.83 38 0.59% 2.1 47% 1.61 0.00 1.61 0 0.88 0.06 0.96 1.0 0.049 43.57 81.39 0.115 2.34 0.93 0.36 0.80 1.02 1.0 0.040 1.53 57.77 0.098 2.62 2.48 2 9.13 500 1.8E-03 4.6E+02 3.4E-04 10 0.229 6647 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.41% 0.0039
19.685 5596.18 30.2 0.251 30.2 5.6 2.43 0.83%Sand-Slime Tailing 0.059 119.0 1.04 0.25 0.79 1 1.06 32.002 444.83 37.21 37 0.86% 2.2 47% 1.62 0.00 1.62 0 0.88 0.06 0.96 1.0 0.049 43.35 80.56 0.113 2.32 0.93 0.35 0.80 1.02 1.0 0.040 1.73 64.49 0.105 2.79 2.56 2 9.18 538 1.8E-03 5.3E+02 2.9E-04 10 0.230 6630 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.66% 0.0027
19.849 5596.01 25.2 0.236 25.2 6.5 2.83 0.93%Sand-Slime Tailing 0.059 119.0 1.05 0.26 0.80 1 1.06 26.686 370.94 31.04 30 0.98% 2.3 47% 1.63 0.00 1.63 0 0.88 0.06 0.96 1.0 0.049 41.19 72.23 0.102 2.10 0.93 0.32 0.80 1.02 1.0 0.040 2.03 63.17 0.103 2.74 2.42 2 9.23 538 1.8E-03 5.3E+02 3.0E-04 10 0.230 6614 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.69% 0.0028
20.013 5595.85 19.0 0.220 19.0 7.3 3.16 1.16%Sand-Slime Tailing 0.059 119.0 1.06 0.26 0.80 1 1.06 20.060 278.83 23.35 22 1.23% 2.5 47% 1.64 0.00 1.64 0 0.88 0.05 0.96 1.0 0.049 38.49 61.85 0.090 1.84 0.93 0.28 0.80 1.01 1.0 0.040 2.72 63.54 0.104 2.74 2.29 2 9.28 538 1.8E-03 5.3E+02 3.0E-04 10 0.230 6597 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.71% 0.0028
20.177 5595.68 29.6 0.210 29.5 8.7 3.79 0.71%Sand-Slime Tailing 0.059 119.0 1.07 0.27 0.80 1 1.05 30.959 430.33 36.02 35 0.74% 2.2 47% 1.65 0.00 1.65 0 0.87 0.06 0.96 1.0 0.049 42.94 78.96 0.111 2.29 0.93 0.35 0.80 1.01 1.0 0.040 1.68 60.65 0.101 2.64 2.47 2 9.33 538 1.8E-03 5.3E+02 3.0E-04 10 0.231 6581 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.73% 0.0028
20.341 5595.52 30.3 0.241 30.2 8.7 3.77 0.80%Sand-Slime Tailing 0.059 119.0 1.08 0.27 0.81 1 1.04 31.560 438.68 36.72 36 0.83% 2.2 47% 1.66 0.00 1.66 0 0.87 0.06 0.96 1.0 0.048 43.18 79.90 0.112 2.32 0.92 0.35 0.80 1.01 1.0 0.040 1.73 63.52 0.104 2.71 2.52 2 9.38 538 1.8E-03 5.3E+02 3.0E-04 10 0.231 6565 0.07% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.76% 0.0029
20.505 5595.36 30.4 0.302 30.3 9.5 4.11 0.99%Sand-Slime Tailing 0.059 119.0 1.09 0.28 0.81 1 1.04 31.508 437.97 36.67 36 1.03% 2.3 47% 1.67 0.00 1.67 0 0.87 0.06 0.96 1.0 0.048 43.16 79.83 0.112 2.33 0.92 0.35 0.80 1.01 1.0 0.040 1.88 68.85 0.110 2.87 2.60 2 9.43 538 1.8E-03 5.3E+02 3.0E-04 10 0.231 6549 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.78% 0.0029
20.669 5595.19 31.3 0.368 31.3 10.8 4.68 1.17%Sand-Slime Tailing 0.059 119.0 1.10 0.28 0.82 1 1.04 32.371 449.96 37.68 37 1.22% 2.3 47% 1.68 0.00 1.68 0 0.87 0.06 0.96 1.0 0.048 43.52 81.19 0.114 2.37 0.92 0.35 0.80 1.01 1.0 0.040 1.97 74.32 0.118 3.06 2.72 2 9.48 538 1.8E-03 5.3E+02 3.1E-04 10 0.232 6533 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.80% 0.0030
20.833 5595.03 30.5 0.484 30.4 10.9 4.74 1.59%Sand-Slime Tailing 0.059 119.0 1.11 0.29 0.82 1 1.03 31.396 436.41 36.55 36 1.65% 2.4 47% 1.69 0.00 1.69 0 0.87 0.06 0.96 1.0 0.048 43.12 79.67 0.112 2.33 0.92 0.35 0.80 1.01 1.0 0.040 2.30 83.89 0.135 3.48 2.90 2 9.53 538 1.8E-03 5.3E+02 3.1E-04 10 0.232 6517 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.82% 0.0030
20.997 5594.86 26.1 0.582 26.0 10.9 4.74 2.23%Sand-Slime Tailing 0.059 119.0 1.12 0.29 0.83 1 1.03 26.780 372.24 31.18 30 2.33% 2.5 47% 1.69 0.00 1.69 0 0.87 0.06 0.96 1.0 0.048 41.24 72.42 0.103 2.13 0.92 0.32 0.80 1.01 1.0 0.040 3.01 93.89 0.157 4.03 3.08 2 9.58 538 1.8E-03 5.3E+02 3.1E-04 10 0.232 6502 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.85% 0.0030
21.161 5594.70 20.1 0.593 20.1 11.7 5.06 2.95%Slime Tailings 0.057 113.1 1.13 0.30 0.83 1 1.03 20.583 286.10 23.99 23 3.12% 2.7 71% 1.70 0.00 1.70 0 0.87 0.06 0.96 1.0 0.048 38.44 62.44 0.091 1.88 0.92 0.28 0.80 1.01 1.0 0.040 4.14 99.39 0.171 4.39 3.13 2 9.63 538 1.8E-03 5.1E+02 3.3E-04 16 0.484 5348 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.28% 0.0037
21.325 5594.53 18.4 0.531 18.3 20.6 8.93 2.89%Slime Tailings 0.057 113.1 1.14 0.30 0.84 1 1.02 18.692 259.82 21.86 21 3.08% 2.7 71% 1.71 0.00 1.71 0 0.87 0.05 0.96 1.0 0.048 37.70 59.56 0.087 1.81 0.92 0.27 0.80 1.01 1.0 0.040 4.37 95.63 0.161 4.12 2.96 2 9.68 538 1.8E-03 5.1E+02 3.3E-04 16 0.484 5336 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.30% 0.0038
21.489 5594.37 17.0 0.447 16.8 29.0 12.56 2.63%Slime Tailings 0.057 113.1 1.15 0.31 0.84 1 1.02 17.124 238.03 20.10 19 2.82% 2.8 71% 1.72 0.00 1.72 0 0.86 0.05 0.96 1.0 0.048 37.09 57.19 0.085 1.76 0.91 0.26 0.80 1.00 1.0 0.040 4.44 89.28 0.146 3.72 2.74 2 9.73 538 1.8E-03 5.1E+02 3.3E-04 16 0.484 5325 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.32% 0.0038
21.653 5594.21 14.2 0.424 14.0 29.7 12.89 2.99%Slime Tailings 0.057 113.1 1.16 0.31 0.84 1 1.02 14.215 197.59 16.73 15 3.25% 2.9 71% 1.73 0.00 1.73 0 0.86 0.05 0.96 1.0 0.048 35.91 52.64 0.080 1.66 0.91 0.24 0.80 1.00 1.0 0.040 5.36 89.70 0.147 3.73 2.70 2 9.78 538 1.8E-03 5.1E+02 3.3E-04 16 0.485 5313 0.09% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.35% 0.0038
21.817 5594.04 16.9 0.422 16.5 68.7 29.77 2.50%Slime Tailings 0.057 113.1 1.17 0.32 0.85 1 1.01 16.669 231.70 19.86 19 2.68% 2.8 71% 1.74 0.00 1.74 0 0.86 0.05 0.96 1.0 0.048 37.01 56.87 0.084 1.76 0.91 0.26 0.80 1.00 1.0 0.040 4.38 86.93 0.141 3.56 2.66 2 9.83 538 1.8E-03 5.1E+02 3.3E-04 16 0.485 5301 0.09% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.37% 0.0039
21.981 5593.88 21.8 0.335 21.7 23.7 10.26 1.54%Sand-Slime Tailing 0.059 119.0 1.18 0.32 0.85 1 1.01 21.800 303.01 25.49 24 1.62% 2.5 47% 1.75 0.00 1.75 0 0.86 0.06 0.96 1.0 0.048 39.24 64.73 0.093 1.95 0.91 0.29 0.80 1.00 1.0 0.040 2.93 74.56 0.119 2.98 2.47 2 9.88 538 1.8E-03 5.3E+02 3.2E-04 10 0.234 6415 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.98% 0.0032
22.145 5593.71 21.8 0.428 21.7 22.3 9.65 1.96%Sand-Slime Tailing 0.059 119.0 1.18 0.33 0.86 1 1.00 21.771 302.62 25.45 24 2.07% 2.6 47% 1.76 0.00 1.76 0 0.86 0.06 0.96 1.0 0.048 39.23 64.67 0.093 1.95 0.91 0.29 0.80 1.00 1.0 0.040 3.28 83.48 0.134 3.36 2.66 2 9.93 538 1.8E-03 5.3E+02 3.2E-04 10 0.235 6400 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 2.00% 0.0033
22.309 5593.55 17.7 0.439 17.6 19.7 8.53 2.48%Sand-Slime Tailing 0.059 119.0 1.19 0.33 0.86 1 1.00 17.547 243.90 20.52 19 2.66% 2.7 47% 1.77 0.00 1.77 0 0.86 0.05 0.96 1.0 0.048 37.50 58.02 0.086 1.80 0.91 0.26 0.80 1.00 1.0 0.040 4.28 87.80 0.143 3.57 2.68 2 9.98 538 1.8E-03 5.3E+02 3.2E-04 10 0.235 6385 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 2.02% 0.0033
22.473 5593.39 16.8 0.471 16.6 34.2 14.81 2.80%Slime Tailings 0.057 113.1 1.20 0.34 0.87 1 0.99 16.546 229.99 19.46 18 3.01% 2.8 71% 1.78 0.00 1.78 0 0.86 0.05 0.96 1.0 0.048 36.87 56.33 0.084 1.76 0.91 0.25 0.80 1.00 1.0 0.040 4.70 91.53 0.151 3.76 2.76 2 10.03 538 1.8E-03 5.1E+02 3.4E-04 16 0.486 5254 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.46% 0.0040
22.638 5593.22 19.3 0.376 19.1 34.2 14.81 1.95%Sand-Slime Tailing 0.059 119.0 1.21 0.34 0.87 1 0.99 18.876 262.38 22.17 21 2.08% 2.6 47% 1.79 0.00 1.79 0 0.85 0.05 0.96 1.0 0.047 38.08 60.25 0.088 1.86 0.90 0.27 0.80 1.00 1.0 0.040 3.63 80.39 0.128 3.18 2.52 2 10.08 538 1.8E-03 5.3E+02 3.3E-04 10 0.236 6357 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.07% 0.0034
22.802 5593.06 15.1 0.327 14.7 65.1 28.22 2.17%Sand-Slime Tailing 0.059 119.0 1.22 0.35 0.88 1 0.99 14.455 200.93 17.25 16 2.36% 2.8 47% 1.80 0.00 1.80 0 0.85 0.05 0.96 1.0 0.047 36.35 53.61 0.081 1.71 0.90 0.24 0.80 1.00 1.0 0.040 4.57 78.92 0.126 3.10 2.40 2 10.13 538 1.8E-03 5.3E+02 3.3E-04 10 0.236 6343 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.09% 0.0034
22.966 5592.89 12.6 0.218 11.9 111.5 48.31 1.73%Sand-Slime Tailing 0.059 119.0 1.23 0.35 0.88 1 0.98 11.703 162.67 14.39 13 1.92% 2.8 47% 1.81 0.00 1.81 0 0.85 0.05 0.96 1.0 0.047 35.35 49.73 0.077 1.63 0.90 0.22 0.80 1.00 1.0 0.040 4.76 68.44 0.110 2.70 2.16 2 10.18 538 1.8E-03 5.3E+02 3.3E-04 10 0.236 6328 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.12% 0.0035
23.130 5592.73 12.0 0.226 11.4 106.7 46.22 1.88%Sand-Slime Tailing 0.059 119.0 1.24 0.36 0.89 1 0.98 11.107 154.39 13.66 12 2.10% 2.8 47% 1.82 0.00 1.82 0 0.85 0.05 0.96 1.0 0.047 35.09 48.75 0.076 1.61 0.90 0.21 0.80 0.99 1.0 0.040 5.13 70.08 0.112 2.74 2.18 2 10.23 538 1.8E-03 5.3E+02 3.3E-04 10 0.237 6314 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.14% 0.0035
23.294 5592.57 14.5 0.334 13.6 154.3 66.85 2.30%Sand-Slime Tailing 0.059 119.0 1.25 0.36 0.89 1 0.97 13.235 183.97 16.46 15 2.51% 2.8 47% 1.83 0.00 1.83 0 0.85 0.05 0.96 1.0 0.047 36.08 52.54 0.080 1.69 0.90 0.23 0.80 0.99 1.0 0.040 4.87 80.16 0.128 3.12 2.41 2 10.28 538 1.8E-03 5.3E+02 3.3E-04 10 0.237 6300 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.16% 0.0035
23.458 5592.40 17.3 0.173 16.5 120.2 52.09 1.00%Sand-Slime Tailing 0.059 119.0 1.26 0.37 0.89 1 0.97 16.025 222.75 19.46 18 1.08% 2.5 47% 1.84 0.00 1.84 0 0.85 0.05 0.96 1.0 0.047 37.13 56.58 0.084 1.79 0.90 0.25 0.80 0.99 1.0 0.040 3.02 58.77 0.099 2.40 2.10 2 10.33 538 1.8E-03 5.3E+02 3.4E-04 10 0.237 6286 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.19% 0.0036
23.622 5592.24 26.9 0.267 26.6 51.3 22.22 0.99%Sand-Slime Tailing 0.059 119.0 1.27 0.37 0.90 1 0.97 25.759 358.04 30.28 29 1.04% 2.4 47% 1.85 0.00 1.85 0 0.85 0.06 0.95 1.0 0.047 40.92 71.20 0.101 2.16 0.90 0.32 0.80 0.99 1.0 0.040 2.17 65.84 0.107 2.58 2.37 2 10.38 538 1.8E-03 5.3E+02 3.4E-04 10 0.237 6273 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.21% 0.0036
23.786 5592.07 18.3 0.357 17.9 69.4 30.09 1.95%Sand-Slime Tailing 0.059 119.0 1.28 0.38 0.90 1 0.96 17.187 238.90 20.45 19 2.10% 2.7 47% 1.86 0.00 1.86 0 0.85 0.05 0.96 1.0 0.047 37.47 57.92 0.086 1.83 0.90 0.26 0.80 0.99 1.0 0.040 3.87 79.22 0.126 3.05 2.44 2 10.43 538 1.8E-03 5.3E+02 3.4E-04 10 0.238 6259 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.23% 0.0037
23.950 5591.91 13.8 0.283 13.3 90.4 39.18 2.05%Sand-Slime Tailing 0.059 119.0 1.29 0.38 0.91 1 0.96 12.716 176.76 15.40 14 2.26% 2.8 47% 1.87 0.00 1.87 0 0.84 0.05 0.96 1.0 0.047 35.70 51.10 0.079 1.67 0.89 0.23 0.80 0.99 1.0 0.040 4.89 75.23 0.120 2.88 2.27 2 10.48 538 1.8E-03 5.3E+02 3.4E-04 10 0.238 6245 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.26% 0.0037
24.114 5591.75 10.3 0.189 10.0 60.4 26.18 1.83%Sand-Slime Tailing 0.059 119.0 1.30 0.39 0.91 1 0.96 9.514 132.24 11.47 10 2.09% 2.9 47% 1.88 0.00 1.88 0 0.84 0.05 0.96 1.0 0.047 34.32 45.79 0.074 1.57 0.89 0.20 0.80 0.99 1.0 0.040 5.85 67.03 0.108 2.59 2.08 2 10.53 538 1.8E-03 5.3E+02 3.4E-04 10 0.238 6232 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.28% 0.0037
24.278 5591.58 10.0 0.219 9.3 112.2 48.61 2.19%Slime Tailings 0.057 113.1 1.31 0.39 0.92 1 0.95 8.871 123.30 11.08 9 2.51% 3.0 71% 1.89 0.00 1.89 0 0.84 0.05 0.96 1.0 0.047 33.95 45.02 0.073 1.55 0.89 0.19 0.80 0.99 1.0 0.040 6.45 71.42 0.114 2.72 2.14 2 10.58 538 1.8E-03 5.1E+02 3.6E-04 16 0.490 5129 0.10% 2.00 0.65 0.03% 0.018 0.34 0.079 0.765 2.73% 0.0045
24.442 5591.42 14.0 0.326 13.2 122.0 52.86 2.33%Slime Tailings 0.057 113.1 1.32 0.40 0.92 1 0.95 12.529 174.15 15.39 14 2.58% 2.8 71% 1.90 0.00 1.90 0 0.84 0.05 0.96 1.0 0.047 35.45 50.84 0.078 1.68 0.89 0.23 0.80 0.99 1.0 0.040 5.19 79.86 0.127 3.03 2.36 2 10.63 538 1.8E-03 5.1E+02 3.6E-04 16 0.490 5119 0.10% 2.00 0.65 0.03% 0.018 0.34 0.079 0.765 2.75% 0.0045
24.606 5591.25 14.1 0.236 13.7 63.7 27.60 1.67%Sand-Slime Tailing 0.059 119.0 1.33 0.40 0.93 1 0.94 12.962 180.17 15.49 14 1.85% 2.8 47% 1.91 0.00 1.91 0 0.84 0.05 0.96 1.0 0.047 35.73 51.22 0.079 1.69 0.89 0.23 0.80 0.99 1.0 0.040 4.48 69.42 0.111 2.64 2.16 2 10.68 538 1.8E-03 5.3E+02 3.5E-04 10 0.239 6193 0.09% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.35% 0.0039
24.770 5591.09 23.3 0.448 22.8 72.8 31.55 1.92%Sand-Slime Tailing 0.059 119.0 1.34 0.41 0.93 1 0.94 21.533 299.31 25.51 24 2.04% 2.6 47% 1.92 0.00 1.92 0 0.84 0.06 0.96 1.0 0.046 39.25 64.75 0.093 2.02 0.89 0.29 0.80 0.98 1.0 0.040 3.30 84.25 0.136 3.21 2.61 2 10.73 594 1.8E-03 6.5E+02 2.9E-04 10 0.240 6180 0.06% 2.00 0.65 0.03% 0.009 0.34 0.079 0.765 1.42% 0.0023
24.934 5590.93 29.6 0.313 29.2 58.1 25.19 1.06%Sand-Slime Tailing 0.059 119.0 1.35 0.41 0.94 1 0.94 27.544 382.86 32.39 30 1.11% 2.4 47% 1.93 0.00 1.93 0 0.84 0.06 0.95 1.0 0.046 41.66 74.05 0.105 2.28 0.89 0.33 0.80 0.98 1.0 0.040 2.15 69.61 0.111 2.62 2.45 2 10.78 594 1.8E-03 6.5E+02 2.9E-04 10 0.240 6167 0.06% 2.00 0.65 0.03% 0.009 0.34 0.079 0.765 1.43% 0.0024
25.098 5590.76 38.5 0.429 38.5 11.6 5.02 1.11%Sand-Slime Tailing 0.059 119.0 1.36 0.42 0.94 1 0.94 36.269 504.14 42.20 40 1.15% 2.3 47% 1.94 0.00 1.94 0 0.83 0.07 0.95 1.0 0.046 45.10 87.31 0.123 2.69 0.88 0.38 0.80 0.98 1.0 0.040 1.86 78.30 0.125 2.93 2.81 2 10.83 594 1.8E-03 6.5E+02 2.9E-04 10 0.240 6154 0.06% 2.00 0.65 0.03% 0.009 0.34 0.079 0.765 1.45% 0.0024
25.262 5590.60 30.5 0.493 30.4 9.2 3.99 1.62%Sand-Slime Tailing 0.059 119.0 1.37 0.42 0.94 1 0.94 28.493 396.05 33.16 31 1.69% 2.5 47% 1.94 0.00 1.94 0 0.83 0.06 0.95 1.0 0.046 41.93 75.08 0.106 2.32 0.88 0.33 0.80 0.98 1.0 0.040 2.55 84.46 0.136 3.18 2.75 2 10.88 594 1.8E-03 6.5E+02 2.9E-04 10 0.241 6141 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.47% 0.0024
25.426 5590.43 25.9 0.457 25.8 10.7 4.64 1.77%Sand-Slime Tailing 0.059 119.0 1.38 0.43 0.95 1 0.93 23.999 333.59 27.95 26 1.87% 2.5 47% 1.95 0.00 1.95 0 0.83 0.06 0.95 1.0 0.046 40.10 68.05 0.097 2.12 0.88 0.31 0.80 0.98 1.0 0.040 2.99 83.54 0.134 3.13 2.63 2 10.93 594 1.8E-03 6.5E+02 2.9E-04 10 0.241 6129 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.49% 0.0024
25.590 5590.27 23.2 0.409 23.0 38.5 16.67 1.76%Sand-Slime Tailing 0.059 119.0 1.39 0.43 0.95 1 0.93 21.279 295.77 24.97 23 1.87% 2.6 47% 1.96 0.00 1.96 0 0.83 0.06 0.95 1.0 0.046 39.06 64.03 0.092 2.02 0.88 0.29 0.80 0.98 1.0 0.040 3.23 80.75 0.129 3.00 2.51 2 10.98 594 1.8E-03 6.5E+02 2.9E-04 10 0.241 6116 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.50% 0.0025
25.754 5590.11 23.9 0.457 23.6 50.5 21.90 1.91%Sand-Slime Tailing 0.059 119.0 1.40 0.44 0.96 1 0.92 21.735 302.12 25.58 23 2.03% 2.6 47% 1.97 0.00 1.97 0 0.83 0.06 0.95 1.0 0.046 39.27 64.86 0.093 2.04 0.88 0.29 0.80 0.98 1.0 0.040 3.31 84.64 0.136 3.16 2.60 2 11.03 594 1.8E-03 6.5E+02 3.0E-04 10 0.241 6104 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.52% 0.0025
25.918 5589.94 23.4 0.409 22.9 85.5 37.03 1.75%Sand-Slime Tailing 0.059 119.0 1.41 0.44 0.96 1 0.92 21.004 291.95 24.96 23 1.86% 2.6 47% 1.98 0.00 1.98 0 0.83 0.06 0.95 1.0 0.046 39.06 64.02 0.092 2.03 0.88 0.29 0.80 0.98 1.0 0.040 3.23 80.65 0.129 2.97 2.50 2 11.08 594 1.8E-03 6.5E+02 3.0E-04 10 0.242 6091 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.54% 0.0025
26.082 5589.78 26.8 0.466 26.4 63.1 27.33 1.74%Sand-Slime Tailing 0.059 119.0 1.42 0.45 0.97 1 0.92 24.200 336.38 28.53 26 1.84% 2.5 47% 1.99 0.00 1.99 0 0.83 0.06 0.95 1.0 0.045 40.31 68.83 0.098 2.16 0.88 0.31 0.80 0.98 1.0 0.040 2.94 83.82 0.135 3.10 2.63 2 11.13 594 1.8E-03 6.5E+02 3.0E-04 10 0.242 6079 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.56% 0.0026
26.246 5589.61 24.8 0.467 24.4 58.0 25.13 1.89%Sand-Slime Tailing 0.059 119.0 1.43 0.46 0.97 1 0.91 22.278 309.67 26.26 24 2.00% 2.6 47% 2.00 0.00 2.00 0 0.82 0.06 0.95 1.0 0.045 39.51 65.77 0.094 2.08 0.88 0.30 0.80 0.98 1.0 0.040 3.24 84.96 0.137 3.14 2.61 2 11.18 594 1.8E-03 6.5E+02 3.0E-04 10 0.242 6066 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.57% 0.0026
26.410 5589.45 27.9 0.443 27.7 46.7 20.25 1.59%Sand-Slime Tailing 0.059 119.0 1.44 0.46 0.98 1 0.91 25.216 350.50 29.60 27 1.67% 2.5 47% 2.01 0.00 2.01 0 0.82 0.06 0.95 1.0 0.045 40.68 70.28 0.100 2.21 0.87 0.31 0.80 0.98 1.0 0.040 2.75 81.34 0.130 2.97 2.59 2 11.23 594 1.8E-03 6.5E+02 3.0E-04 10 0.243 6054 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.59% 0.0026
26.574 5589.29 21.4 0.459 21.2 34.8 15.06 2.15%Sand-Slime Tailing 0.059 119.0 1.45 0.47 0.98 1 0.90 19.114 265.68 22.43 20 2.30% 2.7 47% 2.02 0.00 2.02 0 0.82 0.05 0.95 1.0 0.045 38.17 60.59 0.089 1.95 0.87 0.27 0.80 0.97 1.0 0.040 3.85 86.38 0.140 3.19 2.57 2 11.28 594 1.8E-03 6.5E+02 3.0E-04 10 0.243 6042 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.61% 0.0026
26.739 5589.12 22.9 0.449 22.4 91.9 39.81 1.96%Sand-Slime Tailing 0.059 119.0 1.46 0.47 0.99 1 0.90 20.162 280.25 24.02 22 2.09% 2.6 47% 2.03 0.00 2.03 0 0.82 0.06 0.95 1.0 0.045 38.72 62.74 0.091 2.01 0.87 0.28 0.80 0.97 1.0 0.039 3.52 84.47 0.136 3.09 2.55 2 11.33 594 1.8E-03 6.5E+02 3.0E-04 10 0.243 6030 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.63% 0.0027
26.903 5588.96 23.7 0.369 23.3 57.9 25.11 1.56%Sand-Slime Tailing 0.059 119.0 1.47 0.48 0.99 1 0.90 20.966 291.42 24.73 22 1.66% 2.6 47% 2.04 0.00 2.04 1 0.82 0.06 0.95 1.0 0.045 38.97 63.70 0.092 2.04 0.87 0.29 0.80 0.97 1.0 0.039 3.10 76.78 0.122 2.76 2.40 2 11.38 594 1.8E-03 6.5E+02 3.1E-04 10 0.244 6020 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.64% 0.0027
27.067 5588.79 17.9 0.322 17.4 76.8 33.26 1.80%Sand-Slime Tailing 0.059 119.0 1.48 0.48 1.00 1 0.89 15.524 215.78 18.53 16 1.96% 2.7 47% 2.05 0.01 2.05 1 0.82 0.05 0.96 1.0 0.045 36.80 55.33 0.083 1.83 0.87 0.25 0.80 0.97 1.0 0.040 4.10 75.99 0.121 2.72 2.27 2 11.43 594 1.8E-03 6.5E+02 3.1E-04 10 0.244 6014 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.66% 0.0027
27.231 5588.63 17.2 0.221 16.6 101.5 44.00 1.29%Sand-Slime Tailing 0.059 119.0 1.49 0.49 1.00 1 0.89 14.729 204.74 17.76 16 1.41% 2.7 47% 2.06 0.01 2.05 1 0.82 0.05 0.96 1.0 0.045 36.53 54.29 0.082 1.80 0.87 0.24 0.80 0.97 1.0 0.040 3.67 65.24 0.106 2.37 2.08 2 11.48 594 1.8E-03 6.5E+02 3.1E-04 10 0.244 6009 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.68% 0.0028
27.395 5588.47 17.3 0.221 16.7 96.1 41.66 1.28%Sand-Slime Tailing 0.059 119.0 1.50 0.49 1.00 1 0.89 14.791 205.60 17.80 16 1.40% 2.7 47% 2.07 0.02 2.05 1 0.82 0.05 0.96 1.0 0.045 36.54 54.34 0.082 1.80 0.87 0.24 0.80 0.97 1.0 0.040 3.66 65.18 0.106 2.35 2.08 2 11.53 594 1.8E-03 6.5E+02 3.1E-04 10 0.244 6003 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.70% 0.0028
27.559 5588.30 17.1 0.300 16.3 130.8 56.69 1.75%Sand-Slime Tailing 0.059 119.0 1.51 0.50 1.01 1 0.88 14.394 200.07 17.55 15 1.92% 2.7 47% 2.08 0.02 2.06 1 0.81 0.05 0.96 1.0 0.045 36.46 54.01 0.081 1.79 0.86 0.24 0.80 0.97 1.0 0.040 4.23 74.31 0.118 2.61 2.20 2 11.58 594 1.8E-03 6.5E+02 3.1E-04 10 0.244 5997 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.72% 0.0028
27.723 5588.14 24.2 0.427 23.2 165.1 71.55 1.76%Sand-Slime Tailing 0.059 119.0 1.52 0.50 1.01 1 0.88 20.498 284.93 24.87 22 1.88% 2.6 47% 2.09 0.03 2.06 1 0.81 0.06 0.95 1.0 0.045 39.02 63.89 0.092 2.04 0.86 0.29 0.80 0.97 1.0 0.040 3.29 81.72 0.131 2.88 2.46 2 11.63 594 1.8E-03 6.5E+02 3.1E-04 10 0.244 5992 0.07% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.74% 0.0029
27.887 5587.97 31.6 0.511 31.4 40.1 17.37 1.62%Sand-Slime Tailing 0.059 119.0 1.53 0.51 1.02 1 0.89 27.813 386.60 32.56 30 1.70% 2.5 47% 2.10 0.03 2.07 1 0.81 0.06 0.95 1.0 0.045 41.72 74.28 0.105 2.33 0.86 0.33 0.80 0.97 1.0 0.040 2.62 85.37 0.138 3.02 2.67 2 11.68 594 1.8E-03 6.5E+02 3.1E-04 10 0.244 5986 0.07% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.76% 0.0029
28.051 5587.81 29.9 0.506 29.4 77.3 33.50 1.69%Sand-Slime Tailing 0.059 119.0 1.53 0.51 1.02 1 0.88 25.927 360.38 30.61 28 1.79% 2.5 47% 2.11 0.04 2.07 1 0.81 0.06 0.95 1.0 0.045 41.04 71.64 0.102 2.25 0.86 0.32 0.80 0.97 1.0 0.040 2.80 85.63 0.138 3.01 2.63 2 11.73 594 1.8E-03 6.5E+02 3.2E-04 10 0.245 5981 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.78% 0.0029
28.215 5587.65 34.1 0.485 33.8 56.5 24.47 1.42%Sand-Slime Tailing 0.059 119.0 1.54 0.52 1.03 1 0.88 29.829 414.63 35.01 32 1.49% 2.4 47% 2.12 0.04 2.08 1 0.81 0.06 0.95 1.0 0.045 42.58 77.59 0.109 2.43 0.86 0.34 0.80 0.97 1.0 0.040 2.36 82.64 0.132 2.87 2.65 2 11.78 594 1.8E-03 6.5E+02 3.2E-04 10 0.245 5975 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.80% 0.0029
28.379 5587.48 23.6 0.376 23.3 54.2 23.50 1.59%Sand-Slime Tailing 0.059 119.0 1.55 0.52 1.03 1 0.87 20.248 281.45 23.86 21 1.71% 2.6 47% 2.13 0.05 2.08 1 0.81 0.05 0.95 1.0 0.045 38.67 62.53 0.091 2.00 0.86 0.28 0.80 0.96 1.0 0.040 3.25 77.44 0.123 2.65 2.33 2 11.83 594 1.8E-03 6.5E+02 3.2E-04 10 0.245 5970 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.82% 0.0030
28.543 5587.32 20.0 0.587 19.3 110.3 47.80 2.94%Slime Tailings 0.057 113.1 1.56 0.53 1.04 1 0.86 16.699 232.11 20.09 18 3.18% 2.8 71% 2.14 0.05 2.09 1 0.81 0.05 0.95 1.0 0.046 37.08 57.17 0.085 1.86 0.86 0.26 0.80 0.96 1.0 0.040 4.87 97.86 0.167 3.58 2.72 2 11.88 594 1.8E-03 6.2E+02 3.4E-04 16 0.496 4922 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.21% 0.0036
28.707 5587.15 20.3 0.625 19.3 175.0 75.82 3.07%Slime Tailings 0.057 113.1 1.57 0.53 1.04 1 0.86 16.595 230.67 20.37 18 3.33% 2.8 71% 2.15 0.06 2.09 1 0.80 0.05 0.95 1.0 0.046 37.18 57.55 0.085 1.87 0.86 0.26 0.80 0.96 1.0 0.040 4.93 100.50 0.174 3.72 2.80 2 11.93 594 1.8E-03 6.2E+02 3.4E-04 16 0.496 4918 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.23% 0.0037
28.871 5586.99 70.9 0.744 70.3 91.2 39.52 1.05%Sand Tailings 0.062 123.5 1.58 0.54 1.05 1 0.90 63.004 875.75 73.77 66 1.07% 2.1 18% 2.16 0.06 2.10 1 0.80 0.09 0.92 1.0 0.044 40.95 114.71 0.169 3.83 0.85 0.50 0.75 0.95 1.0 0.041 1.40 103.45 0.183 3.88 3.85 2 11.98 594 1.9E-03 6.8E+02 3.1E-04 0 0.244 7534 0.09% 5.00 1.00 0.03% 0.003 0.34 0.079 0.765 0.45% 0.0007
29.035 5586.82 72.6 0.686 72.2 66.2 28.68 0.94%Sand Tailings 0.062 123.5 1.59 0.54 1.05 1 0.89 64.601 897.96 75.46 68 0.97% 2.0 18% 2.17 0.07 2.10 1 0.80 0.09 0.92 1.0 0.044 41.38 116.84 0.173 3.92 0.85 0.50 0.75 0.95 1.0 0.041 1.35 101.77 0.178 3.76 3.84 2 12.03 594 1.9E-03 6.8E+02 3.1E-04 0 0.245 7527 0.09% 5.00 1.00 0.03% 0.003 0.34 0.079 0.765 0.46% 0.0007
29.199 5586.66 79.5 1.181 79.4 15.5 6.72 1.49%Sand Tailings 0.062 123.5 1.60 0.55 1.06 1 0.90 71.104 988.34 82.68 74 1.52% 2.1 18% 2.18 0.07 2.11 1 0.80 0.09 0.92 1.0 0.044 43.23 125.91 0.193 4.40 0.85 0.52 0.74 0.95 1.0 0.041 1.51 124.72 0.260 5.46 4.93 2 12.08 594 1.9E-03 6.8E+02 3.1E-04 0 0.245 7519 0.09% 5.00 1.00 0.03% 0.003 0.34 0.079 0.765 0.46% 0.0008
29.363 5586.50 113.4 1.549 113.4 8.3 3.58 1.37%Sand Tailings 0.062 123.5 1.61 0.55 1.06 1 0.91 103.022 1432.01 119.71 105 1.39% 2.0 18% 2.19 0.08 2.11 1 0.80 0.12 0.89 1.0 0.043 52.69 172.40 0.433 10.18 0.85 0.63 0.68 0.94 1.0 0.042 1.28 153.66 0.417 8.71 9.44 2 12.13 594 1.9E-03 6.8E+02 3.2E-04 0 0.245 7512 0.09%5.00 1.00 0.03% 0.003 0.34 0.079 0.765 0.47% 0.0008
29.527 5586.33 133.5 2.246 133.4 9.1 3.95 1.68%Sand Tailings 0.062 123.5 1.62 0.56 1.07 1 0.91 122.058 1696.61 141.82 124 1.70% 2.0 18% 2.20 0.08 2.12 1 0.80 0.15 0.87 1.0 0.041 58.35 200.17 1.000 24.11 0.85 0.69 0.66 0.93 1.0 0.042 1.30 184.56 1.000 20.76 22.43 2 12.18 594 1.9E-03 6.8E+02 3.2E-04 0 0.245 7505 0.09%5.00 1.00 0.03% 0.003 0.34 0.079 0.765 0.48% 0.0008
29.691 5586.17 134.1 3.012 134.1 -0.7 -0.28 2.25%Sand-Slime Tailing 0.059 119.0 1.63 0.56 1.07 1 0.91 122.449 1702.04 142.21 124 2.27% 2.1 47% 2.21 0.09 2.12 1 0.80 0.15 0.87 1.0 0.041 80.18 222.39 1.000 24.12 0.85 0.69 0.66 0.93 1.0 0.042 1.44 205.32 1.000 20.66 22.39 2 12.23 594 1.8E-03 6.5E+02 3.3E-04 10 0.246 5925 0.07%2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.97% 0.0032
29.855 5586.00 114.2 2.896 114.0 26.4 11.45 2.54%Sand-Slime Tailing 0.059 119.0 1.64 0.57 1.08 1 0.90 102.984 1431.48 119.78 105 2.57% 2.2 47% 2.22 0.09 2.13 1 0.79 0.12 0.89 1.0 0.043 72.31 192.09 0.813 19.11 0.85 0.63 0.68 0.93 1.0 0.042 1.62 194.57 1.000 20.55 19.83 2 12.28 594 1.8E-03 6.5E+02 3.3E-04 10 0.246 5920 0.07%2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.99% 0.0033
30.019 5585.84 179.1 2.896 178.1 160.2 69.40 1.62%Sand Tailings 0.062 123.5 1.65 0.57 1.08 1 0.93 164.913 2292.29 192.61 164 1.63% 1.9 18% 2.23 0.10 2.13 1 0.79 0.24 0.78 1.0 0.037 71.33 263.94 1.000 26.69 0.84 0.80 0.60 0.91 1.0 0.043 1.19 229.76 1.000 20.45 23.57 2 12.33 594 1.9E-03 6.8E+02 3.2E-04 0 0.245 7484 0.10%5.00 1.00 0.03% 0.003 0.34 0.079 0.765 0.50% 0.0008
30.183 5585.68 217.4 2.896 217.3 26.4 11.43 1.33%Sand Tailings 0.062 123.5 1.66 0.58 1.09 1 0.94 203.425 2827.61 236.45 199 1.34% 1.8 18% 2.24 0.10 2.14 1 0.79 0.30 0.73 1.0 0.035 82.54 318.98 1.000 28.64 0.84 0.89 0.60 0.91 1.0 0.043 1.10 259.26 1.000 20.34 24.49 2 12.38 594 1.9E-03 6.8E+02 3.2E-04 0 0.245 7477 0.10%5.00 1.00 0.03% 0.003 0.34 0.079 0.765 0.51% 0.0008
31.850 5584.01 Sand Tailings 0.062 123.5 2.34 0.13 2.21 1 12.88 594 1.9E-03 6.8E+02 3.4E-04 0 0.247 7369 0.11%5.00 1.00 0.03% 0.004 0.34 0.079 0.765 0.59% 0.0099
Extra layer added to analyze seismic settlement of tailings below the bottom of CPT investigation.
Liquef_SeismicSettle_30Aug2015.xls Page 11 of 29
Energy Fuels Resources (USA) Inc.White Mesa Mill
Seismic Settlement Analyses
Data File: 13-52106_SP2W6-S-BSC-CPT 5604.40 Water surface elevation during CPT investigation (ft 5615.85 Ground Surface Elevation at time of CPT (ft amsl)
Location: White Mesa 2013 CPT Investigation 0.15 5604.40 Water surface elevation at t0 (ft amsl)5625.41 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl)
..\..\..\6.2.3 Field Data\2013 Field Investigation\Conetec Dat 5.5 5588.59 Water surface elevation at t1 (ft amsl) 0.50 Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after pla ###### 5625.16 5624.91 0.50 0.055 110 0.028 0.014 0.00 0.00 0.028 0.014 0.08 508 1.7E-03 4.4E+02 3.0E-06 11 0.068 46696 0.00% 1.20 0.80 0.04% 0.000 0.32 0.133 0.778 0.00% 0.0000
Tailings Sands 1.69 5583.59 Water surface elevation at t2 (ft amsl)3.50 Thickness of Water Storage/Rooting Zone (ft)###### 5623.16 5621.41 3.50 0.054 107 0.215 0.121 0.00 0.00 0.215 0.121 0.69 508 1.7E-03 4.3E+02 2.8E-05 11 0.118 18930 0.00% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
Tailings Sand-Slimes 4.00 Thickness of High Compaction Layer (ft)###### 5619.41 5617.41 4.00 0.060 120 0.454 0.334 0.00 0.00 0.454 0.334 1.83 508 1.9E-03 4.8E+02 6.8E-05 11 0.153 12419 0.01% 0.65 0.75 0.02% 0.000 0.34 0.079 0.765 0.00% 0.0000
Tailings Slimes 1.44 1.56 Thickness of Random/Platform Fill on on top of existing interim cover (ft) ###### 5616.63 5615.85 1.56 0.050 101 0.533 0.493 0.00 0.00 0.533 0.493 2.68 508 1.6E-03 4.0E+02 1.2E-04 11 0.169 10568 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
Interim Cover 0.47 1065.26 Additional Stress due to Final Cover Placement, ΔσFC (psf)
Cells Requiring User Input/Manipulation 2.21 2.21 7.51 5583.59 Elevation of bottom of tailings (liner) (ft amsl)
0.481
rd Cσ Kσ Ka rd Dr f Kσ Ka Avg
(ft) (ft amsl) TSF TSF TSF (ft) PSI (%) (tcf) (pcf) (tsf)(tsf)(tsf) 1=Yes TSF MPa % (tsf)(tsf)(tsf) 1=Yes FoS m
0=No 0=No (ft/sec) (tcf) tsf tsf (%)
0.164 5615.69 6.5 0.020 6.5 1.2 0.51 0.31%Interim Cover 0.050 100.7 0.01 0.00 0.01 0 1.70 11.067 153.83 12.87 788 0.31% 0.9 51% 0.54 0.00 0.54 0 1.00 0.05 1.02 1.0 0.059 34.84 47.70 0.075 1.27 0.98 0.21 0.80 2.53 1.0 0.017 1.00 12.87 0.061 3.63 2.45 2 2.96 594 1.6E-03 5.5E+02 9.6E-05 11 0.173 10172 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
0.328 5615.52 22.2 0.060 22.2 2.8 1.22 0.27%Interim Cover 0.050 100.7 0.02 0.00 0.02 0 1.70 37.723 524.35 43.85 1343 0.27% 0.7 51% 0.55 0.00 0.55 0 1.00 0.07 1.03 1.0 0.060 45.71 89.56 0.126 2.12 0.98 0.38 0.80 2.20 1.0 0.020 1.00 43.85 0.087 4.59 3.35 2 3.01 594 1.6E-03 5.5E+02 9.7E-05 11 0.174 10108 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
0.492 5615.36 34.7 0.122 34.7 1.7 0.75 0.35%Interim Cover 0.050 100.7 0.02 0.00 0.02 0 1.70 58.973 819.72 68.51 1399 0.35% 0.8 51% 0.56 0.00 0.56 0 1.00 0.08 1.04 1.0 0.060 54.36 122.88 0.186 3.10 0.98 0.48 0.76 2.33 1.0 0.018 1.00 68.51 0.110 5.44 4.27 2 3.06 594 1.6E-03 5.5E+02 9.8E-05 11 0.175 10045 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
0.656 5615.19 54.7 0.219 54.6 1.9 0.81 0.40%Interim Cover 0.050 100.7 0.03 0.00 0.03 0 1.70 92.888 1291.14 107.91 1653 0.40% 0.9 51% 0.57 0.00 0.57 0 1.00 0.11 1.05 1.0 0.061 68.19 176.10 0.478 7.90 0.98 0.60 0.70 2.66 1.0 0.016 1.00 107.91 0.197 119.17 63.53 2 3.11 594 1.6E-03 5.5E+02 1.0E-04 11 0.175 9984 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
0.820 5615.03 83.1 0.349 83.1 2.0 0.85 0.42%Interim Cover 0.050 100.7 0.04 0.00 0.04 0 1.70 141.202 1962.71 164.02 2010 0.42% 0.9 51% 0.57 0.00 0.57 0 1.00 0.18 1.07 1.0 0.062 87.88 251.90 1.000 16.11 0.98 0.74 0.63 3.07 1.0 0.014 1.00 164.02 1.000 484.49 250.30 2 3.16 594 1.6E-03 5.5E+02 1.0E-04 11 0.176 9924 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
0.984 5614.87 94.0 0.544 94.0 2.0 0.85 0.58%Interim Cover 0.050 100.7 0.05 0.00 0.05 0 1.70 159.715 2220.04 185.52 1895 0.58% 1.0 51% 0.58 0.00 0.58 0 1.00 0.22 1.09 1.0 0.063 95.43 280.95 1.000 15.90 0.98 0.79 0.61 3.07 1.0 0.014 1.00 185.52 1.000 403.90 209.90 2 3.21 594 1.6E-03 5.5E+02 1.0E-04 11 0.177 9865 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.148 5614.70 94.8 0.470 94.8 2.0 0.87 0.50%Interim Cover 0.050 100.7 0.06 0.00 0.06 0 1.70 161.126 2239.65 187.16 1638 0.50% 1.0 51% 0.59 0.00 0.59 0 1.00 0.23 1.09 1.0 0.063 96.00 283.16 1.000 15.93 0.98 0.79 0.61 2.91 1.0 0.015 1.00 187.16 1.000 346.34 181.13 2 3.26 594 1.6E-03 5.5E+02 1.0E-04 11 0.177 9808 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.312 5614.54 92.2 0.392 92.2 1.8 0.77 0.43%Interim Cover 0.050 100.7 0.07 0.00 0.07 0 1.70 156.689 2177.98 182.01 1394 0.43% 0.9 51% 0.60 0.00 0.60 0 1.00 0.22 1.08 1.0 0.062 94.19 276.20 1.000 16.04 0.97 0.78 0.61 2.72 1.0 0.016 1.00 182.01 1.000 303.16 159.60 2 3.31 594 1.6E-03 5.5E+02 1.1E-04 11 0.178 9751 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.476 5614.37 90.8 0.315 90.8 0.7 0.29 0.35%Interim Cover 0.050 100.7 0.07 0.00 0.07 0 1.70 154.309 2144.90 179.23 1220 0.35% 0.9 51% 0.61 0.00 0.61 0 1.00 0.21 1.07 1.0 0.062 93.22 272.45 1.000 16.12 0.97 0.77 0.61 2.58 1.0 0.017 1.00 179.23 1.000 269.58 142.85 2 3.36 594 1.6E-03 5.5E+02 1.1E-04 11 0.179 9696 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.640 5614.21 85.8 0.359 85.8 4.3 1.87 0.42%Interim Cover 0.050 100.7 0.08 0.00 0.08 0 1.70 145.843 2027.22 169.44 1038 0.42% 1.0 51% 0.62 0.00 0.62 0 1.00 0.19 1.06 1.0 0.062 89.78 259.22 1.000 16.26 0.97 0.75 0.62 2.41 1.0 0.018 1.00 169.44 1.000 242.72 129.49 2 3.41 594 1.6E-03 5.5E+02 1.1E-04 11 0.179 9642 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.804 5614.05 83.8 0.375 83.8 2.0 0.86 0.45%Interim Cover 0.050 100.7 0.09 0.00 0.09 0 1.70 142.375 1979.01 165.38 921 0.45% 1.0 51% 0.62 0.00 0.62 0 1.00 0.18 1.06 1.0 0.061 88.36 253.74 1.000 16.33 0.97 0.74 0.63 2.30 1.0 0.019 1.00 165.38 1.000 220.74 118.54 2 3.46 594 1.6E-03 5.5E+02 1.1E-04 11 0.180 9589 0.01%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.968 5613.88 76.6 0.445 76.6 1.8 0.79 0.58%Interim Cover 0.050 100.7 0.10 0.00 0.10 0 1.70 130.135 1808.88 151.17 771 0.58% 1.1 51% 0.63 0.00 0.63 0 1.00 0.16 1.05 1.0 0.061 83.37 234.54 1.000 16.49 0.97 0.71 0.65 2.15 1.0 0.020 1.00 151.17 0.401 81.22 48.86 2 3.51 594 1.6E-03 5.5E+02 1.1E-04 11 0.180 9536 0.01%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.133 5613.72 61.3 0.546 61.3 1.1 0.47 0.89%Interim Cover 0.050 100.7 0.11 0.00 0.11 0 1.70 104.159 1447.81 120.99 570 0.89% 1.4 51% 0.64 0.00 0.64 0 1.00 0.13 1.04 1.0 0.060 72.78 193.77 0.869 14.52 0.97 0.64 0.68 1.94 1.0 0.022 1.00 120.99 0.245 45.74 30.13 2 3.56 594 1.6E-03 5.5E+02 1.1E-04 11 0.181 9485 0.01%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.297 5613.55 64.2 0.470 64.2 1.8 0.79 0.73%Interim Cover 0.050 100.7 0.12 0.00 0.12 0 1.70 109.123 1516.81 126.76 554 0.73% 1.3 51% 0.65 0.00 0.65 0 1.00 0.13 1.04 1.0 0.060 74.81 201.57 1.000 16.72 0.97 0.65 0.67 1.92 1.0 0.022 1.00 126.76 0.269 46.79 31.75 2 3.61 594 1.6E-03 5.5E+02 1.1E-04 11 0.182 9435 0.01%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.461 5613.39 68.7 0.730 68.7 2.8 1.20 1.06%Interim Cover 0.050 100.7 0.12 0.00 0.12 0 1.70 116.807 1623.62 135.70 554 1.06% 1.4 51% 0.66 0.00 0.66 0 1.00 0.14 1.04 1.0 0.060 77.94 213.64 1.000 16.72 0.97 0.67 0.66 1.92 1.0 0.022 1.00 135.70 0.312 50.65 33.68 2 3.66 594 1.6E-03 5.5E+02 1.2E-04 11 0.182 9385 0.02%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.625 5613.23 191.6 1.300 191.6 4.3 1.85 0.68%Interim Cover 0.050 100.7 0.13 0.00 0.13 0 1.64 314.125 4366.34 364.89 1449 0.68% 1.1 51% 0.66 0.00 0.66 0 1.00 0.30 1.08 1.0 0.062 ##### 523.26 1.000 16.12 0.97 1.10 0.60 2.12 1.0 0.020 1.00 364.89 1.000 152.06 84.09 2 3.71 594 1.6E-03 5.5E+02 1.2E-04 11 0.183 9337 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.789 5613.06 241.3 3.362 241.3 3.2 1.37 1.39%Interim Cover 0.050 100.7 0.14 0.00 0.14 0 1.61 389.250 5410.57 452.13 1717 1.39% 1.4 51% 0.67 0.00 0.67 0 0.99 0.30 1.07 1.0 0.062 ##### 641.11 1.000 16.19 0.97 1.23 0.60 2.07 1.0 0.021 1.00 452.13 1.000 143.17 79.68 2 3.76 594 1.6E-03 5.5E+02 1.2E-04 11 0.183 9289 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.953 5612.90 265.3 5.646 265.3 4.3 1.85 2.13%Interim Cover 0.050 100.7 0.15 0.00 0.15 0 1.59 421.663 5861.12 489.79 1783 2.13% 1.6 51% 0.68 0.00 0.68 0 0.99 0.30 1.07 1.0 0.061 ##### 691.99 1.000 16.26 0.97 1.28 0.60 2.02 1.0 0.021 1.00 489.79 1.000 135.27 75.77 2 3.81 594 1.6E-03 5.5E+02 1.2E-04 11 0.184 9242 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
3.117 5612.73 238.5 7.457 238.5 2.5 1.06 3.13%Interim Cover 0.050 100.7 0.16 0.00 0.16 0 1.57 373.653 5193.78 434.00 1518 3.13% 1.7 51% 0.69 0.00 0.69 0 0.99 0.30 1.07 1.0 0.061 ##### 616.63 1.000 16.33 0.97 1.20 0.60 1.98 1.0 0.022 1.06 461.98 1.000 128.20 72.27 2 3.86 495 1.6E-03 3.8E+02 1.8E-04 11 0.185 9196 0.03% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
3.281 5612.57 217.3 7.057 217.3 1.3 0.58 3.25%Sand-Slime Tailing 0.047 93.3 0.16 0.00 0.16 0 1.55 336.251 4673.89 390.55 1319 3.25% 1.8 47% 0.70 0.00 0.70 0 0.99 0.30 1.06 1.0 0.061 ##### 557.82 1.000 16.40 0.97 1.14 0.60 1.94 1.0 0.022 1.08 423.01 1.000 122.29 69.34 2 3.91 495 1.4E-03 3.5E+02 1.9E-04 10 0.185 9397 0.03%2.00 0.65 0.03% 0.003 0.34 0.079 0.765 0.44% 0.0007
3.445 5612.41 217.9 6.621 217.9 0.9 0.38 3.04%Sand-Slime Tailing 0.047 93.3 0.17 0.00 0.17 0 1.53 333.101 4630.11 386.89 1264 3.04% 1.7 47% 0.70 0.00 0.70 0 0.99 0.30 1.06 1.0 0.061 ##### 552.87 1.000 16.46 0.97 1.14 0.60 1.90 1.0 0.022 1.07 412.59 1.000 116.91 66.68 2 3.96 495 1.4E-03 3.5E+02 1.9E-04 10 0.186 9355 0.03%2.00 0.65 0.03% 0.003 0.34 0.079 0.765 0.48% 0.0008
3.609 5612.24 256.0 7.793 256.0 1.4 0.59 3.04%Sand-Slime Tailing 0.047 93.3 0.18 0.00 0.18 0 1.51 386.904 5377.97 449.38 1422 3.05% 1.7 47% 0.71 0.00 0.71 0 0.99 0.30 1.06 1.0 0.061 ##### 637.29 1.000 16.53 0.97 1.22 0.60 1.87 1.0 0.023 1.06 476.39 1.000 111.98 64.25 2 4.01 495 1.4E-03 3.5E+02 2.0E-04 10 0.187 9313 0.04%2.00 0.65 0.03% 0.003 0.34 0.079 0.765 0.52% 0.0009
3.773 5612.08 314.1 8.489 314.1 6.9 2.98 2.70%Sand Tailings 0.051 102.8 0.19 0.00 0.19 0 1.49 469.029 6519.50 544.82 1667 2.70% 1.7 18% 0.72 0.00 0.72 0 0.99 0.30 1.05 1.0 0.060 ##### 706.20 1.000 16.60 0.97 1.35 0.60 1.84 1.0 0.023 1.02 554.48 1.000 107.01 61.80 2 4.06 495 1.6E-03 3.9E+02 1.8E-04 0 0.191 11669 0.04% 2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.03% 0.0000
3.937 5611.91 227.8 8.106 227.7 12.0 5.18 3.56%Sand-Slime Tailing 0.047 93.3 0.20 0.00 0.20 0 1.48 336.474 4676.99 390.92 1161 3.56% 1.8 47% 0.73 0.00 0.73 0 0.99 0.30 1.05 1.0 0.060 ##### 558.33 1.000 16.66 0.97 1.14 0.60 1.81 1.0 0.024 1.12 437.65 1.000 102.87 59.77 2 4.11 495 1.4E-03 3.5E+02 2.0E-04 10 0.188 9227 0.04%2.00 0.65 0.03% 0.004 0.34 0.079 0.765 0.60% 0.0010
4.101 5611.75 218.4 6.483 218.4 6.5 2.83 2.97%Sand-Slime Tailing 0.047 93.3 0.20 0.00 0.20 0 1.46 319.444 4440.28 371.08 1072 2.97% 1.7 47% 0.74 0.00 0.74 0 0.99 0.30 1.05 1.0 0.060 ##### 531.53 1.000 16.73 0.97 1.11 0.60 1.78 1.0 0.024 1.07 397.43 1.000 99.05 57.89 2 4.16 495 1.4E-03 3.5E+02 2.0E-04 10 0.188 9187 0.04%2.00 0.65 0.03% 0.004 0.34 0.079 0.765 0.64% 0.0011
4.265 5611.58 214.9 5.761 214.9 3.0 1.32 2.68%Sand-Slime Tailing 0.047 93.3 0.21 0.00 0.21 0 1.45 311.252 4326.41 361.53 1016 2.68% 1.7 47% 0.74 0.00 0.74 0 0.99 0.30 1.04 1.0 0.060 ##### 518.63 1.000 16.79 0.97 1.10 0.60 1.75 1.0 0.024 1.05 378.28 1.000 95.50 56.15 2 4.21 495 1.4E-03 3.5E+02 2.0E-04 10 0.189 9148 0.04%2.00 0.65 0.03% 0.004 0.34 0.079 0.765 0.68% 0.0011
4.429 5611.42 175.0 4.480 175.0 2.3 0.98 2.56%Sand-Slime Tailing 0.047 93.3 0.22 0.00 0.22 0 1.44 251.142 3490.88 291.71 798 2.56% 1.7 47% 0.75 0.00 0.75 0 0.99 0.30 1.04 1.0 0.059 ##### 424.32 1.000 16.86 0.97 0.99 0.60 1.73 1.0 0.025 1.05 307.64 1.000 92.20 54.53 2 4.26 495 1.4E-03 3.5E+02 2.1E-04 10 0.189 9109 0.04% 2.00 0.65 0.03% 0.005 0.34 0.079 0.765 0.71% 0.0012
4.593 5611.26 150.8 3.824 150.8 1.6 0.68 2.54%Sand-Slime Tailing 0.047 93.3 0.23 0.00 0.23 0 1.43 215.630 2997.26 250.46 665 2.54% 1.7 47% 0.76 0.00 0.76 0 0.98 0.30 1.04 1.0 0.059 ##### 368.60 1.000 16.93 0.97 0.91 0.60 1.71 1.0 0.025 1.07 268.21 1.000 89.12 53.02 2 4.31 495 1.4E-03 3.5E+02 2.1E-04 10 0.190 9071 0.04% 2.00 0.65 0.03% 0.005 0.34 0.079 0.765 0.75% 0.0012
4.757 5611.09 121.0 2.453 121.0 1.6 0.71 2.03%Sand Tailings 0.051 102.8 0.24 0.00 0.24 0 1.50 181.995 2529.74 211.39 514 2.03% 1.7 18% 0.77 0.00 0.77 0 0.98 0.30 1.03 1.0 0.059 76.13 287.53 1.000 17.00 0.97 0.84 0.60 1.68 1.0 0.025 1.04 220.27 1.000 85.96 51.48 2 4.36 495 1.6E-03 3.9E+02 1.9E-04 0 0.194 11373 0.04%2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.05% 0.0001
4.921 5610.93 111.4 1.755 111.4 0.9 0.40 1.57%Sand Tailings 0.051 102.8 0.24 0.00 0.24 0 1.52 169.758 2359.64 197.17 457 1.58% 1.6 18% 0.78 0.00 0.78 0 0.98 0.25 1.03 1.0 0.058 72.50 269.67 1.000 17.14 0.97 0.81 0.60 1.66 1.0 0.026 1.00 197.17 1.000 83.01 50.08 2 4.41 495 1.6E-03 3.9E+02 1.9E-04 0 0.194 11322 0.04%2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.05% 0.0001
5.085 5610.76 105.9 2.102 105.9 0.1 0.06 1.99%Sand Tailings 0.051 102.8 0.25 0.00 0.25 0 1.53 161.916 2250.64 188.06 419 1.99% 1.7 18% 0.78 0.00 0.78 0 0.98 0.23 1.02 1.0 0.058 70.17 258.22 1.000 17.25 0.97 0.79 0.60 1.63 1.0 0.026 1.06 200.17 1.000 80.26 48.75 2 4.46 495 1.6E-03 3.9E+02 2.0E-04 0 0.195 11272 0.05%2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.05% 0.0001
5.249 5610.60 102.9 2.378 102.9 -1.0 -0.44 2.31%Sand-Slime Tailing 0.047 93.3 0.26 0.00 0.26 0 1.53 157.250 2185.78 182.63 396 2.32% 1.8 47% 0.79 0.00 0.79 0 0.98 0.22 1.02 1.0 0.058 94.35 276.98 1.000 17.32 0.97 0.78 0.61 1.60 1.0 0.027 1.11 203.34 1.000 77.93 47.62 2 4.51 495 1.4E-03 3.5E+02 2.2E-04 10 0.192 8913 0.04% 2.00 0.65 0.03% 0.006 0.34 0.079 0.765 0.89% 0.0015
5.413 5610.44 102.4 2.370 102.4 -0.5 -0.23 2.31%Sand-Slime Tailing 0.047 93.3 0.27 0.00 0.27 0 1.52 155.399 2160.05 180.48 382 2.32% 1.8 47% 0.80 0.00 0.80 0 0.98 0.21 1.02 1.0 0.058 93.60 274.08 1.000 17.38 0.97 0.78 0.61 1.57 1.0 0.027 1.12 202.03 1.000 75.73 46.55 2 4.56 495 1.4E-03 3.5E+02 2.2E-04 10 0.192 8877 0.04% 2.00 0.65 0.03% 0.006 0.34 0.079 0.765 0.93% 0.0015
5.577 5610.27 101.3 2.366 101.3 -0.4 -0.15 2.34%Sand-Slime Tailing 0.047 93.3 0.27 0.00 0.27 0 1.51 152.916 2125.53 177.60 368 2.34% 1.8 47% 0.81 0.00 0.81 0 0.98 0.21 1.01 1.0 0.057 92.59 270.19 1.000 17.44 0.96 0.77 0.62 1.55 1.0 0.027 1.13 200.40 1.000 73.65 45.54 2 4.61 495 1.4E-03 3.5E+02 2.2E-04 10 0.193 8842 0.04% 2.00 0.65 0.03% 0.006 0.34 0.079 0.765 0.96% 0.0016
5.741 5610.11 96.2 2.597 96.2 -1.0 -0.43 2.70%Sand-Slime Tailing 0.047 93.3 0.28 0.00 0.28 0 1.52 145.768 2026.18 169.29 339 2.71% 1.9 47% 0.82 0.00 0.82 0 0.98 0.19 1.01 1.0 0.057 89.67 258.96 1.000 17.50 0.96 0.75 0.62 1.52 1.0 0.028 1.19 201.39 1.000 71.68 44.59 2 4.66 495 1.4E-03 3.5E+02 2.2E-04 10 0.193 8808 0.04% 2.00 0.65 0.03% 0.006 0.34 0.079 0.765 0.99% 0.0016
5.905 5609.94 86.9 2.414 86.9 -0.9 -0.40 2.78%Sand-Slime Tailing 0.047 93.3 0.29 0.00 0.29 0 1.54 133.514 1855.84 155.06 298 2.79% 1.9 47% 0.82 0.00 0.82 0 0.98 0.17 1.01 1.0 0.057 84.68 239.74 1.000 17.57 0.96 0.72 0.64 1.48 1.0 0.029 1.23 190.57 1.000 69.82 43.69 2 4.71 495 1.4E-03 3.5E+02 2.3E-04 10 0.193 8774 0.05% 2.00 0.65 0.03% 0.007 0.34 0.079 0.765 1.02% 0.0017
6.069 5609.78 80.9 2.523 80.9 -1.0 -0.43 3.12%Sand-Slime Tailing 0.047 93.3 0.30 0.00 0.30 0 1.55 125.130 1739.31 145.32 271 3.13% 2.0 47% 0.83 0.00 0.83 0 0.98 0.15 1.01 1.0 0.057 81.27 226.59 1.000 17.62 0.96 0.70 0.65 1.45 1.0 0.029 1.31 189.90 1.000 68.05 42.84 2 4.76 495 1.4E-03 3.5E+02 2.3E-04 10 0.194 8740 0.05% 2.00 0.65 0.03% 0.007 0.34 0.079 0.765 1.06% 0.0017
6.234 5609.62 79.6 2.316 79.6 -1.1 -0.49 2.91%Sand-Slime Tailing 0.047 93.3 0.31 0.00 0.31 0 1.54 122.573 1703.76 142.35 260 2.92% 2.0 47% 0.84 0.00 0.84 0 0.98 0.15 1.00 1.0 0.057 80.23 222.57 1.000 17.67 0.96 0.69 0.66 1.43 1.0 0.030 1.29 182.97 1.000 66.38 42.02 2 4.81 495 1.4E-03 3.5E+02 2.3E-04 10 0.194 8707 0.05% 2.00 0.65 0.03% 0.007 0.34 0.079 0.765 1.09% 0.0018
6.398 5609.45 76.6 2.134 76.6 -0.2 -0.10 2.79%Sand-Slime Tailing 0.047 93.3 0.31 0.00 0.31 0 1.54 117.783 1637.19 136.80 244 2.80% 2.0 47% 0.85 0.00 0.85 0 0.97 0.14 1.00 1.0 0.056 78.28 215.07 1.000 17.71 0.96 0.68 0.66 1.41 1.0 0.030 1.28 175.75 1.000 64.78 41.25 2 4.86 495 1.4E-03 3.5E+02 2.3E-04 10 0.195 8674 0.05% 2.00 0.65 0.03% 0.007 0.34 0.079 0.765 1.12% 0.0018
6.562 5609.29 57.1 1.783 57.1 -0.0 -0.01 3.12%Sand-Slime Tailing 0.047 93.3 0.32 0.00 0.32 0 1.61 91.966 1278.33 106.81 177 3.14% 2.1 47% 0.85 0.00 0.85 0 0.97 0.11 1.00 1.0 0.056 67.76 174.57 0.459 8.14 0.96 0.60 0.70 1.34 1.0 0.032 1.47 156.93 0.439 27.80 17.97 2 4.91 495 1.4E-03 3.5E+02 2.3E-04 10 0.195 8642 0.05% 2.00 0.65 0.03% 0.008 0.34 0.079 0.765 1.15% 0.0019
6.726 5609.12 51.8 1.588 51.8 -0.1 -0.03 3.07%Sand-Slime Tailing 0.047 93.3 0.33 0.00 0.33 0 1.62 84.096 1168.93 97.67 157 3.09% 2.1 47% 0.86 0.00 0.86 0 0.97 0.10 1.00 1.0 0.056 64.56 162.23 0.341 6.07 0.96 0.57 0.71 1.32 1.0 0.032 1.52 148.18 0.383 23.65 14.86 2 4.96 495 1.4E-03 3.5E+02 2.4E-04 10 0.196 8610 0.05% 2.00 0.65 0.03% 0.008 0.34 0.079 0.765 1.18% 0.0019
6.890 5608.96 49.7 1.224 49.7 -0.8 -0.33 2.46%Sand-Slime Tailing 0.047 93.3 0.34 0.00 0.34 0 1.62 80.549 1119.63 93.54 147 2.48% 2.1 47% 0.87 0.00 0.87 0 0.97 0.10 1.00 1.0 0.056 63.11 156.65 0.305 5.45 0.96 0.56 0.72 1.30 1.0 0.033 1.41 131.92 0.294 17.74 11.59 2 5.01 495 1.4E-03 3.5E+02 2.4E-04 10 0.196 8578 0.05% 2.00 0.65 0.03% 0.008 0.34 0.079 0.765 1.22% 0.0020
7.054 5608.80 56.3 1.510 56.4 -0.3 -0.13 2.68%Sand-Slime Tailing 0.047 93.3 0.34 0.00 0.34 0 1.57 88.530 1230.57 102.82 163 2.70% 2.1 47% 0.88 0.00 0.88 0 0.97 0.11 1.00 1.0 0.056 66.36 169.18 0.399 7.14 0.96 0.59 0.71 1.31 1.0 0.032 1.41 145.18 0.365 21.55 14.34 2 5.06 495 1.4E-03 3.5E+02 2.4E-04 10 0.197 8547 0.05% 2.00 0.65 0.03% 0.008 0.34 0.079 0.765 1.25% 0.0020
7.218 5608.63 68.1 2.477 68.1 7.0 3.01 3.64%Slime Tailings 0.041 82.7 0.35 0.00 0.35 0 1.51 102.716 1427.76 119.37 193 3.66% 2.1 71% 0.88 0.00 0.88 0 0.97 0.12 1.00 1.0 0.056 71.66 191.03 0.781 13.98 0.96 0.63 0.68 1.33 1.0 0.032 1.53 182.92 1.000 57.98 35.98 2 5.11 495 1.3E-03 3.1E+02 2.7E-04 16 0.449 7010 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.09% 0.0034
7.382 5608.47 66.2 2.994 66.2 1.5 0.65 4.52%Slime Tailings 0.041 82.7 0.36 0.00 0.36 0 1.51 99.683 1385.59 115.79 184 4.55% 2.2 71% 0.89 0.00 0.89 0 0.97 0.12 1.00 1.0 0.056 70.41 186.20 0.655 11.75 0.96 0.62 0.69 1.31 1.0 0.032 1.75 202.06 1.000 56.91 34.33 2 5.16 495 1.3E-03 3.1E+02 2.8E-04 16 0.449 6988 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.12% 0.0035
7.546 5608.30 143.2 1.935 143.2 2.8 1.21 1.35%Sand Tailings 0.051 102.8 0.37 0.00 0.37 0 1.30 186.431 2591.40 216.56 391 1.35% 1.6 18% 0.90 0.00 0.90 0 0.97 0.30 0.99 1.0 0.055 77.45 294.01 1.000 18.12 0.96 0.85 0.60 1.41 1.0 0.030 1.00 216.56 1.000 55.62 36.87 2 5.21 495 1.6E-03 3.9E+02 2.2E-04 0 0.201 10663 0.06%2.20 1.00 0.03% 0.001 0.34 0.079 0.765 0.10% 0.0002
7.710 5608.14 161.7 1.640 161.7 -0.1 -0.04 1.01%Sand Tailings 0.051 102.8 0.37 0.00 0.37 0 1.27 204.599 2843.92 237.63 431 1.02% 1.5 18% 0.91 0.00 0.91 0 0.97 0.30 0.98 1.0 0.055 82.84 320.47 1.000 18.19 0.96 0.89 0.60 1.40 1.0 0.030 1.00 237.63 1.000 54.38 36.29 2 5.26 495 1.6E-03 3.9E+02 2.3E-04 0 0.201 10622 0.06%2.20 1.00 0.03% 0.001 0.34 0.079 0.765 0.10% 0.0002
7.874 5607.98 86.8 1.774 86.8 4.1 1.79 2.04%Sand-Slime Tailing 0.047 93.3 0.38 0.00 0.38 0 1.40 121.855 1693.79 141.57 226 2.05% 1.9 47% 0.91 0.00 0.91 0 0.96 0.15 0.99 1.0 0.055 79.95 221.52 1.000 18.09 0.96 0.69 0.66 1.32 1.0 0.032 1.18 167.67 1.000 53.32 35.70 2 5.31 495 1.4E-03 3.5E+02 2.5E-04 10 0.199 8398 0.06% 2.00 0.65 0.03% 0.009 0.34 0.079 0.765 1.40% 0.0023
8.038 5607.81 50.5 1.194 50.5 1.7 0.75 2.36%Sand-Slime Tailing 0.047 93.3 0.39 0.00 0.39 0 1.52 76.535 1063.84 88.91 129 2.38% 2.1 47% 0.92 0.00 0.92 0 0.96 0.10 0.99 1.0 0.055 61.48 150.39 0.273 4.93 0.96 0.54 0.73 1.24 1.0 0.034 1.45 128.98 0.280 14.62 9.78 2 5.36 495 1.4E-03 3.5E+02 2.5E-04 10 0.199 8369 0.06% 2.00 0.65 0.03% 0.009 0.34 0.079 0.765 1.44% 0.0024
8.202 5607.65 34.7 0.878 34.7 0.9 0.37 2.53%Sand-Slime Tailing 0.047 93.3 0.40 0.00 0.40 0 1.58 54.878 762.80 63.75 86 2.56% 2.2 47% 0.93 0.00 0.93 0 0.96 0.08 0.99 1.0 0.055 52.66 116.41 0.172 3.11 0.96 0.46 0.77 1.20 1.0 0.035 1.76 112.27 0.212 10.86 6.98 2 5.41 495 1.4E-03 3.5E+02 2.6E-04 10 0.200 8340 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.47% 0.0024
8.366 5607.48 25.8 0.664 25.8 0.5 0.20 2.58%Sand-Slime Tailing 0.047 93.3 0.40 0.00 0.40 0 1.63 41.903 582.45 48.67 63 2.62% 2.3 47% 0.94 0.00 0.94 0 0.96 0.07 0.99 1.0 0.055 47.37 96.05 0.136 2.46 0.96 0.40 0.80 1.16 1.0 0.036 2.09 101.59 0.178 8.94 5.70 2 5.46 495 1.4E-03 3.5E+02 2.6E-04 10 0.200 8312 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.50% 0.0025
8.530 5607.32 31.8 0.573 31.8 2.8 1.21 1.80%Sand-Slime Tailing 0.047 93.3 0.41 0.00 0.41 0 1.57 49.800 692.22 57.87 76 1.83% 2.2 47% 0.95 0.00 0.95 0 0.96 0.08 0.99 1.0 0.055 50.60 108.47 0.157 2.85 0.96 0.44 0.78 1.18 1.0 0.036 1.60 92.72 0.154 7.62 5.23 2 5.51 495 1.4E-03 3.5E+02 2.6E-04 10 0.200 8284 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.53% 0.0025
8.694 5607.16 34.8 0.413 34.8 2.3 1.01 1.19%Sand-Slime Tailing 0.047 93.3 0.42 0.00 0.42 0 1.54 53.460 743.09 62.12 82 1.20% 2.0 47% 0.95 0.00 0.95 0 0.96 0.08 0.99 1.0 0.055 52.09 114.20 0.168 3.05 0.96 0.46 0.77 1.18 1.0 0.036 1.34 83.09 0.133 6.48 4.76 2 5.56 495 1.4E-03 3.5E+02 2.6E-04 10 0.201 8256 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.56% 0.0026
8.858 5606.99 33.7 0.343 33.7 0.9 0.37 1.02%Sand-Slime Tailing 0.047 93.3 0.43 0.00 0.43 0 1.53 51.481 715.59 59.80 78 1.03% 2.0 47% 0.96 0.00 0.96 0 0.96 0.08 0.99 1.0 0.055 51.27 111.08 0.162 2.95 0.96 0.45 0.78 1.17 1.0 0.036 1.30 77.98 0.124 5.92 4.43 2 5.61 495 1.4E-03 3.5E+02 2.6E-04 10 0.201 8229 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.59% 0.0026
9.022 5606.83 29.3 0.358 29.3 0.1 0.05 1.22%Sand-Slime Tailing 0.047 93.3 0.44 0.00 0.44 0 1.54 44.964 624.99 52.22 66 1.24% 2.1 47% 0.97 0.00 0.97 0 0.96 0.07 0.99 1.0 0.055 48.62 100.84 0.144 2.62 0.96 0.42 0.79 1.15 1.0 0.037 1.47 76.82 0.122 5.73 4.18 2 5.66 495 1.4E-03 3.5E+02 2.7E-04 10 0.202 8202 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.62% 0.0027
9.186 5606.66 20.9 0.342 20.9 -0.3 -0.13 1.64%Sand-Slime Tailing 0.047 93.3 0.44 0.00 0.44 0 1.58 32.960 458.14 38.28 46 1.67% 2.3 47% 0.98 0.00 0.98 0 0.96 0.06 0.99 1.0 0.055 43.73 82.00 0.115 2.10 0.96 0.36 0.80 1.14 1.0 0.037 1.99 76.07 0.121 5.57 3.84 2 5.71 495 1.4E-03 3.5E+02 2.7E-04 10 0.202 8175 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.66% 0.0027
9.350 5606.50 12.6 0.327 12.6 -0.6 -0.25 2.59%Slime Tailings 0.041 82.7 0.45 0.00 0.45 0 1.64 20.679 287.43 24.01 27 2.69% 2.6 71% 0.98 0.00 0.98 0 0.96 0.06 0.99 1.0 0.055 38.45 62.46 0.091 1.65 0.96 0.28 0.80 1.14 1.0 0.037 3.47 83.20 0.134 6.07 3.86 2 5.76 460 1.3E-03 2.7E+02 3.5E-04 16 0.454 6709 0.14% 2.00 0.65 0.03% 0.024 0.34 0.079 0.765 3.68% 0.0060
9.514 5606.34 12.0 0.251 12.0 -0.7 -0.29 2.10%Slime Tailings 0.041 82.7 0.46 0.00 0.46 0 1.63 19.500 271.05 22.64 25 2.18% 2.6 71% 0.99 0.00 0.99 0 0.95 0.05 0.99 1.0 0.055 37.97 60.61 0.089 1.62 0.96 0.27 0.80 1.14 1.0 0.037 3.27 74.01 0.118 5.27 3.44 2 5.81 460 1.3E-03 2.7E+02 3.6E-04 16 0.455 6690 0.14% 2.00 0.65 0.03% 0.024 0.34 0.079 0.765 3.73% 0.0061
9.678 5606.17 14.1 0.216 14.1 -0.6 -0.26 1.53%Sand-Slime Tailing 0.047 93.3 0.46 0.00 0.46 0 1.59 22.445 311.98 26.06 29 1.58% 2.5 47% 1.00 0.00 1.00 0 0.95 0.06 0.99 1.0 0.055 39.44 65.50 0.094 1.72 0.96 0.29 0.80 1.13 1.0 0.037 2.54 66.27 0.107 4.72 3.22 2 5.86 460 1.4E-03 3.1E+02 3.2E-04 10 0.203 8103 0.10% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.63% 0.0043
9.842 5606.01 23.2 0.158 23.2 -0.3 -0.12 0.68%Sand-Slime Tailing 0.047 93.3 0.47 0.00 0.47 0 1.50 34.822 484.03 40.44 48 0.70% 2.1 47% 1.00 0.00 1.00 0 0.95 0.07 0.99 1.0 0.054 44.48 84.93 0.120 2.19 0.95 0.37 0.80 1.13 1.0 0.037 1.42 57.38 0.098 4.23 3.21 2 5.91 460 1.4E-03 3.1E+02 3.2E-04 10 0.203 8077 0.10% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.67% 0.0044
10.006 5605.84 22.6 0.274 22.6 -0.3 -0.12 1.21%Sand-Slime Tailing 0.047 93.3 0.48 0.00 0.48 0 1.49 33.696 468.37 39.13 46 1.24% 2.2 47% 1.01 0.00 1.01 0 0.95 0.06 0.99 1.0 0.054 44.03 83.16 0.117 2.15 0.95 0.36 0.80 1.12 1.0 0.037 1.75 68.53 0.110 4.69 3.42 2 5.96 460 1.4E-03 3.1E+02 3.2E-04 10 0.204 8052 0.10% 2.00 0.65 0.03% 0.018 0.34 0.079 0.765 2.71% 0.0044
10.170 5605.68 11.1 0.368 11.1 -0.5 -0.23 3.32%Slime Tailings 0.041 82.7 0.49 0.00 0.49 0 1.56 17.349 241.15 20.14 22 3.47% 2.8 71% 1.02 0.00 1.02 0 0.95 0.05 0.99 1.0 0.054 37.10 57.25 0.085 1.56 0.95 0.26 0.80 1.12 1.0 0.038 4.49 90.38 0.149 6.26 3.91 2 6.01 460 1.3E-03 2.7E+02 3.7E-04 16 0.456 6609 0.15% 2.00 0.65 0.03% 0.026 0.34 0.079 0.765 3.94% 0.0065
10.335 5605.52 10.3 0.383 10.3 0.3 0.12 3.73%Slime Tailings 0.041 82.7 0.49 0.00 0.49 0 1.55 15.894 220.93 18.46 20 3.91% 2.8 71% 1.03 0.00 1.03 0 0.95 0.05 0.99 1.0 0.054 36.52 54.98 0.082 1.52 0.95 0.25 0.80 1.12 1.0 0.038 5.04 92.99 0.155 6.43 3.97 2 6.06 460 1.3E-03 2.7E+02 3.7E-04 16 0.456 6591 0.16% 2.00 0.65 0.03% 0.026 0.34 0.079 0.765 3.98% 0.0065
10.499 5605.35 8.6 0.299 8.6 1.8 0.79 3.46%Slime Tailings 0.041 82.7 0.50 0.00 0.50 0 1.53 13.186 183.29 15.34 16 3.68% 2.9 71% 1.03 0.00 1.03 0 0.95 0.05 0.99 1.0 0.054 35.43 50.76 0.078 1.44 0.95 0.23 0.80 1.11 1.0 0.038 5.50 84.30 0.136 5.56 3.50 2 6.11 460 1.3E-03 2.7E+02 3.7E-04 16 0.457 6573 0.16% 2.00 0.65 0.03% 0.026 0.34 0.079 0.765 4.03% 0.0066
10.663 5605.19 11.2 0.222 11.2 2.1 0.91 1.98%Slime Tailings 0.041 82.7 0.51 0.00 0.51 0 1.51 16.923 235.23 19.68 21 2.08% 2.6 71% 1.04 0.00 1.04 0 0.95 0.05 0.99 1.0 0.054 36.94 56.62 0.084 1.55 0.95 0.26 0.80 1.11 1.0 0.038 3.58 70.44 0.113 4.55 3.05 2 6.16 460 1.3E-03 2.7E+02 3.7E-04 16 0.457 6555 0.16% 2.00 0.65 0.03% 0.027 0.34 0.079 0.765 4.08% 0.0067
10.827 5605.02 22.3 0.182 22.3 1.3 0.55 0.82%Sand-Slime Tailing 0.047 93.3 0.51 0.00 0.51 0 1.43 31.828 442.41 36.98 42 0.84% 2.2 47% 1.05 0.00 1.05 0 0.95 0.06 0.99 1.0 0.054 43.27 80.25 0.113 2.09 0.95 0.35 0.80 1.11 1.0 0.038 1.59 58.90 0.099 3.95 3.02 2 6.21 460 1.4E-03 3.1E+02 3.3E-04 10 0.206 7940 0.11% 2.00 0.65 0.03% 0.019 0.34 0.079 0.765 2.91% 0.0048
10.991 5604.86 26.2 0.185 26.2 0.6 0.25 0.71%Sand-Slime Tailing 0.047 93.3 0.52 0.00 0.52 0 1.40 36.562 508.21 42.47 49 0.72% 2.1 47% 1.05 0.00 1.05 0 0.94 0.07 0.99 1.0 0.054 45.20 87.67 0.123 2.29 0.95 0.38 0.80 1.11 1.0 0.038 1.42 60.27 0.100 3.94 3.12 2 6.26 460 1.4E-03 3.1E+02 3.4E-04 10 0.206 7916 0.11% 2.00 0.65 0.03% 0.019 0.34 0.079 0.765 2.95% 0.0048
11.155 5604.70 24.7 0.273 24.7 0.3 0.14 1.10%Sand-Slime Tailing 0.047 93.3 0.53 0.00 0.53 0 1.39 34.382 477.91 39.94 46 1.13% 2.2 47% 1.06 0.00 1.06 0 0.94 0.06 0.99 1.0 0.054 44.31 84.24 0.119 2.20 0.95 0.36 0.80 1.10 1.0 0.038 1.70 67.83 0.109 4.22 3.21 2 6.31 460 1.4E-03 3.1E+02 3.4E-04 10 0.206 7892 0.11% 2.00 0.65 0.03% 0.020 0.34 0.079 0.765 3.00% 0.0049
11.319 5604.53 17.5 0.349 17.5 -0.1 -0.05 1.99%Sand-Slime Tailing 0.047 93.3 0.54 0.00 0.54 0 1.41 24.763 344.20 28.76 32 2.06% 2.5 47% 1.07 0.00 1.07 0 0.94 0.06 0.99 1.0 0.054 40.39 69.15 0.099 1.83 0.95 0.31 0.80 1.10 1.0 0.038 2.75 79.07 0.126 4.81 3.32 2 6.36 460 1.4E-03 3.1E+02 3.4E-04 10 0.207 7868 0.11% 2.00 0.65 0.03% 0.020 0.34 0.079 0.765 3.04% 0.0050
11.483 5604.37 12.5 0.390 12.5 -0.2 -0.07 3.12%Slime Tailings 0.057 113.1 0.55 0.00 0.55 1 1.43 17.845 248.04 20.72 22 3.27% 2.7 71% 1.08 0.00 1.08 0 0.94 0.05 0.99 1.0 0.054 37.30 58.03 0.086 1.59 0.95 0.26 0.80 1.10 1.0 0.038 4.35 90.07 0.148 5.57 3.58 2 6.41 460 1.8E-03 3.7E+02 2.8E-04 16 0.459 6454 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 2.03% 0.0033
11.647 5604.20 12.1 0.339 12.1 2.0 0.88 2.79%Slime Tailings 0.057 113.1 0.56 0.01 0.55 1 1.42 17.214 239.27 20.01 21 2.93% 2.7 71% 1.09 0.00 1.09 0 0.94 0.05 0.99 1.0 0.054 37.06 57.07 0.085 1.58 0.95 0.26 0.80 1.09 1.0 0.038 4.22 84.43 0.136 5.08 3.33 2 6.46 460 1.8E-03 3.7E+02 2.9E-04 16 0.459 6432 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.07% 0.0034
11.811 5604.04 10.7 0.328 10.7 10.4 4.49 3.06%Slime Tailings 0.057 113.1 0.57 0.01 0.55 1 1.41 15.051 209.21 17.59 18 3.23% 2.8 71% 1.10 0.00 1.10 0 0.94 0.05 0.99 1.0 0.054 36.21 53.80 0.081 1.52 0.95 0.24 0.80 1.09 1.0 0.038 4.81 84.62 0.136 5.06 3.29 2 6.51 460 1.8E-03 3.7E+02 2.9E-04 16 0.460 6409 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.10% 0.0035
11.975 5603.88 17.0 0.353 16.9 18.5 8.03 2.08%Sand-Slime Tailing 0.059 119.0 0.57 0.02 0.56 1 1.38 23.239 323.02 27.18 29 2.15% 2.5 47% 1.11 0.00 1.11 0 0.94 0.06 0.99 1.0 0.053 39.83 67.01 0.096 1.80 0.95 0.30 0.80 1.09 1.0 0.038 2.95 80.09 0.128 4.70 3.25 2 6.56 460 1.8E-03 3.9E+02 2.8E-04 10 0.209 7757 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.69% 0.0028
12.139 5603.71 12.2 0.338 12.1 8.3 3.58 2.77%Slime Tailings 0.057 113.1 0.58 0.02 0.56 1 1.39 16.931 235.34 19.75 21 2.91% 2.7 71% 1.12 0.00 1.12 0 0.94 0.05 0.99 1.0 0.053 36.96 56.71 0.084 1.58 0.95 0.26 0.80 1.09 1.0 0.038 4.26 84.15 0.135 4.95 3.26 2 6.61 460 1.8E-03 3.7E+02 2.9E-04 16 0.461 6364 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.18% 0.0036
12.303 5603.55 8.8 0.266 8.8 6.5 2.80 3.02%Slime Tailings 0.057 113.1 0.59 0.03 0.57 1 1.39 12.161 169.03 14.19 14 3.24% 2.9 71% 1.13 0.00 1.13 0 0.94 0.05 0.99 1.0 0.053 35.03 49.22 0.077 1.44 0.95 0.22 0.80 1.09 1.0 0.038 5.55 78.80 0.126 4.56 3.00 2 6.66 460 1.8E-03 3.7E+02 3.0E-04 16 0.461 6342 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.21% 0.0036
12.467 5603.38 5.7 0.163 5.7 9.4 4.08 2.86%Slime Tailings 0.057 113.1 0.60 0.03 0.57 1 1.38 7.790 108.28 9.14 9 3.19% 3.1 71% 1.14 0.00 1.14 0 0.93 0.04 0.99 1.0 0.053 33.27 42.41 0.071 1.32 0.95 0.17 0.80 1.09 1.0 0.039 7.34 67.12 0.108 3.90 2.61 2 6.71 460 1.8E-03 3.7E+02 3.0E-04 16 0.462 6321 0.08% 2.00 0.65 0.03%0.015 0.34 0.079 0.765 2.25% 0.0037
12.631 5603.22 6.7 0.119 6.6 17.7 7.65 1.77%Slime Tailings 0.057 113.1 0.61 0.04 0.58 1 1.37 9.089 126.34 10.73 11 1.94% 2.9 71% 1.14 0.00 1.14 0 0.93 0.05 0.99 1.0 0.053 33.82 44.56 0.072 1.36 0.95 0.19 0.80 1.08 1.0 0.039 5.42 58.12 0.098 3.52 2.44 2 6.76 460 1.8E-03 3.7E+02 3.0E-04 16 0.462 6300 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.28% 0.0037
12.795 5603.05 9.3 0.181 9.2 25.8 11.18 1.94%Slime Tailings 0.057 113.1 0.62 0.04 0.58 1 1.36 12.514 173.95 14.79 15 2.08% 2.8 71% 1.15 0.00 1.15 0 0.93 0.05 0.99 1.0 0.053 35.24 50.03 0.078 1.46 0.95 0.22 0.80 1.08 1.0 0.039 4.45 65.88 0.107 3.79 2.63 2 6.81 460 1.8E-03 3.7E+02 3.0E-04 16 0.462 6279 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.32% 0.0038
12.959 5602.89 8.3 0.182 8.2 18.0 7.82 2.18%Slime Tailings 0.057 113.1 0.63 0.05 0.58 1 1.36 11.157 155.08 13.13 13 2.36% 2.8 71% 1.16 0.00 1.16 0 0.93 0.05 0.99 1.0 0.053 34.66 47.80 0.075 1.42 0.95 0.21 0.80 1.08 1.0 0.039 5.12 67.20 0.108 3.82 2.62 2 6.86 460 1.8E-03 3.7E+02 3.1E-04 16 0.463 6258 0.09% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.35% 0.0039
13.123 5602.73 6.3 0.181 6.2 22.2 9.60 2.85%Slime Tailings 0.057 113.1 0.64 0.05 0.59 1 1.35 8.372 116.37 9.94 10 3.17% 3.0 71% 1.17 0.00 1.17 0 0.93 0.05 0.99 1.0 0.053 33.55 43.49 0.072 1.35 0.95 0.18 0.80 1.08 1.0 0.039 6.98 69.37 0.111 3.90 2.62 2 6.91 460 1.8E-03 3.7E+02 3.1E-04 16 0.463 6238 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.39% 0.0039
13.287 5602.56 5.9 0.160 5.6 56.5 24.47 2.70%Slime Tailings 0.057 113.1 0.65 0.06 0.59 1 1.34 7.468 103.80 9.22 9 3.03% 3.0 71% 1.18 0.00 1.18 0 0.93 0.04 0.99 1.0 0.053 33.30 42.52 0.071 1.34 0.95 0.18 0.80 1.08 1.0 0.039 7.21 66.51 0.107 3.74 2.54 2 6.96 460 1.8E-03 3.7E+02 3.1E-04 16 0.464 6217 0.09% 2.00 0.65 0.03%0.016 0.34 0.079 0.765 2.43% 0.0040
13.451 5602.40 5.0 0.142 4.6 62.6 27.11 2.87%Slime Tailings 0.057 113.1 0.66 0.06 0.60 1 1.33 6.080 84.51 7.67 7 3.31% 3.1 71% 1.19 0.00 1.19 0 0.93 0.04 0.99 1.0 0.053 32.76 40.42 0.069 1.31 0.95 0.16 0.80 1.08 1.0 0.039 8.42 64.56 0.105 3.64 2.47 2 7.01 460 1.8E-03 3.7E+02 3.1E-04 16 0.464 6197 0.09% 2.00 0.65 0.03%0.016 0.34 0.079 0.765 2.46% 0.0040
13.615 5602.23 4.7 0.156 4.3 65.6 28.41 3.34%Slime Tailings 0.057 113.1 0.67 0.07 0.60 1 1.33 5.649 78.52 7.19 7 3.90% 3.2 71% 1.20 0.00 1.20 0 0.93 0.04 0.99 1.0 0.053 32.59 39.78 0.068 1.30 0.95 0.15 0.80 1.07 1.0 0.039 9.34 67.15 0.108 3.72 2.51 2 7.06 460 1.8E-03 3.7E+02 3.1E-04 16 0.464 6178 0.09% 2.00 0.65 0.03%0.016 0.34 0.079 0.765 2.50% 0.0041
13.779 5602.07 5.0 0.155 4.5 70.8 30.68 3.12%Slime Tailings 0.057 113.1 0.68 0.07 0.60 1 1.32 5.962 82.87 7.60 7 3.62% 3.2 71% 1.21 0.00 1.21 0 0.92 0.04 0.99 1.0 0.053 32.73 40.34 0.069 1.31 0.95 0.16 0.80 1.07 1.0 0.039 8.78 66.76 0.108 3.68 2.49 2 7.11 460 1.8E-03 3.7E+02 3.2E-04 16 0.465 6158 0.09% 2.00 0.65 0.03%0.017 0.34 0.079 0.765 2.53% 0.0042
13.943 5601.91 5.3 0.171 4.9 65.5 28.40 3.21%Slime Tailings 0.057 113.1 0.69 0.08 0.61 1 1.31 6.441 89.54 8.10 8 3.69% 3.1 71% 1.22 0.00 1.22 0 0.92 0.04 0.98 1.0 0.053 32.91 41.01 0.069 1.32 0.95 0.16 0.80 1.07 1.0 0.039 8.51 68.96 0.111 3.75 2.54 2 7.16 460 1.8E-03 3.7E+02 3.2E-04 16 0.465 6139 0.09% 2.00 0.65 0.03%0.017 0.34 0.079 0.765 2.57% 0.0042
14.107 5601.74 5.7 0.161 5.3 66.6 28.87 2.81%Slime Tailings 0.057 113.1 0.70 0.08 0.61 1 1.30 6.929 96.32 8.68 8 3.20% 3.1 71% 1.23 0.00 1.23 0 0.92 0.04 0.98 1.0 0.052 33.11 41.79 0.070 1.34 0.94 0.17 0.80 1.07 1.0 0.039 7.72 67.00 0.108 3.64 2.49 2 7.21 460 1.8E-03 3.7E+02 3.2E-04 16 0.466 6120 0.10% 2.00 0.65 0.03%0.017 0.34 0.079 0.765 2.61% 0.0043
14.271 5601.58 6.2 0.224 5.8 64.0 27.75 3.64%Slime Tailings 0.057 113.1 0.70 0.09 0.62 1 1.30 7.477 103.93 9.29 9 4.11% 3.1 71% 1.24 0.00 1.24 0 0.92 0.04 0.98 1.0 0.052 33.32 42.61 0.071 1.35 0.94 0.18 0.80 1.07 1.0 0.039 8.17 75.85 0.121 4.04 2.70 2 7.26 460 1.8E-03 3.7E+02 3.2E-04 16 0.466 6101 0.10% 2.00 0.65 0.03%0.017 0.34 0.079 0.765 2.64% 0.0043
14.436 5601.41 6.8 0.221 6.7 27.2 11.78 3.24%Slime Tailings 0.057 113.1 0.71 0.09 0.62 1 1.29 8.600 119.54 10.24 10 3.61% 3.0 71% 1.25 0.00 1.25 0 0.92 0.05 0.98 1.0 0.052 33.65 43.90 0.072 1.38 0.94 0.18 0.80 1.07 1.0 0.039 7.30 74.79 0.119 3.96 2.67 2 7.31 460 1.8E-03 3.7E+02 3.3E-04 16 0.466 6082 0.10% 2.00 0.65 0.03% 0.018 0.34 0.079 0.765 2.68% 0.0044
14.600 5601.25 12.2 0.194 12.0 33.9 14.70 1.58%Sand-Slime Tailing 0.059 119.0 0.72 0.10 0.63 1 1.28 15.444 214.67 18.25 18 1.68% 2.6 47% 1.26 0.00 1.26 0 0.92 0.05 0.98 1.0 0.052 36.70 54.96 0.082 1.58 0.94 0.25 0.80 1.07 1.0 0.039 3.56 64.99 0.106 3.49 2.54 2 7.36 500 1.8E-03 4.6E+02 2.7E-04 10 0.215 7361 0.05% 2.00 0.65 0.03% 0.009 0.34 0.079 0.765 1.39% 0.0023
14.764 5601.09 17.1 0.255 17.0 12.7 5.52 1.49%Sand-Slime Tailing 0.059 119.0 0.73 0.10 0.63 1 1.27 21.529 299.25 25.12 26 1.56% 2.5 47% 1.27 0.00 1.27 0 0.92 0.06 0.98 1.0 0.052 39.11 64.23 0.093 1.79 0.94 0.29 0.80 1.06 1.0 0.039 2.74 68.85 0.110 3.63 2.71 2 7.41 500 1.8E-03 4.6E+02 2.7E-04 10 0.216 7338 0.06% 2.00 0.65 0.03% 0.009 0.34 0.079 0.765 1.42% 0.0023
14.928 5600.92 15.7 0.220 15.7 4.6 1.99 1.40%Sand-Slime Tailing 0.059 119.0 0.74 0.11 0.63 1 1.26 19.827 275.59 23.07 24 1.47% 2.5 47% 1.28 0.00 1.28 0 0.92 0.05 0.98 1.0 0.052 38.39 61.46 0.089 1.73 0.94 0.28 0.80 1.06 1.0 0.039 2.84 65.58 0.106 3.47 2.60 2 7.46 500 1.8E-03 4.6E+02 2.7E-04 10 0.216 7314 0.06% 2.00 0.65 0.03% 0.009 0.34 0.079 0.765 1.45% 0.0024
15.092 5600.76 10.8 0.225 10.8 8.1 3.49 2.08%Slime Tailings 0.057 113.1 0.75 0.11 0.64 1 1.26 13.623 189.36 15.90 16 2.23% 2.8 71% 1.29 0.00 1.29 0 0.91 0.05 0.98 1.0 0.052 35.62 51.52 0.079 1.52 0.94 0.23 0.80 1.06 1.0 0.039 4.46 70.87 0.113 3.67 2.60 2 7.51 500 1.8E-03 4.4E+02 2.9E-04 16 0.468 6006 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.89% 0.0031
15.256 5600.59 23.2 0.308 23.2 2.0 0.87 1.33%Sand-Slime Tailing 0.059 119.0 0.76 0.12 0.64 1 1.23 28.564 397.04 33.19 35 1.37% 2.4 47% 1.29 0.00 1.29 0 0.91 0.06 0.98 1.0 0.051 41.94 75.14 0.106 2.06 0.94 0.33 0.80 1.06 1.0 0.039 2.14 71.16 0.114 3.66 2.86 2 7.56 500 1.8E-03 4.6E+02 2.7E-04 10 0.217 7270 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.50% 0.0025
15.420 5600.43 16.2 0.412 16.2 0.7 0.28 2.55%Slime Tailings 0.057 113.1 0.77 0.12 0.65 1 1.24 20.096 279.34 23.35 24 2.68% 2.7 71% 1.30 0.00 1.30 0 0.91 0.05 0.98 1.0 0.052 38.22 61.56 0.090 1.74 0.94 0.28 0.80 1.06 1.0 0.039 3.75 87.44 0.142 4.55 3.15 2 7.61 500 1.8E-03 4.4E+02 2.9E-04 16 0.469 5970 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.95% 0.0032
15.584 5600.27 12.6 0.274 12.6 2.6 1.12 2.17%Slime Tailings 0.057 113.1 0.78 0.13 0.65 1 1.24 15.661 217.69 18.21 18 2.32% 2.7 71% 1.31 0.00 1.31 0 0.91 0.05 0.98 1.0 0.052 36.43 54.64 0.082 1.59 0.94 0.25 0.80 1.06 1.0 0.039 4.15 75.50 0.120 3.82 2.71 2 7.66 500 1.8E-03 4.4E+02 2.9E-04 16 0.469 5953 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.97% 0.0032
15.748 5600.10 10.3 0.241 10.2 8.8 3.82 2.34%Slime Tailings 0.057 113.1 0.79 0.13 0.66 1 1.24 12.652 175.86 14.77 14 2.54% 2.8 71% 1.32 0.00 1.32 0 0.91 0.05 0.98 1.0 0.051 35.23 50.01 0.077 1.51 0.94 0.22 0.80 1.06 1.0 0.039 4.99 73.70 0.117 3.71 2.61 2 7.71 500 1.8E-03 4.4E+02 2.9E-04 16 0.470 5935 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 2.00% 0.0033
15.912 5599.94 9.3 0.182 8.8 77.2 33.43 1.96%Slime Tailings 0.057 113.1 0.80 0.14 0.66 1 1.23 10.854 150.88 13.30 13 2.14% 2.8 71% 1.33 0.00 1.33 0 0.91 0.05 0.98 1.0 0.051 34.72 48.01 0.076 1.47 0.94 0.21 0.80 1.05 1.0 0.039 4.99 66.36 0.107 3.37 2.42 2 7.76 500 1.8E-03 4.4E+02 3.0E-04 16 0.470 5918 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 2.03% 0.0033
16.076 5599.77 9.1 0.171 8.6 82.6 35.81 1.87%Slime Tailings 0.057 113.1 0.81 0.14 0.66 1 1.22 10.569 146.90 13.01 13 2.05% 2.8 71% 1.34 0.00 1.34 0 0.91 0.05 0.98 1.0 0.051 34.62 47.63 0.075 1.47 0.94 0.21 0.80 1.05 1.0 0.039 4.99 64.85 0.105 3.29 2.38 2 7.81 500 1.8E-03 4.4E+02 3.0E-04 16 0.470 5901 0.08% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 2.06% 0.0034
16.240 5599.61 10.3 0.119 9.8 84.2 36.48 1.15%Sand-Slime Tailing 0.059 119.0 0.82 0.15 0.67 1 1.22 11.912 165.58 14.58 14 1.25% 2.7 47% 1.35 0.00 1.35 0 0.91 0.05 0.98 1.0 0.051 35.41 49.99 0.077 1.51 0.94 0.22 0.80 1.05 1.0 0.039 3.76 54.85 0.095 2.96 2.24 2 7.86 500 1.8E-03 4.6E+02 2.9E-04 10 0.219 7143 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.66% 0.0027
16.404 5599.45 10.7 0.142 10.3 64.6 28.00 1.33%Sand-Slime Tailing 0.059 119.0 0.83 0.15 0.67 1 1.21 12.466 173.27 15.05 15 1.44% 2.7 47% 1.36 0.00 1.36 0 0.90 0.05 0.98 1.0 0.051 35.58 50.62 0.078 1.53 0.94 0.22 0.80 1.05 1.0 0.039 3.89 58.50 0.099 3.04 2.29 2 7.91 500 1.8E-03 4.6E+02 2.9E-04 10 0.220 7121 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.69% 0.0028
16.568 5599.28 9.7 0.148 9.1 90.7 39.29 1.52%Sand-Slime Tailing 0.059 119.0 0.84 0.16 0.68 1 1.20 11.013 153.08 13.58 13 1.67% 2.8 47% 1.37 0.00 1.37 0 0.90 0.05 0.98 1.0 0.051 35.07 48.65 0.076 1.49 0.94 0.21 0.80 1.05 1.0 0.039 4.46 60.55 0.101 3.09 2.29 2 7.96 500 1.8E-03 4.6E+02 2.9E-04 10 0.220 7100 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.72% 0.0028
16.732 5599.12 11.2 0.142 10.7 72.9 31.59 1.27%Sand-Slime Tailing 0.059 119.0 0.85 0.16 0.68 1 1.20 12.872 178.92 15.58 15 1.37% 2.7 47% 1.38 0.00 1.38 0 0.90 0.05 0.98 1.0 0.051 35.77 51.35 0.079 1.55 0.94 0.23 0.80 1.05 1.0 0.040 3.73 58.07 0.098 2.99 2.27 2 8.01 500 1.8E-03 4.6E+02 2.9E-04 10 0.221 7080 0.07% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.74% 0.0029
16.896 5598.95 11.8 0.171 11.3 78.1 33.86 1.45%Sand-Slime Tailing 0.059 119.0 0.86 0.17 0.69 1 1.19 13.484 187.43 16.34 16 1.56% 2.7 47% 1.39 0.00 1.39 0 0.90 0.05 0.98 1.0 0.051 36.03 52.37 0.080 1.57 0.94 0.23 0.80 1.05 1.0 0.040 3.80 62.13 0.102 3.10 2.33 2 8.06 500 1.8E-03 4.6E+02 2.9E-04 10 0.221 7059 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.77% 0.0029
17.060 5598.79 12.0 0.161 11.4 83.5 36.17 1.35%Sand-Slime Tailing 0.059 119.0 0.87 0.18 0.69 1 1.19 13.567 188.59 16.48 16 1.45% 2.7 47% 1.40 0.00 1.40 0 0.90 0.05 0.98 1.0 0.051 36.08 52.56 0.080 1.58 0.94 0.23 0.80 1.04 1.0 0.040 3.67 60.46 0.101 3.02 2.30 2 8.11 500 1.8E-03 4.6E+02 3.0E-04 10 0.221 7038 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.80% 0.0030
17.224 5598.63 12.8 0.164 12.3 73.7 31.95 1.28%Sand-Slime Tailing 0.059 119.0 0.88 0.18 0.70 1 1.18 14.547 202.20 17.53 17 1.38% 2.6 47% 1.41 0.00 1.41 0 0.90 0.05 0.97 1.0 0.051 36.45 53.97 0.081 1.61 0.94 0.24 0.80 1.04 1.0 0.040 3.44 60.21 0.100 3.00 2.30 2 8.16 500 1.8E-03 4.6E+02 3.0E-04 10 0.222 7018 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.83% 0.0030
P = γeff*(Geff
/Gmax)
(tsf)
Volumetric Strain for Design Event, εv (%)
Incrementa
l Consolidation (ft)
CN
Volumetric
Strain for
Design
Event, εv (%)
Incremental Consolidation (ft)
TOTAL SEISMIC SETTLEMENT (FT):
Midpoint Depth at t1, z1
Shear Wave Velocity, Vs
Soil Density, ρ (tcf)b
Threshhol
d Shear Strain, γtv
(%)
Volumetri
c Strain at
15 Cycles,
εc-15 (%)Rc
Plasticity Index, PI g1 g2
Shear Strain, γ (%)a
Effective Stress at Bottom of Layer
Effective Stress at Midpoint of Layer FINAL COVER
Erosion Protection Layer
Water Storage/Rooting Zone Layer
qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Equil Pore Pressure at Midpoint of Layer (tsf)
Max Shear
Strain
Modulus,
Gmax (tsf)
Unit Weight (tcf)
Unit Weight (pcf)
Total Stress at Bottom of Layer
Total Stress at Midpoint of Layer
Equil Pore Pressure at Bottom of Layer
Cyclic Resistance Ratio
FoS
Cyclic Stress Ratio
FoS
∆qc1n qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Threshhol
d Shear
Strain, γtv (%)
Volumetric Strain at 15 Cycles, εc-15 (%)RcCNg1g2
Shear
Strain, γ ab
Seismic Settlement Analysis - Stewart et al (2004)
Shear Wave Velocity, Vs
High Compaction Layer
Platform/Random Fill Layer
Pw (u2)Pw (u2)
2013 CPT Data from ConeTec CPT Data Interpretations
fs/qt
Material
Type (as determined by fines
Unit Weight Unit Weight
Total
Stress
at time of CPT
Depth
at time of CPT Elevation qt fs qc
Effective
Stress at
time of CPT
Saturated
at time of CPT
Type Index,
Ic FC
Youd, et al (2001)
Max. Horiz. Acceleration, Amax/g: 0.15
Earthquake Moment Magnitude, M:
Idriss and Boulanger (2008)
Max. Horiz. Acceleration, Amax/g:
Earthquake Moment Magnitude, M:
Magnitude Scaling Factor, MSF:
WHITE MESA TAILINGS REPOSITORY LIQUEFACTION AND SEISMIC SETTLEMENT ANALYSES - 2W6-S Elev. at Top of Layer (ft)
Elev. At Midpoint of Layer (ft)
Elev. At Bottom of Layer
Thickness of Layer (ft)
5.5
Magnitude Scaling Factor, MSF:
Equil
Pore
Pressure at time of
Conditions at t1 Liquefaction Triggering AnalysesEquil
Pore Pressure at t1CN qc1 qc1 qc1N
Normalized
Cone
Penetration Resistance, Qt
Normalize
d Friction
Ratio, Fr (%)
Total Stress at t1 Liquefiable?1=Yes
2=No
Cyclic Stress RatioEffective Stress at t1
Saturated at t1
Idriss & Boulanger (2008)
CSR
M=7.5,
s'v=1atm
Kc
Scaling Factor for stress ration, rm
Volumetric Strain Ratio for Site-Specific Design Eart
Equiv. Number of Uniform Strain Cycles, N
Youd et al. (2001)
CSR
M=7.5,
s'v=1atm
Depth at t1, z1
Soil Density, ρ
Maximum Shear Strain
Modulus,
Gmax
P =
γeff*(Geff/Gmax)
Plastici
ty Index, PI
Liquef_SeismicSettle_30Aug2015.xls Page 12 of 29
Energy Fuels Resources (USA) Inc.White Mesa Mill
Seismic Settlement Analyses
Data File: 13-52106_SP2W6-S-BSC-CPT 5604.40 Water surface elevation during CPT investigation (ft 5615.85 Ground Surface Elevation at time of CPT (ft amsl)
Location: White Mesa 2013 CPT Investigation 0.15 5604.40 Water surface elevation at t0 (ft amsl)5625.41 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl)
..\..\..\6.2.3 Field Data\2013 Field Investigation\Conetec Dat 5.5 5588.59 Water surface elevation at t1 (ft amsl) 0.50 Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after pla ###### 5625.16 5624.91 0.50 0.055 110 0.028 0.014 0.00 0.00 0.028 0.014 0.08 508 1.7E-03 4.4E+02 3.0E-06 11 0.068 46696 0.00% 1.20 0.80 0.04% 0.000 0.32 0.133 0.778 0.00% 0.0000
Tailings Sands 1.69 5583.59 Water surface elevation at t2 (ft amsl)3.50 Thickness of Water Storage/Rooting Zone (ft)###### 5623.16 5621.41 3.50 0.054 107 0.215 0.121 0.00 0.00 0.215 0.121 0.69 508 1.7E-03 4.3E+02 2.8E-05 11 0.118 18930 0.00% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
Tailings Sand-Slimes 4.00 Thickness of High Compaction Layer (ft)###### 5619.41 5617.41 4.00 0.060 120 0.454 0.334 0.00 0.00 0.454 0.334 1.83 508 1.9E-03 4.8E+02 6.8E-05 11 0.153 12419 0.01% 0.65 0.75 0.02% 0.000 0.34 0.079 0.765 0.00% 0.0000
Tailings Slimes 1.44 1.56 Thickness of Random/Platform Fill on on top of existing interim cover (ft) ###### 5616.63 5615.85 1.56 0.050 101 0.533 0.493 0.00 0.00 0.533 0.493 2.68 508 1.6E-03 4.0E+02 1.2E-04 11 0.169 10568 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
Interim Cover 0.47 1065.26 Additional Stress due to Final Cover Placement, ΔσFC (psf)
Cells Requiring User Input/Manipulation 2.21 2.21 7.51 5583.59 Elevation of bottom of tailings (liner) (ft amsl)
0.481
rd Cσ Kσ Ka rd Dr f Kσ Ka Avg
(ft) (ft amsl) TSF TSF TSF (ft) PSI (%) (tcf) (pcf) (tsf)(tsf)(tsf) 1=Yes TSF MPa % (tsf)(tsf)(tsf) 1=Yes FoS m
0=No 0=No (ft/sec) (tcf) tsf tsf (%)
P = γeff*(Geff
/Gmax)
(tsf)
Volumetric Strain for Design Event, εv (%)
Incrementa
l Consolidation (ft)
CN
Volumetric
Strain for
Design
Event, εv (%)
Incremental Consolidation (ft)
TOTAL SEISMIC SETTLEMENT (FT):
Midpoint Depth at t1, z1
Shear Wave Velocity, Vs
Soil Density, ρ (tcf)b
Threshhol
d Shear Strain, γtv
(%)
Volumetri
c Strain at
15 Cycles,
εc-15 (%)Rc
Plasticity Index, PI g1 g2
Shear Strain, γ (%)a
Effective Stress at Bottom of Layer
Effective Stress at Midpoint of Layer FINAL COVER
Erosion Protection Layer
Water Storage/Rooting Zone Layer
qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Equil Pore Pressure at Midpoint of Layer (tsf)
Max Shear
Strain
Modulus,
Gmax (tsf)
Unit Weight (tcf)
Unit Weight (pcf)
Total Stress at Bottom of Layer
Total Stress at Midpoint of Layer
Equil Pore Pressure at Bottom of Layer
Cyclic Resistance Ratio
FoS
Cyclic Stress Ratio
FoS
∆qc1n qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Threshhol
d Shear
Strain, γtv (%)
Volumetric Strain at 15 Cycles, εc-15 (%)RcCNg1g2
Shear
Strain, γ ab
Seismic Settlement Analysis - Stewart et al (2004)
Shear Wave Velocity, Vs
High Compaction Layer
Platform/Random Fill Layer
Pw (u2)Pw (u2)
2013 CPT Data from ConeTec CPT Data Interpretations
fs/qt
Material
Type (as determined by fines
Unit Weight Unit Weight
Total
Stress
at time of CPT
Depth
at time of CPT Elevation qt fs qc
Effective
Stress at
time of CPT
Saturated
at time of CPT
Type Index,
Ic FC
Youd, et al (2001)
Max. Horiz. Acceleration, Amax/g: 0.15
Earthquake Moment Magnitude, M:
Idriss and Boulanger (2008)
Max. Horiz. Acceleration, Amax/g:
Earthquake Moment Magnitude, M:
Magnitude Scaling Factor, MSF:
WHITE MESA TAILINGS REPOSITORY LIQUEFACTION AND SEISMIC SETTLEMENT ANALYSES - 2W6-S Elev. at Top of Layer (ft)
Elev. At Midpoint of Layer (ft)
Elev. At Bottom of Layer
Thickness of Layer (ft)
5.5
Magnitude Scaling Factor, MSF:
Equil
Pore
Pressure at time of
Conditions at t1 Liquefaction Triggering AnalysesEquil
Pore Pressure at t1CN qc1 qc1 qc1N
Normalized
Cone
Penetration Resistance, Qt
Normalize
d Friction
Ratio, Fr (%)
Total Stress at t1 Liquefiable?1=Yes
2=No
Cyclic Stress RatioEffective Stress at t1
Saturated at t1
Idriss & Boulanger (2008)
CSR
M=7.5,
s'v=1atm
Kc
Scaling Factor for stress ration, rm
Volumetric Strain Ratio for Site-Specific Design Eart
Equiv. Number of Uniform Strain Cycles, N
Youd et al. (2001)
CSR
M=7.5,
s'v=1atm
Depth at t1, z1
Soil Density, ρ
Maximum Shear Strain
Modulus,
Gmax
P =
γeff*(Geff/Gmax)
Plastici
ty Index, PI
17.388 5598.46 10.4 0.217 9.9 73.6 31.89 2.09%Slime Tailings 0.057 113.1 0.89 0.19 0.70 1 1.17 11.637 161.76 14.14 14 2.29% 2.8 71% 1.42 0.00 1.42 0 0.90 0.05 0.98 1.0 0.051 35.01 49.16 0.077 1.52 0.94 0.22 0.80 1.04 1.0 0.040 4.98 70.37 0.112 3.34 2.43 2 8.21 500 1.8E-03 4.4E+02 3.2E-04 16 0.473 5767 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.29% 0.0038
17.552 5598.30 9.6 0.305 9.0 98.4 42.63 3.19%Slime Tailings 0.057 113.1 0.90 0.19 0.71 1 1.17 10.462 145.41 12.98 12 3.52% 3.0 71% 1.43 0.00 1.43 0 0.90 0.05 0.98 1.0 0.051 34.61 47.59 0.075 1.49 0.94 0.21 0.80 1.04 1.0 0.040 6.35 82.50 0.132 3.91 2.70 2 8.26 500 1.8E-03 4.4E+02 3.2E-04 16 0.474 5751 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.32% 0.0038
17.716 5598.13 12.3 0.378 11.6 110.0 47.65 3.07%Slime Tailings 0.057 113.1 0.90 0.20 0.71 1 1.16 13.532 188.09 16.64 16 3.31% 2.9 71% 1.44 0.00 1.44 0 0.89 0.05 0.97 1.0 0.050 35.88 52.53 0.080 1.59 0.94 0.24 0.80 1.04 1.0 0.040 5.27 87.75 0.143 4.20 2.89 2 8.31 500 1.8E-03 4.4E+02 3.2E-04 16 0.474 5736 0.09% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.35% 0.0038
17.880 5597.97 15.9 0.393 15.5 61.9 26.81 2.47%Slime Tailings 0.057 113.1 0.91 0.20 0.71 1 1.16 17.966 249.73 21.39 21 2.62% 2.7 71% 1.45 0.00 1.45 0 0.89 0.05 0.97 1.0 0.050 37.54 58.92 0.087 1.73 0.94 0.27 0.80 1.04 1.0 0.040 4.01 85.65 0.138 4.05 2.89 2 8.36 500 1.8E-03 4.4E+02 3.2E-04 16 0.474 5721 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.37% 0.0039
18.044 5597.81 13.0 0.378 12.5 74.4 32.24 2.91%Slime Tailings 0.057 113.1 0.92 0.21 0.72 1 1.15 14.435 200.65 17.39 17 3.13% 2.8 71% 1.46 0.00 1.46 0 0.89 0.05 0.97 1.0 0.050 36.14 53.53 0.081 1.61 0.94 0.24 0.80 1.04 1.0 0.040 5.00 87.01 0.141 4.11 2.86 2 8.41 500 1.8E-03 4.4E+02 3.2E-04 16 0.475 5706 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.40% 0.0039
18.208 5597.64 15.2 0.346 14.8 53.4 23.14 2.28%Sand-Slime Tailing 0.059 119.0 0.93 0.21 0.72 1 1.15 17.001 236.31 20.19 20 2.43% 2.7 47% 1.47 0.00 1.47 0 0.89 0.05 0.97 1.0 0.050 37.38 57.57 0.085 1.70 0.94 0.26 0.80 1.04 1.0 0.040 4.03 81.33 0.130 3.76 2.73 2 8.46 500 1.8E-03 4.6E+02 3.1E-04 10 0.224 6905 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.99% 0.0033
18.372 5597.48 20.1 0.278 20.0 22.1 9.56 1.38%Sand-Slime Tailing 0.059 119.0 0.94 0.22 0.73 1 1.13 22.670 315.11 26.51 26 1.45% 2.5 47% 1.48 0.00 1.48 0 0.89 0.06 0.97 1.0 0.050 39.60 66.11 0.095 1.90 0.93 0.30 0.80 1.03 1.0 0.040 2.63 69.61 0.111 3.20 2.55 2 8.51 500 1.8E-03 4.6E+02 3.1E-04 10 0.224 6886 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 2.02% 0.0033
18.537 5597.31 25.1 0.274 25.1 0.0 0.00 1.09%Sand-Slime Tailing 0.059 119.0 0.95 0.22 0.73 1 1.12 28.232 392.43 32.79 33 1.13% 2.3 47% 1.49 0.00 1.49 0 0.89 0.06 0.97 1.0 0.050 41.80 74.59 0.105 2.12 0.93 0.33 0.80 1.03 1.0 0.040 2.05 67.17 0.108 3.09 2.61 2 8.56 500 1.8E-03 4.6E+02 3.1E-04 10 0.225 6868 0.08% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 2.05% 0.0034
18.701 5597.15 25.6 0.284 25.6 -1.5 -0.63 1.11%Sand-Slime Tailing 0.059 119.0 0.96 0.23 0.74 1 1.12 28.599 397.53 33.20 33 1.15% 2.3 47% 1.50 0.00 1.50 0 0.89 0.06 0.97 1.0 0.050 41.95 75.15 0.106 2.14 0.93 0.33 0.80 1.03 1.0 0.040 2.05 68.05 0.109 3.10 2.62 2 8.61 500 1.8E-03 4.6E+02 3.2E-04 10 0.225 6849 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.08% 0.0034
18.865 5596.99 26.1 0.274 26.0 4.6 1.98 1.05%Sand-Slime Tailing 0.059 119.0 0.97 0.23 0.74 1 1.11 28.952 402.43 33.66 34 1.09% 2.3 47% 1.50 0.00 1.50 0 0.89 0.06 0.97 1.0 0.049 42.11 75.77 0.107 2.16 0.93 0.33 0.80 1.03 1.0 0.040 1.99 66.98 0.108 3.05 2.61 2 8.66 500 1.8E-03 4.6E+02 3.2E-04 10 0.225 6831 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.10% 0.0035
19.029 5596.82 26.3 0.324 26.2 6.9 2.99 1.23%Sand-Slime Tailing 0.059 119.0 0.98 0.24 0.75 1 1.11 29.032 403.54 33.77 34 1.28% 2.4 47% 1.51 0.00 1.51 0 0.88 0.06 0.97 1.0 0.049 42.15 75.92 0.107 2.17 0.93 0.34 0.80 1.03 1.0 0.040 2.12 71.66 0.114 3.21 2.69 2 8.71 500 1.8E-03 4.6E+02 3.2E-04 10 0.226 6812 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.13% 0.0035
19.193 5596.66 19.7 0.359 19.6 11.6 5.03 1.82%Sand-Slime Tailing 0.059 119.0 0.99 0.24 0.75 1 1.11 21.744 302.25 25.35 25 1.92% 2.6 47% 1.52 0.00 1.52 0 0.88 0.06 0.97 1.0 0.049 39.19 64.54 0.093 1.88 0.93 0.29 0.80 1.03 1.0 0.040 3.10 78.57 0.125 3.49 2.69 2 8.76 500 1.8E-03 4.6E+02 3.2E-04 10 0.226 6794 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.16% 0.0035
19.357 5596.49 17.3 0.409 17.2 10.2 4.42 2.36%Sand-Slime Tailing 0.059 119.0 1.00 0.25 0.75 1 1.11 19.087 265.31 22.25 22 2.51% 2.7 47% 1.53 0.00 1.53 0 0.88 0.05 0.97 1.0 0.049 38.11 60.36 0.088 1.79 0.93 0.27 0.80 1.03 1.0 0.040 3.85 85.76 0.139 3.85 2.82 2 8.81 500 1.8E-03 4.6E+02 3.2E-04 10 0.227 6776 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.19% 0.0036
19.521 5596.33 21.7 0.317 21.6 11.8 5.13 1.46%Sand-Slime Tailing 0.059 119.0 1.01 0.25 0.76 1 1.10 23.745 330.06 27.67 27 1.53% 2.5 47% 1.54 0.00 1.54 0 0.88 0.06 0.97 1.0 0.049 40.01 67.68 0.097 1.97 0.93 0.30 0.80 1.03 1.0 0.040 2.63 72.87 0.116 3.20 2.58 2 8.86 500 1.8E-03 4.6E+02 3.3E-04 10 0.227 6758 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.22% 0.0036
19.685 5596.17 22.7 0.488 22.7 9.2 3.99 2.15%Sand-Slime Tailing 0.059 119.0 1.02 0.26 0.76 1 1.09 24.734 343.80 28.80 28 2.25% 2.6 47% 1.55 0.00 1.55 0 0.88 0.06 0.97 1.0 0.049 40.40 69.20 0.099 2.01 0.93 0.31 0.80 1.02 1.0 0.040 3.07 88.53 0.145 3.96 2.99 2 8.91 538 1.8E-03 5.3E+02 2.8E-04 10 0.227 6741 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.52% 0.0025
19.849 5596.00 19.2 0.558 19.2 4.8 2.06 2.91%Slime Tailings 0.057 113.1 1.03 0.26 0.77 1 1.09 20.883 290.27 24.29 24 3.07% 2.7 71% 1.56 0.00 1.56 0 0.88 0.06 0.97 1.0 0.049 38.55 62.84 0.091 1.86 0.93 0.28 0.80 1.02 1.0 0.040 4.03 97.81 0.167 4.56 3.21 2 8.96 538 1.8E-03 5.1E+02 3.0E-04 16 0.479 5542 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.93% 0.0032
20.013 5595.84 17.8 0.580 17.8 9.9 4.27 3.26%Slime Tailings 0.057 113.1 1.04 0.27 0.77 1 1.09 19.301 268.29 22.49 22 3.46% 2.8 71% 1.57 0.00 1.57 0 0.88 0.05 0.97 1.0 0.049 37.92 60.42 0.088 1.80 0.93 0.27 0.80 1.02 1.0 0.040 4.49 101.07 0.176 4.78 3.29 2 9.01 538 1.8E-03 5.1E+02 3.0E-04 16 0.479 5528 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.96% 0.0032
20.177 5595.67 16.5 0.428 16.5 3.3 1.42 2.59%Slime Tailings 0.057 113.1 1.05 0.27 0.78 1 1.08 17.865 248.32 20.77 20 2.77% 2.7 71% 1.58 0.00 1.58 0 0.87 0.05 0.97 1.0 0.049 37.32 58.10 0.086 1.75 0.93 0.26 0.80 1.02 1.0 0.040 4.25 88.39 0.144 3.90 2.82 2 9.06 538 1.8E-03 5.1E+02 3.0E-04 16 0.479 5515 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.98% 0.0032
20.341 5595.51 16.1 0.364 15.8 46.6 20.19 2.26%Sand-Slime Tailing 0.059 119.0 1.06 0.28 0.78 1 1.08 17.027 236.67 20.14 19 2.42% 2.7 47% 1.59 0.00 1.59 0 0.87 0.05 0.97 1.0 0.049 37.36 57.50 0.085 1.74 0.93 0.26 0.80 1.02 1.0 0.040 4.08 82.25 0.132 3.54 2.64 2 9.11 538 1.8E-03 5.3E+02 2.9E-04 10 0.229 6674 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.60% 0.0026
20.505 5595.35 17.0 0.387 16.6 69.6 30.17 2.27%Sand-Slime Tailing 0.059 119.0 1.07 0.28 0.79 1 1.07 17.836 247.93 21.26 20 2.42% 2.7 47% 1.60 0.00 1.60 0 0.87 0.05 0.97 1.0 0.049 37.76 59.02 0.087 1.78 0.93 0.27 0.80 1.02 1.0 0.040 3.94 83.73 0.135 3.60 2.69 2 9.16 538 1.8E-03 5.3E+02 2.9E-04 10 0.229 6657 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.63% 0.0027
20.669 5595.18 17.8 0.559 17.1 110.3 47.80 3.15%Slime Tailings 0.057 113.1 1.08 0.29 0.79 1 1.07 18.247 253.63 22.05 21 3.35% 2.8 71% 1.61 0.00 1.61 0 0.87 0.05 0.97 1.0 0.049 37.77 59.81 0.088 1.80 0.93 0.27 0.80 1.02 1.0 0.040 4.50 99.19 0.171 4.55 3.18 2 9.21 538 1.8E-03 5.1E+02 3.1E-04 16 0.480 5474 0.08% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 2.05% 0.0034
20.833 5595.02 20.8 0.452 20.2 105.5 45.73 2.17%Sand-Slime Tailing 0.059 119.0 1.09 0.29 0.79 1 1.06 21.444 298.07 25.72 25 2.29% 2.6 47% 1.62 0.00 1.62 0 0.87 0.06 0.96 1.0 0.048 39.32 65.04 0.094 1.93 0.93 0.29 0.80 1.02 1.0 0.040 3.37 86.69 0.141 3.73 2.83 2 9.26 538 1.8E-03 5.3E+02 3.0E-04 10 0.230 6625 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.67% 0.0027
20.997 5594.85 32.5 0.419 32.2 39.9 17.27 1.29%Sand-Slime Tailing 0.059 119.0 1.10 0.30 0.80 1 1.05 33.912 471.38 39.69 39 1.33% 2.3 47% 1.63 0.00 1.63 0 0.87 0.06 0.96 1.0 0.048 44.22 83.91 0.118 2.45 0.93 0.36 0.80 1.01 1.0 0.040 1.98 78.44 0.125 3.30 2.88 2 9.31 538 1.8E-03 5.3E+02 3.0E-04 10 0.230 6608 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.69% 0.0028
21.161 5594.69 30.5 0.438 30.5 -5.4 -2.35 1.44%Sand-Slime Tailing 0.059 119.0 1.11 0.30 0.80 1 1.05 32.002 444.83 37.13 37 1.49% 2.4 47% 1.64 0.00 1.64 0 0.87 0.06 0.96 1.0 0.048 43.32 80.45 0.113 2.36 0.92 0.35 0.80 1.01 1.0 0.040 2.16 80.34 0.128 3.37 2.86 2 9.36 538 1.8E-03 5.3E+02 3.0E-04 10 0.230 6592 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.72% 0.0028
21.325 5594.52 26.6 0.429 26.6 10.9 4.71 1.61%Sand-Slime Tailing 0.059 119.0 1.12 0.31 0.81 1 1.05 27.780 386.14 32.35 32 1.68% 2.4 47% 1.65 0.00 1.65 0 0.87 0.06 0.96 1.0 0.048 41.65 73.99 0.105 2.18 0.92 0.33 0.80 1.01 1.0 0.040 2.50 80.95 0.129 3.39 2.78 2 9.41 538 1.8E-03 5.3E+02 3.0E-04 10 0.231 6576 0.07% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.74% 0.0029
21.489 5594.36 31.3 0.445 31.2 10.5 4.56 1.42%Sand-Slime Tailing 0.059 119.0 1.13 0.31 0.81 1 1.04 32.472 451.36 37.79 37 1.48% 2.4 47% 1.66 0.00 1.66 0 0.86 0.06 0.96 1.0 0.048 43.56 81.35 0.114 2.39 0.92 0.35 0.80 1.01 1.0 0.040 2.13 80.68 0.129 3.36 2.87 2 9.46 538 1.8E-03 5.3E+02 3.0E-04 10 0.231 6560 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.76% 0.0029
21.653 5594.20 33.9 0.558 33.9 8.4 3.65 1.64%Sand-Slime Tailing 0.059 119.0 1.14 0.32 0.82 1 1.04 35.087 487.71 40.81 40 1.70% 2.4 47% 1.67 0.00 1.67 0 0.86 0.07 0.96 1.0 0.048 44.62 85.43 0.120 2.52 0.92 0.37 0.80 1.01 1.0 0.040 2.17 88.64 0.145 3.76 3.14 2 9.51 538 1.8E-03 5.3E+02 3.0E-04 10 0.231 6544 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.79% 0.0029
21.817 5594.03 28.7 0.579 28.7 11.6 5.03 2.01%Sand-Slime Tailing 0.059 119.0 1.15 0.32 0.82 1 1.03 29.609 411.56 34.48 34 2.10% 2.5 47% 1.68 0.00 1.68 0 0.86 0.06 0.96 1.0 0.048 42.39 76.87 0.108 2.27 0.92 0.34 0.80 1.01 1.0 0.040 2.68 92.26 0.153 3.96 3.11 2 9.56 538 1.8E-03 5.3E+02 3.1E-04 10 0.232 6528 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.81% 0.0030
21.981 5593.87 32.2 0.577 32.1 12.6 5.46 1.79%Sand-Slime Tailing 0.059 119.0 1.16 0.33 0.83 1 1.03 33.006 458.78 38.43 38 1.86% 2.4 47% 1.69 0.00 1.69 0 0.86 0.06 0.96 1.0 0.048 43.78 82.21 0.116 2.43 0.92 0.36 0.80 1.01 1.0 0.040 2.36 90.58 0.149 3.84 3.13 2 9.61 538 1.8E-03 5.3E+02 3.1E-04 10 0.232 6512 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.83% 0.0030
22.145 5593.70 31.5 0.519 31.4 11.5 4.97 1.65%Sand-Slime Tailing 0.059 119.0 1.17 0.33 0.83 1 1.02 32.168 447.13 37.45 36 1.71% 2.4 47% 1.70 0.00 1.70 0 0.86 0.06 0.96 1.0 0.048 43.43 80.88 0.114 2.40 0.92 0.35 0.80 1.01 1.0 0.040 2.31 86.41 0.140 3.59 2.99 2 9.66 538 1.8E-03 5.3E+02 3.1E-04 10 0.232 6497 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.85% 0.0030
22.309 5593.54 38.3 0.405 38.2 9.8 4.23 1.06%Sand-Slime Tailing 0.059 119.0 1.18 0.34 0.84 1 1.02 38.964 541.60 45.33 44 1.09% 2.2 47% 1.71 0.00 1.71 0 0.86 0.07 0.95 1.0 0.047 46.20 91.53 0.129 2.73 0.91 0.39 0.80 1.01 1.0 0.040 1.70 77.22 0.123 3.14 2.93 2 9.71 538 1.8E-03 5.3E+02 3.1E-04 10 0.233 6481 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.88% 0.0031
22.473 5593.38 36.9 0.465 36.9 8.3 3.58 1.26%Sand-Slime Tailing 0.059 119.0 1.18 0.34 0.84 1 1.02 37.469 520.81 43.58 43 1.30% 2.3 47% 1.72 0.00 1.72 0 0.86 0.07 0.95 1.0 0.047 45.59 89.16 0.126 2.66 0.91 0.38 0.80 1.00 1.0 0.040 1.87 81.40 0.130 3.31 2.99 2 9.76 538 1.8E-03 5.3E+02 3.1E-04 10 0.233 6466 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.90% 0.0031
22.638 5593.21 38.4 0.519 38.4 9.0 3.91 1.35%Sand-Slime Tailing 0.059 119.0 1.19 0.35 0.85 1 1.01 38.805 539.39 45.14 44 1.39% 2.3 47% 1.73 0.00 1.73 0 0.85 0.07 0.95 1.0 0.047 46.13 91.27 0.129 2.74 0.91 0.39 0.80 1.00 1.0 0.040 1.89 85.12 0.137 3.48 3.11 2 9.81 538 1.8E-03 5.3E+02 3.1E-04 10 0.233 6451 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.92% 0.0032
22.802 5593.05 41.4 0.519 41.3 10.3 4.46 1.25%Sand-Slime Tailing 0.059 119.0 1.20 0.35 0.85 1 1.01 41.633 578.70 48.43 47 1.29% 2.2 47% 1.74 0.00 1.74 0 0.85 0.07 0.95 1.0 0.047 47.29 95.72 0.136 2.89 0.91 0.40 0.80 1.00 1.0 0.040 1.76 85.15 0.137 3.47 3.18 2 9.86 538 1.8E-03 5.3E+02 3.2E-04 10 0.234 6436 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.95% 0.0032
22.966 5592.88 42.6 0.493 42.5 9.8 4.23 1.16%Sand-Slime Tailing 0.059 119.0 1.21 0.36 0.85 1 1.00 42.702 593.55 49.67 48 1.19% 2.2 47% 1.75 0.00 1.75 0 0.85 0.07 0.95 1.0 0.047 47.72 97.39 0.138 2.96 0.91 0.41 0.80 1.00 1.0 0.040 1.68 83.56 0.134 3.37 3.16 2 9.91 538 1.8E-03 5.3E+02 3.2E-04 10 0.234 6421 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.97% 0.0032
23.130 5592.72 41.6 0.532 41.6 11.5 4.97 1.28%Sand-Slime Tailing 0.059 119.0 1.22 0.36 0.86 1 1.00 41.593 578.15 48.39 47 1.32% 2.2 47% 1.76 0.00 1.76 0 0.85 0.07 0.95 1.0 0.047 47.27 95.66 0.136 2.90 0.91 0.40 0.80 1.00 1.0 0.040 1.78 85.96 0.139 3.48 3.19 2 9.96 538 1.8E-03 5.3E+02 3.2E-04 10 0.234 6406 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.99% 0.0033
23.294 5592.56 42.3 0.534 42.2 13.1 5.66 1.26%Sand-Slime Tailing 0.059 119.0 1.23 0.37 0.86 1 1.00 42.088 585.03 48.98 47 1.30% 2.2 47% 1.77 0.00 1.77 0 0.85 0.07 0.95 1.0 0.047 47.48 96.46 0.137 2.93 0.91 0.40 0.80 1.00 1.0 0.040 1.76 86.10 0.139 3.47 3.20 2 10.01 538 1.8E-03 5.3E+02 3.2E-04 10 0.235 6391 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 2.01% 0.0033
23.458 5592.39 47.2 0.593 47.2 13.5 5.86 1.26%Sand-Slime Tailing 0.059 119.0 1.24 0.37 0.87 1 0.99 46.893 651.82 54.56 53 1.29% 2.2 47% 1.78 0.00 1.78 0 0.85 0.07 0.95 1.0 0.046 49.44 104.00 0.149 3.22 0.91 0.43 0.79 1.00 1.0 0.040 1.66 90.30 0.148 3.69 3.45 2 10.06 538 1.8E-03 5.3E+02 3.2E-04 10 0.235 6377 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 2.04% 0.0033
23.622 5592.23 49.1 0.674 49.0 13.7 5.94 1.37%Sand-Slime Tailing 0.059 119.0 1.25 0.38 0.87 1 0.99 48.576 675.21 56.52 55 1.41% 2.2 47% 1.79 0.00 1.79 0 0.85 0.08 0.95 1.0 0.046 50.12 106.64 0.154 3.32 0.90 0.43 0.78 1.00 1.0 0.040 1.68 95.21 0.160 3.96 3.64 2 10.11 538 1.8E-03 5.3E+02 3.3E-04 10 0.235 6362 0.08% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 2.06% 0.0034
23.786 5592.06 47.0 0.774 46.9 14.2 6.14 1.65%Sand-Slime Tailing 0.059 119.0 1.26 0.38 0.88 1 0.99 46.335 644.06 53.92 52 1.69% 2.3 47% 1.80 0.00 1.80 0 0.85 0.07 0.95 1.0 0.046 49.21 103.13 0.148 3.20 0.90 0.42 0.79 1.00 1.0 0.040 1.87 100.76 0.175 4.31 3.76 2 10.16 538 1.8E-03 5.3E+02 3.3E-04 10 0.236 6348 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.08% 0.0034
23.950 5591.90 41.4 0.772 41.4 13.6 5.88 1.86%Sand-Slime Tailing 0.059 119.0 1.27 0.39 0.88 1 0.98 40.695 565.65 47.36 46 1.92% 2.4 47% 1.81 0.00 1.81 0 0.84 0.07 0.95 1.0 0.046 46.91 94.27 0.133 2.88 0.90 0.40 0.80 1.00 1.0 0.040 2.14 101.19 0.176 4.33 3.61 2 10.21 538 1.8E-03 5.3E+02 3.3E-04 10 0.236 6334 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.11% 0.0035
24.114 5591.74 41.1 0.727 41.0 13.4 5.82 1.77%Sand-Slime Tailing 0.059 119.0 1.28 0.40 0.89 1 0.98 40.240 559.34 46.83 45 1.82% 2.3 47% 1.82 0.00 1.82 0 0.84 0.07 0.95 1.0 0.046 46.73 93.56 0.132 2.86 0.90 0.40 0.80 0.99 1.0 0.040 2.10 98.40 0.169 4.12 3.49 2 10.26 538 1.8E-03 5.3E+02 3.3E-04 10 0.236 6320 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.13% 0.0035
24.278 5591.57 37.0 0.661 36.9 13.4 5.82 1.79%Sand-Slime Tailing 0.059 119.0 1.29 0.40 0.89 1 0.98 36.033 500.86 41.95 40 1.85% 2.4 47% 1.82 0.00 1.82 0 0.84 0.07 0.95 1.0 0.046 45.01 86.96 0.122 2.65 0.90 0.37 0.80 0.99 1.0 0.040 2.26 94.94 0.160 3.89 3.27 2 10.31 538 1.8E-03 5.3E+02 3.3E-04 10 0.237 6306 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.15% 0.0035
24.442 5591.41 32.5 0.603 32.4 13.5 5.86 1.85%Sand-Slime Tailing 0.059 119.0 1.30 0.41 0.90 1 0.97 31.538 438.38 36.73 35 1.93% 2.4 47% 1.83 0.00 1.83 0 0.84 0.06 0.95 1.0 0.046 43.18 79.91 0.113 2.43 0.90 0.35 0.80 0.99 1.0 0.040 2.51 92.27 0.153 3.71 3.07 2 10.36 538 1.8E-03 5.3E+02 3.3E-04 10 0.237 6292 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.18% 0.0036
24.606 5591.24 31.6 0.528 31.5 13.5 5.86 1.67%Sand-Slime Tailing 0.059 119.0 1.31 0.41 0.90 1 0.97 30.546 424.59 35.57 34 1.74% 2.4 47% 1.84 0.00 1.84 0 0.84 0.06 0.95 1.0 0.046 42.78 78.35 0.110 2.39 0.90 0.34 0.80 0.99 1.0 0.040 2.44 86.95 0.141 3.41 2.90 2 10.41 538 1.8E-03 5.3E+02 3.4E-04 10 0.237 6278 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.20% 0.0036
24.770 5591.08 31.6 0.507 31.5 15.0 6.51 1.60%Sand-Slime Tailing 0.059 119.0 1.32 0.42 0.91 1 0.97 30.436 423.06 35.45 33 1.67% 2.4 47% 1.85 0.00 1.85 0 0.84 0.06 0.95 1.0 0.046 42.74 78.19 0.110 2.39 0.89 0.34 0.80 0.99 1.0 0.040 2.41 85.32 0.138 3.32 2.85 2 10.46 594 1.8E-03 6.5E+02 2.8E-04 10 0.238 6264 0.05% 2.00 0.65 0.03% 0.009 0.34 0.079 0.765 1.31% 0.0021
24.934 5590.92 32.8 0.414 32.7 16.5 7.16 1.26%Sand-Slime Tailing 0.059 119.0 1.33 0.42 0.91 1 0.96 31.433 436.92 36.62 35 1.32% 2.4 47% 1.86 0.00 1.86 0 0.84 0.06 0.95 1.0 0.046 43.15 79.77 0.112 2.44 0.89 0.35 0.80 0.99 1.0 0.040 2.12 77.71 0.124 2.97 2.71 2 10.51 594 1.8E-03 6.5E+02 2.8E-04 10 0.238 6251 0.05% 2.00 0.65 0.03% 0.009 0.34 0.079 0.765 1.33% 0.0022
25.098 5590.75 34.3 0.437 34.2 17.3 7.49 1.27%Sand-Slime Tailing 0.059 119.0 1.34 0.43 0.92 1 0.96 32.804 455.97 38.22 36 1.33% 2.3 47% 1.87 0.00 1.87 0 0.83 0.06 0.95 1.0 0.046 43.71 81.93 0.115 2.51 0.89 0.36 0.80 0.99 1.0 0.040 2.07 79.27 0.126 3.02 2.77 2 10.56 594 1.8E-03 6.5E+02 2.8E-04 10 0.238 6237 0.05% 2.00 0.65 0.03% 0.009 0.34 0.079 0.765 1.34% 0.0022
25.262 5590.59 36.0 0.512 35.9 14.2 6.17 1.42%Sand-Slime Tailing 0.059 119.0 1.35 0.43 0.92 1 0.96 34.352 477.49 40.00 38 1.48% 2.3 47% 1.88 0.00 1.88 0 0.83 0.06 0.95 1.0 0.046 44.33 84.32 0.119 2.60 0.89 0.37 0.80 0.99 1.0 0.040 2.12 84.60 0.136 3.25 2.92 2 10.61 594 1.8E-03 6.5E+02 2.8E-04 10 0.239 6224 0.05% 2.00 0.65 0.03% 0.009 0.34 0.079 0.765 1.36% 0.0022
25.426 5590.42 41.3 0.688 41.2 15.1 6.55 1.67%Sand-Slime Tailing 0.059 119.0 1.36 0.44 0.92 1 0.95 39.342 546.86 45.80 43 1.72% 2.3 47% 1.89 0.00 1.89 0 0.83 0.07 0.95 1.0 0.045 46.36 92.16 0.130 2.86 0.89 0.39 0.80 0.99 1.0 0.040 2.09 95.76 0.162 3.84 3.35 2 10.66 594 1.8E-03 6.5E+02 2.8E-04 10 0.239 6210 0.05% 2.00 0.65 0.03% 0.009 0.34 0.079 0.765 1.38% 0.0023
25.590 5590.26 34.2 0.767 34.1 15.3 6.63 2.24%Sand-Slime Tailing 0.059 119.0 1.37 0.44 0.93 1 0.95 32.336 449.47 37.66 35 2.34% 2.5 47% 1.90 0.00 1.90 0 0.83 0.06 0.95 1.0 0.046 43.51 81.17 0.114 2.51 0.89 0.35 0.80 0.98 1.0 0.040 2.74 103.10 0.182 4.31 3.41 2 10.71 594 1.8E-03 6.5E+02 2.8E-04 10 0.239 6197 0.06% 2.00 0.65 0.03% 0.009 0.34 0.079 0.765 1.40% 0.0023
25.754 5590.10 26.7 0.796 26.6 16.0 6.92 2.98%Slime Tailings 0.057 113.1 1.38 0.45 0.93 1 0.94 25.105 348.96 29.27 27 3.14% 2.7 71% 1.91 0.00 1.91 0 0.83 0.06 0.95 1.0 0.046 40.28 69.55 0.099 2.17 0.89 0.31 0.80 0.98 1.0 0.040 3.74 109.38 0.202 4.76 3.46 2 10.76 594 1.8E-03 6.2E+02 3.0E-04 16 0.490 5101 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.77% 0.0029
25.918 5589.93 29.3 0.592 29.2 15.0 6.51 2.02%Sand-Slime Tailing 0.059 119.0 1.39 0.45 0.94 1 0.94 27.443 381.46 31.98 30 2.12% 2.5 47% 1.92 0.00 1.92 0 0.83 0.06 0.95 1.0 0.046 41.52 73.49 0.104 2.28 0.89 0.33 0.80 0.98 1.0 0.040 2.90 92.83 0.154 3.63 2.96 2 10.81 594 1.8E-03 6.5E+02 2.9E-04 10 0.240 6172 0.06% 2.00 0.65 0.03% 0.009 0.34 0.079 0.765 1.43% 0.0023
26.082 5589.77 35.4 0.454 35.3 14.3 6.19 1.28%Sand-Slime Tailing 0.059 119.0 1.40 0.46 0.94 1 0.94 33.177 461.16 38.63 36 1.34% 2.3 47% 1.93 0.00 1.93 0 0.83 0.06 0.95 1.0 0.045 43.85 82.48 0.116 2.56 0.88 0.36 0.80 0.98 1.0 0.040 2.08 80.35 0.128 3.01 2.78 2 10.86 594 1.8E-03 6.5E+02 2.9E-04 10 0.240 6159 0.06% 2.00 0.65 0.03% 0.009 0.34 0.079 0.765 1.45% 0.0024
26.246 5589.60 36.2 0.371 36.2 3.2 1.39 1.02%Sand-Slime Tailing 0.059 119.0 1.41 0.46 0.95 1 0.94 33.911 471.36 39.41 37 1.07% 2.3 47% 1.94 0.00 1.94 0 0.82 0.06 0.95 1.0 0.045 44.12 83.53 0.118 2.60 0.88 0.36 0.80 0.98 1.0 0.040 1.88 73.99 0.118 2.75 2.67 2 10.91 594 1.8E-03 6.5E+02 2.9E-04 10 0.240 6146 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.46% 0.0024
26.410 5589.44 36.1 0.419 36.1 4.6 1.98 1.16%Sand-Slime Tailing 0.059 119.0 1.42 0.47 0.95 1 0.93 33.729 468.84 39.21 36 1.21% 2.3 47% 1.95 0.00 1.95 0 0.82 0.06 0.95 1.0 0.045 44.05 83.26 0.117 2.60 0.88 0.36 0.80 0.98 1.0 0.040 1.98 77.62 0.123 2.87 2.74 2 10.96 594 1.8E-03 6.5E+02 2.9E-04 10 0.241 6133 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.48% 0.0024
26.574 5589.28 33.9 0.531 33.8 12.8 5.56 1.57%Sand-Slime Tailing 0.059 119.0 1.43 0.47 0.96 1 0.93 31.447 437.12 36.61 34 1.63% 2.4 47% 1.96 0.00 1.96 0 0.82 0.06 0.95 1.0 0.045 43.14 79.75 0.112 2.49 0.88 0.35 0.80 0.98 1.0 0.040 2.36 86.38 0.140 3.25 2.87 2 11.01 594 1.8E-03 6.5E+02 2.9E-04 10 0.241 6120 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.50% 0.0025
26.739 5589.11 36.3 0.568 36.2 16.5 7.16 1.57%Sand-Slime Tailing 0.059 119.0 1.44 0.48 0.96 1 0.93 33.570 466.63 39.10 36 1.63% 2.4 47% 1.97 0.00 1.97 0 0.82 0.06 0.95 1.0 0.045 44.01 83.12 0.117 2.60 0.88 0.36 0.80 0.98 1.0 0.040 2.26 88.48 0.144 3.34 2.97 2 11.06 594 1.8E-03 6.5E+02 2.9E-04 10 0.241 6108 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.52% 0.0025
26.903 5588.95 38.8 0.595 38.7 16.5 7.16 1.53%Sand-Slime Tailing 0.059 119.0 1.45 0.48 0.97 1 0.93 35.865 498.52 41.77 39 1.59% 2.4 47% 1.98 0.00 1.98 0 0.82 0.07 0.95 1.0 0.045 44.95 86.72 0.122 2.73 0.88 0.37 0.80 0.98 1.0 0.040 2.15 89.86 0.147 3.40 3.06 2 11.11 594 1.8E-03 6.5E+02 3.0E-04 10 0.242 6095 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.53% 0.0025
27.067 5588.78 39.4 0.647 39.3 18.0 7.81 1.64%Sand-Slime Tailing 0.059 119.0 1.46 0.49 0.97 1 0.92 36.285 504.36 42.26 39 1.70% 2.4 47% 1.99 0.00 1.99 0 0.82 0.07 0.94 1.0 0.045 45.12 87.39 0.123 2.76 0.88 0.38 0.80 0.98 1.0 0.040 2.21 93.25 0.155 3.57 3.16 2 11.16 594 1.8E-03 6.5E+02 3.0E-04 10 0.242 6083 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.55% 0.0025
27.231 5588.62 40.3 0.712 40.2 20.4 8.83 1.77%Sand-Slime Tailing 0.059 119.0 1.47 0.49 0.98 1 0.92 37.005 514.36 43.11 40 1.83% 2.4 47% 2.00 0.00 2.00 0 0.82 0.07 0.94 1.0 0.045 45.42 88.54 0.125 2.80 0.87 0.38 0.80 0.98 1.0 0.040 2.26 97.33 0.166 3.80 3.30 2 11.21 594 1.8E-03 6.5E+02 3.0E-04 10 0.242 6071 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.57% 0.0026
27.395 5588.46 41.4 0.723 41.3 21.0 9.12 1.75%Sand-Slime Tailing 0.059 119.0 1.48 0.50 0.98 1 0.92 37.919 527.07 44.18 41 1.81% 2.4 47% 2.01 0.00 2.01 1 0.82 0.07 0.94 1.0 0.045 45.80 89.98 0.127 2.85 0.87 0.38 0.80 0.97 1.0 0.040 2.21 97.80 0.167 3.80 3.33 2 11.26 594 1.8E-03 6.5E+02 3.0E-04 10 0.242 6064 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.59% 0.0026
27.559 5588.29 42.9 0.670 42.8 19.2 8.30 1.56%Sand-Slime Tailing 0.059 119.0 1.49 0.50 0.98 1 0.92 39.157 544.29 45.61 42 1.62% 2.3 47% 2.02 0.01 2.01 1 0.81 0.07 0.94 1.0 0.045 46.30 91.90 0.130 2.91 0.87 0.39 0.80 0.97 1.0 0.040 2.07 94.21 0.158 3.57 3.24 2 11.31 594 1.8E-03 6.5E+02 3.0E-04 10 0.243 6058 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.61% 0.0026
27.723 5588.13 42.3 0.619 42.2 18.1 7.86 1.46%Sand-Slime Tailing 0.059 119.0 1.50 0.51 0.99 1 0.91 38.500 535.15 44.84 41 1.52% 2.3 47% 2.03 0.01 2.01 1 0.81 0.07 0.94 1.0 0.045 46.03 90.86 0.128 2.88 0.87 0.39 0.80 0.97 1.0 0.040 2.03 90.98 0.150 3.38 3.13 2 11.36 594 1.8E-03 6.5E+02 3.0E-04 10 0.243 6052 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.62% 0.0027
27.887 5587.96 42.4 0.626 42.2 20.2 8.77 1.48%Sand-Slime Tailing 0.059 119.0 1.51 0.51 0.99 1 0.91 38.435 534.24 44.77 41 1.53% 2.3 47% 2.04 0.02 2.02 1 0.81 0.07 0.94 1.0 0.045 46.00 90.78 0.128 2.87 0.87 0.39 0.80 0.97 1.0 0.040 2.04 91.41 0.151 3.38 3.13 2 11.41 594 1.8E-03 6.5E+02 3.1E-04 10 0.243 6046 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.64% 0.0027
28.051 5587.80 39.8 0.634 39.7 20.9 9.07 1.59%Sand-Slime Tailing 0.059 119.0 1.52 0.52 1.00 1 0.91 35.941 499.57 41.88 38 1.66% 2.4 47% 2.05 0.02 2.02 1 0.81 0.07 0.94 1.0 0.045 44.99 86.87 0.122 2.74 0.87 0.37 0.80 0.97 1.0 0.040 2.20 92.24 0.153 3.41 3.07 2 11.46 594 1.8E-03 6.5E+02 3.1E-04 10 0.243 6040 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.66% 0.0027
28.215 5587.64 43.4 0.590 43.3 19.6 8.48 1.36%Sand-Slime Tailing 0.059 119.0 1.53 0.52 1.00 1 0.90 39.142 544.07 45.59 42 1.41% 2.3 47% 2.06 0.03 2.03 1 0.81 0.07 0.94 1.0 0.045 46.29 91.88 0.130 2.91 0.87 0.39 0.80 0.97 1.0 0.040 1.95 89.01 0.146 3.22 3.07 2 11.51 594 1.8E-03 6.5E+02 3.1E-04 10 0.243 6035 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.68% 0.0028
28.379 5587.47 44.3 0.552 44.2 15.3 6.61 1.25%Sand-Slime Tailing 0.059 119.0 1.54 0.53 1.01 1 0.90 39.911 554.76 46.45 42 1.29% 2.3 47% 2.07 0.03 2.03 1 0.81 0.07 0.94 1.0 0.045 46.59 93.05 0.132 2.95 0.87 0.39 0.80 0.97 1.0 0.040 1.86 86.56 0.140 3.09 3.02 2 11.56 594 1.8E-03 6.5E+02 3.1E-04 10 0.243 6029 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.70% 0.0028
28.543 5587.31 44.6 0.539 44.5 16.5 7.16 1.21%Sand-Slime Tailing 0.059 119.0 1.55 0.53 1.01 1 0.90 40.085 557.18 46.66 43 1.25% 2.3 47% 2.08 0.04 2.04 1 0.81 0.07 0.94 1.0 0.045 46.67 93.33 0.132 2.95 0.86 0.39 0.80 0.97 1.0 0.040 1.84 85.72 0.139 3.04 3.00 2 11.61 594 1.8E-03 6.5E+02 3.1E-04 10 0.243 6023 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.72% 0.0028
28.707 5587.14 45.4 0.570 45.2 18.3 7.93 1.26%Sand-Slime Tailing 0.059 119.0 1.56 0.54 1.02 1 0.90 40.610 564.48 47.29 43 1.30% 2.3 47% 2.09 0.05 2.04 1 0.80 0.07 0.94 1.0 0.045 46.89 94.17 0.133 2.98 0.86 0.40 0.80 0.97 1.0 0.040 1.85 87.70 0.143 3.11 3.05 2 11.66 594 1.8E-03 6.5E+02 3.1E-04 10 0.244 6018 0.07% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.74% 0.0029
28.871 5586.98 47.7 0.530 47.6 19.4 8.39 1.11%Sand Tailings 0.062 123.5 1.57 0.54 1.02 1 0.90 42.658 592.95 49.67 45 1.15% 2.2 18% 2.10 0.05 2.05 1 0.80 0.07 0.94 1.0 0.045 34.79 84.46 0.119 2.66 0.86 0.41 0.80 0.97 1.0 0.040 1.72 85.44 0.138 2.99 2.83 2 11.71 594 1.9E-03 6.8E+02 3.0E-04 0 0.243 7606 0.08% 5.00 1.00 0.03% 0.003 0.34 0.079 0.765 0.41% 0.0007
29.035 5586.81 50.3 0.530 50.2 19.4 8.42 1.05%Sand Tailings 0.062 123.5 1.58 0.55 1.03 1 0.89 44.933 624.57 52.31 47 1.09% 2.2 18% 2.11 0.06 2.05 1 0.80 0.07 0.94 1.0 0.045 35.46 87.78 0.124 2.77 0.86 0.42 0.79 0.96 1.0 0.040 1.64 85.89 0.139 2.99 2.88 2 11.76 594 1.9E-03 6.8E+02 3.0E-04 0 0.243 7598 0.08% 5.00 1.00 0.03% 0.003 0.34 0.079 0.765 0.41% 0.0007
29.199 5586.65 52.6 0.530 52.4 18.7 8.10 1.01%Sand Tailings 0.062 123.5 1.59 0.55 1.03 1 0.89 46.851 651.23 54.54 49 1.04% 2.2 18% 2.12 0.06 2.06 1 0.80 0.07 0.94 1.0 0.045 36.03 90.57 0.128 2.87 0.86 0.43 0.79 0.96 1.0 0.041 1.58 86.40 0.140 3.00 2.93 2 11.81 594 1.9E-03 6.8E+02 3.1E-04 0 0.243 7591 0.09% 5.00 1.00 0.03% 0.003 0.34 0.079 0.765 0.42% 0.0007
32.260 5583.59 Sand Tailings 0.062 123.5 2.31 0.11 2.20 1 12.75 594 1.9E-03 6.8E+02 3.3E-04 0 0.247 7387 0.10%5.00 1.00 0.03% 0.004 0.34 0.079 0.765 0.56% 0.0172
Extra layer added to analyze seismic settlement of tailings below the bottom of CPT investigation.
Liquef_SeismicSettle_30Aug2015.xls Page 13 of 29
Energy Fuels Resources (USA) Inc.White Mesa Mill
Seismic Settlement Analyses
Data File: 13-52106_SP2W7-C-BSC-CPT 5613.10 Water surface elevation during CPT investigation (ft5619.60 Ground Surface Elevation at time of CPT (ft amsl)
Location: White Mesa 2013 CPT Investigation 0.15 5611.32 Water surface elevation at t0 (ft amsl)5626.65 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl)
..\..\..\6.2.3 Field Data\2013 Field Investigation\Conetec Dat 5.5 5595.40 Water surface elevation at t1 (ft amsl) 0.50 Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after pla ###### 5626.4 5626.15 0.50 0.055 110 0.028 0.014 0.00 0.00 0.028 0.014 0.08 508 1.7E-03 4.4E+02 3.0E-06 11 0.068 46696 0.00% 1.20 0.80 0.04% 0.000 0.32 0.133 0.778 0.00% 0.0000
Tailings Sands 1.69 5590.40 Water surface elevation at t2 (ft amsl)3.50 Thickness of Water Storage/Rooting Zone (ft)###### 5624.4 5622.65 3.50 0.054 107 0.215 0.121 0.00 0.00 0.215 0.121 0.69 508 1.7E-03 4.3E+02 2.8E-05 11 0.118 18930 0.00% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
Tailings Sand-Slimes 4.00 Thickness of High Compaction Layer (ft)###### 5620.65 5618.65 4.00 0.060 120 0.454 0.334 0.00 0.00 0.454 0.334 1.83 508 1.9E-03 4.8E+02 6.8E-05 11 0.153 12419 0.01% 0.65 0.75 0.02% 0.000 0.34 0.079 0.765 0.00% 0.0000
Tailings Slimes 1.44 -0.95 Thickness of Random/Platform Fill on on top of existing interim cover (ft) ###### 5619.13 5619.60 -0.95 0.050 101 0.406 0.430 0.00 0.00 0.406 0.430 2.29 508 1.6E-03 4.0E+02 1.0E-04 11 0.164 11187 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
Interim Cover 0.47 812.44 Additional Stress due to Final Cover Placement, ΔσFC (psf)
Cells Requiring User Input/Manipulation 2.21 2.21 7.51 5590.40 Elevation of bottom of tailings (liner) (ft amsl)
0.347
rd Cσ Kσ Ka rd Dr f Kσ Ka Avg
(ft) (ft amsl) TSF TSF TSF (ft) PSI (%) (tcf) (pcf) (tsf)(tsf)(tsf) 1=Yes TSF MPa % (tsf)(tsf)(tsf) 1=Yes FoS m
0=No 0=No (ft/sec) (tcf) tsf tsf (%)
0.164 5619.44 37.3 0.106 37.3 3.0 1.31 0.28%Interim Cover 0.050 100.7 0.01 0.00 0.01 0 1.70 63.359 880.69 73.63 4513 0.28% 0.7 51% 0.41 0.00 0.41 0 1.00 0.09 1.06 1.0 0.061 56.16 129.78 0.202 3.29 0.98 0.50 0.75 3.16 1.0 0.014 1.00 73.63 0.117 281.58 142.44 2 2.20 594 1.6E-03 5.5E+02 7.3E-05 11 0.162 11360 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
0.328 5619.27 49.3 0.150 49.3 3.1 1.34 0.30%Interim Cover 0.050 100.7 0.02 0.00 0.02 0 1.70 83.827 ###### 97.40 2985 0.30% 0.7 51% 0.42 0.00 0.42 0 1.00 0.10 1.07 1.0 0.062 64.50 161.90 0.339 5.46 0.98 0.57 0.72 3.08 1.0 0.014 1.00 97.40 0.166 199.54 102.50 2 2.25 594 1.6E-03 5.5E+02 7.5E-05 11 0.163 11268 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
0.492 5619.11 59.2 0.224 59.1 4.5 1.95 0.38%Interim Cover 0.050 100.7 0.02 0.00 0.02 0 1.70 100.521 ###### 116.80 2386 0.38% 0.8 51% 0.43 0.00 0.43 0 1.00 0.12 1.08 1.0 0.063 71.31 188.12 0.701 11.18 0.98 0.62 0.69 3.02 1.0 0.014 1.00 116.80 0.228 183.03 97.10 2 2.30 594 1.6E-03 5.5E+02 7.6E-05 11 0.164 11177 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
0.656 5618.94 63.9 0.317 63.8 2.3 0.98 0.50%Interim Cover 0.050 100.7 0.03 0.00 0.03 0 1.70 108.528 ###### 126.08 1931 0.50% 0.9 51% 0.44 0.00 0.44 0 1.00 0.13 1.09 1.0 0.063 74.56 200.64 1.000 15.90 0.98 0.65 0.68 2.88 1.0 0.015 1.00 126.08 0.266 160.29 88.10 2 2.35 594 1.6E-03 5.5E+02 7.8E-05 11 0.164 11090 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
0.820 5618.78 65.3 0.442 65.3 2.3 1.01 0.68%Interim Cover 0.050 100.7 0.04 0.00 0.04 0 1.70 110.925 ###### 128.86 1579 0.68% 1.1 51% 0.45 0.00 0.45 0 1.00 0.13 1.09 1.0 0.063 75.54 204.40 1.000 15.91 0.98 0.66 0.67 2.71 1.0 0.016 1.00 128.86 0.279 134.37 75.14 2 2.40 594 1.6E-03 5.5E+02 7.9E-05 11 0.165 11004 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
0.984 5618.62 74.0 0.500 74.0 6.1 2.66 0.68%Interim Cover 0.050 100.7 0.05 0.00 0.05 0 1.70 125.766 ###### 146.15 1492 0.68% 1.1 51% 0.46 0.00 0.46 0 1.00 0.15 1.10 1.0 0.063 81.61 227.75 1.000 15.75 0.98 0.70 0.65 2.71 1.0 0.016 1.00 146.15 0.370 148.67 82.21 2 2.45 594 1.6E-03 5.5E+02 8.1E-05 11 0.166 10921 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.148 5618.45 70.5 0.458 70.5 1.5 0.67 0.65%Interim Cover 0.050 100.7 0.06 0.00 0.06 0 1.70 119.799 ###### 139.16 1218 0.65% 1.1 51% 0.46 0.00 0.46 0 1.00 0.15 1.09 1.0 0.063 79.16 218.31 1.000 15.87 0.98 0.68 0.66 2.51 1.0 0.017 1.00 139.16 0.331 113.82 64.85 2 2.50 594 1.6E-03 5.5E+02 8.2E-05 11 0.167 10840 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.312 5618.29 76.0 0.403 76.0 0.8 0.34 0.53%Interim Cover 0.050 100.7 0.07 0.00 0.07 0 1.70 129.234 ###### 150.11 1149 0.53% 1.0 51% 0.47 0.00 0.47 0 1.00 0.16 1.10 1.0 0.063 83.00 233.11 1.000 15.78 0.98 0.71 0.65 2.48 1.0 0.017 1.00 150.11 0.395 118.90 67.34 2 2.55 594 1.6E-03 5.5E+02 8.3E-05 11 0.168 10761 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.476 5618.12 71.1 0.468 71.1 3.0 1.32 0.66%Interim Cover 0.050 100.7 0.07 0.00 0.07 0 1.70 120.887 ###### 140.44 956 0.66% 1.1 51% 0.48 0.00 0.48 0 1.00 0.15 1.09 1.0 0.063 79.61 220.05 1.000 15.93 0.98 0.68 0.66 2.31 1.0 0.019 1.00 140.44 0.338 90.47 53.20 2 2.60 594 1.6E-03 5.5E+02 8.5E-05 11 0.168 10683 0.01% 2.00 0.65 0.03%0.000 0.34 0.079 0.765 0.00% 0.0000
1.640 5617.96 69.3 0.535 69.3 1.0 0.42 0.77%Interim Cover 0.050 100.7 0.08 0.00 0.08 0 1.70 117.742 ###### 136.76 837 0.77% 1.2 51% 0.49 0.00 0.49 0 1.00 0.14 1.08 1.0 0.062 78.31 215.08 1.000 16.00 0.98 0.68 0.66 2.21 1.0 0.020 1.00 136.76 0.318 76.70 46.35 2 2.65 594 1.6E-03 5.5E+02 8.6E-05 11 0.169 10608 0.01% 2.00 0.65 0.03%0.000 0.34 0.079 0.765 0.00% 0.0000
1.804 5617.80 67.9 0.630 67.9 1.5 0.63 0.93%Interim Cover 0.050 100.7 0.09 0.00 0.09 0 1.70 115.362 ###### 134.00 746 0.93% 1.3 51% 0.50 0.00 0.50 0 1.00 0.14 1.08 1.0 0.062 77.35 211.35 1.000 16.07 0.98 0.67 0.67 2.12 1.0 0.020 1.00 134.00 0.304 66.66 41.36 2 2.70 594 1.6E-03 5.5E+02 8.8E-05 11 0.170 10535 0.01% 2.00 0.65 0.03%0.000 0.34 0.079 0.765 0.00% 0.0000
1.968 5617.63 62.3 0.676 62.3 2.1 0.91 1.08%Interim Cover 0.050 100.7 0.10 0.00 0.10 0 1.70 105.927 ###### 123.05 628 1.09% 1.4 51% 0.51 0.00 0.51 0 1.00 0.13 1.07 1.0 0.062 73.50 196.56 0.977 15.83 0.98 0.64 0.68 2.00 1.0 0.022 1.00 123.05 0.253 50.97 33.40 2 2.75 594 1.6E-03 5.5E+02 8.9E-05 11 0.170 10463 0.01% 2.00 0.65 0.03%0.000 0.34 0.079 0.765 0.00% 0.0000
2.133 5617.47 58.0 0.590 58.0 0.7 0.30 1.02%Interim Cover 0.050 100.7 0.11 0.00 0.11 0 1.70 98.566 ###### 114.49 539 1.02% 1.4 51% 0.51 0.00 0.51 0 1.00 0.12 1.06 1.0 0.061 70.50 184.98 0.628 10.25 0.98 0.62 0.69 1.90 1.0 0.023 1.00 114.49 0.220 40.80 25.53 2 2.80 594 1.6E-03 5.5E+02 9.1E-05 11 0.171 10392 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.297 5617.30 56.9 0.428 56.9 1.5 0.65 0.75%Interim Cover 0.050 100.7 0.12 0.00 0.12 0 1.70 96.730 ###### 112.36 491 0.75% 1.3 51% 0.52 0.00 0.52 0 1.00 0.12 1.06 1.0 0.061 69.75 182.12 0.572 9.37 0.98 0.61 0.69 1.85 1.0 0.023 1.00 112.36 0.212 36.58 22.98 2 2.85 594 1.6E-03 5.5E+02 9.2E-05 11 0.172 10324 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.461 5617.14 58.9 0.597 58.9 2.3 0.99 1.01%Interim Cover 0.050 100.7 0.12 0.00 0.12 0 1.70 100.062 ###### 116.24 474 1.02% 1.5 51% 0.53 0.00 0.53 0 1.00 0.12 1.06 1.0 0.061 71.11 187.36 0.682 11.18 0.98 0.62 0.69 1.83 1.0 0.024 1.00 116.24 0.226 36.44 23.81 2 2.90 594 1.6E-03 5.5E+02 9.4E-05 11 0.173 10257 0.01% 2.00 0.65 0.03%0.000 0.34 0.079 0.765 0.00% 0.0000
2.625 5616.98 67.5 0.562 67.5 1.5 0.63 0.83%Interim Cover 0.050 100.7 0.13 0.00 0.13 0 1.70 114.801 ###### 133.35 510 0.83% 1.4 51% 0.54 0.00 0.54 0 1.00 0.14 1.07 1.0 0.061 77.12 210.47 1.000 16.31 0.98 0.67 0.67 1.87 1.0 0.023 1.00 133.35 0.301 45.43 30.87 2 2.95 594 1.6E-03 5.5E+02 9.5E-05 11 0.173 10191 0.01% 2.00 0.65 0.03%0.000 0.34 0.079 0.765 0.00% 0.0000
2.789 5616.81 68.3 0.681 68.3 1.1 0.49 1.00%Interim Cover 0.050 100.7 0.14 0.00 0.14 0 1.70 116.076 ###### 134.83 485 1.00% 1.4 51% 0.55 0.00 0.55 0 0.99 0.14 1.06 1.0 0.061 77.64 212.47 1.000 16.34 0.98 0.67 0.66 1.84 1.0 0.023 1.00 134.83 0.308 43.82 30.08 2 3.00 594 1.6E-03 5.5E+02 9.7E-05 11 0.174 10127 0.01% 2.00 0.65 0.03%0.000 0.34 0.079 0.765 0.00% 0.0000
2.953 5616.65 72.4 0.913 72.4 0.1 0.04 1.26%Interim Cover 0.050 100.7 0.15 0.00 0.15 0 1.70 123.114 ###### 142.99 486 1.26% 1.5 51% 0.55 0.00 0.55 0 0.99 0.15 1.07 1.0 0.061 80.50 223.49 1.000 16.32 0.98 0.69 0.65 1.83 1.0 0.023 1.00 142.99 0.352 47.32 31.82 2 3.05 594 1.6E-03 5.5E+02 9.8E-05 11 0.175 10064 0.01% 2.00 0.65 0.03%0.000 0.34 0.079 0.765 0.00% 0.0000
3.117 5616.48 67.6 0.613 67.6 0.1 0.04 0.91%Interim Cover 0.050 100.7 0.16 0.00 0.16 0 1.70 114.869 ###### 133.41 429 0.91% 1.4 51% 0.56 0.00 0.56 0 0.99 0.14 1.06 1.0 0.061 77.14 210.55 1.000 16.45 0.98 0.67 0.67 1.76 1.0 0.024 1.00 133.41 0.301 38.34 27.39 2 3.10 495 1.6E-03 3.8E+02 1.4E-04 11 0.175 10002 0.02% 2.00 0.65 0.03%0.000 0.34 0.079 0.765 0.00% 0.0000
3.281 5616.32 81.3 2.130 81.3 -0.3 -0.12 2.62%Sand-Slime Tailing 0.047 93.3 0.16 0.00 0.16 0 1.70 138.261 ###### 160.58 493 2.62% 1.8 47% 0.57 0.00 0.57 0 0.99 0.18 1.07 1.0 0.062 86.62 247.20 1.000 16.26 0.98 0.73 0.63 1.83 1.0 0.023 1.12 179.35 1.000 121.56 68.91 2 3.15 495 1.4E-03 3.5E+02 1.6E-04 10 0.176 10210 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
3.445 5616.16 80.0 1.732 79.9 8.4 3.65 2.17%Sand-Slime Tailing 0.047 93.3 0.17 0.00 0.17 0 1.70 135.864 ###### 157.90 463 2.17% 1.8 47% 0.58 0.00 0.58 0 0.99 0.17 1.07 1.0 0.061 85.68 243.58 1.000 16.34 0.98 0.73 0.64 1.79 1.0 0.024 1.07 169.42 1.000 116.20 66.27 2 3.20 495 1.4E-03 3.5E+02 1.6E-04 10 0.177 10153 0.03% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
3.609 5615.99 65.9 1.776 65.8 3.9 1.68 2.70%Sand-Slime Tailing 0.047 93.3 0.18 0.00 0.18 0 1.70 111.911 ###### 130.03 365 2.70% 1.9 47% 0.59 0.00 0.59 0 0.99 0.14 1.05 1.0 0.060 75.90 205.93 1.000 16.60 0.98 0.66 0.67 1.67 1.0 0.026 1.18 152.78 0.412 45.82 31.21 2 3.25 495 1.4E-03 3.5E+02 1.6E-04 10 0.177 10098 0.03% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
3.773 5615.83 50.8 1.506 50.8 2.8 1.21 2.96%Sand-Slime Tailing 0.047 93.3 0.19 0.00 0.19 0 1.70 86.343 ###### 100.32 270 2.98% 2.0 47% 0.59 0.00 0.59 0 0.99 0.11 1.04 1.0 0.059 65.48 165.80 0.369 6.21 0.97 0.58 0.71 1.55 1.0 0.028 1.28 128.71 0.278 29.73 17.97 2 3.30 495 1.4E-03 3.5E+02 1.6E-04 10 0.178 10044 0.03% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
3.937 5615.66 56.3 1.282 56.3 3.5 1.52 2.28%Sand-Slime Tailing 0.047 93.3 0.20 0.00 0.20 0 1.70 95.642 ###### 111.13 287 2.29% 1.9 47% 0.60 0.00 0.60 0 0.99 0.12 1.04 1.0 0.060 69.27 180.40 0.542 9.11 0.97 0.61 0.70 1.57 1.0 0.027 1.17 129.62 0.283 29.01 19.06 2 3.35 495 1.4E-03 3.5E+02 1.7E-04 10 0.179 9991 0.03% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
4.101 5615.50 62.9 1.087 62.9 1.5 0.65 1.73%Sand-Slime Tailing 0.047 93.3 0.20 0.00 0.20 0 1.70 106.913 ###### 124.19 309 1.73% 1.8 47% 0.61 0.00 0.61 0 0.99 0.13 1.04 1.0 0.060 73.86 198.05 1.000 16.77 0.97 0.64 0.68 1.59 1.0 0.027 1.08 133.72 0.302 29.89 23.33 2 3.40 495 1.4E-03 3.5E+02 1.7E-04 10 0.179 9939 0.03% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
4.265 5615.33 59.1 1.275 59.1 0.2 0.10 2.16%Sand-Slime Tailing 0.047 93.3 0.21 0.00 0.21 0 1.70 100.402 ###### 116.61 280 2.17% 1.9 47% 0.62 0.00 0.62 0 0.99 0.12 1.04 1.0 0.059 71.20 187.81 0.693 11.68 0.97 0.62 0.69 1.55 1.0 0.028 1.16 134.72 0.307 29.29 20.48 2 3.45 495 1.4E-03 3.5E+02 1.7E-04 10 0.180 9887 0.03% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
4.429 5615.17 53.9 1.413 53.9 6.9 3.00 2.62%Sand-Slime Tailing 0.047 93.3 0.22 0.00 0.22 0 1.70 91.630 ###### 106.51 246 2.63% 2.0 47% 0.62 0.00 0.62 0 0.99 0.11 1.04 1.0 0.059 67.66 174.16 0.453 7.68 0.97 0.60 0.70 1.51 1.0 0.029 1.25 133.61 0.302 27.76 17.72 2 3.50 495 1.4E-03 3.5E+02 1.7E-04 10 0.180 9837 0.03% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
4.593 5615.01 52.0 1.603 52.0 1.0 0.44 3.08%Sand-Slime Tailing 0.047 93.3 0.23 0.00 0.23 0 1.70 88.468 ###### 102.76 229 3.09% 2.0 47% 0.63 0.00 0.63 0 0.98 0.11 1.03 1.0 0.059 66.34 169.10 0.399 6.77 0.97 0.59 0.71 1.48 1.0 0.029 1.35 139.13 0.330 29.37 18.07 2 3.55 495 1.4E-03 3.5E+02 1.7E-04 10 0.181 9787 0.03% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
4.757 5614.84 50.3 1.706 50.2 1.6 0.71 3.40%Sand-Slime Tailing 0.047 93.3 0.23 0.00 0.23 0 1.70 85.408 ###### 99.22 214 3.41% 2.1 47% 0.64 0.00 0.64 0 0.98 0.11 1.03 1.0 0.059 65.10 164.31 0.357 6.09 0.97 0.58 0.71 1.46 1.0 0.029 1.44 142.65 0.350 30.10 18.09 2 3.60 495 1.4E-03 3.5E+02 1.8E-04 10 0.181 9739 0.03% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
4.921 5614.68 56.7 1.658 56.7 1.0 0.41 2.93%Sand-Slime Tailing 0.047 93.3 0.24 0.00 0.24 0 1.70 96.339 ###### 111.90 234 2.94% 2.0 47% 0.65 0.00 0.65 0 0.98 0.12 1.03 1.0 0.059 69.55 181.45 0.560 9.54 0.97 0.61 0.69 1.48 1.0 0.029 1.32 147.75 0.380 31.66 20.60 2 3.65 495 1.4E-03 3.5E+02 1.8E-04 10 0.182 9691 0.03% 2.00 0.65 0.03% 0.001 0.34 0.079 0.765 0.09% 0.0002
5.085 5614.51 41.7 0.963 41.7 2.7 1.19 2.31%Sand-Slime Tailing 0.047 93.3 0.25 0.00 0.25 0 1.70 70.856 984.90 82.33 167 2.32% 2.0 47% 0.65 0.00 0.65 0 0.98 0.09 1.03 1.0 0.058 59.18 141.50 0.238 4.08 0.97 0.52 0.74 1.38 1.0 0.031 1.32 109.07 0.201 16.21 10.15 2 3.70 495 1.4E-03 3.5E+02 1.8E-04 10 0.183 9644 0.03% 2.00 0.65 0.03% 0.001 0.34 0.079 0.765 0.17% 0.0003
5.249 5614.35 52.5 1.083 52.5 3.5 1.53 2.06%Sand-Slime Tailing 0.047 93.3 0.26 0.00 0.26 0 1.70 89.199 ###### 103.64 204 2.07% 1.9 47% 0.66 0.00 0.66 0 0.98 0.11 1.03 1.0 0.058 66.65 170.29 0.410 7.03 0.97 0.59 0.71 1.43 1.0 0.030 1.21 125.85 0.265 20.81 13.92 2 3.75 495 1.4E-03 3.5E+02 1.8E-04 10 0.183 9597 0.03% 2.00 0.65 0.03% 0.001 0.34 0.079 0.765 0.23% 0.0004
5.413 5614.19 21.3 0.563 21.3 1.4 0.60 2.64%Sand-Slime Tailing 0.047 93.3 0.26 0.00 0.26 0 1.70 36.210 503.32 42.07 80 2.68% 2.3 47% 0.67 0.00 0.67 0 0.98 0.07 1.02 1.0 0.058 45.06 87.13 0.123 2.13 0.97 0.37 0.80 1.27 1.0 0.034 1.87 78.68 0.125 9.54 5.84 2 3.80 495 1.4E-03 3.5E+02 1.8E-04 10 0.184 9552 0.03% 2.00 0.65 0.03% 0.002 0.34 0.079 0.765 0.28% 0.0005
5.577 5614.02 22.2 0.545 22.2 0.6 0.28 2.46%Sand-Slime Tailing 0.047 93.3 0.27 0.00 0.27 0 1.70 37.706 524.11 43.80 81 2.49% 2.2 47% 0.68 0.00 0.68 0 0.98 0.07 1.02 1.0 0.058 45.66 89.46 0.126 2.19 0.97 0.38 0.80 1.26 1.0 0.034 1.79 78.56 0.125 9.26 5.73 2 3.85 495 1.4E-03 3.5E+02 1.9E-04 10 0.184 9507 0.03% 2.00 0.65 0.03% 0.002 0.34 0.079 0.765 0.33% 0.0005
5.741 5613.86 18.0 0.373 18.0 0.3 0.13 2.07%Sand-Slime Tailing 0.047 93.3 0.28 0.00 0.28 0 1.70 30.668 426.29 35.62 64 2.10% 2.3 47% 0.69 0.00 0.69 0 0.98 0.06 1.01 1.0 0.057 42.80 78.42 0.110 1.93 0.97 0.34 0.80 1.25 1.0 0.034 1.86 66.20 0.107 7.71 4.82 2 3.90 495 1.4E-03 3.5E+02 1.9E-04 10 0.185 9463 0.03% 2.00 0.65 0.03% 0.002 0.34 0.079 0.765 0.38% 0.0006
5.905 5613.69 7.7 0.333 7.7 3.8 1.64 4.34%Slime Tailings 0.041 82.7 0.29 0.00 0.29 0 1.70 13.005 180.77 15.15 26 4.51% 2.8 71% 0.69 0.00 0.69 0 0.98 0.05 1.01 1.0 0.057 35.36 50.52 0.078 1.37 0.97 0.22 0.80 1.25 1.0 0.034 4.65 70.38 0.112 7.91 4.64 2 3.95 495 1.3E-03 3.1E+02 2.1E-04 16 0.438 7751 0.05% 2.00 0.65 0.03% 0.008 0.34 0.079 0.765 1.18% 0.0019
6.069 5613.53 10.4 0.134 10.3 9.4 4.09 1.29%Sand-Slime Tailing 0.047 93.3 0.29 0.00 0.29 0 1.70 17.544 243.86 20.49 34 1.33% 2.4 47% 0.70 0.00 0.70 0 0.98 0.05 1.01 1.0 0.057 37.49 57.98 0.086 1.50 0.97 0.26 0.80 1.24 1.0 0.034 2.14 43.82 0.087 5.93 3.72 2 4.00 495 1.4E-03 3.5E+02 1.9E-04 10 0.186 9382 0.03% 2.00 0.65 0.03% 0.003 0.34 0.079 0.765 0.46% 0.0008
6.234 5613.37 11.4 0.206 11.4 8.9 3.87 1.80%Sand-Slime Tailing 0.047 93.3 0.30 0.00 0.30 0 1.70 19.363 269.15 22.60 37 1.85% 2.4 47% 0.71 0.00 0.71 0 0.98 0.05 1.01 1.0 0.057 38.23 60.83 0.089 1.56 0.97 0.27 0.80 1.23 1.0 0.035 2.37 53.60 0.094 6.31 3.93 2 4.05 495 1.4E-03 3.5E+02 1.9E-04 10 0.186 9339 0.04% 2.00 0.65 0.03% 0.003 0.34 0.079 0.765 0.50% 0.0008
6.398 5613.20 13.7 0.185 13.7 7.0 3.03 1.35%Sand-Slime Tailing 0.047 93.3 0.31 0.00 0.31 0 1.70 23.239 323.02 27.08 43 1.38% 2.3 47% 0.72 0.00 0.72 0 0.97 0.06 1.01 1.0 0.057 39.80 66.87 0.096 1.68 0.97 0.30 0.80 1.23 1.0 0.035 1.89 51.26 0.093 6.03 3.86 2 4.10 495 1.4E-03 3.5E+02 2.0E-04 10 0.187 9298 0.04% 2.00 0.65 0.03% 0.004 0.34 0.079 0.765 0.54% 0.0009
6.562 5613.04 12.1 0.174 12.0 6.7 2.91 1.44%Sand-Slime Tailing 0.059 119.0 0.32 0.00 0.32 1 1.70 20.417 283.80 23.80 37 1.48% 2.4 47% 0.73 0.00 0.73 0 0.97 0.05 1.01 1.0 0.057 38.65 62.44 0.091 1.60 0.97 0.28 0.80 1.22 1.0 0.035 2.14 50.97 0.092 5.87 3.73 2 4.15 495 1.8E-03 4.5E+02 1.6E-04 10 0.187 9246 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
6.726 5612.87 13.0 0.171 13.0 6.5 2.83 1.32%Sand-Slime Tailing 0.059 119.0 0.33 0.01 0.32 1 1.70 22.032 306.24 25.67 39 1.35% 2.3 47% 0.73 0.00 0.73 0 0.97 0.06 1.01 1.0 0.057 39.30 64.97 0.094 1.65 0.97 0.29 0.80 1.22 1.0 0.035 1.98 50.86 0.092 5.79 3.72 2 4.20 495 1.8E-03 4.5E+02 1.6E-04 10 0.188 9195 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
6.890 5612.71 12.7 0.139 12.6 5.2 2.27 1.10%Sand-Slime Tailing 0.059 119.0 0.34 0.01 0.33 1 1.70 21.488 298.68 25.02 38 1.13% 2.3 47% 0.74 0.00 0.74 0 0.97 0.06 1.01 1.0 0.057 39.08 64.10 0.093 1.63 0.97 0.29 0.80 1.21 1.0 0.035 1.89 47.20 0.089 5.53 3.58 2 4.25 495 1.8E-03 4.5E+02 1.6E-04 10 0.189 9144 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
7.054 5612.55 17.0 0.146 16.9 6.6 2.86 0.86%Sand-Slime Tailing 0.059 119.0 0.35 0.02 0.33 1 1.70 28.747 399.58 33.47 50 0.88% 2.1 47% 0.75 0.00 0.75 0 0.97 0.06 1.01 1.0 0.057 42.04 75.51 0.107 1.89 0.97 0.33 0.80 1.21 1.0 0.035 1.49 49.82 0.091 5.58 3.74 2 4.30 495 1.8E-03 4.5E+02 1.6E-04 10 0.189 9095 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
7.218 5612.38 20.2 0.150 20.2 3.0 1.29 0.74%Sand-Slime Tailing 0.059 119.0 0.36 0.02 0.34 1 1.70 34.272 476.38 39.84 59 0.76% 2.0 47% 0.76 0.00 0.76 0 0.97 0.06 1.01 1.0 0.056 44.27 84.12 0.118 2.10 0.97 0.36 0.80 1.21 1.0 0.035 1.33 53.04 0.094 5.65 3.87 2 4.35 495 1.8E-03 4.5E+02 1.6E-04 10 0.190 9047 0.03% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
7.382 5612.22 19.8 0.235 19.8 2.2 0.97 1.18%Sand-Slime Tailing 0.059 119.0 0.37 0.03 0.34 1 1.70 33.711 468.58 39.18 57 1.21% 2.2 47% 0.77 0.00 0.77 0 0.97 0.06 1.01 1.0 0.056 44.04 83.22 0.117 2.08 0.97 0.36 0.80 1.20 1.0 0.035 1.55 60.90 0.101 6.00 4.04 2 4.40 495 1.8E-03 4.5E+02 1.7E-04 10 0.190 8999 0.03% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
7.546 5612.05 17.7 0.285 17.7 2.4 1.03 1.61%Sand-Slime Tailing 0.059 119.0 0.38 0.03 0.34 1 1.70 30.022 417.31 34.90 50 1.65% 2.3 47% 0.78 0.00 0.78 0 0.97 0.06 1.01 1.0 0.056 42.54 77.44 0.109 1.94 0.97 0.34 0.80 1.20 1.0 0.035 1.88 65.77 0.106 6.24 4.09 2 4.45 495 1.8E-03 4.5E+02 1.7E-04 10 0.191 8953 0.03% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
7.710 5611.89 13.4 0.165 13.3 4.3 1.85 1.24%Sand-Slime Tailing 0.059 119.0 0.39 0.04 0.35 1 1.70 22.661 314.99 26.37 37 1.27% 2.3 47% 0.79 0.00 0.79 0 0.97 0.06 1.00 1.0 0.056 39.55 65.92 0.095 1.69 0.97 0.30 0.80 1.20 1.0 0.036 2.00 52.82 0.094 5.42 3.56 2 4.50 495 1.8E-03 4.5E+02 1.7E-04 10 0.192 8907 0.03% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
7.874 5611.73 9.6 0.188 9.6 6.8 2.93 1.96%Slime Tailings 0.057 113.1 0.40 0.04 0.35 1 1.70 16.269 226.14 18.98 26 2.04% 2.6 71% 0.80 0.00 0.80 0 0.96 0.05 1.00 1.0 0.056 36.70 55.68 0.083 1.49 0.97 0.25 0.80 1.19 1.0 0.036 3.10 58.76 0.099 5.66 3.57 2 4.55 495 1.8E-03 4.3E+02 1.8E-04 16 0.444 7292 0.03% 2.00 0.65 0.03% 0.003 0.34 0.079 0.765 0.40% 0.0007
8.038 5611.56 13.1 0.151 13.1 10.1 4.39 1.15%Sand-Slime Tailing 0.059 119.0 0.41 0.05 0.36 1 1.70 22.219 308.84 25.93 36 1.19% 2.3 47% 0.81 0.00 0.81 0 0.96 0.06 1.00 1.0 0.056 39.40 65.33 0.094 1.68 0.96 0.29 0.80 1.19 1.0 0.036 2.00 51.81 0.093 5.25 3.47 2 4.60 495 1.8E-03 4.5E+02 1.7E-04 10 0.193 8820 0.03% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
8.202 5611.40 15.0 0.146 15.0 9.8 4.25 0.97%Sand-Slime Tailing 0.059 119.0 0.42 0.05 0.36 1 1.70 25.449 353.74 29.68 40 1.00% 2.2 47% 0.82 0.00 0.82 0 0.96 0.06 1.00 1.0 0.056 40.71 70.39 0.100 1.79 0.96 0.31 0.80 1.19 1.0 0.036 1.74 51.61 0.093 5.18 3.49 2 4.65 495 1.8E-03 4.5E+02 1.8E-04 10 0.193 8776 0.03% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
8.366 5611.23 23.6 0.220 23.6 9.0 3.91 0.93%Sand-Slime Tailing 0.059 119.0 0.43 0.06 0.37 1 1.70 40.086 557.20 46.67 63 0.95% 2.1 47% 0.83 0.00 0.83 0 0.96 0.07 1.00 1.0 0.056 46.67 93.34 0.132 2.37 0.96 0.39 0.80 1.19 1.0 0.036 1.38 64.29 0.105 5.77 4.07 2 4.70 495 1.8E-03 4.5E+02 1.8E-04 10 0.194 8733 0.03% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
8.530 5611.07 19.7 0.264 19.7 4.3 1.88 1.34%Sand-Slime Tailing 0.059 119.0 0.44 0.06 0.37 1 1.70 33.473 465.27 38.93 52 1.37% 2.2 47% 0.84 0.00 0.84 0 0.96 0.06 1.00 1.0 0.056 43.95 82.89 0.117 2.10 0.96 0.36 0.80 1.18 1.0 0.036 1.71 66.71 0.108 5.86 3.98 2 4.75 495 1.8E-03 4.5E+02 1.8E-04 10 0.195 8691 0.03% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
8.694 5610.91 18.6 0.186 18.5 5.3 2.28 1.00%Sand-Slime Tailing 0.059 119.0 0.45 0.07 0.38 1 1.70 31.518 438.10 36.67 48 1.03% 2.2 47% 0.85 0.00 0.85 0 0.96 0.06 1.00 1.0 0.056 43.16 79.83 0.112 2.02 0.96 0.35 0.80 1.18 1.0 0.036 1.60 58.60 0.099 5.31 3.67 2 4.80 495 1.8E-03 4.5E+02 1.8E-04 10 0.195 8650 0.03% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
8.858 5610.74 20.2 0.179 20.2 4.2 1.83 0.88%Sand-Slime Tailing 0.059 119.0 0.46 0.07 0.38 1 1.70 34.340 477.33 39.94 52 0.91% 2.1 47% 0.86 0.00 0.86 0 0.96 0.06 1.00 1.0 0.055 44.31 84.24 0.119 2.14 0.96 0.36 0.80 1.18 1.0 0.036 1.48 59.08 0.099 5.27 3.71 2 4.85 495 1.8E-03 4.5E+02 1.9E-04 10 0.196 8609 0.03% 2.00 0.65 0.03% 0.001 0.34 0.079 0.765 0.11% 0.0002
9.022 5610.58 17.5 0.248 17.5 1.3 0.56 1.42%Sand-Slime Tailing 0.059 119.0 0.46 0.08 0.39 1 1.70 29.750 413.53 34.57 44 1.46% 2.3 47% 0.87 0.00 0.87 0 0.96 0.06 1.00 1.0 0.055 42.43 76.99 0.109 1.96 0.96 0.34 0.80 1.17 1.0 0.036 1.92 66.25 0.107 5.63 3.79 2 4.90 495 1.8E-03 4.5E+02 1.9E-04 10 0.196 8569 0.03% 2.00 0.65 0.03% 0.001 0.34 0.079 0.765 0.18% 0.0003
9.186 5610.41 11.5 0.137 11.5 1.4 0.62 1.19%Sand-Slime Tailing 0.059 119.0 0.47 0.08 0.39 1 1.70 19.584 272.22 22.76 28 1.24% 2.4 47% 0.88 0.00 0.88 0 0.96 0.05 1.00 1.0 0.055 38.29 61.05 0.089 1.61 0.96 0.28 0.80 1.17 1.0 0.036 2.34 53.38 0.094 4.89 3.25 2 4.95 495 1.8E-03 4.5E+02 1.9E-04 10 0.197 8529 0.03% 2.00 0.65 0.03% 0.002 0.34 0.079 0.765 0.23% 0.0004
9.350 5610.25 8.4 0.124 8.3 6.1 2.63 1.48%Sand-Slime Tailing 0.059 119.0 0.48 0.09 0.40 1 1.70 14.178 197.07 16.54 20 1.57% 2.6 47% 0.89 0.00 0.89 0 0.96 0.05 1.00 1.0 0.055 36.10 52.64 0.080 1.45 0.96 0.23 0.80 1.17 1.0 0.036 3.27 54.12 0.095 4.87 3.16 2 5.00 460 1.8E-03 3.9E+02 2.2E-04 10 0.197 8491 0.04% 2.00 0.65 0.03% 0.006 0.34 0.079 0.765 0.90% 0.0015
9.514 5610.09 6.6 0.048 6.4 25.6 11.08 0.73%Slime Tailings 0.057 113.1 0.49 0.09 0.40 1 1.70 10.897 151.47 12.97 15 0.79% 2.5 71% 0.90 0.00 0.90 0 0.95 0.05 1.00 1.0 0.055 34.60 47.58 0.075 1.37 0.96 0.21 0.80 1.17 1.0 0.036 3.01 39.09 0.083 4.20 2.78 2 5.05 460 1.8E-03 3.7E+02 2.4E-04 16 0.450 6956 0.05% 2.00 0.65 0.03% 0.009 0.34 0.079 0.765 1.36% 0.0022
9.678 5609.92 7.3 0.052 7.1 34.6 14.98 0.72%Sand-Slime Tailing 0.059 119.0 0.50 0.10 0.40 1 1.70 11.985 166.59 14.35 17 0.77% 2.5 47% 0.91 0.00 0.91 0 0.95 0.05 1.00 1.0 0.055 35.33 49.68 0.077 1.40 0.96 0.22 0.80 1.16 1.0 0.036 2.79 40.00 0.083 4.19 2.80 2 5.10 460 1.8E-03 3.9E+02 2.3E-04 10 0.198 8416 0.04% 2.00 0.65 0.03% 0.006 0.34 0.079 0.765 0.97% 0.0016
9.842 5609.76 7.7 0.118 7.4 48.9 21.19 1.54%Slime Tailings 0.057 113.1 0.51 0.10 0.41 1 1.70 12.529 174.15 15.15 18 1.65% 2.6 71% 0.92 0.00 0.92 0 0.95 0.05 1.00 1.0 0.055 35.36 50.52 0.078 1.42 0.96 0.22 0.80 1.16 1.0 0.036 3.64 55.20 0.096 4.76 3.09 2 5.15 460 1.8E-03 3.7E+02 2.4E-04 16 0.451 6897 0.06% 2.00 0.65 0.03% 0.009 0.34 0.079 0.765 1.43% 0.0024
10.006 5609.59 9.2 0.064 8.8 56.4 24.42 0.70%Sand-Slime Tailing 0.059 119.0 0.52 0.11 0.41 1 1.70 15.028 208.89 18.15 21 0.74% 2.4 47% 0.93 0.00 0.93 0 0.95 0.05 1.00 1.0 0.055 36.67 54.82 0.082 1.50 0.96 0.25 0.80 1.16 1.0 0.037 2.34 42.55 0.085 4.21 2.86 2 5.20 460 1.8E-03 3.9E+02 2.3E-04 10 0.199 8344 0.05% 2.00 0.65 0.03% 0.007 0.34 0.079 0.765 1.04% 0.0017
10.170 5609.43 12.6 0.064 12.5 12.0 5.22 0.51%Sand-Slime Tailing 0.059 119.0 0.53 0.11 0.42 1 1.70 21.318 296.32 24.91 29 0.53% 2.2 47% 0.94 0.00 0.94 0 0.95 0.06 1.00 1.0 0.055 39.04 63.95 0.092 1.69 0.96 0.29 0.80 1.16 1.0 0.037 1.72 42.73 0.086 4.17 2.93 2 5.25 460 1.8E-03 3.9E+02 2.3E-04 10 0.200 8308 0.05% 2.00 0.65 0.03% 0.007 0.34 0.079 0.765 1.08% 0.0018
10.335 5609.27 10.7 0.069 10.6 15.8 6.85 0.65%Sand-Slime Tailing 0.059 119.0 0.54 0.12 0.42 1 1.70 17.969 249.77 21.06 24 0.68% 2.3 47% 0.95 0.00 0.95 0 0.95 0.05 0.99 1.0 0.055 37.69 58.75 0.086 1.59 0.96 0.26 0.80 1.15 1.0 0.037 2.09 43.93 0.087 4.17 2.88 2 5.30 460 1.8E-03 3.9E+02 2.4E-04 10 0.201 8273 0.05% 2.00 0.65 0.03% 0.007 0.34 0.079 0.765 1.11% 0.0018
10.499 5609.10 9.8 0.093 9.6 39.8 17.26 0.95%Sand-Slime Tailing 0.059 119.0 0.55 0.12 0.43 1 1.70 16.235 225.67 19.35 22 1.01% 2.5 47% 0.96 0.00 0.96 0 0.95 0.05 0.99 1.0 0.054 37.09 56.43 0.084 1.54 0.96 0.25 0.80 1.15 1.0 0.037 2.57 49.77 0.091 4.36 2.95 2 5.35 460 1.8E-03 3.9E+02 2.4E-04 10 0.201 8238 0.05% 2.00 0.65 0.03% 0.007 0.34 0.079 0.765 1.15% 0.0019
10.663 5608.94 10.0 0.042 9.7 47.3 20.49 0.42%Sand-Slime Tailing 0.059 119.0 0.56 0.13 0.43 1 1.70 16.558 230.16 19.81 22 0.44% 2.3 47% 0.97 0.00 0.97 0 0.95 0.05 0.99 1.0 0.054 37.25 57.06 0.085 1.56 0.96 0.26 0.80 1.15 1.0 0.037 1.94 38.50 0.082 3.87 2.72 2 5.40 460 1.8E-03 3.9E+02 2.4E-04 10 0.202 8203 0.05% 2.00 0.65 0.03% 0.008 0.34 0.079 0.765 1.18% 0.0019
10.827 5608.77 11.7 0.072 11.4 46.6 20.18 0.62%Sand-Slime Tailing 0.059 119.0 0.57 0.13 0.44 1 1.69 19.231 267.31 22.91 25 0.65% 2.3 47% 0.98 0.00 0.98 0 0.95 0.05 0.99 1.0 0.054 38.33 61.24 0.089 1.64 0.96 0.28 0.80 1.15 1.0 0.037 1.97 45.15 0.088 4.09 2.87 2 5.45 460 1.8E-03 3.9E+02 2.4E-04 10 0.202 8169 0.05% 2.00 0.65 0.03% 0.008 0.34 0.079 0.765 1.22% 0.0020
10.991 5608.61 10.9 0.095 10.4 75.1 32.54 0.87%Sand-Slime Tailing 0.059 119.0 0.58 0.14 0.44 1 1.69 17.592 244.52 21.35 23 0.92% 2.4 47% 0.99 0.00 0.99 0 0.94 0.05 0.99 1.0 0.054 37.79 59.14 0.087 1.60 0.96 0.27 0.80 1.14 1.0 0.037 2.36 50.32 0.092 4.25 2.93 2 5.50 460 1.8E-03 3.9E+02 2.5E-04 10 0.203 8136 0.05% 2.00 0.65 0.03% 0.008 0.34 0.079 0.765 1.25% 0.0021
11.155 5608.45 12.8 0.156 12.4 77.1 33.42 1.22%Sand-Slime Tailing 0.059 119.0 0.59 0.15 0.45 1 1.65 20.356 282.95 24.56 27 1.27% 2.4 47% 1.00 0.00 1.00 0 0.94 0.06 0.99 1.0 0.054 38.92 63.48 0.092 1.70 0.96 0.29 0.80 1.14 1.0 0.037 2.42 59.39 0.099 4.55 3.13 2 5.55 460 1.8E-03 3.9E+02 2.5E-04 10 0.203 8102 0.05% 2.00 0.65 0.03% 0.008 0.34 0.079 0.765 1.29% 0.0021
11.319 5608.28 18.2 0.117 17.6 85.5 37.06 0.64%Sand-Slime Tailing 0.059 119.0 0.60 0.15 0.45 1 1.58 27.942 388.40 33.44 39 0.67% 2.1 47% 1.01 0.00 1.01 0 0.94 0.06 0.99 1.0 0.054 42.03 75.46 0.107 1.98 0.96 0.33 0.80 1.14 1.0 0.037 1.55 51.83 0.093 4.21 3.09 2 5.60 460 1.8E-03 3.9E+02 2.5E-04 10 0.204 8070 0.05% 2.00 0.65 0.03% 0.009 0.34 0.079 0.765 1.32% 0.0022
11.483 5608.12 21.9 0.123 21.8 24.8 10.73 0.56%Sand-Slime Tailing 0.059 119.0 0.61 0.16 0.45 1 1.55 33.650 467.74 39.36 47 0.58% 2.0 47% 1.02 0.00 1.02 0 0.94 0.06 0.99 1.0 0.054 44.11 83.47 0.117 2.18 0.96 0.36 0.80 1.14 1.0 0.037 1.37 53.90 0.095 4.24 3.21 2 5.65 460 1.8E-03 3.9E+02 2.5E-04 10 0.204 8038 0.05% 2.00 0.65 0.03% 0.009 0.34 0.079 0.765 1.36% 0.0022
11.647 5607.95 18.8 0.102 18.7 18.8 8.14 0.54%Sand-Slime Tailing 0.059 119.0 0.62 0.16 0.46 1 1.56 29.097 404.45 34.01 40 0.56% 2.1 47% 1.03 0.00 1.03 0 0.94 0.06 0.99 1.0 0.054 42.23 76.24 0.108 2.00 0.96 0.34 0.80 1.13 1.0 0.037 1.47 50.02 0.092 4.07 3.04 2 5.70 460 1.8E-03 3.9E+02 2.6E-04 10 0.205 8006 0.05% 2.00 0.65 0.03% 0.009 0.34 0.079 0.765 1.39% 0.0023
11.811 5607.79 17.1 0.083 17.0 30.1 13.06 0.48%Sand-Slime Tailing 0.059 119.0 0.63 0.17 0.46 1 1.56 26.471 367.95 31.09 36 0.50% 2.1 47% 1.04 0.00 1.04 0 0.94 0.06 0.99 1.0 0.054 41.20 72.29 0.102 1.91 0.96 0.32 0.80 1.13 1.0 0.037 1.51 46.90 0.089 3.92 2.92 2 5.75 460 1.8E-03 3.9E+02 2.6E-04 10 0.205 7974 0.06% 2.00 0.65 0.03% 0.009 0.34 0.079 0.765 1.43% 0.0023
11.975 5607.63 15.6 0.099 15.4 45.3 19.65 0.63%Sand-Slime Tailing 0.059 119.0 0.64 0.17 0.47 1 1.56 24.026 333.97 28.42 32 0.66% 2.2 47% 1.05 0.00 1.05 0 0.94 0.06 0.99 1.0 0.054 40.27 68.69 0.098 1.83 0.96 0.31 0.80 1.13 1.0 0.037 1.72 49.00 0.091 3.96 2.89 2 5.80 460 1.8E-03 3.9E+02 2.6E-04 10 0.206 7943 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.46% 0.0024
12.139 5607.46 12.7 0.171 12.4 58.5 25.36 1.34%Sand-Slime Tailing 0.059 119.0 0.65 0.18 0.47 1 1.58 19.546 271.68 23.37 26 1.42% 2.5 47% 1.06 0.00 1.06 0 0.94 0.05 0.99 1.0 0.054 38.50 61.87 0.090 1.68 0.96 0.28 0.80 1.13 1.0 0.037 2.66 62.07 0.102 4.42 3.05 2 5.85 460 1.8E-03 3.9E+02 2.6E-04 10 0.206 7913 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.50% 0.0025
12.303 5607.30 13.0 0.141 12.6 69.8 30.26 1.09%Sand-Slime Tailing 0.059 119.0 0.66 0.18 0.48 1 1.57 19.678 273.52 23.65 26 1.14% 2.4 47% 1.07 0.00 1.07 0 0.94 0.05 0.99 1.0 0.053 38.60 62.24 0.090 1.69 0.95 0.28 0.80 1.12 1.0 0.037 2.41 56.98 0.097 4.16 2.93 2 5.90 460 1.8E-03 3.9E+02 2.7E-04 10 0.207 7883 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.53% 0.0025
12.467 5607.13 17.3 0.074 17.2 11.4 4.93 0.43%Sand-Slime Tailing 0.059 119.0 0.67 0.19 0.48 1 1.52 26.200 364.19 30.56 34 0.44% 2.1 47% 1.07 0.00 1.07 0 0.93 0.06 0.99 1.0 0.053 41.02 71.57 0.102 1.91 0.95 0.32 0.80 1.12 1.0 0.037 1.49 45.52 0.088 3.73 2.82 2 5.95 460 1.8E-03 3.9E+02 2.7E-04 10 0.207 7853 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.57% 0.0026
12.631 5606.97 14.6 0.118 14.6 12.4 5.38 0.81%Sand-Slime Tailing 0.059 119.0 0.68 0.19 0.49 1 1.53 22.293 309.87 26.03 29 0.85% 2.3 47% 1.08 0.00 1.08 0 0.93 0.06 0.99 1.0 0.053 39.43 65.46 0.094 1.77 0.95 0.29 0.80 1.12 1.0 0.038 2.00 52.19 0.093 3.92 2.84 2 6.00 460 1.8E-03 3.9E+02 2.7E-04 10 0.207 7824 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.60% 0.0026
12.795 5606.80 14.9 0.109 14.7 29.3 12.70 0.73%Sand-Slime Tailing 0.059 119.0 0.69 0.20 0.49 1 1.52 22.317 310.21 26.24 29 0.77% 2.3 47% 1.09 0.00 1.09 0 0.93 0.06 0.99 1.0 0.053 39.51 65.75 0.094 1.78 0.95 0.30 0.80 1.12 1.0 0.038 1.93 50.67 0.092 3.83 2.81 2 6.05 460 1.8E-03 3.9E+02 2.7E-04 10 0.208 7795 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.64% 0.0027
12.959 5606.64 17.4 0.213 17.4 6.0 2.59 1.23%Sand-Slime Tailing 0.059 119.0 0.70 0.20 0.50 1 1.49 25.878 359.71 30.12 34 1.28% 2.4 47% 1.10 0.00 1.10 0 0.93 0.06 0.99 1.0 0.053 40.87 70.99 0.101 1.90 0.95 0.32 0.80 1.12 1.0 0.038 2.13 64.14 0.105 4.31 3.11 2 6.10 460 1.8E-03 3.9E+02 2.8E-04 10 0.208 7766 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.67% 0.0027
13.123 5606.48 11.4 0.174 11.3 13.4 5.82 1.53%Sand-Slime Tailing 0.059 119.0 0.71 0.21 0.50 1 1.53 17.252 239.81 20.19 21 1.63% 2.6 47% 1.11 0.00 1.11 0 0.93 0.05 0.99 1.0 0.053 37.38 57.57 0.085 1.61 0.95 0.26 0.80 1.11 1.0 0.038 3.18 64.28 0.105 4.28 2.94 2 6.15 460 1.8E-03 3.9E+02 2.8E-04 10 0.209 7738 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.71% 0.0028
13.287 5606.31 10.3 0.144 10.2 24.4 10.58 1.40%Sand-Slime Tailing 0.059 119.0 0.72 0.21 0.51 1 1.52 15.385 213.85 18.14 19 1.50% 2.6 47% 1.12 0.00 1.12 0 0.93 0.05 0.99 1.0 0.053 36.66 54.80 0.082 1.56 0.95 0.25 0.80 1.11 1.0 0.038 3.32 60.28 0.100 4.07 2.81 2 6.20 460 1.8E-03 3.9E+02 2.8E-04 10 0.209 7710 0.07% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.74% 0.0029
13.451 5606.15 8.1 0.085 7.9 29.0 12.57 1.05%Sand-Slime Tailing 0.059 119.0 0.73 0.22 0.51 1 1.50 11.935 165.89 14.18 14 1.15% 2.6 47% 1.13 0.00 1.13 0 0.93 0.05 0.99 1.0 0.053 35.27 49.45 0.077 1.46 0.95 0.22 0.80 1.11 1.0 0.038 3.59 50.87 0.092 3.71 2.58 2 6.25 460 1.8E-03 3.9E+02 2.8E-04 10 0.210 7682 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.78% 0.0029
13.615 5605.98 8.1 0.071 7.9 37.9 16.43 0.88%Sand-Slime Tailing 0.059 119.0 0.74 0.22 0.52 1 1.49 11.761 163.48 14.07 14 0.96% 2.6 47% 1.14 0.00 1.14 0 0.93 0.05 0.99 1.0 0.053 35.24 49.31 0.077 1.46 0.95 0.22 0.80 1.11 1.0 0.038 3.38 47.57 0.090 3.57 2.51 2 6.30 460 1.8E-03 3.9E+02 2.9E-04 10 0.210 7655 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.81% 0.0030
13.779 5605.82 8.4 0.071 8.2 32.9 14.24 0.85%Sand-Slime Tailing 0.059 119.0 0.75 0.23 0.52 1 1.48 12.139 168.73 14.45 15 0.93% 2.6 47% 1.15 0.00 1.15 0 0.92 0.05 0.99 1.0 0.053 35.37 49.82 0.077 1.47 0.95 0.22 0.80 1.11 1.0 0.038 3.27 47.31 0.089 3.53 2.50 2 6.35 460 1.8E-03 3.9E+02 2.9E-04 10 0.211 7628 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.85% 0.0030
13.943 5605.66 8.9 0.054 8.7 37.7 16.35 0.61%Sand-Slime Tailing 0.059 119.0 0.76 0.23 0.52 1 1.47 12.806 178.01 15.28 16 0.66% 2.5 47% 1.16 0.00 1.16 0 0.92 0.05 0.99 1.0 0.053 35.66 50.94 0.078 1.49 0.95 0.23 0.80 1.10 1.0 0.038 2.79 42.58 0.085 3.35 2.42 2 6.40 460 1.8E-03 3.9E+02 2.9E-04 10 0.211 7601 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.89% 0.0031
14.107 5605.49 11.6 0.101 11.4 38.4 16.62 0.87%Sand-Slime Tailing 0.059 119.0 0.77 0.24 0.53 1 1.46 16.641 231.30 19.73 20 0.93% 2.5 47% 1.17 0.00 1.17 0 0.92 0.05 0.98 1.0 0.052 37.22 56.96 0.085 1.61 0.95 0.26 0.80 1.10 1.0 0.038 2.59 51.19 0.092 3.59 2.60 2 6.45 460 1.8E-03 3.9E+02 2.9E-04 10 0.212 7575 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.92% 0.0032
14.271 5605.33 9.4 0.125 9.3 28.4 12.32 1.32%Sand-Slime Tailing 0.059 119.0 0.78 0.24 0.53 1 1.45 13.475 187.30 15.95 16 1.44% 2.6 47% 1.18 0.00 1.18 0 0.92 0.05 0.98 1.0 0.052 35.90 51.85 0.079 1.51 0.95 0.23 0.80 1.10 1.0 0.038 3.62 57.81 0.098 3.77 2.64 2 6.50 460 1.8E-03 3.9E+02 2.9E-04 10 0.212 7549 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.96% 0.0032
14.436 5605.16 8.8 0.126 8.5 40.5 17.53 1.44%Sand-Slime Tailing 0.059 119.0 0.79 0.25 0.54 1 1.44 12.287 170.78 14.69 15 1.58% 2.7 47% 1.19 0.00 1.19 0 0.92 0.05 0.98 1.0 0.052 35.45 50.15 0.078 1.48 0.95 0.22 0.80 1.10 1.0 0.038 4.01 58.88 0.099 3.78 2.63 2 6.55 460 1.8E-03 3.9E+02 3.0E-04 10 0.212 7523 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.99% 0.0033
14.600 5605.00 11.2 0.094 11.1 28.5 12.36 0.84%Sand-Slime Tailing 0.059 119.0 0.80 0.25 0.54 1 1.43 15.862 220.48 18.72 19 0.90% 2.5 47% 1.20 0.00 1.20 0 0.92 0.05 0.98 1.0 0.052 36.87 55.59 0.083 1.59 0.95 0.25 0.80 1.10 1.0 0.038 2.68 50.09 0.092 3.47 2.53 2 6.60 500 1.8E-03 4.6E+02 2.5E-04 10 0.213 7498 0.05% 2.00 0.65 0.03% 0.008 0.34 0.079 0.765 1.24% 0.0020
14.764 5604.84 15.3 0.076 15.3 10.5 4.53 0.50%Sand-Slime Tailing 0.059 119.0 0.81 0.26 0.55 1 1.41 21.493 298.76 25.07 27 0.52% 2.3 47% 1.21 0.00 1.21 0 0.92 0.06 0.98 1.0 0.052 39.09 64.16 0.093 1.78 0.95 0.29 0.80 1.09 1.0 0.038 1.80 45.16 0.088 3.29 2.54 2 6.65 500 1.8E-03 4.6E+02 2.6E-04 10 0.213 7473 0.05% 2.00 0.65 0.03% 0.008 0.34 0.079 0.765 1.26% 0.0021
14.928 5604.67 15.6 0.127 15.5 13.6 5.87 0.81%Sand-Slime Tailing 0.059 119.0 0.82 0.26 0.55 1 1.40 21.691 301.51 25.33 27 0.86% 2.3 47% 1.22 0.00 1.22 0 0.92 0.06 0.98 1.0 0.052 39.19 64.52 0.093 1.79 0.95 0.29 0.80 1.09 1.0 0.038 2.10 53.28 0.094 3.51 2.65 2 6.70 500 1.8E-03 4.6E+02 2.6E-04 10 0.214 7448 0.05% 2.00 0.65 0.03% 0.008 0.34 0.079 0.765 1.29% 0.0021
15.092 5604.51 13.7 0.155 13.6 16.5 7.13 1.13%Sand-Slime Tailing 0.059 119.0 0.82 0.27 0.56 1 1.40 19.062 264.96 22.31 23 1.20% 2.5 47% 1.23 0.00 1.23 0 0.91 0.05 0.98 1.0 0.052 38.12 60.43 0.088 1.70 0.95 0.27 0.80 1.09 1.0 0.038 2.64 58.96 0.099 3.66 2.68 2 6.75 500 1.8E-03 4.6E+02 2.6E-04 10 0.214 7424 0.05% 2.00 0.65 0.03% 0.009 0.34 0.079 0.765 1.32% 0.0022
15.256 5604.34 17.0 0.133 17.0 4.9 2.14 0.78%Sand-Slime Tailing 0.059 119.0 0.83 0.27 0.56 1 1.37 23.328 324.26 27.14 29 0.82% 2.3 47% 1.24 0.00 1.24 0 0.91 0.06 0.98 1.0 0.052 39.82 66.96 0.096 1.85 0.95 0.30 0.80 1.09 1.0 0.038 1.98 53.66 0.094 3.46 2.66 2 6.80 500 1.8E-03 4.6E+02 2.6E-04 10 0.215 7399 0.05% 2.00 0.65 0.03% 0.009 0.34 0.079 0.765 1.35% 0.0022
15.420 5604.18 13.1 0.107 13.1 3.5 1.53 0.82%Sand-Slime Tailing 0.059 119.0 0.84 0.28 0.57 1 1.39 18.162 252.45 21.13 22 0.87% 2.4 47% 1.25 0.00 1.25 0 0.91 0.05 0.98 1.0 0.052 37.71 58.84 0.087 1.68 0.95 0.27 0.80 1.09 1.0 0.038 2.44 51.47 0.093 3.37 2.52 2 6.85 500 1.8E-03 4.6E+02 2.6E-04 10 0.215 7375 0.05% 2.00 0.65 0.03% 0.009 0.34 0.079 0.765 1.37% 0.0023
15.584 5604.02 9.6 0.107 9.5 9.3 4.03 1.12%Sand-Slime Tailing 0.059 119.0 0.85 0.28 0.57 1 1.38 13.129 182.50 15.34 15 1.23% 2.6 47% 1.26 0.00 1.26 0 0.91 0.05 0.98 1.0 0.052 35.68 51.02 0.078 1.52 0.95 0.23 0.80 1.09 1.0 0.038 3.54 54.32 0.095 3.43 2.47 2 6.90 500 1.8E-03 4.6E+02 2.7E-04 10 0.216 7352 0.06% 2.00 0.65 0.03% 0.009 0.34 0.079 0.765 1.40% 0.0023
15.748 5603.85 9.8 0.122 9.7 17.6 7.63 1.24%Sand-Slime Tailing 0.059 119.0 0.86 0.29 0.58 1 1.37 13.307 184.97 15.63 16 1.36% 2.6 47% 1.27 0.00 1.27 0 0.91 0.05 0.98 1.0 0.052 35.78 51.41 0.079 1.53 0.95 0.23 0.80 1.08 1.0 0.039 3.65 57.00 0.097 3.49 2.51 2 6.95 500 1.8E-03 4.6E+02 2.7E-04 10 0.216 7328 0.06% 2.00 0.65 0.03% 0.009 0.34 0.079 0.765 1.43% 0.0023
15.912 5603.69 7.9 0.102 7.7 32.5 14.09 1.29%Sand-Slime Tailing 0.059 119.0 0.87 0.29 0.58 1 1.36 10.527 146.33 12.55 12 1.44% 2.8 47% 1.28 0.00 1.28 0 0.91 0.05 0.98 1.0 0.052 34.70 47.25 0.075 1.45 0.95 0.20 0.80 1.08 1.0 0.039 4.42 55.40 0.096 3.41 2.43 2 7.00 500 1.8E-03 4.6E+02 2.7E-04 10 0.216 7305 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.46% 0.0024
16.076 5603.52 8.2 0.088 7.9 46.7 20.23 1.07%Sand-Slime Tailing 0.059 119.0 0.88 0.30 0.58 1 1.35 10.719 148.99 12.91 13 1.20% 2.7 47% 1.29 0.00 1.29 0 0.91 0.05 0.98 1.0 0.051 34.83 47.74 0.075 1.46 0.95 0.21 0.80 1.08 1.0 0.039 4.03 52.01 0.093 3.29 2.38 2 7.05 500 1.8E-03 4.6E+02 2.7E-04 10 0.217 7282 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.49% 0.0024
16.240 5603.36 8.7 0.081 8.3 59.6 25.83 0.93%Sand-Slime Tailing 0.059 119.0 0.89 0.30 0.59 1 1.35 11.178 155.37 13.56 13 1.04% 2.7 47% 1.30 0.00 1.30 0 0.91 0.05 0.98 1.0 0.051 35.06 48.62 0.076 1.48 0.95 0.21 0.80 1.08 1.0 0.039 3.68 49.89 0.092 3.21 2.35 2 7.10 500 1.8E-03 4.6E+02 2.7E-04 10 0.217 7259 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.51% 0.0025
16.404 5603.20 8.6 0.104 8.2 71.5 31.00 1.21%Sand-Slime Tailing 0.059 119.0 0.90 0.31 0.59 1 1.34 10.935 152.00 13.39 13 1.35% 2.7 47% 1.31 0.00 1.31 0 0.90 0.05 0.98 1.0 0.051 35.00 48.39 0.076 1.48 0.95 0.21 0.80 1.08 1.0 0.039 4.11 54.99 0.095 3.32 2.40 2 7.15 500 1.8E-03 4.6E+02 2.8E-04 10 0.218 7237 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.54% 0.0025
16.568 5603.03 9.3 0.138 8.8 83.6 36.24 1.48%Sand-Slime Tailing 0.059 119.0 0.91 0.31 0.60 1 1.33 11.719 162.90 14.42 14 1.64% 2.7 47% 1.32 0.00 1.32 0 0.90 0.05 0.98 1.0 0.051 35.36 49.78 0.077 1.51 0.94 0.22 0.80 1.08 1.0 0.039 4.21 60.68 0.101 3.48 2.50 2 7.20 500 1.8E-03 4.6E+02 2.8E-04 10 0.218 7215 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.57% 0.0026
16.732 5602.87 9.9 0.155 9.3 84.3 36.52 1.57%Sand-Slime Tailing 0.059 119.0 0.92 0.32 0.60 1 1.32 12.323 171.28 15.12 15 1.74% 2.7 47% 1.33 0.00 1.33 0 0.90 0.05 0.98 1.0 0.051 35.60 50.72 0.078 1.53 0.94 0.22 0.80 1.07 1.0 0.039 4.17 63.04 0.103 3.54 2.54 2 7.25 500 1.8E-03 4.6E+02 2.8E-04 10 0.218 7193 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.60% 0.0026
16.896 5602.70 26.6 0.355 26.0 83.4 36.16 1.34%Sand-Slime Tailing 0.059 119.0 0.93 0.32 0.61 1 1.27 33.013 458.88 39.11 42 1.39% 2.3 47% 1.34 0.00 1.34 0 0.90 0.06 0.97 1.0 0.051 44.02 83.13 0.117 2.31 0.94 0.36 0.80 1.07 1.0 0.039 1.93 75.38 0.120 4.08 3.19 2 7.30 500 1.8E-03 4.6E+02 2.8E-04 10 0.219 7171 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.62% 0.0027
17.060 5602.54 17.7 0.388 17.6 16.1 6.97 2.20%Sand-Slime Tailing 0.059 119.0 0.94 0.33 0.61 1 1.29 22.634 314.61 26.44 27 2.32% 2.6 47% 1.35 0.00 1.35 0 0.90 0.06 0.97 1.0 0.051 39.57 66.01 0.095 1.87 0.94 0.30 0.80 1.07 1.0 0.039 3.20 84.66 0.136 4.61 3.24 2 7.35 500 1.8E-03 4.6E+02 2.8E-04 10 0.219 7149 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.65% 0.0027
17.224 5602.38 12.0 0.476 11.8 26.8 11.63 3.97%Slime Tailings 0.057 113.1 0.95 0.33 0.62 1 1.30 15.332 213.11 18.06 18 4.32% 2.9 71% 1.36 0.00 1.36 0 0.90 0.05 0.98 1.0 0.051 36.38 54.44 0.082 1.62 0.94 0.25 0.80 1.07 1.0 0.039 5.61 101.37 0.177 5.94 3.78 2 7.40 500 1.8E-03 4.4E+02 3.0E-04 16 0.471 5873 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.10% 0.0035
P = γeff*(Geff
/Gmax)
(tsf)
Volumetric Strain for Design Event, εv (%)
Incrementa
l Consolidation (ft)
CN
Volumetric
Strain for
Design
Event, εv (%)
Incremental Consolidation (ft)
TOTAL SEISMIC SETTLEMENT (FT):
Midpoint Depth at t1, z1
Shear Wave Velocity, Vs
Soil Density, ρ (tcf)b
Threshhol
d Shear Strain, γtv
(%)
Volumetri
c Strain at
15 Cycles,
εc-15 (%)Rc
Plasticity Index, PI g1 g2
Shear Strain, γ (%)a
Effective Stress at Bottom of Layer
Effective Stress at Midpoint of Layer FINAL COVER
Erosion Protection Layer
Water Storage/Rooting Zone Layer
qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Equil Pore Pressure at Midpoint of Layer (tsf)
Max Shear
Strain
Modulus,
Gmax (tsf)
Unit Weight (tcf)
Unit Weight (pcf)
Total Stress at Bottom of Layer
Total Stress at Midpoint of Layer
Equil Pore Pressure at Bottom of Layer
Cyclic Resistance Ratio
FoS
Cyclic Stress Ratio
FoS
∆qc1n qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Threshhol
d Shear
Strain, γtv (%)
Volumetric Strain at 15 Cycles, εc-15 (%)RcCNg1g2
Shear
Strain, γ ab
Seismic Settlement Analysis - Stewart et al (2004)
Shear Wave Velocity, Vs
High Compaction Layer
Platform/Random Fill Layer
Pw (u2)Pw (u2)
2013 CPT Data from ConeTec CPT Data Interpretations
fs/qt
Material
Type (as determined by fines
Unit Weight Unit Weight
Total
Stress
at time of CPT
Depth
at time of CPT Elevation qt fs qc
Effective
Stress at
time of CPT
Saturated
at time of CPT
Type Index,
Ic FC
Youd, et al (2001)
Max. Horiz. Acceleration, Amax/g: 0.15
Earthquake Moment Magnitude, M:
Idriss and Boulanger (2008)
Max. Horiz. Acceleration, Amax/g:
Earthquake Moment Magnitude, M:
Magnitude Scaling Factor, MSF:
WHITE MESA TAILINGS REPOSITORY LIQUEFACTION AND SEISMIC SETTLEMENT ANALYSES - 2W7-C Elev. at Top of Layer (ft)
Elev. At Midpoint of Layer (ft)
Elev. At Bottom of Layer
Thickness of Layer (ft)
5.5
Magnitude Scaling Factor, MSF:
Equil
Pore
Pressure at time of
Conditions at t1 Liquefaction Triggering AnalysesEquil
Pore Pressure at t1CN qc1 qc1 qc1N
Normalized
Cone
Penetration Resistance, Qt
Normalize
d Friction
Ratio, Fr (%)
Total Stress at t1 Liquefiable?1=Yes
2=No
Cyclic Stress RatioEffective Stress at t1
Saturated at t1
Idriss & Boulanger (2008)
CSR
M=7.5,
s'v=1atm
Kc
Scaling Factor for stress ration, rm
Volumetric Strain Ratio for Site-Specific Design Ear
Equiv. Number of Uniform Strain Cycles, N
Youd et al. (2001)
CSR
M=7.5,
s'v=1atm
Depth at t1, z1
Soil Density, ρ
Maximum Shear Strain
Modulus,
Gmax
P =
γeff*(Geff/Gmax)
Plastici
ty Index, PI
Liquef_SeismicSettle_30Aug2015.xls Page 14 of 29
Energy Fuels Resources (USA) Inc.White Mesa Mill
Seismic Settlement Analyses
Data File: 13-52106_SP2W7-C-BSC-CPT 5613.10 Water surface elevation during CPT investigation (ft5619.60 Ground Surface Elevation at time of CPT (ft amsl)
Location: White Mesa 2013 CPT Investigation 0.15 5611.32 Water surface elevation at t0 (ft amsl)5626.65 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl)
..\..\..\6.2.3 Field Data\2013 Field Investigation\Conetec Dat 5.5 5595.40 Water surface elevation at t1 (ft amsl) 0.50 Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after pla ###### 5626.4 5626.15 0.50 0.055 110 0.028 0.014 0.00 0.00 0.028 0.014 0.08 508 1.7E-03 4.4E+02 3.0E-06 11 0.068 46696 0.00% 1.20 0.80 0.04% 0.000 0.32 0.133 0.778 0.00% 0.0000
Tailings Sands 1.69 5590.40 Water surface elevation at t2 (ft amsl)3.50 Thickness of Water Storage/Rooting Zone (ft)###### 5624.4 5622.65 3.50 0.054 107 0.215 0.121 0.00 0.00 0.215 0.121 0.69 508 1.7E-03 4.3E+02 2.8E-05 11 0.118 18930 0.00% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
Tailings Sand-Slimes 4.00 Thickness of High Compaction Layer (ft)###### 5620.65 5618.65 4.00 0.060 120 0.454 0.334 0.00 0.00 0.454 0.334 1.83 508 1.9E-03 4.8E+02 6.8E-05 11 0.153 12419 0.01% 0.65 0.75 0.02% 0.000 0.34 0.079 0.765 0.00% 0.0000
Tailings Slimes 1.44 -0.95 Thickness of Random/Platform Fill on on top of existing interim cover (ft) ###### 5619.13 5619.60 -0.95 0.050 101 0.406 0.430 0.00 0.00 0.406 0.430 2.29 508 1.6E-03 4.0E+02 1.0E-04 11 0.164 11187 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
Interim Cover 0.47 812.44 Additional Stress due to Final Cover Placement, ΔσFC (psf)
Cells Requiring User Input/Manipulation 2.21 2.21 7.51 5590.40 Elevation of bottom of tailings (liner) (ft amsl)
0.347
rd Cσ Kσ Ka rd Dr f Kσ Ka Avg
(ft) (ft amsl) TSF TSF TSF (ft) PSI (%) (tcf) (pcf) (tsf)(tsf)(tsf) 1=Yes TSF MPa % (tsf)(tsf)(tsf) 1=Yes FoS m
0=No 0=No (ft/sec) (tcf) tsf tsf (%)
P = γeff*(Geff
/Gmax)
(tsf)
Volumetric Strain for Design Event, εv (%)
Incrementa
l Consolidation (ft)
CN
Volumetric
Strain for
Design
Event, εv (%)
Incremental Consolidation (ft)
TOTAL SEISMIC SETTLEMENT (FT):
Midpoint Depth at t1, z1
Shear Wave Velocity, Vs
Soil Density, ρ (tcf)b
Threshhol
d Shear Strain, γtv
(%)
Volumetri
c Strain at
15 Cycles,
εc-15 (%)Rc
Plasticity Index, PI g1 g2
Shear Strain, γ (%)a
Effective Stress at Bottom of Layer
Effective Stress at Midpoint of Layer FINAL COVER
Erosion Protection Layer
Water Storage/Rooting Zone Layer
qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Equil Pore Pressure at Midpoint of Layer (tsf)
Max Shear
Strain
Modulus,
Gmax (tsf)
Unit Weight (tcf)
Unit Weight (pcf)
Total Stress at Bottom of Layer
Total Stress at Midpoint of Layer
Equil Pore Pressure at Bottom of Layer
Cyclic Resistance Ratio
FoS
Cyclic Stress Ratio
FoS
∆qc1n qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Threshhol
d Shear
Strain, γtv (%)
Volumetric Strain at 15 Cycles, εc-15 (%)RcCNg1g2
Shear
Strain, γ ab
Seismic Settlement Analysis - Stewart et al (2004)
Shear Wave Velocity, Vs
High Compaction Layer
Platform/Random Fill Layer
Pw (u2)Pw (u2)
2013 CPT Data from ConeTec CPT Data Interpretations
fs/qt
Material
Type (as determined by fines
Unit Weight Unit Weight
Total
Stress
at time of CPT
Depth
at time of CPT Elevation qt fs qc
Effective
Stress at
time of CPT
Saturated
at time of CPT
Type Index,
Ic FC
Youd, et al (2001)
Max. Horiz. Acceleration, Amax/g: 0.15
Earthquake Moment Magnitude, M:
Idriss and Boulanger (2008)
Max. Horiz. Acceleration, Amax/g:
Earthquake Moment Magnitude, M:
Magnitude Scaling Factor, MSF:
WHITE MESA TAILINGS REPOSITORY LIQUEFACTION AND SEISMIC SETTLEMENT ANALYSES - 2W7-C Elev. at Top of Layer (ft)
Elev. At Midpoint of Layer (ft)
Elev. At Bottom of Layer
Thickness of Layer (ft)
5.5
Magnitude Scaling Factor, MSF:
Equil
Pore
Pressure at time of
Conditions at t1 Liquefaction Triggering AnalysesEquil
Pore Pressure at t1CN qc1 qc1 qc1N
Normalized
Cone
Penetration Resistance, Qt
Normalize
d Friction
Ratio, Fr (%)
Total Stress at t1 Liquefiable?1=Yes
2=No
Cyclic Stress RatioEffective Stress at t1
Saturated at t1
Idriss & Boulanger (2008)
CSR
M=7.5,
s'v=1atm
Kc
Scaling Factor for stress ration, rm
Volumetric Strain Ratio for Site-Specific Design Ear
Equiv. Number of Uniform Strain Cycles, N
Youd et al. (2001)
CSR
M=7.5,
s'v=1atm
Depth at t1, z1
Soil Density, ρ
Maximum Shear Strain
Modulus,
Gmax
P =
γeff*(Geff/Gmax)
Plastici
ty Index, PI
17.388 5602.21 14.6 0.394 14.5 24.8 10.76 2.69%Slime Tailings 0.057 113.1 0.96 0.34 0.62 1 1.29 18.673 259.56 21.92 22 2.88% 2.7 71% 1.37 0.00 1.37 0 0.90 0.05 0.98 1.0 0.051 37.72 59.64 0.087 1.73 0.94 0.27 0.80 1.07 1.0 0.039 4.07 89.16 0.146 4.87 3.30 2 7.45 500 1.8E-03 4.4E+02 3.0E-04 16 0.471 5856 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.13% 0.0035
17.552 5602.05 10.6 0.341 10.5 16.3 7.05 3.20%Slime Tailings 0.057 113.1 0.97 0.34 0.62 1 1.28 13.540 188.21 15.88 15 3.53% 2.9 71% 1.38 0.00 1.38 0 0.90 0.05 0.98 1.0 0.051 35.62 51.49 0.079 1.56 0.94 0.23 0.80 1.07 1.0 0.039 5.55 88.16 0.144 4.76 3.16 2 7.50 500 1.8E-03 4.4E+02 3.1E-04 16 0.472 5840 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.16% 0.0035
17.716 5601.88 11.2 0.288 10.8 64.1 27.78 2.57%Slime Tailings 0.057 113.1 0.98 0.35 0.63 1 1.28 13.790 191.68 16.61 16 2.82% 2.8 71% 1.39 0.00 1.39 0 0.89 0.05 0.98 1.0 0.050 35.87 52.48 0.080 1.58 0.94 0.24 0.80 1.06 1.0 0.039 4.87 80.89 0.129 4.26 2.92 2 7.55 500 1.8E-03 4.4E+02 3.1E-04 16 0.472 5824 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.19% 0.0036
17.880 5601.72 12.9 0.210 12.7 33.7 14.62 1.63%Sand-Slime Tailing 0.059 119.0 0.99 0.36 0.63 1 1.27 16.138 224.31 19.05 19 1.76% 2.6 47% 1.40 0.00 1.40 0 0.89 0.05 0.97 1.0 0.050 36.98 56.04 0.084 1.66 0.94 0.25 0.80 1.06 1.0 0.039 3.58 68.22 0.110 3.58 2.62 2 7.60 500 1.8E-03 4.6E+02 2.9E-04 10 0.221 7049 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.79% 0.0029
18.044 5601.56 10.5 0.231 10.2 41.6 18.04 2.20%Slime Tailings 0.057 113.1 1.00 0.36 0.64 1 1.26 12.920 179.59 15.39 15 2.44% 2.8 71% 1.40 0.00 1.40 0 0.89 0.05 0.98 1.0 0.050 35.45 50.83 0.078 1.56 0.94 0.23 0.80 1.06 1.0 0.039 4.82 74.13 0.118 3.83 2.69 2 7.65 500 1.8E-03 4.4E+02 3.1E-04 16 0.473 5791 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.25% 0.0037
18.208 5601.39 9.1 0.184 8.6 70.9 30.71 2.03%Slime Tailings 0.057 113.1 1.01 0.37 0.64 1 1.26 10.855 150.88 13.25 13 2.28% 2.8 71% 1.41 0.00 1.41 0 0.89 0.05 0.98 1.0 0.050 34.70 47.96 0.076 1.50 0.94 0.21 0.80 1.06 1.0 0.039 5.21 69.03 0.111 3.57 2.54 2 7.70 500 1.8E-03 4.4E+02 3.1E-04 16 0.473 5775 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.27% 0.0037
18.372 5601.23 10.2 0.118 9.8 69.3 30.03 1.16%Sand-Slime Tailing 0.059 119.0 1.02 0.37 0.65 1 1.25 12.220 169.85 14.82 14 1.28% 2.7 47% 1.42 0.00 1.42 0 0.89 0.05 0.98 1.0 0.050 35.50 50.32 0.078 1.55 0.94 0.22 0.80 1.06 1.0 0.039 3.79 56.22 0.097 3.10 2.32 2 7.75 500 1.8E-03 4.6E+02 3.0E-04 10 0.222 6990 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.87% 0.0031
18.537 5601.06 10.3 0.159 9.8 81.3 35.24 1.55%Sand-Slime Tailing 0.059 119.0 1.03 0.38 0.65 1 1.24 12.152 168.91 14.85 14 1.72% 2.7 47% 1.43 0.00 1.43 0 0.89 0.05 0.98 1.0 0.050 35.51 50.36 0.078 1.55 0.94 0.22 0.80 1.06 1.0 0.039 4.27 63.40 0.104 3.31 2.43 2 7.80 500 1.8E-03 4.6E+02 3.0E-04 10 0.223 6970 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.90% 0.0031
18.701 5600.90 12.1 0.167 11.4 113.1 49.03 1.38%Sand-Slime Tailing 0.059 119.0 1.04 0.38 0.66 1 1.24 14.138 196.51 17.43 17 1.50% 2.6 47% 1.44 0.00 1.44 0 0.89 0.05 0.97 1.0 0.050 36.42 53.85 0.081 1.63 0.94 0.24 0.80 1.06 1.0 0.039 3.59 62.60 0.103 3.26 2.44 2 7.85 500 1.8E-03 4.6E+02 3.0E-04 10 0.223 6951 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.92% 0.0032
18.865 5600.74 14.0 0.166 13.5 77.6 33.64 1.19%Sand-Slime Tailing 0.059 119.0 1.05 0.39 0.66 1 1.23 16.569 230.31 19.94 20 1.29% 2.6 47% 1.45 0.00 1.45 0 0.89 0.05 0.97 1.0 0.050 37.29 57.23 0.085 1.70 0.94 0.26 0.80 1.05 1.0 0.039 3.05 60.77 0.101 3.17 2.44 2 7.90 500 1.8E-03 4.6E+02 3.1E-04 10 0.223 6931 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.95% 0.0032
19.029 5600.57 13.9 0.222 13.5 75.7 32.80 1.59%Sand-Slime Tailing 0.059 119.0 1.06 0.39 0.67 1 1.22 16.479 229.06 19.81 19 1.72% 2.6 47% 1.46 0.00 1.46 0 0.88 0.05 0.97 1.0 0.050 37.25 57.06 0.085 1.70 0.94 0.26 0.80 1.05 1.0 0.039 3.48 68.88 0.110 3.45 2.58 2 7.95 500 1.8E-03 4.6E+02 3.1E-04 10 0.224 6912 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.98% 0.0032
19.193 5600.41 14.2 0.182 13.9 41.6 18.02 1.28%Sand-Slime Tailing 0.059 119.0 1.07 0.40 0.67 1 1.22 16.937 235.42 20.04 20 1.39% 2.6 47% 1.47 0.00 1.47 0 0.88 0.05 0.97 1.0 0.050 37.33 57.37 0.085 1.71 0.94 0.26 0.80 1.05 1.0 0.039 3.14 62.99 0.103 3.21 2.46 2 8.00 500 1.8E-03 4.6E+02 3.1E-04 10 0.224 6893 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 2.01% 0.0033
19.357 5600.24 12.2 0.148 11.8 73.0 31.64 1.21%Sand-Slime Tailing 0.059 119.0 1.08 0.40 0.67 1 1.21 14.220 197.65 17.16 16 1.33% 2.6 47% 1.48 0.00 1.48 0 0.88 0.05 0.97 1.0 0.050 36.32 53.47 0.081 1.63 0.94 0.24 0.80 1.05 1.0 0.039 3.47 59.53 0.100 3.07 2.35 2 8.05 500 1.8E-03 4.6E+02 3.1E-04 10 0.225 6874 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 2.04% 0.0033
19.521 5600.08 10.5 0.113 9.8 106.9 46.30 1.08%Sand-Slime Tailing 0.059 119.0 1.09 0.41 0.68 1 1.20 11.845 164.64 14.69 14 1.20% 2.7 47% 1.49 0.00 1.49 0 0.88 0.05 0.97 1.0 0.050 35.45 50.14 0.078 1.57 0.94 0.22 0.80 1.05 1.0 0.039 3.75 55.14 0.096 2.93 2.25 2 8.10 500 1.8E-03 4.6E+02 3.1E-04 10 0.225 6856 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.07% 0.0034
19.685 5599.92 10.6 0.200 9.8 131.7 57.08 1.89%Slime Tailings 0.057 113.1 1.09 0.41 0.68 1 1.20 11.716 162.86 14.75 14 2.10% 2.8 71% 1.50 0.00 1.50 0 0.88 0.05 0.97 1.0 0.049 35.22 49.98 0.077 1.57 0.94 0.22 0.80 1.05 1.0 0.039 4.71 69.55 0.111 3.39 2.48 2 8.15 538 1.8E-03 5.1E+02 2.9E-04 16 0.476 5635 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.78% 0.0029
19.849 5599.75 36.3 0.300 35.3 156.8 67.96 0.83%Sand Tailings 0.062 123.5 1.10 0.42 0.69 1 1.15 40.813 567.29 48.71 51 0.85% 2.1 18% 1.51 0.00 1.51 0 0.88 0.07 0.96 1.0 0.049 34.54 83.26 0.117 2.40 0.94 0.40 0.80 1.05 1.0 0.040 1.46 71.18 0.114 3.44 2.92 2 8.20 538 1.9E-03 5.5E+02 2.7E-04 0 0.227 8615 0.07% 2.20 1.00 0.03% 0.001 0.34 0.079 0.765 0.13% 0.0002
20.013 5599.59 33.0 0.456 32.9 14.8 6.43 1.38%Sand-Slime Tailing 0.059 119.0 1.11 0.42 0.69 1 1.15 37.997 528.16 44.26 46 1.43% 2.3 47% 1.52 0.00 1.52 0 0.88 0.07 0.96 1.0 0.049 45.82 90.08 0.127 2.61 0.94 0.38 0.80 1.04 1.0 0.040 1.86 82.24 0.132 3.96 3.29 2 8.25 538 1.8E-03 5.3E+02 2.8E-04 10 0.226 6801 0.06% 2.00 0.65 0.03% 0.009 0.34 0.079 0.765 1.44% 0.0024
20.177 5599.42 18.7 0.520 18.6 13.8 5.96 2.78%Slime Tailings 0.057 113.1 1.12 0.43 0.70 1 1.17 21.803 303.07 25.44 25 2.96% 2.7 71% 1.53 0.00 1.53 0 0.87 0.06 0.97 1.0 0.049 38.95 64.39 0.093 1.90 0.94 0.29 0.80 1.04 1.0 0.040 3.80 96.63 0.164 4.90 3.40 2 8.30 538 1.8E-03 5.1E+02 2.9E-04 16 0.478 5590 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.85% 0.0030
20.341 5599.26 13.7 0.464 13.5 40.0 17.35 3.39%Slime Tailings 0.057 113.1 1.13 0.43 0.70 1 1.17 15.789 219.47 18.68 18 3.69% 2.8 71% 1.54 0.00 1.54 0 0.87 0.05 0.97 1.0 0.049 36.59 55.27 0.083 1.69 0.94 0.25 0.80 1.04 1.0 0.040 5.20 97.17 0.165 4.92 3.30 2 8.35 538 1.8E-03 5.1E+02 3.0E-04 16 0.478 5577 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.88% 0.0031
20.505 5599.10 11.5 0.373 11.1 62.3 27.01 3.25%Slime Tailings 0.057 113.1 1.14 0.44 0.71 1 1.17 12.959 180.13 15.58 15 3.61% 2.9 71% 1.55 0.00 1.55 0 0.87 0.05 0.97 1.0 0.049 35.51 51.09 0.079 1.60 0.94 0.23 0.80 1.04 1.0 0.040 5.80 90.30 0.148 4.39 3.00 2 8.40 538 1.8E-03 5.1E+02 3.0E-04 16 0.478 5563 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.90% 0.0031
20.669 5598.93 12.4 0.338 11.7 107.6 46.62 2.73%Slime Tailings 0.057 113.1 1.15 0.44 0.71 1 1.16 13.644 189.65 16.75 16 3.00% 2.8 71% 1.56 0.00 1.56 0 0.87 0.05 0.97 1.0 0.049 35.92 52.68 0.080 1.64 0.94 0.24 0.80 1.04 1.0 0.040 5.09 85.21 0.138 4.05 2.84 2 8.45 538 1.8E-03 5.1E+02 3.0E-04 16 0.479 5549 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.92% 0.0032
20.833 5598.77 13.3 0.244 12.9 67.9 29.44 1.84%Sand-Slime Tailing 0.059 119.0 1.16 0.45 0.71 1 1.16 14.894 207.02 17.87 17 2.01% 2.7 47% 1.57 0.00 1.57 0 0.87 0.05 0.97 1.0 0.049 36.57 54.44 0.082 1.68 0.93 0.24 0.80 1.04 1.0 0.040 4.06 72.57 0.116 3.38 2.53 2 8.50 538 1.8E-03 5.3E+02 2.9E-04 10 0.228 6716 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.55% 0.0025
20.997 5598.60 15.3 0.235 15.0 45.2 19.60 1.54%Sand-Slime Tailing 0.059 119.0 1.17 0.45 0.72 1 1.15 17.248 239.75 20.41 20 1.67% 2.6 47% 1.58 0.00 1.58 0 0.87 0.05 0.97 1.0 0.049 37.46 57.87 0.086 1.76 0.93 0.26 0.80 1.04 1.0 0.040 3.40 69.41 0.111 3.23 2.49 2 8.55 538 1.8E-03 5.3E+02 2.9E-04 10 0.228 6698 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.57% 0.0026
21.161 5598.44 18.4 0.276 18.0 52.8 22.87 1.50%Sand-Slime Tailing 0.059 119.0 1.18 0.46 0.72 1 1.14 20.588 286.17 24.35 24 1.61% 2.5 47% 1.59 0.00 1.59 0 0.87 0.06 0.97 1.0 0.048 38.84 63.19 0.091 1.89 0.93 0.28 0.80 1.04 1.0 0.040 2.94 71.66 0.114 3.30 2.59 2 8.60 538 1.8E-03 5.3E+02 2.9E-04 10 0.228 6681 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.60% 0.0026
21.325 5598.27 17.9 0.231 17.7 21.2 9.20 1.29%Sand-Slime Tailing 0.059 119.0 1.19 0.46 0.73 1 1.14 20.141 279.96 23.57 23 1.39% 2.5 47% 1.60 0.00 1.60 0 0.87 0.05 0.97 1.0 0.048 38.57 62.13 0.090 1.87 0.93 0.28 0.80 1.03 1.0 0.040 2.83 66.67 0.108 3.09 2.48 2 8.65 538 1.8E-03 5.3E+02 2.9E-04 10 0.229 6664 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.62% 0.0027
21.489 5598.11 12.3 0.171 12.1 31.8 13.76 1.39%Sand-Slime Tailing 0.059 119.0 1.20 0.47 0.73 1 1.13 13.736 190.93 16.21 15 1.54% 2.7 47% 1.61 0.00 1.61 0 0.86 0.05 0.97 1.0 0.048 35.99 52.20 0.080 1.65 0.93 0.23 0.80 1.03 1.0 0.040 3.91 63.32 0.104 2.96 2.30 2 8.70 538 1.8E-03 5.3E+02 2.9E-04 10 0.229 6648 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.64% 0.0027
21.653 5597.95 9.4 0.173 9.0 70.1 30.36 1.84%Slime Tailings 0.057 113.1 1.21 0.47 0.74 1 1.13 10.141 140.96 12.35 11 2.11% 2.9 71% 1.62 0.00 1.62 0 0.86 0.05 0.97 1.0 0.048 34.39 46.74 0.074 1.54 0.93 0.20 0.80 1.03 1.0 0.040 5.44 67.21 0.108 3.07 2.31 2 8.75 538 1.8E-03 5.1E+02 3.1E-04 16 0.481 5466 0.08% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 2.06% 0.0034
21.817 5597.78 10.2 0.308 9.6 109.8 47.60 3.01%Slime Tailings 0.057 113.1 1.22 0.48 0.74 1 1.12 10.748 149.40 13.38 12 3.41% 3.0 71% 1.63 0.00 1.63 0 0.86 0.05 0.97 1.0 0.048 34.75 48.13 0.076 1.57 0.93 0.21 0.80 1.03 1.0 0.040 6.30 84.34 0.136 3.84 2.70 2 8.80 538 1.8E-03 5.1E+02 3.1E-04 16 0.481 5454 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.08% 0.0034
21.981 5597.62 16.3 0.494 15.9 55.4 24.01 3.04%Slime Tailings 0.057 113.1 1.23 0.48 0.75 1 1.12 17.829 247.82 21.16 20 3.28% 2.8 71% 1.63 0.00 1.63 0 0.86 0.05 0.97 1.0 0.048 37.46 58.61 0.086 1.80 0.93 0.27 0.80 1.03 1.0 0.040 4.58 96.83 0.164 4.62 3.21 2 8.85 538 1.8E-03 5.1E+02 3.1E-04 16 0.481 5441 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.11% 0.0035
22.145 5597.45 14.7 0.580 14.5 37.9 16.40 3.94%Slime Tailings 0.057 113.1 1.24 0.49 0.75 1 1.11 16.127 224.17 19.04 18 4.31% 2.9 71% 1.64 0.00 1.64 0 0.86 0.05 0.97 1.0 0.048 36.72 55.75 0.083 1.74 0.93 0.25 0.80 1.03 1.0 0.040 5.59 106.43 0.192 5.37 3.55 2 8.90 538 1.8E-03 5.1E+02 3.2E-04 16 0.482 5428 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.13% 0.0035
22.309 5597.29 15.8 0.533 15.5 43.5 18.86 3.38%Slime Tailings 0.057 113.1 1.25 0.49 0.75 1 1.11 17.189 238.93 20.31 19 3.67% 2.8 71% 1.65 0.00 1.65 0 0.86 0.05 0.97 1.0 0.048 37.16 57.48 0.085 1.78 0.93 0.26 0.80 1.03 1.0 0.040 4.97 100.99 0.176 4.89 3.33 2 8.95 538 1.8E-03 5.1E+02 3.2E-04 16 0.482 5416 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.15% 0.0035
22.473 5597.13 14.0 0.457 13.9 15.6 6.74 3.26%Slime Tailings 0.057 113.1 1.26 0.50 0.76 1 1.10 15.381 213.79 17.99 17 3.58% 2.9 71% 1.66 0.00 1.66 0 0.86 0.05 0.97 1.0 0.048 36.35 54.34 0.082 1.71 0.93 0.24 0.80 1.03 1.0 0.040 5.32 95.70 0.162 4.47 3.09 2 9.00 538 1.8E-03 5.1E+02 3.2E-04 16 0.482 5403 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.17% 0.0036
22.638 5596.96 22.3 0.455 22.1 22.5 9.75 2.04%Sand-Slime Tailing 0.059 119.0 1.27 0.50 0.76 1 1.09 24.213 336.55 28.30 28 2.17% 2.6 47% 1.67 0.00 1.67 0 0.85 0.06 0.96 1.0 0.048 40.23 68.53 0.098 2.06 0.93 0.31 0.80 1.02 1.0 0.040 3.07 87.01 0.141 3.89 2.97 2 9.05 538 1.8E-03 5.3E+02 3.0E-04 10 0.232 6538 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.79% 0.0029
22.802 5596.80 17.6 0.383 17.4 21.7 9.38 2.18%Sand-Slime Tailing 0.059 119.0 1.28 0.51 0.77 1 1.09 19.057 264.90 22.31 21 2.35% 2.7 47% 1.68 0.00 1.68 0 0.85 0.05 0.96 1.0 0.048 38.12 60.43 0.088 1.86 0.93 0.27 0.80 1.02 1.0 0.040 3.78 84.25 0.136 3.71 2.78 2 9.10 538 1.8E-03 5.3E+02 3.1E-04 10 0.232 6523 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.82% 0.0030
22.966 5596.63 11.2 0.327 10.7 70.0 30.33 2.93%Slime Tailings 0.057 113.1 1.28 0.51 0.77 1 1.09 11.705 162.70 14.15 13 3.31% 2.9 71% 1.69 0.00 1.69 0 0.85 0.05 0.97 1.0 0.048 35.01 49.16 0.077 1.61 0.93 0.22 0.80 1.02 1.0 0.040 6.03 85.32 0.138 3.75 2.68 2 9.15 538 1.8E-03 5.1E+02 3.2E-04 16 0.483 5365 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.25% 0.0037
23.130 5596.47 11.9 0.236 11.3 90.3 39.11 1.99%Sand-Slime Tailing 0.059 119.0 1.29 0.52 0.78 1 1.08 12.269 170.54 14.96 14 2.23% 2.8 47% 1.70 0.00 1.70 0 0.85 0.05 0.97 1.0 0.048 35.55 50.51 0.078 1.64 0.93 0.22 0.80 1.02 1.0 0.040 4.90 73.26 0.117 3.16 2.40 2 9.20 538 1.8E-03 5.3E+02 3.1E-04 10 0.233 6492 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.86% 0.0031
23.294 5596.31 13.5 0.214 12.9 103.9 45.01 1.59%Sand-Slime Tailing 0.059 119.0 1.30 0.52 0.78 1 1.08 13.874 192.85 16.93 16 1.75% 2.7 47% 1.71 0.00 1.71 0 0.85 0.05 0.97 1.0 0.047 36.24 53.17 0.081 1.70 0.93 0.24 0.80 1.02 1.0 0.040 4.04 68.45 0.110 2.96 2.33 2 9.25 538 1.8E-03 5.3E+02 3.1E-04 10 0.233 6477 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.88% 0.0031
23.458 5596.14 12.3 0.222 11.8 82.8 35.86 1.80%Sand-Slime Tailing 0.059 119.0 1.31 0.53 0.79 1 1.07 12.714 176.73 15.41 14 2.01% 2.8 47% 1.72 0.00 1.72 0 0.85 0.05 0.97 1.0 0.047 35.71 51.12 0.079 1.66 0.93 0.23 0.80 1.02 1.0 0.040 4.60 70.84 0.113 3.04 2.35 2 9.30 538 1.8E-03 5.3E+02 3.1E-04 10 0.233 6462 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.91% 0.0031
23.622 5595.98 10.7 0.234 10.1 92.5 40.09 2.19%Slime Tailings 0.057 113.1 1.32 0.53 0.79 1 1.07 10.821 150.41 13.29 12 2.50% 2.9 71% 1.73 0.00 1.73 0 0.85 0.05 0.97 1.0 0.047 34.71 48.00 0.076 1.60 0.92 0.21 0.80 1.02 1.0 0.040 5.61 74.52 0.118 3.17 2.38 2 9.35 538 1.8E-03 5.1E+02 3.3E-04 16 0.485 5316 0.09% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.34% 0.0038
23.786 5595.81 17.2 0.313 16.6 101.1 43.81 1.82%Sand-Slime Tailing 0.059 119.0 1.33 0.54 0.79 1 1.07 17.630 245.06 21.26 20 1.98% 2.6 47% 1.74 0.00 1.74 0 0.85 0.05 0.96 1.0 0.047 37.76 59.01 0.087 1.84 0.92 0.27 0.80 1.02 1.0 0.040 3.63 77.06 0.123 3.27 2.56 2 9.40 538 1.8E-03 5.3E+02 3.2E-04 10 0.234 6432 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.95% 0.0032
23.950 5595.65 18.0 0.305 17.9 11.3 4.88 1.70%Sand-Slime Tailing 0.059 119.0 1.34 0.54 0.80 1 1.06 18.952 263.44 22.10 21 1.84% 2.6 47% 1.75 0.00 1.75 0 0.84 0.05 0.96 1.0 0.047 38.05 60.15 0.088 1.88 0.92 0.27 0.80 1.02 1.0 0.040 3.41 75.45 0.120 3.18 2.53 2 9.45 538 1.8E-03 5.3E+02 3.2E-04 10 0.234 6417 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.97% 0.0032
24.114 5595.49 13.6 0.288 13.4 40.7 17.64 2.12%Sand-Slime Tailing 0.059 119.0 1.35 0.55 0.80 1 1.06 14.105 196.06 16.69 15 2.35% 2.8 47% 1.76 0.00 1.76 0 0.84 0.05 0.96 1.0 0.047 36.16 52.85 0.080 1.71 0.92 0.24 0.80 1.01 1.0 0.040 4.66 77.81 0.124 3.27 2.49 2 9.50 538 1.8E-03 5.3E+02 3.2E-04 10 0.235 6403 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 2.00% 0.0033
24.278 5595.32 19.1 0.356 18.5 95.5 41.38 1.87%Sand-Slime Tailing 0.059 119.0 1.36 0.55 0.81 1 1.05 19.383 269.43 23.24 22 2.01% 2.6 47% 1.77 0.00 1.77 1 0.84 0.05 0.96 1.0 0.047 38.45 61.69 0.090 1.92 0.92 0.28 0.80 1.01 1.0 0.040 3.44 79.99 0.128 3.35 2.63 2 9.55 538 1.8E-03 5.3E+02 3.2E-04 10 0.235 6392 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 2.02% 0.0033
24.442 5595.16 19.8 0.406 19.6 24.9 10.80 2.05%Sand-Slime Tailing 0.059 119.0 1.37 0.56 0.81 1 1.05 20.495 284.88 23.99 23 2.21% 2.6 47% 1.78 0.01 1.77 1 0.84 0.06 0.96 1.0 0.047 38.72 62.71 0.091 1.94 0.92 0.28 0.80 1.01 1.0 0.040 3.52 84.43 0.136 3.55 2.74 2 9.60 538 1.8E-03 5.3E+02 3.2E-04 10 0.235 6385 0.08% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 2.05% 0.0034
24.606 5594.99 17.4 0.456 17.3 12.2 5.27 2.62%Slime Tailings 0.057 113.1 1.38 0.56 0.82 1 1.04 18.050 250.89 21.06 20 2.85% 2.7 71% 1.79 0.01 1.78 1 0.84 0.05 0.96 1.0 0.047 37.42 58.48 0.086 1.84 0.92 0.26 0.80 1.01 1.0 0.040 4.35 91.61 0.151 3.92 2.88 2 9.65 538 1.8E-03 5.1E+02 3.4E-04 16 0.486 5260 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.49% 0.0041
24.770 5594.83 12.0 0.315 11.9 21.2 9.17 2.62%Slime Tailings 0.057 113.1 1.39 0.57 0.82 1 1.04 12.353 171.70 14.51 13 2.96% 2.9 71% 1.80 0.02 1.78 1 0.84 0.05 0.96 1.0 0.047 35.14 49.65 0.077 1.64 0.92 0.22 0.80 1.01 1.0 0.040 5.71 82.84 0.133 3.42 2.53 2 9.70 594 1.8E-03 6.2E+02 2.8E-04 16 0.486 5254 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.56% 0.0026
24.934 5594.67 10.2 0.249 9.9 49.0 21.21 2.45%Slime Tailings 0.057 113.1 1.40 0.58 0.83 1 1.03 10.195 141.71 12.21 11 2.84% 3.0 71% 1.81 0.02 1.78 1 0.84 0.05 0.97 1.0 0.047 34.34 46.55 0.074 1.57 0.91 0.20 0.80 1.01 1.0 0.040 6.33 77.25 0.123 3.14 2.36 2 9.75 594 1.8E-03 6.2E+02 2.8E-04 16 0.486 5249 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.58% 0.0026
25.098 5594.50 10.1 0.244 9.6 79.6 34.51 2.41%Slime Tailings 0.057 113.1 1.41 0.58 0.83 1 1.03 9.897 137.57 12.09 10 2.81% 3.0 71% 1.82 0.03 1.79 1 0.83 0.05 0.97 1.0 0.047 34.30 46.39 0.074 1.57 0.91 0.20 0.80 1.01 1.0 0.041 6.34 76.70 0.122 3.10 2.33 2 9.80 594 1.8E-03 6.2E+02 2.9E-04 16 0.486 5244 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.60% 0.0026
25.262 5594.34 14.2 0.261 14.1 10.4 4.50 1.84%Sand-Slime Tailing 0.059 119.0 1.42 0.59 0.83 1 1.03 14.489 201.40 16.91 15 2.04% 2.7 47% 1.83 0.03 1.79 1 0.83 0.05 0.96 1.0 0.047 36.23 53.14 0.081 1.71 0.91 0.24 0.80 1.01 1.0 0.041 4.37 73.93 0.118 2.97 2.34 2 9.85 594 1.8E-03 6.5E+02 2.7E-04 10 0.236 6353 0.05% 2.00 0.65 0.03% 0.008 0.34 0.079 0.765 1.27% 0.0021
25.426 5594.17 14.1 0.415 13.8 52.2 22.60 2.93%Slime Tailings 0.057 113.1 1.43 0.59 0.84 1 1.02 14.116 196.21 16.78 15 3.26% 2.9 71% 1.83 0.04 1.80 1 0.83 0.05 0.96 1.0 0.047 35.93 52.71 0.080 1.70 0.91 0.24 0.80 1.01 1.0 0.041 5.42 91.00 0.150 3.76 2.73 2 9.90 594 1.8E-03 6.2E+02 2.9E-04 16 0.487 5234 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.64% 0.0027
25.590 5594.01 15.1 0.371 15.0 20.2 8.75 2.46%Slime Tailings 0.057 113.1 1.44 0.60 0.84 1 1.02 15.231 211.72 17.84 16 2.72% 2.8 71% 1.84 0.04 1.80 1 0.83 0.05 0.96 1.0 0.047 36.30 54.14 0.082 1.73 0.91 0.24 0.80 1.00 1.0 0.041 4.79 85.43 0.138 3.44 2.58 2 9.95 594 1.8E-03 6.2E+02 2.9E-04 16 0.487 5229 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.66% 0.0027
25.754 5593.85 12.5 0.387 12.0 70.3 30.45 3.10%Slime Tailings 0.057 113.1 1.45 0.60 0.85 1 1.01 12.203 169.62 14.69 13 3.51% 2.9 71% 1.85 0.05 1.80 1 0.83 0.05 0.96 1.0 0.047 35.20 49.89 0.077 1.63 0.91 0.22 0.80 1.00 1.0 0.041 6.13 90.06 0.148 3.67 2.65 2 10.00 594 1.8E-03 6.2E+02 2.9E-04 16 0.487 5224 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.68% 0.0028
25.918 5593.68 15.4 0.224 15.0 51.8 22.46 1.46%Sand-Slime Tailing 0.059 119.0 1.46 0.61 0.85 1 1.01 15.169 210.85 18.00 16 1.61% 2.7 47% 1.86 0.05 1.81 1 0.83 0.05 0.96 1.0 0.047 36.61 54.61 0.082 1.73 0.91 0.24 0.80 1.00 1.0 0.041 3.79 68.14 0.109 2.69 2.21 2 10.05 594 1.8E-03 6.5E+02 2.8E-04 10 0.236 6328 0.05% 2.00 0.65 0.03% 0.009 0.34 0.079 0.765 1.34% 0.0022
26.082 5593.52 20.6 0.226 20.5 15.0 6.51 1.10%Sand-Slime Tailing 0.059 119.0 1.47 0.61 0.86 1 1.00 20.609 286.46 24.05 22 1.18% 2.5 47% 1.87 0.06 1.81 1 0.83 0.06 0.96 1.0 0.047 38.73 62.78 0.091 1.92 0.90 0.28 0.80 1.00 1.0 0.041 2.68 64.55 0.105 2.57 2.25 2 10.10 594 1.8E-03 6.5E+02 2.8E-04 10 0.236 6321 0.05% 2.00 0.65 0.03% 0.009 0.34 0.079 0.765 1.36% 0.0022
26.246 5593.35 17.9 0.228 17.7 30.6 13.24 1.27%Sand-Slime Tailing 0.059 119.0 1.48 0.62 0.86 1 1.00 17.733 246.48 20.82 19 1.39% 2.6 47% 1.88 0.06 1.82 1 0.82 0.05 0.96 1.0 0.047 37.60 58.42 0.086 1.82 0.90 0.26 0.80 1.00 1.0 0.041 3.20 66.52 0.107 2.61 2.21 2 10.15 594 1.8E-03 6.5E+02 2.8E-04 10 0.237 6315 0.05% 2.00 0.65 0.03% 0.009 0.34 0.079 0.765 1.38% 0.0023
26.410 5593.19 13.3 0.303 13.1 41.9 18.16 2.27%Slime Tailings 0.057 113.1 1.49 0.62 0.86 1 1.00 13.030 181.12 15.44 14 2.56% 2.8 71% 1.89 0.07 1.82 1 0.82 0.05 0.96 1.0 0.048 35.46 50.90 0.078 1.65 0.90 0.23 0.80 1.00 1.0 0.041 5.18 79.94 0.128 3.08 2.36 2 10.20 594 1.8E-03 6.2E+02 3.0E-04 16 0.488 5203 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.76% 0.0029
26.574 5593.03 12.3 0.204 11.9 75.2 32.58 1.65%Sand-Slime Tailing 0.059 119.0 1.50 0.63 0.87 1 0.99 11.774 163.66 14.22 12 1.88% 2.8 47% 1.90 0.07 1.83 1 0.82 0.05 0.96 1.0 0.048 35.29 49.50 0.077 1.62 0.90 0.22 0.80 1.00 1.0 0.041 4.83 68.70 0.110 2.64 2.13 2 10.25 594 1.8E-03 6.5E+02 2.8E-04 10 0.237 6302 0.06% 2.00 0.65 0.03% 0.009 0.34 0.079 0.765 1.42% 0.0023
26.739 5592.86 21.0 0.154 20.8 25.1 10.86 0.73%Sand-Slime Tailing 0.059 119.0 1.51 0.63 0.87 1 0.99 20.610 286.48 24.12 22 0.79% 2.4 47% 1.91 0.08 1.83 1 0.82 0.06 0.96 1.0 0.047 38.76 62.88 0.091 1.92 0.90 0.28 0.80 1.00 1.0 0.041 2.30 55.56 0.096 2.29 2.10 2 10.30 594 1.8E-03 6.5E+02 2.9E-04 10 0.237 6295 0.06% 2.00 0.65 0.03% 0.009 0.34 0.079 0.765 1.44% 0.0024
26.903 5592.70 21.7 0.157 21.6 16.6 7.20 0.72%Sand-Slime Tailing 0.059 119.0 1.51 0.64 0.88 1 0.99 21.287 295.89 24.84 23 0.78% 2.4 47% 1.92 0.08 1.84 1 0.82 0.06 0.96 1.0 0.047 39.01 63.86 0.092 1.94 0.90 0.29 0.80 1.00 1.0 0.042 2.24 55.75 0.096 2.28 2.11 2 10.35 594 1.8E-03 6.5E+02 2.9E-04 10 0.237 6289 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.46% 0.0024
27.067 5592.53 21.5 0.222 21.4 21.0 9.11 1.03%Sand-Slime Tailing 0.059 119.0 1.52 0.64 0.88 1 0.98 20.946 291.15 24.48 23 1.11% 2.5 47% 1.93 0.09 1.84 1 0.82 0.06 0.96 1.0 0.047 38.89 63.36 0.092 1.93 0.90 0.29 0.80 0.99 1.0 0.042 2.60 63.68 0.104 2.45 2.19 2 10.40 594 1.8E-03 6.5E+02 2.9E-04 10 0.237 6282 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.48% 0.0024
27.231 5592.37 20.3 0.256 20.2 23.1 10.02 1.26%Sand-Slime Tailing 0.059 119.0 1.53 0.65 0.89 1 0.98 19.734 274.30 23.08 21 1.36% 2.5 47% 1.94 0.09 1.85 1 0.82 0.05 0.96 1.0 0.048 38.40 61.48 0.090 1.88 0.90 0.28 0.80 0.99 1.0 0.042 2.95 68.20 0.110 2.56 2.22 2 10.45 594 1.8E-03 6.5E+02 2.9E-04 10 0.237 6276 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.50% 0.0025
27.395 5592.21 26.5 0.406 26.3 23.6 10.23 1.53%Sand-Slime Tailing 0.059 119.0 1.54 0.65 0.89 1 0.97 25.657 356.63 29.97 28 1.63% 2.5 47% 1.95 0.10 1.85 1 0.82 0.06 0.96 1.0 0.047 40.81 70.78 0.101 2.12 0.89 0.32 0.80 0.99 1.0 0.042 2.66 79.84 0.127 2.96 2.54 2 10.50 594 1.8E-03 6.5E+02 2.9E-04 10 0.238 6269 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.52% 0.0025
27.559 5592.04 19.7 0.516 19.6 24.8 10.73 2.61%Sand-Slime Tailing 0.059 119.0 1.55 0.66 0.90 1 0.97 18.972 263.71 22.21 20 2.84% 2.7 47% 1.96 0.10 1.86 1 0.81 0.05 0.96 1.0 0.048 38.09 60.30 0.088 1.85 0.89 0.27 0.80 0.99 1.0 0.042 4.26 94.50 0.158 3.66 2.76 2 10.55 594 1.8E-03 6.5E+02 2.9E-04 10 0.238 6263 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.54% 0.0025
27.723 5591.88 15.4 0.486 15.2 25.6 11.08 3.16%Slime Tailings 0.057 113.1 1.56 0.66 0.90 1 0.97 14.708 204.44 17.26 15 3.51% 2.9 71% 1.97 0.11 1.86 1 0.81 0.05 0.96 1.0 0.048 36.10 53.36 0.081 1.69 0.89 0.24 0.80 0.99 1.0 0.042 5.57 96.13 0.163 3.73 2.71 2 10.60 594 1.8E-03 6.2E+02 3.1E-04 16 0.489 5160 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.93% 0.0032
27.887 5591.71 13.0 0.486 12.8 45.1 19.56 3.73%Slime Tailings 0.057 113.1 1.57 0.67 0.91 1 0.96 12.270 170.56 14.57 13 4.24% 3.0 71% 1.98 0.12 1.86 1 0.81 0.05 0.96 1.0 0.048 35.16 49.73 0.077 1.61 0.89 0.22 0.80 0.99 1.0 0.042 6.77 98.65 0.169 3.87 2.74 2 10.65 594 1.8E-03 6.2E+02 3.1E-04 16 0.489 5156 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.95% 0.0032
28.051 5591.55 11.8 0.486 11.3 75.6 32.75 4.13%Slime Tailings 0.057 113.1 1.58 0.67 0.91 1 0.96 10.818 150.37 13.09 11 4.77% 3.1 71% 1.99 0.12 1.87 1 0.81 0.05 0.96 1.0 0.048 34.65 47.74 0.075 1.57 0.89 0.21 0.80 0.99 1.0 0.042 7.64 100.00 0.173 3.93 2.75 2 10.70 594 1.8E-03 6.2E+02 3.1E-04 16 0.489 5151 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.97% 0.0032
29.200 5590.40 Slime Tailings 0.057 113.1 2.05 0.14 1.91 1 11.05 594 1.8E-03 6.2E+02 3.2E-04 16 0.490 5098 0.08%2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.10% 0.0241
Extra layer added to analyze seismic settlement of tailings below the bottom of CPT investigation.
Liquef_SeismicSettle_30Aug2015.xls Page 15 of 29
Energy Fuels Resources (USA) Inc.White Mesa Mill
Seismic Settlement Analyses
Data File: 13-52106_SP2E1-BSC-CPT 5613.10 Water surface elevation during CPT investigation (ft a 5619.95 Ground Surface Elevation at time of CPT (ft amsl)
Location: White Mesa 2013 CPT Investigation 0.15 5611.67 Water surface elevation at t0 (ft amsl)5630.46 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl)
..\..\..\6.2.3 Field Data\2013 Field Investigation\Conetec Dat 5.5 5595.46 Water surface elevation at t1 (ft amsl) 0.50 Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after place ###### 5630.21 5629.96 0.50 0.055 110 0.028 0.014 0.00 0.00 0.028 0.014 0.08 508 1.7E-03 4.4E+02 3.0E-06 11 0.068 46696 0.00% 1.20 0.80 0.04% 0.000 0.32 0.133 0.778 0.00% 0.0000
Tailings Sands 1.69 5590.46 Water surface elevation at t2 (ft amsl)3.50 Thickness of Water Storage/Rooting Zone (ft)###### 5628.21 5626.46 3.50 0.054 107 0.215 0.121 0.00 0.00 0.215 0.121 0.69 508 1.7E-03 4.3E+02 2.8E-05 11 0.118 18930 0.00% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
Tailings Sand-Slimes 4.00 Thickness of High Compaction Layer (ft)###### 5624.46 5622.46 4.00 0.060 120 0.454 0.334 0.00 0.00 0.454 0.334 1.83 508 1.9E-03 4.8E+02 6.8E-05 11 0.153 12419 0.01% 0.65 0.75 0.02% 0.000 0.34 0.079 0.765 0.00% 0.0000
Tailings Slimes 1.44 2.51 Thickness of Random/Platform Fill on on top of existing interim cover (ft) ###### 5621.21 5619.95 2.51 0.050 101 0.580 0.517 0.00 0.00 0.580 0.517 2.82 508 1.6E-03 4.0E+02 1.2E-04 11 0.171 10362 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
Interim Cover 0.47 1160.95 Additional Stress due to Final Cover Placement, ΔσFC (psf)
Cells Requiring User Input/Manipulation 2.21 2.21 7.51 5590.46 Elevation of bottom of tailings (liner) (ft amsl)
0.468
rd Cσ Kσ Ka rd Dr f Kσ Ka Avg
(ft) (ft amsl) TSF TSF TSF (ft) PSI (%) (tcf) (pcf) (tsf)(tsf)(tsf) 1=Yes TSF MPa % (tsf)(tsf)(tsf) 1=Yes FoS m
0=No 0=No (ft/sec) (tcf) tsf tsf (%)
0.164 5619.79 13.5 0.057 13.5 -0.0 -0.01 0.42%Interim Cover 0.050 100.7 0.01 0.00 0.01 0 1.70 22.933 318.77 26.63 1632 0.42% 0.9 51% 0.59 0.00 0.59 0 1.00 0.06 1.02 1.0 0.059 39.67 66.30 0.095 1.61 0.98 0.30 0.80 2.53 1.0 0.017 1.00 26.63 0.072 174.99 88.30 2 3.25 594 1.6E-03 5.5E+02 1.0E-04 11 0.177 9820 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
0.328 5619.62 36.9 0.160 36.9 0.1 0.05 0.43%Interim Cover 0.050 100.7 0.02 0.00 0.02 0 1.70 62.713 871.71 72.84 2232 0.43% 0.9 51% 0.60 0.00 0.60 0 1.00 0.09 1.03 1.0 0.060 55.88 128.72 0.200 3.35 0.97 0.49 0.75 2.65 1.0 0.016 1.00 72.84 0.116 140.58 71.97 2 3.30 594 1.6E-03 5.5E+02 1.1E-04 11 0.178 9763 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
0.492 5619.46 45.5 0.725 45.5 0.2 0.09 1.59%Interim Cover 0.050 100.7 0.02 0.00 0.02 0 1.70 77.333 1074.93 89.82 1834 1.59% 1.4 51% 0.61 0.00 0.61 0 1.00 0.10 1.03 1.0 0.060 61.84 151.66 0.279 4.67 0.97 0.55 0.73 2.64 1.0 0.016 1.00 89.82 0.147 119.19 61.93 2 3.35 594 1.6E-03 5.5E+02 1.1E-04 11 0.178 9708 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
0.656 5619.29 78.6 0.721 78.6 0.4 0.19 0.92%Interim Cover 0.050 100.7 0.03 0.00 0.03 0 1.70 133.671 1858.03 155.26 2379 0.92% 1.2 51% 0.61 0.00 0.61 0 1.00 0.17 1.06 1.0 0.061 84.80 240.06 1.000 16.37 0.97 0.72 0.64 3.23 1.0 0.013 1.00 155.26 0.428 259.71 138.04 2 3.40 594 1.6E-03 5.5E+02 1.1E-04 11 0.179 9653 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
0.820 5619.13 133.5 1.017 133.5 1.1 0.48 0.76%Interim Cover 0.050 100.7 0.04 0.00 0.04 0 1.70 226.865 3153.42 263.50 3230 0.76% 1.1 51% 0.62 0.00 0.62 0 1.00 0.30 1.10 1.0 0.063 122.79 386.30 1.000 15.76 0.97 0.94 0.60 3.37 1.0 0.013 1.00 263.50 1.000 485.59 250.68 2 3.45 594 1.6E-03 5.5E+02 1.1E-04 11 0.180 9600 0.01%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
0.984 5618.97 159.6 1.857 159.6 1.1 0.48 1.16%Interim Cover 0.050 100.7 0.05 0.00 0.05 0 1.70 271.388 3772.29 315.21 3220 1.16% 1.3 51% 0.63 0.00 0.63 0 1.00 0.30 1.09 1.0 0.063 140.94 456.15 1.000 15.82 0.97 1.03 0.60 3.13 1.0 0.014 1.00 315.21 1.000 404.82 210.32 2 3.50 594 1.6E-03 5.5E+02 1.1E-04 11 0.180 9547 0.01%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.148 5618.80 202.0 1.570 202.0 1.5 0.66 0.78%Interim Cover 0.050 100.7 0.06 0.00 0.06 0 1.70 343.332 4772.31 398.78 3491 0.78% 1.1 51% 0.64 0.00 0.64 0 1.00 0.30 1.09 1.0 0.063 170.26 569.04 1.000 15.87 0.97 1.15 0.60 2.95 1.0 0.015 1.00 398.78 1.000 347.12 181.50 2 3.55 594 1.6E-03 5.5E+02 1.1E-04 11 0.181 9496 0.01%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.312 5618.64 282.1 2.962 282.1 2.0 0.85 1.05%Interim Cover 0.050 100.7 0.07 0.00 0.07 0 1.70 479.536 6665.55 556.98 4267 1.05% 1.3 51% 0.65 0.00 0.65 0 1.00 0.30 1.09 1.0 0.063 225.78 782.76 1.000 15.93 0.97 1.36 0.60 2.79 1.0 0.015 1.00 556.98 1.000 303.85 159.89 2 3.60 594 1.6E-03 5.5E+02 1.1E-04 11 0.182 9445 0.01%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.476 5618.47 258.6 3.915 258.6 2.8 1.19 1.51%Interim Cover 0.050 100.7 0.07 0.00 0.07 0 1.70 439.552 6109.77 510.55 3477 1.51% 1.4 51% 0.65 0.00 0.65 0 1.00 0.30 1.08 1.0 0.063 209.49 720.03 1.000 15.99 0.97 1.30 0.60 2.66 1.0 0.016 1.00 510.55 1.000 270.20 143.09 2 3.65 594 1.6E-03 5.5E+02 1.2E-04 11 0.182 9395 0.02%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.640 5618.31 203.5 4.263 203.5 3.0 1.31 2.09%Interim Cover 0.050 100.7 0.08 0.00 0.08 0 1.70 345.933 4808.47 401.82 2462 2.10% 1.5 51% 0.66 0.00 0.66 0 1.00 0.30 1.08 1.0 0.062 171.33 573.15 1.000 16.04 0.97 1.16 0.60 2.55 1.0 0.017 1.00 401.82 1.000 243.27 129.66 2 3.70 594 1.6E-03 5.5E+02 1.2E-04 11 0.183 9347 0.02%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.804 5618.15 196.8 3.157 196.7 3.4 1.46 1.60%Interim Cover 0.050 100.7 0.09 0.00 0.09 0 1.70 334.441 4648.73 388.47 2164 1.61% 1.4 51% 0.67 0.00 0.67 0 1.00 0.30 1.07 1.0 0.062 166.65 555.12 1.000 16.10 0.97 1.14 0.60 2.46 1.0 0.017 1.00 388.47 1.000 221.25 118.67 2 3.75 594 1.6E-03 5.5E+02 1.2E-04 11 0.183 9299 0.02%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.968 5617.98 198.9 2.435 198.9 3.1 1.34 1.22%Interim Cover 0.050 100.7 0.10 0.00 0.10 0 1.70 338.113 4699.77 392.74 2005 1.22% 1.3 51% 0.68 0.00 0.68 0 1.00 0.30 1.07 1.0 0.062 168.14 560.88 1.000 16.17 0.97 1.14 0.60 2.37 1.0 0.018 1.00 392.74 1.000 202.89 109.53 2 3.80 594 1.6E-03 5.5E+02 1.2E-04 11 0.184 9252 0.02%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.133 5617.82 169.5 1.671 169.5 3.4 1.46 0.99%Interim Cover 0.050 100.7 0.11 0.00 0.11 0 1.70 288.167 4005.52 334.73 1578 0.99% 1.2 51% 0.69 0.00 0.69 0 1.00 0.30 1.07 1.0 0.062 147.79 482.52 1.000 16.23 0.97 1.06 0.60 2.30 1.0 0.019 1.00 334.73 1.000 187.35 101.79 2 3.85 594 1.6E-03 5.5E+02 1.2E-04 11 0.184 9205 0.02%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.297 5617.65 152.5 1.369 152.5 3.4 1.45 0.90%Interim Cover 0.050 100.7 0.12 0.00 0.12 0 1.70 258.952 3599.44 300.80 1318 0.90% 1.2 51% 0.70 0.00 0.70 0 1.00 0.30 1.06 1.0 0.061 135.88 436.68 1.000 16.30 0.97 1.00 0.60 2.23 1.0 0.019 1.00 300.80 1.000 174.04 95.17 2 3.90 594 1.6E-03 5.5E+02 1.2E-04 11 0.185 9160 0.02%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.461 5617.49 96.6 1.501 96.6 1.4 0.60 1.55%Interim Cover 0.050 100.7 0.12 0.00 0.12 0 1.70 164.203 2282.42 190.73 779 1.56% 1.5 51% 0.70 0.00 0.70 0 1.00 0.24 1.05 1.0 0.060 97.25 287.98 1.000 16.57 0.97 0.80 0.60 2.17 1.0 0.020 1.00 190.73 1.000 162.50 89.54 2 3.95 594 1.6E-03 5.5E+02 1.2E-04 11 0.186 9115 0.02%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.625 5617.33 111.8 1.580 111.8 1.3 0.55 1.41%Interim Cover 0.050 100.7 0.13 0.00 0.13 0 1.70 190.060 2641.83 220.76 845 1.41% 1.5 51% 0.71 0.00 0.71 0 1.00 0.30 1.06 1.0 0.061 107.79 328.55 1.000 16.44 0.97 0.86 0.60 2.12 1.0 0.020 1.00 220.76 1.000 152.41 84.42 2 4.00 594 1.6E-03 5.5E+02 1.3E-04 11 0.186 9071 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.789 5617.16 136.8 1.973 136.8 1.2 0.50 1.44%Interim Cover 0.050 100.7 0.14 0.00 0.14 0 1.61 220.642 3066.92 256.28 973 1.44% 1.5 51% 0.72 0.00 0.72 0 0.99 0.30 1.05 1.0 0.061 120.26 376.53 1.000 16.51 0.97 0.92 0.60 2.07 1.0 0.021 1.00 256.28 1.000 143.50 80.00 2 4.05 594 1.6E-03 5.5E+02 1.3E-04 11 0.187 9028 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.953 5617.00 124.7 1.720 124.7 1.6 0.69 1.38%Interim Cover 0.050 100.7 0.15 0.00 0.15 0 1.64 204.705 2845.41 237.77 837 1.38% 1.5 51% 0.73 0.00 0.73 0 0.99 0.30 1.05 1.0 0.060 113.76 351.53 1.000 16.58 0.97 0.89 0.60 2.02 1.0 0.021 1.00 237.77 1.000 135.58 76.08 2 4.10 594 1.6E-03 5.5E+02 1.3E-04 11 0.187 8985 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
3.117 5616.83 124.7 1.712 124.7 1.4 0.61 1.37%Interim Cover 0.050 100.7 0.16 0.00 0.16 0 1.63 202.585 2815.93 235.31 793 1.37% 1.5 51% 0.74 0.00 0.74 0 0.99 0.30 1.05 1.0 0.060 112.90 348.20 1.000 16.64 0.97 0.89 0.60 1.98 1.0 0.022 1.00 235.31 1.000 128.49 72.57 2 4.15 495 1.6E-03 3.8E+02 1.9E-04 11 0.188 8943 0.03% 2.00 0.65 0.03% 0.002 0.34 0.079 0.765 0.24% 0.0004
3.281 5616.67 121.9 1.635 121.9 1.2 0.52 1.34%Sand Tailings 0.051 102.8 0.17 0.00 0.17 0 1.62 197.463 2744.73 229.35 736 1.34% 1.5 18% 0.75 0.00 0.75 0 0.99 0.30 1.04 1.0 0.060 80.72 310.08 1.000 16.71 0.97 0.87 0.60 1.93 1.0 0.022 1.00 229.35 1.000 121.99 69.35 2 4.20 495 1.6E-03 3.9E+02 1.9E-04 0 0.193 11508 0.04%2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.04% 0.0001
3.445 5616.51 125.5 1.702 125.5 0.9 0.41 1.36%Sand Tailings 0.051 102.8 0.17 0.00 0.17 0 1.59 199.479 2772.75 231.69 721 1.36% 1.5 18% 0.75 0.00 0.75 0 0.99 0.30 1.04 1.0 0.060 81.32 313.02 1.000 16.78 0.97 0.88 0.60 1.90 1.0 0.022 1.00 231.69 1.000 116.12 66.45 2 4.25 495 1.6E-03 3.9E+02 1.9E-04 0 0.193 11455 0.04%2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.04% 0.0001
3.609 5616.34 150.5 1.842 150.5 1.6 0.68 1.22%Sand Tailings 0.051 102.8 0.18 0.00 0.18 0 1.51 226.750 3151.82 263.37 825 1.22% 1.4 18% 0.76 0.00 0.76 0 0.99 0.30 1.04 1.0 0.059 89.42 352.79 1.000 16.85 0.97 0.94 0.60 1.86 1.0 0.023 1.00 263.37 1.000 110.79 63.82 2 4.30 495 1.6E-03 3.9E+02 1.9E-04 0 0.194 11403 0.04%2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.04% 0.0001
3.773 5616.18 107.6 1.906 107.6 1.3 0.56 1.77%Sand Tailings 0.051 102.8 0.19 0.00 0.19 0 1.63 175.430 2438.48 203.77 563 1.78% 1.6 18% 0.77 0.00 0.77 0 0.99 0.27 1.03 1.0 0.059 74.18 277.95 1.000 16.97 0.97 0.82 0.60 1.83 1.0 0.023 1.00 203.77 1.000 105.93 61.45 2 4.35 495 1.6E-03 3.9E+02 1.9E-04 0 0.194 11351 0.04%2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.05% 0.0001
3.937 5616.01 87.2 1.794 87.2 1.1 0.46 2.06%Sand-Slime Tailing 0.047 93.3 0.20 0.00 0.20 0 1.70 148.257 2060.77 172.20 439 2.06% 1.7 47% 0.78 0.00 0.78 0 0.99 0.20 1.02 1.0 0.058 90.70 262.90 1.000 17.16 0.97 0.76 0.62 1.74 1.0 0.024 1.07 183.75 1.000 101.89 59.52 2 4.40 495 1.4E-03 3.5E+02 2.1E-04 10 0.191 8976 0.04% 2.00 0.65 0.03% 0.005 0.34 0.079 0.765 0.83% 0.0014
4.101 5615.85 65.2 1.491 65.2 1.0 0.41 2.29%Sand-Slime Tailing 0.047 93.3 0.21 0.00 0.21 0 1.70 110.823 1540.44 128.73 315 2.29% 1.9 47% 0.79 0.00 0.79 0 0.99 0.13 1.01 1.0 0.058 75.45 204.17 1.000 17.30 0.97 0.66 0.67 1.60 1.0 0.027 1.15 147.94 0.381 37.40 27.35 2 4.45 495 1.4E-03 3.5E+02 2.2E-04 10 0.191 8939 0.04% 2.00 0.65 0.03% 0.006 0.34 0.079 0.765 0.87% 0.0014
4.265 5615.68 46.2 1.366 46.2 0.5 0.23 2.96%Sand-Slime Tailing 0.047 93.3 0.21 0.00 0.21 0 1.70 78.506 1091.23 91.19 215 2.97% 2.0 47% 0.79 0.00 0.79 0 0.99 0.10 1.01 1.0 0.058 62.28 153.47 0.288 5.01 0.97 0.55 0.72 1.47 1.0 0.029 1.36 123.57 0.255 24.18 14.60 2 4.50 495 1.4E-03 3.5E+02 2.2E-04 10 0.192 8904 0.04% 2.00 0.65 0.03% 0.006 0.34 0.079 0.765 0.90% 0.0015
4.429 5615.52 32.1 1.104 32.1 0.4 0.18 3.44%Slime Tailings 0.041 82.7 0.22 0.00 0.22 0 1.70 54.519 757.81 63.33 144 3.47% 2.2 71% 0.80 0.00 0.80 0 0.99 0.08 1.01 1.0 0.057 52.14 115.47 0.170 2.97 0.97 0.46 0.77 1.37 1.0 0.031 1.65 104.62 0.186 17.12 10.04 2 4.55 495 1.3E-03 3.1E+02 2.5E-04 16 0.444 7299 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.70% 0.0028
4.593 5615.36 21.5 0.652 21.5 -0.3 -0.13 3.03%Slime Tailings 0.041 82.7 0.23 0.00 0.23 0 1.70 36.601 508.75 42.51 94 3.06% 2.3 71% 0.81 0.00 0.81 0 0.98 0.07 1.00 1.0 0.057 44.89 87.40 0.123 2.15 0.96 0.38 0.80 1.31 1.0 0.033 1.86 78.93 0.126 11.20 6.68 2 4.60 495 1.3E-03 3.1E+02 2.5E-04 16 0.445 7273 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.73% 0.0028
4.757 5615.19 14.9 0.336 15.0 -0.3 -0.11 2.25%Sand-Slime Tailing 0.047 93.3 0.23 0.00 0.23 0 1.70 25.415 353.27 29.51 63 2.28% 2.3 47% 0.82 0.00 0.82 0 0.98 0.06 1.00 1.0 0.057 40.65 70.17 0.100 1.75 0.96 0.31 0.80 1.30 1.0 0.033 1.95 57.54 0.098 8.43 5.09 2 4.65 495 1.4E-03 3.5E+02 2.2E-04 10 0.193 8807 0.04% 2.00 0.65 0.03% 0.006 0.34 0.079 0.765 0.99% 0.0016
4.921 5615.03 12.8 0.162 12.8 2.1 0.92 1.27%Sand-Slime Tailing 0.047 93.3 0.24 0.00 0.24 0 1.70 21.675 301.28 25.20 52 1.29% 2.2 47% 0.82 0.00 0.82 0 0.98 0.06 1.00 1.0 0.057 39.14 64.34 0.093 1.63 0.96 0.29 0.80 1.29 1.0 0.033 1.68 42.30 0.085 7.12 4.37 2 4.70 495 1.4E-03 3.5E+02 2.3E-04 10 0.193 8773 0.05% 2.00 0.65 0.03% 0.007 0.34 0.079 0.765 1.02% 0.0017
5.085 5614.86 42.1 0.172 42.1 8.1 3.53 0.41%Sand Tailings 0.051 102.8 0.25 0.00 0.25 0 1.70 71.536 994.35 83.19 167 0.41% 1.5 18% 0.83 0.00 0.83 0 0.98 0.09 1.00 1.0 0.057 43.36 126.54 0.194 3.41 0.96 0.53 0.74 1.38 1.0 0.031 1.00 83.19 0.134 10.78 7.10 2 4.75 495 1.6E-03 3.9E+02 2.1E-04 0 0.197 11007 0.05% 2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.07% 0.0001
5.249 5614.70 49.6 0.237 49.6 -0.1 -0.03 0.48%Sand Tailings 0.051 102.8 0.26 0.00 0.26 0 1.70 84.371 1172.76 97.99 190 0.48% 1.5 18% 0.84 0.00 0.84 0 0.98 0.10 1.00 1.0 0.057 47.14 145.13 0.251 4.41 0.96 0.57 0.71 1.41 1.0 0.030 1.00 97.99 0.168 13.09 8.75 2 4.80 495 1.6E-03 3.9E+02 2.1E-04 0 0.198 10961 0.05% 2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.07% 0.0001
5.413 5614.54 53.8 0.297 53.8 0.1 0.06 0.55%Sand Tailings 0.051 102.8 0.27 0.00 0.27 0 1.70 91.511 1272.00 106.29 200 0.55% 1.5 18% 0.85 0.00 0.85 0 0.98 0.11 1.00 1.0 0.057 49.26 155.55 0.299 5.27 0.96 0.60 0.70 1.42 1.0 0.030 1.00 106.29 0.192 14.51 9.89 2 4.85 495 1.6E-03 3.9E+02 2.1E-04 0 0.198 10916 0.05% 2.20 1.00 0.03% 0.001 0.34 0.079 0.765 0.08% 0.0001
5.577 5614.37 52.6 0.352 52.6 -0.1 -0.03 0.67%Sand Tailings 0.051 102.8 0.28 0.00 0.28 0 1.70 89.454 1243.41 103.89 189 0.67% 1.6 18% 0.86 0.00 0.86 0 0.98 0.11 1.00 1.0 0.057 48.65 152.54 0.283 5.00 0.96 0.59 0.71 1.40 1.0 0.030 1.00 103.89 0.184 13.54 9.27 2 4.90 495 1.6E-03 3.9E+02 2.1E-04 0 0.199 10872 0.05% 2.20 1.00 0.03% 0.001 0.34 0.079 0.765 0.08% 0.0001
5.741 5614.21 48.6 0.424 48.6 -0.1 -0.03 0.87%Sand Tailings 0.051 102.8 0.28 0.00 0.28 0 1.70 82.637 1148.65 95.98 170 0.88% 1.7 18% 0.87 0.00 0.87 0 0.98 0.10 1.00 1.0 0.057 46.63 142.60 0.241 4.27 0.96 0.57 0.72 1.37 1.0 0.031 1.04 99.63 0.172 12.26 8.27 2 4.95 495 1.6E-03 3.9E+02 2.2E-04 0 0.199 10829 0.05% 2.20 1.00 0.03% 0.001 0.34 0.079 0.765 0.08% 0.0001
5.905 5614.04 40.4 0.469 40.4 -0.1 -0.02 1.16%Sand-Slime Tailing 0.047 93.3 0.29 0.00 0.29 0 1.70 68.646 954.18 79.73 137 1.17% 1.9 47% 0.87 0.00 0.87 0 0.98 0.09 1.00 1.0 0.056 58.26 137.99 0.226 4.00 0.96 0.52 0.74 1.32 1.0 0.032 1.15 91.53 0.151 10.51 7.26 2 5.00 495 1.4E-03 3.5E+02 2.4E-04 10 0.196 8561 0.05% 2.00 0.65 0.03% 0.008 0.34 0.079 0.765 1.23% 0.0020
6.069 5613.88 31.5 0.463 31.5 -0.1 -0.02 1.47%Sand-Slime Tailing 0.047 93.3 0.30 0.00 0.30 0 1.70 53.584 744.82 62.23 104 1.48% 2.0 47% 0.88 0.00 0.88 0 0.98 0.08 1.00 1.0 0.056 52.13 114.36 0.168 2.98 0.96 0.46 0.77 1.27 1.0 0.033 1.32 81.85 0.131 8.87 5.93 2 5.05 495 1.4E-03 3.5E+02 2.4E-04 10 0.197 8531 0.05% 2.00 0.65 0.03% 0.008 0.34 0.079 0.765 1.26% 0.0021
6.234 5613.72 26.6 0.418 26.6 -0.2 -0.07 1.57%Sand-Slime Tailing 0.047 93.3 0.31 0.00 0.31 0 1.70 45.254 629.03 52.56 86 1.59% 2.1 47% 0.89 0.00 0.89 0 0.98 0.07 1.00 1.0 0.056 48.73 101.29 0.145 2.57 0.96 0.42 0.79 1.24 1.0 0.034 1.44 75.88 0.121 7.97 5.27 2 5.10 495 1.4E-03 3.5E+02 2.4E-04 10 0.197 8500 0.05% 2.00 0.65 0.03% 0.008 0.34 0.079 0.765 1.30% 0.0021
6.398 5613.55 29.2 0.352 29.2 -0.1 -0.04 1.20%Sand-Slime Tailing 0.047 93.3 0.32 0.00 0.32 0 1.70 49.674 690.47 57.69 92 1.22% 2.0 47% 0.90 0.00 0.90 0 0.97 0.08 1.00 1.0 0.056 50.54 108.23 0.157 2.79 0.96 0.44 0.78 1.25 1.0 0.034 1.29 74.59 0.119 7.65 5.22 2 5.15 495 1.4E-03 3.5E+02 2.5E-04 10 0.198 8470 0.05% 2.00 0.65 0.03% 0.009 0.34 0.079 0.765 1.33% 0.0022
6.562 5613.39 31.3 0.327 31.3 -0.1 -0.04 1.04%Sand-Slime Tailing 0.047 93.3 0.32 0.00 0.32 0 1.70 53.244 740.09 61.84 96 1.05% 1.9 47% 0.90 0.00 0.90 0 0.97 0.08 1.00 1.0 0.056 51.99 113.83 0.167 2.98 0.96 0.45 0.77 1.25 1.0 0.034 1.23 75.92 0.121 7.60 5.29 2 5.20 495 1.4E-03 3.5E+02 2.5E-04 10 0.198 8440 0.05% 2.00 0.65 0.03% 0.009 0.34 0.079 0.765 1.36% 0.0022
6.726 5613.22 39.3 0.336 39.4 -0.1 -0.06 0.85%Sand Tailings 0.051 102.8 0.33 0.00 0.33 0 1.70 66.713 927.31 77.48 118 0.86% 1.8 18% 0.91 0.00 0.91 0 0.97 0.09 0.99 1.0 0.056 41.90 119.38 0.178 3.19 0.96 0.51 0.75 1.27 1.0 0.033 1.12 86.56 0.140 8.62 5.90 2 5.25 495 1.6E-03 3.9E+02 2.3E-04 0 0.202 10598 0.06% 2.20 1.00 0.03% 0.001 0.34 0.079 0.765 0.11% 0.0002
6.890 5613.06 39.3 0.331 39.4 -0.2 -0.10 0.84%Sand Tailings 0.062 123.5 0.34 0.00 0.34 1 1.67 65.899 915.99 76.53 115 0.85% 1.8 18% 0.92 0.00 0.92 0 0.97 0.09 0.99 1.0 0.056 41.66 118.19 0.176 3.15 0.96 0.51 0.75 1.26 1.0 0.033 1.12 85.79 0.139 8.30 5.72 2 5.30 495 1.9E-03 4.7E+02 1.9E-04 0 0.202 10550 0.04% 2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.03% 0.0001
7.054 5612.90 38.3 0.410 38.3 -0.2 -0.07 1.07%Sand-Slime Tailing 0.059 119.0 0.35 0.01 0.34 1 1.67 63.953 888.95 74.28 110 1.08% 1.9 47% 0.93 0.00 0.93 0 0.97 0.09 0.99 1.0 0.056 56.35 130.63 0.205 3.67 0.96 0.50 0.75 1.26 1.0 0.034 1.19 88.39 0.144 8.51 6.09 2 5.35 495 1.8E-03 4.5E+02 2.0E-04 10 0.200 8333 0.03% 2.00 0.65 0.03% 0.003 0.34 0.079 0.765 0.46% 0.0008
7.218 5612.73 36.3 0.454 36.4 -0.2 -0.09 1.25%Sand-Slime Tailing 0.059 119.0 0.36 0.01 0.35 1 1.67 60.858 845.93 70.68 103 1.26% 2.0 47% 0.94 0.00 0.94 0 0.97 0.08 0.99 1.0 0.056 55.09 125.77 0.193 3.46 0.96 0.49 0.76 1.24 1.0 0.034 1.26 88.99 0.146 8.48 5.97 2 5.40 495 1.8E-03 4.5E+02 2.0E-04 10 0.200 8297 0.04% 2.00 0.65 0.03% 0.003 0.34 0.079 0.765 0.50% 0.0008
7.382 5612.57 32.3 0.463 32.3 -0.5 -0.21 1.43%Sand-Slime Tailing 0.059 119.0 0.37 0.02 0.35 1 1.69 54.740 760.88 63.57 90 1.45% 2.0 47% 0.95 0.00 0.95 0 0.97 0.08 0.99 1.0 0.056 52.60 116.17 0.172 3.09 0.96 0.46 0.77 1.23 1.0 0.034 1.37 87.13 0.142 8.14 5.62 2 5.45 495 1.8E-03 4.5E+02 2.0E-04 10 0.201 8261 0.04% 2.00 0.65 0.03% 0.003 0.34 0.079 0.765 0.53% 0.0009
7.546 5612.40 29.1 0.420 29.1 -0.5 -0.23 1.44%Sand-Slime Tailing 0.059 119.0 0.38 0.02 0.36 1 1.70 49.419 686.92 57.39 80 1.46% 2.1 47% 0.96 0.00 0.96 0 0.97 0.08 0.99 1.0 0.055 50.43 107.82 0.156 2.81 0.96 0.44 0.78 1.21 1.0 0.035 1.44 82.66 0.133 7.53 5.17 2 5.50 495 1.8E-03 4.5E+02 2.1E-04 10 0.201 8227 0.04% 2.00 0.65 0.03% 0.004 0.34 0.079 0.765 0.57% 0.0009
7.710 5612.24 35.5 0.360 35.5 -0.4 -0.19 1.01%Sand-Slime Tailing 0.059 119.0 0.39 0.03 0.36 1 1.65 58.534 813.62 67.98 97 1.03% 1.9 47% 0.97 0.00 0.97 0 0.97 0.08 0.99 1.0 0.055 54.14 122.12 0.184 3.33 0.96 0.48 0.76 1.23 1.0 0.034 1.22 82.74 0.133 7.44 5.39 2 5.55 495 1.8E-03 4.5E+02 2.1E-04 10 0.202 8192 0.04% 2.00 0.65 0.03% 0.004 0.34 0.079 0.765 0.60% 0.0010
7.874 5612.08 29.1 0.340 29.1 -0.8 -0.33 1.17%Sand-Slime Tailing 0.059 119.0 0.40 0.03 0.37 1 1.69 48.995 681.04 56.90 78 1.19% 2.0 47% 0.98 0.00 0.98 0 0.96 0.08 0.99 1.0 0.055 50.26 107.15 0.155 2.80 0.96 0.44 0.78 1.20 1.0 0.035 1.36 77.25 0.123 6.81 4.81 2 5.60 495 1.8E-03 4.5E+02 2.1E-04 10 0.202 8158 0.04% 2.00 0.65 0.03% 0.004 0.34 0.079 0.765 0.64% 0.0010
8.038 5611.91 19.8 0.302 19.8 -0.8 -0.33 1.53%Sand-Slime Tailing 0.059 119.0 0.41 0.04 0.37 1 1.70 33.592 466.93 39.01 52 1.56% 2.3 47% 0.99 0.00 0.99 0 0.96 0.06 0.99 1.0 0.055 43.98 82.99 0.117 2.11 0.96 0.36 0.80 1.18 1.0 0.036 1.81 70.50 0.113 6.17 4.14 2 5.65 495 1.8E-03 4.5E+02 2.1E-04 10 0.203 8125 0.04% 2.00 0.65 0.03% 0.004 0.34 0.079 0.765 0.67% 0.0011
8.202 5611.75 15.7 0.241 15.7 -0.7 -0.32 1.53%Sand-Slime Tailing 0.059 119.0 0.42 0.04 0.38 1 1.70 26.758 371.94 31.07 41 1.57% 2.3 47% 1.00 0.00 1.00 0 0.96 0.06 0.99 1.0 0.055 41.20 72.27 0.102 1.86 0.96 0.32 0.80 1.18 1.0 0.036 2.08 64.68 0.105 5.69 3.77 2 5.70 495 1.8E-03 4.5E+02 2.2E-04 10 0.203 8092 0.04% 2.00 0.65 0.03% 0.005 0.34 0.079 0.765 0.70% 0.0012
8.366 5611.58 12.1 0.199 12.1 0.0 0.00 1.64%Sand-Slime Tailing 0.059 119.0 0.43 0.05 0.38 1 1.70 20.587 286.16 23.91 31 1.70% 2.5 47% 1.01 0.00 1.01 0 0.96 0.06 0.99 1.0 0.055 38.69 62.60 0.091 1.65 0.96 0.28 0.80 1.18 1.0 0.036 2.57 61.41 0.102 5.43 3.54 2 5.75 495 1.8E-03 4.5E+02 2.2E-04 10 0.204 8059 0.04% 2.00 0.65 0.03% 0.005 0.34 0.079 0.765 0.73% 0.0012
8.530 5611.42 12.2 0.172 12.2 1.6 0.68 1.41%Sand-Slime Tailing 0.059 119.0 0.44 0.05 0.39 1 1.70 20.672 287.34 24.03 30 1.47% 2.4 47% 1.02 0.00 1.02 0 0.96 0.06 0.99 1.0 0.055 38.73 62.76 0.091 1.65 0.96 0.28 0.80 1.17 1.0 0.036 2.41 57.94 0.098 5.18 3.42 2 5.80 495 1.8E-03 4.5E+02 2.2E-04 10 0.204 8027 0.04% 2.00 0.65 0.03% 0.005 0.34 0.079 0.765 0.77% 0.0013
8.694 5611.26 15.4 0.055 15.4 3.8 1.64 0.36%Sand-Slime Tailing 0.059 119.0 0.45 0.06 0.39 1 1.70 26.197 364.14 30.47 38 0.37% 2.0 47% 1.03 0.00 1.03 0 0.96 0.06 0.99 1.0 0.055 40.99 71.46 0.101 1.85 0.96 0.32 0.80 1.17 1.0 0.036 1.36 41.48 0.085 4.42 3.13 2 5.85 495 1.8E-03 4.5E+02 2.2E-04 10 0.205 7996 0.04% 2.00 0.65 0.03% 0.005 0.34 0.079 0.765 0.80% 0.0013
8.858 5611.09 18.3 0.062 18.3 2.3 0.99 0.34%Sand-Slime Tailing 0.059 119.0 0.46 0.06 0.40 1 1.70 31.076 431.96 36.12 45 0.35% 2.0 47% 1.04 0.00 1.04 0 0.96 0.06 0.99 1.0 0.055 42.97 79.09 0.111 2.03 0.95 0.35 0.80 1.17 1.0 0.036 1.26 45.58 0.088 4.54 3.29 2 5.90 495 1.8E-03 4.5E+02 2.2E-04 10 0.205 7964 0.04% 2.00 0.65 0.03% 0.005 0.34 0.079 0.765 0.83% 0.0014
9.022 5610.93 16.7 0.107 16.7 1.6 0.68 0.64%Sand-Slime Tailing 0.059 119.0 0.47 0.07 0.40 1 1.70 28.441 395.33 33.05 41 0.66% 2.1 47% 1.05 0.00 1.05 0 0.96 0.06 0.99 1.0 0.055 41.89 74.95 0.106 1.94 0.95 0.33 0.80 1.17 1.0 0.036 1.51 50.04 0.092 4.68 3.31 2 5.95 495 1.8E-03 4.5E+02 2.3E-04 10 0.206 7934 0.04% 2.00 0.65 0.03% 0.006 0.34 0.079 0.765 0.86% 0.0014
9.186 5610.76 20.6 0.079 20.6 2.3 1.01 0.38%Sand-Slime Tailing 0.059 119.0 0.48 0.07 0.41 1 1.67 34.288 476.60 39.85 50 0.39% 2.0 47% 1.06 0.00 1.06 0 0.96 0.06 0.99 1.0 0.055 44.28 84.13 0.118 2.17 0.95 0.36 0.80 1.16 1.0 0.036 1.24 49.54 0.091 4.61 3.39 2 6.00 495 1.8E-03 4.5E+02 2.3E-04 10 0.206 7903 0.04% 2.00 0.65 0.03% 0.006 0.34 0.079 0.765 0.89% 0.0015
9.350 5610.60 19.5 0.075 19.5 1.6 0.68 0.38%Sand-Slime Tailing 0.059 119.0 0.49 0.08 0.41 1 1.67 32.552 452.47 37.83 46 0.39% 2.0 47% 1.07 0.00 1.07 0 0.96 0.06 0.99 1.0 0.054 43.57 81.39 0.115 2.10 0.95 0.36 0.80 1.16 1.0 0.036 1.27 48.15 0.090 4.50 3.30 2 6.05 460 1.8E-03 3.9E+02 2.7E-04 10 0.207 7873 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.54% 0.0025
9.514 5610.44 17.8 0.086 17.8 1.5 0.66 0.48%Sand-Slime Tailing 0.059 119.0 0.50 0.08 0.41 1 1.67 29.767 413.77 34.59 42 0.50% 2.1 47% 1.08 0.00 1.08 0 0.95 0.06 0.99 1.0 0.054 42.43 77.02 0.109 2.00 0.95 0.34 0.80 1.16 1.0 0.036 1.39 48.17 0.090 4.45 3.23 2 6.10 460 1.8E-03 3.9E+02 2.7E-04 10 0.207 7844 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.58% 0.0026
9.678 5610.27 15.7 0.078 15.6 1.8 0.77 0.50%Sand-Slime Tailing 0.059 119.0 0.51 0.09 0.42 1 1.68 26.331 366.00 30.60 36 0.52% 2.1 47% 1.09 0.00 1.09 0 0.95 0.06 0.99 1.0 0.054 41.03 71.64 0.102 1.87 0.95 0.32 0.80 1.15 1.0 0.036 1.51 46.09 0.088 4.32 3.10 2 6.15 460 1.8E-03 3.9E+02 2.7E-04 10 0.208 7814 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.61% 0.0026
9.842 5610.11 16.0 0.072 16.0 2.3 1.01 0.45%Sand-Slime Tailing 0.059 119.0 0.52 0.09 0.42 1 1.67 26.712 371.30 31.05 37 0.46% 2.1 47% 1.10 0.00 1.10 0 0.95 0.06 0.99 1.0 0.054 41.19 72.24 0.102 1.89 0.95 0.32 0.80 1.15 1.0 0.036 1.46 45.31 0.088 4.24 3.07 2 6.20 460 1.8E-03 3.9E+02 2.7E-04 10 0.208 7785 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.65% 0.0027
10.006 5609.94 15.8 0.137 15.8 2.7 1.18 0.87%Sand-Slime Tailing 0.059 119.0 0.53 0.10 0.43 1 1.66 26.226 364.54 30.49 36 0.89% 2.2 47% 1.11 0.00 1.11 0 0.95 0.06 0.99 1.0 0.054 41.00 71.49 0.101 1.87 0.95 0.32 0.80 1.15 1.0 0.037 1.79 54.55 0.095 4.55 3.21 2 6.25 460 1.8E-03 3.9E+02 2.8E-04 10 0.209 7757 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.68% 0.0028
10.170 5609.78 17.6 0.093 17.6 0.8 0.35 0.53%Sand-Slime Tailing 0.059 119.0 0.54 0.10 0.43 1 1.63 28.606 397.62 33.23 39 0.55% 2.1 47% 1.12 0.00 1.12 0 0.95 0.06 0.98 1.0 0.054 41.96 75.19 0.106 1.97 0.95 0.33 0.80 1.15 1.0 0.037 1.46 48.69 0.091 4.29 3.13 2 6.30 460 1.8E-03 3.9E+02 2.8E-04 10 0.209 7729 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.72% 0.0028
10.335 5609.62 16.3 0.209 16.3 0.9 0.39 1.28%Sand-Slime Tailing 0.059 119.0 0.55 0.11 0.44 1 1.63 26.555 369.12 30.85 36 1.33% 2.3 47% 1.13 0.00 1.13 0 0.95 0.06 0.98 1.0 0.054 41.12 71.97 0.102 1.89 0.95 0.32 0.80 1.14 1.0 0.037 2.08 64.08 0.104 4.90 3.40 2 6.35 460 1.8E-03 3.9E+02 2.8E-04 10 0.209 7701 0.07% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.76% 0.0029
10.499 5609.45 17.8 0.152 17.8 2.3 1.00 0.85%Sand-Slime Tailing 0.059 119.0 0.56 0.11 0.44 1 1.60 28.581 397.27 33.22 39 0.88% 2.2 47% 1.14 0.00 1.14 0 0.95 0.06 0.98 1.0 0.054 41.95 75.17 0.106 1.97 0.95 0.33 0.80 1.14 1.0 0.037 1.69 56.22 0.097 4.48 3.23 2 6.40 460 1.8E-03 3.9E+02 2.8E-04 10 0.210 7673 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.79% 0.0029
10.663 5609.29 19.9 0.083 19.9 0.8 0.33 0.42%Sand-Slime Tailing 0.059 119.0 0.57 0.12 0.45 1 1.58 31.420 436.73 36.50 43 0.43% 2.0 47% 1.15 0.00 1.15 0 0.95 0.06 0.98 1.0 0.054 43.10 79.60 0.112 2.09 0.95 0.35 0.80 1.14 1.0 0.037 1.33 48.51 0.090 4.16 3.12 2 6.45 460 1.8E-03 3.9E+02 2.9E-04 10 0.210 7646 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.83% 0.0030
10.827 5609.12 16.0 0.095 16.0 -0.5 -0.20 0.59%Sand-Slime Tailing 0.059 119.0 0.58 0.12 0.45 1 1.60 25.570 355.42 29.69 34 0.62% 2.2 47% 1.16 0.00 1.16 0 0.95 0.06 0.98 1.0 0.054 40.72 70.41 0.100 1.86 0.95 0.31 0.80 1.14 1.0 0.037 1.63 48.41 0.090 4.11 2.99 2 6.50 460 1.8E-03 3.9E+02 2.9E-04 10 0.211 7619 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.86% 0.0031
10.991 5608.96 13.0 0.120 13.0 0.1 0.02 0.92%Sand-Slime Tailing 0.059 119.0 0.59 0.13 0.46 1 1.62 21.109 293.42 24.52 27 0.96% 2.4 47% 1.17 0.00 1.17 0 0.94 0.06 0.98 1.0 0.054 38.90 63.42 0.092 1.71 0.95 0.29 0.80 1.14 1.0 0.037 2.17 53.19 0.094 4.24 2.97 2 6.55 460 1.8E-03 3.9E+02 2.9E-04 10 0.211 7593 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.90% 0.0031
11.155 5608.80 10.5 0.104 10.5 0.8 0.35 0.99%Sand-Slime Tailing 0.059 119.0 0.60 0.13 0.46 1 1.63 17.098 237.66 19.87 21 1.05% 2.5 47% 1.18 0.00 1.18 0 0.94 0.05 0.98 1.0 0.054 37.27 57.14 0.085 1.58 0.95 0.26 0.80 1.13 1.0 0.037 2.63 52.29 0.093 4.16 2.87 2 6.60 460 1.8E-03 3.9E+02 2.9E-04 10 0.212 7567 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.93% 0.0032
11.319 5608.63 9.8 0.058 9.8 2.8 1.20 0.59%Sand-Slime Tailing 0.059 119.0 0.60 0.14 0.47 1 1.62 15.832 220.07 18.42 20 0.63% 2.4 47% 1.19 0.00 1.19 0 0.94 0.05 0.98 1.0 0.054 36.76 55.18 0.083 1.54 0.95 0.25 0.80 1.13 1.0 0.037 2.32 42.69 0.086 3.78 2.66 2 6.65 460 1.8E-03 3.9E+02 3.0E-04 10 0.212 7541 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.97% 0.0032
11.483 5608.47 10.7 0.143 10.7 4.7 2.02 1.33%Sand-Slime Tailing 0.059 119.0 0.61 0.14 0.47 1 1.60 17.154 238.45 19.98 21 1.42% 2.5 47% 1.20 0.00 1.20 0 0.94 0.05 0.98 1.0 0.053 37.31 57.29 0.085 1.59 0.95 0.26 0.80 1.13 1.0 0.037 2.98 59.46 0.100 4.36 2.97 2 6.70 460 1.8E-03 3.9E+02 3.0E-04 10 0.213 7515 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 2.00% 0.0033
11.647 5608.30 9.4 0.085 9.4 6.2 2.70 0.91%Sand-Slime Tailing 0.059 119.0 0.62 0.15 0.47 1 1.59 14.889 206.96 17.37 18 0.97% 2.5 47% 1.20 0.00 1.20 0 0.94 0.05 0.98 1.0 0.053 36.39 53.76 0.081 1.52 0.95 0.24 0.80 1.13 1.0 0.037 2.83 49.19 0.091 3.95 2.73 2 6.75 460 1.8E-03 3.9E+02 3.0E-04 10 0.213 7490 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 2.04% 0.0033
11.811 5608.14 9.7 0.067 9.6 8.3 3.60 0.69%Sand-Slime Tailing 0.059 119.0 0.63 0.15 0.48 1 1.58 15.172 210.89 17.72 19 0.74% 2.5 47% 1.21 0.00 1.21 0 0.94 0.05 0.98 1.0 0.053 36.51 54.23 0.082 1.53 0.95 0.24 0.80 1.12 1.0 0.037 2.54 44.93 0.087 3.76 2.64 2 6.80 460 1.8E-03 3.9E+02 3.0E-04 10 0.214 7465 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.08% 0.0034
11.975 5607.98 9.5 0.042 9.4 9.2 3.97 0.44%Sand-Slime Tailing 0.059 119.0 0.64 0.16 0.48 1 1.57 14.744 204.94 17.23 18 0.48% 2.4 47% 1.22 0.00 1.22 0 0.94 0.05 0.98 1.0 0.053 36.34 53.57 0.081 1.52 0.95 0.24 0.80 1.12 1.0 0.037 2.25 38.83 0.082 3.51 2.51 2 6.85 460 1.8E-03 3.9E+02 3.1E-04 10 0.214 7440 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.11% 0.0035
12.139 5607.81 8.5 0.033 8.5 11.3 4.90 0.39%Sand-Slime Tailing 0.059 119.0 0.65 0.17 0.49 1 1.56 13.171 183.08 15.43 16 0.42% 2.4 47% 1.23 0.00 1.23 0 0.94 0.05 0.98 1.0 0.053 35.71 51.14 0.079 1.48 0.95 0.23 0.80 1.12 1.0 0.037 2.37 36.59 0.080 3.39 2.44 2 6.90 460 1.8E-03 3.9E+02 3.1E-04 10 0.214 7416 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.15% 0.0035
12.303 5607.65 7.5 0.137 7.4 15.9 6.87 1.83%Slime Tailings 0.057 113.1 0.66 0.17 0.49 1 1.55 11.398 158.44 13.42 14 2.01% 2.8 71% 1.24 0.00 1.24 0 0.94 0.05 0.98 1.0 0.053 34.76 48.18 0.076 1.43 0.95 0.21 0.80 1.12 1.0 0.037 4.65 62.38 0.103 4.29 2.86 2 6.95 460 1.8E-03 3.7E+02 3.3E-04 16 0.466 6088 0.10% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.67% 0.0044
12.467 5607.48 9.8 0.166 9.7 9.9 4.27 1.70%Sand-Slime Tailing 0.059 119.0 0.67 0.18 0.50 1 1.54 14.939 207.65 17.46 18 1.82% 2.7 47% 1.25 0.00 1.25 0 0.93 0.05 0.98 1.0 0.053 36.43 53.88 0.081 1.54 0.95 0.24 0.80 1.12 1.0 0.037 3.70 64.54 0.105 4.35 2.95 2 7.00 460 1.8E-03 3.9E+02 3.1E-04 10 0.215 7369 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.22% 0.0036
12.631 5607.32 8.6 0.151 8.5 17.3 7.50 1.76%Slime Tailings 0.057 113.1 0.68 0.18 0.50 1 1.53 12.904 179.37 15.18 16 1.91% 2.7 71% 1.26 0.00 1.26 0 0.93 0.05 0.98 1.0 0.053 35.37 50.55 0.078 1.47 0.95 0.22 0.80 1.11 1.0 0.037 4.18 63.47 0.104 4.27 2.87 2 7.05 460 1.8E-03 3.7E+02 3.3E-04 16 0.467 6050 0.10% 2.00 0.65 0.03% 0.018 0.34 0.079 0.765 2.74% 0.0045
12.795 5607.15 13.0 0.092 12.9 18.8 8.15 0.71%Sand-Slime Tailing 0.059 119.0 0.69 0.19 0.51 1 1.51 19.343 268.87 22.67 24 0.75% 2.4 47% 1.27 0.00 1.27 0 0.93 0.05 0.98 1.0 0.053 38.25 60.92 0.089 1.69 0.95 0.27 0.80 1.11 1.0 0.037 2.14 48.49 0.090 3.69 2.69 2 7.10 460 1.8E-03 3.9E+02 3.2E-04 10 0.216 7323 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.29% 0.0038
12.959 5606.99 16.0 0.166 15.9 19.0 8.23 1.04%Sand-Slime Tailing 0.059 119.0 0.70 0.19 0.51 1 1.47 23.423 325.57 27.41 30 1.08% 2.4 47% 1.28 0.00 1.28 0 0.93 0.06 0.98 1.0 0.053 39.91 67.32 0.096 1.83 0.95 0.30 0.80 1.11 1.0 0.038 2.14 58.59 0.099 3.99 2.91 2 7.15 460 1.8E-03 3.9E+02 3.2E-04 10 0.216 7300 0.09% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.33% 0.0038
13.123 5606.83 14.4 0.162 14.3 15.8 6.85 1.13%Sand-Slime Tailing 0.059 119.0 0.71 0.20 0.52 1 1.48 21.034 292.37 24.60 26 1.19% 2.4 47% 1.29 0.00 1.29 0 0.93 0.06 0.98 1.0 0.053 38.93 63.53 0.092 1.75 0.94 0.29 0.80 1.11 1.0 0.038 2.41 59.16 0.099 3.98 2.86 2 7.20 460 1.8E-03 3.9E+02 3.2E-04 10 0.217 7277 0.09% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.36% 0.0039
13.287 5606.66 17.3 0.194 17.2 19.5 8.43 1.12%Sand-Slime Tailing 0.059 119.0 0.72 0.20 0.52 1 1.45 24.868 345.66 29.09 32 1.17% 2.4 47% 1.30 0.00 1.30 0 0.93 0.06 0.98 1.0 0.052 40.50 69.59 0.099 1.89 0.94 0.31 0.80 1.11 1.0 0.038 2.12 61.68 0.102 4.05 2.97 2 7.25 460 1.8E-03 3.9E+02 3.2E-04 10 0.217 7254 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.40% 0.0039
13.451 5606.50 19.4 0.173 19.3 8.1 3.49 0.89%Sand-Slime Tailing 0.059 119.0 0.73 0.21 0.52 1 1.43 27.509 382.38 32.03 35 0.93% 2.3 47% 1.31 0.00 1.31 0 0.93 0.06 0.97 1.0 0.052 41.54 73.57 0.104 1.99 0.94 0.33 0.80 1.10 1.0 0.038 1.82 58.33 0.098 3.88 2.94 2 7.30 460 1.8E-03 3.9E+02 3.3E-04 10 0.218 7232 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.44% 0.0040
13.615 5606.33 16.0 0.144 15.9 7.5 3.27 0.90%Sand-Slime Tailing 0.059 119.0 0.74 0.21 0.53 1 1.44 22.875 317.96 26.65 29 0.95% 2.3 47% 1.32 0.00 1.32 0 0.93 0.06 0.98 1.0 0.052 39.65 66.29 0.095 1.82 0.94 0.30 0.80 1.10 1.0 0.038 2.08 55.52 0.096 3.75 2.78 2 7.35 460 1.8E-03 3.9E+02 3.3E-04 10 0.218 7210 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.48% 0.0041
13.779 5606.17 12.6 0.124 12.5 6.8 2.94 0.99%Sand-Slime Tailing 0.059 119.0 0.75 0.22 0.53 1 1.45 18.200 252.98 21.21 22 1.05% 2.5 47% 1.33 0.00 1.33 0 0.92 0.05 0.98 1.0 0.052 37.74 58.95 0.087 1.66 0.94 0.27 0.80 1.10 1.0 0.038 2.58 54.62 0.095 3.69 2.67 2 7.40 460 1.8E-03 3.9E+02 3.3E-04 10 0.219 7188 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.51% 0.0041
13.943 5606.01 11.2 0.094 11.1 15.0 6.52 0.84%Sand-Slime Tailing 0.059 119.0 0.76 0.22 0.54 1 1.44 16.070 223.37 18.82 19 0.90% 2.5 47% 1.34 0.00 1.34 0 0.92 0.05 0.98 1.0 0.052 36.90 55.72 0.083 1.60 0.94 0.25 0.80 1.10 1.0 0.038 2.65 49.94 0.092 3.52 2.56 2 7.45 460 1.8E-03 3.9E+02 3.3E-04 10 0.219 7166 0.09% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.55% 0.0042
14.107 5605.84 10.0 0.113 9.9 19.5 8.43 1.13%Sand-Slime Tailing 0.059 119.0 0.77 0.23 0.54 1 1.43 14.143 196.59 16.63 17 1.23% 2.6 47% 1.35 0.00 1.35 0 0.92 0.05 0.98 1.0 0.052 36.13 52.76 0.080 1.54 0.94 0.24 0.80 1.10 1.0 0.038 3.29 54.75 0.095 3.63 2.59 2 7.50 460 1.8E-03 3.9E+02 3.4E-04 10 0.219 7144 0.09% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.59% 0.0042
14.271 5605.68 9.1 0.159 8.8 48.1 20.86 1.75%Slime Tailings 0.057 113.1 0.78 0.23 0.55 1 1.42 12.506 173.84 15.02 15 1.92% 2.7 71% 1.36 0.00 1.36 0 0.92 0.05 0.98 1.0 0.052 35.32 50.34 0.078 1.50 0.94 0.22 0.80 1.09 1.0 0.038 4.28 64.34 0.105 3.97 2.73 2 7.55 460 1.8E-03 3.7E+02 3.6E-04 16 0.471 5869 0.12% 2.00 0.65 0.03% 0.020 0.34 0.079 0.765 3.13% 0.0051
14.436 5605.51 14.3 0.207 13.9 61.3 26.57 1.45%Sand-Slime Tailing 0.059 119.0 0.79 0.24 0.55 1 1.41 19.507 271.15 23.28 24 1.54% 2.5 47% 1.37 0.00 1.37 0 0.92 0.05 0.97 1.0 0.052 38.47 61.75 0.090 1.73 0.94 0.28 0.80 1.09 1.0 0.038 2.84 66.01 0.107 4.01 2.87 2 7.60 460 1.8E-03 3.9E+02 3.4E-04 10 0.220 7103 0.10% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.66% 0.0044
14.600 5605.35 20.5 0.331 20.4 11.3 4.89 1.62%Sand-Slime Tailing 0.059 119.0 0.80 0.24 0.56 1 1.37 27.819 386.69 32.42 35 1.68% 2.4 47% 1.38 0.00 1.38 0 0.92 0.06 0.97 1.0 0.052 41.67 74.09 0.105 2.03 0.94 0.33 0.80 1.09 1.0 0.038 2.34 75.74 0.120 4.48 3.26 2 7.65 500 1.8E-03 4.6E+02 2.9E-04 10 0.220 7082 0.07% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.74% 0.0029
14.764 5605.19 14.9 0.361 14.8 6.9 3.00 2.43%Slime Tailings 0.057 113.1 0.81 0.25 0.56 1 1.39 20.567 285.88 23.96 25 2.56% 2.6 71% 1.39 0.00 1.39 0 0.92 0.06 0.97 1.0 0.052 38.43 62.39 0.091 1.75 0.94 0.28 0.80 1.09 1.0 0.038 3.55 84.93 0.137 5.07 3.41 2 7.70 500 1.8E-03 4.4E+02 3.1E-04 16 0.472 5818 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.20% 0.0036
14.928 5605.02 12.9 0.158 12.8 9.8 4.24 1.23%Sand-Slime Tailing 0.059 119.0 0.82 0.25 0.57 1 1.39 17.775 247.07 20.74 21 1.31% 2.5 47% 1.40 0.00 1.40 0 0.92 0.05 0.97 1.0 0.052 37.58 58.32 0.086 1.67 0.94 0.26 0.80 1.09 1.0 0.038 2.90 60.16 0.100 3.68 2.67 2 7.75 500 1.8E-03 4.6E+02 3.0E-04 10 0.221 7042 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.80% 0.0029
15.092 5604.86 13.3 0.157 13.3 13.5 5.85 1.18%Sand-Slime Tailing 0.059 119.0 0.83 0.26 0.57 1 1.38 18.278 254.06 21.36 22 1.25% 2.5 47% 1.41 0.00 1.41 0 0.91 0.05 0.97 1.0 0.051 37.79 59.16 0.087 1.69 0.94 0.27 0.80 1.09 1.0 0.038 2.79 59.56 0.100 3.63 2.66 2 7.80 500 1.8E-03 4.6E+02 3.0E-04 10 0.222 7022 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.82% 0.0030
15.256 5604.69 16.0 0.117 16.0 9.0 3.88 0.73%Sand-Slime Tailing 0.059 119.0 0.84 0.26 0.57 1 1.36 21.654 300.99 25.24 26 0.77% 2.3 47% 1.42 0.00 1.42 0 0.91 0.06 0.97 1.0 0.051 39.15 64.39 0.093 1.81 0.94 0.29 0.80 1.08 1.0 0.038 2.04 51.53 0.093 3.35 2.58 2 7.85 500 1.8E-03 4.6E+02 3.0E-04 10 0.222 7002 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.85% 0.0030
15.420 5604.53 20.1 0.148 20.0 8.1 3.53 0.74%Sand-Slime Tailing 0.059 119.0 0.85 0.27 0.58 1 1.33 26.610 369.88 30.98 33 0.77% 2.2 47% 1.43 0.00 1.43 0 0.91 0.06 0.97 1.0 0.051 41.17 72.15 0.102 2.00 0.94 0.32 0.80 1.08 1.0 0.038 1.78 55.03 0.095 3.42 2.71 2 7.90 500 1.8E-03 4.6E+02 3.0E-04 10 0.222 6982 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.88% 0.0031
15.584 5604.37 17.1 0.147 17.1 5.0 2.18 0.86%Sand-Slime Tailing 0.059 119.0 0.86 0.27 0.58 1 1.34 22.799 316.91 26.53 28 0.90% 2.3 47% 1.44 0.00 1.44 0 0.91 0.06 0.97 1.0 0.051 39.61 66.13 0.095 1.86 0.94 0.30 0.80 1.08 1.0 0.038 2.09 55.54 0.096 3.41 2.64 2 7.95 500 1.8E-03 4.6E+02 3.0E-04 10 0.223 6962 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.91% 0.0031
15.748 5604.20 24.6 0.148 24.6 5.9 2.55 0.60%Sand-Slime Tailing 0.059 119.0 0.87 0.28 0.59 1 1.30 31.972 444.41 37.19 40 0.62% 2.1 47% 1.45 0.00 1.45 0 0.91 0.06 0.97 1.0 0.051 43.34 80.53 0.113 2.23 0.94 0.35 0.80 1.08 1.0 0.038 1.50 55.66 0.096 3.39 2.81 2 8.00 500 1.8E-03 4.6E+02 3.1E-04 10 0.223 6943 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.94% 0.0032
15.912 5604.04 28.1 0.259 28.1 1.3 0.58 0.92%Sand-Slime Tailing 0.059 119.0 0.88 0.28 0.59 1 1.28 36.048 501.07 41.88 46 0.95% 2.2 47% 1.46 0.00 1.46 0 0.91 0.07 0.97 1.0 0.051 44.99 86.87 0.122 2.41 0.94 0.37 0.80 1.08 1.0 0.038 1.60 66.81 0.108 3.78 3.10 2 8.05 500 1.8E-03 4.6E+02 3.1E-04 10 0.224 6923 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.96% 0.0032
16.076 5603.87 18.4 0.329 18.4 2.2 0.96 1.79%Sand-Slime Tailing 0.059 119.0 0.89 0.29 0.60 1 1.31 24.074 334.62 27.98 29 1.88% 2.5 47% 1.47 0.00 1.47 0 0.91 0.06 0.97 1.0 0.051 40.11 68.10 0.097 1.91 0.94 0.31 0.80 1.08 1.0 0.038 2.76 77.26 0.123 4.28 3.10 2 8.10 500 1.8E-03 4.6E+02 3.1E-04 10 0.224 6904 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.99% 0.0033
16.240 5603.71 15.8 0.279 15.8 3.6 1.57 1.76%Sand-Slime Tailing 0.059 119.0 0.90 0.29 0.60 1 1.31 20.712 287.90 24.09 25 1.87% 2.6 47% 1.48 0.00 1.48 0 0.91 0.06 0.97 1.0 0.051 38.75 62.84 0.091 1.79 0.94 0.28 0.80 1.07 1.0 0.038 3.07 74.03 0.118 4.07 2.93 2 8.15 500 1.8E-03 4.6E+02 3.1E-04 10 0.224 6885 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 2.02% 0.0033
16.404 5603.55 16.9 0.229 16.8 5.1 2.20 1.36%Sand-Slime Tailing 0.059 119.0 0.91 0.30 0.61 1 1.30 21.871 304.00 25.45 26 1.44% 2.5 47% 1.49 0.00 1.49 0 0.90 0.06 0.97 1.0 0.051 39.23 64.68 0.093 1.84 0.94 0.29 0.80 1.07 1.0 0.039 2.62 66.75 0.108 3.69 2.77 2 8.20 500 1.8E-03 4.6E+02 3.1E-04 10 0.225 6866 0.08% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 2.05% 0.0034
16.568 5603.38 15.2 0.239 15.2 7.9 3.42 1.57%Sand-Slime Tailing 0.059 119.0 0.92 0.30 0.61 1 1.30 19.693 273.73 22.95 23 1.67% 2.5 47% 1.50 0.00 1.50 0 0.90 0.05 0.97 1.0 0.051 38.35 61.30 0.089 1.76 0.94 0.28 0.80 1.07 1.0 0.039 3.03 69.61 0.111 3.79 2.78 2 8.25 500 1.8E-03 4.6E+02 3.2E-04 10 0.225 6848 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.08% 0.0034
16.732 5603.22 13.1 0.158 13.0 11.1 4.82 1.21%Sand-Slime Tailing 0.059 119.0 0.93 0.31 0.62 1 1.30 16.874 234.55 19.70 20 1.30% 2.6 47% 1.51 0.00 1.51 0 0.90 0.05 0.97 1.0 0.051 37.21 56.91 0.085 1.67 0.94 0.26 0.80 1.07 1.0 0.039 3.05 60.03 0.100 3.39 2.53 2 8.30 500 1.8E-03 4.6E+02 3.2E-04 10 0.225 6829 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.11% 0.0035
16.896 5603.05 15.1 0.126 15.0 13.3 5.78 0.84%Sand-Slime Tailing 0.059 119.0 0.93 0.31 0.62 1 1.29 19.254 267.63 22.49 23 0.89% 2.4 47% 1.52 0.00 1.52 0 0.90 0.05 0.97 1.0 0.050 38.19 60.67 0.089 1.76 0.94 0.27 0.80 1.07 1.0 0.039 2.38 53.50 0.094 3.16 2.46 2 8.35 500 1.8E-03 4.6E+02 3.2E-04 10 0.226 6811 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.13% 0.0035
17.060 5602.89 12.8 0.181 12.7 13.0 5.63 1.41%Sand-Slime Tailing 0.059 119.0 0.94 0.32 0.63 1 1.28 16.345 227.19 19.10 19 1.52% 2.6 47% 1.53 0.00 1.53 0 0.90 0.05 0.97 1.0 0.050 37.00 56.11 0.084 1.66 0.94 0.25 0.80 1.07 1.0 0.039 3.34 63.84 0.104 3.47 2.57 2 8.40 500 1.8E-03 4.6E+02 3.2E-04 10 0.226 6793 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.16% 0.0035
17.224 5602.73 12.9 0.200 12.8 18.8 8.16 1.55%Sand-Slime Tailing 0.059 119.0 0.95 0.32 0.63 1 1.28 16.340 227.12 19.15 19 1.67% 2.6 47% 1.53 0.00 1.53 0 0.90 0.05 0.97 1.0 0.050 37.02 56.17 0.084 1.66 0.94 0.25 0.80 1.06 1.0 0.039 3.48 66.58 0.107 3.56 2.61 2 8.45 500 1.8E-03 4.6E+02 3.2E-04 10 0.227 6775 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.19% 0.0036
P = γeff*(Geff
/Gmax)
(tsf)
Volumetric Strain for Design Event, εv (%)
Incrementa
l Consolidation (ft)
CN
Volumetric
Strain for
Design
Event, εv (%)
Incremental Consolidation (ft)
TOTAL SEISMIC SETTLEMENT (FT):
Midpoint Depth at t1, z1
Shear Wave Velocity, Vs
Soil Density, ρ (tcf)b
Threshhol
d Shear Strain, γtv
(%)
Volumetri
c Strain at
15 Cycles,
εc-15 (%)Rc
Plasticity Index, PI g1 g2
Shear Strain, γ (%)a
Effective Stress at Bottom of Layer
Effective Stress at Midpoint of Layer FINAL COVER
Erosion Protection Layer
Water Storage/Rooting Zone Layer
qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Equil Pore Pressure at Midpoint of Layer (tsf)
Max Shear
Strain
Modulus,
Gmax (tsf)
Unit Weight (tcf)
Unit Weight (pcf)
Total Stress at Bottom of Layer
Total Stress at Midpoint of Layer
Equil Pore Pressure at Bottom of Layer
Cyclic Resistance Ratio
FoS
Cyclic Stress Ratio
FoS
∆qc1n qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Threshhol
d Shear
Strain, γtv (%)
Volumetric Strain at 15 Cycles, εc-15 (%)RcCNg1g2
Shear
Strain, γ ab
Seismic Settlement Analysis - Stewart et al (2004)
Shear Wave Velocity, Vs
High Compaction Layer
Platform/Random Fill Layer
Pw (u2)Pw (u2)
2013 CPT Data from ConeTec CPT Data Interpretations
fs/qt
Material
Type (as determined by fines
Unit Weight Unit Weight
Total
Stress
at time of CPT
Depth
at time of CPT Elevation qt fs qc
Effective
Stress at
time of CPT
Saturated
at time of CPT
Type Index,
Ic FC
Youd, et al (2001)
Max. Horiz. Acceleration, Amax/g: 0.15
Earthquake Moment Magnitude, M:
Idriss and Boulanger (2008)
Max. Horiz. Acceleration, Amax/g:
Earthquake Moment Magnitude, M:
Magnitude Scaling Factor, MSF:
WHITE MESA TAILINGS REPOSITORY LIQUEFACTION AND SEISMIC SETTLEMENT ANALYSES - 2E1 Elev. at Top of Layer (ft)
Elev. At Midpoint of Layer (ft)
Elev. At Bottom of Layer
Thickness of Layer (ft)
5.5
Magnitude Scaling Factor, MSF:
Equil
Pore
Pressure at time of
Conditions at t1 Liquefaction Triggering AnalysesEquil
Pore Pressure at t1CN qc1 qc1 qc1N
Normalized
Cone
Penetration Resistance, Qt
Normalize
d Friction
Ratio, Fr (%)
Total Stress at t1 Liquefiable?1=Yes
2=No
Cyclic Stress RatioEffective Stress at t1
Saturated at t1
Idriss & Boulanger (2008)
CSR
M=7.5,
s'v=1atm
Kc
Scaling Factor for stress ration, rm
Volumetric Strain Ratio for Site-Specific Design Earthq
Equiv. Number of Uniform Strain Cycles, N
Youd et al. (2001)
CSR
M=7.5,
s'v=1atm
Depth at t1, z1
Soil Density, ρ
Maximum Shear Strain
Modulus,
Gmax
P =
γeff*(Geff/Gmax)
Plastici
ty Index, PI
Liquef_SeismicSettle_30Aug2015.xls Page 16 of 29
Energy Fuels Resources (USA) Inc.White Mesa Mill
Seismic Settlement Analyses
Data File: 13-52106_SP2E1-BSC-CPT 5613.10 Water surface elevation during CPT investigation (ft a 5619.95 Ground Surface Elevation at time of CPT (ft amsl)
Location: White Mesa 2013 CPT Investigation 0.15 5611.67 Water surface elevation at t0 (ft amsl)5630.46 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl)
..\..\..\6.2.3 Field Data\2013 Field Investigation\Conetec Dat 5.5 5595.46 Water surface elevation at t1 (ft amsl) 0.50 Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after place ###### 5630.21 5629.96 0.50 0.055 110 0.028 0.014 0.00 0.00 0.028 0.014 0.08 508 1.7E-03 4.4E+02 3.0E-06 11 0.068 46696 0.00% 1.20 0.80 0.04% 0.000 0.32 0.133 0.778 0.00% 0.0000
Tailings Sands 1.69 5590.46 Water surface elevation at t2 (ft amsl)3.50 Thickness of Water Storage/Rooting Zone (ft)###### 5628.21 5626.46 3.50 0.054 107 0.215 0.121 0.00 0.00 0.215 0.121 0.69 508 1.7E-03 4.3E+02 2.8E-05 11 0.118 18930 0.00% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
Tailings Sand-Slimes 4.00 Thickness of High Compaction Layer (ft)###### 5624.46 5622.46 4.00 0.060 120 0.454 0.334 0.00 0.00 0.454 0.334 1.83 508 1.9E-03 4.8E+02 6.8E-05 11 0.153 12419 0.01% 0.65 0.75 0.02% 0.000 0.34 0.079 0.765 0.00% 0.0000
Tailings Slimes 1.44 2.51 Thickness of Random/Platform Fill on on top of existing interim cover (ft) ###### 5621.21 5619.95 2.51 0.050 101 0.580 0.517 0.00 0.00 0.580 0.517 2.82 508 1.6E-03 4.0E+02 1.2E-04 11 0.171 10362 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
Interim Cover 0.47 1160.95 Additional Stress due to Final Cover Placement, ΔσFC (psf)
Cells Requiring User Input/Manipulation 2.21 2.21 7.51 5590.46 Elevation of bottom of tailings (liner) (ft amsl)
0.468
rd Cσ Kσ Ka rd Dr f Kσ Ka Avg
(ft) (ft amsl) TSF TSF TSF (ft) PSI (%) (tcf) (pcf) (tsf)(tsf)(tsf) 1=Yes TSF MPa % (tsf)(tsf)(tsf) 1=Yes FoS m
0=No 0=No (ft/sec) (tcf) tsf tsf (%)
P = γeff*(Geff
/Gmax)
(tsf)
Volumetric Strain for Design Event, εv (%)
Incrementa
l Consolidation (ft)
CN
Volumetric
Strain for
Design
Event, εv (%)
Incremental Consolidation (ft)
TOTAL SEISMIC SETTLEMENT (FT):
Midpoint Depth at t1, z1
Shear Wave Velocity, Vs
Soil Density, ρ (tcf)b
Threshhol
d Shear Strain, γtv
(%)
Volumetri
c Strain at
15 Cycles,
εc-15 (%)Rc
Plasticity Index, PI g1 g2
Shear Strain, γ (%)a
Effective Stress at Bottom of Layer
Effective Stress at Midpoint of Layer FINAL COVER
Erosion Protection Layer
Water Storage/Rooting Zone Layer
qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Equil Pore Pressure at Midpoint of Layer (tsf)
Max Shear
Strain
Modulus,
Gmax (tsf)
Unit Weight (tcf)
Unit Weight (pcf)
Total Stress at Bottom of Layer
Total Stress at Midpoint of Layer
Equil Pore Pressure at Bottom of Layer
Cyclic Resistance Ratio
FoS
Cyclic Stress Ratio
FoS
∆qc1n qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Threshhol
d Shear
Strain, γtv (%)
Volumetric Strain at 15 Cycles, εc-15 (%)RcCNg1g2
Shear
Strain, γ ab
Seismic Settlement Analysis - Stewart et al (2004)
Shear Wave Velocity, Vs
High Compaction Layer
Platform/Random Fill Layer
Pw (u2)Pw (u2)
2013 CPT Data from ConeTec CPT Data Interpretations
fs/qt
Material
Type (as determined by fines
Unit Weight Unit Weight
Total
Stress
at time of CPT
Depth
at time of CPT Elevation qt fs qc
Effective
Stress at
time of CPT
Saturated
at time of CPT
Type Index,
Ic FC
Youd, et al (2001)
Max. Horiz. Acceleration, Amax/g: 0.15
Earthquake Moment Magnitude, M:
Idriss and Boulanger (2008)
Max. Horiz. Acceleration, Amax/g:
Earthquake Moment Magnitude, M:
Magnitude Scaling Factor, MSF:
WHITE MESA TAILINGS REPOSITORY LIQUEFACTION AND SEISMIC SETTLEMENT ANALYSES - 2E1 Elev. at Top of Layer (ft)
Elev. At Midpoint of Layer (ft)
Elev. At Bottom of Layer
Thickness of Layer (ft)
5.5
Magnitude Scaling Factor, MSF:
Equil
Pore
Pressure at time of
Conditions at t1 Liquefaction Triggering AnalysesEquil
Pore Pressure at t1CN qc1 qc1 qc1N
Normalized
Cone
Penetration Resistance, Qt
Normalize
d Friction
Ratio, Fr (%)
Total Stress at t1 Liquefiable?1=Yes
2=No
Cyclic Stress RatioEffective Stress at t1
Saturated at t1
Idriss & Boulanger (2008)
CSR
M=7.5,
s'v=1atm
Kc
Scaling Factor for stress ration, rm
Volumetric Strain Ratio for Site-Specific Design Earthq
Equiv. Number of Uniform Strain Cycles, N
Youd et al. (2001)
CSR
M=7.5,
s'v=1atm
Depth at t1, z1
Soil Density, ρ
Maximum Shear Strain
Modulus,
Gmax
P =
γeff*(Geff/Gmax)
Plastici
ty Index, PI
17.388 5602.56 12.5 0.226 12.4 18.9 8.17 1.81%Sand-Slime Tailing 0.059 119.0 0.96 0.33 0.64 1 1.27 15.676 217.89 18.38 18 1.96% 2.7 47% 1.54 0.00 1.54 0 0.90 0.05 0.97 1.0 0.050 36.75 55.13 0.083 1.64 0.93 0.25 0.80 1.06 1.0 0.039 3.85 70.78 0.113 3.71 2.68 2 8.50 500 1.8E-03 4.6E+02 3.3E-04 10 0.227 6757 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.22% 0.0036
17.552 5602.40 10.1 0.119 9.9 19.4 8.42 1.18%Sand-Slime Tailing 0.059 119.0 0.97 0.33 0.64 1 1.26 12.535 174.24 14.74 14 1.31% 2.7 47% 1.55 0.00 1.55 0 0.90 0.05 0.97 1.0 0.050 35.47 50.21 0.078 1.54 0.93 0.22 0.80 1.06 1.0 0.039 3.82 56.34 0.097 3.16 2.35 2 8.55 500 1.8E-03 4.6E+02 3.3E-04 10 0.227 6740 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.25% 0.0037
17.716 5602.23 11.0 0.133 10.8 23.1 10.02 1.21%Sand-Slime Tailing 0.059 119.0 0.98 0.34 0.64 1 1.25 13.593 188.94 16.00 16 1.33% 2.6 47% 1.56 0.00 1.56 0 0.89 0.05 0.97 1.0 0.050 35.91 51.91 0.079 1.58 0.93 0.23 0.80 1.06 1.0 0.039 3.62 57.91 0.098 3.18 2.38 2 8.60 500 1.8E-03 4.6E+02 3.3E-04 10 0.228 6722 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.28% 0.0037
17.880 5602.07 10.6 0.104 10.5 25.6 11.08 0.98%Sand-Slime Tailing 0.059 119.0 0.99 0.34 0.65 1 1.25 13.043 181.30 15.38 15 1.08% 2.6 47% 1.57 0.00 1.57 0 0.89 0.05 0.97 1.0 0.050 35.70 51.08 0.079 1.57 0.93 0.23 0.80 1.06 1.0 0.039 3.44 52.94 0.094 3.02 2.29 2 8.65 500 1.8E-03 4.6E+02 3.3E-04 10 0.228 6705 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.31% 0.0038
18.044 5601.91 15.6 0.215 15.4 27.3 11.85 1.38%Sand-Slime Tailing 0.059 119.0 1.00 0.35 0.65 1 1.24 19.083 265.26 22.41 22 1.47% 2.5 47% 1.58 0.00 1.58 0 0.89 0.05 0.97 1.0 0.050 38.16 60.57 0.088 1.77 0.93 0.27 0.80 1.06 1.0 0.039 2.95 66.15 0.107 3.42 2.60 2 8.70 500 1.8E-03 4.6E+02 3.3E-04 10 0.228 6688 0.09% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.34% 0.0038
18.208 5601.74 11.4 0.182 11.3 22.1 9.59 1.59%Sand-Slime Tailing 0.059 119.0 1.01 0.35 0.66 1 1.23 13.923 193.53 16.37 16 1.75% 2.7 47% 1.59 0.00 1.59 0 0.89 0.05 0.97 1.0 0.050 36.04 52.41 0.080 1.60 0.93 0.23 0.80 1.06 1.0 0.039 4.00 65.53 0.106 3.37 2.49 2 8.75 500 1.8E-03 4.6E+02 3.4E-04 10 0.229 6671 0.09% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.37% 0.0039
18.372 5601.58 9.5 0.143 9.3 33.5 14.51 1.50%Sand-Slime Tailing 0.059 119.0 1.02 0.36 0.66 1 1.23 11.418 158.71 13.56 13 1.68% 2.8 47% 1.60 0.00 1.60 0 0.89 0.05 0.97 1.0 0.050 35.06 48.62 0.076 1.53 0.93 0.21 0.80 1.05 1.0 0.039 4.53 61.47 0.102 3.21 2.37 2 8.80 500 1.8E-03 4.6E+02 3.4E-04 10 0.229 6654 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.39% 0.0039
18.537 5601.41 16.2 0.140 15.9 56.4 24.43 0.86%Sand-Slime Tailing 0.059 119.0 1.03 0.36 0.67 1 1.22 19.318 268.52 22.93 23 0.92% 2.4 47% 1.61 0.00 1.61 0 0.89 0.05 0.97 1.0 0.050 38.34 61.28 0.089 1.80 0.93 0.28 0.80 1.05 1.0 0.039 2.40 55.11 0.096 3.00 2.40 2 8.85 500 1.8E-03 4.6E+02 3.4E-04 10 0.229 6637 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.42% 0.0040
18.701 5601.25 17.9 0.177 17.7 23.0 9.97 0.99%Sand-Slime Tailing 0.059 119.0 1.04 0.37 0.67 1 1.21 21.370 297.05 25.02 25 1.05% 2.4 47% 1.62 0.00 1.62 0 0.89 0.06 0.96 1.0 0.049 39.08 64.10 0.093 1.87 0.93 0.29 0.80 1.05 1.0 0.039 2.38 59.44 0.100 3.10 2.49 2 8.90 500 1.8E-03 4.6E+02 3.4E-04 10 0.230 6620 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.45% 0.0040
18.865 5601.09 14.9 0.143 14.7 24.5 10.62 0.96%Sand-Slime Tailing 0.059 119.0 1.05 0.37 0.68 1 1.21 17.787 247.23 20.87 20 1.03% 2.5 47% 1.63 0.00 1.63 0 0.89 0.05 0.97 1.0 0.049 37.62 58.49 0.086 1.74 0.93 0.26 0.80 1.05 1.0 0.039 2.70 56.46 0.097 3.00 2.37 2 8.95 500 1.8E-03 4.6E+02 3.4E-04 10 0.230 6604 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.48% 0.0041
19.029 5600.92 18.2 0.189 18.2 13.4 5.82 1.04%Sand-Slime Tailing 0.059 119.0 1.06 0.38 0.68 1 1.19 21.656 301.01 25.27 25 1.10% 2.4 47% 1.64 0.00 1.64 0 0.88 0.06 0.96 1.0 0.049 39.16 64.43 0.093 1.89 0.93 0.29 0.80 1.05 1.0 0.039 2.41 60.84 0.101 3.11 2.50 2 9.00 500 1.8E-03 4.6E+02 3.5E-04 10 0.230 6588 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.51% 0.0041
19.193 5600.76 15.7 0.226 15.6 17.1 7.41 1.44%Sand-Slime Tailing 0.059 119.0 1.07 0.39 0.69 1 1.19 18.615 258.74 21.77 21 1.54% 2.6 47% 1.65 0.00 1.65 0 0.88 0.05 0.97 1.0 0.049 37.94 59.70 0.088 1.78 0.93 0.27 0.80 1.05 1.0 0.039 3.11 67.59 0.109 3.32 2.55 2 9.05 500 1.8E-03 4.6E+02 3.5E-04 10 0.231 6572 0.09% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.54% 0.0042
19.357 5600.59 12.4 0.221 12.1 42.6 18.48 1.79%Sand-Slime Tailing 0.059 119.0 1.08 0.39 0.69 1 1.19 14.370 199.75 17.06 16 1.96% 2.7 47% 1.66 0.00 1.66 0 0.88 0.05 0.97 1.0 0.049 36.28 53.34 0.081 1.64 0.93 0.24 0.80 1.04 1.0 0.039 4.12 70.25 0.112 3.41 2.52 2 9.10 500 1.8E-03 4.6E+02 3.5E-04 10 0.231 6556 0.09% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.57% 0.0042
19.521 5600.43 15.2 0.223 14.8 64.4 27.89 1.47%Sand-Slime Tailing 0.059 119.0 1.09 0.40 0.70 1 1.18 17.474 242.88 20.85 20 1.58% 2.6 47% 1.67 0.00 1.67 0 0.88 0.05 0.96 1.0 0.049 37.61 58.46 0.086 1.76 0.93 0.26 0.80 1.04 1.0 0.039 3.25 67.72 0.109 3.29 2.52 2 9.15 500 1.8E-03 4.6E+02 3.5E-04 10 0.232 6540 0.10% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.60% 0.0043
19.685 5600.27 12.3 0.248 12.1 35.7 15.47 2.01%Sand-Slime Tailing 0.059 119.0 1.10 0.40 0.70 1 1.18 14.233 197.84 16.84 16 2.21% 2.8 47% 1.68 0.00 1.68 0 0.88 0.05 0.97 1.0 0.049 36.21 53.04 0.080 1.64 0.93 0.24 0.80 1.04 1.0 0.039 4.39 73.96 0.118 3.53 2.59 2 9.20 538 1.8E-03 5.3E+02 3.1E-04 10 0.232 6524 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.81% 0.0030
19.849 5600.10 12.3 0.010 12.0 55.6 24.11 0.08%Sand-Slime Tailing 0.059 119.0 1.11 0.41 0.70 1 1.17 14.008 194.71 16.74 16 0.09% 2.3 47% 1.69 0.00 1.69 0 0.88 0.05 0.97 1.0 0.049 36.17 52.91 0.080 1.64 0.93 0.24 0.80 1.04 1.0 0.039 1.87 31.30 0.076 2.27 1.96 2 9.25 538 1.8E-03 5.3E+02 3.1E-04 10 0.232 6508 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.84% 0.0030
20.013 5599.94 16.7 0.105 16.5 32.1 13.89 0.63%Sand-Slime Tailing 0.059 119.0 1.12 0.41 0.71 1 1.16 19.178 266.58 22.54 22 0.67% 2.4 47% 1.70 0.00 1.70 0 0.88 0.05 0.96 1.0 0.049 38.21 60.75 0.089 1.82 0.93 0.27 0.80 1.04 1.0 0.039 2.20 49.63 0.091 2.72 2.27 2 9.30 538 1.8E-03 5.3E+02 3.1E-04 10 0.233 6493 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.86% 0.0031
20.177 5599.77 11.0 0.151 11.0 8.6 3.72 1.37%Sand-Slime Tailing 0.059 119.0 1.13 0.42 0.71 1 1.16 12.696 176.48 14.82 14 1.53% 2.7 47% 1.71 0.00 1.71 0 0.87 0.05 0.97 1.0 0.049 35.50 50.32 0.078 1.59 0.92 0.22 0.80 1.04 1.0 0.039 4.13 61.27 0.101 3.00 2.30 2 9.35 538 1.8E-03 5.3E+02 3.1E-04 10 0.233 6477 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.88% 0.0031
20.341 5599.61 16.5 0.104 16.4 12.3 5.34 0.63%Sand-Slime Tailing 0.059 119.0 1.14 0.42 0.72 1 1.15 18.850 262.02 22.00 21 0.68% 2.4 47% 1.72 0.00 1.72 0 0.87 0.05 0.96 1.0 0.049 38.02 60.01 0.088 1.81 0.92 0.27 0.80 1.04 1.0 0.039 2.25 49.58 0.091 2.69 2.25 2 9.40 538 1.8E-03 5.3E+02 3.1E-04 10 0.233 6462 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.91% 0.0031
20.505 5599.45 26.3 0.244 26.2 16.8 7.29 0.93%Sand-Slime Tailing 0.059 119.0 1.15 0.43 0.72 1 1.13 29.559 410.87 34.47 35 0.97% 2.3 47% 1.73 0.00 1.73 0 0.87 0.06 0.96 1.0 0.048 42.39 76.86 0.108 2.25 0.92 0.34 0.80 1.04 1.0 0.039 1.88 64.63 0.105 3.08 2.66 2 9.45 538 1.8E-03 5.3E+02 3.2E-04 10 0.234 6447 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.93% 0.0032
20.669 5599.28 18.0 0.319 18.0 11.3 4.89 1.77%Sand-Slime Tailing 0.059 119.0 1.16 0.43 0.73 1 1.14 20.422 283.87 23.81 23 1.89% 2.6 47% 1.74 0.00 1.74 0 0.87 0.05 0.96 1.0 0.048 38.65 62.46 0.091 1.87 0.92 0.28 0.80 1.03 1.0 0.039 3.22 76.70 0.122 3.55 2.71 2 9.50 538 1.8E-03 5.3E+02 3.2E-04 10 0.234 6432 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.95% 0.0032
20.833 5599.12 15.8 0.362 15.7 15.0 6.52 2.29%Sand-Slime Tailing 0.059 119.0 1.17 0.44 0.73 1 1.13 17.855 248.19 20.86 20 2.47% 2.7 47% 1.75 0.00 1.75 0 0.87 0.05 0.96 1.0 0.048 37.62 58.48 0.086 1.78 0.92 0.26 0.80 1.03 1.0 0.039 4.01 83.73 0.135 3.90 2.84 2 9.55 538 1.8E-03 5.3E+02 3.2E-04 10 0.234 6417 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.97% 0.0032
20.997 5598.95 13.5 0.268 13.3 25.6 11.09 1.99%Sand-Slime Tailing 0.059 119.0 1.18 0.44 0.74 1 1.13 15.024 208.84 17.66 17 2.18% 2.7 47% 1.76 0.00 1.76 0 0.87 0.05 0.96 1.0 0.048 36.50 54.15 0.082 1.69 0.92 0.24 0.80 1.03 1.0 0.039 4.26 75.26 0.120 3.45 2.57 2 9.60 538 1.8E-03 5.3E+02 3.2E-04 10 0.235 6402 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 2.00% 0.0033
21.161 5598.79 13.5 0.247 13.3 33.1 14.34 1.83%Sand-Slime Tailing 0.059 119.0 1.19 0.45 0.74 1 1.12 14.951 207.82 17.63 17 2.00% 2.7 47% 1.77 0.00 1.77 0 0.87 0.05 0.96 1.0 0.048 36.49 54.12 0.082 1.69 0.92 0.24 0.80 1.03 1.0 0.039 4.11 72.54 0.115 3.32 2.50 2 9.65 538 1.8E-03 5.3E+02 3.2E-04 10 0.235 6388 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 2.02% 0.0033
21.325 5598.62 14.2 0.171 14.0 32.9 14.27 1.20%Sand-Slime Tailing 0.059 119.0 1.20 0.45 0.75 1 1.12 15.661 217.68 18.46 17 1.31% 2.6 47% 1.78 0.00 1.78 0 0.87 0.05 0.96 1.0 0.048 36.77 55.23 0.083 1.72 0.91 0.25 0.80 1.03 1.0 0.039 3.32 61.36 0.101 2.90 2.31 2 9.70 538 1.8E-03 5.3E+02 3.2E-04 10 0.235 6373 0.08% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 2.04% 0.0034
21.489 5598.46 21.5 0.169 21.3 27.8 12.05 0.79%Sand-Slime Tailing 0.059 119.0 1.21 0.46 0.75 1 1.11 23.539 327.20 27.56 27 0.83% 2.3 47% 1.79 0.00 1.79 0 0.86 0.06 0.96 1.0 0.048 39.97 67.53 0.097 2.02 0.91 0.30 0.80 1.03 1.0 0.039 2.07 57.16 0.097 2.77 2.39 2 9.75 538 1.8E-03 5.3E+02 3.3E-04 10 0.236 6359 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.07% 0.0034
21.653 5598.30 19.5 0.201 19.4 19.6 8.49 1.03%Sand-Slime Tailing 0.059 119.0 1.22 0.46 0.76 1 1.10 21.372 297.07 24.98 24 1.10% 2.4 47% 1.80 0.00 1.80 0 0.86 0.06 0.96 1.0 0.048 39.06 64.04 0.092 1.93 0.91 0.29 0.80 1.03 1.0 0.039 2.48 61.83 0.102 2.89 2.41 2 9.80 538 1.8E-03 5.3E+02 3.3E-04 10 0.236 6344 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.09% 0.0034
21.817 5598.13 15.2 0.196 15.1 19.5 8.45 1.29%Sand-Slime Tailing 0.059 119.0 1.23 0.47 0.76 1 1.10 16.637 231.26 19.48 18 1.40% 2.6 47% 1.81 0.00 1.81 0 0.86 0.05 0.96 1.0 0.048 37.13 56.61 0.084 1.76 0.91 0.25 0.80 1.03 1.0 0.039 3.29 64.11 0.105 2.95 2.35 2 9.85 538 1.8E-03 5.3E+02 3.3E-04 10 0.236 6330 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.11% 0.0035
21.981 5597.97 13.5 0.188 13.3 22.6 9.79 1.40%Sand-Slime Tailing 0.059 119.0 1.24 0.47 0.77 1 1.10 14.595 202.88 17.13 16 1.54% 2.7 47% 1.82 0.00 1.82 0 0.86 0.05 0.96 1.0 0.048 36.31 53.44 0.081 1.69 0.91 0.24 0.80 1.02 1.0 0.039 3.77 64.60 0.105 2.95 2.32 2 9.90 538 1.8E-03 5.3E+02 3.3E-04 10 0.236 6316 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.14% 0.0035
22.145 5597.80 12.1 0.166 12.0 27.8 12.05 1.37%Sand-Slime Tailing 0.059 119.0 1.25 0.48 0.77 1 1.09 13.053 181.44 15.38 14 1.52% 2.7 47% 1.83 0.00 1.83 0 0.86 0.05 0.96 1.0 0.048 35.70 51.08 0.079 1.64 0.91 0.23 0.80 1.02 1.0 0.039 4.08 62.70 0.103 2.87 2.26 2 9.95 538 1.8E-03 5.3E+02 3.3E-04 10 0.237 6302 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.16% 0.0035
22.309 5597.64 9.5 0.208 9.3 33.0 14.31 2.19%Slime Tailings 0.057 113.1 1.26 0.48 0.77 1 1.09 10.097 140.34 11.99 11 2.52% 2.9 71% 1.84 0.00 1.84 0 0.86 0.05 0.96 1.0 0.048 34.26 46.25 0.074 1.55 0.91 0.20 0.80 1.02 1.0 0.039 6.02 72.19 0.115 3.20 2.37 2 10.00 538 1.8E-03 5.1E+02 3.5E-04 16 0.488 5186 0.10% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.61% 0.0043
22.473 5597.48 10.2 0.214 9.9 57.5 24.93 2.09%Slime Tailings 0.057 113.1 1.27 0.49 0.78 1 1.08 10.671 148.33 12.85 12 2.39% 2.9 71% 1.85 0.00 1.85 0 0.86 0.05 0.96 1.0 0.048 34.56 47.41 0.075 1.57 0.91 0.21 0.80 1.02 1.0 0.039 5.61 72.09 0.115 3.18 2.38 2 10.05 538 1.8E-03 5.1E+02 3.5E-04 16 0.488 5176 0.10% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.63% 0.0043
22.638 5597.31 12.2 0.168 12.0 43.6 18.90 1.37%Sand-Slime Tailing 0.059 119.0 1.28 0.49 0.78 1 1.08 12.884 179.09 15.30 14 1.53% 2.7 47% 1.86 0.00 1.86 0 0.85 0.05 0.96 1.0 0.048 35.67 50.97 0.078 1.65 0.90 0.23 0.80 1.02 1.0 0.039 4.11 62.96 0.103 2.85 2.25 2 10.10 538 1.8E-03 5.3E+02 3.4E-04 10 0.238 6262 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.23% 0.0037
22.802 5597.15 15.7 0.124 15.5 28.3 12.28 0.79%Sand-Slime Tailing 0.059 119.0 1.29 0.50 0.79 1 1.07 16.653 231.47 19.56 18 0.86% 2.5 47% 1.87 0.00 1.87 0 0.85 0.05 0.96 1.0 0.047 37.16 56.72 0.084 1.78 0.90 0.26 0.80 1.02 1.0 0.039 2.72 53.26 0.094 2.58 2.18 2 10.15 538 1.8E-03 5.3E+02 3.4E-04 10 0.238 6248 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.25% 0.0037
22.966 5596.98 18.3 0.115 18.2 21.4 9.29 0.63%Sand-Slime Tailing 0.059 119.0 1.29 0.50 0.79 1 1.07 19.355 269.03 22.65 21 0.68% 2.4 47% 1.88 0.00 1.88 0 0.85 0.05 0.96 1.0 0.047 38.24 60.89 0.089 1.88 0.90 0.27 0.80 1.02 1.0 0.039 2.24 50.80 0.092 2.52 2.20 2 10.20 538 1.8E-03 5.3E+02 3.4E-04 10 0.238 6235 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.27% 0.0037
23.130 5596.82 17.6 0.122 17.5 22.6 9.77 0.69%Sand-Slime Tailing 0.059 119.0 1.30 0.51 0.80 1 1.06 18.534 257.62 21.70 20 0.75% 2.4 47% 1.89 0.00 1.89 0 0.85 0.05 0.96 1.0 0.047 37.91 59.61 0.087 1.86 0.90 0.27 0.80 1.02 1.0 0.039 2.40 52.09 0.093 2.54 2.20 2 10.25 538 1.8E-03 5.3E+02 3.4E-04 10 0.239 6221 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.30% 0.0038
23.294 5596.66 16.7 0.117 16.6 23.3 10.10 0.70%Sand-Slime Tailing 0.059 119.0 1.31 0.51 0.80 1 1.06 17.505 243.32 20.51 19 0.76% 2.4 47% 1.89 0.00 1.89 0 0.85 0.05 0.96 1.0 0.047 37.49 58.00 0.086 1.82 0.90 0.26 0.80 1.01 1.0 0.039 2.52 51.71 0.093 2.52 2.17 2 10.30 538 1.8E-03 5.3E+02 3.5E-04 10 0.239 6208 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.32% 0.0038
23.458 5596.49 18.6 0.112 18.5 23.3 10.10 0.60%Sand-Slime Tailing 0.059 119.0 1.32 0.52 0.81 1 1.05 19.432 270.11 22.75 21 0.65% 2.4 47% 1.90 0.00 1.90 0 0.85 0.05 0.96 1.0 0.047 38.28 61.03 0.089 1.90 0.90 0.28 0.80 1.01 1.0 0.039 2.21 50.28 0.092 2.48 2.19 2 10.35 538 1.8E-03 5.3E+02 3.5E-04 10 0.239 6195 0.09% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.35% 0.0038
23.622 5596.33 24.6 0.061 24.5 18.8 8.15 0.25%Sand-Slime Tailing 0.059 119.0 1.33 0.52 0.81 1 1.04 25.556 355.23 29.82 29 0.26% 2.1 47% 1.91 0.00 1.91 0 0.85 0.06 0.95 1.0 0.047 40.76 70.59 0.100 2.15 0.90 0.32 0.80 1.01 1.0 0.039 1.48 44.02 0.087 2.33 2.24 2 10.40 538 1.8E-03 5.3E+02 3.5E-04 10 0.240 6182 0.09% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.37% 0.0039
23.786 5596.16 27.8 0.103 27.7 11.3 4.89 0.37%Sand-Slime Tailing 0.059 119.0 1.34 0.53 0.82 1 1.04 28.802 400.34 33.54 32 0.39% 2.1 47% 1.92 0.00 1.92 0 0.85 0.06 0.95 1.0 0.046 42.06 75.60 0.107 2.30 0.89 0.33 0.80 1.01 1.0 0.039 1.49 50.05 0.092 2.45 2.38 2 10.45 538 1.8E-03 5.3E+02 3.5E-04 10 0.240 6169 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.39% 0.0039
23.950 5596.00 23.4 0.209 23.4 12.0 5.22 0.89%Sand-Slime Tailing 0.059 119.0 1.35 0.53 0.82 1 1.04 24.226 336.75 28.23 27 0.95% 2.4 47% 1.93 0.00 1.93 0 0.84 0.06 0.95 1.0 0.047 40.20 68.43 0.098 2.10 0.89 0.31 0.80 1.01 1.0 0.039 2.17 61.33 0.101 2.70 2.40 2 10.50 538 1.8E-03 5.3E+02 3.5E-04 10 0.240 6156 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.42% 0.0040
24.114 5595.84 18.1 0.289 18.0 13.9 6.03 1.60%Sand-Slime Tailing 0.059 119.0 1.36 0.54 0.82 1 1.03 18.635 259.03 21.75 20 1.73% 2.6 47% 1.94 0.00 1.94 0 0.84 0.05 0.96 1.0 0.047 37.93 59.68 0.087 1.88 0.89 0.27 0.80 1.01 1.0 0.039 3.37 73.35 0.117 3.10 2.49 2 10.55 538 1.8E-03 5.3E+02 3.5E-04 10 0.241 6143 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.44% 0.0040
24.278 5595.67 18.2 0.238 18.1 15.7 6.80 1.31%Sand-Slime Tailing 0.059 119.0 1.37 0.54 0.83 1 1.03 18.616 258.76 21.74 20 1.42% 2.6 47% 1.95 0.00 1.95 0 0.84 0.05 0.96 1.0 0.046 37.93 59.66 0.087 1.88 0.89 0.27 0.80 1.01 1.0 0.039 3.10 67.33 0.108 2.87 2.37 2 10.60 538 1.8E-03 5.3E+02 3.6E-04 10 0.241 6130 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.46% 0.0040
24.442 5595.51 24.4 0.195 24.3 16.8 7.27 0.80%Sand-Slime Tailing 0.059 119.0 1.38 0.55 0.83 1 1.02 24.907 346.21 29.05 28 0.85% 2.3 47% 1.96 0.00 1.96 0 0.84 0.06 0.95 1.0 0.046 40.49 69.54 0.099 2.14 0.89 0.31 0.80 1.01 1.0 0.039 2.05 59.56 0.100 2.62 2.38 2 10.65 538 1.8E-03 5.3E+02 3.6E-04 10 0.241 6118 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.49% 0.0041
24.606 5595.34 34.4 0.343 34.3 15.2 6.60 1.00%Sand-Slime Tailing 0.059 119.0 1.39 0.55 0.84 1 1.02 34.889 484.95 40.63 39 1.04% 2.2 47% 1.97 0.00 1.97 1 0.84 0.07 0.95 1.0 0.046 44.55 85.19 0.120 2.61 0.89 0.37 0.80 1.01 1.0 0.039 1.79 72.69 0.116 3.03 2.82 2 10.70 538 1.8E-03 5.3E+02 3.6E-04 10 0.241 6110 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.51% 0.0041
24.770 5595.18 20.5 0.393 20.4 14.3 6.19 1.91%Sand-Slime Tailing 0.059 119.0 1.40 0.56 0.84 1 1.02 20.768 288.68 24.23 23 2.05% 2.6 47% 1.98 0.01 1.97 1 0.84 0.06 0.95 1.0 0.046 38.80 63.02 0.091 1.97 0.89 0.28 0.80 1.00 1.0 0.039 3.40 82.30 0.132 3.43 2.70 2 10.75 594 1.8E-03 6.5E+02 3.0E-04 10 0.241 6104 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.54% 0.0025
24.934 5595.02 16.7 0.314 16.6 16.6 7.19 1.89%Sand-Slime Tailing 0.059 119.0 1.41 0.56 0.85 1 1.01 16.751 232.84 19.58 18 2.06% 2.7 47% 1.99 0.01 1.98 1 0.84 0.05 0.96 1.0 0.047 37.17 56.75 0.084 1.81 0.89 0.26 0.80 1.00 1.0 0.039 3.96 77.45 0.123 3.18 2.50 2 10.80 594 1.8E-03 6.5E+02 3.0E-04 10 0.242 6098 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.56% 0.0026
25.098 5594.85 14.6 0.266 14.4 26.3 11.40 1.83%Sand-Slime Tailing 0.059 119.0 1.42 0.57 0.85 1 1.01 14.503 201.59 17.04 15 2.03% 2.7 47% 2.00 0.02 1.98 1 0.83 0.05 0.96 1.0 0.047 36.28 53.31 0.081 1.73 0.88 0.24 0.80 1.00 1.0 0.039 4.34 73.97 0.118 3.02 2.38 2 10.85 594 1.8E-03 6.5E+02 3.0E-04 10 0.242 6092 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.58% 0.0026
25.262 5594.69 24.0 0.214 23.8 30.2 13.07 0.89%Sand-Slime Tailing 0.059 119.0 1.43 0.57 0.86 1 1.00 23.851 331.52 27.92 26 0.95% 2.4 47% 2.01 0.02 1.99 1 0.83 0.06 0.95 1.0 0.046 40.09 68.01 0.097 2.09 0.88 0.31 0.80 1.00 1.0 0.039 2.21 61.74 0.102 2.60 2.35 2 10.90 594 1.8E-03 6.5E+02 3.0E-04 10 0.242 6086 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.60% 0.0026
25.426 5594.52 24.6 0.322 24.5 24.1 10.42 1.31%Sand-Slime Tailing 0.059 119.0 1.44 0.58 0.86 1 1.00 24.455 339.93 28.58 27 1.39% 2.5 47% 2.02 0.03 1.99 1 0.83 0.06 0.95 1.0 0.046 40.32 68.90 0.098 2.12 0.88 0.31 0.80 1.00 1.0 0.039 2.54 72.71 0.116 2.93 2.52 2 10.95 594 1.8E-03 6.5E+02 3.0E-04 10 0.242 6080 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.62% 0.0027
25.590 5594.36 18.9 0.380 18.7 25.6 11.07 2.01%Sand-Slime Tailing 0.059 119.0 1.45 0.58 0.87 1 1.00 18.640 259.10 21.83 20 2.18% 2.7 47% 2.03 0.03 2.00 1 0.83 0.05 0.95 1.0 0.047 37.96 59.79 0.088 1.88 0.88 0.27 0.80 1.00 1.0 0.040 3.77 82.36 0.132 3.32 2.60 2 11.00 594 1.8E-03 6.5E+02 3.0E-04 10 0.242 6074 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.64% 0.0027
25.754 5594.20 17.6 0.410 17.4 32.3 14.00 2.33%Sand-Slime Tailing 0.059 119.0 1.46 0.59 0.87 1 0.99 17.234 239.55 20.25 19 2.54% 2.7 47% 2.04 0.04 2.00 1 0.83 0.05 0.96 1.0 0.047 37.40 57.65 0.085 1.83 0.88 0.26 0.80 1.00 1.0 0.040 4.27 86.54 0.140 3.51 2.67 2 11.05 594 1.8E-03 6.5E+02 3.1E-04 10 0.242 6068 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.66% 0.0027
25.918 5594.03 15.1 0.388 14.8 47.4 20.55 2.56%Slime Tailings 0.057 113.1 1.47 0.59 0.88 1 0.99 14.652 203.67 17.36 16 2.84% 2.8 71% 2.05 0.04 2.01 1 0.83 0.05 0.96 1.0 0.047 36.13 53.49 0.081 1.73 0.88 0.24 0.80 1.00 1.0 0.040 5.00 86.83 0.141 3.50 2.62 2 11.10 594 1.8E-03 6.2E+02 3.2E-04 16 0.493 5002 0.08% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 2.05% 0.0034
26.082 5593.87 12.7 0.338 12.4 51.7 22.40 2.65%Slime Tailings 0.057 113.1 1.48 0.60 0.88 1 0.98 12.217 169.82 14.56 13 3.00% 2.9 71% 2.06 0.05 2.01 1 0.83 0.05 0.96 1.0 0.047 35.16 49.72 0.077 1.65 0.88 0.22 0.80 1.00 1.0 0.040 5.79 84.24 0.136 3.35 2.50 2 11.15 594 1.8E-03 6.2E+02 3.2E-04 16 0.493 4998 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.06% 0.0034
26.246 5593.70 17.4 0.296 17.0 74.4 32.24 1.70%Sand-Slime Tailing 0.059 119.0 1.49 0.61 0.88 1 0.98 16.605 230.81 19.81 18 1.86% 2.7 47% 2.07 0.05 2.01 1 0.82 0.05 0.96 1.0 0.047 37.25 57.06 0.085 1.81 0.87 0.26 0.80 0.99 1.0 0.040 3.77 74.76 0.119 2.92 2.37 2 11.20 594 1.8E-03 6.5E+02 3.1E-04 10 0.243 6052 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.71% 0.0028
26.410 5593.54 15.8 0.331 15.5 39.8 17.23 2.10%Sand-Slime Tailing 0.059 119.0 1.50 0.61 0.89 1 0.98 15.162 210.75 17.89 16 2.32% 2.8 47% 2.08 0.06 2.02 1 0.82 0.05 0.96 1.0 0.047 36.58 54.47 0.082 1.75 0.87 0.24 0.80 0.99 1.0 0.040 4.48 80.16 0.128 3.13 2.44 2 11.25 594 1.8E-03 6.5E+02 3.1E-04 10 0.243 6046 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.73% 0.0028
26.574 5593.38 15.8 0.404 15.3 86.3 37.40 2.55%Slime Tailings 0.057 113.1 1.51 0.62 0.89 1 0.97 14.863 206.60 17.87 16 2.82% 2.8 71% 2.09 0.07 2.02 1 0.82 0.05 0.96 1.0 0.047 36.31 54.18 0.082 1.74 0.87 0.24 0.80 0.99 1.0 0.040 4.91 87.67 0.143 3.47 2.60 2 11.30 594 1.8E-03 6.2E+02 3.3E-04 16 0.494 4984 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.13% 0.0035
26.739 5593.21 16.2 0.416 16.0 39.0 16.89 2.56%Slime Tailings 0.057 113.1 1.52 0.62 0.90 1 0.97 15.487 215.27 18.26 16 2.83% 2.8 71% 2.10 0.07 2.03 1 0.82 0.05 0.96 1.0 0.047 36.45 54.71 0.082 1.75 0.87 0.25 0.80 0.99 1.0 0.040 4.84 88.43 0.144 3.49 2.62 2 11.35 594 1.8E-03 6.2E+02 3.3E-04 16 0.494 4980 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.15% 0.0035
26.903 5593.05 19.8 0.353 19.4 59.3 25.69 1.78%Sand-Slime Tailing 0.059 119.0 1.53 0.63 0.90 1 0.97 18.751 260.63 22.19 20 1.93% 2.6 47% 2.11 0.08 2.03 1 0.82 0.05 0.95 1.0 0.047 38.08 60.28 0.088 1.88 0.87 0.27 0.80 0.99 1.0 0.040 3.55 78.85 0.126 3.02 2.45 2 11.40 594 1.8E-03 6.5E+02 3.2E-04 10 0.243 6030 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.79% 0.0029
27.067 5592.88 25.7 0.481 25.6 31.0 13.43 1.87%Sand-Slime Tailing 0.059 119.0 1.54 0.63 0.91 1 0.96 24.609 342.07 28.80 27 1.99% 2.5 47% 2.12 0.08 2.04 1 0.82 0.06 0.95 1.0 0.047 40.40 69.20 0.099 2.11 0.87 0.31 0.80 0.99 1.0 0.040 3.01 86.67 0.141 3.36 2.73 2 11.45 594 1.8E-03 6.5E+02 3.2E-04 10 0.243 6025 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.81% 0.0030
27.231 5592.72 23.6 0.456 23.3 42.6 18.45 1.93%Sand-Slime Tailing 0.059 119.0 1.55 0.64 0.91 1 0.96 22.359 310.79 26.26 24 2.07% 2.6 47% 2.13 0.09 2.04 1 0.82 0.06 0.95 1.0 0.047 39.51 65.78 0.094 2.02 0.87 0.30 0.80 0.99 1.0 0.040 3.27 85.87 0.139 3.30 2.66 2 11.50 594 1.8E-03 6.5E+02 3.2E-04 10 0.244 6019 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.83% 0.0030
27.395 5592.56 22.8 0.504 22.4 57.1 24.73 2.21%Sand-Slime Tailing 0.059 119.0 1.56 0.64 0.92 1 0.95 21.416 297.69 25.27 23 2.37% 2.6 47% 2.14 0.09 2.05 1 0.82 0.06 0.95 1.0 0.047 39.16 64.43 0.093 1.98 0.87 0.29 0.80 0.99 1.0 0.040 3.59 90.66 0.149 3.52 2.75 2 11.55 594 1.8E-03 6.5E+02 3.2E-04 10 0.244 6013 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.85% 0.0030
27.559 5592.39 17.8 0.379 17.4 71.1 30.80 2.13%Sand-Slime Tailing 0.059 119.0 1.57 0.65 0.92 1 0.95 16.510 229.49 19.67 18 2.33% 2.7 47% 2.15 0.10 2.05 1 0.81 0.05 0.95 1.0 0.047 37.20 56.86 0.084 1.80 0.86 0.26 0.80 0.99 1.0 0.040 4.23 83.15 0.133 3.13 2.46 2 11.60 594 1.8E-03 6.5E+02 3.2E-04 10 0.244 6008 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.87% 0.0031
27.723 5592.23 23.3 0.387 22.9 65.4 28.36 1.66%Sand-Slime Tailing 0.059 119.0 1.58 0.65 0.92 1 0.95 21.674 301.27 25.62 23 1.78% 2.6 47% 2.16 0.10 2.06 1 0.81 0.06 0.95 1.0 0.047 39.29 64.91 0.093 1.99 0.86 0.29 0.80 0.99 1.0 0.040 3.11 79.73 0.127 2.97 2.48 2 11.65 594 1.8E-03 6.5E+02 3.2E-04 10 0.244 6002 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.88% 0.0031
27.887 5592.06 19.0 0.387 18.8 36.8 15.95 2.03%Sand-Slime Tailing 0.059 119.0 1.59 0.66 0.93 1 0.94 17.700 246.03 20.81 19 2.22% 2.7 47% 2.17 0.11 2.06 1 0.81 0.05 0.95 1.0 0.047 37.60 58.41 0.086 1.83 0.86 0.26 0.80 0.98 1.0 0.041 3.98 82.85 0.133 3.08 2.46 2 11.70 594 1.8E-03 6.5E+02 3.2E-04 10 0.244 5996 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.90% 0.0031
28.051 5591.90 23.9 0.387 23.5 75.0 32.50 1.62%Sand-Slime Tailing 0.059 119.0 1.60 0.66 0.93 1 0.94 22.063 306.68 26.14 24 1.73% 2.6 47% 2.18 0.11 2.06 1 0.81 0.06 0.95 1.0 0.047 39.47 65.61 0.094 2.01 0.86 0.30 0.80 0.98 1.0 0.041 3.04 79.33 0.126 2.92 2.46 2 11.75 594 1.8E-03 6.5E+02 3.3E-04 10 0.244 5991 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.92% 0.0032
29.490 5590.46 Sand-Slime Tailing 0.059 119.0 2.26 0.13 2.13 1 12.19 594 1.8E-03 6.5E+02 3.4E-04 10 0.246 5916 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.09% 0.0301
Extra layer added to analyze seismic settlement of tailings below the bottom of CPT investigation.
Liquef_SeismicSettle_30Aug2015.xls Page 17 of 29
Energy Fuels Resources (USA) Inc.White Mesa Mill
Seismic Settlement Analyses
Data File: 13-52106_SP3-1S-BSC-CPT 5608.00 Water surface elevation during CPT investigation (ft 5612.56 Ground Surface Elevation at time of CPT (ft amsl)
Location: White Mesa 2013 CPT Investigation 0.15 5604.28 Water surface elevation at t0 (ft amsl)5620.47 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl)
..\..\..\6.2.3 Field Data\2013 Field Investigation\Conetec Dat 5.5 5595.59 Water surface elevation at t1 (ft amsl) 0.50 Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after pla ###### 5620.22 5619.97 0.50 0.055 110 0.028 0.014 0.00 0.00 0.028 0.014 0.08 508 1.7E-03 4.4E+02 3.0E-06 11 0.068 46696 0.00% 1.20 0.80 0.04% 0.000 0.32 0.133 0.778 0.00% 0.0000
Tailings Sands 1.69 5590.59 Water surface elevation at t2 (ft amsl)3.50 Thickness of Water Storage/Rooting Zone (ft)###### 5618.22 5616.47 3.50 0.054 107 0.215 0.121 0.00 0.00 0.215 0.121 0.69 508 1.7E-03 4.3E+02 2.8E-05 11 0.118 18930 0.00% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
Tailings Sand-Slimes 3.50 Thickness of High Compaction Layer (ft)###### 5614.72 5612.97 3.50 0.060 120 0.424 0.320 0.00 0.00 0.424 0.320 1.75 508 1.9E-03 4.8E+02 6.5E-05 11 0.152 12657 0.01% 0.65 0.75 0.02% 0.000 0.34 0.079 0.765 0.00% 0.0000
Tailings Slimes 1.44 0.41 Thickness of Random/Platform Fill on on top of existing interim cover (ft) ###### 5612.77 5612.56 0.41 0.050 101 0.445 0.434 0.00 0.00 0.445 0.434 2.35 508 1.6E-03 4.0E+02 1.0E-04 11 0.164 11140 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
Interim Cover 0.47 887.10 Additional Stress due to Final Cover Placement, ΔσFC (psf)
Cells Requiring User Input/Manipulation 2.21 2.21 7.51 5590.59 Elevation of bottom of tailings (liner) (ft amsl)
0.235
rd Cσ Kσ Ka rd Dr f Kσ Ka Avg
(ft) (ft amsl) TSF TSF TSF (ft) PSI (%) (tcf) (pcf) (tsf)(tsf)(tsf) 1=Yes TSF MPa % (tsf)(tsf)(tsf) 1=Yes FoS m
0=No 0=No (ft/sec) (tcf) tsf tsf (%)
0.164 5612.40 1.0 0.010 1.0 -0.2 -0.10 1.00%Interim Cover 0.050 100.7 0.01 0.00 0.01 0 1.70 1.700 23.63 1.97 120 1.01% 1.9 51% 0.45 0.00 0.45 0 1.00 0.04 1.02 1.0 0.059 31.01 32.98 0.063 1.07 0.98 0.08 0.80 2.53 1.0 0.017 1.15 2.26 0.052 125.00 63.03 2 2.46 594 1.6E-03 5.5E+02 8.0E-05 11 0.166 10961 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
0.328 5612.23 1.0 0.010 1.0 0.4 0.19 1.00%Interim Cover 0.050 100.7 0.02 0.00 0.02 0 1.70 1.700 23.63 1.98 60 1.01% 2.1 51% 0.46 0.00 0.46 0 1.00 0.04 1.02 1.0 0.059 31.02 32.99 0.063 1.07 0.98 0.08 0.80 2.20 1.0 0.020 1.44 2.85 0.052 63.11 32.09 2 2.51 594 1.6E-03 5.5E+02 8.1E-05 11 0.166 10879 0.01% 2.00 0.65 0.03%0.000 0.34 0.079 0.765 0.00% 0.0000
0.492 5612.07 1.0 0.010 1.0 -0.1 -0.04 1.00%Interim Cover 0.050 100.7 0.02 0.00 0.02 0 1.70 1.700 23.63 1.97 39 1.03% 2.2 51% 0.47 0.00 0.47 0 1.00 0.04 1.02 1.0 0.059 31.01 32.99 0.063 1.07 0.98 0.08 0.80 2.03 1.0 0.021 1.78 3.51 0.053 42.54 21.80 2 2.56 594 1.6E-03 5.5E+02 8.3E-05 11 0.167 10799 0.01% 2.00 0.65 0.03%0.000 0.34 0.079 0.765 0.00% 0.0000
0.656 5611.90 1.0 0.010 1.0 -0.2 -0.08 1.00%Interim Cover 0.050 100.7 0.03 0.00 0.03 0 1.70 1.700 23.63 1.97 29 1.04% 2.4 51% 0.48 0.00 0.48 0 1.00 0.04 1.02 1.0 0.059 31.01 32.98 0.063 1.07 0.98 0.08 0.80 1.92 1.0 0.023 2.14 4.21 0.054 32.26 16.67 2 2.61 594 1.6E-03 5.5E+02 8.4E-05 11 0.168 10720 0.01% 2.00 0.65 0.03%0.000 0.34 0.079 0.765 0.00% 0.0000
0.820 5611.74 5.6 0.026 5.6 14.4 6.23 0.46%Interim Cover 0.050 100.7 0.04 0.00 0.04 0 1.70 9.435 131.15 11.14 136 0.46% 1.6 51% 0.48 0.00 0.48 0 1.00 0.05 1.03 1.0 0.059 34.23 45.36 0.073 1.23 0.98 0.19 0.80 1.84 1.0 0.024 1.00 11.14 0.059 28.61 14.92 2 2.66 594 1.6E-03 5.5E+02 8.6E-05 11 0.169 10644 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
0.984 5611.58 9.5 0.093 9.4 16.6 7.20 0.98%Interim Cover 0.050 100.7 0.05 0.00 0.05 0 1.70 15.929 221.41 18.71 190 0.99% 1.7 51% 0.49 0.00 0.49 0 1.00 0.05 1.03 1.0 0.059 36.88 55.59 0.083 1.40 0.98 0.25 0.80 1.77 1.0 0.024 1.04 19.42 0.066 26.63 14.01 2 2.71 594 1.6E-03 5.5E+02 8.7E-05 11 0.169 10570 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.148 5611.41 19.7 0.245 19.6 13.4 5.80 1.24%Interim Cover 0.050 100.7 0.06 0.00 0.06 0 1.70 33.371 463.86 38.92 340 1.25% 1.6 51% 0.50 0.00 0.50 0 1.00 0.06 1.03 1.0 0.060 43.98 82.90 0.117 1.95 0.98 0.36 0.80 1.72 1.0 0.025 1.00 38.92 0.082 28.43 15.19 2 2.76 594 1.6E-03 5.5E+02 8.9E-05 11 0.170 10497 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.312 5611.25 35.4 0.510 35.4 11.0 4.76 1.44%Interim Cover 0.050 100.7 0.07 0.00 0.07 0 1.70 60.146 836.03 69.99 535 1.44% 1.6 51% 0.51 0.00 0.51 0 1.00 0.08 1.04 1.0 0.060 54.88 124.87 0.190 3.16 0.98 0.48 0.76 1.86 1.0 0.023 1.00 69.99 0.112 33.79 18.47 2 2.81 594 1.6E-03 5.5E+02 9.0E-05 11 0.171 10426 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.476 5611.08 80.0 0.912 79.9 17.9 7.76 1.14%Interim Cover 0.050 100.7 0.07 0.00 0.07 0 1.70 135.830 1888.04 157.98 1075 1.14% 1.4 51% 0.52 0.00 0.52 0 1.00 0.17 1.09 1.0 0.063 85.76 243.74 1.000 15.91 0.98 0.73 0.64 2.43 1.0 0.018 1.00 157.98 0.447 119.94 67.93 2 2.86 594 1.6E-03 5.5E+02 9.2E-05 11 0.172 10357 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.640 5610.92 89.0 1.063 88.9 17.5 7.59 1.19%Interim Cover 0.050 100.7 0.08 0.00 0.08 0 1.70 151.130 2100.71 175.74 1076 1.20% 1.4 51% 0.53 0.00 0.53 0 1.00 0.20 1.10 1.0 0.064 91.99 267.74 1.000 15.73 0.98 0.77 0.62 2.45 1.0 0.018 1.00 175.74 1.000 241.77 128.75 2 2.91 594 1.6E-03 5.5E+02 9.3E-05 11 0.172 10289 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.804 5610.76 96.1 1.232 96.1 7.4 3.19 1.28%Interim Cover 0.050 100.7 0.09 0.00 0.09 0 1.70 163.370 2270.84 189.84 1057 1.28% 1.4 51% 0.53 0.00 0.53 0 1.00 0.23 1.10 1.0 0.064 96.94 286.77 1.000 15.73 0.98 0.80 0.60 2.45 1.0 0.018 1.00 189.84 1.000 219.87 117.80 2 2.96 594 1.6E-03 5.5E+02 9.4E-05 11 0.173 10223 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.968 5610.59 77.7 1.349 77.7 5.5 2.40 1.74%Interim Cover 0.050 100.7 0.10 0.00 0.10 0 1.70 132.073 1835.81 153.46 783 1.74% 1.6 51% 0.54 0.00 0.54 0 1.00 0.16 1.08 1.0 0.062 84.18 237.64 1.000 16.09 0.98 0.72 0.64 2.17 1.0 0.020 1.00 153.46 0.416 83.90 50.00 2 3.01 594 1.6E-03 5.5E+02 9.6E-05 11 0.174 10158 0.01%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.133 5610.43 53.3 1.640 53.3 9.6 4.14 3.07%Interim Cover 0.050 100.7 0.11 0.00 0.11 0 1.70 90.576 1259.01 105.32 496 3.08% 1.9 51% 0.55 0.00 0.55 0 1.00 0.11 1.05 1.0 0.061 67.28 172.60 0.435 7.18 0.98 0.59 0.70 1.85 1.0 0.023 1.17 122.92 0.253 47.06 27.12 2 3.06 594 1.6E-03 5.5E+02 9.7E-05 11 0.174 10094 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.297 5610.26 46.3 1.974 46.2 9.6 4.14 4.27%Interim Cover 0.050 100.7 0.12 0.00 0.12 0 1.70 78.557 1091.94 91.36 399 4.28% 2.0 51% 0.56 0.00 0.56 0 1.00 0.10 1.04 1.0 0.060 62.38 153.74 0.290 4.81 0.98 0.55 0.72 1.74 1.0 0.025 1.36 124.55 0.260 44.92 24.86 2 3.11 594 1.6E-03 5.5E+02 9.9E-05 11 0.175 10032 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.461 5610.10 39.8 1.642 39.7 8.0 3.48 4.13%Interim Cover 0.050 100.7 0.12 0.00 0.12 0 1.70 67.507 938.35 78.50 320 4.14% 2.1 51% 0.57 0.00 0.57 0 1.00 0.09 1.04 1.0 0.060 57.87 136.37 0.221 3.70 0.98 0.51 0.74 1.64 1.0 0.026 1.41 110.83 0.207 33.36 18.53 2 3.16 594 1.6E-03 5.5E+02 1.0E-04 11 0.176 9971 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.625 5609.94 45.3 1.613 45.3 4.3 1.87 3.56%Interim Cover 0.050 100.7 0.13 0.00 0.13 0 1.70 76.959 1069.73 89.44 342 3.57% 2.0 51% 0.58 0.00 0.58 0 1.00 0.10 1.04 1.0 0.060 61.71 151.14 0.277 4.62 0.98 0.55 0.73 1.67 1.0 0.026 1.31 116.85 0.228 34.59 19.61 2 3.21 594 1.6E-03 5.5E+02 1.0E-04 11 0.176 9911 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.789 5609.77 38.8 1.441 38.8 0.7 0.30 3.72%Interim Cover 0.050 100.7 0.14 0.00 0.14 0 1.70 65.892 915.90 76.54 275 3.73% 2.1 51% 0.58 0.00 0.58 0 0.99 0.09 1.03 1.0 0.059 57.18 133.72 0.213 3.58 0.98 0.51 0.75 1.58 1.0 0.027 1.40 107.01 0.194 27.66 15.62 2 3.26 594 1.6E-03 5.5E+02 1.0E-04 11 0.177 9853 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.953 5609.61 36.0 1.125 36.0 0.5 0.22 3.13%Interim Cover 0.050 100.7 0.15 0.00 0.15 0 1.70 61.149 849.97 71.03 241 3.14% 2.0 51% 0.59 0.00 0.59 0 0.99 0.08 1.03 1.0 0.059 55.25 126.27 0.194 3.27 0.97 0.49 0.76 1.53 1.0 0.028 1.35 95.55 0.161 21.71 12.49 2 3.31 594 1.6E-03 5.5E+02 1.0E-04 11 0.178 9796 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
3.117 5609.44 31.9 1.113 31.9 -1.8 -0.76 3.49%Interim Cover 0.050 100.7 0.16 0.00 0.16 0 1.70 54.213 753.56 62.94 202 3.51% 2.1 51% 0.60 0.00 0.60 0 0.99 0.08 1.03 1.0 0.059 52.41 115.35 0.170 2.88 0.97 0.46 0.77 1.48 1.0 0.029 1.48 93.27 0.155 19.85 11.37 2 3.36 495 1.6E-03 3.8E+02 1.5E-04 11 0.178 9739 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
3.281 5609.28 30.2 1.010 30.2 -1.8 -0.77 3.35%Slime Tailings 0.041 82.7 0.16 0.00 0.16 0 1.70 51.306 713.15 59.57 183 3.37% 2.1 71% 0.61 0.00 0.61 0 0.99 0.08 1.03 1.0 0.059 50.83 110.40 0.161 2.73 0.97 0.45 0.78 1.45 1.0 0.030 1.50 89.29 0.146 17.90 10.31 2 3.41 495 1.3E-03 3.1E+02 1.9E-04 16 0.432 8182 0.04% 2.00 0.65 0.03% 0.005 0.34 0.079 0.765 0.75% 0.0012
3.445 5609.12 27.8 0.976 27.8 -1.7 -0.73 3.52%Slime Tailings 0.041 82.7 0.17 0.00 0.17 0 1.70 47.209 656.21 54.81 162 3.54% 2.2 71% 0.61 0.00 0.61 0 0.99 0.07 1.03 1.0 0.059 49.17 103.98 0.149 2.54 0.97 0.43 0.79 1.41 1.0 0.030 1.60 87.77 0.143 16.81 9.67 2 3.46 495 1.3E-03 3.1E+02 1.9E-04 16 0.432 8145 0.04% 2.00 0.65 0.03% 0.005 0.34 0.079 0.765 0.79% 0.0013
3.609 5608.95 23.2 0.881 23.2 -1.0 -0.45 3.80%Slime Tailings 0.041 82.7 0.18 0.00 0.18 0 1.70 39.406 547.74 45.75 130 3.83% 2.3 71% 0.62 0.00 0.62 0 0.99 0.07 1.02 1.0 0.059 46.02 91.78 0.130 2.21 0.97 0.39 0.80 1.37 1.0 0.031 1.82 83.18 0.134 15.11 8.66 2 3.51 495 1.3E-03 3.1E+02 1.9E-04 16 0.433 8108 0.04% 2.00 0.65 0.03% 0.005 0.34 0.079 0.765 0.82% 0.0013
3.773 5608.79 18.8 1.037 18.8 -0.3 -0.12 5.50%Slime Tailings 0.041 82.7 0.18 0.00 0.18 0 1.70 32.028 445.19 37.20 101 5.56% 2.5 71% 0.63 0.00 0.63 0 0.99 0.06 1.02 1.0 0.058 43.04 80.24 0.113 1.94 0.97 0.35 0.80 1.36 1.0 0.032 2.53 94.13 0.158 17.18 9.56 2 3.56 495 1.3E-03 3.1E+02 1.9E-04 16 0.433 8072 0.04% 2.00 0.65 0.03% 0.006 0.34 0.079 0.765 0.86% 0.0014
3.937 5608.62 11.7 1.018 11.7 -0.3 -0.13 8.69%Slime Tailings 0.041 82.7 0.19 0.00 0.19 0 1.70 19.907 276.71 23.12 60 8.84% 2.7 71% 0.63 0.00 0.63 0 0.99 0.05 1.02 1.0 0.058 38.14 61.26 0.089 1.54 0.97 0.28 0.80 1.35 1.0 0.032 4.35 100.63 0.175 18.39 9.96 2 3.61 495 1.3E-03 3.1E+02 2.0E-04 16 0.434 8036 0.04% 2.00 0.65 0.03% 0.006 0.34 0.079 0.765 0.89% 0.0015
4.101 5608.46 25.7 1.084 25.7 0.5 0.20 4.22%Slime Tailings 0.041 82.7 0.20 0.00 0.20 0 1.70 43.622 606.35 50.67 129 4.26% 2.3 71% 0.64 0.00 0.64 0 0.99 0.07 1.02 1.0 0.058 47.73 98.40 0.140 2.40 0.97 0.41 0.79 1.35 1.0 0.032 1.93 97.99 0.168 17.03 9.71 2 3.66 495 1.3E-03 3.1E+02 2.0E-04 16 0.434 8001 0.04% 2.00 0.65 0.03% 0.006 0.34 0.079 0.765 0.93% 0.0015
4.265 5608.29 24.3 1.143 24.3 0.5 0.20 4.70%Slime Tailings 0.041 82.7 0.20 0.00 0.20 0 1.70 41.361 574.92 48.04 118 4.74% 2.4 71% 0.65 0.00 0.65 0 0.99 0.07 1.02 1.0 0.058 46.82 94.86 0.134 2.31 0.97 0.40 0.80 1.33 1.0 0.032 2.14 102.77 0.181 17.79 10.05 2 3.71 495 1.3E-03 3.1E+02 2.0E-04 16 0.435 7966 0.04% 2.00 0.65 0.03% 0.006 0.34 0.079 0.765 0.96% 0.0016
4.429 5608.13 21.7 1.211 21.7 -1.0 -0.45 5.58%Slime Tailings 0.041 82.7 0.21 0.00 0.21 0 1.70 36.907 513.01 42.85 102 5.63% 2.5 71% 0.65 0.00 0.65 0 0.99 0.07 1.02 1.0 0.058 45.01 87.86 0.124 2.13 0.97 0.38 0.80 1.32 1.0 0.032 2.55 109.16 0.201 19.13 10.63 2 3.76 495 1.3E-03 3.1E+02 2.0E-04 16 0.435 7932 0.04% 2.00 0.65 0.03% 0.007 0.34 0.079 0.765 1.00% 0.0016
4.593 5607.97 36.9 1.373 36.9 -0.2 -0.10 3.72%Slime Tailings 0.057 113.1 0.22 0.00 0.22 1 1.70 62.696 871.47 72.81 167 3.75% 2.2 71% 0.66 0.00 0.66 0 0.98 0.09 1.02 1.0 0.058 55.44 128.26 0.199 3.41 0.97 0.49 0.75 1.40 1.0 0.031 1.63 118.67 0.235 21.58 12.49 2 3.81 495 1.8E-03 4.3E+02 1.5E-04 16 0.436 7886 0.03% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
4.757 5607.80 75.7 1.484 75.7 0.5 0.20 1.96%Sand-Slime Tailing 0.059 119.0 0.23 0.01 0.22 1 1.70 128.690 1788.79 149.47 337 1.97% 1.8 47% 0.67 0.00 0.67 0 0.98 0.16 1.04 1.0 0.059 82.72 232.19 1.000 16.92 0.97 0.71 0.65 1.61 1.0 0.027 1.09 163.61 1.000 89.79 53.36 2 3.86 495 1.8E-03 4.5E+02 1.5E-04 10 0.184 9531 0.02%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
4.921 5607.64 90.7 1.093 90.7 1.8 0.79 1.21%Sand Tailings 0.062 123.5 0.24 0.01 0.23 1 1.63 147.850 2055.11 171.74 395 1.21% 1.6 18% 0.68 0.00 0.68 0 0.98 0.20 1.04 1.0 0.059 65.99 237.73 1.000 16.84 0.97 0.76 0.62 1.65 1.0 0.026 1.00 171.74 1.000 87.86 52.35 2 3.91 495 1.9E-03 4.7E+02 1.4E-04 0 0.189 11924 0.02%2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
5.085 5607.47 113.7 1.047 113.6 8.3 3.60 0.92%Sand Tailings 0.062 123.5 0.25 0.02 0.23 1 1.53 173.889 2417.06 202.05 484 0.92% 1.4 18% 0.69 0.00 0.69 0 0.98 0.27 1.06 1.0 0.060 73.74 275.80 1.000 16.65 0.97 0.82 0.60 1.68 1.0 0.025 1.00 202.05 1.000 86.02 51.33 2 3.96 495 1.9E-03 4.7E+02 1.4E-04 0 0.189 11852 0.02%2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
5.249 5607.31 123.4 0.699 123.3 4.9 2.11 0.57%Sand Tailings 0.062 123.5 0.26 0.02 0.24 1 1.49 183.875 2555.86 213.61 515 0.57% 1.2 18% 0.70 0.00 0.70 0 0.98 0.30 1.06 1.0 0.060 76.70 290.31 1.000 16.63 0.97 0.84 0.60 1.67 1.0 0.026 1.00 213.61 1.000 84.25 50.44 2 4.01 495 1.9E-03 4.7E+02 1.5E-04 0 0.190 11782 0.03%2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
5.413 5607.15 101.2 0.707 101.2 3.6 1.54 0.70%Sand Tailings 0.062 123.5 0.27 0.03 0.24 1 1.56 157.808 2193.53 183.32 414 0.70% 1.4 18% 0.71 0.00 0.71 0 0.98 0.22 1.04 1.0 0.059 68.96 252.28 1.000 16.96 0.97 0.78 0.61 1.64 1.0 0.026 1.00 183.32 1.000 82.55 49.75 2 4.06 495 1.9E-03 4.7E+02 1.5E-04 0 0.191 11713 0.03%2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
5.577 5606.98 80.8 0.675 80.8 2.2 0.94 0.84%Sand Tailings 0.062 123.5 0.28 0.03 0.25 1 1.64 132.252 1838.30 153.63 323 0.84% 1.5 18% 0.72 0.00 0.72 0 0.98 0.17 1.03 1.0 0.058 61.36 214.99 1.000 17.18 0.97 0.72 0.64 1.56 1.0 0.027 1.00 153.63 0.417 33.76 25.47 2 4.11 495 1.9E-03 4.7E+02 1.5E-04 0 0.191 11646 0.03%2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
5.741 5606.82 76.8 0.595 76.8 2.1 0.89 0.77%Sand Tailings 0.062 123.5 0.29 0.04 0.25 1 1.65 126.407 1757.06 146.84 301 0.78% 1.5 18% 0.73 0.00 0.73 0 0.98 0.16 1.02 1.0 0.058 59.63 206.47 1.000 17.26 0.97 0.70 0.65 1.53 1.0 0.028 1.00 146.84 0.374 29.72 23.49 2 4.16 495 1.9E-03 4.7E+02 1.5E-04 0 0.192 11580 0.03%2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
5.905 5606.65 74.6 0.547 74.6 2.0 0.86 0.73%Sand Tailings 0.062 123.5 0.30 0.04 0.26 1 1.65 122.801 1706.93 142.65 287 0.74% 1.5 18% 0.74 0.00 0.74 0 0.98 0.15 1.02 1.0 0.058 58.56 201.21 1.000 17.32 0.97 0.69 0.66 1.51 1.0 0.028 1.00 142.65 0.350 27.25 22.29 2 4.21 495 1.9E-03 4.7E+02 1.5E-04 0 0.192 11515 0.03%2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
6.069 5606.49 70.2 0.520 70.2 1.3 0.57 0.74%Sand Tailings 0.062 123.5 0.31 0.05 0.26 1 1.66 116.482 1619.10 135.30 265 0.74% 1.5 18% 0.75 0.00 0.75 0 0.98 0.14 1.02 1.0 0.057 56.68 191.98 0.810 14.09 0.97 0.67 0.66 1.49 1.0 0.029 1.00 135.30 0.310 23.72 18.90 2 4.26 495 1.9E-03 4.7E+02 1.6E-04 0 0.193 11452 0.03%2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
6.234 5606.33 60.0 0.488 60.0 1.2 0.52 0.81%Sand Tailings 0.062 123.5 0.32 0.05 0.27 1 1.70 101.915 1416.62 118.38 222 0.82% 1.6 18% 0.76 0.00 0.76 0 0.98 0.12 1.01 1.0 0.057 52.35 170.74 0.415 7.26 0.97 0.63 0.69 1.44 1.0 0.030 1.00 118.38 0.234 17.58 12.42 2 4.31 495 1.9E-03 4.7E+02 1.6E-04 0 0.194 11389 0.03% 2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
6.398 5606.16 59.3 0.442 59.3 0.8 0.36 0.75%Sand Tailings 0.062 123.5 0.33 0.06 0.27 1 1.70 100.623 1398.66 116.88 215 0.75% 1.6 18% 0.78 0.00 0.78 0 0.97 0.12 1.01 1.0 0.057 51.97 168.85 0.396 6.95 0.97 0.62 0.69 1.43 1.0 0.030 1.00 116.88 0.228 16.83 11.89 2 4.36 495 1.9E-03 4.7E+02 1.6E-04 0 0.194 11328 0.03% 2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
6.562 5606.00 58.2 0.392 58.2 1.2 0.52 0.67%Sand Tailings 0.062 123.5 0.34 0.06 0.28 1 1.69 98.587 1370.35 114.52 207 0.68% 1.6 18% 0.79 0.00 0.79 0 0.97 0.12 1.01 1.0 0.057 51.37 165.88 0.370 6.50 0.97 0.62 0.69 1.42 1.0 0.030 1.00 114.52 0.220 15.90 11.20 2 4.41 495 1.9E-03 4.7E+02 1.6E-04 0 0.195 11268 0.03% 2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
6.726 5605.83 53.1 0.371 53.1 1.1 0.46 0.70%Sand Tailings 0.062 123.5 0.35 0.07 0.28 1 1.70 90.304 1255.23 104.90 186 0.70% 1.6 18% 0.80 0.00 0.80 0 0.97 0.11 1.01 1.0 0.057 48.91 153.80 0.290 5.11 0.97 0.59 0.70 1.39 1.0 0.031 1.00 104.90 0.187 13.33 9.22 2 4.46 495 1.9E-03 4.7E+02 1.7E-04 0 0.195 11209 0.03% 2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
6.890 5605.67 49.1 0.311 49.1 0.6 0.26 0.63%Sand Tailings 0.062 123.5 0.36 0.07 0.29 1 1.70 83.470 1160.23 96.95 169 0.64% 1.6 18% 0.81 0.00 0.81 0 0.97 0.10 1.01 1.0 0.057 46.88 143.83 0.246 4.35 0.97 0.57 0.72 1.36 1.0 0.031 1.00 96.95 0.165 11.52 7.94 2 4.51 495 1.9E-03 4.7E+02 1.7E-04 0 0.196 11151 0.03% 2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.01% 0.0000
7.054 5605.51 56.4 0.288 56.4 1.2 0.51 0.51%Sand Tailings 0.062 123.5 0.37 0.08 0.29 1 1.67 94.245 1310.00 109.47 191 0.51% 1.5 18% 0.82 0.00 0.82 0 0.97 0.11 1.01 1.0 0.056 50.08 159.55 0.323 5.73 0.97 0.60 0.70 1.38 1.0 0.031 1.00 109.47 0.202 13.89 9.81 2 4.56 495 1.9E-03 4.7E+02 1.7E-04 0 0.197 11094 0.03% 2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.01% 0.0000
7.218 5605.34 56.4 0.275 56.4 1.4 0.59 0.49%Sand Tailings 0.062 123.5 0.38 0.08 0.30 1 1.66 93.553 1300.38 108.67 187 0.49% 1.5 18% 0.83 0.00 0.83 0 0.97 0.11 1.00 1.0 0.056 49.87 158.54 0.317 5.63 0.96 0.60 0.70 1.37 1.0 0.031 1.00 108.67 0.199 13.49 9.56 2 4.61 495 1.9E-03 4.7E+02 1.7E-04 0 0.197 11038 0.03% 2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.01% 0.0000
7.382 5605.18 44.0 0.351 44.0 0.2 0.09 0.80%Sand Tailings 0.062 123.5 0.39 0.09 0.30 1 1.70 74.766 1039.25 86.84 143 0.81% 1.7 18% 0.84 0.00 0.84 0 0.97 0.10 1.00 1.0 0.056 44.29 131.13 0.206 3.67 0.96 0.54 0.73 1.32 1.0 0.032 1.06 91.90 0.152 10.13 6.90 2 4.66 495 1.9E-03 4.7E+02 1.7E-04 0 0.198 10983 0.03% 2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.01% 0.0000
7.546 5605.01 36.9 0.372 36.9 -0.1 -0.05 1.01%Sand-Slime Tailing 0.059 119.0 0.40 0.09 0.31 1 1.70 62.747 872.18 72.88 118 1.02% 1.9 47% 0.85 0.00 0.85 0 0.97 0.09 1.00 1.0 0.056 55.86 128.74 0.200 3.57 0.96 0.49 0.75 1.29 1.0 0.033 1.15 84.08 0.135 8.87 6.22 2 4.71 495 1.8E-03 4.5E+02 1.8E-04 10 0.195 8675 0.03% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
7.710 5604.85 30.0 0.299 30.0 0.2 0.08 1.00%Sand-Slime Tailing 0.059 119.0 0.41 0.10 0.31 1 1.70 51.034 709.37 59.28 94 1.01% 1.9 47% 0.86 0.00 0.86 0 0.97 0.08 1.00 1.0 0.056 51.09 110.37 0.161 2.87 0.96 0.44 0.78 1.25 1.0 0.034 1.22 72.36 0.115 7.45 5.16 2 4.76 495 1.8E-03 4.5E+02 1.8E-04 10 0.195 8633 0.03% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.06% 0.0001
7.874 5604.69 32.9 0.212 32.9 1.1 0.46 0.64%Sand-Slime Tailing 0.059 119.0 0.42 0.10 0.32 1 1.70 55.896 776.95 64.93 102 0.65% 1.8 47% 0.87 0.00 0.87 0 0.96 0.08 1.00 1.0 0.056 53.07 118.01 0.175 3.15 0.96 0.47 0.77 1.26 1.0 0.034 1.10 71.42 0.114 7.26 5.20 2 4.81 495 1.8E-03 4.5E+02 1.9E-04 10 0.196 8593 0.03% 2.00 0.65 0.03% 0.001 0.34 0.079 0.765 0.14% 0.0002
8.038 5604.52 38.9 0.166 38.9 2.2 0.94 0.43%Sand Tailings 0.062 123.5 0.43 0.11 0.32 1 1.70 66.079 918.50 76.77 119 0.43% 1.6 18% 0.88 0.00 0.88 0 0.96 0.09 1.00 1.0 0.056 41.72 118.49 0.176 3.17 0.96 0.51 0.75 1.28 1.0 0.033 1.00 76.77 0.122 7.66 5.42 2 4.86 495 1.9E-03 4.7E+02 1.8E-04 0 0.200 10777 0.04% 2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.02% 0.0000
8.202 5604.36 38.5 0.158 38.5 1.2 0.52 0.41%Sand Tailings 0.062 123.5 0.44 0.11 0.33 1 1.70 65.399 909.05 75.97 116 0.42% 1.6 18% 0.89 0.00 0.89 0 0.96 0.09 1.00 1.0 0.056 41.51 117.48 0.174 3.14 0.96 0.50 0.75 1.27 1.0 0.033 1.00 75.97 0.121 7.47 5.30 2 4.91 495 1.9E-03 4.7E+02 1.8E-04 0 0.200 10727 0.04% 2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.02% 0.0000
8.366 5604.19 36.9 0.159 36.9 0.5 0.22 0.43%Sand Tailings 0.062 123.5 0.45 0.12 0.33 1 1.70 62.798 872.89 72.94 110 0.44% 1.7 18% 0.90 0.00 0.90 0 0.96 0.09 1.00 1.0 0.055 40.74 113.68 0.167 3.01 0.96 0.49 0.75 1.26 1.0 0.034 1.02 74.14 0.118 7.18 5.10 2 4.96 495 1.9E-03 4.7E+02 1.9E-04 0 0.201 10677 0.04% 2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.03% 0.0000
8.530 5604.03 31.2 0.156 31.2 -0.5 -0.20 0.50%Sand-Slime Tailing 0.059 119.0 0.46 0.12 0.34 1 1.70 53.040 737.26 61.60 91 0.51% 1.8 47% 0.91 0.00 0.91 0 0.96 0.08 1.00 1.0 0.055 51.90 113.50 0.166 3.01 0.96 0.45 0.77 1.24 1.0 0.034 1.09 66.94 0.108 6.49 4.75 2 5.01 495 1.8E-03 4.5E+02 1.9E-04 10 0.198 8433 0.03% 2.00 0.65 0.03% 0.002 0.34 0.079 0.765 0.35% 0.0006
8.694 5603.87 24.0 0.142 24.0 -0.0 -0.02 0.59%Sand-Slime Tailing 0.059 119.0 0.47 0.13 0.34 1 1.70 40.800 567.12 47.39 69 0.60% 1.9 47% 0.92 0.00 0.92 0 0.96 0.07 1.00 1.0 0.055 46.92 94.31 0.133 2.42 0.96 0.40 0.80 1.20 1.0 0.035 1.20 57.03 0.097 5.77 4.09 2 5.06 495 1.8E-03 4.5E+02 2.0E-04 10 0.199 8395 0.03% 2.00 0.65 0.03% 0.003 0.34 0.079 0.765 0.39% 0.0006
8.858 5603.70 20.0 0.119 20.0 3.7 1.59 0.60%Sand-Slime Tailing 0.059 119.0 0.48 0.13 0.35 1 1.70 33.949 471.89 39.48 56 0.61% 2.0 47% 0.92 0.00 0.92 0 0.96 0.06 1.00 1.0 0.055 44.15 83.62 0.118 2.13 0.96 0.36 0.80 1.20 1.0 0.035 1.29 50.93 0.092 5.40 3.77 2 5.11 495 1.8E-03 4.5E+02 2.0E-04 10 0.199 8359 0.03% 2.00 0.65 0.03% 0.003 0.34 0.079 0.765 0.43% 0.0007
9.022 5603.54 23.7 0.086 23.7 6.8 2.94 0.36%Sand-Slime Tailing 0.059 119.0 0.49 0.14 0.35 1 1.70 40.273 559.79 46.86 66 0.37% 1.8 47% 0.93 0.00 0.93 0 0.96 0.07 0.99 1.0 0.055 46.74 93.59 0.132 2.40 0.96 0.40 0.80 1.20 1.0 0.035 1.13 52.86 0.094 5.42 3.91 2 5.16 495 1.8E-03 4.5E+02 2.0E-04 10 0.200 8322 0.03% 2.00 0.65 0.03% 0.003 0.34 0.079 0.765 0.47% 0.0008
9.186 5603.37 27.5 0.145 27.5 5.4 2.34 0.53%Sand-Slime Tailing 0.059 119.0 0.50 0.14 0.36 1 1.70 46.665 648.64 54.27 76 0.54% 1.9 47% 0.94 0.00 0.94 0 0.96 0.07 0.99 1.0 0.055 49.33 103.60 0.149 2.70 0.96 0.43 0.79 1.21 1.0 0.035 1.15 62.27 0.102 5.85 4.28 2 5.21 495 1.8E-03 4.5E+02 2.0E-04 10 0.200 8287 0.04% 2.00 0.65 0.03% 0.003 0.34 0.079 0.765 0.51% 0.0008
9.350 5603.21 37.0 0.177 37.0 6.8 2.95 0.48%Sand Tailings 0.062 123.5 0.51 0.15 0.36 1 1.64 60.777 844.79 70.67 101 0.48% 1.7 18% 0.95 0.00 0.95 0 0.96 0.08 0.99 1.0 0.055 40.16 110.82 0.161 2.95 0.96 0.49 0.76 1.23 1.0 0.034 1.05 74.41 0.118 6.66 4.80 2 5.26 460 1.9E-03 4.1E+02 2.3E-04 0 0.204 10401 0.06% 2.20 1.00 0.03% 0.001 0.34 0.079 0.765 0.11% 0.0002
9.514 5603.05 43.3 0.205 43.3 8.3 3.61 0.47%Sand Tailings 0.062 123.5 0.52 0.15 0.37 1 1.59 68.941 958.28 80.17 117 0.48% 1.7 18% 0.96 0.00 0.96 0 0.95 0.09 0.99 1.0 0.055 42.58 122.75 0.186 3.40 0.96 0.52 0.74 1.25 1.0 0.034 1.02 81.39 0.130 7.23 5.31 2 5.31 460 1.9E-03 4.1E+02 2.3E-04 0 0.204 10356 0.06% 2.20 1.00 0.03% 0.001 0.34 0.079 0.765 0.11% 0.0002
9.678 5602.88 41.4 0.300 41.3 6.0 2.61 0.73%Sand Tailings 0.062 123.5 0.53 0.16 0.37 1 1.59 65.913 916.19 76.62 110 0.73% 1.8 18% 0.97 0.00 0.97 0 0.95 0.09 0.99 1.0 0.054 41.68 118.30 0.176 3.23 0.96 0.51 0.75 1.24 1.0 0.034 1.10 84.50 0.136 7.46 5.35 2 5.36 460 1.9E-03 4.1E+02 2.3E-04 0 0.205 10312 0.06% 2.20 1.00 0.03% 0.001 0.34 0.079 0.765 0.11% 0.0002
9.842 5602.72 27.8 0.053 27.7 6.0 2.62 0.19%Sand-Slime Tailing 0.059 119.0 0.54 0.16 0.38 1 1.68 46.511 646.50 54.09 72 0.19% 1.7 47% 0.98 0.00 0.98 0 0.95 0.07 0.99 1.0 0.054 49.27 103.37 0.148 2.72 0.96 0.42 0.79 1.19 1.0 0.035 1.03 55.73 0.096 5.21 3.96 2 5.41 460 1.8E-03 3.9E+02 2.5E-04 10 0.202 8145 0.05% 2.00 0.65 0.03% 0.008 0.34 0.079 0.765 1.24% 0.0020
10.006 5602.55 18.0 0.353 17.9 7.9 3.43 1.96%Sand-Slime Tailing 0.059 119.0 0.55 0.17 0.38 1 1.70 30.464 423.45 35.48 46 2.03% 2.4 47% 0.99 0.00 0.99 0 0.95 0.06 0.99 1.0 0.054 42.74 78.22 0.110 2.02 0.96 0.34 0.80 1.18 1.0 0.036 2.18 77.52 0.123 6.60 4.31 2 5.46 460 1.8E-03 3.9E+02 2.5E-04 10 0.203 8112 0.05% 2.00 0.65 0.03% 0.008 0.34 0.079 0.765 1.28% 0.0021
10.170 5602.39 8.2 0.125 8.2 7.0 3.02 1.52%Slime Tailings 0.057 113.1 0.56 0.18 0.38 1 1.70 13.889 193.06 16.22 20 1.63% 2.6 71% 1.00 0.00 1.00 0 0.95 0.05 0.99 1.0 0.054 35.74 51.95 0.079 1.46 0.96 0.23 0.80 1.17 1.0 0.036 3.34 54.12 0.095 5.02 3.24 2 5.51 460 1.8E-03 3.7E+02 2.6E-04 16 0.455 6651 0.07% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.75% 0.0029
10.335 5602.23 13.5 0.090 13.4 11.9 5.17 0.67%Sand-Slime Tailing 0.059 119.0 0.57 0.18 0.39 1 1.70 22.763 316.41 26.58 33 0.70% 2.2 47% 1.01 0.00 1.01 0 0.95 0.06 0.99 1.0 0.054 39.63 66.21 0.095 1.75 0.96 0.30 0.80 1.17 1.0 0.036 1.72 45.75 0.088 4.61 3.18 2 5.56 460 1.8E-03 3.9E+02 2.5E-04 10 0.204 8048 0.05% 2.00 0.65 0.03% 0.009 0.34 0.079 0.765 1.35% 0.0022
10.499 5602.06 10.5 0.118 10.3 21.6 9.36 1.13%Sand-Slime Tailing 0.059 119.0 0.58 0.19 0.39 1 1.70 17.561 244.10 20.66 25 1.19% 2.4 47% 1.02 0.00 1.02 0 0.95 0.05 0.99 1.0 0.054 37.55 58.21 0.086 1.58 0.96 0.26 0.80 1.17 1.0 0.036 2.50 51.61 0.093 4.80 3.19 2 5.61 460 1.8E-03 3.9E+02 2.6E-04 10 0.204 8016 0.05% 2.00 0.65 0.03% 0.009 0.34 0.079 0.765 1.38% 0.0023
10.663 5601.90 9.7 0.087 9.5 38.5 16.68 0.89%Sand-Slime Tailing 0.059 119.0 0.59 0.19 0.40 1 1.70 16.150 224.49 19.23 23 0.95% 2.4 47% 1.03 0.00 1.03 0 0.95 0.05 0.99 1.0 0.054 37.05 56.28 0.084 1.55 0.96 0.25 0.80 1.17 1.0 0.036 2.42 46.55 0.089 4.54 3.05 2 5.66 460 1.8E-03 3.9E+02 2.6E-04 10 0.205 7985 0.06% 2.00 0.65 0.03% 0.009 0.34 0.079 0.765 1.42% 0.0023
10.827 5601.73 10.0 0.117 9.7 46.7 20.25 1.17%Sand-Slime Tailing 0.059 119.0 0.60 0.20 0.40 1 1.70 16.490 229.21 19.73 23 1.25% 2.5 47% 1.04 0.00 1.04 0 0.95 0.05 0.99 1.0 0.054 37.22 56.95 0.085 1.56 0.96 0.26 0.80 1.16 1.0 0.036 2.67 52.71 0.094 4.74 3.15 2 5.71 460 1.8E-03 3.9E+02 2.6E-04 10 0.205 7953 0.06% 2.00 0.65 0.03% 0.009 0.34 0.079 0.765 1.45% 0.0024
10.991 5601.57 10.2 0.059 9.9 46.8 20.28 0.58%Sand-Slime Tailing 0.059 119.0 0.61 0.20 0.41 1 1.70 16.898 234.88 20.20 24 0.61% 2.3 47% 1.05 0.00 1.05 0 0.94 0.05 0.99 1.0 0.054 37.39 57.59 0.085 1.58 0.96 0.26 0.80 1.16 1.0 0.036 2.04 41.17 0.084 4.22 2.90 2 5.76 460 1.8E-03 3.9E+02 2.6E-04 10 0.206 7923 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.49% 0.0024
11.155 5601.41 16.6 0.090 16.3 43.7 18.93 0.54%Sand-Slime Tailing 0.059 119.0 0.62 0.21 0.41 1 1.69 27.563 383.13 32.55 39 0.56% 2.1 47% 1.06 0.00 1.06 0 0.94 0.06 0.99 1.0 0.054 41.72 74.26 0.105 1.95 0.96 0.33 0.80 1.16 1.0 0.036 1.49 48.45 0.090 4.47 3.21 2 5.81 460 1.8E-03 3.9E+02 2.6E-04 10 0.206 7893 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.52% 0.0025
11.319 5601.24 15.8 0.118 15.7 25.2 10.92 0.75%Sand-Slime Tailing 0.059 119.0 0.63 0.21 0.42 1 1.69 26.439 367.50 31.02 36 0.78% 2.2 47% 1.07 0.00 1.07 0 0.94 0.06 0.99 1.0 0.054 41.18 72.19 0.102 1.90 0.96 0.32 0.80 1.16 1.0 0.036 1.69 52.28 0.093 4.57 3.24 2 5.86 460 1.8E-03 3.9E+02 2.7E-04 10 0.207 7863 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.56% 0.0026
11.483 5601.08 12.9 0.083 12.7 24.3 10.51 0.64%Sand-Slime Tailing 0.059 119.0 0.64 0.22 0.42 1 1.70 21.658 301.05 25.45 29 0.68% 2.3 47% 1.08 0.00 1.08 0 0.94 0.06 0.99 1.0 0.054 39.23 64.68 0.093 1.74 0.95 0.29 0.80 1.15 1.0 0.037 1.84 46.90 0.089 4.32 3.03 2 5.91 460 1.8E-03 3.9E+02 2.7E-04 10 0.207 7833 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.59% 0.0026
11.647 5600.91 11.0 0.114 10.8 43.0 18.65 1.03%Sand-Slime Tailing 0.059 119.0 0.65 0.22 0.43 1 1.70 18.309 254.50 21.80 24 1.10% 2.4 47% 1.09 0.00 1.09 0 0.94 0.05 0.99 1.0 0.054 37.95 59.74 0.088 1.63 0.95 0.27 0.80 1.15 1.0 0.037 2.46 53.63 0.094 4.52 3.08 2 5.96 460 1.8E-03 3.9E+02 2.7E-04 10 0.208 7804 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.63% 0.0027
11.811 5600.75 9.6 0.088 9.2 64.1 27.78 0.91%Sand-Slime Tailing 0.059 119.0 0.66 0.23 0.43 1 1.70 15.691 218.10 19.01 21 0.98% 2.5 47% 1.10 0.00 1.10 0 0.94 0.05 0.99 1.0 0.054 36.97 55.98 0.084 1.56 0.95 0.25 0.80 1.15 1.0 0.037 2.62 49.79 0.091 4.34 2.95 2 6.01 460 1.8E-03 3.9E+02 2.7E-04 10 0.208 7775 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.66% 0.0027
11.975 5600.59 9.8 0.035 9.4 61.1 26.46 0.36%Sand-Slime Tailing 0.059 119.0 0.67 0.23 0.44 1 1.70 16.014 222.59 19.35 21 0.38% 2.3 47% 1.11 0.00 1.11 0 0.94 0.05 0.99 1.0 0.053 37.09 56.44 0.084 1.57 0.95 0.25 0.80 1.15 1.0 0.037 1.93 37.34 0.081 3.81 2.69 2 6.06 460 1.8E-03 3.9E+02 2.8E-04 10 0.209 7747 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.70% 0.0028
12.139 5600.42 9.7 0.064 9.4 51.9 22.49 0.66%Sand-Slime Tailing 0.059 119.0 0.68 0.24 0.44 1 1.69 15.804 219.68 18.99 20 0.71% 2.4 47% 1.12 0.00 1.12 0 0.94 0.05 0.99 1.0 0.053 36.96 55.95 0.083 1.56 0.95 0.25 0.80 1.14 1.0 0.037 2.36 44.75 0.087 4.06 2.81 2 6.11 460 1.8E-03 3.9E+02 2.8E-04 10 0.209 7719 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.73% 0.0028
12.303 5600.26 11.1 0.121 10.7 65.5 28.37 1.09%Sand-Slime Tailing 0.059 119.0 0.69 0.24 0.45 1 1.67 17.874 248.45 21.55 23 1.16% 2.5 47% 1.13 0.00 1.13 0 0.94 0.05 0.99 1.0 0.053 37.86 59.41 0.087 1.64 0.95 0.27 0.80 1.14 1.0 0.037 2.59 55.72 0.096 4.42 3.03 2 6.16 460 1.8E-03 3.9E+02 2.8E-04 10 0.210 7691 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.77% 0.0029
12.467 5600.09 16.8 0.110 16.4 67.8 29.38 0.66%Sand-Slime Tailing 0.059 119.0 0.70 0.25 0.45 1 1.60 26.138 363.32 31.14 36 0.68% 2.2 47% 1.14 0.00 1.14 0 0.93 0.06 0.98 1.0 0.053 41.22 72.37 0.103 1.93 0.95 0.32 0.80 1.14 1.0 0.037 1.64 50.96 0.092 4.21 3.07 2 6.21 460 1.8E-03 3.9E+02 2.8E-04 10 0.210 7664 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.80% 0.0030
12.631 5599.93 30.9 0.086 30.8 23.6 10.23 0.28%Sand Tailings 0.062 123.5 0.71 0.25 0.45 1 1.49 45.876 637.67 53.54 66 0.28% 1.8 18% 1.15 0.00 1.15 0 0.93 0.07 0.98 1.0 0.053 35.78 89.31 0.126 2.39 0.95 0.42 0.79 1.14 1.0 0.037 1.09 58.49 0.099 4.45 3.42 2 6.26 460 1.9E-03 4.1E+02 2.8E-04 0 0.213 9635 0.09% 2.20 1.00 0.03%0.001 0.34 0.079 0.765 0.21% 0.0003
12.795 5599.76 30.6 0.167 30.5 23.2 10.07 0.55%Sand-Slime Tailing 0.059 119.0 0.72 0.26 0.46 1 1.48 45.191 628.16 52.74 65 0.56% 1.9 47% 1.16 0.00 1.16 0 0.93 0.07 0.98 1.0 0.053 48.80 101.53 0.145 2.75 0.95 0.42 0.79 1.14 1.0 0.037 1.21 63.65 0.104 4.64 3.70 2 6.31 460 1.8E-03 3.9E+02 2.9E-04 10 0.211 7609 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.87% 0.0031
12.959 5599.60 24.9 0.293 24.8 9.7 4.19 1.18%Sand-Slime Tailing 0.059 119.0 0.73 0.26 0.46 1 1.51 37.430 520.28 43.58 52 1.21% 2.2 47% 1.17 0.00 1.17 0 0.93 0.07 0.98 1.0 0.053 45.59 89.16 0.126 2.39 0.95 0.38 0.80 1.13 1.0 0.037 1.63 71.04 0.113 5.01 3.70 2 6.36 460 1.8E-03 3.9E+02 2.9E-04 10 0.211 7583 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.91% 0.0031
13.123 5599.44 22.1 0.250 22.0 13.6 5.90 1.13%Sand-Slime Tailing 0.059 119.0 0.74 0.27 0.47 1 1.52 33.392 464.15 38.93 46 1.17% 2.2 47% 1.18 0.00 1.18 0 0.93 0.06 0.98 1.0 0.053 43.96 82.89 0.117 2.22 0.95 0.36 0.80 1.13 1.0 0.037 1.72 67.05 0.108 4.73 3.47 2 6.41 460 1.8E-03 3.9E+02 2.9E-04 10 0.212 7557 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.95% 0.0032
13.287 5599.27 17.9 0.174 17.8 18.4 7.98 0.97%Sand-Slime Tailing 0.059 119.0 0.75 0.27 0.47 1 1.54 27.284 379.25 31.89 36 1.02% 2.3 47% 1.19 0.00 1.19 0 0.93 0.06 0.98 1.0 0.053 41.49 73.38 0.104 1.97 0.95 0.33 0.80 1.13 1.0 0.037 1.86 59.29 0.099 4.31 3.14 2 6.46 460 1.8E-03 3.9E+02 3.0E-04 10 0.212 7531 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.98% 0.0033
13.451 5599.11 18.6 0.120 18.3 33.7 14.61 0.65%Sand-Slime Tailing 0.059 119.0 0.76 0.28 0.48 1 1.52 27.891 387.68 32.76 37 0.67% 2.2 47% 1.20 0.00 1.20 0 0.93 0.06 0.98 1.0 0.052 41.79 74.56 0.105 2.01 0.95 0.33 0.80 1.12 1.0 0.037 1.60 52.27 0.093 4.01 3.01 2 6.51 460 1.8E-03 3.9E+02 3.0E-04 10 0.213 7505 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 2.02% 0.0033
13.615 5598.94 19.0 0.093 18.8 27.6 11.94 0.49%Sand-Slime Tailing 0.059 119.0 0.77 0.28 0.48 1 1.51 28.342 393.95 33.22 38 0.51% 2.1 47% 1.21 0.00 1.21 0 0.93 0.06 0.98 1.0 0.052 41.95 75.17 0.106 2.03 0.95 0.33 0.80 1.12 1.0 0.037 1.47 48.88 0.091 3.86 2.95 2 6.56 460 1.8E-03 3.9E+02 3.0E-04 10 0.213 7480 0.08% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 2.05% 0.0034
13.779 5598.78 18.8 0.035 18.6 24.7 10.70 0.19%Sand-Slime Tailing 0.059 119.0 0.77 0.29 0.49 1 1.50 27.908 387.92 32.68 37 0.19% 2.0 47% 1.22 0.00 1.22 0 0.92 0.06 0.98 1.0 0.052 41.76 74.45 0.105 2.01 0.95 0.33 0.80 1.12 1.0 0.037 1.26 41.27 0.084 3.56 2.79 2 6.61 460 1.8E-03 3.9E+02 3.0E-04 10 0.214 7455 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.09% 0.0034
13.943 5598.62 17.5 0.045 17.4 14.9 6.47 0.26%Sand-Slime Tailing 0.059 119.0 0.78 0.29 0.49 1 1.50 26.084 362.57 30.46 34 0.27% 2.0 47% 1.23 0.00 1.23 0 0.92 0.06 0.98 1.0 0.052 40.98 71.44 0.101 1.94 0.95 0.32 0.80 1.12 1.0 0.037 1.36 41.55 0.085 3.54 2.74 2 6.66 460 1.8E-03 3.9E+02 3.1E-04 10 0.214 7431 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.13% 0.0035
14.107 5598.45 15.4 0.100 15.2 27.0 11.68 0.65%Sand-Slime Tailing 0.059 119.0 0.79 0.30 0.50 1 1.51 22.922 318.61 26.92 29 0.69% 2.3 47% 1.24 0.00 1.24 0 0.92 0.06 0.98 1.0 0.052 39.74 66.66 0.096 1.83 0.95 0.30 0.80 1.12 1.0 0.037 1.84 49.42 0.091 3.78 2.80 2 6.71 460 1.8E-03 3.9E+02 3.1E-04 10 0.215 7406 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.16% 0.0035
14.271 5598.29 16.8 0.261 16.6 35.9 15.54 1.55%Sand-Slime Tailing 0.059 119.0 0.80 0.30 0.50 1 1.49 24.694 343.25 29.07 32 1.63% 2.4 47% 1.25 0.00 1.25 0 0.92 0.06 0.98 1.0 0.052 40.50 69.56 0.099 1.90 0.95 0.31 0.80 1.11 1.0 0.038 2.44 71.02 0.113 4.66 3.28 2 6.76 460 1.8E-03 3.9E+02 3.1E-04 10 0.215 7382 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.20% 0.0036
14.436 5598.12 15.9 0.208 15.7 41.2 17.86 1.31%Sand-Slime Tailing 0.059 119.0 0.81 0.31 0.51 1 1.48 23.240 323.03 27.43 30 1.38% 2.4 47% 1.26 0.00 1.26 0 0.92 0.06 0.98 1.0 0.052 39.92 67.36 0.096 1.85 0.95 0.30 0.80 1.11 1.0 0.038 2.37 64.97 0.106 4.30 3.07 2 6.81 460 1.8E-03 3.9E+02 3.1E-04 10 0.215 7358 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.24% 0.0037
14.600 5597.96 17.8 0.165 17.6 26.3 11.41 0.93%Sand-Slime Tailing 0.059 119.0 0.82 0.31 0.51 1 1.46 25.776 358.29 30.22 33 0.97% 2.3 47% 1.27 0.00 1.27 0 0.92 0.06 0.98 1.0 0.052 40.90 71.12 0.101 1.95 0.95 0.32 0.80 1.11 1.0 0.038 1.92 58.11 0.098 3.97 2.96 2 6.86 500 1.8E-03 4.6E+02 2.7E-04 10 0.216 7335 0.06% 2.00 0.65 0.03% 0.009 0.34 0.079 0.765 1.42% 0.0023
14.764 5597.80 15.1 0.105 15.0 29.7 12.88 0.69%Sand-Slime Tailing 0.059 119.0 0.83 0.32 0.52 1 1.47 21.980 305.52 25.85 28 0.73% 2.3 47% 1.28 0.00 1.28 0 0.92 0.06 0.98 1.0 0.052 39.37 65.21 0.094 1.81 0.95 0.29 0.80 1.11 1.0 0.038 1.95 50.29 0.092 3.68 2.74 2 6.91 500 1.8E-03 4.6E+02 2.7E-04 10 0.216 7312 0.06% 2.00 0.65 0.03% 0.009 0.34 0.079 0.765 1.45% 0.0024
14.928 5597.63 16.4 0.396 16.2 36.8 15.96 2.41%Sand-Slime Tailing 0.059 119.0 0.84 0.32 0.52 1 1.45 23.488 326.48 27.67 30 2.55% 2.6 47% 1.29 0.00 1.29 0 0.92 0.06 0.98 1.0 0.052 40.00 67.67 0.097 1.87 0.95 0.30 0.80 1.11 1.0 0.038 3.16 87.53 0.142 5.65 3.76 2 6.96 500 1.8E-03 4.6E+02 2.7E-04 10 0.217 7289 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.48% 0.0024
15.092 5597.47 15.6 0.201 15.3 59.5 25.80 1.29%Sand-Slime Tailing 0.059 119.0 0.85 0.33 0.52 1 1.45 22.121 307.48 26.32 28 1.36% 2.4 47% 1.30 0.00 1.30 0 0.91 0.06 0.98 1.0 0.052 39.53 65.85 0.095 1.83 0.95 0.30 0.80 1.10 1.0 0.038 2.44 64.33 0.105 4.12 2.98 2 7.01 500 1.8E-03 4.6E+02 2.7E-04 10 0.217 7266 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.51% 0.0025
15.256 5597.30 25.6 0.270 25.4 23.7 10.26 1.06%Sand-Slime Tailing 0.059 119.0 0.86 0.33 0.53 1 1.39 35.271 490.27 41.20 47 1.09% 2.2 47% 1.31 0.00 1.31 0 0.91 0.07 0.97 1.0 0.051 44.75 85.96 0.121 2.36 0.95 0.37 0.80 1.10 1.0 0.038 1.66 68.40 0.110 4.28 3.32 2 7.06 500 1.8E-03 4.6E+02 2.8E-04 10 0.217 7243 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.53% 0.0025
15.420 5597.14 21.4 0.308 21.3 15.0 6.48 1.44%Sand-Slime Tailing 0.059 119.0 0.87 0.34 0.53 1 1.40 29.754 413.58 34.71 38 1.50% 2.3 47% 1.32 0.00 1.32 0 0.91 0.06 0.97 1.0 0.051 42.47 77.18 0.109 2.12 0.95 0.34 0.80 1.10 1.0 0.038 2.11 73.21 0.116 4.51 3.31 2 7.11 500 1.8E-03 4.6E+02 2.8E-04 10 0.218 7221 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.56% 0.0026
15.584 5596.98 18.8 0.188 18.7 18.8 8.16 1.00%Sand-Slime Tailing 0.059 119.0 0.88 0.34 0.54 1 1.40 26.274 365.21 30.71 33 1.05% 2.3 47% 1.33 0.00 1.33 0 0.91 0.06 0.97 1.0 0.051 41.07 71.78 0.102 1.98 0.95 0.32 0.80 1.10 1.0 0.038 1.98 60.69 0.101 3.87 2.93 2 7.16 500 1.8E-03 4.6E+02 2.8E-04 10 0.218 7199 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.59% 0.0026
15.748 5596.81 20.6 0.295 20.4 18.0 7.78 1.44%Sand-Slime Tailing 0.059 119.0 0.89 0.35 0.54 1 1.39 28.363 394.25 33.12 36 1.50% 2.4 47% 1.34 0.00 1.34 0 0.91 0.06 0.97 1.0 0.051 41.92 75.04 0.106 2.07 0.94 0.33 0.80 1.10 1.0 0.038 2.18 72.28 0.115 4.38 3.23 2 7.21 500 1.8E-03 4.6E+02 2.8E-04 10 0.219 7177 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.62% 0.0027
15.912 5596.65 16.7 0.170 16.4 37.1 16.09 1.02%Sand-Slime Tailing 0.059 119.0 0.90 0.35 0.55 1 1.40 22.984 319.47 27.07 29 1.08% 2.4 47% 1.35 0.00 1.35 0 0.91 0.06 0.97 1.0 0.051 39.80 66.87 0.096 1.87 0.94 0.30 0.80 1.09 1.0 0.038 2.19 59.36 0.099 3.76 2.81 2 7.26 500 1.8E-03 4.6E+02 2.8E-04 10 0.219 7155 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.64% 0.0027
16.076 5596.48 19.8 0.165 19.5 48.9 21.20 0.83%Sand-Slime Tailing 0.059 119.0 0.91 0.36 0.55 1 1.38 26.799 372.50 31.61 34 0.87% 2.3 47% 1.36 0.00 1.36 0 0.91 0.06 0.97 1.0 0.051 41.39 73.00 0.103 2.03 0.94 0.32 0.80 1.09 1.0 0.038 1.82 57.57 0.098 3.66 2.84 2 7.31 500 1.8E-03 4.6E+02 2.9E-04 10 0.220 7134 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.67% 0.0027
16.240 5596.32 21.9 0.284 21.7 42.0 18.19 1.30%Sand-Slime Tailing 0.059 119.0 0.92 0.36 0.56 1 1.36 29.415 408.87 34.58 38 1.35% 2.3 47% 1.36 0.00 1.36 0 0.91 0.06 0.97 1.0 0.051 42.43 77.01 0.109 2.13 0.94 0.34 0.80 1.09 1.0 0.038 2.04 70.42 0.112 4.18 3.16 2 7.36 500 1.8E-03 4.6E+02 2.9E-04 10 0.220 7113 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.70% 0.0028
16.404 5596.16 21.9 0.319 21.5 65.3 28.28 1.46%Sand-Slime Tailing 0.059 119.0 0.93 0.37 0.56 1 1.35 29.002 403.13 34.32 37 1.52% 2.4 47% 1.37 0.00 1.37 0 0.90 0.06 0.97 1.0 0.051 42.34 76.66 0.108 2.13 0.94 0.34 0.80 1.09 1.0 0.038 2.16 74.09 0.118 4.34 3.24 2 7.41 500 1.8E-03 4.6E+02 2.9E-04 10 0.220 7092 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.73% 0.0028
16.568 5595.99 28.0 0.500 27.9 24.0 10.38 1.78%Sand-Slime Tailing 0.059 119.0 0.94 0.37 0.57 1 1.32 36.866 512.44 43.05 48 1.85% 2.3 47% 1.38 0.00 1.38 0 0.90 0.07 0.97 1.0 0.051 45.40 88.45 0.125 2.46 0.94 0.38 0.80 1.09 1.0 0.038 2.04 87.67 0.143 5.22 3.84 2 7.46 500 1.8E-03 4.6E+02 2.9E-04 10 0.221 7071 0.07% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.76% 0.0029
16.732 5595.83 19.0 0.522 18.7 40.7 17.62 2.75%Slime Tailings 0.057 113.1 0.95 0.38 0.57 1 1.35 25.254 351.03 29.73 32 2.90% 2.6 71% 1.39 0.00 1.39 0 0.90 0.06 0.97 1.0 0.051 40.44 70.17 0.100 1.97 0.94 0.31 0.80 1.09 1.0 0.038 3.27 97.24 0.166 6.01 3.99 2 7.51 500 1.8E-03 4.4E+02 3.1E-04 16 0.472 5809 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.21% 0.0036
16.896 5595.66 22.1 0.393 21.4 112.6 48.78 1.78%Sand-Slime Tailing 0.059 119.0 0.96 0.38 0.57 1 1.33 28.441 395.33 34.12 37 1.86% 2.4 47% 1.40 0.00 1.40 0 0.90 0.06 0.97 1.0 0.051 42.27 76.39 0.108 2.13 0.94 0.34 0.80 1.08 1.0 0.038 2.39 81.44 0.130 4.69 3.41 2 7.56 500 1.8E-03 4.6E+02 3.0E-04 10 0.221 7031 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.81% 0.0030
17.060 5595.50 22.9 0.460 22.6 47.8 20.69 2.01%Sand-Slime Tailing 0.059 119.0 0.97 0.39 0.58 1 1.32 29.824 414.56 35.10 38 2.10% 2.4 47% 1.41 0.00 1.41 1 0.90 0.06 0.97 1.0 0.051 42.61 77.71 0.110 2.17 0.94 0.34 0.80 1.08 1.0 0.038 2.49 87.26 0.142 5.06 3.62 2 7.61 500 1.8E-03 4.6E+02 3.0E-04 10 0.222 7017 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.84% 0.0030
17.224 5595.34 19.0 0.308 18.5 76.9 33.34 1.62%Sand-Slime Tailing 0.059 119.0 0.98 0.40 0.58 1 1.33 24.585 341.73 29.29 31 1.71% 2.5 47% 1.42 0.01 1.42 1 0.90 0.06 0.97 1.0 0.051 40.58 69.87 0.099 1.96 0.94 0.31 0.80 1.08 1.0 0.039 2.56 74.93 0.119 4.21 3.08 2 7.66 500 1.8E-03 4.6E+02 3.0E-04 10 0.222 7007 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.87% 0.0031
P = γeff*(Geff
/Gmax)
(tsf)
Volumetric Strain for Design Event, εv (%)
Incrementa
l Consolidation (ft)
CN
Volumetric
Strain for
Design
Event, εv (%)
Incremental Consolidation (ft)
TOTAL SEISMIC SETTLEMENT (FT):
Midpoint Depth at t1, z1
Shear Wave Velocity, Vs
Soil Density, ρ (tcf)b
Threshhol
d Shear Strain, γtv
(%)
Volumetri
c Strain at
15 Cycles,
εc-15 (%)Rc
Plasticity Index, PI g1 g2
Shear Strain, γ (%)a
Effective Stress at Bottom of Layer
Effective Stress at Midpoint of Layer FINAL COVER
Erosion Protection Layer
Water Storage/Rooting Zone Layer
qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Equil Pore Pressure at Midpoint of Layer (tsf)
Max Shear
Strain
Modulus,
Gmax (tsf)
Unit Weight (tcf)
Unit Weight (pcf)
Total Stress at Bottom of Layer
Total Stress at Midpoint of Layer
Equil Pore Pressure at Bottom of Layer
Cyclic Resistance Ratio
FoS
Cyclic Stress Ratio
FoS
∆qc1n qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Threshhol
d Shear
Strain, γtv (%)
Volumetric Strain at 15 Cycles, εc-15 (%)RcCNg1g2
Shear
Strain, γ ab
Seismic Settlement Analysis - Stewart et al (2004)
Shear Wave Velocity, Vs
High Compaction Layer
Platform/Random Fill Layer
Pw (u2)Pw (u2)
2013 CPT Data from ConeTec CPT Data Interpretations
fs/qt
Material
Type (as determined by fines
Unit Weight Unit Weight
Total
Stress
at time of CPT
Depth
at time of CPT Elevation qt fs qc
Effective
Stress at
time of CPT
Saturated
at time of CPT
Type Index,
Ic FC
Youd, et al (2001)
Max. Horiz. Acceleration, Amax/g: 0.15
Earthquake Moment Magnitude, M:
Idriss and Boulanger (2008)
Max. Horiz. Acceleration, Amax/g:
Earthquake Moment Magnitude, M:
Magnitude Scaling Factor, MSF:
WHITE MESA TAILINGS REPOSITORY LIQUEFACTION AND SEISMIC SETTLEMENT ANALYSES - 3-1S Elev. at Top of Layer (ft)
Elev. At Midpoint of Layer (ft)
Elev. At Bottom of Layer
Thickness of Layer (ft)
5.5
Magnitude Scaling Factor, MSF:
Equil
Pore
Pressure at time of
Conditions at t1 Liquefaction Triggering AnalysesEquil
Pore Pressure at t1CN qc1 qc1 qc1N
Normalized
Cone
Penetration Resistance, Qt
Normalize
d Friction
Ratio, Fr (%)
Total Stress at t1 Liquefiable?1=Yes
2=No
Cyclic Stress RatioEffective Stress at t1
Saturated at t1
Idriss & Boulanger (2008)
CSR
M=7.5,
s'v=1atm
Kc
Scaling Factor for stress ration, rm
Volumetric Strain Ratio for Site-Specific Design Earth
Equiv. Number of Uniform Strain Cycles, N
Youd et al. (2001)
CSR
M=7.5,
s'v=1atm
Depth at t1, z1
Soil Density, ρ
Maximum Shear Strain
Modulus,
Gmax
P =
γeff*(Geff/Gmax)
Plastici
ty Index, PI
Liquef_SeismicSettle_30Aug2015.xls Page 18 of 29
Energy Fuels Resources (USA) Inc.White Mesa Mill
Seismic Settlement Analyses
Data File: 13-52106_SP3-1S-BSC-CPT 5608.00 Water surface elevation during CPT investigation (ft 5612.56 Ground Surface Elevation at time of CPT (ft amsl)
Location: White Mesa 2013 CPT Investigation 0.15 5604.28 Water surface elevation at t0 (ft amsl)5620.47 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl)
..\..\..\6.2.3 Field Data\2013 Field Investigation\Conetec Dat 5.5 5595.59 Water surface elevation at t1 (ft amsl) 0.50 Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after pla ###### 5620.22 5619.97 0.50 0.055 110 0.028 0.014 0.00 0.00 0.028 0.014 0.08 508 1.7E-03 4.4E+02 3.0E-06 11 0.068 46696 0.00% 1.20 0.80 0.04% 0.000 0.32 0.133 0.778 0.00% 0.0000
Tailings Sands 1.69 5590.59 Water surface elevation at t2 (ft amsl)3.50 Thickness of Water Storage/Rooting Zone (ft)###### 5618.22 5616.47 3.50 0.054 107 0.215 0.121 0.00 0.00 0.215 0.121 0.69 508 1.7E-03 4.3E+02 2.8E-05 11 0.118 18930 0.00% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
Tailings Sand-Slimes 3.50 Thickness of High Compaction Layer (ft)###### 5614.72 5612.97 3.50 0.060 120 0.424 0.320 0.00 0.00 0.424 0.320 1.75 508 1.9E-03 4.8E+02 6.5E-05 11 0.152 12657 0.01% 0.65 0.75 0.02% 0.000 0.34 0.079 0.765 0.00% 0.0000
Tailings Slimes 1.44 0.41 Thickness of Random/Platform Fill on on top of existing interim cover (ft) ###### 5612.77 5612.56 0.41 0.050 101 0.445 0.434 0.00 0.00 0.445 0.434 2.35 508 1.6E-03 4.0E+02 1.0E-04 11 0.164 11140 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
Interim Cover 0.47 887.10 Additional Stress due to Final Cover Placement, ΔσFC (psf)
Cells Requiring User Input/Manipulation 2.21 2.21 7.51 5590.59 Elevation of bottom of tailings (liner) (ft amsl)
0.235
rd Cσ Kσ Ka rd Dr f Kσ Ka Avg
(ft) (ft amsl) TSF TSF TSF (ft) PSI (%) (tcf) (pcf) (tsf)(tsf)(tsf) 1=Yes TSF MPa % (tsf)(tsf)(tsf) 1=Yes FoS m
0=No 0=No (ft/sec) (tcf) tsf tsf (%)
P = γeff*(Geff
/Gmax)
(tsf)
Volumetric Strain for Design Event, εv (%)
Incrementa
l Consolidation (ft)
CN
Volumetric
Strain for
Design
Event, εv (%)
Incremental Consolidation (ft)
TOTAL SEISMIC SETTLEMENT (FT):
Midpoint Depth at t1, z1
Shear Wave Velocity, Vs
Soil Density, ρ (tcf)b
Threshhol
d Shear Strain, γtv
(%)
Volumetri
c Strain at
15 Cycles,
εc-15 (%)Rc
Plasticity Index, PI g1 g2
Shear Strain, γ (%)a
Effective Stress at Bottom of Layer
Effective Stress at Midpoint of Layer FINAL COVER
Erosion Protection Layer
Water Storage/Rooting Zone Layer
qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Equil Pore Pressure at Midpoint of Layer (tsf)
Max Shear
Strain
Modulus,
Gmax (tsf)
Unit Weight (tcf)
Unit Weight (pcf)
Total Stress at Bottom of Layer
Total Stress at Midpoint of Layer
Equil Pore Pressure at Bottom of Layer
Cyclic Resistance Ratio
FoS
Cyclic Stress Ratio
FoS
∆qc1n qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Threshhol
d Shear
Strain, γtv (%)
Volumetric Strain at 15 Cycles, εc-15 (%)RcCNg1g2
Shear
Strain, γ ab
Seismic Settlement Analysis - Stewart et al (2004)
Shear Wave Velocity, Vs
High Compaction Layer
Platform/Random Fill Layer
Pw (u2)Pw (u2)
2013 CPT Data from ConeTec CPT Data Interpretations
fs/qt
Material
Type (as determined by fines
Unit Weight Unit Weight
Total
Stress
at time of CPT
Depth
at time of CPT Elevation qt fs qc
Effective
Stress at
time of CPT
Saturated
at time of CPT
Type Index,
Ic FC
Youd, et al (2001)
Max. Horiz. Acceleration, Amax/g: 0.15
Earthquake Moment Magnitude, M:
Idriss and Boulanger (2008)
Max. Horiz. Acceleration, Amax/g:
Earthquake Moment Magnitude, M:
Magnitude Scaling Factor, MSF:
WHITE MESA TAILINGS REPOSITORY LIQUEFACTION AND SEISMIC SETTLEMENT ANALYSES - 3-1S Elev. at Top of Layer (ft)
Elev. At Midpoint of Layer (ft)
Elev. At Bottom of Layer
Thickness of Layer (ft)
5.5
Magnitude Scaling Factor, MSF:
Equil
Pore
Pressure at time of
Conditions at t1 Liquefaction Triggering AnalysesEquil
Pore Pressure at t1CN qc1 qc1 qc1N
Normalized
Cone
Penetration Resistance, Qt
Normalize
d Friction
Ratio, Fr (%)
Total Stress at t1 Liquefiable?1=Yes
2=No
Cyclic Stress RatioEffective Stress at t1
Saturated at t1
Idriss & Boulanger (2008)
CSR
M=7.5,
s'v=1atm
Kc
Scaling Factor for stress ration, rm
Volumetric Strain Ratio for Site-Specific Design Earth
Equiv. Number of Uniform Strain Cycles, N
Youd et al. (2001)
CSR
M=7.5,
s'v=1atm
Depth at t1, z1
Soil Density, ρ
Maximum Shear Strain
Modulus,
Gmax
P =
γeff*(Geff/Gmax)
Plastici
ty Index, PI
17.388 5595.17 26.8 0.182 26.7 20.4 8.84 0.68%Sand-Slime Tailing 0.059 119.0 0.99 0.40 0.59 1 1.29 34.509 479.67 40.27 44 0.70% 2.1 47% 1.43 0.01 1.42 1 0.90 0.07 0.97 1.0 0.051 44.43 84.70 0.119 2.35 0.94 0.37 0.80 1.08 1.0 0.039 1.49 59.88 0.100 3.49 2.92 2 7.71 500 1.8E-03 4.6E+02 3.0E-04 10 0.222 6998 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.90% 0.0031
17.552 5595.01 24.3 0.073 24.2 8.2 3.55 0.30%Sand-Slime Tailing 0.059 119.0 1.00 0.41 0.59 1 1.29 31.333 435.53 36.47 39 0.31% 2.0 47% 1.44 0.02 1.42 1 0.90 0.06 0.97 1.0 0.051 43.09 79.56 0.112 2.21 0.94 0.35 0.80 1.08 1.0 0.039 1.31 47.86 0.090 3.10 2.65 2 7.76 500 1.8E-03 4.6E+02 3.0E-04 10 0.222 6988 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.94% 0.0032
17.716 5594.84 21.7 0.073 21.6 11.9 5.16 0.34%Sand-Slime Tailing 0.059 119.0 1.01 0.41 0.60 1 1.30 27.980 388.93 32.61 35 0.35% 2.1 47% 1.45 0.02 1.43 1 0.89 0.06 0.97 1.0 0.051 41.74 74.35 0.105 2.06 0.94 0.33 0.80 1.08 1.0 0.039 1.42 46.25 0.089 3.02 2.54 2 7.81 500 1.8E-03 4.6E+02 3.1E-04 10 0.222 6979 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.97% 0.0032
17.880 5594.68 17.6 0.073 17.5 13.5 5.83 0.42%Sand-Slime Tailing 0.059 119.0 1.02 0.42 0.60 1 1.30 22.828 317.31 26.64 27 0.44% 2.2 47% 1.46 0.03 1.43 1 0.89 0.06 0.97 1.0 0.051 39.64 66.29 0.095 1.86 0.94 0.30 0.80 1.07 1.0 0.039 1.68 44.88 0.087 2.95 2.41 2 7.86 500 1.8E-03 4.6E+02 3.1E-04 10 0.223 6969 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 2.00% 0.0033
21.970 5590.59 Sand-Slime Tailing 0.059 119.0 1.71 0.09 1.61 1 9.11 538 1.8E-03 5.3E+02 3.1E-04 10 0.229 6637 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.92% 0.0786
Extra layer added to analyze seismic settlement of tailings below the bottom of CPT investigation.
Liquef_SeismicSettle_30Aug2015.xls Page 19 of 29
Energy Fuels Resources (USA) Inc.White Mesa Mill
Seismic Settlement Analyses
Data File: 13-52106_SP3-2C-BSC-CPT 5605.30 Water surface elevation during CPT investigation (ft5610.82 Ground Surface Elevation at time of CPT (ft amsl)
Location: White Mesa 2013 CPT Investigation 0.15 5602.54 Water surface elevation at t0 (ft amsl)5621.51 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl)
..\..\..\6.2.3 Field Data\2013 Field Investigation\Conetec Dat 5.5 5591.64 Water surface elevation at t1 (ft amsl)0.50 Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after plac ###### 5621.26 5621.01 0.50 0.055 110 0.028 0.014 0.00 0.00 0.028 0.014 0.08 508 1.7E-03 4.4E+02 3.0E-06 11 0.068 46696 0.00% 1.20 0.80 0.04% 0.000 0.32 0.133 0.778 0.00% 0.0000
Tailings Sands 1.69 5586.64 Water surface elevation at t2 (ft amsl)3.50 Thickness of Water Storage/Rooting Zone (ft) ###### 5619.26 5617.51 3.50 0.054 107 0.215 0.121 0.00 0.00 0.215 0.121 0.69 508 1.7E-03 4.3E+02 2.8E-05 11 0.118 18930 0.00% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
Tailings Sand-Slimes 3.50 Thickness of High Compaction Layer (ft)###### 5615.76 5614.01 3.50 0.060 120 0.424 0.320 0.00 0.00 0.424 0.320 1.75 508 1.9E-03 4.8E+02 6.5E-05 11 0.152 12657 0.01% 0.65 0.75 0.02% 0.000 0.34 0.079 0.765 0.00% 0.0000Tailings Slimes 1.44 3.19 Thickness of Random/Platform Fill on on top of existing interim cover (ft) ###### 5612.42 5610.82 3.19 0.050 101 0.585 0.504 0.00 0.00 0.585 0.504 2.77 508 1.6E-03 4.0E+02 1.2E-04 11 0.170 10470 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
Interim Cover 0.47 1167.12 Additional Stress due to Final Cover Placement, ΔσFC (psf)
Cells Requiring User Input/Manipulation 2.21 2.21 7.51 5586.64 Elevation of bottom of tailings (liner) (ft amsl)
0.397
rd Cσ Kσ Ka rd Dr f f Kσ Ka Avg
(ft) (ft amsl) TSF TSF TSF (ft) PSI (%) (tcf) (pcf) (tsf)(tsf)(tsf) 1=Yes TSF MPa % (tsf)(tsf)(tsf) 1=Yes FoS m
0=No 0=No (ft/sec) (tcf) tsf tsf (%)
0.164 5610.66 9.5 0.818 9.5 10.4 4.49 8.58%Interim Cover 0.050 100.7 0.01 0.00 0.01 0 1.70 16.099 223.78 18.83 1153 8.59% 2.2 ### 0.59 0.00 0.59 0 1.00 0.05 1.02 1.0 0.059 36.93 55.75 0.083 1.41 0.97 0.25 0.80 0.80 2.53 1.0 0.017 1.65 31.02 0.076 183.93 92.67 2 3.31 594 1.6E-03 5.5E+02 1.0E-04 11 0.177 9799 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
0.328 5610.49 67.8 0.428 67.8 8.7 3.76 0.63%Interim Cover 0.050 100.7 0.02 0.00 0.02 0 1.70 115.243 1601.88 133.95 4105 0.63% 1.0 ### 0.60 0.00 0.60 0 1.00 0.14 1.05 1.0 0.061 77.33 211.28 1.000 16.47 0.97 0.67 0.67 0.67 3.75 1.0 0.011 1.00 133.95 0.304 368.22 192.34 2 3.36 594 1.6E-03 5.5E+02 1.1E-04 11 0.178 9742 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
0.492 5610.33 104.7 0.603 104.6 7.9 3.44 0.58%Interim Cover 0.050 100.7 0.02 0.00 0.02 0 1.70 177.871 2472.41 206.68 4223 0.58% 1.0 ### 0.61 0.00 0.61 0 1.00 0.28 1.10 1.0 0.064 102.85 309.54 1.000 15.74 0.97 0.83 0.58 0.58 4.36 1.0 0.010 1.00 206.68 1.000 809.03 412.39 2 3.41 594 1.6E-03 5.5E+02 1.1E-04 11 0.179 9687 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00%0.0000
0.656 5610.16 73.4 0.695 73.3 5.6 2.42 0.95%Interim Cover 0.050 100.7 0.03 0.00 0.03 0 1.70 124.661 1732.79 144.86 2219 0.95% 1.2 ### 0.62 0.00 0.62 0 1.00 0.15 1.05 1.0 0.061 81.15 226.01 1.000 16.46 0.97 0.69 0.65 0.65 3.10 1.0 0.014 1.00 144.86 0.363 220.15 118.30 2 3.46 594 1.6E-03 5.5E+02 1.1E-04 11 0.179 9633 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
0.820 5610.00 90.8 1.617 90.7 4.4 1.90 1.78%Interim Cover 0.050 100.7 0.04 0.00 0.04 0 1.70 154.241 2143.95 179.20 2196 1.78% 1.5 ### 0.62 0.00 0.62 0 1.00 0.21 1.07 1.0 0.062 93.21 272.40 1.000 16.21 0.97 0.77 0.61 0.61 3.23 1.0 0.013 1.00 179.20 1.000 485.80 251.00 2 3.51 594 1.6E-03 5.5E+02 1.1E-04 11 0.180 9580 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
0.984 5609.84 98.7 0.951 98.7 4.8 2.06 0.96%Interim Cover 0.050 100.7 0.05 0.00 0.05 0 1.70 167.790 2332.28 194.94 1991 0.96% 1.2 ### 0.63 0.00 0.63 0 1.00 0.25 1.08 1.0 0.062 98.73 293.67 1.000 16.07 0.97 0.81 0.60 0.60 3.13 1.0 0.014 1.00 194.94 1.000 404.99 210.53 2 3.56 594 1.6E-03 5.5E+02 1.1E-04 11 0.181 9528 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.148 5609.67 142.9 1.153 142.9 5.8 2.53 0.81%Interim Cover 0.050 100.7 0.06 0.00 0.06 0 1.70 242.879 3376.02 282.16 2470 0.81% 1.1 ### 0.64 0.00 0.64 0 1.00 0.30 1.09 1.0 0.063 129.34 411.50 1.000 15.89 0.97 0.97 0.60 0.60 2.95 1.0 0.015 1.00 282.16 1.000 347.27 181.58 2 3.61 594 1.6E-03 5.5E+02 1.1E-04 11 0.181 9477 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00%0.0000
1.312 5609.51 142.3 0.768 142.3 5.6 2.43 0.54%Interim Cover 0.050 100.7 0.07 0.00 0.07 0 1.70 241.910 3362.55 281.03 2153 0.54% 1.0 ### 0.65 0.00 0.65 0 1.00 0.30 1.08 1.0 0.063 128.94 409.98 1.000 15.95 0.97 0.97 0.60 0.60 2.79 1.0 0.015 1.00 281.03 1.000 303.98 159.97 2 3.66 594 1.6E-03 5.5E+02 1.1E-04 11 0.182 9426 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00%0.0000
1.476 5609.34 150.3 0.964 150.3 3.4 1.49 0.64%Interim Cover 0.050 100.7 0.07 0.00 0.07 0 1.70 255.544 3552.06 296.84 2021 0.64% 1.0 ### 0.66 0.00 0.66 0 1.00 0.30 1.08 1.0 0.062 134.49 431.33 1.000 16.01 0.97 0.99 0.60 0.60 2.66 1.0 0.016 1.00 296.84 1.000 270.31 143.16 2 3.71 594 1.6E-03 5.5E+02 1.2E-04 11 0.182 9377 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00%0.0000
1.640 5609.18 142.9 0.948 142.9 4.8 2.08 0.66%Interim Cover 0.050 100.7 0.08 0.00 0.08 0 1.70 242.862 3375.78 282.13 1729 0.66% 1.1 ### 0.67 0.00 0.67 0 1.00 0.30 1.08 1.0 0.062 129.33 411.46 1.000 16.06 0.97 0.97 0.60 0.60 2.55 1.0 0.017 1.00 282.13 1.000 243.38 129.72 2 3.76 594 1.6E-03 5.5E+02 1.2E-04 11 0.183 9329 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00%0.0000
1.804 5609.02 129.8 0.906 129.8 4.9 2.12 0.70%Interim Cover 0.050 100.7 0.09 0.00 0.09 0 1.70 220.643 3066.94 256.32 1428 0.70% 1.1 ### 0.67 0.00 0.67 0 1.00 0.30 1.07 1.0 0.062 120.27 376.60 1.000 16.12 0.97 0.92 0.60 0.60 2.46 1.0 0.017 1.00 256.32 1.000 221.34 118.73 2 3.81 594 1.6E-03 5.5E+02 1.2E-04 11 0.184 9281 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00%0.0000
1.968 5608.85 134.9 1.437 134.9 3.7 1.61 1.07%Interim Cover 0.050 100.7 0.10 0.00 0.10 0 1.70 229.313 3187.45 266.38 1360 1.07% 1.3 ### 0.68 0.00 0.68 0 1.00 0.30 1.07 1.0 0.062 123.80 390.18 1.000 16.19 0.97 0.94 0.60 0.60 2.37 1.0 0.018 1.00 266.38 1.000 202.98 109.58 2 3.86 594 1.6E-03 5.5E+02 1.2E-04 11 0.184 9234 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00%0.0000
2.133 5608.69 130.9 0.753 130.9 2.7 1.15 0.58%Interim Cover 0.050 100.7 0.11 0.00 0.11 0 1.70 222.496 3092.69 258.45 1218 0.58% 1.1 ### 0.69 0.00 0.69 0 1.00 0.30 1.07 1.0 0.062 121.02 379.47 1.000 16.25 0.97 0.93 0.60 0.60 2.30 1.0 0.019 1.00 258.45 1.000 187.44 101.85 2 3.91 594 1.6E-03 5.5E+02 1.2E-04 11 0.185 9188 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00%0.0000
2.297 5608.52 120.4 0.968 120.4 3.4 1.47 0.80%Interim Cover 0.050 100.7 0.12 0.00 0.12 0 1.70 204.714 2845.52 237.80 1040 0.80% 1.2 ### 0.70 0.00 0.70 0 1.00 0.30 1.06 1.0 0.061 113.77 351.58 1.000 16.32 0.97 0.89 0.60 0.60 2.23 1.0 0.019 1.00 237.80 1.000 174.12 95.22 2 3.96 594 1.6E-03 5.5E+02 1.2E-04 11 0.185 9143 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.461 5608.36 98.7 1.136 98.7 3.8 1.64 1.15%Interim Cover 0.050 100.7 0.12 0.00 0.12 0 1.70 167.773 2332.04 194.90 796 1.15% 1.4 ### 0.71 0.00 0.71 0 1.00 0.25 1.05 1.0 0.060 98.72 293.62 1.000 16.55 0.97 0.81 0.60 0.60 2.17 1.0 0.020 1.00 194.90 1.000 162.57 89.56 2 4.01 594 1.6E-03 5.5E+02 1.2E-04 11 0.186 9099 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.625 5608.20 75.5 1.164 75.5 3.5 1.50 1.54%Interim Cover 0.050 100.7 0.13 0.00 0.13 0 1.70 128.367 1784.30 149.13 570 1.54% 1.6 ### 0.72 0.00 0.72 0 1.00 0.16 1.03 1.0 0.059 82.66 231.79 1.000 16.88 0.97 0.71 0.65 0.65 1.94 1.0 0.022 1.00 149.13 0.388 59.23 38.05 2 4.06 594 1.6E-03 5.5E+02 1.3E-04 11 0.186 9055 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.789 5608.03 54.0 0.768 54.0 2.0 0.85 1.42%Interim Cover 0.050 100.7 0.14 0.00 0.14 0 1.70 91.749 1275.31 106.59 383 1.43% 1.6 ### 0.72 0.00 0.72 0 0.99 0.11 1.02 1.0 0.059 67.72 174.31 0.455 7.77 0.97 0.60 0.70 0.70 1.72 1.0 0.025 1.00 106.59 0.193 27.65 17.71 2 4.11 594 1.6E-03 5.5E+02 1.3E-04 11 0.187 9012 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.953 5607.87 50.1 0.997 50.1 1.2 0.53 1.99%Interim Cover 0.050 100.7 0.15 0.00 0.15 0 1.70 85.136 1183.39 98.90 336 2.00% 1.8 ### 0.73 0.00 0.73 0 0.99 0.11 1.02 1.0 0.058 65.03 163.92 0.354 6.06 0.97 0.57 0.71 0.71 1.66 1.0 0.026 1.10 108.69 0.199 27.05 16.55 2 4.16 594 1.6E-03 5.5E+02 1.3E-04 11 0.187 8969 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
3.117 5607.70 56.9 1.094 56.9 2.7 1.18 1.92%Interim Cover 0.050 100.7 0.16 0.00 0.16 0 1.70 96.713 1344.31 112.36 362 1.93% 1.8 ### 0.74 0.00 0.74 0 0.99 0.12 1.02 1.0 0.058 69.75 182.11 0.572 9.79 0.97 0.61 0.69 0.69 1.68 1.0 0.025 1.08 121.15 0.245 31.54 20.67 2 4.21 495 1.6E-03 3.8E+02 1.9E-04 11 0.188 8928 0.03% 2.00 0.65 0.03% 0.002 0.34 0.079 0.765 0.26% 0.0004
3.281 5607.54 64.2 0.738 64.2 2.1 0.92 1.15%Sand Tailings 0.051 102.8 0.17 0.00 0.17 0 1.70 109.174 1517.52 126.83 387 1.15% 1.6 ### 0.75 0.00 0.75 0 0.99 0.13 1.02 1.0 0.058 54.51 181.34 0.558 9.56 0.97 0.65 0.67 0.67 1.71 1.0 0.025 1.00 126.83 0.270 32.92 21.24 2 4.26 495 1.6E-03 3.9E+02 1.9E-04 0 0.193 11488 0.04% 2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.04% 0.0001
3.445 5607.38 52.1 0.886 52.1 2.0 0.87 1.70%Sand-Slime Tailin 0.047 93.3 0.17 0.00 0.17 0 1.70 88.570 1231.12 102.89 300 1.71% 1.8 ### 0.76 0.00 0.76 0 0.99 0.11 1.01 1.0 0.058 66.39 169.28 0.400 6.89 0.97 0.59 0.71 0.71 1.60 1.0 0.027 1.08 110.88 0.207 24.13 15.51 2 4.31 495 1.4E-03 3.5E+02 2.1E-04 10 0.189 9084 0.04% 2.00 0.65 0.03% 0.005 0.34 0.079 0.765 0.74% 0.0012
3.609 5607.21 29.1 1.041 29.1 0.7 0.30 3.58%Slime Tailings 0.041 82.7 0.18 0.00 0.18 0 1.70 49.436 687.16 57.43 161 3.60% 2.2 ### 0.76 0.00 0.76 0 0.99 0.08 1.01 1.0 0.058 50.09 107.51 0.155 2.69 0.97 0.44 0.78 0.78 1.41 1.0 0.030 1.62 93.01 0.155 17.39 10.04 2 4.36 495 1.3E-03 3.1E+02 2.4E-04 16 0.442 7445 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.52% 0.0025
3.773 5607.05 21.5 1.042 21.5 1.5 0.65 4.84%Slime Tailings 0.041 82.7 0.19 0.00 0.19 0 1.70 36.550 508.05 42.47 114 4.89% 2.4 ### 0.77 0.00 0.77 0 0.99 0.07 1.01 1.0 0.058 44.88 87.35 0.123 2.13 0.97 0.38 0.80 0.80 1.36 1.0 0.031 2.21 93.92 0.157 17.01 9.57 2 4.41 495 1.3E-03 3.1E+02 2.4E-04 16 0.442 7417 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.55% 0.0025
3.937 5606.88 16.3 0.676 16.3 3.3 1.44 4.14%Slime Tailings 0.041 82.7 0.19 0.00 0.19 0 1.70 27.744 385.64 32.26 83 4.19% 2.4 ### 0.78 0.00 0.78 0 0.99 0.06 1.01 1.0 0.058 41.32 73.59 0.104 1.81 0.97 0.33 0.80 0.80 1.35 1.0 0.032 2.34 75.43 0.120 12.54 7.17 2 4.46 495 1.3E-03 3.1E+02 2.4E-04 16 0.443 7391 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.59% 0.0026
4.101 5606.72 18.3 0.612 18.2 5.0 2.18 3.35%Slime Tailings 0.041 82.7 0.20 0.00 0.20 0 1.70 31.008 431.01 36.08 90 3.39% 2.3 ### 0.78 0.00 0.78 0 0.99 0.06 1.01 1.0 0.057 42.65 78.73 0.111 1.93 0.97 0.35 0.80 0.80 1.34 1.0 0.032 1.99 71.97 0.115 11.59 6.76 2 4.51 495 1.3E-03 3.1E+02 2.4E-04 16 0.443 7364 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.62% 0.0027
4.265 5606.55 15.1 0.610 15.0 4.1 1.76 4.05%Slime Tailings 0.041 82.7 0.21 0.00 0.21 0 1.70 25.568 355.40 29.75 72 4.11% 2.4 ### 0.79 0.00 0.79 0 0.99 0.06 1.01 1.0 0.057 40.45 70.19 0.100 1.74 0.97 0.31 0.80 0.80 1.33 1.0 0.032 2.49 74.20 0.118 11.54 6.64 2 4.56 495 1.3E-03 3.1E+02 2.5E-04 16 0.444 7338 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.65% 0.0027
4.429 5606.39 19.3 0.601 19.3 4.8 2.09 3.11%Slime Tailings 0.041 82.7 0.21 0.00 0.21 0 1.70 32.810 456.06 38.17 89 3.14% 2.3 ### 0.80 0.00 0.80 0 0.99 0.06 1.00 1.0 0.057 43.38 81.55 0.115 2.00 0.96 0.36 0.80 0.80 1.32 1.0 0.032 1.92 73.46 0.117 11.07 6.54 2 4.61 495 1.3E-03 3.1E+02 2.5E-04 16 0.444 7312 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.68% 0.0028
4.593 5606.23 24.6 0.687 24.5 4.0 1.73 2.80%Sand-Slime Tailin 0.047 93.3 0.22 0.00 0.22 0 1.70 41.701 579.64 48.48 110 2.82% 2.2 ### 0.80 0.00 0.80 0 0.98 0.07 1.00 1.0 0.057 47.31 95.79 0.136 2.37 0.96 0.40 0.80 0.80 1.31 1.0 0.032 1.66 80.63 0.129 11.78 7.07 2 4.66 495 1.4E-03 3.5E+02 2.2E-04 10 0.192 8854 0.04% 2.00 0.65 0.03% 0.006 0.34 0.079 0.765 0.95% 0.0016
4.757 5606.06 24.5 0.631 24.5 2.1 0.90 2.57%Sand-Slime Tailin 0.047 93.3 0.23 0.00 0.23 0 1.70 41.684 579.41 48.44 106 2.60% 2.2 ### 0.81 0.00 0.81 0 0.98 0.07 1.00 1.0 0.057 47.29 95.73 0.136 2.38 0.96 0.40 0.80 0.80 1.30 1.0 0.033 1.62 78.55 0.125 11.06 6.72 2 4.71 495 1.4E-03 3.5E+02 2.2E-04 10 0.193 8819 0.04% 2.00 0.65 0.03% 0.006 0.34 0.079 0.765 0.98% 0.0016
4.921 5605.90 23.4 0.399 23.4 5.1 2.21 1.71%Sand-Slime Tailin 0.047 93.3 0.24 0.00 0.24 0 1.70 39.712 552.00 46.19 98 1.72% 2.1 ### 0.82 0.00 0.82 0 0.98 0.07 1.00 1.0 0.057 46.50 92.69 0.131 2.30 0.96 0.39 0.80 0.80 1.29 1.0 0.033 1.41 65.26 0.106 9.06 5.68 2 4.76 495 1.4E-03 3.5E+02 2.3E-04 10 0.193 8785 0.05% 2.00 0.65 0.03% 0.007 0.34 0.079 0.765 1.01% 0.0017
5.085 5605.73 25.5 0.327 25.5 7.2 3.11 1.28%Sand-Slime Tailin 0.047 93.3 0.24 0.00 0.24 0 1.70 43.282 601.62 50.36 103 1.29% 2.0 ### 0.83 0.00 0.83 0 0.98 0.07 1.00 1.0 0.057 47.96 98.32 0.140 2.46 0.96 0.41 0.80 0.80 1.29 1.0 0.033 1.27 63.77 0.104 8.64 5.55 2 4.81 495 1.4E-03 3.5E+02 2.3E-04 10 0.194 8751 0.05% 2.00 0.65 0.03% 0.007 0.34 0.079 0.765 1.05% 0.0017
5.249 5605.57 20.3 0.310 20.3 1.4 0.60 1.53%Sand-Slime Tailin 0.047 93.3 0.25 0.00 0.25 0 1.70 34.425 478.51 40.00 79 1.55% 2.1 ### 0.84 0.00 0.84 0 0.98 0.06 1.00 1.0 0.057 44.33 84.33 0.119 2.09 0.96 0.37 0.80 0.80 1.28 1.0 0.033 1.47 58.96 0.099 7.97 5.03 2 4.86 495 1.4E-03 3.5E+02 2.3E-04 10 0.194 8718 0.05% 2.00 0.65 0.03% 0.007 0.34 0.079 0.765 1.08% 0.0018
5.413 5605.41 11.2 0.265 11.2 0.7 0.29 2.37%Slime Tailings 0.041 82.7 0.26 0.00 0.26 0 1.70 19.040 264.66 22.12 42 2.42% 2.4 ### 0.84 0.00 0.84 0 0.98 0.05 1.00 1.0 0.057 37.79 59.91 0.088 1.55 0.96 0.27 0.80 0.80 1.27 1.0 0.033 2.50 55.31 0.096 7.51 4.53 2 4.91 495 1.3E-03 3.1E+02 2.6E-04 16 0.447 7148 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.90% 0.0031
5.577 5605.24 7.5 0.141 7.5 0.6 0.27 1.88%Slime Tailings 0.057 113.1 0.27 0.00 0.27 1 1.70 12.750 177.23 14.82 27 1.95% 2.5 ### 0.85 0.00 0.85 0 0.98 0.05 1.00 1.0 0.057 35.25 50.06 0.078 1.37 0.96 0.22 0.80 0.80 1.26 1.0 0.034 2.95 43.70 0.086 6.59 3.98 2 4.96 495 1.8E-03 4.3E+02 1.9E-04 16 0.447 7116 0.04% 2.00 0.65 0.03% 0.004 0.34 0.079 0.765 0.60% 0.0010
5.741 5605.08 7.7 0.089 7.7 1.1 0.47 1.15%Sand-Slime Tailin 0.059 119.0 0.28 0.01 0.27 1 1.70 13.090 181.95 15.22 27 1.20% 2.4 ### 0.86 0.00 0.86 0 0.98 0.05 1.00 1.0 0.057 35.64 50.85 0.078 1.39 0.96 0.23 0.80 0.80 1.26 1.0 0.034 2.36 35.90 0.080 5.99 3.69 2 5.01 495 1.8E-03 4.5E+02 1.9E-04 10 0.196 8608 0.03% 2.00 0.65 0.03% 0.001 0.34 0.079 0.765 0.11% 0.0002
5.905 5604.91 9.9 0.084 9.9 2.9 1.27 0.84%Sand-Slime Tailin 0.059 119.0 0.29 0.01 0.28 1 1.70 16.881 234.65 19.64 35 0.87% 2.2 ### 0.87 0.00 0.87 0 0.98 0.05 1.00 1.0 0.056 37.19 56.83 0.084 1.50 0.96 0.26 0.80 0.80 1.26 1.0 0.034 1.79 35.17 0.079 5.85 3.67 2 5.06 495 1.8E-03 4.5E+02 1.9E-04 10 0.196 8568 0.03% 2.00 0.65 0.03% 0.001 0.34 0.079 0.765 0.18% 0.0003
6.069 5604.75 5.9 0.088 5.9 2.9 1.27 1.50%Slime Tailings 0.057 113.1 0.30 0.02 0.28 1 1.70 9.962 138.47 11.61 20 1.58% 2.6 ### 0.88 0.00 0.88 0 0.98 0.05 1.00 1.0 0.056 34.13 45.74 0.074 1.30 0.96 0.20 0.80 0.80 1.25 1.0 0.034 3.28 38.05 0.082 5.94 3.62 2 5.11 495 1.8E-03 4.3E+02 2.0E-04 16 0.449 7019 0.04% 2.00 0.65 0.03% 0.005 0.34 0.079 0.765 0.71% 0.0012
6.234 5604.59 5.6 0.085 5.5 4.4 1.92 1.53%Slime Tailings 0.057 113.1 0.31 0.02 0.28 1 1.70 9.418 130.91 10.99 19 1.62% 2.6 ### 0.89 0.00 0.89 0 0.98 0.05 1.00 1.0 0.056 33.92 44.91 0.073 1.29 0.96 0.19 0.80 0.80 1.25 1.0 0.034 3.48 38.27 0.082 5.86 3.58 2 5.16 495 1.8E-03 4.3E+02 2.0E-04 16 0.449 6989 0.04% 2.00 0.65 0.03% 0.005 0.34 0.079 0.765 0.74% 0.0012
6.398 5604.42 7.0 0.088 6.9 6.4 2.77 1.26%Slime Tailings 0.057 113.1 0.32 0.03 0.29 1 1.70 11.798 163.99 13.78 23 1.32% 2.5 ### 0.90 0.00 0.90 0 0.97 0.05 1.00 1.0 0.056 34.89 48.67 0.076 1.36 0.96 0.21 0.80 0.80 1.24 1.0 0.034 2.75 37.89 0.082 5.76 3.56 2 5.21 495 1.8E-03 4.3E+02 2.0E-04 16 0.450 6959 0.04% 2.00 0.65 0.03% 0.005 0.34 0.079 0.765 0.77% 0.0013
6.562 5604.26 7.1 0.082 7.1 6.8 2.93 1.15%Slime Tailings 0.057 113.1 0.32 0.03 0.29 1 1.70 12.019 167.06 14.04 23 1.21% 2.5 ### 0.91 0.00 0.91 0 0.97 0.05 1.00 1.0 0.056 34.98 49.02 0.077 1.36 0.96 0.22 0.80 0.80 1.24 1.0 0.034 2.64 37.10 0.081 5.63 3.50 2 5.26 495 1.8E-03 4.3E+02 2.1E-04 16 0.450 6930 0.04% 2.00 0.65 0.03% 0.005 0.34 0.079 0.765 0.81% 0.0013
6.726 5604.09 10.7 0.082 10.6 7.0 3.03 0.77%Sand-Slime Tailin 0.059 119.0 0.33 0.04 0.30 1 1.70 18.088 251.42 21.09 35 0.79% 2.2 ### 0.92 0.00 0.92 0 0.97 0.05 1.00 1.0 0.056 37.70 58.79 0.087 1.54 0.96 0.27 0.80 0.80 1.24 1.0 0.034 1.74 36.71 0.081 5.53 3.54 2 5.31 495 1.8E-03 4.5E+02 2.0E-04 10 0.199 8384 0.03% 2.00 0.65 0.03% 0.003 0.34 0.079 0.765 0.40% 0.0007
6.890 5603.93 13.4 0.114 13.4 5.9 2.54 0.85%Sand-Slime Tailin 0.059 119.0 0.34 0.04 0.30 1 1.70 22.746 316.17 26.49 43 0.87% 2.2 ### 0.93 0.00 0.93 0 0.97 0.06 1.00 1.0 0.056 39.59 66.08 0.095 1.70 0.96 0.30 0.80 0.80 1.23 1.0 0.034 1.60 42.25 0.085 5.75 3.73 2 5.36 495 1.8E-03 4.5E+02 2.0E-04 10 0.199 8347 0.03% 2.00 0.65 0.03% 0.003 0.34 0.079 0.765 0.44% 0.0007
7.054 5603.77 15.0 0.134 14.9 5.2 2.24 0.90%Sand-Slime Tailin 0.059 119.0 0.35 0.05 0.31 1 1.70 25.364 352.56 29.52 48 0.92% 2.1 ### 0.94 0.00 0.94 0 0.97 0.06 1.00 1.0 0.056 40.66 70.18 0.100 1.79 0.96 0.31 0.80 0.80 1.23 1.0 0.034 1.55 45.64 0.088 5.86 3.82 2 5.41 495 1.8E-03 4.5E+02 2.0E-04 10 0.200 8311 0.03% 2.00 0.65 0.03% 0.003 0.34 0.079 0.765 0.48% 0.0008
7.218 5603.60 22.4 0.135 22.4 8.0 3.48 0.60%Sand-Slime Tailin 0.059 119.0 0.36 0.05 0.31 1 1.70 38.029 528.60 44.27 71 0.61% 1.9 ### 0.95 0.00 0.95 0 0.97 0.07 0.99 1.0 0.056 45.83 90.09 0.127 2.28 0.96 0.38 0.80 0.80 1.23 1.0 0.034 1.19 52.90 0.094 6.15 4.22 2 5.46 495 1.8E-03 4.5E+02 2.0E-04 10 0.200 8276 0.04% 2.00 0.65 0.03% 0.003 0.34 0.079 0.765 0.52% 0.0008
7.382 5603.44 17.5 0.162 17.4 10.4 4.51 0.93%Sand-Slime Tailin 0.059 119.0 0.37 0.06 0.32 1 1.70 29.580 411.16 34.48 54 0.95% 2.1 ### 0.96 0.00 0.96 0 0.97 0.06 0.99 1.0 0.056 42.40 76.88 0.108 1.95 0.96 0.34 0.80 0.80 1.22 1.0 0.035 1.47 50.71 0.092 5.96 3.95 2 5.51 495 1.8E-03 4.5E+02 2.1E-04 10 0.201 8241 0.04% 2.00 0.65 0.03% 0.004 0.34 0.079 0.765 0.55% 0.0009
7.546 5603.27 15.5 0.200 15.4 24.6 10.65 1.29%Sand-Slime Tailin 0.059 119.0 0.38 0.06 0.32 1 1.70 26.112 362.96 30.63 47 1.32% 2.2 ### 0.97 0.00 0.97 0 0.97 0.06 0.99 1.0 0.056 41.04 71.67 0.102 1.83 0.96 0.32 0.80 0.80 1.22 1.0 0.035 1.77 54.31 0.095 6.05 3.94 2 5.56 495 1.8E-03 4.5E+02 2.1E-04 10 0.201 8206 0.04% 2.00 0.65 0.03% 0.004 0.34 0.079 0.765 0.59% 0.0010
7.710 5603.11 17.0 0.227 16.8 44.3 19.18 1.33%Sand-Slime Tailin 0.059 119.0 0.39 0.07 0.32 1 1.70 28.492 396.04 33.64 51 1.36% 2.2 ### 0.98 0.00 0.98 0 0.97 0.06 0.99 1.0 0.055 42.10 75.74 0.107 1.93 0.96 0.33 0.80 0.80 1.22 1.0 0.035 1.72 57.87 0.098 6.16 4.04 2 5.61 495 1.8E-03 4.5E+02 2.1E-04 10 0.202 8172 0.04% 2.00 0.65 0.03% 0.004 0.34 0.079 0.765 0.62% 0.0010
7.874 5602.95 17.9 0.174 17.6 42.1 18.26 0.97%Sand-Slime Tailin 0.059 119.0 0.40 0.07 0.33 1 1.70 29.903 415.65 35.25 53 1.00% 2.1 ### 0.99 0.00 0.99 0 0.96 0.06 0.99 1.0 0.055 42.66 77.91 0.110 1.99 0.96 0.34 0.80 0.80 1.21 1.0 0.035 1.51 53.23 0.094 5.83 3.91 2 5.66 495 1.8E-03 4.5E+02 2.1E-04 10 0.203 8138 0.04% 2.00 0.65 0.03% 0.004 0.34 0.079 0.765 0.66% 0.0011
8.038 5602.78 20.6 0.144 20.4 32.2 13.94 0.70%Sand-Slime Tailin 0.059 119.0 0.41 0.08 0.33 1 1.70 34.680 482.05 40.68 60 0.71% 2.0 ### 1.00 0.00 1.00 0 0.96 0.07 0.99 1.0 0.055 44.57 85.24 0.120 2.17 0.96 0.37 0.80 0.80 1.21 1.0 0.035 1.30 52.92 0.094 5.73 3.95 2 5.71 495 1.8E-03 4.5E+02 2.1E-04 10 0.203 8105 0.04% 2.00 0.65 0.03% 0.004 0.34 0.079 0.765 0.69% 0.0011
8.202 5602.62 26.4 0.168 26.2 32.9 14.27 0.64%Sand-Slime Tailin 0.059 119.0 0.42 0.08 0.34 1 1.70 44.557 619.34 52.16 77 0.65% 1.9 ### 1.01 0.00 1.01 0 0.96 0.07 0.99 1.0 0.055 48.59 100.75 0.144 2.61 0.96 0.42 0.79 0.79 1.21 1.0 0.035 1.18 61.54 0.102 6.13 4.37 2 5.76 495 1.8E-03 4.5E+02 2.2E-04 10 0.204 8072 0.04% 2.00 0.65 0.03% 0.005 0.34 0.079 0.765 0.72% 0.0012
8.366 5602.45 29.9 0.252 29.7 36.5 15.81 0.84%Sand-Slime Tailin 0.059 119.0 0.43 0.09 0.34 1 1.70 50.405 700.63 58.99 86 0.86% 1.9 ### 1.02 0.00 1.02 0 0.96 0.08 0.99 1.0 0.055 50.99 109.98 0.160 2.91 0.96 0.44 0.78 0.78 1.23 1.0 0.034 1.21 71.32 0.114 6.77 4.84 2 5.81 495 1.8E-03 4.5E+02 2.2E-04 10 0.204 8040 0.04% 2.00 0.65 0.03% 0.005 0.34 0.079 0.765 0.75% 0.0012
8.530 5602.29 22.3 0.277 22.1 28.4 12.32 1.24%Sand-Slime Tailin 0.059 119.0 0.44 0.09 0.35 1 1.70 37.621 522.93 44.04 63 1.27% 2.1 ### 1.03 0.00 1.03 0 0.96 0.07 0.99 1.0 0.055 45.75 89.79 0.127 2.31 0.96 0.38 0.80 0.80 1.20 1.0 0.035 1.52 66.73 0.108 6.33 4.32 2 5.86 495 1.8E-03 4.5E+02 2.2E-04 10 0.205 8008 0.04% 2.00 0.65 0.03% 0.005 0.34 0.079 0.765 0.78% 0.0013
8.694 5602.13 21.8 0.392 21.5 41.9 18.15 1.80%Sand-Slime Tailin 0.059 119.0 0.45 0.10 0.35 1 1.70 36.533 507.81 42.95 60 1.84% 2.2 ### 1.04 0.00 1.04 0 0.96 0.07 0.99 1.0 0.055 45.36 88.31 0.124 2.27 0.95 0.38 0.80 0.80 1.20 1.0 0.035 1.79 77.08 0.123 7.11 4.69 2 5.91 495 1.8E-03 4.5E+02 2.2E-04 10 0.205 7977 0.04% 2.00 0.65 0.03% 0.005 0.34 0.079 0.765 0.82% 0.0013
8.858 5601.96 21.4 0.248 21.0 63.0 27.28 1.16%Sand-Slime Tailin 0.059 119.0 0.46 0.10 0.36 1 1.70 35.768 497.18 42.32 59 1.18% 2.1 ### 1.04 0.00 1.04 0 0.96 0.07 0.99 1.0 0.055 45.14 87.46 0.123 2.25 0.95 0.38 0.80 0.80 1.19 1.0 0.035 1.53 64.55 0.105 6.02 4.13 2 5.96 495 1.8E-03 4.5E+02 2.3E-04 10 0.206 7946 0.04% 2.00 0.65 0.03% 0.006 0.34 0.079 0.765 0.85% 0.0014
9.022 5601.80 29.7 0.307 29.5 36.3 15.73 1.03%Sand-Slime Tailin 0.059 119.0 0.47 0.11 0.36 1 1.70 50.044 695.61 58.57 81 1.05% 2.0 ### 1.05 0.00 1.05 0 0.96 0.08 0.98 1.0 0.054 50.84 109.41 0.159 2.91 0.95 0.44 0.78 0.78 1.21 1.0 0.035 1.29 75.74 0.120 6.81 4.86 2 6.01 495 1.8E-03 4.5E+02 2.3E-04 10 0.206 7915 0.04% 2.00 0.65 0.03% 0.006 0.34 0.079 0.765 0.88% 0.0014
9.186 5601.63 22.6 0.143 22.5 10.6 4.58 0.63%Sand-Slime Tailin 0.059 119.0 0.48 0.11 0.37 1 1.70 38.267 531.91 44.58 60 0.65% 2.0 ### 1.06 0.00 1.06 0 0.96 0.07 0.99 1.0 0.054 45.93 90.51 0.128 2.34 0.95 0.39 0.80 0.80 1.19 1.0 0.035 1.27 56.79 0.097 5.42 3.88 2 6.06 495 1.8E-03 4.5E+02 2.3E-04 10 0.206 7885 0.04% 2.00 0.65 0.03% 0.006 0.34 0.079 0.765 0.91% 0.0015
9.350 5601.47 17.7 0.143 17.7 4.4 1.92 0.81%Sand-Slime Tailin 0.059 119.0 0.49 0.12 0.37 1 1.70 30.039 417.54 34.94 46 0.83% 2.1 ### 1.07 0.00 1.07 0 0.96 0.06 0.99 1.0 0.054 42.56 77.50 0.109 2.01 0.95 0.34 0.80 0.80 1.18 1.0 0.036 1.52 53.08 0.094 5.18 3.60 2 6.11 460 1.8E-03 3.9E+02 2.7E-04 10 0.207 7856 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.57% 0.0026
9.514 5601.31 14.2 0.178 14.2 4.4 1.90 1.25%Sand-Slime Tailin 0.059 119.0 0.50 0.12 0.38 1 1.70 24.072 334.60 28.01 36 1.30% 2.3 ### 1.08 0.00 1.08 0 0.95 0.06 0.99 1.0 0.054 40.13 68.14 0.097 1.79 0.95 0.31 0.80 0.80 1.18 1.0 0.036 2.04 57.25 0.097 5.32 3.55 2 6.16 460 1.8E-03 3.9E+02 2.7E-04 10 0.207 7826 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.60% 0.0026
9.678 5601.14 11.7 0.202 11.6 7.4 3.22 1.73%Sand-Slime Tailin 0.059 119.0 0.51 0.13 0.38 1 1.70 19.737 274.34 23.01 29 1.81% 2.5 ### 1.09 0.00 1.09 0 0.95 0.05 0.99 1.0 0.054 38.37 61.39 0.089 1.64 0.95 0.28 0.80 0.80 1.18 1.0 0.036 2.72 62.50 0.103 5.54 3.59 2 6.21 460 1.8E-03 3.9E+02 2.7E-04 10 0.208 7797 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.64% 0.0027
9.842 5600.98 11.3 0.120 11.2 13.3 5.76 1.07%Sand-Slime Tailin 0.059 119.0 0.52 0.13 0.38 1 1.70 18.989 263.95 22.22 28 1.12% 2.4 ### 1.10 0.00 1.10 0 0.95 0.05 0.99 1.0 0.054 38.09 60.31 0.088 1.62 0.95 0.27 0.80 0.80 1.17 1.0 0.036 2.27 50.41 0.092 4.90 3.26 2 6.26 460 1.8E-03 3.9E+02 2.8E-04 10 0.208 7768 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.67% 0.0027
10.006 5600.81 14.4 0.083 14.3 11.9 5.15 0.58%Sand-Slime Tailin 0.059 119.0 0.53 0.14 0.39 1 1.70 24.293 337.67 28.36 36 0.60% 2.2 ### 1.11 0.00 1.11 0 0.95 0.06 0.99 1.0 0.054 40.25 68.61 0.098 1.81 0.95 0.31 0.80 0.80 1.17 1.0 0.036 1.58 44.88 0.087 4.60 3.20 2 6.31 460 1.8E-03 3.9E+02 2.8E-04 10 0.209 7740 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.71% 0.0028
10.170 5600.65 18.3 0.069 18.3 7.0 3.04 0.38%Sand-Slime Tailin 0.059 119.0 0.54 0.15 0.39 1 1.70 31.110 432.43 36.22 45 0.39% 2.0 ### 1.12 0.00 1.12 0 0.95 0.06 0.98 1.0 0.054 43.00 79.22 0.112 2.07 0.95 0.35 0.80 0.80 1.17 1.0 0.036 1.28 46.49 0.089 4.62 3.34 2 6.36 460 1.8E-03 3.9E+02 2.8E-04 10 0.209 7712 0.07% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.74% 0.0029
10.335 5600.49 20.6 0.093 20.6 5.9 2.55 0.45%Sand-Slime Tailin 0.059 119.0 0.55 0.15 0.40 1 1.68 34.682 482.08 40.35 50 0.46% 2.0 ### 1.13 0.00 1.13 0 0.95 0.07 0.98 1.0 0.054 44.45 84.81 0.119 2.22 0.95 0.37 0.80 0.80 1.17 1.0 0.036 1.27 51.31 0.093 4.76 3.49 2 6.41 460 1.8E-03 3.9E+02 2.8E-04 10 0.210 7685 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.78% 0.0029
10.499 5600.32 21.3 0.111 21.3 5.5 2.39 0.52%Sand-Slime Tailin 0.059 119.0 0.56 0.16 0.40 1 1.67 35.475 493.10 41.27 51 0.53% 2.0 ### 1.14 0.00 1.14 0 0.95 0.07 0.98 1.0 0.054 44.78 86.04 0.121 2.25 0.95 0.37 0.80 0.80 1.16 1.0 0.036 1.30 53.52 0.094 4.80 3.53 2 6.46 460 1.8E-03 3.9E+02 2.8E-04 10 0.210 7657 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.81% 0.0030
10.663 5600.16 23.3 0.126 23.3 6.1 2.63 0.54%Sand-Slime Tailin 0.059 119.0 0.57 0.16 0.41 1 1.64 38.112 529.76 44.34 56 0.55% 2.0 ### 1.15 0.00 1.15 0 0.95 0.07 0.98 1.0 0.054 45.85 90.19 0.127 2.37 0.95 0.38 0.80 0.80 1.16 1.0 0.036 1.27 56.24 0.097 4.86 3.62 2 6.51 460 1.8E-03 3.9E+02 2.9E-04 10 0.211 7630 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.85% 0.0030
10.827 5599.99 23.4 0.148 23.4 6.7 2.88 0.63%Sand-Slime Tailin 0.059 119.0 0.58 0.17 0.41 1 1.63 38.033 528.66 44.25 55 0.65% 2.0 ### 1.16 0.00 1.16 0 0.95 0.07 0.98 1.0 0.054 45.82 90.07 0.127 2.37 0.95 0.38 0.80 0.80 1.16 1.0 0.036 1.31 58.18 0.098 4.90 3.63 2 6.56 460 1.8E-03 3.9E+02 2.9E-04 10 0.211 7604 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.88% 0.0031
10.991 5599.83 23.4 0.151 23.3 6.8 2.96 0.65%Sand-Slime Tailin 0.059 119.0 0.59 0.17 0.42 1 1.62 37.699 524.02 43.87 55 0.66% 2.0 ### 1.17 0.00 1.17 0 0.94 0.07 0.98 1.0 0.053 45.69 89.55 0.126 2.36 0.95 0.38 0.80 0.80 1.16 1.0 0.036 1.33 58.30 0.098 4.85 3.61 2 6.61 460 1.8E-03 3.9E+02 2.9E-04 10 0.212 7577 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.92% 0.0031
11.155 5599.67 23.8 0.188 23.7 7.4 3.19 0.79%Sand-Slime Tailin 0.059 119.0 0.60 0.18 0.42 1 1.60 37.995 528.13 44.21 55 0.81% 2.1 ### 1.18 0.00 1.18 0 0.94 0.07 0.98 1.0 0.053 45.81 90.02 0.127 2.38 0.95 0.38 0.80 0.80 1.15 1.0 0.036 1.40 61.77 0.102 4.97 3.67 2 6.66 460 1.8E-03 3.9E+02 2.9E-04 10 0.212 7551 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.95% 0.0032
11.319 5599.50 20.6 0.235 20.6 7.4 3.21 1.14%Sand-Slime Tailin 0.059 119.0 0.61 0.18 0.43 1 1.62 33.296 462.82 38.76 47 1.17% 2.2 ### 1.19 0.00 1.19 0 0.94 0.06 0.98 1.0 0.053 43.89 82.65 0.116 2.18 0.95 0.36 0.80 0.80 1.15 1.0 0.036 1.70 65.83 0.107 5.14 3.66 2 6.71 460 1.8E-03 3.9E+02 3.0E-04 10 0.212 7526 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.99% 0.0033
11.483 5599.34 17.6 0.198 17.5 8.1 3.49 1.13%Sand-Slime Tailin 0.059 119.0 0.62 0.19 0.43 1 1.63 28.640 398.09 33.36 39 1.17% 2.3 ### 1.20 0.00 1.20 0 0.94 0.06 0.98 1.0 0.053 42.00 75.36 0.106 2.00 0.95 0.33 0.80 0.80 1.15 1.0 0.036 1.87 62.34 0.103 4.89 3.45 2 6.76 460 1.8E-03 3.9E+02 3.0E-04 10 0.213 7500 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 2.03% 0.0033
11.647 5599.17 21.4 0.168 21.3 8.2 3.53 0.79%Sand-Slime Tailin 0.059 119.0 0.63 0.19 0.44 1 1.59 33.858 470.62 39.42 48 0.81% 2.1 ### 1.21 0.00 1.21 0 0.94 0.06 0.98 1.0 0.053 44.13 83.54 0.118 2.21 0.95 0.36 0.80 0.80 1.15 1.0 0.036 1.49 58.73 0.099 4.67 3.44 2 6.81 460 1.8E-03 3.9E+02 3.0E-04 10 0.213 7475 0.08% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 2.06% 0.0034
11.811 5599.01 21.3 0.146 21.2 7.4 3.21 0.69%Sand-Slime Tailin 0.059 119.0 0.64 0.20 0.44 1 1.58 33.555 466.42 39.06 47 0.71% 2.1 ### 1.22 0.00 1.22 0 0.94 0.06 0.98 1.0 0.053 44.00 83.06 0.117 2.20 0.95 0.36 0.80 0.80 1.14 1.0 0.037 1.44 56.33 0.097 4.52 3.36 2 6.86 460 1.8E-03 3.9E+02 3.0E-04 10 0.214 7450 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.10% 0.0034
11.975 5598.85 23.0 0.133 23.0 8.9 3.84 0.58%Sand-Slime Tailin 0.059 119.0 0.65 0.20 0.45 1 1.56 35.751 496.95 41.62 50 0.59% 2.0 ### 1.23 0.00 1.23 0 0.94 0.07 0.98 1.0 0.053 44.90 86.52 0.122 2.30 0.95 0.37 0.80 0.80 1.14 1.0 0.037 1.34 55.78 0.096 4.45 3.38 2 6.91 460 1.8E-03 3.9E+02 3.1E-04 10 0.214 7426 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.13% 0.0035
12.139 5598.68 25.0 0.154 24.9 8.9 3.84 0.62%Sand-Slime Tailin 0.059 119.0 0.66 0.21 0.45 1 1.53 38.252 531.70 44.53 54 0.63% 2.0 ### 1.24 0.00 1.24 0 0.94 0.07 0.98 1.0 0.053 45.92 90.44 0.128 2.42 0.95 0.39 0.80 0.80 1.14 1.0 0.037 1.32 58.78 0.099 4.53 3.48 2 6.96 460 1.8E-03 3.9E+02 3.1E-04 10 0.215 7401 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.17% 0.0036
12.303 5598.52 23.3 0.135 23.3 8.9 3.84 0.58%Sand-Slime Tailin 0.059 119.0 0.67 0.21 0.45 1 1.54 35.751 496.94 41.62 50 0.60% 2.0 ### 1.25 0.00 1.25 0 0.94 0.07 0.98 1.0 0.053 44.90 86.52 0.122 2.31 0.95 0.37 0.80 0.80 1.14 1.0 0.037 1.34 55.97 0.096 4.37 3.34 2 7.01 460 1.8E-03 3.9E+02 3.1E-04 10 0.215 7377 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.21% 0.0036
12.467 5598.35 19.3 0.160 19.2 8.9 3.87 0.83%Sand-Slime Tailin 0.059 119.0 0.68 0.22 0.46 1 1.56 29.859 415.03 34.78 40 0.86% 2.2 ### 1.26 0.00 1.26 0 0.93 0.06 0.98 1.0 0.053 42.50 77.28 0.109 2.07 0.95 0.34 0.80 0.80 1.13 1.0 0.037 1.65 57.30 0.097 4.38 3.22 2 7.06 460 1.8E-03 3.9E+02 3.1E-04 10 0.215 7354 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.24% 0.0037
12.631 5598.19 20.3 0.143 20.3 8.0 3.47 0.70%Sand-Slime Tailin 0.059 119.0 0.69 0.22 0.46 1 1.54 31.205 433.74 36.33 42 0.73% 2.1 ### 1.27 0.00 1.27 0 0.93 0.06 0.98 1.0 0.053 43.04 79.37 0.112 2.12 0.95 0.35 0.80 0.80 1.13 1.0 0.037 1.53 55.42 0.096 4.27 3.20 2 7.11 460 1.8E-03 3.9E+02 3.2E-04 10 0.216 7330 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.28% 0.0037
12.795 5598.02 20.0 0.132 19.9 7.5 3.24 0.66%Sand-Slime Tailin 0.059 119.0 0.70 0.23 0.47 1 1.53 30.469 423.52 35.47 41 0.69% 2.1 ### 1.28 0.00 1.28 0 0.93 0.06 0.98 1.0 0.053 42.74 78.21 0.110 2.10 0.95 0.34 0.80 0.80 1.13 1.0 0.037 1.52 54.00 0.095 4.17 3.14 2 7.16 460 1.8E-03 3.9E+02 3.2E-04 10 0.216 7307 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.32% 0.0038
12.959 5597.86 21.7 0.151 21.6 9.5 4.12 0.70%Sand-Slime Tailin 0.059 119.0 0.71 0.23 0.47 1 1.51 32.643 453.73 38.02 44 0.72% 2.1 ### 1.29 0.00 1.29 0 0.93 0.06 0.97 1.0 0.052 43.63 81.65 0.115 2.19 0.94 0.36 0.80 0.80 1.13 1.0 0.037 1.49 56.54 0.097 4.23 3.21 2 7.21 460 1.8E-03 3.9E+02 3.2E-04 10 0.217 7284 0.09% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.35% 0.0039
13.123 5597.70 20.7 0.179 20.6 8.8 3.79 0.87%Sand-Slime Tailin 0.059 119.0 0.72 0.24 0.48 1 1.51 31.051 431.61 36.16 42 0.90% 2.2 ### 1.30 0.00 1.30 0 0.93 0.06 0.97 1.0 0.052 42.98 79.14 0.111 2.13 0.94 0.35 0.80 0.80 1.13 1.0 0.037 1.64 59.39 0.099 4.31 3.22 2 7.26 460 1.8E-03 3.9E+02 3.2E-04 10 0.217 7261 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.39% 0.0039
13.287 5597.53 20.4 0.271 20.3 9.5 4.12 1.33%Sand-Slime Tailin 0.059 119.0 0.72 0.24 0.48 1 1.50 30.438 423.09 35.45 41 1.38% 2.3 ### 1.31 0.00 1.31 0 0.93 0.06 0.97 1.0 0.052 42.74 78.19 0.110 2.11 0.94 0.34 0.80 0.80 1.12 1.0 0.037 1.96 69.60 0.111 4.77 3.44 2 7.31 460 1.8E-03 3.9E+02 3.3E-04 10 0.218 7239 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.43% 0.0040
13.451 5597.37 17.5 0.436 17.4 12.5 5.40 2.49%Sand-Slime Tailin 0.059 119.0 0.73 0.25 0.49 1 1.51 26.315 365.78 30.70 34 2.60% 2.5 ### 1.32 0.00 1.32 0 0.93 0.06 0.97 1.0 0.052 41.07 71.77 0.102 1.95 0.94 0.32 0.80 0.80 1.12 1.0 0.037 2.93 90.06 0.148 6.28 4.12 2 7.36 460 1.8E-03 3.9E+02 3.3E-04 10 0.218 7216 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.46% 0.0040
13.615 5597.20 16.3 0.451 16.2 16.3 7.05 2.77%Slime Tailings 0.057 113.1 0.74 0.25 0.49 1 1.51 24.409 339.29 28.53 32 2.91% 2.6 ### 1.33 0.00 1.33 0 0.93 0.06 0.97 1.0 0.052 40.02 68.55 0.098 1.88 0.94 0.31 0.80 0.80 1.12 1.0 0.037 3.28 93.45 0.156 6.57 4.22 2 7.41 460 1.8E-03 3.7E+02 3.5E-04 16 0.470 5927 0.11% 2.00 0.65 0.03% 0.020 0.34 0.079 0.765 3.00% 0.0049
13.779 5597.04 20.4 0.353 20.2 19.3 8.35 1.73%Sand-Slime Tailin 0.059 119.0 0.75 0.26 0.50 1 1.47 29.819 414.48 34.84 40 1.80% 2.4 ### 1.34 0.00 1.34 0 0.92 0.06 0.97 1.0 0.052 42.52 77.36 0.109 2.10 0.94 0.34 0.80 0.80 1.12 1.0 0.037 2.25 78.36 0.125 5.21 3.65 2 7.46 460 1.8E-03 3.9E+02 3.3E-04 10 0.219 7174 0.09% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.54% 0.0042
13.943 5596.88 25.7 0.379 25.6 13.1 5.68 1.48%Sand-Slime Tailin 0.059 119.0 0.76 0.26 0.50 1 1.44 36.753 510.87 42.82 50 1.52% 2.3 ### 1.35 0.00 1.35 0 0.92 0.07 0.97 1.0 0.052 45.32 88.14 0.124 2.40 0.94 0.38 0.80 0.80 1.11 1.0 0.037 1.83 78.27 0.125 5.16 3.78 2 7.51 460 1.8E-03 3.9E+02 3.4E-04 10 0.219 7152 0.09% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.58% 0.0042
14.107 5596.71 19.0 0.491 19.0 7.7 3.35 2.58%Sand-Slime Tailin 0.059 119.0 0.77 0.27 0.51 1 1.46 27.769 385.99 32.33 36 2.69% 2.5 ### 1.36 0.00 1.36 0 0.92 0.06 0.97 1.0 0.052 41.64 73.98 0.105 2.02 0.94 0.33 0.80 0.80 1.11 1.0 0.037 2.90 93.82 0.157 6.43 4.23 2 7.56 460 1.8E-03 3.9E+02 3.4E-04 10 0.220 7131 0.10% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.61% 0.0043
14.271 5596.55 14.6 0.427 14.6 5.8 2.51 2.92%Slime Tailings 0.057 113.1 0.78 0.27 0.51 1 1.49 21.650 300.93 25.21 27 3.09% 2.7 ### 1.37 0.00 1.37 0 0.92 0.06 0.97 1.0 0.052 38.87 64.07 0.092 1.78 0.94 0.29 0.80 0.80 1.11 1.0 0.037 3.71 93.46 0.156 6.35 4.07 2 7.61 460 1.8E-03 3.7E+02 3.6E-04 16 0.471 5858 0.12% 2.00 0.65 0.03% 0.021 0.34 0.079 0.765 3.16% 0.0052
14.436 5596.38 9.2 0.378 9.2 7.3 3.14 4.11%Slime Tailings 0.057 113.1 0.79 0.28 0.51 1 1.50 13.706 190.52 16.00 16 4.50% 2.9 ### 1.38 0.00 1.38 0 0.92 0.05 0.98 1.0 0.052 35.66 51.66 0.079 1.52 0.94 0.23 0.80 0.80 1.11 1.0 0.037 6.02 96.32 0.163 6.59 4.06 2 7.66 460 1.8E-03 3.7E+02 3.6E-04 16 0.472 5841 0.12% 2.00 0.65 0.03% 0.021 0.34 0.079 0.765 3.20% 0.0052
14.600 5596.22 10.5 0.412 10.2 45.5 19.71 3.91%Slime Tailings 0.057 113.1 0.80 0.28 0.52 1 1.49 15.242 211.87 18.19 19 4.24% 2.9 ### 1.38 0.00 1.38 0 0.92 0.05 0.98 1.0 0.052 36.42 54.62 0.082 1.59 0.94 0.25 0.80 0.80 1.11 1.0 0.037 5.41 98.39 0.169 6.76 4.17 2 7.71 500 1.8E-03 4.4E+02 3.1E-04 16 0.472 5825 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.19% 0.0036
14.764 5596.06 12.3 0.360 12.1 42.1 18.25 2.92%Slime Tailings 0.057 113.1 0.81 0.29 0.52 1 1.48 17.857 248.22 21.19 22 3.12% 2.7 ### 1.39 0.00 1.39 0 0.92 0.05 0.97 1.0 0.052 37.47 58.66 0.086 1.67 0.94 0.27 0.80 0.80 1.11 1.0 0.038 4.23 89.55 0.147 5.84 3.76 2 7.76 500 1.8E-03 4.4E+02 3.1E-04 16 0.472 5809 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.21% 0.0036
14.928 5595.89 11.4 0.381 11.1 52.4 22.72 3.35%Slime Tailings 0.057 113.1 0.82 0.29 0.53 1 1.47 16.259 226.00 19.44 20 3.61% 2.8 ### 1.40 0.00 1.40 0 0.92 0.05 0.97 1.0 0.052 36.86 56.30 0.084 1.63 0.94 0.25 0.80 0.80 1.10 1.0 0.038 4.80 93.41 0.156 6.15 3.89 2 7.81 500 1.8E-03 4.4E+02 3.1E-04 16 0.473 5793 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.24% 0.0037
15.092 5595.73 10.8 0.299 10.3 74.3 32.20 2.78%Slime Tailings 0.057 113.1 0.83 0.30 0.53 1 1.46 15.049 209.18 18.27 19 3.01% 2.8 ### 1.41 0.00 1.41 0 0.91 0.05 0.97 1.0 0.052 36.45 54.71 0.082 1.60 0.94 0.25 0.80 0.80 1.10 1.0 0.038 4.59 83.90 0.135 5.29 3.44 2 7.86 500 1.8E-03 4.4E+02 3.1E-04 16 0.473 5778 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.27% 0.0037
15.256 5595.56 19.3 0.291 19.3 9.6 4.14 1.50%Sand-Slime Tailin 0.059 119.0 0.84 0.30 0.53 1 1.41 27.158 377.49 31.64 35 1.57% 2.4 ### 1.42 0.00 1.42 0 0.91 0.06 0.97 1.0 0.051 41.40 73.04 0.103 2.02 0.94 0.32 0.80 0.80 1.10 1.0 0.038 2.29 72.47 0.115 4.49 3.25 2 7.91 500 1.8E-03 4.6E+02 3.0E-04 10 0.222 6993 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.86% 0.0031
15.420 5595.40 21.0 0.161 20.9 6.0 2.61 0.77%Sand-Slime Tailin 0.059 119.0 0.85 0.31 0.54 1 1.39 29.142 405.07 33.91 37 0.80% 2.2 ### 1.43 0.00 1.43 0 0.91 0.06 0.97 1.0 0.051 42.19 76.10 0.107 2.10 0.94 0.34 0.80 0.80 1.10 1.0 0.038 1.68 56.97 0.097 3.75 2.92 2 7.96 500 1.8E-03 4.6E+02 3.0E-04 10 0.223 6973 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.89% 0.0031
15.584 5595.24 22.2 0.159 22.2 3.5 1.51 0.72%Sand-Slime Tailin 0.059 119.0 0.86 0.31 0.54 1 1.38 30.532 424.40 35.50 39 0.75% 2.2 ### 1.44 0.00 1.44 0 0.91 0.06 0.97 1.0 0.051 42.75 78.25 0.110 2.16 0.94 0.34 0.80 0.80 1.10 1.0 0.038 1.60 56.82 0.097 3.71 2.94 2 8.01 500 1.8E-03 4.6E+02 3.0E-04 10 0.223 6953 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.92% 0.0032
15.748 5595.07 20.4 0.160 20.4 2.7 1.19 0.78%Sand-Slime Tailin 0.059 119.0 0.87 0.32 0.55 1 1.38 28.088 390.43 32.65 36 0.82% 2.2 ### 1.45 0.00 1.45 0 0.91 0.06 0.97 1.0 0.051 41.75 74.40 0.105 2.07 0.94 0.33 0.80 0.80 1.09 1.0 0.038 1.74 56.81 0.097 3.68 2.87 2 8.06 500 1.8E-03 4.6E+02 3.1E-04 10 0.223 6934 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.95% 0.0032
15.912 5594.91 19.5 0.171 19.4 8.7 3.77 0.88%Sand-Slime Tailin 0.059 119.0 0.88 0.32 0.55 1 1.38 26.698 371.11 31.10 34 0.92% 2.3 ### 1.46 0.00 1.46 0 0.91 0.06 0.97 1.0 0.051 41.21 72.30 0.102 2.02 0.94 0.32 0.80 0.80 1.09 1.0 0.038 1.87 58.26 0.098 3.70 2.86 2 8.11 500 1.8E-03 4.6E+02 3.1E-04 10 0.224 6915 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.98% 0.0032
16.076 5594.74 19.6 0.146 19.5 14.0 6.06 0.74%Sand-Slime Tailin 0.059 119.0 0.89 0.33 0.56 1 1.37 26.712 371.29 31.16 34 0.78% 2.2 ### 1.47 0.00 1.47 0 0.91 0.06 0.97 1.0 0.051 41.23 72.39 0.103 2.02 0.94 0.32 0.80 0.80 1.09 1.0 0.038 1.77 55.11 0.096 3.57 2.79 2 8.16 500 1.8E-03 4.6E+02 3.1E-04 10 0.224 6896 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 2.00% 0.0033
16.240 5594.58 22.3 0.122 22.2 15.7 6.79 0.55%Sand-Slime Tailin 0.059 119.0 0.90 0.33 0.56 1 1.35 29.952 416.34 34.94 38 0.57% 2.1 ### 1.48 0.00 1.48 0 0.91 0.06 0.97 1.0 0.051 42.56 77.50 0.109 2.16 0.94 0.34 0.80 0.80 1.09 1.0 0.038 1.50 52.57 0.094 3.46 2.81 2 8.21 500 1.8E-03 4.6E+02 3.1E-04 10 0.224 6877 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 2.03% 0.0033
16.404 5594.42 25.7 0.298 25.6 17.8 7.69 1.16%Sand-Slime Tailin 0.059 119.0 0.91 0.34 0.57 1 1.33 34.002 472.62 39.66 44 1.20% 2.2 ### 1.49 0.00 1.49 0 0.90 0.06 0.96 1.0 0.050 44.21 83.87 0.118 2.34 0.94 0.36 0.80 0.80 1.09 1.0 0.038 1.78 70.65 0.113 4.15 3.24 2 8.26 500 1.8E-03 4.6E+02 3.1E-04 10 0.225 6858 0.08% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 2.06% 0.0034
16.568 5594.25 18.5 0.396 18.4 22.8 9.87 2.14%Sand-Slime Tailin 0.059 119.0 0.92 0.34 0.57 1 1.35 24.813 344.89 29.04 31 2.25% 2.5 ### 1.50 0.00 1.50 0 0.90 0.06 0.97 1.0 0.051 40.49 69.53 0.099 1.96 0.94 0.31 0.80 0.80 1.09 1.0 0.038 2.92 84.80 0.137 4.99 3.47 2 8.31 500 1.8E-03 4.6E+02 3.2E-04 10 0.225 6839 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.09% 0.0034
16.732 5594.09 15.3 0.462 15.1 35.8 15.50 3.02%Slime Tailings 0.057 113.1 0.93 0.35 0.58 1 1.36 20.475 284.61 24.13 25 3.21% 2.7 ### 1.51 0.00 1.51 0 0.90 0.06 0.97 1.0 0.051 38.49 62.62 0.091 1.80 0.94 0.28 0.80 0.80 1.08 1.0 0.038 3.98 96.07 0.162 5.88 3.84 2 8.36 500 1.8E-03 4.4E+02 3.4E-04 16 0.477 5622 0.09% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.56% 0.0042
16.896 5593.92 15.4 0.350 14.9 88.5 38.34 2.27%Sand-Slime Tailin 0.059 119.0 0.94 0.35 0.58 1 1.35 20.091 279.26 24.20 25 2.41% 2.6 ### 1.52 0.00 1.52 0 0.90 0.06 0.97 1.0 0.050 38.79 62.99 0.091 1.81 0.94 0.28 0.80 0.80 1.08 1.0 0.038 3.45 83.47 0.134 4.82 3.31 2 8.41 500 1.8E-03 4.6E+02 3.2E-04 10 0.226 6804 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.15% 0.0035
17.060 5593.76 26.3 0.276 25.8 72.4 31.36 1.05%Sand-Slime Tailin 0.059 119.0 0.95 0.36 0.59 1 1.30 33.545 466.27 39.64 43 1.09% 2.2 ### 1.53 0.00 1.53 0 0.90 0.06 0.96 1.0 0.050 44.20 83.85 0.118 2.36 0.94 0.36 0.80 0.80 1.08 1.0 0.038 1.73 68.48 0.110 3.92 3.14 2 8.46 500 1.8E-03 4.6E+02 3.2E-04 10 0.226 6786 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.17% 0.0036
17.224 5593.60 20.8 0.402 20.7 18.6 8.07 1.93%Sand-Slime Tailin 0.059 119.0 0.96 0.37 0.59 1 1.31 27.153 377.43 31.71 34 2.02% 2.5 ### 1.54 0.00 1.54 0 0.90 0.06 0.97 1.0 0.050 41.42 73.14 0.104 2.07 0.93 0.33 0.80 0.80 1.08 1.0 0.038 2.62 83.22 0.134 4.73 3.40 2 8.51 500 1.8E-03 4.6E+02 3.2E-04 10 0.227 6768 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.20% 0.0036
17.388 5593.43 15.3 0.334 15.2 21.0 9.11 2.19%Sand-Slime Tailin 0.059 119.0 0.96 0.37 0.59 1 1.33 20.107 279.49 23.56 24 2.33% 2.6 ### 1.55 0.00 1.55 0 0.90 0.05 0.97 1.0 0.050 38.56 62.12 0.090 1.80 0.93 0.28 0.80 0.80 1.08 1.0 0.038 3.47 81.83 0.131 4.60 3.20 2 8.56 500 1.8E-03 4.6E+02 3.3E-04 10 0.227 6750 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.23% 0.0037
17.552 5593.27 16.5 0.162 16.3 36.5 15.82 0.98%Sand-Slime Tailin 0.059 119.0 0.97 0.38 0.60 1 1.31 21.424 297.79 25.23 26 1.04% 2.4 ### 1.56 0.00 1.56 0 0.90 0.06 0.97 1.0 0.050 39.15 64.38 0.093 1.85 0.93 0.29 0.80 0.80 1.08 1.0 0.038 2.31 58.30 0.098 3.43 2.64 2 8.61 500 1.8E-03 4.6E+02 3.3E-04 10 0.227 6733 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.26% 0.0037
17.716 5593.10 24.5 0.248 24.3 32.1 13.91 1.01%Sand-Slime Tailin 0.059 119.0 0.98 0.38 0.60 1 1.28 31.128 432.68 36.45 39 1.05% 2.3 ### 1.57 0.00 1.57 0 0.89 0.06 0.96 1.0 0.050 43.09 79.54 0.112 2.25 0.93 0.35 0.80 0.80 1.07 1.0 0.038 1.81 65.83 0.107 3.69 2.97 2 8.66 500 1.8E-03 4.6E+02 3.3E-04 10 0.228 6715 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.29% 0.0038
17.880 5592.94 17.1 0.328 16.9 29.7 12.85 1.92%Sand-Slime Tailin 0.059 119.0 0.99 0.39 0.61 1 1.30 21.982 305.54 25.81 27 2.03% 2.6 ### 1.58 0.00 1.58 0 0.89 0.06 0.97 1.0 0.050 39.35 65.16 0.094 1.88 0.93 0.29 0.80 0.80 1.07 1.0 0.038 3.06 78.92 0.126 4.32 3.10 2 8.71 500 1.8E-03 4.6E+02 3.3E-04 10 0.228 6698 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.32% 0.0038
18.044 5592.78 15.0 0.452 14.8 43.2 18.70 3.01%Slime Tailings 0.057 113.1 1.00 0.39 0.61 1 1.30 19.195 266.82 22.70 23 3.22% 2.7 ### 1.59 0.00 1.59 0 0.89 0.05 0.97 1.0 0.050 37.99 60.69 0.089 1.78 0.93 0.28 0.80 0.80 1.07 1.0 0.038 4.20 95.31 0.161 5.48 3.63 2 8.76 500 1.8E-03 4.4E+02 3.5E-04 16 0.480 5507 0.10% 2.00 0.65 0.03% 0.018 0.34 0.079 0.765 2.80% 0.0046
18.208 5592.61 12.2 0.284 11.8 60.5 26.21 2.32%Slime Tailings 0.057 113.1 1.01 0.40 0.62 1 1.30 15.367 213.60 18.42 18 2.53% 2.7 ### 1.60 0.00 1.60 0 0.89 0.05 0.97 1.0 0.050 36.50 54.92 0.082 1.65 0.93 0.25 0.80 0.80 1.07 1.0 0.038 4.32 79.57 0.127 4.31 2.98 2 8.81 500 1.8E-03 4.4E+02 3.5E-04 16 0.480 5494 0.10% 2.00 0.65 0.03% 0.019 0.34 0.079 0.765 2.83% 0.0046
P = γeff*(Gef
f/Gmax)
(tsf)
Volumetric Strain for
Design Event, εv (%)
Incremental
Consolidation (ft)
CN
Volumetric Strain for
Design Event, εv (%)
Incremental
Consolidation (ft)
TOTAL SEISMIC SETTLEMENT (FT):
Midpoint
Depth at t1, z1
Shear Wave
Velocity, Vs
Soil
Density, ρ (tcf) b
Threshhold Shear
Strain, γtv (%)
Volumetri
c Strain at
15 Cycles, εc-Rc
Plasticity
Index, PI g1 g2
Shear
Strain, γ (%)a
Stress at Bottom
of Layer (tsf)
Stress at Midpoint
of Layer (tsf)FINAL COVER
Erosion Protection Layer
Water Storage/Rooting Zone Layer
qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Equil Pore Pressure at
Midpoint of Layer (tsf)
Max Shear
Strain
Modulus, Gmax (tsf)
Unit
Weight (tcf)
Unit
Weight (pcf)
Stress at Bottom
of Layer (tsf)
Stress at Midpoint
of Layer (tsf)
Pore Pressure
at Bottom of Layer
Cyclic Resistance Ratio
FoS
Cyclic Stress Ratio
FoS
∆qc1n qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Threshhold Shear
Strain, γtv (%)
Volumetri
c Strain at
15 Cycles, εc-RcCNg1g2
Shear
Strain, γ ab
Seismic Settlement Analysis - Stewart et al (2004)
Shear
Wave
Velocity, Vs
High Compaction LayerPlatform/Random Fill Layer
Pw (u2)Pw (u2)
2013 CPT Data from ConeTec CPT Data Interpretations
fs/qt
Material
Type (as
determined by fines
Unit Weight Unit Weight
Total Stress
at time of
Depth
at time of CPT Elevation qt fs qc
Effective Stress at
time of CPT
Saturated
at time of CPT
Type Index,
Ic FC
Youd, et al (2001)Max. Horiz. Acceleration, Amax/g: 0.15
Earthquake Moment Magnitude, M:
Idriss and Boulanger (2008)
Max. Horiz. Acceleration, Amax/g:
Earthquake Moment Magnitude, M:
Magnitude Scaling Factor, MSF:
WHITE MESA TAILINGS REPOSITORY LIQUEFACTION AND SEISMIC SETTLEMENT ANALYSES - 3-2C Elev. at Top of
Layer (ft)
Elev. At Midpoint
of Layer (ft)
Bottom of
Layer (ft)
Thickne
ss of Layer (ft)
5.5
Magnitude Scaling Factor, MSF:
Equil Pore
Pressure at time of
Conditions at t1 Liquefaction Triggering AnalysesEquil Pore
Pressure at t1CN qc1 qc1 qc1N
Normalized Cone Penetration ResistanceQ
Normalized Friction Ratio, Fr (%)
Total Stress at t1 Liquefiable?1=Yes2=No
Cyclic Stress RatioEffective
Stress at t1
Saturated at t1
Idriss & Boulanger (2008)
CSR
M=7.5,
s'v=1atm
Kc
Scaling Factor for stress ration, rm
Volumetric Strain Ratio for Site-Specific Design Eart
Equiv. Number of Uniform Strain Cycles, N
Youd et al. (2001)
CSR
M=7.5,
s'v=1atm
Depth at t1, z1
Soil
Density, ρ
Maximum
Shear Strain Modulus,
Gmax
P = γeff*(Gef
f/Gmax)
Plasticity
Index, PI
Liquef_SeismicSettle_30Aug2015.xls Page 20 of 29
Energy Fuels Resources (USA) Inc.White Mesa Mill
Seismic Settlement Analyses
Data File: 13-52106_SP3-2C-BSC-CPT 5605.30 Water surface elevation during CPT investigation (ft5610.82 Ground Surface Elevation at time of CPT (ft amsl)
Location: White Mesa 2013 CPT Investigation 0.15 5602.54 Water surface elevation at t0 (ft amsl)5621.51 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl)
..\..\..\6.2.3 Field Data\2013 Field Investigation\Conetec Dat 5.5 5591.64 Water surface elevation at t1 (ft amsl)0.50 Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after plac ###### 5621.26 5621.01 0.50 0.055 110 0.028 0.014 0.00 0.00 0.028 0.014 0.08 508 1.7E-03 4.4E+02 3.0E-06 11 0.068 46696 0.00% 1.20 0.80 0.04% 0.000 0.32 0.133 0.778 0.00% 0.0000
Tailings Sands 1.69 5586.64 Water surface elevation at t2 (ft amsl)3.50 Thickness of Water Storage/Rooting Zone (ft) ###### 5619.26 5617.51 3.50 0.054 107 0.215 0.121 0.00 0.00 0.215 0.121 0.69 508 1.7E-03 4.3E+02 2.8E-05 11 0.118 18930 0.00% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
Tailings Sand-Slimes 3.50 Thickness of High Compaction Layer (ft)###### 5615.76 5614.01 3.50 0.060 120 0.424 0.320 0.00 0.00 0.424 0.320 1.75 508 1.9E-03 4.8E+02 6.5E-05 11 0.152 12657 0.01% 0.65 0.75 0.02% 0.000 0.34 0.079 0.765 0.00% 0.0000Tailings Slimes 1.44 3.19 Thickness of Random/Platform Fill on on top of existing interim cover (ft) ###### 5612.42 5610.82 3.19 0.050 101 0.585 0.504 0.00 0.00 0.585 0.504 2.77 508 1.6E-03 4.0E+02 1.2E-04 11 0.170 10470 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
Interim Cover 0.47 1167.12 Additional Stress due to Final Cover Placement, ΔσFC (psf)
Cells Requiring User Input/Manipulation 2.21 2.21 7.51 5586.64 Elevation of bottom of tailings (liner) (ft amsl)
0.397
rd Cσ Kσ Ka rd Dr f f Kσ Ka Avg
(ft) (ft amsl) TSF TSF TSF (ft) PSI (%) (tcf) (pcf) (tsf)(tsf)(tsf) 1=Yes TSF MPa % (tsf)(tsf)(tsf) 1=Yes FoS m
0=No 0=No (ft/sec) (tcf) tsf tsf (%)
P = γeff*(Gef
f/Gmax)
(tsf)
Volumetric Strain for
Design Event, εv (%)
Incremental
Consolidation (ft)
CN
Volumetric Strain for
Design Event, εv (%)
Incremental
Consolidation (ft)
TOTAL SEISMIC SETTLEMENT (FT):
Midpoint
Depth at t1, z1
Shear Wave
Velocity, Vs
Soil
Density, ρ (tcf) b
Threshhold Shear
Strain, γtv (%)
Volumetri
c Strain at
15 Cycles, εc-Rc
Plasticity
Index, PI g1 g2
Shear
Strain, γ (%)a
Stress at Bottom
of Layer (tsf)
Stress at Midpoint
of Layer (tsf)FINAL COVER
Erosion Protection Layer
Water Storage/Rooting Zone Layer
qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Equil Pore Pressure at
Midpoint of Layer (tsf)
Max Shear
Strain
Modulus, Gmax (tsf)
Unit
Weight (tcf)
Unit
Weight (pcf)
Stress at Bottom
of Layer (tsf)
Stress at Midpoint
of Layer (tsf)
Pore Pressure
at Bottom of Layer
Cyclic Resistance Ratio
FoS
Cyclic Stress Ratio
FoS
∆qc1n qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Threshhold Shear
Strain, γtv (%)
Volumetri
c Strain at
15 Cycles, εc-RcCNg1g2
Shear
Strain, γ ab
Seismic Settlement Analysis - Stewart et al (2004)
Shear
Wave
Velocity, Vs
High Compaction LayerPlatform/Random Fill Layer
Pw (u2)Pw (u2)
2013 CPT Data from ConeTec CPT Data Interpretations
fs/qt
Material
Type (as
determined by fines
Unit Weight Unit Weight
Total Stress
at time of
Depth
at time of CPT Elevation qt fs qc
Effective Stress at
time of CPT
Saturated
at time of CPT
Type Index,
Ic FC
Youd, et al (2001)Max. Horiz. Acceleration, Amax/g: 0.15
Earthquake Moment Magnitude, M:
Idriss and Boulanger (2008)
Max. Horiz. Acceleration, Amax/g:
Earthquake Moment Magnitude, M:
Magnitude Scaling Factor, MSF:
WHITE MESA TAILINGS REPOSITORY LIQUEFACTION AND SEISMIC SETTLEMENT ANALYSES - 3-2C Elev. at Top of
Layer (ft)
Elev. At Midpoint
of Layer (ft)
Bottom of
Layer (ft)
Thickne
ss of Layer (ft)
5.5
Magnitude Scaling Factor, MSF:
Equil Pore
Pressure at time of
Conditions at t1 Liquefaction Triggering AnalysesEquil Pore
Pressure at t1CN qc1 qc1 qc1N
Normalized Cone Penetration ResistanceQ
Normalized Friction Ratio, Fr (%)
Total Stress at t1 Liquefiable?1=Yes2=No
Cyclic Stress RatioEffective
Stress at t1
Saturated at t1
Idriss & Boulanger (2008)
CSR
M=7.5,
s'v=1atm
Kc
Scaling Factor for stress ration, rm
Volumetric Strain Ratio for Site-Specific Design Eart
Equiv. Number of Uniform Strain Cycles, N
Youd et al. (2001)
CSR
M=7.5,
s'v=1atm
Depth at t1, z1
Soil
Density, ρ
Maximum
Shear Strain Modulus,
Gmax
P = γeff*(Gef
f/Gmax)
Plasticity
Index, PI
18.372 5592.45 20.9 0.383 20.4 78.0 33.81 1.83%Sand-Slime Tailin 0.059 119.0 1.02 0.40 0.62 1 1.27 25.871 359.60 30.76 32 1.92% 2.5 ### 1.61 0.00 1.61 0 0.89 0.06 0.96 1.0 0.050 41.09 71.85 0.102 2.06 0.93 0.32 0.80 0.80 1.07 1.0 0.039 2.64 81.26 0.130 4.38 3.22 2 8.86 500 1.8E-03 4.6E+02 3.4E-04 10 0.229 6649 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.40% 0.0039
18.537 5592.28 18.1 0.296 17.9 41.0 17.77 1.63%Sand-Slime Tailin 0.059 119.0 1.03 0.41 0.63 1 1.27 22.684 315.30 26.72 27 1.73% 2.5 ### 1.62 0.00 1.62 0 0.89 0.06 0.96 1.0 0.049 39.67 66.40 0.095 1.92 0.93 0.30 0.80 0.80 1.07 1.0 0.039 2.78 74.25 0.118 3.95 2.94 2 8.91 500 1.8E-03 4.6E+02 3.4E-04 10 0.230 6632 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.43% 0.0040
18.701 5592.12 21.8 0.387 21.4 62.7 27.18 1.78%Sand-Slime Tailin 0.059 119.0 1.04 0.41 0.63 1 1.25 26.759 371.95 31.65 33 1.87% 2.5 ### 1.63 0.00 1.63 0 0.89 0.06 0.96 1.0 0.049 41.40 73.05 0.103 2.10 0.93 0.32 0.80 0.80 1.06 1.0 0.039 2.56 81.00 0.129 4.30 3.20 2 8.96 500 1.8E-03 4.6E+02 3.4E-04 10 0.230 6616 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.46% 0.0040
18.865 5591.96 18.8 0.412 18.5 46.5 20.15 2.19%Sand-Slime Tailin 0.059 119.0 1.05 0.42 0.64 1 1.25 23.212 322.65 27.38 28 2.32% 2.6 ### 1.64 0.00 1.64 0 0.89 0.06 0.96 1.0 0.049 39.90 67.29 0.096 1.95 0.93 0.30 0.80 0.80 1.06 1.0 0.039 3.15 86.26 0.140 4.61 3.28 2 9.01 500 1.8E-03 4.6E+02 3.5E-04 10 0.230 6599 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.49% 0.0041
19.029 5591.79 18.5 0.428 18.4 22.2 9.62 2.31%Sand-Slime Tailin 0.059 119.0 1.06 0.42 0.64 1 1.25 22.958 319.11 26.86 27 2.45% 2.6 ### 1.65 0.00 1.65 0 0.88 0.06 0.96 1.0 0.049 39.72 66.59 0.095 1.94 0.93 0.30 0.80 0.80 1.06 1.0 0.039 3.28 88.21 0.144 4.72 3.33 2 9.06 500 1.8E-03 4.6E+02 3.5E-04 10 0.231 6583 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.52% 0.0041
19.193 5591.63 13.1 0.382 12.9 32.2 13.96 2.91%Slime Tailings 0.057 113.1 1.07 0.43 0.64 1 1.25 16.221 225.48 19.13 19 3.17% 2.8 ### 1.65 0.00 1.65 1 0.88 0.05 0.97 1.0 0.049 36.75 55.88 0.083 1.69 0.93 0.25 0.80 0.80 1.06 1.0 0.039 4.71 90.11 0.148 4.82 3.26 2 9.11 500 1.8E-03 4.4E+02 3.7E-04 16 0.482 5415 0.11% 2.00 0.65 0.03% 0.020 0.34 0.079 0.765 3.02% 0.0050
19.357 5591.46 11.8 0.318 11.1 110.7 47.96 2.70%Slime Tailings 0.057 113.1 1.08 0.43 0.65 1 1.25 13.843 192.42 17.08 17 2.97% 2.8 ### 1.66 0.01 1.66 1 0.88 0.05 0.97 1.0 0.049 36.04 53.12 0.081 1.63 0.93 0.24 0.80 0.80 1.06 1.0 0.039 4.94 84.32 0.136 4.38 3.01 2 9.16 500 1.8E-03 4.4E+02 3.7E-04 16 0.482 5409 0.11% 2.00 0.65 0.03% 0.020 0.34 0.079 0.765 3.05% 0.0050
19.521 5591.30 14.0 0.235 13.6 73.8 31.99 1.67%Sand-Slime Tailin 0.059 119.0 1.09 0.44 0.65 1 1.24 16.857 234.31 20.24 20 1.81% 2.6 ### 1.67 0.01 1.66 1 0.88 0.05 0.97 1.0 0.049 37.40 57.64 0.085 1.73 0.93 0.26 0.80 0.80 1.06 1.0 0.039 3.50 70.92 0.113 3.62 2.67 2 9.21 500 1.8E-03 4.6E+02 3.5E-04 10 0.231 6554 0.10% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.62% 0.0043
19.685 5591.14 14.0 0.240 13.3 116.1 50.29 1.72%Sand-Slime Tailin 0.059 119.0 1.10 0.44 0.66 1 1.23 16.369 227.53 20.05 20 1.86% 2.6 ### 1.68 0.02 1.67 1 0.88 0.05 0.97 1.0 0.050 37.33 57.38 0.085 1.72 0.93 0.26 0.80 0.80 1.06 1.0 0.039 3.57 71.65 0.114 3.62 2.67 2 9.26 538 1.8E-03 5.3E+02 3.1E-04 10 0.231 6546 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.83% 0.0030
19.849 5590.97 13.0 0.220 12.4 100.8 43.68 1.69%Sand-Slime Tailin 0.059 119.0 1.11 0.45 0.66 1 1.23 15.187 211.09 18.54 18 1.85% 2.7 ### 1.69 0.02 1.67 1 0.88 0.05 0.97 1.0 0.050 36.80 55.34 0.083 1.67 0.93 0.25 0.80 0.80 1.05 1.0 0.039 3.77 69.95 0.112 3.52 2.59 2 9.31 538 1.8E-03 5.3E+02 3.1E-04 10 0.232 6539 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.85% 0.0030
20.013 5590.81 12.6 0.337 11.7 147.5 63.92 2.68%Slime Tailings 0.057 113.1 1.12 0.45 0.67 1 1.22 14.257 198.18 17.87 17 2.94% 2.8 ### 1.70 0.03 1.68 1 0.88 0.05 0.97 1.0 0.050 36.31 54.17 0.082 1.64 0.92 0.24 0.80 0.80 1.05 1.0 0.039 4.79 85.49 0.138 4.31 2.98 2 9.36 538 1.8E-03 5.1E+02 3.3E-04 16 0.483 5385 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.29% 0.0038
20.177 5590.64 16.5 0.337 15.6 147.0 63.70 2.05%Sand-Slime Tailin 0.059 119.0 1.13 0.46 0.67 1 1.21 18.838 261.85 23.17 23 2.20% 2.6 ### 1.71 0.03 1.68 1 0.87 0.05 0.96 1.0 0.050 38.43 61.60 0.090 1.81 0.92 0.28 0.80 0.80 1.05 1.0 0.039 3.49 80.79 0.129 4.00 2.90 2 9.41 538 1.8E-03 5.3E+02 3.1E-04 10 0.232 6524 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.90% 0.0031
20.341 5590.48 20.1 0.337 19.5 94.3 40.85 1.68%Sand-Slime Tailin 0.059 119.0 1.14 0.46 0.68 1 1.20 23.344 324.48 27.93 28 1.78% 2.5 ### 1.72 0.04 1.69 1 0.87 0.06 0.96 1.0 0.050 40.10 68.03 0.097 1.96 0.92 0.31 0.80 0.80 1.05 1.0 0.040 2.77 77.23 0.123 3.77 2.87 2 9.46 538 1.8E-03 5.3E+02 3.1E-04 10 0.232 6517 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.93% 0.0032
24.180 5586.64 Sand-Slime Tailin 0.059 119.0 1.95 0.10 1.85 1 10.63 538 1.8E-03 5.3E+02 3.6E-04 10 0.238 6265 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.52% 0.0966
Extra layer added to analyze seismic settlement of tailings below the bottom of CPT investigation.
Liquef_SeismicSettle_30Aug2015.xls Page 21 of 29
Energy Fuels Resources (USA) Inc.White Mesa Mill
Seismic Settlement Analyses
Data File: 13-52106_SP3-3S-BSC-CPT 5605.60 Water surface elevation during CPT investigation (ft 5609.63 Ground Surface Elevation at time of CPT (ft amsl)
Location: White Mesa 2013 CPT Investigation 0.15 5601.35 Water surface elevation at t0 (ft amsl)5620.49 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl)
..\..\..\6.2.3 Field Data\2013 Field Investigation\Conetec Data 5.5 5582.14 Water surface elevation at t1 (ft amsl) 0.50 Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after pla ###### 5620.24 5619.99 0.50 0.055 110 0.028 0.014 0.00 0.00 0.028 0.014 0.08 508 1.7E-03 4.4E+02 3.0E-06 11 0.068 46696 0.00% 1.20 0.80 0.04% 0.000 0.32 0.133 0.778 0.00% 0.0000
Tailings Sands 1.69 5577.14 Water surface elevation at t2 (ft amsl)3.50 Thickness of Water Storage/Rooting Zone (ft)###### 5618.24 5616.49 3.50 0.054 107 0.215 0.121 0.00 0.00 0.215 0.121 0.69 508 1.7E-03 4.3E+02 2.8E-05 11 0.118 18930 0.00% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
Tailings Sand-Slimes 3.50 Thickness of High Compaction Layer (ft)###### 5614.74 5612.99 3.50 0.060 120 0.424 0.320 0.00 0.00 0.424 0.320 1.75 508 1.9E-03 4.8E+02 6.5E-05 11 0.152 12657 0.01% 0.65 0.75 0.02% 0.000 0.34 0.079 0.765 0.00% 0.0000
Tailings Slimes 1.44 3.36 Thickness of Random/Platform Fill on on top of existing interim cover (ft) ###### 5611.31 5609.63 3.36 0.050 101 0.593 0.509 0.00 0.00 0.593 0.509 2.80 508 1.6E-03 4.0E+02 1.2E-04 11 0.171 10433 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
Interim Cover 0.47 1184.24 Additional Stress due to Final Cover Placement, ΔσFC (psf)
Cells Requiring User Input/Manipulation 2.21 2.21 7.51 5577.14 Elevation of bottom of tailings (liner) (ft amsl)
0.414
rd Cσ Kσ Ka rd Dr f Kσ Ka Avg
(ft) (ft amsl) TSF TSF TSF (ft) PSI (%) (tcf) (pcf) (tsf)(tsf)(tsf) 1=Yes TSF MPa % (tsf)(tsf)(tsf) 1=Yes FoS m
0=No 0=No (ft/sec) (tcf) tsf tsf (%)
0.164 5609.47 13.9 0.034 13.9 1.5 0.64 0.25%Interim Cover 0.050 100.7 0.01 0.00 0.01 0 1.70 23.545 327.28 27.36 1677 0.25% 0.7 51% 0.60 0.00 0.60 0 1.00 0.06 1.02 1.0 0.059 39.92 67.29 0.096 1.63 0.97 0.30 0.80 2.53 1.0 0.017 1.00 27.36 0.073 176.61 89.12 2 3.36 594 1.6E-03 5.5E+02 1.1E-04 11 0.178 9740 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
0.328 5609.30 18.4 0.072 18.4 2.3 1.01 0.39%Interim Cover 0.050 100.7 0.02 0.00 0.02 0 1.70 31.246 434.32 36.32 1112 0.39% 0.9 51% 0.61 0.00 0.61 0 1.00 0.06 1.02 1.0 0.059 43.07 79.38 0.112 1.89 0.97 0.35 0.80 2.20 1.0 0.019 1.00 36.32 0.080 97.39 49.64 2 3.41 594 1.6E-03 5.5E+02 1.1E-04 11 0.179 9685 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
0.492 5609.14 58.6 0.077 58.5 4.8 2.06 0.13%Interim Cover 0.050 100.7 0.02 0.00 0.02 0 1.70 99.501 1383.06 115.62 2362 0.13% 0.4 51% 0.62 0.00 0.62 0 1.00 0.12 1.04 1.0 0.060 70.90 186.52 0.662 11.01 0.97 0.62 0.69 3.01 1.0 0.014 1.00 115.62 0.224 181.10 96.05 2 3.46 594 1.6E-03 5.5E+02 1.1E-04 11 0.179 9631 0.01%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
0.656 5608.97 73.3 0.296 73.3 3.9 1.68 0.40%Interim Cover 0.050 100.7 0.03 0.00 0.03 0 1.70 124.644 1732.55 144.81 2218 0.40% 0.8 51% 0.63 0.00 0.63 0 1.00 0.15 1.05 1.0 0.061 81.14 225.95 1.000 16.49 0.97 0.69 0.65 3.10 1.0 0.014 1.00 144.81 0.362 220.09 118.29 2 3.51 594 1.6E-03 5.5E+02 1.1E-04 11 0.180 9578 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
0.820 5608.81 81.4 0.267 81.4 3.7 1.62 0.33%Interim Cover 0.050 100.7 0.04 0.00 0.04 0 1.70 138.414 1923.95 160.81 1971 0.33% 0.8 51% 0.63 0.00 0.63 0 1.00 0.18 1.05 1.0 0.061 86.75 247.56 1.000 16.41 0.97 0.73 0.63 3.04 1.0 0.014 1.00 160.81 1.000 486.00 251.21 2 3.56 594 1.6E-03 5.5E+02 1.1E-04 11 0.181 9526 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
0.984 5608.65 84.2 0.326 84.2 3.9 1.68 0.39%Interim Cover 0.050 100.7 0.05 0.00 0.05 0 1.70 143.072 1988.70 166.22 1697 0.39% 0.8 51% 0.64 0.00 0.64 0 1.00 0.19 1.05 1.0 0.061 88.65 254.87 1.000 16.41 0.97 0.74 0.63 2.89 1.0 0.015 1.00 166.22 1.000 405.16 210.78 2 3.61 594 1.6E-03 5.5E+02 1.1E-04 11 0.181 9475 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.148 5608.48 84.7 0.187 84.7 2.9 1.27 0.22%Interim Cover 0.050 100.7 0.06 0.00 0.06 0 1.70 143.939 2000.75 167.21 1463 0.22% 0.6 51% 0.65 0.00 0.65 0 1.00 0.19 1.05 1.0 0.061 89.00 256.21 1.000 16.43 0.97 0.75 0.63 2.74 1.0 0.016 1.00 167.21 1.000 347.42 181.93 2 3.66 594 1.6E-03 5.5E+02 1.1E-04 11 0.182 9425 0.01% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.312 5608.32 73.0 0.231 72.9 3.0 1.31 0.32%Interim Cover 0.050 100.7 0.07 0.00 0.07 0 1.70 123.998 1723.57 144.05 1103 0.32% 0.8 51% 0.66 0.00 0.66 0 1.00 0.15 1.04 1.0 0.060 80.87 224.93 1.000 16.62 0.97 0.69 0.65 2.43 1.0 0.018 1.00 144.05 0.358 108.87 62.75 2 3.71 594 1.6E-03 5.5E+02 1.2E-04 11 0.182 9375 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.476 5608.15 71.2 0.308 71.2 1.7 0.72 0.43%Interim Cover 0.050 100.7 0.07 0.00 0.07 0 1.70 120.955 1681.27 140.50 956 0.43% 1.0 51% 0.67 0.00 0.67 0 1.00 0.15 1.04 1.0 0.060 79.63 220.13 1.000 16.67 0.97 0.68 0.66 2.31 1.0 0.019 1.00 140.50 0.338 91.39 54.03 2 3.76 594 1.6E-03 5.5E+02 1.2E-04 11 0.183 9327 0.02%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.640 5607.99 55.2 0.236 55.2 3.7 1.59 0.43%Interim Cover 0.050 100.7 0.08 0.00 0.08 0 1.70 93.772 1303.43 108.96 667 0.43% 1.1 51% 0.67 0.00 0.67 0 1.00 0.11 1.03 1.0 0.059 68.56 177.51 0.498 8.38 0.97 0.60 0.70 2.03 1.0 0.021 1.00 108.96 0.200 48.77 28.57 2 3.81 594 1.6E-03 5.5E+02 1.2E-04 11 0.184 9279 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.804 5607.83 55.4 0.150 55.4 1.9 0.82 0.27%Interim Cover 0.050 100.7 0.09 0.00 0.09 0 1.70 94.095 1307.92 109.31 608 0.27% 0.9 51% 0.68 0.00 0.68 0 1.00 0.11 1.03 1.0 0.059 68.68 177.99 0.505 8.50 0.97 0.60 0.70 1.97 1.0 0.022 1.00 109.31 0.201 44.61 26.56 2 3.86 594 1.6E-03 5.5E+02 1.2E-04 11 0.184 9233 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.968 5607.66 54.7 0.208 54.7 1.6 0.70 0.38%Interim Cover 0.050 100.7 0.10 0.00 0.10 0 1.70 92.905 1291.38 107.92 550 0.38% 1.1 51% 0.69 0.00 0.69 0 1.00 0.11 1.02 1.0 0.059 68.19 176.12 0.478 8.08 0.97 0.60 0.70 1.91 1.0 0.022 1.00 107.92 0.197 39.98 24.03 2 3.91 594 1.6E-03 5.5E+02 1.2E-04 11 0.185 9187 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.133 5607.50 53.2 0.150 53.2 1.9 0.83 0.28%Interim Cover 0.050 100.7 0.11 0.00 0.11 0 1.70 90.491 1257.82 105.12 495 0.28% 1.0 51% 0.70 0.00 0.70 0 1.00 0.11 1.02 1.0 0.059 67.21 172.33 0.432 7.32 0.97 0.59 0.70 1.85 1.0 0.023 1.00 105.12 0.188 35.26 21.29 2 3.96 594 1.6E-03 5.5E+02 1.2E-04 11 0.185 9141 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.297 5607.33 46.8 0.504 46.8 2.3 1.01 1.08%Interim Cover 0.050 100.7 0.12 0.00 0.12 0 1.70 79.560 1105.88 92.43 404 1.08% 1.5 51% 0.71 0.00 0.71 0 1.00 0.10 1.02 1.0 0.059 62.76 155.19 0.297 5.06 0.97 0.56 0.72 1.75 1.0 0.024 1.00 92.43 0.153 26.73 15.89 2 4.01 594 1.6E-03 5.5E+02 1.3E-04 11 0.186 9097 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.461 5607.17 59.1 1.594 59.1 3.4 1.48 2.70%Interim Cover 0.050 100.7 0.12 0.00 0.12 0 1.70 100.470 1396.53 116.73 476 2.70% 1.8 51% 0.72 0.00 0.72 0 1.00 0.12 1.02 1.0 0.059 71.29 188.02 0.698 11.85 0.97 0.62 0.69 1.83 1.0 0.023 1.13 131.98 0.294 47.78 29.82 2 4.06 594 1.6E-03 5.5E+02 1.3E-04 11 0.186 9053 0.02%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.625 5607.01 70.3 1.024 70.2 6.0 2.59 1.46%Interim Cover 0.050 100.7 0.13 0.00 0.13 0 1.70 119.408 1659.77 138.76 531 1.46% 1.6 51% 0.72 0.00 0.72 0 1.00 0.15 1.03 1.0 0.059 79.02 217.77 1.000 16.95 0.97 0.68 0.66 1.89 1.0 0.023 1.00 138.76 0.328 50.10 33.52 2 4.11 594 1.6E-03 5.5E+02 1.3E-04 11 0.187 9010 0.02%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.789 5606.84 132.5 0.906 132.5 6.2 2.67 0.68%Interim Cover 0.050 100.7 0.14 0.00 0.14 0 1.63 215.362 2993.54 250.20 942 0.68% 1.2 51% 0.73 0.00 0.73 0 0.99 0.30 1.05 1.0 0.060 ##### 368.33 1.000 16.58 0.97 0.91 0.60 2.07 1.0 0.021 1.00 250.20 1.000 143.62 80.10 2 4.16 594 1.6E-03 5.5E+02 1.3E-04 11 0.187 8968 0.02%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.953 5606.68 69.0 0.500 69.0 1.8 0.78 0.72%Interim Cover 0.050 100.7 0.15 0.00 0.15 0 1.70 117.249 1629.76 136.20 463 0.73% 1.3 51% 0.74 0.00 0.74 0 0.99 0.14 1.02 1.0 0.059 78.12 214.32 1.000 17.04 0.97 0.67 0.66 1.81 1.0 0.024 1.00 136.20 0.315 42.74 29.89 2 4.21 594 1.6E-03 5.5E+02 1.3E-04 11 0.188 8926 0.02%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
3.117 5606.51 83.8 0.682 83.8 0.9 0.37 0.81%Interim Cover 0.050 100.7 0.16 0.00 0.16 0 1.70 142.375 1979.01 165.37 533 0.82% 1.4 51% 0.75 0.00 0.75 0 0.99 0.18 1.03 1.0 0.059 88.35 253.72 1.000 16.98 0.97 0.74 0.63 1.88 1.0 0.023 1.00 165.37 1.000 128.60 72.79 2 4.26 495 1.6E-03 3.8E+02 1.9E-04 11 0.189 8885 0.03%2.00 0.65 0.03% 0.002 0.34 0.079 0.765 0.31% 0.0005
3.281 5606.35 49.0 0.298 49.0 3.9 1.69 0.61%Sand Tailings 0.051 102.8 0.17 0.00 0.17 0 1.70 83.334 1158.34 96.84 296 0.61% 1.4 18% 0.76 0.00 0.76 0 0.99 0.10 1.01 1.0 0.058 46.85 143.68 0.245 4.22 0.97 0.57 0.72 1.60 1.0 0.027 1.00 96.84 0.164 20.08 12.15 2 4.31 495 1.6E-03 3.9E+02 1.9E-04 0 0.193 11435 0.04% 2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.04% 0.0001
3.445 5606.19 47.2 0.382 47.2 0.2 0.09 0.81%Sand Tailings 0.051 102.8 0.17 0.00 0.17 0 1.70 80.172 1114.39 93.12 270 0.81% 1.5 18% 0.77 0.00 0.77 0 0.99 0.10 1.01 1.0 0.058 45.89 139.01 0.229 3.95 0.97 0.56 0.72 1.56 1.0 0.027 1.00 93.12 0.155 18.02 10.99 2 4.36 495 1.6E-03 3.9E+02 1.9E-04 0 0.194 11383 0.04% 2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.04% 0.0001
3.609 5606.02 46.3 0.306 46.3 0.6 0.28 0.66%Sand Tailings 0.051 102.8 0.18 0.00 0.18 0 1.70 78.761 1094.78 91.48 253 0.66% 1.5 18% 0.77 0.00 0.77 0 0.99 0.10 1.01 1.0 0.058 45.48 136.96 0.223 3.85 0.97 0.55 0.72 1.54 1.0 0.028 1.00 91.48 0.151 16.77 10.31 2 4.41 495 1.6E-03 3.9E+02 1.9E-04 0 0.194 11332 0.04% 2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.05% 0.0001
3.773 5605.86 55.3 0.508 55.3 1.0 0.42 0.92%Sand Tailings 0.051 102.8 0.19 0.00 0.19 0 1.70 94.044 1307.21 109.24 289 0.92% 1.6 18% 0.78 0.00 0.78 0 0.99 0.11 1.01 1.0 0.058 50.02 159.25 0.321 5.56 0.97 0.60 0.70 1.58 1.0 0.027 1.00 109.24 0.201 21.33 13.45 2 4.46 495 1.6E-03 3.9E+02 2.0E-04 0 0.195 11282 0.05% 2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.05% 0.0001
3.937 5605.69 80.4 1.013 80.4 1.5 0.64 1.26%Sand Tailings 0.051 102.8 0.20 0.00 0.20 0 1.70 136.731 1900.56 158.82 403 1.26% 1.6 18% 0.79 0.00 0.79 0 0.99 0.17 1.01 1.0 0.058 62.69 221.52 1.000 17.25 0.97 0.73 0.64 1.70 1.0 0.025 1.00 158.82 0.453 45.97 31.61 2 4.51 495 1.6E-03 3.9E+02 2.0E-04 0 0.195 11232 0.05%2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.05% 0.0001
4.101 5605.53 74.3 1.624 74.3 3.7 1.58 2.19%Sand-Slime Tailing 0.059 119.0 0.21 0.00 0.21 1 1.70 126.310 1755.71 146.75 359 2.19% 1.8 47% 0.80 0.00 0.80 0 0.99 0.16 1.01 1.0 0.058 81.77 228.51 1.000 17.32 0.97 0.70 0.65 1.65 1.0 0.026 1.11 163.40 1.000 97.90 57.61 2 4.56 495 1.8E-03 4.5E+02 1.7E-04 10 0.192 8872 0.03%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
4.265 5605.36 52.7 1.775 52.6 12.2 5.30 3.37%Sand-Slime Tailing 0.059 119.0 0.22 0.01 0.21 1 1.70 89.471 1243.65 104.07 248 3.38% 2.1 47% 0.81 0.00 0.81 0 0.99 0.11 1.01 1.0 0.057 66.80 170.86 0.416 7.25 0.96 0.59 0.71 1.51 1.0 0.028 1.38 143.17 0.353 33.80 20.53 2 4.61 495 1.8E-03 4.5E+02 1.7E-04 10 0.193 8827 0.03% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
4.429 5605.20 70.0 1.960 69.6 74.7 32.37 2.80%Sand-Slime Tailing 0.059 119.0 0.23 0.01 0.22 1 1.70 118.286 1644.18 138.30 323 2.81% 1.9 47% 0.82 0.00 0.82 0 0.99 0.14 1.01 1.0 0.057 78.81 217.11 1.000 17.43 0.96 0.68 0.66 1.60 1.0 0.027 1.21 167.80 1.000 93.77 55.60 2 4.66 495 1.8E-03 4.5E+02 1.8E-04 10 0.193 8784 0.03%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
4.593 5605.04 105.7 1.513 105.3 62.4 27.03 1.43%Sand Tailings 0.062 123.5 0.24 0.02 0.22 1 1.58 166.632 2316.18 194.25 477 1.43% 1.6 18% 0.83 0.00 0.83 0 0.98 0.25 1.01 1.0 0.057 71.75 266.00 1.000 17.41 0.96 0.80 0.60 1.72 1.0 0.025 1.00 194.25 1.000 91.68 54.55 2 4.71 495 1.9E-03 4.7E+02 1.7E-04 0 0.197 11011 0.03%2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.01% 0.0000
4.757 5604.87 102.3 1.285 102.2 16.0 6.92 1.26%Sand Tailings 0.062 123.5 0.25 0.02 0.23 1 1.59 162.173 2254.20 188.54 452 1.26% 1.6 18% 0.84 0.00 0.84 0 0.98 0.23 1.01 1.0 0.057 70.29 258.83 1.000 17.48 0.96 0.79 0.60 1.70 1.0 0.025 1.00 188.54 1.000 89.68 53.58 2 4.76 495 1.9E-03 4.7E+02 1.7E-04 0 0.198 10956 0.03%2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.01% 0.0000
4.921 5604.71 80.0 0.626 80.0 8.5 3.69 0.78%Sand Tailings 0.062 123.5 0.26 0.03 0.23 1 1.68 134.193 1865.28 155.96 345 0.79% 1.5 18% 0.85 0.00 0.85 0 0.98 0.17 1.00 1.0 0.057 61.96 217.92 1.000 17.56 0.96 0.72 0.64 1.61 1.0 0.026 1.00 155.96 0.433 37.99 27.78 2 4.81 495 1.9E-03 4.7E+02 1.8E-04 0 0.198 10903 0.03%2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.02% 0.0000
5.085 5604.54 81.2 0.386 81.2 9.8 4.26 0.48%Sand Tailings 0.062 123.5 0.27 0.03 0.24 1 1.66 134.859 1874.54 156.75 343 0.48% 1.3 18% 0.86 0.00 0.86 0 0.98 0.17 1.00 1.0 0.057 62.16 218.91 1.000 17.61 0.96 0.72 0.64 1.60 1.0 0.027 1.00 156.75 0.438 37.66 27.64 2 4.86 495 1.9E-03 4.7E+02 1.8E-04 0 0.199 10850 0.04%2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.02% 0.0000
5.249 5604.38 87.3 0.391 87.3 7.2 3.11 0.45%Sand Tailings 0.062 123.5 0.28 0.04 0.24 1 1.62 141.629 1968.64 164.58 361 0.45% 1.3 18% 0.87 0.00 0.87 0 0.98 0.18 1.00 1.0 0.057 64.16 228.74 1.000 17.67 0.96 0.74 0.63 1.60 1.0 0.026 1.00 164.58 1.000 84.19 50.93 2 4.91 495 1.9E-03 4.7E+02 1.8E-04 0 0.200 10798 0.04%2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.02% 0.0000
5.413 5604.22 72.7 0.332 72.7 2.6 1.13 0.46%Sand Tailings 0.062 123.5 0.29 0.04 0.25 1 1.68 122.447 1702.01 142.25 294 0.46% 1.3 18% 0.88 0.00 0.88 0 0.98 0.15 1.00 1.0 0.056 58.45 200.70 1.000 17.71 0.96 0.69 0.66 1.54 1.0 0.028 1.00 142.25 0.348 28.69 23.20 2 4.96 495 1.9E-03 4.7E+02 1.8E-04 0 0.200 10747 0.04%2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.02% 0.0000
5.577 5604.05 65.2 0.279 65.2 0.5 0.21 0.43%Sand Tailings 0.062 123.5 0.30 0.05 0.25 1 1.70 110.874 1541.15 128.78 259 0.43% 1.4 18% 0.89 0.00 0.89 0 0.98 0.13 1.00 1.0 0.056 55.01 183.79 0.604 10.72 0.96 0.66 0.67 1.50 1.0 0.028 1.00 128.78 0.279 22.54 16.63 2 5.01 495 1.9E-03 4.7E+02 1.9E-04 0 0.201 10697 0.04%2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.03% 0.0000
5.741 5603.89 56.7 0.216 56.7 -0.1 -0.05 0.38%Sand Tailings 0.062 123.5 0.31 0.05 0.26 1 1.70 96.458 1340.77 112.03 220 0.38% 1.4 18% 0.90 0.00 0.90 0 0.98 0.12 0.99 1.0 0.056 50.73 162.76 0.345 6.14 0.96 0.61 0.69 1.45 1.0 0.029 1.00 112.03 0.211 16.72 11.43 2 5.06 495 1.9E-03 4.7E+02 1.9E-04 0 0.201 10647 0.04% 2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.03% 0.0000
5.905 5603.72 48.8 0.259 48.8 -0.3 -0.13 0.53%Sand Tailings 0.062 123.5 0.32 0.06 0.26 1 1.70 83.028 1154.09 96.43 186 0.53% 1.5 18% 0.91 0.00 0.91 0 0.98 0.10 0.99 1.0 0.056 46.74 143.17 0.243 4.34 0.96 0.57 0.72 1.40 1.0 0.030 1.00 96.43 0.163 12.72 8.53 2 5.11 495 1.9E-03 4.7E+02 1.9E-04 0 0.202 10599 0.04% 2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.03% 0.0001
6.069 5603.56 32.1 0.220 32.1 -0.3 -0.12 0.68%Sand-Slime Tailing 0.059 119.0 0.33 0.06 0.27 1 1.70 54.621 759.23 63.44 120 0.69% 1.7 47% 0.92 0.00 0.92 0 0.98 0.08 0.99 1.0 0.056 52.55 115.98 0.171 3.05 0.96 0.46 0.77 1.31 1.0 0.032 1.07 67.96 0.109 8.36 5.70 2 5.16 495 1.8E-03 4.5E+02 2.0E-04 10 0.199 8371 0.03% 2.00 0.65 0.03% 0.003 0.34 0.079 0.765 0.42% 0.0007
6.234 5603.40 28.8 0.202 28.8 2.7 1.18 0.70%Sand-Slime Tailing 0.059 119.0 0.34 0.07 0.27 1 1.70 48.875 679.36 56.80 105 0.71% 1.8 47% 0.93 0.00 0.93 0 0.98 0.08 0.99 1.0 0.056 50.22 107.02 0.154 2.76 0.96 0.44 0.78 1.29 1.0 0.033 1.11 62.92 0.103 7.76 5.26 2 5.21 495 1.8E-03 4.5E+02 2.0E-04 10 0.200 8335 0.03% 2.00 0.65 0.03% 0.003 0.34 0.079 0.765 0.46% 0.0007
6.398 5603.23 33.3 0.244 33.3 9.5 4.10 0.73%Sand-Slime Tailing 0.059 119.0 0.35 0.07 0.27 1 1.70 56.559 786.17 65.81 120 0.74% 1.8 47% 0.94 0.00 0.94 0 0.97 0.08 0.99 1.0 0.056 53.38 119.19 0.178 3.18 0.96 0.47 0.77 1.31 1.0 0.032 1.08 71.27 0.114 8.41 5.80 2 5.26 495 1.8E-03 4.5E+02 2.0E-04 10 0.200 8299 0.04% 2.00 0.65 0.03% 0.003 0.34 0.079 0.765 0.49% 0.0008
6.562 5603.07 23.8 0.288 23.8 5.0 2.17 1.21%Sand-Slime Tailing 0.059 119.0 0.36 0.08 0.28 1 1.70 40.392 561.45 46.97 84 1.23% 2.0 47% 0.95 0.00 0.95 0 0.97 0.07 0.99 1.0 0.056 46.78 93.75 0.133 2.37 0.96 0.40 0.80 1.25 1.0 0.034 1.34 62.78 0.103 7.50 4.94 2 5.31 495 1.8E-03 4.5E+02 2.0E-04 10 0.201 8263 0.04% 2.00 0.65 0.03% 0.003 0.34 0.079 0.765 0.53% 0.0009
6.726 5602.90 18.2 0.238 18.1 12.5 5.43 1.31%Sand-Slime Tailing 0.059 119.0 0.37 0.08 0.28 1 1.70 30.753 427.47 35.87 63 1.34% 2.1 47% 0.96 0.00 0.96 0 0.97 0.06 0.99 1.0 0.056 42.88 78.75 0.111 1.99 0.96 0.35 0.80 1.25 1.0 0.034 1.55 55.52 0.096 6.87 4.43 2 5.36 495 1.8E-03 4.5E+02 2.1E-04 10 0.201 8228 0.04% 2.00 0.65 0.03% 0.004 0.34 0.079 0.765 0.57% 0.0009
6.890 5602.74 11.8 0.147 11.7 14.5 6.28 1.25%Sand-Slime Tailing 0.059 119.0 0.38 0.09 0.29 1 1.70 19.907 276.71 23.30 40 1.29% 2.3 47% 0.97 0.00 0.97 0 0.97 0.05 0.99 1.0 0.056 38.47 61.77 0.090 1.61 0.96 0.28 0.80 1.24 1.0 0.034 1.94 45.17 0.088 6.18 3.90 2 5.41 495 1.8E-03 4.5E+02 2.1E-04 10 0.202 8194 0.04% 2.00 0.65 0.03% 0.004 0.34 0.079 0.765 0.60% 0.0010
7.054 5602.58 9.2 0.122 9.1 23.8 10.33 1.32%Sand-Slime Tailing 0.059 119.0 0.39 0.09 0.29 1 1.70 15.453 214.80 18.24 30 1.38% 2.4 47% 0.98 0.00 0.98 0 0.97 0.05 0.99 1.0 0.056 36.70 54.94 0.082 1.48 0.96 0.25 0.80 1.24 1.0 0.034 2.36 42.97 0.086 5.96 3.72 2 5.46 495 1.8E-03 4.5E+02 2.1E-04 10 0.202 8160 0.04% 2.00 0.65 0.03% 0.004 0.34 0.079 0.765 0.63% 0.0010
7.218 5602.41 9.2 0.089 9.0 30.6 13.24 0.97%Sand-Slime Tailing 0.059 119.0 0.40 0.10 0.30 1 1.70 15.232 211.72 18.07 29 1.02% 2.3 47% 0.99 0.00 0.99 0 0.97 0.05 0.99 1.0 0.056 36.64 54.71 0.082 1.48 0.96 0.25 0.80 1.24 1.0 0.034 2.11 38.20 0.082 5.59 3.54 2 5.51 495 1.8E-03 4.5E+02 2.1E-04 10 0.203 8127 0.04% 2.00 0.65 0.03% 0.004 0.34 0.079 0.765 0.67% 0.0011
7.382 5602.25 9.9 0.100 9.7 31.6 13.69 1.01%Sand-Slime Tailing 0.059 119.0 0.41 0.10 0.30 1 1.70 16.524 229.68 19.58 31 1.05% 2.3 47% 1.00 0.00 1.00 0 0.97 0.05 0.99 1.0 0.056 37.17 56.75 0.084 1.52 0.96 0.26 0.80 1.23 1.0 0.034 2.05 40.20 0.083 5.62 3.57 2 5.56 495 1.8E-03 4.5E+02 2.2E-04 10 0.203 8094 0.04% 2.00 0.65 0.03% 0.005 0.34 0.079 0.765 0.70% 0.0011
7.546 5602.08 8.5 0.080 8.3 34.3 14.88 0.94%Sand-Slime Tailing 0.059 119.0 0.42 0.11 0.31 1 1.70 14.127 196.37 16.83 26 0.99% 2.4 47% 1.01 0.00 1.01 0 0.97 0.05 0.99 1.0 0.055 36.20 53.04 0.080 1.45 0.96 0.24 0.80 1.23 1.0 0.034 2.24 37.68 0.081 5.40 3.43 2 5.61 495 1.8E-03 4.5E+02 2.2E-04 10 0.204 8061 0.04% 2.00 0.65 0.03% 0.005 0.34 0.079 0.765 0.73% 0.0012
7.710 5601.92 10.2 0.068 10.0 38.1 16.51 0.67%Sand-Slime Tailing 0.059 119.0 0.43 0.11 0.31 1 1.70 16.932 235.35 20.13 31 0.70% 2.2 47% 1.02 0.00 1.02 0 0.97 0.05 0.99 1.0 0.055 37.36 57.50 0.085 1.54 0.96 0.26 0.80 1.23 1.0 0.034 1.78 35.77 0.080 5.22 3.38 2 5.66 495 1.8E-03 4.5E+02 2.2E-04 10 0.204 8029 0.04% 2.00 0.65 0.03% 0.005 0.34 0.079 0.765 0.76% 0.0013
7.874 5601.76 8.5 0.060 8.2 38.1 16.49 0.71%Sand-Slime Tailing 0.059 119.0 0.44 0.12 0.32 1 1.70 14.008 194.71 16.74 25 0.75% 2.3 47% 1.03 0.00 1.03 0 0.96 0.05 0.99 1.0 0.055 36.17 52.91 0.080 1.45 0.96 0.24 0.80 1.22 1.0 0.035 2.07 34.68 0.079 5.09 3.27 2 5.71 495 1.8E-03 4.5E+02 2.2E-04 10 0.205 7997 0.04% 2.00 0.65 0.03% 0.005 0.34 0.079 0.765 0.80% 0.0013
8.038 5601.59 7.6 0.064 7.3 45.6 19.77 0.84%Sand-Slime Tailing 0.059 119.0 0.45 0.13 0.32 1 1.70 12.478 173.44 15.05 22 0.89% 2.4 47% 1.04 0.00 1.04 0 0.96 0.05 0.99 1.0 0.055 35.58 50.64 0.078 1.41 0.96 0.22 0.80 1.22 1.0 0.035 2.41 36.22 0.080 5.10 3.26 2 5.76 495 1.8E-03 4.5E+02 2.2E-04 10 0.205 7966 0.04% 2.00 0.65 0.03% 0.005 0.34 0.079 0.765 0.83% 0.0014
8.202 5601.43 8.1 0.076 7.8 53.2 23.04 0.94%Sand-Slime Tailing 0.059 119.0 0.46 0.13 0.33 1 1.70 13.226 183.84 16.02 23 0.99% 2.4 47% 1.05 0.00 1.05 0 0.96 0.05 0.99 1.0 0.055 35.92 51.94 0.079 1.44 0.96 0.23 0.80 1.21 1.0 0.035 2.42 38.81 0.082 5.16 3.30 2 5.81 495 1.8E-03 4.5E+02 2.3E-04 10 0.206 7935 0.04% 2.00 0.65 0.03% 0.006 0.34 0.079 0.765 0.86% 0.0014
8.366 5601.26 9.0 0.102 8.6 58.4 25.30 1.14%Sand-Slime Tailing 0.059 119.0 0.47 0.14 0.33 1 1.70 14.637 203.45 17.72 26 1.20% 2.4 47% 1.06 0.00 1.06 0 0.96 0.05 0.99 1.0 0.055 36.52 54.24 0.082 1.49 0.96 0.24 0.80 1.21 1.0 0.035 2.46 43.59 0.086 5.34 3.41 2 5.86 495 1.8E-03 4.5E+02 2.3E-04 10 0.206 7905 0.04% 2.00 0.65 0.03% 0.006 0.34 0.079 0.765 0.89% 0.0015
8.530 5601.10 9.6 0.210 9.2 60.7 26.28 2.18%Slime Tailings 0.057 113.1 0.48 0.14 0.33 1 1.70 15.708 218.34 18.99 27 2.30% 2.6 71% 1.07 0.00 1.07 0 0.96 0.05 0.99 1.0 0.055 36.70 55.69 0.083 1.52 0.95 0.25 0.80 1.21 1.0 0.035 3.18 60.45 0.101 6.14 3.83 2 5.91 495 1.8E-03 4.3E+02 2.4E-04 16 0.458 6484 0.05% 2.00 0.65 0.03% 0.009 0.34 0.079 0.765 1.32% 0.0022
8.694 5600.94 9.5 0.212 9.1 55.4 24.01 2.24%Slime Tailings 0.057 113.1 0.48 0.15 0.34 1 1.70 15.487 215.27 18.67 26 2.36% 2.6 71% 1.08 0.00 1.08 0 0.96 0.05 0.99 1.0 0.055 36.59 55.26 0.083 1.51 0.95 0.25 0.80 1.20 1.0 0.035 3.29 61.47 0.102 6.13 3.82 2 5.96 495 1.8E-03 4.3E+02 2.4E-04 16 0.459 6461 0.05% 2.00 0.65 0.03% 0.009 0.34 0.079 0.765 1.35% 0.0022
8.858 5600.77 13.5 0.188 13.3 28.4 12.31 1.39%Sand-Slime Tailing 0.059 119.0 0.49 0.15 0.34 1 1.70 22.610 314.28 26.61 38 1.45% 2.3 47% 1.09 0.00 1.09 0 0.96 0.06 0.99 1.0 0.055 39.63 66.24 0.095 1.74 0.95 0.30 0.80 1.20 1.0 0.035 2.09 55.72 0.096 5.72 3.73 2 6.01 495 1.8E-03 4.5E+02 2.3E-04 10 0.208 7819 0.04% 2.00 0.65 0.03% 0.006 0.34 0.079 0.765 0.98% 0.0016
9.022 5600.61 9.0 0.166 8.9 12.6 5.48 1.85%Slime Tailings 0.057 113.1 0.50 0.16 0.35 1 1.70 15.130 210.31 17.73 24 1.96% 2.6 71% 1.10 0.00 1.10 0 0.96 0.05 0.99 1.0 0.055 36.26 53.99 0.081 1.49 0.95 0.24 0.80 1.20 1.0 0.035 3.17 56.22 0.097 5.68 3.59 2 6.06 495 1.8E-03 4.3E+02 2.5E-04 16 0.460 6414 0.06% 2.00 0.65 0.03% 0.009 0.34 0.079 0.765 1.41% 0.0023
9.186 5600.44 7.1 0.173 6.9 30.7 13.29 2.45%Slime Tailings 0.057 113.1 0.51 0.16 0.35 1 1.70 11.662 162.10 13.92 19 2.65% 2.7 71% 1.10 0.00 1.10 0 0.96 0.05 0.99 1.0 0.055 34.94 48.86 0.076 1.40 0.95 0.22 0.80 1.20 1.0 0.035 4.35 60.51 0.101 5.86 3.63 2 6.11 495 1.8E-03 4.3E+02 2.5E-04 16 0.460 6392 0.06% 2.00 0.65 0.03% 0.009 0.34 0.079 0.765 1.44% 0.0024
9.350 5600.28 12.4 0.106 12.1 47.2 20.44 0.86%Sand-Slime Tailing 0.059 119.0 0.52 0.17 0.36 1 1.70 20.536 285.45 24.43 33 0.89% 2.3 47% 1.11 0.00 1.11 0 0.96 0.06 0.99 1.0 0.054 38.87 63.30 0.092 1.68 0.95 0.29 0.80 1.19 1.0 0.035 1.87 45.60 0.088 5.06 3.37 2 6.16 460 1.8E-03 3.9E+02 2.8E-04 10 0.209 7736 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.71% 0.0028
9.514 5600.12 15.4 0.097 15.3 14.9 6.47 0.63%Sand-Slime Tailing 0.059 119.0 0.53 0.17 0.36 1 1.70 25.959 360.83 30.33 41 0.65% 2.1 47% 1.12 0.00 1.12 0 0.95 0.06 0.98 1.0 0.054 40.94 71.27 0.101 1.86 0.95 0.32 0.80 1.19 1.0 0.035 1.50 45.61 0.088 4.99 3.43 2 6.21 460 1.8E-03 3.9E+02 2.8E-04 10 0.209 7708 0.07% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.75% 0.0029
9.678 5599.95 15.1 0.080 15.0 11.2 4.83 0.53%Sand-Slime Tailing 0.059 119.0 0.54 0.18 0.37 1 1.70 25.517 354.69 29.77 40 0.55% 2.1 47% 1.13 0.00 1.13 0 0.95 0.06 0.98 1.0 0.054 40.74 70.52 0.100 1.85 0.95 0.32 0.80 1.19 1.0 0.035 1.46 43.48 0.086 4.83 3.34 2 6.26 460 1.8E-03 3.9E+02 2.8E-04 10 0.210 7680 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.78% 0.0029
9.842 5599.79 22.9 0.122 22.8 15.7 6.78 0.53%Sand-Slime Tailing 0.059 119.0 0.55 0.18 0.37 1 1.70 38.743 538.53 45.19 60 0.55% 1.9 47% 1.14 0.00 1.14 0 0.95 0.07 0.98 1.0 0.054 46.15 91.34 0.129 2.39 0.95 0.39 0.80 1.18 1.0 0.035 1.23 55.64 0.096 5.32 3.85 2 6.31 460 1.8E-03 3.9E+02 2.9E-04 10 0.210 7653 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.82% 0.0030
10.006 5599.62 18.5 0.100 18.4 10.4 4.49 0.54%Sand-Slime Tailing 0.059 119.0 0.56 0.19 0.38 1 1.70 31.263 434.56 36.44 48 0.56% 2.0 47% 1.15 0.00 1.15 0 0.95 0.06 0.98 1.0 0.054 43.08 79.52 0.112 2.07 0.95 0.35 0.80 1.18 1.0 0.036 1.35 49.19 0.091 4.98 3.53 2 6.36 460 1.8E-03 3.9E+02 2.9E-04 10 0.211 7626 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.85% 0.0030
10.170 5599.46 16.5 0.082 16.5 6.1 2.66 0.50%Sand-Slime Tailing 0.059 119.0 0.57 0.19 0.38 1 1.70 28.050 389.90 32.65 42 0.51% 2.1 47% 1.16 0.00 1.16 0 0.95 0.06 0.98 1.0 0.054 41.75 74.41 0.105 1.95 0.95 0.33 0.80 1.18 1.0 0.036 1.40 45.68 0.088 4.76 3.36 2 6.41 460 1.8E-03 3.9E+02 2.9E-04 10 0.211 7600 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.89% 0.0031
10.335 5599.30 11.5 0.074 11.5 5.9 2.54 0.64%Sand-Slime Tailing 0.059 119.0 0.58 0.20 0.38 1 1.70 19.482 270.80 22.70 28 0.68% 2.3 47% 1.17 0.00 1.17 0 0.95 0.05 0.98 1.0 0.054 38.26 60.96 0.089 1.65 0.95 0.28 0.80 1.18 1.0 0.036 1.87 42.42 0.085 4.56 3.10 2 6.46 460 1.8E-03 3.9E+02 2.9E-04 10 0.212 7573 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.92% 0.0032
10.499 5599.13 8.2 0.078 8.2 6.6 2.85 0.95%Sand-Slime Tailing 0.059 119.0 0.59 0.20 0.39 1 1.70 13.855 192.58 16.17 20 1.03% 2.5 47% 1.18 0.00 1.18 0 0.95 0.05 0.98 1.0 0.054 35.97 52.15 0.080 1.48 0.95 0.23 0.80 1.17 1.0 0.036 2.78 45.02 0.087 4.62 3.05 2 6.51 460 1.8E-03 3.9E+02 3.0E-04 10 0.212 7547 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.96% 0.0032
10.663 5598.97 8.3 0.043 8.3 9.0 3.92 0.52%Sand-Slime Tailing 0.059 119.0 0.60 0.21 0.39 1 1.70 14.059 195.42 16.44 20 0.56% 2.4 47% 1.19 0.00 1.19 0 0.95 0.05 0.98 1.0 0.054 36.07 52.51 0.080 1.49 0.95 0.23 0.80 1.17 1.0 0.036 2.24 36.81 0.081 4.21 2.85 2 6.56 460 1.8E-03 3.9E+02 3.0E-04 10 0.213 7522 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.99% 0.0033
10.827 5598.80 9.2 0.024 9.2 10.5 4.53 0.26%Sand-Slime Tailing 0.059 119.0 0.61 0.21 0.40 1 1.70 15.589 216.69 18.23 22 0.28% 2.2 47% 1.20 0.00 1.20 0 0.95 0.05 0.98 1.0 0.054 36.70 54.93 0.082 1.53 0.95 0.25 0.80 1.17 1.0 0.036 1.76 32.06 0.077 3.96 2.75 2 6.61 460 1.8E-03 3.9E+02 3.0E-04 10 0.213 7496 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 2.03% 0.0033
10.991 5598.64 8.6 0.074 8.5 13.3 5.75 0.87%Sand-Slime Tailing 0.059 119.0 0.62 0.22 0.40 1 1.70 14.399 200.15 16.89 20 0.93% 2.5 47% 1.21 0.00 1.21 0 0.94 0.05 0.98 1.0 0.054 36.22 53.11 0.081 1.50 0.95 0.24 0.80 1.16 1.0 0.036 2.67 45.07 0.088 4.47 2.99 2 6.66 460 1.8E-03 3.9E+02 3.0E-04 10 0.213 7471 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.07% 0.0034
11.155 5598.48 6.3 0.099 6.2 15.1 6.52 1.58%Slime Tailings 0.057 113.1 0.63 0.22 0.41 1 1.70 10.489 145.80 12.37 14 1.76% 2.8 71% 1.22 0.00 1.22 0 0.94 0.05 0.98 1.0 0.054 34.39 46.76 0.074 1.39 0.95 0.20 0.80 1.16 1.0 0.036 4.38 54.23 0.095 4.79 3.09 2 6.71 460 1.8E-03 3.7E+02 3.2E-04 16 0.465 6133 0.09% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.58% 0.0042
11.319 5598.31 5.1 0.105 5.0 18.6 8.07 2.06%Slime Tailings 0.057 113.1 0.64 0.23 0.41 1 1.70 8.449 117.44 10.04 11 2.36% 2.9 71% 1.23 0.00 1.23 0 0.94 0.05 0.98 1.0 0.054 33.58 43.63 0.072 1.34 0.95 0.18 0.80 1.16 1.0 0.036 5.80 58.28 0.098 4.93 3.13 2 6.76 460 1.8E-03 3.7E+02 3.2E-04 16 0.466 6114 0.10% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.62% 0.0043
11.483 5598.15 4.3 0.115 4.1 26.9 11.65 2.67%Slime Tailings 0.057 113.1 0.65 0.23 0.42 1 1.70 7.038 97.83 8.51 9 3.14% 3.1 71% 1.24 0.00 1.24 0 0.94 0.04 0.98 1.0 0.054 33.05 41.56 0.070 1.31 0.95 0.17 0.80 1.16 1.0 0.036 7.36 62.61 0.103 5.10 3.20 2 6.81 460 1.8E-03 3.7E+02 3.3E-04 16 0.466 6095 0.10% 2.00 0.65 0.03%0.017 0.34 0.079 0.765 2.65% 0.0044
11.647 5597.98 7.3 0.094 7.1 44.1 19.13 1.28%Slime Tailings 0.057 113.1 0.66 0.24 0.42 1 1.70 12.019 167.06 14.50 16 1.41% 2.6 71% 1.25 0.00 1.25 0 0.94 0.05 0.98 1.0 0.053 35.14 49.64 0.077 1.45 0.95 0.22 0.80 1.15 1.0 0.036 3.63 52.71 0.094 4.60 3.02 2 6.86 460 1.8E-03 3.7E+02 3.3E-04 16 0.467 6077 0.10% 2.00 0.65 0.03% 0.018 0.34 0.079 0.765 2.69% 0.0044
11.811 5597.82 9.0 0.165 8.8 27.6 11.97 1.84%Slime Tailings 0.057 113.1 0.67 0.24 0.42 1 1.70 14.943 207.71 17.70 20 1.99% 2.7 71% 1.26 0.00 1.26 0 0.94 0.05 0.98 1.0 0.053 36.25 53.95 0.081 1.53 0.95 0.24 0.80 1.15 1.0 0.036 3.68 65.18 0.106 5.15 3.34 2 6.91 460 1.8E-03 3.7E+02 3.3E-04 16 0.467 6058 0.10% 2.00 0.65 0.03% 0.018 0.34 0.079 0.765 2.73% 0.0045
11.975 5597.66 8.6 0.084 8.5 20.2 8.75 0.98%Sand-Slime Tailing 0.059 119.0 0.68 0.25 0.43 1 1.70 14.416 200.38 16.99 19 1.06% 2.5 47% 1.27 0.00 1.27 0 0.94 0.05 0.98 1.0 0.053 36.26 53.25 0.081 1.52 0.95 0.24 0.80 1.15 1.0 0.036 2.93 49.71 0.091 4.40 2.96 2 6.96 460 1.8E-03 3.9E+02 3.2E-04 10 0.216 7332 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.28% 0.0037
12.139 5597.49 10.5 0.047 10.4 14.1 6.11 0.45%Sand-Slime Tailing 0.059 119.0 0.69 0.25 0.43 1 1.70 17.663 245.52 20.69 23 0.48% 2.3 47% 1.28 0.00 1.28 0 0.94 0.05 0.98 1.0 0.053 37.56 58.25 0.086 1.62 0.95 0.26 0.80 1.15 1.0 0.036 1.95 40.29 0.084 3.98 2.80 2 7.01 460 1.8E-03 3.9E+02 3.2E-04 10 0.216 7309 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.31% 0.0038
12.303 5597.33 10.3 0.077 10.2 9.8 4.26 0.75%Sand-Slime Tailing 0.059 119.0 0.70 0.26 0.44 1 1.70 17.362 241.32 20.29 22 0.80% 2.4 47% 1.29 0.00 1.29 0 0.94 0.05 0.98 1.0 0.053 37.42 57.70 0.085 1.61 0.95 0.26 0.80 1.14 1.0 0.036 2.34 47.56 0.090 4.23 2.92 2 7.06 460 1.8E-03 3.9E+02 3.2E-04 10 0.217 7286 0.09% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.35% 0.0039
12.467 5597.16 6.7 0.073 6.6 12.8 5.56 1.09%Slime Tailings 0.057 113.1 0.71 0.26 0.44 1 1.68 11.118 154.55 13.07 14 1.22% 2.7 71% 1.30 0.00 1.30 0 0.93 0.05 0.98 1.0 0.053 34.64 47.71 0.075 1.42 0.95 0.21 0.80 1.14 1.0 0.036 3.85 50.30 0.092 4.29 2.86 2 7.11 460 1.8E-03 3.7E+02 3.4E-04 16 0.469 5983 0.11% 2.00 0.65 0.03% 0.019 0.34 0.079 0.765 2.88% 0.0047
12.631 5597.00 8.2 0.034 8.1 16.4 7.12 0.41%Sand-Slime Tailing 0.059 119.0 0.71 0.27 0.45 1 1.67 13.584 188.82 15.98 17 0.45% 2.4 47% 1.31 0.00 1.31 0 0.93 0.05 0.98 1.0 0.053 35.90 51.88 0.079 1.50 0.95 0.23 0.80 1.14 1.0 0.037 2.35 37.50 0.081 3.76 2.63 2 7.16 460 1.8E-03 3.9E+02 3.3E-04 10 0.218 7242 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.42% 0.0040
12.795 5596.83 9.3 0.032 9.2 15.5 6.73 0.34%Sand-Slime Tailing 0.059 119.0 0.72 0.27 0.45 1 1.66 15.282 212.42 17.94 19 0.37% 2.3 47% 1.32 0.00 1.32 0 0.93 0.05 0.98 1.0 0.053 36.59 54.53 0.082 1.56 0.94 0.24 0.80 1.14 1.0 0.037 2.04 36.66 0.081 3.69 2.62 2 7.21 460 1.8E-03 3.9E+02 3.3E-04 10 0.218 7219 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.46% 0.0040
12.959 5596.67 9.4 0.034 9.3 15.5 6.73 0.36%Sand-Slime Tailing 0.059 119.0 0.73 0.28 0.46 1 1.64 15.259 212.10 17.91 19 0.39% 2.3 47% 1.33 0.00 1.33 0 0.93 0.05 0.98 1.0 0.053 36.58 54.49 0.082 1.56 0.94 0.24 0.80 1.14 1.0 0.037 2.08 37.23 0.081 3.68 2.62 2 7.26 460 1.8E-03 3.9E+02 3.3E-04 10 0.218 7197 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.50% 0.0041
13.123 5596.51 9.5 0.043 9.4 15.8 6.83 0.45%Sand-Slime Tailing 0.059 119.0 0.74 0.28 0.46 1 1.63 15.350 213.37 18.02 19 0.49% 2.4 47% 1.34 0.00 1.34 0 0.93 0.05 0.98 1.0 0.053 36.62 54.63 0.082 1.56 0.94 0.25 0.80 1.13 1.0 0.037 2.20 39.68 0.083 3.73 2.65 2 7.31 460 1.8E-03 3.9E+02 3.3E-04 10 0.219 7176 0.09% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.53% 0.0042
13.287 5596.34 9.1 0.054 9.0 16.3 7.05 0.59%Sand-Slime Tailing 0.059 119.0 0.75 0.29 0.47 1 1.62 14.632 203.38 17.18 18 0.64% 2.4 47% 1.35 0.00 1.35 0 0.93 0.05 0.98 1.0 0.052 36.33 53.51 0.081 1.54 0.94 0.24 0.80 1.13 1.0 0.037 2.49 42.76 0.086 3.81 2.68 2 7.36 460 1.8E-03 3.9E+02 3.4E-04 10 0.219 7154 0.09% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.57% 0.0042
13.451 5596.18 9.2 0.068 9.1 17.0 7.36 0.74%Sand-Slime Tailing 0.059 119.0 0.76 0.29 0.47 1 1.61 14.615 203.15 17.17 18 0.81% 2.5 47% 1.36 0.00 1.36 0 0.93 0.05 0.98 1.0 0.052 36.32 53.50 0.081 1.55 0.94 0.24 0.80 1.13 1.0 0.037 2.69 46.27 0.089 3.90 2.72 2 7.41 460 1.8E-03 3.9E+02 3.4E-04 10 0.220 7133 0.10% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.61% 0.0043
13.615 5596.01 9.3 0.080 9.2 17.0 7.38 0.86%Sand-Slime Tailing 0.059 119.0 0.77 0.30 0.47 1 1.59 14.710 204.47 17.28 18 0.93% 2.5 47% 1.37 0.00 1.37 0 0.93 0.05 0.98 1.0 0.052 36.36 53.64 0.081 1.55 0.94 0.24 0.80 1.13 1.0 0.037 2.84 49.02 0.091 3.97 2.76 2 7.46 460 1.8E-03 3.9E+02 3.4E-04 10 0.220 7111 0.10% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.65% 0.0043
13.779 5595.85 11.2 0.068 11.1 17.5 7.60 0.61%Sand-Slime Tailing 0.059 119.0 0.78 0.30 0.48 1 1.58 17.525 243.59 20.55 22 0.65% 2.4 47% 1.38 0.00 1.38 0 0.92 0.05 0.98 1.0 0.052 37.51 58.07 0.086 1.65 0.94 0.26 0.80 1.12 1.0 0.037 2.20 45.17 0.088 3.79 2.72 2 7.51 460 1.8E-03 3.9E+02 3.4E-04 10 0.220 7090 0.10% 2.00 0.65 0.03% 0.018 0.34 0.079 0.765 2.69% 0.0044
13.943 5595.69 14.4 0.082 14.3 15.5 6.70 0.57%Sand-Slime Tailing 0.059 119.0 0.79 0.31 0.48 1 1.54 22.107 307.29 25.85 28 0.60% 2.3 47% 1.39 0.00 1.39 0 0.92 0.06 0.97 1.0 0.052 39.37 65.22 0.094 1.81 0.94 0.29 0.80 1.12 1.0 0.037 1.81 46.71 0.089 3.81 2.81 2 7.56 460 1.8E-03 3.9E+02 3.5E-04 10 0.221 7070 0.10% 2.00 0.65 0.03% 0.018 0.34 0.079 0.765 2.72% 0.0045
14.107 5595.52 11.4 0.115 11.3 15.5 6.72 1.01%Sand-Slime Tailing 0.059 119.0 0.80 0.31 0.49 1 1.56 17.669 245.60 20.70 22 1.08% 2.5 47% 1.39 0.00 1.39 0 0.92 0.05 0.97 1.0 0.052 37.56 58.26 0.086 1.65 0.94 0.26 0.80 1.12 1.0 0.037 2.64 54.59 0.095 4.04 2.85 2 7.61 460 1.8E-03 3.9E+02 3.5E-04 10 0.221 7049 0.10% 2.00 0.65 0.03% 0.018 0.34 0.079 0.765 2.76% 0.0045
14.271 5595.36 8.1 0.115 8.0 17.0 7.37 1.43%Slime Tailings 0.057 113.1 0.81 0.32 0.49 1 1.55 12.321 171.26 14.50 15 1.59% 2.7 71% 1.40 0.00 1.40 0 0.92 0.05 0.98 1.0 0.052 35.14 49.64 0.077 1.48 0.94 0.22 0.80 1.12 1.0 0.037 4.03 58.43 0.099 4.15 2.82 2 7.66 460 1.8E-03 3.7E+02 3.7E-04 16 0.473 5792 0.12% 2.00 0.65 0.03% 0.022 0.34 0.079 0.765 3.31% 0.0054
14.436 5595.19 7.0 0.051 6.9 19.3 8.34 0.73%Sand-Slime Tailing 0.059 119.0 0.82 0.32 0.50 1 1.54 10.571 146.94 12.49 12 0.83% 2.6 47% 1.41 0.00 1.41 0 0.92 0.05 0.98 1.0 0.052 34.68 47.17 0.075 1.44 0.94 0.20 0.80 1.12 1.0 0.037 3.54 44.20 0.087 3.62 2.53 2 7.71 460 1.8E-03 3.9E+02 3.5E-04 10 0.222 7010 0.10% 2.00 0.65 0.03% 0.019 0.34 0.079 0.765 2.84% 0.0047
14.600 5595.03 6.4 0.033 6.3 17.8 7.71 0.52%Sand-Slime Tailing 0.059 119.0 0.83 0.33 0.50 1 1.53 9.534 132.52 11.27 11 0.60% 2.6 47% 1.42 0.00 1.42 0 0.92 0.05 0.98 1.0 0.052 34.25 45.52 0.073 1.41 0.94 0.19 0.80 1.11 1.0 0.037 3.48 39.19 0.083 3.42 2.42 2 7.76 500 1.8E-03 4.6E+02 3.0E-04 10 0.222 6990 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.87% 0.0031
14.764 5594.87 5.4 0.063 5.2 20.0 8.68 1.18%Slime Tailings 0.057 113.1 0.84 0.33 0.51 1 1.52 7.926 110.18 9.43 9 1.40% 2.9 71% 1.43 0.00 1.43 0 0.92 0.04 0.98 1.0 0.052 33.37 42.80 0.071 1.37 0.94 0.18 0.80 1.11 1.0 0.037 5.37 50.59 0.092 3.78 2.57 2 7.81 500 1.8E-03 4.4E+02 3.2E-04 16 0.474 5743 0.09% 2.00 0.65 0.03%0.015 0.34 0.079 0.765 2.33% 0.0038
14.928 5594.70 4.8 0.108 4.6 28.3 12.24 2.27%Slime Tailings 0.057 113.1 0.85 0.34 0.51 1 1.51 6.912 96.08 8.34 8 2.76% 3.1 71% 1.44 0.00 1.44 0 0.92 0.04 0.98 1.0 0.052 32.99 41.33 0.070 1.35 0.94 0.17 0.80 1.11 1.0 0.037 7.58 63.21 0.103 4.22 2.78 2 7.86 500 1.8E-03 4.4E+02 3.2E-04 16 0.474 5728 0.09% 2.00 0.65 0.03%0.015 0.34 0.079 0.765 2.36% 0.0039
15.092 5594.54 4.8 0.126 4.7 28.1 12.16 2.60%Slime Tailings 0.057 113.1 0.86 0.35 0.51 1 1.50 6.988 97.13 8.42 8 3.16% 3.1 71% 1.45 0.00 1.45 0 0.91 0.04 0.98 1.0 0.052 33.02 41.44 0.070 1.35 0.94 0.17 0.80 1.11 1.0 0.037 7.94 66.87 0.108 4.36 2.85 2 7.91 500 1.8E-03 4.4E+02 3.2E-04 16 0.475 5713 0.09% 2.00 0.65 0.03%0.016 0.34 0.079 0.765 2.39% 0.0039
15.256 5594.37 5.7 0.083 5.6 15.5 6.72 1.45%Slime Tailings 0.057 113.1 0.87 0.35 0.52 1 1.49 8.357 116.16 9.87 9 1.71% 2.9 71% 1.46 0.00 1.46 0 0.91 0.05 0.98 1.0 0.052 33.53 43.40 0.071 1.39 0.94 0.18 0.80 1.11 1.0 0.037 5.61 55.39 0.096 3.84 2.62 2 7.96 500 1.8E-03 4.4E+02 3.2E-04 16 0.475 5698 0.09% 2.00 0.65 0.03%0.016 0.34 0.079 0.765 2.42% 0.0040
15.420 5594.21 8.3 0.060 8.2 16.1 6.98 0.72%Sand-Slime Tailing 0.059 119.0 0.88 0.36 0.52 1 1.48 12.153 168.92 14.29 14 0.81% 2.6 47% 1.47 0.00 1.47 0 0.91 0.05 0.97 1.0 0.051 35.31 49.60 0.077 1.50 0.94 0.22 0.80 1.10 1.0 0.037 3.18 45.42 0.088 3.49 2.50 2 8.01 500 1.8E-03 4.6E+02 3.1E-04 10 0.224 6896 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 2.00% 0.0033
15.584 5594.05 8.5 0.058 8.4 8.8 3.83 0.68%Sand-Slime Tailing 0.059 119.0 0.89 0.36 0.53 1 1.47 12.348 171.63 14.44 14 0.76% 2.6 47% 1.48 0.00 1.48 0 0.91 0.05 0.97 1.0 0.051 35.36 49.80 0.077 1.51 0.94 0.22 0.80 1.10 1.0 0.038 3.10 44.78 0.087 3.44 2.48 2 8.06 500 1.8E-03 4.6E+02 3.1E-04 10 0.224 6878 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 2.03% 0.0033
15.748 5593.88 7.7 0.056 7.6 10.8 4.66 0.73%Sand-Slime Tailing 0.059 119.0 0.90 0.37 0.53 1 1.46 11.084 154.06 12.99 13 0.83% 2.6 47% 1.49 0.00 1.49 0 0.91 0.05 0.97 1.0 0.051 34.86 47.84 0.075 1.47 0.94 0.21 0.80 1.10 1.0 0.038 3.48 45.16 0.088 3.43 2.45 2 8.11 500 1.8E-03 4.6E+02 3.1E-04 10 0.225 6859 0.08% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 2.06% 0.0034
15.912 5593.72 8.0 0.059 7.9 13.9 6.00 0.74%Sand-Slime Tailing 0.059 119.0 0.91 0.37 0.54 1 1.45 11.457 159.25 13.45 13 0.83% 2.6 47% 1.50 0.00 1.50 0 0.91 0.05 0.97 1.0 0.051 35.02 48.47 0.076 1.49 0.94 0.21 0.80 1.10 1.0 0.038 3.39 45.63 0.088 3.41 2.45 2 8.16 500 1.8E-03 4.6E+02 3.2E-04 10 0.225 6840 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.09% 0.0034
16.076 5593.55 8.8 0.072 8.7 17.5 7.57 0.82%Sand-Slime Tailing 0.059 119.0 0.92 0.38 0.54 1 1.44 12.487 173.57 14.68 15 0.91% 2.6 47% 1.51 0.00 1.51 0 0.91 0.05 0.97 1.0 0.051 35.45 50.14 0.078 1.52 0.94 0.22 0.80 1.10 1.0 0.038 3.28 48.10 0.090 3.47 2.49 2 8.21 500 1.8E-03 4.6E+02 3.2E-04 10 0.226 6822 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.12% 0.0035
16.240 5593.39 9.7 0.120 9.5 20.4 8.83 1.24%Sand-Slime Tailing 0.059 119.0 0.93 0.38 0.55 1 1.43 13.603 189.08 16.01 16 1.37% 2.6 47% 1.52 0.00 1.52 0 0.91 0.05 0.97 1.0 0.051 35.92 51.93 0.079 1.56 0.94 0.23 0.80 1.10 1.0 0.038 3.59 57.55 0.098 3.73 2.64 2 8.26 500 1.8E-03 4.6E+02 3.2E-04 10 0.226 6804 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.15% 0.0035
16.404 5593.23 8.3 0.200 8.1 21.3 9.25 2.42%Slime Tailings 0.057 113.1 0.94 0.39 0.55 1 1.42 11.536 160.35 13.62 13 2.73% 2.9 71% 1.53 0.00 1.53 0 0.90 0.05 0.97 1.0 0.051 34.83 48.45 0.076 1.49 0.94 0.21 0.80 1.09 1.0 0.038 5.42 73.86 0.117 4.45 2.97 2 8.31 500 1.8E-03 4.4E+02 3.4E-04 16 0.477 5593 0.10% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.62% 0.0043
16.568 5593.06 7.0 0.183 6.9 21.4 9.27 2.60%Slime Tailings 0.057 113.1 0.95 0.39 0.55 1 1.41 9.747 135.49 11.54 11 3.00% 3.0 71% 1.54 0.00 1.54 0 0.90 0.05 0.97 1.0 0.051 34.11 45.65 0.073 1.45 0.94 0.20 0.80 1.09 1.0 0.038 6.34 73.18 0.116 4.38 2.91 2 8.36 500 1.8E-03 4.4E+02 3.4E-04 16 0.478 5579 0.10% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.65% 0.0044
16.732 5592.90 6.2 0.154 6.1 20.6 8.92 2.48%Slime Tailings 0.057 113.1 0.95 0.40 0.56 1 1.40 8.540 118.71 10.13 9 2.93% 3.0 71% 1.55 0.00 1.55 0 0.90 0.05 0.97 1.0 0.051 33.61 43.74 0.072 1.41 0.94 0.18 0.80 1.09 1.0 0.038 6.88 69.68 0.111 4.16 2.79 2 8.41 500 1.8E-03 4.4E+02 3.4E-04 16 0.478 5565 0.10% 2.00 0.65 0.03% 0.018 0.34 0.079 0.765 2.68% 0.0044
16.896 5592.73 6.9 0.091 6.7 28.8 12.50 1.32%Slime Tailings 0.057 113.1 0.96 0.40 0.56 1 1.39 9.383 130.43 11.19 11 1.53% 2.8 71% 1.56 0.00 1.56 0 0.90 0.05 0.97 1.0 0.051 33.98 45.17 0.073 1.44 0.94 0.19 0.80 1.09 1.0 0.038 4.96 55.55 0.096 3.56 2.50 2 8.46 500 1.8E-03 4.4E+02 3.5E-04 16 0.478 5552 0.10% 2.00 0.65 0.03% 0.018 0.34 0.079 0.765 2.71% 0.0044
17.060 5592.57 9.6 0.063 9.5 22.1 9.56 0.66%Sand-Slime Tailing 0.059 119.0 0.97 0.41 0.57 1 1.39 13.119 182.36 15.46 15 0.73% 2.5 47% 1.57 0.00 1.57 0 0.90 0.05 0.97 1.0 0.050 35.72 51.18 0.079 1.56 0.93 0.23 0.80 1.09 1.0 0.038 2.93 45.31 0.088 3.23 2.39 2 8.51 500 1.8E-03 4.6E+02 3.3E-04 10 0.228 6719 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.28% 0.0037
17.224 5592.41 11.3 0.052 11.2 22.1 9.56 0.46%Sand-Slime Tailing 0.059 119.0 0.98 0.41 0.57 1 1.38 15.417 214.30 18.13 18 0.50% 2.4 47% 1.58 0.00 1.58 0 0.90 0.05 0.97 1.0 0.050 36.66 54.79 0.082 1.63 0.93 0.25 0.80 1.09 1.0 0.038 2.30 41.65 0.085 3.09 2.36 2 8.56 500 1.8E-03 4.6E+02 3.3E-04 10 0.228 6701 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.31% 0.0038
P = γeff*(Geff
/Gmax)
(tsf)
Volumetric Strain for Design Event, εv (%)
Incrementa
l Consolidation (ft)
CN
Volumetric
Strain for
Design
Event, εv (%)
Incremental Consolidation (ft)
TOTAL SEISMIC SETTLEMENT (FT):
Midpoint Depth at t1, z1
Shear Wave Velocity, Vs
Soil Density, ρ (tcf)b
Threshhol
d Shear Strain, γtv
(%)
Volumetri
c Strain at
15 Cycles,
εc-15 (%)Rc
Plasticity Index, PI g1 g2
Shear Strain, γ (%)a
Effective Stress at Bottom of Layer
Effective Stress at Midpoint of Layer FINAL COVER
Erosion Protection Layer
Water Storage/Rooting Zone Layer
qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Equil Pore Pressure at Midpoint of Layer (tsf)
Max Shear
Strain
Modulus,
Gmax (tsf)
Unit Weight (tcf)
Unit Weight (pcf)
Total Stress at Bottom of Layer
Total Stress at Midpoint of Layer
Equil Pore Pressure at Bottom of Layer
Cyclic Resistance Ratio
FoS
Cyclic Stress Ratio
FoS
∆qc1n qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Threshhol
d Shear
Strain, γtv (%)
Volumetric Strain at 15 Cycles, εc-15 (%)RcCNg1g2
Shear
Strain, γ ab
Seismic Settlement Analysis - Stewart et al (2004)
Shear Wave Velocity, Vs
High Compaction Layer
Platform/Random Fill Layer
Pw (u2)Pw (u2)
2013 CPT Data from ConeTec CPT Data Interpretations
fs/qt
Material
Type (as determined by fines
Unit Weight Unit Weight
Total
Stress
at time of CPT
Depth
at time of CPT Elevation qt fs qc
Effective
Stress at
time of CPT
Saturated
at time of CPT
Type Index,
Ic FC
Youd, et al (2001)
Max. Horiz. Acceleration, Amax/g: 0.15
Earthquake Moment Magnitude, M:
Idriss and Boulanger (2008)
Max. Horiz. Acceleration, Amax/g:
Earthquake Moment Magnitude, M:
Magnitude Scaling Factor, MSF:
WHITE MESA TAILINGS REPOSITORY LIQUEFACTION AND SEISMIC SETTLEMENT ANALYSES - 3-3S Elev. at Top of Layer (ft)
Elev. At Midpoint of Layer (ft)
Elev. At Bottom of Layer
Thickness of Layer (ft)
5.5
Magnitude Scaling Factor, MSF:
Equil
Pore
Pressure at time of
Conditions at t1 Liquefaction Triggering AnalysesEquil
Pore Pressure at t1CN qc1 qc1 qc1N
Normalized
Cone
Penetration Resistance, Qt
Normalize
d Friction
Ratio, Fr (%)
Total Stress at t1 Liquefiable?1=Yes
2=No
Cyclic Stress RatioEffective Stress at t1
Saturated at t1
Idriss & Boulanger (2008)
CSR
M=7.5,
s'v=1atm
Kc
Scaling Factor for stress ration, rm
Volumetric Strain Ratio for Site-Specific Design Eart
Equiv. Number of Uniform Strain Cycles, N
Youd et al. (2001)
CSR
M=7.5,
s'v=1atm
Depth at t1, z1
Soil Density, ρ
Maximum Shear Strain
Modulus,
Gmax
P =
γeff*(Geff/Gmax)
Plastici
ty Index, PI
Liquef_SeismicSettle_30Aug2015.xls Page 22 of 29
Energy Fuels Resources (USA) Inc.White Mesa Mill
Seismic Settlement Analyses
Data File: 13-52106_SP3-3S-BSC-CPT 5605.60 Water surface elevation during CPT investigation (ft 5609.63 Ground Surface Elevation at time of CPT (ft amsl)
Location: White Mesa 2013 CPT Investigation 0.15 5601.35 Water surface elevation at t0 (ft amsl)5620.49 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl)
..\..\..\6.2.3 Field Data\2013 Field Investigation\Conetec Data 5.5 5582.14 Water surface elevation at t1 (ft amsl) 0.50 Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after pla ###### 5620.24 5619.99 0.50 0.055 110 0.028 0.014 0.00 0.00 0.028 0.014 0.08 508 1.7E-03 4.4E+02 3.0E-06 11 0.068 46696 0.00% 1.20 0.80 0.04% 0.000 0.32 0.133 0.778 0.00% 0.0000
Tailings Sands 1.69 5577.14 Water surface elevation at t2 (ft amsl)3.50 Thickness of Water Storage/Rooting Zone (ft)###### 5618.24 5616.49 3.50 0.054 107 0.215 0.121 0.00 0.00 0.215 0.121 0.69 508 1.7E-03 4.3E+02 2.8E-05 11 0.118 18930 0.00% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
Tailings Sand-Slimes 3.50 Thickness of High Compaction Layer (ft)###### 5614.74 5612.99 3.50 0.060 120 0.424 0.320 0.00 0.00 0.424 0.320 1.75 508 1.9E-03 4.8E+02 6.5E-05 11 0.152 12657 0.01% 0.65 0.75 0.02% 0.000 0.34 0.079 0.765 0.00% 0.0000
Tailings Slimes 1.44 3.36 Thickness of Random/Platform Fill on on top of existing interim cover (ft) ###### 5611.31 5609.63 3.36 0.050 101 0.593 0.509 0.00 0.00 0.593 0.509 2.80 508 1.6E-03 4.0E+02 1.2E-04 11 0.171 10433 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
Interim Cover 0.47 1184.24 Additional Stress due to Final Cover Placement, ΔσFC (psf)
Cells Requiring User Input/Manipulation 2.21 2.21 7.51 5577.14 Elevation of bottom of tailings (liner) (ft amsl)
0.414
rd Cσ Kσ Ka rd Dr f Kσ Ka Avg
(ft) (ft amsl) TSF TSF TSF (ft) PSI (%) (tcf) (pcf) (tsf)(tsf)(tsf) 1=Yes TSF MPa % (tsf)(tsf)(tsf) 1=Yes FoS m
0=No 0=No (ft/sec) (tcf) tsf tsf (%)
P = γeff*(Geff
/Gmax)
(tsf)
Volumetric Strain for Design Event, εv (%)
Incrementa
l Consolidation (ft)
CN
Volumetric
Strain for
Design
Event, εv (%)
Incremental Consolidation (ft)
TOTAL SEISMIC SETTLEMENT (FT):
Midpoint Depth at t1, z1
Shear Wave Velocity, Vs
Soil Density, ρ (tcf)b
Threshhol
d Shear Strain, γtv
(%)
Volumetri
c Strain at
15 Cycles,
εc-15 (%)Rc
Plasticity Index, PI g1 g2
Shear Strain, γ (%)a
Effective Stress at Bottom of Layer
Effective Stress at Midpoint of Layer FINAL COVER
Erosion Protection Layer
Water Storage/Rooting Zone Layer
qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Equil Pore Pressure at Midpoint of Layer (tsf)
Max Shear
Strain
Modulus,
Gmax (tsf)
Unit Weight (tcf)
Unit Weight (pcf)
Total Stress at Bottom of Layer
Total Stress at Midpoint of Layer
Equil Pore Pressure at Bottom of Layer
Cyclic Resistance Ratio
FoS
Cyclic Stress Ratio
FoS
∆qc1n qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Threshhol
d Shear
Strain, γtv (%)
Volumetric Strain at 15 Cycles, εc-15 (%)RcCNg1g2
Shear
Strain, γ ab
Seismic Settlement Analysis - Stewart et al (2004)
Shear Wave Velocity, Vs
High Compaction Layer
Platform/Random Fill Layer
Pw (u2)Pw (u2)
2013 CPT Data from ConeTec CPT Data Interpretations
fs/qt
Material
Type (as determined by fines
Unit Weight Unit Weight
Total
Stress
at time of CPT
Depth
at time of CPT Elevation qt fs qc
Effective
Stress at
time of CPT
Saturated
at time of CPT
Type Index,
Ic FC
Youd, et al (2001)
Max. Horiz. Acceleration, Amax/g: 0.15
Earthquake Moment Magnitude, M:
Idriss and Boulanger (2008)
Max. Horiz. Acceleration, Amax/g:
Earthquake Moment Magnitude, M:
Magnitude Scaling Factor, MSF:
WHITE MESA TAILINGS REPOSITORY LIQUEFACTION AND SEISMIC SETTLEMENT ANALYSES - 3-3S Elev. at Top of Layer (ft)
Elev. At Midpoint of Layer (ft)
Elev. At Bottom of Layer
Thickness of Layer (ft)
5.5
Magnitude Scaling Factor, MSF:
Equil
Pore
Pressure at time of
Conditions at t1 Liquefaction Triggering AnalysesEquil
Pore Pressure at t1CN qc1 qc1 qc1N
Normalized
Cone
Penetration Resistance, Qt
Normalize
d Friction
Ratio, Fr (%)
Total Stress at t1 Liquefiable?1=Yes
2=No
Cyclic Stress RatioEffective Stress at t1
Saturated at t1
Idriss & Boulanger (2008)
CSR
M=7.5,
s'v=1atm
Kc
Scaling Factor for stress ration, rm
Volumetric Strain Ratio for Site-Specific Design Eart
Equiv. Number of Uniform Strain Cycles, N
Youd et al. (2001)
CSR
M=7.5,
s'v=1atm
Depth at t1, z1
Soil Density, ρ
Maximum Shear Strain
Modulus,
Gmax
P =
γeff*(Geff/Gmax)
Plastici
ty Index, PI
17.388 5592.24 12.6 0.071 12.4 21.2 9.17 0.57%Sand-Slime Tailing 0.059 119.0 0.99 0.42 0.58 1 1.37 16.989 236.15 19.94 20 0.61% 2.4 47% 1.59 0.00 1.59 0 0.90 0.05 0.97 1.0 0.050 37.30 57.24 0.085 1.69 0.93 0.26 0.80 1.08 1.0 0.038 2.28 45.39 0.088 3.18 2.44 2 8.61 500 1.8E-03 4.6E+02 3.3E-04 10 0.228 6684 0.09% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.34% 0.0038
17.552 5592.08 13.7 0.092 13.6 19.3 8.35 0.67%Sand-Slime Tailing 0.059 119.0 1.00 0.42 0.58 1 1.36 18.404 255.82 21.57 22 0.73% 2.4 47% 1.60 0.00 1.60 0 0.90 0.05 0.97 1.0 0.050 37.86 59.43 0.087 1.74 0.93 0.27 0.80 1.08 1.0 0.038 2.27 48.98 0.091 3.27 2.50 2 8.66 500 1.8E-03 4.6E+02 3.4E-04 10 0.229 6667 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.37% 0.0039
17.716 5591.91 13.7 0.124 13.6 19.8 8.56 0.91%Sand-Slime Tailing 0.059 119.0 1.01 0.43 0.59 1 1.35 18.297 254.32 21.44 22 0.98% 2.5 47% 1.61 0.00 1.61 0 0.89 0.05 0.97 1.0 0.050 37.82 59.27 0.087 1.74 0.93 0.27 0.80 1.08 1.0 0.038 2.55 54.65 0.095 3.40 2.57 2 8.71 500 1.8E-03 4.6E+02 3.4E-04 10 0.229 6650 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.40% 0.0039
17.880 5591.75 11.4 0.157 11.3 19.8 8.58 1.38%Sand-Slime Tailing 0.059 119.0 1.02 0.43 0.59 1 1.34 15.145 210.51 17.78 18 1.51% 2.6 47% 1.61 0.00 1.61 0 0.89 0.05 0.97 1.0 0.050 36.54 54.32 0.082 1.64 0.93 0.24 0.80 1.08 1.0 0.038 3.51 62.37 0.103 3.63 2.64 2 8.76 500 1.8E-03 4.6E+02 3.4E-04 10 0.229 6634 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.43% 0.0040
18.044 5591.59 10.6 0.162 10.5 21.3 9.25 1.52%Sand-Slime Tailing 0.059 119.0 1.03 0.44 0.60 1 1.33 14.025 194.94 16.50 16 1.69% 2.7 47% 1.62 0.00 1.62 0 0.89 0.05 0.97 1.0 0.050 36.09 52.58 0.080 1.60 0.93 0.23 0.80 1.08 1.0 0.038 3.89 64.15 0.105 3.68 2.64 2 8.81 500 1.8E-03 4.6E+02 3.4E-04 10 0.230 6617 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.46% 0.0040
18.208 5591.42 9.0 0.183 8.9 21.8 9.45 2.03%Slime Tailings 0.057 113.1 1.04 0.44 0.60 1 1.33 11.759 163.45 13.87 13 2.30% 2.8 71% 1.63 0.00 1.63 0 0.89 0.05 0.97 1.0 0.050 34.92 48.78 0.076 1.53 0.93 0.21 0.80 1.08 1.0 0.038 5.05 70.01 0.112 3.91 2.72 2 8.86 500 1.8E-03 4.4E+02 3.6E-04 16 0.481 5442 0.11% 2.00 0.65 0.03% 0.019 0.34 0.079 0.765 2.95% 0.0048
18.372 5591.26 8.4 0.100 8.2 27.4 11.89 1.19%Sand-Slime Tailing 0.059 119.0 1.05 0.45 0.60 1 1.32 10.844 150.73 12.86 12 1.36% 2.7 47% 1.64 0.00 1.64 0 0.89 0.05 0.97 1.0 0.050 34.81 47.67 0.075 1.51 0.93 0.21 0.80 1.07 1.0 0.038 4.32 55.55 0.096 3.33 2.42 2 8.91 500 1.8E-03 4.6E+02 3.5E-04 10 0.231 6585 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.52% 0.0041
18.537 5591.09 13.5 0.095 13.4 21.3 9.22 0.70%Sand-Slime Tailing 0.059 119.0 1.06 0.45 0.61 1 1.31 17.559 244.07 20.60 20 0.76% 2.4 47% 1.65 0.00 1.65 0 0.89 0.05 0.97 1.0 0.050 37.52 58.12 0.086 1.73 0.93 0.26 0.80 1.07 1.0 0.038 2.41 49.69 0.091 3.15 2.44 2 8.96 500 1.8E-03 4.6E+02 3.5E-04 10 0.231 6569 0.09% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.55% 0.0042
18.701 5590.93 10.1 0.120 10.0 17.8 7.69 1.19%Sand-Slime Tailing 0.059 119.0 1.07 0.46 0.61 1 1.30 12.971 180.29 15.23 15 1.33% 2.7 47% 1.66 0.00 1.66 0 0.89 0.05 0.97 1.0 0.050 35.64 50.88 0.078 1.58 0.93 0.23 0.80 1.07 1.0 0.038 3.77 57.42 0.098 3.34 2.46 2 9.01 500 1.8E-03 4.6E+02 3.5E-04 10 0.231 6553 0.09% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.58% 0.0042
18.865 5590.77 9.9 0.116 9.8 18.7 8.10 1.17%Sand-Slime Tailing 0.059 119.0 1.08 0.46 0.62 1 1.30 12.648 175.81 14.87 14 1.32% 2.7 47% 1.67 0.00 1.67 0 0.89 0.05 0.97 1.0 0.050 35.52 50.38 0.078 1.57 0.93 0.22 0.80 1.07 1.0 0.038 3.83 56.90 0.097 3.30 2.44 2 9.06 500 1.8E-03 4.6E+02 3.5E-04 10 0.232 6537 0.10% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.61% 0.0043
19.029 5590.60 14.0 0.163 13.9 13.3 5.75 1.17%Sand-Slime Tailing 0.059 119.0 1.09 0.47 0.62 1 1.29 17.870 248.39 20.88 21 1.27% 2.5 47% 1.68 0.00 1.68 0 0.88 0.05 0.96 1.0 0.049 37.62 58.50 0.086 1.75 0.93 0.26 0.80 1.07 1.0 0.038 2.92 60.91 0.101 3.41 2.58 2 9.11 500 1.8E-03 4.6E+02 3.6E-04 10 0.232 6521 0.10% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.64% 0.0043
19.193 5590.44 13.6 0.284 13.5 11.7 5.08 2.09%Sand-Slime Tailing 0.059 119.0 1.10 0.47 0.63 1 1.28 17.279 240.18 20.18 20 2.28% 2.7 47% 1.69 0.00 1.69 0 0.88 0.05 0.96 1.0 0.049 37.38 57.56 0.085 1.73 0.93 0.26 0.80 1.07 1.0 0.038 3.88 78.37 0.125 4.18 2.96 2 9.16 500 1.8E-03 4.6E+02 3.6E-04 10 0.232 6506 0.10% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.67% 0.0044
19.357 5590.27 10.2 0.200 10.1 14.7 6.36 1.96%Slime Tailings 0.057 113.1 1.11 0.48 0.63 1 1.27 12.883 179.08 15.10 14 2.20% 2.8 71% 1.70 0.00 1.70 0 0.88 0.05 0.97 1.0 0.049 35.35 50.44 0.078 1.58 0.93 0.22 0.80 1.06 1.0 0.038 4.70 70.98 0.113 3.77 2.68 2 9.21 500 1.8E-03 4.4E+02 3.8E-04 16 0.484 5351 0.12% 2.00 0.65 0.03% 0.021 0.34 0.079 0.765 3.17% 0.0052
19.521 5590.11 17.8 0.357 17.7 18.6 8.07 2.00%Sand-Slime Tailing 0.059 119.0 1.12 0.48 0.64 1 1.25 22.210 308.72 25.96 26 2.14% 2.6 47% 1.71 0.00 1.71 0 0.88 0.06 0.96 1.0 0.049 39.41 65.37 0.094 1.92 0.93 0.29 0.80 1.06 1.0 0.038 3.15 81.85 0.131 4.34 3.13 2 9.26 500 1.8E-03 4.6E+02 3.6E-04 10 0.233 6476 0.10% 2.00 0.65 0.03% 0.018 0.34 0.079 0.765 2.73% 0.0045
19.685 5589.95 22.3 0.302 22.2 25.3 10.96 1.35%Sand-Slime Tailing 0.059 119.0 1.13 0.49 0.64 1 1.24 27.383 380.62 32.03 33 1.43% 2.4 47% 1.72 0.00 1.72 0 0.88 0.06 0.96 1.0 0.049 41.53 73.56 0.104 2.14 0.93 0.33 0.80 1.06 1.0 0.038 2.26 72.25 0.115 3.79 2.96 2 9.31 538 1.8E-03 5.3E+02 3.1E-04 10 0.233 6460 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.91% 0.0031
19.849 5589.78 22.1 0.259 21.8 57.2 24.79 1.17%Sand-Slime Tailing 0.059 119.0 1.14 0.49 0.65 1 1.23 26.790 372.39 31.63 33 1.23% 2.4 47% 1.73 0.00 1.73 0 0.88 0.06 0.96 1.0 0.049 41.39 73.02 0.103 2.13 0.92 0.32 0.80 1.06 1.0 0.038 2.14 67.74 0.109 3.57 2.85 2 9.36 538 1.8E-03 5.3E+02 3.2E-04 10 0.234 6445 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.93% 0.0032
20.013 5589.62 20.9 0.204 20.3 100.3 43.47 0.98%Sand-Slime Tailing 0.059 119.0 1.15 0.50 0.65 1 1.23 24.850 345.41 29.75 30 1.03% 2.3 47% 1.74 0.00 1.74 0 0.88 0.06 0.96 1.0 0.049 40.74 70.49 0.100 2.06 0.92 0.31 0.80 1.06 1.0 0.038 2.08 62.00 0.102 3.33 2.69 2 9.41 538 1.8E-03 5.3E+02 3.2E-04 10 0.234 6430 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.95% 0.0032
20.177 5589.45 18.6 0.237 17.7 151.5 65.65 1.27%Sand-Slime Tailing 0.059 119.0 1.16 0.50 0.65 1 1.23 21.715 301.84 26.57 27 1.36% 2.5 47% 1.75 0.00 1.75 0 0.87 0.06 0.96 1.0 0.049 39.62 66.19 0.095 1.96 0.92 0.30 0.80 1.06 1.0 0.038 2.53 67.18 0.108 3.50 2.73 2 9.46 538 1.8E-03 5.3E+02 3.2E-04 10 0.234 6415 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.98% 0.0032
20.341 5589.29 19.8 0.274 18.9 136.1 58.99 1.39%Sand-Slime Tailing 0.059 119.0 1.17 0.51 0.66 1 1.22 23.028 320.09 27.95 28 1.47% 2.5 47% 1.76 0.00 1.76 0 0.87 0.06 0.96 1.0 0.048 40.10 68.05 0.097 2.01 0.92 0.31 0.80 1.05 1.0 0.038 2.53 70.78 0.113 3.64 2.82 2 9.51 538 1.8E-03 5.3E+02 3.2E-04 10 0.235 6401 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 2.00% 0.0033
20.505 5589.13 25.1 0.237 24.5 96.6 41.86 0.95%Sand-Slime Tailing 0.059 119.0 1.18 0.51 0.66 1 1.20 29.354 408.02 34.93 36 0.99% 2.3 47% 1.77 0.00 1.77 0 0.87 0.06 0.96 1.0 0.048 42.55 77.49 0.109 2.27 0.92 0.34 0.80 1.05 1.0 0.038 1.85 64.63 0.105 3.36 2.82 2 9.56 538 1.8E-03 5.3E+02 3.2E-04 10 0.235 6386 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 2.02% 0.0033
20.669 5588.96 31.4 0.092 31.0 58.2 25.23 0.29%Sand Tailings 0.062 123.5 1.19 0.52 0.67 1 1.18 36.693 510.03 43.12 45 0.30% 1.9 18% 1.78 0.00 1.78 0 0.87 0.07 0.95 1.0 0.048 33.11 76.23 0.108 2.25 0.92 0.38 0.80 1.05 1.0 0.038 1.24 53.32 0.094 2.99 2.62 2 9.61 538 1.9E-03 5.5E+02 3.1E-04 0 0.235 8055 0.10% 2.20 1.00 0.03%0.002 0.34 0.079 0.765 0.23% 0.0004
20.833 5588.80 32.9 0.194 32.7 35.6 15.43 0.59%Sand Tailings 0.062 123.5 1.20 0.52 0.67 1 1.17 38.397 533.72 44.90 47 0.61% 2.1 18% 1.79 0.00 1.79 0 0.87 0.07 0.95 1.0 0.048 33.57 78.47 0.111 2.31 0.92 0.39 0.80 1.05 1.0 0.038 1.39 62.28 0.102 3.24 2.78 2 9.66 538 1.9E-03 5.5E+02 3.1E-04 0 0.236 8037 0.10% 2.20 1.00 0.03%0.002 0.34 0.079 0.765 0.24% 0.0004
20.997 5588.63 22.6 0.202 22.3 42.9 18.60 0.90%Sand-Slime Tailing 0.059 119.0 1.21 0.53 0.68 1 1.19 26.475 368.01 31.12 31 0.95% 2.3 47% 1.80 0.00 1.80 0 0.87 0.06 0.96 1.0 0.048 41.22 72.33 0.103 2.14 0.91 0.32 0.80 1.05 1.0 0.038 1.97 61.27 0.101 3.19 2.66 2 9.71 538 1.8E-03 5.3E+02 3.3E-04 10 0.236 6342 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.09% 0.0034
21.161 5588.47 21.0 0.114 20.8 20.1 8.70 0.54%Sand-Slime Tailing 0.059 119.0 1.22 0.53 0.68 1 1.18 24.679 343.04 28.84 29 0.58% 2.2 47% 1.81 0.00 1.81 0 0.87 0.06 0.96 1.0 0.048 40.41 69.25 0.099 2.06 0.91 0.31 0.80 1.05 1.0 0.038 1.76 50.76 0.092 2.88 2.47 2 9.76 538 1.8E-03 5.3E+02 3.3E-04 10 0.236 6327 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.12% 0.0035
21.325 5588.30 21.1 0.201 20.9 37.0 16.04 0.95%Sand-Slime Tailing 0.059 119.0 1.23 0.54 0.69 1 1.18 24.625 342.29 28.92 29 1.01% 2.4 47% 1.82 0.00 1.82 0 0.87 0.06 0.96 1.0 0.048 40.44 69.36 0.099 2.06 0.91 0.31 0.80 1.05 1.0 0.038 2.13 61.57 0.102 3.17 2.62 2 9.81 538 1.8E-03 5.3E+02 3.3E-04 10 0.237 6313 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.14% 0.0035
21.489 5588.14 22.3 0.267 21.9 66.8 28.93 1.20%Sand-Slime Tailing 0.059 119.0 1.24 0.54 0.69 1 1.17 25.657 356.63 30.37 30 1.27% 2.4 47% 1.83 0.00 1.83 0 0.86 0.06 0.96 1.0 0.048 40.95 71.32 0.101 2.12 0.91 0.32 0.80 1.04 1.0 0.038 2.26 68.55 0.110 3.40 2.76 2 9.86 538 1.8E-03 5.3E+02 3.3E-04 10 0.237 6299 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.16% 0.0036
21.653 5587.98 18.5 0.419 18.0 91.4 39.59 2.26%Sand-Slime Tailing 0.059 119.0 1.25 0.55 0.70 1 1.17 21.059 292.72 25.24 25 2.42% 2.6 47% 1.84 0.00 1.84 0 0.86 0.06 0.96 1.0 0.048 39.15 64.39 0.093 1.94 0.91 0.29 0.80 1.04 1.0 0.038 3.47 87.68 0.143 4.39 3.17 2 9.91 538 1.8E-03 5.3E+02 3.4E-04 10 0.237 6285 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.19% 0.0036
21.817 5587.81 22.9 0.248 22.0 149.4 64.72 1.08%Sand-Slime Tailing 0.059 119.0 1.26 0.55 0.70 1 1.16 25.478 354.15 30.85 31 1.15% 2.4 47% 1.85 0.00 1.85 0 0.86 0.06 0.95 1.0 0.048 41.12 71.97 0.102 2.15 0.91 0.32 0.80 1.04 1.0 0.038 2.15 66.25 0.107 3.28 2.71 2 9.96 538 1.8E-03 5.3E+02 3.4E-04 10 0.238 6272 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.21% 0.0036
21.981 5587.65 28.4 0.235 27.8 83.5 36.19 0.83%Sand-Slime Tailing 0.059 119.0 1.27 0.56 0.71 1 1.15 31.904 443.46 37.75 38 0.87% 2.2 47% 1.86 0.00 1.86 0 0.86 0.06 0.95 1.0 0.047 43.54 81.29 0.114 2.42 0.91 0.35 0.80 1.04 1.0 0.038 1.70 64.18 0.105 3.19 2.80 2 10.01 538 1.8E-03 5.3E+02 3.4E-04 10 0.238 6258 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.23% 0.0037
22.145 5587.48 22.2 0.322 21.0 195.5 84.71 1.45%Sand-Slime Tailing 0.059 119.0 1.28 0.57 0.71 1 1.15 24.097 334.94 29.62 29 1.54% 2.4 47% 1.87 0.00 1.87 0 0.86 0.06 0.95 1.0 0.047 40.69 70.30 0.100 2.11 0.91 0.31 0.80 1.04 1.0 0.038 2.51 74.48 0.118 3.59 2.85 2 10.06 538 1.8E-03 5.3E+02 3.4E-04 10 0.238 6244 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.26% 0.0037
22.309 5587.32 25.0 0.216 23.6 231.9 100.47 0.86%Sand-Slime Tailing 0.059 119.0 1.29 0.57 0.72 1 1.14 26.878 373.60 33.13 33 0.91% 2.3 47% 1.88 0.00 1.88 0 0.86 0.06 0.95 1.0 0.047 41.92 75.06 0.106 2.25 0.90 0.33 0.80 1.04 1.0 0.038 1.88 62.32 0.103 3.09 2.67 2 10.11 538 1.8E-03 5.3E+02 3.4E-04 10 0.238 6231 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.28% 0.0037
22.473 5587.16 25.7 0.237 24.6 172.5 74.75 0.92%Sand-Slime Tailing 0.059 119.0 1.30 0.58 0.72 1 1.13 27.896 387.75 33.82 34 0.97% 2.3 47% 1.89 0.00 1.89 0 0.86 0.06 0.95 1.0 0.047 42.16 75.98 0.107 2.28 0.90 0.34 0.80 1.04 1.0 0.038 1.90 64.40 0.105 3.15 2.71 2 10.16 538 1.8E-03 5.3E+02 3.4E-04 10 0.239 6218 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.30% 0.0038
22.638 5586.99 25.4 0.261 24.2 200.2 86.77 1.03%Sand-Slime Tailing 0.059 119.0 1.31 0.58 0.72 1 1.13 27.284 379.24 33.33 33 1.08% 2.3 47% 1.90 0.00 1.90 0 0.85 0.06 0.95 1.0 0.047 41.99 75.32 0.106 2.26 0.90 0.33 0.80 1.03 1.0 0.038 2.01 66.86 0.108 3.22 2.74 2 10.21 538 1.8E-03 5.3E+02 3.5E-04 10 0.239 6204 0.09% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.33% 0.0038
22.802 5586.83 25.6 0.229 24.5 184.7 80.05 0.89%Sand-Slime Tailing 0.059 119.0 1.32 0.59 0.73 1 1.12 27.506 382.34 33.45 33 0.94% 2.3 47% 1.91 0.00 1.91 0 0.85 0.06 0.95 1.0 0.047 42.03 75.49 0.107 2.27 0.90 0.33 0.80 1.03 1.0 0.038 1.90 63.56 0.104 3.09 2.68 2 10.26 538 1.8E-03 5.3E+02 3.5E-04 10 0.239 6191 0.09% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.35% 0.0039
22.966 5586.66 28.5 0.145 27.4 181.5 78.63 0.51%Sand-Slime Tailing 0.059 119.0 1.33 0.59 0.73 1 1.12 30.592 425.22 37.00 37 0.53% 2.1 47% 1.92 0.00 1.92 0 0.85 0.06 0.95 1.0 0.047 43.28 80.28 0.113 2.42 0.90 0.35 0.80 1.03 1.0 0.038 1.50 55.48 0.096 2.84 2.63 2 10.31 538 1.8E-03 5.3E+02 3.5E-04 10 0.240 6178 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.38% 0.0039
23.130 5586.50 30.4 0.223 29.5 150.3 65.13 0.73%Sand-Slime Tailing 0.059 119.0 1.33 0.60 0.74 1 1.11 32.742 455.12 39.24 39 0.77% 2.2 47% 1.93 0.00 1.93 0 0.85 0.06 0.95 1.0 0.047 44.06 83.30 0.117 2.51 0.90 0.36 0.80 1.03 1.0 0.038 1.61 63.15 0.103 3.05 2.78 2 10.36 538 1.8E-03 5.3E+02 3.5E-04 10 0.240 6165 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.40% 0.0039
23.294 5586.34 35.2 0.314 34.0 190.1 82.37 0.89%Sand-Slime Tailing 0.059 119.0 1.34 0.60 0.74 1 1.10 37.465 520.76 45.03 46 0.93% 2.2 47% 1.94 0.00 1.94 0 0.85 0.07 0.94 1.0 0.046 46.09 91.13 0.129 2.77 0.90 0.39 0.80 1.03 1.0 0.038 1.59 71.48 0.114 3.34 3.06 2 10.41 538 1.8E-03 5.3E+02 3.5E-04 10 0.240 6152 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.42% 0.0040
23.458 5586.17 38.3 0.271 37.3 170.9 74.04 0.71%Sand Tailings 0.062 123.5 1.35 0.61 0.75 1 1.09 40.792 567.01 48.73 49 0.73% 2.1 18% 1.95 0.00 1.95 0 0.85 0.07 0.94 1.0 0.046 34.55 83.28 0.117 2.54 0.89 0.40 0.80 1.03 1.0 0.038 1.42 69.29 0.111 3.23 2.88 2 10.46 538 1.9E-03 5.5E+02 3.4E-04 0 0.240 7765 0.12% 2.20 1.00 0.03% 0.002 0.34 0.079 0.765 0.31% 0.0005
23.622 5586.01 38.4 0.271 37.3 171.7 74.40 0.71%Sand Tailings 0.062 123.5 1.36 0.61 0.75 1 1.09 40.621 564.64 48.54 49 0.73% 2.1 18% 1.96 0.00 1.96 0 0.85 0.07 0.94 1.0 0.046 34.50 83.03 0.117 2.53 0.89 0.40 0.80 1.03 1.0 0.038 1.43 69.22 0.111 3.22 2.87 2 10.51 538 1.9E-03 5.5E+02 3.4E-04 0 0.241 7749 0.12% 2.20 1.00 0.03% 0.002 0.34 0.079 0.765 0.31% 0.0005
23.786 5585.84 41.4 0.271 40.3 174.7 75.68 0.66%Sand Tailings 0.062 123.5 1.37 0.62 0.76 1 1.08 43.621 606.34 52.04 53 0.68% 2.0 18% 1.97 0.00 1.97 0 0.85 0.07 0.94 1.0 0.046 35.39 87.43 0.123 2.68 0.89 0.42 0.79 1.03 1.0 0.038 1.36 70.53 0.113 3.25 2.96 2 10.56 538 1.9E-03 5.5E+02 3.5E-04 0 0.241 7732 0.12% 2.20 1.00 0.03% 0.002 0.34 0.079 0.765 0.32% 0.0005
32.490 5577.14 Sand Tailings 0.062 123.5 2.50 0.02 2.48 1 13.21 594 1.9E-03 6.8E+02 3.6E-04 0 0.254 7027 0.12%5.00 1.00 0.03% 0.005 0.34 0.079 0.765 0.70% 0.0607
Extra layer added to analyze seismic settlement of tailings below the bottom of CPT investigation.
Liquef_SeismicSettle_30Aug2015.xls Page 23 of 29
Energy Fuels Resources (USA) Inc.White Mesa Mill
Seismic Settlement Analyses
Data File: 13-52106_SP3-4N-BSC-CPT 5606.00 Water surface elevation during CPT investigation (ft 5608.70 Ground Surface Elevation at time of CPT (ft amsl)
Location: White Mesa 2013 CPT Investigation 0.15 5600.42 Water surface elevation at t0 (ft amsl)5623.35 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl)
..\..\..\6.2.3 Field Data\2013 Field Investigation\Conetec Dat 5.5 5583.71 Water surface elevation at t1 (ft amsl) 0.50 Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after pla ###### 5623.1 5622.85 0.50 0.055 110 0.028 0.014 0.00 0.00 0.028 0.014 0.08 508 1.7E-03 4.4E+02 3.0E-06 11 0.068 46696 0.00% 1.20 0.80 0.04% 0.000 0.32 0.133 0.778 0.00% 0.0000
Tailings Sands 1.69 5578.71 Water surface elevation at t2 (ft amsl)3.50 Thickness of Water Storage/Rooting Zone (ft)###### 5621.1 5619.35 3.50 0.054 107 0.215 0.121 0.00 0.00 0.215 0.121 0.69 508 1.7E-03 4.3E+02 2.8E-05 11 0.118 18930 0.00% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
Tailings Sand-Slimes 3.50 Thickness of High Compaction Layer (ft)###### 5617.6 5615.85 3.50 0.060 120 0.424 0.320 0.00 0.00 0.424 0.320 1.75 508 1.9E-03 4.8E+02 6.5E-05 11 0.152 12657 0.01% 0.65 0.75 0.02% 0.000 0.34 0.079 0.765 0.00% 0.0000
Tailings Slimes 1.44 7.15 Thickness of Random/Platform Fill on on top of existing interim cover (ft) ###### 5612.28 5608.70 7.15 0.050 101 0.784 0.604 0.00 0.00 0.784 0.604 3.38 508 1.6E-03 4.0E+02 1.5E-04 11 0.178 9715 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
Interim Cover 0.47 1565.99 Additional Stress due to Final Cover Placement, ΔσFC (psf)
Cells Requiring User Input/Manipulation 2.21 2.21 7.51 5578.71 Elevation of bottom of tailings (liner) (ft amsl)
0.623
rd Cσ Kσ Ka rd Dr f Kσ Ka Avg
(ft) (ft amsl) TSF TSF TSF (ft) PSI (%) (tcf) (pcf) (tsf)(tsf)(tsf) 1=Yes TSF MPa % (tsf)(tsf)(tsf) 1=Yes FoS m
0=No 0=No (ft/sec) (tcf) tsf tsf (%)
0.164 5608.54 29.3 0.127 29.3 1.0 0.44 0.43%Interim Cover 0.050 100.7 0.01 0.00 0.01 0 1.70 49.810 692.36 57.86 3546 0.43% 0.9 51% 0.79 0.00 0.79 0 1.00 0.08 1.01 1.0 0.058 50.63 108.49 0.157 2.70 0.97 0.44 0.78 2.77 1.0 0.015 1.00 57.86 0.098 239.99 121.34 2 4.52 594 1.6E-03 5.5E+02 1.4E-04 11 0.191 8685 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
0.328 5608.37 57.0 0.266 57.0 1.3 0.55 0.47%Interim Cover 0.050 100.7 0.02 0.00 0.02 0 1.70 96.951 1347.62 112.62 3451 0.47% 0.9 51% 0.80 0.00 0.80 0 1.00 0.12 1.01 1.0 0.058 69.84 182.46 0.578 9.92 0.97 0.61 0.69 3.36 1.0 0.013 1.00 112.62 0.213 260.65 135.29 2 4.57 594 1.6E-03 5.5E+02 1.4E-04 11 0.192 8648 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
0.492 5608.21 65.8 0.294 65.8 3.7 1.58 0.45%Interim Cover 0.050 100.7 0.02 0.00 0.02 0 1.70 111.894 1555.33 130.00 2656 0.45% 0.9 51% 0.81 0.00 0.81 0 1.00 0.14 1.01 1.0 0.058 75.94 205.95 1.000 17.15 0.96 0.66 0.67 3.21 1.0 0.013 1.00 130.00 0.284 232.24 124.69 2 4.62 594 1.6E-03 5.5E+02 1.4E-04 11 0.192 8611 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
0.656 5608.04 65.5 0.343 65.4 1.6 0.71 0.52%Interim Cover 0.050 100.7 0.03 0.00 0.03 0 1.70 111.248 1546.35 129.23 1980 0.52% 1.0 51% 0.82 0.00 0.82 0 1.00 0.13 1.01 1.0 0.058 75.67 204.90 1.000 17.17 0.96 0.66 0.67 2.92 1.0 0.015 1.00 129.23 0.281 172.02 94.60 2 4.67 594 1.6E-03 5.5E+02 1.4E-04 11 0.193 8575 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
0.820 5607.88 64.9 0.350 64.9 2.1 0.89 0.54%Interim Cover 0.050 100.7 0.04 0.00 0.04 0 1.70 110.279 1532.88 128.11 1570 0.54% 1.0 51% 0.82 0.00 0.82 0 1.00 0.13 1.01 1.0 0.058 75.28 203.39 1.000 17.20 0.96 0.65 0.67 2.70 1.0 0.016 1.00 128.11 0.276 135.13 76.17 2 4.72 594 1.6E-03 5.5E+02 1.5E-04 11 0.193 8539 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
0.984 5607.72 63.6 0.317 63.6 -0.1 -0.04 0.50%Interim Cover 0.050 100.7 0.05 0.00 0.05 0 1.70 108.103 1502.63 125.55 1282 0.50% 1.0 51% 0.83 0.00 0.83 0 1.00 0.13 1.00 1.0 0.058 74.38 199.94 1.000 17.22 0.96 0.65 0.68 2.52 1.0 0.017 1.00 125.55 0.264 107.97 62.60 2 4.77 594 1.6E-03 5.5E+02 1.5E-04 11 0.194 8504 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.148 5607.55 65.1 0.361 65.1 0.3 0.12 0.55%Interim Cover 0.050 100.7 0.06 0.00 0.06 0 1.70 110.704 1538.79 128.58 1125 0.55% 1.1 51% 0.84 0.00 0.84 0 1.00 0.13 1.00 1.0 0.058 75.44 204.02 1.000 17.24 0.96 0.65 0.67 2.42 1.0 0.018 1.00 128.58 0.278 97.36 57.30 2 4.82 594 1.6E-03 5.5E+02 1.5E-04 11 0.194 8469 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.312 5607.39 54.3 0.552 54.3 0.6 0.24 1.02%Interim Cover 0.050 100.7 0.07 0.00 0.07 0 1.70 92.293 1282.87 107.20 820 1.02% 1.3 51% 0.85 0.00 0.85 0 1.00 0.11 1.00 1.0 0.058 67.94 175.14 0.466 8.04 0.96 0.60 0.70 2.15 1.0 0.020 1.00 107.20 0.195 59.71 33.88 2 4.87 594 1.6E-03 5.5E+02 1.5E-04 11 0.195 8435 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.476 5607.22 52.5 0.448 52.5 1.4 0.61 0.85%Interim Cover 0.050 100.7 0.07 0.00 0.07 0 1.70 89.250 1240.58 103.68 705 0.85% 1.3 51% 0.86 0.00 0.86 0 1.00 0.11 1.00 1.0 0.058 66.70 170.38 0.411 7.11 0.96 0.59 0.71 2.05 1.0 0.021 1.00 103.68 0.184 50.12 28.61 2 4.92 594 1.6E-03 5.5E+02 1.5E-04 11 0.195 8401 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.640 5607.06 62.6 0.320 62.6 0.2 0.10 0.51%Interim Cover 0.050 100.7 0.08 0.00 0.08 0 1.70 106.369 1478.53 123.54 756 0.51% 1.1 51% 0.87 0.00 0.87 0 1.00 0.13 1.00 1.0 0.058 73.68 197.22 1.000 17.31 0.96 0.64 0.68 2.12 1.0 0.020 1.00 123.54 0.255 62.75 40.03 2 4.97 594 1.6E-03 5.5E+02 1.5E-04 11 0.196 8367 0.02%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.804 5606.90 50.3 0.452 50.3 0.5 0.20 0.90%Interim Cover 0.050 100.7 0.09 0.00 0.09 0 1.70 85.459 1187.88 99.26 552 0.90% 1.4 51% 0.87 0.00 0.87 0 1.00 0.11 1.00 1.0 0.058 65.15 164.42 0.358 6.20 0.96 0.58 0.71 1.91 1.0 0.022 1.00 99.26 0.171 38.20 22.20 2 5.02 594 1.6E-03 5.5E+02 1.5E-04 11 0.196 8334 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.968 5606.73 47.8 0.549 47.8 1.6 0.68 1.15%Interim Cover 0.050 100.7 0.10 0.00 0.10 0 1.70 81.243 1129.28 94.38 481 1.15% 1.5 51% 0.88 0.00 0.88 0 1.00 0.10 1.00 1.0 0.058 63.44 157.82 0.312 5.42 0.96 0.56 0.72 1.83 1.0 0.023 1.00 94.38 0.158 32.42 18.92 2 5.07 594 1.6E-03 5.5E+02 1.6E-04 11 0.197 8302 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.133 5606.57 63.2 0.574 63.2 4.1 1.77 0.91%Interim Cover 0.050 100.7 0.11 0.00 0.11 0 1.70 107.355 1492.23 124.74 587 0.91% 1.4 51% 0.89 0.00 0.89 0 1.00 0.13 1.00 1.0 0.057 74.09 198.83 1.000 17.40 0.96 0.64 0.68 1.96 1.0 0.022 1.00 124.74 0.260 49.30 33.35 2 5.12 594 1.6E-03 5.5E+02 1.6E-04 11 0.197 8270 0.02%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.297 5606.40 106.2 0.582 106.2 6.9 2.99 0.55%Interim Cover 0.050 100.7 0.12 0.00 0.12 0 1.70 180.489 2508.80 209.71 917 0.55% 1.1 51% 0.90 0.00 0.90 0 1.00 0.30 0.99 1.0 0.057 ##### 313.63 1.000 17.56 0.96 0.84 0.60 2.23 1.0 0.019 1.00 209.71 1.000 175.79 96.68 2 5.17 594 1.6E-03 5.5E+02 1.6E-04 11 0.197 8238 0.02%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.461 5606.24 97.4 0.552 97.4 1.7 0.72 0.57%Interim Cover 0.050 100.7 0.12 0.00 0.12 0 1.70 165.546 2301.09 192.29 785 0.57% 1.1 51% 0.91 0.00 0.91 0 1.00 0.24 0.99 1.0 0.057 97.80 290.09 1.000 17.58 0.96 0.80 0.60 2.17 1.0 0.019 1.00 192.29 1.000 164.14 90.86 2 5.22 594 1.6E-03 5.5E+02 1.6E-04 11 0.198 8207 0.02%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.625 5606.08 86.1 0.510 86.1 0.3 0.11 0.59%Interim Cover 0.050 100.7 0.13 0.00 0.13 0 1.70 146.370 2034.54 170.00 650 0.59% 1.2 51% 0.92 0.00 0.92 0 1.00 0.19 0.99 1.0 0.057 89.98 259.98 1.000 17.58 0.96 0.75 0.62 2.02 1.0 0.021 1.00 170.00 1.000 153.94 85.76 2 5.27 594 1.6E-03 5.5E+02 1.6E-04 11 0.198 8176 0.02%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.789 5605.91 76.9 0.485 76.9 0.2 0.09 0.63%Interim Cover 0.050 100.7 0.14 0.00 0.14 1 1.70 130.764 1817.62 151.88 558 0.63% 1.3 51% 0.92 0.00 0.92 0 0.99 0.16 0.99 1.0 0.057 83.62 235.50 1.000 17.59 0.96 0.71 0.64 1.92 1.0 0.022 1.00 151.88 0.406 60.00 38.79 2 5.32 594 1.6E-03 5.5E+02 1.6E-04 11 0.199 8146 0.02%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.953 5605.75 71.5 0.471 71.5 0.3 0.11 0.66%Interim Cover 0.050 100.7 0.15 0.01 0.14 1 1.70 121.567 1689.78 141.20 507 0.66% 1.3 51% 0.93 0.00 0.93 0 0.99 0.15 0.99 1.0 0.057 79.87 221.07 1.000 17.61 0.96 0.69 0.66 1.86 1.0 0.023 1.00 141.20 0.342 49.43 33.52 2 5.37 594 1.6E-03 5.5E+02 1.6E-04 11 0.199 8116 0.02%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
3.117 5605.58 59.8 0.416 59.8 -0.4 -0.18 0.70%Interim Cover 0.050 100.7 0.16 0.01 0.14 1 1.70 101.728 1414.02 118.15 415 0.70% 1.4 51% 0.94 0.00 0.94 0 0.99 0.12 0.99 1.0 0.057 71.78 189.93 0.749 13.18 0.96 0.63 0.69 1.75 1.0 0.024 1.00 118.15 0.233 33.02 23.10 2 5.42 495 1.6E-03 3.8E+02 2.4E-04 11 0.200 8086 0.05%2.00 0.65 0.03% 0.007 0.34 0.079 0.765 1.10% 0.0018
3.281 5605.42 51.6 0.323 51.6 -0.5 -0.22 0.63%Sand Tailings 0.062 123.5 0.17 0.02 0.15 1 1.70 87.652 1218.36 101.80 345 0.63% 1.4 18% 0.95 0.00 0.95 0 0.99 0.11 0.99 1.0 0.057 48.11 149.91 0.271 4.77 0.96 0.58 0.71 1.67 1.0 0.025 1.00 101.80 0.178 24.37 14.57 2 5.47 495 1.9E-03 4.7E+02 2.0E-04 0 0.204 10421 0.04% 2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.04% 0.0001
3.445 5605.26 44.7 0.266 44.7 -0.6 -0.26 0.60%Sand Tailings 0.062 123.5 0.18 0.02 0.15 1 1.70 75.956 1055.79 88.21 289 0.60% 1.4 18% 0.96 0.00 0.96 0 0.99 0.10 0.99 1.0 0.057 44.64 132.85 0.211 3.72 0.96 0.54 0.73 1.59 1.0 0.026 1.00 88.21 0.144 19.04 11.38 2 5.52 495 1.9E-03 4.7E+02 2.0E-04 0 0.204 10376 0.04% 2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.04% 0.0001
3.609 5605.09 39.4 0.205 39.4 -0.5 -0.22 0.52%Sand Tailings 0.062 123.5 0.19 0.03 0.16 1 1.70 66.963 930.79 77.77 247 0.52% 1.4 18% 0.97 0.00 0.97 0 0.99 0.09 0.99 1.0 0.057 41.97 119.74 0.179 3.16 0.96 0.51 0.75 1.54 1.0 0.027 1.00 77.77 0.124 15.87 9.52 2 5.57 495 1.9E-03 4.7E+02 2.0E-04 0 0.205 10331 0.04% 2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.05% 0.0001
3.773 5604.93 37.6 0.191 37.6 -0.5 -0.22 0.51%Sand Tailings 0.062 123.5 0.20 0.03 0.16 1 1.70 63.937 888.72 74.25 228 0.51% 1.4 18% 0.98 0.00 0.98 0 0.99 0.09 0.99 1.0 0.057 41.07 115.32 0.170 3.01 0.96 0.50 0.75 1.51 1.0 0.028 1.00 74.25 0.118 14.69 8.85 2 5.62 495 1.9E-03 4.7E+02 2.0E-04 0 0.205 10287 0.04% 2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.05% 0.0001
3.937 5604.76 39.1 0.168 39.1 1.0 0.43 0.43%Sand Tailings 0.062 123.5 0.21 0.04 0.17 1 1.70 66.538 924.88 77.29 230 0.43% 1.4 18% 0.99 0.00 0.99 0 0.99 0.09 0.99 1.0 0.056 41.85 119.14 0.178 3.15 0.96 0.51 0.75 1.51 1.0 0.028 1.00 77.29 0.123 14.85 9.00 2 5.67 495 1.9E-03 4.7E+02 2.1E-04 0 0.206 10244 0.05% 2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.05% 0.0001
4.101 5604.60 40.3 0.180 40.4 -0.4 -0.16 0.45%Sand Tailings 0.062 123.5 0.22 0.04 0.17 1 1.70 68.595 953.47 79.66 231 0.45% 1.4 18% 1.00 0.00 1.00 0 0.99 0.09 0.99 1.0 0.056 42.46 122.12 0.184 3.27 0.96 0.52 0.74 1.51 1.0 0.028 1.00 79.66 0.127 14.91 9.09 2 5.72 495 1.9E-03 4.7E+02 2.1E-04 0 0.206 10201 0.05% 2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.06% 0.0001
4.265 5604.43 39.7 0.206 39.7 0.2 0.07 0.52%Sand Tailings 0.062 123.5 0.23 0.05 0.18 1 1.70 67.507 938.35 78.41 221 0.52% 1.5 18% 1.01 0.00 1.01 0 0.99 0.09 0.99 1.0 0.056 42.13 120.54 0.181 3.21 0.96 0.51 0.74 1.49 1.0 0.028 1.00 78.41 0.125 14.24 8.73 2 5.77 495 1.9E-03 4.7E+02 2.1E-04 0 0.207 10159 0.05% 2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.06% 0.0001
4.429 5604.27 38.6 0.225 38.6 0.9 0.39 0.58%Sand Tailings 0.062 123.5 0.24 0.05 0.18 1 1.70 65.552 911.17 76.15 208 0.59% 1.5 18% 1.02 0.00 1.02 0 0.99 0.09 0.98 1.0 0.056 41.56 117.70 0.175 3.11 0.96 0.50 0.75 1.48 1.0 0.029 1.00 76.15 0.121 13.44 8.28 2 5.82 495 1.9E-03 4.7E+02 2.1E-04 0 0.207 10118 0.05% 2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.06% 0.0001
4.593 5604.11 38.4 0.229 38.4 1.2 0.52 0.60%Sand Tailings 0.062 123.5 0.25 0.06 0.19 1 1.70 65.348 908.34 75.91 202 0.60% 1.5 18% 1.03 0.00 1.03 0 0.98 0.09 0.98 1.0 0.056 41.50 117.41 0.174 3.11 0.96 0.50 0.75 1.46 1.0 0.029 1.00 75.91 0.121 13.05 8.08 2 5.87 495 1.9E-03 4.7E+02 2.1E-04 0 0.207 10077 0.05% 2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.07% 0.0001
4.757 5603.94 38.8 0.235 38.8 1.1 0.48 0.61%Sand Tailings 0.062 123.5 0.26 0.06 0.19 1 1.70 65.994 917.32 76.66 199 0.61% 1.5 18% 1.04 0.00 1.04 0 0.98 0.09 0.98 1.0 0.056 41.69 118.35 0.176 3.15 0.95 0.51 0.75 1.46 1.0 0.029 1.00 76.66 0.122 12.85 8.00 2 5.92 495 1.9E-03 4.7E+02 2.2E-04 0 0.208 10037 0.05% 2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.07% 0.0001
4.921 5603.78 37.7 0.214 37.7 1.2 0.54 0.57%Sand Tailings 0.062 123.5 0.27 0.07 0.20 1 1.70 64.039 890.14 74.39 188 0.57% 1.5 18% 1.05 0.00 1.05 0 0.98 0.09 0.98 1.0 0.056 41.11 115.50 0.170 3.05 0.95 0.50 0.75 1.44 1.0 0.029 1.00 74.39 0.118 12.16 7.60 2 5.97 495 1.9E-03 4.7E+02 2.2E-04 0 0.208 9997 0.05% 2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.07% 0.0001
5.085 5603.61 35.6 0.246 35.6 1.2 0.52 0.69%Sand Tailings 0.062 123.5 0.28 0.07 0.20 1 1.70 60.554 841.70 70.34 173 0.70% 1.6 18% 1.06 0.00 1.06 0 0.98 0.08 0.98 1.0 0.056 40.07 110.42 0.161 2.88 0.95 0.48 0.76 1.42 1.0 0.030 1.00 70.34 0.112 11.27 7.08 2 6.02 495 1.9E-03 4.7E+02 2.2E-04 0 0.209 9958 0.05% 2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.08% 0.0001
5.249 5603.45 30.5 0.236 30.5 0.3 0.13 0.77%Sand-Slime Tailing 0.059 119.0 0.29 0.08 0.21 1 1.70 51.850 720.72 60.22 145 0.78% 1.7 47% 1.07 0.00 1.07 0 0.98 0.08 0.98 1.0 0.056 51.42 111.65 0.163 2.92 0.95 0.45 0.78 1.37 1.0 0.031 1.05 63.25 0.104 10.16 6.54 2 6.07 495 1.8E-03 4.5E+02 2.3E-04 10 0.207 7864 0.04% 2.00 0.65 0.03% 0.006 0.34 0.079 0.765 0.93% 0.0015
5.413 5603.29 27.1 0.216 27.1 1.1 0.48 0.80%Sand-Slime Tailing 0.059 119.0 0.30 0.08 0.21 1 1.70 46.121 641.08 53.58 126 0.80% 1.8 47% 1.08 0.00 1.08 0 0.98 0.07 0.98 1.0 0.056 49.09 102.67 0.147 2.64 0.95 0.42 0.79 1.34 1.0 0.031 1.09 58.28 0.098 9.45 6.04 2 6.12 495 1.8E-03 4.5E+02 2.3E-04 10 0.207 7835 0.04% 2.00 0.65 0.03% 0.006 0.34 0.079 0.765 0.96% 0.0016
5.577 5603.12 26.7 0.176 26.7 1.6 0.68 0.66%Sand-Slime Tailing 0.059 119.0 0.31 0.09 0.22 1 1.70 45.356 630.45 52.70 121 0.67% 1.7 47% 1.09 0.00 1.09 0 0.98 0.07 0.98 1.0 0.056 48.78 101.48 0.145 2.61 0.95 0.42 0.79 1.33 1.0 0.032 1.06 55.98 0.096 9.06 5.83 2 6.16 495 1.8E-03 4.5E+02 2.3E-04 10 0.208 7806 0.04% 2.00 0.65 0.03% 0.006 0.34 0.079 0.765 0.99% 0.0016
5.741 5602.96 25.2 0.169 25.2 1.8 0.76 0.67%Sand-Slime Tailing 0.059 119.0 0.32 0.09 0.22 1 1.70 42.857 595.71 49.80 112 0.68% 1.8 47% 1.10 0.00 1.10 0 0.98 0.07 0.98 1.0 0.056 47.77 97.56 0.139 2.49 0.95 0.41 0.80 1.32 1.0 0.032 1.08 53.98 0.095 8.71 5.60 2 6.21 495 1.8E-03 4.5E+02 2.4E-04 10 0.208 7777 0.05% 2.00 0.65 0.03% 0.007 0.34 0.079 0.765 1.02% 0.0017
5.905 5602.79 22.4 0.156 22.3 1.8 0.78 0.70%Sand-Slime Tailing 0.059 119.0 0.33 0.10 0.23 1 1.70 37.978 527.89 44.13 97 0.71% 1.8 47% 1.11 0.00 1.11 0 0.98 0.07 0.98 1.0 0.056 45.78 89.91 0.127 2.28 0.95 0.38 0.80 1.31 1.0 0.032 1.13 49.81 0.091 8.26 5.27 2 6.26 495 1.8E-03 4.5E+02 2.4E-04 10 0.209 7748 0.05% 2.00 0.65 0.03% 0.007 0.34 0.079 0.765 1.05% 0.0017
6.069 5602.63 20.9 0.135 20.9 2.6 1.11 0.64%Sand-Slime Tailing 0.059 119.0 0.34 0.11 0.23 1 1.70 35.581 494.58 41.36 89 0.66% 1.8 47% 1.12 0.00 1.12 0 0.98 0.07 0.98 1.0 0.055 44.81 86.16 0.121 2.19 0.95 0.37 0.80 1.30 1.0 0.032 1.14 47.05 0.089 7.89 5.04 2 6.31 495 1.8E-03 4.5E+02 2.4E-04 10 0.209 7720 0.05% 2.00 0.65 0.03% 0.007 0.34 0.079 0.765 1.08% 0.0018
6.234 5602.47 20.2 0.127 20.2 2.1 0.93 0.63%Sand-Slime Tailing 0.059 119.0 0.35 0.11 0.24 1 1.70 34.289 476.62 39.85 84 0.64% 1.9 47% 1.13 0.00 1.13 0 0.98 0.06 0.98 1.0 0.055 44.28 84.13 0.118 2.14 0.95 0.36 0.80 1.29 1.0 0.032 1.15 45.83 0.088 7.65 4.89 2 6.36 495 1.8E-03 4.5E+02 2.4E-04 10 0.210 7693 0.05% 2.00 0.65 0.03% 0.007 0.34 0.079 0.765 1.11% 0.0018
6.398 5602.30 20.6 0.117 20.6 2.6 1.13 0.57%Sand-Slime Tailing 0.059 119.0 0.36 0.12 0.24 1 1.70 34.935 485.60 40.61 84 0.58% 1.8 47% 1.14 0.00 1.14 0 0.97 0.07 0.98 1.0 0.055 44.54 85.15 0.120 2.17 0.95 0.37 0.80 1.29 1.0 0.033 1.13 45.93 0.088 7.51 4.84 2 6.41 495 1.8E-03 4.5E+02 2.5E-04 10 0.210 7665 0.05% 2.00 0.65 0.03% 0.007 0.34 0.079 0.765 1.14% 0.0019
6.562 5602.14 22.3 0.113 22.3 2.7 1.16 0.51%Sand-Slime Tailing 0.059 119.0 0.37 0.12 0.25 1 1.70 37.859 526.24 44.00 89 0.52% 1.8 47% 1.15 0.00 1.15 0 0.97 0.07 0.98 1.0 0.055 45.73 89.74 0.127 2.29 0.95 0.38 0.80 1.28 1.0 0.033 1.09 48.16 0.090 7.53 4.91 2 6.46 495 1.8E-03 4.5E+02 2.5E-04 10 0.211 7638 0.05% 2.00 0.65 0.03% 0.008 0.34 0.079 0.765 1.17% 0.0019
6.726 5601.97 22.1 0.120 22.1 2.6 1.14 0.54%Sand-Slime Tailing 0.059 119.0 0.38 0.13 0.25 1 1.70 37.621 522.93 43.73 87 0.55% 1.8 47% 1.16 0.00 1.16 0 0.97 0.07 0.98 1.0 0.055 45.64 89.36 0.126 2.29 0.95 0.38 0.80 1.28 1.0 0.033 1.11 48.64 0.091 7.43 4.86 2 6.51 495 1.8E-03 4.5E+02 2.5E-04 10 0.211 7612 0.05% 2.00 0.65 0.03% 0.008 0.34 0.079 0.765 1.19% 0.0020
6.890 5601.81 21.1 0.125 21.1 3.5 1.52 0.59%Sand-Slime Tailing 0.059 119.0 0.39 0.13 0.26 1 1.70 35.785 497.41 41.61 81 0.60% 1.9 47% 1.17 0.00 1.17 0 0.97 0.07 0.98 1.0 0.055 44.89 86.50 0.122 2.21 0.95 0.37 0.80 1.28 1.0 0.033 1.15 47.80 0.090 7.24 4.73 2 6.56 495 1.8E-03 4.5E+02 2.5E-04 10 0.211 7585 0.05% 2.00 0.65 0.03% 0.008 0.34 0.079 0.765 1.22% 0.0020
7.054 5601.65 19.4 0.130 19.3 4.1 1.77 0.67%Sand-Slime Tailing 0.059 119.0 0.40 0.14 0.26 1 1.70 32.861 456.77 38.22 73 0.69% 1.9 47% 1.18 0.00 1.18 0 0.97 0.06 0.98 1.0 0.055 43.70 81.92 0.115 2.10 0.95 0.36 0.80 1.27 1.0 0.033 1.21 46.28 0.089 7.01 4.55 2 6.61 495 1.8E-03 4.5E+02 2.5E-04 10 0.212 7559 0.05% 2.00 0.65 0.03% 0.008 0.34 0.079 0.765 1.25% 0.0021
7.218 5601.48 18.3 0.128 18.3 4.2 1.81 0.70%Sand-Slime Tailing 0.059 119.0 0.41 0.14 0.26 1 1.70 31.025 431.25 36.09 68 0.72% 2.0 47% 1.19 0.00 1.19 0 0.97 0.06 0.98 1.0 0.055 42.96 79.04 0.111 2.03 0.95 0.35 0.80 1.27 1.0 0.033 1.25 45.19 0.088 6.82 4.42 2 6.66 495 1.8E-03 4.5E+02 2.6E-04 10 0.212 7533 0.05% 2.00 0.65 0.03% 0.008 0.34 0.079 0.765 1.28% 0.0021
7.382 5601.32 17.3 0.127 17.3 4.7 2.05 0.73%Sand-Slime Tailing 0.059 119.0 0.42 0.15 0.27 1 1.70 29.393 408.56 34.20 63 0.75% 2.0 47% 1.20 0.00 1.20 0 0.97 0.06 0.98 1.0 0.055 42.29 76.49 0.108 1.97 0.95 0.34 0.80 1.26 1.0 0.033 1.30 44.41 0.087 6.66 4.31 2 6.71 495 1.8E-03 4.5E+02 2.6E-04 10 0.213 7508 0.05% 2.00 0.65 0.03% 0.009 0.34 0.079 0.765 1.31% 0.0021
7.546 5601.15 16.0 0.118 16.0 4.7 2.05 0.74%Sand-Slime Tailing 0.059 119.0 0.42 0.15 0.27 1 1.70 27.234 378.55 31.69 57 0.76% 2.0 47% 1.21 0.00 1.21 0 0.97 0.06 0.98 1.0 0.055 41.42 73.10 0.104 1.89 0.95 0.33 0.80 1.26 1.0 0.033 1.35 42.74 0.086 6.44 4.17 2 6.76 495 1.8E-03 4.5E+02 2.6E-04 10 0.213 7482 0.05% 2.00 0.65 0.03% 0.009 0.34 0.079 0.765 1.34% 0.0022
7.710 5600.99 15.9 0.100 15.8 4.8 2.10 0.63%Sand-Slime Tailing 0.059 119.0 0.43 0.16 0.28 1 1.70 26.894 373.83 31.30 55 0.65% 2.0 47% 1.22 0.00 1.22 0 0.97 0.06 0.98 1.0 0.055 41.28 72.57 0.103 1.88 0.95 0.32 0.80 1.25 1.0 0.033 1.32 41.16 0.084 6.24 4.06 2 6.81 495 1.8E-03 4.5E+02 2.6E-04 10 0.214 7458 0.05% 2.00 0.65 0.03% 0.009 0.34 0.079 0.765 1.37% 0.0022
7.874 5600.83 14.1 0.079 14.0 5.5 2.40 0.56%Sand-Slime Tailing 0.059 119.0 0.44 0.16 0.28 1 1.70 23.868 331.77 27.79 48 0.58% 2.0 47% 1.23 0.00 1.23 0 0.96 0.06 0.98 1.0 0.055 40.05 67.84 0.097 1.77 0.95 0.30 0.80 1.25 1.0 0.033 1.36 37.67 0.081 5.93 3.85 2 6.86 495 1.8E-03 4.5E+02 2.6E-04 10 0.214 7433 0.06% 2.00 0.65 0.03% 0.009 0.34 0.079 0.765 1.40% 0.0023
8.038 5600.66 12.3 0.079 12.3 7.0 3.05 0.64%Sand-Slime Tailing 0.059 119.0 0.45 0.17 0.29 1 1.70 20.842 289.70 24.29 41 0.67% 2.1 47% 1.24 0.00 1.24 0 0.96 0.06 0.98 1.0 0.055 38.82 63.12 0.091 1.67 0.95 0.28 0.80 1.25 1.0 0.034 1.51 36.66 0.081 5.77 3.72 2 6.91 495 1.8E-03 4.5E+02 2.7E-04 10 0.214 7409 0.06% 2.00 0.65 0.03% 0.009 0.34 0.079 0.765 1.42% 0.0023
8.202 5600.50 10.1 0.079 10.1 7.8 3.40 0.78%Sand-Slime Tailing 0.059 119.0 0.46 0.17 0.29 1 1.70 17.153 238.43 20.02 33 0.82% 2.3 47% 1.25 0.00 1.25 0 0.96 0.05 0.98 1.0 0.055 37.32 57.34 0.085 1.56 0.95 0.26 0.80 1.24 1.0 0.034 1.81 36.27 0.080 5.66 3.61 2 6.96 495 1.8E-03 4.5E+02 2.7E-04 10 0.215 7384 0.06% 2.00 0.65 0.03% 0.009 0.34 0.079 0.765 1.45% 0.0024
8.366 5600.33 10.5 0.074 10.5 7.9 3.42 0.70%Sand-Slime Tailing 0.059 119.0 0.47 0.18 0.30 1 1.70 17.782 247.17 20.75 34 0.74% 2.2 47% 1.26 0.00 1.26 0 0.96 0.05 0.98 1.0 0.054 37.58 58.33 0.086 1.58 0.95 0.26 0.80 1.24 1.0 0.034 1.73 35.90 0.080 5.55 3.57 2 7.01 495 1.8E-03 4.5E+02 2.7E-04 10 0.215 7361 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.48% 0.0024
8.530 5600.17 11.2 0.094 11.1 7.1 3.07 0.84%Sand-Slime Tailing 0.059 119.0 0.48 0.18 0.30 1 1.70 18.887 262.53 22.02 35 0.88% 2.2 47% 1.27 0.00 1.27 0 0.96 0.05 0.98 1.0 0.054 38.03 60.05 0.088 1.62 0.95 0.27 0.80 1.23 1.0 0.034 1.79 39.40 0.083 5.67 3.64 2 7.06 495 1.8E-03 4.5E+02 2.7E-04 10 0.216 7337 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.51% 0.0025
8.694 5600.01 9.4 0.107 9.4 7.9 3.44 1.13%Sand-Slime Tailing 0.059 119.0 0.49 0.19 0.31 1 1.70 15.946 221.65 18.62 29 1.20% 2.4 47% 1.28 0.00 1.28 0 0.96 0.05 0.98 1.0 0.054 36.83 55.45 0.083 1.53 0.95 0.25 0.80 1.23 1.0 0.034 2.27 42.18 0.085 5.74 3.63 2 7.11 495 1.8E-03 4.5E+02 2.7E-04 10 0.216 7314 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.54% 0.0025
8.858 5599.84 8.8 0.081 8.7 12.4 5.35 0.92%Sand-Slime Tailing 0.059 119.0 0.50 0.19 0.31 1 1.70 14.756 205.11 17.29 27 0.98% 2.4 47% 1.29 0.00 1.29 0 0.96 0.05 0.98 1.0 0.054 36.37 53.66 0.081 1.49 0.95 0.24 0.80 1.23 1.0 0.034 2.22 38.45 0.082 5.45 3.47 2 7.16 495 1.8E-03 4.5E+02 2.8E-04 10 0.217 7291 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.57% 0.0026
9.022 5599.68 11.1 0.076 11.1 5.6 2.43 0.68%Sand-Slime Tailing 0.059 119.0 0.51 0.20 0.32 1 1.70 18.870 262.29 21.99 34 0.72% 2.2 47% 1.30 0.00 1.30 0 0.96 0.05 0.98 1.0 0.054 38.01 60.00 0.088 1.62 0.94 0.27 0.80 1.22 1.0 0.034 1.72 37.76 0.081 5.34 3.48 2 7.21 495 1.8E-03 4.5E+02 2.8E-04 10 0.217 7268 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.59% 0.0026
9.186 5599.51 9.6 0.061 9.6 2.1 0.91 0.63%Sand-Slime Tailing 0.059 119.0 0.52 0.20 0.32 1 1.70 16.337 227.08 19.00 28 0.67% 2.3 47% 1.31 0.00 1.31 0 0.96 0.05 0.98 1.0 0.054 36.97 55.97 0.084 1.54 0.94 0.25 0.80 1.22 1.0 0.034 1.86 35.35 0.079 5.13 3.34 2 7.26 495 1.8E-03 4.5E+02 2.8E-04 10 0.217 7245 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.62% 0.0027
9.350 5599.35 12.2 0.050 12.2 2.4 1.04 0.41%Sand-Slime Tailing 0.059 119.0 0.53 0.21 0.32 1 1.70 20.672 287.34 24.04 36 0.43% 2.1 47% 1.32 0.00 1.32 0 0.96 0.06 0.98 1.0 0.054 38.73 62.77 0.091 1.69 0.94 0.28 0.80 1.22 1.0 0.034 1.45 34.83 0.079 5.03 3.36 2 7.31 460 1.8E-03 3.9E+02 3.3E-04 10 0.218 7223 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.45% 0.0040
9.514 5599.19 10.4 0.053 10.4 2.6 1.12 0.51%Sand-Slime Tailing 0.059 119.0 0.54 0.21 0.33 1 1.70 17.646 245.28 20.53 30 0.54% 2.2 47% 1.32 0.00 1.32 0 0.95 0.05 0.98 1.0 0.054 37.50 58.03 0.086 1.59 0.94 0.26 0.80 1.21 1.0 0.034 1.69 34.67 0.079 4.96 3.27 2 7.36 460 1.8E-03 3.9E+02 3.3E-04 10 0.218 7201 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.49% 0.0041
9.678 5599.02 8.2 0.072 8.2 6.3 2.75 0.87%Sand-Slime Tailing 0.059 119.0 0.55 0.22 0.33 1 1.70 13.957 194.00 16.29 23 0.94% 2.4 47% 1.33 0.00 1.33 0 0.95 0.05 0.98 1.0 0.054 36.01 52.30 0.080 1.48 0.94 0.23 0.80 1.21 1.0 0.034 2.40 39.07 0.083 5.12 3.30 2 7.41 460 1.8E-03 3.9E+02 3.3E-04 10 0.219 7179 0.09% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.53% 0.0041
9.842 5598.86 6.7 0.056 6.7 7.3 3.18 0.83%Slime Tailings 0.057 113.1 0.56 0.22 0.34 1 1.70 11.356 157.85 13.28 18 0.91% 2.5 71% 1.34 0.00 1.34 0 0.95 0.05 0.98 1.0 0.054 34.71 47.99 0.076 1.40 0.94 0.21 0.80 1.21 1.0 0.034 2.79 37.02 0.081 4.95 3.18 2 7.46 460 1.8E-03 3.7E+02 3.5E-04 16 0.470 5897 0.11% 2.00 0.65 0.03% 0.020 0.34 0.079 0.765 3.07% 0.0050
10.006 5598.69 5.1 0.106 5.0 9.4 4.07 2.09%Slime Tailings 0.057 113.1 0.57 0.23 0.34 1 1.70 8.534 118.62 10.03 13 2.35% 2.8 71% 1.35 0.00 1.35 0 0.95 0.05 0.98 1.0 0.054 33.58 43.61 0.072 1.33 0.94 0.18 0.80 1.20 1.0 0.035 5.12 51.34 0.093 5.60 3.47 2 7.51 460 1.8E-03 3.7E+02 3.5E-04 16 0.471 5880 0.12% 2.00 0.65 0.03% 0.020 0.34 0.079 0.765 3.11% 0.0051
10.170 5598.53 3.9 0.092 3.9 4.9 2.13 2.36%Slime Tailings 0.057 113.1 0.58 0.23 0.35 1 1.70 6.562 91.21 7.68 10 2.78% 3.0 71% 1.36 0.00 1.36 0 0.95 0.04 0.98 1.0 0.054 32.76 40.44 0.069 1.28 0.94 0.16 0.80 1.20 1.0 0.035 6.68 51.34 0.093 5.54 3.41 2 7.56 460 1.8E-03 3.7E+02 3.6E-04 16 0.471 5864 0.12% 2.00 0.65 0.03%0.021 0.34 0.079 0.765 3.14% 0.0052
10.335 5598.37 5.5 0.171 5.5 6.9 2.99 3.11%Slime Tailings 0.057 113.1 0.59 0.24 0.35 1 1.70 9.265 128.78 10.85 14 3.49% 2.9 71% 1.37 0.00 1.37 0 0.95 0.05 0.98 1.0 0.054 33.86 44.71 0.073 1.35 0.94 0.19 0.80 1.20 1.0 0.035 5.87 63.62 0.104 6.15 3.75 2 7.61 460 1.8E-03 3.7E+02 3.6E-04 16 0.472 5847 0.12% 2.00 0.65 0.03% 0.021 0.34 0.079 0.765 3.18% 0.0052
10.499 5598.20 10.4 0.222 10.4 3.4 1.48 2.14%Slime Tailings 0.057 113.1 0.60 0.24 0.35 1 1.70 17.612 244.81 20.50 28 2.27% 2.6 71% 1.38 0.00 1.38 0 0.95 0.05 0.98 1.0 0.053 37.23 57.72 0.085 1.60 0.94 0.26 0.80 1.19 1.0 0.035 3.14 64.46 0.105 6.13 3.87 2 7.66 460 1.8E-03 3.7E+02 3.6E-04 16 0.472 5831 0.12% 2.00 0.65 0.03% 0.021 0.34 0.079 0.765 3.22% 0.0053
10.663 5598.04 4.3 0.241 4.2 13.2 5.72 5.67%Slime Tailings 0.057 113.1 0.61 0.25 0.36 1 1.70 7.089 98.54 8.40 10 6.61% 3.2 71% 1.39 0.00 1.39 0 0.95 0.04 0.98 1.0 0.054 33.01 41.41 0.070 1.30 0.94 0.17 0.80 1.19 1.0 0.035 9.23 77.49 0.123 7.13 4.21 2 7.71 460 1.8E-03 3.7E+02 3.6E-04 16 0.472 5815 0.12% 2.00 0.65 0.03%0.021 0.34 0.079 0.765 3.26% 0.0053
10.827 5597.87 5.7 0.239 5.6 23.2 10.07 4.17%Slime Tailings 0.057 113.1 0.62 0.25 0.36 1 1.70 9.486 131.86 11.30 14 4.68% 3.0 71% 1.40 0.00 1.40 0 0.95 0.05 0.98 1.0 0.053 34.02 45.33 0.073 1.37 0.94 0.19 0.80 1.19 1.0 0.035 6.68 75.46 0.120 6.86 4.11 2 7.76 460 1.8E-03 3.7E+02 3.7E-04 16 0.473 5799 0.12% 2.00 0.65 0.03% 0.022 0.34 0.079 0.765 3.30% 0.0054
10.991 5597.71 11.2 0.225 11.1 15.4 6.69 2.01%Slime Tailings 0.057 113.1 0.63 0.26 0.37 1 1.70 18.904 262.77 22.15 29 2.12% 2.5 71% 1.41 0.00 1.41 0 0.94 0.05 0.97 1.0 0.053 37.80 59.95 0.088 1.65 0.94 0.27 0.80 1.19 1.0 0.035 2.96 65.57 0.106 6.01 3.83 2 7.81 460 1.8E-03 3.7E+02 3.7E-04 16 0.473 5783 0.13% 2.00 0.65 0.03% 0.022 0.34 0.079 0.765 3.33% 0.0055
11.155 5597.55 3.0 0.253 2.9 12.9 5.59 8.49%Slime Tailings 0.057 113.1 0.64 0.26 0.37 1 1.70 4.930 68.53 5.88 6 10.79% 3.5 71% 1.42 0.00 1.42 0 0.94 0.04 0.98 1.0 0.053 32.14 38.02 0.067 1.26 0.94 0.14 0.80 1.18 1.0 0.035 13.96 82.18 0.132 7.36 4.31 2 7.86 460 1.8E-03 3.7E+02 3.7E-04 16 0.473 5768 0.13% 2.00 0.65 0.03%0.022 0.34 0.079 0.765 3.37% 0.0055
11.319 5597.38 2.8 0.251 2.7 7.9 3.44 9.10%Slime Tailings 0.057 113.1 0.64 0.27 0.38 1 1.70 4.607 64.04 5.45 6 11.87% 3.6 71% 1.43 0.00 1.43 0 0.94 0.04 0.98 1.0 0.053 31.99 37.43 0.067 1.25 0.94 0.13 0.80 1.18 1.0 0.035 15.18 82.68 0.133 7.34 4.29 2 7.91 460 1.8E-03 3.7E+02 3.7E-04 16 0.474 5752 0.13% 2.00 0.65 0.03%0.022 0.34 0.079 0.765 3.41% 0.0056
11.483 5597.22 12.0 0.174 12.0 3.9 1.69 1.45%Sand-Slime Tailing 0.059 119.0 0.65 0.27 0.38 1 1.70 20.417 283.80 23.76 30 1.53% 2.4 47% 1.44 0.00 1.44 0 0.94 0.05 0.97 1.0 0.053 38.63 62.40 0.091 1.71 0.94 0.28 0.80 1.18 1.0 0.035 2.48 58.88 0.099 5.41 3.56 2 7.96 460 1.8E-03 3.9E+02 3.6E-04 10 0.223 6962 0.11% 2.00 0.65 0.03% 0.019 0.34 0.079 0.765 2.93% 0.0048
11.647 5597.05 28.9 0.523 28.8 10.2 4.41 1.81%Sand-Slime Tailing 0.059 119.0 0.66 0.28 0.38 1 1.65 47.502 660.28 55.29 73 1.85% 2.2 47% 1.45 0.00 1.45 0 0.94 0.07 0.96 1.0 0.052 49.69 104.99 0.151 2.89 0.94 0.43 0.79 1.19 1.0 0.035 1.64 90.56 0.149 8.06 5.47 2 8.01 460 1.8E-03 3.9E+02 3.6E-04 10 0.223 6942 0.11% 2.00 0.65 0.03% 0.019 0.34 0.079 0.765 2.97% 0.0049
11.811 5596.89 85.4 0.752 85.2 32.0 13.87 0.88%Sand Tailings 0.062 123.5 0.67 0.28 0.39 1 1.40 119.039 1654.64 138.58 217 0.89% 1.6 18% 1.46 0.00 1.46 0 0.94 0.14 0.92 1.0 0.050 57.52 196.10 0.958 19.11 0.94 0.68 0.66 1.31 1.0 0.032 1.00 138.58 0.328 17.48 18.30 2 8.06 460 1.9E-03 4.1E+02 3.5E-04 0 0.225 8745 0.17%2.20 1.00 0.03% 0.003 0.34 0.079 0.765 0.46% 0.0008
11.975 5596.73 141.3 0.619 140.6 118.3 51.27 0.44%Sand Tailings 0.062 123.5 0.68 0.29 0.39 1 1.28 179.877 2500.28 210.01 356 0.44% 1.3 18% 1.47 0.00 1.47 0 0.94 0.30 0.84 1.0 0.046 75.78 285.79 1.000 21.92 0.94 0.84 0.60 1.37 1.0 0.030 1.00 210.01 1.000 52.72 37.32 2 8.11 460 1.9E-03 4.1E+02 3.5E-04 0 0.225 8720 0.17%2.20 1.00 0.03% 0.003 0.34 0.079 0.765 0.47% 0.0008
12.139 5596.56 153.1 1.039 152.7 76.3 33.05 0.68%Sand Tailings 0.062 123.5 0.69 0.29 0.40 1 1.26 192.043 2669.40 223.74 381 0.68% 1.4 18% 1.48 0.00 1.48 0 0.94 0.30 0.84 1.0 0.045 79.29 303.03 1.000 22.05 0.94 0.86 0.60 1.36 1.0 0.030 1.00 223.74 1.000 52.09 37.07 2 8.16 460 1.9E-03 4.1E+02 3.6E-04 0 0.225 8695 0.17%2.20 1.00 0.03% 0.003 0.34 0.079 0.765 0.48% 0.0008
12.303 5596.40 126.4 0.970 126.3 17.7 7.67 0.77%Sand Tailings 0.062 123.5 0.70 0.30 0.40 1 1.30 163.560 2273.49 190.13 310 0.77% 1.5 18% 1.49 0.00 1.49 0 0.94 0.24 0.87 1.0 0.047 70.70 260.83 1.000 21.23 0.94 0.80 0.60 1.35 1.0 0.031 1.00 190.13 1.000 51.46 36.35 2 8.21 460 1.9E-03 4.1E+02 3.6E-04 0 0.226 8671 0.18%2.20 1.00 0.03% 0.003 0.34 0.079 0.765 0.49% 0.0008
12.467 5596.23 12.1 0.808 12.0 22.2 9.64 6.66%Slime Tailings 0.057 113.1 0.71 0.30 0.41 1 1.70 20.400 283.56 23.97 28 7.07% 2.9 71% 1.50 0.00 1.50 0 0.93 0.06 0.97 1.0 0.052 38.43 62.40 0.091 1.73 0.94 0.28 0.80 1.16 1.0 0.036 5.65 135.34 0.311 15.83 8.78 2 8.26 460 1.8E-03 3.7E+02 3.9E-04 16 0.476 5641 0.14% 2.00 0.65 0.03% 0.024 0.34 0.079 0.765 3.71% 0.0061
12.631 5596.07 18.2 0.402 18.1 12.5 5.41 2.21%Sand-Slime Tailing 0.059 119.0 0.72 0.31 0.41 1 1.67 30.267 420.71 35.30 42 2.30% 2.4 47% 1.51 0.00 1.51 0 0.93 0.06 0.97 1.0 0.052 42.68 77.99 0.110 2.11 0.94 0.34 0.80 1.16 1.0 0.036 2.44 86.07 0.139 7.02 4.57 2 8.31 460 1.8E-03 3.9E+02 3.8E-04 10 0.225 6827 0.12% 2.00 0.65 0.03% 0.021 0.34 0.079 0.765 3.22% 0.0053
12.795 5595.90 26.5 0.286 26.5 1.9 0.81 1.08%Sand-Slime Tailing 0.059 119.0 0.73 0.31 0.42 1 1.59 42.092 585.08 48.91 62 1.11% 2.1 47% 1.52 0.00 1.52 0 0.93 0.07 0.96 1.0 0.052 47.45 96.36 0.137 2.64 0.94 0.40 0.80 1.16 1.0 0.036 1.46 71.51 0.114 5.69 4.16 2 8.36 460 1.8E-03 3.9E+02 3.8E-04 10 0.226 6809 0.12% 2.00 0.65 0.03% 0.021 0.34 0.079 0.765 3.26% 0.0053
12.959 5595.74 36.4 0.258 36.4 1.4 0.59 0.71%Sand Tailings 0.062 123.5 0.74 0.32 0.42 1 1.52 55.289 768.51 64.23 84 0.72% 1.9 18% 1.53 0.00 1.53 0 0.93 0.08 0.95 1.0 0.051 38.51 102.74 0.147 2.87 0.94 0.46 0.77 1.18 1.0 0.035 1.18 75.48 0.120 5.92 4.39 2 8.41 460 1.9E-03 4.1E+02 3.7E-04 0 0.227 8580 0.19% 2.20 1.00 0.03%0.003 0.34 0.079 0.765 0.53% 0.0009
13.123 5595.58 11.0 0.376 10.9 16.2 7.02 3.43%Slime Tailings 0.057 113.1 0.75 0.33 0.43 1 1.70 18.462 256.62 21.64 24 3.68% 2.8 71% 1.54 0.00 1.54 0 0.93 0.05 0.97 1.0 0.052 37.62 59.27 0.087 1.67 0.94 0.27 0.80 1.15 1.0 0.036 4.38 94.82 0.159 7.78 4.73 2 8.46 460 1.8E-03 3.7E+02 4.0E-04 16 0.478 5582 0.15% 2.00 0.65 0.03% 0.025 0.34 0.079 0.765 3.88% 0.0064
13.287 5595.41 24.7 0.375 24.6 16.4 7.12 1.52%Sand-Slime Tailing 0.059 119.0 0.76 0.33 0.43 1 1.57 38.712 538.09 45.15 55 1.57% 2.2 47% 1.55 0.00 1.55 0 0.93 0.07 0.96 1.0 0.052 46.14 91.28 0.129 2.50 0.93 0.39 0.80 1.15 1.0 0.036 1.75 78.95 0.126 6.08 4.29 2 8.51 460 1.8E-03 3.9E+02 3.9E-04 10 0.227 6756 0.13% 2.00 0.65 0.03% 0.022 0.34 0.079 0.765 3.38% 0.0055
13.451 5595.25 8.9 0.177 8.8 15.2 6.59 1.99%Slime Tailings 0.057 113.1 0.77 0.34 0.44 1 1.70 14.960 207.94 17.56 19 2.18% 2.7 71% 1.55 0.00 1.55 0 0.93 0.05 0.97 1.0 0.052 36.20 53.77 0.081 1.56 0.93 0.24 0.80 1.15 1.0 0.036 3.97 69.67 0.111 5.34 3.45 2 8.56 460 1.8E-03 3.7E+02 4.1E-04 16 0.478 5554 0.15% 2.00 0.65 0.03% 0.026 0.34 0.079 0.765 3.96% 0.0065
13.615 5595.08 3.6 0.140 3.4 36.3 15.72 3.88%Slime Tailings 0.057 113.1 0.78 0.34 0.44 1 1.69 5.708 79.34 7.07 6 4.95% 3.3 71% 1.56 0.00 1.56 0 0.93 0.04 0.97 1.0 0.052 32.55 39.62 0.068 1.31 0.93 0.15 0.80 1.14 1.0 0.036 10.41 73.64 0.117 5.56 3.43 2 8.61 460 1.8E-03 3.7E+02 4.1E-04 16 0.479 5540 0.16% 2.00 0.65 0.03%0.026 0.34 0.079 0.765 4.00% 0.0066
13.779 5594.92 4.3 0.102 4.0 46.1 19.97 2.37%Slime Tailings 0.057 113.1 0.79 0.35 0.44 1 1.68 6.739 93.67 8.39 8 2.90% 3.1 71% 1.57 0.00 1.57 0 0.92 0.04 0.97 1.0 0.052 33.01 41.40 0.070 1.34 0.93 0.17 0.80 1.14 1.0 0.036 7.60 63.70 0.104 4.89 3.12 2 8.66 460 1.8E-03 3.7E+02 4.1E-04 16 0.479 5527 0.16% 2.00 0.65 0.03%0.026 0.34 0.079 0.765 4.04% 0.0066
13.943 5594.76 4.7 0.064 4.4 49.6 21.48 1.35%Slime Tailings 0.057 113.1 0.80 0.35 0.45 1 1.66 7.355 102.24 9.14 9 1.63% 2.9 71% 1.58 0.00 1.58 0 0.92 0.04 0.97 1.0 0.052 33.27 42.41 0.071 1.36 0.93 0.17 0.80 1.14 1.0 0.036 5.75 52.54 0.093 4.36 2.86 2 8.71 460 1.8E-03 3.7E+02 4.2E-04 16 0.479 5514 0.16% 2.00 0.65 0.03%0.027 0.34 0.079 0.765 4.09% 0.0067
14.107 5594.59 5.1 0.026 4.8 50.7 21.98 0.51%Slime Tailings 0.057 113.1 0.81 0.36 0.45 1 1.65 7.897 109.77 9.78 9 0.61% 2.7 71% 1.59 0.00 1.59 0 0.92 0.05 0.97 1.0 0.052 33.49 43.27 0.071 1.38 0.93 0.18 0.80 1.14 1.0 0.036 3.91 38.23 0.082 3.78 2.58 2 8.76 460 1.8E-03 3.7E+02 4.2E-04 16 0.480 5500 0.16% 2.00 0.65 0.03%0.027 0.34 0.079 0.765 4.13% 0.0068
14.271 5594.43 9.8 0.045 9.6 29.9 12.96 0.46%Sand-Slime Tailing 0.059 119.0 0.82 0.36 0.46 1 1.64 15.784 219.40 18.69 20 0.50% 2.4 47% 1.60 0.00 1.60 0 0.92 0.05 0.97 1.0 0.052 36.86 55.54 0.083 1.61 0.93 0.25 0.80 1.13 1.0 0.036 2.17 40.47 0.084 3.83 2.72 2 8.81 460 1.8E-03 3.9E+02 4.0E-04 10 0.229 6656 0.14% 2.00 0.65 0.03% 0.024 0.34 0.079 0.765 3.63% 0.0059
14.436 5594.26 8.9 0.082 8.9 8.8 3.82 0.92%Sand-Slime Tailing 0.059 119.0 0.83 0.37 0.46 1 1.63 14.408 200.27 16.84 17 1.01% 2.5 47% 1.61 0.00 1.61 0 0.92 0.05 0.97 1.0 0.051 36.21 53.04 0.080 1.56 0.93 0.24 0.80 1.13 1.0 0.036 2.99 50.37 0.092 4.16 2.86 2 8.86 460 1.8E-03 3.9E+02 4.0E-04 10 0.229 6640 0.14% 2.00 0.65 0.03% 0.024 0.34 0.079 0.765 3.67% 0.0060
14.600 5594.10 6.1 0.065 6.0 10.0 4.33 1.07%Slime Tailings 0.057 113.1 0.84 0.37 0.47 1 1.61 9.689 134.68 11.37 11 1.24% 2.8 71% 1.62 0.00 1.62 0 0.92 0.05 0.97 1.0 0.052 34.05 45.42 0.073 1.42 0.93 0.19 0.80 1.13 1.0 0.036 4.41 50.17 0.092 4.12 2.77 2 8.91 500 1.8E-03 4.4E+02 3.6E-04 16 0.481 5460 0.11% 2.00 0.65 0.03% 0.019 0.34 0.079 0.765 2.91% 0.0048
14.764 5593.94 6.3 0.071 6.2 13.9 6.00 1.13%Slime Tailings 0.057 113.1 0.85 0.38 0.47 1 1.60 9.927 137.98 11.69 12 1.31% 2.8 71% 1.63 0.00 1.63 0 0.92 0.05 0.97 1.0 0.051 34.16 45.85 0.074 1.43 0.93 0.20 0.80 1.13 1.0 0.036 4.41 51.51 0.093 4.13 2.78 2 8.96 500 1.8E-03 4.4E+02 3.6E-04 16 0.481 5447 0.11% 2.00 0.65 0.03% 0.019 0.34 0.079 0.765 2.94% 0.0048
14.928 5593.77 9.5 0.050 9.4 12.9 5.57 0.53%Sand-Slime Tailing 0.059 119.0 0.86 0.38 0.48 1 1.59 15.023 208.82 17.60 18 0.58% 2.4 47% 1.64 0.00 1.64 0 0.92 0.05 0.97 1.0 0.051 36.47 54.07 0.082 1.59 0.93 0.24 0.80 1.13 1.0 0.036 2.38 41.96 0.085 3.75 2.67 2 9.01 500 1.8E-03 4.6E+02 3.5E-04 10 0.230 6592 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.51% 0.0041
15.092 5593.61 8.2 0.031 8.1 11.9 5.14 0.38%Sand-Slime Tailing 0.059 119.0 0.87 0.39 0.48 1 1.58 12.809 178.04 15.01 15 0.42% 2.4 47% 1.65 0.00 1.65 0 0.91 0.05 0.97 1.0 0.051 35.57 50.58 0.078 1.52 0.93 0.22 0.80 1.12 1.0 0.037 2.48 37.18 0.081 3.54 2.53 2 9.06 500 1.8E-03 4.6E+02 3.5E-04 10 0.231 6576 0.09% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.53% 0.0042
15.256 5593.44 12.5 0.026 12.4 11.9 5.14 0.21%Sand-Slime Tailing 0.059 119.0 0.88 0.39 0.48 1 1.56 19.333 268.72 22.59 24 0.22% 2.2 47% 1.66 0.00 1.66 0 0.91 0.05 0.96 1.0 0.051 38.22 60.81 0.089 1.74 0.93 0.27 0.80 1.12 1.0 0.037 1.59 35.90 0.080 3.46 2.60 2 9.11 500 1.8E-03 4.6E+02 3.5E-04 10 0.231 6560 0.09% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.56% 0.0042
15.420 5593.28 13.4 0.032 13.4 10.3 4.47 0.24%Sand-Slime Tailing 0.059 119.0 0.89 0.40 0.49 1 1.54 20.554 285.71 23.99 26 0.26% 2.2 47% 1.67 0.00 1.67 0 0.91 0.06 0.96 1.0 0.051 38.71 62.70 0.091 1.79 0.93 0.28 0.80 1.12 1.0 0.037 1.56 37.47 0.081 3.49 2.64 2 9.16 500 1.8E-03 4.6E+02 3.5E-04 10 0.231 6544 0.10% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.59% 0.0043
15.584 5593.12 13.2 0.032 13.1 11.4 4.95 0.24%Sand-Slime Tailing 0.059 119.0 0.90 0.40 0.49 1 1.53 20.065 278.90 23.43 25 0.26% 2.2 47% 1.68 0.00 1.68 0 0.91 0.05 0.96 1.0 0.051 38.52 61.95 0.090 1.77 0.93 0.28 0.80 1.12 1.0 0.037 1.59 37.37 0.081 3.46 2.62 2 9.21 500 1.8E-03 4.6E+02 3.5E-04 10 0.232 6528 0.10% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.62% 0.0043
15.748 5592.95 12.9 0.034 12.9 12.5 5.42 0.26%Sand-Slime Tailing 0.059 119.0 0.91 0.41 0.50 1 1.52 19.566 271.97 22.86 24 0.28% 2.2 47% 1.69 0.00 1.69 0 0.91 0.05 0.96 1.0 0.051 38.32 61.18 0.089 1.76 0.93 0.28 0.80 1.12 1.0 0.037 1.65 37.72 0.081 3.44 2.60 2 9.26 500 1.8E-03 4.6E+02 3.6E-04 10 0.232 6512 0.10% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.65% 0.0044
15.912 5592.79 13.3 0.033 13.2 12.9 5.61 0.25%Sand-Slime Tailing 0.059 119.0 0.92 0.41 0.50 1 1.51 19.983 277.76 23.35 25 0.27% 2.2 47% 1.70 0.00 1.70 0 0.91 0.05 0.96 1.0 0.051 38.49 61.84 0.090 1.78 0.93 0.28 0.80 1.11 1.0 0.037 1.61 37.58 0.081 3.41 2.59 2 9.31 500 1.8E-03 4.6E+02 3.6E-04 10 0.232 6497 0.10% 2.00 0.65 0.03% 0.018 0.34 0.079 0.765 2.68% 0.0044
16.076 5592.62 12.7 0.033 12.6 12.9 5.58 0.26%Sand-Slime Tailing 0.059 119.0 0.93 0.42 0.51 1 1.50 18.976 263.76 22.18 23 0.28% 2.2 47% 1.71 0.00 1.71 0 0.91 0.05 0.96 1.0 0.051 38.08 60.26 0.088 1.75 0.92 0.27 0.80 1.11 1.0 0.037 1.69 37.43 0.081 3.38 2.56 2 9.36 500 1.8E-03 4.6E+02 3.6E-04 10 0.233 6481 0.10% 2.00 0.65 0.03% 0.018 0.34 0.079 0.765 2.71% 0.0045
16.240 5592.46 12.7 0.036 12.6 13.1 5.68 0.28%Sand-Slime Tailing 0.059 119.0 0.93 0.42 0.51 1 1.49 18.852 262.04 22.04 23 0.31% 2.2 47% 1.72 0.00 1.72 0 0.91 0.05 0.96 1.0 0.050 38.03 60.07 0.088 1.74 0.92 0.27 0.80 1.11 1.0 0.037 1.73 38.09 0.082 3.38 2.56 2 9.41 500 1.8E-03 4.6E+02 3.6E-04 10 0.233 6466 0.10% 2.00 0.65 0.03% 0.018 0.34 0.079 0.765 2.74% 0.0045
16.404 5592.30 13.4 0.038 13.3 13.6 5.91 0.28%Sand-Slime Tailing 0.059 119.0 0.94 0.43 0.52 1 1.48 19.694 273.75 23.02 24 0.31% 2.2 47% 1.73 0.00 1.73 0 0.90 0.05 0.96 1.0 0.050 38.38 61.39 0.089 1.78 0.92 0.28 0.80 1.11 1.0 0.037 1.68 38.59 0.082 3.37 2.57 2 9.46 500 1.8E-03 4.6E+02 3.6E-04 10 0.233 6451 0.10% 2.00 0.65 0.03% 0.018 0.34 0.079 0.765 2.78% 0.0046
16.568 5592.13 14.1 0.045 14.0 13.7 5.93 0.32%Sand-Slime Tailing 0.059 119.0 0.95 0.43 0.52 1 1.46 20.524 285.29 23.98 25 0.34% 2.2 47% 1.74 0.00 1.74 0 0.90 0.06 0.96 1.0 0.050 38.71 62.70 0.091 1.81 0.92 0.28 0.80 1.11 1.0 0.037 1.67 40.09 0.083 3.39 2.60 2 9.51 500 1.8E-03 4.6E+02 3.7E-04 10 0.234 6436 0.10% 2.00 0.65 0.03% 0.018 0.34 0.079 0.765 2.81% 0.0046
16.732 5591.97 13.5 0.052 13.4 13.7 5.93 0.39%Sand-Slime Tailing 0.059 119.0 0.96 0.44 0.53 1 1.46 19.527 271.42 22.82 24 0.42% 2.3 47% 1.75 0.00 1.75 0 0.90 0.05 0.96 1.0 0.050 38.31 61.13 0.089 1.78 0.92 0.28 0.80 1.10 1.0 0.037 1.82 41.47 0.085 3.42 2.60 2 9.56 500 1.8E-03 4.6E+02 3.7E-04 10 0.234 6421 0.10% 2.00 0.65 0.03% 0.019 0.34 0.079 0.765 2.84% 0.0047
16.896 5591.80 13.5 0.050 13.5 14.1 6.13 0.37%Sand-Slime Tailing 0.059 119.0 0.97 0.44 0.53 1 1.45 19.512 271.22 22.81 24 0.40% 2.3 47% 1.76 0.00 1.76 0 0.90 0.05 0.96 1.0 0.050 38.30 61.11 0.089 1.78 0.92 0.28 0.80 1.10 1.0 0.037 1.80 41.05 0.084 3.38 2.58 2 9.61 500 1.8E-03 4.6E+02 3.7E-04 10 0.234 6406 0.11% 2.00 0.65 0.03% 0.019 0.34 0.079 0.765 2.87% 0.0047
17.060 5591.64 14.2 0.052 14.1 14.4 6.25 0.37%Sand-Slime Tailing 0.059 119.0 0.98 0.45 0.54 1 1.44 20.251 281.48 23.67 25 0.39% 2.2 47% 1.77 0.00 1.77 0 0.90 0.05 0.96 1.0 0.050 38.60 62.27 0.090 1.81 0.92 0.28 0.80 1.10 1.0 0.037 1.75 41.43 0.085 3.36 2.59 2 9.66 500 1.8E-03 4.6E+02 3.7E-04 10 0.235 6391 0.11% 2.00 0.65 0.03% 0.019 0.34 0.079 0.765 2.90% 0.0048
17.224 5591.48 15.7 0.057 15.6 14.5 6.26 0.36%Sand-Slime Tailing 0.059 119.0 0.99 0.45 0.54 1 1.42 22.160 308.02 25.89 27 0.39% 2.2 47% 1.78 0.00 1.78 0 0.90 0.06 0.96 1.0 0.050 39.38 65.27 0.094 1.88 0.91 0.29 0.80 1.10 1.0 0.037 1.64 42.48 0.085 3.38 2.63 2 9.71 500 1.8E-03 4.6E+02 3.7E-04 10 0.235 6377 0.11% 2.00 0.65 0.03% 0.019 0.34 0.079 0.765 2.93% 0.0048
P = γeff*(Geff
/Gmax)
(tsf)
Volumetric Strain for Design Event, εv (%)
Incrementa
l Consolidation (ft)
CN
Volumetric
Strain for
Design
Event, εv (%)
Incremental Consolidation (ft)
TOTAL SEISMIC SETTLEMENT (FT):
Midpoint Depth at t1, z1
Shear Wave Velocity, Vs
Soil Density, ρ (tcf)b
Threshhol
d Shear Strain, γtv
(%)
Volumetri
c Strain at
15 Cycles,
εc-15 (%)Rc
Plasticity Index, PI g1 g2
Shear Strain, γ (%)a
Effective Stress at Bottom of Layer
Effective Stress at Midpoint of Layer FINAL COVER
Erosion Protection Layer
Water Storage/Rooting Zone Layer
qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Equil Pore Pressure at Midpoint of Layer (tsf)
Max Shear
Strain
Modulus,
Gmax (tsf)
Unit Weight (tcf)
Unit Weight (pcf)
Total Stress at Bottom of Layer
Total Stress at Midpoint of Layer
Equil Pore Pressure at Bottom of Layer
Cyclic Resistance Ratio
FoS
Cyclic Stress Ratio
FoS
∆qc1n qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Threshhol
d Shear
Strain, γtv (%)
Volumetric Strain at 15 Cycles, εc-15 (%)RcCNg1g2
Shear
Strain, γ ab
Seismic Settlement Analysis - Stewart et al (2004)
Shear Wave Velocity, Vs
High Compaction Layer
Platform/Random Fill Layer
Pw (u2)Pw (u2)
2013 CPT Data from ConeTec CPT Data Interpretations
fs/qt
Material
Type (as determined by fines
Unit Weight Unit Weight
Total
Stress
at time of CPT
Depth
at time of CPT Elevation qt fs qc
Effective
Stress at
time of CPT
Saturated
at time of CPT
Type Index,
Ic FC
Youd, et al (2001)
Max. Horiz. Acceleration, Amax/g: 0.15
Earthquake Moment Magnitude, M:
Idriss and Boulanger (2008)
Max. Horiz. Acceleration, Amax/g:
Earthquake Moment Magnitude, M:
Magnitude Scaling Factor, MSF:
WHITE MESA TAILINGS REPOSITORY LIQUEFACTION AND SEISMIC SETTLEMENT ANALYSES - 3-4N Elev. at Top of Layer (ft)
Elev. At Midpoint of Layer (ft)
Elev. At Bottom of Layer
Thickness of Layer (ft)
5.5
Magnitude Scaling Factor, MSF:
Equil
Pore
Pressure at time of
Conditions at t1 Liquefaction Triggering AnalysesEquil
Pore Pressure at t1CN qc1 qc1 qc1N
Normalized
Cone
Penetration Resistance, Qt
Normalize
d Friction
Ratio, Fr (%)
Total Stress at t1 Liquefiable?1=Yes
2=No
Cyclic Stress RatioEffective Stress at t1
Saturated at t1
Idriss & Boulanger (2008)
CSR
M=7.5,
s'v=1atm
Kc
Scaling Factor for stress ration, rm
Volumetric Strain Ratio for Site-Specific Design Eart
Equiv. Number of Uniform Strain Cycles, N
Youd et al. (2001)
CSR
M=7.5,
s'v=1atm
Depth at t1, z1
Soil Density, ρ
Maximum Shear Strain
Modulus,
Gmax
P =
γeff*(Geff/Gmax)
Plastici
ty Index, PI
Liquef_SeismicSettle_30Aug2015.xls Page 24 of 29
Energy Fuels Resources (USA) Inc.White Mesa Mill
Seismic Settlement Analyses
Data File: 13-52106_SP3-4N-BSC-CPT 5606.00 Water surface elevation during CPT investigation (ft 5608.70 Ground Surface Elevation at time of CPT (ft amsl)
Location: White Mesa 2013 CPT Investigation 0.15 5600.42 Water surface elevation at t0 (ft amsl)5623.35 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl)
..\..\..\6.2.3 Field Data\2013 Field Investigation\Conetec Dat 5.5 5583.71 Water surface elevation at t1 (ft amsl) 0.50 Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after pla ###### 5623.1 5622.85 0.50 0.055 110 0.028 0.014 0.00 0.00 0.028 0.014 0.08 508 1.7E-03 4.4E+02 3.0E-06 11 0.068 46696 0.00% 1.20 0.80 0.04% 0.000 0.32 0.133 0.778 0.00% 0.0000
Tailings Sands 1.69 5578.71 Water surface elevation at t2 (ft amsl)3.50 Thickness of Water Storage/Rooting Zone (ft)###### 5621.1 5619.35 3.50 0.054 107 0.215 0.121 0.00 0.00 0.215 0.121 0.69 508 1.7E-03 4.3E+02 2.8E-05 11 0.118 18930 0.00% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
Tailings Sand-Slimes 3.50 Thickness of High Compaction Layer (ft)###### 5617.6 5615.85 3.50 0.060 120 0.424 0.320 0.00 0.00 0.424 0.320 1.75 508 1.9E-03 4.8E+02 6.5E-05 11 0.152 12657 0.01% 0.65 0.75 0.02% 0.000 0.34 0.079 0.765 0.00% 0.0000
Tailings Slimes 1.44 7.15 Thickness of Random/Platform Fill on on top of existing interim cover (ft) ###### 5612.28 5608.70 7.15 0.050 101 0.784 0.604 0.00 0.00 0.784 0.604 3.38 508 1.6E-03 4.0E+02 1.5E-04 11 0.178 9715 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
Interim Cover 0.47 1565.99 Additional Stress due to Final Cover Placement, ΔσFC (psf)
Cells Requiring User Input/Manipulation 2.21 2.21 7.51 5578.71 Elevation of bottom of tailings (liner) (ft amsl)
0.623
rd Cσ Kσ Ka rd Dr f Kσ Ka Avg
(ft) (ft amsl) TSF TSF TSF (ft) PSI (%) (tcf) (pcf) (tsf)(tsf)(tsf) 1=Yes TSF MPa % (tsf)(tsf)(tsf) 1=Yes FoS m
0=No 0=No (ft/sec) (tcf) tsf tsf (%)
P = γeff*(Geff
/Gmax)
(tsf)
Volumetric Strain for Design Event, εv (%)
Incrementa
l Consolidation (ft)
CN
Volumetric
Strain for
Design
Event, εv (%)
Incremental Consolidation (ft)
TOTAL SEISMIC SETTLEMENT (FT):
Midpoint Depth at t1, z1
Shear Wave Velocity, Vs
Soil Density, ρ (tcf)b
Threshhol
d Shear Strain, γtv
(%)
Volumetri
c Strain at
15 Cycles,
εc-15 (%)Rc
Plasticity Index, PI g1 g2
Shear Strain, γ (%)a
Effective Stress at Bottom of Layer
Effective Stress at Midpoint of Layer FINAL COVER
Erosion Protection Layer
Water Storage/Rooting Zone Layer
qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Equil Pore Pressure at Midpoint of Layer (tsf)
Max Shear
Strain
Modulus,
Gmax (tsf)
Unit Weight (tcf)
Unit Weight (pcf)
Total Stress at Bottom of Layer
Total Stress at Midpoint of Layer
Equil Pore Pressure at Bottom of Layer
Cyclic Resistance Ratio
FoS
Cyclic Stress Ratio
FoS
∆qc1n qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Threshhol
d Shear
Strain, γtv (%)
Volumetric Strain at 15 Cycles, εc-15 (%)RcCNg1g2
Shear
Strain, γ ab
Seismic Settlement Analysis - Stewart et al (2004)
Shear Wave Velocity, Vs
High Compaction Layer
Platform/Random Fill Layer
Pw (u2)Pw (u2)
2013 CPT Data from ConeTec CPT Data Interpretations
fs/qt
Material
Type (as determined by fines
Unit Weight Unit Weight
Total
Stress
at time of CPT
Depth
at time of CPT Elevation qt fs qc
Effective
Stress at
time of CPT
Saturated
at time of CPT
Type Index,
Ic FC
Youd, et al (2001)
Max. Horiz. Acceleration, Amax/g: 0.15
Earthquake Moment Magnitude, M:
Idriss and Boulanger (2008)
Max. Horiz. Acceleration, Amax/g:
Earthquake Moment Magnitude, M:
Magnitude Scaling Factor, MSF:
WHITE MESA TAILINGS REPOSITORY LIQUEFACTION AND SEISMIC SETTLEMENT ANALYSES - 3-4N Elev. at Top of Layer (ft)
Elev. At Midpoint of Layer (ft)
Elev. At Bottom of Layer
Thickness of Layer (ft)
5.5
Magnitude Scaling Factor, MSF:
Equil
Pore
Pressure at time of
Conditions at t1 Liquefaction Triggering AnalysesEquil
Pore Pressure at t1CN qc1 qc1 qc1N
Normalized
Cone
Penetration Resistance, Qt
Normalize
d Friction
Ratio, Fr (%)
Total Stress at t1 Liquefiable?1=Yes
2=No
Cyclic Stress RatioEffective Stress at t1
Saturated at t1
Idriss & Boulanger (2008)
CSR
M=7.5,
s'v=1atm
Kc
Scaling Factor for stress ration, rm
Volumetric Strain Ratio for Site-Specific Design Eart
Equiv. Number of Uniform Strain Cycles, N
Youd et al. (2001)
CSR
M=7.5,
s'v=1atm
Depth at t1, z1
Soil Density, ρ
Maximum Shear Strain
Modulus,
Gmax
P =
γeff*(Geff/Gmax)
Plastici
ty Index, PI
17.388 5591.31 16.7 0.068 16.6 14.7 6.37 0.41%Sand-Slime Tailing 0.059 119.0 1.00 0.46 0.54 1 1.40 23.276 323.53 27.18 29 0.43% 2.2 47% 1.79 0.00 1.79 0 0.90 0.06 0.96 1.0 0.050 39.84 67.02 0.096 1.93 0.91 0.30 0.80 1.10 1.0 0.037 1.63 44.44 0.087 3.42 2.67 2 9.76 500 1.8E-03 4.6E+02 3.8E-04 10 0.235 6362 0.11% 2.00 0.65 0.03% 0.019 0.34 0.079 0.765 2.96% 0.0049
17.552 5591.15 17.4 0.079 17.3 15.0 6.49 0.45%Sand-Slime Tailing 0.059 119.0 1.01 0.46 0.55 1 1.39 24.051 334.31 28.09 30 0.48% 2.2 47% 1.80 0.00 1.80 0 0.90 0.06 0.96 1.0 0.050 40.15 68.24 0.097 1.96 0.91 0.31 0.80 1.09 1.0 0.037 1.65 46.24 0.089 3.45 2.71 2 9.81 500 1.8E-03 4.6E+02 3.8E-04 10 0.236 6348 0.11% 2.00 0.65 0.03% 0.020 0.34 0.079 0.765 2.99% 0.0049
17.716 5590.98 17.4 0.085 17.3 15.1 6.52 0.49%Sand-Slime Tailing 0.059 119.0 1.02 0.47 0.55 1 1.38 24.003 333.64 28.03 30 0.52% 2.2 47% 1.81 0.00 1.81 0 0.89 0.06 0.96 1.0 0.050 40.13 68.16 0.097 1.97 0.91 0.31 0.80 1.09 1.0 0.037 1.68 47.14 0.089 3.45 2.71 2 9.86 500 1.8E-03 4.6E+02 3.8E-04 10 0.236 6334 0.11% 2.00 0.65 0.03% 0.020 0.34 0.079 0.765 3.02% 0.0050
17.880 5590.82 16.7 0.082 16.7 15.2 6.57 0.49%Sand-Slime Tailing 0.059 119.0 1.03 0.47 0.56 1 1.38 22.974 319.34 26.83 28 0.52% 2.2 47% 1.82 0.00 1.82 0 0.89 0.06 0.96 1.0 0.049 39.71 66.55 0.095 1.93 0.91 0.30 0.80 1.09 1.0 0.037 1.74 46.63 0.089 3.42 2.67 2 9.91 500 1.8E-03 4.6E+02 3.8E-04 10 0.236 6319 0.11% 2.00 0.65 0.03% 0.020 0.34 0.079 0.765 3.05% 0.0050
18.044 5590.66 15.6 0.083 15.5 15.5 6.70 0.53%Sand-Slime Tailing 0.059 119.0 1.04 0.48 0.56 1 1.38 21.358 296.87 24.96 26 0.57% 2.3 47% 1.83 0.00 1.83 0 0.89 0.06 0.96 1.0 0.049 39.06 64.02 0.092 1.87 0.91 0.29 0.80 1.09 1.0 0.037 1.88 46.89 0.089 3.40 2.64 2 9.96 500 1.8E-03 4.6E+02 3.9E-04 10 0.237 6305 0.11% 2.00 0.65 0.03% 0.020 0.34 0.079 0.765 3.09% 0.0051
18.208 5590.49 15.5 0.082 15.4 15.8 6.83 0.53%Sand-Slime Tailing 0.059 119.0 1.05 0.48 0.57 1 1.37 21.066 292.82 24.62 25 0.57% 2.3 47% 1.83 0.00 1.83 0 0.89 0.06 0.96 1.0 0.049 38.94 63.56 0.092 1.86 0.91 0.29 0.80 1.09 1.0 0.037 1.90 46.75 0.089 3.37 2.62 2 10.01 500 1.8E-03 4.6E+02 3.9E-04 10 0.237 6291 0.12% 2.00 0.65 0.03% 0.020 0.34 0.079 0.765 3.12% 0.0051
18.372 5590.33 15.5 0.076 15.4 15.9 6.89 0.49%Sand-Slime Tailing 0.059 119.0 1.06 0.49 0.57 1 1.36 21.021 292.19 24.57 25 0.53% 2.3 47% 1.84 0.00 1.84 0 0.89 0.06 0.96 1.0 0.049 38.92 63.49 0.092 1.86 0.91 0.29 0.80 1.08 1.0 0.037 1.86 45.70 0.088 3.32 2.59 2 10.06 500 1.8E-03 4.6E+02 3.9E-04 10 0.237 6278 0.12% 2.00 0.65 0.03% 0.021 0.34 0.079 0.765 3.15% 0.0052
18.537 5590.16 15.0 0.075 14.9 15.9 6.90 0.50%Sand-Slime Tailing 0.059 119.0 1.07 0.49 0.58 1 1.36 20.261 281.63 23.69 24 0.54% 2.3 47% 1.85 0.00 1.85 0 0.89 0.05 0.96 1.0 0.049 38.61 62.30 0.090 1.84 0.90 0.28 0.80 1.08 1.0 0.037 1.93 45.62 0.088 3.29 2.57 2 10.11 500 1.8E-03 4.6E+02 3.9E-04 10 0.238 6264 0.12% 2.00 0.65 0.03% 0.021 0.34 0.079 0.765 3.18% 0.0052
18.701 5590.00 14.3 0.060 14.2 15.9 6.90 0.42%Sand-Slime Tailing 0.059 119.0 1.08 0.50 0.58 1 1.35 19.251 267.59 22.51 23 0.45% 2.3 47% 1.86 0.00 1.86 0 0.89 0.05 0.96 1.0 0.049 38.20 60.71 0.089 1.80 0.90 0.27 0.80 1.08 1.0 0.037 1.91 42.96 0.086 3.19 2.50 2 10.16 500 1.8E-03 4.6E+02 3.9E-04 10 0.238 6250 0.12% 2.00 0.65 0.03% 0.021 0.34 0.079 0.765 3.21% 0.0053
18.865 5589.84 14.4 0.060 14.3 15.9 6.90 0.42%Sand-Slime Tailing 0.059 119.0 1.09 0.50 0.59 1 1.34 19.229 267.28 22.49 23 0.45% 2.3 47% 1.87 0.00 1.87 0 0.89 0.05 0.96 1.0 0.049 38.19 60.68 0.089 1.81 0.90 0.27 0.80 1.08 1.0 0.037 1.91 42.95 0.086 3.17 2.49 2 10.21 500 1.8E-03 4.6E+02 4.0E-04 10 0.238 6237 0.12% 2.00 0.65 0.03% 0.021 0.34 0.079 0.765 3.24% 0.0053
19.029 5589.67 13.4 0.061 13.3 15.9 6.87 0.46%Sand-Slime Tailing 0.059 119.0 1.10 0.51 0.59 1 1.34 17.843 248.02 20.88 21 0.50% 2.3 47% 1.88 0.00 1.88 0 0.88 0.05 0.96 1.0 0.049 37.62 58.50 0.086 1.76 0.90 0.26 0.80 1.08 1.0 0.037 2.08 43.40 0.086 3.16 2.46 2 10.26 500 1.8E-03 4.6E+02 4.0E-04 10 0.239 6223 0.12% 2.00 0.65 0.03% 0.021 0.34 0.079 0.765 3.28% 0.0054
19.193 5589.51 13.3 0.066 13.2 16.5 7.15 0.50%Sand-Slime Tailing 0.059 119.0 1.11 0.51 0.60 1 1.33 17.561 244.10 20.56 20 0.54% 2.4 47% 1.89 0.00 1.89 0 0.88 0.05 0.96 1.0 0.049 37.51 58.07 0.086 1.75 0.90 0.26 0.80 1.08 1.0 0.037 2.16 44.45 0.087 3.17 2.46 2 10.31 500 1.8E-03 4.6E+02 4.0E-04 10 0.239 6210 0.12% 2.00 0.65 0.03% 0.022 0.34 0.079 0.765 3.31% 0.0054
19.357 5589.34 13.3 0.073 13.2 16.6 7.18 0.55%Sand-Slime Tailing 0.059 119.0 1.12 0.52 0.60 1 1.33 17.469 242.81 20.45 20 0.60% 2.4 47% 1.90 0.00 1.90 0 0.88 0.05 0.96 1.0 0.049 37.47 57.92 0.086 1.75 0.90 0.26 0.80 1.07 1.0 0.037 2.24 45.86 0.088 3.20 2.47 2 10.36 500 1.8E-03 4.6E+02 4.0E-04 10 0.239 6197 0.13% 2.00 0.65 0.03% 0.022 0.34 0.079 0.765 3.34% 0.0055
19.521 5589.18 13.2 0.076 13.1 16.9 7.33 0.58%Sand-Slime Tailing 0.059 119.0 1.13 0.52 0.61 1 1.32 17.192 238.98 20.13 20 0.63% 2.4 47% 1.91 0.00 1.91 0 0.88 0.05 0.96 1.0 0.049 37.36 57.49 0.085 1.75 0.90 0.26 0.80 1.07 1.0 0.037 2.31 46.52 0.089 3.20 2.47 2 10.41 500 1.8E-03 4.6E+02 4.0E-04 10 0.240 6184 0.13% 2.00 0.65 0.03% 0.022 0.34 0.079 0.765 3.37% 0.0055
19.685 5589.02 13.3 0.078 13.2 17.3 7.51 0.59%Sand-Slime Tailing 0.059 119.0 1.14 0.53 0.61 1 1.31 17.260 239.92 20.21 20 0.64% 2.4 47% 1.92 0.00 1.92 0 0.88 0.05 0.96 1.0 0.049 37.39 57.60 0.085 1.75 0.89 0.26 0.80 1.07 1.0 0.037 2.32 46.87 0.089 3.19 2.47 2 10.46 538 1.8E-03 5.3E+02 3.5E-04 10 0.240 6171 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.39% 0.0039
19.849 5588.85 14.4 0.075 14.3 17.5 7.57 0.52%Sand-Slime Tailing 0.059 119.0 1.15 0.54 0.61 1 1.30 18.534 257.63 21.69 22 0.57% 2.3 47% 1.93 0.00 1.93 0 0.88 0.05 0.96 1.0 0.049 37.91 59.60 0.087 1.80 0.89 0.27 0.80 1.07 1.0 0.037 2.11 45.87 0.088 3.14 2.47 2 10.51 538 1.8E-03 5.3E+02 3.5E-04 10 0.240 6158 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.41% 0.0040
20.013 5588.69 17.2 0.080 17.1 18.1 7.83 0.47%Sand-Slime Tailing 0.059 119.0 1.16 0.54 0.62 1 1.28 21.877 304.09 25.58 26 0.50% 2.3 47% 1.94 0.00 1.94 0 0.88 0.06 0.95 1.0 0.048 39.27 64.85 0.093 1.93 0.89 0.29 0.80 1.07 1.0 0.037 1.81 46.18 0.088 3.13 2.53 2 10.56 538 1.8E-03 5.3E+02 3.5E-04 10 0.240 6145 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.44% 0.0040
20.177 5588.52 20.3 0.100 20.2 18.0 7.79 0.49%Sand-Slime Tailing 0.059 119.0 1.17 0.55 0.62 1 1.26 25.566 355.37 29.86 31 0.52% 2.2 47% 1.95 0.00 1.95 0 0.87 0.06 0.95 1.0 0.048 40.77 70.63 0.100 2.09 0.89 0.32 0.80 1.07 1.0 0.037 1.65 49.26 0.091 3.20 2.64 2 10.61 538 1.8E-03 5.3E+02 3.6E-04 10 0.241 6132 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.46% 0.0040
20.341 5588.36 21.7 0.131 21.6 18.0 7.79 0.60%Sand-Slime Tailing 0.059 119.0 1.18 0.55 0.63 1 1.25 27.037 375.81 31.57 33 0.64% 2.2 47% 1.96 0.00 1.96 0 0.87 0.06 0.95 1.0 0.048 41.37 72.94 0.103 2.15 0.89 0.32 0.80 1.07 1.0 0.037 1.69 53.33 0.094 3.29 2.72 2 10.66 538 1.8E-03 5.3E+02 3.6E-04 10 0.241 6119 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.48% 0.0041
20.505 5588.20 22.7 0.153 22.6 18.4 7.99 0.67%Sand-Slime Tailing 0.059 119.0 1.19 0.56 0.63 1 1.24 28.112 390.75 32.82 34 0.71% 2.2 47% 1.97 0.00 1.97 0 0.87 0.06 0.95 1.0 0.048 41.81 74.63 0.105 2.20 0.89 0.33 0.80 1.06 1.0 0.037 1.71 55.97 0.096 3.35 2.77 2 10.71 538 1.8E-03 5.3E+02 3.6E-04 10 0.241 6107 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.51% 0.0041
20.669 5588.03 23.1 0.172 23.0 18.7 8.09 0.74%Sand-Slime Tailing 0.059 119.0 1.20 0.56 0.64 1 1.24 28.492 396.03 33.26 34 0.78% 2.2 47% 1.98 0.00 1.98 0 0.87 0.06 0.95 1.0 0.048 41.97 75.22 0.106 2.22 0.89 0.33 0.80 1.06 1.0 0.037 1.75 58.12 0.098 3.39 2.81 2 10.76 538 1.8E-03 5.3E+02 3.6E-04 10 0.242 6094 0.09% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.53% 0.0042
20.833 5587.87 23.6 0.180 23.5 18.7 8.09 0.76%Sand-Slime Tailing 0.059 119.0 1.21 0.57 0.64 1 1.23 28.892 401.60 33.72 35 0.80% 2.2 47% 1.99 0.00 1.99 0 0.87 0.06 0.95 1.0 0.048 42.13 75.85 0.107 2.24 0.89 0.34 0.80 1.06 1.0 0.037 1.75 58.98 0.099 3.40 2.82 2 10.81 538 1.8E-03 5.3E+02 3.6E-04 10 0.242 6082 0.09% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.56% 0.0042
20.997 5587.70 23.1 0.180 23.0 18.8 8.16 0.78%Sand-Slime Tailing 0.059 119.0 1.22 0.57 0.65 1 1.23 28.155 391.36 32.87 34 0.82% 2.2 47% 2.00 0.00 2.00 0 0.87 0.06 0.95 1.0 0.048 41.83 74.70 0.106 2.22 0.88 0.33 0.80 1.06 1.0 0.037 1.79 58.98 0.099 3.38 2.80 2 10.86 538 1.8E-03 5.3E+02 3.6E-04 10 0.242 6070 0.09% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.58% 0.004221.161 5587.54 23.7 0.180 23.6 19.2 8.33 0.76%Sand-Slime Tailing 0.059 119.0 1.23 0.58 0.65 1 1.22 28.695 398.86 33.50 34 0.80% 2.2 47% 2.01 0.00 2.01 0 0.87 0.06 0.95 1.0 0.048 42.05 75.55 0.107 2.24 0.88 0.33 0.80 1.06 1.0 0.037 1.76 58.94 0.099 3.36 2.80 2 10.91 538 1.8E-03 5.3E+02 3.7E-04 10 0.243 6057 0.10% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.61% 0.0043
29.990 5578.71 Sand-Slime Tailing 0.059 119.0 2.54 0.02 2.52 1 13.61 594 1.8E-03 6.5E+02 3.8E-04 10 0.257 5518 0.09% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.54% 0.2245
Extra layer added to analyze seismic settlement of tailings below the bottom of CPT investigation.
Liquef_SeismicSettle_30Aug2015.xls Page 25 of 29
Energy Fuels Resources (USA) Inc.White Mesa Mill
Seismic Settlement Analyses
Data File: 13-52106_SP3-6N-BSC-CPT 5604.20 Water surface elevation during CPT investigation (ft am5607.44 Ground Surface Elevation at time of CPT (ft amsl)
Location: White Mesa 2013 CPT Investigation 0.15 5599.16 Water surface elevation at t0 (ft amsl)5623.62 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl)
..\..\..\6.2.3 Field Data\2013 Field Investigation\Conetec Dat 5.5 5590.44 Water surface elevation at t1 (ft amsl) 0.50 Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after plac ###### 5623.37 5623.12 0.50 0.055 110 0.028 0.014 0.00 0.00 0.028 0.014 0.08 508 1.7E-03 4.4E+02 3.0E-06 11 0.068 46696 0.00% 1.20 0.80 0.04% 0.000 0.32 0.133 0.778 0.00% 0.0000
Tailings Sands 1.69 5585.44 Water surface elevation at t2 (ft amsl)3.50 Thickness of Water Storage/Rooting Zone (ft)###### 5621.37 5619.62 3.50 0.054 107 0.215 0.121 0.00 0.00 0.215 0.121 0.69 508 1.7E-03 4.3E+02 2.8E-05 11 0.118 18930 0.00% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
Tailings Sand-Slimes 3.50 Thickness of High Compaction Layer (ft)###### 5617.87 5616.12 3.50 0.060 120 0.424 0.320 0.00 0.00 0.424 0.320 1.75 508 1.9E-03 4.8E+02 6.5E-05 11 0.152 12657 0.01% 0.65 0.75 0.02% 0.000 0.34 0.079 0.765 0.00% 0.0000
Tailings Slimes 1.44 8.68 Thickness of Random/Platform Fill on on top of existing interim cover (ft) ###### 5611.78 5607.44 8.68 0.050 101 0.861 0.643 0.00 0.00 0.861 0.643 3.61 508 1.6E-03 4.0E+02 1.6E-04 11 0.181 9468 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
Interim Cover 0.47 1720.10 Additional Stress due to Final Cover Placement, ΔσFC (psf)
Cells Requiring User Input/Manipulation 2.21 2.21 7.51 5585.44 Elevation of bottom of tailings (liner) (ft amsl)
0.539
rd Cσ Kσ Ka rd Dr f Kσ Ka Avg
(ft) (ft amsl) TSF TSF TSF (ft) PSI (%) (tcf) (pcf) (tsf)(tsf)(tsf) 1=Yes TSF MPa % (tsf)(tsf)(tsf) 1=Yes FoS m
0=No 0=No (ft/sec) (tcf) tsf tsf (%)
0.164 5607.28 10.8 0.029 10.8 8.7 3.75 0.27%Interim Cover 0.050 100.7 0.01 0.00 0.01 0 1.70 18.326 254.73 21.39 1310 0.27% 0.7 51% 0.87 0.00 0.87 0 1.00 0.05 1.00 1.0 0.058 37.83 59.22 0.087 1.51 0.96 0.27 0.80 2.53 1.0 0.017 1.00 21.39 0.068 166.66 84.08 2 4.98 594 1.6E-03 5.5E+02 1.5E-04 11 0.196 8357 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
0.328 5607.11 17.1 0.110 17.0 4.0 1.74 0.64%Interim Cover 0.050 100.7 0.02 0.00 0.02 0 1.70 28.968 402.66 33.69 1032 0.65% 1.1 51% 0.88 0.00 0.88 0 1.00 0.06 1.00 1.0 0.058 42.14 75.84 0.107 1.85 0.96 0.34 0.80 2.20 1.0 0.019 1.00 33.69 0.078 95.96 48.91 2 5.03 594 1.6E-03 5.5E+02 1.5E-04 11 0.196 8324 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
0.492 5606.95 38.1 0.119 38.1 2.8 1.21 0.31%Interim Cover 0.050 100.7 0.02 0.00 0.02 0 1.70 64.804 900.78 75.30 1538 0.31% 0.8 51% 0.88 0.00 0.88 0 1.00 0.09 1.00 1.0 0.058 56.75 132.05 0.208 3.61 0.96 0.50 0.75 2.43 1.0 0.017 1.00 75.30 0.120 98.14 50.88 2 5.08 594 1.6E-03 5.5E+02 1.6E-04 11 0.197 8291 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
0.656 5606.78 56.7 0.134 56.7 2.8 1.21 0.24%Interim Cover 0.050 100.7 0.03 0.00 0.03 0 1.70 96.339 1339.11 111.93 1714 0.24% 0.6 51% 0.89 0.00 0.89 0 1.00 0.12 1.00 1.0 0.058 69.60 181.53 0.561 9.75 0.96 0.61 0.69 2.71 1.0 0.016 1.00 111.93 0.210 129.42 69.59 2 5.13 594 1.6E-03 5.5E+02 1.6E-04 11 0.197 8260 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
0.820 5606.62 78.5 0.600 78.5 2.0 0.88 0.76%Interim Cover 0.050 100.7 0.04 0.00 0.04 0 1.70 133.399 1854.25 154.96 1899 0.76% 1.1 51% 0.90 0.00 0.90 0 1.00 0.17 0.99 1.0 0.057 84.70 239.66 1.000 17.43 0.96 0.72 0.64 2.98 1.0 0.014 1.00 154.96 0.426 209.74 113.58 2 5.18 594 1.6E-03 5.5E+02 1.6E-04 11 0.198 8228 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
0.984 5606.46 88.8 0.411 88.8 7.3 3.17 0.46%Interim Cover 0.050 100.7 0.05 0.00 0.05 0 1.70 150.909 2097.64 175.36 1791 0.46% 0.9 51% 0.91 0.00 0.91 0 1.00 0.20 0.99 1.0 0.057 91.86 267.22 1.000 17.49 0.96 0.76 0.62 2.98 1.0 0.014 1.00 175.36 1.000 410.39 213.94 2 5.23 594 1.6E-03 5.5E+02 1.6E-04 11 0.198 8197 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.148 5606.29 97.1 0.455 97.1 6.7 2.89 0.47%Interim Cover 0.050 100.7 0.06 0.00 0.06 0 1.70 165.002 2293.53 191.72 1678 0.47% 0.9 51% 0.92 0.00 0.92 0 1.00 0.24 0.98 1.0 0.057 97.60 289.32 1.000 17.57 0.96 0.80 0.60 2.94 1.0 0.014 1.00 191.72 1.000 351.91 184.74 2 5.28 594 1.6E-03 5.5E+02 1.6E-04 11 0.199 8166 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.312 5606.13 120.3 0.621 120.3 5.6 2.42 0.52%Interim Cover 0.050 100.7 0.07 0.00 0.07 0 1.70 204.459 2841.98 237.54 1819 0.52% 1.0 51% 0.93 0.00 0.93 0 1.00 0.30 0.98 1.0 0.057 113.68 351.21 1.000 17.69 0.96 0.89 0.60 2.79 1.0 0.015 1.00 237.54 1.000 308.04 162.86 2 5.33 594 1.6E-03 5.5E+02 1.6E-04 11 0.199 8136 0.02%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.476 5605.96 117.5 1.100 117.5 6.9 2.99 0.94%Interim Cover 0.050 100.7 0.07 0.00 0.07 0 1.70 199.682 2775.58 232.00 1579 0.94% 1.2 51% 0.93 0.00 0.93 0 1.00 0.30 0.98 1.0 0.056 111.74 343.74 1.000 17.73 0.96 0.88 0.60 2.66 1.0 0.016 1.00 232.00 1.000 273.92 145.83 2 5.38 594 1.6E-03 5.5E+02 1.7E-04 11 0.199 8106 0.02%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.640 5605.80 118.4 1.817 118.4 11.4 4.95 1.53%Interim Cover 0.050 100.7 0.08 0.00 0.08 0 1.70 201.212 2796.85 233.84 1433 1.54% 1.4 51% 0.94 0.00 0.94 0 1.00 0.30 0.97 1.0 0.056 112.38 346.22 1.000 17.78 0.96 0.88 0.60 2.55 1.0 0.017 1.00 233.84 1.000 246.63 132.21 2 5.43 594 1.6E-03 5.5E+02 1.7E-04 11 0.200 8076 0.02%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.804 5605.64 123.5 2.268 123.4 21.1 9.14 1.84%Interim Cover 0.050 100.7 0.09 0.00 0.09 0 1.70 209.780 2915.94 243.91 1358 1.84% 1.5 51% 0.95 0.00 0.95 0 1.00 0.30 0.97 1.0 0.056 115.92 359.82 1.000 17.83 0.96 0.90 0.60 2.46 1.0 0.017 1.00 243.91 1.000 224.30 121.06 2 5.48 594 1.6E-03 5.5E+02 1.7E-04 11 0.200 8047 0.02%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.968 5605.47 160.8 1.984 160.8 3.6 1.57 1.23%Interim Cover 0.050 100.7 0.10 0.00 0.10 0 1.70 273.394 3800.18 317.58 1621 1.23% 1.3 51% 0.96 0.00 0.96 0 1.00 0.30 0.97 1.0 0.056 141.77 459.34 1.000 17.89 0.96 1.03 0.60 2.37 1.0 0.018 1.00 317.58 1.000 205.69 111.79 2 5.53 594 1.6E-03 5.5E+02 1.7E-04 11 0.201 8018 0.03%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.133 5605.31 176.8 1.510 176.8 2.1 0.90 0.85%Interim Cover 0.050 100.7 0.11 0.00 0.11 0 1.70 300.577 4178.02 349.13 1645 0.85% 1.2 51% 0.97 0.00 0.97 0 1.00 0.30 0.97 1.0 0.056 152.84 501.97 1.000 17.96 0.96 1.08 0.60 2.30 1.0 0.018 1.00 349.13 1.000 189.94 103.95 2 5.58 594 1.6E-03 5.5E+02 1.7E-04 11 0.201 7990 0.03%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.297 5605.14 139.6 1.524 139.5 6.6 2.87 1.09%Interim Cover 0.050 100.7 0.12 0.00 0.12 0 1.70 236.977 3293.98 275.32 1206 1.09% 1.3 51% 0.98 0.00 0.98 0 1.00 0.30 0.96 1.0 0.055 126.94 402.25 1.000 18.02 0.96 0.96 0.60 2.23 1.0 0.019 1.00 275.32 1.000 176.45 97.23 2 5.63 594 1.6E-03 5.5E+02 1.7E-04 11 0.202 7962 0.03%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.461 5604.98 107.1 1.707 107.0 5.4 2.32 1.59%Interim Cover 0.050 100.7 0.12 0.00 0.12 0 1.70 181.951 2529.12 211.39 863 1.60% 1.5 51% 0.98 0.00 0.98 0 1.00 0.30 0.96 1.0 0.055 104.50 315.90 1.000 18.08 0.96 0.84 0.60 2.17 1.0 0.019 1.00 211.39 1.000 164.75 91.41 2 5.68 594 1.6E-03 5.5E+02 1.7E-04 11 0.202 7934 0.03% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.625 5604.82 84.4 1.333 84.4 6.6 2.87 1.58%Interim Cover 0.050 100.7 0.13 0.00 0.13 0 1.70 143.480 1994.37 166.72 638 1.58% 1.6 51% 0.99 0.00 0.99 0 1.00 0.19 0.97 1.0 0.056 88.83 255.55 1.000 17.84 0.96 0.75 0.63 2.01 1.0 0.021 1.00 166.72 1.000 154.51 86.18 2 5.73 594 1.6E-03 5.5E+02 1.8E-04 11 0.203 7906 0.03%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.789 5604.65 89.6 1.432 89.6 -4.7 -2.02 1.60%Interim Cover 0.050 100.7 0.14 0.00 0.14 0 1.70 152.388 2118.19 176.93 637 1.60% 1.6 51% 1.00 0.00 1.00 0 0.99 0.21 0.97 1.0 0.056 92.41 269.34 1.000 17.94 0.96 0.77 0.62 2.01 1.0 0.021 1.00 176.93 1.000 145.48 81.71 2 5.78 594 1.6E-03 5.5E+02 1.8E-04 11 0.203 7879 0.03%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.953 5604.49 77.3 1.421 77.3 -4.6 -2.00 1.84%Interim Cover 0.050 100.7 0.15 0.00 0.15 0 1.70 131.376 1826.13 152.53 518 1.84% 1.7 51% 1.01 0.00 1.01 0 0.99 0.16 0.97 1.0 0.056 83.85 236.38 1.000 17.87 0.96 0.71 0.64 1.87 1.0 0.023 1.01 154.81 0.425 58.42 38.14 2 5.83 594 1.6E-03 5.5E+02 1.8E-04 11 0.203 7852 0.03%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
3.117 5604.32 57.2 1.269 57.2 -3.2 -1.37 2.22%Interim Cover 0.050 100.7 0.16 0.00 0.16 0 1.70 97.240 1351.64 112.90 363 2.23% 1.8 51% 1.02 0.00 1.02 0 0.99 0.12 0.98 1.0 0.056 69.94 182.84 0.585 10.40 0.96 0.61 0.69 1.69 1.0 0.025 1.12 125.96 0.266 34.64 22.52 2 5.88 495 1.6E-03 3.8E+02 2.6E-04 11 0.204 7826 0.05% 2.00 0.65 0.03% 0.009 0.34 0.079 0.765 1.38% 0.0023
3.281 5604.16 57.1 1.231 57.1 -3.1 -1.33 2.16%Sand-Slime Tailing 0.059 119.0 0.17 0.00 0.17 1 1.70 97.019 1348.56 112.64 344 2.16% 1.8 47% 1.03 0.00 1.03 0 0.99 0.12 0.98 1.0 0.056 69.81 182.45 0.578 10.29 0.95 0.61 0.69 1.66 1.0 0.025 1.12 125.82 0.265 32.80 21.54 2 5.93 495 1.8E-03 4.5E+02 2.2E-04 10 0.205 8004 0.04% 2.00 0.65 0.03% 0.005 0.34 0.079 0.765 0.79% 0.0013
3.445 5604.00 105.1 0.904 105.1 -2.7 -1.16 0.86%Sand Tailings 0.062 123.5 0.18 0.01 0.17 1 1.68 177.110 2461.83 205.67 616 0.86% 1.3 18% 1.04 0.00 1.04 0 0.99 0.28 0.95 1.0 0.054 74.67 280.34 1.000 18.41 0.95 0.83 0.60 1.91 1.0 0.022 1.00 205.67 1.000 120.06 69.23 2 5.98 495 1.9E-03 4.7E+02 2.2E-04 0 0.208 10054 0.05%2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.07% 0.0001
3.609 5603.83 60.4 0.451 60.5 -1.3 -0.55 0.75%Sand Tailings 0.062 123.5 0.19 0.01 0.18 1 1.70 102.765 1428.43 119.34 343 0.75% 1.4 18% 1.05 0.00 1.05 0 0.99 0.12 0.98 1.0 0.056 52.60 171.94 0.428 7.66 0.95 0.63 0.68 1.65 1.0 0.025 1.00 119.34 0.238 27.78 17.72 2 6.03 495 1.9E-03 4.7E+02 2.2E-04 0 0.208 10014 0.05% 2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.07% 0.0001
3.773 5603.67 36.8 0.568 36.8 -6.9 -2.99 1.55%Sand-Slime Tailing 0.059 119.0 0.20 0.02 0.18 1 1.70 62.560 869.58 72.57 203 1.55% 1.8 47% 1.06 0.00 1.06 0 0.99 0.09 0.98 1.0 0.056 55.75 128.33 0.199 3.54 0.95 0.49 0.75 1.47 1.0 0.029 1.13 81.86 0.131 14.90 9.22 2 6.08 495 1.8E-03 4.5E+02 2.3E-04 10 0.206 7909 0.04% 2.00 0.65 0.03% 0.006 0.34 0.079 0.765 0.88% 0.0015
3.937 5603.50 18.3 0.393 18.4 -6.8 -2.95 2.14%Sand-Slime Tailing 0.059 119.0 0.21 0.02 0.18 1 1.70 31.246 434.32 36.21 98 2.17% 2.1 47% 1.07 0.00 1.07 0 0.99 0.06 0.99 1.0 0.056 43.00 79.21 0.112 1.98 0.95 0.35 0.80 1.36 1.0 0.031 1.54 55.93 0.096 10.68 6.33 2 6.13 495 1.8E-03 4.5E+02 2.3E-04 10 0.207 7879 0.04% 2.00 0.65 0.03% 0.006 0.34 0.079 0.765 0.91% 0.0015
4.101 5603.34 6.8 0.370 6.8 -1.7 -0.72 5.47%Slime Tailings 0.057 113.1 0.22 0.03 0.19 1 1.70 11.526 160.21 13.37 35 5.65% 2.8 71% 1.08 0.00 1.08 0 0.99 0.05 0.99 1.0 0.056 34.74 48.11 0.076 1.34 0.95 0.21 0.80 1.35 1.0 0.031 4.45 59.42 0.100 10.80 6.07 2 6.18 495 1.8E-03 4.3E+02 2.4E-04 16 0.459 6462 0.05% 2.00 0.65 0.03% 0.009 0.34 0.079 0.765 1.35% 0.0022
4.265 5603.17 7.9 0.213 7.9 1.0 0.42 2.68%Slime Tailings 0.057 113.1 0.23 0.03 0.19 1 1.70 13.481 187.39 15.67 40 2.76% 2.5 71% 1.09 0.00 1.09 0 0.99 0.05 0.99 1.0 0.056 35.54 51.21 0.079 1.40 0.95 0.23 0.80 1.35 1.0 0.031 2.77 43.40 0.086 9.15 5.27 2 6.23 495 1.8E-03 4.3E+02 2.5E-04 16 0.459 6440 0.05% 2.00 0.65 0.03% 0.009 0.34 0.079 0.765 1.38% 0.0023
4.429 5603.01 9.1 0.198 9.1 0.7 0.29 2.18%Slime Tailings 0.057 113.1 0.23 0.04 0.20 1 1.70 15.436 214.56 17.94 45 2.24% 2.4 71% 1.09 0.00 1.09 0 0.99 0.05 0.99 1.0 0.056 36.33 54.27 0.082 1.45 0.95 0.24 0.80 1.34 1.0 0.031 2.32 41.62 0.085 8.81 5.13 2 6.28 495 1.8E-03 4.3E+02 2.5E-04 16 0.460 6417 0.06% 2.00 0.65 0.03% 0.009 0.34 0.079 0.765 1.40% 0.0023
4.593 5602.85 7.9 0.200 7.9 1.4 0.59 2.54%Slime Tailings 0.057 113.1 0.24 0.04 0.20 1 1.70 13.362 185.73 15.54 38 2.62% 2.5 71% 1.10 0.00 1.10 0 0.98 0.05 0.99 1.0 0.056 35.50 51.03 0.078 1.40 0.95 0.23 0.80 1.34 1.0 0.031 2.78 43.24 0.086 8.77 5.08 2 6.33 495 1.8E-03 4.3E+02 2.5E-04 16 0.460 6395 0.06% 2.00 0.65 0.03% 0.009 0.34 0.079 0.765 1.43% 0.0024
4.757 5602.68 14.7 0.112 14.6 6.6 2.87 0.76%Sand-Slime Tailing 0.059 119.0 0.25 0.05 0.21 1 1.70 24.837 345.23 28.93 70 0.78% 2.0 47% 1.11 0.00 1.11 0 0.98 0.06 0.99 1.0 0.056 40.45 69.38 0.099 1.76 0.95 0.31 0.80 1.33 1.0 0.032 1.26 36.49 0.080 8.01 4.89 2 6.38 495 1.8E-03 4.5E+02 2.4E-04 10 0.209 7739 0.05% 2.00 0.65 0.03% 0.007 0.34 0.079 0.765 1.06% 0.0017
4.921 5602.52 29.5 0.077 29.5 0.6 0.26 0.26%Sand-Slime Tailing 0.059 119.0 0.26 0.05 0.21 1 1.70 50.201 697.79 58.31 139 0.26% 1.5 47% 1.12 0.00 1.12 0 0.98 0.08 0.98 1.0 0.056 50.75 109.07 0.158 2.84 0.95 0.44 0.78 1.36 1.0 0.031 1.00 58.31 0.098 9.60 6.22 2 6.43 495 1.8E-03 4.5E+02 2.4E-04 10 0.209 7711 0.05% 2.00 0.65 0.03% 0.007 0.34 0.079 0.765 1.09% 0.0018
5.085 5602.35 24.5 0.105 24.5 -1.1 -0.49 0.43%Sand-Slime Tailing 0.059 119.0 0.27 0.06 0.22 1 1.70 41.633 578.70 48.34 112 0.43% 1.7 47% 1.13 0.00 1.13 0 0.98 0.07 0.98 1.0 0.056 47.26 95.60 0.135 2.43 0.95 0.40 0.80 1.32 1.0 0.032 1.01 48.77 0.091 8.65 5.54 2 6.48 495 1.8E-03 4.5E+02 2.4E-04 10 0.210 7684 0.05% 2.00 0.65 0.03% 0.007 0.34 0.079 0.765 1.12% 0.0018
5.249 5602.19 21.8 0.186 21.8 2.1 0.91 0.85%Sand-Slime Tailing 0.059 119.0 0.28 0.06 0.22 1 1.70 37.094 515.61 43.11 98 0.86% 1.9 47% 1.14 0.00 1.14 0 0.98 0.07 0.98 1.0 0.056 45.42 88.53 0.125 2.24 0.95 0.38 0.80 1.31 1.0 0.032 1.17 50.35 0.092 8.59 5.41 2 6.53 495 1.8E-03 4.5E+02 2.5E-04 10 0.210 7657 0.05% 2.00 0.65 0.03% 0.007 0.34 0.079 0.765 1.15% 0.0019
5.413 5602.03 13.2 0.258 13.2 3.3 1.43 1.95%Sand-Slime Tailing 0.059 119.0 0.29 0.07 0.22 1 1.70 22.474 312.39 26.14 58 1.99% 2.3 47% 1.15 0.00 1.15 0 0.98 0.06 0.98 1.0 0.056 39.47 65.61 0.094 1.69 0.95 0.30 0.80 1.31 1.0 0.032 1.91 49.87 0.092 8.38 5.04 2 6.58 495 1.8E-03 4.5E+02 2.5E-04 10 0.211 7630 0.05% 2.00 0.65 0.03% 0.008 0.34 0.079 0.765 1.17% 0.0019
5.577 5601.86 10.1 0.292 10.0 11.1 4.81 2.89%Slime Tailings 0.057 113.1 0.30 0.07 0.23 1 1.70 17.068 237.25 19.96 43 2.98% 2.5 71% 1.16 0.00 1.16 0 0.98 0.05 0.98 1.0 0.056 37.04 57.00 0.085 1.52 0.95 0.26 0.80 1.30 1.0 0.032 2.76 55.19 0.096 8.60 5.06 2 6.63 495 1.8E-03 4.3E+02 2.6E-04 16 0.463 6261 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.61% 0.0026
5.741 5601.70 8.4 0.248 8.3 11.7 5.07 2.95%Slime Tailings 0.057 113.1 0.31 0.08 0.23 1 1.70 14.144 196.60 16.57 35 3.07% 2.6 71% 1.17 0.00 1.17 0 0.98 0.05 0.98 1.0 0.056 35.86 52.43 0.080 1.43 0.95 0.24 0.80 1.30 1.0 0.032 3.18 52.77 0.094 8.28 4.86 2 6.68 495 1.8E-03 4.3E+02 2.7E-04 16 0.463 6241 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.64% 0.0027
5.905 5601.53 7.3 0.202 7.2 12.6 5.46 2.76%Slime Tailings 0.057 113.1 0.32 0.08 0.24 1 1.70 12.308 171.08 14.45 30 2.89% 2.6 71% 1.18 0.00 1.18 0 0.98 0.05 0.98 1.0 0.056 35.12 49.57 0.077 1.39 0.95 0.22 0.80 1.29 1.0 0.032 3.40 49.16 0.091 7.90 4.64 2 6.73 495 1.8E-03 4.3E+02 2.7E-04 16 0.464 6220 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.67% 0.0027
6.069 5601.37 11.4 0.159 11.3 23.0 9.95 1.40%Sand-Slime Tailing 0.059 119.0 0.33 0.09 0.24 1 1.70 19.125 265.84 22.50 46 1.44% 2.3 47% 1.19 0.00 1.19 0 0.98 0.05 0.98 1.0 0.055 38.19 60.69 0.089 1.60 0.95 0.27 0.80 1.29 1.0 0.032 1.87 42.03 0.085 7.24 4.42 2 6.78 495 1.8E-03 4.5E+02 2.6E-04 10 0.212 7529 0.05% 2.00 0.65 0.03% 0.008 0.34 0.079 0.765 1.29% 0.0021
6.234 5601.21 13.4 0.202 13.4 8.1 3.51 1.51%Sand-Slime Tailing 0.059 119.0 0.34 0.09 0.25 1 1.70 22.712 315.70 26.48 53 1.55% 2.2 47% 1.20 0.00 1.20 0 0.98 0.06 0.98 1.0 0.055 39.59 66.07 0.095 1.71 0.95 0.30 0.80 1.28 1.0 0.033 1.78 47.10 0.089 7.46 4.59 2 6.83 495 1.8E-03 4.5E+02 2.6E-04 10 0.213 7503 0.05% 2.00 0.65 0.03% 0.009 0.34 0.079 0.765 1.31% 0.0022
6.398 5601.04 17.4 0.135 17.4 8.8 3.83 0.77%Sand-Slime Tailing 0.059 119.0 0.35 0.10 0.25 1 1.70 29.529 410.45 34.41 68 0.79% 2.0 47% 1.21 0.00 1.21 0 0.97 0.06 0.98 1.0 0.055 42.37 76.77 0.108 1.96 0.95 0.34 0.80 1.28 1.0 0.033 1.28 43.97 0.087 7.11 4.54 2 6.88 495 1.8E-03 4.5E+02 2.6E-04 10 0.213 7478 0.05% 2.00 0.65 0.03% 0.009 0.34 0.079 0.765 1.34% 0.0022
6.562 5600.88 33.6 0.152 33.5 8.1 3.50 0.45%Sand Tailings 0.062 123.5 0.36 0.10 0.26 1 1.70 56.967 791.84 66.26 130 0.46% 1.6 18% 1.22 0.00 1.22 0 0.97 0.08 0.97 1.0 0.055 39.03 105.29 0.151 2.77 0.95 0.47 0.77 1.33 1.0 0.031 1.00 66.26 0.107 8.62 5.70 2 6.93 495 1.9E-03 4.7E+02 2.5E-04 0 0.216 9406 0.07% 2.20 1.00 0.03% 0.001 0.34 0.079 0.765 0.13% 0.0002
6.726 5600.71 25.5 0.167 25.5 1.3 0.57 0.65%Sand-Slime Tailing 0.059 119.0 0.37 0.11 0.26 1 1.70 43.418 603.51 50.44 97 0.66% 1.8 47% 1.23 0.00 1.23 0 0.97 0.07 0.97 1.0 0.055 47.99 98.44 0.140 2.56 0.95 0.41 0.79 1.28 1.0 0.033 1.12 56.34 0.097 7.65 5.10 2 6.98 495 1.8E-03 4.5E+02 2.6E-04 10 0.214 7428 0.06% 2.00 0.65 0.03% 0.009 0.34 0.079 0.765 1.40% 0.0023
6.890 5600.55 13.1 0.130 13.1 2.1 0.90 0.99%Sand-Slime Tailing 0.059 119.0 0.38 0.11 0.27 1 1.70 22.287 309.79 25.91 48 1.02% 2.2 47% 1.24 0.00 1.24 0 0.97 0.06 0.98 1.0 0.055 39.39 65.30 0.094 1.71 0.95 0.29 0.80 1.27 1.0 0.033 1.60 41.35 0.084 6.57 4.14 2 7.03 495 1.8E-03 4.5E+02 2.7E-04 10 0.215 7403 0.06% 2.00 0.65 0.03% 0.009 0.34 0.079 0.765 1.43% 0.0023
7.054 5600.39 6.0 0.125 5.9 15.6 6.76 2.08%Slime Tailings 0.057 113.1 0.39 0.12 0.27 1 1.70 10.047 139.65 11.86 21 2.22% 2.7 71% 1.25 0.00 1.25 0 0.97 0.05 0.98 1.0 0.055 34.22 46.08 0.074 1.34 0.95 0.20 0.80 1.26 1.0 0.033 3.72 44.16 0.087 6.65 3.99 2 7.08 495 1.8E-03 4.3E+02 2.8E-04 16 0.466 6078 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.88% 0.0031
7.218 5600.22 6.6 0.062 6.4 28.5 12.36 0.94%Slime Tailings 0.057 113.1 0.40 0.12 0.27 1 1.70 10.914 151.70 13.03 23 1.00% 2.4 71% 1.26 0.00 1.26 0 0.97 0.05 0.98 1.0 0.055 34.62 47.65 0.075 1.37 0.95 0.21 0.80 1.26 1.0 0.033 2.49 32.43 0.077 5.81 3.59 2 7.13 495 1.8E-03 4.3E+02 2.8E-04 16 0.467 6060 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.90% 0.0031
7.382 5600.06 19.6 0.120 19.5 19.3 8.36 0.61%Sand-Slime Tailing 0.059 119.0 0.41 0.13 0.28 1 1.70 33.133 460.55 38.72 69 0.62% 1.9 47% 1.27 0.00 1.27 0 0.97 0.06 0.98 1.0 0.055 43.88 82.60 0.116 2.13 0.95 0.36 0.80 1.25 1.0 0.033 1.21 46.84 0.089 6.61 4.37 2 7.18 495 1.8E-03 4.5E+02 2.7E-04 10 0.216 7334 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.51% 0.0025
7.546 5599.89 11.8 0.165 11.8 7.7 3.32 1.40%Sand-Slime Tailing 0.059 119.0 0.42 0.13 0.28 1 1.70 20.009 278.13 23.33 40 1.45% 2.3 47% 1.28 0.00 1.28 0 0.97 0.05 0.98 1.0 0.055 38.48 61.82 0.090 1.64 0.94 0.28 0.80 1.25 1.0 0.033 2.02 47.02 0.089 6.52 4.08 2 7.23 495 1.8E-03 4.5E+02 2.8E-04 10 0.216 7311 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.54% 0.0025
7.710 5599.73 11.2 0.230 11.1 15.6 6.75 2.06%Slime Tailings 0.057 113.1 0.43 0.14 0.29 1 1.70 18.819 261.58 22.05 37 2.14% 2.5 71% 1.29 0.00 1.29 0 0.97 0.05 0.98 1.0 0.055 37.77 59.82 0.088 1.60 0.94 0.27 0.80 1.25 1.0 0.033 2.53 55.75 0.096 6.92 4.26 2 7.28 495 1.8E-03 4.3E+02 2.9E-04 16 0.468 6004 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 1.99% 0.0033
7.874 5599.57 9.4 0.185 9.3 9.2 4.00 1.98%Slime Tailings 0.057 113.1 0.44 0.14 0.29 1 1.70 15.810 219.76 18.48 31 2.07% 2.5 71% 1.30 0.00 1.30 0 0.96 0.05 0.98 1.0 0.055 36.52 55.00 0.082 1.51 0.94 0.25 0.80 1.24 1.0 0.034 2.82 52.03 0.093 6.61 4.06 2 7.33 495 1.8E-03 4.3E+02 2.9E-04 16 0.468 5986 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 2.02% 0.0033
8.038 5599.40 7.2 0.119 7.1 13.2 5.73 1.66%Slime Tailings 0.057 113.1 0.45 0.15 0.30 1 1.70 12.019 167.06 14.12 23 1.77% 2.6 71% 1.31 0.00 1.31 0 0.96 0.05 0.98 1.0 0.055 35.01 49.13 0.077 1.40 0.94 0.22 0.80 1.24 1.0 0.034 3.17 44.79 0.087 6.12 3.76 2 7.38 495 1.8E-03 4.3E+02 3.0E-04 16 0.469 5968 0.08% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 2.05% 0.0034
8.202 5599.24 6.0 0.067 5.9 26.0 11.28 1.11%Slime Tailings 0.057 113.1 0.45 0.15 0.30 1 1.70 9.962 138.47 11.89 19 1.20% 2.6 71% 1.31 0.00 1.31 0 0.96 0.05 0.98 1.0 0.055 34.23 46.12 0.074 1.35 0.94 0.20 0.80 1.24 1.0 0.034 3.07 36.49 0.080 5.56 3.46 2 7.43 495 1.8E-03 4.3E+02 3.0E-04 16 0.469 5951 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.08% 0.0034
8.366 5599.07 6.1 0.081 5.9 31.3 13.56 1.34%Slime Tailings 0.057 113.1 0.46 0.16 0.30 1 1.70 9.962 138.47 11.96 18 1.45% 2.6 71% 1.32 0.00 1.32 0 0.96 0.05 0.98 1.0 0.054 34.25 46.21 0.074 1.36 0.94 0.20 0.80 1.23 1.0 0.034 3.34 39.89 0.083 5.68 3.52 2 7.48 495 1.8E-03 4.3E+02 3.0E-04 16 0.470 5934 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.11% 0.0035
8.530 5598.91 13.2 0.065 12.9 48.6 21.04 0.49%Sand-Slime Tailing 0.059 119.0 0.47 0.17 0.31 1 1.70 21.981 305.54 26.13 41 0.51% 2.1 47% 1.33 0.00 1.33 0 0.96 0.06 0.98 1.0 0.054 39.47 65.59 0.094 1.74 0.94 0.30 0.80 1.23 1.0 0.034 1.41 36.75 0.081 5.42 3.58 2 7.53 495 1.8E-03 4.5E+02 2.9E-04 10 0.219 7182 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.71% 0.0028
8.694 5598.75 13.3 0.116 13.3 8.9 3.84 0.87%Sand-Slime Tailing 0.059 119.0 0.48 0.17 0.31 1 1.70 22.525 313.10 26.27 41 0.90% 2.2 47% 1.34 0.00 1.34 0 0.96 0.06 0.97 1.0 0.054 39.52 65.79 0.094 1.75 0.94 0.30 0.80 1.22 1.0 0.034 1.66 43.71 0.086 5.72 3.74 2 7.58 495 1.8E-03 4.5E+02 2.9E-04 10 0.219 7160 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.73% 0.0028
8.858 5598.58 6.7 0.132 6.6 9.6 4.14 1.98%Slime Tailings 0.057 113.1 0.49 0.18 0.32 1 1.70 11.254 156.43 13.19 20 2.13% 2.7 71% 1.35 0.00 1.35 0 0.96 0.05 0.98 1.0 0.054 34.68 47.87 0.075 1.39 0.94 0.21 0.80 1.22 1.0 0.034 3.81 50.27 0.092 6.00 3.70 2 7.63 495 1.8E-03 4.3E+02 3.1E-04 16 0.471 5881 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.19% 0.0036
9.022 5598.42 3.7 0.117 3.6 7.2 3.11 3.20%Slime Tailings 0.057 113.1 0.50 0.18 0.32 1 1.70 6.137 85.30 7.22 10 3.71% 3.1 71% 1.36 0.00 1.36 0 0.96 0.04 0.98 1.0 0.054 32.60 39.82 0.068 1.26 0.94 0.16 0.80 1.22 1.0 0.034 7.40 53.38 0.094 6.08 3.67 2 7.68 495 1.8E-03 4.3E+02 3.1E-04 16 0.471 5865 0.08% 2.00 0.65 0.03%0.015 0.34 0.079 0.765 2.22% 0.0036
9.186 5598.25 2.3 0.054 2.2 18.5 8.01 2.32%Slime Tailings 0.057 113.1 0.51 0.19 0.33 1 1.70 3.757 52.22 4.59 6 2.98% 3.2 71% 1.37 0.00 1.37 0 0.96 0.04 0.98 1.0 0.054 31.69 36.28 0.066 1.21 0.94 0.12 0.80 1.21 1.0 0.034 9.35 42.94 0.086 5.47 3.34 2 7.73 495 1.8E-03 4.3E+02 3.1E-04 16 0.471 5849 0.08% 2.00 0.65 0.03%0.015 0.34 0.079 0.765 2.25% 0.0037
9.350 5598.09 2.4 0.024 2.2 24.5 10.62 1.02%Slime Tailings 0.057 113.1 0.52 0.19 0.33 1 1.70 3.757 52.22 4.67 6 1.30% 3.0 71% 1.38 0.00 1.38 0 0.96 0.04 0.98 1.0 0.054 31.71 36.38 0.066 1.21 0.94 0.12 0.80 1.21 1.0 0.034 7.11 33.17 0.078 4.89 3.05 2 7.78 460 1.8E-03 3.7E+02 3.6E-04 16 0.472 5832 0.12% 2.00 0.65 0.03%0.021 0.34 0.079 0.765 3.22% 0.0053
9.514 5597.93 2.6 0.011 2.4 34.3 14.85 0.42%Slime Tailings 0.057 113.1 0.53 0.20 0.33 1 1.70 4.080 56.71 5.16 6 0.53% 2.8 71% 1.39 0.00 1.39 0 0.95 0.04 0.98 1.0 0.054 31.88 37.05 0.066 1.23 0.94 0.13 0.80 1.21 1.0 0.034 5.10 26.30 0.072 4.48 2.85 2 7.83 460 1.8E-03 3.7E+02 3.6E-04 16 0.472 5816 0.12% 2.00 0.65 0.03%0.021 0.34 0.079 0.765 3.25% 0.0053
9.678 5597.76 2.8 0.016 2.6 37.8 16.39 0.57%Slime Tailings 0.057 113.1 0.54 0.20 0.34 1 1.70 4.403 61.20 5.58 7 0.70% 2.8 71% 1.40 0.00 1.40 0 0.95 0.04 0.98 1.0 0.054 32.03 37.61 0.067 1.24 0.94 0.14 0.80 1.21 1.0 0.034 5.19 28.96 0.074 4.56 2.90 2 7.88 460 1.8E-03 3.7E+02 3.7E-04 16 0.473 5800 0.12% 2.00 0.65 0.03%0.022 0.34 0.079 0.765 3.29% 0.0054
9.842 5597.60 3.2 0.010 2.9 39.6 17.14 0.32%Slime Tailings 0.057 113.1 0.55 0.21 0.34 1 1.70 4.947 68.76 6.23 8 0.38% 2.7 71% 1.41 0.00 1.41 0 0.95 0.04 0.98 1.0 0.054 32.26 38.49 0.067 1.25 0.94 0.14 0.80 1.20 1.0 0.034 4.07 25.35 0.071 4.32 2.79 2 7.93 460 1.8E-03 3.7E+02 3.7E-04 16 0.473 5785 0.13% 2.00 0.65 0.03%0.022 0.34 0.079 0.765 3.33% 0.0055
10.006 5597.43 4.5 0.016 4.3 44.0 19.08 0.35%Slime Tailings 0.057 113.1 0.56 0.21 0.35 1 1.70 7.225 100.43 8.93 11 0.40% 2.5 71% 1.42 0.00 1.42 0 0.95 0.04 0.98 1.0 0.054 33.20 42.13 0.070 1.31 0.94 0.17 0.80 1.20 1.0 0.035 3.02 27.02 0.073 4.36 2.83 2 7.98 460 1.8E-03 3.7E+02 3.7E-04 16 0.473 5769 0.13% 2.00 0.65 0.03% 0.022 0.34 0.079 0.765 3.37% 0.0055
10.170 5597.27 22.4 0.010 22.4 7.4 3.19 0.04%Sand-Slime Tailing 0.059 119.0 0.57 0.22 0.35 1 1.70 37.995 528.13 44.22 62 0.05% 1.7 47% 1.43 0.00 1.43 0 0.95 0.07 0.97 1.0 0.053 45.81 90.03 0.127 2.39 0.94 0.38 0.80 1.20 1.0 0.035 1.02 45.30 0.088 5.20 3.80 2 8.03 460 1.8E-03 3.9E+02 3.6E-04 10 0.222 6982 0.11% 2.00 0.65 0.03% 0.019 0.34 0.079 0.765 2.89% 0.0047
10.335 5597.11 9.5 0.106 9.4 6.7 2.89 1.12%Sand-Slime Tailing 0.059 119.0 0.58 0.22 0.36 1 1.70 15.997 222.36 18.66 25 1.19% 2.4 47% 1.44 0.00 1.44 0 0.95 0.05 0.97 1.0 0.053 36.85 55.51 0.083 1.55 0.94 0.25 0.80 1.19 1.0 0.035 2.51 46.77 0.089 5.21 3.38 2 8.08 460 1.8E-03 3.9E+02 3.6E-04 10 0.223 6963 0.11% 2.00 0.65 0.03% 0.019 0.34 0.079 0.765 2.93% 0.0048
10.499 5596.94 7.7 0.177 7.6 9.0 3.88 2.30%Slime Tailings 0.057 113.1 0.59 0.23 0.36 1 1.70 12.971 180.30 15.18 20 2.49% 2.7 71% 1.45 0.00 1.45 0 0.95 0.05 0.97 1.0 0.053 35.37 50.55 0.078 1.46 0.94 0.22 0.80 1.19 1.0 0.035 4.07 61.73 0.102 5.90 3.68 2 8.13 460 1.8E-03 3.7E+02 3.8E-04 16 0.474 5722 0.13% 2.00 0.65 0.03% 0.023 0.34 0.079 0.765 3.49% 0.0057
10.663 5596.78 6.4 0.128 6.3 17.8 7.70 2.00%Slime Tailings 0.057 113.1 0.60 0.23 0.36 1 1.70 10.693 148.63 12.64 16 2.20% 2.8 71% 1.46 0.00 1.46 0 0.95 0.05 0.98 1.0 0.053 34.49 47.13 0.075 1.40 0.94 0.21 0.80 1.19 1.0 0.035 4.41 55.68 0.096 5.50 3.45 2 8.18 460 1.8E-03 3.7E+02 3.8E-04 16 0.475 5707 0.13% 2.00 0.65 0.03% 0.023 0.34 0.079 0.765 3.53% 0.0058
10.827 5596.61 4.4 0.090 4.2 34.3 14.84 2.04%Slime Tailings 0.057 113.1 0.60 0.24 0.37 1 1.70 7.123 99.01 8.70 10 2.37% 2.9 71% 1.46 0.00 1.46 0 0.95 0.04 0.98 1.0 0.053 33.12 41.81 0.070 1.31 0.94 0.17 0.80 1.19 1.0 0.035 5.98 52.01 0.093 5.27 3.29 2 8.23 460 1.8E-03 3.7E+02 3.8E-04 16 0.475 5692 0.14% 2.00 0.65 0.03%0.023 0.34 0.079 0.765 3.57% 0.0059
10.991 5596.45 5.0 0.031 4.7 52.3 22.65 0.62%Slime Tailings 0.057 113.1 0.61 0.24 0.37 1 1.70 7.990 111.06 9.92 12 0.70% 2.6 71% 1.47 0.00 1.47 0 0.94 0.05 0.98 1.0 0.053 33.54 43.47 0.072 1.34 0.94 0.18 0.80 1.18 1.0 0.035 3.47 34.43 0.079 4.41 2.88 2 8.28 460 1.8E-03 3.7E+02 3.9E-04 16 0.475 5677 0.14% 2.00 0.65 0.03% 0.024 0.34 0.079 0.765 3.61% 0.0059
11.155 5596.29 3.9 0.027 3.6 49.3 21.35 0.70%Slime Tailings 0.057 113.1 0.62 0.25 0.38 1 1.70 6.052 84.12 7.64 9 0.83% 2.8 71% 1.48 0.00 1.48 0 0.94 0.04 0.98 1.0 0.053 32.75 40.38 0.069 1.29 0.94 0.16 0.80 1.18 1.0 0.035 4.61 35.20 0.079 4.40 2.85 2 8.33 460 1.8E-03 3.7E+02 3.9E-04 16 0.476 5662 0.14% 2.00 0.65 0.03%0.024 0.34 0.079 0.765 3.65% 0.0060
11.319 5596.12 3.6 0.014 3.2 58.6 25.37 0.39%Slime Tailings 0.057 113.1 0.63 0.25 0.38 1 1.70 5.508 76.56 7.12 8 0.47% 2.7 71% 1.49 0.00 1.49 0 0.94 0.04 0.98 1.0 0.053 32.57 39.69 0.068 1.29 0.94 0.15 0.80 1.18 1.0 0.035 4.20 29.90 0.075 4.11 2.70 2 8.38 460 1.8E-03 3.7E+02 3.9E-04 16 0.476 5648 0.14% 2.00 0.65 0.03%0.024 0.34 0.079 0.765 3.69% 0.0061
11.483 5595.96 3.7 0.010 3.3 65.7 28.48 0.27%Slime Tailings 0.057 113.1 0.64 0.26 0.38 1 1.70 5.610 77.98 7.33 8 0.33% 2.7 71% 1.50 0.00 1.50 0 0.94 0.04 0.98 1.0 0.053 32.64 39.96 0.069 1.29 0.94 0.16 0.80 1.17 1.0 0.035 3.79 27.75 0.073 3.97 2.63 2 8.43 460 1.8E-03 3.7E+02 3.9E-04 16 0.476 5633 0.14% 2.00 0.65 0.03%0.024 0.34 0.079 0.765 3.73% 0.0061
11.647 5595.79 3.5 0.010 3.1 63.3 27.45 0.29%Slime Tailings 0.057 113.1 0.65 0.26 0.39 1 1.70 5.270 73.25 6.90 7 0.35% 2.7 71% 1.51 0.00 1.51 0 0.94 0.04 0.98 1.0 0.053 32.49 39.39 0.068 1.28 0.94 0.15 0.80 1.17 1.0 0.035 4.11 28.39 0.074 3.96 2.62 2 8.48 460 1.8E-03 3.7E+02 4.0E-04 16 0.477 5619 0.15% 2.00 0.65 0.03%0.025 0.34 0.079 0.765 3.77% 0.0062
11.811 5595.63 3.3 0.010 2.9 65.8 28.52 0.31%Slime Tailings 0.057 113.1 0.66 0.27 0.39 1 1.70 4.862 67.58 6.46 7 0.38% 2.8 71% 1.52 0.00 1.52 0 0.94 0.04 0.98 1.0 0.053 32.34 38.79 0.068 1.28 0.93 0.15 0.80 1.17 1.0 0.035 4.51 29.12 0.074 3.95 2.61 2 8.53 460 1.8E-03 3.7E+02 4.0E-04 16 0.477 5605 0.15% 2.00 0.65 0.03%0.025 0.34 0.079 0.765 3.81% 0.0063
11.975 5595.47 3.0 0.010 2.6 62.5 27.10 0.33%Slime Tailings 0.057 113.1 0.67 0.27 0.40 1 1.70 4.420 61.44 5.90 6 0.43% 2.8 71% 1.53 0.00 1.53 0 0.94 0.04 0.98 1.0 0.053 32.14 38.05 0.067 1.27 0.93 0.14 0.80 1.17 1.0 0.035 5.09 30.06 0.075 3.95 2.61 2 8.58 460 1.8E-03 3.7E+02 4.0E-04 16 0.478 5591 0.15% 2.00 0.65 0.03%0.025 0.34 0.079 0.765 3.85% 0.0063
12.139 5595.30 3.0 0.010 2.6 63.4 27.46 0.33%Slime Tailings 0.057 113.1 0.68 0.28 0.40 1 1.70 4.420 61.44 5.91 6 0.43% 2.8 71% 1.54 0.00 1.54 0 0.94 0.04 0.98 1.0 0.053 32.15 38.06 0.067 1.27 0.93 0.14 0.80 1.16 1.0 0.035 5.14 30.39 0.075 3.92 2.60 2 8.63 460 1.8E-03 3.7E+02 4.0E-04 16 0.478 5577 0.15% 2.00 0.65 0.03%0.025 0.34 0.079 0.765 3.89% 0.0064
12.303 5595.14 3.8 0.019 3.3 76.0 32.92 0.50%Slime Tailings 0.057 113.1 0.69 0.28 0.41 1 1.70 5.610 77.98 7.45 8 0.62% 2.8 71% 1.55 0.00 1.55 0 0.94 0.04 0.97 1.0 0.053 32.68 40.13 0.069 1.30 0.93 0.16 0.80 1.16 1.0 0.035 4.60 34.31 0.079 4.05 2.68 2 8.68 460 1.8E-03 3.7E+02 4.1E-04 16 0.478 5563 0.15% 2.00 0.65 0.03%0.026 0.34 0.079 0.765 3.93% 0.0065
12.467 5594.97 8.7 0.151 8.2 74.0 32.08 1.74%Slime Tailings 0.057 113.1 0.70 0.29 0.41 1 1.70 13.957 194.00 17.12 19 1.89% 2.6 71% 1.56 0.00 1.56 0 0.93 0.05 0.97 1.0 0.052 36.05 53.17 0.081 1.54 0.93 0.24 0.80 1.16 1.0 0.035 3.62 61.90 0.102 5.21 3.38 2 8.73 460 1.8E-03 3.7E+02 4.1E-04 16 0.479 5550 0.16% 2.00 0.65 0.03% 0.026 0.34 0.079 0.765 3.97% 0.0065
12.631 5594.81 7.3 0.133 7.1 27.0 11.70 1.82%Slime Tailings 0.057 113.1 0.71 0.29 0.41 1 1.70 12.121 168.48 14.41 16 2.02% 2.7 71% 1.57 0.00 1.57 0 0.93 0.05 0.97 1.0 0.052 35.11 49.52 0.077 1.47 0.93 0.22 0.80 1.16 1.0 0.036 4.24 61.11 0.101 5.12 3.30 2 8.78 460 1.8E-03 3.7E+02 4.1E-04 16 0.479 5536 0.16% 2.00 0.65 0.03% 0.026 0.34 0.079 0.765 4.01% 0.0066
12.795 5594.64 3.8 0.056 3.5 42.3 18.33 1.49%Slime Tailings 0.057 113.1 0.72 0.30 0.42 1 1.70 5.950 82.71 7.43 7 1.84% 3.0 71% 1.58 0.00 1.58 0 0.93 0.04 0.97 1.0 0.052 32.68 40.11 0.069 1.31 0.93 0.16 0.80 1.16 1.0 0.036 6.74 50.12 0.092 4.60 2.95 2 8.83 460 1.8E-03 3.7E+02 4.1E-04 16 0.479 5523 0.16% 2.00 0.65 0.03%0.027 0.34 0.079 0.765 4.06% 0.0067
12.959 5594.48 3.5 0.039 3.2 47.7 20.68 1.12%Slime Tailings 0.057 113.1 0.73 0.30 0.42 1 1.70 5.423 75.38 6.89 7 1.41% 3.0 71% 1.59 0.00 1.59 0 0.93 0.04 0.97 1.0 0.052 32.49 39.37 0.068 1.30 0.93 0.15 0.80 1.15 1.0 0.036 6.60 45.43 0.088 4.36 2.83 2 8.88 460 1.8E-03 3.7E+02 4.2E-04 16 0.480 5510 0.16% 2.00 0.65 0.03%0.027 0.34 0.079 0.765 4.10% 0.0067
13.123 5594.32 3.6 0.039 3.3 47.0 20.38 1.08%Slime Tailings 0.057 113.1 0.73 0.31 0.43 1 1.70 5.627 78.22 7.12 7 1.36% 3.0 71% 1.59 0.00 1.59 0 0.93 0.04 0.97 1.0 0.052 32.57 39.68 0.068 1.31 0.93 0.15 0.80 1.15 1.0 0.036 6.40 45.53 0.088 4.32 2.82 2 8.93 460 1.8E-03 3.7E+02 4.2E-04 16 0.480 5496 0.16% 2.00 0.65 0.03%0.027 0.34 0.079 0.765 4.14% 0.0068
13.287 5594.15 3.8 0.053 3.5 53.2 23.07 1.38%Slime Tailings 0.057 113.1 0.74 0.31 0.43 1 1.70 5.950 82.71 7.57 7 1.72% 3.0 71% 1.60 0.00 1.60 0 0.93 0.04 0.97 1.0 0.052 32.72 40.29 0.069 1.32 0.93 0.16 0.80 1.15 1.0 0.036 6.65 50.32 0.092 4.47 2.90 2 8.98 460 1.8E-03 3.7E+02 4.2E-04 16 0.480 5483 0.17% 2.00 0.65 0.03%0.027 0.34 0.079 0.765 4.18% 0.0069
13.451 5593.99 4.6 0.055 4.3 58.0 25.13 1.19%Slime Tailings 0.057 113.1 0.75 0.32 0.43 1 1.70 7.259 100.90 9.15 9 1.42% 2.9 71% 1.61 0.00 1.61 0 0.93 0.04 0.97 1.0 0.052 33.27 42.42 0.071 1.36 0.93 0.17 0.80 1.15 1.0 0.036 5.40 49.36 0.091 4.40 2.88 2 9.03 460 1.8E-03 3.7E+02 4.2E-04 16 0.481 5470 0.17% 2.00 0.65 0.03%0.028 0.34 0.079 0.765 4.22% 0.0069
13.615 5593.82 5.4 0.050 5.1 51.5 22.33 0.92%Slime Tailings 0.057 113.1 0.76 0.32 0.44 1 1.69 8.639 120.08 10.67 11 1.07% 2.7 71% 1.62 0.00 1.62 0 0.93 0.05 0.97 1.0 0.052 33.80 44.47 0.072 1.39 0.93 0.19 0.80 1.14 1.0 0.036 4.34 46.27 0.089 4.24 2.81 2 9.08 460 1.8E-03 3.7E+02 4.3E-04 16 0.481 5457 0.17% 2.00 0.65 0.03% 0.028 0.34 0.079 0.765 4.27% 0.0070
13.779 5593.66 4.7 0.059 4.3 53.8 23.30 1.26%Slime Tailings 0.057 113.1 0.77 0.33 0.44 1 1.68 7.298 101.44 9.13 9 1.51% 2.9 71% 1.63 0.00 1.63 0 0.92 0.04 0.97 1.0 0.052 33.27 42.40 0.071 1.36 0.93 0.17 0.80 1.14 1.0 0.036 5.57 50.85 0.092 4.37 2.87 2 9.13 460 1.8E-03 3.7E+02 4.3E-04 16 0.481 5445 0.17% 2.00 0.65 0.03%0.028 0.34 0.079 0.765 4.31% 0.0071
13.943 5593.50 4.5 0.065 4.2 53.8 23.33 1.45%Slime Tailings 0.057 113.1 0.78 0.33 0.45 1 1.67 6.927 96.29 8.70 8 1.75% 2.9 71% 1.64 0.00 1.64 0 0.92 0.04 0.97 1.0 0.052 33.12 41.81 0.070 1.35 0.93 0.17 0.80 1.14 1.0 0.036 6.12 53.22 0.094 4.42 2.89 2 9.18 460 1.8E-03 3.7E+02 4.3E-04 16 0.481 5432 0.17% 2.00 0.65 0.03%0.028 0.34 0.079 0.765 4.35% 0.0071
14.107 5593.33 4.6 0.067 4.3 54.2 23.47 1.45%Slime Tailings 0.057 113.1 0.79 0.34 0.45 1 1.66 7.093 98.59 8.89 8 1.75% 2.9 71% 1.65 0.00 1.65 0 0.92 0.04 0.97 1.0 0.052 33.18 42.07 0.070 1.36 0.93 0.17 0.80 1.14 1.0 0.036 6.02 53.54 0.094 4.40 2.88 2 9.23 460 1.8E-03 3.7E+02 4.3E-04 16 0.482 5419 0.18% 2.00 0.65 0.03%0.029 0.34 0.079 0.765 4.39% 0.0072
14.271 5593.17 4.6 0.064 4.3 55.3 23.95 1.38%Slime Tailings 0.057 113.1 0.80 0.34 0.46 1 1.65 7.042 97.88 8.84 8 1.67% 2.9 71% 1.66 0.00 1.66 0 0.92 0.04 0.97 1.0 0.052 33.17 42.00 0.070 1.36 0.93 0.17 0.80 1.14 1.0 0.036 5.96 52.69 0.094 4.33 2.85 2 9.28 460 1.8E-03 3.7E+02 4.4E-04 16 0.482 5407 0.18% 2.00 0.65 0.03%0.029 0.34 0.079 0.765 4.44% 0.0073
14.436 5593.00 4.7 0.050 4.3 52.5 22.75 1.07%Slime Tailings 0.057 113.1 0.81 0.35 0.46 1 1.63 7.090 98.55 8.86 8 1.30% 2.9 71% 1.67 0.00 1.67 0 0.92 0.04 0.97 1.0 0.052 33.17 42.03 0.070 1.36 0.92 0.17 0.80 1.13 1.0 0.036 5.44 48.21 0.090 4.14 2.75 2 9.33 460 1.8E-03 3.7E+02 4.4E-04 16 0.482 5395 0.18% 2.00 0.65 0.03%0.029 0.34 0.079 0.765 4.48% 0.0073
14.600 5592.84 3.9 0.045 3.6 48.9 21.19 1.14%Slime Tailings 0.057 113.1 0.82 0.35 0.46 1 1.62 5.905 82.08 7.43 7 1.44% 3.0 71% 1.68 0.00 1.68 0 0.92 0.04 0.97 1.0 0.052 32.68 40.11 0.069 1.33 0.92 0.16 0.80 1.13 1.0 0.036 6.51 48.41 0.090 4.12 2.73 2 9.38 500 1.8E-03 4.4E+02 3.7E-04 16 0.483 5382 0.12% 2.00 0.65 0.03%0.020 0.34 0.079 0.765 3.09% 0.0051
14.764 5592.68 3.7 0.025 3.4 47.0 20.37 0.68%Slime Tailings 0.057 113.1 0.83 0.36 0.47 1 1.61 5.477 76.13 6.91 6 0.87% 2.9 71% 1.69 0.00 1.69 0 0.92 0.04 0.97 1.0 0.051 32.49 39.40 0.068 1.32 0.92 0.15 0.80 1.13 1.0 0.036 5.93 40.97 0.084 3.81 2.57 2 9.43 500 1.8E-03 4.4E+02 3.7E-04 16 0.483 5370 0.12% 2.00 0.65 0.03%0.020 0.34 0.079 0.765 3.12% 0.0051
14.928 5592.51 3.7 0.014 3.5 43.2 18.70 0.38%Slime Tailings 0.057 113.1 0.84 0.36 0.47 1 1.60 5.535 76.94 6.93 6 0.48% 2.8 71% 1.70 0.00 1.70 0 0.92 0.04 0.97 1.0 0.051 32.50 39.43 0.068 1.33 0.92 0.15 0.80 1.13 1.0 0.036 5.06 35.03 0.079 3.56 2.44 2 9.48 500 1.8E-03 4.4E+02 3.8E-04 16 0.483 5358 0.12% 2.00 0.65 0.03%0.021 0.34 0.079 0.765 3.15% 0.0052
15.092 5592.35 4.0 0.031 3.7 46.9 20.31 0.77%Slime Tailings 0.057 113.1 0.85 0.37 0.48 1 1.59 5.911 82.16 7.40 7 0.98% 2.9 71% 1.71 0.00 1.71 0 0.91 0.04 0.97 1.0 0.051 32.67 40.07 0.069 1.34 0.92 0.16 0.80 1.13 1.0 0.036 5.81 42.99 0.086 3.83 2.58 2 9.53 500 1.8E-03 4.4E+02 3.8E-04 16 0.484 5346 0.12% 2.00 0.65 0.03%0.021 0.34 0.079 0.765 3.18% 0.0052
15.256 5592.18 6.6 0.057 6.5 28.1 12.19 0.86%Slime Tailings 0.057 113.1 0.86 0.37 0.48 1 1.58 10.179 141.48 12.14 12 0.99% 2.7 71% 1.72 0.00 1.72 0 0.91 0.05 0.97 1.0 0.051 34.32 46.46 0.074 1.45 0.92 0.20 0.80 1.12 1.0 0.036 3.86 46.90 0.089 3.94 2.70 2 9.58 500 1.8E-03 4.4E+02 3.8E-04 16 0.484 5334 0.12% 2.00 0.65 0.03% 0.021 0.34 0.079 0.765 3.21% 0.0053
15.420 5592.02 6.4 0.065 6.1 51.6 22.37 1.02%Slime Tailings 0.057 113.1 0.86 0.38 0.48 1 1.57 9.515 132.25 11.64 11 1.18% 2.7 71% 1.72 0.00 1.72 0 0.91 0.05 0.97 1.0 0.051 34.14 45.78 0.074 1.44 0.92 0.20 0.80 1.12 1.0 0.036 4.27 49.65 0.091 4.02 2.73 2 9.63 500 1.8E-03 4.4E+02 3.8E-04 16 0.484 5322 0.12% 2.00 0.65 0.03% 0.021 0.34 0.079 0.765 3.24% 0.0053
15.584 5591.86 6.4 0.063 6.0 64.8 28.06 0.98%Slime Tailings 0.057 113.1 0.87 0.39 0.49 1 1.56 9.358 130.07 11.60 11 1.14% 2.7 71% 1.73 0.00 1.73 0 0.91 0.05 0.97 1.0 0.051 34.13 45.73 0.074 1.44 0.92 0.20 0.80 1.12 1.0 0.036 4.23 49.10 0.091 3.97 2.71 2 9.68 500 1.8E-03 4.4E+02 3.8E-04 16 0.485 5311 0.12% 2.00 0.65 0.03% 0.021 0.34 0.079 0.765 3.27% 0.0054
15.748 5591.69 6.6 0.049 6.2 68.5 29.69 0.74%Sand-Slime Tailing 0.059 119.0 0.88 0.39 0.49 1 1.55 9.583 133.20 11.90 12 0.85% 2.7 47% 1.74 0.00 1.74 0 0.91 0.05 0.97 1.0 0.051 34.47 46.37 0.074 1.46 0.91 0.20 0.80 1.12 1.0 0.036 3.75 44.62 0.087 3.77 2.62 2 9.73 500 1.8E-03 4.6E+02 3.7E-04 10 0.234 6426 0.10% 2.00 0.65 0.03% 0.018 0.34 0.079 0.765 2.83% 0.0046
15.912 5591.53 7.0 0.046 6.5 70.8 30.66 0.66%Sand-Slime Tailing 0.059 119.0 0.89 0.40 0.50 1 1.53 10.004 139.05 12.41 12 0.76% 2.6 47% 1.75 0.00 1.75 0 0.91 0.05 0.97 1.0 0.051 34.65 47.06 0.075 1.47 0.91 0.20 0.80 1.12 1.0 0.036 3.49 43.25 0.086 3.70 2.58 2 9.78 500 1.8E-03 4.6E+02 3.7E-04 10 0.234 6411 0.11% 2.00 0.65 0.03% 0.019 0.34 0.079 0.765 2.86% 0.0047
16.076 5591.36 7.2 0.048 6.7 83.5 36.19 0.67%Sand-Slime Tailing 0.059 119.0 0.90 0.40 0.50 1 1.52 10.129 140.80 12.69 12 0.77% 2.6 47% 1.76 0.00 1.76 0 0.91 0.05 0.97 1.0 0.051 34.75 47.44 0.075 1.48 0.91 0.21 0.80 1.11 1.0 0.036 3.44 43.65 0.086 3.68 2.58 2 9.83 500 1.8E-03 4.6E+02 3.7E-04 10 0.235 6396 0.11% 2.00 0.65 0.03% 0.019 0.34 0.079 0.765 2.89% 0.0047
16.240 5591.20 7.2 0.050 6.7 88.8 38.47 0.69%Sand-Slime Tailing 0.059 119.0 0.91 0.41 0.51 1 1.51 10.072 140.00 12.67 12 0.79% 2.6 47% 1.77 0.00 1.77 0 0.91 0.05 0.97 1.0 0.051 34.75 47.42 0.075 1.48 0.91 0.21 0.80 1.11 1.0 0.036 3.49 44.25 0.087 3.67 2.58 2 9.88 500 1.8E-03 4.6E+02 3.7E-04 10 0.235 6382 0.11% 2.00 0.65 0.03% 0.019 0.34 0.079 0.765 2.92% 0.0048
16.404 5591.04 9.0 0.044 8.4 98.8 42.80 0.49%Sand-Slime Tailing 0.059 119.0 0.92 0.41 0.51 1 1.50 12.583 174.91 15.69 16 0.54% 2.5 47% 1.78 0.00 1.78 0 0.90 0.05 0.96 1.0 0.050 35.80 51.49 0.079 1.57 0.91 0.23 0.80 1.11 1.0 0.036 2.60 40.77 0.084 3.52 2.55 2 9.93 500 1.8E-03 4.6E+02 3.8E-04 10 0.235 6367 0.11% 2.00 0.65 0.03% 0.019 0.34 0.079 0.765 2.95% 0.0048
16.568 5590.87 9.0 0.056 8.4 104.5 45.27 0.62%Sand-Slime Tailing 0.059 119.0 0.93 0.42 0.52 1 1.49 12.495 173.68 15.64 16 0.69% 2.5 47% 1.79 0.00 1.79 0 0.90 0.05 0.96 1.0 0.050 35.79 51.43 0.079 1.57 0.91 0.23 0.80 1.11 1.0 0.036 2.82 44.05 0.087 3.61 2.59 2 9.98 500 1.8E-03 4.6E+02 3.8E-04 10 0.236 6353 0.11% 2.00 0.65 0.03% 0.019 0.34 0.079 0.765 2.98% 0.0049
16.732 5590.71 8.9 0.052 8.3 94.1 40.78 0.58%Sand-Slime Tailing 0.059 119.0 0.94 0.42 0.52 1 1.48 12.319 171.23 15.32 15 0.65% 2.5 47% 1.80 0.00 1.80 0 0.90 0.05 0.96 1.0 0.050 35.67 50.99 0.078 1.56 0.91 0.23 0.80 1.11 1.0 0.036 2.81 43.12 0.086 3.55 2.56 2 10.03 500 1.8E-03 4.6E+02 3.8E-04 10 0.236 6339 0.11% 2.00 0.65 0.03% 0.020 0.34 0.079 0.765 3.01% 0.0049
16.896 5590.54 8.2 0.074 7.6 99.3 43.01 0.90%Sand-Slime Tailing 0.059 119.0 0.95 0.43 0.53 1 1.47 11.205 155.74 14.07 14 1.02% 2.6 47% 1.81 0.00 1.81 0 0.90 0.05 0.96 1.0 0.050 35.24 49.31 0.077 1.53 0.90 0.22 0.80 1.10 1.0 0.036 3.53 49.61 0.091 3.75 2.64 2 10.08 500 1.8E-03 4.6E+02 3.8E-04 10 0.236 6324 0.11% 2.00 0.65 0.03% 0.020 0.34 0.079 0.765 3.04% 0.0050
17.060 5590.38 8.3 0.057 7.7 101.1 43.83 0.68%Sand-Slime Tailing 0.059 119.0 0.96 0.43 0.53 1 1.46 11.230 156.10 14.11 14 0.77% 2.6 47% 1.82 0.00 1.82 1 0.90 0.05 0.96 1.0 0.050 35.25 49.37 0.077 1.53 0.90 0.22 0.80 1.10 1.0 0.036 3.20 45.13 0.088 3.57 2.55 2 10.13 500 1.8E-03 4.6E+02 3.8E-04 10 0.237 6313 0.11% 2.00 0.65 0.03% 0.020 0.34 0.079 0.765 3.08% 0.0050
17.224 5590.22 8.1 0.045 7.5 92.6 40.14 0.56%Sand-Slime Tailing 0.059 119.0 0.97 0.44 0.54 1 1.45 10.878 151.21 13.61 13 0.63% 2.6 47% 1.83 0.01 1.82 1 0.90 0.05 0.96 1.0 0.050 35.07 48.68 0.076 1.52 0.90 0.21 0.80 1.10 1.0 0.036 3.09 42.01 0.085 3.43 2.47 2 10.18 500 1.8E-03 4.6E+02 3.9E-04 10 0.237 6306 0.12% 2.00 0.65 0.03% 0.020 0.34 0.079 0.765 3.11% 0.0051
P = γeff*(Geff
/Gmax)
(tsf)
Volumetric Strain for Design Event, εv (%)
Incrementa
l Consolidation (ft)
CN
Volumetric
Strain for
Design
Event, εv (%)
Incremental Consolidation (ft)
TOTAL SEISMIC SETTLEMENT (FT):
Midpoint Depth at t1, z1
Shear Wave Velocity, Vs
Soil Density, ρ (tcf)b
Threshhol
d Shear Strain, γtv
(%)
Volumetri
c Strain at
15 Cycles,
εc-15 (%)Rc
Plasticity Index, PI g1 g2
Shear Strain, γ (%)a
Effective Stress at Bottom of Layer
Effective Stress at Midpoint of Layer FINAL COVER
Erosion Protection Layer
Water Storage/Rooting Zone Layer
qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Equil Pore Pressure at Midpoint of Layer (tsf)
Max Shear
Strain
Modulus,
Gmax (tsf)
Unit Weight (tcf)
Unit Weight (pcf)
Total Stress at Bottom of Layer
Total Stress at Midpoint of Layer
Equil Pore Pressure at Bottom of Layer
Cyclic Resistance Ratio
FoS
Cyclic Stress Ratio
FoS
∆qc1n qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Threshhol
d Shear
Strain, γtv (%)
Volumetric Strain at 15 Cycles, εc-15 (%)RcCNg1g2
Shear
Strain, γ ab
Seismic Settlement Analysis - Stewart et al (2004)
Shear Wave Velocity, Vs
High Compaction Layer
Platform/Random Fill Layer
Pw (u2)Pw (u2)
2013 CPT Data from ConeTec CPT Data Interpretations
fs/qt
Material
Type (as determined by fines
Unit Weight Unit Weight
Total
Stress
at time of CPT
Depth
at time of CPT Elevation qt fs qc
Effective
Stress at
time of CPT
Saturated
at time of CPT
Type Index,
Ic FC
Youd, et al (2001)
Max. Horiz. Acceleration, Amax/g: 0.15
Earthquake Moment Magnitude, M:
Idriss and Boulanger (2008)
Max. Horiz. Acceleration, Amax/g:
Earthquake Moment Magnitude, M:
Magnitude Scaling Factor, MSF:
WHITE MESA TAILINGS REPOSITORY LIQUEFACTION AND SEISMIC SETTLEMENT ANALYSES - 3-6N Elev. at Top of Layer (ft)
Elev. At Midpoint of Layer (ft)
Elev. At Bottom of Layer
Thickness of Layer (ft)
5.5
Magnitude Scaling Factor, MSF:
Equil
Pore
Pressure at time of
Conditions at t1 Liquefaction Triggering AnalysesEquil
Pore Pressure at t1CN qc1 qc1 qc1N
Normalized
Cone
Penetration Resistance, Qt
Normalize
d Friction
Ratio, Fr (%)
Total Stress at t1 Liquefiable?1=Yes
2=No
Cyclic Stress RatioEffective Stress at t1
Saturated at t1
Idriss & Boulanger (2008)
CSR
M=7.5,
s'v=1atm
Kc
Scaling Factor for stress ration, rm
Volumetric Strain Ratio for Site-Specific Design Earthq
Equiv. Number of Uniform Strain Cycles, N
Youd et al. (2001)
CSR
M=7.5,
s'v=1atm
Depth at t1, z1
Soil Density, ρ
Maximum Shear Strain
Modulus,
Gmax
P =
γeff*(Geff/Gmax)
Plastici
ty Index, PI
Liquef_SeismicSettle_30Aug2015.xls Page 26 of 29
Energy Fuels Resources (USA) Inc.White Mesa Mill
Seismic Settlement Analyses
Data File: 13-52106_SP3-6N-BSC-CPT 5604.20 Water surface elevation during CPT investigation (ft am5607.44 Ground Surface Elevation at time of CPT (ft amsl)
Location: White Mesa 2013 CPT Investigation 0.15 5599.16 Water surface elevation at t0 (ft amsl)5623.62 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl)
..\..\..\6.2.3 Field Data\2013 Field Investigation\Conetec Dat 5.5 5590.44 Water surface elevation at t1 (ft amsl) 0.50 Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after plac ###### 5623.37 5623.12 0.50 0.055 110 0.028 0.014 0.00 0.00 0.028 0.014 0.08 508 1.7E-03 4.4E+02 3.0E-06 11 0.068 46696 0.00% 1.20 0.80 0.04% 0.000 0.32 0.133 0.778 0.00% 0.0000
Tailings Sands 1.69 5585.44 Water surface elevation at t2 (ft amsl)3.50 Thickness of Water Storage/Rooting Zone (ft)###### 5621.37 5619.62 3.50 0.054 107 0.215 0.121 0.00 0.00 0.215 0.121 0.69 508 1.7E-03 4.3E+02 2.8E-05 11 0.118 18930 0.00% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
Tailings Sand-Slimes 3.50 Thickness of High Compaction Layer (ft)###### 5617.87 5616.12 3.50 0.060 120 0.424 0.320 0.00 0.00 0.424 0.320 1.75 508 1.9E-03 4.8E+02 6.5E-05 11 0.152 12657 0.01% 0.65 0.75 0.02% 0.000 0.34 0.079 0.765 0.00% 0.0000
Tailings Slimes 1.44 8.68 Thickness of Random/Platform Fill on on top of existing interim cover (ft) ###### 5611.78 5607.44 8.68 0.050 101 0.861 0.643 0.00 0.00 0.861 0.643 3.61 508 1.6E-03 4.0E+02 1.6E-04 11 0.181 9468 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
Interim Cover 0.47 1720.10 Additional Stress due to Final Cover Placement, ΔσFC (psf)
Cells Requiring User Input/Manipulation 2.21 2.21 7.51 5585.44 Elevation of bottom of tailings (liner) (ft amsl)
0.539
rd Cσ Kσ Ka rd Dr f Kσ Ka Avg
(ft) (ft amsl) TSF TSF TSF (ft) PSI (%) (tcf) (pcf) (tsf)(tsf)(tsf) 1=Yes TSF MPa % (tsf)(tsf)(tsf) 1=Yes FoS m
0=No 0=No (ft/sec) (tcf) tsf tsf (%)
P = γeff*(Geff
/Gmax)
(tsf)
Volumetric Strain for Design Event, εv (%)
Incrementa
l Consolidation (ft)
CN
Volumetric
Strain for
Design
Event, εv (%)
Incremental Consolidation (ft)
TOTAL SEISMIC SETTLEMENT (FT):
Midpoint Depth at t1, z1
Shear Wave Velocity, Vs
Soil Density, ρ (tcf)b
Threshhol
d Shear Strain, γtv
(%)
Volumetri
c Strain at
15 Cycles,
εc-15 (%)Rc
Plasticity Index, PI g1 g2
Shear Strain, γ (%)a
Effective Stress at Bottom of Layer
Effective Stress at Midpoint of Layer FINAL COVER
Erosion Protection Layer
Water Storage/Rooting Zone Layer
qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Equil Pore Pressure at Midpoint of Layer (tsf)
Max Shear
Strain
Modulus,
Gmax (tsf)
Unit Weight (tcf)
Unit Weight (pcf)
Total Stress at Bottom of Layer
Total Stress at Midpoint of Layer
Equil Pore Pressure at Bottom of Layer
Cyclic Resistance Ratio
FoS
Cyclic Stress Ratio
FoS
∆qc1n qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Threshhol
d Shear
Strain, γtv (%)
Volumetric Strain at 15 Cycles, εc-15 (%)RcCNg1g2
Shear
Strain, γ ab
Seismic Settlement Analysis - Stewart et al (2004)
Shear Wave Velocity, Vs
High Compaction Layer
Platform/Random Fill Layer
Pw (u2)Pw (u2)
2013 CPT Data from ConeTec CPT Data Interpretations
fs/qt
Material
Type (as determined by fines
Unit Weight Unit Weight
Total
Stress
at time of CPT
Depth
at time of CPT Elevation qt fs qc
Effective
Stress at
time of CPT
Saturated
at time of CPT
Type Index,
Ic FC
Youd, et al (2001)
Max. Horiz. Acceleration, Amax/g: 0.15
Earthquake Moment Magnitude, M:
Idriss and Boulanger (2008)
Max. Horiz. Acceleration, Amax/g:
Earthquake Moment Magnitude, M:
Magnitude Scaling Factor, MSF:
WHITE MESA TAILINGS REPOSITORY LIQUEFACTION AND SEISMIC SETTLEMENT ANALYSES - 3-6N Elev. at Top of Layer (ft)
Elev. At Midpoint of Layer (ft)
Elev. At Bottom of Layer
Thickness of Layer (ft)
5.5
Magnitude Scaling Factor, MSF:
Equil
Pore
Pressure at time of
Conditions at t1 Liquefaction Triggering AnalysesEquil
Pore Pressure at t1CN qc1 qc1 qc1N
Normalized
Cone
Penetration Resistance, Qt
Normalize
d Friction
Ratio, Fr (%)
Total Stress at t1 Liquefiable?1=Yes
2=No
Cyclic Stress RatioEffective Stress at t1
Saturated at t1
Idriss & Boulanger (2008)
CSR
M=7.5,
s'v=1atm
Kc
Scaling Factor for stress ration, rm
Volumetric Strain Ratio for Site-Specific Design Earthq
Equiv. Number of Uniform Strain Cycles, N
Youd et al. (2001)
CSR
M=7.5,
s'v=1atm
Depth at t1, z1
Soil Density, ρ
Maximum Shear Strain
Modulus,
Gmax
P =
γeff*(Geff/Gmax)
Plastici
ty Index, PI
17.388 5590.05 6.7 0.047 6.0 104.9 45.45 0.70%Sand-Slime Tailing 0.059 119.0 0.98 0.44 0.54 1 1.44 8.687 120.75 11.19 11 0.82% 2.7 47% 1.84 0.01 1.83 1 0.90 0.05 0.97 1.0 0.050 34.22 45.41 0.073 1.45 0.90 0.19 0.80 1.10 1.0 0.036 3.97 44.45 0.087 3.47 2.46 2 10.23 500 1.8E-03 4.6E+02 3.9E-04 10 0.237 6300 0.12% 2.00 0.65 0.03% 0.021 0.34 0.079 0.765 3.15% 0.0052
17.552 5589.89 6.6 0.046 6.0 96.3 41.71 0.70%Sand-Slime Tailing 0.059 119.0 0.99 0.45 0.54 1 1.43 8.544 118.76 10.92 10 0.82% 2.7 47% 1.85 0.02 1.83 1 0.90 0.05 0.97 1.0 0.050 34.13 45.05 0.073 1.45 0.90 0.19 0.80 1.10 1.0 0.037 4.06 44.36 0.087 3.44 2.44 2 10.28 500 1.8E-03 4.6E+02 3.9E-04 10 0.237 6293 0.12% 2.00 0.65 0.03% 0.021 0.34 0.079 0.765 3.18% 0.0052
17.716 5589.72 6.0 0.052 5.5 92.4 40.06 0.86%Slime Tailings 0.057 113.1 1.00 0.45 0.55 1 1.42 7.782 108.16 9.99 9 1.03% 2.8 71% 1.86 0.02 1.84 1 0.89 0.05 0.97 1.0 0.051 33.57 43.56 0.072 1.42 0.90 0.18 0.80 1.09 1.0 0.037 4.73 47.21 0.089 3.50 2.46 2 10.33 500 1.8E-03 4.4E+02 4.1E-04 16 0.488 5185 0.14% 2.00 0.65 0.03% 0.024 0.34 0.079 0.765 3.72% 0.0061
17.880 5589.56 5.7 0.042 5.2 93.9 40.69 0.73%Slime Tailings 0.057 113.1 1.01 0.46 0.55 1 1.41 7.283 101.24 9.42 9 0.89% 2.8 71% 1.87 0.03 1.84 1 0.89 0.04 0.97 1.0 0.051 33.37 42.79 0.071 1.40 0.90 0.18 0.80 1.09 1.0 0.037 4.73 44.60 0.087 3.38 2.39 2 10.38 500 1.8E-03 4.4E+02 4.2E-04 16 0.488 5180 0.14% 2.00 0.65 0.03% 0.025 0.34 0.079 0.765 3.75% 0.0062
18.044 5589.40 6.1 0.034 5.6 77.5 33.57 0.56%Slime Tailings 0.057 113.1 1.02 0.46 0.56 1 1.41 7.873 109.44 9.93 9 0.67% 2.7 71% 1.88 0.03 1.85 1 0.89 0.05 0.97 1.0 0.051 33.55 43.48 0.072 1.41 0.90 0.18 0.80 1.09 1.0 0.037 4.15 41.21 0.084 3.25 2.33 2 10.43 500 1.8E-03 4.4E+02 4.2E-04 16 0.488 5175 0.15% 2.00 0.65 0.03% 0.025 0.34 0.079 0.765 3.79% 0.0062
18.208 5589.23 5.2 0.036 4.7 84.2 36.50 0.69%Slime Tailings 0.057 113.1 1.03 0.47 0.56 1 1.40 6.570 91.32 8.48 7 0.86% 2.8 71% 1.89 0.04 1.85 1 0.89 0.04 0.97 1.0 0.051 33.04 41.53 0.070 1.38 0.89 0.17 0.80 1.09 1.0 0.037 5.14 43.60 0.086 3.29 2.33 2 10.48 500 1.8E-03 4.4E+02 4.2E-04 16 0.488 5171 0.15% 2.00 0.65 0.03% 0.025 0.34 0.079 0.765 3.83% 0.0063
18.372 5589.07 5.4 0.036 4.9 84.8 36.76 0.66%Slime Tailings 0.057 113.1 1.04 0.47 0.57 1 1.39 6.824 94.85 8.78 8 0.82% 2.8 71% 1.90 0.04 1.85 1 0.89 0.04 0.97 1.0 0.051 33.15 41.93 0.070 1.38 0.89 0.17 0.80 1.09 1.0 0.037 4.92 43.24 0.086 3.25 2.32 2 10.53 500 1.8E-03 4.4E+02 4.2E-04 16 0.489 5166 0.15% 2.00 0.65 0.03% 0.025 0.34 0.079 0.765 3.87% 0.0063
18.537 5588.90 6.0 0.036 5.4 86.7 37.59 0.60%Slime Tailings 0.057 113.1 1.05 0.48 0.57 1 1.38 7.489 104.10 9.57 9 0.73% 2.8 71% 1.91 0.05 1.86 1 0.89 0.04 0.97 1.0 0.051 33.42 42.99 0.071 1.40 0.89 0.18 0.80 1.09 1.0 0.037 4.42 42.33 0.085 3.20 2.30 2 10.58 500 1.8E-03 4.4E+02 4.2E-04 16 0.489 5161 0.15% 2.00 0.65 0.03% 0.026 0.34 0.079 0.765 3.90% 0.0064
22.000 5585.44 Slime Tailings 0.057 113.1 2.10 0.10 2.00 1 11.64 538 1.8E-03 5.1E+02 4.0E-04 16 0.493 5008 0.13% 2.00 0.65 0.03% 0.022 0.34 0.079 0.765 3.37% 0.1167
Extra layer added to analyze seismic settlement of tailings below the bottom of CPT investigation.
Liquef_SeismicSettle_30Aug2015.xls Page 27 of 29
Energy Fuels Resources (USA) Inc.White Mesa Mill
Seismic Settlement Analyses
Data File: 13-52106_SP3-8N-BSC-CPT 5604.90 Water surface elevation during CPT investigation (ft5608.37 Ground Surface Elevation at time of CPT (ft amsl)
Location: White Mesa 2013 CPT Investigation 0.15 5600.09 Water surface elevation at t0 (ft amsl)5623.82 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl)
..\..\..\6.2.3 Field Data\2013 Field Investigation\Conetec Dat 5.5 5595.24 Water surface elevation at t1 (ft amsl) 0.50 Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after plac ###### 5623.57 5623.32 0.50 0.055 110 0.028 0.014 0.00 0.00 0.028 0.014 0.08 508 1.7E-03 4.4E+02 3.0E-06 11 0.068 46696 0.00% 1.20 0.80 0.04% 0.000 0.32 0.133 0.778 0.00% 0.0000
Tailings Sands 1.69 5590.24 Water surface elevation at t2 (ft amsl)3.50 Thickness of Water Storage/Rooting Zone (ft)###### 5621.57 5619.82 3.50 0.054 107 0.215 0.121 0.00 0.00 0.215 0.121 0.69 508 1.7E-03 4.3E+02 2.8E-05 11 0.118 18930 0.00% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
Tailings Sand-Slimes 3.50 Thickness of High Compaction Layer (ft)###### 5618.07 5616.32 3.50 0.060 120 0.424 0.320 0.00 0.00 0.424 0.320 1.75 508 1.9E-03 4.8E+02 6.5E-05 11 0.152 12657 0.01% 0.65 0.75 0.02% 0.000 0.34 0.079 0.765 0.00% 0.0000
Tailings Slimes 1.44 7.95 Thickness of Random/Platform Fill on on top of existing interim cover (ft) ###### 5612.35 5608.37 7.95 0.050 101 0.825 0.624 0.00 0.00 0.825 0.624 3.50 508 1.6E-03 4.0E+02 1.5E-04 11 0.180 9583 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
Interim Cover 0.47 1646.57 Additional Stress due to Final Cover Placement, ΔσFC (psf)
Cells Requiring User Input/Manipulation 2.21 2.21 7.51 5590.24 Elevation of bottom of tailings (liner) (ft amsl)
0.341
rd Cσ Kσ Ka rd Dr f Kσ Ka Avg
(ft) (ft amsl) TSF TSF TSF (ft) PSI (%) (tcf) (pcf) (tsf)(tsf)(tsf) 1=Yes TSF MPa % (tsf)(tsf)(tsf) 1=Yes FoS m
0=No 0=No (ft/sec) (tcf) tsf tsf (%)
0.164 5608.21 4.6 0.040 4.6 1.7 0.73 0.87%Interim Cover 0.050 100.7 0.01 0.00 0.01 0 1.70 7.837 108.93 9.12 558 0.87% 1.4 51% 0.83 0.00 0.83 0 1.00 0.04 1.00 1.0 0.058 33.52 42.65 0.071 1.22 0.96 0.17 0.80 2.53 1.0 0.017 1.00 9.12 0.058 141.30 71.26 2 4.76 594 1.6E-03 5.5E+02 1.5E-04 11 0.194 8508 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
0.328 5608.04 22.0 0.044 22.0 2.8 1.22 0.20%Interim Cover 0.050 100.7 0.02 0.00 0.02 0 1.70 37.315 518.68 43.37 1329 0.20% 0.6 51% 0.84 0.00 0.84 0 1.00 0.07 1.00 1.0 0.058 45.54 88.92 0.125 2.16 0.96 0.38 0.80 2.20 1.0 0.019 1.00 43.37 0.086 105.69 53.93 2 4.81 594 1.6E-03 5.5E+02 1.5E-04 11 0.194 8473 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
0.492 5607.88 41.2 0.114 41.1 4.2 1.81 0.28%Interim Cover 0.050 100.7 0.02 0.00 0.02 0 1.70 69.938 972.14 81.28 1660 0.28% 0.7 51% 0.85 0.00 0.85 0 1.00 0.09 1.00 1.0 0.058 58.84 140.12 0.233 4.02 0.96 0.52 0.74 2.52 1.0 0.017 1.00 81.28 0.130 106.34 55.18 2 4.86 594 1.6E-03 5.5E+02 1.5E-04 11 0.195 8439 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
0.656 5607.71 59.5 0.362 59.4 4.7 2.05 0.61%Interim Cover 0.050 100.7 0.03 0.00 0.03 0 1.70 101.031 ###### 117.40 1798 0.61% 1.0 51% 0.86 0.00 0.86 0 1.00 0.12 1.00 1.0 0.058 71.52 188.92 0.721 12.47 0.96 0.63 0.69 2.77 1.0 0.015 1.00 117.40 0.230 141.52 76.99 2 4.91 594 1.6E-03 5.5E+02 1.5E-04 11 0.195 8405 0.02%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
0.820 5607.55 65.8 0.430 65.7 4.5 1.93 0.65%Interim Cover 0.050 100.7 0.04 0.00 0.04 0 1.70 111.758 ###### 129.86 1591 0.65% 1.1 51% 0.86 0.00 0.86 0 1.00 0.13 1.00 1.0 0.058 75.89 205.75 1.000 17.31 0.96 0.66 0.67 2.72 1.0 0.016 1.00 129.86 0.284 139.38 78.34 2 4.96 594 1.6E-03 5.5E+02 1.5E-04 11 0.196 8372 0.02%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
0.984 5607.39 69.7 0.402 69.6 3.8 1.66 0.58%Interim Cover 0.050 100.7 0.05 0.00 0.05 0 1.70 118.371 ###### 137.53 1404 0.58% 1.0 51% 0.87 0.00 0.87 0 1.00 0.14 1.00 1.0 0.058 78.58 216.11 1.000 17.33 0.96 0.68 0.66 2.63 1.0 0.016 1.00 137.53 0.322 131.88 74.60 2 5.01 594 1.6E-03 5.5E+02 1.5E-04 11 0.196 8339 0.02%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.148 5607.22 68.4 0.655 68.4 3.8 1.64 0.96%Interim Cover 0.050 100.7 0.06 0.00 0.06 0 1.70 116.314 ###### 135.14 1183 0.96% 1.3 51% 0.88 0.00 0.88 0 1.00 0.14 1.00 1.0 0.058 77.74 212.88 1.000 17.35 0.96 0.67 0.66 2.48 1.0 0.017 1.00 135.14 0.310 108.73 63.04 2 5.06 594 1.6E-03 5.5E+02 1.6E-04 11 0.196 8306 0.02%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.312 5607.06 77.9 0.651 77.9 3.0 1.29 0.84%Interim Cover 0.050 100.7 0.07 0.00 0.07 0 1.70 132.464 ###### 153.89 1178 0.84% 1.2 51% 0.89 0.00 0.89 0 1.00 0.17 0.99 1.0 0.057 84.32 238.21 1.000 17.39 0.96 0.72 0.64 2.51 1.0 0.017 1.00 153.89 0.419 128.81 73.10 2 5.11 594 1.6E-03 5.5E+02 1.6E-04 11 0.197 8274 0.02%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.476 5606.89 71.1 0.676 71.0 6.8 2.96 0.95%Interim Cover 0.050 100.7 0.07 0.00 0.07 0 1.70 120.768 ###### 140.35 955 0.95% 1.3 51% 0.90 0.00 0.90 0 1.00 0.15 0.99 1.0 0.057 79.57 219.92 1.000 17.41 0.96 0.68 0.66 2.31 1.0 0.018 1.00 140.35 0.337 92.18 54.79 2 5.16 594 1.6E-03 5.5E+02 1.6E-04 11 0.197 8242 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.640 5606.73 61.8 0.871 61.7 6.0 2.61 1.41%Interim Cover 0.050 100.7 0.08 0.00 0.08 0 1.70 104.941 ###### 121.96 747 1.41% 1.5 51% 0.91 0.00 0.91 0 1.00 0.13 0.99 1.0 0.057 73.12 195.08 0.917 15.97 0.96 0.64 0.68 2.11 1.0 0.020 1.00 121.96 0.249 61.23 38.60 2 5.21 594 1.6E-03 5.5E+02 1.6E-04 11 0.198 8211 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.804 5606.57 70.3 1.290 70.3 5.1 2.22 1.83%Interim Cover 0.050 100.7 0.09 0.00 0.09 0 1.70 119.476 ###### 138.83 773 1.84% 1.6 51% 0.91 0.00 0.91 0 1.00 0.15 0.99 1.0 0.057 79.04 217.87 1.000 17.45 0.96 0.68 0.66 2.15 1.0 0.020 1.00 138.83 0.329 73.63 45.54 2 5.26 594 1.6E-03 5.5E+02 1.6E-04 11 0.198 8180 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.968 5606.40 106.9 2.471 106.9 8.4 3.62 2.31%Interim Cover 0.050 100.7 0.10 0.00 0.10 0 1.70 181.679 ###### 211.11 1078 2.31% 1.6 51% 0.92 0.00 0.92 0 1.00 0.30 0.98 1.0 0.057 104.41 315.52 1.000 17.68 0.96 0.84 0.60 2.37 1.0 0.018 1.00 210.84 1.000 205.32 111.50 2 5.31 594 1.6E-03 5.5E+02 1.6E-04 11 0.199 8149 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.133 5606.24 99.5 2.832 99.4 11.5 4.99 2.85%Interim Cover 0.050 100.7 0.11 0.00 0.11 0 1.70 168.997 ###### 196.42 925 2.85% 1.7 51% 0.93 0.00 0.93 0 1.00 0.25 0.98 1.0 0.057 99.25 295.67 1.000 17.67 0.96 0.81 0.60 2.30 1.0 0.018 1.07 210.34 1.000 189.61 103.64 2 5.36 594 1.6E-03 5.5E+02 1.6E-04 11 0.199 8119 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.297 5606.07 93.6 3.017 93.6 6.8 2.93 3.22%Interim Cover 0.050 100.7 0.12 0.00 0.12 0 1.70 159.035 ###### 184.79 808 3.23% 1.8 51% 0.94 0.00 0.94 0 1.00 0.22 0.98 1.0 0.057 95.17 279.96 1.000 17.68 0.96 0.78 0.61 2.20 1.0 0.019 1.12 206.98 1.000 176.13 96.91 2 5.41 594 1.6E-03 5.5E+02 1.7E-04 11 0.200 8090 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.461 5605.91 68.6 2.531 68.6 1.4 0.62 3.69%Interim Cover 0.050 100.7 0.12 0.00 0.12 0 1.70 116.569 ###### 135.41 552 3.70% 1.9 51% 0.95 0.00 0.95 0 1.00 0.14 0.99 1.0 0.057 77.84 213.24 1.000 17.59 0.96 0.67 0.66 1.92 1.0 0.022 1.22 165.03 1.000 164.46 91.02 2 5.46 594 1.6E-03 5.5E+02 1.7E-04 11 0.200 8060 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.625 5605.75 95.3 2.541 95.3 9.0 3.88 2.67%Interim Cover 0.050 100.7 0.13 0.00 0.13 0 1.70 161.976 ###### 188.24 720 2.67% 1.8 51% 0.96 0.00 0.96 0 1.00 0.23 0.98 1.0 0.056 96.38 284.61 1.000 17.80 0.96 0.79 0.60 2.10 1.0 0.020 1.08 202.56 1.000 154.24 86.02 2 5.51 594 1.6E-03 5.5E+02 1.7E-04 11 0.201 8031 0.03% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.789 5605.58 99.4 3.003 99.4 5.2 2.27 3.02%Interim Cover 0.050 100.7 0.14 0.00 0.14 0 1.70 168.912 ###### 196.25 707 3.03% 1.8 51% 0.96 0.00 0.96 0 0.99 0.25 0.97 1.0 0.056 99.19 295.43 1.000 17.90 0.96 0.81 0.60 2.07 1.0 0.020 1.11 218.70 1.000 145.22 81.56 2 5.56 594 1.6E-03 5.5E+02 1.7E-04 11 0.201 8003 0.03% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.953 5605.42 96.2 3.312 96.2 12.2 5.30 3.44%Interim Cover 0.050 100.7 0.15 0.00 0.15 0 1.70 163.489 ###### 190.03 646 3.45% 1.9 51% 0.97 0.00 0.97 0 0.99 0.24 0.97 1.0 0.056 97.01 287.04 1.000 17.91 0.96 0.80 0.60 2.01 1.0 0.021 1.17 221.96 1.000 137.21 77.56 2 5.61 594 1.6E-03 5.5E+02 1.7E-04 11 0.201 7974 0.03% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
3.117 5605.25 92.1 3.557 92.0 12.7 5.51 3.86%Interim Cover 0.050 100.7 0.16 0.00 0.16 0 1.70 156.451 ###### 181.87 586 3.87% 1.9 51% 0.98 0.00 0.98 0 0.99 0.22 0.97 1.0 0.056 94.14 276.01 1.000 17.92 0.96 0.78 0.61 1.94 1.0 0.022 1.23 223.34 1.000 130.04 73.98 2 5.66 495 1.6E-03 3.8E+02 2.5E-04 11 0.202 7946 0.05% 2.00 0.65 0.03% 0.008 0.34 0.079 0.765 1.25% 0.0021
3.281 5605.09 80.8 3.387 80.6 37.5 16.27 4.19%Slime Tailings 0.041 82.7 0.16 0.00 0.16 0 1.70 137.037 ###### 159.62 493 4.20% 2.0 71% 0.99 0.00 0.99 0 0.99 0.17 0.98 1.0 0.056 85.67 245.30 1.000 17.86 0.96 0.73 0.64 1.83 1.0 0.023 1.30 207.57 1.000 124.71 71.28 2 5.71 495 1.3E-03 3.1E+02 3.1E-04 16 0.454 6696 0.10% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.60% 0.0043
3.445 5604.93 122.2 2.584 121.9 40.5 17.53 2.12%Sand Tailings 0.051 102.8 0.17 0.00 0.17 0 1.61 195.753 ###### 227.83 708 2.12% 1.7 18% 1.00 0.00 1.00 0 0.99 0.30 0.96 1.0 0.055 80.33 308.16 1.000 18.24 0.96 0.87 0.60 1.90 1.0 0.022 1.01 231.08 1.000 118.64 68.44 2 5.76 495 1.6E-03 3.9E+02 2.5E-04 0 0.206 10223 0.07% 2.20 1.00 0.03% 0.001 0.34 0.079 0.765 0.15% 0.0002
3.609 5604.76 107.6 2.292 107.6 12.0 5.18 2.13%Sand-Slime Tailing 0.059 119.0 0.18 0.00 0.18 1 1.66 178.278 ###### 207.20 605 2.13% 1.7 47% 1.01 0.00 1.01 0 0.99 0.29 0.96 1.0 0.055 102.97 310.17 1.000 18.28 0.96 0.83 0.60 1.88 1.0 0.022 1.03 214.34 1.000 115.07 66.67 2 5.81 495 1.8E-03 4.5E+02 2.2E-04 10 0.204 8074 0.04%2.00 0.65 0.03% 0.005 0.34 0.079 0.765 0.72% 0.0012
3.773 5604.60 78.1 1.653 78.1 6.0 2.59 2.12%Sand-Slime Tailing 0.059 119.0 0.19 0.01 0.18 1 1.70 132.702 ###### 154.20 427 2.12% 1.8 47% 1.01 0.00 1.01 0 0.99 0.17 0.97 1.0 0.056 84.38 238.58 1.000 17.97 0.96 0.72 0.64 1.74 1.0 0.024 1.08 166.26 1.000 112.18 65.08 2 5.86 495 1.8E-03 4.5E+02 2.2E-04 10 0.204 8042 0.04% 2.00 0.65 0.03% 0.005 0.34 0.079 0.765 0.75% 0.0012
3.937 5604.43 66.3 1.592 66.2 9.0 3.89 2.40%Sand-Slime Tailing 0.059 119.0 0.20 0.01 0.19 1 1.70 112.540 ###### 130.82 353 2.41% 1.8 47% 1.02 0.00 1.02 0 0.99 0.14 0.98 1.0 0.056 76.18 207.00 1.000 17.92 0.95 0.66 0.67 1.66 1.0 0.025 1.14 149.61 0.391 42.84 30.38 2 5.91 495 1.8E-03 4.5E+02 2.2E-04 10 0.204 8010 0.04% 2.00 0.65 0.03% 0.005 0.34 0.079 0.765 0.78% 0.0013
4.101 5604.27 57.7 1.714 57.7 8.7 3.75 2.97%Sand-Slime Tailing 0.059 119.0 0.21 0.02 0.19 1 1.70 98.005 ###### 113.93 300 2.98% 2.0 47% 1.03 0.00 1.03 0 0.99 0.12 0.98 1.0 0.056 70.26 184.19 0.612 10.95 0.95 0.62 0.69 1.59 1.0 0.026 1.26 143.03 0.352 37.62 24.29 2 5.96 495 1.8E-03 4.5E+02 2.2E-04 10 0.205 7979 0.04% 2.00 0.65 0.03% 0.005 0.34 0.079 0.765 0.81% 0.0013
4.265 5604.10 99.5 1.694 99.3 20.2 8.74 1.70%Sand Tailings 0.062 123.5 0.22 0.02 0.20 1 1.66 164.464 ###### 191.26 505 1.71% 1.6 18% 1.04 0.00 1.04 0 0.99 0.24 0.95 1.0 0.054 70.98 262.24 1.000 18.38 0.95 0.80 0.60 1.80 1.0 0.023 1.00 190.83 1.000 104.15 61.26 2 6.01 495 1.9E-03 4.7E+02 2.2E-04 0 0.208 10023 0.05% 2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.07% 0.0001
4.429 5603.94 96.3 1.854 96.2 10.5 4.55 1.93%Sand Tailings 0.062 123.5 0.23 0.03 0.20 1 1.66 159.735 ###### 185.65 477 1.93% 1.7 18% 1.05 0.00 1.05 0 0.99 0.22 0.95 1.0 0.054 69.55 255.20 1.000 18.38 0.95 0.79 0.61 1.77 1.0 0.024 1.04 192.83 1.000 101.60 59.99 2 6.06 495 1.9E-03 4.7E+02 2.2E-04 0 0.209 9984 0.05% 2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.07% 0.0001
4.593 5603.78 87.1 1.742 87.0 10.5 4.55 2.00%Sand-Slime Tailing 0.059 119.0 0.24 0.04 0.21 1 1.70 147.593 ###### 171.55 421 2.01% 1.7 47% 1.06 0.00 1.06 0 0.98 0.19 0.96 1.0 0.055 90.47 262.02 1.000 18.32 0.95 0.76 0.62 1.72 1.0 0.024 1.07 182.82 1.000 99.36 58.84 2 6.11 495 1.8E-03 4.5E+02 2.3E-04 10 0.206 7885 0.04% 2.00 0.65 0.03% 0.006 0.34 0.079 0.765 0.91% 0.0015
4.757 5603.61 81.0 1.555 81.0 10.4 4.50 1.92%Sand-Slime Tailing 0.059 119.0 0.25 0.04 0.21 1 1.70 137.632 ###### 159.98 383 1.93% 1.7 47% 1.07 0.00 1.07 0 0.98 0.17 0.96 1.0 0.055 86.41 246.39 1.000 18.29 0.95 0.73 0.63 1.67 1.0 0.025 1.07 171.03 1.000 97.21 57.75 2 6.16 495 1.8E-03 4.5E+02 2.3E-04 10 0.207 7855 0.04% 2.00 0.65 0.03% 0.006 0.34 0.079 0.765 0.94% 0.0015
4.921 5603.45 82.4 1.088 82.4 10.5 4.56 1.32%Sand Tailings 0.062 123.5 0.26 0.05 0.22 1 1.70 139.914 ###### 162.63 381 1.32% 1.6 18% 1.08 0.00 1.08 0 0.98 0.18 0.96 1.0 0.054 63.67 226.30 1.000 18.36 0.95 0.74 0.63 1.66 1.0 0.025 1.00 162.63 1.000 94.99 56.67 2 6.21 495 1.9E-03 4.7E+02 2.3E-04 0 0.210 9871 0.05% 2.20 1.00 0.03% 0.001 0.34 0.079 0.765 0.08% 0.0001
5.085 5603.28 81.0 1.231 80.9 13.0 5.62 1.52%Sand Tailings 0.062 123.5 0.27 0.05 0.22 1 1.70 137.217 ###### 159.53 366 1.52% 1.7 18% 1.09 0.00 1.09 0 0.98 0.17 0.96 1.0 0.054 62.87 222.40 1.000 18.38 0.95 0.73 0.64 1.64 1.0 0.026 1.02 162.38 1.000 92.87 55.63 2 6.26 495 1.9E-03 4.7E+02 2.3E-04 0 0.210 9833 0.06% 2.20 1.00 0.03% 0.001 0.34 0.079 0.765 0.09% 0.0001
5.249 5603.12 70.7 1.164 70.7 9.2 3.98 1.65%Sand Tailings 0.062 123.5 0.28 0.06 0.23 1 1.70 120.105 ###### 139.61 312 1.65% 1.7 18% 1.10 0.00 1.10 0 0.98 0.15 0.96 1.0 0.055 57.78 197.39 1.000 18.30 0.95 0.68 0.66 1.58 1.0 0.027 1.06 148.48 0.384 34.93 26.61 2 6.31 495 1.9E-03 4.7E+02 2.3E-04 0 0.211 9796 0.06% 2.20 1.00 0.03% 0.001 0.34 0.079 0.765 0.09% 0.0001
5.413 5602.96 85.1 0.966 85.1 8.1 3.51 1.14%Sand Tailings 0.062 123.5 0.29 0.06 0.23 1 1.65 140.603 ###### 163.40 367 1.14% 1.6 18% 1.11 0.00 1.11 0 0.98 0.18 0.95 1.0 0.054 63.86 227.26 1.000 18.51 0.95 0.74 0.63 1.63 1.0 0.026 1.00 163.40 1.000 88.91 53.71 2 6.36 495 1.9E-03 4.7E+02 2.3E-04 0 0.211 9760 0.06% 2.20 1.00 0.03% 0.001 0.34 0.079 0.765 0.09% 0.0002
5.577 5602.79 64.0 0.689 64.0 6.3 2.74 1.08%Sand Tailings 0.062 123.5 0.30 0.07 0.24 1 1.70 108.817 ###### 126.46 270 1.08% 1.6 18% 1.12 0.00 1.12 0 0.98 0.13 0.96 1.0 0.055 54.42 180.88 0.550 10.08 0.95 0.65 0.68 1.52 1.0 0.028 1.00 126.46 0.268 23.34 16.71 2 6.41 495 1.9E-03 4.7E+02 2.3E-04 0 0.212 9724 0.06% 2.20 1.00 0.03% 0.001 0.34 0.079 0.765 0.10% 0.0002
5.741 5602.63 47.9 0.475 47.9 3.6 1.57 0.99%Sand Tailings 0.062 123.5 0.31 0.07 0.24 1 1.70 81.396 ###### 94.58 198 1.00% 1.7 18% 1.14 0.00 1.14 0 0.98 0.10 0.97 1.0 0.055 46.27 140.85 0.235 4.28 0.95 0.56 0.72 1.43 1.0 0.029 1.03 97.70 0.167 14.22 9.25 2 6.46 495 1.9E-03 4.7E+02 2.4E-04 0 0.212 9688 0.06% 2.20 1.00 0.03% 0.001 0.34 0.079 0.765 0.10% 0.0002
5.905 5602.46 40.9 0.332 40.9 2.7 1.18 0.81%Sand Tailings 0.062 123.5 0.32 0.08 0.25 1 1.70 69.462 965.52 80.71 165 0.82% 1.7 18% 1.15 0.00 1.15 0 0.98 0.09 0.97 1.0 0.055 42.72 123.43 0.187 3.40 0.95 0.52 0.74 1.38 1.0 0.030 1.03 83.17 0.134 11.16 7.28 2 6.51 495 1.9E-03 4.7E+02 2.4E-04 0 0.213 9653 0.06% 2.20 1.00 0.03% 0.001 0.34 0.079 0.765 0.10% 0.0002
6.069 5602.30 39.0 0.287 39.0 2.6 1.11 0.74%Sand Tailings 0.062 123.5 0.33 0.08 0.25 1 1.70 66.317 921.81 77.05 154 0.74% 1.7 18% 1.16 0.00 1.16 0 0.98 0.09 0.97 1.0 0.055 41.79 118.84 0.177 3.22 0.95 0.51 0.75 1.37 1.0 0.031 1.03 79.07 0.126 10.32 6.77 2 6.56 495 1.9E-03 4.7E+02 2.4E-04 0 0.213 9618 0.06% 2.20 1.00 0.03% 0.001 0.34 0.079 0.765 0.11% 0.0002
6.234 5602.14 40.0 0.341 40.0 2.0 0.85 0.85%Sand Tailings 0.062 123.5 0.34 0.09 0.26 1 1.70 67.932 944.25 78.92 155 0.86% 1.7 18% 1.17 0.00 1.17 0 0.98 0.09 0.97 1.0 0.055 42.27 121.19 0.182 3.32 0.95 0.51 0.74 1.36 1.0 0.031 1.05 83.18 0.134 10.73 7.03 2 6.61 495 1.9E-03 4.7E+02 2.4E-04 0 0.213 9583 0.06% 2.20 1.00 0.03% 0.001 0.34 0.079 0.765 0.11% 0.0002
6.398 5601.97 40.0 0.355 40.0 2.8 1.20 0.89%Sand Tailings 0.062 123.5 0.35 0.09 0.26 1 1.70 67.915 944.02 78.91 152 0.90% 1.7 18% 1.18 0.00 1.18 0 0.97 0.09 0.97 1.0 0.055 42.26 121.18 0.182 3.33 0.95 0.51 0.74 1.36 1.0 0.031 1.07 84.14 0.135 10.68 7.00 2 6.66 495 1.9E-03 4.7E+02 2.4E-04 0 0.214 9550 0.06% 2.20 1.00 0.03% 0.001 0.34 0.079 0.765 0.12% 0.0002
6.562 5601.81 40.0 0.387 40.0 3.0 1.30 0.97%Sand Tailings 0.062 123.5 0.36 0.10 0.27 1 1.70 67.915 944.02 78.92 149 0.98% 1.8 18% 1.19 0.00 1.19 0 0.97 0.09 0.97 1.0 0.055 42.26 121.18 0.182 3.33 0.95 0.51 0.74 1.35 1.0 0.031 1.09 85.86 0.139 10.75 7.04 2 6.71 495 1.9E-03 4.7E+02 2.5E-04 0 0.214 9516 0.07% 2.20 1.00 0.03% 0.001 0.34 0.079 0.765 0.12% 0.0002
6.726 5601.64 43.0 0.411 42.9 3.4 1.47 0.96%Sand Tailings 0.062 123.5 0.37 0.10 0.27 1 1.70 72.998 ###### 84.82 157 0.97% 1.8 18% 1.20 0.00 1.20 0 0.97 0.09 0.97 1.0 0.054 43.77 128.60 0.199 3.66 0.95 0.53 0.73 1.36 1.0 0.031 1.07 91.07 0.150 11.42 7.54 2 6.76 495 1.9E-03 4.7E+02 2.5E-04 0 0.215 9483 0.07% 2.20 1.00 0.03% 0.001 0.34 0.079 0.765 0.12% 0.0002
6.890 5601.48 43.2 0.434 43.2 4.0 1.72 1.00%Sand Tailings 0.062 123.5 0.38 0.11 0.28 1 1.70 73.406 ###### 85.31 155 1.01% 1.8 18% 1.21 0.00 1.21 0 0.97 0.09 0.97 1.0 0.054 43.90 129.20 0.201 3.70 0.95 0.53 0.73 1.35 1.0 0.031 1.09 92.69 0.154 11.50 7.60 2 6.81 495 1.9E-03 4.7E+02 2.5E-04 0 0.215 9450 0.07% 2.20 1.00 0.03% 0.001 0.34 0.079 0.765 0.13% 0.0002
7.054 5601.32 39.0 0.417 39.0 3.6 1.56 1.07%Sand-Slime Tailing 0.059 119.0 0.39 0.11 0.28 1 1.70 66.249 920.86 76.99 138 1.08% 1.8 47% 1.22 0.00 1.22 0 0.97 0.09 0.97 1.0 0.054 57.30 134.29 0.215 3.95 0.95 0.51 0.75 1.33 1.0 0.031 1.13 86.86 0.141 10.35 7.15 2 6.86 495 1.8E-03 4.5E+02 2.6E-04 10 0.214 7462 0.05% 2.00 0.65 0.03% 0.009 0.34 0.079 0.765 1.36% 0.0022
7.218 5601.15 35.2 0.330 35.2 3.4 1.46 0.94%Sand-Slime Tailing 0.059 119.0 0.40 0.12 0.29 1 1.70 59.840 831.78 69.54 122 0.95% 1.8 47% 1.23 0.00 1.23 0 0.97 0.08 0.97 1.0 0.054 54.69 124.23 0.189 3.47 0.95 0.48 0.76 1.30 1.0 0.032 1.13 78.48 0.125 9.03 6.25 2 6.91 495 1.8E-03 4.5E+02 2.6E-04 10 0.214 7438 0.05% 2.00 0.65 0.03% 0.009 0.34 0.079 0.765 1.39% 0.0023
7.382 5600.99 32.9 0.239 32.9 3.5 1.53 0.73%Sand-Slime Tailing 0.059 119.0 0.41 0.12 0.29 1 1.70 55.845 776.25 64.90 112 0.74% 1.8 47% 1.24 0.00 1.24 0 0.97 0.08 0.97 1.0 0.054 53.06 117.97 0.175 3.23 0.95 0.47 0.77 1.29 1.0 0.032 1.10 71.31 0.114 8.09 5.66 2 6.96 495 1.8E-03 4.5E+02 2.7E-04 10 0.214 7413 0.06% 2.00 0.65 0.03% 0.009 0.34 0.079 0.765 1.42% 0.0023
7.546 5600.82 30.1 0.219 30.0 3.5 1.51 0.73%Sand-Slime Tailing 0.059 119.0 0.42 0.13 0.29 1 1.70 51.051 709.61 59.34 101 0.74% 1.8 47% 1.24 0.00 1.24 0 0.97 0.08 0.97 1.0 0.054 51.11 110.45 0.161 2.96 0.95 0.44 0.78 1.27 1.0 0.033 1.13 66.87 0.108 7.55 5.26 2 7.01 495 1.8E-03 4.5E+02 2.7E-04 10 0.215 7389 0.06% 2.00 0.65 0.03% 0.009 0.34 0.079 0.765 1.45% 0.0024
7.710 5600.66 27.5 0.248 27.5 4.2 1.82 0.90%Sand-Slime Tailing 0.059 119.0 0.43 0.13 0.30 1 1.70 46.716 649.35 54.31 91 0.92% 1.9 47% 1.25 0.00 1.25 0 0.97 0.07 0.97 1.0 0.054 49.35 103.66 0.149 2.74 0.95 0.43 0.79 1.25 1.0 0.033 1.21 65.63 0.106 7.33 5.04 2 7.06 495 1.8E-03 4.5E+02 2.7E-04 10 0.215 7365 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.48% 0.0024
7.874 5600.50 19.6 0.239 19.6 6.2 2.68 1.22%Sand-Slime Tailing 0.059 119.0 0.44 0.14 0.30 1 1.70 33.269 462.44 38.72 63 1.25% 2.1 47% 1.26 0.00 1.26 0 0.96 0.06 0.98 1.0 0.054 43.88 82.60 0.116 2.14 0.95 0.36 0.80 1.23 1.0 0.034 1.50 58.23 0.098 6.69 4.41 2 7.11 495 1.8E-03 4.5E+02 2.7E-04 10 0.216 7342 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.50% 0.0025
8.038 5600.33 18.1 0.197 18.0 10.3 4.48 1.09%Sand-Slime Tailing 0.059 119.0 0.45 0.14 0.31 1 1.70 30.651 426.05 35.73 57 1.12% 2.1 47% 1.27 0.00 1.27 0 0.96 0.06 0.98 1.0 0.054 42.83 78.56 0.111 2.04 0.95 0.35 0.80 1.23 1.0 0.034 1.51 54.07 0.095 6.34 4.19 2 7.16 495 1.8E-03 4.5E+02 2.7E-04 10 0.216 7318 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.53% 0.0025
8.202 5600.17 23.6 0.205 23.5 21.5 9.32 0.87%Sand-Slime Tailing 0.059 119.0 0.46 0.15 0.31 1 1.70 39.865 554.12 46.57 74 0.89% 2.0 47% 1.28 0.00 1.28 0 0.96 0.07 0.97 1.0 0.054 46.63 93.20 0.132 2.43 0.94 0.39 0.80 1.22 1.0 0.034 1.28 59.48 0.100 6.57 4.50 2 7.21 495 1.8E-03 4.5E+02 2.8E-04 10 0.217 7295 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.56% 0.0026
8.366 5600.00 25.6 0.288 25.5 14.2 6.17 1.13%Sand-Slime Tailing 0.059 119.0 0.47 0.15 0.32 1 1.70 43.316 602.09 50.48 79 1.15% 2.0 47% 1.29 0.00 1.29 0 0.96 0.07 0.97 1.0 0.054 48.01 98.49 0.140 2.59 0.94 0.41 0.79 1.23 1.0 0.034 1.34 67.52 0.109 7.07 4.83 2 7.26 495 1.8E-03 4.5E+02 2.8E-04 10 0.217 7272 0.06% 2.00 0.65 0.03% 0.010 0.34 0.079 0.765 1.59% 0.0026
8.530 5599.84 29.3 0.323 29.2 8.4 3.65 1.10%Sand-Slime Tailing 0.059 119.0 0.48 0.16 0.32 1 1.70 49.708 690.94 57.84 89 1.12% 2.0 47% 1.30 0.00 1.30 0 0.96 0.08 0.97 1.0 0.054 50.59 108.42 0.157 2.92 0.94 0.44 0.78 1.24 1.0 0.034 1.27 73.69 0.117 7.52 5.22 2 7.31 495 1.8E-03 4.5E+02 2.8E-04 10 0.217 7250 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.62% 0.0027
8.694 5599.68 30.7 0.209 30.7 6.5 2.83 0.68%Sand-Slime Tailing 0.059 119.0 0.49 0.16 0.33 1 1.70 52.173 725.20 60.68 92 0.69% 1.8 47% 1.31 0.00 1.31 0 0.96 0.08 0.97 1.0 0.054 51.58 112.26 0.164 3.06 0.94 0.45 0.78 1.24 1.0 0.033 1.14 68.98 0.111 6.99 5.03 2 7.36 495 1.8E-03 4.5E+02 2.8E-04 10 0.218 7227 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.65% 0.0027
8.858 5599.51 33.0 0.238 32.9 7.2 3.11 0.72%Sand-Slime Tailing 0.059 119.0 0.50 0.17 0.33 1 1.70 55.964 777.90 65.09 98 0.73% 1.8 47% 1.32 0.00 1.32 0 0.96 0.08 0.97 1.0 0.053 53.13 118.22 0.176 3.29 0.94 0.47 0.77 1.25 1.0 0.033 1.13 73.73 0.117 7.32 5.30 2 7.41 495 1.8E-03 4.5E+02 2.8E-04 10 0.218 7205 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.68% 0.0027
9.022 5599.35 32.8 0.289 32.7 11.2 4.85 0.88%Sand-Slime Tailing 0.059 119.0 0.51 0.17 0.34 1 1.70 55.573 772.46 64.68 96 0.90% 1.9 47% 1.33 0.00 1.33 0 0.96 0.08 0.96 1.0 0.053 52.99 117.67 0.175 3.27 0.94 0.46 0.77 1.24 1.0 0.033 1.18 76.56 0.122 7.50 5.38 2 7.46 495 1.8E-03 4.5E+02 2.9E-04 10 0.219 7183 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.70% 0.0028
9.186 5599.18 31.3 0.342 31.3 6.6 2.86 1.09%Sand-Slime Tailing 0.059 119.0 0.52 0.18 0.34 1 1.70 53.193 739.38 61.86 90 1.11% 2.0 47% 1.34 0.00 1.34 0 0.96 0.08 0.97 1.0 0.053 52.00 113.86 0.167 3.13 0.94 0.45 0.77 1.23 1.0 0.034 1.27 78.34 0.125 7.58 5.36 2 7.51 495 1.8E-03 4.5E+02 2.9E-04 10 0.219 7162 0.06% 2.00 0.65 0.03% 0.011 0.34 0.079 0.765 1.73% 0.0028
9.350 5599.02 29.8 0.381 29.8 8.8 3.81 1.28%Sand-Slime Tailing 0.059 119.0 0.53 0.18 0.35 1 1.70 50.575 702.99 58.85 85 1.30% 2.0 47% 1.35 0.00 1.35 0 0.96 0.08 0.97 1.0 0.053 50.94 109.79 0.159 2.99 0.94 0.44 0.78 1.22 1.0 0.034 1.35 79.72 0.127 7.63 5.31 2 7.56 460 1.8E-03 3.9E+02 3.4E-04 10 0.219 7140 0.10% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.60% 0.0043
9.514 5598.86 25.7 0.381 25.6 10.2 4.40 1.48%Sand-Slime Tailing 0.059 119.0 0.54 0.19 0.35 1 1.70 43.537 605.16 50.69 72 1.52% 2.1 47% 1.36 0.00 1.36 0 0.95 0.07 0.97 1.0 0.053 48.08 98.77 0.141 2.63 0.94 0.41 0.79 1.20 1.0 0.035 1.53 77.35 0.123 7.29 4.96 2 7.61 460 1.8E-03 3.9E+02 3.4E-04 10 0.220 7119 0.10% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.63% 0.0043
9.678 5598.69 21.5 0.318 21.5 11.1 4.80 1.48%Sand-Slime Tailing 0.059 119.0 0.55 0.19 0.35 1 1.70 36.482 507.10 42.51 59 1.52% 2.2 47% 1.37 0.00 1.37 0 0.95 0.07 0.97 1.0 0.053 45.21 87.72 0.124 2.31 0.94 0.38 0.80 1.19 1.0 0.035 1.67 70.98 0.113 6.62 4.47 2 7.66 460 1.8E-03 3.9E+02 3.4E-04 10 0.220 7098 0.10% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.67% 0.0044
9.842 5598.53 16.4 0.157 16.3 10.5 4.54 0.96%Sand-Slime Tailing 0.059 119.0 0.56 0.20 0.36 1 1.70 27.693 384.93 32.29 44 0.99% 2.2 47% 1.38 0.00 1.38 0 0.95 0.06 0.97 1.0 0.053 41.63 73.92 0.105 1.96 0.94 0.33 0.80 1.19 1.0 0.035 1.66 53.47 0.094 5.44 3.70 2 7.71 460 1.8E-03 3.9E+02 3.4E-04 10 0.221 7077 0.10% 2.00 0.65 0.03% 0.018 0.34 0.079 0.765 2.71% 0.0044
10.006 5598.36 14.2 0.105 14.1 11.9 5.14 0.74%Sand-Slime Tailing 0.059 119.0 0.57 0.20 0.36 1 1.70 24.004 333.66 28.03 37 0.77% 2.2 47% 1.39 0.00 1.39 0 0.95 0.06 0.97 1.0 0.053 40.13 68.16 0.097 1.82 0.94 0.31 0.80 1.19 1.0 0.035 1.66 46.45 0.089 5.06 3.44 2 7.76 460 1.8E-03 3.9E+02 3.5E-04 10 0.221 7056 0.10% 2.00 0.65 0.03% 0.018 0.34 0.079 0.765 2.75% 0.0045
10.170 5598.20 15.4 0.103 15.4 7.0 3.05 0.67%Sand-Slime Tailing 0.059 119.0 0.58 0.21 0.37 1 1.70 26.180 363.90 30.49 40 0.69% 2.1 47% 1.40 0.00 1.40 0 0.95 0.06 0.97 1.0 0.053 41.00 71.49 0.101 1.90 0.94 0.32 0.80 1.18 1.0 0.035 1.54 47.04 0.089 5.02 3.46 2 7.81 460 1.8E-03 3.9E+02 3.5E-04 10 0.221 7036 0.10% 2.00 0.65 0.03% 0.018 0.34 0.079 0.765 2.79% 0.0046
10.335 5598.04 16.1 0.128 16.1 4.8 2.09 0.79%Sand-Slime Tailing 0.059 119.0 0.59 0.21 0.37 1 1.70 27.370 380.44 31.85 42 0.82% 2.2 47% 1.41 0.00 1.41 0 0.95 0.06 0.97 1.0 0.053 41.47 73.32 0.104 1.95 0.94 0.33 0.80 1.18 1.0 0.035 1.60 50.94 0.092 5.14 3.54 2 7.86 460 1.8E-03 3.9E+02 3.5E-04 10 0.222 7016 0.10% 2.00 0.65 0.03% 0.018 0.34 0.079 0.765 2.83% 0.0046
10.499 5597.87 14.5 0.162 14.4 6.6 2.86 1.12%Sand-Slime Tailing 0.059 119.0 0.60 0.22 0.38 1 1.70 24.548 341.22 28.59 37 1.17% 2.3 47% 1.42 0.00 1.42 0 0.95 0.06 0.97 1.0 0.053 40.33 68.92 0.098 1.85 0.94 0.31 0.80 1.18 1.0 0.035 1.95 55.63 0.096 5.28 3.56 2 7.91 460 1.8E-03 3.9E+02 3.5E-04 10 0.222 6996 0.11% 2.00 0.65 0.03% 0.019 0.34 0.079 0.765 2.87% 0.0047
10.663 5597.71 14.4 0.178 14.4 8.8 3.80 1.23%Sand-Slime Tailing 0.059 119.0 0.61 0.22 0.38 1 1.70 24.446 339.80 28.50 36 1.29% 2.3 47% 1.43 0.00 1.43 0 0.95 0.06 0.97 1.0 0.053 40.30 68.80 0.098 1.85 0.94 0.31 0.80 1.18 1.0 0.035 2.05 58.29 0.098 5.35 3.60 2 7.96 460 1.8E-03 3.9E+02 3.6E-04 10 0.223 6976 0.11% 2.00 0.65 0.03% 0.019 0.34 0.079 0.765 2.91% 0.0048
10.827 5597.54 16.9 0.242 16.8 10.1 4.39 1.44%Sand-Slime Tailing 0.059 119.0 0.62 0.23 0.39 1 1.70 28.560 396.98 33.30 42 1.49% 2.3 47% 1.44 0.00 1.44 0 0.95 0.06 0.97 1.0 0.053 41.98 75.27 0.106 2.01 0.94 0.33 0.80 1.17 1.0 0.035 1.99 66.37 0.107 5.76 3.88 2 8.01 460 1.8E-03 3.9E+02 3.6E-04 10 0.223 6956 0.11% 2.00 0.65 0.03% 0.019 0.34 0.079 0.765 2.95% 0.0048
10.991 5597.38 15.0 0.248 14.9 10.7 4.62 1.66%Sand-Slime Tailing 0.059 119.0 0.63 0.23 0.39 1 1.70 25.313 351.85 29.53 37 1.73% 2.4 47% 1.45 0.00 1.45 0 0.94 0.06 0.97 1.0 0.053 40.66 70.19 0.100 1.89 0.94 0.31 0.80 1.17 1.0 0.035 2.31 68.36 0.110 5.83 3.86 2 8.06 460 1.8E-03 3.9E+02 3.6E-04 10 0.223 6937 0.11% 2.00 0.65 0.03% 0.020 0.34 0.079 0.765 2.98% 0.0049
11.155 5597.22 12.9 0.198 12.8 12.5 5.43 1.54%Sand-Slime Tailing 0.059 119.0 0.64 0.24 0.40 1 1.70 21.726 301.99 25.39 31 1.62% 2.4 47% 1.46 0.00 1.46 0 0.94 0.06 0.97 1.0 0.053 39.21 64.59 0.093 1.76 0.94 0.29 0.80 1.17 1.0 0.035 2.50 63.39 0.104 5.44 3.60 2 8.11 460 1.8E-03 3.9E+02 3.6E-04 10 0.224 6918 0.11% 2.00 0.65 0.03% 0.020 0.34 0.079 0.765 3.02% 0.0050
11.319 5597.05 11.6 0.168 11.5 17.1 7.40 1.45%Sand-Slime Tailing 0.059 119.0 0.65 0.24 0.40 1 1.70 19.567 271.98 22.94 27 1.53% 2.5 47% 1.47 0.00 1.47 0 0.94 0.05 0.97 1.0 0.053 38.35 61.28 0.089 1.69 0.94 0.28 0.80 1.16 1.0 0.035 2.63 60.28 0.100 5.21 3.45 2 8.16 460 1.8E-03 3.9E+02 3.7E-04 10 0.224 6898 0.11% 2.00 0.65 0.03% 0.020 0.34 0.079 0.765 3.06% 0.0050
11.483 5596.89 11.7 0.133 11.5 23.8 10.31 1.14%Sand-Slime Tailing 0.059 119.0 0.66 0.25 0.41 1 1.70 19.567 271.98 23.02 27 1.21% 2.4 47% 1.48 0.00 1.48 0 0.94 0.05 0.97 1.0 0.053 38.37 61.39 0.089 1.69 0.94 0.28 0.80 1.16 1.0 0.036 2.39 54.92 0.095 4.90 3.30 2 8.21 460 1.8E-03 3.9E+02 3.7E-04 10 0.224 6880 0.12% 2.00 0.65 0.03% 0.020 0.34 0.079 0.765 3.10% 0.0051
11.647 5596.72 12.6 0.172 12.4 30.6 13.24 1.37%Sand-Slime Tailing 0.059 119.0 0.67 0.26 0.41 1 1.70 21.080 293.01 24.86 29 1.44% 2.4 47% 1.49 0.00 1.49 0 0.94 0.06 0.97 1.0 0.053 39.02 63.88 0.092 1.75 0.94 0.29 0.80 1.16 1.0 0.036 2.46 61.18 0.101 5.14 3.45 2 8.26 460 1.8E-03 3.9E+02 3.7E-04 10 0.225 6861 0.12% 2.00 0.65 0.03% 0.021 0.34 0.079 0.765 3.14% 0.0052
11.811 5596.56 15.5 0.198 15.4 20.6 8.94 1.28%Sand-Slime Tailing 0.059 119.0 0.68 0.26 0.42 1 1.70 26.110 362.93 30.58 36 1.33% 2.3 47% 1.50 0.00 1.50 0 0.94 0.06 0.97 1.0 0.052 41.03 71.60 0.102 1.94 0.94 0.32 0.80 1.16 1.0 0.036 2.09 63.85 0.104 5.23 3.59 2 8.31 460 1.8E-03 3.9E+02 3.7E-04 10 0.225 6842 0.12% 2.00 0.65 0.03% 0.021 0.34 0.079 0.765 3.19% 0.0052
11.975 5596.40 18.6 0.272 18.5 20.1 8.70 1.46%Sand-Slime Tailing 0.059 119.0 0.69 0.27 0.42 1 1.65 30.471 423.55 35.63 43 1.52% 2.3 47% 1.51 0.00 1.51 0 0.94 0.06 0.97 1.0 0.052 42.80 78.43 0.111 2.11 0.94 0.34 0.80 1.15 1.0 0.036 1.99 71.01 0.113 5.63 3.87 2 8.36 460 1.8E-03 3.9E+02 3.8E-04 10 0.226 6824 0.12% 2.00 0.65 0.03% 0.021 0.34 0.079 0.765 3.23% 0.0053
12.139 5596.23 20.8 0.332 20.7 20.6 8.93 1.59%Sand-Slime Tailing 0.059 119.0 0.69 0.27 0.42 1 1.62 33.523 465.97 39.18 47 1.65% 2.3 47% 1.52 0.00 1.52 0 0.94 0.06 0.96 1.0 0.052 44.04 83.22 0.117 2.25 0.94 0.36 0.80 1.15 1.0 0.036 1.95 76.21 0.121 5.96 4.10 2 8.41 460 1.8E-03 3.9E+02 3.8E-04 10 0.226 6806 0.12% 2.00 0.65 0.03% 0.021 0.34 0.079 0.765 3.27% 0.0054
12.303 5596.07 20.6 0.354 20.4 21.5 9.33 1.72%Sand-Slime Tailing 0.059 119.0 0.70 0.28 0.43 1 1.61 32.926 457.68 38.49 46 1.78% 2.3 47% 1.53 0.00 1.53 0 0.94 0.06 0.96 1.0 0.052 43.80 82.30 0.116 2.22 0.94 0.36 0.80 1.15 1.0 0.036 2.04 78.62 0.125 6.09 4.16 2 8.46 460 1.8E-03 3.9E+02 3.8E-04 10 0.226 6788 0.12% 2.00 0.65 0.03% 0.022 0.34 0.079 0.765 3.31% 0.0054
12.467 5595.90 21.7 0.293 21.6 21.5 9.33 1.35%Sand-Slime Tailing 0.059 119.0 0.71 0.28 0.43 1 1.59 34.352 477.50 40.15 48 1.40% 2.2 47% 1.54 0.00 1.54 0 0.93 0.07 0.96 1.0 0.052 44.38 84.53 0.119 2.29 0.93 0.37 0.80 1.15 1.0 0.036 1.79 71.84 0.114 5.51 3.90 2 8.51 460 1.8E-03 3.9E+02 3.8E-04 10 0.227 6770 0.13% 2.00 0.65 0.03% 0.022 0.34 0.079 0.765 3.35% 0.0055
12.631 5595.74 19.6 0.242 19.4 23.8 10.31 1.24%Sand-Slime Tailing 0.059 119.0 0.72 0.29 0.44 1 1.60 31.035 431.38 36.32 43 1.28% 2.3 47% 1.55 0.00 1.55 0 0.93 0.06 0.96 1.0 0.052 43.04 79.36 0.112 2.15 0.93 0.35 0.80 1.14 1.0 0.036 1.85 67.11 0.108 5.15 3.65 2 8.56 460 1.8E-03 3.9E+02 3.9E-04 10 0.227 6752 0.13% 2.00 0.65 0.03% 0.022 0.34 0.079 0.765 3.39% 0.0056
12.795 5595.57 25.2 0.298 25.1 16.3 7.06 1.18%Sand-Slime Tailing 0.059 119.0 0.73 0.29 0.44 1 1.55 38.791 539.19 45.24 55 1.22% 2.2 47% 1.56 0.00 1.56 0 0.93 0.07 0.96 1.0 0.052 46.17 91.40 0.129 2.50 0.93 0.39 0.80 1.14 1.0 0.036 1.59 71.85 0.114 5.40 3.95 2 8.61 460 1.8E-03 3.9E+02 3.9E-04 10 0.227 6734 0.13% 2.00 0.65 0.03% 0.022 0.34 0.079 0.765 3.43% 0.0056
12.959 5595.41 21.9 0.407 21.8 10.3 4.45 1.86%Sand-Slime Tailing 0.059 119.0 0.74 0.30 0.45 1 1.56 34.046 473.24 39.66 47 1.93% 2.3 47% 1.57 0.00 1.57 0 0.93 0.06 0.96 1.0 0.052 44.21 83.87 0.118 2.28 0.93 0.36 0.80 1.14 1.0 0.036 2.09 83.02 0.133 6.22 4.25 2 8.66 460 1.8E-03 3.9E+02 3.9E-04 10 0.228 6717 0.13% 2.00 0.65 0.03% 0.023 0.34 0.079 0.765 3.47% 0.0057
13.123 5595.25 15.7 0.413 15.6 13.9 6.04 2.63%Slime Tailings 0.057 113.1 0.75 0.30 0.45 1 1.60 25.057 348.29 29.26 33 2.76% 2.6 71% 1.58 0.00 1.58 0 0.93 0.06 0.96 1.0 0.052 40.28 69.54 0.099 1.91 0.93 0.31 0.80 1.14 1.0 0.036 3.10 90.60 0.149 6.91 4.41 2 8.71 460 1.8E-03 3.7E+02 4.1E-04 16 0.479 5523 0.16% 2.00 0.65 0.03% 0.027 0.34 0.079 0.765 4.06% 0.0067
13.287 5595.08 12.5 0.244 12.3 29.1 12.59 1.95%Sand-Slime Tailing 0.059 119.0 0.76 0.31 0.46 1 1.62 20.028 278.39 23.60 26 2.08% 2.6 47% 1.59 0.00 1.58 1 0.93 0.05 0.97 1.0 0.052 38.58 62.18 0.090 1.74 0.93 0.28 0.80 1.14 1.0 0.036 3.15 74.30 0.118 5.40 3.57 2 8.76 460 1.8E-03 3.9E+02 4.0E-04 10 0.228 6692 0.14% 2.00 0.65 0.03% 0.023 0.34 0.079 0.765 3.56% 0.0058
13.451 5594.92 23.9 0.277 23.7 39.2 16.99 1.16%Sand-Slime Tailing 0.059 119.0 0.77 0.31 0.46 1 1.52 35.953 499.74 42.19 50 1.20% 2.2 47% 1.60 0.01 1.59 1 0.93 0.07 0.96 1.0 0.052 45.10 87.29 0.123 2.38 0.93 0.38 0.80 1.13 1.0 0.037 1.65 69.75 0.112 5.03 3.71 2 8.81 460 1.8E-03 3.9E+02 4.0E-04 10 0.228 6684 0.14% 2.00 0.65 0.03% 0.024 0.34 0.079 0.765 3.61% 0.0059
13.615 5594.75 17.1 0.257 16.9 21.6 9.34 1.51%Sand-Slime Tailing 0.059 119.0 0.78 0.32 0.47 1 1.56 26.372 366.57 30.87 35 1.58% 2.4 47% 1.61 0.02 1.59 1 0.93 0.06 0.96 1.0 0.052 41.13 72.00 0.102 1.96 0.93 0.32 0.80 1.13 1.0 0.037 2.28 70.46 0.113 5.01 3.49 2 8.86 460 1.8E-03 3.9E+02 4.0E-04 10 0.229 6676 0.14% 2.00 0.65 0.03% 0.024 0.34 0.079 0.765 3.66% 0.0060
13.779 5594.59 13.5 0.216 13.4 24.5 10.62 1.60%Sand-Slime Tailing 0.059 119.0 0.79 0.32 0.47 1 1.58 21.097 293.25 24.78 27 1.70% 2.5 47% 1.62 0.02 1.60 1 0.92 0.06 0.97 1.0 0.052 38.99 63.78 0.092 1.76 0.93 0.29 0.80 1.13 1.0 0.037 2.78 68.81 0.110 4.85 3.31 2 8.91 460 1.8E-03 3.9E+02 4.0E-04 10 0.229 6668 0.14% 2.00 0.65 0.03% 0.024 0.34 0.079 0.765 3.71% 0.0061
13.943 5594.43 12.3 0.109 12.1 31.7 13.73 0.89%Sand-Slime Tailing 0.059 119.0 0.80 0.33 0.47 1 1.58 19.096 265.43 22.54 24 0.95% 2.4 47% 1.63 0.03 1.60 1 0.92 0.05 0.97 1.0 0.052 38.21 60.75 0.089 1.69 0.93 0.27 0.80 1.13 1.0 0.037 2.34 52.74 0.094 4.07 2.88 2 8.96 460 1.8E-03 3.9E+02 4.1E-04 10 0.229 6660 0.15% 2.00 0.65 0.03% 0.025 0.34 0.079 0.765 3.76% 0.0062
14.107 5594.26 13.7 0.109 13.5 35.9 15.56 0.80%Sand-Slime Tailing 0.059 119.0 0.81 0.33 0.48 1 1.56 20.976 291.56 24.77 27 0.85% 2.3 47% 1.63 0.03 1.60 1 0.92 0.06 0.97 1.0 0.052 38.99 63.76 0.092 1.76 0.93 0.29 0.80 1.12 1.0 0.037 2.09 51.73 0.093 3.99 2.87 2 9.01 460 1.8E-03 3.9E+02 4.1E-04 10 0.229 6652 0.15% 2.00 0.65 0.03% 0.025 0.34 0.079 0.765 3.81% 0.0063
14.271 5594.10 14.3 0.105 14.1 40.0 17.33 0.73%Sand-Slime Tailing 0.059 119.0 0.82 0.34 0.48 1 1.54 21.657 301.03 25.60 28 0.78% 2.3 47% 1.64 0.04 1.61 1 0.92 0.06 0.96 1.0 0.052 39.28 64.88 0.093 1.78 0.93 0.29 0.80 1.12 1.0 0.037 1.98 50.75 0.092 3.91 2.84 2 9.06 460 1.8E-03 3.9E+02 4.1E-04 10 0.229 6644 0.15% 2.00 0.65 0.03% 0.025 0.34 0.079 0.765 3.87% 0.0063
14.436 5593.93 15.6 0.141 15.4 38.1 16.50 0.90%Sand-Slime Tailing 0.059 119.0 0.83 0.34 0.49 1 1.52 23.383 325.02 27.58 30 0.95% 2.3 47% 1.65 0.04 1.61 1 0.92 0.06 0.96 1.0 0.053 39.97 67.55 0.097 1.84 0.93 0.30 0.80 1.12 1.0 0.038 2.02 55.83 0.096 4.03 2.93 2 9.11 460 1.8E-03 3.9E+02 4.1E-04 10 0.229 6636 0.15% 2.00 0.65 0.03% 0.026 0.34 0.079 0.765 3.92% 0.0064
14.600 5593.77 13.6 0.133 13.4 36.6 15.87 0.98%Sand-Slime Tailing 0.059 119.0 0.84 0.35 0.49 1 1.53 20.462 284.42 24.17 26 1.04% 2.4 47% 1.66 0.05 1.62 1 0.92 0.06 0.97 1.0 0.053 38.78 62.95 0.091 1.73 0.93 0.28 0.80 1.12 1.0 0.038 2.31 55.88 0.096 3.98 2.86 2 9.16 500 1.8E-03 4.6E+02 3.5E-04 10 0.230 6628 0.10% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.62% 0.0043
14.764 5593.61 12.7 0.142 12.5 36.6 15.85 1.11%Sand-Slime Tailing 0.059 119.0 0.85 0.35 0.50 1 1.52 19.076 265.16 22.56 24 1.19% 2.5 47% 1.67 0.05 1.62 1 0.92 0.05 0.97 1.0 0.053 38.21 60.77 0.089 1.68 0.93 0.27 0.80 1.12 1.0 0.038 2.58 58.26 0.098 4.03 2.85 2 9.21 500 1.8E-03 4.6E+02 3.5E-04 10 0.230 6620 0.10% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.65% 0.0043
14.928 5593.44 11.6 0.159 11.4 38.9 16.85 1.37%Sand-Slime Tailing 0.059 119.0 0.86 0.36 0.50 1 1.52 17.298 240.44 20.52 21 1.48% 2.6 47% 1.68 0.06 1.63 1 0.92 0.05 0.97 1.0 0.053 37.50 58.02 0.086 1.62 0.93 0.26 0.80 1.11 1.0 0.038 3.05 62.52 0.103 4.16 2.89 2 9.26 500 1.8E-03 4.6E+02 3.6E-04 10 0.230 6612 0.10% 2.00 0.65 0.03% 0.018 0.34 0.079 0.765 2.69% 0.0044
15.092 5593.28 12.1 0.159 11.8 38.7 16.79 1.32%Sand-Slime Tailing 0.059 119.0 0.87 0.36 0.51 1 1.51 17.844 248.04 21.15 22 1.42% 2.5 47% 1.69 0.06 1.63 1 0.91 0.05 0.97 1.0 0.053 37.72 58.87 0.087 1.63 0.93 0.27 0.80 1.11 1.0 0.038 2.93 62.03 0.102 4.10 2.87 2 9.31 500 1.8E-03 4.6E+02 3.6E-04 10 0.230 6604 0.10% 2.00 0.65 0.03% 0.018 0.34 0.079 0.765 2.72% 0.0045
15.256 5593.11 18.8 0.159 18.6 31.2 13.52 0.85%Sand-Slime Tailing 0.059 119.0 0.88 0.37 0.51 1 1.45 26.955 374.67 31.63 35 0.89% 2.3 47% 1.70 0.07 1.64 1 0.91 0.06 0.96 1.0 0.053 41.40 73.03 0.103 1.96 0.92 0.32 0.80 1.11 1.0 0.038 1.81 57.25 0.097 3.86 2.91 2 9.36 500 1.8E-03 4.6E+02 3.6E-04 10 0.230 6597 0.10% 2.00 0.65 0.03% 0.018 0.34 0.079 0.765 2.76% 0.0045
18.130 5590.24 Sand-Slime Tailing 0.059 119.0 1.87 0.11 1.76 1 10.23 500 1.8E-03 4.6E+02 4.0E-04 10 0.235 6397 0.13% 2.00 0.65 0.03% 0.022 0.34 0.079 0.765 3.35% 0.0964
Extra layer added to analyze seismic settlement of tailings below the bottom of CPT investigation.
P = γeff*(Geff
/Gmax)
(tsf)
Volumetric Strain for Design Event, εv (%)
Incrementa
l Consolidation (ft)
CN
Volumetric
Strain for
Design
Event, εv (%)
Incremental Consolidation (ft)
TOTAL SEISMIC SETTLEMENT (FT):
Midpoint Depth at t1, z1
Shear Wave Velocity, Vs
Soil Density, ρ (tcf)b
Threshhol
d Shear Strain, γtv
(%)
Volumetri
c Strain at
15 Cycles,
εc-15 (%)Rc
Plasticity Index, PI g1 g2
Shear Strain, γ (%)a
Effective Stress at Bottom of Layer
Effective Stress at Midpoint of Layer FINAL COVER
Erosion Protection Layer
Water Storage/Rooting Zone Layer
qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Equil Pore Pressure at Midpoint of Layer (tsf)
Max Shear
Strain
Modulus,
Gmax (tsf)
Unit Weight (tcf)
Unit Weight (pcf)
Total Stress at Bottom of Layer
Total Stress at Midpoint of Layer
Equil Pore Pressure at Bottom of Layer
Cyclic Resistance Ratio
FoS
Cyclic Stress Ratio
FoS
∆qc1n qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Threshhol
d Shear
Strain, γtv (%)
Volumetric Strain at 15 Cycles, εc-15 (%)RcCNg1g2
Shear
Strain, γ ab
Seismic Settlement Analysis - Stewart et al (2004)
Shear Wave Velocity, Vs
High Compaction Layer
Platform/Random Fill Layer
Pw (u2)Pw (u2)
2013 CPT Data from ConeTec CPT Data Interpretations
fs/qt
Material
Type (as determined by fines
Unit Weight Unit Weight
Total
Stress
at time of CPT
Depth
at time of CPT Elevation qt fs qc
Effective
Stress at
time of CPT
Saturated
at time of CPT
Type Index,
Ic FC
Youd, et al (2001)
Max. Horiz. Acceleration, Amax/g: 0.15
Earthquake Moment Magnitude, M:
Idriss and Boulanger (2008)
Max. Horiz. Acceleration, Amax/g:
Earthquake Moment Magnitude, M:
Magnitude Scaling Factor, MSF:
WHITE MESA TAILINGS REPOSITORY LIQUEFACTION AND SEISMIC SETTLEMENT ANALYSES - 3-8N Elev. at Top of Layer (ft)
Elev. At Midpoint of Layer (ft)
Elev. At Bottom of Layer
Thickness of Layer (ft)
5.5
Magnitude Scaling Factor, MSF:
Equil
Pore
Pressure at time of
Conditions at t1 Liquefaction Triggering AnalysesEquil
Pore Pressure at t1CN qc1 qc1 qc1N
Normalized
Cone
Penetration Resistance, Qt
Normalize
d Friction
Ratio, Fr (%)
Total Stress at t1 Liquefiable?1=Yes
2=No
Cyclic Stress RatioEffective Stress at t1
Saturated at t1
Idriss & Boulanger (2008)
CSR
M=7.5,
s'v=1atm
Kc
Scaling Factor for stress ration, rm
Volumetric Strain Ratio for Site-Specific Design Ear
Equiv. Number of Uniform Strain Cycles, N
Youd et al. (2001)
CSR
M=7.5,
s'v=1atm
Depth at t1, z1
Soil Density, ρ
Maximum Shear Strain
Modulus,
Gmax
P =
γeff*(Geff/Gmax)
Plastici
ty Index, PI
Liquef_SeismicSettle_30Aug2015.xls Page 28 of 29
Energy Fuels Resources (USA) Inc.White Mesa Mill
Seismic Settlement Analyses
Data File: 13-52106_SP3-8S-BSC-CPT 5603.50 Water surface elevation during CPT investigation (ft a5608.70 Ground Surface Elevation at time of CPT (ft amsl)
Location: White Mesa 2013 CPT Investigation 0.15 5600.42 Water surface elevation at t0 (ft amsl)5620.45 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl)
..\..\..\6.2.3 Field Data\2013 Field Investigation\Conetec Dat 5.5 5590.63 Water surface elevation at t1 (ft amsl) 0.50 Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after pla ###### 5620.2 5619.95 0.50 0.055 110 0.028 0.014 0.00 0.00 0.028 0.014 0.08 508 1.7E-03 4.4E+02 3.0E-06 11 0.068 46696 0.00% 1.20 0.80 0.04% 0.000 0.32 0.133 0.778 0.00% 0.0000
Tailings Sands 1.69 5585.63 Water surface elevation at t2 (ft amsl)3.50 Thickness of Water Storage/Rooting Zone (ft)###### 5618.2 5616.45 3.50 0.054 107 0.215 0.121 0.00 0.00 0.215 0.121 0.69 508 1.7E-03 4.3E+02 2.8E-05 11 0.118 18930 0.00% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
Tailings Sand-Slimes 3.50 Thickness of High Compaction Layer (ft)###### 5614.7 5612.95 3.50 0.060 120 0.424 0.320 0.00 0.00 0.424 0.320 1.75 508 1.9E-03 4.8E+02 6.5E-05 11 0.152 12657 0.01% 0.65 0.75 0.02% 0.000 0.34 0.079 0.765 0.00% 0.0000
Tailings Slimes 1.44 4.25 Thickness of Random/Platform Fill on on top of existing interim cover (ft) ###### 5610.83 5608.70 4.25 0.050 101 0.638 0.531 0.00 0.00 0.638 0.531 2.93 508 1.6E-03 4.0E+02 1.3E-04 11 0.173 10248 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
Interim Cover 0.47 1273.89 Additional Stress due to Final Cover Placement, ΔσFC (psf)
Cells Requiring User Input/Manipulation 2.21 2.21 7.51 5585.63 Elevation of bottom of tailings (liner) (ft amsl)
0.354
rd Cσ Kσ Ka rd Dr ffKσ Ka Avg
(ft) (ft amsl) TSF TSF TSF (ft) PSI (%) (tcf) (pcf) (tsf)(tsf)(tsf) 1=Yes TSF MPa % (tsf)(tsf)(tsf) 1=Yes FoS m
0=No 0=No (ft/sec) (tcf) tsf tsf (%)
0.164 5608.54 17.2 0.175 17.2 1.2 0.54 1.02%Interim Cover 0.050 100.7 0.01 0.00 0.01 0 1.70 29.240 406.44 33.98 2082 1.02% 1.2 51% 0.65 0.00 0.65 0 1.00 0.06 1.02 1.0 0.059 42.24 76.22 0.108 1.83 0.97 0.34 0.80 0.80 2.53 1.0 0.017 1.00 33.98 0.078 190.38 96.10 2 3.63 594 1.6E-03 5.5E+02 1.1E-04 11 0.181 9453 0.01%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
0.328 5608.37 63.5 0.285 63.5 10.1 4.36 0.45%Interim Cover 0.050 100.7 0.02 0.00 0.02 0 1.70 107.899 ###### 125.44 3844 0.45% 0.9 51% 0.65 0.00 0.65 0 1.00 0.13 1.04 1.0 0.060 74.34 199.78 1.000 16.70 0.97 0.65 0.68 0.68 3.59 1.0 0.012 1.00 125.44 0.264 320.55 168.62 2 3.68 594 1.6E-03 5.5E+02 1.2E-04 11 0.182 9404 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
0.492 5608.21 90.9 0.503 90.8 10.4 4.50 0.55%Interim Cover 0.050 100.7 0.02 0.00 0.02 0 1.70 154.394 ###### 179.45 3666 0.55% 1.0 51% 0.66 0.00 0.66 0 1.00 0.21 1.06 1.0 0.061 93.29 272.74 1.000 16.39 0.97 0.77 0.61 0.61 3.94 1.0 0.011 1.00 179.45 1.000 811.09 413.74 2 3.73 594 1.6E-03 5.5E+02 1.2E-04 11 0.183 9355 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
0.656 5608.04 111.9 0.700 111.9 7.7 3.35 0.63%Interim Cover 0.050 100.7 0.03 0.00 0.03 0 1.70 190.145 ###### 220.94 3385 0.63% 1.0 51% 0.67 0.00 0.67 0 1.00 0.30 1.08 1.0 0.062 ##### 328.79 1.000 16.09 0.97 0.86 0.60 0.60 3.68 1.0 0.012 1.00 220.94 1.000 608.56 312.32 2 3.78 594 1.6E-03 5.5E+02 1.2E-04 11 0.183 9307 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
0.820 5607.88 126.5 0.864 126.4 5.8 2.51 0.68%Interim Cover 0.050 100.7 0.04 0.00 0.04 0 1.70 214.948 ###### 249.72 3061 0.68% 1.1 51% 0.68 0.00 0.68 0 1.00 0.30 1.07 1.0 0.062 ##### 367.68 1.000 16.14 0.97 0.91 0.60 0.60 3.37 1.0 0.013 1.00 249.72 1.000 487.04 251.59 2 3.83 594 1.6E-03 5.5E+02 1.2E-04 11 0.184 9259 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
0.984 5607.72 125.0 0.813 125.0 3.0 1.31 0.65%Interim Cover 0.050 100.7 0.05 0.00 0.05 0 1.70 212.466 ###### 246.80 2521 0.65% 1.0 51% 0.69 0.00 0.69 0 1.00 0.30 1.07 1.0 0.062 ##### 363.74 1.000 16.20 0.97 0.91 0.60 0.60 3.13 1.0 0.014 1.00 246.80 1.000 406.03 211.11 2 3.88 594 1.6E-03 5.5E+02 1.2E-04 11 0.184 9213 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.148 5607.55 117.6 0.695 117.6 1.1 0.48 0.59%Interim Cover 0.050 100.7 0.06 0.00 0.06 0 1.70 199.903 ###### 232.19 2032 0.59% 1.0 51% 0.69 0.00 0.69 0 1.00 0.30 1.06 1.0 0.062 ##### 343.99 1.000 16.25 0.97 0.88 0.60 0.60 2.95 1.0 0.015 1.00 232.19 1.000 348.16 182.21 2 3.93 594 1.6E-03 5.5E+02 1.2E-04 11 0.185 9167 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.312 5607.39 104.2 0.601 104.2 1.5 0.66 0.58%Interim Cover 0.050 100.7 0.07 0.00 0.07 0 1.70 177.140 ###### 205.76 1576 0.58% 1.0 51% 0.70 0.00 0.70 0 1.00 0.28 1.06 1.0 0.061 ##### 308.28 1.000 16.36 0.97 0.83 0.60 0.60 2.79 1.0 0.015 1.00 205.76 1.000 304.76 160.56 2 3.98 594 1.6E-03 5.5E+02 1.2E-04 11 0.185 9122 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.476 5607.22 81.5 0.591 81.5 0.0 0.01 0.73%Interim Cover 0.050 100.7 0.07 0.00 0.07 0 1.70 138.465 ###### 160.82 1094 0.73% 1.2 51% 0.71 0.00 0.71 0 1.00 0.18 1.03 1.0 0.060 86.76 247.58 1.000 16.74 0.97 0.73 0.63 0.63 2.45 1.0 0.017 1.00 160.82 1.000 271.00 143.87 2 4.03 594 1.6E-03 5.5E+02 1.3E-04 11 0.186 9078 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.640 5607.06 72.9 0.416 72.9 -0.0 -0.01 0.57%Interim Cover 0.050 100.7 0.08 0.00 0.08 0 1.70 123.947 ###### 143.96 882 0.57% 1.1 51% 0.72 0.00 0.72 0 1.00 0.15 1.03 1.0 0.059 80.84 224.80 1.000 16.84 0.97 0.69 0.65 0.65 2.25 1.0 0.019 1.00 143.96 0.357 87.22 52.03 2 4.08 594 1.6E-03 5.5E+02 1.3E-04 11 0.187 9035 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.804 5606.90 64.8 0.713 64.8 0.1 0.05 1.10%Interim Cover 0.050 100.7 0.09 0.00 0.09 0 1.70 110.075 ###### 127.85 712 1.10% 1.4 51% 0.73 0.00 0.73 0 1.00 0.13 1.02 1.0 0.059 75.19 203.03 1.000 16.92 0.97 0.65 0.67 0.67 2.08 1.0 0.020 1.00 127.85 0.274 60.88 38.90 2 4.13 594 1.6E-03 5.5E+02 1.3E-04 11 0.187 8992 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
1.968 5606.73 61.1 0.519 61.1 0.6 0.27 0.85%Interim Cover 0.050 100.7 0.10 0.00 0.10 0 1.70 103.887 ###### 120.67 615 0.85% 1.3 51% 0.74 0.00 0.74 0 1.00 0.13 1.02 1.0 0.059 72.67 193.33 0.854 14.50 0.97 0.63 0.68 0.68 1.98 1.0 0.022 1.00 120.67 0.243 49.53 32.02 2 4.18 594 1.6E-03 5.5E+02 1.3E-04 11 0.188 8950 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.133 5606.57 57.5 0.435 57.5 2.3 0.98 0.76%Interim Cover 0.050 100.7 0.11 0.00 0.11 0 1.70 97.801 ###### 113.62 535 0.76% 1.3 51% 0.74 0.00 0.74 0 1.00 0.12 1.02 1.0 0.059 70.19 183.81 0.604 10.29 0.97 0.62 0.69 0.69 1.90 1.0 0.022 1.00 113.62 0.216 40.67 25.48 2 4.23 594 1.6E-03 5.5E+02 1.3E-04 11 0.188 8909 0.02%2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.297 5606.40 54.3 0.512 54.3 5.3 2.29 0.94%Interim Cover 0.050 100.7 0.12 0.00 0.12 0 1.70 92.276 ###### 107.24 469 0.94% 1.4 51% 0.75 0.00 0.75 0 1.00 0.11 1.02 1.0 0.059 67.95 175.19 0.466 7.97 0.97 0.60 0.70 0.70 1.82 1.0 0.023 1.00 107.24 0.195 33.99 20.98 2 4.28 594 1.6E-03 5.5E+02 1.3E-04 11 0.189 8868 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.461 5606.24 53.3 1.269 53.3 2.3 0.99 2.38%Interim Cover 0.050 100.7 0.12 0.00 0.12 0 1.70 90.542 ###### 105.19 429 2.39% 1.8 51% 0.76 0.00 0.76 0 1.00 0.11 1.01 1.0 0.058 67.23 172.42 0.433 7.42 0.97 0.59 0.70 0.70 1.78 1.0 0.024 1.11 116.73 0.228 37.15 22.28 2 4.33 594 1.6E-03 5.5E+02 1.3E-04 11 0.189 8828 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.625 5606.08 76.9 1.662 76.9 5.5 2.37 2.16%Interim Cover 0.050 100.7 0.13 0.00 0.13 0 1.70 130.747 ###### 151.92 581 2.16% 1.7 51% 0.77 0.00 0.77 0 1.00 0.16 1.02 1.0 0.059 83.63 235.56 1.000 17.06 0.97 0.71 0.64 0.64 1.95 1.0 0.022 1.04 158.48 0.450 68.81 42.94 2 4.38 594 1.6E-03 5.5E+02 1.4E-04 11 0.190 8788 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.789 5605.91 222.0 2.940 221.9 14.3 6.21 1.32%Interim Cover 0.050 100.7 0.14 0.00 0.14 0 1.61 358.013 ###### 415.98 1580 1.33% 1.4 51% 0.78 0.00 0.78 0 0.99 0.30 1.03 1.0 0.059 ##### 592.28 1.000 16.87 0.97 1.18 0.60 0.60 2.07 1.0 0.021 1.00 415.98 1.000 143.93 80.40 2 4.43 594 1.6E-03 5.5E+02 1.4E-04 11 0.190 8749 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
2.953 5605.75 222.9 2.175 222.9 15.8 6.86 0.98%Interim Cover 0.050 100.7 0.15 0.00 0.15 0 1.59 354.180 ###### 411.54 1498 0.98% 1.2 51% 0.79 0.00 0.79 0 0.99 0.30 1.03 1.0 0.059 ##### 586.29 1.000 16.94 0.97 1.17 0.60 0.60 2.02 1.0 0.021 1.00 411.54 1.000 135.98 76.46 2 4.48 594 1.6E-03 5.5E+02 1.4E-04 11 0.191 8711 0.02% 2.00 0.65 0.03% 0.000 0.34 0.079 0.765 0.00% 0.0000
3.117 5605.58 213.5 2.265 213.3 28.9 12.50 1.06%Interim Cover 0.050 100.7 0.16 0.00 0.16 0 1.57 334.170 ###### 388.45 1359 1.06% 1.3 51% 0.79 0.00 0.79 0 0.99 0.30 1.02 1.0 0.059 ##### 555.08 1.000 17.00 0.97 1.14 0.60 0.60 1.98 1.0 0.022 1.00 388.45 1.000 128.88 72.94 2 4.53 495 1.6E-03 3.8E+02 2.0E-04 11 0.191 8673 0.04% 2.00 0.65 0.03% 0.003 0.34 0.079 0.765 0.53% 0.0009
3.281 5605.42 207.8 1.697 207.7 13.6 5.90 0.82%Sand Tailings 0.051 102.8 0.17 0.00 0.17 0 1.55 320.918 ###### 372.88 1255 0.82% 1.2 18% 0.80 0.00 0.80 0 0.99 0.30 1.02 1.0 0.059 ##### 490.30 1.000 17.07 0.96 1.11 0.60 0.60 1.93 1.0 0.022 1.00 372.88 1.000 122.36 69.71 2 4.58 495 1.6E-03 3.9E+02 2.0E-04 0 0.196 11168 0.05% 2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.06% 0.0001
3.445 5605.26 155.2 1.444 155.1 11.4 4.92 0.93%Sand Tailings 0.051 102.8 0.17 0.00 0.17 0 1.53 236.617 ###### 274.94 892 0.93% 1.3 18% 0.81 0.00 0.81 0 0.99 0.30 1.02 1.0 0.058 92.38 367.32 1.000 17.14 0.96 0.96 0.60 0.60 1.90 1.0 0.022 1.00 274.94 1.000 116.47 66.80 2 4.63 495 1.6E-03 3.9E+02 2.0E-04 0 0.196 11121 0.05% 2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.06% 0.0001
3.609 5605.09 125.3 1.613 125.3 6.9 2.98 1.29%Sand Tailings 0.051 102.8 0.18 0.00 0.18 0 1.57 197.324 ###### 229.26 687 1.29% 1.5 18% 0.82 0.00 0.82 0 0.99 0.30 1.01 1.0 0.058 80.70 309.96 1.000 17.21 0.96 0.87 0.60 0.60 1.86 1.0 0.023 1.00 229.26 1.000 111.12 64.17 2 4.68 495 1.6E-03 3.9E+02 2.0E-04 0 0.197 11074 0.05% 2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.06% 0.0001
3.773 5604.93 100.1 0.839 100.1 7.6 3.29 0.84%Sand Tailings 0.051 102.8 0.19 0.00 0.19 0 1.66 166.576 ###### 193.56 524 0.84% 1.4 18% 0.83 0.00 0.83 0 0.99 0.24 1.01 1.0 0.058 71.57 265.13 1.000 17.31 0.96 0.80 0.60 0.60 1.83 1.0 0.023 1.00 193.56 1.000 106.25 61.78 2 4.73 495 1.6E-03 3.9E+02 2.1E-04 0 0.197 11027 0.05% 2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.07% 0.0001
3.937 5604.76 82.6 1.213 82.5 16.4 7.12 1.47%Sand Tailings 0.051 102.8 0.20 0.00 0.20 0 1.70 140.267 ###### 163.11 414 1.47% 1.6 18% 0.84 0.00 0.84 0 0.99 0.18 1.01 1.0 0.057 63.79 226.90 1.000 17.41 0.96 0.74 0.63 0.63 1.72 1.0 0.025 1.00 163.11 1.000 101.79 59.60 2 4.78 495 1.6E-03 3.9E+02 2.1E-04 0 0.198 10981 0.05% 2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.07% 0.0001
4.101 5604.60 116.5 1.585 116.5 3.6 1.57 1.36%Sand Tailings 0.051 102.8 0.21 0.00 0.21 0 1.56 182.193 ###### 211.65 560 1.36% 1.5 18% 0.84 0.00 0.84 0 0.99 0.30 1.01 1.0 0.057 76.20 287.84 1.000 17.41 0.96 0.84 0.60 0.60 1.77 1.0 0.024 1.00 211.65 1.000 97.69 57.55 2 4.83 495 1.6E-03 3.9E+02 2.1E-04 0 0.198 10936 0.05% 2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.08% 0.0001
4.265 5604.43 95.5 1.860 95.4 10.8 4.68 1.95%Sand Tailings 0.051 102.8 0.22 0.00 0.22 0 1.63 155.946 ###### 181.25 441 1.95% 1.7 18% 0.85 0.00 0.85 0 0.99 0.21 1.00 1.0 0.057 68.43 249.68 1.000 17.50 0.96 0.78 0.61 0.61 1.71 1.0 0.025 1.05 190.74 1.000 93.92 55.71 2 4.88 495 1.6E-03 3.9E+02 2.1E-04 0 0.199 10892 0.05% 2.20 1.00 0.03% 0.001 0.34 0.079 0.765 0.08% 0.0001
4.429 5604.27 82.7 1.658 82.6 23.5 10.20 2.00%Sand-Slime Tailing 0.047 93.3 0.22 0.00 0.22 0 1.68 138.765 ###### 161.45 369 2.01% 1.8 47% 0.86 0.00 0.86 0 0.99 0.18 1.00 1.0 0.057 86.93 248.38 1.000 17.55 0.96 0.73 0.63 0.63 1.64 1.0 0.026 1.09 175.31 1.000 90.74 54.14 2 4.93 495 1.4E-03 3.5E+02 2.4E-04 10 0.196 8612 0.05%2.00 0.65 0.03% 0.008 0.34 0.079 0.765 1.18% 0.0019
4.593 5604.11 86.3 1.621 85.5 118.1 51.17 1.88%Sand-Slime Tailing 0.047 93.3 0.23 0.00 0.23 0 1.65 140.841 ###### 164.99 372 1.88% 1.7 47% 0.87 0.00 0.87 0 0.98 0.18 1.00 1.0 0.057 88.16 253.15 1.000 17.59 0.96 0.74 0.63 0.63 1.63 1.0 0.026 1.07 176.22 1.000 87.77 52.68 2 4.98 495 1.4E-03 3.5E+02 2.4E-04 10 0.196 8580 0.05%2.00 0.65 0.03% 0.008 0.34 0.079 0.765 1.21% 0.0020
4.757 5603.94 76.9 1.353 76.5 64.1 27.77 1.76%Sand Tailings 0.051 102.8 0.24 0.00 0.24 0 1.68 128.249 ###### 149.73 320 1.76% 1.8 18% 0.88 0.00 0.88 0 0.98 0.16 1.00 1.0 0.057 60.37 210.10 1.000 17.63 0.96 0.71 0.65 0.65 1.57 1.0 0.027 1.08 161.01 1.000 84.72 51.18 2 5.03 495 1.6E-03 3.9E+02 2.2E-04 0 0.200 10770 0.06% 2.20 1.00 0.03% 0.001 0.34 0.079 0.765 0.09% 0.0001
4.921 5603.78 61.2 1.819 60.2 164.5 71.28 2.97%Sand-Slime Tailing 0.047 93.3 0.25 0.00 0.25 0 1.70 102.374 ###### 120.93 247 2.98% 2.0 47% 0.88 0.00 0.88 0 0.98 0.13 1.00 1.0 0.057 72.71 193.64 0.865 15.27 0.96 0.63 0.68 0.68 1.49 1.0 0.029 1.31 158.55 0.451 37.01 26.14 2 5.08 495 1.4E-03 3.5E+02 2.4E-04 10 0.197 8515 0.05%2.00 0.65 0.03% 0.008 0.34 0.079 0.765 1.28% 0.0021
5.085 5603.61 58.0 1.686 56.9 179.6 77.81 2.91%Sand-Slime Tailing 0.047 93.3 0.26 0.00 0.26 0 1.70 96.747 ###### 114.58 227 2.92% 2.0 47% 0.89 0.00 0.89 0 0.98 0.12 1.00 1.0 0.057 70.49 185.07 0.630 11.14 0.96 0.62 0.69 0.69 1.46 1.0 0.029 1.33 152.13 0.407 32.47 21.81 2 5.13 495 1.4E-03 3.5E+02 2.5E-04 10 0.197 8485 0.05% 2.00 0.65 0.03% 0.009 0.34 0.079 0.765 1.31% 0.0022
5.249 5603.45 60.7 1.440 60.7 -1.3 -0.55 2.37%Sand-Slime Tailing 0.059 119.0 0.26 0.00 0.26 1 1.70 103.139 ###### 119.77 229 2.38% 1.9 47% 0.90 0.00 0.90 0 0.98 0.12 0.99 1.0 0.056 72.31 192.08 0.813 14.42 0.96 0.63 0.68 0.68 1.45 1.0 0.029 1.23 147.82 0.380 29.38 21.90 2 5.18 495 1.8E-03 4.5E+02 1.9E-04 10 0.198 8447 0.03% 2.00 0.65 0.03% 0.002 0.34 0.079 0.765 0.33% 0.0005
5.413 5603.29 46.9 1.368 46.8 16.1 6.96 2.92%Sand-Slime Tailing 0.059 119.0 0.27 0.01 0.27 1 1.70 79.509 ###### 92.54 174 2.94% 2.1 47% 0.91 0.00 0.91 0 0.98 0.10 0.99 1.0 0.056 62.76 155.30 0.298 5.29 0.96 0.56 0.72 0.72 1.38 1.0 0.031 1.43 132.68 0.297 22.57 13.93 2 5.23 495 1.8E-03 4.5E+02 2.0E-04 10 0.199 8409 0.03%2.00 0.65 0.03% 0.002 0.34 0.079 0.765 0.38% 0.0006
5.577 5603.12 43.9 1.137 43.5 70.6 30.59 2.59%Sand-Slime Tailing 0.059 119.0 0.28 0.01 0.27 1 1.70 73.882 ###### 86.68 160 2.61% 2.1 47% 0.92 0.00 0.92 0 0.98 0.10 0.99 1.0 0.056 60.70 147.38 0.260 4.62 0.96 0.54 0.73 0.73 1.36 1.0 0.031 1.40 121.40 0.246 18.40 11.51 2 5.28 495 1.8E-03 4.5E+02 2.0E-04 10 0.199 8372 0.03%2.00 0.65 0.03% 0.003 0.34 0.079 0.765 0.42% 0.0007
5.741 5602.96 101.5 1.244 99.3 344.3 ##### 1.23%Sand Tailings 0.062 123.5 0.29 0.02 0.28 1 1.50 149.486 ###### 177.38 365 1.23% 1.6 18% 0.93 0.00 0.93 0 0.98 0.21 0.98 1.0 0.056 67.44 244.81 1.000 17.98 0.96 0.77 0.62 0.62 1.55 1.0 0.027 1.00 177.38 1.000 73.35 45.66 2 5.33 495 1.9E-03 4.7E+02 1.9E-04 0 0.203 10506 0.04% 2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.04% 0.0001
5.905 5602.79 130.7 1.385 130.5 35.7 15.48 1.06%Sand Tailings 0.062 123.5 0.30 0.02 0.28 1 1.41 184.468 ###### 214.62 462 1.06% 1.5 18% 0.94 0.00 0.94 0 0.98 0.30 0.97 1.0 0.055 76.96 291.57 1.000 18.19 0.96 0.85 0.60 0.60 1.56 1.0 0.027 1.00 214.62 1.000 72.08 45.14 2 5.38 495 1.9E-03 4.7E+02 2.0E-04 0 0.203 10460 0.04% 2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.04% 0.0001
6.069 5602.63 99.5 1.248 99.5 9.3 4.02 1.25%Sand Tailings 0.062 123.5 0.31 0.03 0.29 1 1.50 148.832 ###### 172.96 345 1.26% 1.6 18% 0.95 0.00 0.95 0 0.98 0.20 0.98 1.0 0.055 66.31 239.27 1.000 18.08 0.96 0.76 0.62 0.62 1.52 1.0 0.028 1.00 172.96 1.000 70.85 44.47 2 5.43 495 1.9E-03 4.7E+02 2.0E-04 0 0.204 10414 0.04% 2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.04% 0.0001
6.234 5602.47 80.3 0.821 80.3 4.9 2.11 1.02%Sand Tailings 0.062 123.5 0.32 0.03 0.29 1 1.56 125.079 ###### 145.33 273 1.03% 1.6 18% 0.96 0.00 0.96 0 0.98 0.15 0.98 1.0 0.055 59.24 204.57 1.000 18.04 0.96 0.70 0.65 0.65 1.46 1.0 0.029 1.00 145.33 0.365 25.46 21.75 2 5.48 495 1.9E-03 4.7E+02 2.0E-04 0 0.204 10369 0.04% 2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.05% 0.0001
6.398 5602.30 62.4 0.678 62.4 1.2 0.50 1.09%Sand Tailings 0.062 123.5 0.33 0.04 0.30 1 1.63 101.688 ###### 118.12 208 1.09% 1.7 18% 0.97 0.00 0.97 0 0.97 0.12 0.99 1.0 0.055 52.29 170.40 0.412 7.42 0.96 0.63 0.69 0.69 1.40 1.0 0.030 1.04 123.04 0.253 17.35 12.38 2 5.53 495 1.9E-03 4.7E+02 2.0E-04 0 0.205 10324 0.04%2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.05% 0.0001
6.562 5602.14 65.4 0.430 65.4 1.8 0.78 0.66%Sand Tailings 0.062 123.5 0.35 0.04 0.30 1 1.61 105.030 ###### 122.01 215 0.66% 1.5 18% 0.98 0.00 0.98 0 0.97 0.13 0.98 1.0 0.055 53.28 175.29 0.468 8.45 0.96 0.64 0.68 0.68 1.40 1.0 0.030 1.00 122.01 0.249 16.78 12.62 2 5.58 495 1.9E-03 4.7E+02 2.0E-04 0 0.205 10280 0.05%2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.05% 0.0001
6.726 5601.97 100.8 0.407 100.8 5.9 2.54 0.40%Sand Tailings 0.062 123.5 0.36 0.05 0.31 1 1.46 147.482 ###### 171.35 327 0.41% 1.3 18% 0.99 0.00 0.99 0 0.97 0.19 0.97 1.0 0.055 65.90 237.25 1.000 18.30 0.96 0.76 0.62 0.62 1.48 1.0 0.029 1.00 171.35 1.000 66.34 42.32 2 5.63 495 1.9E-03 4.7E+02 2.1E-04 0 0.206 10237 0.05% 2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.05% 0.0001
6.890 5601.81 94.6 0.393 94.5 3.2 1.37 0.42%Sand Tailings 0.062 123.5 0.37 0.05 0.31 1 1.48 139.500 ###### 162.05 301 0.42% 1.3 18% 1.00 0.00 1.00 0 0.97 0.18 0.97 1.0 0.055 63.52 225.57 1.000 18.31 0.96 0.73 0.63 0.63 1.45 1.0 0.029 1.00 162.05 1.000 65.31 41.81 2 5.68 495 1.9E-03 4.7E+02 2.1E-04 0 0.206 10195 0.05% 2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.06% 0.0001
7.054 5601.65 89.5 0.390 89.5 2.8 1.22 0.44%Sand Tailings 0.062 123.5 0.38 0.06 0.32 1 1.48 132.877 ###### 154.36 281 0.44% 1.3 18% 1.01 0.00 1.01 0 0.97 0.17 0.97 1.0 0.055 61.55 215.91 1.000 18.32 0.96 0.72 0.64 0.64 1.43 1.0 0.029 1.00 154.36 0.422 27.14 22.73 2 5.73 495 1.9E-03 4.7E+02 2.1E-04 0 0.207 10153 0.05% 2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.06% 0.0001
7.218 5601.48 87.6 0.521 87.5 3.6 1.56 0.60%Sand Tailings 0.062 123.5 0.39 0.06 0.32 1 1.48 129.857 ###### 150.86 270 0.60% 1.4 18% 1.02 0.00 1.02 0 0.97 0.16 0.97 1.0 0.054 60.66 211.52 1.000 18.36 0.96 0.71 0.65 0.65 1.42 1.0 0.030 1.00 150.86 0.399 25.29 21.82 2 5.78 495 1.9E-03 4.7E+02 2.1E-04 0 0.207 10111 0.05% 2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.06% 0.0001
7.382 5601.32 81.6 0.625 81.5 3.4 1.48 0.77%Sand Tailings 0.062 123.5 0.40 0.07 0.33 1 1.50 122.012 ###### 141.75 248 0.77% 1.5 18% 1.03 0.00 1.03 0 0.97 0.15 0.97 1.0 0.054 58.33 200.07 1.000 18.37 0.96 0.69 0.66 0.66 1.39 1.0 0.030 1.00 141.75 0.345 21.51 19.94 2 5.83 495 1.9E-03 4.7E+02 2.1E-04 0 0.208 10071 0.05% 2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.07% 0.0001
7.546 5601.15 73.8 0.669 73.8 2.8 1.20 0.91%Sand Tailings 0.062 123.5 0.41 0.07 0.33 1 1.52 111.871 ###### 129.96 221 0.91% 1.6 18% 1.04 0.00 1.04 0 0.97 0.13 0.97 1.0 0.054 55.31 185.28 0.634 11.65 0.96 0.66 0.67 0.67 1.37 1.0 0.031 1.00 129.96 0.284 17.47 14.56 2 5.88 495 1.9E-03 4.7E+02 2.2E-04 0 0.208 10030 0.05% 2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.07% 0.0001
7.710 5600.99 67.0 0.509 67.0 2.8 1.20 0.76%Sand Tailings 0.062 123.5 0.42 0.08 0.34 1 1.53 102.854 ###### 119.49 197 0.76% 1.6 18% 1.05 0.00 1.05 0 0.97 0.12 0.98 1.0 0.054 52.64 172.13 0.430 7.89 0.95 0.63 0.68 0.68 1.34 1.0 0.031 1.00 119.49 0.239 14.46 11.18 2 5.93 495 1.9E-03 4.7E+02 2.2E-04 0 0.208 9991 0.05%2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.07% 0.0001
7.874 5600.83 74.0 0.388 74.0 2.7 1.16 0.52%Sand Tailings 0.062 123.5 0.43 0.08 0.34 1 1.50 111.005 ###### 128.95 215 0.53% 1.5 18% 1.06 0.00 1.06 0 0.96 0.13 0.97 1.0 0.054 55.06 184.01 0.608 11.22 0.95 0.66 0.67 0.67 1.35 1.0 0.031 1.00 128.95 0.279 16.69 13.95 2 5.98 495 1.9E-03 4.7E+02 2.2E-04 0 0.209 9952 0.05% 2.20 1.00 0.03% 0.000 0.34 0.079 0.765 0.08% 0.0001
8.038 5600.66 73.6 0.370 73.6 3.4 1.48 0.50%Sand Tailings 0.062 123.5 0.44 0.09 0.35 1 1.49 109.856 ###### 127.63 210 0.51% 1.5 18% 1.07 0.00 1.07 0 0.96 0.13 0.97 1.0 0.054 54.72 182.35 0.576 10.65 0.95 0.65 0.67 0.67 1.34 1.0 0.031 1.00 127.63 0.273 16.10 13.37 2 6.03 495 1.9E-03 4.7E+02 2.2E-04 0 0.209 9913 0.05% 2.20 1.00 0.03% 0.001 0.34 0.079 0.765 0.08% 0.0001
8.202 5600.50 70.8 0.387 70.8 3.7 1.61 0.55%Sand Tailings 0.062 123.5 0.45 0.09 0.35 1 1.50 105.908 ###### 123.05 200 0.55% 1.5 18% 1.08 0.00 1.08 0 0.96 0.13 0.97 1.0 0.054 53.55 176.59 0.485 8.97 0.95 0.64 0.68 0.68 1.33 1.0 0.032 1.00 123.05 0.253 14.71 11.84 2 6.08 495 1.9E-03 4.7E+02 2.2E-04 0 0.210 9875 0.05%2.20 1.00 0.03% 0.001 0.34 0.079 0.765 0.08% 0.0001
8.366 5600.33 61.3 0.408 61.3 4.3 1.88 0.67%Sand Tailings 0.062 123.5 0.46 0.10 0.36 1 1.52 93.454 ###### 108.59 170 0.67% 1.6 18% 1.09 0.00 1.09 0 0.96 0.11 0.97 1.0 0.054 49.85 158.44 0.316 5.84 0.95 0.60 0.70 0.70 1.30 1.0 0.032 1.00 108.59 0.199 11.40 8.62 2 6.13 495 1.9E-03 4.7E+02 2.3E-04 0 0.210 9837 0.06% 2.20 1.00 0.03% 0.001 0.34 0.079 0.765 0.09% 0.0001
8.530 5600.17 54.8 0.384 54.8 3.9 1.69 0.70%Sand Tailings 0.062 123.5 0.47 0.10 0.36 1 1.54 84.591 ###### 98.29 150 0.71% 1.7 18% 1.10 0.00 1.10 0 0.96 0.10 0.97 1.0 0.054 47.22 145.51 0.252 4.66 0.95 0.57 0.71 0.71 1.28 1.0 0.033 1.02 100.58 0.175 9.87 7.27 2 6.18 495 1.9E-03 4.7E+02 2.3E-04 0 0.211 9800 0.06%2.20 1.00 0.03% 0.001 0.34 0.079 0.765 0.09% 0.0001
8.694 5600.01 51.9 0.384 51.9 4.9 2.12 0.74%Sand Tailings 0.062 123.5 0.48 0.11 0.37 1 1.55 80.294 ###### 93.31 140 0.75% 1.7 18% 1.11 0.00 1.11 0 0.96 0.10 0.97 1.0 0.054 45.94 139.26 0.230 4.25 0.95 0.56 0.72 0.72 1.27 1.0 0.033 1.05 97.92 0.167 9.33 6.79 2 6.23 495 1.9E-03 4.7E+02 2.3E-04 0 0.211 9764 0.06%2.20 1.00 0.03% 0.001 0.34 0.079 0.765 0.09% 0.0002
8.858 5599.84 50.9 0.369 50.9 5.6 2.43 0.73%Sand Tailings 0.062 123.5 0.49 0.11 0.37 1 1.54 78.492 ###### 91.23 135 0.73% 1.7 18% 1.12 0.00 1.12 0 0.96 0.10 0.97 1.0 0.054 45.41 136.64 0.222 4.11 0.95 0.55 0.72 0.72 1.26 1.0 0.033 1.05 96.09 0.163 8.95 6.53 2 6.28 495 1.9E-03 4.7E+02 2.3E-04 0 0.212 9727 0.06%2.20 1.00 0.03% 0.001 0.34 0.079 0.765 0.10% 0.0002
9.022 5599.68 49.7 0.378 49.7 5.8 2.50 0.76%Sand Tailings 0.062 123.5 0.50 0.12 0.38 1 1.54 76.518 ###### 88.94 130 0.77% 1.7 18% 1.13 0.00 1.13 0 0.96 0.10 0.97 1.0 0.054 44.83 133.76 0.213 3.96 0.95 0.54 0.73 0.73 1.25 1.0 0.034 1.07 95.21 0.160 8.71 6.33 2 6.33 495 1.9E-03 4.7E+02 2.4E-04 0 0.212 9692 0.06%2.20 1.00 0.03% 0.001 0.34 0.079 0.765 0.10% 0.0002
9.186 5599.51 42.3 0.401 42.3 5.9 2.56 0.95%Sand Tailings 0.062 123.5 0.51 0.12 0.38 1 1.57 66.297 921.53 77.07 109 0.96% 1.9 18% 1.14 0.00 1.14 0 0.96 0.09 0.97 1.0 0.054 41.79 118.86 0.177 3.29 0.95 0.51 0.75 0.75 1.23 1.0 0.034 1.16 89.46 0.147 7.86 5.57 2 6.38 495 1.9E-03 4.7E+02 2.4E-04 0 0.213 9656 0.06%2.20 1.00 0.03% 0.001 0.34 0.079 0.765 0.10% 0.0002
9.350 5599.35 35.3 0.359 35.3 5.1 2.19 1.02%Sand-Slime Tailing 0.059 119.0 0.52 0.13 0.39 1 1.60 56.332 783.02 65.48 90 1.03% 2.0 47% 1.15 0.00 1.15 0 0.96 0.08 0.98 1.0 0.054 53.27 118.75 0.177 3.28 0.95 0.47 0.77 0.77 1.21 1.0 0.035 1.25 81.59 0.131 6.92 5.10 2 6.43 460 1.8E-03 3.9E+02 2.9E-04 10 0.211 7626 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.85% 0.0030
9.514 5599.19 31.3 0.268 31.2 5.2 2.24 0.86%Sand-Slime Tailing 0.059 119.0 0.53 0.13 0.39 1 1.61 50.398 700.54 58.60 78 0.87% 2.0 47% 1.16 0.00 1.16 0 0.95 0.08 0.98 1.0 0.054 50.85 109.45 0.159 2.95 0.95 0.44 0.78 0.78 1.19 1.0 0.035 1.25 73.12 0.116 6.10 4.52 2 6.48 460 1.8E-03 3.9E+02 2.9E-04 10 0.211 7599 0.07% 2.00 0.65 0.03% 0.012 0.34 0.079 0.765 1.89% 0.0031
9.678 5599.02 41.5 0.241 41.4 6.6 2.87 0.58%Sand Tailings 0.062 123.5 0.54 0.14 0.40 1 1.54 63.961 889.06 74.36 103 0.59% 1.8 18% 1.17 0.00 1.17 0 0.95 0.09 0.97 1.0 0.054 41.10 115.46 0.170 3.18 0.95 0.50 0.75 0.75 1.21 1.0 0.035 1.08 80.27 0.128 6.63 4.90 2 6.53 460 1.9E-03 4.1E+02 2.8E-04 0 0.214 9556 0.10%2.20 1.00 0.03% 0.001 0.34 0.079 0.765 0.22% 0.0004
9.842 5598.86 40.4 0.177 40.3 6.1 2.63 0.44%Sand Tailings 0.062 123.5 0.55 0.14 0.40 1 1.54 62.123 863.51 72.22 99 0.44% 1.7 18% 1.18 0.00 1.18 0 0.95 0.09 0.97 1.0 0.054 40.55 112.77 0.165 3.08 0.95 0.49 0.75 0.75 1.21 1.0 0.035 1.05 75.47 0.120 6.14 4.61 2 6.58 460 1.9E-03 4.1E+02 2.8E-04 0 0.214 9522 0.10% 2.20 1.00 0.03% 0.002 0.34 0.079 0.765 0.23% 0.0004
10.006 5598.69 28.6 0.177 28.5 5.9 2.55 0.62%Sand-Slime Tailing 0.059 119.0 0.56 0.15 0.41 1 1.60 45.687 635.05 53.13 69 0.63% 1.9 47% 1.19 0.00 1.19 0 0.95 0.07 0.98 1.0 0.054 48.94 102.07 0.146 2.72 0.95 0.42 0.79 0.79 1.17 1.0 0.036 1.21 64.44 0.105 5.31 4.01 2 6.63 460 1.8E-03 3.9E+02 3.0E-04 10 0.213 7519 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 2.00% 0.0033
10.170 5598.53 30.6 0.160 30.5 5.3 2.29 0.52%Sand-Slime Tailing 0.059 119.0 0.57 0.16 0.41 1 1.58 48.157 669.38 55.99 73 0.53% 1.9 47% 1.20 0.00 1.20 0 0.95 0.07 0.97 1.0 0.054 49.94 105.93 0.153 2.85 0.95 0.43 0.78 0.78 1.17 1.0 0.036 1.16 64.84 0.105 5.27 4.06 2 6.68 460 1.8E-03 3.9E+02 3.0E-04 10 0.213 7494 0.07% 2.00 0.65 0.03% 0.013 0.34 0.079 0.765 2.03% 0.0033
10.335 5598.37 30.2 0.173 30.1 5.8 2.51 0.57%Sand-Slime Tailing 0.059 119.0 0.58 0.16 0.42 1 1.57 47.326 657.83 55.03 71 0.58% 1.9 47% 1.21 0.00 1.21 0 0.95 0.07 0.97 1.0 0.053 49.60 104.63 0.150 2.81 0.95 0.43 0.79 0.79 1.17 1.0 0.036 1.18 65.18 0.106 5.23 4.02 2 6.73 460 1.8E-03 3.9E+02 3.0E-04 10 0.213 7469 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.07% 0.0034
10.499 5598.20 28.4 0.178 28.4 6.7 2.89 0.63%Sand-Slime Tailing 0.059 119.0 0.59 0.17 0.42 1 1.57 44.580 619.66 51.85 66 0.64% 1.9 47% 1.22 0.00 1.22 0 0.95 0.07 0.97 1.0 0.053 48.49 100.34 0.143 2.68 0.95 0.42 0.79 0.79 1.16 1.0 0.036 1.23 63.89 0.104 5.11 3.89 2 6.78 460 1.8E-03 3.9E+02 3.1E-04 10 0.214 7444 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.11% 0.0035
10.663 5598.04 24.0 0.188 24.0 6.8 2.94 0.78%Sand-Slime Tailing 0.059 119.0 0.60 0.17 0.43 1 1.59 38.157 530.38 44.40 55 0.80% 2.1 47% 1.23 0.00 1.23 0 0.95 0.07 0.98 1.0 0.053 45.87 90.27 0.127 2.38 0.95 0.38 0.80 0.80 1.15 1.0 0.036 1.39 61.79 0.102 4.94 3.66 2 6.83 460 1.8E-03 3.9E+02 3.1E-04 10 0.214 7420 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.14% 0.0035
10.827 5597.87 22.1 0.178 22.0 7.3 3.16 0.81%Sand-Slime Tailing 0.059 119.0 0.61 0.18 0.43 1 1.60 35.208 489.40 40.98 50 0.83% 2.1 47% 1.24 0.00 1.24 0 0.95 0.07 0.98 1.0 0.053 44.67 85.65 0.121 2.26 0.95 0.37 0.80 0.80 1.15 1.0 0.036 1.46 60.03 0.100 4.80 3.53 2 6.88 460 1.8E-03 3.9E+02 3.1E-04 10 0.215 7396 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.18% 0.0036
10.991 5597.71 19.0 0.177 19.0 8.1 3.53 0.93%Sand-Slime Tailing 0.059 119.0 0.62 0.18 0.43 1 1.61 30.600 425.34 35.64 42 0.96% 2.2 47% 1.25 0.00 1.25 0 0.94 0.06 0.98 1.0 0.053 42.80 78.43 0.111 2.07 0.95 0.34 0.80 0.80 1.15 1.0 0.036 1.67 59.45 0.100 4.72 3.40 2 6.93 460 1.8E-03 3.9E+02 3.1E-04 10 0.215 7372 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.21% 0.0036
11.155 5597.55 14.9 0.165 14.8 11.6 5.03 1.11%Sand-Slime Tailing 0.059 119.0 0.62 0.19 0.44 1 1.64 24.349 338.45 28.42 33 1.15% 2.3 47% 1.26 0.00 1.26 0 0.94 0.06 0.98 1.0 0.053 40.27 68.69 0.098 1.84 0.95 0.31 0.80 0.80 1.14 1.0 0.036 2.09 59.25 0.099 4.67 3.25 2 6.98 460 1.8E-03 3.9E+02 3.1E-04 10 0.216 7348 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.25% 0.0037
11.319 5597.38 13.9 0.096 13.8 17.0 7.37 0.69%Sand-Slime Tailing 0.059 119.0 0.63 0.19 0.44 1 1.64 22.664 315.02 26.52 30 0.72% 2.3 47% 1.27 0.00 1.27 0 0.94 0.06 0.98 1.0 0.053 39.60 66.13 0.095 1.78 0.95 0.30 0.80 0.80 1.14 1.0 0.037 1.85 48.98 0.091 4.22 3.00 2 7.03 460 1.8E-03 3.9E+02 3.2E-04 10 0.216 7325 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.29% 0.0038
11.483 5597.22 19.1 0.146 19.1 12.4 5.36 0.76%Sand-Slime Tailing 0.059 119.0 0.64 0.20 0.45 1 1.58 30.094 418.31 35.09 41 0.79% 2.2 47% 1.28 0.00 1.28 0 0.94 0.06 0.98 1.0 0.053 42.61 77.70 0.110 2.06 0.95 0.34 0.80 0.80 1.14 1.0 0.037 1.59 55.68 0.096 4.42 3.24 2 7.08 460 1.8E-03 3.9E+02 3.2E-04 10 0.216 7301 0.08% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.32% 0.0038
11.647 5597.05 13.8 0.173 13.8 11.9 5.15 1.25%Sand-Slime Tailing 0.059 119.0 0.65 0.20 0.45 1 1.62 22.264 309.47 26.00 29 1.31% 2.4 47% 1.29 0.00 1.29 0 0.94 0.06 0.98 1.0 0.053 39.42 65.42 0.094 1.77 0.95 0.29 0.80 0.80 1.14 1.0 0.037 2.36 61.36 0.101 4.63 3.20 2 7.13 460 1.8E-03 3.9E+02 3.2E-04 10 0.217 7278 0.09% 2.00 0.65 0.03% 0.015 0.34 0.079 0.765 2.36% 0.0039
11.811 5596.89 11.6 0.154 11.5 16.0 6.92 1.33%Sand-Slime Tailing 0.059 119.0 0.66 0.21 0.46 1 1.63 18.706 260.01 21.91 24 1.41% 2.5 47% 1.30 0.00 1.30 0 0.94 0.05 0.98 1.0 0.053 37.99 59.90 0.088 1.65 0.95 0.27 0.80 0.80 1.13 1.0 0.037 2.78 60.88 0.101 4.56 3.11 2 7.18 460 1.8E-03 3.9E+02 3.2E-04 10 0.217 7256 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.40% 0.0039
11.975 5596.73 15.5 0.105 15.4 21.0 9.12 0.68%Sand-Slime Tailing 0.059 119.0 0.67 0.21 0.46 1 1.58 24.265 337.29 28.42 32 0.71% 2.2 47% 1.31 0.00 1.31 0 0.94 0.06 0.98 1.0 0.053 40.27 68.69 0.098 1.85 0.94 0.31 0.80 0.80 1.13 1.0 0.037 1.76 50.09 0.092 4.10 2.98 2 7.23 460 1.8E-03 3.9E+02 3.3E-04 10 0.218 7233 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.44% 0.0040
12.139 5596.56 15.7 0.104 15.6 11.4 4.93 0.66%Sand-Slime Tailing 0.059 119.0 0.68 0.22 0.47 1 1.57 24.469 340.12 28.55 32 0.69% 2.2 47% 1.32 0.00 1.32 0 0.94 0.06 0.98 1.0 0.053 40.31 68.86 0.098 1.86 0.94 0.31 0.80 0.80 1.13 1.0 0.037 1.75 49.90 0.092 4.05 2.96 2 7.28 460 1.8E-03 3.9E+02 3.3E-04 10 0.218 7211 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.47% 0.0041
12.303 5596.40 14.7 0.073 14.6 11.8 5.11 0.50%Sand-Slime Tailing 0.059 119.0 0.69 0.22 0.47 1 1.57 22.852 317.64 26.67 30 0.52% 2.2 47% 1.33 0.00 1.33 0 0.94 0.06 0.98 1.0 0.053 39.66 66.33 0.095 1.80 0.94 0.30 0.80 0.80 1.13 1.0 0.037 1.69 44.97 0.087 3.84 2.82 2 7.33 460 1.8E-03 3.9E+02 3.3E-04 10 0.218 7189 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.51% 0.0041
12.467 5596.23 12.9 0.081 12.8 12.1 5.25 0.63%Sand-Slime Tailing 0.059 119.0 0.70 0.23 0.48 1 1.57 20.146 280.04 23.54 26 0.66% 2.3 47% 1.34 0.00 1.34 0 0.93 0.05 0.98 1.0 0.053 38.56 62.09 0.090 1.71 0.94 0.28 0.80 0.80 1.13 1.0 0.037 1.98 46.69 0.089 3.86 2.79 2 7.38 460 1.8E-03 3.9E+02 3.3E-04 10 0.219 7167 0.09% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.55% 0.0042
12.631 5596.07 13.9 0.074 13.8 9.8 4.25 0.53%Sand-Slime Tailing 0.059 119.0 0.71 0.23 0.48 1 1.55 21.485 298.64 25.06 27 0.56% 2.3 47% 1.35 0.00 1.35 0 0.93 0.06 0.97 1.0 0.053 39.09 64.16 0.093 1.76 0.94 0.29 0.80 0.80 1.12 1.0 0.037 1.80 45.15 0.088 3.77 2.77 2 7.43 460 1.8E-03 3.9E+02 3.4E-04 10 0.219 7146 0.09% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.59% 0.0042
12.795 5595.90 13.8 0.074 13.8 10.5 4.55 0.53%Sand-Slime Tailing 0.059 119.0 0.72 0.24 0.49 1 1.54 21.243 295.27 24.79 27 0.56% 2.3 47% 1.36 0.00 1.36 0 0.93 0.06 0.97 1.0 0.052 39.00 63.79 0.092 1.76 0.94 0.29 0.80 0.80 1.12 1.0 0.037 1.82 45.16 0.088 3.74 2.75 2 7.48 460 1.8E-03 3.9E+02 3.4E-04 10 0.220 7124 0.10% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.62% 0.0043
12.959 5595.74 14.6 0.071 14.5 12.1 5.22 0.49%Sand-Slime Tailing 0.059 119.0 0.73 0.24 0.49 1 1.53 22.185 308.37 25.90 28 0.51% 2.2 47% 1.37 0.00 1.37 0 0.93 0.06 0.97 1.0 0.052 39.39 65.28 0.094 1.79 0.94 0.29 0.80 0.80 1.12 1.0 0.037 1.72 44.57 0.087 3.68 2.74 2 7.53 460 1.8E-03 3.9E+02 3.4E-04 10 0.220 7103 0.10% 2.00 0.65 0.03% 0.017 0.34 0.079 0.765 2.66% 0.0044
13.123 5595.58 15.1 0.085 15.0 12.9 5.59 0.56%Sand-Slime Tailing 0.059 119.0 0.74 0.25 0.49 1 1.51 22.654 314.89 26.45 29 0.59% 2.2 47% 1.38 0.00 1.38 0 0.93 0.06 0.97 1.0 0.052 39.58 66.03 0.095 1.81 0.94 0.30 0.80 0.80 1.12 1.0 0.037 1.77 46.90 0.089 3.73 2.77 2 7.58 460 1.8E-03 3.9E+02 3.4E-04 10 0.220 7082 0.10% 2.00 0.65 0.03% 0.018 0.34 0.079 0.765 2.70% 0.0044
13.287 5595.41 18.1 0.188 18.0 15.1 6.54 1.04%Sand-Slime Tailing 0.059 119.0 0.75 0.25 0.50 1 1.48 26.626 370.11 31.09 35 1.09% 2.3 47% 1.39 0.00 1.39 0 0.93 0.06 0.97 1.0 0.052 41.20 72.29 0.102 1.97 0.94 0.32 0.80 0.80 1.12 1.0 0.037 1.96 60.82 0.101 4.19 3.08 2 7.63 460 1.8E-03 3.9E+02 3.5E-04 10 0.221 7062 0.10% 2.00 0.65 0.03% 0.018 0.34 0.079 0.765 2.74% 0.0045
13.451 5595.25 14.3 0.276 14.2 17.2 7.45 1.93%Sand-Slime Tailing 0.059 119.0 0.76 0.26 0.50 1 1.50 21.326 296.43 24.96 27 2.03% 2.5 47% 1.40 0.00 1.40 0 0.93 0.06 0.97 1.0 0.052 39.05 64.01 0.092 1.77 0.94 0.29 0.80 0.80 1.11 1.0 0.037 3.03 75.54 0.120 4.94 3.36 2 7.68 460 1.8E-03 3.9E+02 3.5E-04 10 0.221 7041 0.10% 2.00 0.65 0.03% 0.018 0.34 0.079 0.765 2.78% 0.0046
13.615 5595.08 12.3 0.228 12.1 23.3 10.08 1.86%Sand-Slime Tailing 0.059 119.0 0.77 0.26 0.51 1 1.51 18.270 253.95 21.47 23 1.98% 2.6 47% 1.41 0.00 1.41 0 0.93 0.05 0.97 1.0 0.052 37.83 59.31 0.087 1.67 0.94 0.27 0.80 0.80 1.11 1.0 0.037 3.35 71.88 0.115 4.67 3.17 2 7.73 460 1.8E-03 3.9E+02 3.5E-04 10 0.222 7021 0.10% 2.00 0.65 0.03% 0.018 0.34 0.079 0.765 2.82% 0.0046
13.779 5594.92 10.8 0.190 10.7 27.0 11.70 1.75%Sand-Slime Tailing 0.059 119.0 0.78 0.27 0.51 1 1.50 15.970 221.98 18.84 20 1.89% 2.6 47% 1.42 0.00 1.42 0 0.92 0.05 0.97 1.0 0.052 36.91 55.75 0.083 1.60 0.94 0.25 0.80 0.80 1.11 1.0 0.037 3.60 67.84 0.109 4.41 3.00 2 7.78 460 1.8E-03 3.9E+02 3.5E-04 10 0.222 7001 0.11% 2.00 0.65 0.03% 0.019 0.34 0.079 0.765 2.86% 0.0047
13.943 5594.76 8.0 0.181 7.7 47.3 20.48 2.26%Slime Tailings 0.057 113.1 0.79 0.27 0.52 1 1.49 11.507 159.95 13.88 14 2.50% 2.8 71% 1.43 0.00 1.43 0 0.92 0.05 0.98 1.0 0.052 34.92 48.80 0.076 1.47 0.94 0.22 0.80 0.80 1.11 1.0 0.037 5.07 70.29 0.112 4.51 2.99 2 7.83 460 1.8E-03 3.7E+02 3.7E-04 16 0.474 5753 0.13% 2.00 0.65 0.03% 0.022 0.34 0.079 0.765 3.41% 0.0056
14.107 5594.59 10.0 0.115 9.6 60.9 26.40 1.15%Sand-Slime Tailing 0.059 119.0 0.80 0.28 0.52 1 1.48 14.251 198.09 17.20 18 1.25% 2.6 47% 1.44 0.00 1.44 0 0.92 0.05 0.97 1.0 0.052 36.34 53.54 0.081 1.56 0.94 0.24 0.80 0.80 1.11 1.0 0.037 3.23 55.51 0.096 3.82 2.69 2 7.88 460 1.8E-03 3.9E+02 3.6E-04 10 0.223 6962 0.11% 2.00 0.65 0.03% 0.019 0.34 0.079 0.765 2.93% 0.0048
14.271 5594.43 12.7 0.137 12.5 34.5 14.95 1.08%Sand-Slime Tailing 0.059 119.0 0.81 0.28 0.53 1 1.46 18.326 254.73 21.65 23 1.15% 2.5 47% 1.45 0.00 1.45 0 0.92 0.05 0.97 1.0 0.052 37.89 59.55 0.087 1.69 0.94 0.27 0.80 0.80 1.10 1.0 0.038 2.64 57.06 0.097 3.84 2.76 2 7.93 460 1.8E-03 3.9E+02 3.6E-04 10 0.223 6943 0.11% 2.00 0.65 0.03% 0.019 0.34 0.079 0.765 2.97% 0.0049
14.436 5594.26 8.1 0.129 7.9 39.8 17.23 1.59%Slime Tailings 0.057 113.1 0.82 0.29 0.53 1 1.46 11.483 159.62 13.76 14 1.77% 2.8 71% 1.46 0.00 1.46 0 0.92 0.05 0.97 1.0 0.052 34.88 48.64 0.076 1.47 0.94 0.21 0.80 0.80 1.10 1.0 0.038 4.42 60.74 0.101 3.95 2.71 2 7.98 460 1.8E-03 3.7E+02 3.8E-04 16 0.475 5706 0.13% 2.00 0.65 0.03% 0.023 0.34 0.079 0.765 3.53% 0.0058
14.600 5594.10 6.3 0.101 6.0 61.5 26.64 1.59%Slime Tailings 0.057 113.1 0.83 0.29 0.54 1 1.45 8.629 119.94 10.67 10 1.83% 2.9 71% 1.47 0.00 1.47 0 0.92 0.05 0.98 1.0 0.052 33.80 44.47 0.072 1.40 0.94 0.19 0.80 0.80 1.10 1.0 0.038 5.42 57.80 0.098 3.81 2.60 2 8.03 500 1.8E-03 4.4E+02 3.3E-04 16 0.475 5691 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.43% 0.0040
14.764 5593.94 6.0 0.095 5.6 71.3 30.89 1.58%Slime Tailings 0.057 113.1 0.84 0.30 0.54 1 1.44 8.029 111.61 10.07 10 1.83% 2.9 71% 1.47 0.00 1.47 0 0.92 0.05 0.98 1.0 0.052 33.59 43.67 0.072 1.39 0.94 0.18 0.80 0.80 1.10 1.0 0.038 5.66 57.05 0.097 3.75 2.57 2 8.08 500 1.8E-03 4.4E+02 3.3E-04 16 0.475 5676 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.46% 0.0040
14.928 5593.77 5.9 0.056 5.5 66.0 28.61 0.95%Slime Tailings 0.057 113.1 0.85 0.30 0.54 1 1.43 7.895 109.74 9.86 9 1.10% 2.8 71% 1.48 0.00 1.48 0 0.92 0.05 0.98 1.0 0.052 33.52 43.38 0.071 1.38 0.94 0.18 0.80 0.80 1.10 1.0 0.038 4.79 47.20 0.089 3.42 2.40 2 8.13 500 1.8E-03 4.4E+02 3.3E-04 16 0.476 5661 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.49% 0.0041
15.092 5593.61 6.8 0.056 6.5 47.2 20.44 0.82%Sand-Slime Tailing 0.059 119.0 0.86 0.31 0.55 1 1.42 9.295 129.20 11.28 11 0.94% 2.7 47% 1.49 0.00 1.49 0 0.91 0.05 0.97 1.0 0.052 34.26 45.54 0.073 1.42 0.94 0.19 0.80 0.80 1.09 1.0 0.038 4.07 45.87 0.088 3.35 2.39 2 8.18 500 1.8E-03 4.6E+02 3.2E-04 10 0.225 6852 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.07% 0.0034
15.256 5593.44 9.0 0.056 8.7 40.6 17.59 0.63%Sand-Slime Tailing 0.059 119.0 0.87 0.31 0.55 1 1.41 12.302 171.00 14.70 15 0.69% 2.5 47% 1.50 0.00 1.50 0 0.91 0.05 0.97 1.0 0.051 35.46 50.16 0.078 1.51 0.94 0.22 0.80 0.80 1.09 1.0 0.038 2.96 43.56 0.086 3.25 2.38 2 8.23 500 1.8E-03 4.6E+02 3.2E-04 10 0.225 6833 0.08% 2.00 0.65 0.03% 0.014 0.34 0.079 0.765 2.10% 0.0034
23.070 5585.63 Sand-Slime Tailing 0.059 119.0 1.97 0.03 1.93 1 10.61 538 1.8E-03 5.3E+02 3.6E-04 10 0.240 6155 0.09% 2.00 0.65 0.03% 0.016 0.34 0.079 0.765 2.52% 0.1971
Extra layer added to analyze seismic settlement of tailings below the bottom of CPT investigation.
ab
Threshhol
d Shear Strain, γtv
(%)
Volumetri
c Strain at
15 Cycles,
εc-15 (%)Rc
Seismic Settlement Analysis - Stewart et al (2004)
CN
Volumetric
Strain for
Design
Event, εv (%)
Incremental Consolidation (ft)
Midpoint Depth at t1, z1
Shear Wave Velocity, Vs
Soil Density, ρ (tcf)
Max Shear
Strain
Modulus,
Gmax (tsf)
P = γeff*(Geff
/Gmax)
(tsf)
Plasticity Index, PI g1 g2
Shear Strain, γ (%)
CN
Volumetric Strain for Design Event, εv (%)
Incrementa
l Consolidation (ft)Depth at t1, z1
Soil Density, ρ
Maximum Shear Strain
Modulus,
Gmax
P =
γeff*(Geff/Gmax)
Plastici
ty Index, PI g1 g2
Shear
Strain, γ ab
Threshhol
d Shear
Strain, γtv (%)
Volumetric Strain at 15 Cycles, εc-15 (%)Rc
TOTAL SEISMIC SETTLEMENT (FT):
Equil Pore Pressure at Midpoint of Layer (tsf)
Effective Stress at Bottom of Layer
Effective Stress at Midpoint of Layer FINAL COVER
Erosion Protection Layer
Unit Weight (tcf)
Unit Weight (pcf)
Total Stress at Bottom of Layer
Total Stress at Midpoint of Layer
Equil Pore Pressure at Bottom of Layer
Youd et al. (2001)Type Index,
Ic FC
Total Stress at t1
Water Storage/Rooting Zone Layer
High Compaction Layer
Platform/Random Fill Layer
FoS
Cyclic Stress Ratio
FoS
CSR
M=7.5,
s'v=1atm
∆qc1n qc1n-cs
(CRR)
M=7.5,
s'v=1atm
CSR
M=7.5,
s'v=1atm
Kc qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Scaling Factor for stress ration, rm
Volumetric Strain Ratio for Site-Specific Design Earth
Equiv. Number of Uniform Strain Cycles, N
Pw (u2)Pw (u2)
2013 CPT Data from ConeTec CPT Data Interpretations
fs/qt
Material
Type (as determined by fines
Unit Weight Unit Weight
Total
Stress
at time of CPT
Depth
at time of CPT Elevation qt fs qc
Effective
Stress at
time of CPT
Saturated
at time of CPT
Idriss and Boulanger (2008)
Max. Horiz. Acceleration, Amax/g:
Earthquake Moment Magnitude, M:
Magnitude Scaling Factor, MSF:
WHITE MESA TAILINGS REPOSITORY LIQUEFACTION AND SEISMIC SETTLEMENT ANALYSES - 3-8S Elev. at Top of Layer (ft)
Elev. At Midpoint of Layer (ft)
Elev. At Bottom of Layer
Thickness of Layer (ft)
Youd, et al (2001)
Shear Wave Velocity, Vs
Max. Horiz. Acceleration, Amax/g: 0.15
Earthquake Moment Magnitude, M: 5.5
Magnitude Scaling Factor, MSF:
Equil
Pore
Pressure at time of
Conditions at t1 Liquefaction Triggering AnalysesEquil
Pore Pressure at t1CN qc1 qc1 qc1N
Normalized
Cone
Penetration Resistance, Qt
Normalize
d Friction
Ratio, Fr (%) Liquefiable?1=Yes
2=No
Cyclic Stress Ratio Cyclic Resistance Ratio
Effective Stress at t1
Saturated at t1
Idriss & Boulanger (2008)
Liquef_SeismicSettle_30Aug2015.xls Page 29 of 29

Updated Tailings Cover Design Report

ATTACHMENT F.4
LIQUEFACTION CALCULATIONS
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Liquefaction Analysis
Notes t0 corresponds to beginning of final cover placement Assumes 99% of consolidation due to existing stress conditions has taken place
t1 corresponds to dewatering of the tailings to a level 5 feet above the liner
t2 corresponds to completion of dewatering
TAILINGS
2.70 Specific gravity of tailing sands, G s-TSand Based on testing performed on other uranium tailings and presented in Keshian and Rager (1988)
2.80 Specific gravity of tailing sand-slimes, Gs-TS-S Average value from lab testing of samples obtained on-site (Tailings Data Analysis Report. MWH, 2015b)
2.86 Specific gravity of tailing slimes, Gs-TSlime Average value from lab testing of samples obtained on-site (Tailings Data Analysis Report. MWH, 2015b)
18% Fines content of tailings sands (%) Average value from lab testing of samples obtained on-site (Tailings Data Analysis Report. MWH, 2015b)
47% Fines content of tailings sand-slimes (%) Average value from lab testing of samples obtained on-site (Tailings Data Analysis Report. MWH, 2015b)
71% Fines content of tailings slimes (%) Average value from lab testing of samples obtained on-site (Tailings Data Analysis Report. MWH, 2015b)
97 In-situ dry unit weight of tailings sands at t0, γd0-Tsand (pcf)Average value from lab testing of samples obtained on-site (Tailings Data Analysis Report. MWH, 2015b)
88 In-situ dry unit weight of tailings sand-slimes at t0, γd0-TS-S (pcf)Average value from lab testing of samples obtained on-site (Tailings Data Analysis Report. MWH, 2015b)
78 In-situ dry unit weight of tailings slimes at t0, γd0-Tslime (pcf)Average value from lab testing of samples obtained on-site (Tailings Data Analysis Report. MWH, 2015b)
123 In-situ saturated unit weight of tailings sands at t0, γsat0-Tsand (pcf)Calculated
119 In-situ saturated unit weight of tailings sand-slimes at t0, γsat0-TS-S (pcf)Calculated
113 In-situ saturated unit weight of tailings slimes at t0, γsat0-Tslime (pcf)Calculated
103 Moist unit weight of tailings sands, γm-Tsand (pcf)Calculated, assuming long-term water content from laboratory testing (Tailings Data Analysis Report. MWH, 2015b)
93 Moist unit weight of tailings sand-slimes, γm-TS-S (pcf)Calculated, assuming long-term water content from laboratory testing (Tailings Data Analysis Report. MWH, 2015b)
83 Moist unit weight of tailings slimes, γm-Tslime (pcf)Calculated, assuming long-term water content from laboratory testing (Tailings Data Analysis Report. MWH, 2015b)
0.74 Void ratio of tailing sands at t0, e0-TSand Calculated
0.99 Void ratio of tailing sand-slimes at t0, e0-TS-S Calculated
1.29 Void ratio of tailing slimes at t0, e0-TSlime Calculated
27%Saturated water content of tailings sands at t0, wsat0-TSand (%)Calculated
35%Saturated water content of tailings sand-slimes at t0, wsat0-TS-S (%)Calculated
45%Saturated water content of tailings slimes at t0, wsat0-TSlime (%)Calculated
6%Water content of moist tailings sands, wm-TSand (%)From Attachment H - Radon Emanation Modeling including with this submittal
6%Water content of moist tailings sand-slimes, wm-TS-S (%)From Attachment H - Radon Emanation Modeling including with this submittal
6%Water content of moist tailings slimes, wm-TSlime (%)From Attachment H - Radon Emanation Modeling including with this submittal
0 Plasticity index of tailings sands, PITSand Average value from lab testing of samples obtained on-site (Tailings Data Analysis Report. MWH, 2015b)
10 Plasticity index of tailings sand-slimes, PITS-S Average value from lab testing of samples obtained on-site (Tailings Data Analysis Report. MWH, 2015b)
16 Plasticity index of tailings slimes, PITSlime Average value from lab testing of samples obtained on-site (Tailings Data Analysis Report. MWH, 2015b)
2.2 Coefficient "a" of Unsaturated Sand Tailings From Stewart, et al (2004), page 86, Figure 6.5
5.0 Coefficient "a" of Saturated Sand Tailings From Stewart, et al (2004), page 86, Figure 6.5
2.0 Coefficient "a" of Sand-Slime Tailings From Stewart, et al (2004), page 89, Figure 6.7
2.0 Coefficient "a" of Slime Tailings From Stewart, et al (2004), page 89, Figure 6.7
1.00 Coefficient "b" of Sand Tailings From Stewart, et al (2004), page 86, Figure 6.5
0.65 Coefficient "b" of Sand-Slime Tailings From Stewart, et al (2004), page 89, Figure 6.7
0.65 Coefficient "b" of Slime Tailings From Stewart, et al (2004), page 89, Figure 6.7
0.01% Strain threshold value of Sand Tailings, γtv From Stewart, et al (2004), page 86, Figure 6.5
0.03% Strain threshold value of Sand-Slime Tailings, γtv From Stewart, et al (2004), page 89, Figure 6.7
0.03% Strain threshold value of Slime Tailings, γtv From Stewart, et al (2004), page 89, Figure 6.7
0.36 Coefficient "R" of Sand Tailings From Stewart, et al (2004), page 86, for soils with non-plastic fines
0.34 Coefficient "R" of Sand-Slime Tailings From Stewart, et al (2004), page 89, for soils with medium plasticity fines
0.34 Coefficient "R" of Slime Tailings From Stewart, et al (2004), page 89, for soils with medium plasticity fines
Moist Unit Weight, γm
SOIL PROPERTIES
Specific Gravity, Gs
Fines Content
Dry Unit Weight, γd
Saturated Unit Weight, γsat
Void Ratio, e
Saturated Water Content, wSat
Water Content of Moist Tailings, wm-T
Seismic Settlement Coefficients
Plasticity Index, PI
Liquef_SeismicSettle_30Aug2015.xls Page 1 of 36
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Liquefaction Analysis
5.0 Height of water table above liner at t1, Hsat-1 (ft)Assumed for end of active maintenance
0.0 Height of water table above liner at t2, Hsat-2 (ft)
6.0%Long-term moisture content of tailings, wtailings (%)From Attachment H - Radon Emanation Modeling including with this submittal
508 Shear Wave Velocity of Tailings, Vs (ft/sec)Conservatively assumed to be the average of the shear wave velocities measured in Cell 2 tailings
2.61 Specific gravity of topsoil, Gs-Topsoil From Attachment H - Radon Emanation Modeling including with this submittal
2.62 Specific gravity of rock mulch, Gs-mulch From Attachment H - Radon Emanation Modeling including with this submittal
2.63 Specific gravity of cover soil, Gs-cover From Attachment H - Radon Emanation Modeling including with this submittal
118.0 Maximum dry unit weight of cover soil γcover-max (pcf)Average calculated from laboratory testing results (UWM, 2012)
100.7 Moist unit weight of cover soil at 80% relative compaction, γcover80(pcf)Calculated
107.0 Moist unit weight of cover soil at 85% relative compaction, γcover85(pcf)Calculated
119.6 Moist unit weight of cover soil at 95% relative compaction, γcover95(pcf)Calculated
100 Dry unit weight of topsoil layer at 85% relative compaction, γtopsoil5 (pcf)From Attachment H - Radon Emanation Modeling including with this submittal
105 Moist unit weight of topsoil layer at 85% relative compaction, γtopsoil5(pcf)Calculated
106 Dry unit weight of rock mulch layer at 85% relative compaction, γmulch85(pcf)Calculated
110 Moist unit weight of rock mulch layer at 85% relative compaction, γmulch85 (pcf)From Attachment H - Radon Emanation Modeling including with this submittal
0.74 Void Ratio of cover soil at 80% relative compaction, ecover80 Calculated
0.64 Void Ratio of cover soil at 85% relative compaction, ecover85 Calculated
0.46 Void Ratio of cover soil at 95% relative compaction, ecover95 Calculated
0.61 Void Ratio of topsoil at 85% relative compaction, etopsoil85 Calculated from porosity presented in Attachment H - Radon Emanation Modeling including with this submittal
0.54 Void Ratio of rock mulch at 85% relative compaction, emulch85 Calculated from porosity presented in Attachment H - Radon Emanation Modeling including with this submittal
1.2 Coefficient "a" of Erosion Protection/Topsoil Cover From Stewart, et al (2004), page 88, Figure 6.6
2.0 Coefficient "a" of General Cover Soil From Stewart, et al (2004), page 89, Figure 6.7
0.65 Coefficient "a" of High-Compaction Layer From Stewart, et al (2004), page 89, Figure 6.7
0.80 Coefficient "b" of Erosion Protection/Topsoil Cover From Stewart, et al (2004), page 88, Figure 6.6
0.65 Coefficient "b" of General Cover Soil From Stewart, et al (2004), page 89, Figure 6.7
0.75 Coefficient "b" of High-Compaction Layer From Stewart, et al (2004), page 89, Figure 6.7
0.04% Strain threshold value of Erosion Protection/Topsoil Cover, γtv From Stewart, et al (2004), page 88, Figure 6.6
0.03% Strain threshold value of General Cover Soil, γtv From Stewart, et al (2004), page 89, Figure 6.7
0.02% Strain threshold value of High-Compaction Layer, γtv From Stewart, et al (2004), page 89, Figure 6.7
0.32 Coefficient "R" of Erosion Protection/Topsoil Cover From Stewart, et al (2004), page 88, for soils with low plasticity fines
0.34 Coefficient "R" of General Cover Soil From Stewart, et al (2004), page 89, for soils with medium plasticity fines
0.34 Coefficient "R" of High-Compaction Layer From Stewart, et al (2004), page 89, for soils with medium plasticity fines
6.7%Long-term moisture content of cover soil, wcover (%)Estimated based on measured 15bar water content. (UWM, 2012)
5.2%Long-term moisture content of topsoil, wtopsoil (%)From Attachment H - Radon Emanation Modeling including with this submittal
4.0%Long-term moisture content of rock mulch, wrockmulch (%)From Attachment H - Radon Emanation Modeling including with this submittal
0.14 Compression index of cover soil, Cc-cover Calculated from empirical equation presented in Holtz and Kovacs, 1981. Page 341. C c= 0.30*(e0-0.27)
51% Fines content of cover soil (%) Mean value from laboratory analyses presented in previous response to interrogatories (EFRI, 2012)
11 Plasticity Index of cover soil, PI Weighted Average from 2010 and 2012 laboratory testing (laboratory results presented in EFRI, 2012)508 Shear Wave Velocity of Cover Soil, Vs (ft/sec)Conservatively assumed to be the average of the shear wave velocities measured in Cell 2 tailings
0.15 Maximum horizontal acceleration at the ground surface, amax/g From Probabilistic Seismic Hazard Analysis (MWH, 2015a)
5.5 Magnitude of Design Event, M From Probabilistic Seismic Hazard Analysis (MWH, 2015a)
20 Site-Source Distance, r (km) From Probabilistic Seismic Hazard Analysis (MWH, 2015a)
1.00 Stress reduction factor, rd Conservatively assumed.
7.51 Equiv. Number of Uniform Strain Cycles, N Calculated from Stewart, et al (2004), Equation 6.11, page 79, S parameter =0 since shallow soil and rock underlie the tailings (<20m) below tailings
594 Average shear wave velocity for cover, Vs (ft/s) Conservatively estimated as upper bound average Vs for tailings in Cell 2 in October 2013 (Tailings Data Analysis Report. MWH, 2015b)
495 Average shear wave velocity for tailings (3' - 9.4'), Vs (ft/s) Conservatively estimated as average Vs over depth range for tailings in Cell 2 in October 2013 (Tailings Data Analysis Report. MWH, 2015b)
460 Average shear wave velocity for tailings (9.4' - 14.4'), Vs (ft/s) Conservatively estimated as average Vs over depth range for tailings in Cell 2 in October 2013 (Tailings Data Analysis Report. MWH, 2015b)
500 Average shear wave velocity for tailings (14.4' - 19.6'), Vs (ft/s) Conservatively estimated as average Vs over depth range for tailings in Cell 2 in October 2013 (Tailings Data Analysis Report. MWH, 2015b)
538 Average shear wave velocity for tailings (19.6' - 24.7'), Vs (ft/s) Conservatively estimated as average Vs over depth range for tailings in Cell 2 in October 2013 (Tailings Data Analysis Report. MWH, 2015b)
594 Average shear wave velocity for tailings (24.7' - liner), Vs (ft/s) Conservatively estimated as average Vs over depth range for tailings in Cell 2 in October 2013 (Tailings Data Analysis Report. MWH, 2015b)
62.4 Unit Weight of Water, γW
82.4 Atmospheric Pressure, Pa (kPa)Calculated assuming elev=5600' amsl. http://www.engineeringtoolbox.com/air-altitude-pressure-d_462.html
1722.0 Atmospheric Pressure, Pa (psf)Unit conversion calculation
MISCELLANEOUS PARAMETERS
Seismic Settlement Coefficients
SEISMIC PARAMETERS
Other
COVER SOILSpecific Gravity, Gs
Unit Weight, γ
Void Ratio, e
Other
Liquef_SeismicSettle_30Aug2015.xls Page 2 of 36
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Liquefaction Analysis
REFERENCES
Energy Fuels Resources (USA) Inc. (EFRI), 2012. Responses to Interrogatories – Round 1 for Reclamation Plan,
Revision 5.0, March 2012. August 15.
Holtz, R.D. and Kovacs, W.D., 1981. An Introduction to Geotechnical Engineering. Prentice Hall, Inc. New Jersey
Keshian, B., and Rager, R. 1988. Geotechnical Properties of Hydraulically Placed Uranium Mill Tailings, in Hydraulically
Fill Structures, Geotechnical Special Publication No. 21, Eds. Van Zyl, D., and Vick, S., ASCE, August
MWH Americas, Inc. (MWH), 2015a. White Mesa Mill Probabilistic Seismic Hazard Analysis Report. Prepared for
Energy Fuels Resources (USA) Inc. April.
MWH Americas, Inc. (MWH), 2015b. White Mesa Mill Tailings Data Analysis Report. Prepared for Energy Fuels
Resources (USA) Inc. April.
Stewart, J.P., D. Whang, M.Moyneur, and P.Duku, 2004. Seismic Compression of As-Compacted Fill Soils With Variable
Levels of Fines Content and Fines Plasticity. CUREE Publication No.EDA-05. July.
Terzaghi, K., R. Peck, and G. Mesri, 1996. Soil Mechanics in Engineering Practice, Third Edition. John Wiley and Sons,
Inc. New York
University of Wisconsin-Madison (UWM), Wisconsin Geotechnics Laboratory, 2012. Compaction and Hydraulic
Properties of Soils from Banding, Utah. Geotechnics Report NO. 12-41 by C.H. Benson and X. Wang. July 24.
Liquef_SeismicSettle_30Aug2015.xls Page 3 of 36
Energy Fuels Resources (USA) Inc.
White Mesa MillLiquefaction Analyses
Data File: 13-52106_SP2W2-BSC-CPT 5613.10 Water surface elevation during CPT investigation (ft a5615.85 Ground Surface Elevation at time of CPT (ft amsl)Location: White Mesa 2013 CPT Investigation 0.15 5607.57 Water surface elevation at t0 (ft amsl)5625.87 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl)
..\..\..\6.2.3 Field Data\2013 Field Investigation\Conetec Dat 5.5 5598.51 Water surface elevation at t1 (ft amsl) 0.50 Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after pla ###### 5625.62 5625.37 0.50 0.055 110 0.028 0.014 0.00 0.00 0.028 0.014
Tailings Sands 1.69 5593.51 Water surface elevation at t2 (ft amsl)3.50 Thickness of Water Storage/Rooting Zone (ft) ###### 5623.62 5621.87 3.50 0.054 107 0.215 0.121 0.00 0.00 0.215 0.121
Tailings Sand-Slimes 4.00 Thickness of High Compaction Layer (ft)###### 5619.87 5617.87 4.00 0.060 120 0.454 0.334 0.00 0.00 0.454 0.334
Tailings Slimes 1.44 2.02 Thickness of Random/Platform Fill on on top of existing interim cover (ft) ###### 5616.86 5615.85 2.02 0.050 101 0.556 0.505 0.00 0.00 0.556 0.505
Interim Cover 0.47 1111.60 Additional Stress due to Final Cover Placement, ΔσFC (psf)
Cells Requiring User Input/Manipulation 2.21 2.21 7.51 5593.51 Elevation of bottom of tailings (liner) (ft amsl)
rd Cσ Kσ Ka rd Dr f Kσ Ka Avg CN qc1 qc1 qc1N
(ft) (ft amsl) TSF TSF TSF (ft) PSI (%) (tcf) (pcf) (tsf)(tsf)(tsf) 1=Yes TSF MPa % (tsf)(tsf)(tsf) 1=Yes FoS TSF MPa
0=No 0=No
0.164 5615.69 19.0 0.292 19.0 2.8 1.22 1.53%Interim Cover 0.050 100.7 0.01 0.00 0.01 0 1.70 32.317 449.21 37.57 2302 1.54% 1.4 51% 0.56 0.00 0.56 0 1.00 0.06 1.03 1.0 0.059 43.50 81.07 0.114 1.92 0.98 0.35 0.80 2.53 1.0 0.017 1.00 37.57 0.081 196.84 99.38 2 1.7 32.347 3.0969 37.569
0.328 5615.52 27.6 0.767 27.6 3.0 1.32 2.78%Interim Cover 0.050 100.7 0.02 0.00 0.02 0 1.70 46.937 652.42 54.55 1671 2.78% 1.7 51% 0.57 0.00 0.57 0 1.00 0.07 1.03 1.0 0.060 49.46 104.02 0.149 2.51 0.98 0.43 0.79 2.32 1.0 0.019 1.03 55.95 0.096 116.62 59.56 2 1.7 46.969 4.4968 54.552
0.492 5615.36 63.0 1.250 63.0 2.6 1.13 1.98%Interim Cover 0.050 100.7 0.02 0.00 0.02 0 1.70 107.100 ###### 124.42 2542 1.98% 1.5 51% 0.58 0.00 0.58 0 1.00 0.13 1.05 1.0 0.061 73.98 198.41 1.000 16.46 0.98 0.64 0.68 3.13 1.0 0.014 1.00 124.42 0.259 209.31 112.89 2 1.7 107.13 10.256 124.422
0.656 5615.19 130.6 1.407 130.6 1.2 0.53 1.08%Interim Cover 0.050 100.7 0.03 0.00 0.03 0 1.70 221.952 ###### 257.80 3950 1.08% 1.3 51% 0.59 0.00 0.59 0 1.00 0.30 1.10 1.0 0.064 120.79 378.59 1.000 15.73 0.98 0.93 0.60 3.68 1.0 0.012 1.00 257.80 1.000 606.04 310.88 2 1.7 221.97 21.251 257.799
0.820 5615.03 202.3 0.922 202.3 2.2 0.96 0.46%Interim Cover 0.050 100.7 0.04 0.00 0.04 0 1.70 343.859 ###### 399.40 4896 0.46% 0.9 51% 0.60 0.00 0.60 0 1.00 0.30 1.10 1.0 0.064 170.48 569.88 1.000 15.73 0.97 1.15 0.60 3.37 1.0 0.013 1.00 399.40 1.000 485.02 250.37 2 1.7 343.88 32.923 399.399
0.984 5614.87 189.1 1.391 189.0 4.1 1.77 0.74%Interim Cover 0.050 100.7 0.05 0.00 0.05 0 1.70 321.351 ###### 373.28 3813 0.74% 1.1 51% 0.61 0.00 0.61 0 1.00 0.30 1.10 1.0 0.064 161.32 534.60 1.000 15.73 0.97 1.12 0.60 3.13 1.0 0.014 1.00 373.28 1.000 404.34 210.03 2 1.7 321.39 30.77 373.280
1.148 5614.70 207.8 1.514 207.8 0.1 0.04 0.73%Interim Cover 0.050 100.7 0.06 0.00 0.06 0 1.70 353.311 ###### 410.35 3593 0.73% 1.1 51% 0.61 0.00 0.61 0 1.00 0.30 1.10 1.0 0.064 174.33 584.68 1.000 15.73 0.97 1.17 0.60 2.95 1.0 0.015 1.00 410.35 1.000 346.72 181.22 2 1.7 353.31 33.826 410.351
1.312 5614.54 81.3 1.745 81.3 0.7 0.29 2.15%Interim Cover 0.050 100.7 0.07 0.00 0.07 0 1.70 138.142 ###### 160.45 1229 2.15% 1.6 51% 0.62 0.00 0.62 0 1.00 0.18 1.06 1.0 0.061 86.63 247.08 1.000 16.36 0.97 0.73 0.63 2.56 1.0 0.017 1.00 160.45 1.000 303.50 159.93 2 1.7 138.15 13.226 160.452
1.476 5614.37 52.5 1.382 52.5 -0.3 -0.14 2.63%Interim Cover 0.050 100.7 0.07 0.00 0.07 0 1.70 89.284 ###### 103.69 705 2.64% 1.8 51% 0.63 0.00 0.63 0 1.00 0.11 1.03 1.0 0.060 66.71 170.40 0.412 6.88 0.97 0.59 0.71 2.05 1.0 0.021 1.07 111.44 0.209 56.33 31.61 2 1.7 89.281 8.5477 103.694
1.640 5614.21 40.7 1.041 40.7 0.1 0.02 2.56%Interim Cover 0.050 100.7 0.08 0.00 0.08 0 1.70 69.241 962.45 80.42 492 2.56% 1.8 51% 0.64 0.00 0.64 0 1.00 0.09 1.03 1.0 0.059 58.54 138.96 0.229 3.86 0.97 0.52 0.74 1.83 1.0 0.023 1.11 89.28 0.146 35.52 19.69 2 1.7 69.242 6.6292 80.420
1.804 5614.05 34.3 0.916 34.3 -0.7 -0.29 2.67%Interim Cover 0.050 100.7 0.09 0.00 0.09 0 1.70 58.310 810.51 67.72 376 2.68% 1.9 51% 0.65 0.00 0.65 0 1.00 0.08 1.02 1.0 0.059 54.08 121.80 0.183 3.10 0.97 0.48 0.76 1.71 1.0 0.025 1.17 78.96 0.126 27.80 15.45 2 1.7 58.303 5.5819 67.715
1.968 5613.88 64.5 1.005 64.5 0.8 0.33 1.56%Interim Cover 0.050 100.7 0.10 0.00 0.10 0 1.70 109.582 ###### 127.28 649 1.56% 1.6 51% 0.65 0.00 0.65 0 1.00 0.13 1.04 1.0 0.060 74.99 202.27 1.000 16.71 0.97 0.65 0.67 2.02 1.0 0.021 1.00 127.28 0.272 55.07 35.89 2 1.7 109.59 10.492 127.282
2.133 5613.72 88.7 1.082 88.7 0.0 0.00 1.22%Interim Cover 0.050 100.7 0.11 0.00 0.11 0 1.70 150.858 ###### 175.21 825 1.22% 1.4 51% 0.66 0.00 0.66 0 1.00 0.20 1.05 1.0 0.061 91.81 267.02 1.000 16.46 0.97 0.76 0.62 2.22 1.0 0.019 1.00 175.21 1.000 187.13 101.80 2 1.7 150.86 14.443 175.213
2.297 5613.55 88.1 1.355 88.1 0.0 0.00 1.54%Interim Cover 0.050 100.7 0.12 0.00 0.12 0 1.70 149.685 ###### 173.85 760 1.54% 1.5 51% 0.67 0.00 0.67 0 1.00 0.20 1.05 1.0 0.061 91.33 265.18 1.000 16.52 0.97 0.76 0.62 2.15 1.0 0.020 1.00 173.85 1.000 173.84 95.18 2 1.7 149.69 14.331 173.850
2.461 5613.39 81.2 1.017 81.2 0.2 0.08 1.25%Interim Cover 0.050 100.7 0.12 0.00 0.12 0 1.70 138.091 ###### 160.39 655 1.25% 1.5 51% 0.68 0.00 0.68 0 1.00 0.18 1.04 1.0 0.060 86.61 246.99 1.000 16.67 0.97 0.73 0.63 2.03 1.0 0.021 1.00 160.39 1.000 162.31 89.49 2 1.7 138.09 13.221 160.387
2.625 5613.23 71.1 0.910 71.1 0.7 0.32 1.28%Interim Cover 0.050 100.7 0.13 0.00 0.13 0 1.70 120.887 ###### 140.41 537 1.28% 1.5 51% 0.69 0.00 0.69 0 1.00 0.15 1.03 1.0 0.059 79.60 220.01 1.000 16.82 0.97 0.68 0.66 1.90 1.0 0.023 1.00 140.41 0.337 51.37 34.09 2 1.7 120.89 11.574 140.412
2.789 5613.06 61.0 0.753 61.0 -0.9 -0.37 1.24%Interim Cover 0.050 100.7 0.14 0.00 0.14 1 1.70 103.632 ###### 120.35 437 1.24% 1.6 51% 0.70 0.00 0.70 0 0.99 0.12 1.03 1.0 0.059 72.56 192.91 0.840 14.23 0.97 0.63 0.68 1.78 1.0 0.024 1.00 120.35 0.242 35.00 24.61 2 1.7 103.62 9.9209 120.352
2.953 5612.90 57.1 0.690 57.1 -0.9 -0.37 1.21%Interim Cover 0.050 100.7 0.15 0.01 0.14 1 1.70 97.036 ###### 112.69 400 1.21% 1.6 51% 0.70 0.00 0.70 0 0.99 0.12 1.02 1.0 0.059 69.87 182.56 0.580 9.86 0.97 0.61 0.69 1.74 1.0 0.025 1.00 112.69 0.213 30.14 20.00 2 1.7 97.027 9.2894 112.691
3.117 5612.73 50.5 0.655 50.5 -0.1 -0.05 1.30%Interim Cover 0.050 100.7 0.16 0.01 0.15 1 1.70 85.782 ###### 99.63 346 1.30% 1.6 51% 0.71 0.00 0.71 0 0.99 0.11 1.02 1.0 0.059 65.28 164.91 0.362 6.18 0.97 0.58 0.71 1.67 1.0 0.026 1.00 99.63 0.172 23.81 14.99 2 1.7 85.781 8.2126 99.629
3.281 5612.57 52.1 0.800 52.1 -0.1 -0.06 1.53%Sand-Slime Tailing 0.059 119.0 0.17 0.02 0.15 1 1.70 88.604 ###### 102.91 346 1.54% 1.7 47% 0.72 0.00 0.72 0 0.99 0.11 1.02 1.0 0.058 66.39 169.30 0.401 6.85 0.97 0.59 0.71 1.67 1.0 0.026 1.03 105.93 0.191 25.57 16.21 2 1.7 88.603 8.4828 102.907
3.445 5612.41 55.0 0.793 55.0 0.1 0.03 1.44%Sand-Slime Tailing 0.059 119.0 0.18 0.02 0.15 1 1.70 93.449 ###### 108.54 354 1.45% 1.7 47% 0.73 0.00 0.73 0 0.99 0.11 1.02 1.0 0.058 68.37 176.90 0.489 8.38 0.97 0.60 0.70 1.68 1.0 0.025 1.01 109.63 0.203 26.38 17.38 2 1.7 93.45 8.9469 108.536
3.609 5612.24 40.3 0.780 40.3 -1.0 -0.44 1.93%Sand-Slime Tailing 0.059 119.0 0.19 0.03 0.16 1 1.70 68.544 952.76 79.60 252 1.94% 1.8 47% 0.74 0.00 0.74 0 0.99 0.09 1.01 1.0 0.058 58.22 137.81 0.225 3.88 0.97 0.52 0.74 1.54 1.0 0.028 1.14 91.09 0.150 19.01 11.45 2 1.7 68.533 6.5614 79.597
3.773 5612.08 31.5 0.543 31.5 0.5 0.23 1.72%Sand-Slime Tailing 0.059 119.0 0.20 0.03 0.16 1 1.70 53.584 744.82 62.24 191 1.73% 1.9 47% 0.75 0.00 0.75 0 0.99 0.08 1.01 1.0 0.058 52.13 114.37 0.168 2.91 0.97 0.46 0.77 1.46 1.0 0.029 1.17 72.98 0.116 14.28 8.59 2 1.7 53.59 5.1307 62.241
3.937 5611.91 30.6 0.621 30.6 -0.2 -0.08 2.03%Sand-Slime Tailing 0.059 119.0 0.21 0.04 0.17 1 1.70 52.088 724.02 60.49 180 2.04% 2.0 47% 0.76 0.00 0.76 0 0.99 0.08 1.01 1.0 0.058 51.52 112.01 0.164 2.84 0.97 0.45 0.78 1.44 1.0 0.030 1.24 75.19 0.120 14.30 8.57 2 1.7 52.086 4.9867 60.495
4.101 5611.75 25.9 0.747 25.9 1.3 0.55 2.89%Sand-Slime Tailing 0.059 119.0 0.22 0.04 0.17 1 1.70 43.962 611.07 51.07 148 2.91% 2.1 47% 0.77 0.00 0.77 0 0.99 0.07 1.01 1.0 0.058 48.21 99.29 0.141 2.46 0.97 0.41 0.79 1.39 1.0 0.031 1.51 76.95 0.122 14.26 8.36 2 1.7 43.975 4.2102 51.075
4.265 5611.58 25.9 0.883 25.9 7.3 3.14 3.41%Slime Tailings 0.057 113.1 0.22 0.05 0.18 1 1.70 43.979 611.31 51.17 145 3.44% 2.2 71% 0.78 0.00 0.78 0 0.99 0.07 1.01 1.0 0.057 47.91 99.07 0.141 2.45 0.97 0.41 0.79 1.39 1.0 0.031 1.64 84.13 0.135 15.41 8.93 2 1.7 44.056 4.2179 51.168
4.429 5611.42 89.9 1.190 89.6 44.0 19.08 1.32%Sand Tailings 0.062 123.5 0.23 0.05 0.18 1 1.70 152.354 ###### 177.49 491 1.33% 1.6 18% 0.79 0.00 0.79 0 0.99 0.21 1.02 1.0 0.058 67.47 244.96 1.000 17.24 0.97 0.77 0.62 1.82 1.0 0.023 1.00 177.49 1.000 110.72 63.98 2 1.7 152.82 14.631 177.493
4.593 5611.26 84.3 1.536 84.2 21.1 9.16 1.82%Sand Tailings 0.062 123.5 0.25 0.06 0.19 1 1.70 143.140 ###### 166.51 448 1.83% 1.7 18% 0.80 0.00 0.80 0 0.98 0.19 1.01 1.0 0.058 64.66 231.17 1.000 17.33 0.97 0.75 0.63 1.76 1.0 0.024 1.03 171.98 1.000 107.80 62.57 2 1.7 143.36 13.726 166.509
4.757 5611.09 45.9 1.208 45.9 6.9 3.00 2.63%Sand-Slime Tailing 0.059 119.0 0.25 0.06 0.19 1 1.70 78.030 ###### 90.71 238 2.64% 2.0 47% 0.81 0.00 0.81 0 0.98 0.10 1.01 1.0 0.057 62.12 152.83 0.285 4.98 0.97 0.55 0.73 1.51 1.0 0.028 1.27 114.89 0.221 23.26 14.12 2 1.7 78.104 7.4776 90.713
4.921 5610.93 20.0 0.909 20.0 1.7 0.72 4.54%Slime Tailings 0.057 113.1 0.26 0.07 0.20 1 1.70 34.051 473.31 39.57 101 4.60% 2.4 71% 0.82 0.00 0.82 0 0.98 0.06 1.00 1.0 0.057 43.87 83.44 0.117 2.06 0.97 0.36 0.80 1.34 1.0 0.032 2.26 89.35 0.146 15.08 8.57 2 1.7 34.069 3.2617 39.569
5.085 5610.76 10.4 0.273 10.4 2.2 0.96 2.62%Slime Tailings 0.057 113.1 0.27 0.07 0.20 1 1.70 17.697 245.99 20.58 51 2.69% 2.4 71% 0.83 0.00 0.83 0 0.98 0.05 1.00 1.0 0.057 37.25 57.84 0.085 1.50 0.96 0.26 0.80 1.34 1.0 0.032 2.38 48.99 0.091 9.17 5.34 2 1.7 17.721 1.6966 20.581
5.249 5610.60 7.0 0.186 7.0 4.3 1.87 2.65%Slime Tailings 0.057 113.1 0.28 0.08 0.20 1 1.70 11.866 164.94 13.83 33 2.77% 2.6 71% 0.84 0.00 0.84 0 0.98 0.05 1.00 1.0 0.057 34.91 48.74 0.076 1.34 0.96 0.21 0.80 1.33 1.0 0.032 3.12 43.13 0.086 8.50 4.92 2 1.7 11.912 1.1404 13.835
5.413 5610.44 5.8 0.170 5.8 4.1 1.77 2.93%Slime Tailings 0.057 113.1 0.29 0.08 0.21 1 1.70 9.809 136.35 11.44 26 3.09% 2.7 71% 0.85 0.00 0.85 0 0.98 0.05 1.00 1.0 0.057 34.07 45.52 0.073 1.29 0.96 0.20 0.80 1.33 1.0 0.032 3.77 43.19 0.086 8.34 4.82 2 1.7 9.8523 0.9433 11.443
5.577 5610.27 5.5 0.100 5.5 4.8 2.09 1.81%Slime Tailings 0.057 113.1 0.30 0.09 0.21 1 1.70 9.367 130.20 10.94 25 1.91% 2.6 71% 0.86 0.00 0.86 0 0.98 0.05 1.00 1.0 0.057 33.90 44.84 0.073 1.28 0.96 0.19 0.80 1.32 1.0 0.032 3.11 34.07 0.078 7.46 4.37 2 1.7 9.4182 0.9017 10.939
5.741 5610.11 10.8 0.134 10.8 6.8 2.96 1.24%Sand-Slime Tailing 0.059 119.0 0.31 0.09 0.22 1 1.70 18.360 255.20 21.41 48 1.27% 2.2 47% 0.87 0.00 0.87 0 0.98 0.05 1.00 1.0 0.057 37.81 59.22 0.087 1.54 0.96 0.27 0.80 1.32 1.0 0.032 1.72 36.93 0.081 7.52 4.53 2 1.7 18.432 1.7647 21.408
5.905 5609.94 7.7 0.162 7.6 3.3 1.43 2.12%Slime Tailings 0.057 113.1 0.32 0.10 0.22 1 1.70 12.971 180.30 15.11 33 2.21% 2.5 71% 0.88 0.00 0.88 0 0.98 0.05 1.00 1.0 0.056 35.35 50.45 0.078 1.38 0.96 0.22 0.80 1.31 1.0 0.032 2.77 41.86 0.085 7.76 4.57 2 1.7 13.006 1.2452 15.106
6.069 5609.78 6.6 0.117 6.6 3.7 1.61 1.76%Slime Tailings 0.057 113.1 0.33 0.10 0.23 1 1.70 11.254 156.43 13.12 28 1.85% 2.5 71% 0.89 0.00 0.89 0 0.98 0.05 1.00 1.0 0.056 34.66 47.77 0.075 1.34 0.96 0.21 0.80 1.31 1.0 0.032 2.83 37.11 0.081 7.27 4.30 2 1.7 11.293 1.0812 13.117
6.234 5609.62 7.5 0.098 7.5 4.8 2.07 1.30%Slime Tailings 0.057 113.1 0.34 0.11 0.23 1 1.70 12.767 177.46 14.89 31 1.36% 2.4 71% 0.89 0.00 0.89 0 0.98 0.05 1.00 1.0 0.056 35.27 50.16 0.078 1.38 0.96 0.22 0.80 1.30 1.0 0.033 2.29 34.07 0.078 6.91 4.15 2 1.7 12.818 1.2272 14.887
6.398 5609.45 8.5 0.058 8.5 5.5 2.39 0.68%Sand-Slime Tailing 0.059 119.0 0.35 0.11 0.23 1 1.70 14.399 200.15 16.79 35 0.71% 2.2 47% 0.90 0.00 0.90 0 0.97 0.05 1.00 1.0 0.056 36.19 52.98 0.080 1.43 0.96 0.24 0.80 1.30 1.0 0.033 1.68 28.28 0.074 6.36 3.90 2 1.7 14.458 1.3842 16.792
6.562 5609.29 11.8 0.109 11.7 5.3 2.29 0.93%Sand-Slime Tailing 0.059 119.0 0.36 0.12 0.24 1 1.70 19.941 277.18 23.23 48 0.96% 2.2 47% 0.91 0.00 0.91 0 0.97 0.05 1.00 1.0 0.056 38.45 61.67 0.090 1.60 0.96 0.28 0.80 1.29 1.0 0.033 1.57 36.41 0.080 6.82 4.21 2 1.7 19.997 1.9145 23.225
6.726 5609.12 9.5 0.147 9.5 5.2 2.27 1.54%Sand-Slime Tailing 0.059 119.0 0.37 0.12 0.24 1 1.70 16.150 224.49 18.82 38 1.60% 2.4 47% 0.92 0.00 0.92 0 0.97 0.05 1.00 1.0 0.056 36.90 55.72 0.083 1.49 0.96 0.25 0.80 1.29 1.0 0.033 2.20 41.40 0.084 7.04 4.26 2 1.7 16.206 1.5515 18.822
6.890 5608.96 7.6 0.165 7.5 7.0 3.04 2.18%Slime Tailings 0.057 113.1 0.38 0.13 0.25 1 1.70 12.801 177.93 14.95 29 2.29% 2.6 71% 0.93 0.00 0.93 0 0.97 0.05 1.00 1.0 0.056 35.30 50.25 0.078 1.39 0.96 0.22 0.80 1.28 1.0 0.033 3.06 45.80 0.088 7.22 4.31 2 1.7 12.875 1.2327 14.954
7.054 5608.80 5.6 0.138 5.5 9.3 4.03 2.48%Slime Tailings 0.057 113.1 0.39 0.13 0.25 1 1.70 9.350 129.97 10.97 20 2.67% 2.7 71% 0.94 0.00 0.94 0 0.97 0.05 1.00 1.0 0.056 33.91 44.88 0.073 1.30 0.96 0.19 0.80 1.28 1.0 0.033 4.10 45.03 0.088 7.05 4.18 2 1.7 9.4487 0.9046 10.974
7.218 5608.63 5.1 0.118 5.0 12.3 5.33 2.33%Slime Tailings 0.057 113.1 0.40 0.14 0.26 1 1.70 8.483 117.91 10.00 18 2.53% 2.7 71% 0.95 0.00 0.95 0 0.97 0.05 1.00 1.0 0.056 33.57 43.58 0.072 1.28 0.96 0.18 0.80 1.27 1.0 0.033 4.31 43.09 0.086 6.81 4.05 2 1.7 8.6134 0.8246 10.004
7.382 5608.47 4.8 0.099 4.7 14.7 6.38 2.05%Slime Tailings 0.057 113.1 0.41 0.14 0.26 1 1.70 8.058 112.01 9.54 17 2.24% 2.7 71% 0.96 0.00 0.96 0 0.97 0.04 1.00 1.0 0.056 33.41 42.95 0.071 1.28 0.96 0.18 0.80 1.27 1.0 0.033 4.26 40.64 0.084 6.55 3.91 2 1.7 8.2142 0.7864 9.540
7.546 5608.30 4.8 0.131 4.7 16.7 7.23 2.74%Slime Tailings 0.057 113.1 0.41 0.15 0.26 1 1.70 7.956 110.59 9.45 16 3.00% 2.8 71% 0.97 0.00 0.97 0 0.97 0.04 0.99 1.0 0.056 33.38 42.82 0.071 1.28 0.96 0.18 0.80 1.27 1.0 0.033 4.96 46.83 0.089 6.84 4.06 2 1.7 8.133 0.7787 9.446
7.710 5608.14 5.1 0.119 5.0 19.0 8.22 2.35%Slime Tailings 0.057 113.1 0.42 0.15 0.27 1 1.70 8.415 116.97 10.01 17 2.56% 2.8 71% 0.98 0.00 0.98 0 0.97 0.05 0.99 1.0 0.056 33.57 43.58 0.072 1.29 0.96 0.18 0.80 1.26 1.0 0.033 4.48 44.87 0.087 6.62 3.95 2 1.7 8.6163 0.8249 10.007
7.874 5607.98 6.7 0.130 6.5 20.7 8.95 1.95%Slime Tailings 0.057 113.1 0.43 0.16 0.27 1 1.70 11.118 154.54 13.17 23 2.08% 2.6 71% 0.99 0.00 0.99 0 0.96 0.05 0.99 1.0 0.055 34.67 47.84 0.075 1.36 0.96 0.21 0.80 1.26 1.0 0.034 3.41 44.85 0.087 6.52 3.94 2 1.7 11.337 1.0854 13.167
8.038 5607.81 7.3 0.077 7.3 16.0 6.91 1.05%Sand-Slime Tailing 0.059 119.0 0.44 0.16 0.28 1 1.70 12.325 171.32 14.51 25 1.11% 2.4 47% 1.00 0.00 1.00 0 0.96 0.05 0.99 1.0 0.055 35.39 49.90 0.077 1.40 0.96 0.22 0.80 1.25 1.0 0.034 2.44 35.45 0.080 5.84 3.62 2 1.7 12.494 1.1962 14.511
8.202 5607.65 8.5 0.080 8.4 14.3 6.19 0.94%Sand-Slime Tailing 0.059 119.0 0.45 0.17 0.28 1 1.70 14.297 198.73 16.78 28 0.99% 2.4 47% 1.01 0.00 1.01 0 0.96 0.05 0.99 1.0 0.055 36.19 52.97 0.080 1.46 0.96 0.24 0.80 1.25 1.0 0.034 2.14 35.85 0.080 5.77 3.61 2 1.7 14.449 1.3833 16.781
8.366 5607.48 6.1 0.091 6.1 11.4 4.95 1.49%Slime Tailings 0.057 113.1 0.46 0.18 0.29 1 1.70 10.285 142.96 12.09 20 1.61% 2.6 71% 1.02 0.00 1.02 0 0.96 0.05 0.99 1.0 0.055 34.30 46.38 0.074 1.34 0.96 0.20 0.80 1.25 1.0 0.034 3.33 40.24 0.084 5.95 3.64 2 1.7 10.406 0.9963 12.086
8.530 5607.32 4.7 0.067 4.7 13.0 5.62 1.41%Slime Tailings 0.057 113.1 0.47 0.18 0.29 1 1.70 7.922 110.12 9.36 15 1.57% 2.7 71% 1.03 0.00 1.03 0 0.96 0.04 0.99 1.0 0.055 33.35 42.71 0.071 1.29 0.96 0.18 0.80 1.24 1.0 0.034 4.02 37.64 0.081 5.71 3.50 2 1.7 8.0596 0.7716 9.361
8.694 5607.16 5.0 0.101 4.9 16.1 6.98 2.04%Slime Tailings 0.057 113.1 0.48 0.19 0.29 1 1.70 8.245 114.61 9.77 15 2.26% 2.8 71% 1.04 0.00 1.04 0 0.96 0.05 0.99 1.0 0.055 33.49 43.27 0.071 1.30 0.96 0.18 0.80 1.24 1.0 0.034 4.60 44.99 0.087 6.06 3.68 2 1.7 8.4159 0.8057 9.775
8.858 5606.99 5.0 0.075 4.9 20.4 8.84 1.49%Slime Tailings 0.057 113.1 0.49 0.19 0.30 1 1.70 8.364 116.26 9.97 15 1.65% 2.7 71% 1.05 0.00 1.05 0 0.96 0.05 0.99 1.0 0.055 33.56 43.52 0.072 1.30 0.96 0.18 0.80 1.24 1.0 0.034 4.00 39.87 0.083 5.68 3.49 2 1.7 8.5806 0.8215 9.966
9.022 5606.83 7.8 0.111 7.7 23.6 10.24 1.42%Slime Tailings 0.057 113.1 0.50 0.20 0.30 1 1.70 13.022 181.01 15.42 24 1.52% 2.5 71% 1.05 0.00 1.05 0 0.96 0.05 0.99 1.0 0.055 35.46 50.87 0.078 1.43 0.96 0.23 0.80 1.23 1.0 0.034 2.84 43.84 0.087 5.83 3.63 2 1.7 13.273 1.2707 15.416
9.186 5606.66 8.8 0.109 8.7 14.2 6.17 1.24%Sand-Slime Tailing 0.059 119.0 0.51 0.20 0.31 1 1.70 14.739 204.87 17.29 27 1.32% 2.4 47% 1.06 0.00 1.06 0 0.96 0.05 0.99 1.0 0.055 36.37 53.66 0.081 1.48 0.96 0.24 0.80 1.23 1.0 0.034 2.50 43.16 0.086 5.71 3.60 2 1.7 14.89 1.4256 17.294
9.350 5606.50 11.9 0.108 11.8 12.8 5.55 0.91%Sand-Slime Tailing 0.059 119.0 0.52 0.21 0.31 1 1.70 20.043 278.60 23.44 36 0.95% 2.3 47% 1.07 0.00 1.07 0 0.96 0.05 0.99 1.0 0.055 38.52 61.96 0.090 1.65 0.95 0.28 0.80 1.22 1.0 0.034 1.81 42.45 0.085 5.59 3.62 2 1.7 20.179 1.9319 23.437
9.514 5606.34 10.3 0.138 10.2 9.1 3.92 1.35%Sand-Slime Tailing 0.059 119.0 0.53 0.21 0.32 1 1.70 17.340 241.03 20.25 31 1.42% 2.4 47% 1.08 0.00 1.08 0 0.95 0.05 0.99 1.0 0.054 37.40 57.65 0.085 1.57 0.95 0.26 0.80 1.22 1.0 0.034 2.36 47.79 0.090 5.79 3.68 2 1.7 17.436 1.6693 20.251
9.678 5606.17 8.8 0.125 8.7 12.4 5.39 1.42%Sand-Slime Tailing 0.059 119.0 0.54 0.22 0.32 1 1.70 14.858 206.53 17.41 26 1.51% 2.5 47% 1.09 0.00 1.09 0 0.95 0.05 0.99 1.0 0.054 36.41 53.82 0.081 1.49 0.95 0.24 0.80 1.22 1.0 0.035 2.72 47.30 0.089 5.69 3.59 2 1.7 14.99 1.4351 17.410
9.842 5606.01 7.8 0.130 7.7 15.8 6.85 1.68%Slime Tailings 0.057 113.1 0.55 0.22 0.33 1 1.70 13.022 181.01 15.32 22 1.80% 2.6 71% 1.10 0.00 1.10 0 0.95 0.05 0.99 1.0 0.054 35.42 50.74 0.078 1.44 0.95 0.23 0.80 1.21 1.0 0.035 3.25 49.79 0.091 5.75 3.59 2 1.7 13.19 1.2628 15.319
10.006 5605.84 5.8 0.162 5.7 21.9 9.49 2.79%Slime Tailings 0.057 113.1 0.56 0.23 0.33 1 1.70 9.656 134.22 11.48 16 3.08% 2.8 71% 1.11 0.00 1.11 0 0.95 0.05 0.99 1.0 0.054 34.09 45.57 0.073 1.35 0.95 0.20 0.80 1.21 1.0 0.035 5.13 58.89 0.099 6.14 3.75 2 1.7 9.8884 0.9467 11.485
10.170 5605.68 6.7 0.084 6.5 21.8 9.43 1.26%Slime Tailings 0.057 113.1 0.57 0.23 0.33 1 1.70 11.101 154.30 13.16 18 1.38% 2.6 71% 1.12 0.00 1.12 0 0.95 0.05 0.99 1.0 0.054 34.67 47.83 0.075 1.39 0.95 0.21 0.80 1.21 1.0 0.035 3.29 43.25 0.086 5.27 3.33 2 1.7 11.332 1.0849 13.161
10.335 5605.52 10.0 0.096 9.8 21.2 9.19 0.96%Sand-Slime Tailing 0.059 119.0 0.58 0.24 0.34 1 1.70 16.728 232.52 19.69 28 1.02% 2.4 47% 1.13 0.00 1.13 0 0.95 0.05 0.99 1.0 0.054 37.21 56.90 0.084 1.56 0.95 0.26 0.80 1.20 1.0 0.035 2.20 43.26 0.086 5.20 3.38 2 1.7 16.953 1.6231 19.690
10.499 5605.35 8.9 0.103 8.8 20.2 8.74 1.16%Sand-Slime Tailing 0.059 119.0 0.59 0.24 0.34 1 1.70 14.892 207.00 17.54 24 1.24% 2.5 47% 1.14 0.00 1.14 0 0.95 0.05 0.99 1.0 0.054 36.45 54.00 0.081 1.51 0.95 0.24 0.80 1.20 1.0 0.035 2.60 45.66 0.088 5.26 3.38 2 1.7 15.106 1.4462 17.545
10.663 5605.19 7.0 0.126 6.9 26.1 11.32 1.79%Slime Tailings 0.057 113.1 0.59 0.25 0.35 1 1.70 11.662 162.10 13.87 18 1.96% 2.7 71% 1.15 0.00 1.15 0 0.95 0.05 0.99 1.0 0.054 34.92 48.78 0.076 1.41 0.95 0.21 0.80 1.20 1.0 0.035 3.80 52.67 0.094 5.52 3.47 2 1.7 11.939 1.1431 13.867
10.827 5605.02 7.3 0.113 7.1 29.0 12.55 1.55%Slime Tailings 0.057 113.1 0.60 0.25 0.35 1 1.70 12.087 168.01 14.40 19 1.69% 2.6 71% 1.16 0.00 1.16 0 0.95 0.05 0.99 1.0 0.054 35.10 49.50 0.077 1.43 0.95 0.22 0.80 1.20 1.0 0.035 3.49 50.26 0.092 5.36 3.39 2 1.7 12.394 1.1866 14.395
10.991 5604.86 8.8 0.076 8.6 29.8 12.92 0.87%Sand-Slime Tailing 0.059 119.0 0.61 0.26 0.36 1 1.70 14.586 202.75 17.31 23 0.93% 2.4 47% 1.17 0.00 1.17 0 0.94 0.05 0.98 1.0 0.054 36.37 53.68 0.081 1.51 0.95 0.24 0.80 1.19 1.0 0.035 2.41 41.68 0.085 4.88 3.19 2 1.7 14.902 1.4268 17.308
11.155 5604.70 10.2 0.109 10.0 19.3 8.38 1.07%Sand-Slime Tailing 0.059 119.0 0.62 0.26 0.36 1 1.70 17.068 237.25 20.06 26 1.14% 2.4 47% 1.18 0.00 1.18 0 0.94 0.05 0.98 1.0 0.054 37.34 57.40 0.085 1.59 0.95 0.26 0.80 1.19 1.0 0.035 2.37 47.58 0.090 5.10 3.34 2 1.7 17.273 1.6537 20.062
11.319 5604.53 8.3 0.156 8.2 20.1 8.71 1.87%Slime Tailings 0.057 113.1 0.63 0.27 0.37 1 1.70 13.940 193.77 16.44 21 2.03% 2.6 71% 1.19 0.00 1.19 0 0.94 0.05 0.98 1.0 0.054 35.81 52.25 0.080 1.49 0.95 0.23 0.80 1.19 1.0 0.035 3.54 58.25 0.098 5.53 3.51 2 1.7 14.153 1.355 16.438
11.483 5604.37 7.8 0.195 7.6 32.3 13.99 2.49%Slime Tailings 0.057 113.1 0.64 0.27 0.37 1 1.70 12.971 180.30 15.46 19 2.71% 2.7 71% 1.20 0.00 1.20 0 0.94 0.05 0.98 1.0 0.054 35.47 50.94 0.078 1.47 0.95 0.23 0.80 1.18 1.0 0.035 4.27 66.05 0.107 5.94 3.70 2 1.7 13.314 1.2747 15.463
11.647 5604.20 8.0 0.126 7.8 34.4 14.89 1.57%Slime Tailings 0.057 113.1 0.65 0.28 0.37 1 1.70 13.311 185.02 15.88 20 1.70% 2.6 71% 1.21 0.00 1.21 0 0.94 0.05 0.98 1.0 0.053 35.62 51.50 0.079 1.48 0.95 0.23 0.80 1.18 1.0 0.035 3.41 54.19 0.095 5.22 3.35 2 1.7 13.676 1.3093 15.883
11.811 5604.04 9.1 0.108 8.9 32.1 13.92 1.19%Sand-Slime Tailing 0.059 119.0 0.66 0.28 0.38 1 1.70 15.045 209.13 17.87 22 1.29% 2.5 47% 1.22 0.00 1.22 0 0.94 0.05 0.98 1.0 0.053 36.57 54.44 0.082 1.54 0.95 0.24 0.80 1.18 1.0 0.035 2.80 50.01 0.092 4.98 3.26 2 1.7 15.386 1.4731 17.870
11.975 5603.88 8.0 0.097 7.8 31.7 13.74 1.21%Sand-Slime Tailing 0.059 119.0 0.67 0.29 0.38 1 1.70 13.311 185.02 15.85 19 1.32% 2.6 47% 1.23 0.00 1.23 0 0.94 0.05 0.98 1.0 0.053 35.86 51.71 0.079 1.49 0.95 0.23 0.80 1.18 1.0 0.036 3.12 49.38 0.091 4.90 3.19 2 1.7 13.648 1.3066 15.851
Idriss and Boulanger (2008)
Max. Horiz. Acceleration, Amax/g:
Earthquake Moment Magnitude, M:
Stress at
Midpoint of Layer (tsf)
Equil Pore
Pressure at Midpoint of Layer (tsf)
Stress at
Midpoint of Layer (tsf)
Equiv. Number of Uniform Strain Cycles, N
Erosion Protection Layer
Water Storage/Rooting Zone Layer
High Compaction Layer
Platform/Random Fill Layer
FINAL COVER
Elev. at
Top of Layer (ft)
Elev. At
Midpoint of Layer (ft)
Bottom
of Layer (ft)
Thickness of Layer (ft)
Unit Weight (tcf)
Unit Weight (pcf)
Stress at
Bottom of Layer (tsf)
Pressure
at Bottom of Layer (tsf)
Stress at
Bottom of Layer (tsf)
Youd, et al (2001)
Max. Horiz. Acceleration, Amax/g: 0.15
Earthquake Moment Magnitude, M: 5.5
Magnitude Scaling Factor, MSF:
Equil Pore
Pressure at time of
Conditions at t1 Liquefaction Triggering Analyses Idriss & Boulanger (2008)Equil
Pore
Pressure
at t1FC
Cyclic Resistance Ratio
Magnitude Scaling Factor, MSF:
Pw (u2)Pw (u2)
2013 CPT Data from ConeTec CPT Data Interpretations
fs/qt
Material Type (as determined
by fines
Unit Weight Unit Weight
Total Stress
at time of CPT
Depth
at time of CPT Elevation qt fs qc
Effective Stress at
time of CPT
Saturated
at time of CPT CN qc1 qc1 qc1N
Normalized Cone
Penetration Resistance, Qt
Normalized Friction
Ratio, Fr (%)
Type Index, Ic
FoS
Cyclic Stress Ratio
FoS
CSR
M=7.5,
s'v=1atm
∆qc1n qc1n-cs
(CRR)
M=7.5,
s'v=1atm
CSR
M=7.5,
s'v=1atm
WHITE MESA TAILINGS REPOSITORY LIQUEFACTION AND SEISMIC SETTLEMENT ANALYSES - 2W2
Scaling Factor for stress ration, rm
Volumetric Strain Ratio for Site-Specific Design Earth
Kc qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Effective
Stress at
t1
Total Stress
at t1
Saturated
at t1
Idriss & Boulanger (2008) Youd et al. (2001)
Liquefiable?1=Yes
2=No
Cyclic Stress Ratio
Liquef_SeismicSettle_30Aug2015.xls Page 4 of 36
Energy Fuels Resources (USA) Inc.
White Mesa MillLiquefaction Analyses
Data File: 13-52106_SP2W2-BSC-CPT 5613.10 Water surface elevation during CPT investigation (ft a5615.85 Ground Surface Elevation at time of CPT (ft amsl)Location: White Mesa 2013 CPT Investigation 0.15 5607.57 Water surface elevation at t0 (ft amsl)5625.87 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl)
..\..\..\6.2.3 Field Data\2013 Field Investigation\Conetec Dat 5.5 5598.51 Water surface elevation at t1 (ft amsl) 0.50 Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after pla ###### 5625.62 5625.37 0.50 0.055 110 0.028 0.014 0.00 0.00 0.028 0.014
Tailings Sands 1.69 5593.51 Water surface elevation at t2 (ft amsl)3.50 Thickness of Water Storage/Rooting Zone (ft) ###### 5623.62 5621.87 3.50 0.054 107 0.215 0.121 0.00 0.00 0.215 0.121
Tailings Sand-Slimes 4.00 Thickness of High Compaction Layer (ft)###### 5619.87 5617.87 4.00 0.060 120 0.454 0.334 0.00 0.00 0.454 0.334
Tailings Slimes 1.44 2.02 Thickness of Random/Platform Fill on on top of existing interim cover (ft) ###### 5616.86 5615.85 2.02 0.050 101 0.556 0.505 0.00 0.00 0.556 0.505
Interim Cover 0.47 1111.60 Additional Stress due to Final Cover Placement, ΔσFC (psf)
Cells Requiring User Input/Manipulation 2.21 2.21 7.51 5593.51 Elevation of bottom of tailings (liner) (ft amsl)
rd Cσ Kσ Ka rd Dr f Kσ Ka Avg CN qc1 qc1 qc1N
(ft) (ft amsl) TSF TSF TSF (ft) PSI (%) (tcf) (pcf) (tsf)(tsf)(tsf) 1=Yes TSF MPa % (tsf)(tsf)(tsf) 1=Yes FoS TSF MPa
0=No 0=No
Idriss and Boulanger (2008)
Max. Horiz. Acceleration, Amax/g:
Earthquake Moment Magnitude, M:
Stress at
Midpoint of Layer (tsf)
Equil Pore
Pressure at Midpoint of Layer (tsf)
Stress at
Midpoint of Layer (tsf)
Equiv. Number of Uniform Strain Cycles, N
Erosion Protection Layer
Water Storage/Rooting Zone Layer
High Compaction Layer
Platform/Random Fill Layer
FINAL COVER
Elev. at
Top of Layer (ft)
Elev. At
Midpoint of Layer (ft)
Bottom
of Layer (ft)
Thickness of Layer (ft)
Unit Weight (tcf)
Unit Weight (pcf)
Stress at
Bottom of Layer (tsf)
Pressure
at Bottom of Layer (tsf)
Stress at
Bottom of Layer (tsf)
Youd, et al (2001)
Max. Horiz. Acceleration, Amax/g: 0.15
Earthquake Moment Magnitude, M: 5.5
Magnitude Scaling Factor, MSF:
Equil Pore
Pressure at time of
Conditions at t1 Liquefaction Triggering Analyses Idriss & Boulanger (2008)Equil
Pore
Pressure
at t1FC
Cyclic Resistance Ratio
Magnitude Scaling Factor, MSF:
Pw (u2)Pw (u2)
2013 CPT Data from ConeTec CPT Data Interpretations
fs/qt
Material Type (as determined
by fines
Unit Weight Unit Weight
Total Stress
at time of CPT
Depth
at time of CPT Elevation qt fs qc
Effective Stress at
time of CPT
Saturated
at time of CPT CN qc1 qc1 qc1N
Normalized Cone
Penetration Resistance, Qt
Normalized Friction
Ratio, Fr (%)
Type Index, Ic
FoS
Cyclic Stress Ratio
FoS
CSR
M=7.5,
s'v=1atm
∆qc1n qc1n-cs
(CRR)
M=7.5,
s'v=1atm
CSR
M=7.5,
s'v=1atm
WHITE MESA TAILINGS REPOSITORY LIQUEFACTION AND SEISMIC SETTLEMENT ANALYSES - 2W2
Scaling Factor for stress ration, rm
Volumetric Strain Ratio for Site-Specific Design Earth
Kc qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Effective
Stress at
t1
Total Stress
at t1
Saturated
at t1
Idriss & Boulanger (2008) Youd et al. (2001)
Liquefiable?1=Yes
2=No
Cyclic Stress Ratio
12.139 5603.71 7.7 0.106 7.5 40.4 17.50 1.37%Slime Tailings 0.057 113.1 0.68 0.29 0.39 1 1.70 12.682 176.28 15.23 18 1.51% 2.6 71% 1.24 0.00 1.24 0 0.94 0.05 0.98 1.0 0.053 35.39 50.62 0.078 1.47 0.95 0.23 0.80 1.17 1.0 0.036 3.42 52.15 0.093 4.96 3.21 2 1.7 13.111 1.2552 15.227
12.303 5603.55 7.1 0.110 6.8 39.6 17.17 1.56%Slime Tailings 0.057 113.1 0.69 0.30 0.39 1 1.70 11.594 161.16 13.95 16 1.72% 2.7 71% 1.25 0.00 1.25 0 0.94 0.05 0.98 1.0 0.053 34.95 48.90 0.076 1.44 0.95 0.22 0.80 1.17 1.0 0.036 3.90 54.45 0.095 5.00 3.22 2 1.7 12.015 1.1503 13.954
12.467 5603.38 6.8 0.107 6.6 37.4 16.22 1.57%Slime Tailings 0.057 113.1 0.70 0.30 0.40 1 1.70 11.169 155.25 13.43 15 1.75% 2.7 71% 1.25 0.00 1.25 0 0.93 0.05 0.98 1.0 0.053 34.77 48.20 0.076 1.43 0.95 0.21 0.80 1.17 1.0 0.036 4.07 54.72 0.095 4.96 3.20 2 1.7 11.566 1.1073 13.433
12.631 5603.22 7.0 0.092 6.8 30.6 13.25 1.32%Slime Tailings 0.057 113.1 0.71 0.31 0.40 1 1.70 11.543 160.45 13.78 16 1.47% 2.7 71% 1.26 0.00 1.26 0 0.93 0.05 0.98 1.0 0.053 34.89 48.67 0.076 1.44 0.95 0.21 0.80 1.17 1.0 0.036 3.74 51.51 0.093 4.78 3.11 2 1.7 11.867 1.1362 13.783
12.795 5603.05 6.2 0.105 6.0 36.6 15.85 1.68%Slime Tailings 0.057 113.1 0.72 0.31 0.40 1 1.70 10.234 142.25 12.34 14 1.90% 2.8 71% 1.27 0.00 1.27 0 0.93 0.05 0.98 1.0 0.053 34.38 46.72 0.074 1.41 0.95 0.20 0.80 1.16 1.0 0.036 4.56 56.24 0.097 4.93 3.17 2 1.7 10.622 1.017 12.337
12.959 5602.89 7.8 0.124 7.5 43.8 18.98 1.60%Slime Tailings 0.057 113.1 0.73 0.32 0.41 1 1.70 12.733 176.99 15.33 17 1.76% 2.7 71% 1.28 0.00 1.28 0 0.93 0.05 0.98 1.0 0.053 35.43 50.75 0.078 1.48 0.95 0.23 0.80 1.16 1.0 0.036 3.79 58.13 0.098 4.97 3.23 2 1.7 13.198 1.2636 15.328
13.123 5602.73 10.5 0.147 10.3 32.1 13.89 1.40%Sand-Slime Tailing 0.059 119.0 0.74 0.32 0.41 1 1.70 17.493 243.15 20.71 24 1.51% 2.5 47% 1.29 0.00 1.29 0 0.93 0.05 0.98 1.0 0.053 37.57 58.28 0.086 1.64 0.95 0.26 0.80 1.16 1.0 0.036 2.87 59.45 0.100 4.98 3.31 2 1.7 17.833 1.7073 20.712
13.287 5602.56 8.1 0.177 8.0 30.0 13.02 2.18%Slime Tailings 0.057 113.1 0.75 0.33 0.42 1 1.70 13.515 187.86 16.07 18 2.39% 2.7 71% 1.30 0.00 1.30 0 0.93 0.05 0.98 1.0 0.053 35.68 51.75 0.079 1.51 0.95 0.23 0.80 1.16 1.0 0.036 4.27 68.65 0.110 5.46 3.48 2 1.7 13.834 1.3244 16.067
13.451 5602.40 6.8 0.135 6.6 34.3 14.86 1.98%Slime Tailings 0.057 113.1 0.75 0.33 0.42 1 1.70 11.237 156.19 13.47 14 2.22% 2.8 71% 1.31 0.00 1.31 0 0.93 0.05 0.98 1.0 0.052 34.78 48.25 0.076 1.44 0.95 0.21 0.80 1.15 1.0 0.036 4.72 63.58 0.104 5.10 3.27 2 1.7 11.601 1.1107 13.474
13.615 5602.23 7.9 0.138 7.7 36.4 15.78 1.74%Slime Tailings 0.057 113.1 0.76 0.34 0.43 1 1.70 13.073 181.71 15.63 17 1.93% 2.7 71% 1.32 0.00 1.32 0 0.93 0.05 0.98 1.0 0.052 35.53 51.16 0.079 1.50 0.94 0.23 0.80 1.15 1.0 0.036 4.01 62.70 0.103 5.01 3.25 2 1.7 13.459 1.2886 15.632
13.779 5602.07 6.3 0.125 6.2 26.0 11.28 1.97%Slime Tailings 0.057 113.1 0.77 0.34 0.43 1 1.70 10.489 145.80 12.50 13 2.25% 2.8 71% 1.33 0.00 1.33 0 0.92 0.05 0.98 1.0 0.052 34.44 46.95 0.075 1.43 0.94 0.20 0.80 1.15 1.0 0.036 5.08 63.48 0.104 5.00 3.21 2 1.7 10.765 1.0307 12.503
13.943 5601.91 8.1 0.120 7.9 29.9 12.95 1.49%Slime Tailings 0.057 113.1 0.78 0.35 0.43 1 1.70 13.413 186.44 15.95 17 1.65% 2.7 71% 1.34 0.00 1.34 0 0.92 0.05 0.98 1.0 0.052 35.64 51.59 0.079 1.51 0.94 0.23 0.80 1.15 1.0 0.036 3.74 59.68 0.100 4.76 3.14 2 1.7 13.73 1.3145 15.947
14.107 5601.74 16.0 0.167 16.0 7.3 3.14 1.04%Sand-Slime Tailing 0.059 119.0 0.79 0.35 0.44 1 1.63 26.112 362.96 30.41 35 1.09% 2.3 47% 1.35 0.00 1.35 0 0.92 0.06 0.97 1.0 0.052 40.97 71.38 0.101 1.95 0.94 0.32 0.80 1.14 1.0 0.036 1.96 59.56 0.100 4.71 3.33 2 1.632 26.186 2.507 30.413
14.271 5601.58 12.3 0.154 12.2 9.6 4.16 1.25%Sand-Slime Tailing 0.059 119.0 0.80 0.36 0.44 1 1.66 20.342 282.76 23.74 26 1.34% 2.5 47% 1.36 0.00 1.36 0 0.92 0.05 0.97 1.0 0.052 38.63 62.37 0.091 1.74 0.94 0.28 0.80 1.14 1.0 0.036 2.56 60.83 0.101 4.72 3.23 2 1.661961 20.442 1.9571 23.742
14.436 5601.41 9.4 0.143 9.3 15.0 6.48 1.52%Sand-Slime Tailing 0.059 119.0 0.81 0.36 0.45 1 1.67 15.535 215.94 18.22 19 1.66% 2.6 47% 1.37 0.00 1.37 0 0.92 0.05 0.98 1.0 0.052 36.69 54.92 0.082 1.59 0.94 0.25 0.80 1.14 1.0 0.036 3.44 62.76 0.103 4.77 3.18 2 1.668682 15.691 1.5023 18.224
14.600 5601.25 7.8 0.109 7.7 29.2 12.64 1.39%Slime Tailings 0.057 113.1 0.82 0.37 0.45 1 1.66 12.673 176.16 15.07 16 1.55% 2.7 71% 1.38 0.00 1.38 0 0.92 0.05 0.98 1.0 0.052 35.34 50.41 0.078 1.50 0.94 0.22 0.80 1.14 1.0 0.037 3.86 58.13 0.098 4.51 3.01 2 1.656647 12.975 1.2422 15.070
14.764 5601.09 7.9 0.092 7.6 52.5 22.75 1.16%Sand-Slime Tailing 0.059 119.0 0.83 0.37 0.46 1 1.64 12.474 173.39 15.11 16 1.30% 2.6 47% 1.39 0.00 1.39 0 0.92 0.05 0.98 1.0 0.052 35.60 50.72 0.078 1.51 0.94 0.22 0.80 1.14 1.0 0.037 3.58 54.12 0.095 4.31 2.91 2 1.643455 13.012 1.2458 15.113
14.928 5600.92 7.5 0.153 7.1 63.0 27.30 2.03%Slime Tailings 0.057 113.1 0.84 0.38 0.46 1 1.63 11.651 161.95 14.28 15 2.29% 2.8 71% 1.40 0.00 1.40 0 0.92 0.05 0.98 1.0 0.052 35.06 49.34 0.077 1.49 0.94 0.22 0.80 1.13 1.0 0.037 4.75 67.81 0.109 4.91 3.20 2 1.631828 12.293 1.1769 14.278
15.092 5600.76 7.7 0.237 7.3 69.8 30.26 3.08%Slime Tailings 0.057 113.1 0.85 0.39 0.46 1 1.62 11.780 163.74 14.50 15 3.46% 2.9 71% 1.41 0.00 1.41 0 0.91 0.05 0.98 1.0 0.052 35.14 49.64 0.077 1.49 0.94 0.22 0.80 1.13 1.0 0.037 5.66 82.06 0.131 5.87 3.68 2 1.620387 12.486 1.1955 14.502
15.256 5600.59 9.1 0.255 9.0 23.2 10.06 2.79%Slime Tailings 0.057 113.1 0.86 0.39 0.47 1 1.61 14.482 201.30 17.09 18 3.08% 2.8 71% 1.41 0.00 1.41 0 0.91 0.05 0.97 1.0 0.051 36.04 53.13 0.081 1.57 0.94 0.24 0.80 1.13 1.0 0.037 4.81 82.21 0.132 5.83 3.70 2 1.609127 14.715 1.4088 17.091
15.420 5600.43 10.0 0.246 9.8 31.0 13.41 2.45%Slime Tailings 0.057 113.1 0.87 0.40 0.47 1 1.60 15.709 218.35 18.60 19 2.69% 2.7 71% 1.42 0.00 1.42 0 0.91 0.05 0.97 1.0 0.051 36.57 55.17 0.083 1.61 0.94 0.25 0.80 1.13 1.0 0.037 4.26 79.34 0.126 5.55 3.58 2 1.598044 16.018 1.5335 18.603
15.584 5600.27 9.3 0.199 9.1 28.5 12.35 2.14%Slime Tailings 0.057 113.1 0.88 0.40 0.48 1 1.59 14.475 201.20 17.14 18 2.36% 2.7 71% 1.43 0.00 1.43 0 0.91 0.05 0.97 1.0 0.051 36.06 53.20 0.081 1.57 0.94 0.24 0.80 1.13 1.0 0.037 4.26 73.00 0.116 5.06 3.32 2 1.587134 14.757 1.4128 17.139
15.748 5600.10 9.5 0.138 9.2 48.8 21.16 1.45%Sand-Slime Tailing 0.059 119.0 0.89 0.41 0.48 1 1.58 14.476 201.21 17.37 18 1.60% 2.6 47% 1.44 0.00 1.44 0 0.91 0.05 0.97 1.0 0.051 36.39 53.76 0.081 1.59 0.94 0.24 0.80 1.12 1.0 0.037 3.55 61.75 0.102 4.40 2.99 2 1.575164 14.956 1.4319 17.370
15.912 5599.94 9.5 0.075 9.3 47.2 20.47 0.79%Sand-Slime Tailing 0.059 119.0 0.90 0.41 0.49 1 1.56 14.461 201.01 17.33 18 0.87% 2.5 47% 1.45 0.00 1.45 0 0.91 0.05 0.97 1.0 0.051 36.38 53.71 0.081 1.59 0.94 0.24 0.80 1.12 1.0 0.037 2.79 48.31 0.090 3.86 2.72 2 1.563399 14.922 1.4287 17.331
16.076 5599.77 10.5 0.072 10.3 43.2 18.73 0.68%Sand-Slime Tailing 0.059 119.0 0.91 0.42 0.49 1 1.55 15.937 221.53 19.00 20 0.75% 2.4 47% 1.46 0.00 1.46 0 0.91 0.05 0.97 1.0 0.051 36.96 55.96 0.083 1.64 0.94 0.25 0.80 1.12 1.0 0.037 2.47 46.86 0.089 3.77 2.70 2 1.551831 16.356 1.5659 18.997
16.240 5599.61 29.3 0.191 29.0 50.3 21.81 0.65%Sand-Slime Tailing 0.059 119.0 0.92 0.42 0.50 1 1.43 41.329 574.48 48.52 57 0.67% 2.0 47% 1.47 0.00 1.47 0 0.91 0.07 0.96 1.0 0.050 47.32 95.84 0.136 2.70 0.94 0.40 0.80 1.12 1.0 0.037 1.31 63.59 0.104 4.36 3.53 2 1.427613 41.778 3.9998 48.522
16.404 5599.45 22.6 0.359 22.6 8.2 3.54 1.59%Sand-Slime Tailing 0.059 119.0 0.93 0.43 0.50 1 1.45 32.779 455.63 38.16 43 1.65% 2.3 47% 1.48 0.00 1.48 0 0.90 0.06 0.97 1.0 0.050 43.68 81.84 0.115 2.28 0.94 0.36 0.80 1.11 1.0 0.037 2.05 78.17 0.124 5.18 3.73 2 1.452341 32.853 3.1454 38.157
16.568 5599.28 14.1 0.339 14.0 14.0 6.07 2.40%Slime Tailings 0.057 113.1 0.94 0.43 0.50 1 1.50 21.048 292.57 24.60 26 2.57% 2.6 71% 1.49 0.00 1.49 0 0.90 0.06 0.97 1.0 0.051 38.65 63.25 0.092 1.81 0.94 0.29 0.80 1.11 1.0 0.037 3.46 85.09 0.137 5.67 3.74 2 1.500236 21.179 2.0277 24.599
16.732 5599.12 8.8 0.276 8.7 23.2 10.05 3.13%Slime Tailings 0.057 113.1 0.94 0.44 0.51 1 1.51 13.104 182.14 15.47 16 3.50% 2.9 71% 1.50 0.00 1.50 0 0.90 0.05 0.97 1.0 0.051 35.48 50.95 0.078 1.55 0.94 0.23 0.80 1.11 1.0 0.037 5.53 85.58 0.138 5.67 3.61 2 1.509668 13.323 1.2755 15.473
16.896 5598.95 8.5 0.184 8.2 42.7 18.51 2.17%Slime Tailings 0.057 113.1 0.95 0.44 0.51 1 1.50 12.346 171.60 14.80 15 2.44% 2.8 71% 1.51 0.00 1.51 0 0.90 0.05 0.97 1.0 0.051 35.24 50.05 0.078 1.53 0.94 0.22 0.80 1.11 1.0 0.037 4.85 71.80 0.114 4.65 3.09 2 1.500079 12.746 1.2203 14.803
17.060 5598.79 8.5 0.183 8.2 54.7 23.72 2.15%Slime Tailings 0.057 113.1 0.96 0.45 0.52 1 1.49 12.178 169.28 14.74 15 2.42% 2.8 71% 1.52 0.00 1.52 0 0.90 0.05 0.97 1.0 0.051 35.22 49.96 0.077 1.53 0.94 0.22 0.80 1.11 1.0 0.037 4.86 71.61 0.114 4.61 3.07 2 1.490627 12.688 1.2147 14.736
17.224 5598.63 8.3 0.174 7.9 66.5 28.82 2.09%Slime Tailings 0.057 113.1 0.97 0.45 0.52 1 1.48 11.717 162.87 14.32 14 2.37% 2.8 71% 1.53 0.00 1.53 0 0.90 0.05 0.97 1.0 0.050 35.08 49.40 0.077 1.52 0.94 0.22 0.80 1.11 1.0 0.037 4.91 70.38 0.112 4.50 3.01 2 1.481311 12.332 1.1807 14.323
17.388 5598.46 9.6 0.196 9.2 57.7 25.02 2.05%Slime Tailings 0.057 113.1 0.98 0.46 0.53 1 1.47 13.529 188.05 16.33 16 2.29% 2.8 71% 1.54 0.00 1.54 1 0.90 0.05 0.97 1.0 0.050 35.77 52.10 0.080 1.58 0.94 0.23 0.80 1.10 1.0 0.037 4.41 72.07 0.115 4.56 3.07 2 1.472126 14.059 1.346 16.329
17.552 5598.30 8.9 0.209 8.4 74.2 32.14 2.35%Slime Tailings 0.057 113.1 0.99 0.46 0.53 1 1.46 12.319 171.23 15.09 15 2.65% 2.8 71% 1.55 0.01 1.54 1 0.90 0.05 0.97 1.0 0.051 35.34 50.44 0.078 1.54 0.94 0.22 0.80 1.10 1.0 0.038 4.99 75.30 0.120 4.70 3.12 2 1.463069 12.996 1.2443 15.095
17.716 5598.13 9.1 0.199 8.7 67.5 29.25 2.19%Slime Tailings 0.057 113.1 1.00 0.47 0.53 1 1.45 12.622 175.44 15.37 15 2.46% 2.8 71% 1.56 0.01 1.54 1 0.89 0.05 0.97 1.0 0.051 35.44 50.81 0.078 1.55 0.94 0.23 0.80 1.10 1.0 0.038 4.77 73.31 0.117 4.53 3.04 2 1.454139 13.235 1.2671 15.371
17.880 5597.97 9.1 0.170 8.7 60.5 26.22 1.88%Slime Tailings 0.057 113.1 1.01 0.47 0.54 1 1.45 12.545 174.38 15.20 15 2.11% 2.8 71% 1.57 0.02 1.55 1 0.89 0.05 0.97 1.0 0.051 35.38 50.59 0.078 1.54 0.93 0.23 0.80 1.10 1.0 0.038 4.50 68.48 0.110 4.22 2.88 2 1.445332 13.091 1.2534 15.205
18.044 5597.81 9.4 0.142 9.0 57.5 24.92 1.52%Sand-Slime Tailing 0.059 119.0 1.02 0.48 0.54 1 1.44 12.921 179.60 15.61 15 1.70% 2.7 47% 1.58 0.02 1.55 1 0.89 0.05 0.97 1.0 0.051 35.77 51.38 0.079 1.55 0.93 0.23 0.80 1.10 1.0 0.038 4.03 62.94 0.103 3.92 2.74 2 1.435653 13.436 1.2864 15.605
18.208 5597.64 8.7 0.209 8.3 57.7 25.02 2.41%Slime Tailings 0.057 113.1 1.03 0.48 0.55 1 1.43 11.845 164.64 14.35 14 2.74% 2.9 71% 1.58 0.03 1.56 1 0.89 0.05 0.97 1.0 0.051 35.09 49.44 0.077 1.51 0.93 0.22 0.80 1.10 1.0 0.038 5.27 75.69 0.120 4.53 3.02 2 1.427098 12.359 1.1833 14.354
18.372 5597.48 10.0 0.260 9.5 72.0 31.20 2.61%Slime Tailings 0.057 113.1 1.04 0.49 0.55 1 1.42 13.491 187.53 16.41 16 2.91% 2.8 71% 1.59 0.03 1.56 1 0.89 0.05 0.97 1.0 0.051 35.80 52.21 0.080 1.56 0.93 0.23 0.80 1.09 1.0 0.038 4.95 81.19 0.130 4.83 3.20 2 1.418658 14.129 1.3527 16.410
18.537 5597.31 10.6 0.320 10.3 54.3 23.51 3.02%Slime Tailings 0.057 113.1 1.05 0.49 0.55 1 1.41 14.484 201.33 17.38 17 3.35% 2.8 71% 1.60 0.04 1.57 1 0.89 0.05 0.97 1.0 0.051 36.14 53.52 0.081 1.59 0.93 0.24 0.80 1.09 1.0 0.039 5.08 88.30 0.144 5.31 3.45 2 1.410331 14.962 1.4324 17.377
18.701 5597.15 12.3 0.297 12.1 37.1 16.09 2.42%Slime Tailings 0.057 113.1 1.06 0.50 0.56 1 1.40 16.910 235.04 20.02 20 2.64% 2.7 71% 1.61 0.04 1.57 1 0.89 0.05 0.97 1.0 0.051 37.06 57.08 0.085 1.66 0.93 0.26 0.80 1.09 1.0 0.039 4.13 82.75 0.133 4.84 3.25 2 1.402115 17.235 1.65 20.017
18.865 5596.99 17.2 0.199 17.1 20.4 8.85 1.16%Sand-Slime Tailing 0.059 119.0 1.07 0.50 0.56 1 1.37 23.404 325.31 27.38 29 1.23% 2.4 47% 1.62 0.05 1.57 1 0.89 0.06 0.97 1.0 0.051 39.91 67.29 0.096 1.89 0.93 0.30 0.80 1.09 1.0 0.039 2.32 63.52 0.104 3.75 2.82 2 1.369428 23.578 2.2574 27.385
19.029 5596.82 16.8 0.219 16.7 20.1 8.71 1.31%Sand-Slime Tailing 0.059 119.0 1.08 0.51 0.57 1 1.36 22.707 315.63 26.57 28 1.39% 2.4 47% 1.63 0.05 1.58 1 0.88 0.06 0.97 1.0 0.051 39.62 66.19 0.095 1.86 0.93 0.30 0.80 1.09 1.0 0.039 2.50 66.55 0.107 3.83 2.85 2 1.363804 22.878 2.1904 26.572
19.193 5596.66 15.5 0.212 15.4 19.4 8.42 1.37%Sand-Slime Tailing 0.059 119.0 1.09 0.51 0.57 1 1.36 20.954 291.26 24.53 25 1.47% 2.5 47% 1.64 0.06 1.58 1 0.88 0.06 0.97 1.0 0.051 38.90 63.43 0.092 1.79 0.93 0.29 0.80 1.08 1.0 0.039 2.72 66.83 0.108 3.80 2.80 2 1.362408 21.119 2.0219 24.528
19.357 5596.49 11.9 0.188 11.8 28.4 12.32 1.58%Sand-Slime Tailing 0.059 119.0 1.10 0.52 0.58 1 1.37 16.059 223.22 18.93 19 1.74% 2.6 47% 1.65 0.06 1.59 1 0.88 0.05 0.97 1.0 0.051 36.94 55.88 0.083 1.63 0.93 0.25 0.80 1.08 1.0 0.039 3.56 67.47 0.109 3.79 2.71 2 1.366753 16.302 1.5607 18.934
19.521 5596.33 10.5 0.213 10.3 42.0 18.18 2.02%Slime Tailings 0.057 113.1 1.10 0.52 0.58 1 1.36 13.972 194.20 16.64 16 2.26% 2.8 71% 1.66 0.07 1.59 1 0.88 0.05 0.97 1.0 0.051 35.88 52.52 0.080 1.56 0.93 0.24 0.80 1.08 1.0 0.040 4.40 73.27 0.117 4.03 2.79 2 1.359102 14.327 1.3717 16.641
19.685 5596.17 10.7 0.236 10.3 60.5 26.21 2.21%Slime Tailings 0.057 113.1 1.11 0.53 0.59 1 1.35 13.907 193.31 16.75 16 2.47% 2.8 71% 1.67 0.07 1.60 1 0.88 0.05 0.97 1.0 0.051 35.92 52.66 0.080 1.56 0.93 0.24 0.80 1.08 1.0 0.040 4.57 76.54 0.122 4.17 2.86 2 1.351548 14.418 1.3804 16.745
19.849 5596.00 13.4 0.216 13.1 40.2 17.42 1.62%Sand-Slime Tailing 0.059 119.0 1.12 0.53 0.59 1 1.34 17.596 244.59 20.83 21 1.77% 2.6 47% 1.68 0.08 1.60 1 0.88 0.05 0.97 1.0 0.051 37.61 58.44 0.086 1.67 0.93 0.26 0.80 1.08 1.0 0.040 3.36 70.06 0.112 3.80 2.74 2 1.343236 17.933 1.717 20.829
20.013 5595.84 12.8 0.185 12.6 40.5 17.54 1.44%Sand-Slime Tailing 0.059 119.0 1.13 0.54 0.59 1 1.34 16.808 233.63 19.91 20 1.58% 2.6 47% 1.69 0.08 1.61 1 0.88 0.05 0.97 1.0 0.052 37.29 57.20 0.085 1.65 0.93 0.26 0.80 1.08 1.0 0.040 3.31 65.95 0.107 3.58 2.61 2 1.335039 17.146 1.6415 19.913
20.177 5595.67 14.7 0.185 14.4 48.7 21.12 1.26%Sand-Slime Tailing 0.059 119.0 1.14 0.54 0.60 1 1.32 18.997 264.05 22.53 23 1.37% 2.5 47% 1.70 0.09 1.61 1 0.87 0.05 0.97 1.0 0.052 38.20 60.73 0.089 1.72 0.93 0.27 0.80 1.08 1.0 0.040 2.84 63.94 0.104 3.47 2.59 2 1.321958 19.399 1.8572 22.531
20.341 5595.51 13.5 0.185 13.4 28.8 12.46 1.37%Sand-Slime Tailing 0.059 119.0 1.15 0.55 0.60 1 1.32 17.608 244.76 20.73 20 1.49% 2.6 47% 1.71 0.09 1.62 1 0.87 0.05 0.97 1.0 0.052 37.57 58.30 0.086 1.66 0.93 0.26 0.80 1.07 1.0 0.040 3.15 65.23 0.106 3.49 2.58 2 1.318983 17.845 1.7085 20.726
Liquef_SeismicSettle_30Aug2015.xls Page 5 of 36
Energy Fuels Resources (USA) Inc.
White Mesa MillLiquefaction Analyses
Data File: 13-52106_SP2W3-BSC-CPT 5613.80 Water surface elevation during CPT investigation (f5615.72 Ground Surface Elevation at time of CPT (ft amsl)Location: White Mesa 2013 CPT Investigation 0.15 5607.44 Water surface elevation at t0 (ft amsl)5626.27 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl)
..\..\..\6.2.3 Field Data\2013 Field Investigation\Conetec Dat 5.5 5597.74 Water surface elevation at t1 (ft amsl) 0.50 Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after pla ###### 5626.02 5625.77 0.50 0.055 110 0.028 0.014 0.00 0.00 0.028 0.014
Tailings Sands 1.69 5592.74 Water surface elevation at t2 (ft amsl)3.50 Thickness of Water Storage/Rooting Zone (ft) ###### 5624.02 5622.27 3.50 0.054 107 0.215 0.121 0.00 0.00 0.215 0.121
Tailings Sand-Slimes 4.00 Thickness of High Compaction Layer (ft)###### 5620.27 5618.27 4.00 0.060 120 0.454 0.334 0.00 0.00 0.454 0.334
Tailings Slimes 1.44 2.55 Thickness of Random/Platform Fill on on top of existing interim cover (ft) ###### 5617 5615.72 2.55 0.050 101 0.582 0.518 0.00 0.00 0.582 0.518
Interim Cover 0.47 1164.98 Additional Stress due to Final Cover Placement, ΔσFC (psf)
Cells Requiring User Input/Manipulation 2.21 2.21 7.51 5592.74 Elevation of bottom of tailings (liner) (ft amsl)
rd Cσ Kσ Ka rd Dr f Kσ Ka Avg CN qc1 qc1 qc1N
(ft) (ft amsl) TSF TSF TSF (ft) PSI (%) (tcf) (pcf) (tsf)(tsf)(tsf) 1=Yes TSF MPa % (tsf)(tsf)(tsf) 1=Yes FoS TSF MPa
0=No 0=No
0.164 5615.56 7.7 0.125 7.7 1.9 0.82 1.62%Interim Cover 0.050 100.7 0.01 0.00 0.01 0 1.70 13.124 182.42 15.27 935 1.62% 1.5 51% 0.59 0.00 0.59 0 1.00 0.05 1.02 1.0 0.059 35.68 50.94 0.078 1.33 0.98 0.23 0.80 2.53 1.0 0.017 1.00 15.27 0.063 152.05 76.69 2 1.7 13.144 1.2584 15.266
0.328 5615.39 34.3 0.207 34.2 7.6 3.28 0.60%Interim Cover 0.050 100.7 0.02 0.00 0.02 0 1.70 58.208 809.09 67.70 2074 0.60% 1.0 51% 0.60 0.00 0.60 0 1.00 0.08 1.03 1.0 0.060 54.08 121.78 0.183 3.08 0.97 0.48 0.76 2.56 1.0 0.017 1.00 67.70 0.109 132.00 67.54 2 1.7 58.288 5.5805 67.698
0.492 5615.23 60.2 0.548 60.2 5.7 2.48 0.91%Interim Cover 0.050 100.7 0.02 0.00 0.02 0 1.70 102.306 ###### 118.89 2429 0.91% 1.2 51% 0.61 0.00 0.61 0 1.00 0.12 1.04 1.0 0.060 72.04 190.94 0.778 12.90 0.97 0.63 0.69 3.05 1.0 0.014 1.00 118.89 0.236 191.11 102.00 2 1.7 102.37 9.8006 118.893
0.656 5615.06 93.8 1.118 93.8 6.5 2.81 1.19%Interim Cover 0.050 100.7 0.03 0.00 0.03 0 1.70 159.409 ###### 185.22 2838 1.19% 1.3 51% 0.62 0.00 0.62 0 1.00 0.22 1.07 1.0 0.062 95.32 280.55 1.000 16.09 0.97 0.79 0.61 3.60 1.0 0.012 1.00 185.22 1.000 606.81 311.45 2 1.7 159.48 15.268 185.224
0.820 5614.90 158.1 1.774 158.0 7.2 3.13 1.12%Interim Cover 0.050 100.7 0.04 0.00 0.04 0 1.70 268.634 ###### 312.09 3826 1.12% 1.3 51% 0.62 0.00 0.62 0 1.00 0.30 1.10 1.0 0.063 139.84 451.93 1.000 15.77 0.97 1.02 0.60 3.37 1.0 0.013 1.00 312.09 1.000 485.64 250.71 2 1.7 268.71 25.726 312.091
0.984 5614.74 233.5 2.580 233.4 9.6 4.17 1.11%Interim Cover 0.050 100.7 0.05 0.00 0.05 0 1.70 396.814 ###### 460.99 4709 1.11% 1.3 51% 0.63 0.00 0.63 0 1.00 0.30 1.09 1.0 0.063 192.10 653.09 1.000 15.83 0.97 1.24 0.60 3.13 1.0 0.014 1.00 460.99 1.000 404.86 210.34 2 1.7 396.92 38.001 460.994
1.148 5614.57 321.1 3.237 321.1 4.7 2.05 1.01%Interim Cover 0.050 100.7 0.06 0.00 0.06 0 1.70 545.819 ###### 633.99 5551 1.01% 1.3 51% 0.64 0.00 0.64 0 1.00 0.30 1.09 1.0 0.063 252.81 886.80 1.000 15.89 0.97 1.45 0.60 2.95 1.0 0.015 1.00 633.99 1.000 347.16 181.52 2 1.7 545.87 52.262 633.994
1.312 5614.41 348.1 3.834 348.0 7.5 3.25 1.10%Interim Cover 0.050 100.7 0.07 0.00 0.07 0 1.70 591.651 ###### 687.26 5266 1.10% 1.3 51% 0.65 0.00 0.65 0 1.00 0.30 1.08 1.0 0.063 271.50 958.76 1.000 15.94 0.97 1.51 0.60 2.79 1.0 0.015 1.00 687.26 1.000 303.88 159.91 2 1.7 591.73 56.652 687.259
1.476 5614.24 325.9 3.960 325.9 6.7 2.88 1.22%Interim Cover 0.050 100.7 0.07 0.00 0.07 0 1.70 553.945 ###### 643.46 4382 1.22% 1.3 51% 0.66 0.00 0.66 0 1.00 0.30 1.08 1.0 0.063 256.13 899.58 1.000 16.00 0.97 1.46 0.60 2.66 1.0 0.016 1.00 643.46 1.000 270.22 143.11 2 1.7 554.02 53.041 643.456
1.640 5614.08 280.6 3.998 280.6 6.9 3.01 1.42%Interim Cover 0.050 100.7 0.08 0.00 0.08 0 1.70 477.020 ###### 554.12 3396 1.43% 1.4 51% 0.67 0.00 0.67 0 1.00 0.30 1.08 1.0 0.062 224.78 778.89 1.000 16.06 0.97 1.36 0.60 2.55 1.0 0.017 1.00 554.12 1.000 243.30 129.68 2 1.7 477.09 45.677 554.115
1.804 5613.92 244.2 3.918 244.1 3.6 1.54 1.60%Interim Cover 0.050 100.7 0.09 0.00 0.09 0 1.70 415.038 ###### 482.09 2686 1.61% 1.4 51% 0.67 0.00 0.67 0 1.00 0.30 1.07 1.0 0.062 199.50 681.58 1.000 16.11 0.97 1.27 0.60 2.46 1.0 0.017 1.00 482.09 1.000 221.27 118.69 2 1.7 415.08 39.739 482.085
1.968 5613.75 208.3 4.496 208.3 3.0 1.30 2.16%Interim Cover 0.050 100.7 0.10 0.00 0.10 1 1.70 354.025 ###### 411.22 2132 2.16% 1.6 51% 0.68 0.00 0.68 0 1.00 0.30 1.07 1.0 0.062 174.63 585.84 1.000 16.18 0.97 1.17 0.60 2.39 1.0 0.018 1.00 411.22 1.000 206.05 111.11 2 1.7 354.06 33.897 411.216
2.133 5613.59 171.3 4.306 171.3 1.4 0.62 2.51%Interim Cover 0.050 100.7 0.11 0.01 0.10 1 1.70 291.278 ###### 338.32 1699 2.51% 1.6 51% 0.69 0.00 0.69 0 1.00 0.30 1.07 1.0 0.062 149.05 487.37 1.000 16.25 0.97 1.06 0.60 2.36 1.0 0.018 1.00 338.32 1.000 199.70 107.97 2 1.7 291.29 27.888 338.319
2.297 5613.42 146.4 3.625 146.4 0.5 0.21 2.48%Interim Cover 0.050 100.7 0.12 0.01 0.10 1 1.70 248.795 ###### 288.97 1407 2.48% 1.6 51% 0.70 0.00 0.70 0 1.00 0.30 1.06 1.0 0.061 131.73 420.69 1.000 16.32 0.97 0.98 0.60 2.33 1.0 0.018 1.00 289.10 1.000 193.74 105.03 2 1.7 248.8 23.82 288.966
2.461 5613.26 130.5 2.022 130.5 -0.0 -0.01 1.55%Interim Cover 0.050 100.7 0.12 0.02 0.11 1 1.70 221.918 ###### 257.74 1218 1.55% 1.5 51% 0.71 0.00 0.71 0 1.00 0.30 1.06 1.0 0.061 120.77 378.52 1.000 16.38 0.97 0.93 0.60 2.30 1.0 0.019 1.00 257.74 1.000 188.12 102.25 2 1.7 221.92 21.246 257.744
2.625 5613.10 117.5 1.895 117.5 0.5 0.22 1.61%Interim Cover 0.050 100.7 0.13 0.02 0.11 1 1.70 199.801 ###### 232.06 1065 1.61% 1.5 51% 0.71 0.00 0.71 0 1.00 0.30 1.06 1.0 0.061 111.76 343.82 1.000 16.45 0.97 0.88 0.60 2.28 1.0 0.019 1.00 232.06 1.000 182.83 99.64 2 1.7 199.81 19.129 232.063
2.789 5612.93 87.2 1.616 87.2 -0.2 -0.08 1.85%Interim Cover 0.050 100.7 0.14 0.03 0.11 1 1.70 148.240 ###### 172.17 768 1.86% 1.6 51% 0.72 0.00 0.72 0 0.99 0.20 1.03 1.0 0.059 90.74 262.91 1.000 16.81 0.97 0.76 0.62 2.16 1.0 0.020 1.00 172.17 1.000 177.83 97.32 2 1.7 148.24 14.192 172.170
2.953 5612.77 56.6 1.213 56.6 -0.3 -0.11 2.14%Interim Cover 0.050 100.7 0.15 0.03 0.12 1 1.70 96.186 ###### 111.71 484 2.15% 1.7 51% 0.73 0.00 0.73 0 0.99 0.12 1.02 1.0 0.059 69.52 181.23 0.556 9.50 0.97 0.61 0.69 1.84 1.0 0.023 1.06 118.91 0.236 40.91 25.21 2 1.7 96.183 9.2086 111.711
3.117 5612.60 41.8 0.990 41.8 -0.7 -0.32 2.37%Interim Cover 0.050 100.7 0.16 0.04 0.12 1 1.70 71.043 987.50 82.50 348 2.38% 1.8 51% 0.74 0.00 0.74 0 0.99 0.09 1.01 1.0 0.058 59.27 141.78 0.238 4.10 0.97 0.52 0.74 1.68 1.0 0.025 1.14 94.25 0.158 26.62 15.36 2 1.7 71.035 6.8009 82.503
3.281 5612.44 29.4 0.781 29.4 -1.4 -0.59 2.66%Sand-Slime Tailing 0.059 119.0 0.17 0.04 0.12 1 1.70 49.980 694.72 58.03 235 2.67% 2.0 47% 0.75 0.00 0.75 0 0.99 0.08 1.01 1.0 0.058 50.65 108.69 0.157 2.72 0.97 0.44 0.78 1.53 1.0 0.028 1.27 73.95 0.118 19.10 10.91 2 1.7 49.966 4.7837 58.032
3.445 5612.28 24.9 0.524 24.9 -1.2 -0.53 2.10%Sand-Slime Tailing 0.059 119.0 0.18 0.05 0.13 1 1.70 42.364 588.86 49.19 192 2.12% 1.9 47% 0.76 0.00 0.76 0 0.99 0.07 1.01 1.0 0.058 47.55 96.74 0.137 2.37 0.97 0.40 0.80 1.47 1.0 0.029 1.24 60.94 0.101 15.82 9.10 2 1.7 42.351 4.0547 49.188
3.609 5612.11 21.4 0.387 21.4 -1.7 -0.72 1.81%Sand-Slime Tailing 0.059 119.0 0.19 0.05 0.13 1 1.70 36.363 505.45 42.21 159 1.83% 2.0 47% 0.77 0.00 0.77 0 0.99 0.07 1.01 1.0 0.058 45.11 87.32 0.123 2.13 0.97 0.38 0.80 1.45 1.0 0.029 1.24 52.38 0.093 14.12 8.13 2 1.7 36.345 3.4797 42.213
3.773 5611.95 13.1 0.327 13.2 -2.1 -0.91 2.49%Slime Tailings 0.057 113.1 0.20 0.06 0.14 1 1.70 22.355 310.73 25.94 94 2.53% 2.2 71% 0.78 0.00 0.78 0 0.99 0.06 1.01 1.0 0.058 39.12 65.06 0.094 1.63 0.97 0.29 0.80 1.44 1.0 0.030 1.69 43.72 0.086 12.68 7.15 2 1.7 22.333 2.1381 25.938
3.937 5611.78 9.9 0.171 10.0 -1.5 -0.64 1.72%Sand-Slime Tailing 0.059 119.0 0.21 0.06 0.14 1 1.70 16.915 235.12 19.63 68 1.76% 2.2 47% 0.79 0.00 0.79 0 0.99 0.05 1.00 1.0 0.057 37.19 56.81 0.084 1.47 0.97 0.26 0.80 1.43 1.0 0.030 1.65 32.48 0.077 10.94 6.21 2 1.7 16.899 1.6179 19.628
4.101 5611.62 9.9 0.106 9.9 1.7 0.74 1.07%Sand-Slime Tailing 0.059 119.0 0.22 0.07 0.15 1 1.70 16.881 234.65 19.63 66 1.09% 2.1 47% 0.80 0.00 0.80 0 0.99 0.05 1.00 1.0 0.057 37.19 56.81 0.084 1.47 0.97 0.26 0.80 1.42 1.0 0.030 1.41 27.67 0.073 10.05 5.76 2 1.7 16.899 1.6179 19.627
4.265 5611.45 13.3 0.031 13.3 3.7 1.60 0.23%Sand-Slime Tailing 0.059 119.0 0.22 0.07 0.15 1 1.70 22.593 314.04 26.29 86 0.24% 1.6 47% 0.81 0.00 0.81 0 0.99 0.06 1.00 1.0 0.057 39.52 65.81 0.095 1.65 0.97 0.30 0.80 1.42 1.0 0.030 1.00 26.28 0.072 9.59 5.62 2 1.7 22.632 2.1668 26.286
4.429 5611.29 10.7 0.042 10.7 2.1 0.90 0.39%Sand-Slime Tailing 0.059 119.0 0.23 0.08 0.16 1 1.70 18.241 253.55 21.21 67 0.40% 1.8 47% 0.82 0.00 0.82 0 0.99 0.05 1.00 1.0 0.057 37.74 58.95 0.087 1.52 0.97 0.27 0.80 1.41 1.0 0.030 1.13 24.06 0.070 9.07 5.29 2 1.7 18.263 1.7485 21.211
4.593 5611.13 8.5 0.048 8.4 6.1 2.62 0.57%Sand-Slime Tailing 0.059 119.0 0.24 0.08 0.16 1 1.70 14.314 198.96 16.70 51 0.58% 2.0 47% 0.83 0.00 0.83 0 0.98 0.05 1.00 1.0 0.057 36.16 52.86 0.080 1.41 0.96 0.24 0.80 1.40 1.0 0.030 1.33 22.15 0.068 8.61 5.01 2 1.7 14.378 1.3766 16.699
4.757 5610.96 7.9 0.031 7.8 13.0 5.65 0.39%Sand-Slime Tailing 0.059 119.0 0.25 0.09 0.17 1 1.70 13.311 185.02 15.62 46 0.40% 2.0 47% 0.84 0.00 0.84 0 0.98 0.05 1.00 1.0 0.057 35.78 51.40 0.079 1.38 0.96 0.23 0.80 1.39 1.0 0.031 1.28 20.02 0.067 8.16 4.77 2 1.7 13.449 1.2876 15.621
4.921 5610.80 7.2 0.093 7.1 20.3 8.78 1.30%Slime Tailings 0.057 113.1 0.26 0.09 0.17 1 1.70 11.985 166.59 14.17 41 1.35% 2.3 71% 0.85 0.00 0.85 0 0.98 0.05 1.00 1.0 0.057 35.02 49.19 0.077 1.35 0.96 0.22 0.80 1.38 1.0 0.031 1.94 27.50 0.073 8.70 5.03 2 1.7 12.2 1.168 14.170
5.085 5610.63 7.1 0.130 7.0 25.9 11.21 1.82%Slime Tailings 0.057 113.1 0.27 0.10 0.17 1 1.70 11.866 164.94 14.10 40 1.89% 2.4 71% 0.86 0.00 0.86 0 0.98 0.05 1.00 1.0 0.057 35.00 49.10 0.077 1.35 0.96 0.22 0.80 1.38 1.0 0.031 2.30 32.49 0.077 8.98 5.17 2 1.7 12.141 1.1623 14.101
5.249 5610.47 8.4 0.108 8.2 23.7 10.28 1.29%Sand-Slime Tailing 0.059 119.0 0.28 0.10 0.18 1 1.70 14.008 194.71 16.56 45 1.33% 2.3 47% 0.86 0.00 0.86 0 0.98 0.05 1.00 1.0 0.057 36.11 52.67 0.080 1.41 0.96 0.23 0.80 1.37 1.0 0.031 1.82 30.12 0.075 8.53 4.97 2 1.7 14.26 1.3652 16.562
5.413 5610.31 18.2 0.125 18.1 15.6 6.76 0.69%Sand-Slime Tailing 0.059 119.0 0.29 0.11 0.18 1 1.70 30.804 428.18 35.97 98 0.70% 1.8 47% 0.87 0.00 0.87 0 0.98 0.06 1.00 1.0 0.057 42.92 78.89 0.111 1.96 0.96 0.35 0.80 1.36 1.0 0.031 1.12 40.39 0.084 9.26 5.61 2 1.7 30.97 2.965 35.969
5.577 5610.14 20.7 0.144 20.7 2.2 0.94 0.69%Sand-Slime Tailing 0.059 119.0 0.30 0.11 0.19 1 1.70 35.241 489.85 40.96 109 0.70% 1.8 47% 0.88 0.00 0.88 0 0.98 0.07 1.00 1.0 0.057 44.67 85.62 0.121 2.13 0.96 0.37 0.80 1.36 1.0 0.031 1.10 44.95 0.087 9.45 5.79 2 1.7 35.264 3.3762 40.957
5.741 5609.98 20.9 0.185 20.9 1.2 0.52 0.89%Sand-Slime Tailing 0.059 119.0 0.31 0.12 0.19 1 1.70 35.462 492.92 41.20 107 0.90% 1.9 47% 0.89 0.00 0.89 0 0.98 0.07 1.00 1.0 0.056 44.75 85.95 0.121 2.14 0.96 0.37 0.80 1.35 1.0 0.031 1.15 47.49 0.090 9.45 5.80 2 1.7 35.475 3.3964 41.202
5.905 5609.81 17.0 0.216 17.0 -0.2 -0.07 1.27%Sand-Slime Tailing 0.059 119.0 0.32 0.12 0.20 1 1.70 28.849 401.00 33.50 84 1.30% 2.0 47% 0.90 0.00 0.90 0 0.98 0.06 1.00 1.0 0.056 42.05 75.56 0.107 1.89 0.96 0.33 0.80 1.34 1.0 0.032 1.35 45.39 0.088 9.05 5.47 2 1.7 28.847 2.7618 33.504
6.069 5609.65 16.4 0.222 16.4 0.0 0.01 1.35%Sand-Slime Tailing 0.059 119.0 0.33 0.13 0.20 1 1.70 27.880 387.53 32.38 80 1.38% 2.1 47% 0.91 0.00 0.91 0 0.98 0.06 1.00 1.0 0.056 41.66 74.04 0.105 1.86 0.96 0.33 0.80 1.34 1.0 0.032 1.41 45.77 0.088 8.88 5.37 2 1.7 27.88 2.6693 32.381
6.234 5609.49 12.5 0.167 12.5 0.5 0.23 1.33%Sand-Slime Tailing 0.059 119.0 0.34 0.13 0.21 1 1.70 21.267 295.61 24.71 59 1.37% 2.2 47% 0.92 0.00 0.92 0 0.98 0.06 1.00 1.0 0.056 38.97 63.67 0.092 1.64 0.96 0.29 0.80 1.33 1.0 0.032 1.61 39.71 0.083 8.18 4.91 2 1.7 21.273 2.0366 24.707
6.398 5609.32 11.4 0.156 11.4 5.1 2.22 1.37%Sand-Slime Tailing 0.059 119.0 0.35 0.14 0.21 1 1.70 19.312 268.44 22.49 52 1.41% 2.2 47% 0.93 0.00 0.93 0 0.97 0.05 1.00 1.0 0.056 38.19 60.68 0.089 1.58 0.96 0.27 0.80 1.32 1.0 0.032 1.73 38.83 0.082 7.94 4.76 2 1.7 19.366 1.8541 22.493
6.562 5609.16 8.9 0.092 8.8 14.8 6.41 1.03%Sand-Slime Tailing 0.059 119.0 0.36 0.14 0.22 1 1.70 14.977 208.18 17.58 40 1.08% 2.3 47% 0.94 0.00 0.94 0 0.97 0.05 1.00 1.0 0.056 36.47 54.04 0.082 1.46 0.96 0.24 0.80 1.32 1.0 0.032 1.80 31.72 0.076 7.21 4.33 2 1.7 15.134 1.4489 17.577
6.726 5608.99 7.1 0.054 7.0 16.9 7.31 0.76%Sand-Slime Tailing 0.059 119.0 0.37 0.15 0.22 1 1.70 11.832 164.46 13.95 30 0.81% 2.3 47% 0.95 0.00 0.95 0 0.97 0.05 1.00 1.0 0.056 35.19 49.14 0.077 1.37 0.96 0.22 0.80 1.31 1.0 0.032 1.90 26.50 0.072 6.66 4.01 2 1.7 12.011 1.1499 13.950
6.890 5608.83 6.9 0.094 6.8 23.9 10.34 1.36%Slime Tailings 0.057 113.1 0.38 0.16 0.22 1 1.70 11.509 159.98 13.66 29 1.44% 2.4 71% 0.96 0.00 0.96 0 0.97 0.05 0.99 1.0 0.056 34.84 48.51 0.076 1.36 0.96 0.21 0.80 1.31 1.0 0.032 2.45 33.50 0.078 7.07 4.21 2 1.7 11.762 1.1261 13.661
7.054 5608.67 6.6 0.021 6.4 33.6 14.56 0.32%Sand-Slime Tailing 0.059 119.0 0.39 0.16 0.23 1 1.70 10.880 151.23 13.05 27 0.34% 2.2 47% 0.97 0.00 0.97 0 0.97 0.05 0.99 1.0 0.056 34.88 47.93 0.076 1.35 0.96 0.21 0.80 1.30 1.0 0.032 1.59 20.81 0.067 5.99 3.67 2 1.7 11.237 1.0758 13.051
7.218 5608.50 8.6 0.044 8.4 29.9 12.94 0.51%Sand-Slime Tailing 0.059 119.0 0.40 0.17 0.23 1 1.70 14.246 198.02 16.91 35 0.54% 2.1 47% 0.98 0.00 0.98 0 0.97 0.05 0.99 1.0 0.056 36.23 53.15 0.081 1.45 0.96 0.24 0.80 1.30 1.0 0.033 1.55 26.22 0.072 6.26 3.86 2 1.7 14.563 1.3942 16.914
7.382 5608.34 6.9 0.052 6.7 30.0 13.02 0.75%Sand-Slime Tailing 0.059 119.0 0.41 0.17 0.24 1 1.70 11.424 158.79 13.64 27 0.80% 2.3 47% 0.99 0.00 0.99 0 0.97 0.05 0.99 1.0 0.056 35.08 48.72 0.076 1.37 0.96 0.21 0.80 1.29 1.0 0.033 2.03 27.65 0.073 6.25 3.81 2 1.7 11.743 1.1243 13.639
7.546 5608.17 6.5 0.057 6.3 35.9 15.54 0.88%Slime Tailings 0.057 113.1 0.42 0.18 0.24 1 1.70 10.659 148.16 12.82 25 0.94% 2.4 71% 1.00 0.00 1.00 0 0.97 0.05 0.99 1.0 0.056 34.55 47.37 0.075 1.35 0.96 0.21 0.80 1.29 1.0 0.033 2.27 29.12 0.074 6.24 3.80 2 1.7 11.04 1.0569 12.822
7.710 5608.01 7.0 0.066 6.9 29.2 12.65 0.94%Sand-Slime Tailing 0.059 119.0 0.43 0.18 0.25 1 1.70 11.645 161.87 13.88 27 1.00% 2.4 47% 1.01 0.00 1.01 0 0.97 0.05 0.99 1.0 0.055 35.17 49.06 0.077 1.38 0.96 0.22 0.80 1.28 1.0 0.033 2.23 30.97 0.076 6.26 3.82 2 1.7 11.955 1.1446 13.885
7.874 5607.85 6.7 0.068 6.5 36.4 15.76 1.02%Slime Tailings 0.057 113.1 0.44 0.19 0.25 1 1.70 10.982 152.65 13.20 25 1.09% 2.4 71% 1.02 0.00 1.02 0 0.96 0.05 0.99 1.0 0.055 34.69 47.89 0.075 1.36 0.96 0.21 0.80 1.28 1.0 0.033 2.42 31.93 0.077 6.22 3.79 2 1.7 11.368 1.0884 13.203
8.038 5607.68 7.0 0.101 6.8 40.5 17.55 1.44%Slime Tailings 0.057 113.1 0.45 0.19 0.26 1 1.70 11.526 160.21 13.89 26 1.53% 2.5 71% 1.03 0.00 1.03 0 0.96 0.05 0.99 1.0 0.055 34.92 48.81 0.076 1.38 0.96 0.22 0.80 1.28 1.0 0.033 2.73 37.94 0.082 6.52 3.95 2 1.7 11.956 1.1446 13.886
8.202 5607.52 7.2 0.053 7.0 32.9 14.27 0.74%Sand-Slime Tailing 0.059 119.0 0.46 0.20 0.26 1 1.70 11.866 164.94 14.19 26 0.79% 2.3 47% 1.04 0.00 1.04 0 0.96 0.05 0.99 1.0 0.055 35.28 49.47 0.077 1.40 0.96 0.22 0.80 1.27 1.0 0.033 2.09 29.59 0.075 5.86 3.63 2 1.7 12.216 1.1695 14.188
8.366 5607.35 8.3 0.060 8.1 33.6 14.56 0.72%Sand-Slime Tailing 0.059 119.0 0.47 0.20 0.26 1 1.70 13.719 190.69 16.35 30 0.77% 2.3 47% 1.05 0.00 1.05 0 0.96 0.05 0.99 1.0 0.055 36.04 52.38 0.080 1.45 0.96 0.23 0.80 1.27 1.0 0.033 1.90 31.09 0.076 5.86 3.65 2 1.7 14.076 1.3476 16.348
8.530 5607.19 8.4 0.039 8.2 29.3 12.71 0.47%Sand-Slime Tailing 0.059 119.0 0.48 0.21 0.27 1 1.70 13.923 193.53 16.53 29 0.49% 2.2 47% 1.06 0.00 1.06 0 0.96 0.05 0.99 1.0 0.055 36.10 52.63 0.080 1.46 0.96 0.23 0.80 1.26 1.0 0.033 1.67 27.61 0.073 5.54 3.50 2 1.7 14.234 1.3628 16.532
8.694 5607.03 9.0 0.046 8.9 16.0 6.93 0.51%Sand-Slime Tailing 0.059 119.0 0.49 0.21 0.27 1 1.70 15.130 210.31 17.77 31 0.54% 2.2 47% 1.07 0.00 1.07 0 0.96 0.05 0.99 1.0 0.055 36.53 54.30 0.082 1.49 0.96 0.24 0.80 1.26 1.0 0.033 1.65 29.41 0.074 5.56 3.52 2 1.7 15.3 1.4648 17.770
8.858 5606.86 8.9 0.043 8.8 19.3 8.37 0.48%Sand-Slime Tailing 0.059 119.0 0.50 0.22 0.28 1 1.70 14.909 207.24 17.55 30 0.51% 2.2 47% 1.08 0.00 1.08 0 0.96 0.05 0.99 1.0 0.055 36.46 54.01 0.081 1.49 0.95 0.24 0.80 1.25 1.0 0.034 1.66 29.14 0.074 5.45 3.47 2 1.7 15.114 1.447 17.554
9.022 5606.70 9.0 0.081 8.9 11.3 4.91 0.90%Sand-Slime Tailing 0.059 119.0 0.50 0.22 0.28 1 1.70 15.130 210.31 17.71 30 0.96% 2.3 47% 1.09 0.00 1.09 0 0.96 0.05 0.99 1.0 0.055 36.51 54.23 0.082 1.49 0.95 0.24 0.80 1.25 1.0 0.034 2.04 36.18 0.080 5.79 3.64 2 1.7 15.25 1.4601 17.712
9.186 5606.53 10.5 0.074 10.5 12.7 5.50 0.70%Sand-Slime Tailing 0.059 119.0 0.51 0.23 0.29 1 1.70 17.782 247.17 20.81 35 0.74% 2.2 47% 1.10 0.00 1.10 0 0.96 0.05 0.99 1.0 0.055 37.60 58.41 0.086 1.58 0.95 0.26 0.80 1.24 1.0 0.034 1.70 35.42 0.080 5.65 3.61 2 1.7 17.917 1.7154 20.809
9.350 5606.37 8.8 0.087 8.8 6.6 2.84 0.98%Sand-Slime Tailing 0.059 119.0 0.52 0.23 0.29 1 1.70 14.960 207.94 17.46 28 1.05% 2.4 47% 1.11 0.00 1.11 0 0.96 0.05 0.99 1.0 0.055 36.42 53.88 0.081 1.49 0.95 0.24 0.80 1.24 1.0 0.034 2.18 38.09 0.082 5.72 3.61 2 1.7 15.03 1.4389 17.456
9.514 5606.21 6.8 0.122 6.7 23.8 10.30 1.78%Slime Tailings 0.057 113.1 0.53 0.24 0.30 1 1.70 11.390 158.32 13.52 21 1.93% 2.6 71% 1.12 0.00 1.12 0 0.95 0.05 0.99 1.0 0.054 34.80 48.32 0.076 1.39 0.95 0.21 0.80 1.24 1.0 0.034 3.44 46.54 0.089 6.13 3.76 2 1.7 11.642 1.1146 13.522
9.678 5606.04 8.3 0.124 8.0 40.2 17.44 1.50%Slime Tailings 0.057 113.1 0.54 0.24 0.30 1 1.70 13.668 189.99 16.37 26 1.60% 2.5 71% 1.13 0.00 1.13 0 0.95 0.05 0.99 1.0 0.054 35.79 52.16 0.080 1.46 0.95 0.23 0.80 1.23 1.0 0.034 2.79 45.63 0.088 5.99 3.73 2 1.7 14.095 1.3495 16.371
9.842 5605.88 13.0 0.032 12.8 32.9 14.24 0.25%Sand-Slime Tailing 0.059 119.0 0.55 0.25 0.31 1 1.70 21.794 302.94 25.72 41 0.26% 2.0 47% 1.14 0.00 1.14 0 0.95 0.06 0.98 1.0 0.054 39.32 65.04 0.094 1.73 0.95 0.29 0.80 1.23 1.0 0.034 1.25 32.26 0.077 5.16 3.44 2 1.7 22.143 2.1199 25.717
10.006 5605.71 14.0 0.141 13.9 7.1 3.09 1.01%Sand-Slime Tailing 0.059 119.0 0.56 0.25 0.31 1 1.70 23.647 328.69 27.55 43 1.05% 2.2 47% 1.14 0.00 1.14 0 0.95 0.06 0.98 1.0 0.054 39.96 67.52 0.097 1.79 0.95 0.30 0.80 1.23 1.0 0.034 1.71 47.02 0.089 5.90 3.84 2 1.7 23.723 2.2712 27.553
10.170 5605.55 8.3 0.114 8.2 6.4 2.78 1.38%Sand-Slime Tailing 0.059 119.0 0.57 0.26 0.31 1 1.70 13.957 194.00 16.29 24 1.48% 2.5 47% 1.15 0.00 1.15 0 0.95 0.05 0.99 1.0 0.054 36.01 52.30 0.080 1.47 0.95 0.23 0.80 1.22 1.0 0.034 2.79 45.51 0.088 5.73 3.60 2 1.7 14.025 1.3428 16.289
10.335 5605.39 8.7 0.102 8.7 10.1 4.39 1.17%Sand-Slime Tailing 0.059 119.0 0.58 0.26 0.32 1 1.70 14.722 204.64 17.22 25 1.25% 2.4 47% 1.16 0.00 1.16 0 0.95 0.05 0.98 1.0 0.054 36.34 53.57 0.081 1.50 0.95 0.24 0.80 1.22 1.0 0.034 2.52 43.44 0.086 5.54 3.52 2 1.7 14.829 1.4198 17.223
10.499 5605.22 23.1 0.120 23.1 9.6 4.17 0.52%Sand-Slime Tailing 0.059 119.0 0.59 0.27 0.32 1 1.70 39.219 545.14 45.67 70 0.53% 1.9 47% 1.17 0.00 1.17 0 0.95 0.07 0.98 1.0 0.054 46.32 91.99 0.130 2.42 0.95 0.39 0.80 1.22 1.0 0.034 1.17 53.57 0.094 5.98 4.20 2 1.7 39.321 3.7646 45.669
10.663 5605.06 24.0 0.124 23.9 8.7 3.75 0.52%Sand-Slime Tailing 0.059 119.0 0.60 0.27 0.33 1 1.70 40.647 564.99 47.32 71 0.53% 1.9 47% 1.18 0.00 1.18 0 0.95 0.07 0.98 1.0 0.054 46.90 94.21 0.133 2.49 0.95 0.40 0.80 1.21 1.0 0.035 1.17 55.14 0.096 5.97 4.23 2 1.7 40.739 3.9003 47.316
10.827 5604.89 25.3 0.175 25.3 8.6 3.72 0.69%Sand-Slime Tailing 0.059 119.0 0.61 0.28 0.33 1 1.70 42.925 596.66 49.96 74 0.71% 1.9 47% 1.19 0.00 1.19 0 0.95 0.07 0.98 1.0 0.053 47.82 97.78 0.139 2.60 0.95 0.41 0.80 1.21 1.0 0.035 1.21 60.64 0.101 6.21 4.41 2 1.7 43.016 4.1184 49.961
10.991 5604.73 28.0 0.202 28.0 8.4 3.62 0.72%Sand-Slime Tailing 0.059 119.0 0.62 0.28 0.34 1 1.70 47.583 661.40 55.37 81 0.74% 1.9 47% 1.20 0.00 1.20 0 0.94 0.07 0.98 1.0 0.053 49.72 105.09 0.151 2.84 0.95 0.43 0.79 1.22 1.0 0.034 1.19 65.94 0.107 6.49 4.66 2 1.7 47.672 4.5641 55.368
11.155 5604.57 24.5 0.216 24.4 7.8 3.38 0.88%Sand-Slime Tailing 0.059 119.0 0.63 0.29 0.34 1 1.70 41.514 577.04 48.31 70 0.91% 2.0 47% 1.21 0.00 1.21 0 0.94 0.07 0.98 1.0 0.053 47.25 95.56 0.135 2.54 0.95 0.40 0.80 1.20 1.0 0.035 1.31 63.36 0.104 6.22 4.38 2 1.7 41.597 3.9825 48.312
11.319 5604.40 20.2 0.227 20.2 7.1 3.09 1.12%Sand-Slime Tailing 0.059 119.0 0.64 0.29 0.35 1 1.70 34.272 476.38 39.89 56 1.16% 2.1 47% 1.22 0.00 1.22 0 0.94 0.06 0.98 1.0 0.053 44.29 84.19 0.118 2.23 0.95 0.36 0.80 1.20 1.0 0.035 1.54 61.62 0.102 6.03 4.13 2 1.7 34.348 3.2884 39.893
11.483 5604.24 17.7 0.281 17.6 7.2 3.11 1.59%Sand-Slime Tailing 0.059 119.0 0.65 0.30 0.35 1 1.70 29.937 416.12 34.86 48 1.65% 2.3 47% 1.23 0.00 1.23 0 0.94 0.06 0.98 1.0 0.053 42.53 77.39 0.109 2.05 0.95 0.34 0.80 1.20 1.0 0.035 1.93 67.15 0.108 6.33 4.19 2 1.7 30.013 2.8735 34.858
11.647 5604.07 17.7 0.326 17.7 8.6 3.74 1.84%Sand-Slime Tailing 0.059 119.0 0.66 0.30 0.36 1 1.70 30.039 417.54 34.99 48 1.91% 2.3 47% 1.24 0.00 1.24 0 0.94 0.06 0.98 1.0 0.053 42.57 77.57 0.109 2.06 0.95 0.34 0.80 1.19 1.0 0.035 2.07 72.45 0.115 6.66 4.36 2 1.7 30.131 2.8847 34.995
11.811 5603.91 20.4 0.539 20.3 13.1 5.69 2.65%Sand-Slime Tailing 0.059 119.0 0.67 0.31 0.36 1 1.70 34.493 479.45 40.22 55 2.74% 2.4 47% 1.25 0.00 1.25 0 0.94 0.07 0.98 1.0 0.053 44.41 84.63 0.119 2.25 0.95 0.37 0.80 1.19 1.0 0.035 2.30 92.67 0.154 8.78 5.52 2 1.7 34.632 3.3157 40.223
11.975 5603.75 17.7 0.579 17.6 13.2 5.71 3.27%Slime Tailings 0.057 113.1 0.68 0.31 0.37 1 1.70 29.937 416.12 34.93 47 3.40% 2.5 71% 1.26 0.00 1.26 0 0.94 0.06 0.98 1.0 0.053 42.25 77.18 0.109 2.06 0.95 0.34 0.80 1.19 1.0 0.035 2.84 99.07 0.170 9.61 5.84 2 1.7 30.077 2.8795 34.932
Scaling Factor for stress ration, rm
Volumetric Strain Ratio for Site-Specific Design Ear
Equiv. Number of Uniform Strain Cycles, N
Youd, et al (2001)
Max. Horiz. Acceleration, Amax/g: 0.15
Earthquake Moment Magnitude, M: 5.5
Magnitude Scaling Factor, MSF:
Equil Pore
Pressure at time of
Conditions at t1 Liquefaction Triggering Analyses Idriss & Boulanger (2008)Equil
Pore
Pressure
at t1CN qc1 qc1 qc1N
Normalized Cone
Penetration Resistance, Qt
Normalized Friction
Ratio, Fr (%)
Total Stress
at t1 Liquefiable?
1=Yes
2=No
Cyclic Stress Ratio
Idriss and Boulanger (2008)
Max. Horiz. Acceleration, Amax/g:
Earthquake Moment Magnitude, M:
Magnitude Scaling Factor, MSF:
WHITE MESA TAILINGS REPOSITORY LIQUEFACTION AND SEISMIC SETTLEMENT ANALYSES - 2W3 Elev. at
Top of Layer (ft)
Elev. At
Midpoint of Layer (ft)
Bottom
of Layer (ft)
Thickness of Layer (ft)
Pw (u2)Pw (u2)
2013 CPT Data from ConeTec CPT Data Interpretations
fs/qt
Material Type (as determined
by fines
Unit Weight Unit Weight
Total Stress
at time of CPT
Depth
at time of CPT Elevation qt fs qc
Effective Stress at
time of CPT
Saturated
at time of CPT
Type Index, Ic FC
Effective
Stress at
t1
Saturated
at t1
Idriss & Boulanger (2008) Youd et al. (2001)
Unit Weight (tcf)
Unit Weight (pcf)
Stress at
Bottom of Layer (tsf)
Stress at
Midpoint of Layer (tsf)
Pressure
at Bottom of Layer (tsf)
Cyclic Resistance Ratio
FoS
Cyclic Stress Ratio
FoS
CSR
M=7.5,
s'v=1atm
∆qc1n qc1n-cs
(CRR)
M=7.5,
s'v=1atm
CSR
M=7.5,
s'v=1atm
Kc
High Compaction Layer
Platform/Random Fill Layer
Stress at
Bottom of Layer (tsf)
Stress at
Midpoint of Layer (tsf)FINAL COVER
Erosion Protection Layer
Water Storage/Rooting Zone Layer
qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Equil Pore
Pressure at Midpoint of Layer (tsf)
Liquef_SeismicSettle_30Aug2015.xls Page 6 of 36
Energy Fuels Resources (USA) Inc.
White Mesa MillLiquefaction Analyses
Data File: 13-52106_SP2W3-BSC-CPT 5613.80 Water surface elevation during CPT investigation (f5615.72 Ground Surface Elevation at time of CPT (ft amsl)Location: White Mesa 2013 CPT Investigation 0.15 5607.44 Water surface elevation at t0 (ft amsl)5626.27 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl)
..\..\..\6.2.3 Field Data\2013 Field Investigation\Conetec Dat 5.5 5597.74 Water surface elevation at t1 (ft amsl) 0.50 Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after pla ###### 5626.02 5625.77 0.50 0.055 110 0.028 0.014 0.00 0.00 0.028 0.014
Tailings Sands 1.69 5592.74 Water surface elevation at t2 (ft amsl)3.50 Thickness of Water Storage/Rooting Zone (ft) ###### 5624.02 5622.27 3.50 0.054 107 0.215 0.121 0.00 0.00 0.215 0.121
Tailings Sand-Slimes 4.00 Thickness of High Compaction Layer (ft)###### 5620.27 5618.27 4.00 0.060 120 0.454 0.334 0.00 0.00 0.454 0.334
Tailings Slimes 1.44 2.55 Thickness of Random/Platform Fill on on top of existing interim cover (ft) ###### 5617 5615.72 2.55 0.050 101 0.582 0.518 0.00 0.00 0.582 0.518
Interim Cover 0.47 1164.98 Additional Stress due to Final Cover Placement, ΔσFC (psf)
Cells Requiring User Input/Manipulation 2.21 2.21 7.51 5592.74 Elevation of bottom of tailings (liner) (ft amsl)
rd Cσ Kσ Ka rd Dr f Kσ Ka Avg CN qc1 qc1 qc1N
(ft) (ft amsl) TSF TSF TSF (ft) PSI (%) (tcf) (pcf) (tsf)(tsf)(tsf) 1=Yes TSF MPa % (tsf)(tsf)(tsf) 1=Yes FoS TSF MPa
0=No 0=No
Scaling Factor for stress ration, rm
Volumetric Strain Ratio for Site-Specific Design Ear
Equiv. Number of Uniform Strain Cycles, N
Youd, et al (2001)
Max. Horiz. Acceleration, Amax/g: 0.15
Earthquake Moment Magnitude, M: 5.5
Magnitude Scaling Factor, MSF:
Equil Pore
Pressure at time of
Conditions at t1 Liquefaction Triggering Analyses Idriss & Boulanger (2008)Equil
Pore
Pressure
at t1CN qc1 qc1 qc1N
Normalized Cone
Penetration Resistance, Qt
Normalized Friction
Ratio, Fr (%)
Total Stress
at t1 Liquefiable?
1=Yes
2=No
Cyclic Stress Ratio
Idriss and Boulanger (2008)
Max. Horiz. Acceleration, Amax/g:
Earthquake Moment Magnitude, M:
Magnitude Scaling Factor, MSF:
WHITE MESA TAILINGS REPOSITORY LIQUEFACTION AND SEISMIC SETTLEMENT ANALYSES - 2W3 Elev. at
Top of Layer (ft)
Elev. At
Midpoint of Layer (ft)
Bottom
of Layer (ft)
Thickness of Layer (ft)
Pw (u2)Pw (u2)
2013 CPT Data from ConeTec CPT Data Interpretations
fs/qt
Material Type (as determined
by fines
Unit Weight Unit Weight
Total Stress
at time of CPT
Depth
at time of CPT Elevation qt fs qc
Effective Stress at
time of CPT
Saturated
at time of CPT
Type Index, Ic FC
Effective
Stress at
t1
Saturated
at t1
Idriss & Boulanger (2008) Youd et al. (2001)
Unit Weight (tcf)
Unit Weight (pcf)
Stress at
Bottom of Layer (tsf)
Stress at
Midpoint of Layer (tsf)
Pressure
at Bottom of Layer (tsf)
Cyclic Resistance Ratio
FoS
Cyclic Stress Ratio
FoS
CSR
M=7.5,
s'v=1atm
∆qc1n qc1n-cs
(CRR)
M=7.5,
s'v=1atm
CSR
M=7.5,
s'v=1atm
Kc
High Compaction Layer
Platform/Random Fill Layer
Stress at
Bottom of Layer (tsf)
Stress at
Midpoint of Layer (tsf)FINAL COVER
Erosion Protection Layer
Water Storage/Rooting Zone Layer
qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Equil Pore
Pressure at Midpoint of Layer (tsf)
12.139 5603.58 11.5 0.499 11.4 15.5 6.73 4.33%Slime Tailings 0.057 113.1 0.69 0.32 0.37 1 1.70 19.448 270.33 22.78 29 4.60% 2.7 71% 1.27 0.00 1.27 0 0.94 0.05 0.98 1.0 0.053 38.02 60.80 0.089 1.68 0.95 0.28 0.80 1.18 1.0 0.035 4.36 99.37 0.171 9.56 5.62 2 1.7 19.613 1.8777 22.779
12.303 5603.42 10.9 0.321 10.7 30.3 13.15 2.94%Slime Tailings 0.057 113.1 0.70 0.32 0.37 1 1.70 18.258 253.79 21.58 27 3.14% 2.7 71% 1.28 0.00 1.28 0 0.94 0.05 0.98 1.0 0.053 37.60 59.18 0.087 1.64 0.95 0.27 0.80 1.18 1.0 0.035 3.72 80.22 0.128 7.07 4.35 2 1.7 18.58 1.7788 21.580
12.467 5603.25 10.3 0.339 10.0 56.2 24.35 3.28%Slime Tailings 0.057 113.1 0.71 0.33 0.38 1 1.70 16.949 235.59 20.38 25 3.53% 2.7 71% 1.29 0.00 1.29 0 0.93 0.05 0.98 1.0 0.053 37.18 57.56 0.085 1.61 0.95 0.26 0.80 1.18 1.0 0.035 4.13 84.08 0.135 7.39 4.50 2 1.7 17.545 1.6798 20.378
12.631 5603.09 8.7 0.195 8.6 16.5 7.14 2.25%Slime Tailings 0.057 113.1 0.72 0.33 0.38 1 1.70 14.586 202.75 17.14 21 2.45% 2.7 71% 1.30 0.00 1.30 0 0.93 0.05 0.98 1.0 0.053 36.06 53.20 0.081 1.53 0.95 0.24 0.80 1.18 1.0 0.035 3.89 66.77 0.108 5.82 3.67 2 1.7 14.761 1.4132 17.144
12.795 5602.92 9.5 0.203 9.3 29.1 12.59 2.13%Slime Tailings 0.057 113.1 0.73 0.34 0.39 1 1.70 15.878 220.70 18.80 23 2.31% 2.6 71% 1.31 0.00 1.31 0 0.93 0.05 0.98 1.0 0.053 36.63 55.43 0.083 1.57 0.95 0.25 0.80 1.17 1.0 0.036 3.58 67.31 0.108 5.79 3.68 2 1.7 16.186 1.5497 18.799
12.959 5602.76 8.1 0.206 7.9 33.3 14.44 2.53%Slime Tailings 0.057 113.1 0.73 0.34 0.39 1 1.70 13.498 187.62 16.09 19 2.78% 2.8 71% 1.32 0.00 1.32 0 0.93 0.05 0.98 1.0 0.053 35.69 51.78 0.079 1.51 0.95 0.23 0.80 1.17 1.0 0.036 4.39 70.58 0.113 5.96 3.73 2 1.7 13.852 1.3262 16.088
13.123 5602.60 7.2 0.183 6.9 46.1 19.99 2.54%Slime Tailings 0.057 113.1 0.74 0.35 0.39 1 1.70 11.764 163.52 14.23 16 2.83% 2.8 71% 1.33 0.00 1.33 0 0.93 0.05 0.98 1.0 0.053 35.04 49.28 0.077 1.46 0.94 0.22 0.80 1.17 1.0 0.036 4.85 69.02 0.111 5.79 3.63 2 1.7 12.254 1.1732 14.232
13.287 5602.43 10.7 0.106 10.4 37.6 16.29 0.99%Sand-Slime Tailing 0.059 119.0 0.75 0.35 0.40 1 1.70 17.731 246.46 21.06 25 1.07% 2.4 47% 1.34 0.00 1.34 0 0.93 0.05 0.98 1.0 0.052 37.69 58.74 0.086 1.65 0.94 0.26 0.80 1.17 1.0 0.036 2.40 50.63 0.092 4.77 3.21 2 1.7 18.13 1.7358 21.057
13.451 5602.27 16.7 0.102 16.7 10.8 4.70 0.61%Sand-Slime Tailing 0.059 119.0 0.76 0.36 0.40 1 1.70 28.339 393.91 33.05 40 0.64% 2.1 47% 1.35 0.00 1.35 0 0.93 0.06 0.97 1.0 0.052 41.89 74.94 0.106 2.03 0.94 0.33 0.80 1.16 1.0 0.036 1.52 50.29 0.092 4.70 3.37 2 1.7 28.454 2.7242 33.048
13.615 5602.10 17.2 0.121 17.1 10.8 4.69 0.70%Sand-Slime Tailing 0.059 119.0 0.77 0.36 0.41 1 1.69 29.024 403.44 33.84 40 0.74% 2.2 47% 1.36 0.00 1.36 0 0.93 0.06 0.97 1.0 0.052 42.17 76.01 0.107 2.06 0.94 0.34 0.80 1.16 1.0 0.036 1.57 53.23 0.094 4.76 3.41 2 1.694353 29.139 2.7898 33.843
13.779 5601.94 17.2 0.165 17.1 13.8 5.99 0.96%Sand-Slime Tailing 0.059 119.0 0.78 0.37 0.41 1 1.68 28.815 400.53 33.64 40 1.00% 2.2 47% 1.37 0.00 1.37 0 0.92 0.06 0.97 1.0 0.052 42.10 75.73 0.107 2.06 0.94 0.33 0.80 1.16 1.0 0.036 1.75 59.00 0.099 4.97 3.51 2 1.682138 28.96 2.7727 33.636
13.943 5601.78 17.7 0.203 17.6 15.3 6.65 1.15%Sand-Slime Tailing 0.059 119.0 0.79 0.38 0.42 1 1.67 29.281 407.00 34.19 40 1.20% 2.3 47% 1.38 0.00 1.38 0 0.92 0.06 0.97 1.0 0.052 42.29 76.49 0.108 2.08 0.94 0.34 0.80 1.16 1.0 0.036 1.86 63.68 0.104 5.16 3.62 2 1.66558 29.44 2.8186 34.193
14.107 5601.61 19.0 0.286 18.9 16.8 7.30 1.50%Sand-Slime Tailing 0.059 119.0 0.80 0.38 0.42 1 1.64 31.034 431.37 36.24 43 1.57% 2.3 47% 1.39 0.00 1.39 0 0.92 0.06 0.97 1.0 0.052 43.01 79.26 0.112 2.16 0.94 0.35 0.80 1.15 1.0 0.036 2.01 72.78 0.116 5.68 3.92 2 1.64115 31.207 2.9877 36.245
14.271 5601.45 18.8 0.300 18.7 17.6 7.62 1.59%Sand-Slime Tailing 0.059 119.0 0.81 0.39 0.43 1 1.63 30.546 424.59 35.69 42 1.67% 2.3 47% 1.39 0.00 1.39 0 0.92 0.06 0.97 1.0 0.052 42.82 78.50 0.111 2.14 0.94 0.34 0.80 1.15 1.0 0.036 2.09 74.50 0.118 5.75 3.95 2 1.631735 30.725 2.9416 35.685
14.436 5601.28 21.0 0.318 20.9 18.2 7.88 1.51%Sand-Slime Tailing 0.059 119.0 0.82 0.39 0.43 1 1.60 33.469 465.22 39.08 47 1.58% 2.3 47% 1.40 0.00 1.40 0 0.92 0.06 0.97 1.0 0.051 44.01 83.09 0.117 2.27 0.94 0.36 0.80 1.15 1.0 0.036 1.92 75.08 0.119 5.73 4.00 2 1.60217 33.651 3.2218 39.084
14.600 5601.12 18.5 0.163 18.5 9.1 3.93 0.88%Sand-Slime Tailing 0.059 119.0 0.83 0.40 0.44 1 1.61 29.799 414.21 34.72 41 0.92% 2.2 47% 1.41 0.00 1.41 0 0.92 0.06 0.97 1.0 0.051 42.48 77.19 0.109 2.12 0.94 0.34 0.80 1.15 1.0 0.036 1.68 58.41 0.099 4.69 3.40 2 1.612498 29.89 2.8617 34.716
14.764 5600.96 15.4 0.117 15.4 3.3 1.43 0.76%Sand-Slime Tailing 0.059 119.0 0.84 0.40 0.44 1 1.63 25.149 349.57 29.25 33 0.80% 2.3 47% 1.42 0.00 1.42 0 0.92 0.06 0.97 1.0 0.051 40.56 69.81 0.099 1.93 0.94 0.31 0.80 1.14 1.0 0.036 1.80 52.65 0.094 4.40 3.17 2 1.630934 25.183 2.411 29.248
14.928 5600.79 12.2 0.162 12.2 9.3 4.03 1.32%Sand-Slime Tailing 0.059 119.0 0.85 0.41 0.45 1 1.66 20.144 280.00 23.51 26 1.42% 2.5 47% 1.43 0.00 1.43 0 0.92 0.05 0.97 1.0 0.051 38.55 62.05 0.090 1.75 0.94 0.28 0.80 1.14 1.0 0.036 2.66 62.56 0.103 4.79 3.27 2 1.655194 20.24 1.9378 23.507
15.092 5600.63 11.5 0.194 11.3 27.6 11.96 1.69%Sand-Slime Tailing 0.059 119.0 0.86 0.41 0.45 1 1.65 18.644 259.15 21.98 24 1.83% 2.6 47% 1.44 0.00 1.44 0 0.91 0.05 0.97 1.0 0.051 38.01 60.00 0.088 1.71 0.94 0.27 0.80 1.14 1.0 0.036 3.15 69.15 0.111 5.11 3.41 2 1.652854 18.929 1.8123 21.985
15.256 5600.46 10.0 0.206 9.9 14.5 6.29 2.06%Slime Tailings 0.057 113.1 0.87 0.42 0.45 1 1.65 16.317 226.81 19.13 20 2.26% 2.7 71% 1.45 0.00 1.45 0 0.91 0.05 0.97 1.0 0.051 36.75 55.87 0.083 1.62 0.94 0.25 0.80 1.14 1.0 0.036 3.84 73.49 0.117 5.35 3.49 2 1.648232 16.467 1.5765 19.125
15.420 5600.30 8.6 0.137 8.4 31.8 13.77 1.60%Slime Tailings 0.057 113.1 0.88 0.42 0.46 1 1.64 13.698 190.40 16.29 17 1.78% 2.7 71% 1.46 0.00 1.46 0 0.91 0.05 0.97 1.0 0.051 35.76 52.05 0.079 1.55 0.94 0.23 0.80 1.13 1.0 0.037 3.88 63.25 0.104 4.69 3.12 2 1.636528 14.022 1.3425 16.286
15.584 5600.14 9.3 0.108 9.1 29.9 12.95 1.16%Sand-Slime Tailing 0.059 119.0 0.89 0.43 0.46 1 1.62 14.841 206.28 17.59 18 1.28% 2.6 47% 1.47 0.00 1.47 0 0.91 0.05 0.97 1.0 0.051 36.47 54.06 0.082 1.59 0.94 0.24 0.80 1.13 1.0 0.037 3.19 56.14 0.096 4.33 2.96 2 1.623697 15.144 1.4498 17.588
15.748 5599.97 8.4 0.114 8.2 29.4 12.75 1.36%Sand-Slime Tailing 0.059 119.0 0.90 0.43 0.47 1 1.61 13.195 183.41 15.67 16 1.53% 2.7 47% 1.48 0.00 1.48 0 0.91 0.05 0.97 1.0 0.051 35.80 51.47 0.079 1.54 0.94 0.23 0.80 1.13 1.0 0.037 3.75 58.82 0.099 4.40 2.97 2 1.611093 13.491 1.2916 15.669
15.912 5599.81 7.3 0.150 7.0 43.6 18.89 2.07%Slime Tailings 0.057 113.1 0.91 0.44 0.47 1 1.60 11.168 155.23 13.48 13 2.36% 2.8 71% 1.49 0.00 1.49 0 0.91 0.05 0.97 1.0 0.051 34.78 48.26 0.076 1.48 0.94 0.21 0.80 1.13 1.0 0.037 5.07 68.29 0.110 4.83 3.16 2 1.599979 11.603 1.1109 13.476
16.076 5599.64 6.8 0.155 6.5 59.5 25.76 2.27%Slime Tailings 0.057 113.1 0.92 0.44 0.48 1 1.59 10.281 142.91 12.63 12 2.62% 2.9 71% 1.50 0.00 1.50 0 0.91 0.05 0.97 1.0 0.051 34.48 47.11 0.075 1.46 0.94 0.21 0.80 1.13 1.0 0.037 5.55 70.12 0.112 4.90 3.18 2 1.589039 10.871 1.0408 12.626
16.240 5599.48 6.4 0.150 6.0 55.9 24.23 2.36%Slime Tailings 0.057 113.1 0.93 0.45 0.48 1 1.58 9.501 132.07 11.67 11 2.76% 2.9 71% 1.51 0.00 1.51 0 0.91 0.05 0.97 1.0 0.051 34.15 45.83 0.074 1.44 0.94 0.20 0.80 1.12 1.0 0.037 6.01 70.18 0.112 4.86 3.15 2 1.578267 10.052 0.9624 11.675
16.404 5599.32 6.2 0.155 5.8 62.4 27.06 2.49%Slime Tailings 0.057 113.1 0.94 0.45 0.48 1 1.57 9.139 127.04 11.32 11 2.93% 3.0 71% 1.52 0.00 1.52 0 0.90 0.05 0.97 1.0 0.051 34.03 45.36 0.073 1.44 0.94 0.19 0.80 1.12 1.0 0.037 6.31 71.49 0.114 4.90 3.17 2 1.56766 9.7505 0.9335 11.325
16.568 5599.15 6.4 0.156 6.0 61.6 26.67 2.43%Slime Tailings 0.057 113.1 0.95 0.46 0.49 1 1.56 9.390 130.52 11.60 11 2.85% 2.9 71% 1.53 0.00 1.53 0 0.90 0.05 0.97 1.0 0.051 34.13 45.73 0.074 1.45 0.94 0.20 0.80 1.12 1.0 0.037 6.14 71.27 0.114 4.85 3.15 2 1.557215 9.9883 0.9563 11.601
16.732 5598.99 6.5 0.127 6.1 59.1 25.59 1.96%Slime Tailings 0.057 113.1 0.95 0.46 0.49 1 1.55 9.436 131.16 11.62 11 2.30% 2.9 71% 1.54 0.00 1.54 0 0.90 0.05 0.97 1.0 0.051 34.13 45.76 0.074 1.45 0.94 0.20 0.80 1.12 1.0 0.037 5.62 65.37 0.106 4.49 2.97 2 1.546927 10.006 0.958 11.622
16.896 5598.82 6.4 0.116 6.1 51.0 22.11 1.81%Slime Tailings 0.057 113.1 0.96 0.47 0.50 1 1.54 9.374 130.30 11.46 11 2.13% 2.9 71% 1.55 0.00 1.55 0 0.90 0.05 0.97 1.0 0.051 34.08 45.53 0.073 1.45 0.94 0.20 0.80 1.12 1.0 0.037 5.51 63.14 0.103 4.34 2.89 2 1.536792 9.864 0.9444 11.456
17.060 5598.66 5.5 0.121 5.1 60.9 26.40 2.22%Slime Tailings 0.057 113.1 0.97 0.47 0.50 1 1.53 7.756 107.81 9.68 9 2.70% 3.0 71% 1.56 0.00 1.56 0 0.90 0.04 0.97 1.0 0.051 33.46 43.14 0.071 1.41 0.94 0.18 0.80 1.11 1.0 0.037 6.87 66.48 0.107 4.47 2.94 2 1.526807 8.3369 0.7982 9.683
17.224 5598.50 5.3 0.143 4.9 60.8 26.34 2.71%Slime Tailings 0.057 113.1 0.98 0.48 0.51 1 1.52 7.433 103.32 9.30 9 3.33% 3.1 71% 1.57 0.00 1.57 0 0.90 0.04 0.97 1.0 0.051 33.33 42.63 0.071 1.40 0.94 0.18 0.80 1.11 1.0 0.037 7.68 71.47 0.114 4.71 3.05 2 1.516969 8.0087 0.7668 9.302
17.388 5598.33 5.4 0.167 5.0 60.4 26.17 3.09%Slime Tailings 0.057 113.1 0.99 0.48 0.51 1 1.51 7.567 105.17 9.45 9 3.79% 3.1 71% 1.57 0.00 1.57 0 0.90 0.04 0.97 1.0 0.050 33.38 42.83 0.071 1.41 0.93 0.18 0.80 1.11 1.0 0.037 8.01 75.70 0.120 4.93 3.17 2 1.507275 8.1349 0.7788 9.448
17.552 5598.17 8.1 0.153 7.8 49.8 21.59 1.90%Slime Tailings 0.057 113.1 1.00 0.49 0.51 1 1.50 11.622 161.55 14.04 14 2.16% 2.8 71% 1.58 0.00 1.58 0 0.90 0.05 0.97 1.0 0.050 34.98 49.02 0.077 1.52 0.93 0.22 0.80 1.11 1.0 0.037 4.80 67.46 0.109 4.42 2.97 2 1.49772 12.088 1.1573 14.040
17.716 5598.00 12.1 0.146 11.9 23.4 10.13 1.21%Sand-Slime Tailing 0.059 119.0 1.01 0.49 0.52 1 1.49 17.713 246.21 20.82 21 1.32% 2.5 47% 1.59 0.00 1.59 0 0.89 0.05 0.97 1.0 0.050 37.61 58.43 0.086 1.72 0.93 0.26 0.80 1.11 1.0 0.037 2.91 60.54 0.101 4.06 2.89 2 1.487226 17.93 1.7166 20.824
17.880 5597.84 14.1 0.132 14.0 21.9 9.47 0.94%Sand-Slime Tailing 0.059 119.0 1.02 0.50 0.52 1 1.46 20.417 283.79 23.94 25 1.01% 2.4 47% 1.60 0.00 1.60 0 0.89 0.06 0.97 1.0 0.050 38.70 62.64 0.091 1.82 0.93 0.28 0.80 1.10 1.0 0.037 2.34 56.01 0.096 3.85 2.84 2 1.462524 20.616 1.9738 23.945
18.044 5597.68 14.0 0.074 13.9 17.3 7.51 0.53%Sand-Slime Tailing 0.059 119.0 1.03 0.50 0.53 1 1.45 20.197 280.74 23.64 25 0.57% 2.3 47% 1.61 0.00 1.61 1 0.89 0.05 0.97 1.0 0.050 38.59 62.23 0.090 1.81 0.93 0.28 0.80 1.10 1.0 0.037 1.94 45.86 0.088 3.49 2.65 2 1.454089 20.355 1.9488 23.641
18.208 5597.51 11.8 0.070 11.7 17.2 7.43 0.59%Sand-Slime Tailing 0.059 119.0 1.04 0.51 0.53 1 1.46 16.985 236.10 19.91 20 0.65% 2.4 47% 1.62 0.01 1.62 1 0.89 0.05 0.97 1.0 0.050 37.28 57.19 0.085 1.70 0.93 0.26 0.80 1.10 1.0 0.038 2.31 46.04 0.088 3.46 2.58 2 1.456725 17.141 1.6411 19.909
18.372 5597.35 9.1 0.178 8.9 23.4 10.12 1.96%Slime Tailings 0.057 113.1 1.05 0.51 0.54 1 1.45 12.930 179.72 15.26 15 2.22% 2.8 71% 1.63 0.01 1.62 1 0.89 0.05 0.97 1.0 0.050 35.40 50.66 0.078 1.56 0.93 0.23 0.80 1.10 1.0 0.038 4.60 70.24 0.112 4.35 2.95 2 1.447882 13.141 1.2581 15.262
18.537 5597.18 6.8 0.214 6.6 44.6 19.31 3.12%Slime Tailings 0.057 113.1 1.06 0.52 0.54 1 1.44 9.455 131.43 11.45 11 3.70% 3.0 71% 1.64 0.02 1.62 1 0.89 0.05 0.97 1.0 0.050 34.07 45.52 0.073 1.46 0.93 0.20 0.80 1.10 1.0 0.038 7.03 80.43 0.128 4.92 3.19 2 1.439161 9.8555 0.9436 11.447
18.701 5597.02 12.2 0.207 12.1 17.2 7.44 1.70%Sand-Slime Tailing 0.059 119.0 1.07 0.52 0.55 1 1.43 17.226 239.45 20.19 20 1.87% 2.6 47% 1.65 0.02 1.63 1 0.89 0.05 0.97 1.0 0.050 37.38 57.57 0.085 1.70 0.93 0.26 0.80 1.10 1.0 0.038 3.49 70.44 0.113 4.27 2.98 2 1.429575 17.38 1.6639 20.185
18.865 5596.86 12.4 0.172 12.2 21.3 9.23 1.39%Sand-Slime Tailing 0.059 119.0 1.08 0.53 0.55 1 1.42 17.382 241.62 20.41 21 1.52% 2.6 47% 1.66 0.03 1.63 1 0.89 0.05 0.97 1.0 0.050 37.46 57.87 0.086 1.70 0.93 0.26 0.80 1.09 1.0 0.038 3.17 64.62 0.105 3.94 2.82 2 1.420133 17.571 1.6823 20.408
19.029 5596.69 14.4 0.138 14.3 22.3 9.64 0.96%Sand-Slime Tailing 0.059 119.0 1.09 0.53 0.55 1 1.40 20.001 278.01 23.46 24 1.04% 2.4 47% 1.67 0.03 1.64 1 0.88 0.05 0.96 1.0 0.050 38.53 61.98 0.090 1.79 0.93 0.28 0.80 1.09 1.0 0.038 2.42 56.88 0.097 3.60 2.70 2 1.400632 20.196 1.9335 23.456
19.193 5596.53 15.7 0.130 15.6 20.8 8.99 0.83%Sand-Slime Tailing 0.059 119.0 1.10 0.54 0.56 1 1.39 21.538 299.38 25.22 26 0.89% 2.4 47% 1.68 0.04 1.64 1 0.88 0.06 0.96 1.0 0.050 39.15 64.37 0.093 1.84 0.93 0.29 0.80 1.09 1.0 0.039 2.17 54.73 0.095 3.49 2.67 2 1.385076 21.717 2.0792 25.223
19.357 5596.36 16.7 0.123 16.5 23.1 9.99 0.74%Sand-Slime Tailing 0.059 119.0 1.11 0.54 0.56 1 1.37 22.650 314.83 26.54 28 0.79% 2.3 47% 1.69 0.04 1.65 1 0.88 0.06 0.96 1.0 0.050 39.61 66.14 0.095 1.88 0.93 0.30 0.80 1.09 1.0 0.039 2.00 53.20 0.094 3.41 2.65 2 1.371886 22.847 2.1874 26.536
19.521 5596.20 16.7 0.112 16.5 24.3 10.52 0.67%Sand-Slime Tailing 0.059 119.0 1.12 0.55 0.57 1 1.36 22.519 313.02 26.39 27 0.72% 2.3 47% 1.70 0.05 1.65 1 0.88 0.06 0.96 1.0 0.050 39.56 65.95 0.095 1.88 0.93 0.30 0.80 1.09 1.0 0.039 1.95 51.52 0.093 3.33 2.60 2 1.363988 22.726 2.1758 26.395
19.685 5596.04 16.2 0.142 16.1 26.1 11.31 0.88%Sand-Slime Tailing 0.059 119.0 1.13 0.55 0.57 1 1.36 21.815 303.23 25.59 26 0.94% 2.4 47% 1.71 0.05 1.66 1 0.88 0.06 0.96 1.0 0.051 39.28 64.87 0.093 1.85 0.93 0.29 0.80 1.08 1.0 0.039 2.20 56.30 0.097 3.44 2.64 2 1.358371 22.037 2.1098 25.594
19.849 5595.87 13.7 0.203 13.5 30.3 13.14 1.48%Sand-Slime Tailing 0.059 119.0 1.14 0.56 0.58 1 1.36 18.424 256.09 21.70 22 1.62% 2.6 47% 1.72 0.06 1.66 1 0.88 0.05 0.96 1.0 0.051 37.91 59.61 0.087 1.73 0.93 0.27 0.80 1.08 1.0 0.039 3.13 67.89 0.109 3.85 2.79 2 1.363705 18.682 1.7886 21.698
20.013 5595.71 9.9 0.190 9.6 41.6 18.02 1.92%Slime Tailings 0.057 113.1 1.15 0.56 0.58 1 1.36 13.071 181.68 15.59 15 2.18% 2.8 71% 1.73 0.06 1.67 1 0.88 0.05 0.97 1.0 0.051 35.52 51.11 0.079 1.54 0.93 0.23 0.80 1.08 1.0 0.039 4.55 71.01 0.113 3.96 2.75 2 1.358687 13.423 1.2851 15.590
20.177 5595.54 8.7 0.172 8.3 65.6 28.43 1.98%Slime Tailings 0.057 113.1 1.16 0.57 0.59 1 1.35 11.187 155.51 13.64 13 2.28% 2.8 71% 1.74 0.07 1.67 1 0.87 0.05 0.97 1.0 0.051 34.84 48.47 0.076 1.49 0.92 0.21 0.80 1.08 1.0 0.039 5.13 70.00 0.112 3.88 2.68 2 1.351138 11.741 1.1241 13.636
20.341 5595.38 8.9 0.207 8.5 67.9 29.41 2.32%Slime Tailings 0.057 113.1 1.16 0.57 0.59 1 1.34 11.394 158.38 13.90 13 2.67% 2.9 71% 1.75 0.07 1.67 1 0.87 0.05 0.97 1.0 0.051 34.93 48.82 0.076 1.50 0.92 0.22 0.80 1.08 1.0 0.039 5.43 75.40 0.120 4.12 2.81 2 1.343684 11.964 1.1454 13.895
20.505 5595.22 9.3 0.168 8.9 65.7 28.45 1.81%Slime Tailings 0.057 113.1 1.17 0.58 0.59 1 1.34 11.840 164.57 14.39 14 2.08% 2.8 71% 1.76 0.08 1.68 1 0.87 0.05 0.97 1.0 0.051 35.10 49.49 0.077 1.51 0.92 0.22 0.80 1.08 1.0 0.039 4.75 68.35 0.110 3.74 2.62 2 1.336323 12.388 1.186 14.387
20.669 5595.05 12.9 0.090 12.6 43.1 18.67 0.70%Sand-Slime Tailing 0.059 119.0 1.18 0.58 0.60 1 1.33 16.762 232.99 19.88 20 0.77% 2.4 47% 1.77 0.08 1.68 1 0.87 0.05 0.96 1.0 0.051 37.27 57.16 0.085 1.66 0.92 0.26 0.80 1.08 1.0 0.040 2.50 49.68 0.091 3.09 2.37 2 1.328222 17.119 1.639 19.883
20.833 5594.89 13.2 0.156 13.1 27.5 11.92 1.18%Sand-Slime Tailing 0.059 119.0 1.19 0.59 0.60 1 1.32 17.242 239.67 20.29 20 1.30% 2.5 47% 1.78 0.09 1.69 1 0.87 0.05 0.96 1.0 0.051 37.42 57.71 0.085 1.67 0.92 0.26 0.80 1.07 1.0 0.040 3.02 61.18 0.101 3.39 2.53 2 1.320232 17.469 1.6725 20.289
20.997 5594.72 9.7 0.180 9.2 68.8 29.83 1.86%Slime Tailings 0.057 113.1 1.20 0.60 0.61 1 1.31 12.134 168.66 14.75 14 2.13% 2.8 71% 1.79 0.09 1.69 1 0.87 0.05 0.97 1.0 0.051 35.22 49.97 0.077 1.51 0.92 0.22 0.80 1.07 1.0 0.040 4.73 69.77 0.112 3.70 2.61 2 1.31316 12.698 1.2157 14.748
21.161 5594.56 9.1 0.158 8.5 91.2 39.53 1.73%Slime Tailings 0.057 113.1 1.21 0.60 0.61 1 1.31 11.155 155.05 13.82 13 2.00% 2.8 71% 1.79 0.10 1.70 1 0.87 0.05 0.97 1.0 0.051 34.90 48.72 0.076 1.49 0.92 0.21 0.80 1.07 1.0 0.040 4.84 66.95 0.108 3.55 2.52 2 1.306174 11.899 1.1392 13.820
21.325 5594.39 9.1 0.173 8.5 87.2 37.78 1.90%Slime Tailings 0.057 113.1 1.22 0.61 0.62 1 1.30 11.096 154.23 13.71 13 2.20% 2.8 71% 1.80 0.10 1.70 1 0.87 0.05 0.97 1.0 0.051 34.86 48.57 0.076 1.48 0.91 0.21 0.80 1.07 1.0 0.040 5.08 69.61 0.111 3.64 2.56 2 1.299271 11.803 1.13 13.708
21.489 5594.23 10.0 0.173 9.4 103.1 44.66 1.73%Sand-Slime Tailing 0.059 119.0 1.23 0.61 0.62 1 1.29 12.116 168.41 15.04 14 1.97% 2.8 47% 1.81 0.11 1.70 1 0.86 0.05 0.97 1.0 0.051 35.58 50.61 0.078 1.52 0.91 0.22 0.80 1.07 1.0 0.040 4.53 68.09 0.109 3.54 2.53 2 1.291671 12.947 1.2395 15.037
21.653 5594.07 11.1 0.173 10.5 102.2 44.29 1.56%Sand-Slime Tailing 0.059 119.0 1.24 0.62 0.63 1 1.28 13.420 186.53 16.54 16 1.76% 2.7 47% 1.82 0.11 1.71 1 0.86 0.05 0.97 1.0 0.051 36.10 52.64 0.080 1.56 0.91 0.23 0.80 1.07 1.0 0.040 4.02 66.55 0.107 3.45 2.50 2 1.284172 14.239 1.3632 16.538
Liquef_SeismicSettle_30Aug2015.xls Page 7 of 36
Energy Fuels Resources (USA) Inc.
White Mesa MillLiquefaction Analyses
Data File: 13-52106_SP2W4-C-BSC-CPT 5611.20 Water surface elevation during CPT investigation (ft a5616.24 Ground Surface Elevation at time of CPT (ft amsl)Location: White Mesa 2013 CPT Investigation 0.15 5607.96 Water surface elevation at t0 (ft amsl)5626.19 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl)
..\..\..\6.2.3 Field Data\2013 Field Investigation\Conetec Dat 5.5 5593.50 Water surface elevation at t1 (ft amsl) 0.50 Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after pla 5626.19 5625.94 5625.69 0.50 0.055 110 0.028 0.014 0.00 0.00 0.028 0.014
Tailings Sands 1.69 5588.50 Water surface elevation at t2 (ft amsl)3.50 Thickness of Water Storage/Rooting Zone (ft) 5625.69 5623.94 5622.19 3.50 0.054 107 0.215 0.121 0.00 0.00 0.215 0.121
Tailings Sand-Slimes 4.00 Thickness of High Compaction Layer (ft)5622.19 5620.19 5618.19 4.00 0.060 120 0.454 0.334 0.00 0.00 0.454 0.334
Tailings Slimes 1.44 1.95 Thickness of Random/Platform Fill on on top of existing interim cover (ft) 5618.19 5617.22 5616.24 1.95 0.050 101 0.552 0.503 0.00 0.00 0.552 0.503
Interim Cover 0.47 1104.55 Additional Stress due to Final Cover Placement, ΔσFC (psf)
Cells Requiring User Input/Manipulation 2.21 2.21 7.51 5588.50 Elevation of bottom of tailings (liner) (ft amsl)
rd Cσ Kσ Ka rd Dr f Kσ Ka Avg CN qc1 qc1 qc1N
(ft) (ft amsl) TSF TSF TSF (ft) PSI (%) (tcf) (pcf) (tsf)(tsf)(tsf) 1=Yes TSF MPa % (tsf)(tsf)(tsf) 1=Yes FoS TSF MPa
0=No 0=No
0.164 5616.08 20.1 0.057 20.0 8.1 3.50 0.28%Interim Cover 0.050 100.7 0.01 0.00 0.01 0 1.70 34.068 473.55 39.67 2431 0.28% 0.7 51% 0.56 0.00 0.56 0 1.00 0.06 1.03 1.0 0.059 44.24 83.91 0.118 1.99 0.98 0.36 0.80 2.53 1.0 0.017 1.00 39.67 0.083 201.04 101.51 2 1.7 34.154 3.2699 39.667
0.328 5615.91 44.3 0.080 44.3 3.0 1.28 0.18%Interim Cover 0.050 100.7 0.02 0.00 0.02 0 1.70 75.242 1045.86 87.43 2679 0.18% 0.5 51% 0.57 0.00 0.57 0 1.00 0.10 1.04 1.0 0.060 61.00 148.43 0.264 4.40 0.98 0.54 0.73 2.91 1.0 0.015 1.00 87.43 0.142 172.13 88.26 2 1.7 75.273 7.2067 87.425
0.492 5615.75 56.7 0.160 56.7 4.6 1.97 0.28%Interim Cover 0.050 100.7 0.02 0.00 0.02 0 1.70 96.373 1339.58 111.99 2287 0.28% 0.7 51% 0.58 0.00 0.58 0 1.00 0.12 1.05 1.0 0.061 69.62 181.61 0.563 9.30 0.98 0.61 0.69 2.96 1.0 0.015 1.00 111.99 0.211 170.09 89.70 2 1.7 96.421 9.2314 111.988
0.656 5615.58 59.2 0.227 59.2 1.6 0.69 0.38%Interim Cover 0.050 100.7 0.03 0.00 0.03 0 1.70 100.708 1399.84 116.99 1792 0.38% 0.8 51% 0.59 0.00 0.59 0 1.00 0.12 1.05 1.0 0.061 71.37 188.36 0.707 11.68 0.98 0.62 0.69 2.77 1.0 0.016 1.00 116.99 0.229 138.70 75.19 2 1.7 100.72 9.6434 116.986
0.820 5615.42 57.7 0.368 57.7 1.8 0.79 0.64%Interim Cover 0.050 100.7 0.04 0.00 0.04 0 1.70 98.107 1363.69 113.97 1396 0.64% 1.1 51% 0.59 0.00 0.59 0 1.00 0.12 1.04 1.0 0.060 70.32 184.28 0.614 10.17 0.97 0.62 0.69 2.55 1.0 0.017 1.00 113.97 0.218 105.56 57.86 2 1.7 98.126 9.3946 113.968
0.984 5615.26 76.8 0.959 76.8 3.0 1.30 1.25%Interim Cover 0.050 100.7 0.05 0.00 0.05 0 1.70 130.509 1814.08 151.62 1548 1.25% 1.3 51% 0.60 0.00 0.60 0 1.00 0.16 1.06 1.0 0.061 83.53 235.14 1.000 16.35 0.97 0.71 0.64 2.76 1.0 0.016 1.00 151.62 0.404 163.38 89.86 2 1.7 130.54 12.498 151.615
1.148 5615.09 85.7 0.894 85.6 3.7 1.58 1.04%Interim Cover 0.050 100.7 0.06 0.00 0.06 0 1.70 145.571 2023.44 169.12 1480 1.04% 1.3 51% 0.61 0.00 0.61 0 1.00 0.19 1.07 1.0 0.062 89.67 258.79 1.000 16.23 0.97 0.75 0.62 2.76 1.0 0.016 1.00 169.12 1.000 346.66 181.45 2 1.7 145.61 13.941 169.117
1.312 5614.93 82.5 0.999 82.4 17.4 7.54 1.21%Interim Cover 0.050 100.7 0.07 0.00 0.07 0 1.70 140.046 1946.64 162.87 1247 1.21% 1.4 51% 0.62 0.00 0.62 0 1.00 0.18 1.06 1.0 0.061 87.48 250.35 1.000 16.33 0.97 0.74 0.63 2.57 1.0 0.017 1.00 162.87 1.000 303.45 159.89 2 1.7 140.23 13.426 162.870
1.476 5614.76 93.6 0.450 93.6 0.8 0.34 0.48%Interim Cover 0.050 100.7 0.07 0.00 0.07 0 1.70 159.120 2211.77 184.82 1258 0.48% 1.0 51% 0.63 0.00 0.63 0 1.00 0.22 1.07 1.0 0.062 95.18 280.00 1.000 16.16 0.97 0.78 0.61 2.61 1.0 0.016 1.00 184.82 1.000 269.84 143.00 2 1.7 159.13 15.235 184.818
1.640 5614.60 40.2 0.533 40.2 -0.8 -0.35 1.33%Interim Cover 0.050 100.7 0.08 0.00 0.08 0 1.70 68.306 949.45 79.32 485 1.33% 1.6 51% 0.63 0.00 0.63 0 1.00 0.09 1.03 1.0 0.059 58.16 137.48 0.224 3.78 0.97 0.51 0.74 1.83 1.0 0.023 1.00 79.32 0.126 30.71 17.24 2 1.7 68.297 6.5388 79.323
1.804 5614.44 69.8 0.650 69.8 3.2 1.40 0.93%Interim Cover 0.050 100.7 0.09 0.00 0.09 0 1.70 118.609 1648.67 137.80 767 0.93% 1.3 51% 0.64 0.00 0.64 0 1.00 0.14 1.04 1.0 0.060 78.68 216.47 1.000 16.60 0.97 0.68 0.66 2.14 1.0 0.020 1.00 137.80 0.323 71.44 44.02 2 1.7 118.64 11.359 137.797
1.968 5614.27 139.8 1.194 139.8 6.7 2.90 0.85%Interim Cover 0.050 100.7 0.10 0.00 0.10 0 1.70 237.575 3302.29 276.01 1409 0.85% 1.2 51% 0.65 0.00 0.65 0 1.00 0.30 1.08 1.0 0.063 127.18 403.19 1.000 15.98 0.97 0.96 0.60 2.37 1.0 0.018 1.00 276.01 1.000 202.62 109.30 2 1.7 237.65 22.752 276.012
2.133 5614.11 222.3 2.152 222.2 6.7 2.90 0.97%Interim Cover 0.050 100.7 0.11 0.00 0.11 0 1.70 377.791 5251.29 438.86 2069 0.97% 1.2 51% 0.66 0.00 0.66 0 1.00 0.30 1.08 1.0 0.062 184.33 623.20 1.000 16.05 0.97 1.21 0.60 2.30 1.0 0.019 1.00 438.86 1.000 187.10 101.57 2 1.7 377.86 36.177 438.864
2.297 5613.94 246.8 3.608 246.8 4.8 2.07 1.46%Interim Cover 0.050 100.7 0.12 0.00 0.12 0 1.70 419.082 5825.24 486.80 2133 1.46% 1.4 51% 0.67 0.00 0.67 0 1.00 0.30 1.08 1.0 0.062 201.15 687.95 1.000 16.11 0.97 1.27 0.60 2.23 1.0 0.019 1.00 486.80 1.000 173.81 94.96 2 1.69827 419.13 40.128 486.797
2.461 5613.78 219.5 4.267 219.4 6.7 2.90 1.94%Interim Cover 0.050 100.7 0.12 0.00 0.12 0 1.67 365.913 5086.19 425.07 1770 1.95% 1.5 51% 0.68 0.00 0.68 0 1.00 0.30 1.07 1.0 0.062 179.49 604.56 1.000 16.18 0.97 1.19 0.60 2.17 1.0 0.020 1.00 425.07 1.000 162.28 89.23 2 1.667638 365.98 35.039 425.067
2.625 5613.62 178.9 4.079 179.0 -0.1 -0.03 2.28%Interim Cover 0.050 100.7 0.13 0.00 0.13 0 1.64 293.386 4078.06 340.75 1353 2.28% 1.6 51% 0.68 0.00 0.68 0 1.00 0.30 1.07 1.0 0.062 149.90 490.65 1.000 16.25 0.97 1.07 0.60 2.12 1.0 0.020 1.00 340.75 1.000 152.20 84.23 2 1.639484 293.39 28.089 340.749
2.789 5613.45 149.3 2.666 149.3 0.3 0.12 1.79%Interim Cover 0.050 100.7 0.14 0.00 0.14 0 1.61 240.810 3347.26 279.69 1062 1.79% 1.5 51% 0.69 0.00 0.69 0 0.99 0.30 1.07 1.0 0.061 128.47 408.16 1.000 16.32 0.97 0.97 0.60 2.07 1.0 0.021 1.00 279.69 1.000 143.30 79.81 2 1.61347 240.81 23.055 279.690
2.953 5613.29 132.8 2.041 132.8 -0.3 -0.15 1.54%Interim Cover 0.050 100.7 0.15 0.00 0.15 0 1.61 213.554 2968.40 248.03 892 1.54% 1.5 51% 0.70 0.00 0.70 0 0.99 0.30 1.06 1.0 0.061 117.36 365.39 1.000 16.39 0.97 0.91 0.60 2.02 1.0 0.021 1.00 248.03 1.000 135.40 75.89 2 1.608211 213.55 20.445 248.026
3.117 5613.12 92.1 1.817 92.1 2.6 1.12 1.97%Interim Cover 0.050 100.7 0.16 0.00 0.16 0 1.70 156.604 2176.80 181.92 586 1.98% 1.7 51% 0.71 0.00 0.71 0 0.99 0.22 1.04 1.0 0.060 94.16 276.08 1.000 16.72 0.97 0.78 0.61 1.94 1.0 0.022 1.02 185.13 1.000 128.32 72.52 2 1.7 156.63 14.996 181.918
3.281 5612.96 80.8 1.379 80.8 2.1 0.89 1.71%Sand Tailings 0.051 102.8 0.17 0.00 0.17 0 1.70 137.326 1908.83 159.52 487 1.71% 1.7 18% 0.72 0.00 0.72 0 0.99 0.17 1.03 1.0 0.059 62.87 222.39 1.000 16.90 0.97 0.73 0.64 1.82 1.0 0.023 1.00 160.07 1.000 121.83 69.36 2 1.7 137.35 13.15 159.521
3.445 5612.80 68.7 1.150 68.7 0.4 0.18 1.67%Sand-Slime Tailing 0.047 93.3 0.17 0.00 0.17 0 1.70 116.722 1622.44 135.57 396 1.68% 1.7 47% 0.73 0.00 0.73 0 0.99 0.14 1.02 1.0 0.059 77.85 213.42 1.000 17.04 0.97 0.67 0.66 1.71 1.0 0.025 1.03 139.61 0.333 38.80 27.92 2 1.7 116.73 11.175 135.571
3.609 5612.63 56.4 0.959 56.4 -0.5 -0.20 1.70%Sand-Slime Tailing 0.047 93.3 0.18 0.00 0.18 0 1.70 95.897 1332.97 111.37 311 1.71% 1.8 47% 0.73 0.00 0.73 0 0.99 0.12 1.02 1.0 0.058 69.36 180.73 0.548 9.39 0.97 0.61 0.70 1.61 1.0 0.027 1.07 119.35 0.238 26.57 17.98 2 1.7 95.892 9.1807 111.373
3.773 5612.47 53.4 0.881 53.4 -0.6 -0.27 1.65%Sand-Slime Tailing 0.047 93.3 0.19 0.00 0.19 0 1.70 90.797 1262.08 105.45 283 1.66% 1.8 47% 0.74 0.00 0.74 0 0.99 0.11 1.02 1.0 0.058 67.28 172.73 0.437 7.51 0.97 0.59 0.70 1.57 1.0 0.027 1.08 113.95 0.218 23.31 15.41 2 1.7 90.79 8.6923 105.447
3.937 5612.30 48.2 0.768 48.2 -0.6 -0.27 1.59%Sand-Slime Tailing 0.047 93.3 0.20 0.00 0.20 0 1.70 81.991 1139.67 95.22 245 1.60% 1.8 47% 0.75 0.00 0.75 0 0.99 0.10 1.01 1.0 0.058 63.70 158.92 0.319 5.50 0.97 0.56 0.72 1.52 1.0 0.028 1.10 104.52 0.186 19.17 12.34 2 1.7 81.984 7.8492 95.220
4.101 5612.14 42.9 0.667 42.9 -0.7 -0.29 1.56%Sand-Slime Tailing 0.047 93.3 0.20 0.00 0.20 0 1.70 72.879 1013.02 84.64 209 1.56% 1.8 47% 0.76 0.00 0.76 0 0.99 0.09 1.01 1.0 0.058 59.98 144.62 0.249 4.31 0.97 0.53 0.73 1.47 1.0 0.029 1.12 95.05 0.160 15.85 10.08 2 1.7 72.872 6.9768 84.636
4.265 5611.97 37.5 0.582 37.5 -0.0 -0.01 1.55%Sand-Slime Tailing 0.047 93.3 0.21 0.00 0.21 0 1.70 63.767 886.36 74.06 177 1.56% 1.9 47% 0.76 0.00 0.76 0 0.99 0.09 1.01 1.0 0.058 56.28 130.34 0.204 3.54 0.97 0.50 0.75 1.42 1.0 0.030 1.16 85.99 0.139 13.30 8.42 2 1.7 63.767 6.105 74.061
4.429 5611.81 34.9 0.521 35.0 -0.6 -0.25 1.49%Sand-Slime Tailing 0.047 93.3 0.22 0.00 0.22 0 1.70 59.415 825.87 69.00 159 1.50% 1.9 47% 0.77 0.00 0.77 0 0.99 0.08 1.01 1.0 0.058 54.50 123.50 0.187 3.26 0.97 0.48 0.76 1.39 1.0 0.031 1.18 81.21 0.130 11.98 7.62 2 1.7 59.409 5.6878 69.000
4.593 5611.65 33.0 0.469 33.0 -0.6 -0.26 1.42%Sand-Slime Tailing 0.047 93.3 0.23 0.00 0.23 0 1.70 56.049 779.08 65.09 144 1.43% 1.9 47% 0.78 0.00 0.78 0 0.98 0.08 1.01 1.0 0.057 53.13 118.22 0.176 3.06 0.97 0.47 0.77 1.36 1.0 0.031 1.19 77.39 0.123 10.98 7.02 2 1.7 56.043 5.3655 65.090
4.757 5611.48 30.9 0.492 30.9 -0.7 -0.32 1.59%Sand-Slime Tailing 0.047 93.3 0.23 0.00 0.23 0 1.70 52.462 729.22 60.92 131 1.61% 2.0 47% 0.79 0.00 0.79 0 0.98 0.08 1.01 1.0 0.057 51.67 112.59 0.165 2.87 0.97 0.45 0.77 1.34 1.0 0.032 1.26 76.65 0.122 10.52 6.70 2 1.7 52.454 5.022 60.922
4.921 5611.32 29.7 0.432 29.7 -1.3 -0.55 1.45%Sand-Slime Tailing 0.047 93.3 0.24 0.00 0.24 0 1.70 50.490 701.81 58.63 122 1.47% 2.0 47% 0.79 0.00 0.79 0 0.98 0.08 1.01 1.0 0.057 50.86 109.49 0.159 2.78 0.97 0.44 0.78 1.32 1.0 0.032 1.25 73.30 0.117 9.75 6.27 2 1.7 50.477 4.8326 58.625
5.085 5611.15 26.8 0.410 26.8 -1.5 -0.67 1.53%Sand-Slime Tailing 0.059 119.0 0.25 0.00 0.25 1 1.70 45.594 633.76 52.94 106 1.54% 2.0 47% 0.80 0.00 0.80 0 0.98 0.07 1.00 1.0 0.057 48.87 101.80 0.146 2.55 0.96 0.42 0.79 1.30 1.0 0.033 1.32 70.05 0.112 9.05 5.80 2 1.7 45.578 4.3636 52.936
5.249 5610.99 24.8 0.386 24.8 -0.4 -0.16 1.56%Sand-Slime Tailing 0.059 119.0 0.26 0.01 0.25 1 1.70 42.143 585.79 48.94 96 1.57% 2.1 47% 0.81 0.00 0.81 0 0.98 0.07 1.00 1.0 0.057 47.47 96.41 0.137 2.40 0.96 0.40 0.80 1.28 1.0 0.033 1.38 67.39 0.108 8.62 5.51 2 1.7 42.139 4.0344 48.942
5.413 5610.83 26.0 0.371 26.0 -0.4 -0.17 1.43%Sand-Slime Tailing 0.059 119.0 0.27 0.01 0.26 1 1.70 44.200 614.38 51.33 99 1.44% 2.0 47% 0.82 0.00 0.82 0 0.98 0.07 1.00 1.0 0.057 48.30 99.63 0.142 2.50 0.96 0.41 0.79 1.28 1.0 0.033 1.32 68.00 0.109 8.53 5.51 2 1.7 44.196 4.2313 51.331
5.577 5610.66 24.7 0.321 24.7 -0.3 -0.13 1.30%Sand-Slime Tailing 0.059 119.0 0.28 0.02 0.26 1 1.70 41.922 582.72 48.69 92 1.32% 2.0 47% 0.83 0.00 0.83 0 0.98 0.07 1.00 1.0 0.057 47.38 96.06 0.136 2.40 0.96 0.40 0.80 1.27 1.0 0.033 1.32 64.25 0.105 8.03 5.21 2 1.7 41.919 4.0133 48.686
5.741 5610.50 27.7 0.310 27.7 -0.3 -0.13 1.12%Sand-Slime Tailing 0.059 119.0 0.29 0.02 0.27 1 1.70 47.022 653.61 54.61 102 1.13% 1.9 47% 0.84 0.00 0.84 0 0.98 0.07 1.00 1.0 0.057 49.45 104.06 0.149 2.64 0.96 0.43 0.79 1.28 1.0 0.033 1.23 67.08 0.108 8.15 5.39 2 1.7 47.019 4.5016 54.609
5.905 5610.33 28.1 0.321 28.1 -0.4 -0.16 1.14%Sand-Slime Tailing 0.059 119.0 0.30 0.03 0.27 1 1.70 47.770 664.00 55.48 102 1.15% 1.9 47% 0.85 0.00 0.85 0 0.98 0.07 1.00 1.0 0.057 49.76 105.24 0.151 2.68 0.96 0.43 0.78 1.28 1.0 0.033 1.23 68.51 0.110 8.15 5.41 2 1.7 47.766 4.5731 55.478
6.069 5610.17 23.8 0.368 23.8 -0.4 -0.17 1.54%Sand-Slime Tailing 0.059 119.0 0.31 0.03 0.28 1 1.70 40.511 563.10 47.05 85 1.56% 2.1 47% 0.86 0.00 0.86 0 0.98 0.07 1.00 1.0 0.056 46.80 93.85 0.133 2.35 0.96 0.40 0.80 1.25 1.0 0.034 1.44 67.86 0.109 7.96 5.15 2 1.7 40.507 3.8781 47.046
6.234 5610.01 18.4 0.319 18.4 -0.5 -0.20 1.73%Sand-Slime Tailing 0.059 119.0 0.32 0.04 0.28 1 1.70 31.297 435.03 36.34 64 1.76% 2.2 47% 0.87 0.00 0.87 0 0.98 0.06 1.00 1.0 0.056 43.05 79.39 0.112 1.98 0.96 0.35 0.80 1.25 1.0 0.034 1.71 62.22 0.102 7.35 4.67 2 1.7 31.292 2.9959 36.344
6.398 5609.84 20.4 0.332 20.5 -0.3 -0.14 1.62%Sand-Slime Tailing 0.059 119.0 0.33 0.04 0.29 1 1.70 34.765 483.23 40.37 70 1.65% 2.2 47% 0.88 0.00 0.88 0 0.97 0.07 1.00 1.0 0.056 44.46 84.83 0.119 2.12 0.96 0.37 0.80 1.25 1.0 0.034 1.60 64.41 0.105 7.41 4.77 2 1.7 34.762 3.3281 40.374
6.562 5609.68 17.3 0.407 17.3 -0.4 -0.16 2.35%Sand-Slime Tailing 0.059 119.0 0.34 0.05 0.29 1 1.70 29.461 409.51 34.21 58 2.40% 2.3 47% 0.89 0.00 0.89 0 0.97 0.06 1.00 1.0 0.056 42.30 76.51 0.108 1.92 0.96 0.34 0.80 1.24 1.0 0.034 2.08 71.05 0.113 7.88 4.90 2 1.7 29.457 2.8202 34.213
6.726 5609.51 11.3 0.330 11.4 -0.5 -0.20 2.91%Slime Tailings 0.057 113.1 0.35 0.05 0.30 1 1.70 19.295 268.20 22.40 37 3.00% 2.5 71% 0.90 0.00 0.90 0 0.97 0.05 1.00 1.0 0.056 37.89 60.29 0.088 1.57 0.96 0.27 0.80 1.24 1.0 0.034 3.02 67.71 0.109 7.47 4.52 2 1.7 19.29 1.8468 22.404
6.890 5609.35 13.4 0.217 13.4 1.7 0.72 1.62%Sand-Slime Tailing 0.059 119.0 0.36 0.06 0.30 1 1.70 22.763 316.41 26.46 43 1.66% 2.3 47% 0.91 0.00 0.91 0 0.97 0.06 1.00 1.0 0.056 39.58 66.04 0.095 1.69 0.96 0.30 0.80 1.23 1.0 0.034 2.05 54.36 0.095 6.42 4.05 2 1.7 22.781 2.181 26.458
7.054 5609.19 20.5 0.195 20.5 1.9 0.83 0.95%Sand-Slime Tailing 0.059 119.0 0.37 0.06 0.31 1 1.70 34.782 483.47 40.42 66 0.97% 2.0 47% 0.92 0.00 0.92 0 0.97 0.07 1.00 1.0 0.056 44.48 84.90 0.119 2.14 0.96 0.37 0.80 1.23 1.0 0.034 1.36 55.14 0.096 6.36 4.25 2 1.7 34.802 3.332 40.421
7.218 5609.02 20.5 0.217 20.5 0.3 0.14 1.06%Sand-Slime Tailing 0.059 119.0 0.38 0.07 0.31 1 1.70 34.782 483.47 40.40 65 1.08% 2.1 47% 0.93 0.00 0.93 0 0.97 0.07 0.99 1.0 0.056 44.47 84.87 0.119 2.14 0.96 0.37 0.80 1.23 1.0 0.035 1.42 57.29 0.097 6.40 4.27 2 1.7 34.786 3.3304 40.401
7.382 5608.86 18.7 0.284 18.7 -0.3 -0.14 1.52%Sand-Slime Tailing 0.059 119.0 0.39 0.07 0.31 1 1.70 31.756 441.41 36.88 58 1.55% 2.2 47% 0.94 0.00 0.94 0 0.97 0.06 0.99 1.0 0.056 43.24 80.11 0.113 2.03 0.96 0.35 0.80 1.22 1.0 0.035 1.70 62.74 0.103 6.66 4.34 2 1.7 31.752 3.04 36.879
7.546 5608.69 13.6 0.275 13.6 -0.3 -0.14 2.03%Sand-Slime Tailing 0.059 119.0 0.40 0.08 0.32 1 1.70 23.086 320.90 26.81 41 2.09% 2.4 47% 0.95 0.00 0.95 0 0.97 0.06 0.99 1.0 0.056 39.70 66.51 0.095 1.72 0.96 0.30 0.80 1.22 1.0 0.035 2.35 63.11 0.103 6.59 4.15 2 1.7 23.082 2.2099 26.809
7.710 5608.53 17.2 0.252 17.2 0.6 0.24 1.46%Sand-Slime Tailing 0.059 119.0 0.41 0.08 0.32 1 1.70 29.257 406.67 33.99 52 1.50% 2.2 47% 0.96 0.00 0.96 0 0.97 0.06 0.99 1.0 0.055 42.22 76.21 0.108 1.94 0.96 0.34 0.80 1.22 1.0 0.035 1.78 60.41 0.101 6.32 4.13 2 1.7 29.263 2.8016 33.987
7.874 5608.37 19.5 0.259 19.5 0.3 0.14 1.33%Sand-Slime Tailing 0.059 119.0 0.42 0.09 0.33 1 1.70 33.184 461.26 38.55 58 1.36% 2.2 47% 0.97 0.00 0.97 0 0.96 0.06 0.99 1.0 0.055 43.82 82.37 0.116 2.09 0.96 0.36 0.80 1.21 1.0 0.035 1.61 62.11 0.102 6.34 4.22 2 1.7 33.187 3.1774 38.545
8.038 5608.20 17.5 0.270 17.5 -0.4 -0.19 1.54%Sand-Slime Tailing 0.059 119.0 0.43 0.09 0.33 1 1.70 29.716 413.05 34.51 51 1.58% 2.3 47% 0.98 0.00 0.98 0 0.96 0.06 0.99 1.0 0.055 42.40 76.91 0.108 1.96 0.96 0.34 0.80 1.21 1.0 0.035 1.83 63.24 0.104 6.33 4.15 2 1.7 29.711 2.8446 34.508
8.202 5608.04 20.8 0.275 20.8 -0.3 -0.15 1.32%Sand-Slime Tailing 0.059 119.0 0.44 0.10 0.34 1 1.70 35.343 491.27 41.04 60 1.35% 2.2 47% 0.99 0.00 0.99 0 0.96 0.07 0.99 1.0 0.055 44.70 85.74 0.121 2.19 0.96 0.37 0.80 1.21 1.0 0.035 1.58 64.94 0.105 6.36 4.28 2 1.7 35.339 3.3834 41.045
8.366 5607.87 29.7 0.344 29.7 -0.3 -0.13 1.16%Sand-Slime Tailing 0.059 119.0 0.45 0.10 0.34 1 1.70 50.524 702.28 58.68 85 1.18% 2.0 47% 1.00 0.00 1.00 0 0.96 0.08 0.99 1.0 0.055 50.88 109.56 0.159 2.89 0.96 0.44 0.78 1.23 1.0 0.034 1.31 76.88 0.122 7.28 5.09 2 1.7 50.521 4.8369 58.677
8.530 5607.71 27.7 0.473 27.7 -0.4 -0.17 1.71%Sand-Slime Tailing 0.059 119.0 0.46 0.11 0.35 1 1.70 47.056 654.08 54.65 78 1.74% 2.1 47% 1.01 0.00 1.01 0 0.96 0.07 0.99 1.0 0.055 49.47 104.12 0.149 2.72 0.96 0.43 0.79 1.21 1.0 0.035 1.55 84.64 0.136 8.02 5.37 2 1.7 47.052 4.5047 54.648
8.694 5607.55 17.5 0.350 17.5 -0.4 -0.18 2.00%Sand-Slime Tailing 0.059 119.0 0.47 0.11 0.35 1 1.70 29.733 413.29 34.53 48 2.06% 2.4 47% 1.02 0.00 1.02 0 0.96 0.06 0.99 1.0 0.055 42.41 76.94 0.109 1.98 0.96 0.34 0.80 1.20 1.0 0.035 2.13 73.60 0.117 6.79 4.38 2 1.7 29.729 2.8462 34.528
8.858 5607.38 14.1 0.266 14.1 0.3 0.13 1.88%Sand-Slime Tailing 0.059 119.0 0.48 0.12 0.36 1 1.70 23.987 333.42 27.86 38 1.95% 2.4 47% 1.03 0.00 1.03 0 0.96 0.06 0.99 1.0 0.055 40.07 67.94 0.097 1.77 0.96 0.30 0.80 1.19 1.0 0.035 2.38 66.42 0.107 6.14 3.96 2 1.7 23.99 2.2968 27.863
9.022 5607.22 12.6 0.246 12.4 27.0 11.71 1.96%Sand-Slime Tailing 0.059 119.0 0.49 0.12 0.36 1 1.70 21.080 293.01 24.82 33 2.04% 2.5 47% 1.04 0.00 1.04 0 0.96 0.06 0.99 1.0 0.055 39.01 63.82 0.092 1.68 0.96 0.29 0.80 1.19 1.0 0.035 2.64 65.56 0.106 6.01 3.85 2 1.7 21.367 2.0457 24.816
9.186 5607.05 14.1 0.209 14.0 21.8 9.43 1.48%Sand-Slime Tailing 0.059 119.0 0.50 0.13 0.37 1 1.70 23.783 330.58 27.89 37 1.53% 2.4 47% 1.05 0.00 1.05 0 0.96 0.06 0.99 1.0 0.055 40.08 67.97 0.097 1.78 0.96 0.30 0.80 1.19 1.0 0.035 2.17 60.39 0.100 5.62 3.70 2 1.7 24.014 2.2991 27.891
9.350 5606.89 11.2 0.245 11.2 5.5 2.40 2.18%Slime Tailings 0.057 113.1 0.50 0.13 0.37 1 1.70 19.023 264.42 22.16 29 2.29% 2.6 71% 1.06 0.00 1.06 0 0.96 0.05 0.99 1.0 0.055 37.81 59.97 0.088 1.61 0.95 0.27 0.80 1.18 1.0 0.036 3.06 67.79 0.109 6.02 3.82 2 1.7 19.082 1.8269 22.162
9.514 5606.73 8.4 0.166 8.3 7.5 3.23 1.98%Slime Tailings 0.057 113.1 0.51 0.14 0.37 1 1.70 14.144 196.60 16.52 21 2.11% 2.6 71% 1.07 0.00 1.07 0 0.95 0.05 0.99 1.0 0.055 35.84 52.36 0.080 1.46 0.95 0.23 0.80 1.18 1.0 0.036 3.62 59.80 0.100 5.46 3.46 2 1.7 14.223 1.3617 16.519
9.678 5606.56 9.2 0.101 9.1 11.5 4.97 1.10%Sand-Slime Tailing 0.059 119.0 0.52 0.14 0.38 1 1.70 15.470 215.03 18.11 23 1.17% 2.5 47% 1.08 0.00 1.08 0 0.95 0.05 0.99 1.0 0.054 36.65 54.76 0.082 1.51 0.95 0.25 0.80 1.18 1.0 0.036 2.64 47.72 0.090 4.85 3.18 2 1.7 15.592 1.4928 18.109
9.842 5606.40 8.9 0.136 8.8 15.6 6.76 1.53%Sand-Slime Tailing 0.059 119.0 0.53 0.15 0.38 1 1.70 14.926 207.47 17.53 22 1.63% 2.6 47% 1.09 0.00 1.09 0 0.95 0.05 0.99 1.0 0.054 36.45 53.98 0.081 1.50 0.95 0.24 0.80 1.18 1.0 0.036 3.14 55.03 0.095 5.10 3.30 2 1.7 15.092 1.4449 17.528
10.006 5606.23 7.4 0.138 7.3 21.3 9.25 1.87%Slime Tailings 0.057 113.1 0.54 0.15 0.39 1 1.70 12.325 171.32 14.58 18 2.02% 2.7 71% 1.09 0.00 1.09 0 0.95 0.05 0.99 1.0 0.054 35.16 49.74 0.077 1.42 0.95 0.22 0.80 1.17 1.0 0.036 3.97 57.82 0.098 5.18 3.30 2 1.7 12.551 1.2017 14.578
10.170 5606.07 10.2 0.164 10.2 -1.3 -0.56 1.60%Sand-Slime Tailing 0.059 119.0 0.55 0.16 0.39 1 1.70 17.408 241.97 20.20 25 1.69% 2.5 47% 1.10 0.00 1.10 0 0.95 0.05 0.99 1.0 0.054 37.39 57.59 0.085 1.57 0.95 0.26 0.80 1.17 1.0 0.036 2.94 59.41 0.100 5.20 3.39 2 1.7 17.394 1.6653 20.202
10.335 5605.91 11.2 0.177 11.1 9.8 4.26 1.58%Sand-Slime Tailing 0.059 119.0 0.56 0.17 0.40 1 1.70 18.921 263.00 22.10 27 1.67% 2.5 47% 1.11 0.00 1.11 0 0.95 0.05 0.99 1.0 0.054 38.05 60.15 0.088 1.63 0.95 0.27 0.80 1.17 1.0 0.036 2.77 61.13 0.101 5.23 3.43 2 1.7 19.025 1.8215 22.097
10.499 5605.74 10.6 0.158 10.5 14.1 6.11 1.49%Sand-Slime Tailing 0.059 119.0 0.57 0.17 0.40 1 1.70 17.833 247.88 20.89 25 1.58% 2.5 47% 1.12 0.00 1.12 0 0.95 0.05 0.99 1.0 0.054 37.63 58.51 0.086 1.60 0.95 0.26 0.80 1.16 1.0 0.036 2.83 59.12 0.099 5.07 3.33 2 1.7 17.983 1.7216 20.886
10.663 5605.58 11.5 0.125 11.4 10.9 4.70 1.09%Sand-Slime Tailing 0.059 119.0 0.58 0.18 0.41 1 1.70 19.380 269.38 22.64 27 1.15% 2.4 47% 1.13 0.00 1.13 0 0.95 0.05 0.99 1.0 0.054 38.24 60.89 0.089 1.65 0.95 0.27 0.80 1.16 1.0 0.036 2.35 53.28 0.094 4.75 3.20 2 1.7 19.495 1.8665 22.642
10.827 5605.41 11.2 0.137 11.1 7.2 3.12 1.22%Sand-Slime Tailing 0.059 119.0 0.59 0.18 0.41 1 1.70 18.938 263.24 22.08 26 1.29% 2.5 47% 1.14 0.00 1.14 0 0.95 0.05 0.98 1.0 0.054 38.05 60.13 0.088 1.64 0.95 0.27 0.80 1.16 1.0 0.036 2.54 56.01 0.096 4.81 3.22 2 1.7 19.014 1.8204 22.084
10.991 5605.25 11.3 0.125 11.2 15.6 6.77 1.11%Sand-Slime Tailing 0.059 119.0 0.60 0.19 0.42 1 1.70 19.057 264.89 22.33 26 1.17% 2.4 47% 1.15 0.00 1.15 0 0.94 0.05 0.98 1.0 0.054 38.13 60.46 0.088 1.64 0.95 0.27 0.80 1.16 1.0 0.036 2.43 54.27 0.095 4.69 3.17 2 1.7 19.223 1.8404 22.326
11.155 5605.09 12.7 0.188 12.6 14.5 6.28 1.48%Sand-Slime Tailing 0.059 119.0 0.61 0.19 0.42 1 1.70 21.437 297.97 25.08 29 1.56% 2.5 47% 1.16 0.00 1.16 0 0.94 0.06 0.98 1.0 0.054 39.10 64.17 0.093 1.73 0.95 0.29 0.80 1.15 1.0 0.036 2.56 64.20 0.105 5.12 3.42 2 1.7 21.591 2.0671 25.077
11.319 5604.92 10.6 0.193 10.5 12.0 5.18 1.82%Sand-Slime Tailing 0.059 119.0 0.62 0.20 0.42 1 1.70 17.867 248.35 20.90 23 1.94% 2.6 47% 1.17 0.00 1.17 0 0.94 0.05 0.98 1.0 0.054 37.63 58.53 0.086 1.61 0.95 0.26 0.80 1.15 1.0 0.036 3.23 67.57 0.109 5.26 3.43 2 1.7 17.994 1.7227 20.899
11.483 5604.76 10.1 0.128 10.0 15.4 6.66 1.27%Sand-Slime Tailing 0.059 119.0 0.63 0.20 0.43 1 1.70 17.000 236.30 19.93 22 1.35% 2.5 47% 1.18 0.00 1.18 0 0.94 0.05 0.98 1.0 0.053 37.29 57.23 0.085 1.59 0.95 0.26 0.80 1.15 1.0 0.036 2.87 57.19 0.097 4.66 3.12 2 1.7 17.163 1.6432 19.934
11.647 5604.59 9.6 0.155 9.5 10.4 4.52 1.62%Sand-Slime Tailing 0.059 119.0 0.64 0.21 0.43 1 1.70 16.150 224.49 18.89 21 1.74% 2.6 47% 1.19 0.00 1.19 0 0.94 0.05 0.98 1.0 0.053 36.93 55.81 0.083 1.56 0.95 0.25 0.80 1.15 1.0 0.037 3.35 63.33 0.104 4.91 3.24 2 1.7 16.261 1.5568 18.886
11.811 5604.43 7.6 0.132 7.4 26.7 11.58 1.74%Slime Tailings 0.057 113.1 0.65 0.21 0.44 1 1.70 12.549 174.44 14.90 16 1.91% 2.7 71% 1.20 0.00 1.20 0 0.94 0.05 0.98 1.0 0.053 35.28 50.18 0.078 1.46 0.95 0.22 0.80 1.14 1.0 0.037 4.16 62.05 0.102 4.80 3.13 2 1.695868 12.832 1.2286 14.904
11.975 5604.27 7.8 0.081 7.7 21.2 9.18 1.04%Sand-Slime Tailing 0.059 119.0 0.66 0.22 0.44 1 1.68 12.884 179.08 15.22 16 1.14% 2.6 47% 1.21 0.00 1.21 0 0.94 0.05 0.98 1.0 0.053 35.64 50.86 0.078 1.47 0.95 0.23 0.80 1.14 1.0 0.037 3.31 50.40 0.092 4.27 2.87 2 1.681958 13.106 1.2548 15.222
Scaling Factor for stress ration, rm
Volumetric Strain Ratio for Site-Specific Design Earthq
Equiv. Number of Uniform Strain Cycles, N
Youd et al. (2001)
CSR
M=7.5,
s'v=1atm
0.15
Earthquake Moment Magnitude, M: 5.5
Magnitude Scaling Factor, MSF:
Equil Pore
Pressure at time of
Conditions at t1 Liquefaction Triggering Analyses Idriss & Boulanger (2008)Equil
Pore
Pressure
at t1CN qc1 qc1 qc1N
Normalized Cone
Penetration Resistance, Qt
Normalized Friction
Ratio, Fr (%)
Total Stress
at t1 Liquefiable?
1=Yes
2=No
Cyclic Stress RatioEffective
Stress at
t1
Saturated
at t1
Idriss & Boulanger (2008)
Idriss and Boulanger (2008)
Max. Horiz. Acceleration, Amax/g:
Earthquake Moment Magnitude, M:
Magnitude Scaling Factor, MSF:
WHITE MESA TAILINGS REPOSITORY LIQUEFACTION AND SEISMIC SETTLEMENT ANALYSES - 2W4-C Elev. at Top of Layer (ft)
Elev. At
Midpoint of Layer (ft)
Bottom
of Layer (ft)
Thickness of Layer (ft)
CSR
M=7.5,
s'v=1atm
Kc
High Compaction Layer
Platform/Random Fill Layer
Pw (u2)Pw (u2)
2013 CPT Data from ConeTec CPT Data Interpretations
fs/qt
Material Type (as determined
by fines
Unit Weight Unit Weight
Total Stress
at time of CPT
Depth
at time of CPT Elevation qt fs qc
Effective Stress at
time of CPT
Saturated
at time of CPT
Type Index, Ic FC
Youd, et al (2001)
Max. Horiz. Acceleration, Amax/g:
Stress at
Bottom of Layer (tsf)
Stress at
Midpoint of Layer (tsf)FINAL COVER
Erosion Protection Layer
Water Storage/Rooting Zone Layer
qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Equil Pore
Pressure at Midpoint of Layer (tsf)
Unit Weight (tcf)
Unit Weight (pcf)
Stress at
Bottom of Layer (tsf)
Stress at
Midpoint of Layer (tsf)
Pressure
at Bottom of Layer (tsf)
Cyclic Resistance Ratio
FoS
Cyclic Stress Ratio
FoS
∆qc1n qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Liquef_SeismicSettle_30Aug2015.xls Page 8 of 36
Energy Fuels Resources (USA) Inc.
White Mesa MillLiquefaction Analyses
Data File: 13-52106_SP2W4-C-BSC-CPT 5611.20 Water surface elevation during CPT investigation (ft a5616.24 Ground Surface Elevation at time of CPT (ft amsl)Location: White Mesa 2013 CPT Investigation 0.15 5607.96 Water surface elevation at t0 (ft amsl)5626.19 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl)
..\..\..\6.2.3 Field Data\2013 Field Investigation\Conetec Dat 5.5 5593.50 Water surface elevation at t1 (ft amsl) 0.50 Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after pla 5626.19 5625.94 5625.69 0.50 0.055 110 0.028 0.014 0.00 0.00 0.028 0.014
Tailings Sands 1.69 5588.50 Water surface elevation at t2 (ft amsl)3.50 Thickness of Water Storage/Rooting Zone (ft) 5625.69 5623.94 5622.19 3.50 0.054 107 0.215 0.121 0.00 0.00 0.215 0.121
Tailings Sand-Slimes 4.00 Thickness of High Compaction Layer (ft)5622.19 5620.19 5618.19 4.00 0.060 120 0.454 0.334 0.00 0.00 0.454 0.334
Tailings Slimes 1.44 1.95 Thickness of Random/Platform Fill on on top of existing interim cover (ft) 5618.19 5617.22 5616.24 1.95 0.050 101 0.552 0.503 0.00 0.00 0.552 0.503
Interim Cover 0.47 1104.55 Additional Stress due to Final Cover Placement, ΔσFC (psf)
Cells Requiring User Input/Manipulation 2.21 2.21 7.51 5588.50 Elevation of bottom of tailings (liner) (ft amsl)
rd Cσ Kσ Ka rd Dr f Kσ Ka Avg CN qc1 qc1 qc1N
(ft) (ft amsl) TSF TSF TSF (ft) PSI (%) (tcf) (pcf) (tsf)(tsf)(tsf) 1=Yes TSF MPa % (tsf)(tsf)(tsf) 1=Yes FoS TSF MPa
0=No 0=No
Scaling Factor for stress ration, rm
Volumetric Strain Ratio for Site-Specific Design Earthq
Equiv. Number of Uniform Strain Cycles, N
Youd et al. (2001)
CSR
M=7.5,
s'v=1atm
0.15
Earthquake Moment Magnitude, M: 5.5
Magnitude Scaling Factor, MSF:
Equil Pore
Pressure at time of
Conditions at t1 Liquefaction Triggering Analyses Idriss & Boulanger (2008)Equil
Pore
Pressure
at t1CN qc1 qc1 qc1N
Normalized Cone
Penetration Resistance, Qt
Normalized Friction
Ratio, Fr (%)
Total Stress
at t1 Liquefiable?
1=Yes
2=No
Cyclic Stress RatioEffective
Stress at
t1
Saturated
at t1
Idriss & Boulanger (2008)
Idriss and Boulanger (2008)
Max. Horiz. Acceleration, Amax/g:
Earthquake Moment Magnitude, M:
Magnitude Scaling Factor, MSF:
WHITE MESA TAILINGS REPOSITORY LIQUEFACTION AND SEISMIC SETTLEMENT ANALYSES - 2W4-C Elev. at Top of Layer (ft)
Elev. At
Midpoint of Layer (ft)
Bottom
of Layer (ft)
Thickness of Layer (ft)
CSR
M=7.5,
s'v=1atm
Kc
High Compaction Layer
Platform/Random Fill Layer
Pw (u2)Pw (u2)
2013 CPT Data from ConeTec CPT Data Interpretations
fs/qt
Material Type (as determined
by fines
Unit Weight Unit Weight
Total Stress
at time of CPT
Depth
at time of CPT Elevation qt fs qc
Effective Stress at
time of CPT
Saturated
at time of CPT
Type Index, Ic FC
Youd, et al (2001)
Max. Horiz. Acceleration, Amax/g:
Stress at
Bottom of Layer (tsf)
Stress at
Midpoint of Layer (tsf)FINAL COVER
Erosion Protection Layer
Water Storage/Rooting Zone Layer
qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Equil Pore
Pressure at Midpoint of Layer (tsf)
Unit Weight (tcf)
Unit Weight (pcf)
Stress at
Bottom of Layer (tsf)
Stress at
Midpoint of Layer (tsf)
Pressure
at Bottom of Layer (tsf)
Cyclic Resistance Ratio
FoS
Cyclic Stress Ratio
FoS
∆qc1n qc1n-cs
(CRR)
M=7.5,
s'v=1atm
12.139 5604.10 8.6 0.080 8.5 21.2 9.20 0.93%Sand-Slime Tailing 0.059 119.0 0.67 0.22 0.45 1 1.67 14.147 196.65 16.69 18 1.01% 2.5 47% 1.22 0.00 1.22 0 0.94 0.05 0.98 1.0 0.053 36.15 52.84 0.080 1.51 0.95 0.24 0.80 1.14 1.0 0.037 2.95 49.28 0.091 4.19 2.85 2 1.668305 14.368 1.3756 16.688
12.303 5603.94 7.4 0.144 7.2 28.9 12.53 1.95%Slime Tailings 0.057 113.1 0.68 0.23 0.45 1 1.66 11.958 166.22 14.24 15 2.14% 2.8 71% 1.23 0.00 1.23 0 0.94 0.05 0.98 1.0 0.053 35.05 49.28 0.077 1.45 0.95 0.22 0.80 1.14 1.0 0.037 4.55 64.75 0.105 4.80 3.12 2 1.656275 12.257 1.1735 14.236
12.467 5603.77 6.6 0.098 6.4 31.0 13.42 1.49%Slime Tailings 0.057 113.1 0.69 0.23 0.46 1 1.64 10.508 146.06 12.57 13 1.66% 2.8 71% 1.24 0.00 1.24 0 0.93 0.05 0.98 1.0 0.053 34.47 47.04 0.075 1.41 0.95 0.20 0.80 1.14 1.0 0.037 4.48 56.35 0.097 4.37 2.89 2 1.644442 10.826 1.0365 12.574
12.631 5603.61 10.5 0.114 10.4 20.4 8.82 1.08%Sand-Slime Tailing 0.059 119.0 0.70 0.24 0.46 1 1.63 16.984 236.07 19.97 21 1.16% 2.5 47% 1.25 0.00 1.25 0 0.93 0.05 0.98 1.0 0.053 37.30 57.27 0.085 1.61 0.95 0.26 0.80 1.13 1.0 0.037 2.75 54.84 0.095 4.27 2.94 2 1.631469 17.191 1.6459 19.966
12.795 5603.44 13.7 0.097 13.6 15.2 6.59 0.71%Sand-Slime Tailing 0.059 119.0 0.71 0.24 0.46 1 1.59 21.666 301.16 25.34 28 0.75% 2.3 47% 1.26 0.00 1.26 0 0.93 0.06 0.98 1.0 0.053 39.19 64.53 0.093 1.76 0.95 0.29 0.80 1.13 1.0 0.037 1.95 49.33 0.091 4.04 2.90 2 1.59077 21.817 2.0888 25.339
12.959 5603.28 16.5 0.105 16.4 9.8 4.23 0.64%Sand-Slime Tailing 0.059 119.0 0.72 0.25 0.47 1 1.55 25.544 355.07 29.78 34 0.67% 2.2 47% 1.27 0.00 1.27 0 0.93 0.06 0.98 1.0 0.053 40.75 70.52 0.100 1.91 0.95 0.32 0.80 1.13 1.0 0.037 1.68 50.08 0.092 4.03 2.97 2 1.554744 25.639 2.4547 29.778
13.123 5603.12 21.7 0.122 21.7 9.2 4.00 0.56%Sand-Slime Tailing 0.059 119.0 0.73 0.25 0.47 1 1.51 32.623 453.45 37.99 44 0.58% 2.1 47% 1.28 0.00 1.28 0 0.93 0.06 0.97 1.0 0.052 43.63 81.62 0.115 2.19 0.95 0.36 0.80 1.13 1.0 0.037 1.41 53.48 0.094 4.10 3.15 2 1.506814 32.709 3.1316 37.990
13.287 5602.95 18.8 0.157 18.7 5.8 2.52 0.84%Sand-Slime Tailing 0.059 119.0 0.74 0.26 0.48 1 1.52 28.407 394.86 33.06 38 0.87% 2.2 47% 1.29 0.00 1.29 0 0.93 0.06 0.98 1.0 0.052 41.90 74.95 0.106 2.02 0.95 0.33 0.80 1.12 1.0 0.037 1.72 56.89 0.097 4.19 3.11 2 1.517492 28.462 2.725 33.057
13.451 5602.79 19.3 0.227 19.2 9.2 4.00 1.18%Sand-Slime Tailing 0.059 119.0 0.75 0.26 0.48 1 1.50 28.942 402.30 33.72 38 1.22% 2.3 47% 1.30 0.00 1.30 0 0.93 0.06 0.97 1.0 0.052 42.13 75.84 0.107 2.05 0.95 0.34 0.80 1.12 1.0 0.037 1.93 65.17 0.106 4.52 3.28 2 1.504284 29.029 2.7792 33.715
13.615 5602.62 15.8 0.262 15.7 7.7 3.33 1.66%Sand-Slime Tailing 0.059 119.0 0.76 0.27 0.49 1 1.52 23.933 332.67 27.88 31 1.74% 2.5 47% 1.31 0.00 1.31 0 0.93 0.06 0.98 1.0 0.052 40.08 67.96 0.097 1.86 0.95 0.30 0.80 1.12 1.0 0.037 2.58 72.05 0.115 4.86 3.36 2 1.520523 24.006 2.2983 27.881
13.779 5602.46 12.7 0.218 12.6 16.1 6.99 1.72%Sand-Slime Tailing 0.059 119.0 0.77 0.27 0.49 1 1.54 19.381 269.39 22.69 24 1.83% 2.6 47% 1.32 0.00 1.32 0 0.92 0.05 0.98 1.0 0.052 38.26 60.95 0.089 1.70 0.94 0.28 0.80 1.12 1.0 0.037 3.08 69.87 0.112 4.69 3.19 2 1.536918 19.535 1.8703 22.689
13.943 5602.30 10.1 0.175 9.9 22.6 9.81 1.74%Sand-Slime Tailing 0.059 119.0 0.78 0.28 0.50 1 1.54 15.263 212.15 17.98 19 1.88% 2.7 47% 1.33 0.00 1.33 0 0.92 0.05 0.98 1.0 0.052 36.61 54.59 0.082 1.57 0.94 0.24 0.80 1.12 1.0 0.037 3.70 66.52 0.107 4.46 3.02 2 1.5355 15.48 1.482 17.979
14.107 5602.13 9.1 0.134 8.8 44.4 19.24 1.48%Sand-Slime Tailing 0.059 119.0 0.79 0.28 0.50 1 1.52 13.415 186.46 16.07 17 1.62% 2.7 47% 1.34 0.00 1.34 0 0.92 0.05 0.98 1.0 0.052 35.94 52.01 0.079 1.52 0.94 0.23 0.80 1.11 1.0 0.037 3.76 60.46 0.101 4.14 2.83 2 1.524396 13.837 1.3248 16.071
14.271 5601.97 13.3 0.135 13.2 23.4 10.14 1.01%Sand-Slime Tailing 0.059 119.0 0.79 0.29 0.51 1 1.50 19.817 275.45 23.27 25 1.08% 2.4 47% 1.35 0.00 1.35 0 0.92 0.05 0.98 1.0 0.052 38.46 61.73 0.090 1.73 0.94 0.28 0.80 1.11 1.0 0.037 2.41 56.17 0.096 3.94 2.84 2 1.501262 20.036 1.9182 23.270
14.436 5601.80 11.8 0.101 11.7 21.6 9.38 0.86%Sand-Slime Tailing 0.059 119.0 0.80 0.29 0.51 1 1.50 17.537 243.76 20.60 22 0.92% 2.4 47% 1.36 0.00 1.36 0 0.92 0.05 0.98 1.0 0.052 37.53 58.13 0.086 1.65 0.94 0.26 0.80 1.11 1.0 0.037 2.50 51.42 0.093 3.75 2.70 2 1.502727 17.74 1.6984 20.604
14.600 5601.64 11.3 0.117 11.2 20.4 8.83 1.03%Sand-Slime Tailing 0.059 119.0 0.81 0.30 0.52 1 1.49 16.742 232.71 19.67 20 1.11% 2.5 47% 1.37 0.00 1.37 0 0.92 0.05 0.98 1.0 0.052 37.20 56.86 0.084 1.63 0.94 0.26 0.80 1.11 1.0 0.038 2.79 54.80 0.095 3.83 2.73 2 1.492153 16.932 1.621 19.665
14.764 5601.48 10.3 0.048 10.1 26.4 11.43 0.47%Sand-Slime Tailing 0.059 119.0 0.82 0.30 0.52 1 1.48 15.025 208.85 17.73 18 0.51% 2.4 47% 1.38 0.00 1.38 0 0.92 0.05 0.98 1.0 0.052 36.52 54.25 0.082 1.58 0.94 0.24 0.80 1.11 1.0 0.038 2.29 40.67 0.084 3.34 2.46 2 1.481748 15.269 1.4618 17.734
14.928 5601.31 10.3 0.125 10.2 18.1 7.85 1.21%Sand-Slime Tailing 0.059 119.0 0.83 0.31 0.53 1 1.47 15.024 208.83 17.64 18 1.32% 2.6 47% 1.39 0.00 1.39 0 0.92 0.05 0.98 1.0 0.052 36.49 54.13 0.082 1.58 0.94 0.24 0.80 1.10 1.0 0.038 3.25 57.31 0.098 3.85 2.71 2 1.471506 15.19 1.4543 17.643
15.092 5601.15 9.7 0.124 9.5 36.6 15.86 1.28%Sand-Slime Tailing 0.059 119.0 0.84 0.31 0.53 1 1.46 13.810 191.97 16.43 17 1.40% 2.6 47% 1.40 0.00 1.40 0 0.91 0.05 0.98 1.0 0.052 36.06 52.49 0.080 1.55 0.94 0.23 0.80 1.10 1.0 0.038 3.52 57.87 0.098 3.84 2.69 2 1.461424 14.144 1.3542 16.428
15.256 5600.98 10.1 0.123 10.0 14.9 6.47 1.22%Sand-Slime Tailing 0.059 119.0 0.85 0.32 0.53 1 1.45 14.471 201.15 16.96 17 1.34% 2.6 47% 1.41 0.00 1.41 0 0.91 0.05 0.98 1.0 0.051 36.25 53.22 0.081 1.57 0.94 0.24 0.80 1.10 1.0 0.038 3.37 57.25 0.097 3.78 2.67 2 1.451498 14.607 1.3984 16.965
15.420 5600.82 8.8 0.119 8.6 32.5 14.09 1.36%Sand-Slime Tailing 0.059 119.0 0.86 0.32 0.54 1 1.44 12.356 171.74 14.69 15 1.50% 2.7 47% 1.42 0.00 1.42 0 0.91 0.05 0.98 1.0 0.051 35.45 50.14 0.078 1.51 0.94 0.22 0.80 1.10 1.0 0.038 3.95 58.10 0.098 3.78 2.65 2 1.441725 12.648 1.2109 14.690
15.584 5600.66 9.0 0.124 8.6 54.7 23.71 1.38%Sand-Slime Tailing 0.059 119.0 0.87 0.33 0.54 1 1.43 12.359 171.79 14.92 15 1.53% 2.7 47% 1.43 0.00 1.43 0 0.91 0.05 0.98 1.0 0.051 35.54 50.46 0.078 1.52 0.94 0.22 0.80 1.10 1.0 0.038 3.94 58.84 0.099 3.78 2.65 2 1.4321 12.848 1.2301 14.922
15.748 5600.49 9.1 0.139 8.8 60.7 26.31 1.52%Sand-Slime Tailing 0.059 119.0 0.88 0.33 0.55 1 1.42 12.476 173.42 15.12 15 1.68% 2.7 47% 1.43 0.00 1.43 0 0.91 0.05 0.97 1.0 0.051 35.60 50.72 0.078 1.53 0.94 0.22 0.80 1.09 1.0 0.038 4.07 61.49 0.102 3.85 2.69 2 1.42262 13.016 1.2461 15.117
15.912 5600.33 8.8 0.135 8.4 58.5 25.37 1.54%Sand-Slime Tailing 0.059 119.0 0.89 0.34 0.55 1 1.41 11.857 164.82 14.37 14 1.72% 2.7 47% 1.44 0.00 1.44 0 0.91 0.05 0.97 1.0 0.051 35.34 49.71 0.077 1.51 0.94 0.22 0.80 1.09 1.0 0.038 4.27 61.31 0.101 3.81 2.66 2 1.413283 12.374 1.1847 14.372
16.076 5600.16 8.0 0.083 7.6 54.0 23.40 1.04%Sand-Slime Tailing 0.059 119.0 0.90 0.34 0.56 1 1.40 10.699 148.72 12.98 13 1.18% 2.7 47% 1.45 0.00 1.45 0 0.91 0.05 0.98 1.0 0.051 34.85 47.83 0.075 1.48 0.94 0.21 0.80 1.09 1.0 0.038 3.97 51.55 0.093 3.46 2.47 2 1.404084 11.172 1.0696 12.976
16.240 5600.00 7.9 0.083 7.6 49.3 21.36 1.05%Sand-Slime Tailing 0.059 119.0 0.91 0.35 0.56 1 1.40 10.560 146.79 12.76 12 1.19% 2.7 47% 1.46 0.00 1.46 0 0.91 0.05 0.97 1.0 0.051 34.78 47.54 0.075 1.47 0.94 0.21 0.80 1.09 1.0 0.038 4.05 51.70 0.093 3.43 2.45 2 1.39502 10.99 1.0521 12.764
16.404 5599.84 7.2 0.093 6.8 64.6 27.99 1.29%Slime Tailings 0.057 113.1 0.92 0.35 0.57 1 1.39 9.446 131.29 11.62 11 1.48% 2.8 71% 1.47 0.00 1.47 0 0.90 0.05 0.98 1.0 0.051 34.13 45.75 0.074 1.44 0.94 0.20 0.80 1.09 1.0 0.038 4.74 55.05 0.096 3.51 2.47 2 1.387005 10.005 0.9579 11.620
16.568 5599.67 7.6 0.134 7.3 52.4 22.70 1.75%Slime Tailings 0.057 113.1 0.93 0.36 0.57 1 1.38 10.095 140.32 12.25 12 2.00% 2.8 71% 1.48 0.00 1.48 0 0.90 0.05 0.97 1.0 0.051 34.35 46.60 0.074 1.46 0.94 0.20 0.80 1.09 1.0 0.038 5.14 62.91 0.103 3.76 2.61 2 1.379094 10.546 1.0097 12.249
16.732 5599.51 6.9 0.131 6.6 54.4 23.55 1.89%Slime Tailings 0.057 113.1 0.94 0.36 0.57 1 1.37 9.064 125.99 11.07 10 2.18% 2.9 71% 1.49 0.00 1.49 0 0.90 0.05 0.97 1.0 0.051 33.94 45.01 0.073 1.43 0.94 0.19 0.80 1.08 1.0 0.038 5.74 63.53 0.104 3.76 2.60 2 1.371285 9.5295 0.9124 11.068
16.896 5599.34 8.8 0.147 8.5 39.7 17.21 1.67%Slime Tailings 0.057 113.1 0.95 0.37 0.58 1 1.36 11.645 161.86 13.92 14 1.88% 2.8 71% 1.50 0.00 1.50 0 0.90 0.05 0.97 1.0 0.051 34.93 48.85 0.076 1.51 0.94 0.22 0.80 1.08 1.0 0.038 4.57 63.62 0.104 3.74 2.62 2 1.363577 11.983 1.1472 13.918
17.060 5599.18 7.0 0.190 6.8 39.7 17.19 2.72%Slime Tailings 0.057 113.1 0.96 0.38 0.58 1 1.36 9.153 127.22 11.02 10 3.15% 3.0 71% 1.51 0.00 1.51 0 0.90 0.05 0.97 1.0 0.051 33.93 44.95 0.073 1.44 0.94 0.19 0.80 1.08 1.0 0.038 6.70 73.85 0.117 4.20 2.82 2 1.355966 9.4885 0.9084 11.020
17.224 5599.02 6.5 0.176 6.2 52.9 22.94 2.70%Slime Tailings 0.057 113.1 0.97 0.38 0.59 1 1.35 8.333 115.83 10.20 9 3.18% 3.0 71% 1.52 0.00 1.52 0 0.90 0.05 0.97 1.0 0.051 33.64 43.83 0.072 1.42 0.94 0.18 0.80 1.08 1.0 0.038 7.10 72.42 0.115 4.09 2.76 2 1.348452 8.779 0.8405 10.196
17.388 5598.85 7.9 0.164 7.7 33.1 14.33 2.07%Slime Tailings 0.057 113.1 0.98 0.39 0.59 1 1.34 10.339 143.72 12.33 12 2.36% 2.9 71% 1.53 0.00 1.53 0 0.90 0.05 0.97 1.0 0.050 34.38 46.71 0.074 1.47 0.94 0.20 0.80 1.08 1.0 0.038 5.52 68.04 0.109 3.85 2.66 2 1.341031 10.616 1.0164 12.330
17.552 5598.69 11.4 0.123 11.3 9.0 3.89 1.08%Sand-Slime Tailing 0.059 119.0 0.99 0.39 0.60 1 1.33 15.075 209.54 17.60 17 1.19% 2.6 47% 1.54 0.00 1.54 0 0.90 0.05 0.97 1.0 0.050 36.47 54.07 0.082 1.62 0.94 0.24 0.80 1.08 1.0 0.038 3.19 56.15 0.096 3.38 2.50 2 1.332865 15.149 1.4504 17.595
17.716 5598.52 11.9 0.100 11.9 9.2 3.97 0.84%Sand-Slime Tailing 0.059 119.0 1.00 0.40 0.60 1 1.32 15.752 218.95 18.38 18 0.91% 2.5 47% 1.55 0.00 1.55 0 0.89 0.05 0.97 1.0 0.050 36.75 55.13 0.083 1.65 0.94 0.25 0.80 1.07 1.0 0.038 2.79 51.35 0.093 3.22 2.43 2 1.324812 15.828 1.5154 18.383
17.880 5598.36 13.3 0.080 13.2 10.8 4.68 0.60%Sand-Slime Tailing 0.059 119.0 1.01 0.40 0.61 1 1.32 17.409 241.99 20.32 20 0.65% 2.4 47% 1.56 0.00 1.56 0 0.89 0.05 0.97 1.0 0.050 37.43 57.75 0.085 1.71 0.94 0.26 0.80 1.07 1.0 0.038 2.30 46.76 0.089 3.07 2.39 2 1.316868 17.498 1.6752 20.323
18.044 5598.20 11.4 0.112 11.3 11.6 5.01 0.98%Sand-Slime Tailing 0.059 119.0 1.02 0.41 0.61 1 1.31 14.805 205.79 17.31 17 1.08% 2.6 47% 1.57 0.00 1.57 0 0.89 0.05 0.97 1.0 0.050 36.37 53.68 0.081 1.62 0.93 0.24 0.80 1.07 1.0 0.038 3.13 54.15 0.095 3.25 2.43 2 1.309032 14.9 1.4265 17.305
18.208 5598.03 9.8 0.153 9.6 32.4 14.04 1.56%Sand-Slime Tailing 0.059 119.0 1.03 0.41 0.61 1 1.30 12.479 173.46 14.80 14 1.75% 2.7 47% 1.58 0.00 1.58 0 0.89 0.05 0.97 1.0 0.050 35.49 50.29 0.078 1.56 0.93 0.22 0.80 1.07 1.0 0.039 4.29 63.44 0.104 3.53 2.54 2 1.301302 12.743 1.22 14.800
18.372 5597.87 8.7 0.140 8.4 48.2 20.90 1.61%Slime Tailings 0.057 113.1 1.03 0.42 0.62 1 1.29 10.848 150.78 13.05 12 1.83% 2.8 71% 1.59 0.00 1.59 0 0.89 0.05 0.97 1.0 0.050 34.63 47.68 0.075 1.51 0.93 0.21 0.80 1.07 1.0 0.039 4.81 62.72 0.103 3.48 2.49 2 1.294458 11.237 1.0759 13.051
18.537 5597.70 13.2 0.140 13.0 34.0 14.71 1.06%Sand-Slime Tailing 0.059 119.0 1.04 0.42 0.62 1 1.29 16.691 232.01 19.70 19 1.15% 2.5 47% 1.60 0.00 1.60 0 0.89 0.05 0.97 1.0 0.050 37.21 56.91 0.085 1.70 0.93 0.26 0.80 1.07 1.0 0.039 2.92 57.59 0.098 3.28 2.49 2 1.286921 16.964 1.6241 19.703
18.701 5597.54 16.6 0.192 16.5 16.7 7.23 1.15%Sand-Slime Tailing 0.059 119.0 1.05 0.43 0.63 1 1.27 21.007 292.00 24.55 25 1.23% 2.5 47% 1.61 0.00 1.61 0 0.89 0.06 0.97 1.0 0.049 38.91 63.46 0.092 1.85 0.93 0.29 0.80 1.07 1.0 0.039 2.55 62.56 0.103 3.42 2.64 2 1.270069 21.139 2.0239 24.552
18.865 5597.38 18.6 0.304 18.5 20.3 8.79 1.64%Sand-Slime Tailing 0.059 119.0 1.06 0.43 0.63 1 1.26 23.192 322.37 27.12 28 1.74% 2.5 47% 1.62 0.00 1.62 0 0.89 0.06 0.96 1.0 0.049 39.81 66.93 0.096 1.94 0.93 0.30 0.80 1.06 1.0 0.039 2.76 74.88 0.119 3.94 2.94 2 1.257014 23.351 2.2356 27.121
19.029 5597.21 12.1 0.344 12.0 21.5 9.30 2.85%Slime Tailings 0.057 113.1 1.07 0.44 0.64 1 1.27 15.124 210.23 17.76 17 3.12% 2.8 71% 1.63 0.00 1.63 0 0.88 0.05 0.97 1.0 0.049 36.27 54.04 0.081 1.65 0.93 0.24 0.80 1.06 1.0 0.039 4.91 87.26 0.142 4.66 3.15 2 1.265644 15.294 1.4643 17.763
19.193 5597.05 10.5 0.228 10.4 14.6 6.31 2.17%Slime Tailings 0.057 113.1 1.08 0.44 0.64 1 1.26 13.121 182.38 15.37 15 2.42% 2.8 71% 1.63 0.00 1.63 0 0.88 0.05 0.97 1.0 0.049 35.44 50.81 0.078 1.58 0.93 0.23 0.80 1.06 1.0 0.039 4.83 74.31 0.118 3.86 2.72 2 1.259219 13.236 1.2672 15.372
19.357 5596.88 14.9 0.247 14.8 23.9 10.36 1.66%Sand-Slime Tailing 0.059 119.0 1.09 0.45 0.65 1 1.25 18.446 256.39 21.64 21 1.79% 2.6 47% 1.64 0.00 1.64 0 0.88 0.05 0.97 1.0 0.049 37.89 59.53 0.087 1.78 0.93 0.27 0.80 1.06 1.0 0.039 3.31 71.69 0.114 3.71 2.74 2 1.250547 18.632 1.7838 21.640
19.521 5596.72 13.9 0.205 13.8 21.2 9.20 1.47%Sand-Slime Tailing 0.059 119.0 1.10 0.45 0.65 1 1.25 17.183 238.84 20.15 20 1.60% 2.6 47% 1.65 0.00 1.65 0 0.88 0.05 0.97 1.0 0.049 37.37 57.52 0.085 1.73 0.93 0.26 0.80 1.06 1.0 0.039 3.32 66.95 0.108 3.48 2.61 2 1.245152 17.348 1.6609 20.149
19.685 5596.56 13.2 0.218 13.1 22.9 9.93 1.65%Sand-Slime Tailing 0.059 119.0 1.11 0.46 0.66 1 1.24 16.221 225.47 19.05 19 1.80% 2.7 47% 1.66 0.00 1.66 0 0.88 0.05 0.97 1.0 0.049 36.98 56.03 0.084 1.70 0.93 0.25 0.80 1.06 1.0 0.039 3.65 69.51 0.111 3.56 2.63 2 1.238251 16.398 1.57 19.046
19.849 5596.39 13.5 0.200 13.2 37.2 16.11 1.49%Sand-Slime Tailing 0.059 119.0 1.12 0.46 0.66 1 1.23 16.280 226.29 19.24 19 1.62% 2.6 47% 1.67 0.00 1.67 0 0.88 0.05 0.97 1.0 0.049 37.05 56.29 0.084 1.71 0.93 0.25 0.80 1.05 1.0 0.039 3.47 66.72 0.108 3.42 2.57 2 1.231438 16.565 1.586 19.240
20.013 5596.23 12.3 0.225 12.1 40.5 17.56 1.82%Sand-Slime Tailing 0.059 119.0 1.13 0.47 0.66 1 1.22 14.794 205.64 17.54 17 2.01% 2.7 47% 1.68 0.00 1.68 0 0.88 0.05 0.97 1.0 0.049 36.45 54.00 0.081 1.66 0.93 0.24 0.80 1.05 1.0 0.039 4.08 71.55 0.114 3.60 2.63 2 1.224709 15.104 1.4461 17.543
20.177 5596.06 11.2 0.272 11.1 13.6 5.88 2.44%Slime Tailings 0.057 113.1 1.14 0.47 0.67 1 1.22 13.492 187.53 15.79 15 2.72% 2.8 71% 1.69 0.00 1.69 0 0.87 0.05 0.97 1.0 0.049 35.59 51.38 0.079 1.61 0.93 0.23 0.80 1.05 1.0 0.039 5.03 79.45 0.127 3.98 2.80 2 1.218746 13.595 1.3016 15.789
20.341 5595.90 8.2 0.252 7.9 49.1 21.27 3.08%Slime Tailings 0.057 113.1 1.15 0.48 0.67 1 1.21 9.557 132.85 11.53 10 3.58% 3.0 71% 1.70 0.00 1.70 0 0.87 0.05 0.97 1.0 0.049 34.10 45.64 0.073 1.50 0.93 0.20 0.80 1.05 1.0 0.039 7.03 81.06 0.130 4.05 2.78 2 1.212849 9.9289 0.9506 11.532
20.505 5595.74 9.4 0.193 9.0 75.9 32.90 2.05%Slime Tailings 0.057 113.1 1.16 0.48 0.68 1 1.21 10.815 150.33 13.23 12 2.33% 2.9 71% 1.71 0.00 1.71 0 0.87 0.05 0.97 1.0 0.049 34.69 47.92 0.076 1.55 0.93 0.21 0.80 1.05 1.0 0.039 5.35 70.73 0.113 3.52 2.53 2 1.207016 11.387 1.0902 13.225
20.669 5595.57 9.3 0.202 9.0 52.0 22.51 2.18%Slime Tailings 0.057 113.1 1.17 0.49 0.68 1 1.20 10.763 149.61 12.95 12 2.49% 2.9 71% 1.72 0.00 1.72 0 0.87 0.05 0.97 1.0 0.049 34.60 47.55 0.075 1.54 0.92 0.21 0.80 1.05 1.0 0.039 5.58 72.33 0.115 3.57 2.56 2 1.201248 11.153 1.0678 12.953
20.833 5595.41 8.3 0.219 7.8 73.7 31.95 2.64%Slime Tailings 0.057 113.1 1.18 0.49 0.69 1 1.20 9.349 129.95 11.50 10 3.08% 3.0 71% 1.73 0.00 1.73 0 0.87 0.05 0.97 1.0 0.049 34.09 45.59 0.073 1.51 0.92 0.20 0.80 1.05 1.0 0.039 6.64 76.37 0.121 3.75 2.63 2 1.195541 9.8993 0.9478 11.497
20.997 5595.24 12.0 0.180 11.6 62.5 27.06 1.50%Sand-Slime Tailing 0.059 119.0 1.19 0.50 0.69 1 1.19 13.843 192.42 16.62 16 1.66% 2.7 47% 1.74 0.00 1.74 0 0.87 0.05 0.96 1.0 0.048 36.13 52.75 0.080 1.66 0.92 0.24 0.80 1.05 1.0 0.039 3.93 65.36 0.106 3.25 2.45 2 1.18925 14.307 1.3697 16.616
21.161 5595.08 19.0 0.205 19.0 5.5 2.37 1.08%Sand-Slime Tailing 0.059 119.0 1.20 0.50 0.69 1 1.17 22.300 309.97 25.95 26 1.15% 2.4 47% 1.75 0.00 1.75 0 0.87 0.06 0.96 1.0 0.048 39.40 65.35 0.094 1.95 0.92 0.29 0.80 1.04 1.0 0.039 2.42 62.89 0.103 3.15 2.55 2 1.174935 22.34 2.1389 25.947
21.325 5594.91 17.5 0.316 17.4 19.7 8.54 1.80%Sand-Slime Tailing 0.059 119.0 1.21 0.51 0.70 1 1.17 20.385 283.36 23.84 23 1.94% 2.6 47% 1.76 0.00 1.76 0 0.87 0.05 0.96 1.0 0.048 38.66 62.51 0.091 1.89 0.92 0.28 0.80 1.04 1.0 0.039 3.25 77.41 0.123 3.74 2.81 2 1.172249 20.53 1.9655 23.844
21.489 5594.75 17.3 0.420 17.1 33.3 14.41 2.43%Sand-Slime Tailing 0.059 119.0 1.22 0.51 0.70 1 1.17 19.921 276.90 23.42 23 2.62% 2.7 47% 1.77 0.00 1.77 0 0.86 0.05 0.96 1.0 0.048 38.51 61.93 0.090 1.88 0.92 0.28 0.80 1.04 1.0 0.039 3.80 88.94 0.145 4.40 3.14 2 1.166991 20.163 1.9304 23.418
21.653 5594.59 15.7 0.502 15.4 48.2 20.90 3.21%Slime Tailings 0.057 113.1 1.23 0.52 0.71 1 1.17 17.885 248.60 21.18 20 3.48% 2.8 71% 1.78 0.00 1.78 0 0.86 0.05 0.96 1.0 0.048 37.46 58.64 0.086 1.80 0.92 0.27 0.80 1.04 1.0 0.039 4.68 99.17 0.171 5.14 3.47 2 1.16515 18.236 1.7459 21.180
21.817 5594.42 15.8 0.368 15.7 17.6 7.63 2.33%Sand-Slime Tailing 0.059 119.0 1.24 0.52 0.71 1 1.16 18.175 252.63 21.26 20 2.53% 2.7 47% 1.79 0.00 1.79 0 0.86 0.05 0.96 1.0 0.048 37.76 59.01 0.087 1.81 0.92 0.27 0.80 1.04 1.0 0.039 4.01 85.19 0.137 4.12 2.96 2 1.159106 18.302 1.7523 21.257
21.981 5594.26 15.2 0.338 15.1 19.9 8.62 2.23%Sand-Slime Tailing 0.059 119.0 1.25 0.53 0.72 1 1.15 17.362 241.33 20.33 19 2.43% 2.7 47% 1.80 0.00 1.80 0 0.86 0.05 0.96 1.0 0.048 37.43 57.76 0.085 1.79 0.91 0.26 0.80 1.04 1.0 0.039 4.06 82.51 0.132 3.94 2.86 2 1.15363 17.505 1.676 20.332
22.145 5594.09 12.0 0.255 11.8 32.8 14.22 2.12%Slime Tailings 0.057 113.1 1.25 0.53 0.72 1 1.15 13.551 188.36 16.01 15 2.37% 2.8 71% 1.81 0.00 1.81 0 0.86 0.05 0.96 1.0 0.048 35.66 51.68 0.079 1.65 0.91 0.23 0.80 1.04 1.0 0.039 4.75 76.11 0.121 3.59 2.62 2 1.148424 13.787 1.3199 16.012
22.309 5593.93 8.6 0.140 8.2 71.6 31.03 1.62%Slime Tailings 0.057 113.1 1.26 0.54 0.73 1 1.14 9.341 129.83 11.44 10 1.90% 2.9 71% 1.82 0.00 1.82 0 0.86 0.05 0.97 1.0 0.048 34.07 45.51 0.073 1.53 0.91 0.20 0.80 1.03 1.0 0.039 5.55 63.50 0.104 3.07 2.30 2 1.143272 9.8516 0.9432 11.442
22.473 5593.77 9.5 0.099 9.0 82.5 35.75 1.04%Sand-Slime Tailing 0.059 119.0 1.27 0.54 0.73 1 1.14 10.238 142.31 12.57 11 1.20% 2.7 47% 1.83 0.00 1.83 0 0.86 0.05 0.96 1.0 0.048 34.71 47.28 0.075 1.57 0.91 0.20 0.80 1.03 1.0 0.039 4.33 54.47 0.095 2.79 2.18 2 1.137588 10.824 1.0363 12.572
22.638 5593.60 10.4 0.096 9.8 94.2 40.81 0.93%Sand-Slime Tailing 0.059 119.0 1.28 0.55 0.73 1 1.13 11.059 153.72 13.62 12 1.06% 2.7 47% 1.84 0.00 1.84 0 0.85 0.05 0.96 1.0 0.048 35.08 48.70 0.076 1.60 0.91 0.21 0.80 1.03 1.0 0.039 3.88 52.88 0.094 2.74 2.17 2 1.131968 11.725 1.1225 13.618
22.802 5593.44 9.9 0.099 9.3 99.2 43.00 1.00%Sand-Slime Tailing 0.059 119.0 1.29 0.55 0.74 1 1.13 10.431 144.98 12.92 12 1.15% 2.7 47% 1.85 0.00 1.84 1 0.85 0.05 0.96 1.0 0.048 34.83 47.76 0.075 1.58 0.91 0.21 0.80 1.03 1.0 0.039 4.18 54.08 0.095 2.75 2.17 2 1.126411 11.128 1.0654 12.925
22.966 5593.27 10.2 0.107 9.5 106.1 45.99 1.05%Sand-Slime Tailing 0.059 119.0 1.30 0.56 0.74 1 1.12 10.660 148.17 13.24 12 1.21% 2.7 47% 1.86 0.01 1.85 1 0.85 0.05 0.96 1.0 0.048 34.95 48.19 0.076 1.59 0.91 0.21 0.80 1.03 1.0 0.039 4.18 55.34 0.096 2.76 2.18 2 1.120916 11.403 1.0917 13.243
23.130 5593.11 10.7 0.153 10.0 111.1 48.14 1.44%Sand-Slime Tailing 0.059 119.0 1.31 0.56 0.75 1 1.12 11.110 154.43 13.80 12 1.64% 2.8 47% 1.87 0.01 1.85 1 0.85 0.05 0.96 1.0 0.048 35.14 48.94 0.076 1.60 0.90 0.21 0.80 1.03 1.0 0.039 4.56 63.00 0.103 2.96 2.28 2 1.115481 11.884 1.1378 13.802
23.294 5592.95 12.8 0.177 12.1 112.8 48.88 1.39%Sand-Slime Tailing 0.059 119.0 1.32 0.57 0.75 1 1.11 13.388 186.09 16.46 15 1.55% 2.7 47% 1.88 0.02 1.86 1 0.85 0.05 0.96 1.0 0.048 36.07 52.53 0.080 1.68 0.90 0.23 0.80 1.03 1.0 0.039 3.91 64.31 0.105 2.98 2.33 2 1.110106 14.17 1.3566 16.457
23.458 5592.78 14.7 0.172 14.3 63.4 27.46 1.17%Sand-Slime Tailing 0.059 119.0 1.33 0.57 0.76 1 1.10 15.787 219.45 18.84 18 1.29% 2.6 47% 1.88 0.02 1.86 1 0.85 0.05 0.96 1.0 0.048 36.91 55.75 0.083 1.75 0.90 0.25 0.80 1.03 1.0 0.039 3.27 61.70 0.102 2.87 2.31 2 1.10479 16.225 1.5533 18.844
23.622 5592.62 13.1 0.169 12.7 73.0 31.63 1.29%Sand-Slime Tailing 0.059 119.0 1.34 0.58 0.76 1 1.10 13.909 193.34 16.74 15 1.44% 2.7 47% 1.89 0.03 1.87 1 0.85 0.05 0.96 1.0 0.048 36.17 52.91 0.080 1.68 0.90 0.24 0.80 1.02 1.0 0.039 3.75 62.77 0.103 2.89 2.28 2 1.099532 14.41 1.3796 16.737
23.786 5592.45 13.9 0.141 13.4 84.0 36.41 1.02%Sand-Slime Tailing 0.059 119.0 1.35 0.58 0.77 1 1.09 14.609 203.07 17.63 16 1.13% 2.6 47% 1.90 0.03 1.87 1 0.85 0.05 0.96 1.0 0.048 36.49 54.12 0.082 1.71 0.90 0.24 0.80 1.02 1.0 0.039 3.27 57.67 0.098 2.72 2.21 2 1.09433 15.183 1.4537 17.635
23.950 5592.29 12.4 0.180 12.0 69.1 29.93 1.45%Sand-Slime Tailing 0.059 119.0 1.36 0.59 0.77 1 1.09 13.081 181.83 15.74 14 1.62% 2.7 47% 1.91 0.04 1.88 1 0.84 0.05 0.96 1.0 0.048 35.82 51.56 0.079 1.65 0.90 0.23 0.80 1.02 1.0 0.040 4.14 65.19 0.106 2.92 2.29 2 1.089184 13.551 1.2973 15.738
Liquef_SeismicSettle_30Aug2015.xls Page 9 of 36
Energy Fuels Resources (USA) Inc.
White Mesa MillLiquefaction Analyses
Data File: 13-52106_SP2W4-C-BSC-CPT 5611.20 Water surface elevation during CPT investigation (ft a5616.24 Ground Surface Elevation at time of CPT (ft amsl)Location: White Mesa 2013 CPT Investigation 0.15 5607.96 Water surface elevation at t0 (ft amsl)5626.19 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl)
..\..\..\6.2.3 Field Data\2013 Field Investigation\Conetec Dat 5.5 5593.50 Water surface elevation at t1 (ft amsl) 0.50 Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after pla 5626.19 5625.94 5625.69 0.50 0.055 110 0.028 0.014 0.00 0.00 0.028 0.014
Tailings Sands 1.69 5588.50 Water surface elevation at t2 (ft amsl)3.50 Thickness of Water Storage/Rooting Zone (ft) 5625.69 5623.94 5622.19 3.50 0.054 107 0.215 0.121 0.00 0.00 0.215 0.121
Tailings Sand-Slimes 4.00 Thickness of High Compaction Layer (ft)5622.19 5620.19 5618.19 4.00 0.060 120 0.454 0.334 0.00 0.00 0.454 0.334
Tailings Slimes 1.44 1.95 Thickness of Random/Platform Fill on on top of existing interim cover (ft) 5618.19 5617.22 5616.24 1.95 0.050 101 0.552 0.503 0.00 0.00 0.552 0.503
Interim Cover 0.47 1104.55 Additional Stress due to Final Cover Placement, ΔσFC (psf)
Cells Requiring User Input/Manipulation 2.21 2.21 7.51 5588.50 Elevation of bottom of tailings (liner) (ft amsl)
rd Cσ Kσ Ka rd Dr f Kσ Ka Avg CN qc1 qc1 qc1N
(ft) (ft amsl) TSF TSF TSF (ft) PSI (%) (tcf) (pcf) (tsf)(tsf)(tsf) 1=Yes TSF MPa % (tsf)(tsf)(tsf) 1=Yes FoS TSF MPa
0=No 0=No
Scaling Factor for stress ration, rm
Volumetric Strain Ratio for Site-Specific Design Earthq
Equiv. Number of Uniform Strain Cycles, N
Youd et al. (2001)
CSR
M=7.5,
s'v=1atm
0.15
Earthquake Moment Magnitude, M: 5.5
Magnitude Scaling Factor, MSF:
Equil Pore
Pressure at time of
Conditions at t1 Liquefaction Triggering Analyses Idriss & Boulanger (2008)Equil
Pore
Pressure
at t1CN qc1 qc1 qc1N
Normalized Cone
Penetration Resistance, Qt
Normalized Friction
Ratio, Fr (%)
Total Stress
at t1 Liquefiable?
1=Yes
2=No
Cyclic Stress RatioEffective
Stress at
t1
Saturated
at t1
Idriss & Boulanger (2008)
Idriss and Boulanger (2008)
Max. Horiz. Acceleration, Amax/g:
Earthquake Moment Magnitude, M:
Magnitude Scaling Factor, MSF:
WHITE MESA TAILINGS REPOSITORY LIQUEFACTION AND SEISMIC SETTLEMENT ANALYSES - 2W4-C Elev. at Top of Layer (ft)
Elev. At
Midpoint of Layer (ft)
Bottom
of Layer (ft)
Thickness of Layer (ft)
CSR
M=7.5,
s'v=1atm
Kc
High Compaction Layer
Platform/Random Fill Layer
Pw (u2)Pw (u2)
2013 CPT Data from ConeTec CPT Data Interpretations
fs/qt
Material Type (as determined
by fines
Unit Weight Unit Weight
Total Stress
at time of CPT
Depth
at time of CPT Elevation qt fs qc
Effective Stress at
time of CPT
Saturated
at time of CPT
Type Index, Ic FC
Youd, et al (2001)
Max. Horiz. Acceleration, Amax/g:
Stress at
Bottom of Layer (tsf)
Stress at
Midpoint of Layer (tsf)FINAL COVER
Erosion Protection Layer
Water Storage/Rooting Zone Layer
qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Equil Pore
Pressure at Midpoint of Layer (tsf)
Unit Weight (tcf)
Unit Weight (pcf)
Stress at
Bottom of Layer (tsf)
Stress at
Midpoint of Layer (tsf)
Pressure
at Bottom of Layer (tsf)
Cyclic Resistance Ratio
FoS
Cyclic Stress Ratio
FoS
∆qc1n qc1n-cs
(CRR)
M=7.5,
s'v=1atm
24.114 5592.13 12.8 0.188 11.8 149.2 64.65 1.47%Sand-Slime Tailing 0.059 119.0 1.37 0.60 0.78 1 1.08 12.814 178.11 16.06 15 1.65% 2.7 47% 1.92 0.04 1.88 1 0.84 0.05 0.96 1.0 0.048 35.93 51.99 0.079 1.66 0.90 0.23 0.80 1.02 1.0 0.040 4.11 66.05 0.107 2.93 2.29 2 1.084092 13.824 1.3235 16.055
24.278 5591.96 13.0 0.159 12.1 152.5 66.07 1.22%Sand-Slime Tailing 0.059 119.0 1.38 0.60 0.78 1 1.08 13.024 181.04 16.32 15 1.37% 2.7 47% 1.93 0.05 1.89 1 0.84 0.05 0.96 1.0 0.048 36.03 52.34 0.080 1.67 0.90 0.23 0.80 1.02 1.0 0.040 3.76 61.39 0.102 2.76 2.21 2 1.079055 14.051 1.3453 16.320
24.442 5591.80 13.9 0.175 13.0 152.5 66.07 1.26%Sand-Slime Tailing 0.059 119.0 1.39 0.61 0.79 1 1.07 13.931 193.64 17.37 16 1.40% 2.6 47% 1.94 0.05 1.89 1 0.84 0.05 0.96 1.0 0.048 36.39 53.76 0.081 1.69 0.89 0.24 0.80 1.02 1.0 0.040 3.62 62.94 0.103 2.79 2.24 2 1.074071 14.953 1.4316 17.367
24.606 5591.63 14.2 0.192 13.3 152.9 66.26 1.35%Sand-Slime Tailing 0.059 119.0 1.40 0.61 0.79 1 1.07 14.198 197.35 17.68 16 1.50% 2.7 47% 1.95 0.06 1.89 1 0.84 0.05 0.96 1.0 0.048 36.50 54.18 0.082 1.70 0.89 0.24 0.80 1.02 1.0 0.040 3.68 65.11 0.106 2.84 2.27 2 1.069139 15.219 1.457 17.676
24.770 5591.47 13.7 0.186 12.8 151.0 65.42 1.36%Sand-Slime Tailing 0.059 119.0 1.41 0.62 0.80 1 1.06 13.601 189.06 16.96 15 1.51% 2.7 47% 1.96 0.06 1.90 1 0.84 0.05 0.96 1.0 0.048 36.25 53.21 0.081 1.68 0.89 0.24 0.80 1.02 1.0 0.040 3.82 64.78 0.105 2.81 2.24 2 1.064258 14.604 1.3982 16.962
24.934 5591.31 12.8 0.197 12.0 120.3 52.12 1.54%Sand-Slime Tailing 0.059 119.0 1.42 0.62 0.80 1 1.06 12.734 177.01 15.71 14 1.74% 2.7 47% 1.97 0.07 1.90 1 0.84 0.05 0.96 1.0 0.048 35.81 51.53 0.079 1.64 0.89 0.23 0.80 1.01 1.0 0.040 4.29 67.41 0.108 2.87 2.26 2 1.059427 13.53 1.2953 15.714
25.098 5591.14 11.7 0.209 10.9 127.8 55.38 1.79%Sand-Slime Tailing 0.059 119.0 1.43 0.63 0.80 1 1.05 11.464 159.35 14.29 13 2.04% 2.8 47% 1.98 0.07 1.91 1 0.83 0.05 0.96 1.0 0.048 35.31 49.61 0.077 1.60 0.89 0.22 0.80 1.01 1.0 0.040 4.93 70.46 0.113 2.96 2.28 2 1.054647 12.305 1.1781 14.292
25.262 5590.98 11.2 0.195 10.6 97.8 42.36 1.74%Sand-Slime Tailing 0.059 119.0 1.44 0.63 0.81 1 1.05 11.150 154.99 13.69 12 1.99% 2.8 47% 1.99 0.08 1.91 1 0.83 0.05 0.96 1.0 0.048 35.10 48.80 0.076 1.58 0.89 0.21 0.80 1.01 1.0 0.040 5.04 69.04 0.111 2.89 2.24 2 1.049915 11.791 1.1288 13.694
25.426 5590.81 11.4 0.160 10.8 101.4 43.94 1.41%Sand-Slime Tailing 0.059 119.0 1.45 0.64 0.81 1 1.05 11.236 156.18 13.82 12 1.61% 2.8 47% 2.00 0.08 1.92 1 0.83 0.05 0.96 1.0 0.048 35.15 48.97 0.077 1.59 0.89 0.21 0.80 1.01 1.0 0.040 4.60 63.56 0.104 2.70 2.14 2 1.045231 11.898 1.1391 13.819
25.590 5590.65 11.2 0.149 10.6 105.8 45.83 1.33%Sand-Slime Tailing 0.059 119.0 1.46 0.64 0.82 1 1.04 10.978 152.60 13.55 12 1.53% 2.8 47% 2.01 0.09 1.92 1 0.83 0.05 0.96 1.0 0.048 35.05 48.60 0.076 1.58 0.88 0.21 0.80 1.01 1.0 0.040 4.58 62.02 0.102 2.63 2.11 2 1.040595 11.665 1.1168 13.549
25.754 5590.49 11.6 0.159 11.1 86.4 37.44 1.37%Sand-Slime Tailing 0.059 119.0 1.47 0.65 0.82 1 1.04 11.458 159.27 13.96 12 1.57% 2.8 47% 2.02 0.09 1.93 1 0.83 0.05 0.96 1.0 0.048 35.20 49.15 0.077 1.59 0.88 0.22 0.80 1.01 1.0 0.040 4.53 63.18 0.103 2.65 2.12 2 1.036005 12.017 1.1505 13.957
25.918 5590.32 11.7 0.182 11.0 108.2 46.89 1.56%Sand-Slime Tailing 0.059 119.0 1.48 0.65 0.83 1 1.03 11.356 157.85 14.00 12 1.78% 2.8 47% 2.03 0.10 1.93 1 0.83 0.05 0.96 1.0 0.048 35.21 49.21 0.077 1.59 0.88 0.22 0.80 1.01 1.0 0.041 4.76 66.63 0.108 2.74 2.16 2 1.031462 12.053 1.154 13.999
26.082 5590.16 11.7 0.204 11.1 102.1 44.24 1.74%Sand-Slime Tailing 0.059 119.0 1.49 0.66 0.83 1 1.03 11.368 158.02 13.96 12 2.00% 2.8 47% 2.04 0.10 1.94 1 0.83 0.05 0.96 1.0 0.048 35.20 49.16 0.077 1.59 0.88 0.22 0.80 1.01 1.0 0.041 5.00 69.81 0.112 2.82 2.20 2 1.026963 12.023 1.1511 13.964
26.246 5589.99 11.8 0.197 11.1 100.4 43.51 1.67%Sand-Slime Tailing 0.059 119.0 1.50 0.66 0.84 1 1.02 11.391 158.33 13.97 12 1.92% 2.8 47% 2.05 0.11 1.94 1 0.82 0.05 0.96 1.0 0.048 35.20 49.18 0.077 1.58 0.88 0.22 0.80 1.01 1.0 0.041 4.92 68.75 0.110 2.77 2.18 2 1.022509 12.032 1.1519 13.974
26.410 5589.83 11.4 0.197 10.8 88.6 38.40 1.73%Sand-Slime Tailing 0.059 119.0 1.51 0.67 0.84 1 1.02 11.016 153.12 13.45 12 2.00% 2.8 47% 2.06 0.11 1.95 1 0.82 0.05 0.96 1.0 0.048 35.02 48.47 0.076 1.57 0.88 0.21 0.80 1.00 1.0 0.041 5.15 69.27 0.111 2.77 2.17 2 1.018098 11.579 1.1086 13.448
26.574 5589.67 10.5 0.197 10.0 88.3 38.26 1.87%Sand-Slime Tailing 0.059 119.0 1.52 0.67 0.85 1 1.01 10.127 140.77 12.41 11 2.18% 2.9 47% 2.07 0.12 1.95 1 0.82 0.05 0.96 1.0 0.048 34.65 47.07 0.075 1.54 0.88 0.20 0.80 1.00 1.0 0.041 5.67 70.40 0.112 2.79 2.16 2 1.013731 10.686 1.0231 12.411
Liquef_SeismicSettle_30Aug2015.xls Page 10 of 36
Energy Fuels Resources (USA) Inc.
White Mesa MillLiquefaction Analyses
Data File: 13-52106_SP2W5-C-BSC-CPT 5604.20 Water surface elevation during CPT investigation (ft5615.86 Ground Surface Elevation at time of CPT (ft amsl)Location: White Mesa 2013 CPT Investigation 0.15 5604.20 Water surface elevation at t0 (ft amsl)5626.28 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl)
..\..\..\6.2.3 Field Data\2013 Field Investigation\Conetec Dat 5.5 5589.01 Water surface elevation at t1 (ft amsl) 0.50 Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after pla ###### 5626.03 5625.78 0.50 0.055 110 0.028 0.014 0.00 0.00 0.028 0.014
Tailings Sands 1.69 5584.01 Water surface elevation at t2 (ft amsl)3.50 Thickness of Water Storage/Rooting Zone (ft) ######5624.03 5622.28 3.50 0.054 107 0.215 0.121 0.00 0.00 0.215 0.121
Tailings Sand-Slimes 4.00 Thickness of High Compaction Layer (ft)###### 5620.28 5618.28 4.00 0.060 120 0.454 0.334 0.00 0.00 0.454 0.334
Tailings Slimes 1.44 2.42 Thickness of Random/Platform Fill on on top of existing interim cover (ft) ###### 5617.07 5615.86 2.42 0.050 101 0.576 0.515 0.00 0.00 0.576 0.515
Interim Cover 0.47 1151.89 Additional Stress due to Final Cover Placement, ΔσFC (psf)
Cells Requiring User Input/Manipulation 2.21 2.21 7.51 5584.01 Elevation of bottom of tailings (liner) (ft amsl)
rd Cσ Kσ Ka rd Dr f Kσ Ka Avg CN qc1 qc1 qc1N
(ft) (ft amsl) TSF TSF TSF (ft) PSI (%) (tcf) (pcf) (tsf)(tsf)(tsf) 1=Yes TSF MPa % (tsf)(tsf)(tsf) 1=Yes FoS TSF MPa
0=No 0=No
0.164 5615.70 4.8 0.029 4.8 1.1 0.49 0.60%Interim Cover 0.050 100.7 0.01 0.00 0.01 0 1.70 8.143 113.19 9.47 580 0.61% 1.2 51% 0.58 0.00 0.58 0 1.00 0.04 1.02 1.0 0.059 33.64 43.12 0.071 1.21 0.98 0.18 0.80 2.53 1.0 0.017 1.00 9.47 0.058 4.26 2.74 2 1.7 8.155 0.7808 9.472
0.328 5615.53 11.7 0.170 11.6 8.2 3.56 1.46%Interim Cover 0.050 100.7 0.02 0.00 0.02 0 1.70 19.737 274.34 23.02 705 1.46% 1.5 51% 0.59 0.00 0.59 0 1.00 0.05 1.02 1.0 0.059 38.40 61.43 0.089 1.52 0.97 0.28 0.80 2.20 1.0 0.019 1.00 23.02 0.069 4.34 2.93 2 1.7 19.824 1.898 23.025
0.492 5615.37 34.1 0.408 34.1 8.9 3.84 1.20%Interim Cover 0.050 100.7 0.02 0.00 0.02 0 1.70 57.885 804.60 67.34 1375 1.20% 1.3 51% 0.60 0.00 0.60 0 1.00 0.08 1.03 1.0 0.060 53.95 121.29 0.182 3.06 0.97 0.47 0.76 2.32 1.0 0.019 1.00 67.34 0.108 6.40 4.73 2 1.7 57.979 5.5509 67.339
0.656 5615.20 51.6 0.661 51.6 1.4 0.59 1.28%Interim Cover 0.050 100.7 0.03 0.00 0.03 0 1.70 87.686 1218.84 101.86 1560 1.28% 1.4 51% 0.61 0.00 0.61 0 1.00 0.11 1.04 1.0 0.060 66.07 167.92 0.388 6.46 0.97 0.58 0.71 2.59 1.0 0.017 1.00 101.86 0.178 11.62 9.04 2 1.7 87.7 8.3964 101.859
0.820 5615.04 73.2 1.112 73.1 6.6 2.84 1.52%Interim Cover 0.050 100.7 0.04 0.00 0.04 0 1.70 124.304 1727.83 144.45 1770 1.52% 1.4 51% 0.62 0.00 0.62 0 1.00 0.15 1.05 1.0 0.061 81.01 225.47 1.000 16.46 0.97 0.69 0.65 2.87 1.0 0.015 1.00 144.45 0.360 23.84 20.15 2 1.7 124.37 11.908 144.452
0.984 5614.88 89.2 1.392 89.2 -0.9 -0.37 1.56%Interim Cover 0.050 100.7 0.05 0.00 0.05 0 1.70 151.606 2107.32 176.07 1798 1.56% 1.4 51% 0.63 0.00 0.63 0 1.00 0.20 1.07 1.0 0.062 92.11 268.18 1.000 16.24 0.97 0.77 0.62 2.98 1.0 0.014 1.00 176.07 1.000 62.26 39.25 2 1.7 151.6 14.514 176.071
1.148 5614.71 116.0 1.613 115.8 37.9 16.43 1.39%Interim Cover 0.050 100.7 0.06 0.00 0.06 0 1.70 196.792 2735.41 229.03 2005 1.39% 1.4 51% 0.63 0.00 0.63 0 1.00 0.30 1.09 1.0 0.063 110.69 339.72 1.000 15.84 0.97 0.87 0.60 2.95 1.0 0.015 1.00 229.03 1.000 54.71 35.28 2 1.7 197.19 18.879 229.029
1.312 5614.55 135.8 1.481 135.7 12.6 5.44 1.09%Interim Cover 0.050 100.7 0.07 0.00 0.07 0 1.70 230.724 3207.06 268.13 2054 1.09% 1.3 51% 0.64 0.00 0.64 0 1.00 0.30 1.09 1.0 0.063 124.41 392.54 1.000 15.90 0.97 0.95 0.60 2.79 1.0 0.015 1.00 268.13 1.000 65.11 40.50 2 1.7 230.86 22.102 268.127
1.476 5614.38 141.1 2.556 141.0 16.3 7.07 1.81%Interim Cover 0.050 100.7 0.07 0.00 0.07 0 1.70 239.717 3332.07 278.62 1897 1.81% 1.5 51% 0.65 0.00 0.65 0 1.00 0.30 1.08 1.0 0.063 128.10 406.71 1.000 15.95 0.97 0.96 0.60 2.66 1.0 0.016 1.00 278.62 1.000 62.14 39.05 2 1.7 239.89 22.967 278.618
1.640 5614.22 158.3 2.323 158.2 7.6 3.31 1.47%Interim Cover 0.050 100.7 0.08 0.00 0.08 0 1.70 268.974 3738.74 312.49 1915 1.47% 1.4 51% 0.66 0.00 0.66 0 1.00 0.30 1.08 1.0 0.062 139.98 452.47 1.000 16.01 0.97 1.02 0.60 2.55 1.0 0.017 1.00 312.49 1.000 243.22 129.62 2 1.7 269.05 25.759 312.491
1.804 5614.06 219.1 2.632 219.1 7.2 3.12 1.20%Interim Cover 0.050 100.7 0.09 0.00 0.09 0 1.70 372.453 5177.10 432.67 2410 1.20% 1.3 51% 0.67 0.00 0.67 0 1.00 0.30 1.08 1.0 0.062 182.16 614.83 1.000 16.07 0.97 1.20 0.60 2.46 1.0 0.017 1.00 432.67 1.000 221.20 118.63 2 1.7 372.53 35.666 432.671
1.968 5613.89 216.1 2.814 216.0 10.4 4.50 1.30%Interim Cover 0.050 100.7 0.10 0.00 0.10 0 1.70 367.251 5104.79 426.67 2179 1.30% 1.3 51% 0.68 0.00 0.68 0 1.00 0.30 1.07 1.0 0.062 180.05 606.72 1.000 16.13 0.97 1.19 0.60 2.37 1.0 0.018 1.00 426.67 1.000 202.84 109.49 2 1.7 367.36 35.171 426.668
2.133 5613.73 184.6 2.875 184.5 8.4 3.65 1.56%Interim Cover 0.050 100.7 0.11 0.00 0.11 0 1.70 313.718 4360.68 364.47 1718 1.56% 1.4 51% 0.68 0.00 0.68 0 1.00 0.30 1.07 1.0 0.062 158.22 522.69 1.000 16.20 0.97 1.10 0.60 2.30 1.0 0.019 1.00 364.47 1.000 187.31 101.76 2 1.7 313.81 30.044 364.468
2.297 5613.56 191.7 3.125 191.7 11.1 4.81 1.63%Interim Cover 0.050 100.7 0.12 0.00 0.12 0 1.70 325.524 4524.79 378.21 1657 1.63% 1.5 51% 0.69 0.00 0.69 0 1.00 0.30 1.07 1.0 0.061 163.05 541.26 1.000 16.27 0.97 1.12 0.60 2.23 1.0 0.019 1.00 378.21 1.000 174.00 95.14 2 1.69827 325.64 31.177 378.214
2.461 5613.40 166.4 3.732 166.3 8.8 3.82 2.24%Interim Cover 0.050 100.7 0.12 0.00 0.12 0 1.67 277.345 3855.09 322.23 1342 2.24% 1.6 51% 0.70 0.00 0.70 0 1.00 0.30 1.06 1.0 0.061 143.40 465.63 1.000 16.34 0.97 1.04 0.60 2.17 1.0 0.020 1.00 322.23 1.000 162.47 89.40 2 1.667638 277.44 26.562 322.226
2.625 5613.24 152.8 3.596 152.7 5.5 2.40 2.35%Interim Cover 0.050 100.7 0.13 0.00 0.13 0 1.64 250.398 3480.54 290.89 1155 2.36% 1.6 51% 0.71 0.00 0.71 0 1.00 0.30 1.06 1.0 0.061 132.40 423.29 1.000 16.41 0.97 0.98 0.60 2.12 1.0 0.020 1.00 290.50 1.000 152.37 84.39 2 1.639484 250.45 23.979 290.888
2.789 5613.07 141.7 3.046 141.7 2.9 1.26 2.15%Interim Cover 0.050 100.7 0.14 0.00 0.14 0 1.61 228.613 3177.71 265.55 1008 2.15% 1.6 51% 0.72 0.00 0.72 0 0.99 0.30 1.06 1.0 0.061 123.51 389.07 1.000 16.48 0.97 0.94 0.60 2.07 1.0 0.021 1.00 265.55 1.000 143.47 79.97 2 1.61347 228.64 21.89 265.554
2.953 5612.91 135.3 2.327 135.3 3.0 1.28 1.72%Interim Cover 0.050 100.7 0.15 0.00 0.15 0 1.60 216.180 3004.91 251.11 909 1.72% 1.5 51% 0.72 0.00 0.72 0 0.99 0.30 1.05 1.0 0.060 118.44 369.56 1.000 16.55 0.97 0.91 0.60 2.02 1.0 0.021 1.00 251.11 1.000 135.55 76.05 2 1.598376 216.21 20.7 251.115
3.117 5612.74 130.1 2.548 130.1 2.3 0.98 1.96%Interim Cover 0.050 100.7 0.16 0.00 0.16 0 1.60 208.503 2898.19 242.19 828 1.96% 1.6 51% 0.73 0.00 0.73 0 0.99 0.30 1.05 1.0 0.060 115.31 357.50 1.000 16.62 0.97 0.90 0.60 1.98 1.0 0.022 1.00 242.19 1.000 128.47 72.54 2 1.603006 208.53 19.964 242.190
3.281 5612.58 111.7 2.753 111.7 2.9 1.27 2.46%Sand-Slime Tailing 0.047 93.3 0.16 0.00 0.16 0 1.67 186.121 2587.09 216.20 678 2.47% 1.7 47% 0.74 0.00 0.74 0 0.99 0.30 1.05 1.0 0.060 106.13 322.33 1.000 16.68 0.97 0.85 0.60 1.94 1.0 0.022 1.06 229.38 1.000 122.54 69.61 2 1.666111 186.15 17.822 216.204
3.445 5612.42 108.0 2.637 108.0 2.3 1.00 2.44%Sand-Slime Tailing 0.047 93.3 0.17 0.00 0.17 0 1.67 180.028 2502.39 209.12 626 2.45% 1.7 47% 0.75 0.00 0.75 0 0.99 0.29 1.04 1.0 0.060 103.64 312.76 1.000 16.76 0.97 0.83 0.60 1.90 1.0 0.022 1.07 223.18 1.000 117.15 66.95 2 1.666926 180.05 17.238 209.119
3.609 5612.25 115.0 1.758 115.0 1.5 0.66 1.53%Sand Tailings 0.051 102.8 0.18 0.00 0.18 0 1.62 186.160 2587.62 216.23 635 1.53% 1.6 18% 0.76 0.00 0.76 0 0.99 0.30 1.04 1.0 0.059 77.37 293.60 1.000 16.81 0.97 0.85 0.60 1.87 1.0 0.023 1.00 216.23 1.000 111.72 64.27 2 1.618783 186.18 17.824 216.231
3.773 5612.09 130.6 2.562 130.6 2.0 0.88 1.96%Sand Tailings 0.051 102.8 0.19 0.00 0.19 0 1.54 201.640 2802.79 234.22 690 1.96% 1.6 18% 0.77 0.00 0.77 0 0.99 0.30 1.04 1.0 0.059 81.97 316.18 1.000 16.88 0.97 0.88 0.60 1.83 1.0 0.023 1.00 234.22 1.000 106.79 61.83 2 1.54395 201.66 19.307 234.215
3.937 5611.92 134.1 2.416 134.1 2.0 0.88 1.80%Sand Tailings 0.051 102.8 0.20 0.00 0.20 0 1.52 203.635 2830.52 236.53 678 1.80% 1.6 18% 0.77 0.00 0.77 0 0.99 0.30 1.03 1.0 0.059 82.56 319.09 1.000 16.95 0.97 0.89 0.60 1.80 1.0 0.024 1.00 236.53 1.000 102.27 59.61 2 1.518641 203.65 19.498 236.532
4.101 5611.76 107.5 2.141 107.5 1.8 0.76 1.99%Sand Tailings 0.051 102.8 0.21 0.00 0.21 0 1.60 172.196 2393.53 200.02 521 2.00% 1.7 18% 0.78 0.00 0.78 0 0.99 0.26 1.03 1.0 0.059 73.22 273.24 1.000 17.08 0.97 0.82 0.60 1.77 1.0 0.024 1.04 207.11 1.000 98.12 57.60 2 1.601976 172.21 16.488 200.016
4.265 5611.59 96.2 1.939 96.1 5.9 2.54 2.02%Sand-Slime Tailing 0.047 93.3 0.21 0.00 0.21 0 1.64 157.282 2186.22 182.74 449 2.02% 1.7 47% 0.79 0.00 0.79 0 0.99 0.22 1.02 1.0 0.058 94.39 277.14 1.000 17.21 0.97 0.78 0.61 1.72 1.0 0.025 1.06 193.46 1.000 94.64 55.92 2 1.636141 157.34 15.064 182.743
4.429 5611.43 67.8 1.878 67.8 0.9 0.39 2.77%Sand-Slime Tailing 0.047 93.3 0.22 0.00 0.22 0 1.70 115.175 1600.93 133.78 305 2.78% 1.9 47% 0.80 0.00 0.80 0 0.99 0.14 1.01 1.0 0.058 77.22 211.00 1.000 17.36 0.97 0.67 0.67 1.57 1.0 0.027 1.22 163.57 1.000 91.41 54.38 2 1.7 115.18 11.028 133.780
4.593 5611.27 82.0 1.346 81.9 5.5 2.36 1.64%Sand Tailings 0.051 102.8 0.23 0.00 0.23 0 1.67 136.924 1903.24 159.09 356 1.65% 1.7 18% 0.81 0.00 0.81 0 0.98 0.17 1.01 1.0 0.058 62.76 221.86 1.000 17.36 0.96 0.73 0.64 1.62 1.0 0.026 1.04 165.68 1.000 88.09 52.73 2 1.671027 136.98 13.115 159.095
4.757 5611.10 80.0 1.313 80.0 1.7 0.75 1.64%Sand Tailings 0.051 102.8 0.24 0.00 0.24 0 1.66 133.066 1849.61 154.57 335 1.65% 1.7 18% 0.81 0.00 0.81 0 0.98 0.17 1.01 1.0 0.057 61.60 216.17 1.000 17.42 0.96 0.72 0.64 1.59 1.0 0.027 1.05 162.43 1.000 85.00 51.21 2 1.663111 133.08 12.741 154.568
4.921 5610.94 93.3 1.401 93.3 3.1 1.33 1.50%Sand Tailings 0.051 102.8 0.25 0.00 0.25 0 1.59 147.935 2056.29 171.85 377 1.51% 1.7 18% 0.82 0.00 0.82 0 0.98 0.20 1.01 1.0 0.057 66.02 237.88 1.000 17.44 0.96 0.76 0.62 1.61 1.0 0.026 1.01 173.52 1.000 82.13 49.78 2 1.58643 147.96 14.166 171.852
5.085 5610.77 97.4 1.343 97.4 3.2 1.40 1.38%Sand Tailings 0.051 102.8 0.26 0.00 0.26 0 1.56 151.462 2105.33 175.95 381 1.38% 1.6 18% 0.83 0.00 0.83 0 0.98 0.20 1.01 1.0 0.057 67.07 243.02 1.000 17.49 0.96 0.77 0.62 1.59 1.0 0.027 1.00 175.95 1.000 79.44 48.47 2 1.555375 151.49 14.504 175.951
5.249 5610.61 63.5 1.284 63.5 0.9 0.40 2.02%Sand-Slime Tailing 0.047 93.3 0.26 0.00 0.26 0 1.70 107.951 1500.52 125.39 241 2.03% 1.9 47% 0.84 0.00 0.84 0 0.98 0.13 1.00 1.0 0.057 74.28 199.67 1.000 17.57 0.96 0.65 0.68 1.47 1.0 0.029 1.17 146.26 0.371 28.62 23.10 2 1.698942 107.96 10.336 125.390
5.413 5610.45 54.2 0.816 54.2 -0.6 -0.24 1.51%Sand-Slime Tailing 0.047 93.3 0.27 0.00 0.27 0 1.70 92.072 1279.80 106.93 199 1.51% 1.8 47% 0.85 0.00 0.85 0 0.98 0.11 1.00 1.0 0.057 67.80 174.73 0.460 8.11 0.96 0.60 0.70 1.41 1.0 0.030 1.13 120.33 0.242 18.15 13.13 2 1.7 92.066 8.8144 106.929
5.577 5610.28 38.7 0.729 38.7 -0.7 -0.30 1.88%Sand-Slime Tailing 0.047 93.3 0.28 0.00 0.28 0 1.70 65.841 915.19 76.46 138 1.90% 2.0 47% 0.85 0.00 0.85 0 0.98 0.09 1.00 1.0 0.057 57.12 133.58 0.213 3.75 0.96 0.50 0.75 1.33 1.0 0.032 1.30 99.66 0.172 12.55 8.15 2 1.7 65.834 6.3029 76.462
5.741 5610.12 35.6 0.520 35.6 0.1 0.04 1.46%Sand-Slime Tailing 0.047 93.3 0.29 0.00 0.29 0 1.70 60.520 841.23 70.29 124 1.47% 2.0 47% 0.86 0.00 0.86 0 0.98 0.08 1.00 1.0 0.057 54.95 125.25 0.191 3.38 0.96 0.48 0.76 1.31 1.0 0.032 1.25 87.61 0.143 10.13 6.75 2 1.7 60.521 5.7943 70.292
5.905 5609.95 32.6 0.386 32.6 -0.6 -0.28 1.18%Sand-Slime Tailing 0.047 93.3 0.29 0.00 0.29 0 1.70 55.420 770.34 64.36 110 1.19% 1.9 47% 0.87 0.00 0.87 0 0.98 0.08 1.00 1.0 0.056 52.87 117.23 0.174 3.08 0.96 0.46 0.77 1.28 1.0 0.033 1.22 78.38 0.125 8.64 5.86 2 1.7 55.413 5.3053 64.359
6.069 5609.79 31.4 0.323 31.4 -0.6 -0.25 1.03%Sand-Slime Tailing 0.047 93.3 0.30 0.00 0.30 0 1.70 53.346 741.51 61.95 103 1.04% 1.9 47% 0.88 0.00 0.88 0 0.98 0.08 1.00 1.0 0.056 52.03 113.98 0.167 2.97 0.96 0.45 0.77 1.27 1.0 0.033 1.20 74.27 0.118 7.97 5.47 2 1.7 53.34 5.1068 61.951
6.234 5609.63 27.6 0.437 27.6 -0.4 -0.19 1.59%Sand-Slime Tailing 0.047 93.3 0.31 0.00 0.31 0 1.70 46.852 651.24 54.41 88 1.60% 2.1 47% 0.88 0.00 0.88 0 0.98 0.07 1.00 1.0 0.056 49.38 103.79 0.149 2.65 0.96 0.43 0.79 1.24 1.0 0.034 1.43 77.86 0.124 8.16 5.40 2 1.7 46.847 4.4852 54.410
6.398 5609.46 19.4 0.406 19.4 -0.6 -0.24 2.09%Sand-Slime Tailing 0.047 93.3 0.32 0.00 0.32 0 1.70 32.963 458.19 38.28 60 2.13% 2.3 47% 0.89 0.00 0.89 0 0.97 0.06 1.00 1.0 0.056 43.73 82.00 0.115 2.05 0.96 0.36 0.80 1.22 1.0 0.035 1.92 73.58 0.117 7.52 4.79 2 1.7 32.957 3.1553 38.278
6.562 5609.30 22.0 0.353 22.0 0.9 0.39 1.60%Sand-Slime Tailing 0.047 93.3 0.32 0.00 0.32 0 1.70 37.400 519.86 43.45 67 1.63% 2.2 47% 0.90 0.00 0.90 0 0.97 0.07 1.00 1.0 0.056 45.54 88.99 0.125 2.24 0.96 0.38 0.80 1.22 1.0 0.035 1.62 70.38 0.112 7.06 4.65 2 1.7 37.41 3.5816 43.449
6.726 5609.13 32.3 0.314 32.3 1.2 0.51 0.97%Sand-Slime Tailing 0.047 93.3 0.33 0.00 0.33 0 1.70 54.961 763.96 63.85 97 0.98% 1.9 47% 0.91 0.00 0.91 0 0.97 0.08 1.00 1.0 0.056 52.69 116.54 0.172 3.08 0.96 0.46 0.77 1.25 1.0 0.034 1.21 76.95 0.122 7.51 5.29 2 1.7 54.974 5.2632 63.848
6.890 5608.97 36.5 0.296 36.5 0.3 0.11 0.81%Sand Tailings 0.051 102.8 0.34 0.00 0.34 0 1.70 61.932 860.85 71.93 106 0.82% 1.8 18% 0.92 0.00 0.92 0 0.97 0.09 0.99 1.0 0.056 40.48 112.41 0.164 2.94 0.96 0.49 0.76 1.26 1.0 0.034 1.13 81.47 0.130 7.80 5.37 2 1.69536 61.934 5.9296 71.933
7.054 5608.81 37.5 0.279 37.5 0.2 0.10 0.74%Sand Tailings 0.051 102.8 0.35 0.00 0.35 0 1.67 62.634 870.61 72.75 107 0.75% 1.8 18% 0.92 0.00 0.92 0 0.97 0.09 0.99 1.0 0.056 40.69 113.44 0.166 2.98 0.96 0.49 0.75 1.25 1.0 0.034 1.11 81.07 0.130 7.57 5.28 2 1.668458 62.636 5.9968 72.748
7.218 5608.64 38.6 0.335 38.6 0.2 0.10 0.87%Sand Tailings 0.051 102.8 0.36 0.00 0.36 0 1.64 63.426 881.62 73.67 107 0.88% 1.9 18% 0.93 0.00 0.93 0 0.97 0.09 0.99 1.0 0.056 40.92 114.59 0.169 3.03 0.96 0.50 0.75 1.24 1.0 0.034 1.15 84.37 0.136 7.75 5.39 2 1.642315 63.428 6.0726 73.668
7.382 5608.48 38.6 0.379 38.6 0.0 0.02 0.98%Sand-Slime Tailing 0.047 93.3 0.36 0.00 0.36 0 1.63 62.785 872.71 72.92 105 0.99% 1.9 47% 0.94 0.00 0.94 0 0.97 0.09 0.99 1.0 0.056 55.88 128.80 0.200 3.60 0.96 0.49 0.75 1.24 1.0 0.034 1.18 86.12 0.139 7.79 5.70 2 1.625714 62.785 6.0111 72.922
7.546 5608.31 38.2 0.414 38.2 -0.4 -0.19 1.08%Sand-Slime Tailing 0.047 93.3 0.37 0.00 0.37 0 1.61 61.540 855.40 71.47 102 1.10% 1.9 47% 0.95 0.00 0.95 0 0.97 0.08 0.99 1.0 0.055 55.37 126.84 0.195 3.52 0.96 0.49 0.76 1.23 1.0 0.034 1.22 87.14 0.142 7.75 5.63 2 1.612257 61.536 5.8914 71.470
7.710 5608.15 37.4 0.416 37.4 -0.5 -0.20 1.11%Sand-Slime Tailing 0.047 93.3 0.38 0.00 0.38 0 1.60 59.889 832.45 69.55 97 1.12% 2.0 47% 0.96 0.00 0.96 0 0.97 0.08 0.99 1.0 0.055 54.69 124.25 0.189 3.41 0.96 0.48 0.76 1.22 1.0 0.035 1.24 86.34 0.140 7.51 5.46 2 1.600873 59.884 5.7333 69.552
7.874 5607.99 36.6 0.415 36.6 -0.5 -0.20 1.13%Sand-Slime Tailing 0.047 93.3 0.39 0.00 0.39 0 1.59 58.233 809.43 67.63 94 1.15% 2.0 47% 0.96 0.00 0.96 0 0.96 0.08 0.99 1.0 0.055 54.02 121.65 0.183 3.31 0.96 0.47 0.76 1.21 1.0 0.035 1.26 85.43 0.138 7.26 5.29 2 1.58975 58.228 5.5747 67.628
8.038 5607.82 34.6 0.402 34.6 -0.5 -0.22 1.16%Sand-Slime Tailing 0.047 93.3 0.40 0.00 0.40 0 1.59 54.871 762.70 63.72 87 1.18% 2.0 47% 0.97 0.00 0.97 0 0.96 0.08 0.99 1.0 0.055 52.65 116.37 0.172 3.12 0.96 0.46 0.77 1.20 1.0 0.035 1.30 83.14 0.133 6.89 5.01 2 1.58632 54.866 5.2528 63.723
8.202 5607.66 33.4 0.283 33.5 -0.5 -0.20 0.85%Sand-Slime Tailing 0.047 93.3 0.40 0.00 0.40 0 1.58 52.769 733.49 61.28 82 0.86% 1.9 47% 0.98 0.00 0.98 0 0.96 0.08 0.99 1.0 0.055 51.79 113.08 0.166 3.01 0.96 0.45 0.77 1.19 1.0 0.036 1.23 75.08 0.119 6.05 4.53 2 1.577541 52.764 5.0516 61.282
8.366 5607.49 34.9 0.300 34.9 -0.5 -0.22 0.86%Sand-Slime Tailing 0.047 93.3 0.41 0.00 0.41 0 1.55 54.238 753.90 62.99 84 0.87% 1.9 47% 0.99 0.00 0.99 0 0.96 0.08 0.99 1.0 0.055 52.39 115.38 0.170 3.09 0.96 0.46 0.77 1.19 1.0 0.036 1.22 76.88 0.122 6.08 4.59 2 1.553638 54.233 5.1922 62.988
8.530 5607.33 35.7 0.323 35.7 1.0 0.45 0.91%Sand-Slime Tailing 0.047 93.3 0.42 0.00 0.42 0 1.53 54.753 761.06 63.60 84 0.92% 1.9 47% 0.99 0.00 0.99 0 0.96 0.08 0.99 1.0 0.055 52.61 116.21 0.172 3.13 0.96 0.46 0.77 1.18 1.0 0.036 1.23 78.46 0.125 6.11 4.62 2 1.534547 54.763 5.243 63.603
8.694 5607.17 37.7 0.356 37.7 0.3 0.14 0.95%Sand-Slime Tailing 0.047 93.3 0.43 0.00 0.43 0 1.51 56.872 790.53 66.06 87 0.96% 1.9 47% 1.00 0.00 1.00 0 0.96 0.08 0.99 1.0 0.055 53.47 119.53 0.179 3.26 0.96 0.47 0.77 1.18 1.0 0.036 1.23 81.42 0.130 6.25 4.75 2 1.510156 56.876 5.4453 66.057
8.858 5607.00 39.5 0.390 39.5 0.3 0.12 0.99%Sand-Slime Tailing 0.047 93.3 0.43 0.00 0.43 0 1.49 58.703 815.97 68.18 90 1.00% 1.9 47% 1.01 0.00 1.01 0 0.96 0.08 0.99 1.0 0.055 54.21 122.40 0.185 3.38 0.96 0.48 0.76 1.18 1.0 0.036 1.23 84.20 0.136 6.39 4.89 2 1.488026 58.705 5.6204 68.183
9.022 5606.84 40.6 0.422 40.6 0.3 0.12 1.04%Sand-Slime Tailing 0.047 93.3 0.44 0.00 0.44 0 1.47 59.660 829.28 69.29 91 1.05% 2.0 47% 1.02 0.00 1.02 0 0.96 0.08 0.99 1.0 0.055 54.60 123.90 0.188 3.45 0.95 0.48 0.76 1.17 1.0 0.036 1.25 86.34 0.140 6.49 4.97 2 1.469827 59.663 5.7121 69.295
9.186 5606.67 38.9 0.458 38.9 0.2 0.10 1.18%Sand-Slime Tailing 0.047 93.3 0.45 0.00 0.45 0 1.46 57.008 792.41 66.21 86 1.19% 2.0 47% 1.02 0.00 1.02 0 0.96 0.08 0.99 1.0 0.055 53.52 119.74 0.179 3.28 0.95 0.47 0.77 1.17 1.0 0.036 1.31 86.94 0.141 6.44 4.86 2 1.464002 57.01 5.4582 66.214
9.350 5606.51 35.6 0.461 35.6 0.2 0.10 1.30%Sand-Slime Tailing 0.047 93.3 0.46 0.00 0.46 0 1.47 52.127 724.56 60.54 77 1.31% 2.1 47% 1.03 0.00 1.03 0 0.96 0.08 0.99 1.0 0.054 51.54 112.08 0.164 3.01 0.95 0.45 0.78 1.15 1.0 0.036 1.41 85.30 0.138 6.18 4.59 2 1.46588 52.129 4.9908 60.544
9.514 5606.35 32.5 0.457 32.5 -0.1 -0.05 1.41%Sand-Slime Tailing 0.047 93.3 0.46 0.00 0.46 0 1.47 47.683 662.79 55.38 69 1.43% 2.1 47% 1.04 0.00 1.04 0 0.95 0.07 0.99 1.0 0.054 49.72 105.10 0.151 2.78 0.95 0.43 0.79 1.14 1.0 0.037 1.52 84.00 0.135 5.96 4.37 2 1.46671 47.682 4.565 55.379
9.678 5606.18 26.9 0.454 26.9 -0.5 -0.21 1.69%Sand-Slime Tailing 0.047 93.3 0.47 0.00 0.47 0 1.48 39.847 553.87 46.27 56 1.72% 2.3 47% 1.05 0.00 1.05 0 0.95 0.07 0.99 1.0 0.054 46.53 92.81 0.131 2.41 0.95 0.39 0.80 1.13 1.0 0.037 1.81 83.75 0.135 5.85 4.13 2 1.4813 39.843 3.8145 46.275
9.842 5606.02 18.0 0.256 18.0 -0.5 -0.21 1.42%Sand-Slime Tailing 0.047 93.3 0.48 0.00 0.48 0 1.52 27.373 380.49 31.79 37 1.46% 2.4 47% 1.06 0.00 1.06 0 0.95 0.06 0.99 1.0 0.054 41.45 73.24 0.104 1.91 0.95 0.33 0.80 1.12 1.0 0.037 2.15 68.25 0.110 4.69 3.30 2 1.52243 27.369 2.6203 31.787
10.006 5605.85 15.0 0.216 15.1 -0.5 -0.21 1.44%Sand-Slime Tailing 0.047 93.3 0.49 0.00 0.49 0 1.53 23.015 319.91 26.73 30 1.48% 2.4 47% 1.06 0.00 1.06 0 0.95 0.06 0.99 1.0 0.054 39.67 66.40 0.095 1.75 0.95 0.30 0.80 1.12 1.0 0.037 2.45 65.38 0.106 4.46 3.11 2 1.52925 23.011 2.203 26.725
10.170 5605.69 15.7 0.118 15.7 0.9 0.39 0.75%Sand-Slime Tailing 0.047 93.3 0.49 0.00 0.49 0 1.51 23.659 328.86 27.49 31 0.78% 2.3 47% 1.07 0.00 1.07 0 0.95 0.06 0.99 1.0 0.054 39.94 67.43 0.096 1.78 0.95 0.30 0.80 1.12 1.0 0.038 1.86 51.18 0.092 3.84 2.81 2 1.507886 23.667 2.2659 27.488
10.335 5605.53 12.4 0.142 12.4 0.4 0.18 1.15%Sand-Slime Tailing 0.047 93.3 0.50 0.00 0.50 0 1.52 18.795 261.25 21.83 24 1.20% 2.5 47% 1.08 0.00 1.08 0 0.95 0.05 0.99 1.0 0.054 37.96 59.79 0.088 1.62 0.95 0.27 0.80 1.11 1.0 0.038 2.60 56.78 0.097 3.96 2.79 2 1.519415 18.799 1.7998 21.834
10.499 5605.36 10.8 0.099 10.7 4.9 2.13 0.92%Sand-Slime Tailing 0.047 93.3 0.51 0.00 0.51 0 1.51 16.147 224.44 18.81 20 0.97% 2.5 47% 1.09 0.00 1.09 0 0.95 0.05 0.99 1.0 0.054 36.90 55.70 0.083 1.54 0.95 0.25 0.80 1.11 1.0 0.038 2.67 50.18 0.092 3.69 2.62 2 1.506223 16.193 1.5503 18.807
10.663 5605.20 14.4 0.173 14.4 9.8 4.23 1.20%Sand-Slime Tailing 0.047 93.3 0.52 0.00 0.52 0 1.47 21.120 293.57 24.63 27 1.24% 2.4 47% 1.09 0.00 1.09 0 0.95 0.06 0.99 1.0 0.054 38.94 63.57 0.092 1.70 0.95 0.29 0.80 1.11 1.0 0.038 2.43 59.84 0.100 3.97 2.83 2 1.470756 21.21 2.0306 24.634
10.827 5605.03 12.7 0.151 12.7 5.4 2.33 1.19%Sand-Slime Tailing 0.047 93.3 0.53 0.00 0.53 0 1.47 18.646 259.18 21.71 23 1.24% 2.5 47% 1.10 0.00 1.10 0 0.95 0.05 0.99 1.0 0.054 37.92 59.63 0.087 1.62 0.95 0.27 0.80 1.10 1.0 0.038 2.67 57.90 0.098 3.84 2.73 2 1.468221 18.696 1.7899 21.714
10.991 5604.87 19.4 0.189 19.4 5.3 2.31 0.97%Sand-Slime Tailing 0.047 93.3 0.53 0.00 0.53 0 1.41 27.383 380.62 31.86 35 1.00% 2.3 47% 1.11 0.00 1.11 0 0.94 0.06 0.98 1.0 0.054 41.47 73.33 0.104 1.93 0.95 0.33 0.80 1.10 1.0 0.038 1.87 59.57 0.100 3.84 2.89 2 1.410766 27.43 2.6261 31.858
11.155 5604.71 14.8 0.188 14.8 2.4 1.02 1.27%Sand-Slime Tailing 0.047 93.3 0.54 0.00 0.54 0 1.42 21.005 291.97 24.42 26 1.32% 2.4 47% 1.12 0.00 1.12 0 0.94 0.06 0.99 1.0 0.054 38.87 63.29 0.092 1.70 0.95 0.29 0.80 1.10 1.0 0.038 2.53 61.68 0.102 3.87 2.79 2 1.424057 21.026 2.013 24.420
11.319 5604.54 12.2 0.105 12.1 2.4 1.02 0.86%Sand-Slime Tailing 0.047 93.3 0.55 0.00 0.55 0 1.42 17.280 240.19 20.09 21 0.90% 2.4 47% 1.12 0.00 1.12 0 0.94 0.05 0.99 1.0 0.054 37.35 57.44 0.085 1.58 0.95 0.26 0.80 1.09 1.0 0.038 2.51 50.41 0.092 3.45 2.52 2 1.423399 17.301 1.6564 20.094
11.483 5604.38 10.1 0.138 10.1 3.1 1.34 1.37%Sand-Slime Tailing 0.047 93.3 0.56 0.00 0.56 0 1.41 14.151 196.70 16.47 17 1.45% 2.6 47% 1.13 0.00 1.13 0 0.94 0.05 0.99 1.0 0.054 36.08 52.54 0.080 1.49 0.95 0.23 0.80 1.09 1.0 0.038 3.51 57.77 0.098 3.63 2.56 2 1.408057 14.178 1.3574 16.467
11.647 5604.21 14.6 0.228 14.6 2.1 0.91 1.56%Sand-Slime Tailing 0.047 93.3 0.56 0.00 0.56 0 1.38 20.144 280.00 23.42 25 1.63% 2.5 47% 1.14 0.00 1.14 0 0.94 0.05 0.98 1.0 0.053 38.51 61.93 0.090 1.68 0.95 0.28 0.80 1.09 1.0 0.038 2.87 67.29 0.108 3.96 2.82 2 1.383531 20.162 1.9303 23.417
11.811 5604.05 12.5 0.140 12.5 3.1 1.35 1.12%Sand-Slime Tailing 0.059 119.0 0.57 0.00 0.57 1 1.38 17.237 239.60 20.05 21 1.18% 2.5 47% 1.15 0.00 1.15 0 0.94 0.05 0.98 1.0 0.053 37.33 57.39 0.085 1.59 0.95 0.26 0.80 1.09 1.0 0.038 2.80 56.18 0.096 3.50 2.54 2 1.383402 17.264 1.6529 20.051
11.975 5603.89 12.6 0.058 12.6 2.8 1.22 0.46%Sand-Slime Tailing 0.059 119.0 0.58 0.01 0.57 1 1.37 17.307 240.56 20.13 21 0.48% 2.3 47% 1.16 0.00 1.16 0 0.94 0.05 0.98 1.0 0.053 37.36 57.49 0.085 1.60 0.95 0.26 0.80 1.08 1.0 0.039 2.05 41.26 0.084 3.03 2.31 2 1.374638 17.331 1.6593 20.129
Scaling Factor for stress ration, rm
Volumetric Strain Ratio for Site-Specific Design Eart
Equiv. Number of Uniform Strain Cycles, N
Youd et al. (2001)
CSR
M=7.5,
s'v=1atm
0.15
Earthquake Moment Magnitude, M: 5.5
Magnitude Scaling Factor, MSF:
Equil Pore
Pressure at time of
Conditions at t1 Liquefaction Triggering Analyses Idriss & Boulanger (2008)Equil
Pore
Pressure
at t1CN qc1 qc1 qc1N
Normalized Cone
Penetration Resistance, Qt
Normalized Friction
Ratio, Fr (%)
Total Stress
at t1 Liquefiable?
1=Yes
2=No
Cyclic Stress RatioEffective
Stress at
t1
Saturated
at t1
Idriss & Boulanger (2008)
Idriss and Boulanger (2008)
Max. Horiz. Acceleration, Amax/g:
Earthquake Moment Magnitude, M:
Magnitude Scaling Factor, MSF:
WHITE MESA TAILINGS REPOSITORY LIQUEFACTION AND SEISMIC SETTLEMENT ANALYSES - 2W5-C Elev. at
Top of Layer (ft)
Elev. At
Midpoint of Layer (ft)
Bottom
of Layer (ft)
Thickness of Layer (ft)
CSR
M=7.5,
s'v=1atm
Kc
High Compaction Layer
Platform/Random Fill Layer
Pw (u2)Pw (u2)
2013 CPT Data from ConeTec CPT Data Interpretations
fs/qt
Material Type (as determined
by fines
Unit Weight Unit Weight
Total Stress
at time of CPT
Depth
at time of CPT Elevation qt fs qc
Effective Stress at
time of CPT
Saturated
at time of CPT
Type Index, Ic FC
Youd, et al (2001)
Max. Horiz. Acceleration, Amax/g:
Stress at
Bottom of Layer (tsf)
Stress at
Midpoint of Layer (tsf)FINAL COVER
Erosion Protection Layer
Water Storage/Rooting Zone Layer
qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Equil Pore
Pressure at Midpoint of Layer (tsf)
Unit Weight (tcf)
Unit Weight (pcf)
Stress at
Bottom of Layer (tsf)
Stress at
Midpoint of Layer (tsf)
Pressure
at Bottom of Layer (tsf)
Cyclic Resistance Ratio
FoS
Cyclic Stress Ratio
FoS
∆qc1n qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Liquef_SeismicSettle_30Aug2015.xls Page 11 of 36
Energy Fuels Resources (USA) Inc.
White Mesa MillLiquefaction Analyses
Data File: 13-52106_SP2W5-C-BSC-CPT 5604.20 Water surface elevation during CPT investigation (ft5615.86 Ground Surface Elevation at time of CPT (ft amsl)Location: White Mesa 2013 CPT Investigation 0.15 5604.20 Water surface elevation at t0 (ft amsl)5626.28 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl)
..\..\..\6.2.3 Field Data\2013 Field Investigation\Conetec Dat 5.5 5589.01 Water surface elevation at t1 (ft amsl) 0.50 Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after pla ###### 5626.03 5625.78 0.50 0.055 110 0.028 0.014 0.00 0.00 0.028 0.014
Tailings Sands 1.69 5584.01 Water surface elevation at t2 (ft amsl)3.50 Thickness of Water Storage/Rooting Zone (ft) ######5624.03 5622.28 3.50 0.054 107 0.215 0.121 0.00 0.00 0.215 0.121
Tailings Sand-Slimes 4.00 Thickness of High Compaction Layer (ft)###### 5620.28 5618.28 4.00 0.060 120 0.454 0.334 0.00 0.00 0.454 0.334
Tailings Slimes 1.44 2.42 Thickness of Random/Platform Fill on on top of existing interim cover (ft) ###### 5617.07 5615.86 2.42 0.050 101 0.576 0.515 0.00 0.00 0.576 0.515
Interim Cover 0.47 1151.89 Additional Stress due to Final Cover Placement, ΔσFC (psf)
Cells Requiring User Input/Manipulation 2.21 2.21 7.51 5584.01 Elevation of bottom of tailings (liner) (ft amsl)
rd Cσ Kσ Ka rd Dr f Kσ Ka Avg CN qc1 qc1 qc1N
(ft) (ft amsl) TSF TSF TSF (ft) PSI (%) (tcf) (pcf) (tsf)(tsf)(tsf) 1=Yes TSF MPa % (tsf)(tsf)(tsf) 1=Yes FoS TSF MPa
0=No 0=No
Scaling Factor for stress ration, rm
Volumetric Strain Ratio for Site-Specific Design Eart
Equiv. Number of Uniform Strain Cycles, N
Youd et al. (2001)
CSR
M=7.5,
s'v=1atm
0.15
Earthquake Moment Magnitude, M: 5.5
Magnitude Scaling Factor, MSF:
Equil Pore
Pressure at time of
Conditions at t1 Liquefaction Triggering Analyses Idriss & Boulanger (2008)Equil
Pore
Pressure
at t1CN qc1 qc1 qc1N
Normalized Cone
Penetration Resistance, Qt
Normalized Friction
Ratio, Fr (%)
Total Stress
at t1 Liquefiable?
1=Yes
2=No
Cyclic Stress RatioEffective
Stress at
t1
Saturated
at t1
Idriss & Boulanger (2008)
Idriss and Boulanger (2008)
Max. Horiz. Acceleration, Amax/g:
Earthquake Moment Magnitude, M:
Magnitude Scaling Factor, MSF:
WHITE MESA TAILINGS REPOSITORY LIQUEFACTION AND SEISMIC SETTLEMENT ANALYSES - 2W5-C Elev. at
Top of Layer (ft)
Elev. At
Midpoint of Layer (ft)
Bottom
of Layer (ft)
Thickness of Layer (ft)
CSR
M=7.5,
s'v=1atm
Kc
High Compaction Layer
Platform/Random Fill Layer
Pw (u2)Pw (u2)
2013 CPT Data from ConeTec CPT Data Interpretations
fs/qt
Material Type (as determined
by fines
Unit Weight Unit Weight
Total Stress
at time of CPT
Depth
at time of CPT Elevation qt fs qc
Effective Stress at
time of CPT
Saturated
at time of CPT
Type Index, Ic FC
Youd, et al (2001)
Max. Horiz. Acceleration, Amax/g:
Stress at
Bottom of Layer (tsf)
Stress at
Midpoint of Layer (tsf)FINAL COVER
Erosion Protection Layer
Water Storage/Rooting Zone Layer
qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Equil Pore
Pressure at Midpoint of Layer (tsf)
Unit Weight (tcf)
Unit Weight (pcf)
Stress at
Bottom of Layer (tsf)
Stress at
Midpoint of Layer (tsf)
Pressure
at Bottom of Layer (tsf)
Cyclic Resistance Ratio
FoS
Cyclic Stress Ratio
FoS
∆qc1n qc1n-cs
(CRR)
M=7.5,
s'v=1atm
12.139 5603.72 13.5 0.096 13.4 5.0 2.18 0.71%Sand-Slime Tailing 0.059 119.0 0.59 0.01 0.58 1 1.36 18.315 254.58 21.32 22 0.75% 2.4 47% 1.17 0.00 1.17 0 0.94 0.05 0.98 1.0 0.053 37.78 59.10 0.087 1.63 0.95 0.27 0.80 1.08 1.0 0.039 2.26 48.23 0.090 3.22 2.42 2 1.364781 18.358 1.7576 21.322
12.303 5603.56 11.6 0.118 11.5 11.0 4.78 1.02%Sand-Slime Tailing 0.059 119.0 0.60 0.02 0.58 1 1.36 15.638 217.37 18.27 19 1.07% 2.5 47% 1.18 0.00 1.18 0 0.94 0.05 0.98 1.0 0.053 36.71 54.98 0.082 1.55 0.95 0.25 0.80 1.08 1.0 0.039 2.90 53.04 0.094 3.32 2.44 2 1.357485 15.732 1.5061 18.271
12.467 5603.39 11.3 0.166 11.2 12.8 5.56 1.47%Sand-Slime Tailing 0.059 119.0 0.61 0.03 0.59 1 1.35 15.110 210.03 17.67 18 1.56% 2.6 47% 1.19 0.00 1.19 0 0.93 0.05 0.98 1.0 0.053 36.50 54.18 0.082 1.54 0.95 0.24 0.80 1.08 1.0 0.039 3.47 61.35 0.101 3.57 2.55 2 1.34909 15.218 1.457 17.675
12.631 5603.23 11.0 0.151 10.9 12.5 5.42 1.38%Sand-Slime Tailing 0.059 119.0 0.62 0.03 0.59 1 1.34 14.588 202.77 17.06 17 1.46% 2.6 47% 1.20 0.00 1.20 0 0.93 0.05 0.98 1.0 0.053 36.29 53.35 0.081 1.52 0.95 0.24 0.80 1.08 1.0 0.039 3.47 59.22 0.099 3.46 2.49 2 1.340812 14.693 1.4067 17.065
12.795 5603.06 18.2 0.083 18.2 2.6 1.13 0.46%Sand-Slime Tailing 0.059 119.0 0.63 0.04 0.60 1 1.31 23.841 331.39 27.71 29 0.47% 2.2 47% 1.21 0.00 1.21 0 0.93 0.06 0.98 1.0 0.053 40.02 67.74 0.097 1.83 0.95 0.30 0.80 1.08 1.0 0.039 1.65 45.66 0.088 3.05 2.44 2 1.312115 23.862 2.2846 27.715
12.959 5602.90 20.3 0.069 20.3 0.7 0.29 0.34%Sand-Slime Tailing 0.059 119.0 0.64 0.04 0.60 1 1.30 26.297 365.53 30.55 33 0.35% 2.1 47% 1.22 0.00 1.22 0 0.93 0.06 0.98 1.0 0.053 41.02 71.56 0.102 1.93 0.95 0.32 0.80 1.07 1.0 0.039 1.46 44.47 0.087 2.99 2.46 2 1.297327 26.302 2.5182 30.548
13.123 5602.74 21.3 0.128 21.3 -0.0 -0.01 0.60%Sand-Slime Tailing 0.059 119.0 0.65 0.05 0.61 1 1.29 27.402 380.89 31.83 34 0.62% 2.2 47% 1.23 0.00 1.23 0 0.93 0.06 0.98 1.0 0.053 41.46 73.29 0.104 1.97 0.95 0.33 0.80 1.07 1.0 0.039 1.63 51.99 0.093 3.18 2.57 2 1.287096 27.402 2.6235 31.826
13.287 5602.57 22.1 0.250 22.1 2.2 0.94 1.13%Sand-Slime Tailing 0.059 119.0 0.66 0.05 0.61 1 1.28 28.264 392.88 32.85 35 1.16% 2.3 47% 1.24 0.00 1.24 0 0.93 0.06 0.98 1.0 0.052 41.82 74.67 0.106 2.01 0.94 0.33 0.80 1.07 1.0 0.039 1.99 65.50 0.106 3.60 2.80 2 1.277779 28.282 2.7077 32.848
13.451 5602.41 17.9 0.288 17.9 3.9 1.69 1.61%Sand-Slime Tailing 0.059 119.0 0.67 0.06 0.61 1 1.29 22.955 319.07 26.70 28 1.67% 2.5 47% 1.25 0.00 1.25 0 0.93 0.06 0.98 1.0 0.052 39.66 66.36 0.095 1.81 0.94 0.30 0.80 1.07 1.0 0.039 2.69 71.93 0.115 3.85 2.83 2 1.285254 22.986 2.2007 26.697
13.615 5602.24 16.1 0.193 16.1 8.8 3.83 1.20%Sand-Slime Tailing 0.059 119.0 0.68 0.06 0.62 1 1.28 20.647 287.00 24.06 25 1.25% 2.5 47% 1.26 0.00 1.26 0 0.93 0.06 0.98 1.0 0.052 38.74 62.80 0.091 1.74 0.94 0.28 0.80 1.07 1.0 0.039 2.56 61.51 0.102 3.39 2.57 2 1.284834 20.718 1.9836 24.063
13.779 5602.08 19.4 0.123 19.3 9.7 4.21 0.63%Sand-Slime Tailing 0.059 119.0 0.69 0.07 0.62 1 1.27 24.473 340.18 28.51 30 0.66% 2.2 47% 1.27 0.00 1.27 0 0.92 0.06 0.98 1.0 0.052 40.30 68.82 0.098 1.88 0.94 0.31 0.80 1.07 1.0 0.039 1.79 51.10 0.092 3.06 2.47 2 1.266741 24.55 2.3504 28.514
13.943 5601.92 25.1 0.130 25.1 8.8 3.83 0.52%Sand-Slime Tailing 0.059 119.0 0.70 0.07 0.63 1 1.24 31.169 433.25 36.28 39 0.53% 2.1 47% 1.28 0.00 1.28 0 0.92 0.06 0.98 1.0 0.052 43.03 79.31 0.112 2.15 0.94 0.35 0.80 1.06 1.0 0.039 1.47 53.16 0.094 3.09 2.62 2 1.244282 31.238 2.9907 36.281
14.107 5601.75 25.6 0.219 25.6 8.3 3.58 0.85%Sand-Slime Tailing 0.059 119.0 0.71 0.08 0.63 1 1.24 31.630 439.66 36.81 39 0.88% 2.2 47% 1.29 0.00 1.29 0 0.92 0.06 0.97 1.0 0.052 43.21 80.02 0.113 2.17 0.94 0.35 0.80 1.06 1.0 0.039 1.68 62.01 0.102 3.34 2.75 2 1.237001 31.694 3.0344 36.811
14.271 5601.59 25.3 0.206 25.3 14.8 6.43 0.81%Sand-Slime Tailing 0.059 119.0 0.72 0.08 0.64 1 1.23 31.101 432.30 36.25 39 0.84% 2.2 47% 1.30 0.00 1.30 0 0.92 0.06 0.97 1.0 0.052 43.02 79.27 0.112 2.15 0.94 0.35 0.80 1.06 1.0 0.039 1.67 60.69 0.101 3.27 2.71 2 1.231716 31.215 2.9885 36.254
14.436 5601.42 28.0 0.355 27.9 15.7 6.79 1.27%Sand-Slime Tailing 0.059 119.0 0.73 0.09 0.64 1 1.22 33.991 472.48 39.62 42 1.30% 2.3 47% 1.31 0.00 1.31 0 0.92 0.06 0.97 1.0 0.052 44.20 83.81 0.118 2.28 0.94 0.36 0.80 1.06 1.0 0.039 1.87 74.22 0.118 3.81 3.04 2 1.22008 34.111 3.2658 39.618
14.600 5601.26 21.9 0.337 21.8 19.3 8.38 1.54%Sand-Slime Tailing 0.059 119.0 0.74 0.09 0.65 1 1.23 26.771 372.11 31.26 33 1.59% 2.4 47% 1.32 0.00 1.32 0 0.92 0.06 0.97 1.0 0.052 41.27 72.53 0.103 1.99 0.94 0.32 0.80 1.06 1.0 0.039 2.38 74.56 0.119 3.80 2.89 2 1.228005 26.919 2.5772 31.265
14.764 5601.10 27.4 0.402 27.2 33.6 14.56 1.47%Sand-Slime Tailing 0.059 119.0 0.75 0.10 0.65 1 1.21 32.863 456.79 38.46 41 1.51% 2.3 47% 1.32 0.00 1.32 0 0.92 0.06 0.97 1.0 0.052 43.79 82.25 0.116 2.25 0.94 0.36 0.80 1.06 1.0 0.039 2.04 78.35 0.125 3.97 3.11 2 1.20996 33.116 3.1706 38.463
14.928 5600.93 49.6 0.629 49.5 20.9 9.05 1.27%Sand Tailings 0.062 123.5 0.76 0.10 0.66 1 1.17 57.889 804.66 67.41 74 1.29% 2.1 18% 1.33 0.00 1.33 0 0.92 0.08 0.96 1.0 0.051 39.32 106.73 0.154 3.02 0.94 0.47 0.76 1.07 1.0 0.039 1.42 95.65 0.161 5.10 4.06 2 1.170186 58.042 5.5569 67.412
15.092 5600.77 29.2 0.705 29.1 11.9 5.15 2.41%Sand-Slime Tailing 0.059 119.0 0.77 0.11 0.66 1 1.19 34.821 484.01 40.55 43 2.48% 2.4 47% 1.34 0.00 1.34 0 0.91 0.07 0.97 1.0 0.051 44.52 85.07 0.120 2.33 0.94 0.37 0.80 1.05 1.0 0.039 2.51 101.61 0.178 5.57 3.95 2 1.194955 34.91 3.3422 40.545
15.256 5600.60 26.1 0.521 26.1 10.3 4.48 1.99%Sand-Slime Tailing 0.059 119.0 0.78 0.11 0.67 1 1.20 31.170 433.26 36.29 38 2.05% 2.4 47% 1.35 0.00 1.35 0 0.91 0.06 0.97 1.0 0.051 43.03 79.32 0.112 2.18 0.94 0.35 0.80 1.05 1.0 0.039 2.45 88.96 0.145 4.54 3.36 2 1.195155 31.247 2.9916 36.291
15.420 5600.44 21.1 0.398 21.0 25.4 11.00 1.88%Sand-Slime Tailing 0.059 119.0 0.79 0.12 0.67 1 1.20 25.169 349.85 29.45 30 1.96% 2.5 47% 1.36 0.00 1.36 0 0.91 0.06 0.97 1.0 0.051 40.63 70.08 0.100 1.94 0.94 0.31 0.80 1.05 1.0 0.039 2.75 81.14 0.130 4.02 2.98 2 1.19967 25.359 2.4279 29.453
15.584 5600.28 18.2 0.232 17.9 47.5 20.56 1.28%Sand-Slime Tailing 0.059 119.0 0.80 0.12 0.68 1 1.20 21.442 298.05 25.32 26 1.34% 2.5 47% 1.37 0.00 1.37 0 0.91 0.06 0.97 1.0 0.051 39.18 64.50 0.093 1.81 0.94 0.29 0.80 1.05 1.0 0.039 2.58 65.28 0.106 3.26 2.54 2 1.200568 21.798 2.0869 25.317
15.748 5600.11 17.7 0.358 17.4 55.7 24.12 2.02%Sand-Slime Tailing 0.059 119.0 0.81 0.13 0.68 1 1.20 20.745 288.36 24.58 25 2.12% 2.6 47% 1.38 0.00 1.38 0 0.91 0.06 0.97 1.0 0.051 38.92 63.50 0.092 1.79 0.94 0.29 0.80 1.05 1.0 0.039 3.25 79.94 0.128 3.90 2.85 2 1.195675 21.16 2.0259 24.577
15.912 5599.95 15.1 0.207 14.6 74.8 32.40 1.37%Sand-Slime Tailing 0.059 119.0 0.82 0.13 0.68 1 1.20 17.473 242.88 20.94 21 1.45% 2.6 47% 1.39 0.00 1.39 0 0.91 0.05 0.97 1.0 0.051 37.65 58.59 0.086 1.69 0.94 0.26 0.80 1.05 1.0 0.040 3.07 64.37 0.105 3.18 2.44 2 1.195967 18.031 1.7263 20.942
16.076 5599.78 20.3 0.257 19.8 68.4 29.65 1.27%Sand-Slime Tailing 0.059 119.0 0.83 0.14 0.69 1 1.18 23.370 324.85 27.73 28 1.32% 2.4 47% 1.40 0.00 1.40 0 0.91 0.06 0.97 1.0 0.051 40.03 67.75 0.097 1.90 0.94 0.30 0.80 1.05 1.0 0.040 2.42 67.01 0.108 3.26 2.58 2 1.178531 23.874 2.2857 27.728
16.240 5599.62 21.4 0.347 21.2 43.6 18.89 1.62%Sand-Slime Tailing 0.059 119.0 0.84 0.14 0.69 1 1.17 24.772 344.33 29.14 30 1.68% 2.5 47% 1.41 0.00 1.41 0 0.91 0.06 0.97 1.0 0.051 40.52 69.66 0.099 1.95 0.94 0.31 0.80 1.04 1.0 0.040 2.60 75.89 0.121 3.62 2.78 2 1.170704 25.091 2.4022 29.141
16.404 5599.46 16.6 0.322 16.3 49.4 21.39 1.94%Sand-Slime Tailing 0.059 119.0 0.85 0.15 0.70 1 1.17 19.179 266.59 22.70 23 2.04% 2.6 47% 1.42 0.00 1.42 0 0.90 0.05 0.97 1.0 0.051 38.26 60.96 0.089 1.75 0.94 0.28 0.80 1.04 1.0 0.040 3.39 77.02 0.122 3.65 2.70 2 1.174472 19.541 1.8709 22.696
16.568 5599.29 13.3 0.286 12.8 72.0 31.18 2.16%Sand-Slime Tailing 0.059 119.0 0.86 0.15 0.70 1 1.17 15.003 208.55 18.04 18 2.31% 2.7 47% 1.43 0.00 1.43 0 0.90 0.05 0.97 1.0 0.051 36.63 54.66 0.082 1.62 0.94 0.25 0.80 1.04 1.0 0.040 4.22 76.04 0.121 3.58 2.60 2 1.171225 15.529 1.4868 18.037
16.732 5599.13 10.2 0.232 9.8 68.1 29.53 2.28%Slime Tailings 0.057 113.1 0.87 0.16 0.71 1 1.17 11.379 158.16 13.79 13 2.49% 2.9 71% 1.44 0.00 1.44 0 0.90 0.05 0.98 1.0 0.051 34.89 48.68 0.076 1.50 0.94 0.21 0.80 1.04 1.0 0.040 5.25 72.36 0.115 3.40 2.45 2 1.165837 11.874 1.1369 13.792
16.896 5598.96 9.5 0.302 9.0 80.2 34.74 3.18%Slime Tailings 0.057 113.1 0.88 0.16 0.71 1 1.16 10.433 145.02 12.79 12 3.51% 3.0 71% 1.45 0.00 1.45 0 0.90 0.05 0.98 1.0 0.051 34.54 47.33 0.075 1.48 0.94 0.21 0.80 1.04 1.0 0.040 6.40 81.87 0.131 3.84 2.66 2 1.160506 11.014 1.0545 12.792
17.060 5598.80 16.7 0.143 16.2 83.4 36.16 0.86%Sand-Slime Tailing 0.059 119.0 0.88 0.17 0.72 1 1.15 18.672 259.55 22.38 22 0.90% 2.4 47% 1.46 0.00 1.46 0 0.90 0.05 0.97 1.0 0.051 38.15 60.54 0.088 1.75 0.94 0.27 0.80 1.04 1.0 0.040 2.43 54.50 0.095 2.77 2.26 2 1.15262 19.273 1.8452 22.384
17.224 5598.64 29.8 0.265 29.6 24.9 10.78 0.89%Sand-Slime Tailing 0.059 119.0 0.89 0.17 0.72 1 1.13 33.458 465.06 39.06 40 0.92% 2.2 47% 1.47 0.00 1.47 0 0.90 0.06 0.97 1.0 0.050 44.00 83.06 0.117 2.33 0.94 0.36 0.80 1.04 1.0 0.040 1.69 66.07 0.107 3.09 2.71 2 1.1288 33.633 3.22 39.063
17.388 5598.47 19.1 0.394 19.0 18.5 8.03 2.06%Sand-Slime Tailing 0.059 119.0 0.90 0.18 0.73 1 1.14 21.615 300.45 25.26 25 2.16% 2.6 47% 1.48 0.00 1.48 0 0.90 0.06 0.97 1.0 0.050 39.16 64.42 0.093 1.85 0.94 0.29 0.80 1.03 1.0 0.040 3.26 82.40 0.132 3.80 2.82 2 1.137647 21.747 2.0821 25.258
17.552 5598.31 15.7 0.311 15.6 23.1 10.01 1.98%Sand-Slime Tailing 0.059 119.0 0.91 0.18 0.73 1 1.14 17.686 245.84 20.73 20 2.10% 2.7 47% 1.49 0.00 1.49 0 0.90 0.05 0.97 1.0 0.050 37.57 58.30 0.086 1.71 0.93 0.26 0.80 1.03 1.0 0.040 3.70 76.68 0.122 3.49 2.60 2 1.137384 17.85 1.709 20.732
17.716 5598.14 13.9 0.260 13.8 26.1 11.33 1.86%Sand-Slime Tailing 0.059 119.0 0.92 0.19 0.73 1 1.13 15.596 216.78 18.33 18 2.00% 2.7 47% 1.50 0.00 1.50 0 0.89 0.05 0.97 1.0 0.050 36.73 55.06 0.083 1.64 0.93 0.25 0.80 1.03 1.0 0.040 3.94 72.19 0.115 3.27 2.46 2 1.131767 15.78 1.5108 18.328
17.880 5597.98 18.8 0.179 18.5 52.4 22.70 0.95%Sand-Slime Tailing 0.059 119.0 0.93 0.19 0.74 1 1.12 20.761 288.58 24.54 24 1.00% 2.4 47% 1.51 0.00 1.51 0 0.89 0.06 0.97 1.0 0.050 38.91 63.45 0.092 1.83 0.93 0.29 0.80 1.03 1.0 0.040 2.38 58.47 0.099 2.79 2.31 2 1.122221 21.128 2.0228 24.539
18.044 5597.82 39.1 0.438 39.0 24.3 10.53 1.12%Sand-Slime Tailing 0.059 119.0 0.94 0.20 0.74 1 1.10 42.754 594.28 49.85 51 1.15% 2.2 47% 1.52 0.00 1.52 0 0.89 0.07 0.96 1.0 0.049 47.78 97.63 0.139 2.80 0.93 0.41 0.80 1.03 1.0 0.040 1.61 80.28 0.128 3.60 3.20 2 1.09766 42.92 4.1092 49.849
18.208 5597.65 18.6 0.428 18.6 11.8 5.10 2.30%Sand-Slime Tailing 0.059 119.0 0.95 0.20 0.75 1 1.11 20.630 286.76 24.06 24 2.42% 2.6 47% 1.53 0.00 1.53 0 0.89 0.06 0.97 1.0 0.050 38.74 62.79 0.091 1.83 0.93 0.28 0.80 1.03 1.0 0.040 3.58 86.19 0.140 3.90 2.86 2 1.112129 20.712 1.9829 24.055
18.372 5597.49 12.8 0.269 12.7 14.8 6.43 2.10%Sand-Slime Tailing 0.059 119.0 0.96 0.21 0.75 1 1.11 14.096 195.93 16.49 16 2.27% 2.8 47% 1.54 0.00 1.54 0 0.89 0.05 0.97 1.0 0.050 36.09 52.58 0.080 1.60 0.93 0.23 0.80 1.03 1.0 0.040 4.51 74.42 0.118 3.29 2.45 2 1.109913 14.199 1.3594 16.491
18.537 5597.32 17.7 0.255 17.5 38.1 16.51 1.44%Sand-Slime Tailing 0.059 119.0 0.97 0.21 0.76 1 1.10 19.280 267.99 22.70 22 1.52% 2.5 47% 1.55 0.00 1.55 0 0.89 0.05 0.97 1.0 0.050 38.26 60.96 0.089 1.79 0.93 0.28 0.80 1.03 1.0 0.040 3.02 68.48 0.110 3.03 2.41 2 1.10298 19.542 1.871 22.697
18.701 5597.16 15.7 0.298 15.5 35.1 15.21 1.90%Sand-Slime Tailing 0.059 119.0 0.98 0.22 0.76 1 1.10 17.040 236.85 20.07 19 2.02% 2.7 47% 1.56 0.00 1.56 0 0.89 0.05 0.97 1.0 0.050 37.34 57.41 0.085 1.71 0.93 0.26 0.80 1.02 1.0 0.040 3.74 75.13 0.119 3.28 2.50 2 1.099343 17.281 1.6545 20.071
18.865 5597.00 16.1 0.307 15.8 50.1 21.72 1.90%Sand-Slime Tailing 0.059 119.0 0.99 0.22 0.77 1 1.09 17.309 240.60 20.50 20 2.03% 2.7 47% 1.57 0.00 1.57 0 0.89 0.05 0.97 1.0 0.050 37.49 57.99 0.086 1.73 0.93 0.26 0.80 1.02 1.0 0.040 3.70 75.79 0.120 3.29 2.51 2 1.094143 17.652 1.69 20.501
19.029 5596.83 26.6 0.234 26.5 23.1 10.00 0.88%Sand-Slime Tailing 0.059 119.0 1.00 0.23 0.77 1 1.08 28.588 397.38 33.38 33 0.91% 2.3 47% 1.58 0.00 1.58 0 0.88 0.06 0.96 1.0 0.049 42.01 75.39 0.106 2.16 0.93 0.33 0.80 1.02 1.0 0.040 1.88 62.88 0.103 2.80 2.48 2 1.080432 28.744 2.7519 33.384
19.193 5596.67 29.7 0.205 29.7 9.5 4.12 0.69%Sand-Slime Tailing 0.059 119.0 1.01 0.24 0.78 1 1.07 31.852 442.74 37.07 37 0.71% 2.2 47% 1.59 0.00 1.59 0 0.88 0.06 0.96 1.0 0.049 43.30 80.37 0.113 2.31 0.93 0.35 0.80 1.02 1.0 0.040 1.63 60.40 0.100 2.71 2.51 2 1.073899 31.916 3.0556 37.068
19.357 5596.50 31.2 0.166 31.2 6.0 2.60 0.53%Sand-Slime Tailing 0.059 119.0 1.02 0.24 0.78 1 1.07 33.332 463.32 38.76 39 0.55% 2.1 47% 1.60 0.00 1.60 0 0.88 0.06 0.96 1.0 0.049 43.90 82.66 0.116 2.38 0.93 0.36 0.80 1.02 1.0 0.040 1.48 57.35 0.098 2.62 2.50 2 1.068688 33.372 3.1951 38.760
19.521 5596.34 30.6 0.174 30.6 5.8 2.51 0.57%Sand-Slime Tailing 0.059 119.0 1.03 0.25 0.79 1 1.06 32.529 452.15 37.83 38 0.59% 2.1 47% 1.61 0.00 1.61 0 0.88 0.06 0.96 1.0 0.049 43.57 81.39 0.115 2.34 0.93 0.36 0.80 1.02 1.0 0.040 1.53 57.77 0.098 2.62 2.48 2 1.064776 32.567 3.118 37.825
19.685 5596.18 30.2 0.251 30.2 5.6 2.43 0.83%Sand-Slime Tailing 0.059 119.0 1.04 0.25 0.79 1 1.06 32.002 444.83 37.21 37 0.86% 2.2 47% 1.62 0.00 1.62 0 0.88 0.06 0.96 1.0 0.049 43.35 80.56 0.113 2.32 0.93 0.35 0.80 1.02 1.0 0.040 1.73 64.49 0.105 2.79 2.56 2 1.060724 32.039 3.0674 37.212
19.849 5596.01 25.2 0.236 25.2 6.5 2.83 0.93%Sand-Slime Tailing 0.059 119.0 1.05 0.26 0.80 1 1.06 26.686 370.94 31.04 30 0.98% 2.3 47% 1.63 0.00 1.63 0 0.88 0.06 0.96 1.0 0.049 41.19 72.23 0.102 2.10 0.93 0.32 0.80 1.02 1.0 0.040 2.03 63.17 0.103 2.74 2.42 2 1.058982 26.73 2.5591 31.045
20.013 5595.85 19.0 0.220 19.0 7.3 3.16 1.16%Sand-Slime Tailing 0.059 119.0 1.06 0.26 0.80 1 1.06 20.060 278.83 23.35 22 1.23% 2.5 47% 1.64 0.00 1.64 0 0.88 0.05 0.96 1.0 0.049 38.49 61.85 0.090 1.84 0.93 0.28 0.80 1.01 1.0 0.040 2.72 63.54 0.104 2.74 2.29 2 1.05802 20.108 1.9252 23.355
20.177 5595.68 29.6 0.210 29.5 8.7 3.79 0.71%Sand-Slime Tailing 0.059 119.0 1.07 0.27 0.80 1 1.05 30.959 430.33 36.02 35 0.74% 2.2 47% 1.65 0.00 1.65 0 0.87 0.06 0.96 1.0 0.049 42.94 78.96 0.111 2.29 0.93 0.35 0.80 1.01 1.0 0.040 1.68 60.65 0.101 2.64 2.47 2 1.048399 31.016 2.9695 36.024
20.341 5595.52 30.3 0.241 30.2 8.7 3.77 0.80%Sand-Slime Tailing 0.059 119.0 1.08 0.27 0.81 1 1.04 31.560 438.68 36.72 36 0.83% 2.2 47% 1.66 0.00 1.66 0 0.87 0.06 0.96 1.0 0.048 43.18 79.90 0.112 2.32 0.92 0.35 0.80 1.01 1.0 0.040 1.73 63.52 0.104 2.71 2.52 2 1.043997 31.617 3.027 36.721
20.505 5595.36 30.4 0.302 30.3 9.5 4.11 0.99%Sand-Slime Tailing 0.059 119.0 1.09 0.28 0.81 1 1.04 31.508 437.97 36.67 36 1.03% 2.3 47% 1.67 0.00 1.67 0 0.87 0.06 0.96 1.0 0.048 43.16 79.83 0.112 2.33 0.92 0.35 0.80 1.01 1.0 0.040 1.88 68.85 0.110 2.87 2.60 2 1.039881 31.57 3.0225 36.667
20.669 5595.19 31.3 0.368 31.3 10.8 4.68 1.17%Sand-Slime Tailing 0.059 119.0 1.10 0.28 0.82 1 1.04 32.371 449.96 37.68 37 1.22% 2.3 47% 1.68 0.00 1.68 0 0.87 0.06 0.96 1.0 0.048 43.52 81.19 0.114 2.37 0.92 0.35 0.80 1.01 1.0 0.040 1.97 74.32 0.118 3.06 2.72 2 1.035544 32.441 3.1059 37.678
20.833 5595.03 30.5 0.484 30.4 10.9 4.74 1.59%Sand-Slime Tailing 0.059 119.0 1.11 0.29 0.82 1 1.03 31.396 436.41 36.55 36 1.65% 2.4 47% 1.69 0.00 1.69 0 0.87 0.06 0.96 1.0 0.048 43.12 79.67 0.112 2.33 0.92 0.35 0.80 1.01 1.0 0.040 2.30 83.89 0.135 3.48 2.90 2 1.031761 31.467 3.0126 36.547
20.997 5594.86 26.1 0.582 26.0 10.9 4.74 2.23%Sand-Slime Tailing 0.059 119.0 1.12 0.29 0.83 1 1.03 26.780 372.24 31.18 30 2.33% 2.5 47% 1.69 0.00 1.69 0 0.87 0.06 0.96 1.0 0.048 41.24 72.42 0.103 2.13 0.92 0.32 0.80 1.01 1.0 0.040 3.01 93.89 0.157 4.03 3.08 2 1.028813 26.85 2.5706 31.185
21.161 5594.70 20.1 0.593 20.1 11.7 5.06 2.95%Slime Tailings 0.057 113.1 1.13 0.30 0.83 1 1.03 20.583 286.10 23.99 23 3.12% 2.7 71% 1.70 0.00 1.70 0 0.87 0.06 0.96 1.0 0.048 38.44 62.44 0.091 1.88 0.92 0.28 0.80 1.01 1.0 0.040 4.14 99.39 0.171 4.39 3.13 2 1.02656 20.657 1.9777 23.992
21.325 5594.53 18.4 0.531 18.3 20.6 8.93 2.89%Slime Tailings 0.057 113.1 1.14 0.30 0.84 1 1.02 18.692 259.82 21.86 21 3.08% 2.7 71% 1.71 0.00 1.71 0 0.87 0.05 0.96 1.0 0.048 37.70 59.56 0.087 1.81 0.92 0.27 0.80 1.01 1.0 0.040 4.37 95.63 0.161 4.12 2.96 2 1.023086 18.823 1.8021 21.862
21.489 5594.37 17.0 0.447 16.8 29.0 12.56 2.63%Slime Tailings 0.057 113.1 1.15 0.31 0.84 1 1.02 17.124 238.03 20.10 19 2.82% 2.8 71% 1.72 0.00 1.72 0 0.86 0.05 0.96 1.0 0.048 37.09 57.19 0.085 1.76 0.91 0.26 0.80 1.00 1.0 0.040 4.44 89.28 0.146 3.72 2.74 2 1.019302 17.309 1.6571 20.103
21.653 5594.21 14.2 0.424 14.0 29.7 12.89 2.99%Slime Tailings 0.057 113.1 1.16 0.31 0.84 1 1.02 14.215 197.59 16.73 15 3.25% 2.9 71% 1.73 0.00 1.73 0 0.86 0.05 0.96 1.0 0.048 35.91 52.64 0.080 1.66 0.91 0.24 0.80 1.00 1.0 0.040 5.36 89.70 0.147 3.73 2.70 2 1.015373 14.404 1.379 16.729
21.817 5594.04 16.9 0.422 16.5 68.7 29.77 2.50%Slime Tailings 0.057 113.1 1.17 0.32 0.85 1 1.01 16.669 231.70 19.86 19 2.68% 2.8 71% 1.74 0.00 1.74 0 0.86 0.05 0.96 1.0 0.048 37.01 56.87 0.084 1.76 0.91 0.26 0.80 1.00 1.0 0.040 4.38 86.93 0.141 3.56 2.66 2 1.011479 17.103 1.6374 19.864
21.981 5593.88 21.8 0.335 21.7 23.7 10.26 1.54%Sand-Slime Tailing 0.059 119.0 1.18 0.32 0.85 1 1.01 21.800 303.01 25.49 24 1.62% 2.5 47% 1.75 0.00 1.75 0 0.86 0.06 0.96 1.0 0.048 39.24 64.73 0.093 1.95 0.91 0.29 0.80 1.00 1.0 0.040 2.93 74.56 0.119 2.98 2.47 2 1.006907 21.948 2.1013 25.492
22.145 5593.71 21.8 0.428 21.7 22.3 9.65 1.96%Sand-Slime Tailing 0.059 119.0 1.18 0.33 0.86 1 1.00 21.771 302.62 25.45 24 2.07% 2.6 47% 1.76 0.00 1.76 0 0.86 0.06 0.96 1.0 0.048 39.23 64.67 0.093 1.95 0.91 0.29 0.80 1.00 1.0 0.040 3.28 83.48 0.134 3.36 2.66 2 1.002806 21.91 2.0977 25.448
22.309 5593.55 17.7 0.439 17.6 19.7 8.53 2.48%Sand-Slime Tailing 0.059 119.0 1.19 0.33 0.86 1 1.00 17.547 243.90 20.52 19 2.66% 2.7 47% 1.77 0.00 1.77 0 0.86 0.05 0.96 1.0 0.048 37.50 58.02 0.086 1.80 0.91 0.26 0.80 1.00 1.0 0.040 4.28 87.80 0.143 3.57 2.68 2 0.998694 17.67 1.6917 20.522
22.473 5593.39 16.8 0.471 16.6 34.2 14.81 2.80%Slime Tailings 0.057 113.1 1.20 0.34 0.87 1 0.99 16.546 229.99 19.46 18 3.01% 2.8 71% 1.78 0.00 1.78 0 0.86 0.05 0.96 1.0 0.048 36.87 56.33 0.084 1.76 0.91 0.25 0.80 1.00 1.0 0.040 4.70 91.53 0.151 3.76 2.76 2 0.994943 16.758 1.6044 19.464
22.638 5593.22 19.3 0.376 19.1 34.2 14.81 1.95%Sand-Slime Tailing 0.059 119.0 1.21 0.34 0.87 1 0.99 18.876 262.38 22.17 21 2.08% 2.6 47% 1.79 0.00 1.79 0 0.85 0.05 0.96 1.0 0.047 38.08 60.25 0.088 1.86 0.90 0.27 0.80 1.00 1.0 0.040 3.63 80.39 0.128 3.18 2.52 2 0.990892 19.088 1.8275 22.169
22.802 5593.06 15.1 0.327 14.7 65.1 28.22 2.17%Sand-Slime Tailing 0.059 119.0 1.22 0.35 0.88 1 0.99 14.455 200.93 17.25 16 2.36% 2.8 47% 1.80 0.00 1.80 0 0.85 0.05 0.96 1.0 0.047 36.35 53.61 0.081 1.71 0.90 0.24 0.80 1.00 1.0 0.040 4.57 78.92 0.126 3.10 2.40 2 0.986693 14.856 1.4223 17.255
22.966 5592.89 12.6 0.218 11.9 111.5 48.31 1.73%Sand-Slime Tailing 0.059 119.0 1.23 0.35 0.88 1 0.98 11.703 162.67 14.39 13 1.92% 2.8 47% 1.81 0.00 1.81 0 0.85 0.05 0.96 1.0 0.047 35.35 49.73 0.077 1.63 0.90 0.22 0.80 1.00 1.0 0.040 4.76 68.44 0.110 2.70 2.16 2 0.982626 12.387 1.1859 14.387
23.130 5592.73 12.0 0.226 11.4 106.7 46.22 1.88%Sand-Slime Tailing 0.059 119.0 1.24 0.36 0.89 1 0.98 11.107 154.39 13.66 12 2.10% 2.8 47% 1.82 0.00 1.82 0 0.85 0.05 0.96 1.0 0.047 35.09 48.75 0.076 1.61 0.90 0.21 0.80 0.99 1.0 0.040 5.13 70.08 0.112 2.74 2.18 2 0.978597 11.759 1.1258 13.657
23.294 5592.57 14.5 0.334 13.6 154.3 66.85 2.30%Sand-Slime Tailing 0.059 119.0 1.25 0.36 0.89 1 0.97 13.235 183.97 16.46 15 2.51% 2.8 47% 1.83 0.00 1.83 0 0.85 0.05 0.96 1.0 0.047 36.08 52.54 0.080 1.69 0.90 0.23 0.80 0.99 1.0 0.040 4.87 80.16 0.128 3.12 2.41 2 0.974605 14.174 1.357 16.462
23.458 5592.40 17.3 0.173 16.5 120.2 52.09 1.00%Sand-Slime Tailing 0.059 119.0 1.26 0.37 0.89 1 0.97 16.025 222.75 19.46 18 1.08% 2.5 47% 1.84 0.00 1.84 0 0.85 0.05 0.96 1.0 0.047 37.13 56.58 0.084 1.79 0.90 0.25 0.80 0.99 1.0 0.040 3.02 58.77 0.099 2.40 2.10 2 0.97065 16.754 1.604 19.459
23.622 5592.24 26.9 0.267 26.6 51.3 22.22 0.99%Sand-Slime Tailing 0.059 119.0 1.27 0.37 0.90 1 0.97 25.759 358.04 30.28 29 1.04% 2.4 47% 1.85 0.00 1.85 0 0.85 0.06 0.95 1.0 0.047 40.92 71.20 0.101 2.16 0.90 0.32 0.80 0.99 1.0 0.040 2.17 65.84 0.107 2.58 2.37 2 0.969095 26.069 2.4958 30.277
23.786 5592.07 18.3 0.357 17.9 69.4 30.09 1.95%Sand-Slime Tailing 0.059 119.0 1.28 0.38 0.90 1 0.96 17.187 238.90 20.45 19 2.10% 2.7 47% 1.86 0.00 1.86 0 0.85 0.05 0.96 1.0 0.047 37.47 57.92 0.086 1.83 0.90 0.26 0.80 0.99 1.0 0.040 3.87 79.22 0.126 3.05 2.44 2 0.96285 17.604 1.6854 20.446
23.950 5591.91 13.8 0.283 13.3 90.4 39.18 2.05%Sand-Slime Tailing 0.059 119.0 1.29 0.38 0.91 1 0.96 12.716 176.76 15.40 14 2.26% 2.8 47% 1.87 0.00 1.87 0 0.84 0.05 0.96 1.0 0.047 35.70 51.10 0.079 1.67 0.89 0.23 0.80 0.99 1.0 0.040 4.89 75.23 0.120 2.88 2.27 2 0.959003 13.258 1.2693 15.398
Liquef_SeismicSettle_30Aug2015.xls Page 12 of 36
Energy Fuels Resources (USA) Inc.
White Mesa MillLiquefaction Analyses
Data File: 13-52106_SP2W5-C-BSC-CPT 5604.20 Water surface elevation during CPT investigation (ft5615.86 Ground Surface Elevation at time of CPT (ft amsl)Location: White Mesa 2013 CPT Investigation 0.15 5604.20 Water surface elevation at t0 (ft amsl)5626.28 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl)
..\..\..\6.2.3 Field Data\2013 Field Investigation\Conetec Dat 5.5 5589.01 Water surface elevation at t1 (ft amsl) 0.50 Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after pla ###### 5626.03 5625.78 0.50 0.055 110 0.028 0.014 0.00 0.00 0.028 0.014
Tailings Sands 1.69 5584.01 Water surface elevation at t2 (ft amsl)3.50 Thickness of Water Storage/Rooting Zone (ft) ######5624.03 5622.28 3.50 0.054 107 0.215 0.121 0.00 0.00 0.215 0.121
Tailings Sand-Slimes 4.00 Thickness of High Compaction Layer (ft)###### 5620.28 5618.28 4.00 0.060 120 0.454 0.334 0.00 0.00 0.454 0.334
Tailings Slimes 1.44 2.42 Thickness of Random/Platform Fill on on top of existing interim cover (ft) ###### 5617.07 5615.86 2.42 0.050 101 0.576 0.515 0.00 0.00 0.576 0.515
Interim Cover 0.47 1151.89 Additional Stress due to Final Cover Placement, ΔσFC (psf)
Cells Requiring User Input/Manipulation 2.21 2.21 7.51 5584.01 Elevation of bottom of tailings (liner) (ft amsl)
rd Cσ Kσ Ka rd Dr f Kσ Ka Avg CN qc1 qc1 qc1N
(ft) (ft amsl) TSF TSF TSF (ft) PSI (%) (tcf) (pcf) (tsf)(tsf)(tsf) 1=Yes TSF MPa % (tsf)(tsf)(tsf) 1=Yes FoS TSF MPa
0=No 0=No
Scaling Factor for stress ration, rm
Volumetric Strain Ratio for Site-Specific Design Eart
Equiv. Number of Uniform Strain Cycles, N
Youd et al. (2001)
CSR
M=7.5,
s'v=1atm
0.15
Earthquake Moment Magnitude, M: 5.5
Magnitude Scaling Factor, MSF:
Equil Pore
Pressure at time of
Conditions at t1 Liquefaction Triggering Analyses Idriss & Boulanger (2008)Equil
Pore
Pressure
at t1CN qc1 qc1 qc1N
Normalized Cone
Penetration Resistance, Qt
Normalized Friction
Ratio, Fr (%)
Total Stress
at t1 Liquefiable?
1=Yes
2=No
Cyclic Stress RatioEffective
Stress at
t1
Saturated
at t1
Idriss & Boulanger (2008)
Idriss and Boulanger (2008)
Max. Horiz. Acceleration, Amax/g:
Earthquake Moment Magnitude, M:
Magnitude Scaling Factor, MSF:
WHITE MESA TAILINGS REPOSITORY LIQUEFACTION AND SEISMIC SETTLEMENT ANALYSES - 2W5-C Elev. at
Top of Layer (ft)
Elev. At
Midpoint of Layer (ft)
Bottom
of Layer (ft)
Thickness of Layer (ft)
CSR
M=7.5,
s'v=1atm
Kc
High Compaction Layer
Platform/Random Fill Layer
Pw (u2)Pw (u2)
2013 CPT Data from ConeTec CPT Data Interpretations
fs/qt
Material Type (as determined
by fines
Unit Weight Unit Weight
Total Stress
at time of CPT
Depth
at time of CPT Elevation qt fs qc
Effective Stress at
time of CPT
Saturated
at time of CPT
Type Index, Ic FC
Youd, et al (2001)
Max. Horiz. Acceleration, Amax/g:
Stress at
Bottom of Layer (tsf)
Stress at
Midpoint of Layer (tsf)FINAL COVER
Erosion Protection Layer
Water Storage/Rooting Zone Layer
qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Equil Pore
Pressure at Midpoint of Layer (tsf)
Unit Weight (tcf)
Unit Weight (pcf)
Stress at
Bottom of Layer (tsf)
Stress at
Midpoint of Layer (tsf)
Pressure
at Bottom of Layer (tsf)
Cyclic Resistance Ratio
FoS
Cyclic Stress Ratio
FoS
∆qc1n qc1n-cs
(CRR)
M=7.5,
s'v=1atm
24.114 5591.75 10.3 0.189 10.0 60.4 26.18 1.83%Sand-Slime Tailing 0.059 119.0 1.30 0.39 0.91 1 0.96 9.514 132.24 11.47 10 2.09% 2.9 47% 1.88 0.00 1.88 0 0.84 0.05 0.96 1.0 0.047 34.32 45.79 0.074 1.57 0.89 0.20 0.80 0.99 1.0 0.040 5.85 67.03 0.108 2.59 2.08 2 0.95519 9.874 0.9453 11.468
24.278 5591.58 10.0 0.219 9.3 112.2 48.61 2.19%Slime Tailings 0.057 113.1 1.31 0.39 0.92 1 0.95 8.871 123.30 11.08 9 2.51% 3.0 71% 1.89 0.00 1.89 0 0.84 0.05 0.96 1.0 0.047 33.95 45.02 0.073 1.55 0.89 0.19 0.80 0.99 1.0 0.040 6.45 71.42 0.114 2.72 2.14 2 0.951801 9.5373 0.9131 11.077
24.442 5591.42 14.0 0.326 13.2 122.0 52.86 2.33%Slime Tailings 0.057 113.1 1.32 0.40 0.92 1 0.95 12.529 174.15 15.39 14 2.58% 2.8 71% 1.90 0.00 1.90 0 0.84 0.05 0.96 1.0 0.047 35.45 50.84 0.078 1.68 0.89 0.23 0.80 0.99 1.0 0.040 5.19 79.86 0.127 3.03 2.36 2 0.948439 13.251 1.2687 15.390
24.606 5591.25 14.1 0.236 13.7 63.7 27.60 1.67%Sand-Slime Tailing 0.059 119.0 1.33 0.40 0.93 1 0.94 12.962 180.17 15.49 14 1.85% 2.8 47% 1.91 0.00 1.91 0 0.84 0.05 0.96 1.0 0.047 35.73 51.22 0.079 1.69 0.89 0.23 0.80 0.99 1.0 0.040 4.48 69.42 0.111 2.64 2.16 2 0.944722 13.337 1.2769 15.490
24.770 5591.09 23.3 0.448 22.8 72.8 31.55 1.92%Sand-Slime Tailing 0.059 119.0 1.34 0.41 0.93 1 0.94 21.533 299.31 25.51 24 2.04% 2.6 47% 1.92 0.00 1.92 0 0.84 0.06 0.96 1.0 0.046 39.25 64.75 0.093 2.02 0.89 0.29 0.80 0.98 1.0 0.040 3.30 84.25 0.136 3.21 2.61 2 0.943183 21.962 2.1026 25.507
24.934 5590.93 29.6 0.313 29.2 58.1 25.19 1.06%Sand-Slime Tailing 0.059 119.0 1.35 0.41 0.94 1 0.94 27.544 382.86 32.39 30 1.11% 2.4 47% 1.93 0.00 1.93 0 0.84 0.06 0.95 1.0 0.046 41.66 74.05 0.105 2.28 0.89 0.33 0.80 0.98 1.0 0.040 2.15 69.61 0.111 2.62 2.45 2 0.942626 27.886 2.6698 32.388
25.098 5590.76 38.5 0.429 38.5 11.6 5.02 1.11%Sand-Slime Tailing 0.059 119.0 1.36 0.42 0.94 1 0.94 36.269 504.14 42.20 40 1.15% 2.3 47% 1.94 0.00 1.94 0 0.83 0.07 0.95 1.0 0.046 45.10 87.31 0.123 2.69 0.88 0.38 0.80 0.98 1.0 0.040 1.86 78.30 0.125 2.93 2.81 2 0.943024 36.337 3.4789 42.203
25.262 5590.60 30.5 0.493 30.4 9.2 3.99 1.62%Sand-Slime Tailing 0.059 119.0 1.37 0.42 0.94 1 0.94 28.493 396.05 33.16 31 1.69% 2.5 47% 1.94 0.00 1.94 0 0.83 0.06 0.95 1.0 0.046 41.93 75.08 0.106 2.32 0.88 0.33 0.80 0.98 1.0 0.040 2.55 84.46 0.136 3.18 2.75 2 0.936336 28.547 2.733 33.155
25.426 5590.43 25.9 0.457 25.8 10.7 4.64 1.77%Sand-Slime Tailing 0.059 119.0 1.38 0.43 0.95 1 0.93 23.999 333.59 27.95 26 1.87% 2.5 47% 1.95 0.00 1.95 0 0.83 0.06 0.95 1.0 0.046 40.10 68.05 0.097 2.12 0.88 0.31 0.80 0.98 1.0 0.040 2.99 83.54 0.134 3.13 2.63 2 0.930567 24.062 2.3037 27.946
25.590 5590.27 23.2 0.409 23.0 38.5 16.67 1.76%Sand-Slime Tailing 0.059 119.0 1.39 0.43 0.95 1 0.93 21.279 295.77 24.97 23 1.87% 2.6 47% 1.96 0.00 1.96 0 0.83 0.06 0.95 1.0 0.046 39.06 64.03 0.092 2.02 0.88 0.29 0.80 0.98 1.0 0.040 3.23 80.75 0.129 3.00 2.51 2 0.925559 21.501 2.0585 24.972
25.754 5590.11 23.9 0.457 23.6 50.5 21.90 1.91%Sand-Slime Tailing 0.059 119.0 1.40 0.44 0.96 1 0.92 21.735 302.12 25.58 23 2.03% 2.6 47% 1.97 0.00 1.97 0 0.83 0.06 0.95 1.0 0.046 39.27 64.86 0.093 2.04 0.88 0.29 0.80 0.98 1.0 0.040 3.31 84.64 0.136 3.16 2.60 2 0.922538 22.026 2.1088 25.582
25.918 5589.94 23.4 0.409 22.9 85.5 37.03 1.75%Sand-Slime Tailing 0.059 119.0 1.41 0.44 0.96 1 0.92 21.004 291.95 24.96 23 1.86% 2.6 47% 1.98 0.00 1.98 0 0.83 0.06 0.95 1.0 0.046 39.06 64.02 0.092 2.03 0.88 0.29 0.80 0.98 1.0 0.040 3.23 80.65 0.129 2.97 2.50 2 0.918806 21.494 2.0578 24.964
26.082 5589.78 26.8 0.466 26.4 63.1 27.33 1.74%Sand-Slime Tailing 0.059 119.0 1.42 0.45 0.97 1 0.92 24.200 336.38 28.53 26 1.84% 2.5 47% 1.99 0.00 1.99 0 0.83 0.06 0.95 1.0 0.045 40.31 68.83 0.098 2.16 0.88 0.31 0.80 0.98 1.0 0.040 2.94 83.82 0.135 3.10 2.63 2 0.917709 24.561 2.3515 28.526
26.246 5589.61 24.8 0.467 24.4 58.0 25.13 1.89%Sand-Slime Tailing 0.059 119.0 1.43 0.46 0.97 1 0.91 22.278 309.67 26.26 24 2.00% 2.6 47% 2.00 0.00 2.00 0 0.82 0.06 0.95 1.0 0.045 39.51 65.77 0.094 2.08 0.88 0.30 0.80 0.98 1.0 0.040 3.24 84.96 0.137 3.14 2.61 2 0.913039 22.609 2.1646 26.259
26.410 5589.45 27.9 0.443 27.7 46.7 20.25 1.59%Sand-Slime Tailing 0.059 119.0 1.44 0.46 0.98 1 0.91 25.216 350.50 29.60 27 1.67% 2.5 47% 2.01 0.00 2.01 0 0.82 0.06 0.95 1.0 0.045 40.68 70.28 0.100 2.21 0.87 0.31 0.80 0.98 1.0 0.040 2.75 81.34 0.130 2.97 2.59 2 0.911974 25.482 2.4397 29.596
26.574 5589.29 21.4 0.459 21.2 34.8 15.06 2.15%Sand-Slime Tailing 0.059 119.0 1.45 0.47 0.98 1 0.90 19.114 265.68 22.43 20 2.30% 2.7 47% 2.02 0.00 2.02 0 0.82 0.05 0.95 1.0 0.045 38.17 60.59 0.089 1.95 0.87 0.27 0.80 0.97 1.0 0.040 3.85 86.38 0.140 3.19 2.57 2 0.903719 19.31 1.8487 22.427
26.739 5589.12 22.9 0.449 22.4 91.9 39.81 1.96%Sand-Slime Tailing 0.059 119.0 1.46 0.47 0.99 1 0.90 20.162 280.25 24.02 22 2.09% 2.6 47% 2.03 0.00 2.03 0 0.82 0.06 0.95 1.0 0.045 38.72 62.74 0.091 2.01 0.87 0.28 0.80 0.97 1.0 0.039 3.52 84.47 0.136 3.09 2.55 2 0.9017 20.679 1.9798 24.018
26.903 5588.96 23.7 0.369 23.3 57.9 25.11 1.56%Sand-Slime Tailing 0.059 119.0 1.47 0.48 0.99 1 0.90 20.966 291.42 24.73 22 1.66% 2.6 47% 2.04 0.00 2.04 1 0.82 0.06 0.95 1.0 0.045 38.97 63.70 0.092 2.04 0.87 0.29 0.80 0.97 1.0 0.039 3.10 76.78 0.122 2.76 2.40 2 0.899044 21.291 2.0384 24.728
27.067 5588.79 17.9 0.322 17.4 76.8 33.26 1.80%Sand-Slime Tailing 0.059 119.0 1.48 0.48 1.00 1 0.89 15.524 215.78 18.53 16 1.96% 2.7 47% 2.05 0.01 2.05 1 0.82 0.05 0.96 1.0 0.045 36.80 55.33 0.083 1.83 0.87 0.25 0.80 0.97 1.0 0.040 4.10 75.99 0.121 2.72 2.27 2 0.892685 15.952 1.5272 18.527
27.231 5588.63 17.2 0.221 16.6 101.5 44.00 1.29%Sand-Slime Tailing 0.059 119.0 1.49 0.49 1.00 1 0.89 14.729 204.74 17.76 16 1.41% 2.7 47% 2.06 0.01 2.05 1 0.82 0.05 0.96 1.0 0.045 36.53 54.29 0.082 1.80 0.87 0.24 0.80 0.97 1.0 0.040 3.67 65.24 0.106 2.37 2.08 2 0.889446 15.293 1.4641 17.762
27.395 5588.47 17.3 0.221 16.7 96.1 41.66 1.28%Sand-Slime Tailing 0.059 119.0 1.50 0.49 1.00 1 0.89 14.791 205.60 17.80 16 1.40% 2.7 47% 2.07 0.02 2.05 1 0.82 0.05 0.96 1.0 0.045 36.54 54.34 0.082 1.80 0.87 0.24 0.80 0.97 1.0 0.040 3.66 65.18 0.106 2.35 2.08 2 0.886234 15.323 1.467 17.797
27.559 5588.30 17.1 0.300 16.3 130.8 56.69 1.75%Sand-Slime Tailing 0.059 119.0 1.51 0.50 1.01 1 0.88 14.394 200.07 17.55 15 1.92% 2.7 47% 2.08 0.02 2.06 1 0.81 0.05 0.96 1.0 0.045 36.46 54.01 0.081 1.79 0.86 0.24 0.80 0.97 1.0 0.040 4.23 74.31 0.118 2.61 2.20 2 0.883047 15.115 1.4471 17.555
27.723 5588.14 24.2 0.427 23.2 165.1 71.55 1.76%Sand-Slime Tailing 0.059 119.0 1.52 0.50 1.01 1 0.88 20.498 284.93 24.87 22 1.88% 2.6 47% 2.09 0.03 2.06 1 0.81 0.06 0.95 1.0 0.045 39.02 63.89 0.092 2.04 0.86 0.29 0.80 0.97 1.0 0.040 3.29 81.72 0.131 2.88 2.46 2 0.883549 21.409 2.0497 24.865
27.887 5587.97 31.6 0.511 31.4 40.1 17.37 1.62%Sand-Slime Tailing 0.059 119.0 1.53 0.51 1.02 1 0.89 27.813 386.60 32.56 30 1.70% 2.5 47% 2.10 0.03 2.07 1 0.81 0.06 0.95 1.0 0.045 41.72 74.28 0.105 2.33 0.86 0.33 0.80 0.97 1.0 0.040 2.62 85.37 0.138 3.02 2.67 2 0.886883 28.035 2.684 32.561
28.051 5587.81 29.9 0.506 29.4 77.3 33.50 1.69%Sand-Slime Tailing 0.059 119.0 1.53 0.51 1.02 1 0.88 25.927 360.38 30.61 28 1.79% 2.5 47% 2.11 0.04 2.07 1 0.81 0.06 0.95 1.0 0.045 41.04 71.64 0.102 2.25 0.86 0.32 0.80 0.97 1.0 0.040 2.80 85.63 0.138 3.01 2.63 2 0.882469 26.353 2.523 30.607
28.215 5587.65 34.1 0.485 33.8 56.5 24.47 1.42%Sand-Slime Tailing 0.059 119.0 1.54 0.52 1.03 1 0.88 29.829 414.63 35.01 32 1.49% 2.4 47% 2.12 0.04 2.08 1 0.81 0.06 0.95 1.0 0.045 42.58 77.59 0.109 2.43 0.86 0.34 0.80 0.97 1.0 0.040 2.36 82.64 0.132 2.87 2.65 2 0.88305 30.141 2.8857 35.007
28.379 5587.48 23.6 0.376 23.3 54.2 23.50 1.59%Sand-Slime Tailing 0.059 119.0 1.55 0.52 1.03 1 0.87 20.248 281.45 23.86 21 1.71% 2.6 47% 2.13 0.05 2.08 1 0.81 0.05 0.95 1.0 0.045 38.67 62.53 0.091 2.00 0.86 0.28 0.80 0.96 1.0 0.040 3.25 77.44 0.123 2.65 2.33 2 0.870513 20.543 1.9668 23.859
28.543 5587.32 20.0 0.587 19.3 110.3 47.80 2.94%Slime Tailings 0.057 113.1 1.56 0.53 1.04 1 0.86 16.699 232.11 20.09 18 3.18% 2.8 71% 2.14 0.05 2.09 1 0.81 0.05 0.95 1.0 0.046 37.08 57.17 0.085 1.86 0.86 0.26 0.80 0.96 1.0 0.040 4.87 97.86 0.167 3.58 2.72 2 0.864778 17.294 1.6558 20.086
28.707 5587.15 20.3 0.625 19.3 175.0 75.82 3.07%Slime Tailings 0.057 113.1 1.57 0.53 1.04 1 0.86 16.595 230.67 20.37 18 3.33% 2.8 71% 2.15 0.06 2.09 1 0.80 0.05 0.95 1.0 0.046 37.18 57.55 0.085 1.87 0.86 0.26 0.80 0.96 1.0 0.040 4.93 100.50 0.174 3.72 2.80 2 0.862075 17.537 1.6789 20.368
28.871 5586.99 70.9 0.744 70.3 91.2 39.52 1.05%Sand Tailings 0.062 123.5 1.58 0.54 1.05 1 0.90 63.004 875.75 73.77 66 1.07% 2.1 18% 2.16 0.06 2.10 1 0.80 0.09 0.92 1.0 0.044 40.95 114.71 0.169 3.83 0.85 0.50 0.75 0.95 1.0 0.041 1.40 103.45 0.183 3.88 3.85 2 0.896209 63.514 6.0808 73.767
29.035 5586.82 72.6 0.686 72.2 66.2 28.68 0.94%Sand Tailings 0.062 123.5 1.59 0.54 1.05 1 0.89 64.601 897.96 75.46 68 0.97% 2.0 18% 2.17 0.07 2.10 1 0.80 0.09 0.92 1.0 0.044 41.38 116.84 0.173 3.92 0.85 0.50 0.75 0.95 1.0 0.041 1.35 101.77 0.178 3.76 3.84 2 0.894632 64.971 6.2203 75.460
29.199 5586.66 79.5 1.181 79.4 15.5 6.72 1.49%Sand Tailings 0.062 123.5 1.60 0.55 1.06 1 0.90 71.104 988.34 82.68 74 1.52% 2.1 18% 2.18 0.07 2.11 1 0.80 0.09 0.92 1.0 0.044 43.23 125.91 0.193 4.40 0.85 0.52 0.74 0.95 1.0 0.041 1.51 124.72 0.260 5.46 4.93 2 0.895737 71.19 6.8158 82.683
29.363 5586.50 113.4 1.549 113.4 8.3 3.58 1.37%Sand Tailings 0.062 123.5 1.61 0.55 1.06 1 0.91 103.022 1432.01 119.71 105 1.39% 2.0 18% 2.19 0.08 2.11 1 0.80 0.12 0.89 1.0 0.043 52.69 172.40 0.433 10.18 0.85 0.63 0.68 0.94 1.0 0.042 1.28 153.66 0.417 8.71 9.44 2 0.908885 103.07 9.8678 119.708
29.527 5586.33 133.5 2.246 133.4 9.1 3.95 1.68%Sand Tailings 0.062 123.5 1.62 0.56 1.07 1 0.91 122.058 1696.61 141.82 124 1.70% 2.0 18% 2.20 0.08 2.12 1 0.80 0.15 0.87 1.0 0.041 58.35 200.17 1.000 24.11 0.85 0.69 0.66 0.93 1.0 0.042 1.30 184.56 1.000 20.76 22.43 2 0.914773 122.11 11.691 141.824
29.691 5586.17 134.1 3.012 134.1 -0.7 -0.28 2.25%Sand-Slime Tailing 0.059 119.0 1.63 0.56 1.07 1 0.91 122.449 1702.04 142.21 124 2.27% 2.1 47% 2.21 0.09 2.12 1 0.80 0.15 0.87 1.0 0.041 80.18 222.39 1.000 24.12 0.85 0.69 0.66 0.93 1.0 0.042 1.44 205.32 1.000 20.66 22.39 2 0.91325 122.44 11.723 142.212
29.855 5586.00 114.2 2.896 114.0 26.4 11.45 2.54%Sand-Slime Tailing 0.059 119.0 1.64 0.57 1.08 1 0.90 102.984 1431.48 119.78 105 2.57% 2.2 47% 2.22 0.09 2.13 1 0.79 0.12 0.89 1.0 0.043 72.31 192.09 0.813 19.11 0.85 0.63 0.68 0.93 1.0 0.042 1.62 194.57 1.000 20.55 19.83 2 0.903371 103.13 9.874 119.783
30.019 5585.84 179.1 2.896 178.1 160.2 69.40 1.62%Sand Tailings 0.062 123.5 1.65 0.57 1.08 1 0.93 164.913 2292.29 192.61 164 1.63% 1.9 18% 2.23 0.10 2.13 1 0.79 0.24 0.78 1.0 0.037 71.33 263.94 1.000 26.69 0.84 0.80 0.60 0.91 1.0 0.043 1.19 229.76 1.000 20.45 23.57 2 0.925852 165.84 15.877 192.611
30.183 5585.68 217.4 2.896 217.3 26.4 11.43 1.33%Sand Tailings 0.062 123.5 1.66 0.58 1.09 1 0.94 203.425 2827.61 236.45 199 1.34% 1.8 18% 2.24 0.10 2.14 1 0.79 0.30 0.73 1.0 0.035 82.54 318.98 1.000 28.64 0.84 0.89 0.60 0.91 1.0 0.043 1.10 259.26 1.000 20.34 24.49 2 0.936365 203.58 19.491 236.445
Liquef_SeismicSettle_30Aug2015.xls Page 13 of 36
Energy Fuels Resources (USA) Inc.
White Mesa MillLiquefaction Analyses
Data File: 13-52106_SP2W6-S-BSC-CPT 5604.40 Water surface elevation during CPT investigation (ft5615.85 Ground Surface Elevation at time of CPT (ft amsl)Location: White Mesa 2013 CPT Investigation 0.15 5604.40 Water surface elevation at t0 (ft amsl)5625.41 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl)
..\..\..\6.2.3 Field Data\2013 Field Investigation\Conetec Dat 5.5 5588.59 Water surface elevation at t1 (ft amsl) 0.50 Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after pla ###### 5625.16 5624.91 0.50 0.055 110 0.028 0.014 0.00 0.00 0.028 0.014
Tailings Sands 1.69 5583.59 Water surface elevation at t2 (ft amsl)3.50 Thickness of Water Storage/Rooting Zone (ft) ###### 5623.16 5621.41 3.50 0.054 107 0.215 0.121 0.00 0.00 0.215 0.121
Tailings Sand-Slimes 4.00 Thickness of High Compaction Layer (ft)###### 5619.41 5617.41 4.00 0.060 120 0.454 0.334 0.00 0.00 0.454 0.334
Tailings Slimes 1.44 1.56 Thickness of Random/Platform Fill on on top of existing interim cover (ft) ###### 5616.63 5615.85 1.56 0.050 101 0.533 0.493 0.00 0.00 0.533 0.493
Interim Cover 0.47 1065.26 Additional Stress due to Final Cover Placement, ΔσFC (psf)
Cells Requiring User Input/Manipulation 2.21 2.21 7.51 5583.59 Elevation of bottom of tailings (liner) (ft amsl)
rd Cσ Kσ Ka rd Dr f Kσ Ka Avg CN qc1 qc1 qc1N
(ft) (ft amsl) TSF TSF TSF (ft) PSI (%) (tcf) (pcf) (tsf)(tsf)(tsf) 1=Yes TSF MPa % (tsf)(tsf)(tsf) 1=Yes FoS TSF MPa
0=No 0=No
0.164 5615.69 6.5 0.020 6.5 1.2 0.51 0.31%Interim Cover 0.050 100.7 0.01 0.00 0.01 0 1.70 11.067 153.83 12.87 788 0.31% 0.9 51% 0.54 0.00 0.54 0 1.00 0.05 1.02 1.0 0.059 34.84 47.70 0.075 1.27 0.98 0.21 0.80 2.53 1.0 0.017 1.00 12.87 0.061 3.63 2.45 2 1.7 11.079 1.0607 12.868
0.328 5615.52 22.2 0.060 22.2 2.8 1.22 0.27%Interim Cover 0.050 100.7 0.02 0.00 0.02 0 1.70 37.723 524.35 43.85 1343 0.27% 0.7 51% 0.55 0.00 0.55 0 1.00 0.07 1.03 1.0 0.060 45.71 89.56 0.126 2.12 0.98 0.38 0.80 2.20 1.0 0.020 1.00 43.85 0.087 4.59 3.35 2 1.7 37.753 3.6145 43.848
0.492 5615.36 34.7 0.122 34.7 1.7 0.75 0.35%Interim Cover 0.050 100.7 0.02 0.00 0.02 0 1.70 58.973 819.72 68.51 1399 0.35% 0.8 51% 0.56 0.00 0.56 0 1.00 0.08 1.04 1.0 0.060 54.36 122.88 0.186 3.10 0.98 0.48 0.76 2.33 1.0 0.018 1.00 68.51 0.110 5.44 4.27 2 1.7 58.991 5.6478 68.515
0.656 5615.19 54.7 0.219 54.6 1.9 0.81 0.40%Interim Cover 0.050 100.7 0.03 0.00 0.03 0 1.70 92.888 1291.14 107.91 1653 0.40% 0.9 51% 0.57 0.00 0.57 0 1.00 0.11 1.05 1.0 0.061 68.19 176.10 0.478 7.90 0.98 0.60 0.70 2.66 1.0 0.016 1.00 107.91 0.197 119.17 63.53 2 1.7 92.908 8.895 107.907
0.820 5615.03 83.1 0.349 83.1 2.0 0.85 0.42%Interim Cover 0.050 100.7 0.04 0.00 0.04 0 1.70 141.202 1962.71 164.02 2010 0.42% 0.9 51% 0.57 0.00 0.57 0 1.00 0.18 1.07 1.0 0.062 87.88 251.90 1.000 16.11 0.98 0.74 0.63 3.07 1.0 0.014 1.00 164.02 1.000 484.49 250.30 2 1.7 141.22 13.521 164.022
0.984 5614.87 94.0 0.544 94.0 2.0 0.85 0.58%Interim Cover 0.050 100.7 0.05 0.00 0.05 0 1.70 159.715 2220.04 185.52 1895 0.58% 1.0 51% 0.58 0.00 0.58 0 1.00 0.22 1.09 1.0 0.063 95.43 280.95 1.000 15.90 0.98 0.79 0.61 3.07 1.0 0.014 1.00 185.52 1.000 403.90 209.90 2 1.7 159.74 15.293 185.524
1.148 5614.70 94.8 0.470 94.8 2.0 0.87 0.50%Interim Cover 0.050 100.7 0.06 0.00 0.06 0 1.70 161.126 2239.65 187.16 1638 0.50% 1.0 51% 0.59 0.00 0.59 0 1.00 0.23 1.09 1.0 0.063 96.00 283.16 1.000 15.93 0.98 0.79 0.61 2.91 1.0 0.015 1.00 187.16 1.000 346.34 181.13 2 1.7 161.15 15.428 187.163
1.312 5614.54 92.2 0.392 92.2 1.8 0.77 0.43%Interim Cover 0.050 100.7 0.07 0.00 0.07 0 1.70 156.689 2177.98 182.01 1394 0.43% 0.9 51% 0.60 0.00 0.60 0 1.00 0.22 1.08 1.0 0.062 94.19 276.20 1.000 16.04 0.97 0.78 0.61 2.72 1.0 0.016 1.00 182.01 1.000 303.16 159.60 2 1.7 156.71 15.003 182.007
1.476 5614.37 90.8 0.315 90.8 0.7 0.29 0.35%Interim Cover 0.050 100.7 0.07 0.00 0.07 0 1.70 154.309 2144.90 179.23 1220 0.35% 0.9 51% 0.61 0.00 0.61 0 1.00 0.21 1.07 1.0 0.062 93.22 272.45 1.000 16.12 0.97 0.77 0.61 2.58 1.0 0.017 1.00 179.23 1.000 269.58 142.85 2 1.7 154.32 14.774 179.229
1.640 5614.21 85.8 0.359 85.8 4.3 1.87 0.42%Interim Cover 0.050 100.7 0.08 0.00 0.08 0 1.70 145.843 2027.22 169.44 1038 0.42% 1.0 51% 0.62 0.00 0.62 0 1.00 0.19 1.06 1.0 0.062 89.78 259.22 1.000 16.26 0.97 0.75 0.62 2.41 1.0 0.018 1.00 169.44 1.000 242.72 129.49 2 1.7 145.89 13.967 169.441
1.804 5614.05 83.8 0.375 83.8 2.0 0.86 0.45%Interim Cover 0.050 100.7 0.09 0.00 0.09 0 1.70 142.375 1979.01 165.38 921 0.45% 1.0 51% 0.62 0.00 0.62 0 1.00 0.18 1.06 1.0 0.061 88.36 253.74 1.000 16.33 0.97 0.74 0.63 2.30 1.0 0.019 1.00 165.38 1.000 220.74 118.54 2 1.7 142.4 13.633 165.384
1.968 5613.88 76.6 0.445 76.6 1.8 0.79 0.58%Interim Cover 0.050 100.7 0.10 0.00 0.10 0 1.70 130.135 1808.88 151.17 771 0.58% 1.1 51% 0.63 0.00 0.63 0 1.00 0.16 1.05 1.0 0.061 83.37 234.54 1.000 16.49 0.97 0.71 0.65 2.15 1.0 0.020 1.00 151.17 0.401 81.22 48.86 2 1.7 130.15 12.461 151.167
2.133 5613.72 61.3 0.546 61.3 1.1 0.47 0.89%Interim Cover 0.050 100.7 0.11 0.00 0.11 0 1.70 104.159 1447.81 120.99 570 0.89% 1.4 51% 0.64 0.00 0.64 0 1.00 0.13 1.04 1.0 0.060 72.78 193.77 0.869 14.52 0.97 0.64 0.68 1.94 1.0 0.022 1.00 120.99 0.245 45.74 30.13 2 1.7 104.17 9.9733 120.988
2.297 5613.55 64.2 0.470 64.2 1.8 0.79 0.73%Interim Cover 0.050 100.7 0.12 0.00 0.12 0 1.70 109.123 1516.81 126.76 554 0.73% 1.3 51% 0.65 0.00 0.65 0 1.00 0.13 1.04 1.0 0.060 74.81 201.57 1.000 16.72 0.97 0.65 0.67 1.92 1.0 0.022 1.00 126.76 0.269 46.79 31.75 2 1.7 109.14 10.449 126.762
2.461 5613.39 68.7 0.730 68.7 2.8 1.20 1.06%Interim Cover 0.050 100.7 0.12 0.00 0.12 0 1.70 116.807 1623.62 135.70 554 1.06% 1.4 51% 0.66 0.00 0.66 0 1.00 0.14 1.04 1.0 0.060 77.94 213.64 1.000 16.72 0.97 0.67 0.66 1.92 1.0 0.022 1.00 135.70 0.312 50.65 33.68 2 1.7 116.84 11.186 135.698
2.625 5613.23 191.6 1.300 191.6 4.3 1.85 0.68%Interim Cover 0.050 100.7 0.13 0.00 0.13 0 1.64 314.125 4366.34 364.89 1449 0.68% 1.1 51% 0.66 0.00 0.66 0 1.00 0.30 1.08 1.0 0.062 ##### 523.26 1.000 16.12 0.97 1.10 0.60 2.12 1.0 0.020 1.00 364.89 1.000 152.06 84.09 2 1.639484 314.17 30.079 364.888
2.789 5613.06 241.3 3.362 241.3 3.2 1.37 1.39%Interim Cover 0.050 100.7 0.14 0.00 0.14 0 1.61 389.250 5410.57 452.13 1717 1.39% 1.4 51% 0.67 0.00 0.67 0 0.99 0.30 1.07 1.0 0.062 ##### 641.11 1.000 16.19 0.97 1.23 0.60 2.07 1.0 0.021 1.00 452.13 1.000 143.17 79.68 2 1.61347 389.28 37.27 452.127
2.953 5612.90 265.3 5.646 265.3 4.3 1.85 2.13%Interim Cover 0.050 100.7 0.15 0.00 0.15 0 1.59 421.663 5861.12 489.79 1783 2.13% 1.6 51% 0.68 0.00 0.68 0 0.99 0.30 1.07 1.0 0.061 ##### 691.99 1.000 16.26 0.97 1.28 0.60 2.02 1.0 0.021 1.00 489.79 1.000 135.27 75.77 2 1.589322 421.71 40.374 489.785
3.117 5612.73 238.5 7.457 238.5 2.5 1.06 3.13%Interim Cover 0.050 100.7 0.16 0.00 0.16 0 1.57 373.653 5193.78 434.00 1518 3.13% 1.7 51% 0.69 0.00 0.69 0 0.99 0.30 1.07 1.0 0.061 ##### 616.63 1.000 16.33 0.97 1.20 0.60 1.98 1.0 0.022 1.06 461.98 1.000 128.20 72.27 2 1.566812 373.68 35.776 434.004
3.281 5612.57 217.3 7.057 217.3 1.3 0.58 3.25%Sand-Slime Tailing 0.047 93.3 0.16 0.00 0.16 0 1.55 336.251 4673.89 390.55 1319 3.25% 1.8 47% 0.70 0.00 0.70 0 0.99 0.30 1.06 1.0 0.061 ##### 557.82 1.000 16.40 0.97 1.14 0.60 1.94 1.0 0.022 1.08 423.01 1.000 122.29 69.34 2 1.547263 336.26 32.194 390.550
3.445 5612.41 217.9 6.621 217.9 0.9 0.38 3.04%Sand-Slime Tailing 0.047 93.3 0.17 0.00 0.17 0 1.53 333.101 4630.11 386.89 1264 3.04% 1.7 47% 0.70 0.00 0.70 0 0.99 0.30 1.06 1.0 0.061 ##### 552.87 1.000 16.46 0.97 1.14 0.60 1.90 1.0 0.022 1.07 412.59 1.000 116.91 66.68 2 1.52883 333.11 31.892 386.887
3.609 5612.24 256.0 7.793 256.0 1.4 0.59 3.04%Sand-Slime Tailing 0.047 93.3 0.18 0.00 0.18 0 1.51 386.904 5377.97 449.38 1422 3.05% 1.7 47% 0.71 0.00 0.71 0 0.99 0.30 1.06 1.0 0.061 ##### 637.29 1.000 16.53 0.97 1.22 0.60 1.87 1.0 0.023 1.06 476.39 1.000 111.98 64.25 2 1.511403 386.92 37.043 449.380
3.773 5612.08 314.1 8.489 314.1 6.9 2.98 2.70%Sand Tailings 0.051 102.8 0.19 0.00 0.19 0 1.49 469.029 6519.50 544.82 1667 2.70% 1.7 18% 0.72 0.00 0.72 0 0.99 0.30 1.05 1.0 0.060 ##### 706.20 1.000 16.60 0.97 1.35 0.60 1.84 1.0 0.023 1.02 554.48 1.000 107.01 61.80 2 1.493247 469.09 44.911 544.823
3.937 5611.91 227.8 8.106 227.7 12.0 5.18 3.56%Sand-Slime Tailing 0.047 93.3 0.20 0.00 0.20 0 1.48 336.474 4676.99 390.92 1161 3.56% 1.8 47% 0.73 0.00 0.73 0 0.99 0.30 1.05 1.0 0.060 ##### 558.33 1.000 16.66 0.97 1.14 0.60 1.81 1.0 0.024 1.12 437.65 1.000 102.87 59.77 2 1.477644 336.58 32.225 390.923
4.101 5611.75 218.4 6.483 218.4 6.5 2.83 2.97%Sand-Slime Tailing 0.047 93.3 0.20 0.00 0.20 0 1.46 319.444 4440.28 371.08 1072 2.97% 1.7 47% 0.74 0.00 0.74 0 0.99 0.30 1.05 1.0 0.060 ##### 531.53 1.000 16.73 0.97 1.11 0.60 1.78 1.0 0.024 1.07 397.43 1.000 99.05 57.89 2 1.462791 319.5 30.589 371.085
4.265 5611.58 214.9 5.761 214.9 3.0 1.32 2.68%Sand-Slime Tailing 0.047 93.3 0.21 0.00 0.21 0 1.45 311.252 4326.41 361.53 1016 2.68% 1.7 47% 0.74 0.00 0.74 0 0.99 0.30 1.04 1.0 0.060 ##### 518.63 1.000 16.79 0.97 1.10 0.60 1.75 1.0 0.024 1.05 378.28 1.000 95.50 56.15 2 1.448628 311.28 29.802 361.533
4.429 5611.42 175.0 4.480 175.0 2.3 0.98 2.56%Sand-Slime Tailing 0.047 93.3 0.22 0.00 0.22 0 1.44 251.142 3490.88 291.71 798 2.56% 1.7 47% 0.75 0.00 0.75 0 0.99 0.30 1.04 1.0 0.059 ##### 424.32 1.000 16.86 0.97 0.99 0.60 1.73 1.0 0.025 1.05 307.64 1.000 92.20 54.53 2 1.435098 251.16 24.046 291.710
4.593 5611.26 150.8 3.824 150.8 1.6 0.68 2.54%Sand-Slime Tailing 0.047 93.3 0.23 0.00 0.23 0 1.43 215.630 2997.26 250.46 665 2.54% 1.7 47% 0.76 0.00 0.76 0 0.98 0.30 1.04 1.0 0.059 ##### 368.60 1.000 16.93 0.97 0.91 0.60 1.71 1.0 0.025 1.07 268.21 1.000 89.12 53.02 2 1.42972 215.64 20.646 250.458
4.757 5611.09 121.0 2.453 121.0 1.6 0.71 2.03%Sand Tailings 0.051 102.8 0.24 0.00 0.24 0 1.50 181.995 2529.74 211.39 514 2.03% 1.7 18% 0.77 0.00 0.77 0 0.98 0.30 1.03 1.0 0.059 76.13 287.53 1.000 17.00 0.97 0.84 0.60 1.68 1.0 0.025 1.04 220.27 1.000 85.96 51.48 2 1.504592 182.01 17.426 211.395
4.921 5610.93 111.4 1.755 111.4 0.9 0.40 1.57%Sand Tailings 0.051 102.8 0.24 0.00 0.24 0 1.52 169.758 2359.64 197.17 457 1.58% 1.6 18% 0.78 0.00 0.78 0 0.98 0.25 1.03 1.0 0.058 72.50 269.67 1.000 17.14 0.97 0.81 0.60 1.66 1.0 0.026 1.00 197.17 1.000 83.01 50.08 2 1.523449 169.77 16.253 197.174
5.085 5610.76 105.9 2.102 105.9 0.1 0.06 1.99%Sand Tailings 0.051 102.8 0.25 0.00 0.25 0 1.53 161.916 2250.64 188.06 419 1.99% 1.7 18% 0.78 0.00 0.78 0 0.98 0.23 1.02 1.0 0.058 70.17 258.22 1.000 17.25 0.97 0.79 0.60 1.63 1.0 0.026 1.06 200.17 1.000 80.26 48.75 2 1.529534 161.92 15.502 188.058
5.249 5610.60 102.9 2.378 102.9 -1.0 -0.44 2.31%Sand-Slime Tailing 0.047 93.3 0.26 0.00 0.26 0 1.53 157.250 2185.78 182.63 396 2.32% 1.8 47% 0.79 0.00 0.79 0 0.98 0.22 1.02 1.0 0.058 94.35 276.98 1.000 17.32 0.97 0.78 0.61 1.60 1.0 0.027 1.11 203.34 1.000 77.93 47.62 2 1.52774 157.24 15.054 182.626
5.413 5610.44 102.4 2.370 102.4 -0.5 -0.23 2.31%Sand-Slime Tailing 0.047 93.3 0.27 0.00 0.27 0 1.52 155.399 2160.05 180.48 382 2.32% 1.8 47% 0.80 0.00 0.80 0 0.98 0.21 1.02 1.0 0.058 93.60 274.08 1.000 17.38 0.97 0.78 0.61 1.57 1.0 0.027 1.12 202.03 1.000 75.73 46.55 2 1.517569 155.39 14.877 180.481
5.577 5610.27 101.3 2.366 101.3 -0.4 -0.15 2.34%Sand-Slime Tailing 0.047 93.3 0.27 0.00 0.27 0 1.51 152.916 2125.53 177.60 368 2.34% 1.8 47% 0.81 0.00 0.81 0 0.98 0.21 1.01 1.0 0.057 92.59 270.19 1.000 17.44 0.96 0.77 0.62 1.55 1.0 0.027 1.13 200.40 1.000 73.65 45.54 2 1.509532 152.91 14.64 177.598
5.741 5610.11 96.2 2.597 96.2 -1.0 -0.43 2.70%Sand-Slime Tailing 0.047 93.3 0.28 0.00 0.28 0 1.52 145.768 2026.18 169.29 339 2.71% 1.9 47% 0.82 0.00 0.82 0 0.98 0.19 1.01 1.0 0.057 89.67 258.96 1.000 17.50 0.96 0.75 0.62 1.52 1.0 0.028 1.19 201.39 1.000 71.68 44.59 2 1.515261 145.76 13.955 169.290
5.905 5609.94 86.9 2.414 86.9 -0.9 -0.40 2.78%Sand-Slime Tailing 0.047 93.3 0.29 0.00 0.29 0 1.54 133.514 1855.84 155.06 298 2.79% 1.9 47% 0.82 0.00 0.82 0 0.98 0.17 1.01 1.0 0.057 84.68 239.74 1.000 17.57 0.96 0.72 0.64 1.48 1.0 0.029 1.23 190.57 1.000 69.82 43.69 2 1.53676 133.5 12.782 155.058
6.069 5609.78 80.9 2.523 80.9 -1.0 -0.43 3.12%Sand-Slime Tailing 0.047 93.3 0.30 0.00 0.30 0 1.55 125.130 1739.31 145.32 271 3.13% 2.0 47% 0.83 0.00 0.83 0 0.98 0.15 1.01 1.0 0.057 81.27 226.59 1.000 17.62 0.96 0.70 0.65 1.45 1.0 0.029 1.31 189.90 1.000 68.05 42.84 2 1.547112 125.12 11.979 145.320
6.234 5609.62 79.6 2.316 79.6 -1.1 -0.49 2.91%Sand-Slime Tailing 0.047 93.3 0.31 0.00 0.31 0 1.54 122.573 1703.76 142.35 260 2.92% 2.0 47% 0.84 0.00 0.84 0 0.98 0.15 1.00 1.0 0.057 80.23 222.57 1.000 17.67 0.96 0.69 0.66 1.43 1.0 0.030 1.29 182.97 1.000 66.38 42.02 2 1.539087 122.56 11.734 142.348
6.398 5609.45 76.6 2.134 76.6 -0.2 -0.10 2.79%Sand-Slime Tailing 0.047 93.3 0.31 0.00 0.31 0 1.54 117.783 1637.19 136.80 244 2.80% 2.0 47% 0.85 0.00 0.85 0 0.97 0.14 1.00 1.0 0.056 78.28 215.07 1.000 17.71 0.96 0.68 0.66 1.41 1.0 0.030 1.28 175.75 1.000 64.78 41.25 2 1.538242 117.78 11.276 136.795
6.562 5609.29 57.1 1.783 57.1 -0.0 -0.01 3.12%Sand-Slime Tailing 0.047 93.3 0.32 0.00 0.32 0 1.61 91.966 1278.33 106.81 177 3.14% 2.1 47% 0.85 0.00 0.85 0 0.97 0.11 1.00 1.0 0.056 67.76 174.57 0.459 8.14 0.96 0.60 0.70 1.34 1.0 0.032 1.47 156.93 0.439 27.80 17.97 2 1.611744 91.966 8.8048 106.813
6.726 5609.12 51.8 1.588 51.8 -0.1 -0.03 3.07%Sand-Slime Tailing 0.047 93.3 0.33 0.00 0.33 0 1.62 84.096 1168.93 97.67 157 3.09% 2.1 47% 0.86 0.00 0.86 0 0.97 0.10 1.00 1.0 0.056 64.56 162.23 0.341 6.07 0.96 0.57 0.71 1.32 1.0 0.032 1.52 148.18 0.383 23.65 14.86 2 1.624415 84.095 8.0513 97.672
6.890 5608.96 49.7 1.224 49.7 -0.8 -0.33 2.46%Sand-Slime Tailing 0.047 93.3 0.34 0.00 0.34 0 1.62 80.549 1119.63 93.54 147 2.48% 2.1 47% 0.87 0.00 0.87 0 0.97 0.10 1.00 1.0 0.056 63.11 156.65 0.305 5.45 0.96 0.56 0.72 1.30 1.0 0.033 1.41 131.92 0.294 17.74 11.59 2 1.620049 80.541 7.711 93.544
7.054 5608.80 56.3 1.510 56.4 -0.3 -0.13 2.68%Sand-Slime Tailing 0.047 93.3 0.34 0.00 0.34 0 1.57 88.530 1230.57 102.82 163 2.70% 2.1 47% 0.88 0.00 0.88 0 0.97 0.11 1.00 1.0 0.056 66.36 169.18 0.399 7.14 0.96 0.59 0.71 1.31 1.0 0.032 1.41 145.18 0.365 21.55 14.34 2 1.571078 88.527 8.4756 102.819
7.218 5608.63 68.1 2.477 68.1 7.0 3.01 3.64%Slime Tailings 0.041 82.7 0.35 0.00 0.35 0 1.51 102.716 1427.76 119.37 193 3.66% 2.1 71% 0.88 0.00 0.88 0 0.97 0.12 1.00 1.0 0.056 71.66 191.03 0.781 13.98 0.96 0.63 0.68 1.33 1.0 0.032 1.53 182.92 1.000 57.98 35.98 2 1.509204 102.78 9.8403 119.375
7.382 5608.47 66.2 2.994 66.2 1.5 0.65 4.52%Slime Tailings 0.041 82.7 0.36 0.00 0.36 0 1.51 99.683 1385.59 115.79 184 4.55% 2.2 71% 0.89 0.00 0.89 0 0.97 0.12 1.00 1.0 0.056 70.41 186.20 0.655 11.75 0.96 0.62 0.69 1.31 1.0 0.032 1.75 202.06 1.000 56.91 34.33 2 1.505326 99.697 9.545 115.792
7.546 5608.30 143.2 1.935 143.2 2.8 1.21 1.35%Sand Tailings 0.051 102.8 0.37 0.00 0.37 0 1.30 186.431 2591.40 216.56 391 1.35% 1.6 18% 0.90 0.00 0.90 0 0.97 0.30 0.99 1.0 0.055 77.45 294.01 1.000 18.12 0.96 0.85 0.60 1.41 1.0 0.030 1.00 216.56 1.000 55.62 36.87 2 1.301895 186.45 17.851 216.555
7.710 5608.14 161.7 1.640 161.7 -0.1 -0.04 1.01%Sand Tailings 0.051 102.8 0.37 0.00 0.37 0 1.27 204.599 2843.92 237.63 431 1.02% 1.5 18% 0.91 0.00 0.91 0 0.97 0.30 0.98 1.0 0.055 82.84 320.47 1.000 18.19 0.96 0.89 0.60 1.40 1.0 0.030 1.00 237.63 1.000 54.38 36.29 2 1.265533 204.6 19.588 237.628
7.874 5607.98 86.8 1.774 86.8 4.1 1.79 2.04%Sand-Slime Tailing 0.047 93.3 0.38 0.00 0.38 0 1.40 121.855 1693.79 141.57 226 2.05% 1.9 47% 0.91 0.00 0.91 0 0.96 0.15 0.99 1.0 0.055 79.95 221.52 1.000 18.09 0.96 0.69 0.66 1.32 1.0 0.032 1.18 167.67 1.000 53.32 35.70 2 1.404187 121.89 11.67 141.570
8.038 5607.81 50.5 1.194 50.5 1.7 0.75 2.36%Sand-Slime Tailing 0.047 93.3 0.39 0.00 0.39 0 1.52 76.535 1063.84 88.91 129 2.38% 2.1 47% 0.92 0.00 0.92 0 0.96 0.10 0.99 1.0 0.055 61.48 150.39 0.273 4.93 0.96 0.54 0.73 1.24 1.0 0.034 1.45 128.98 0.280 14.62 9.78 2 1.515245 76.551 7.329 88.910
8.202 5607.65 34.7 0.878 34.7 0.9 0.37 2.53%Sand-Slime Tailing 0.047 93.3 0.40 0.00 0.40 0 1.58 54.878 762.80 63.75 86 2.56% 2.2 47% 0.93 0.00 0.93 0 0.96 0.08 0.99 1.0 0.055 52.66 116.41 0.172 3.11 0.96 0.46 0.77 1.20 1.0 0.035 1.76 112.27 0.212 10.86 6.98 2 1.581493 54.886 5.2548 63.747
8.366 5607.48 25.8 0.664 25.8 0.5 0.20 2.58%Sand-Slime Tailing 0.047 93.3 0.40 0.00 0.40 0 1.63 41.903 582.45 48.67 63 2.62% 2.3 47% 0.94 0.00 0.94 0 0.96 0.07 0.99 1.0 0.055 47.37 96.05 0.136 2.46 0.96 0.40 0.80 1.16 1.0 0.036 2.09 101.59 0.178 8.94 5.70 2 1.625416 41.908 4.0123 48.673
8.530 5607.32 31.8 0.573 31.8 2.8 1.21 1.80%Sand-Slime Tailing 0.047 93.3 0.41 0.00 0.41 0 1.57 49.800 692.22 57.87 76 1.83% 2.2 47% 0.95 0.00 0.95 0 0.96 0.08 0.99 1.0 0.055 50.60 108.47 0.157 2.85 0.96 0.44 0.78 1.18 1.0 0.036 1.60 92.72 0.154 7.62 5.23 2 1.568016 49.827 4.7705 57.872
8.694 5607.16 34.8 0.413 34.8 2.3 1.01 1.19%Sand-Slime Tailing 0.047 93.3 0.42 0.00 0.42 0 1.54 53.460 743.09 62.12 82 1.20% 2.0 47% 0.95 0.00 0.95 0 0.96 0.08 0.99 1.0 0.055 52.09 114.20 0.168 3.05 0.96 0.46 0.77 1.18 1.0 0.036 1.34 83.09 0.133 6.48 4.76 2 1.535318 53.482 5.1204 62.116
8.858 5606.99 33.7 0.343 33.7 0.9 0.37 1.02%Sand-Slime Tailing 0.047 93.3 0.43 0.00 0.43 0 1.53 51.481 715.59 59.80 78 1.03% 2.0 47% 0.96 0.00 0.96 0 0.96 0.08 0.99 1.0 0.055 51.27 111.08 0.162 2.95 0.96 0.45 0.78 1.17 1.0 0.036 1.30 77.98 0.124 5.92 4.43 2 1.526724 51.489 4.9296 59.802
9.022 5606.83 29.3 0.358 29.3 0.1 0.05 1.22%Sand-Slime Tailing 0.047 93.3 0.44 0.00 0.44 0 1.54 44.964 624.99 52.22 66 1.24% 2.1 47% 0.97 0.00 0.97 0 0.96 0.07 0.99 1.0 0.055 48.62 100.84 0.144 2.62 0.96 0.42 0.79 1.15 1.0 0.037 1.47 76.82 0.122 5.73 4.18 2 1.537215 44.965 4.3049 52.224
9.186 5606.66 20.9 0.342 20.9 -0.3 -0.13 1.64%Sand-Slime Tailing 0.047 93.3 0.44 0.00 0.44 0 1.58 32.960 458.14 38.28 46 1.67% 2.3 47% 0.98 0.00 0.98 0 0.96 0.06 0.99 1.0 0.055 43.73 82.00 0.115 2.10 0.96 0.36 0.80 1.14 1.0 0.037 1.99 76.07 0.121 5.57 3.84 2 1.577766 32.957 3.1553 38.277
9.350 5606.50 12.6 0.327 12.6 -0.6 -0.25 2.59%Slime Tailings 0.041 82.7 0.45 0.00 0.45 0 1.64 20.679 287.43 24.01 27 2.69% 2.6 71% 0.98 0.00 0.98 0 0.96 0.06 0.99 1.0 0.055 38.45 62.46 0.091 1.65 0.96 0.28 0.80 1.14 1.0 0.037 3.47 83.20 0.134 6.07 3.86 2 1.639861 20.673 1.9792 24.010
9.514 5606.34 12.0 0.251 12.0 -0.7 -0.29 2.10%Slime Tailings 0.041 82.7 0.46 0.00 0.46 0 1.63 19.500 271.05 22.64 25 2.18% 2.6 71% 0.99 0.00 0.99 0 0.95 0.05 0.99 1.0 0.055 37.97 60.61 0.089 1.62 0.96 0.27 0.80 1.14 1.0 0.037 3.27 74.01 0.118 5.27 3.44 2 1.630423 19.493 1.8663 22.640
9.678 5606.17 14.1 0.216 14.1 -0.6 -0.26 1.53%Sand-Slime Tailing 0.047 93.3 0.46 0.00 0.46 0 1.59 22.445 311.98 26.06 29 1.58% 2.5 47% 1.00 0.00 1.00 0 0.95 0.06 0.99 1.0 0.055 39.44 65.50 0.094 1.72 0.96 0.29 0.80 1.13 1.0 0.037 2.54 66.27 0.107 4.72 3.22 2 1.588461 22.439 2.1483 26.061
9.842 5606.01 23.2 0.158 23.2 -0.3 -0.12 0.68%Sand-Slime Tailing 0.047 93.3 0.47 0.00 0.47 0 1.50 34.822 484.03 40.44 48 0.70% 2.1 47% 1.00 0.00 1.00 0 0.95 0.07 0.99 1.0 0.054 44.48 84.93 0.120 2.19 0.95 0.37 0.80 1.13 1.0 0.037 1.42 57.38 0.098 4.23 3.21 2 1.502248 34.819 3.3336 40.441
10.006 5605.84 22.6 0.274 22.6 -0.3 -0.12 1.21%Sand-Slime Tailing 0.047 93.3 0.48 0.00 0.48 0 1.49 33.696 468.37 39.13 46 1.24% 2.2 47% 1.01 0.00 1.01 0 0.95 0.06 0.99 1.0 0.054 44.03 83.16 0.117 2.15 0.95 0.36 0.80 1.12 1.0 0.037 1.75 68.53 0.110 4.69 3.42 2 1.490966 33.693 3.2258 39.133
10.170 5605.68 11.1 0.368 11.1 -0.5 -0.23 3.32%Slime Tailings 0.041 82.7 0.49 0.00 0.49 0 1.56 17.349 241.15 20.14 22 3.47% 2.8 71% 1.02 0.00 1.02 0 0.95 0.05 0.99 1.0 0.054 37.10 57.25 0.085 1.56 0.95 0.26 0.80 1.12 1.0 0.038 4.49 90.38 0.149 6.26 3.91 2 1.562976 17.344 1.6605 20.144
10.335 5605.52 10.3 0.383 10.3 0.3 0.12 3.73%Slime Tailings 0.041 82.7 0.49 0.00 0.49 0 1.55 15.894 220.93 18.46 20 3.91% 2.8 71% 1.03 0.00 1.03 0 0.95 0.05 0.99 1.0 0.054 36.52 54.98 0.082 1.52 0.95 0.25 0.80 1.12 1.0 0.038 5.04 92.99 0.155 6.43 3.97 2 1.546147 15.897 1.522 18.464
10.499 5605.35 8.6 0.299 8.6 1.8 0.79 3.46%Slime Tailings 0.041 82.7 0.50 0.00 0.50 0 1.53 13.186 183.29 15.34 16 3.68% 2.9 71% 1.03 0.00 1.03 0 0.95 0.05 0.99 1.0 0.054 35.43 50.76 0.078 1.44 0.95 0.23 0.80 1.11 1.0 0.038 5.50 84.30 0.136 5.56 3.50 2 1.529724 13.204 1.2641 15.335
10.663 5605.19 11.2 0.222 11.2 2.1 0.91 1.98%Slime Tailings 0.041 82.7 0.51 0.00 0.51 0 1.51 16.923 235.23 19.68 21 2.08% 2.6 71% 1.04 0.00 1.04 0 0.95 0.05 0.99 1.0 0.054 36.94 56.62 0.084 1.55 0.95 0.26 0.80 1.11 1.0 0.038 3.58 70.44 0.113 4.55 3.05 2 1.513694 16.943 1.6221 19.678
10.827 5605.02 22.3 0.182 22.3 1.3 0.55 0.82%Sand-Slime Tailing 0.047 93.3 0.51 0.00 0.51 0 1.43 31.828 442.41 36.98 42 0.84% 2.2 47% 1.05 0.00 1.05 0 0.95 0.06 0.99 1.0 0.054 43.27 80.25 0.113 2.09 0.95 0.35 0.80 1.11 1.0 0.038 1.59 58.90 0.099 3.95 3.02 2 1.428543 31.839 3.0483 36.979
10.991 5604.86 26.2 0.185 26.2 0.6 0.25 0.71%Sand-Slime Tailing 0.047 93.3 0.52 0.00 0.52 0 1.40 36.562 508.21 42.47 49 0.72% 2.1 47% 1.05 0.00 1.05 0 0.94 0.07 0.99 1.0 0.054 45.20 87.67 0.123 2.29 0.95 0.38 0.80 1.11 1.0 0.038 1.42 60.27 0.100 3.94 3.12 2 1.397102 36.567 3.5009 42.471
11.155 5604.70 24.7 0.273 24.7 0.3 0.14 1.10%Sand-Slime Tailing 0.047 93.3 0.53 0.00 0.53 0 1.39 34.382 477.91 39.94 46 1.13% 2.2 47% 1.06 0.00 1.06 0 0.94 0.06 0.99 1.0 0.054 44.31 84.24 0.119 2.20 0.95 0.36 0.80 1.10 1.0 0.038 1.70 67.83 0.109 4.22 3.21 2 1.390862 34.385 3.292 39.936
11.319 5604.53 17.5 0.349 17.5 -0.1 -0.05 1.99%Sand-Slime Tailing 0.047 93.3 0.54 0.00 0.54 0 1.41 24.763 344.20 28.76 32 2.06% 2.5 47% 1.07 0.00 1.07 0 0.94 0.06 0.99 1.0 0.054 40.39 69.15 0.099 1.83 0.95 0.31 0.80 1.10 1.0 0.038 2.75 79.07 0.126 4.81 3.32 2 1.413397 24.762 2.3707 28.759
11.483 5604.37 12.5 0.390 12.5 -0.2 -0.07 3.12%Slime Tailings 0.057 113.1 0.55 0.00 0.55 1 1.43 17.845 248.04 20.72 22 3.27% 2.7 71% 1.08 0.00 1.08 0 0.94 0.05 0.99 1.0 0.054 37.30 58.03 0.086 1.59 0.95 0.26 0.80 1.10 1.0 0.038 4.35 90.07 0.148 5.57 3.58 2 1.428725 17.843 1.7083 20.724
11.647 5604.20 12.1 0.339 12.1 2.0 0.88 2.79%Slime Tailings 0.057 113.1 0.56 0.01 0.55 1 1.42 17.214 239.27 20.01 21 2.93% 2.7 71% 1.09 0.00 1.09 0 0.94 0.05 0.99 1.0 0.054 37.06 57.07 0.085 1.58 0.95 0.26 0.80 1.09 1.0 0.038 4.22 84.43 0.136 5.08 3.33 2 1.420263 17.231 1.6497 20.013
11.811 5604.04 10.7 0.328 10.7 10.4 4.49 3.06%Slime Tailings 0.057 113.1 0.57 0.01 0.55 1 1.41 15.051 209.21 17.59 18 3.23% 2.8 71% 1.10 0.00 1.10 0 0.94 0.05 0.99 1.0 0.054 36.21 53.80 0.081 1.52 0.95 0.24 0.80 1.09 1.0 0.038 4.81 84.62 0.136 5.06 3.29 2 1.411915 15.142 1.4497 17.587
11.975 5603.88 17.0 0.353 16.9 18.5 8.03 2.08%Sand-Slime Tailing 0.059 119.0 0.57 0.02 0.56 1 1.38 23.239 323.02 27.18 29 2.15% 2.5 47% 1.11 0.00 1.11 0 0.94 0.06 0.99 1.0 0.053 39.83 67.01 0.096 1.80 0.95 0.30 0.80 1.09 1.0 0.038 2.95 80.09 0.128 4.70 3.25 2 1.379148 23.398 2.2401 27.175
Scaling Factor for stress ration, rm
Volumetric Strain Ratio for Site-Specific Design Ear
Equiv. Number of Uniform Strain Cycles, N
Youd et al. (2001)
CSR
M=7.5,
s'v=1atm
0.15
Earthquake Moment Magnitude, M: 5.5
Magnitude Scaling Factor, MSF:
Equil Pore
Pressure at time of
Conditions at t1 Liquefaction Triggering Analyses Idriss & Boulanger (2008)Equil
Pore
Pressure
at t1CN qc1 qc1 qc1N
Normalized Cone
Penetration Resistance, Qt
Normalized Friction
Ratio, Fr (%)
Total Stress
at t1 Liquefiable?
1=Yes
2=No
Cyclic Stress RatioEffective
Stress at
t1
Saturated
at t1
Idriss & Boulanger (2008)
Idriss and Boulanger (2008)
Max. Horiz. Acceleration, Amax/g:
Earthquake Moment Magnitude, M:
Magnitude Scaling Factor, MSF:
WHITE MESA TAILINGS REPOSITORY LIQUEFACTION AND SEISMIC SETTLEMENT ANALYSES - 2W6-S Elev. at
Top of Layer (ft)
Elev. At
Midpoint of Layer (ft)
Bottom
of Layer (ft)
Thickness of Layer (ft)
CSR
M=7.5,
s'v=1atm
Kc
High Compaction Layer
Platform/Random Fill Layer
Pw (u2)Pw (u2)
2013 CPT Data from ConeTec CPT Data Interpretations
fs/qt
Material Type (as determined
by fines
Unit Weight Unit Weight
Total Stress
at time of CPT
Depth
at time of CPT Elevation qt fs qc
Effective Stress at
time of CPT
Saturated
at time of CPT
Type Index, Ic FC
Youd, et al (2001)
Max. Horiz. Acceleration, Amax/g:
Stress at
Bottom of Layer (tsf)
Stress at
Midpoint of Layer (tsf)FINAL COVER
Erosion Protection Layer
Water Storage/Rooting Zone Layer
qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Equil Pore
Pressure at Midpoint of Layer (tsf)
Unit Weight (tcf)
Unit Weight (pcf)
Stress at
Bottom of Layer (tsf)
Stress at
Midpoint of Layer (tsf)
Pressure
at Bottom of Layer (tsf)
Cyclic Resistance Ratio
FoS
Cyclic Stress Ratio
FoS
∆qc1n qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Liquef_SeismicSettle_30Aug2015.xls Page 14 of 36
Energy Fuels Resources (USA) Inc.
White Mesa MillLiquefaction Analyses
Data File: 13-52106_SP2W6-S-BSC-CPT 5604.40 Water surface elevation during CPT investigation (ft5615.85 Ground Surface Elevation at time of CPT (ft amsl)Location: White Mesa 2013 CPT Investigation 0.15 5604.40 Water surface elevation at t0 (ft amsl)5625.41 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl)
..\..\..\6.2.3 Field Data\2013 Field Investigation\Conetec Dat 5.5 5588.59 Water surface elevation at t1 (ft amsl) 0.50 Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after pla ###### 5625.16 5624.91 0.50 0.055 110 0.028 0.014 0.00 0.00 0.028 0.014
Tailings Sands 1.69 5583.59 Water surface elevation at t2 (ft amsl)3.50 Thickness of Water Storage/Rooting Zone (ft) ###### 5623.16 5621.41 3.50 0.054 107 0.215 0.121 0.00 0.00 0.215 0.121
Tailings Sand-Slimes 4.00 Thickness of High Compaction Layer (ft)###### 5619.41 5617.41 4.00 0.060 120 0.454 0.334 0.00 0.00 0.454 0.334
Tailings Slimes 1.44 1.56 Thickness of Random/Platform Fill on on top of existing interim cover (ft) ###### 5616.63 5615.85 1.56 0.050 101 0.533 0.493 0.00 0.00 0.533 0.493
Interim Cover 0.47 1065.26 Additional Stress due to Final Cover Placement, ΔσFC (psf)
Cells Requiring User Input/Manipulation 2.21 2.21 7.51 5583.59 Elevation of bottom of tailings (liner) (ft amsl)
rd Cσ Kσ Ka rd Dr f Kσ Ka Avg CN qc1 qc1 qc1N
(ft) (ft amsl) TSF TSF TSF (ft) PSI (%) (tcf) (pcf) (tsf)(tsf)(tsf) 1=Yes TSF MPa % (tsf)(tsf)(tsf) 1=Yes FoS TSF MPa
0=No 0=No
Scaling Factor for stress ration, rm
Volumetric Strain Ratio for Site-Specific Design Ear
Equiv. Number of Uniform Strain Cycles, N
Youd et al. (2001)
CSR
M=7.5,
s'v=1atm
0.15
Earthquake Moment Magnitude, M: 5.5
Magnitude Scaling Factor, MSF:
Equil Pore
Pressure at time of
Conditions at t1 Liquefaction Triggering Analyses Idriss & Boulanger (2008)Equil
Pore
Pressure
at t1CN qc1 qc1 qc1N
Normalized Cone
Penetration Resistance, Qt
Normalized Friction
Ratio, Fr (%)
Total Stress
at t1 Liquefiable?
1=Yes
2=No
Cyclic Stress RatioEffective
Stress at
t1
Saturated
at t1
Idriss & Boulanger (2008)
Idriss and Boulanger (2008)
Max. Horiz. Acceleration, Amax/g:
Earthquake Moment Magnitude, M:
Magnitude Scaling Factor, MSF:
WHITE MESA TAILINGS REPOSITORY LIQUEFACTION AND SEISMIC SETTLEMENT ANALYSES - 2W6-S Elev. at
Top of Layer (ft)
Elev. At
Midpoint of Layer (ft)
Bottom
of Layer (ft)
Thickness of Layer (ft)
CSR
M=7.5,
s'v=1atm
Kc
High Compaction Layer
Platform/Random Fill Layer
Pw (u2)Pw (u2)
2013 CPT Data from ConeTec CPT Data Interpretations
fs/qt
Material Type (as determined
by fines
Unit Weight Unit Weight
Total Stress
at time of CPT
Depth
at time of CPT Elevation qt fs qc
Effective Stress at
time of CPT
Saturated
at time of CPT
Type Index, Ic FC
Youd, et al (2001)
Max. Horiz. Acceleration, Amax/g:
Stress at
Bottom of Layer (tsf)
Stress at
Midpoint of Layer (tsf)FINAL COVER
Erosion Protection Layer
Water Storage/Rooting Zone Layer
qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Equil Pore
Pressure at Midpoint of Layer (tsf)
Unit Weight (tcf)
Unit Weight (pcf)
Stress at
Bottom of Layer (tsf)
Stress at
Midpoint of Layer (tsf)
Pressure
at Bottom of Layer (tsf)
Cyclic Resistance Ratio
FoS
Cyclic Stress Ratio
FoS
∆qc1n qc1n-cs
(CRR)
M=7.5,
s'v=1atm
12.139 5603.71 12.2 0.338 12.1 8.3 3.58 2.77%Slime Tailings 0.057 113.1 0.58 0.02 0.56 1 1.39 16.931 235.34 19.75 21 2.91% 2.7 71% 1.12 0.00 1.12 0 0.94 0.05 0.99 1.0 0.053 36.96 56.71 0.084 1.58 0.95 0.26 0.80 1.09 1.0 0.038 4.26 84.15 0.135 4.95 3.26 2 1.39462 17.003 1.6278 19.748
12.303 5603.55 8.8 0.266 8.8 6.5 2.80 3.02%Slime Tailings 0.057 113.1 0.59 0.03 0.57 1 1.39 12.161 169.03 14.19 14 3.24% 2.9 71% 1.13 0.00 1.13 0 0.94 0.05 0.99 1.0 0.053 35.03 49.22 0.077 1.44 0.95 0.22 0.80 1.09 1.0 0.038 5.55 78.80 0.126 4.56 3.00 2 1.38661 12.217 1.1696 14.189
12.467 5603.38 5.7 0.163 5.7 9.4 4.08 2.86%Slime Tailings 0.057 113.1 0.60 0.03 0.57 1 1.38 7.790 108.28 9.14 9 3.19% 3.1 71% 1.14 0.00 1.14 0 0.93 0.04 0.99 1.0 0.053 33.27 42.41 0.071 1.32 0.95 0.17 0.80 1.09 1.0 0.039 7.34 67.12 0.108 3.90 2.61 2 1.378705 7.8707 0.7535 9.141
12.631 5603.22 6.7 0.119 6.6 17.7 7.65 1.77%Slime Tailings 0.057 113.1 0.61 0.04 0.58 1 1.37 9.089 126.34 10.73 11 1.94% 2.9 71% 1.14 0.00 1.14 0 0.93 0.05 0.99 1.0 0.053 33.82 44.56 0.072 1.36 0.95 0.19 0.80 1.08 1.0 0.039 5.42 58.12 0.098 3.52 2.44 2 1.370901 9.2401 0.8846 10.732
12.795 5603.05 9.3 0.181 9.2 25.8 11.18 1.94%Slime Tailings 0.057 113.1 0.62 0.04 0.58 1 1.36 12.514 173.95 14.79 15 2.08% 2.8 71% 1.15 0.00 1.15 0 0.93 0.05 0.99 1.0 0.053 35.24 50.03 0.078 1.46 0.95 0.22 0.80 1.08 1.0 0.039 4.45 65.88 0.107 3.79 2.63 2 1.363197 12.734 1.2191 14.789
12.959 5602.89 8.3 0.182 8.2 18.0 7.82 2.18%Slime Tailings 0.057 113.1 0.63 0.05 0.58 1 1.36 11.157 155.08 13.13 13 2.36% 2.8 71% 1.16 0.00 1.16 0 0.93 0.05 0.99 1.0 0.053 34.66 47.80 0.075 1.42 0.95 0.21 0.80 1.08 1.0 0.039 5.12 67.20 0.108 3.82 2.62 2 1.355592 11.309 1.0827 13.135
13.123 5602.73 6.3 0.181 6.2 22.2 9.60 2.85%Slime Tailings 0.057 113.1 0.64 0.05 0.59 1 1.35 8.372 116.37 9.94 10 3.17% 3.0 71% 1.17 0.00 1.17 0 0.93 0.05 0.99 1.0 0.053 33.55 43.49 0.072 1.35 0.95 0.18 0.80 1.08 1.0 0.039 6.98 69.37 0.111 3.90 2.62 2 1.348082 8.558 0.8193 9.940
13.287 5602.56 5.9 0.160 5.6 56.5 24.47 2.70%Slime Tailings 0.057 113.1 0.65 0.06 0.59 1 1.34 7.468 103.80 9.22 9 3.03% 3.0 71% 1.18 0.00 1.18 0 0.93 0.04 0.99 1.0 0.053 33.30 42.52 0.071 1.34 0.95 0.18 0.80 1.08 1.0 0.039 7.21 66.51 0.107 3.74 2.54 2 1.340666 7.9402 0.7602 9.222
13.451 5602.40 5.0 0.142 4.6 62.6 27.11 2.87%Slime Tailings 0.057 113.1 0.66 0.06 0.60 1 1.33 6.080 84.51 7.67 7 3.31% 3.1 71% 1.19 0.00 1.19 0 0.93 0.04 0.99 1.0 0.053 32.76 40.42 0.069 1.31 0.95 0.16 0.80 1.08 1.0 0.039 8.42 64.56 0.105 3.64 2.47 2 1.333343 6.6009 0.632 7.666
13.615 5602.23 4.7 0.156 4.3 65.6 28.41 3.34%Slime Tailings 0.057 113.1 0.67 0.07 0.60 1 1.33 5.649 78.52 7.19 7 3.90% 3.2 71% 1.20 0.00 1.20 0 0.93 0.04 0.99 1.0 0.053 32.59 39.78 0.068 1.30 0.95 0.15 0.80 1.07 1.0 0.039 9.34 67.15 0.108 3.72 2.51 2 1.32611 6.192 0.5928 7.192
13.779 5602.07 5.0 0.155 4.5 70.8 30.68 3.12%Slime Tailings 0.057 113.1 0.68 0.07 0.60 1 1.32 5.962 82.87 7.60 7 3.62% 3.2 71% 1.21 0.00 1.21 0 0.92 0.04 0.99 1.0 0.053 32.73 40.34 0.069 1.31 0.95 0.16 0.80 1.07 1.0 0.039 8.78 66.76 0.108 3.68 2.49 2 1.318966 6.5446 0.6266 7.601
13.943 5601.91 5.3 0.171 4.9 65.5 28.40 3.21%Slime Tailings 0.057 113.1 0.69 0.08 0.61 1 1.31 6.441 89.54 8.10 8 3.69% 3.1 71% 1.22 0.00 1.22 0 0.92 0.04 0.98 1.0 0.053 32.91 41.01 0.069 1.32 0.95 0.16 0.80 1.07 1.0 0.039 8.51 68.96 0.111 3.75 2.54 2 1.31191 6.9782 0.6681 8.105
14.107 5601.74 5.7 0.161 5.3 66.6 28.87 2.81%Slime Tailings 0.057 113.1 0.70 0.08 0.61 1 1.30 6.929 96.32 8.68 8 3.20% 3.1 71% 1.23 0.00 1.23 0 0.92 0.04 0.98 1.0 0.052 33.11 41.79 0.070 1.34 0.94 0.17 0.80 1.07 1.0 0.039 7.72 67.00 0.108 3.64 2.49 2 1.304938 7.472 0.7154 8.678
14.271 5601.58 6.2 0.224 5.8 64.0 27.75 3.64%Slime Tailings 0.057 113.1 0.70 0.09 0.62 1 1.30 7.477 103.93 9.29 9 4.11% 3.1 71% 1.24 0.00 1.24 0 0.92 0.04 0.98 1.0 0.052 33.32 42.61 0.071 1.35 0.94 0.18 0.80 1.07 1.0 0.039 8.17 75.85 0.121 4.04 2.70 2 1.298051 7.9957 0.7655 9.287
14.436 5601.41 6.8 0.221 6.7 27.2 11.78 3.24%Slime Tailings 0.057 113.1 0.71 0.09 0.62 1 1.29 8.600 119.54 10.24 10 3.61% 3.0 71% 1.25 0.00 1.25 0 0.92 0.05 0.98 1.0 0.052 33.65 43.90 0.072 1.38 0.94 0.18 0.80 1.07 1.0 0.039 7.30 74.79 0.119 3.96 2.67 2 1.291246 8.8188 0.8443 10.242
14.600 5601.25 12.2 0.194 12.0 33.9 14.70 1.58%Sand-Slime Tailing 0.059 119.0 0.72 0.10 0.63 1 1.28 15.444 214.67 18.25 18 1.68% 2.6 47% 1.26 0.00 1.26 0 0.92 0.05 0.98 1.0 0.052 36.70 54.96 0.082 1.58 0.94 0.25 0.80 1.07 1.0 0.039 3.56 64.99 0.106 3.49 2.54 2 1.283752 15.715 1.5046 18.252
14.764 5601.09 17.1 0.255 17.0 12.7 5.52 1.49%Sand-Slime Tailing 0.059 119.0 0.73 0.10 0.63 1 1.27 21.529 299.25 25.12 26 1.56% 2.5 47% 1.27 0.00 1.27 0 0.92 0.06 0.98 1.0 0.052 39.11 64.23 0.093 1.79 0.94 0.29 0.80 1.06 1.0 0.039 2.74 68.85 0.110 3.63 2.71 2 1.265666 21.63 2.0708 25.121
14.928 5600.92 15.7 0.220 15.7 4.6 1.99 1.40%Sand-Slime Tailing 0.059 119.0 0.74 0.11 0.63 1 1.26 19.827 275.59 23.07 24 1.47% 2.5 47% 1.28 0.00 1.28 0 0.92 0.05 0.98 1.0 0.052 38.39 61.46 0.089 1.73 0.94 0.28 0.80 1.06 1.0 0.039 2.84 65.58 0.106 3.47 2.60 2 1.263662 19.863 1.9017 23.070
15.092 5600.76 10.8 0.225 10.8 8.1 3.49 2.08%Slime Tailings 0.057 113.1 0.75 0.11 0.64 1 1.26 13.623 189.36 15.90 16 2.23% 2.8 71% 1.29 0.00 1.29 0 0.91 0.05 0.98 1.0 0.052 35.62 51.52 0.079 1.52 0.94 0.23 0.80 1.06 1.0 0.039 4.46 70.87 0.113 3.67 2.60 2 1.262592 13.687 1.3104 15.896
15.256 5600.59 23.2 0.308 23.2 2.0 0.87 1.33%Sand-Slime Tailing 0.059 119.0 0.76 0.12 0.64 1 1.23 28.564 397.04 33.19 35 1.37% 2.4 47% 1.29 0.00 1.29 0 0.91 0.06 0.98 1.0 0.051 41.94 75.14 0.106 2.06 0.94 0.33 0.80 1.06 1.0 0.039 2.14 71.16 0.114 3.66 2.86 2 1.229629 28.58 2.7362 33.194
15.420 5600.43 16.2 0.412 16.2 0.7 0.28 2.55%Slime Tailings 0.057 113.1 0.77 0.12 0.65 1 1.24 20.096 279.34 23.35 24 2.68% 2.7 71% 1.30 0.00 1.30 0 0.91 0.05 0.98 1.0 0.052 38.22 61.56 0.090 1.74 0.94 0.28 0.80 1.06 1.0 0.039 3.75 87.44 0.142 4.55 3.15 2 1.243568 20.101 1.9245 23.346
15.584 5600.27 12.6 0.274 12.6 2.6 1.12 2.17%Slime Tailings 0.057 113.1 0.78 0.13 0.65 1 1.24 15.661 217.69 18.21 18 2.32% 2.7 71% 1.31 0.00 1.31 0 0.91 0.05 0.98 1.0 0.052 36.43 54.64 0.082 1.59 0.94 0.25 0.80 1.06 1.0 0.039 4.15 75.50 0.120 3.82 2.71 2 1.242925 15.681 1.5013 18.212
15.748 5600.10 10.3 0.241 10.2 8.8 3.82 2.34%Slime Tailings 0.057 113.1 0.79 0.13 0.66 1 1.24 12.652 175.86 14.77 14 2.54% 2.8 71% 1.32 0.00 1.32 0 0.91 0.05 0.98 1.0 0.051 35.23 50.01 0.077 1.51 0.94 0.22 0.80 1.06 1.0 0.039 4.99 73.70 0.117 3.71 2.61 2 1.236759 12.72 1.2178 14.774
15.912 5599.94 9.3 0.182 8.8 77.2 33.43 1.96%Slime Tailings 0.057 113.1 0.80 0.14 0.66 1 1.23 10.854 150.88 13.30 13 2.14% 2.8 71% 1.33 0.00 1.33 0 0.91 0.05 0.98 1.0 0.051 34.72 48.01 0.076 1.47 0.94 0.21 0.80 1.05 1.0 0.039 4.99 66.36 0.107 3.37 2.42 2 1.230662 11.447 1.096 13.295
16.076 5599.77 9.1 0.171 8.6 82.6 35.81 1.87%Slime Tailings 0.057 113.1 0.81 0.14 0.66 1 1.22 10.569 146.90 13.01 13 2.05% 2.8 71% 1.34 0.00 1.34 0 0.91 0.05 0.98 1.0 0.051 34.62 47.63 0.075 1.47 0.94 0.21 0.80 1.05 1.0 0.039 4.99 64.85 0.105 3.29 2.38 2 1.224633 11.2 1.0723 13.009
16.240 5599.61 10.3 0.119 9.8 84.2 36.48 1.15%Sand-Slime Tailing 0.059 119.0 0.82 0.15 0.67 1 1.22 11.912 165.58 14.58 14 1.25% 2.7 47% 1.35 0.00 1.35 0 0.91 0.05 0.98 1.0 0.051 35.41 49.99 0.077 1.51 0.94 0.22 0.80 1.05 1.0 0.039 3.76 54.85 0.095 2.96 2.24 2 1.217988 12.552 1.2017 14.578
16.404 5599.45 10.7 0.142 10.3 64.6 28.00 1.33%Sand-Slime Tailing 0.059 119.0 0.83 0.15 0.67 1 1.21 12.466 173.27 15.05 15 1.44% 2.7 47% 1.36 0.00 1.36 0 0.90 0.05 0.98 1.0 0.051 35.58 50.62 0.078 1.53 0.94 0.22 0.80 1.05 1.0 0.039 3.89 58.50 0.099 3.04 2.29 2 1.211425 12.954 1.2402 15.046
16.568 5599.28 9.7 0.148 9.1 90.7 39.29 1.52%Sand-Slime Tailing 0.059 119.0 0.84 0.16 0.68 1 1.20 11.013 153.08 13.58 13 1.67% 2.8 47% 1.37 0.00 1.37 0 0.90 0.05 0.98 1.0 0.051 35.07 48.65 0.076 1.49 0.94 0.21 0.80 1.05 1.0 0.039 4.46 60.55 0.101 3.09 2.29 2 1.204942 11.695 1.1197 13.583
16.732 5599.12 11.2 0.142 10.7 72.9 31.59 1.27%Sand-Slime Tailing 0.059 119.0 0.85 0.16 0.68 1 1.20 12.872 178.92 15.58 15 1.37% 2.7 47% 1.38 0.00 1.38 0 0.90 0.05 0.98 1.0 0.051 35.77 51.35 0.079 1.55 0.94 0.23 0.80 1.05 1.0 0.040 3.73 58.07 0.098 2.99 2.27 2 1.198538 13.418 1.2846 15.584
16.896 5598.95 11.8 0.171 11.3 78.1 33.86 1.45%Sand-Slime Tailing 0.059 119.0 0.86 0.17 0.69 1 1.19 13.484 187.43 16.34 16 1.56% 2.7 47% 1.39 0.00 1.39 0 0.90 0.05 0.98 1.0 0.051 36.03 52.37 0.080 1.57 0.94 0.23 0.80 1.05 1.0 0.040 3.80 62.13 0.102 3.10 2.33 2 1.19221 14.065 1.3466 16.336
17.060 5598.79 12.0 0.161 11.4 83.5 36.17 1.35%Sand-Slime Tailing 0.059 119.0 0.87 0.18 0.69 1 1.19 13.567 188.59 16.48 16 1.45% 2.7 47% 1.40 0.00 1.40 0 0.90 0.05 0.98 1.0 0.051 36.08 52.56 0.080 1.58 0.94 0.23 0.80 1.04 1.0 0.040 3.67 60.46 0.101 3.02 2.30 2 1.185959 14.185 1.3581 16.476
17.224 5598.63 12.8 0.164 12.3 73.7 31.95 1.28%Sand-Slime Tailing 0.059 119.0 0.88 0.18 0.70 1 1.18 14.547 202.20 17.53 17 1.38% 2.6 47% 1.41 0.00 1.41 0 0.90 0.05 0.97 1.0 0.051 36.45 53.97 0.081 1.61 0.94 0.24 0.80 1.04 1.0 0.040 3.44 60.21 0.100 3.00 2.30 2 1.179781 15.09 1.4447 17.526
17.388 5598.46 10.4 0.217 9.9 73.6 31.89 2.09%Slime Tailings 0.057 113.1 0.89 0.19 0.70 1 1.17 11.637 161.76 14.14 14 2.29% 2.8 71% 1.42 0.00 1.42 0 0.90 0.05 0.98 1.0 0.051 35.01 49.16 0.077 1.52 0.94 0.22 0.80 1.04 1.0 0.040 4.98 70.37 0.112 3.34 2.43 2 1.174304 12.177 1.1658 14.143
17.552 5598.30 9.6 0.305 9.0 98.4 42.63 3.19%Slime Tailings 0.057 113.1 0.90 0.19 0.71 1 1.17 10.462 145.41 12.98 12 3.52% 3.0 71% 1.43 0.00 1.43 0 0.90 0.05 0.98 1.0 0.051 34.61 47.59 0.075 1.49 0.94 0.21 0.80 1.04 1.0 0.040 6.35 82.50 0.132 3.91 2.70 2 1.168884 11.179 1.0703 12.984
17.716 5598.13 12.3 0.378 11.6 110.0 47.65 3.07%Slime Tailings 0.057 113.1 0.90 0.20 0.71 1 1.16 13.532 188.09 16.64 16 3.31% 2.9 71% 1.44 0.00 1.44 0 0.89 0.05 0.97 1.0 0.050 35.88 52.53 0.080 1.59 0.94 0.24 0.80 1.04 1.0 0.040 5.27 87.75 0.143 4.20 2.89 2 1.163521 14.33 1.372 16.644
17.880 5597.97 15.9 0.393 15.5 61.9 26.81 2.47%Slime Tailings 0.057 113.1 0.91 0.20 0.71 1 1.16 17.966 249.73 21.39 21 2.62% 2.7 71% 1.45 0.00 1.45 0 0.89 0.05 0.97 1.0 0.050 37.54 58.92 0.087 1.73 0.94 0.27 0.80 1.04 1.0 0.040 4.01 85.65 0.138 4.05 2.89 2 1.15763 18.413 1.7629 21.386
18.044 5597.81 13.0 0.378 12.5 74.4 32.24 2.91%Slime Tailings 0.057 113.1 0.92 0.21 0.72 1 1.15 14.435 200.65 17.39 17 3.13% 2.8 71% 1.46 0.00 1.46 0 0.89 0.05 0.97 1.0 0.050 36.14 53.53 0.081 1.61 0.94 0.24 0.80 1.04 1.0 0.040 5.00 87.01 0.141 4.11 2.86 2 1.152961 14.971 1.4333 17.387
18.208 5597.64 15.2 0.346 14.8 53.4 23.14 2.28%Sand-Slime Tailing 0.059 119.0 0.93 0.21 0.72 1 1.15 17.001 236.31 20.19 20 2.43% 2.7 47% 1.47 0.00 1.47 0 0.89 0.05 0.97 1.0 0.050 37.38 57.57 0.085 1.70 0.94 0.26 0.80 1.04 1.0 0.040 4.03 81.33 0.130 3.76 2.73 2 1.147167 17.384 1.6643 20.190
18.372 5597.48 20.1 0.278 20.0 22.1 9.56 1.38%Sand-Slime Tailing 0.059 119.0 0.94 0.22 0.73 1 1.13 22.670 315.11 26.51 26 1.45% 2.5 47% 1.48 0.00 1.48 0 0.89 0.06 0.97 1.0 0.050 39.60 66.11 0.095 1.90 0.93 0.30 0.80 1.03 1.0 0.040 2.63 69.61 0.111 3.20 2.55 2 1.134641 22.826 2.1854 26.511
18.537 5597.31 25.1 0.274 25.1 0.0 0.00 1.09%Sand-Slime Tailing 0.059 119.0 0.95 0.22 0.73 1 1.12 28.232 392.43 32.79 33 1.13% 2.3 47% 1.49 0.00 1.49 0 0.89 0.06 0.97 1.0 0.050 41.80 74.59 0.105 2.12 0.93 0.33 0.80 1.03 1.0 0.040 2.05 67.17 0.108 3.09 2.61 2 1.123003 28.232 2.703 32.790
18.701 5597.15 25.6 0.284 25.6 -1.5 -0.63 1.11%Sand-Slime Tailing 0.059 119.0 0.96 0.23 0.74 1 1.12 28.599 397.53 33.20 33 1.15% 2.3 47% 1.50 0.00 1.50 0 0.89 0.06 0.97 1.0 0.050 41.95 75.15 0.106 2.14 0.93 0.33 0.80 1.03 1.0 0.040 2.05 68.05 0.109 3.10 2.62 2 1.117594 28.589 2.7371 33.205
18.865 5596.99 26.1 0.274 26.0 4.6 1.98 1.05%Sand-Slime Tailing 0.059 119.0 0.97 0.23 0.74 1 1.11 28.952 402.43 33.66 34 1.09% 2.3 47% 1.50 0.00 1.50 0 0.89 0.06 0.97 1.0 0.049 42.11 75.77 0.107 2.16 0.93 0.33 0.80 1.03 1.0 0.040 1.99 66.98 0.108 3.05 2.61 2 1.112238 28.983 2.7749 33.662
19.029 5596.82 26.3 0.324 26.2 6.9 2.99 1.23%Sand-Slime Tailing 0.059 119.0 0.98 0.24 0.75 1 1.11 29.032 403.54 33.77 34 1.28% 2.4 47% 1.51 0.00 1.51 0 0.88 0.06 0.97 1.0 0.049 42.15 75.92 0.107 2.17 0.93 0.34 0.80 1.03 1.0 0.040 2.12 71.66 0.114 3.21 2.69 2 1.107245 29.08 2.7841 33.774
19.193 5596.66 19.7 0.359 19.6 11.6 5.03 1.82%Sand-Slime Tailing 0.059 119.0 0.99 0.24 0.75 1 1.11 21.744 302.25 25.35 25 1.92% 2.6 47% 1.52 0.00 1.52 0 0.88 0.06 0.97 1.0 0.049 39.19 64.54 0.093 1.88 0.93 0.29 0.80 1.03 1.0 0.040 3.10 78.57 0.125 3.49 2.69 2 1.109408 21.825 2.0895 25.348
19.357 5596.49 17.3 0.409 17.2 10.2 4.42 2.36%Sand-Slime Tailing 0.059 119.0 1.00 0.25 0.75 1 1.11 19.087 265.31 22.25 22 2.51% 2.7 47% 1.53 0.00 1.53 0 0.88 0.05 0.97 1.0 0.049 38.11 60.36 0.088 1.79 0.93 0.27 0.80 1.03 1.0 0.040 3.85 85.76 0.139 3.85 2.82 2 1.107144 19.158 1.8341 22.250
19.521 5596.33 21.7 0.317 21.6 11.8 5.13 1.46%Sand-Slime Tailing 0.059 119.0 1.01 0.25 0.76 1 1.10 23.745 330.06 27.67 27 1.53% 2.5 47% 1.54 0.00 1.54 0 0.88 0.06 0.97 1.0 0.049 40.01 67.68 0.097 1.97 0.93 0.30 0.80 1.03 1.0 0.040 2.63 72.87 0.116 3.20 2.58 2 1.09729 23.826 2.2811 27.673
19.685 5596.17 22.7 0.488 22.7 9.2 3.99 2.15%Sand-Slime Tailing 0.059 119.0 1.02 0.26 0.76 1 1.09 24.734 343.80 28.80 28 2.25% 2.6 47% 1.55 0.00 1.55 0 0.88 0.06 0.97 1.0 0.049 40.40 69.20 0.099 2.01 0.93 0.31 0.80 1.02 1.0 0.040 3.07 88.53 0.145 3.96 2.99 2 1.091531 24.797 2.374 28.800
19.849 5596.00 19.2 0.558 19.2 4.8 2.06 2.91%Slime Tailings 0.057 113.1 1.03 0.26 0.77 1 1.09 20.883 290.27 24.29 24 3.07% 2.7 71% 1.56 0.00 1.56 0 0.88 0.06 0.97 1.0 0.049 38.55 62.84 0.091 1.86 0.93 0.28 0.80 1.02 1.0 0.040 4.03 97.81 0.167 4.56 3.21 2 1.09049 20.915 2.0024 24.292
20.013 5595.84 17.8 0.580 17.8 9.9 4.27 3.26%Slime Tailings 0.057 113.1 1.04 0.27 0.77 1 1.09 19.301 268.29 22.49 22 3.46% 2.8 71% 1.57 0.00 1.57 0 0.88 0.05 0.97 1.0 0.049 37.92 60.42 0.088 1.80 0.93 0.27 0.80 1.02 1.0 0.040 4.49 101.07 0.176 4.78 3.29 2 1.087393 19.368 1.8543 22.495
20.177 5595.67 16.5 0.428 16.5 3.3 1.42 2.59%Slime Tailings 0.057 113.1 1.05 0.27 0.78 1 1.08 17.865 248.32 20.77 20 2.77% 2.7 71% 1.58 0.00 1.58 0 0.87 0.05 0.97 1.0 0.049 37.32 58.10 0.086 1.75 0.93 0.26 0.80 1.02 1.0 0.040 4.25 88.39 0.144 3.90 2.82 2 1.084035 17.887 1.7125 20.775
20.341 5595.51 16.1 0.364 15.8 46.6 20.19 2.26%Sand-Slime Tailing 0.059 119.0 1.06 0.28 0.78 1 1.08 17.027 236.67 20.14 19 2.42% 2.7 47% 1.59 0.00 1.59 0 0.87 0.05 0.97 1.0 0.049 37.36 57.50 0.085 1.74 0.93 0.26 0.80 1.02 1.0 0.040 4.08 82.25 0.132 3.54 2.64 2 1.078998 17.34 1.6602 20.140
20.505 5595.35 17.0 0.387 16.6 69.6 30.17 2.27%Sand-Slime Tailing 0.059 119.0 1.07 0.28 0.79 1 1.07 17.836 247.93 21.26 20 2.42% 2.7 47% 1.60 0.00 1.60 0 0.87 0.05 0.97 1.0 0.049 37.76 59.02 0.087 1.78 0.93 0.27 0.80 1.02 1.0 0.040 3.94 83.73 0.135 3.60 2.69 2 1.073838 18.303 1.7524 21.258
20.669 5595.18 17.8 0.559 17.1 110.3 47.80 3.15%Slime Tailings 0.057 113.1 1.08 0.29 0.79 1 1.07 18.247 253.63 22.05 21 3.35% 2.8 71% 1.61 0.00 1.61 0 0.87 0.05 0.97 1.0 0.049 37.77 59.81 0.088 1.80 0.93 0.27 0.80 1.02 1.0 0.040 4.50 99.19 0.171 4.55 3.18 2 1.068928 18.983 1.8174 22.047
20.833 5595.02 20.8 0.452 20.2 105.5 45.73 2.17%Sand-Slime Tailing 0.059 119.0 1.09 0.29 0.79 1 1.06 21.444 298.07 25.72 25 2.29% 2.6 47% 1.62 0.00 1.62 0 0.87 0.06 0.96 1.0 0.048 39.32 65.04 0.094 1.93 0.93 0.29 0.80 1.02 1.0 0.040 3.37 86.69 0.141 3.73 2.83 2 1.062097 22.143 2.12 25.718
20.997 5594.85 32.5 0.419 32.2 39.9 17.27 1.29%Sand-Slime Tailing 0.059 119.0 1.10 0.30 0.80 1 1.05 33.912 471.38 39.69 39 1.33% 2.3 47% 1.63 0.00 1.63 0 0.87 0.06 0.96 1.0 0.048 44.22 83.91 0.118 2.45 0.93 0.36 0.80 1.01 1.0 0.040 1.98 78.44 0.125 3.30 2.88 2 1.051875 34.174 3.2718 39.691
21.161 5594.69 30.5 0.438 30.5 -5.4 -2.35 1.44%Sand-Slime Tailing 0.059 119.0 1.11 0.30 0.80 1 1.05 32.002 444.83 37.13 37 1.49% 2.4 47% 1.64 0.00 1.64 0 0.87 0.06 0.96 1.0 0.048 43.32 80.45 0.113 2.36 0.92 0.35 0.80 1.01 1.0 0.040 2.16 80.34 0.128 3.37 2.86 2 1.048569 31.967 3.0605 37.128
21.325 5594.52 26.6 0.429 26.6 10.9 4.71 1.61%Sand-Slime Tailing 0.059 119.0 1.12 0.31 0.81 1 1.05 27.780 386.14 32.35 32 1.68% 2.4 47% 1.65 0.00 1.65 0 0.87 0.06 0.96 1.0 0.048 41.65 73.99 0.105 2.18 0.92 0.33 0.80 1.01 1.0 0.040 2.50 80.95 0.129 3.39 2.78 2 1.045923 27.851 2.6664 32.347
21.489 5594.36 31.3 0.445 31.2 10.5 4.56 1.42%Sand-Slime Tailing 0.059 119.0 1.13 0.31 0.81 1 1.04 32.472 451.36 37.79 37 1.48% 2.4 47% 1.66 0.00 1.66 0 0.86 0.06 0.96 1.0 0.048 43.56 81.35 0.114 2.39 0.92 0.35 0.80 1.01 1.0 0.040 2.13 80.68 0.129 3.36 2.87 2 1.0401 32.54 3.1154 37.794
21.653 5594.20 33.9 0.558 33.9 8.4 3.65 1.64%Sand-Slime Tailing 0.059 119.0 1.14 0.32 0.82 1 1.04 35.087 487.71 40.81 40 1.70% 2.4 47% 1.67 0.00 1.67 0 0.86 0.07 0.96 1.0 0.048 44.62 85.43 0.120 2.52 0.92 0.37 0.80 1.01 1.0 0.040 2.17 88.64 0.145 3.76 3.14 2 1.035325 35.142 3.3645 40.815
21.817 5594.03 28.7 0.579 28.7 11.6 5.03 2.01%Sand-Slime Tailing 0.059 119.0 1.15 0.32 0.82 1 1.03 29.609 411.56 34.48 34 2.10% 2.5 47% 1.68 0.00 1.68 0 0.86 0.06 0.96 1.0 0.048 42.39 76.87 0.108 2.27 0.92 0.34 0.80 1.01 1.0 0.040 2.68 92.26 0.153 3.96 3.11 2 1.032743 29.684 2.8419 34.476
21.981 5593.87 32.2 0.577 32.1 12.6 5.46 1.79%Sand-Slime Tailing 0.059 119.0 1.16 0.33 0.83 1 1.03 33.006 458.78 38.43 38 1.86% 2.4 47% 1.69 0.00 1.69 0 0.86 0.06 0.96 1.0 0.048 43.78 82.21 0.116 2.43 0.92 0.36 0.80 1.01 1.0 0.040 2.36 90.58 0.149 3.84 3.13 2 1.0279 33.087 3.1677 38.428
22.145 5593.70 31.5 0.519 31.4 11.5 4.97 1.65%Sand-Slime Tailing 0.059 119.0 1.17 0.33 0.83 1 1.02 32.168 447.13 37.45 36 1.71% 2.4 47% 1.70 0.00 1.70 0 0.86 0.06 0.96 1.0 0.048 43.43 80.88 0.114 2.40 0.92 0.35 0.80 1.01 1.0 0.040 2.31 86.41 0.140 3.59 2.99 2 1.024123 32.241 3.0868 37.446
22.309 5593.54 38.3 0.405 38.2 9.8 4.23 1.06%Sand-Slime Tailing 0.059 119.0 1.18 0.34 0.84 1 1.02 38.964 541.60 45.33 44 1.09% 2.2 47% 1.71 0.00 1.71 0 0.86 0.07 0.95 1.0 0.047 46.20 91.53 0.129 2.73 0.91 0.39 0.80 1.01 1.0 0.040 1.70 77.22 0.123 3.14 2.93 2 1.019209 39.027 3.7364 45.327
22.473 5593.38 36.9 0.465 36.9 8.3 3.58 1.26%Sand-Slime Tailing 0.059 119.0 1.18 0.34 0.84 1 1.02 37.469 520.81 43.58 43 1.30% 2.3 47% 1.72 0.00 1.72 0 0.86 0.07 0.95 1.0 0.047 45.59 89.16 0.126 2.66 0.91 0.38 0.80 1.00 1.0 0.040 1.87 81.40 0.130 3.31 2.99 2 1.015682 37.521 3.5923 43.578
22.638 5593.21 38.4 0.519 38.4 9.0 3.91 1.35%Sand-Slime Tailing 0.059 119.0 1.19 0.35 0.85 1 1.01 38.805 539.39 45.14 44 1.39% 2.3 47% 1.73 0.00 1.73 0 0.85 0.07 0.95 1.0 0.047 46.13 91.27 0.129 2.74 0.91 0.39 0.80 1.00 1.0 0.040 1.89 85.12 0.137 3.48 3.11 2 1.011867 38.862 3.7207 45.136
22.802 5593.05 41.4 0.519 41.3 10.3 4.46 1.25%Sand-Slime Tailing 0.059 119.0 1.20 0.35 0.85 1 1.01 41.633 578.70 48.43 47 1.29% 2.2 47% 1.74 0.00 1.74 0 0.85 0.07 0.95 1.0 0.047 47.29 95.72 0.136 2.89 0.91 0.40 0.80 1.00 1.0 0.040 1.76 85.15 0.137 3.47 3.18 2 1.008074 41.698 3.9922 48.430
22.966 5592.88 42.6 0.493 42.5 9.8 4.23 1.16%Sand-Slime Tailing 0.059 119.0 1.21 0.36 0.85 1 1.00 42.702 593.55 49.67 48 1.19% 2.2 47% 1.75 0.00 1.75 0 0.85 0.07 0.95 1.0 0.047 47.72 97.39 0.138 2.96 0.91 0.41 0.80 1.00 1.0 0.040 1.68 83.56 0.134 3.37 3.16 2 1.004512 42.763 4.0941 49.667
23.130 5592.72 41.6 0.532 41.6 11.5 4.97 1.28%Sand-Slime Tailing 0.059 119.0 1.22 0.36 0.86 1 1.00 41.593 578.15 48.39 47 1.32% 2.2 47% 1.76 0.00 1.76 0 0.85 0.07 0.95 1.0 0.047 47.27 95.66 0.136 2.90 0.91 0.40 0.80 1.00 1.0 0.040 1.78 85.96 0.139 3.48 3.19 2 1.001047 41.665 3.989 48.392
23.294 5592.56 42.3 0.534 42.2 13.1 5.66 1.26%Sand-Slime Tailing 0.059 119.0 1.23 0.37 0.86 1 1.00 42.088 585.03 48.98 47 1.30% 2.2 47% 1.77 0.00 1.77 0 0.85 0.07 0.95 1.0 0.047 47.48 96.46 0.137 2.93 0.91 0.40 0.80 1.00 1.0 0.040 1.76 86.10 0.139 3.47 3.20 2 0.997587 42.169 4.0373 48.977
23.458 5592.39 47.2 0.593 47.2 13.5 5.86 1.26%Sand-Slime Tailing 0.059 119.0 1.24 0.37 0.87 1 0.99 46.893 651.82 54.56 53 1.29% 2.2 47% 1.78 0.00 1.78 0 0.85 0.07 0.95 1.0 0.046 49.44 104.00 0.149 3.22 0.91 0.43 0.79 1.00 1.0 0.040 1.66 90.30 0.148 3.69 3.45 2 0.994344 46.977 4.4976 54.561
23.622 5592.23 49.1 0.674 49.0 13.7 5.94 1.37%Sand-Slime Tailing 0.059 119.0 1.25 0.38 0.87 1 0.99 48.576 675.21 56.52 55 1.41% 2.2 47% 1.79 0.00 1.79 0 0.85 0.08 0.95 1.0 0.046 50.12 106.64 0.154 3.32 0.90 0.43 0.78 1.00 1.0 0.040 1.68 95.21 0.160 3.96 3.64 2 0.99115 48.661 4.6588 56.517
23.786 5592.06 47.0 0.774 46.9 14.2 6.14 1.65%Sand-Slime Tailing 0.059 119.0 1.26 0.38 0.88 1 0.99 46.335 644.06 53.92 52 1.69% 2.3 47% 1.80 0.00 1.80 0 0.85 0.07 0.95 1.0 0.046 49.21 103.13 0.148 3.20 0.90 0.42 0.79 1.00 1.0 0.040 1.87 100.76 0.175 4.31 3.76 2 0.987748 46.423 4.4445 53.917
23.950 5591.90 41.4 0.772 41.4 13.6 5.88 1.86%Sand-Slime Tailing 0.059 119.0 1.27 0.39 0.88 1 0.98 40.695 565.65 47.36 46 1.92% 2.4 47% 1.81 0.00 1.81 0 0.84 0.07 0.95 1.0 0.046 46.91 94.27 0.133 2.88 0.90 0.40 0.80 1.00 1.0 0.040 2.14 101.19 0.176 4.33 3.61 2 0.983912 40.778 3.9041 47.361
Liquef_SeismicSettle_30Aug2015.xls Page 15 of 36
Energy Fuels Resources (USA) Inc.
White Mesa MillLiquefaction Analyses
Data File: 13-52106_SP2W6-S-BSC-CPT 5604.40 Water surface elevation during CPT investigation (ft5615.85 Ground Surface Elevation at time of CPT (ft amsl)Location: White Mesa 2013 CPT Investigation 0.15 5604.40 Water surface elevation at t0 (ft amsl)5625.41 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl)
..\..\..\6.2.3 Field Data\2013 Field Investigation\Conetec Dat 5.5 5588.59 Water surface elevation at t1 (ft amsl) 0.50 Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after pla ###### 5625.16 5624.91 0.50 0.055 110 0.028 0.014 0.00 0.00 0.028 0.014
Tailings Sands 1.69 5583.59 Water surface elevation at t2 (ft amsl)3.50 Thickness of Water Storage/Rooting Zone (ft) ###### 5623.16 5621.41 3.50 0.054 107 0.215 0.121 0.00 0.00 0.215 0.121
Tailings Sand-Slimes 4.00 Thickness of High Compaction Layer (ft)###### 5619.41 5617.41 4.00 0.060 120 0.454 0.334 0.00 0.00 0.454 0.334
Tailings Slimes 1.44 1.56 Thickness of Random/Platform Fill on on top of existing interim cover (ft) ###### 5616.63 5615.85 1.56 0.050 101 0.533 0.493 0.00 0.00 0.533 0.493
Interim Cover 0.47 1065.26 Additional Stress due to Final Cover Placement, ΔσFC (psf)
Cells Requiring User Input/Manipulation 2.21 2.21 7.51 5583.59 Elevation of bottom of tailings (liner) (ft amsl)
rd Cσ Kσ Ka rd Dr f Kσ Ka Avg CN qc1 qc1 qc1N
(ft) (ft amsl) TSF TSF TSF (ft) PSI (%) (tcf) (pcf) (tsf)(tsf)(tsf) 1=Yes TSF MPa % (tsf)(tsf)(tsf) 1=Yes FoS TSF MPa
0=No 0=No
Scaling Factor for stress ration, rm
Volumetric Strain Ratio for Site-Specific Design Ear
Equiv. Number of Uniform Strain Cycles, N
Youd et al. (2001)
CSR
M=7.5,
s'v=1atm
0.15
Earthquake Moment Magnitude, M: 5.5
Magnitude Scaling Factor, MSF:
Equil Pore
Pressure at time of
Conditions at t1 Liquefaction Triggering Analyses Idriss & Boulanger (2008)Equil
Pore
Pressure
at t1CN qc1 qc1 qc1N
Normalized Cone
Penetration Resistance, Qt
Normalized Friction
Ratio, Fr (%)
Total Stress
at t1 Liquefiable?
1=Yes
2=No
Cyclic Stress RatioEffective
Stress at
t1
Saturated
at t1
Idriss & Boulanger (2008)
Idriss and Boulanger (2008)
Max. Horiz. Acceleration, Amax/g:
Earthquake Moment Magnitude, M:
Magnitude Scaling Factor, MSF:
WHITE MESA TAILINGS REPOSITORY LIQUEFACTION AND SEISMIC SETTLEMENT ANALYSES - 2W6-S Elev. at
Top of Layer (ft)
Elev. At
Midpoint of Layer (ft)
Bottom
of Layer (ft)
Thickness of Layer (ft)
CSR
M=7.5,
s'v=1atm
Kc
High Compaction Layer
Platform/Random Fill Layer
Pw (u2)Pw (u2)
2013 CPT Data from ConeTec CPT Data Interpretations
fs/qt
Material Type (as determined
by fines
Unit Weight Unit Weight
Total Stress
at time of CPT
Depth
at time of CPT Elevation qt fs qc
Effective Stress at
time of CPT
Saturated
at time of CPT
Type Index, Ic FC
Youd, et al (2001)
Max. Horiz. Acceleration, Amax/g:
Stress at
Bottom of Layer (tsf)
Stress at
Midpoint of Layer (tsf)FINAL COVER
Erosion Protection Layer
Water Storage/Rooting Zone Layer
qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Equil Pore
Pressure at Midpoint of Layer (tsf)
Unit Weight (tcf)
Unit Weight (pcf)
Stress at
Bottom of Layer (tsf)
Stress at
Midpoint of Layer (tsf)
Pressure
at Bottom of Layer (tsf)
Cyclic Resistance Ratio
FoS
Cyclic Stress Ratio
FoS
∆qc1n qc1n-cs
(CRR)
M=7.5,
s'v=1atm
24.114 5591.74 41.1 0.727 41.0 13.4 5.82 1.77%Sand-Slime Tailing 0.059 119.0 1.28 0.40 0.89 1 0.98 40.240 559.34 46.83 45 1.82% 2.3 47% 1.82 0.00 1.82 0 0.84 0.07 0.95 1.0 0.046 46.73 93.56 0.132 2.86 0.90 0.40 0.80 0.99 1.0 0.040 2.10 98.40 0.169 4.12 3.49 2 0.980512 40.322 3.8605 46.832
24.278 5591.57 37.0 0.661 36.9 13.4 5.82 1.79%Sand-Slime Tailing 0.059 119.0 1.29 0.40 0.89 1 0.98 36.033 500.86 41.95 40 1.85% 2.4 47% 1.82 0.00 1.82 0 0.84 0.07 0.95 1.0 0.046 45.01 86.96 0.122 2.65 0.90 0.37 0.80 0.99 1.0 0.040 2.26 94.94 0.160 3.89 3.27 2 0.976508 36.115 3.4576 41.945
24.442 5591.41 32.5 0.603 32.4 13.5 5.86 1.85%Sand-Slime Tailing 0.059 119.0 1.30 0.41 0.90 1 0.97 31.538 438.38 36.73 35 1.93% 2.4 47% 1.83 0.00 1.83 0 0.84 0.06 0.95 1.0 0.046 43.18 79.91 0.113 2.43 0.90 0.35 0.80 0.99 1.0 0.040 2.51 92.27 0.153 3.71 3.07 2 0.972208 31.62 3.0273 36.725
24.606 5591.24 31.6 0.528 31.5 13.5 5.86 1.67%Sand-Slime Tailing 0.059 119.0 1.31 0.41 0.90 1 0.97 30.546 424.59 35.57 34 1.74% 2.4 47% 1.84 0.00 1.84 0 0.84 0.06 0.95 1.0 0.046 42.78 78.35 0.110 2.39 0.90 0.34 0.80 0.99 1.0 0.040 2.44 86.95 0.141 3.41 2.90 2 0.968496 30.628 2.9323 35.573
24.770 5591.08 31.6 0.507 31.5 15.0 6.51 1.60%Sand-Slime Tailing 0.059 119.0 1.32 0.42 0.91 1 0.97 30.436 423.06 35.45 33 1.67% 2.4 47% 1.85 0.00 1.85 0 0.84 0.06 0.95 1.0 0.046 42.74 78.19 0.110 2.39 0.89 0.34 0.80 0.99 1.0 0.040 2.41 85.32 0.138 3.32 2.85 2 0.965 30.527 2.9226 35.455
24.934 5590.92 32.8 0.414 32.7 16.5 7.16 1.26%Sand-Slime Tailing 0.059 119.0 1.33 0.42 0.91 1 0.96 31.433 436.92 36.62 35 1.32% 2.4 47% 1.86 0.00 1.86 0 0.84 0.06 0.95 1.0 0.046 43.15 79.77 0.112 2.44 0.89 0.35 0.80 0.99 1.0 0.040 2.12 77.71 0.124 2.97 2.71 2 0.961855 31.533 3.0189 36.623
25.098 5590.75 34.3 0.437 34.2 17.3 7.49 1.27%Sand-Slime Tailing 0.059 119.0 1.34 0.43 0.92 1 0.96 32.804 455.97 38.22 36 1.33% 2.3 47% 1.87 0.00 1.87 0 0.83 0.06 0.95 1.0 0.046 43.71 81.93 0.115 2.51 0.89 0.36 0.80 0.99 1.0 0.040 2.07 79.27 0.126 3.02 2.77 2 0.958897 32.907 3.1505 38.220
25.262 5590.59 36.0 0.512 35.9 14.2 6.17 1.42%Sand-Slime Tailing 0.059 119.0 1.35 0.43 0.92 1 0.96 34.352 477.49 40.00 38 1.48% 2.3 47% 1.88 0.00 1.88 0 0.83 0.06 0.95 1.0 0.046 44.33 84.32 0.119 2.60 0.89 0.37 0.80 0.99 1.0 0.040 2.12 84.60 0.136 3.25 2.92 2 0.956072 34.437 3.297 39.996
25.426 5590.42 41.3 0.688 41.2 15.1 6.55 1.67%Sand-Slime Tailing 0.059 119.0 1.36 0.44 0.92 1 0.95 39.342 546.86 45.80 43 1.72% 2.3 47% 1.89 0.00 1.89 0 0.83 0.07 0.95 1.0 0.045 46.36 92.16 0.130 2.86 0.89 0.39 0.80 0.99 1.0 0.040 2.09 95.76 0.162 3.84 3.35 2 0.954444 39.432 3.7752 45.798
25.590 5590.26 34.2 0.767 34.1 15.3 6.63 2.24%Sand-Slime Tailing 0.059 119.0 1.37 0.44 0.93 1 0.95 32.336 449.47 37.66 35 2.34% 2.5 47% 1.90 0.00 1.90 0 0.83 0.06 0.95 1.0 0.046 43.51 81.17 0.114 2.51 0.89 0.35 0.80 0.98 1.0 0.040 2.74 103.10 0.182 4.31 3.41 2 0.94883 32.427 3.1045 37.662
25.754 5590.10 26.7 0.796 26.6 16.0 6.92 2.98%Slime Tailings 0.057 113.1 1.38 0.45 0.93 1 0.94 25.105 348.96 29.27 27 3.14% 2.7 71% 1.91 0.00 1.91 0 0.83 0.06 0.95 1.0 0.046 40.28 69.55 0.099 2.17 0.89 0.31 0.80 0.98 1.0 0.040 3.74 109.38 0.202 4.76 3.46 2 0.942728 25.199 2.4125 29.267
25.918 5589.93 29.3 0.592 29.2 15.0 6.51 2.02%Sand-Slime Tailing 0.059 119.0 1.39 0.45 0.94 1 0.94 27.443 381.46 31.98 30 2.12% 2.5 47% 1.92 0.00 1.92 0 0.83 0.06 0.95 1.0 0.046 41.52 73.49 0.104 2.28 0.89 0.33 0.80 0.98 1.0 0.040 2.90 92.83 0.154 3.63 2.96 2 0.940474 27.531 2.6358 31.976
26.082 5589.77 35.4 0.454 35.3 14.3 6.19 1.28%Sand-Slime Tailing 0.059 119.0 1.40 0.46 0.94 1 0.94 33.177 461.16 38.63 36 1.34% 2.3 47% 1.93 0.00 1.93 0 0.83 0.06 0.95 1.0 0.045 43.85 82.48 0.116 2.56 0.88 0.36 0.80 0.98 1.0 0.040 2.08 80.35 0.128 3.01 2.78 2 0.939859 33.261 3.1844 38.630
26.246 5589.60 36.2 0.371 36.2 3.2 1.39 1.02%Sand-Slime Tailing 0.059 119.0 1.41 0.46 0.95 1 0.94 33.911 471.36 39.41 37 1.07% 2.3 47% 1.94 0.00 1.94 0 0.82 0.06 0.95 1.0 0.045 44.12 83.53 0.118 2.60 0.88 0.36 0.80 0.98 1.0 0.040 1.88 73.99 0.118 2.75 2.67 2 0.937013 33.929 3.2484 39.407
26.410 5589.44 36.1 0.419 36.1 4.6 1.98 1.16%Sand-Slime Tailing 0.059 119.0 1.42 0.47 0.95 1 0.93 33.729 468.84 39.21 36 1.21% 2.3 47% 1.95 0.00 1.95 0 0.82 0.06 0.95 1.0 0.045 44.05 83.26 0.117 2.60 0.88 0.36 0.80 0.98 1.0 0.040 1.98 77.62 0.123 2.87 2.74 2 0.933816 33.756 3.2318 39.206
26.574 5589.28 33.9 0.531 33.8 12.8 5.56 1.57%Sand-Slime Tailing 0.059 119.0 1.43 0.47 0.96 1 0.93 31.447 437.12 36.61 34 1.63% 2.4 47% 1.96 0.00 1.96 0 0.82 0.06 0.95 1.0 0.045 43.14 79.75 0.112 2.49 0.88 0.35 0.80 0.98 1.0 0.040 2.36 86.38 0.140 3.25 2.87 2 0.929574 31.522 3.0179 36.611
26.739 5589.11 36.3 0.568 36.2 16.5 7.16 1.57%Sand-Slime Tailing 0.059 119.0 1.44 0.48 0.96 1 0.93 33.570 466.63 39.10 36 1.63% 2.4 47% 1.97 0.00 1.97 0 0.82 0.06 0.95 1.0 0.045 44.01 83.12 0.117 2.60 0.88 0.36 0.80 0.98 1.0 0.040 2.26 88.48 0.144 3.34 2.97 2 0.92761 33.666 3.2232 39.101
26.903 5588.95 38.8 0.595 38.7 16.5 7.16 1.53%Sand-Slime Tailing 0.059 119.0 1.45 0.48 0.97 1 0.93 35.865 498.52 41.77 39 1.59% 2.4 47% 1.98 0.00 1.98 0 0.82 0.07 0.95 1.0 0.045 44.95 86.72 0.122 2.73 0.88 0.37 0.80 0.98 1.0 0.040 2.15 89.86 0.147 3.40 3.06 2 0.92579 35.961 3.4429 41.766
27.067 5588.78 39.4 0.647 39.3 18.0 7.81 1.64%Sand-Slime Tailing 0.059 119.0 1.46 0.49 0.97 1 0.92 36.285 504.36 42.26 39 1.70% 2.4 47% 1.99 0.00 1.99 0 0.82 0.07 0.94 1.0 0.045 45.12 87.39 0.123 2.76 0.88 0.38 0.80 0.98 1.0 0.040 2.21 93.25 0.155 3.57 3.16 2 0.923048 36.389 3.4839 42.264
27.231 5588.62 40.3 0.712 40.2 20.4 8.83 1.77%Sand-Slime Tailing 0.059 119.0 1.47 0.49 0.98 1 0.92 37.005 514.36 43.11 40 1.83% 2.4 47% 2.00 0.00 2.00 0 0.82 0.07 0.94 1.0 0.045 45.42 88.54 0.125 2.80 0.87 0.38 0.80 0.98 1.0 0.040 2.26 97.33 0.166 3.80 3.30 2 0.920512 37.122 3.554 43.115
27.395 5588.46 41.4 0.723 41.3 21.0 9.12 1.75%Sand-Slime Tailing 0.059 119.0 1.48 0.50 0.98 1 0.92 37.919 527.07 44.18 41 1.81% 2.4 47% 2.01 0.00 2.01 1 0.82 0.07 0.94 1.0 0.045 45.80 89.98 0.127 2.85 0.87 0.38 0.80 0.97 1.0 0.040 2.21 97.80 0.167 3.80 3.33 2 0.918124 38.039 3.6419 44.180
27.559 5588.29 42.9 0.670 42.8 19.2 8.30 1.56%Sand-Slime Tailing 0.059 119.0 1.49 0.50 0.98 1 0.92 39.157 544.29 45.61 42 1.62% 2.3 47% 2.02 0.01 2.01 1 0.81 0.07 0.94 1.0 0.045 46.30 91.90 0.130 2.91 0.87 0.39 0.80 0.97 1.0 0.040 2.07 94.21 0.158 3.57 3.24 2 0.91596 39.267 3.7594 45.606
27.723 5588.13 42.3 0.619 42.2 18.1 7.86 1.46%Sand-Slime Tailing 0.059 119.0 1.50 0.51 0.99 1 0.91 38.500 535.15 44.84 41 1.52% 2.3 47% 2.03 0.01 2.01 1 0.81 0.07 0.94 1.0 0.045 46.03 90.86 0.128 2.88 0.87 0.39 0.80 0.97 1.0 0.040 2.03 90.98 0.150 3.38 3.13 2 0.912754 38.603 3.6959 44.835
27.887 5587.96 42.4 0.626 42.2 20.2 8.77 1.48%Sand-Slime Tailing 0.059 119.0 1.51 0.51 0.99 1 0.91 38.435 534.24 44.77 41 1.53% 2.3 47% 2.04 0.02 2.02 1 0.81 0.07 0.94 1.0 0.045 46.00 90.78 0.128 2.87 0.87 0.39 0.80 0.97 1.0 0.040 2.04 91.41 0.151 3.38 3.13 2 0.909913 38.55 3.6907 44.773
28.051 5587.80 39.8 0.634 39.7 20.9 9.07 1.59%Sand-Slime Tailing 0.059 119.0 1.52 0.52 1.00 1 0.91 35.941 499.57 41.88 38 1.66% 2.4 47% 2.05 0.02 2.02 1 0.81 0.07 0.94 1.0 0.045 44.99 86.87 0.122 2.74 0.87 0.37 0.80 0.97 1.0 0.040 2.20 92.24 0.153 3.41 3.07 2 0.905532 36.059 3.4523 41.880
28.215 5587.64 43.4 0.590 43.3 19.6 8.48 1.36%Sand-Slime Tailing 0.059 119.0 1.53 0.52 1.00 1 0.90 39.142 544.07 45.59 42 1.41% 2.3 47% 2.06 0.03 2.03 1 0.81 0.07 0.94 1.0 0.045 46.29 91.88 0.130 2.91 0.87 0.39 0.80 0.97 1.0 0.040 1.95 89.01 0.146 3.22 3.07 2 0.904807 39.253 3.758 45.589
28.379 5587.47 44.3 0.552 44.2 15.3 6.61 1.25%Sand-Slime Tailing 0.059 119.0 1.54 0.53 1.01 1 0.90 39.911 554.76 46.45 42 1.29% 2.3 47% 2.07 0.03 2.03 1 0.81 0.07 0.94 1.0 0.045 46.59 93.05 0.132 2.95 0.87 0.39 0.80 0.97 1.0 0.040 1.86 86.56 0.140 3.09 3.02 2 0.902555 39.997 3.8293 46.454
28.543 5587.31 44.6 0.539 44.5 16.5 7.16 1.21%Sand-Slime Tailing 0.059 119.0 1.55 0.53 1.01 1 0.90 40.085 557.18 46.66 43 1.25% 2.3 47% 2.08 0.04 2.04 1 0.81 0.07 0.94 1.0 0.045 46.67 93.33 0.132 2.95 0.86 0.39 0.80 0.97 1.0 0.040 1.84 85.72 0.139 3.04 3.00 2 0.899974 40.178 3.8466 46.664
28.707 5587.14 45.4 0.570 45.2 18.3 7.93 1.26%Sand-Slime Tailing 0.059 119.0 1.56 0.54 1.02 1 0.90 40.610 564.48 47.29 43 1.30% 2.3 47% 2.09 0.05 2.04 1 0.80 0.07 0.94 1.0 0.045 46.89 94.17 0.133 2.98 0.86 0.40 0.80 0.97 1.0 0.040 1.85 87.70 0.143 3.11 3.05 2 0.897657 40.713 3.8978 47.285
28.871 5586.98 47.7 0.530 47.6 19.4 8.39 1.11%Sand Tailings 0.062 123.5 1.57 0.54 1.02 1 0.90 42.658 592.95 49.67 45 1.15% 2.2 18% 2.10 0.05 2.05 1 0.80 0.07 0.94 1.0 0.045 34.79 84.46 0.119 2.66 0.86 0.41 0.80 0.97 1.0 0.040 1.72 85.44 0.138 2.99 2.83 2 0.896182 42.767 4.0945 49.671
29.035 5586.81 50.3 0.530 50.2 19.4 8.42 1.05%Sand Tailings 0.062 123.5 1.58 0.55 1.03 1 0.89 44.933 624.57 52.31 47 1.09% 2.2 18% 2.11 0.06 2.05 1 0.80 0.07 0.94 1.0 0.045 35.46 87.78 0.124 2.77 0.86 0.42 0.79 0.96 1.0 0.040 1.64 85.89 0.139 2.99 2.88 2 0.894898 45.041 4.3123 52.313
29.199 5586.65 52.6 0.530 52.4 18.7 8.10 1.01%Sand Tailings 0.062 123.5 1.59 0.55 1.03 1 0.89 46.851 651.23 54.54 49 1.04% 2.2 18% 2.12 0.06 2.06 1 0.80 0.07 0.94 1.0 0.045 36.03 90.57 0.128 2.87 0.86 0.43 0.79 0.96 1.0 0.041 1.58 86.40 0.140 3.00 2.93 2 0.893422 46.955 4.4955 54.536
Liquef_SeismicSettle_30Aug2015.xls Page 16 of 36
Energy Fuels Resources (USA) Inc.
White Mesa MillLiquefaction Analyses
Data File: 13-52106_SP2W7-C-BSC-CPT 5613.10 Water surface elevation during CPT investigation (f5619.60 Ground Surface Elevation at time of CPT (ft amsl)Location: White Mesa 2013 CPT Investigation 0.15 5611.32 Water surface elevation at t0 (ft amsl)5626.65 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl)
..\..\..\6.2.3 Field Data\2013 Field Investigation\Conetec Dat 5.5 5595.40 Water surface elevation at t1 (ft amsl) 0.50 Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after pla ###### 5626.4 5626.15 0.50 0.055 110 0.028 0.014 0.00 0.00 0.028 0.014
Tailings Sands 1.69 5590.40 Water surface elevation at t2 (ft amsl)3.50 Thickness of Water Storage/Rooting Zone (ft) ###### 5624.4 5622.65 3.50 0.054 107 0.215 0.121 0.00 0.00 0.215 0.121
Tailings Sand-Slimes 4.00 Thickness of High Compaction Layer (ft)###### 5620.65 5618.65 4.00 0.060 120 0.454 0.334 0.00 0.00 0.454 0.334
Tailings Slimes 1.44 -0.95 Thickness of Random/Platform Fill on on top of existing interim cover (ft) ###### 5619.13 5619.60 -0.95 0.050 101 0.406 0.430 0.00 0.00 0.406 0.430
Interim Cover 0.47 812.44 Additional Stress due to Final Cover Placement, ΔσFC (psf)
Cells Requiring User Input/Manipulation 2.21 2.21 7.51 5590.40 Elevation of bottom of tailings (liner) (ft amsl)
rd Cσ Kσ Ka rd Dr f Kσ Ka Avg CN qc1 qc1 qc1N
(ft) (ft amsl) TSF TSF TSF (ft) PSI (%) (tcf) (pcf) (tsf)(tsf)(tsf) 1=Yes TSF MPa % (tsf)(tsf)(tsf) 1=Yes FoS TSF MPa
0=No 0=No
0.164 5619.44 37.3 0.106 37.3 3.0 1.31 0.28%Interim Cover 0.050 100.7 0.01 0.00 0.01 0 1.70 63.359 880.69 73.63 4513 0.28% 0.7 51% 0.41 0.00 0.41 0 1.00 0.09 1.06 1.0 0.061 56.16 129.78 0.202 3.29 0.98 0.50 0.75 3.16 1.0 0.014 1.00 73.63 0.117 281.58 142.44 2 1.7 63.391 6.0691 73.625
0.328 5619.27 49.3 0.150 49.3 3.1 1.34 0.30%Interim Cover 0.050 100.7 0.02 0.00 0.02 0 1.70 83.827 ###### 97.40 2985 0.30% 0.7 51% 0.42 0.00 0.42 0 1.00 0.10 1.07 1.0 0.062 64.50 161.90 0.339 5.46 0.98 0.57 0.72 3.08 1.0 0.014 1.00 97.40 0.166 199.54 102.50 2 1.7 83.86 8.0287 97.398
0.492 5619.11 59.2 0.224 59.1 4.5 1.95 0.38%Interim Cover 0.050 100.7 0.02 0.00 0.02 0 1.70 100.521 ###### 116.80 2386 0.38% 0.8 51% 0.43 0.00 0.43 0 1.00 0.12 1.08 1.0 0.063 71.31 188.12 0.701 11.18 0.98 0.62 0.69 3.02 1.0 0.014 1.00 116.80 0.228 183.03 97.10 2 1.7 100.57 9.6285 116.805
0.656 5618.94 63.9 0.317 63.8 2.3 0.98 0.50%Interim Cover 0.050 100.7 0.03 0.00 0.03 0 1.70 108.528 ###### 126.08 1931 0.50% 0.9 51% 0.44 0.00 0.44 0 1.00 0.13 1.09 1.0 0.063 74.56 200.64 1.000 15.90 0.98 0.65 0.68 2.88 1.0 0.015 1.00 126.08 0.266 160.29 88.10 2 1.7 108.55 10.393 126.076
0.820 5618.78 65.3 0.442 65.3 2.3 1.01 0.68%Interim Cover 0.050 100.7 0.04 0.00 0.04 0 1.70 110.925 ###### 128.86 1579 0.68% 1.1 51% 0.45 0.00 0.45 0 1.00 0.13 1.09 1.0 0.063 75.54 204.40 1.000 15.91 0.98 0.66 0.67 2.71 1.0 0.016 1.00 128.86 0.279 134.37 75.14 2 1.7 110.95 10.622 128.862
0.984 5618.62 74.0 0.500 74.0 6.1 2.66 0.68%Interim Cover 0.050 100.7 0.05 0.00 0.05 0 1.70 125.766 ###### 146.15 1492 0.68% 1.1 51% 0.46 0.00 0.46 0 1.00 0.15 1.10 1.0 0.063 81.61 227.75 1.000 15.75 0.98 0.70 0.65 2.71 1.0 0.016 1.00 146.15 0.370 148.67 82.21 2 1.7 125.83 12.047 146.145
1.148 5618.45 70.5 0.458 70.5 1.5 0.67 0.65%Interim Cover 0.050 100.7 0.06 0.00 0.06 0 1.70 119.799 ###### 139.16 1218 0.65% 1.1 51% 0.46 0.00 0.46 0 1.00 0.15 1.09 1.0 0.063 79.16 218.31 1.000 15.87 0.98 0.68 0.66 2.51 1.0 0.017 1.00 139.16 0.331 113.82 64.85 2 1.7 119.82 11.471 139.158
1.312 5618.29 76.0 0.403 76.0 0.8 0.34 0.53%Interim Cover 0.050 100.7 0.07 0.00 0.07 0 1.70 129.234 ###### 150.11 1149 0.53% 1.0 51% 0.47 0.00 0.47 0 1.00 0.16 1.10 1.0 0.063 83.00 233.11 1.000 15.78 0.98 0.71 0.65 2.48 1.0 0.017 1.00 150.11 0.395 118.90 67.34 2 1.7 129.24 12.374 150.107
1.476 5618.12 71.1 0.468 71.1 3.0 1.32 0.66%Interim Cover 0.050 100.7 0.07 0.00 0.07 0 1.70 120.887 ###### 140.44 956 0.66% 1.1 51% 0.48 0.00 0.48 0 1.00 0.15 1.09 1.0 0.063 79.61 220.05 1.000 15.93 0.98 0.68 0.66 2.31 1.0 0.019 1.00 140.44 0.338 90.47 53.20 2 1.7 120.92 11.577 140.440
1.640 5617.96 69.3 0.535 69.3 1.0 0.42 0.77%Interim Cover 0.050 100.7 0.08 0.00 0.08 0 1.70 117.742 ###### 136.76 837 0.77% 1.2 51% 0.49 0.00 0.49 0 1.00 0.14 1.08 1.0 0.062 78.31 215.08 1.000 16.00 0.98 0.68 0.66 2.21 1.0 0.020 1.00 136.76 0.318 76.70 46.35 2 1.7 117.75 11.274 136.762
1.804 5617.80 67.9 0.630 67.9 1.5 0.63 0.93%Interim Cover 0.050 100.7 0.09 0.00 0.09 0 1.70 115.362 ###### 134.00 746 0.93% 1.3 51% 0.50 0.00 0.50 0 1.00 0.14 1.08 1.0 0.062 77.35 211.35 1.000 16.07 0.98 0.67 0.67 2.12 1.0 0.020 1.00 134.00 0.304 66.66 41.36 2 1.7 115.38 11.046 134.004
1.968 5617.63 62.3 0.676 62.3 2.1 0.91 1.08%Interim Cover 0.050 100.7 0.10 0.00 0.10 0 1.70 105.927 ###### 123.05 628 1.09% 1.4 51% 0.51 0.00 0.51 0 1.00 0.13 1.07 1.0 0.062 73.50 196.56 0.977 15.83 0.98 0.64 0.68 2.00 1.0 0.022 1.00 123.05 0.253 50.97 33.40 2 1.7 105.95 10.144 123.054
2.133 5617.47 58.0 0.590 58.0 0.7 0.30 1.02%Interim Cover 0.050 100.7 0.11 0.00 0.11 0 1.70 98.566 ###### 114.49 539 1.02% 1.4 51% 0.51 0.00 0.51 0 1.00 0.12 1.06 1.0 0.061 70.50 184.98 0.628 10.25 0.98 0.62 0.69 1.90 1.0 0.023 1.00 114.49 0.220 40.80 25.53 2 1.7 98.573 9.4374 114.487
2.297 5617.30 56.9 0.428 56.9 1.5 0.65 0.75%Interim Cover 0.050 100.7 0.12 0.00 0.12 0 1.70 96.730 ###### 112.36 491 0.75% 1.3 51% 0.52 0.00 0.52 0 1.00 0.12 1.06 1.0 0.061 69.75 182.12 0.572 9.37 0.98 0.61 0.69 1.85 1.0 0.023 1.00 112.36 0.212 36.58 22.98 2 1.7 96.746 9.2624 112.364
2.461 5617.14 58.9 0.597 58.9 2.3 0.99 1.01%Interim Cover 0.050 100.7 0.12 0.00 0.12 0 1.70 100.062 ###### 116.24 474 1.02% 1.5 51% 0.53 0.00 0.53 0 1.00 0.12 1.06 1.0 0.061 71.11 187.36 0.682 11.18 0.98 0.62 0.69 1.83 1.0 0.024 1.00 116.24 0.226 36.44 23.81 2 1.7 100.09 9.5823 116.244
2.625 5616.98 67.5 0.562 67.5 1.5 0.63 0.83%Interim Cover 0.050 100.7 0.13 0.00 0.13 0 1.70 114.801 ###### 133.35 510 0.83% 1.4 51% 0.54 0.00 0.54 0 1.00 0.14 1.07 1.0 0.061 77.12 210.47 1.000 16.31 0.98 0.67 0.67 1.87 1.0 0.023 1.00 133.35 0.301 45.43 30.87 2 1.7 114.82 10.993 133.352
2.789 5616.81 68.3 0.681 68.3 1.1 0.49 1.00%Interim Cover 0.050 100.7 0.14 0.00 0.14 0 1.70 116.076 ###### 134.83 485 1.00% 1.4 51% 0.55 0.00 0.55 0 0.99 0.14 1.06 1.0 0.061 77.64 212.47 1.000 16.34 0.98 0.67 0.66 1.84 1.0 0.023 1.00 134.83 0.308 43.82 30.08 2 1.7 116.09 11.114 134.829
2.953 5616.65 72.4 0.913 72.4 0.1 0.04 1.26%Interim Cover 0.050 100.7 0.15 0.00 0.15 0 1.70 123.114 ###### 142.99 486 1.26% 1.5 51% 0.55 0.00 0.55 0 0.99 0.15 1.07 1.0 0.061 80.50 223.49 1.000 16.32 0.98 0.69 0.65 1.83 1.0 0.023 1.00 142.99 0.352 47.32 31.82 2 1.7 123.11 11.787 142.991
3.117 5616.48 67.6 0.613 67.6 0.1 0.04 0.91%Interim Cover 0.050 100.7 0.16 0.00 0.16 0 1.70 114.869 ###### 133.41 429 0.91% 1.4 51% 0.56 0.00 0.56 0 0.99 0.14 1.06 1.0 0.061 77.14 210.55 1.000 16.45 0.98 0.67 0.67 1.76 1.0 0.024 1.00 133.41 0.301 38.34 27.39 2 1.7 114.87 10.998 133.415
3.281 5616.32 81.3 2.130 81.3 -0.3 -0.12 2.62%Sand-Slime Tailing 0.047 93.3 0.16 0.00 0.16 0 1.70 138.261 ###### 160.58 493 2.62% 1.8 47% 0.57 0.00 0.57 0 0.99 0.18 1.07 1.0 0.062 86.62 247.20 1.000 16.26 0.98 0.73 0.63 1.83 1.0 0.023 1.12 179.35 1.000 121.56 68.91 2 1.7 138.26 13.237 160.578
3.445 5616.16 80.0 1.732 79.9 8.4 3.65 2.17%Sand-Slime Tailing 0.047 93.3 0.17 0.00 0.17 0 1.70 135.864 ###### 157.90 463 2.17% 1.8 47% 0.58 0.00 0.58 0 0.99 0.17 1.07 1.0 0.061 85.68 243.58 1.000 16.34 0.98 0.73 0.64 1.79 1.0 0.024 1.07 169.42 1.000 116.20 66.27 2 1.7 135.95 13.016 157.902
3.609 5615.99 65.9 1.776 65.8 3.9 1.68 2.70%Sand-Slime Tailing 0.047 93.3 0.18 0.00 0.18 0 1.70 111.911 ###### 130.03 365 2.70% 1.9 47% 0.59 0.00 0.59 0 0.99 0.14 1.05 1.0 0.060 75.90 205.93 1.000 16.60 0.98 0.66 0.67 1.67 1.0 0.026 1.18 152.78 0.412 45.82 31.21 2 1.7 111.95 10.718 130.026
3.773 5615.83 50.8 1.506 50.8 2.8 1.21 2.96%Sand-Slime Tailing 0.047 93.3 0.19 0.00 0.19 0 1.70 86.343 ###### 100.32 270 2.98% 2.0 47% 0.59 0.00 0.59 0 0.99 0.11 1.04 1.0 0.059 65.48 165.80 0.369 6.21 0.97 0.58 0.71 1.55 1.0 0.028 1.28 128.71 0.278 29.73 17.97 2 1.7 86.373 8.2693 100.317
3.937 5615.66 56.3 1.282 56.3 3.5 1.52 2.28%Sand-Slime Tailing 0.047 93.3 0.20 0.00 0.20 0 1.70 95.642 ###### 111.13 287 2.29% 1.9 47% 0.60 0.00 0.60 0 0.99 0.12 1.04 1.0 0.060 69.27 180.40 0.542 9.11 0.97 0.61 0.70 1.57 1.0 0.027 1.17 129.62 0.283 29.01 19.06 2 1.7 95.679 9.1603 111.126
4.101 5615.50 62.9 1.087 62.9 1.5 0.65 1.73%Sand-Slime Tailing 0.047 93.3 0.20 0.00 0.20 0 1.70 106.913 ###### 124.19 309 1.73% 1.8 47% 0.61 0.00 0.61 0 0.99 0.13 1.04 1.0 0.060 73.86 198.05 1.000 16.77 0.97 0.64 0.68 1.59 1.0 0.027 1.08 133.72 0.302 29.89 23.33 2 1.7 106.93 10.237 124.191
4.265 5615.33 59.1 1.275 59.1 0.2 0.10 2.16%Sand-Slime Tailing 0.047 93.3 0.21 0.00 0.21 0 1.70 100.402 ###### 116.61 280 2.17% 1.9 47% 0.62 0.00 0.62 0 0.99 0.12 1.04 1.0 0.059 71.20 187.81 0.693 11.68 0.97 0.62 0.69 1.55 1.0 0.028 1.16 134.72 0.307 29.29 20.48 2 1.7 100.4 9.6127 116.614
4.429 5615.17 53.9 1.413 53.9 6.9 3.00 2.62%Sand-Slime Tailing 0.047 93.3 0.22 0.00 0.22 0 1.70 91.630 ###### 106.51 246 2.63% 2.0 47% 0.62 0.00 0.62 0 0.99 0.11 1.04 1.0 0.059 67.66 174.16 0.453 7.68 0.97 0.60 0.70 1.51 1.0 0.029 1.25 133.61 0.302 27.76 17.72 2 1.7 91.703 8.7797 106.508
4.593 5615.01 52.0 1.603 52.0 1.0 0.44 3.08%Sand-Slime Tailing 0.047 93.3 0.23 0.00 0.23 0 1.70 88.468 ###### 102.76 229 3.09% 2.0 47% 0.63 0.00 0.63 0 0.98 0.11 1.03 1.0 0.059 66.34 169.10 0.399 6.77 0.97 0.59 0.71 1.48 1.0 0.029 1.35 139.13 0.330 29.37 18.07 2 1.7 88.479 8.471 102.763
4.757 5614.84 50.3 1.706 50.2 1.6 0.71 3.40%Sand-Slime Tailing 0.047 93.3 0.23 0.00 0.23 0 1.70 85.408 ###### 99.22 214 3.41% 2.1 47% 0.64 0.00 0.64 0 0.98 0.11 1.03 1.0 0.059 65.10 164.31 0.357 6.09 0.97 0.58 0.71 1.46 1.0 0.029 1.44 142.65 0.350 30.10 18.09 2 1.7 85.425 8.1786 99.216
4.921 5614.68 56.7 1.658 56.7 1.0 0.41 2.93%Sand-Slime Tailing 0.047 93.3 0.24 0.00 0.24 0 1.70 96.339 ###### 111.90 234 2.94% 2.0 47% 0.65 0.00 0.65 0 0.98 0.12 1.03 1.0 0.059 69.55 181.45 0.560 9.54 0.97 0.61 0.69 1.48 1.0 0.029 1.32 147.75 0.380 31.66 20.60 2 1.7 96.349 9.2245 111.904
5.085 5614.51 41.7 0.963 41.7 2.7 1.19 2.31%Sand-Slime Tailing 0.047 93.3 0.25 0.00 0.25 0 1.70 70.856 984.90 82.33 167 2.32% 2.0 47% 0.65 0.00 0.65 0 0.98 0.09 1.03 1.0 0.058 59.18 141.50 0.238 4.08 0.97 0.52 0.74 1.38 1.0 0.031 1.32 109.07 0.201 16.21 10.15 2 1.7 70.885 6.7865 82.329
5.249 5614.35 52.5 1.083 52.5 3.5 1.53 2.06%Sand-Slime Tailing 0.047 93.3 0.26 0.00 0.26 0 1.70 89.199 ###### 103.64 204 2.07% 1.9 47% 0.66 0.00 0.66 0 0.98 0.11 1.03 1.0 0.058 66.65 170.29 0.410 7.03 0.97 0.59 0.71 1.43 1.0 0.030 1.21 125.85 0.265 20.81 13.92 2 1.7 89.237 8.5435 103.643
5.413 5614.19 21.3 0.563 21.3 1.4 0.60 2.64%Sand-Slime Tailing 0.047 93.3 0.26 0.00 0.26 0 1.70 36.210 503.32 42.07 80 2.68% 2.3 47% 0.67 0.00 0.67 0 0.98 0.07 1.02 1.0 0.058 45.06 87.13 0.123 2.13 0.97 0.37 0.80 1.27 1.0 0.034 1.87 78.68 0.125 9.54 5.84 2 1.7 36.225 3.4681 42.073
5.577 5614.02 22.2 0.545 22.2 0.6 0.28 2.46%Sand-Slime Tailing 0.047 93.3 0.27 0.00 0.27 0 1.70 37.706 524.11 43.80 81 2.49% 2.2 47% 0.68 0.00 0.68 0 0.98 0.07 1.02 1.0 0.058 45.66 89.46 0.126 2.19 0.97 0.38 0.80 1.26 1.0 0.034 1.79 78.56 0.125 9.26 5.73 2 1.7 37.713 3.6106 43.801
5.741 5613.86 18.0 0.373 18.0 0.3 0.13 2.07%Sand-Slime Tailing 0.047 93.3 0.28 0.00 0.28 0 1.70 30.668 426.29 35.62 64 2.10% 2.3 47% 0.69 0.00 0.69 0 0.98 0.06 1.01 1.0 0.057 42.80 78.42 0.110 1.93 0.97 0.34 0.80 1.25 1.0 0.034 1.86 66.20 0.107 7.71 4.82 2 1.7 30.671 2.9365 35.623
5.905 5613.69 7.7 0.333 7.7 3.8 1.64 4.34%Slime Tailings 0.041 82.7 0.29 0.00 0.29 0 1.70 13.005 180.77 15.15 26 4.51% 2.8 71% 0.69 0.00 0.69 0 0.98 0.05 1.01 1.0 0.057 35.36 50.52 0.078 1.37 0.97 0.22 0.80 1.25 1.0 0.034 4.65 70.38 0.112 7.91 4.64 2 1.7 13.045 1.2489 15.151
6.069 5613.53 10.4 0.134 10.3 9.4 4.09 1.29%Sand-Slime Tailing 0.047 93.3 0.29 0.00 0.29 0 1.70 17.544 243.86 20.49 34 1.33% 2.4 47% 0.70 0.00 0.70 0 0.98 0.05 1.01 1.0 0.057 37.49 57.98 0.086 1.50 0.97 0.26 0.80 1.24 1.0 0.034 2.14 43.82 0.087 5.93 3.72 2 1.7 17.644 1.6893 20.493
6.234 5613.37 11.4 0.206 11.4 8.9 3.87 1.80%Sand-Slime Tailing 0.047 93.3 0.30 0.00 0.30 0 1.70 19.363 269.15 22.60 37 1.85% 2.4 47% 0.71 0.00 0.71 0 0.98 0.05 1.01 1.0 0.057 38.23 60.83 0.089 1.56 0.97 0.27 0.80 1.23 1.0 0.035 2.37 53.60 0.094 6.31 3.93 2 1.7 19.458 1.8629 22.599
6.398 5613.20 13.7 0.185 13.7 7.0 3.03 1.35%Sand-Slime Tailing 0.047 93.3 0.31 0.00 0.31 0 1.70 23.239 323.02 27.08 43 1.38% 2.3 47% 0.72 0.00 0.72 0 0.97 0.06 1.01 1.0 0.057 39.80 66.87 0.096 1.68 0.97 0.30 0.80 1.23 1.0 0.035 1.89 51.26 0.093 6.03 3.86 2 1.7 23.313 2.232 27.077
6.562 5613.04 12.1 0.174 12.0 6.7 2.91 1.44%Sand-Slime Tailing 0.059 119.0 0.32 0.00 0.32 1 1.70 20.417 283.80 23.80 37 1.48% 2.4 47% 0.73 0.00 0.73 0 0.97 0.05 1.01 1.0 0.057 38.65 62.44 0.091 1.60 0.97 0.28 0.80 1.22 1.0 0.035 2.14 50.97 0.092 5.87 3.73 2 1.7 20.488 1.9616 23.796
6.726 5612.87 13.0 0.171 13.0 6.5 2.83 1.32%Sand-Slime Tailing 0.059 119.0 0.33 0.01 0.32 1 1.70 22.032 306.24 25.67 39 1.35% 2.3 47% 0.73 0.00 0.73 0 0.97 0.06 1.01 1.0 0.057 39.30 64.97 0.094 1.65 0.97 0.29 0.80 1.22 1.0 0.035 1.98 50.86 0.092 5.79 3.72 2 1.7 22.101 2.116 25.669
6.890 5612.71 12.7 0.139 12.6 5.2 2.27 1.10%Sand-Slime Tailing 0.059 119.0 0.34 0.01 0.33 1 1.70 21.488 298.68 25.02 38 1.13% 2.3 47% 0.74 0.00 0.74 0 0.97 0.06 1.01 1.0 0.057 39.08 64.10 0.093 1.63 0.97 0.29 0.80 1.21 1.0 0.035 1.89 47.20 0.089 5.53 3.58 2 1.7 21.544 2.0626 25.021
7.054 5612.55 17.0 0.146 16.9 6.6 2.86 0.86%Sand-Slime Tailing 0.059 119.0 0.35 0.02 0.33 1 1.70 28.747 399.58 33.47 50 0.88% 2.1 47% 0.75 0.00 0.75 0 0.97 0.06 1.01 1.0 0.057 42.04 75.51 0.107 1.89 0.97 0.33 0.80 1.21 1.0 0.035 1.49 49.82 0.091 5.58 3.74 2 1.7 28.817 2.7589 33.469
7.218 5612.38 20.2 0.150 20.2 3.0 1.29 0.74%Sand-Slime Tailing 0.059 119.0 0.36 0.02 0.34 1 1.70 34.272 476.38 39.84 59 0.76% 2.0 47% 0.76 0.00 0.76 0 0.97 0.06 1.01 1.0 0.056 44.27 84.12 0.118 2.10 0.97 0.36 0.80 1.21 1.0 0.035 1.33 53.04 0.094 5.65 3.87 2 1.7 34.304 3.2842 39.842
7.382 5612.22 19.8 0.235 19.8 2.2 0.97 1.18%Sand-Slime Tailing 0.059 119.0 0.37 0.03 0.34 1 1.70 33.711 468.58 39.18 57 1.21% 2.2 47% 0.77 0.00 0.77 0 0.97 0.06 1.01 1.0 0.056 44.04 83.22 0.117 2.08 0.97 0.36 0.80 1.20 1.0 0.035 1.55 60.90 0.101 6.00 4.04 2 1.7 33.735 3.2298 39.181
7.546 5612.05 17.7 0.285 17.7 2.4 1.03 1.61%Sand-Slime Tailing 0.059 119.0 0.38 0.03 0.34 1 1.70 30.022 417.31 34.90 50 1.65% 2.3 47% 0.78 0.00 0.78 0 0.97 0.06 1.01 1.0 0.056 42.54 77.44 0.109 1.94 0.97 0.34 0.80 1.20 1.0 0.035 1.88 65.77 0.106 6.24 4.09 2 1.7 30.047 2.8767 34.898
7.710 5611.89 13.4 0.165 13.3 4.3 1.85 1.24%Sand-Slime Tailing 0.059 119.0 0.39 0.04 0.35 1 1.70 22.661 314.99 26.37 37 1.27% 2.3 47% 0.79 0.00 0.79 0 0.97 0.06 1.00 1.0 0.056 39.55 65.92 0.095 1.69 0.97 0.30 0.80 1.20 1.0 0.036 2.00 52.82 0.094 5.42 3.56 2 1.7 22.706 2.1739 26.372
7.874 5611.73 9.6 0.188 9.6 6.8 2.93 1.96%Slime Tailings 0.057 113.1 0.40 0.04 0.35 1 1.70 16.269 226.14 18.98 26 2.04% 2.6 71% 0.80 0.00 0.80 0 0.96 0.05 1.00 1.0 0.056 36.70 55.68 0.083 1.49 0.97 0.25 0.80 1.19 1.0 0.036 3.10 58.76 0.099 5.66 3.57 2 1.7 16.341 1.5645 18.979
8.038 5611.56 13.1 0.151 13.1 10.1 4.39 1.15%Sand-Slime Tailing 0.059 119.0 0.41 0.05 0.36 1 1.70 22.219 308.84 25.93 36 1.19% 2.3 47% 0.81 0.00 0.81 0 0.96 0.06 1.00 1.0 0.056 39.40 65.33 0.094 1.68 0.96 0.29 0.80 1.19 1.0 0.036 2.00 51.81 0.093 5.25 3.47 2 1.7 22.327 2.1375 25.931
8.202 5611.40 15.0 0.146 15.0 9.8 4.25 0.97%Sand-Slime Tailing 0.059 119.0 0.42 0.05 0.36 1 1.70 25.449 353.74 29.68 40 1.00% 2.2 47% 0.82 0.00 0.82 0 0.96 0.06 1.00 1.0 0.056 40.71 70.39 0.100 1.79 0.96 0.31 0.80 1.19 1.0 0.036 1.74 51.61 0.093 5.18 3.49 2 1.7 25.553 2.4465 29.678
8.366 5611.23 23.6 0.220 23.6 9.0 3.91 0.93%Sand-Slime Tailing 0.059 119.0 0.43 0.06 0.37 1 1.70 40.086 557.20 46.67 63 0.95% 2.1 47% 0.83 0.00 0.83 0 0.96 0.07 1.00 1.0 0.056 46.67 93.34 0.132 2.37 0.96 0.39 0.80 1.19 1.0 0.036 1.38 64.29 0.105 5.77 4.07 2 1.7 40.182 3.847 46.669
8.530 5611.07 19.7 0.264 19.7 4.3 1.88 1.34%Sand-Slime Tailing 0.059 119.0 0.44 0.06 0.37 1 1.70 33.473 465.27 38.93 52 1.37% 2.2 47% 0.84 0.00 0.84 0 0.96 0.06 1.00 1.0 0.056 43.95 82.89 0.117 2.10 0.96 0.36 0.80 1.18 1.0 0.036 1.71 66.71 0.108 5.86 3.98 2 1.7 33.519 3.2091 38.930
8.694 5610.91 18.6 0.186 18.5 5.3 2.28 1.00%Sand-Slime Tailing 0.059 119.0 0.45 0.07 0.38 1 1.70 31.518 438.10 36.67 48 1.03% 2.2 47% 0.85 0.00 0.85 0 0.96 0.06 1.00 1.0 0.056 43.16 79.83 0.112 2.02 0.96 0.35 0.80 1.18 1.0 0.036 1.60 58.60 0.099 5.31 3.67 2 1.7 31.574 3.0229 36.671
8.858 5610.74 20.2 0.179 20.2 4.2 1.83 0.88%Sand-Slime Tailing 0.059 119.0 0.46 0.07 0.38 1 1.70 34.340 477.33 39.94 52 0.91% 2.1 47% 0.86 0.00 0.86 0 0.96 0.06 1.00 1.0 0.055 44.31 84.24 0.119 2.14 0.96 0.36 0.80 1.18 1.0 0.036 1.48 59.08 0.099 5.27 3.71 2 1.7 34.385 3.292 39.936
9.022 5610.58 17.5 0.248 17.5 1.3 0.56 1.42%Sand-Slime Tailing 0.059 119.0 0.46 0.08 0.39 1 1.70 29.750 413.53 34.57 44 1.46% 2.3 47% 0.87 0.00 0.87 0 0.96 0.06 1.00 1.0 0.055 42.43 76.99 0.109 1.96 0.96 0.34 0.80 1.17 1.0 0.036 1.92 66.25 0.107 5.63 3.79 2 1.7 29.764 2.8496 34.569
9.186 5610.41 11.5 0.137 11.5 1.4 0.62 1.19%Sand-Slime Tailing 0.059 119.0 0.47 0.08 0.39 1 1.70 19.584 272.22 22.76 28 1.24% 2.4 47% 0.88 0.00 0.88 0 0.96 0.05 1.00 1.0 0.055 38.29 61.05 0.089 1.61 0.96 0.28 0.80 1.17 1.0 0.036 2.34 53.38 0.094 4.89 3.25 2 1.7 19.599 1.8764 22.763
9.350 5610.25 8.4 0.124 8.3 6.1 2.63 1.48%Sand-Slime Tailing 0.059 119.0 0.48 0.09 0.40 1 1.70 14.178 197.07 16.54 20 1.57% 2.6 47% 0.89 0.00 0.89 0 0.96 0.05 1.00 1.0 0.055 36.10 52.64 0.080 1.45 0.96 0.23 0.80 1.17 1.0 0.036 3.27 54.12 0.095 4.87 3.16 2 1.7 14.243 1.3636 16.542
9.514 5610.09 6.6 0.048 6.4 25.6 11.08 0.73%Slime Tailings 0.057 113.1 0.49 0.09 0.40 1 1.70 10.897 151.47 12.97 15 0.79% 2.5 71% 0.90 0.00 0.90 0 0.95 0.05 1.00 1.0 0.055 34.60 47.58 0.075 1.37 0.96 0.21 0.80 1.17 1.0 0.036 3.01 39.09 0.083 4.20 2.78 2 1.7 11.168 1.0693 12.971
9.678 5609.92 7.3 0.052 7.1 34.6 14.98 0.72%Sand-Slime Tailing 0.059 119.0 0.50 0.10 0.40 1 1.70 11.985 166.59 14.35 17 0.77% 2.5 47% 0.91 0.00 0.91 0 0.95 0.05 1.00 1.0 0.055 35.33 49.68 0.077 1.40 0.96 0.22 0.80 1.16 1.0 0.036 2.79 40.00 0.083 4.19 2.80 2 1.7 12.352 1.1826 14.346
9.842 5609.76 7.7 0.118 7.4 48.9 21.19 1.54%Slime Tailings 0.057 113.1 0.51 0.10 0.41 1 1.70 12.529 174.15 15.15 18 1.65% 2.6 71% 0.92 0.00 0.92 0 0.95 0.05 1.00 1.0 0.055 35.36 50.52 0.078 1.42 0.96 0.22 0.80 1.16 1.0 0.036 3.64 55.20 0.096 4.76 3.09 2 1.7 13.048 1.2492 15.154
10.006 5609.59 9.2 0.064 8.8 56.4 24.42 0.70%Sand-Slime Tailing 0.059 119.0 0.52 0.11 0.41 1 1.70 15.028 208.89 18.15 21 0.74% 2.4 47% 0.93 0.00 0.93 0 0.95 0.05 1.00 1.0 0.055 36.67 54.82 0.082 1.50 0.96 0.25 0.80 1.16 1.0 0.037 2.34 42.55 0.085 4.21 2.86 2 1.7 15.626 1.496 18.149
10.170 5609.43 12.6 0.064 12.5 12.0 5.22 0.51%Sand-Slime Tailing 0.059 119.0 0.53 0.11 0.42 1 1.70 21.318 296.32 24.91 29 0.53% 2.2 47% 0.94 0.00 0.94 0 0.95 0.06 1.00 1.0 0.055 39.04 63.95 0.092 1.69 0.96 0.29 0.80 1.16 1.0 0.037 1.72 42.73 0.086 4.17 2.93 2 1.7 21.446 2.0532 24.908
10.335 5609.27 10.7 0.069 10.6 15.8 6.85 0.65%Sand-Slime Tailing 0.059 119.0 0.54 0.12 0.42 1 1.70 17.969 249.77 21.06 24 0.68% 2.3 47% 0.95 0.00 0.95 0 0.95 0.05 0.99 1.0 0.055 37.69 58.75 0.086 1.59 0.96 0.26 0.80 1.15 1.0 0.037 2.09 43.93 0.087 4.17 2.88 2 1.7 18.137 1.7364 21.065
10.499 5609.10 9.8 0.093 9.6 39.8 17.26 0.95%Sand-Slime Tailing 0.059 119.0 0.55 0.12 0.43 1 1.70 16.235 225.67 19.35 22 1.01% 2.5 47% 0.96 0.00 0.96 0 0.95 0.05 0.99 1.0 0.054 37.09 56.43 0.084 1.54 0.96 0.25 0.80 1.15 1.0 0.037 2.57 49.77 0.091 4.36 2.95 2 1.7 16.658 1.5948 19.347
10.663 5608.94 10.0 0.042 9.7 47.3 20.49 0.42%Sand-Slime Tailing 0.059 119.0 0.56 0.13 0.43 1 1.70 16.558 230.16 19.81 22 0.44% 2.3 47% 0.97 0.00 0.97 0 0.95 0.05 0.99 1.0 0.054 37.25 57.06 0.085 1.56 0.96 0.26 0.80 1.15 1.0 0.037 1.94 38.50 0.082 3.87 2.72 2 1.7 17.06 1.6333 19.814
10.827 5608.77 11.7 0.072 11.4 46.6 20.18 0.62%Sand-Slime Tailing 0.059 119.0 0.57 0.13 0.44 1 1.69 19.231 267.31 22.91 25 0.65% 2.3 47% 0.98 0.00 0.98 0 0.95 0.05 0.99 1.0 0.054 38.33 61.24 0.089 1.64 0.96 0.28 0.80 1.15 1.0 0.037 1.97 45.15 0.088 4.09 2.87 2 1.686916 19.721 1.8881 22.905
10.991 5608.61 10.9 0.095 10.4 75.1 32.54 0.87%Sand-Slime Tailing 0.059 119.0 0.58 0.14 0.44 1 1.69 17.592 244.52 21.35 23 0.92% 2.4 47% 0.99 0.00 0.99 0 0.94 0.05 0.99 1.0 0.054 37.79 59.14 0.087 1.60 0.96 0.27 0.80 1.14 1.0 0.037 2.36 50.32 0.092 4.25 2.93 2 1.68502 18.382 1.7599 21.349
11.155 5608.45 12.8 0.156 12.4 77.1 33.42 1.22%Sand-Slime Tailing 0.059 119.0 0.59 0.15 0.45 1 1.65 20.356 282.95 24.56 27 1.27% 2.4 47% 1.00 0.00 1.00 0 0.94 0.06 0.99 1.0 0.054 38.92 63.48 0.092 1.70 0.96 0.29 0.80 1.14 1.0 0.037 2.42 59.39 0.099 4.55 3.13 2 1.64827 21.15 2.0249 24.564
11.319 5608.28 18.2 0.117 17.6 85.5 37.06 0.64%Sand-Slime Tailing 0.059 119.0 0.60 0.15 0.45 1 1.58 27.942 388.40 33.44 39 0.67% 2.1 47% 1.01 0.00 1.01 0 0.94 0.06 0.99 1.0 0.054 42.03 75.46 0.107 1.98 0.96 0.33 0.80 1.14 1.0 0.037 1.55 51.83 0.093 4.21 3.09 2 1.584035 28.788 2.7562 33.436
11.483 5608.12 21.9 0.123 21.8 24.8 10.73 0.56%Sand-Slime Tailing 0.059 119.0 0.61 0.16 0.45 1 1.55 33.650 467.74 39.36 47 0.58% 2.0 47% 1.02 0.00 1.02 0 0.94 0.06 0.99 1.0 0.054 44.11 83.47 0.117 2.18 0.96 0.36 0.80 1.14 1.0 0.037 1.37 53.90 0.095 4.24 3.21 2 1.545013 33.889 3.2445 39.360
11.647 5607.95 18.8 0.102 18.7 18.8 8.14 0.54%Sand-Slime Tailing 0.059 119.0 0.62 0.16 0.46 1 1.56 29.097 404.45 34.01 40 0.56% 2.1 47% 1.03 0.00 1.03 0 0.94 0.06 0.99 1.0 0.054 42.23 76.24 0.108 2.00 0.96 0.34 0.80 1.13 1.0 0.037 1.47 50.02 0.092 4.07 3.04 2 1.558511 29.28 2.8033 34.007
11.811 5607.79 17.1 0.083 17.0 30.1 13.06 0.48%Sand-Slime Tailing 0.059 119.0 0.63 0.17 0.46 1 1.56 26.471 367.95 31.09 36 0.50% 2.1 47% 1.04 0.00 1.04 0 0.94 0.06 0.99 1.0 0.054 41.20 72.29 0.102 1.91 0.96 0.32 0.80 1.13 1.0 0.037 1.51 46.90 0.089 3.92 2.92 2 1.561715 26.765 2.5625 31.086
11.975 5607.63 15.6 0.099 15.4 45.3 19.65 0.63%Sand-Slime Tailing 0.059 119.0 0.64 0.17 0.47 1 1.56 24.026 333.97 28.42 32 0.66% 2.2 47% 1.05 0.00 1.05 0 0.94 0.06 0.99 1.0 0.054 40.27 68.69 0.098 1.83 0.96 0.31 0.80 1.13 1.0 0.037 1.72 49.00 0.091 3.96 2.89 2 1.564224 24.469 2.3427 28.420
Scaling Factor for stress ration, rm
Volumetric Strain Ratio for Site-Specific Design Ear
Equiv. Number of Uniform Strain Cycles, N
Youd et al. (2001)
CSR
M=7.5,
s'v=1atm
0.15
Earthquake Moment Magnitude, M: 5.5
Magnitude Scaling Factor, MSF:
Equil Pore
Pressure at time of
Conditions at t1 Liquefaction Triggering Analyses Idriss & Boulanger (2008)Equil
Pore
Pressure
at t1CN qc1 qc1 qc1N
Normalized Cone
Penetration Resistance, Qt
Normalized Friction
Ratio, Fr (%)
Total Stress
at t1 Liquefiable?
1=Yes
2=No
Cyclic Stress RatioEffective
Stress at
t1
Saturated
at t1
Idriss & Boulanger (2008)
Idriss and Boulanger (2008)
Max. Horiz. Acceleration, Amax/g:
Earthquake Moment Magnitude, M:
Magnitude Scaling Factor, MSF:
WHITE MESA TAILINGS REPOSITORY LIQUEFACTION AND SEISMIC SETTLEMENT ANALYSES - 2W7-C Elev. at
Top of Layer (ft)
Elev. At
Midpoint of Layer (ft)
Bottom
of Layer (ft)
Thickness of Layer (ft)
CSR
M=7.5,
s'v=1atm
Kc
High Compaction Layer
Platform/Random Fill Layer
Pw (u2)Pw (u2)
2013 CPT Data from ConeTec CPT Data Interpretations
fs/qt
Material Type (as determined
by fines
Unit Weight Unit Weight
Total Stress
at time of CPT
Depth
at time of CPT Elevation qt fs qc
Effective Stress at
time of CPT
Saturated
at time of CPT
Type Index, Ic FC
Youd, et al (2001)
Max. Horiz. Acceleration, Amax/g:
Stress at
Bottom of Layer (tsf)
Stress at
Midpoint of Layer (tsf)FINAL COVER
Erosion Protection Layer
Water Storage/Rooting Zone Layer
qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Equil Pore
Pressure at Midpoint of Layer (tsf)
Unit Weight (tcf)
Unit Weight (pcf)
Stress at
Bottom of Layer (tsf)
Stress at
Midpoint of Layer (tsf)
Pressure
at Bottom of Layer (tsf)
Cyclic Resistance Ratio
FoS
Cyclic Stress Ratio
FoS
∆qc1n qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Liquef_SeismicSettle_30Aug2015.xls Page 17 of 36
Energy Fuels Resources (USA) Inc.
White Mesa MillLiquefaction Analyses
Data File: 13-52106_SP2W7-C-BSC-CPT 5613.10 Water surface elevation during CPT investigation (f5619.60 Ground Surface Elevation at time of CPT (ft amsl)Location: White Mesa 2013 CPT Investigation 0.15 5611.32 Water surface elevation at t0 (ft amsl)5626.65 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl)
..\..\..\6.2.3 Field Data\2013 Field Investigation\Conetec Dat 5.5 5595.40 Water surface elevation at t1 (ft amsl) 0.50 Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after pla ###### 5626.4 5626.15 0.50 0.055 110 0.028 0.014 0.00 0.00 0.028 0.014
Tailings Sands 1.69 5590.40 Water surface elevation at t2 (ft amsl)3.50 Thickness of Water Storage/Rooting Zone (ft) ###### 5624.4 5622.65 3.50 0.054 107 0.215 0.121 0.00 0.00 0.215 0.121
Tailings Sand-Slimes 4.00 Thickness of High Compaction Layer (ft)###### 5620.65 5618.65 4.00 0.060 120 0.454 0.334 0.00 0.00 0.454 0.334
Tailings Slimes 1.44 -0.95 Thickness of Random/Platform Fill on on top of existing interim cover (ft) ###### 5619.13 5619.60 -0.95 0.050 101 0.406 0.430 0.00 0.00 0.406 0.430
Interim Cover 0.47 812.44 Additional Stress due to Final Cover Placement, ΔσFC (psf)
Cells Requiring User Input/Manipulation 2.21 2.21 7.51 5590.40 Elevation of bottom of tailings (liner) (ft amsl)
rd Cσ Kσ Ka rd Dr f Kσ Ka Avg CN qc1 qc1 qc1N
(ft) (ft amsl) TSF TSF TSF (ft) PSI (%) (tcf) (pcf) (tsf)(tsf)(tsf) 1=Yes TSF MPa % (tsf)(tsf)(tsf) 1=Yes FoS TSF MPa
0=No 0=No
Scaling Factor for stress ration, rm
Volumetric Strain Ratio for Site-Specific Design Ear
Equiv. Number of Uniform Strain Cycles, N
Youd et al. (2001)
CSR
M=7.5,
s'v=1atm
0.15
Earthquake Moment Magnitude, M: 5.5
Magnitude Scaling Factor, MSF:
Equil Pore
Pressure at time of
Conditions at t1 Liquefaction Triggering Analyses Idriss & Boulanger (2008)Equil
Pore
Pressure
at t1CN qc1 qc1 qc1N
Normalized Cone
Penetration Resistance, Qt
Normalized Friction
Ratio, Fr (%)
Total Stress
at t1 Liquefiable?
1=Yes
2=No
Cyclic Stress RatioEffective
Stress at
t1
Saturated
at t1
Idriss & Boulanger (2008)
Idriss and Boulanger (2008)
Max. Horiz. Acceleration, Amax/g:
Earthquake Moment Magnitude, M:
Magnitude Scaling Factor, MSF:
WHITE MESA TAILINGS REPOSITORY LIQUEFACTION AND SEISMIC SETTLEMENT ANALYSES - 2W7-C Elev. at
Top of Layer (ft)
Elev. At
Midpoint of Layer (ft)
Bottom
of Layer (ft)
Thickness of Layer (ft)
CSR
M=7.5,
s'v=1atm
Kc
High Compaction Layer
Platform/Random Fill Layer
Pw (u2)Pw (u2)
2013 CPT Data from ConeTec CPT Data Interpretations
fs/qt
Material Type (as determined
by fines
Unit Weight Unit Weight
Total Stress
at time of CPT
Depth
at time of CPT Elevation qt fs qc
Effective Stress at
time of CPT
Saturated
at time of CPT
Type Index, Ic FC
Youd, et al (2001)
Max. Horiz. Acceleration, Amax/g:
Stress at
Bottom of Layer (tsf)
Stress at
Midpoint of Layer (tsf)FINAL COVER
Erosion Protection Layer
Water Storage/Rooting Zone Layer
qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Equil Pore
Pressure at Midpoint of Layer (tsf)
Unit Weight (tcf)
Unit Weight (pcf)
Stress at
Bottom of Layer (tsf)
Stress at
Midpoint of Layer (tsf)
Pressure
at Bottom of Layer (tsf)
Cyclic Resistance Ratio
FoS
Cyclic Stress Ratio
FoS
∆qc1n qc1n-cs
(CRR)
M=7.5,
s'v=1atm
12.139 5607.46 12.7 0.171 12.4 58.5 25.36 1.34%Sand-Slime Tailing 0.059 119.0 0.65 0.18 0.47 1 1.58 19.546 271.68 23.37 26 1.42% 2.5 47% 1.06 0.00 1.06 0 0.94 0.05 0.99 1.0 0.054 38.50 61.87 0.090 1.68 0.96 0.28 0.80 1.13 1.0 0.037 2.66 62.07 0.102 4.42 3.05 2 1.581356 20.123 1.9266 23.372
12.303 5607.30 13.0 0.141 12.6 69.8 30.26 1.09%Sand-Slime Tailing 0.059 119.0 0.66 0.18 0.48 1 1.57 19.678 273.52 23.65 26 1.14% 2.4 47% 1.07 0.00 1.07 0 0.94 0.05 0.99 1.0 0.053 38.60 62.24 0.090 1.69 0.95 0.28 0.80 1.12 1.0 0.037 2.41 56.98 0.097 4.16 2.93 2 1.567943 20.361 1.9494 23.648
12.467 5607.13 17.3 0.074 17.2 11.4 4.93 0.43%Sand-Slime Tailing 0.059 119.0 0.67 0.19 0.48 1 1.52 26.200 364.19 30.56 34 0.44% 2.1 47% 1.07 0.00 1.07 0 0.93 0.06 0.99 1.0 0.053 41.02 71.57 0.102 1.91 0.95 0.32 0.80 1.12 1.0 0.037 1.49 45.52 0.088 3.73 2.82 2 1.520626 26.308 2.5188 30.556
12.631 5606.97 14.6 0.118 14.6 12.4 5.38 0.81%Sand-Slime Tailing 0.059 119.0 0.68 0.19 0.49 1 1.53 22.293 309.87 26.03 29 0.85% 2.3 47% 1.08 0.00 1.08 0 0.93 0.06 0.99 1.0 0.053 39.43 65.46 0.094 1.77 0.95 0.29 0.80 1.12 1.0 0.038 2.00 52.19 0.093 3.92 2.84 2 1.532171 22.412 2.1457 26.030
12.795 5606.80 14.9 0.109 14.7 29.3 12.70 0.73%Sand-Slime Tailing 0.059 119.0 0.69 0.20 0.49 1 1.52 22.317 310.21 26.24 29 0.77% 2.3 47% 1.09 0.00 1.09 0 0.93 0.06 0.99 1.0 0.053 39.51 65.75 0.094 1.78 0.95 0.30 0.80 1.12 1.0 0.038 1.93 50.67 0.092 3.83 2.81 2 1.520247 22.595 2.1633 26.243
12.959 5606.64 17.4 0.213 17.4 6.0 2.59 1.23%Sand-Slime Tailing 0.059 119.0 0.70 0.20 0.50 1 1.49 25.878 359.71 30.12 34 1.28% 2.4 47% 1.10 0.00 1.10 0 0.93 0.06 0.99 1.0 0.053 40.87 70.99 0.101 1.90 0.95 0.32 0.80 1.12 1.0 0.038 2.13 64.14 0.105 4.31 3.11 2 1.491547 25.934 2.4829 30.121
13.123 5606.48 11.4 0.174 11.3 13.4 5.82 1.53%Sand-Slime Tailing 0.059 119.0 0.71 0.21 0.50 1 1.53 17.252 239.81 20.19 21 1.63% 2.6 47% 1.11 0.00 1.11 0 0.93 0.05 0.99 1.0 0.053 37.38 57.57 0.085 1.61 0.95 0.26 0.80 1.11 1.0 0.038 3.18 64.28 0.105 4.28 2.94 2 1.526744 17.38 1.664 20.186
13.287 5606.31 10.3 0.144 10.2 24.4 10.58 1.40%Sand-Slime Tailing 0.059 119.0 0.72 0.21 0.51 1 1.52 15.385 213.85 18.14 19 1.50% 2.6 47% 1.12 0.00 1.12 0 0.93 0.05 0.99 1.0 0.053 36.66 54.80 0.082 1.56 0.95 0.25 0.80 1.11 1.0 0.038 3.32 60.28 0.100 4.07 2.81 2 1.515783 15.616 1.4951 18.137
13.451 5606.15 8.1 0.085 7.9 29.0 12.57 1.05%Sand-Slime Tailing 0.059 119.0 0.73 0.22 0.51 1 1.50 11.935 165.89 14.18 14 1.15% 2.6 47% 1.13 0.00 1.13 0 0.93 0.05 0.99 1.0 0.053 35.27 49.45 0.077 1.46 0.95 0.22 0.80 1.11 1.0 0.038 3.59 50.87 0.092 3.71 2.58 2 1.504999 12.207 1.1687 14.178
13.615 5605.98 8.1 0.071 7.9 37.9 16.43 0.88%Sand-Slime Tailing 0.059 119.0 0.74 0.22 0.52 1 1.49 11.761 163.48 14.07 14 0.96% 2.6 47% 1.14 0.00 1.14 0 0.93 0.05 0.99 1.0 0.053 35.24 49.31 0.077 1.46 0.95 0.22 0.80 1.11 1.0 0.038 3.38 47.57 0.090 3.57 2.51 2 1.494389 12.115 1.1599 14.070
13.779 5605.82 8.4 0.071 8.2 32.9 14.24 0.85%Sand-Slime Tailing 0.059 119.0 0.75 0.23 0.52 1 1.48 12.139 168.73 14.45 15 0.93% 2.6 47% 1.15 0.00 1.15 0 0.92 0.05 0.99 1.0 0.053 35.37 49.82 0.077 1.47 0.95 0.22 0.80 1.11 1.0 0.038 3.27 47.31 0.089 3.53 2.50 2 1.483948 12.443 1.1913 14.452
13.943 5605.66 8.9 0.054 8.7 37.7 16.35 0.61%Sand-Slime Tailing 0.059 119.0 0.76 0.23 0.52 1 1.47 12.806 178.01 15.28 16 0.66% 2.5 47% 1.16 0.00 1.16 0 0.92 0.05 0.99 1.0 0.053 35.66 50.94 0.078 1.49 0.95 0.23 0.80 1.10 1.0 0.038 2.79 42.58 0.085 3.35 2.42 2 1.473672 13.153 1.2593 15.277
14.107 5605.49 11.6 0.101 11.4 38.4 16.62 0.87%Sand-Slime Tailing 0.059 119.0 0.77 0.24 0.53 1 1.46 16.641 231.30 19.73 20 0.93% 2.5 47% 1.17 0.00 1.17 0 0.92 0.05 0.98 1.0 0.052 37.22 56.96 0.085 1.61 0.95 0.26 0.80 1.10 1.0 0.038 2.59 51.19 0.092 3.59 2.60 2 1.463556 16.991 1.6267 19.734
14.271 5605.33 9.4 0.125 9.3 28.4 12.32 1.32%Sand-Slime Tailing 0.059 119.0 0.78 0.24 0.53 1 1.45 13.475 187.30 15.95 16 1.44% 2.6 47% 1.18 0.00 1.18 0 0.92 0.05 0.98 1.0 0.052 35.90 51.85 0.079 1.51 0.95 0.23 0.80 1.10 1.0 0.038 3.62 57.81 0.098 3.77 2.64 2 1.453597 13.733 1.3148 15.950
14.436 5605.16 8.8 0.126 8.5 40.5 17.53 1.44%Sand-Slime Tailing 0.059 119.0 0.79 0.25 0.54 1 1.44 12.287 170.78 14.69 15 1.58% 2.7 47% 1.19 0.00 1.19 0 0.92 0.05 0.98 1.0 0.052 35.45 50.15 0.078 1.48 0.95 0.22 0.80 1.10 1.0 0.038 4.01 58.88 0.099 3.78 2.63 2 1.443792 12.651 1.2112 14.694
14.600 5605.00 11.2 0.094 11.1 28.5 12.36 0.84%Sand-Slime Tailing 0.059 119.0 0.80 0.25 0.54 1 1.43 15.862 220.48 18.72 19 0.90% 2.5 47% 1.20 0.00 1.20 0 0.92 0.05 0.98 1.0 0.052 36.87 55.59 0.083 1.59 0.95 0.25 0.80 1.10 1.0 0.038 2.68 50.09 0.092 3.47 2.53 2 1.434136 16.117 1.543 18.719
14.764 5604.84 15.3 0.076 15.3 10.5 4.53 0.50%Sand-Slime Tailing 0.059 119.0 0.81 0.26 0.55 1 1.41 21.493 298.76 25.07 27 0.52% 2.3 47% 1.21 0.00 1.21 0 0.92 0.06 0.98 1.0 0.052 39.09 64.16 0.093 1.78 0.95 0.29 0.80 1.09 1.0 0.038 1.80 45.16 0.088 3.29 2.54 2 1.407553 21.585 2.0666 25.070
14.928 5604.67 15.6 0.127 15.5 13.6 5.87 0.81%Sand-Slime Tailing 0.059 119.0 0.82 0.26 0.55 1 1.40 21.691 301.51 25.33 27 0.86% 2.3 47% 1.22 0.00 1.22 0 0.92 0.06 0.98 1.0 0.052 39.19 64.52 0.093 1.79 0.95 0.29 0.80 1.09 1.0 0.038 2.10 53.28 0.094 3.51 2.65 2 1.397623 21.809 2.088 25.330
15.092 5604.51 13.7 0.155 13.6 16.5 7.13 1.13%Sand-Slime Tailing 0.059 119.0 0.82 0.27 0.56 1 1.40 19.062 264.96 22.31 23 1.20% 2.5 47% 1.23 0.00 1.23 0 0.91 0.05 0.98 1.0 0.052 38.12 60.43 0.088 1.70 0.95 0.27 0.80 1.09 1.0 0.038 2.64 58.96 0.099 3.66 2.68 2 1.400566 19.206 1.8387 22.306
15.256 5604.34 17.0 0.133 17.0 4.9 2.14 0.78%Sand-Slime Tailing 0.059 119.0 0.83 0.27 0.56 1 1.37 23.328 324.26 27.14 29 0.82% 2.3 47% 1.24 0.00 1.24 0 0.91 0.06 0.98 1.0 0.052 39.82 66.96 0.096 1.85 0.95 0.30 0.80 1.09 1.0 0.038 1.98 53.66 0.094 3.46 2.66 2 1.373842 23.37 2.2375 27.143
15.420 5604.18 13.1 0.107 13.1 3.5 1.53 0.82%Sand-Slime Tailing 0.059 119.0 0.84 0.28 0.57 1 1.39 18.162 252.45 21.13 22 0.87% 2.4 47% 1.25 0.00 1.25 0 0.91 0.05 0.98 1.0 0.052 37.71 58.84 0.087 1.68 0.95 0.27 0.80 1.09 1.0 0.038 2.44 51.47 0.093 3.37 2.52 2 1.387453 18.192 1.7417 21.129
15.584 5604.02 9.6 0.107 9.5 9.3 4.03 1.12%Sand-Slime Tailing 0.059 119.0 0.85 0.28 0.57 1 1.38 13.129 182.50 15.34 15 1.23% 2.6 47% 1.26 0.00 1.26 0 0.91 0.05 0.98 1.0 0.052 35.68 51.02 0.078 1.52 0.95 0.23 0.80 1.09 1.0 0.038 3.54 54.32 0.095 3.43 2.47 2 1.379148 13.209 1.2647 15.342
15.748 5603.85 9.8 0.122 9.7 17.6 7.63 1.24%Sand-Slime Tailing 0.059 119.0 0.86 0.29 0.58 1 1.37 13.307 184.97 15.63 16 1.36% 2.6 47% 1.27 0.00 1.27 0 0.91 0.05 0.98 1.0 0.052 35.78 51.41 0.079 1.53 0.95 0.23 0.80 1.08 1.0 0.039 3.65 57.00 0.097 3.49 2.51 2 1.370446 13.458 1.2884 15.630
15.912 5603.69 7.9 0.102 7.7 32.5 14.09 1.29%Sand-Slime Tailing 0.059 119.0 0.87 0.29 0.58 1 1.36 10.527 146.33 12.55 12 1.44% 2.8 47% 1.28 0.00 1.28 0 0.91 0.05 0.98 1.0 0.052 34.70 47.25 0.075 1.45 0.95 0.20 0.80 1.08 1.0 0.039 4.42 55.40 0.096 3.41 2.43 2 1.361867 10.804 1.0343 12.548
16.076 5603.52 8.2 0.088 7.9 46.7 20.23 1.07%Sand-Slime Tailing 0.059 119.0 0.88 0.30 0.58 1 1.35 10.719 148.99 12.91 13 1.20% 2.7 47% 1.29 0.00 1.29 0 0.91 0.05 0.98 1.0 0.051 34.83 47.74 0.075 1.46 0.95 0.21 0.80 1.08 1.0 0.039 4.03 52.01 0.093 3.29 2.38 2 1.35341 11.113 1.064 12.908
16.240 5603.36 8.7 0.081 8.3 59.6 25.83 0.93%Sand-Slime Tailing 0.059 119.0 0.89 0.30 0.59 1 1.35 11.178 155.37 13.56 13 1.04% 2.7 47% 1.30 0.00 1.30 0 0.91 0.05 0.98 1.0 0.051 35.06 48.62 0.076 1.48 0.95 0.21 0.80 1.08 1.0 0.039 3.68 49.89 0.092 3.21 2.35 2 1.345072 11.678 1.1181 13.563
16.404 5603.20 8.6 0.104 8.2 71.5 31.00 1.21%Sand-Slime Tailing 0.059 119.0 0.90 0.31 0.59 1 1.34 10.935 152.00 13.39 13 1.35% 2.7 47% 1.31 0.00 1.31 0 0.90 0.05 0.98 1.0 0.051 35.00 48.39 0.076 1.48 0.95 0.21 0.80 1.08 1.0 0.039 4.11 54.99 0.095 3.32 2.40 2 1.33685 11.532 1.1041 13.394
16.568 5603.03 9.3 0.138 8.8 83.6 36.24 1.48%Sand-Slime Tailing 0.059 119.0 0.91 0.31 0.60 1 1.33 11.719 162.90 14.42 14 1.64% 2.7 47% 1.32 0.00 1.32 0 0.90 0.05 0.98 1.0 0.051 35.36 49.78 0.077 1.51 0.94 0.22 0.80 1.08 1.0 0.039 4.21 60.68 0.101 3.48 2.50 2 1.328741 12.413 1.1884 14.417
16.732 5602.87 9.9 0.155 9.3 84.3 36.52 1.57%Sand-Slime Tailing 0.059 119.0 0.92 0.32 0.60 1 1.32 12.323 171.28 15.12 15 1.74% 2.7 47% 1.33 0.00 1.33 0 0.90 0.05 0.98 1.0 0.051 35.60 50.72 0.078 1.53 0.94 0.22 0.80 1.07 1.0 0.039 4.17 63.04 0.103 3.54 2.54 2 1.320744 13.017 1.2463 15.119
16.896 5602.70 26.6 0.355 26.0 83.4 36.16 1.34%Sand-Slime Tailing 0.059 119.0 0.93 0.32 0.61 1 1.27 33.013 458.88 39.11 42 1.39% 2.3 47% 1.34 0.00 1.34 0 0.90 0.06 0.97 1.0 0.051 44.02 83.13 0.117 2.31 0.94 0.36 0.80 1.07 1.0 0.039 1.93 75.38 0.120 4.08 3.19 2 1.268264 33.674 3.2239 39.110
17.060 5602.54 17.7 0.388 17.6 16.1 6.97 2.20%Sand-Slime Tailing 0.059 119.0 0.94 0.33 0.61 1 1.29 22.634 314.61 26.44 27 2.32% 2.6 47% 1.35 0.00 1.35 0 0.90 0.06 0.97 1.0 0.051 39.57 66.01 0.095 1.87 0.94 0.30 0.80 1.07 1.0 0.039 3.20 84.66 0.136 4.61 3.24 2 1.289668 22.763 2.1793 26.438
17.224 5602.38 12.0 0.476 11.8 26.8 11.63 3.97%Slime Tailings 0.057 113.1 0.95 0.33 0.62 1 1.30 15.332 213.11 18.06 18 4.32% 2.9 71% 1.36 0.00 1.36 0 0.90 0.05 0.98 1.0 0.051 36.38 54.44 0.082 1.62 0.94 0.25 0.80 1.07 1.0 0.039 5.61 101.37 0.177 5.94 3.78 2 1.298185 15.549 1.4887 18.059
17.388 5602.21 14.6 0.394 14.5 24.8 10.76 2.69%Slime Tailings 0.057 113.1 0.96 0.34 0.62 1 1.29 18.673 259.56 21.92 22 2.88% 2.7 71% 1.37 0.00 1.37 0 0.90 0.05 0.98 1.0 0.051 37.72 59.64 0.087 1.73 0.94 0.27 0.80 1.07 1.0 0.039 4.07 89.16 0.146 4.87 3.30 2 1.288706 18.873 1.8069 21.920
17.552 5602.05 10.6 0.341 10.5 16.3 7.05 3.20%Slime Tailings 0.057 113.1 0.97 0.34 0.62 1 1.28 13.540 188.21 15.88 15 3.53% 2.9 71% 1.38 0.00 1.38 0 0.90 0.05 0.98 1.0 0.051 35.62 51.49 0.079 1.56 0.94 0.23 0.80 1.07 1.0 0.039 5.55 88.16 0.144 4.76 3.16 2 1.284652 13.671 1.3088 15.878
17.716 5601.88 11.2 0.288 10.8 64.1 27.78 2.57%Slime Tailings 0.057 113.1 0.98 0.35 0.63 1 1.28 13.790 191.68 16.61 16 2.82% 2.8 71% 1.39 0.00 1.39 0 0.89 0.05 0.98 1.0 0.050 35.87 52.48 0.080 1.58 0.94 0.24 0.80 1.06 1.0 0.039 4.87 80.89 0.129 4.26 2.92 2 1.278005 14.301 1.3692 16.610
17.880 5601.72 12.9 0.210 12.7 33.7 14.62 1.63%Sand-Slime Tailing 0.059 119.0 0.99 0.36 0.63 1 1.27 16.138 224.31 19.05 19 1.76% 2.6 47% 1.40 0.00 1.40 0 0.89 0.05 0.97 1.0 0.050 36.98 56.04 0.084 1.66 0.94 0.25 0.80 1.06 1.0 0.039 3.58 68.22 0.110 3.58 2.62 2 1.270685 16.405 1.5706 19.054
18.044 5601.56 10.5 0.231 10.2 41.6 18.04 2.20%Slime Tailings 0.057 113.1 1.00 0.36 0.64 1 1.26 12.920 179.59 15.39 15 2.44% 2.8 71% 1.40 0.00 1.40 0 0.89 0.05 0.98 1.0 0.050 35.45 50.83 0.078 1.56 0.94 0.23 0.80 1.06 1.0 0.039 4.82 74.13 0.118 3.83 2.69 2 1.264201 13.249 1.2684 15.387
18.208 5601.39 9.1 0.184 8.6 70.9 30.71 2.03%Slime Tailings 0.057 113.1 1.01 0.37 0.64 1 1.26 10.855 150.88 13.25 13 2.28% 2.8 71% 1.41 0.00 1.41 0 0.89 0.05 0.98 1.0 0.050 34.70 47.96 0.076 1.50 0.94 0.21 0.80 1.06 1.0 0.039 5.21 69.03 0.111 3.57 2.54 2 1.257793 11.411 1.0925 13.253
18.372 5601.23 10.2 0.118 9.8 69.3 30.03 1.16%Sand-Slime Tailing 0.059 119.0 1.02 0.37 0.65 1 1.25 12.220 169.85 14.82 14 1.28% 2.7 47% 1.42 0.00 1.42 0 0.89 0.05 0.98 1.0 0.050 35.50 50.32 0.078 1.55 0.94 0.22 0.80 1.06 1.0 0.039 3.79 56.22 0.097 3.10 2.32 2 1.250732 12.761 1.2217 14.821
18.537 5601.06 10.3 0.159 9.8 81.3 35.24 1.55%Sand-Slime Tailing 0.059 119.0 1.03 0.38 0.65 1 1.24 12.152 168.91 14.85 14 1.72% 2.7 47% 1.43 0.00 1.43 0 0.89 0.05 0.98 1.0 0.050 35.51 50.36 0.078 1.55 0.94 0.22 0.80 1.06 1.0 0.039 4.27 63.40 0.104 3.31 2.43 2 1.243762 12.783 1.2238 14.847
18.701 5600.90 12.1 0.167 11.4 113.1 49.03 1.38%Sand-Slime Tailing 0.059 119.0 1.04 0.38 0.66 1 1.24 14.138 196.51 17.43 17 1.50% 2.6 47% 1.44 0.00 1.44 0 0.89 0.05 0.97 1.0 0.050 36.42 53.85 0.081 1.63 0.94 0.24 0.80 1.06 1.0 0.039 3.59 62.60 0.103 3.26 2.44 2 1.236879 15.011 1.4372 17.435
18.865 5600.74 14.0 0.166 13.5 77.6 33.64 1.19%Sand-Slime Tailing 0.059 119.0 1.05 0.39 0.66 1 1.23 16.569 230.31 19.94 20 1.29% 2.6 47% 1.45 0.00 1.45 0 0.89 0.05 0.97 1.0 0.050 37.29 57.23 0.085 1.70 0.94 0.26 0.80 1.05 1.0 0.039 3.05 60.77 0.101 3.17 2.44 2 1.230082 17.165 1.6434 19.936
19.029 5600.57 13.9 0.222 13.5 75.7 32.80 1.59%Sand-Slime Tailing 0.059 119.0 1.06 0.39 0.67 1 1.22 16.479 229.06 19.81 19 1.72% 2.6 47% 1.46 0.00 1.46 0 0.88 0.05 0.97 1.0 0.050 37.25 57.06 0.085 1.70 0.94 0.26 0.80 1.05 1.0 0.039 3.48 68.88 0.110 3.45 2.58 2 1.22337 17.057 1.633 19.811
19.193 5600.41 14.2 0.182 13.9 41.6 18.02 1.28%Sand-Slime Tailing 0.059 119.0 1.07 0.40 0.67 1 1.22 16.937 235.42 20.04 20 1.39% 2.6 47% 1.47 0.00 1.47 0 0.88 0.05 0.97 1.0 0.050 37.33 57.37 0.085 1.71 0.94 0.26 0.80 1.05 1.0 0.039 3.14 62.99 0.103 3.21 2.46 2 1.216741 17.253 1.6518 20.038
19.357 5600.24 12.2 0.148 11.8 73.0 31.64 1.21%Sand-Slime Tailing 0.059 119.0 1.08 0.40 0.67 1 1.21 14.220 197.65 17.16 16 1.33% 2.6 47% 1.48 0.00 1.48 0 0.88 0.05 0.97 1.0 0.050 36.32 53.47 0.081 1.63 0.94 0.24 0.80 1.05 1.0 0.039 3.47 59.53 0.100 3.07 2.35 2 1.210193 14.771 1.4142 17.156
19.521 5600.08 10.5 0.113 9.8 106.9 46.30 1.08%Sand-Slime Tailing 0.059 119.0 1.09 0.41 0.68 1 1.20 11.845 164.64 14.69 14 1.20% 2.7 47% 1.49 0.00 1.49 0 0.88 0.05 0.97 1.0 0.050 35.45 50.14 0.078 1.57 0.94 0.22 0.80 1.05 1.0 0.039 3.75 55.14 0.096 2.93 2.25 2 1.203725 12.648 1.2109 14.689
19.685 5599.92 10.6 0.200 9.8 131.7 57.08 1.89%Slime Tailings 0.057 113.1 1.09 0.41 0.68 1 1.20 11.716 162.86 14.75 14 2.10% 2.8 71% 1.50 0.00 1.50 0 0.88 0.05 0.97 1.0 0.049 35.22 49.98 0.077 1.57 0.94 0.22 0.80 1.05 1.0 0.039 4.71 69.55 0.111 3.39 2.48 2 1.197992 12.702 1.216 14.752
19.849 5599.75 36.3 0.300 35.3 156.8 67.96 0.83%Sand Tailings 0.062 123.5 1.10 0.42 0.69 1 1.15 40.813 567.29 48.71 51 0.85% 2.1 18% 1.51 0.00 1.51 0 0.88 0.07 0.96 1.0 0.049 34.54 83.26 0.117 2.40 0.94 0.40 0.80 1.05 1.0 0.040 1.46 71.18 0.114 3.44 2.92 2 1.154854 41.943 4.0156 48.715
20.013 5599.59 33.0 0.456 32.9 14.8 6.43 1.38%Sand-Slime Tailing 0.059 119.0 1.11 0.42 0.69 1 1.15 37.997 528.16 44.26 46 1.43% 2.3 47% 1.52 0.00 1.52 0 0.88 0.07 0.96 1.0 0.049 45.82 90.08 0.127 2.61 0.94 0.38 0.80 1.04 1.0 0.040 1.86 82.24 0.132 3.96 3.29 2 1.154221 38.104 3.6481 44.255
20.177 5599.42 18.7 0.520 18.6 13.8 5.96 2.78%Slime Tailings 0.057 113.1 1.12 0.43 0.70 1 1.17 21.803 303.07 25.44 25 2.96% 2.7 71% 1.53 0.00 1.53 0 0.87 0.06 0.97 1.0 0.049 38.95 64.39 0.093 1.90 0.94 0.29 0.80 1.04 1.0 0.040 3.80 96.63 0.164 4.90 3.40 2 1.17223 21.904 2.0971 25.440
20.341 5599.26 13.7 0.464 13.5 40.0 17.35 3.39%Slime Tailings 0.057 113.1 1.13 0.43 0.70 1 1.17 15.789 219.47 18.68 18 3.69% 2.8 71% 1.54 0.00 1.54 0 0.87 0.05 0.97 1.0 0.049 36.59 55.27 0.083 1.69 0.94 0.25 0.80 1.04 1.0 0.040 5.20 97.17 0.165 4.92 3.30 2 1.173927 16.083 1.5398 18.679
20.505 5599.10 11.5 0.373 11.1 62.3 27.01 3.25%Slime Tailings 0.057 113.1 1.14 0.44 0.71 1 1.17 12.959 180.13 15.58 15 3.61% 2.9 71% 1.55 0.00 1.55 0 0.87 0.05 0.97 1.0 0.049 35.51 51.09 0.079 1.60 0.94 0.23 0.80 1.04 1.0 0.040 5.80 90.30 0.148 4.39 3.00 2 1.168511 13.413 1.2842 15.579
20.669 5598.93 12.4 0.338 11.7 107.6 46.62 2.73%Slime Tailings 0.057 113.1 1.15 0.44 0.71 1 1.16 13.644 189.65 16.75 16 3.00% 2.8 71% 1.56 0.00 1.56 0 0.87 0.05 0.97 1.0 0.049 35.92 52.68 0.080 1.64 0.94 0.24 0.80 1.04 1.0 0.040 5.09 85.21 0.138 4.05 2.84 2 1.163152 14.425 1.3811 16.754
20.833 5598.77 13.3 0.244 12.9 67.9 29.44 1.84%Sand-Slime Tailing 0.059 119.0 1.16 0.45 0.71 1 1.16 14.894 207.02 17.87 17 2.01% 2.7 47% 1.57 0.00 1.57 0 0.87 0.05 0.97 1.0 0.049 36.57 54.44 0.082 1.68 0.93 0.24 0.80 1.04 1.0 0.040 4.06 72.57 0.116 3.38 2.53 2 1.157241 15.385 1.4729 17.868
20.997 5598.60 15.3 0.235 15.0 45.2 19.60 1.54%Sand-Slime Tailing 0.059 119.0 1.17 0.45 0.72 1 1.15 17.248 239.75 20.41 20 1.67% 2.6 47% 1.58 0.00 1.58 0 0.87 0.05 0.97 1.0 0.049 37.46 57.87 0.086 1.76 0.93 0.26 0.80 1.04 1.0 0.040 3.40 69.41 0.111 3.23 2.49 2 1.151398 17.573 1.6824 20.410
21.161 5598.44 18.4 0.276 18.0 52.8 22.87 1.50%Sand-Slime Tailing 0.059 119.0 1.18 0.46 0.72 1 1.14 20.588 286.17 24.35 24 1.61% 2.5 47% 1.59 0.00 1.59 0 0.87 0.06 0.97 1.0 0.048 38.84 63.19 0.091 1.89 0.93 0.28 0.80 1.04 1.0 0.040 2.94 71.66 0.114 3.30 2.59 2 1.141217 20.964 2.0071 24.348
21.325 5598.27 17.9 0.231 17.7 21.2 9.20 1.29%Sand-Slime Tailing 0.059 119.0 1.19 0.46 0.73 1 1.14 20.141 279.96 23.57 23 1.39% 2.5 47% 1.60 0.00 1.60 0 0.87 0.05 0.97 1.0 0.048 38.57 62.13 0.090 1.87 0.93 0.28 0.80 1.03 1.0 0.040 2.83 66.67 0.108 3.09 2.48 2 1.136632 20.292 1.9427 23.568
21.489 5598.11 12.3 0.171 12.1 31.8 13.76 1.39%Sand-Slime Tailing 0.059 119.0 1.20 0.47 0.73 1 1.13 13.736 190.93 16.21 15 1.54% 2.7 47% 1.61 0.00 1.61 0 0.86 0.05 0.97 1.0 0.048 35.99 52.20 0.080 1.65 0.93 0.23 0.80 1.03 1.0 0.040 3.91 63.32 0.104 2.96 2.30 2 1.134265 13.961 1.3366 16.215
21.653 5597.95 9.4 0.173 9.0 70.1 30.36 1.84%Slime Tailings 0.057 113.1 1.21 0.47 0.74 1 1.13 10.141 140.96 12.35 11 2.11% 2.9 71% 1.62 0.00 1.62 0 0.86 0.05 0.97 1.0 0.048 34.39 46.74 0.074 1.54 0.93 0.20 0.80 1.03 1.0 0.040 5.44 67.21 0.108 3.07 2.31 2 1.129256 10.635 1.0182 12.351
21.817 5597.78 10.2 0.308 9.6 109.8 47.60 3.01%Slime Tailings 0.057 113.1 1.22 0.48 0.74 1 1.12 10.748 149.40 13.38 12 3.41% 3.0 71% 1.63 0.00 1.63 0 0.86 0.05 0.97 1.0 0.048 34.75 48.13 0.076 1.57 0.93 0.21 0.80 1.03 1.0 0.040 6.30 84.34 0.136 3.84 2.70 2 1.124297 11.519 1.1028 13.379
21.981 5597.62 16.3 0.494 15.9 55.4 24.01 3.04%Slime Tailings 0.057 113.1 1.23 0.48 0.75 1 1.12 17.829 247.82 21.16 20 3.28% 2.8 71% 1.63 0.00 1.63 0 0.86 0.05 0.97 1.0 0.048 37.46 58.61 0.086 1.80 0.93 0.27 0.80 1.03 1.0 0.040 4.58 96.83 0.164 4.62 3.21 2 1.119211 18.216 1.744 21.157
22.145 5597.45 14.7 0.580 14.5 37.9 16.40 3.94%Slime Tailings 0.057 113.1 1.24 0.49 0.75 1 1.11 16.127 224.17 19.04 18 4.31% 2.9 71% 1.64 0.00 1.64 0 0.86 0.05 0.97 1.0 0.048 36.72 55.75 0.083 1.74 0.93 0.25 0.80 1.03 1.0 0.040 5.59 106.43 0.192 5.37 3.55 2 1.114527 16.391 1.5692 19.037
22.309 5597.29 15.8 0.533 15.5 43.5 18.86 3.38%Slime Tailings 0.057 113.1 1.25 0.49 0.75 1 1.11 17.189 238.93 20.31 19 3.67% 2.8 71% 1.65 0.00 1.65 0 0.86 0.05 0.97 1.0 0.048 37.16 57.48 0.085 1.78 0.93 0.26 0.80 1.03 1.0 0.040 4.97 100.99 0.176 4.89 3.33 2 1.109714 17.491 1.6746 20.315
22.473 5597.13 14.0 0.457 13.9 15.6 6.74 3.26%Slime Tailings 0.057 113.1 1.26 0.50 0.76 1 1.10 15.381 213.79 17.99 17 3.58% 2.9 71% 1.66 0.00 1.66 0 0.86 0.05 0.97 1.0 0.048 36.35 54.34 0.082 1.71 0.93 0.24 0.80 1.03 1.0 0.040 5.32 95.70 0.162 4.47 3.09 2 1.104948 15.488 1.4828 17.989
22.638 5596.96 22.3 0.455 22.1 22.5 9.75 2.04%Sand-Slime Tailing 0.059 119.0 1.27 0.50 0.76 1 1.09 24.213 336.55 28.30 28 2.17% 2.6 47% 1.67 0.00 1.67 0 0.85 0.06 0.96 1.0 0.048 40.23 68.53 0.098 2.06 0.93 0.31 0.80 1.02 1.0 0.040 3.07 87.01 0.141 3.89 2.97 2 1.093612 24.366 2.3328 28.300
22.802 5596.80 17.6 0.383 17.4 21.7 9.38 2.18%Sand-Slime Tailing 0.059 119.0 1.28 0.51 0.77 1 1.09 19.057 264.90 22.31 21 2.35% 2.7 47% 1.68 0.00 1.68 0 0.85 0.05 0.96 1.0 0.048 38.12 60.43 0.088 1.86 0.93 0.27 0.80 1.02 1.0 0.040 3.78 84.25 0.136 3.71 2.78 2 1.093357 19.205 1.8387 22.305
22.966 5596.63 11.2 0.327 10.7 70.0 30.33 2.93%Slime Tailings 0.057 113.1 1.28 0.51 0.77 1 1.09 11.705 162.70 14.15 13 3.31% 2.9 71% 1.69 0.00 1.69 0 0.85 0.05 0.97 1.0 0.048 35.01 49.16 0.077 1.61 0.93 0.22 0.80 1.02 1.0 0.040 6.03 85.32 0.138 3.75 2.68 2 1.089866 12.181 1.1662 14.148
23.130 5596.47 11.9 0.236 11.3 90.3 39.11 1.99%Sand-Slime Tailing 0.059 119.0 1.29 0.52 0.78 1 1.08 12.269 170.54 14.96 14 2.23% 2.8 47% 1.70 0.00 1.70 0 0.85 0.05 0.97 1.0 0.048 35.55 50.51 0.078 1.64 0.93 0.22 0.80 1.02 1.0 0.040 4.90 73.26 0.117 3.16 2.40 2 1.084767 12.88 1.2331 14.959
23.294 5596.31 13.5 0.214 12.9 103.9 45.01 1.59%Sand-Slime Tailing 0.059 119.0 1.30 0.52 0.78 1 1.08 13.874 192.85 16.93 16 1.75% 2.7 47% 1.71 0.00 1.71 0 0.85 0.05 0.97 1.0 0.047 36.24 53.17 0.081 1.70 0.93 0.24 0.80 1.02 1.0 0.040 4.04 68.45 0.110 2.96 2.33 2 1.079723 14.575 1.3954 16.927
23.458 5596.14 12.3 0.222 11.8 82.8 35.86 1.80%Sand-Slime Tailing 0.059 119.0 1.31 0.53 0.79 1 1.07 12.714 176.73 15.41 14 2.01% 2.8 47% 1.72 0.00 1.72 0 0.85 0.05 0.97 1.0 0.047 35.71 51.12 0.079 1.66 0.93 0.23 0.80 1.02 1.0 0.040 4.60 70.84 0.113 3.04 2.35 2 1.074732 13.269 1.2704 15.411
23.622 5595.98 10.7 0.234 10.1 92.5 40.09 2.19%Slime Tailings 0.057 113.1 1.32 0.53 0.79 1 1.07 10.821 150.41 13.29 12 2.50% 2.9 71% 1.73 0.00 1.73 0 0.85 0.05 0.97 1.0 0.047 34.71 48.00 0.076 1.60 0.92 0.21 0.80 1.02 1.0 0.040 5.61 74.52 0.118 3.17 2.38 2 1.0703 11.439 1.0952 13.286
23.786 5595.81 17.2 0.313 16.6 101.1 43.81 1.82%Sand-Slime Tailing 0.059 119.0 1.33 0.54 0.79 1 1.07 17.630 245.06 21.26 20 1.98% 2.6 47% 1.74 0.00 1.74 0 0.85 0.05 0.96 1.0 0.047 37.76 59.01 0.087 1.84 0.92 0.27 0.80 1.02 1.0 0.040 3.63 77.06 0.123 3.27 2.56 2 1.065253 18.302 1.7523 21.257
23.950 5595.65 18.0 0.305 17.9 11.3 4.88 1.70%Sand-Slime Tailing 0.059 119.0 1.34 0.54 0.80 1 1.06 18.952 263.44 22.10 21 1.84% 2.6 47% 1.75 0.00 1.75 0 0.84 0.05 0.96 1.0 0.047 38.05 60.15 0.088 1.88 0.92 0.27 0.80 1.02 1.0 0.040 3.41 75.45 0.120 3.18 2.53 2 1.059964 19.027 1.8216 22.098
Liquef_SeismicSettle_30Aug2015.xls Page 18 of 36
Energy Fuels Resources (USA) Inc.
White Mesa MillLiquefaction Analyses
Data File: 13-52106_SP2W7-C-BSC-CPT 5613.10 Water surface elevation during CPT investigation (f5619.60 Ground Surface Elevation at time of CPT (ft amsl)Location: White Mesa 2013 CPT Investigation 0.15 5611.32 Water surface elevation at t0 (ft amsl)5626.65 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl)
..\..\..\6.2.3 Field Data\2013 Field Investigation\Conetec Dat 5.5 5595.40 Water surface elevation at t1 (ft amsl) 0.50 Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after pla ###### 5626.4 5626.15 0.50 0.055 110 0.028 0.014 0.00 0.00 0.028 0.014
Tailings Sands 1.69 5590.40 Water surface elevation at t2 (ft amsl)3.50 Thickness of Water Storage/Rooting Zone (ft) ###### 5624.4 5622.65 3.50 0.054 107 0.215 0.121 0.00 0.00 0.215 0.121
Tailings Sand-Slimes 4.00 Thickness of High Compaction Layer (ft)###### 5620.65 5618.65 4.00 0.060 120 0.454 0.334 0.00 0.00 0.454 0.334
Tailings Slimes 1.44 -0.95 Thickness of Random/Platform Fill on on top of existing interim cover (ft) ###### 5619.13 5619.60 -0.95 0.050 101 0.406 0.430 0.00 0.00 0.406 0.430
Interim Cover 0.47 812.44 Additional Stress due to Final Cover Placement, ΔσFC (psf)
Cells Requiring User Input/Manipulation 2.21 2.21 7.51 5590.40 Elevation of bottom of tailings (liner) (ft amsl)
rd Cσ Kσ Ka rd Dr f Kσ Ka Avg CN qc1 qc1 qc1N
(ft) (ft amsl) TSF TSF TSF (ft) PSI (%) (tcf) (pcf) (tsf)(tsf)(tsf) 1=Yes TSF MPa % (tsf)(tsf)(tsf) 1=Yes FoS TSF MPa
0=No 0=No
Scaling Factor for stress ration, rm
Volumetric Strain Ratio for Site-Specific Design Ear
Equiv. Number of Uniform Strain Cycles, N
Youd et al. (2001)
CSR
M=7.5,
s'v=1atm
0.15
Earthquake Moment Magnitude, M: 5.5
Magnitude Scaling Factor, MSF:
Equil Pore
Pressure at time of
Conditions at t1 Liquefaction Triggering Analyses Idriss & Boulanger (2008)Equil
Pore
Pressure
at t1CN qc1 qc1 qc1N
Normalized Cone
Penetration Resistance, Qt
Normalized Friction
Ratio, Fr (%)
Total Stress
at t1 Liquefiable?
1=Yes
2=No
Cyclic Stress RatioEffective
Stress at
t1
Saturated
at t1
Idriss & Boulanger (2008)
Idriss and Boulanger (2008)
Max. Horiz. Acceleration, Amax/g:
Earthquake Moment Magnitude, M:
Magnitude Scaling Factor, MSF:
WHITE MESA TAILINGS REPOSITORY LIQUEFACTION AND SEISMIC SETTLEMENT ANALYSES - 2W7-C Elev. at
Top of Layer (ft)
Elev. At
Midpoint of Layer (ft)
Bottom
of Layer (ft)
Thickness of Layer (ft)
CSR
M=7.5,
s'v=1atm
Kc
High Compaction Layer
Platform/Random Fill Layer
Pw (u2)Pw (u2)
2013 CPT Data from ConeTec CPT Data Interpretations
fs/qt
Material Type (as determined
by fines
Unit Weight Unit Weight
Total Stress
at time of CPT
Depth
at time of CPT Elevation qt fs qc
Effective Stress at
time of CPT
Saturated
at time of CPT
Type Index, Ic FC
Youd, et al (2001)
Max. Horiz. Acceleration, Amax/g:
Stress at
Bottom of Layer (tsf)
Stress at
Midpoint of Layer (tsf)FINAL COVER
Erosion Protection Layer
Water Storage/Rooting Zone Layer
qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Equil Pore
Pressure at Midpoint of Layer (tsf)
Unit Weight (tcf)
Unit Weight (pcf)
Stress at
Bottom of Layer (tsf)
Stress at
Midpoint of Layer (tsf)
Pressure
at Bottom of Layer (tsf)
Cyclic Resistance Ratio
FoS
Cyclic Stress Ratio
FoS
∆qc1n qc1n-cs
(CRR)
M=7.5,
s'v=1atm
24.114 5595.49 13.6 0.288 13.4 40.7 17.64 2.12%Sand-Slime Tailing 0.059 119.0 1.35 0.55 0.80 1 1.06 14.105 196.06 16.69 15 2.35% 2.8 47% 1.76 0.00 1.76 0 0.84 0.05 0.96 1.0 0.047 36.16 52.85 0.080 1.71 0.92 0.24 0.80 1.01 1.0 0.040 4.66 77.81 0.124 3.27 2.49 2 1.055773 14.373 1.3761 16.694
24.278 5595.32 19.1 0.356 18.5 95.5 41.38 1.87%Sand-Slime Tailing 0.059 119.0 1.36 0.55 0.81 1 1.05 19.383 269.43 23.24 22 2.01% 2.6 47% 1.77 0.00 1.77 1 0.84 0.05 0.96 1.0 0.047 38.45 61.69 0.090 1.92 0.92 0.28 0.80 1.01 1.0 0.040 3.44 79.99 0.128 3.35 2.63 2 1.050021 20.009 1.9157 23.240
24.442 5595.16 19.8 0.406 19.6 24.9 10.80 2.05%Sand-Slime Tailing 0.059 119.0 1.37 0.56 0.81 1 1.05 20.495 284.88 23.99 23 2.21% 2.6 47% 1.78 0.01 1.77 1 0.84 0.06 0.96 1.0 0.047 38.72 62.71 0.091 1.94 0.92 0.28 0.80 1.01 1.0 0.040 3.52 84.43 0.136 3.55 2.74 2 1.045128 20.658 1.9778 23.993
24.606 5594.99 17.4 0.456 17.3 12.2 5.27 2.62%Slime Tailings 0.057 113.1 1.38 0.56 0.82 1 1.04 18.050 250.89 21.06 20 2.85% 2.7 71% 1.79 0.01 1.78 1 0.84 0.05 0.96 1.0 0.047 37.42 58.48 0.086 1.84 0.92 0.26 0.80 1.01 1.0 0.040 4.35 91.61 0.151 3.92 2.88 2 1.042144 18.129 1.7357 21.056
24.770 5594.83 12.0 0.315 11.9 21.2 9.17 2.62%Slime Tailings 0.057 113.1 1.39 0.57 0.82 1 1.04 12.353 171.70 14.51 13 2.96% 2.9 71% 1.80 0.02 1.78 1 0.84 0.05 0.96 1.0 0.047 35.14 49.65 0.077 1.64 0.92 0.22 0.80 1.01 1.0 0.040 5.71 82.84 0.133 3.42 2.53 2 1.038033 12.49 1.1958 14.506
24.934 5594.67 10.2 0.249 9.9 49.0 21.21 2.45%Slime Tailings 0.057 113.1 1.40 0.58 0.83 1 1.03 10.195 141.71 12.21 11 2.84% 3.0 71% 1.81 0.02 1.78 1 0.84 0.05 0.97 1.0 0.047 34.34 46.55 0.074 1.57 0.91 0.20 0.80 1.01 1.0 0.040 6.33 77.25 0.123 3.14 2.36 2 1.033939 10.511 1.0063 12.207
25.098 5594.50 10.1 0.244 9.6 79.6 34.51 2.41%Slime Tailings 0.057 113.1 1.41 0.58 0.83 1 1.03 9.897 137.57 12.09 10 2.81% 3.0 71% 1.82 0.03 1.79 1 0.83 0.05 0.97 1.0 0.047 34.30 46.39 0.074 1.57 0.91 0.20 0.80 1.01 1.0 0.041 6.34 76.70 0.122 3.10 2.33 2 1.029881 10.409 0.9966 12.090
25.262 5594.34 14.2 0.261 14.1 10.4 4.50 1.84%Sand-Slime Tailing 0.059 119.0 1.42 0.59 0.83 1 1.03 14.489 201.40 16.91 15 2.04% 2.7 47% 1.83 0.03 1.79 1 0.83 0.05 0.96 1.0 0.047 36.23 53.14 0.081 1.71 0.91 0.24 0.80 1.01 1.0 0.041 4.37 73.93 0.118 2.97 2.34 2 1.025398 14.555 1.3935 16.905
25.426 5594.17 14.1 0.415 13.8 52.2 22.60 2.93%Slime Tailings 0.057 113.1 1.43 0.59 0.84 1 1.02 14.116 196.21 16.78 15 3.26% 2.9 71% 1.83 0.04 1.80 1 0.83 0.05 0.96 1.0 0.047 35.93 52.71 0.080 1.70 0.91 0.24 0.80 1.01 1.0 0.041 5.42 91.00 0.150 3.76 2.73 2 1.021415 14.449 1.3833 16.781
25.590 5594.01 15.1 0.371 15.0 20.2 8.75 2.46%Slime Tailings 0.057 113.1 1.44 0.60 0.84 1 1.02 15.231 211.72 17.84 16 2.72% 2.8 71% 1.84 0.04 1.80 1 0.83 0.05 0.96 1.0 0.047 36.30 54.14 0.082 1.73 0.91 0.24 0.80 1.00 1.0 0.041 4.79 85.43 0.138 3.44 2.58 2 1.017468 15.36 1.4705 17.839
25.754 5593.85 12.5 0.387 12.0 70.3 30.45 3.10%Slime Tailings 0.057 113.1 1.45 0.60 0.85 1 1.01 12.203 169.62 14.69 13 3.51% 2.9 71% 1.85 0.05 1.80 1 0.83 0.05 0.96 1.0 0.047 35.20 49.89 0.077 1.63 0.91 0.22 0.80 1.00 1.0 0.041 6.13 90.06 0.148 3.67 2.65 2 1.013556 12.648 1.2109 14.690
25.918 5593.68 15.4 0.224 15.0 51.8 22.46 1.46%Sand-Slime Tailing 0.059 119.0 1.46 0.61 0.85 1 1.01 15.169 210.85 18.00 16 1.61% 2.7 47% 1.86 0.05 1.81 1 0.83 0.05 0.96 1.0 0.047 36.61 54.61 0.082 1.73 0.91 0.24 0.80 1.00 1.0 0.041 3.79 68.14 0.109 2.69 2.21 2 1.009233 15.495 1.4835 17.997
26.082 5593.52 20.6 0.226 20.5 15.0 6.51 1.10%Sand-Slime Tailing 0.059 119.0 1.47 0.61 0.86 1 1.00 20.609 286.46 24.05 22 1.18% 2.5 47% 1.87 0.06 1.81 1 0.83 0.06 0.96 1.0 0.047 38.73 62.78 0.091 1.92 0.90 0.28 0.80 1.00 1.0 0.041 2.68 64.55 0.105 2.57 2.25 2 1.004823 20.703 1.9821 24.046
26.246 5593.35 17.9 0.228 17.7 30.6 13.24 1.27%Sand-Slime Tailing 0.059 119.0 1.48 0.62 0.86 1 1.00 17.733 246.48 20.82 19 1.39% 2.6 47% 1.88 0.06 1.82 1 0.82 0.05 0.96 1.0 0.047 37.60 58.42 0.086 1.82 0.90 0.26 0.80 1.00 1.0 0.041 3.20 66.52 0.107 2.61 2.21 2 1.000711 17.924 1.716 20.817
26.410 5593.19 13.3 0.303 13.1 41.9 18.16 2.27%Slime Tailings 0.057 113.1 1.49 0.62 0.86 1 1.00 13.030 181.12 15.44 14 2.56% 2.8 71% 1.89 0.07 1.82 1 0.82 0.05 0.96 1.0 0.048 35.46 50.90 0.078 1.65 0.90 0.23 0.80 1.00 1.0 0.041 5.18 79.94 0.128 3.08 2.36 2 0.996943 13.291 1.2725 15.437
26.574 5593.03 12.3 0.204 11.9 75.2 32.58 1.65%Sand-Slime Tailing 0.059 119.0 1.50 0.63 0.87 1 0.99 11.774 163.66 14.22 12 1.88% 2.8 47% 1.90 0.07 1.83 1 0.82 0.05 0.96 1.0 0.048 35.29 49.50 0.077 1.62 0.90 0.22 0.80 1.00 1.0 0.041 4.83 68.70 0.110 2.64 2.13 2 0.99278 12.24 1.1719 14.216
26.739 5592.86 21.0 0.154 20.8 25.1 10.86 0.73%Sand-Slime Tailing 0.059 119.0 1.51 0.63 0.87 1 0.99 20.610 286.48 24.12 22 0.79% 2.4 47% 1.91 0.08 1.83 1 0.82 0.06 0.96 1.0 0.047 38.76 62.88 0.091 1.92 0.90 0.28 0.80 1.00 1.0 0.041 2.30 55.56 0.096 2.29 2.10 2 0.988954 20.765 1.988 24.117
26.903 5592.70 21.7 0.157 21.6 16.6 7.20 0.72%Sand-Slime Tailing 0.059 119.0 1.51 0.64 0.88 1 0.99 21.287 295.89 24.84 23 0.78% 2.4 47% 1.92 0.08 1.84 1 0.82 0.06 0.96 1.0 0.047 39.01 63.86 0.092 1.94 0.90 0.29 0.80 1.00 1.0 0.042 2.24 55.75 0.096 2.28 2.11 2 0.985064 21.389 2.0478 24.842
27.067 5592.53 21.5 0.222 21.4 21.0 9.11 1.03%Sand-Slime Tailing 0.059 119.0 1.52 0.64 0.88 1 0.98 20.946 291.15 24.48 23 1.11% 2.5 47% 1.93 0.09 1.84 1 0.82 0.06 0.96 1.0 0.047 38.89 63.36 0.092 1.93 0.90 0.29 0.80 0.99 1.0 0.042 2.60 63.68 0.104 2.45 2.19 2 0.981089 21.075 2.0177 24.477
27.231 5592.37 20.3 0.256 20.2 23.1 10.02 1.26%Sand-Slime Tailing 0.059 119.0 1.53 0.65 0.89 1 0.98 19.734 274.30 23.08 21 1.36% 2.5 47% 1.94 0.09 1.85 1 0.82 0.05 0.96 1.0 0.048 38.40 61.48 0.090 1.88 0.90 0.28 0.80 0.99 1.0 0.042 2.95 68.20 0.110 2.56 2.22 2 0.976931 19.875 1.9028 23.084
27.395 5592.21 26.5 0.406 26.3 23.6 10.23 1.53%Sand-Slime Tailing 0.059 119.0 1.54 0.65 0.89 1 0.97 25.657 356.63 29.97 28 1.63% 2.5 47% 1.95 0.10 1.85 1 0.82 0.06 0.96 1.0 0.047 40.81 70.78 0.101 2.12 0.89 0.32 0.80 0.99 1.0 0.042 2.66 79.84 0.127 2.96 2.54 2 0.974439 25.801 2.4701 29.966
27.559 5592.04 19.7 0.516 19.6 24.8 10.73 2.61%Sand-Slime Tailing 0.059 119.0 1.55 0.66 0.90 1 0.97 18.972 263.71 22.21 20 2.84% 2.7 47% 1.96 0.10 1.86 1 0.81 0.05 0.96 1.0 0.048 38.09 60.30 0.088 1.85 0.89 0.27 0.80 0.99 1.0 0.042 4.26 94.50 0.158 3.66 2.76 2 0.968933 19.122 1.8307 22.208
27.723 5591.88 15.4 0.486 15.2 25.6 11.08 3.16%Slime Tailings 0.057 113.1 1.56 0.66 0.90 1 0.97 14.708 204.44 17.26 15 3.51% 2.9 71% 1.97 0.11 1.86 1 0.81 0.05 0.96 1.0 0.048 36.10 53.36 0.081 1.69 0.89 0.24 0.80 0.99 1.0 0.042 5.57 96.13 0.163 3.73 2.71 2 0.965107 14.862 1.4229 17.262
27.887 5591.71 13.0 0.486 12.8 45.1 19.56 3.73%Slime Tailings 0.057 113.1 1.57 0.67 0.91 1 0.96 12.270 170.56 14.57 13 4.24% 3.0 71% 1.98 0.12 1.86 1 0.81 0.05 0.96 1.0 0.048 35.16 49.73 0.077 1.61 0.89 0.22 0.80 0.99 1.0 0.042 6.77 98.65 0.169 3.87 2.74 2 0.961637 12.541 1.2007 14.566
28.051 5591.55 11.8 0.486 11.3 75.6 32.75 4.13%Slime Tailings 0.057 113.1 1.58 0.67 0.91 1 0.96 10.818 150.37 13.09 11 4.77% 3.1 71% 1.99 0.12 1.87 1 0.81 0.05 0.96 1.0 0.048 34.65 47.74 0.075 1.57 0.89 0.21 0.80 0.99 1.0 0.042 7.64 100.00 0.173 3.93 2.75 2 0.958196 11.27 1.079 13.090
Liquef_SeismicSettle_30Aug2015.xls Page 19 of 36
Energy Fuels Resources (USA) Inc.
White Mesa MillLiquefaction Analyses
Data File: 13-52106_SP2E1-BSC-CPT 5613.10 Water surface elevation during CPT investigation (ft a5619.95 Ground Surface Elevation at time of CPT (ft amsl)Location: White Mesa 2013 CPT Investigation 0.15 5611.67 Water surface elevation at t0 (ft amsl)5630.46 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl)
..\..\..\6.2.3 Field Data\2013 Field Investigation\Conetec Dat 5.5 5595.46 Water surface elevation at t1 (ft amsl) 0.50 Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after place ###### 5630.21 5629.96 0.50 0.055 110 0.028 0.014 0.00 0.00 0.028 0.014
Tailings Sands 1.69 5590.46 Water surface elevation at t2 (ft amsl)3.50 Thickness of Water Storage/Rooting Zone (ft) ###### 5628.21 5626.46 3.50 0.054 107 0.215 0.121 0.00 0.00 0.215 0.121
Tailings Sand-Slimes 4.00 Thickness of High Compaction Layer (ft)###### 5624.46 5622.46 4.00 0.060 120 0.454 0.334 0.00 0.00 0.454 0.334
Tailings Slimes 1.44 2.51 Thickness of Random/Platform Fill on on top of existing interim cover (ft) ###### 5621.21 5619.95 2.51 0.050 101 0.580 0.517 0.00 0.00 0.580 0.517
Interim Cover 0.47 1160.95 Additional Stress due to Final Cover Placement, ΔσFC (psf)
Cells Requiring User Input/Manipulation 2.21 2.21 7.51 5590.46 Elevation of bottom of tailings (liner) (ft amsl)
rd Cσ Kσ Ka rd Dr f Kσ Ka Avg CN qc1 qc1 qc1N
(ft) (ft amsl) TSF TSF TSF (ft) PSI (%) (tcf) (pcf) (tsf)(tsf)(tsf) 1=Yes TSF MPa % (tsf)(tsf)(tsf) 1=Yes FoS TSF MPa
0=No 0=No
0.164 5619.79 13.5 0.057 13.5 -0.0 -0.01 0.42%Interim Cover 0.050 100.7 0.01 0.00 0.01 0 1.70 22.933 318.77 26.63 1632 0.42% 0.9 51% 0.59 0.00 0.59 0 1.00 0.06 1.02 1.0 0.059 39.67 66.30 0.095 1.61 0.98 0.30 0.80 2.53 1.0 0.017 1.00 26.63 0.072 174.99 88.30 2 1.7 22.933 2.1956 26.635
0.328 5619.62 36.9 0.160 36.9 0.1 0.05 0.43%Interim Cover 0.050 100.7 0.02 0.00 0.02 0 1.70 62.713 871.71 72.84 2232 0.43% 0.9 51% 0.60 0.00 0.60 0 1.00 0.09 1.03 1.0 0.060 55.88 128.72 0.200 3.35 0.97 0.49 0.75 2.65 1.0 0.016 1.00 72.84 0.116 140.58 71.97 2 1.7 62.714 6.0043 72.839
0.492 5619.46 45.5 0.725 45.5 0.2 0.09 1.59%Interim Cover 0.050 100.7 0.02 0.00 0.02 0 1.70 77.333 1074.93 89.82 1834 1.59% 1.4 51% 0.61 0.00 0.61 0 1.00 0.10 1.03 1.0 0.060 61.84 151.66 0.279 4.67 0.97 0.55 0.73 2.64 1.0 0.016 1.00 89.82 0.147 119.19 61.93 2 1.7 77.335 7.4041 89.820
0.656 5619.29 78.6 0.721 78.6 0.4 0.19 0.92%Interim Cover 0.050 100.7 0.03 0.00 0.03 0 1.70 133.671 1858.03 155.26 2379 0.92% 1.2 51% 0.61 0.00 0.61 0 1.00 0.17 1.06 1.0 0.061 84.80 240.06 1.000 16.37 0.97 0.72 0.64 3.23 1.0 0.013 1.00 155.26 0.428 259.71 138.04 2 1.7 133.68 12.798 155.256
0.820 5619.13 133.5 1.017 133.5 1.1 0.48 0.76%Interim Cover 0.050 100.7 0.04 0.00 0.04 0 1.70 226.865 3153.42 263.50 3230 0.76% 1.1 51% 0.62 0.00 0.62 0 1.00 0.30 1.10 1.0 0.063 122.79 386.30 1.000 15.76 0.97 0.94 0.60 3.37 1.0 0.013 1.00 263.50 1.000 485.59 250.68 2 1.7 226.88 21.721 263.504
0.984 5618.97 159.6 1.857 159.6 1.1 0.48 1.16%Interim Cover 0.050 100.7 0.05 0.00 0.05 0 1.70 271.388 3772.29 315.21 3220 1.16% 1.3 51% 0.63 0.00 0.63 0 1.00 0.30 1.09 1.0 0.063 140.94 456.15 1.000 15.82 0.97 1.03 0.60 3.13 1.0 0.014 1.00 315.21 1.000 404.82 210.32 2 1.7 271.4 25.984 315.214
1.148 5618.80 202.0 1.570 202.0 1.5 0.66 0.78%Interim Cover 0.050 100.7 0.06 0.00 0.06 0 1.70 343.332 4772.31 398.78 3491 0.78% 1.1 51% 0.64 0.00 0.64 0 1.00 0.30 1.09 1.0 0.063 170.26 569.04 1.000 15.87 0.97 1.15 0.60 2.95 1.0 0.015 1.00 398.78 1.000 347.12 181.50 2 1.7 343.35 32.872 398.778
1.312 5618.64 282.1 2.962 282.1 2.0 0.85 1.05%Interim Cover 0.050 100.7 0.07 0.00 0.07 0 1.70 479.536 6665.55 556.98 4267 1.05% 1.3 51% 0.65 0.00 0.65 0 1.00 0.30 1.09 1.0 0.063 225.78 782.76 1.000 15.93 0.97 1.36 0.60 2.79 1.0 0.015 1.00 556.98 1.000 303.85 159.89 2 1.7 479.56 45.913 556.976
1.476 5618.47 258.6 3.915 258.6 2.8 1.19 1.51%Interim Cover 0.050 100.7 0.07 0.00 0.07 0 1.70 439.552 6109.77 510.55 3477 1.51% 1.4 51% 0.65 0.00 0.65 0 1.00 0.30 1.08 1.0 0.063 209.49 720.03 1.000 15.99 0.97 1.30 0.60 2.66 1.0 0.016 1.00 510.55 1.000 270.20 143.09 2 1.7 439.58 42.086 510.547
1.640 5618.31 203.5 4.263 203.5 3.0 1.31 2.09%Interim Cover 0.050 100.7 0.08 0.00 0.08 0 1.70 345.933 4808.47 401.82 2462 2.10% 1.5 51% 0.66 0.00 0.66 0 1.00 0.30 1.08 1.0 0.062 171.33 573.15 1.000 16.04 0.97 1.16 0.60 2.55 1.0 0.017 1.00 401.82 1.000 243.27 129.66 2 1.7 345.97 33.123 401.818
1.804 5618.15 196.8 3.157 196.7 3.4 1.46 1.60%Interim Cover 0.050 100.7 0.09 0.00 0.09 0 1.70 334.441 4648.73 388.47 2164 1.61% 1.4 51% 0.67 0.00 0.67 0 1.00 0.30 1.07 1.0 0.062 166.65 555.12 1.000 16.10 0.97 1.14 0.60 2.46 1.0 0.017 1.00 388.47 1.000 221.25 118.67 2 1.7 334.48 32.023 388.475
1.968 5617.98 198.9 2.435 198.9 3.1 1.34 1.22%Interim Cover 0.050 100.7 0.10 0.00 0.10 0 1.70 338.113 4699.77 392.74 2005 1.22% 1.3 51% 0.68 0.00 0.68 0 1.00 0.30 1.07 1.0 0.062 168.14 560.88 1.000 16.17 0.97 1.14 0.60 2.37 1.0 0.018 1.00 392.74 1.000 202.89 109.53 2 1.7 338.15 32.374 392.736
2.133 5617.82 169.5 1.671 169.5 3.4 1.46 0.99%Interim Cover 0.050 100.7 0.11 0.00 0.11 0 1.70 288.167 4005.52 334.73 1578 0.99% 1.2 51% 0.69 0.00 0.69 0 1.00 0.30 1.07 1.0 0.062 147.79 482.52 1.000 16.23 0.97 1.06 0.60 2.30 1.0 0.019 1.00 334.73 1.000 187.35 101.79 2 1.7 288.2 27.593 334.730
2.297 5617.65 152.5 1.369 152.5 3.4 1.45 0.90%Interim Cover 0.050 100.7 0.12 0.00 0.12 0 1.70 258.952 3599.44 300.80 1318 0.90% 1.2 51% 0.70 0.00 0.70 0 1.00 0.30 1.06 1.0 0.061 135.88 436.68 1.000 16.30 0.97 1.00 0.60 2.23 1.0 0.019 1.00 300.80 1.000 174.04 95.17 2 1.69827 258.99 24.795 300.799
2.461 5617.49 96.6 1.501 96.6 1.4 0.60 1.55%Interim Cover 0.050 100.7 0.12 0.00 0.12 0 1.70 164.203 2282.42 190.73 779 1.56% 1.5 51% 0.70 0.00 0.70 0 1.00 0.24 1.05 1.0 0.060 97.25 287.98 1.000 16.57 0.97 0.80 0.60 2.17 1.0 0.020 1.00 190.73 1.000 162.50 89.54 2 1.7 164.22 15.722 190.729
2.625 5617.33 111.8 1.580 111.8 1.3 0.55 1.41%Interim Cover 0.050 100.7 0.13 0.00 0.13 0 1.70 190.060 2641.83 220.76 845 1.41% 1.5 51% 0.71 0.00 0.71 0 1.00 0.30 1.06 1.0 0.061 107.79 328.55 1.000 16.44 0.97 0.86 0.60 2.12 1.0 0.020 1.00 220.76 1.000 152.41 84.42 2 1.7 190.07 18.198 220.759
2.789 5617.16 136.8 1.973 136.8 1.2 0.50 1.44%Interim Cover 0.050 100.7 0.14 0.00 0.14 0 1.61 220.642 3066.92 256.28 973 1.44% 1.5 51% 0.72 0.00 0.72 0 0.99 0.30 1.05 1.0 0.061 120.26 376.53 1.000 16.51 0.97 0.92 0.60 2.07 1.0 0.021 1.00 256.28 1.000 143.50 80.00 2 1.61347 220.65 21.125 256.276
2.953 5617.00 124.7 1.720 124.7 1.6 0.69 1.38%Interim Cover 0.050 100.7 0.15 0.00 0.15 0 1.64 204.705 2845.41 237.77 837 1.38% 1.5 51% 0.73 0.00 0.73 0 0.99 0.30 1.05 1.0 0.060 113.76 351.53 1.000 16.58 0.97 0.89 0.60 2.02 1.0 0.021 1.00 237.77 1.000 135.58 76.08 2 1.641978 204.72 19.6 237.772
3.117 5616.83 124.7 1.712 124.7 1.4 0.61 1.37%Interim Cover 0.050 100.7 0.16 0.00 0.16 0 1.63 202.585 2815.93 235.31 793 1.37% 1.5 51% 0.74 0.00 0.74 0 0.99 0.30 1.05 1.0 0.060 112.90 348.20 1.000 16.64 0.97 0.89 0.60 1.98 1.0 0.022 1.00 235.31 1.000 128.49 72.57 2 1.625102 202.6 19.397 235.307
3.281 5616.67 121.9 1.635 121.9 1.2 0.52 1.34%Sand Tailings 0.051 102.8 0.17 0.00 0.17 0 1.62 197.463 2744.73 229.35 736 1.34% 1.5 18% 0.75 0.00 0.75 0 0.99 0.30 1.04 1.0 0.060 80.72 310.08 1.000 16.71 0.97 0.87 0.60 1.93 1.0 0.022 1.00 229.35 1.000 121.99 69.35 2 1.619873 197.47 18.906 229.355
3.445 5616.51 125.5 1.702 125.5 0.9 0.41 1.36%Sand Tailings 0.051 102.8 0.17 0.00 0.17 0 1.59 199.479 2772.75 231.69 721 1.36% 1.5 18% 0.75 0.00 0.75 0 0.99 0.30 1.04 1.0 0.060 81.32 313.02 1.000 16.78 0.97 0.88 0.60 1.90 1.0 0.022 1.00 231.69 1.000 116.12 66.45 2 1.589344 199.49 19.099 231.693
3.609 5616.34 150.5 1.842 150.5 1.6 0.68 1.22%Sand Tailings 0.051 102.8 0.18 0.00 0.18 0 1.51 226.750 3151.82 263.37 825 1.22% 1.4 18% 0.76 0.00 0.76 0 0.99 0.30 1.04 1.0 0.059 89.42 352.79 1.000 16.85 0.97 0.94 0.60 1.86 1.0 0.023 1.00 263.37 1.000 110.79 63.82 2 1.506243 226.76 21.71 263.373
3.773 5616.18 107.6 1.906 107.6 1.3 0.56 1.77%Sand Tailings 0.051 102.8 0.19 0.00 0.19 0 1.63 175.430 2438.48 203.77 563 1.78% 1.6 18% 0.77 0.00 0.77 0 0.99 0.27 1.03 1.0 0.059 74.18 277.95 1.000 16.97 0.97 0.82 0.60 1.83 1.0 0.023 1.00 203.77 1.000 105.93 61.45 2 1.631001 175.44 16.797 203.767
3.937 5616.01 87.2 1.794 87.2 1.1 0.46 2.06%Sand-Slime Tailing 0.047 93.3 0.20 0.00 0.20 0 1.70 148.257 2060.77 172.20 439 2.06% 1.7 47% 0.78 0.00 0.78 0 0.99 0.20 1.02 1.0 0.058 90.70 262.90 1.000 17.16 0.97 0.76 0.62 1.74 1.0 0.024 1.07 183.75 1.000 101.89 59.52 2 1.7 148.27 14.195 172.204
4.101 5615.85 65.2 1.491 65.2 1.0 0.41 2.29%Sand-Slime Tailing 0.047 93.3 0.21 0.00 0.21 0 1.70 110.823 1540.44 128.73 315 2.29% 1.9 47% 0.79 0.00 0.79 0 0.99 0.13 1.01 1.0 0.058 75.45 204.17 1.000 17.30 0.97 0.66 0.67 1.60 1.0 0.027 1.15 147.94 0.381 37.40 27.35 2 1.7 110.83 10.611 128.726
4.265 5615.68 46.2 1.366 46.2 0.5 0.23 2.96%Sand-Slime Tailing 0.047 93.3 0.21 0.00 0.21 0 1.70 78.506 1091.23 91.19 215 2.97% 2.0 47% 0.79 0.00 0.79 0 0.99 0.10 1.01 1.0 0.058 62.28 153.47 0.288 5.01 0.97 0.55 0.72 1.47 1.0 0.029 1.36 123.57 0.255 24.18 14.60 2 1.7 78.512 7.5167 91.186
4.429 5615.52 32.1 1.104 32.1 0.4 0.18 3.44%Slime Tailings 0.041 82.7 0.22 0.00 0.22 0 1.70 54.519 757.81 63.33 144 3.47% 2.2 71% 0.80 0.00 0.80 0 0.99 0.08 1.01 1.0 0.057 52.14 115.47 0.170 2.97 0.97 0.46 0.77 1.37 1.0 0.031 1.65 104.62 0.186 17.12 10.04 2 1.7 54.523 5.2201 63.326
4.593 5615.36 21.5 0.652 21.5 -0.3 -0.13 3.03%Slime Tailings 0.041 82.7 0.23 0.00 0.23 0 1.70 36.601 508.75 42.51 94 3.06% 2.3 71% 0.81 0.00 0.81 0 0.98 0.07 1.00 1.0 0.057 44.89 87.40 0.123 2.15 0.96 0.38 0.80 1.31 1.0 0.033 1.86 78.93 0.126 11.20 6.68 2 1.7 36.598 3.5039 42.506
4.757 5615.19 14.9 0.336 15.0 -0.3 -0.11 2.25%Sand-Slime Tailing 0.047 93.3 0.23 0.00 0.23 0 1.70 25.415 353.27 29.51 63 2.28% 2.3 47% 0.82 0.00 0.82 0 0.98 0.06 1.00 1.0 0.057 40.65 70.17 0.100 1.75 0.96 0.31 0.80 1.30 1.0 0.033 1.95 57.54 0.098 8.43 5.09 2 1.7 25.412 2.433 29.515
4.921 5615.03 12.8 0.162 12.8 2.1 0.92 1.27%Sand-Slime Tailing 0.047 93.3 0.24 0.00 0.24 0 1.70 21.675 301.28 25.20 52 1.29% 2.2 47% 0.82 0.00 0.82 0 0.98 0.06 1.00 1.0 0.057 39.14 64.34 0.093 1.63 0.96 0.29 0.80 1.29 1.0 0.033 1.68 42.30 0.085 7.12 4.37 2 1.7 21.697 2.0773 25.200
5.085 5614.86 42.1 0.172 42.1 8.1 3.53 0.41%Sand Tailings 0.051 102.8 0.25 0.00 0.25 0 1.70 71.536 994.35 83.19 167 0.41% 1.5 18% 0.83 0.00 0.83 0 0.98 0.09 1.00 1.0 0.057 43.36 126.54 0.194 3.41 0.96 0.53 0.74 1.38 1.0 0.031 1.00 83.19 0.134 10.78 7.10 2 1.7 71.622 6.8571 83.185
5.249 5614.70 49.6 0.237 49.6 -0.1 -0.03 0.48%Sand Tailings 0.051 102.8 0.26 0.00 0.26 0 1.70 84.371 1172.76 97.99 190 0.48% 1.5 18% 0.84 0.00 0.84 0 0.98 0.10 1.00 1.0 0.057 47.14 145.13 0.251 4.41 0.96 0.57 0.71 1.41 1.0 0.030 1.00 97.99 0.168 13.09 8.75 2 1.7 84.37 8.0776 97.991
5.413 5614.54 53.8 0.297 53.8 0.1 0.06 0.55%Sand Tailings 0.051 102.8 0.27 0.00 0.27 0 1.70 91.511 1272.00 106.29 200 0.55% 1.5 18% 0.85 0.00 0.85 0 0.98 0.11 1.00 1.0 0.057 49.26 155.55 0.299 5.27 0.96 0.60 0.70 1.42 1.0 0.030 1.00 106.29 0.192 14.51 9.89 2 1.7 91.512 8.7614 106.286
5.577 5614.37 52.6 0.352 52.6 -0.1 -0.03 0.67%Sand Tailings 0.051 102.8 0.28 0.00 0.28 0 1.70 89.454 1243.41 103.89 189 0.67% 1.6 18% 0.86 0.00 0.86 0 0.98 0.11 1.00 1.0 0.057 48.65 152.54 0.283 5.00 0.96 0.59 0.71 1.40 1.0 0.030 1.00 103.89 0.184 13.54 9.27 2 1.7 89.453 8.5643 103.895
5.741 5614.21 48.6 0.424 48.6 -0.1 -0.03 0.87%Sand Tailings 0.051 102.8 0.28 0.00 0.28 0 1.70 82.637 1148.65 95.98 170 0.88% 1.7 18% 0.87 0.00 0.87 0 0.98 0.10 1.00 1.0 0.057 46.63 142.60 0.241 4.27 0.96 0.57 0.72 1.37 1.0 0.031 1.04 99.63 0.172 12.26 8.27 2 1.7 82.636 7.9116 95.977
5.905 5614.04 40.4 0.469 40.4 -0.1 -0.02 1.16%Sand-Slime Tailing 0.047 93.3 0.29 0.00 0.29 0 1.70 68.646 954.18 79.73 137 1.17% 1.9 47% 0.87 0.00 0.87 0 0.98 0.09 1.00 1.0 0.056 58.26 137.99 0.226 4.00 0.96 0.52 0.74 1.32 1.0 0.032 1.15 91.53 0.151 10.51 7.26 2 1.7 68.645 6.5721 79.728
6.069 5613.88 31.5 0.463 31.5 -0.1 -0.02 1.47%Sand-Slime Tailing 0.047 93.3 0.30 0.00 0.30 0 1.70 53.584 744.82 62.23 104 1.48% 2.0 47% 0.88 0.00 0.88 0 0.98 0.08 1.00 1.0 0.056 52.13 114.36 0.168 2.98 0.96 0.46 0.77 1.27 1.0 0.033 1.32 81.85 0.131 8.87 5.93 2 1.7 53.583 5.1301 62.234
6.234 5613.72 26.6 0.418 26.6 -0.2 -0.07 1.57%Sand-Slime Tailing 0.047 93.3 0.31 0.00 0.31 0 1.70 45.254 629.03 52.56 86 1.59% 2.1 47% 0.89 0.00 0.89 0 0.98 0.07 1.00 1.0 0.056 48.73 101.29 0.145 2.57 0.96 0.42 0.79 1.24 1.0 0.034 1.44 75.88 0.121 7.97 5.27 2 1.7 45.252 4.3325 52.558
6.398 5613.55 29.2 0.352 29.2 -0.1 -0.04 1.20%Sand-Slime Tailing 0.047 93.3 0.32 0.00 0.32 0 1.70 49.674 690.47 57.69 92 1.22% 2.0 47% 0.90 0.00 0.90 0 0.97 0.08 1.00 1.0 0.056 50.54 108.23 0.157 2.79 0.96 0.44 0.78 1.25 1.0 0.034 1.29 74.59 0.119 7.65 5.22 2 1.7 49.673 4.7557 57.692
6.562 5613.39 31.3 0.327 31.3 -0.1 -0.04 1.04%Sand-Slime Tailing 0.047 93.3 0.32 0.00 0.32 0 1.70 53.244 740.09 61.84 96 1.05% 1.9 47% 0.90 0.00 0.90 0 0.97 0.08 1.00 1.0 0.056 51.99 113.83 0.167 2.98 0.96 0.45 0.77 1.25 1.0 0.034 1.23 75.92 0.121 7.60 5.29 2 1.7 53.243 5.0975 61.839
6.726 5613.22 39.3 0.336 39.4 -0.1 -0.06 0.85%Sand Tailings 0.051 102.8 0.33 0.00 0.33 0 1.70 66.713 927.31 77.48 118 0.86% 1.8 18% 0.91 0.00 0.91 0 0.97 0.09 0.99 1.0 0.056 41.90 119.38 0.178 3.19 0.96 0.51 0.75 1.27 1.0 0.033 1.12 86.56 0.140 8.62 5.90 2 1.69537 66.711 6.3869 77.481
6.890 5613.06 39.3 0.331 39.4 -0.2 -0.10 0.84%Sand Tailings 0.062 123.5 0.34 0.00 0.34 1 1.67 65.899 915.99 76.53 115 0.85% 1.8 18% 0.92 0.00 0.92 0 0.97 0.09 0.99 1.0 0.056 41.66 118.19 0.176 3.15 0.96 0.51 0.75 1.26 1.0 0.033 1.12 85.79 0.139 8.30 5.72 2 1.674687 65.897 6.3089 76.535
7.054 5612.90 38.3 0.410 38.3 -0.2 -0.07 1.07%Sand-Slime Tailing 0.059 119.0 0.35 0.01 0.34 1 1.67 63.953 888.95 74.28 110 1.08% 1.9 47% 0.93 0.00 0.93 0 0.97 0.09 0.99 1.0 0.056 56.35 130.63 0.205 3.67 0.96 0.50 0.75 1.26 1.0 0.034 1.19 88.39 0.144 8.51 6.09 2 1.671539 63.951 6.1227 74.276
7.218 5612.73 36.3 0.454 36.4 -0.2 -0.09 1.25%Sand-Slime Tailing 0.059 119.0 0.36 0.01 0.35 1 1.67 60.858 845.93 70.68 103 1.26% 2.0 47% 0.94 0.00 0.94 0 0.97 0.08 0.99 1.0 0.056 55.09 125.77 0.193 3.46 0.96 0.49 0.76 1.24 1.0 0.034 1.26 88.99 0.146 8.48 5.97 2 1.674222 60.856 5.8263 70.680
7.382 5612.57 32.3 0.463 32.3 -0.5 -0.21 1.43%Sand-Slime Tailing 0.059 119.0 0.37 0.02 0.35 1 1.69 54.740 760.88 63.57 90 1.45% 2.0 47% 0.95 0.00 0.95 0 0.97 0.08 0.99 1.0 0.056 52.60 116.17 0.172 3.09 0.96 0.46 0.77 1.23 1.0 0.034 1.37 87.13 0.142 8.14 5.62 2 1.69316 54.735 5.2403 63.571
7.546 5612.40 29.1 0.420 29.1 -0.5 -0.23 1.44%Sand-Slime Tailing 0.059 119.0 0.38 0.02 0.36 1 1.70 49.419 686.92 57.39 80 1.46% 2.1 47% 0.96 0.00 0.96 0 0.97 0.08 0.99 1.0 0.055 50.43 107.82 0.156 2.81 0.96 0.44 0.78 1.21 1.0 0.035 1.44 82.66 0.133 7.53 5.17 2 1.7 49.413 4.7308 57.391
7.710 5612.24 35.5 0.360 35.5 -0.4 -0.19 1.01%Sand-Slime Tailing 0.059 119.0 0.39 0.03 0.36 1 1.65 58.534 813.62 67.98 97 1.03% 1.9 47% 0.97 0.00 0.97 0 0.97 0.08 0.99 1.0 0.055 54.14 122.12 0.184 3.33 0.96 0.48 0.76 1.23 1.0 0.034 1.22 82.74 0.133 7.44 5.39 2 1.648375 58.529 5.6036 67.978
7.874 5612.08 29.1 0.340 29.1 -0.8 -0.33 1.17%Sand-Slime Tailing 0.059 119.0 0.40 0.03 0.37 1 1.69 48.995 681.04 56.90 78 1.19% 2.0 47% 0.98 0.00 0.98 0 0.96 0.08 0.99 1.0 0.055 50.26 107.15 0.155 2.80 0.96 0.44 0.78 1.20 1.0 0.035 1.36 77.25 0.123 6.81 4.81 2 1.685427 48.987 4.6901 56.896
8.038 5611.91 19.8 0.302 19.8 -0.8 -0.33 1.53%Sand-Slime Tailing 0.059 119.0 0.41 0.04 0.37 1 1.70 33.592 466.93 39.01 52 1.56% 2.3 47% 0.99 0.00 0.99 0 0.96 0.06 0.99 1.0 0.055 43.98 82.99 0.117 2.11 0.96 0.36 0.80 1.18 1.0 0.036 1.81 70.50 0.113 6.17 4.14 2 1.7 33.584 3.2153 39.006
8.202 5611.75 15.7 0.241 15.7 -0.7 -0.32 1.53%Sand-Slime Tailing 0.059 119.0 0.42 0.04 0.38 1 1.70 26.758 371.94 31.07 41 1.57% 2.3 47% 1.00 0.00 1.00 0 0.96 0.06 0.99 1.0 0.055 41.20 72.27 0.102 1.86 0.96 0.32 0.80 1.18 1.0 0.036 2.08 64.68 0.105 5.69 3.77 2 1.7 26.75 2.5611 31.069
8.366 5611.58 12.1 0.199 12.1 0.0 0.00 1.64%Sand-Slime Tailing 0.059 119.0 0.43 0.05 0.38 1 1.70 20.587 286.16 23.91 31 1.70% 2.5 47% 1.01 0.00 1.01 0 0.96 0.06 0.99 1.0 0.055 38.69 62.60 0.091 1.65 0.96 0.28 0.80 1.18 1.0 0.036 2.57 61.41 0.102 5.43 3.54 2 1.7 20.587 1.971 23.911
8.530 5611.42 12.2 0.172 12.2 1.6 0.68 1.41%Sand-Slime Tailing 0.059 119.0 0.44 0.05 0.39 1 1.70 20.672 287.34 24.03 30 1.47% 2.4 47% 1.02 0.00 1.02 0 0.96 0.06 0.99 1.0 0.055 38.73 62.76 0.091 1.65 0.96 0.28 0.80 1.17 1.0 0.036 2.41 57.94 0.098 5.18 3.42 2 1.7 20.689 1.9807 24.029
8.694 5611.26 15.4 0.055 15.4 3.8 1.64 0.36%Sand-Slime Tailing 0.059 119.0 0.45 0.06 0.39 1 1.70 26.197 364.14 30.47 38 0.37% 2.0 47% 1.03 0.00 1.03 0 0.96 0.06 0.99 1.0 0.055 40.99 71.46 0.101 1.85 0.96 0.32 0.80 1.17 1.0 0.036 1.36 41.48 0.085 4.42 3.13 2 1.7 26.237 2.5119 30.473
8.858 5611.09 18.3 0.062 18.3 2.3 0.99 0.34%Sand-Slime Tailing 0.059 119.0 0.46 0.06 0.40 1 1.70 31.076 431.96 36.12 45 0.35% 2.0 47% 1.04 0.00 1.04 0 0.96 0.06 0.99 1.0 0.055 42.97 79.09 0.111 2.03 0.95 0.35 0.80 1.17 1.0 0.036 1.26 45.58 0.088 4.54 3.29 2 1.7 31.1 2.9775 36.121
9.022 5610.93 16.7 0.107 16.7 1.6 0.68 0.64%Sand-Slime Tailing 0.059 119.0 0.47 0.07 0.40 1 1.70 28.441 395.33 33.05 41 0.66% 2.1 47% 1.05 0.00 1.05 0 0.96 0.06 0.99 1.0 0.055 41.89 74.95 0.106 1.94 0.95 0.33 0.80 1.17 1.0 0.036 1.51 50.04 0.092 4.68 3.31 2 1.7 28.458 2.7245 33.052
9.186 5610.76 20.6 0.079 20.6 2.3 1.01 0.38%Sand-Slime Tailing 0.059 119.0 0.48 0.07 0.41 1 1.67 34.288 476.60 39.85 50 0.39% 2.0 47% 1.06 0.00 1.06 0 0.96 0.06 0.99 1.0 0.055 44.28 84.13 0.118 2.17 0.95 0.36 0.80 1.16 1.0 0.036 1.24 49.54 0.091 4.61 3.39 2 1.668509 34.312 3.285 39.851
9.350 5610.60 19.5 0.075 19.5 1.6 0.68 0.38%Sand-Slime Tailing 0.059 119.0 0.49 0.08 0.41 1 1.67 32.552 452.47 37.83 46 0.39% 2.0 47% 1.07 0.00 1.07 0 0.96 0.06 0.99 1.0 0.054 43.57 81.39 0.115 2.10 0.95 0.36 0.80 1.16 1.0 0.036 1.27 48.15 0.090 4.50 3.30 2 1.666763 32.568 3.1181 37.826
9.514 5610.44 17.8 0.086 17.8 1.5 0.66 0.48%Sand-Slime Tailing 0.059 119.0 0.50 0.08 0.41 1 1.67 29.767 413.77 34.59 42 0.50% 2.1 47% 1.08 0.00 1.08 0 0.95 0.06 0.99 1.0 0.054 42.43 77.02 0.109 2.00 0.95 0.34 0.80 1.16 1.0 0.036 1.39 48.17 0.090 4.45 3.23 2 1.672322 29.783 2.8515 34.592
9.678 5610.27 15.7 0.078 15.6 1.8 0.77 0.50%Sand-Slime Tailing 0.059 119.0 0.51 0.09 0.42 1 1.68 26.331 366.00 30.60 36 0.52% 2.1 47% 1.09 0.00 1.09 0 0.95 0.06 0.99 1.0 0.054 41.03 71.64 0.102 1.87 0.95 0.32 0.80 1.15 1.0 0.036 1.51 46.09 0.088 4.32 3.10 2 1.683575 26.35 2.5227 30.604
9.842 5610.11 16.0 0.072 16.0 2.3 1.01 0.45%Sand-Slime Tailing 0.059 119.0 0.52 0.09 0.42 1 1.67 26.712 371.30 31.05 37 0.46% 2.1 47% 1.10 0.00 1.10 0 0.95 0.06 0.99 1.0 0.054 41.19 72.24 0.102 1.89 0.95 0.32 0.80 1.15 1.0 0.036 1.46 45.31 0.088 4.24 3.07 2 1.667416 26.736 2.5597 31.053
10.006 5609.94 15.8 0.137 15.8 2.7 1.18 0.87%Sand-Slime Tailing 0.059 119.0 0.53 0.10 0.43 1 1.66 26.226 364.54 30.49 36 0.89% 2.2 47% 1.11 0.00 1.11 0 0.95 0.06 0.99 1.0 0.054 41.00 71.49 0.101 1.87 0.95 0.32 0.80 1.15 1.0 0.037 1.79 54.55 0.095 4.55 3.21 2 1.657787 26.254 2.5136 30.493
10.170 5609.78 17.6 0.093 17.6 0.8 0.35 0.53%Sand-Slime Tailing 0.059 119.0 0.54 0.10 0.43 1 1.63 28.606 397.62 33.23 39 0.55% 2.1 47% 1.12 0.00 1.12 0 0.95 0.06 0.98 1.0 0.054 41.96 75.19 0.106 1.97 0.95 0.33 0.80 1.15 1.0 0.037 1.46 48.69 0.091 4.29 3.13 2 1.629036 28.614 2.7395 33.233
10.335 5609.62 16.3 0.209 16.3 0.9 0.39 1.28%Sand-Slime Tailing 0.059 119.0 0.55 0.11 0.44 1 1.63 26.555 369.12 30.85 36 1.33% 2.3 47% 1.13 0.00 1.13 0 0.95 0.06 0.98 1.0 0.054 41.12 71.97 0.102 1.89 0.95 0.32 0.80 1.14 1.0 0.037 2.08 64.08 0.104 4.90 3.40 2 1.630155 26.564 2.5433 30.853
10.499 5609.45 17.8 0.152 17.8 2.3 1.00 0.85%Sand-Slime Tailing 0.059 119.0 0.56 0.11 0.44 1 1.60 28.581 397.27 33.22 39 0.88% 2.2 47% 1.14 0.00 1.14 0 0.95 0.06 0.98 1.0 0.054 41.95 75.17 0.106 1.97 0.95 0.33 0.80 1.14 1.0 0.037 1.69 56.22 0.097 4.48 3.23 2 1.604757 28.604 2.7385 33.222
10.663 5609.29 19.9 0.083 19.9 0.8 0.33 0.42%Sand-Slime Tailing 0.059 119.0 0.57 0.12 0.45 1 1.58 31.420 436.73 36.50 43 0.43% 2.0 47% 1.15 0.00 1.15 0 0.95 0.06 0.98 1.0 0.054 43.10 79.60 0.112 2.09 0.95 0.35 0.80 1.14 1.0 0.037 1.33 48.51 0.090 4.16 3.12 2 1.576497 31.427 3.0088 36.501
10.827 5609.12 16.0 0.095 16.0 -0.5 -0.20 0.59%Sand-Slime Tailing 0.059 119.0 0.58 0.12 0.45 1 1.60 25.570 355.42 29.69 34 0.62% 2.2 47% 1.16 0.00 1.16 0 0.95 0.06 0.98 1.0 0.054 40.72 70.41 0.100 1.86 0.95 0.31 0.80 1.14 1.0 0.037 1.63 48.41 0.090 4.11 2.99 2 1.600097 25.565 2.4476 29.692
10.991 5608.96 13.0 0.120 13.0 0.1 0.02 0.92%Sand-Slime Tailing 0.059 119.0 0.59 0.13 0.46 1 1.62 21.109 293.42 24.52 27 0.96% 2.4 47% 1.17 0.00 1.17 0 0.94 0.06 0.98 1.0 0.054 38.90 63.42 0.092 1.71 0.95 0.29 0.80 1.14 1.0 0.037 2.17 53.19 0.094 4.24 2.97 2 1.618819 21.11 2.0211 24.518
11.155 5608.80 10.5 0.104 10.5 0.8 0.35 0.99%Sand-Slime Tailing 0.059 119.0 0.60 0.13 0.46 1 1.63 17.098 237.66 19.87 21 1.05% 2.5 47% 1.18 0.00 1.18 0 0.94 0.05 0.98 1.0 0.054 37.27 57.14 0.085 1.58 0.95 0.26 0.80 1.13 1.0 0.037 2.63 52.29 0.093 4.16 2.87 2 1.629917 17.106 1.6377 19.868
11.319 5608.63 9.8 0.058 9.8 2.8 1.20 0.59%Sand-Slime Tailing 0.059 119.0 0.60 0.14 0.47 1 1.62 15.832 220.07 18.42 20 0.63% 2.4 47% 1.19 0.00 1.19 0 0.94 0.05 0.98 1.0 0.054 36.76 55.18 0.083 1.54 0.95 0.25 0.80 1.13 1.0 0.037 2.32 42.69 0.086 3.78 2.66 2 1.617204 15.86 1.5185 18.421
11.483 5608.47 10.7 0.143 10.7 4.7 2.02 1.33%Sand-Slime Tailing 0.059 119.0 0.61 0.14 0.47 1 1.60 17.154 238.45 19.98 21 1.42% 2.5 47% 1.20 0.00 1.20 0 0.94 0.05 0.98 1.0 0.053 37.31 57.29 0.085 1.59 0.95 0.26 0.80 1.13 1.0 0.037 2.98 59.46 0.100 4.36 2.97 2 1.604714 17.201 1.6468 19.978
11.647 5608.30 9.4 0.085 9.4 6.2 2.70 0.91%Sand-Slime Tailing 0.059 119.0 0.62 0.15 0.47 1 1.59 14.889 206.96 17.37 18 0.97% 2.5 47% 1.20 0.00 1.20 0 0.94 0.05 0.98 1.0 0.053 36.39 53.76 0.081 1.52 0.95 0.24 0.80 1.13 1.0 0.037 2.83 49.19 0.091 3.95 2.73 2 1.592442 14.951 1.4314 17.365
11.811 5608.14 9.7 0.067 9.6 8.3 3.60 0.69%Sand-Slime Tailing 0.059 119.0 0.63 0.15 0.48 1 1.58 15.172 210.89 17.72 19 0.74% 2.5 47% 1.21 0.00 1.21 0 0.94 0.05 0.98 1.0 0.053 36.51 54.23 0.082 1.53 0.95 0.24 0.80 1.12 1.0 0.037 2.54 44.93 0.087 3.76 2.64 2 1.580381 15.254 1.4604 17.716
11.975 5607.98 9.5 0.042 9.4 9.2 3.97 0.44%Sand-Slime Tailing 0.059 119.0 0.64 0.16 0.48 1 1.57 14.744 204.94 17.23 18 0.48% 2.4 47% 1.22 0.00 1.22 0 0.94 0.05 0.98 1.0 0.053 36.34 53.57 0.081 1.52 0.95 0.24 0.80 1.12 1.0 0.037 2.25 38.83 0.082 3.51 2.51 2 1.568527 14.834 1.4202 17.229
Scaling Factor for stress ration, rm
Volumetric Strain Ratio for Site-Specific Design Earth
Equiv. Number of Uniform Strain Cycles, N
Youd et al. (2001)
CSR
M=7.5,
s'v=1atm
0.15
Earthquake Moment Magnitude, M: 5.5
Magnitude Scaling Factor, MSF:
Equil Pore
Pressure at time of
Conditions at t1 Liquefaction Triggering Analyses Idriss & Boulanger (2008)Equil
Pore
Pressure
at t1CN qc1 qc1 qc1N
Normalized Cone
Penetration Resistance, Qt
Normalized Friction
Ratio, Fr (%)
Total Stress
at t1 Liquefiable?
1=Yes
2=No
Cyclic Stress RatioEffective
Stress at
t1
Saturated
at t1
Idriss & Boulanger (2008)
Idriss and Boulanger (2008)
Max. Horiz. Acceleration, Amax/g:
Earthquake Moment Magnitude, M:
Magnitude Scaling Factor, MSF:
WHITE MESA TAILINGS REPOSITORY LIQUEFACTION AND SEISMIC SETTLEMENT ANALYSES - 2E1 Elev. at
Top of Layer (ft)
Elev. At
Midpoint of Layer (ft)
Bottom
of Layer (ft)
Thickness of Layer (ft)
CSR
M=7.5,
s'v=1atm
Kc
High Compaction Layer
Platform/Random Fill Layer
Pw (u2)Pw (u2)
2013 CPT Data from ConeTec CPT Data Interpretations
fs/qt
Material Type (as determined
by fines
Unit Weight Unit Weight
Total Stress
at time of CPT
Depth
at time of CPT Elevation qt fs qc
Effective Stress at
time of CPT
Saturated
at time of CPT
Type Index, Ic FC
Youd, et al (2001)
Max. Horiz. Acceleration, Amax/g:
Stress at
Bottom of Layer (tsf)
Stress at
Midpoint of Layer (tsf)FINAL COVER
Erosion Protection Layer
Water Storage/Rooting Zone Layer
qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Equil Pore
Pressure at Midpoint of Layer (tsf)
Unit Weight (tcf)
Unit Weight (pcf)
Stress at
Bottom of Layer (tsf)
Stress at
Midpoint of Layer (tsf)
Pressure
at Bottom of Layer (tsf)
Cyclic Resistance Ratio
FoS
Cyclic Stress Ratio
FoS
∆qc1n qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Liquef_SeismicSettle_30Aug2015.xls Page 20 of 36
Energy Fuels Resources (USA) Inc.
White Mesa MillLiquefaction Analyses
Data File: 13-52106_SP2E1-BSC-CPT 5613.10 Water surface elevation during CPT investigation (ft a5619.95 Ground Surface Elevation at time of CPT (ft amsl)Location: White Mesa 2013 CPT Investigation 0.15 5611.67 Water surface elevation at t0 (ft amsl)5630.46 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl)
..\..\..\6.2.3 Field Data\2013 Field Investigation\Conetec Dat 5.5 5595.46 Water surface elevation at t1 (ft amsl) 0.50 Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after place ###### 5630.21 5629.96 0.50 0.055 110 0.028 0.014 0.00 0.00 0.028 0.014
Tailings Sands 1.69 5590.46 Water surface elevation at t2 (ft amsl)3.50 Thickness of Water Storage/Rooting Zone (ft) ###### 5628.21 5626.46 3.50 0.054 107 0.215 0.121 0.00 0.00 0.215 0.121
Tailings Sand-Slimes 4.00 Thickness of High Compaction Layer (ft)###### 5624.46 5622.46 4.00 0.060 120 0.454 0.334 0.00 0.00 0.454 0.334
Tailings Slimes 1.44 2.51 Thickness of Random/Platform Fill on on top of existing interim cover (ft) ###### 5621.21 5619.95 2.51 0.050 101 0.580 0.517 0.00 0.00 0.580 0.517
Interim Cover 0.47 1160.95 Additional Stress due to Final Cover Placement, ΔσFC (psf)
Cells Requiring User Input/Manipulation 2.21 2.21 7.51 5590.46 Elevation of bottom of tailings (liner) (ft amsl)
rd Cσ Kσ Ka rd Dr f Kσ Ka Avg CN qc1 qc1 qc1N
(ft) (ft amsl) TSF TSF TSF (ft) PSI (%) (tcf) (pcf) (tsf)(tsf)(tsf) 1=Yes TSF MPa % (tsf)(tsf)(tsf) 1=Yes FoS TSF MPa
0=No 0=No
Scaling Factor for stress ration, rm
Volumetric Strain Ratio for Site-Specific Design Earth
Equiv. Number of Uniform Strain Cycles, N
Youd et al. (2001)
CSR
M=7.5,
s'v=1atm
0.15
Earthquake Moment Magnitude, M: 5.5
Magnitude Scaling Factor, MSF:
Equil Pore
Pressure at time of
Conditions at t1 Liquefaction Triggering Analyses Idriss & Boulanger (2008)Equil
Pore
Pressure
at t1CN qc1 qc1 qc1N
Normalized Cone
Penetration Resistance, Qt
Normalized Friction
Ratio, Fr (%)
Total Stress
at t1 Liquefiable?
1=Yes
2=No
Cyclic Stress RatioEffective
Stress at
t1
Saturated
at t1
Idriss & Boulanger (2008)
Idriss and Boulanger (2008)
Max. Horiz. Acceleration, Amax/g:
Earthquake Moment Magnitude, M:
Magnitude Scaling Factor, MSF:
WHITE MESA TAILINGS REPOSITORY LIQUEFACTION AND SEISMIC SETTLEMENT ANALYSES - 2E1 Elev. at
Top of Layer (ft)
Elev. At
Midpoint of Layer (ft)
Bottom
of Layer (ft)
Thickness of Layer (ft)
CSR
M=7.5,
s'v=1atm
Kc
High Compaction Layer
Platform/Random Fill Layer
Pw (u2)Pw (u2)
2013 CPT Data from ConeTec CPT Data Interpretations
fs/qt
Material Type (as determined
by fines
Unit Weight Unit Weight
Total Stress
at time of CPT
Depth
at time of CPT Elevation qt fs qc
Effective Stress at
time of CPT
Saturated
at time of CPT
Type Index, Ic FC
Youd, et al (2001)
Max. Horiz. Acceleration, Amax/g:
Stress at
Bottom of Layer (tsf)
Stress at
Midpoint of Layer (tsf)FINAL COVER
Erosion Protection Layer
Water Storage/Rooting Zone Layer
qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Equil Pore
Pressure at Midpoint of Layer (tsf)
Unit Weight (tcf)
Unit Weight (pcf)
Stress at
Bottom of Layer (tsf)
Stress at
Midpoint of Layer (tsf)
Pressure
at Bottom of Layer (tsf)
Cyclic Resistance Ratio
FoS
Cyclic Stress Ratio
FoS
∆qc1n qc1n-cs
(CRR)
M=7.5,
s'v=1atm
12.139 5607.81 8.5 0.033 8.5 11.3 4.90 0.39%Sand-Slime Tailing 0.059 119.0 0.65 0.17 0.49 1 1.56 13.171 183.08 15.43 16 0.42% 2.4 47% 1.23 0.00 1.23 0 0.94 0.05 0.98 1.0 0.053 35.71 51.14 0.079 1.48 0.95 0.23 0.80 1.12 1.0 0.037 2.37 36.59 0.080 3.39 2.44 2 1.556874 13.281 1.2715 15.425
12.303 5607.65 7.5 0.137 7.4 15.9 6.87 1.83%Slime Tailings 0.057 113.1 0.66 0.17 0.49 1 1.55 11.398 158.44 13.42 14 2.01% 2.8 71% 1.24 0.00 1.24 0 0.94 0.05 0.98 1.0 0.053 34.76 48.18 0.076 1.43 0.95 0.21 0.80 1.12 1.0 0.037 4.65 62.38 0.103 4.29 2.86 2 1.546591 11.551 1.1059 13.416
12.467 5607.48 9.8 0.166 9.7 9.9 4.27 1.70%Sand-Slime Tailing 0.059 119.0 0.67 0.18 0.50 1 1.54 14.939 207.65 17.46 18 1.82% 2.7 47% 1.25 0.00 1.25 0 0.93 0.05 0.98 1.0 0.053 36.43 53.88 0.081 1.54 0.95 0.24 0.80 1.12 1.0 0.037 3.70 64.54 0.105 4.35 2.95 2 1.535304 15.033 1.4393 17.460
12.631 5607.32 8.6 0.151 8.5 17.3 7.50 1.76%Slime Tailings 0.057 113.1 0.68 0.18 0.50 1 1.53 12.904 179.37 15.18 16 1.91% 2.7 71% 1.26 0.00 1.26 0 0.93 0.05 0.98 1.0 0.053 35.37 50.55 0.078 1.47 0.95 0.22 0.80 1.11 1.0 0.037 4.18 63.47 0.104 4.27 2.87 2 1.525341 13.069 1.2512 15.179
12.795 5607.15 13.0 0.092 12.9 18.8 8.15 0.71%Sand-Slime Tailing 0.059 119.0 0.69 0.19 0.51 1 1.51 19.343 268.87 22.67 24 0.75% 2.4 47% 1.27 0.00 1.27 0 0.93 0.05 0.98 1.0 0.053 38.25 60.92 0.089 1.69 0.95 0.27 0.80 1.11 1.0 0.037 2.14 48.49 0.090 3.69 2.69 2 1.505298 19.52 1.8688 22.671
12.959 5606.99 16.0 0.166 15.9 19.0 8.23 1.04%Sand-Slime Tailing 0.059 119.0 0.70 0.19 0.51 1 1.47 23.423 325.57 27.41 30 1.08% 2.4 47% 1.28 0.00 1.28 0 0.93 0.06 0.98 1.0 0.053 39.91 67.32 0.096 1.83 0.95 0.30 0.80 1.11 1.0 0.038 2.14 58.59 0.099 3.99 2.91 2 1.472195 23.597 2.2592 27.407
13.123 5606.83 14.4 0.162 14.3 15.8 6.85 1.13%Sand-Slime Tailing 0.059 119.0 0.71 0.20 0.52 1 1.48 21.034 292.37 24.60 26 1.19% 2.4 47% 1.29 0.00 1.29 0 0.93 0.06 0.98 1.0 0.053 38.93 63.53 0.092 1.75 0.94 0.29 0.80 1.11 1.0 0.038 2.41 59.16 0.099 3.98 2.86 2 1.475007 21.179 2.0277 24.598
13.287 5606.66 17.3 0.194 17.2 19.5 8.43 1.12%Sand-Slime Tailing 0.059 119.0 0.72 0.20 0.52 1 1.45 24.868 345.66 29.09 32 1.17% 2.4 47% 1.30 0.00 1.30 0 0.93 0.06 0.98 1.0 0.052 40.50 69.59 0.099 1.89 0.94 0.31 0.80 1.11 1.0 0.038 2.12 61.68 0.102 4.05 2.97 2 1.44579 25.043 2.3976 29.086
13.451 5606.50 19.4 0.173 19.3 8.1 3.49 0.89%Sand-Slime Tailing 0.059 119.0 0.73 0.21 0.52 1 1.43 27.509 382.38 32.03 35 0.93% 2.3 47% 1.31 0.00 1.31 0 0.93 0.06 0.97 1.0 0.052 41.54 73.57 0.104 1.99 0.94 0.33 0.80 1.10 1.0 0.038 1.82 58.33 0.098 3.88 2.94 2 1.425348 27.581 2.6406 32.033
13.615 5606.33 16.0 0.144 15.9 7.5 3.27 0.90%Sand-Slime Tailing 0.059 119.0 0.74 0.21 0.53 1 1.44 22.875 317.96 26.65 29 0.95% 2.3 47% 1.32 0.00 1.32 0 0.93 0.06 0.98 1.0 0.052 39.65 66.29 0.095 1.82 0.94 0.30 0.80 1.10 1.0 0.038 2.08 55.52 0.096 3.75 2.78 2 1.436853 22.942 2.1965 26.646
13.779 5606.17 12.6 0.124 12.5 6.8 2.94 0.99%Sand-Slime Tailing 0.059 119.0 0.75 0.22 0.53 1 1.45 18.200 252.98 21.21 22 1.05% 2.5 47% 1.33 0.00 1.33 0 0.92 0.05 0.98 1.0 0.052 37.74 58.95 0.087 1.66 0.94 0.27 0.80 1.10 1.0 0.038 2.58 54.62 0.095 3.69 2.67 2 1.451332 18.261 1.7483 21.209
13.943 5606.01 11.2 0.094 11.1 15.0 6.52 0.84%Sand-Slime Tailing 0.059 119.0 0.76 0.22 0.54 1 1.44 16.070 223.37 18.82 19 0.90% 2.5 47% 1.34 0.00 1.34 0 0.92 0.05 0.98 1.0 0.052 36.90 55.72 0.083 1.60 0.94 0.25 0.80 1.10 1.0 0.038 2.65 49.94 0.092 3.52 2.56 2 1.442557 16.206 1.5515 18.822
14.107 5605.84 10.0 0.113 9.9 19.5 8.43 1.13%Sand-Slime Tailing 0.059 119.0 0.77 0.23 0.54 1 1.43 14.143 196.59 16.63 17 1.23% 2.6 47% 1.35 0.00 1.35 0 0.92 0.05 0.98 1.0 0.052 36.13 52.76 0.080 1.54 0.94 0.24 0.80 1.10 1.0 0.038 3.29 54.75 0.095 3.63 2.59 2 1.432919 14.317 1.3707 16.628
14.271 5605.68 9.1 0.159 8.8 48.1 20.86 1.75%Slime Tailings 0.057 113.1 0.78 0.23 0.55 1 1.42 12.506 173.84 15.02 15 1.92% 2.7 71% 1.36 0.00 1.36 0 0.92 0.05 0.98 1.0 0.052 35.32 50.34 0.078 1.50 0.94 0.22 0.80 1.09 1.0 0.038 4.28 64.34 0.105 3.97 2.73 2 1.424401 12.934 1.2383 15.022
14.436 5605.51 14.3 0.207 13.9 61.3 26.57 1.45%Sand-Slime Tailing 0.059 119.0 0.79 0.24 0.55 1 1.41 19.507 271.15 23.28 24 1.54% 2.5 47% 1.37 0.00 1.37 0 0.92 0.05 0.97 1.0 0.052 38.47 61.75 0.090 1.73 0.94 0.28 0.80 1.09 1.0 0.038 2.84 66.01 0.107 4.01 2.87 2 1.405423 20.045 1.9191 23.281
14.600 5605.35 20.5 0.331 20.4 11.3 4.89 1.62%Sand-Slime Tailing 0.059 119.0 0.80 0.24 0.56 1 1.37 27.819 386.69 32.42 35 1.68% 2.4 47% 1.38 0.00 1.38 0 0.92 0.06 0.97 1.0 0.052 41.67 74.09 0.105 2.03 0.94 0.33 0.80 1.09 1.0 0.038 2.34 75.74 0.120 4.48 3.26 2 1.365022 27.915 2.6726 32.422
14.764 5605.19 14.9 0.361 14.8 6.9 3.00 2.43%Slime Tailings 0.057 113.1 0.81 0.25 0.56 1 1.39 20.567 285.88 23.96 25 2.56% 2.6 71% 1.39 0.00 1.39 0 0.92 0.06 0.97 1.0 0.052 38.43 62.39 0.091 1.75 0.94 0.28 0.80 1.09 1.0 0.038 3.55 84.93 0.137 5.07 3.41 2 1.385922 20.627 1.9748 23.957
14.928 5605.02 12.9 0.158 12.8 9.8 4.24 1.23%Sand-Slime Tailing 0.059 119.0 0.82 0.25 0.57 1 1.39 17.775 247.07 20.74 21 1.31% 2.5 47% 1.40 0.00 1.40 0 0.92 0.05 0.97 1.0 0.052 37.58 58.32 0.086 1.67 0.94 0.26 0.80 1.09 1.0 0.038 2.90 60.16 0.100 3.68 2.67 2 1.388686 17.86 1.7099 20.743
15.092 5604.86 13.3 0.157 13.3 13.5 5.85 1.18%Sand-Slime Tailing 0.059 119.0 0.83 0.26 0.57 1 1.38 18.278 254.06 21.36 22 1.25% 2.5 47% 1.41 0.00 1.41 0 0.91 0.05 0.97 1.0 0.051 37.79 59.16 0.087 1.69 0.94 0.27 0.80 1.09 1.0 0.038 2.79 59.56 0.100 3.63 2.66 2 1.378412 18.394 1.761 21.363
15.256 5604.69 16.0 0.117 16.0 9.0 3.88 0.73%Sand-Slime Tailing 0.059 119.0 0.84 0.26 0.57 1 1.36 21.654 300.99 25.24 26 0.77% 2.3 47% 1.42 0.00 1.42 0 0.91 0.06 0.97 1.0 0.051 39.15 64.39 0.093 1.81 0.94 0.29 0.80 1.08 1.0 0.038 2.04 51.53 0.093 3.35 2.58 2 1.355907 21.73 2.0804 25.238
15.420 5604.53 20.1 0.148 20.0 8.1 3.53 0.74%Sand-Slime Tailing 0.059 119.0 0.85 0.27 0.58 1 1.33 26.610 369.88 30.98 33 0.77% 2.2 47% 1.43 0.00 1.43 0 0.91 0.06 0.97 1.0 0.051 41.17 72.15 0.102 2.00 0.94 0.32 0.80 1.08 1.0 0.038 1.78 55.03 0.095 3.42 2.71 2 1.330494 26.677 2.5541 30.984
15.584 5604.37 17.1 0.147 17.1 5.0 2.18 0.86%Sand-Slime Tailing 0.059 119.0 0.86 0.27 0.58 1 1.34 22.799 316.91 26.53 28 0.90% 2.3 47% 1.44 0.00 1.44 0 0.91 0.06 0.97 1.0 0.051 39.61 66.13 0.095 1.86 0.94 0.30 0.80 1.08 1.0 0.038 2.09 55.54 0.096 3.41 2.64 2 1.33562 22.841 2.1868 26.529
15.748 5604.20 24.6 0.148 24.6 5.9 2.55 0.60%Sand-Slime Tailing 0.059 119.0 0.87 0.28 0.59 1 1.30 31.972 444.41 37.19 40 0.62% 2.1 47% 1.45 0.00 1.45 0 0.91 0.06 0.97 1.0 0.051 43.34 80.53 0.113 2.23 0.94 0.35 0.80 1.08 1.0 0.038 1.50 55.66 0.096 3.39 2.81 2 1.300215 32.02 3.0656 37.189
15.912 5604.04 28.1 0.259 28.1 1.3 0.58 0.92%Sand-Slime Tailing 0.059 119.0 0.88 0.28 0.59 1 1.28 36.048 501.07 41.88 46 0.95% 2.2 47% 1.46 0.00 1.46 0 0.91 0.07 0.97 1.0 0.051 44.99 86.87 0.122 2.41 0.94 0.37 0.80 1.08 1.0 0.038 1.60 66.81 0.108 3.78 3.10 2 1.283307 36.059 3.4523 41.880
16.076 5603.87 18.4 0.329 18.4 2.2 0.96 1.79%Sand-Slime Tailing 0.059 119.0 0.89 0.29 0.60 1 1.31 24.074 334.62 27.98 29 1.88% 2.5 47% 1.47 0.00 1.47 0 0.91 0.06 0.97 1.0 0.051 40.11 68.10 0.097 1.91 0.94 0.31 0.80 1.08 1.0 0.038 2.76 77.26 0.123 4.28 3.10 2 1.308352 24.092 2.3065 27.981
16.240 5603.71 15.8 0.279 15.8 3.6 1.57 1.76%Sand-Slime Tailing 0.059 119.0 0.90 0.29 0.60 1 1.31 20.712 287.90 24.09 25 1.87% 2.6 47% 1.48 0.00 1.48 0 0.91 0.06 0.97 1.0 0.051 38.75 62.84 0.091 1.79 0.94 0.28 0.80 1.07 1.0 0.038 3.07 74.03 0.118 4.07 2.93 2 1.31174 20.742 1.9858 24.091
16.404 5603.55 16.9 0.229 16.8 5.1 2.20 1.36%Sand-Slime Tailing 0.059 119.0 0.91 0.30 0.61 1 1.30 21.871 304.00 25.45 26 1.44% 2.5 47% 1.49 0.00 1.49 0 0.90 0.06 0.97 1.0 0.051 39.23 64.68 0.093 1.84 0.94 0.29 0.80 1.07 1.0 0.039 2.62 66.75 0.108 3.69 2.77 2 1.300283 21.912 2.0979 25.449
16.568 5603.38 15.2 0.239 15.2 7.9 3.42 1.57%Sand-Slime Tailing 0.059 119.0 0.92 0.30 0.61 1 1.30 19.693 273.73 22.95 23 1.67% 2.5 47% 1.50 0.00 1.50 0 0.90 0.05 0.97 1.0 0.051 38.35 61.30 0.089 1.76 0.94 0.28 0.80 1.07 1.0 0.039 3.03 69.61 0.111 3.79 2.78 2 1.299836 19.757 1.8915 22.946
16.732 5603.22 13.1 0.158 13.0 11.1 4.82 1.21%Sand-Slime Tailing 0.059 119.0 0.93 0.31 0.62 1 1.30 16.874 234.55 19.70 20 1.30% 2.6 47% 1.51 0.00 1.51 0 0.90 0.05 0.97 1.0 0.051 37.21 56.91 0.085 1.67 0.94 0.26 0.80 1.07 1.0 0.039 3.05 60.03 0.100 3.39 2.53 2 1.298003 16.964 1.6241 19.703
16.896 5603.05 15.1 0.126 15.0 13.3 5.78 0.84%Sand-Slime Tailing 0.059 119.0 0.93 0.31 0.62 1 1.29 19.254 267.63 22.49 23 0.89% 2.4 47% 1.52 0.00 1.52 0 0.90 0.05 0.97 1.0 0.050 38.19 60.67 0.089 1.76 0.94 0.27 0.80 1.07 1.0 0.039 2.38 53.50 0.094 3.16 2.46 2 1.286162 19.361 1.8536 22.486
17.060 5602.89 12.8 0.181 12.7 13.0 5.63 1.41%Sand-Slime Tailing 0.059 119.0 0.94 0.32 0.63 1 1.28 16.345 227.19 19.10 19 1.52% 2.6 47% 1.53 0.00 1.53 0 0.90 0.05 0.97 1.0 0.050 37.00 56.11 0.084 1.66 0.94 0.25 0.80 1.07 1.0 0.039 3.34 63.84 0.104 3.47 2.57 2 1.282937 16.449 1.5748 19.104
17.224 5602.73 12.9 0.200 12.8 18.8 8.16 1.55%Sand-Slime Tailing 0.059 119.0 0.95 0.32 0.63 1 1.28 16.340 227.12 19.15 19 1.67% 2.6 47% 1.53 0.00 1.53 0 0.90 0.05 0.97 1.0 0.050 37.02 56.17 0.084 1.66 0.94 0.25 0.80 1.06 1.0 0.039 3.48 66.58 0.107 3.56 2.61 2 1.275552 16.49 1.5787 19.152
17.388 5602.56 12.5 0.226 12.4 18.9 8.17 1.81%Sand-Slime Tailing 0.059 119.0 0.96 0.33 0.64 1 1.27 15.676 217.89 18.38 18 1.96% 2.7 47% 1.54 0.00 1.54 0 0.90 0.05 0.97 1.0 0.050 36.75 55.13 0.083 1.64 0.93 0.25 0.80 1.06 1.0 0.039 3.85 70.78 0.113 3.71 2.68 2 1.268263 15.825 1.5151 18.380
17.552 5602.40 10.1 0.119 9.9 19.4 8.42 1.18%Sand-Slime Tailing 0.059 119.0 0.97 0.33 0.64 1 1.26 12.535 174.24 14.74 14 1.31% 2.7 47% 1.55 0.00 1.55 0 0.90 0.05 0.97 1.0 0.050 35.47 50.21 0.078 1.54 0.93 0.22 0.80 1.06 1.0 0.039 3.82 56.34 0.097 3.16 2.35 2 1.261069 12.688 1.2147 14.736
17.716 5602.23 11.0 0.133 10.8 23.1 10.02 1.21%Sand-Slime Tailing 0.059 119.0 0.98 0.34 0.64 1 1.25 13.593 188.94 16.00 16 1.33% 2.6 47% 1.56 0.00 1.56 0 0.89 0.05 0.97 1.0 0.050 35.91 51.91 0.079 1.58 0.93 0.23 0.80 1.06 1.0 0.039 3.62 57.91 0.098 3.18 2.38 2 1.253967 13.774 1.3187 15.998
17.880 5602.07 10.6 0.104 10.5 25.6 11.08 0.98%Sand-Slime Tailing 0.059 119.0 0.99 0.34 0.65 1 1.25 13.043 181.30 15.38 15 1.08% 2.6 47% 1.57 0.00 1.57 0 0.89 0.05 0.97 1.0 0.050 35.70 51.08 0.079 1.57 0.93 0.23 0.80 1.06 1.0 0.039 3.44 52.94 0.094 3.02 2.29 2 1.246955 13.242 1.2678 15.380
18.044 5601.91 15.6 0.215 15.4 27.3 11.85 1.38%Sand-Slime Tailing 0.059 119.0 1.00 0.35 0.65 1 1.24 19.083 265.26 22.41 22 1.47% 2.5 47% 1.58 0.00 1.58 0 0.89 0.05 0.97 1.0 0.050 38.16 60.57 0.088 1.77 0.93 0.27 0.80 1.06 1.0 0.039 2.95 66.15 0.107 3.42 2.60 2 1.236754 19.294 1.8472 22.409
18.208 5601.74 11.4 0.182 11.3 22.1 9.59 1.59%Sand-Slime Tailing 0.059 119.0 1.01 0.35 0.66 1 1.23 13.923 193.53 16.37 16 1.75% 2.7 47% 1.59 0.00 1.59 0 0.89 0.05 0.97 1.0 0.050 36.04 52.41 0.080 1.60 0.93 0.23 0.80 1.06 1.0 0.039 4.00 65.53 0.106 3.37 2.49 2 1.233196 14.093 1.3493 16.368
18.372 5601.58 9.5 0.143 9.3 33.5 14.51 1.50%Sand-Slime Tailing 0.059 119.0 1.02 0.36 0.66 1 1.23 11.418 158.71 13.56 13 1.68% 2.8 47% 1.60 0.00 1.60 0 0.89 0.05 0.97 1.0 0.050 35.06 48.62 0.076 1.53 0.93 0.21 0.80 1.05 1.0 0.039 4.53 61.47 0.102 3.21 2.37 2 1.226446 11.675 1.1177 13.559
18.537 5601.41 16.2 0.140 15.9 56.4 24.43 0.86%Sand-Slime Tailing 0.059 119.0 1.03 0.36 0.67 1 1.22 19.318 268.52 22.93 23 0.92% 2.4 47% 1.61 0.00 1.61 0 0.89 0.05 0.97 1.0 0.050 38.34 61.28 0.089 1.80 0.93 0.28 0.80 1.05 1.0 0.039 2.40 55.11 0.096 3.00 2.40 2 1.215729 19.746 1.8905 22.934
18.701 5601.25 17.9 0.177 17.7 23.0 9.97 0.99%Sand-Slime Tailing 0.059 119.0 1.04 0.37 0.67 1 1.21 21.370 297.05 25.02 25 1.05% 2.4 47% 1.62 0.00 1.62 0 0.89 0.06 0.96 1.0 0.049 39.08 64.10 0.093 1.87 0.93 0.29 0.80 1.05 1.0 0.039 2.38 59.44 0.100 3.10 2.49 2 1.205321 21.543 2.0626 25.021
18.865 5601.09 14.9 0.143 14.7 24.5 10.62 0.96%Sand-Slime Tailing 0.059 119.0 1.05 0.37 0.68 1 1.21 17.787 247.23 20.87 20 1.03% 2.5 47% 1.63 0.00 1.63 0 0.89 0.05 0.97 1.0 0.049 37.62 58.49 0.086 1.74 0.93 0.26 0.80 1.05 1.0 0.039 2.70 56.46 0.097 3.00 2.37 2 1.206689 17.971 1.7206 20.872
19.029 5600.92 18.2 0.189 18.2 13.4 5.82 1.04%Sand-Slime Tailing 0.059 119.0 1.06 0.38 0.68 1 1.19 21.656 301.01 25.27 25 1.10% 2.4 47% 1.64 0.00 1.64 0 0.88 0.06 0.96 1.0 0.049 39.16 64.43 0.093 1.89 0.93 0.29 0.80 1.05 1.0 0.039 2.41 60.84 0.101 3.11 2.50 2 1.192486 21.755 2.0829 25.268
19.193 5600.76 15.7 0.226 15.6 17.1 7.41 1.44%Sand-Slime Tailing 0.059 119.0 1.07 0.39 0.69 1 1.19 18.615 258.74 21.77 21 1.54% 2.6 47% 1.65 0.00 1.65 0 0.88 0.05 0.97 1.0 0.049 37.94 59.70 0.088 1.78 0.93 0.27 0.80 1.05 1.0 0.039 3.11 67.59 0.109 3.32 2.55 2 1.192482 18.742 1.7944 21.768
19.357 5600.59 12.4 0.221 12.1 42.6 18.48 1.79%Sand-Slime Tailing 0.059 119.0 1.08 0.39 0.69 1 1.19 14.370 199.75 17.06 16 1.96% 2.7 47% 1.66 0.00 1.66 0 0.88 0.05 0.97 1.0 0.049 36.28 53.34 0.081 1.64 0.93 0.24 0.80 1.04 1.0 0.039 4.12 70.25 0.112 3.41 2.52 2 1.187643 14.687 1.4061 17.058
19.521 5600.43 15.2 0.223 14.8 64.4 27.89 1.47%Sand-Slime Tailing 0.059 119.0 1.09 0.40 0.70 1 1.18 17.474 242.88 20.85 20 1.58% 2.6 47% 1.67 0.00 1.67 0 0.88 0.05 0.96 1.0 0.049 37.61 58.46 0.086 1.76 0.93 0.26 0.80 1.04 1.0 0.039 3.25 67.72 0.109 3.29 2.52 2 1.181446 17.948 1.7184 20.846
19.685 5600.27 12.3 0.248 12.1 35.7 15.47 2.01%Sand-Slime Tailing 0.059 119.0 1.10 0.40 0.70 1 1.18 14.233 197.84 16.84 16 2.21% 2.8 47% 1.68 0.00 1.68 0 0.88 0.05 0.97 1.0 0.049 36.21 53.04 0.080 1.64 0.93 0.24 0.80 1.04 1.0 0.039 4.39 73.96 0.118 3.53 2.59 2 1.175321 14.495 1.3878 16.835
19.849 5600.10 12.3 0.010 12.0 55.6 24.11 0.08%Sand-Slime Tailing 0.059 119.0 1.11 0.41 0.70 1 1.17 14.008 194.71 16.74 16 0.09% 2.3 47% 1.69 0.00 1.69 0 0.88 0.05 0.97 1.0 0.049 36.17 52.91 0.080 1.64 0.93 0.24 0.80 1.04 1.0 0.039 1.87 31.30 0.076 2.27 1.96 2 1.169269 14.414 1.38 16.741
20.013 5599.94 16.7 0.105 16.5 32.1 13.89 0.63%Sand-Slime Tailing 0.059 119.0 1.12 0.41 0.71 1 1.16 19.178 266.58 22.54 22 0.67% 2.4 47% 1.70 0.00 1.70 0 0.88 0.05 0.96 1.0 0.049 38.21 60.75 0.089 1.82 0.93 0.27 0.80 1.04 1.0 0.039 2.20 49.63 0.091 2.72 2.27 2 1.160922 19.411 1.8584 22.544
20.177 5599.77 11.0 0.151 11.0 8.6 3.72 1.37%Sand-Slime Tailing 0.059 119.0 1.13 0.42 0.71 1 1.16 12.696 176.48 14.82 14 1.53% 2.7 47% 1.71 0.00 1.71 0 0.87 0.05 0.97 1.0 0.049 35.50 50.32 0.078 1.59 0.92 0.22 0.80 1.04 1.0 0.039 4.13 61.27 0.101 3.00 2.30 2 1.157375 12.758 1.2215 14.818
20.341 5599.61 16.5 0.104 16.4 12.3 5.34 0.63%Sand-Slime Tailing 0.059 119.0 1.14 0.42 0.72 1 1.15 18.850 262.02 22.00 21 0.68% 2.4 47% 1.72 0.00 1.72 0 0.87 0.05 0.96 1.0 0.049 38.02 60.01 0.088 1.81 0.92 0.27 0.80 1.04 1.0 0.039 2.25 49.58 0.091 2.69 2.25 2 1.150108 18.939 1.8132 21.996
20.505 5599.45 26.3 0.244 26.2 16.8 7.29 0.93%Sand-Slime Tailing 0.059 119.0 1.15 0.43 0.72 1 1.13 29.559 410.87 34.47 35 0.97% 2.3 47% 1.73 0.00 1.73 0 0.87 0.06 0.96 1.0 0.048 42.39 76.86 0.108 2.25 0.92 0.34 0.80 1.04 1.0 0.039 1.88 64.63 0.105 3.08 2.66 2 1.130354 29.678 2.8413 34.469
20.669 5599.28 18.0 0.319 18.0 11.3 4.89 1.77%Sand-Slime Tailing 0.059 119.0 1.16 0.43 0.73 1 1.14 20.422 283.87 23.81 23 1.89% 2.6 47% 1.74 0.00 1.74 0 0.87 0.05 0.96 1.0 0.048 38.65 62.46 0.091 1.87 0.92 0.28 0.80 1.03 1.0 0.039 3.22 76.70 0.122 3.55 2.71 2 1.13646 20.502 1.9629 23.812
20.833 5599.12 15.8 0.362 15.7 15.0 6.52 2.29%Sand-Slime Tailing 0.059 119.0 1.17 0.44 0.73 1 1.13 17.855 248.19 20.86 20 2.47% 2.7 47% 1.75 0.00 1.75 0 0.87 0.05 0.96 1.0 0.048 37.62 58.48 0.086 1.78 0.92 0.26 0.80 1.03 1.0 0.039 4.01 83.73 0.135 3.90 2.84 2 1.134393 17.962 1.7197 20.862
20.997 5598.95 13.5 0.268 13.3 25.6 11.09 1.99%Sand-Slime Tailing 0.059 119.0 1.18 0.44 0.74 1 1.13 15.024 208.84 17.66 17 2.18% 2.7 47% 1.76 0.00 1.76 0 0.87 0.05 0.96 1.0 0.048 36.50 54.15 0.082 1.69 0.92 0.24 0.80 1.03 1.0 0.039 4.26 75.26 0.120 3.45 2.57 2 1.128809 15.205 1.4557 17.659
21.161 5598.79 13.5 0.247 13.3 33.1 14.34 1.83%Sand-Slime Tailing 0.059 119.0 1.19 0.45 0.74 1 1.12 14.951 207.82 17.63 17 2.00% 2.7 47% 1.77 0.00 1.77 0 0.87 0.05 0.96 1.0 0.048 36.49 54.12 0.082 1.69 0.92 0.24 0.80 1.03 1.0 0.039 4.11 72.54 0.115 3.32 2.50 2 1.123287 15.183 1.4536 17.634
21.325 5598.62 14.2 0.171 14.0 32.9 14.27 1.20%Sand-Slime Tailing 0.059 119.0 1.20 0.45 0.75 1 1.12 15.661 217.68 18.46 17 1.31% 2.6 47% 1.78 0.00 1.78 0 0.87 0.05 0.96 1.0 0.048 36.77 55.23 0.083 1.72 0.91 0.25 0.80 1.03 1.0 0.039 3.32 61.36 0.101 2.90 2.31 2 1.117826 15.89 1.5214 18.456
21.489 5598.46 21.5 0.169 21.3 27.8 12.05 0.79%Sand-Slime Tailing 0.059 119.0 1.21 0.46 0.75 1 1.11 23.539 327.20 27.56 27 0.83% 2.3 47% 1.79 0.00 1.79 0 0.86 0.06 0.96 1.0 0.048 39.97 67.53 0.097 2.02 0.91 0.30 0.80 1.03 1.0 0.039 2.07 57.16 0.097 2.77 2.39 2 1.106167 23.731 2.272 27.562
21.653 5598.30 19.5 0.201 19.4 19.6 8.49 1.03%Sand-Slime Tailing 0.059 119.0 1.22 0.46 0.76 1 1.10 21.372 297.07 24.98 24 1.10% 2.4 47% 1.80 0.00 1.80 0 0.86 0.06 0.96 1.0 0.048 39.06 64.04 0.092 1.93 0.91 0.29 0.80 1.03 1.0 0.039 2.48 61.83 0.102 2.89 2.41 2 1.103335 21.507 2.059 24.979
21.817 5598.13 15.2 0.196 15.1 19.5 8.45 1.29%Sand-Slime Tailing 0.059 119.0 1.23 0.47 0.76 1 1.10 16.637 231.26 19.48 18 1.40% 2.6 47% 1.81 0.00 1.81 0 0.86 0.05 0.96 1.0 0.048 37.13 56.61 0.084 1.76 0.91 0.25 0.80 1.03 1.0 0.039 3.29 64.11 0.105 2.95 2.35 2 1.101801 16.771 1.6057 19.479
21.981 5597.97 13.5 0.188 13.3 22.6 9.79 1.40%Sand-Slime Tailing 0.059 119.0 1.24 0.47 0.77 1 1.10 14.595 202.88 17.13 16 1.54% 2.7 47% 1.82 0.00 1.82 0 0.86 0.05 0.96 1.0 0.048 36.31 53.44 0.081 1.69 0.91 0.24 0.80 1.02 1.0 0.039 3.77 64.60 0.105 2.95 2.32 2 1.096574 14.75 1.4122 17.131
22.145 5597.80 12.1 0.166 12.0 27.8 12.05 1.37%Sand-Slime Tailing 0.059 119.0 1.25 0.48 0.77 1 1.09 13.053 181.44 15.38 14 1.52% 2.7 47% 1.83 0.00 1.83 0 0.86 0.05 0.96 1.0 0.048 35.70 51.08 0.079 1.64 0.91 0.23 0.80 1.02 1.0 0.039 4.08 62.70 0.103 2.87 2.26 2 1.091404 13.243 1.2679 15.381
22.309 5597.64 9.5 0.208 9.3 33.0 14.31 2.19%Slime Tailings 0.057 113.1 1.26 0.48 0.77 1 1.09 10.097 140.34 11.99 11 2.52% 2.9 71% 1.84 0.00 1.84 0 0.86 0.05 0.96 1.0 0.048 34.26 46.25 0.074 1.55 0.91 0.20 0.80 1.02 1.0 0.039 6.02 72.19 0.115 3.20 2.37 2 1.086815 10.321 0.9881 11.987
22.473 5597.48 10.2 0.214 9.9 57.5 24.93 2.09%Slime Tailings 0.057 113.1 1.27 0.49 0.78 1 1.08 10.671 148.33 12.85 12 2.39% 2.9 71% 1.85 0.00 1.85 0 0.86 0.05 0.96 1.0 0.048 34.56 47.41 0.075 1.57 0.91 0.21 0.80 1.02 1.0 0.039 5.61 72.09 0.115 3.18 2.38 2 1.08227 11.06 1.0589 12.845
22.638 5597.31 12.2 0.168 12.0 43.6 18.90 1.37%Sand-Slime Tailing 0.059 119.0 1.28 0.49 0.78 1 1.08 12.884 179.09 15.30 14 1.53% 2.7 47% 1.86 0.00 1.86 0 0.85 0.05 0.96 1.0 0.048 35.67 50.97 0.078 1.65 0.90 0.23 0.80 1.02 1.0 0.039 4.11 62.96 0.103 2.85 2.25 2 1.077252 13.177 1.2616 15.305
22.802 5597.15 15.7 0.124 15.5 28.3 12.28 0.79%Sand-Slime Tailing 0.059 119.0 1.29 0.50 0.79 1 1.07 16.653 231.47 19.56 18 0.86% 2.5 47% 1.87 0.00 1.87 0 0.85 0.05 0.96 1.0 0.047 37.16 56.72 0.084 1.78 0.90 0.26 0.80 1.02 1.0 0.039 2.72 53.26 0.094 2.58 2.18 2 1.072287 16.842 1.6125 19.561
22.966 5596.98 18.3 0.115 18.2 21.4 9.29 0.63%Sand-Slime Tailing 0.059 119.0 1.29 0.50 0.79 1 1.07 19.355 269.03 22.65 21 0.68% 2.4 47% 1.88 0.00 1.88 0 0.85 0.05 0.96 1.0 0.047 38.24 60.89 0.089 1.88 0.90 0.27 0.80 1.02 1.0 0.039 2.24 50.80 0.092 2.52 2.20 2 1.066378 19.497 1.8667 22.645
23.130 5596.82 17.6 0.122 17.5 22.6 9.77 0.69%Sand-Slime Tailing 0.059 119.0 1.30 0.51 0.80 1 1.06 18.534 257.62 21.70 20 0.75% 2.4 47% 1.89 0.00 1.89 0 0.85 0.05 0.96 1.0 0.047 37.91 59.61 0.087 1.86 0.90 0.27 0.80 1.02 1.0 0.039 2.40 52.09 0.093 2.54 2.20 2 1.062112 18.683 1.7887 21.700
23.294 5596.66 16.7 0.117 16.6 23.3 10.10 0.70%Sand-Slime Tailing 0.059 119.0 1.31 0.51 0.80 1 1.06 17.505 243.32 20.51 19 0.76% 2.4 47% 1.89 0.00 1.89 0 0.85 0.05 0.96 1.0 0.047 37.49 58.00 0.086 1.82 0.90 0.26 0.80 1.01 1.0 0.039 2.52 51.71 0.093 2.52 2.17 2 1.057698 17.659 1.6906 20.510
23.458 5596.49 18.6 0.112 18.5 23.3 10.10 0.60%Sand-Slime Tailing 0.059 119.0 1.32 0.52 0.81 1 1.05 19.432 270.11 22.75 21 0.65% 2.4 47% 1.90 0.00 1.90 0 0.85 0.05 0.96 1.0 0.047 38.28 61.03 0.089 1.90 0.90 0.28 0.80 1.01 1.0 0.039 2.21 50.28 0.092 2.48 2.19 2 1.052111 19.586 1.8751 22.747
23.622 5596.33 24.6 0.061 24.5 18.8 8.15 0.25%Sand-Slime Tailing 0.059 119.0 1.33 0.52 0.81 1 1.04 25.556 355.23 29.82 29 0.26% 2.1 47% 1.91 0.00 1.91 0 0.85 0.06 0.95 1.0 0.047 40.76 70.59 0.100 2.15 0.90 0.32 0.80 1.01 1.0 0.039 1.48 44.02 0.087 2.33 2.24 2 1.044818 25.679 2.4585 29.824
23.786 5596.16 27.8 0.103 27.7 11.3 4.89 0.37%Sand-Slime Tailing 0.059 119.0 1.34 0.53 0.82 1 1.04 28.802 400.34 33.54 32 0.39% 2.1 47% 1.92 0.00 1.92 0 0.85 0.06 0.95 1.0 0.046 42.06 75.60 0.107 2.30 0.89 0.33 0.80 1.01 1.0 0.039 1.49 50.05 0.092 2.45 2.38 2 1.039399 28.875 2.7645 33.537
23.950 5596.00 23.4 0.209 23.4 12.0 5.22 0.89%Sand-Slime Tailing 0.059 119.0 1.35 0.53 0.82 1 1.04 24.226 336.75 28.23 27 0.95% 2.4 47% 1.93 0.00 1.93 0 0.84 0.06 0.95 1.0 0.047 40.20 68.43 0.098 2.10 0.89 0.31 0.80 1.01 1.0 0.039 2.17 61.33 0.101 2.70 2.40 2 1.036644 24.304 2.3269 28.228
Liquef_SeismicSettle_30Aug2015.xls Page 21 of 36
Energy Fuels Resources (USA) Inc.
White Mesa MillLiquefaction Analyses
Data File: 13-52106_SP2E1-BSC-CPT 5613.10 Water surface elevation during CPT investigation (ft a5619.95 Ground Surface Elevation at time of CPT (ft amsl)Location: White Mesa 2013 CPT Investigation 0.15 5611.67 Water surface elevation at t0 (ft amsl)5630.46 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl)
..\..\..\6.2.3 Field Data\2013 Field Investigation\Conetec Dat 5.5 5595.46 Water surface elevation at t1 (ft amsl) 0.50 Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after place ###### 5630.21 5629.96 0.50 0.055 110 0.028 0.014 0.00 0.00 0.028 0.014
Tailings Sands 1.69 5590.46 Water surface elevation at t2 (ft amsl)3.50 Thickness of Water Storage/Rooting Zone (ft) ###### 5628.21 5626.46 3.50 0.054 107 0.215 0.121 0.00 0.00 0.215 0.121
Tailings Sand-Slimes 4.00 Thickness of High Compaction Layer (ft)###### 5624.46 5622.46 4.00 0.060 120 0.454 0.334 0.00 0.00 0.454 0.334
Tailings Slimes 1.44 2.51 Thickness of Random/Platform Fill on on top of existing interim cover (ft) ###### 5621.21 5619.95 2.51 0.050 101 0.580 0.517 0.00 0.00 0.580 0.517
Interim Cover 0.47 1160.95 Additional Stress due to Final Cover Placement, ΔσFC (psf)
Cells Requiring User Input/Manipulation 2.21 2.21 7.51 5590.46 Elevation of bottom of tailings (liner) (ft amsl)
rd Cσ Kσ Ka rd Dr f Kσ Ka Avg CN qc1 qc1 qc1N
(ft) (ft amsl) TSF TSF TSF (ft) PSI (%) (tcf) (pcf) (tsf)(tsf)(tsf) 1=Yes TSF MPa % (tsf)(tsf)(tsf) 1=Yes FoS TSF MPa
0=No 0=No
Scaling Factor for stress ration, rm
Volumetric Strain Ratio for Site-Specific Design Earth
Equiv. Number of Uniform Strain Cycles, N
Youd et al. (2001)
CSR
M=7.5,
s'v=1atm
0.15
Earthquake Moment Magnitude, M: 5.5
Magnitude Scaling Factor, MSF:
Equil Pore
Pressure at time of
Conditions at t1 Liquefaction Triggering Analyses Idriss & Boulanger (2008)Equil
Pore
Pressure
at t1CN qc1 qc1 qc1N
Normalized Cone
Penetration Resistance, Qt
Normalized Friction
Ratio, Fr (%)
Total Stress
at t1 Liquefiable?
1=Yes
2=No
Cyclic Stress RatioEffective
Stress at
t1
Saturated
at t1
Idriss & Boulanger (2008)
Idriss and Boulanger (2008)
Max. Horiz. Acceleration, Amax/g:
Earthquake Moment Magnitude, M:
Magnitude Scaling Factor, MSF:
WHITE MESA TAILINGS REPOSITORY LIQUEFACTION AND SEISMIC SETTLEMENT ANALYSES - 2E1 Elev. at
Top of Layer (ft)
Elev. At
Midpoint of Layer (ft)
Bottom
of Layer (ft)
Thickness of Layer (ft)
CSR
M=7.5,
s'v=1atm
Kc
High Compaction Layer
Platform/Random Fill Layer
Pw (u2)Pw (u2)
2013 CPT Data from ConeTec CPT Data Interpretations
fs/qt
Material Type (as determined
by fines
Unit Weight Unit Weight
Total Stress
at time of CPT
Depth
at time of CPT Elevation qt fs qc
Effective Stress at
time of CPT
Saturated
at time of CPT
Type Index, Ic FC
Youd, et al (2001)
Max. Horiz. Acceleration, Amax/g:
Stress at
Bottom of Layer (tsf)
Stress at
Midpoint of Layer (tsf)FINAL COVER
Erosion Protection Layer
Water Storage/Rooting Zone Layer
qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Equil Pore
Pressure at Midpoint of Layer (tsf)
Unit Weight (tcf)
Unit Weight (pcf)
Stress at
Bottom of Layer (tsf)
Stress at
Midpoint of Layer (tsf)
Pressure
at Bottom of Layer (tsf)
Cyclic Resistance Ratio
FoS
Cyclic Stress Ratio
FoS
∆qc1n qc1n-cs
(CRR)
M=7.5,
s'v=1atm
24.114 5595.84 18.1 0.289 18.0 13.9 6.03 1.60%Sand-Slime Tailing 0.059 119.0 1.36 0.54 0.82 1 1.03 18.635 259.03 21.75 20 1.73% 2.6 47% 1.94 0.00 1.94 0 0.84 0.05 0.96 1.0 0.047 37.93 59.68 0.087 1.88 0.89 0.27 0.80 1.01 1.0 0.039 3.37 73.35 0.117 3.10 2.49 2 1.034131 18.725 1.7927 21.748
24.278 5595.67 18.2 0.238 18.1 15.7 6.80 1.31%Sand-Slime Tailing 0.059 119.0 1.37 0.54 0.83 1 1.03 18.616 258.76 21.74 20 1.42% 2.6 47% 1.95 0.00 1.95 0 0.84 0.05 0.96 1.0 0.046 37.93 59.66 0.087 1.88 0.89 0.27 0.80 1.01 1.0 0.039 3.10 67.33 0.108 2.87 2.37 2 1.029637 18.717 1.7919 21.738
24.442 5595.51 24.4 0.195 24.3 16.8 7.27 0.80%Sand-Slime Tailing 0.059 119.0 1.38 0.55 0.83 1 1.02 24.907 346.21 29.05 28 0.85% 2.3 47% 1.96 0.00 1.96 0 0.84 0.06 0.95 1.0 0.046 40.49 69.54 0.099 2.14 0.89 0.31 0.80 1.01 1.0 0.039 2.05 59.56 0.100 2.62 2.38 2 1.023719 25.014 2.3949 29.053
24.606 5595.34 34.4 0.343 34.3 15.2 6.60 1.00%Sand-Slime Tailing 0.059 119.0 1.39 0.55 0.84 1 1.02 34.889 484.95 40.63 39 1.04% 2.2 47% 1.97 0.00 1.97 1 0.84 0.07 0.95 1.0 0.046 44.55 85.19 0.120 2.61 0.89 0.37 0.80 1.01 1.0 0.039 1.79 72.69 0.116 3.03 2.82 2 1.018055 34.986 3.3495 40.634
24.770 5595.18 20.5 0.393 20.4 14.3 6.19 1.91%Sand-Slime Tailing 0.059 119.0 1.40 0.56 0.84 1 1.02 20.768 288.68 24.23 23 2.05% 2.6 47% 1.98 0.01 1.97 1 0.84 0.06 0.95 1.0 0.046 38.80 63.02 0.091 1.97 0.89 0.28 0.80 1.00 1.0 0.039 3.40 82.30 0.132 3.43 2.70 2 1.016063 20.859 1.997 24.226
24.934 5595.02 16.7 0.314 16.6 16.6 7.19 1.89%Sand-Slime Tailing 0.059 119.0 1.41 0.56 0.85 1 1.01 16.751 232.84 19.58 18 2.06% 2.7 47% 1.99 0.01 1.98 1 0.84 0.05 0.96 1.0 0.047 37.17 56.75 0.084 1.81 0.89 0.26 0.80 1.00 1.0 0.039 3.96 77.45 0.123 3.18 2.50 2 1.012167 16.856 1.6138 19.577
25.098 5594.85 14.6 0.266 14.4 26.3 11.40 1.83%Sand-Slime Tailing 0.059 119.0 1.42 0.57 0.85 1 1.01 14.503 201.59 17.04 15 2.03% 2.7 47% 2.00 0.02 1.98 1 0.83 0.05 0.96 1.0 0.047 36.28 53.31 0.081 1.73 0.88 0.24 0.80 1.00 1.0 0.039 4.34 73.97 0.118 3.02 2.38 2 1.007857 14.669 1.4044 17.037
25.262 5594.69 24.0 0.214 23.8 30.2 13.07 0.89%Sand-Slime Tailing 0.059 119.0 1.43 0.57 0.86 1 1.00 23.851 331.52 27.92 26 0.95% 2.4 47% 2.01 0.02 1.99 1 0.83 0.06 0.95 1.0 0.046 40.09 68.01 0.097 2.09 0.88 0.31 0.80 1.00 1.0 0.039 2.21 61.74 0.102 2.60 2.35 2 1.003389 24.039 2.3015 27.920
25.426 5594.52 24.6 0.322 24.5 24.1 10.42 1.31%Sand-Slime Tailing 0.059 119.0 1.44 0.58 0.86 1 1.00 24.455 339.93 28.58 27 1.39% 2.5 47% 2.02 0.03 1.99 1 0.83 0.06 0.95 1.0 0.046 40.32 68.90 0.098 2.12 0.88 0.31 0.80 1.00 1.0 0.039 2.54 72.71 0.116 2.93 2.52 2 0.9994 24.605 2.3557 28.578
25.590 5594.36 18.9 0.380 18.7 25.6 11.07 2.01%Sand-Slime Tailing 0.059 119.0 1.45 0.58 0.87 1 1.00 18.640 259.10 21.83 20 2.18% 2.7 47% 2.03 0.03 2.00 1 0.83 0.05 0.95 1.0 0.047 37.96 59.79 0.088 1.88 0.88 0.27 0.80 1.00 1.0 0.040 3.77 82.36 0.132 3.32 2.60 2 0.995211 18.799 1.7998 21.834
25.754 5594.20 17.6 0.410 17.4 32.3 14.00 2.33%Sand-Slime Tailing 0.059 119.0 1.46 0.59 0.87 1 0.99 17.234 239.55 20.25 19 2.54% 2.7 47% 2.04 0.04 2.00 1 0.83 0.05 0.96 1.0 0.047 37.40 57.65 0.085 1.83 0.88 0.26 0.80 1.00 1.0 0.040 4.27 86.54 0.140 3.51 2.67 2 0.991028 17.434 1.6691 20.248
25.918 5594.03 15.1 0.388 14.8 47.4 20.55 2.56%Slime Tailings 0.057 113.1 1.47 0.59 0.88 1 0.99 14.652 203.67 17.36 16 2.84% 2.8 71% 2.05 0.04 2.01 1 0.83 0.05 0.96 1.0 0.047 36.13 53.49 0.081 1.73 0.88 0.24 0.80 1.00 1.0 0.040 5.00 86.83 0.141 3.50 2.62 2 0.987343 14.944 1.4308 17.357
26.082 5593.87 12.7 0.338 12.4 51.7 22.40 2.65%Slime Tailings 0.057 113.1 1.48 0.60 0.88 1 0.98 12.217 169.82 14.56 13 3.00% 2.9 71% 2.06 0.05 2.01 1 0.83 0.05 0.96 1.0 0.047 35.16 49.72 0.077 1.65 0.88 0.22 0.80 1.00 1.0 0.040 5.79 84.24 0.136 3.35 2.50 2 0.983689 12.535 1.2001 14.558
26.246 5593.70 17.4 0.296 17.0 74.4 32.24 1.70%Sand-Slime Tailing 0.059 119.0 1.49 0.61 0.88 1 0.98 16.605 230.81 19.81 18 1.86% 2.7 47% 2.07 0.05 2.01 1 0.82 0.05 0.96 1.0 0.047 37.25 57.06 0.085 1.81 0.87 0.26 0.80 0.99 1.0 0.040 3.77 74.76 0.119 2.92 2.37 2 0.97965 17.06 1.6333 19.814
26.410 5593.54 15.8 0.331 15.5 39.8 17.23 2.10%Sand-Slime Tailing 0.059 119.0 1.50 0.61 0.89 1 0.98 15.162 210.75 17.89 16 2.32% 2.8 47% 2.08 0.06 2.02 1 0.82 0.05 0.96 1.0 0.047 36.58 54.47 0.082 1.75 0.87 0.24 0.80 0.99 1.0 0.040 4.48 80.16 0.128 3.13 2.44 2 0.975649 15.404 1.4748 17.891
26.574 5593.38 15.8 0.404 15.3 86.3 37.40 2.55%Slime Tailings 0.057 113.1 1.51 0.62 0.89 1 0.97 14.863 206.60 17.87 16 2.82% 2.8 71% 2.09 0.07 2.02 1 0.82 0.05 0.96 1.0 0.047 36.31 54.18 0.082 1.74 0.87 0.24 0.80 0.99 1.0 0.040 4.91 87.67 0.143 3.47 2.60 2 0.972092 15.387 1.4732 17.871
26.739 5593.21 16.2 0.416 16.0 39.0 16.89 2.56%Slime Tailings 0.057 113.1 1.52 0.62 0.90 1 0.97 15.487 215.27 18.26 16 2.83% 2.8 71% 2.10 0.07 2.03 1 0.82 0.05 0.96 1.0 0.047 36.45 54.71 0.082 1.75 0.87 0.25 0.80 0.99 1.0 0.040 4.84 88.43 0.144 3.49 2.62 2 0.968565 15.723 1.5053 18.261
26.903 5593.05 19.8 0.353 19.4 59.3 25.69 1.78%Sand-Slime Tailing 0.059 119.0 1.53 0.63 0.90 1 0.97 18.751 260.63 22.19 20 1.93% 2.6 47% 2.11 0.08 2.03 1 0.82 0.05 0.95 1.0 0.047 38.08 60.28 0.088 1.88 0.87 0.27 0.80 0.99 1.0 0.040 3.55 78.85 0.126 3.02 2.45 2 0.965029 19.108 1.8294 22.192
27.067 5592.88 25.7 0.481 25.6 31.0 13.43 1.87%Sand-Slime Tailing 0.059 119.0 1.54 0.63 0.91 1 0.96 24.609 342.07 28.80 27 1.99% 2.5 47% 2.12 0.08 2.04 1 0.82 0.06 0.95 1.0 0.047 40.40 69.20 0.099 2.11 0.87 0.31 0.80 0.99 1.0 0.040 3.01 86.67 0.141 3.36 2.73 2 0.963182 24.796 2.3739 28.799
27.231 5592.72 23.6 0.456 23.3 42.6 18.45 1.93%Sand-Slime Tailing 0.059 119.0 1.55 0.64 0.91 1 0.96 22.359 310.79 26.26 24 2.07% 2.6 47% 2.13 0.09 2.04 1 0.82 0.06 0.95 1.0 0.047 39.51 65.78 0.094 2.02 0.87 0.30 0.80 0.99 1.0 0.040 3.27 85.87 0.139 3.30 2.66 2 0.958797 22.614 2.1651 26.265
27.395 5592.56 22.8 0.504 22.4 57.1 24.73 2.21%Sand-Slime Tailing 0.059 119.0 1.56 0.64 0.92 1 0.95 21.416 297.69 25.27 23 2.37% 2.6 47% 2.14 0.09 2.05 1 0.82 0.06 0.95 1.0 0.047 39.16 64.43 0.093 1.98 0.87 0.29 0.80 0.99 1.0 0.040 3.59 90.66 0.149 3.52 2.75 2 0.95481 21.757 2.083 25.269
27.559 5592.39 17.8 0.379 17.4 71.1 30.80 2.13%Sand-Slime Tailing 0.059 119.0 1.57 0.65 0.92 1 0.95 16.510 229.49 19.67 18 2.33% 2.7 47% 2.15 0.10 2.05 1 0.81 0.05 0.95 1.0 0.047 37.20 56.86 0.084 1.80 0.86 0.26 0.80 0.99 1.0 0.040 4.23 83.15 0.133 3.13 2.46 2 0.94942 16.932 1.621 19.665
27.723 5592.23 23.3 0.387 22.9 65.4 28.36 1.66%Sand-Slime Tailing 0.059 119.0 1.58 0.65 0.92 1 0.95 21.674 301.27 25.62 23 1.78% 2.6 47% 2.16 0.10 2.06 1 0.81 0.06 0.95 1.0 0.047 39.29 64.91 0.093 1.99 0.86 0.29 0.80 0.99 1.0 0.040 3.11 79.73 0.127 2.97 2.48 2 0.947722 22.062 2.1122 25.623
27.887 5592.06 19.0 0.387 18.8 36.8 15.95 2.03%Sand-Slime Tailing 0.059 119.0 1.59 0.66 0.93 1 0.94 17.700 246.03 20.81 19 2.22% 2.7 47% 2.17 0.11 2.06 1 0.81 0.05 0.95 1.0 0.047 37.60 58.41 0.086 1.83 0.86 0.26 0.80 0.98 1.0 0.041 3.98 82.85 0.133 3.08 2.46 2 0.942001 17.917 1.7153 20.809
28.051 5591.90 23.9 0.387 23.5 75.0 32.50 1.62%Sand-Slime Tailing 0.059 119.0 1.60 0.66 0.93 1 0.94 22.063 306.68 26.14 24 1.73% 2.6 47% 2.18 0.11 2.06 1 0.81 0.06 0.95 1.0 0.047 39.47 65.61 0.094 2.01 0.86 0.30 0.80 0.98 1.0 0.041 3.04 79.33 0.126 2.92 2.46 2 0.940871 22.504 2.1545 26.137
Liquef_SeismicSettle_30Aug2015.xls Page 22 of 36
Energy Fuels Resources (USA) Inc.
White Mesa MillLiquefaction Analyses
Data File: 13-52106_SP3-1S-BSC-CPT 5608.00 Water surface elevation during CPT investigation (ft 5612.56 Ground Surface Elevation at time of CPT (ft amsl)Location: White Mesa 2013 CPT Investigation 0.15 5604.28 Water surface elevation at t0 (ft amsl)5620.47 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl)
..\..\..\6.2.3 Field Data\2013 Field Investigation\Conetec Dat 5.5 5595.59 Water surface elevation at t1 (ft amsl) 0.50 Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after pla ###### 5620.22 5619.97 0.50 0.055 110 0.028 0.014 0.00 0.00 0.028 0.014
Tailings Sands 1.69 5590.59 Water surface elevation at t2 (ft amsl)3.50 Thickness of Water Storage/Rooting Zone (ft) ###### 5618.22 5616.47 3.50 0.054 107 0.215 0.121 0.00 0.00 0.215 0.121
Tailings Sand-Slimes 3.50 Thickness of High Compaction Layer (ft)###### 5614.72 5612.97 3.50 0.060 120 0.424 0.320 0.00 0.00 0.424 0.320
Tailings Slimes 1.44 0.41 Thickness of Random/Platform Fill on on top of existing interim cover (ft) ###### 5612.77 5612.56 0.41 0.050 101 0.445 0.434 0.00 0.00 0.445 0.434
Interim Cover 0.47 887.10 Additional Stress due to Final Cover Placement, ΔσFC (psf)
Cells Requiring User Input/Manipulation 2.21 2.21 7.51 5590.59 Elevation of bottom of tailings (liner) (ft amsl)
rd Cσ Kσ Ka rd Dr f Kσ Ka Avg CN qc1 qc1 qc1N
(ft) (ft amsl) TSF TSF TSF (ft) PSI (%) (tcf) (pcf) (tsf)(tsf)(tsf) 1=Yes TSF MPa % (tsf)(tsf)(tsf) 1=Yes FoS TSF MPa
0=No 0=No
0.164 5612.40 1.0 0.010 1.0 -0.2 -0.10 1.00%Interim Cover 0.050 100.7 0.01 0.00 0.01 0 1.70 1.700 23.63 1.97 120 1.01% 1.9 51% 0.45 0.00 0.45 0 1.00 0.04 1.02 1.0 0.059 31.01 32.98 0.063 1.07 0.98 0.08 0.80 2.53 1.0 0.017 1.15 2.26 0.052 125.00 63.03 2 1.7 1.6975 0.1625 1.971
0.328 5612.23 1.0 0.010 1.0 0.4 0.19 1.00%Interim Cover 0.050 100.7 0.02 0.00 0.02 0 1.70 1.700 23.63 1.98 60 1.01% 2.1 51% 0.46 0.00 0.46 0 1.00 0.04 1.02 1.0 0.059 31.02 32.99 0.063 1.07 0.98 0.08 0.80 2.20 1.0 0.020 1.44 2.85 0.052 63.11 32.09 2 1.7 1.7046 0.1632 1.980
0.492 5612.07 1.0 0.010 1.0 -0.1 -0.04 1.00%Interim Cover 0.050 100.7 0.02 0.00 0.02 0 1.70 1.700 23.63 1.97 39 1.03% 2.2 51% 0.47 0.00 0.47 0 1.00 0.04 1.02 1.0 0.059 31.01 32.99 0.063 1.07 0.98 0.08 0.80 2.03 1.0 0.021 1.78 3.51 0.053 42.54 21.80 2 1.7 1.6989 0.1627 1.973
0.656 5611.90 1.0 0.010 1.0 -0.2 -0.08 1.00%Interim Cover 0.050 100.7 0.03 0.00 0.03 0 1.70 1.700 23.63 1.97 29 1.04% 2.4 51% 0.48 0.00 0.48 0 1.00 0.04 1.02 1.0 0.059 31.01 32.98 0.063 1.07 0.98 0.08 0.80 1.92 1.0 0.023 2.14 4.21 0.054 32.26 16.67 2 1.7 1.6981 0.1626 1.972
0.820 5611.74 5.6 0.026 5.6 14.4 6.23 0.46%Interim Cover 0.050 100.7 0.04 0.00 0.04 0 1.70 9.435 131.15 11.14 136 0.46% 1.6 51% 0.48 0.00 0.48 0 1.00 0.05 1.03 1.0 0.059 34.23 45.36 0.073 1.23 0.98 0.19 0.80 1.84 1.0 0.024 1.00 11.14 0.059 28.61 14.92 2 1.7 9.5875 0.9179 11.135
0.984 5611.58 9.5 0.093 9.4 16.6 7.20 0.98%Interim Cover 0.050 100.7 0.05 0.00 0.05 0 1.70 15.929 221.41 18.71 190 0.99% 1.7 51% 0.49 0.00 0.49 0 1.00 0.05 1.03 1.0 0.059 36.88 55.59 0.083 1.40 0.98 0.25 0.80 1.77 1.0 0.024 1.04 19.42 0.066 26.63 14.01 2 1.7 16.105 1.5419 18.705
1.148 5611.41 19.7 0.245 19.6 13.4 5.80 1.24%Interim Cover 0.050 100.7 0.06 0.00 0.06 0 1.70 33.371 463.86 38.92 340 1.25% 1.6 51% 0.50 0.00 0.50 0 1.00 0.06 1.03 1.0 0.060 43.98 82.90 0.117 1.95 0.98 0.36 0.80 1.72 1.0 0.025 1.00 38.92 0.082 28.43 15.19 2 1.7 33.513 3.2085 38.923
1.312 5611.25 35.4 0.510 35.4 11.0 4.76 1.44%Interim Cover 0.050 100.7 0.07 0.00 0.07 0 1.70 60.146 836.03 69.99 535 1.44% 1.6 51% 0.51 0.00 0.51 0 1.00 0.08 1.04 1.0 0.060 54.88 124.87 0.190 3.16 0.98 0.48 0.76 1.86 1.0 0.023 1.00 69.99 0.112 33.79 18.47 2 1.7 60.263 5.7695 69.991
1.476 5611.08 80.0 0.912 79.9 17.9 7.76 1.14%Interim Cover 0.050 100.7 0.07 0.00 0.07 0 1.70 135.830 1888.04 157.98 1075 1.14% 1.4 51% 0.52 0.00 0.52 0 1.00 0.17 1.09 1.0 0.063 85.76 243.74 1.000 15.91 0.98 0.73 0.64 2.43 1.0 0.018 1.00 157.98 0.447 119.94 67.93 2 1.7 136.02 13.023 157.979
1.640 5610.92 89.0 1.063 88.9 17.5 7.59 1.19%Interim Cover 0.050 100.7 0.08 0.00 0.08 0 1.70 151.130 2100.71 175.74 1076 1.20% 1.4 51% 0.53 0.00 0.53 0 1.00 0.20 1.10 1.0 0.064 91.99 267.74 1.000 15.73 0.98 0.77 0.62 2.45 1.0 0.018 1.00 175.74 1.000 241.77 128.75 2 1.7 151.32 14.487 175.744
1.804 5610.76 96.1 1.232 96.1 7.4 3.19 1.28%Interim Cover 0.050 100.7 0.09 0.00 0.09 0 1.70 163.370 2270.84 189.84 1057 1.28% 1.4 51% 0.53 0.00 0.53 0 1.00 0.23 1.10 1.0 0.064 96.94 286.77 1.000 15.73 0.98 0.80 0.60 2.45 1.0 0.018 1.00 189.84 1.000 219.87 117.80 2 1.7 163.45 15.649 189.835
1.968 5610.59 77.7 1.349 77.7 5.5 2.40 1.74%Interim Cover 0.050 100.7 0.10 0.00 0.10 0 1.70 132.073 1835.81 153.46 783 1.74% 1.6 51% 0.54 0.00 0.54 0 1.00 0.16 1.08 1.0 0.062 84.18 237.64 1.000 16.09 0.98 0.72 0.64 2.17 1.0 0.020 1.00 153.46 0.416 83.90 50.00 2 1.7 132.13 12.65 153.463
2.133 5610.43 53.3 1.640 53.3 9.6 4.14 3.07%Interim Cover 0.050 100.7 0.11 0.00 0.11 0 1.70 90.576 1259.01 105.32 496 3.08% 1.9 51% 0.55 0.00 0.55 0 1.00 0.11 1.05 1.0 0.061 67.28 172.60 0.435 7.18 0.98 0.59 0.70 1.85 1.0 0.023 1.17 122.92 0.253 47.06 27.12 2 1.7 90.677 8.6815 105.316
2.297 5610.26 46.3 1.974 46.2 9.6 4.14 4.27%Interim Cover 0.050 100.7 0.12 0.00 0.12 0 1.70 78.557 1091.94 91.36 399 4.28% 2.0 51% 0.56 0.00 0.56 0 1.00 0.10 1.04 1.0 0.060 62.38 153.74 0.290 4.81 0.98 0.55 0.72 1.74 1.0 0.025 1.36 124.55 0.260 44.92 24.86 2 1.7 78.658 7.5308 91.357
2.461 5610.10 39.8 1.642 39.7 8.0 3.48 4.13%Interim Cover 0.050 100.7 0.12 0.00 0.12 0 1.70 67.507 938.35 78.50 320 4.14% 2.1 51% 0.57 0.00 0.57 0 1.00 0.09 1.04 1.0 0.060 57.87 136.37 0.221 3.70 0.98 0.51 0.74 1.64 1.0 0.026 1.41 110.83 0.207 33.36 18.53 2 1.7 67.592 6.4713 78.504
2.625 5609.94 45.3 1.613 45.3 4.3 1.87 3.56%Interim Cover 0.050 100.7 0.13 0.00 0.13 0 1.70 76.959 1069.73 89.44 342 3.57% 2.0 51% 0.58 0.00 0.58 0 1.00 0.10 1.04 1.0 0.060 61.71 151.14 0.277 4.62 0.98 0.55 0.73 1.67 1.0 0.026 1.31 116.85 0.228 34.59 19.61 2 1.7 77.005 7.3724 89.436
2.789 5609.77 38.8 1.441 38.8 0.7 0.30 3.72%Interim Cover 0.050 100.7 0.14 0.00 0.14 0 1.70 65.892 915.90 76.54 275 3.73% 2.1 51% 0.58 0.00 0.58 0 0.99 0.09 1.03 1.0 0.059 57.18 133.72 0.213 3.58 0.98 0.51 0.75 1.58 1.0 0.027 1.40 107.01 0.194 27.66 15.62 2 1.7 65.899 6.3092 76.538
2.953 5609.61 36.0 1.125 36.0 0.5 0.22 3.13%Interim Cover 0.050 100.7 0.15 0.00 0.15 0 1.70 61.149 849.97 71.03 241 3.14% 2.0 51% 0.59 0.00 0.59 0 0.99 0.08 1.03 1.0 0.059 55.25 126.27 0.194 3.27 0.97 0.49 0.76 1.53 1.0 0.028 1.35 95.55 0.161 21.71 12.49 2 1.7 61.154 5.8549 71.027
3.117 5609.44 31.9 1.113 31.9 -1.8 -0.76 3.49%Interim Cover 0.050 100.7 0.16 0.00 0.16 0 1.70 54.213 753.56 62.94 202 3.51% 2.1 51% 0.60 0.00 0.60 0 0.99 0.08 1.03 1.0 0.059 52.41 115.35 0.170 2.88 0.97 0.46 0.77 1.48 1.0 0.029 1.48 93.27 0.155 19.85 11.37 2 1.7 54.194 5.1886 62.944
3.281 5609.28 30.2 1.010 30.2 -1.8 -0.77 3.35%Slime Tailings 0.041 82.7 0.16 0.00 0.16 0 1.70 51.306 713.15 59.57 183 3.37% 2.1 71% 0.61 0.00 0.61 0 0.99 0.08 1.03 1.0 0.059 50.83 110.40 0.161 2.73 0.97 0.45 0.78 1.45 1.0 0.030 1.50 89.29 0.146 17.90 10.31 2 1.7 51.287 4.9102 59.567
3.445 5609.12 27.8 0.976 27.8 -1.7 -0.73 3.52%Slime Tailings 0.041 82.7 0.17 0.00 0.17 0 1.70 47.209 656.21 54.81 162 3.54% 2.2 71% 0.61 0.00 0.61 0 0.99 0.07 1.03 1.0 0.059 49.17 103.98 0.149 2.54 0.97 0.43 0.79 1.41 1.0 0.030 1.60 87.77 0.143 16.81 9.67 2 1.7 47.191 4.5181 54.810
3.609 5608.95 23.2 0.881 23.2 -1.0 -0.45 3.80%Slime Tailings 0.041 82.7 0.18 0.00 0.18 0 1.70 39.406 547.74 45.75 130 3.83% 2.3 71% 0.62 0.00 0.62 0 0.99 0.07 1.02 1.0 0.059 46.02 91.78 0.130 2.21 0.97 0.39 0.80 1.37 1.0 0.031 1.82 83.18 0.134 15.11 8.66 2 1.7 39.395 3.7717 45.755
3.773 5608.79 18.8 1.037 18.8 -0.3 -0.12 5.50%Slime Tailings 0.041 82.7 0.18 0.00 0.18 0 1.70 32.028 445.19 37.20 101 5.56% 2.5 71% 0.63 0.00 0.63 0 0.99 0.06 1.02 1.0 0.058 43.04 80.24 0.113 1.94 0.97 0.35 0.80 1.36 1.0 0.032 2.53 94.13 0.158 17.18 9.56 2 1.7 32.025 3.0661 37.195
3.937 5608.62 11.7 1.018 11.7 -0.3 -0.13 8.69%Slime Tailings 0.041 82.7 0.19 0.00 0.19 0 1.70 19.907 276.71 23.12 60 8.84% 2.7 71% 0.63 0.00 0.63 0 0.99 0.05 1.02 1.0 0.058 38.14 61.26 0.089 1.54 0.97 0.28 0.80 1.35 1.0 0.032 4.35 100.63 0.175 18.39 9.96 2 1.7 19.904 1.9056 23.117
4.101 5608.46 25.7 1.084 25.7 0.5 0.20 4.22%Slime Tailings 0.041 82.7 0.20 0.00 0.20 0 1.70 43.622 606.35 50.67 129 4.26% 2.3 71% 0.64 0.00 0.64 0 0.99 0.07 1.02 1.0 0.058 47.73 98.40 0.140 2.40 0.97 0.41 0.79 1.35 1.0 0.032 1.93 97.99 0.168 17.03 9.71 2 1.7 43.627 4.1768 50.670
4.265 5608.29 24.3 1.143 24.3 0.5 0.20 4.70%Slime Tailings 0.041 82.7 0.20 0.00 0.20 0 1.70 41.361 574.92 48.04 118 4.74% 2.4 71% 0.65 0.00 0.65 0 0.99 0.07 1.02 1.0 0.058 46.82 94.86 0.134 2.31 0.97 0.40 0.80 1.33 1.0 0.032 2.14 102.77 0.181 17.79 10.05 2 1.7 41.366 3.9604 48.044
4.429 5608.13 21.7 1.211 21.7 -1.0 -0.45 5.58%Slime Tailings 0.041 82.7 0.21 0.00 0.21 0 1.70 36.907 513.01 42.85 102 5.63% 2.5 71% 0.65 0.00 0.65 0 0.99 0.07 1.02 1.0 0.058 45.01 87.86 0.124 2.13 0.97 0.38 0.80 1.32 1.0 0.032 2.55 109.16 0.201 19.13 10.63 2 1.7 36.896 3.5324 42.852
4.593 5607.97 36.9 1.373 36.9 -0.2 -0.10 3.72%Slime Tailings 0.057 113.1 0.22 0.00 0.22 1 1.70 62.696 871.47 72.81 167 3.75% 2.2 71% 0.66 0.00 0.66 0 0.98 0.09 1.02 1.0 0.058 55.44 128.26 0.199 3.41 0.97 0.49 0.75 1.40 1.0 0.031 1.63 118.67 0.235 21.58 12.49 2 1.7 62.693 6.0023 72.815
4.757 5607.80 75.7 1.484 75.7 0.5 0.20 1.96%Sand-Slime Tailing 0.059 119.0 0.23 0.01 0.22 1 1.70 128.690 1788.79 149.47 337 1.97% 1.8 47% 0.67 0.00 0.67 0 0.98 0.16 1.04 1.0 0.059 82.72 232.19 1.000 16.92 0.97 0.71 0.65 1.61 1.0 0.027 1.09 163.61 1.000 89.79 53.36 2 1.7 128.69 12.321 149.471
4.921 5607.64 90.7 1.093 90.7 1.8 0.79 1.21%Sand Tailings 0.062 123.5 0.24 0.01 0.23 1 1.63 147.850 2055.11 171.74 395 1.21% 1.6 18% 0.68 0.00 0.68 0 0.98 0.20 1.04 1.0 0.059 65.99 237.73 1.000 16.84 0.97 0.76 0.62 1.65 1.0 0.026 1.00 171.74 1.000 87.86 52.35 2 1.630457 147.87 14.157 171.740
5.085 5607.47 113.7 1.047 113.6 8.3 3.60 0.92%Sand Tailings 0.062 123.5 0.25 0.02 0.23 1 1.53 173.889 2417.06 202.05 484 0.92% 1.4 18% 0.69 0.00 0.69 0 0.98 0.27 1.06 1.0 0.060 73.74 275.80 1.000 16.65 0.97 0.82 0.60 1.68 1.0 0.025 1.00 202.05 1.000 86.02 51.33 2 1.530444 173.97 16.656 202.054
5.249 5607.31 123.4 0.699 123.3 4.9 2.11 0.57%Sand Tailings 0.062 123.5 0.26 0.02 0.24 1 1.49 183.875 2555.86 213.61 515 0.57% 1.2 18% 0.70 0.00 0.70 0 0.98 0.30 1.06 1.0 0.060 76.70 290.31 1.000 16.63 0.97 0.84 0.60 1.67 1.0 0.026 1.00 213.61 1.000 84.25 50.44 2 1.491041 183.92 17.609 213.613
5.413 5607.15 101.2 0.707 101.2 3.6 1.54 0.70%Sand Tailings 0.062 123.5 0.27 0.03 0.24 1 1.56 157.808 2193.53 183.32 414 0.70% 1.4 18% 0.71 0.00 0.71 0 0.98 0.22 1.04 1.0 0.059 68.96 252.28 1.000 16.96 0.97 0.78 0.61 1.64 1.0 0.026 1.00 183.32 1.000 82.55 49.75 2 1.55921 157.84 15.112 183.324
5.577 5606.98 80.8 0.675 80.8 2.2 0.94 0.84%Sand Tailings 0.062 123.5 0.28 0.03 0.25 1 1.64 132.252 1838.30 153.63 323 0.84% 1.5 18% 0.72 0.00 0.72 0 0.98 0.17 1.03 1.0 0.058 61.36 214.99 1.000 17.18 0.97 0.72 0.64 1.56 1.0 0.027 1.00 153.63 0.417 33.76 25.47 2 1.636779 132.27 12.664 153.628
5.741 5606.82 76.8 0.595 76.8 2.1 0.89 0.77%Sand Tailings 0.062 123.5 0.29 0.04 0.25 1 1.65 126.407 1757.06 146.84 301 0.78% 1.5 18% 0.73 0.00 0.73 0 0.98 0.16 1.02 1.0 0.058 59.63 206.47 1.000 17.26 0.97 0.70 0.65 1.53 1.0 0.028 1.00 146.84 0.374 29.72 23.49 2 1.646141 126.43 12.104 146.839
5.905 5606.65 74.6 0.547 74.6 2.0 0.86 0.73%Sand Tailings 0.062 123.5 0.30 0.04 0.26 1 1.65 122.801 1706.93 142.65 287 0.74% 1.5 18% 0.74 0.00 0.74 0 0.98 0.15 1.02 1.0 0.058 58.56 201.21 1.000 17.32 0.97 0.69 0.66 1.51 1.0 0.028 1.00 142.65 0.350 27.25 22.29 2 1.647003 122.82 11.759 142.649
6.069 5606.49 70.2 0.520 70.2 1.3 0.57 0.74%Sand Tailings 0.062 123.5 0.31 0.05 0.26 1 1.66 116.482 1619.10 135.30 265 0.74% 1.5 18% 0.75 0.00 0.75 0 0.98 0.14 1.02 1.0 0.057 56.68 191.98 0.810 14.09 0.97 0.67 0.66 1.49 1.0 0.029 1.00 135.30 0.310 23.72 18.90 2 1.65882 116.5 11.153 135.303
6.234 5606.33 60.0 0.488 60.0 1.2 0.52 0.81%Sand Tailings 0.062 123.5 0.32 0.05 0.27 1 1.70 101.915 1416.62 118.38 222 0.82% 1.6 18% 0.76 0.00 0.76 0 0.98 0.12 1.01 1.0 0.057 52.35 170.74 0.415 7.26 0.97 0.63 0.69 1.44 1.0 0.030 1.00 118.38 0.234 17.58 12.42 2 1.7 101.93 9.7586 118.383
6.398 5606.16 59.3 0.442 59.3 0.8 0.36 0.75%Sand Tailings 0.062 123.5 0.33 0.06 0.27 1 1.70 100.623 1398.66 116.88 215 0.75% 1.6 18% 0.78 0.00 0.78 0 0.97 0.12 1.01 1.0 0.057 51.97 168.85 0.396 6.95 0.97 0.62 0.69 1.43 1.0 0.030 1.00 116.88 0.228 16.83 11.89 2 1.698285 100.63 9.6345 116.878
6.562 5606.00 58.2 0.392 58.2 1.2 0.52 0.67%Sand Tailings 0.062 123.5 0.34 0.06 0.28 1 1.69 98.587 1370.35 114.52 207 0.68% 1.6 18% 0.79 0.00 0.79 0 0.97 0.12 1.01 1.0 0.057 51.37 165.88 0.370 6.50 0.97 0.62 0.69 1.42 1.0 0.030 1.00 114.52 0.220 15.90 11.20 2 1.693055 98.599 9.4399 114.517
6.726 5605.83 53.1 0.371 53.1 1.1 0.46 0.70%Sand Tailings 0.062 123.5 0.35 0.07 0.28 1 1.70 90.304 1255.23 104.90 186 0.70% 1.6 18% 0.80 0.00 0.80 0 0.97 0.11 1.01 1.0 0.057 48.91 153.80 0.290 5.11 0.97 0.59 0.70 1.39 1.0 0.031 1.00 104.90 0.187 13.33 9.22 2 1.7 90.315 8.6468 104.896
6.890 5605.67 49.1 0.311 49.1 0.6 0.26 0.63%Sand Tailings 0.062 123.5 0.36 0.07 0.29 1 1.70 83.470 1160.23 96.95 169 0.64% 1.6 18% 0.81 0.00 0.81 0 0.97 0.10 1.01 1.0 0.057 46.88 143.83 0.246 4.35 0.97 0.57 0.72 1.36 1.0 0.031 1.00 96.95 0.165 11.52 7.94 2 1.7 83.476 7.992 96.953
7.054 5605.51 56.4 0.288 56.4 1.2 0.51 0.51%Sand Tailings 0.062 123.5 0.37 0.08 0.29 1 1.67 94.245 1310.00 109.47 191 0.51% 1.5 18% 0.82 0.00 0.82 0 0.97 0.11 1.01 1.0 0.056 50.08 159.55 0.323 5.73 0.97 0.60 0.70 1.38 1.0 0.031 1.00 109.47 0.202 13.89 9.81 2 1.670412 94.257 9.0242 109.474
7.218 5605.34 56.4 0.275 56.4 1.4 0.59 0.49%Sand Tailings 0.062 123.5 0.38 0.08 0.30 1 1.66 93.553 1300.38 108.67 187 0.49% 1.5 18% 0.83 0.00 0.83 0 0.97 0.11 1.00 1.0 0.056 49.87 158.54 0.317 5.63 0.96 0.60 0.70 1.37 1.0 0.031 1.00 108.67 0.199 13.49 9.56 2 1.659913 93.567 8.9581 108.672
7.382 5605.18 44.0 0.351 44.0 0.2 0.09 0.80%Sand Tailings 0.062 123.5 0.39 0.09 0.30 1 1.70 74.766 1039.25 86.84 143 0.81% 1.7 18% 0.84 0.00 0.84 0 0.97 0.10 1.00 1.0 0.056 44.29 131.13 0.206 3.67 0.96 0.54 0.73 1.32 1.0 0.032 1.06 91.90 0.152 10.13 6.90 2 1.7 74.768 7.1583 86.839
7.546 5605.01 36.9 0.372 36.9 -0.1 -0.05 1.01%Sand-Slime Tailing 0.059 119.0 0.40 0.09 0.31 1 1.70 62.747 872.18 72.88 118 1.02% 1.9 47% 0.85 0.00 0.85 0 0.97 0.09 1.00 1.0 0.056 55.86 128.74 0.200 3.57 0.96 0.49 0.75 1.29 1.0 0.033 1.15 84.08 0.135 8.87 6.22 2 1.7 62.746 6.0073 72.875
7.710 5604.85 30.0 0.299 30.0 0.2 0.08 1.00%Sand-Slime Tailing 0.059 119.0 0.41 0.10 0.31 1 1.70 51.034 709.37 59.28 94 1.01% 1.9 47% 0.86 0.00 0.86 0 0.97 0.08 1.00 1.0 0.056 51.09 110.37 0.161 2.87 0.96 0.44 0.78 1.25 1.0 0.034 1.22 72.36 0.115 7.45 5.16 2 1.7 51.036 4.8862 59.275
7.874 5604.69 32.9 0.212 32.9 1.1 0.46 0.64%Sand-Slime Tailing 0.059 119.0 0.42 0.10 0.32 1 1.70 55.896 776.95 64.93 102 0.65% 1.8 47% 0.87 0.00 0.87 0 0.96 0.08 1.00 1.0 0.056 53.07 118.01 0.175 3.15 0.96 0.47 0.77 1.26 1.0 0.034 1.10 71.42 0.114 7.26 5.20 2 1.7 55.907 5.3526 64.933
8.038 5604.52 38.9 0.166 38.9 2.2 0.94 0.43%Sand Tailings 0.062 123.5 0.43 0.11 0.32 1 1.70 66.079 918.50 76.77 119 0.43% 1.6 18% 0.88 0.00 0.88 0 0.96 0.09 1.00 1.0 0.056 41.72 118.49 0.176 3.17 0.96 0.51 0.75 1.28 1.0 0.033 1.00 76.77 0.122 7.66 5.42 2 1.7 66.102 6.3286 76.773
8.202 5604.36 38.5 0.158 38.5 1.2 0.52 0.41%Sand Tailings 0.062 123.5 0.44 0.11 0.33 1 1.70 65.399 909.05 75.97 116 0.42% 1.6 18% 0.89 0.00 0.89 0 0.96 0.09 1.00 1.0 0.056 41.51 117.48 0.174 3.14 0.96 0.50 0.75 1.27 1.0 0.033 1.00 75.97 0.121 7.47 5.30 2 1.7 65.412 6.2625 75.972
8.366 5604.19 36.9 0.159 36.9 0.5 0.22 0.43%Sand Tailings 0.062 123.5 0.45 0.12 0.33 1 1.70 62.798 872.89 72.94 110 0.44% 1.7 18% 0.90 0.00 0.90 0 0.96 0.09 1.00 1.0 0.055 40.74 113.68 0.167 3.01 0.96 0.49 0.75 1.26 1.0 0.034 1.02 74.14 0.118 7.18 5.10 2 1.7 62.803 6.0128 72.942
8.530 5604.03 31.2 0.156 31.2 -0.5 -0.20 0.50%Sand-Slime Tailing 0.059 119.0 0.46 0.12 0.34 1 1.70 53.040 737.26 61.60 91 0.51% 1.8 47% 0.91 0.00 0.91 0 0.96 0.08 1.00 1.0 0.055 51.90 113.50 0.166 3.01 0.96 0.45 0.77 1.24 1.0 0.034 1.09 66.94 0.108 6.49 4.75 2 1.7 53.035 5.0776 61.597
8.694 5603.87 24.0 0.142 24.0 -0.0 -0.02 0.59%Sand-Slime Tailing 0.059 119.0 0.47 0.13 0.34 1 1.70 40.800 567.12 47.39 69 0.60% 1.9 47% 0.92 0.00 0.92 0 0.96 0.07 1.00 1.0 0.055 46.92 94.31 0.133 2.42 0.96 0.40 0.80 1.20 1.0 0.035 1.20 57.03 0.097 5.77 4.09 2 1.7 40.8 3.9062 47.386
8.858 5603.70 20.0 0.119 20.0 3.7 1.59 0.60%Sand-Slime Tailing 0.059 119.0 0.48 0.13 0.35 1 1.70 33.949 471.89 39.48 56 0.61% 2.0 47% 0.92 0.00 0.92 0 0.96 0.06 1.00 1.0 0.055 44.15 83.62 0.118 2.13 0.96 0.36 0.80 1.20 1.0 0.035 1.29 50.93 0.092 5.40 3.77 2 1.7 33.988 3.254 39.475
9.022 5603.54 23.7 0.086 23.7 6.8 2.94 0.36%Sand-Slime Tailing 0.059 119.0 0.49 0.14 0.35 1 1.70 40.273 559.79 46.86 66 0.37% 1.8 47% 0.93 0.00 0.93 0 0.96 0.07 0.99 1.0 0.055 46.74 93.59 0.132 2.40 0.96 0.40 0.80 1.20 1.0 0.035 1.13 52.86 0.094 5.42 3.91 2 1.7 40.345 3.8626 46.858
9.186 5603.37 27.5 0.145 27.5 5.4 2.34 0.53%Sand-Slime Tailing 0.059 119.0 0.50 0.14 0.36 1 1.70 46.665 648.64 54.27 76 0.54% 1.9 47% 0.94 0.00 0.94 0 0.96 0.07 0.99 1.0 0.055 49.33 103.60 0.149 2.70 0.96 0.43 0.79 1.21 1.0 0.035 1.15 62.27 0.102 5.85 4.28 2 1.7 46.722 4.4732 54.265
9.350 5603.21 37.0 0.177 37.0 6.8 2.95 0.48%Sand Tailings 0.062 123.5 0.51 0.15 0.36 1 1.64 60.777 844.79 70.67 101 0.48% 1.7 18% 0.95 0.00 0.95 0 0.96 0.08 0.99 1.0 0.055 40.16 110.82 0.161 2.95 0.96 0.49 0.76 1.23 1.0 0.034 1.05 74.41 0.118 6.66 4.80 2 1.642609 60.846 5.8254 70.669
9.514 5603.05 43.3 0.205 43.3 8.3 3.61 0.47%Sand Tailings 0.062 123.5 0.52 0.15 0.37 1 1.59 68.941 958.28 80.17 117 0.48% 1.7 18% 0.96 0.00 0.96 0 0.95 0.09 0.99 1.0 0.055 42.58 122.75 0.186 3.40 0.96 0.52 0.74 1.25 1.0 0.034 1.02 81.39 0.130 7.23 5.31 2 1.594014 69.024 6.6083 80.167
9.678 5602.88 41.4 0.300 41.3 6.0 2.61 0.73%Sand Tailings 0.062 123.5 0.53 0.16 0.37 1 1.59 65.913 916.19 76.62 110 0.73% 1.8 18% 0.97 0.00 0.97 0 0.95 0.09 0.99 1.0 0.054 41.68 118.30 0.176 3.23 0.96 0.51 0.75 1.24 1.0 0.034 1.10 84.50 0.136 7.46 5.35 2 1.594798 65.973 6.3163 76.624
9.842 5602.72 27.8 0.053 27.7 6.0 2.62 0.19%Sand-Slime Tailing 0.059 119.0 0.54 0.16 0.38 1 1.68 46.511 646.50 54.09 72 0.19% 1.7 47% 0.98 0.00 0.98 0 0.95 0.07 0.99 1.0 0.054 49.27 103.37 0.148 2.72 0.96 0.42 0.79 1.19 1.0 0.035 1.03 55.73 0.096 5.21 3.96 2 1.676664 46.574 4.459 54.093
10.006 5602.55 18.0 0.353 17.9 7.9 3.43 1.96%Sand-Slime Tailing 0.059 119.0 0.55 0.17 0.38 1 1.70 30.464 423.45 35.48 46 2.03% 2.4 47% 0.99 0.00 0.99 0 0.95 0.06 0.99 1.0 0.054 42.74 78.22 0.110 2.02 0.96 0.34 0.80 1.18 1.0 0.036 2.18 77.52 0.123 6.60 4.31 2 1.7 30.548 2.9247 35.480
10.170 5602.39 8.2 0.125 8.2 7.0 3.02 1.52%Slime Tailings 0.057 113.1 0.56 0.18 0.38 1 1.70 13.889 193.06 16.22 20 1.63% 2.6 71% 1.00 0.00 1.00 0 0.95 0.05 0.99 1.0 0.054 35.74 51.95 0.079 1.46 0.96 0.23 0.80 1.17 1.0 0.036 3.34 54.12 0.095 5.02 3.24 2 1.7 13.963 1.3368 16.217
10.335 5602.23 13.5 0.090 13.4 11.9 5.17 0.67%Sand-Slime Tailing 0.059 119.0 0.57 0.18 0.39 1 1.70 22.763 316.41 26.58 33 0.70% 2.2 47% 1.01 0.00 1.01 0 0.95 0.06 0.99 1.0 0.054 39.63 66.21 0.095 1.75 0.96 0.30 0.80 1.17 1.0 0.036 1.72 45.75 0.088 4.61 3.18 2 1.7 22.89 2.1915 26.585
10.499 5602.06 10.5 0.118 10.3 21.6 9.36 1.13%Sand-Slime Tailing 0.059 119.0 0.58 0.19 0.39 1 1.70 17.561 244.10 20.66 25 1.19% 2.4 47% 1.02 0.00 1.02 0 0.95 0.05 0.99 1.0 0.054 37.55 58.21 0.086 1.58 0.96 0.26 0.80 1.17 1.0 0.036 2.50 51.61 0.093 4.80 3.19 2 1.7 17.79 1.7032 20.662
10.663 5601.90 9.7 0.087 9.5 38.5 16.68 0.89%Sand-Slime Tailing 0.059 119.0 0.59 0.19 0.40 1 1.70 16.150 224.49 19.23 23 0.95% 2.4 47% 1.03 0.00 1.03 0 0.95 0.05 0.99 1.0 0.054 37.05 56.28 0.084 1.55 0.96 0.25 0.80 1.17 1.0 0.036 2.42 46.55 0.089 4.54 3.05 2 1.7 16.559 1.5853 19.232
10.827 5601.73 10.0 0.117 9.7 46.7 20.25 1.17%Sand-Slime Tailing 0.059 119.0 0.60 0.20 0.40 1 1.70 16.490 229.21 19.73 23 1.25% 2.5 47% 1.04 0.00 1.04 0 0.95 0.05 0.99 1.0 0.054 37.22 56.95 0.085 1.56 0.96 0.26 0.80 1.16 1.0 0.036 2.67 52.71 0.094 4.74 3.15 2 1.7 16.986 1.6262 19.728
10.991 5601.57 10.2 0.059 9.9 46.8 20.28 0.58%Sand-Slime Tailing 0.059 119.0 0.61 0.20 0.41 1 1.70 16.898 234.88 20.20 24 0.61% 2.3 47% 1.05 0.00 1.05 0 0.94 0.05 0.99 1.0 0.054 37.39 57.59 0.085 1.58 0.96 0.26 0.80 1.16 1.0 0.036 2.04 41.17 0.084 4.22 2.90 2 1.7 17.395 1.6654 20.203
11.155 5601.41 16.6 0.090 16.3 43.7 18.93 0.54%Sand-Slime Tailing 0.059 119.0 0.62 0.21 0.41 1 1.69 27.563 383.13 32.55 39 0.56% 2.1 47% 1.06 0.00 1.06 0 0.94 0.06 0.99 1.0 0.054 41.72 74.26 0.105 1.95 0.96 0.33 0.80 1.16 1.0 0.036 1.49 48.45 0.090 4.47 3.21 2 1.689954 28.024 2.683 32.548
11.319 5601.24 15.8 0.118 15.7 25.2 10.92 0.75%Sand-Slime Tailing 0.059 119.0 0.63 0.21 0.42 1 1.69 26.439 367.50 31.02 36 0.78% 2.2 47% 1.07 0.00 1.07 0 0.94 0.06 0.99 1.0 0.054 41.18 72.19 0.102 1.90 0.96 0.32 0.80 1.16 1.0 0.036 1.69 52.28 0.093 4.57 3.24 2 1.686149 26.704 2.5566 31.015
11.483 5601.08 12.9 0.083 12.7 24.3 10.51 0.64%Sand-Slime Tailing 0.059 119.0 0.64 0.22 0.42 1 1.70 21.658 301.05 25.45 29 0.68% 2.3 47% 1.08 0.00 1.08 0 0.94 0.06 0.99 1.0 0.054 39.23 64.68 0.093 1.74 0.95 0.29 0.80 1.15 1.0 0.037 1.84 46.90 0.089 4.32 3.03 2 1.7 21.915 2.0982 25.453
11.647 5600.91 11.0 0.114 10.8 43.0 18.65 1.03%Sand-Slime Tailing 0.059 119.0 0.65 0.22 0.43 1 1.70 18.309 254.50 21.80 24 1.10% 2.4 47% 1.09 0.00 1.09 0 0.94 0.05 0.99 1.0 0.054 37.95 59.74 0.088 1.63 0.95 0.27 0.80 1.15 1.0 0.037 2.46 53.63 0.094 4.52 3.08 2 1.7 18.766 1.7966 21.795
11.811 5600.75 9.6 0.088 9.2 64.1 27.78 0.91%Sand-Slime Tailing 0.059 119.0 0.66 0.23 0.43 1 1.70 15.691 218.10 19.01 21 0.98% 2.5 47% 1.10 0.00 1.10 0 0.94 0.05 0.99 1.0 0.054 36.97 55.98 0.084 1.56 0.95 0.25 0.80 1.15 1.0 0.037 2.62 49.79 0.091 4.34 2.95 2 1.7 16.371 1.5674 19.014
11.975 5600.59 9.8 0.035 9.4 61.1 26.46 0.36%Sand-Slime Tailing 0.059 119.0 0.67 0.23 0.44 1 1.70 16.014 222.59 19.35 21 0.38% 2.3 47% 1.11 0.00 1.11 0 0.94 0.05 0.99 1.0 0.053 37.09 56.44 0.084 1.57 0.95 0.25 0.80 1.15 1.0 0.037 1.93 37.34 0.081 3.81 2.69 2 1.7 16.662 1.5952 19.352
Scaling Factor for stress ration, rm
Volumetric Strain Ratio for Site-Specific Design Eart
Equiv. Number of Uniform Strain Cycles, N
Youd et al. (2001)
CSR
M=7.5,
s'v=1atm
0.15
Earthquake Moment Magnitude, M: 5.5
Magnitude Scaling Factor, MSF:
Equil Pore
Pressure at time of
Conditions at t1 Liquefaction Triggering Analyses Idriss & Boulanger (2008)Equil
Pore
Pressure
at t1CN qc1 qc1 qc1N
Normalized Cone
Penetration Resistance, Qt
Normalized Friction
Ratio, Fr (%)
Total Stress
at t1 Liquefiable?
1=Yes
2=No
Cyclic Stress RatioEffective
Stress at
t1
Saturated
at t1
Idriss & Boulanger (2008)
Idriss and Boulanger (2008)
Max. Horiz. Acceleration, Amax/g:
Earthquake Moment Magnitude, M:
Magnitude Scaling Factor, MSF:
WHITE MESA TAILINGS REPOSITORY LIQUEFACTION AND SEISMIC SETTLEMENT ANALYSES - 3-1S Elev. at
Top of Layer (ft)
Elev. At
Midpoint of Layer (ft)
Bottom
of Layer (ft)
Thickness of Layer (ft)
CSR
M=7.5,
s'v=1atm
Kc
High Compaction Layer
Platform/Random Fill Layer
Pw (u2)Pw (u2)
2013 CPT Data from ConeTec CPT Data Interpretations
fs/qt
Material Type (as determined
by fines
Unit Weight Unit Weight
Total Stress
at time of CPT
Depth
at time of CPT Elevation qt fs qc
Effective Stress at
time of CPT
Saturated
at time of CPT
Type Index, Ic FC
Youd, et al (2001)
Max. Horiz. Acceleration, Amax/g:
Stress at
Bottom of Layer (tsf)
Stress at
Midpoint of Layer (tsf)FINAL COVER
Erosion Protection Layer
Water Storage/Rooting Zone Layer
qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Equil Pore
Pressure at Midpoint of Layer (tsf)
Unit Weight (tcf)
Unit Weight (pcf)
Stress at
Bottom of Layer (tsf)
Stress at
Midpoint of Layer (tsf)
Pressure
at Bottom of Layer (tsf)
Cyclic Resistance Ratio
FoS
Cyclic Stress Ratio
FoS
∆qc1n qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Liquef_SeismicSettle_30Aug2015.xls Page 23 of 36
Energy Fuels Resources (USA) Inc.
White Mesa MillLiquefaction Analyses
Data File: 13-52106_SP3-1S-BSC-CPT 5608.00 Water surface elevation during CPT investigation (ft 5612.56 Ground Surface Elevation at time of CPT (ft amsl)Location: White Mesa 2013 CPT Investigation 0.15 5604.28 Water surface elevation at t0 (ft amsl)5620.47 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl)
..\..\..\6.2.3 Field Data\2013 Field Investigation\Conetec Dat 5.5 5595.59 Water surface elevation at t1 (ft amsl) 0.50 Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after pla ###### 5620.22 5619.97 0.50 0.055 110 0.028 0.014 0.00 0.00 0.028 0.014
Tailings Sands 1.69 5590.59 Water surface elevation at t2 (ft amsl)3.50 Thickness of Water Storage/Rooting Zone (ft) ###### 5618.22 5616.47 3.50 0.054 107 0.215 0.121 0.00 0.00 0.215 0.121
Tailings Sand-Slimes 3.50 Thickness of High Compaction Layer (ft)###### 5614.72 5612.97 3.50 0.060 120 0.424 0.320 0.00 0.00 0.424 0.320
Tailings Slimes 1.44 0.41 Thickness of Random/Platform Fill on on top of existing interim cover (ft) ###### 5612.77 5612.56 0.41 0.050 101 0.445 0.434 0.00 0.00 0.445 0.434
Interim Cover 0.47 887.10 Additional Stress due to Final Cover Placement, ΔσFC (psf)
Cells Requiring User Input/Manipulation 2.21 2.21 7.51 5590.59 Elevation of bottom of tailings (liner) (ft amsl)
rd Cσ Kσ Ka rd Dr f Kσ Ka Avg CN qc1 qc1 qc1N
(ft) (ft amsl) TSF TSF TSF (ft) PSI (%) (tcf) (pcf) (tsf)(tsf)(tsf) 1=Yes TSF MPa % (tsf)(tsf)(tsf) 1=Yes FoS TSF MPa
0=No 0=No
Scaling Factor for stress ration, rm
Volumetric Strain Ratio for Site-Specific Design Eart
Equiv. Number of Uniform Strain Cycles, N
Youd et al. (2001)
CSR
M=7.5,
s'v=1atm
0.15
Earthquake Moment Magnitude, M: 5.5
Magnitude Scaling Factor, MSF:
Equil Pore
Pressure at time of
Conditions at t1 Liquefaction Triggering Analyses Idriss & Boulanger (2008)Equil
Pore
Pressure
at t1CN qc1 qc1 qc1N
Normalized Cone
Penetration Resistance, Qt
Normalized Friction
Ratio, Fr (%)
Total Stress
at t1 Liquefiable?
1=Yes
2=No
Cyclic Stress RatioEffective
Stress at
t1
Saturated
at t1
Idriss & Boulanger (2008)
Idriss and Boulanger (2008)
Max. Horiz. Acceleration, Amax/g:
Earthquake Moment Magnitude, M:
Magnitude Scaling Factor, MSF:
WHITE MESA TAILINGS REPOSITORY LIQUEFACTION AND SEISMIC SETTLEMENT ANALYSES - 3-1S Elev. at
Top of Layer (ft)
Elev. At
Midpoint of Layer (ft)
Bottom
of Layer (ft)
Thickness of Layer (ft)
CSR
M=7.5,
s'v=1atm
Kc
High Compaction Layer
Platform/Random Fill Layer
Pw (u2)Pw (u2)
2013 CPT Data from ConeTec CPT Data Interpretations
fs/qt
Material Type (as determined
by fines
Unit Weight Unit Weight
Total Stress
at time of CPT
Depth
at time of CPT Elevation qt fs qc
Effective Stress at
time of CPT
Saturated
at time of CPT
Type Index, Ic FC
Youd, et al (2001)
Max. Horiz. Acceleration, Amax/g:
Stress at
Bottom of Layer (tsf)
Stress at
Midpoint of Layer (tsf)FINAL COVER
Erosion Protection Layer
Water Storage/Rooting Zone Layer
qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Equil Pore
Pressure at Midpoint of Layer (tsf)
Unit Weight (tcf)
Unit Weight (pcf)
Stress at
Bottom of Layer (tsf)
Stress at
Midpoint of Layer (tsf)
Pressure
at Bottom of Layer (tsf)
Cyclic Resistance Ratio
FoS
Cyclic Stress Ratio
FoS
∆qc1n qc1n-cs
(CRR)
M=7.5,
s'v=1atm
12.139 5600.42 9.7 0.064 9.4 51.9 22.49 0.66%Sand-Slime Tailing 0.059 119.0 0.68 0.24 0.44 1 1.69 15.804 219.68 18.99 20 0.71% 2.4 47% 1.12 0.00 1.12 0 0.94 0.05 0.99 1.0 0.053 36.96 55.95 0.083 1.56 0.95 0.25 0.80 1.14 1.0 0.037 2.36 44.75 0.087 4.06 2.81 2 1.688489 16.351 1.5655 18.991
12.303 5600.26 11.1 0.121 10.7 65.5 28.37 1.09%Sand-Slime Tailing 0.059 119.0 0.69 0.24 0.45 1 1.67 17.874 248.45 21.55 23 1.16% 2.5 47% 1.13 0.00 1.13 0 0.94 0.05 0.99 1.0 0.053 37.86 59.41 0.087 1.64 0.95 0.27 0.80 1.14 1.0 0.037 2.59 55.72 0.096 4.42 3.03 2 1.670492 18.557 1.7766 21.553
12.467 5600.09 16.8 0.110 16.4 67.8 29.38 0.66%Sand-Slime Tailing 0.059 119.0 0.70 0.25 0.45 1 1.60 26.138 363.32 31.14 36 0.68% 2.2 47% 1.14 0.00 1.14 0 0.93 0.06 0.98 1.0 0.053 41.22 72.37 0.103 1.93 0.95 0.32 0.80 1.14 1.0 0.037 1.64 50.96 0.092 4.21 3.07 2 1.596709 26.814 2.5672 31.143
12.631 5599.93 30.9 0.086 30.8 23.6 10.23 0.28%Sand Tailings 0.062 123.5 0.71 0.25 0.45 1 1.49 45.876 637.67 53.54 66 0.28% 1.8 18% 1.15 0.00 1.15 0 0.93 0.07 0.98 1.0 0.053 35.78 89.31 0.126 2.39 0.95 0.42 0.79 1.14 1.0 0.037 1.09 58.49 0.099 4.45 3.42 2 1.490923 46.095 4.4132 53.537
12.795 5599.76 30.6 0.167 30.5 23.2 10.07 0.55%Sand-Slime Tailing 0.059 119.0 0.72 0.26 0.46 1 1.48 45.191 628.16 52.74 65 0.56% 1.9 47% 1.16 0.00 1.16 0 0.93 0.07 0.98 1.0 0.053 48.80 101.53 0.145 2.75 0.95 0.42 0.79 1.14 1.0 0.037 1.21 63.65 0.104 4.64 3.70 2 1.484114 45.406 4.3472 52.737
12.959 5599.60 24.9 0.293 24.8 9.7 4.19 1.18%Sand-Slime Tailing 0.059 119.0 0.73 0.26 0.46 1 1.51 37.430 520.28 43.58 52 1.21% 2.2 47% 1.17 0.00 1.17 0 0.93 0.07 0.98 1.0 0.053 45.59 89.16 0.126 2.39 0.95 0.38 0.80 1.13 1.0 0.037 1.63 71.04 0.113 5.01 3.70 2 1.506858 37.521 3.5923 43.579
13.123 5599.44 22.1 0.250 22.0 13.6 5.90 1.13%Sand-Slime Tailing 0.059 119.0 0.74 0.27 0.47 1 1.52 33.392 464.15 38.93 46 1.17% 2.2 47% 1.18 0.00 1.18 0 0.93 0.06 0.98 1.0 0.053 43.96 82.89 0.117 2.22 0.95 0.36 0.80 1.13 1.0 0.037 1.72 67.05 0.108 4.73 3.47 2 1.515057 33.521 3.2093 38.932
13.287 5599.27 17.9 0.174 17.8 18.4 7.98 0.97%Sand-Slime Tailing 0.059 119.0 0.75 0.27 0.47 1 1.54 27.284 379.25 31.89 36 1.02% 2.3 47% 1.19 0.00 1.19 0 0.93 0.06 0.98 1.0 0.053 41.49 73.38 0.104 1.97 0.95 0.33 0.80 1.13 1.0 0.037 1.86 59.29 0.099 4.31 3.14 2 1.535421 27.461 2.6291 31.894
13.451 5599.11 18.6 0.120 18.3 33.7 14.61 0.65%Sand-Slime Tailing 0.059 119.0 0.76 0.28 0.48 1 1.52 27.891 387.68 32.76 37 0.67% 2.2 47% 1.20 0.00 1.20 0 0.93 0.06 0.98 1.0 0.052 41.79 74.56 0.105 2.01 0.95 0.33 0.80 1.12 1.0 0.037 1.60 52.27 0.093 4.01 3.01 2 1.520751 28.211 2.7009 32.765
13.615 5598.94 19.0 0.093 18.8 27.6 11.94 0.49%Sand-Slime Tailing 0.059 119.0 0.77 0.28 0.48 1 1.51 28.342 393.95 33.22 38 0.51% 2.1 47% 1.21 0.00 1.21 0 0.93 0.06 0.98 1.0 0.052 41.95 75.17 0.106 2.03 0.95 0.33 0.80 1.12 1.0 0.037 1.47 48.88 0.091 3.86 2.95 2 1.508334 28.601 2.7383 33.218
13.779 5598.78 18.8 0.035 18.6 24.7 10.70 0.19%Sand-Slime Tailing 0.059 119.0 0.77 0.29 0.49 1 1.50 27.908 387.92 32.68 37 0.19% 2.0 47% 1.22 0.00 1.22 0 0.92 0.06 0.98 1.0 0.052 41.76 74.45 0.105 2.01 0.95 0.33 0.80 1.12 1.0 0.037 1.26 41.27 0.084 3.56 2.79 2 1.500419 28.139 2.694 32.682
13.943 5598.62 17.5 0.045 17.4 14.9 6.47 0.26%Sand-Slime Tailing 0.059 119.0 0.78 0.29 0.49 1 1.50 26.084 362.57 30.46 34 0.27% 2.0 47% 1.23 0.00 1.23 0 0.92 0.06 0.98 1.0 0.052 40.98 71.44 0.101 1.94 0.95 0.32 0.80 1.12 1.0 0.037 1.36 41.55 0.085 3.54 2.74 2 1.499961 26.224 2.5107 30.458
14.107 5598.45 15.4 0.100 15.2 27.0 11.68 0.65%Sand-Slime Tailing 0.059 119.0 0.79 0.30 0.50 1 1.51 22.922 318.61 26.92 29 0.69% 2.3 47% 1.24 0.00 1.24 0 0.92 0.06 0.98 1.0 0.052 39.74 66.66 0.096 1.83 0.95 0.30 0.80 1.12 1.0 0.037 1.84 49.42 0.091 3.78 2.80 2 1.506034 23.175 2.2188 26.917
14.271 5598.29 16.8 0.261 16.6 35.9 15.54 1.55%Sand-Slime Tailing 0.059 119.0 0.80 0.30 0.50 1 1.49 24.694 343.25 29.07 32 1.63% 2.4 47% 1.25 0.00 1.25 0 0.92 0.06 0.98 1.0 0.052 40.50 69.56 0.099 1.90 0.95 0.31 0.80 1.11 1.0 0.038 2.44 71.02 0.113 4.66 3.28 2 1.485827 25.027 2.3961 29.068
14.436 5598.12 15.9 0.208 15.7 41.2 17.86 1.31%Sand-Slime Tailing 0.059 119.0 0.81 0.31 0.51 1 1.48 23.240 323.03 27.43 30 1.38% 2.4 47% 1.26 0.00 1.26 0 0.92 0.06 0.98 1.0 0.052 39.92 67.36 0.096 1.85 0.95 0.30 0.80 1.11 1.0 0.038 2.37 64.97 0.106 4.30 3.07 2 1.483063 23.621 2.2615 27.435
14.600 5597.96 17.8 0.165 17.6 26.3 11.41 0.93%Sand-Slime Tailing 0.059 119.0 0.82 0.31 0.51 1 1.46 25.776 358.29 30.22 33 0.97% 2.3 47% 1.27 0.00 1.27 0 0.92 0.06 0.98 1.0 0.052 40.90 71.12 0.101 1.95 0.95 0.32 0.80 1.11 1.0 0.038 1.92 58.11 0.098 3.97 2.96 2 1.461241 26.017 2.4908 30.217
14.764 5597.80 15.1 0.105 15.0 29.7 12.88 0.69%Sand-Slime Tailing 0.059 119.0 0.83 0.32 0.52 1 1.47 21.980 305.52 25.85 28 0.73% 2.3 47% 1.28 0.00 1.28 0 0.92 0.06 0.98 1.0 0.052 39.37 65.21 0.094 1.81 0.95 0.29 0.80 1.11 1.0 0.038 1.95 50.29 0.092 3.68 2.74 2 1.470246 22.253 2.1305 25.846
14.928 5597.63 16.4 0.396 16.2 36.8 15.96 2.41%Sand-Slime Tailing 0.059 119.0 0.84 0.32 0.52 1 1.45 23.488 326.48 27.67 30 2.55% 2.6 47% 1.29 0.00 1.29 0 0.92 0.06 0.98 1.0 0.052 40.00 67.67 0.097 1.87 0.95 0.30 0.80 1.11 1.0 0.038 3.16 87.53 0.142 5.65 3.76 2 1.45255 23.822 2.2807 27.667
15.092 5597.47 15.6 0.201 15.3 59.5 25.80 1.29%Sand-Slime Tailing 0.059 119.0 0.85 0.33 0.52 1 1.45 22.121 307.48 26.32 28 1.36% 2.4 47% 1.30 0.00 1.30 0 0.91 0.06 0.98 1.0 0.052 39.53 65.85 0.095 1.83 0.95 0.30 0.80 1.10 1.0 0.038 2.44 64.33 0.105 4.12 2.98 2 1.448658 22.659 2.1694 26.317
15.256 5597.30 25.6 0.270 25.4 23.7 10.26 1.06%Sand-Slime Tailing 0.059 119.0 0.86 0.33 0.53 1 1.39 35.271 490.27 41.20 47 1.09% 2.2 47% 1.31 0.00 1.31 0 0.91 0.07 0.97 1.0 0.051 44.75 85.96 0.121 2.36 0.95 0.37 0.80 1.10 1.0 0.038 1.66 68.40 0.110 4.28 3.32 2 1.388093 35.477 3.3965 41.204
15.420 5597.14 21.4 0.308 21.3 15.0 6.48 1.44%Sand-Slime Tailing 0.059 119.0 0.87 0.34 0.53 1 1.40 29.754 413.58 34.71 38 1.50% 2.3 47% 1.32 0.00 1.32 0 0.91 0.06 0.97 1.0 0.051 42.47 77.18 0.109 2.12 0.95 0.34 0.80 1.10 1.0 0.038 2.11 73.21 0.116 4.51 3.31 2 1.399511 29.884 2.8611 34.709
15.584 5596.98 18.8 0.188 18.7 18.8 8.16 1.00%Sand-Slime Tailing 0.059 119.0 0.88 0.34 0.54 1 1.40 26.274 365.21 30.71 33 1.05% 2.3 47% 1.33 0.00 1.33 0 0.91 0.06 0.97 1.0 0.051 41.07 71.78 0.102 1.98 0.95 0.32 0.80 1.10 1.0 0.038 1.98 60.69 0.101 3.87 2.93 2 1.404285 26.439 2.5313 30.708
15.748 5596.81 20.6 0.295 20.4 18.0 7.78 1.44%Sand-Slime Tailing 0.059 119.0 0.89 0.35 0.54 1 1.39 28.363 394.25 33.12 36 1.50% 2.4 47% 1.34 0.00 1.34 0 0.91 0.06 0.97 1.0 0.051 41.92 75.04 0.106 2.07 0.94 0.33 0.80 1.10 1.0 0.038 2.18 72.28 0.115 4.38 3.23 2 1.387634 28.519 2.7304 33.123
15.912 5596.65 16.7 0.170 16.4 37.1 16.09 1.02%Sand-Slime Tailing 0.059 119.0 0.90 0.35 0.55 1 1.40 22.984 319.47 27.07 29 1.08% 2.4 47% 1.35 0.00 1.35 0 0.91 0.06 0.97 1.0 0.051 39.80 66.87 0.096 1.87 0.94 0.30 0.80 1.09 1.0 0.038 2.19 59.36 0.099 3.76 2.81 2 1.399728 23.308 2.2315 27.071
16.076 5596.48 19.8 0.165 19.5 48.9 21.20 0.83%Sand-Slime Tailing 0.059 119.0 0.91 0.36 0.55 1 1.38 26.799 372.50 31.61 34 0.87% 2.3 47% 1.36 0.00 1.36 0 0.91 0.06 0.97 1.0 0.051 41.39 73.00 0.103 2.03 0.94 0.32 0.80 1.09 1.0 0.038 1.82 57.57 0.098 3.66 2.84 2 1.375706 27.219 2.6059 31.613
16.240 5596.32 21.9 0.284 21.7 42.0 18.19 1.30%Sand-Slime Tailing 0.059 119.0 0.92 0.36 0.56 1 1.36 29.415 408.87 34.58 38 1.35% 2.3 47% 1.36 0.00 1.36 0 0.91 0.06 0.97 1.0 0.051 42.43 77.01 0.109 2.13 0.94 0.34 0.80 1.09 1.0 0.038 2.04 70.42 0.112 4.18 3.16 2 1.358653 29.771 2.8503 34.577
16.404 5596.16 21.9 0.319 21.5 65.3 28.28 1.46%Sand-Slime Tailing 0.059 119.0 0.93 0.37 0.56 1 1.35 29.002 403.13 34.32 37 1.52% 2.4 47% 1.37 0.00 1.37 0 0.90 0.06 0.97 1.0 0.051 42.34 76.66 0.108 2.13 0.94 0.34 0.80 1.09 1.0 0.038 2.16 74.09 0.118 4.34 3.24 2 1.351456 29.553 2.8294 34.324
16.568 5595.99 28.0 0.500 27.9 24.0 10.38 1.78%Sand-Slime Tailing 0.059 119.0 0.94 0.37 0.57 1 1.32 36.866 512.44 43.05 48 1.85% 2.3 47% 1.38 0.00 1.38 0 0.90 0.07 0.97 1.0 0.051 45.40 88.45 0.125 2.46 0.94 0.38 0.80 1.09 1.0 0.038 2.04 87.67 0.143 5.22 3.84 2 1.321846 37.064 3.5485 43.048
16.732 5595.83 19.0 0.522 18.7 40.7 17.62 2.75%Slime Tailings 0.057 113.1 0.95 0.38 0.57 1 1.35 25.254 351.03 29.73 32 2.90% 2.6 71% 1.39 0.00 1.39 0 0.90 0.06 0.97 1.0 0.051 40.44 70.17 0.100 1.97 0.94 0.31 0.80 1.09 1.0 0.038 3.27 97.24 0.166 6.01 3.99 2 1.349769 25.597 2.4506 29.729
16.896 5595.66 22.1 0.393 21.4 112.6 48.78 1.78%Sand-Slime Tailing 0.059 119.0 0.96 0.38 0.57 1 1.33 28.441 395.33 34.12 37 1.86% 2.4 47% 1.40 0.00 1.40 0 0.90 0.06 0.97 1.0 0.051 42.27 76.39 0.108 2.13 0.94 0.34 0.80 1.08 1.0 0.038 2.39 81.44 0.130 4.69 3.41 2 1.329655 29.376 2.8124 34.118
17.060 5595.50 22.9 0.460 22.6 47.8 20.69 2.01%Sand-Slime Tailing 0.059 119.0 0.97 0.39 0.58 1 1.32 29.824 414.56 35.10 38 2.10% 2.4 47% 1.41 0.00 1.41 1 0.90 0.06 0.97 1.0 0.051 42.61 77.71 0.110 2.17 0.94 0.34 0.80 1.08 1.0 0.038 2.49 87.26 0.142 5.06 3.62 2 1.31966 30.218 2.893 35.096
17.224 5595.34 19.0 0.308 18.5 76.9 33.34 1.62%Sand-Slime Tailing 0.059 119.0 0.98 0.40 0.58 1 1.33 24.585 341.73 29.29 31 1.71% 2.5 47% 1.42 0.01 1.42 1 0.90 0.06 0.97 1.0 0.051 40.58 69.87 0.099 1.96 0.94 0.31 0.80 1.08 1.0 0.039 2.56 74.93 0.119 4.21 3.08 2 1.327489 25.223 2.4148 29.295
17.388 5595.17 26.8 0.182 26.7 20.4 8.84 0.68%Sand-Slime Tailing 0.059 119.0 0.99 0.40 0.59 1 1.29 34.509 479.67 40.27 44 0.70% 2.1 47% 1.43 0.01 1.42 1 0.90 0.07 0.97 1.0 0.051 44.43 84.70 0.119 2.35 0.94 0.37 0.80 1.08 1.0 0.039 1.49 59.88 0.100 3.49 2.92 2 1.293425 34.673 3.3196 40.271
17.552 5595.01 24.3 0.073 24.2 8.2 3.55 0.30%Sand-Slime Tailing 0.059 119.0 1.00 0.41 0.59 1 1.29 31.333 435.53 36.47 39 0.31% 2.0 47% 1.44 0.02 1.42 1 0.90 0.06 0.97 1.0 0.051 43.09 79.56 0.112 2.21 0.94 0.35 0.80 1.08 1.0 0.039 1.31 47.86 0.090 3.10 2.65 2 1.294762 31.399 3.0062 36.469
17.716 5594.84 21.7 0.073 21.6 11.9 5.16 0.34%Sand-Slime Tailing 0.059 119.0 1.01 0.41 0.60 1 1.30 27.980 388.93 32.61 35 0.35% 2.1 47% 1.45 0.02 1.43 1 0.89 0.06 0.97 1.0 0.051 41.74 74.35 0.105 2.06 0.94 0.33 0.80 1.08 1.0 0.039 1.42 46.25 0.089 3.02 2.54 2 1.29659 28.077 2.6881 32.609
17.880 5594.68 17.6 0.073 17.5 13.5 5.83 0.42%Sand-Slime Tailing 0.059 119.0 1.02 0.42 0.60 1 1.30 22.828 317.31 26.64 27 0.44% 2.2 47% 1.46 0.03 1.43 1 0.89 0.06 0.97 1.0 0.051 39.64 66.29 0.095 1.86 0.94 0.30 0.80 1.07 1.0 0.039 1.68 44.88 0.087 2.95 2.41 2 1.304474 22.938 2.1961 26.641
Liquef_SeismicSettle_30Aug2015.xls Page 24 of 36
Energy Fuels Resources (USA) Inc.White Mesa Mill
Liquefaction Analyses
Data File: 13-52106_SP3-2C-BSC-CPT 5605.30 Water surface elevation during CPT investigation (ft a5610.82 Ground Surface Elevation at time of CPT (ft amsl)
Location: White Mesa 2013 CPT Investigation 0.15 5602.54 Water surface elevation at t0 (ft amsl)5621.51 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl)
..\..\..\6.2.3 Field Data\2013 Field Investigation\Conetec Data 5.5 5591.64 Water surface elevation at t1 (ft amsl)0.50 Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after place 5621.51 5621.26 5621.01 0.50 0.055 110 0.028 0.014 0.00 0.00 0.028 0.014
Tailings Sands 1.69 5586.64 Water surface elevation at t2 (ft amsl)3.50 Thickness of Water Storage/Rooting Zone (ft)5621.01 5619.26 5617.51 3.50 0.054 107 0.215 0.121 0.00 0.00 0.215 0.121
Tailings Sand-Slimes 3.50 Thickness of High Compaction Layer (ft)5617.51 5615.76 5614.01 3.50 0.060 120 0.424 0.320 0.00 0.00 0.424 0.320
Tailings Slimes 1.44 3.19 Thickness of Random/Platform Fill on on top of existing interim cover (ft) 5614.01 5612.415 5610.82 3.19 0.050 101 0.585 0.504 0.00 0.00 0.585 0.504
Interim Cover 0.47 1167.12 Additional Stress due to Final Cover Placement, ΔσFC (psf)
Cells Requiring User Input/Manipulation 2.21 2.21 7.51 5586.64 Elevation of bottom of tailings (liner) (ft amsl)
rd Cσ Kσ Ka rd Dr ffKσ Ka Avg CN qc1 qc1 qc1N
(ft) (ft amsl) TSF TSF TSF (ft) PSI (%) (tcf) (pcf) (tsf)(tsf)(tsf) 1=Yes TSF MPa % (tsf)(tsf)(tsf) 1=Yes FoS TSF MPa
0=No 0=No
0.164 5610.66 9.5 0.818 9.5 10.4 4.49 8.58%Interim Cover 0.050 100.7 0.01 0.00 0.01 0 1.70 16.099 223.78 18.83 1153 8.59% 2.2 51% 0.59 0.00 0.59 0 1.00 0.05 1.02 1.0 0.059 36.93 55.75 0.083 1.41 0.97 0.25 0.80 0.80 2.53 1.0 0.017 1.65 31.02 0.076 183.93 92.67 2 1.7 16.209 1.5519 18.826
0.328 5610.49 67.8 0.428 67.8 8.7 3.76 0.63%Interim Cover 0.050 100.7 0.02 0.00 0.02 0 1.70 115.243 1601.88 133.95 4105 0.63% 1.0 51% 0.60 0.00 0.60 0 1.00 0.14 1.05 1.0 0.061 77.33 211.28 1.000 16.47 0.97 0.67 0.67 0.67 3.75 1.0 0.011 1.00 133.95 0.304 368.22 192.34 2 1.7 115.34 11.042 133.955
0.492 5610.33 104.7 0.603 104.6 7.9 3.44 0.58%Interim Cover 0.050 100.7 0.02 0.00 0.02 0 1.70 177.871 2472.41 206.68 4223 0.58% 1.0 51% 0.61 0.00 0.61 0 1.00 0.28 1.10 1.0 0.064 102.85 309.54 1.000 15.74 0.97 0.83 0.58 0.58 4.36 1.0 0.010 1.00 206.68 1.000 809.03 412.39 2 1.7 177.96 17.037 206.684
0.656 5610.16 73.4 0.695 73.3 5.6 2.42 0.95%Interim Cover 0.050 100.7 0.03 0.00 0.03 0 1.70 124.661 1732.79 144.86 2219 0.95% 1.2 51% 0.62 0.00 0.62 0 1.00 0.15 1.05 1.0 0.061 81.15 226.01 1.000 16.46 0.97 0.69 0.65 0.65 3.10 1.0 0.014 1.00 144.86 0.363 220.15 118.30 2 1.7 124.72 11.941 144.855
0.820 5610.00 90.8 1.617 90.7 4.4 1.90 1.78%Interim Cover 0.050 100.7 0.04 0.00 0.04 0 1.70 154.241 2143.95 179.20 2196 1.78% 1.5 51% 0.62 0.00 0.62 0 1.00 0.21 1.07 1.0 0.062 93.21 272.40 1.000 16.21 0.97 0.77 0.61 0.61 3.23 1.0 0.013 1.00 179.20 1.000 485.80 251.00 2 1.7 154.29 14.771 179.196
0.984 5609.84 98.7 0.951 98.7 4.8 2.06 0.96%Interim Cover 0.050 100.7 0.05 0.00 0.05 0 1.70 167.790 2332.28 194.94 1991 0.96% 1.2 51% 0.63 0.00 0.63 0 1.00 0.25 1.08 1.0 0.062 98.73 293.67 1.000 16.07 0.97 0.81 0.60 0.60 3.13 1.0 0.014 1.00 194.94 1.000 404.99 210.53 2 1.7 167.84 16.069 194.937
1.148 5609.67 142.9 1.153 142.9 5.8 2.53 0.81%Interim Cover 0.050 100.7 0.06 0.00 0.06 0 1.70 242.879 3376.02 282.16 2470 0.81% 1.1 51% 0.64 0.00 0.64 0 1.00 0.30 1.09 1.0 0.063 129.34 411.50 1.000 15.89 0.97 0.97 0.60 0.60 2.95 1.0 0.015 1.00 282.16 1.000 347.27 181.58 2 1.7 242.94 23.259 282.161
1.312 5609.51 142.3 0.768 142.3 5.6 2.43 0.54%Interim Cover 0.050 100.7 0.07 0.00 0.07 0 1.70 241.910 3362.55 281.03 2153 0.54% 1.0 51% 0.65 0.00 0.65 0 1.00 0.30 1.08 1.0 0.063 128.94 409.98 1.000 15.95 0.97 0.97 0.60 0.60 2.79 1.0 0.015 1.00 281.03 1.000 303.98 159.97 2 1.7 241.97 23.166 281.033
1.476 5609.34 150.3 0.964 150.3 3.4 1.49 0.64%Interim Cover 0.050 100.7 0.07 0.00 0.07 0 1.70 255.544 3552.06 296.84 2021 0.64% 1.0 51% 0.66 0.00 0.66 0 1.00 0.30 1.08 1.0 0.062 134.49 431.33 1.000 16.01 0.97 0.99 0.60 0.60 2.66 1.0 0.016 1.00 296.84 1.000 270.31 143.16 2 1.7 255.58 24.469 296.841
1.640 5609.18 142.9 0.948 142.9 4.8 2.08 0.66%Interim Cover 0.050 100.7 0.08 0.00 0.08 0 1.70 242.862 3375.78 282.13 1729 0.66% 1.1 51% 0.67 0.00 0.67 0 1.00 0.30 1.08 1.0 0.062 129.33 411.46 1.000 16.06 0.97 0.97 0.60 0.60 2.55 1.0 0.017 1.00 282.13 1.000 243.38 129.72 2 1.7 242.91 23.256 282.129
1.804 5609.02 129.8 0.906 129.8 4.9 2.12 0.70%Interim Cover 0.050 100.7 0.09 0.00 0.09 0 1.70 220.643 3066.94 256.32 1428 0.70% 1.1 51% 0.67 0.00 0.67 0 1.00 0.30 1.07 1.0 0.062 120.27 376.60 1.000 16.12 0.97 0.92 0.60 0.60 2.46 1.0 0.017 1.00 256.32 1.000 221.34 118.73 2 1.7 220.69 21.129 256.324
1.968 5608.85 134.9 1.437 134.9 3.7 1.61 1.07%Interim Cover 0.050 100.7 0.10 0.00 0.10 0 1.70 229.313 3187.45 266.38 1360 1.07% 1.3 51% 0.68 0.00 0.68 0 1.00 0.30 1.07 1.0 0.062 123.80 390.18 1.000 16.19 0.97 0.94 0.60 0.60 2.37 1.0 0.018 1.00 266.38 1.000 202.98 109.58 2 1.7 229.35 21.958 266.379
2.133 5608.69 130.9 0.753 130.9 2.7 1.15 0.58%Interim Cover 0.050 100.7 0.11 0.00 0.11 0 1.70 222.496 3092.69 258.45 1218 0.58% 1.1 51% 0.69 0.00 0.69 0 1.00 0.30 1.07 1.0 0.062 121.02 379.47 1.000 16.25 0.97 0.93 0.60 0.60 2.30 1.0 0.019 1.00 258.45 1.000 187.44 101.85 2 1.7 222.52 21.304 258.448
2.297 5608.52 120.4 0.968 120.4 3.4 1.47 0.80%Interim Cover 0.050 100.7 0.12 0.00 0.12 0 1.70 204.714 2845.52 237.80 1040 0.80% 1.2 51% 0.70 0.00 0.70 0 1.00 0.30 1.06 1.0 0.061 113.77 351.58 1.000 16.32 0.97 0.89 0.60 0.60 2.23 1.0 0.019 1.00 237.80 1.000 174.12 95.22 2 1.7 204.75 19.603 237.805
2.461 5608.36 98.7 1.136 98.7 3.8 1.64 1.15%Interim Cover 0.050 100.7 0.12 0.00 0.12 0 1.70 167.773 2332.04 194.90 796 1.15% 1.4 51% 0.71 0.00 0.71 0 1.00 0.25 1.05 1.0 0.060 98.72 293.62 1.000 16.55 0.97 0.81 0.60 0.60 2.17 1.0 0.020 1.00 194.90 1.000 162.57 89.56 2 1.7 167.81 16.066 194.905
2.625 5608.20 75.5 1.164 75.5 3.5 1.50 1.54%Interim Cover 0.050 100.7 0.13 0.00 0.13 0 1.70 128.367 1784.30 149.13 570 1.54% 1.6 51% 0.72 0.00 0.72 0 1.00 0.16 1.03 1.0 0.059 82.66 231.79 1.000 16.88 0.97 0.71 0.65 0.65 1.94 1.0 0.022 1.00 149.13 0.388 59.23 38.05 2 1.7 128.4 12.293 149.133
2.789 5608.03 54.0 0.768 54.0 2.0 0.85 1.42%Interim Cover 0.050 100.7 0.14 0.00 0.14 0 1.70 91.749 1275.31 106.59 383 1.43% 1.6 51% 0.72 0.00 0.72 0 0.99 0.11 1.02 1.0 0.059 67.72 174.31 0.455 7.77 0.97 0.60 0.70 0.70 1.72 1.0 0.025 1.00 106.59 0.193 27.65 17.71 2 1.7 91.77 8.786 106.585
2.953 5607.87 50.1 0.997 50.1 1.2 0.53 1.99%Interim Cover 0.050 100.7 0.15 0.00 0.15 0 1.70 85.136 1183.39 98.90 336 2.00% 1.8 51% 0.73 0.00 0.73 0 0.99 0.11 1.02 1.0 0.058 65.03 163.92 0.354 6.06 0.97 0.57 0.71 0.71 1.66 1.0 0.026 1.10 108.69 0.199 27.05 16.55 2 1.7 85.149 8.1522 98.895
3.117 5607.70 56.9 1.094 56.9 2.7 1.18 1.92%Interim Cover 0.050 100.7 0.16 0.00 0.16 0 1.70 96.713 1344.31 112.36 362 1.93% 1.8 51% 0.74 0.00 0.74 0 0.99 0.12 1.02 1.0 0.058 69.75 182.11 0.572 9.79 0.97 0.61 0.69 0.69 1.68 1.0 0.025 1.08 121.15 0.245 31.54 20.67 2 1.7 96.742 9.2621 112.360
3.281 5607.54 64.2 0.738 64.2 2.1 0.92 1.15%Sand Tailings 0.051 102.8 0.17 0.00 0.17 0 1.70 109.174 1517.52 126.83 387 1.15% 1.6 18% 0.75 0.00 0.75 0 0.99 0.13 1.02 1.0 0.058 54.51 181.34 0.558 9.56 0.97 0.65 0.67 0.67 1.71 1.0 0.025 1.00 126.83 0.270 32.92 21.24 2 1.7 109.2 10.454 126.825
3.445 5607.38 52.1 0.886 52.1 2.0 0.87 1.70%Sand-Slime Tailing 0.047 93.3 0.17 0.00 0.17 0 1.70 88.570 1231.12 102.89 300 1.71% 1.8 47% 0.76 0.00 0.76 0 0.99 0.11 1.01 1.0 0.058 66.39 169.28 0.400 6.89 0.97 0.59 0.71 0.71 1.60 1.0 0.027 1.08 110.88 0.207 24.13 15.51 2 1.7 88.591 8.4817 102.893
3.609 5607.21 29.1 1.041 29.1 0.7 0.30 3.58%Slime Tailings 0.041 82.7 0.18 0.00 0.18 0 1.70 49.436 687.16 57.43 161 3.60% 2.2 71% 0.76 0.00 0.76 0 0.99 0.08 1.01 1.0 0.058 50.09 107.51 0.155 2.69 0.97 0.44 0.78 0.78 1.41 1.0 0.030 1.62 93.01 0.155 17.39 10.04 2 1.7 49.443 4.7337 57.426
3.773 5607.05 21.5 1.042 21.5 1.5 0.65 4.84%Slime Tailings 0.041 82.7 0.19 0.00 0.19 0 1.70 36.550 508.05 42.47 114 4.89% 2.4 71% 0.77 0.00 0.77 0 0.99 0.07 1.01 1.0 0.058 44.88 87.35 0.123 2.13 0.97 0.38 0.80 0.80 1.36 1.0 0.031 2.21 93.92 0.157 17.01 9.57 2 1.7 36.566 3.5008 42.469
3.937 5606.88 16.3 0.676 16.3 3.3 1.44 4.14%Slime Tailings 0.041 82.7 0.19 0.00 0.19 0 1.70 27.744 385.64 32.26 83 4.19% 2.4 71% 0.78 0.00 0.78 0 0.99 0.06 1.01 1.0 0.058 41.32 73.59 0.104 1.81 0.97 0.33 0.80 0.80 1.35 1.0 0.032 2.34 75.43 0.120 12.54 7.17 2 1.7 27.779 2.6596 32.264
4.101 5606.72 18.3 0.612 18.2 5.0 2.18 3.35%Slime Tailings 0.041 82.7 0.20 0.00 0.20 0 1.70 31.008 431.01 36.08 90 3.39% 2.3 71% 0.78 0.00 0.78 0 0.99 0.06 1.01 1.0 0.057 42.65 78.73 0.111 1.93 0.97 0.35 0.80 0.80 1.34 1.0 0.032 1.99 71.97 0.115 11.59 6.76 2 1.7 31.061 2.9738 36.076
4.265 5606.55 15.1 0.610 15.0 4.1 1.76 4.05%Slime Tailings 0.041 82.7 0.21 0.00 0.21 0 1.70 25.568 355.40 29.75 72 4.11% 2.4 71% 0.79 0.00 0.79 0 0.99 0.06 1.01 1.0 0.057 40.45 70.19 0.100 1.74 0.97 0.31 0.80 0.80 1.33 1.0 0.032 2.49 74.20 0.118 11.54 6.64 2 1.7 25.611 2.452 29.746
4.429 5606.39 19.3 0.601 19.3 4.8 2.09 3.11%Slime Tailings 0.041 82.7 0.21 0.00 0.21 0 1.70 32.810 456.06 38.17 89 3.14% 2.3 71% 0.80 0.00 0.80 0 0.99 0.06 1.00 1.0 0.057 43.38 81.55 0.115 2.00 0.96 0.36 0.80 0.80 1.32 1.0 0.032 1.92 73.46 0.117 11.07 6.54 2 1.7 32.861 3.1461 38.166
4.593 5606.23 24.6 0.687 24.5 4.0 1.73 2.80%Sand-Slime Tailing 0.047 93.3 0.22 0.00 0.22 0 1.70 41.701 579.64 48.48 110 2.82% 2.2 47% 0.80 0.00 0.80 0 0.98 0.07 1.00 1.0 0.057 47.31 95.79 0.136 2.37 0.96 0.40 0.80 0.80 1.31 1.0 0.032 1.66 80.63 0.129 11.78 7.07 2 1.7 41.743 3.9965 48.482
4.757 5606.06 24.5 0.631 24.5 2.1 0.90 2.57%Sand-Slime Tailing 0.047 93.3 0.23 0.00 0.23 0 1.70 41.684 579.41 48.44 106 2.60% 2.2 47% 0.81 0.00 0.81 0 0.98 0.07 1.00 1.0 0.057 47.29 95.73 0.136 2.38 0.96 0.40 0.80 0.80 1.30 1.0 0.033 1.62 78.55 0.125 11.06 6.72 2 1.7 41.706 3.9929 48.439
4.921 5605.90 23.4 0.399 23.4 5.1 2.21 1.71%Sand-Slime Tailing 0.047 93.3 0.24 0.00 0.24 0 1.70 39.712 552.00 46.19 98 1.72% 2.1 47% 0.82 0.00 0.82 0 0.98 0.07 1.00 1.0 0.057 46.50 92.69 0.131 2.30 0.96 0.39 0.80 0.80 1.29 1.0 0.033 1.41 65.26 0.106 9.06 5.68 2 1.7 39.766 3.8072 46.186
5.085 5605.73 25.5 0.327 25.5 7.2 3.11 1.28%Sand-Slime Tailing 0.047 93.3 0.24 0.00 0.24 0 1.70 43.282 601.62 50.36 103 1.29% 2.0 47% 0.83 0.00 0.83 0 0.98 0.07 1.00 1.0 0.057 47.96 98.32 0.140 2.46 0.96 0.41 0.80 0.80 1.29 1.0 0.033 1.27 63.77 0.104 8.64 5.55 2 1.7 43.358 4.1511 50.358
5.249 5605.57 20.3 0.310 20.3 1.4 0.60 1.53%Sand-Slime Tailing 0.047 93.3 0.25 0.00 0.25 0 1.70 34.425 478.51 40.00 79 1.55% 2.1 47% 0.84 0.00 0.84 0 0.98 0.06 1.00 1.0 0.057 44.33 84.33 0.119 2.09 0.96 0.37 0.80 0.80 1.28 1.0 0.033 1.47 58.96 0.099 7.97 5.03 2 1.7 34.44 3.2973 40.000
5.413 5605.41 11.2 0.265 11.2 0.7 0.29 2.37%Slime Tailings 0.041 82.7 0.26 0.00 0.26 0 1.70 19.040 264.66 22.12 42 2.42% 2.4 71% 0.84 0.00 0.84 0 0.98 0.05 1.00 1.0 0.057 37.79 59.91 0.088 1.55 0.96 0.27 0.80 0.80 1.27 1.0 0.033 2.50 55.31 0.096 7.51 4.53 2 1.7 19.047 1.8236 22.122
5.577 5605.24 7.5 0.141 7.5 0.6 0.27 1.88%Slime Tailings 0.057 113.1 0.27 0.00 0.27 1 1.70 12.750 177.23 14.82 27 1.95% 2.5 71% 0.85 0.00 0.85 0 0.98 0.05 1.00 1.0 0.057 35.25 50.06 0.078 1.37 0.96 0.22 0.80 0.80 1.26 1.0 0.034 2.95 43.70 0.086 6.59 3.98 2 1.7 12.757 1.2213 14.816
5.741 5605.08 7.7 0.089 7.7 1.1 0.47 1.15%Sand-Slime Tailing 0.059 119.0 0.28 0.01 0.27 1 1.70 13.090 181.95 15.22 27 1.20% 2.4 47% 0.86 0.00 0.86 0 0.98 0.05 1.00 1.0 0.057 35.64 50.85 0.078 1.39 0.96 0.23 0.80 0.80 1.26 1.0 0.034 2.36 35.90 0.080 5.99 3.69 2 1.7 13.102 1.2543 15.217
5.905 5604.91 9.9 0.084 9.9 2.9 1.27 0.84%Sand-Slime Tailing 0.059 119.0 0.29 0.01 0.28 1 1.70 16.881 234.65 19.64 35 0.87% 2.2 47% 0.87 0.00 0.87 0 0.98 0.05 1.00 1.0 0.056 37.19 56.83 0.084 1.50 0.96 0.26 0.80 0.80 1.26 1.0 0.034 1.79 35.17 0.079 5.85 3.67 2 1.7 16.912 1.6192 19.642
6.069 5604.75 5.9 0.088 5.9 2.9 1.27 1.50%Slime Tailings 0.057 113.1 0.30 0.02 0.28 1 1.70 9.962 138.47 11.61 20 1.58% 2.6 71% 0.88 0.00 0.88 0 0.98 0.05 1.00 1.0 0.056 34.13 45.74 0.074 1.30 0.96 0.20 0.80 0.80 1.25 1.0 0.034 3.28 38.05 0.082 5.94 3.62 2 1.7 9.993 0.9567 11.606
6.234 5604.59 5.6 0.085 5.5 4.4 1.92 1.53%Slime Tailings 0.057 113.1 0.31 0.02 0.28 1 1.70 9.418 130.91 10.99 19 1.62% 2.6 71% 0.89 0.00 0.89 0 0.98 0.05 1.00 1.0 0.056 33.92 44.91 0.073 1.29 0.96 0.19 0.80 0.80 1.25 1.0 0.034 3.48 38.27 0.082 5.86 3.58 2 1.7 9.4649 0.9062 10.993
6.398 5604.42 7.0 0.088 6.9 6.4 2.77 1.26%Slime Tailings 0.057 113.1 0.32 0.03 0.29 1 1.70 11.798 163.99 13.78 23 1.32% 2.5 71% 0.90 0.00 0.90 0 0.97 0.05 1.00 1.0 0.056 34.89 48.67 0.076 1.36 0.96 0.21 0.80 0.80 1.24 1.0 0.034 2.75 37.89 0.082 5.76 3.56 2 1.7 11.866 1.136 13.781
6.562 5604.26 7.1 0.082 7.1 6.8 2.93 1.15%Slime Tailings 0.057 113.1 0.32 0.03 0.29 1 1.70 12.019 167.06 14.04 23 1.21% 2.5 71% 0.91 0.00 0.91 0 0.97 0.05 1.00 1.0 0.056 34.98 49.02 0.077 1.36 0.96 0.22 0.80 0.80 1.24 1.0 0.034 2.64 37.10 0.081 5.63 3.50 2 1.7 12.091 1.1576 14.043
6.726 5604.09 10.7 0.082 10.6 7.0 3.03 0.77%Sand-Slime Tailing 0.059 119.0 0.33 0.04 0.30 1 1.70 18.088 251.42 21.09 35 0.79% 2.2 47% 0.92 0.00 0.92 0 0.97 0.05 1.00 1.0 0.056 37.70 58.79 0.087 1.54 0.96 0.27 0.80 0.80 1.24 1.0 0.034 1.74 36.71 0.081 5.53 3.54 2 1.7 18.162 1.7388 21.094
6.890 5603.93 13.4 0.114 13.4 5.9 2.54 0.85%Sand-Slime Tailing 0.059 119.0 0.34 0.04 0.30 1 1.70 22.746 316.17 26.49 43 0.87% 2.2 47% 0.93 0.00 0.93 0 0.97 0.06 1.00 1.0 0.056 39.59 66.08 0.095 1.70 0.96 0.30 0.80 0.80 1.23 1.0 0.034 1.60 42.25 0.085 5.75 3.73 2 1.7 22.808 2.1837 26.490
7.054 5603.77 15.0 0.134 14.9 5.2 2.24 0.90%Sand-Slime Tailing 0.059 119.0 0.35 0.05 0.31 1 1.70 25.364 352.56 29.52 48 0.92% 2.1 47% 0.94 0.00 0.94 0 0.97 0.06 1.00 1.0 0.056 40.66 70.18 0.100 1.79 0.96 0.31 0.80 0.80 1.23 1.0 0.034 1.55 45.64 0.088 5.86 3.82 2 1.7 25.419 2.4336 29.522
7.218 5603.60 22.4 0.135 22.4 8.0 3.48 0.60%Sand-Slime Tailing 0.059 119.0 0.36 0.05 0.31 1 1.70 38.029 528.60 44.27 71 0.61% 1.9 47% 0.95 0.00 0.95 0 0.97 0.07 0.99 1.0 0.056 45.83 90.09 0.127 2.28 0.96 0.38 0.80 0.80 1.23 1.0 0.034 1.19 52.90 0.094 6.15 4.22 2 1.7 38.114 3.649 44.267
7.382 5603.44 17.5 0.162 17.4 10.4 4.51 0.93%Sand-Slime Tailing 0.059 119.0 0.37 0.06 0.32 1 1.70 29.580 411.16 34.48 54 0.95% 2.1 47% 0.96 0.00 0.96 0 0.97 0.06 0.99 1.0 0.056 42.40 76.88 0.108 1.95 0.96 0.34 0.80 0.80 1.22 1.0 0.035 1.47 50.71 0.092 5.96 3.95 2 1.7 29.69 2.8426 34.484
7.546 5603.27 15.5 0.200 15.4 24.6 10.65 1.29%Sand-Slime Tailing 0.059 119.0 0.38 0.06 0.32 1 1.70 26.112 362.96 30.63 47 1.32% 2.2 47% 0.97 0.00 0.97 0 0.97 0.06 0.99 1.0 0.056 41.04 71.67 0.102 1.83 0.96 0.32 0.80 0.80 1.22 1.0 0.035 1.77 54.31 0.095 6.05 3.94 2 1.7 26.373 2.5249 30.630
7.710 5603.11 17.0 0.227 16.8 44.3 19.18 1.33%Sand-Slime Tailing 0.059 119.0 0.39 0.07 0.32 1 1.70 28.492 396.04 33.64 51 1.36% 2.2 47% 0.98 0.00 0.98 0 0.97 0.06 0.99 1.0 0.055 42.10 75.74 0.107 1.93 0.96 0.33 0.80 0.80 1.22 1.0 0.035 1.72 57.87 0.098 6.16 4.04 2 1.7 28.962 2.7728 33.637
7.874 5602.95 17.9 0.174 17.6 42.1 18.26 0.97%Sand-Slime Tailing 0.059 119.0 0.40 0.07 0.33 1 1.70 29.903 415.65 35.25 53 1.00% 2.1 47% 0.99 0.00 0.99 0 0.96 0.06 0.99 1.0 0.055 42.66 77.91 0.110 1.99 0.96 0.34 0.80 0.80 1.21 1.0 0.035 1.51 53.23 0.094 5.83 3.91 2 1.7 30.35 2.9057 35.250
8.038 5602.78 20.6 0.144 20.4 32.2 13.94 0.70%Sand-Slime Tailing 0.059 119.0 0.41 0.08 0.33 1 1.70 34.680 482.05 40.68 60 0.71% 2.0 47% 1.00 0.00 1.00 0 0.96 0.07 0.99 1.0 0.055 44.57 85.24 0.120 2.17 0.96 0.37 0.80 0.80 1.21 1.0 0.035 1.30 52.92 0.094 5.73 3.95 2 1.7 35.021 3.3529 40.675
8.202 5602.62 26.4 0.168 26.2 32.9 14.27 0.64%Sand-Slime Tailing 0.059 119.0 0.42 0.08 0.34 1 1.70 44.557 619.34 52.16 77 0.65% 1.9 47% 1.01 0.00 1.01 0 0.96 0.07 0.99 1.0 0.055 48.59 100.75 0.144 2.61 0.96 0.42 0.79 0.79 1.21 1.0 0.035 1.18 61.54 0.102 6.13 4.37 2 1.7 44.906 4.2993 52.156
8.366 5602.45 29.9 0.252 29.7 36.5 15.81 0.84%Sand-Slime Tailing 0.059 119.0 0.43 0.09 0.34 1 1.70 50.405 700.63 58.99 86 0.86% 1.9 47% 1.02 0.00 1.02 0 0.96 0.08 0.99 1.0 0.055 50.99 109.98 0.160 2.91 0.96 0.44 0.78 0.78 1.23 1.0 0.034 1.21 71.32 0.114 6.77 4.84 2 1.7 50.792 4.8629 58.992
8.530 5602.29 22.3 0.277 22.1 28.4 12.32 1.24%Sand-Slime Tailing 0.059 119.0 0.44 0.09 0.35 1 1.70 37.621 522.93 44.04 63 1.27% 2.1 47% 1.03 0.00 1.03 0 0.96 0.07 0.99 1.0 0.055 45.75 89.79 0.127 2.31 0.96 0.38 0.80 0.80 1.20 1.0 0.035 1.52 66.73 0.108 6.33 4.32 2 1.7 37.923 3.6307 44.045
8.694 5602.13 21.8 0.392 21.5 41.9 18.15 1.80%Sand-Slime Tailing 0.059 119.0 0.45 0.10 0.35 1 1.70 36.533 507.81 42.95 60 1.84% 2.2 47% 1.04 0.00 1.04 0 0.96 0.07 0.99 1.0 0.055 45.36 88.31 0.124 2.27 0.95 0.38 0.80 0.80 1.20 1.0 0.035 1.79 77.08 0.123 7.11 4.69 2 1.7 36.977 3.5402 42.947
8.858 5601.96 21.4 0.248 21.0 63.0 27.28 1.16%Sand-Slime Tailing 0.059 119.0 0.46 0.10 0.36 1 1.70 35.768 497.18 42.32 59 1.18% 2.1 47% 1.04 0.00 1.04 0 0.96 0.07 0.99 1.0 0.055 45.14 87.46 0.123 2.25 0.95 0.38 0.80 0.80 1.19 1.0 0.035 1.53 64.55 0.105 6.02 4.13 2 1.7 36.436 3.4884 42.318
9.022 5601.80 29.7 0.307 29.5 36.3 15.73 1.03%Sand-Slime Tailing 0.059 119.0 0.47 0.11 0.36 1 1.70 50.044 695.61 58.57 81 1.05% 2.0 47% 1.05 0.00 1.05 0 0.96 0.08 0.98 1.0 0.054 50.84 109.41 0.159 2.91 0.95 0.44 0.78 0.78 1.21 1.0 0.035 1.29 75.74 0.120 6.81 4.86 2 1.6952481 50.428 4.828 58.569
9.186 5601.63 22.6 0.143 22.5 10.6 4.58 0.63%Sand-Slime Tailing 0.059 119.0 0.48 0.11 0.37 1 1.70 38.267 531.91 44.58 60 0.65% 2.0 47% 1.06 0.00 1.06 0 0.96 0.07 0.99 1.0 0.054 45.93 90.51 0.128 2.34 0.95 0.39 0.80 0.80 1.19 1.0 0.035 1.27 56.79 0.097 5.42 3.88 2 1.7 38.379 3.6744 44.575
9.350 5601.47 17.7 0.143 17.7 4.4 1.92 0.81%Sand-Slime Tailing 0.059 119.0 0.49 0.12 0.37 1 1.70 30.039 417.54 34.94 46 0.83% 2.1 47% 1.07 0.00 1.07 0 0.96 0.06 0.99 1.0 0.054 42.56 77.50 0.109 2.01 0.95 0.34 0.80 0.80 1.18 1.0 0.036 1.52 53.08 0.094 5.18 3.60 2 1.7 30.086 2.8804 34.943
9.514 5601.31 14.2 0.178 14.2 4.4 1.90 1.25%Sand-Slime Tailing 0.059 119.0 0.50 0.12 0.38 1 1.70 24.072 334.60 28.01 36 1.30% 2.3 47% 1.08 0.00 1.08 0 0.95 0.06 0.99 1.0 0.054 40.13 68.14 0.097 1.79 0.95 0.31 0.80 0.80 1.18 1.0 0.036 2.04 57.25 0.097 5.32 3.55 2 1.7 24.118 2.3091 28.012
9.678 5601.14 11.7 0.202 11.6 7.4 3.22 1.73%Sand-Slime Tailing 0.059 119.0 0.51 0.13 0.38 1 1.70 19.737 274.34 23.01 29 1.81% 2.5 47% 1.09 0.00 1.09 0 0.95 0.05 0.99 1.0 0.054 38.37 61.39 0.089 1.64 0.95 0.28 0.80 0.80 1.18 1.0 0.036 2.72 62.50 0.103 5.54 3.59 2 1.7 19.816 1.8972 23.015
9.842 5600.98 11.3 0.120 11.2 13.3 5.76 1.07%Sand-Slime Tailing 0.059 119.0 0.52 0.13 0.38 1 1.70 18.989 263.95 22.22 28 1.12% 2.4 47% 1.10 0.00 1.10 0 0.95 0.05 0.99 1.0 0.054 38.09 60.31 0.088 1.62 0.95 0.27 0.80 0.80 1.17 1.0 0.036 2.27 50.41 0.092 4.90 3.26 2 1.7 19.13 1.8315 22.219
10.006 5600.81 14.4 0.083 14.3 11.9 5.15 0.58%Sand-Slime Tailing 0.059 119.0 0.53 0.14 0.39 1 1.70 24.293 337.67 28.36 36 0.60% 2.2 47% 1.11 0.00 1.11 0 0.95 0.06 0.99 1.0 0.054 40.25 68.61 0.098 1.81 0.95 0.31 0.80 0.80 1.17 1.0 0.036 1.58 44.88 0.087 4.60 3.20 2 1.7 24.419 2.3379 28.361
10.170 5600.65 18.3 0.069 18.3 7.0 3.04 0.38%Sand-Slime Tailing 0.059 119.0 0.54 0.15 0.39 1 1.70 31.110 432.43 36.22 45 0.39% 2.0 47% 1.12 0.00 1.12 0 0.95 0.06 0.98 1.0 0.054 43.00 79.22 0.112 2.07 0.95 0.35 0.80 0.80 1.17 1.0 0.036 1.28 46.49 0.089 4.62 3.34 2 1.7 31.185 2.9856 36.219
10.335 5600.49 20.6 0.093 20.6 5.9 2.55 0.45%Sand-Slime Tailing 0.059 119.0 0.55 0.15 0.40 1 1.68 34.682 482.08 40.35 50 0.46% 2.0 47% 1.13 0.00 1.13 0 0.95 0.07 0.98 1.0 0.054 44.45 84.81 0.119 2.22 0.95 0.37 0.80 0.80 1.17 1.0 0.036 1.27 51.31 0.093 4.76 3.49 2 1.6835791 34.744 3.3264 40.353
10.499 5600.32 21.3 0.111 21.3 5.5 2.39 0.52%Sand-Slime Tailing 0.059 119.0 0.56 0.16 0.40 1 1.67 35.475 493.10 41.27 51 0.53% 2.0 47% 1.14 0.00 1.14 0 0.95 0.07 0.98 1.0 0.054 44.78 86.04 0.121 2.25 0.95 0.37 0.80 0.80 1.16 1.0 0.036 1.30 53.52 0.094 4.80 3.53 2 1.6654836 35.532 3.4019 41.268
10.663 5600.16 23.3 0.126 23.3 6.1 2.63 0.54%Sand-Slime Tailing 0.059 119.0 0.57 0.16 0.41 1 1.64 38.112 529.76 44.34 56 0.55% 2.0 47% 1.15 0.00 1.15 0 0.95 0.07 0.98 1.0 0.054 45.85 90.19 0.127 2.37 0.95 0.38 0.80 0.80 1.16 1.0 0.036 1.27 56.24 0.097 4.86 3.62 2 1.6371138 38.174 3.6548 44.337
10.827 5599.99 23.4 0.148 23.4 6.7 2.88 0.63%Sand-Slime Tailing 0.059 119.0 0.58 0.17 0.41 1 1.63 38.033 528.66 44.25 55 0.65% 2.0 47% 1.16 0.00 1.16 0 0.95 0.07 0.98 1.0 0.054 45.82 90.07 0.127 2.37 0.95 0.38 0.80 0.80 1.16 1.0 0.036 1.31 58.18 0.098 4.90 3.63 2 1.6253497 38.101 3.6478 44.252
10.991 5599.83 23.4 0.151 23.3 6.8 2.96 0.65%Sand-Slime Tailing 0.059 119.0 0.59 0.17 0.42 1 1.62 37.699 524.02 43.87 55 0.66% 2.0 47% 1.17 0.00 1.17 0 0.94 0.07 0.98 1.0 0.053 45.69 89.55 0.126 2.36 0.95 0.38 0.80 0.80 1.16 1.0 0.036 1.33 58.30 0.098 4.85 3.61 2 1.6152194 37.768 3.6159 43.865
11.155 5599.67 23.8 0.188 23.7 7.4 3.19 0.79%Sand-Slime Tailing 0.059 119.0 0.60 0.18 0.42 1 1.60 37.995 528.13 44.21 55 0.81% 2.1 47% 1.18 0.00 1.18 0 0.94 0.07 0.98 1.0 0.053 45.81 90.02 0.127 2.38 0.95 0.38 0.80 0.80 1.15 1.0 0.036 1.40 61.77 0.102 4.97 3.67 2 1.6018202 38.069 3.6447 44.214
11.319 5599.50 20.6 0.235 20.6 7.4 3.21 1.14%Sand-Slime Tailing 0.059 119.0 0.61 0.18 0.43 1 1.62 33.296 462.82 38.76 47 1.17% 2.2 47% 1.19 0.00 1.19 0 0.94 0.06 0.98 1.0 0.053 43.89 82.65 0.116 2.18 0.95 0.36 0.80 0.80 1.15 1.0 0.036 1.70 65.83 0.107 5.14 3.66 2 1.6163248 33.371 3.1949 38.758
11.483 5599.34 17.6 0.198 17.5 8.1 3.49 1.13%Sand-Slime Tailing 0.059 119.0 0.62 0.19 0.43 1 1.63 28.640 398.09 33.36 39 1.17% 2.3 47% 1.20 0.00 1.20 0 0.94 0.06 0.98 1.0 0.053 42.00 75.36 0.106 2.00 0.95 0.33 0.80 0.80 1.15 1.0 0.036 1.87 62.34 0.103 4.89 3.45 2 1.632818 28.722 2.7498 33.359
11.647 5599.17 21.4 0.168 21.3 8.2 3.53 0.79%Sand-Slime Tailing 0.059 119.0 0.63 0.19 0.44 1 1.59 33.858 470.62 39.42 48 0.81% 2.1 47% 1.21 0.00 1.21 0 0.94 0.06 0.98 1.0 0.053 44.13 83.54 0.118 2.21 0.95 0.36 0.80 0.80 1.15 1.0 0.036 1.49 58.73 0.099 4.67 3.44 2 1.5895544 33.938 3.2493 39.417
11.811 5599.01 21.3 0.146 21.2 7.4 3.21 0.69%Sand-Slime Tailing 0.059 119.0 0.64 0.20 0.44 1 1.58 33.555 466.42 39.06 47 0.71% 2.1 47% 1.22 0.00 1.22 0 0.94 0.06 0.98 1.0 0.053 44.00 83.06 0.117 2.20 0.95 0.36 0.80 0.80 1.14 1.0 0.037 1.44 56.33 0.097 4.52 3.36 2 1.5798159 33.628 3.2196 39.057
11.975 5598.85 23.0 0.133 23.0 8.9 3.84 0.58%Sand-Slime Tailing 0.059 119.0 0.65 0.20 0.45 1 1.56 35.751 496.95 41.62 50 0.59% 2.0 47% 1.23 0.00 1.23 0 0.94 0.07 0.98 1.0 0.053 44.90 86.52 0.122 2.30 0.95 0.37 0.80 0.80 1.14 1.0 0.037 1.34 55.78 0.096 4.45 3.38 2 1.5571208 35.838 3.4311 41.623
12.139 5598.68 25.0 0.154 24.9 8.9 3.84 0.62%Sand-Slime Tailing 0.059 119.0 0.66 0.21 0.45 1 1.53 38.252 531.70 44.53 54 0.63% 2.0 47% 1.24 0.00 1.24 0 0.94 0.07 0.98 1.0 0.053 45.92 90.44 0.128 2.42 0.95 0.39 0.80 0.80 1.14 1.0 0.037 1.32 58.78 0.099 4.53 3.48 2 1.5343587 38.336 3.6703 44.525
12.303 5598.52 23.3 0.135 23.3 8.9 3.84 0.58%Sand-Slime Tailing 0.059 119.0 0.67 0.21 0.45 1 1.54 35.751 496.94 41.62 50 0.60% 2.0 47% 1.25 0.00 1.25 0 0.94 0.07 0.98 1.0 0.053 44.90 86.52 0.122 2.31 0.95 0.37 0.80 0.80 1.14 1.0 0.037 1.34 55.97 0.096 4.37 3.34 2 1.5357058 35.836 3.4309 41.621
Scaling Factor for stress ration, rm
Volumetric Strain Ratio for Site-Specific Design Earth
Equiv. Number of Uniform Strain Cycles, N
Youd et al. (2001)
CSR
M=7.5,
s'v=1atm
0.15
Earthquake Moment Magnitude, M: 5.5
Magnitude Scaling Factor, MSF:
Equil
Pore
Pressure at time of
Conditions at t1 Liquefaction Triggering Analyses Idriss & Boulanger (2008)Equil
Pore
Pressure
at t1CN qc1 qc1 qc1N
Normalized Cone
Penetration Resistance, Qt
Normalized Friction
Ratio, Fr (%)
Total Stress
at t1 Liquefiable?
1=Yes2=No
Cyclic Stress RatioEffective
Stress at
t1
Saturated
at t1
Idriss & Boulanger (2008)
Idriss and Boulanger (2008)
Max. Horiz. Acceleration, Amax/g:
Earthquake Moment Magnitude, M:
Magnitude Scaling Factor, MSF:
WHITE MESA TAILINGS REPOSITORY LIQUEFACTION AND SEISMIC SETTLEMENT ANALYSES - 3-2C Elev. at
Top of Layer
(ft)
Elev. At Midpoint of Layer
(ft)
Bottom of Layer
(ft)
Thickness of
Layer (ft)
CSR
M=7.5,
s'v=1atm
Kc
High Compaction Layer
Platform/Random Fill Layer
Pw (u2)Pw (u2)
2013 CPT Data from ConeTec CPT Data Interpretations
fs/qt
Material Type (as
determined by fines
Unit Weight Unit Weight
Total
Stress
at time of CPT
Depth
at time of CPT Elevation qt fs qc
Effective
Stress at
time of CPT
Saturated
at time of CPT
Type Index,
Ic FC
Youd, et al (2001)
Max. Horiz. Acceleration, Amax/g:
Stress at
Bottom of Layer
(tsf)
Stress at Midpoint of Layer
(tsf)FINAL COVER
Erosion Protection Layer
Water Storage/Rooting Zone Layer
qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Equil Pore
Pressure at Midpoint of
Layer (tsf)
Unit Weigh
t (tcf)
Unit Weight
(pcf)
Stress at Bottom of Layer
(tsf)
Stress at Midpoint of Layer
(tsf)
qPressure
at Bottom of Layer
(tsf)
Cyclic Resistance Ratio
FoS
Cyclic Stress Ratio
FoS
∆qc1n qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Liquef_SeismicSettle_30Aug2015.xls Page 25 of 36
Energy Fuels Resources (USA) Inc.White Mesa Mill
Liquefaction Analyses
Data File: 13-52106_SP3-2C-BSC-CPT 5605.30 Water surface elevation during CPT investigation (ft a5610.82 Ground Surface Elevation at time of CPT (ft amsl)
Location: White Mesa 2013 CPT Investigation 0.15 5602.54 Water surface elevation at t0 (ft amsl)5621.51 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl)
..\..\..\6.2.3 Field Data\2013 Field Investigation\Conetec Data 5.5 5591.64 Water surface elevation at t1 (ft amsl)0.50 Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after place 5621.51 5621.26 5621.01 0.50 0.055 110 0.028 0.014 0.00 0.00 0.028 0.014
Tailings Sands 1.69 5586.64 Water surface elevation at t2 (ft amsl)3.50 Thickness of Water Storage/Rooting Zone (ft)5621.01 5619.26 5617.51 3.50 0.054 107 0.215 0.121 0.00 0.00 0.215 0.121
Tailings Sand-Slimes 3.50 Thickness of High Compaction Layer (ft)5617.51 5615.76 5614.01 3.50 0.060 120 0.424 0.320 0.00 0.00 0.424 0.320
Tailings Slimes 1.44 3.19 Thickness of Random/Platform Fill on on top of existing interim cover (ft) 5614.01 5612.415 5610.82 3.19 0.050 101 0.585 0.504 0.00 0.00 0.585 0.504
Interim Cover 0.47 1167.12 Additional Stress due to Final Cover Placement, ΔσFC (psf)
Cells Requiring User Input/Manipulation 2.21 2.21 7.51 5586.64 Elevation of bottom of tailings (liner) (ft amsl)
rd Cσ Kσ Ka rd Dr ffKσ Ka Avg CN qc1 qc1 qc1N
(ft) (ft amsl) TSF TSF TSF (ft) PSI (%) (tcf) (pcf) (tsf)(tsf)(tsf) 1=Yes TSF MPa % (tsf)(tsf)(tsf) 1=Yes FoS TSF MPa
0=No 0=No
Scaling Factor for stress ration, rm
Volumetric Strain Ratio for Site-Specific Design Earth
Equiv. Number of Uniform Strain Cycles, N
Youd et al. (2001)
CSR
M=7.5,
s'v=1atm
0.15
Earthquake Moment Magnitude, M: 5.5
Magnitude Scaling Factor, MSF:
Equil
Pore
Pressure at time of
Conditions at t1 Liquefaction Triggering Analyses Idriss & Boulanger (2008)Equil
Pore
Pressure
at t1CN qc1 qc1 qc1N
Normalized Cone
Penetration Resistance, Qt
Normalized Friction
Ratio, Fr (%)
Total Stress
at t1 Liquefiable?
1=Yes2=No
Cyclic Stress RatioEffective
Stress at
t1
Saturated
at t1
Idriss & Boulanger (2008)
Idriss and Boulanger (2008)
Max. Horiz. Acceleration, Amax/g:
Earthquake Moment Magnitude, M:
Magnitude Scaling Factor, MSF:
WHITE MESA TAILINGS REPOSITORY LIQUEFACTION AND SEISMIC SETTLEMENT ANALYSES - 3-2C Elev. at
Top of Layer
(ft)
Elev. At Midpoint of Layer
(ft)
Bottom of Layer
(ft)
Thickness of
Layer (ft)
CSR
M=7.5,
s'v=1atm
Kc
High Compaction Layer
Platform/Random Fill Layer
Pw (u2)Pw (u2)
2013 CPT Data from ConeTec CPT Data Interpretations
fs/qt
Material Type (as
determined by fines
Unit Weight Unit Weight
Total
Stress
at time of CPT
Depth
at time of CPT Elevation qt fs qc
Effective
Stress at
time of CPT
Saturated
at time of CPT
Type Index,
Ic FC
Youd, et al (2001)
Max. Horiz. Acceleration, Amax/g:
Stress at
Bottom of Layer
(tsf)
Stress at Midpoint of Layer
(tsf)FINAL COVER
Erosion Protection Layer
Water Storage/Rooting Zone Layer
qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Equil Pore
Pressure at Midpoint of
Layer (tsf)
Unit Weigh
t (tcf)
Unit Weight
(pcf)
Stress at Bottom of Layer
(tsf)
Stress at Midpoint of Layer
(tsf)
qPressure
at Bottom of Layer
(tsf)
Cyclic Resistance Ratio
FoS
Cyclic Stress Ratio
FoS
∆qc1n qc1n-cs
(CRR)
M=7.5,
s'v=1atm
12.467 5598.35 19.3 0.160 19.2 8.9 3.87 0.83%Sand-Slime Tailing 0.059 119.0 0.68 0.22 0.46 1 1.56 29.859 415.03 34.78 40 0.86% 2.2 47% 1.26 0.00 1.26 0 0.93 0.06 0.98 1.0 0.053 42.50 77.28 0.109 2.07 0.95 0.34 0.80 0.80 1.13 1.0 0.037 1.65 57.30 0.097 4.38 3.22 2 1.5551349 29.945 2.867 34.780
12.631 5598.19 20.3 0.143 20.3 8.0 3.47 0.70%Sand-Slime Tailing 0.059 119.0 0.69 0.22 0.46 1 1.54 31.205 433.74 36.33 42 0.73% 2.1 47% 1.27 0.00 1.27 0 0.93 0.06 0.98 1.0 0.053 43.04 79.37 0.112 2.12 0.95 0.35 0.80 0.80 1.13 1.0 0.037 1.53 55.42 0.096 4.27 3.20 2 1.5371723 31.281 2.9949 36.331
12.795 5598.02 20.0 0.132 19.9 7.5 3.24 0.66%Sand-Slime Tailing 0.059 119.0 0.70 0.23 0.47 1 1.53 30.469 423.52 35.47 41 0.69% 2.1 47% 1.28 0.00 1.28 0 0.93 0.06 0.98 1.0 0.053 42.74 78.21 0.110 2.10 0.95 0.34 0.80 0.80 1.13 1.0 0.037 1.52 54.00 0.095 4.17 3.14 2 1.5303446 30.541 2.924 35.471
12.959 5597.86 21.7 0.151 21.6 9.5 4.12 0.70%Sand-Slime Tailing 0.059 119.0 0.71 0.23 0.47 1 1.51 32.643 453.73 38.02 44 0.72% 2.1 47% 1.29 0.00 1.29 0 0.93 0.06 0.97 1.0 0.052 43.63 81.65 0.115 2.19 0.94 0.36 0.80 0.80 1.13 1.0 0.037 1.49 56.54 0.097 4.23 3.21 2 1.5091412 32.732 3.1338 38.017
13.123 5597.70 20.7 0.179 20.6 8.8 3.79 0.87%Sand-Slime Tailing 0.059 119.0 0.72 0.24 0.48 1 1.51 31.051 431.61 36.16 42 0.90% 2.2 47% 1.30 0.00 1.30 0 0.93 0.06 0.97 1.0 0.052 42.98 79.14 0.111 2.13 0.94 0.35 0.80 0.80 1.13 1.0 0.037 1.64 59.39 0.099 4.31 3.22 2 1.5066131 31.134 2.9807 36.160
13.287 5597.53 20.4 0.271 20.3 9.5 4.12 1.33%Sand-Slime Tailing 0.059 119.0 0.72 0.24 0.48 1 1.50 30.438 423.09 35.45 41 1.38% 2.3 47% 1.31 0.00 1.31 0 0.93 0.06 0.97 1.0 0.052 42.74 78.19 0.110 2.11 0.94 0.34 0.80 0.80 1.12 1.0 0.037 1.96 69.60 0.111 4.77 3.44 2 1.4994011 30.527 2.9226 35.455
13.451 5597.37 17.5 0.436 17.4 12.5 5.40 2.49%Sand-Slime Tailing 0.059 119.0 0.73 0.25 0.49 1 1.51 26.315 365.78 30.70 34 2.60% 2.5 47% 1.32 0.00 1.32 0 0.93 0.06 0.97 1.0 0.052 41.07 71.77 0.102 1.95 0.94 0.32 0.80 0.80 1.12 1.0 0.037 2.93 90.06 0.148 6.28 4.12 2 1.5097542 26.432 2.5306 30.700
13.615 5597.20 16.3 0.451 16.2 16.3 7.05 2.77%Slime Tailings 0.057 113.1 0.74 0.25 0.49 1 1.51 24.409 339.29 28.53 32 2.91% 2.6 71% 1.33 0.00 1.33 0 0.93 0.06 0.97 1.0 0.052 40.02 68.55 0.098 1.88 0.94 0.31 0.80 0.80 1.12 1.0 0.037 3.28 93.45 0.156 6.57 4.22 2 1.5104631 24.562 2.3516 28.528
13.779 5597.04 20.4 0.353 20.2 19.3 8.35 1.73%Sand-Slime Tailing 0.059 119.0 0.75 0.26 0.50 1 1.47 29.819 414.48 34.84 40 1.80% 2.4 47% 1.34 0.00 1.34 0 0.92 0.06 0.97 1.0 0.052 42.52 77.36 0.109 2.10 0.94 0.34 0.80 0.80 1.12 1.0 0.037 2.25 78.36 0.125 5.21 3.65 2 1.4732613 29.996 2.8718 34.838
13.943 5596.88 25.7 0.379 25.6 13.1 5.68 1.48%Sand-Slime Tailing 0.059 119.0 0.76 0.26 0.50 1 1.44 36.753 510.87 42.82 50 1.52% 2.3 47% 1.35 0.00 1.35 0 0.92 0.07 0.97 1.0 0.052 45.32 88.14 0.124 2.40 0.94 0.38 0.80 0.80 1.11 1.0 0.037 1.83 78.27 0.125 5.16 3.78 2 1.4356655 36.871 3.53 42.823
14.107 5596.71 19.0 0.491 19.0 7.7 3.35 2.58%Sand-Slime Tailing 0.059 119.0 0.77 0.27 0.51 1 1.46 27.769 385.99 32.33 36 2.69% 2.5 47% 1.36 0.00 1.36 0 0.92 0.06 0.97 1.0 0.052 41.64 73.98 0.105 2.02 0.94 0.33 0.80 0.80 1.11 1.0 0.037 2.90 93.82 0.157 6.43 4.23 2 1.4638491 27.84 2.6654 32.334
14.271 5596.55 14.6 0.427 14.6 5.8 2.51 2.92%Slime Tailings 0.057 113.1 0.78 0.27 0.51 1 1.49 21.650 300.93 25.21 27 3.09% 2.7 71% 1.37 0.00 1.37 0 0.92 0.06 0.97 1.0 0.052 38.87 64.07 0.092 1.78 0.94 0.29 0.80 0.80 1.11 1.0 0.037 3.71 93.46 0.156 6.35 4.07 2 1.4859142 21.703 2.0779 25.207
14.436 5596.38 9.2 0.378 9.2 7.3 3.14 4.11%Slime Tailings 0.057 113.1 0.79 0.28 0.51 1 1.50 13.706 190.52 16.00 16 4.50% 2.9 71% 1.38 0.00 1.38 0 0.92 0.05 0.98 1.0 0.052 35.66 51.66 0.079 1.52 0.94 0.23 0.80 0.80 1.11 1.0 0.037 6.02 96.32 0.163 6.59 4.06 2 1.4979452 13.774 1.3187 15.998
14.600 5596.22 10.5 0.412 10.2 45.5 19.71 3.91%Slime Tailings 0.057 113.1 0.80 0.28 0.52 1 1.49 15.242 211.87 18.19 19 4.24% 2.9 71% 1.38 0.00 1.38 0 0.92 0.05 0.98 1.0 0.052 36.42 54.62 0.082 1.59 0.94 0.25 0.80 0.80 1.11 1.0 0.037 5.41 98.39 0.169 6.76 4.17 2 1.4885243 15.665 1.4998 18.194
14.764 5596.06 12.3 0.360 12.1 42.1 18.25 2.92%Slime Tailings 0.057 113.1 0.81 0.29 0.52 1 1.48 17.857 248.22 21.19 22 3.12% 2.7 71% 1.39 0.00 1.39 0 0.92 0.05 0.97 1.0 0.052 37.47 58.66 0.086 1.67 0.94 0.27 0.80 0.80 1.11 1.0 0.038 4.23 89.55 0.147 5.84 3.76 2 1.4782492 18.246 1.7469 21.191
14.928 5595.89 11.4 0.381 11.1 52.4 22.72 3.35%Slime Tailings 0.057 113.1 0.82 0.29 0.53 1 1.47 16.259 226.00 19.44 20 3.61% 2.8 71% 1.40 0.00 1.40 0 0.92 0.05 0.97 1.0 0.052 36.86 56.30 0.084 1.63 0.94 0.25 0.80 0.80 1.10 1.0 0.038 4.80 93.41 0.156 6.15 3.89 2 1.4700815 16.74 1.6027 19.443
15.092 5595.73 10.8 0.299 10.3 74.3 32.20 2.78%Slime Tailings 0.057 113.1 0.83 0.30 0.53 1 1.46 15.049 209.18 18.27 19 3.01% 2.8 71% 1.41 0.00 1.41 0 0.91 0.05 0.97 1.0 0.052 36.45 54.71 0.082 1.60 0.94 0.25 0.80 0.80 1.10 1.0 0.038 4.59 83.90 0.135 5.29 3.44 2 1.4610537 15.727 1.5057 18.266
15.256 5595.56 19.3 0.291 19.3 9.6 4.14 1.50%Sand-Slime Tailing 0.059 119.0 0.84 0.30 0.53 1 1.41 27.158 377.49 31.64 35 1.57% 2.4 47% 1.42 0.00 1.42 0 0.91 0.06 0.97 1.0 0.051 41.40 73.04 0.103 2.02 0.94 0.32 0.80 0.80 1.10 1.0 0.038 2.29 72.47 0.115 4.49 3.25 2 1.4078566 27.241 2.6081 31.639
15.420 5595.40 21.0 0.161 20.9 6.0 2.61 0.77%Sand-Slime Tailing 0.059 119.0 0.85 0.31 0.54 1 1.39 29.142 405.07 33.91 37 0.80% 2.2 47% 1.43 0.00 1.43 0 0.91 0.06 0.97 1.0 0.051 42.19 76.10 0.107 2.10 0.94 0.34 0.80 0.80 1.10 1.0 0.038 1.68 56.97 0.097 3.75 2.92 2 1.3916875 29.194 2.7951 33.907
15.584 5595.24 22.2 0.159 22.2 3.5 1.51 0.72%Sand-Slime Tailing 0.059 119.0 0.86 0.31 0.54 1 1.38 30.532 424.40 35.50 39 0.75% 2.2 47% 1.44 0.00 1.44 0 0.91 0.06 0.97 1.0 0.051 42.75 78.25 0.110 2.16 0.94 0.34 0.80 0.80 1.10 1.0 0.038 1.60 56.82 0.097 3.71 2.94 2 1.3784218 30.562 2.926 35.496
15.748 5595.07 20.4 0.160 20.4 2.7 1.19 0.78%Sand-Slime Tailing 0.059 119.0 0.87 0.32 0.55 1 1.38 28.088 390.43 32.65 36 0.82% 2.2 47% 1.45 0.00 1.45 0 0.91 0.06 0.97 1.0 0.051 41.75 74.40 0.105 2.07 0.94 0.33 0.80 0.80 1.09 1.0 0.038 1.74 56.81 0.097 3.68 2.87 2 1.3788977 28.112 2.6914 32.650
15.912 5594.91 19.5 0.171 19.4 8.7 3.77 0.88%Sand-Slime Tailing 0.059 119.0 0.88 0.32 0.55 1 1.38 26.698 371.11 31.10 34 0.92% 2.3 47% 1.46 0.00 1.46 0 0.91 0.06 0.97 1.0 0.051 41.21 72.30 0.102 2.02 0.94 0.32 0.80 0.80 1.09 1.0 0.038 1.87 58.26 0.098 3.70 2.86 2 1.3754991 26.773 2.5633 31.095
16.076 5594.74 19.6 0.146 19.5 14.0 6.06 0.74%Sand-Slime Tailing 0.059 119.0 0.89 0.33 0.56 1 1.37 26.712 371.29 31.16 34 0.78% 2.2 47% 1.47 0.00 1.47 0 0.91 0.06 0.97 1.0 0.051 41.23 72.39 0.103 2.02 0.94 0.32 0.80 0.80 1.09 1.0 0.038 1.77 55.11 0.096 3.57 2.79 2 1.3670323 26.831 2.5688 31.163
16.240 5594.58 22.3 0.122 22.2 15.7 6.79 0.55%Sand-Slime Tailing 0.059 119.0 0.90 0.33 0.56 1 1.35 29.952 416.34 34.94 38 0.57% 2.1 47% 1.48 0.00 1.48 0 0.91 0.06 0.97 1.0 0.051 42.56 77.50 0.109 2.16 0.94 0.34 0.80 0.80 1.09 1.0 0.038 1.50 52.57 0.094 3.46 2.81 2 1.3479919 30.084 2.8803 34.941
16.404 5594.42 25.7 0.298 25.6 17.8 7.69 1.16%Sand-Slime Tailing 0.059 119.0 0.91 0.34 0.57 1 1.33 34.002 472.62 39.66 44 1.20% 2.2 47% 1.49 0.00 1.49 0 0.90 0.06 0.96 1.0 0.050 44.21 83.87 0.118 2.34 0.94 0.36 0.80 0.80 1.09 1.0 0.038 1.78 70.65 0.113 4.15 3.24 2 1.3281917 34.149 3.2694 39.662
16.568 5594.25 18.5 0.396 18.4 22.8 9.87 2.14%Sand-Slime Tailing 0.059 119.0 0.92 0.34 0.57 1 1.35 24.813 344.89 29.04 31 2.25% 2.5 47% 1.50 0.00 1.50 0 0.90 0.06 0.97 1.0 0.051 40.49 69.53 0.099 1.96 0.94 0.31 0.80 0.80 1.09 1.0 0.038 2.92 84.80 0.137 4.99 3.47 2 1.3492412 25.004 2.3939 29.041
16.732 5594.09 15.3 0.462 15.1 35.8 15.50 3.02%Slime Tailings 0.057 113.1 0.93 0.35 0.58 1 1.36 20.475 284.61 24.13 25 3.21% 2.7 71% 1.51 0.00 1.51 0 0.90 0.06 0.97 1.0 0.051 38.49 62.62 0.091 1.80 0.94 0.28 0.80 0.80 1.08 1.0 0.038 3.98 96.07 0.162 5.88 3.84 2 1.3577821 20.779 1.9893 24.133
16.896 5593.92 15.4 0.350 14.9 88.5 38.34 2.27%Sand-Slime Tailing 0.059 119.0 0.94 0.35 0.58 1 1.35 20.091 279.26 24.20 25 2.41% 2.6 47% 1.52 0.00 1.52 0 0.90 0.06 0.97 1.0 0.050 38.79 62.99 0.091 1.81 0.94 0.28 0.80 0.80 1.08 1.0 0.038 3.45 83.47 0.134 4.82 3.31 2 1.3492937 20.836 1.9949 24.200
17.060 5593.76 26.3 0.276 25.8 72.4 31.36 1.05%Sand-Slime Tailing 0.059 119.0 0.95 0.36 0.59 1 1.30 33.545 466.27 39.64 43 1.09% 2.2 47% 1.53 0.00 1.53 0 0.90 0.06 0.96 1.0 0.050 44.20 83.85 0.118 2.36 0.94 0.36 0.80 0.80 1.08 1.0 0.038 1.73 68.48 0.110 3.92 3.14 2 1.3001914 34.132 3.2678 39.643
17.224 5593.60 20.8 0.402 20.7 18.6 8.07 1.93%Sand-Slime Tailing 0.059 119.0 0.96 0.37 0.59 1 1.31 27.153 377.43 31.71 34 2.02% 2.5 47% 1.54 0.00 1.54 0 0.90 0.06 0.97 1.0 0.050 41.42 73.14 0.104 2.07 0.93 0.33 0.80 0.80 1.08 1.0 0.038 2.62 83.22 0.134 4.73 3.40 2 1.3117576 27.306 2.6143 31.714
17.388 5593.43 15.3 0.334 15.2 21.0 9.11 2.19%Sand-Slime Tailing 0.059 119.0 0.96 0.37 0.59 1 1.33 20.107 279.49 23.56 24 2.33% 2.6 47% 1.55 0.00 1.55 0 0.90 0.05 0.97 1.0 0.050 38.56 62.12 0.090 1.80 0.93 0.28 0.80 0.80 1.08 1.0 0.038 3.47 81.83 0.131 4.60 3.20 2 1.3272144 20.281 1.9417 23.556
17.552 5593.27 16.5 0.162 16.3 36.5 15.82 0.98%Sand-Slime Tailing 0.059 119.0 0.97 0.38 0.60 1 1.31 21.424 297.79 25.23 26 1.04% 2.4 47% 1.56 0.00 1.56 0 0.90 0.06 0.97 1.0 0.050 39.15 64.38 0.093 1.85 0.93 0.29 0.80 0.80 1.08 1.0 0.038 2.31 58.30 0.098 3.43 2.64 2 1.314342 21.723 2.0798 25.230
17.716 5593.10 24.5 0.248 24.3 32.1 13.91 1.01%Sand-Slime Tailing 0.059 119.0 0.98 0.38 0.60 1 1.28 31.128 432.68 36.45 39 1.05% 2.3 47% 1.57 0.00 1.57 0 0.89 0.06 0.96 1.0 0.050 43.09 79.54 0.112 2.25 0.93 0.35 0.80 0.80 1.07 1.0 0.038 1.81 65.83 0.107 3.69 2.97 2 1.2794019 31.384 3.0047 36.451
17.880 5592.94 17.1 0.328 16.9 29.7 12.85 1.92%Sand-Slime Tailing 0.059 119.0 0.99 0.39 0.61 1 1.30 21.982 305.54 25.81 27 2.03% 2.6 47% 1.58 0.00 1.58 0 0.89 0.06 0.97 1.0 0.050 39.35 65.16 0.094 1.88 0.93 0.29 0.80 0.80 1.07 1.0 0.038 3.06 78.92 0.126 4.32 3.10 2 1.2976165 22.222 2.1275 25.809
18.044 5592.78 15.0 0.452 14.8 43.2 18.70 3.01%Slime Tailings 0.057 113.1 1.00 0.39 0.61 1 1.30 19.195 266.82 22.70 23 3.22% 2.7 71% 1.59 0.00 1.59 0 0.89 0.05 0.97 1.0 0.050 37.99 60.69 0.089 1.78 0.93 0.28 0.80 0.80 1.07 1.0 0.038 4.20 95.31 0.161 5.48 3.63 2 1.2996199 19.546 1.8713 22.701
18.208 5592.61 12.2 0.284 11.8 60.5 26.21 2.32%Slime Tailings 0.057 113.1 1.01 0.40 0.62 1 1.30 15.367 213.60 18.42 18 2.53% 2.7 71% 1.60 0.00 1.60 0 0.89 0.05 0.97 1.0 0.050 36.50 54.92 0.082 1.65 0.93 0.25 0.80 0.80 1.07 1.0 0.038 4.32 79.57 0.127 4.31 2.98 2 1.297855 15.857 1.5181 18.417
18.372 5592.45 20.9 0.383 20.4 78.0 33.81 1.83%Sand-Slime Tailing 0.059 119.0 1.02 0.40 0.62 1 1.27 25.871 359.60 30.76 32 1.92% 2.5 47% 1.61 0.00 1.61 0 0.89 0.06 0.96 1.0 0.050 41.09 71.85 0.102 2.06 0.93 0.32 0.80 0.80 1.07 1.0 0.039 2.64 81.26 0.130 4.38 3.22 2 1.2656973 26.487 2.5359 30.764
18.537 5592.28 18.1 0.296 17.9 41.0 17.77 1.63%Sand-Slime Tailing 0.059 119.0 1.03 0.41 0.63 1 1.27 22.684 315.30 26.72 27 1.73% 2.5 47% 1.62 0.00 1.62 0 0.89 0.06 0.96 1.0 0.049 39.67 66.40 0.095 1.92 0.93 0.30 0.80 0.80 1.07 1.0 0.039 2.78 74.25 0.118 3.95 2.94 2 1.2679476 23.008 2.2028 26.723
18.701 5592.12 21.8 0.387 21.4 62.7 27.18 1.78%Sand-Slime Tailing 0.059 119.0 1.04 0.41 0.63 1 1.25 26.759 371.95 31.65 33 1.87% 2.5 47% 1.63 0.00 1.63 0 0.89 0.06 0.96 1.0 0.049 41.40 73.05 0.103 2.10 0.93 0.32 0.80 0.80 1.06 1.0 0.039 2.56 81.00 0.129 4.30 3.20 2 1.2504122 27.248 2.6088 31.647
18.865 5591.96 18.8 0.412 18.5 46.5 20.15 2.19%Sand-Slime Tailing 0.059 119.0 1.05 0.42 0.64 1 1.25 23.212 322.65 27.38 28 2.32% 2.6 47% 1.64 0.00 1.64 0 0.89 0.06 0.96 1.0 0.049 39.90 67.29 0.096 1.95 0.93 0.30 0.80 0.80 1.06 1.0 0.039 3.15 86.26 0.140 4.61 3.28 2 1.2526649 23.576 2.2571 27.382
19.029 5591.79 18.5 0.428 18.4 22.2 9.62 2.31%Sand-Slime Tailing 0.059 119.0 1.06 0.42 0.64 1 1.25 22.958 319.11 26.86 27 2.45% 2.6 47% 1.65 0.00 1.65 0 0.88 0.06 0.96 1.0 0.049 39.72 66.59 0.095 1.94 0.93 0.30 0.80 0.80 1.06 1.0 0.039 3.28 88.21 0.144 4.72 3.33 2 1.2470318 23.131 2.2145 26.865
19.193 5591.63 13.1 0.382 12.9 32.2 13.96 2.91%Slime Tailings 0.057 113.1 1.07 0.43 0.64 1 1.25 16.221 225.48 19.13 19 3.17% 2.8 71% 1.65 0.00 1.65 1 0.88 0.05 0.97 1.0 0.049 36.75 55.88 0.083 1.69 0.93 0.25 0.80 0.80 1.06 1.0 0.039 4.71 90.11 0.148 4.82 3.26 2 1.2545588 16.474 1.5772 19.133
19.357 5591.46 11.8 0.318 11.1 110.7 47.96 2.70%Slime Tailings 0.057 113.1 1.08 0.43 0.65 1 1.25 13.843 192.42 17.08 17 2.97% 2.8 71% 1.66 0.01 1.66 1 0.88 0.05 0.97 1.0 0.049 36.04 53.12 0.081 1.63 0.93 0.24 0.80 0.80 1.06 1.0 0.039 4.94 84.32 0.136 4.38 3.01 2 1.2482606 14.706 1.4079 17.080
19.521 5591.30 14.0 0.235 13.6 73.8 31.99 1.67%Sand-Slime Tailing 0.059 119.0 1.09 0.44 0.65 1 1.24 16.857 234.31 20.24 20 1.81% 2.6 47% 1.67 0.01 1.66 1 0.88 0.05 0.97 1.0 0.049 37.40 57.64 0.085 1.73 0.93 0.26 0.80 0.80 1.06 1.0 0.039 3.50 70.92 0.113 3.62 2.67 2 1.2413212 17.429 1.6687 20.243
19.685 5591.14 14.0 0.240 13.3 116.1 50.29 1.72%Sand-Slime Tailing 0.059 119.0 1.10 0.44 0.66 1 1.23 16.369 227.53 20.05 20 1.86% 2.6 47% 1.68 0.02 1.67 1 0.88 0.05 0.97 1.0 0.050 37.33 57.38 0.085 1.72 0.93 0.26 0.80 0.80 1.06 1.0 0.039 3.57 71.65 0.114 3.62 2.67 2 1.2344691 17.263 1.6528 20.050
19.849 5590.97 13.0 0.220 12.4 100.8 43.68 1.69%Sand-Slime Tailing 0.059 119.0 1.11 0.45 0.66 1 1.23 15.187 211.09 18.54 18 1.85% 2.7 47% 1.69 0.02 1.67 1 0.88 0.05 0.97 1.0 0.050 36.80 55.34 0.083 1.67 0.93 0.25 0.80 0.80 1.05 1.0 0.039 3.77 69.95 0.112 3.52 2.59 2 1.2277026 15.959 1.5279 18.536
20.013 5590.81 12.6 0.337 11.7 147.5 63.92 2.68%Slime Tailings 0.057 113.1 1.12 0.45 0.67 1 1.22 14.257 198.18 17.87 17 2.94% 2.8 71% 1.70 0.03 1.68 1 0.88 0.05 0.97 1.0 0.050 36.31 54.17 0.082 1.64 0.92 0.24 0.80 0.80 1.05 1.0 0.039 4.79 85.49 0.138 4.31 2.98 2 1.2217066 15.382 1.4727 17.866
20.177 5590.64 16.5 0.337 15.6 147.0 63.70 2.05%Sand-Slime Tailing 0.059 119.0 1.13 0.46 0.67 1 1.21 18.838 261.85 23.17 23 2.20% 2.6 47% 1.71 0.03 1.68 1 0.87 0.05 0.96 1.0 0.050 38.43 61.60 0.090 1.81 0.92 0.28 0.80 0.80 1.05 1.0 0.039 3.49 80.79 0.129 4.00 2.90 2 1.2106766 19.949 1.9099 23.170
20.341 5590.48 20.1 0.337 19.5 94.3 40.85 1.68%Sand-Slime Tailing 0.059 119.0 1.14 0.46 0.68 1 1.20 23.344 324.48 27.93 28 1.78% 2.5 47% 1.72 0.04 1.69 1 0.87 0.06 0.96 1.0 0.050 40.10 68.03 0.097 1.96 0.92 0.31 0.80 0.80 1.05 1.0 0.040 2.77 77.23 0.123 3.77 2.87 2 1.1958988 24.048 2.3023 27.930
Liquef_SeismicSettle_30Aug2015.xls Page 26 of 36
Energy Fuels Resources (USA) Inc.
White Mesa MillLiquefaction Analyses
Data File: 13-52106_SP3-3S-BSC-CPT 5605.60 Water surface elevation during CPT investigation (ft5609.63 Ground Surface Elevation at time of CPT (ft amsl)Location: White Mesa 2013 CPT Investigation 0.15 5601.35 Water surface elevation at t0 (ft amsl)5620.49 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl)
..\..\..\6.2.3 Field Data\2013 Field Investigation\Conetec Data 5.5 5582.14 Water surface elevation at t1 (ft amsl) 0.50 Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after pla ###### 5620.24 5619.99 0.50 0.055 110 0.028 0.014 0.00 0.00 0.028 0.014
Tailings Sands 1.69 5577.14 Water surface elevation at t2 (ft amsl)3.50 Thickness of Water Storage/Rooting Zone (ft) ###### 5618.24 5616.49 3.50 0.054 107 0.215 0.121 0.00 0.00 0.215 0.121
Tailings Sand-Slimes 3.50 Thickness of High Compaction Layer (ft)###### 5614.74 5612.99 3.50 0.060 120 0.424 0.320 0.00 0.00 0.424 0.320
Tailings Slimes 1.44 3.36 Thickness of Random/Platform Fill on on top of existing interim cover (ft) ###### 5611.31 5609.63 3.36 0.050 101 0.593 0.509 0.00 0.00 0.593 0.509
Interim Cover 0.47 1184.24 Additional Stress due to Final Cover Placement, ΔσFC (psf)
Cells Requiring User Input/Manipulation 2.21 2.21 7.51 5577.14 Elevation of bottom of tailings (liner) (ft amsl)
rd Cσ Kσ Ka rd Dr f Kσ Ka Avg CN qc1 qc1 qc1N
(ft) (ft amsl) TSF TSF TSF (ft) PSI (%) (tcf) (pcf) (tsf)(tsf)(tsf) 1=Yes TSF MPa % (tsf)(tsf)(tsf) 1=Yes FoS TSF MPa
0=No 0=No
0.164 5609.47 13.9 0.034 13.9 1.5 0.64 0.25%Interim Cover 0.050 100.7 0.01 0.00 0.01 0 1.70 23.545 327.28 27.36 1677 0.25% 0.7 51% 0.60 0.00 0.60 0 1.00 0.06 1.02 1.0 0.059 39.92 67.29 0.096 1.63 0.97 0.30 0.80 2.53 1.0 0.017 1.00 27.36 0.073 176.61 89.12 2 1.7 23.561 2.2557 27.364
0.328 5609.30 18.4 0.072 18.4 2.3 1.01 0.39%Interim Cover 0.050 100.7 0.02 0.00 0.02 0 1.70 31.246 434.32 36.32 1112 0.39% 0.9 51% 0.61 0.00 0.61 0 1.00 0.06 1.02 1.0 0.059 43.07 79.38 0.112 1.89 0.97 0.35 0.80 2.20 1.0 0.019 1.00 36.32 0.080 97.39 49.64 2 1.7 31.271 2.9938 36.319
0.492 5609.14 58.6 0.077 58.5 4.8 2.06 0.13%Interim Cover 0.050 100.7 0.02 0.00 0.02 0 1.70 99.501 1383.06 115.62 2362 0.13% 0.4 51% 0.62 0.00 0.62 0 1.00 0.12 1.04 1.0 0.060 70.90 186.52 0.662 11.01 0.97 0.62 0.69 3.01 1.0 0.014 1.00 115.62 0.224 181.10 96.05 2 1.7 99.552 9.5311 115.623
0.656 5608.97 73.3 0.296 73.3 3.9 1.68 0.40%Interim Cover 0.050 100.7 0.03 0.00 0.03 0 1.70 124.644 1732.55 144.81 2218 0.40% 0.8 51% 0.63 0.00 0.63 0 1.00 0.15 1.05 1.0 0.061 81.14 225.95 1.000 16.49 0.97 0.69 0.65 3.10 1.0 0.014 1.00 144.81 0.362 220.09 118.29 2 1.7 124.69 11.937 144.814
0.820 5608.81 81.4 0.267 81.4 3.7 1.62 0.33%Interim Cover 0.050 100.7 0.04 0.00 0.04 0 1.70 138.414 1923.95 160.81 1971 0.33% 0.8 51% 0.63 0.00 0.63 0 1.00 0.18 1.05 1.0 0.061 86.75 247.56 1.000 16.41 0.97 0.73 0.63 3.04 1.0 0.014 1.00 160.81 1.000 486.00 251.21 2 1.7 138.45 13.256 160.805
0.984 5608.65 84.2 0.326 84.2 3.9 1.68 0.39%Interim Cover 0.050 100.7 0.05 0.00 0.05 0 1.70 143.072 1988.70 166.22 1697 0.39% 0.8 51% 0.64 0.00 0.64 0 1.00 0.19 1.05 1.0 0.061 88.65 254.87 1.000 16.41 0.97 0.74 0.63 2.89 1.0 0.015 1.00 166.22 1.000 405.16 210.78 2 1.7 143.11 13.702 166.217
1.148 5608.48 84.7 0.187 84.7 2.9 1.27 0.22%Interim Cover 0.050 100.7 0.06 0.00 0.06 0 1.70 143.939 2000.75 167.21 1463 0.22% 0.6 51% 0.65 0.00 0.65 0 1.00 0.19 1.05 1.0 0.061 89.00 256.21 1.000 16.43 0.97 0.75 0.63 2.74 1.0 0.016 1.00 167.21 1.000 347.42 181.93 2 1.7 143.97 13.784 167.213
1.312 5608.32 73.0 0.231 72.9 3.0 1.31 0.32%Interim Cover 0.050 100.7 0.07 0.00 0.07 0 1.70 123.998 1723.57 144.05 1103 0.32% 0.8 51% 0.66 0.00 0.66 0 1.00 0.15 1.04 1.0 0.060 80.87 224.93 1.000 16.62 0.97 0.69 0.65 2.43 1.0 0.018 1.00 144.05 0.358 108.87 62.75 2 1.7 124.03 11.875 144.054
1.476 5608.15 71.2 0.308 71.2 1.7 0.72 0.43%Interim Cover 0.050 100.7 0.07 0.00 0.07 0 1.70 120.955 1681.27 140.50 956 0.43% 1.0 51% 0.67 0.00 0.67 0 1.00 0.15 1.04 1.0 0.060 79.63 220.13 1.000 16.67 0.97 0.68 0.66 2.31 1.0 0.019 1.00 140.50 0.338 91.39 54.03 2 1.7 120.97 11.582 140.503
1.640 5607.99 55.2 0.236 55.2 3.7 1.59 0.43%Interim Cover 0.050 100.7 0.08 0.00 0.08 0 1.70 93.772 1303.43 108.96 667 0.43% 1.1 51% 0.67 0.00 0.67 0 1.00 0.11 1.03 1.0 0.059 68.56 177.51 0.498 8.38 0.97 0.60 0.70 2.03 1.0 0.021 1.00 108.96 0.200 48.77 28.57 2 1.7 93.811 8.9815 108.956
1.804 5607.83 55.4 0.150 55.4 1.9 0.82 0.27%Interim Cover 0.050 100.7 0.09 0.00 0.09 0 1.70 94.095 1307.92 109.31 608 0.27% 0.9 51% 0.68 0.00 0.68 0 1.00 0.11 1.03 1.0 0.059 68.68 177.99 0.505 8.50 0.97 0.60 0.70 1.97 1.0 0.022 1.00 109.31 0.201 44.61 26.56 2 1.7 94.115 9.0106 109.309
1.968 5607.66 54.7 0.208 54.7 1.6 0.70 0.38%Interim Cover 0.050 100.7 0.10 0.00 0.10 0 1.70 92.905 1291.38 107.92 550 0.38% 1.1 51% 0.69 0.00 0.69 0 1.00 0.11 1.02 1.0 0.059 68.19 176.12 0.478 8.08 0.97 0.60 0.70 1.91 1.0 0.022 1.00 107.92 0.197 39.98 24.03 2 1.7 92.922 8.8964 107.924
2.133 5607.50 53.2 0.150 53.2 1.9 0.83 0.28%Interim Cover 0.050 100.7 0.11 0.00 0.11 0 1.70 90.491 1257.82 105.12 495 0.28% 1.0 51% 0.70 0.00 0.70 0 1.00 0.11 1.02 1.0 0.059 67.21 172.33 0.432 7.32 0.97 0.59 0.70 1.85 1.0 0.023 1.00 105.12 0.188 35.26 21.29 2 1.7 90.511 8.6655 105.123
2.297 5607.33 46.8 0.504 46.8 2.3 1.01 1.08%Interim Cover 0.050 100.7 0.12 0.00 0.12 0 1.70 79.560 1105.88 92.43 404 1.08% 1.5 51% 0.71 0.00 0.71 0 1.00 0.10 1.02 1.0 0.059 62.76 155.19 0.297 5.06 0.97 0.56 0.72 1.75 1.0 0.024 1.00 92.43 0.153 26.73 15.89 2 1.7 79.585 7.6194 92.433
2.461 5607.17 59.1 1.594 59.1 3.4 1.48 2.70%Interim Cover 0.050 100.7 0.12 0.00 0.12 0 1.70 100.470 1396.53 116.73 476 2.70% 1.8 51% 0.72 0.00 0.72 0 1.00 0.12 1.02 1.0 0.059 71.29 188.02 0.698 11.85 0.97 0.62 0.69 1.83 1.0 0.023 1.13 131.98 0.294 47.78 29.82 2 1.7 100.51 9.6225 116.732
2.625 5607.01 70.3 1.024 70.2 6.0 2.59 1.46%Interim Cover 0.050 100.7 0.13 0.00 0.13 0 1.70 119.408 1659.77 138.76 531 1.46% 1.6 51% 0.72 0.00 0.72 0 1.00 0.15 1.03 1.0 0.059 79.02 217.77 1.000 16.95 0.97 0.68 0.66 1.89 1.0 0.023 1.00 138.76 0.328 50.10 33.52 2 1.7 119.47 11.438 138.759
2.789 5606.84 132.5 0.906 132.5 6.2 2.67 0.68%Interim Cover 0.050 100.7 0.14 0.00 0.14 0 1.63 215.362 2993.54 250.20 942 0.68% 1.2 51% 0.73 0.00 0.73 0 0.99 0.30 1.05 1.0 0.060 ##### 368.33 1.000 16.58 0.97 0.91 0.60 2.07 1.0 0.021 1.00 250.20 1.000 143.62 80.10 2 1.62599 215.42 20.625 250.203
2.953 5606.68 69.0 0.500 69.0 1.8 0.78 0.72%Interim Cover 0.050 100.7 0.15 0.00 0.15 0 1.70 117.249 1629.76 136.20 463 0.73% 1.3 51% 0.74 0.00 0.74 0 0.99 0.14 1.02 1.0 0.059 78.12 214.32 1.000 17.04 0.97 0.67 0.66 1.81 1.0 0.024 1.00 136.20 0.315 42.74 29.89 2 1.7 117.27 11.227 136.200
3.117 5606.51 83.8 0.682 83.8 0.9 0.37 0.81%Interim Cover 0.050 100.7 0.16 0.00 0.16 0 1.70 142.375 1979.01 165.37 533 0.82% 1.4 51% 0.75 0.00 0.75 0 0.99 0.18 1.03 1.0 0.059 88.35 253.72 1.000 16.98 0.97 0.74 0.63 1.88 1.0 0.023 1.00 165.37 1.000 128.60 72.79 2 1.7 142.38 13.632 165.371
3.281 5606.35 49.0 0.298 49.0 3.9 1.69 0.61%Sand Tailings 0.051 102.8 0.17 0.00 0.17 0 1.70 83.334 1158.34 96.84 296 0.61% 1.4 18% 0.76 0.00 0.76 0 0.99 0.10 1.01 1.0 0.058 46.85 143.68 0.245 4.22 0.97 0.57 0.72 1.60 1.0 0.027 1.00 96.84 0.164 20.08 12.15 2 1.7 83.375 7.9824 96.836
3.445 5606.19 47.2 0.382 47.2 0.2 0.09 0.81%Sand Tailings 0.051 102.8 0.17 0.00 0.17 0 1.70 80.172 1114.39 93.12 270 0.81% 1.5 18% 0.77 0.00 0.77 0 0.99 0.10 1.01 1.0 0.058 45.89 139.01 0.229 3.95 0.97 0.56 0.72 1.56 1.0 0.027 1.00 93.12 0.155 18.02 10.99 2 1.7 80.174 7.6759 93.117
3.609 5606.02 46.3 0.306 46.3 0.6 0.28 0.66%Sand Tailings 0.051 102.8 0.18 0.00 0.18 0 1.70 78.761 1094.78 91.48 253 0.66% 1.5 18% 0.77 0.00 0.77 0 0.99 0.10 1.01 1.0 0.058 45.48 136.96 0.223 3.85 0.97 0.55 0.72 1.54 1.0 0.028 1.00 91.48 0.151 16.77 10.31 2 1.7 78.768 7.5412 91.484
3.773 5605.86 55.3 0.508 55.3 1.0 0.42 0.92%Sand Tailings 0.051 102.8 0.19 0.00 0.19 0 1.70 94.044 1307.21 109.24 289 0.92% 1.6 18% 0.78 0.00 0.78 0 0.99 0.11 1.01 1.0 0.058 50.02 159.25 0.321 5.56 0.97 0.60 0.70 1.58 1.0 0.027 1.00 109.24 0.201 21.33 13.45 2 1.7 94.054 9.0047 109.238
3.937 5605.69 80.4 1.013 80.4 1.5 0.64 1.26%Sand Tailings 0.051 102.8 0.20 0.00 0.20 0 1.70 136.731 1900.56 158.82 403 1.26% 1.6 18% 0.79 0.00 0.79 0 0.99 0.17 1.01 1.0 0.058 62.69 221.52 1.000 17.25 0.97 0.73 0.64 1.70 1.0 0.025 1.00 158.82 0.453 45.97 31.61 2 1.7 136.75 13.092 158.823
4.101 5605.53 74.3 1.624 74.3 3.7 1.58 2.19%Sand-Slime Tailing 0.059 119.0 0.21 0.00 0.21 1 1.70 126.310 1755.71 146.75 359 2.19% 1.8 47% 0.80 0.00 0.80 0 0.99 0.16 1.01 1.0 0.058 81.77 228.51 1.000 17.32 0.97 0.70 0.65 1.65 1.0 0.026 1.11 163.40 1.000 97.90 57.61 2 1.7 126.35 12.097 146.746
4.265 5605.36 52.7 1.775 52.6 12.2 5.30 3.37%Sand-Slime Tailing 0.059 119.0 0.22 0.01 0.21 1 1.70 89.471 1243.65 104.07 248 3.38% 2.1 47% 0.81 0.00 0.81 0 0.99 0.11 1.01 1.0 0.057 66.80 170.86 0.416 7.25 0.96 0.59 0.71 1.51 1.0 0.028 1.38 143.17 0.353 33.80 20.53 2 1.7 89.601 8.5784 104.066
4.429 5605.20 70.0 1.960 69.6 74.7 32.37 2.80%Sand-Slime Tailing 0.059 119.0 0.23 0.01 0.22 1 1.70 118.286 1644.18 138.30 323 2.81% 1.9 47% 0.82 0.00 0.82 0 0.99 0.14 1.01 1.0 0.057 78.81 217.11 1.000 17.43 0.96 0.68 0.66 1.60 1.0 0.027 1.21 167.80 1.000 93.77 55.60 2 1.7 119.08 11.401 138.303
4.593 5605.04 105.7 1.513 105.3 62.4 27.03 1.43%Sand Tailings 0.062 123.5 0.24 0.02 0.22 1 1.58 166.632 2316.18 194.25 477 1.43% 1.6 18% 0.83 0.00 0.83 0 0.98 0.25 1.01 1.0 0.057 71.75 266.00 1.000 17.41 0.96 0.80 0.60 1.72 1.0 0.025 1.00 194.25 1.000 91.68 54.55 2 1.581998 167.25 16.012 194.248
4.757 5604.87 102.3 1.285 102.2 16.0 6.92 1.26%Sand Tailings 0.062 123.5 0.25 0.02 0.23 1 1.59 162.173 2254.20 188.54 452 1.26% 1.6 18% 0.84 0.00 0.84 0 0.98 0.23 1.01 1.0 0.057 70.29 258.83 1.000 17.48 0.96 0.79 0.60 1.70 1.0 0.025 1.00 188.54 1.000 89.68 53.58 2 1.586663 162.33 15.542 188.538
4.921 5604.71 80.0 0.626 80.0 8.5 3.69 0.78%Sand Tailings 0.062 123.5 0.26 0.03 0.23 1 1.68 134.193 1865.28 155.96 345 0.79% 1.5 18% 0.85 0.00 0.85 0 0.98 0.17 1.00 1.0 0.057 61.96 217.92 1.000 17.56 0.96 0.72 0.64 1.61 1.0 0.026 1.00 155.96 0.433 37.99 27.78 2 1.678463 134.28 12.856 155.961
5.085 5604.54 81.2 0.386 81.2 9.8 4.26 0.48%Sand Tailings 0.062 123.5 0.27 0.03 0.24 1 1.66 134.859 1874.54 156.75 343 0.48% 1.3 18% 0.86 0.00 0.86 0 0.98 0.17 1.00 1.0 0.057 62.16 218.91 1.000 17.61 0.96 0.72 0.64 1.60 1.0 0.027 1.00 156.75 0.438 37.66 27.64 2 1.661641 134.96 12.921 156.749
5.249 5604.38 87.3 0.391 87.3 7.2 3.11 0.45%Sand Tailings 0.062 123.5 0.28 0.04 0.24 1 1.62 141.629 1968.64 164.58 361 0.45% 1.3 18% 0.87 0.00 0.87 0 0.98 0.18 1.00 1.0 0.057 64.16 228.74 1.000 17.67 0.96 0.74 0.63 1.60 1.0 0.026 1.00 164.58 1.000 84.19 50.93 2 1.622507 141.7 13.566 164.578
5.413 5604.22 72.7 0.332 72.7 2.6 1.13 0.46%Sand Tailings 0.062 123.5 0.29 0.04 0.25 1 1.68 122.447 1702.01 142.25 294 0.46% 1.3 18% 0.88 0.00 0.88 0 0.98 0.15 1.00 1.0 0.056 58.45 200.70 1.000 17.71 0.96 0.69 0.66 1.54 1.0 0.028 1.00 142.25 0.348 28.69 23.20 2 1.684504 122.47 11.726 142.246
5.577 5604.05 65.2 0.279 65.2 0.5 0.21 0.43%Sand Tailings 0.062 123.5 0.30 0.05 0.25 1 1.70 110.874 1541.15 128.78 259 0.43% 1.4 18% 0.89 0.00 0.89 0 0.98 0.13 1.00 1.0 0.056 55.01 183.79 0.604 10.72 0.96 0.66 0.67 1.50 1.0 0.028 1.00 128.78 0.279 22.54 16.63 2 1.7 110.88 10.616 128.779
5.741 5603.89 56.7 0.216 56.7 -0.1 -0.05 0.38%Sand Tailings 0.062 123.5 0.31 0.05 0.26 1 1.70 96.458 1340.77 112.03 220 0.38% 1.4 18% 0.90 0.00 0.90 0 0.98 0.12 0.99 1.0 0.056 50.73 162.76 0.345 6.14 0.96 0.61 0.69 1.45 1.0 0.029 1.00 112.03 0.211 16.72 11.43 2 1.7 96.457 9.2348 112.029
5.905 5603.72 48.8 0.259 48.8 -0.3 -0.13 0.53%Sand Tailings 0.062 123.5 0.32 0.06 0.26 1 1.70 83.028 1154.09 96.43 186 0.53% 1.5 18% 0.91 0.00 0.91 0 0.98 0.10 0.99 1.0 0.056 46.74 143.17 0.243 4.34 0.96 0.57 0.72 1.40 1.0 0.030 1.00 96.43 0.163 12.72 8.53 2 1.7 83.025 7.9488 96.428
6.069 5603.56 32.1 0.220 32.1 -0.3 -0.12 0.68%Sand-Slime Tailing 0.059 119.0 0.33 0.06 0.27 1 1.70 54.621 759.23 63.44 120 0.69% 1.7 47% 0.92 0.00 0.92 0 0.98 0.08 0.99 1.0 0.056 52.55 115.98 0.171 3.05 0.96 0.46 0.77 1.31 1.0 0.032 1.07 67.96 0.109 8.36 5.70 2 1.7 54.618 5.2291 63.436
6.234 5603.40 28.8 0.202 28.8 2.7 1.18 0.70%Sand-Slime Tailing 0.059 119.0 0.34 0.07 0.27 1 1.70 48.875 679.36 56.80 105 0.71% 1.8 47% 0.93 0.00 0.93 0 0.98 0.08 0.99 1.0 0.056 50.22 107.02 0.154 2.76 0.96 0.44 0.78 1.29 1.0 0.033 1.11 62.92 0.103 7.76 5.26 2 1.7 48.904 4.6821 56.799
6.398 5603.23 33.3 0.244 33.3 9.5 4.10 0.73%Sand-Slime Tailing 0.059 119.0 0.35 0.07 0.27 1 1.70 56.559 786.17 65.81 120 0.74% 1.8 47% 0.94 0.00 0.94 0 0.97 0.08 0.99 1.0 0.056 53.38 119.19 0.178 3.18 0.96 0.47 0.77 1.31 1.0 0.032 1.08 71.27 0.114 8.41 5.80 2 1.7 56.659 5.4246 65.806
6.562 5603.07 23.8 0.288 23.8 5.0 2.17 1.21%Sand-Slime Tailing 0.059 119.0 0.36 0.08 0.28 1 1.70 40.392 561.45 46.97 84 1.23% 2.0 47% 0.95 0.00 0.95 0 0.97 0.07 0.99 1.0 0.056 46.78 93.75 0.133 2.37 0.96 0.40 0.80 1.25 1.0 0.034 1.34 62.78 0.103 7.50 4.94 2 1.7 40.445 3.8722 46.974
6.726 5602.90 18.2 0.238 18.1 12.5 5.43 1.31%Sand-Slime Tailing 0.059 119.0 0.37 0.08 0.28 1 1.70 30.753 427.47 35.87 63 1.34% 2.1 47% 0.96 0.00 0.96 0 0.97 0.06 0.99 1.0 0.056 42.88 78.75 0.111 1.99 0.96 0.35 0.80 1.25 1.0 0.034 1.55 55.52 0.096 6.87 4.43 2 1.7 30.886 2.957 35.872
6.890 5602.74 11.8 0.147 11.7 14.5 6.28 1.25%Sand-Slime Tailing 0.059 119.0 0.38 0.09 0.29 1 1.70 19.907 276.71 23.30 40 1.29% 2.3 47% 0.97 0.00 0.97 0 0.97 0.05 0.99 1.0 0.056 38.47 61.77 0.090 1.61 0.96 0.28 0.80 1.24 1.0 0.034 1.94 45.17 0.088 6.18 3.90 2 1.7 20.061 1.9206 23.299
7.054 5602.58 9.2 0.122 9.1 23.8 10.33 1.32%Sand-Slime Tailing 0.059 119.0 0.39 0.09 0.29 1 1.70 15.453 214.80 18.24 30 1.38% 2.4 47% 0.98 0.00 0.98 0 0.97 0.05 0.99 1.0 0.056 36.70 54.94 0.082 1.48 0.96 0.25 0.80 1.24 1.0 0.034 2.36 42.97 0.086 5.96 3.72 2 1.7 15.706 1.5037 18.242
7.218 5602.41 9.2 0.089 9.0 30.6 13.24 0.97%Sand-Slime Tailing 0.059 119.0 0.40 0.10 0.30 1 1.70 15.232 211.72 18.07 29 1.02% 2.3 47% 0.99 0.00 0.99 0 0.97 0.05 0.99 1.0 0.056 36.64 54.71 0.082 1.48 0.96 0.25 0.80 1.24 1.0 0.034 2.11 38.20 0.082 5.59 3.54 2 1.7 15.556 1.4894 18.068
7.382 5602.25 9.9 0.100 9.7 31.6 13.69 1.01%Sand-Slime Tailing 0.059 119.0 0.41 0.10 0.30 1 1.70 16.524 229.68 19.58 31 1.05% 2.3 47% 1.00 0.00 1.00 0 0.97 0.05 0.99 1.0 0.056 37.17 56.75 0.084 1.52 0.96 0.26 0.80 1.23 1.0 0.034 2.05 40.20 0.083 5.62 3.57 2 1.7 16.859 1.6141 19.581
7.546 5602.08 8.5 0.080 8.3 34.3 14.88 0.94%Sand-Slime Tailing 0.059 119.0 0.42 0.11 0.31 1 1.70 14.127 196.37 16.83 26 0.99% 2.4 47% 1.01 0.00 1.01 0 0.97 0.05 0.99 1.0 0.055 36.20 53.04 0.080 1.45 0.96 0.24 0.80 1.23 1.0 0.034 2.24 37.68 0.081 5.40 3.43 2 1.7 14.491 1.3874 16.831
7.710 5601.92 10.2 0.068 10.0 38.1 16.51 0.67%Sand-Slime Tailing 0.059 119.0 0.43 0.11 0.31 1 1.70 16.932 235.35 20.13 31 0.70% 2.2 47% 1.02 0.00 1.02 0 0.97 0.05 0.99 1.0 0.055 37.36 57.50 0.085 1.54 0.96 0.26 0.80 1.23 1.0 0.034 1.78 35.77 0.080 5.22 3.38 2 1.7 17.336 1.6598 20.135
7.874 5601.76 8.5 0.060 8.2 38.1 16.49 0.71%Sand-Slime Tailing 0.059 119.0 0.44 0.12 0.32 1 1.70 14.008 194.71 16.74 25 0.75% 2.3 47% 1.03 0.00 1.03 0 0.96 0.05 0.99 1.0 0.055 36.17 52.91 0.080 1.45 0.96 0.24 0.80 1.22 1.0 0.035 2.07 34.68 0.079 5.09 3.27 2 1.7 14.412 1.3798 16.738
8.038 5601.59 7.6 0.064 7.3 45.6 19.77 0.84%Sand-Slime Tailing 0.059 119.0 0.45 0.13 0.32 1 1.70 12.478 173.44 15.05 22 0.89% 2.4 47% 1.04 0.00 1.04 0 0.96 0.05 0.99 1.0 0.055 35.58 50.64 0.078 1.41 0.96 0.22 0.80 1.22 1.0 0.035 2.41 36.22 0.080 5.10 3.26 2 1.7 12.962 1.241 15.055
8.202 5601.43 8.1 0.076 7.8 53.2 23.04 0.94%Sand-Slime Tailing 0.059 119.0 0.46 0.13 0.33 1 1.70 13.226 183.84 16.02 23 0.99% 2.4 47% 1.05 0.00 1.05 0 0.96 0.05 0.99 1.0 0.055 35.92 51.94 0.079 1.44 0.96 0.23 0.80 1.21 1.0 0.035 2.42 38.81 0.082 5.16 3.30 2 1.7 13.79 1.3203 16.017
8.366 5601.26 9.0 0.102 8.6 58.4 25.30 1.14%Sand-Slime Tailing 0.059 119.0 0.47 0.14 0.33 1 1.70 14.637 203.45 17.72 26 1.20% 2.4 47% 1.06 0.00 1.06 0 0.96 0.05 0.99 1.0 0.055 36.52 54.24 0.082 1.49 0.96 0.24 0.80 1.21 1.0 0.035 2.46 43.59 0.086 5.34 3.41 2 1.7 15.257 1.4607 17.720
8.530 5601.10 9.6 0.210 9.2 60.7 26.28 2.18%Slime Tailings 0.057 113.1 0.48 0.14 0.33 1 1.70 15.708 218.34 18.99 27 2.30% 2.6 71% 1.07 0.00 1.07 0 0.96 0.05 0.99 1.0 0.055 36.70 55.69 0.083 1.52 0.95 0.25 0.80 1.21 1.0 0.035 3.18 60.45 0.101 6.14 3.83 2 1.7 16.352 1.5655 18.991
8.694 5600.94 9.5 0.212 9.1 55.4 24.01 2.24%Slime Tailings 0.057 113.1 0.48 0.15 0.34 1 1.70 15.487 215.27 18.67 26 2.36% 2.6 71% 1.08 0.00 1.08 0 0.96 0.05 0.99 1.0 0.055 36.59 55.26 0.083 1.51 0.95 0.25 0.80 1.20 1.0 0.035 3.29 61.47 0.102 6.13 3.82 2 1.7 16.075 1.539 18.670
8.858 5600.77 13.5 0.188 13.3 28.4 12.31 1.39%Sand-Slime Tailing 0.059 119.0 0.49 0.15 0.34 1 1.70 22.610 314.28 26.61 38 1.45% 2.3 47% 1.09 0.00 1.09 0 0.96 0.06 0.99 1.0 0.055 39.63 66.24 0.095 1.74 0.95 0.30 0.80 1.20 1.0 0.035 2.09 55.72 0.096 5.72 3.73 2 1.7 22.912 2.1935 26.610
9.022 5600.61 9.0 0.166 8.9 12.6 5.48 1.85%Slime Tailings 0.057 113.1 0.50 0.16 0.35 1 1.70 15.130 210.31 17.73 24 1.96% 2.6 71% 1.10 0.00 1.10 0 0.96 0.05 0.99 1.0 0.055 36.26 53.99 0.081 1.49 0.95 0.24 0.80 1.20 1.0 0.035 3.17 56.22 0.097 5.68 3.59 2 1.7 15.264 1.4614 17.728
9.186 5600.44 7.1 0.173 6.9 30.7 13.29 2.45%Slime Tailings 0.057 113.1 0.51 0.16 0.35 1 1.70 11.662 162.10 13.92 19 2.65% 2.7 71% 1.10 0.00 1.10 0 0.96 0.05 0.99 1.0 0.055 34.94 48.86 0.076 1.40 0.95 0.22 0.80 1.20 1.0 0.035 4.35 60.51 0.101 5.86 3.63 2 1.7 11.987 1.1477 13.923
9.350 5600.28 12.4 0.106 12.1 47.2 20.44 0.86%Sand-Slime Tailing 0.059 119.0 0.52 0.17 0.36 1 1.70 20.536 285.45 24.43 33 0.89% 2.3 47% 1.11 0.00 1.11 0 0.96 0.06 0.99 1.0 0.054 38.87 63.30 0.092 1.68 0.95 0.29 0.80 1.19 1.0 0.035 1.87 45.60 0.088 5.06 3.37 2 1.7 21.037 2.0141 24.433
9.514 5600.12 15.4 0.097 15.3 14.9 6.47 0.63%Sand-Slime Tailing 0.059 119.0 0.53 0.17 0.36 1 1.70 25.959 360.83 30.33 41 0.65% 2.1 47% 1.12 0.00 1.12 0 0.95 0.06 0.98 1.0 0.054 40.94 71.27 0.101 1.86 0.95 0.32 0.80 1.19 1.0 0.035 1.50 45.61 0.088 4.99 3.43 2 1.7 26.118 2.5005 30.334
9.678 5599.95 15.1 0.080 15.0 11.2 4.83 0.53%Sand-Slime Tailing 0.059 119.0 0.54 0.18 0.37 1 1.70 25.517 354.69 29.77 40 0.55% 2.1 47% 1.13 0.00 1.13 0 0.95 0.06 0.98 1.0 0.054 40.74 70.52 0.100 1.85 0.95 0.32 0.80 1.19 1.0 0.035 1.46 43.48 0.086 4.83 3.34 2 1.7 25.635 2.4543 29.774
9.842 5599.79 22.9 0.122 22.8 15.7 6.78 0.53%Sand-Slime Tailing 0.059 119.0 0.55 0.18 0.37 1 1.70 38.743 538.53 45.19 60 0.55% 1.9 47% 1.14 0.00 1.14 0 0.95 0.07 0.98 1.0 0.054 46.15 91.34 0.129 2.39 0.95 0.39 0.80 1.18 1.0 0.035 1.23 55.64 0.096 5.32 3.85 2 1.7 38.909 3.7252 45.191
10.006 5599.62 18.5 0.100 18.4 10.4 4.49 0.54%Sand-Slime Tailing 0.059 119.0 0.56 0.19 0.38 1 1.70 31.263 434.56 36.44 48 0.56% 2.0 47% 1.15 0.00 1.15 0 0.95 0.06 0.98 1.0 0.054 43.08 79.52 0.112 2.07 0.95 0.35 0.80 1.18 1.0 0.036 1.35 49.19 0.091 4.98 3.53 2 1.7 31.373 3.0036 36.438
10.170 5599.46 16.5 0.082 16.5 6.1 2.66 0.50%Sand-Slime Tailing 0.059 119.0 0.57 0.19 0.38 1 1.70 28.050 389.90 32.65 42 0.51% 2.1 47% 1.16 0.00 1.16 0 0.95 0.06 0.98 1.0 0.054 41.75 74.41 0.105 1.95 0.95 0.33 0.80 1.18 1.0 0.036 1.40 45.68 0.088 4.76 3.36 2 1.7 28.115 2.6917 32.654
10.335 5599.30 11.5 0.074 11.5 5.9 2.54 0.64%Sand-Slime Tailing 0.059 119.0 0.58 0.20 0.38 1 1.70 19.482 270.80 22.70 28 0.68% 2.3 47% 1.17 0.00 1.17 0 0.95 0.05 0.98 1.0 0.054 38.26 60.96 0.089 1.65 0.95 0.28 0.80 1.18 1.0 0.036 1.87 42.42 0.085 4.56 3.10 2 1.7 19.544 1.8712 22.699
10.499 5599.13 8.2 0.078 8.2 6.6 2.85 0.95%Sand-Slime Tailing 0.059 119.0 0.59 0.20 0.39 1 1.70 13.855 192.58 16.17 20 1.03% 2.5 47% 1.18 0.00 1.18 0 0.95 0.05 0.98 1.0 0.054 35.97 52.15 0.080 1.48 0.95 0.23 0.80 1.17 1.0 0.036 2.78 45.02 0.087 4.62 3.05 2 1.7 13.925 1.3332 16.173
10.663 5598.97 8.3 0.043 8.3 9.0 3.92 0.52%Sand-Slime Tailing 0.059 119.0 0.60 0.21 0.39 1 1.70 14.059 195.42 16.44 20 0.56% 2.4 47% 1.19 0.00 1.19 0 0.95 0.05 0.98 1.0 0.054 36.07 52.51 0.080 1.49 0.95 0.23 0.80 1.17 1.0 0.036 2.24 36.81 0.081 4.21 2.85 2 1.7 14.155 1.3552 16.440
10.827 5598.80 9.2 0.024 9.2 10.5 4.53 0.26%Sand-Slime Tailing 0.059 119.0 0.61 0.21 0.40 1 1.70 15.589 216.69 18.23 22 0.28% 2.2 47% 1.20 0.00 1.20 0 0.95 0.05 0.98 1.0 0.054 36.70 54.93 0.082 1.53 0.95 0.25 0.80 1.17 1.0 0.036 1.76 32.06 0.077 3.96 2.75 2 1.7 15.7 1.5031 18.234
10.991 5598.64 8.6 0.074 8.5 13.3 5.75 0.87%Sand-Slime Tailing 0.059 119.0 0.62 0.22 0.40 1 1.70 14.399 200.15 16.89 20 0.93% 2.5 47% 1.21 0.00 1.21 0 0.94 0.05 0.98 1.0 0.054 36.22 53.11 0.081 1.50 0.95 0.24 0.80 1.16 1.0 0.036 2.67 45.07 0.088 4.47 2.99 2 1.7 14.54 1.392 16.887
11.155 5598.48 6.3 0.099 6.2 15.1 6.52 1.58%Slime Tailings 0.057 113.1 0.63 0.22 0.41 1 1.70 10.489 145.80 12.37 14 1.76% 2.8 71% 1.22 0.00 1.22 0 0.94 0.05 0.98 1.0 0.054 34.39 46.76 0.074 1.39 0.95 0.20 0.80 1.16 1.0 0.036 4.38 54.23 0.095 4.79 3.09 2 1.7 10.649 1.0195 12.368
11.319 5598.31 5.1 0.105 5.0 18.6 8.07 2.06%Slime Tailings 0.057 113.1 0.64 0.23 0.41 1 1.70 8.449 117.44 10.04 11 2.36% 2.9 71% 1.23 0.00 1.23 0 0.94 0.05 0.98 1.0 0.054 33.58 43.63 0.072 1.34 0.95 0.18 0.80 1.16 1.0 0.036 5.80 58.28 0.098 4.93 3.13 2 1.7 8.6466 0.8278 10.043
11.483 5598.15 4.3 0.115 4.1 26.9 11.65 2.67%Slime Tailings 0.057 113.1 0.65 0.23 0.42 1 1.70 7.038 97.83 8.51 9 3.14% 3.1 71% 1.24 0.00 1.24 0 0.94 0.04 0.98 1.0 0.054 33.05 41.56 0.070 1.31 0.95 0.17 0.80 1.16 1.0 0.036 7.36 62.61 0.103 5.10 3.20 2 1.7 7.3233 0.7011 8.506
11.647 5597.98 7.3 0.094 7.1 44.1 19.13 1.28%Slime Tailings 0.057 113.1 0.66 0.24 0.42 1 1.70 12.019 167.06 14.50 16 1.41% 2.6 71% 1.25 0.00 1.25 0 0.94 0.05 0.98 1.0 0.053 35.14 49.64 0.077 1.45 0.95 0.22 0.80 1.15 1.0 0.036 3.63 52.71 0.094 4.60 3.02 2 1.7 12.487 1.1955 14.503
11.811 5597.82 9.0 0.165 8.8 27.6 11.97 1.84%Slime Tailings 0.057 113.1 0.67 0.24 0.42 1 1.70 14.943 207.71 17.70 20 1.99% 2.7 71% 1.26 0.00 1.26 0 0.94 0.05 0.98 1.0 0.053 36.25 53.95 0.081 1.53 0.95 0.24 0.80 1.15 1.0 0.036 3.68 65.18 0.106 5.15 3.34 2 1.7 15.236 1.4587 17.696
11.975 5597.66 8.6 0.084 8.5 20.2 8.75 0.98%Sand-Slime Tailing 0.059 119.0 0.68 0.25 0.43 1 1.70 14.416 200.38 16.99 19 1.06% 2.5 47% 1.27 0.00 1.27 0 0.94 0.05 0.98 1.0 0.053 36.26 53.25 0.081 1.52 0.95 0.24 0.80 1.15 1.0 0.036 2.93 49.71 0.091 4.40 2.96 2 1.7 14.63 1.4007 16.992
Scaling Factor for stress ration, rm
Volumetric Strain Ratio for Site-Specific Design Eart
Equiv. Number of Uniform Strain Cycles, N
Youd et al. (2001)
CSR
M=7.5,
s'v=1atm
0.15
Earthquake Moment Magnitude, M: 5.5
Magnitude Scaling Factor, MSF:
Equil Pore
Pressure at time of
Conditions at t1 Liquefaction Triggering Analyses Idriss & Boulanger (2008)Equil
Pore
Pressure
at t1CN qc1 qc1 qc1N
Normalized Cone
Penetration Resistance, Qt
Normalized Friction
Ratio, Fr (%)
Total
Stress at
t1 Liquefiable?
1=Yes
2=No
Cyclic Stress RatioEffective
Stress at
t1
Saturated
at t1
Idriss & Boulanger (2008)
Idriss and Boulanger (2008)
Max. Horiz. Acceleration, Amax/g:
Earthquake Moment Magnitude, M:
Magnitude Scaling Factor, MSF:
WHITE MESA TAILINGS REPOSITORY LIQUEFACTION AND SEISMIC SETTLEMENT ANALYSES - 3-3S Elev. at
Top of Layer (ft)
Elev. At
Midpoint of Layer (ft)
Bottom
of Layer (ft)
Thickness of Layer (ft)
CSR
M=7.5,
s'v=1atm
Kc
High Compaction Layer
Platform/Random Fill Layer
Pw (u2)Pw (u2)
2013 CPT Data from ConeTec CPT Data Interpretations
fs/qt
Material Type (as determined
by fines
Unit Weight Unit Weight
Total Stress
at time of CPT
Depth
at time of CPT Elevation qt fs qc
Effective Stress at
time of CPT
Saturated
at time of CPT
Type Index, Ic FC
Youd, et al (2001)
Max. Horiz. Acceleration, Amax/g:
Stress at
Bottom of Layer (tsf)
Stress at
Midpoint of Layer (tsf)FINAL COVER
Erosion Protection Layer
Water Storage/Rooting Zone Layer
qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Equil Pore
Pressure at Midpoint of Layer (tsf)
Unit Weight (tcf)
Unit Weight (pcf)
Stress at
Bottom of Layer (tsf)
Stress at
Midpoint of Layer (tsf)
Pressure
at Bottom of Layer (tsf)
Cyclic Resistance Ratio
FoS
Cyclic Stress Ratio
FoS
∆qc1n qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Liquef_SeismicSettle_30Aug2015.xls Page 27 of 36
Energy Fuels Resources (USA) Inc.
White Mesa MillLiquefaction Analyses
Data File: 13-52106_SP3-3S-BSC-CPT 5605.60 Water surface elevation during CPT investigation (ft5609.63 Ground Surface Elevation at time of CPT (ft amsl)Location: White Mesa 2013 CPT Investigation 0.15 5601.35 Water surface elevation at t0 (ft amsl)5620.49 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl)
..\..\..\6.2.3 Field Data\2013 Field Investigation\Conetec Data 5.5 5582.14 Water surface elevation at t1 (ft amsl) 0.50 Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after pla ###### 5620.24 5619.99 0.50 0.055 110 0.028 0.014 0.00 0.00 0.028 0.014
Tailings Sands 1.69 5577.14 Water surface elevation at t2 (ft amsl)3.50 Thickness of Water Storage/Rooting Zone (ft) ###### 5618.24 5616.49 3.50 0.054 107 0.215 0.121 0.00 0.00 0.215 0.121
Tailings Sand-Slimes 3.50 Thickness of High Compaction Layer (ft)###### 5614.74 5612.99 3.50 0.060 120 0.424 0.320 0.00 0.00 0.424 0.320
Tailings Slimes 1.44 3.36 Thickness of Random/Platform Fill on on top of existing interim cover (ft) ###### 5611.31 5609.63 3.36 0.050 101 0.593 0.509 0.00 0.00 0.593 0.509
Interim Cover 0.47 1184.24 Additional Stress due to Final Cover Placement, ΔσFC (psf)
Cells Requiring User Input/Manipulation 2.21 2.21 7.51 5577.14 Elevation of bottom of tailings (liner) (ft amsl)
rd Cσ Kσ Ka rd Dr f Kσ Ka Avg CN qc1 qc1 qc1N
(ft) (ft amsl) TSF TSF TSF (ft) PSI (%) (tcf) (pcf) (tsf)(tsf)(tsf) 1=Yes TSF MPa % (tsf)(tsf)(tsf) 1=Yes FoS TSF MPa
0=No 0=No
Scaling Factor for stress ration, rm
Volumetric Strain Ratio for Site-Specific Design Eart
Equiv. Number of Uniform Strain Cycles, N
Youd et al. (2001)
CSR
M=7.5,
s'v=1atm
0.15
Earthquake Moment Magnitude, M: 5.5
Magnitude Scaling Factor, MSF:
Equil Pore
Pressure at time of
Conditions at t1 Liquefaction Triggering Analyses Idriss & Boulanger (2008)Equil
Pore
Pressure
at t1CN qc1 qc1 qc1N
Normalized Cone
Penetration Resistance, Qt
Normalized Friction
Ratio, Fr (%)
Total
Stress at
t1 Liquefiable?
1=Yes
2=No
Cyclic Stress RatioEffective
Stress at
t1
Saturated
at t1
Idriss & Boulanger (2008)
Idriss and Boulanger (2008)
Max. Horiz. Acceleration, Amax/g:
Earthquake Moment Magnitude, M:
Magnitude Scaling Factor, MSF:
WHITE MESA TAILINGS REPOSITORY LIQUEFACTION AND SEISMIC SETTLEMENT ANALYSES - 3-3S Elev. at
Top of Layer (ft)
Elev. At
Midpoint of Layer (ft)
Bottom
of Layer (ft)
Thickness of Layer (ft)
CSR
M=7.5,
s'v=1atm
Kc
High Compaction Layer
Platform/Random Fill Layer
Pw (u2)Pw (u2)
2013 CPT Data from ConeTec CPT Data Interpretations
fs/qt
Material Type (as determined
by fines
Unit Weight Unit Weight
Total Stress
at time of CPT
Depth
at time of CPT Elevation qt fs qc
Effective Stress at
time of CPT
Saturated
at time of CPT
Type Index, Ic FC
Youd, et al (2001)
Max. Horiz. Acceleration, Amax/g:
Stress at
Bottom of Layer (tsf)
Stress at
Midpoint of Layer (tsf)FINAL COVER
Erosion Protection Layer
Water Storage/Rooting Zone Layer
qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Equil Pore
Pressure at Midpoint of Layer (tsf)
Unit Weight (tcf)
Unit Weight (pcf)
Stress at
Bottom of Layer (tsf)
Stress at
Midpoint of Layer (tsf)
Pressure
at Bottom of Layer (tsf)
Cyclic Resistance Ratio
FoS
Cyclic Stress Ratio
FoS
∆qc1n qc1n-cs
(CRR)
M=7.5,
s'v=1atm
12.139 5597.49 10.5 0.047 10.4 14.1 6.11 0.45%Sand-Slime Tailing 0.059 119.0 0.69 0.25 0.43 1 1.70 17.663 245.52 20.69 23 0.48% 2.3 47% 1.28 0.00 1.28 0 0.94 0.05 0.98 1.0 0.053 37.56 58.25 0.086 1.62 0.95 0.26 0.80 1.15 1.0 0.036 1.95 40.29 0.084 3.98 2.80 2 1.7 17.813 1.7054 20.688
12.303 5597.33 10.3 0.077 10.2 9.8 4.26 0.75%Sand-Slime Tailing 0.059 119.0 0.70 0.26 0.44 1 1.70 17.362 241.32 20.29 22 0.80% 2.4 47% 1.29 0.00 1.29 0 0.94 0.05 0.98 1.0 0.053 37.42 57.70 0.085 1.61 0.95 0.26 0.80 1.14 1.0 0.036 2.34 47.56 0.090 4.23 2.92 2 1.697117 17.466 1.6722 20.285
12.467 5597.16 6.7 0.073 6.6 12.8 5.56 1.09%Slime Tailings 0.057 113.1 0.71 0.26 0.44 1 1.68 11.118 154.55 13.07 14 1.22% 2.7 71% 1.30 0.00 1.30 0 0.93 0.05 0.98 1.0 0.053 34.64 47.71 0.075 1.42 0.95 0.21 0.80 1.14 1.0 0.036 3.85 50.30 0.092 4.29 2.86 2 1.684611 11.253 1.0774 13.070
12.631 5597.00 8.2 0.034 8.1 16.4 7.12 0.41%Sand-Slime Tailing 0.059 119.0 0.71 0.27 0.45 1 1.67 13.584 188.82 15.98 17 0.45% 2.4 47% 1.31 0.00 1.31 0 0.93 0.05 0.98 1.0 0.053 35.90 51.88 0.079 1.50 0.95 0.23 0.80 1.14 1.0 0.037 2.35 37.50 0.081 3.76 2.63 2 1.670909 13.756 1.317 15.977
12.795 5596.83 9.3 0.032 9.2 15.5 6.73 0.34%Sand-Slime Tailing 0.059 119.0 0.72 0.27 0.45 1 1.66 15.282 212.42 17.94 19 0.37% 2.3 47% 1.32 0.00 1.32 0 0.93 0.05 0.98 1.0 0.053 36.59 54.53 0.082 1.56 0.94 0.24 0.80 1.14 1.0 0.037 2.04 36.66 0.081 3.69 2.62 2 1.657459 15.442 1.4785 17.935
12.959 5596.67 9.4 0.034 9.3 15.5 6.73 0.36%Sand-Slime Tailing 0.059 119.0 0.73 0.28 0.46 1 1.64 15.259 212.10 17.91 19 0.39% 2.3 47% 1.33 0.00 1.33 0 0.93 0.05 0.98 1.0 0.053 36.58 54.49 0.082 1.56 0.94 0.24 0.80 1.14 1.0 0.037 2.08 37.23 0.081 3.68 2.62 2 1.644253 15.418 1.4761 17.907
13.123 5596.51 9.5 0.043 9.4 15.8 6.83 0.45%Sand-Slime Tailing 0.059 119.0 0.74 0.28 0.46 1 1.63 15.350 213.37 18.02 19 0.49% 2.4 47% 1.34 0.00 1.34 0 0.93 0.05 0.98 1.0 0.053 36.62 54.63 0.082 1.56 0.94 0.25 0.80 1.13 1.0 0.037 2.20 39.68 0.083 3.73 2.65 2 1.631284 15.511 1.485 18.015
13.287 5596.34 9.1 0.054 9.0 16.3 7.05 0.59%Sand-Slime Tailing 0.059 119.0 0.75 0.29 0.47 1 1.62 14.632 203.38 17.18 18 0.64% 2.4 47% 1.35 0.00 1.35 0 0.93 0.05 0.98 1.0 0.052 36.33 53.51 0.081 1.54 0.94 0.24 0.80 1.13 1.0 0.037 2.49 42.76 0.086 3.81 2.68 2 1.618546 14.796 1.4166 17.185
13.451 5596.18 9.2 0.068 9.1 17.0 7.36 0.74%Sand-Slime Tailing 0.059 119.0 0.76 0.29 0.47 1 1.61 14.615 203.15 17.17 18 0.81% 2.5 47% 1.36 0.00 1.36 0 0.93 0.05 0.98 1.0 0.052 36.32 53.50 0.081 1.55 0.94 0.24 0.80 1.13 1.0 0.037 2.69 46.27 0.089 3.90 2.72 2 1.606033 14.785 1.4155 17.172
13.615 5596.01 9.3 0.080 9.2 17.0 7.38 0.86%Sand-Slime Tailing 0.059 119.0 0.77 0.30 0.47 1 1.59 14.710 204.47 17.28 18 0.93% 2.5 47% 1.37 0.00 1.37 0 0.93 0.05 0.98 1.0 0.052 36.36 53.64 0.081 1.55 0.94 0.24 0.80 1.13 1.0 0.037 2.84 49.02 0.091 3.97 2.76 2 1.593738 14.88 1.4246 17.282
13.779 5595.85 11.2 0.068 11.1 17.5 7.60 0.61%Sand-Slime Tailing 0.059 119.0 0.78 0.30 0.48 1 1.58 17.525 243.59 20.55 22 0.65% 2.4 47% 1.38 0.00 1.38 0 0.92 0.05 0.98 1.0 0.052 37.51 58.07 0.086 1.65 0.94 0.26 0.80 1.12 1.0 0.037 2.20 45.17 0.088 3.79 2.72 2 1.581655 17.698 1.6944 20.555
13.943 5595.69 14.4 0.082 14.3 15.5 6.70 0.57%Sand-Slime Tailing 0.059 119.0 0.79 0.31 0.48 1 1.54 22.107 307.29 25.85 28 0.60% 2.3 47% 1.39 0.00 1.39 0 0.92 0.06 0.97 1.0 0.052 39.37 65.22 0.094 1.81 0.94 0.29 0.80 1.12 1.0 0.037 1.81 46.71 0.089 3.81 2.81 2 1.54164 22.256 2.1308 25.849
14.107 5595.52 11.4 0.115 11.3 15.5 6.72 1.01%Sand-Slime Tailing 0.059 119.0 0.80 0.31 0.49 1 1.56 17.669 245.60 20.70 22 1.08% 2.5 47% 1.39 0.00 1.39 0 0.92 0.05 0.97 1.0 0.052 37.56 58.26 0.086 1.65 0.94 0.26 0.80 1.12 1.0 0.037 2.64 54.59 0.095 4.04 2.85 2 1.558105 17.82 1.7061 20.696
14.271 5595.36 8.1 0.115 8.0 17.0 7.37 1.43%Slime Tailings 0.057 113.1 0.81 0.32 0.49 1 1.55 12.321 171.26 14.50 15 1.59% 2.7 71% 1.40 0.00 1.40 0 0.92 0.05 0.98 1.0 0.052 35.14 49.64 0.077 1.48 0.94 0.22 0.80 1.12 1.0 0.037 4.03 58.43 0.099 4.15 2.82 2 1.547803 12.485 1.1953 14.500
14.436 5595.19 7.0 0.051 6.9 19.3 8.34 0.73%Sand-Slime Tailing 0.059 119.0 0.82 0.32 0.50 1 1.54 10.571 146.94 12.49 12 0.83% 2.6 47% 1.41 0.00 1.41 0 0.92 0.05 0.98 1.0 0.052 34.68 47.17 0.075 1.44 0.94 0.20 0.80 1.12 1.0 0.037 3.54 44.20 0.087 3.62 2.53 2 1.536496 10.756 1.0298 12.492
14.600 5595.03 6.4 0.033 6.3 17.8 7.71 0.52%Sand-Slime Tailing 0.059 119.0 0.83 0.33 0.50 1 1.53 9.534 132.52 11.27 11 0.60% 2.6 47% 1.42 0.00 1.42 0 0.92 0.05 0.98 1.0 0.052 34.25 45.52 0.073 1.41 0.94 0.19 0.80 1.11 1.0 0.037 3.48 39.19 0.083 3.42 2.42 2 1.525376 9.703 0.929 11.269
14.764 5594.87 5.4 0.063 5.2 20.0 8.68 1.18%Slime Tailings 0.057 113.1 0.84 0.33 0.51 1 1.52 7.926 110.18 9.43 9 1.40% 2.9 71% 1.43 0.00 1.43 0 0.92 0.04 0.98 1.0 0.052 33.37 42.80 0.071 1.37 0.94 0.18 0.80 1.11 1.0 0.037 5.37 50.59 0.092 3.78 2.57 2 1.515559 8.116 0.777 9.426
14.928 5594.70 4.8 0.108 4.6 28.3 12.24 2.27%Slime Tailings 0.057 113.1 0.85 0.34 0.51 1 1.51 6.912 96.08 8.34 8 2.76% 3.1 71% 1.44 0.00 1.44 0 0.92 0.04 0.98 1.0 0.052 32.99 41.33 0.070 1.35 0.94 0.17 0.80 1.11 1.0 0.037 7.58 63.21 0.103 4.22 2.78 2 1.505884 7.1776 0.6872 8.336
15.092 5594.54 4.8 0.126 4.7 28.1 12.16 2.60%Slime Tailings 0.057 113.1 0.86 0.35 0.51 1 1.50 6.988 97.13 8.42 8 3.16% 3.1 71% 1.45 0.00 1.45 0 0.91 0.04 0.98 1.0 0.052 33.02 41.44 0.070 1.35 0.94 0.17 0.80 1.11 1.0 0.037 7.94 66.87 0.108 4.36 2.85 2 1.49635 7.25 0.6941 8.420
15.256 5594.37 5.7 0.083 5.6 15.5 6.72 1.45%Slime Tailings 0.057 113.1 0.87 0.35 0.52 1 1.49 8.357 116.16 9.87 9 1.71% 2.9 71% 1.46 0.00 1.46 0 0.91 0.05 0.98 1.0 0.052 33.53 43.40 0.071 1.39 0.94 0.18 0.80 1.11 1.0 0.037 5.61 55.39 0.096 3.84 2.62 2 1.486952 8.5006 0.8139 9.873
15.420 5594.21 8.3 0.060 8.2 16.1 6.98 0.72%Sand-Slime Tailing 0.059 119.0 0.88 0.36 0.52 1 1.48 12.153 168.92 14.29 14 0.81% 2.6 47% 1.47 0.00 1.47 0 0.91 0.05 0.97 1.0 0.051 35.31 49.60 0.077 1.50 0.94 0.22 0.80 1.10 1.0 0.037 3.18 45.42 0.088 3.49 2.50 2 1.476628 12.301 1.1777 14.287
15.584 5594.05 8.5 0.058 8.4 8.8 3.83 0.68%Sand-Slime Tailing 0.059 119.0 0.89 0.36 0.53 1 1.47 12.348 171.63 14.44 14 0.76% 2.6 47% 1.48 0.00 1.48 0 0.91 0.05 0.97 1.0 0.051 35.36 49.80 0.077 1.51 0.94 0.22 0.80 1.10 1.0 0.038 3.10 44.78 0.087 3.44 2.48 2 1.466466 12.429 1.1899 14.435
15.748 5593.88 7.7 0.056 7.6 10.8 4.66 0.73%Sand-Slime Tailing 0.059 119.0 0.90 0.37 0.53 1 1.46 11.084 154.06 12.99 13 0.83% 2.6 47% 1.49 0.00 1.49 0 0.91 0.05 0.97 1.0 0.051 34.86 47.84 0.075 1.47 0.94 0.21 0.80 1.10 1.0 0.038 3.48 45.16 0.088 3.43 2.45 2 1.456463 11.182 1.0705 12.987
15.912 5593.72 8.0 0.059 7.9 13.9 6.00 0.74%Sand-Slime Tailing 0.059 119.0 0.91 0.37 0.54 1 1.45 11.457 159.25 13.45 13 0.83% 2.6 47% 1.50 0.00 1.50 0 0.91 0.05 0.97 1.0 0.051 35.02 48.47 0.076 1.49 0.94 0.21 0.80 1.10 1.0 0.038 3.39 45.63 0.088 3.41 2.45 2 1.446613 11.582 1.1089 13.452
16.076 5593.55 8.8 0.072 8.7 17.5 7.57 0.82%Sand-Slime Tailing 0.059 119.0 0.92 0.38 0.54 1 1.44 12.487 173.57 14.68 15 0.91% 2.6 47% 1.51 0.00 1.51 0 0.91 0.05 0.97 1.0 0.051 35.45 50.14 0.078 1.52 0.94 0.22 0.80 1.10 1.0 0.038 3.28 48.10 0.090 3.47 2.49 2 1.436914 12.643 1.2105 14.685
16.240 5593.39 9.7 0.120 9.5 20.4 8.83 1.24%Sand-Slime Tailing 0.059 119.0 0.93 0.38 0.55 1 1.43 13.603 189.08 16.01 16 1.37% 2.6 47% 1.52 0.00 1.52 0 0.91 0.05 0.97 1.0 0.051 35.92 51.93 0.079 1.56 0.94 0.23 0.80 1.10 1.0 0.038 3.59 57.55 0.098 3.73 2.64 2 1.427362 13.784 1.3197 16.010
16.404 5593.23 8.3 0.200 8.1 21.3 9.25 2.42%Slime Tailings 0.057 113.1 0.94 0.39 0.55 1 1.42 11.536 160.35 13.62 13 2.73% 2.9 71% 1.53 0.00 1.53 0 0.90 0.05 0.97 1.0 0.051 34.83 48.45 0.076 1.49 0.94 0.21 0.80 1.09 1.0 0.038 5.42 73.86 0.117 4.45 2.97 2 1.418919 11.725 1.1225 13.618
16.568 5593.06 7.0 0.183 6.9 21.4 9.27 2.60%Slime Tailings 0.057 113.1 0.95 0.39 0.55 1 1.41 9.747 135.49 11.54 11 3.00% 3.0 71% 1.54 0.00 1.54 0 0.90 0.05 0.97 1.0 0.051 34.11 45.65 0.073 1.45 0.94 0.20 0.80 1.09 1.0 0.038 6.34 73.18 0.116 4.38 2.91 2 1.410589 9.9355 0.9512 11.540
16.732 5592.90 6.2 0.154 6.1 20.6 8.92 2.48%Slime Tailings 0.057 113.1 0.95 0.40 0.56 1 1.40 8.540 118.71 10.13 9 2.93% 3.0 71% 1.55 0.00 1.55 0 0.90 0.05 0.97 1.0 0.051 33.61 43.74 0.072 1.41 0.94 0.18 0.80 1.09 1.0 0.038 6.88 69.68 0.111 4.16 2.79 2 1.40237 8.7206 0.8349 10.128
16.896 5592.73 6.9 0.091 6.7 28.8 12.50 1.32%Slime Tailings 0.057 113.1 0.96 0.40 0.56 1 1.39 9.383 130.43 11.19 11 1.53% 2.8 71% 1.56 0.00 1.56 0 0.90 0.05 0.97 1.0 0.051 33.98 45.17 0.073 1.44 0.94 0.19 0.80 1.09 1.0 0.038 4.96 55.55 0.096 3.56 2.50 2 1.394258 9.6344 0.9224 11.190
17.060 5592.57 9.6 0.063 9.5 22.1 9.56 0.66%Sand-Slime Tailing 0.059 119.0 0.97 0.41 0.57 1 1.39 13.119 182.36 15.46 15 0.73% 2.5 47% 1.57 0.00 1.57 0 0.90 0.05 0.97 1.0 0.050 35.72 51.18 0.079 1.56 0.93 0.23 0.80 1.09 1.0 0.038 2.93 45.31 0.088 3.23 2.39 2 1.385338 13.31 1.2743 15.459
17.224 5592.41 11.3 0.052 11.2 22.1 9.56 0.46%Sand-Slime Tailing 0.059 119.0 0.98 0.41 0.57 1 1.38 15.417 214.30 18.13 18 0.50% 2.4 47% 1.58 0.00 1.58 0 0.90 0.05 0.97 1.0 0.050 36.66 54.79 0.082 1.63 0.93 0.25 0.80 1.09 1.0 0.038 2.30 41.65 0.085 3.09 2.36 2 1.376546 15.607 1.4942 18.127
17.388 5592.24 12.6 0.071 12.4 21.2 9.17 0.57%Sand-Slime Tailing 0.059 119.0 0.99 0.42 0.58 1 1.37 16.989 236.15 19.94 20 0.61% 2.4 47% 1.59 0.00 1.59 0 0.90 0.05 0.97 1.0 0.050 37.30 57.24 0.085 1.69 0.93 0.26 0.80 1.08 1.0 0.038 2.28 45.39 0.088 3.18 2.44 2 1.367881 17.17 1.6438 19.942
17.552 5592.08 13.7 0.092 13.6 19.3 8.35 0.67%Sand-Slime Tailing 0.059 119.0 1.00 0.42 0.58 1 1.36 18.404 255.82 21.57 22 0.73% 2.4 47% 1.60 0.00 1.60 0 0.90 0.05 0.97 1.0 0.050 37.86 59.43 0.087 1.74 0.93 0.27 0.80 1.08 1.0 0.038 2.27 48.98 0.091 3.27 2.50 2 1.357251 18.568 1.7777 21.565
17.716 5591.91 13.7 0.124 13.6 19.8 8.56 0.91%Sand-Slime Tailing 0.059 119.0 1.01 0.43 0.59 1 1.35 18.297 254.32 21.44 22 0.98% 2.5 47% 1.61 0.00 1.61 0 0.89 0.05 0.97 1.0 0.050 37.82 59.27 0.087 1.74 0.93 0.27 0.80 1.08 1.0 0.038 2.55 54.65 0.095 3.40 2.57 2 1.349318 18.463 1.7677 21.444
17.880 5591.75 11.4 0.157 11.3 19.8 8.58 1.38%Sand-Slime Tailing 0.059 119.0 1.02 0.43 0.59 1 1.34 15.145 210.51 17.78 18 1.51% 2.6 47% 1.61 0.00 1.61 0 0.89 0.05 0.97 1.0 0.050 36.54 54.32 0.082 1.64 0.93 0.24 0.80 1.08 1.0 0.038 3.51 62.37 0.103 3.63 2.64 2 1.342614 15.311 1.4658 17.782
18.044 5591.59 10.6 0.162 10.5 21.3 9.25 1.52%Sand-Slime Tailing 0.059 119.0 1.03 0.44 0.60 1 1.33 14.025 194.94 16.50 16 1.69% 2.7 47% 1.62 0.00 1.62 0 0.89 0.05 0.97 1.0 0.050 36.09 52.58 0.080 1.60 0.93 0.23 0.80 1.08 1.0 0.038 3.89 64.15 0.105 3.68 2.64 2 1.334426 14.203 1.3598 16.495
18.208 5591.42 9.0 0.183 8.9 21.8 9.45 2.03%Slime Tailings 0.057 113.1 1.04 0.44 0.60 1 1.33 11.759 163.45 13.87 13 2.30% 2.8 71% 1.63 0.00 1.63 0 0.89 0.05 0.97 1.0 0.050 34.92 48.78 0.076 1.53 0.93 0.21 0.80 1.08 1.0 0.038 5.05 70.01 0.112 3.91 2.72 2 1.32718 11.939 1.1431 13.867
18.372 5591.26 8.4 0.100 8.2 27.4 11.89 1.19%Sand-Slime Tailing 0.059 119.0 1.05 0.45 0.60 1 1.32 10.844 150.73 12.86 12 1.36% 2.7 47% 1.64 0.00 1.64 0 0.89 0.05 0.97 1.0 0.050 34.81 47.67 0.075 1.51 0.93 0.21 0.80 1.07 1.0 0.038 4.32 55.55 0.096 3.33 2.42 2 1.319204 11.07 1.0598 12.857
18.537 5591.09 13.5 0.095 13.4 21.3 9.22 0.70%Sand-Slime Tailing 0.059 119.0 1.06 0.45 0.61 1 1.31 17.559 244.07 20.60 20 0.76% 2.4 47% 1.65 0.00 1.65 0 0.89 0.05 0.97 1.0 0.050 37.52 58.12 0.086 1.73 0.93 0.26 0.80 1.07 1.0 0.038 2.41 49.69 0.091 3.15 2.44 2 1.311337 17.733 1.6977 20.596
18.701 5590.93 10.1 0.120 10.0 17.8 7.69 1.19%Sand-Slime Tailing 0.059 119.0 1.07 0.46 0.61 1 1.30 12.971 180.29 15.23 15 1.33% 2.7 47% 1.66 0.00 1.66 0 0.89 0.05 0.97 1.0 0.050 35.64 50.88 0.078 1.58 0.93 0.23 0.80 1.07 1.0 0.038 3.77 57.42 0.098 3.34 2.46 2 1.303575 13.115 1.2556 15.232
18.865 5590.77 9.9 0.116 9.8 18.7 8.10 1.17%Sand-Slime Tailing 0.059 119.0 1.08 0.46 0.62 1 1.30 12.648 175.81 14.87 14 1.32% 2.7 47% 1.67 0.00 1.67 0 0.89 0.05 0.97 1.0 0.050 35.52 50.38 0.078 1.57 0.93 0.22 0.80 1.07 1.0 0.038 3.83 56.90 0.097 3.30 2.44 2 1.295918 12.799 1.2254 14.866
19.029 5590.60 14.0 0.163 13.9 13.3 5.75 1.17%Sand-Slime Tailing 0.059 119.0 1.09 0.47 0.62 1 1.29 17.870 248.39 20.88 21 1.27% 2.5 47% 1.68 0.00 1.68 0 0.88 0.05 0.96 1.0 0.049 37.62 58.50 0.086 1.75 0.93 0.26 0.80 1.07 1.0 0.038 2.92 60.91 0.101 3.41 2.58 2 1.288362 17.976 1.7211 20.878
19.193 5590.44 13.6 0.284 13.5 11.7 5.08 2.09%Sand-Slime Tailing 0.059 119.0 1.10 0.47 0.63 1 1.28 17.279 240.18 20.18 20 2.28% 2.7 47% 1.69 0.00 1.69 0 0.88 0.05 0.96 1.0 0.049 37.38 57.56 0.085 1.73 0.93 0.26 0.80 1.07 1.0 0.038 3.88 78.37 0.125 4.18 2.96 2 1.280906 17.373 1.6633 20.178
19.357 5590.27 10.2 0.200 10.1 14.7 6.36 1.96%Slime Tailings 0.057 113.1 1.11 0.48 0.63 1 1.27 12.883 179.08 15.10 14 2.20% 2.8 71% 1.70 0.00 1.70 0 0.88 0.05 0.97 1.0 0.049 35.35 50.44 0.078 1.58 0.93 0.22 0.80 1.06 1.0 0.038 4.70 70.98 0.113 3.77 2.68 2 1.274303 13 1.2446 15.099
19.521 5590.11 17.8 0.357 17.7 18.6 8.07 2.00%Sand-Slime Tailing 0.059 119.0 1.12 0.48 0.64 1 1.25 22.210 308.72 25.96 26 2.14% 2.6 47% 1.71 0.00 1.71 0 0.88 0.06 0.96 1.0 0.049 39.41 65.37 0.094 1.92 0.93 0.29 0.80 1.06 1.0 0.038 3.15 81.85 0.131 4.34 3.13 2 1.254795 22.356 2.1403 25.965
19.685 5589.95 22.3 0.302 22.2 25.3 10.96 1.35%Sand-Slime Tailing 0.059 119.0 1.13 0.49 0.64 1 1.24 27.383 380.62 32.03 33 1.43% 2.4 47% 1.72 0.00 1.72 0 0.88 0.06 0.96 1.0 0.049 41.53 73.56 0.104 2.14 0.93 0.33 0.80 1.06 1.0 0.038 2.26 72.25 0.115 3.79 2.96 2 1.235675 27.578 2.6403 32.030
19.849 5589.78 22.1 0.259 21.8 57.2 24.79 1.17%Sand-Slime Tailing 0.059 119.0 1.14 0.49 0.65 1 1.23 26.790 372.39 31.63 33 1.23% 2.4 47% 1.73 0.00 1.73 0 0.88 0.06 0.96 1.0 0.049 41.39 73.02 0.103 2.13 0.92 0.32 0.80 1.06 1.0 0.038 2.14 67.74 0.109 3.57 2.85 2 1.230044 27.23 2.607 31.626
20.013 5589.62 20.9 0.204 20.3 100.3 43.47 0.98%Sand-Slime Tailing 0.059 119.0 1.15 0.50 0.65 1 1.23 24.850 345.41 29.75 30 1.03% 2.3 47% 1.74 0.00 1.74 0 0.88 0.06 0.96 1.0 0.049 40.74 70.49 0.100 2.06 0.92 0.31 0.80 1.06 1.0 0.038 2.08 62.00 0.102 3.33 2.69 2 1.227142 25.618 2.4527 29.754
20.177 5589.45 18.6 0.237 17.7 151.5 65.65 1.27%Sand-Slime Tailing 0.059 119.0 1.16 0.50 0.65 1 1.23 21.715 301.84 26.57 27 1.36% 2.5 47% 1.75 0.00 1.75 0 0.87 0.06 0.96 1.0 0.049 39.62 66.19 0.095 1.96 0.92 0.30 0.80 1.06 1.0 0.038 2.53 67.18 0.108 3.50 2.73 2 1.226825 22.875 2.1901 26.568
20.341 5589.29 19.8 0.274 18.9 136.1 58.99 1.39%Sand-Slime Tailing 0.059 119.0 1.17 0.51 0.66 1 1.22 23.028 320.09 27.95 28 1.47% 2.5 47% 1.76 0.00 1.76 0 0.87 0.06 0.96 1.0 0.048 40.10 68.05 0.097 2.01 0.92 0.31 0.80 1.05 1.0 0.038 2.53 70.78 0.113 3.64 2.82 2 1.217786 24.063 2.3038 27.948
20.505 5589.13 25.1 0.237 24.5 96.6 41.86 0.95%Sand-Slime Tailing 0.059 119.0 1.18 0.51 0.66 1 1.20 29.354 408.02 34.93 36 0.99% 2.3 47% 1.77 0.00 1.77 0 0.87 0.06 0.96 1.0 0.048 42.55 77.49 0.109 2.27 0.92 0.34 0.80 1.05 1.0 0.038 1.85 64.63 0.105 3.36 2.82 2 1.200092 30.078 2.8797 34.934
20.669 5588.96 31.4 0.092 31.0 58.2 25.23 0.29%Sand Tailings 0.062 123.5 1.19 0.52 0.67 1 1.18 36.693 510.03 43.12 45 0.30% 1.9 18% 1.78 0.00 1.78 0 0.87 0.07 0.95 1.0 0.048 33.11 76.23 0.108 2.25 0.92 0.38 0.80 1.05 1.0 0.038 1.24 53.32 0.094 2.99 2.62 2 1.182877 37.123 3.5541 43.116
20.833 5588.80 32.9 0.194 32.7 35.6 15.43 0.59%Sand Tailings 0.062 123.5 1.20 0.52 0.67 1 1.17 38.397 533.72 44.90 47 0.61% 2.1 18% 1.79 0.00 1.79 0 0.87 0.07 0.95 1.0 0.048 33.57 78.47 0.111 2.31 0.92 0.39 0.80 1.05 1.0 0.038 1.39 62.28 0.102 3.24 2.78 2 1.174936 38.658 3.7011 44.899
20.997 5588.63 22.6 0.202 22.3 42.9 18.60 0.90%Sand-Slime Tailing 0.059 119.0 1.21 0.53 0.68 1 1.19 26.475 368.01 31.12 31 0.95% 2.3 47% 1.80 0.00 1.80 0 0.87 0.06 0.96 1.0 0.048 41.22 72.33 0.103 2.14 0.91 0.32 0.80 1.05 1.0 0.038 1.97 61.27 0.101 3.19 2.66 2 1.187235 26.793 2.5652 31.119
21.161 5588.47 21.0 0.114 20.8 20.1 8.70 0.54%Sand-Slime Tailing 0.059 119.0 1.22 0.53 0.68 1 1.18 24.679 343.04 28.84 29 0.58% 2.2 47% 1.81 0.00 1.81 0 0.87 0.06 0.96 1.0 0.048 40.41 69.25 0.099 2.06 0.91 0.31 0.80 1.05 1.0 0.038 1.76 50.76 0.092 2.88 2.47 2 1.18478 24.827 2.377 28.836
21.325 5588.30 21.1 0.201 20.9 37.0 16.04 0.95%Sand-Slime Tailing 0.059 119.0 1.23 0.54 0.69 1 1.18 24.625 342.29 28.92 29 1.01% 2.4 47% 1.82 0.00 1.82 0 0.87 0.06 0.96 1.0 0.048 40.44 69.36 0.099 2.06 0.91 0.31 0.80 1.05 1.0 0.038 2.13 61.57 0.102 3.17 2.62 2 1.178797 24.897 2.3837 28.917
21.489 5588.14 22.3 0.267 21.9 66.8 28.93 1.20%Sand-Slime Tailing 0.059 119.0 1.24 0.54 0.69 1 1.17 25.657 356.63 30.37 30 1.27% 2.4 47% 1.83 0.00 1.83 0 0.86 0.06 0.96 1.0 0.048 40.95 71.32 0.101 2.12 0.91 0.32 0.80 1.04 1.0 0.038 2.26 68.55 0.110 3.40 2.76 2 1.170998 26.145 2.5031 30.365
21.653 5587.98 18.5 0.419 18.0 91.4 39.59 2.26%Sand-Slime Tailing 0.059 119.0 1.25 0.55 0.70 1 1.17 21.059 292.72 25.24 25 2.42% 2.6 47% 1.84 0.00 1.84 0 0.86 0.06 0.96 1.0 0.048 39.15 64.39 0.093 1.94 0.91 0.29 0.80 1.04 1.0 0.038 3.47 87.68 0.143 4.39 3.17 2 1.172557 21.728 2.0802 25.236
21.817 5587.81 22.9 0.248 22.0 149.4 64.72 1.08%Sand-Slime Tailing 0.059 119.0 1.26 0.55 0.70 1 1.16 25.478 354.15 30.85 31 1.15% 2.4 47% 1.85 0.00 1.85 0 0.86 0.06 0.95 1.0 0.048 41.12 71.97 0.102 2.15 0.91 0.32 0.80 1.04 1.0 0.038 2.15 66.25 0.107 3.28 2.71 2 1.159148 26.559 2.5427 30.847
21.981 5587.65 28.4 0.235 27.8 83.5 36.19 0.83%Sand-Slime Tailing 0.059 119.0 1.27 0.56 0.71 1 1.15 31.904 443.46 37.75 38 0.87% 2.2 47% 1.86 0.00 1.86 0 0.86 0.06 0.95 1.0 0.047 43.54 81.29 0.114 2.42 0.91 0.35 0.80 1.04 1.0 0.038 1.70 64.18 0.105 3.19 2.80 2 1.145975 32.501 3.1117 37.748
22.145 5587.48 22.2 0.322 21.0 195.5 84.71 1.45%Sand-Slime Tailing 0.059 119.0 1.28 0.57 0.71 1 1.15 24.097 334.94 29.62 29 1.54% 2.4 47% 1.87 0.00 1.87 0 0.86 0.06 0.95 1.0 0.047 40.69 70.30 0.100 2.11 0.91 0.31 0.80 1.04 1.0 0.038 2.51 74.48 0.118 3.59 2.85 2 1.149648 25.5 2.4413 29.616
22.309 5587.32 25.0 0.216 23.6 231.9 100.47 0.86%Sand-Slime Tailing 0.059 119.0 1.29 0.57 0.72 1 1.14 26.878 373.60 33.13 33 0.91% 2.3 47% 1.88 0.00 1.88 0 0.86 0.06 0.95 1.0 0.047 41.92 75.06 0.106 2.25 0.90 0.33 0.80 1.04 1.0 0.038 1.88 62.32 0.103 3.09 2.67 2 1.140343 28.528 2.7313 33.134
22.473 5587.16 25.7 0.237 24.6 172.5 74.75 0.92%Sand-Slime Tailing 0.059 119.0 1.30 0.58 0.72 1 1.13 27.896 387.75 33.82 34 0.97% 2.3 47% 1.89 0.00 1.89 0 0.86 0.06 0.95 1.0 0.047 42.16 75.98 0.107 2.28 0.90 0.34 0.80 1.04 1.0 0.038 1.90 64.40 0.105 3.15 2.71 2 1.134432 29.117 2.7877 33.818
22.638 5586.99 25.4 0.261 24.2 200.2 86.77 1.03%Sand-Slime Tailing 0.059 119.0 1.31 0.58 0.72 1 1.13 27.284 379.24 33.33 33 1.08% 2.3 47% 1.90 0.00 1.90 0 0.85 0.06 0.95 1.0 0.047 41.99 75.32 0.106 2.26 0.90 0.33 0.80 1.03 1.0 0.038 2.01 66.86 0.108 3.22 2.74 2 1.129763 28.696 2.7474 33.329
22.802 5586.83 25.6 0.229 24.5 184.7 80.05 0.89%Sand-Slime Tailing 0.059 119.0 1.32 0.59 0.73 1 1.12 27.506 382.34 33.45 33 0.94% 2.3 47% 1.91 0.00 1.91 0 0.85 0.06 0.95 1.0 0.047 42.03 75.49 0.107 2.27 0.90 0.33 0.80 1.03 1.0 0.038 1.90 63.56 0.104 3.09 2.68 2 1.124545 28.803 2.7576 33.453
22.966 5586.66 28.5 0.145 27.4 181.5 78.63 0.51%Sand-Slime Tailing 0.059 119.0 1.33 0.59 0.73 1 1.12 30.592 425.22 37.00 37 0.53% 2.1 47% 1.92 0.00 1.92 0 0.85 0.06 0.95 1.0 0.047 43.28 80.28 0.113 2.42 0.90 0.35 0.80 1.03 1.0 0.038 1.50 55.48 0.096 2.84 2.63 2 1.116484 31.856 3.0499 36.999
23.130 5586.50 30.4 0.223 29.5 150.3 65.13 0.73%Sand-Slime Tailing 0.059 119.0 1.33 0.60 0.74 1 1.11 32.742 455.12 39.24 39 0.77% 2.2 47% 1.93 0.00 1.93 0 0.85 0.06 0.95 1.0 0.047 44.06 83.30 0.117 2.51 0.90 0.36 0.80 1.03 1.0 0.038 1.61 63.15 0.103 3.05 2.78 2 1.109913 33.784 3.2345 39.238
23.294 5586.34 35.2 0.314 34.0 190.1 82.37 0.89%Sand-Slime Tailing 0.059 119.0 1.34 0.60 0.74 1 1.10 37.465 520.76 45.03 46 0.93% 2.2 47% 1.94 0.00 1.94 0 0.85 0.07 0.94 1.0 0.046 46.09 91.13 0.129 2.77 0.90 0.39 0.80 1.03 1.0 0.038 1.59 71.48 0.114 3.34 3.06 2 1.101255 38.772 3.712 45.031
23.458 5586.17 38.3 0.271 37.3 170.9 74.04 0.71%Sand Tailings 0.062 123.5 1.35 0.61 0.75 1 1.09 40.792 567.01 48.73 49 0.73% 2.1 18% 1.95 0.00 1.95 0 0.85 0.07 0.94 1.0 0.046 34.55 83.28 0.117 2.54 0.89 0.40 0.80 1.03 1.0 0.038 1.42 69.29 0.111 3.23 2.88 2 1.094205 41.959 4.0172 48.733
23.622 5586.01 38.4 0.271 37.3 171.7 74.40 0.71%Sand Tailings 0.062 123.5 1.36 0.61 0.75 1 1.09 40.621 564.64 48.54 49 0.73% 2.1 18% 1.96 0.00 1.96 0 0.85 0.07 0.94 1.0 0.046 34.50 83.03 0.117 2.53 0.89 0.40 0.80 1.03 1.0 0.038 1.43 69.22 0.111 3.22 2.87 2 1.089628 41.789 4.0009 48.536
23.786 5585.84 41.4 0.271 40.3 174.7 75.68 0.66%Sand Tailings 0.062 123.5 1.37 0.62 0.76 1 1.08 43.621 606.34 52.04 53 0.68% 2.0 18% 1.97 0.00 1.97 0 0.85 0.07 0.94 1.0 0.046 35.39 87.43 0.123 2.68 0.89 0.42 0.79 1.03 1.0 0.038 1.36 70.53 0.113 3.25 2.96 2 1.083221 44.802 4.2894 52.035
Liquef_SeismicSettle_30Aug2015.xls Page 28 of 36
Energy Fuels Resources (USA) Inc.
White Mesa MillLiquefaction Analyses
Data File: 13-52106_SP3-4N-BSC-CPT 5606.00 Water surface elevation during CPT investigation (ft5608.70 Ground Surface Elevation at time of CPT (ft amsl)Location: White Mesa 2013 CPT Investigation 0.15 5600.42 Water surface elevation at t0 (ft amsl)5623.35 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl)
..\..\..\6.2.3 Field Data\2013 Field Investigation\Conetec Dat 5.5 5583.71 Water surface elevation at t1 (ft amsl) 0.50 Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after pla ###### 5623.1 5622.85 0.50 0.055 110 0.028 0.014 0.00 0.00 0.028 0.014
Tailings Sands 1.69 5578.71 Water surface elevation at t2 (ft amsl)3.50 Thickness of Water Storage/Rooting Zone (ft)###### 5621.1 5619.35 3.50 0.054 107 0.215 0.121 0.00 0.00 0.215 0.121
Tailings Sand-Slimes 3.50 Thickness of High Compaction Layer (ft)###### 5617.6 5615.85 3.50 0.060 120 0.424 0.320 0.00 0.00 0.424 0.320
Tailings Slimes 1.44 7.15 Thickness of Random/Platform Fill on on top of existing interim cover (ft) ###### 5612.28 5608.70 7.15 0.050 101 0.784 0.604 0.00 0.00 0.784 0.604
Interim Cover 0.47 1565.99 Additional Stress due to Final Cover Placement, ΔσFC (psf)
Cells Requiring User Input/Manipulation 2.21 2.21 7.51 5578.71 Elevation of bottom of tailings (liner) (ft amsl)
rd Cσ Kσ Ka rd Dr f Kσ Ka Avg CN qc1 qc1 qc1N
(ft) (ft amsl) TSF TSF TSF (ft) PSI (%) (tcf) (pcf) (tsf)(tsf)(tsf) 1=Yes TSF MPa % (tsf)(tsf)(tsf) 1=Yes FoS TSF MPa
0=No 0=No
0.164 5608.54 29.3 0.127 29.3 1.0 0.44 0.43%Interim Cover 0.050 100.7 0.01 0.00 0.01 0 1.70 49.810 692.36 57.86 3546 0.43% 0.9 51% 0.79 0.00 0.79 0 1.00 0.08 1.01 1.0 0.058 50.63 108.49 0.157 2.70 0.97 0.44 0.78 2.77 1.0 0.015 1.00 57.86 0.098 239.99 121.34 2 1.7 49.821 4.7698 57.864
0.328 5608.37 57.0 0.266 57.0 1.3 0.55 0.47%Interim Cover 0.050 100.7 0.02 0.00 0.02 0 1.70 96.951 1347.62 112.62 3451 0.47% 0.9 51% 0.80 0.00 0.80 0 1.00 0.12 1.01 1.0 0.058 69.84 182.46 0.578 9.92 0.97 0.61 0.69 3.36 1.0 0.013 1.00 112.62 0.213 260.65 135.29 2 1.7 96.964 9.2834 112.618
0.492 5608.21 65.8 0.294 65.8 3.7 1.58 0.45%Interim Cover 0.050 100.7 0.02 0.00 0.02 0 1.70 111.894 1555.33 130.00 2656 0.45% 0.9 51% 0.81 0.00 0.81 0 1.00 0.14 1.01 1.0 0.058 75.94 205.95 1.000 17.15 0.96 0.66 0.67 3.21 1.0 0.013 1.00 130.00 0.284 232.24 124.69 2 1.7 111.93 10.716 130.003
0.656 5608.04 65.5 0.343 65.4 1.6 0.71 0.52%Interim Cover 0.050 100.7 0.03 0.00 0.03 0 1.70 111.248 1546.35 129.23 1980 0.52% 1.0 51% 0.82 0.00 0.82 0 1.00 0.13 1.01 1.0 0.058 75.67 204.90 1.000 17.17 0.96 0.66 0.67 2.92 1.0 0.015 1.00 129.23 0.281 172.02 94.60 2 1.7 111.27 10.653 129.228
0.820 5607.88 64.9 0.350 64.9 2.1 0.89 0.54%Interim Cover 0.050 100.7 0.04 0.00 0.04 0 1.70 110.279 1532.88 128.11 1570 0.54% 1.0 51% 0.82 0.00 0.82 0 1.00 0.13 1.01 1.0 0.058 75.28 203.39 1.000 17.20 0.96 0.65 0.67 2.70 1.0 0.016 1.00 128.11 0.276 135.13 76.17 2 1.7 110.3 10.56 128.108
0.984 5607.72 63.6 0.317 63.6 -0.1 -0.04 0.50%Interim Cover 0.050 100.7 0.05 0.00 0.05 0 1.70 108.103 1502.63 125.55 1282 0.50% 1.0 51% 0.83 0.00 0.83 0 1.00 0.13 1.00 1.0 0.058 74.38 199.94 1.000 17.22 0.96 0.65 0.68 2.52 1.0 0.017 1.00 125.55 0.264 107.97 62.60 2 1.7 108.1 10.35 125.554
1.148 5607.55 65.1 0.361 65.1 0.3 0.12 0.55%Interim Cover 0.050 100.7 0.06 0.00 0.06 0 1.70 110.704 1538.79 128.58 1125 0.55% 1.1 51% 0.84 0.00 0.84 0 1.00 0.13 1.00 1.0 0.058 75.44 204.02 1.000 17.24 0.96 0.65 0.67 2.42 1.0 0.018 1.00 128.58 0.278 97.36 57.30 2 1.7 110.71 10.599 128.579
1.312 5607.39 54.3 0.552 54.3 0.6 0.24 1.02%Interim Cover 0.050 100.7 0.07 0.00 0.07 0 1.70 92.293 1282.87 107.20 820 1.02% 1.3 51% 0.85 0.00 0.85 0 1.00 0.11 1.00 1.0 0.058 67.94 175.14 0.466 8.04 0.96 0.60 0.70 2.15 1.0 0.020 1.00 107.20 0.195 59.71 33.88 2 1.7 92.299 8.8367 107.200
1.476 5607.22 52.5 0.448 52.5 1.4 0.61 0.85%Interim Cover 0.050 100.7 0.07 0.00 0.07 0 1.70 89.250 1240.58 103.68 705 0.85% 1.3 51% 0.86 0.00 0.86 0 1.00 0.11 1.00 1.0 0.058 66.70 170.38 0.411 7.11 0.96 0.59 0.71 2.05 1.0 0.021 1.00 103.68 0.184 50.12 28.61 2 1.7 89.265 8.5462 103.676
1.640 5607.06 62.6 0.320 62.6 0.2 0.10 0.51%Interim Cover 0.050 100.7 0.08 0.00 0.08 0 1.70 106.369 1478.53 123.54 756 0.51% 1.1 51% 0.87 0.00 0.87 0 1.00 0.13 1.00 1.0 0.058 73.68 197.22 1.000 17.31 0.96 0.64 0.68 2.12 1.0 0.020 1.00 123.54 0.255 62.75 40.03 2 1.7 106.37 10.184 123.544
1.804 5606.90 50.3 0.452 50.3 0.5 0.20 0.90%Interim Cover 0.050 100.7 0.09 0.00 0.09 0 1.70 85.459 1187.88 99.26 552 0.90% 1.4 51% 0.87 0.00 0.87 0 1.00 0.11 1.00 1.0 0.058 65.15 164.42 0.358 6.20 0.96 0.58 0.71 1.91 1.0 0.022 1.00 99.26 0.171 38.20 22.20 2 1.7 85.464 8.1823 99.261
1.968 5606.73 47.8 0.549 47.8 1.6 0.68 1.15%Interim Cover 0.050 100.7 0.10 0.00 0.10 0 1.70 81.243 1129.28 94.38 481 1.15% 1.5 51% 0.88 0.00 0.88 0 1.00 0.10 1.00 1.0 0.058 63.44 157.82 0.312 5.42 0.96 0.56 0.72 1.83 1.0 0.023 1.00 94.38 0.158 32.42 18.92 2 1.7 81.26 7.7798 94.378
2.133 5606.57 63.2 0.574 63.2 4.1 1.77 0.91%Interim Cover 0.050 100.7 0.11 0.00 0.11 0 1.70 107.355 1492.23 124.74 587 0.91% 1.4 51% 0.89 0.00 0.89 0 1.00 0.13 1.00 1.0 0.057 74.09 198.83 1.000 17.40 0.96 0.64 0.68 1.96 1.0 0.022 1.00 124.74 0.260 49.30 33.35 2 1.7 107.4 10.282 124.737
2.297 5606.40 106.2 0.582 106.2 6.9 2.99 0.55%Interim Cover 0.050 100.7 0.12 0.00 0.12 0 1.70 180.489 2508.80 209.71 917 0.55% 1.1 51% 0.90 0.00 0.90 0 1.00 0.30 0.99 1.0 0.057 ##### 313.63 1.000 17.56 0.96 0.84 0.60 2.23 1.0 0.019 1.00 209.71 1.000 175.79 96.68 2 1.7 180.56 17.287 209.712
2.461 5606.24 97.4 0.552 97.4 1.7 0.72 0.57%Interim Cover 0.050 100.7 0.12 0.00 0.12 0 1.70 165.546 2301.09 192.29 785 0.57% 1.1 51% 0.91 0.00 0.91 0 1.00 0.24 0.99 1.0 0.057 97.80 290.09 1.000 17.58 0.96 0.80 0.60 2.17 1.0 0.019 1.00 192.29 1.000 164.14 90.86 2 1.7 165.56 15.851 192.292
2.625 5606.08 86.1 0.510 86.1 0.3 0.11 0.59%Interim Cover 0.050 100.7 0.13 0.00 0.13 0 1.70 146.370 2034.54 170.00 650 0.59% 1.2 51% 0.92 0.00 0.92 0 1.00 0.19 0.99 1.0 0.057 89.98 259.98 1.000 17.58 0.96 0.75 0.62 2.02 1.0 0.021 1.00 170.00 1.000 153.94 85.76 2 1.7 146.37 14.014 170.003
2.789 5605.91 76.9 0.485 76.9 0.2 0.09 0.63%Interim Cover 0.050 100.7 0.14 0.00 0.14 1 1.70 130.764 1817.62 151.88 558 0.63% 1.3 51% 0.92 0.00 0.92 0 0.99 0.16 0.99 1.0 0.057 83.62 235.50 1.000 17.59 0.96 0.71 0.64 1.92 1.0 0.022 1.00 151.88 0.406 60.00 38.79 2 1.7 130.77 12.52 151.877
2.953 5605.75 71.5 0.471 71.5 0.3 0.11 0.66%Interim Cover 0.050 100.7 0.15 0.01 0.14 1 1.70 121.567 1689.78 141.20 507 0.66% 1.3 51% 0.93 0.00 0.93 0 0.99 0.15 0.99 1.0 0.057 79.87 221.07 1.000 17.61 0.96 0.69 0.66 1.86 1.0 0.023 1.00 141.20 0.342 49.43 33.52 2 1.7 121.57 11.639 141.196
3.117 5605.58 59.8 0.416 59.8 -0.4 -0.18 0.70%Interim Cover 0.050 100.7 0.16 0.01 0.14 1 1.70 101.728 1414.02 118.15 415 0.70% 1.4 51% 0.94 0.00 0.94 0 0.99 0.12 0.99 1.0 0.057 71.78 189.93 0.749 13.18 0.96 0.63 0.69 1.75 1.0 0.024 1.00 118.15 0.233 33.02 23.10 2 1.7 101.72 9.739 118.146
3.281 5605.42 51.6 0.323 51.6 -0.5 -0.22 0.63%Sand Tailings 0.062 123.5 0.17 0.02 0.15 1 1.70 87.652 1218.36 101.80 345 0.63% 1.4 18% 0.95 0.00 0.95 0 0.99 0.11 0.99 1.0 0.057 48.11 149.91 0.271 4.77 0.96 0.58 0.71 1.67 1.0 0.025 1.00 101.80 0.178 24.37 14.57 2 1.7 87.647 8.3913 101.796
3.445 5605.26 44.7 0.266 44.7 -0.6 -0.26 0.60%Sand Tailings 0.062 123.5 0.18 0.02 0.15 1 1.70 75.956 1055.79 88.21 289 0.60% 1.4 18% 0.96 0.00 0.96 0 0.99 0.10 0.99 1.0 0.057 44.64 132.85 0.211 3.72 0.96 0.54 0.73 1.59 1.0 0.026 1.00 88.21 0.144 19.04 11.38 2 1.7 75.95 7.2714 88.211
3.609 5605.09 39.4 0.205 39.4 -0.5 -0.22 0.52%Sand Tailings 0.062 123.5 0.19 0.03 0.16 1 1.70 66.963 930.79 77.77 247 0.52% 1.4 18% 0.97 0.00 0.97 0 0.99 0.09 0.99 1.0 0.057 41.97 119.74 0.179 3.16 0.96 0.51 0.75 1.54 1.0 0.027 1.00 77.77 0.124 15.87 9.52 2 1.7 66.958 6.4105 77.767
3.773 5604.93 37.6 0.191 37.6 -0.5 -0.22 0.51%Sand Tailings 0.062 123.5 0.20 0.03 0.16 1 1.70 63.937 888.72 74.25 228 0.51% 1.4 18% 0.98 0.00 0.98 0 0.99 0.09 0.99 1.0 0.057 41.07 115.32 0.170 3.01 0.96 0.50 0.75 1.51 1.0 0.028 1.00 74.25 0.118 14.69 8.85 2 1.7 63.932 6.1208 74.253
3.937 5604.76 39.1 0.168 39.1 1.0 0.43 0.43%Sand Tailings 0.062 123.5 0.21 0.04 0.17 1 1.70 66.538 924.88 77.29 230 0.43% 1.4 18% 0.99 0.00 0.99 0 0.99 0.09 0.99 1.0 0.056 41.85 119.14 0.178 3.15 0.96 0.51 0.75 1.51 1.0 0.028 1.00 77.29 0.123 14.85 9.00 2 1.7 66.549 6.3714 77.292
4.101 5604.60 40.3 0.180 40.4 -0.4 -0.16 0.45%Sand Tailings 0.062 123.5 0.22 0.04 0.17 1 1.70 68.595 953.47 79.66 231 0.45% 1.4 18% 1.00 0.00 1.00 0 0.99 0.09 0.99 1.0 0.056 42.46 122.12 0.184 3.27 0.96 0.52 0.74 1.51 1.0 0.028 1.00 79.66 0.127 14.91 9.09 2 1.7 68.591 6.5669 79.665
4.265 5604.43 39.7 0.206 39.7 0.2 0.07 0.52%Sand Tailings 0.062 123.5 0.23 0.05 0.18 1 1.70 67.507 938.35 78.41 221 0.52% 1.5 18% 1.01 0.00 1.01 0 0.99 0.09 0.99 1.0 0.056 42.13 120.54 0.181 3.21 0.96 0.51 0.74 1.49 1.0 0.028 1.00 78.41 0.125 14.24 8.73 2 1.7 67.509 6.4633 78.407
4.429 5604.27 38.6 0.225 38.6 0.9 0.39 0.58%Sand Tailings 0.062 123.5 0.24 0.05 0.18 1 1.70 65.552 911.17 76.15 208 0.59% 1.5 18% 1.02 0.00 1.02 0 0.99 0.09 0.98 1.0 0.056 41.56 117.70 0.175 3.11 0.96 0.50 0.75 1.48 1.0 0.029 1.00 76.15 0.121 13.44 8.28 2 1.7 65.562 6.2769 76.146
4.593 5604.11 38.4 0.229 38.4 1.2 0.52 0.60%Sand Tailings 0.062 123.5 0.25 0.06 0.19 1 1.70 65.348 908.34 75.91 202 0.60% 1.5 18% 1.03 0.00 1.03 0 0.98 0.09 0.98 1.0 0.056 41.50 117.41 0.174 3.11 0.96 0.50 0.75 1.46 1.0 0.029 1.00 75.91 0.121 13.05 8.08 2 1.7 65.361 6.2576 75.912
4.757 5603.94 38.8 0.235 38.8 1.1 0.48 0.61%Sand Tailings 0.062 123.5 0.26 0.06 0.19 1 1.70 65.994 917.32 76.66 199 0.61% 1.5 18% 1.04 0.00 1.04 0 0.98 0.09 0.98 1.0 0.056 41.69 118.35 0.176 3.15 0.95 0.51 0.75 1.46 1.0 0.029 1.00 76.66 0.122 12.85 8.00 2 1.7 66.006 6.3194 76.662
4.921 5603.78 37.7 0.214 37.7 1.2 0.54 0.57%Sand Tailings 0.062 123.5 0.27 0.07 0.20 1 1.70 64.039 890.14 74.39 188 0.57% 1.5 18% 1.05 0.00 1.05 0 0.98 0.09 0.98 1.0 0.056 41.11 115.50 0.170 3.05 0.95 0.50 0.75 1.44 1.0 0.029 1.00 74.39 0.118 12.16 7.60 2 1.7 64.052 6.1324 74.393
5.085 5603.61 35.6 0.246 35.6 1.2 0.52 0.69%Sand Tailings 0.062 123.5 0.28 0.07 0.20 1 1.70 60.554 841.70 70.34 173 0.70% 1.6 18% 1.06 0.00 1.06 0 0.98 0.08 0.98 1.0 0.056 40.07 110.42 0.161 2.88 0.95 0.48 0.76 1.42 1.0 0.030 1.00 70.34 0.112 11.27 7.08 2 1.7 60.567 5.7986 70.344
5.249 5603.45 30.5 0.236 30.5 0.3 0.13 0.77%Sand-Slime Tailing 0.059 119.0 0.29 0.08 0.21 1 1.70 51.850 720.72 60.22 145 0.78% 1.7 47% 1.07 0.00 1.07 0 0.98 0.08 0.98 1.0 0.056 51.42 111.65 0.163 2.92 0.95 0.45 0.78 1.37 1.0 0.031 1.05 63.25 0.104 10.16 6.54 2 1.7 51.853 4.9644 60.224
5.413 5603.29 27.1 0.216 27.1 1.1 0.48 0.80%Sand-Slime Tailing 0.059 119.0 0.30 0.08 0.21 1 1.70 46.121 641.08 53.58 126 0.80% 1.8 47% 1.08 0.00 1.08 0 0.98 0.07 0.98 1.0 0.056 49.09 102.67 0.147 2.64 0.95 0.42 0.79 1.34 1.0 0.031 1.09 58.28 0.098 9.45 6.04 2 1.7 46.133 4.4167 53.580
5.577 5603.12 26.7 0.176 26.7 1.6 0.68 0.66%Sand-Slime Tailing 0.059 119.0 0.31 0.09 0.22 1 1.70 45.356 630.45 52.70 121 0.67% 1.7 47% 1.09 0.00 1.09 0 0.98 0.07 0.98 1.0 0.056 48.78 101.48 0.145 2.61 0.95 0.42 0.79 1.33 1.0 0.032 1.06 55.98 0.096 9.06 5.83 2 1.7 45.373 4.344 52.698
5.741 5602.96 25.2 0.169 25.2 1.8 0.76 0.67%Sand-Slime Tailing 0.059 119.0 0.32 0.09 0.22 1 1.70 42.857 595.71 49.80 112 0.68% 1.8 47% 1.10 0.00 1.10 0 0.98 0.07 0.98 1.0 0.056 47.77 97.56 0.139 2.49 0.95 0.41 0.80 1.32 1.0 0.032 1.08 53.98 0.095 8.71 5.60 2 1.7 42.876 4.1049 49.798
5.905 5602.79 22.4 0.156 22.3 1.8 0.78 0.70%Sand-Slime Tailing 0.059 119.0 0.33 0.10 0.23 1 1.70 37.978 527.89 44.13 97 0.71% 1.8 47% 1.11 0.00 1.11 0 0.98 0.07 0.98 1.0 0.056 45.78 89.91 0.127 2.28 0.95 0.38 0.80 1.31 1.0 0.032 1.13 49.81 0.091 8.26 5.27 2 1.7 37.997 3.6379 44.131
6.069 5602.63 20.9 0.135 20.9 2.6 1.11 0.64%Sand-Slime Tailing 0.059 119.0 0.34 0.11 0.23 1 1.70 35.581 494.58 41.36 89 0.66% 1.8 47% 1.12 0.00 1.12 0 0.98 0.07 0.98 1.0 0.055 44.81 86.16 0.121 2.19 0.95 0.37 0.80 1.30 1.0 0.032 1.14 47.05 0.089 7.89 5.04 2 1.7 35.608 3.4091 41.357
6.234 5602.47 20.2 0.127 20.2 2.1 0.93 0.63%Sand-Slime Tailing 0.059 119.0 0.35 0.11 0.24 1 1.70 34.289 476.62 39.85 84 0.64% 1.9 47% 1.13 0.00 1.13 0 0.98 0.06 0.98 1.0 0.055 44.28 84.13 0.118 2.14 0.95 0.36 0.80 1.29 1.0 0.032 1.15 45.83 0.088 7.65 4.89 2 1.7 34.312 3.285 39.851
6.398 5602.30 20.6 0.117 20.6 2.6 1.13 0.57%Sand-Slime Tailing 0.059 119.0 0.36 0.12 0.24 1 1.70 34.935 485.60 40.61 84 0.58% 1.8 47% 1.14 0.00 1.14 0 0.97 0.07 0.98 1.0 0.055 44.54 85.15 0.120 2.17 0.95 0.37 0.80 1.29 1.0 0.033 1.13 45.93 0.088 7.51 4.84 2 1.7 34.963 3.3473 40.607
6.562 5602.14 22.3 0.113 22.3 2.7 1.16 0.51%Sand-Slime Tailing 0.059 119.0 0.37 0.12 0.25 1 1.70 37.859 526.24 44.00 89 0.52% 1.8 47% 1.15 0.00 1.15 0 0.97 0.07 0.98 1.0 0.055 45.73 89.74 0.127 2.29 0.95 0.38 0.80 1.28 1.0 0.033 1.09 48.16 0.090 7.53 4.91 2 1.7 37.887 3.6273 44.004
6.726 5601.97 22.1 0.120 22.1 2.6 1.14 0.54%Sand-Slime Tailing 0.059 119.0 0.38 0.13 0.25 1 1.70 37.621 522.93 43.73 87 0.55% 1.8 47% 1.16 0.00 1.16 0 0.97 0.07 0.98 1.0 0.055 45.64 89.36 0.126 2.29 0.95 0.38 0.80 1.28 1.0 0.033 1.11 48.64 0.091 7.43 4.86 2 1.7 37.649 3.6045 43.727
6.890 5601.81 21.1 0.125 21.1 3.5 1.52 0.59%Sand-Slime Tailing 0.059 119.0 0.39 0.13 0.26 1 1.70 35.785 497.41 41.61 81 0.60% 1.9 47% 1.17 0.00 1.17 0 0.97 0.07 0.98 1.0 0.055 44.89 86.50 0.122 2.21 0.95 0.37 0.80 1.28 1.0 0.033 1.15 47.80 0.090 7.24 4.73 2 1.7 35.822 3.4296 41.605
7.054 5601.65 19.4 0.130 19.3 4.1 1.77 0.67%Sand-Slime Tailing 0.059 119.0 0.40 0.14 0.26 1 1.70 32.861 456.77 38.22 73 0.69% 1.9 47% 1.18 0.00 1.18 0 0.97 0.06 0.98 1.0 0.055 43.70 81.92 0.115 2.10 0.95 0.36 0.80 1.27 1.0 0.033 1.21 46.28 0.089 7.01 4.55 2 1.7 32.904 3.1503 38.216
7.218 5601.48 18.3 0.128 18.3 4.2 1.81 0.70%Sand-Slime Tailing 0.059 119.0 0.41 0.14 0.26 1 1.70 31.025 431.25 36.09 68 0.72% 2.0 47% 1.19 0.00 1.19 0 0.97 0.06 0.98 1.0 0.055 42.96 79.04 0.111 2.03 0.95 0.35 0.80 1.27 1.0 0.033 1.25 45.19 0.088 6.82 4.42 2 1.7 31.069 2.9746 36.085
7.382 5601.32 17.3 0.127 17.3 4.7 2.05 0.73%Sand-Slime Tailing 0.059 119.0 0.42 0.15 0.27 1 1.70 29.393 408.56 34.20 63 0.75% 2.0 47% 1.20 0.00 1.20 0 0.97 0.06 0.98 1.0 0.055 42.29 76.49 0.108 1.97 0.95 0.34 0.80 1.26 1.0 0.033 1.30 44.41 0.087 6.66 4.31 2 1.7 29.443 2.8189 34.196
7.546 5601.15 16.0 0.118 16.0 4.7 2.05 0.74%Sand-Slime Tailing 0.059 119.0 0.42 0.15 0.27 1 1.70 27.234 378.55 31.69 57 0.76% 2.0 47% 1.21 0.00 1.21 0 0.97 0.06 0.98 1.0 0.055 41.42 73.10 0.104 1.89 0.95 0.33 0.80 1.26 1.0 0.033 1.35 42.74 0.086 6.44 4.17 2 1.7 27.284 2.6122 31.689
7.710 5600.99 15.9 0.100 15.8 4.8 2.10 0.63%Sand-Slime Tailing 0.059 119.0 0.43 0.16 0.28 1 1.70 26.894 373.83 31.30 55 0.65% 2.0 47% 1.22 0.00 1.22 0 0.97 0.06 0.98 1.0 0.055 41.28 72.57 0.103 1.88 0.95 0.32 0.80 1.25 1.0 0.033 1.32 41.16 0.084 6.24 4.06 2 1.7 26.945 2.5797 31.295
7.874 5600.83 14.1 0.079 14.0 5.5 2.40 0.56%Sand-Slime Tailing 0.059 119.0 0.44 0.16 0.28 1 1.70 23.868 331.77 27.79 48 0.58% 2.0 47% 1.23 0.00 1.23 0 0.96 0.06 0.98 1.0 0.055 40.05 67.84 0.097 1.77 0.95 0.30 0.80 1.25 1.0 0.033 1.36 37.67 0.081 5.93 3.85 2 1.7 23.927 2.2908 27.790
8.038 5600.66 12.3 0.079 12.3 7.0 3.05 0.64%Sand-Slime Tailing 0.059 119.0 0.45 0.17 0.29 1 1.70 20.842 289.70 24.29 41 0.67% 2.1 47% 1.24 0.00 1.24 0 0.96 0.06 0.98 1.0 0.055 38.82 63.12 0.091 1.67 0.95 0.28 0.80 1.25 1.0 0.034 1.51 36.66 0.081 5.77 3.72 2 1.7 20.917 2.0026 24.293
8.202 5600.50 10.1 0.079 10.1 7.8 3.40 0.78%Sand-Slime Tailing 0.059 119.0 0.46 0.17 0.29 1 1.70 17.153 238.43 20.02 33 0.82% 2.3 47% 1.25 0.00 1.25 0 0.96 0.05 0.98 1.0 0.055 37.32 57.34 0.085 1.56 0.95 0.26 0.80 1.24 1.0 0.034 1.81 36.27 0.080 5.66 3.61 2 1.7 17.236 1.6502 20.019
8.366 5600.33 10.5 0.074 10.5 7.9 3.42 0.70%Sand-Slime Tailing 0.059 119.0 0.47 0.18 0.30 1 1.70 17.782 247.17 20.75 34 0.74% 2.2 47% 1.26 0.00 1.26 0 0.96 0.05 0.98 1.0 0.054 37.58 58.33 0.086 1.58 0.95 0.26 0.80 1.24 1.0 0.034 1.73 35.90 0.080 5.55 3.57 2 1.7 17.866 1.7105 20.750
8.530 5600.17 11.2 0.094 11.1 7.1 3.07 0.84%Sand-Slime Tailing 0.059 119.0 0.48 0.18 0.30 1 1.70 18.887 262.53 22.02 35 0.88% 2.2 47% 1.27 0.00 1.27 0 0.96 0.05 0.98 1.0 0.054 38.03 60.05 0.088 1.62 0.95 0.27 0.80 1.23 1.0 0.034 1.79 39.40 0.083 5.67 3.64 2 1.7 18.962 1.8154 22.024
8.694 5600.01 9.4 0.107 9.4 7.9 3.44 1.13%Sand-Slime Tailing 0.059 119.0 0.49 0.19 0.31 1 1.70 15.946 221.65 18.62 29 1.20% 2.4 47% 1.28 0.00 1.28 0 0.96 0.05 0.98 1.0 0.054 36.83 55.45 0.083 1.53 0.95 0.25 0.80 1.23 1.0 0.034 2.27 42.18 0.085 5.74 3.63 2 1.7 16.03 1.5347 18.618
8.858 5599.84 8.8 0.081 8.7 12.4 5.35 0.92%Sand-Slime Tailing 0.059 119.0 0.50 0.19 0.31 1 1.70 14.756 205.11 17.29 27 0.98% 2.4 47% 1.29 0.00 1.29 0 0.96 0.05 0.98 1.0 0.054 36.37 53.66 0.081 1.49 0.95 0.24 0.80 1.23 1.0 0.034 2.22 38.45 0.082 5.45 3.47 2 1.7 14.887 1.4253 17.290
9.022 5599.68 11.1 0.076 11.1 5.6 2.43 0.68%Sand-Slime Tailing 0.059 119.0 0.51 0.20 0.32 1 1.70 18.870 262.29 21.99 34 0.72% 2.2 47% 1.30 0.00 1.30 0 0.96 0.05 0.98 1.0 0.054 38.01 60.00 0.088 1.62 0.94 0.27 0.80 1.22 1.0 0.034 1.72 37.76 0.081 5.34 3.48 2 1.7 18.929 1.8123 21.985
9.186 5599.51 9.6 0.061 9.6 2.1 0.91 0.63%Sand-Slime Tailing 0.059 119.0 0.52 0.20 0.32 1 1.70 16.337 227.08 19.00 28 0.67% 2.3 47% 1.31 0.00 1.31 0 0.96 0.05 0.98 1.0 0.054 36.97 55.97 0.084 1.54 0.94 0.25 0.80 1.22 1.0 0.034 1.86 35.35 0.079 5.13 3.34 2 1.7 16.359 1.5662 19.000
9.350 5599.35 12.2 0.050 12.2 2.4 1.04 0.41%Sand-Slime Tailing 0.059 119.0 0.53 0.21 0.32 1 1.70 20.672 287.34 24.04 36 0.43% 2.1 47% 1.32 0.00 1.32 0 0.96 0.06 0.98 1.0 0.054 38.73 62.77 0.091 1.69 0.94 0.28 0.80 1.22 1.0 0.034 1.45 34.83 0.079 5.03 3.36 2 1.7 20.697 1.9816 24.039
9.514 5599.19 10.4 0.053 10.4 2.6 1.12 0.51%Sand-Slime Tailing 0.059 119.0 0.54 0.21 0.33 1 1.70 17.646 245.28 20.53 30 0.54% 2.2 47% 1.32 0.00 1.32 0 0.95 0.05 0.98 1.0 0.054 37.50 58.03 0.086 1.59 0.94 0.26 0.80 1.21 1.0 0.034 1.69 34.67 0.079 4.96 3.27 2 1.7 17.673 1.6921 20.527
9.678 5599.02 8.2 0.072 8.2 6.3 2.75 0.87%Sand-Slime Tailing 0.059 119.0 0.55 0.22 0.33 1 1.70 13.957 194.00 16.29 23 0.94% 2.4 47% 1.33 0.00 1.33 0 0.95 0.05 0.98 1.0 0.054 36.01 52.30 0.080 1.48 0.94 0.23 0.80 1.21 1.0 0.034 2.40 39.07 0.083 5.12 3.30 2 1.7 14.024 1.3427 16.288
9.842 5598.86 6.7 0.056 6.7 7.3 3.18 0.83%Slime Tailings 0.057 113.1 0.56 0.22 0.34 1 1.70 11.356 157.85 13.28 18 0.91% 2.5 71% 1.34 0.00 1.34 0 0.95 0.05 0.98 1.0 0.054 34.71 47.99 0.076 1.40 0.94 0.21 0.80 1.21 1.0 0.034 2.79 37.02 0.081 4.95 3.18 2 1.7 11.434 1.0947 13.280
10.006 5598.69 5.1 0.106 5.0 9.4 4.07 2.09%Slime Tailings 0.057 113.1 0.57 0.23 0.34 1 1.70 8.534 118.62 10.03 13 2.35% 2.8 71% 1.35 0.00 1.35 0 0.95 0.05 0.98 1.0 0.054 33.58 43.61 0.072 1.33 0.94 0.18 0.80 1.20 1.0 0.035 5.12 51.34 0.093 5.60 3.47 2 1.7 8.6337 0.8266 10.027
10.170 5598.53 3.9 0.092 3.9 4.9 2.13 2.36%Slime Tailings 0.057 113.1 0.58 0.23 0.35 1 1.70 6.562 91.21 7.68 10 2.78% 3.0 71% 1.36 0.00 1.36 0 0.95 0.04 0.98 1.0 0.054 32.76 40.44 0.069 1.28 0.94 0.16 0.80 1.20 1.0 0.035 6.68 51.34 0.093 5.54 3.41 2 1.7 6.6142 0.6332 7.682
10.335 5598.37 5.5 0.171 5.5 6.9 2.99 3.11%Slime Tailings 0.057 113.1 0.59 0.24 0.35 1 1.70 9.265 128.78 10.85 14 3.49% 2.9 71% 1.37 0.00 1.37 0 0.95 0.05 0.98 1.0 0.054 33.86 44.71 0.073 1.35 0.94 0.19 0.80 1.20 1.0 0.035 5.87 63.62 0.104 6.15 3.75 2 1.7 9.3382 0.894 10.846
10.499 5598.20 10.4 0.222 10.4 3.4 1.48 2.14%Slime Tailings 0.057 113.1 0.60 0.24 0.35 1 1.70 17.612 244.81 20.50 28 2.27% 2.6 71% 1.38 0.00 1.38 0 0.95 0.05 0.98 1.0 0.053 37.23 57.72 0.085 1.60 0.94 0.26 0.80 1.19 1.0 0.035 3.14 64.46 0.105 6.13 3.87 2 1.7 17.648 1.6896 20.497
10.663 5598.04 4.3 0.241 4.2 13.2 5.72 5.67%Slime Tailings 0.057 113.1 0.61 0.25 0.36 1 1.70 7.089 98.54 8.40 10 6.61% 3.2 71% 1.39 0.00 1.39 0 0.95 0.04 0.98 1.0 0.054 33.01 41.41 0.070 1.30 0.94 0.17 0.80 1.19 1.0 0.035 9.23 77.49 0.123 7.13 4.21 2 1.7 7.229 0.6921 8.396
10.827 5597.87 5.7 0.239 5.6 23.2 10.07 4.17%Slime Tailings 0.057 113.1 0.62 0.25 0.36 1 1.70 9.486 131.86 11.30 14 4.68% 3.0 71% 1.40 0.00 1.40 0 0.95 0.05 0.98 1.0 0.053 34.02 45.33 0.073 1.37 0.94 0.19 0.80 1.19 1.0 0.035 6.68 75.46 0.120 6.86 4.11 2 1.7 9.7325 0.9318 11.304
10.991 5597.71 11.2 0.225 11.1 15.4 6.69 2.01%Slime Tailings 0.057 113.1 0.63 0.26 0.37 1 1.70 18.904 262.77 22.15 29 2.12% 2.5 71% 1.41 0.00 1.41 0 0.94 0.05 0.97 1.0 0.053 37.80 59.95 0.088 1.65 0.94 0.27 0.80 1.19 1.0 0.035 2.96 65.57 0.106 6.01 3.83 2 1.7 19.068 1.8256 22.146
11.155 5597.55 3.0 0.253 2.9 12.9 5.59 8.49%Slime Tailings 0.057 113.1 0.64 0.26 0.37 1 1.70 4.930 68.53 5.88 6 10.79% 3.5 71% 1.42 0.00 1.42 0 0.94 0.04 0.98 1.0 0.053 32.14 38.02 0.067 1.26 0.94 0.14 0.80 1.18 1.0 0.035 13.96 82.18 0.132 7.36 4.31 2 1.7 5.0669 0.4851 5.885
11.319 5597.38 2.8 0.251 2.7 7.9 3.44 9.10%Slime Tailings 0.057 113.1 0.64 0.27 0.38 1 1.70 4.607 64.04 5.45 6 11.87% 3.6 71% 1.43 0.00 1.43 0 0.94 0.04 0.98 1.0 0.053 31.99 37.43 0.067 1.25 0.94 0.13 0.80 1.18 1.0 0.035 15.18 82.68 0.133 7.34 4.29 2 1.7 4.6912 0.4491 5.448
11.483 5597.22 12.0 0.174 12.0 3.9 1.69 1.45%Sand-Slime Tailing 0.059 119.0 0.65 0.27 0.38 1 1.70 20.417 283.80 23.76 30 1.53% 2.4 47% 1.44 0.00 1.44 0 0.94 0.05 0.97 1.0 0.053 38.63 62.40 0.091 1.71 0.94 0.28 0.80 1.18 1.0 0.035 2.48 58.88 0.099 5.41 3.56 2 1.7 20.458 1.9587 23.761
11.647 5597.05 28.9 0.523 28.8 10.2 4.41 1.81%Sand-Slime Tailing 0.059 119.0 0.66 0.28 0.38 1 1.65 47.502 660.28 55.29 73 1.85% 2.2 47% 1.45 0.00 1.45 0 0.94 0.07 0.96 1.0 0.052 49.69 104.99 0.151 2.89 0.94 0.43 0.79 1.19 1.0 0.035 1.64 90.56 0.149 8.06 5.47 2 1.647094 47.607 4.5579 55.293
11.811 5596.89 85.4 0.752 85.2 32.0 13.87 0.88%Sand Tailings 0.062 123.5 0.67 0.28 0.39 1 1.40 119.039 1654.64 138.58 217 0.89% 1.6 18% 1.46 0.00 1.46 0 0.94 0.14 0.92 1.0 0.050 57.52 196.10 0.958 19.11 0.94 0.68 0.66 1.31 1.0 0.032 1.00 138.58 0.328 17.48 18.30 2 1.397659 119.32 11.423 138.580
11.975 5596.73 141.3 0.619 140.6 118.3 51.27 0.44%Sand Tailings 0.062 123.5 0.68 0.29 0.39 1 1.28 179.877 2500.28 210.01 356 0.44% 1.3 18% 1.47 0.00 1.47 0 0.94 0.30 0.84 1.0 0.046 75.78 285.79 1.000 21.92 0.94 0.84 0.60 1.37 1.0 0.030 1.00 210.01 1.000 52.72 37.32 2 1.279714 180.82 17.312 210.014
Scaling Factor for stress ration, rm
Volumetric Strain Ratio for Site-Specific Design Eart
Equiv. Number of Uniform Strain Cycles, N
Youd et al. (2001)
CSR
M=7.5,
s'v=1atm
0.15
Earthquake Moment Magnitude, M: 5.5
Magnitude Scaling Factor, MSF:
Equil Pore
Pressure at time of
Conditions at t1 Liquefaction Triggering Analyses Idriss & Boulanger (2008)Equil
Pore
Pressure
at t1CN qc1 qc1 qc1N
Normalized Cone
Penetration Resistance, Qt
Normalized Friction
Ratio, Fr (%)
Total
Stress at
t1 Liquefiable?
1=Yes
2=No
Cyclic Stress RatioEffective
Stress at
t1
Saturated
at t1
Idriss & Boulanger (2008)
Idriss and Boulanger (2008)
Max. Horiz. Acceleration, Amax/g:
Earthquake Moment Magnitude, M:
Magnitude Scaling Factor, MSF:
WHITE MESA TAILINGS REPOSITORY LIQUEFACTION AND SEISMIC SETTLEMENT ANALYSES - 3-4N Elev. at
Top of Layer (ft)
Elev. At
Midpoint of Layer (ft)
Bottom
of Layer (ft)
Thickness of Layer (ft)
CSR
M=7.5,
s'v=1atm
Kc
High Compaction Layer
Platform/Random Fill Layer
Pw (u2)Pw (u2)
2013 CPT Data from ConeTec CPT Data Interpretations
fs/qt
Material Type (as determined
by fines
Unit Weight Unit Weight
Total Stress
at time of CPT
Depth
at time of CPT Elevation qt fs qc
Effective Stress at
time of CPT
Saturated
at time of CPT
Type Index, Ic FC
Youd, et al (2001)
Max. Horiz. Acceleration, Amax/g:
Stress at
Bottom of Layer (tsf)
Stress at
Midpoint of Layer (tsf)FINAL COVER
Erosion Protection Layer
Water Storage/Rooting Zone Layer
qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Equil Pore
Pressure at Midpoint of Layer (tsf)
Unit Weight (tcf)
Unit Weight (pcf)
Stress at
Bottom of Layer (tsf)
Stress at
Midpoint of Layer (tsf)
Pressure
at Bottom of Layer (tsf)
Cyclic Resistance Ratio
FoS
Cyclic Stress Ratio
FoS
∆qc1n qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Liquef_SeismicSettle_30Aug2015.xls Page 29 of 36
Energy Fuels Resources (USA) Inc.
White Mesa MillLiquefaction Analyses
Data File: 13-52106_SP3-4N-BSC-CPT 5606.00 Water surface elevation during CPT investigation (ft5608.70 Ground Surface Elevation at time of CPT (ft amsl)Location: White Mesa 2013 CPT Investigation 0.15 5600.42 Water surface elevation at t0 (ft amsl)5623.35 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl)
..\..\..\6.2.3 Field Data\2013 Field Investigation\Conetec Dat 5.5 5583.71 Water surface elevation at t1 (ft amsl) 0.50 Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after pla ###### 5623.1 5622.85 0.50 0.055 110 0.028 0.014 0.00 0.00 0.028 0.014
Tailings Sands 1.69 5578.71 Water surface elevation at t2 (ft amsl)3.50 Thickness of Water Storage/Rooting Zone (ft)###### 5621.1 5619.35 3.50 0.054 107 0.215 0.121 0.00 0.00 0.215 0.121
Tailings Sand-Slimes 3.50 Thickness of High Compaction Layer (ft)###### 5617.6 5615.85 3.50 0.060 120 0.424 0.320 0.00 0.00 0.424 0.320
Tailings Slimes 1.44 7.15 Thickness of Random/Platform Fill on on top of existing interim cover (ft) ###### 5612.28 5608.70 7.15 0.050 101 0.784 0.604 0.00 0.00 0.784 0.604
Interim Cover 0.47 1565.99 Additional Stress due to Final Cover Placement, ΔσFC (psf)
Cells Requiring User Input/Manipulation 2.21 2.21 7.51 5578.71 Elevation of bottom of tailings (liner) (ft amsl)
rd Cσ Kσ Ka rd Dr f Kσ Ka Avg CN qc1 qc1 qc1N
(ft) (ft amsl) TSF TSF TSF (ft) PSI (%) (tcf) (pcf) (tsf)(tsf)(tsf) 1=Yes TSF MPa % (tsf)(tsf)(tsf) 1=Yes FoS TSF MPa
0=No 0=No
Scaling Factor for stress ration, rm
Volumetric Strain Ratio for Site-Specific Design Eart
Equiv. Number of Uniform Strain Cycles, N
Youd et al. (2001)
CSR
M=7.5,
s'v=1atm
0.15
Earthquake Moment Magnitude, M: 5.5
Magnitude Scaling Factor, MSF:
Equil Pore
Pressure at time of
Conditions at t1 Liquefaction Triggering Analyses Idriss & Boulanger (2008)Equil
Pore
Pressure
at t1CN qc1 qc1 qc1N
Normalized Cone
Penetration Resistance, Qt
Normalized Friction
Ratio, Fr (%)
Total
Stress at
t1 Liquefiable?
1=Yes
2=No
Cyclic Stress RatioEffective
Stress at
t1
Saturated
at t1
Idriss & Boulanger (2008)
Idriss and Boulanger (2008)
Max. Horiz. Acceleration, Amax/g:
Earthquake Moment Magnitude, M:
Magnitude Scaling Factor, MSF:
WHITE MESA TAILINGS REPOSITORY LIQUEFACTION AND SEISMIC SETTLEMENT ANALYSES - 3-4N Elev. at
Top of Layer (ft)
Elev. At
Midpoint of Layer (ft)
Bottom
of Layer (ft)
Thickness of Layer (ft)
CSR
M=7.5,
s'v=1atm
Kc
High Compaction Layer
Platform/Random Fill Layer
Pw (u2)Pw (u2)
2013 CPT Data from ConeTec CPT Data Interpretations
fs/qt
Material Type (as determined
by fines
Unit Weight Unit Weight
Total Stress
at time of CPT
Depth
at time of CPT Elevation qt fs qc
Effective Stress at
time of CPT
Saturated
at time of CPT
Type Index, Ic FC
Youd, et al (2001)
Max. Horiz. Acceleration, Amax/g:
Stress at
Bottom of Layer (tsf)
Stress at
Midpoint of Layer (tsf)FINAL COVER
Erosion Protection Layer
Water Storage/Rooting Zone Layer
qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Equil Pore
Pressure at Midpoint of Layer (tsf)
Unit Weight (tcf)
Unit Weight (pcf)
Stress at
Bottom of Layer (tsf)
Stress at
Midpoint of Layer (tsf)
Pressure
at Bottom of Layer (tsf)
Cyclic Resistance Ratio
FoS
Cyclic Stress Ratio
FoS
∆qc1n qc1n-cs
(CRR)
M=7.5,
s'v=1atm
12.139 5596.56 153.1 1.039 152.7 76.3 33.05 0.68%Sand Tailings 0.062 123.5 0.69 0.29 0.40 1 1.26 192.043 2669.40 223.74 381 0.68% 1.4 18% 1.48 0.00 1.48 0 0.94 0.30 0.84 1.0 0.045 79.29 303.03 1.000 22.05 0.94 0.86 0.60 1.36 1.0 0.030 1.00 223.74 1.000 52.09 37.07 2 1.257897 192.64 18.444 223.742
12.303 5596.40 126.4 0.970 126.3 17.7 7.67 0.77%Sand Tailings 0.062 123.5 0.70 0.30 0.40 1 1.30 163.560 2273.49 190.13 310 0.77% 1.5 18% 1.49 0.00 1.49 0 0.94 0.24 0.87 1.0 0.047 70.70 260.83 1.000 21.23 0.94 0.80 0.60 1.35 1.0 0.031 1.00 190.13 1.000 51.46 36.35 2 1.29522 163.7 15.673 190.132
12.467 5596.23 12.1 0.808 12.0 22.2 9.64 6.66%Slime Tailings 0.057 113.1 0.71 0.30 0.41 1 1.70 20.400 283.56 23.97 28 7.07% 2.9 71% 1.50 0.00 1.50 0 0.93 0.06 0.97 1.0 0.052 38.43 62.40 0.091 1.73 0.94 0.28 0.80 1.16 1.0 0.036 5.65 135.34 0.311 15.83 8.78 2 1.7 20.636 1.9757 23.967
12.631 5596.07 18.2 0.402 18.1 12.5 5.41 2.21%Sand-Slime Tailing 0.059 119.0 0.72 0.31 0.41 1 1.67 30.267 420.71 35.30 42 2.30% 2.4 47% 1.51 0.00 1.51 0 0.93 0.06 0.97 1.0 0.052 42.68 77.99 0.110 2.11 0.94 0.34 0.80 1.16 1.0 0.036 2.44 86.07 0.139 7.02 4.57 2 1.670343 30.397 2.9102 35.304
12.795 5595.90 26.5 0.286 26.5 1.9 0.81 1.08%Sand-Slime Tailing 0.059 119.0 0.73 0.31 0.42 1 1.59 42.092 585.08 48.91 62 1.11% 2.1 47% 1.52 0.00 1.52 0 0.93 0.07 0.96 1.0 0.052 47.45 96.36 0.137 2.64 0.94 0.40 0.80 1.16 1.0 0.036 1.46 71.51 0.114 5.69 4.16 2 1.59017 42.11 4.0317 48.909
12.959 5595.74 36.4 0.258 36.4 1.4 0.59 0.71%Sand Tailings 0.062 123.5 0.74 0.32 0.42 1 1.52 55.289 768.51 64.23 84 0.72% 1.9 18% 1.53 0.00 1.53 0 0.93 0.08 0.95 1.0 0.051 38.51 102.74 0.147 2.87 0.94 0.46 0.77 1.18 1.0 0.035 1.18 75.48 0.120 5.92 4.39 2 1.521009 55.302 5.2946 64.229
13.123 5595.58 11.0 0.376 10.9 16.2 7.02 3.43%Slime Tailings 0.057 113.1 0.75 0.33 0.43 1 1.70 18.462 256.62 21.64 24 3.68% 2.8 71% 1.54 0.00 1.54 0 0.93 0.05 0.97 1.0 0.052 37.62 59.27 0.087 1.67 0.94 0.27 0.80 1.15 1.0 0.036 4.38 94.82 0.159 7.78 4.73 2 1.7 18.634 1.784 21.642
13.287 5595.41 24.7 0.375 24.6 16.4 7.12 1.52%Sand-Slime Tailing 0.059 119.0 0.76 0.33 0.43 1 1.57 38.712 538.09 45.15 55 1.57% 2.2 47% 1.55 0.00 1.55 0 0.93 0.07 0.96 1.0 0.052 46.14 91.28 0.129 2.50 0.93 0.39 0.80 1.15 1.0 0.036 1.75 78.95 0.126 6.08 4.29 2 1.573002 38.873 3.7217 45.149
13.451 5595.25 8.9 0.177 8.8 15.2 6.59 1.99%Slime Tailings 0.057 113.1 0.77 0.34 0.44 1 1.70 14.960 207.94 17.56 19 2.18% 2.7 71% 1.55 0.00 1.55 0 0.93 0.05 0.97 1.0 0.052 36.20 53.77 0.081 1.56 0.93 0.24 0.80 1.15 1.0 0.036 3.97 69.67 0.111 5.34 3.45 2 1.7 15.121 1.4477 17.563
13.615 5595.08 3.6 0.140 3.4 36.3 15.72 3.88%Slime Tailings 0.057 113.1 0.78 0.34 0.44 1 1.69 5.708 79.34 7.07 6 4.95% 3.3 71% 1.56 0.00 1.56 0 0.93 0.04 0.97 1.0 0.052 32.55 39.62 0.068 1.31 0.93 0.15 0.80 1.14 1.0 0.036 10.41 73.64 0.117 5.56 3.43 2 1.688661 6.0901 0.5831 7.073
13.779 5594.92 4.3 0.102 4.0 46.1 19.97 2.37%Slime Tailings 0.057 113.1 0.79 0.35 0.44 1 1.68 6.739 93.67 8.39 8 2.90% 3.1 71% 1.57 0.00 1.57 0 0.92 0.04 0.97 1.0 0.052 33.01 41.40 0.070 1.34 0.93 0.17 0.80 1.14 1.0 0.036 7.60 63.70 0.104 4.89 3.12 2 1.676296 7.221 0.6913 8.387
13.943 5594.76 4.7 0.064 4.4 49.6 21.48 1.35%Slime Tailings 0.057 113.1 0.80 0.35 0.45 1 1.66 7.355 102.24 9.14 9 1.63% 2.9 71% 1.58 0.00 1.58 0 0.92 0.04 0.97 1.0 0.052 33.27 42.41 0.071 1.36 0.93 0.17 0.80 1.14 1.0 0.036 5.75 52.54 0.093 4.36 2.86 2 1.664136 7.8703 0.7535 9.141
14.107 5594.59 5.1 0.026 4.8 50.7 21.98 0.51%Slime Tailings 0.057 113.1 0.81 0.36 0.45 1 1.65 7.897 109.77 9.78 9 0.61% 2.7 71% 1.59 0.00 1.59 0 0.92 0.05 0.97 1.0 0.052 33.49 43.27 0.071 1.38 0.93 0.18 0.80 1.14 1.0 0.036 3.91 38.23 0.082 3.78 2.58 2 1.652174 8.4206 0.8062 9.780
14.271 5594.43 9.8 0.045 9.6 29.9 12.96 0.46%Sand-Slime Tailing 0.059 119.0 0.82 0.36 0.46 1 1.64 15.784 219.40 18.69 20 0.50% 2.4 47% 1.60 0.00 1.60 0 0.92 0.05 0.97 1.0 0.052 36.86 55.54 0.083 1.61 0.93 0.25 0.80 1.13 1.0 0.036 2.17 40.47 0.084 3.83 2.72 2 1.639063 16.09 1.5405 18.688
14.436 5594.26 8.9 0.082 8.9 8.8 3.82 0.92%Sand-Slime Tailing 0.059 119.0 0.83 0.37 0.46 1 1.63 14.408 200.27 16.84 17 1.01% 2.5 47% 1.61 0.00 1.61 0 0.92 0.05 0.97 1.0 0.051 36.21 53.04 0.080 1.56 0.93 0.24 0.80 1.13 1.0 0.036 2.99 50.37 0.092 4.16 2.86 2 1.626187 14.498 1.388 16.838
14.600 5594.10 6.1 0.065 6.0 10.0 4.33 1.07%Slime Tailings 0.057 113.1 0.84 0.37 0.47 1 1.61 9.689 134.68 11.37 11 1.24% 2.8 71% 1.62 0.00 1.62 0 0.92 0.05 0.97 1.0 0.052 34.05 45.42 0.073 1.42 0.93 0.19 0.80 1.13 1.0 0.036 4.41 50.17 0.092 4.12 2.77 2 1.614836 9.7898 0.9373 11.370
14.764 5593.94 6.3 0.071 6.2 13.9 6.00 1.13%Slime Tailings 0.057 113.1 0.85 0.38 0.47 1 1.60 9.927 137.98 11.69 12 1.31% 2.8 71% 1.63 0.00 1.63 0 0.92 0.05 0.97 1.0 0.051 34.16 45.85 0.074 1.43 0.93 0.20 0.80 1.13 1.0 0.036 4.41 51.51 0.093 4.13 2.78 2 1.603663 10.065 0.9637 11.690
14.928 5593.77 9.5 0.050 9.4 12.9 5.57 0.53%Sand-Slime Tailing 0.059 119.0 0.86 0.38 0.48 1 1.59 15.023 208.82 17.60 18 0.58% 2.4 47% 1.64 0.00 1.64 0 0.92 0.05 0.97 1.0 0.051 36.47 54.07 0.082 1.59 0.93 0.24 0.80 1.13 1.0 0.036 2.38 41.96 0.085 3.75 2.67 2 1.591409 15.151 1.4505 17.597
15.092 5593.61 8.2 0.031 8.1 11.9 5.14 0.38%Sand-Slime Tailing 0.059 119.0 0.87 0.39 0.48 1 1.58 12.809 178.04 15.01 15 0.42% 2.4 47% 1.65 0.00 1.65 0 0.91 0.05 0.97 1.0 0.051 35.57 50.58 0.078 1.52 0.93 0.22 0.80 1.12 1.0 0.037 2.48 37.18 0.081 3.54 2.53 2 1.579367 12.926 1.2375 15.012
15.256 5593.44 12.5 0.026 12.4 11.9 5.14 0.21%Sand-Slime Tailing 0.059 119.0 0.88 0.39 0.48 1 1.56 19.333 268.72 22.59 24 0.22% 2.2 47% 1.66 0.00 1.66 0 0.91 0.05 0.96 1.0 0.051 38.22 60.81 0.089 1.74 0.93 0.27 0.80 1.12 1.0 0.037 1.59 35.90 0.080 3.46 2.60 2 1.55782 19.448 1.862 22.588
15.420 5593.28 13.4 0.032 13.4 10.3 4.47 0.24%Sand-Slime Tailing 0.059 119.0 0.89 0.40 0.49 1 1.54 20.554 285.71 23.99 26 0.26% 2.2 47% 1.67 0.00 1.67 0 0.91 0.06 0.96 1.0 0.051 38.71 62.70 0.091 1.79 0.93 0.28 0.80 1.12 1.0 0.037 1.56 37.47 0.081 3.49 2.64 2 1.5385 20.653 1.9774 23.988
15.584 5593.12 13.2 0.032 13.1 11.4 4.95 0.24%Sand-Slime Tailing 0.059 119.0 0.90 0.40 0.49 1 1.53 20.065 278.90 23.43 25 0.26% 2.2 47% 1.68 0.00 1.68 0 0.91 0.05 0.96 1.0 0.051 38.52 61.95 0.090 1.77 0.93 0.28 0.80 1.12 1.0 0.037 1.59 37.37 0.081 3.46 2.62 2 1.5305 20.174 1.9315 23.431
15.748 5592.95 12.9 0.034 12.9 12.5 5.42 0.26%Sand-Slime Tailing 0.059 119.0 0.91 0.41 0.50 1 1.52 19.566 271.97 22.86 24 0.28% 2.2 47% 1.69 0.00 1.69 0 0.91 0.05 0.96 1.0 0.051 38.32 61.18 0.089 1.76 0.93 0.28 0.80 1.12 1.0 0.037 1.65 37.72 0.081 3.44 2.60 2 1.522657 19.685 1.8846 22.863
15.912 5592.79 13.3 0.033 13.2 12.9 5.61 0.25%Sand-Slime Tailing 0.059 119.0 0.92 0.41 0.50 1 1.51 19.983 277.76 23.35 25 0.27% 2.2 47% 1.70 0.00 1.70 0 0.91 0.05 0.96 1.0 0.051 38.49 61.84 0.090 1.78 0.93 0.28 0.80 1.11 1.0 0.037 1.61 37.58 0.081 3.41 2.59 2 1.509265 20.105 1.9248 23.350
16.076 5592.62 12.7 0.033 12.6 12.9 5.58 0.26%Sand-Slime Tailing 0.059 119.0 0.93 0.42 0.51 1 1.50 18.976 263.76 22.18 23 0.28% 2.2 47% 1.71 0.00 1.71 0 0.91 0.05 0.96 1.0 0.051 38.08 60.26 0.088 1.75 0.92 0.27 0.80 1.11 1.0 0.037 1.69 37.43 0.081 3.38 2.56 2 1.504808 19.097 1.8283 22.180
16.240 5592.46 12.7 0.036 12.6 13.1 5.68 0.28%Sand-Slime Tailing 0.059 119.0 0.93 0.42 0.51 1 1.49 18.852 262.04 22.04 23 0.31% 2.2 47% 1.72 0.00 1.72 0 0.91 0.05 0.96 1.0 0.050 38.03 60.07 0.088 1.74 0.92 0.27 0.80 1.11 1.0 0.037 1.73 38.09 0.082 3.38 2.56 2 1.494996 18.974 1.8166 22.037
16.404 5592.30 13.4 0.038 13.3 13.6 5.91 0.28%Sand-Slime Tailing 0.059 119.0 0.94 0.43 0.52 1 1.48 19.694 273.75 23.02 24 0.31% 2.2 47% 1.73 0.00 1.73 0 0.90 0.05 0.96 1.0 0.050 38.38 61.39 0.089 1.78 0.92 0.28 0.80 1.11 1.0 0.037 1.68 38.59 0.082 3.37 2.57 2 1.479659 19.82 1.8976 23.020
16.568 5592.13 14.1 0.045 14.0 13.7 5.93 0.32%Sand-Slime Tailing 0.059 119.0 0.95 0.43 0.52 1 1.46 20.524 285.29 23.98 25 0.34% 2.2 47% 1.74 0.00 1.74 0 0.90 0.06 0.96 1.0 0.050 38.71 62.70 0.091 1.81 0.92 0.28 0.80 1.11 1.0 0.037 1.67 40.09 0.083 3.39 2.60 2 1.464979 20.649 1.977 23.983
16.732 5591.97 13.5 0.052 13.4 13.7 5.93 0.39%Sand-Slime Tailing 0.059 119.0 0.96 0.44 0.53 1 1.46 19.527 271.42 22.82 24 0.42% 2.3 47% 1.75 0.00 1.75 0 0.90 0.05 0.96 1.0 0.050 38.31 61.13 0.089 1.78 0.92 0.28 0.80 1.10 1.0 0.037 1.82 41.47 0.085 3.42 2.60 2 1.460499 19.652 1.8814 22.824
16.896 5591.80 13.5 0.050 13.5 14.1 6.13 0.37%Sand-Slime Tailing 0.059 119.0 0.97 0.44 0.53 1 1.45 19.512 271.22 22.81 24 0.40% 2.3 47% 1.76 0.00 1.76 0 0.90 0.05 0.96 1.0 0.050 38.30 61.11 0.089 1.78 0.92 0.28 0.80 1.10 1.0 0.037 1.80 41.05 0.084 3.38 2.58 2 1.450728 19.64 1.8804 22.811
17.060 5591.64 14.2 0.052 14.1 14.4 6.25 0.37%Sand-Slime Tailing 0.059 119.0 0.98 0.45 0.54 1 1.44 20.251 281.48 23.67 25 0.39% 2.2 47% 1.77 0.00 1.77 0 0.90 0.05 0.96 1.0 0.050 38.60 62.27 0.090 1.81 0.92 0.28 0.80 1.10 1.0 0.037 1.75 41.43 0.085 3.36 2.59 2 1.437236 20.38 1.9512 23.670
17.224 5591.48 15.7 0.057 15.6 14.5 6.26 0.36%Sand-Slime Tailing 0.059 119.0 0.99 0.45 0.54 1 1.42 22.160 308.02 25.89 27 0.39% 2.2 47% 1.78 0.00 1.78 0 0.90 0.06 0.96 1.0 0.050 39.38 65.27 0.094 1.88 0.91 0.29 0.80 1.10 1.0 0.037 1.64 42.48 0.085 3.38 2.63 2 1.418689 22.288 2.1338 25.886
17.388 5591.31 16.7 0.068 16.6 14.7 6.37 0.41%Sand-Slime Tailing 0.059 119.0 1.00 0.46 0.54 1 1.40 23.276 323.53 27.18 29 0.43% 2.2 47% 1.79 0.00 1.79 0 0.90 0.06 0.96 1.0 0.050 39.84 67.02 0.096 1.93 0.91 0.30 0.80 1.10 1.0 0.037 1.63 44.44 0.087 3.42 2.67 2 1.404698 23.405 2.2408 27.183
17.552 5591.15 17.4 0.079 17.3 15.0 6.49 0.45%Sand-Slime Tailing 0.059 119.0 1.01 0.46 0.55 1 1.39 24.051 334.31 28.09 30 0.48% 2.2 47% 1.80 0.00 1.80 0 0.90 0.06 0.96 1.0 0.050 40.15 68.24 0.097 1.96 0.91 0.31 0.80 1.09 1.0 0.037 1.65 46.24 0.089 3.45 2.71 2 1.392652 24.181 2.3151 28.085
17.716 5590.98 17.4 0.085 17.3 15.1 6.52 0.49%Sand-Slime Tailing 0.059 119.0 1.02 0.47 0.55 1 1.38 24.003 333.64 28.03 30 0.52% 2.2 47% 1.81 0.00 1.81 0 0.89 0.06 0.96 1.0 0.050 40.13 68.16 0.097 1.97 0.91 0.31 0.80 1.09 1.0 0.037 1.68 47.14 0.089 3.45 2.71 2 1.384238 24.133 2.3105 28.029
17.880 5590.82 16.7 0.082 16.7 15.2 6.57 0.49%Sand-Slime Tailing 0.059 119.0 1.03 0.47 0.56 1 1.38 22.974 319.34 26.83 28 0.52% 2.2 47% 1.82 0.00 1.82 0 0.89 0.06 0.96 1.0 0.049 39.71 66.55 0.095 1.93 0.91 0.30 0.80 1.09 1.0 0.037 1.74 46.63 0.089 3.42 2.67 2 1.379835 23.105 2.212 26.835
18.044 5590.66 15.6 0.083 15.5 15.5 6.70 0.53%Sand-Slime Tailing 0.059 119.0 1.04 0.48 0.56 1 1.38 21.358 296.87 24.96 26 0.57% 2.3 47% 1.83 0.00 1.83 0 0.89 0.06 0.96 1.0 0.049 39.06 64.02 0.092 1.87 0.91 0.29 0.80 1.09 1.0 0.037 1.88 46.89 0.089 3.40 2.64 2 1.377916 21.491 2.0575 24.960
18.208 5590.49 15.5 0.082 15.4 15.8 6.83 0.53%Sand-Slime Tailing 0.059 119.0 1.05 0.48 0.57 1 1.37 21.066 292.82 24.62 25 0.57% 2.3 47% 1.83 0.00 1.83 0 0.89 0.06 0.96 1.0 0.049 38.94 63.56 0.092 1.86 0.91 0.29 0.80 1.09 1.0 0.037 1.90 46.75 0.089 3.37 2.62 2 1.370589 21.201 2.0298 24.623
18.372 5590.33 15.5 0.076 15.4 15.9 6.89 0.49%Sand-Slime Tailing 0.059 119.0 1.06 0.49 0.57 1 1.36 21.021 292.19 24.57 25 0.53% 2.3 47% 1.84 0.00 1.84 0 0.89 0.06 0.96 1.0 0.049 38.92 63.49 0.092 1.86 0.91 0.29 0.80 1.08 1.0 0.037 1.86 45.70 0.088 3.32 2.59 2 1.362343 21.156 2.0255 24.572
18.537 5590.16 15.0 0.075 14.9 15.9 6.90 0.50%Sand-Slime Tailing 0.059 119.0 1.07 0.49 0.58 1 1.36 20.261 281.63 23.69 24 0.54% 2.3 47% 1.85 0.00 1.85 0 0.89 0.05 0.96 1.0 0.049 38.61 62.30 0.090 1.84 0.90 0.28 0.80 1.08 1.0 0.037 1.93 45.62 0.088 3.29 2.57 2 1.357054 20.396 1.9527 23.688
18.701 5590.00 14.3 0.060 14.2 15.9 6.90 0.42%Sand-Slime Tailing 0.059 119.0 1.08 0.50 0.58 1 1.35 19.251 267.59 22.51 23 0.45% 2.3 47% 1.86 0.00 1.86 0 0.89 0.05 0.96 1.0 0.049 38.20 60.71 0.089 1.80 0.90 0.27 0.80 1.08 1.0 0.037 1.91 42.96 0.086 3.19 2.50 2 1.352831 19.385 1.8559 22.515
18.865 5589.84 14.4 0.060 14.3 15.9 6.90 0.42%Sand-Slime Tailing 0.059 119.0 1.09 0.50 0.59 1 1.34 19.229 267.28 22.49 23 0.45% 2.3 47% 1.87 0.00 1.87 0 0.89 0.05 0.96 1.0 0.049 38.19 60.68 0.089 1.81 0.90 0.27 0.80 1.08 1.0 0.037 1.91 42.95 0.086 3.17 2.49 2 1.34466 19.362 1.8537 22.488
19.029 5589.67 13.4 0.061 13.3 15.9 6.87 0.46%Sand-Slime Tailing 0.059 119.0 1.10 0.51 0.59 1 1.34 17.843 248.02 20.88 21 0.50% 2.3 47% 1.88 0.00 1.88 0 0.88 0.05 0.96 1.0 0.049 37.62 58.50 0.086 1.76 0.90 0.26 0.80 1.08 1.0 0.037 2.08 43.40 0.086 3.16 2.46 2 1.341616 17.976 1.721 20.878
19.193 5589.51 13.3 0.066 13.2 16.5 7.15 0.50%Sand-Slime Tailing 0.059 119.0 1.11 0.51 0.60 1 1.33 17.561 244.10 20.56 20 0.54% 2.4 47% 1.89 0.00 1.89 0 0.88 0.05 0.96 1.0 0.049 37.51 58.07 0.086 1.75 0.90 0.26 0.80 1.08 1.0 0.037 2.16 44.45 0.087 3.17 2.46 2 1.333442 17.699 1.6945 20.556
19.357 5589.34 13.3 0.073 13.2 16.6 7.18 0.55%Sand-Slime Tailing 0.059 119.0 1.12 0.52 0.60 1 1.33 17.469 242.81 20.45 20 0.60% 2.4 47% 1.90 0.00 1.90 0 0.88 0.05 0.96 1.0 0.049 37.47 57.92 0.086 1.75 0.90 0.26 0.80 1.07 1.0 0.037 2.24 45.86 0.088 3.20 2.47 2 1.32538 17.606 1.6856 20.448
19.521 5589.18 13.2 0.076 13.1 16.9 7.33 0.58%Sand-Slime Tailing 0.059 119.0 1.13 0.52 0.61 1 1.32 17.192 238.98 20.13 20 0.63% 2.4 47% 1.91 0.00 1.91 0 0.88 0.05 0.96 1.0 0.049 37.36 57.49 0.085 1.75 0.90 0.26 0.80 1.07 1.0 0.037 2.31 46.52 0.089 3.20 2.47 2 1.317429 17.332 1.6593 20.130
19.685 5589.02 13.3 0.078 13.2 17.3 7.51 0.59%Sand-Slime Tailing 0.059 119.0 1.14 0.53 0.61 1 1.31 17.260 239.92 20.21 20 0.64% 2.4 47% 1.92 0.00 1.92 0 0.88 0.05 0.96 1.0 0.049 37.39 57.60 0.085 1.75 0.89 0.26 0.80 1.07 1.0 0.037 2.32 46.87 0.089 3.19 2.47 2 1.309586 17.402 1.6661 20.211
19.849 5588.85 14.4 0.075 14.3 17.5 7.57 0.52%Sand-Slime Tailing 0.059 119.0 1.15 0.54 0.61 1 1.30 18.534 257.63 21.69 22 0.57% 2.3 47% 1.93 0.00 1.93 0 0.88 0.05 0.96 1.0 0.049 37.91 59.60 0.087 1.80 0.89 0.27 0.80 1.07 1.0 0.037 2.11 45.87 0.088 3.14 2.47 2 1.299751 18.676 1.7881 21.691
20.013 5588.69 17.2 0.080 17.1 18.1 7.83 0.47%Sand-Slime Tailing 0.059 119.0 1.16 0.54 0.62 1 1.28 21.877 304.09 25.58 26 0.50% 2.3 47% 1.94 0.00 1.94 0 0.88 0.06 0.95 1.0 0.048 39.27 64.85 0.093 1.93 0.89 0.29 0.80 1.07 1.0 0.037 1.81 46.18 0.088 3.13 2.53 2 1.281587 22.021 2.1083 25.576
20.177 5588.52 20.3 0.100 20.2 18.0 7.79 0.49%Sand-Slime Tailing 0.059 119.0 1.17 0.55 0.62 1 1.26 25.566 355.37 29.86 31 0.52% 2.2 47% 1.95 0.00 1.95 0 0.87 0.06 0.95 1.0 0.048 40.77 70.63 0.100 2.09 0.89 0.32 0.80 1.07 1.0 0.037 1.65 49.26 0.091 3.20 2.64 2 1.264406 25.708 2.4613 29.859
20.341 5588.36 21.7 0.131 21.6 18.0 7.79 0.60%Sand-Slime Tailing 0.059 119.0 1.18 0.55 0.63 1 1.25 27.037 375.81 31.57 33 0.64% 2.2 47% 1.96 0.00 1.96 0 0.87 0.06 0.95 1.0 0.048 41.37 72.94 0.103 2.15 0.89 0.32 0.80 1.07 1.0 0.037 1.69 53.33 0.094 3.29 2.72 2 1.254035 27.178 2.602 31.565
20.505 5588.20 22.7 0.153 22.6 18.4 7.99 0.67%Sand-Slime Tailing 0.059 119.0 1.19 0.56 0.63 1 1.24 28.112 390.75 32.82 34 0.71% 2.2 47% 1.97 0.00 1.97 0 0.87 0.06 0.95 1.0 0.048 41.81 74.63 0.105 2.20 0.89 0.33 0.80 1.06 1.0 0.037 1.71 55.97 0.096 3.35 2.77 2 1.244973 28.255 2.7051 32.816
20.669 5588.03 23.1 0.172 23.0 18.7 8.09 0.74%Sand-Slime Tailing 0.059 119.0 1.20 0.56 0.64 1 1.24 28.492 396.03 33.26 34 0.78% 2.2 47% 1.98 0.00 1.98 0 0.87 0.06 0.95 1.0 0.048 41.97 75.22 0.106 2.22 0.89 0.33 0.80 1.06 1.0 0.037 1.75 58.12 0.098 3.39 2.81 2 1.23769 28.636 2.7416 33.259
20.833 5587.87 23.6 0.180 23.5 18.7 8.09 0.76%Sand-Slime Tailing 0.059 119.0 1.21 0.57 0.64 1 1.23 28.892 401.60 33.72 35 0.80% 2.2 47% 1.99 0.00 1.99 0 0.87 0.06 0.95 1.0 0.048 42.13 75.85 0.107 2.24 0.89 0.34 0.80 1.06 1.0 0.037 1.75 58.98 0.099 3.40 2.82 2 1.230504 29.036 2.7799 33.723
20.997 5587.70 23.1 0.180 23.0 18.8 8.16 0.78%Sand-Slime Tailing 0.059 119.0 1.22 0.57 0.65 1 1.23 28.155 391.36 32.87 34 0.82% 2.2 47% 2.00 0.00 2.00 0 0.87 0.06 0.95 1.0 0.048 41.83 74.70 0.106 2.22 0.88 0.33 0.80 1.06 1.0 0.037 1.79 58.98 0.099 3.38 2.80 2 1.225743 28.299 2.7094 32.868
21.161 5587.54 23.7 0.180 23.6 19.2 8.33 0.76%Sand-Slime Tailing 0.059 119.0 1.23 0.58 0.65 1 1.22 28.695 398.86 33.50 34 0.80% 2.2 47% 2.01 0.00 2.01 0 0.87 0.06 0.95 1.0 0.048 42.05 75.55 0.107 2.24 0.88 0.33 0.80 1.06 1.0 0.037 1.76 58.94 0.099 3.36 2.80 2 1.218455 28.841 2.7612 33.497
Liquef_SeismicSettle_30Aug2015.xls Page 30 of 36
Energy Fuels Resources (USA) Inc.
White Mesa MillLiquefaction Analyses
Data File: 13-52106_SP3-6N-BSC-CPT 5604.20 Water surface elevation during CPT investigation (ft am5607.44 Ground Surface Elevation at time of CPT (ft amsl)Location: White Mesa 2013 CPT Investigation 0.15 5599.16 Water surface elevation at t0 (ft amsl)5623.62 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl)
..\..\..\6.2.3 Field Data\2013 Field Investigation\Conetec Dat 5.5 5590.44 Water surface elevation at t1 (ft amsl) 0.50 Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after pla ###### 5623.37 5623.12 0.50 0.055 110 0.028 0.014 0.00 0.00 0.028 0.014
Tailings Sands 1.69 5585.44 Water surface elevation at t2 (ft amsl)3.50 Thickness of Water Storage/Rooting Zone (ft) ###### 5621.37 5619.62 3.50 0.054 107 0.215 0.121 0.00 0.00 0.215 0.121
Tailings Sand-Slimes 3.50 Thickness of High Compaction Layer (ft)###### 5617.87 5616.12 3.50 0.060 120 0.424 0.320 0.00 0.00 0.424 0.320
Tailings Slimes 1.44 8.68 Thickness of Random/Platform Fill on on top of existing interim cover (ft) ###### 5611.78 5607.44 8.68 0.050 101 0.861 0.643 0.00 0.00 0.861 0.643
Interim Cover 0.47 1720.10 Additional Stress due to Final Cover Placement, ΔσFC (psf)
Cells Requiring User Input/Manipulation 2.21 2.21 7.51 5585.44 Elevation of bottom of tailings (liner) (ft amsl)
rd Cσ Kσ Ka rd Dr f Kσ Ka Avg CN qc1 qc1 qc1N
(ft) (ft amsl) TSF TSF TSF (ft) PSI (%) (tcf) (pcf) (tsf)(tsf)(tsf) 1=Yes TSF MPa % (tsf)(tsf)(tsf) 1=Yes FoS TSF MPa
0=No 0=No
0.164 5607.28 10.8 0.029 10.8 8.7 3.75 0.27%Interim Cover 0.050 100.7 0.01 0.00 0.01 0 1.70 18.326 254.73 21.39 1310 0.27% 0.7 51% 0.87 0.00 0.87 0 1.00 0.05 1.00 1.0 0.058 37.83 59.22 0.087 1.51 0.96 0.27 0.80 2.53 1.0 0.017 1.00 21.39 0.068 166.66 84.08 2 1.7 18.418 1.7633 21.391
0.328 5607.11 17.1 0.110 17.0 4.0 1.74 0.64%Interim Cover 0.050 100.7 0.02 0.00 0.02 0 1.70 28.968 402.66 33.69 1032 0.65% 1.1 51% 0.88 0.00 0.88 0 1.00 0.06 1.00 1.0 0.058 42.14 75.84 0.107 1.85 0.96 0.34 0.80 2.20 1.0 0.019 1.00 33.69 0.078 95.96 48.91 2 1.7 29.011 2.7775 33.694
0.492 5606.95 38.1 0.119 38.1 2.8 1.21 0.31%Interim Cover 0.050 100.7 0.02 0.00 0.02 0 1.70 64.804 900.78 75.30 1538 0.31% 0.8 51% 0.88 0.00 0.88 0 1.00 0.09 1.00 1.0 0.058 56.75 132.05 0.208 3.61 0.96 0.50 0.75 2.43 1.0 0.017 1.00 75.30 0.120 98.14 50.88 2 1.7 64.834 6.2072 75.300
0.656 5606.78 56.7 0.134 56.7 2.8 1.21 0.24%Interim Cover 0.050 100.7 0.03 0.00 0.03 0 1.70 96.339 1339.11 111.93 1714 0.24% 0.6 51% 0.89 0.00 0.89 0 1.00 0.12 1.00 1.0 0.058 69.60 181.53 0.561 9.75 0.96 0.61 0.69 2.71 1.0 0.016 1.00 111.93 0.210 129.42 69.59 2 1.7 96.369 9.2263 111.926
0.820 5606.62 78.5 0.600 78.5 2.0 0.88 0.76%Interim Cover 0.050 100.7 0.04 0.00 0.04 0 1.70 133.399 1854.25 154.96 1899 0.76% 1.1 51% 0.90 0.00 0.90 0 1.00 0.17 0.99 1.0 0.057 84.70 239.66 1.000 17.43 0.96 0.72 0.64 2.98 1.0 0.014 1.00 154.96 0.426 209.74 113.58 2 1.7 133.42 12.774 154.960
0.984 5606.46 88.8 0.411 88.8 7.3 3.17 0.46%Interim Cover 0.050 100.7 0.05 0.00 0.05 0 1.70 150.909 2097.64 175.36 1791 0.46% 0.9 51% 0.91 0.00 0.91 0 1.00 0.20 0.99 1.0 0.057 91.86 267.22 1.000 17.49 0.96 0.76 0.62 2.98 1.0 0.014 1.00 175.36 1.000 410.39 213.94 2 1.7 150.99 14.455 175.362
1.148 5606.29 97.1 0.455 97.1 6.7 2.89 0.47%Interim Cover 0.050 100.7 0.06 0.00 0.06 0 1.70 165.002 2293.53 191.72 1678 0.47% 0.9 51% 0.92 0.00 0.92 0 1.00 0.24 0.98 1.0 0.057 97.60 289.32 1.000 17.57 0.96 0.80 0.60 2.94 1.0 0.014 1.00 191.72 1.000 351.91 184.74 2 1.7 165.07 15.804 191.722
1.312 5606.13 120.3 0.621 120.3 5.6 2.42 0.52%Interim Cover 0.050 100.7 0.07 0.00 0.07 0 1.70 204.459 2841.98 237.54 1819 0.52% 1.0 51% 0.93 0.00 0.93 0 1.00 0.30 0.98 1.0 0.057 113.68 351.21 1.000 17.69 0.96 0.89 0.60 2.79 1.0 0.015 1.00 237.54 1.000 308.04 162.86 2 1.7 204.52 19.581 237.536
1.476 5605.96 117.5 1.100 117.5 6.9 2.99 0.94%Interim Cover 0.050 100.7 0.07 0.00 0.07 0 1.70 199.682 2775.58 232.00 1579 0.94% 1.2 51% 0.93 0.00 0.93 0 1.00 0.30 0.98 1.0 0.056 111.74 343.74 1.000 17.73 0.96 0.88 0.60 2.66 1.0 0.016 1.00 232.00 1.000 273.92 145.83 2 1.7 199.76 19.125 232.004
1.640 5605.80 118.4 1.817 118.4 11.4 4.95 1.53%Interim Cover 0.050 100.7 0.08 0.00 0.08 0 1.70 201.212 2796.85 233.84 1433 1.54% 1.4 51% 0.94 0.00 0.94 0 1.00 0.30 0.97 1.0 0.056 112.38 346.22 1.000 17.78 0.96 0.88 0.60 2.55 1.0 0.017 1.00 233.84 1.000 246.63 132.21 2 1.7 201.33 19.276 233.836
1.804 5605.64 123.5 2.268 123.4 21.1 9.14 1.84%Interim Cover 0.050 100.7 0.09 0.00 0.09 0 1.70 209.780 2915.94 243.91 1358 1.84% 1.5 51% 0.95 0.00 0.95 0 1.00 0.30 0.97 1.0 0.056 115.92 359.82 1.000 17.83 0.96 0.90 0.60 2.46 1.0 0.017 1.00 243.91 1.000 224.30 121.06 2 1.7 210 20.106 243.907
1.968 5605.47 160.8 1.984 160.8 3.6 1.57 1.23%Interim Cover 0.050 100.7 0.10 0.00 0.10 0 1.70 273.394 3800.18 317.58 1621 1.23% 1.3 51% 0.96 0.00 0.96 0 1.00 0.30 0.97 1.0 0.056 141.77 459.34 1.000 17.89 0.96 1.03 0.60 2.37 1.0 0.018 1.00 317.58 1.000 205.69 111.79 2 1.7 273.43 26.178 317.575
2.133 5605.31 176.8 1.510 176.8 2.1 0.90 0.85%Interim Cover 0.050 100.7 0.11 0.00 0.11 0 1.70 300.577 4178.02 349.13 1645 0.85% 1.2 51% 0.97 0.00 0.97 0 1.00 0.30 0.97 1.0 0.056 152.84 501.97 1.000 17.96 0.96 1.08 0.60 2.30 1.0 0.018 1.00 349.13 1.000 189.94 103.95 2 1.7 300.6 28.779 349.128
2.297 5605.14 139.6 1.524 139.5 6.6 2.87 1.09%Interim Cover 0.050 100.7 0.12 0.00 0.12 0 1.70 236.977 3293.98 275.32 1206 1.09% 1.3 51% 0.98 0.00 0.98 0 1.00 0.30 0.96 1.0 0.055 126.94 402.25 1.000 18.02 0.96 0.96 0.60 2.23 1.0 0.019 1.00 275.32 1.000 176.45 97.23 2 1.69827 237.05 22.695 275.316
2.461 5604.98 107.1 1.707 107.0 5.4 2.32 1.59%Interim Cover 0.050 100.7 0.12 0.00 0.12 0 1.70 181.951 2529.12 211.39 863 1.60% 1.5 51% 0.98 0.00 0.98 0 1.00 0.30 0.96 1.0 0.055 104.50 315.90 1.000 18.08 0.96 0.84 0.60 2.17 1.0 0.019 1.00 211.39 1.000 164.75 91.41 2 1.7 182.01 17.425 211.391
2.625 5604.82 84.4 1.333 84.4 6.6 2.87 1.58%Interim Cover 0.050 100.7 0.13 0.00 0.13 0 1.70 143.480 1994.37 166.72 638 1.58% 1.6 51% 0.99 0.00 0.99 0 1.00 0.19 0.97 1.0 0.056 88.83 255.55 1.000 17.84 0.96 0.75 0.63 2.01 1.0 0.021 1.00 166.72 1.000 154.51 86.18 2 1.7 143.55 13.744 166.725
2.789 5604.65 89.6 1.432 89.6 -4.7 -2.02 1.60%Interim Cover 0.050 100.7 0.14 0.00 0.14 0 1.70 152.388 2118.19 176.93 637 1.60% 1.6 51% 1.00 0.00 1.00 0 0.99 0.21 0.97 1.0 0.056 92.41 269.34 1.000 17.94 0.96 0.77 0.62 2.01 1.0 0.021 1.00 176.93 1.000 145.48 81.71 2 1.7 152.34 14.585 176.932
2.953 5604.49 77.3 1.421 77.3 -4.6 -2.00 1.84%Interim Cover 0.050 100.7 0.15 0.00 0.15 0 1.70 131.376 1826.13 152.53 518 1.84% 1.7 51% 1.01 0.00 1.01 0 0.99 0.16 0.97 1.0 0.056 83.85 236.38 1.000 17.87 0.96 0.71 0.64 1.87 1.0 0.023 1.01 154.81 0.425 58.42 38.14 2 1.7 131.33 12.573 152.528
3.117 5604.32 57.2 1.269 57.2 -3.2 -1.37 2.22%Interim Cover 0.050 100.7 0.16 0.00 0.16 0 1.70 97.240 1351.64 112.90 363 2.23% 1.8 51% 1.02 0.00 1.02 0 0.99 0.12 0.98 1.0 0.056 69.94 182.84 0.585 10.40 0.96 0.61 0.69 1.69 1.0 0.025 1.12 125.96 0.266 34.64 22.52 2 1.7 97.207 9.3066 112.900
3.281 5604.16 57.1 1.231 57.1 -3.1 -1.33 2.16%Sand-Slime Tailing 0.059 119.0 0.17 0.00 0.17 1 1.70 97.019 1348.56 112.64 344 2.16% 1.8 47% 1.03 0.00 1.03 0 0.99 0.12 0.98 1.0 0.056 69.81 182.45 0.578 10.29 0.95 0.61 0.69 1.66 1.0 0.025 1.12 125.82 0.265 32.80 21.54 2 1.7 96.987 9.2855 112.644
3.445 5604.00 105.1 0.904 105.1 -2.7 -1.16 0.86%Sand Tailings 0.062 123.5 0.18 0.01 0.17 1 1.68 177.110 2461.83 205.67 616 0.86% 1.3 18% 1.04 0.00 1.04 0 0.99 0.28 0.95 1.0 0.054 74.67 280.34 1.000 18.41 0.95 0.83 0.60 1.91 1.0 0.022 1.00 205.67 1.000 120.06 69.23 2 1.684674 177.08 16.954 205.670
3.609 5603.83 60.4 0.451 60.5 -1.3 -0.55 0.75%Sand Tailings 0.062 123.5 0.19 0.01 0.18 1 1.70 102.765 1428.43 119.34 343 0.75% 1.4 18% 1.05 0.00 1.05 0 0.99 0.12 0.98 1.0 0.056 52.60 171.94 0.428 7.66 0.95 0.63 0.68 1.65 1.0 0.025 1.00 119.34 0.238 27.78 17.72 2 1.7 102.75 9.8374 119.340
3.773 5603.67 36.8 0.568 36.8 -6.9 -2.99 1.55%Sand-Slime Tailing 0.059 119.0 0.20 0.02 0.18 1 1.70 62.560 869.58 72.57 203 1.55% 1.8 47% 1.06 0.00 1.06 0 0.99 0.09 0.98 1.0 0.056 55.75 128.33 0.199 3.54 0.95 0.49 0.75 1.47 1.0 0.029 1.13 81.86 0.131 14.90 9.22 2 1.7 62.487 5.9825 72.574
3.937 5603.50 18.3 0.393 18.4 -6.8 -2.95 2.14%Sand-Slime Tailing 0.059 119.0 0.21 0.02 0.18 1 1.70 31.246 434.32 36.21 98 2.17% 2.1 47% 1.07 0.00 1.07 0 0.99 0.06 0.99 1.0 0.056 43.00 79.21 0.112 1.98 0.95 0.35 0.80 1.36 1.0 0.031 1.54 55.93 0.096 10.68 6.33 2 1.7 31.174 2.9846 36.206
4.101 5603.34 6.8 0.370 6.8 -1.7 -0.72 5.47%Slime Tailings 0.057 113.1 0.22 0.03 0.19 1 1.70 11.526 160.21 13.37 35 5.65% 2.8 71% 1.08 0.00 1.08 0 0.99 0.05 0.99 1.0 0.056 34.74 48.11 0.076 1.34 0.95 0.21 0.80 1.35 1.0 0.031 4.45 59.42 0.100 10.80 6.07 2 1.7 11.508 1.1018 13.366
4.265 5603.17 7.9 0.213 7.9 1.0 0.42 2.68%Slime Tailings 0.057 113.1 0.23 0.03 0.19 1 1.70 13.481 187.39 15.67 40 2.76% 2.5 71% 1.09 0.00 1.09 0 0.99 0.05 0.99 1.0 0.056 35.54 51.21 0.079 1.40 0.95 0.23 0.80 1.35 1.0 0.031 2.77 43.40 0.086 9.15 5.27 2 1.7 13.491 1.2917 15.669
4.429 5603.01 9.1 0.198 9.1 0.7 0.29 2.18%Slime Tailings 0.057 113.1 0.23 0.04 0.20 1 1.70 15.436 214.56 17.94 45 2.24% 2.4 71% 1.09 0.00 1.09 0 0.99 0.05 0.99 1.0 0.056 36.33 54.27 0.082 1.45 0.95 0.24 0.80 1.34 1.0 0.031 2.32 41.62 0.085 8.81 5.13 2 1.7 15.443 1.4785 17.936
4.593 5602.85 7.9 0.200 7.9 1.4 0.59 2.54%Slime Tailings 0.057 113.1 0.24 0.04 0.20 1 1.70 13.362 185.73 15.54 38 2.62% 2.5 71% 1.10 0.00 1.10 0 0.98 0.05 0.99 1.0 0.056 35.50 51.03 0.078 1.40 0.95 0.23 0.80 1.34 1.0 0.031 2.78 43.24 0.086 8.77 5.08 2 1.7 13.376 1.2807 15.536
4.757 5602.68 14.7 0.112 14.6 6.6 2.87 0.76%Sand-Slime Tailing 0.059 119.0 0.25 0.05 0.21 1 1.70 24.837 345.23 28.93 70 0.78% 2.0 47% 1.11 0.00 1.11 0 0.98 0.06 0.99 1.0 0.056 40.45 69.38 0.099 1.76 0.95 0.31 0.80 1.33 1.0 0.032 1.26 36.49 0.080 8.01 4.89 2 1.7 24.907 2.3846 28.928
4.921 5602.52 29.5 0.077 29.5 0.6 0.26 0.26%Sand-Slime Tailing 0.059 119.0 0.26 0.05 0.21 1 1.70 50.201 697.79 58.31 139 0.26% 1.5 47% 1.12 0.00 1.12 0 0.98 0.08 0.98 1.0 0.056 50.75 109.07 0.158 2.84 0.95 0.44 0.78 1.36 1.0 0.031 1.00 58.31 0.098 9.60 6.22 2 1.7 50.207 4.8069 58.313
5.085 5602.35 24.5 0.105 24.5 -1.1 -0.49 0.43%Sand-Slime Tailing 0.059 119.0 0.27 0.06 0.22 1 1.70 41.633 578.70 48.34 112 0.43% 1.7 47% 1.13 0.00 1.13 0 0.98 0.07 0.98 1.0 0.056 47.26 95.60 0.135 2.43 0.95 0.40 0.80 1.32 1.0 0.032 1.01 48.77 0.091 8.65 5.54 2 1.7 41.621 3.9848 48.340
5.249 5602.19 21.8 0.186 21.8 2.1 0.91 0.85%Sand-Slime Tailing 0.059 119.0 0.28 0.06 0.22 1 1.70 37.094 515.61 43.11 98 0.86% 1.9 47% 1.14 0.00 1.14 0 0.98 0.07 0.98 1.0 0.056 45.42 88.53 0.125 2.24 0.95 0.38 0.80 1.31 1.0 0.032 1.17 50.35 0.092 8.59 5.41 2 1.7 37.116 3.5535 43.108
5.413 5602.03 13.2 0.258 13.2 3.3 1.43 1.95%Sand-Slime Tailing 0.059 119.0 0.29 0.07 0.22 1 1.70 22.474 312.39 26.14 58 1.99% 2.3 47% 1.15 0.00 1.15 0 0.98 0.06 0.98 1.0 0.056 39.47 65.61 0.094 1.69 0.95 0.30 0.80 1.31 1.0 0.032 1.91 49.87 0.092 8.38 5.04 2 1.7 22.509 2.155 26.143
5.577 5601.86 10.1 0.292 10.0 11.1 4.81 2.89%Slime Tailings 0.057 113.1 0.30 0.07 0.23 1 1.70 17.068 237.25 19.96 43 2.98% 2.5 71% 1.16 0.00 1.16 0 0.98 0.05 0.98 1.0 0.056 37.04 57.00 0.085 1.52 0.95 0.26 0.80 1.30 1.0 0.032 2.76 55.19 0.096 8.60 5.06 2 1.7 17.186 1.6454 19.960
5.741 5601.70 8.4 0.248 8.3 11.7 5.07 2.95%Slime Tailings 0.057 113.1 0.31 0.08 0.23 1 1.70 14.144 196.60 16.57 35 3.07% 2.6 71% 1.17 0.00 1.17 0 0.98 0.05 0.98 1.0 0.056 35.86 52.43 0.080 1.43 0.95 0.24 0.80 1.30 1.0 0.032 3.18 52.77 0.094 8.28 4.86 2 1.7 14.268 1.366 16.572
5.905 5601.53 7.3 0.202 7.2 12.6 5.46 2.76%Slime Tailings 0.057 113.1 0.32 0.08 0.24 1 1.70 12.308 171.08 14.45 30 2.89% 2.6 71% 1.18 0.00 1.18 0 0.98 0.05 0.98 1.0 0.056 35.12 49.57 0.077 1.39 0.95 0.22 0.80 1.29 1.0 0.032 3.40 49.16 0.091 7.90 4.64 2 1.7 12.442 1.1912 14.450
6.069 5601.37 11.4 0.159 11.3 23.0 9.95 1.40%Sand-Slime Tailing 0.059 119.0 0.33 0.09 0.24 1 1.70 19.125 265.84 22.50 46 1.44% 2.3 47% 1.19 0.00 1.19 0 0.98 0.05 0.98 1.0 0.055 38.19 60.69 0.089 1.60 0.95 0.27 0.80 1.29 1.0 0.032 1.87 42.03 0.085 7.24 4.42 2 1.7 19.369 1.8544 22.496
6.234 5601.21 13.4 0.202 13.4 8.1 3.51 1.51%Sand-Slime Tailing 0.059 119.0 0.34 0.09 0.25 1 1.70 22.712 315.70 26.48 53 1.55% 2.2 47% 1.20 0.00 1.20 0 0.98 0.06 0.98 1.0 0.055 39.59 66.07 0.095 1.71 0.95 0.30 0.80 1.28 1.0 0.033 1.78 47.10 0.089 7.46 4.59 2 1.7 22.798 2.1827 26.478
6.398 5601.04 17.4 0.135 17.4 8.8 3.83 0.77%Sand-Slime Tailing 0.059 119.0 0.35 0.10 0.25 1 1.70 29.529 410.45 34.41 68 0.79% 2.0 47% 1.21 0.00 1.21 0 0.97 0.06 0.98 1.0 0.055 42.37 76.77 0.108 1.96 0.95 0.34 0.80 1.28 1.0 0.033 1.28 43.97 0.087 7.11 4.54 2 1.7 29.623 2.8361 34.405
6.562 5600.88 33.6 0.152 33.5 8.1 3.50 0.45%Sand Tailings 0.062 123.5 0.36 0.10 0.26 1 1.70 56.967 791.84 66.26 130 0.46% 1.6 18% 1.22 0.00 1.22 0 0.97 0.08 0.97 1.0 0.055 39.03 105.29 0.151 2.77 0.95 0.47 0.77 1.33 1.0 0.031 1.00 66.26 0.107 8.62 5.70 2 1.7 57.053 5.4622 66.263
6.726 5600.71 25.5 0.167 25.5 1.3 0.57 0.65%Sand-Slime Tailing 0.059 119.0 0.37 0.11 0.26 1 1.70 43.418 603.51 50.44 97 0.66% 1.8 47% 1.23 0.00 1.23 0 0.97 0.07 0.97 1.0 0.055 47.99 98.44 0.140 2.56 0.95 0.41 0.79 1.28 1.0 0.033 1.12 56.34 0.097 7.65 5.10 2 1.7 43.432 4.1582 50.444
6.890 5600.55 13.1 0.130 13.1 2.1 0.90 0.99%Sand-Slime Tailing 0.059 119.0 0.38 0.11 0.27 1 1.70 22.287 309.79 25.91 48 1.02% 2.2 47% 1.24 0.00 1.24 0 0.97 0.06 0.98 1.0 0.055 39.39 65.30 0.094 1.71 0.95 0.29 0.80 1.27 1.0 0.033 1.60 41.35 0.084 6.57 4.14 2 1.7 22.309 2.1359 25.911
7.054 5600.39 6.0 0.125 5.9 15.6 6.76 2.08%Slime Tailings 0.057 113.1 0.39 0.12 0.27 1 1.70 10.047 139.65 11.86 21 2.22% 2.7 71% 1.25 0.00 1.25 0 0.97 0.05 0.98 1.0 0.055 34.22 46.08 0.074 1.34 0.95 0.20 0.80 1.26 1.0 0.033 3.72 44.16 0.087 6.65 3.99 2 1.7 10.212 0.9777 11.861
7.218 5600.22 6.6 0.062 6.4 28.5 12.36 0.94%Slime Tailings 0.057 113.1 0.40 0.12 0.27 1 1.70 10.914 151.70 13.03 23 1.00% 2.4 71% 1.26 0.00 1.26 0 0.97 0.05 0.98 1.0 0.055 34.62 47.65 0.075 1.37 0.95 0.21 0.80 1.26 1.0 0.033 2.49 32.43 0.077 5.81 3.59 2 1.7 11.217 1.0739 13.028
7.382 5600.06 19.6 0.120 19.5 19.3 8.36 0.61%Sand-Slime Tailing 0.059 119.0 0.41 0.13 0.28 1 1.70 33.133 460.55 38.72 69 0.62% 1.9 47% 1.27 0.00 1.27 0 0.97 0.06 0.98 1.0 0.055 43.88 82.60 0.116 2.13 0.95 0.36 0.80 1.25 1.0 0.033 1.21 46.84 0.089 6.61 4.37 2 1.7 33.338 3.1918 38.720
7.546 5599.89 11.8 0.165 11.8 7.7 3.32 1.40%Sand-Slime Tailing 0.059 119.0 0.42 0.13 0.28 1 1.70 20.009 278.13 23.33 40 1.45% 2.3 47% 1.28 0.00 1.28 0 0.97 0.05 0.98 1.0 0.055 38.48 61.82 0.090 1.64 0.94 0.28 0.80 1.25 1.0 0.033 2.02 47.02 0.089 6.52 4.08 2 1.7 20.09 1.9234 23.334
7.710 5599.73 11.2 0.230 11.1 15.6 6.75 2.06%Slime Tailings 0.057 113.1 0.43 0.14 0.29 1 1.70 18.819 261.58 22.05 37 2.14% 2.5 71% 1.29 0.00 1.29 0 0.97 0.05 0.98 1.0 0.055 37.77 59.82 0.088 1.60 0.94 0.27 0.80 1.25 1.0 0.033 2.53 55.75 0.096 6.92 4.26 2 1.7 18.984 1.8176 22.049
7.874 5599.57 9.4 0.185 9.3 9.2 4.00 1.98%Slime Tailings 0.057 113.1 0.44 0.14 0.29 1 1.70 15.810 219.76 18.48 31 2.07% 2.5 71% 1.30 0.00 1.30 0 0.96 0.05 0.98 1.0 0.055 36.52 55.00 0.082 1.51 0.94 0.25 0.80 1.24 1.0 0.034 2.82 52.03 0.093 6.61 4.06 2 1.7 15.908 1.523 18.476
8.038 5599.40 7.2 0.119 7.1 13.2 5.73 1.66%Slime Tailings 0.057 113.1 0.45 0.15 0.30 1 1.70 12.019 167.06 14.12 23 1.77% 2.6 71% 1.31 0.00 1.31 0 0.96 0.05 0.98 1.0 0.055 35.01 49.13 0.077 1.40 0.94 0.22 0.80 1.24 1.0 0.034 3.17 44.79 0.087 6.12 3.76 2 1.7 12.159 1.1641 14.122
8.202 5599.24 6.0 0.067 5.9 26.0 11.28 1.11%Slime Tailings 0.057 113.1 0.45 0.15 0.30 1 1.70 9.962 138.47 11.89 19 1.20% 2.6 71% 1.31 0.00 1.31 0 0.96 0.05 0.98 1.0 0.055 34.23 46.12 0.074 1.35 0.94 0.20 0.80 1.24 1.0 0.034 3.07 36.49 0.080 5.56 3.46 2 1.7 10.238 0.9802 11.891
8.366 5599.07 6.1 0.081 5.9 31.3 13.56 1.34%Slime Tailings 0.057 113.1 0.46 0.16 0.30 1 1.70 9.962 138.47 11.96 18 1.45% 2.6 71% 1.32 0.00 1.32 0 0.96 0.05 0.98 1.0 0.054 34.25 46.21 0.074 1.36 0.94 0.20 0.80 1.23 1.0 0.034 3.34 39.89 0.083 5.68 3.52 2 1.7 10.294 0.9856 11.956
8.530 5598.91 13.2 0.065 12.9 48.6 21.04 0.49%Sand-Slime Tailing 0.059 119.0 0.47 0.17 0.31 1 1.70 21.981 305.54 26.13 41 0.51% 2.1 47% 1.33 0.00 1.33 0 0.96 0.06 0.98 1.0 0.054 39.47 65.59 0.094 1.74 0.94 0.30 0.80 1.23 1.0 0.034 1.41 36.75 0.081 5.42 3.58 2 1.7 22.496 2.1538 26.128
8.694 5598.75 13.3 0.116 13.3 8.9 3.84 0.87%Sand-Slime Tailing 0.059 119.0 0.48 0.17 0.31 1 1.70 22.525 313.10 26.27 41 0.90% 2.2 47% 1.34 0.00 1.34 0 0.96 0.06 0.97 1.0 0.054 39.52 65.79 0.094 1.75 0.94 0.30 0.80 1.22 1.0 0.034 1.66 43.71 0.086 5.72 3.74 2 1.7 22.619 2.1655 26.271
8.858 5598.58 6.7 0.132 6.6 9.6 4.14 1.98%Slime Tailings 0.057 113.1 0.49 0.18 0.32 1 1.70 11.254 156.43 13.19 20 2.13% 2.7 71% 1.35 0.00 1.35 0 0.96 0.05 0.98 1.0 0.054 34.68 47.87 0.075 1.39 0.94 0.21 0.80 1.22 1.0 0.034 3.81 50.27 0.092 6.00 3.70 2 1.7 11.355 1.0872 13.189
9.022 5598.42 3.7 0.117 3.6 7.2 3.11 3.20%Slime Tailings 0.057 113.1 0.50 0.18 0.32 1 1.70 6.137 85.30 7.22 10 3.71% 3.1 71% 1.36 0.00 1.36 0 0.96 0.04 0.98 1.0 0.054 32.60 39.82 0.068 1.26 0.94 0.16 0.80 1.22 1.0 0.034 7.40 53.38 0.094 6.08 3.67 2 1.7 6.2132 0.5949 7.216
9.186 5598.25 2.3 0.054 2.2 18.5 8.01 2.32%Slime Tailings 0.057 113.1 0.51 0.19 0.33 1 1.70 3.757 52.22 4.59 6 2.98% 3.2 71% 1.37 0.00 1.37 0 0.96 0.04 0.98 1.0 0.054 31.69 36.28 0.066 1.21 0.94 0.12 0.80 1.21 1.0 0.034 9.35 42.94 0.086 5.47 3.34 2 1.7 3.9532 0.3785 4.591
9.350 5598.09 2.4 0.024 2.2 24.5 10.62 1.02%Slime Tailings 0.057 113.1 0.52 0.19 0.33 1 1.70 3.757 52.22 4.67 6 1.30% 3.0 71% 1.38 0.00 1.38 0 0.96 0.04 0.98 1.0 0.054 31.71 36.38 0.066 1.21 0.94 0.12 0.80 1.21 1.0 0.034 7.11 33.17 0.078 4.89 3.05 2 1.7 4.017 0.3846 4.666
9.514 5597.93 2.6 0.011 2.4 34.3 14.85 0.42%Slime Tailings 0.057 113.1 0.53 0.20 0.33 1 1.70 4.080 56.71 5.16 6 0.53% 2.8 71% 1.39 0.00 1.39 0 0.95 0.04 0.98 1.0 0.054 31.88 37.05 0.066 1.23 0.94 0.13 0.80 1.21 1.0 0.034 5.10 26.30 0.072 4.48 2.85 2 1.7 4.4436 0.4254 5.161
9.678 5597.76 2.8 0.016 2.6 37.8 16.39 0.57%Slime Tailings 0.057 113.1 0.54 0.20 0.34 1 1.70 4.403 61.20 5.58 7 0.70% 2.8 71% 1.40 0.00 1.40 0 0.95 0.04 0.98 1.0 0.054 32.03 37.61 0.067 1.24 0.94 0.14 0.80 1.21 1.0 0.034 5.19 28.96 0.074 4.56 2.90 2 1.7 4.8045 0.46 5.580
9.842 5597.60 3.2 0.010 2.9 39.6 17.14 0.32%Slime Tailings 0.057 113.1 0.55 0.21 0.34 1 1.70 4.947 68.76 6.23 8 0.38% 2.7 71% 1.41 0.00 1.41 0 0.95 0.04 0.98 1.0 0.054 32.26 38.49 0.067 1.25 0.94 0.14 0.80 1.20 1.0 0.034 4.07 25.35 0.071 4.32 2.79 2 1.7 5.3668 0.5138 6.233
10.006 5597.43 4.5 0.016 4.3 44.0 19.08 0.35%Slime Tailings 0.057 113.1 0.56 0.21 0.35 1 1.70 7.225 100.43 8.93 11 0.40% 2.5 71% 1.42 0.00 1.42 0 0.95 0.04 0.98 1.0 0.054 33.20 42.13 0.070 1.31 0.94 0.17 0.80 1.20 1.0 0.035 3.02 27.02 0.073 4.36 2.83 2 1.7 7.6922 0.7364 8.934
10.170 5597.27 22.4 0.010 22.4 7.4 3.19 0.04%Sand-Slime Tailing 0.059 119.0 0.57 0.22 0.35 1 1.70 37.995 528.13 44.22 62 0.05% 1.7 47% 1.43 0.00 1.43 0 0.95 0.07 0.97 1.0 0.053 45.81 90.03 0.127 2.39 0.94 0.38 0.80 1.20 1.0 0.035 1.02 45.30 0.088 5.20 3.80 2 1.7 38.073 3.6451 44.220
10.335 5597.11 9.5 0.106 9.4 6.7 2.89 1.12%Sand-Slime Tailing 0.059 119.0 0.58 0.22 0.36 1 1.70 15.997 222.36 18.66 25 1.19% 2.4 47% 1.44 0.00 1.44 0 0.95 0.05 0.97 1.0 0.053 36.85 55.51 0.083 1.55 0.94 0.25 0.80 1.19 1.0 0.035 2.51 46.77 0.089 5.21 3.38 2 1.7 16.068 1.5383 18.662
10.499 5596.94 7.7 0.177 7.6 9.0 3.88 2.30%Slime Tailings 0.057 113.1 0.59 0.23 0.36 1 1.70 12.971 180.30 15.18 20 2.49% 2.7 71% 1.45 0.00 1.45 0 0.95 0.05 0.97 1.0 0.053 35.37 50.55 0.078 1.46 0.94 0.22 0.80 1.19 1.0 0.035 4.07 61.73 0.102 5.90 3.68 2 1.7 13.066 1.2509 15.175
10.663 5596.78 6.4 0.128 6.3 17.8 7.70 2.00%Slime Tailings 0.057 113.1 0.60 0.23 0.36 1 1.70 10.693 148.63 12.64 16 2.20% 2.8 71% 1.46 0.00 1.46 0 0.95 0.05 0.98 1.0 0.053 34.49 47.13 0.075 1.40 0.94 0.21 0.80 1.19 1.0 0.035 4.41 55.68 0.096 5.50 3.45 2 1.7 10.882 1.0418 12.638
10.827 5596.61 4.4 0.090 4.2 34.3 14.84 2.04%Slime Tailings 0.057 113.1 0.60 0.24 0.37 1 1.70 7.123 99.01 8.70 10 2.37% 2.9 71% 1.46 0.00 1.46 0 0.95 0.04 0.98 1.0 0.053 33.12 41.81 0.070 1.31 0.94 0.17 0.80 1.19 1.0 0.035 5.98 52.01 0.093 5.27 3.29 2 1.7 7.4865 0.7168 8.695
10.991 5596.45 5.0 0.031 4.7 52.3 22.65 0.62%Slime Tailings 0.057 113.1 0.61 0.24 0.37 1 1.70 7.990 111.06 9.92 12 0.70% 2.6 71% 1.47 0.00 1.47 0 0.94 0.05 0.98 1.0 0.053 33.54 43.47 0.072 1.34 0.94 0.18 0.80 1.18 1.0 0.035 3.47 34.43 0.079 4.41 2.88 2 1.7 8.5447 0.8181 9.924
11.155 5596.29 3.9 0.027 3.6 49.3 21.35 0.70%Slime Tailings 0.057 113.1 0.62 0.25 0.38 1 1.70 6.052 84.12 7.64 9 0.83% 2.8 71% 1.48 0.00 1.48 0 0.94 0.04 0.98 1.0 0.053 32.75 40.38 0.069 1.29 0.94 0.16 0.80 1.18 1.0 0.035 4.61 35.20 0.079 4.40 2.85 2 1.7 6.5749 0.6295 7.636
11.319 5596.12 3.6 0.014 3.2 58.6 25.37 0.39%Slime Tailings 0.057 113.1 0.63 0.25 0.38 1 1.70 5.508 76.56 7.12 8 0.47% 2.7 71% 1.49 0.00 1.49 0 0.94 0.04 0.98 1.0 0.053 32.57 39.69 0.068 1.29 0.94 0.15 0.80 1.18 1.0 0.035 4.20 29.90 0.075 4.11 2.70 2 1.7 6.1294 0.5868 7.119
11.483 5595.96 3.7 0.010 3.3 65.7 28.48 0.27%Slime Tailings 0.057 113.1 0.64 0.26 0.38 1 1.70 5.610 77.98 7.33 8 0.33% 2.7 71% 1.50 0.00 1.50 0 0.94 0.04 0.98 1.0 0.053 32.64 39.96 0.069 1.29 0.94 0.16 0.80 1.17 1.0 0.035 3.79 27.75 0.073 3.97 2.63 2 1.7 6.3076 0.6039 7.326
11.647 5595.79 3.5 0.010 3.1 63.3 27.45 0.29%Slime Tailings 0.057 113.1 0.65 0.26 0.39 1 1.70 5.270 73.25 6.90 7 0.35% 2.7 71% 1.51 0.00 1.51 0 0.94 0.04 0.98 1.0 0.053 32.49 39.39 0.068 1.28 0.94 0.15 0.80 1.17 1.0 0.035 4.11 28.39 0.074 3.96 2.62 2 1.7 5.9422 0.5689 6.902
11.811 5595.63 3.3 0.010 2.9 65.8 28.52 0.31%Slime Tailings 0.057 113.1 0.66 0.27 0.39 1 1.70 4.862 67.58 6.46 7 0.38% 2.8 71% 1.52 0.00 1.52 0 0.94 0.04 0.98 1.0 0.053 32.34 38.79 0.068 1.28 0.93 0.15 0.80 1.17 1.0 0.035 4.51 29.12 0.074 3.95 2.61 2 1.7 5.5605 0.5324 6.458
11.975 5595.47 3.0 0.010 2.6 62.5 27.10 0.33%Slime Tailings 0.057 113.1 0.67 0.27 0.40 1 1.70 4.420 61.44 5.90 6 0.43% 2.8 71% 1.53 0.00 1.53 0 0.94 0.04 0.98 1.0 0.053 32.14 38.05 0.067 1.27 0.93 0.14 0.80 1.17 1.0 0.035 5.09 30.06 0.075 3.95 2.61 2 1.7 5.0837 0.4867 5.904
Scaling Factor for stress ration, rm
Volumetric Strain Ratio for Site-Specific Design Earthq
Equiv. Number of Uniform Strain Cycles, N
Youd et al. (2001)
CSR
M=7.5,
s'v=1atm
0.15
Earthquake Moment Magnitude, M: 5.5
Magnitude Scaling Factor, MSF:
Equil Pore
Pressure at time of
Conditions at t1 Liquefaction Triggering Analyses Idriss & Boulanger (2008)Equil
Pore
Pressure
at t1CN qc1 qc1 qc1N
Normalized Cone
Penetration Resistance, Qt
Normalized Friction
Ratio, Fr (%)
Total
Stress at
t1 Liquefiable?
1=Yes
2=No
Cyclic Stress RatioEffective
Stress at
t1
Saturated
at t1
Idriss & Boulanger (2008)
Idriss and Boulanger (2008)
Max. Horiz. Acceleration, Amax/g:
Earthquake Moment Magnitude, M:
Magnitude Scaling Factor, MSF:
WHITE MESA TAILINGS REPOSITORY LIQUEFACTION AND SEISMIC SETTLEMENT ANALYSES - 3-6N Elev. at
Top of Layer (ft)
Elev. At
Midpoint of Layer (ft)
Bottom
of Layer (ft)
Thickness of Layer (ft)
CSR
M=7.5,
s'v=1atm
Kc
High Compaction Layer
Platform/Random Fill Layer
Pw (u2)Pw (u2)
2013 CPT Data from ConeTec CPT Data Interpretations
fs/qt
Material Type (as determined
by fines
Unit Weight Unit Weight
Total Stress
at time of CPT
Depth
at time of CPT Elevation qt fs qc
Effective Stress at
time of CPT
Saturated
at time of CPT
Type Index, Ic FC
Youd, et al (2001)
Max. Horiz. Acceleration, Amax/g:
Stress at
Bottom of Layer (tsf)
Stress at
Midpoint of Layer (tsf)FINAL COVER
Erosion Protection Layer
Water Storage/Rooting Zone Layer
qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Equil Pore
Pressure at Midpoint of Layer (tsf)
Unit Weight (tcf)
Unit Weight (pcf)
Stress at
Bottom of Layer (tsf)
Stress at
Midpoint of Layer (tsf)
Pressure
at Bottom of Layer (tsf)
Cyclic Resistance Ratio
FoS
Cyclic Stress Ratio
FoS
∆qc1n qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Liquef_SeismicSettle_30Aug2015.xls Page 31 of 36
Energy Fuels Resources (USA) Inc.
White Mesa MillLiquefaction Analyses
Data File: 13-52106_SP3-6N-BSC-CPT 5604.20 Water surface elevation during CPT investigation (ft am5607.44 Ground Surface Elevation at time of CPT (ft amsl)Location: White Mesa 2013 CPT Investigation 0.15 5599.16 Water surface elevation at t0 (ft amsl)5623.62 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl)
..\..\..\6.2.3 Field Data\2013 Field Investigation\Conetec Dat 5.5 5590.44 Water surface elevation at t1 (ft amsl) 0.50 Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after pla ###### 5623.37 5623.12 0.50 0.055 110 0.028 0.014 0.00 0.00 0.028 0.014
Tailings Sands 1.69 5585.44 Water surface elevation at t2 (ft amsl)3.50 Thickness of Water Storage/Rooting Zone (ft) ###### 5621.37 5619.62 3.50 0.054 107 0.215 0.121 0.00 0.00 0.215 0.121
Tailings Sand-Slimes 3.50 Thickness of High Compaction Layer (ft)###### 5617.87 5616.12 3.50 0.060 120 0.424 0.320 0.00 0.00 0.424 0.320
Tailings Slimes 1.44 8.68 Thickness of Random/Platform Fill on on top of existing interim cover (ft) ###### 5611.78 5607.44 8.68 0.050 101 0.861 0.643 0.00 0.00 0.861 0.643
Interim Cover 0.47 1720.10 Additional Stress due to Final Cover Placement, ΔσFC (psf)
Cells Requiring User Input/Manipulation 2.21 2.21 7.51 5585.44 Elevation of bottom of tailings (liner) (ft amsl)
rd Cσ Kσ Ka rd Dr f Kσ Ka Avg CN qc1 qc1 qc1N
(ft) (ft amsl) TSF TSF TSF (ft) PSI (%) (tcf) (pcf) (tsf)(tsf)(tsf) 1=Yes TSF MPa % (tsf)(tsf)(tsf) 1=Yes FoS TSF MPa
0=No 0=No
Scaling Factor for stress ration, rm
Volumetric Strain Ratio for Site-Specific Design Earthq
Equiv. Number of Uniform Strain Cycles, N
Youd et al. (2001)
CSR
M=7.5,
s'v=1atm
0.15
Earthquake Moment Magnitude, M: 5.5
Magnitude Scaling Factor, MSF:
Equil Pore
Pressure at time of
Conditions at t1 Liquefaction Triggering Analyses Idriss & Boulanger (2008)Equil
Pore
Pressure
at t1CN qc1 qc1 qc1N
Normalized Cone
Penetration Resistance, Qt
Normalized Friction
Ratio, Fr (%)
Total
Stress at
t1 Liquefiable?
1=Yes
2=No
Cyclic Stress RatioEffective
Stress at
t1
Saturated
at t1
Idriss & Boulanger (2008)
Idriss and Boulanger (2008)
Max. Horiz. Acceleration, Amax/g:
Earthquake Moment Magnitude, M:
Magnitude Scaling Factor, MSF:
WHITE MESA TAILINGS REPOSITORY LIQUEFACTION AND SEISMIC SETTLEMENT ANALYSES - 3-6N Elev. at
Top of Layer (ft)
Elev. At
Midpoint of Layer (ft)
Bottom
of Layer (ft)
Thickness of Layer (ft)
CSR
M=7.5,
s'v=1atm
Kc
High Compaction Layer
Platform/Random Fill Layer
Pw (u2)Pw (u2)
2013 CPT Data from ConeTec CPT Data Interpretations
fs/qt
Material Type (as determined
by fines
Unit Weight Unit Weight
Total Stress
at time of CPT
Depth
at time of CPT Elevation qt fs qc
Effective Stress at
time of CPT
Saturated
at time of CPT
Type Index, Ic FC
Youd, et al (2001)
Max. Horiz. Acceleration, Amax/g:
Stress at
Bottom of Layer (tsf)
Stress at
Midpoint of Layer (tsf)FINAL COVER
Erosion Protection Layer
Water Storage/Rooting Zone Layer
qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Equil Pore
Pressure at Midpoint of Layer (tsf)
Unit Weight (tcf)
Unit Weight (pcf)
Stress at
Bottom of Layer (tsf)
Stress at
Midpoint of Layer (tsf)
Pressure
at Bottom of Layer (tsf)
Cyclic Resistance Ratio
FoS
Cyclic Stress Ratio
FoS
∆qc1n qc1n-cs
(CRR)
M=7.5,
s'v=1atm
12.139 5595.30 3.0 0.010 2.6 63.4 27.46 0.33%Slime Tailings 0.057 113.1 0.68 0.28 0.40 1 1.70 4.420 61.44 5.91 6 0.43% 2.8 71% 1.54 0.00 1.54 0 0.94 0.04 0.98 1.0 0.053 32.15 38.06 0.067 1.27 0.93 0.14 0.80 1.16 1.0 0.035 5.14 30.39 0.075 3.92 2.60 2 1.7 5.0926 0.4876 5.915
12.303 5595.14 3.8 0.019 3.3 76.0 32.92 0.50%Slime Tailings 0.057 113.1 0.69 0.28 0.41 1 1.70 5.610 77.98 7.45 8 0.62% 2.8 71% 1.55 0.00 1.55 0 0.94 0.04 0.97 1.0 0.053 32.68 40.13 0.069 1.30 0.93 0.16 0.80 1.16 1.0 0.035 4.60 34.31 0.079 4.05 2.68 2 1.7 6.4161 0.6143 7.452
12.467 5594.97 8.7 0.151 8.2 74.0 32.08 1.74%Slime Tailings 0.057 113.1 0.70 0.29 0.41 1 1.70 13.957 194.00 17.12 19 1.89% 2.6 71% 1.56 0.00 1.56 0 0.93 0.05 0.97 1.0 0.052 36.05 53.17 0.081 1.54 0.93 0.24 0.80 1.16 1.0 0.035 3.62 61.90 0.102 5.21 3.38 2 1.7 14.743 1.4115 17.123
12.631 5594.81 7.3 0.133 7.1 27.0 11.70 1.82%Slime Tailings 0.057 113.1 0.71 0.29 0.41 1 1.70 12.121 168.48 14.41 16 2.02% 2.7 71% 1.57 0.00 1.57 0 0.93 0.05 0.97 1.0 0.052 35.11 49.52 0.077 1.47 0.93 0.22 0.80 1.16 1.0 0.036 4.24 61.11 0.101 5.12 3.30 2 1.7 12.408 1.1879 14.411
12.795 5594.64 3.8 0.056 3.5 42.3 18.33 1.49%Slime Tailings 0.057 113.1 0.72 0.30 0.42 1 1.70 5.950 82.71 7.43 7 1.84% 3.0 71% 1.58 0.00 1.58 0 0.93 0.04 0.97 1.0 0.052 32.68 40.11 0.069 1.31 0.93 0.16 0.80 1.16 1.0 0.036 6.74 50.12 0.092 4.60 2.95 2 1.7 6.3988 0.6126 7.432
12.959 5594.48 3.5 0.039 3.2 47.7 20.68 1.12%Slime Tailings 0.057 113.1 0.73 0.30 0.42 1 1.70 5.423 75.38 6.89 7 1.41% 3.0 71% 1.59 0.00 1.59 0 0.93 0.04 0.97 1.0 0.052 32.49 39.37 0.068 1.30 0.93 0.15 0.80 1.15 1.0 0.036 6.60 45.43 0.088 4.36 2.83 2 1.7 5.9295 0.5677 6.887
13.123 5594.32 3.6 0.039 3.3 47.0 20.38 1.08%Slime Tailings 0.057 113.1 0.73 0.31 0.43 1 1.70 5.627 78.22 7.12 7 1.36% 3.0 71% 1.59 0.00 1.59 0 0.93 0.04 0.97 1.0 0.052 32.57 39.68 0.068 1.31 0.93 0.15 0.80 1.15 1.0 0.036 6.40 45.53 0.088 4.32 2.82 2 1.7 6.1261 0.5865 7.115
13.287 5594.15 3.8 0.053 3.5 53.2 23.07 1.38%Slime Tailings 0.057 113.1 0.74 0.31 0.43 1 1.70 5.950 82.71 7.57 7 1.72% 3.0 71% 1.60 0.00 1.60 0 0.93 0.04 0.97 1.0 0.052 32.72 40.29 0.069 1.32 0.93 0.16 0.80 1.15 1.0 0.036 6.65 50.32 0.092 4.47 2.90 2 1.7 6.5149 0.6237 7.567
13.451 5593.99 4.6 0.055 4.3 58.0 25.13 1.19%Slime Tailings 0.057 113.1 0.75 0.32 0.43 1 1.70 7.259 100.90 9.15 9 1.42% 2.9 71% 1.61 0.00 1.61 0 0.93 0.04 0.97 1.0 0.052 33.27 42.42 0.071 1.36 0.93 0.17 0.80 1.15 1.0 0.036 5.40 49.36 0.091 4.40 2.88 2 1.7 7.8745 0.7539 9.146
13.615 5593.82 5.4 0.050 5.1 51.5 22.33 0.92%Slime Tailings 0.057 113.1 0.76 0.32 0.44 1 1.69 8.639 120.08 10.67 11 1.07% 2.7 71% 1.62 0.00 1.62 0 0.93 0.05 0.97 1.0 0.052 33.80 44.47 0.072 1.39 0.93 0.19 0.80 1.14 1.0 0.036 4.34 46.27 0.089 4.24 2.81 2 1.693906 9.1838 0.8793 10.666
13.779 5593.66 4.7 0.059 4.3 53.8 23.30 1.26%Slime Tailings 0.057 113.1 0.77 0.33 0.44 1 1.68 7.298 101.44 9.13 9 1.51% 2.9 71% 1.63 0.00 1.63 0 0.92 0.04 0.97 1.0 0.052 33.27 42.40 0.071 1.36 0.93 0.17 0.80 1.14 1.0 0.036 5.57 50.85 0.092 4.37 2.87 2 1.681453 7.862 0.7527 9.131
13.943 5593.50 4.5 0.065 4.2 53.8 23.33 1.45%Slime Tailings 0.057 113.1 0.78 0.33 0.45 1 1.67 6.927 96.29 8.70 8 1.75% 2.9 71% 1.64 0.00 1.64 0 0.92 0.04 0.97 1.0 0.052 33.12 41.81 0.070 1.35 0.93 0.17 0.80 1.14 1.0 0.036 6.12 53.22 0.094 4.42 2.89 2 1.669208 7.4881 0.7169 8.697
14.107 5593.33 4.6 0.067 4.3 54.2 23.47 1.45%Slime Tailings 0.057 113.1 0.79 0.34 0.45 1 1.66 7.093 98.59 8.89 8 1.75% 2.9 71% 1.65 0.00 1.65 0 0.92 0.04 0.97 1.0 0.052 33.18 42.07 0.070 1.36 0.93 0.17 0.80 1.14 1.0 0.036 6.02 53.54 0.094 4.40 2.88 2 1.657163 7.6529 0.7327 8.888
14.271 5593.17 4.6 0.064 4.3 55.3 23.95 1.38%Slime Tailings 0.057 113.1 0.80 0.34 0.46 1 1.65 7.042 97.88 8.84 8 1.67% 2.9 71% 1.66 0.00 1.66 0 0.92 0.04 0.97 1.0 0.052 33.17 42.00 0.070 1.36 0.93 0.17 0.80 1.14 1.0 0.036 5.96 52.69 0.094 4.33 2.85 2 1.645315 7.6096 0.7285 8.838
14.436 5593.00 4.7 0.050 4.3 52.5 22.75 1.07%Slime Tailings 0.057 113.1 0.81 0.35 0.46 1 1.63 7.090 98.55 8.86 8 1.30% 2.9 71% 1.67 0.00 1.67 0 0.92 0.04 0.97 1.0 0.052 33.17 42.03 0.070 1.36 0.92 0.17 0.80 1.13 1.0 0.036 5.44 48.21 0.090 4.14 2.75 2 1.633658 7.6255 0.7301 8.857
14.600 5592.84 3.9 0.045 3.6 48.9 21.19 1.14%Slime Tailings 0.057 113.1 0.82 0.35 0.46 1 1.62 5.905 82.08 7.43 7 1.44% 3.0 71% 1.68 0.00 1.68 0 0.92 0.04 0.97 1.0 0.052 32.68 40.11 0.069 1.33 0.92 0.16 0.80 1.13 1.0 0.036 6.51 48.41 0.090 4.12 2.73 2 1.622188 6.3999 0.6127 7.433
14.764 5592.68 3.7 0.025 3.4 47.0 20.37 0.68%Slime Tailings 0.057 113.1 0.83 0.36 0.47 1 1.61 5.477 76.13 6.91 6 0.87% 2.9 71% 1.69 0.00 1.69 0 0.92 0.04 0.97 1.0 0.051 32.49 39.40 0.068 1.32 0.92 0.15 0.80 1.13 1.0 0.036 5.93 40.97 0.084 3.81 2.57 2 1.6109 5.9497 0.5696 6.910
14.928 5592.51 3.7 0.014 3.5 43.2 18.70 0.38%Slime Tailings 0.057 113.1 0.84 0.36 0.47 1 1.60 5.535 76.94 6.93 6 0.48% 2.8 71% 1.70 0.00 1.70 0 0.92 0.04 0.97 1.0 0.051 32.50 39.43 0.068 1.33 0.92 0.15 0.80 1.13 1.0 0.036 5.06 35.03 0.079 3.56 2.44 2 1.599789 5.9662 0.5712 6.929
15.092 5592.35 4.0 0.031 3.7 46.9 20.31 0.77%Slime Tailings 0.057 113.1 0.85 0.37 0.48 1 1.59 5.911 82.16 7.40 7 0.98% 2.9 71% 1.71 0.00 1.71 0 0.91 0.04 0.97 1.0 0.051 32.67 40.07 0.069 1.34 0.92 0.16 0.80 1.13 1.0 0.036 5.81 42.99 0.086 3.83 2.58 2 1.588851 6.3753 0.6104 7.405
15.256 5592.18 6.6 0.057 6.5 28.1 12.19 0.86%Slime Tailings 0.057 113.1 0.86 0.37 0.48 1 1.58 10.179 141.48 12.14 12 0.99% 2.7 71% 1.72 0.00 1.72 0 0.91 0.05 0.97 1.0 0.051 34.32 46.46 0.074 1.45 0.92 0.20 0.80 1.12 1.0 0.036 3.86 46.90 0.089 3.94 2.70 2 1.578083 10.456 1.001 12.144
15.420 5592.02 6.4 0.065 6.1 51.6 22.37 1.02%Slime Tailings 0.057 113.1 0.86 0.38 0.48 1 1.57 9.515 132.25 11.64 11 1.18% 2.7 71% 1.72 0.00 1.72 0 0.91 0.05 0.97 1.0 0.051 34.14 45.78 0.074 1.44 0.92 0.20 0.80 1.12 1.0 0.036 4.27 49.65 0.091 4.02 2.73 2 1.567479 10.02 0.9593 11.637
15.584 5591.86 6.4 0.063 6.0 64.8 28.06 0.98%Slime Tailings 0.057 113.1 0.87 0.39 0.49 1 1.56 9.358 130.07 11.60 11 1.14% 2.7 71% 1.73 0.00 1.73 0 0.91 0.05 0.97 1.0 0.051 34.13 45.73 0.074 1.44 0.92 0.20 0.80 1.12 1.0 0.036 4.23 49.10 0.091 3.97 2.71 2 1.557036 9.9872 0.9562 11.599
15.748 5591.69 6.6 0.049 6.2 68.5 29.69 0.74%Sand-Slime Tailing 0.059 119.0 0.88 0.39 0.49 1 1.55 9.583 133.20 11.90 12 0.85% 2.7 47% 1.74 0.00 1.74 0 0.91 0.05 0.97 1.0 0.051 34.47 46.37 0.074 1.46 0.91 0.20 0.80 1.12 1.0 0.036 3.75 44.62 0.087 3.77 2.62 2 1.545575 10.244 0.9807 11.897
15.912 5591.53 7.0 0.046 6.5 70.8 30.66 0.66%Sand-Slime Tailing 0.059 119.0 0.89 0.40 0.50 1 1.53 10.004 139.05 12.41 12 0.76% 2.6 47% 1.75 0.00 1.75 0 0.91 0.05 0.97 1.0 0.051 34.65 47.06 0.075 1.47 0.91 0.20 0.80 1.12 1.0 0.036 3.49 43.25 0.086 3.70 2.58 2 1.534305 10.681 1.0226 12.406
16.076 5591.36 7.2 0.048 6.7 83.5 36.19 0.67%Sand-Slime Tailing 0.059 119.0 0.90 0.40 0.50 1 1.52 10.129 140.80 12.69 12 0.77% 2.6 47% 1.76 0.00 1.76 0 0.91 0.05 0.97 1.0 0.051 34.75 47.44 0.075 1.48 0.91 0.21 0.80 1.11 1.0 0.036 3.44 43.65 0.086 3.68 2.58 2 1.52322 10.924 1.0458 12.687
16.240 5591.20 7.2 0.050 6.7 88.8 38.47 0.69%Sand-Slime Tailing 0.059 119.0 0.91 0.41 0.51 1 1.51 10.072 140.00 12.67 12 0.79% 2.6 47% 1.77 0.00 1.77 0 0.91 0.05 0.97 1.0 0.051 34.75 47.42 0.075 1.48 0.91 0.21 0.80 1.11 1.0 0.036 3.49 44.25 0.087 3.67 2.58 2 1.512317 10.91 1.0445 12.671
16.404 5591.04 9.0 0.044 8.4 98.8 42.80 0.49%Sand-Slime Tailing 0.059 119.0 0.92 0.41 0.51 1 1.50 12.583 174.91 15.69 16 0.54% 2.5 47% 1.78 0.00 1.78 0 0.90 0.05 0.96 1.0 0.050 35.80 51.49 0.079 1.57 0.91 0.23 0.80 1.11 1.0 0.036 2.60 40.77 0.084 3.52 2.55 2 1.501589 13.509 1.2934 15.690
16.568 5590.87 9.0 0.056 8.4 104.5 45.27 0.62%Sand-Slime Tailing 0.059 119.0 0.93 0.42 0.52 1 1.49 12.495 173.68 15.64 16 0.69% 2.5 47% 1.79 0.00 1.79 0 0.90 0.05 0.96 1.0 0.050 35.79 51.43 0.079 1.57 0.91 0.23 0.80 1.11 1.0 0.036 2.82 44.05 0.087 3.61 2.59 2 1.491034 13.467 1.2894 15.642
16.732 5590.71 8.9 0.052 8.3 94.1 40.78 0.58%Sand-Slime Tailing 0.059 119.0 0.94 0.42 0.52 1 1.48 12.319 171.23 15.32 15 0.65% 2.5 47% 1.80 0.00 1.80 0 0.90 0.05 0.96 1.0 0.050 35.67 50.99 0.078 1.56 0.91 0.23 0.80 1.11 1.0 0.036 2.81 43.12 0.086 3.55 2.56 2 1.480646 13.189 1.2627 15.318
16.896 5590.54 8.2 0.074 7.6 99.3 43.01 0.90%Sand-Slime Tailing 0.059 119.0 0.95 0.43 0.53 1 1.47 11.205 155.74 14.07 14 1.02% 2.6 47% 1.81 0.00 1.81 0 0.90 0.05 0.96 1.0 0.050 35.24 49.31 0.077 1.53 0.90 0.22 0.80 1.10 1.0 0.036 3.53 49.61 0.091 3.75 2.64 2 1.470421 12.116 1.16 14.072
17.060 5590.38 8.3 0.057 7.7 101.1 43.83 0.68%Sand-Slime Tailing 0.059 119.0 0.96 0.43 0.53 1 1.46 11.230 156.10 14.11 14 0.77% 2.6 47% 1.82 0.00 1.82 1 0.90 0.05 0.96 1.0 0.050 35.25 49.37 0.077 1.53 0.90 0.22 0.80 1.10 1.0 0.036 3.20 45.13 0.088 3.57 2.55 2 1.460356 12.152 1.1635 14.114
17.224 5590.22 8.1 0.045 7.5 92.6 40.14 0.56%Sand-Slime Tailing 0.059 119.0 0.97 0.44 0.54 1 1.45 10.878 151.21 13.61 13 0.63% 2.6 47% 1.83 0.01 1.82 1 0.90 0.05 0.96 1.0 0.050 35.07 48.68 0.076 1.52 0.90 0.21 0.80 1.10 1.0 0.036 3.09 42.01 0.085 3.43 2.47 2 1.450447 11.717 1.1218 13.609
17.388 5590.05 6.7 0.047 6.0 104.9 45.45 0.70%Sand-Slime Tailing 0.059 119.0 0.98 0.44 0.54 1 1.44 8.687 120.75 11.19 11 0.82% 2.7 47% 1.84 0.01 1.83 1 0.90 0.05 0.97 1.0 0.050 34.22 45.41 0.073 1.45 0.90 0.19 0.80 1.10 1.0 0.036 3.97 44.45 0.087 3.47 2.46 2 1.440689 9.6307 0.922 11.185
17.552 5589.89 6.6 0.046 6.0 96.3 41.71 0.70%Sand-Slime Tailing 0.059 119.0 0.99 0.45 0.54 1 1.43 8.544 118.76 10.92 10 0.82% 2.7 47% 1.85 0.02 1.83 1 0.90 0.05 0.97 1.0 0.050 34.13 45.05 0.073 1.45 0.90 0.19 0.80 1.10 1.0 0.037 4.06 44.36 0.087 3.44 2.44 2 1.43108 9.4034 0.9003 10.922
17.716 5589.72 6.0 0.052 5.5 92.4 40.06 0.86%Slime Tailings 0.057 113.1 1.00 0.45 0.55 1 1.42 7.782 108.16 9.99 9 1.03% 2.8 71% 1.86 0.02 1.84 1 0.89 0.05 0.97 1.0 0.051 33.57 43.56 0.072 1.42 0.90 0.18 0.80 1.09 1.0 0.037 4.73 47.21 0.089 3.50 2.46 2 1.422587 8.6025 0.8236 9.991
17.880 5589.56 5.7 0.042 5.2 93.9 40.69 0.73%Slime Tailings 0.057 113.1 1.01 0.46 0.55 1 1.41 7.283 101.24 9.42 9 0.89% 2.8 71% 1.87 0.03 1.84 1 0.89 0.04 0.97 1.0 0.051 33.37 42.79 0.071 1.40 0.90 0.18 0.80 1.09 1.0 0.037 4.73 44.60 0.087 3.38 2.39 2 1.414208 8.1121 0.7767 9.422
18.044 5589.40 6.1 0.034 5.6 77.5 33.57 0.56%Slime Tailings 0.057 113.1 1.02 0.46 0.56 1 1.41 7.873 109.44 9.93 9 0.67% 2.7 71% 1.88 0.03 1.85 1 0.89 0.05 0.97 1.0 0.051 33.55 43.48 0.072 1.41 0.90 0.18 0.80 1.09 1.0 0.037 4.15 41.21 0.084 3.25 2.33 2 1.405941 8.5532 0.8189 9.934
18.208 5589.23 5.2 0.036 4.7 84.2 36.50 0.69%Slime Tailings 0.057 113.1 1.03 0.47 0.56 1 1.40 6.570 91.32 8.48 7 0.86% 2.8 71% 1.89 0.04 1.85 1 0.89 0.04 0.97 1.0 0.051 33.04 41.53 0.070 1.38 0.89 0.17 0.80 1.09 1.0 0.037 5.14 43.60 0.086 3.29 2.33 2 1.397782 7.3045 0.6993 8.484
18.372 5589.07 5.4 0.036 4.9 84.8 36.76 0.66%Slime Tailings 0.057 113.1 1.04 0.47 0.57 1 1.39 6.824 94.85 8.78 8 0.82% 2.8 71% 1.90 0.04 1.85 1 0.89 0.04 0.97 1.0 0.051 33.15 41.93 0.070 1.38 0.89 0.17 0.80 1.09 1.0 0.037 4.92 43.24 0.086 3.25 2.32 2 1.389731 7.5595 0.7238 8.780
18.537 5588.90 6.0 0.036 5.4 86.7 37.59 0.60%Slime Tailings 0.057 113.1 1.05 0.48 0.57 1 1.38 7.489 104.10 9.57 9 0.73% 2.8 71% 1.91 0.05 1.86 1 0.89 0.04 0.97 1.0 0.051 33.42 42.99 0.071 1.40 0.89 0.18 0.80 1.09 1.0 0.037 4.42 42.33 0.085 3.20 2.30 2 1.381785 8.2375 0.7887 9.567
Liquef_SeismicSettle_30Aug2015.xls Page 32 of 36
Energy Fuels Resources (USA) Inc.
White Mesa MillLiquefaction Analyses
Data File: 13-52106_SP3-8N-BSC-CPT 5604.90 Water surface elevation during CPT investigation (f5608.37 Ground Surface Elevation at time of CPT (ft amsl)Location: White Mesa 2013 CPT Investigation 0.15 5600.09 Water surface elevation at t0 (ft amsl)5623.82 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl)
..\..\..\6.2.3 Field Data\2013 Field Investigation\Conetec Dat 5.5 5595.24 Water surface elevation at t1 (ft amsl) 0.50 Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after pla ###### 5623.57 5623.32 0.50 0.055 110 0.028 0.014 0.00 0.00 0.028 0.014
Tailings Sands 1.69 5590.24 Water surface elevation at t2 (ft amsl)3.50 Thickness of Water Storage/Rooting Zone (ft) ######5621.57 5619.82 3.50 0.054 107 0.215 0.121 0.00 0.00 0.215 0.121
Tailings Sand-Slimes 3.50 Thickness of High Compaction Layer (ft)###### 5618.07 5616.32 3.50 0.060 120 0.424 0.320 0.00 0.00 0.424 0.320
Tailings Slimes 1.44 7.95 Thickness of Random/Platform Fill on on top of existing interim cover (ft) ###### 5612.35 5608.37 7.95 0.050 101 0.825 0.624 0.00 0.00 0.825 0.624
Interim Cover 0.47 1646.57 Additional Stress due to Final Cover Placement, ΔσFC (psf)
Cells Requiring User Input/Manipulation 2.21 2.21 7.51 5590.24 Elevation of bottom of tailings (liner) (ft amsl)
rd Cσ Kσ Ka rd Dr f Kσ Ka Avg CN qc1 qc1 qc1N
(ft) (ft amsl) TSF TSF TSF (ft) PSI (%) (tcf) (pcf) (tsf)(tsf)(tsf) 1=Yes TSF MPa % (tsf)(tsf)(tsf) 1=Yes FoS TSF MPa
0=No 0=No
0.164 5608.21 4.6 0.040 4.6 1.7 0.73 0.87%Interim Cover 0.050 100.7 0.01 0.00 0.01 0 1.70 7.837 108.93 9.12 558 0.87% 1.4 51% 0.83 0.00 0.83 0 1.00 0.04 1.00 1.0 0.058 33.52 42.65 0.071 1.22 0.96 0.17 0.80 2.53 1.0 0.017 1.00 9.12 0.058 141.30 71.26 2 1.7 7.8549 0.752 9.123
0.328 5608.04 22.0 0.044 22.0 2.8 1.22 0.20%Interim Cover 0.050 100.7 0.02 0.00 0.02 0 1.70 37.315 518.68 43.37 1329 0.20% 0.6 51% 0.84 0.00 0.84 0 1.00 0.07 1.00 1.0 0.058 45.54 88.92 0.125 2.16 0.96 0.38 0.80 2.20 1.0 0.019 1.00 43.37 0.086 105.69 53.93 2 1.7 37.345 3.5754 43.374
0.492 5607.88 41.2 0.114 41.1 4.2 1.81 0.28%Interim Cover 0.050 100.7 0.02 0.00 0.02 0 1.70 69.938 972.14 81.28 1660 0.28% 0.7 51% 0.85 0.00 0.85 0 1.00 0.09 1.00 1.0 0.058 58.84 140.12 0.233 4.02 0.96 0.52 0.74 2.52 1.0 0.017 1.00 81.28 0.130 106.34 55.18 2 1.7 69.982 6.7001 81.280
0.656 5607.71 59.5 0.362 59.4 4.7 2.05 0.61%Interim Cover 0.050 100.7 0.03 0.00 0.03 0 1.70 101.031 ###### 117.40 1798 0.61% 1.0 51% 0.86 0.00 0.86 0 1.00 0.12 1.00 1.0 0.058 71.52 188.92 0.721 12.47 0.96 0.63 0.69 2.77 1.0 0.015 1.00 117.40 0.230 141.52 76.99 2 1.7 101.08 9.6775 117.400
0.820 5607.55 65.8 0.430 65.7 4.5 1.93 0.65%Interim Cover 0.050 100.7 0.04 0.00 0.04 0 1.70 111.758 ###### 129.86 1591 0.65% 1.1 51% 0.86 0.00 0.86 0 1.00 0.13 1.00 1.0 0.058 75.89 205.75 1.000 17.31 0.96 0.66 0.67 2.72 1.0 0.016 1.00 129.86 0.284 139.38 78.34 2 1.7 111.81 10.704 129.855
0.984 5607.39 69.7 0.402 69.6 3.8 1.66 0.58%Interim Cover 0.050 100.7 0.05 0.00 0.05 0 1.70 118.371 ###### 137.53 1404 0.58% 1.0 51% 0.87 0.00 0.87 0 1.00 0.14 1.00 1.0 0.058 78.58 216.11 1.000 17.33 0.96 0.68 0.66 2.63 1.0 0.016 1.00 137.53 0.322 131.88 74.60 2 1.7 118.41 11.337 137.528
1.148 5607.22 68.4 0.655 68.4 3.8 1.64 0.96%Interim Cover 0.050 100.7 0.06 0.00 0.06 0 1.70 116.314 ###### 135.14 1183 0.96% 1.3 51% 0.88 0.00 0.88 0 1.00 0.14 1.00 1.0 0.058 77.74 212.88 1.000 17.35 0.96 0.67 0.66 2.48 1.0 0.017 1.00 135.14 0.310 108.73 63.04 2 1.7 116.35 11.14 135.138
1.312 5607.06 77.9 0.651 77.9 3.0 1.29 0.84%Interim Cover 0.050 100.7 0.07 0.00 0.07 0 1.70 132.464 ###### 153.89 1178 0.84% 1.2 51% 0.89 0.00 0.89 0 1.00 0.17 0.99 1.0 0.057 84.32 238.21 1.000 17.39 0.96 0.72 0.64 2.51 1.0 0.017 1.00 153.89 0.419 128.81 73.10 2 1.7 132.5 12.685 153.886
1.476 5606.89 71.1 0.676 71.0 6.8 2.96 0.95%Interim Cover 0.050 100.7 0.07 0.00 0.07 0 1.70 120.768 ###### 140.35 955 0.95% 1.3 51% 0.90 0.00 0.90 0 1.00 0.15 0.99 1.0 0.057 79.57 219.92 1.000 17.41 0.96 0.68 0.66 2.31 1.0 0.018 1.00 140.35 0.337 92.18 54.79 2 1.7 120.84 11.569 140.349
1.640 5606.73 61.8 0.871 61.7 6.0 2.61 1.41%Interim Cover 0.050 100.7 0.08 0.00 0.08 0 1.70 104.941 ###### 121.96 747 1.41% 1.5 51% 0.91 0.00 0.91 0 1.00 0.13 0.99 1.0 0.057 73.12 195.08 0.917 15.97 0.96 0.64 0.68 2.11 1.0 0.020 1.00 121.96 0.249 61.23 38.60 2 1.7 105 10.053 121.957
1.804 5606.57 70.3 1.290 70.3 5.1 2.22 1.83%Interim Cover 0.050 100.7 0.09 0.00 0.09 0 1.70 119.476 ###### 138.83 773 1.84% 1.6 51% 0.91 0.00 0.91 0 1.00 0.15 0.99 1.0 0.057 79.04 217.87 1.000 17.45 0.96 0.68 0.66 2.15 1.0 0.020 1.00 138.83 0.329 73.63 45.54 2 1.7 119.53 11.444 138.827
1.968 5606.40 106.9 2.471 106.9 8.4 3.62 2.31%Interim Cover 0.050 100.7 0.10 0.00 0.10 0 1.70 181.679 ###### 211.11 1078 2.31% 1.6 51% 0.92 0.00 0.92 0 1.00 0.30 0.98 1.0 0.057 104.41 315.52 1.000 17.68 0.96 0.84 0.60 2.37 1.0 0.018 1.00 210.84 1.000 205.32 111.50 2 1.7 181.77 17.402 211.112
2.133 5606.24 99.5 2.832 99.4 11.5 4.99 2.85%Interim Cover 0.050 100.7 0.11 0.00 0.11 0 1.70 168.997 ###### 196.42 925 2.85% 1.7 51% 0.93 0.00 0.93 0 1.00 0.25 0.98 1.0 0.057 99.25 295.67 1.000 17.67 0.96 0.81 0.60 2.30 1.0 0.018 1.07 210.34 1.000 189.61 103.64 2 1.7 169.12 16.191 196.422
2.297 5606.07 93.6 3.017 93.6 6.8 2.93 3.22%Interim Cover 0.050 100.7 0.12 0.00 0.12 0 1.70 159.035 ###### 184.79 808 3.23% 1.8 51% 0.94 0.00 0.94 0 1.00 0.22 0.98 1.0 0.057 95.17 279.96 1.000 17.68 0.96 0.78 0.61 2.20 1.0 0.019 1.12 206.98 1.000 176.13 96.91 2 1.7 159.11 15.233 184.793
2.461 5605.91 68.6 2.531 68.6 1.4 0.62 3.69%Interim Cover 0.050 100.7 0.12 0.00 0.12 0 1.70 116.569 ###### 135.41 552 3.70% 1.9 51% 0.95 0.00 0.95 0 1.00 0.14 0.99 1.0 0.057 77.84 213.24 1.000 17.59 0.96 0.67 0.66 1.92 1.0 0.022 1.22 165.03 1.000 164.46 91.02 2 1.7 116.58 11.162 135.406
2.625 5605.75 95.3 2.541 95.3 9.0 3.88 2.67%Interim Cover 0.050 100.7 0.13 0.00 0.13 0 1.70 161.976 ###### 188.24 720 2.67% 1.8 51% 0.96 0.00 0.96 0 1.00 0.23 0.98 1.0 0.056 96.38 284.61 1.000 17.80 0.96 0.79 0.60 2.10 1.0 0.020 1.08 202.56 1.000 154.24 86.02 2 1.7 162.07 15.517 188.236
2.789 5605.58 99.4 3.003 99.4 5.2 2.27 3.02%Interim Cover 0.050 100.7 0.14 0.00 0.14 0 1.70 168.912 ###### 196.25 707 3.03% 1.8 51% 0.96 0.00 0.96 0 0.99 0.25 0.97 1.0 0.056 99.19 295.43 1.000 17.90 0.96 0.81 0.60 2.07 1.0 0.020 1.11 218.70 1.000 145.22 81.56 2 1.7 168.97 16.177 196.246
2.953 5605.42 96.2 3.312 96.2 12.2 5.30 3.44%Interim Cover 0.050 100.7 0.15 0.00 0.15 0 1.70 163.489 ###### 190.03 646 3.45% 1.9 51% 0.97 0.00 0.97 0 0.99 0.24 0.97 1.0 0.056 97.01 287.04 1.000 17.91 0.96 0.80 0.60 2.01 1.0 0.021 1.17 221.96 1.000 137.21 77.56 2 1.7 163.62 15.665 190.033
3.117 5605.25 92.1 3.557 92.0 12.7 5.51 3.86%Interim Cover 0.050 100.7 0.16 0.00 0.16 0 1.70 156.451 ###### 181.87 586 3.87% 1.9 51% 0.98 0.00 0.98 0 0.99 0.22 0.97 1.0 0.056 94.14 276.01 1.000 17.92 0.96 0.78 0.61 1.94 1.0 0.022 1.23 223.34 1.000 130.04 73.98 2 1.7 156.59 14.992 181.865
3.281 5605.09 80.8 3.387 80.6 37.5 16.27 4.19%Slime Tailings 0.041 82.7 0.16 0.00 0.16 0 1.70 137.037 ###### 159.62 493 4.20% 2.0 71% 0.99 0.00 0.99 0 0.99 0.17 0.98 1.0 0.056 85.67 245.30 1.000 17.86 0.96 0.73 0.64 1.83 1.0 0.023 1.30 207.57 1.000 124.71 71.28 2 1.7 137.44 13.158 159.623
3.445 5604.93 122.2 2.584 121.9 40.5 17.53 2.12%Sand Tailings 0.051 102.8 0.17 0.00 0.17 0 1.61 195.753 ###### 227.83 708 2.12% 1.7 18% 1.00 0.00 1.00 0 0.99 0.30 0.96 1.0 0.055 80.33 308.16 1.000 18.24 0.96 0.87 0.60 1.90 1.0 0.022 1.01 231.08 1.000 118.64 68.44 2 1.605714 196.16 18.78 227.826
3.609 5604.76 107.6 2.292 107.6 12.0 5.18 2.13%Sand-Slime Tailing 0.059 119.0 0.18 0.00 0.18 1 1.66 178.278 ###### 207.20 605 2.13% 1.7 47% 1.01 0.00 1.01 0 0.99 0.29 0.96 1.0 0.055 102.97 310.17 1.000 18.28 0.96 0.83 0.60 1.88 1.0 0.022 1.03 214.34 1.000 115.07 66.67 2 1.657319 178.4 17.08 207.203
3.773 5604.60 78.1 1.653 78.1 6.0 2.59 2.12%Sand-Slime Tailing 0.059 119.0 0.19 0.01 0.18 1 1.70 132.702 ###### 154.20 427 2.12% 1.8 47% 1.01 0.00 1.01 0 0.99 0.17 0.97 1.0 0.056 84.38 238.58 1.000 17.97 0.96 0.72 0.64 1.74 1.0 0.024 1.08 166.26 1.000 112.18 65.08 2 1.7 132.77 12.711 154.199
3.937 5604.43 66.3 1.592 66.2 9.0 3.89 2.40%Sand-Slime Tailing 0.059 119.0 0.20 0.01 0.19 1 1.70 112.540 ###### 130.82 353 2.41% 1.8 47% 1.02 0.00 1.02 0 0.99 0.14 0.98 1.0 0.056 76.18 207.00 1.000 17.92 0.95 0.66 0.67 1.66 1.0 0.025 1.14 149.61 0.391 42.84 30.38 2 1.7 112.64 10.784 130.819
4.101 5604.27 57.7 1.714 57.7 8.7 3.75 2.97%Sand-Slime Tailing 0.059 119.0 0.21 0.02 0.19 1 1.70 98.005 ###### 113.93 300 2.98% 2.0 47% 1.03 0.00 1.03 0 0.99 0.12 0.98 1.0 0.056 70.26 184.19 0.612 10.95 0.95 0.62 0.69 1.59 1.0 0.026 1.26 143.03 0.352 37.62 24.29 2 1.7 98.097 9.3918 113.934
4.265 5604.10 99.5 1.694 99.3 20.2 8.74 1.70%Sand Tailings 0.062 123.5 0.22 0.02 0.20 1 1.66 164.464 ###### 191.26 505 1.71% 1.6 18% 1.04 0.00 1.04 0 0.99 0.24 0.95 1.0 0.054 70.98 262.24 1.000 18.38 0.95 0.80 0.60 1.80 1.0 0.023 1.00 190.83 1.000 104.15 61.26 2 1.655735 164.67 15.766 191.257
4.429 5603.94 96.3 1.854 96.2 10.5 4.55 1.93%Sand Tailings 0.062 123.5 0.23 0.03 0.20 1 1.66 159.735 ###### 185.65 477 1.93% 1.7 18% 1.05 0.00 1.05 0 0.99 0.22 0.95 1.0 0.054 69.55 255.20 1.000 18.38 0.95 0.79 0.61 1.77 1.0 0.024 1.04 192.83 1.000 101.60 59.99 2 1.660272 159.84 15.303 185.649
4.593 5603.78 87.1 1.742 87.0 10.5 4.55 2.00%Sand-Slime Tailing 0.059 119.0 0.24 0.04 0.21 1 1.70 147.593 ###### 171.55 421 2.01% 1.7 47% 1.06 0.00 1.06 0 0.98 0.19 0.96 1.0 0.055 90.47 262.02 1.000 18.32 0.95 0.76 0.62 1.72 1.0 0.024 1.07 182.82 1.000 99.36 58.84 2 1.695881 147.7 14.141 171.549
4.757 5603.61 81.0 1.555 81.0 10.4 4.50 1.92%Sand-Slime Tailing 0.059 119.0 0.25 0.04 0.21 1 1.70 137.632 ###### 159.98 383 1.93% 1.7 47% 1.07 0.00 1.07 0 0.98 0.17 0.96 1.0 0.055 86.41 246.39 1.000 18.29 0.95 0.73 0.63 1.67 1.0 0.025 1.07 171.03 1.000 97.21 57.75 2 1.7 137.74 13.187 159.979
4.921 5603.45 82.4 1.088 82.4 10.5 4.56 1.32%Sand Tailings 0.062 123.5 0.26 0.05 0.22 1 1.70 139.914 ###### 162.63 381 1.32% 1.6 18% 1.08 0.00 1.08 0 0.98 0.18 0.96 1.0 0.054 63.67 226.30 1.000 18.36 0.95 0.74 0.63 1.66 1.0 0.025 1.00 162.63 1.000 94.99 56.67 2 1.699019 140.03 13.406 162.632
5.085 5603.28 81.0 1.231 80.9 13.0 5.62 1.52%Sand Tailings 0.062 123.5 0.27 0.05 0.22 1 1.70 137.217 ###### 159.53 366 1.52% 1.7 18% 1.09 0.00 1.09 0 0.98 0.17 0.96 1.0 0.054 62.87 222.40 1.000 18.38 0.95 0.73 0.64 1.64 1.0 0.026 1.02 162.38 1.000 92.87 55.63 2 1.695288 137.35 13.15 159.528
5.249 5603.12 70.7 1.164 70.7 9.2 3.98 1.65%Sand Tailings 0.062 123.5 0.28 0.06 0.23 1 1.70 120.105 ###### 139.61 312 1.65% 1.7 18% 1.10 0.00 1.10 0 0.98 0.15 0.96 1.0 0.055 57.78 197.39 1.000 18.30 0.95 0.68 0.66 1.58 1.0 0.027 1.06 148.48 0.384 34.93 26.61 2 1.7 120.2 11.508 139.608
5.413 5602.96 85.1 0.966 85.1 8.1 3.51 1.14%Sand Tailings 0.062 123.5 0.29 0.06 0.23 1 1.65 140.603 ###### 163.40 367 1.14% 1.6 18% 1.11 0.00 1.11 0 0.98 0.18 0.95 1.0 0.054 63.86 227.26 1.000 18.51 0.95 0.74 0.63 1.63 1.0 0.026 1.00 163.40 1.000 88.91 53.71 2 1.653181 140.69 13.469 163.399
5.577 5602.79 64.0 0.689 64.0 6.3 2.74 1.08%Sand Tailings 0.062 123.5 0.30 0.07 0.24 1 1.70 108.817 ###### 126.46 270 1.08% 1.6 18% 1.12 0.00 1.12 0 0.98 0.13 0.96 1.0 0.055 54.42 180.88 0.550 10.08 0.95 0.65 0.68 1.52 1.0 0.028 1.00 126.46 0.268 23.34 16.71 2 1.7 108.88 10.425 126.462
5.741 5602.63 47.9 0.475 47.9 3.6 1.57 0.99%Sand Tailings 0.062 123.5 0.31 0.07 0.24 1 1.70 81.396 ###### 94.58 198 1.00% 1.7 18% 1.14 0.00 1.14 0 0.98 0.10 0.97 1.0 0.055 46.27 140.85 0.235 4.28 0.95 0.56 0.72 1.43 1.0 0.029 1.03 97.70 0.167 14.22 9.25 2 1.7 81.434 7.7965 94.581
5.905 5602.46 40.9 0.332 40.9 2.7 1.18 0.81%Sand Tailings 0.062 123.5 0.32 0.08 0.25 1 1.70 69.462 965.52 80.71 165 0.82% 1.7 18% 1.15 0.00 1.15 0 0.98 0.09 0.97 1.0 0.055 42.72 123.43 0.187 3.40 0.95 0.52 0.74 1.38 1.0 0.030 1.03 83.17 0.134 11.16 7.28 2 1.7 69.491 6.6531 80.710
6.069 5602.30 39.0 0.287 39.0 2.6 1.11 0.74%Sand Tailings 0.062 123.5 0.33 0.08 0.25 1 1.70 66.317 921.81 77.05 154 0.74% 1.7 18% 1.16 0.00 1.16 0 0.98 0.09 0.97 1.0 0.055 41.79 118.84 0.177 3.22 0.95 0.51 0.75 1.37 1.0 0.031 1.03 79.07 0.126 10.32 6.77 2 1.7 66.344 6.3518 77.055
6.234 5602.14 40.0 0.341 40.0 2.0 0.85 0.85%Sand Tailings 0.062 123.5 0.34 0.09 0.26 1 1.70 67.932 944.25 78.92 155 0.86% 1.7 18% 1.17 0.00 1.17 0 0.98 0.09 0.97 1.0 0.055 42.27 121.19 0.182 3.32 0.95 0.51 0.74 1.36 1.0 0.031 1.05 83.18 0.134 10.73 7.03 2 1.7 67.953 6.5058 78.923
6.398 5601.97 40.0 0.355 40.0 2.8 1.20 0.89%Sand Tailings 0.062 123.5 0.35 0.09 0.26 1 1.70 67.915 944.02 78.91 152 0.90% 1.7 18% 1.18 0.00 1.18 0 0.97 0.09 0.97 1.0 0.055 42.26 121.18 0.182 3.33 0.95 0.51 0.74 1.36 1.0 0.031 1.07 84.14 0.135 10.68 7.00 2 1.7 67.944 6.505 78.913
6.562 5601.81 40.0 0.387 40.0 3.0 1.30 0.97%Sand Tailings 0.062 123.5 0.36 0.10 0.27 1 1.70 67.915 944.02 78.92 149 0.98% 1.8 18% 1.19 0.00 1.19 0 0.97 0.09 0.97 1.0 0.055 42.26 121.18 0.182 3.33 0.95 0.51 0.74 1.35 1.0 0.031 1.09 85.86 0.139 10.75 7.04 2 1.7 67.947 6.5052 78.916
6.726 5601.64 43.0 0.411 42.9 3.4 1.47 0.96%Sand Tailings 0.062 123.5 0.37 0.10 0.27 1 1.70 72.998 ###### 84.82 157 0.97% 1.8 18% 1.20 0.00 1.20 0 0.97 0.09 0.97 1.0 0.054 43.77 128.60 0.199 3.66 0.95 0.53 0.73 1.36 1.0 0.031 1.07 91.07 0.150 11.42 7.54 2 1.7 73.034 6.9923 84.825
6.890 5601.48 43.2 0.434 43.2 4.0 1.72 1.00%Sand Tailings 0.062 123.5 0.38 0.11 0.28 1 1.70 73.406 ###### 85.31 155 1.01% 1.8 18% 1.21 0.00 1.21 0 0.97 0.09 0.97 1.0 0.054 43.90 129.20 0.201 3.70 0.95 0.53 0.73 1.35 1.0 0.031 1.09 92.69 0.154 11.50 7.60 2 1.7 73.448 7.0319 85.306
7.054 5601.32 39.0 0.417 39.0 3.6 1.56 1.07%Sand-Slime Tailing 0.059 119.0 0.39 0.11 0.28 1 1.70 66.249 920.86 76.99 138 1.08% 1.8 47% 1.22 0.00 1.22 0 0.97 0.09 0.97 1.0 0.054 57.30 134.29 0.215 3.95 0.95 0.51 0.75 1.33 1.0 0.031 1.13 86.86 0.141 10.35 7.15 2 1.7 66.287 6.3463 76.989
7.218 5601.15 35.2 0.330 35.2 3.4 1.46 0.94%Sand-Slime Tailing 0.059 119.0 0.40 0.12 0.29 1 1.70 59.840 831.78 69.54 122 0.95% 1.8 47% 1.23 0.00 1.23 0 0.97 0.08 0.97 1.0 0.054 54.69 124.23 0.189 3.47 0.95 0.48 0.76 1.30 1.0 0.032 1.13 78.48 0.125 9.03 6.25 2 1.7 59.876 5.7325 69.542
7.382 5600.99 32.9 0.239 32.9 3.5 1.53 0.73%Sand-Slime Tailing 0.059 119.0 0.41 0.12 0.29 1 1.70 55.845 776.25 64.90 112 0.74% 1.8 47% 1.24 0.00 1.24 0 0.97 0.08 0.97 1.0 0.054 53.06 117.97 0.175 3.23 0.95 0.47 0.77 1.29 1.0 0.032 1.10 71.31 0.114 8.09 5.66 2 1.7 55.882 5.3502 64.904
7.546 5600.82 30.1 0.219 30.0 3.5 1.51 0.73%Sand-Slime Tailing 0.059 119.0 0.42 0.13 0.29 1 1.70 51.051 709.61 59.34 101 0.74% 1.8 47% 1.24 0.00 1.24 0 0.97 0.08 0.97 1.0 0.054 51.11 110.45 0.161 2.96 0.95 0.44 0.78 1.27 1.0 0.033 1.13 66.87 0.108 7.55 5.26 2 1.7 51.088 4.8912 59.336
7.710 5600.66 27.5 0.248 27.5 4.2 1.82 0.90%Sand-Slime Tailing 0.059 119.0 0.43 0.13 0.30 1 1.70 46.716 649.35 54.31 91 0.92% 1.9 47% 1.25 0.00 1.25 0 0.97 0.07 0.97 1.0 0.054 49.35 103.66 0.149 2.74 0.95 0.43 0.79 1.25 1.0 0.033 1.21 65.63 0.106 7.33 5.04 2 1.7 46.761 4.4769 54.310
7.874 5600.50 19.6 0.239 19.6 6.2 2.68 1.22%Sand-Slime Tailing 0.059 119.0 0.44 0.14 0.30 1 1.70 33.269 462.44 38.72 63 1.25% 2.1 47% 1.26 0.00 1.26 0 0.96 0.06 0.98 1.0 0.054 43.88 82.60 0.116 2.14 0.95 0.36 0.80 1.23 1.0 0.034 1.50 58.23 0.098 6.69 4.41 2 1.7 33.335 3.1915 38.716
8.038 5600.33 18.1 0.197 18.0 10.3 4.48 1.09%Sand-Slime Tailing 0.059 119.0 0.45 0.14 0.31 1 1.70 30.651 426.05 35.73 57 1.12% 2.1 47% 1.27 0.00 1.27 0 0.96 0.06 0.98 1.0 0.054 42.83 78.56 0.111 2.04 0.95 0.35 0.80 1.23 1.0 0.034 1.51 54.07 0.095 6.34 4.19 2 1.7 30.761 2.945 35.727
8.202 5600.17 23.6 0.205 23.5 21.5 9.32 0.87%Sand-Slime Tailing 0.059 119.0 0.46 0.15 0.31 1 1.70 39.865 554.12 46.57 74 0.89% 2.0 47% 1.28 0.00 1.28 0 0.96 0.07 0.97 1.0 0.054 46.63 93.20 0.132 2.43 0.94 0.39 0.80 1.22 1.0 0.034 1.28 59.48 0.100 6.57 4.50 2 1.7 40.093 3.8385 46.566
8.366 5600.00 25.6 0.288 25.5 14.2 6.17 1.13%Sand-Slime Tailing 0.059 119.0 0.47 0.15 0.32 1 1.70 43.316 602.09 50.48 79 1.15% 2.0 47% 1.29 0.00 1.29 0 0.96 0.07 0.97 1.0 0.054 48.01 98.49 0.140 2.59 0.94 0.41 0.79 1.23 1.0 0.034 1.34 67.52 0.109 7.07 4.83 2 1.7 43.467 4.1615 50.484
8.530 5599.84 29.3 0.323 29.2 8.4 3.65 1.10%Sand-Slime Tailing 0.059 119.0 0.48 0.16 0.32 1 1.70 49.708 690.94 57.84 89 1.12% 2.0 47% 1.30 0.00 1.30 0 0.96 0.08 0.97 1.0 0.054 50.59 108.42 0.157 2.92 0.94 0.44 0.78 1.24 1.0 0.034 1.27 73.69 0.117 7.52 5.22 2 1.7 49.797 4.7676 57.837
8.694 5599.68 30.7 0.209 30.7 6.5 2.83 0.68%Sand-Slime Tailing 0.059 119.0 0.49 0.16 0.33 1 1.70 52.173 725.20 60.68 92 0.69% 1.8 47% 1.31 0.00 1.31 0 0.96 0.08 0.97 1.0 0.054 51.58 112.26 0.164 3.06 0.94 0.45 0.78 1.24 1.0 0.033 1.14 68.98 0.111 6.99 5.03 2 1.7 52.242 5.0017 60.676
8.858 5599.51 33.0 0.238 32.9 7.2 3.11 0.72%Sand-Slime Tailing 0.059 119.0 0.50 0.17 0.33 1 1.70 55.964 777.90 65.09 98 0.73% 1.8 47% 1.32 0.00 1.32 0 0.96 0.08 0.97 1.0 0.053 53.13 118.22 0.176 3.29 0.94 0.47 0.77 1.25 1.0 0.033 1.13 73.73 0.117 7.32 5.30 2 1.7 56.04 5.3653 65.087
9.022 5599.35 32.8 0.289 32.7 11.2 4.85 0.88%Sand-Slime Tailing 0.059 119.0 0.51 0.17 0.34 1 1.70 55.573 772.46 64.68 96 0.90% 1.9 47% 1.33 0.00 1.33 0 0.96 0.08 0.96 1.0 0.053 52.99 117.67 0.175 3.27 0.94 0.46 0.77 1.24 1.0 0.033 1.18 76.56 0.122 7.50 5.38 2 1.7 55.692 5.3319 64.683
9.186 5599.18 31.3 0.342 31.3 6.6 2.86 1.09%Sand-Slime Tailing 0.059 119.0 0.52 0.18 0.34 1 1.70 53.193 739.38 61.86 90 1.11% 2.0 47% 1.34 0.00 1.34 0 0.96 0.08 0.97 1.0 0.053 52.00 113.86 0.167 3.13 0.94 0.45 0.77 1.23 1.0 0.034 1.27 78.34 0.125 7.58 5.36 2 1.7 53.263 5.0994 61.862
9.350 5599.02 29.8 0.381 29.8 8.8 3.81 1.28%Sand-Slime Tailing 0.059 119.0 0.53 0.18 0.35 1 1.70 50.575 702.99 58.85 85 1.30% 2.0 47% 1.35 0.00 1.35 0 0.96 0.08 0.97 1.0 0.053 50.94 109.79 0.159 2.99 0.94 0.44 0.78 1.22 1.0 0.034 1.35 79.72 0.127 7.63 5.31 2 1.7 50.668 4.851 58.848
9.514 5598.86 25.7 0.381 25.6 10.2 4.40 1.48%Sand-Slime Tailing 0.059 119.0 0.54 0.19 0.35 1 1.70 43.537 605.16 50.69 72 1.52% 2.1 47% 1.36 0.00 1.36 0 0.95 0.07 0.97 1.0 0.053 48.08 98.77 0.141 2.63 0.94 0.41 0.79 1.20 1.0 0.035 1.53 77.35 0.123 7.29 4.96 2 1.7 43.645 4.1786 50.691
9.678 5598.69 21.5 0.318 21.5 11.1 4.80 1.48%Sand-Slime Tailing 0.059 119.0 0.55 0.19 0.35 1 1.70 36.482 507.10 42.51 59 1.52% 2.2 47% 1.37 0.00 1.37 0 0.95 0.07 0.97 1.0 0.053 45.21 87.72 0.124 2.31 0.94 0.38 0.80 1.19 1.0 0.035 1.67 70.98 0.113 6.62 4.47 2 1.7 36.599 3.504 42.508
9.842 5598.53 16.4 0.157 16.3 10.5 4.54 0.96%Sand-Slime Tailing 0.059 119.0 0.56 0.20 0.36 1 1.70 27.693 384.93 32.29 44 0.99% 2.2 47% 1.38 0.00 1.38 0 0.95 0.06 0.97 1.0 0.053 41.63 73.92 0.105 1.96 0.94 0.33 0.80 1.19 1.0 0.035 1.66 53.47 0.094 5.44 3.70 2 1.7 27.804 2.662 32.293
10.006 5598.36 14.2 0.105 14.1 11.9 5.14 0.74%Sand-Slime Tailing 0.059 119.0 0.57 0.20 0.36 1 1.70 24.004 333.66 28.03 37 0.77% 2.2 47% 1.39 0.00 1.39 0 0.95 0.06 0.97 1.0 0.053 40.13 68.16 0.097 1.82 0.94 0.31 0.80 1.19 1.0 0.035 1.66 46.45 0.089 5.06 3.44 2 1.7 24.13 2.3102 28.026
10.170 5598.20 15.4 0.103 15.4 7.0 3.05 0.67%Sand-Slime Tailing 0.059 119.0 0.58 0.21 0.37 1 1.70 26.180 363.90 30.49 40 0.69% 2.1 47% 1.40 0.00 1.40 0 0.95 0.06 0.97 1.0 0.053 41.00 71.49 0.101 1.90 0.94 0.32 0.80 1.18 1.0 0.035 1.54 47.04 0.089 5.02 3.46 2 1.7 26.255 2.5136 30.493
10.335 5598.04 16.1 0.128 16.1 4.8 2.09 0.79%Sand-Slime Tailing 0.059 119.0 0.59 0.21 0.37 1 1.70 27.370 380.44 31.85 42 0.82% 2.2 47% 1.41 0.00 1.41 0 0.95 0.06 0.97 1.0 0.053 41.47 73.32 0.104 1.95 0.94 0.33 0.80 1.18 1.0 0.035 1.60 50.94 0.092 5.14 3.54 2 1.7 27.421 2.6253 31.848
10.499 5597.87 14.5 0.162 14.4 6.6 2.86 1.12%Sand-Slime Tailing 0.059 119.0 0.60 0.22 0.38 1 1.70 24.548 341.22 28.59 37 1.17% 2.3 47% 1.42 0.00 1.42 0 0.95 0.06 0.97 1.0 0.053 40.33 68.92 0.098 1.85 0.94 0.31 0.80 1.18 1.0 0.035 1.95 55.63 0.096 5.28 3.56 2 1.7 24.618 2.3569 28.592
10.663 5597.71 14.4 0.178 14.4 8.8 3.80 1.23%Sand-Slime Tailing 0.059 119.0 0.61 0.22 0.38 1 1.70 24.446 339.80 28.50 36 1.29% 2.3 47% 1.43 0.00 1.43 0 0.95 0.06 0.97 1.0 0.053 40.30 68.80 0.098 1.85 0.94 0.31 0.80 1.18 1.0 0.035 2.05 58.29 0.098 5.35 3.60 2 1.7 24.539 2.3494 28.501
10.827 5597.54 16.9 0.242 16.8 10.1 4.39 1.44%Sand-Slime Tailing 0.059 119.0 0.62 0.23 0.39 1 1.70 28.560 396.98 33.30 42 1.49% 2.3 47% 1.44 0.00 1.44 0 0.95 0.06 0.97 1.0 0.053 41.98 75.27 0.106 2.01 0.94 0.33 0.80 1.17 1.0 0.035 1.99 66.37 0.107 5.76 3.88 2 1.7 28.668 2.7446 33.296
10.991 5597.38 15.0 0.248 14.9 10.7 4.62 1.66%Sand-Slime Tailing 0.059 119.0 0.63 0.23 0.39 1 1.70 25.313 351.85 29.53 37 1.73% 2.4 47% 1.45 0.00 1.45 0 0.94 0.06 0.97 1.0 0.053 40.66 70.19 0.100 1.89 0.94 0.31 0.80 1.17 1.0 0.035 2.31 68.36 0.110 5.83 3.86 2 1.7 25.426 2.4343 29.531
11.155 5597.22 12.9 0.198 12.8 12.5 5.43 1.54%Sand-Slime Tailing 0.059 119.0 0.64 0.24 0.40 1 1.70 21.726 301.99 25.39 31 1.62% 2.4 47% 1.46 0.00 1.46 0 0.94 0.06 0.97 1.0 0.053 39.21 64.59 0.093 1.76 0.94 0.29 0.80 1.17 1.0 0.035 2.50 63.39 0.104 5.44 3.60 2 1.7 21.859 2.0928 25.388
11.319 5597.05 11.6 0.168 11.5 17.1 7.40 1.45%Sand-Slime Tailing 0.059 119.0 0.65 0.24 0.40 1 1.70 19.567 271.98 22.94 27 1.53% 2.5 47% 1.47 0.00 1.47 0 0.94 0.05 0.97 1.0 0.053 38.35 61.28 0.089 1.69 0.94 0.28 0.80 1.16 1.0 0.035 2.63 60.28 0.100 5.21 3.45 2 1.7 19.748 1.8907 22.936
11.483 5596.89 11.7 0.133 11.5 23.8 10.31 1.14%Sand-Slime Tailing 0.059 119.0 0.66 0.25 0.41 1 1.70 19.567 271.98 23.02 27 1.21% 2.4 47% 1.48 0.00 1.48 0 0.94 0.05 0.97 1.0 0.053 38.37 61.39 0.089 1.69 0.94 0.28 0.80 1.16 1.0 0.036 2.39 54.92 0.095 4.90 3.30 2 1.7 19.819 1.8975 23.019
11.647 5596.72 12.6 0.172 12.4 30.6 13.24 1.37%Sand-Slime Tailing 0.059 119.0 0.67 0.26 0.41 1 1.70 21.080 293.01 24.86 29 1.44% 2.4 47% 1.49 0.00 1.49 0 0.94 0.06 0.97 1.0 0.053 39.02 63.88 0.092 1.75 0.94 0.29 0.80 1.16 1.0 0.036 2.46 61.18 0.101 5.14 3.45 2 1.7 21.404 2.0492 24.860
11.811 5596.56 15.5 0.198 15.4 20.6 8.94 1.28%Sand-Slime Tailing 0.059 119.0 0.68 0.26 0.42 1 1.70 26.110 362.93 30.58 36 1.33% 2.3 47% 1.50 0.00 1.50 0 0.94 0.06 0.97 1.0 0.052 41.03 71.60 0.102 1.94 0.94 0.32 0.80 1.16 1.0 0.036 2.09 63.85 0.104 5.23 3.59 2 1.695444 26.328 2.5207 30.579
11.975 5596.40 18.6 0.272 18.5 20.1 8.70 1.46%Sand-Slime Tailing 0.059 119.0 0.69 0.27 0.42 1 1.65 30.471 423.55 35.63 43 1.52% 2.3 47% 1.51 0.00 1.51 0 0.94 0.06 0.97 1.0 0.052 42.80 78.43 0.111 2.11 0.94 0.34 0.80 1.15 1.0 0.036 1.99 71.01 0.113 5.63 3.87 2 1.651564 30.678 2.9371 35.631
Scaling Factor for stress ration, rm
Volumetric Strain Ratio for Site-Specific Design Ear
Equiv. Number of Uniform Strain Cycles, N
Youd et al. (2001)
CSR
M=7.5,
s'v=1atm
0.15
Earthquake Moment Magnitude, M: 5.5
Magnitude Scaling Factor, MSF:
Equil Pore
Pressure at time of
Conditions at t1 Liquefaction Triggering Analyses Idriss & Boulanger (2008)Equil
Pore
Pressure
at t1CN qc1 qc1 qc1N
Normalized Cone
Penetration Resistance, Qt
Normalized Friction
Ratio, Fr (%)
Total
Stress at
t1 Liquefiable?
1=Yes
2=No
Cyclic Stress RatioEffective
Stress at
t1
Saturated
at t1
Idriss & Boulanger (2008)
Idriss and Boulanger (2008)
Max. Horiz. Acceleration, Amax/g:
Earthquake Moment Magnitude, M:
Magnitude Scaling Factor, MSF:
WHITE MESA TAILINGS REPOSITORY LIQUEFACTION AND SEISMIC SETTLEMENT ANALYSES - 3-8N Elev. at
Top of Layer (ft)
Elev. At
Midpoint of Layer (ft)
Bottom
of Layer (ft)
Thickness of Layer (ft)
CSR
M=7.5,
s'v=1atm
Kc
High Compaction Layer
Platform/Random Fill Layer
Pw (u2)Pw (u2)
2013 CPT Data from ConeTec CPT Data Interpretations
fs/qt
Material Type (as determined
by fines
Unit Weight Unit Weight
Total Stress
at time of CPT
Depth
at time of CPT Elevation qt fs qc
Effective Stress at
time of CPT
Saturated
at time of CPT
Type Index, Ic FC
Youd, et al (2001)
Max. Horiz. Acceleration, Amax/g:
Stress at
Bottom of Layer (tsf)
Stress at
Midpoint of Layer (tsf)FINAL COVER
Erosion Protection Layer
Water Storage/Rooting Zone Layer
qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Equil Pore
Pressure at Midpoint of Layer (tsf)
Unit Weight (tcf)
Unit Weight (pcf)
Stress at
Bottom of Layer (tsf)
Stress at
Midpoint of Layer (tsf)
Pressure
at Bottom of Layer (tsf)
Cyclic Resistance Ratio
FoS
Cyclic Stress Ratio
FoS
∆qc1n qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Liquef_SeismicSettle_30Aug2015.xls Page 33 of 36
Energy Fuels Resources (USA) Inc.
White Mesa MillLiquefaction Analyses
Data File: 13-52106_SP3-8N-BSC-CPT 5604.90 Water surface elevation during CPT investigation (f5608.37 Ground Surface Elevation at time of CPT (ft amsl)Location: White Mesa 2013 CPT Investigation 0.15 5600.09 Water surface elevation at t0 (ft amsl)5623.82 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl)
..\..\..\6.2.3 Field Data\2013 Field Investigation\Conetec Dat 5.5 5595.24 Water surface elevation at t1 (ft amsl) 0.50 Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after pla ###### 5623.57 5623.32 0.50 0.055 110 0.028 0.014 0.00 0.00 0.028 0.014
Tailings Sands 1.69 5590.24 Water surface elevation at t2 (ft amsl)3.50 Thickness of Water Storage/Rooting Zone (ft) ######5621.57 5619.82 3.50 0.054 107 0.215 0.121 0.00 0.00 0.215 0.121
Tailings Sand-Slimes 3.50 Thickness of High Compaction Layer (ft)###### 5618.07 5616.32 3.50 0.060 120 0.424 0.320 0.00 0.00 0.424 0.320
Tailings Slimes 1.44 7.95 Thickness of Random/Platform Fill on on top of existing interim cover (ft) ###### 5612.35 5608.37 7.95 0.050 101 0.825 0.624 0.00 0.00 0.825 0.624
Interim Cover 0.47 1646.57 Additional Stress due to Final Cover Placement, ΔσFC (psf)
Cells Requiring User Input/Manipulation 2.21 2.21 7.51 5590.24 Elevation of bottom of tailings (liner) (ft amsl)
rd Cσ Kσ Ka rd Dr f Kσ Ka Avg CN qc1 qc1 qc1N
(ft) (ft amsl) TSF TSF TSF (ft) PSI (%) (tcf) (pcf) (tsf)(tsf)(tsf) 1=Yes TSF MPa % (tsf)(tsf)(tsf) 1=Yes FoS TSF MPa
0=No 0=No
Scaling Factor for stress ration, rm
Volumetric Strain Ratio for Site-Specific Design Ear
Equiv. Number of Uniform Strain Cycles, N
Youd et al. (2001)
CSR
M=7.5,
s'v=1atm
0.15
Earthquake Moment Magnitude, M: 5.5
Magnitude Scaling Factor, MSF:
Equil Pore
Pressure at time of
Conditions at t1 Liquefaction Triggering Analyses Idriss & Boulanger (2008)Equil
Pore
Pressure
at t1CN qc1 qc1 qc1N
Normalized Cone
Penetration Resistance, Qt
Normalized Friction
Ratio, Fr (%)
Total
Stress at
t1 Liquefiable?
1=Yes
2=No
Cyclic Stress RatioEffective
Stress at
t1
Saturated
at t1
Idriss & Boulanger (2008)
Idriss and Boulanger (2008)
Max. Horiz. Acceleration, Amax/g:
Earthquake Moment Magnitude, M:
Magnitude Scaling Factor, MSF:
WHITE MESA TAILINGS REPOSITORY LIQUEFACTION AND SEISMIC SETTLEMENT ANALYSES - 3-8N Elev. at
Top of Layer (ft)
Elev. At
Midpoint of Layer (ft)
Bottom
of Layer (ft)
Thickness of Layer (ft)
CSR
M=7.5,
s'v=1atm
Kc
High Compaction Layer
Platform/Random Fill Layer
Pw (u2)Pw (u2)
2013 CPT Data from ConeTec CPT Data Interpretations
fs/qt
Material Type (as determined
by fines
Unit Weight Unit Weight
Total Stress
at time of CPT
Depth
at time of CPT Elevation qt fs qc
Effective Stress at
time of CPT
Saturated
at time of CPT
Type Index, Ic FC
Youd, et al (2001)
Max. Horiz. Acceleration, Amax/g:
Stress at
Bottom of Layer (tsf)
Stress at
Midpoint of Layer (tsf)FINAL COVER
Erosion Protection Layer
Water Storage/Rooting Zone Layer
qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Equil Pore
Pressure at Midpoint of Layer (tsf)
Unit Weight (tcf)
Unit Weight (pcf)
Stress at
Bottom of Layer (tsf)
Stress at
Midpoint of Layer (tsf)
Pressure
at Bottom of Layer (tsf)
Cyclic Resistance Ratio
FoS
Cyclic Stress Ratio
FoS
∆qc1n qc1n-cs
(CRR)
M=7.5,
s'v=1atm
12.139 5596.23 20.8 0.332 20.7 20.6 8.93 1.59%Sand-Slime Tailing 0.059 119.0 0.69 0.27 0.42 1 1.62 33.523 465.97 39.18 47 1.65% 2.3 47% 1.52 0.00 1.52 0 0.94 0.06 0.96 1.0 0.052 44.04 83.22 0.117 2.25 0.94 0.36 0.80 1.15 1.0 0.036 1.95 76.21 0.121 5.96 4.10 2 1.620237 33.731 3.2294 39.177
12.303 5596.07 20.6 0.354 20.4 21.5 9.33 1.72%Sand-Slime Tailing 0.059 119.0 0.70 0.28 0.43 1 1.61 32.926 457.68 38.49 46 1.78% 2.3 47% 1.53 0.00 1.53 0 0.94 0.06 0.96 1.0 0.052 43.80 82.30 0.116 2.22 0.94 0.36 0.80 1.15 1.0 0.036 2.04 78.62 0.125 6.09 4.16 2 1.611669 33.143 3.1731 38.494
12.467 5595.90 21.7 0.293 21.6 21.5 9.33 1.35%Sand-Slime Tailing 0.059 119.0 0.71 0.28 0.43 1 1.59 34.352 477.50 40.15 48 1.40% 2.2 47% 1.54 0.00 1.54 0 0.93 0.07 0.96 1.0 0.052 44.38 84.53 0.119 2.29 0.93 0.37 0.80 1.15 1.0 0.036 1.79 71.84 0.114 5.51 3.90 2 1.59186 34.566 3.3094 40.147
12.631 5595.74 19.6 0.242 19.4 23.8 10.31 1.24%Sand-Slime Tailing 0.059 119.0 0.72 0.29 0.44 1 1.60 31.035 431.38 36.32 43 1.28% 2.3 47% 1.55 0.00 1.55 0 0.93 0.06 0.96 1.0 0.052 43.04 79.36 0.112 2.15 0.93 0.35 0.80 1.14 1.0 0.036 1.85 67.11 0.108 5.15 3.65 2 1.598899 31.272 2.994 36.321
12.795 5595.57 25.2 0.298 25.1 16.3 7.06 1.18%Sand-Slime Tailing 0.059 119.0 0.73 0.29 0.44 1 1.55 38.791 539.19 45.24 55 1.22% 2.2 47% 1.56 0.00 1.56 0 0.93 0.07 0.96 1.0 0.052 46.17 91.40 0.129 2.50 0.93 0.39 0.80 1.14 1.0 0.036 1.59 71.85 0.114 5.40 3.95 2 1.547297 38.948 3.7289 45.236
12.959 5595.41 21.9 0.407 21.8 10.3 4.45 1.86%Sand-Slime Tailing 0.059 119.0 0.74 0.30 0.45 1 1.56 34.046 473.24 39.66 47 1.93% 2.3 47% 1.57 0.00 1.57 0 0.93 0.06 0.96 1.0 0.052 44.21 83.87 0.118 2.28 0.93 0.36 0.80 1.14 1.0 0.036 2.09 83.02 0.133 6.22 4.25 2 1.5603 34.146 3.2691 39.658
13.123 5595.25 15.7 0.413 15.6 13.9 6.04 2.63%Slime Tailings 0.057 113.1 0.75 0.30 0.45 1 1.60 25.057 348.29 29.26 33 2.76% 2.6 71% 1.58 0.00 1.58 0 0.93 0.06 0.96 1.0 0.052 40.28 69.54 0.099 1.91 0.93 0.31 0.80 1.14 1.0 0.036 3.10 90.60 0.149 6.91 4.41 2 1.602078 25.196 2.4123 29.264
13.287 5595.08 12.5 0.244 12.3 29.1 12.59 1.95%Sand-Slime Tailing 0.059 119.0 0.76 0.31 0.46 1 1.62 20.028 278.39 23.60 26 2.08% 2.6 47% 1.59 0.00 1.58 1 0.93 0.05 0.97 1.0 0.052 38.58 62.18 0.090 1.74 0.93 0.28 0.80 1.14 1.0 0.036 3.15 74.30 0.118 5.40 3.57 2 1.624325 20.323 1.9457 23.603
13.451 5594.92 23.9 0.277 23.7 39.2 16.99 1.16%Sand-Slime Tailing 0.059 119.0 0.77 0.31 0.46 1 1.52 35.953 499.74 42.19 50 1.20% 2.2 47% 1.60 0.01 1.59 1 0.93 0.07 0.96 1.0 0.052 45.10 87.29 0.123 2.38 0.93 0.38 0.80 1.13 1.0 0.037 1.65 69.75 0.112 5.03 3.71 2 1.518912 36.324 3.4777 42.189
13.615 5594.75 17.1 0.257 16.9 21.6 9.34 1.51%Sand-Slime Tailing 0.059 119.0 0.78 0.32 0.47 1 1.56 26.372 366.57 30.87 35 1.58% 2.4 47% 1.61 0.02 1.59 1 0.93 0.06 0.96 1.0 0.052 41.13 72.00 0.102 1.96 0.93 0.32 0.80 1.13 1.0 0.037 2.28 70.46 0.113 5.01 3.49 2 1.558637 26.582 2.5449 30.873
13.779 5594.59 13.5 0.216 13.4 24.5 10.62 1.60%Sand-Slime Tailing 0.059 119.0 0.79 0.32 0.47 1 1.58 21.097 293.25 24.78 27 1.70% 2.5 47% 1.62 0.02 1.60 1 0.92 0.06 0.97 1.0 0.052 38.99 63.78 0.092 1.76 0.93 0.29 0.80 1.13 1.0 0.037 2.78 68.81 0.110 4.85 3.31 2 1.580327 21.339 2.043 24.784
13.943 5594.43 12.3 0.109 12.1 31.7 13.73 0.89%Sand-Slime Tailing 0.059 119.0 0.80 0.33 0.47 1 1.58 19.096 265.43 22.54 24 0.95% 2.4 47% 1.63 0.03 1.60 1 0.92 0.05 0.97 1.0 0.052 38.21 60.75 0.089 1.69 0.93 0.27 0.80 1.13 1.0 0.037 2.34 52.74 0.094 4.07 2.88 2 1.58209 19.409 1.8582 22.542
14.107 5594.26 13.7 0.109 13.5 35.9 15.56 0.80%Sand-Slime Tailing 0.059 119.0 0.81 0.33 0.48 1 1.56 20.976 291.56 24.77 27 0.85% 2.3 47% 1.63 0.03 1.60 1 0.92 0.06 0.97 1.0 0.052 38.99 63.76 0.092 1.76 0.93 0.29 0.80 1.12 1.0 0.037 2.09 51.73 0.093 3.99 2.87 2 1.557223 21.325 2.0416 24.768
14.271 5594.10 14.3 0.105 14.1 40.0 17.33 0.73%Sand-Slime Tailing 0.059 119.0 0.82 0.34 0.48 1 1.54 21.657 301.03 25.60 28 0.78% 2.3 47% 1.64 0.04 1.61 1 0.92 0.06 0.96 1.0 0.052 39.28 64.88 0.093 1.78 0.93 0.29 0.80 1.12 1.0 0.037 1.98 50.75 0.092 3.91 2.84 2 1.541392 22.041 2.1102 25.600
14.436 5593.93 15.6 0.141 15.4 38.1 16.50 0.90%Sand-Slime Tailing 0.059 119.0 0.83 0.34 0.49 1 1.52 23.383 325.02 27.58 30 0.95% 2.3 47% 1.65 0.04 1.61 1 0.92 0.06 0.96 1.0 0.053 39.97 67.55 0.097 1.84 0.93 0.30 0.80 1.12 1.0 0.038 2.02 55.83 0.096 4.03 2.93 2 1.520342 23.744 2.2733 27.578
14.600 5593.77 13.6 0.133 13.4 36.6 15.87 0.98%Sand-Slime Tailing 0.059 119.0 0.84 0.35 0.49 1 1.53 20.462 284.42 24.17 26 1.04% 2.4 47% 1.66 0.05 1.62 1 0.92 0.06 0.97 1.0 0.053 38.78 62.95 0.091 1.73 0.93 0.28 0.80 1.12 1.0 0.038 2.31 55.88 0.096 3.98 2.86 2 1.527025 20.811 1.9925 24.171
14.764 5593.61 12.7 0.142 12.5 36.6 15.85 1.11%Sand-Slime Tailing 0.059 119.0 0.85 0.35 0.50 1 1.52 19.076 265.16 22.56 24 1.19% 2.5 47% 1.67 0.05 1.62 1 0.92 0.05 0.97 1.0 0.053 38.21 60.77 0.089 1.68 0.93 0.27 0.80 1.12 1.0 0.038 2.58 58.26 0.098 4.03 2.85 2 1.52486 19.424 1.8597 22.560
14.928 5593.44 11.6 0.159 11.4 38.9 16.85 1.37%Sand-Slime Tailing 0.059 119.0 0.86 0.36 0.50 1 1.52 17.298 240.44 20.52 21 1.48% 2.6 47% 1.68 0.06 1.63 1 0.92 0.05 0.97 1.0 0.053 37.50 58.02 0.086 1.62 0.93 0.26 0.80 1.11 1.0 0.038 3.05 62.52 0.103 4.16 2.89 2 1.522673 17.667 1.6915 20.519
15.092 5593.28 12.1 0.159 11.8 38.7 16.79 1.32%Sand-Slime Tailing 0.059 119.0 0.87 0.36 0.51 1 1.51 17.844 248.04 21.15 22 1.42% 2.5 47% 1.69 0.06 1.63 1 0.91 0.05 0.97 1.0 0.053 37.72 58.87 0.087 1.63 0.93 0.27 0.80 1.11 1.0 0.038 2.93 62.03 0.102 4.10 2.87 2 1.510945 18.21 1.7434 21.149
15.256 5593.11 18.8 0.159 18.6 31.2 13.52 0.85%Sand-Slime Tailing 0.059 119.0 0.88 0.37 0.51 1 1.45 26.955 374.67 31.63 35 0.89% 2.3 47% 1.70 0.07 1.64 1 0.91 0.06 0.96 1.0 0.053 41.40 73.03 0.103 1.96 0.92 0.32 0.80 1.11 1.0 0.038 1.81 57.25 0.097 3.86 2.91 2 1.45231 27.238 2.6077 31.635
Liquef_SeismicSettle_30Aug2015.xls Page 34 of 36
Energy Fuels Resources (USA) Inc.White Mesa Mill
Liquefaction Analyses
Data File: 13-52106_SP3-8S-BSC-CPT 5603.50 Water surface elevation during CPT investigation (ft am5608.70 Ground Surface Elevation at time of CPT (ft amsl)
Location: White Mesa 2013 CPT Investigation 0.15 5600.42 Water surface elevation at t0 (ft amsl)5620.45 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl)
..\..\..\6.2.3 Field Data\2013 Field Investigation\Conetec Data 5.5 5590.63 Water surface elevation at t1 (ft amsl)0.50 Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after plac 5620.45 5620.2 5619.95 0.50 0.055 110 0.028 0.014 0.00 0.00 0.028 0.014
Tailings Sands 1.69 5585.63 Water surface elevation at t2 (ft amsl)3.50 Thickness of Water Storage/Rooting Zone (ft) 5619.95 5618.2 5616.45 3.50 0.054 107 0.215 0.121 0.00 0.00 0.215 0.121
Tailings Sand-Slimes 3.50 Thickness of High Compaction Layer (ft)5616.45 5614.7 5612.95 3.50 0.060 120 0.424 0.320 0.00 0.00 0.424 0.320
Tailings Slimes 1.44 4.25 Thickness of Random/Platform Fill on on top of existing interim cover (ft) 5612.95 5610.825 5608.70 4.25 0.050 101 0.638 0.531 0.00 0.00 0.638 0.531
Interim Cover 0.47 1273.89 Additional Stress due to Final Cover Placement, ΔσFC (psf)
Cells Requiring User Input/Manipulation 2.21 2.21 7.51 5585.63 Elevation of bottom of tailings (liner) (ft amsl)
rd Cσ Kσ Ka rd Dr ffKσ Ka Avg CN qc1 qc1 qc1N
(ft) (ft amsl) TSF TSF TSF (ft) PSI (%) (tcf) (pcf) (tsf)(tsf)(tsf) 1=Yes TSF MPa % (tsf)(tsf)(tsf) 1=Yes FoS TSF MPa
0=No 0=No
0.164 5608.54 17.2 0.175 17.2 1.2 0.54 1.02%Interim Cover 0.050 100.7 0.01 0.00 0.01 0 1.70 29.240 406.44 33.98 2082 1.02% 1.2 51% 0.65 0.00 0.65 0 1.00 0.06 1.02 1.0 0.059 42.24 76.22 0.108 1.83 0.97 0.34 0.80 0.80 2.53 1.0 0.017 1.00 33.98 0.078 190.38 96.10 2 1.7 29.253 2.8007 33.976
0.328 5608.37 63.5 0.285 63.5 10.1 4.36 0.45%Interim Cover 0.050 100.7 0.02 0.00 0.02 0 1.70 107.899 1499.80 125.44 3844 0.45% 0.9 51% 0.65 0.00 0.65 0 1.00 0.13 1.04 1.0 0.060 74.34 199.78 1.000 16.70 0.97 0.65 0.68 0.68 3.59 1.0 0.012 1.00 125.44 0.264 320.55 168.62 2 1.7 108.01 10.34 125.442
0.492 5608.21 90.9 0.503 90.8 10.4 4.50 0.55%Interim Cover 0.050 100.7 0.02 0.00 0.02 0 1.70 154.394 2146.08 179.45 3666 0.55% 1.0 51% 0.66 0.00 0.66 0 1.00 0.21 1.06 1.0 0.061 93.29 272.74 1.000 16.39 0.97 0.77 0.61 0.61 3.94 1.0 0.011 1.00 179.45 1.000 811.09 413.74 2 1.7 154.5 14.792 179.447
0.656 5608.04 111.9 0.700 111.9 7.7 3.35 0.63%Interim Cover 0.050 100.7 0.03 0.00 0.03 0 1.70 190.145 2643.02 220.94 3385 0.63% 1.0 51% 0.67 0.00 0.67 0 1.00 0.30 1.08 1.0 0.062 ##### 328.79 1.000 16.09 0.97 0.86 0.60 0.60 3.68 1.0 0.012 1.00 220.94 1.000 608.56 312.32 2 1.7 190.23 18.212 220.937
0.820 5607.88 126.5 0.864 126.4 5.8 2.51 0.68%Interim Cover 0.050 100.7 0.04 0.00 0.04 0 1.70 214.948 2987.78 249.72 3061 0.68% 1.1 51% 0.68 0.00 0.68 0 1.00 0.30 1.07 1.0 0.062 ##### 367.68 1.000 16.14 0.97 0.91 0.60 0.60 3.37 1.0 0.013 1.00 249.72 1.000 487.04 251.59 2 1.7 215.01 20.585 249.720
0.984 5607.72 125.0 0.813 125.0 3.0 1.31 0.65%Interim Cover 0.050 100.7 0.05 0.00 0.05 0 1.70 212.466 2953.28 246.80 2521 0.65% 1.0 51% 0.69 0.00 0.69 0 1.00 0.30 1.07 1.0 0.062 ##### 363.74 1.000 16.20 0.97 0.91 0.60 0.60 3.13 1.0 0.014 1.00 246.80 1.000 406.03 211.11 2 1.7 212.5 20.345 246.804
1.148 5607.55 117.6 0.695 117.6 1.1 0.48 0.59%Interim Cover 0.050 100.7 0.06 0.00 0.06 0 1.70 199.903 2778.65 232.19 2032 0.59% 1.0 51% 0.69 0.00 0.69 0 1.00 0.30 1.06 1.0 0.062 ##### 343.99 1.000 16.25 0.97 0.88 0.60 0.60 2.95 1.0 0.015 1.00 232.19 1.000 348.16 182.21 2 1.7 199.91 19.14 232.189
1.312 5607.39 104.2 0.601 104.2 1.5 0.66 0.58%Interim Cover 0.050 100.7 0.07 0.00 0.07 0 1.70 177.140 2462.25 205.76 1576 0.58% 1.0 51% 0.70 0.00 0.70 0 1.00 0.28 1.06 1.0 0.061 ##### 308.28 1.000 16.36 0.97 0.83 0.60 0.60 2.79 1.0 0.015 1.00 205.76 1.000 304.76 160.56 2 1.7 177.16 16.961 205.756
1.476 5607.22 81.5 0.591 81.5 0.0 0.01 0.73%Interim Cover 0.050 100.7 0.07 0.00 0.07 0 1.70 138.465 1924.66 160.82 1094 0.73% 1.2 51% 0.71 0.00 0.71 0 1.00 0.18 1.03 1.0 0.060 86.76 247.58 1.000 16.74 0.97 0.73 0.63 0.63 2.45 1.0 0.017 1.00 160.82 1.000 271.00 143.87 2 1.7 138.47 13.257 160.819
1.640 5607.06 72.9 0.416 72.9 -0.0 -0.01 0.57%Interim Cover 0.050 100.7 0.08 0.00 0.08 0 1.70 123.947 1722.86 143.96 882 0.57% 1.1 51% 0.72 0.00 0.72 0 1.00 0.15 1.03 1.0 0.059 80.84 224.80 1.000 16.84 0.97 0.69 0.65 0.65 2.25 1.0 0.019 1.00 143.96 0.357 87.22 52.03 2 1.7 123.95 11.867 143.957
1.804 5606.90 64.8 0.713 64.8 0.1 0.05 1.10%Interim Cover 0.050 100.7 0.09 0.00 0.09 0 1.70 110.075 1530.04 127.85 712 1.10% 1.4 51% 0.73 0.00 0.73 0 1.00 0.13 1.02 1.0 0.059 75.19 203.03 1.000 16.92 0.97 0.65 0.67 0.67 2.08 1.0 0.020 1.00 127.85 0.274 60.88 38.90 2 1.7 110.08 10.539 127.847
1.968 5606.73 61.1 0.519 61.1 0.6 0.27 0.85%Interim Cover 0.050 100.7 0.10 0.00 0.10 0 1.70 103.887 1444.03 120.67 615 0.85% 1.3 51% 0.74 0.00 0.74 0 1.00 0.13 1.02 1.0 0.059 72.67 193.33 0.854 14.50 0.97 0.63 0.68 0.68 1.98 1.0 0.022 1.00 120.67 0.243 49.53 32.02 2 1.7 103.89 9.9468 120.666
2.133 5606.57 57.5 0.435 57.5 2.3 0.98 0.76%Interim Cover 0.050 100.7 0.11 0.00 0.11 0 1.70 97.801 1359.43 113.62 535 0.76% 1.3 51% 0.74 0.00 0.74 0 1.00 0.12 1.02 1.0 0.059 70.19 183.81 0.604 10.29 0.97 0.62 0.69 0.69 1.90 1.0 0.022 1.00 113.62 0.216 40.67 25.48 2 1.7 97.825 9.3658 113.618
2.297 5606.40 54.3 0.512 54.3 5.3 2.29 0.94%Interim Cover 0.050 100.7 0.12 0.00 0.12 0 1.70 92.276 1282.64 107.24 469 0.94% 1.4 51% 0.75 0.00 0.75 0 1.00 0.11 1.02 1.0 0.059 67.95 175.19 0.466 7.97 0.97 0.60 0.70 0.70 1.82 1.0 0.023 1.00 107.24 0.195 33.99 20.98 2 1.7 92.332 8.8399 107.238
2.461 5606.24 53.3 1.269 53.3 2.3 0.99 2.38%Interim Cover 0.050 100.7 0.12 0.00 0.12 0 1.70 90.542 1258.53 105.19 429 2.39% 1.8 51% 0.76 0.00 0.76 0 1.00 0.11 1.01 1.0 0.058 67.23 172.42 0.433 7.42 0.97 0.59 0.70 0.70 1.78 1.0 0.024 1.11 116.73 0.228 37.15 22.28 2 1.7 90.566 8.6708 105.187
2.625 5606.08 76.9 1.662 76.9 5.5 2.37 2.16%Interim Cover 0.050 100.7 0.13 0.00 0.13 0 1.70 130.747 1817.38 151.92 581 2.16% 1.7 51% 0.77 0.00 0.77 0 1.00 0.16 1.02 1.0 0.059 83.63 235.56 1.000 17.06 0.97 0.71 0.64 0.64 1.95 1.0 0.022 1.04 158.48 0.450 68.81 42.94 2 1.7 130.81 12.523 151.922
2.789 5605.91 222.0 2.940 221.9 14.3 6.21 1.32%Interim Cover 0.050 100.7 0.14 0.00 0.14 0 1.61 358.013 4976.38 415.98 1580 1.33% 1.4 51% 0.78 0.00 0.78 0 0.99 0.30 1.03 1.0 0.059 ##### 592.28 1.000 16.87 0.97 1.18 0.60 0.60 2.07 1.0 0.021 1.00 415.98 1.000 143.93 80.40 2 1.6134701 358.16 34.29 415.978
2.953 5605.75 222.9 2.175 222.9 15.8 6.86 0.98%Interim Cover 0.050 100.7 0.15 0.00 0.15 0 1.59 354.180 4923.11 411.54 1498 0.98% 1.2 51% 0.79 0.00 0.79 0 0.99 0.30 1.03 1.0 0.059 ##### 586.29 1.000 16.94 0.97 1.17 0.60 0.60 2.02 1.0 0.021 1.00 411.54 1.000 135.98 76.46 2 1.5893219 354.34 33.924 411.542
3.117 5605.58 213.5 2.265 213.3 28.9 12.50 1.06%Interim Cover 0.050 100.7 0.16 0.00 0.16 0 1.57 334.170 4644.96 388.45 1359 1.06% 1.3 51% 0.79 0.00 0.79 0 0.99 0.30 1.02 1.0 0.059 ##### 555.08 1.000 17.00 0.97 1.14 0.60 0.60 1.98 1.0 0.022 1.00 388.45 1.000 128.88 72.94 2 1.5668124 334.45 32.02 388.446
3.281 5605.42 207.8 1.697 207.7 13.6 5.90 0.82%Sand Tailings 0.051 102.8 0.17 0.00 0.17 0 1.55 320.918 4460.77 372.88 1255 0.82% 1.2 18% 0.80 0.00 0.80 0 0.99 0.30 1.02 1.0 0.059 ##### 490.30 1.000 17.07 0.96 1.11 0.60 0.60 1.93 1.0 0.022 1.00 372.88 1.000 122.36 69.71 2 1.5453286 321.05 30.737 372.880
3.445 5605.26 155.2 1.444 155.1 11.4 4.92 0.93%Sand Tailings 0.051 102.8 0.17 0.00 0.17 0 1.53 236.617 3288.98 274.94 892 0.93% 1.3 18% 0.81 0.00 0.81 0 0.99 0.30 1.02 1.0 0.058 92.38 367.32 1.000 17.14 0.96 0.96 0.60 0.60 1.90 1.0 0.022 1.00 274.94 1.000 116.47 66.80 2 1.5251865 236.73 22.664 274.942
3.609 5605.09 125.3 1.613 125.3 6.9 2.98 1.29%Sand Tailings 0.051 102.8 0.18 0.00 0.18 0 1.57 197.324 2742.80 229.26 687 1.29% 1.5 18% 0.82 0.00 0.82 0 0.99 0.30 1.01 1.0 0.058 80.70 309.96 1.000 17.21 0.96 0.87 0.60 0.60 1.86 1.0 0.023 1.00 229.26 1.000 111.12 64.17 2 1.5748132 197.39 18.898 229.259
3.773 5604.93 100.1 0.839 100.1 7.6 3.29 0.84%Sand Tailings 0.051 102.8 0.19 0.00 0.19 0 1.66 166.576 2315.41 193.56 524 0.84% 1.4 18% 0.83 0.00 0.83 0 0.99 0.24 1.01 1.0 0.058 71.57 265.13 1.000 17.31 0.96 0.80 0.60 0.60 1.83 1.0 0.023 1.00 193.56 1.000 106.25 61.78 2 1.6649266 166.65 15.956 193.559
3.937 5604.76 82.6 1.213 82.5 16.4 7.12 1.47%Sand Tailings 0.051 102.8 0.20 0.00 0.20 0 1.70 140.267 1949.71 163.11 414 1.47% 1.6 18% 0.84 0.00 0.84 0 0.99 0.18 1.01 1.0 0.057 63.79 226.90 1.000 17.41 0.96 0.74 0.63 0.63 1.72 1.0 0.025 1.00 163.11 1.000 101.79 59.60 2 1.7 140.44 13.446 163.114
4.101 5604.60 116.5 1.585 116.5 3.6 1.57 1.36%Sand Tailings 0.051 102.8 0.21 0.00 0.21 0 1.56 182.193 2532.48 211.65 560 1.36% 1.5 18% 0.84 0.00 0.84 0 0.99 0.30 1.01 1.0 0.057 76.20 287.84 1.000 17.41 0.96 0.84 0.60 0.60 1.77 1.0 0.024 1.00 211.65 1.000 97.69 57.55 2 1.5638874 182.23 17.447 211.647
4.265 5604.43 95.5 1.860 95.4 10.8 4.68 1.95%Sand Tailings 0.051 102.8 0.22 0.00 0.22 0 1.63 155.946 2167.64 181.25 441 1.95% 1.7 18% 0.85 0.00 0.85 0 0.99 0.21 1.00 1.0 0.057 68.43 249.68 1.000 17.50 0.96 0.78 0.61 0.61 1.71 1.0 0.025 1.05 190.74 1.000 93.92 55.71 2 1.6346491 156.06 14.941 181.249
4.429 5604.27 82.7 1.658 82.6 23.5 10.20 2.00%Sand-Slime Tailing 0.047 93.3 0.22 0.00 0.22 0 1.68 138.765 1928.83 161.45 369 2.01% 1.8 47% 0.86 0.00 0.86 0 0.99 0.18 1.00 1.0 0.057 86.93 248.38 1.000 17.55 0.96 0.73 0.63 0.63 1.64 1.0 0.026 1.09 175.31 1.000 90.74 54.14 2 1.6801632 139.01 13.309 161.453
4.593 5604.11 86.3 1.621 85.5 118.1 51.17 1.88%Sand-Slime Tailing 0.047 93.3 0.23 0.00 0.23 0 1.65 140.841 1957.68 164.99 372 1.88% 1.7 47% 0.87 0.00 0.87 0 0.98 0.18 1.00 1.0 0.057 88.16 253.15 1.000 17.59 0.96 0.74 0.63 0.63 1.63 1.0 0.026 1.07 176.22 1.000 87.77 52.68 2 1.6466803 142.05 13.6 164.988
4.757 5603.94 76.9 1.353 76.5 64.1 27.77 1.76%Sand Tailings 0.051 102.8 0.24 0.00 0.24 0 1.68 128.249 1782.67 149.73 320 1.76% 1.8 18% 0.88 0.00 0.88 0 0.98 0.16 1.00 1.0 0.057 60.37 210.10 1.000 17.63 0.96 0.71 0.65 0.65 1.57 1.0 0.027 1.08 161.01 1.000 84.72 51.18 2 1.6755875 128.92 12.343 149.733
4.921 5603.78 61.2 1.819 60.2 164.5 71.28 2.97%Sand-Slime Tailing 0.047 93.3 0.25 0.00 0.25 0 1.70 102.374 1423.00 120.93 247 2.98% 2.0 47% 0.88 0.00 0.88 0 0.98 0.13 1.00 1.0 0.057 72.71 193.64 0.865 15.27 0.96 0.63 0.68 0.68 1.49 1.0 0.029 1.31 158.55 0.451 37.01 26.14 2 1.7 104.12 9.9684 120.929
5.085 5603.61 58.0 1.686 56.9 179.6 77.81 2.91%Sand-Slime Tailing 0.047 93.3 0.26 0.00 0.26 0 1.70 96.747 1344.78 114.58 227 2.92% 2.0 47% 0.89 0.00 0.89 0 0.98 0.12 1.00 1.0 0.057 70.49 185.07 0.630 11.14 0.96 0.62 0.69 0.69 1.46 1.0 0.029 1.33 152.13 0.407 32.47 21.81 2 1.7 98.653 9.445 114.579
5.249 5603.45 60.7 1.440 60.7 -1.3 -0.55 2.37%Sand-Slime Tailing 0.059 119.0 0.26 0.00 0.26 1 1.70 103.139 1433.63 119.77 229 2.38% 1.9 47% 0.90 0.00 0.90 0 0.98 0.12 0.99 1.0 0.056 72.31 192.08 0.813 14.42 0.96 0.63 0.68 0.68 1.45 1.0 0.029 1.23 147.82 0.380 29.38 21.90 2 1.7 103.13 9.8732 119.774
5.413 5603.29 46.9 1.368 46.8 16.1 6.96 2.92%Sand-Slime Tailing 0.059 119.0 0.27 0.01 0.27 1 1.70 79.509 1105.18 92.54 174 2.94% 2.1 47% 0.91 0.00 0.91 0 0.98 0.10 0.99 1.0 0.056 62.76 155.30 0.298 5.29 0.96 0.56 0.72 0.72 1.38 1.0 0.031 1.43 132.68 0.297 22.57 13.93 2 1.7 79.679 7.6285 92.543
5.577 5603.12 43.9 1.137 43.5 70.6 30.59 2.59%Sand-Slime Tailing 0.059 119.0 0.28 0.01 0.27 1 1.70 73.882 1026.96 86.68 160 2.61% 2.1 47% 0.92 0.00 0.92 0 0.98 0.10 0.99 1.0 0.056 60.70 147.38 0.260 4.62 0.96 0.54 0.73 0.73 1.36 1.0 0.031 1.40 121.40 0.246 18.40 11.51 2 1.7 74.631 7.1452 86.680
5.741 5602.96 101.5 1.244 99.3 344.3 ##### 1.23%Sand Tailings 0.062 123.5 0.29 0.02 0.28 1 1.50 149.486 2077.86 177.38 365 1.23% 1.6 18% 0.93 0.00 0.93 0 0.98 0.21 0.98 1.0 0.056 67.44 244.81 1.000 17.98 0.96 0.77 0.62 0.62 1.55 1.0 0.027 1.00 177.38 1.000 73.35 45.66 2 1.5047946 152.72 14.622 177.376
5.905 5602.79 130.7 1.385 130.5 35.7 15.48 1.06%Sand Tailings 0.062 123.5 0.30 0.02 0.28 1 1.41 184.468 2564.11 214.62 462 1.06% 1.5 18% 0.94 0.00 0.94 0 0.98 0.30 0.97 1.0 0.055 76.96 291.57 1.000 18.19 0.96 0.85 0.60 0.60 1.56 1.0 0.027 1.00 214.62 1.000 72.08 45.14 2 1.4134425 184.78 17.691 214.615
6.069 5602.63 99.5 1.248 99.5 9.3 4.02 1.25%Sand Tailings 0.062 123.5 0.31 0.03 0.29 1 1.50 148.832 2068.77 172.96 345 1.26% 1.6 18% 0.95 0.00 0.95 0 0.98 0.20 0.98 1.0 0.055 66.31 239.27 1.000 18.08 0.96 0.76 0.62 0.62 1.52 1.0 0.028 1.00 172.96 1.000 70.85 44.47 2 1.4962526 148.92 14.257 172.960
6.234 5602.47 80.3 0.821 80.3 4.9 2.11 1.02%Sand Tailings 0.062 123.5 0.32 0.03 0.29 1 1.56 125.079 1738.59 145.33 273 1.03% 1.6 18% 0.96 0.00 0.96 0 0.98 0.15 0.98 1.0 0.055 59.24 204.57 1.000 18.04 0.96 0.70 0.65 0.65 1.46 1.0 0.029 1.00 145.33 0.365 25.46 21.75 2 1.5584195 125.13 11.98 145.326
6.398 5602.30 62.4 0.678 62.4 1.2 0.50 1.09%Sand Tailings 0.062 123.5 0.33 0.04 0.30 1 1.63 101.688 1413.46 118.12 208 1.09% 1.7 18% 0.97 0.00 0.97 0 0.97 0.12 0.99 1.0 0.055 52.29 170.40 0.412 7.42 0.96 0.63 0.69 0.69 1.40 1.0 0.030 1.04 123.04 0.253 17.35 12.38 2 1.630915 101.7 9.7367 118.118
6.562 5602.14 65.4 0.430 65.4 1.8 0.78 0.66%Sand Tailings 0.062 123.5 0.35 0.04 0.30 1 1.61 105.030 1459.92 122.01 215 0.66% 1.5 18% 0.98 0.00 0.98 0 0.97 0.13 0.98 1.0 0.055 53.28 175.29 0.468 8.45 0.96 0.64 0.68 0.68 1.40 1.0 0.030 1.00 122.01 0.249 16.78 12.62 2 1.6057202 105.05 10.057 122.007
6.726 5601.97 100.8 0.407 100.8 5.9 2.54 0.40%Sand Tailings 0.062 123.5 0.36 0.05 0.31 1 1.46 147.482 2050.01 171.35 327 0.41% 1.3 18% 0.99 0.00 0.99 0 0.97 0.19 0.97 1.0 0.055 65.90 237.25 1.000 18.30 0.96 0.76 0.62 0.62 1.48 1.0 0.029 1.00 171.35 1.000 66.34 42.32 2 1.4632651 147.54 14.125 171.354
6.890 5601.81 94.6 0.393 94.5 3.2 1.37 0.42%Sand Tailings 0.062 123.5 0.37 0.05 0.31 1 1.48 139.500 1939.05 162.05 301 0.42% 1.3 18% 1.00 0.00 1.00 0 0.97 0.18 0.97 1.0 0.055 63.52 225.57 1.000 18.31 0.96 0.73 0.63 0.63 1.45 1.0 0.029 1.00 162.05 1.000 65.31 41.81 2 1.4755629 139.53 13.358 162.054
7.054 5601.65 89.5 0.390 89.5 2.8 1.22 0.44%Sand Tailings 0.062 123.5 0.38 0.06 0.32 1 1.48 132.877 1846.99 154.36 281 0.44% 1.3 18% 1.01 0.00 1.01 0 0.97 0.17 0.97 1.0 0.055 61.55 215.91 1.000 18.32 0.96 0.72 0.64 0.64 1.43 1.0 0.029 1.00 154.36 0.422 27.14 22.73 2 1.4844968 132.9 12.724 154.359
7.218 5601.48 87.6 0.521 87.5 3.6 1.56 0.60%Sand Tailings 0.062 123.5 0.39 0.06 0.32 1 1.48 129.857 1805.02 150.86 270 0.60% 1.4 18% 1.02 0.00 1.02 0 0.97 0.16 0.97 1.0 0.054 60.66 211.52 1.000 18.36 0.96 0.71 0.65 0.65 1.42 1.0 0.030 1.00 150.86 0.399 25.29 21.82 2 1.4835763 129.89 12.436 150.860
7.382 5601.32 81.6 0.625 81.5 3.4 1.48 0.77%Sand Tailings 0.062 123.5 0.40 0.07 0.33 1 1.50 122.012 1695.96 141.75 248 0.77% 1.5 18% 1.03 0.00 1.03 0 0.97 0.15 0.97 1.0 0.054 58.33 200.07 1.000 18.37 0.96 0.69 0.66 0.66 1.39 1.0 0.030 1.00 141.75 0.345 21.51 19.94 2 1.4963405 122.04 11.684 141.746
7.546 5601.15 73.8 0.669 73.8 2.8 1.20 0.91%Sand Tailings 0.062 123.5 0.41 0.07 0.33 1 1.52 111.871 1555.01 129.96 221 0.91% 1.6 18% 1.04 0.00 1.04 0 0.97 0.13 0.97 1.0 0.054 55.31 185.28 0.634 11.65 0.96 0.66 0.67 0.67 1.37 1.0 0.031 1.00 129.96 0.284 17.47 14.56 2 1.5166927 111.9 10.713 129.962
7.710 5600.99 67.0 0.509 67.0 2.8 1.20 0.76%Sand Tailings 0.062 123.5 0.42 0.08 0.34 1 1.53 102.854 1429.67 119.49 197 0.76% 1.6 18% 1.05 0.00 1.05 0 0.97 0.12 0.98 1.0 0.054 52.64 172.13 0.430 7.89 0.95 0.63 0.68 0.68 1.34 1.0 0.031 1.00 119.49 0.239 14.46 11.18 2 1.5349015 102.88 9.8497 119.489
7.874 5600.83 74.0 0.388 74.0 2.7 1.16 0.52%Sand Tailings 0.062 123.5 0.43 0.08 0.34 1 1.50 111.005 1542.97 128.95 215 0.53% 1.5 18% 1.06 0.00 1.06 0 0.96 0.13 0.97 1.0 0.054 55.06 184.01 0.608 11.22 0.95 0.66 0.67 0.67 1.35 1.0 0.031 1.00 128.95 0.279 16.69 13.95 2 1.4996592 111.03 10.63 128.954
8.038 5600.66 73.6 0.370 73.6 3.4 1.48 0.50%Sand Tailings 0.062 123.5 0.44 0.09 0.35 1 1.49 109.856 1527.01 127.63 210 0.51% 1.5 18% 1.07 0.00 1.07 0 0.96 0.13 0.97 1.0 0.054 54.72 182.35 0.576 10.65 0.95 0.65 0.67 0.67 1.34 1.0 0.031 1.00 127.63 0.273 16.10 13.37 2 1.493427 109.89 10.521 127.629
8.202 5600.50 70.8 0.387 70.8 3.7 1.61 0.55%Sand Tailings 0.062 123.5 0.45 0.09 0.35 1 1.50 105.908 1472.12 123.05 200 0.55% 1.5 18% 1.08 0.00 1.08 0 0.96 0.13 0.97 1.0 0.054 53.55 176.59 0.485 8.97 0.95 0.64 0.68 0.68 1.33 1.0 0.032 1.00 123.05 0.253 14.71 11.84 2 1.4954504 105.94 10.143 123.046
8.366 5600.33 61.3 0.408 61.3 4.3 1.88 0.67%Sand Tailings 0.062 123.5 0.46 0.10 0.36 1 1.52 93.454 1299.01 108.59 170 0.67% 1.6 18% 1.09 0.00 1.09 0 0.96 0.11 0.97 1.0 0.054 49.85 158.44 0.316 5.84 0.95 0.60 0.70 0.70 1.30 1.0 0.032 1.00 108.59 0.199 11.40 8.62 2 1.5240349 93.495 8.9512 108.589
8.530 5600.17 54.8 0.384 54.8 3.9 1.69 0.70%Sand Tailings 0.062 123.5 0.47 0.10 0.36 1 1.54 84.591 1175.81 98.29 150 0.71% 1.7 18% 1.10 0.00 1.10 0 0.96 0.10 0.97 1.0 0.054 47.22 145.51 0.252 4.66 0.95 0.57 0.71 0.71 1.28 1.0 0.033 1.02 100.58 0.175 9.87 7.27 2 1.5433477 84.629 8.1023 98.291
8.694 5600.01 51.9 0.384 51.9 4.9 2.12 0.74%Sand Tailings 0.062 123.5 0.48 0.11 0.37 1 1.55 80.294 1116.09 93.31 140 0.75% 1.7 18% 1.11 0.00 1.11 0 0.96 0.10 0.97 1.0 0.054 45.94 139.26 0.230 4.25 0.95 0.56 0.72 0.72 1.27 1.0 0.033 1.05 97.92 0.167 9.33 6.79 2 1.5476904 80.342 7.6919 93.312
8.858 5599.84 50.9 0.369 50.9 5.6 2.43 0.73%Sand Tailings 0.062 123.5 0.49 0.11 0.37 1 1.54 78.492 1091.04 91.23 135 0.73% 1.7 18% 1.12 0.00 1.12 0 0.96 0.10 0.97 1.0 0.054 45.41 136.64 0.222 4.11 0.95 0.55 0.72 0.72 1.26 1.0 0.033 1.05 96.09 0.163 8.95 6.53 2 1.5433018 78.546 7.52 91.227
9.022 5599.68 49.7 0.378 49.7 5.8 2.50 0.76%Sand Tailings 0.062 123.5 0.50 0.12 0.38 1 1.54 76.518 1063.60 88.94 130 0.77% 1.7 18% 1.13 0.00 1.13 0 0.96 0.10 0.97 1.0 0.054 44.83 133.76 0.213 3.96 0.95 0.54 0.73 0.73 1.25 1.0 0.034 1.07 95.21 0.160 8.71 6.33 2 1.539604 76.574 7.3312 88.936
9.186 5599.51 42.3 0.401 42.3 5.9 2.56 0.95%Sand Tailings 0.062 123.5 0.51 0.12 0.38 1 1.57 66.297 921.53 77.07 109 0.96% 1.9 18% 1.14 0.00 1.14 0 0.96 0.09 0.97 1.0 0.054 41.79 118.86 0.177 3.29 0.95 0.51 0.75 0.75 1.23 1.0 0.034 1.16 89.46 0.147 7.86 5.57 2 1.5669354 66.355 6.3528 77.067
9.350 5599.35 35.3 0.359 35.3 5.1 2.19 1.02%Sand-Slime Tailing 0.059 119.0 0.52 0.13 0.39 1 1.60 56.332 783.02 65.48 90 1.03% 2.0 47% 1.15 0.00 1.15 0 0.96 0.08 0.98 1.0 0.054 53.27 118.75 0.177 3.28 0.95 0.47 0.77 0.77 1.21 1.0 0.035 1.25 81.59 0.131 6.92 5.10 2 1.5980729 56.383 5.3981 65.485
9.514 5599.19 31.3 0.268 31.2 5.2 2.24 0.86%Sand-Slime Tailing 0.059 119.0 0.53 0.13 0.39 1 1.61 50.398 700.54 58.60 78 0.87% 2.0 47% 1.16 0.00 1.16 0 0.95 0.08 0.98 1.0 0.054 50.85 109.45 0.159 2.95 0.95 0.44 0.78 0.78 1.19 1.0 0.035 1.25 73.12 0.116 6.10 4.52 2 1.6142974 50.45 4.8301 58.595
9.678 5599.02 41.5 0.241 41.4 6.6 2.87 0.58%Sand Tailings 0.062 123.5 0.54 0.14 0.40 1 1.54 63.961 889.06 74.36 103 0.59% 1.8 18% 1.17 0.00 1.17 0 0.95 0.09 0.97 1.0 0.054 41.10 115.46 0.170 3.18 0.95 0.50 0.75 0.75 1.21 1.0 0.035 1.08 80.27 0.128 6.63 4.90 2 1.5442154 64.025 6.1298 74.361
9.842 5598.86 40.4 0.177 40.3 6.1 2.63 0.44%Sand Tailings 0.062 123.5 0.55 0.14 0.40 1 1.54 62.123 863.51 72.22 99 0.44% 1.7 18% 1.18 0.00 1.18 0 0.95 0.09 0.97 1.0 0.054 40.55 112.77 0.165 3.08 0.95 0.49 0.75 0.75 1.21 1.0 0.035 1.05 75.47 0.120 6.14 4.61 2 1.5403705 62.182 5.9533 72.220
10.006 5598.69 28.6 0.177 28.5 5.9 2.55 0.62%Sand-Slime Tailing 0.059 119.0 0.56 0.15 0.41 1 1.60 45.687 635.05 53.13 69 0.63% 1.9 47% 1.19 0.00 1.19 0 0.95 0.07 0.98 1.0 0.054 48.94 102.07 0.146 2.72 0.95 0.42 0.79 0.79 1.17 1.0 0.036 1.21 64.44 0.105 5.31 4.01 2 1.6008107 45.746 4.3797 53.131
10.170 5598.53 30.6 0.160 30.5 5.3 2.29 0.52%Sand-Slime Tailing 0.059 119.0 0.57 0.16 0.41 1 1.58 48.157 669.38 55.99 73 0.53% 1.9 47% 1.20 0.00 1.20 0 0.95 0.07 0.97 1.0 0.054 49.94 105.93 0.153 2.85 0.95 0.43 0.78 0.78 1.17 1.0 0.036 1.16 64.84 0.105 5.27 4.06 2 1.5778694 48.209 4.6155 55.991
10.335 5598.37 30.2 0.173 30.1 5.8 2.51 0.57%Sand-Slime Tailing 0.059 119.0 0.58 0.16 0.42 1 1.57 47.326 657.83 55.03 71 0.58% 1.9 47% 1.21 0.00 1.21 0 0.95 0.07 0.97 1.0 0.053 49.60 104.63 0.150 2.81 0.95 0.43 0.79 0.79 1.17 1.0 0.036 1.18 65.18 0.106 5.23 4.02 2 1.5707235 47.383 4.5364 55.032
10.499 5598.20 28.4 0.178 28.4 6.7 2.89 0.63%Sand-Slime Tailing 0.059 119.0 0.59 0.17 0.42 1 1.57 44.580 619.66 51.85 66 0.64% 1.9 47% 1.22 0.00 1.22 0 0.95 0.07 0.97 1.0 0.053 48.49 100.34 0.143 2.68 0.95 0.42 0.79 0.79 1.16 1.0 0.036 1.23 63.89 0.104 5.11 3.89 2 1.5724903 44.646 4.2744 51.853
10.663 5598.04 24.0 0.188 24.0 6.8 2.94 0.78%Sand-Slime Tailing 0.059 119.0 0.60 0.17 0.43 1 1.59 38.157 530.38 44.40 55 0.80% 2.1 47% 1.23 0.00 1.23 0 0.95 0.07 0.98 1.0 0.053 45.87 90.27 0.127 2.38 0.95 0.38 0.80 0.80 1.15 1.0 0.036 1.39 61.79 0.102 4.94 3.66 2 1.5931884 38.224 3.6596 44.395
10.827 5597.87 22.1 0.178 22.0 7.3 3.16 0.81%Sand-Slime Tailing 0.059 119.0 0.61 0.18 0.43 1 1.60 35.208 489.40 40.98 50 0.83% 2.1 47% 1.24 0.00 1.24 0 0.95 0.07 0.98 1.0 0.053 44.67 85.65 0.121 2.26 0.95 0.37 0.80 0.80 1.15 1.0 0.036 1.46 60.03 0.100 4.80 3.53 2 1.5974781 35.281 3.3778 40.977
10.991 5597.71 19.0 0.177 19.0 8.1 3.53 0.93%Sand-Slime Tailing 0.059 119.0 0.62 0.18 0.43 1 1.61 30.600 425.34 35.64 42 0.96% 2.2 47% 1.25 0.00 1.25 0 0.94 0.06 0.98 1.0 0.053 42.80 78.43 0.111 2.07 0.95 0.34 0.80 0.80 1.15 1.0 0.036 1.67 59.45 0.100 4.72 3.40 2 1.6122245 30.682 2.9375 35.635
11.155 5597.55 14.9 0.165 14.8 11.6 5.03 1.11%Sand-Slime Tailing 0.059 119.0 0.62 0.19 0.44 1 1.64 24.349 338.45 28.42 33 1.15% 2.3 47% 1.26 0.00 1.26 0 0.94 0.06 0.98 1.0 0.053 40.27 68.69 0.098 1.84 0.95 0.31 0.80 0.80 1.14 1.0 0.036 2.09 59.25 0.099 4.67 3.25 2 1.6407745 24.468 2.3426 28.418
11.319 5597.38 13.9 0.096 13.8 17.0 7.37 0.69%Sand-Slime Tailing 0.059 119.0 0.63 0.19 0.44 1 1.64 22.664 315.02 26.52 30 0.72% 2.3 47% 1.27 0.00 1.27 0 0.94 0.06 0.98 1.0 0.053 39.60 66.13 0.095 1.78 0.95 0.30 0.80 0.80 1.14 1.0 0.037 1.85 48.98 0.091 4.22 3.00 2 1.6399091 22.838 2.1865 26.525
11.483 5597.22 19.1 0.146 19.1 12.4 5.36 0.76%Sand-Slime Tailing 0.059 119.0 0.64 0.20 0.45 1 1.58 30.094 418.31 35.09 41 0.79% 2.2 47% 1.28 0.00 1.28 0 0.94 0.06 0.98 1.0 0.053 42.61 77.70 0.110 2.06 0.95 0.34 0.80 0.80 1.14 1.0 0.037 1.59 55.68 0.096 4.42 3.24 2 1.5797597 30.216 2.8929 35.094
11.647 5597.05 13.8 0.173 13.8 11.9 5.15 1.25%Sand-Slime Tailing 0.059 119.0 0.65 0.20 0.45 1 1.62 22.264 309.47 26.00 29 1.31% 2.4 47% 1.29 0.00 1.29 0 0.94 0.06 0.98 1.0 0.053 39.42 65.42 0.094 1.77 0.95 0.29 0.80 0.80 1.14 1.0 0.037 2.36 61.36 0.101 4.63 3.20 2 1.6180172 22.384 2.143 25.998
11.811 5596.89 11.6 0.154 11.5 16.0 6.92 1.33%Sand-Slime Tailing 0.059 119.0 0.66 0.21 0.46 1 1.63 18.706 260.01 21.91 24 1.41% 2.5 47% 1.30 0.00 1.30 0 0.94 0.05 0.98 1.0 0.053 37.99 59.90 0.088 1.65 0.95 0.27 0.80 0.80 1.13 1.0 0.037 2.78 60.88 0.101 4.56 3.11 2 1.6322579 18.868 1.8065 21.915
11.975 5596.73 15.5 0.105 15.4 21.0 9.12 0.68%Sand-Slime Tailing 0.059 119.0 0.67 0.21 0.46 1 1.58 24.265 337.29 28.42 32 0.71% 2.2 47% 1.31 0.00 1.31 0 0.94 0.06 0.98 1.0 0.053 40.27 68.69 0.098 1.85 0.94 0.31 0.80 0.80 1.13 1.0 0.037 1.76 50.09 0.092 4.10 2.98 2 1.5797785 24.473 2.343 28.424
12.139 5596.56 15.7 0.104 15.6 11.4 4.93 0.66%Sand-Slime Tailing 0.059 119.0 0.68 0.22 0.47 1 1.57 24.469 340.12 28.55 32 0.69% 2.2 47% 1.32 0.00 1.32 0 0.94 0.06 0.98 1.0 0.053 40.31 68.86 0.098 1.86 0.94 0.31 0.80 0.80 1.13 1.0 0.037 1.75 49.90 0.092 4.05 2.96 2 1.5675475 24.581 2.3534 28.549
12.303 5596.40 14.7 0.073 14.6 11.8 5.11 0.50%Sand-Slime Tailing 0.059 119.0 0.69 0.22 0.47 1 1.57 22.852 317.64 26.67 30 0.52% 2.2 47% 1.33 0.00 1.33 0 0.94 0.06 0.98 1.0 0.053 39.66 66.33 0.095 1.80 0.94 0.30 0.80 0.80 1.13 1.0 0.037 1.69 44.97 0.087 3.84 2.82 2 1.5662713 22.967 2.1989 26.675
Youd, et al (2001)
Max. Horiz. Acceleration, Amax/g: 0.15
Earthquake Moment Magnitude, M: 5.5
Magnitude Scaling Factor, MSF:
Equil
Pore
Pressure at time of
Conditions at t1 Liquefaction Triggering Analyses Idriss & Boulanger (2008)Equil
Pore
Pressure
at t1CN qc1 qc1 qc1N
Normalized Cone
Penetration Resistance, Qt
Normalized Friction
Ratio, Fr (%) Liquefiable?
1=Yes2=No
Cyclic Stress Ratio Cyclic Resistance Ratio
Effective
Stress at
t1
Saturated
at t1
Idriss & Boulanger (2008)
Idriss and Boulanger (2008)
Max. Horiz. Acceleration, Amax/g:
Earthquake Moment Magnitude, M:
Magnitude Scaling Factor, MSF:
WHITE MESA TAILINGS REPOSITORY LIQUEFACTION AND SEISMIC SETTLEMENT ANALYSES - 3-8S Elev. at
Top of Layer
(ft)
Elev. At Midpoint of Layer
(ft)
Bottom of Layer
(ft)
Thickness of
Layer (ft)
Pw (u2)Pw (u2)
2013 CPT Data from ConeTec CPT Data Interpretations
fs/qt
Material Type (as
determined by fines
Unit Weight Unit Weight
Total
Stress
at time of CPT
Depth
at time of CPT Elevation qt fs qc
Effective
Stress at
time of CPT
Saturated
at time of CPT
Youd et al. (2001)Type Index,
Ic FC
Total
Stress at
t1
Water Storage/Rooting Zone Layer
High Compaction Layer
Platform/Random Fill Layer
FoS
Cyclic Stress Ratio
FoS
CSR
M=7.5,
s'v=1atm
∆qc1n qc1n-cs
(CRR)
M=7.5,
s'v=1atm
CSR
M=7.5,
s'v=1atm
Kc qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Scaling Factor for stress ration, rm
Volumetric Strain Ratio for Site-Specific Design Earthq
Equiv. Number of Uniform Strain Cycles, N
Equil Pore Pressure at Midpoint of
Layer (tsf)
Stress at Bottom of Layer
(tsf)
Stress at Midpoint of Layer
(tsf)FINAL COVER
Erosion Protection Layer
Unit Weigh
t (tcf)
Unit Weight
(pcf)
Stress at Bottom of Layer
(tsf)
Stress at Midpoint of Layer
(tsf)
qPressure
at Bottom of Layer
(tsf)
Liquef_SeismicSettle_30Aug2015.xls Page 35 of 36
Energy Fuels Resources (USA) Inc.White Mesa Mill
Liquefaction Analyses
Data File: 13-52106_SP3-8S-BSC-CPT 5603.50 Water surface elevation during CPT investigation (ft am5608.70 Ground Surface Elevation at time of CPT (ft amsl)
Location: White Mesa 2013 CPT Investigation 0.15 5600.42 Water surface elevation at t0 (ft amsl)5620.45 Ground Surface Elevation Immediately after Placement of Final Cover (ft amsl)
..\..\..\6.2.3 Field Data\2013 Field Investigation\Conetec Data 5.5 5590.63 Water surface elevation at t1 (ft amsl)0.50 Thickness of Erosion Protection Layer (rock mulch/topsoils) Immediately after plac 5620.45 5620.2 5619.95 0.50 0.055 110 0.028 0.014 0.00 0.00 0.028 0.014
Tailings Sands 1.69 5585.63 Water surface elevation at t2 (ft amsl)3.50 Thickness of Water Storage/Rooting Zone (ft) 5619.95 5618.2 5616.45 3.50 0.054 107 0.215 0.121 0.00 0.00 0.215 0.121
Tailings Sand-Slimes 3.50 Thickness of High Compaction Layer (ft)5616.45 5614.7 5612.95 3.50 0.060 120 0.424 0.320 0.00 0.00 0.424 0.320
Tailings Slimes 1.44 4.25 Thickness of Random/Platform Fill on on top of existing interim cover (ft) 5612.95 5610.825 5608.70 4.25 0.050 101 0.638 0.531 0.00 0.00 0.638 0.531
Interim Cover 0.47 1273.89 Additional Stress due to Final Cover Placement, ΔσFC (psf)
Cells Requiring User Input/Manipulation 2.21 2.21 7.51 5585.63 Elevation of bottom of tailings (liner) (ft amsl)
rd Cσ Kσ Ka rd Dr ffKσ Ka Avg CN qc1 qc1 qc1N
(ft) (ft amsl) TSF TSF TSF (ft) PSI (%) (tcf) (pcf) (tsf)(tsf)(tsf) 1=Yes TSF MPa % (tsf)(tsf)(tsf) 1=Yes FoS TSF MPa
0=No 0=No
Youd, et al (2001)
Max. Horiz. Acceleration, Amax/g: 0.15
Earthquake Moment Magnitude, M: 5.5
Magnitude Scaling Factor, MSF:
Equil
Pore
Pressure at time of
Conditions at t1 Liquefaction Triggering Analyses Idriss & Boulanger (2008)Equil
Pore
Pressure
at t1CN qc1 qc1 qc1N
Normalized Cone
Penetration Resistance, Qt
Normalized Friction
Ratio, Fr (%) Liquefiable?
1=Yes2=No
Cyclic Stress Ratio Cyclic Resistance Ratio
Effective
Stress at
t1
Saturated
at t1
Idriss & Boulanger (2008)
Idriss and Boulanger (2008)
Max. Horiz. Acceleration, Amax/g:
Earthquake Moment Magnitude, M:
Magnitude Scaling Factor, MSF:
WHITE MESA TAILINGS REPOSITORY LIQUEFACTION AND SEISMIC SETTLEMENT ANALYSES - 3-8S Elev. at
Top of Layer
(ft)
Elev. At Midpoint of Layer
(ft)
Bottom of Layer
(ft)
Thickness of
Layer (ft)
Pw (u2)Pw (u2)
2013 CPT Data from ConeTec CPT Data Interpretations
fs/qt
Material Type (as
determined by fines
Unit Weight Unit Weight
Total
Stress
at time of CPT
Depth
at time of CPT Elevation qt fs qc
Effective
Stress at
time of CPT
Saturated
at time of CPT
Youd et al. (2001)Type Index,
Ic FC
Total
Stress at
t1
Water Storage/Rooting Zone Layer
High Compaction Layer
Platform/Random Fill Layer
FoS
Cyclic Stress Ratio
FoS
CSR
M=7.5,
s'v=1atm
∆qc1n qc1n-cs
(CRR)
M=7.5,
s'v=1atm
CSR
M=7.5,
s'v=1atm
Kc qc1n-cs
(CRR)
M=7.5,
s'v=1atm
Scaling Factor for stress ration, rm
Volumetric Strain Ratio for Site-Specific Design Earthq
Equiv. Number of Uniform Strain Cycles, N
Equil Pore Pressure at Midpoint of
Layer (tsf)
Stress at Bottom of Layer
(tsf)
Stress at Midpoint of Layer
(tsf)FINAL COVER
Erosion Protection Layer
Unit Weigh
t (tcf)
Unit Weight
(pcf)
Stress at Bottom of Layer
(tsf)
Stress at Midpoint of Layer
(tsf)
qPressure
at Bottom of Layer
(tsf)
12.467 5596.23 12.9 0.081 12.8 12.1 5.25 0.63%Sand-Slime Tailing 0.059 119.0 0.70 0.23 0.48 1 1.57 20.146 280.04 23.54 26 0.66% 2.3 47% 1.34 0.00 1.34 0 0.93 0.05 0.98 1.0 0.053 38.56 62.09 0.090 1.71 0.94 0.28 0.80 0.80 1.13 1.0 0.037 1.98 46.69 0.089 3.86 2.79 2 1.572711 20.265 1.9402 23.537
12.631 5596.07 13.9 0.074 13.8 9.8 4.25 0.53%Sand-Slime Tailing 0.059 119.0 0.71 0.23 0.48 1 1.55 21.485 298.64 25.06 27 0.56% 2.3 47% 1.35 0.00 1.35 0 0.93 0.06 0.97 1.0 0.053 39.09 64.16 0.093 1.76 0.94 0.29 0.80 0.80 1.12 1.0 0.037 1.80 45.15 0.088 3.77 2.77 2 1.5523965 21.58 2.0661 25.064
12.795 5595.90 13.8 0.074 13.8 10.5 4.55 0.53%Sand-Slime Tailing 0.059 119.0 0.72 0.24 0.49 1 1.54 21.243 295.27 24.79 27 0.56% 2.3 47% 1.36 0.00 1.36 0 0.93 0.06 0.97 1.0 0.052 39.00 63.79 0.092 1.76 0.94 0.29 0.80 0.80 1.12 1.0 0.037 1.82 45.16 0.088 3.74 2.75 2 1.542676 21.344 2.0435 24.789
12.959 5595.74 14.6 0.071 14.5 12.1 5.22 0.49%Sand-Slime Tailing 0.059 119.0 0.73 0.24 0.49 1 1.53 22.185 308.37 25.90 28 0.51% 2.2 47% 1.37 0.00 1.37 0 0.93 0.06 0.97 1.0 0.052 39.39 65.28 0.094 1.79 0.94 0.29 0.80 0.80 1.12 1.0 0.037 1.72 44.57 0.087 3.68 2.74 2 1.5257894 22.3 2.135 25.900
13.123 5595.58 15.1 0.085 15.0 12.9 5.59 0.56%Sand-Slime Tailing 0.059 119.0 0.74 0.25 0.49 1 1.51 22.654 314.89 26.45 29 0.59% 2.2 47% 1.38 0.00 1.38 0 0.93 0.06 0.97 1.0 0.052 39.58 66.03 0.095 1.81 0.94 0.30 0.80 0.80 1.12 1.0 0.037 1.77 46.90 0.089 3.73 2.77 2 1.5122892 22.776 2.1806 26.453
13.287 5595.41 18.1 0.188 18.0 15.1 6.54 1.04%Sand-Slime Tailing 0.059 119.0 0.75 0.25 0.50 1 1.48 26.626 370.11 31.09 35 1.09% 2.3 47% 1.39 0.00 1.39 0 0.93 0.06 0.97 1.0 0.052 41.20 72.29 0.102 1.97 0.94 0.32 0.80 0.80 1.12 1.0 0.037 1.96 60.82 0.101 4.19 3.08 2 1.480883 26.766 2.5626 31.087
13.451 5595.25 14.3 0.276 14.2 17.2 7.45 1.93%Sand-Slime Tailing 0.059 119.0 0.76 0.26 0.50 1 1.50 21.326 296.43 24.96 27 2.03% 2.5 47% 1.40 0.00 1.40 0 0.93 0.06 0.97 1.0 0.052 39.05 64.01 0.092 1.77 0.94 0.29 0.80 0.80 1.11 1.0 0.037 3.03 75.54 0.120 4.94 3.36 2 1.4986703 21.487 2.0572 24.956
13.615 5595.08 12.3 0.228 12.1 23.3 10.08 1.86%Sand-Slime Tailing 0.059 119.0 0.77 0.26 0.51 1 1.51 18.270 253.95 21.47 23 1.98% 2.6 47% 1.41 0.00 1.41 0 0.93 0.05 0.97 1.0 0.052 37.83 59.31 0.087 1.67 0.94 0.27 0.80 0.80 1.11 1.0 0.037 3.35 71.88 0.115 4.67 3.17 2 1.506168 18.489 1.7701 21.473
13.779 5594.92 10.8 0.190 10.7 27.0 11.70 1.75%Sand-Slime Tailing 0.059 119.0 0.78 0.27 0.51 1 1.50 15.970 221.98 18.84 20 1.89% 2.6 47% 1.42 0.00 1.42 0 0.92 0.05 0.97 1.0 0.052 36.91 55.75 0.083 1.60 0.94 0.25 0.80 0.80 1.11 1.0 0.037 3.60 67.84 0.109 4.41 3.00 2 1.4981009 16.222 1.5531 18.841
13.943 5594.76 8.0 0.181 7.7 47.3 20.48 2.26%Slime Tailings 0.057 113.1 0.79 0.27 0.52 1 1.49 11.507 159.95 13.88 14 2.50% 2.8 71% 1.43 0.00 1.43 0 0.92 0.05 0.98 1.0 0.052 34.92 48.80 0.076 1.47 0.94 0.22 0.80 0.80 1.11 1.0 0.037 5.07 70.29 0.112 4.51 2.99 2 1.4886778 11.947 1.1438 13.875
14.107 5594.59 10.0 0.115 9.6 60.9 26.40 1.15%Sand-Slime Tailing 0.059 119.0 0.80 0.28 0.52 1 1.48 14.251 198.09 17.20 18 1.25% 2.6 47% 1.44 0.00 1.44 0 0.92 0.05 0.97 1.0 0.052 36.34 53.54 0.081 1.56 0.94 0.24 0.80 0.80 1.11 1.0 0.037 3.23 55.51 0.096 3.82 2.69 2 1.478327 14.813 1.4182 17.205
14.271 5594.43 12.7 0.137 12.5 34.5 14.95 1.08%Sand-Slime Tailing 0.059 119.0 0.81 0.28 0.53 1 1.46 18.326 254.73 21.65 23 1.15% 2.5 47% 1.45 0.00 1.45 0 0.92 0.05 0.97 1.0 0.052 37.89 59.55 0.087 1.69 0.94 0.27 0.80 0.80 1.10 1.0 0.038 2.64 57.06 0.097 3.84 2.76 2 1.4648967 18.641 1.7847 21.651
14.436 5594.26 8.1 0.129 7.9 39.8 17.23 1.59%Slime Tailings 0.057 113.1 0.82 0.29 0.53 1 1.46 11.483 159.62 13.76 14 1.77% 2.8 71% 1.46 0.00 1.46 0 0.92 0.05 0.97 1.0 0.052 34.88 48.64 0.076 1.47 0.94 0.21 0.80 0.80 1.10 1.0 0.038 4.42 60.74 0.101 3.95 2.71 2 1.4591381 11.846 1.1341 13.758
14.600 5594.10 6.3 0.101 6.0 61.5 26.64 1.59%Slime Tailings 0.057 113.1 0.83 0.29 0.54 1 1.45 8.629 119.94 10.67 10 1.83% 2.9 71% 1.47 0.00 1.47 0 0.92 0.05 0.98 1.0 0.052 33.80 44.47 0.072 1.40 0.94 0.19 0.80 0.80 1.10 1.0 0.038 5.42 57.80 0.098 3.81 2.60 2 1.4502622 9.1857 0.8794 10.669
14.764 5593.94 6.0 0.095 5.6 71.3 30.89 1.58%Slime Tailings 0.057 113.1 0.84 0.30 0.54 1 1.44 8.029 111.61 10.07 10 1.83% 2.9 71% 1.47 0.00 1.47 0 0.92 0.05 0.98 1.0 0.052 33.59 43.67 0.072 1.39 0.94 0.18 0.80 0.80 1.10 1.0 0.038 5.66 57.05 0.097 3.75 2.57 2 1.4415084 8.6707 0.8301 10.071
14.928 5593.77 5.9 0.056 5.5 66.0 28.61 0.95%Slime Tailings 0.057 113.1 0.85 0.30 0.54 1 1.43 7.895 109.74 9.86 9 1.10% 2.8 71% 1.48 0.00 1.48 0 0.92 0.05 0.98 1.0 0.052 33.52 43.38 0.071 1.38 0.94 0.18 0.80 0.80 1.10 1.0 0.038 4.79 47.20 0.089 3.42 2.40 2 1.4328741 8.4858 0.8124 9.856
15.092 5593.61 6.8 0.056 6.5 47.2 20.44 0.82%Sand-Slime Tailing 0.059 119.0 0.86 0.31 0.55 1 1.42 9.295 129.20 11.28 11 0.94% 2.7 47% 1.49 0.00 1.49 0 0.91 0.05 0.97 1.0 0.052 34.26 45.54 0.073 1.42 0.94 0.19 0.80 0.80 1.09 1.0 0.038 4.07 45.87 0.088 3.35 2.39 2 1.4233829 9.7137 0.93 11.282
15.256 5593.44 9.0 0.056 8.7 40.6 17.59 0.63%Sand-Slime Tailing 0.059 119.0 0.87 0.31 0.55 1 1.41 12.302 171.00 14.70 15 0.69% 2.5 47% 1.50 0.00 1.50 0 0.91 0.05 0.97 1.0 0.051 35.46 50.16 0.078 1.51 0.94 0.22 0.80 0.80 1.09 1.0 0.038 2.96 43.56 0.086 3.25 2.38 2 1.4140338 12.66 1.2121 14.704
Liquef_SeismicSettle_30Aug2015.xls Page 36 of 36
Updated Tailings Cover Design Report
APPENDIX G

EROSIONAL STABILITY EVALUATION
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G.1 INTRODUCTION
This appendix presents the hydrologic analysis and evaluation of erosion protection for the cover
surface of the White Mesa Mill tailings disposal cells, and for the discharge channel and
sedimentation basin. These analyses are an update to the analyses presented in MWH (2011) to incorporate revisions to the analyses to address State of Utah, Division of Waste Management
and Radiation Control (DWMRC) (formerly Utah Division of Radiation Control, DRC) interrogatories (DRC, 2012) and review comments on EFRI responses to 2012 interrogatories (DRC, 2013). These analyses also incorporate the revised cover grading design and results of
cover material testing conducted in 2010 and 2012 (summarized in Attachment B of EFRI, 2012). These analyses have been conducted in a manner consistent with Nuclear Regulatory Commission (NRC) guidelines documented in NRC (1990) and Johnson (2002). The analyses
include the tasks listed below.
1. Selection of the Probable Maximum Precipitation (PMP) as the design event for the
site.
2. Calculation of the peak discharge (due to the PMP) from the surfaces of Cells 1, 2, 3,
4A and 4B for the cover surface, and for the drainage basin for the discharge channel.
3. Evaluation of reclaimed tailings disposal cell surfaces for erosional stability (the top surfaces and the reclaimed embankment slopes) and evaluation of the discharge
channel and sedimentation basin for erosional stability.
4. Evaluation of the need for filter material between erosional protection riprap and underlying soil layers on the reclaimed embankment slopes and the rock aprons.
5. Evaluation of the need for a rock apron at the toe of the reclaimed embankment slopes to accommodate flow transitioning from embankment slopes to native ground.
6. Evaluation of surface sheet erosion of top surface of cells due to action of surface
water and wind. These tasks are presented in the following sections of this appendix.
G.2 CONCEPTUAL EROSIONAL PROTECTION DESIGN
Erosional protection was evaluated for the proposed monolithic ET cover design based on the
following proposed cover surface of the tailings disposal cells, as well as for the sedimentation basin and diversion channel:

• Cells 2 and 3 top surfaces graded to 0.5 percent slope: Erosional protection is provided
by 6 inches of topsoil vegetated with a grass mixture providing poor or better vegetated
conditions with a minimum of 30 percent plant coverage (conservative vegetation conditions for erosional stability calculations).
• Portions of Cell 1 and 2 with top surfaces graded at 1 percent slope and Cells 4A and 4B with top surfaces at 0.8 percent slope: Erosional protection is provided by 6 inches of
topsoil mixed with 25 percent (by weight) of 1-inch minus (D100 = 1 inch) gravel, vegetated
with a grass mixture providing poor or better vegetated conditions with a minimum of 30 percent plant coverage (conservative vegetation conditions for erosional stability
calculations).
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• External side slopes graded to 5 horizontal to 1 vertical (5H:1V): Erosional protection is
provided by various sized angular and rounded riprap with thicknesses ranging from 6 to
8 inches and minimum D50’s ranging from 1.7 to 5.3 inches. Filter material will be placed between the erosional protection and the underlying soil layer in locations with riprap
greater than 1.7 inches. A narrow zone of this filter will also be placed at the interface
between the riprap on the external side slopes and the cover surface erosion protection layer.
• A rock apron at the toe of 5H:1V slopes: Erosional protection and scour protection on the west and east sides of the cells is provided by a rock apron measuring 10.2 inches deep
and 4.25 feet in width, with a D50 of 3.4 inches. On the south side of cells 4A and 4B, and
east side of Cell 4A, the rock apron measures 2.7 feet in depth, 13.2 feet in width, and has a D50 of 10.6 inches. On the north side slope of the Cell 1 disposal area, the rock apron
measures 2.3 feet deep, 11.3 feet wide, and contains a minimum D50 of 9.0 inches.
• Sedimentation Basin area graded to 0.1 percent slope: Erosional protection is provided
by 6 inches of topsoil vegetated with a grass mixture providing poor or better vegetated
conditions with a minimum of 30 percent plant coverage (conservative vegetation conditions for erosional stability calculations).
• Diversion Channel: The diversion channel will be excavated into bedrock.
G.3 PROBABLE MAXIMUM PRECIPITATION EVENT
As outlined in NRC (1990) and Johnson (2002), the design event for evaluation of long-term erosional stability of the reclaimed tailings disposal cells is the PMP. The selected PMP events
used to calculate the peak discharges for evaluation of erosional stability were the six-hour duration PMP (with a precipitation total of 9.6 inches) and the one-hour duration PMP (with a precipitation total of 8.3 inches). These events were determined for the site area using
“Hydrometeorological Report (HMR) No. 49: Probable Maximum Precipitation Estimates, Colorado River and Great Basin Drainages (Hansen et al. 1984) , as well as Jensen (1995).
Rainfall depth versus duration for short-term events (less than 1 hour) was developed using
procedures in HMR 49 and NUREG/CR-4620 (Nelson et al., 1986). PMP calculations were provided in Denison (2009) and updated in Denison (2012). The calculations are provided in Attachment G.1.
G.4 CALCULATION OF PEAK DISCHARGE
The peak discharge calculations were made using the Rational Method as described in Johnson
(2002) and Nelson et al. (1986). The time of concentration was calculated for the longest flow path (see Figure G.1) across the tailings disposal cells using procedures by Kirpich, Soil
Conservation Service (SCS) and Brant and Oberman as presented in Nelson et al. (1986) and
DOE (1989). Equal weight was given to each of the three methods. A runoff coefficient of 1.0 was used to represent PMP conditions (DOE, 1989). These characteristics represent high runoff
quantities and peak flow velocities. The PMP discharge results across the tailings disposal cells are presented in Table G.1. These
discharges represent flow across a unit-width across the slope.

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Table G.1. Peak Reclaimed Surface Discharges
Location
Slope
Length (feet)
Time of
Concentration (min)
Rainfall
Intensity (in/hr) Runoff Coefficient
Peak Unit
Discharge (cfs/ft)
Upper reach of
Cell 2 at 1 %
slope
900 9.4 32.7 1.0 0.68
Lower reach of Cell 2 at 0.5 %
slope
550 18.5 21.4 1.0 0.71
Cell 3 at 0.5 %
slope 830 30.0 14.8 1.0 0.78
Cell 4A at 0.8 % slope 1200 42.2 11.2 1.0 0.90
Cell 4A side slopes at 20% slope 100 42.2 11.2 1.0 0.92
Note: Flow accumulates as it flows from Cell 2 to Cell 4A The unit discharge values in Table G.1 above were used to evaluate the erosional stability of the
reclaimed surfaces and size erosion protection materials where necessary. These evaluations
are presented in Sections G.5 and G.6.
G.5 EROSIONAL STABILITY OF VEGETATED SLOPES
The surface of the reclaimed tailings disposal cells was evaluated for erosional stability using the methods recommended in NRC (1990) and Johnson (2002).
Temple Method. Temple et al. (1987) outlines procedures for grass-lined channel design. These
procedures are recommended in Johnson (2002) for areas of vegetated cover and include
methods for estimating stresses on channel vegetation as well as the channel surface soils. The
evaluation for the tailings disposal cells used the peak discharge values from the PMP (summarized in Table G.1) to conservatively represent the effective stresses from runoff on the
cover surface. The stresses on both the vegetation and the soil were evaluated. The erosional stability of the cover surface for the tailings disposal cells was evaluated by
calculating a factor of safety against erosion due to the peak runoff from the PMP. Factor-of-safety values were calculated as the ratio of the allowable stresses (the resisting strength of the cover
vegetation or soils) to the effective stresses (the stresses impacted by the runoff flowing over the
cover). Two factors of safety were calculated for each analysis to evaluate both the resistance of the vegetation, and the resistance of the silty topsoil layer. The peak unit discharge flow for the
tailings disposal cells (from Table G.1) was conservatively multiplied by a concentration factor of
3 to account for channelization of flow.

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AlIowable stresses. Allowable stresses for the cover soils were calculated using the equations in Temple et al. (1987). Material planned for the upper layer of the cover system is the on-site
stockpiled topsoil. Laboratory testing of the topsoil conducted in 2010 (see Appendix A) indicates
the topsoil classifies as either a silty clay with sand or a sandy silty clay. The D75 (diameter of which 75 percent of the material is finer) is approximately 0.08 mm to 0.1 mm (.003 in to .004 in)
with a plasticity index (PI) of approximately 4 to 7. The resistance of a silty soil with a PI less than 10 is estimated to be approximately 0.02 psf (Temple et al., 1987). For noncohesive soils with a D75 greater than 0.05 in., the resistance is calculated as follows:
𝜏𝜏𝑎𝑎= 0.4𝐷𝐷75 , for soils with D75>0.05 in, 𝜏𝜏𝑎𝑎=0.02, for noncohesive soils with D75≤0.05 in.
Where
τa = allowable shear strength (psf), and
D75 = particle diameter in which 75 percent of the soil is finer (inch).
For areas where 1-inch gravel is added to the topsoil (25 percent by weight), the D75 of the topsoil
mixture will increase to approximately 0.2 inches.
As discussed in Appendix J of this report, the cover will be vegetated with a mixture of perennial
grasses (primarily wheatgrass, ricegrass, squirreltail, and fescue) and forbs (yarrow and sage).
The allowable vegetation shear strength is calculated as: 𝜏𝜏𝑣𝑣𝑎𝑎=0.75𝐶𝐶𝐼𝐼
Where
τva = allowable vegetation shear strength (in psf),
CI =cover index = 2.5 [h(M)1/2]1/3, h = stem length (ft), and
M = stem density factor (stems per square ft). Conservatively using poor vegetation conditions, h=1.0, M=67, and CI=5.03, the resulting
vegetation shear strength value is 3.78 psf.
Effective stresses. The effective shear stress on soil due to peak runoff from the PMP was
calculated as: 𝜏𝜏𝑒𝑒=𝛾𝛾𝛾𝛾𝛾𝛾�1 −𝐶𝐶𝑓𝑓�(𝑛𝑛𝑠𝑠/𝑛𝑛)2

Where
τe = effective shear stress (psf),
γ = unit weight of water = 62.4 pcf, d = depth of flow (ft), from Table G.2, S = slope of cover surface (ft/ft), from Table G.1,
Cf = cover factor (0.375 for poor vegetation), ns = soil roughness factor (0.0156 for soils with D75≤0.05 in., or 0.0256(D75)1/6 for D75 >
0.05 in), and
n = Manning's roughness coefficient for vegetated surface. 𝑛𝑛=𝑒𝑒𝐶𝐶𝑖𝑖�0.0133[ln𝑞𝑞]2−0.0954ln𝑞𝑞+0.297�−4.16
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The effective shear stress on vegetation is calculated as: 𝜏𝜏𝑣𝑣=𝛾𝛾𝛾𝛾𝛾𝛾−𝜏𝜏𝑒𝑒
Where
τv = effective vegetal stress (psf).
Conservatively using poor vegetation conditions, the effective shear stresses on soil and
vegetation on the tailings cover surfaces are summarized in Table G.2.
Table G.2. Effective Shear Stresses on Soil and Vegetation
Location
Description
of Erosion
Protection
Depth
of Flow1
(ft)
Soil Vegetation
Effective
Shear Stress
(psf)
Allowable
Shear Stress
(psf)
Factor of
Safety
Effective
Shear Stress
(psf)
Allowable
Shear Stress
(psf)
Factor of
Safety
Cell 1 at 1% slope
Vegetation and Gravel
(D75=0.2 in)
0.80 0.040 0.08 2.0 0.449 3.78 8.4
Cell 2 at 0.5 %
slope
Vegetation (D75 =
0.003 in)
1.01 0.019 0.02 1.1 0.297 3.78 12.7
Cell 2 at 1 % slope
Vegetation and gravel
(D75 = 0.2 in)
0.82 0.044 0.08 1.8 0.467 3.78 8.1
Cell 3 at
0.5 % slope
Vegetation
(D75 = 0.003 in) 1.05 0.021 0.02 1.0 0.306 3.78 12.4
Cells 4A
and 4B at 0.8 %
slope
Vegetation
and gravel (D75 = 0.2 in) 0.97 0.050 0.08 1.6 0.433 3.78 8.7
1 Calculated using a concentration factor of 3 for peak unit discharge
The calculated factors of safety above show that for poor vegetation conditions, the allowable shear strengths are equal to or higher than the effective shear stresses on both the vegetation
and the soil during peak discharge from the PMP. When vegetation conditions are good or better,
the soil factor of safety improves significantly, while the vegetation factor of safety decreases slightly, but remains well above 1.0. Further details of calculations can be found in Attachment
G.2.
These analyses indicate that the cover on the top surface of the tailings disposal cells can be
constructed as a vegetated slope. Top slopes at 0.5 percent slopes are adequately stable without the addition of gravel, while the 1 percent slope in Cell 2, and the 0.8 percent slope in Cells 4A and 4B will require the addition of approximately 25 percent of 1-inch-minus gravel.
G.6 EROSIONAL STABILITY OF ROCK-PROTECTED SIDE-SLOPES
Because of the difficulty in maintaining vegetation on side slopes, the 5:1 side slopes have been
designed for erosional protection assuming vegetation is minimal. The maximum unit discharge value from Table G.1 was used to size riprap for the embankment slopes. The Johnson and Abt
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method referenced in Johnson (2002) was used for the side slopes. The required angular rock size is calculated as follows:
𝐷𝐷50 =5.23𝛾𝛾0.43𝑞𝑞𝑑𝑑𝑒𝑒𝑠𝑠𝑑𝑑𝑑𝑑𝑑𝑑0.56

Where
D50 = median particle diameter of which 50 percent of the soil is finer (inch), S = slope (ft/ft), and
qdesign = design flow (cfs/ft).
Flow Characteristics. The peak unit discharge values from Table G.1 were used to represent
flow conditions across the cover surface and down the embankment side slopes south of Cells 4A and 4B. Concentration factors of 3 were used to account for channelization of flow. Rock Characteristics. A specific gravity of 2.65 was assumed for the riprap. The overall erosion protection design uses rounded and angular rock for the embankment side slopes. Angular rock
was selected for slopes where the required minimum D50 for rounded rock was too large to
produce. For areas where rounded rock was selected, the minimum D50 was increased by 40 percent in the design to account for rounded rock characteristics (Abt and Johnson, 1991). The
results of the riprap sizing for the embankment slopes are summarized in Table G.3 below.
Table G.3. Results of Riprap Sizing

Location Design Unit Discharge (cfs/ft) Slope (ft/ft) Concentration Factor Median Rock Size (inches)
Non-Accumulating Side Slopes (Rounded Rock) 0.06 0.20 3 1.7
Cell 4A and 4B southern side
slopes(Angular Rock) 0.87 0.20 3 5.3
Cell 1 Disposal Area side slope (Angular Rock) 0.65 0.20 3 4.5
Filter Requirements. NUREG-1623 (Johnson, 2002) recommends a filter or bedding layer be placed under the erosion protection if interstitial velocities are greater than 1 ft/s, in order to
prevent erosion of the underlying soils. Bedding is not required if interstitial velocities are less
than 0.5 ft/s, and are recommended depending on the characteristics of the underlying soil if velocities are between 0.5 and 1.0 ft/s.

Interstitial velocities are calculated by procedures presented by Abt et al. (1991) as given in the following equation: 𝑉𝑉𝑑𝑑=0.23(𝑔𝑔× 𝐷𝐷10 × 𝛾𝛾)0.5
Where
Vi = interstitial velocities (ft/s), G = acceleration due to gravity (ft/s2),
D10 = stone diameter at which 10 percent is finer (inches), and S = gradient in decimal form.
The maximum D10 of the erosion protection is estimated based on the D50 required for erosion protection, assuming the erosion protection will have a coefficient of uniformity (CU) of 6 and a band width of 5. Band width refers to the ratio of the minimum and maximum allowed particle
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sizes acceptable for any given percent finer designation. USDA (1994) recommends CU to be a maximum of 6 in order to prevent gap-grading of filters. Table G.4 summarizes the results for the
side slopes.
Table G.4. Results of Filter Requirements for Side Slopes

Location Non-Accumulating Side Slopes (Rounded Rock)
Cell 4A and 4B southern
side slopes(Angular Rock)
Cell 1 Disposal Area side slope (Angular Rock)
Minimum D50 (inches) 1.7 5.3 4.5
Maximum D10
(inches) 0.53 1.65 1.40
Slope (%) 20 20 20
Interstitial Velocity
(ft/s) 0.43 0.75 0.69
Filter Requirement No Recommended Recommended
Based on the results in Table G.4 and the fine-grained nature of the top soil, it is recommended that a filter be placed between the soil and the rock protection for the side slope areas that require
angular riprap. These areas include the southern side slopes of Cells 4A and 4B as well as the northern side slope of the Cell 1 disposal area as shown in Figure G.1. A narrow zone of this
filter will also be placed at the interface between the riprap on the external side slopes and the
cover surface erosion protection layer. The interstitial velocity results confirm that a filter is not necessary for the non-accumulating side slopes where rounded rock is proposed on the west and
east sides of Cells 2, 3 and 4.
Gradation for proposed Filter. The procedure from USDA (1994) for determining the gradation
limits for a sand or gravel filter was used to evaluate the type of material needed to satisfy filter
requirements between the soil and rock protection for the side slopes. The method details twelve steps to determine an appropriate gradation range for the filter layer. The steps can be found in
Chapter 26 of the USDA Handbook and are shown in the Attachment G.2 for supporting calculations. In addition, Equation 5.3 from Cedegren (1989) and Equation 4.36 from Nelson et al. (1986) were used to determine the filter gradation requirements. Table G.5 presents the
recommended gradation. Table G.5. Results of Filter Gradation Requirements
Diameter (mm) Sieve Sizes Percent Passing
76.2 3" 100
4.75 No. 4 70-100
0.85 No. 20 40-60
0.075 No. 200 0-5
Based on the results of Table G.5, the filter material should be a medium sand that will be placed
between the erosion protection and the base layer on the side slopes.
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Sheet Erosion. The Modified Universal Soil Loss Equation (MUSLE) as presented in NUREG/CR4620 (Nelson et al., 1986) was used to evaluate the potential for soil loss due to sheet
flows across the gravel/topsoil surface layer of the cover.
The MUSLE is defined as: 𝐴𝐴=𝑅𝑅∗𝐾𝐾∗𝐿𝐿𝛾𝛾∗𝑉𝑉𝑉𝑉
Where: A = soil loss, in tons per acre per year,
R = rainfall factor,
K = soil erodibility factor, LS = topographic factor, and
VM = dimensionless erosion factor relating to vegetative and mechanical factors
The rainfall factor, R, is 30, as given in NUREG/CR-4620 for the eastern third of Utah. The soil
erodibility factor, K, was estimated to be 0.28 for the topsoil and 0.16 for the gravel and topsoil
mixture, based on the nomograph (Fig. 5.1) in NUREG/CR-4620.
The topographic factor, LS, is calculated based on the following equation: 𝐿𝐿𝛾𝛾=650 +450𝑠𝑠+65𝑠𝑠210,000 +𝑠𝑠2 ∗ �𝐿𝐿72.6�𝑚𝑚

Where:
s = slope steepness, in percent (%),
L = slope length in feet, m = slope steepness dependent exponent
The topographic factor was calculated using a slope of 0.82 percent and a slope length of 1,300 feet. From the Table 5.2 in NUREG/CR-4620, the slope steepness exponent, m, is 0.2 for slopes less than or equal to 1.0 percent.
The erosion factor, VM, used was 0.4, from Table 5.3 of NUREG/CR-4620, to represent seedlings of 0 to 60 days, to mimic light vegetation on the cover. Table G.5 summarizes the MUSLE results
for the proposed topsoil and the proposed topsoil mixed with 25 percent gravel, by weight.
Table G.6. Results of MUSLE
Soil Cover Proposed Topsoil Proposed Topsoil with 25% Gravel
Rainfall factor, R 30 30
Silt and very fine sand (%) 43.6 32.7
Sand (%) 39.2 29.4
Organic matter (%) 1.5 1.5
Soil structure Fine granular Medium or coarse granular
Relative permeability Moderate Moderate to rapid
Erodibility factor, K 0.28 0.12
Topographic Factor, LS 0.16 0.19
Erosion factor, VM – low density seedings 0.4 0.4
Soil loss (tons/acre/year) 0.54 0.27
Soil loss (inches/1,000 years) 3.0 1.4

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The soil loss equation shows the potential for erosion will be reduced by almost one half, by using 25 percent gravel in the topsoil mixture. The topsoil loss of 1.5 to 3.0 inches over the life of the
cover (1,000 years) is less than the minimum design thickness of 6 inches.
G.7 ROCK SIZING FOR APRON
Additional erosion protection will be provided for runoff from the south side slopes of the reclaimed surfaces of Cells 4A and 4B, the east side of Cell 4A, and the north side of Cell 1 with a rock apron. The perimeter apron will: (1) serve as an impact basin and provide for energy dissipation
of runoff, (2) provide erosion protection, and (3) transition flow from side slopes to natural ground. The median rock size required in the perimeter apron was calculated using the equations derived by Abt et al. (1998) as outlined in NUREG 1623 (Johnson, 2002) as follows:
𝐷𝐷50 𝑒𝑒𝑑𝑑𝑒𝑒𝑒𝑒𝑑𝑑𝑒𝑒 𝑑𝑑𝑑𝑑𝑠𝑠𝑠𝑠𝑑𝑑𝑑𝑑𝑎𝑎𝑑𝑑𝑑𝑑𝑑𝑑𝑑𝑑=10.46𝛾𝛾0.43𝑞𝑞0.56

Flow Characteristics. The peak unit discharge values from Table G.1 were used to represent flow conditions down the embankment side slopes south of Cells 4A and 4B. Concentration
factors of 3 were used to account for channelization of flow.
Rock Characteristics. A specific gravity of 2.65 was assumed for the riprap. Both rounded and
angular rock was used in the apron design.
Based on the above equation, the rock apron (Apron A) along the toe of the non-accumulating
slopes covered with rounded riprap (west and east side slopes of Cells 2 and 3) should be constructed using rounded rock with a median rock diameter of 3.4 inches. The width of the apron should be a minimum of 15 times the median rock size (4.25 ft) and the apron thickness should
be a minimum of three times the median rock size (10.2 inches). Rock Apron B should be placed
on the toes of the south slope of Cells 4A and 4B and along the east of Cell 4A. Apron B should have a median angular rock size of 10.6 inches, with a minimum width of 13.2 feet and a minimum
thickness of 2.7 feet. Rock Apron C should be placed on the toes of the remaining slope (Cell 1 disposal area side slope). Apron C should have a median rock size of 9.0 inches, a minimum width of 11.3 feet, and a minimum thickness of 2.3 feet.
Filter Requirements. NUREG-1623 (Johnson, 2002), as detailed in section G.6, was used to
determine if a bedding layer was required for the rock aprons. The results are presented in Table
G.7 below.
Table G.7. Results of Filter Requirements for Rock Aprons
Location
Apron A: Non-Accumulating Slopes (Rounded) Apron B: Cell 4A and 4B slopes(Angular)
Apron C: Cell 1 disposal area side slope (Angular)
Minimum D50
(inches) 3.4 10.6 9.0
Maximum D10 (inches) 1.0 3.3 2.8
Slope (%) 1 1 1
Interstitial Velocity (ft/s) 0.13 0.24 0.22
Filter Requirement No No No

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Based on the results in Table G.7, it is not required to place a bedding layer between the soil and rock protection for the rock aprons.
G.8 DISCHARGE CHANNEL AND SEDIMENTATION BASIN
The PMP event described in Section G.3 was used to determine the peak discharge to the
channel to be located at the west end of the sedimentation basin. The peak discharge calculations were made using the Rational Method and the time of concentration was calculated for the longest flow path (see Figure G.1) across the mill site and sedimentation basin using the procedures
described in section G.4. A runoff coefficient of 1.0 was used to represent PMP conditions (DOE, 1989). These characteristics represent high runoff quantities and peak flow velocities.
The PMP peak discharge calculated across the mill site and sedimentation basin is presented in Table G.8. This discharge represents the peak flow into the channel. Further details of the
calculations can be found in Attachment G.1
Table G.8. Peak Discharge Flow to the Discharge Channel

Location Slope Length (feet)
Time of Concentration (min)
Rainfall Intensity (in/hr)
Runoff Coefficient
Peak Discharge (cfs)
Mill site and
sedimentation basin 4,600 26.3 16.4 1.0 2,440

The peak discharge value in Table G.8 above, was used to evaluate the peak flow velocities through the discharge channel excavated into bedrock. The channel dimensions are shown on
Drawing REC-3 and include a 150-foot bottom width and 3:1 (H:V) side slopes. The Manning’s
n-value was estimated and adjusted based on the anticipated type of bedrock and the presumed roughness, along the channel, after excavation. Table G.9 includes peak flow velocities for
Manning’s n-values of 0.02 and 0.03. Table G.9. Peak Discharge Channel Flow Velocities

Location
Channel
Bottom Width (feet)
Channel
Side Slopes (H:V)
Manning Coefficient,
n
Flow Depth
(ft)
Cross
Sectional Area of Flow (ft2)
Hydraulic Radius
(ft)
Peak Velocity
(fps)
Discharge channel 150 3:1 0.02 1.67 259 1.61 9.4
Discharge
channel 150 3:1 0.03 2.12 332 2.03 7.3
Based on the available bedrock information near the channel location, the rock is expected to
consist of a fine to medium-grained sandstone with varying degrees of cementation and
weathering, or a claystone (Dames and Moore, 1978). The shear wave velocities from seismic refraction surveys indicate the bedrock will range from rippable to hard rock, requiring blasting
(D’Appolonia, 1979). Because of this variability, an initial Manning’s n-value of 0.015 was
selected, for a channel in rock and then modifications of 0.005 and 0.015 were added for increasing irregularities in the final excavated rock surface. (USBR, 1987). Maximum suggested
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permissible peak channel velocities are 10 feet per second for channels excavated in “poor rock” (USACE, 1994).
G.9 REFERENCES
Abt, S., J. Ruff, and R. Wittler, 1991. Estimating Flow Through Riprap, Journal of Hydraulic
Engineering, Vol. 117, No. 5, May. Abt, S., and T. Johnson, 1991. Riprap Design for Overtopping Flow, Journal of Hydraulic
Engineering, Vol. 117, No. 8, August. Abt, S., T. Johnson, C. Thornton, and S. Trabant, 1998. Riprap Sizing at Toe of Embankment
Slopes, Journal of Hydraulic Engineering, Vol. 124, No. 7, July.
Cedegren, H.R., 1989. Seepage, Drainage, and Flow Nets. Equation 5.3. 3rd Edition. John
Wiley & Sons, Inc., New York.
Dames and Moore, 1978. Site Selection and Design Study - Tailing Retention and Mill Facilities
White Mesa Uranium Project. January 17.
D’Appalonia, 1979. Tailings Management System, White Mesa Uranium Project, Blanding Utah.
June.
Denison Mines (USA) Corporation (Denison), 2009. “Re: Cell 4B Lining System Design Report, Response to DRC Request for Additional Information – Round 3 Interrogatory, Cell 4B Design – Exhibit C: Probable Maximum Precipitation (PMP) Event Calculation”, Letter to
Dane Finerfrock, September 11. Denison Mines (USA) Corporation (Denison), 2012. Responses to Interrogatories – Round 1 for
Reclamation Plan, Revision 5.0, March 2012; Attachment B: Updated Probable Maximum Precipitation (PMP) Calculation. May 31.

Energy Fuels Resources (USA), Inc. (EFRI), 2012. Responses to Interrogatories – Round 1 for Reclamation Plan, Revision 5.0, March 2012. August 15.

Hansen, E. M., F.K. Schwarz, J.T. Riedel, 1984. “Hydrometeorological Report No. 49: Probable Maximum Precipitation Estimates, Colorado River and Great Basin Drainages,”
Hydrometeorological Branch Office of Hydrology, National Weather Service, U.S.
Department of Commerce, National Oceanic and Atmosphere Administration, U.S. Department of the Army, Corps of Engineers, Silver Springs, MD.
Jensen, D. 1995. Final Report: Probable Maximum Precipitation Estimates for Short Duration, Small Area Storms in Utah, October.
Johnson, T.L., 2002. "Design of Erosion Protection for Long-Term Stabilization." U.S. Nuclear Regulatory Commission (NRC), NUREG-1623. September.
MWH Americas, Inc. (MWH), 2011. Updated Tailings Cover Design. Prepared for Denison Mines
(USA) Corp. September.

Updated Tailings Cover Design Report
Energy Fuels Resources (USA) Inc. MWH Americas, Inc.
G-12 December 2016
Nelson, J., S. Abt, R. Volpe, D. van Zyl, N. Hinkle, and W. Staub, 1986. "Methodologies for Evaluation of Long-term Stabilization Designs of Uranium Mill Tailings Impoundments."
NUREG/CR-4620, U.S. Nuclear Regulatory Commission, June.
Temple, D.M., K.M. Robinson, R.A. Ahring, and A.G. Davis, 1987. "Stability Design of Grass-
Lined Open Channels." USDA Handbook 667. U.S. Army Corps of Engineers, 1994. Hydraulic Design of Flood Control Channels, EM 1110-2-
1601. p.2-16. June. U.S. Department of Agriculture (USDA), 1994. Gradation Design of Sand and Gravel Filters,
National Engineering Handbook, Part 633, Chapter 26, October.
U.S. Department of Energy (DOE), 1989. Technical Approach Document, Revision II, UMTRA-
DOE/AL 050425.0002, Uranium Mill Tailings Remedial Action Project, Albuquerque, New Mexico.

U.S. Department of the Interior, Bureau of Reclamation (USBR), 1987. Design of Small Dams. 3rd Edition. p.595.

U.S. Nuclear Regulatory Commission (NRC), 1990. "Final Staff Technical Position, Design of Erosion Protective Covers for Stabilization of Uranium Mill Tailings Sites," August.
Utah Department of Environmental Quality, Utah Division of Radiation Control (DRC). 2012. Denison Mines (USA) Corp’s White Mesa Reclamation Plan, Rev. 5.0, Interrogatories -
Round 1. March. Utah Department of Environmental Quality, Division of Radiation Control (DRC), 2013. Review
of August 15, 2012 (and May 31, 2012) Energy Fuels Resources (USA), Inc. Responses to Round 1 Interrogatories on Revision 5 Reclamation Plan Review, White Mesa Mill, Blanding, Utah, report dated September 2011. February 13.
RESTRICTED AREA BOUNDARY
RESTRICTED AREA BOUNDARY
1.0
%
0.
5
%
0.5
%
0.5
%
0.8
%
0.8
%
0.5
%
0.1%
SLOPES: TOPSOIL
AND VEGETATION
CELL 2
CELL 3
CELL 4A
MILL SITE
BLACK MESA RD
HW
Y

1
9
1
CELL 1 DISPOSAL AREA
SEDIMENTATION
BASIN
HIGH POINT
ROCK APRON A: D50 = 3.4
INCHES ROUNDED ROCK
MINIMUM WIDTH = 4.5 FT
MINIMUM DEPTH = 12 INCHES
ROCK APRON B: D50 = 10.6
INCHES ANGULAR ROCK
MINIMUM WIDTH = 13.5 FT
MINIMUM DEPTH = 3 FT
0.5% SLOPES: TOPSOIL
AND VEGETATION
0.8-1.0% SLOPES: TOPSOIL MIXED
WITH 25% 1-INCH MINUS GRAVEL
0.8-1.0% SLOPES: TOPSOIL MIXED
WITH 25% 1-INCH MINUS GRAVEL
FLOW PATH ABOVE LONGEST
5H:1V SIDE SLOPE IN CELL 4A LONGEST FLOW PATH
ACROSS CELLS 2, 3 AND 4A
CELL 4A AND 4B SOUTHERN SLOPES:
D50 = 5.3 INCHES ANGULAR ROCK
WITH FILTER LAYER BETWEEN
EROSION PROTECTION AND SOIL
SLOPES: TOPSOIL
AND VEGETATION
DISCHARGE CHANNEL
LONGEST FLOW PATH ACROSS MILL
SITE AND SEDIMENTATION BASIN
NON-ACCUMULATING
SIDE SLOPES: D50 = 1.7
INCHES ROUNDED ROCK
ROCK APRON C: D50 = 9.0
INCHES ANGULAR ROCK
MINIMUM WIDTH = 11.5 FT
MINIMUM DEPTH = 3 FT CELL 1 DISPOSAL AREA SIDE SLOPE:
D50 = 5.3 INCHES ANGULAR ROCK
WITH FILTER LAYER BETWEEN
EROSION PROTECTION AND SOIL
LONGEST FLOW PATH ACROSS CELL
2 AND CELL 1 DISPOSAL AREA
ROCK APRON A: D50 = 3.4
INCHES ROUNDED ROCK
MINIMUM WIDTH = 4.5 FT
MINIMUM DEPTH = 12 INCHES
NON-ACCUMULATING SIDE SLOPES:
D50 = 1.7 INCHES ROUNDED ROCK
(NO FILTER LAYER REQUIRED)
BEDROCK
GR
A
D
E
BR
E
A
K
LEGEND:
WHITE MESA MILL TAILINGS RECLAMATION
AUG 2015
Energy Resources (USA) Inc.Fuels
5605
RECLAMATION COVER EROSION PROTECTION FIGURE G.1
WMM EROS PRO
5605
APR 2016
Updated Tailings Cover Design Report

ATTACHMENT G.1
PMP CALCULATIONS DENISON (2012) DENISON (2009)

Client: Denison Mines Job No.: 1009740Project: White Mesa Reclamation Plan Date: 5/10/2012
Detail: Updated Probable Maximum Precipitation (PMP) Calculation Computed By: MMD
References: Denison Mines (USA) Corporation (Denison), 2009. Re: Cell 4B Lining System Design Report, Response to DRC Request for Additional
Information – Round 3 Interrogatory, Cell 4B Design – Exhibit C: Probable Maximum Precipitation (PMP) Event Calculation, Letter to
Dane Finerfrock, September 11.
Hansen, E. M., Schwarz, F.K., Riedel, J.T., 1984. Hydrometeorological Report No. 49: Probable Maximum Precipitation Estimates, Colorado River and Great Basin Drainages, Hydrometeorological Branch Office of Hydrology, National Weather Service, U.S. Department
of Commerce, National Oceanic and Atmosphere Administration, U.S. Department of the Army, Corps of Engineers, Silver Springs, MD.
Jensen, D. 1995. Final Report: Probable Maximum Precipitation Estimates for Short Duration, Small Area Storms in Utah, October.
Jensen, D., 2003. 2002 Update for Probable Maximum Precipitation, Utah 72 Hour Estimates to 5,000 sq. mi., March.
Utah Division of Radiation Control (DRC), 2012. Denison Mines (USA) Corp's White Mesa Reclamation Plan, Rev. 5.0, Interrogatories -
Round 1, March.
Approach:
Update previous calculations (Denison, 2009) to incorporate Jensen (1995) and Jensen (2003) references as recommended by DRC (2012)Jensen (2003) is applicable for 72-hour durations for areas up to 5,000 square miles. Incorporation of this reference does not modify
the previous calculations for one-hour or six-hour duration PMP values for the site.
Calculations:Site Information
Parameter Value Units
Drainage Area 0.4 mi2
Latitude N 37ο31'
Longitude W 109o30'
Minimum Elevation 5600 ft
Updated Local-Storm PMP EstimatesParameter Value Units
One-hour point precipitation PMP value 8.6 in
Elevation Reduction 97 %
One-Hour PMP (adjusted for elevation) 8.3 in
6-hr to 1-hr Depth Percentage 115 %
Six-Hour PMP 9.6 inAreal Reduction 100 %
RESULTS
One-Hour Duration PMP 8.3 inSix-Hour Duration PMP 9.6 in
Updated Local-Storm PMP Incremental Values
Duration (hr)
Percentage of
1-hr PMP
Depth
(in)
Incremental
Depth (in)
0.25 50 4.2 4.2
Hourly Increments Depth (in)15-Min. Increments Depth (in)
0.5 74 5.5 1.3 1st 0.1 1st 4.2
0.75 90 7.5 2.0 2nd 0.2 2nd 2.0
1 100 8.3 0.8 3rd 8.3 3rd 1.32 110 9.1 0.8 4th 0.8 4th 0.8
3 112 9.3 0.2 5th 0.1
4 113.5 9.4 0.1 6th 0.1
5 114.5 9.5 0.1
6 115 9.6 0.1
Denison (2009)
Denison (2009)
Denison (2009) for Cells 2 through 4B
Comments
One-Hour Duration PMPSix-Hour Duration PMP
Comments
Jensen (1995) references Figure 4.7 in Hansen (1984).
Denison (2009)
Jensen (1995) recomments same elevation reduction as used in Hansen (1984).
This is the same value presented in Denison (2009)
Table 15 in Jensen (1995)
One-hour PMP multiplied by 6-hr to 1-hr depth percentageTable 15 in Jensen (1995) for 1 sq. mi. area
L:\Denison Mines\6.0 Studies & Reports\6.2 Technical\6.2.1 Calculations\Erosion Protection\Erosion Protection(5-10-12)_mmd.xlsx

EXHIBIT C

PROBABLE MAXIMUM
PRECIPITATION (PMP)
EVENT CALCULATION
PACKAGE

COMPUTATION COVER SHEET
Client: DMC Project: White Mesa Mill -Cell 4B
Geosyntec t>
consultants
Project/
Proposal No.: SC0349
Task No.
TitleofComputations PROBABLE MAXIMUM PRECIPITATION (PMP) EVENT
COMPUTATION
Computations by:
Assumptions and
Procedures Checked
by:
(peer reviewer)
Computations
Checked by:
Computations
backchecked by:
(originator)
Approved by:
(pm or designate)
Approval notes:
Signature
Printed Name
Title
Signature
Printed Nam
Title
Signature
Printed Name
Title
Signature
Printed Name
Title
Signature
Title
Revisions (number and initial all revisions)
No. Sheet Date
PMP Cale 20090904 d calc.doc
Engineer
By
Date
Date
g /4 /if/
DlJe I
Checked by Approval

Page 1 of 5
Written by: M. Lithgow Date: 09/04/09 Reviewed by: G. Corcoran Date: 9/10/09
Client: DMC Project: White Mesa Mill-
Cell 4B
Project/
Proposal No.:
SC0349 Task
No.:
02

PMP Calc 20090910Fcalc.doc
PROBABLE MAXIMUM PRECIPITATION (PMP) EVENT COMPUTATION
WHITE MESA MILL – CELL 4B
BLANDING, UTAH
OBJECTIVE
The purpose of this calculation is to evaluate the local-storm Probable Maximum
Precipitation (PMP) event for the White Mesa Mill Facility site located in Blanding,
Utah. This calculation demonstrates that the probable maximum precipitation (PMP)
event that the site will experience is 10 inches (0.83 ft) in 6 hours.
PMP COMPUTATION PROCEDURE
The Probable Maximum Precipitation (PMP) for the site was evaluated using
“Hydrometeorological Report No. 49: Probable Maximum Precipitation Estimates,
Colorado River and Great Basin Drainages” (Hansen, et. al., 1984). The use of this
method is cited in a hydrology report that was prepared as part of an agreement between
UMETCO and the Nuclear Regulatory Commission (NRC) during the permitting of
Cell 4A (UMETCO, 1990).
PROBABLE MAXIMUM PRECIPITATION EVENT CALCULATIONS
Step 1: Calculate the Average 1-hr 1-mi2 PMP for drainage using Figure 4.5

The average 1-hr 1-mi2 PMP is 8.6-in (Attachment A, 1/7)

Step 2a: Reduce the 1-hr 1-mi2 PMP event for elevation

If the lowest elevation within the drainage is above 5,000 feet (ft) above Mean Seal
Level (MSL), decrease the PMP value from Step 1 by 5% for each 1,000 ft or
proportionate fraction thereof above 5,000 ft to obtain the elevation adjusted drainage
average 1-hr 1-mi2 PMP.

The elevation of Cell 4B is 5,598 ft above MSL, which is conservatively the lowest
elevation for the completed cells 2 through 4B; therefore, it is required to interpolate

Page 2 of 5
Written by: M. Lithgow Date: 09/04/09 Reviewed by: G. Corcoran Date: 9/10/09
Client: DMC Project: White Mesa Mill-
Cell 4B
Project/
Proposal No.:
SC0349 Task
No.:
02

PMP Calc 20090910Fcalc.doc
between 95% and 100% using the following equation:
ft
x
ft 598
%
000,1
%5 =; x = 3% reduction
100 % - 3 % = 97 %

Therefore, reduce the value obtained in Step 1 by 97%.

Step 2b: Multiply the number calculated in Step 1 by the number calculated in Step 2a.

8.6 inches x 0.97 = 8.3 inches

Step 3: Determine the average 6/1-hr ratio for drainage using Figure 4.7

The average 6/1-hr ratio for drainage is approximately 1.2. (Attachment A, 2/7)

Step 4: Calculate the durational variation for 6/1-hr ratio of Step 3 using Table 4.4

The durational value is determined using Table 4.4 is as follows: (Attachment A, 3/7)

Duration (hr)
¼ ½ ¾ 1 2 3 4 5 6
74 89 95 100 110 115 118 119 120 %

Step 5: Multiply step 2b by Step 4 to calculate the 1-mi2 PMP for indicated durations

For example, for the ¼ hour duration: 8.3 x 0.74 = 6.1

The following numbers are calculated as follows:

Duration (hr)
¼ ½ ¾ 1 2 3 4 5 6
6.1 7.4 7.9 8.3 9.1 9.5 9.8 9.9 10.0 in.

Step 6: Determine the areal reduction using Figure 4.9 for the site:

Page 3 of 5
Written by: M. Lithgow Date: 09/04/09 Reviewed by: G. Corcoran Date: 9/10/09
Client: DMC Project: White Mesa Mill-
Cell 4B
Project/
Proposal No.:
SC0349 Task
No.:
02

PMP Calc 20090910Fcalc.doc
First, determine the total watershed contributing to Cell 4B, including Cell 4B. The
watershed areas of the upstream Cells 2, 3, and 4A are 87 acres (ac), 83 ac, and 40 ac,
respectively and the proposed Cell 4B is 42 ac. Areas outside of these cells do not drain
to Cell 4B and are therefore not part of the watershed area.

Total acreage is 87 ac + 83 ac + 42 ac + 42 ac = 254 acres.
Next, convert this number into square miles:

2
2
2 40.0)280,5(
)1(
1
560,43254 2 mift
mixacre
ftxacre =

Using Figure 4.9, the depth ratio of ≤1 mi2 is 100 percent for each of the durations
(Attachment A, 4/7).

Step 7: Multiply the duration values in Step 5 by the areal reduction in Step 6 to
calculate the areal reduced PMP.

This step is neglected because the depth ratio is 100 percent; therefore, the values
obtained in Step 5 are not reduced.

Step 8: Calculate the incremental PMP using successive subtraction of the values in
Step 7 for the hourly durations (1 hr through 6 hr) and 15-minute incremental durations
(1/4 hr through 1 hr).

The incremental PMP is calculated in two separate steps; the incremental PMP is
calculated on the first line for the hourly increments (hours 1 through 6) and then
calculated on the second line for the 15-minute increments during the first hour of the
storm. To determine the incremental PMP, the following formula is used:
ttttotPMPPMPPMP−=++11 , where t = time
In this example, the PMP between the first interval and second interval is determined by
subtracting the PMP for interval 1 from the PMP for the second interval, as calculated
in Step 5. The following equation illustrates the calculation of the incremental PMP
between hours 0 and 1:

Page 4 of 5
Written by: M. Lithgow Date: 09/04/09 Reviewed by: G. Corcoran Date: 9/10/09
Client: DMC Project: White Mesa Mill-
Cell 4B
Project/
Proposal No.:
SC0349 Task
No.:
02

PMP Calc 20090910Fcalc.doc

=−01PMPPMP 8.3 in – 0 in. = 8.3 in.
The next equation illustrates the calculation of the incremental PMP between hours 1
and 2:

=−12PMPPMP 9.1 in – 8.3 in. = 0.8 in.

This calculation is continued until the following table is completed as shown for each
PMP interval.

Duration (hr)
¼ ½ ¾ 1 2 3 4 5 6
8.3 0.8 0.4 0.2 0.1 0.1 in.
6.1 1.2 0.5 0.4 in.

Step 9: Order the incremental PMP in a sequence dictated by hourly and 15-minute
increments using Table 4.7 (Attachment 5/7) and Table 4.8 (Attachment 6/7),
respectively.

The incremental PMP calculated in Step 8 must now be arranged in a specific order to
model the runoff generated by the storm event. This order is dictated by Table 4.7 for
the hourly PMP intervals and Table 4.8 for the 15-minute PMP intervals.

The final arrangement of the numbers determined in Step 8 is as follows:

Hourly increments: 0.1 0.4 8.3 0.8 0.2 0.1 in.
15-minute increments: 6.1 1.2 0.5 0.4 in.

The storm’s 6 hour PMP runoff event is calculated by summing the incremental PMP
for each hour of the storm.
0.1 in. + 0.4 in. + 8.3 in. + 0.8 in. + 0.2 in. + 0.1 in. = 9.9 inches (10 inches).

This step is repeated to calculate the runoff generated during the first hour of the storm.
6.1 in. + 1.3 in. + 0.5 in. + 0.4 in. = 8.3 inches

Page 5 of 5
Written by: M. Lithgow Date: 09/04/09 Reviewed by: G. Corcoran Date: 9/10/09
Client: DMC Project: White Mesa Mill-
Cell 4B
Project/
Proposal No.:
SC0349 Task
No.:
02

PMP Calc 20090910Fcalc.doc

Because 9.9 > 8.3, the runoff generated from the 6 hour storm (9.9 inches) is used.
CONCLUSIONS AND RECOMMENDATIONS
Our calculations are summarized in a worksheet modeled after Table 6.3A in the
Hydrometerological Report No. 49 and is provided as Attachment A, 7/7. Our analysis
determined the Probable Maximum Precipitation (PMP) event generates 10 inches (0.83
ft) over 6 hours.
REFERENCES
UMETCO Minerals Corporation, 1990, “White Mesa Mill Drainage Report for
Submittal to NRC.”

Attachment A
Hansen, E. Marshall, Schwartz, Francis K., Riedel, John T., 1984.
“Hydrometeorological Report No. 49: Probable Maximum Precipitation
Estimates, Colorado River and Great Basin Drainages,” Hydrometeorological
Branch Office of Hydrology National Weather Service, U.S. Department of
Commerce, National Oceanic and Atmosphere Administration, U.S. Department
of Army Corps of Engineers, Silver Springs, Md.

115
_,
~ I
\-~ .g.b in ·te. : ! JS~ j ' i
t! . .1...1...
~AtNFAIL CONVERSION SCALE
' 6 8 10 12 UN ~ I I o I
<31 \: ~ -3~·
\
\
3 \ IU
HO" DISTANCE SC:Al.E t 1yo 200
I' .
3001 I
IK
,-Fif!Ul'e 4. li--Local.-storm PMP for 1 mi2 (2. 6 km2) 1 hr>. Directl.y
appl.icabl.e for l.ocations bettueen sea l.evei and 5000 ft (1524 m).
El.ev<rtion adjustment must be appl.ied for l.ocations above 5000 ft.
events. In contrast to figure. 4.4, figure 4.5 maintains a maximum between
these two locations. There is no known meteorological basis for a different
solution. The analysis suggests that in the northern portion of the region
maximum PMP occurs between the Sierra Nevada on the west and the Wasatch
range on the east.
A discrete maximum (> 10 inches, 254 mm) occurs at the north end of the
Sacramento Valley in northern.California because the northward-flowing moist
air is increasingly channeled and forced upslope.· Support for this PMP cen-
ter comes from the ~ewton, Kennett, and Red Bluff storms (fig. 4.1). Although
the analysis in this region appears to be an extension of the broad maximum
through the center of the Southwestern Region, it does not indicate the
direction of moist inflow. The pattern has evolved primarily as a result of
attempts to tie plotted maxima into a reasonable picture while considering
inflow directions, terrain effects, and moisture potential.
A tt acvm,,ent A , 1 / 1
118
33°
l I
l?O
I
2Eo
I
100 200 300
31°
123° 121° 119°
' a:ill
* 1.32
I
400
117° 115° 113°
1.25
i\ II
0 1090 1 7
1 l lc::JAVERAGE OF <3 STATIONS
• NO DATA
Figure 4.?.--Analysis of 6/1-hr ratios of averaged maximum station
data (plotted at midpoints of a 2° latitude-longitude grid).
establish the basic depth-duration curve, then structure a variable set of
depth-duration curves to cover the range of 6/1-hr ratios that are needed.
Three sets of data were considered for obtaining a base relation (see
table 4.3 for depth-duration data).
a. An average of depth-duration relations from .each of 17 greatest 3-hr
rains from summer storms (1940-49) in Utah (U. S. Weather Bureau 195lb) and
in unpublished tabulations for Nevada and Arizona (1940-63). The 3-hr
amounts ranged from 1 to 3 inches (25 to 76 mm) in these events.
b. An average depth-duration relation from 14 of the most extreme short-
duration storms listed in Storm Rainfall (U. S. Army, Corps of Engineers
1945-). These storms come from Eastern and Central States and have 3-hr
amounts of 5 to 22 inches (127.to 559 nun).
*
120
ratios than storms with high 3/1-hr ratios. The geographical distribution
of 15-min to 1-hr ratios also were inversely correlated with magnitudes of
the 6/1-hr ratios of figure 4.7. For example, Los Angeles and San Diego
(high 6/1-hr ratios) have low 15-min to 1-hr ratios (approximately 0.60)
whereas the 15-min to 1-hr ratios in Arizona and Utah (low 6/1-hr ratios)
were generally higher (approximately 0.75).
Depth-duration relations for durations less than 1 hour were then smoothed
to provide a family of curves consistent with the relations determined for 1
to 6 hours, as shown in figure 4.3. Adjustment was necessary to some of the
curves to provide smoother relations through the common point at 1 hour.
We believe we were justified in reducing the number of the curves shown in
figure 4.3 for durations less than 1 hour, letting one curve apply to a
range of 6/1-hr ratios. The corresponding curves have been indicated by
letter designators, A-D, on figure 4.3. As a~ example, for any 6-hr amount
between 115% and 135% of 1-hr, l-mi2 (2.6-km2) PMP, the associated values
for durations less than 1 hour are obtained from the curve designated as "B".
Table 4.4 lists durational variations in percent of 1-hr PMP for selected
6/1-hr rain ratios. These values were interpolated from figure 4.3.
To determine 6-hr PMP for a basin, use figure 4.3 (or table 4.4) and the
geographical distribution of 6/1-hr ratios given in figure 4.7.
Table 4.4.--Durational variation of l-mi2 (2.6-km2) local-storm PMP
in percent of 1-hr PMP (see figure 4.3)
6/1-hr Duration (hr)
ratio 1/4 1/2 3/4 1 2 3 4 5 6
1.1 86 93 97 100 107 109 110 110 110
1.2 74 89 95 100 110 115 118 119 120
1. 3 74 89 95 100 114 121 125 128 130
1.4 63 83 93 100 118 126 132 137 140
1.5 63 83 93 100 121 132 140 145 150
1.6 43 70 87 100 124 138 147 154 160
1.8 43 70 87 100 130 149 161 171 180
2.0 43 70 87 100 137 161 175 188 200
4.5 Depth-Area Relation
We have thus far developed local-storm PMP for an area of 1 mi2 (2.6 km2).
To apply PMP to a basin, we need to determine how l-mi2 (2.6-km2) PMP should
decrease with increasing area. We have adopted depth-area relations based
on.rainfalls in the Southwest and from consideration of a model thunderstorm.
A. ~
A.
"' 80 ~
:lot:
'° ('I
('I
~ 60
u.
0
..... z
w .40 u a: w
A.
:c ...
A.
w 20 0
DURA Tl4N IHRSI
1/A
(I.. ..
.~t ' ,
'"' IMl 21
0 ~1..,.--.._.,.2........._-.-1,-,-+--~s__._..i....L..L.1~0..,._---..-.....2~0 .................. ,......._sJo~_.__, ......... 1~0~0.--.....+-2~0~0-.-........ -1-s-o~o_._........,. .......... -.-~~
10 100
AREA
1000
Figure 4.9~--Adopted depth-aPea relations for local-storm PMP.
I-' N w
126
Figure 4.10.--Idealized
looal-stoT'lT/ isohyetal
pattern.
I'" \I
I rt1 ,v,
ISOKYET
A
c
0
F
G
H
INCLOSED
AREA
!SQ.MIJ IKM2l
2.6
5 13
25
55
95 2.C6
150 388
220 570
300 777
385 997
soo 1295
DISTANCE SCALf
2 • ~ B U"LI I I I I l ~ ~ I~ 1~ !KIAi
1'500.000
storm period. The sequence of hourly incremental PMP for the Southwest 6-hr
thunderstorm in accord with this study is presented in column 2 of table
4.7. A small variation from this sequence is given in Engineering Manual
1110-2-1411 (U. S. Army, Corps of Engineers 1965). The latter, listed in
column 3 of table 4.7, places greater incremental amounts somewhat more
toward the end of the 6-hr storm period. In application, the choice of
either of these distributions is left to the user since one may prove to
be more critical in a specific case than the other.
Table 4.7.--Time sequence for hourly incremental PMP in 6-hr storm
Increment
Largest hourly amount
2nd largest
3rd largest
4th largest
5th largest
least
1u. S. Weather Bureau 1947.
-/tr ID1R. No. 51 --------EMlll0-2-14112
g-, ".:>
o.<G
o.c;
o.2
o.2
0 ' \
Sequence Position
Third
Fourth
Second
Fifth
First.
Last
Fourth
Third
Fifth
Second
Last
First
2u. S. Corps of Engineers 1952.
-k
Also of importance is the sequence of the four 15-min incremental PMP
values. We recommend a time distribution, table 4.8, giving the greatest
intensity in the first 15-min interval (U.S. Weather Bureau 1947). This
127
is based on data from a broad geographical region. Additional support for
this time distribution is found in the reports of specific storms by Keppell
(1963) and Osborn and Renard (1969).
Table 4.8.--Time sequence for 15-min incremental PMP within 1 hr.
Increment
Largest 15-min amount
2nd largest
3rd largest
least
Sequence Position
First
Second
Third
Last
4.8 Seasonal Distribution
The time of the year when local-storm PMP is most likely is of interest.
Guidance was obtained from analysis of the distribution of maximum 1-hr
thunderstorm events through the warm season at the recording stations in
Utah, Arizona, and in southern California (south of 37°N and east of the
Sierra Nevada ridgeline). The period of record used was for 1940-72 with an
average record length for the stations considered of 27 years. The month
with the one greatest thunderstorm rainfall for the period of record at each
station was noted. The totals of these events for each month, by States,
are shown in table 4.9.
Table 4.9.--Seasonal distribution of thunderstorm rainfalls.
(The maximum event at each of 108 stations, period of record 1940-72.)
Month
M J J A s 0 No. of Cases
Utah l 5 9 14 5 34
Arizona 4 16 19 4 43
s. Calif.* 14 10 7 31
No. of cases/mo. 1 23 35 40 9 0
*South of 37°N and east of Sierra Nevada ridgeline.
Area mi2
Latitude: N 37° 31'Longitude: W 109° 30' Min. Elevation 5598 ft
1 Average 1-hr 1-mi2 (2.6-km2) PMP for
drainage [fig. 4.5]8.6 in.
2a.
Reduction for Elevation. [No adjustment for
elevations up to 5,000 feet: 5% decrease per
1,000 feet above 5,000 feet.0.97 %
b.Multiply step 1 by step 2a.8.3 in.
3.Average 6/1-hr ratio for drainage [fig 4.7]1.2
1/41/23/4123456
4 Durational variation for 6/1-hr ratio of step 3
[table 4.4]74 89 95 100 110 115 118 119 120 %
5 1-mi2 (2.6 km2) PMP for indicated durations
[step 2b x step 4]6.1 7.4 7.9 8.3 9.1 9.5 9.8 9.9 10.0
6 Areal reduction [fig. 4.9]100 100 100 100 100 100 100 100 100 %
7 Areal reduced PMP [steps 5 x 6 ]6.1 7.4 7.9 8.3 9.1 9.5 9.8 9.9 10.0 in.
8 Incremental PMP [successive subtraction in
step 7]8.3 0.8 0.4 0.2 0.1 0.1 in.
6.1 1.2 0.5 0.4 } 15-min. increments
9 Time sequence of incremental PMP to:
Hourly increments [table 4.7]0.1 0.4 8.3 0.8 0.2 0.1 in.
9.9 in.
Four largest 15-min increments [table 4.8]6.1 1.2 0.5 0.4 in
Total depth of 1st hour of storm 8.3 in.
Duration (hr)
Table 6.3A -- Local-storm PMP computation, Colorado River, Great Basin and California drainages. For drainage average depth PMP.
Total depth of 6 hour storm
0.39Drainage: White Mesa Mill Facility, Cells 2 - 4B
PMP Calculation.xlsx Attachment A, 7/7
Updated Tailings Cover Design Report

ATTACHMENT G.2
SUPPORTING CALCULATIONS
Client: Energy Fuels Resources (USA) Inc. Job No.: 1009740
Project: White Mesa Reclamation Plan Date: 5/31/2011
Detail: Erosion Protection Computed By: RTS
PMP Event
PMP calculation from "Re: Cell 4B Lining System Design Report, Response to DRC Request fo Additional
Information - Round 3 Interrogatory, Cell 4B design", September 11,2009.
Procedure: Hydrometeorological Report No. 49: Probable Maximum Precipitation Estimates, Colorado river and Great Basin Drainages
(Hansen et al., 1984), corrected for elevation and area.
Table 1. Estimated Precipitation Depths For Local-Storm PMP, White Mesa Mill, Utah Site
Hourly Increments
First
Hour Second Hour
Fourth
Hour
Fifth
Hour
Sixth
Hour
PMP Depths (inches)
0.1 0.2 0.8 0.1 0.1
Third-Hour
Component Depths
(inches)4.2 2.0 1.3 0.8
Third Hour
8.3
0
1
2
3
4
5
6
7
8
9
0 102030405060
Pr
e
c
i
p
i
t
a
t
i
o
n
 (i
n
c
h
e
s
)
Duration (min)
Depth‐Duration 
Erosion Protection_25Aug2015:PMP
Attachment G.2
Client: Energy Fuels Resources (USA) Inc. Job No.: 1009740
Project: White Mesa Reclamation Plan Date: 8/22/2015
Detail: Erosion Protection Computed By: TMS/MMD
Time of Concentration
1-hour PMP (in) 8.3
Flow Path 1: flow path across longest 5H:1V side slope in Cell 4A
Kirpich SCS
Brant and
Oberman Average
Cell 2 at 0.5% 0.005 570 7.9 8.0 11.8 9.2 61.3 5.08 33.0
Cell 3 top 0.005 870 18.9 19.0 25.4 21.1 82.3 6.83 19.4
Cell 4A top 0.008 1200 30.7 30.7 38.4 33.3 91.2 7.57 13.7
Cell 4A side slope 0.2 230 31.7 31.7 41.0 34.8 92.0 7.6 13.2
Note: Flow accumulates as it flows from Cell 2 to Cell 4A. Design flow path is longest path across maximum 5H:1V side slope
Flow Path 2: longest flow path across cells across cells 2, 3, 4A and 4B
Kirpich SCS
Brant and
Oberman Average
Cell 2 at 1% 0.01 900 8.6 8.7 10.9 9.4 61.8 5.13 32.7
Cell 2 at 0.5% 0.005 550 16.4 16.4 22.6 18.5 79.3 6.58 21.4
Cell 3 top 0.005 830 27.0 27.0 36.0 30.0 89.4 7.42 14.8
Cell 4A top 0.008 1200 38.7 38.8 49.0 42.2 95.0 7.88 11.2
Cell 4A side slope 0.2 100 39.2 39.3 50.9 43.2 95.3 7.9 11.0
Note: Flow accumulates as it flows from Cell 2 to Cell 4A. Design flow path is longest path across Cell 2, 3, and 4A,
and not the longest flow path across each individual cell
Cell 2 and Side slopes that only drain area of slope
Kirpich SCS
Brant and
Oberman AverageCell 2 Top 1%
Slope 0.01 830 8.1 8.1 10.6 9.0 60.4 5.0 33.6
Cell 2 Northern
.5% Slope 0.005 250 12.3 12.3 19.6 14.8 73.8 6.1 24.9
Cell 1 Disposal
1% Slope 0.01 230 15.4 15.4 26.6 19.1 80.1 6.6 20.9
Cell 1 Northern Side Slope 0.2 90 15.8 15.8 28.4 20.0 81.1 6.7 20.2
Non-Accumulating Side Slopes 0.2 50 0.3 0.3 1.5 2.5 27.5 2.3 54.8
Note: These are the slopes on the sides of Cells 4A, 4B, 3, and 2
Flow Path 3: Flow Path Across Cell 1
Kirpich SCS
Brant and
Oberman Average
Cell 1 at .1%0.001 2232 42.2 42.3 31.9 38.8 93.7 7.8 12.0
Source: Brant and Oberman(1975) as presented in UMTRA TAD (1989)
Formula: tc=C(L/Si^2)^(1/3).
Source:Kirpich (1940) as presented in NUREG 4620Formula: tc=0.00013*L^0.77/S^0.385 with L in feet, tc in hours
Source: SCS as presented in NUREG 4620
Formula: tc=(11.9L^3/H)^0.385 with L in miles, H in feet, t in hours
% of one-hour PMP=RD/(0.0089*RD+0.0686) for tc<15 min based on Table 4.1 of TAD
Cell geometry based on Figure G.1
PDPMP (in)
PDPMP (in)
Slope
(feet/feet)
Intensity
(in/hr)
Intensity
(in/hr)
Description
Slope
Length
(feet)
Time of Concentration (minutes)% of 1-hour
PMP
Description
Slope
(feet/feet)
Slope
Length
(feet)
Time of Concentration (minutes)% of 1-hour
PMP
PDPMP (in)
Intensity
(in/hr)
Description
Slope
(feet/feet)
Slope
Length
(feet)
Time of Concentration (minutes)% of 1-hour
PMP PDPMP (in)
Intensity
(in/hr)
Description
Slope
(feet/feet)
Slope
Length
(feet)
Time of Concentration (minutes)
% of 1-hour
PMP
Erosion Protection_25Aug2015:Time of concentration
Attachment G.2
Client: Energy Fuels Resources (USA) Inc.Job No.: 1009740
Project: White Mesa Reclamation Plan Date: 8/22/2015
Detail: Erosion Protection Computed By: TMS/MMD
Unit discharge of PMP
Flow Path 1: flow path across longest 5H:1V side slope in Cell 4A
Cell 2 at 0.5% 570 1 9.2 33.0 0.43
Cell 3 top 1440 1 21.1 19.4 0.64
Cell 4A top 2640 1 33.3 13.7 0.83
Cell 4A side
slope
2870
1 34.8 13.2 0.87
Note: Flow accumulates as it flows from Cell 2 to Cell 4A
Flow Path 2: longest flow path across cells with 0.8% top slope across cells 4A and 4B
Cell 2 at 1% 900 1 9.4 32.7 0.68
Cell 2 at 0.5% 1450 1 18.5 21.4 0.71
Cell 3 top 2280 1 30.0 14.8 0.78
Cell 4A top 3480 1 42.2 11.2 0.90
Cell 4A side
slope
3580 1 42.2 11.2 0.92
Note: Flow accumulates as it flows from Cell 2 to Cell 4A
Side Slope Flow Paths
Cell 2 Northern
1% Slope
830
1 9.0 33.6 0.64
Cell 2 Northern
.5% Slope
1080
1 14.8 24.9 0.62
Cell 1 Disposal
1% Slope
1310
1 19.1 20.9 0.63
Cell 1 Disposal
Side Slope
1400
1 20.0 20.2 0.65
Non-
Accumulating
Side Slopes
50
1 2.5 54.8 0.06
Cell 1 at .1%2232 1 38.8 12.0 0.62
unit
discharge
(cfs/ft)
Description
Total Drainage
Length (ft) C Tc (min)
Intensity
(in/hr)
unit
discharge
(cfs/ft)
Description
Total Drainage
Length (ft) C Tc (min)
Intensity
(in/hr)
unit
discharge Description
Total Drainage
Length (ft) C Tc (min)
Intensity
(in/hr)
Erosion Protection_25Aug2015:Flow-PMP
Attachment G.2
Client: Energy Fuels Resources (USA) Inc.Job No.: 1009740Project: White Mesa Reclamation Plan Date: 8/22/2015Detail: Erosion Protection Computed By: TMS/MMD
Temple Method for Vegetated Slopes - Top Soil
Reference: Temple, D.M., Robinson, K.M., Ahring, R.M., and Davis, A.G., 1987. Stability Design of Grass-Lined Open Channels, USDA Handbook 667.And as presented in UMTRA TAD Section 4.3.3 and NUREG 1623, Appendix A
Area Cell 2 at 0.5% Cell 3 top
PMP Design flow (cfs/ft) 0.71 0.78
Concentration Factor, F 3 3
PMP Design flow (cfs/ft), q 2.14 2.33
Slope, S (ft/ft) 0.005 0.005
average dry density (pcf) 100 100 (estimated from laboratory testing)
average specific gravity 2.61 2.61 (estimated from laboratory testing)
void ratio, e 0.629 0.629unit weight water (pcf)62.4 62.4
Topsoil Description topsoil topsoil
Plasticity Index, PI <10 <10 (from laboratory testing)
base allowable tractive shear stress (psf) ab=na na
void ratio correction factor, Ce= na na
allowable tractive shear stress (psf), a=0.020 0.020
Long-term, PMP precipRepr. stem length (ft) h(ave)good veg 2 2 pg 36 and 39 of Temple et al. (1987)poor veg 1 1Repr. stem density (stems/sq ft), M(ave)good veg 200 200 Temple Table 3.1, grass mixturepoor veg 67 67Retardance curve index, Ci
good veg 7.62 7.62
poor veg 5.03 5.03
Cover factor, Cf
good veg 0.75 0.75 Temple Table 3.1, grass mixture
poor veg 0.375 0.375 assume min 30% coverage
allowable vegetated shear strength (psf), va
good veg 5.71 5.71
poor veg 3.78 3.78
Mannings n for soil roughness, ns= 0.0156 0.0156
Mannings n for vegetal conditions, nr
good veg 0.0916 0.0872
poor veg 0.0503 0.0487
Mannings n for vegetated slopes, nv
good veg 0.0916 0.0872
poor veg 0.0503 0.0487
assumed depth of flow, d (ft)good veg 1.452 1.485poor veg 1.013 1.047calculated q (cfs/ft), with veg good veg 2.14 2.33poor veg 2.14 2.33qcalc - qdesign good veg 0.00 0.00poor veg 0.00 0.00
Iterate with d until q calc equals q design
velocity (ft/s), v
good veg 1.47 1.57
poor veg 2.11 2.23
effective shear stress (psf), e
good veg 0.0033 0.0037
poor veg 0.0190 0.0210
effective veg shear stress (psf) ve
good veg 0.4497 0.4597
poor veg 0.2970 0.3056
shear stress ratio, vegetated slope
good veg 12.7 12.4
poor veg 12.7 12.4
shear stress ratio, soil on vegetated slopegood veg 6.1 5.4poor veg 1.1 1.0
Erosion Protection_25Aug2015:Temple d75<.05Attachment G.2
Client: Energy Fuels Resources (USA) Inc.Job No.: 1009740Project: White Mesa Reclamation Plan Date: 8/22/2015Detail: Erosion Protection Computed By: TMS/MMD
Temple Method for Vegetated Slopes - Top Soil Ammended with 25% Gravel
Reference: Temple, D.M., Robinson, K.M., Ahring, R.M., and Davis, A.G., 1987. Stability Design of Grass-Lined Open Channels, USDA Handbook 667.And as presented in UMTRA TAD Section 4.3.3 and NUREG 1623, Appendix A
Area Cell 1 at 1% Cell 2 at 1% Cell 4A top
PMP Design flow (cfs/ft) 0.63 0.68 0.87
Concentration Factor, F 3 3 3
PMP Design flow (cfs/ft), q 1.88 2.03 2.60
Slope, S (ft/ft) 0.01 0.01 0.008
average dry density (pcf) 106 106 106 (estimated from laboratory testing)
average specific gravity 2.62 2.62 2.62 (estimated from laboratory testing)
void ratio, e 0.542 0.542 0.542unit weight water (pcf)61.4 62.4 62.4
Topsoil Description
Topsoil with 25% 1"-
minus gravel
Topsoil with 25% 1"-minus
gravel
Topsoil with 25% 1"-
minus gravel
d75 (inches) 0.2 0.2 0.2
from preliminary
gradation specs
base allowable tractive shear stress (psf) ab=na na na
void ratio correction factor, Ce= na na naallowable tractive shear stress (psf), a=0.080 0.080 0.080
Long-term, PMP precipRepr. stem length (ft) h(ave)good veg 2 2 2 pg 36 and 39 of Temple et al. (1987)poor veg 1 1 1Repr. stem density (stems/sq ft), M(ave)good veg 200 200 200 Temple Table 3.1, grass mixturepoor veg 67 67 67
Retardance curve index, Ci
good veg 7.62 7.62 7.62
poor veg 5.03 5.03 5.03
Cover factor, Cf
good veg 0.75 0.75 0.75 Temple Table 3.1, grass mixture
poor veg 0.375 0.375 0.375 assume min 30% coverage
allowable vegetated shear strength (psf), va
good veg 5.71 5.71 5.71
poor veg 3.78 3.78 3.78
Mannings n for soil roughness, ns= 0.0196 0.0196 0.0196
Mannings n for vegetal conditions, nr
good veg 0.0986 0.0944 0.0821
poor veg 0.0528 0.0513 0.0468
Mannings n for vegetated slopes, nv
good veg 0.0993 0.0952 0.0829
poor veg 0.0541 0.0526 0.0482assumed depth of flow, d (ft)good veg 1.148 1.169 1.338poor veg 0.797 0.819 0.966calculated q (cfs/ft), with veg good veg 1.88 2.03 2.60poor veg 1.88 2.03 2.60qcalc - qdesign good veg 0.00 0.00 0.00poor veg 0.00 0.00 0.00
Iterate with d until q calc equals q design
velocity (ft/s), v
good veg 1.64 1.73 1.95
poor veg 2.36 2.47 2.69
effective shear stress (psf), e
good veg 0.0068 0.0077 0.0093
poor veg 0.0401 0.0442 0.0497
effective veg shear stress (psf) ve
good veg 0.6978 0.7219 0.6587
poor veg 0.4494 0.4672 0.4328
shear stress ratio, vegetated slope
good veg 8.2 7.9 8.7poor veg 8.4 8.1 8.7
shear stress ratio, soil on vegetated slopegood veg 11.7 10.4 8.6poor veg 2.0 1.8 1.6
Erosion Protection_25Aug2015:Temple with gravel addedAttachment G.2
Client: Energy Fuels Resources (USA) Inc. Job No.: 1009740
Project: White Mesa Reclamation Plan Date: 8/22/2015
Detail: Erosion Protection Computed By: TMS/MMD
Abt and Johnson method (Abt and Johnson, 1991) applicable for slopes of 50% or less.
Angular-Shaped rock sizing equation:
For rounded rock, increase size by 40%.
Area
Cell 4A Flow Path 2
Southern Side Slope -
Angular
Non-Accumulating
Side Slopes -
Rounded
Cell 2 Northern Side
Slope - Angular
Side Slope (ft/ft) 0.2 0.2 0.2angle  (rad)0.197 0.197 0.197
PMP unit flow (cfs/ft) 0.87 0.06 0.65
Concentration Factor 3 3 3
Coef. Of Movement 1.35 1.35 1.35
design flow (cfs/ft) 3.51 0.25 2.63
Coef. Of Uniformity NA NA NA
design flow over rock (cfs/ft) 3.51 0.25 2.63
D50 (inches) 5.29 1.70 4.49
Erosion Protection_25Aug2015:CSU-Abt Riprap (for report)
Attachment G.2
Client: Energy Fuels Resources (USA) Inc. Job No.: 1009740
Project: White Mesa Reclamation Plan Date: 8/22/2015
Detail: Erosion Protection Computed By: TMS/MMD
Preliminary Gradations
This spreadsheet calculates preliminary gradations of riprap based on D50
Source: NUREG 4620
Source: USDA, National Engineering Handbook, Part 633, Chapter 26, Gradation Design of Sand and Gravel Filters, October 1994.
Comment
Minimum D50 (in) 4.49
Assuming Angular Rock, Safety Factor Method for Top
Slope, Abt and Johnson (1991) method for side slopes
Rock thickness (in) 8.99
Based on constructability: 1.5 to 2*D50. May consider 12"
as minimum thickness for rock
Maximum D50 (in) 5.99 Based on constructability: Thickness/1.5
Maximum D50 (in) 22.47 Prevent gap-grading: minimum D50*5
Maximum D50 (in) 5.99 Smaller of two above criteria
Maximum D100 (in) 8.99 Based on constructability: 1*Thickness
Maximum D100 (in) 29.96 Based on internal stability?: 5*maximum D50
Maximum D100 (in) 8.99 Smaller of two above criteria
Minimum D100 (in) 6.74 1.5*minimum D50
Minimum D15 (in) 0.56 Based on internal stability: Maximum D100/16
Maximum D15 (in) 2.81 Prevent gap-grading: Minimum D15*5
Minimum D60 (in) 6.29 Prevent gap-grading: D60/D10<=6
Maximum D60 (in) 8.39 Prevent gap-grading: D60/D10<=6
Minimum D10 (in) 1.05 Prevent gap-grading: D60/D10<=6
Maximum D10 (in) 1.40 Prevent gap-grading: D60/D10<=6
Area
Description
Cell 4A
side slope
Erosion Protection_25Aug2015:gradations
Attachment G.2
Client: Energy Fuels Resources (USA) Inc. Job No.: 1009740
Project: White Mesa Reclamation Plan Date: 8/22/2015
Detail: Erosion Protection Computed By: TMS/MMD
Interstitial Velocities
Source: NUREG 1623, Section D
Abt, SR, JF Ruff, RJ Wittler (1991). Estimating Flow Through Riprap, Journal of Hydraulic Engineering, Vol. 117, No. 5, May.
Description
Non-
Accumulating
Side Slopes -
Rounded
Cell 1
Disposal
Area Side
Slope -
Angular
Cell 4A Flow
Path 2
Southern Side
Slope - Angular
Minimum D50 (inches) 1.70 4.49 5.29 from Safety Factor Method, or Abt/Johnson Method, assuming rounded rock
Minimum D10 (inches) 0.40 1.05 1.23 from preliminary gradation specs
Maximum D10 (inches) 0.53 1.40 1.65 from preliminary gradation specs
Slope (ft/ft) 0.2 0.20 0.20 from preliminary design
Min Velocity (ft/s) 0.37 0.60 0.65 calculated from Abt et al. (1991) based on Min D10
Max Velocity (ft/s) 0.43 0.69 0.75 calculated from Abt et al. (1991) based on Max D10Underlying filter
required?No Recommended Recommended Per NUREG 1623, Appendix D, section 2.1.1
Erosion Protection_25Aug2015:Interstitial Velocity Angular
Attachment G.2
Client: Energy Fuels Resources (USA) Inc.Job No.: 1009740Project: White Mesa Reclamation Plan Date: 7/9/2012Detail: Erosion Protection Computed By: TMS
USDA Filter Gradation Calulations - 2010 Material Testing
Step 1: Plot Gradation Curve of Base Soil
Stockpile ID
Description
Sieve Sizes Diameter (mm)% Finer Diameter (mm)% Finer Diameter (mm) % Finer
Diameter (mm)% Finer Diameter (mm)% Finer Diameter (mm)% Finer Diameter (mm)% Finer Diameter (mm)% Finer Diameter (mm)% Finer
1 1/2" 38.1 100 38.1 100 38.1 100 38.1 100 38.1 100 38.1 100 38.1 100 38.1 100 38.1 1001" 25.4 100 25.4 100 25.4 100 25.4 100 25.4 100 25.4 100 25.4 100 25.4 100 25.4 100
3/4" 19.1 100 19.1 100 19.1 100 19.1 100 19.1 100 19.1 100 19.1 100 19.1 100 19.1 1003/8" 9.8 100 9.8 100 9.8 100 9.8 100 9.8 100 9.8 100 9.8 100 9.8 100 9.8 100Nº 4 4.75 99.9 4.75 100 4.75 99.9 4.75 100 4.75 100 4.75 100 4.75 100 4.75 100 4.75 99.8Nº 10 2 99.8 2 99.9 2 99.9 2 100 2 100 2 100 2 99.3 2 100 2 99.7Nº 20 0.85 98.9 0.85 99.2 0.85 99.2 0.85 100 0.85 99 0.85 99.3 0.85 98.8 0.85 99.5 0.85 97.4Nº 40 0.425 97.7 0.425 97.9 0.425 96.9 0.425 99.7 0.425 97.4 0.425 98.3 0.425 98.1 0.425 98.8 0.425 94.7Nº 60 0.25 95.1 0.25 93.1 0.25 92.6 0.25 98.8 0.25 91.9 0.25 96.1 0.25 94.4 0.25 97.8 0.25 88.2Nº 100 0.15 90.8 0.15 80.9 0.15 88.8 0.15 96.7 0.15 74.7 0.15 92.3 0.15 79.4 0.15 95.2 0.15 76.6Nº 200 0.075 58.8 0.075 64.5 0.075 82.2 0.075 69.8 0.075 53 0.075 62.6 0.075 56.2 0.075 59.4 0.075 58.3
D15 estimated as 0.025
All Steps below are from USDA Ch. 26 Example 26-2A
Step 4. Base Soil
Category 2 2 2 2222 22
D85 0.14 0.18 0.11 0.12 0.21 0.13 0.19 0.13 0.22
Step 5. Filtering
Criteria (Max D15)
(mm)0.70 0.70 0.70 0.70 0.70 0.70 0.70 0.70 0.70
Step 6. Min D15 0.08 0.07 0.05 0.06 0.08 0.07 0.08 0.08 0.08
Step 7. Ratio 9.15 10.03 12.79 10.86 8.24 9.74 8.74 9.24 9.07
Control Point 1
(D15max)0.38 0.35 0.27 0.32 0.42 0.36 0.40 0.38 0.39
Control Point 2
(D15min)0.08 0.07 0.05 0.06 0.08 0.07 0.08 0.08 0.08
Step 8. MaxD10 0.32 0.29 0.23 0.27 0.35 0.30 0.33 0.32 0.32
CP3 Max D60 1.91 1.74 1.37 1.61 2.12 1.80 2.00 1.89 1.93
CP4 Min D60 0.38 0.35 0.27 0.32 0.42 0.36 0.40 0.38 0.39
Step 9. CP5 D5min 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08
CP6 D100 max 75.00 75.00 75.00 75.00 75.00 75.00 75.00 75.00 75.00
Step 10. CP7 D10 0.06 0.06 0.05 0.05 0.07 0.06 0.07 0.06 0.06
CP8 D90 20.00 20.00 20.00 20.00 20.00 20.00 20.00 20.00 20.00
For Plotting:4.75 100.00
Step 11. Connecting Control Points
CP D(mm) % Finer D(mm) % Finer D(mm) % Finer D(mm) % Finer D(mm) % Finer D(mm) % Finer D(mm) % Finer D(mm) % Finer D(mm) % Finer
4 0.382653 60 0.348837 60 0.273722628 60 0.32234957 60 0.424528 60 0.359425 60 0.400356 60 0.378787879 60 0.385935 602 0.076531 15 0.069767 15 0.054744526 15 0.064469914 15 0.084906 15 0.071885 15 0.080071 15 0.075757576 15 0.077187 155 0.075 5 0.075 5 0.075 5 0.075 5 0.075 5 0.075 5 0.075 5 0.075 5 0.075 56 75 100 75 100 75 100 75 100 75 100 75 100 75 100 75 100 75 1003 1.913265 60 1.744186 60 1.368613139 60 1.611747851 60 2.122642 60 1.797125 60 2.001779 60 1.893939394 60 1.929674 601 0.382653 15 0.348837 15 0.273722628 15 0.32234957 15 0.424528 15 0.359425 15 0.400356 15 0.378787879 15 0.385935 157 0.063776 10 0.05814 10 0.045620438 10 0.053724928 10 0.070755 10 0.059904 10 0.066726 10 0.063131313 10 0.064322 10
Step 12. Determine Gradation from plot
Shaded boxes means these values were changed to meet the requirements from the references listed below.References cited and listed in Appendix G
D50 base 0.06 0.06 0.05 0.05 0.07 0.06 0.07 0.06 0.06D50 Fine Filter 0.31 0.29 0.23 0.27 0.35 0.30 0.33 0.31 0.32D50 Course Filter 1.57 1.43 1.13 1.33 1.75 1.48 1.65 1.56 1.59
Nelson eqn 4.35 2.81 1.90 2.56 2.75 2.02 2.73 2.14 2.94 1.74Cedergren eqn 5.3 24.67 24.67 24.67 24.67 24.67 24.67 24.67 24.67 24.67Nelson eqn 4.36 2.81 1.90 2.56 2.75 2.02 2.73 2.14 2.94 1.74
W7 (Field ID 8) W1 (Field ID 12) W2 (Field ID 13)
Sandy Clay Random Fill
E4 (Field ID 2)
Sandy Clay Random Fill
E5 (Field ID 3) E6 (Field ID 4) E7 (Field ID 5) E8 (Field ID 6) W9 (Field ID 7)
W2 (Field ID 13)
Sandy Clay Random Fill Clay Random Fill Sandy Clay Random Fill
Sandy Clay Random Fill Sandy Clay Random Fill Sandy Clay Random Fill Sandy Clay Random Fill
E6 (Field ID 4) E7 (Field ID 5) E8 (Field ID 6) W9 (Field ID 7) W7 (Field ID 8) W1 (Field ID 12)E4 (Field ID 2) E5 (Field ID 3)
Course Design 
Fine Design 
Band (Upper)
Filter Transtion Design_NRCS(7-6-12):2010Fine-Grained Material_Final
Attachment G.2
Client: Energy Fuels Resources (USA) Inc Job No.: 1009740Project: White Mesa Reclamation Plan Date: 7/9/2012Detail: Erosion Protection Computed By: TMS
USDA Filter Gradation Calulations - 2012 Material Testing
Step 1: Plot Gradation Curve of Base SoilField ID
Description
Sieve Sizes Diameter (mm)% Finer Diameter (mm)% Finer Diameter (mm)% Finer Diameter (mm)% Finer Diameter (mm)% Finer Diameter (mm)% Finer Diameter (mm)% Finer Diameter (mm)% Finer Diameter (mm)% Finer Diameter (mm)% Finer
2" 50.8 100 50.8 100 50.8 100 50.8 100 50.8 100 50.8 100 50.8 100 50.8 100 50.8 100 50.8 1001" 25.4 100 25.4 100 25.4 81.93 25.4 93.18 25.4 100 25.4 100 25.4 82.21 25.4 85.17 25.4 75.41 25.4 1003/4" 19.1 100 19.1 100 19.1 76.8 19.1 90.46 19.1 100 19.1 100 19.1 81.53 19.1 79.85 19.1 75.41 19.1 98.843/8" 9.8 100 9.8 99.31 9.8 66.01 9.8 79.02 9.8 100 9.8 99.64 9.8 75.03 9.8 71.12 9.8 69.81 9.8 97.64Nº 4 4.75 99.56 4.75 98.46 4.75 60.03 4.75 69.56 4.75 99.89 4.75 99.08 4.75 70.97 4.75 65.34 4.75 68.41 4.75 94.13Nº 10 2 97.56 2 97.21 2 56.18 2 59.53 2 99.72 2 97 2 66.88 2 59.49 2 66.04 2 89.65Nº 20 0.85 95.84 0.85 96.11 0.85 54.66 0.85 53.25 0.85 99.46 0.85 95.03 0.85 64.04 0.85 55.59 0.85 63.76 0.85 86.42Nº 40 0.425 94.66 0.425 95.19 0.425 52.56 0.425 49.39 0.425 98.73 0.425 93.04 0.425 59.3 0.425 48.97 0.425 58.56 0.425 84.16Nº 60 0.25 92.35 0.25 93.34 0.25 47.28 0.25 43.49 0.25 96.47 0.25 88.27 0.25 45.76 0.25 33.93 0.25 47.26 0.25 80.58Nº 100 0.15 86.48 0.15 89.93 0.15 39.4 0.15 34.43 0.15 94.12 0.15 83.32 0.15 38.09 0.15 20.12 0.15 39.94 0.15 75.53Nº 200 0.075 76.74 0.075 82.68 0.075 28.78 0.075 25.11 0.075 61.5 0.075 50.38 0.075 26.77 0.075 13.78 0.075 28.17 0.075 50.1
Note: Areas with fiels ID's E1-A and W4-B were topsoil samples and thus were not included in this analysis
All Steps below are from USDA Ch. 26 Example 26-2A
Step 4. Base Soil Category 2233223432
D85 0.14 0.10 29.72 14.66 0.13 0.18 29.38 25.20 35.31 0.58
Step 5. Filtering Criteria (Max D15) (mm)0.70 0.70 53.73 35.21 0.70 0.70 62.53 100.79 67.20 0.70
Step 6. Min D15 0.10 0.10 0.16 0.18 0.10 0.10 0.17 0.27 0.16 0.10
Step 7. Ratio 7.00 7.00 343.64 196.48 7.00 7.00 371.98 368.62 420.65 7.00
Control Point 1 (D15max)0.50 0.49 0.78 0.90 0.50 0.50 0.84 1.37 0.80 0.50
Control Point 2 (D15min)0.10 0.10 0.16 0.18 0.10 0.10 0.17 0.27 0.16 0.10
Step 8. MaxD10 0.42 0.41 0.65 0.75 0.42 0.42 0.70 1.14 0.67 0.42
CP3 Max D60 2.50 2.45 3.91 4.48 2.50 2.50 4.20 6.84 3.99 2.50
CP4 Min D60 0.50 0.49 0.78 0.90 0.50 0.50 0.84 1.37 0.80 0.50
Step 9. CP5 D5min 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08
CP6 D100 max 75.00 75.00 75.00 75.00 75.00 75.00 75.00 75.00 75.00 75.00
Step 10. CP7 min D10 0.08 0.08 0.13 0.15 0.08 0.08 0.14 0.23 0.13 0.08
CP8 D90 20 20 20 20 20 20 20 20 20 20
For Plotting:4.75 100
Step 11. Connecting Control Points
CP D(mm) % Finer D(mm) % Finer D(mm) % Finer D(mm) % Finer D(mm) % Finer D(mm) % Finer D(mm) % Finer D(mm) % Finer D(mm) % Finer D(mm) % Finer
4 0.5 60 0.49 60 0.782 60 0.896 60 0.5 60 0.5 60 0.840 60 1.367 60 0.799 60 0.5 60
2 0.1 15 0.1 15 0.156 15 0.179 15 0.1 15 0.1 15 0.168 15 0.273 15 0.160 15 0.1 15
5 0.075 5 0.075 5 0.075 5 0.075 5 0.075 5 0.075 5 0.075 5 0.075 5 0.075 5 0.075 5
6 75 100 75 100 75 100 75 100 75 100 75 100 75 100 75 100 75 100 75 100
3 1.4 60 1.3 60 3.909 60 4.480 60 1.8 60 2.2 60 4.202 60 6.836 60 3.994 60 2.2 60
1 0.5 15 0.49 15 0.782 15 0.896 15 0.5 15 0.5 15 0.840 15 1.367 15 0.799 15 0.5 157 0.083 10 0.083 10 0.130 10 0.149 10 0.083 10 0.083 10 0.140 10 0.228 10 0.133 10 0.083 10
Step 12. Determine Gradation from plot
Shaded boxes means these values were changed to meet the requirements from the references listed belowReferences cited and listed in Appendix G
D50 base 0.05 0.05 0.34 0.49 0.06 0.07 0.30 0.49 0.29 0.07D50 Fine Filter 0.41 0.40 0.64 0.74 0.41 0.41 0.69 1.12 0.66 0.41D50 Course Filter 1.20 1.12 3.21 3.68 1.51 1.82 3.46 5.62 3.28 1.82
Nelson eqn 4.35 3.61 4.95 0.03 0.06 3.88 2.72 0.03 0.05 0.02 0.86Cedergren eqn 5.3 24.56 24.69 9.45 7.48 24.78 24.48 11.34 11.44 11.23 24.34Nelson eqn 4.36 3.61 4.95 0.03 0.06 3.88 2.72 0.03 0.05 0.02 0.86
E3-A
W5-B W8-A
W8-BSandy Clay Random
Fill
Sandy Clay Random
Fill
Sandy Clay Random
Fill
W8-AW5-BE5-B W9-BSandy Clay Random
Fill
W8-B W9-BW2-B W5-AE3-A E5-B E8-B W2-A
Sandy Clay Random
Fill
Sandy Clay Random
Fill Clay Random Fill
Sandy Clay Random
Fill
Sandy Clay Random
Fill
Sandy Clay Random
Fill
E8-B W2-A W2-B W5-A
Course Design 
Band (Lower)
Fine Design 
Band (Upper)
Filter Transtion Design_NRCS(7-6-12):2012 Fine-Grained MaterialAttachment G.2
Client: Energy Fuels Resources (USA) Inc. Job No.: 1009740
Project: White Mesa Reclamation Plan Date: 8/22/2015
Detail: Erosion Protection Computed By: TMS/MMD
Apron Protection
Source: Abt, SR, Johnson, TL, Thornton, CI, and Trabant, SC, Riprap Sizing
at Toe of Embankment Slopes, Journal of Hydraulic Engineering, Vol. 124, No. 7, July 1998.
Equation: D50=10.46*S^0.43*qd^0.56
Apron C:
Cell 2
Northern
Side Slope
Apron B:
Cell 4A
Southern
Side Slope
Apron A: Non-
Accumulating
Slopes West
unit discharge (cfs/ft) 0.65 0.87 0.06 0.06
Cr 1 1 1 1
Cf 3 3 3 3Cm 1.35 1.35 1.35 1.35
design discharge (cfs/ft) 2.63 3.51 0.25 0.25
Slope (ft/ft) 0.2 0.2 0.2 0.2
D50 Angular (in) 9.0 10.6 2.4 2.4D50 Rounded (in)12.6 14.8 3.4 3.4
Erosion Protection_25Aug2015:Apron Protection
Attachment G.2
Client: Energy Fuels Resources (USA) Inc. Job No.: 1009740
Project: White Mesa Reclamation Plan Date: 8/22/2015Detail: Erosion Protection Computed By: TMS/MMD
Interstitial Velocities - Apron
Source: NUREG 1623, Section DAbt, SR, JF Ruff, RJ Wittler (1991). Estimating Flow Through Riprap, Journal of Hydraulic Engineering, Vol. 117, No. 5, May.
Description
Non-
Accumulating
Side Slopes -
Rounded
Cell 1 Disposal
Area Side
Slope - Angular
Cell 4A Flow
Path 2 Southern
Side Slope -
Angular
Minimum D50 (inches) 3.18 8.99 10.58 from Safety Factor Method, or Abt/Johnson Method, assuming rounded rock
Minimum D10 (inches) 0.74 2.10 2.47 from preliminary gradation specsMaximum D10 (inches) 0.99 2.80 3.29 from preliminary gradation specs
Slope (ft/ft) 0.01 0.01 0.01 from preliminary designMin Velocity (ft/s) 0.11 0.19 0.21 calculated from Abt et al. (1991) based on Min D10
Max Velocity (ft/s) 0.13 0.22 0.24 calculated from Abt et al. (1991) based on Max D10Underlying filter
required?No No No Per NUREG 1623, Appendix D, section 2.1.1
Erosion Protection_25Aug2015:Apron Interstitial VelocityAttachment G.2
Client: Energy Fuels Resources (USA) Inc. Job No.: 1009740
Project: White Mesa Reclaimation Date: 8/22/2015
Detail: Erosion Protection Computed By: TMS/MMD
Modified Universal Soil Loss Equation (MUSLE)
Source : Clyde et al. (1978) as presented in NUREG 4620, section 5.1.2
A=R*K*LS*VM
Topsoil Rock Mulch
Percent silt and very fine sand 43.6 32.7 from laboratory testing
Percent sand (0.10-2.0 mm)39.2 29.4 from laboratory testing
Percent organic matter 1.5 1.5
Soil structure Number 23
Permeability 32
Inputs for LS factor
Slope length (ft) 1440 1200 from Figure G.1
slope steepness (%) 0.5 0.8
m exponent 0.2 0.2 Table 5.2 of NUREG 4620
Topsoil Rock Mulch
R Rainfall Factor 30 30
K Soil Erodibility factor 0.28 0.12 From nomograph Fig. 5.1 of NUREG 4620
LS Topographic factor 0.16 0.18
VM Dimensionless erosion control factor 0.4 0.4 From Table 5.3 of NUREG 4620 for seedings, 0-60 days
A Soil Loss (tons/acre/year) 0.54 0.27
A Soil density (pcf)100 106 from laboratory testing
A Soil Loss (inches/1000 years) 3.0 1.4
Inputs for K factor
From Table 5.1 of NUREG 4620 for eastern third of Utah
Erosion Protection_25Aug2015:Soil Loss Equation
Attachment G.2
Client: Energy Fuels Resources (USA) Inc. Job No.: 1009740
Project: White Mesa Mill Date:8/14/2012
Detail: Discharge Channel Computed By:JMC
Peak Discharge of PMP precipitation
Sed-Channel 148.40 1 26.3 16.4 2440.1
Q (cfs)Description
Total Drainage Area
(acres) C Tc (min) Intensity (in/hr)
riprap:Flow-PMP2
Attachment G.2
Client: Energy Fuels Resources (USA) Inc. Job No.: 1009740
Project: White Mesa Mill Date: 8/14/2012
Detail: Discharge Channel Computed By: JMC
Time of Concentration
1-hour PMP (in) 8.3
Kirpich SCS
Brant and
Oberman Average
Sed-Channel 0.010 4600 30.1 30.2 18.7 26.3 86.9 7.21 16.4
Source: Brant and Oberman(1975) as presented in UMTRA TAD (1989)
Formula: tc=C(L/Si^2)^(1/3).
Source:Kirpich (1940) as presented in NUREG 4620
Formula: tc=0.00013*L^0.77/S^0.385 with L in feet, tc in hoursSource: SCS as presented in NUREG 4620
Formula: tc=(11.9L^3/H)^0.385 with L in miles, H in feet, t in hours
% of one-hour PMP=RD/(0.0089*RD+0.0686) for tc<15 min based on Table 4.1 of TAD
Cell geometry and grading based on REC-1 Reclamation Plan Revisions, September, 2011
Intensity
(in/hr)
Time of Concentration (minutes)
Description
Slope
(feet/feet)
Path
Length
(feet)
% of 1-hour
PMP PDPMP (in)
riprap:Time of concentration
Attachment G.2
Client: Energy Fuels Resources (USA) Inc.Job No.: 1009740
Project: White Mesa Mill Date:8/2/2012
Detail:Discharge Channel Computed By:JMC
Peak Channel Velocity
Design flow: 2,440 cfs
Trapezoid or triangular channels
slope (ft/ft) 0.009 ft/ft
Channel Side Slope 1 (ft/ft) 0.33 ft/ft
Channel Side Slope 2 (ft/ft) 0.33 ft/ft
bottom width 150 ft
Q 2,440 cfs
n native soils 0.020 bedrock channel with minor irregularities
Area of flow (A) 258.52 ft^2
Wetted Perimeter Slope 1 (P1) 5.32 ft
Wetted Perimeter Slope 2 (P2) 5.32 ft
Hydraulic Radius (R) 1.61 ft
Top Width (T) 160.1 ft
Maximum depth of flow (d) 1.67 ft
Q calc 2440.0 cfs ok
average velocity (v)9.4 fps 8-10 fps ok
unit discharge 15.74 cfs/ft take as total Q divided by average flow width
Copy of channel sizing:8 (3)
Attachment G.2
Client: Energy Fuels Resources (USA) Inc.Job No.: 1009740Project: White Mesa Mill Date:8/14/2012Detail:Discharge Channel Computed By:JMC
Peak Channel Velocity
Design flow: 2,440 cfs
Trapezoid or triangular channelsslope (ft/ft) 0.009 ft/ftChannel Side Slope 1 (ft/ft) 0.33 ft/ftChannel Side Slope 2 (ft/ft) 0.33 ft/ftbottom width 150 ft
Q 2,440 cfs
n native soils 0.030 bedrock channel with moderate irregularities
Area of flow (A) 332.10 ft^2
Wetted Perimeter Slope 1 (P1) 6.77 ft
Wetted Perimeter Slope 2 (P2) 6.77 ft
Hydraulic Radius (R) 2.03 ft
Top Width (T) 162.9 ft
Maximum depth of flow (d) 2.12 ft
Q calc 2440.0 cfs ok
average velocity (v)7.3 fps less than 8-10 fps ok
unit discharge 15.60 cfs/ft take as total Q divided by average flow width
Copy of channel sizing:8 (6)
Attachment G.2
Client: Energy Fuels Resources (USA) Inc.Job No.: 1009740
Project: White Mesa Mill Date:8/2/2012
Detail:Discharge Channel Computed By:JMC
Manning's N-value Determination
From US Department of the Interior, Bureau of Reclamation. Design of Small Dams. p. 595. 1987.
Basic N-value for channels in Rock 0.015
Modifications of N-value 0.005 Minor degree of irregularity
0.010 Moderate degree of irregularity
0.020 Severe irregualrity
Based on seismic refraction data, test numbers 1-3, shear wave velocities ranged from 3100 to 7400 feet/sec (see test results from Nielsons, 1978, Appendix A D'Appolonia, 1979). The bedrock in the area o
excavation is anticpated to range from soft and rippable to hard rock requiring blasting. The excavated rock surface will likely exhibit minor ro moderate irregularity.
Assume an N-value ranging from 0.020 0.030
From US Army Corps of Engineers. Hydraulic Design of Flood Control Channels, EM 1110-2-1601. p.2-16. June 1994.
From Table 2-5, Suggested Maximum Permissible Mean Channel Velocities
Poor Rock (usually sedimentary) 10.0 fps
Soft Sandstone 8.0 fps
Soft Shale 3.5 fps
Good Rock (usually igneous or hard metamorphic) 20.0 fps
The bedrock within the channel excavation is anticipated to consist of fine to medium-grained sandstone of varying cementation and weathering, or claystone. (see borings by Dames and Moore, 1978)
Based on the presumed rock type and the referenced table above, permissible mean channel velocities may range up to 8 to 10 fps.
Copy of channel sizing:Sheet1
Attachment G.2
Updated Tailings Cover Design Report

APPENDIX H
TAILINGS DEWATERING
Updated Tailings Cover Design Report

ATTACHMENT H.1
TAILINGS DEWATERING INFORMATION FOR CELLS 2 AND 3
SELECT INFORMATION FROM MWH (2010)
Denison Mines (USA) Corp.
Revised Infiltration and Contaminant Transport
Modeling Report, White Mesa Mill Site,
Blanding, Utah
March 2010

REVISED
INFILTRATION AND CONTAMINANT TRANSPORT
MODELING REPORT
WHITE MESA MILL SITE
BLANDING, UTAH
DENISON MINES (USA) CORP.

March 2010

Prepared for:

Denison Mines (USA) Corp. 1050 17th Street, Suite 950 Denver, Colorado
80265

Prepared by:

MWH Americas, Inc.
10619 South Jordan Gateway, Suite 100
Salt Lake City, Utah 84095

APPENDIX J
TAILINGS CELL DEWATERING MODELING

J-1
APPENDIX J
TAILINGS CELL DEWATERING MODELING
This appendix describes the dewatering modeling performed with MODFLOW to
estimate the time required to dewater the tailings in Cells 2 & 3 and estimate the residual
saturated thickness of tailings. The model-predicted water levels (saturated thickness of
tailings) are used in the Giroud-Bonaparte Equation to calculate potential flux rates
through the liner into the underlying bedrock vadose zone, as described in Appendix L.
A tailings cell dewatering model was not constructed for Cells 4A & 4B because
analytical solutions presented by Geosyntec Consultants (2007) were deemed adequate
given the uniform distribution of the drain system in those cells.
Tailings Cells 2 & 3 Slimes Drains
To dewater the tailings in Cells 2 & 3, slimes drain networks consisting of perforated
PVC pipe are located across the base of the cells which drain to an extraction sump on
the southern side of each cell. The drains cover an approximately 400-foot by 600-foot
area in the southern part of the cells. The design for the slimes drains is the same for both
cells (D’Appolonia Consulting Engineers, 1982). The drain pipes are situated in nine
alignments spaced 50 feet apart running in an approximately east-west direction. Each
drain is 600 feet long, extending 300 feet in each direction from the central collection
pipe that drains to the sump. The drain pipes are covered by an envelope of sand over the
drains, rather than a continuous layer across the bottom of the tailing cells (“burrito
drains”). Water gravity drains to the sump, whence it is pumped to Cell 1.
METHODOLOGY
Model Code
The computer code MODFLOW was used in this modeling effort with the Department of
Defense Groundwater Modeling System (GMS) pre- and post-processor. MODFLOW is

J-2
a modular three-dimensional finite-difference flow model developed by the United States
Geological Survey (McDonald and Harbaugh, 1988; Harbaugh et al., 2000) to calculate
hydraulic-head distribution and determine flow within a simulated aquifer. This model
was selected because it can adequately represent and simulate the hydrogeologic
conditions necessary and it is well-documented, frequently used, and a versatile program
that is widely accepted by the scientific and regulatory communities (Anderson and
Woessner, 1992).
Model Domain, Layering, and Grid
The domain for the tailings cell model was approximately 3,500 by 1,200 feet,
representing Cells 2 & 3 (see Figure J-1). The finite-difference grid consisted of a
constant spacing of 10 feet. The model included two layers to represent the tailings and
slimes drains. The bottom layer was 1 foot thick so that the drains could be simulated
explicitly (hydraulic conductivity was variable to represent tailings between the drains).
The top layer had a variable thickness that represented the tailings. The water level in the
top layer was allowed to vary spatially and temporally. The bottom elevations were set
based on information presented in the tailings cell construction report (D’Appolonia
Consulting Engineers, 1982).
Boundary Conditions
Boundary conditions define hydraulic constraints at the boundaries of the model domain.
There are three general types of boundary conditions:
1. Specified head or Dirichlet (e.g., constant head)
2. Specified flux or Neumann (e.g., constant flow, areal recharge, extraction
wells, no flow)
3. Head-dependent flux or Cauchy (e.g., drains, evapotranspiration)

J-3
No-flow boundaries are a special case of the specified flux boundary in which the flow is
set to zero.
For the tailings cell model, no-flow boundaries were assumed to surround the domain. A
net flux rate from the cell was assumed across the entire domain. This assumed flux rate
represents the combination of potential fluxes from the cell through the liner and
potential infiltration into the cell through the cover. The net flux rate was calculated
using the average infiltration rate through the cover predicted by the HYDRUS-1D
tailings cover model and the potential flux rate through the bottom of
Cells 2 & 3 (see Appendix L). The resulting average net flux rate for Cells 2 & 3 was
6.9 x 10-4 cm/day (2.27 x 10-5 ft/day). This assumed net flux rate was applied uniformly
across the domain and was simulated with MODFLOW as a negative recharge rate.
The slimes drains were simulated with the Drain package in MODFLOW. Drains are
head-dependent boundary conditions in which flow varies based on the difference in
hydraulic head in the aquifer and the drain: as head in the aquifer declines (tailings in this
case), so does the dewatering rate. Groundwater flow to this array is gravity driven and
dependent on the head difference between the surrounding material and the perforated
pipe. Operation of the slimes drain extraction pump is only necessary to extract the
groundwater driven into this array to maintain a head difference. Essentially, this system
acts as a field drain array. The MODFLOW Drain package was developed specifically to
simulate this sort of gravity driven, head dependent drain system. A thorough
quantitative explanation of the MODFLOW Drain package is presented in A Modular
Three-Dimensional Finite-Difference Ground-Water Flow Model: U.S. Geological
Survey Techniques of Water-Resources Investigations, book 6, chap. A1 (McDonald and
Harbaugh, 1988).
Drain cells were set along nine alignments spaced 50 feet apart. Each drain was 600 feet
long. Drains were set in the model as shown on Figure J-1.

J-4
Hydraulic Properties
The saturated hydraulic conductivity of the tailings assumed for White Mesa was based
on measured values reported for the aquifer testing performed in uranium mill tailings at
Cotter Corporation’s Canon City Mill tailings impoundment (MFG, Inc., 2005). See
Appendix I for details concerning the comparison of tailings grain size for the White
Mesa Mill to those of the Canon City Mill. The average hydraulic conductivity of the
tailings ranged from 2.1 ft/day (7.4 x 10-4 cm/sec) to 8.5 ft/day (3.0 x 10-3 cm/sec) with
an average value of 4.8 ft/day (1.7 x 10-3 cm/sec). A hydraulic conductivity of 4.8 ft/day
was assumed for the tailings (in both model layers). A hydraulic conductivity of
25 ft/day was assumed for the sand adjacent to the slimes drain in the bottom layer of the
model. This was used only in layer 1 in the cells that represent drains. Hydraulic
conductivity values representative of tailings were assumed across the remainder of the
bottom layer.
Calibration
The calibration process involves iterating values for model parameters in sequential
model simulations to produce estimated values that better match field-measured data.
The initial-parameter values were adjusted through calibration until the model produced
results that adequately simulated the known data. The tailings cell model was calibrated
by varying the drain conductance term until the flow rates approximately matched the
2007 dewatering rates (average rate of 12.5 gpm) and average water levels of 20 feet
above the liner.
RESULTS
The MODFLOW dewatering model predicts that the tailings would draindown
nonlinearly through time reaching an average saturated thickness of 3.5 feet (1.07 m)
after 10 years of dewatering (see Figure J-2). The model also predicts that dewatering
rates would decline to approximately 2 gallons per minute (gpm) after 10 years of
pumping. This reduction in pumping rates is caused by the reduction in saturated

J-5
thickness of tailings. Dewatering rates are also controlled by the saturated hydraulic
conductivity of the tailings. If the actual hydraulic conductivity of the tailings is higher
than the value assumed in the model, dewatering rates could be higher and water levels
could be lowered more rapidly. Conversely, if the actual hydraulic conductivity of the
tailings is lower than the value assumed in the model, dewatering rates could be lower
and water levels could require more time to dewater. Mass balance errors for the
MODFLOW model were less than 1%.
A dewatering model was not constructed for Cells 4A & 4B because dewatering rates
were estimated by Geosyntec Consultants (2007). Water levels in Cell 4A were
estimated to decline to less than 1 foot after approximately six years of dewatering. Cells
4A & 4B is estimated to be dewatered significantly faster than Cells 2 & 3 due to the
more extensive slimes drain network. The dewatering system in Cell 4B is assumed to be
designed similarly to Cell 4A, thus dewatering rates were assumed to be similar.
REFERENCES
Anderson, M.P., and W.W. Woessner, 1992. Applied Groundwater Modeling:
Simulation of Flow and Advective Transport. Academic Press, Inc. Harcourt
Brace Jovanovich, Publishers, San Diego, CA. 381p.
D’Appolonia Consulting Engineers, Inc., 1982. Construction Report, Initial Phase – Tailings Management System, White Mesa Uranium Project, Blanding, Utah.
Geosyntec Consultants, 2007. Analysis of Slimes Drains for White Mesa Mill - Cell 4A,
Computations submitted to Denison Mines, 12 May 2007.
Harbaugh, A.W., Banta, E.R., Hill, M.C., and McDonald, M.G., 2000, MODFLOW-
2000, the U.S. Geological Survey modular ground-water model -- User guide to modularization concepts and the Ground-Water Flow Process: U.S. Geological
Survey Open-File Report 00-92, 121 p.
McDonald, M.G., and Harbaugh, A.W., 1988, A Modular Three-Dimensional Finite-
Difference Ground-Water Flow Model: U.S. Geological Survey Techniques of
Water-Resources Investigations, book 6, chap. A1, 586 p.

J-6
MFG, Inc., 2005. Update of the Mill Decommissioning and Tailings Reclamation Plan for the Cotter Corporation Canon City Milling Facility (Appendix A 1999
Tailings Investigation). Prepared for Cotter Corporation. August 2005.

J-7

Figure J-1. MODFLOW tailings cell model domain, grid, and boundary conditions

J-8
Figure J-2. Model-predicted average saturated thickness of tailings in Cells 2 & 3 with dewatering pumping.

Updated Tailings Cover Design Report

ATTACHMENT H.2
TAILINGS DEWATERING INFORMATION FOR CELLS 4A AND 4B
SELECT INFORMATION FROM GEOSYNTEC (2008a, 2008b) AND DRC (2008)
Geosyntec'>
consultants
COMPUTATION COVER SHEET
D~~ ~~
Client: Mines Project: White Mesa Mill Proposal No.: SC0349-01
~~~~~~~~~~~~~~~
Task No. 04
Title of Computations ANALYSIS OF SLIMES DRAIN
Computations by: Signature
Printed Name Meghan Lithgow Date
Title Staff Engineer
Assumptions and Signature
Procedures Checked Printed Name Gregory T. Corcoran Date by:
(peer reviewer) Title Principal
Computations Signature
Checked by: Printed Name Gregory T. Corcoran Date
Title Principal
Computations Signature
backchecked by: Printed Name Meghan Lithgow Date (originator)
Title Staff Engineer
Approved by: Signature (pm or designate) Printed Name Gregory T. Corcoran Date
Title Principal
Approval notes:
Revisions (number and initial all revisions)
No. Sheet Date By Checked by Approval
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Page of 11
Written by: M. Lithgow Date: 05/11/07 Reviewed by: G. Corcoran
Client: Denison Project: White Mesa Mill -Project/ SC0349-0l
Mines Cell 4A Proposal No.:
PURPOSE AND METHOD OF ANALYSIS
Date: 05/12/07
Task 04
No.:
The purpose of this calculation package is to demonstrate that the proposed "slimes
drain system" will dewater the tailings at the site within a reasonable time.
Fluid flow rate in porous media will be evaluated using Darcy's law.
ASSUMPTIONS
• This project involves the construction of a 42 acre double lined tailings cell (Cell
4A) that is approximately 42 feet deep at its deepest point and 26 feet deep at the
shallowest point with an average depth of 34 feet. The liquids level in the cell
will be kept a minimum of 3 feet below the top of the berm (free-board).
Therefore, the maximum depth of liquid in the cell will be 39 feet at the start of
de watering.
• The cell will be filled with -28 mesh (US No. 30 sieve) tailings, largely
consisting of fine sands and silts, with some clay. Results of grinding test sieve
analyses, which are reported based on Tyler Mesh sieve sizes, are presented in
Table 1. The grinding test data report is presented in Attachment A. Sieve to
Tyler Mesh conversions are presented in Attachment B.
• The tailings will be placed within the cell in a slurry form under the surface of
the free liquid contained within the cell. This placement methodology is
anticipated to result in a low density (no compaction) soil structure. Therefore,
saturated hydraulic conductivity and total porosity are anticipated to be higher
than similar soils that are compacted.
• Based on the grinding report (Attachment A), tailings are comprised of
approximately 6% medium sand, 49% fine sand, and 45% silt and clay size
particles (Table 1 ).
• Based on the gradation of the tailings (Table 1) from the grinding report
(Attachment A), the tailings would be classified as silty sand (SM) by the unified
soil classification system (USCS). According to the Hydrologic Evaluation of
Landfill Performance (HELP) Model Engineering Documentation (Attachment
C), low density SM soils would exhibit saturated hydraulic conductivities of
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Client: Denison Project: White Mesa Mill -Project/ SC0349-0l
Mines Cell 4A Proposal No.:
Date: 05/12/07
Task 04
No.:
between 1.7x10-3 cm/sec and 5.2x10-4 cm/sec and low density silt (ML) and
sandy clay (SC) would exhibit saturated hydraulic conductivities of between
3.7x10-4 cm/sec and 1.2x10-4 cm/sec. The geomean of these two groups of soils,
which are gradationally similar to the tailings, is 4.74x10-4 cm/sec (Table 2).
According to Cedergren (Attachment D), under a normal stress of 2 tons per
square foot (approximate normal stress on deeper tailings in the cell), medium
sand, fine sand, silt, and silty clay would exhibit a saturated hydraulic
conductivities of approximately 2x10-2 cm/sec, lxl0-2 cm/sec, lxl0-4 cm/sec
5x10-7 cm/sec, respectively. The geomean of these three soil types, where are
gradationally similar to the tailings, is 3.3lx10-4 cm/sec. The more conservative,
lower hydraulic conductivity of 3.3 lxl0-4 cm/sec, will be used in this analysis.
• Based on the gradation of the tailings from the grinding report, the tailings
would be classified as silty sand (SM) by the unified soil classification system
(USCS). According to the HELP Model Engineering Documentation
(Attachment C), low density SM soils would exhibit drainable porosity of
between 0.251 and 0.332 and low density silt (ML) and sandy clay (SC) would
exhibit drainable porosity of between 0.154 and 0.231. The average of these two
groups of soils, which are gradationally similar to the tailings, is 0.253 (Table 2).
According to the HELP Model Engineering Documentation, medium sand, fine
sand, silt, and silty clay would exhibit drainable porosity values of 0.35, 0.29,
0.14, and 0.11, respectively. The average of these three soil types, where are
gradationally similar to the tailings, is 0.22. Since the average drainable porosity
of 0.22 corresponds to the lower hydraulic conductivity (higher density, lower
permeability, lower porosity) selected above, this value will be used in this
analysis.
• The permeability of the tailings is isotropic.
• Darcy's law will be used to compute groundwater flow velocities.
• The proposed slimes drain system will consist of a series of strip drains
(geotextile wrapped HDPE core, 1" thick, 12" wide, with a transmissivity of
29 (gal/min/ft), which connect to a perforated 4" diameter PVC header pipe that
is bedded in drainage aggregate and wrapped in a woven geotextile. The PVC
pipe will convey the liquid to the sump for removal.
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Written by: M. Lithgow Date: 05/11/07 Reviewed by: G. Corcoran Date: 05/12/07
Client: Denison
Mines
Project: White Mesa Mill -Project/ SC0349-01
Cell 4A Proposal No.:
Task 04
No.:
• The slimes drain spacing will be 50' and will be continuous across the base of
the cell (Figure 1 ).
CALCULATIONS
The flow geometry for the average depth of liquid within the cell is illustrated on Figure
2 and used to compute the emptying time for the proposed slimes drain system.
Calculate the flow into a unit length of strip drain for the various hydraulic gradient
conditions.
At the start of cell dewatering, the maximum depth of liquid will vary between 23 feet at
the shallow end and 39 feet at the deep end, with an average depth of approximately 31
feet. As the water level drops within the cell, the length of the longest flow path and the
associated hydraulic gradient will continually change with time.
The total volume to be drained by a unit length of strip, Q, can be calculated using
Darcy's law as follows:
Q=kiA
where:
k = hydraulic conductivity of tailings = 3. 31x10-4 cm/sec = 6. 51x10-4 ft/min
i =gradient along flowpath = dh = -2.!_ = 0.78 (see Figure 2)
dl 39.8
A= area of strip drain where flow will pass =1.17 ft2/ft
Q = ( 6.51x10-4 ~ )(0. 78)(1.17 ft2) mm
ft3 Q = 5.94xl0-4 -. x 7.48 gal/ft3 = 4.44x10-3 gpm
mm
(see Figure 3)
For each one foot incremental drop in fluid elevation within the cell, the total volume to
be drained by a unit length of strip drain is as follows:
V = 1 ft unit length x lft depth x 50 ft width x .022 (drainable porosity)= 11 CF of free
liquid
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Written by: M. Lithgow Date: 05/11/07 Reviewed by: G. Corcoran
Client: Denison Project: White Mesa Mill -Project/ SC0349-0l
Mines Cell 4A Proposal No.:
Date: 05/12/07
Task 04
No.:
Therefore, the time to drain the first one foot of liquid within the cell can be estimated
as follows:
t = V/Q = 11CFI5.94x10-4 CF/min= 18,519 minutes= 12.86 days
Tables 3, 4, and 5 depict the calculations for the maximum (39 feet), average (31 feet),
and minimum (23 feet) cell liquid depth, respectively. The results of the maximum
depth calculations indicate that the proposed slimes drain system will allow the tailings
contained in Cell 4A to drain within approximately 5.5 years.
Calculate the design flow rate of the strip drains.
For this calculation we will assume that the strip drains have a flow rate of 29 gallon per
minute per foot (Attachment E, GDE Multi-Flow, 2006), a width of 12" and that flow is
occurring under a gradient of 0.01.
Design Flow rate of strip drains:
q=E>i
where:
q = flowrate per unit width
i = dh = 0.01
dl
e = transmissivity = 29 gpm/ft
To account for detrimental effects on the geonet such as chemical clogging,
biological clogging, installation defects, and creep, partial factors of safety were used to
reduce the strip drain transmissivity. Using recommended partial factor of safety values
from Koerner (1999) (Attachment F, 2/4), the reduced transmissivity is calculated as
follows:
1 ea/low= eult[ ] FS1N x FScR x FScc x FSnc
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Written by: M. Lithgow Date: 05/11/07 Reviewed by: G. Corcoran Date: 05/12/07
Client: Denison Project: White Mesa Mill -Project/ SC0349-01
Mines Cell 4A Proposal No.:
where:
E> allow = allowable flow
E> ultimate = calculated value of flow
Task 04
No.:
FSIN =factor of safety for installation, 1.5 (CQA performed during installation)
FScR = factor of safety for creep, 2.0
FScc = factor of safety for chemical clogging, 2.0
FS8c = factor of safety for biological clogging, 1.0 (low pH precludes biological
activity)
The factors of safety are used to calculate the allowable transmissivity:
E> = 29 gpm [ 1 ] = 4 83 gpm
allow fl 1 0 . fl t .5 x 2.0 x 2. x 1.0 t
Using this transmissivity value, the average factor of safety for flow in the strip
composite is estimated to be as follows:
FS = QD = 4·83 gpm = 1,087 (Acceptable)
QR 0.0044 gpm
The average allowable flow rate is much larger than the average maximum flow rate,
even with the built-in partial factors of safety. Furthermore, as indicated on Tables 3, 4,
and 5, the calculated flow rate within the strip drain decreases with time, which further
increases the factor of safety.
Calculate the minimum required AOS and permittivity for filtration geotextile
component of strip drain
The geotextile serves as a filter between the strip composite core and the tailings
material. The geotextile minimizes fine particles of the tailings material from migrating
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Client: Denison
Mines
Project: White Mesa Mill -Project/ SC0349-01
Cell 4A Proposal No.:
Task 04
No.:
into the strip composite, yet allows water to penetrate. Migration of fine particles would
have the adverse effect of decreasing the transmissivity of the strip composite layer.
To be conservative in these calculations, the tailings material soil is assumed to consist
of more than 20 percent clay.
The retention requirements for geotextiles can be evaluated using the chart entitled "Soil
Retention Criteria for Steady-State Flow Conditions" developed by Luettich et al.,
(1991) (Attachment G, 1/3). This chart uses soil properties to evaluate the required
apparent opening size (AOS or 0 95) of the geotextile. Using the Soil Retention Chart,
the AOS of the filter fabrics shall be:
0 95 < 0.21 mm, which corresponds to sieve No. 70.
The permeability of the filter fabric must be evaluated to allow flow through the filter
fabric. The following equation can be used to evaluate the minimum allowable
geotextile permeability:
(Luettich et al. (1991), Att. G, 2/3)
where: kg= permeability of geotextile ( cm/s)
is = hydraulic gradient (dimensionless)
ks= permeability of the tailings material ( cm/s)
Hydraulic Gradient, i: Attachment G, page 3/3 from Luettich et al. (1991) lists typical
hydraulic gradients for various geotextile drainage applications. In this attachment, a
hydraulic gradient of 10 for liquid impoundment applications is recommended.
Soil Permeability, ks: A permeability of 3.31 x 10-4 cm/s was assumed for the tailings
material, as previously defined.
Therefore,
kg> is ks= (10)(3.3 lxl0-4 cm/s)
kg> 3.31 x 10-cm/s
Koerner (1999) suggests applying partial factors of safety to the ultimate flow capacity
of the geotextile to account for clogging of the geotextile. Using recommendations
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Client: Denison Project: White Mesa Mill -Project/ SC0349-01 Task 04
No.: Mines Cell 4A Proposal No.:
given in Table 2.12 on p. 150 of Koerner (1999) (Attachment F, 1/4), the following
partial safety values were applied:
soil clogging and blinding:
creep reduction of voids:
intrusion into voids:
chemical clogging:
biological clogging (low pH precludes biological activity):
Therefore,
kg>
kg>
(3.31 x 10-3)(10)(2)( 1.2)( 1.5)( 1)
0.12 cm/s
10(5-10)
2.0 (1.5 -2.0)
1.2 (1.0 -1.2)
1.5 (1.2 -1.5)
1.0 (2 -10)
The thickness of a typical nonwoven needled punched 4 oz/yd2 (135 g/m2) geotextile is
approximately 40 mils (0.10 cm), see Attachment H. Dividing the permeability by the
thickness of the geotextile results in a required minimum permittivity of 1.2 sec-1• The
geotextile used in this project has a permittivity of 2.0 sec-1, which is greater than the
required permittivity.
Check Pipe Flow Rate
Based on calculations from previous sections, the maximum daily flow rate to the sump
is estimated to be 132 gpm (0.29 cfs) (Table 3). The capacity of the pipe is calculated
based on Manning's equation for gravity flow as follows:
Where
Q = 1.486 R/lisYi A= 0.35 cfs
n
n = 0.010 (Koerner (1999), Attachment E, 4/4)
S =Slope of liner (ft/ft)= 1.0 %
Rh = hydraulic radius, ft
Q = flow rate, cubic feet per second, cfs
A = flow area, sf
Assuming 4-inch pipe:
A= n D2/4 = 12.6 sq. inches= 0.088 sf
Rh= Area (n D2/4)/Wetted Perimeter (n D)
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Client: Denison Project: White Mesa Mill -Project/ SC0349-01
Mines Cell 4A Proposal No.:
= D/4 = 1 in= 0.083 ft
1 486 2/ ]/ Q =-·-o.083730.0l72 0.088 sf= 0.28cfs=112 gpm
0.010
Date: 05/12/07
Task 04
No.:
Since 112 gpm is less than the maximum required 132 gpm, this calculation shows that
the 4-inch diameter slimes drain pipe is the limiting factor for dewatering the tailings in
the early phase of dewatering (high flow rates). However, it does not mean that the pipe
will be unable to handle this flow, but rather the pipe will require additional time to
drain. The additional time needed is computed in the following section.
Effect of Maximum Pipe Capacity on Drainage Time
The maximum capacity of the pipe is 112 gpm, as computed above. Assuming the cell's
total lateral length of strip drain is 27,550 feet, the flow rate, per foot of strip drain is
calculated to be:
1 R _ 112gallon*60min*24hr* lft3 * 1 _078 ft3
Fowate----.-
min 1 hr 1 day 7.48 gallon 27,550 feet day
The time needed to de-water first layer is:
Volume (50xlxlx0.22) ft3 __ 14 1 d Time = = 3 • ays
Drain length x flow rate 1 ft x 0.78 ft
day
The difference between the maximum daily flow rate drainage time and the maximum
daily flow the pipe is able to deliver for the first foot is:
14.l day-11.93 day (first row of Table 3) = 2.17 days.
Therefore, the first layer will require an additional 2.17 days to drain. The calculation is
repeated until the pipe's allowable flow capacity of 112 gpm is equal to the maximum
flow rate from the cell (Table 3). The additional drainage time needed for each layer is
added to the original drainage time of 5.5 years. The results of this analysis are shown
in Table 3.
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Client: Denison
Mines
Project: White Mesa Mill -Project/ SC0349-01
Cell 4A Proposal No.:
Task 04
No.:
The total additional drainage time occurs over the first 9 layers and adds 11 days (0.03
years) to the computed drainage time. Including the effects of the maximum pipe
capacity, the cell will take an estimated 5.5 years to drain.
Effect of Precipitation on Drainage Time
To account for the effect of precipitation added to the tailings cell, the HELP Model was
used to estimate the average annual leakage through a 3 foot thick (tailings above the
liquid) layer of silty sand material (Attachment I). HELP Model default parameters
were used along with a maximum 16 inch evaporative zone (conservative for dry
climate) and weather data from Grand Junction, Colorado. The model was performed
for a 10 year period and included precipitation events ranging from 5.83 to 10.36 inches
per year.
The results of this analysis suggest that a maximum average annual percolation through
the 3 foot soil layer above the liquid will be approximately 12 ft3 per acre or 504 ft3
(3,770 gal.) for the entire Cell 4A area.
The average flow rate during Cell 4A dewatering, as calculated from Table 3 is equal to
71 gpm (102,240 gallon/day).
The time required to drain the additional volume of precipitation in the tailing is
computed using the following equation:
Time= Volume = 3,770 gal = 0.04 days
Flow Rate 102 240 gal
' day
The additional time that the pond will require to empty due to precipitation is
insignificant.
Therefore, the estimated time to dewater Cell 4A will be 5.5 years (baseline)+ 0.03
years (pipe limitations)+ 0 years (precipitation)= 5.5 years.
SC0349 -Slimes Drain Calc.051207.doc
Geosyntec ':>
consultants
Page 10 of II
Written by: M. Lithgow Date: 05/11/07 Reviewed by: G. Corcoran
Client: Denison Project: White Mesa Mill -Project/ SC0349-0I
Mines Cell 4A Proposal No.:
REFERENCES
Cedergren, H.R., "Seepage, Drainage, and Flow Nets," 3rd Ed., John
Wiley & Sons, Inc., 1989
(Attachment D)
GDE Control Products, Inc. November 2006. Accessed 13 March 2007
<http://www.gdecontrol.com/Multi-Flow5.html>
(Attachment E)
Date: 05/12/07
Task 04
No.:
Hydrologic Evaluation of Landfill Performance Model, Engineering Documentation for
Version 3, EPA, 1994.
(Attachment C)
Koerner, R. M., "Designing With Geosynthetics," 4th Ed., Prentice Hall, 1999.
(Attachment F)
Luettich, S.M., Giroud, J.P., and Bachus, R.C., (1991 ), "Geotextile Filter Design
Manual, report prepared for Nicolon Corporation, Norcross, GA.
(Attachment G)
Amoco Fabrics and Fibers Company, (1991), "Amoco Waste Related Geotextiles."
(Attachment H)
SC0349 -Slimes Drain Calc.051207.doc
Sieve No. Diameter (mm)
3in. 76.2
2 in. 50.8
11/2 in. 38.1
1 in. 25.4
3/4 in. 19.1
112 in. 12.7
3/8 in. 9.530
No.4 4.750
No.10 2.000
No. 30 0.600
No. 40 0.425
No. 70 0.212
No.100 0.150
No. 200 0.075
No. 325 0.045
Pan -
Sieve No. Diameter (mm)
3 in. 76.2
2 in. 50.8
11/2 in. 38.1
1 in. 25.4
3/4 in. 19.1
1/2 in. 12.7
3/8in. 9.530
No.4 4.750
No.10 2.000
No.30 0.600
No.40 0.425
No. 70 0.212
No.100 0.150
No. 200 0.075
No. 325 0.045
Pan
%FINER= 100-!%RETA1NED
Grinding Test 1
Wt. Retained %
(grams) Retained
0.0 0.0%
0.0 0.0%
0.0 0.0%
0.0 0.0%
0.0 0.0%
0.0 0.0%
0.0 0.0%
0.0 0.0%
0.0 0.0%
1.2 1.2%
4.6 4.6%
20.8 20.8%
34.8 34.8%
53.4 53.4%
60.5 60.5%
- -
Grinding Test 6A
vvt. Ketamea
(grams)
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
1.3
5.2
21.7
34.1
54.4
59.7 -
100%
90%
0:: 80%
~ 70%
u:: 60%
1-
"lo
Retained
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
1.3%
5.2%
21.7%
34.1%
54.4%
59.7%
-
% Finer
100.0%
100.0%
100.0%
100.0%
100.0%
100.0%
100.0%
100.0%
100.0%
98.8%
95.4%
79.2%
65.2%
46.6%
39.5%
% Finer
100.0%
100.0%
100.0%
100.0%
100.0%
100.0%
100.0%
100.0%
100.0%
98.7%
94.8%
78.3%
65.9%
45.6%
40.3%
-
Table 1
DSM Screen Undersize Gradation
SIEVE ANALYSIS
Grinding Test 2A Grinding Test 28
Wt. Retained % Wt. Retained %
(grams) Retained % Finer (grams) Retained
0.0 0.0% 100.0% 0.0 0.0%
0.0 0.0% 100.0% 0.0 0.0%
0.0 0.0% 100.0% 0.0 0.0%
0.0 0.0% 100.0% 0.0 0.0%
0.0 0.0% 100.0% 0.0 0.0%
0.0 0.0% 100.0% 0.0 0.0%
0.0 0.0% 100.0% 0.0 0.0%
0.0 0.0% 100.0% 0.0 0.0%
0.0 0.0% 100.0% 0.0 0.0%
2.0 2.0% 98.0% 1.7 1.7%
7.3 7.3% 92.7% 6.0 6.0%
24.5 24.5% 75.5% 22.6 22.6%
38.1 38.1% 61.9% 35.5 35.5%
55.7 55.7% 44.3% 52.5 52.5%
62.7 62.7% 37.3% 58.8 58.8%
--- - -
Grinding Test 68
vvt. Ketamea "lo
(grams) Retained % Finer
0.0 0.0% 100.0%
0.0 0.0% 100.0%
0.0 0.0% 100.0%
0.0 0.0% 100.0%
0.0 0.0% 100.0%
0.0 0.0% 100.0%
0.0 0.0% 100.0%
0.0 0.0% 100.0%
0.0 0.0% 100.0%
1.0 1.0% 99.0%
4.7 4.7% 95.3%
21.4 21.4% 78.6%
35.9 35.9% 64.1%
54.4 54.4% 45.6%
61.1 61.1% 38.9%
---
]Coarse Medium Fine
Sand Sand Sand
"I~
... ~ ,\
"' ~ z 50% w ---r--------r----___ , ___ tt+,-+ ·-~ r--------
0 40% 0:: w ll. 30%
20% ------f--· ----H-tt-j-i--r--f----+----t+I
10% ·-~ -~-~--·-+t+jH-+--t -~ ~t--~-~
Grinding Test 3A
Wt. Retained %
% Finer (grams) Retained
100.0% 0.0 0.0%
100.0% 0.0 0.0%
100.0% 0.0 0.0%
100.0% 0.0 0.0%
100.0% 0.0 0.0%
100.0% 0.0 0.0%
100.0% 0.0 0.0%
100.0% 0.0 0.0%
100.0% 0.0 0.0%
98.3% 2.4 2.4%
94.0% 8.1 8.1%
77.4% 26.2 26.2%
64.5% 41.0 41.0%
47.5% 56.6 56.6%
41.2% 62.5 62.5%
---
Grinding Test 4A
vvt. Ketamea .,,
(grams) Retained
0.0 0.0%
0.0 0.0%
0.0 0.0%
0.0 0.0%
0.0 0.0%
0.0 0.0%
0.0 0.0%
0.0 0.0%
0.0 0.0%
2.7 2.7%
7.6 7.6%
26.2 26.2%
38.7 38.7%
57.3 57.3%
65.4 65.4%
--
Silt
----I------------·----
~
~
~---
-~ -f----~
0%
1000 100 10 0.1 0.01
GRAIN DIAMETER (MM)
Grinding Test 38
Wt. Retained %
% Finer (grams) Retained % Finer
100.0% 0.0 0.0% 100.0%
100.0% 0.0 0.0% 100.0%
100.0% 0.0 0.0% 100.0%
100.0% 0.0 0.0% 100.0%
100.0% 0.0 0.0% 100.0%
100.0% 0.0 0.0% 100.0%
100.0% 0.0 0.0% 100.0%
100.0% 0.0 0.0% 100.0%
100.0% 0.0 0.0% 100.0%
97.6% 1.9 1.9% 98.1%
91.9% 6.9 6.9% 93.1%
73.8% 27.9 27.9% 72.1%
59.0% 43.9 43.9% 56.1%
43.4% 57.4 57.4% 42.6%
37.5% 61.9 61.9% 38.1%
----
Grinding Test 48
vvt. Ketamea "lo
% Finer (grams) Retained % Finer
100.0% 0.0 0.0% 100.0%
100.0% 0.0 0.0% 100.0%
100.0% 0.0 0.0% 100.0%
100.0% 0.0 0.0% 100.0%
100.0% 0.0 0.0% 100.0%
100.0% 0.0 0.0% 100.0%
100.0% 0.0 0.0% 100.0%
100.0% 0.0 0.0% 100.0%
100.0% 0.0 0.0% 100.0%
97.3% 2.7 2.7% 97.3%
92.4% 7.3 7.3% 92.7%
73.8% 25.9 25.9% 74.1%
61.3% 39.2 39.2% 60.8%
42.7% 58.3 58.3% 41.7%
34.6% 64.6 64.6% 35.4% ----
Clay Average
Med Sand 6.4%
Fine Sand 49.1%
Silt 44.4%
0.001
5/1212007
Soil
med sand
fine sand
silt
silty clay
average
geomean
Soil
SM (LS)
SM (LFS)
SM (SL)
SM (FSL)
ML (L)
ML (Sil)
SC (SCL)
averaqe
geomean
Notes:
Table 2
Tailings Parameters
Permeability(1> Drainable Porosity(2>
(cm/sec) (vol./vol.)
2.00E-02 0.35
1.00E-02 0.29
1.00E-04 0.14
6.00E-07 0.11
7.53E-03 0.22
3.31E-04 0.20
Permeability(3l Drainable Porosity(3l
(cm/sec) (vol./vol.)
1.70E-03 0.332
1.00E-03 0.326
7.20E-04 0.263
5.20E-04 0.251
3.70E-04 0.231
1.90E-04 0.217
1.20E-04 0.154
6.60E-04 0.253
4.74E-04 0.246
(1) Source -"Seepage, Drainage, and Flow Nets", Cedergren, H. R.,
1989.
(2) Source -The Hydrologic Evaluation of Landfill Performance
(HELP) Model, Version 3, EPA, 1994 -Figure 2 -Soil texture vs.
Moisture Retention.
(3) Source -The Hydrologic Evaluation of Landfill Performance
(HELP) Model, Version 3, EPA, 1994 -Table 1 -Low Density Soil
Characteristics.
Permeability Permeability Drainage Thickness Path Length (cm/sec) (Wmin) lft.1 (VF)
3.31E-04 6.51E-04 46.3 39
3.31E-04 6.51E-04 45.8 38
3.31 E-04 6.51E-04 45.4 37
3.31 E-04 6.51E-04 45.0 36
3.31 E-04 6.51E-04 44.6 35
3.31E-04 6.51E-04 44.2 34
3.31E-04 6.51E-04 43.8 33
3.31E-04 6.51 E-04 43.5 32
3.31E-04 6.51E-04 43.2 31
3.31 E-04 6.51E-04 43.0 30
3.31 E-04 6.51E-04 42.8 29
3.31E-04 6.51E-04 42.6 28
3.31E-04 6.51E-04 42.4 27
3.31E-04 6.51E-04 42.3 26
3.31 E-04 6.51E-04 42.2 25
3.31 E-04 6.51E-04 42.1 24
3.31E-04 6.51E-04 42.1 23
3.31E-04 6.51E-04 42.1 22
3.31 E-04 6.51E-04 42.1 21
3.31E-04 6.51E-04 42.2 20
3.31E-04 6.51E-04 42.3 19
3.31E-04 6.51E-04 42.5 18
3.31E-04 6.51E-04 42.6 17
3.31E-04 6.51E-04 42.8 16
3.31 E-04 6.51E-04 43.1 15
3.31 E-04 6.51E-04 43.3 14
3.31 E-04 6.51E-04 43.6 13
3.31E-04 6.51E-04 44.0 12
3.31 E-04 6.51E-04 44.3 11
3.31 E-04 6.51E-04 44.7 10
3.31 E-04 6.51E-04 45.1 9
3.31 E-04 6.51E-04 45.6 8
3.31 E-04 6.51E-04 46.0 7
3.31E-04 6.51E-04 46.5 6
3.31E-04 6.51E-04 47.1 5
3.31 E-04 6.51E-04 47.6 4
3.31E-04 6.51E-04 48.2 3
3.31 E-04 6.51 E-04 48.8 2
3.31 E-04 6.51E-04 49.4 1
Averaae Soil Porositv 0.22
Geomean Soil Permeability 3.31E-04 cm/sec
Distance Between Drains 50 ft
Thickness of Unit 1 ft
Maximum Depth 39 ft
Lenath of Strip Drain 27,550 ft
Slimes Drain Drainage.051107 .xis
TABLE 3
White Mesa Mill
Cell 4A Slimes Drain
ax1mum IOUI eo· M L" "d D th
Volume of Time to
Q (cfm/ft) Liquid Dewater
ICF/ftl lminNF/ftl
6.40E-04 11 17,185
6.31E-04 11 17,446
6.19E-04 11 17,761
6.08E-04 11 18,094
5.96E-04 11 18,446
5.85E-04 11 18,818
5.73E-04 11 19,213
5.59E-04 11 19,677
5.45E-04 11 20,172
5.30E-04 11 20,748
5.15E-04 11 21,363
4.99E-04 11 22,023
4.84E-04 11 22,731
4.67E-04 11 23,550
4.50E-04 11 24,434
4.33E-04 11 25,392
4.15E-04 11 26,496
3.97E-04 11 27,700
3.79E-04 11 29,019
3.60E-04 11 30,543
3.41 E-04 11 32,226
3.22E-04 11 34,178
3.03E-04 11 36,273
2.84E-04 11 38,721
2.64E-04 11 41,592
2.46E-04 11 44,770
2.27E-04 11 48,548
2.07E-04 11 53,076
1.89E-04 11 58,296
1.70E-04 11 64,704
1.52E-04 11 72,537
1.33E-04 11 82,509
1.16E-04 11 95, 123
9.81E-05 11 112,183
8.07E-05 11 136,357
6.39E-05 11 172,255
4.73E-05 11 232,569
3.11E-05 11 353, 196
1.54E-05 11 715,076
days
years
Time to Total Flow Volume Removed Pipe
Dewater Limitation
ldavsNF/ftl Rate (gpm) (gal) ldavsl
11.93 131.92 2,266,966 2.17
12.12 129.94 2,266,966 1.98
12.33 127.63 2,266,966 1.77
12.57 125.29 2,266,966 1.53
12.81 122.90 2,266,966 1.29
13.07 120.47 2,266,966 1.03
13.34 117.99 2,266,966 0.76
13.66 115.21 2,266,966 0.44
14.01 112.38 2,266,966 0.09
14.41 109.26 2,266,966
14.84 106.11 2,266,966
15.29 102.94 2,266,966
15.79 99.73 2,266,966
16.35 96.26 2,266,966
16.97 92.78 2,266,966
17.63 89.28 2,266,966
18.40 85.56 2,266,966
19.24 81.84 2,266,966
20.15 78.12 2,266,966
21.21 74.22 2,266,966
22.38 70.34 2,266,966
23.73 66.33 2,266,966
25.19 62.50 2,266,966
26.89 58.55 2,266,966
28.88 54.50 2,266,966
31.09 50.64 2,266,966
33.71 46.70 2,266,966
36.86 42.71 2,266,966
40.48 38.89 2,266,966
44.93 35.04 2,266,966
50.37 31.25 2,266,966
57.30 27.48 2,266,966
66.06 23.83 2,266,966
77.90 20.21 2,266,966
94.69 16.63 2,266,966
119.62 13.16 2,266,966
161.51 9.75 2,266,966
245.27 6.42 2,266,966
496.58 3.17 2,266,966
1,989.58 88,411,655 11.06
5.45
5/12/2007
Permeability Permeability Drainage Thickness
(cm/sec) (ft/min) Path Length (VF) (ft.)
3.31E-04 6.51 E-04 39.8 31
3.31E-04 6.51E-04 39.6 30
3.31E-04 6.51E-04 39.4 29
3.31E-04 6.51E-04 39.2 28
3.31E-04 6.51 E-04 39.1 27
3.31 E-04 6.51 E-04 39.0 26
3.31E-04 6.51 E-04 38.9 25
3.31E-04 6.51E-04 38.9 24
3.31E-04 6.51E-04 39.0 23
3.31 E-04 6.51E-04 39.0 22
3.31 E-04 6.51E-04 39.2 21
3.31E-04 6.51E-04 39.3 20
3.31E-04 6.51E-04 39.5 19
3.31E-04 6.51E-04 39.8 18
3.31E-04 6.51E-04 40.1 17
3.31E-04 6.51E-04 40.4 16
3.31 E-04 6.51E-04 40.8 15
3.31 E-04 6.51E-04 41.2 14
3.31 E-04 6.51E-04 41.6 13
3.31 E-04 6.51 E-04 42.1 12
3.31E-04 6.51E-04 42.6 11
3.31 E-04 6.51 E-04 43.1 10
3.31 E-04 6.51E-04 43.7 9
3.31 E-04 6.51E-04 44.3 8
3.31 E-04 6.51 E-04 44.9 7
3.31 E-04 6.51E-04 45.6 6
3.31E-04 6.51E-04 46.2 5
3.31E-04 6.51E-04 46.9 4
3.31E-04 6.51E-04 47.7 3
3.31 E-04 6.51E-04 48.4 2
3.31 E-04 6.51E-04 49.2 1
AveraQe Soil Porosity 0.22
Geomean Soil Permeability 3.31E-04 cm/sec
Distance Between Drains 50 ft
Thickness of Unit 1 ft
Maximum Depth 31 ft
LenQth of Strip Drain 27,550 ft
Slimes Drain Drainage. 051107 .xis
TABLE 4
White Mesa Mill
Cell 4A Slimes Drain
veraae 1au1 ept A L" "d D h
Volume of
Q (cfm/ft) Liquid
lCF/ft)
5.92E-04 11
5.76E-04 11
5.59E-04 11
5.43E-04 11
5.25E-04 11
5.07E-04 11
4.88E-04 11
4.69E-04 11
4.48E-04 11
4.29E-04 11
4.07E-04 11
3.87E-04 11
3.66E-04 11
3.44E-04 11
3.22E-04 11
3.01E-04 11
2.79E-04 11
2.58E-04 11
2.37E-04 11
2.17E-04 11
1.96E-04 11
1.76E-04 11
1.57E-04 11
1.37E-04 11
1.18E-04 11
1.00E-04 11
8.22E-05 11
6.48E-05 11
4.78E-05 11
3.14E-05 11
1.54E-05 11
Time to
Dewater
lminNF/ft)
18,584
19,107
19,666
20,265
20,962
21,713
22,523
23,462
24,545
25,661
27,020
28,444
30,093
32,006
34,145
36,550
39,373
42,599
46,321
50,784
56,059
62,388
70,285
80,157
92,848
110,012
133,751
169,722
230, 156
350,301
712,181
days
years
Time to Total Flow Volume Removed Dewater Rate (gpm) (gal) (davsNF/ft\
12.91 121.98 2,266,966
13.27 118.64 2,266,966
13.66 115.27 2,266,966
. 14.07 111.86 2,266,966
14.56 108.14 2,266,966
15.08 104.41 2,266,966
15.64 100.65 2,266,966
16.29 96.62 2,266,966
17.05 92.36 2,266,966
17.82 88.34 2,266,966
18.76 83.90 2,266,966
19.75 79.70 2,266,966
20.90 75.33 2,266,966
22.23 70.83 2,266,966
23.71 66.39 2,266,966
25.38 62.02 2,266,966
27.34 57.58 2,266,966
29.58 53.22 2,266,966
32.17 48.94 2,266,966
35.27 44.64 2,266,966
38.93 40.44 2,266,966
43.33 36.34 2,266,966
48.81 32.25 2,266,966
55.66 28.28 2,266,966
64.48 24.42 2,266,966
76.40 20.61 2,266,966
92.88 16.95 2,266,966
117.86 13.36 2,266,966
159.83 9.85 2,266,966
243.26 6.47 2,266,966
494.57 3.18 2,266,966
1,841.45 70,275,931
5.05
5/12/2007
Permeability Permeability Drainage Thickness Path Length (cm/sec) (ft/min) (ft.} (VF)
3.31 E-04 6.51E-04 34.0 23
3.31 E-04 6.51E-04 34.1 22
3.31 E-04 6.51E-04 34.3 21
3.31 E-04 6.51E-04 34.6 20
3.31E-04 6.51E-04 35.0 19
3.31 E-04 6.51E-04 35.4 18
3.31 E-04 6.51E-04 35.8 17
3.31 E-04 6.51E-04 36.3 16
3.31E-04 6.51E-04 36.9 15
3.31E-04 6.51E-04 37.5 14
3.31 E-04 6.51E-04 38.2 13
3.31 E-04 6.51E-04 38.9 12
3.31 E-04 6.51E-04 39.6 11
3.31 E-04 6.51E-04 40.4 10
3.31 E-04 6.51E-04 41.2 9
3.31E-04 6.51E-04 42.1 8
3.31E-04 6.51E-04 43.0 7
3.31 E-04 6.51E-04 43.9 6
3.31 E-04 6.51E-04 44.8 5
3.31 E-04 6.51E-04 45.8 4
3.31E-04 6.51E-04 46.8 3
3.31E-04 6.51E-04 47.9 2
3.31 E-04 6.51E-04 48.9 1
Average Soil Porosity 0.22
Geomean Soil Permeability 3.31 E-04 cm/sec
Distance Between Drains 50 ft
Thickness of Unit 1 ft
Maximum Depth 23 ft
Length of Strip Drain 27,550 ft
Slimes Drain Drainage.051107.xls
TABLE 5
White Mesa Mill
Cell 4A Slimes Drain
Minimum Liquid Depth
Volume of
Q (cfm/ft) Liquid
Time to
Dewater
lCF/ftl (minNF/ftl
5.14E-04 11 21,398
4.90E-04 11 22,437
4.65E-04 11 23,643
4.39E-04 11 25,042
4.13E-04 11 26,665
3.86E-04 11 28,468
3.61E-04 11 30,483
3.35E-04 11 32,841
3.09E-04 11 35,609
2.84E-04 11 38,773
2.59E-04 11 42,535
2.34E-04 11 46,924
2.11E-04 11 52, 111
1.88E-04 11 58,480
1.66E-04 11 66,264
1.44E-04 11 76, 176
1.24E-04 11 88,919
1.04E-04 11 105,910
8.48E-05 11 129,698
6.64E-05 11 165,741
4.87E-05 11 225,814
3.17E-05 11 346,682
1.55E-05 11 707,839
days
years
Time to Total Flow Volume Removed Dewater
(davsNF/ftl Rate (gpm) (gal)
14.86 105.94 2,266,966
15.58 101.04 2,266,966
16.42 95.88 2,266,966
17.39 90.53 2,266,966
18.52 85.02 2,266,966
19.77 79.63 2,266,966
21.17 74.37 2,266,966
22.81 69.03 2,266,966
24.73 63.66 2,266,966
26.93 58.47 2,266,966
29.54 53.30 2,266,966
32.59 48.31 2,266,966
36.19 43.50 2,266,966
40.61 38.76 2,266,966
46.02 34.21 2,266,966
52.90 29.76 2,266,966
61.75 25.49 2,266,966
73.55 21.40 2,266,966
90.07 17.48 2,266,966
115.10 13.68 2,266,966
156.81 10.04 2,266,966
240.75 6.54 2,266,966
491.55 3.20 2,266,966
1,665.59 52,140,207
4.56
5/12/2007
....iii.. GEOSYNTEC CONSULTANTS
SLIMES DRAIN LAYOUT
CELL 4A
BLANDING, UTAH
200 100 0 200
SCALE IN FEET
FIGURE NO.
PROJECT NO. SC0349
DATE: MARCH 2007
Page_j__of_
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COLORADO SCHOOL OF MINES RESEARCH INSTITUTE A-1
EXHIBIT 1
SAMPLE DESCRIPTION AND PREPARATION
CSMRI Sample 1
Sponsor's Designation of
Sample: Run-of-mine.
Date Received at Institute: June 5, 19 78.
Sample Weight:
Sample Container:
Sample Description:
Method of Preparation:
100, 520 lb.
Two truckloads •
Mine ore --estimate 5% +10-in. material.
Largest boulder - -48 in. x 24 in. x 14 in.
Only two or three rocks were greater than
36 in.
All +10-in. material broken to -10 in. by sledge-
hammer and jackhammer. The sample was
screened at 6 in. and 1-1/2 in. with the +6 in.
fraction, put in barrels, and the -1/2 in. frac-
tion piled. The -6 in. +1-1/2 in. material was
screened at 4 in. and 1-1/2 in. with the -6 in.
+4 in. and -4 in. +1-1/2 in. fractions barreled.
The additional -1-1/2 in. fraction was piled
with the previous -1-1 /2 in. fraction. A screen
size analysis of the entire quantity of mill feed
material is presented in Exhibit 3. A summary
screen size analysis of the ore is as follows:
Screen Product
in.
Head (calculated)
-10 +6
-6 +4
-4 +1-1/2
-1-1/2
Weight
%
100.00
2. 92
9.48
15.30
72. 30
· 1
u
·1
.. i
J
j
·1 ' .
. J
.. I
J
COLORADO SCHOOL OF MINES RESEARCH INSTITUTE
EXHIBIT 1
CSMRI Sample 2
Sponsor's Designation of
Sample: Crushed ore.
Date Received at Institute: June 5, 1978.
Sample Weight:
Sample Container:
Sample Description:
Method of Preparation:
47, 380 lb.
One truckload.
Ore previously crushed to -3 in., maximum
particles approximately 2-1/2 in.
The ore was used as received.
A-2
'·--'
Grinding Test 1, Autogenous
Mill-
Bearing
Running -Disc Meter Oil
Clock Time Revolutions Reading Temp.
~ ~ sec/rev watt-hr __ 'F __
0910 104
0915 5 lZ.Z lZ,964
1005 55 8. 7
1030 80 6.8 105
1100 llO 6.5 lZ, 977 106
1135 145
ll4Z 145
1150 153 6.Z 109
IZ30 193 6.0 IZ,988 l!l
!300 ZZ3 6.Z IIZ
1345 Z38
1400 Z53 6.4 l!Z
1415 Z68 6.3 13, 004 l!Z
Average
EXHIBIT Z
GRINDING TESTS
Date:
Feed Rate, stph:
Ore:
DSM Scree a, in. width:
DSM Screen Opening, mm:
Measured Mill Power Tare {empty mill), kw:
.June 13, 1978 z
Run-of-mine
!Z
l.Z7
Z.06
Corrected Mill Power Tare (empty mill), kw: 0.6
Ore Feed Rate {as received}(!) Mill Sweco Screen DSM Screen DSM Screen
-4 in .. -6 ia. -10 in. Discharge Oversize Overflow Underflow
-1-1/Z in. +l-1/Z in. +4 in. +6 in. Solids Solids Solids Solids Solids Solids Solids Solids
~ lb/hr lb/hr lb/hr _L lb/hr _L lb/hr _L lb/hr _L~
3, 150 61Z 380 116 63 8,335 z. 6-1(,CZ) Z,880 61Z 380 116 6Z 90 506 60 3,348 57
Z,835 6!Z 380 116 69 90 304 70 3, 591 58 noC2>
Z,993 61Z 380 116 66 69 4,ZZ3 58 679(Z)
Z,993 61Z 380 !!6 69 1Z,4ZO 90 l, 114 70 5,544 56 z, 583
Z, 903 6IZ 380 !!6 64 10,829 90 405 69 6, 955 60 4,388
3, 319 6!Z 380 116 65 ll,Z3Z 90 365 70 6,048 60 3, 861
3, 1Z8 6IZ 380 116 65 11, 700 90 !ZZ 69 3,ZZ9 60 3, 996
.Ll.1Q. 6IZ 380 ill £2. 9.945 .2l1. _fil .n. 3, 515 ll Z,907
3, 019 61Z 380 116 65 10, 744 90 480 69 4,557 59 3,547
Mill
Mill Water Load
Meter Rate Volume
_%_ lb/hr -"'-'-Rernarks
Start mill.
90 z, 858
90 Z, 858
90 Z, 858
80 Z,540
Mill down, elevator plugged.
Start mill.
75 Z,38Z
81 Z,57Z
Pump plugged. DSM feed ..
80 Z,540 Sample
12. Z,509 15 Sample.
83 Z,640
(1) Moisture: -1-1/Z in., z. 8%;: -4 in. +1-1/2 in., I. 0%; -6 in. +4 in., O. 8o/o; -10 in. +6 in., 0. 7%. Average dry ore feed rate: -1-1/Z in., Z, 934. 5 lb/hr; -4 in. +1-1/Z in., 605. 9 lb/hr; -6 in. +4 in.,
376.8 lb/hr; -10 in. +6 in .. , 115.0 lb/hr; total, 4,03Z.Z lb/hr, Z.016 dry stph. Mill volume end of test: IS'fo.
{2) Excluded from average.
Feed Rate, stph dry: Z.016
Ball Charge; None
Corrected Mill Power Tare (empty mill). kw: O. 6
Instantaneous Instantaneous Corrected Power Circulating
Running Diac Gross Power Fower Consum;etion Load
Clock Time Revolutions (meter reading) (from input-output curve) Gross Net Weight%
Time ~ sec/rev kw hr kw hr kwhr/st kwhr/st of Feed(!)
0910
0915 lZ.Z 4.Z5 Z.64 1.31 1.01
1005 55 8.7 5.96 4.Z5 2.11 1.81
1030 80 6.8 7.62 5.80 Z.88 Z.58
llOO 110 6.5 7.97 6.10 3,03 z. 73
1135 145
!!50 153 6.2 8.36 6.47 3.21 z.91(2) 162.0
1230 193 6.0 8.64 6.73 3.34 3.04(2) 183.0
1300 ZZ3 6.2 8.36 6.47 3.Zl z.91(Z) 145.0
1345 238
1400(3) Z53 6.4 8, !0 6.23 Z.09 Z. 79(Z) 79.0
1415(3) Z68 6.3 8.Z3 6.35 3.15 z.8sCZl 100.0
Average Z,90 !33.8
(1) Calculated: Swn of Sweco oversize and DSM oversize as percentage of dry mill feed.
(2) Average for power (last five readings): Z.90 kwhr/st.
(3) Sam.ple run.
Mill
Discharge
Solids
!. Rem.arks
63
6Z
69
66
Unplug bucket elevator.
69
64
65
Unplug DSM feed pump.
65
65
n 0 ;;
"' > " 0
~ n x 0 0
~
" z m ~
"' m ~ m > "' g
: l
~ .J.
~; ..
:..l
•t.
.; ·.1
I ;... f
COLORADO SCHOOL OF MINES RESEARCH INSTITUTE A-4
EXHIBIT 2
Grinding Test 1 --continued
Procedure: Sam.ple was wet screened on a 325M screen, products dried,
and the +325M material dry screened using a Ro-Tap for 30
min.
Test Product
Sam.ple Time:
Sample Weight, g:
Screen Product
(Tyler) Mesh
Head (calculated)
+28
-28 +35
-35 +65
-65 +100
-100 +200
-200 +325
-325
Screen Size Analysis
DSM Screen
Undersize
1415
4,630.5
Weight
%
100.0
1.2
3.4
16.2
14. 0
18.6
7.1
39.5
No. 1.t:'
No, 4D
No .. ro
No. 100
No. i.oo
No. '!i.6
,.
1-.-....
EXHIBIT Z
Grinding Test Z
Date:
Feed Rate, stph:
Ore:
Ball Charge:
-1-1/Z in. +l in. Balls, lb:
-Zin. +l-1/Z in. Balls, lb:
3 in. Balls, lb:
DSM Screen, in. width:
DSM Screen Openings, mn:i:
Measured Mill Power Tare (empty mill), kw:
Corrected Mill Power Tare {empty mill), kw:
Mill-
Bearing Ore Feed Rate {as received!( 1) Mill
Running Disc Meter Oil 4ln. -6 in. -10 in. Discharse
Clock Time Revolutions Reading Temp. -1-1/Z in. +1-1/Z in. +4 in. +6 in. Solids Solids
Time ~ sec/rev ~ __ •F __ lb/hr lb/hr lb/hr lb/hr ---1!.._ lb/hr
1040 0 8.7 !OZ 61Z 380 116
1110 30 5.Z 104 612 380 116
1130 50 5.3 106 3,060 612 380 116 62 8, 147
!ZOO 80 5.0 108 Z,846 612 380 116 63 6; 577
1230 110 4.8 13, 023 111 3,105 612 380 116 64 8,467
1300 140 4.8 112 3, 139 612 380 ll6 63 6,917
1330 170 4.8 113 3,263 612. 380 116 66 8,494
1400 zoo 4.9 113 2, 981 612 380 116 66 9,029
1415 215 5.0 113 Z,869 612 380 116 66 10, 098
1430 230 5.0 13, 044 113 Z,993 612 380 .ill. ~ 8,483
Average 3,032 612. 380 116 65 8,277
June 14, 1978 z.o
Run-of-mine
Total: 301.8 lb; Z"/o mill volume
114.5
151.3
36.0
lZ
l.Z7
Z.06
0.6
Sweco Screen DSM Screen DSM Screen
Oversize Overflow Underflow
Solids Solids Solids Solids Solids Solids
_L lb/hr ---1!.._ lb/hr __'.&__ lb/hr
. ·1 :...-..->
Mill
Water
Meter Rate
---1!.._ lb/hr
95 3,017
83 z, 636
50 248 74 1, 565 54 Z, 989(Z) 84 Z,668
67 653 71 1, 150 82 Z,604
64 605 73 1, Z.81 82 2.,604
62. 391 73 2., 102 57 3,694 81 2, 572.
63 595 69 3,571 56 3,881 81 z, 572.
64 624 71 2,939 58 3,680 81 2., 572.
64 547 70 3, 119 58 3,811 79 Z,509
.§1. 557 11. 3,2.59 57 3,565 79 Z,509
6Z 528 72. Z,373 57 3, 726 83 Z,6Z6
. ··1 .___.;
Mill
Load
Volume
~
9
Remarks
Start mill.
Sample.
Sample.
End of test.
(1) Moisture: -1-1/Z in., Z.8%; -4 in. +1-1/2. in., l.O"/o: -6 in. +4 in., 0.8"/o: -10 in. +6 in., 0.7'/o. Average dry ore feed rate: -1-1/Z in., Z,947.0 lb/hr; -4 in. +l-1/Z in., 605.9 lb/hr:
-6 in. +4 in., 376.8 lb/hr; -10 in. +6 in., 115.0 lb/hr; total: 4,044. 7 lb/hr, Z.OZZ dry stph. Mill volume end of test: 9%.
(Z) Excluded from average.
Feed Rate, stph dry:
Ball Charge:
Corrected Mill Power Tare (empty mill), kw:
z.ozz
301.8 lb, Z.% mill volum.e
o.6
Instantaneous Instantaneous Corrected Power Circulating
Running Disc Gross Power Power ConsumEtion Load
Clock Time Revolutions (meter reading) (fTom input-output curve) Gross Net Weight%
~ ~ sec[rev kw hr kw hr kwh/st kwh/st of Feed(l)
1040 0 8.7 5.96 4.ZZ Z.09 1. 79
1110 30 s.z. 9.97 7.93 3.9Z 3.63
1130 50 5.3 9.78 7. 78 3.85 3.55
1200 80 s.o 10.36 8.25 4.08 3.78
1230 110 4.8 10.80 8.63 4.Z7 3.97
1300 140 4.8 10.80 8.63 4.Z.7 3.97 59.0(4 )
1330 170 4.8 10.80 8.63 4.Z.7 3.97 95.0
1400 zoo 4.9 10.58 8.44 4.17 3.88 87.0
1415(3) Zl5 s.o 10.36 8.ZS 4.08 3. 75(2.) 9Z.O
1430(3) Z30 5.0 10.36 8.Z5 4.08 3. 78(Z) 93.0
Average 3.78 91.8
( 1) Calculated: Sum of Sweco oversize and DSM oversize as a percentage of dry mill feed.
(Z) Average for power (last two readings)': 3. 78 kwhr/st.
(3) Sample run.
(4) Omitted from average.
Mill
Discharge
Solids
%
6Z
63
64
63
66
66
66
65
" 0 r 0 ,,
> 0 0 .,
" :c 0 0 r
0 ,,
"' z m .,
"' m ., m > "' " :c
z .. -I ::; c ;;:
> I "'
,,
L...-·-----
r.---. ., . ._._.. ,. ' ----r -.,.._.~,..,
'--··
EXHIBIT 2
Grinding Test 2 - -continued
Procedure: Samples were wet screened on a 325M screen,
screened using a Ro-Tap for 30 min.
, .. -... .-.• ·-i , __ . . ·1 .__. -··· -o·.~·-~
~
products dried, and the +325M material dry
Screen Size Analysis
Sweco Screen DSM Screen DSM Screen Circulating
Test Product Mill Discharge Oversize Oversize Under size Load
Sample Time 1415 1430 1415 1430 1415 1430 1415 1430
Sample Weight, g: 1,058.8 1,206.6 669.3 979.0 915.6 1, 106.8 888.1 932.3
Screen Product Weight Weight Weight Weight Weight Weight Weight Weight Weight
~Tyler} Mesh % % % % % fa % % %
Head (calculated) 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0
+28 23.8 21.6 65.5 71.8 40.4 37.6 2.0 1. 7 43.4
-28 +35 6.8 6.4 2.5 1.6 8.4 9.9 5.3 4.3 8.1
-35 +65 13.5 13.3 4.2 3.6 8.8 12. 0 17.2 16.6 9.4
-65 +100 9.4 10.2 3.2 3.0 4.7 7.6 13.6 12. 9 5.7
-100 +200 11. 9 13.4 5.0 5.0 7.3 10.3 17.6 17.0 8.3
-200 +325 4.2 5.9 3.0 2.1 I. 6 4.7 7.0 6.3 3.1
-325 30.4 29.2 16.6 12.9 28.8 17.9 37.3 41.2 22.0
(')
0
I""
0
::0
~
0
0
(J)
(')
:i:
0
0 r
0
"Tl
:!: z
m
(J)
::0 m
(J) m
~
::0
(')
:i:
-z
(J)
-I
~ c
-I m
1.. .. --
Grinding Test 3
Mill-
Bearing
Running Disc Meter Oil
Clock Time Revolutions Reading Temp.
Time~ sec/rev ~--·F __
1050 0 5 .o 13, 045 93
1135 45 4.5
!ZOO 70 4.4 99
1207 77
1230 77
1300 107 4.9 109
1330 137 4.8 108
1400 167 4.9 110
1430 197 4.7 111
1445 ZlZ 4.8 13, 085 112
1500 Z4Z
Average
---·
EXHIBIT Z
Date:
Feed Rate, stph:
Ore:
Ball Charge:
-1-1/Z in. +l in. Balls, lb: -z io. +1-1/Z in. Balls, lb:
3 in. Balls, lb:
DSM Screen, in. width:
DSM Screen Openings, mm:
Measured Mill Power Tare (empty mill), kw:
Corrected Mill Power Tare (empty mill}, kw:
June 15, 1978
3.0
Run-of-mine
Total: 30 l. 8 lb, 20/o m.ill volume
114.5
151.3
36.0
lZ
l.Z7
Z.06
0.6
Ore Feed Rate {as received}(!) Mill SWeco Screen DSM Screen DSM Screen
-4 in. -6 in. -10 in. Discharge Oversize Overflow Underflow
-1-1/Z in. +1-1/Z in, +4 in. +6 in. Solids Solids Solids Solids Solids Solids Solids Solid8
Mill Water
Meter Rate
lb/hr lb/hr lb/hr lb/hr ~ lb/hr _%_ lb/hr _%_ lb/hr ~ lb/hr %(Z) lb/hr
918 570 174
918 570 174
4,350 918 570 174 65 13,631 68 857 70 6,237 58 5, 090 105 3,350
918 570 174
918 570 174
3,435 918 570 174 65 10, 530 63 808 73 3, 679 55 4,430 106 3,366
4,815 918 570 174 66 11,642 64 878 7Z 5,508 61 5,408 104 3, 303
4,Z75 918 570 174 67 11, 095 58 639 73 5,059 61 5,545 104 3, 303
4,590 918 570 174 67 II, 156 65 761 7Z 5,573 61 4,804 103 3,271
5,040 918 570 174 67 15, 135 67 1,010 71 6,646 6Z 5,69Z 104 3, 303
fil 570 .ill.
4,417 918 570 174 66 12, 198 64 826 7Z 5,450 60 5, 16Z 104 3, 316
' ___ . .,;
Mill
Load
Volume
__ %_,
ZS
Remarks
Start m.ill.
Shutdown, rock jammed in feeder.
Start mill.
Sample.
Sample.
Shut down ..
(1) Moisture: -1-1/2 in., 2.80/o; -4 io. +l-1/Z in., 1.0%; -6 in. +4 in., 0.8o/o, -10 in. +6 in., 0 .. 7%. Average dry ore feed rate: -1-1/Z in., 4,293.8 lb/hr, -4 in. +1-1/Z. in., 908.8 lb/hr; -6 in. +4 in., 565.4
lb/hr; -10 in. +6 in., l 7Z. 8 lb/hr; total, 5, 940. 8 lb/hr, 2. 970 dry stph. Mill volume end of test: 25%.
(2) Auxilliary water line used --measured twice, averaged, and added as percentage of regular water meter.
Feed Rate, stph dry:
Ball Charge:
Corrected Mill Power Tare (empty mill), kw:
Instantaneous Instantaneous Corrected
Z. 970 stph dry
301.8 lb, Z% of m..ill volwne
0.6
Power Circulating Mill
Running Disc Gross Power Power Consum;e:tion Load Discharge
Clock Time Revolutions (meter reading} (from input-output curve) Gross
~ ~ seclrev kw hr kwbr kwhr/st
1050 0 5. 0 10,36 8.Z6 Z.78
1135 45 4.5 11.52 9.24 3.11
!ZOO 70 4.4 11. 78 9.45 3.18
1207 77
1230 77
1300 107 4.9 10.58 8.43 2.84
1330 137 4.8 10. 80 8.6Z z.90
1400 167 4.9 10.58 8.43 Z.84
143o<3l 197 4.7 11. 03 8.82 Z.97
1445(3) ZIZ 4. 8 10. 80 8.6Z Z.90
1500 Z4Z
Average
{ l) Calculated: Sum of SWeco oversize and DSM oversize as a percentage of dry mill feed.
(Z) Average for power (last four readings): Z.. 70 kwhr/st.
(3) Sam..ple run.
(4) Omitted from average ..
Net Weight °lo Solids
kwhr/st of Feed(!) '.'b
Z.58
Z.91 11~:0<4l Z.98 65
Z.64(Z) 88. 0 65
z. 70 99.0 66
Z.64(2) 96.0 67
z.77(Z) 101.0 67
z. 7o(Z) 114.0 67
2.10 99.6
Rem.arks
Rock jammed io feeder.
n 0 r 0
"' > 0
0
~ n % 0 0 r
" z m " "' m .. m > "' n "'
r L..-
r•· ... ---...... ...___;
EXHIBIT 2
Grindi~g Test 3
Procedure: Samples were wet screened on a 325M screen,
screened using a Ro-Tap for 30 min.
r • ..... "' 1
;............, •.. 1
-J
products dried, and the +325M material dry
Screen Size Analysis
Sweco Screen DSM Screen DSM Screen Circulating
Test Product Mill Dischar~e Oversize Oversize Undersize Load
Sample Time 1430 1445 1430 1445 1430 1445 1430 1445
Sample Weight, g: 1,174.9 1,310.3 1,365.7 1,223.1 1, 183.4 1,245.5 850.1 962.4
Screen Product Weight Weight Weight Weight Weight Weight Weight Weight Weight
(Tyler) Mesh % % % % % % % % %
Head (calculated) 100.0 100.0 100.0 100.0 100. 0 100.0 100.0 100.0 100.0
+28 27.8 25.l 65.0 67.5 47.4 33.3 2.4 1. 9 43.7
-28 +35 6.5 7.1 1.8 2.0 9.1 7.9 5.7 5.0 7.6
-35 +65 12. 8 14. 6 3.7 4.0 12.4 13.2 18. 1 21.0 11. 7
-65 +100 9.2 9.0 3.1 3 .4 6.5 8.5 14. 8 16.0 7.0
-100 +zoo 11.4 13.5 5.4 5.5 8.9 9.9 15. 6 13. 5 8.9
-200 +325 4.8 3.4 3.4 3.3 1. 6 3.3 5.9 4.5 2.5
-325 27.5 27.3 17.6 14. 3 14.1 23.9 37.5 38.1 18.6
(")
0
' 0
:ti
)>
c
0
en
(") ::c
0
0
'
0
"Tl
s: z m en
:ti
m en m
)>
:ti
(")
::c
z en
-I
::::;
c
-I m
> I
00
r L __ L . .:.:::
Grinding Test 4
r ... ....__
Date:
Feed Rate. stph:
Ore:
... ,..,
EXHIBIT Z
June 16, 1978
z.s
Crushed
Ball Charge:
-1-1/Z io. +l io. Balls, lb:
Total: 301.8 lb, Z% mill volum.e
114.5
Clock
~
1010
1030
1100
1130
JZOO
IZIS
1Zl8
IZ30
!300
!3ZO
1330
1400
1415
1500
Average
Running
Time
~
zo
50
80
110
!ZS
1"'5
137
167
187
197
ZZ7
Z4Z
Z57
Disc
Revolutions
sec/rev
6.6
6.3
5.9
5.9
6.0
6.0
s. 8
5. 7
s. 7
Meter
Reading
watt-hr
!3, 094
13, lZ8
Mill-Bearing
Oil Temp.
•F
96
97
99
99
100
100
!OZ
104
104
-z in. +l-1/Z in. Ealls, lb:
3 in. Balls, lb:
DSM Screen, in. width:
DSM Screen Openings, rnm:
Measured Mill Power Tare (empty mill), kw:
Corrected Mill Power Tare (empty mill), kw:
Ore Feed Rate
(as received)(!)
-3 in.,
lb/hr
5, 130
5, 350
4,995
4, 770
5,4Z3
4,8Z6
4,635
6, 793
5,Z40
Mill Discharge
Solids Solids
__'.'&__ ..!2Ll:!..
63 7,598
6Z 8, 091
65 IZ,519
6Z 5,69Z
65 6, 786
65 6, 7Z8
64 6, 797
63 6, 010
64 7,5Z8
Sweco Screen
Oversize
Solids Solids
__'.'&__ lb/hr
67 36Z
64 418
66 535
6Z Z88
6Z 3Z6
65 449
6Z Z60
64 Z30
64 359
151. 3
36.o
IZ
l.Z7
z.06
0.6
DSM Screen
Overflow
Solids Solids
__'.'&__ lb/hr
74 1,931
7Z Z,398
70 3, 717
71 Z, 077
71 1, 885
69 Z,Z98
7Z l, 134
70 819
71 Z,03Z
(I) Moisture: -3 in., 4.3o/o. Average dry ore feed rate: -3 in., 5, 015 lb/hr, Z. 508 dry atph. Mill volume end oI test: 15%.
(Z) Auxilliary water line used --measured twice, averaged, and added as percentage of regular water rn.eter.
(3) 55-gal drum timed saxnple.
Feed Rate. etph: Z.508
DSM Screen
Underflow
Solids Solids
__'.'&__ lb/hr
61 5,Z43
60 4,48Z
61 3, 953
58 3,6Z8
60 4,4Z8
60 4, 316(3)
59 4,806
60 4,617
59 4,3Z8
60 4,4ZZ
Ball Charge: 301 .. 8 lb, Z"/o of mill volume
Corrected Mill Power Tare (empty mill), kw: 0.6
Instantaneous Instantaneous Co:rrected Power
Running Disc Gross Power Power Coasum.:etion
Clock Time Revolo.tions (meter reading) (from input-output curve} Gross Net
~ ~ sec/rev kwbr kwbr kwhr/st kwhr/st
1010
1030 zo 6.6 7.85 6.00 Z.39 Z.15
1100 50 6. 3 8.Z3 6.35 z. 53 Z.Z9
1130 80 5.9 8. 78 6.87 z. 74 Z.50
!ZOO 110 5.9 8. 78 6.87 Z.74 2.50
1Zl5 !ZS
IZ30 137 6.o 8.64 6. 73 Z.68 Z.44
1300 167 6.o 8.64 6. 73 Z.68 Z.44
1320 187
1330 197 5.8 8.93 7.00 z. 79 2.s5(ZJ
1400(3) ZZ7 5. 7 9.09 7 .13 Z.84 Z.6o(Z)
1415(3) Z42 5. 7 9.09 7.13 2.84 Z.60(2)
Average Z.58
(1) Calculated: Sum. of Sweco oversize and DSM oveTsize as a percentage of dry mill feed.
(2) Average for power (last three readings): Z .. 58 kwhr/at. (3) Sample run.
(4) Omitted from average.
Circulating
Load
Weight o/0
of Feed(I)
5o.ol4l
81.0<4l
48.0
39.0
54.0
Z9.0
~
36.8
Mill Water
Meter Rate ~ lb/hr
90 z, 858
87 z. 763
8Z Z,604
80 Z,540
80 Z, 540
80 Z,540
79 Z, 509
79 Z,509
79 Z,509
BZ Z,597
Mill
Discharge
Solids
_..1L_
63
6Z
65
Mill
Load
Volum.e
_%_
15
Remarks
Remarks
Start mill ..
Feed off (feed belt jazmned}.
Start mill ..
Sainple.
Saxnple.
Feed belt jammed ..
6Z
65
65
64
63
n
0 r 0 ~ > " 0
n x 0 0 r
~
" i ::: ,.
m p
> ,.
n x
r"" ... . . ............... ·-·-~-
, ___ _ , ___ _ ,____, "-·
EXHIBIT 2
Grinding Test 4 --continued
Procedure: Samples were wet screened on a 325M screen, products dried,
screened using a Ro-Tap for 30 min.
Screen Size Analysis
Sweco Screen DSM Screen
Test Product Mill Discharge Oversize Oversize
Sample Time 1140 1415 1400 1415 1400 1415
Sample Weight, g: 1, 139.4 886.7 715.4 726.2 1,152.9 1,020.0
Screen Product Weight Weight Weight Weight Weight Weight
{Tyler~ Mesh % % % % % %
Head (calculated) 100.0 100.0 100.0 100.0 100.0 100.0
+28 15.3 13. 1 86.5 91.8 39.1 43.1
-28 +35 5.8 5.2 0.3 0.3 8.9 7.6
-35 +65 17.8 17.9 0.9 0.5 14,.9 12. 7
-65 +100 11.1 11.8 0.7 0.3 6.8 6.3
-100 +zoo 15.8 16.7 1. 6 0.7 8.8 8.9
-200 +325 7.7 6.4 0.9 0.4 3.3 4.1
-325 26.5 28.9 9.1 6.0 18.2 17.3
and the +325M material dry
DSM Screen Circulating
Undersize Load
1400 1415
763.8 769.4
Weight Weight Weight
% % %
100.0 100.0 100.0
2.7 2.7 55.5
4.9 4.6 5.9
18.6 18.6 9.9
12. 5 13.3 4.7
18.6 19. 1 6.6
8.1 6.3 2.8
34.6 35.4 14.6
(')
0 r
0
:u
)> c
0
(II
(')
:r
0
0
r
0 ,,
== z m
(II
::u m
(II m
)>
::u
(')
:r
z
(II
-I
:::j
c
-I m
> I ....
0
Grinding Test 5
Running
Clock Time
~~
0840
0910
0930
1000
1030
1035
1040
1100
1130
1155
1200
1230
1300
1330
1345
1400
1430
1445
1500
1510
1513
1522
1529
1536
1537
Average
0
30
50
80
110
115
115
135
165
190
195
225
255
285
300
315
345
360
375
380
388
397
404
411
412
Disc
Revolutions
sec/rev
6.7
6.3
6.Z
6.5
6.5
6.6
6.7
6.7
6.6
6.3
6.5
6. l
6. l
6.0
5.7
f'·'· ..... ,,
~
Mill-
Bearing
Meter Oil
Reading Temp.
~ __ ._F __
13, 136
13, 184
90
91
92
91
94
96
97
100
103
104
104
104
105
106
107
EXHIBIT Z
Date:
Feed Rate, stph:
Ore:
June 19, 1978 z.o
Crushed
-..----·
Ball Charge:
-1-1/Z in. Balls, lb:
Total 301.8 lb, 2% mill volume
114. 5
-2 in. +1-1/2 in. Balls, lb: 151.3
3 in. Balls, lb: 36.0
DSM Screen,. in. width: 12
DSM Screen Openings, rw:n: 1.27
Measured Mill Power Tare (empty mill), kw: Z.06
Corrected Mill Power Tare (empty mill), kw: 0.6
Ore Feed Rate Mill Sweco Screen DSM Screen
(as received)(!) Discharge Oversize Overflow
-3 in. Solids Solids Solids Solids Solids Solids
---'l:::b-'-/h=r=------12_ lb/hr --12_ lb/hr --12_ lb/hr
3,623
3,960
3,803
4,230
4,298
4,320
3,533
4,016
4,005
3,645
4,005
4, 140
3, 713
4,028
3,690
3,934
67
66
56
66
66
63
62
66
68
63
64
63
62
63
64
8, 744
6,663
3,578
4,990
5,049
3,856
3,894
4,693
9,058
4, 139
4, 781
4,820
4, 018
4, 139
5, 173
48
45
15
38
42
37
27
29
34
32
34
33
38
36
35
356
324
68
182
239
zoo
101
111
173
134
143
193
182
151
183
67
70
70
75
72
75
73
70
68
71
n
69
71
70
71
3,558
2,079
347
346
729
405
394
851
3,672
250
238
598
423
1, 323
1,087
DSM Screen
Underflow
Solids Solids
J_ lb/hr
60
60
59
62
62
61
58
61
64
59
57
59
56
56
59
2,970
4,077
3,452
4,241
4, 101
3,870
3,445
3,870
3,744
3,452
3, 104
3,505
Z,696
Z,696
3,516
Mill Water
Mill
Load
Meter Rate Volume
J_ lb/hr __ 'li_o_
75
71
68
66
68
69
69
64
68
61
68
69
69
69
69
68
2,382
2,255
2, 159
2,096
2, 159
z. 191
z. 191
Z,032
2, 159
l,937
Z, 159
Z, 191
z. 191
Z, 191
z. 191
Z, 165
7
13
15
15
(1) Moisture: -3 in., 2.0o/o. Average dry ore feed rate: -3 in., 3,855 lb/hr, l.9Z8 dry stph. Millvolum.e end of test: 15%.
Rem.arks
Start mill.
Shut down --out of feed.
Start mill.
Sample.
Sample.
Sample.
Sample,
Shut down.
Collecting mill discharge sample.
Second barrel.
Third barrel.
Hopper went empty.
Shut down mill.
" 0 ..-0
" > 0
0 .. " "' 0 0 ..-
0
~
3: i m .. .. m ::: > " " "' i .. _, _,
c _,
m
EXHIBIT Z
~rinding Test S ...... continued
Feed Rate, atph {dry): I.9Z8
Ball Charge:
Corrected Mill Power Tare (empty mill}. kw:
301.8 lb, 2.% of mill charge
o.6
Running Disc
Clock Time Revolutions
~ ~ seclrev
0840 0
0910 30 6.7
0930 so 6.3
1000 80 6.Z
1030 110 6.s
1035 llS
llOO 13S 6.S
1130 165 6.6
USS 190
!ZOO 19S 6.7
12.30 zzs 6.7
1300 zss 6.6
1330 2.85 6.3
134s(3) 300 6.S
1400(3) 315 6.1
1430 34S 6.1
144s{3) 360 6.0
lsoo!3) 37S 5.7
1510 385
1513 388
lSZZ 397
15Z9 404
1536 411
1537 41Z
Average
Instantaneous
Gross Power
(meter reading)
kw hr
7. 73
8.Z3
8.36
7.97
7.97
7.BS
7. 73
7.73
7.85
8.2.3
7.97
8.50
a.so
8.64
9.09
Instantaneous
Corrected Power
(from input-output curve)
kwbr
5.89
6.35
6.47
6.10
6.10
6.oo
s. 89
S.89
6.oo
6.3S
6.10
6.60
6.60
6.73
7.13
Power
Consumption
Gross Net
kwhr/st kwhr/st
3.05 Z.74
3.Z9 Z.98
3.36 3.04
3.16 Z.85
3.16 Z.8S
3.11 Z.80
3.05 Z.74
3.0S Z.74
3.11 Z.80
3.2.9 Z.98
3.16 z.8s
3.42. 3. !l(Z)
3.42. 3.ll{Z)
3.49 3.18(2.)
3.70 3.37
3.13
(1) Calculated: Sum of Sweco oversize and DSM oversize as a percentage of dry mill feed.
(2.) Average for power (three readings, omitted reading at 1,500 from. a.verage): 3 .. 13 kwhr/st.
(3) Sample run.
(4) Omitted from average.
Circulating
Load
Weight%
of Feed{l)
1z.0!4l
Z3.0(4)
14.0
14.0
Z4.0
96.0(4)
11.0
10.0
19.0
!6.0
37_,0
18.0
Mill
Discharge
Solids
%
67
66
56
66
66
63
62.
66
68
63
64
63
62.
63
Procedure: Sam.pies were wet screened on a 325M screen, products dried, and the +3Z5M material dry screened using a Ro-Tap for 30 min.
Screen Size Anal sis
Sweco Screen DSM Screen
Test Product Mill Discharge Oversize Oversize
Sam.ple Time 1345 1400 144S lSOO 1345 1400 1445 1500 134S 1400 1445 lSOO
Sample Weight, g: l, oss. 6 1,062..l 911.3 8S9.l 442..S 300.3 Z8Z.z 381.8 1,065.9 713.S 478.8 9Z0.6
Sc re en Product Weight Weight Weight Weight Weight Weight Weight Weight Weight Weight Weight Weight
(Tyler) Mesh __ % _ _ %_ __ %_ __ % _ __L __L __L __L _ %_ _% _ _% _ _ % _
Head (calculated) 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0
+ZB 12..0 !1.5 10.z 10.8 78.4 82..9 81.4 87.5 67.0 S4.S 51.9 32.0
-28 +35 3.7 3.7 Z.7 Z.9 1.5 0.8 1.0 0.4 s.o 4.6 4.5 3.9
-3S +65 15.3 16.3 IZ.9 13.4 4.1 1.9 3.0 l. l 6.Z 7.4 6.9 10.9
-65 +100 12..3 13.4 lZ.8 12.. 7 Z.4 1.2 1.9 0.8 3.4 5.2 s.z 9.1
-100 +zoo 19.1 18.5 Zl.3 zo.6 4.I Z.7 3.7 1.6 S.3 8.Z 9.3 14.2
-ZOO t3ZS 8.0 6.6 9.0 8.6 1.1 1.0 1.1 l.Z I.6 Z.8 4.0 S.3
-325 Z9.6 30.0 31.l 31. 0 8.4 9.S 7.9 7.4 11.s 17.3 18.2 Z4.6
. _______ ;
Remarks
Ran out of ore.
Check mill volume.
0 0 ... 0
" ,.
" 0
" 0 :c
0
0 ... Check mill load level. ~ Start filling No. I mill discharge sa:mple barrel.
Start filling No .. Z mill discharge sample barrel .. " Start filling No. 3 mill discharge sample barrel,. z m
End filling No. 3 mill discharge sample barrel. ..
" End of test. m .. m ,.
" 0 :c
DSM Screen Circulating
Underflow Load
1345 1400 1445 1500
817.4 7S7.0 743.7 787.8
Weight Weight Weight Weight Weight
__L __ % _ __L __L _1L_
100.0 100.0 100.0 100.0 100.0
1.8 z.o 1.9 1.6 58.l
3.1 3.1 Z.8 Z.3 3.7
16.8 16.3 lS.8 14.Z 6.7
14. 7 14.6 14.2 14.S 4.8
Z0.5 20.5 21.7 Zl.8 8.o }>
8.1 8.4 7.4 7.4 Z.9 :..
35.0 35.I 36.2. 38.Z lS.8 "'
'---
Grinding Test 6
Mill-
Bearing
Running Disc Meter Oil
Clock Time Revolutions Reading Temp ..
Time ~ sec/rev watt-hr __ ._F __
0820
0925 0
0930 5 6.8 13, 195 82
1000 35 5.9 80
1030 65 5.3 82
llOO 95 5.Z 83
1135 130 5.Z 84
!ZOO 155 5.Z 87
IZ30 185 5.1 88
IZ45 zoo 5.1 88
1300 ZIS 5.0 89
1330 245 5.0 12,Z36 9Z
1337 zsz
Average
Date:
Feed Rate, stph:
Ore:
Ball Charge:
-1-1/2 in. +l in. Balls, lb:
-Z in. +l-1/Z in. Balls, lb:
3 in. Balls, lb:
DSM Screen, in. width:
DSM. Screen Openings, mm:
\"···········:
'----'
EXHlBIT 2
June 20, 1978
Z.5
Run-of-mine
Total: 301.8 lb, Z% mill volum.e
114.5
151.3
36.0
lZ
1.27
Measured Mill Power Tare {empty mill), kw: 2.06
Corrected Mill Power Tare (empty mill), kw: o.6
Ore Feed Rate {as received]( I) Sweco Screen DSM Screen
-4 in. -6 in. -IO in .. Mill Discharg:e Oversize Overflow
-1-1/2 in. +1-1/2 in. +4 in. ...6 in. Solids Solids Solids Solids Solids Solids
lb{!!r lb£hr lb£hr lb£hr _f,_ lb/hr _f,_ lb{hr _f,_ lb£hr
768 474 219
768 474 Zl9 66 11,286 60 66Z 71 4,090
3, 713 768 474 219 66 9, 742 54 535 68 4,896
3,825 768 474 Zl9 67 I0,49Z 60 608 68 4,651
3,510 768 474 219 66 7,960 59 597 68 3, 733
3, 758 768 474 Zl9 68 10, 588 57 487 68 4, 651
3,420 768 474 219 68 I0.037 55 545 69 3,974
3,420 768 474 Zl9 67 9,950 sz 714 68 4,ZZ3
3,600 768 474 Zl9 67 11, 759 62 781 68 6,487
768 474 Zl9 67 8,9Z4 60 1,337 68 4,039
3,607 768 474 Zl9 67 10,08Z 58 696 68 4,527
DSM Screen Mill
Underflow Mill Water Load
Solids Solids Meter Rate Volume
..JL_ lb£hr _f,_ .!M?.!: ___L_ Remarks
--(Grind out)--Start mill.
Start feed.,
80 Z,540
61 5, 737 85 2,699
61 3,486 84 2,668
61 4,255 85 2,699
61 4,255 84 Z,668 ZS
60 3,699 85 Z,699
60 4, 104 89 Z,8Z6
59 4,275 89 Z,8Z6 Sample.
6Z 3, 6Z7 85 Z,699 Sample.
60 3, 780 88 z. 795
Z7 Shut down.
61 4, 135 85 Z, 71Z
(!) Moisture: -1-1/2 in .. , Z.3%; -4 in. +1-1/Z in., 1.0%; -6 in. +4 in., 0.8%; -10 in. +6 in., 0.7o/o. Average dry ore feed rate; -1-1{2 in., 3,524 lb/hr; -4 in. +l-1/2 in., 760.3 lb/hr; -6 in. +4 in., 470.Z
lb/hr; -10 in. +6 in., Z!7.5 lb/hr; Total: 4, 972 lb{hr; Z.486 dry stph. Mill volume end of test: Z7%.
Feed Rate, stph (dry): Z.486
Ball Charge: 301.8 lb, 2 % of mill volum.e
Corrected Mill Power Tare (empty mill), kw: o.6
lnstantaoeous Instantaneous Corrected Power
Running Disc Gross Power Power Consum.:e:tion
Clock Time Revolutions (meter reading} (from input-output c.urve) Gross Net
~ ~ seclrev kw hr kwbr kwhr/st kwhr/st
08ZO
09Z5
0930 6.8 7.62 5.80 Z.33 Z.09
1000 35 5.9 8. 78 6.87 Z.76 2.5Z
1030 65 5.3 9. 78 7.78 3.13 Z.9Z
l!OO 95 5.2 9.97 7.9Z 3.18 Z.94
ll35 130 s.z 9.97 7.9Z 3.18 Z.94
1200 155 s.z 9.97 7.9Z 3.18 Z.94
1230 185 5.1 10.16 8.09 3.Z5 3.01
1z45(3) 200 5.1 10.16 8.09 3.Z5 3.01
1300(3) Z!S 5.0 10.36 8.26 3.3Z 3. 00<Zl
1330 Z45 4.0 10.36 8.26 3.3Z 3.o8!2J
1337 zsz
Average 3.08
(1) Calculated: Sum of Sweco oversize and DSM oversize as a percentage of dry mill feed.
(Z) Average :for power (two readings): 3.08 kwhr/st.
(3) Sample run.
Circulating
Load
Weight%
of Feed(l)
105.0
99.0
87.0
98.0
93.0
101.0
144.0
103.9
Mill
Discharge
Solids
% Remarks
Grind out.
Start feed.
66
66
67
66
68
68
67
67
67
End af test.
" 0 ... ~ > 0 0 .. " "' 0 0 r
0 ~
"' z m " ~ m " m > ~ n
"'
;,,,.-_ __ L___ -..... ,
;__.j ~ __ ,
EXHIBIT 2
Grinding Test 6 --continued
(")
0 Procedure: Samples were wet screened on a 325M screen, products dried, and the +325M material dry • 0 screened using a Ro-Tap for 30 min. :u
)>
0
Screen Size Analrsis 0
Sweco Screen DSM Screen DSM Screen Circulating cn
(")
Total Product Mill Dis char~e Oversize Oversize Undersize Load :I:
0
0 • Sample Time 1245 1300 1245 1300 1245 1300 1245 1300 0
Sample Weight, g: 1,258.8 1,237.7 673.8 642.6 1,361.9 1,079.3 832 .1 918.1 "Tl
~
Screen Product Weight Weight Weight Weight Weight Weight Weight Weight Weight z
m
(Tyler) Mesh % % % % % % % % % cn
:u m
Head (calculated) 100.0 100.0 100.0 en 100.0 100.0 100.0 100.0 100.0 100.0 m
)>
:u
+28 21.0 18.4 64.8 70.7 32.9 23.1 1.3 1.0 32.9 (")
:x:
-28 +35 6o4 6.5 1.9 1.2 9.4 8.5 3.9 3.7 8.1 -z
-35 +65 13.9 15.1 3.8 2.7 12.8 14.3 16.5 16. 7 12.2 en -I
-65 +100 10.5 11.4 3.2 z.z 8.8 8.6 12.4 14.5 8.0 :j
-100 +zoo 13 .3 14.2 5.4 5.0 11.8 14.2 20.3 18.5 12. 0 c
-I
-200 +325 5.5 5.6 3.1 2.2 4.8 3.7 5.3 6.7 4.1 m
-325 29.4 28.8 17.8 16.0 19.5 27.6 40.3 38.9 22.7
Sediment Description Page 1of10
Sediment Description and Classification Background
U.S. Standard Sieves
Note that the same size mesh can be a differing sieve number depending on the Sieve manufacturer
(Tyler vs. ASTM)
~i:~!~n~) II TYLER II ASTM-Ell II BS-410 II DIN-41881
I µm II Mesh II No. II Mesh II mm I
5 II 2500 2500 0.005
10 II 1250 1250 0.010
15 II 800 800 0.015
20 625 625 0.020
22 0.022
25 500 500 0.025
28 0.028
32 0.032
36 0.036
38 400 400 400
40 0.040
45 325 325 350 0.045
50 I 0.050
53 270 270 300
56 0.056
63 250 230 240 0.063
71 0.071
75 200 200 200
80 0.080
I 90 170 170 170 0.090
100 I 0.100
106 150 140 150
112 0.112
125 115 I 120 II 120 0.125 I
140 II II 0.140 I
150 100 II 100 II 100 I I
II II II II
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/Jr-rAa.f~61''T B, ~o
5/12/2007
Sediment Description Page 2of10
160 II 0.160
180 II 80 80 85 0.180
200 II 0.200
212 II 65 70 72 I
250 60 60 60 0.250
280 I 0.280
300 48 50 52
315 I 0.315
355 42 45 44 0.355
400 0.400
425 35 40 36 I
450 0.450 I
500 32 35 30 I 0.500 I
560 II 0.560 I
600 28 30 25 II I
630 II 0.630 I
710 24 I 25 22 II 0.710 I
I 800 II 0.800 I
850 20 20 18 II
900 I 0.900
1000 16 18 16 1.0
1120 1.12
1180 14 16 14
1250 I 1.25
1400 12 I 14 I 12 1.4 I
1600 II 1.6
1700 10 II 12 10
1800 II 1.8
2000 9 10 8 2.0
2240 2.24
2360 8 8 7
2500 I 2.5
2800 I 7 I 7 6 2.8
3150 3.15
3350 6 6 I 5
3550 3.55
4000 5 5 4 II 4.0
4500 I I II 4.5
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Sediment Description Page 3of10
11 11
4750 II 4 II 4 II 3.5 II
5000 II II II II 5.0 I I
Sediment Classification based on Grain Size:
Unified Soil Classification System (USCS)
!sediment Name llniameter (mm) Sieve No. I
!cobble I greater than 7 5 mm
!Gravel 4.75 to 75 mm 4 I
I sand 0.075 to 4.75 mm 200 I
!Fines (silt and clay) less than 0.075 mm
USCS Division of Sands
Sediment Diameter Range 1 Passes through Sieve Retained on Sieve
Name (mm) No. No.
!coarse Sand II 2.0 -4.8 II 4 II 10 I
!Medium Sand II 0.43 -2.0 II 10 II 40 I
!Fine Sand II 0.075 -0.43 II 40 II 200 I
http://www. geology. sdsu.edu/ classes/ geol5 52/ seddescription.htm 5/12/2007
Sediment Description
2·1nches
1 Inch
1
2 inch
3 --Inch 8
Number 4
Number 10
Number 200
Figure 4-3. Dry sieve analysis.
USCS Classification System
http://www. geology. sdsu.edu/ classes/ geol5 52/ seddescription.htm
Page 4of10
5112/2007
Sediment Description Page 5of10
UNIFJEO SOIL CLASS!FICA1ION SYSlEM
MAJOR DIVISIONS GROUP DE.SCRIP1IONS SYMBOLS
~g Wei I G1~<ic:led Grove Is,
L Clean (,rcve Is GW GravP.I -Sand Mixrur-e5,
Q Litile r 1 riEts 0 ~ (): or r;o
(j) > {.,) c > (l itt I e QI' Poo~ly Graded G~ovels, a:' \.Ii .... ·-a: no F" iriesi GP Grave I -Sar1d Mi xt ure5 t ·-.....J -O•-I/) w o+-V> L Iti le or r.o rines > IV 0 4 :::i:::C:.»t
0 oc Cc Si I ty i.n r,1 t.::t c;r av~ I s With GM Gn:)Ve IS,
_J Ooc) Gr-oveJ-Sond-Si It Mixtur-es -c ..c __ z Fines 00 I-+-
.. I') $0 lADDreoi ODI e 0 LO GC CI oyey Gr ave Is., 5~ .Q '.. i:-r n~s) Gr-ova 1·Sano-C1 oy t,H ><'t ur-es Z•--==l!J..
~o <!'. 1'" CJ Wei I Gr oaea Sands, a: a; (/) SW Gr'C!Ve I I y Sends, Oil'.. ').. Cl c I ('!()Ii SCr'KIS 0 L ii 11 e or no Fines w.J ow 1Jt: Lfl It-n:-(..) (l) .> <Liiile Or"' Poor I y Grodi:!!d $ond$, -o;t 0 '\j-~a:: no Fi r;esl SP Gravelly Sands, OI Vl -o·-u c::: 00... ;/) L l ti I~ or r,o F tr,es C z I GI <1; c,:"<t .r::. Ill co SM Silty Sorvd!:.1 r-04-.,, $and5 Wiih ..C+-0 r i roes Sar1d -Si ii Mi >'Tures (I) ,... oZ
I... 0 0 Q::-I... LAppr~c; i ab I~ ::i: 1..L... SC CloyAy Sor.ds. 0 r i ries> Sand -Clay MTJ:1ures. ::;:
I/) Jnorgo~io Si Its & Very r i r.e
>-T-0 ML Scna59 SI 11y or Clayey F"lne
<I.) ·<l Sonos, c. 1 oy€y s i 1 ts > -l ·-In Q; <;_I .:§-c ·-VI 'CJ -l 0 lnorgor. i o Cloys of Low iO c .r: CL \Ftg 0 'Cl t-Medium Plostlcity1
·-ill L~a11 Cloys ;::!N V) :::i ill
0,,1 )-.?:a: -l Organic $ t Ii s & Or"QQtiiC V1 <ii -...J _J
o~ ill OL Silty Clays of Low
l:;;!o P 1 as·r i <~ i, y
::: il..
'4. ';-J nor ga n i <::: $ i I r 5, a:_
<...') 0 v1 0 MH F"i r.e w::r: ,... I.() :S.ond or Silty Soi Is, .,.._ +-Elastic Si Its ZC ...J ·-c -o t..l Go w.. .c ·-.c
)-~ -lt-CH Inorgor.ro Clays of
<l) 0 UL High Plo~tioiiy, Foi Clay5 ··-(!) L 1/1 3-o 0 :1: I-
...J ·-CV Oq;ion l c GI crs. of Me<l i urn -_JI.. OH Vl ),..'.' io High P as-tlclty,
Orgcnio Si Ii s
Hign ly Or-{Janic Sol 1 s PT P8ot Ol>d Oi il(')r
Highly Organic Soi I 5
Visual logging of sediments entails estimating percentages of gravels, sands and fines (silt and clays).
Practice and the use of the Geotechnical Gage will increase your confidence and ability in visually
logging sediments.
Read: Visual Exam Test
http://www.geology.sdsu.edu/classes/geol552/seddescription.htm 5/12/2007
Sediment Description Page 6of10
Read: Field Identification Guidelines
Ultimately, sediment samples may undergo grain size analysis through sieves. Graphing the cumulative
weight percent retained/passing by sieve no. or grain size will result in the sediment grain-size
distribution curve. The grain-size distribution curve is used to quantitatively classify the sediment type
(your visual identification is a qualitative classification).
Read: Grain Size Distribution Measurement
U.S. Standard Sieve
openings in inches
100 (') -....!._
90
80
E ·f 70
~ 60 ..... Q)
.!§ 50 -c ~ 40 rf.
30
20
10
~00 50
.........
10
Gravel
Coarse Fine
...
~
5
Grain Size Distribution Curve
U.S. Standard Sieve numbers
~ ~ ~
Hydrometer
...
'\.
"-
...
' '
' _yoorly sorted ~
......... ./
Well sorted .......... ., ......
'/
\ """~
' '""'-........ -
1 0.5 1.0 0.05 0.01 0.005
Grain size (mm)
Sand
Coarse Medium Fine Silt or Clay
0
10
20
E
30 ·f
>.
40 ~ ~
50 ~ 0
60 i ~ 70 a.
80
90
1 o.oo~0
The grain-size distribution curve is used with the USCS classification chart to classify the sediment
type. Other measures used to describe the sediment are the sorting or gradation of the sediment. As can
be seen in the above chart, a well-sorted sediment has a small range of sediment grain sizes while a
poorly sorted sediment has a large range of sediment grain sizes. In the USCS classification scheme, the
gradation of the sediment is used instead of the sorting. A well-graded sediment has a large range of
grain sizes while a poorly or uniformly graded sediment has a small range of grain sizes.
Figure 4-6. Well-graded soil.
POORLY SORTED SEDIMENT= WELL GRADED SEDIMENT
http ://www. geology. sdsu. edu/ classes/ geol5 52/ seddescription.htm 5/12/2007
Sediment Description Page 7of10
Figure 4-7. Uniformly graded soil.
WELL-SORTED SEDIMENT= POORLY OR UNIFORMLY GRADED SEDIMENT
Figure 4-8. Gap-graded soil.
After sieve analysis, the data are tabulated showing the weight of sediment retained on each sieve. The
cumulative weight retained is calculated starting from the largest sieve size and adding subsequent
sediment weights from the smaller size sieves (see table below). The percent retained is calculated from
the weight retained and the total weight of the sample. [Don't get confused by the graph -it is individual
percent retained in Column 16 and cumulative percent passing in Column 17]. The cumulative percent
passing in Column 17 of the table below is calculated by sequentially subtracting percent retained from
100 %. In table below, cumulative percent passing 1/4 inch sieve = 100 -16 = 84; cumulative percent
passing #4 sieve= 84-5.2 = 78.8; etc.
http ://www.geology.sdsu.edu/ classes/ geol5 52/ seddescription.htm 5/12/2007
Sediment Description Page 8of10
SIEVE ANALYSIS DATA 1. DATE STARTED
22 FEB 91
2 PROJECT l. EXCAVATION 4. DATE COMPlETED
BRAVO AIRFIELD 1..00 28 FEB 91
5. SAMPLE DESCRIPTION 6. SAMPlE NUMBER
lA
LIGlIT BROllN SA~DY SOIL 1 PREWASHCt> ,,6-I
XX I YES INO
8 Ofl:1G1NAl SAMPlE Wf!GH T 9. + "200 'SAMPlE we1G11T 10 -1200 SAMPt..E WEIGHT
2459 2359 100
11. 12. 13. ,. IS 16 17
l•EVE WEIGHT OF WEIGHT 01= WEIGHT CUMULATIVE n.RCENT ?ERCENT
l<ZE SIEVE l<EVE+ RETA<NED WEIGHT lUlAIN~O PAlllNG SAMPLE RETA.INt'.0
1% 202
1 231
~ 210 210 0 0 0 100.0
.;; 230 624 394 394 16.0 84.0
#4 205 332 127 521 5.2 78.8
#8 225 691 466 987 19.0 59.8
#20 215 612 397 1384 16.2 43.6
#60 235 581 346 173'J 14. l 29.5
#100 250 612 362 2092 14. 7 14.8
#200 260 515 255 2347 1('. 4 4.4
18. TOTAL W[ICHT R;£TAIN£0 IN SICVf:S !"-'"'r~141 19 E."-AOR ff llJ
' 2347
20 WEIGHT SrtVEO THROUGH 1200 ;~_.,,,,.04"') 2459-2457 = 2 270-260 10
21 W6.SH1NG LOSS Jllt·lf • J~}J
2459-(2359+100) 0
22 TOT At WEiGt-1T P.ASSf~ 1'200 f/~ .. IC':I
10+100 110
23. TOTAL Wff{i.HT OF-HIA(llONS 111 • m 2457
24. REMARKS 1~ ER~OR ll't>'t~"'}
uses 51' {RROR (If' x •oo •
PEA(!NT ·G _fl.,1_ ORIGINA~ WT !11
PERCENT.I~
Pf ACE NT· F __!::..:..!±._ ~ x 100 = .08
2~ Tf(t-l"tCIAN ]1 CO'M'UTEO 8¥ 1~.o,1~ .. , ... fl 18 C~f(..:Eo ay j~owi. ... .,.,
r~PVZ. r~dtVZ-~r:14~s~
00 Form 1206, DEC 86
Figure 4-4. Data sheet, example of dry sieve analysis.
The cumulative percent passing is plotted on the grain-size distribution graph. The percentage passing
the No. 4 and 200 sieves is used to classify the sediments as gravels (G), sands (S) or fines (must use
plasiticity index to differentiate between silts and clays).
http://www. geology. sdsu.edu/ classes/ geol5 52/seddescription.htm 5/12/2007
Sediment Description
.--.-..... --------------~O~l.~IY~!~~!•~l~~~~------------.,--r....,r--"T""-r'..,: ! !
..
<XJ N
0 -
• ~ a : : : : : : : ! ;
"': .. ..
1-1-+-IH-+-lH-+-+-+-++-+-l-+-HH--t-1--t:
l-l-+-11-1-+-lH-+-+-+-+-+-t-l-+-HH-+-t-i-l-l-+-11-1--1-lH-+-+-+-+-+-+-l-+-HH-+-t-f~
1-1-+-11-1-+-lH-+-+-+-+-+-+-1-+-HH-+-t-io
.. 1-1-+-IH-+-lH-+-+-+-+-+-t-~+-H-+-+-t-t~
SJ ~
1®,H-+-+-+-H-++-HH-++-H-+-++--!---1-l=
-~e iii® !: ~ ~~~:;~~~~:::=::::~=:=~:
-..
0 D :::, -0 Ct' 0 : .. -...
II II
Figure 4-5. Grain-size distribution curve from sieve analysis.
:
j . 0
! s ' i 0 ~ , •
Page 9of10
The grain-size distribution graph is used to read off the grain size at which 10% of the sample passed
(D10), 30% of the sample passed (D3o) and 60% of the sample passed (D6o). These numbers are used to
calculate several coefficients:
Hazen's effective size, D10, which will be used to estimate permeability
Uniformity Coefficient, Cu= D60/D10
In the above graph,
http ://www.geology.sdsu.edu/ classes/ geol5 52/ seddescription.htm 511212007
Sediment Description Page 10 of 10
Dao "" 2.4 mm and D10 0.13 mm
then Cu = 2.4/0.13 == 18.5
The uniformity coefficient is used to judge gradation.
Coefficient of Curvature, Cc
(Dao)2
Cc "" (D6o x D10)
In the above graph,
D30 = 0.3 mm
. (0.3)2
and Cc = (ZA)(O.lS) = .29
In the graph below, well-graded soils (GW and SW) are long curves spanning a wide range of sizes with
a constant or gently varying slope. Uniformly graded soils (SP) are steeply sloping curves spanning a
narrow range of sizes. For a gap-graded soil (GP), the curve flattens out in the area of the grain-size
deficiency or gap.
The USCS criteria for well-graded gravels (GW) and sands (SW) are:
1. Less than 5% finer than No. 200 sieve
2. Uniformity coefficient greater than 4
3. Coefficient of curvature between 1 and 3
If Criterion 1 is met, but not Criteria 2 and 3, the gravels are gap-graded or uniform gravels (GP) or
sands (SP)
If you are interested in more information: Gradation and Bearing Capacity
http://www.geology.sdsu.edu/classes/geol552/seddescription.htm 5/12/2007
-] .
iEPA
J
• I . J
J
J
J
-J
. I J
I ' J
,]
Ll
I 1
~:1
L]
J
, ... I"""' • v I • - ---
United States Office of Research and EP A/600/R-94/168b
Environmental Protection Development September 1994
Agency . Washington DC 20460
The Hydrologic
Evaluation of
Landfill Performanc!e
(HELP) Model
Engineering
Documentation for
Version 3
0.60
0.50
...J 0 ~ 0.40
~ 0.21 ..........
...: O·'\' I>. i.c:i
z w 0.30 !ii 0 0 a: w 0.20 i
0.10
0.00
SAND SANDY LOAM SILTY CLAY SILTY CLAY
LOAM LOAM LOAM CLAY
Figure 2. Relation Among Moisture Retention Parameters and Soil Texture Class
are not specified, the program assumes values near the steady-state values (allowing no
long-term change in moisture storage) and runs a year of simulation to initialize the
moisture contents closer to steady state. The soil water contents at the end of this year
. are substituted as the initial values for the simulation period. The program then runs the
complete simulation, starting again from the beginning of the first year of data. The
results of the volumetric water content initialization period are not reported in the output.
3.3.2 Unsaturated Hydraulic Conductivity
Darcy's constant of proportionality governing flow through porous media is known
quantitatively as hydraulic conductivity or coefficient of permeability and qualitatively
as permeability. Hydraulic conductivity is a function of media properties, such as
particle size, void ratio, composition, fabric, degree of saturation, and the kinematic
viscosity of the fluid moving through the media. The HELP program uses the saturated
and unsaturated hydraulic conductivities of soil and waste layers to compute vertical
drainage, lateral drainage and soil liner percolation. The vapor diffusivity for
geomembranes is specified as a saturated hydraulic conductivity to compute leakage
through geomembranes by vapor diffusion.
13
]
Jl
]
]
]
]
]
J
,]
I~
IJ
J.-~ :j
L,
L:
lj
J -:J
J,J
1~ .'. J
I
_l', 1
1 · .... lL ~~
11
TABLE 1. DEFAULT LOW DENSITY SOIL CHARACTERISTICS
Soil Texture Class A fJ Saturated Total Field Wilting
Porosity Capacity Point Hydraulic
HELP USDA uses vol/vol vol/vol vol/vol Conductivity
cm/sec
1 cos SP 0.417 0.045 0.018 l.Ox10·2
2 s SW 0.437 0.062 0.024 5.8x10·3
3 FS SW 0.457 0.083 0.033 3.lx1()·3
4 LS SM 0.437 0.105 0.047 1. 7x10·3
5 LFS SM 0.457 0.131 0.058 l.Ox10·3
6 SL SM 0.453 0.190 0.085 7.2xl04
7 FSL SM 0.473 0.222 0.104 5.2xl04
8 L ML 0.463 0.232 0.116 3.7x1Q4
9 SiL ML 0.501 0.284 0.135 l.9xl04
10 SCL SC 0.398 0.244 0.136 l.2xl04
ll CL CL 0.464 0.310 0.187 6.4x10·5
12 Si CL CL 0.471 0.342 0.210 4.2x10-s
13 SC SC 0.430 0.321 0.221 3.3x10-s
14 SiC CH 0.479 0.371 0.251 2.5x10·5
15 c CH 0.475 0.378 0.251 2.sx10·5
21 G GP 0.397 0.032 0.013 3.0x10·1
a -constant representing the effects of various
fluid constants and gravity, 21 cm3 I sec
cJ> -total porosity, vol/vol
er -residual volumetric water content, vol/vol
l/;b -bubbling pressure, cm
" -pore-size distribution index, dimensionless
() .. '332.
D. '32..o
o.~Ci'S
0 .t~l
o.~.z,
0 :zr+
0.1~4
A more detailed explanation of Equation 11 can be found in Appendix A of the HELP
program Version 3 User's Guide and the cited references.
19
36 PERMEABILITY
ered that when well-graded mixtures of sand and gravel contained as little as
50'/o of fines (sizes smaller than a No. 200 sieve) high compactive efforts re-'
duced the effective porosities nearly to zero and the permeabilities to less than
0.01 % of those at moderate densities. These tests explain one of the reasons
that blends of sand and gravel often used for drains are virtually useless as
drainage aggregates if they contain more than insignificant amounts of fines.
In the preceding paragraphs variations in the permeability of remolded ma-
terials caused by variable compaction were discussed. Any factor that densities
soils reduces permeability. Studies of the rate of consolidation of clay and peat
foundations are sometimes made by using initial coefficients of permeability '
of compressible formations. While the consolidation process is going on in
foundations their permeabilities are becoming less. Generally, decreases in the •.
permeabilities of clay foundations are rather moderate, but they can be large in
highly compressible organic silts and clays and in peats. Modified calculation
methods utilizing the changing permeability are needed in the analysis of ·,:
highly compressible foundations. Some typical variations in permeability
caused by consolidation are given in Fig. 2.10, a plot of consolidation pressure
versus permeability.
100
10
1
0.1
~ 0.01 -E u 0.001 ~ :s 1)(10-4
m ,!1 x io-5
1)(10-6
1)(10-7
1><10-s
1x10-9
Cleanigravel
I I
Coarse I sand I
I Mell. )~,JV l
I
100,000
10,000
1000
100
>. .. 10 'O ?
~ :c "' 0.1 Cll E
0.01 ~
ix io-3
ix io-4
I ix io-5 I~ i I
0.1 1.0 ~ 1--"(5f
Consolidation pressure, T/sq ft
FIG. 2.10 Permeability versus consolidation pressure.
(2.1)
2.2 COEFFICIENT OF PERMEABILITY 25
k =it (2.2)
Darcy's discharge velocity multiplied by the entire· cross-sectional area, in-
cluding voids e and solids 1, gives the seepage quantity Q under a given hy-
draulic gradient i = !!..h/ll.l or h/L. It is an imaginary velocity that does not
exist anywhere. The average seepage velocity Vs of a mass of water progressing
through the pore spaces of a soil is equal to the discharge velocity (vd = ki)
multiplied by (1 + e)le or the discharge velocity divided by the effective poros-
ity n,; hence permeability is related to seepage velocity by the expression
k = v,n,
i (2.3)
For any seepage condition in the laboratory or in the field in which the
seepage quantity, the area perpendicular to the direction of flow, and the hy-
draulic gradient are known the coefficient of permeability can be calculated.
Likewise, for any situation where the seepage v.:!locity is known at a point at
which the hydraulic gradient and soil porosity also are known, permeability can
be calculated.
Experimentally determined coefficients of permeability can be combined
with prescribed hydraulic gradients and discharge areas in solving practical
problems involving seepage quantities and velocities. When a coefficient of
permeability has been properly determined, it furnishes a very important fac-
tor in the analysis of seepage and in the design of drainage features for engi-
neering works.
The coefficient of permeability as used in this book and in soil mechanics
in general should be distinguished from the physicists' coefficient of perme-
ability K, which is a more general term than the engineers' c6efficient lJ.Jld has
units of centimeters squared rather than a velocity; it varies with the porosity
of the soil but is fudependent of the viscosity and density of the fluid. The
transmissibility factor T represents the capability of an aquifer to discharge
water and is the product of permeability k and aquifer thickness t.
The engineers' coefficient, which is used in practical problems of seepage
through masses of earth and other porous media, applies only to the flow of
water and is a simplification introduced purely from the stitndpoint of conve~
nience. It has units of a velocity and is expressed in centimeters per second,
feet per minute, feet per day, or feet per year; depending on the habits and
personal preferences of individuals using the coefficient. In standard soil me-
chanics terminology k is expressed in centimeters per second~
Although coefficient of permeability is often considered to be a constant
for a given soil or rock, it can vary widely for a given material, depending on
a number of factors. Its absolute values depend, first of all, on the properties
of water, of which viscosity is the most important. For individual materials
AttAc£timent 0 ,3)/a,
Ctdtrgrtn, ''Sc.epogc.> l)ra.i~e,tMo Plow"Jttr~3r11ted. /qr~
~: I
ODE Multi-Flow Page I of l
-• --I_,.,.
HomB Multi-Flow Hazvent Request Catalog Conta
Multi-Flow
P[oduct Information
Applications
Fittings
Accessories
Technical
Backfill
Installation
Drainage Guide
.E8Q'.§
GDE, HvHi-P,ovv
!MJcw01l'DCJFLOI
Drainage Core
Property
Thickness, inches
Flow Rate, gpm/ft ..
Compressive Strength
Geotextlle Fiiter
Property
Weight, oz/sq yd2
Tensile Strength, lb.
Elongation, %
Puncture, lb.
Mullen Burst, psi
Trapezoidal Tear, lb.
Coeffecient of Penn.cm/sec
Flow Rate, gpm/ft2
Perrniltlvity, 1/sec
A.O.S Max US Std Sieve
UV Stability, 500 hrs., %
Seam Strength, lb./ft
Fungus
Technical Properties
Test Method
ASTM 0-1777
ASTM 0-4716
ASIM 0-1621
Test Method
ASTM D-3776
ASTM D-4632
ASTM D-4632
ASTM 0-4833
ASTM D-3786
ASTM D-4533
ASTM D-4491
ASTM 0-4491
ASTM D-4491
ASTM 04751
ASTM 0-4355
ASTM 0-4595
ASTMG-21
Value
1.0 ..iL
29 7'i
6000
value
4.0
100
50
50
200
42
0.1
100
1.8
70
70
100
No Growth
* Horizontal Installation , gradient = 0.01, compressive force = 1 O 1>si for 1 !
All values given represent minimum average roll values
GOE Control Products, Inc. Laguna Hills, CA. 949-305-7117
< htlp: www.Bdc,wnttol, U>rvt/Hulti-flow'i.hhn\> Atto.U1~cnt £ 111
1111 .. .. ~. ..... ,. • .. ..
150 Designing with Geotextiles Chap. 2 ··
TABLE 2.12 RECOMMENDED REDUCTION FACTOR VALUES FOR USE IN ea. (2.25a)
Range of Reduction Factors
Creep
Soil Oogging Reduction Intrusion Chemical Biological
Application and Blinding* of Voids into Voids Qoggingt Oogging
Retaining wall filters 2.0to4.0 1.S to2.0 1.0tol2 1.0to 1.2 1.0to 1.3
Underdrain filters S.OtolO 1.0to 1.S 1.0to 1.2 1.2to1.S 2.0to4.0 -f Erosion-control filters 2.0to 10 1.0to1.S 1.0to1.2 1.0to 1.2 2.0to4.0
Landfill filters S.Oto 10 1.S to 2.0 1.0tol.2 1.2to15 S to 10* . tnn:t Gravity drainage 2.0to4.0 2.0to3.0 1.0to1.2 1.2to1.5
Pressure drainage 2.0to3.0 2.0to3.0 1.0to 1.2 1.1to1.3 1.1to1.3
*If stone riprap or concrete blocks cover the surface of the geotextile, use either the upper values or include
an additional reduction factor.
tvalues can be higher particularly for high alkalinity groundwater.
*Values can be higher for turbidity and/or for microorganism contents greater than 5000 mg/l.
where
qallow = allowable flow rate,
quit = ultimate flow rate,
RFscs =reduction factor for soil clogging and blinding,
RF cR = reduction factor for creep reduction of void space,
(2.2Sb)
RFIN = reduction factor for adjacent materials intruding into geotextile's void
space,
RF cc = reduction factor for chemical clogging,
RF ac = reduction factor for biologicill clogging, and
IlRF = value of cumulative reduction factors.
As with Eqs. (2.24) for strength reduction, this flow-reduction equation could also have
included additional site-specific terms, such as blocking of a portion of the geotextile's
surface by riprap or concrete blocks.
2.5 DESIGNING FOR SEPARATION
Application areas for geotextiles used for the separation function were given in Sec·
tion 1.3.3. There are many specific applications,.and it could be said, in a general sense.
that geotextiles always serve a separation function. If they do not also serve this func·
tion, any other function, including the primary one, will not be served properly. 'Ibis
should not give the impression that the geotextile function of separation always plays 8
secondary role. Many situations call for separation only, and in such cases the geotex· ·~ .
tiles serve a significant and worthwhile function.
Sec.2
2.5.1
Per ha
is the:
cours
that t
sile s1
soils·
separ
andt
ma tic
ofSCt
giver
2.5.2
Com
plaa
avail
thet
derl~
the E
fom
1111---------------------~~
402 Designing with Geonets Chap, 4
4.1.6 Allowable Flow Rate
As described previously, the very essence of the design-by-function concept is the es-
tablishment of an adequate factor of safety. For geonets, where flow rate is the primary
function, this takes the following form.
where
(4.3)
FS = factor of safety (to handle unknown loading conditions or uncertainties
in the design method, etc.),
q.110w = allowable flow rate as obtained from laboratory testing, and
qreqd = required flow rate as obtained from design of the actual system.
Alternatively, we could work from transmissivity to obtain the equivalent relationship.
FS = 8a11ow
8reqd
(4.4)
where 8 is the transmissivity, under definitions as above. As discussed previously, how·
ever, it is preferable to design with flow rate rather than with transmissivity because of
nonlaminar flow conditions in geonets.
Concerning the allowable flow rate or transmissivity value, which comes from
hydraulic testing of the type described in Section 4.1.3, we m~t assess the realism of
the test setup in contrast to the actual.field system. If the test setup does not model site-
specific conditions adequately, then adjustments to the laboratory value must be made.
This is usually the case. Thus the laboratory-generated value is an ultimate value that
ml,lSt be reduced before use in design; that is,
qallow < quit
One way of doing this is to ascribe reduction factors on each of the items not ade-
quately assessed in the laboratory test. For example,
qallow = quit[ l ] RFrN x RFcR X RFcc X RFBc
or if all of the reduction factors are considered together.
where
qallow = qu11[rr~]
' ' .. / .~\,.''
quit = flow rate determined ~ing AS1M ~4716 or ISOIDIS~129.5~fp1~~­
term tests between solid platens usmg water as the tr~~"'''\
under laboratory test temperatures, ·
Sec. 4
I
Some
given i
inform
and lie
specifi1
the pa
amp lei
tionfa
Exampi
v
a
d
ri
s
E
TAI!
FOF
Sp
Ca
Re
Re
DI
Su
I
Se
iith Geonets Chap. 4
iction concept is the es-
, flow rate is the primary
(4.3)
ditions or uncertainties
testing, and
e actual system.
~ equivalent relationship.
(4.4)
liscussed· previously, how·
transmissivity because of
value which comes from
nust ~ss the realism of
setup does not model site-
atory value must be made. ~ is an ultimate value that
ach of the items not ade-
~BJ (4.S}
:i:..:
·:.\J~
Sec. 4.1 Geonet Properties and Test Methods
qa11ow = allowable flow rate to be used in Eq. ( 4.3) for final design purposes,
RFm = reduction factor for elastic deformation, or intrusion, of the adjacent
geosynthetics into the geonet's core space,
403
RF CR = reduction factor for creep deformation of the geonet and/or adjacent
geosynthetic8 into the geonet's core space,
RF cc= reduction factor for chemical clogging and/or precipitation of chemicals
in the geonet's core space,
RFsc =reduction factor for biological clogging in the geonet's core space, and
IIRF = product of all reduction factors for the site-specific conditions.
Some guidelines for the various reduction factors to be used in different situations are
given in Table 4.2. Please note that some of these values are based on relatively sparse
information. Other reduction factors, such as installation damage, temperature effects,
and liquid turbidity, could also be included. If needed, they can be included on a site-
specific basis. On the other hand, if the actual laboratory test procedure has included
the particular item, it would appear in the above formulation as a value of unity. Ex-
amples 4.2 and 4.3 illustrate the use of geonets and serve to point out that high reduc-
tion factors are warranted in critical situations.
Example4.2 ~ What is the allowable geonet flow rate to be used in the design of a capillary break beneath
a roadway to prevent frost heave? Assume that laboratory testing was done at the proper
design load and hydraulic gradient and that this testing yielded a short-term between-
rigid-plates value of 2.5 x 10-4 m2/s. ·7
Solution: Since better information is not known, average values from Table 4.2 are used in
Eq.(45).
TABLE4.2 RECOMMENDED PRELIMINARY REDUCTION FACTOR VALUES FOR EQ. 14.5)
FOR DETERMINING ALLOWABLE FLOW RATE OR TRANSMISSIVITY OF GEONETS
Application Area RFm RFCR* RF cc RF Be
Sport fields 1.0to 1.2 1.0to1.5 1.0to 1.2 1.1to1.3
Capillary breaks 1.1to1.3 1.0to1.2 1.1to15 1.1to1.3
Roof and plaza decks 1.2to1.4 1.0to 1.2 1.0tol.2 1.1to1.3
Retaining walls, seeping rock, 1.3to1.5 1.2to1.4 1.1to1.5 1.0to1.5
and soil slopes
Drainage blankets 1.3to1.5 1.2to1.4 I.Oto 1.2 I.Oto 1.2
Surface water drains for 1.3to15 1.1to1.4 l.Otol.2 1.2to15
landfill covers
Secondary leachate collection 15to2.0 l.4to2.0 15 to2.0 15to2.0
(landfills)
Primary leachate collection l5to2.0 1.4to2.0 L5to2.0 1.5 to 2.0
(landfills)
*These values are sensitive to the density of the resin used in the geonet's manufacture. The higher
the density, the lower the reduction factor. Creep of the covering geotextile(s) is a product-specific
issue.
.,··
; -~~
1,
670 Designing with Geopipes
The above formula can be readily converted to flow rate, Q, by multiplying the veloci
by the cross-sectional area A of the pipe.
For pipelines that are either flowing full or flowing partially full, the Mannin
equation is generally used.
where
V = velocity of flow (mis),
RH= hydraulic radius (m),
S = slope or gradient of pipeline (m/m), and
n = coefficient of roughness (see Table 7. 7) (dimensionless).
Note that plastic pipe of the type discussed in this chapter, with a smooth interior,
Manning coefficient from 0.009 to 0.010. Plastic pipe with a profiled or corrugated
rior has a Manning coefficient ranging from 0.018 to 0.025. · ··
Eqs. (7.9) and (7.10) are generally used in the form of charts or nomogr~ .··
determine pipe sizes, flow velocity or discharge flow rates (see Figures 7.6 a:Qd7~
each chart we include an example from Hwang [7], illustrated on the resperji"tr~;
graphs by heavy lines. Note that both nomographs are for pipes flowing ftJJ.I..,~ >-
Example7.1
A 100 m long pipe with D = 200 mm and C = 120 carries a discharge of 30 11,&
the head loss in the pipe. (See the Hazen-Williams chart in Figure 7.6.)
Solution: Applying the conditions given to the solution chart in Figure 7.6, ~ · .·
dient is obtained.
S = 0.0058 m/m
TABLE 7.7 VALUES OF MANNING ROUGHNESS COEFFICIENT, N, FOR REP~ .•.
SURFACES ..
'fype of Pipe Surface
Wood or finished concrete
Unfinished concrete, well-laid brickwork, concrete or cast iron pipe
Riveted or spiral steel pipe
Smooth, uniform earth channel
Corrugated flumes, typical canals, river free from large stones and heavy weedit:
Canals and rivers with many stones and weeds
*The table does not distinguish between different types of plastic, or between~::··.
pipes with perforations. -'; !'-
Source: After Fox and McDonald [9}.
CHART 1
SOIL RETENTION CRITERIA
FOR STEADY-ST ATE FLOW CONDITIONS
~
NON·DISPERSIVE SOIL
IOHR < 0.51
!OHR •O.SI
·~··~··11 DISPERSIVE SOIL
USE 3 TO 6 inches OF FINE SAND BETWEEN
SOR. ANO GEOTEXTILE. THEN DESIGN THE
GEOTEXTILE AS A FR.TEA FOR THE SAND
/
/ /
t
I I I I
I L-----------1
LESS THAN 20% 1
CLAY. ANO MORE
THAN 10~. FINES
ldz0•0.002 mm
ANO dio•0.075 mm1
PLASTIC SOIL
(Pl •SI
NON.PLASTIC SOIL
(Pl• 51
I
I / r---------'----./
I I
I
I
I
/
I I
/
/
/
/
/ I
/
/
I
FROM SOIL
PROPERTIES TESTS
I
I
I STABLE
SOIL
USE
.dso -c·u :ho LOOS
9 Ogs• d"so
NOTES:
I APPLICATION I FAVORS I RETENTION
(I~ Cc ~31
I
I
USE
\UNSTABLE ~-c· SOIL d10
ld1'>0.075 mm.AND
I d1oc4.8 mml I
I
I
I
I
MORE THAN 90~. t
GRAV I
ld.:)• 4.8 mm1
!Cc • 3 or Cc c ii
APPLICATION FAVORS PERME I IT
·.
..
USE
TANGENT .i\T d o-c·u
is the particle size ol which x percent 1s smaller
where: d"100 and d"o are the extremities of a straight line
drawn through the oarticle·s1ze d1stributton. as directed above: and
d" so is the midooint of this fine.
10 is the relative denisty of the soil
Pl is the olashc1ty index ol the sail
OHR 1s the aoubie·hydrameter ratio of the soil
Portions oi this flow cnart mod1hed from Giroud 119881
13
Source: Luettich, S.M., Giroud, J.P., and Bachus, R.C. (1991).
"Geotextile Filter Design Manual". Report prepared
for Nicolon Corporation, Norcross, Georgia.
llo<35%1
09s < C"ud" o
< l.SC"ud'c
4.2 Define the Hydraulic Gradient for the AppJication Cj.J
The hydraulic gradient will vary depending on the application of the filter.
Anticipated hydraulic gradients for various applications may be estimated using
Figure 3.
4.3 Determine the Minimum Allowable Geotextile Permeability CkJ
After determining the soil hydraulic conductivity and the hydraulic gradient, the
following equation can be used to detennine the minimum allowable geotextile
permeability [Giraud, 1988]:
The hydraulic conductivity (permeability) of the geotextile can be calculated
from the permittivity test method ASTM D 4491; this value can often be obtained
from the manufacturer's literature as well. The geotextile permeability is defined
as the product of the permittivity, tlr, and the geotextile thickness, tg:
k, > cp t,
STEP 5. DETERMINE ANTI-CLOGGING REQUIREMENTS
To minimize the risk of clogging, the following criteria should be met:
..
• Use the largest opening size (095) that satisfies the retention criteria.
• For nonwoven geotextiles, use the largest porosity available, but not less
than 30 percent.
• For woven geotextiles, use the largest percent open area available, but not
less than 4 percent.
Source: Luettich, S.M., Giroud, J.P., and Bachus, R.C. (1991).
"Geotextile Filter Design Manual". Report prepared
for Nicolon Corporation, Norcross, Georgia.
7
NOTES:
Table 4-5
Typical Hydraulic Gradients1a)
DRAINAGE APPLICATION TYPICAL HYDRAULIC
GRADIENT
Standard Dewatering Trench 1.0
Vertical Wall Drain 1.5
Pavement Edge Drain 1 (b)
Landfill LCDRS 1.5
Landfill LCRS 1.5
Landfill SWCRS 1.5
Inland Channel Protection 1 (bl
Shoreline Protection 1Q(bl
Dams 1Q(bl
Liquid Impoundments 10(b)
<a> Table developed after Giraud [1988].
(bl Critical applications may require designing with higher gradients than
those given.
44
Unit Weight ASTM D-3776 Dz.lyd.2 6.0 8.0 10.0 12.0 16.0
Grab Tensile ASTM D-4632 lbs. 150 200 235 275 350
Grab Elongation ASTM D-4632 % 50 50 50 50 50 50
Mullen Burst ASTM D-3787 psi 225 350 450 660 650 750
Puncture ASTM D-4833 lbs. 55 90 130 165 185 220
Trapezoid Tear ASTM D-4533 lbs. 35 65 80 95 115 130
Apparent Opening Size ASTM D-4751 US Sieve 70 70 100 100 100 100 Number
Permittivity ASTM D-4491 gal/min/ft2 100 90 BO 70 60 50 sec·1 2.0 1.7 1.5 1.1 0.9 0.7
Permeability ASTM D-4491 cm/sec .2 .2 .2 .2 .2 .2
Thickness ASTM 0-1777 mils 40 ~ 65 90 110 130 176
Grab Tensile ASTM D-4632 lbs. 130/115 225/200 275/270 3151310 4101370 510/470
Grab Elongation ASTM D-4632 % 75 65 65 65 65 65
Mullen Burst ASTMD-3786 psi 285 410 575 650 625 920
Puncture ASTM D-4833 lbs. 75 120 170 190 210 270
Trapezoid Tear ASTM D-4533 lbS. 60/50 100/80 140/120 1601140 1851155 220/100
Apparent Opening Size ASTM 0·4751 US Sieve 70/120 70/140 100/200 100+ 100+ 100+ Number
Permittivity ASTM D-4491 gal/min/ft2 150 110 100 80 70 60 sec·1 3.1 2.0 1.8 1.5 1.3 1.0
Permeability ASTM 0-4491 cmkec .35 .31 .27 .26 .25 .23
RoRWidth ft. 15 15 15 15 15 15
Roll Length ft. 1200 900 600 600 450 300
Gross Weight lbs. 500 550 500 600 550 500
1000 1000 750 500
r \omioto fititxl Ll t f\~
~lllf.&11.
'
1/(\vloCo ~te. ~
Glotcxti(es '' H 1/1
3FT-SM2.0UT
D
******************************************************************************
******************************************************************************
**
**
"lc'ic
'I<*
** *'I'
**
**
**
HYDROLOGIC EVALUATION OF LANDFILL PERFORMANCE
HELP MODEL VERSION 3.07 (1 NOVEMBER 1997)
DEVELOPED BY ENVIRONMENTAL LABORATORY
USAE WATERWAYS EXPERIMENT STATION
FOR USEPA RISK REDUCTION ENGINEERING LABORATORY
**
** **
**
** *'I'
**
** 'Ir*
******************************************************************************
******************************************************************************
PRECIPITATION DATA FILE:
TEMPERATURE DATA FILE:
SOLAR RADIATION DATA FILE:
C:\HLP3\IUC\IUC30.D4
C:\HLP3\IUC\IUC30.D7
C:\HLP3\IUC\IUC30.D13
C:\HLP3\IUC\IUC30.Dll
C:\HLP3\IUC\SOIL-8.Dl0
C:\HLP3\IUC\3ft-sm2.0UT
EVAPOTRANSPIRATION DATA:
SOIL AND DESIGN DATA FILE:
OUTPUT DATA FILE:
TIME: 11: 34 DATE: 5/ 4/2007
******************************************************************************
TITLE: IUC 40 feet, 10 year slime drain simulation
******************************************************************************
NOTE: INITIAL MOISTURE CONTENT OF THE LAYERS AND SNOW WATER WERE
COMPUTED AS NEARLY STEADY-STATE VALUES BY THE PROGRAM.
LAYER 1
TYPE 1 -VERTICAL PERCOLATION LAYER
MATERIAL TEXTURE NUMBER 0
THICKNESS 36. 00 INCHES
POROSITY 0.4730 VOL/VOL
FIELD CAPACITY 0. 2220 VOL/VOL
WILTING POINT 0 .1040 VOL/VOL
INITIAL SOIL WATER CONTENT 0.2000 VOL/VOL
EFFECTIVE SAT. HYO. COND. 0.520000001000E-03 CM/SEC
LAYER 2
TYPE 2 -LATERAL DRAINAGE LAYER
Page 1
3FT-SM2.0UT
MATERIAL TEXTURE NUMBER 0
THICKNESS 6. 00 INCHES
POROSITY 0.4730 VOL/VOL
FIELD CAPACITY 0. 2220 VOL/VOL
WILTING POINT 0 .1040 VOL/VOL
INITIAL SOIL WATER CONTENT 0.2220 VOL/VOL
EFFECTIVE SAT. HYD. COND. 0.520000001000E-03 CM/SEC
SLOPE 1. 00 PERCENT
DRAINAGE LENGTH = 75.0 FEET
GENERAL DESIGN AND EVAPORATIVE ZONE DATA
NOTE: SCS RUNOFF CURVE NUMBER WAS COMPUTED FROM DEFAULT
SOIL DATA BASE USING SOIL TEXTURE # 7 WITH BARE
GROUND CONDITIONS, A SURFACE SLOPE OF 1.% AND
A SLOPE LENGTH OF 75. FEET.
SCS RUNOFF CURVE NUMBER
FRACTION OF AREA ALLOWING RUNOFF
AREA PROJECTED ON HORIZONTAL PLANE
EVAPORATIVE ZONE DEPTH
INITIAL WATER IN EVAPORATIVE ZONE
UPPER LIMIT OF EVAPORATIVE STORAGE =
LOWER LIMIT OF EVAPORATIVE STORAGE
INITIAL SNOW WATER
INITIAL WATER IN LAYER MATERIALS
TOTAL INITIAL WATER
TOTAL SUBSURFACE INFLOW
88.80
0.0
1.000
16.0
2.762
7.568
1.664
0.000
8.532
8.532
0.00
PERCENT
ACRES
INCHES
INCHES
INCHES
INCHES
INCHES
INCHES
INCHES
INCHES/YEAR
EVAPOTRANSPIRATION AND WEATHER DATA
NOTE: EVAPOTRANSPIRATION DATA WAS OBTAINED FROM
GRAND JUNCTION COLORADO
STATION LATITUDE
MAXIMUM LEAF AREA INDEX
START OF GROWING SEASON (JULIAN DATE)
END OF GROWING SEASON (JULIAN DATE)
EVAPORATIVE ZONE DEPTH
AVERAGE ANNUAL WIND SPEED
AVERAGE lST QUARTER RELATIVE HUMIDITY
AVERAGE 2ND QUARTER RELATIVE HUMIDITY
AVERAGE 3RD QUARTER RELATIVE HUMIDITY
AVERAGE 4TH QUARTER RELATIVE HUMIDITY
39.07 DEGREES
1.00
109
293
16.0 INCHES
8.10 MPH
60.00 %
36.00 %
36.00 %
57.00 %
NOTE: PRECIPITATION DATA WAS SYNTHETICALLY GENERATED USING
COEFFICIENTS FOR GRAND JUNCTION COLORADO
NORMAL MEAN MONTHLY PRECIPITATION (INCHES)
JAN/JUL FEB/AUG MAR/SEP APR/OCT MAY/NOV JUN/DEC
Page 2
0.64
0.47
0.54
0.91
3FT-SM2.0UT
0.75 0.71
0. 70 0.87
0.76
0.63
0.44
0.58
NOTE: TEMPERATURE DATA WAS SYNTHETICALLY GENERATED USING
JAN/JUL
25.50
78.90
COEFFICIENTS FOR GRAND JUNCTION COLORADO
NORMAL MEAN MONTHLY TEMPERATURE (DEGREES FAHRENHEIT)
FEB/AUG
33.50
75.90
MAR/SEP
41.90
67.10
APR/OCT
51. 70
54.90
MAY/NOV
62 .10
39.60
JUN/DEC
72. 30
28.30
NOTE: SOLAR RADIATION DATA WAS SYNTHETICALLY GENERATED USING
COEFFICIENTS FOR GRAND JUNCTION COLORADO
AND STATION LATITUDE 39.07 DEGREES
*******************************************************************************
ANNUAL TOTALS FOR YEAR 1
INCHES --------
PRECIPITATION 7.42
RUNOFF 0.000
EVAPOTRANSPIRATION 6.873
PERC./LEAKAGE THROUGH LAYER 2 0.000000
CHANGE IN WATER STORAGE 0. 547
SOIL WATER AT START OF YEAR 8.532
SOIL WATER AT END OF YEAR 9.080
SNOW WATER AT START OF YEAR 0.000
SNOW WATER AT END OF YEAR 0.000
ANNUAL WATER BUDGET BALANCE 0.0000
cu. FEET ----------26934.602
0.000
24947.395
0.000
1987.206
30971.395
32958.598
0.000
0.000
0.002
PERCENT
100.00
0.00
92.62
0.00
7.38
0.00
0.00
0.00
*******************************************************************************
*******************************************************************************
ANNUAL TOTALS FOR YEAR 2
INCHES CU. FEET PERCENT
PRECIPITATION 9.91 35973.301 100.00
Page 3
RUNOFF
EVAPOTRANSPIRATION
PERC./LEAKAGE THROUGH LAYER 2
CHANGE IN WATER STORAGE
SOIL WATER AT START OF YEAR
SOIL WATER AT END OF YEAR
SNOW WATER AT START OF YEAR
SNOW WATER AT END OF YEAR
ANNUAL WATER BUDGET BALANCE
3FT-SM2.0UT
0.000
11. 228
0.012633
-1. 331
9.080
7.619
0.000
0.130
0.0000
0.000
40758.055
45.857
-4830.604
32958.598
27656.164
0.000
471. 831
-0.008
0.00
113.30
0.13
-13.43
0.00
1. 31
0.00
*******************************************************************************
*******************************************************************************
ANNUAL TOTALS FOR YEAR 3
INCHES --------
PRECIPITATION 8.74
RUNOFF 0.000
EVAPOTRANSPIRATION 8.431
PERC./LEAKAGE THROUGH LAYER 2 0.000000
CHANGE IN WATER STORAGE 0.309
SOIL WATER AT START OF YEAR 7.619
SOIL WATER AT END OF YEAR 8.058
SNOW WATER AT START OF YEAR 0.130
SNOW WATER AT END OF YEAR 0.000
ANNUAL WATER BUDGET BALANCE 0.0000
cu. FEET ----------31726. 203
0.000
30605.041
0.000
1121.151
27656.164
29249.146
471.831
0.000
0.010
PERCENT
100.00
0.00
96.47
0.00
3.53
1.49
0.00
0.00
*******************************************************************************
*******************************************************************************
PRECIPITATION
RUNOFF
ANNUAL TOTALS FOR YEAR 4
INCHES
8.57
0.000
Page 4
CU. FEET
31109.109
0.000
PERCENT
100.00
0.00
EVAPOTRANSPIRATION
PERC./LEAKAGE THROUGH LAYER
CHANGE IN WATER STORAGE
SOIL WATER AT START OF YEAR
SOIL WATER AT END OF YEAR
SNOW WATER AT START OF YEAR
SNOW WATER AT END OF YEAR
ANNUAL WATER BUDGET BALANCE
3FT-SM2.0UT
8.223
2 0.003014
0.344
8.058
8.401
0.000
0.000
0.0000
29850. 770
10.940
1247.404
29249.146
30496.551
0.000
0.000
-0.004
95.96
0.04
4.01
0.00
0.00
0.00
*******************************************************************************
*******************************************************************************
ANNUAL TOTALS FOR YEAR 5
INCHES --------
PRECIPITATION 10. 36
RUNOFF 0.000
EVAPOTRANSPIRATION 10.137
PERC./LEAKAGE THROUGH LAYER 2 0.000000
CHANGE IN WATER STORAGE 0.223
SOIL WATER AT START OF YEAR 8.401
SOIL WATER AT END OF YEAR 8.624
SNOW WATER AT START OF YEAR 0.000
SNOW WATER AT END OF YEAR 0.000
ANNUAL WATER BUDGET BALANCE 0.0000
cu. FEET ----------37606.805
0.000
36797.102
0.000
809.710
30496.551
31306. 262
0.000
0.000
-0.007
PERCENT
100.00
0.00
97.85
0.00
2.15
0.00
0.00
0.00
*******************************************************************************
*******************************************************************************
PRECIPITATION
RUNOFF
ANNUAL TOTALS FOR YEAR 6
INCHES
7.78
0.000
Page 5
CU. FEET
28241.400
0.000
PERCENT
100.00
0.00
EVAPOTRANSPIRATION
PERC./LEAKAGE THROUGH LAYER
CHANGE IN WATER STORAGE
SOIL WATER AT START OF YEAR
SOIL WATER AT END OF YEAR
SNOW WATER AT START OF YEAR
SNOW WATER AT END OF YEAR
ANNUAL WATER BUDGET BALANCE
3FT-SM2.0UT
8.167
2 0.000000
-0.387
8.624
8.237
0.000
0.000
0.0000
29645.734
0.000
-1404.339
31306. 262
29901. 922
0.000
0.000
0.005
104.97
0.00
-4.97
0.00
0.00
0.00
*******************************************************************************
*******************************************************************************
ANNUAL TOTALS FOR YEAR 7
INCHES --------
PRECIPITATION 8.20
RUNOFF 0.000
EVAPOTRANSPIRATION 7.154
PERC./LEAKAGE THROUGH LAYER 2 0.000000
CHANGE IN WATER STORAGE 1.046
SOIL WATER AT START OF YEAR 8.237
SOIL WATER AT END OF YEAR 9.023
SNOW WATER AT START OF YEAR 0.000
SNOW WATER AT END OF YEAR 0.260
ANNUAL WATER BUDGET BALANCE 0.0000
cu. FEET ----------29766.002
0.000
25970.750
0.000
3795.249
29901. 922
32752.676
0.000
944.495
0.004
PERCENT
100.00
0.00
87.25
0.00
12.75
0.00
3.17
0.00
*******************************************************************************
*******************************************************************************
ANNUAL TOTALS FOR YEAR 8
INCHES cu. FEET PERCENT -------------------------
PRECIPITATION 7.46 27079.803 100.00
RUNOFF 0.000 0.000 0.00
EVAPOTRANSPIRATION 8.640 31362. 828 115.82
Page 6
PERC./LEAKAGE THROUGH LAYER 2
CHANGE IN WATER STORAGE
SOIL WATER AT START OF YEAR
SOIL WATER AT END OF YEAR
SNOW WATER AT START OF YEAR
SNOW WATER AT END OF YEAR
ANNUAL WATER BUDGET BALANCE
3FT-SM2.0UT
0.017125
-1.197
9.023
7.452
0.260
0.634
0.0000
62.163
-4345.196
32752.676
27050.932
944.495
2301. 042
0.009
0. 23
-16.05
3.49
8.50
0.00
*******************************************************************************
*******************************************************************************
ANNUAL TOTALS FOR YEAR 9
INCHES --------
PRECIPITATION 5.83
RUNOFF 0.000
EVAPOTRANSPIRATION 6.171
PERC./LEAKAGE THROUGH LAYER 2 0.000000
CHANGE IN WATER STORAGE -0.341
SOIL WATER AT START OF YEAR 7.452
SOIL WATER AT END OF YEAR 7.582
SNOW WATER AT START OF YEAR 0.634
SNOW WATER AT END OF YEAR 0.163
ANNUAL WATER BUDGET BALANCE 0.0000
cu. FEET ----------21162.902
0.000
22400.824
0.000
-1237.930
27050.932
27522.836
2301. 042
591. 209
0.008
PERCENT
100.00
0.00
105.85
0.00
-5.85
10.87
2.79
0.00
*******************************************************************************
*******************************************************************************
ANNUAL TOTALS FOR YEAR 10
INCHES cu. FEET PERCENT -------------------------
PRECIPITATION 7.35 26680.502 100.00
RUNOFF 0.000 0.000 0.00
EVAPOTRANSPIRATION 6.669 24209.432 90.74
Page 7
PERC./LEAKAGE THROUGH LAYER 2
CHANGE IN WATER STORAGE
SOIL WATER AT START OF YEAR
SOIL WATER AT END OF YEAR
SNOW WATER AT START OF YEAR
SNOW WATER AT END OF YEAR
ANNUAL WATER BUDGET BALANCE
3FT-SM2.0UT
0.000000
0.681
7.582
8.309
0.163
0.116
0.0000
0.000
2471.069
27522.836
30162.926
591. 209
422.187
0.001
0.00
9. 26
2.22
1. 58
0.00
*******************************************************************************
*******************************************************************************
AVERAGE MONTHLY VALUES IN INCHES FOR YEARS 1 THROUGH 10
PRECIPITATION
TOTALS
STD. DEVIATIONS
RUNOFF
TOTALS
STD. DEVIATIONS
EVAPOTRANSPIRATION
TOTALS
STD. DEVIATIONS
JAN/JUL FEB/AUG MAR/SEP APR/OCT MAY/NOV JUN/DEC
0.44
0.39
0.23
0.30
0.000
0.000
0.000
0.000
0.440
0. 512
0.214
0.398
0.44
1.08
0.30
0.48
0.000
0.000
0.000
0.000
0.536
0.979
0.265
0. 510
0.65
0.58
0.31
0.44
0.000
0.000
0.000
0.000
0.624
0.483
0.279
0.397
0.81
1.00
0.44
0.63
0.000
0.000
0.000
0.000
0. 720
0.735
0.353
0.632
0.75
0.94
0. 53
0.52
0.000
0.000
0.000
0.000
0.941
0. 587
0.546
0.250
0.52
0.54
0.63
0.31
0.000
0.000
0.000
0.000
1.161
0.451
0.558
0.226
PERCOLATION/LEAKAGE THROUGH LAYER 2
TOTALS
STD. DEVIATIONS
0.0000 0.0000 0.0001 0.0010 0.0009 0.0008
0.0000 0.0000 0.0000 0.0000 0.0005 0.0000
0.0000 0.0000 0.0004 0.0024 0.0020 0.0017
0.0000 0.0000 0.0000 0.0000 0.0014 0.0000
*******************************************************************************
Page 8
3FT-SM2.0UT
*******************************************************************************
AVERAGE ANNUAL TOTALS & (STD. DEVIATIONS) FOR YEARS 1 THROUGH 10
INCHES cu. FEET PERCENT -----------------------------------------PRECIPITATION 8.16 ( 1.320) 29628.1 100.00
RUNOFF 0.000 ( 0.0000) 0.00 0.000
EVAPOTRANSPIRATION 8.169 ( 1. 5803) 29654.79 100.090
PERCOLATION/LEAKAGE THROUGH 0.00328 ( 0.00628) 11.896 0.04015
LAYER 2
CHANGE IN WATER STORAGE -0.011 ( 0.7880) -38.63 -0.130
*******************************************************************************
D ******************************************************************************
PEAK DAILY VALUES FOR YEARS
PRECIPITATION
RUNOFF
PERCOLATION/LEAKAGE THROUGH LAYER 2
SNOW WATER
MAXIMUM VEG. SOIL WATER (VOL/VOL)
MINIMUM VEG. SOIL WATER (VOL/VOL)
1 THROUGH
(INCHES) ----------0.86
0.000
0.002888
0.72
10
(CU. FT.) -------------
0. 2313
0.1040
3121. 800
0.0000
10.48416
2615.3926
******************************************************************************
D
******************************************************************************
FINAL WATER STORAGE AT END OF YEAR 10
LAYER
1
2
SNOW WATER
(INCHES)
6. 9773
1. 3320
0.116
(VOL/VOL)
0.1938
0.2220
******************************************************************************
******************************************************************************
Page 9
I (3/11/2010) Loren fylorton -RE: DUSA Cell 4A Construction: Two Items noted.
From:
To:
CC:
Date:
Subject:
Attachments:
Dave,
<[e-mail]>
<[e-mail]>, <[e-mail]>, <[e-mail] ...
<[e-mail]>, <[e-mail]>
712108 5:42 PM
RE: DUSA Cell 4A Construction: Two Items noted.
Slimes Drain Drainage.070208.pdf
I have revised the calculations presented in the Analysis of Slimes Drain included in the Cell 4A Interrogatories. The original
calculation was based on an area for flow to pass into the strip composite of 14 inches per foot of length (12 inches across the top
and two sides at 1 inch each). This calculation, using the maximum liquid depth resulted in a drainage time of approximately 5.5
years.
The sand bag coverage issue likely only impacts a discreet amount of the sides of the strip composite (probably much less than
10%). However, taking a conservative approach, I assumed that all two inches of the sides of the entire strip composite is not
available for flow. Incorporating the 12 inches per foot of length flow area into the maximum liquid level model calculation results in
a drainage time of approximately 6.4 years (see attached), an increase of approximately 0.9 years. Given that the relationship is
linear, one can interpolate between 5.5 and 6.4 years to estimate the impact of the percentage of strip composite sides that are not
covered by sand bags. If this value is 10%, one can estimate that the drainage time would be approximately 5.6 years (0.9 years x
10% + 5.5 years).
We believe that this minor change meets the design intent.
Please let us know if you have additional comments, and confirm that this addresses your concerns.
Regards,
Greg
From: Dave Rupp [mailto:[e-mail]]
Sent: Wednesday, July 02, 2008 1 :54 PM
To: [e-mail]; [e-mail]; Greg Corcoran
Cc: Jim Cox; Jephory McMichen; Loren Morton
Subject: RE: DUSA Cell 4A Construction: Two Items noted.
Greg,
Thanks for your response. As I view section C-5 of the drawings, the sandbags drape over the both edges of the strip-drain, and
preclude access to the edge and top of the strip-drain by the tailings. This will be a criterion we will use in inspecting for
conformance to the existing plans.
The first photograph DRC sent on 6-25-08 regarding this problem shows six openings through the sandbags to the strip-drain
surfaces. It appears that if the existing bags are only centered with respect to the strip-drain, the coverage will not achieve
conformance to the drawing section C-5.
The design intent was to fully protect the strip-drain from clogging. Therefore, DUSA needs to make the necessary adjustments
to conform to the drawings, or submit an alternative design proposal to accomplish the design intent. - -
David A. Rupp, P.E.
Utah Division of Radiation Control
P. 0. Box 144850
Salt Lake City, UT 84114-4850
Telephone [phone]
Fax [phone]
Email: [e-mail]
»> <[e-mail]> 71112008 1:50 PM»>
Dave,
Over the past few days, the contractor has repositioned sand bags over the slimes drain to address this issue. and bring the
installation into compliance with the design drawings and specifications. We believe this fully addresses your earlier concerns.
Please let us know if you have additional comments, and confirm that this addresses your concerns.
Regards,
Greg
From: Dave Rupp [mailto:[e-mail]]
Sent: Tuesday, July 01, 2008 6:41 AM
To: [e-mail]; [e-mail]; Greg Corcoran
Cc: Jim Cox; Jephory McMichen; Loren Morton
Subject: RE: DUSA Cell 4A Construction: Two Items noted.
Greg,
I am fine with your explanation of the waves in the geomembrane and strip-drain.
However, regarding the overfilled sandbags creating incomplete coverage over the strip-drains, DUSA needs to either:
1 ). Provide revised calculations showing the new time required for completion of the drainage of the tailings through the slimes
drain, at the time of cell closure. This is critical, given the existing configuration which departs from the approved design, in which
Page 1 I
I (3/11/2010) Loren Morton -RE: DUSA Cell 4A Construction: Two Items noted.
portions of the strip-drain would now be compromised by invasion of the strip-drains by slimes material, and the corresponding
reduction of flow into the collection pipe, or
2). Provide proposed design or field construction adjustments to prevent this problem, with corresponding calculations as
necessary to demonstrate the effectiveness of the adjustments.
We cannot agree with your claim that when the cell is loaded the sandbags will settle and the problem may resolve itself,
because there will be no practical means available to verify this claim. Without such verification DUSA has an obligation to prevent
the problem now.
Please be advised that the As-built Report cannot be approved without prior resolution of this construction problem. - -
David A. Rupp, P.E.
Utah Division of Radiation Control
P. 0. Box 144850
Salt Lake City, UT 84114-4850
Telephone [phone]
Fax [phone]
Email: [e-mail]
»> <[e-mail]> 6/25/2008 1 :30 PM >»
Dave,
The waves in the geomembrane are a result of expanding geomembrane (thermal expansion due to increasing daytime
temperatures) and the "plastic memory" in the underlying geonet. The plastic memory results from the manufacturing process,
which uses an extrusion process consisting of extruding molten plastic through counter-rotating, round dies. As the plastic geonet
is formed, it exits the die as a round column. As the plastic net cools in the column, the plastic develops a slight "memory" of this
shape. After the column is cut and laid flat to form the geonet rolls, the geonet "remembers" that it was once a column or tube
shape and when laid flat exhibits some minor curling of the edges. This is not detrimental to the geonet, but just creates minor
curling of the edges that are easily laid flat with a small normal load on the surface.
The waves will lay down once the sand bags are put in place between the header pipe and the lateral. The filling of the cell with
liquids will provide a relatively uniform liner system temperature, thereby reducing the thermal expansion due to elevated daytime
air temperature. The material in the cell, whether liquid or solid, will also provide ballast that will get the waves to lay down,
especially the underlying geonet with its "plastic memory". Remember that the slimes drain system will not be operated until the
cell is filled with tailings.
The section on the drawings does show that the sand bag drapes over the strip composite. However, some of the sandbags were
overfilled and leave a small gap at the sides of the strip composite. We do not believe that this causes any problems with the intent
of the slimes drain design. Furthermore, we believe that the sand bags will settle in a bit more once the liquid loading is in the cell.
The sand bags were designed to provide a sand layer that would act as a filtration layer in addition to the filter geotextile on the strip
composite. The bags themselves were only required as a means to get the sand on top of the strip composite. In addition, the
sand in the sand bags will convey liquid to the header pipe as the bags are placed in a continuous line.
Please let us know if you have additional comments, and confirm that this addresses your concerns.
Regards,
Greg
From: Dave Rupp [mailto:[e-mail]]
Sent: Wednesday, June 25, 2008 8:08 AM
To: [e-mail]; [e-mail]
Cc: Greg Corcoran; Jephory McMichen; Loren Morton
Subject: DUSA Cell 4A Construction: Two Items noted.
Harold/Steve:
On a site visit last Friday, I had two items of concern I wanted to point out for your resolution.
The main one is the covering by the sand bags on the strip drains. Incomplete covering of the drains is seen now, and does not
conform to the drawings, which show the bags completely covering the drains. On site I spoke with Messrs. D.Turk of DUSA and
J.McMichen of GeoSyntec regarding this.
The other item is the inconsistent grade of the last few feet of some of the strip-drains near their connection to the herring
backbone interceptor piping. The is grade waving, which if left would impede the flow from the strip-drain into the piping.
These items are illustrated in the attached photos. These items will need to be resolved prior to DRC final acceptance. Please
contact me if you have questions. - -
David A. Rupp, P.E.
Utah Division of Radiation Control
P. 0. Box 144850
Salt Lake City, UT 84114-4850
Telephone [phone]
Fax[phone]
Email: [e-mail]
Page 2 !
Permeability Permeability Drainage Thickness Path Length (cm/sec) (ft/min) lft.l (VF)
3.31E-04 6.51E-04 46.3 39
3.31E-04 6.51E-04 45.8 38
3.31E-04 6.51E-04 45.4 37
3.31E-04 6.51E-04 45.0 36
3.31E-04 6.51E-04 44.6 35
3.31E-04 6.51E-04 44.2 34
3.31E-04 6.51E-04 43.8 33
3.31E-04 6.51E-04 43.5 32
3.31E-04 6.51E-04 43.2 31
3.31E-04 6.51E-04 43.0 30
3.31E-04 6.51E-04 42.8 29
3.31E-04 6.51E-04 42.6 28
3.31E-04 6.51E-04 42.4 27
3.31E-04 6.51E-04 42.3 26
3.31E-04 6.51E-04 42.2 25
3.31E-04 6.51E-04 42.1 24
3.31E-04 6.51E-04 42.1 23
3.31E-04 6.51E-04 42.1 22
3.31E-04 6.51E-04 42.1 21
3.31E-04 6.51E-04 42.2 20
3.31E-04 6.51E-04 42.3 19
3.31E-04 6.51E-04 42.5 18
3.31E-04 6.51E-04 42.6 17
3.31E-04 6.51E-04 42.8 16
3.31E-04 6.51E-04 43.1 15
3.31E-04 6.51E-04 43.3 14
3.31E-04 6.51E-04 43.6 13
3.31E-04 6.51E-04 44.0 12
3.31E-04 6.51E-04 44.3 11
3.31E-04 6.51E-04 44.7 10
3.31E-04 6.51E-04 45.1 9
3.31E-04 6.51E-04 45.6 8
3.31E-04 6.51E-04 46.0 7
3.31E-04 6.51E-04 46.5 6
3.31E-04 6.51E-04 47.1 5
3.31E-04 6.51E-04 47.6 4
3.31E-04 6.51E-04 48.2 3
3.31E-04 6.51E-04 48.8 2
3.31E-04 6.51E-04 49.4 1
Averaae Soil Porosity 0.22
Geomean Soil Permeability 3.31E-04 cm/sec
Distance Between Drains 50 ft
Thickness of Unit 1 ft
Maximum Deoth 39 ft
Lenath of Strip Drain 27,550 ft
Slimes Drain Drainage.070208.xls
TABLE3
White Mesa Mill
Cell 4A Slimes Drain
ax1mum IOUI eo: M L" "d D th
Volume of Time to
Q (cfm/ft) Liquid Dewater
ICF/ftl lminNF/ftl
5.49E-04 11 20,049
5.40E-04 11 20,354
5.31E-04 11 20,722
5.21E-04 11 21,110
5.11E-04 11 21,520
5.01E-04 11 21,954
4.91E-04 11 22,415
4.79E-04 11 22,957
4.67E-04 11 23,534
4.54E-04 11 24,206
4.41E-04 11 24,924
4.28E-04 11 25,694
4.15E-04 11 26,520
4.00E-04 11 27,475
3.86E-04 11 28,507
3.71E-04 11 29,624
3.56E-04 11 30,912
3.40E-04 11 32,317
3.25E-04 11 33,856
3.09E-04 11 35,633
2.93E-04 11 37,598
2.76E-04 11 39,874
2.60E-04 11 42,319
2.43E-04 11 45,175
2.27E-04 11 48,524
2.11E-04 11 52,231
1.94E-04 11 56,639
1.78E-04 11 61,922
1.62E-04 11 68,012
1.46E-04 11 75,488
1.30E-04 11 84,626
1.14E-04 11 96,260
9.91E-05 11 110,977
8.40E-05 11 130,880
6.91E-05 11 159,083
5.47E-05 11 200,964
4.05E-05 11 271,330
2.67E-05 11 412,062
1.32E-05 11 834,256
days
years
Time to Total Flow Volume Removed Pipe
Dewater Limitation
ldavsNF/ftl Rate(gpm) (gal) ldavsl
13.92 113.07 2,266,966 0.18
14.13 111.38 2,266,966
14.39 109.40 2,266,966
14.66 107.39 2,266,966
14.94 105.34 2,266,966
15.25 103.26 2,266,966
15.57 101.14 2,266,966
15.94 98.75 2,266,966
16.34 96.33 2,266,966
16.81 93.65 2,266,966
17.31 90.96 2,266,966
17.84 88.23 2,266,966
18.42 85.48 2,266,966
19.08 82.51 2,266,966
19.80 79.52 2,266,966
20.57 76.52 2,266,966
21.47 73.34 2,266,966
22.44 70.15 2,266,966
23.51 66.96 2,266,966
24.75 63.62 2,266,966
26.11 60.30 2,266,966
27.69 56.85 2,266,966
29.39 53.57 2,266,966
31.37 50.18 2,266,966
33.70 46.72 2,266,966
36.27 43.40 2,266,966
39.33 40.02 2,266,966
43.00 36.61 2,266,966
47.23 33.33 2,266,966
52.42 30.03 2,266,966
58.77 26.79 2,266,966
66.85 23.55 2,266,966
77.07 20.43 2,266,966
90.89 17.32 2,266,966
110.47 14.25 2,266,966
139.56 11.28 2,266,966
188.42 8.36 2,266,966
286.15 5.50 2,266,966
579.34 2.72 2,266,966
2,321.18 88,411,655 0.18
6.36
7/2/2008
... ,~·· ~· ....,___._. ____ .... _,_._,_~--~·. '"···-···---··--''-·"'-••• -···-··,.. '"'~-... -.,.~,..:~· ........ ·.,~-.·--~-·.--.''·"·'·'-"· ,__,..,,'"'"--·-~'-...... ·""-··~·-·.·.·-~-·· ••.• , -,,.,;.:h:•·,.'"~"·""'-<":<-> • .:>:::.~-,.·-'-'.:~•-.l'". -·· ··-·· ·.--.......... '--'-'-=--:·..:o-:-' . .:::.2 ,;...·.·,_,,_.,._,,,_, .,.~-. • •••• '" '~ ':;.:,C..·'A'"-'--"·"'·'·~ -:::.;..;:_;_._;--'--'-:·;>J~:· ,,.. .... ·~·~{
... )
··-..... ...
)
) '· -···
Geosyntec C>
consultants
COMPUTATION COVER SHEET
Denison
Client: Mines Project: White Mesa Miil-Cell 4B
Title of Computations
Computations by:
Assumptions and
Proc«lures Checke<l
by:
Title (peer reviewer)
Computations Signature
Checke<) by:
Title
Computations
backchecked by:
(originator) Title
Approved by:
(pm or designate)
Title
Approval notes:
Revisi1.1ns (number and initial a1l revisions)
No. Sheet Date By
SC0349/SC0349 -Slimes Drain Cale4B.20070830.doc
Checked by
Project/
Proposal No.:
ToskNo.
SC0349-01
04
\\15ola::r
Date
Date
Date
Approval
~=
j.
i·
: ..
. ) ·· ..... /
.. )
Geosyntec 1>
consultants
Page 1 of 10
Written by; R. Flynn Date: 08/30/07 Reviewed by: G. Corcoran Date: ----
Client: Denison Proje<t: White Mesa Mill -Project/ SC0349-01
Mines Cell 4B Proposal No.:
PURPOSE AND METHOD OF ANALYSIS
Task 04
No.:
The purpose of this calculation package is to demonstrate that the proposed "slimes
drain system" will dewater the tailings at the site within a reasonable time. ·
Fluid flow rate in porous media will be evaluated using Darcy's law.
ASSUMPTIONS
• This project involves the construction of a 42 acre double lined tailings cell
(Cell 4B) that is approximately 42 feet deep at its deepest point and 31 feet deep
at the shallowest point with an average depth of 35 feet. The liquids level in the
cell will be kept a minimum of 3 feet below the top of the berm (free-board).
Therefore, the maximum depth of liquid in the cell will be 39 feet at the start of
dewatering.
• The cell will be filled with -28 mesh (US No. 30 sieve) taiiings, largely
consisting of fine sands and silts, with some clay. Results of grinding test sieve
analyses, which are reported based on Tyler Mesh sieve sizes, are presented in
Table 1. The grinding test data report is presented in Attachment A. Sieve to
Tyler Mesh conversions are presented in Attachment B.
• The tailings will be placed within the cell in a slurry form under the surface of
the free liquid contained within the cell. This placement methodology is
anticipated to result in a low density (no compaction) soil stmcture. Therefore,
saturated hydraulic conductivity and total porosity are anticipated to pe higher
than similar soils that are compacted.
• Based on the grinding report (Attachment A), tailings are comprised of
approximately 6% medium sand, 49% fine sand, and 45% silt and clay size
particles (Table 1 ).
• Based on the gradation of the tailings (Table 1) from the grinding report
(Attachment A), the tailings would be classified as silty sand (SM) by the unified
soil classification system (USCS). According to the Hydrologic Evaluation of
Landfill Performance (HELP) Model Engineering Documentation
(Attachment C), low density SM soils would exhibit saturated hydraulic
SC0349 -Sl!mes Drain Calc4B.20070830.doc
Geosyntec 1>
Page
Written by: R. Flynn Date: 08/30/07 Reviewed by: G. Corcoran
Client: Denison Project: White Mesa Mill-Project/ SC0349-01
Mines Cell 4B Proposal No.:
consultants
.2 of 10
Date:
Task 04
No.:
conductivities of between 1.7xl0-3 cm/sec and 5.2xl04 cm/sec and low density
silt (ML) and sandy clay (SC) would exhibit saturated hydraulic conductivities
of between 3.7x10-4 cm/sec and 1.2x10"4 cm/sec. The geomean of these two
groups of soils, which are gradationally similar to the tailings, is 4.74x10"4
cm/sec (Table 2). According to Cedergren (Attachment D), under a normal
stress of 2 tons per square foot (approximate no1mal stress on deeper tailings in
the cell), medium sand, fine sand, silt, and silty clay would exhibit a saturated
hydraulic conductivities of approximately 2x10"2 cm/sec, lx10-2 cm/sec, 1x10·4
cm/sec Sxl0-7 cm/sec, respectively. The geomean of these three soil types,
where are gradationally sintilar to the tailings, is 3.3 lx104 cm/sec. The more
conservative, lower hydraulic conductivity of 3.31xl0"4 cm/sec, will be used in
this analysis.
• .Based on the gradation of the tailings from the grinding report, the tailings
would be classified as silty sand (SM) by the unified soil classification system
(USCS). According to the HELP . Model Engineering Documentation
(Attachment C), low density SM soils would exhibit drainable porosity of
between 0.251 and 0.332 and low density silt (ML) and sandy clay (SC) would
exhibit drainable porosity of between 0.154 and 0.231. The average of these two
groups of soils, which are gradationally similar to the tailings, is 0.253 (Table 2).
According to the HELP Model Engineering Documentation, medium sand, fine
sand, silt, and silty clay would exhibit drainable porosity values of 0.35, 0.29,
0.14, and 0.11, respectively. The average of these three soil types, where are
gradationally sintilar to the tailings, is 0.22. Since the average drainable porosity
· of 0.22 corresponds to the lower hydraulic conductivity (higher density, lower
permeability, lower porosity) selected .above, this value will be used in this_
analysis.
• The permeability of the tailings is isotropic.
• Darcy's law will be used to compute groundwater flow velocities.
• The proposed slimes drain system will consist of a series of strip drains
(geotextile wrapped HDPE core, 1" thick, 12" wide, with a transmissivity of
29 (gal/min/ft), which connect to a perforated 4" diameter PVC header pipe that
SC0349 -Slimes Drain C.lc4B.20070830.doc ·
!-:
' i :\
l i ;
::·-, ' ·I ' Written by: R. Flynn Date: 08130/07
Client: Denison
Mines
Project: White Mesa Miil -
Cell 4B
Reviewed by:
Project/
Proposal No.:
Geosyntec t>
consultants
Page 3 of 10
G. Corcoran Date: tihlor
SC0349-01 Task 04
No.:
is bedded .in drainage aggregate and wrapped in a woven geotextile. The PVC
pipe will convey the liquid to the sump for removal.
• The slimes drain spacing will be 50' and will be continuous across the base of
the cell (Figure 1 ).
CALCULATIONS
The flow geometry for the average depth of liquid within the cell is illustrated on
Figure 2 and used to compute the emptying time for the proposed slimes drain system.
Calculate the flow into a unit length of strip drain for the various hydraulic gradient
conditions.
At the start of cell dewatering, the maximum depth of liquid will vaiy between 31 feet at
··~ .~ the shallow end and 39 feet at the deep end, with an average depth of approximately 35
· ...... ·' feet. As the water level drops within the cell, the length of the longest flow path and the
associated hydraulic gradient will continually change with time.
The total volume to be drained by a unit length of strip, Q, can be calculated using
Darcy's law as follows:
Q = kiA
where:
.k =hydraulic conductivity of tailings= 3.31x10"4 cm/sec= 6.5lxl0"4 ft/min
i =gradient along flowpath = dh = ~"' 0.86 (see Figure 2)
di 40.6
A= area of strip drain where flow will pass =1.17 ft2/ft
Q = (6.s1x10-4 fl_ )(0.86)(1.17 ft2)
mtn
Q = 6.55xl0"4 fl' x 7.48 gal = 4.9xl0-3 gal
min j/3 min
SC0349 ·Slimes Drain Calc4B.20070830.doc
(see Figure 3)
~-
,.
I
Written by: R. Flynn Date: 08/30/07
Client: Denison
Mines
Project: White Mesa Miil-
Cell 4B
Reviewed by:
Project/
Proposal No.:
Geosyntec e>
consultants
Page 4 of 10
G. Corcoran Date: rzh/or
SC0349·01 Task 04
No.:
For each one foot incremental drop in fluid elevation within the cell, the total volume to
be drained by a unit length of strip drain is as follows:
V = 1 ft unit length x 1 ft depth x 50 ft width x 0.022 ( drainable porosity) = 11 ft3 of free
liquid
Therefore, the time to drain the first one foot of liquid within the cell can be estimated
as follows:
t = V/Q = 11 ft3 I 6.55xl 0·4 :ft3 /min= 16, 793 minutes = 11.66 days
Tables 3, 4, and 5 depict the calculations for the maximum (39 feet), average (35 feet),
and minimum (31 feet) cell liquid depth, respectively. The results of the maximum
depth calculations indicate that the proposed slimes drain system will allow the tailings
contained in Cell 4B to drain within approximately 5.45 years.
Calculate the design flow rate of the strip drains.
For this calculation we will assume that the strip drains have a flow rate of29 gallon per
minute per foot (Attachment E, GDE Multi-Flow, 2006), a width of 12" and that flow is
occurring under a gradient of0.01.
Design Flow rate of strip drains:
q=®i
where:
q = flowrate per unit width
dh -l=-=0.01 dl
_ 0 = h·ansmissivity = 29 gpm/ft
To account for deh·imental effects on the geonet such as chemical clogging,
biological clogging, installation defects, and creep, partial factors of safety were used to
reduce the strip drain transmissivity. Using recommended pa1tial factor of safety values
from Koerner (1999) (AttachmentF, 2/4), the reduced transmissivity is calculated as
follows:
SCOJ49. Slimes Drain Calc4B.200708JO.doc
; ' !:
---... ---'··------·---------------~----·--·· ---· -. --·-· . -· " -. -.. ---' . -----. -----. -· --. -·---"' ---~~--~-------~-~--~ ""···-.-. ·~-~-~---~--~ ..,,_,_~,-... -............... ~-.·-=~~----... , __ ,_._,__,_ ....... ~ .. -,_., ·:'.
. _. .. .i
Geosyntec t>
consultants .
Page 5 of 10
Written by: R. Flynn Date: 08/30/07 Reviewed by: G. Corcoran Date: 1th/.1
Client: Denison
Min"'
Project: White M"'a Mlll-
Ccll 4B
®allow= e.ul "''S "''S "''S l FSmxr. cnXr. ccXr. nc
l
where:
e allow= allowable flow
e ultimate = calculated value of flow
Project/ SC0349-01 Task
Proposal No.: No.:
FSIN = factor of safety for installation, 1.5 (CQA performed during installation)
FScR = factor of safety for creep, 2.0
FScc =factor of safety for chemical clogging, 2.0
FSac =factor of safety for biological clogging, 1.0 (low pH precludes biological
activity)
04
... ) The factors of safety are used to calculate the allowable transmissivity:
e = 29 gpm [ 1 l = 4.83 gpm
allow ft 1.5 X 2.Q X 2.0X1.0 ft
Using this transmissivity value, the average factor of safety for flow in the strip
composite is estimated to be as follows:
FS""' Qv = 4·83 gpm = 986 (Acceptable)
QR 0.0049 gpm
The average allowable flow rate is much larger than the average maximum flow rate,
even with the built-in pa1tial factors of safety. Furthermore, as indicated on Tables 3, 4,
and 5, the calculated flow rate within the strip drain decreases with time, which further
increases the factor of safety.
SC0349 -Slimes Drain Calc4B.20070830.doo
,.
,-,
;t ·•
/
·-.... /
Geosyntec t>
consultants
Written by: R. Flynn Date: 08/30/07
Client: Denison
Mines
Project: White Mesa Mill-
Cell 4B
Reviewed by:
Project/
Proposal No.:
Page 6
G. Corcoran Date:
SC0349-01 Task
No.:
Calculate the minimum required AOS and permittivity for filtration geotextile
component of strip drain
of 10
t'1-blo1
04
The geotextile serves as a filter between the strip composite core and the tailings
material. The geotextile minimizes fine particles of the tailings material from migrating
into the strip composite, yet allows water to penetrate. Migration of fine particles would
have the adverse effect of decreasing the transmissivity of the strip composite layer.
To be conservative in these calculations, the tailings material soil is assumed to consist
of more than 20 percent clay.
The retention requirements for geotextiles can be evaluated using the chait entitled "Soil
Retention Criteria for Steady-State Flow Conditions" developed by Luettich et al.,
(1991) (Attachment G, 1/3). This chart uses soil properties to evaluate the required
apparent opening size (AOS or 095) of the geotextile: Using the· Soil Retention Chait,
the AOS of the filter fabrics shall be:
095 < 0.21 mm, which corresponds to sieve No. 70.
The pe1meability of the filter fabric must be evaluated to allow flow through the filter
fabric. The following equation can be used to evaluate the minimum allowable
geotextile permeability:
(Luettich et al. (1991), Att. G, 2/3)
where: kg= permeability of geotextile (cm/s)
is = hydraulic gradient (dimensionless)
k,= pe1meability of the tailings material (emfs)
·Hydraulic Gradient, i, Attachment G, page 3/3 from Luettich et al. (1991) lists typical
hydraulic gradients for various geotextile drainage applications. In this attachment, a
hydraulic gradient of I 0 for liquid impoundment applications is recommended.
Soil Permeability, ks: A permeability of3.31 x 10·4 emfs was assumed for the tailings
material, as previously defined.
SC0349 -Slimes Drain Calc4B.20070830.doc
.. ·._.;
.... ''" -•• ·-·. -· ---·------------· _. ---· ·--·· .• -···-·-----·--··. ~--------. ---~·--. ~-.•.. -.,. --· -· ·-·-·-·-·········· ··-·---·.~·-·.··"-'·~·-•.-"-~-·-··,.,····-~ .-.-.... "•"·'-·-~.--· ..... -•• .,'"·"·'· ~ ... _,__ ........ ·.~,.,,.-."'j'
Geosyntece>
consultants
Page 7 of 10
Written by: R. Flynn Date: 08/30/07 · Reviewed by: G. Corcoran Date: 1-i-b/o?-
Client: Denison Project: White Mesa Mill -Project/ SC0349-0l
Mines Cell 4B Proposal No.:
Therefore,
kg> i, k, = (10)(3.31x10-4 emfs)
kg> 3.31 x 10"3 emfs
Task 04
No.:
Koerner (1999) suggests applying partial factors of safety to the ultimate flow capacity
of the geotextile to account for clogging of the geotextile. ·Using recommendations
given in Table 2.12 on p. 150 of Koerner (1999) (Attachment F, 1/4), the following
pa1tial safety values were applied:
soil clogging and blinding:
creep reduction of voids:
intrusion into voids:
chemical clogging:
biological clogging (low pH precludes biological activity):
Therefore,
kg>
kg>
(3 .31 x 10"3)(10)(2)(1.2)(1.5)(1)
0.12 emfs
IO (5 -10)
2.0 (1.5 -2.0)
1.2 (l.0-1.2)
1.5 (1.2 -1.5)
1.0 (2-10)
The thickness of a typical nonwoven needled punched 4 oz/yd2 (135 g/m2) geotextile is
approximately 40 mils (0.10 cm), see Attachment H. Dividing the permeability by the
thickness of the geotextile results in a required minimum permittivity of 1.2 sec"1, The
geotextile used in this project has a permittivity of2.0 sec·1, which is greater than the
required permittivity. ·
Check Pipe Flow Rate
Based on calculations from previous sections, the maximum daily flow rate to the stunp
is estimated to be 144 gpm (0.32 cfs) (Table 3). The capacity of the pipe is calculated
based on Manning's equation for gravity flow as follows:
Where
n = 0.010 (Koerner (1999), Attachment F, 4/4)
S =Slope of liner (ft/ft)= 1.0 %
SC0349 -Slimes Drain Colc4B.20070S30.doo
'
j.
F
! ' !
;:
. j
···~·-··
Geosyntect>
consultants
Page 8 of 10
Written by: R.Flxnn Date: 08/30/07 Reviewed by:
Client: Denison Project: White Mesa Mill -Project/
Mines Cell 4B Proposal No.:
Ri1 =hydraulic radius, ft
Q = flow rate, cubic feet per second, .ft3 /s
A = flow area, ft2
Assuming 4-inch pipe:
· A= n D2/4 = 12.6 sq. inches= 0.088 ft2
R1t =Area (n D2/4)/Wetted Perimeter (n D)
= D/4 = 1in=0.083 ft
G. Corcoran
SC0349·01
Q = 1.486 o.083%0.01Yzo.088 ft2 = o.2s ft
3
= 112 gpm
0.010 s
Date: 1'2-1!1~1-
Task 04
No.:
Since 112 gpm is less than the maximum required 144 gpm, this calculation shows that
the 4-inch diameter slimes drain pipe is the limiting factor for dewatering the tailings in
the early phase of dewatering (high flow rates). However, it does not mean that the pipe
will be unable to handle this flow, but rather the pipe will require additional time to
drain. The additional time needed is computed in the following section.
Effect of Maximum Pipe Capacity on Drainage Time
The maximum capacity of the pipe is 112 gpm, as computed above. Assuming the cell's
. total lateral length of strip drain is 27,550 feet, the flow rate, per foot of strip drain is
calculated to be:
Flow Rate = 112 gallon • 60 min * 24 hr * lft3 * 1
min I hr 1 day 7.48 gallon 29/)77 feet
The time needed to de-water first layer is:
0.72 ft'
day
Volume (50 x I x Ix 0.22) ft' Time= = Drain length x flow rate 1fix 0.72 ft3 15.27 days
day
The difference between the maximum daily flow rate drainage time and the maximum
daily flow the pipe is able to deliver for the first foot is:
15.27 day-11.93 day (first row of Table 3) = 3.34 days.
SC0349-Slimes Drain Calc4B.20070830.doe
" r !
'\
"
Geosyntect>
consultants
Page 9 of 10
Written by: R.Fl~nn Date: 08/30/07 Reviewed by: G. Corcoran Date: lib/o1
· Client: Denison Project: White Mesa Mill -Project/ SC0349-0l Task 04
1\-lines Cell 4B Proposal No.: No.:
Therefore, the first layer will require an additional 3.34 days to drain. The calculation is
repeated until the pipe's allowable flow capacity of 112 gpm is equal to the maximum
fl.ow rate from the cell (Table 3). The additional drainage time needed for each layer is
added to the original drainage time of5.45 years. The results of this analysis are shown
in Table 3.
The total additional drainage time occurs over the· first 12 layers and adds 23 days
(0.06 years) to the computed drainage time. Including the effects of the maximum pipe
capacity, the cell will take an estimated 5.51 years to drain.
Effect of Precipitation on Drainage Time
To account for the effect of precipitation added to the tailings cell, the HELP Model was
used to estimate the average annual leakage through a 3 foot thick (tailings above the
liquid) layer of silty sand material (Attachment I). HELP Model default parameters
were used along with a maximum 16 inch evaporative zone (conservative for dry
climate) and weather data from Grand Junction, Colorado. The model was performed
for a 10 year period and included precipitation events ranging from 5.83 to 10.36 inches
per year.
The results of this analysis suggest that a maximum average annual percolation through
the 3 foot soil layer above the liquid will be approximately 12 ft3 per acre or 504 ft3
(3,770 gal.) for the entire Cell 4B area of 42 acres.
The average flow rate during Cell 4B dewatering, as calculated from Table 3 is equal to
78 gpm (112,320 gallon/day).
The time required to drain the additional volume of precipitation in the tailing is
computed using the following equation:
3,770 gal 0.03 days
112320 gal
' day
Time Volume
Flow Rate
The additional time that the pond will require to empty due to precipitation is
insignificant.
. SC0349 • Sl!mes Drain Calc4B.20070830.doc
. ')
• ... ..
Geosyntec t>
consultants
Page 10 of 10
Written by: R. Fl~nn Date: 08/30/07 Reviewed by: G. Corcoran Date: 1~/]/k
Client: Denison Project: White Mesa Mill-Project/ SC0349-01 Task 04
Mines Ccll 4B PtOEOSal No.: No.:
Therefore, the estimated time to dewater Cell 4B will be 5.45 years (baseline)+ 0.06
years (pipe limitations)+ 0.03 years (precipitation)= 5.54 years.
REFERENCES
Cedergren, H.R., "Seepage, Drainage, and Flow Nets,'' 3rd Ed., John
Wiley & Sons, Inc., 1989
(Attachment D)
GDE Control Products, Inc. November 2006. Accessed 13 March 2007
<http://www.gdecontrol.com/Multi-Flow5.html>
(Attachment E)
Hydrologic Evaluation of Landfill Performance Model, Engineering Documentation for
Version 3, EPA, 1994.
(Attachment C)
Koerner, R. M., "Designing With Geosynthetics," 4th Ed., Prentice Hall, 1999.
(Attachment F)
Luettich, S.M., Giroud, J.P., and Bachus, R.C., (1991), "Geotextile Filter Design
Manual, report prepared for Nicolon Corporation, Norcross, GA.
(Attachment G)
Amoco Fabrics and Fibers Company, (1991), "Amoco Waste Related Geotextiles. ".
(Attachment HJ
SC0349 -Slimes Drain Calc4B.20070830.doo
.:.
;
i
SlwoNo. Dlttmeter(mm)
31n. 70.2
2•. 50.9
11J21n. 38.1
1 In. 25.4
3/4Jn. 19.1
1J21n.. 12.7
318in. 9,5'30
No.4 4.7.SO
No.10 2.000
. No.30 0,£00
No40 0.-<25
No,70 0212
No.100 0.150
No.200 0.07.S
No.325 0.045
""" -
51 ... Nc. Olismeter{mml
31n. 76.2
2"-SOE
11J21n. 3ll.1
11n. 2S.4
314in. 19.1
1.1211'1. 12.7
3181~ ·-No.4 4.750
No.10 2.000
No.30 0.600
""·"" 0.425
No.70 0.2t2
No.100 0.150
No.200 0.076
N<>.325 D.046
Poo -
%FINER-1oo~~A1NEO
Grirnilna Te!lt 1
Wt. ......... " · (grams) .......
0,0 0.0%
0.0 0.0%
0.D 0.0%
0.0 O.JJ%
0.0 0.0% o.o 0.0%
0.0 0.0% o.o 0.0%
0.0 0.0%
t.2 1.2% "'. -<6%
20.S 2!).6%
34.8 3<.9%
5'!.4 53.4% eo.s ...... --Grll'ldlriq Toct6A '·--·-"·-...... ,
0.0 o.o
0.0
0.0
0.0 o.o
0.0 o.o
OJ)
t.3
5.2
21.7
34.1 ....
59.7 -
100o/o
90%
~Wlo
~70%
U: 60o/o
1-
2503 w }i40%
w c. 30%
20%
10%
0%
1000
.
"""'""" OJ)"
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
0.0%
1.3%
5.2%
21.7%
... 1%
54.4%
59.7% -
% Finor
100,0%
100.0%
100.0%
100.0%
100.0%
100.0%
1-00.0%
100.0%
100.0"A> ......
95.4%
79.2%
66.2%
46-6%
39.!i% -
%Finer
~00.0%
100.o%
'"""" 100.0%
100.0%
tOO.D%
100Jl%
100.D"A.
100.ll%
SS.7%
""'°" 7ll.3%
65.9%
45.0%
40:3% -
100
.... ----·· ---~--~.·-
Table1
DSM Screen Undersize Gradation
SIEVE ANAL YS!S
Grinding Test 2A Grinding Test 28 Gri--Test3A Grilldlnt:Tost38
wt. Rtll:alned % Wt. Retllne<t % wt.Ro-% WL_. ... " (gr.ams) """""' %Fine: <si=> ~ %Fine (g-) _ .... %Ano: (g-) -%Finer
0.0 0.0% 100.0% 0.0 0.J)% 100.0% o.o 0.0% 100.0% 0.0 0.0% 100.0%
0.0 O.Jl% 100.JJ% 0.0 OJ)% 100.0% 0.0 0.0% 100.0% o.o 0.0% 100.J)%
0.0 0.0% 100.0% O.JJ 0.1>% 100.0% 0.0 o.0% 100.I)% OJ) 0.0% 100.0%
0.0 0.0% 1.00.0% 0.0 0.0% 100.0% 0.0 o.0% 100.I)% OJ) 0.0% 100.0%
0.0 O.JJ" 100.°" 0.0 0.0% 100.o% 0.0 -100.0% O.JJ 0.0% 100.0%
0.0 0.0% 100.0% 0.0 0.0% 100.0% 0.0 0.0% 100.0% 0.0 0.1)% 100.000
0.0 0.0% 100.0% 0.0 0.0% 100.0o/o. OJ> 0.0% 100.0% 0.0 "·"" 100.0%
OJ) OJ>% 10G.0% 0.0 0.0% 100.0% 0.0 OJ>% 100.0% 0.0 ..... 100.0%
0.0 ..... 10G.ll% 0.0 0.J)% 100.0% 0.0 0.0% 100.0% 0.0 OJ>% 100.0%
2.0 2.0% 98.0% t.7 1.7% 98.3% 2.4 2.4% .,..,. 1.9 1.9% ... ,,.
7.3 7:3% 92.7% 6.0 6.0% 94.0% S.1 S.1% ,, .... ... ...,. 93.t%
24.S 24.8% 75.5% 22.6 22.6% 77A% 28.2 26.2% 73.8% 27.9 27.9% 72.1%
38.1 38.1% 61.9% 35.S 38.9% ...... 41:0 41.0% 55.0% 43.9 ..,..,. 5&t%
55.7 55.7% "4.3% 52.S .52.5% 47.5% 56.6 58.6% 43.4% 67.4 67.4% 42.6%
62.7 62.7% 37.3% SB.a ""'" 41.2% ., .. 62.5% ST.5% 61.9 61.9% 38.1% ---. --------GMdlng Tost6B Grlnd!n<rTtrst4A GtlndlMTm4B . " ····--·--" klrams) -.ood %Finer ...... , Rotaloed %Fbltrr <grams:.) Rmlm>d %Fl ....
0.0 0.()% 100.0% o.o 0.0" 100.0% 0.0 0.()% t00.0% o.o 0.0% 100.0% 0.0 0.JJ% 100.0% 0.0 D.0% t000%
0.0 0.0% 1000% 0.0 O.JJ% 100,0% 0.0 0.0% 100.0% o.o O.JJ" 100.0% 0.0 0.0% 100.0% o.o 0.0% 100.0% o.o 0.0% 100.0% 0.0 0.0" 100.0% o.o O.D'6 100.0%
0.0 0.0% 100.0% 0.0 0.0% 100.0% 0.0 0,0% 100.0SI.
0.0 0.0% t00.Jl% 0.0 0.0% 100.0% 0.0 0.0% 10().0%
0.0 0.0% 100.0% OJ) 0-"" 100.0% 0.0 0.0% 100.0% o.o 0.0% 100.0% 0.0 0..,,. 100.0% 0.0 D.0% t00.0%
t.O 1J>'6 ...... 2.7 2.7% 97.'3% 2.7 2.7% 97.3%
'1.7 47% "53% 7.J5 7.6% 92.4% 7.3 7.3% 92.7%
21A 21.4% 78.6% 28.2 29.2% 73.9% 25S 25E% 74..1%
35.9 ...... 64.1% 3ll.7 613% 39.2 39.2% ......
5"'4 54.4% 45.6% ""' 673% "2.7% 5ll3 5ll.3% 4t.7%
61.t 61.1% 3ll.6% .... .... ,. """" 6"'6 ...... 35.4% --·---. ---
Co,,.. Modlum -Silt Cloy &md Sand Sand ~
~
6.4%
Sitt 44.4%
1
~
10 0.1 0.!)1 0.001
GRAIN DIAMETER (MM)
-.~\
' ..... -.-·
Soll
med sand
fine sand
silt
silty clav
averaae
geomean
Soll
SM ILS\
SM (LFS)
SM ISL\
SM IFSL\
ML(Ll
ML7SiLl
SC (SCL}
averaae
geomean
Notes:
Table 2
Tailings Parameters
Permeability111 Drainable Poros1ty<2>
(cm/sec) (vol./vol.)
2.00E-02 0.35
1.00E-02 0.29
1.00E-04 0.14
6.00E-07 0.11
7.53E-03 0.22
3.31E-04 0.20
Permeability<•> Drainable Porosity<»
(cm/sec) (vol./vol.)
1.70E-03 0.332
1.00E-03 · 0.326
7.20E-04 0.263
5.20E-04 0.261
3.70E-04 0.231
1.90E-04 0.217
1.20E-04 0.154
6.60E-04 0.253
4.74E-04 0.246
(1) Source -"Seepage, Drainage, and Flow Nets", Cedergren, H. R.,
1989.
(2) Source -The Hydrologic Evaluation of Landfill Performance
(HELP) Model, Version 3, EPA, 1994 -Figure 2 -Soii texture vs.
Moisture Retention.
(3) Source -The Hydrologic Evaluation of Landfill Performance
(HELP) Model, Version 3, EPA, 1994 -Table 1 -Low Density Soil
Characteristics.
; j-
,.
L'
!.,_
::-
' ! ' '
Permeability Permeability Drainage Path Thickness
{cm/sec) (ft/min) Length {ft.) (VF)
3.31E-04 6.51E-04 46.3 39
3.31E-04 6.51E-04 45.8 38
3.31E-04 6.51E-04 45.4 37
3.316-04 6.51E-04 45.0 36
3.31E·04 6.51E-04 44.6 35
3.31E-04 6.51E-04 44.2 34
3.31E-04 6.51E-04 43.8 33
3.31E-04 6.51E-04 43.5 32
3.31E·04 6.51E-04 43.2 31
3.31E-04 6.51E-04 43.0 30
3.31E-04 6.51E-04 42.8 29
3.31E-04 6.51E·04 42.6 28
3.31E-04 6.51E-04 42.4 27
3.31E-04 6.51E-o4 42.3 26
3.31E-04 6.51E-04 42.2 25
3.31E-04 6.51E-04 42.1 24
3.31E-04 6.51E-04 42.1 23
3.31E-04 6.51E-04 42.1 22
3.31E-04 6.516-04 42.1 21
3.31E-04 6.51E-04 42.2 20
3.31E-04 6.51E-04 42.3 19
3.31E-04 6.51E-04 42.5 18
3.316-04 6.51E-04 42.6 17
3.31E-04 6.51E-04 42.8 16
3.31E-o4 6.51E-04 43.1 15
3.316-04 6.51E-04 43.3 14
3.31E-04 6.51E-04 43.6 13
3.31E-04 6.51E-04 44.0 12
3.316-04 6.51E-04 44.3 11
3.31E-04 6.51E-04 44.7 10
3.31E-04 6.51E-04 45.1 9
3.31E-04 6.51E-04 45.6 8
3.31E-04 6.51E-04 46.0 7
3.31E-04 6.51E-04 46.5 6
3.31E-04 6.51E-04 47.1 5
3.31E-04 6.51E-04 47.6 4
3.31E-04 6.51E-04 48.2 3
3.31E-04 6.51E-04 48.8 2
3.31E-04 6.51E-04 49.4 1
Avera SOil Porositv 0.22
Geomean Soil Pernieabilitv 3.31E-04 cm/sec
Distance Between Drains w ft
Thickness of Unit 1 ft
Maximum De 39 ft
LPJ10n1 of $trio Drain 29,977 ft
SC0349.Slimes Drain Drainage4B.20070904.xls
~ ..
TlibdS3
White Mesa Mill
Cell 4B Slimes Drain
MaXimum Liquid Depth
Volume of Time to
Q (elm/ft) Liquid Dewater
ICF/ft) fminfVFJft\
6AOE-04 11 17,185
6.31&04 11 17,446
6.19&04 11 17.761
6.086-04 11 18,094
5.96E-04 11 18,446
5.85&04 11 18.818
5.73&04 11 19,213
5.596-04 11 19,677
5.456-04 11 20,172
5.30E-04 11 20,748
5.156-04 11 21.363
4.996-04 11 22.023
4.846-04 11 22.731
4.676-04 11 23,550
4.50&04 11 24,434
4.33&04 11 25.392
4.15E-04 11 26,496
3.97E-04 11 27,700
3.79E-04 11 29,019
3.60E-04 11 30,543
3.41E-04 11 32.226
3.22E-04 11 34.178
3.03E-04 11 36,273
2.84E-04 11 38,721
2.64E-D4 11 41.592
2.46E-04 11 44.770
2.27E-04 11 48,548
2.07E-04 11 53.076
1.89E-04 11 58.296
1.70E-04 11 64,704
1.52E-04 11 72.537
1..33E-04 11 82.509
1.16E-04 11 95,123
9.81E-05 11 112, 183
8.07E-05 11 136,357
6.39E-05 11 172,255
4.73E-05 11 232,569
3.11E-05 11 353,196
1.54E-05 11 715,076
J:.2:~\x:::.,1:1a··:·
~~~~.:t-1~1:~9,@ij:
Time to To!alFlow Volume Removed Pipe
Dewater Limitation
lda~NF/ftl Rafa (gpm) (gal) fd-·s\
11.93 143.54 2.466.685 3.34
12.12 141.39 2,466,685 3.15
12.33 138.88 2.466.685 2.94
12.57 136.33 2,466,685 2.70
. 12.81 133.73 2,466,685 2.46
13.07 131.08 2,466,685 2.20
13.34 128.39 2,466,685 1.93
13.66 125.36 2,466,685 1.61
14.01 122.28 2,466,685 1.26
14.41 118.89 2.466,685 0.86
14.84 115.46 2.466,685 0.43
15.29 112.00 2,466,685 <0.02
15.79 108.51 2,466,685
16.35 104.74 2.466,685
16.97 100.95 2,466685
17.63 97.14 2,466,685
18.40 93.10 2,466,685
19.24 89.05 2,466,685
20.15 85.00 2,466.685
21.21 80.76 2.466.685
22.38 76.54 2.466.685
23.73 72.17 2,466,685
25.19 68.00 2,466,685
26.89 63.70 2.466,685
28.88 59.31 2,466,685
31.09 55.10 2,466,685
33.71 W.81 2.466,685
36.86 46.47 2,466.685
40.48 42.31 2,466,685
44.93 38.12 2,466,685
50.37 34.01 2.466.685
57.30 29.90 2,466,685
66.06 25.93 2,466,685
77.90 21.99 2,466,685
94.69 18.09 2,466,685
119.62 14.32 2,466,685
161.51 10.61 2.466.685
245.27 6.98 2,466,685
496.58 3.45 2.466,685
:J::~w~;sa.SJ.tSBi: 96,200,703 22.86
~~':~Zii1.~(..~i:':~f§:$"~
9/4/2007
_.,,,., .........
..-·-··.
·· .. / ··...__,
Permeability
(cm/sec)
3.31E-04
3.31E-04
3.31E-04
3.31E-04
. 3.31E-04
"3.31E-04
3.31E-04
3.31E-04
3.31E-04
3.31E-04
3.31E-04
3.31E-04
3.31E-04
3.31E-04
3.31E-04
3.31E-04
3.31E-04
3.31E-04
3.31E-04
3.31E-04
3.31E-04
3.31E-04
3.31E-04
3.31E-04
3.31E-04
3.31E-04
3.31E-04
3.31E-04
3.31E-04
3.31E-04
3.31E-04
Permeability
(ft/min)
6.51E-04
6.51E-04
6.51E-04
6.51E-04
6.51E-04
6.51E-04
6.51E-04
6.51E-04
6.51E-04
6.51E-04
6.51E-04
6.51E-04
6.51E-04
6.51E-04
6.51E-04
6.51E-04
6.51E-04
6.51E-04
6.51E-04
6.51E-04
6.51E-04
6.51E-04
6.51E-04
6.51E-04
6.51E-04
6.51E-04
6.51E-04
6.51E-04
6.51E-04
6,51E-04
6.51E-04
Averaoe Soil PoroSilV
Geomean Soil PermeabilitY
Distance Between Drains
Thickness of Unit
Averaae Depth
LenQth of Strip Drain
Drainage
Path Length
(ft.\
43.0
42.6
42.3
42.0
41.7
41.4
41.2
41.0
40.9
40.8
40.7
40.7
40.7
40.7
40.8
40.9
41.1
41;3
41.5
41.8
42.1
42.4
42.7
43.1
43.6
44.0
44.5
45.0
45.5
46.1
46.7
0.22
3.31E-04
50
1
35
29,977
SC0349.Slimes Drain Drainage4B.20070830.xls
:·-.... ·····-·· ______ , ... , ............ ·······-· ······ ...
Thickness
(VF)
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
cm/sec
ft
ft
ft
ft
veraae iauid Dett
TA:bi::~4
White Mesa Mill
Cell 48 Slimes Drain
A L h
Volume of
Q (cfm/ft) Liquid
ICF/ftl
6.19E-04 11
6.07E-04 11
5.93E-04 11
5.79E-04 11
5.65E-04 11
5.51E-04 11
5.35E-04 11
5.19E-04 11
5.02E-04 11
4.84E-04 11
4.67E-04 11
4.48E-04 11
4.29E-04 11
4.11E-04 11
3.91E-04 11
3.72E-04 11
3.51E-04 11
3.31E-04 11
3.11E-04 11
2.91E-04 11
2.71E-04 11
2.51E-04 11
2.31E-04 11
2.12E-04 11
1.92E-04 11
1.73E-04 11
1.54E-04 11
1.35E-04 11
1.17E-04 11
9.89E-OS 11
8.14E-05 11
Time to
Dewater
lmin/VF/ft\
17,784
18,137
18,555
18,999
19.472
19,976
20,565
21,196
21,927
22,715
23,566
24,548
25,615
26,779
28,123
29,602
31,312
33,213
35,337
37,817
40,627
43,839
47,546
51,990
57,375
63,691
71,572
81.423
94,089
111,218
135,199
~<~;~;;:;~~~.~
~t;~~-~~··:)):'~;y;~~ .
Time to
Dewater
ldavsNF/ft\
12.35
12.59
12.89
13.19
13.52
13.87
14.28
14.72
15.23
15.77
16.37
17.05
17.79
18.60
19.53
20.56
21.74
23.06
24.54
26.26
28.21
30.44
33.02
36.10
39.84
44.23
49.70
56.54
65.34
77.23
93.89
~~il:S:{o.~f,i·;i;~~~f.
~i:S~.\'..'.f(~·~:·~g~;
. l..,.·,. . . ·'
'·".
Total Flow Volume Removed
Rate(gpm) (gal)
138.70 2.466.685
136.01 2,466,685
132.94 2.466.685
129.83 2,466.685
126.68 2,466,685
123.48 2,466.685
119.95 2,466,685
116.38 2.466,685
112.49 2,466.685
108.59 2,466,685
104.67 2.466,685
100.49 2,466.685
96.30 2,466,685
92.11 2.466.685
87.71 2.466.685
83.33 2,466,685
78.78 2,466,685
74.27 2,466,685
69.81 2,466,685
65.23 2,466.685
60.72 2,466.685
56.27 2,466.685
51.88 2,466,685
47.45 2,466,685
42.99 2,466,685
38.73 2.466.685
34.46 2,466,685
30.29 2,466,685
26.22 2,466,685
22.18 2,466,685
18.24 2,466,685
76,467,226
·.·\
'.
8/30/2007
.........
/ ...
Permeability Permeability Drainage Thickness Path Length (emf sec) (ft/min) I ft.I (VF)
3.31E-04 6.51E-04 39.8 31
3.31E-04 6.51E-04 39.6 30
3.31E-04 6.51E-04 39.4 29
3.31E-04 6.51E-04 392 28
3.31E-04 6.51E-04 39.1 27
3.31E-04 6.51E-04 39.0 26
3.31E-04 6.51E-04 38.9 25
3.31E-04 6.51E-04 38.9 24
3.31E-04 6.51E-04 39.0 23
3.31E-04 6.51E-04 39.0 22
3.31E-04 6.51E-04 39.2 21
3.31E-04 6.51E-04 39.3 20
3.31E-04 6.51E-04 39.5 19
3.31E-04 6.51E-04 39.8 18
3.31E-04 6.51E-04 40.1 17
3.31E-04 6.51E-04 40.4 16
3.31E-04 6.51E-04 40.8 15
3.31E-04 6.51E-04 41.2 14
3.31E-04 6.51E-04 41.6 13
3.31E-04 6.51E-04 42.1 12
3.31E-04 6.51E-04 42.6 11
3.31E-04 6.51E-04 43.1 10
3.31E-04 6.51E-04 43.7 9
Averaae Soil Porosity 0.22
Geomean Soil Permeabilitv 3.31E-04 cm/sec
Distance Between Drains 50 ft
Thickness of Unit 1 ft
Maximum Depth 31 ft
Lenath of striD Drain 29,977 ft
SC0349.Slimes Drain Drainage4B.20070830.xls
................... :-·-·-···:· ... .;,:~·:rr. :·
T~Eltl5
White Mesa Mill
Cell 48 Slimes Drain
Minimum Liquid Depth
Volume of Time to
Q (cfm/ft) Liquid Dewater
ICF/ftl lminNF/ftl
5.92E-04 11 18,584
5.76E-04 11 19,107
5.59E-04 11 19,666
5.43E-04 11 20,265
5.25E-04 11 20,962
5.07E-04 11 21,713
4.88E-04 11 22,523
4.69E-04 11 23.462
4.48E-04 11 24,545
4.29E-04 11 25,661
4.07E-04 11 27,020
3.87E-04 11 28,444
3.66E-04 11 30,093
3.44E-04 11 32,006
3.22E-04 11 34,145
3.01E-04 11 36,550
2.79E-04 11 39,373
2.58E-04 11 42,599
2.37E-04 11 46,321
2.17E-04 11 50,784
1.96E-04 11 56,059
1.76E-04 11 62,388
1.57E-04 11 70,285
1~(;;.,;-.:~"ii:;~i~~ijgyls.,
;:~.';;,~~::t.t;?~tf~
Time to Total Flow Volume Removed Dewater
lda=NF/ftl Rate (gpm) (gal)
12.91 132.73 2,466,685
13.27 129.10 2,466,685
13.66 125.43 2,466,685
14.07 121.72 2,466,685
14.56 117.67 2,466,685
15.08 113.60 2,466,685
15.64 109.52 2,466,685
16.29 105.14 2,466,685
17.05 100.50 2,466,685
17.82 96.13 2,466,685
18.76 91.29 2,466,685
19.75 86.72 2,466,685
20.90 81.97 2,466,685
22.23 77.07 2,466,685
23.71 72.24 2,466,685
25.38 67.49 2,466,685
27.34 62.65 2,466,685
29.58 57.91 2,466,685
32.17 53.25 2,466,685
35.27 48.57 2,466,685
38.93 44.00 2,466,685
43.33 39.54 2,466,685
48.81 35.10 2,466,685
·,:'i .... :-:' .. .:.~.-~~,§:;,~~\ 56,733,748
tj.t~ :~~'.;;;~J~;\_:i'.:, '~(.~l~~
8/30/2007
. ··:.: .. _;/
EXISTING CELL 3
300
SLIMES DRAIN LAYOUT
CELL 48
BLANDING, UTAH
,,.·· .
flGURE Geosyntect> DATE: sEPTEMBER 2007
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COLORADO SCHOOi. Of MINES AUEARCH INSTITUTE
EXBIBlT 1
SAMPLE DESCRIPTION AND PREPARATION
CSMRI Sample 1
Sponsor's Designation of
Sample: Run-of-mine,
Date Received at Institute: .Tune 5, 1978,
Sample Weight;
Sample Containeri
Sample Description:
Method of Preparation:
100, 5ZO lb,
Two truckloads,
Mine ore •• estimate 5% + 10-in, material,
Largest b01:ilder --48 in, x Z4 in, x 14 in,
Only two or three rocks were greater than
36 in,
All +10-in, material broken to -10 in, by sledge-
hanuner and jackhammer, The sample was
screened at 6 in. and 1-1/Z in, with the +6 .in,
fraction, put in barrels, and the -1/Z in, frac-
tion piled, The -6 in, +l• l/Z in. material was
screened at 4 in, and 1-1/Z in, with the -6 in,
+4 in, and -4 in, +1· l/Z in, fractions barreled,
The additional -1-1/Z in, fraction was piled
with the previous -1-1/2 in, fraction, A screen
size analysis of the entire quantity of mill feed
matel'ial is presented in Exhibit 3, A summary
screen size analysis of the ore is as follows:
Screen P1•oduct
in,
Head (calculated)
-10 +6
-6 +4.
-4 +l-1/Z
-1-1/2
Weight
%
100.00
2,92
9.48
15.30
7Z.30
-·1
.Cl_
. 'J
: __ /
:1
:'I
n I,
rJ
:·1
u
q L
~. qi , ....
;1
!·1
1 •.
i] c.
'.J
u
n •.
]
... 1
)
· .... .-'
J
CO~ORADO SCHOOL OF MINES RESEARCH INSTITUTE
Sponsor's Designation 0£
Sample:
EXHIBIT l
CSMRl Sample Z
Crushed ore.
Date Received at lnstitute1 June 5, 1978,
Sample Weight:
Sample Container1
Sample Desc:dption1
Method of Preparation:
47, 380 lb,
One truckload,
Ore previously crushed to -3 in,, maximum
particles approximately Z-1/Z in.
The ore was used as received.
i
,, .... --.
,,,,,..
E~-!og
Ru1111.in(l'. .,,... Muto:r oe
Clod< """" ll.ovolaticmu X-11.diri.g T.,,.,.
T<m• ---gou:./:rev ~__z_
0910 • 104
091.S ' 12:,2 12,964
lOOS " '·' 1030 so 6~8 JDS
11.00 llO •• 5 12•971 "' ll35 14'
114Z 145 mo 15> '·' "' lZSO "' 6.0 12,'388 lll 1301) = 6.Z m
13<5 "' 1400-"' 6.4 m
1415 "' '·' 13,004 m
.t\.~l'~(I
-· Food~. stph: -DSM~. in. Widtbf
J:>SM.~QQpai:dl:lg', ~
MqoUl'od M£ll Power T~ {oi:i::i.¢y :=m), kw1.
C~eh:d ).(ill PO"NU Tu<: {«mpty mill), ~
Q:ro Jlood Rate !M ~~CI) ""' Swc.;o .$=ceQ O!c~o ...... -6 :il:i. -10 1n.. """""""
J'WUI 13. 1978
' ltW'k--o!-ml:=
lZ
l.27 .... o.6
PSMS..... °""'..,..... OVa.."":!lew Uride....~
-1-l/2 it:>. +l-1/2. in. ...... ..... Solid• """"' "°""' "'"" SOlid< sou .. ..-"""""
><ill
MlllW-Lead ..... , ·-v.,,._
~ lb/l>:o .:f2D2:. ~ _,.L .lli!!:. --lL ~ J_ ~ ....!L ~ J_ lM2:. _J_
3, 150 '"' ,., 116 63 S,33S 2 61"6(2.) .. 2.s~
2 .. &ao '1Z ,., "' 6Z 90 , .. so 3,348 57 .. 2-6$8
2,83S ... 3'0 11' " 90 '" 70 3,591 ,. • no(Z) ,. z,asa
:Z,993 6lZ "' "' " " 4.,':Zl SS '"""' ., z,S<O
2,993 '1Z '" "' " u:.-szo 90 l.U.1' ,. ..... .. Z,S8$
Z,903 61Z '" ll6 .. 10,829 90 405 •• 6 .. 955 " 4',J88 7:5 Z,382
3,319 ,,. '" ll6 " ll.Z>Z ,, 365 ,. 6,0i8 60 3,861 81. z,:;n:
s, lZS "" 380 116 " 11, 700 ,, lZZ " s .. zz.9 60 3,996 •• 2,5'Ji0
2. 2'10 m .w. .lli. Ii§. ~ 2£ --"!!. Zl. ~ a ?..C'j07 :t:I. 2.509 lS
3,019 '"' ,.. "' " 10.744 90 <SO 69 4,SS'7 " S,547 ., .....
·~""
""""'--
Mm dowu. Olevnt~~t!.. ....,. ""'1.
Pump p'luJgiid. DSM 1-ot. --·
(1) M¢'..6t=c: -1~1;2 in., 2.B'1o; -4 hi. +l-1/% 1u., l.O'i'.: -6 !n. +'*ta. •• c • .es: ~10 !n. +6 iii., o.~ A'll'o.ngo d:y o= !.~ "'al:a1 -l-l/21.1:1., :Z, <)34.5 ll>~ -4. iQ, +1~112 i.'o •• &oS.9 lb/hr• -6 ii:t. -K :tl:i...,
376.8 l"o/hr; -10 'i,n. +'-tQ •• llS.O ll;J.~ total., 4,0Jl!:.Z lb/k, z.016 ~ atph. Mm. vol= .,a,d of kst: 15%.
Gil Excl.11ded *=v.~-
Fe4d btc, •tpll cb-n Z.016
B::ill Ch=go: ?(0119
Cor;oactedMID.P<!Wln:TQ'V(~mDl), lcw: 0.6
!rir~owi :r:u.~oa11 C~d ~
0:::01111 :Pcwnr )?ewer . eo .... ampt:lou
(l»oto,: ;r~g) (!:r= 1tip11to-0Wp11t c:=vot C:t'OU' Net --""""'="'-------~-=~---1e-ollu-/11t kwl=>/ct
0910 0
""" 5 )2.Z ... , .... 1.31 1 .. 01 ..
100$ " 8.7 .... ".ZS z.u 1.81 6Z
. 1030 so ••• -1.-6% S.80 z-.as . Z..58 " 1100 110 '·' 1.91 6.10 '·" Z.73 " 11)5 145 Z.'11~) ~\iii bo~t .W..Vlltm:.
1150 "' 6.Z 3.36 t..47 3.Zl 162 .. 0 " lZSO "' ••• . ... '·"" 3.3' '-°"(.2} ""·' ..
lSIJQ = 6.Z .... 6.47 3.21 z.11f2) 145.0 6S
l34S Z3' z:;.,tz) 'Oripl~ D:$M !oed pump.
lol-!)0(3) "' 6A s.10 '·" .... 19.0 6S
HilS(J) ... '-' .. ., '·" '·" .!:!!(Z) ~ ..
.Jt."o:ngo z.90 o~.s
(l) Catcak!:cdc Su.m. o! Sw=o ove:r"ld:lo tmc! PSM. ~ u-pe,rcoatage >;S'.( iJxy :mill !ocid.
(Z) Ave:i:q:e!o:i:,po'll'l:J.:i:(Wt:.G.ve.~p.}: %.'90kw:hr/st.
(3) "-"'=·
· ·····-·--····· .. -····7·r.-··:-. -c· .. -·:·· ..... -.. -· . · .. -
~ • •
:·1
''"l -.!..,
\ .)
,• •.-·
q I,•
:·1
r·1 ;, l
' l
u
n
ri ..
. .q .\
j
n
' I ·;
p u
q " q L
u
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i -\ ·' . ·--.. ·
d
" " -· -•---·-· -·-····-··-•··-····-···" • ••·•·• • • ···• --•-•·--~-~· •· ·"'• •·•• • • ·~• ••• ••·· •••-•·•-•"·-·-•-•-·-•-• •-•-.•-•~.•.·_,.-.•.•.-.'C.><.-·.·:•<.0•.,; '""-•·M~•-·"-> ·~ ~·-· L«.>•""•~"~·-·_,_,,c-, ·,c,•.>.·.·,•.~~c··,•,·,·.,_•,·.::•.
COLORADO SCHOOL OF MIN&S RESEARCtt INSTITUTE
EXHlBlT ll
Grinding Test l --continued
Procedure: Sample was wet screened on a 3Z5M screen, products dried,
and the +325M material dry screened using a Ro-Tap for 30
min,
Screen Si'lle Analysis /
DSM Screen !
Teat J?roduct Undersize
Sample Time: 1415
Sample Weight, g1 4, 630.5
Screen :Product Weight US )li;.vf:
(Tyler) Mesh %
Head (calculated) 100.0
+28 1.2 No. '3t:>
-ZS +35 3.4 No. 40
-35 +65 16,Z /Jo. 10
-65 +100 14. 0 Ne>. l!W
-100 +zoo 18,6 No. u:o
-zoo +325 7,1 No. '3 2.6
-325 39,5
(}TC
5)10)07-
i·
······. . ·.
'· . '-·~ \~-. .__.i-: r·--·-
""""""' Dl.::sc
Cl.ook
_,
;ao:tVOJ.utio:u1 = ~ ::.eel%ev
!040 0 8.7
1110 30 s.z
1130 so '·' 1200 80 s.o
l2•o llO ••• l>OO 140 ••• l.330 170 ••• 1.'1100 zoo .. ,
l4il5 Zl5 s.o
1430 zzo s.o
Aver.38'0
.-··-........_,
,,_
r·~ ~\~
=·
.Jc11:10 l", 1978 z.o
Rnn-o!-:c:iine
r····., c...;_i ...... "l _,,
Feed .Ratei,. stpb:
0.-o,
B~Charge:
-1-1/2 in. +I in. Eal.ls. lb:
'Xo~ 301 .. 8 lb; z,-~ mill volm:ru:
114. .. S -:z. iu... +l-1/2 i;11,, :BQlls, lb:
3 in. Balls, Ib:
DSM Seroen, ill. ~
DSM Sc~ Ope~, n:i:=.
151.3
36.0
12
l.Z7
Mea.scrcd Mill P~ "rue (c::c.pty mill), l:;w;
Co=ected :Mill P<i~r 'r:o (empty x:cill), kw:
Z.06
0.6
M!ll.-
Bea.rin& O:'~ F-ct RUe (M rocoived)(l)
Mctc.r on ....... m.. -6 in.. -10 m.. R~ Toxnp. -1-1/Z. iu.. +1-l/Z i-;,_. i4 in. +6 ic..
~ __:E.._ lh/b;' Thf?n: lb/b.T lb/Jl):'
13,004 102 612 3SO ll6
!01 6lZ 380 116
106 $.060 .,. 3SO 116
108 ..... 61Z 380 116
13,0~ lll 3,.105 61Z 380 116
1l2 3, 139 612 380 ll6
113 3,2.63 612 380 116
113 Z.981 6tz 380 116
U3 Z,869 6l.Z 3SO 116
ll,044 U3 Z,993 ill. ~· .lli.
3,03Z 6l.Z 3SO ll6
Mill Sweco Sererllti.
Dioeh;uogc O'l"e:nm::G
SOldAc Solids Selids Solids
~~J_~
6z S.I47 50 248
63 6;s11 67 6S3 .. s.467 .. 6os
63 6.9'17 .. >91
66 8,494 .. 595
66 9,029 .. 6Z4
66 10,098 .. 5'1
~ s.483 !i m
65 S.'l.77 .. szs
Sol:idll Solldri _ .. _ Th/U
1< 1,565
71 lp 150
73 11ZS.l
73 z.1oz
69 :s.sn
71 Z,939
70 3,119
.ll 3.259
n z.373
DSM ~n l4ill Mill
tT:ide:dl-ow w~ Load
Solids: Solido ::Mcrt4r :R.:M:o Vc:il.a=A
J_ ..JYl=_ J_ ~ _j\_ .. 3,017
z,9G;ci> 83 Z,636
54 s• Z,668
8Z Z,604
8Z ..... ,., 3,6941 81 ··= 56 3.,SSl 81 z,s-zz
SS 3.680 81 z.s-n
SS 3,811 .,. Z,SOCJ
E 3.SbS JS. Z,509 '
57 3,.7Z6 83 Z.626
(1) Moist~G:: -1-1/Z icl; .. , z.a,:,; -4 in. +1 .. 1/Z. in.., l.O"/.: -6 ~ +" :t=. ... 0,.8,;.; -10 in. +6 in •• 0-7% .. A~o.p:: d:r:y Q%C. :Coed X'~ -1-1/Z :1:1 •• Z,947.0 D>r.iw. _.,, ~. +l-l/Z i:a., 605•9 lb~
-6 it:. +4 in., 376.:& lb/hr: -lO in. +bin •• llS.O lb/la';~ 4:,0M .. 7 lb{b:r, z .. ozz dry .st;pl:L. Mm. volm::ne cnol o!. test: 9% ..
(2) Exc:'!.l:lA:cd. :!rom :.ver.i.g&.
Feed Jta.t¢.. at:ph dzr. z..022
:S.dl~e: 301.s lh.z~mm.~
Cone~ Mill Pow~ T~ (~ ~} .. kw: o.6
Icota.c.tancOtlliil ~C# Cc:tn"Olcia~ Power
RutLcillg Dioc Gros11 POWC% "~" Co1U1m:o.;etion
Clock -. RovciI:iti.oO.ll (:inetll!r' %C;wling) {fr=. input-®tpttt ci:u:ve) .,. ... Net
~ ~ sec£-rev """" kw"' lcWh/.:t kw'h/r:t
lll40 0 .. , 5 .. 9.6 .... z. .. 09 1 .. 79
1110 30 s.z 9.91 7 .. 93 S.9Z 3 .. 63
1130 50 ••• '·.,. 7 .. 78 3.as 3.55
1200 so s.o I0 .. ,6 s.zs 4 .. os 3.78
1'30 110 ••• 10 .. 80 8.63 4 .. Z7 !f.'37
1300 l<O ••• Iii.SO s.63 4.2.7 3 .. 97
1330 170 <.S l<l .. 80 S.63 4 .. 2.7 3 .. 97
1400 200 .. , 10 .. 58 a • ..;4 4: .. l'1 3 .. SS
141SC3l .,. 5.0 10 .. 36 s.zs 4 .. 08 3 .. 7&tzl
1430(3} Z30 s.o 10.36 s.z.s 4 .. 0S 3 .. "l&(Z)
.ave~e .. 78
{ Q C.U.Cul:.i.tW: Smn or SWeco .o"VOrsi=e ;oi.od DSM ovw#izc ns: a. percer.t;:i.ge d *'Y mill :!eed.
{Z) Ave:rci.go :1'.crr ll'l)"!:l:IU" {l:2st two rca.&p): 3 .. 78 ~'b:r:/d.
(3) .s=nple ::i=cn,.
(4) Omittcd.i:roXn a.ven.ge ..
··---~-·--· •,':•
Circula.tiuz
I.ozd
Weight%
dFecd(ll
s;:o<"'> 9s .. o
S'l ... O ....
~
91 .. a
Mlll ""'""""'o Soli .. ..
6Z
63 .. •• 66
66 ..
6S
-:'".'"""• .. ' ...... ,_ .. , ........ .
• 0 ~ > • 0
~ • • ~ • ' • ~ : = > • • • " = " c :
..
!' ......... , : .. : .. : :>~ ... 1
~
~·~........ ,.--'!! ; '4 t.---·1 ;:____,'. ---~ \ . .__,,;,__, ._..
EXHIBIT Z
Grinding Test Z --continued
0
0
Procedure: Sa.m.ples were wet screened on a 325M screen, products dried, and the +3Z5M material dry .-
0
.screened using a Ro-Tap for 30 min. "' ,,.
" 0 Screen Size .Analysis .,
Sweco Screen DSM Screen DSM Screen Circulating " :r
Test Product Mill Discharge Oversize Oversize Undersize Load 0
0 .-
Sam.ple Tilne 1415 1430 14i5 1430 1415 1430 1415 1430 0 ... Saniple Weight, g: 1, 058.8 1,Z06.6 669.3 979.0 915.6 l, 106. 8 888.l 93Z.3 ;i: z
Screen Product Weight Weight Weight Weight Weight Weight Weight Weight Weight m
"' (Tyler) Mesh % % % % % % % % % "' .. ..
Head (calculated} m 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 ,,.
"' " +28 Z3.8 21.6 65.5 71.8 40.4 37.6 2.0 l. 7 43.4 :i:
-ZS +35 6.8 6.4 2.5 1.6 8.4 9.9 5.3 4.3 8.1 z .,
-35 +65 13.5 13.3 4.2 3.6 8.8 12.0 17.Z 16.6 9.4 ...
-65 +100 9.4 10.Z 3 .z 3.0 4.7 7.6 13..6 12.9 5.7 ::;
c
-100 +zoo 11.9 13.4 5.0 5.0 7.3 10.3 17.6 17.0 8.3 ... ..
-200 +325 4.2 5.9 3.0 2.1 1.6 4.7 7.0 6.3 3.1
-325 30.4 Z9.Z 16.6 IZ.9 2.8.8 ·17.9 37.3 41.Z zz.o
> I °'
: .>.',
1
,.') : ___ .. _
\,~.--·:
n
l '
~1 ' i
n
·· 1 ..
t:
n
11
q . )
n
'j ' t
u
u <
u
u
: )
~J
· 1
I
·---... ~ !
~J
t I JI l t 111 I~
• I
M ~ " u ~ n
j
~ l
~ I: J ~ 11I:1 l
" 0 DODOO I ~ f I t I I> I• Io o
I I~ I 1 igg:~!i::': t:
~~*I • ~~:4ltl!A ,;,;..J, ·~~~~~
i i
!
( \J
Grindii:;g Test 3
....... ;
~
EXHIBIT 2
Procedure: Sa=.ples were wet screened on a. 325M screen, products dried, and the +325M m.a.terial dry
screened using a. Ro-~ap for 30 min.
Screen Size .Analysis
Sweco Screen DSM Screen DSM Screen Circttla.ting
Test Product :tvfill Dischar~e Oversize Oversize Undersize Load
Sa=.ple Tim.e 1430 1445 1430 1445 1430 1445 1430 1445
Sa:i:nple Weight, g: 1, 174. 9 l,310.3 1,365.7 l,223. l 1, 183.4 1,245.5 850.l 962.4
Screen Product Weight Weight Weight Weight Weight Weight Weight Weight Weight
(Tyler) Mesh % % % % % % % % %
Head (calculated) 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0
+ZS 27.8 25.l 65.0 67.5 47.4 33.3 2.4 1.9 43.7
-28 +35 6.5 7.1 1.8 2.0 9.1 7.9 5.7 5.0 7.6
-35 +65 12.8 14.6 3.7 4.0 12.4 13.Z 18.1 21.0 11.7
-65 +100 9.Z 9.0 3.1 3.4 6.5 8.5 14.8 16.o 7.0
-100 +zoo 11.4 13.5 5.4 5.5 8.9 9.9 15.6 13.5 8.9
-zoo +325 4.8 3.4 3.4 3.3 1.6 3.3 5.9 4.5 2.5
-325 27.5 27.3 17.6 14.3 14.l 23.9 37.5 38.l 18.6
.. :······------~····-··--......... ____ """:'"'\'' ""; · ..... ' .... ·-.. , ... ···.-·-· ................. ·-·-·-···
':""" .. 1 ___,
" 0 r
0
"' l>
" 0
"' " :i:
0 c ...
0 .,,
;:
:z m
"' "' "' "' m
l>
:II
" ·"' z
"' .... :::; c: .... m
> l ()0
-1
., ''\ .. \
' J
n
'.l
:i i l
ll
[J
f] L.
[l
" . r.-i \) I
[J
]
u
u
u
u
u
'
·''·l. . I
I
""" -~-
u
~OLOIA(lo tOKllOL O' !illllU JIUtAROll lfllttUll'l
j
~Ii~
I f lil ·~
~ ~~ ~ ;; 11:~ ti •• .. uu 11'1 ,., '° ~;t.; u~
~ ~ ~
u ~ ' Ii
l
j
1
I l I I I~ I I Ill I
f l!'a~!a It$~ 1$$!3
~:!. 1110010010001 w
I I '~S '~~ ;iii ~
l~fi~~ '~'!!~~~, ~ Nf'>INN NN NrJN N
,:i;;:;::~il: 1!!:&: 1lt<iit
I JNJrl 'J,J 1 A..iJ
i: L· I
~;.
'··
f°""' ~,.. -........ ~··~ j~ ·;· .... ,.
--'
, __ ' .
EXEIBIT 2
Grinding Test 4 --continued
Procedure: Samples were wet screened on a 325M screen, products dried, and· the +325M material dry
screened using a Ro-Tap for 30 min.
Screen Size Analysis
Sweco Screen DSM Screen DSM Screen Circtil.ating
Test Product :Mill Discharge Oversize Oversize Undersize Load
Sample Ti=e 1140 1415 1400 1415 1400 1415 1400 1415
Sample Weight, g: 1, 139.4 886.7 715.4 726.2 1,152.9 1,020.0 763.8 769.4
Screen Product Weight Weight Weight Weight Weight Weigb± Weight Weigb± Weight
(Tyler) Mesh % % % % % % % % %
Head (calculated) 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0
+28 15.3 13. l 86.5 91.8 39.l 43.l 2.7 2.7 55.5
-28 +35 5.8 5.2 0.3 0.3 8,9 7.6 4.9 4.6 5.9
-35 +65 17.8 17.9 0.9 0.5 14.9 12. 7 18.6 18.6 9.9
-65 +100 11. l ll.8 0.7 0.3 6.8 6.3 12.5 13.3 4.7
-100·+200 15.8 16.7 1.6 0.7 8.8 8.9 18.6 19.l 6.6
-200 +325 7.7 6.4 0.9 0.4 3.3 4.1 8.1 6.3 2.8
-325 26.5 28.9 9.1 6.0 18.2 17.3 34.6 35.4 14.6
...... : ;," . ••*•-·-.. ,~~·--·""' ,, .•.. __,."!_ ................. . . :;·.;.··.:-:~ ' ' ., •. '~'.*' • •
c> 0 ... 0
::0 > 0
0 .,
c>
::i:
0
0 ...
0 .,,
3: z m .,
"' m .,
m > "' <>
::i:
z ., .... :::;
c .... m
> I ...
0
...
.\ .. __,L
R'Cl.Uldug
Clock 'l'h:a.c
~~
0840
0910
0930
1000
1030
1035
1040
1100
113()
1155
IZOO
IZ3o
1300
1330
1345
1400
1~30 , ....
1500
1510
1513
lSZZ
l5Z9
1536
1537
Ave:rage
.....
0
30
so
ao
110
115
llS
l>5 , ..
190
l~S
zzs
Z5S
zss
300
3lS ,.,
360
375
>SO
388
397
404
411
<lZ
Diroc M~tur
Itevolu:tiorw Readiti£:
~~e/ro~ ~
6.7
6.3
6.z
'·'
6.5
6.6
6.7
6,7
6.6
6.3
6.5
6.1
6.1
6.0
5.7 l3, 1S4
90 ..
9Z
9I
,.
"
97
100
103
10<
104
lM
105
lob
107
,_,,
Fee~ Rate, :rtph:: o=
{ .... ~"": ·--
......
·--·
ElC!!lBlTZ
J'uuo 19, 1978 z.o
Crari'.b.cci
-·
:Sall Cl:la.:-ge:
-1-1/Z in~ lt:ll.D.d, lJ;,:
Tof:al 301 .. 8 lb. Z1o mill v¢l.a:cce
116.S
-2 ii:I .. +1-l/Z in. :Salls, lb:
3 m. :a all.a. lb:
DSM S=c.o.a, in. ~th:
.DSM Sere.en OpOlliJ:l;:u, :m:n:::
Me:.u:~MDJ.PQwex-T~ (ex:a.ptyeill), kw:
Cor.r:oetcd MOl Po-l' Tare (enpfymill). kw;
151 .. 3
36.0
12
l .. 27
Z.06
o.6
O:i:oe li'eed bte MUl $Wei;:.Q Sc:::e\'ll:I. DSM ~ DSM Scnoa.
(as received)(l} Diseha...=ge QV8%dze Overllow Undc2"fl.ow
-3 W. Solido $oHiU1 Solie.a Solidi: Solids Solidu Sol.ids Sol:WG'
Mill
'Mill W~:i:-1.oad
Meter ltate Vol.a:me
-~'~·~-~-J_ 1!!ll!;.. _L 1!!e _L_ 1!!ll!;.. J_ 1!!L$:. -"-~ __1t_ ~---~R~-=Ol'~!a~----
3.623
3,960
3,$03
4,320
3,533
4,016
4,005
3,Ms
4,005
4,!40
3,713
<,OZB
67 s. 744 -48
66 6, 663 45
S6 ~.578 15
66 4.99P 38
66 5.-049 42.
63 :i.,ss6 37
6Z 3,894 Z7
66 4,693 29
68 9, 0$$ 34
63 4,139 3Z
64o 4, 7Sl '34
63 '1,820 33
62 ..\,O!S 31l
63 4.139 36
64: 5, 173 35
35'
324
68
lSZ
239
zoo
101
111
113
IS<
l<.3
193
182
lSl
67 3,$58
70 z.o~
1a 347
15 346 n ,.,_,
15 -:.cs
73 394
1Q SSl
68 3~61Z
71 250
"ti z:ss
69 'S98
71 =
70 l~3Z3
71 1,087
&o z .. 910
-66 4r .. 077
59 3,"'52.
61 3,870
SS 3,445
61 3,870
64 3., 744
5'9 '3,45Z
57 3.104
59 3,SOS
56 2,696
S6 Z,696
''';.' ..... ~
15 2 .. 3.SZ
71 :i:,255
68 2., l59
66 2,.096
68 2,159
69 Z, 191
69 2.191
6' 2,032
OS 2.159
.Ot 1,937
6S 2,159
-69 z.191
69 Z,191
69 Z., 191
69 2, 191
68 Z,165
7
13
LS
l5
Saui.:plc.
"""""'· Shnt down ..
CoUeclio.g xc.m dioc:ba:ge 1;1~pl4.
SecOXltl b=eL.
Tbi%d b:ar:r.eL
Bopper went empty ..
"""'"""""""-
. ' --·
• 0 r • • > 0 0
"]
' I
-... ____ ....
n
1
:J
:·1 ...
'"j j . ! ,.
'"'-)·
\
[J
LI
u
l J ,,
N
I
. -··-~---~-------------------------... ---. ----··· ----·------~---·~.------------. -. -------·-. , . ---··· ... ·---~~~-·~~---· --~----------. --·-·-·---~---~·--···· ···-··--·--·--·-·-------~·-·--.,. .... .,.,.,_., ___ .~,···r·
1 "
~1~
l!~I
!al
OOLQllADO tOHl)OL or MllfU JIEHARIHI llUYITUYI
~w ~
I I I I I I Q '3 I Q Q Q ~ 0 0 0 0 0 I } I I I 11 '!
I I I ti~ I ~::i~i~~~~~I I I I I ~
~~ 1'1 ~
g ~~ t1 ~ Mi ~! ~~ 11 ~
t"I ~
~~ t1 ~
~";";'~"':~'"! SNt!~;:;cr.:;:
or-. ... ,.~o..p ciMJ!icii~~
'
't'" .M •• ~ '·--\ ............. ....
"""'"'" "'" Cl~• "°""" Revcilul:touu
~ -----see/"J;GV
0820
0925 • """ 5 ••• 1000 '5 '·' l03G 65 ,_,
2100 .. 5»
1I3S ,,. 5.?
"'" l55 '·" mo 185 5»
lZ4S "°" 5.l ,, .. m 5.0
1330 ,., s.o
"'' .,,
.Av=gc
.,___.
:O::itll!!i
Faed..Rato. ~
"""' Ball.Ch=C<=l
-l-l/2il:r-+l:;lo... ~.lb:
-2 in .. -tl·l~ in.. ll.allct, lb:
3 m. n:.illD. lb:.
DSM Scucm., m. 'Width:
DSM Sc%cec. 0;;1cn1ing#", ~
""""""'
Jc.me zo. 1978
M
~--i:i:C-~ TC!bl: 301.a lb, 2r. i:i:dD. V<>1-
11'1..5
ISl..3 ....
lZ
Ml<as!J::l'Cd :Mlll ~ T3l'e fempty=!ll), J<:w::
1 .. 27
2.<16
o.6 C0ttoetiod ~ Pow'"-X' Tue {en:r;pty=ln}, kw;
Mm-. .-,
Oil -t j,n. ::i 1:1.. .. 10 ill ..
'l:~. ....J. .... I/2 in. +l-1/Z in. .flli !l1.. -6 i11.. _•_F_ -12lh!:...._ ~ ~ ..!2l.E..,
82 "' .,. 2l9 so "' 474 2l9
82 3,713 768 47< %19 ., 3,8Z5 "' 474 .,, .. 3,510 768 m .,,
87 3,758 768 ... '" .. 3,420 768 .,. 2l9
88 3,420 76S 47< "' .. 3,600 "' .,. 2l9
')Z 768 <7• 219 -----
'3,607 763 .,. 219
Mill Dttic'.h:u:ge
Solids Solids
__jL_ lb[m
.. ll,Ul"6 .. 9,742
67 I0,4.9Z. .. 7.')60 .. 20.ssa
" io,o:r1
67 9.9SO
67 ll.1S9
67 8,')24. ----
67 10,.022:
•• "" 71 ,. 535 .. •• '" ..
59 597 ..
'7 . ., ..
55 ... .,
52 7M ..
82 7'1 " .. '"" .. ----.. ••• "
4,090 61 5,137 4,896 61 3,.486
4,.6Sl 61 4,255 3,733 " .....
4,651 •• 3,.699
3•914 ,, .. , .. ··= •• <.275
6, ... 81 82 s..6Z.1
4,.CG'I "' 3,780 -----
-4,52.'1 6l 4,l35
30 .. ..
85 .. ., •• •• ., .. -..
... .. ,
~
z,S<O
Z,699
z.668
Z,699
Z,668
2,69? z,826
Z,826
z..699 z.m --
Z.,.712
.····· .
ZS --· 27 ~@-.
{l} Moi$t'!l...-.ei: ·l-l/1. in.• Z. .. 3%1 "'4 µ,_ +l•l/Z. in,• l.0%; ..Q in. +4 iu., 0,8';0; -10 :li:i, .f6 iu.., 0. 7~ .Av.:iz:.a,;<= <l7f'J oz:e feed. .rfltv,: -1-1/2. !~. :5.,$24 lb/hr; "'4 m. +l-Ift it!.., '760.3 l'b/.bz:; -6 In. i4 hi.., 47a.Z
lb/hz:; -10 in. +6 ia., 217.S Ib/br. To=1.i 4,m 1h/b:'~ Z,486 dz:y 11tp:h.. MiUvol'l:lmo c.nd ot taet: ~-
FOG4 ltata, .a:tph (d:y}: z..~86
~Q.ugc: 301.s lb, 2s of >:!:Ult volm:t..e:
Cca;;ree:bad. Mlll Powe7 :l::az:e C=:pty =ill), kW: ••• ,...._.._ ~oaa CCttcctllld. ,_.,,
ll.~r; ' D!ac Croce Pcl'Wa:I:' ·-· Coa!!:!'!:.:!ECfon
~· = B;c.vo~ -"""""<> (~ i'c.J:IC't-outpat c"urvo) G..~• N .. -· --"""--... ec.1't! ..... ""'"" ..... Wbr/81: ~
0820 --.... .... ' ••• 7.6Z s .. so Z.33 z..09
100.;) 3S 5.9 8..7S 6.87 Z. .. 76-2.52
1030 .. ,_, t;.78 1."f8 >.13 2.92
1100 •• '-' 9 .. '91 7.9Z 3 .. 1s .... ms 1>0 ... 9.97 7,9Z ,.,. 2.94
lZOO "' '·' 9.'17 1.9Z. 3.18 ....
lZ30 185 5.1 ICt.16 .... J,ZS 3.tlI
IMS(J) , .. S.l I0,16 3,0') 3.ZS 3.0l 1300(3) 2lS s.o J.G .. 36 8.2:6 3 .. 3z 3.0S(Z.}
1330' 245 ••• to .. x; 3.Z6 ,.,. ~)
1337 2S>
Aw-....
{ll ~ed, &i:xxi. o! Svraco ~ :zi:ia DSM~ u aporcecit:gc. o£ dry =ill fee:cL.
(2) A~o:i J.w: poWCI:' {two ~i!inipr): 3.0& lavb:-/~
(3) Sucnplo =·
: ......
c...,.,.,..,.
L0>4
We1;ht~
ofFoaaU)
lOS.O .....
87,'(I
'98.<0 ....
lOl.<O 144.o --
103.,
. .. ·.'.·.·
Mill ""°""""' Salida .. &-.. .,,......,,.
Sb.:i:t t...1114 •
" .,
67
" •• " 67 61
67
Em? e.ftut..
"..:.._]
. 0 t ;
0 0
•.. , ., . .'i-1 :___, ·· . ._;}----··.ol. '--' --·
EXHIBIT 2
Grinding Test 6 --continued
Procedure: Sam.ples were wet screened on a 325M sc:reeo., products dried, and the +325M :material dry
screened using a Ro-Tap for 30 min.
Screen Size Analysis
Sweco Screen DSM Screen DSM Screen Circulating
Total Product Mill llischarge Oversize Oversize Under size Load
Sample Time . 1245 1300 1245 1300 1245 1300 1245 1300
Sample Weight, g: 1, 258.8 1,237.7 &73.8 642.6 1,361.9 1,079.3 832. l 918.1
Screen Product Weight Weight Weight Weight Weight Weight Weight Weight Weight
(Tyler) Mesh % % % % % % % % %
Bead (calculated) 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100,0
+28 21.0 18.4 64.8 70.7 32.9 23.l l.3 1.0 32.9
-28 +35 6;4 6.5 1.9 1.2 9.4 8.5 3.9 3.7 8.1
-35 +65 13.9 15. l 3.8 2.7 12.8 14.3 16.5 16. 7 12.Z
-65 +100 10.5 11.4 3.2 2.Z 8.8 8.6 12.4 14.5 8.0
-100 +zoo 13.3 14.Z 5.4 5.0 ll.8 14.2 20.3 18.5 12.0
-ZOO +325 5.5 5.6 3.1 2.2 4.8 3.7 5.3 6.7 4.1
-325 29.4 28.8 17.8 16.o 19.5 27.6 40.3 38,9 22.7
' ;,, ... .;-:; . .-: ........ ·
. _ __;
" 0 r
0
"' )>
0
0
"' " "' 0
0 ,...
0 .,,
;:;
z m
"' "' m
"' m
" "' <> . "' z .. .... ::;
c: ... m
> I ..... .,.
.. -, ......
. \
. · .... .i
... )
/
Sediment Description Page 1 oflO
Sediment Description and Classification Background
U.S. St1111dard Sieves
Note that the same size mesh can be a differing sieve number depending on the Sieve manufacturer
(Tyler vs. ASTM)
%~!:!) ~I ASTM·Ell l~I DIN-41881
I µm II Mesh II No. II Mesh II mm I
I 5 2500 11 11 2500 11 0.005
I 10 1250 11 11 1250 11 0.010
I 15 800 11 11 800 11 0.015
I 20 625 11 I 625 11 0.020
I 22 I 11 0.022
I 25 11 500 I 500 11 0.025
I 28 11 11 11 0.028
I 32 11 11 11 II 0.032
36 11 11 II II 0.036
38 11 400 11 400 II 400 II
4o 11 II 11 II o.o4o
45 11 325 11 32s 11 350 II 0.045 I
50 11 11 11 o.o5o I
53 210 11 210 11 300 II I
56 11 0.056
63 250 230 240 11 0.063
I 11 I II 0.011
I 15 11 200 200 200 11
80 11 11 11 0.080 I
9o 11 110 11 110 11 110 o.o9o
100 II II 11 0.100
106 II 150 11 140 11 150
112 11 11 11 o.i12
125 11 n5 II 120 11 120 11 o.i25
I 140 II 11 11 II o.i40
I t5o II 100 11 100 11 100 11
II II II
http://www.geology.sdsu.edu/classes/geol552/seddescription.htm
. IJ
/Jr1'tflf'f,<tr;to)7 B, /JO
5/12/2007
. ·-·· .. ·~------·--·---··-. -· --~ -, ' . '····---·····~· -.. . .. ~--·--.. --· -· ...... " -... ----. . -· .......... .._._,,_..,_ ...... ~---.·.·. -'---····· ,_ ··-"• ···--'-·-·· .-.-... ,_ .. ,,.
Sediment Description Page 2ofl0
I 160 II II II 0.160 I
I 180 II 80 80 II 85 II 0.180 I
I 200 II II 0.200 I
I 212 65 70 II 72 II I
I 250 60 II 60 60 0.250
280 II 0.280
300 48 II 50 52
315 II I I 0.315
355 42 45 II 44 II 0.355
400 II II 0.400
I 425 35 40 II 36 II
I 450 II II II 0.450
I 500 II 32 35 II 30 II 0.500 I
I 560 I II II 0.560 I I 600 28 II 30 II 25 II I
630 II II 0.630 I
710 24 II 25 22 II 0.710 I
800 II II 0.800 I
850 20 II 20 ~I . I
I 900 II I 0,900 I
1000 16 II 18 II 16 1.0 I
1120 II II 1.12 I
I 1180 II 14 II 16 II 14 I
1250 II II II 1.25 I
I 1400 12 II 14 II 12 1.4 I
I 1600 II II 1.6 I
1700 10 II 12 10 I I
1800 I II II 1.8
2000 II 9 II 10 8 II 2.0
2240 II II II 2.24
2360 II 8 II 8 7 II
2500 II 11 II II 2.5 I
2800 II 7 II 7 6 II 2.8
3150 II II 3.15
3350 II 6 6 5 II
3550 II II II 3.55
4000 II 5 5 II 4 II 4.0
I 4500 II II 11 II 4.5 I
http://www.geology.sdsu.edu/Classes/geol552/seddescription.htm 5/12/2007
.J
· ·· · ·· -•---------· ·-····-----·--·~-'" -~-~•·•~-·., .,, •-••·-·--•·-·~-~., .. , ... _. -·· •"• • •• •" • -• ~-.. , -----~--·'·-~~~~'""•..<r. •• •.•,·.o-.c...-.•.<;.:~•.· • ......--'>'".c..·.~c.,•.v.·.·~·-":'.·,;-,·
Sediment Description
l:=I =41=so=il1=I =4='"1~1 ==4==:111= =3.s=ill1= ===:II
.1 sooo II 11 11 II 5.o I_
Sediment Classification based on Grain Size:
Unified Soil Classification System (USCS)
!sediment Name l!Diameter {mm} Sieve No.
\Cobble II greater than 75 mm
\Gravel II 4.75to75mm 4
\sand II 0.075 to 4.75 mm 200
IFines {silt and clay) II less than 0.075 mm
USCS Division of Sands
Sediment Diameter Range Passes through Sieve Retained on Sieve
Name (mm) No. No.
Coarse Sand I 2.0-4.8 II 4 II 10
\Medium Sand II 0.43-2.0 II 10 II 40
jFine Sand II 0.075 -0.43 II 40 II 200
http://www.geology.sdsn.edu/classes/geol552/seddescription.htm
' Page 3of10
I
I
I
I
I
I
5/12/2007
~-~-,_~,..~---~-----···-····--.,_,_ ...... ___ ~·~-,.__...._.. .. ._..._._,._,. ... , . ...,_,_,_ ..... ·.,,.·---·~__,_., .... _,.•v----------4~_,,._,~,,,,.,_,,, •• ,.·~"·-·-· .. -.·.--·.· • ....-••. ·~ .. .,, •••. ,_ .. -_ • .,_,_~,_,_._ .... _"_'•--o-··-·~., .. _..._ . .,__,.~._.,_,_._-_,._,_~,,_.~,_,.,.,,,_ .... r.e • .-.,=.~_.,..,._~~.:.·.·.'-·-"'-'-"'"-'---""-•"-'·''~'·~~··"-'l·"-""-"V
Sediment Description Page 4 of I 0
.--.....
( ) 2·1nches .... /
1 1nch
~Inch (; ~
~Inch
Number 4
' ,.
j;
Number 10 r:
Number200
Figure 4.3, Dry sieve analysis.
USCS Classification System
)
http://www.geology.sdsu.edu/classes/geol552/seddescription.htm 5/12/2007
Sediment Description Page 5of10
UNIF'JEO SOll CLAS51F'ICA1ION SYSIEM
·· ...... MAJOR DIVISIONS GROUP DESCRIP110NS SYMBOLS
"'t: \'le 11 (ir'o<lff<l <lr'ove Ir., ~o c I eon Grove I s GW Grover • Sono Mixtures, §~(j) Lltile or no rlnes
l1: C> (Llitle Ill' Poorl( Groaea Grovers, Ill "' ""~ .. ®' no Flnesi GP ·-.... -01-Grove -Smd MI xturf.ls1 Vl w ~"SjVl Lltile or no rlnes > C) <! "'.., 0 "'-Ge • 5 l I ty Grove I e, V>N !I> Grovfl Is With GM ::!c J: 0 0 Grovel-Sona-SI It Mixturns ,_~z Fines 00 !Pg vio \Appraolool e GC Cl (lyey Gr<Jve I 1>, [;i ~ ~"" F) MS) Gnivel ·Sond·C loy Ml><tur\'ls z~ ~o
L f
Cl i;; I> Weir GroClo'lO Sonas, .. SW Gt'<'.lVe I I y Sands, .., "' l:;" craon sor.<1s uJ 3$:s: Li111a or no Fines
lQ'.:: (LitTll'I ¢r SP J>oi;>r I y Gra<;iar:t $QTJd$1 8:'.? Vl <i-"' '3l no Fines! Gravfl I I y Soncis, -a·-0 on.V> Llttla or no rl1111s 6 z :r ... a" .c Vl SM s 11-ty SoMs, ,_ {; •• > S<Jm:I~ 'llt1h
(j) .ct-~ rlr~s San() -S 11 T Ml ><Tures ,.. 0 '-0 £! ~} !.. IAppr'p,c: i ob I f.l c 1 qyaT sonas, \..I.<. SC {} rlnesJ Sand -c oy ·Mtx1ures ::;;
"' ML lnorgo"io sr rts ~ Very Fine
>-.,.o $<1nd~, $Tiry or Cloyf.ly >In~ ~ <( Sonas, Clayey Sl Its .... .. "' '-' !}_ c: ·-"' g _, _g lt'lorgol'llo Cloys o'f Lo1, to
"'o 0 "I-CL Medruni Plostiolty, ....I~ vl .. "' L~or-. Cloy$ ~ ::1"' ~~ .... :! Q) _, or~n!o Siiis & Organic ~
_, _.
o"' !ll OL SI ty Cl o.ys Oi' Low ..,,.,, p I OGt l Ci i y =~
) .. : __ ~
....... )r1org<1rolc SI J·rs, "'-'-" 0 V1 0 MH Fine Sand or Siity Solis, w"' ~ I() +-EloGt lq S 1115 "'c cl ·-c: -o ~o
LL .C ,_ .c .... 8 -'I-CH lnorgonlo Cloys oi'
<!) u~ Hil;)h Pla!!.t loliy, Foi Cloys
I. ·-(l)
~ "' tit ,_.
._J ~-Q.) Orgonlo cror oi' MeolU/Tl -.... I. OH Vl "" 10 H lgh P os·t lofty,.
Orgar;lo SI lis
Hl()hly Orgonio Soils Pl PA at and Oi har
Hlghly Orgonlc: 50115
Visual Jogging of sediments entails estimating percentages of gravels, sands and fines (silt and clays).
Practice and the use of the Geotechnical Gage will increase your confidence and ability in visually
· ·) logging sediments.
Read: Yisual Exam Test
http://www.geology.sdsu.edu/classes/geol552/seddescription.htm 511212007
-•• ----. ·-------------------. -------• --···-··· ...... ----·-·· - -• - --------···----~~--·---·· ·--------·-~-., - ' -', .• •'-"·'-"-'-··~-...----·-·---~~---~-;,. __ ~ __ .___,_~'-"~-'--' ·>"-''• ··-·~-·-·-·"""··?
Sediment Description Page 6 oflO
Read: Field Identification Guidelines
..... ,
· · .) Ultimately, sediment samples may undergo grain size analysis through sieves. Graphing the cumulative
weight percent retained/passing by sieve no. or grain size will result in the sediment grain-size
distribution curve. The grain-size distribution curve is used to quantitatively classify the sediment type
(your visual identification is a qualitative classification).
)
.. /
Read: Grain Size Distribution Measurement
U.S. Standard Sieve
openings Jn Inches
S! "! 10 «t (\I (')"It 0 ~ ~~ •
0
0
30
20
10
~00 50
.......
10 5
Gravel
Grain Size Distribution Curve
U.S. Standard Sieve numbors
co (:Q,... .......... \'l I'-~ ~ "' o "<r to o g ~ ~go8 ~ ~ R .
'
~
.
..,
'
-;_) ell sorted
'J
'
1 0.5 Grain size (rnm)
s d
yoor sorted .., ./ .....
"'
1.0 0.05
Coarse fine Coarse: Medium Fino
Hydrometer
0.01 0.005
SJltorCl•Y
0
10 ::,
40 .il' m 50 i'! u
60 J
0 ll. 7
a
9
0
0
The grain-size distribution curve is used with the USCS classification chart to classify the sediment
type. Other measures used to describe the sediment are the sorting or gradation of the sediment. As can
be seen in the above chart, a well-sorted sediment has a small range of sediment grain sizes while a
poorly sorted sediment has a large range of sediment grain sizes. In the USCS classification scheme, the
gradation of the sediment is used instead of the sorting. A well-graded sediment has a large range of
grain sizes while a pool'ly or uniformly graded sediment has a small range of grain sizes.
Figure 4-6. Well-graded soil.
POORLY SORTED SEDIMENT= WELL GRADED SEDIMENT
http://www.geology.sdsu.edu/classes/geol552/seddescription.htm 5/12/2007
. ')
··.'··"
····~
···· .. _.,J
'.)
Sediment Description Page7 of!O
Figure 4.7, Uniformly graded soil.
WELL-SORTED SEDIMENT= POORLY OR UNIFORMLY GRADED SEDIMENT
~··
Figure 4-8. Gap-graded soil.
After sieve analysis, the data are tabulated showing the weight of sediment retained on each sieve. The
cumulative weight retained is calculated starting from the largest sieve size and adding subsequent
sediment weights from the smaller size sieves (see table below). The percent retained is calculated from
the weight retained and the total weight of the sample. [Don't get confused by the graph -it is individual
percent retained in Column 16 and cumulative percent passing in Column 17]. The cumulative percent
passing in Column 17 of the table below is calculated by sequentially subtracting percent retained from
100 %. In table below, cumulative percent passing 1/4 inch sieve "" 100 -16 = 84; cumulative percent
passing #4 sieve= 84-5.2 = 78.8; etc.
http://www.geology.sdsu.edu/classes/ geol552/seddescription.htm 5/12/2007
·1
·· ...... /
·. )
Sediment Description Page 8of10
SIEVE ANALYSIS DATA l,OAU ~fAAf(O
22 mi 91
l tl!Olt:Cl ,~. (X--:::.r.TIQff .... t>ATJ cowttno
B"l'O AlRFIELll 28 FEB 91
S. SMiPLE DfS®mO.~ f.. ).AA'J'\t: k\IMJt'!
lA
tIGHr 5= SNIDY SOIL 1, PUWA$ttft> ltf.'t'
"' ' 'HO
l 0~~ J....w~( Wf$T 9. + IJ(w3.$>\.'Mlf WUGHJ 10-•liN 1'\MH.£ WUISHJ
26$9 2359 100 "· ll. 11'wrn;m 71 .. IS(vl.l~TNf " " '~~"I W(l\i>l1'Q1 11'rltfA10 llfiit~b ~~~WJ SIJV( Jl~ ~f/Alh'f."o
1% 202
1 231
% 210 210 0 0 0 100.0
" 230 624 394 394 16.0 84.0
#4 205 J32 127 m 5.2 78,8
#8 m 691 466 987 19.0 59.8
#20 215 612 391 1384 16.2 4.3,6
i60 235 581 346 1730 14.1 29,5
#100 250 612 362 2092 14.l 14.8
~200 260 SIS 2S5 2347 l0,4 4.4
11, fOIAt w~!G I 'l€T.U.'HDlli :Sli.\lh u-.. r~1<1 ., f;O.Q~(l•JIJ
2347
2Qi. wnc.i;r SllVIO rtt~OUliH .ilZN ~ .. -J • 270-26() 10 2459-i4S7 • 2
ll. WASHl»<i 1(1~$ Jl•ll ubJ 2459-(235()1-100) 0
H. TOTi~loollJ l'A$Sl-\'<i llOO in. 'fl uo
H, IOfAt WitGl11 Ol IAA(llQli> 111 •Jn 2457
24. REMA.RltS J5 EUO~u+-'1<•~
usc5 Sf: <AAOflp•1 >t IN ,.
N!\Ctl'H•G-* OitlGl'Ul!. ""1111
P(ll(tN1•$ __!L ~· 100• .08 P£ACE1H•f~
a 1r(1<i.-.c14t1 H. (O'UUIU> av "'t'•"'•I ;e C"icoc10 •v 11-ywi......,
~~PVZ. cfk-U#rvz. ~,I % '';;-?• ~
OD form 1206, DEC 86
Figure 44. Data sheet, example of dry sieve analysis.
The cumulative percent passing is plotted on the grain-size distribution graph. The percentage passing
the No. 4 and 200 sieves is used to classify the sediments as gravels (G), sands (S) or fines (must use
plasiticity index to differentiate between silts and clays).
http://www.geology.sdsu.edu/classes/geol552/seddescription.htm 5/12/2007
,,
'· ·.;
... )
Sediment Description
OlO'l'J~ .19mM
¢! 0 " .. :: • : II = ": :: !! it ~
m
0
: i;i g)
l'1 ,; d " ~
;; I a • •
~ i i a d'
"' g ~ ~ l ~ ~
~ ~ d
~ • ' ' "' § 8 ... :; ~ @
_o
l:t -~ i ~ r -·· ~ a@
~ ~"~ ..
~ -J. 3 :: g© .. §;; u "' w I/ ::; f ~ ~
= ~ " .. t; i! s -" ;; ' !l -a j-
"' -~ \!! = -~ t-
~ I • .. !; G>2 § ~ ,, -~~ § • / -"' t: ~-,.:
D • .11
l'l v •
;;; --0
~ -i :c I®~ !!! :: " ;:;
~ 110 -~
! .. © -!: ~ " I
;; ~
-~ ;; 0 0 ~ : "' " a :: ~ . 5 ~ ~ • ~ ~"' Otl$.$14 n»l).f
Figure 4-S. Graln-size dt.tributlon curve from sieve analysis.
1 !
::! ! d~ • • oS a~ ~
~ ...
~
~ •
~ 'I.
~ .. i~ ~
I
I ~
I a Q.
Page 9of10
The grain-size distribution graph is used to read off the grain size at which 10% of the sample passed
(D10), 30% of the sample passed (Dlo) and 60% of the sample passed (D6o). These numbers are used to
calculate several coefficients:
Hazen's effective size, D10, which will be used to estimate permeability
Uniformity Coefficient, Cu= Dw/D10
In the above graph,
http://www.geology.sdsu.edu/classes/geol552/seddescription.htm 511212007
(
···-,"
)
·:,/
) __ ...,
Sediment Description
·-·-. ---·. ,_._,_,._, .. , _,._._,_ ·'· ··-······· ·.; .· .. ·-· ... ·•· .. ·.·-·.·• ,_., ~~-------.~--.' ~-"2.·'·-· , ... -. ·--~--. '.-';.-;,.\--;·~' .::._ "-~'-"---:..'.-'-' ,·_-:;<;< ,-.:~--..
D6o ~ 2.4 mm and D10 = 0.13 mm
then Cu = 2.o/o.1s ,, 18.5
The unifonnity coefficient is used to judge gradation.
Coefficient of Curvature, Co
Cc _ (Dao):_
-(D6ox D10)
In the above graph,
Dao"' 0.3mm
(0.3)2
1.md Cc = (Z.4)(0.l3 ) w .29
Page 10 oflO •
In the graph below, well-graded soils (GW and SW) are long curves spanning a wide range of sizes with
a constant or gently varying slope. Unifonnly graded soils (SP) are steeply sloping curves spanning a
narrow range of sizes. For a gap-graded soil (GP), the curve flattens out in the area of the grain-size
deficiency or gap.
The USCS criteria for well-graded gravels (GW) and sands (SW) are:
I. Less than 5% finer than No. 200 sieve
2. Unifonnity coefficient greater than 4
3. Coefficient of curvature between 1 and 3
If Criterion 1 is met, but not Criteria 2 and 3, the gravels are gap-graded or uniform gravels (GP) or
sands (SP)
If you are interested in more information: Gradation and Bearing Capacity
http://www.geology.sdsu.edu/classes/geol552/seddescription.htm 511212007
--~-------------· ,_ ---'-~---~--------·· -
......,, ' ---~ ·• ----~---• ·~-•' -' ~,,._ '"' • _,._ _____ ,_._,_,._.~~---~-..--·-······ ._._._._,,~,-.-_,.,_,..,. __ ._,,,,~---..-~,-.,__,~,_,_-_...,~·.~,,_,_,_._.;::..:.o,-.=-.:.~'""'-'-""·'-"'-'O·:..o.•.:·.-00-::-,,.,:.:-.:;_·,,-,o.·: ~J .
-~EPA
J"
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United States
Environmental Protection •• Agency
OfficG of Research and
Development .
Washington DC 20460
The Hydrologic
Evaluation of
. . EP A/600/R-94/168b .
· September 1994
Landfill Performanc~e.
(HELP)·Model
·Engineering
Documentation for
Version 3
' ) 0.60
0.50.
pi)l\0$1n'.
..... ~ 0.40
~ 0. :ZI
l 0·"'' O.M
0.30
0 u a: I!! 0.20
~
0.10
0.00
SAND SANDY LOAM SILTY CLAY SILTY CLAY
LOAM LOAM LQAM CLAY
·Figure 2. Relation Among Moisture Retention Parameters and Soil Texture Class
) ,.. are not specified, the program assumes values 11ear the steady-state values (allowing no
··~ ...... ·
long-term change in moisture storage} and runs a year of simulation to initjalize the
moisture contents closer to steady state. The soil water contents at the end of this year
. are substituted as the initial values for the simulation period. The program then runs the
complete simulation, starting again from the beginning of the first year of data. The
results of the volumetric water content initialization period are not reported in the output.
3.3.2 Unsaturated Hydraulic Conductivity
Darcy's constant of proportionality governing flow through porous media is known
quantitatively as hydraulic conductivity or coefficient of permeability and qualitatively
as permeability. Hydraulic conductivity is a function of media properties, such as
particle size, void ratio, composition, fabric, degree of saturation, and the kinematic
viscosity of the fluid moving through the media. Tpe HELP program uses the saturated
and unsaturated hydraulic conductivities of soil and waste layers to compute vertical
drainage, lateral drainage and soil liner percolation. The vapor diffusivity for
geomembranes is specified as a saturated hydraulic conductivity-. to compute leakage
through geomembranes by ;vapor diffusion.
13
L ,.
i: I
JI
]
')
j' TABLE 1. DEFAULT LOW DENSITY SOIL CHARACTERISTICS
Soll Texture Class A lS Saturated · Total Field Wilting Hydraulic Porosity Capacity Point . HELP USDA uses voVvol vol/vol vol/vol Conductivity
cm/sec
1 CoS SP 0.417 0.045 0.018 l.Oxl<)'2
2 s SW 0.437 0.062 0.024 5.8xl0-3
3 .PS SW 0.457 0.083 0.033 3.lx10·~
4 LS s:M' 0.437 0.105 0.047 l.7xl0'3
5 LFS SM 0.457 0.131 . 0.058 1.0x10·3
6 SL SM 0.453 0.190 0.085 7.2xl04
7 FSL SM 0.473 0.222 0.104 5.2xl04
8 L ML 0.463 0.232 0.116 3.7x104
9 SiL ML 0.501 0.284 0.135 1.9x104
10 SCL SC 9.398 0.244 0.1~6 1.2x104
11' CL CL 0.464 0.310 0.187 6.4x1Q·S·
12 Si CL CL 0.471 0.342 0.210 4.2x1Q·S
13 SC SC 0.430 0.321 0.221 3.3x1Q·S
14 SiC CH 0.479 o,371 0.251 2.sx10..s
15 c CH 0.475 0.378 0.251 2.5x1Q·S
21 G GP 0.397 0.032 0.013 3.0xlQ·I
a = constant representing the effects of various
fluid constants and gravity, 21 cm3/sec
"' -total porosity, vol/vol
0, -residual volumetric water content, vol/vol
"'· = bubbling pressure, cm
' " = pore·size distribution index, dimensionless
(). '332-
o. '3 t(;
D.t.~i
C>. :?.5"1
0.~S\
0 . .z.it-
0. l ~4
A more detailed explanation of Equation 11 can be found in Appendix A of the HELP
program Version 3 User's Guide and the cited references.
19
~;
v·
..... --------·-······· .... -----· ~--··---····-·~·--.
36 PERMl!ABIUTV
ered that when well-graded mixtures of sand and gravel contained as little as ·:·_
5'7G of fines (sizes smaller than a No. 200 sieve) high compactlve efforts re. ·
duced the effective porosities nearly to zero and the permeabilities to less than :
0.01 % of those at moderate densities. These tests explain one of the reasons ;
that blends of sand and gravel often used for drains are virtually useless as •:
drainage aggregates if they contaln more than Insignificant amounts of fines. ;
In the preceding paragraphs variations In the permeability of remolded ma· .,.;
terlals caused by variable compaction were discussed. Any factor that densifies ·
soils reduces penneability. Studies of the rate of consolidation of clay and peat ·1
foundations are sometimes made by using initial coefficients of permeabili\y ·:. of compressible formations. While the consolidation process ls going on Jn . ·
foundations their permeabilities are becoming less. Generally, decreases in the \
penneabilitles of clay foundations are rather moderate, but they can be large in '
highly compressible organic silts and clays and ID peats. Modified calculation ·;
methods ut!Uzing the cbanglng permeability are needed in the anal¥sls of:'
highly compressible foundations. Some typical variations in permeability ·
eau~ed by consolidation are given In Fig. 2.10, a plot of consolidation pressure ".
versus permeability.
~ ;}!: 31 If l'.!o pc9.
~ 4aop,,;P.
~ z "1st
100
10
l
0.1
4 0.01
u 0.001 ;; tix 10-•
!i1" 10-• ..
l x 10·•
1x10-1
l x 10·•
Ct~nig1avel 100,000
I I
Coarselsand I 10,000
. 1o1e1.>•~i1 1000
.. 1 I 100
10
;:;-
~
l ~ D n
0.1 • ~ 0.01
Ix JO°"
IX 10"'
I ]. . 1x10·•
I I\ i I
0.1 1.0 ~ 1-'(~.f
Consolldallon pressure, TJsq ft.
FIG, 2,10 l'ermeablllly versus consolidation pressure.
~:
;
(2.l)
2..2 COE!'FICIENT OF PERMEABILITY 25
Darcy's dtscharge velocity multiplied by the entlre' cross-sectional area, in·
eluding voids e and solids I, gives the seepage quantity Q under a given hy-
draulic gradient i "' Ah/Al or h!L. It ls an imaginary velocity that does not
exist anywhere. The average seep ace velocity v, of a mass of water progressing
through the pore spaces of a sol! ls equal to the discharge veloclty (v, =-kl)
multiplied.by (I + e)le or the discharge velocity divided by the effectlve poros-
· itY n,; hence permeability ls related to seepage velocity by the expression
k v,11, ,,._
i (2.3)
For llllY seepage condition Jn the laboratory or Jn t~e field In which the
seepage quantity, the area perpendlcular to the direction of flow, and tho hy-
draulic gradient are known the coefficient of permeabil!ty can be calculated.
Likewise, for any situation where the seepage VJ/oc/ly Is known at a point at
whlch the hydraulic gradient and soil porosity also are known, permeabllity can
be calculated.
Bxperlmentally determined coefficients of penneabillty can be combined
with prescrlbed hydraulic gradients and discharge areas in solving practical
problems involving seepage quantities and velocities. When a coefficient of
permeablllty has been properly determined, It furnishes a very important fac·
tor in the analysis of seepage and in the design of drainase features for engi-
neering works.
The coefficient of permeability as used In this bOok and Jn soil mechanics
ln general should be distinguished from the physicists' coefficient of perme-
ability K, which is a more general term than the engineers' c6efficient qnd has
unil8 of centimeters squared rather·than a velocity; it varies with the porosity
of the soil but is fndependent of the viscosity and density of the fluid. The
transmlssibjlity factor T represents the capability of an aqµlfer to discharge
water and ls the product of permeability k and aquifer thickness I,·
The engineers' coefficient, which is used In praetical problems of seepage
through masses of earth and other porous media, applies only to the flow of
water and is a simplificatlon introduced purely from the standpoint of conv.,;
nience. 1t has units of a velocity and is expressed in centimeters per second,
feet per minute, feet per day, or feet per year; depending on the habits and
personal preferences of Individuals using the coefficient. In standard soil me·
chanlcs tenninology k is expressed Jn centimeters per second:
Although coefficient of permeability is often considered to be a constant
for a given soil or rock, it can vary widely for a given material, depending on
a number of factors. Its absolute values depend, first of all, on the Pr<>pertles
of water, of which viscosity. is the most important. For Individual materials
Atf1lc.hmenr O >~
Ce.der9re,n, 11 5e.epiJ8c.»Drtti11~e,tlliet Ptowt.Jetr~3rrAed. nt1
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Multi-Flow
product Information
8Jm!loat!ons
Eillinml Aru;essor!es
Technical
1nsta!latlon
Drainage Guide
~
Technical Properties
Orolnago Coro
property
TI1Jckness, inches
Flow Rate, gpmift'
ComprossiVe 6trengltt
Geotexllla Fiiler
Yost Method
ASTM0·1777
ASTM0-4716
J?tQperty Test Method
Weight, oz/sq yd2 ASTM 0·3776
Tensile Slrength, lb. ASTM 0·4632
Elongation, % ASTM Q-4632
f!uncture, lb, ASTM D-4833
Mullen Bursi; psi ASTM 0·3786
Trapezoidal Tear, lb. ASTM 0·4633
Coelfeclenl of Perm,cm/sec ASTM 0·4491
Flow Rate, gpmlft?. ASTM !>-4491
PermillMly, 1/seo ASTM 0-4401
1\.0.S Max US Sid Sieve ASTM 0 4761
UV Slabll!ly, 500 hrs .. % ASTM 0.43"55
Seam Slreogth, lb./ft ASTM P.4595
Fungus ASTM G-21
Va!ua
1.0. * 29
BDOO
Vahle
4.0
190
50
50
200
42
0.1
100
1.8
70
70
100
No Growth
• Horil!onlal lnslallallon, gradient= 0.01, compressive forCll ~ 10 psi for 1!
An values given represent n1inin1mn average roll values
GOE! Control Products, Inc. Laguna Hills, CA. 949-305-7117
6l)E,1 Hu In-flow .
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150 Designing with Geotextllos Chap.2
TABUl2.12 RECOMMENDoO Rl:OUCTION FACTOR VALUES FOR USE IN EO. (2.2581
Rangeo!Reductlonllwlots
Crup
Soil Clogging Reduction InltUs!on aiemlcal Jllotogltat
Appll<aUon nod lllindlng' of Vo Ids into Voids Clogging' Clogging
Retainlbg wall ftlttra 2.0to4.0 15to2.0 1.0 to1.2 1.0to 1.2 1.0tol.3
Underdra!Jl fillt!S 5.0tolO 1.0to 1.5 l.Otol.2 1.2to1.5 2.0to4D * Erosion-controlft1te18 2.0lolO LOlol.S 1.0101.2 1.0to1.2 2.0to4.0
LalldJill filteJS S.OtolQ 1.5102.g 1.0to1.Z 1.21015 Sto 11!1
Gravity drainage Mlo4.0 '2.0103.0 1.0101.2 L'no'r.:t 1.2to 1.S
Piessure drainag• 2.0to3.0 2.0to3.0 tOtol.2 1.lto 1.3 1.1 tol.3
*If stone rip rap or eoncieto blocks cover the su.rfSG'B of the geotextllc, uso eltherthe upper values or include:
an addlUonal reduction factor.
'Values can be blgherpartlc:olady fur blgh alkalllllty groundwat..-.
'Values can bo higher for tUibldity and/or formlcroorganl1nn contonts greater than SOOO mg/I.
where
q.u.w = allowable flow rate,
q.h = ultimate flow rate,
RFscP =reduction factor for soil clogging and blinding,
RFc• = reduction factor for creep reduction of void space,
(2.2Sb)
:RFm = reduction factor for adjacent materials intruding into geotextile's void
space,
RF cc= reduction factor for chemical clogging,
RF8c = reduction. factor for biological clogging, and
Ill:& = value of cumulative reduction factors.
AB with Eqs. (2.24) for strength reduction, !hls Jiow-reductlon equation ci>uld also have
included additional site-,specific terms, such as blocking of a portion of the geotextile's
surface by riprap or concrete blocks.
2.5 DESIGNING FOR SEPARATION
Appllcatlon areas for geotextiles used for the separation function. were given in Sec·
tlon 1.3.3. There are m~y specific appllcatioru,.and it could be said, in a general senso. .
that geotextiles always serve a separation function. If they <jo not also serve thl.s fun;· .
tion, any other function, locludiilg the primary one, will not be served properly. 'This
should not give the lmpresslon that the geotextile !unction of separation always plays a .
secondary role. Many situations call for separation only, and in such cases the geoteX· ":.·
tiles serve a slgnlftcant and worthwhile function.
Sec.2
2.5.1
Per ha
ls the: I
COU111 I thatt
sile S1 ' J I soils· I sepat I 31\d f
matic ;·
Of SCI ' giver I 2.5.2 i
Coru I
plaC(
avail
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fom
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402 Deslgnlng with Geonets Chap. 4
4.1.6 Allowable Flow Rate
As described previously, the very essence of the design-by-function concept ls the es.
tablishment of an adequate factor of safety. For geonets, where flow rate is the primary
function, this takes the following fonn.
where
FS=~ q,... (4.3)
FS = factor of safety (to handle unknown loading conditions or uncertainties
in the design method, etc.),
q~k>w = allowable l!ow rate as obtained from laboratory testing, and
q,"'d = required l!ow rate as obtained from design of the actual system.
Alternatively, we could work from transmissivity to obtain the equivalent relationship.
FS=~ o,""' (4.4)
where 9 is the transmissivity. under definitions as above.As discussed previously, how.
ever, it is preferable to design with l!ow rate rather than with transmissivity beoause of
nonlaminar flow conditions in geonets.
Concerning the allowable flow rate or transmissivlty value, which comes from
hydraulic testing of the type described in Section 4.1.~ .. we mlll!t assess the realism of
the test setup in contrast to the actual.field system. If the test setup does not modelsite-
specl!l.c conditions adequately, then adjustments to the laboratory value must be mad~
This is usually the case. Thus the laboratory-generated value is an ultimate value that
m\!St be reduced before use in design; that is, ,
q.uow<q.,,
One way of doing this is to ascribe reduction factors on each of the items not ade-
quately assessed in the laboratory test. For example,
[ 1 J qatJow"" qwt RFm X l.UlcR X RFcc X RFBc
or if all of the reduction factors are considered together.
where
qatlow = q,u[uk] .,:·:
... ·.~: ..
:1 ·:.;r1.i,.~. . ... r
q.1, = ftow rate determined usingAS'IM D4716 or ISOfDlS,WIJ5~fpl;~'.
tenn tests between solid platens using water as the It~""' '
under laboratory test temperatures, · . : J' ,-'.t· "-· °..'-:. ...
f'·
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and lie '
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ample1
tionfa
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.i ·>?eonets Chap,4
... ~-
ict!on concept is the es·
, now rate is the primary
(4.3)
dltlons or uncertainties
testing, and
e actual system.
e equivalent relatlonshlp.
(4A)
Uscussedpreviously,how·
transmlssivlty bees use of
value which comes flom
nust ~ss the reali~ of
.... >/Pdoesnotmodels1te-
.• .zy value must be JJ1l1de.
· e is an ultimate value that
.ach of the iteDlS not ado-
ll'nJ (4.5)
,ii.:
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,: ·~::~\.· ... :·
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Seo. 4.1 Gaona! Properties and Test Methods
qallo,, = allowable flow rate to be used in Eq. (4.3) for final design p11tposes,
RF lN =reduction factor for elastic defonnation, or intrusion, of tho adjacent
geosyntheties into the geonet's core space,
403
RFcR = reduct!on factor for creep deformation of the geonet and/or adjacent
geosyntheticS' into the geonet's core space,
RF cc = reduction factor for chemical clogging and/or precipitation of chemicals
in the geonet's core space,
RF.ea = reduction factor for biological clogging in the geonet's core space, and
IlRF = product of all reduction factors for the sit.,..specific conditions.
Some guidelines for tho various reduction factors to be used In different situations are
given in Tub le 4.2. Please note that some of these values are based on relatively sparse
Information. Other reduction factors, such as installation damage, temperature effects,
and liquid turbidity, could also be Included. If needed, they can be included on a site-
specific basis. On the other hand, if the actual laborato.ty test procedure has Included
the particular item, it would appear In the above formulation as a value of unity. Ex-
amples 4.2 and43 lllustrate the use of geonets and serve to point out that high reduc-
tion factors are warranted in critical situations.
:&ample4.2 I What is the aDowablo geonet lfow rate to be used in tho design of a capillary break beneath
a roadway to prevent frost heave? Assume that laboratory testing was done at the proper
design load and hydraulic graclient and that thls testing yielded a short-tenn between-
rigid-plales value of2.5x10-<m'ta •
Solution: Slnce.beUerinfonnation ls not known, average values from 'Ilible 4.2 are used in
Eq.(4.5).
TABLE 4.2 flECOMMENDED PREUMINAIW REDUCTION FACTOR VALUES FOR E0. (4.5)
. FOR DETE~MINING ALLOWABLE FLOW RATE OR TRANSMISSIVITY OF GEONETS
~licottonArea RF111 RFCR* RF cc RFac
Sport fieldt 1.0101.2 1.0tol.S 1.0to1.2 1.t to 13
Caplllaxy breaks 1.ltol3 l.Oto1.2 1.1to1.S l.l to13
Roof and plaza deck< 1.2to1.4 1.0tot.2 1.0to1.2 1.l tol.3
Ref11lnlng walls, seeping roek,
niidsollslopes · ·
·13101.s 1.2to1.4 1.1 tol.S 1.0to1.S
D.rolnage blankets 13 to l.S 1.2to1.4 l.Oto 1.2 I.Oto 1.2
Sudace wator dtalru. for 1.3to1.5 1.1to1.4 !.Oto 1.2 1.2 to l.S
landfill COV6l'$
Sewndaty leachate. colleclion 1.5to2.0 1.4to2.0 · 1.5 to2.0 l.S!o2.0
. QandfU.ls) ·p;· · l'lbnary leachate colle<tlon 1.Sto2.0 l,4to2.0 1:SJo2.0 1.Sto2.0
(Jaadfill.!)
"1bo<o values areaensitlvc to th• density of ther..U. uaed In tho geonet's rnanu,fficture. 'Ibo higher
the density. the lower tho. reduction factor. Creep of the: covering geotextile(s) is a product.speclfio
ls!uo. : .
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670 Designing with Geoplpes
The above formula can be readily converted to flow rate, Q, by multiplying the veloci
by the cross-sectional area A of the pipe.
For pipelines that are either flowing full or flowing partially full, the Mannln'
equation is generally used. · ·
where
V =velocity offlow (mis),
Rn= hydxaullc radius (m),
S = slope or gradient of pipeline (m/m), and
11 =coefficient of roughness (see 'Ibbie 7.7) (dimensionless). .. ..
Note that plastic pipe of the type discussed in this chapter, with a Smooth interi{>r,'".
Manning coefficient from 0.009 to 0.010. l'Jastlc pipe with a profiled or fOrru~ai~
rior has a Manning coefficient ranging from O.Q18 to O.Q2.S. . ' · ·.;
Eqs. (7.9) and (7.10) are generally used in the form of charts or noll!pgf · ·
determine pipe sizes, flow velocity or discharge flow rates (see Fignres 7.6 Qiilt·
each chart we include an e~ample from Hwang (?],illustrated on the resp · '. ·"-
graphs by heavy lines. Note that both nomographs are for pipes flowing~~~~'
Example 7~1 · ~,~~~-:
A lOOmlongpipe w!tllD = 200 nun and C = 120carrles a dlschargeof3°-'~~
the head loss in the pipo.(Sco tho Hazen· Williams chart in Figure 7.6.) · . .''~
Solntioru Applying the conditions given to tho solution chart in Figme 1,6,' 1
dlent is obtained. . ;·.< · . .;.
s~ O.OOS~mlm
TABLE 7.7 VALUES OF MANNING ROUGHNESS COEFflCIENt N, FORRBP~,
SURFAC!lS .. · :·.;;;.
'fypo ofPipe Surface
Wood or finished concrete
Unfinished concrete, well-laid brlckwork,concreto or cast iron pipe
Riveted or "'ital steel pipe
Smooth, unito:rm earth channel .
Conugated fh11nes, typical canals, river ft cc fiom large ~ones and heavy w~:.;. :)) .... -
Canals and rivets wifu many stones and weeds :/~'
"'Tho table does not distinguish between different types of plastl11, or betw~ ~i
pipes with perforatioM. · · ""'·
Source: After F()x and McDonald [9}. . ·~,
l(oervicr, R. M ., 11DCSJ9\'\i~ witvi E:trosHvitMnc~ 1" Lf1£i €Gl1 ,~-·
;!•
[. r
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CHART 1
SOIL RETENTION CRITERIA
FOR STEADY-STATE FLOW CONDITIONS
0 •Mlmm
FROM son. PROPERTIES TESTS
MORE THAN 20Y. CLAY
I0,0•0.002 mmrl . I
I
use 3 TO 6 lncliu OF Flffe SANO BETWEEN
SOA. AHO GEOTEXTllli. TH!ll Dl!SIGH Tile
G. TEX E AS A Fn. FOR rne SAND
d,
I L-----~-----,
LESS THAN 20'l· 1 IPI '51 CLAY, AND MORE THAN IOY. FINES
IO,o>0.002 mm
AND c\o>M75 mmJ
I
t I I ' / r---------'----../
!· I I
I
l
I I I I I
fd~:.0,075 mm.AHO
d10 c 4.8 mm> I
I
I I
MORI: THAN DOY, I
GR
APPLICATION FAVORS RETENTION
STABLE
OIL
111 c ~31
APPLICATION
PE 'If~ ~SITY
15 lhe parllcle size of which x percent 1s smallot
use
.!li .. c·u dlo
d'100 and d'o are lhe ei\Uem1lles of a straight Jin•
I
I I
/ /
/ /
I
C'u• /"d';;; v """db dtawn through the oanicle·s•ze disU1bul1on, as Clitected aboves zind
d' ~o is Iha mTdootnl of I his fine.
Cc•~
dogXd10
10 15 lho re1ahve denisty of lhe soil
Pl 1s the olas11c11y Hld&1' ol lhe soil
OHR 1s lhe aoub11•hydlomuler ratio ot the $011
Porllons of lh1s flow cnatl mod1hed from Giraud 119881
/
/
/
/
13
Source: Luetticb, S.M., Giroud, 1.P., and Bachus, R.C. (1991).
"Geotextile Filler Design Manual". Report prepared
for Nlcolon Cotporation, Norcross, Georgia.
,/
I
i' ;
. ___ :.··
: .
.... _,·
4.2 Denne the Hydraulic Gradient for the Appl!catjon (ij
The hydraulic gradient will vruy depending on the application of the filter.
Anticipated hydraulic gradients for various applications may be estimated using
Flgure 3.
4.3 Determine the Minimum Allowable ('.eotextile Permeability <"il
After determining the soil hydraulic conductivity and the hydraulic gradient, the
following equation can be used to determine the minimum allowable geotextl!e
permeability [Giroud, 1988]:
The hydraulic conductivity (permeability) of the geotextile can be calculated
from the permittivity test method AS1M D 4491; this value can often be obtained
from the manufacturer's literature as well. The geotextile permeability is defined
as the product of the pennittivity, ttr, and the geotextile thickness, tg:
kg > (jl tg
STEP 5. DETERMINE ANTI·CLOGGING REQUIREMENTS
. To minimize the risk of clogging, the following criteria should be met:
,
• Use the largest opening size (09s) that satisfies the retention criteria.
• For nonwoven geotexllles, use the largest porosity available, but not less
than 30 percent.
• For woven geotextiles, use the largest percent open area available, but not
less than 4 percent.
Source: Luettich, S.M., Gltoud, 1.P.,andBachus.R.C. (1991).
"Geotextilo Filter Design Manual". Report prepared
for Nlcolon Cotporatlon, Norcross, Georgia.
7
(':
Table 4·5
Typical Hydraulic Gradlentst~
DRAINAGE APPLICATION TYPICAL HYDRAULIC
GRADIENT
Standard Dewatering Trench 1.0
Vertical Wall Drain 1.5
Pavement Edge Drain 1 l'l
Landfill LCDRS 1.5
Landfill LCRS 1.5
Landfill SWCRS 1.5
Inland Channel Protection 1 l'l ' l
Shoreline Protection 1Qlbl
Dams 1Qlbl
Liquid impoundments foM
NOTES: <~ Table developed after Giraud [1988].
M Critical applications may require designing with higher gradients than
those given. ·
.) l .. · 1
44 i ..
J.
Unit Weight ASJM IJ.3776 Cil.~~ .. 6.0 8.0 10.0 12.0 16.0
Gteb Teoslle ASTMll-4Bn lb3. 150 200 285 275 360
Grab Elonsolion ASTMIJ.4632 \; 50 60 50 50 liO 60
Mu11'11 Burst ASTM 0-3767 p~ 225 3511 460 660 650 760
Pua<l!lra ASIM ll-m:I lbs. 65 llD ISO 165 185 no ~
TrapezoidTear ASTM IJ.45:lS lbs. 35 65 8!I 95 115 138
/\pp!!lll1 Opening Si!B ASJMIJ-4751 USSil'la 70 10 !DO 100 100 !DO Number
PermittMty ASTM IJ.4491 g~/mlnlft' 100 90 80 70 00 60 sec.-1 2.0 1.7 1.5 1.1 0.9 0.7
Permeabflity A.ITMIJ.Mm cm/sec .2 1 .2 .2 .2 .2
Thicl<n"3 ASTMD-1777 mils 40 * 65 so 110 130 116 ;: ,.
I
Grab Tensile AS1M0·4632 lbs. 100/115 225!200 275/270 3151310 410/370 610/410
.. ,. Grab Eloogation ASIM0·4B32 \I 75 65 65 65 65 65
Mullen Burst ASJMD-3790 psi 285 410 575 650 1115 920
l'unolUIO ASTM IJ-4933 lbs. 75 120 170 190 21D 270
TraP"'ld Tear ASTMD·4&13 1;;. 60/50 !Oll'llO 140/120 1601140 111S1165
Apparent Opening Si2a ASTM0·4751 US Sl6'1e 70/120 70/140 100/200 100+ 100+ 100+ Number
ParmittMtv ASTMD-4491 ga11rn1n11e 150 110 100 BO 70 60 ..... 3.1 2.0 1.8 1.5 1.3 1.0
Permeability A.ITM D-4491 cmher: .35 .3J .27 .26 .25 .23
Roll Width ft. 16 15 15 16 16 16
Roll length ft, 1200 900 600 600 450 380 I
Gross We~bt n.. roo 550 5110 MO m 500
1:
1000 1000 750 600
1¥\mow mwic.s t F\~
\, ~~llb!Cfl.
''Mvx>CQ ~te ~ 6roh~x;tite.s 11 H v 1
--\
. : ·)
-. -·'
CELL4B.OUT
D **********************~******************************************************* ******************************************************************************
** ** ** ** ** ** ** ** **
HYDROLOGIC EVALUATION OF LANDFILL PERFORMANCE
HELP MODEL VERSION 3.07 (1 NOVEMBER 1997) DEVELOPED BY ENVIRONMENTAL LABORATORY
USAE WATERWAYS EXPERIMENT STATION FOR USEPA RISK REDUCTION ENGINEERING LABORATORY
** ** ** ** **
** **
** ** **********************~******************************************************* ******************************************************************************
PRECIPITATION DATA FILE: TEMPERATURE DATA FILE:
SOLAR RADIATION DATA FILE: EVAPOTRANSPIRATION DATA:
SOIL AND DESIGN DATA FILE:
OUTPUT DATA FILE:
C:\HLP3\IUC\IUC30.D4 C:\HLP3\IUC\IUC30.D7
C:\HLP3\IUC\IUC30.Dl3 C:\HLP3\IUC\IUC30.Dll
c:\HLP3\IUC\Cell4B.D10
c:\HLP3\IUC\Cell4B.OUT
TIME: -12 : 18 DATE: 8/30/2007
--·-~) if*****************************************************************************
TITLE: IUC slimes Drain Analysis cell 4B
.......
******************************************************************************
NOTE: INITIAL MOISTURE CONTENT OF THE LAYERS AND SNO\'I WATER \'/ERE
-COMPUTED AS NEARLY STEADY-STATE VALUES BY THE PROGRAM.
LAYER 1
TYPE 1 -VERTICAL PERCOLATION LAYER
MATERIAL TEXTURE NUMBER 0
THICKNESS = 36.00 INCHES POROSITY = 0.4700 VOL/VOL
FIELD CAPACITY = 0.2220 VOL/VOL WILTING POINT 0.1000 VOL/VOL
INITIAL SOIL WATER CONTENT = 0.1980 VOL/VOL EFFECTIVE SAT. HYO. COND. = 0.520000001000E-03 CM/SEC
LAYER 2
TYPE 2 -LATERAL DRAINAGE LAYER
Page,1
J:
L
r ,_
)
CELL4B.OUT
MATERIAL TEXTURE NUMBER 0
THICKNESS POROSITY
FIELD CAPACITY WILTING POINT
= 6.00 INCHES
= 0.4700 VOL/VOL
= 0.2220 VOL/VOL
= 0.1040 VOL/VOL
= 0.2220 VOL/VOL INITIAL SOIL WATER CONTENT
EFFECTIVE SAT. HYO. COND.
SLOPE
= 0.520000001000E-03 CM/SEC = 1.00 PERCENT DRAINAGE LENGTH = 75.0 FEET
GENERAL DESIGN AND EVAPORATIVE ZONE DATA
NOTE: SCS RUNOFF CURVE NUMBER WAS COMPUTED FROM DEFAULT
SOIL DATA BASE USING SOIL TEXTURE # 7 WITH BARE GROUND CONDITIONS, A SURFACE SLOPE OF 1.% AND A SLOPE LENGTH OF 75. FEET.
SCS RUNOFF CURVE NUMBER = 88.80 FRACTION OF AREA ALLOWING RUNOFF = o.o PERCENT
AREA PROJECTED ON HORIZONTAL PLANE = 1.000 ACRES EVAPORATIVE ZONE DEPTH = 16.0 INCHES
INITIAL WATER IN EVAPORATIVE ZONE = 2.689 INCHES
UPPER LIMIT OF EVAPORATIVE STORAGE = 7.520 INCHES
LOWER LIMIT OF EVAPORATIVE STORAGE = 1.600 INCHES INITIAL SNOW WATER = 0.000 INCHES INITIAL WATER IN LAYER MATERIALS = 8.458 INCHES TOTAL INITIAL WATER = 8.458 INCHES TOTAL SUBSURFACE INFLOW = 0.00 INCHES/YEAR
EVAPOTRANSPIRATION AND WEATHER DATA ------------------------------------
NOTE: EVAPOTRANSPIRATION DATA WAS OBTAINED FROM GRAND JUNCTION COLORADO
STATION LATITUDE = 39.07 DEGREES
MAXIMUM LEAF AREA INDEX = 1.00 START OF GROWING SEASON (JULIAN DATE) = 109 END OF GROWING SEASON (JULIAN DATE) = 293 EVAPORATIVE ZONE DEPTH = 16.0 INCHES AVERAGE ANNUAL WIND SPEED = 8.10 MPH
AVERAGE lST QUARTER RELATIVE HUMIDITY = 60.00 % AVERAGE 2ND QUARTER RELATIVE HUMIDITY = 36.00 %
AVERAGE 3RD QUARTER RELATIVE HUMIDITY = 36.00 % AVERAGE 4TH QUARTER RELATIVE HUMIDITY = 57.00 %
NOTE: PRECIPITATION DATA WAS SYNTHETICALLY GENERATED USING
COEFFICIENTS FOR GRAND JUNCTION COLORADO
NORMAL MEAN MONTHLY PRECIPITATION (INCHES)
JAN/JUL FEB/AU_G MAR/SEP APR/OCT MAY/NOV JUN/DEC
Page 2 i
') ... , .
...
') ··, ·'
0.64 0.47
0.54
0.91
CELL4B.OUT
0.75 0.71
0.70 0.87
0.76
0.63
NOTE: TEMPERATURE DATA WAS SYNTHETICALLY GENERATED USING COEFFICIENTS FOR GRAND JUNCTION COLORADO
NORMAL MEAN MONTHLY TEMPERATURE (DEGREES FAHRENHEIT)
0.44
0.58
JAN/JUL FEB/AUG MAR/SEP APR/OCT MAY/NOV JUN/DEC ----------------------------
25.50
78.90
33. 50 75.90 41. 90 67.10 51. 70 54.90 62.10 39.60 72.30 28.30
NOTE: SOLAR RADIATION DATA WAS SYNTHETICALLY GENERATED USING
COEFFICIENTS FOR GRAND JUNCTION COLORADO
AND STATION LATITUDE = 39.07 DEGREES
*******************************************************************************
AVERAGE MONTHLY VALUES IN INCHES FOR YEARS 1 THROUGH 10 -------------------------------------------------------------------------------
JAN/JUL FEB/AUG MAR/SEP APR/OCT MAY/NOV JUN/DEC ------------------------------------------PRECIPITATION -------------TOTALS 0.44 0.44 0.65 0.81 0.75 0.52 0.39 1.08 0.58 1.00 0.94 0.54
STD. DEVIATIONS 0.23 0.30 0.31 0.44' 0.53 0.63
0.30 0.48 0.44 0.63 0.52 0.31
RUNOFF ------TOTALS o.ooo o.ooo o.ooo. 0.000 0.000 o.ooo
0.000 o.ooo o.ooo o.ooo 0.000 0.000
STD. DEVIATIONS 0.000 o.ooo o.ooo o.ooo 0.000 o.ooo 0.000 0.000 0.000 0.000 o.ooo 0.000
EVAPOTRANSPIRATION ------------------TOTALS 0.441 0.542 0.627 0.714 0.941 1.152
0.511 0.980 0.481 0.737 0.589 0.454
STD. DEVIATIONS 0.213 0.272 0.280 0.352 0.544 o. 560
0.398 0.510 0.395 0.637 0.250 0.224
PERCOLATION/LEAKAGE THROUGH LAYER 2 ------------------------------------TOTALS 0.0000 0.0000 0.0009 0.0011 0.0002 0.0008
0.0003 0.0000 0.0000 0.0000 0.0010 0.0000
STD. DEVIATIONS 0.0000 0.0000 0.0020 0.0027 0.0008 0.0019
Page 3
,·
1:
i:
'· t·
f•
'
! ' i i ' i.
I !
-------------~~-----------------------------------------------~-~-------------·------------. --·--. -. ' ---------. ---------------------------------. ... .. --"" ----·-··· ·----------·-· . -•...
\,_)
0.0009 CELL4B.OUT 0.0000 0.0000 0.0000 0.0032 0.0000
*******************************************************************************
*******************************************************************************
AVERAGE ANNUAL TOTALS & (STD. DEVIATIONS) FOR YEARS 1 THROUGH 10
--------------~-------~--------------------------------------------------------INCHES cu. FEET PERCENT -----------------------------------------PRECIPITATION 8.16 ( 1.320) 29628.1 100.00
RUNOFF 0.000 ( 0.0000) 0.00 0.000
EVAPOTRANSPIRATION 8.168 ( 1. 5732) 29651. 33 100.079
PERCOLATION/LEAKAGE THROUGH LAYER 2 . 0.00442 ( 0.00727) 16.060 0.05420
CHANGE IN WATER STORAGE -0.011 ( 0.7860) -39. 33 -0.133
*******************************************************************************
a
******************************************************************************
PEAK DAILY VALUES FOR YEARS
PRECIPITATION
RUNOFF
PERCOLATION/LEAKAGE THROUGH LAYER 2
SNOW WATER
MAXIMUM VEG. SOIL WATER (VOL/VOL)
MINIMUM VEG. SOIL WATER (VOL/VOL)
1 THROUGH
(INCHES) ----------0.86
o.ooo
0.003089
o. 72
10
(CU. FT.)
-----------~~
o. 2271
0.1000
3121. 800
0.0000
11.21440
2615.3926
******************************************************************************
a **********************~*******************************************************
FINAL WATER STORAGE AT END OF YEAR 10
LAYER (INCHES) (VOL/VOL) -----------------1 6.9017 0.1917
2 1. 3320 0.2220
Page 4
;,
:.
./
.)
SNOW WATER
CELL4B.OUT
0.116
****************************************************************************** ******************************************************************************
Page 5
r !
i
I ,.
'
Updated Tailings Cover Design Report

APPENDIX I

SETTLEMENT MONITORING STRATEGY
Updated Tailings Cover Design Report

Energy Fuels Resources (USA) Inc. MWH Americas, Inc.
I-1 May 2016
I.1 INTRODUCTION
This appendix outlines the strategy for monitoring of settlement of the cover surface on tailings management Cells 2, 3, 4A, and 4B after placement of the reclamation cover. Initial settlement
monitoring of the interim cover surface is conducted prior to final cover construction. After
construction of the final cover system, settlement monitoring will be conducted (as outlined below) as part of post-reclamation performance monitoring.
I.2 OBJECTIVES
There are two objectives for monitoring settlement associated with the tailings management
cells: (1) assurance that the materials in the tailings management cells have stabilized prior to construction of the final cover system, and (2) after final cover construction, verification that the final cover surface is not experiencing significant settlement. These objectives are assessed by
measurement of the elevations of monitoring points at selected locations across the cell surfaces. I.3 MONITORING
To meet these objectives, settlement monitoring for the top surface of the tailings management cells would consist of two phases: (1) monitoring the interim cover surface prior to final cover
system construction, and (2) monitoring the top-of-cover surface after final cover system construction. The proposed and existing monitoring point locations are shown on Figure I.1.
These points are located on an approximate grid spacing of 225 feet by 425 feet (north-south by
east-west).
Monitoring of the existing settlement monuments in Cell 2 and Cell 3 follows the Settlement
Monitoring Plan approved by DWMRC for the site. After placement of final cover material, the existing settlement monuments will be extended or replaced to monitor settlement of the final
cover surface. For areas without settlement monuments, settlement monuments will be installed per the
Technical Specifications after interim cover placement. Settlement monuments will be extended during or installed after final cover placement per the Technical Specifications. Settlement
monitoring will be conducted in accordance with the most recent version the DWMRC approved
Settlement Monitoring Plan. Monitoring of the interim cover surface is conducted at the end of operations to measure rates
and locations of settlement prior to construction of the final cover system. Decreasing trends in settlement followed by maximum of 0.1 feet (30 mm) of cumulative settlement over 12 months
(for 90 percent of the settlement monuments) is considered acceptable to proceed with
placement of the final cover.
After construction of the final cover system, settlement monitoring will be conducted as part of
post-closure performance monitoring to verify that the final cover surface is not experiencing significant settlement. It is recommended that settlement monuments be monitored weekly for
the first month after final cover construction, biweekly for the second month, and monthly thereafter for the first two years. Monitoring frequency is recommended as quarterly after two years. A minimum monitoring period of 5 years is recommended. Decreasing trends in
settlement followed by maximum of 0.1 feet (30 mm) of cumulative settlement over 12 months
Updated Tailings Cover Design Report

Energy Fuels Resources (USA) Inc. MWH Americas, Inc.
I-2 May 2016
(for 90 percent of the settlement monuments) is recommended as acceptable for defining when
the final cover surface is no longer experiencing significant settlement.
3-4S
3-5S
3-5C
3-4C
3-5N
4A-1N
4A-2N
4A-3N
4A-1C
4A-2C
4A-3C
4A-1
4A-2
4A-3
4A-2S
4A-3S
4B-1N
4B-2N
4B-3N
4B-1C
4B-2C
4B-3C
4B-1
4B-2
4B-3
4B-1S
4B-2S
4B-3S
CELL 3
CELL 4B
CELL 4A
CELL 2
CELL 1
4A-1S
4A TOE
3-1N
3-1C
3-2S
3-2N
3-3N
3-3C
3-7S
3-8C
3-7C
3-7N
3-6C
3-6S
2W1
2W3-S
2W4-N
2W4-S
2W5-N
2W5-S
2W6-C
2W6-S
2W7-N
2W7-S
2E1-2S
2E1-1S
2E1-N
SETTLEMENT MONITORING POINTS
1009740 SETLMON
WHITE MESA MILL TAILINGS RECLAMATION
MAY 2016
LEGEND:
FIGURE I.1
4A-2S
4A TOE
ENERGY FUELS
Updated Tailings Cover Design Report
APPENDIX J

REVEGETATION PLAN

Updated Tailings Cover Design Report
Energy Fuels Resources (USA) Inc. MWH Americas, Inc.
J-1 August 2015
J.1 INTRODUCTION
Revegetation of the tailing cells at the White Mesa Mill Site will be completed following
construction of the cover system. The revegetation process will establish a grass-forb-shrub
community consisting primarily of native, long-lived perennial grasses, forbs, and shrubs that are highly adapted to the climatic and edaphic conditions of the site. Revegetation methods will
follow state-of-the-art techniques for soil amendments, seedbed preparation, seeding and mulching. In addition, quality assurance and quality control procedures will be followed to ensure that revegetation methods are implemented correctly and the results of the process
meet expectations.
J.2 PLANT SPECIES AND SEEDING RATES
The following 15 species (11 grasses, 2 forbs, and 2 shrubs) are proposed for the ET cover system at the White Mesa Mill site. These species were selected for their adaptability to site conditions, compatibility, and long-term sustainability. Species were also selected based on the
assumption that institutional controls will exclude grazing by domestic livestock. The proposed species are:
• Western wheatgrass, variety Arriba (Pascopyrum smithii)
• Bluebunch wheatgrass, variety Goldar (Pseudoroegneria spicata)
• Slender wheatgrass, variety San Luis (Elymus trachycaulus)
• Streambank wheatgrass, variety Sodar (Elymus lanceolatus ssp. psammophilus)
• Pubescent wheatgrass, variety Luna (Thinopyrum intermedium ssp. barbulatum)
• Indian ricegrass, variety Paloma (Achnatherum hymenoides)
• Sandberg bluegrass, variety Canbar (Poa secunda)
• Sheep fescue, variety Covar (Festuca ovina)
• Squirreltail, variety Toe Jam Creek (Elymus elymoides)
• Blue grama, variety Hachita (Bouteloua gracilis)
• Galleta, variety Viva (Hilaria jamesii)
• Common yarrow, no variety (Achillea millefolium)
• White sage, variety Summit (Artemisia ludoviciana)
• Fourwing saltbush, variety Wytana (Atriplex canescens)
• Rubber rabbitbrush (Ericameria nauseosus).

The ecological characteristics of these species are described in detail in Appendix D.
Table J.1 presents broadcast seeding rates for each species. Seeding rates were developed based on the objective of establishing a permanent cover of grasses, forbs, and shrubs in a mixture that would promote compatibility among species and minimize competitive exclusion or
loss of species over time. Seeding rates were developed on the basis of number of seeds per unit area (e.g. number of seeds per square foot) and then converted to weight per unit area (e.g.
pounds per acre).
Updated Tailings Cover Design Report
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Table J.1. Species and seeding rates proposed for ET cover at the White Mesa Mill Site
Scientific Name Common Name Varietal
Name
Native/
Introduced
Seeding
Rate (lbs PLS/acre)†
Seeding
Rate (# seeds/ft2)
Grasses
Pascopyrum smithii Western wheatgrass Arriba Native 3.0 7.9
Pseudoroegneria spicata Bluebunch wheatgrass Goldar Native 3.0 9.6
Elymus trachycaulus Slender wheatgrass San Luis Native 2.0 6.2
Elymus lanceolatus Streambank wheatgrass Sodar Native 2.0 7.3
Elymus elymoides Squirreltail Toe Jam Native 2.0 8.8
Thinopyrum
intermedium
Pubescent wheatgrass Luna Introduced‡ 1.0 1.8
Achnatherum
hymenoides
Indian ricegrass Paloma Native 4.0 14.7
Poa secunda Sandberg bluegrass Canbar Native 0.5 11.4
Festuca ovina Sheep fescue Covar Introduced‡ 1.0 11.5
Bouteloua gracilis Blue grama Hachita Native 1.0 16.5
Hilaria jamesii Galleta Viva Native 2.0 7.3
Forbs
Achillea millefolium,
variety occidentalis
Common yarrow VNS* Native 0.5 32
Artemisia ludoviciana White sage VNS Native 0.5 45
Shrubs
Atriplex canescens Fourwing saltbush Wytana Native 3.0 3.4
Ericameria nauseosus Rubber rabbitbrush VNS Native 0.5 4.6
Total 26.5 188
†Seeding rate is for broadcast seed and presented as pounds of pure live seed per acre (lbs PLS/acre).
‡Introduced refers to species that have been ‘introduced’ from another geographic region, typically outside of North America. Also referred to as ‘exotic’ species. * VNS=Variety Not Specified but seed
source would be designated from sites similar to the Mill Site. Seeding rates are calculated from an expected field emergence for each species and the desired number of plants per unit area. For purposes of calculation, field emergence for small
seeded grasses and forbs is assumed to be around 50 percent if germination is greater than 80
percent. Field emergence is assumed to be around 30 percent if germination is between 60 and 80 percent. The Natural Resource Conservation Service recommends a seeding rate of 20 to
30 pure live seeds per square foot as a minimum number of seeds when drill seeding single species in areas with an annual precipitation between 6 and 18 inches. Twenty pure live seeds per square foot, with an expected field emergence of 50 percent should produce an adequate
number of plants on the seeded area to control erosion and suppress annual invasion. This seeding rate is primarily for favorable growing conditions, soils that are not extreme in texture,
gentle slopes, north or east facing aspect, good moisture, adequate soil nutrients and single
species vs. multiple species in a mixture. When conditions are less favorable when the seed is broadcast, or when multiple species are in a mixture the seeding rates are increased.

A Quality Assurance/Quality Control Plan for application rates and procedures for confirming that specified application rates are achieved is as follows. The first step begins with a seed
order. Seed would be purchased as pounds of pure live seed. Each State has a seed certifying agency and certification programs may be adopted by seed growers. Certification of a container
Updated Tailings Cover Design Report
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J-3 August 2015
of seed assures the customer that the seed is correctly identified and genetically pure. The State agency responsible for seed certification sets minimum standards for mechanical purity
and germination for each species of seed. When certified, a container of seed must be labeled
as to origin, germination percentage, date of the germination test, percentage of pure seed (by weight), other crop and weed seeds, and inert material. The certification is the consumer’s best
guarantee that the seed being purchased meets minimum standards and the quality specified. Once the seed is obtained, seed labels would be checked to determine the percent PLS and the
date that the seed was tested for percent purity and percent germination. If the test date is greater than 6 months old, the seed would be tested again before being accepted. Seed will be applied using a broadcasting method as described below.

J.3 SOIL FERTILIZATION AND ORGANIC MATTER AMENDMENT
The physical and chemical characteristics of the soil that will be used for the cover system are presented in Appendix D. Based on this analysis, there are three soil properties that appear to
be deficient for sustained plant growth and will need to be treated prior to seeding and to ensure
that the soil provides adequate carbon and plant essential nutrients for initial plant establishment and long-term sustainability. The soil properties that will need treatment include
percent organic matter, total nitrogen, and plant available potassium (Appendix D). The upper 15 cm of the water storage layer will be treated with an organic matter amendment to alleviate the existing deficiencies. This treatment will be applied after the water storage layer is in place
and before placement of the topsoil-gravel erosion protection layer. Further chemical analysis will be conducted prior to placement of the water storage layer to verify the chemical properties of this material and to finalize the proposed treatment. In order for the potential cover soil to
function as a normal soil and provide long-term sustainable support for the vegetation component of the ET cover, it will be amended to improve organic matter content, nitrogen and potassium levels. An organic matter amendment will also improve available water holding
capacity and cation exchange capacity. The proposed organic amendment is composted biosolids. Composted biosolids have been successfully used in mined land reclamation over
the past 40 years. This amendment would also provide a source of soil microorganisms that will
function to cycle nutrients over time and ensure sustainable plant growth. Composted biosolids would be applied at a rate of 10 tons/acre and incorporated into the upper six inches of the
water storage layer of the cover system. Composted biosolids are also a source of nitrogen,
phosphorous and potassium and will serve to improve organic matter content and soil fertility.
The topsoil-gravel erosion control layer will not be amended for organic matter or nutrients to avoid the stimulation of undesirable weedy species. The addition of nutrients, especially nitrogen, during revegetation is known to stimulate the growth of annual weeds at the potential
detriment of seeded perennial species. Withholding nutrient additions from the topsoil-gravel cover will allow the seeded species to establish without the unwanted competition from undesirable weedy species.
J.4 SEEDBED PREPARATION
Following placement of the topsoil-gravel erosion protection layer, the area will be harrowed to
reduce any compaction that may have occurred during placement of the cover and to create an uneven surface for optimum seedbed conditions. Since seeding will be conducted with a
broadcast method it is critical for the soil surface to be loose and uneven, but also have a
Updated Tailings Cover Design Report
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firmness below the soil surface to allow proper seeding depth and to promote optimum seed-soil contact for germination and initial plant establishment.
J.5 SEEDING
Seed will be applied using a broadcasting method as soon as practicable following seedbed
preparation. This procedure will use a centrifugal type broadcaster (or similar implement), also called an end-gate seeder. These broadcasters operate with an electric motor and are usually mounted on the back of a small tractor and generally have an effective spreading width of about
20 feet or more. Prior to seeding, a known area will be covered with a tarp and seed will be distributed using the broadcaster and simulating conditions that would exist under actual seeding conditions. Seed will then be collected and weighed to determine actual seeding rate in
terms of pounds per acre. This process will be repeated until the specified seeding rate is obtained. During the seeding process, the seeding rate will be verified at least once by
comparing pounds of seed applied to the size of the area seeded. In addition, seed will be
applied in two separate passes. One-half of the seed will be spread in one direction and the other half of seed will be spread in a perpendicular direction. This will ensure that seed
distribution across the site is highly uniform and also provide the opportunity to adjust the
seeding rate if the specified rate is not being achieved. Seeding will not occur if wind speeds exceed 10 mph.
Immediately following seeding, the area will be lightly harrowed to provide seed coverage and to maximize seed-soil contact. This step in the revegetation process will ensure that the seed is
placed at an optimum seeding depth and in good soil contact for proper germination conditions. Seeding will take place as soon as practical after the cover system is in place. Successful
seeding in southeastern Utah can occur either in late fall (e.g. October) as a dormant seeding, with germination and establishment occurring the following spring or can be conducted in June, prior to the summer monsoon season. The timing for seeding will be dependent upon the
construction schedule for the cover system.
J.6 MULCHING
A mulch will be applied immediately following seeding to conserve soil moisture for seed germination and initial plant establishment. Mulching will also provide additional soil erosion
protection from both wind and water until a plant cover is established. A weed-free, wood-fiber
mulch will be applied to the seeded area at a rate of 1.5 tons/acre. Wood fiber mulch will consist of specially prepared wood fibers and will not be produced from recycled material such
as sawdust, paper, cardboard, or residue from pulp and paper plants. The fibers will be dyed an appropriate color, non-toxic, water-soluble dye to facilitate visual metering during application. Wood fiber mulch will be supplied in packages and each package will be marked by the
manufacturer to show the air-dry weight. The wood fiber mulch will be applied by means of hydraulic equipment that utilizes water as the
carrying agent. The mulch will be applied in a uniform manner at a minimum rate of 1.0 ton/acre. A continuous agitator action, that keeps the mulching material and approved additives in uniform suspension, will be maintained throughout the distribution cycle. The pump pressure
will be capable of maintaining a continuous non-fluctuating stream of slurry. The slurry distribution lines will be large enough to prevent stoppage and the discharge line will be
equipped with a set of hydraulic spray nozzles that will provide an even distribution of the mulch
Updated Tailings Cover Design Report
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J-5 August 2015
slurry to the seedbed. Mulching will not be done in the presence of free surface water resulting from rains, melting snow, or other causes.

A tackifier will be used with the wood fiber mulch to improve adhesion. The tackifier will be a biodegradable organic formulation processed specifically for the adhesive binding of mulch. In
addition, the tackifier will uniformly disperse when mixed with water and will not be detrimental to the homogeneous properties of the mulch slurry. Tackifier may be added either during the manufacturing of the mulch or incorporated during mulch application. Tackifier will have
characteristics of hydrating and dispersing in circulating water to form a homogeneous slurry and remain in such a state in the hydraulic mulching unit when mixed with the wood fiber mulch. When applied, the tackifier will form a loose chain-like protective film, but not a plant inhibiting
membrane, which will allow moisture to percolate into the underlying soil, while helping bind seeds to the soil surface during germination and initial seedling growth, after which the tackifier
will break down through natural processes.
Updated Tailings Cover Design Report
APPENDIX K
DURABILITY
ATTACHMENT H
ROCK TEST RESULTS
BLANDING AREA GRAVEL PITS
PREPARED BY
INTERNATIONAL URANIUM (USA) CORP.
INDEPENDENCE PLAZA
1050 17rn STREET, SUITE 950
DENVER, CO 80265
TO: Harold R. Roberts cc: William N. Deal
FROM: Robert A. Hembree
DATE: November 20, 1998
SUBJECT: Rock Test Results -Blanding Area Gravel Pits
Attached you will find the results for lab tests that were performed on rock samples obtained from
three gravel sources around the White Mesa Mill. These samples were taken from the Cow Canyon
pit located just north of Bluff ( 15 miles south of the mill), the Brown Canyon pit located on the east
side of Recapture Canyon four miles northeast of the mill, and the North Pit located one mile
northeast of Blanding. A 75 pound sample of material was collected from each site, each sample
was crushed and screened to a +1/2-1 Yi inch size. Testing was performed by Western Colorado
Testing in Grand Junction, Colorado. All samples were tested for specific gravity, absorption, sulfate
soundness and L.A. Abrasion.
Test results indicate that all three sites score high enough to be used as rip rap sources for the
reclamation cover at the mill (see attached scoring calculations). The Cow Canyon site scores high
enough that there would be no over-sizing required; it is suitable for use in channels as well as on
side and top slopes. The Brown Canyon site requires the most over-sizing at nineteen percent (19%).
The North Pit material would require over-sizing of 9.35%. These test results prove that there are
sources of rip rap material within a reasonable distance of the mill site. The average over-sizing
factor for the three sites is 9.5%, which is well below the 25% number used in the 1996 reclamation
cost estimate. The over-sizing factor used in the Titan Design Study was also 25%.
Based on the results of the testing IUC could use any of these three sites. The North Pit would be
the most reasonable choice of material sites since it has a lower over-sizing factor than the Brown
Canyon site and is closer to the mill than the Cow Canyon site. The North Pit also has the advantage
of being an established public pit on BLM administered land.
RAH/rah
/
International Uranium (USA) Corp.
WHITE MESA MILL RECLAMATION
NRC Rip Rap Scoring Calculations
Weighting Factors for Igneous Rocks
Oversizing for side slopes, top slopes, and well drained toes and aprons
Rock Scoring less than 50% is rejected, rock scoring over 80% does not require oversizing
Cow Canyon Pit (Bluff)
Lab Test Lab Results Score Weight Score x Weight Max. Score
Specific Gravity 2.63 7.5 9 67.5 90
Absorption,% 0.47 8.25 2 16.5 20
Sodium Sulfate Sound.,% 0.2 10 11 110 110
L.A. Abrasion, % 6.4 7.5 7.5 10
Totals 201.5 230
Overall Score 87.611%
Oversizing none %
Brown Canyon Site
Lab Test Lab Results Score Weight Score x Weight Max. Score
Specific Gravity 2.525 5.5 9 49.5 90
Absorption, % 2.61 1.75 2 3.5 20
Sodium Sulfate Sound., % 5.5 7.5 11 82.5 110
L.A. Abrasion,% 10.3 4.75 4.75 10
Totals 140.25 230
Overall Score I 60.981%
Oversizing 19.02 %
North Pit (N. Blanding)
Lab Test Lab Results Score Weight Score x Weight Max. Score
Specific Gravity 2.557 6.25 9 56.25 90
Absorption, % 2.84 1.25 2 2.5 20
Sodium Sulfate Sound., % 3.2 8.75 11 96.25 110
L.A. Abrasion, % 6.3 7.5 7.5 10
Totals 162.5 230
Overall Score I 70.651%
Oversizing 9.35 %
WESTERN
COLORADO
TESTING,
INC.
529 25 1/2 Road. Suite B-101
Grand !unction, Colorado 81 505
[phone] • Fax [phone]
International Uraniua USA Corporation
Independence Plaza
1050 17th Street
Denver, Colorado 80265
Attention: Mr. Bob Hembree
Reference: Rock Durability Testing
November 16, 1998
WCT #811898
As reque•tad, three ( 3) potential sources of r iprllp for use in
reclamation of tailing• pond• in Blanding, Utah were tested for
rock durability. Th• riprap material was obtained, crushed to
testing size, and delivered to Western Colorado Te•tin9, I.no. by
the client. The three sources of material were tested for
specific gravity and absorption (ASTM C127), Sodium Sulfate
Soundness (ASTM C88), and Los Angeles Abrasion (ASTM C131). The
results of the teatin9 are provided below.
Dal
Bulk specific Gravity, g/cc
sso Specific Gravity, g/cc
Apparent Specific Gravity, g/cc
Water Absorption, t
SodiUlll Sulfate Soundness, Avg. % Loss
L.A. Abrasion, t Loss @ 100 Rev.
111ult
2.630
2.642
2.663
0.47
0.2
6.4
Pa9e 2 "
International Uranium USA Corpor~tion
WCT #811898
November 16, 1998
t:i:.;:\.l'.~f\i\'ii;;[i1\lt!11m:;\fr111r1111:;1;11r~~::m11.11;1,.1[:!IM1~:f"~~~'i:'ri:!:~~~·:~~~~~~·;iirlii::;··:1:··1~:1r;;1:;::1;1i1:1:,~:;:1,-1::·r;::i.i:··-,~-·:·
. ·" .
Bal
Bulk Specific Gravity, q/cO·
SSD Speeitic.'Gravity, g/cc
Apparent· Specific Gravity, g/cc
Water Abaorption, t
Sodiwa> Sulfate Soundne1u1, Avg. ' Loss .
L.A. Al:>ra•ion, t Lo•• @ 100 Rev.
111ult
2.4~0
2.525
2.1529
2.61
5.5.
10.J
·?;1'-fl11~1!il;1:.!t1!~w111i11:~?l~~fjrnmi11i~i1mi1i1:11i!t~lfi1'..!1M~w.;i\~\ri~~~~:11~~~,i'.;i.:i1rt11\r;1;1tr:i!;1!1JWl-I:fi;,fi _i:-i;;!;·:·!~::::·:.::'·:::, •··
bll
Bulk Speoifig Gravity, q/cc
SSD Specific Gravity, q/ee
Apparent specific Gravity, q_/cc·
Water Absorption, t
SodiWll Sultate soundness, Avg. ,.Loos
L.A. Abrasion, t Lo•• f 100 Rev.
,. ,..,.,,
111\llt
2~485
2.557
2.674.
2.84
3.2
15 • 3
If thera are any questiona or if additional testinq is needed,
pleeu1e .··!eel free to contact our off ice,
Respecttully Su.bmitted:
WU'l'Dll COLOIUU>O t•R'l'ISG, I)IC.
:Kyle Alpha
Construction services Manager
Updated Tailings Cover Design Report

APPENDIX L

CELL 2 RECLAMATION COVER IMPLEMENTATION AND
PERFORMANCE ASSESSMENT PLAN

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L.1 INTRODUCTION
This appendix presents the plan for implementing final cover placement on the White Mesa Cell
2 tailings cell. Discussion on cover performance assessment and monitoring is also provided.
The White Mesa Uranium Mill (Mill) is located in San Juan County in southeastern Utah, approximately 6 miles south of Blanding, Utah. The site is located on White Mesa, a flat area
bounded on the east by Corral Canyon, to the west by Westwater Creek, and to the south by Cottonwood Canyon.
Energy Fuels Resources (USA) Inc. (EFRI) facilities at the site consist of a uranium processing
mill and five lined tailings/process solution storage cells located within an approximately 686-acre restricted area. The tailings management system is located south of the Mill and comprise the following:

• Cell 1 – 55 acres, used for the evaporation of process solutions
• Cell 2 – 65 acres, used for storage of barren tailings sands (which has been filled with tailings sands and covered with a minimum of approximately 3 feet of interim cover across
the cell)
• Cell 3 – 70 acres, used for storage of barren tailings sands (which has been partially
covered with a minimum of approximately 3 feet interim cover across the majority of the cell, except the center of the cell which is currently receiving mill waste)
• Cell 4A – 40 acres, used for storage of barren tailings sands and evaporation of process
solutions
• Cell 4B – 40 acres, currently being used for evaporation of process solutions
Cell 2 ceased receiving tailings in 1995 and 11e.(2) byproduct materials in 2000 and is no longer
in operation. EFRI placed interim fill in stages on Cell 2 from 1991 through 2008. Additional minor volumes of interim fill (less than 1 foot in thickness) were placed on Cell 2 in select areas after 2008.
L.1.1 Terms of Reference
On November 11, 2015, the Utah Department of Environmental Quality Division of Waste
Management and Radiation Control (DWMRC) recommended EFRI develop a plan to begin
reclamation of the tailings management system. This plan would consist of placing the proposed cover system presented in White Mesa Reclamation Plan, Revision 5.1 on the Cell 2 and demonstrating acceptable cover performance via a performance monitoring program. Cover
performance monitoring was recommended to follow NUREG/CR-7028 (Benson et al. 2011).
This document has been prepared for EFRI by MWH, Inc. (MWH) as an appendix to the Updated
Tailings Cover Design Report and to provide specific information regarding construction and
monitoring of the evapotranspiration (ET) cover to be placed on Cell 2.
L.1.2 Scope of Document
This document presents construction requirements, construction sequencing, and the plan for
performance monitoring and assessment of the proposed Cell 2 reclamation cover system. This document also presents a brief overview of the design of the Cell 2 reclamation cover system.

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The White Mesa reclamation cover system design, regulatory criteria, and design analyses are presented in the main text of the Updated Tailings Cover Design Report.

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L.2 COVER DESIGN
The cover system for reclamation of the tailings cells is designed as a monolithic ET cover. A
monolithic ET cover is the preferred design to minimize infiltration, meet the radon emanation
standard, minimize maintenance over the short and long term, and to promote sustainability. The proposed ET cover has been designed with sufficient thickness to protect against frost
penetration, to attenuate radon flux, to minimize both plant root and burrowing animal intrusion, and to provide adequate water storage capacity to minimize the rate of infiltration into the underlying tailings. Furthermore, the cover is designed to be stable under both static and
anticipated seismic conditions, and to provide tailings isolation under long-term wind and water erosion conditions. The cover system design and associated analyses are presented in the Updated Tailings Cover Design Report.
L.2.1 Cover System Layers
The Cell 2 reclamation cover system will have a minimum thickness of 10.5 feet, and will consist
of the following layers listed below from top to bottom:
• Layer 4 - 0.5 ft (15 cm) thick Erosion Protection Layer (topsoil-gravel admixture or topsoil)
• Layer 3 - 3.5 ft (107 cm) thick Growth Medium Layer acting as a Water Storage/Biointrusion/Frost Protection/Secondary Radon Attenuation Layer (loam to
sandy clay)
• Layer 2 - 4.0 ft (122 cm) thick Compacted Cover acting as the Primary Radon
Attenuation Layer (highly compacted loam to sandy clay)
• Layer 1 - 2.5 ft (76 cm) thick (minimum) Interim Fill Layer acting as a Secondary Radon Attenuation and Grading Layer (loam to sandy clay)
All the layers combined comprise the monolithic ET cover system. Layer 1 was placed in stages on Cell 2 as interim cover from 1991 through 2008 and is approximately 3 feet thick. Additional
minor volumes of interim fill (less than 1 foot in thickness) were placed in select areas of Cell 2
after 2008. Layer 1 will provide the platform for the remaining cover system and act as a secondary radon attenuation layer. Layer 2 is the compacted cover layer and will act as the
primary radon attenuation layer. It will be 4 feet thick and compacted to 95 percent of standard
Proctor density. Layer 3 will be the growth medium layer. Layer 3 will also act as a secondary radon attenuation layer and a protection layer for the primary radon attenuation layer (Layer 2).
Layer 3 will be 3.5 feet thick and placed at 85 percent of standard Proctor density to optimize
water storage and rooting characteristics for plant growth. Layer 4 will be a 0.5-foot thick erosion protection layer. This layer will consist of topsoil in areas where the cover is sloped at 0.5 percent
and topsoil-gravel admixture in areas where the cover is sloped at 1 percent. The topsoil-gravel
admixture will consist of topsoil (75 percent) mixed with 1-inch minus gravel (25 percent).
L.2.2 Cover Surface Slopes and Erosion Protection
The top surface of the Cell 2 final cover will be sloped at 0.5 to 1 percent as shown in the Cell 2 cover design drawings (Drawings; provided in Attachment L.1). External side slopes of the
embankments will be graded to 5H:1V (horizontal: vertical). Temporary cover slopes will be located along the berms between Cells 2 and 1, and between Cells 2 and 3 (details shown in
Attachment L.1). At these locations, the cover will be sloped at 5H:1V for a width of approximately
25 to 50 feet from the edge of the berms, along the full length of the berms. During reclamation

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of Cell 1 and Cell 3, the temporary cover slope sections on Cell 2 will be tied into the Cell 1 and Cell 3 cover systems to provide a consistent slope (0.5 to 1 percent) for the final reclamation cover
across the tailings cells.
Cell 2 erosion protection will consist of the following:

• The portions of Cell 2 with a top surface slope of 0.5 percent will be constructed as a
vegetated slope with 6 inches of topsoil.
• The portions of Cell 2 with a top surface slope of 1 percent will be constructed as a
vegetated slope with 6 inches of topsoil (75 percent by weight) mixed with gravel (25 percent by weight; maximum diameter of 1 inch).
• External side slopes graded to 5H:1V will be covered with 6 inches of rounded riprap with
a median rock size of 1.7 inches.
• A rock apron will be constructed in the transition areas along the toes of the north and
west side slopes and the east side slope of Cell 2. The rock apron will consist of a 1-foot thick layer of rounded riprap with a median rock size of 3.4 inches.
• The erosion protection layer for the temporary 5H:1V cover slopes (along the berms between Cells 2 and 1 and Cells 2 and 3) will be covered with 6 inches of topsoil (75
percent by weight) mixed with gravel (25 percent by weight; maximum diameter of 1 inch).

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L.3 COVER PLACEMENT AND REVEGETATION
As outlined in Section L.2, the Cell 2 reclamation cover system will be a minimum of 10.5-feet
thick, with four layers at varying amounts of compaction. Layer 1 of the reclamation cover was
placed on Cell 2 as interim cover primarily from 1991 through 2008, and is approximately 3 feet thick. The remaining reclamation cover layers will be placed in two phases (Phases 1 and 2) on
Cell 2. Between the first and second phases of cover placement, additional cover material would be placed as needed in low areas to maintain positive drainage of the Phase 1 cover surface. The top surface of the final cover will be vegetated after Phase 2 cover construction is completed.
Drawings for Cell 2 reclamation are provided in Attachment L.1. Technical specifications (Technical Specifications) and a construction quality assurance/quality control plan (CQA/QC Plan) for reclamation of the Site are provided as Attachments A and B, respectively, to the White
Mesa Reclamation Plan, Revision 5.1. Cell 2 Cover construction will be performed in accordance with these documents. Additional discussion of cover placement and revegetation is provided in
the following sections.
Phase 1 Cover Construction
Phase 1 cover construction includes placement of: (1) additional interim cover to achieve design
grades prior to placement of cover Layer 2 and (2) the entirety of Layer 2. Cell 2 Phase 1 cover
placement began in April 2016 and is expected to be completed in 2017. A cover performance monitoring test section (Primary Test Section) was constructed in the fall of 2017 within the Cell
2 cover concurrently with the Phase 1 cover placement. Construction of this test section is
discussed in Section L.4. A Supplemental Test Section will be constructed north of the tailings management cells relating to vegetative cover and erosion control.
Instrumentation for monitoring Cell 2 after Phase 1 cover placement will include settlement monuments and piezometers. Existing settlement monuments will be extended upward during Phase 1 cover construction. Standpipe piezometers were installed in June 2016 across Cell 2
during Phase 1 Cell 2 cover construction to monitor water levels within the tailings. Piezometer locations are shown in Figure L.1. The majority of the piezometer locations are adjacent to the settlement monuments. These locations were selected to minimize damage to the piezometers
during cover construction, while providing sufficient locations to evaluate the water levels within the tailings. A few additional locations were selected near the Cell 2 sump to evaluate migration of water towards the sump. Further discussion of settlement monitoring and monitoring of water
levels in the tailings is provided in Section L.4.4.
An as-built report for Cell 2 Phase 1 cover placement and Primary test section construction will
be provided to DWMRC within 90 days after construction completion and receipt of laboratory
testing results. A construction report summarizing the Supplemental Test Section construction will be provided to DWMRC within 90 days after construction of the Supplemental Test Section.
Phase 2 Cover Construction
Phase 2 cover construction consists of placement of Layer 3 and Layer 4 of the cover. Cell 2 Phase 2 cover will be placed after meeting the following milestones:
• Test section performance monitoring is complete (see Section L.4.2 for discussion on test section monitoring)

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• Phase 1 cover settlement criteria has been met (see Section L.4.4 for discussion on
settlement criteria)
• DWMRC approval of performance of the Cell 2 cover test section
Phase 2 cover construction is expected to be completed in one construction season. The final
Phase 2 cover surface will then be revegetated.
Monitoring instrumentation after Phase 2 cover placement will include settlement monuments and
piezometers. Existing settlement monuments will be extended during Phase 2 cover construction.
Piezometers installed across Cell 2 during Phase 1 cover construction will also be extended.
An as-built report for Cell 2 Phase 2 cover placement will be provided to DWMRC within 90 days
after construction completion.
Material Sources
Table L.1 presents estimated volumes of materials required to complete the Cell 2 reclamation
cover system (Phase 1 and Phase 2), and erosion protection. Estimated quantities of materials available for construction of the cover are also provided in Table L.1. Sufficient quantities are available from on-site sources for the topsoil and random fill materials. Gravel materials will be
obtained from off-site commercial sources. Sufficient quantities of riprap and gravel materials have been identified at three commercial sources: (i) the Cow Canyon pit located 15 miles south of the mill, (ii) the Brown Canyon pit located four miles northeast of the mill, and (iii) the North Pit
located one mile northeast of Blanding. Additional discussion of these off-site sources are presented in the main text of the Updated Tailings Cover Design Report. Table L.1. Cell 2 Reclamation Cover Material Quantity Summary
Material Quantity Required for Reclamation (cy) Quantity Available (Identified Sources) (cy)
Random Fill (total for Phase 1 cover placement) 717,200
3,597,000 (on-site stockpiles) Random Fill (total for Phase 2 cover
placement, less erosion protection layer) 200,800
Topsoil (for Layer 4 - Erosion
Protection Layer)
45,200
284,100 (on-site stockpiles)
Gravel (1-inch minus for Layer 4 -
Erosion Protection Layer) 8,000 Sufficient quantity available (off-site
commercial source)
Riprap (D50 = 1.7 in for external side slopes) 1,700 Sufficient quantity available (off-site commercial source)
Riprap (D50 = 3.4 in for rock aprons) 700 Sufficient quantity available (off-site commercial source)

On-site cover material borrow stockpiles locations are shown on Figure L.2 along with the estimated volumes available from each stockpile. Stockpiles to be used for Phase 1 cover
material will be selected to represent the range of cover soil properties, while still allowing for
efficient construction and minimization of haul road distances. The design engineer will provide input on stockpile selection.

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Revegetation
The tailings management system at the Mill site will be revegetated following construction of the
cover system over each cell. Revegetation of the Cell 2 cover will take place at the end of Phase
2 cover construction.
The revegetation process will establish a grass-forb-shrub community consisting primarily of native, long-lived perennial grasses, forbs, and shrubs that are highly adapted to the climatic and edaphic conditions of the site. Revegetation methods will follow state-of-the-art techniques for
soil amendments, seedbed preparation, seeding and mulching. In addition, quality assurance and quality control procedures will be followed to ensure that revegetation methods are implemented correctly and the results of the process meet expectations. A revegetation plan
presenting seedbed preparation, soil amendments, plant species, seeding rates, and quality assurance is included in Appendix J.

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L.4 COVER PERFORMANCE ASSESSMENT
EFRI constructed a performance monitoring test section (Primary Test Section) within the Cell 2
cover concurrently with the 2016 Phase 1 cover placement. The test section was constructed as
a design-build project using the guidelines provided in this appendix. The test section will be monitored to assess performance of the cover system for the tailings cells. The test section
location is shown in the Drawings (Attachment L.1). Discussion on the test section design and plan is provided in Section L.4.1, and discussion on the test section monitoring program is provided in Section L.4.2. A Supplemental Test Section will be constructed north of the tailings
management cells relating to vegetative cover and erosion control. This test section is discussed in Section L.4.3.
L.4.1 Primary Test Section Design and Construction
Design Basis The design of the Primary Test Section is adopted from the installation instructions for the test
sections used in the Alternative Cover Assessment Program (ACAP) (Benson et al., 1999) and
incorporates performance monitoring recommendations provided in NUREG/CR-7028 (Benson et al., 2011) and site-specific recommendations provided by Dr. Craig H. Benson (personal
communication).
The test section was constructed as a large ACAP-style drainage lysimeter that provides direct
measurement of all water balance components except evapotranspiration. Evapotranspiration will be calculated from the other measured water balance components. In-situ soil water content and temperature measurements of the cover soils will be taken within the test section and a
weather data from the station installed adjacent to the test section. Installation instructions used for the test section are provided in Attachment L.2 and are patterned after the ACAP test section installation instructions (Benson et al., 1999) with the following exceptions:

• Soil water tension sensors were not installed. Experience in ACAP showed that data collected
from the soil water tension sensors had little value for evaluating cover performance. Additionally, soil water tension sensors can be challenging to calibrate and operate. Soil water content sensors (water content reflectometers) and temperature sensors were installed.
Although soil water content and temperature are not direct measures of cover performance, data from these sensors are useful information for interpreting cover performance data,
especially when performance metrics are not satisfied.
• The water content reflectometers were installed in two nests rather than the three nests used in ACAP. Experience at the ACAP test sites has shown little spatial variability within the test
sections, such that data from the three sets of nested sensors was very similar (Craig H. Benson, personal communication, May 8, 2012). Two sensor nests were used to provide a
redundant set of water content measurements, as recommended in NUREG/CR-7028
(Benson et al., 2011).
• A sediment basin was not installed for the surface run-off drainage. Experience with the ACAP
test sections showed that sediment control is not needed (Craig H. Benson, personal communication, May 8, 2012).
Location The primary objectives for siting the test section were (1) access to a power source, (2) ease of
access for monitoring, and (3) constructability. Although the monitoring equipment can be set up

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to be powered by solar panels and with cellular telecommunications, data collection is more reliable and efficient when the system is connected to a conventional power source and a land-
line for telecommunications. The northeast, east, and southeast edge of Cell 2 were evaluated
as potential test section locations. The southeast corner of Cell 2 was selected for the test section. This location allows for power access and has better constructability and monitoring access than
the other locations. The location is also in an area where differential settlement is more likely to cause concern than the northeast or east edge of Cell 2. This location allows for assessment of the impact of potential differential settlement on the cover system. The test section is in an area
with 1 percent cover slopes requiring topsoil-gravel admixture erosion protection. It is expected that the topsoil-gravel admixture will be associated with higher rates of infiltration than areas with topsoil for erosion protection.
Size
An ACAP-style test section with a drainage lysimeter will be used for performance monitoring, as
recommended in NUREG/CR-7028 (Benson et al., 2011). The lysimeter within the test section is 32 ft x 64 ft in size. The longer side is oriented parallel to the cover slope, and centered within
the 100 ft x 100 ft test section. Design dimensions for the lysimeter and test section are shown
in the Drawings (see Attachment L.1). The buffer area outside the lysimeter minimizes hydrological and thermal boundary effects and will be used for periodic destructive sampling.
Area surrounding the lysimeter will be used for periodic sampling of soils and biota, as needed. These attributes are the same as those in the monitoring test section recommended in NUREG/CR-7028 (Benson et al., 2011).
The design cover thicknesses for the tailings cells are 10.5 ft, 10 ft, and 9.5 ft for Cell 2, Cell 3, and Cells 4A/4B, respectively. The minimum design cover thickness of 9.5 ft was used for the
lysimeter area of the test section to evaluate the lower bound reclamation cover thickness for the tailings cells. The remaining area within the test section was constructed to the full-depth Cell 2 cover profile (10.5 ft).
Components of Lysimeter
The lysimeter includes the following components as shown in the Drawings:

• Geomembrane-lined (LLDPE) base and vertical side slopes
• Geocomposite drainage layer draining percolation to a collection sump above the LLDPE base
• Geosynthetic root barrier layer above Layer 1 (lower layer of cover system)
• Earthen surface run-off collection berm that diverts surface run-on and channels run-off to a
single collection point
• Separate PVC drainage pipes for percolation and surface run-off that drain to separate
measurement stations

Construction Quality Assurance and Quality Control Cover placement for the test section followed the Technical Specifications and CQA/QC Plan provided as Attachments A and B, respectively, to the White Mesa Reclamation Plan, Revision
5.1. Additional CQA/QC procedures were required for sampling and testing the cover soils within the performance monitoring section during construction. Sampling and testing required for the
lysimeter, in addition to requirements in the Technical Specifications, is provided in the next
section.

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Revegetation of the test section followed recommendations provided in the revegetation plan
(Appendix J). The revegetation plan includes information on seedbed preparation, soil
amendments, plant species, seeding rates, and quality assurance.
Cover Soil Sampling and Testing Testing of cover soil properties for the performance monitoring section will include measurement of index properties and organic matter. These tests will be conducted following test section
construction to verify that the cover soils in the performance monitoring section are representative of the as-built cover soils in other areas of the final cover system. EFRI is not proposing to test the soils throughout the operational period to determine changes in properties with time.
Monitoring the change in soil properties with time, such as that done for the NUREG/CR-7028 (Benson et al., 2011) is useful as a research endeavor to understand the evolution of the cover
system, but is unnecessary as a direct performance-based metric for the cover system.
Performance of the cover system will be evaluated by percolation from the cover as discussed in Section L.4.2. Additional discussion on testing is provided below.
Index Properties. Disturbed soil samples were collected during construction of the lysimeter with shovels and placed in 20-L buckets. These samples will be used for determination of particle size
analysis (ASTM D422), Atterberg limits (ASTM D4318), specific gravity of solids (ASTM D854),
and organic matter content (ASTM D422). The Unified Soil Classification will be assigned based on each set of index properties following the method in ASTM D2487.
Hydraulic Properties. Undisturbed samples were collected as 350-mm-diameter cylindrical
blocks following the method in ASTM D7015 and Benson et al. (1995) for hydraulic properties
testing (saturated hydraulic conductivity and soil water characteristic curve, SWCC). These samples will also be used for conformation of water content and dry unit weight. Sampling and testing frequencies for the undisturbed samples are summarized in Table 1. Saturated hydraulic
conductivity of each block sample will be measured using methods in ASTM D5084. The SWCC will be measured on the same sample using the methods in ASTM D6836, after the hydraulic
conductivity measurement.
Compaction. In situ tests were conducted with a nuclear densometer to measure the dry unit
weight of the soils placed in the lysimeter. Methods in ASTM D6938 were used for the nuclear
density tests.
Sampling Frequency. The sampling and testing frequencies for the disturbed and undisturbed
samples are summarized in Table L.2. Testing frequencies for the lysimeter soils are higher than for full-scale construction so that an adequate data set is available for evaluating the hydraulic
performance of the cover.

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Table L.2. Material Sampling and Testing Frequency for Lysimeter*
Soil
Attribute
Sampling
Method
Soil
Property
ASTM
Method
Sampling & Testing Frequency
Minimum Total Number
of Samples or Tests
Index Properties Disturbed
Particle size
distribution D422 2 per lift 18
Atterberg limits D4318 2 per lift 18
Specific gravity D851 2 per lift 18
Organic matter D2974 2 per lift 18
Particle size distribution D422 2 per lift 18
Hydraulic Properties Undisturbed
Saturated hydraulic conductivity D5084 One block per lift 9
Soil water
characteristic curve D6836 One block per lift 9
Compaction In Situ Dry unit weight D6938
2 per lift
(excluding erosion
protection layer)
16
*All samples will be collected within the lysimeter. L.4.2 Primary test Section Monitoring
Cover system performance will be assessed by monitoring the cover test section constructed
within Cell 2. The performance monitoring requirements follow NUREG/CR-7028 (Benson et al.,
2011) and incorporate site-specific recommendations from Dr. Craig H. Benson (personal communication). These recommendations have developed from more than 25 years of
experience, including 15 years of experience in monitoring systems for US EPA’s Alternative
Cover Assessment Program (ACAP) (Benson et al., 2001, Albright et al., 2004).
Monitoring System and Instrumentation
The monitoring system includes instruments to measure all components of the water balance for the cover system, including percolation from the base of the cover, runoff, interflow (internal lateral flow), and on-site meteorological conditions. The system will also measure state variables (water
content and temperature) at discrete locations within the cover. A complementary surveillance program will be performed according to the criteria presented in Appendix D to monitor the vegetative community, edaphic properties of the cover soils, and pedogenic evolution of the cover
profile, as suggested in NUREG/CR-7028. Comparisons will be made between the monitoring data and predictions and assumptions made during cover design.
Precision tipping buckets and pressure transducers mounted in drainage basins will be used to
provide redundant measurements of percolation, interflow, and surface runoff. The drainage basins are equipped with flouts to provide consistent repeatable basin flushing. Water content
reflectometers (WCR) employing time domain reflectometry will be used to measure water content
of the cover soils in the lysimeter. A Type-T thermocouple mounted on the head of each WCR will be used to monitor soil temperature. The co-located WCRs and thermocouples were installed
at the quarter points along the centerline of the test section as shown in the Drawings (Attachment L.1). Each nest consists of eight WCRs and thermocouples, as shown in the Drawings. All WCRs will be calibrated for the soils in the lysimeter and will include temperature
compensation following the methods in Benson and Wang (2006).

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A meteorological station located immediately outside of the lysimeter area will be used to monitor
climatic variables. Installing a dedicated meteorological station reduces the effort and
inconsistencies that can be associated with integrating data from a site-wide weather station. Collecting meteorological data adjacent to the lysimeter will also ensure that conditions at the
lysimeter are represented accurately. The meteorological station includes a shielded Geonor weighing precipitation gauge that monitors frozen and unfrozen precipitation, a Visalia shielded temperature and humidity probe to monitor air temperature and relative humidity, a Druck
barometric pressure sensor, a Visalia pyranometer to measure net solar radiation, and a RM Young wind sentry to measure wind speed and direction. All sensors were calibrated after installation and will be calibrated annually.
All measurement devices are connected to a single datalogger that can be accessed remotely.
The datalogger is programed to collect data from all sensors on hourly intervals. Downloads from
the datalogger will occur daily using an automated algorithm. The datalogger algorithm will monitor flows and meteorological variables continuously, and will reduce the sampling interval to
as short as 15 s if needed to ensure data with adequate frequency to capture flows reliably. In
most cases, data will be aggregated into daily quantities for reporting.
Vegetation sampling and monitoring procedures will follow recommendations outlined in Appendix D. Live plant cover, shrub density, and overall plant community health and sustainability are included in the monitoring.
Monitoring Time Period and Frequency EFRI will monitor the test section in two stages: (i) calibration monitoring and (ii) performance
monitoring. Calibration monitoring will be conducted for two full calendar years after construction is complete to confirm that the monitoring systems are functioning properly and the cover has equilibrated prior to entering the performance monitoring period. The first calendar year of
calibration monitoring will begin on January 1 after construction of the test section has been completed. Official performance monitoring of the cover test section will commence on January
1 after the two calendar years of calibration monitoring are complete. Performance monitoring
will be conducted for five years.
The monitoring frequency will vary depending on the parameters measured. All hydrological
sensors will be interrogated hourly, and aggregated into daily quantities for water balance
analysis. Vegetation properties will be measured annually. Soil properties will be tested during test section construction. In-service soil properties will be determined during the last year of the
monitoring period via sampling and testing in the buffer area of the test section outside the
lysimeter.
Performance Criteria
Percolation rate from the base of the lysimeter will be used as the performance parameter for the cover system. Data from secondary variables (i.e. meteorological conditions, water balance quantities, soil water content, soil temperature, in-service soil and vegetation properties, etc.)
related to the primary performance parameter will be used for interpretative purposes, as recommended in NUREG/CR-7028 (Benson et al., 2011). Although performance criteria are not suggested in NUREG/CR-7028 for these parameters and are not stipulated herein, monitoring of
these parameters is recommended so that the percolation data can be interpreted mechanistically.

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Performance of the test section will be assessed using the average annual percolation rate measured during the performance monitoring period. The objective of this assessment is to
determine if the hydrological modeling approach presented in the Infiltration and Contaminant
Transport Modeling (ICTM) report (MWH, 2010) and in updates to the modeling presented in EFRI (2015) provides a realistic prediction (or conservative over-prediction) of percolation. The cover
design will be considered to have performed adequately, without the need for any additional modeling, if the average annual percolation rate is 2.3 mm/yr or less. This is the average annual percolation rate estimated from the ICTM for Base Case soil conditions and average climate
conditions.
Meteorological data recorded during the monitoring period will be compared to the meteorological
data used as input in the hydrological modeling, which is based on a 100-yr record.
Particle size data collected from the test section will be used to determine whether the soil properties are characteristic of Base Case, Upper Bound, or Lower Bound conditions. This
evaluation will be specific to the test section, which will be constructed with a small volume of soil
relative to the full-scale cover. Because the full-scale cover will be constructed from large volumes of soil, the spatial average across the full-scale cover is most likely to resemble the Base Case.
Thus, the percolation rate from the test section may or may not represent the percolation rate for
full-scale conditions depending on whether the soils for the test section are representative of Base Case, Upper Bound, or Lower Bound conditions.
For each layer in the test section, the average and standard deviation of the gravel content, sand
content, and fines content will be computed from the data collected during construction, with the size fractions defined using ASTM D422. These statistics will be used to identify a particle size
band for each soil layer in the test section. These particle size bands for the test section will be compared to the particle size distributions associated with the Base Case, Upper Bound, and Lower Bound soils used in the hydrological modeling. Particle size distributions used in the
modeling will be identified that overlap, or are most closely aligned with the as-built particle size bands for the test section.
Percolation rates measured from the test section that are equal to or less than the percolation
rate of 2.3 mm/yr and within the precision of measurement, will confirm that the hydrological modeling approach provides a realistic prediction (or conservative over-prediction)
of percolation, and confirms that if the average cover over the entire cell uses base case soils, as
expected, the percolation rates will be as predicted.
The performance evaluation will be based on data collected during the performance monitoring
period. However, data collected during the calibration period will be compared with the data from
the performance monitoring period. If these two periods are not different statistically and no temporal trend in percolation rate is found, then the average percolation rate over the entire
seven-year monitoring period will also be compared to the appropriate percolation rate in the Table L.3.
The vegetation component of the Primary Test Section will be evaluated for applicable
acceptance criteria as presented in Appendix D. Vegetation monitoring will commence one year after seeding and continue for a minimum of five years after calibration monitoring of the cover test section is complete. The vegetation component will be considered successful if a minimum
vegetation cover of 40 percent and acceptable vegetation diversity per Appendix D (perennial grasses, forbs and shrubs) is met for the Primary Test Section by the end of the Performance

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Period. The revegetation acceptance goal of 40 percent cover assumes average annual precipitation during the Performance Period (based on long-term on-site averages) and an
accelerated rate of plant growth in this semi-arid environment that can take as long as 10 years
to achieve. If precipitation during the Performance Period is “Dry” or if it appears that more time is needed to satisfy the vegetation performance criteria a new acceptance goal would need to be
established. L.4.3 Supplemental Test Section
EFRI will construct a supplemental vegetation monitoring test section (Supplemental Test Section) concurrently with the Phase 1 cover placement. The Supplemental Test Section will be constructed at a location north of the tailings management cell, to be agreed to by EFRI and the
Director that will be representative of cover slope conditions on the tailings management system cells. The test section will be 100 ft by 100 ft in size to match the dimensions of the Primary Test
Section. Construction will occur in the fall of 2017 and consist of removal of existing vegetation
by physically scraping the site and amending the remaining topsoil with composted biosolids at the same rate applied to the Primary Test Section. Following the application of composted
biosolids, the site will be seeded and mulched. Placement of biosolids and seeding the test
section will follow recommendations provided in the revegetation plan (Appendix J) and the Technical Specifications. The test section slope will be greater than 1 percent. The cover design
includes addition of gravel to the topsoil for slopes greater than 0.5 percent. However, gravel will not be added to the topsoil for the test section to allow for evaluation of the short-term impact of erosion on the vegetative cover without gravel addition. The mulch will provide adequate erosion
protection for the seeds during germination and early seedling growth. Successful test section performance will then translate to both the cover with or without the addition of gravel for erosion protection.
The Supplemental Test Section will be evaluated for performance using the same procedures and for the same time period defined for the Primary Test Section in Section L.4.2.
L.4.4 Additional Monitoring
EFRI currently monitors settlement monuments on Cell 2. Monitoring of these monuments will
continue and the results reported after Phase 1 Cell 2 cover construction is complete. Existing settlement monuments will be extended upward during cover construction (see Figure L.1 for
existing settlement monument locations). Standpipe piezometers were installed across Cell 2
during Phase 1 Cell 2 cover construction to monitor water levels within the tailings (see Figure L.1 for piezometer locations). After Phase 1 cover construction is complete, it is recommended
that settlement monuments and piezometers be monitored weekly for the first month, biweekly for the second month, and monthly thereafter.
Settlement and dewatering data will be evaluated after the cover performance monitoring is
complete. The evaluation will determine if sufficient settlement has occurred to facilitate Phase 2 cover placement and minimize maintenance of the final cover surface. Decreasing trends in settlement followed by maximum of 0.1 feet (30 mm) of cumulative settlement over 12 months
(for at least 90 percent of the settlement monuments) will be considered acceptable to proceed with placement of the Phase 2 Cell 2 cover.
EFRI currently measures and reports radon emanation rates from the top surface of Cell 2. This monitoring and reporting will continue after construction of the Phase 1 cover system and test

Energy Fuels Resources (USA) Inc. MWH 15 December 2016
section. The average radon emanation rate over the entire surface of Cell 2 is required to be less than or equal to 20 pCi/m2-s.

Monitoring of Cell 2 will also occur after Cell 2 Phase 2 cover construction is complete and will include radon, settlement, and vegetation monitoring. Closure monitoring is discussed in more
detail in the main text of the Updated Tailings Cover Design Report. L.4.5 Reporting
Three types of reports will be prepared on data collected from the test section: monthly data quality analyses (DQA), quarterly data quality reports (DQRs), and a comprehensive annual report. In addition, the annual report will include a summary of settlement and standpipe
piezometer measurements and trends.
Data Quality Analyses (DQAs)
A comprehensive data quality analysis will be conducted monthly to ensure that all sensors are operating properly and that the data are reliable. DQAs consist of a graphical review of the output
from each sensor and a comparison of the data within expected bounds (e.g., does the volumetric
water content reported from each sensor fall within physical bounds – 0.0 to porosity?). DQAs are conducted primarily to identify problems in the monitoring system so that corrections can be
made before significant loss of data occurs. DQAs are maintained as internal reports as part of
internal data quality control and assurance.
Data Quality Reports (DQRs) Data quality reports (DQR) are issued quarterly to demonstrate that the monitoring system is functioning properly and the data being collected are reliable. Graphs are reported for each
sensor and comparisons are made with physical bounds as well as expected temporal trends. Meterological data are compared with data from the closest representative meteorological station operated by the National Weather Service (NWS) to ensure the meteorological data are
representative and reliable. Corrective actions are described if problems are found in the monitoring data or the monitoring system. A water balance summary is also provided. Vegetation
monitoring will be conducted on an annual basis and the results included in the annual report.
DQRs are submitted quarterly to DWMRC for review and discussion, if necessary.
Annual Reports
An annual report will be issued annually around the end of the first quarter of the subsequent year. This report will include a review of the water balance data, comparisonsof the data to other
data collected globally on the hydrology of earthen covers (e.g., data from Apinwantragoon et al. 2014), and a discussion of any problems and corrective actions that were undertaken. The annual report will also summarize settlement and standpipe piezometer monitoring, and include results
from annual vegetation monitoring for both test sections. Presenting the annual report to DWMRC by WebEx is recommended.

Energy Fuels Resources (USA) Inc. MWH 16 December 2016
L.5 REFERENCES
Albright, W., Benson, C., Gee, G., Roesler, A., Abichou, T., Apiwantragoon, P., Lyles, B., and
Rock, S., 2004. Field Water Balance of Landfill Final Covers. J. Environmental Quality,
33(6), 2317-2332.
Benson, C., Chamberlain, E., Erickson, A., and Wang, X., 1995. Assessing Frost Damage in
Compacted Clay Liners, Geotech. Testing J., 18(3), 324-333.
Benson, C., T. Abichou, X. Wang, G. Gee, and W. Albright, 1999. Test Section Installation Instructions – Alternative Cover Assessment Program, Environmental Geotechnics Report
99-3, Dept. of Civil & Environmental Engineering, University of Wisconsin-Madison.
Benson, C., Abichou, T., Albright, W., Gee, G., and Roesler, A., 2001. Field Evaluation of Alternative Earthen Final Covers, International J. Phytoremediation, 3(1), 1-21.
Benson, C.H. W.H. Albright, D.O. Fratta, J.M. Tinjum, E. Kucukkirca, S.H. Lee, J. Scalia, P.D. Schlicht, and X. Wang, 2011. Engineered Covers for Waste Containment: Changes in
Engineering Properties and Implications for Long-Term Performance Assessment.
NUREG/CR-7028, prepared for the U.S. Nuclear Regulatory Commission, Washington, D.C., December.
Benson, C. and Wang, X., 2006. Temperature-Compensating Calibration Procedure for Water
Content Reflectometers, Proceedings TDR 2006: 3rd International Symposium and Workshop on Time Domain Reflectometry for Innovative Soils Applications, Purdue
University, West Lafayette, IN, USA, 50-1 - 5-16.
Energy Fuels Resources (USA) Inc. (EFRI), 2015. Responses to Review of September 10, 2012 Energy Fuels Resources (USA) Inc. Responses to Round 1 Interrogatories on Revised
Infiltration and Contaminant Transport Modeling Report, White Mesa Mill Site, Blanding Utah, Report Dated March 2010. August 31.
MWH, 2010. Revised Infiltration and Contaminant Transport Modeling Report, White Mesa Mill
Site, Blanding, Utah. Prepared for Denison Mines (USA) Corporation. March.
Utah Department of Environmental Quality, Division of Radiation Control (DRC), 2013. Radioactive Material License (RML) Number UT 1900479: Review of September 10, 2012
Energy Fuels Resources (USA), Inc. Responses to Round 1 Interrogatories on Revised Infiltration and Contaminant Transport Modeling (ICTM) Report, White Mesa Mill Site,
Blanding, Utah, report dated March 2010. February 7.

CELL 3
CELL 2
CELL 1
CELL2-P01
CELL2-P10
CELL2-P11
APPROXIMATE EXTENT OF CELL 2
CELL2-P16
TAILINGS CELL 2 PIEZOMETER LOCATIONS FIGURE L.1
PIEZOMETERS
A
LEGEND:
WHITE MESA TAILINGS
CELL 2 PIEZOMETER INSTALLATION
BLANDING, UTAH
AUG 2016
x
ENERGY FUELS
W8
RANDOM
FILL
W9
RANDOM
FILL
W7
RANDOM FILL
W6
TOPSOIL
W5
RANDOM
FILL
W4
TOPSOIL
W2
RANDOM
FILL
W3
TOPSOIL
E1
TOPSOIL
E3
RANDOM
FILL
E6
RANDOM
FILL
W1
RANDOM
FILL
CELL 3
CELL 4A
CELL 1 (EVAPORATION)
CELL 4B
0.5
%
0.5
%
1.0%
MILL SITE
LEGEND
COVER MATERIAL BORROW
STOCKPILE LOCATIONS
FIGURE L.2
BORROW
A
WHITE MESA TAILINGS
CELL 2 RECLAMATION
BLANDING, UTAH
MAY 2016
x
ESTIMATED STOCKPILE VOLUMES
BORROW STOCKPILE ID ESTIMATED STOCKPILE
VOLUME (CY)
E1 15,900
E2 92,000
E3 16,800
E4 66,600
E5 68,800
E6 100,700
E7 74,900
E8 227,300
W1 85,700
W2 584,500
W3 84,800
W4 90,000
W5 2,001,160
W6 93,400
W7 39,500
W8 178,411
W9 60,250
APPROXIMATE LIMIT OF
FINAL COVER
ENERGY FUELS
ATTACHMENT L.1

WHITE MESA MILL TAILINGS CELL 2 RECLAMATION DRAWINGS
AUG 2016
TITLE SHEET AND PROJECT LOCATION MAP CELL 2 - 1
WMM COVER
A
VICINITY MAPLOCATION MAP
U T A H
ENERGY FUELS RESOURCES (USA) INC.
SAN JUAN COUNTY, UTAH
See Vicinity Map
SITE MAP
Cell 1
Cell 2
prepared for
WHITE MESA MILL TAILINGS CELL 2 RECLAMATION
Mill Site
White Mesa
WHITE MESA MILL TAILINGS CELL 2 RECLAMATION
BLANDING, UTAH
ENERGY FUELS
INDEX OF DRAWINGS
Sheet Number Sheet Title Rev
CELL 2 - 1 TITLE SHEET AND PROJECT LOCATION MAP A
CELL 2 - 2 PLAN VIEW CELL 2 FINAL COVER AND TEST SECTION A
CELL 2 - 3 PHASE 1 GRADING PLAN - TOP OF ADDITIONAL INTERIM FILL A
CELL 2 - 4 PHASE 1 GRADING PLAN - TOP OF COMPACTED COVER A
CELL 2 - 5 PHASE 1 GRADING PLAN - TOP OF GROWTH MEDIUM LAYER A
CELL 2 - 6 PHASE 2 GRADING PLAN - TOP OF GROWTH MEDIUM LAYER A
CELL 2 - 7 PHASE 2 GRADING PLAN - FINAL COVER SURFACE LAYOUT A
CELL 2 - 8 PHASE 2 - COVER EROSION PROTECTION PLAN A
CELL 2 - 9 COVER OVER CELL 2 CROSS SECTIONS (SHEET 1 OF 2)A
CELL 2 - 10 COVER OVER CELL 2 CROSS SECTIONS (SHEET 2 OF 2)A
CELL 2 - 11 RECLAMATION COVER DETAILS (SHEET 1 OF 2)A
CELL 2 - 12 RECLAMATION COVER DETAILS (SHEET 2 OF 2)A
CELL 2 - 13 TEST SECTION PLAN A
CELL 2 - 14 TEST SECTION CROSS SECTION A
CELL 2 - 15 TEST SECTION SUBGRADE GRADING PLAN A
CELL 2 - 16 TEST SECTION DETAILS (SHEET 1 OF 3)A
CELL 2 - 17 TEST SECTION DETAILS (SHEET 2 OF 3)A
CELL 2 - 18 TEST SECTION DETAILS (SHEET 3 OF 3)A
140440_6' X 12'
VAULT 6' X 12' VAULT (DRAWING BY OLDCASTLE PRECAST)
Cell 4B Cell 4A
Cell 3
AREA OF DRAWINGS
AUG 2016
PLAN VIEW CELL 2 FINAL COVER
AND TEST SECTION
CELL 2 - 2
WMM REC-1
A
LEGEND:
WHITE MESA MILL TAILINGS CELL 2 RECLAMATION
BLANDING, UTAHx
ENERGY FUELS
5605
CELL 2
CELL 3
MILL SITE
CELL 1
APPROXIMATE COVER PERFORMANCE
TEST SECTION LOCATION
(SEE SHEET CELL 2 - 13)
APPROXIMATE LIMIT OF CELL 2 FINAL COVER
RESTRICTED AREA BOUNDARY
WMM TRC-1 AUG 2016
LEGEND:
WHITE MESA MILL TAILINGS CELL 2 RECLAMATION
BLANDING, UTAHx
ENERGY FUELS PHASE 1 GRADING PLAN -
TOP OF ADDITIONAL INTERIM FILL
CELL 2 - 3 A
CELL 2
CELL 3
MILL SITE
CELL 1
APPROXIMATE LIMIT OF
ADDITIONAL INTERIM FILL
APPROXIMATE COVER PERFORMANCE
TEST SECTION LOCATION
(SEE SHEET CELL 2 - 13)
5605
RESTRICTED AREA BOUNDARY
HIGH POINT
GR
A
D
E

B
R
E
A
K
0.5
%
0.5
%
1.0%
WMM TRC-2 AUG 2016
LEGEND:
WHITE MESA MILL TAILINGS CELL 2 RECLAMATION
BLANDING, UTAHx
ENERGY FUELS PHASE 1 GRADING PLAN -
TOP OF COMPACTED COVER
CELL 2 - 4 A
CELL 2
CELL 3
MILL SITE
CELL 1
APPROXIMATE LIMIT OF
COMPACTED COVER
APPROXIMATE COVER PERFORMANCE
TEST SECTION LOCATION
(SEE SHEET CELL 2 - 13)
5605
RESTRICTED AREA BOUNDARY
HIGH POINT
GR
A
D
E

B
R
E
A
K
0.5
%
0.5
%1.0%
PH1 GROWTH MEDIUM AUG 2016
LEGEND:
WHITE MESA MILL TAILINGS CELL 2 RECLAMATION
BLANDING, UTAHx
ENERGY FUELS PHASE 1 GRADING PLAN -
TOP OF GROWTH MEDIUM LAYER
CELL 2 - 5 A
CELL 2
CELL 3
MILL SITE
CELL 1
APPROXIMATE LIMIT OF
PHASE 1 GROWTH MEDIUM LAYER
APPROXIMATE COVER PERFORMANCE
TEST SECTION LOCATION
(SEE SHEET CELL 2 - 13)
5605
RESTRICTED AREA BOUNDARY
HIGH POINT
GR
A
D
E

B
R
E
A
K
0.
5
%
0.5
%
1.0%
PH2 GROWTH MEDIUM AUG 2016
LEGEND:
WHITE MESA MILL TAILINGS CELL 2 RECLAMATION
BLANDING, UTAHx
ENERGY FUELS PHASE 2 GRADING PLAN -
TOP OF GROWTH MEDIUM LAYER
CELL 2 - 6 A
CELL 2
CELL 3
MILL SITE
CELL 1
APPROXIMATE LIMIT OF
PHASE 2 GROWTH MEDIUM LAYER
APPROXIMATE COVER PERFORMANCE
TEST SECTION LOCATION
(SEE SHEET CELL 2 - 13)
5605
0.5
%
0.5
%
1%
HIGH POINT
GR
A
D
E

B
R
E
A
K
RESTRICTED AREA BOUNDARY
WMM TRC-3 AUG 2016
LEGEND:
WHITE MESA MILL TAILINGS CELL 2 RECLAMATION
BLANDING, UTAHx
ENERGY FUELS PHASE 2 GRADING PLAN -
FINAL COVER SURFACE LAYOUT
CELL 2 - 7 A
CELL 2
CELL 3
MILL SITE
CELL 1
APPROXIMATE LIMIT OF CELL 2
FINAL COVER SURFACE
APPROXIMATE COVER PERFORMANCE
TEST SECTION LOCATION
(SEE SHEET CELL 2 - 13)
5605
0.5
%
0.5
%
HIGH POINT
1%
G
R
A
D
E
B
R
E
A
K
WMM TRC-4 AUG 2016
LEGEND:
WHITE MESA MILL TAILINGS CELL 2 RECLAMATION
BLANDING, UTAHx
ENERGY FUELS PHASE 2 - COVER EROSION
PROTECTION PLAN
CELL 2 - 8 A
CELL 2
CELL 3
MILL SITE
CELL 1
1
ROCK APRON
NON-ACCUMULATING SIDE
SLOPES: D50 = 1.7 INCHES (NO
FILTER LAYER REQUIRED)
1.0% SLOPES: TOPSOIL MIXED
WITH 25% 1-INCH MINUS
GRAVEL
0.5% SLOPES: TOPSOIL AND
VEGETATION
APPROXIMATE LIMIT OF CELL 2
FINAL COVER SURFACE
1
ROCK APRON
APPROXIMATE COVER PERFORMANCE
TEST SECTION LOCATION
(SEE SHEET CELL 2 - 13)
5605
EL
E
V
A
T
I
O
N
,

F
E
E
T
EL
E
V
A
T
I
O
N
,

F
E
E
T
DISTANCE, FEET
5580
5600
5620
5640
5570
5580
5600
5620
5640
2300 2400 2500 2600 2700 2800 2900 3000 3100 3200 3300 3400
-0.5%-0.5%
BOTTOM OF CELL FROM AS-BUILT DRAWINGS
FINAL COVER SURFACE
CELL 2 CELL 1CELL 3
EXISTING GROUND SURFACE (SEE REFERENCE)MAXIMUM PERMITTED TAILINGS
ELEVATION AT 5613.5'MAXIMUM PERMITTED TAILINGS ELEVATION AT 5615.0'
8
7
10.5' (MIN)
1515
0 100 200 300 400 500 600 700 800 900 1000 1100
PHASE 1 COVER
PHASE 2 COVER
EL
E
V
A
T
I
O
N
,

F
E
E
T
EL
E
V
A
T
I
O
N
,

F
E
E
T
DISTANCE, FEET
5580
5600
5620
5640
5570
5580
5600
5620
5640
2200 2300 2400 2500 2600 2700 2800 2900 3000 3100 3200 3300 3400 3500 3600
-0.5%-0.5%
BOTTOM OF CELL FROM AS-BUILT DRAWINGS
FINAL COVER SURFACE
CELL 2 CELL 1CELL 3
7
15
EXISTING GROUND SURFACE
(SEE REFERENCE)
MAXIMUM PERMITTED TAILINGS ELEVATION AT 5613.5'
MAXIMUM PERMITTED TAILINGS ELEVATION AT 5615.0'
8
10.5' (MIN)
15
0 100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400
PHASE 1 COVER
PHASE 2 COVER
WMM TRC-5 AUG 2016
WHITE MESA MILL TAILINGS CELL 2 RECLAMATION
BLANDING, UTAHx
ENERGY FUELS COVER OVER CELL 2 CROSS SECTIONS
(SHEET 1 OF 2)
CELL 2 - 9 A
A TAILINGS COVER
0
0
SCALE IN FEET
VERT
HORZ 50 100
10 20
B TAILINGS COVER
0
0 SCALE IN FEETVERT
HORZ 50 100
10 20
VERTICAL EXAGGERATION = 5X
VERTICAL EXAGGERATION = 5X
LEGEND:
EL
E
V
A
T
I
O
N
,

F
E
E
T
EL
E
V
A
T
I
O
N
,

F
E
E
T
DISTANCE, FEET
5600
5620
5640
5660
5580
5600
5620
5640
5660
0 100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400
BOTTOM OF CELL FROM AS-BUILT DRAWINGS
FINAL COVER SURFACE
CELL 2
15
EXISTING GROUND SURFACE
(SEE REFERENCE)
MAXIMUM PERMITTED TAILINGS ELEVATION AT 5613.5'
MAXIMUM PERMITTED TAILINGS ELEVATION AT ~5623'
(MAXIMUM PERMITTED TAILINGS ELEVATION ALONG
NORTH EDGE OF CELL 2 BETWEEN MILL SITE AND
CELL 1 RANGES FROM 5615'-5626')
CELL 3
7
9
10.5' (MIN)
10.5' (MIN)
1 5
-1%
PHASE 1 COVER
PHASE 2 COVER
WMM TRC-5 AUG 2016
WHITE MESA MILL TAILINGS CELL 2 RECLAMATION
BLANDING, UTAHx
ENERGY FUELS COVER OVER CELL 2 CROSS SECTIONS
(SHEET 2 OF 2)
CELL 2 - 10 A
C TAILINGS COVER
0
0
SCALE IN FEET
VERT
HORZ 50 100
10 20
VERTICAL EXAGGERATION = 5X
LEGEND:
4.5' MIN
1' MIN
0.5'
1% SLOPE
1
5 RIPRAP D50 = MIN. 1.7"
ELEVATION
COVER
10.5'
(MIN)
0.5'
3.5'
4'
2.5' (MIN)
LAYER 4 - EROSION PROTECTION LAYER
(TOPSOIL OR TOPSOIL-GRAVEL ADMIXTURE)
LAYER 3 - GROWTH MEDIUM
LAYER 1 - INTERIM FILL
LAYER 2 - COMPACTED COVER
TAILINGS
VEGETATION
0.5'
VARIES
1
5
1
3
EXISTING
BERM
RANDOM FILL
RIPRAP MIN. D50 = 1.7"
WMM TRC-9 AUG 2016
RECLAMATION COVER DETAILS (SHEET 1 OF 2)CELL 2 - 11 A
WHITE MESA MILL TAILINGS CELL 2 RECLAMATION
BLANDING, UTAH
ENERGY FUELS
1 ROCK APRON AT BASE OF CELL 2 TOE OUTSLOPES
2 COVER DETAIL FOR TOP SURFACE OF TAILINGS
11
3 COVER DETAIL FOR CELL 2 SIDE SLOPES
11
CELL 2
0 2 4
SCALE IN FEET
LEGEND:
PHASE 2 COVER2'
PHASE 1 COVER
1.5'
5' MINROCK APRON MIN. D50 = 3.4"
1
MAXIMUM PERMITTED TAILINGS
ELEVATION VARIES
5
1
CELL 2
1% SLOPE
TAILINGS
WMM TRC-10 AUG 2016
RECLAMATION COVER DETAILS (SHEET 2 OF 2)CELL 2 - 12 A
WHITE MESA MILL TAILINGS CELL 2 RECLAMATION
BLANDING, UTAH
ENERGY FUELS
LEGEND:
9 COVER DETAIL OVER BERM - NORTHEASTERN EDGE OF CELL 2
0 5 10
7 CELL 2 COVER TIE-IN DETAIL OVER BERM BETWEEN CELL 2 AND CELL 3
0 10 20
8 CELL 2 COVER TIE-IN DETAIL OVER BERM BETWEEN CELL 1 AND CELL 2
0 10 20
EXISTING GROUND
SURFACE
EXISTING GROUND
SURFACE
CELL 2CELL 3
BERM TAILINGS
TAILINGS
0.5%
CL
CELL 1CELL 2
CL
TAILINGS
MAXIMUM PERMITTED
TAILINGS ELEVATION AT 5615.0'
-0.5%
1
5
1
5
TEMPORARY SLOPE
(SEE NOTE 1)
TEMPORARY SLOPE
(SEE NOTE 1)
MINIMUM 10'
ROCK APRON
NOTE:
1.THE CELL 2 TEMPORARY SLOPES WILL BE IN PLACE PRIOR TO CONSTRUCTION OF CELL 1
AND CELL 3 FINAL COVERS. DURING FINAL CELL 1 AND CELL 3 COVER CONSTRUCTION,
THE EROSION PROTECTION LAYER ON THE CELL 2 TEMPORARY SLOPES WILL BE
REMOVED AND THE CELL 2 FINAL COVER SYSTEM WILL BE TIED INTO THE CELL 1 AND
CELL 3 FINAL COVER SYSTEMS.
INSIDE EDGE OF BERM
(CONFIRM PRIOR TO CONSTRUCTION)
MAXIMUM PERMITTED
TAILINGS ELEV AT 5613.5'INSIDE EDGE OF BERM
(CONFIRM PRIOR TO CONSTRUCTION)
BERM
PHASE 2 COVER
PHASE 1 COVER
PHASE 1 COVER
PHASE 2 COVER
PHASE 1 COVER
PHASE 2 COVER
AUG 2016
TEST SECTION PLAN CELL 2 - 13
TEST SECTION PLAN
A
LEGEND:
WHITE MESA MILL TAILINGS CELL 2 RECLAMATION
BLANDING, UTAHx
ENERGY FUELS
EDGE OF CELL 2 FINAL COVER
EDGE OF ACCESS ROAD
TEST SECTION BOUNDARY
(SEE NOTE 1)
LYSIMETER BOUNDARY
15'
APPROXIMATE VAULT
LOCATION (SEE NOTE 1)
FLOW PIPING
NOTE:
1.TEST SECTION AND VAULT LOCATIONS SHOWN ARE
APPROXIMATE. FINAL LOCATIONS WILL BE ESTABLISHED
IN THE FIELD.
5605
AUG 2016
TEST SECTION CROSS SECTION CELL 2 - 14
TEST SECTION PLAN
A
WHITE MESA MILL TAILINGS CELL 2 RECLAMATION
BLANDING, UTAHx
ENERGY FUELS
EXISTING GROUND SURFACE
(SEE REFERENCE)
LEGEND:
MAX PERMITTED TAILINGS
ELEVATION 5613.5'
AT THIS LOCATION
BOTTOM OF CELL FROM AS-BUILT DRAWINGS
AS-BUILT CREST ELEVATION 5615'
1 5 1 5
LYSIMETER
(SEE NOTE 2)15'
9.5'
PHASE 2 COVER
PHASE 1 COVER
8 TEST SECTION CROSS SECTION
0 15 30
INSIDE EDGE OF CELL 2 BERM
(CONFIRM LOCATION PRIOR TO CONSTRUCTION)
TEST SECTION
TEMPORARY SLOPE
(SEE NOTE 1)
NOTES:
1.THE CELL 2 TEMPORARY SLOPES WILL BE IN PLACE PRIOR TO CONSTRUCTION OF CELL 1
AND CELL 3 FINAL COVERS. DURING FINAL CELL 1 AND CELL 3 COVER CONSTRUCTION,
THE EROSION PROTECTION LAYER ON THE CELL 2 TEMPORARY SLOPES WILL BE
REMOVED AND THE CELL 2 FINAL COVER SYSTEM WILL BE TIED INTO THE CELL 1 AND
CELL 3 FINAL COVER SYSTEMS.
2.LYSIMETER THICKNESS IS 9.5' WHICH IS THE MINIMUM DESIGN THICKNESS FOR THE
RECLAMATION COVER ACROSS THE TAILINGS CELLS. (THE COVER DESIGN THICKNESS
FOR CELL 2, CELL 3, AND CELLS 4A/4B IS 10.5', 10', AND 9.5', RESPECTIVELY).
3.VAULT LOCATION SHOWN IS APPROXIMATE. FINAL LOCATION WILL BE ESTABLISHED IN
THE FIELD.
16
1
EXISTING GROUND SURFACE
(SEE REFERENCE)
LYSIMETER FORMWORK
EXTRUSION WELDED PIPE
BOOT THROUGH EXISTING
GEOMEMBRANE
LYSIMETER INSTRUMENTATION VAULT
(SEE DRAWING 140440_6'x12' VAULT)
LYSIMETER SUMP 16
6
17
14
TAILINGS
MAX PERMITTED TAILINGS
ELEVATION 5613.5'
AT THIS LOCATION
PIPE INVERT APPROX. ELEVATION 5613.4'
PIPE INVERT APPROX. ELEVATION 5612.8'
(SEE NOTE 3)
1% (MIN.)
PIPE SLOPE
TEST SECTION AND LYSIMETER SUBGRADE
EXTENT OF STRIPPING / IN PLACE COMPACTION
(SEE SHEET 2-15)
AUG 2016
TEST SECTION SUBGRADE GRADING PLAN CELL 2 - 15
TEST SECTION PLAN
A
LEGEND:
WHITE MESA MILL TAILINGS CELL 2 RECLAMATION
BLANDING, UTAHx
ENERGY FUELS
5605
TEST SECTION
BOUNDARY
LYSIMETER BOUNDARY
NOTE:
1.TOP OF INTERIM COVER GRADING POINTS
CORRESPOND TO EXTENTS OF STRIPPING / IN PLACE
COMPACTION TO BE PERFORMED AS PART OF TEST
SECTION CONSTRUCTION.
EXTENT OF STRIPPING / IN PLACE COMPACTION
AUG 2016
TEST SECTION DETAILS (SHEET 1 OF 3)CELL 2 - 16
TEST SECTION DETAILS
A
WHITE MESA MILL TAILINGS CELL 2 RECLAMATION
BLANDING, UTAH
ENERGY FUELS
100'
100'
20'
64'
1.
0
%

S
L
O
P
E
LYSIMETER
BOUNDARY
34'16'
PERCOLATION PIPE
(2" DIA. PVC)
32'
TEST SECTION BOUNDARY
1 TEST SECTION PLAN VIEW
0 10 20
2 LYSIMETER SUBGRADE PLAN VIEW
0 10 20
32'
64'
16'
1.
0
%

S
L
O
P
E
BERM CENTERLINE
SUMP DETAIL17
6,7
SURFACE RUNOFF PIPE
(2" DIA. PVC)
3 COVER PROFILE WITH SENSOR DEPTHS
0 2 4
0.5'
3.5'
4'
2'
WATER CONTENT REFLECTOMETER
AND THERMOCOUPLE SENSOR
LOCATION (TYP)
16'
SENSOR
NEST
LEGEND:16'
1'
.75'
.75'
1'
1'
1'
1'
1'
.67'
.67'
CENTERLINE OF SURFACE
RUNOFF DIVERSION BERM
16
4
16
5
4 TEST SECTION - LYSIMETER DOWN GRADIENT END
1.0%
SURFACE
RUNOFF PIPE
(2" DIA. PVC)
LATERAL FLOW PIPE
(2" DIA. PVC)
PERCOLATION PIPE
(2" DIA. PVC)
COVER
GEOSYNTHETIC ROOT BARRIER
GEOCOMPOSITE DRAIN
60 MIL LLDPE GEOMEMBRANE
(TEXTURED BOTH SIDES)
60 MIL LLDPE
GEOMEMBRANE
SURFACE RUNOFF
DIVERSION BERM17
11
5 TEST SECTION - LYSIMETER UP GRADIENT END
GEOSYNTHETIC ROOT BARRIER
GEOCOMPOSITE DRAIN
60 MIL LLDPE GEOMEMBRANE
(TEXTURED BOTH SIDES)
COVER
60 MIL LLDPE GEOMEMBRANE
SURFACE RUNOFF
DIVERSION BERM 17
10
2.5'
7'
1.0%
SUMP TEST PIPE 17
8,9
INTERIM COVER
1%
1%
1%
LYSIMETER
FORMWORK 18
13,14
SLOPE FLOOR SHAPED IN
FIELD TO FLOW TO SUMP
(SEE DETAIL 7)
SHAPE SUMP IN FIELD FOR DRAINAGE TO SUMP
LATERAL FLOW PIPE
(2" DIA. PVC)
NOT TO SCALE NOT TO SCALE
AUG 2016
TEST SECTION DETAILS (SHEET 2 OF 3)CELL 2 - 17
TEST SECTION DETAILS
A
WHITE MESA MILL TAILINGS CELL 2 RECLAMATION
BLANDING, UTAH
ENERGY FUELS
6 SCHEMATIC OF LYSIMETER SUMP
NOT TO SCALE
LLDPE BOOT FOR 2" DIA. SCH 40 PVC PIPE
EXTRUSION WELD BOOT TO GEOMEMBRANE
11 STRIP DRAIN AND COLLECTION PIPE FOR SURFACE RUNOFF
NOT TO SCALE
10 SURFACE RUNOFF DIVERSION BERM
NOT TO SCALE
1.5'
18" STRIP DRAIN POLYCAST
400 SERIES OR COMPARABLE
BENTONITE PLUG TO BE PLACED IN SAND BEDDING FOR PIPE
2" DIA. SCH 40 PVC PIPE
SLOPE > 1%
TOPSOIL
TOPSOIL1.5'
3' APPROX.
3' APPROX.
9 SUMP TEST PIPE DETAIL
NOT TO SCALE
1.5'
HEAT BOND FLAP AT END
PERFORATED END SECTION
38" (10mm) DIA HOLES,
2" MAXIMUM SPACING
GEOCOMPOSITE DRAIN WRAP
CABLE TIE
2" DIA. PVC, PERFORATED ON FLAT
GEOCOMPOSITE DRAIN
LLDPE GEOMEMBRANE
8 SUMP TEST PIPE RISER DETAIL
NOT TO SCALE
TO SUMP
2" DIA. SUMP TEST PIPE
LLDPE BOOT WITH 1'
SKIRT IN COMPACTED COVER
LLDPE BOOT WITH 1'
SKIRT IN GROWTH MEDIUM
BASE GEOMEMBRANE
GEOCOMPOSITE DRAIN
SIDEWALL GEOMEMBRANE
SLOPE TO SUMP GRADED IN FIELD
FOR FLOW TO OUTLET (SEE
DETAIL 7)
SUMP PERCOLATION PIPE
12" MIN
FLEX CONNECTOR WITH SS CLAMPS
PIPE CLAMPED TO BOOT WITH SS CLAMPS,
SEALED WITH SILICONE
7 DOWNSLOPE END OF LYSIMETER SUBGRADE SURFACE
NOT TO SCALE
PLAN VIEW
SUBGRADE SURFACE SHAPED IN
FIELD FOR FLOW TO OUTLET
END WALL
AUG 2016
TEST SECTION DETAILS (SHEET 3 OF 3)CELL 2 - 18
TEST SECTION DETAILS
A
WHITE MESA MILL TAILINGS CELL 2 RECLAMATION
BLANDING, UTAH
ENERGY FUELS
13 WELDING OF SIDE WALL GEOMEMBRANES FOR LYSIMETER
NOT TO SCALE12 INTERFLOW COLLECTION SUMP FOR LYSIMETER
NOT TO SCALE
COMPAC
T
E
D

C
O
V
E
R
INTERIM
C
O
V
E
R
END WALL GEOMEMBRANE
GEOCOMPOSITE
DRAINAGE LAYER
GEOMEMBRANE AT INTERFACE
AT ADDITIONAL 2% SLOPE
LATERAL FLOW PIPE
(2" DIA PVC)
14 LYSIMETER FORMWORK - FIRST STAGE OF LYSIMETER CONSTRUCTION
NOT TO SCALE
15 LYSIMETER FORMWORK - SECOND STAGE OF LYSIMETER CONSTRUCTION
NOT TO SCALE
DRYWALL SCREW @ 6' CENTERS,
TEMPORARY UNTIL SECOND STAGE OF LYSIMETER CONSTRUCTION
2X4 BRACE
FORMWORK SPIKE
2X4 SILL PLATE
FORMWORK SPIKE
SOLID FILLET
(HAND FIT)
GEOMEMBRANE
2X4 STUD
2X4 STUD
2X4 BRACE
FORMWORK SPIKE
12" BOLT WITH WASHERS
EXTRUSION WELD
GEOMEMBRANE
DRYWALL SCREW @ 6' CENTERS, TEMPORARY UNTIL NEAR
FINAL GRADE OF LYSIMETER CONSTRUCTION
COVER SOIL COVER SOIL
NOTE:
1.INSTALL SECOND STAGE OF FRAMEWORK WHEN COVER WITHIN
12" OF TOP OF FIRST STAGE OF LYSIMETER FRAMEWORK
2X4 TOP PLATE
INTERIM FILL INTERIM FILL
GEOMEMBRANE
2X4 TOP PLATE
BOOT
5'
6"
1.0% SLO
P
E
FIRST STAGE
CONSTRUCTION
2X4 SILL PLATE
ATTACHMENT L.2

COVER TEST SECTION INSTALLATION INSTRUCTIONS

Updated Tailings Cover Design Report
Energy Fuels Resources (USA) Inc. MWH 1 April 2016
1.0 INTRODUCTION
This document describes the installation procedures for the test section to be constructed to assess the performance of the White Mesa reclamation cover for the tailings cells. These procedures and the design of the cover performance monitoring section are adopted from the
installation instructions for the test sections used in the Alternative Cover Assessment Program (ACAP) (Benson et al., 1999). The procedures incorporate the performance monitoring
recommendations provided in NUREG/CR-7028 (Benson et al., 2011) and site-specific
recommendations provided by Dr. Craig H. Benson.
The test section is to be located in the southeast corner of Cell 2, as shown in the Drawings
(Attachment L.1). The test section will be 100 ft x 100 ft, with a 32 ft x 64 ft lysimeter centered within the test section. The longer side of the lysimeter will be oriented parallel to the cover
slope. Design dimensions for the lysimeter and test section are shown in the Drawings. The lysimeter will collect percolation from the base of the cover, surface runoff, and interflow from the textural interface between the interim fill (Layer 1) and compacted cover (Layer 2). Sensors
monitor hydrologic state variables (temperature and water content) within the cover. Percolation rate, lateral drainage, runoff, internal state conditions, and meteorological data are recorded
continuously using a datalogger located near the southern edge of the test section.
The following sections describe each of the major steps required to install the test section.
2.0 SUBGRADE PREPARATION AND FORMWORK INSTALLATION
The subgrade for the lysimeter should consist of well-compacted interim cover at least 6 inches thick with no particle protruding from the surface more than 0.5 inches. Ridges, depressions, equipment tracks, or other variations in the subgrade surface should not exceed 0.5 inches. If
such variations exist, they should be smoothed and subsequently compacted by hand to the satisfaction of the Resident Engineer (RE). The surface grade of the subgrade must be set so that all water in the lysimeter drains to the sump.
The entire surface should be proof-rolled with a smooth drum compactor to the satisfaction of the RE. Soft or otherwise inferior materials should be over-excavated and replaced with new
materials. The final surface of the subgrade must be approved by the RE before placement of overlying cover soils or geosynthetics.

Formwork will be used to retain the lysimeter side walls during construction (see Drawings). The formwork will be constructed in two stages, both 4 ft in height, from 0.50-in plywood (4 ft x 8
ft panels) stiffened with 2x4 lumber around the perimeter. The second stage of formwork will be
installed when the cover is within 12 in of the top of the first stage of the lysimeter construction.
A 2x4 stiffener will be installed vertically at the center of each panel. The 2x4 stiffeners will be attached to the formwork for each stage using 2-inch deck screws on 6-inch centers. The formwork will be anchored to the subgrade using at least two formwork stakes extending at least
1.5 ft through 0.6-in holes drilled in the bottom 2x4 stiffeners at the quarter points. Braces
comprised of 2x4 lumber will be placed on 8-ft centers and anchored with formwork stakes for each stage. Formwork panels will be joined together at each end with 3-inch deck screws that
fasten adjacent 2x4 stiffeners. The upper and lower panels will be bolted together as shown in the Drawings.

Updated Tailings Cover Design Report
Energy Fuels Resources (USA) Inc. MWH 2 April 2016
Sixteen formwork panels are required for each side wall and eight formwork panels are required for each end wall to create a lysimeter 64 ft long and 32 feet wide. The 4 ft x 8 ft panels will be
used to create 8 ft of the 9.5-ft-high side walls and end walls. The upper 1.5 ft of the lysimeter
will be constructed without formwork. The lower end wall and both side walls will be installed at the start of construction and before soil placement begins. The upper end wall will be installed
after the soil and geosynthetic layers have been placed in the lysimeter. All walls are to be installed vertically (end walls are not perpendicular to the slope). 3.0 LYSIMETER SUMP
3.1 Sump Drainage Pipe
The sump at the base of the lysimeter (see Drawings) will be drained by 2-inch Schedule 40
polyvinyl chloride (PVC) pipe. The pipe will be installed in a narrow trench in the subgrade and extend from the lowest point in the sump to the collection basin. The pipe will be bedded in
clean dense sand at least 3-inches thick beneath the pipe and 6-inches thick above the pipe.
The sand is to be compacted with a vibratory plate compactor before placing the pipe and after the pipe trench is backfilled. The pipe slope must be maintained at least 1 percent away from
the sump. All PVC pipe joints are to be solvent welded following instructions provided by the
pipe manufacturer. The upper surface of the pipe riser will be temporarily sealed with duct tape or other material to prevent entry of soil or other materials during construction.
3.2 Sump The sump boot is to be installed on a section of 2-inch Schedule 40 PVC pipe as illustrated
by the detail in Figure 1 and shown in the Drawings. Liberally smear silicone caulk (GE Silicon II or equivalent) between the boot and the pipe, and then clamp the boot to the pipe using stainless steel hose clamps. Fill the groove on the surface between the riser pipe and boot with
caulk. Remove any excess caulk from the surface of the boot and allow the caulk to cure for at least 120 minutes.
A flexible rubber coupling will be used to join the 2-inch Schedule 40 PVC pipe in the trench to the 2-inch Schedule 40 PVC riser that will emanate from the subgrade (see Drawings and Figure 1). This coupling will provide flexibility within the boot as the lysimeter is constructed.
Adjust the elevation of the riser pipe so that the geomembrane rests flush against the subgrade, and tighten the stainless steel clamps on the pipe coupler with wrenches. A
gap of approximately 0.75 inches will exist between the pipe ends within the coupler to
ensure sufficient flexibility in the sump coupling.
Backfill any open area surrounding the riser pipe with subgrade soil and form a firm surface for
the geomembrane. Place a small section of geosynthetic clay liner (GCL) on the subgrade and over the pipe before installing the sump and add a thin fillet of granular bentonite (CETCO CG-
50 or equivalent) around the perimeter of the pipe. Check the surface grade of the subgrade to ensure all water will flow into the sump. A completed sump installation is shown in Figure 2.

4.0 DEPLOY GEOMEMBRANE
Linear low density polyethylene (LLDPE) geomembrane textured on both sides will be used to line the lysimeter. The geomembrane will be at least 1.5 mm (60 mil) thick. High-density
polyethylene (HDPE), polypropylene, or PVC geomembrane will not be used. The
geomembrane used for the base of the lysimeter will also be used for the end walls and the side walls. To ensure sufficient geomembrane for the end walls, cut the geomembrane at least 12 ft

Updated Tailings Cover Design Report
Energy Fuels Resources (USA) Inc. MWH 3 April 2016
(or more, as needed) longer than needed to cover the length of the base of the lysimeter (Figure 3) for the first stage construction. For the second stage of construction, the upper section of
geomembrane will be welded to the lower geomembrane as shown in the Drawings.
Weld geomembranes panels in accordance with the manufacturer’s recommendations using
a dual-track hot-wedge or extrusion welding technique. Check the welds for leaks using air pressure per ASTM D 5820 (ASTM, 2011b) or a vacuum box. Inspect the entire area of the geomembrane for defects. Repair any leaks or defects in accordance with the
manufacturer’s recommendations and to the satisfaction of the RE. The RE, along with the geosynthetic installer, can adjust these procedures as needed.
After the geomembrane has been placed, locate the sump and carefully cut a hole (<6 in) in the geomembrane so the sump is visible. Extrusion-weld the boot to the geomembrane
(Figure 4) and check the weld using a vacuum box per ASTM D 5641 (ASTM, 2011a) or a
spark test per ASTM D 6365 (ASTM, 2011c). Identify and repair any leaks identified until the criteria in ASTM D 5641 (ASTM, 2011a) are met and to the satisfaction of the RE.
Cover the pipe opening in the sump with a non-woven geotextile to prevent entry of debris.
Extend the geomembrane up and over the edge of the formwork extending around the
periphery of the lysimeter. Secure the geomembrane to the upper edge of the formwork using
deck screws installed 6 inches on center. Use a small block of 2x4 lumber or similar material to provide stress distribution between the screw head and the geomembrane. The geomembrane
will be held in place temporarily at the top of the formwork for both stages shown in the Drawings. Weld the panels of the geomembrane near the corners of the formwork as shown in Figure 5 and the Drawings.

5.0 DEPLOY GEOCOMPOSITE DRAIN
Geocomposite drainage layer (GDL) will be used for collecting percolation from the cover soils
and directing the percolation to the sump. The geocomposite drainage layer should have non-woven polypropylene or polyethylene geotextiles on both sides that are heat-bonded to a polyethylene geonet in the interior. The geotextiles should have a mass per unit area of at
least 16 oz/yd2.
A rubsheet consisting of 4 mil smooth polyethylene will be used to facilitate installation of the
geocomposite drain. Unroll the rubsheet adjacent to the side wall on one side of the lysimeter.
Lightly anchor the rubsheet with soil, sand bags, or other materials along the periphery. Move a roll of GDL to the top of the lysimeter by hand or using a loader equipped with a gantry bar or
similar equipment, and unroll the GDL onto the rubsheet. Adjust the position of the GDL to
conform to the base of the lysimeter, and then retrieve the rubsheet. Deploy another panel of GDL along the side wall using the same technique and then complete the installation with a
panel deployed along the centerline of the lysimeter. Join the panels following the manufacturer’s recommendations and heat bond the flaps along the edge to prevent debris from entering the GDL. Figure 6 shows an example of a fully deployed GDL.
Installation of the geomembrane and GDL must be completed within one day. By the end of this day, the sump area should surcharged with a load of soil (approximately 1 cy) placed
directly on top of the GDL in the sump area. This surcharge ensures that the sump remains in firm contact with subgrade while other construction activities are taking place. This
surcharge must be placed before the end of the work day, as cooling of the

Updated Tailings Cover Design Report
Energy Fuels Resources (USA) Inc. MWH 4 April 2016
geomembrane overnight can impose stresses in the sump area sufficient to catastrophically damage the sump.
6.0 PLACEMENT OF INTERIM COVER SOIL AND ROOT BARRIER
6.1 Interim Cover Soil
The interim cover soil (Layer 1) will be the first soil layer placed on top of the GDL. The interim cover soil should be deployed as a working platform so that the construction equipment does not contact the geosynthetics or displace the geosynthetics. The interim cover soil will be
2.5 ft thick and placed using methods expected for full-scale construction (except low pressure equipment should be used). Extreme caution must be used when placing the interim cover so that large particles do not damage the lysimeter geosynthetics. Any particles
larger than 3 inches should be removed from the lower layer of interim cover prior to construction traffic on the interim cover.

Compact soil on both sides of the side wall geomembrane with a motorized hand tamper (jumping jack) to ensure a tight interface between the soil and geomembrane. Compact
the remaining interim cover soil using low ground pressure equipment to the conditions
stipulated per the Technical Specifications. After compaction, place a fillet of granular bentonite (1 lb/ft of CETCO CG-50 or equivalent) around the periphery of the interior of the
lysimeter to promote sealing between the side wall geomembrane and interim cover soil.
Soil placement will occur through the upper end of the lysimeter and will extend at least
10 ft upslope from the upper end wall when the first stage of the lysimeter is constructed. Before placing the soil, 0.75-inch plywood panels should be placed over the geomembrane extending upward from the end of the lysimeter (Figure 7). This section of geomembrane
will be folded up to create the upper end wall after the soil and geosynthetic layers have been placed in the lysimeter. The plywood panels will protect the geomembrane for the end wall from damage due to construction traffic.

6.2 Root Barrier Layer
Place the root barrier layer (Reemay Biobarrier or equivalent) directly on top of the interim cover following the manufacturer’s instructions. Ensure that the polyethylene nodules are
oriented upward and that contact does not exist between the root barrier and the GDL or
bottom geomembrane in the lysimeter.
7.0 PLACEMENT OF FINAL COVER SOILS AND COVER GEOSYNTHETICS
Place the final cover soils following methods described in the Technical Specifications (Attachment A to Reclamation Plan, Revision 5.1) both inside and outside the lysimeter in
the areas shown in the Drawings. The thickness of each lift should be verified using
surveys of the bottom and top of each lift and should meet the criteria in the Technical Specifications.

Place cover soils around the inside and outside edges of the lysimeter directly adjacent to the side wall geomembrane. Compact soil on both sides of the side wall with a motorized
hand tamper (jumping jack) to ensure a tight interface between the soil and geomembrane. After compaction, place a fillet of granular bentonite (1 lb/ft of CETCO CG-50 or equivalent) around the periphery of the interior of the lysimeter to promote sealing
between the side wall geomembrane and cover soil.

Updated Tailings Cover Design Report
Energy Fuels Resources (USA) Inc. MWH 5 April 2016
Grade the upper surface of the uppermost layer of cover soil so surface water will flow to the surface runoff sump located at along the centerline of the test section and above the
percolation sump (see Section 9).
8.0 INTERFLOW COLLECTION
Interflow is to be collected at the contact between the interim fill (Layer 1) and compacted cover (Layer 2). Liquid is to be collected along the lower end wall of the lysimeter using a sump and routed to a collection basin. Schematics of the sump to be used are shown in the
Drawings. The interflow sump is to be located at the centerline of the lower end wall. Sump is to be placed with a 2 percent increase in slope within 2 ft of the end wall to promote flow to the slump. The cross-slope along the end wall should be at 1 percent towards the
sump.
A 2-ft long capture strip of GDL will extend across the breadth of the lower end wall and
will be buried 2 inches below the surface of the interim cover layer adjacent to the end wall as shown in the Drawings. The depth of embedment of the GDL in the interim cover will
taper to zero at the upslope end of the GDL capture strip. A 6-inch tall strip of GDL will
also to be placed in direct contact with the end wall extending from the GDL buried in the interim cover and into the compacted cover layer. The GDL strip placed in direct contact
with the end wall will capture flow at the interface of the layers at the end wall. The buried GDL strip and the GDL strip in contact with the end wall can also be installed as one contiguous material along with a sharp bend at the end wall.
Drainage will occur through a 2-inch Schedule 40 PVC pipe using a boot as shown in the Drawings. Field fitting of the sump details may be required and is acceptable. Any field fit
must be approved by the RE.
9.0 SURFACE RUNOFF COLLECTION
9.1 Diversion Berms Construct berms for surface runoff collection having the geometry shown in Drawings along the periphery of the lysimeter. Compact the berm with a hand tamper and/or with
construction equipment until the soil is firm. Slope the interior swale along the bottom berm towards the center of the lysimeter to ensure surface water flows to the collection point
near the centerline of the test section.
9.2 Collection Point Surface runoff will be collected in an 18-inch strip drain located along the centerline of the test
section and adjacent to the bottom diversion berm as shown in the Drawings. A 2-inch
Schedule 40 PVC pipe will be used direct flow from the strip drain to the collection basins. Adapters may be needed between the strip drain and the PVC pipe, as indicated in the
manufacturer’s instructions. Bed the PVC pipe in sand and use a plug of bentonite to ensure
that surface runoff cannot seep into the pipe trench.
Grade the interior berm to ensure water drains into the strip drain. Cover the entry grate of
the strip drain with a strip of non-woven geotextile sourced from the roll of GDL. Anchor the GDL strip with spikes or rip rap cobbles.

Updated Tailings Cover Design Report
Energy Fuels Resources (USA) Inc. MWH 6 April 2016
10.0 FLOW COLLECTION AND METERING SYSTEM
10.1 Collection Basin Vault
Collection basins for surface runoff, interflow, and percolation are to be installed in a
concrete vault located downslope of the lysimeter as shown in the Drawings. The location should be field fit to ensure that all drainage pipes emanating from the lysimeter maintain a
slope of at least 1 percent. The slope on the percolation pipe should control the location and elevation of the base of the vault. Install vault following the manufacturer’s instructions. Ensure vault is covered with at least 1.5 ft of soil at the shallowest location (up to 3 ft is
acceptable at the shallowest location). 10.2 Collection Basins and Piping
Install three collection basins each with a flout (Orenco Model PBF-C) to collect and meter flow from the surface runoff, interflow, and percolation pipes. Install the basins following
the manufacturer’s instructions. In each basin, install a pressure transducer (Campbell
Scientific CS450-L60), float switch (Orenco FS-48), and tipping bucket (Hydrological Services America TB1L or TB1L/70) as described in Benson et al. (1999, 2001).

Route piping for runoff, interflow, and percolation through knock-outs near the surface of vault and field fit piping to reach each collection basin. After installation, seal each pipe
and knock-out with polyurethane foam.
Route effluent pipes from the basins through knockouts at the base of the vault. Bury the
drainage pipes in vertical French drains at least 2 ft x 2 ft in surface area and 4 ft deep that are backfilled with coarse rock. Cover the surface of the coarse rock with a section of GDL after installation of the piping to prevent ingress of fines from overlying materials.
Seal the pipe and knock-out with polyurethane foam. Install a floor drain with a trap that flows to a French drain beneath the vault. Seal the annulus in the floor drain with polyurethane foam.
Calibrate each basin by measuring the volume of water required to initiate discharge by the flout. Mark the elevation at which discharge begins. Repeat this procedure two more times
to check the calibration. If the calibration or flush elevation deviates significantly, find the source of the problem, correct it, and re-calibrate the dosing siphon. Calibrate the tipping
bucket and the pressure transducer following the manufacturer’s instructions and Benson et al.
(1999).
11.0 SOIL AND METEOROLOGICAL SENSORS
11.1 Soil State Variables Water content reflectometers (WCRs, Campbell Scientific CS616) and thermocouples
(TCs, Omega Type T) are to be installed in two nests located at the quarter points along the centerline of the test section as shown in the Drawings. A WCR and TC are to be placed at each of the depths shown and should be installed immediately after the lift corresponding
to the sensor elevation has been placed. Press the WCR horizontally (or at the angle of the slope) into the cover soil by hand following the manufacturer’s instructions. Tape the end of the TC to the head of the WCR using duct tape. Route the sensor cables in 1-inch PVC
conduit along the surface of the most recent lift to a vertical riser for all sensor cables (Figure 8).

Updated Tailings Cover Design Report
Energy Fuels Resources (USA) Inc. MWH 7 April 2016
11.2 Weather Station Install the weather station tripod and grounding rod for the weather station following the
manufacturer's instructions adjacent to the test section. Bolt the data acquisition cabinets to
the tripod and install the pyranometer, temperature and humidity sensor, and wind sentry on the tripod following the manufacturer's recommendations. Wire all sensors, including those
installed in the test section, following the manufacturer’s instructions. Install the precipitation gage (Geonor T-200B) following the manufacturer’s instructions. Install cabling in conduit between the weather station, precipitation gage, and sensors. Seal all open ends
of conduit with polyurethane foam. 12.0 VEGETATION
Prepare and seed the surface of the test section following the procedure adopted for reclamation at White Mesa and outlined in Appendix D of the Updated Tailings Cover Design
Report. Employ the same procedures that will be used for the remainder of the cover. If
the surface layer is disturbed during seeding, use care to avoid damaging any of the sensors or cables near the surface.
13.0 REFERENCES
ASTM International, 2011a. ASTM D5641-94, Standard Practice for Geomembrane Seam
Evaluation by Vacuum Chamber.
ASTM International, 2011b. ASTM D5820-95, Standard Practice for Pressurized Air channel
Evaluation of Dual Seamed Geomembranes. ASTM International, 2011c. ASTM D6365-99, Standard Practice for the Nondestructive Testing
of Geomembrane Seams using the Spark Test. Benson, C., Abichou, T., Albright, W., Gee, G., and Roesler, A. (2001), Field Evaluation of Alternative Earthen Final Covers, International J. Phytoremediation, 3(1), 1-21.

Benson, C., Abichou, T., Wang, X., Gee, G., and Albright, W. (1999), Test Section Installation
Instructions – Alternative Cover Assessment Program, Geotechnics Report 99-3,
Geological Engineering, University of Wisconsin-Madison.

FIGURES

Cell 2 Reclamation Cover Design, Implementation, and Performance Assessment Plan

Figure 1. Rubber coupling used to ensure flexibility of boot for sump
(Photo courtesy of Dr. Craig H. Benson)

Cell 2 Reclamation Cover Design, Implementation, and Performance Assessment Plan

Figure 2. Sump installed on subgrade with duct tape sealing pipe opening and panel of GCL directly beneath sump.
(Photo courtesy of Dr. Craig H. Benson)
GCLL
panel
Sump
Duct tape over pipe

Cell 2 Reclamation Cover Design, Implementation, and Performance Assessment Plan

Figure 3. Geomembrane extending over downslope end wall (upper) and deployed out the
upslope end of lysimeter for upper end wall (lower).
(Photos courtesy of Dr. Craig H. Benson)

Geomembrane over
downslope end wall
Geomembrane extension for upslope end wall

Cell 2 Reclamation Cover Design, Implementation, and Performance Assessment Plan

Figure 4. Welding geomembrane on base of lysimeter to percolation sump (upper left), completed weld and visible pipe for percolation (upper right), and non-woven
geotextile secured over sump to prevent entry of debris into pipe (bottom).
(Photos courtesy of Dr. Craig H. Benson)

Cell 2 Reclamation Cover Design, Implementation, and Performance Assessment Plan

Figure 5. Example of folding of geomembrane sheet for corner welds.
(Photo courtesy of Dr. Craig H. Benson)

Cell 2 Reclamation Cover Design, Implementation, and Performance Assessment Plan

Figure 6. GDL being deployed on geomembrane (upper) and GDL fully deployed with
heat- bonded overlap (lower).
(Photos courtesy of Dr. Craig H. Benson)
Heat-bonded overlap
between GDL panels

Cell 2 Reclamation Cover Design, Implementation, and Performance Assessment Plan

Figure 7. Plywood deployed over geomembrane at upper end of test section to prevent
damage from equipment traffic.
(Photo courtesy of Dr. Craig H. Benson)
Plywood over
geomembrane for
upslope end wall

Cell 2 Reclamation Cover Design, Implementation, and Performance Assessment Plan

Figure 8. PVC conduit for sensor cables from specific elevation (upper) and vertical riser
for all cables (lower).
(Photos courtesy of Dr. Craig H. Benson)

PVC conduit for cables
at specific elevation
PVC riser

Energy Fuels Resources
(USA) Inc.
WHITE MESA MILL
Preliminary Mill
Decommissioning Plan

August 2016

3665 JFK Parkway
Suite 206 Fort Collins, CO USA
Preliminary Mill Decommissioning Plan

Energy Fuels Resources (USA) Inc. MWH i August 2016
TABLE OF CONTENTS
1.0 SPECIAL PROVISIONS .................................................................................................. 1
1.1 Scope of Document ............................................................................................. 1
1.2 Definitions ............................................................................................................ 1 1.3 Decommissioning Goals and Implementation Strategy ........................................ 1
1.4 Scope of Work ..................................................................................................... 2
2.0 GENERAL REQUIREMENTS AND PROCEDURES ....................................................... 3
2.1 General ................................................................................................................ 3
2.2 Applicable Regulations and Standards ................................................................. 3 2.3 Health and Safety Requirements ......................................................................... 3 2.4 Environmental Requirements ............................................................................... 3
2.4.1 Contractor Activities ................................................................................. 3 2.4.2 Environmental Monitoring ......................................................................... 4
2.5 Medical Emergency Procedures .......................................................................... 5
2.5.1 Level One Priority ..................................................................................... 5 2.5.2 Level Two Priority ..................................................................................... 5
2.6 Water and Contaminant Management .................................................................. 5
2.6.1 Runon/Runoff Control ............................................................................... 5 2.6.2 Residue Management .............................................................................. 6
2.6.3 Contamination Control .............................................................................. 7
2.6.4 Dust Control ............................................................................................. 7 2.6.5 Historical and Archaeological Considerations ........................................... 7
3.0 SITE REQUIREMENTS AND PROCEDURES ................................................................ 8
3.1 General ................................................................................................................ 8 3.2 Site Location ........................................................................................................ 8
3.3 Climate and Soil Conditions ................................................................................. 8 3.4 Site Layout and Facilities ..................................................................................... 8 3.4.1 Operation History ..................................................................................... 8
3.4.2 Access and Security ................................................................................. 9 3.4.3 Utilities ..................................................................................................... 9 3.4.4 Sanitation Facilities .................................................................................. 9
3.4.5 Fire Protection .......................................................................................... 9 3.5 Personnel Protection Requirements ..................................................................... 9
3.6 Occupational Monitoring Requirements ............................................................. 10 3.7 Operational Issues ............................................................................................. 10
3.8 Training .............................................................................................................. 10
4.0 EQUIPMENT SALVAGE ............................................................................................... 12
4.1 General .............................................................................................................. 12 4.2 Decontamination ................................................................................................ 12
4.3 Decontamination Procedures ............................................................................. 12 4.4 Decontamination Areas ...................................................................................... 13
5.0 PRE-DEMOLITION ACTIVITIES ................................................................................... 14
5.1 General .............................................................................................................. 14 5.2 Area Evaluation Process .................................................................................... 14
5.3 General Preparation Work ................................................................................. 15
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5.3.1 Circuit Cleanup ....................................................................................... 15 5.3.2 Laboratory Reagents .............................................................................. 15
5.3.3 Oils and Lubricants ................................................................................. 15
5.3.4 Asbestos ................................................................................................ 15 5.4 Process Area Preparation .................................................................................. 15
5.5 Staging and Storage Areas ................................................................................ 16
6.0 PROCESS AREA DEMOLITION ................................................................................... 17
6.1 General Description ........................................................................................... 17
6.2 Mill Area ............................................................................................................. 17 6.3 Demolition Strategy ............................................................................................ 18 6.3.1 Staging of Decommissioning .................................................................. 18
6.3.2 Remote Demolition ................................................................................. 18 6.3.3 Demolition Equipment ............................................................................ 18
6.4 Utilities Management ......................................................................................... 19
6.4.1 Liquefied Natural Gas and Propane Systems Disconnect ....................... 19 6.4.2 Electrical System Disconnect ................................................................. 20
6.4.3 Water System Disconnect ...................................................................... 20
6.4.4 Phone System ........................................................................................ 20 6.5 Surface Structure Removal ................................................................................ 20
6.6 Concrete Removal ............................................................................................. 20
6.7 Utility Removal ................................................................................................... 21 6.8 Miscellaneous Site-Wide Facilities ..................................................................... 21
6.9 Contaminated Soils ............................................................................................ 21 6.10 Windblown Contamination ................................................................................. 22 6.11 Preparation of Demolition Debris for Disposal .................................................... 22
7.0 REGRADING AND REVEGETATION ........................................................................... 23
7.1 Regrading .......................................................................................................... 23 7.2 Revegetation ...................................................................................................... 23
8.0 REFERENCES .............................................................................................................. 24

LIST OF FIGURES
Figure 1 Regional Location Map
Figure 2 Site Map of Mill Area

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1.0 SPECIAL PROVISIONS
1.1 Scope of Document
This document outlines the preliminary plans for decommissioning the Energy Fuels Resources
(USA) Inc. (EFRI) White Mesa Uranium Mill (Mill) site near Blanding, Utah. These plans are consistent with the previous decommissioning information provided in the 2011 Reclamation
Plan, Revision 5.0 (Denison, 2011) with a few revisions. This report has been updated to incorporate information provided in EFRI response to interrogatories and review comments from Utah Department of Environmental Quality (UDEQ), Division of Waste Management and
Radiation Control (DWMRC) on Reclamation Plan, Revision 5.0 (Denison, 2012; EFRI, 2012; EFRI, 2015). EFRI (2015b). This plan has been prepared by MWH Americas, Inc. (MWH) for EFRI for review and approval by the DWMRC. A final decommissioning plan will be submitted
to the Utah DRC for approval within twelve months prior to commencement of decommissioning activities.
1.2 Definitions
Sections referred to in this document are specific sections of the Preliminary Mill Decommissioning Plan, referred to as the Plan. The Drawings referred to in this document are
drawings provided in Attachment A to the Reclamation Plan, Revision 5.1 that form a necessary
component of this Plan.
For this Plan, EFRI is referred to as the Owner, with overall responsibility for site reclamation
and decommissioning. For consistency, EFRI is used throughout this document.
The Contractor is defined as the group (or groups) selected by EFRI and responsible for conducting the work tasks outlined in Section 1.4 under the direction of and under contract with
EFRI.
The Reclamation Project manager is defined as the person appointed by EFRI responsible for ensuring that preparatory work, demolition, material placement, and reclamation site activities,
are conducted according to this Plan.
The Radiation Safety Officer (RSO) is defined as the person appointed by EFRI responsible for worker safety and personnel monitoring. The RSO will be responsible for personnel safety
training, personnel monitoring, and documentation. These tasks will be conducted in accordance with the EFRI Radiation Protection Manual for Reclamation Activities (EFRI,
2015b).
1.3 Decommissioning Goals and Implementation Strategy
The project goals for mill decommissioning are outlined below.
1. Attain an as low as reasonably achievable (ALARA) dose outcome for:
a. workers doing the decommissioning, b. other on-site personnel, and
c. off-site individuals.
2. Optimize the effectiveness of the mill decommissioning plan.
3. Complete decommissioning as soon as practical.
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The implementation strategy to achieve the goals for mill decommissioning is listed below.
1. Utilize commercially available demolition equipment to minimize exposures by: (i)
minimizing time of demolition and (ii) keeping personnel from close proximity to
actual demolition activities.
2. Plan the components and establish a work system for these components.
3. Train the work force.
4. Follow the work plan.
5. Evaluate the work plan through project oversight and quality assurance.
6. Modify and continuously improve the work plan.
1.4 Scope of Work
The work outlined in this Plan consists of execution of the following major tasks associated with
facility decommissioning.
1. Setup of health and safety procedures for safety equipment, personnel protective
equipment, personnel monitoring, and personnel exit screening.
2. Execution of pre-decommissioning activities, such as establishing permanent utility shutoff, material haulage routes, and equipment screening areas.
3. Demolition of above-ground facilities in the process area.
4. Demolition of below-ground facilities in the process area (foundations, paved areas, concrete pads, roadways, and underground utilities) and placement of these
materials in the last active tailings cell or the Cell 1 Disposal Area.
5. Excavation of contaminated subsoils from the process area and placement in the last active tailings cell or the Cell 1 Disposal Area.
6. Clean-up of windblown contamination and placement in the last active tailings cell or the Cell 1 Disposal Area.
7. Regrading and revegetation.
This Plan describes these elements as well as the requirements prior to demolition and the
procedures to be used for specific areas of the process area. The facilities described in this Plan are shown in Figures 1 and 2.
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2.0 GENERAL REQUIREMENTS AND PROCEDURES
2.1 General
This section outlines the general requirements and procedures to be used during mill
decommissioning.
2.2 Applicable Regulations and Standards
The work shall conform to applicable Federal, State, and County environmental and safety regulations. The work shall conform to applicable conditions in the Radioactive Materials License with the Utah DRC. Safety practices, procedures, and monitoring shall be conducted
as specified by the Mine Safety and Health Administration (MSHA) and the current EFRI health and safety procedures in place.
2.3 Health and Safety Requirements
Work outlined in this Plan shall be conducted under the EFRI Radiation Protection Manual for Reclamation Activities (EFRI, 2015b), as directed by the RSO. The RSO (and approved
assistants as needed) shall conduct full-time, on-site training, personnel monitoring, and
inspection of construction activities while the site decommissioning work is in progress. The responsibilities and duties of the RSO for site reclamation and decommissioning shall be as
outlined in the EFRI Radiation Protection Manual for Reclamation Activities (EFRI, 2015b).
The Contractor shall suspend construction or demolition operations, or implement necessary precautions whenever (in the opinion of the Reclamation Project Manager or RSO),
unsatisfactory conditions exist due to rain, snow, wind, cold temperatures, excessive water, or
unacceptable traction or bearing capacity conditions. The Reclamation Project Manager and RSO each have the authority to stop Contractor work if unsafe conditions or deviations from the
Plan are observed.
Process area demolition work will be conducted in accordance with the EFRI Radiation Protection Manual for Reclamation Activities (EFRI, 2015b), as directed by the RSO. Due to the
different work activities and potential hazards involved with process area demolition, more specific procedures will be utilized for demolition work (documented as special operating procedures or work permits). These procedures will define personal protective equipment and
personnel monitoring (as necessary), regular safety meetings, and communication.
Records pertinent to decommissioning procedures for protection of health and safety will be
stored on-site at the Safety Office during decommissioning. After decommissioning activities
are complete and prior to the site being turned over to the Department of Energy (DOE), pertinent records will be stored on-site in a temporary storage facility or at the EFRI office in
Lakewood, Colorado.
2.4 Environmental Requirements
2.4.1 Contractor Activities
The Contractor shall store materials, confine equipment, and maintain construction operations
according to applicable law as, ordinances, or permits for the project site. Fuel, lubricating oils, and chemicals shall be stored and dispensed in such a manner as to prevent or contain spills
and prevent said liquids from reaching local streams or ground water. If quantities of fuel,
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lubricating oils or chemicals exceed the threshold quantities specified in the Utah regulations, the Contractor shall prepare and follow a Spill Prevention Control and Countermeasures Plan
(SPCCP) as prescribed in applicable Utah regulations. EFRI shall approve said plan. Used
lubricating oils shall be disposed of or recycled at an appropriate facility.
2.4.2 Environmental Monitoring
Existing environmental monitoring programs will continue during the time period in which reclamation and decommissioning is conducted as applicable. This includes monitoring of surface and groundwater, airborne particulates, radon, soils and vegetation, according to the
existing License conditions as applicable. As site features are reclaimed, monitoring programs for those features may cease. Any changes will be approved by DWMRC prior to the cessation of monitoring. In general, no changes to the extent of the existing programs are expected
because reclamation activities are not expected to increase exposure potential beyond the current levels.
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2.5 Medical Emergency Procedures
The following procedures will be used when medical services are required, based on two priority
levels.
2.5.1 Level One Priority
For a minor emergency requiring medical treatment (level one priority), the procedures listed
below will be followed.
1. The specific work crew will suspend activities.
2. A member of the work crew will assist the victim and perform first aid.
3. If available, other crew members will contact EFRI personnel or the EFRI Safety Coordinator and emergency services personnel.
4. EFRI radiation safety personnel will perform a contamination survey on victim and
decontaminate as appropriate.
5. After medical services have been provided, EFRI radiation safety personnel will
perform a contamination survey on emergency personnel and equipment.
6. Contaminated equipment or clothing will be retained for evaluation and decontamination.
2.5.2 Level Two Priority
For a major emergency requiring medical treatment (level two priority), the procedures listed below will be followed.
1. The specific work crew will suspend activities.
2. If injuries are life threatening, emergency services will be performed immediately and the victim transported to the nearest emergency medical facility.
3. Surveys for decontamination will be performed after medical services have been provided. The survey will also be performed on emergency personnel and equipment for alpha contamination.
4. Contaminated equipment or clothing will be retained for evaluation and
decontamination.
5. Follow other steps as listed for Level One as appropriate.
2.6 Water and Contaminant Management
Management of water and site contaminants is outlined below.
2.6.1 Runon/Runoff Control
Procedures for control of runon and runoff of meteoric water and containment of other liquids are outlined below. In addition to the procedures listed below, runon and runoff controls will also
follow the most current revision of the Stormwater Best Management Practices Plan (.
1. Water usage for outdoor dust suppression will be controlled to minimize runoff.
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2. Runoff generated from decommissioning operations will be contained on concrete or asphalt pads or in building sumps.
3. Runon diversion berms will be installed up slope of the facility, if and as necessary, to
minimize storm runon into the decommissioning work area.
4. Runoff retention berms will be installed down slope of the facility, if and as necessary,
to minimize runoff of decontamination liquids and sediment. The liquids contained will be pumped to a collection sump for removal and be transferred to appropriate receiving ponds.
5. The control berms will be inspected periodically, and modified or extended during decommissioning operations, as needed.
6. In addition to berms, the existing runoff control devices and others, such as silt
fences, may be utilized, if and as necessary.
7. The Contractor shall construct and maintain all temporary diversion and protective
works required to divert stormwater from around work areas. The Contractor shall
furnish, install, maintain, and operate all equipment required to keep excavations and other work areas free from water in order to construct the facilities as specified.
8. Water required by the Contractor for dust suppression or soil moisture conditioning
shall be obtained from wells or surface water storage areas identified by EFRI.
2.6.2 Residue Management
Procedures for control of residues are outlined below.
1. Water usage for dust suppression and decontamination washing will be required during decommissioning operations. Water required by the Contractor for dust
suppression or soil moisture conditioning shall be obtained from wells or surface water storage areas identified by EFRI.
2. Liquids identified during these activities will be contained in the building sumps, area
tanks or on concrete or asphalt pads.
3. The liquid, sediment, and solids collected will either be reused or transported to the last active tailings cell or the Cell 1 Disposal Area, or treated for permitted discharge.
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2.6.3 Contamination Control
Every effort will be made to prevent or minimize the spread of contamination during the
decommissioning operations. Procedures for control of contaminants are outlined below.
1. Personnel, vehicles, and testing equipment shall be surveyed for contamination prior to leaving the restricted area of the facility.
2. All workers involved in decommissioning operations shall be surveyed for contamination at the exit screening station and will shower if necessary prior to leaving the facility. As far as practical, the specific limits will be stated in each
section of this Plan, as determined during the area evaluation.
3. Work area access will be restricted to only authorized personnel during demolition operations. Access will be restricted during active operations and at the disposal
cell. Signs and /or barrier tape will be used to post areas where access is restricted.
2.6.4 Dust Control
Dust generation will be minimized during all preparation, salvage and demolition activities.
Procedures for control of dust are outlined below.
1. During demolition and removal operations, the equipment and structure surfaces will
be sprayed with water to prevent dust generation.
2. A chemical fixant may be applied to surfaces prone to dust generation.
3. The use of HEPA vacuuming equipment may be utilized.
4. Equipment shall be used in an efficient manner to avoid dust generation.
5. Haul roads, loading, off-loading, material evaluation and disposal areas will be sprayed with water periodically to control dust generation.
6. Water required by the Contractor for dust suppression or soil moisture conditioning shall be obtained from wells or surface water storage areas identified by EFRI.
2.6.5 Historical and Archaeological Considerations
The Contractor shall immediately notify EFRI if materials are discovered or uncovered that are
of potential historical or archeological significance. EFRI may stop work in a specific area until the materials can be evaluated for historical, cultural, or archeological significance. All materials
determined to be of significances shall be protected as determined by appropriate regulatory agencies, including removal or adjustment of work areas.
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3.0 SITE REQUIREMENTS AND PROCEDURES
3.1 General
This section outlines the site-specific requirements and procedures to be used during
decommissioning.
3.2 Site Location
The EFRI Mill site is located six miles south of Blanding, Utah on U.S. Highway 191 on a parcel of land encompassing all or part of Sections 21, 22, 27, 28, 29, 32, and 33 of T37S, R22E, and Sections 4, 5, 6, 8, 9, and 16 of T38S, R22E, Salt Lake Base and Meridian. The location
description is provided in more detail in Section 3.1 of the Reclamation Plan, Revision 5.1. The site encompasses approximately 5,415 acres. The EFRI facilities are primarily located within the approximately 686-acre restricted area.
3.3 Climate and Soil Conditions
The climate in the vicinity of the Mill can be considered as semi-arid. Average annual
precipitation is 13.32 inches. Average annual evaporation is approximately 68 inches for Class
A Pan data (EFRI, 2016)
The Mill is located within the Blanding Basin of the Colorado Plateau physiographic province.
The site is underlain by unconsolidated alluvium and indurated sedimentary rocks consisting
primarily of sandstone and shale. The alluvial materials consist mostly of aeolian silts and fin-grained aeolian sands with thicknesses ranging from a few feet up to 30 feet. The alluvium is
underlain by Mancos Shale (thickness of less than 5 feet), Dakota Sandstone (thickness of
approximately 60 feet) and the Burro Canyon Formation (sandstone with thickness of approximately 100 feet).
3.4 Site Layout and Facilities
A general layout of the Mill area is shown in Figure 2.
3.4.1 Operation History
The Mill was developed in the 1970s by Energy Fuels Nuclear, Inc. (EFN) and started operations on May 6, 1980. The Mill processed conventional ores for approximately two and one-half years before ceasing operations in February 1983. Union Carbide Corporation’s (UCC)
Metals Division obtained a majority ownership interest in 1984. UCC’s Metals Division later became Umetco Minerals Corporation (Umetco), a wholly owned subsidiary of UCC. Umetco
became the Mill operator starting in 1984. The Mill did not operate in 1984. The Mill processed
conventional ores for part of each year from October 1985 through December 1987 and from July 1988 through November 1990. Mill operations ceased again from 1991 through 1994.
EFN reacquired sole ownership on May 26, 1994 and processed conventional ores from August
1995 through January 1996. EFN processed alternate feed material (calcium fluoride) from May 1996 through September 1996. Denison (then named International Uranium (USA)
Corporation) and its affiliates acquired the Mill in May 1997 and processed alternate feed from
various sources from 1997 through early 1999, and processed conventional ore from the middle of 1999 through early 2000. Denison processed alternate feed materials from government
cleanup projects in 2002 and 2003, and processed other alternate feed materials in 2007. Denison processed uranium and vanadium ores from April 2008 through May 2009. Mill
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operations for conventional ore processing were suspended in May 2009 and resumed in March 2010. Conventional ore processing was again suspended in July 2011, resumed in November
2011 through March 2012, and suspended in April 2012. Denison became EFRI after July 25,
2012. Conventional ore processing resumed in August 2012 through June 2013, was suspended in July 2013, resumed in May 2014 through August 2014, and was suspended again
in September 2014. Alternate feed materials were still processed during the time periods of suspended conventional ore processing operations.
From the early 1990s through today, the Mill has processed alternate feed materials when the
Mill is not processing conventional ores. An alternate feed circuit was added to the Mill in June 2009 to allow for processing alternate feed materials at the same time as conventional ores.
3.4.2 Access and Security
The access and security at the Mill site during decommissioning will follow the most current revision of the Mill’s Security Program. Access control will be maintained at the Restricted Area
boundary to ensure employees and equipment are released from the site in accordance with the
current License conditions. The Restricted Area is enclosed by a combination of barbed wire and chain link fencing. The access gates are padlocked and controlled by EFRI personnel.
EFRI personnel are on-site 24-hours a day, regardless if the mill is in operation. Contractors
must have required training before entering the restricted area.
3.4.3 Utilities
Utilities on site will be maintained by EFRI outside of work areas (areas to be decommissioned
or reclaimed). Utilities inside work areas will be provided and maintained by the Contractor.
3.4.4 Sanitation Facilities
Sanitation facilities will be provided and maintained by the Contractor inside work areas.
3.4.5 Fire Protection
Fire protection will be provided by fire water supply facilities on-site, which include: 1) a 400,000
gallon Storage Tank, of which 250,000 gallons are reserved for fire emergencies; and 2) a centrifugal diesel driven pump rated at 2,000 gpm at 100 psi. This pump starts automatically when the pressure in the fire main drops below 100 psi. These fire protection facilities will
decommissioned at the end of the decommissioning schedule. In addition, a fire watchman and fire extinguisher will be required during demolition-related cutting with a torch or welding
operations.
3.5 Personnel Protection Requirements
The protection requirements and procedures to be followed have been developed to assure that
occupational exposures are maintained within the regulatory requirements and As Low as Reasonably Achievable (ALARA).
1. The standard personnel protection equipment includes full-face respiratory unit
(includes eye protection), hard hat, coveralls, rubber boots or shoe covers, and work gloves.
2. Alternative personnel protection requirements (either more or less) may be specified
by the area evaluation. If such is the case, each worker will receive a checklist identifying the specific personnel protection equipment required.
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3. Long sleeved coveralls and work gloves will be laundered onsite. New clothing and gloves will be issued to replace damaged and non-repairable items.
4. In accordance with the existing tobacco policy at the mill facility, tobacco use is not
allowed. Eating or drinking anything, including chewing gum, is only allowed in designated areas.
3.6 Occupational Monitoring Requirements
Programs currently in place for monitoring of exposures to employees will remain in effect throughout the time period during which mill decommissioning and clean up of windblown
contamination are conducted. This will include personal monitoring and the ongoing bioassay program. In general, no changes to the existing programs are expected and reclamation and decommissioning activities are not expected to increase exposure potential beyond the current
levels. The current requirements to monitor potential personnel exposure to radionuclides are specified in the EFRI Radiation Protection Manual for Reclamation Activities (EFRI, 2015b).
3.7 Operational Issues
The Plan presumes that virtually all structures on the site can be demolished using heavy equipment as described below. As a result, little or no manual labor is anticipated. This
approach should accelerate the demolition process, as well as reduce occupational exposures.
The following describes the typical work routine to be followed during demolition.
1. The demolition crew supervisor shall review the Plan requirements and confer with
the Reclamation Project Manager for changes made to the Plan. The crew
supervisor will inform the work crew of the requirements and any changes to the Plan. The RSO will assist when requested.
2. A staging area will be established near the work area and used as a personnel screening, PPE changing and storage area.
3. Personnel involved in the demolition will don the required PPE and required
monitoring equipment.
4. Demolition personnel will be surveyed for contamination, decontaminated if over the specific limits and resurveyed prior to leaving the Restricted Area.
5. All personnel performing demolition work shall be scanned for contamination and may shower before release from the Restricted Area.
6. PPE equipment will be inspected, decontaminated, and maintained in good working
order and replaced when damaged.
7. Personnel involved in demolition operations must report problems encountered or
changes that need to be made to the Plan to the Reclamation Project Manager.
Problems encountered and changes made will be documented in daily progress reports.
3.8 Training
Formal worker training will be required for all decommissioning activities and will be appropriate for the activity to be performed. The training will be given by the RSO or designee, and will
include the following information.
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1. Goals, strategies and specific tasks encompassed by this Plan.
2. Radiation protection training will be conducted for all contractor employees as
specified in the most current revision of the EFRI Radiation Safety Training Program.
The general training will include radiological safety procedures, ALARA philosophy and emergency procedures. The personnel will receive instruction pertaining to the
risks of radiation exposure, monitoring procedures and personal protective equipment.
3. MSHA training will be required for all contractor employees. This training will be site
and job specific, and will include information on industrial safety, building safety, chemical hazards, fire safety, emergency procedures, protective equipment, and an overview of planned activities.
4. Training will be documented as required by MSHA, and the appropriate procedures in the most current revision of the EFRI Radiation Safety Training Program (.

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4.0 EQUIPMENT SALVAGE
4.1 General
Equipment and structural materials (if of sufficient value for salvage) may be removed from the
facility, decontaminated and surveyed for release from the site for unrestricted use. All salvageable equipment will be decontaminated and surveyed for release as outlined in the
Radiation Protection Manual for Reclamation Activities (EFRI, 2015c). Equipment and structural materials that are not of sufficient value or salvage or cannot be feasibly decontaminated will be placed in the in the last active tailings cell or the Cell 1 Disposal Area.
4.2 Decontamination
Decontamination procedures for items to be released for unrestricted use will be developed during reclamation and will be based on the type of equipment and the construction of the
equipment (i.e. what the item is constructed of such as metal, glass, plastic etc.). Current Mill procedures will be the basis for the decontamination procedures used at the time of
reclamation. If decontamination to the unrestricted release criteria specified in the RPM Section
2.6 is not attainable, the item will be disposed of on site.
Decontamination of potentially salvageable equipment will be conducted based on the nature of
contamination, the surfaces to be decontaminated, and worker health and safety. Decontamination methods may include low-pressure washing, followed by surveying of washed
surfaces. If contamination remains, decontamination methods may include scraping, steam
cleaning, sand blasting, or grinding. Surveying of cleaned surfaces will be conducted on dried surfaces, with release based on criteria specified in the EFRI Radiation Protection Manual for
Reclamation Activities (EFRI, 2015c). Equipment and structural materials shall not be release from the site without approval by the RSO.
4.3 Decontamination Procedures
Efforts will be made to minimize the spread of contamination on salvageable equipment. Decontamination liquids or chemicals may be used to aid in equipment contamination removal. General procedures for decontamination are listed below.
1. Wet down areas and equipment surfaces with water spray followed by water washing. Steam cleaning may be required to augment washing.
2. Wash equipment and structures and remove loose residue.
3. Wash insides of equipment and dispose of residues.
4. Collect liquids generated during decontamination activities for disposal.
Material and equipment slated for disposal will be transported to the last active tailings cell or
the Cell 1 Disposal Area. Salvageable items meeting unrestricted release criteria will be transported to a designated clean area for storage. Salvageable items meeting restricted
release criteria will be transported to a designated restricted release are for storage.
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4.4 Decontamination Areas
A decontamination area will be established so that equipment to be offered for salvage may be
decontaminated, as necessary. This area is planned to be an existing concrete pad with a water
collection area or sump.
A laydown area will be established outside of the facility Restricted Area so that
decontaminated, salvageable equipment that has been surveyed and approved for unrestricted release can be stored prior to release from EFRI custody. A separate laydown area will be established within the restricted area for equipment decontaminated for restricted release, if any.
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5.0 PRE-DEMOLITION ACTIVITIES
5.1 General
This section describes the preparation of the site areas for reclamation and decommissioning.
This work will be conducted according to applicable sections of the EFRI Radiation Protection Manual for Reclamation Activities (EFRI, 2015c). The Contractor shall conduct these activities
using written procedures that have been approved by EFRI.
5.2 Area Evaluation Process
For each structure in the process area, a pre-demolition survey and inventory will be conducted.
This work (area evaluation process) will include the items listed below.
1. Review health protection requirements (if different from the standard).
2. Review monitoring requirements (if different from the standard).
3. Review utilities to confirm that electrical power lines, high pressure pipelines and other potential hazards to demolition are identified.
4. Perform radiation surveys to identify areas of above-background exposure to ionizing
radiation. EFRI’s historical survey data may be used for this purpose.
5. Sample air to identify the need for respiratory protection from dust, gases, and
airborne radioactivity. This would include radon daughter surveys to identify potential
areas of exposure to radon-222 gas.
6. Survey hazardous materials to identify and quantify potentially hazardous materials
such as strong acids or bases, oxidizing agents, corrosive materials, flammable
materials or pressurized gases.
7. Review asbestos inspection reports (see Section 5.3.4) to determine the presence of
asbestos-containing materials and procedures for handling and disposal.
8. Survey residual liquid to identify residual liquids in tanks, vessels, pipelines, and other storage areas that would require liquid management for treatment and
disposal.
9. Conduct structural engineering surveys to assess the physical condition of the structure and its supporting members.
10. Identify equipment that will be reused, salvaged, or disposed.
11. Determine what structural members or equipment needs to be cut into manageable sections for transport.
12. Decide if supplemental runoff control berms need to be constructed or modified.
13. Obtain area and equipment contamination measurements.
14. Mark salvageable equipment, if necessary.
15. Plan haulage routes.

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5.3 General Preparation Work
5.3.1 Circuit Cleanup
Circuits will be flushed and resultant fluids and solids will be pumped to the appropriate
receiving pond. All products will be removed from product storage buildings, prior to demolition of those buildings. Reagents used in the processing will be removed from the site or disposed
of as described below.
Process inorganic compounds. Acids, bases or other inorganics that have become
contaminated with radioactive materials will be pH-adjusted or otherwise neutralized, if and as
necessary, and will be disposed of in the last active tailings cell or the Cell 1 Disposal Area. Inorganics that are unaffected by the process (because they were unused) will be sold or returned to the original vendor, if possible. Otherwise, the pH will be adjusted or otherwise
neutralized, if and as necessary, and disposed of in the last active tailings cell or the Cell 1 Disposal Area.
Process organic compounds. Organics used in processing will be stripped with sulfuric acid
or other reagents to remove radionuclides and metals and disposed as appropriate. Uncontaminated organics will be returned to the original vendor or sold, if possible.
5.3.2 Laboratory Reagents
Laboratory reagents will be returned to the original vendor, sold, donated to appropriate users or neutralized and placed in the appropriate disposal location.
5.3.3 Oils and Lubricants
New oils will be returned to the original vendor, sold to another party, or disposed as necessary. Used oils will be disposed of in the last active tailings cell.
5.3.4 Asbestos
A facility-wide inspection to determine the presence of asbestos in building materials in the milling facility was conducted for EFRI in 2012. A detailed asbestos survey was conducted, as
necessary, on a building-by-building basis to confirm identification of building materials and outline methods of asbestos containment, handling, and disposal. Inspection reports were prepared after the facility-wide inspection and submitted to the DWMRC as attachments to EFRI
(2012a) and EFRI (2015b). Asbestos-containing materials will be removed according to pertinent asbestos regulations and procedures presented in the inspection reports and will be
placed in the last active tailings cell or the Cell 1 Disposal Area.
5.4 Process Area Preparation
Work in the process area includes the water management tasks outlined below.
1. Removal and/or evaporation of water in existing ponds.
2. Diversion of clean area stormwater runoff from work areas (where facilities
demolition and material excavation will take place).
3. Collection of stormwater runoff from within the work areas to be used for disposed material compaction or dust suppression and/or retained in a temporary evaporation
pond.
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5.5 Staging and Storage Areas
Areas on site used for equipment or material staging or temporary storage will be in approved
areas of the site. These areas will be prepared in a manner consistent with EFRI plans for
stormwater management. These areas will be prepared in conjunction with facilities demolition and site reclamation work.
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6.0 PROCESS AREA DEMOLITION
6.1 General Description
This section outlines the demolition of facilities and structures in the process area. The major
structures are shown on Figure 2 and are outlined in this section.
6.2 Mill Area
The uranium and vanadium processing areas of the Mill, including all equipment, structures and support facilities, will be decommissioned and disposed of in tailings or buried on site as appropriate. All equipment, including tankage and piping, agitation equipment, process control
instrumentation and switchgear, and contaminated structures will be cut up, removed and buried in tailings prior to final cover placement. Concrete structures and foundations will be broken up and removed. Concrete foundations may be left in place and covered with soil as appropriate.
These decommissioned areas would include, but not be limited to the following:
• Coarse ore bin and associated equipment, conveyors and structures.
• Grind circuit including semi-autogeneous grind (SAG) Mill, screens, pumps and cyclones.
• The three pulp storage tanks to the east of the Mill building, including all tankage, agitation equipment, pumps and piping.
• The seven leach tanks inside the main Mill building, including all agitation equipment, pumps and piping.
• The counter-current decantation (CCD) circuit including all thickeners and equipment, pumps and piping.
• Uranium precipitation circuit, including all thickeners, pumps and piping.
• The two yellow cake dryers and all mechanical and electrical support equipment,
including uranium packaging equipment.
• The clarifiers to the west of the Mill building including the preleach thickener (PLT),
clarifier and claricone area.
• The boiler and all ancillary equipment and buildings.
• The entire vanadium precipitation, drying and fusion circuit.
• All external tankage not included in the previous list including reagent tanks for the
storage of acid, ammonia, kerosene, water, dry chemicals, etc. and the vanadium oxidation circuit.
• The ammonium sulfate pad.
• The uranium and vanadium solvent extraction (SX) circuit including all SX and
reagent tankage, mixers and settlers, pumps and piping.
• The SX building.
• The Mill building.
• The Alternate Feed processing circuit.
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• Decontamination pads.
• The office building.
• The shop and warehouse building.
• The sample plant building.
• The Reagent storage building.
6.3 Demolition Strategy
As described above, a number of pre-demolition activities will be completed prior to actual demolition of the structures and buildings. This approach assumes that the facility equipment, buildings, and structures will have any product, reagents, residues and other fluids removed.
Utilities for individual buildings will be disconnected on a building-by-building basis.
6.3.1 Staging of Decommissioning
Although different types of decommissioning equipment will be used to demolish each different
type of structure or equipment, demolition will proceed according to the general staging process described below while allowing for maximum use of the support areas of the facility such as the office and shop areas. The first stage consists of demolition of above-ground structures such as
piping and tanks, then building and enclosed structures. The second stage consists of concrete removal (structure floor slabs, below-ground walls, and footings). The third stage consists of
removal of underground utilities (most likely conducted at the same time as concrete removal).
The fourth stage is excavation and removal of contaminated soils.
6.3.2 Remote Demolition
The strategy for demolition is based on current equipment and procedures used for structural
demolition and used successfully at uranium mill sites in the western United States. This strategy consists of use of mechanized equipment specially designed for equipped for
demolition work, minimizing manual labor. Heavier duty equipment will allow remote-controlled water sprays to be directed as necessary, will require fewer staff, and will lower occupational exposures.
6.3.3 Demolition Equipment
The anticipated demolition equipment is described below. All heavy equipment to be used for demolition should have an enclosed operator’s cabin that is equipped with a HEPA filter and an
air conditioning system. This enclosure will reduce potential internal exposures from airborne materials.
Hydraulic shear. This is a hydraulically operated attachment on the end of the arm of a track-
mounted excavator or crane. This shear will be used to cut piping, I-beams, tanks and other steel into pieces that will fit onto trucks for transport to the last active tailings cell or the Cell 1
Disposal Area.
Grapple. This is a hydraulically operated attachment on the end of the arm of the track-mounted excavator or crane. The grapple is either an excavator bucket with a thumb, or a
grasping attachment with several “fingers.” The grapple will be used to load dismantled pieces
of piping, tanks, and concrete onto trucks for transport to the last active tailings cell or the Cell 1 Disposal Area.
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Hydraulic excavator. A large hydraulic excavator will be used to load dismantled pieces of piping, tanks, and concrete onto trucks for transport to the last active tailings cell or the Cell 1
Disposal Area. Also, excavator buckets with different widths may be used to excavate solids
from tanks or cemented soils from around deeper foundations or pilings.
Front-end loader. In areas with smooth ground conditions and free from debris that may
damage rubber tires, a front-end loader will be used to load soil, dismantled pieces of piping, tanks, or concrete onto trucks for transport to the last active tailings cell or the Cell 1 Disposal Area.
Concrete shear. This is a hydraulically operated attachment on the end of the arm of a track-mounted excavator or crane. The concrete shear is similar to the steel shear, used to break concrete walls, slabs, and other facilities that will fit into the jaws of the shear. The shear breaks
the concrete into pieces that can be loaded for transport to the last active tailings cell or the Cell 1 Disposal Area.
Concrete impactor. For concrete foundations that are of dimensions that cannot be broken
with the concrete shear, a concrete impactor will be used. This is another attachment on the end of the arm of a track-mounted excavator or crane. The impactor use a vibratory tip (similar
to a jack-hammer) to break concrete into pieces that can be loaded into trucks for transport to
the last active tailings cell or the Cell 1 Disposal Area.
Trucks. Dump trucks as large as are practical and available will be used to transport
dismantled equipment, concrete, and soils to the last active tailings cell or the Cell 1 Disposal
Area with minimal handling. The size of the truck beds will dictate the size of the facility debris to be broken or cut.
Scraper. For soils excavated during the later phase of contaminated soil excavation, scrapers may be used in place of trucks and loaders. Push-loading scrapers would most likely be used for soil excavation, transport, and placement.
Soil ripper. To expedite contaminated soil excavation, a dozer or grader-mounted soil ripper or ripping bar will be used to break up cemented soil or sedimentary rock to enable scrapers or loaders to load contaminated soils.
Water truck. A water truck or similar rubber-tired watering equipment will be routinely used for dust suppression to wet haul roads from the specific demolition site to the area of the last active
tailings cell and the Cell 1 Disposal Area.
Grader. A road grader or blade will be used to smooth haul roads and other work surfaces on a routine basis. Debris, rock, or wet materials generated by the blade work will be transported to
the last active tailings cell or the Cell 1 Disposal Area.
6.4 Utilities Management
All utilities to the facility will be disconnected prior to starting demolition operations for a given
building, structure or area. The specific procedures and precautionary measures for each utility to be followed are listed below.
6.4.1 Liquefied Natural Gas and Propane Systems Disconnect
1. Shut off main valve at meter.
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2. Light heating equipment to burn off residual fuel.
3. Blow out all lines with compressed air.
4. Verify with combustible gas meter that lines are free of fuel.
6.4.2 Electrical System Disconnect
1. Shut down service at electrical substations.
2. Verify with metering equipment that the power is off.
3. Disconnect power feeders to the milling facility.
4. Verify with metering equipment that all systems are disconnected.
6.4.3 Water System Disconnect
1. Disconnect the piping system to the milling facility (if not already disconnected).
2. Check main valve to verify system is off and disconnected.
6.4.4 Phone System
EFRI will also have telephone services maintained in the office building for use during decommissioning and eventually disconnected by the provider.
6.5 Surface Structure Removal
As described in the strategy above, the order in which structures will be demolished and
removed is generally determined by the types of tools that are best suited to those types of
structures. Therefore, all surface structures will be demolished prior to concrete and contaminated soil removal. All materials will be disposed in last active tailings cell or the Cell 1
Disposal Area.
Depending on the type of building, it may be demolished with equipment and structures remaining inside or the equipment may be removed prior to the building’s structure being
demolished. Buildings and their associated equipment will be the first major category of demolition that is performed, except for support areas of the facilities such as the office and shop areas. It is anticipated that the type of demolition equipment used to take down buildings
will be the same required for outdoor piping and tanks.
6.6 Concrete Removal
Once surface structures, including all buildings, tanks, piping, and pipe racks, have been
demolished and disposed, then specialized concrete removal operations may begin.
It is anticipated that the major equipment used will be a concrete shear, a concrete impactor, a large backhoe, and haulage trucks. Each of these will be operated from within an enclosed cab,
thus reducing exposure to radioactive materials. Concrete floors and walls of normal size and thickness (up to 1 foot) will be removed using the heavy equipment described above. Concrete
shears will be used to cut slabs into pieces that are transportable to the disposal cell.
Concrete below grade and thicker than 1 foot will likely be broken using a combination of the impactor, the shear, and a backhoe that will dig access trenches. Removal of structure
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foundations, interior floor slabs, and exterior slabs and parking areas will follow the general sequence listed below.
1. Cutting (with a concrete saw) or breaking up (with a hydraulic shear, remote jack
hammer or similar vibratory tool) the slab or foundation material into pieces that can be loaded and hauled by construction equipment.
2. Excavation of contaminated soils from under floor areas and around footings.
3. Transport of the concrete pieces and excavated soils to last active tailings cell, the Cell 1 Disposal Area or approved temporary storage location.
4. Placement of the pieces in the disposal cell by dumping and (where possible) working with a dozer or trackhoe to minimize void spaces.
5. Covering the pieces with contaminated soil or similar material, with vibratory
compaction to minimize void spaces.
6.7 Utility Removal
Equipment to be used to utilities (both above-ground and below-ground) depend on the location
of the structure. It is anticipated that the major equipment used will be a hydraulic shear, a grapple, a large backhoe, and haulage trucks. Each of these will be operated from within an
enclosed cab, thus reducing exposure to dust or radioactive materials.
Once the concrete structures are removed, the underground utilities will be located and exposed with a metal detector or conductivity meter in conjunction with existing utility maps will be used
to locate pipes and lines. A combination of the backhoe and the grapple will be used to expose
the lines, which will be severed using the hydraulic shear.
6.8 Miscellaneous Site-Wide Facilities
An outside contractor will be retained to empty the septic tanks prior to demolition. The septic tanks will be sampled prior to pumping in accordance with Mill procedures. The septic tanks and the drain fields will be excavated and transported to last active tailings cell or the Cell 1
Disposal Area after pumping. Sewer system piping will be excavated and disposed of after flushing.
Miscellaneous facilities to be decommissioned include the boneyard, tailings lines, and mill
runoff controls. The boneyard is located to the south of the Mill area and consists of a collection of used and potentially contaminated equipment and equipment parts that have been removed
from the Mill or various other buildings over a period of time. The surface tailings lines will be
removed one all liquid effluent from the demolition is completed and not more liquid effluent is expected. Mill runoff control systems including underground culverts and miscellaneous
concrete structures will be decommissioned.
6.9 Contaminated Soils
Contaminated areas on the Mill site will be primarily superficial and include the ore storage area
and surface contamination of some roads, except the claricone and ammonium sulfate pad
areas. All ore and alternate feed materials will have been previously removed from the ore stockpile area or will be transported and disposed of as contaminated material. The depth of
excavation will vary depending on the extent of contamination and will be governed by the
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criteria outlined in Attachment A (Technical Specifications) of the Reclamation Plan, Revision 5.1, except for the claricone and ammonium pad areas which had removal depths and extents
outlined in letters submitted by EFRI to the DWMRC on 10/26/12 and 12/23/13, respectively.
Contaminated soils will be disposed of in last active tailings cell or the Cell 1 Disposal Area. Contaminated soils will be placed in the last active cell or the Cell 1 Disposal Area as random fill
material (material used to fill voids within mill material, achieve desired cover system slopes, and provide a firm base for construction of the cover system). Only uncontaminated soils meeting criteria for cover materials will be used in the cover system over the tailings cells.
6.10 Windblown Contamination
Windblown contamination is defined as Mill derived contaminants dispersed by the wind to surrounding areas. The potential areas affected by windblown contamination will be surveyed
as outlined in Attachment A (Technical Specifications) of the Reclamation Plan, Revision 5.1. Areas covered by the existing Mill facilities and ore storage pad, the tailings cells and adjacent
stockpiles of random fill, clay and topsoil, will be excluded from the survey. Materials from these
areas will be removed in conjunction with final reclamation and decommissioning of the Mill and tailings cells. Windblown contaminated material will be detected by a gamma survey using the
criteria in Attachment A (Technical Specifications) of the Reclamation Plan, Revision 5.1 and will
be excavated and disposed of in the last active tailings cell or the Cell 1 Disposal Area.
6.11 Preparation of Demolition Debris for Disposal
Because of the wide variety in shape and size of equipment and structural materials, the
following guidelines will be used in sizing, handling and disposing of debris. Additional detail on material placement is provided in Attachment A (Technical Specifications) of the Reclamation
Plan, Revision 5.1.
1. Material will be cut or dismantled into pieces that can be safely lifted or carried with the equipment being used. Material will also be cut or dismantled to minimize void
spaces after disposal.
2. A front-end loader, crawler, hydraulic excavator, or equivalent equipment will be utilized to crush or compact compressible materials. These materials will be laid out
in a staging area or other approved area to facilitate crushing or compacting with equipment.
3. Pipe or conduit with an opening or diameter larger than 12 inches that cannot be
crushed will be filled with contaminated soil, clean fill soil, or grout and buried.
4. Tanks and vats will be handled according to the wall material and wall thickness.
Tanks will be crushed or compacted if possible. Tanks that cannot be crushed will be
dismantled, if feasible. Tanks that cannot be crushed or dismantled will be transported to the last active tailings cell or the Cell 1 Disposal Area, filled with
contaminated soil, clean fill soil, or grout and buried.

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7.0 REGRADING AND REVEGETATION
7.1 Regrading
Regrading will be conducted after completion of contaminated soil excavation. The excavated
surface of the mill facility will be regraded to remove depressions and direct storm water runoff in directions and toward areas desired for final site drainage. The completed regraded surfaces
will be covered with a layer of topsoil or suitable plant growth media soil at a minimum thickness of six inches.
7.2 Revegetation
Revegetation will consist of establishing a self-sustaining cover of selected vegetation of the completed regraded and covered surfaces of the milling facility. The vegetation species mix, planting methods, weed control procedures, and revegetation success monitoring are provided
in Attachment A (Technical Specifications) of the Reclamation Plan, Revision 5.1.

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8.0 REFERENCES
Denison Mines (USA) Corp. (Denison), 2009. Reclamation Plan White Mesa Mill, Blanding,
Utah, Revision 4.0. November.
Denison Mines (USA) Corp. (Denison), 2011. Reclamation Plan White Mesa Mill, Blanding, Utah, Revision 5.0. September.
Energy Fuels Resources (USA) Inc. (EFRI), 2012a. Responses to Interrogatories – Round 1 for Reclamation Plan, Revision 5.0, March 2012. August 15.
Energy Fuels Resources (USA) Inc. (EFRI), 2015b. Responses to Review of August 15, 2012
(and May 31, 2012) Energy Fuels Resources (USA) Inc. Responses to Round 1 Interrogatories on Revision 5 Reclamation Plan, White Mesa Mill Site, Blanding Utah, Report Dated September 2011. August 31.
Energy Fuels Resources (USA) Inc. (EFRI), 2015c. White Mesa Mill, Standard Operating Procedures, Book #20, Radiation Protection Manual for Reclamation Activities. August.

REGIONAL LOCATION MAP FIGURE 1
1009740 LOC MAP
WHITE MESA MILL TAILINGS RECLAMATION
AUG 2016ENERGY FUELS
REFERENCE:
ADAPTED FROM FIGURE 1-1 IN DENISON MINES (USA)
CORPORATION, 2009. RECLAMATION PLAN WHITE MESA MILL,
BLANDING, UTAH. VERSION 4.0. NOVEMBER.
PROJECT
llTLE 8 MWH
DATE
SITE MAP OF MILL AREA FIGURE 2
1009740 SITE MAP_MOD
WHITE MESA MILL RECLAMATION
AUG 2016ENERGY FUELS
PRELEACH THICKENER
CLARIFIER
Reclamation Plan
White Mesa Mill
Blanding, Utah
Radioactive Materials License No. UT1900479
Revision 5.1B
December 2016February 2018
Prepared by: Energy Fuels Resources (USA) Inc. 225 Union Blvd., Suite 600 Lakewood, CO 80228
Page i Revision 5.1B Energy Fuels Resources (USA) Inc. White Mesa Mill Reclamation Plan

TABLE OF CONTENTS
Page
INTRODUCTION ......................................................................................................................................... 1 
Summary of Plan ......................................................................................................................................... 1 
Plan Organization ........................................................................................................................................ 1 
1 SITE CHARACTERISTICS ............................................................................................................ 1-1 
1.1 Climate and Meteorology ............................................................................................................. 1-5 
1.1.1 Regional ................................................................................................................................. 1-5 
1.1.2 Storms (FES Section 2.1.4, updated) .................................................................................... 1-8 
1.1.3 On Site ................................................................................................................................... 1-8 
1.2 Topography ................................................................................................................................. 1-10 
1.3 Archeological Resources ............................................................................................................ 1-10 
1.3.1 Archeological Sites ............................................................................................................. 1-10 
1.3.2 Current Status of Excavation .............................................................................................. 1-11 
1.4 Surface Water ............................................................................................................................. 1-12 
1.4.1 Surface Water Description (FES Section 2.6.1.1) .............................................................. 1-12 
1.4.2 Surface Water Quality as of the Date of the FES (FES Section 2.6.1.2) ........................... 1-15 
1.4.3 Surface Water Background Quality .................................................................................... 1-18 
1.5 Groundwater ............................................................................................................................... 1-22 
1.5.1 Groundwater Characteristics ............................................................................................... 1-22 
1.5.2 Seep and Spring Occurrence and Hydrogeology ............................................................... 1-33 
1.5.3 Groundwater Quality ........................................................................................................... 1-37 
1.5.4 Background Groundwater Quality in the Perched Aquifer ................................................ 1-42 
1.5.5 Quality of Groundwater at the Compliance Monitoring Point .......................................... 1-46 
1.5.6 Springs and Seeps ............................................................................................................... 1-46 
1.5.7 Groundwater Appropriations Within a Five Mile Radius .................................................. 1-51 
1.6 Geology ....................................................................................................................................... 1-51 
1.6.1 Regional Geology ................................................................................................................ 1-80 
1.6.2 Blanding Site Geology ........................................................................................................ 1-88 
1.6.3 Site-Specific Probabilistic Seismic Hazard Analysis ....................................................... 1-100 
1.7 Biota (1978 ER Section 2.9) .................................................................................................... 1-101 
1.7.1 Terrestrial (1978 ER Section 2.9.1) .................................................................................. 1-101 
1.7.2 Aquatic Biota (1978 ER Section 2.9.2) ............................................................................. 1-107 
1.7.3 Background Radiation (2007 ER, Section 3.13.1) ........................................................... 1-108 
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1.7.4 Mill Site Background (1978 ER Section 2.10) ................................................................. 1-109 
1.7.5 Current Monitoring Data ................................................................................................... 1-109 
2 EXISTING FACILITY ..................................................................................................................... 2-1 
2.1 Facility Construction History ....................................................................................................... 2-1 
2.1.1 Mill and Mill Tailings System .............................................................................................. 2-1 
2.2 Facility Operations ....................................................................................................................... 2-1 
2.2.1 Operating Periods .................................................................................................................. 2-1 
2.2.2 Mill Circuit ............................................................................................................................ 2-2 
2.2.3 Tailings Management Facilities ............................................................................................ 2-3 
2.3 Monitoring Programs ................................................................................................................... 2-5 
2.3.1 Monitoring and Reporting Under the Mill’s GWDP ........................................................... 2-5 
2.3.2 Monitoring and Inspections Required Under the License .................................................. 2-14 
3 TAILINGS RECLAMATION PLAN ............................................................................................. 3-1 
3.1 Location and Property Description .............................................................................................. 3-1 
3.2 Facilities to be Reclaimed ............................................................................................................ 3-3 
3.2.1 Summary of Facilities to be Reclaimed ................................................................................ 3-3 
3.2.2 Tailings and Evaporative Cells ............................................................................................. 3-4 
3.3 Design Criteria .............................................................................................................................. 3-7 
3.3.1 Regulatory Criteria ................................................................................................................ 3-7 
3.3.2 Radon Flux Attenuation ........................................................................................................ 3-8 
3.3.3 Infiltration Analysis .............................................................................................................. 3-8 
3.3.4 Freeze/Thaw Evaluation ....................................................................................................... 3-9 
3.3.5 Soil Cover Erosion Protection .............................................................................................. 3-9 
3.3.6 Slope Stability Analysis ...................................................................................................... 3-10 
3.3.7 Tailings Dewatering ............................................................................................................ 3-10 
3.3.8 Settlement and Liquefaction Analyses ............................................................................... 3-11 
3.3.9 Vegetation and Biointrusion ............................................................................................... 3-12 
3.3.10 Cover Material/Cover Material Volumes ........................................................................... 3-12 
4 MILL DECOMMISSIONING PLAN ............................................................................................. 4-1 
5 REVERSION TO EXISTING COVER DESIGN.......................................................................... 5-1 
5.1 Background ................................................................................................................................... 5-1 
5.2 Proposed Cover Design Meets all Applicable Regulatory Criteria ............................................ 5-1 
5.3 Proposed Cover Design Does not Meet all Applicable Regulatory Criteria .............................. 5-2 
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6 MILESTONES AND SCHEDULE COMMITMENTS FOR RECLAMATION ...................... 6-1 
6.1. Background ................................................................................................................................... 6-1 
6.2. Milestones and Schedule Commitments ...................................................................................... 6-2 
6.2.1. General .................................................................................................................................. 6-2 
6.2.2. Deadlines, Interim Milestones and Schedule Commitments for Closure of Cell 2 ............ 6-5 
6.2.3. Milestones and Schedule Commitments for Closure of a Conventional Impoundment (i.e., a Tailings Impoundment), other than Cell 2 ................................................................ 6-6 
6.2.4. Milestones and Schedule Commitments for Closure of a Non-Conventional Impoundment (e.g., an Evaporation Pond) ......................................................................... 6-10 
6.2.5. Additional Milestone for Final Mill Closure ...................................................................... 6-11 
6.2.6. Summary Table of Milestones ............................................................................................ 6-12 
REFERENCES .......................................................................................................................................... R-1 
INTRODUCTION ......................................................................................................................................... 1 
Summary of Plan ......................................................................................................................................... 1 
Plan Organization ........................................................................................................................................ 1 
1 SITE CHARACTERISTICS ............................................................................................................ 1-1 
1.1 Climate and Meteorology ............................................................................................................. 1-5 
1.1.1 Regional ................................................................................................................................. 1-5 
1.1.2 Storms (FES Section 2.1.4, updated) .................................................................................... 1-8 
1.1.3 On Site ................................................................................................................................... 1-8 
1.2 Topography ................................................................................................................................. 1-10 
1.3 Archeological Resources ............................................................................................................ 1-10 
1.3.1 Archeological Sites ............................................................................................................. 1-10 
1.3.2 Current Status of Excavation .............................................................................................. 1-11 
1.4 Surface Water ............................................................................................................................. 1-12 
1.4.1 Surface Water Description (FES Section 2.6.1.1) .............................................................. 1-12 
1.4.2 Surface Water Quality as of the Date of the FES (FES Section 2.6.1.2) ........................... 1-15 
1.4.3 Surface Water Background Quality .................................................................................... 1-18 
1.5 Groundwater ............................................................................................................................... 1-22 
1.5.1 Groundwater Characteristics ............................................................................................... 1-22 
1.5.2 Seep and Spring Occurrence and Hydrogeology ............................................................... 1-33 
1.5.3 Groundwater Quality ........................................................................................................... 1-37 
1.5.4 Background Groundwater Quality in the Perched Aquifer ................................................ 1-42 
1.5.5 Quality of Groundwater at the Compliance Monitoring Point .......................................... 1-46 
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1.5.6 Springs and Seeps ............................................................................................................... 1-46 
1.5.7 Groundwater Appropriations Within a Five Mile Radius .................................................. 1-51 
1.6 Geology ....................................................................................................................................... 1-51 
1.6.1 Regional Geology ................................................................................................................ 1-80 
1.6.2 Blanding Site Geology ........................................................................................................ 1-88 
1.6.3 Site-Specific Probabilistic Seismic Hazard Analysis ....................................................... 1-100 
1.7 Biota (1978 ER Section 2.9) .................................................................................................... 1-101 
1.7.1 Terrestrial (1978 ER Section 2.9.1) .................................................................................. 1-101 
1.7.2 Aquatic Biota (1978 ER Section 2.9.2) ............................................................................ 1-107 
1.7.3 Background Radiation (2007 ER, Section 3.13.1) ........................................................... 1-108 
1.7.4 Mill Site Background (1978 ER Section 2.10) ................................................................. 1-109 
1.7.5 Current Monitoring Data ................................................................................................... 1-109 
2 EXISTING FACILITY ..................................................................................................................... 2-1 
2.1 Facility Construction History ....................................................................................................... 2-1 
2.1.1 Mill and Mill Tailings System .............................................................................................. 2-1 
2.2 Facility Operations ....................................................................................................................... 2-1 
2.2.1 Operating Periods .................................................................................................................. 2-1 
2.2.2 Mill Circuit ............................................................................................................................ 2-2 
2.2.3 Tailings Management Facilities ............................................................................................ 2-3 
2.3 Monitoring Programs ................................................................................................................... 2-5 
2.3.1 Monitoring and Reporting Under the Mill’s GWDP ........................................................... 2-5 
2.3.2 Monitoring and Inspections Required Under the License .................................................. 2-14 
3 TAILINGS RECLAMATION PLAN ............................................................................................. 3-1 
3.1 Location and Property Description .............................................................................................. 3-1 
3.2 Facilities to be Reclaimed ............................................................................................................ 3-3 
3.2.1 Summary of Facilities to be Reclaimed ................................................................................ 3-3 
3.2.2 Tailings and Evaporative Cells ............................................................................................. 3-4 
3.3 Design Criteria .............................................................................................................................. 3-7 
3.3.1 Regulatory Criteria ................................................................................................................ 3-7 
3.3.2 Radon Flux Attenuation ........................................................................................................ 3-8 
3.3.3 Infiltration Analysis .............................................................................................................. 3-8 
3.3.4 Freeze/Thaw Evaluation ....................................................................................................... 3-9 
3.3.5 Soil Cover Erosion Protection .............................................................................................. 3-9 
3.3.6 Slope Stability Analysis ...................................................................................................... 3-10 
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3.3.7 Tailings Dewatering ............................................................................................................ 3-10 
3.3.8 Settlement and Liquefaction Analyses ............................................................................... 3-11 
3.3.9 Vegetation and Biointrusion ............................................................................................... 3-12 
3.3.10 Cover Material/Cover Material Volumes ........................................................................... 3-12 
4 MILL DECOMMISSIONING PLAN ............................................................................................. 4-1 
5 REVERSION TO EXISTING COVER DESIGN.......................................................................... 5-1 
5.1 Background ................................................................................................................................... 5-1 
5.2 Proposed Cover Design Meets all Applicable Regulatory Criteria ............................................ 5-1 
5.3 Proposed Cover Design Does not Meet all Applicable Regulatory Criteria .............................. 5-2 
6 MILESTONES FOR RECLAMATION ......................................................................................... 6-1 
6.1 Background ................................................................................................................................... 6-1 
6.2 Milestones ..................................................................................................................................... 6-1 
6.2.1 General .................................................................................................................................. 6-1 
6.2.2 Deadlines and Interim Milestones for Closure of Cell 2 ...................................................... 6-3 
6.2.3 Milestones for Closure of an Individual Tailings Impoundment, other than Cell 2, that Ceases Operation While the Mill Facility as a Whole Remains in Operation .................... 6-3 
6.2.4 Milestones Applicable to Final Mill Closure ....................................................................... 6-5 
REFERENCES .............................................................................................................................................. 1 

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Page vi Revision 5.1B Energy Fuels Resources (USA) Inc. White Mesa Mill Reclamation Plan

LIST OF TABLES
Table Description Page
Table I-1 Revisions to Attachments and Appendices in Reclamation Plan ................................................. 3 Table 1.1-1 Period of Record General Climate Summary – Precipitation .................................................. 1-6 Table 1.1-2 Period of Record General Climate Summary - Temperature .................................................. 1-7 Table 1.3-1 Distribution of Recorded Sites According to Temporal Position .......................................... 1-11 Table 1.4-1 Drainage Areas of Project Vicinity and Region ..................................................................... 1-15 
Table 1.5-1 Surveyed Locations and Elevations of Seeps and Springs and the Frog Pond (December 2009) ...................................................................................................................................... 1-33 Table 1.5-2 Water Quality of the Navajo Sandstone Aquifer in the Mill Vicinity ................................... 1-39 Table 1.5-3 Results of Quarterly Sampling Ruin Spring (2003-2004) ..................................................... 1-47 Table 1.5-4 Seeps and Springs Sampling.................................................................................................. 1-49 Table 1.5-5 Wells Located Within a 5-Mile Radius of the White Mesa Uranium Mill (Denison, 2009)................................................................................................................................................ 1-52 Table 1.6-1 Generalized Stratigraphic Section of Subsurface Rocks Based on Oil-Well Logs (Table 2.6-1 UMETCO) ................................................................................................................... 1-82 Table 1.6-2 Generalized Stratigraphic Section of Exposed Rocks in the Project Vicinity (Table 2.6-2 UMETCO) .......................................................................................................................... 1-83 
Table 1.6-3 Modified Mercalli Scale ......................................................................................................... 1-94 Table 1.7-1 Community Types and Expanse Within the Project site Boundary .................................... 1-102 
Table 1.7-2 Ground Cover For Each Community Within the Project Site Boundary ............................ 1-102 Table 1.7-3 Birds Observed in the Vicinity of the White Mesa Project ................................................. 1-105 Table 1.7-4 Endangered, Threatened and Candidate Species in the Mill Area ...................................... 1-106 Table 1.7-5 Species Managed Under Conservation Agreements/Strategies at the Mill Area ................ 1-107 Table 2.3-1 Groundwater Monitoring Constituents Listed in Table 2 of the GWDP ................................ 2-7 Table 2.3-2 Stack Sampling Requirements ................................................................................................ 2-20 Table 2.3-3 Operational Phase Surface Water Monitoring Program ........................................................ 2-21 
Table 3.3-1. Reclamation Cover Material Quantity Summary ................................................................. 3-12 Table I-1 Revisions to Attachments and Appendices in Reclamation Plan ................................................. 3 
Table 1.1-1 Period of Record General Climate Summary – Precipitation .................................................. 1-6 Table 1.1-2 Period of Record General Climate Summary - Temperature .................................................. 1-7 
Table 1.3-1 Distribution of Recorded Sites According to Temporal Position .......................................... 1-11 Table 1.4-1 Drainage Areas of Project Vicinity and Region ..................................................................... 1-15 Table 1.5-1 Surveyed Locations and Elevations of Seeps and Springs and the Frog Pond (December 2009) ...................................................................................................................................... 1-33 Table 1.5-2 Water Quality of the Navajo Sandstone Aquifer in the Mill Vicinity ................................... 1-39 Table 1.5-3 Results of Quarterly Sampling Ruin Spring (2003-2004) ..................................................... 1-47 Table 1.5-4 Seeps and Springs Sampling.................................................................................................. 1-49 Table 1.5-5 Wells Located Within a 5-Mile Radius of the White Mesa Uranium Mill (Denison, 2009)................................................................................................................................................ 1-52 
Table 1.6-1 Generalized Stratigraphic Section of Subsurface Rocks Based on Oil-Well Logs (Table 2.6-1 UMETCO) ................................................................................................................... 1-82 
Table 1.6-2 Generalized Stratigraphic Section of Exposed Rocks in the Project Vicinity (Table 2.6-2 UMETCO) .......................................................................................................................... 1-83 Table 1.6-3 Modified Mercalli Scale ........................................................................................................ 1-94 Table 1.7-1 Community Types and Expanse Within the Project site Boundary .................................... 1-102 Table 1.7-2 Ground Cover For Each Community Within the Project Site Boundary ............................ 1-102 
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Page vii Revision 5.1B Energy Fuels Resources (USA) Inc. White Mesa Mill Reclamation Plan

Table 1.7-3 Birds Observed in the Vicinity of the White Mesa Project ................................................. 1-105 Table 1.7-4 Endangered, Threatened and Candidate Species in the Mill Area ...................................... 1-106 Table 1.7-5 Species Managed Under Conservation Agreements/Strategies at the Mill Area ................ 1-107 Table 2.3-1 Groundwater Monitoring Constituents Listed in Table 2 of the GWDP ................................ 2-7 Table 2.3-2 Stack Sampling Requirements ................................................................................................ 2-20 Table 2.3-3 Operational Phase Surface Water Monitoring Program ........................................................ 2-21 Table 3.3-1. Reclamation Cover Material Quantity Summary ................................................................. 3-12 

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Page viii Revision 5.1B Energy Fuels Resources (USA) Inc. White Mesa Mill Reclamation Plan

LIST OF FIGURES
Figure Description Page
Figure 1-1 White Mesa Mill Regional Location Map .............................................................................. 1-3 Figure 1-2 White Mesa Mill Location Map .............................................................................................. 1-4 Figure 1.1-1 Wind Rose - 2015 .................................................................................................................... 1-9 Figure 1.4-1 Drainage Map of the Vicinity of the White Mesa Mill. Adapted from: Dames & Moore (1978b), Plate 2.6-5 ............................................................................................................... 1-14 
Figure 1.4-2 Streamflow Summary in the Blanding, Utah Vicinity (Adapted from Dames & Moore (1978b), Plate 2.6-6, updated) ............................................................................................... 1-16 Figure 1.4-3 Surface Water Quality Sampling Stations in the White Mesa Mill Vicinity Prior to Mill Operations (Adapted from Dames & Moore (1978b), Plate 2.6-10) ................................... 1-17 Figure 1.5-1 Generalized Stratigraphy of White Mesa Mill (Adapted from the 2007 ER, Figure 3.7-1) ............................................................................................................................................ 1-24 Figure 1.5-2 Approximate Elevation of Top of Brushy Basin .................................................................. 1-26 Figure 1.5-3 Kriged 1st Quarter, 2016 Water Levels ................................................................................. 1-29 Figure 1.5-4 1st Quarter, 2016 Depths to Perched Water (from Measuring Point) ................................... 1-31 
Figure 1.5-5 1st Quarter, 2016 Perched Zone Saturated Thicknesses ....................................................... 1-32 Figure 1.5-6 Seeps and Springs on USGS Topographic Base, White Mesa (Adapted from HGC,
2014, Figure E.1) ................................................................................................................... 1-34 Figure 1.5-7 Geologic Map on USGS Topographic Base (HGC, 2014 Figure E.2) .............................. 1-36 
Figure 1.5-8 Groundwater (Well or Spring) Sampling Stations in the White Mesa Vicinity (Adapted from the 2007 ER, Figure 3.7-8) ........................................................................................... 1-41 Figure 1.5-9 Ground Water Appropriation Applications Within a 5-Mile Radius ................................... 1-79 Figure 1.6-1 Colorado Plateau Geology Map (Adapted from the 2007 ER, Figure 3.4-1) ...................... 1-81 Figure 1.6-2 White Mesa Millsite Geology of Surrounding Area ............................................................ 1-89 Figure 1.6-3 Seismicity Within 320km of the White Mesa Mill .............................................................. 1-93 Figure 1.6-4 Seismicity Within 200km of the White Mesa Mill .............................................................. 1-96 
Figure 1.6-5 Seismicity of the Western United States 1950 to 1976 ........................................................ 1-97 Figure 1.6-6 Colorado Lineament .............................................................................................................. 1-99 
Figure1.7-1 Vegetation Community Types on the White Mesa Mill Site ............................................. 1-103 Figure 2.3-1 Site Plan Showing Locations of Perched Wells and Piezometers ......................................... 2-6 
Figure 2.3-2 Particulate Monitoring Stations ............................................................................................ 2-15 Figure 2.3-3 Soil Monitoring Stations ....................................................................................................... 2-18 Figure 3.1-1 White Mesa Mill Regional Map Showing Land Position ...................................................... 3-2 Figure 1-1 White Mesa Mill Regional Location Map .............................................................................. 1-3 Figure 1-2 White Mesa Mill Location Map .............................................................................................. 1-4 Figure 1.1-1 Wind Rose - 2015 .................................................................................................................... 1-9 Figure 1.4-1 Drainage Map of the Vicinity of the White Mesa Mill. Adapted from: Dames & Moore
(1978b), Plate 2.6-5 ............................................................................................................... 1-14 Figure 1.4-2 Streamflow Summary in the Blanding, Utah Vicinity (Adapted from Dames & Moore
(1978b), Plate 2.6-6, updated) ............................................................................................... 1-16 Figure 1.4-3 Surface Water Quality Sampling Stations in the White Mesa Mill Vicinity Prior to Mill
Operations (Adapted from Dames & Moore (1978b), Plate 2.6-10) ................................... 1-17 Figure 1.5-1 Generalized Stratigraphy of White Mesa Mill (Adapted from the 2007 ER, Figure 3.7-1) ............................................................................................................................................ 1-24 Figure 1.5-2 Approximate Elevation of Top of Brushy Basin .................................................................. 1-26 Figure 1.5-3 Kriged 1st Quarter, 2016 Water Levels ................................................................................ 1-29 
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Page ix Revision 5.1B Energy Fuels Resources (USA) Inc. White Mesa Mill Reclamation Plan

Figure 1.5-4 1st Quarter, 2016 Depths to Perched Water (from Measuring Point) .................................. 1-31 Figure 1.5-5 1st Quarter, 2016 Perched Zone Saturated Thicknesses ...................................................... 1-32 Figure 1.5-6 Seeps and Springs on USGS Topographic Base, White Mesa (Adapted from HGC, 2014, Figure E.1) ................................................................................................................... 1-34 Figure 1.5-7 Geologic Map on USGS Topographic Base (HGC, 2014 Figure E.2) .............................. 1-36 Figure 1.5-8 Groundwater (Well or Spring) Sampling Stations in the White Mesa Vicinity (Adapted from the 2007 ER, Figure 3.7-8) ........................................................................................... 1-41 
Figure 1.5-9 Ground Water Appropriation Applications Within a 5-Mile Radius ................................... 1-79 Figure 1.6-1 Colorado Plateau Geology Map (Adapted from the 2007 ER, Figure 3.4-1) ...................... 1-81 
Figure 1.6-2 White Mesa Millsite Geology of Surrounding Area ............................................................ 1-89 Figure 1.6-3 Seismicity Within 320km of the White Mesa Mill .............................................................. 1-93 Figure 1.6-4 Seismicity Within 200km of the White Mesa Mill .............................................................. 1-96 Figure 1.6-5 Seismicity of the Western United States 1950 to 1976 ........................................................ 1-97 Figure 1.6-6 Colorado Lineament .............................................................................................................. 1-99 Figure1.7-1 Vegetation Community Types on the White Mesa Mill Site ............................................. 1-103 Figure 2.3-1 Site Plan Showing Locations of Perched Wells and Piezometers ......................................... 2-6 Figure 2.3-2 Particulate Monitoring Stations ............................................................................................ 2-15 Figure 2.3-3 Soil Monitoring Stations ....................................................................................................... 2-18 
Figure 3.1-1 White Mesa Mill Regional Map Showing Land Position ...................................................... 3-2 
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Page x Revision 5.1B Energy Fuels Resources (USA) Inc. White Mesa Mill Reclamation Plan

LIST OF DRAWINGS
REC-0 Title Sheet and Project Location Map REC-1 Plan View of Reclamation Features REC-2 Mill Site and Ore Pad Final Grading Plan REC-3 Sedimentation Basin Detail TRC-1 Interim Fill Grading Plan TRC-2 Compacted Cover Grading Plan
TRC-3 Final Cover Surface Layout TRC-4 Reclamation Cover Erosion Protection
TRC-5 Cover Over Cell 4A & 4B Cross Sections TRC-6 Cover Over Cell 3 Cross Sections TRC-7 Cover Over Cell 2 Cross Sections TRC-8 Cover Over Cell 2 Cross Section TRC-9 Reclamation Cover Details (Sheet 1 of 2) TRC-10 Reclamation Cover Details (Sheet 2 of 2)
LIST OF ATTACHMENTS
Attachment Description
A Technical Specifications for Reclamation of White Mesa Mill Facility, Blanding, Utah.
B Construction Quality Assurance/Quality Control Plan for Reclamation of White Mesa Mill Facility, Blanding, Utah.
C Cost Estimates for Reclamation of White Mesa Mill Facility, Blanding, Utah.
D Radiation Protection Manual for Reclamation Activities
E Existing Cover Design Documents

LIST OF APPENDICES
Appendix Description
A Updated Tailings Cover Design Report, White Mesa Mill, December 2016. MWH, Inc.
B Preliminary Mill Decommissioning Plan, White Mesa Mill, August 2016, MWH, Inc.

Page I-1 Revision 5.1B Energy Fuels Resources (USA) Inc. White Mesa Mill Reclamation Plan

INTRODUCTION

This Reclamation Plan (the “Plan”) has been prepared by Energy Fuels Resources (USA) Inc. (“EFRI”)1 for EFRI’s White Mesa Uranium Mill (the “Mill”), located approximately six miles south of Blanding,
Utah. This Plan presents EFRI’s plans and estimated costs for the reclamation of cells for the tailings management system, and for decommissioning of the Mill and Mill site.2 This Plan is an update to the White Mesa Mill Reclamation Plan Revision 3.2b (Denison, 2011b) approved by the Utah Department of Environmental Quality (UDEQ) Division of Radiation Control (DRC) on January 26, 2011.
Summary of Plan
The uranium and vanadium processing areas of the Mill, including equipment, structures and support facilities, will be decommissioned and disposed of in tailings or buried at the Mill site as appropriate.
Equipment (including tankage and piping, agitation, process control instrumentation and switchgears, and contaminated structures) will be cut up, removed, and buried in tailings prior to final cover placement.
Concrete structures and foundations will be demolished and removed for disposal in tailings or covered in place with soil as appropriate.
The sequence of demolition will proceed so as to allow the maximum use of support areas of the facility, such as the office and shop areas. Uncontaminated or decontaminated equipment to be considered for salvage will be released in accordance with United States Nuclear Regulatory Commission (“NRC”) guidance and in compliance with the conditions of the EFRI’s State of Utah Radioactive Materials License No. UT1900479 (the “License”). As with the equipment for disposal, contaminated soils from the Mill and surrounding areas and ore or feed materials on the Mill site will be disposed of in the tailings cells in accordance with Attachment A, Technical Specifications. An evapotranspiration cover system is proposed
for reclamation of the tailings management system cells.
The estimated reclamation costs for surety are set out in Attachment C. Attachment C will be reviewed and
updated in accordance with License requirements. The reclamation costs are based on the approved Reclamation Plan (Denison, 2011b) and incorporate reclamation work completed to date. The reclamation costs will be updated when this Plan is approved and the Cell 2 cover performance test sections (see Sections 3.0, 5.0, and 6.0) are verified based on requirements outlined in a Stipulation and Consent Agreement (SCA) being developed between EFRI and UDEQ Division of Waste Management and Radiation Control (DWMRC) (see Sections 5.0 and 6.0).
Plan Organization
General site characteristics pertinent to this Plan are contained in Section 1.0. Descriptions of the facility construction, operations and monitoring are given in Section 2.0. The reclamation plan itself, including
descriptions of facilities to be reclaimed and design criteria, is presented in Section 3.0. Section 4.0 provides an overview of the preliminary mill decommissioning plan. Section 5.0 presents how reclamation
would proceed if the “Proposed Cover Design” in Appendix A is not approved. Milestones and schedule commitments for reclamation are outlined in Section 6.0. Design drawings (“Drawings”) are attached to this plan following the main text. Attachments A through D comprise the Technical Specifications,
1 Prior July 25, 2012 EFRI was “Denison Mines (USA) Corp.” and prior to December 16, 2006, Denison was named “International Uranium (USA) Corporation.” 2 Cell 1 was previously referred to as Cell 1-I. It is now referred to as Cell 1.
Page I-2 Revision 5.1B Energy Fuels Resources (USA) Inc. White Mesa Mill Reclamation Plan

Construction Quality Assurance/Quality Control (QA/QC) Plan, Reclamation Cost Estimate, and Radiation Protection Manual for Reclamation Activities. Attachment E provides documents on the approved “Existing Cover Design” including the Titan Environmental 1996 Tailings Cover Design Report
(Attachment E.1) and Technical Specifications (Attachment E.2). Both documents were included in the approved Reclamation Plan Revision 3.2b (Denison, 2011b).
Supporting documents include:
 Updated Tailings Cover Design Report, December 2016. MWH, Inc. (Appendix A)
 Preliminary Mill Decommissioning Plan, August 2016. MWH, Inc. (Appendix B)

As required by Part I.H.11 of previous revisions of the Mill’s State of Utah Ground Water Discharge Permit No. UGW370004 (the “GWDP”), and Part I.H.2 of the current revision of the GWDP, EFRI completed an infiltration and contaminant transport model of the final tailings cover system to demonstrate the long-term ability of the cover to protect nearby groundwater quality (MWH, 2010). The model was updated to address DWMRC comments on the ICTM Report (DRC, 2012; 2013) and to incorporate additional geotechnical and hydrologic data collected as part of field investigations conducted in 2010 and 2012 for cover borrow material and in 2013 for in situ tailings. The updated infiltration modeling results were presented in EFRI (2012b) and EFRI (2015c). The updated cover design is included in the Updated Tailings Cover Design
Report, included as Appendix A to this Reclamation Plan, and includes a monolithic evapotranspiration (ET) cover for the tailings cells. The revised cover design and basis was used for this version of the Plan.
The Reclamation Plan is written assuming Cells 2, 3, 4A, and 4B of the tailings management system will receive tailings to the maximum permitted tailings elevations. Cell 2 is full and partially reclaimed. Cell 3 was used for tailings storage, but currently only receives mill waste and byproduct material in accordance with License provisions. Cell 3 is partially full, and partially reclaimed. Cell 4A is the only cell currently receiving tailings and is partially full. Cell 4B is used for evaporation of process solutions and has not been used for tailings disposal. The Plan has been written assuming Cell 4B will be used in the future for permanent tailings disposal.
If Cell 4B is not used in the future for tailings disposal, Cell 4B can be reclaimed for clean closure. This design is not presented in this report.
A Cell 1 Disposal Area is included in the reclamation design to provide additional storage for permanent disposal of contaminated materials and debris from the Mill site decommissioning and windblown cleanup. The current design is approved per the existing License, however this additional storage area is not currently needed for reclamation. If the Cell 1 Disposal Area is required for storage at the time of final Mill decommissioning, the liner system design will be updated to be the same basic design as the liner system for Cell 4B, including the same basic leak detection system. The revised design would be submitted to the Director prior to construction. After approval of the design by the Director, the Plan and surety would be updated to reflect the approved design.
Revisions to this Reclamation Plan include information related to the updated tailings cover design, as well
as results of data collection and monitoring since Revision 5.0 of this Plan (Denison, 2011c). Revisions to the attachments and appendices of the Reclamation Plan are listed in a tabular format in Table I-1.

Page I-3
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Table I-1 Revisions to Attachments and Appendices in Reclamation Plan
Attachments/ Appendices Reclamation Plan Revision 5.0 (2011) Reclamation Plan Revision 5.1B (20162018)*
Drawings Included in Attachment A Updated and provided as a standalone attachment
Attachment A Plans and Technical Specifications for Reclamation of White Mesa Mill Facility, Blanding, Utah Updated - Technical Specifications for Reclamation of White Mesa Mill Facility, Blanding, Utah
Attachment B Construction Quality Assurance/Quality Control Plan for Reclamation of White Mesa Mill Facility, Blanding, Utah Updated - Construction Quality Assurance/Quality Control Plan for Reclamation of White Mesa Mill Facility, Blanding, Utah
Attachment C Cost Estimates for Reclamation of White Mesa Facility in Blanding, Utah Updated - Cost Estimates for Reclamation of White Mesa Facility in Blanding, Utah Attachment D Radiation Protection Manual for Reclamation Updated - Radiation Protection Manual for Reclamation Activities
Attachment E Not included Added – Existing Cover Design Documents Appendix A Semi-Annual Effluent Report (January through June, 2011), for the Mill Deleted to reduce redundancy (latest report was submitted to DWMRC)
Appendix B Hydrogeology of the Perched Groundwater Zone and Associated
Seeps and Springs Near the White Mesa Uranium Mill Site,
Blanding, Utah, November 12, 2010, prepared by Hydro Geo Chem, Inc. (the “2010 HGC Report”)
Deleted to reduce redundancy (latest report was submitted to DWMRC)
Appendix C The Mill’s Stormwater Best Management Practices Plan, Revision 1.3, June 12, 2008, Emergency Response Plan, Revision 2.1, August 18, 2009, and Spill Prevention, Control, and Countermeasures Plan, 2011.
Deleted to reduce redundancy (latest report was submitted to DWMRC)
Appendix D Updated Tailings Cover Design Report, White Mesa Mill, September 2011. MWH Americas, Inc. Updated and now Appendix A - Updated Tailings Cover Design
Report, White Mesa Mill, December 2016. MWH, Inc. Appendix E National Emission Standards for Hazardous Air Pollutants Radon
Flux Measurement Program, White Mesa Mill Site, 2010, Tellco Environmental
Deleted to reduce redundancy (latest report was submitted to
DWMRC)
Appendix F Semi-Annual Monitoring Report January 1 - June 30, 2010, White
Mesa Mill Meteorological Station, August 19, 2011, McVehil-
Monnett Associates, Inc.
Deleted to reduce redundancy (latest report was submitted to DWMRC).
Appendix G Preliminary Mill Decommissioning Plan, White Mesa Mill, September 2011, MWH Americas, Inc. Updated and now Appendix B - Preliminary Mill
Decommissioning Plan, White Mesa Mill, August 2016, MWH, Inc.
*Main Text and Attachment A were updated from Revision 5.1 to 5.1B (see Section 1).
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1 SITE CHARACTERISTICS

EFRI operates the Mill, which is located approximately six miles south of Blanding, Utah (see Figures 1-1 and 1-2). The Mill was initially licensed by the NRC in May 1980 under NRC Source Material License No. SUA-1358. Upon the State of Utah becoming an Agreement State for uranium mills in August 2004, the Mill’s NRC license was replaced with the Mill’s current State of Utah License and the Mill’s GWDP.
The License was up for timely renewal on March 31, 2007 in accordance with Utah Administrative Code (“UAC”) R313-22-36.3 In accordance with R313-22-36, EFRI submitted an application to the
Director (“Director”) of Utah Department of Environmental Quality, Division of Waste Management and Radiation Control (“DWMRC”)4 on February 27, 2007 for renewal of the License under R313-22-37 (the “2007 License Renewal Application”). Similarly, the GWDP was up for timely renewal on March 8, 2010, in accordance with UAC R317-6-6.7. In 2009, 2012, and 2014, EFRI filed an application to the DWMRC for renewal of the GWDP for under R313-6-6.7.
The Mill is also subject to State of Utah Air Quality Approval Order DAQE-AN1205005-06 (the “Air Approval Order”) which was re-issued on March 2, 2011 and is not up for renewal at this time.
Revision 3.0 of this Plan was submitted to and approved by NRC in 2000. A copy of Revision 3.0 of this Plan was also submitted to the DWMRC as part of the 2007 License Renewal Application. The
most recently approved version of the Reclamation Plan is Revision 3.2b (Denison, 2011a). This version of the Reclamation Plan was approved by DRC under the Mill License on January 26, 2011. A copy of the White Mesa Mill Reclamation Plan, Revision 4.0 was previously submitted to the Director in November 2009 and is on file at the DRC. This version and previous versions of the Reclamation Plan presented design criteria for a multi-layered cover system. Revision 5.0 of this Plan was submitted to the DWMRC in September 2011. EFRI prepared Revision 5.0 of the Plan to incorporate changes since 2009 and to address interrogatories from the DWMRC (DRC, 2010 and 2011). EFRI prepared this Revision 5.1 of the Plan to incorporate changes since 2011 and include updates provided in EFRI response to interrogatories and review comments from DWMRC on Reclamation Plan, Revision 5.0 (Denison, 2012; EFRI, 2012a; EFRI, 2015). EFRI prepared this Revision 5.1B to address select public comments on the White Mesa Mill Groundwater Discharge Permit and Radioactive Materials License.
EFRI responses to public comments were documented in EFRI (2017) and an updated Section 6 to Revision 5.1 of the Plan was provided as an attachment. Attachment A (Technical Specifications) has
also been updated for Revision 5.1B with a minor revision to address public comments. The remaining attachments and appendices do not require revisions and therefore the designation of Revision 5.1 or reference to Revision 5.1 remain to indicate changes have not been made to these components of the Plan.
This Section 1.0 of the Plan incorporates by reference, updates or supplements, information previously submitted in previous environmental analyses performed at the Mill, as described below.

3 The License was originally issued by the NRC as a source material license under 10 CFR Part 40 on March 31, 1980. It was renewed by NRC in 1987 and again in 1997. After the State of Utah became an Agreement State for uranium mills in August 2004, the License was re-issued by the DWMRC as a State of Utah Radioactive Materials License on February 16, 2005, but the remaining term of the License did not change. 4 Prior to 2015, the DWMRC was two separate divisions of UDEQ, the Division of Radiation Control and the Division of Solid and Hazardous Waste.
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A Final Environmental Statement Related to Operation of White Mesa Uranium Project, Energy Fuels
Nuclear, Inc., May, 1979, Docket No. 40-8681 (the “FES”) was prepared by NRC for the original License application in May 1979, which is incorporated by reference into, updated or supplemented by
this Section 1.0. The basis for the FES was the Environmental Report, White Mesa Uranium Project
San Juan County, Utah, dated January 1978, prepared by Dames & Moore (the “1978 ER”). In
addition, the following environmental evaluations and other reports have been performed for the Mill and are incorporated by reference into, updated or supplemented by this Section 1.0:
 the Environmental Assessment (“EA”) prepared for this Plan in February 2000 by NRC (the “2000
EA”);
 the EA prepared in August 2002 by NRC (the “2002 EA”) in connection with a License amendment
issued by NRC authorizing receipt and processing at the Mill of certain alternate feed materials from the Maywood Formerly Utilized Sites Remedial Action Program site in Maywood, New Jersey;
 the Statements of Basis prepared in December 2004 by the State of Utah Department of Environmental Quality (“UDEQ”) DWMRC in connection with the issuance of the GWDP revisions (the “GWDP Statement of Basis”);
 the Environmental Report in Support of the License Renewal Application, State of Utah Radioactive
Materials License No. UT1900479, prepared by Denison Mines (USA), Inc., February 28, 2007 (the “2007 ER”);
 Background Groundwater Quality Reports, Source Assessment Reports (SARs), Pyrite Investigation Report and pH Report as discussed in Section 1.5.4.

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Insert
Figure 1-1 White Mesa Mill Regional Location Map

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Insert
Figure 1-2 White Mesa Mill Location Map

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1.1 Climate and Meteorology
1.1.1 Regional
The climate of southeastern Utah is classified as dry to arid continental. Although varying somewhat with elevation and terrain, the climate in the vicinity of the Mill is semi-arid with normal annual precipitation of
about 13.32 inches (see Table 1.1-1). Most precipitation is in the form of rain with snowfall accounting for about 29 percent of the annual total precipitation. There are two separate rainfall seasons in the region, the
first in late summer and early autumn (August to October) and the second during the winter months (December to March). The mean annual relative humidity is about 44 percent and is normally highest in January and lowest in July. The average annual Class A pan evaporation rate is 68 inches (NOAA, 1977), with the largest evaporation rate typically occurring in July. This evaporation rate is not appropriate for determining water balance requirements for the tailings management system and must be reduced by the Class A pan coefficient to determine the latter evaporation rate. Values of pan coefficients range from 60 to 81 percent. EFRI assumes for water balance calculations an average value of 70 percent to obtain an
annual lake evaporation rate for the Mill area of 47.6 inches. Given the annual average precipitation rate of 13.32 inches, the net evaporation rate is 34.28 inches per year.
The weather in the Blanding area is typified by warm summers and cold winters. The National Weather Service Station in Blanding, Utah is located about 6.25 miles north of the Mill. Data from the station is considered representative of the local weather conditions (1978 ER, Section 2.7.2). The mean annual temperature in Blanding was 50.3°F, based on the Period of Record Summary (1904 - 2006). January is usually the coldest month and July is usually the warmest month (see Table 1.1-2).
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Table 1.1-1 Period of Record General Climate Summary – Precipitation
Station:(420738) BLANDING
From Year=1904 To Year=2006
Precipitation Total Snowfall
Mean High Year Low Year 1 Day Max. >= 0.01 in. >= 0.10 in. >= 0.50 in. >= 1.00 in. Mean High Year
in. in. - in. - in. dd/yyyy or yyyymmdd # Days # Days # Days # Days in. in. -
January 1.39 5.31 1993 0.00 1972 1.49 15/1978 6 4 1 0 10.8 46.9 1979
February 1.21 3.87 1913 0.00 1906 1.50 03/1908 6 3 1 0 7.3 39.7 1913
March 1.05 3.72 1906 0.00 1932 1.13 01/1970 6 3 1 0 4.4 17.9 1970
April 0.87 4.35 1926 0.00 1908 1.33 04/1987 5 2 0 0 1.9 15.2 1957
May 0.71 2.62 1926 0.00 1910 1.26 25/1994 4 2 0 0 0.2 4.0 1978
June 0.45 2.84 1948 0.00 1906 1.40 28/1938 3 1 0 0 0.0 0.0 1905
July 1.15 3.55 1914 0.00 1920 1.74 21/1985 6 3 1 0 0.0 2.5 1906
August 1.38 4.95 1968 0.03 1985 4.48 01/1968 7 4 1 0 0.0 0.0 1905
September 1.28 4.80 1927 0.00 1912 1.85 29/1905 5 3 1 0 0.0 3.5 1905
October 1.45 7.01 1916 0.00 1915 2.00 19/1908 5 3 1 0 0.3 6.0 1984
November 1.05 4.17 1905 0.00 1929 2.79 27/1919 4 3 1 0 3.3 19.0 1931
December 1.33 6.84 1909 0.00 1917 3.50 23/1909 5 3 1 0 9.8 55.0 1909
Annual 13.32 24.42 1909 4.93 1956 4.48 19680801 62 36 7 1 38.2 121.0 1909
Winter 3.93 11.95 1909 0.29 1964 3.50 19091223 17 10 2 0 27.9 100.2 1979
Spring 2.63 7.77 1926 0.10 1972 1.33 19870404 15 8 1 0 6.5 28.7 1970
Summer 2.98 6.90 1987 0.12 1960 4.48 19680801 16 8 2 0 0.0 2.5 1906
Fall 3.78 8.70 1972 0.50 1917 2.79 19191127 14 9 2 1 3.7 19.5 1908
Table updated on Jul 28, 2006 For monthly and annual means, thresholds, and sums: Months with 5 or more missing days are not considered Years with 1 or more missing months are not considered Seasons are climatological not calendar seasons
Winter = Dec., Jan., and Feb. Spring = Mar., Apr., and May
Summer = Jun., Jul., and Aug. Fall = Sep., Oct., and Nov.
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Table 1.1-2 Period of Record General Climate Summary - Temperature
Station:(420738) BLANDING
From Year=1904 To Year=2006
Monthly Averages Daily Extremes Monthly Extremes Max. Temp. Min. Temp.
Max. Min. Mean High Date Low Date Highest Mean Year Lowest Mean Year >= 90 F <= 32 F <= 32 F <= 0 F
F F F F dd/yyyy or yyyymmdd F dd/yyyy or yyyymmdd F - F - # Days # Days # Days # Days
January 39.1 17.2 28.2 63 31/2003 -20 12/1963 40.2 2003 12.6 1937 0.0 6.2 30.3 1.8
February 44.9 22.3 33.6 71 28/1906 -23 08/1933 44.2 1995 18.8 1933 0.0 2.0 26.1 0.7
March 52.7 27.8 40.3 86 31/1906 -3 28/1975 51.0 2004 33.0 1948 0.0 0.3 23.4 0.0
April 62.2 34.3 48.2 88 19/1905 10 24/1913 56.9 1992 39.4 1928 0.0 0.0 12.4 0.0
May 72.3 42.1 57.2 98 31/2002 15 16/1910 65.0 2000 50.1 1917 0.4 0.0 2.7 0.0
June 83.3 50.7 67.0 110 22/1905 28 03/1908 75.3 2002 61.2 1907 6.3 0.0 0.2 0.0
July 88.7 57.9 73.3 109 19/1905 36 15/1934 81.1 2003 66.3 1916 15.1 0.0 0.0 0.0
August 86.2 56.2 71.2 106 18/1905 38 23/1968 77.2 1926 65.6 1968 9.0 0.0 0.0 0.0
September 78.2 48.3 63.3 100 01/1905 20 26/1908 70.2 2001 56.6 1922 1.3 0.0 0.3 0.0
October 66.0 38.0 52.0 99 08/1905 10 30/1971 59.6 2003 44.6 1969 0.1 0.0 6.6 0.0
November 51.4 26.7 39.1 74 04/1905 -7 25/1931 47.3 1999 32.4 1952 0.0 0.4 23.6 0.1
December 41.2 19.2 30.2 65 03/1929 -13 23/1990 39.4 1980 19.4 1931 0.0 4.5 30.0 0.9
Annual 63.8 36.7 50.3 110 19050622 -23 19330208 55.1 2003 47.2 1932 32.2 13.5 155.6 3.4
Winter 41.7 19.5 30.7 71 19060228 -23 19330208 37.5 1907 19.3 1933 0.0 12.7 86.4 3.3
Spring 62.4 34.7 48.6 98 20020531 -3 19750328 54.8 2004 43.6 1909 0.4 0.3 38.5 0.0
Summer 86.0 54.9 70.5 110 19050622 28 19080603 76.4 2002 67.4 1941 30.4 0.0 0.2 0.0
Fall 65.2 37.7 51.4 100 19050901 -7 19311125 58.3 1926 47.8 1912 1.4 0.4 30.5 0.1
Table updated on Jul 28, 2006 For monthly and annual means, thresholds, and sums: Months with 5 or more missing days are not considered Years with 1 or more missing months are not considered Seasons are climatological not calendar seasons
Winter = Dec., Jan., and Feb. Spring = Mar., Apr., and May
Summer = Jun., Jul., and Aug. Fall = Sep., Oct., and Nov.

Winds are usually light to moderate in the area, although occasional stronger winds may occur in the late winter and spring. The predominant winds are from the north through north-east (approximately 30 percent
of the time) and from the south through south-west (about 25 percent of the time). Winds are generally less than 15 mph, with wind speeds greater than 25 mph occurring less than one percent of the time (1978 ER,
Section 2.7.2). As an element of the pre-construction baseline study and ongoing monitoring programs, the Mill operates an onsite meteorological station, described below. Further details about weather and climate conditions are provided in the 1978 ER (Section 2.7) and in the FES (Section 2.1).
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1.1.2 Storms (FES Section 2.1.4, updated)
Thunderstorms are frequent during the summer and early fall when moist air moves into the area from the Gulf of Mexico. Related precipitation is usually light, but a heavy local storm can produce over an inch of
rain in one day. The maximum 24-hour precipitation reported to have fallen during period 1904-2006 at Blanding was 4.48 inches (11.36 cm). Hailstorms are uncommon in this area. Although winter storms may
occasionally deposit comparable amounts of moisture, maximum short-term precipitation is usually associated with summer thunderstorms.
Tornadoes have been observed in the general region, but they occur infrequently. Strong winds can occur in the area along with thunderstorm activity in the spring and summer. The Mill area is susceptible to occasional dust storms, which vary greatly in intensity, duration, and time of occurrence. The basic conditions for blowing dust in the region are created by wide areas of exposed dry topsoil and strong, turbulent winds. Dust storms usually occur following frontal passages during the warmer months and are occasionally associated with thunderstorm activities.
1.1.3 On Site
On-site meteorological monitoring at the Mill was initiated in early 1977 and continues today. The original purpose of the meteorological monitoring program was to document the regional atmospheric baseline and to provide data to assist in assessing potential air quality and radiological impacts arising from operation of the Mill.
After the Mill construction was completed, the monitoring programs were modified to facilitate the assessment of Mill operations. The current meteorological monitoring program includes data collection for wind speed, wind direction, atmospheric stability according to the standard Pasquill scheme (via measurements of deviations in wind direction, referred to as sigma-theta), and precipitation as either rain or snow. The recorded on-site meteorological conditions are reported to EFRI on a semi-annual basis and
are described in semi-annual reports maintained at the Mill. Figure 1.1-1 shows the windrose for the Mill site for January – December 2015, the most recent full year of compiled meteorological data.

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INSERT
Figure 1.1-1 Wind Rose - 2015

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1.2 Topography
The following text is reproduced from Section 2.3 of the FES.
The site is located on a "peninsula" platform tilted slightly to the south-southeast and surrounded on almost all sides by deep canyons, washes, or river valleys. Only a narrow neck of land connects this platform with
high country to the north, forming the foothills of the Abajo Mountains. Even along this neck, relatively deep stream courses intercept overland flow from the higher country. Consequently, this platform (White
Mesa) is well protected from runoff flooding, except for that caused by incidental rainfall directly on the mesa itself. The land on the mesa immediately surrounding the Mill site is relatively flat.
1.3 Archeological Resources
The following discussion of archeological sites is adapted from Section 2.5.2.3 of the FES.
1.3.1 Archeological Sites
Archeological surveys of portions of the entire Mill site were conducted between the fall of 1977 and the
spring of 1979. The total area surveyed contained parts of Section 21, 22, 27, 28, 32, and 33 of T37S, R22E, and encompassed 2,000 acres (809 ha), of which 200 acres (81 ha) are administered by the U. S.
Bureau of Land Management (“BLM”) and 320 acres (130 ha) are owned by the State of Utah. The remaining acreage is privately owned. During the surveys, 121 archeological sites were recorded and all were determined to have an affiliation with the San Juan Anasazi who occupied this area of Utah from 0 A.D. to 1300 A.D. All but 22 of the sites were within the Mill site boundaries.
Table 1.3-1, adapted from FES Table 2.18, summarizes the recorded sites according to their probable temporal positions. The dates of occupation are the best estimates available, based on professional experience and expertise in the interpretation of archeological evidence. Available evidence suggests that settlement on White Mesa reached a peak in perhaps 800 A.D. Occupation remained at approximately that level until sometime near the end of Pueblo II or in the Pueblo II/Pueblo III transition period. After this
period, the population density declined sharply, and it may be assumed that the White Mesa area was, for the most part, abandoned by about 1250 A.D.
Archeological test excavations were conducted by the Antiquities Section, Division of State History, in the spring of 1978, on 20 sites located in the area later to be occupied by Cells 2, 3 and 4 (now comprised of Cell 4A and Cell 4B). Of these sites, 12 were deemed by the State Archeologist to have significant National Register potential and four to have possible significance. The primary determinant of significance in this study was the presence of structures, though storage features and pottery artifacts were also common.
In the fall of 1978, a surface survey was conducted on much of the previously unsurveyed portions of the proposed Mill site. Approximately 45 archeological sites were located during this survey, some of which are believed to be of equal or greater significance than any sites from the earlier study. Determination of the actual significance of all untested sites would require additional field investigation.

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Table 1.3-1 Distribution of Recorded Sites According to Temporal Position
Temporal position Approximate dates (A.D.)a Number of sites
Basket Maker III 575-750 2
Basket Maker III/Pueblo I 575-850 27
Pueblo I 750-850 12
Pueblo I/Pueblo II 850-950 13
Pueblo II 950-1100 14
Pueblo II/Pueblo III 1100-1150 12
Pueblo III 1150-1250 8
Pueblo II+ B
Multicomponent C 3
Unidentified D 14
a Includes transitional periods.
b Although collections at these locations were lacking in diagnostic material, available evidence indicates that the site would have been used or occupied no earlier than 900 A.D. and possibly later.
c Ceramic collections from each of these sites indicate an occupation extending from Pueblo I through Pueblo II and into Pueblo III.
d These sites did not produce evidence strong enough to justify any identification. Source: Adapted from Dames & Moore (1978b) (1978 ER), Table 2.3-2, FES, Page 2-20, Table 2.18, and from supplementary reports on project archeology.
Pursuant to 10 CFR Part 63.3, the NRC submitted on March 28, 1979, a request to the Keeper of the National Register for a determination of eligibility for the area which had been surveyed and tested. The area contained 112 archeological sites and six historical sites. The determination by the Keeper of the National Register on April 6, 1979, was that the White Mesa Archeological District is eligible for inclusion in the National Register.
1.3.2 Current Status of Excavation
Archeological investigations for the entire Mill site and for Cells 1 through Cell 4 (now comprised of Cell 4A and Cell 4B) were completed with the issuance of four separate reports covering 30 sites, excluding re-
investigations. (Lindsay 1978, Nielson 1979, Casjens et al 1980, and Agenbroad et al 1981).
The sites reported as excavated are as follows:
6380 6394 6437
6381 6395 6684 6384 6396 6685 6385 6397 6686
6386 6403 6697
6387 6404 6698
6388 6420 6699
6391 6429 6754 6392 6435 6757 6393 6436 7754

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Sites for which excavation has not been required are:
6379 6441 7658 7690 6382 6443 7659 7691 6405 6444 7660 7693
The sites remaining to be excavated or investigated for significance are:
6408 6445 7657 7687 6421 6739 7661 7689 6427 6740 7665 7696 6430 7653 7668 7700 6432 7655 7675 7752 6439 7656 7684 7876
The following site was excavated in 2009 in connection with the construction of the new decontamination pad at the Mill:
42Sa27732
The following sites were excavated in the summer of 2010 in connection with the construction of Cell 4B and a final report was prepared:

42Sa6391 42Sa6392 42Sa6393 42Sa6397

42Sa6431 42Sa6757 42Sa8014 42Sa28128

42Sa28129 42Sa28130 42Sa28131 42Sa28132

42Sa28133 42Sa28134
1.4 Surface Water
The following description of undisturbed surface water conditions is adapted from Section 2.6.1 of the FES and Section 3.7.1 of the 2007 ER and is updated to include current data.
The Mill was designed and constructed to prevent run-on or runoff of stormwater by a) diverting runoff
from precipitation on the Mill site to the tailings management cells; and b) diverting runoff from surrounding areas away from the Mill site. In addition to these designed control features, the facility has
developed a Stormwater Best Management Practices Plan, Revision 1.5: May 2, 2016 (EFRI, 2016) which describes site drainage features and the best management practices employed to assure appropriate control
and routing of stormwater.
1.4.1 Surface Water Description (FES Section 2.6.1.1)
The Mill site is located on White Mesa, a gently sloping (1 percent SSW) plateau that is physically defined by the adjacent drainages which have cut deeply into regional sandstone formations. There is a small drainage area of approximately 62 acres (25 ha) above the site that could yield surface runoff to the site. Runoff from the Mill area is conducted by the general surface topography to either Westwater Creek, Corral
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Creek, or to the south into an unnamed branch of Cottonwood Wash. Local porous soil conditions, topography and low acreage annual rainfall of 13.32 inches cause these streams to be intermittently active, responding to spring snowmelt and local rainstorms (particularly thunderstorms). Surface runoff from
approximately 384 acres (155 ha) of the Mill site drains westward and is collected by Westwater Creek, and runoff from another 384 acres (155 ha) drains east into Corral Creek. The remaining southern and
southwestern portions of the site drain indirectly into Cottonwood Wash (Dames & Moore, 1978b, p. 2-143). The site and vicinity drainages carry water only on an intermittent basis. The major drainages in the project vicinity are depicted on Figure 1.4-1 and their drainages tabulated in Table 1.4-1. Total runoff from the site area (total yield per watershed area) is estimated to be less than 0.5 inch (1.3 cm) annually (Dames & Moore, 1978b, p. 2-143).
There are no perennial surface waters on or in the vicinity of the Mill site. This is due to the gentle slope of the mesa on which the site is located, the low average annual rainfall of 13.32 inches (33.8 cm) per year at Blanding, local soil characteristics and the porous nature of local stream channels. Prior to construction, three small ephemeral catch basins were present on the site to the northwest and northeast of the Mill site.
Corral Creek is an intermittent tributary to Recapture Creek. The drainage area of that portion of Corral Creek above and including drainage from the eastern portion of the site is about 5 square miles (13 km2).
Westwater Creek is also an intermittent tributary of Cottonwood Wash. The Westwater Creek drainage basin covers nearly 27 square miles (70 km2) at its confluence with Cottonwood Wash 1.5 miles (2.5 km) west of the Mill site. Both Recapture Creek and Cottonwood Wash are similarly intermittently active, although they carry water more often and for longer periods due to their larger watershed areas. They both drain to the south and are tributaries of the San Juan River. The confluences of Recapture Creek and Cottonwood Wash with the San Juan River are approximately 18 miles (29 km) south of the Mill site. The San Juan River, a major tributary for the upper Colorado River, has a drainage of 23,000 square miles (60,000 km2) measured at the USGS gauge to the west of Bluff, Utah (Dames & Moore, 1978b, p. 2-130).

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Insert
Figure 1.4-1 Drainage Map of the Vicinity of the White Mesa Mill. Adapted from: Dames & Moore (1978b), Plate 2.6-5

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Table 1.4-1 Drainage Areas of Project Vicinity and Region

Basin description Drainage area
km2 sq. miles
Corral Creek at confluence
with Recapture Creek
15.0 5.8
Westwater Creek at confluence with Cottonwood Wash 68.8 26.6
Cottonwood Wash at USGS gage west of project site <531 <205
Cottonwood Wash at confluence with San Juan River <860 <332
Recapture Creek at USGS gage 9.8 3.8
Recapture Creek at confluence with San Juan River <518 <200
San Juan River at USGS gage
downstream at Bluff, Utah
<60,000 <23,000
Source: Adapted from Dames & Moore (1978b), Table 2.6-3
Storm runoff in these streams is characterized by a rapid rise in the flow rates, followed by rapid recession primarily due to the small storage capacity of the surface soils in the area. For example, on August 1, 1968, a flow of 20,500 cfs (581 m3/sec) was recorded in Cottonwood Wash near Blanding. The average flow for that day, however, was only 4,340 cfs (123 m3/sec). By August 4, the flow had returned to 16 cfs (0.5 m3/sec) (Dames & Moore, 1978b, p. 2-135). Monthly streamflow summaries updated from Figure 2.4 of
the FES are presented in Figure 1.4-2 for Cottonwood Wash, Recapture Creek and Spring Creek. Flow data are not available for the two smaller water courses closest to the Mill site, Corral Creek and Westwater
Creek, because these streams carry water infrequently and only in response to local heavy rainfall and snowmelt, which occurs primarily in April, August, and October. Flow typically ceases in Corral and Westwater Creeks within 6 to 48 hours after precipitation or snowmelt ends.
1.4.2 Surface Water Quality as of the Date of the FES (FES Section 2.6.1.2)
Sampling of surface water quality in the Mill vicinity began in July 1977 and continued through March 1978. Baseline data describe and evaluate existing conditions at the Mill site and vicinity. Sampling of the temporary on-site surface waters (two catch basins) was attempted, but without success because of the lack of naturally occurring water in these basins. Sampling of ephemeral surface waters in the vicinity was possible only during major precipitation events, as these streams are normally dry. See FES Section 2.6.1.2.
Surface water sample sites used prior to Mill operations are presented on Figure 1.4-3. The water quality values obtained for these sample sites are given in Dames & Moore (1978b) Table 2.6-7, and FES Table
2.22. Water quality samples were collected during the spring at several intermittently active streams that drain the Mill area. These streams include Westwater Creek (S1R, S9) Corral Creek below the small irrigation pond (S3R), the junction of Corral Creek and Recapture Creek (S4R), and Cottonwood Creek (S8R). Samples were also taken from a surface pond southeast of the Mill (S5R). No samples were taken at S2R on Corral Creek or at the small wash (S6R) located south of the site.

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Insert
Figure 1.4-2 Streamflow Summary in the Blanding, Utah Vicinity (Adapted from Dames & Moore (1978b), Plate 2.6-6, updated)

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Insert
Figure 1.4-3 Surface Water Quality Sampling Stations in the White Mesa Mill Vicinity Prior to Mill Operations (Adapted from Dames & Moore (1978b), Plate 2.6-10)

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Natural surface water quality in the vicinity of the Mill is generally poor. Waters in Westwater Creek (S1R and S9) were characterized by high total dissolved solids (TDS; mean of 674 mg/liter) and sulfate levels (mean 117 mg of SO4 per liter). The waters were typically hard (total hardness measured as CaCO3; mean
223 mg/liter) and had an average pH of 8.25. Estimated water velocities for Westwater Creek averaged 0.3 fps (0.08 m/sec) at the time of sampling.
Samples from Cottonwood Creek (S8R) at the time of the FES were generally similar in quality to Westwater Creek water samples, although the TDS and sulfate levels were lower (TDS averaged 264 mg/liter; SO4 averaged 40 mg/liter) during heavy spring flow conditions (80 fps [24 m/sec] water velocity).
The concentrations of TDS increased downstream in Corral Creek, averaging 3,180 mg/liter at S3R and 6,660 mg/liter (one sample) at S4R. Total hardness averaged in excess of 2,000 mg/liter, and pH values were slightly alkaline. Estimated water velocities in Corral Creek were typically less than 0.1 fps (0.03 m/sec) during sampling.
The spring sample collected at the surface pond south of the Mill site (S5R) indicated a TDS concentration of less than 300 mg/liter. The water was slightly alkaline with moderate dissolved sulfate levels averaging
42 mg/liter.
During heavy runoff, the concentration of total suspended solids in these streams increased sharply to values in excess of 1,500 mg/liter (FES, Table 2.22). High concentrations of certain trace elements were measured in some sampling areas. Levels of mercury (total) were reported as high as 0.002 mg/liter (S3R, 7/25/77; S8R, 7/25/77). Total iron measured in the pond (S5R, 11/10/77) was 9.4 mg/liter. The FES concluded (Section 2.6.1.2 of the FES) that these values appear to reflect groundwater quality in the vicinity and are probably due to evaporative concentration and not due to human perturbation of the environment. Corral Creek was also sampled at the time of the FES, but it has not been included in subsequent operational monitoring at the Mill. See Table 2.22 of the FES for sampling results for Corral Creek.
1.4.3 Surface Water Background Quality
Surface water samples are collected for Cottonwood Wash and Westwater Creek as part of the Mill’s
operational monitoring program. Samples were also taken prior to Mill construction and summarized in the FES as well as at various times and for various parameters since then. A comparison of the FES results and subsequent sampling results during Mill operation is shown in Table 1.4-2. Surface water values over time for both Cottonwood Wash and Westwater Creek are included in the Semi-Annual Effluent Reports.

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Table 1.4-2 Summary of FES and Subsequent Sampling Results For Cottonwood Wash and Westwater Creek
Parameter FES Cottonwood Wash (7/25/77-3/28/78)*
Cottonwood Wash (9/16/81-6/20/09)
Cottonwood Wash 2010
Cottonwood Wash 2011
Cottonwood Wash 2012
Cottonwood Wash 2013
Cottonwood Wash 2014
Cottonwood Wash 2015
FES Westwater Creek (11/10/77-3/23/78)*
Westwater Creek (2/22/82-6/20/09)
Westwater Creek 2010
Westwater Creek 2011
Westwater Creek 2012
Westwater Creek 2013
Westwater Creek 2014
Westwater Creek 2015
Field Specific Conductivity (µmhos/cm)
240-550 - 16123 16253 16003
5134
6224
2594
7854
14025 16315
2306
15687
6748
2018

163410 653.811 70311 14011
167712 68313 78513 30413
165814
74015 79215
47215
18015
320-620 - 17073 17823 16503
16454
12345 8066
- 28311 41213 137214
25715
Field pH 6.6 to 8.1 - 6.423 6.673
8.164
8.204
7.944
7.214
7.045 6.845
7.796
7.067
7.848
7.958

7.2510 7.9811 7.7211
8.7411
7.1812 7.8113 8.1713
8.7713
7.3014
6.8615
7.4315
8.3015
7.2615
7.6-8.3 - 7.033 6.983
8.164
6.675
7.606 - 7.4511 8.6413 7.2414
7.5515

Dissolved Oxygen - - - - - - - - - - - - - - - -
Temperature (ºC) 6.0 to 35 - 16.173 15.853 15.053
3.194
9.704
21.374
4.504
16.505 15.915
12.606
16.287
9.808
18.078
16.2810 8.1111 5.4811 16.9011
16.9012 13.6113 18.9213 17.6513
16.4014
6.7515
16.1915
22.3915
12.5915
3-14 - 17.993 17.213 10.13
-0.034
15.135
10.686 - 21.1611 17.0013 17.5214
17.6915
Estimated Flow m/hr 0.4 to 80 - - - - - - - 0.28 to 39.9 - - - - - - -
pH 7.5 to 8.21 - 7.473 7.555
8.045
- - - - 8.2 to 8.35 - 7.383 7.205 - - - -
Redox Potential 210 to 260 - 5013 4923 4415 4217 25910 23812 18914 186 to 220 - 4013 3423 - - - - 20114
Alkalinity (as CaCO3) 134 to 195 76 to 257* - - - - - - 147 to 229 230* - - - - - -
Hardness, total (as CaCO3) 148 to 195 - - - - - - - 117 to 289 - - - - - - -
Carbonate (as CO3) 0.0 ND ND3 65 mg/L ND7 ND10 ND12 ND14 0.0 to 2.3 ND ND3 ND5 - - - ND14
Bicarbonate (as HCO3) - 316 mg/L 3403 mg/L 3165 mg/L 3267 mg/L 28010 mg/L 25112 mg/L 27114 mg/L - 465 mg/L 450 mg/L 3305 mg/L - - - 35914 mg/L
Aluminum, dissolved 0.16 to 3.0 - - - - - - - 0.1 to 4.0 - - - - - - - Ammonia (as N) <0.1 to 0.16 ND ND3 ND5 ND7 ND10 ND12 0.51214 mg/L <0.1 to 0.75 ND 0.503 mg/L 0.065 mg/L - - - 0.12314 mg/L
Arsenic, total 0.02 to 0.041 - - - - - - - 0.007 to 0.037 - - - - - - -
Arsenic, Dissolved - ND ND3 ND5 ND7 ND10 ND12 ND14 - ND ND3 12.35 ug/L - - - ND14 Barium, total 0.2 to 1.2 - - - - - - - <0.2 to 0.81 - - - - - - - Beryllium, dissolved - ND ND3 ND5 ND7 ND10 ND12 ND14 - ND ND3 0.915 ug/L - - - ND14
Boron, total <0.1 to 0.2 - - - - - - - <0.1 to 0.1 - - - - - - -
Cadmium, total <0.002 to 0.01 - - - - - - - <0.002 to 0.006 - - - - - - -
Cadmium, dissolved - ND ND3 ND5 ND7 ND10 ND12 ND14 - ND ND3 0.95 ug/L - - - ND14 Calcium, dissolved 54 to 178 90.3 mg/L 92.23 mg/L 94.2 – 95.45 mg/L 1017 mg/L 87.910 mg/L 99.712 mg/L 11114 mg/L 76 to 172 191 mg/L 1793 mg/L 2475 mg/L - - - 15014 mg/L
Calcium - 37 to 71* - - - - - - - 94.5* - - - - - -
Chlorine - - - - - - - - - 41* - - - - - - Chloride 6 to 24 5 to 33.3* 1123 mg/L 113 - 1345 mg/L 1497 mg/L 11810 mg/L 12812 mg/L 13314 mg/L 17 to 125 76* 403 mg/L 215 mg/L - - - 32.614 mg/L
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Table 1.4-2 Summary of FES and Subsequent Sampling Results For Cottonwood Wash and Westwater Creek
Parameter FES Cottonwood Wash (7/25/77-3/28/78)*
Cottonwood Wash (9/16/81-6/20/09)
Cottonwood Wash 2010
Cottonwood Wash 2011
Cottonwood Wash 2012
Cottonwood Wash 2013
Cottonwood Wash 2014
Cottonwood Wash 2015
FES Westwater Creek (11/10/77-3/23/78)*
Westwater Creek (2/22/82-6/20/09)
Westwater Creek 2010
Westwater Creek 2011
Westwater Creek 2012
Westwater Creek 2013
Westwater Creek 2014
Westwater Creek 2015
Sodium - 18 to 104* - - - - - - - 160.5* - - - - - -
Sodium, dissolved 21 to 66 205 mg/L 2143 mg/L 227 - 2295 mg/L 2477 mg/L 21710 mg/L 22712 mg/L 25114 mg/L 31 to 60 196 mg/L 1603 mg/L 1125 mg/L - - - 13914 mg/L
Silver, dissolved 0.002 to <0.005 ND ND3 ND5 ND7 ND10 ND12 ND14 <0.005 to 0.006 ND ND3 ND5 - - - ND14
Sulfate, dissolved (as SO4) 39.7 to 564 57 to 245* 3893 mg/L 389 - 3945 mg/L 3567 mg/L 40310 mg/L 41712 mg/L 44214 mg/L 85 to 163 408* 6073 mg/L 3545 mg/L - - - 39214 mg/L
Vanadium, dissolved <0.005 to <0.018 ND ND3 ND5 ND7 ND10 ND12 ND14 <0.001 to 0.008 ND ND3 34 ug/L5 - - - ND14
Manganese, dissolved 0.02 to 0.84 ND ND3 ND5 ND7 ND10 ND12 ND14 0.03 to 0.60 37 ug/L 873 ug/L 2685 ug/L - - - 0.17114 mg/L
Chromium, total <0.01 to 0.14 - - - - - - - <0.01 to 0.60 - - - - - - -
Chromium, dissolved - ND ND3 ND5 ND7 ND10 ND12 ND14 - ND ND3 ND5 - - - ND14 Copper, total 0.005 to 0.09 - - - - - - - <0.005 to 0.05 - - - - - - - Copper, dissolved - ND ND3 ND5 ND7 ND10 ND12 ND14 - ND ND3 165 ug/L - - - ND14
Cobalt, dissolved - ND ND3 ND5 ND7 ND10 ND12 ND14 - ND ND3 ND5 - - - ND14
Fluoride, dissolved 0.2 to 0.36 0.4 mg/L 0.383 mg/L 0.34 - 0.385 mg/L 0.387 mg/L 0.41710 mg/L ND12 0.31814 mg/L 0.2 to 0.4 0.7 mg/L 0.603 mg/L 0.545 mg/L - - - 0.42414 mg/L
Iron, total 5.9 to 150 - - - - - - - - - - Iron, dissolved 0.11 to 1.9 ND ND3 ND - 535 ND7 ND10 ND12 ND14 0.17 to 2.5 89 ug/L 563 ug/L 45405 ug/L - - - ND14
Lead, total 0.05 to 0.14 - - - - - - <0.05 to 0.1 - - - - - - -
Lead, dissolved - ND ND3 ND5 ND7 ND10 ND12 ND14 - ND ND3 41.45 ug/L - - - ND14 Magnesium - 10.5 to 38.1* - - - - - - - 23.5* - - - - - - Magnesium, dissolved 17 to 28 25 mg/L 24.83 mg/L 25.25 mg/L 27.77 mg/L 23.610 mg/L 29.012 mg/L 27.414 mg/L 13 to 26 - 44.73 mg/L 34.75 mg/L - - - 34.014 mg/L
Mercury, total 0.00006 to 0.002 - - - - - - - <0.00003 to <0.0005 - - - - - - -
Mercury, dissolved - ND ND3 ND5 ND7 ND10 ND12 ND14 - ND ND3 ND5 - - - ND14 Molybdenum, dissolved 0.002 to 0.10 ND ND3 ND5 ND7 ND10 ND12 ND14 0.002 to 0.006 ND 293 ug/L ND5 - - - ND14
Nitrate (as N) 0.12 to 1.77 0.1 mg/L ND3 0.1 mg/L5 ND7 ND10 ND12 ND14 <0.05 to 0.05 0.8 mg/L ND3 ND5 - - - ND14
Nickel, dissolved - ND ND3 ND5 ND7 ND10 ND12 ND14 - - ND3 29 ug/L5 - - - ND14 Phosphorus, total (as P) 0.05 to 3.2 - - - - - - - 0.05 to 0.88 - - - - - - -
Potassium, dissolved 1.2 to 6.9 1.77 to 4 mg/L 5.773 mg/L 5.9 – 6.05
mg/L 6.277 mg/L 5.5310 mg/L 6.1812 mg/L 5.9114 mg/L 2.0 to 3.2 4.05* 6.573 mg/L 3.95 mg/L - - - 1.9814 mg/L Selenium, dissolved <0.005 to 0.08 ND ND3 ND5 ND7 ND10 ND12 ND14 <0.005 to 0.003 ND ND3 ND5 - - - ND14
Silica, dissolved (as SiO2) 8 to 18 - - - - - - - 7 to 11 - - - - - - -
Strontium, total 0.34 to 0.64 - - - - - - - 0.44 to 0.76 - - - - - - -
Thallium, dissolved - ND ND3 ND5 ND7 ND10 ND12 ND14 - ND ND3 ND5 - - - ND14 Tin, dissolved - - ND3 ND5 ND7 ND10 ND12 ND14 - ND ND3 ND5 - - - ND14
Uranium, total 0.004 to 0.27 - - - - - - - 0.006 to 0.004 - - - - - - -
Uranium, dissolved 0.004 to 0.015 8.42 ug/L 8.243 ug/L 7.87 - 8.685 ug/L 8.177 ug/L 8.9510 ug/L 9.6212 ug/L 9.1214 mg/L 0.002 to 0.015 15.1 ug/L 46.63 ug/L 6.645 ug/L - - - 2.1014 mg/L Zinc, dissolved 0.008 to 0.06 ND ND3 ND5 ND7 ND10 ND12 ND14 0.04 to 0.12 ND 223 ug/L 285 ug/L - - - ND14 Total Organic Carbon 7 to 12 - - - - - - - 6 to 16 - - - - - - -
Chemical Oxygen
Demand
61 to 163 - - - - - - - 23 to 66 - - - - - - -
Oil and Grease 2 - - - - - - - 1 - - - - - - -
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Table 1.4-2 Summary of FES and Subsequent Sampling Results For Cottonwood Wash and Westwater Creek
Parameter FES Cottonwood Wash (7/25/77-3/28/78)*
Cottonwood Wash (9/16/81-6/20/09)
Cottonwood Wash 2010
Cottonwood Wash 2011
Cottonwood Wash 2012
Cottonwood Wash 2013
Cottonwood Wash 2014
Cottonwood Wash 2015
FES Westwater Creek (11/10/77-3/23/78)*
Westwater Creek (2/22/82-6/20/09)
Westwater Creek 2010
Westwater Creek 2011
Westwater Creek 2012
Westwater Creek 2013
Westwater Creek 2014
Westwater Creek 2015
Total Suspended Solids 146 to 2,025 0 to 24,300* 19 - 58804 mg/L ND - 88606 mg/L 15 – 12608 mg/L 6 – 2180010,11
mg/L 12 – 750012 mg/L 28 – 260015 mg/L 12 to 1940 <4 to 1,190* 134 mg/L ND6 - - - 439015 mg/L
Total Dissolved
Solids
253 to 944 10 to 1,130* 202 – 9003,4
mg/L
425 – 10305,6
mg/L
224 – 10407,8
mg/L
287 – 99610,11
mg/L
271 – 96812
mg/L
218 – 102014,15
mg/L
496 to 969 93-1370* 1140 –
12703,4 mg/L
8535 - - - 337 –
89614,15 mg/L

Gross Alpha - <1.0E-9 to 9.0E-7* - - - - - - 1E-10 to 4.5E-9 <1.0E-9* - - - - - -
Gross Alpha minus Rn & U - - ND – 2.03,4 pCi/L ND5,6 ND – 3.17,8 pCi/L ND – 10.810,11
pCi/L
ND – 13.012,13
pCi/L ND – 14.814,15
pCi/L - - ND3,4 pCi/L ND - 0.55 pCi/L - 20.411 pCi/L 7.513 pCi/L ND – 2.214,15
pCi/L Gross Beta - - - - - - - 0 to 8E-9 - - - - - - - Uranium, dissolved 1.02E-9 to 2.79E-9 2.23E-9 to 6.02E-6* 0.0060 – 0.01163,4
mg/L
0.00787 – 0.01025,6 mg/L
0.0017 - 0.008177,8
mg/L
0.0084 - 0.009010,11
mg/L
ND - 0.00962012,13
mg/L
0.0022 – 0.0091214,15
mg/L
1.03E-9 to 1.35E-9 8.8E-7* 0.0057 – 0.04663,4 mg/L
ND – 0.006645,6 mg/L
- 0.010811 mg/L 0.004613
mg/L 0.0013 – 0.002114,15
mg/L Uranium, total2 21.83E-7 - - - - - - - 6.09E-7 - - - 0.088,9 mg/kg - - -
Uranium, suspended - <2.0E-10 to 2.0E-7* ND - 0.00144 mg/L ND6 0.00358 mg/L ND – 0.000511 mg/L
ND13 0.0004 – 0.006914,15
mg/L
0 to 1E-9 6.09E-7* 0.00054
mg/L 0.00146 mg/L 0.017611 mg/L 0.001713
mg/L 0.002615
mg/L
Th-230, dissolved - <2.0E-10 to 4.14E-6* ND - 0.054 pCi/L ND6 7.28 pCi/L ND11 ND13 ND15 - <2.0E-10* ND4 pCi/L ND6 - 0.0211 pCi/L ND13 ND15
Th-230, suspended - <2.0E-10 to <9.0E-7* ND - 0.74 pCi/L ND6 3.18 pCi/L ND – 0.211 pCi/L 0.113 pCi/L ND – 2.015
pCi/L 2E-10 3.0E-10* 0.24 pCi/L 0.7 pCi/L6 - 8.711 pCi/L 1.113 pCi/L 1.215 pCi/L
Ra-226, dissolved - <2.0E-10 to 2.0E-9* 0.26 – 1.84 pCi/L ND6 0.538 pCi/L 0.16 – 1.811 pCi/L 0.3913 pCi/L 0.05 – 7.815
pCi/L - 2.0E-10* 0.184 pCi/L ND6 - 0.6811 pCi/L 0.2413
pCi/L 0.4915
pCi/L Ra-226, suspended - <2.0E-10 to <2.0E-7* ND - 1.34 pCi/L ND6 4.48 pCi/L ND – 0.6811 pCi/L ND13 0.39 – 6.715
pCi/L 7E-10 to 1.1E-9 <2.0E-10* 4.34 pCi/L 0.3 pCi/L6 - 2811 pCi/L 6.513 pCi/L 3.415 pCi/L
Ra-226, total - - - - - - - - - - - - 0.058,9 pCi/g - - -
Pb-210 - - - - - - - - 0 to 1E-10 - - - - - - -
Acetone - ND ND3 ND5 ND7 ND10 ND12 ND14 - ND ND3 ND5 - - - ND14
Benzene - ND ND3 ND5 ND7 ND10 ND12 ND14 - ND ND3 ND5 - - - ND14
Carbon Tetrachloride - ND ND3 ND5 ND7 ND10 ND12 ND14 - ND ND3 ND5 - - - ND14 Chloroform - ND ND3 ND5 ND7 ND10 ND12 ND14 - ND ND3 ND5 - - - ND14 Chloromethane - ND ND3 ND5 ND7 ND10 ND12 ND14 - ND ND3 ND5 - - - ND14
Methyl ethyl ketone - ND ND3 ND5 ND7 ND10 ND12 ND14 - ND ND3 ND5 - - - ND14
Methylene chloride - ND ND3 ND5 ND7 ND10 ND12 ND14 - ND ND3 ND5 - - - ND14 Napthalene - ND ND3 ND5 ND7 ND10 ND12 ND14 - ND ND3 ND5 - - - ND14
Toluene - ND ND3 ND5 ND7 ND10 ND12 ND14 - ND ND3 ND5 - - - ND14
Xylenes, total - ND ND3 ND5 ND7 ND10 ND12 ND14 - ND ND3 ND5 - - - ND14 Source: FES Table 2.22 and Mill Sample Data *Data are from historical sampling events. All other data were collected during the 2009 annual Seeps and Springs and Semi-Annual Effluent Report (SAER) sampling events.
2 Calculated by EFRI for activity comparison using the Specific Activity for U-nat (6.77E-7 Ci U-nat/g U-nat)
3 Data are from the 2010 Seeps and Springs sampling event. 4 Data are from 2010 SAER sampling events. 5 Data are from 2011 Seeps and Springs sampling event. 6 Data are from 2011 SAER quarterly sampling events. 7 Data are from 2012 Seeps and Springs sampling event.
8 Data are from 2012 SAER quarterly sampling events. 9 Sediment samples are collected in the 4th quarter in lieu of surface water when Westwater Creek is dry throughout the year.
10 Data are from 2013 Seeps and Springs sampling event.
11 Data are from 2013 SAER quarterly sampling events. 12 Data are from 2014 Seeps and Springs sampling event. 13 Data are from 2014 SAER quarterly sampling events. 14 Data are from 2015 Seeps and Springs sampling event. 15 Data are from 2015 SAER quarterly sampling event.
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1.5 Groundwater
Groundwater investigation and monitoring at the Mill focus on the perched groundwater zone, which is the
shallowest groundwater encountered beneath the site. Although this section focuses primarily on the perched water zone, deeper groundwater is discussed as needed, and the site geology is addressed to the
extent necessary for interpretive context. A more extensive discussion of site geology is provided in Section 1.6.
Sections 1.5.1 and 1.5.2 are based primarily on the following reports prepared by Hydro Geo Chem, Inc. (“HGC”): Hydrogeology of the Perched Groundwater Zone and Associated Seeps and Springs Near the
White Mesa Uranium Mill Site (HGC, 2010b), and Hydrogeology of the White Mesa Uranium Mill,
Blanding, Utah (HGC, 2014). Information abstracted from these reports presented here is updated with information collected subsequent to June 6, 2014.
HGC (2010b) and HGC (2014) supplement the “HGC 2009” report summarized in Revision 4.0 of the Reclamation Plan. They provide additional information in response to requirements set out in previous
revisions of the GWDP and Part 1F.10 of the current GWDP dated August 24, 2012. Specifically, the additional information contained in HGC (2010b) and HGC (2014) include data on seeps and springs in
the vicinity of the Mill, the relationship of the seeps and springs with the perched water system, and estimated travel times for shallow groundwater to travel from the tailings cells to the nearest discharge points. This information addresses requirements set out in previous revisions of the GWDP and Part 1F.10 of the current GWDP dated August 24, 2012. HGC (2014) contains refined estimates of shallow groundwater travel times downgradient of the tailings cells based on data collected from DR-series piezometers installed south, southwest, and west of the tailings cells in 2011, as described in Second
Revision, Hydrogeology of the Perched Groundwater Zone in the Area Southwest of the Tailings Cells,
White Mesa Uranium Mill Site, Blanding Utah (HGC 2012b; the “southwest area investigation” report).
Sections 1.5.3, 1.5.5, and 1.5.6 are based primarily on groundwater sampling programs at the Mill and
Section 1.5.4 is based primarily on the analysis of groundwater analytical data by INTERA, Inc. (INTERA). INTERA performed extensive analysis of background perched water quality data and established site-
specific groundwater compliance limits (“GWCLs”). Reports detailing work by INTERA include Revised
Background Groundwater Quality Report: Existing Wells For Denison Mines (USA) Corp.’s White Mesa
Mill Site, San Juan County, Utah (INTERA 2007a), and subsequent reports, as discussed in Section 1.5.4.
1.5.1 Groundwater Characteristics
Groundwater investigations at the Mill have been ongoing for more than 38 years, beginning with the initial investigation by Dames and Moore in 1977 and 1978 (Dames and Moore 1978a and 1978b). The initial investigation by Dames and Moore pre-dated Mill construction and operation.
Although more than 35 years of perched groundwater monitoring at the Mill indicates that tailings cell operation has not impacted perched groundwater (as will be discussed in Section 1.5.4), perched
groundwater was impacted by disposal of laboratory wastes to two (now abandoned) sanitary leach fields (prior to about 1980) before the Mill and tailings cells were operational. Disposal of laboratory wastes is
considered the source of a chloroform plume (defined by concentrations greater than 70 micrograms per liter [µg/L]) located upgradient to cross-gradient (northeast to east) of the tailings cells. A nitrate plume (defined by concentrations greater than 10 milligrams per liter [mg/L]) that contains elevated chloride (exceeding 100 mg/L) extends from upgradient (northeast) of the tailings cells to a portion of the area beneath the tailings cells. The precise source(s) of the nitrate plume are not well defined; however, because the majority of the plume exists upgradient (northeast) of the tailings cells, the sources must be located
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upgradient (northeast) of the tailings cells. Based on the investigation and source evaluations, there are no known current unidentified or unaddressed sources. There appear to have been a number of known and potential historical sources; however, it has not been possible to confirm or quantify the contribution of
each source.
The northwest portion of the chloroform plume commingles with the nitrate plume. Both chloroform and
nitrate plumes are under corrective action by pumping.
1.5.1.1 Geologic Setting
The Mill is located within the Blanding Basin of the Colorado Plateau physiographic province. Typical of
large portions of the Colorado Plateau province, the rocks underlying the site are relatively undeformed. The average site elevation is approximately 5,600 ft (1,707 m) above mean sea level (amsl).
The site is underlain by unconsolidated alluvium and indurated sedimentary rocks consisting primarily of sandstone and shale. The indurated rocks are relatively flat lying with dips generally less than 3 degrees. The alluvial materials consist mostly of aeolian silts and fine-grained aeolian sands with a thickness varying from a few feet to as much as 25 to 30 ft (7.6 to 9.1 m) across the site. The alluvium is underlain by the Dakota Sandstone and Burro Canyon Formation, which are sandstones with a total thickness ranging from approximately 55 to 140 ft (17 to 43 m). Beneath the Burro Canyon Formation lies the Morrison Formation, consisting (in descending order) of the Brushy Basin Member, the Westwater Canyon Member, the Recapture Member, and the Salt Wash Member. Kirby (2008) indicates that the contact between the Morrison Formation and the Burro Canyon Formation (between the Brushy Basin Member of the Morrison
and the Burro Canyon Formation) near Blanding, Utah is disconformable with “local erosional relief of several feet”. Data collected from perched borings at the site that penetrate the Brushy Basin Member are
consistent with a disconformable, erosional contact in agreement with Kirby (2008).
The Brushy Basin and Recapture Members of the Morrison Formation, classified as shales, are fine-grained and have a low permeability. The Westwater Canyon and Salt Wash Members also have a low average vertical permeability due to the presence of interbedded shales. See Figure 1.5-1 for a generalized stratigraphic column for the region.
Beneath the Morrison Formation lies the Summerville Formation, an argillaceous sandstone with interbedded shales, and the Entrada Sandstone. Beneath the Entrada Sandstone lies the Navajo Sandstone.
The Navajo and Entrada Sandstones constitute the primary aquifer in the area of the site. The Entrada and Navajo Sandstones are separated from the Burro Canyon Formation by approximately 1,000 to 1,100 ft
(305 to 335 m) of materials with a low average vertical permeability. Groundwater within this system is under artesian pressure in the vicinity of the site, and is used only as a secondary source of water at the site. Water in WW-series supply wells completed across these sandstone units at the site rises approximately 800 feet above the base of the overlying Summerville Formation (Titan, 1994a).

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Insert
Figure 1.5-1 Generalized Stratigraphy of White Mesa Mill (Adapted from the 2007 ER, Figure 3.7-1)

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1.5.1.2 Hydrogeologic Setting
The site is located within a dry to arid continental climate region with an average annual precipitation of less than 13.3 in. and an annual lake evaporation rate of approximately 47.6 inches. Recharge to aquifers (such as the Entrada/Navajo) occurs primarily along the mountain fronts (for example, the Henry, Abajo, and La Sal Mountains), and along the flanks of folds such as Comb Ridge Monocline.
The Entrada/Navajo aquifer can yield significant quantities of water to wells (hundreds of gallons per minute [gpm]). Although the water quality and productivity of the Entrada/Navajo aquifer are generally good, the depth of the aquifer (approximately 1,200 ft below land surface [bls]) makes access difficult.
1.5.1.3 Perched Zone Hydrogeology
Perched groundwater beneath the site occurs primarily within the Burro Canyon Formation, although in areas having greater saturated thicknesses, perched groundwater extends into the overlying Dakota Sandstone. Perched groundwater originates mainly from precipitation and local recharge sources such as unlined reservoirs (Kirby, 2008). Perched groundwater at the site has a generally low quality due to high
total dissolved solids (TDS) and is used primarily for stock watering and irrigation in the areas upgradient (north) of the site. As of the first quarter of 2016, TDS concentrations measured in water sampled from on-
site perched monitoring wells range between approximately 1,000 and 8,300 mg/1. The saturated thickness of the perched water zone generally increases to the north of the site, increasing the yield of the perched zone to wells installed north of the site. Perched water is supported within the Burro Canyon Formation by the underlying, fine-grained Brushy Basin Member.
The Brushy Basin Member is primarily composed of bentonitic mudstones, siltstones, and claystones and is considered an aquiclude. Figure 1.5-2 is a contour map showing the approximate elevation of the contact of the Burro Canyon Formation with the Brushy Basin Member, which essentially forms the base of the
perched water zone at the site. The elevations of Ruin Spring and Westwater Seep, which occur at the contact between the Brushy Basin Member and the Burro Canyon Formation, are included in the
contouring. Abandoned borings/wells, monitoring wells, and piezometers shown on Figure 1.5-2 consist of surveyed perched zone monitoring wells and piezometers that include temporary perched zone borings and monitoring wells associated with the chloroform and nitrate plumes located east and northeast (cross gradient to upgradient) of the tailings cells. TW-4-series wells, MW-4, MW-26, and MW-32 are chloroform program wells and TWN-series wells are nitrate program wells. Contact elevations are based on monitoring well drilling and geophysical logs and surveyed land surface elevations.
As indicated on Figure 1.5-2, the contact generally dips to the south/southwest beneath the site. A structural high that is evident in the Brushy Basin Member/Burro Canyon Formation contact extends from beneath Cell 4B southwest to the vicinity of abandoned boring DR-18. A paleovalley in the Brushy Basin Member
surface is present along the western mesa rim to the west of the structural high.
The permeability of the Dakota Sandstone and Burro Canyon Formation at the site is generally low. No
significant joints or fractures within the Dakota Sandstone or Burro Canyon Formation have been documented in any wells or borings installed across the site (Knight Piésold, 1998). Any fractures observed in cores collected from site borings are typically cemented, showing no open space.

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Insert
Figure 1.5-2 Approximate Elevation of Top of Brushy Basin

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Based on samples collected during installation of wells MW-16 (immediately downgradient of tailings cell 3 and abandoned prior to construction of cell 4B) and MW-17 (cross-gradient of the tailings cells complex (Figure 1.5-2)), porosities of the Dakota Sandstone range from 13.4 percent to 26 percent, averaging 20
percent. Water saturations range from 3.7 percent to 27.2 percent, averaging 13.5 percent. The average volumetric water content is approximately 3 percent. The hydraulic conductivity of the Dakota Sandstone,
based on packer tests in borings installed at the site, ranges from 2.71E-06 centimeters per second (cm/s) to 9.12E-04 cm/s, with a geometric average of 3.89E-05 cm/s (Titan, 1994a).
The average porosity of the Burro Canyon Formation is similar to that of the Dakota Sandstone. Based on samples collected from the Burro Canyon Formation at MW-16 (abandoned), porosity ranges from 2 percent to 29.1 percent, averaging 18.3 percent. Water saturations of unsaturated materials range from 0.6 percent to 77.2 percent, averaging 23.4 percent. Titan (1994a) reported that the hydraulic conductivity of the Burro Canyon Formation ranges from 1.9E-07 to 1.6E-03 cm/s, with a geometric mean of 1.1E-05 cm/s, based on the results of 12 pump/recovery tests performed in monitoring wells and 30 packer tests performed in borings prior to 1994.
Subsequent hydraulic testing of perched zone wells yielded a site-wide hydraulic conductivity range of 2 x 10-8 to 0.01 cm/s (HGC, 2014). In general, the highest permeabilities and well yields are immediately
northeast and east (upgradient to cross gradient) of the tailings cells. A relatively continuous, higher permeability zone (associated with poorly indurated coarser-grained materials in the general area of the chloroform plume) has been inferred to exist in this portion of the site. Analysis of drawdown data collected from this zone during long-term pumping of MW-4, MW-26 (formerly TW4-15), and TW4-19 yielded estimates of hydraulic conductivity ranging from 4E-05 to 1E-03 cm/s. The decrease in perched zone permeability south, southwest, and southeast of TW4-4, based on hydraulic tests at TW4-6, TW4-23, TW4-26, TW4-27, TW4-29 through TW4-31, and TW4-33 through TW4-35 indicate that this higher permeability zone “pinches out”.
Hydraulic tests performed at groups of wells and piezometers located northeast (upgradient) of, in the
immediate vicinity of, and southwest (downgradient) of the tailings cells indicate generally lower permeabilities compared with the area of the chloroform plume. The following results from HGC (2014) are based on analysis of automatically logged slug test data using the KGS solution available in AQTESOLVE (HydroSOLVE, 2000).
Testing of 19 TWN-series wells installed in the northeast portion of the site as part of nitrate investigation activities yielded a hydraulic conductivity range of approximately 3.6 x 10-7 to 0.01 cm/s with a geometric average of approximately 6 x 10-5 cm/s. The value of 0.01 cm/s estimated for TWN-16 is the highest measured at the site, and the value of 3.6 x 10-7 cm/s estimated for TWN-7 is one of the lowest measured at the site. Testing of MW-series wells MW-23 through MW-32 installed between and at the margins of the
tailings cells in 2005 (and using the higher estimate for MW-23) yielded a hydraulic conductivity range of approximately 2 x 10-7 to 1 x 10-4 cm/s with a geometric average of approximately 2 x 10-5 cm/s. Hydraulic
tests conducted at DR-series piezometers installed as part of the southwest area investigation downgradient of the tailings cells yielded hydraulic conductivities ranging from approximately 2 x 10-8 to 4 x 10-4 cm/s with a geometric average of 9.6 x 10-6 cm/s. The low permeabilities and shallow hydraulic gradients downgradient of the tailings cells result in average perched groundwater pore velocity estimates that are among the lowest on site (approximately 0.26 feet per year (ft/yr) to 0.91 ft/yr).
The extensive hydraulic testing of perched zone wells at the site indicates that perched zone permeabilities are generally low with the exception of the apparently isolated zone of higher permeability associated with the chloroform plume east to northeast (cross-gradient to upgradient) of the tailings cells. The geometric
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average hydraulic conductivity (less than 1 x 10-5 cm/s) of the DR-series piezometers which cover an area nearly half the size of the total monitored area at White Mesa (excluding MW-22), is nearly identical to the geometric average hydraulic conductivity of 1.01 x 10-5 cm/s reported by Titan (1994a), and is within the
range of 5 to 10 feet per year (ft/yr) [approximately 5 x 10-6 cm/s to 1 x 10-5 cm/s] reported by Dames and Moore (1978b) for the (saturated) perched zone during the initial site investigation.
Because of the generally low permeability of the perched zone beneath the site, well yields are typically low (generally less than 0.5 gpm). Many of the perched monitoring wells purge dry and take several hours to more than a day to recover sufficiently for groundwater samples to be collected. Sufficient productivity can generally be obtained only in areas where the saturated thickness is greater, which is the primary reason that the perched zone has been used on a limited basis as a water supply to the north (upgradient) of the site, but has not been used downgradient of the site. Within areas on the east side of the site that have greater saturated thicknesses due to proximity to the two northern wildlife ponds, and that intercept the higher permeability materials associated with the chloroform plume, well yields of as much as 4 gpm were achievable. However, since water delivery to the two northern wildlife ponds ceased in 2012, saturated
thicknesses and well productivities in this area have diminished. As of the fourth quarter of 2015, sustainable, average pumping rates at chloroform and nitrate pumping wells ranged from less than 0.1 to
approximately 1 gpm
1.5.1.4 Perched Groundwater Flow
Perched groundwater flow at the site is generally from northeast to southwest. Figure 1.5-3 displays the
local perched groundwater elevation contours at the Mill, as measured in the first quarter of 2016. Depression of the perched water table occurs near chloroform pumping wells MW-4, MW-26, TW4-1,
TW4-2, TW4-4, TW4-11, TW4-19, TW4-20, TW4-21, TW4-22 and TW4-37, and near nitrate pumping wells TW4-22, TW4-24, TW4-25, and TWN-2. These wells are pumped to reduce chloroform and nitrate mass in the perched zone east and northeast of the tailings cells. As shown on Figure 1.5-3, beneath and south of the tailings management cells, in the west central portion of the site, perched water flow is south-southwest to southwest. Flow on the western margin of the mesa is generally south, approximately parallel to the rim (where the Burro Canyon Formation [and perched water zone] is terminated by erosion). On the eastern side of the site perched water flow is also generally to the south. Because of mounding near wildlife ponds, flow direction ranges locally from westerly (west of the ponds) to easterly (east of the ponds).
Dry areas in the perched zone southwest of the tailings management cells occur along the structural high in
the Brushy Basin Member/Burro Canyon Formation contact that extends from beneath tailings cell 4B southwest to the vicinity of abandoned boring DR-18. In places along this structural high the contact rises
above the perched water elevation creating the dry areas shown on Figure 1.5-3.
An apparent groundwater divide occurs west of Cell 4B near DR-2. Water north of the apparent divide flows primarily north-northeast to Westwater Seep and water south of the apparent divide flows south toward Ruin Spring.

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Insert
Figure 1.5-3 Kriged 1st Quarter, 2016 Water Levels

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Perched zone hydraulic gradients currently range from a maximum of approximately 0.096 ft/ft east of tailings cell 2 (north of pumping well TW4-11) to approximately 0.0042 ft/ft west-southwest of Cell 4B (between DR-7 and DR-5). The overall average site hydraulic gradient of approximately 0.011 ft/ft
(between TWN-19 and Ruin Spring) is similar to the average hydraulic gradient downgradient of the tailings management cells of approximately 0.012 ft/ft (between MW-37 and Ruin Spring).
1.5.1.5 Perched Zone Hydrogeology Beneath and Downgradient of The Tailings Management Cells
Based on measurements at non-pumping wells, 1st Quarter, 2016 perched water depths ranged from approximately 32 feet in the northeastern portion of the site (adjacent to the wildlife ponds) to approximately 114 feet at the southwest margin of Cell 3 (Figure 1.5-4). Based on measurements at non-pumping wells, 1st Quarter, 2016 perched zone saturated thicknesses ranged from approximately 83 ft in
the northeast portion of the site to less than 1 ft in the southwest portion of the site (Figure 1.5-5). The relatively large saturated thicknesses in the northeastern portion of the site are related to past seepage from
the northern wildlife ponds located northeast of the tailings management cells.
Water levels in DR-22 and chloroform pumping well TW4-11 are below the top of the Brushy Basin Member, yielding saturated thicknesses of zero. Casings in DR-22 and TW4-11 extend approximately 2.5 feet and 11.5 feet, respectively, below the Brushy Basin Member contact. Although water is present in the bottom of the DR-22 casing, the level is below the Brushy Basin contact. The water level in TW4-11 is maintained at or below the Brushy Basin contact by pumping.
Areas of small saturated thickness (less than 5 feet) occur west and southwest of the tailings management
cells. As shown in Figures 1.5-4 and 1.5-5, an area of small saturated thickness extends between Westwater Seep and the southwest portion of Cell 4B, encompassing DR-6 and DR-10. As discussed in HGC (2014),
perched water flows westward from the area of the tailings cells through the area of low saturated thickness between DR-6 and DR-10, into an area having saturated thicknesses several times larger than at DR-6 and DR-10. The transmissivity (the product of hydraulic conductivity and saturated thickness) of the area of low saturated thickness is two to three orders of magnitude lower than for the area of larger saturated thickness to the west (near DR-2 [abandoned], DR-5, and DR-9). Water flows out of the area of larger saturated thickness (near DR-2 [abandoned] and DR-5) to the northeast toward known discharge point Westwater Seep and to the south through a paleovalley in the Brushy Basin Member surface towards known discharge point Ruin Spring. The relationship between perched water and seeps and springs is discussed in more detail in Section 1.5.2.
Darcy’s Law calculations presented in HGC (2014) indicate that an additional water source is needed to maintain the relatively large saturated thicknesses west of the area of low saturated thickness encompassing
DR-6 and DR-10; otherwise Westwater Seep and the paleovalley to the south would drain the area of larger saturated thickness more quickly than water was supplied. The most likely source of additional water to the area of larger saturated thickness is infiltration of precipitation.

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Insert
Figure 1.5-4 1st Quarter, 2016 Depths to Perched Water (from Measuring Point)

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Insert
Figure 1.5-5 1st Quarter, 2016 Perched Zone Saturated Thicknesses

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As discussed above, perched zone hydraulic gradients currently range from a maximum of approximately 0.096 feet per foot (ft/ft) east of Cell 2 to approximately 0.0042 ft/ft west-southwest of the tailings management cells, between DR-7 and DR-5. The average hydraulic gradient between the downgradient
edge of tailings Cell 4B and Ruin Spring is approximately 0.012 ft/ft, similar to the overall site hydraulic gradient (between TWN-19 and Ruin Spring) of approximately 0.011 ft/ft. The combination of relatively
low hydraulic conductivities (geometric average of approximately 1 x 10-5 cm/s) and relatively flat hydraulic gradients downgradient of the tailings management cells imply small groundwater velocities and large travel times.
1.5.2 Seep and Spring Occurrence and Hydrogeology
Perched groundwater discharges in seeps and springs located to the west, south, east, and southeast of the site along the margins of White Mesa.
All seeps and springs examined have associated cottonwood trees that suggest a relatively consistent source of water. Seeps and springs occurring at the margins of White Mesa are typically associated with sandstones of the Burro Canyon Formation, except Cottonwood Seep, which is associated with the lower portion of
the Brushy Basin Member of the Morrison Formation. Figure 1.5-6 shows the December 2009 surveyed locations of seeps and springs and the Frog Pond. As shown on Figure 1.5-6, all springs and seeps are
located within drainages, and except for Cottonwood Seep, are located at the mesa margins. Table 1.5-1 provides surveyed locations and elevations of the seeps and springs and the Frog Pond. The December 2009 seep and spring survey data shown in Table 1.5-1 were used in subsequent reporting where seep and spring locations and elevations were relevant.
Table 1.5-1 Surveyed Locations and Elevations of Seeps and Springs and the Frog Pond (December 2009)
Location Latitude (N) Longitude (W) Elevation FROG POND 37°33'03.5358" 109°29'04.9552" 5589.56 CORRAL CANYON 37°33'07.1392" 109°29'12.3907" 5623.97 ENTRANCE 37°32'01.6487" 109°29'33.7005" 5559.71
CORRAL SPRINGS 37°29'37.9192" 109°29'35.8201" 5383.35
RUIN SPRING 37°30'06.0448" 109°31'23.4300" 5380.03
COTTONWOOD 37°31'21.7002" 109°32'14.7923" 5234.33
WEST WATER 37°31'58.5020" 109°31'25.7345" 5468.23
Re-Surveyed July 2010 RUIN SPRING 37°30'06.0456" 109°31'23.4181" 5380.01
COTTONWOOD 37°31'21.6987" 109°32'14.7927" 5234.27
WEST WATER 37°31'58.5013" 109°31'25.7357" 5468.32

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Insert
Figure 1.5-6 Seeps and Springs on USGS Topographic Base, White Mesa (Adapted from HGC, 2014, Figure E.1)
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As discussed in Section 1.1.5.4, Figure 1.5-3 shows first quarter 2016 perched water level contours and the locations and elevations of seeps and springs. Perched water level contours are based on water levels measured in the perched groundwater monitoring wells shown on Figure 1.5-3, and include elevations of
all seeps and springs except Cottonwood Seep. Based on Figure 1.5-3, Corral Canyon Seep is located upgradient of the tailings management cells, and Entrance Spring and Corral Springs are located cross
gradient of the tailings management cells. Both Entrance Spring and Corral Springs are separated from the tailings management cells by a groundwater divide. Westwater Seep is the closest discharge point west of the tailings management cells and Ruin Spring is the closest discharge point south-southwest of the tailings management system. Ruin Spring is located downgradient of approximately the southeastern 2/3 of the tailings management system, and Westwater Seep appears to be downgradient of approximately the northwestern 1/3 of the tailings management system. Cottonwood Seep is neither cross gradient nor downgradient of the tailings management cells because it is interpreted to receive water from a source other than the perched groundwater system hosted by the Burro Canyon Formation.
The relationship between seeps and springs and the geology of White Mesa are shown on Figure 1.5-7. The
geology on Figure 1.5-7 is based on Kirby (2008) and Hintze, et al. (2000), and has been modified locally by field reconnaissance. The Burro Canyon Formation and the Dakota Sandstone are undifferentiated on
the geologic map. As shown on Figure 1.5-7, all seeps and springs except Cottonwood Seep are associated with outcrops of the Burro Canyon Formation (and/or Dakota Sandstone). Some are also associated with mixed eolian and alluvial deposits stratigraphically above the Burro Canyon Formation and/or Dakota Sandstone. Ruin Spring and Westwater Seep are located at the contact between the Burro Canyon Formation and underlying Brushy Basin Member. Westwater Seep (where typically sampled) occurs within alluvium at the Burro Canyon Formation/Brushy Basin Member contact whereas Ruin Spring occurs at the contact but above the alluvium in the associated drainage. Corral Canyon Seep, Entrance Spring, and Corral Springs occur within alluvium near the contact of the alluvium with the Burro Canyon Formation, but at an elevation above the contact between the Burro Canyon Formation and Brushy Basin Member. In contrast, Cottonwood Seep is mapped within the Brushy Basin Member, approximately 1,500 feet west of the termination of the Burro Canyon Formation at the western mesa rim, and stratigraphically more than 200
feet below the contact between the Burro Canyon Formation and Brushy Basin Member.
The Burro Canyon Formation (and perched water zone) does not exist at Cottonwood Seep because it has been eroded. Cottonwood Seep is interpreted to receive water primarily from a source stratigraphically below the Burro Canyon Formation and from a hydrogeologic system other than the perched water system at the site. The primary source of Cottonwood Seep (and “2nd Seep” immediately to the north of Cottonwood Seep) is interpreted to be coarser-grained materials within the lower portion of the Brushy Basin Member or upper portion of the Westwater Canyon Member.

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Insert
Figure 1.5-7 Geologic Map on USGS Topographic Base (HGC, 2014 Figure E.2)
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Springs occurring within alluvium deposited within drainages cutting the Burro Canyon Formation may or may not receive a contribution from perched water. Except for Ruin Spring (and “2nd Seep” immediately to the north of Cottonwood Seep), each spring and seep occurs in alluvial materials within a drainage that
will supply surface water during wet periods and help to recharge any alluvial materials within the drainage as well as bedrock near the drainage. Westwater Seep, Corral Canyon Seep, Entrance Spring, and Corral
Springs may therefore receive water from both alluvial and bedrock (perched water) sources. Corral Springs, located immediately downgradient of a stock pond, may receive water primarily from alluvium recharged from the stock pond. Any alluvial materials within the drainage or marginal bedrock that are recharged during precipitation events will likely, at least temporarily, yield water to the seeps.
HGC (2014) discusses the potential for enhanced recharge from precipitation along the mesa margins where Dakota Sandstone and/or Burro Canyon Formation are exposed by erosion. Such recharge is expected to temporarily enhance flow at nearby seeps and springs draining the Burro Canyon Formation and/or Dakota Sandstone. The area of increased saturated thickness west of DR-6 and DR-10 is likely the result of recharge enhanced by the direct exposure of weathered Dakota Sandstone and Burro Canyon Formation, and the
thinness or absence of any overlying low permeability materials such as the Mancos Shale (Figure 1.5-7).
Although seep and spring elevations (except Cottonwood Seep) have been included in perched water level
contour maps (such as Figure 1.5-3) since the HGC (2010b) investigation, the assumption that the seep or spring elevation is representative of the perched water elevation is likely to be correct only in cases where the feature receives most or all of its flow from the perched water, and where the supply is relatively continuous (for example, Ruin Spring). The uncertainty that results from including seeps and springs in the contouring of perched water levels must be considered when interpreting perched water level data.
Using amethod similar to that presented in HGC (2009a), perched water pore velocities and travel times between the tailings management cells and Ruin Spring and between the tailings management cells and
Westwater Seep were calculated in HGC (2014) using first Quarter 2014 water levels. As discussed in more detail in HGC (2014), the calculated travel times between the downgradient margin of cell 4B and
Ruin Spring range from approximately 10,650 to 19,650 years. The calculated travel time between the southwest corner of Cell 3 to Westwater Seep is approximately 3,230 years.
1.5.3 Groundwater Quality
1.5.3.1 Entrada/Navajo Aquifer
The Entrada and Navajo Sandstones are relatively prolific aquifers beneath and in the vicinity of the site.
Water wells at the site are screened in both of these units, and for the purposes of this discussion they will be treated as a single aquifer. Water in the Entrada/Navajo Aquifer is under artesian pressure, rising 800 to 900 ft above the top of the Entrada’s contact with the overlying Summervillle Formation; static water levels are 390 to 500 ft below ground surface.
Within the region, this aquifer is capable of yielding domestic quality water at rates of 150 to 225 gpm. For that reason, it serves as a secondary source of water for the Mill. Additionally, two domestic water supply wells drawing from the Entrada/Navajo Aquifer are located 4.5 miles southeast of the Mill site on the Ute Mountain Ute Reservation. Although the water quality and productivity of the Navajo/Entrada aquifer are generally good, the depth of the aquifer (greater than1,000 ft bls) makes access difficult.
Table 1.5-2 is a tabulation of groundwater quality of the Navajo Sandstone aquifer as reported in the FES and subsequent sampling. TDS ranges from 216 to 1,110 mg/l in three samples taken over a period from January 27, 1977, to May 4, 1977. High iron concentrations are found in the Navajo Sandstone. Because
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the Navajo Sandstone aquifer is isolated from the perched groundwater zone by approximately 1,000 to 1,100 ft of materials having a low average vertical permeability, sampling of the Navajo Sandstone is not required under the Mill’s previous NRC Point of Compliance monitoring program or under the GWDP.
However, samples were taken at two other deep aquifer wells (#2 and #5) on site (see Figure 1.5-8 for the locations of these wells), on June 1, 1999 and June 8, 1999, respectively, and the results are included in
Table 1.5-2.

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Table 1.5-2 Water Quality of the Navajo Sandstone Aquifer in the Mill Vicinity
Parameter FES, Test Well (G2R) (1/27/77 - 3/23/781)
Well #2 6/01/991 Well #5 6/08/991
Field Specific Conductivity (umhos/cm) 310 to 400
Field pH 6.9 to 7.6
Temperature (ºC) 11 to 22
Estimated Flow m/hr (gpm) 109(20) pH 7.9 to 8.16 Determination, mg/liter TDS (@180ºC) 216 to 1110
Redox Potential 211 to 220
Alkalinity (as CaCOS3) 180 to 224
Hardness, total (as CaCO3) 177 to 208
Bicarbonate 226 214
Carbonate (as CO3) 0.0 <1.0 <1.0
Aluminum 0.003 0.058
Aluminum, dissolved <0.1
Ammonia (as N) 0.0 to 0.16 <0.05 <0.05
Antimony <0.001 <0.001
Arsenic, total .007 to 0.014 0.018 <0.001
Barium, total 0.0 to 0.15 0.119 0.005
Beryllium <0.001 <0.001
Boron, total <0.1 to 0.11 Cadmium, total <0.005 to 0.0 <0.001 0.018 Calcium 50.6 39.8 Calcium, dissolved 51 to 112 Chloride 0.0 to 50 <1.0 2.3 Sodium 7.3 9.8 Sodium, dissolved 5.3 to 23 Silver <0.001 <0.001 Silver, dissolved <0.002 to 0.0 Sulfate 28.8 23.6 Sulfate, dissolved (as SO4) 17 to 83 Vanadium 0.003 0.003 Vanadium, dissolved <.002 to 0.16 Manganese 0.011 0.032 Manganese, dissolved 0.03 to 0.020 Chromium, total 0.02 to 0.0 0.005 0.005 Copper, total 0.005 to 0.0 0.002 0.086 Fluoride 0.18 0.18 Fluoride, dissolved 0.1 to 0.22
1 Zero values (0.0) are below detection limits.
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Table 1.5-2 Water Quality of the Navajo Sandstone Aquifer in the Mill Vicinity (continued)
Parameter FES, Test Well (G2R) (1/27/77 - 3/23/781)
Well #2 6/01/991 Well #5 6/08/991
Iron, total 0.35 to 2.1 0.43 0.20
Iron, dissolved 0.30 to 2.3
Lead, total 0.02 - 0.0 <0.001 0.018
Magnesium 20.4 21.3
Magnesium, dissolved 15 to 21
Mercury, total <.00002 to 0.0 <0.001 <0.001
Molybdenum 0.001 <0.001
Molybdenum, dissolved 0.004 to 0.010
Nickel <0.001 0.004
Nitrate + Nitrate as N <0.10 <0.10
Nitrate (as N) <.05 to 0.12 Phosphorus, total (as P) <0.01 to 0.03 Potassium 3.1 3.3 Potassium, dissolved 2.4 to 3.2 Selenium <0.001 <0.001 Selenium, dissolved <.005 to 0.0 Silica, dissolved (as SiO2) 5.8 to 12 Strontium, total (as U) 0.5 to 0.67 Thallium <0.001 <0.001 Uranium, total (as U) <.002 to 0.16 0.0007 0.0042 Uranium, dissolved (as U) <.002 to 0.031 Zinc 0.010 0.126 Zinc, dissolved 0.007 to 0.39 Total Organic Carbon 1.1 to 16 Chemical Oxygen Demand <1 to 66 Oil and Grease 1 Total Suspended Solids 6 to 1940 <1.0 10.4 Turbidity 5.56 19.1
Determination (pCi/liter) Gross Alpha <1.0
Gross Alpha + precision 1.6+1.3 to 10.2+2.6
Gross Beta <2.0
Gross Beta + precision 8+8 to 73+19
Radium 226 + precision 0.3+0.2
Radium 228 <1.0
Ra–226 + precision 0.1+.3 to 0.6+0.4
Th–230 + precision 0.1+0.4 to 0.7+2.7
Pb–210 + precision 0.0+4.0 to 1.0+2.0
Po–210 + precision 0.0+0.3 to 0.0+0.8
Source: Adapted from FES Table 2.25 with additional Mill sampling data

1 Zero values (0.0) are below detection limits.
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Insert
Figure 1.5-8 Groundwater (Well or Spring) Sampling Stations in the White Mesa Vicinity (Adapted from the 2007 ER, Figure 3.7-8)

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1.5.3.2 Perched Groundwater Zone
Perched groundwater in the Dakota/Burro Canyon Formation is used on a limited basis to the north (upgradient) of the site because the saturated thickness generally increases to the north of the site and it is more easily accessible than the Entrada/Navajo aquifer. The quality of the perched water at the site is generally poor and extremely variable. As of the first quarter of 2016, the concentrations of TDS measured in water sampled from upgradient and downgradient wells range between approximately 1,000 and 8,300 mg/1. Sulfate concentrations measured in far upgradient wells MW-1, MW-18 and MW-19 ranged from 580 and 2,000 mg/l, and across the site sulfate varied from 430 mg/L to 6,570 mg/L. The perched groundwater therefore is used primarily for stock watering and irrigation. Section 1.5.3 below provides a more detailed discussion of background groundwater quality in the perched aquifer.
1.5.4 Background Groundwater Quality in the Perched Aquifer
A significant amount of historical groundwater quality data has been collected by EFRI and previous operators of the Mill for many wells at the facility.
At the time of original issuance of the GWDP, the Director had not yet completed an evaluation of the historical data, particularly with regard to data quality, and quality assurance issues. The Director also noted several groundwater quality issues that needed to be resolved prior to a determination of background groundwater quality at the site, such as a number of constituents that exceeded their respective Groundwater Quality Standard (“GWQS”) and long-term trends in uranium in downgradient wells MW-14, MW-15 and cross-gradient well MW-17, and a spatial high of uranium in those three wells.
As a result of the foregoing, the Director required that an Existing Well Background Report (INTERA, 2007a) be prepared to address and resolve these issues. Prior to the approval of the Existing Well Background Report, GWCLs were set in Table 2 of the GWDP as 0.25 and 0.5 times the GWQS for Class II and III groundwater respectively.
The Director reviewed the Existing Well Background Report and GWCLs that reflect background groundwater quality were set for all monitoring wells except newly installed MW-35, MW-36, and MW-37. Background data collected for the establishment of GWCLs that reflect background groundwater quality at MW-35, MW-36 and MW-37 were being collected at that time and were subsequently provided in INTERA (2014c).
As required by the GWDP, the Existing Well Background Report addressed all available historical data, which included pre-operational and operational data, for the compliance monitoring wells under the GWDP
that existed at the date of issuance of the GWDP. The Regional Background Report (INTERA, 2007b) focused on pre-operational site data and available regional data to develop the best available set of background data that could not conceivably have been influenced by Mill operations. The New Well Background Report (INTERA 2008), which was required by Part I.H.4 of a previous revision of the GWDP, analyzed the data collected from wells MW-3A, MW-23, MW-24, MW-25, MW-27, MW-28, MW-29, MW-30 and MW-31 (the “new” wells), which were installed in 2005, to determine background concentrations for constituents listed in the GWDP for each new well.
The purpose of the Existing Well Background Report and the New Well Background Report was to satisfy several objectives. First, in the case of the Existing Well Background Report, to perform a quality assurance
evaluation and data validation of the existing and historical on-site groundwater quality data in accordance with the requirements of Part I.H.3 of a previous revision of the GWDP, and to develop a database consisting of historical groundwater monitoring data for “existing” wells and constituents.
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Second, in the case of the New Well Background Report, to compile a database consisting of monitoring results for new wells, which were collected subsequent to issuance of the GWDP, in accordance with the Mill’s Groundwater Quality Assurance Plan (“QAP”) data quality objectives.
Third, to perform a statistical, temporal and spatial evaluation of the existing well and new well data bases to determine if there have been any impacts to groundwater from Mill activities. Since the Mill is an
existing facility that has been in operation since 1980, such an analysis of historical groundwater monitoring data was required in order to ensure that the monitoring results to be used to determine background groundwater quality at the site establish GWCLs that have not been impacted by Mill activities.
Finally, in the event the analysis demonstrates that groundwater has not been impacted by Mill activities, to develop a GWCL for each constituent in each well.
The Regional Background Report was prepared as a supplement to the Existing Well Background Report to provide further support to the conclusion that Mill activities have not impacted groundwater.
In evaluating the historical data for the existing wells, INTERA used the following approach:
 If historical data for a constituent in a well do not demonstrate a statistically significant upward trend (or downward trend in pH), then the proposed GWCL for that constituent is accepted as
representative of background, regardless of whether or not the proposed GWCL exceeds the GWQS for that constituent. This is because the monitoring results for the constituent can be considered to have been consistently representative since commencement of Mill activities or installation of the well; and
 If historical data for a constituent in a monitoring well represent a statistically significant upward trend (or downward trend in the case of pH), then the data is further evaluated to determine whether the trend is the result of natural causes or Mill activities. If it is concluded that the trend results from natural causes, then the GWCL proposed in the Existing Well Background Report will be appropriate.
After applying the foregoing approach, INTERA concluded that, other than some detected chloroform and related organic contamination at the Mill site, which is the subject of a separate investigation and corrective
action, and that is the result of pre-Mill activities, there have been no impacts to groundwater from Mill activities.
In reaching this conclusion, INTERA noted that, even though there are a number of increasing trends in various constituents at the site, none of the trends are caused by Mill activities for the following reasons:
 Chloride is unquestionably the best indicator parameter, and there are no significant trends in chloride which are attributable to Mill activities in any of the wells
 There are no noteworthy correlations between chloride and uranium in wells with increasing trends in uranium, other than in far upgradient wells MW-19 and MW-18, which INTERA concluded are not related to potential tailings seepage. MW-18 and MW-19 cannot have been impacted because they are located more than 2,200 feet northeast (upgradient) of the tailings management system and perched water elevations in these wells are approximately 15 to 25 feet higher than perched water elevations beneath the northeast (upgradient) corner of the tailings management cells. INTERA noted that it is inconceivable to have an increasing trend in any other parameter caused by seepage from the Mill tailings without a corresponding increase in chloride
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 There are significant increasing trends far upgradient in MW-1, MW-18 or MW-19 in uranium, sulfate, TDS, iron, selenium, thallium, ammonia and fluoride and far downgradient in MW-3 in uranium and selenium, sulfate, TDS and pH (decreasing trend). INTERA concluded that these data provide very strong evidence that natural site phenomena are the cause of increasing trends in these constituents (decreasing with respect to pH) in other site wells and that these data also support the conclusion that natural phenomena are the cause of increasing trends in other constituents
 On a review of the spatial distribution of constituents, it is quite apparent that the constituents of concern are dispersed across the site and not located in any systematic manner that would suggest
tailings leakage.
INTERA concluded that, after extensive analysis of the data, and given the conclusion that there have been
no impacts to groundwater from Mill activities, the proposed GWCLs set out in Table 16 of the Existing Well Background Report are appropriate, and are indicative of background perched groundwater quality. INTERA did advise, however, that proposed GWCLs for all the trending constituents should be re-evaluated upon GWDP renewal to determine if they are still appropriate at the time of renewal.
In the New Well Background Report, INTERA followed the same approach used in the Existing Well Background Report for evaluating the existing well data. In addition, INTERA compared the groundwater monitoring results for the new wells to the results for the existing wells analyzed in the Existing Well
Background Report and to the pre-operational and regional results analyzed in the Regional Background Report. This was particularly important for analysis of the new wells because available historical analytical
data for constituents in those wells post-date the commencement of Mill operations. Available data for the new wells may not be sufficient to identify long-term constituent trends. By comparing the means for the constituents in the new wells to those for existing well and regional background data, INTERA was able to determine if the concentrations of constituents in the new wells were consistent with site background.
After applying the foregoing approach, INTERA concluded that the new monitoring wells were not impacted by Mill activities. INTERA also concluded that the new well groundwater monitoring results were consistent with the existing well results provided in the Existing Well Background Report and consistent with the pre-operational and regional well, seep and spring results provided in the Regional Background Report. INTERA noted some detections of chloroform and related organic contamination and
degradation products and nitrate and nitrite in the new wells, which are the subject of separate investigations and corrective actions, but that such contamination was the result of pre-Mill activities. Corrective actions
for nitrate and chloroform, respectively, are described in: Nitrate Corrective Action Plan (CAP), [HGC, 2012a]; and Groundwater Corrective Action Plan (GCAP) found in Attachment 1, of the final Stipulation and Consent Order Docket No. UGW20-01, approved on September 14, 2015 by the Utah Department of Environmental Quality Division of Waste Management and Radiation Control (DWMRC) [Utah Department of Environmental Quality Division of Solid Waste and Radiation Control, 2015]).
Given its conclusion that there were no impacts to groundwater from Mill activities, INTERA concluded that the proposed GWCLs for new wells set out in Table 10 of the New Well Background Report were appropriate, and indicative of background perched groundwater quality. Again, INTERA noted that GWCLs for trending constituents should be re-evaluated upon GWDP renewal to determine if they are still
appropriate at the time of renewal.
Subsequent investigation of nitrate delineated the nitrate plume and indicated that ammonium sulfate
handling in the vicinity of the ammonium sulfate crystal tanks (southeast of well TWN-2) is potentially a source of nitrate to the nitrate plume. There are no known current unidentified or unaddressed sources of the nitrate plume. There appear to have been a number of known and potential historical sources; however,
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it has not been possible to confirm or quantify the contribution of each source. The conclusion that there were no impacts to perched groundwater from Mill activities has therefore been modified to include a potential contribution to the nitrate plume from Mill and non-mill sources. However, the conclusion that
there have been no impacts to perched groundwater from the tailings management system operation is valid.
During the course of discussions with EFRI staff, and further DWMRC review, DWMRC supplemented
the analysis provided in the Background Reports by commissioning the University of Utah to perform a geochemical and isotopic groundwater study at the Mill, described in Summary of work completed, data
results, interpretations and recommendations for the July 2007 Sampling Event at the Denison Mines, USA,
White Mesa Uranium Mill Near Blanding Utah, May 2008, prepared by T. Grant Hurst and D. Kip Solomon, Department of Geophysics, University of Utah (the “University of Utah Study” [University of Utah, 2008]). The purpose of the University of Utah Study was to evaluate whether the increasing and elevated trace metal concentrations (such as uranium) found in the monitoring wells at the Mill were due to potential leakage from the on-site tailings management cells. To investigate this potential problem, the study examined groundwater flow, chemical composition, noble gas and isotopic composition, and age of
the on-site groundwater. Similar evaluations were also made on samples of the tailings wastewater and nearby surface water stored in the northern wildlife ponds at the facility. Fieldwork for the University of
Utah Study was conducted July 17 - 26, 2007. The conclusions in the University of Utah Study supported EFRI’s conclusions in the Background Reports that tailings management cells had not impacted groundwater.
Upon approval of the GWDP in 2010, constituents with two consecutive GWCL exceedances were subject to a Source Assessment Report (SAR) as defined in the GWDP. The initial SAR was submitted in October of 2012 (INTERA 2012a) and covered the constituents in wells with consecutive exceedances since the approval of the GWDP in 2010. The October 2012 SAR (INTERA 2012a) presented a geochemical analysis of parameters that exhibited exceedances as well as an analysis of the indicator parameters in each of those wells to determine if the exceedance could be related to potential tailings seepage or Mill-related
activities. Since then, additional SARs that include INTERA 2013a, 2013b, 2014a, 2014b, and 2015 cover additional consecutive exceedances. In all cases the exceedances for which the SARs were performed were
determined to result from naturally occurring conditions in the groundwater at the site or from other factors that are affecting groundwater but are unrelated to Mill operation. These other factors include the nitrate/chloride plume that is addressed by the nitrate CAP and the site-wide decline in pH that was identified at the time of the Background Report.
With regard to the decline in pH, background analysis and determination of GWCLs for pH were performed using laboratory pH measurements rather than using measurements that are collected in the field at the time of sampling by using a pH probe. Since the latter of these two methods of measuring pH is more reliable, an additional pH analysis was performed in 2012 using only field data. GWCLs for pH were recalculated at this time using the field measurements (INTERA, 2012b). EFRI compared the Mill’s groundwater pH
data from the second quarter of 2011 and noted that all of the June 2011 groundwater results, and many of the other results from the second quarter of 2011, were already outside the revised GWCLs that were to be
proposed. Pursuant to teleconferences with DWMRC on December 5, and December 19, 2011, EFRI submitted a Work Plan and Schedule on January 20, 2012 and a revised plan based on DWMRC comments on April 13, 2012. Based on the approved Work Plan and Time Schedule, EFRI and DWMRC entered into a Stipulated Consent Agreement (“SCA”) dated July 12, 2012. The SCA required the completion of the pH Report (INTERA, 2012b) and the Pyrite Investigation and associated report (HGC, 2012c). The pH Report and Pyrite Investigation Report were submitted to DWMRC on November 9, 2012 and December 7, 2012 respectively. By letter dated April 25, 2013, DWMRC accepted the conclusions that the out-of-
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compliance results for pH are due to background effects within the aquifer matrix and are not caused by Mill activities. DWMRC also approved the recalculation of the GWCLs.
HGC (2012c) determined that pH decreases resulted primarily from pyrite oxidation enhanced by oxygen
delivery to the perched zone. Pyrite exists naturally in the Burro Canyon Formation and Dakota Sandstone, and is present both above and below the perched water table. Oxygen delivery mechanisms include
diffusive and advective gas-phase transport to the Burro Canyon Formation and /or Dakota Sandstone in the vicinities of perched wells via perched well screens, and advective liquid-phase transport dissolved in wildlife pond seepage. HGC (2012c) and HGC (2014) also noted that pyrite may be degraded by nitrate present in the perched water. Pyrite oxidation by either mechanism may release acid and sulfate. The site-wide pH decreases were therefore determined to be unrelated to tailings management cell operation.
1.5.5 Quality of Groundwater at the Compliance Monitoring Point
Analytical results from groundwater sampling are reported quarterly in Groundwater Monitoring Reports, which are filed with the Director pursuant to Part I.F.1 of the GWDP.
1.5.6 Springs and Seeps
As discussed in Section 1.5.1.4, perched groundwater at the Mill site discharges in springs and seeps along Westwater Creek Canyon and Cottonwood Canyon to the west-southwest of the site, and along Corral Canyon to the east of the site, where the Burro Canyon Formation outcrops. Water samples have been collected and analyzed from springs and seeps in the Mill vicinity as part of the baseline field investigations reported in the 1978 ER (See Table 2.6-6 in Dames & Moore, 1978).
During the period 2003-2004, EFRI implemented a sampling program for seeps and springs in the vicinity of the Mill which had been sampled in 1978, prior to the Mill’s construction. Four locations were designated for sampling (shown on Figure 1.5-8). These are Ruin Spring (G3R), Cottonwood Seep (G4R), west of Westwater Creek (G5R) and Corral Canyon (G1R). During the 2-year study period only two of the
four locations were able to be sampled, Ruin Spring and Cottonwood Canyon. The other two locations, Corral Creek and the location west of Westwater Creek were not flowing (seeping) and samples could not
be collected. With regard to the Cottonwood seep, while water was present, the volume was not sufficient to complete all determinations, and only organic analyses were conducted. The results of the organic analysis did not detect any detectable organics.
Samples at Ruin Spring were analyzed for major ions, physical properties, metals, radionuclides, volatile and semi-volatile organic compounds, herbicides and pesticides, and synthetic organic compounds. With the exception of one chloromethane detection, organic determinations were at less than detectable concentrations and are not shown in Table 1.5-3. The detection of chloromethane is not uncommon in groundwater and can be due to natural sources. In fact, chloromethane has been observed by EFRI at detectable concentrations in field blank samples during routine groundwater sampling events.
The results of the 2003/2004 sampling for the other parameters tested are shown in Table 1.5-3. The results of the sampling did not indicate the presence of Mill-derived groundwater constituents and are representative of background conditions.

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Table 1.5-3 Results of Quarterly Sampling Ruin Spring (2003-2004)
Parameter Ruin Spring
Q1-03 Q2-03 Q3-03 Q4-3 Q1-04 Q2-04 Q3-04 Q4-04
Major Ions (mg/L)
Alkalinity - - 196 198 193 191 195 183
Carbon Dioxide - - ND ND ND ND 12 ND Carbonate - - ND ND ND ND ND ND Bicarbonate - - 239 241 235 232 238 223 Hydroxide - ND ND ND ND ND ND Calcium 153 156 149 158 158 162 176 186 Chloride 28.1 21.5 27.4 28.0 29.3 28.5 26 25 Fluoride - - ND 0.5 0.5 0.6 0.6 0.6 Magnesium 34.8 34.2 31.7 34.2 35.8 35.1 37.1 38.6 Nitrogen, Ammonia As N ND ND ND ND ND 0.06 ND 0.06 Nitrogen, Nitrate+Nitrite as N 1.6 1.5 1.4 1.4 1.73 1.85 1.34 1.7 Phosphorous 0.10 ND - ND ND ND ND ND Potassium 2.6 3.3 3.3 3.9 3.4 3.6 4.0 3.7 Sodium 110 105 103 113 104 110 113 116 Sulfate 503 501 495 506 539 468 544 613 Physical Properties Conductivity (umhos/cm) - - 1440 1410 1390 1440 1320 1570 pH - - 7.91 7.98 - - - TDS (mg/L) - - 1040 1000 1050 1110 1050 1070 TSS (mg/L) - - 13.5 ND ND ND ND ND Turbidity (NTU) - - 0.16 0.13 ND 0.12 - -
Metals-Dissolved (mg/L) Aluminum ND ND 0.40 ND ND ND ND ND
Antimony ND ND ND ND ND ND ND ND
Arsenic 0.001 ND ND 0.001 ND ND ND ND
Barium ND ND ND ND ND ND ND ND
Beryllium ND ND ND ND ND ND ND ND
Cadmium ND ND ND ND ND ND ND ND

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Table 1.5-3 Results of Quarterly Sampling Ruin Spring (2003-2004) (continued)
Parameter Ruin Spring
Q1-03 Q2-03 Q3-03 Q4-3 Q1-04 Q2-04 Q3-04 Q4-04
Major Ions (mg/L)
Chromium ND ND ND ND ND ND ND ND
Copper ND ND 0.082 ND ND ND ND ND
Iron ND ND ND ND ND ND ND ND Lead ND ND ND ND ND ND ND ND Manganese ND ND ND ND ND ND ND ND Mercury ND ND ND ND ND ND ND ND Molybdenum ND ND ND ND ND ND ND ND Nickel ND ND ND ND ND ND ND ND Selenium 0.013 0.012 0.012 0.012 0.012 0.012 0.012 0.012 Silver ND ND ND ND ND ND ND ND Thallium ND ND ND ND ND ND ND ND Uranium 0.009 0.011 0.010 0.010 0.011 0.011 0.009 0.010 Vanadium ND ND ND ND ND ND ND ND Zinc 0.014 ND ND ND ND ND ND ND Radionuclides (pCi/L) Gross Alpha Minus Rn & U - - - - ND ND 1.4 ND Lead 210 42 ND ND ND ND ND ND ND Radium 226 0.3 ND 0.3 ND ND ND 1.3 ND Thorium 230 0.3 0.2 0.5 ND ND ND 0.4 ND Thorium 232 - - ND ND ND ND ND - Thorium 228 - - ND ND ND ND - - Source: Table 3.7-9 of 2007 ER.

During 2009, the Mill implemented an annual sampling program for seeps and springs. The seeps and springs sampling program is included in the Sampling Plan for Seeps and Springs in the Vicinity of the White Mesa Uranium Mill Revision: 0, March 17, 2009 (and as submitted to UDEQ for approval, Draft Sampling Plan for Seeps and Springs, Revision 1, June 10, 2011). The annual sampling program for seeps and springs requires sampling once per year at the four seeps and springs described above, plus a fifth seep, Corrals Seep, to the extent water flow is sufficient for sampling. Samples were collected in July 2009;
August and November 2010; May and July 2011, June 2012, July 2013, June 2014; and June 2015. Under the Plan only springs and seeps that had sufficient water flow were selected for sampling. The results of
the annual sampling are shown in Table 1.5-4.

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Table 1.5-4 Seeps and Springs Sampling
Constituent Ruin Spring Ruin Spring Duplicate Cottonwood Spring Entrance Spring Dup Westwater Seep
Major Ions (mg/L) 9 10 11 12 13 14 15 9 10 11 9 10 11 12 13 14 15 9 10 11 12 13 14 15 15 9 10 11 12 13 14 15
Carbonate ND <1 1 <1 <1 <1 <1 ND <1 2 ND <1 6 <1 <1 <1 <1 ND <1 7 <1 <1 <1 <1 <1 <1 <1 <1
Not Sampled - Dry
Not Sampled - Dry
Not Sampled - Dry
<1
Bicarbonate 233 254 239 237 208 204 200 232 254 236 316 340 316 326 280 251 271 292 332 299 298 292 247 324 326 465 450 371 359
Calcium 151 136 148 147 149 150 162 149 137 147 90.3 92.2 94.2 101 87.9 99.7 111 90.8 96.5 96.6 105 121 103 131 132 191 179 247 150
Chloride 28 23 44 28 26.3 27.1 27.4 27 23 27 124 112 134 149 118 128 133 60 63 64 78 139 76.8 75.6 75.3 41 40 21 32.6
Fluoride 0.5 0.53 0.5 0.52 0.538 <1 0.445 0.5 0.51 0.49 0.4 0.38 0.38 0.38 0.417 <1 0.318 0.7 0.73 0.58 0.64 0.71 <1 0.606 0.6 0.7 0.6 0.54 0.424
Magnesium 32.3 29.7 31.1 31.9 32.1 35.4 31.8 31.6 30.4 30.9 25 24.8 25.2 27.7 23.6 29.0 27.5 26.6 28.9 28.4 32.7 43 34.9 33.3 33.7 45.9 44.7 34.7 34
Nitrogen, Ammonia As N 0.09 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 ND <0.05 <0.05 ND <0.05 <0.05 <0.05 <0.05 <0.05 0.0512 0.28 <0.05 0.32 <0.05 <0.05 <0.05 0.202 0.139 <0.05 0.5 0.06 0.123
Nitrogen, Nitrate+Nitrite as N 1.4 1.7 1.6 1.6 1.56 1.54 1.31 1.4 1.7 1.7 0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 1.4 1 0.5 2.8 2.06 3.65 <0.1 0.276 0.8 <0.1 <0.1 <0.1
Potassium 3.3 3.07 3.3 3.5 3.46 3.24 3.14 3.2 3.08 3.3 5.7 5.77 5.9 6.2 5.53 6.18 5.91 2.4 2.74 2.9 2 3.83 1.56 1.62 1.72 1.19 6.57 3.9 1.98
Sodium 104 93.4 111 115 118 119 126 103 97.4 108 205 214 227 247 217 227 251 61.4 62.7 68.6 77.4 127 78.9 93.1 93.8 196 160 112 139
Sulfate 528 447 484 464 553 553 528 520 444 483 383 389 389 256 403 417 442 178 179 171 171 394 219 210 214 646 607 354 392
Physical Properties
pH 7.85 7.51 8.14 7.53 7.27 7.7 7.55 8.1 7.73 7.47 8.04 7.53 7.30 7.85 7.56 8.17 7.5 6.57 8.01 7.38 7.2 Not Sampled - Dry 7.24
TDS (mg/L) 1010 903 905 1000 952 984 1000 996 950 911 1010 900 978 1040 996 968 1020 605 661 582 660 828 688 680 708 1370 1270 853 896
Metals-Dissolved (ug/L)
Arsenic ND <5 <5 <5 <5 <5 <5 ND <5.0 <5.0 ND <5 <5 <5 <5 <5 <5 ND <5 <5 <5 <5 <5 5.02 5.02 <5 <5 12.3
Not Sampled - Dry
Not Sampled - Dry
Not Sampled - Dry
<5.0
Beryllium ND < 0.5 < 0.5 <0.5 <0.5 <0.5 <0.5 ND <0.05 <0.05 ND <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 ND <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 0.91 <0.5
Cadmium ND <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 ND <0.05 <0.05 ND <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 ND <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 0.9 <0.5
Chromium ND <25 <25 <25 <25 <25 <25 ND <25 <25 ND <25 <25 <25 <25 <25 <25 ND <25 <25 <25 <25 <25 <25 <25 <25 <25 <25 <25
Cobalt ND <10 <10 <10 <10 <10 <10 ND <10 <10 ND <10 <10 <10 <10 <10 <10 ND <10 <10 <10 <10 <10 <10 <10 <10 <10 <10 <10
Copper ND <10 <10 <10 <10 <10 <10 ND <10 <10 ND <10 <10 <10 <10 <10 <10 ND <10 <10 <10 <10 <10 <10 <10 <10 <10 16 <10
Iron ND <30 <30 <30 <30 <30 <30 ND 36 36 ND <30 <30 <30 <30 <30 <30 ND <30 55 34 162 37.2 295 298 89 56 4540 <30
Lead ND <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 ND <1.0 <1.0 ND <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 ND <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 41.4 <1.0
Manganese ND <10 <10 <10 <10 <10 <10 ND <10 <10 ND <10 <10 <10 <10 <10 <10 54 11 84 <10 259 16.1 367 371 37 87 268 171
Mercury ND <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 ND <0.05 <0.05 ND <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 ND <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5
Molybdenum 17 17 17 16 16.1 16.0 18.3 17 17 17 ND <10 <10 <10 <10 <10 <10 ND <10 <10 <10 <10 <10 <10 <10 29 29 <10 <10
Nickel ND <20 <20 <20 <20 <20 <20 ND <20 <20 ND <20 <20 <20 <20 <20 <20 ND <20 <20 <20 <20 <20 <20 <20 <20 <20 29 <20

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Table 1.5-4 Seeps and Springs Sampling (continued)
Constituent Ruin Spring Ruin Spring Duplicate Cottonwood Spring Entrance Spring Dup Westwater Seep
Metals-Dissolved (mg/L) 9 10 11 12 13 14 15 9 10 11 9 10 11 12 13 14 15 9 10 11 12 13 14 15 15 9 10 11 12 13 14 15
Selenium 12.2 10 10.2 10.8 10.2 12.0 10 12.3 9.5 9.7 ND <5.0 <5.0 <5.0 <5.0 <5.0 <5 12.1 9.2 5.5 13.2 11.2 15.9 <0.5 <5 <5.0 <5.0 <5.0

<5.0
Silver ND <10 <10 <10 <10 <10 <10 ND <10 <10 ND <10 <10 <10 <10 <10 <10 ND <10 <10 <10 <10 <10 <10 <10 <10 <10 <10 <10
Thallium ND <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 ND <0.5 <0.5 ND <0.5 <0.5 <0.5 <0.5 <0.5 <5 ND <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5
Tin ND <100 <100 <100 <100 <100 <100 ND <100 <100 ND <100 <100 <100 <100 <100 <100 ND <100 <100 <100 <100 <100 <100 <100 <100 <100 <100 <100
Uranium 9.11 8.47 8.63 8.68 9.12 9.61 9.03 9 8.52 8.28 8.42 8.24 8.68 8.17 8.95 9.62 9.12 15.2 17.8 15.3 21.1 38.8 23.2 36 36.1 15.1 46.6 6.64 2.1
Vanadium ND <15 <15 <15 <15 <15 <15 ND <15 <15 ND <15 <15 <15 <15 <15 <15 ND <15 <15 <15 <15 <15 <15 <15 <15 <15 34 <15
Zinc ND <10 <10 <10 <10 <10 <10 ND <10 <10 ND <10 <10 <10 <10 <10 <10 ND <10 <10 <10 <10 <10 <10 <10 <10 <10 28 <10
Radionuclides (pCi/L)
Gross Alpha Minus Rn & U <0.2 <0.2 <-0.05 <-0.09 <1.0 <1 <1.0 -0.02 <0.3 <-0.1 0.3 <0.2 <-0.1 <-0.2 <1.0 <1.0 <1.0 0.9 <0.5 1.6 0.5 2.3 <1 3.05 3.11 < -0.1 <0.3 0.5 Not Sampled - Dry
Not Sampled - Dry
Not Sampled - Dry <1.0
Volatile Organic Compounds (ug/L)
Acetone ND ND ND <20 <20 <20 <20 ND ND ND ND ND ND <20 <20 <20 <20 ND ND ND <20 <20 <20 <20 ND ND ND ND
Not Sampled - Dry
Not Sampled - Dry
Not Sampled - Dry
<20
Benzene ND ND ND <1.0 <1.0 <1.0 <1.0 ND ND ND ND ND ND <1.0 <1.0 <1.0 <1.0 ND ND ND <1.0 <1.0 <1.0 <1.0 ND ND ND ND <1.0
Carbon tetrachloride ND ND ND <1.0 <1.0 <1.0 <1.0 ND ND ND ND ND ND <1.0 <1.0 <1.0 <1.0 ND ND ND <1.0 <1.0 <1.0 <1.0 ND ND ND ND <1.0
Chloroform ND ND ND <1.0 <1.0 <1.0 <1.0 ND ND ND ND ND ND <1.0 <1.0 <1.0 <1.0 ND ND ND <1.0 <1.0 <1.0 <1.0 ND ND ND ND <1.0
Chloromethane ND ND ND <1.0 <1.0 <1.0 <1.0 ND ND ND ND ND ND <1.0 <1.0 <1.0 <1.0 ND ND ND <1.0 <1.0 <1.0 <1.0 ND ND ND ND <1.0
MEK ND ND ND <20 <20 <20 <20 ND ND ND ND ND ND <20 <20 <20 <20 ND ND ND <20 <20 <20 <20 ND ND ND ND <20
Methylene Chloride ND ND ND <1.0 <1.0 <1.0 <1.0 ND ND ND ND ND ND <1.0 <1.0 <1.0 <1.0 ND ND ND <1.0 <1.0 <1.0 <1.0 ND ND ND ND <1.0
Naphthalene ND ND ND <1.0 <1.0 <1.0 <1.0 ND ND ND ND ND ND <1.0 <1.0 <1.0 <1.0 ND ND ND <1.0 <1.0 <1.0 <1.0 ND ND ND ND <1.0
Tetrahydrofuran ND ND ND <1.0 <1.0 <1.0 <1.0 ND ND ND ND ND ND <1.0 <1.0 <1.0 <1.0 ND ND ND <1.0 <1.0 <1.0 <1.0 ND ND ND ND <1.0
Toluene ND ND ND <1.0 <1.0 <1.0 <1.0 ND ND ND ND ND ND <1.0 <1.0 <1.0 <1.0 ND ND ND <1.0 <1.0 1.32 <1.0 ND ND ND ND <1.0
Xylenes ND ND ND <1.0 <1.0 <1.0 <1.0 ND ND ND ND ND ND <1.0 <1.0 <1.0 <1.0 ND ND ND <1.0 <1.0 <1.0 <1.0 ND ND ND ND <1.0
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1.5.7 Groundwater Appropriations Within a Five Mile Radius
Two hundred sixty one groundwater appropriation applications, within a five-mile radius of the Mill site, are on file with the Utah State Engineer's office. A summary of the applications is presented in Table 1.5-
5 and shown on Figure 1.5-9. The majority of the applications are by private individuals and for wells drawing small, intermittent quantities of water, less than eight gpm, from the Burro Canyon formation. For
the most part, these wells are located upgradient (north) of the Mill site. Domestic water, stock watering, and irrigation are listed as primary uses of the majority of the wells. It is important to note that no water supply wells completed in the perched groundwater of the Burro Canyon formation exist directly downgradient of the site within the five-mile radius. Two water supply wells, which available data indicate are completed in the Entrada/Navajo sandstone, exist approximately 4.5 miles southeast of the site on the Ute Mountain Ute Reservation. These wells supply domestic water for the Ute Mountain Ute White Mesa Community, situated on the mesa along Highway 191 (see Figure 1.5-9). Data supplied by the Tribal Environmental Programs Office indicate that both wells are completed in the Entrada/Navajo sandstone, which is approximately 1,200 feet below the ground surface. Insufficient data are available to define the
groundwater flow direction in the Entrada/Navajo sandstone in the vicinity of the Mill.
The yield from wells completed in the Burro Canyon formation within the White Mesa site is generally
lower than that obtained from wells in this formation upgradient of the site. For the most part, the documented sustainable pumping rates from on-site wells completed in the Burro Canyon formation are typically less than 1/2 gpm. Even at low pumping rates, on-site wells completed in the Burro Canyon formation are typically pumped dry within a couple of hours, and corrective action pumping wells have to be cycled on and off due to the low productivity.
This low productivity suggests that the Mill is located over a peripheral fringe of perched water, with saturated thickness in the perched zone discontinuous and generally decreasing beneath the site, and with
conductivity of the formation being very low. These observations have been verified by studies performed for the U.S. Department of Energy's disposal site at Slick Rock, which noted that the Dakota Sandstone,
Burro Canyon formation, and upper claystone of the Brushy Basin Member are not considered aquifers due to the low permeability, discontinuous nature, and limited thickness of these units (U.S. DOE, 1993).
1.6 Geology
The following text is copied, with minor revisions, from the 1978 ER (Dames and Moore, 1978b). The text has been included here for ease of reference and to provide background information concerning the site geology. 1978 ER subsections used in the following text are shown in parentheses immediately following the subsection titles.
The site is near the western margin of the Blanding Basin in southeastern Utah and within the Monticello uranium-mining district. Thousands of feet of multi-colored marine and non-marine sedimentary rocks have been uplifted and warped, and subsequent erosion has carved a spectacular landscape for which the
region is famous. Another unique feature of the region is the wide-spread presence of unusually large accumulations of uranium-bearing minerals.

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Table 1.5-5 Wells Located Within a 5-Mile Radius of the White Mesa Uranium Mill (Denison, 2009)

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Figure 1.5-9 Ground Water Appropriation Applications Within a 5-Mile Radius

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1.6.1 Regional Geology
The following descriptions of regional physiography; rock units; and structure and tectonics are reproduced from the 1978 ER for ease of reference and as a review of regional geology.
1.6.1.1 Physiography (1978 ER Section 2.4.1.1)
The Mill site lies within the Canyon Lands section of the Colorado Plateau physiographic province. To the north, this section is distinctly bounded by the Book Cliffs and Grand Mesa of the Uinta Basin; western margins are defined by the tectonically controlled High Plateaus section, and the southern boundary is arbitrarily defined along the San Juan River. The eastern boundary is less distinct where the elevated
surface of the Canyon Lands section merges with the Southern Rocky Mountain province.
Canyon Lands has undergone epeirogenic uplift and subsequent major erosion has produced the region's characteristic angular topography reflected by high plateaus, mesas, buttes, structural benches, and deep canyons incised into flat-laying sedimentary rocks of pre-Tertiary age. Elevations range from approximately 3,000 feet (914 meters) in the bottom of the deeper canyons along the southwestern margins of the section to more than 11,000 feet (3,353 meters) in the topographically anomalous laccolithic Henry, Abajo and La Sal Mountains to the northeast. Except for the deeper canyons and isolated mountain peaks, an average elevation in excess of 500 feet (1,524 meters) persists over most of the Canyon Lands section.
On a more localized regional basis, the Mill site is located near the western edge of the Blanding Basin,
sometimes referred to as the Great Sage Plain (Eardly, 1958), lying east of the north-south trending Monument Uplift, south of the Abajo Mountains and adjacent to the northwesterly-trending Paradox Fold
and Fault Belt (Figure 1.6-1). Topographically, the Abajo Mountains are the most prominent feature in the region, rising more than 4,000 feet (1,219 meters) above the broad, gently rolling surface of the Great Sage Plain.
The Great Sage Plain is a structural slope, capped by the resistant Burro Canyon formation and the Dakota Sandstone, almost horizontal in an east-west direction but descends to the south with a regional slope of about 2,000 feet (610 meters) over a distance of nearly 50 miles (80 kilometers). Though not as deeply or intricately dissected as other parts of the Canyon Lands, the plain is cut by numerous narrow and vertical-walled south-trending valleys 100 to more than 500 feet (30 to 152+ meters) deep. Water from the intermittent streams that drain the plain flow southward to the San Juan River, eventually joining the
Colorado River and exiting the Canyon Lands section through the Grand Canyon.
1.6.1.2 Rock Units (1978 ER Section 2.4.1.1)
The sedimentary rocks exposed in southeastern Utah have an aggregate thickness of about 6,000 to 7,000 feet (1,829 to 2,134 meters) and range in age from Pennsylvanian to Late Cretaceous. Older unexposed rocks are known mainly from oil well drilling in the Blanding Basin and Monument Uplift. These wells
have encountered correlative Cambrian to Permian rock units of markedly differing thicknesses but averaging over 5,000 feet (1,524 meters) in total thickness (Witkind, 1964). Most of the wells drilled in
the region have bottomed in the Pennsylvanian Paradox Member of the Hermosa formation. A generalized stratigraphic section of rock units ranging in age from Cambrian through Jurassic and Triassic (?), as determined from oil-well logs, is shown in Table 1.6-1. Descriptions of the younger rocks, Jurassic through Cretaceous, are based on field mapping by various investigators and are shown in Table 1.6-2.
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Insert
Figure 1.6-1 Colorado Plateau Geology Map (Adapted from the 2007 ER, Figure 3.4-1)

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Table 1.6-1 Generalized Stratigraphic Section of Subsurface Rocks Based on Oil-Well Logs (Table 2.6-1 UMETCO)

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Table 1.6-2 Generalized Stratigraphic Section of Exposed Rocks in the Project Vicinity (Table 2.6-2 UMETCO)

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Paleozoic rocks of Cambrian, Devonian and Mississippian ages are not exposed in the southeastern Utah region. Most of the geologic knowledge regarding these rocks was learned from the deeper oil wells drilled in the region, and from exposures in the Grand Canyon to the southwest and in the Uinta and Wasatch
Mountains to the north. A few patches of Devonian rocks are exposed in the San Juan Mountains in southwestern Colorado. These Paleozoic rocks are the result of periodic transgressions and regressions of
epicontinental seas and their lithologies reflect a variety of depositional environments.
In general, the coarse-grained feldspathic rocks overlying the Precambrian basement rocks grade upward into shales, limestones and dolomites that dominate the upper part of the Cambrian. Devonian and Mississippian dolomites, limestones and interbedded shales unconformably overlay the Cambrian strata. The complete absence of Ordovician and Silurian rocks in the Grand Canyon, Uinta Mountains, southwest Utah region and adjacent portions of Colorado, New Mexico and Arizona indicate that the region was probably epeirogenically positive during these times.
The oldest stratigraphic unit that crops out in the region is the Hermos formation of Middle and Late Pennsylvanian age. Only the uppermost strata of this formation are exposed, the best exposure being in the
canyon of the San Juan River at the "Goosenecks" where the river traverses the crest of the Monument uplift. Other exposures are in the breached centers of the Lisbon Valley, Moab and Castle Valley anticlines.
The Paradox Member of the Hermosa formation is sandwiched between a relatively thin lower unnamed member consisting of dark-gray shale siltstone, dolomite, anhydrite, and limestone, and an upper unnamed member of similar lithology but having a much greater thickness. Composition of the Paradox Member is dominantly a thick sequence of interbedded slate (halite), anhydrite, gypsum, and black shale. Surface exposures of the Paradox in the Moab and Castle Valley anticlines are limited to contorted residues of gypsum and black shale.
Conformably overlying the Hermosa is the Pennsylvanian and Permian (?) Rico formation, composed of
interbedded reddish-brown arkosic sandstone and gray marine limestone. The Rico represents a transition zone between the predominantly marine Hermosa and the overlying continental Cutler formation of
Permian age.
Two members of the Cutler probably underlying the region south of Blanding are, in ascending order, the Cedar Mesa Sandstone and the Organ Rock Tongue. The Cedar Mesa is a white to pale reddish-brown, massive, cross-bedded, fine- to medium-grained eolian sandstone. An irregular fluvial sequence of reddish-brown fine-grained sandstones, shaly siltstones and sandy shales comprise the Organ Rock Tongue.
The Moenkopi formation, of Middle (?) and Lower Triassic age, unconformably overlies the Cutler strata. It is composed of thin, evenly-bedded, reddish to chocolate-brown, ripple-marked, cross-laminated siltstone and sandy shales with irregular beds of massive medium-grained sandstone.
A thick sequence of complex continental sediments known as the Chinle formation unconformably overlies
the Moenkopi. For the purpose of making lithology correlations in oil wells this formation is divided into three units: The basal Shinarump Member, the Moss Back Member and an upper undivided thick sequence
of variegated reddish-brown, reddish- to greenish-gray, yellowish-brown to light-brown bentonitic claystones, mudstones, sandy siltstone, fine-grained sandstone, and limestones. The basal Shinarump is dominantly a yellowish-grey, fine- to coarse-grained sandstone, conglomeratic sandstone and conglomerate characteristically filling ancient stream channel scours eroded into the Moenkopi surface. Numerous uranium deposits have been located in this member in the White Canyon mining district to the west of Comb Ridge. The Moss Back is typically composed of yellowish- to greenish-grey, fine- to medium-grained sandstone, conglomeratic sandstone and conglomerate. It commonly comprises the basal unit of
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the Chinle where the Shinarump was not deposited, and in a like manner, fills ancient stream channels scoured into the underlying unit.
In the Blanding Basin the Glen Canyon Group consists of three formations which are, in ascending order,
the Wingate Sandstone, the Kayenta and the Navajo Sandstone. All are conformable and their contacts are gradational. Commonly cropping out in sheer cliffs, the Late Triassic Wingate Sandstone is typically
composed of buff to reddish-brown, massive, cross-bedded, well-sorted, fine-grained quartzose sandstone of eolian origin. Late Triassic (?) Kayenta is fluvial in origin and consists of reddish-brown, irregularly to cross-bedded sandstone, shaly sandstone and, locally, thin beds of limestone and conglomerate. Light yellowish-brown to light-gray and white, massive, cross-bedded, friable, fine- to medium-grained quartzose sandstone typifies the predominantly eolian Jurassic and Triassic (?) Navajo Sandstone.
Four formations of the Middle to Late Jurassic San Rafael Group unconformably overly the Navajo Sandstone. These strata are composed of alternating marine and non-marine sandstones, shales and mudstones. In ascending order, the formations are the Carmel formation, Entrada Sandstone, Summerville formation, and Bluff Sandstone. The Carmel usually crops out as a bench between the Navajo and Entrada
Sandstones. Typically reddish-brown muddy sandstone and sandy mudstone, the Carmel locally contains thin beds of brown to gray limestone and reddish- to greenish-gray shale. Predominantly eolian in origin,
the Entrada is a massive cross-bedded fine- to medium-grained sandstone ranging in color from reddish-brown to grayish-white that crops out in cliffs or hummocky slopes. The Summerville is composed of regular thin-bedded, ripple-marked, reddish-brown muddy sandstone and sandy shale of marine origin and forms steep to gentle slopes above the Entrada. Cliff-forming Bluff Sandstone is present only in the southern part of the Monticello district thinning northward and pinching out near Blanding. It is a white to grayish-brown, massive, cross-bedded eolian sandstone.
In the southeastern Utah region the Late Jurassic Morrison formation has been divided in ascending order
into the Salt Wash, Recapture, Westwater Canyon, and Brushy Basin Members. In general, these strata are dominantly fluvial in origin but do contain lacustrine sediments. Both the Salt Wash and Recapture consist
of alternating mudstone and sandstone; the Westwater Canyon is chiefly sandstone with some sandy mudstone and claystone lenses, and the heterogenous Brushy Basin consists of variegated bentonitic
mudstone and siltstone containing scattered thin limestone, sandstone, and conglomerate lenses. As strata of the Morrison formation are the oldest rocks exposed in the Mill area vicinity and are one of the two principal uranium-bearing formations in southeast Utah, the Morrison, as well as younger rocks, are described in more detail in Section 1.6.2.2.
The Early Cretaceous Burro Canyon formation rests unconformably (?) on the underlying Brushy Basin Member of the Morrison formation. Most of the Burro Canyon consists of light-colored, massive, cross-bedded fluvial conglomerate, conglomerate sandstone and sandstone. Most of the conglomerates are near
the base. Thin, even-bedded, light-green mudstones are included in the formation and light-grey thin-bedded limestones are sometimes locally interbedded with the mudstones near the top of the formation.
Overlying the Burro Canyon is the Dakota Sandstone of Upper Cretaceous age. Typical Dakota is dominantly yellowish-brown to light-gray, thick-bedded, quartzitic sandstone and conglomeratic sandstone with subordinate thin lenticular beds of mudstone, gray carbonaceous shale and, locally, thin seams of impure coal. The contact with the underlying Burro Canyon is unconformable whereas the contact with the overlying Mancos Shale is gradational from the light-colored sandstones to dark-grey to black shaly siltstone and shale.
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Upper Cretaceous Mancos Shale is exposed in the region surrounding the project vicinity but not within it. Where exposed and weathered, the shale is light-gray or yellowish-gray, but is dark, to olive-gray where fresh. Bedding is thin and well developed; much of it is laminated.
Quaternary alluvium within the project vicinity is of three types: alluvial silt, sand and gravels deposited in the stream channels; colluvium deposits of slope wash, talus, rock rubble and large displaced blocks on
slopes below cliff faces and outcrops of resistant rock; and alluvial and windblown deposits of silt and sand, partially reworked by water, on benches and broad upland surfaces.
1.6.1.3 Structure and Tectonics (1978 ER Section 2.4.1.3)
According to Shoemaker (1954 and 1956), structural features within the Canyon Lands of southeastern Utah may be classified into three main categories on the basis of origin or mechanism of the stress that
created the structure. These three categories are: (1) structures related to large-scale regional uplifting or downwarping (epeirogenic deformation) directly related to movements in the basement complex (Monument Uplift and the Blanding Basin); (2) structures resulting from the plastic deformation of thick sequences of evaporite deposits, salt plugs and salt anticlines, where the structural expression at the surface is not reflected in the basement complex (Paradox Fold and Fault Belt); and (3) structures that are formed in direct response to stresses induced by magmatic intrusion including local laccolithic domes, dikes and stocks (Abajo Mountains).
Each of the basins and uplifts within the Mill area region is an asymmetric fold usually separated by a steeply dipping sinuous monocline. Dips of the sedimentary beds in the basins and uplifts rarely exceed a
few degrees except along the monocline (Shoemaker, 1956) where, in some instances, the beds are nearly vertical. Along the Comb Ridge monocline, the boundary between the Monument Uplift and the Blanding
Basin, approximately eight miles (12.9 kilometers) west of the Mill area, dips in the Upper Triassic Wingate sandstone and in the Chinle formation are more than 40 degrees to the east.
Structures in the crystalline basement complex in the central Colorado Plateau are relatively unknown but where monoclines can be followed in Precambrian rocks they pass into steeply dipping faults. It is probable that the large monoclines in the Canyon Lands section are related to flexure of the layered sedimentary rocks under tangential compression over nearly vertical normal or high-angle reverse faults in the more rigid Precambrian basement rocks (Kelley, 1955; Shoemaker, 1956; Johnson and Thordarson, 1966).
The Monument Uplift is a north-trending, elongated, upwarped structure approximately 90 miles (145 kilometers) long and nearly 35 miles (56 kilometers) wide. Structural relief is about 3,000 feet (914 meters)
(Kelley, 1955). Its broad crest is slightly convex to the east where the Comb Ridge monocline defines the eastern boundary. The uniform and gently descending western flank of the uplift crosses the White Canyon slope and merges into the Henry Basin (Figure 1.6-1).
East of the Monument Uplift, the relatively equidimensional Blanding Basin merges almost imperceptibly with the Paradox Fold and Fault Belt to the north, the Four Corners Platform to the southeast and the Defiance Uplift to the south. The basin is a shallow feature with approximately 700 feet (213 meters) of structural relief as estimated on top of the Upper Triassic Chinle formation by Kelley (1955), and is roughly 40 to 50 miles (64 to 80 kilometers) across. Gentle folds within the basin trend westerly to northwesterly in contrast to the distinct northerly orientation of the Monument Uplift.
Situated to the north of the Monument Uplift and Blanding Basin is the most unique structural feature of the Canyon Lands section, the Paradox Fold and Fault Belt. This tectonic unit is dominated by northwest trending anticlinal folds and associated normal faults covering an area about 150 miles (241 kilometers)
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long and 65 miles (104 kilometers) wide. These anticlinal structures are associated with salt flowage from the Pennsylvanian Paradox Member of the Hermosa formation and some show piercement of the overlying younger sedimentary beds by plug-like salt intrusions (Johnson and Thordarson, 1966). Prominent valleys
have been eroded along the crests of the anticlines where salt piercements have occurred or collapses of the central parts have resulted in intricate systems of step-faults and grabens along the anticlinal crests and
flanks.
The Abajo Mountains are located approximately 20 miles (32 kilometers) north of the Mill area on the more-or-less arbitrary border of the Blanding Basin and the Paradox Fold and Fault Belt (Figure 1.6-1). These mountains are laccolithic domes that have been intruded into and through the sedimentary rocks by several stocks (Witkind, 1964). At least 31 laccoliths have been identified. The youngest sedimentary rocks that have been intruded are those of Mancos Shale of Late Cretaceous age. Based on this and other vague and inconclusive evidence, Witkind (1964), has assigned the age of these intrusions to the Late Cretaceous or early Eocene.
Nearly all known faults in the region of the Mill area are high-angle normal faults with displacements on
the order of 300 feet (91 meters) or less (Johnson and Thordarson, 1966). The largest known faults within a 40-mile (64 kilometer) radius around Blanding are associated with the Shay graben on the north side of
the Abajo Mountains and the Verdure graben on the south side. Respectively, these faults trend northeasterly and easterly and can be traced for approximate distances ranging from 21 to 34 miles (34 to 55 kilometers) according to Witkind (1964). Maximum displacements reported by Witkind on any of the faults are 320 feet (98 meters). Because of the extensions of Shay and Verdure fault systems beyond the Abajo Mountains and other geologic evidence, the age of these faults is Late Cretaceous or post-Cretaceous and antedate the laccolithic intrusions (Witkind, 1964).
A prominent group of faults is associated with the salt anticlines in the Paradox Fold and Fault Belt. These
faults trend northwesterly parallel to the anticlines and are related to the salt emplacement. Quite likely, these faults are relief features due to salt intrusion or salt removal by solution (Thompson, 1967). Two
faults in this region, the Lisbon Valley fault associated with the Lisbon Valley salt anticline and the Moab fault at the southeast end of the Moab anticline have maximum vertical displacements of at least 5,000 feet
(1,524 meters) and 2,000 feet (609 meters), respectively, and are probably associated with breaks in the Precambrian basement crystalline complex. It is possible that zones of weakness in the basement rocks represented by faults of this magnitude may be responsible for the beginning of salt flowage in the salt anticlines, and subsequent solution and removal of the salt by groundwater caused collapse within the salt anticlines resulting in the formation of grabens and local complex block faults (Johnson and Thordarson, 1966).
The longest faults in the Colorado Plateau are located some 155 to 210 miles (249 to 338 kilometers) west
of the Mill area along the western margin of the High Plateau section. These faults have a north to northeast echelon trend, are nearly vertical and downthrown on the west in most places. Major faults included in this
group are the Hurricane, Toroweap-Sevier, Paunsaugunt, and Paradise faults. The longest fault, the Toroweap-Sevier, can be traced for about 240 miles (386 kilometers) and may have as much as 3,000 feet (914 meters) of displacement (Kelley, 1955).
From the later part of the Precambrian until the middle Paleozoic the Colorado Plateau was a relatively stable tectonic unit undergoing gentle epeirogenic uplifting and downwarping during which seas transgressed and regressed, depositing and then partially removing layers of sedimentary materials. This period of stability was interrupted by northeast-southwest tangential compression that began sometime during late Mississippian or early Pennsylvanian and continued intermittently into the Triassic. Buckling
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along the northeast margins of the shelf produced northwest-trending uplifts, the most prominent of which are the Uncompahgre and San Juan Uplifts, sometimes referred to as the Ancestral Rocky Mountains. Clearly, these positive features are the earliest marked tectonic controls that may have guided many of the
later Laramide structures (Kelley, 1955).
Subsidence of the area southwest of the Uncompahgre Uplift throughout most of the Pennsylvanian led to
the filling of the newly formed basin with an extremely thick sequence of evaporites and associated interbeds which comprise the Paradox Member of the Hermosa formation (Kelley, 1958). Following Paradox deposition, continental and marine sediments buried the evaporite sequence as epeirogenic movements shifted shallow seas across the region during the Jurassic, Triassic and much of the Cretaceous. The area underlain by the Paradox Member in eastern Utah and western Colorado is commonly referred to as the Paradox Basin (Figure 1.6-1). Renewed compression during the Permian initiated the salt anticlines and piercements, and salt flowage continued through the Triassic.
The Laramide orogeny, lasting from Late Cretaceous through Eocene time, consisted of deep-seated compressional and local vertical stresses. The orogeny is responsible for a north-south to northwest trend
in the tectonic fabric of the region and created most of the principal basins and uplifts in the eastern-half of the Colorado Plateau (Grose, 1972; Kelley, 1955).
Post-Laramide epeirogenic deformation has occurred throughout the Tertiary; Eocene strata are flexed sharply in the Grand Hogback monocline, fine-grained Pliocene deposits are tilted on the flanks of the Defiance Uplift, and Pleistocene deposits in Fisher Valley contain three angular unconformaties (Shoemaker, 1956).
1.6.2 Blanding Site Geology
The following descriptions of physiography and topography; rock units; structure; relationship of earthquakes to tectonic structure; and potential earthquake hazards to the Mill area are reproduced from the
1978 ER for ease of reference and as a review of the Mill site geology (see Figure 1.6-2).
1.6.2.1 Physiography and Topography (1978 ER Section 2.4.2.1)
The Mill site is located near the center of White Mesa, one of the many finger-like north-south trending
mesas that make up the Great Sage Plain. The nearly flat upland surface of White Mesa is underlain by resistant sandstone caprock which forms steep prominent cliffs separating the upland from deeply
entrenched intermittent stream courses on the east, south and west.
Surface elevations across the Mill site range from about 5,550 to 5,650 feet (1,692 to 1,722 meters) and the gently rolling surface slopes to the south at a rate of approximately 60 feet per mile (18 meters per 1.6 kilometer).

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Figure 1.6-2 White Mesa Millsite Geology of Surrounding Area

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Maximum relief between the mesa's surface and Cottonwood Canyon on the west is about 750 feet (229 meters) where Westwater Creek joins Cottonwood Wash. These two streams and their tributaries drain the west and south sides of White Mesa. Drainage on the east is provided by Recapture Creek and its tributaries.
Both Cottonwood Wash and Recapture Creeks are normally intermittent streams and flow south to the San Juan River. However, Cottonwood Wash has been known to flow perennially in the project vicinity during
wet years.
1.6.2.2 Rock Units (1978 ER Section 2.4.2.2)
Only rocks of Jurassic and Cretaceous ages are exposed in the vicinity of the Mill site. These include, in ascending order, the Upper Jurassic Salt Wash, Recapture, Westwater Canyon, and Brushy Basin Members of the Morrison formation; the Lower Cretaceous Burro Canyon formation; and the Upper Cretaceous
Dakota Sandstone. The Upper Cretaceous Mancos Shale is exposed as isolated remnants along the rim of Recapture Creek valley several miles southeast of the Mill site and on the eastern flanks of the Abajo
Mountains some 20 miles (32 kilometers) north but is not exposed at the Mill site. However, patches of Mancos Shale may be present within the Mill site boundaries as isolated buried remnants that are obscured by a mantle of alluvial windblown silt and sand.
The Morrison formation is of particular economic importance in southeast Utah since several hundred uranium deposits have been discovered in the basal Salt Wash Member (Stokes, 1967).
In most of eastern Utah, the Salt Wash Member underlies the Brushy Basin. However, just south of Blanding in the project vicinity the Recapture Member replaces an upper portion of the Salt Wash and the
Westwater Canyon Member replaces a lower part of the Brushy Basin. A southern limit of Salt Wash deposition and a northern limit of Westwater Canyon deposition has been recognized by Haynes et al.
(1972) in Westwater Canyon approximately three to six miles (4.8 to 9.7 kilometers), respectively, northwest of the Mill site. However, good exposures of Salt Wash are found throughout the Montezuma Canyon area 13 miles (21 kilometers) to the east.
The Salt Wash Member is composed dominantly of fluvial fine-grained to conglomeratic sandstones, and interbedded mudstones. Sandstone intervals are usually yellowish-brown to pale reddish-brown while the mudstones are greenish- and reddish-gray. Carbonaceous materials ("trash") vary from sparse to abundant. Cliff-forming massive sandstone and conglomeratic sandstone in discontinuous beds make up to 50 percent or more of the member. According to Craig et al. (1955), the Salt Wash was deposited by a system of braided streams flowing generally east and northeast. Most of the uranium-vanadium deposits are located
in the basal sandstones and conglomeratic sandstones that fill stream-cut scour channels in the underlying Bluff Sandstone, or where the Bluff Sandstone has been removed by pre-Morrison erosion, in similar
channels cut in the Summerville formation. Mapped thicknesses of this member range from zero to approximately 350 feet (0-107 meters) in southeast Utah. Because the Salt Wash pinches out in a southerly direction in Recapture Creek three miles (4.8 kilometers) northwest of the Mill site and does not reappear until exposed in Montezuma Canyon, it is not known for certain that the Salt Wash actually underlies the site.
The Recapture Member is typically composed of interbedded reddish-gray, white, and light-brown fine- to medium-grained sandstone and reddish-gray, silty and sandy claystone. Bedding is gently to sharply
lenticular. Just north of the Mill site, the Recapture intertongues with and grades into the Salt Wash and the contact between the two cannot be easily recognized. A few spotty occurrences of uriniferous
mineralization are found in sandstone lenses in the southern part of the Monticello district and larger deposits are known in a conglomeratic sandstone facies some 75 to 100 miles (121 to 161 kilometers)
southeast of the Monticello district. Since significant ore deposits have not been found in extensive
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outcrops in more favorable areas, the Recapture is believed not to contain potential resources in the Mill site (Johnson and Thordarson, 1966).
Just north of the Mill site, the Westwater Canyon Member intertongues with and grades into the lower part
of the overlying Brushy Basin Member. Exposures of the Westwater Canyon in Cottonwood Wash are typically composed of interbedded yellowish- and greenish-gray to pinkish-gray, lenticular, fine- to coarse-
grained arkosic sandstone and minor amounts of greenish-gray to reddish-brown sandy shale and mudstone. Like the Salt Wash, the Westwater Canyon Member is fluvial in origin, having been deposited by streams flowing north and northwest, coalescing with streams from the southwest depositing the upper part of the Salt Wash and the lower part of the Brushy Basin (Huff and Lesure, 1965). Several small and scattered uranium deposits in the Westwater Canyon are located in the extreme southern end of the Monticello district. Both the Recapture Member and the Westwater Canyon contain only traces of carbonaceous materials, are believed to be less favorable host rocks for uranium deposition (Johnson and Thordarson, 1966) and have very little potential for producing uranium reserves.
The lower part of the Brushy Basin is replaced by the Westwater Canyon Member in the Blanding area but
the upper part of the Brushy Basin overlies this member. Composition of the Brushy Basin is dominantly variegated bentonitic mudstone and siltstone. Bedding is thin and regular and usually distinguished by
color variations of gray, pale-green, reddish-brown, pale purple, and maroon. Scattered lenticular thin beds of distinctive green and red chert-pebble conglomeratic sandstone are found near the base of the member, some of which contain uranium-vanadium mineralization in the southernmost part of the Monticello district (Haynes et al., 1972). Thin discontinuous beds of limestone and beds of grayish-red to greenish-black siltstone of local extent suggest that much of the Brushy Basin is probably lacustrine in origin.
For the most part, the Great Sage Plain owes its existence to the erosion of resistant sandstones and conglomerates of the Lower Cretaceous Burro Canyon formation. This formation unconformably (?)
overlies the Brushy Basin and the contact is concealed over most of the Mill area by talus blocks and slope wash. Massive, light-gray to light yellowish-brown sandstone, conglomeratic sandstone and conglomerate
comprise more than two-thirds of the formation's thickness. The conglomerate and sandstone are interbedded and usually grade from one to the other. However, most of the conglomerate is near the base.
These rocks are massive cross-bedded units formed by a series of interbedded lenses, each lens representing a scour filled with stream-deposited sediments. In places the formation contains greenish-gray lenticular beds of mudstone and claystone. Most of the Burro Canyon is exposed in the vertical cliffs separating the relatively flat surface of White Mesa from the canyons to the west and east. In some places the resistant basal sandstone beds of the overlying Dakota Sandstone are exposed at the top of the cliffs, but entire cliffs of Burro Canyon are most common. Where the sandstones of the Dakota rest on sandstones and conglomerates of the Burro Canyon, the contact between the two is very difficult to identify and most investigators map the two formations as a single unit (Figure 1.6-2). At best, the contact can be defined as the top of a silicified zone in the upper part of the Burro Canyon that appears to be remnants of an ancient
soil that formed during a long period of weathering prior to Dakota deposition (Huff and Lesure, 1965).
The Upper Cretaceous Dakota Sandstone disconformably overlies the Burro Canyon formation. Locally, the disconformity is marked by shallow depressions in the top of the Burro Canyon filled with Dakota sediments containing angular to sub-rounded rock fragments probably derived from Burro Canyon strata (Witkind, 1964) but the contact is concealed at the Mill site. The Dakota is composed predominantly of pale yellowish-brown to light gray, massive, intricately cross-bedded, fine- to coarse-grained quartzose sandstone locally well-cemented with silica and calcite; elsewhere it is weakly cemented and friable. Scattered throughout the sandstone are lenses of conglomerate, dark-gray carbonaceous mudstones and shale and, in some instances, impure coal. In general, the lower part of the Dakota is more conglomeratic
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and contains more cross-bedded sandstone than the upper part which in normally more thinly bedded and marine-like in appearance. The basal sandstones and conglomerates are fluvial in origin, whereas the carbonaceous mudstones and shales were probably deposited in back water areas behind beach ridges in
front of the advancing Late Cretaceous sea (Huff and Lesure, 1965). The upper sandstones probably represent littoral marine deposits since they grade upward into the dark-gray siltstones and marine shales
of the Mancos Shale.
The Mancos shale is not exposed in the project vicinity. The nearest exposures are small isolated remnants resting conformably on Dakota Sandstone along the western rim above Recapture Creek 4.3 to 5.5 miles (6.9 to 8.9 kilometers) southeast of the Mill site. Additional exposures are found on the eastern and southern flanks of the Abajo Mountains approximately 16 to 20 miles (26 to 32 kilometers) to the north. It is possible that thin patches of Mancos may be buried at the Mill site but are obscured by the mantle of alluvial windblown silt and sand covering the upland surface. The Upper Cretaceous Mancos shale is of marine origin and consists of dark- to olive-gray shale with minor amounts of gray, fine-grained, thin-bedded to blocky limestone and siltstone in the lower part of the formation. Bedding in the Mancos is thin and well
developed, and much of the shale is laminated. Where fresh, the shale is brittle and fissile and weathers to chips that are light- to yellowish-gray. Topographic features formed by the Mancos are usually subdued
and commonly displayed by low rounded hills and gentle slopes.
A layer of Quaternary to Recent reddish-brown eolian silt and fine sand is spread over the surface of the Mill site. Most of the loess consists of subangular to rounded frosted quartz grains that are coated with iron oxide. Basically, the loess is massive and homogeneous, ranges in thickness from a dust coating on the rocks that form the rim cliffs to more than 20 feet (6 meters), and is partially cemented with calcium carbonate (caliche) in light-colored mottled and veined accumulations which probably represent ancient immature soil horizons.
1.6.2.3 Structure (1978 ER Section 2.4.2.3)
The geologic structure at the Mill site is comparatively simple. Strata of the underlying Mesozoic sedimentary rocks are nearly horizontal; only slight undulations along the caprock rims of the upland are perceptible and faulting is absent. In much of the area surrounding the Mill site the dips are less than one degree. The prevailing regional dip is about one degree to the south. The low dips and simple structure are in sharp contrast to the pronounced structural features of the Comb Ridge Monocline to the west and the Abajo Mountains to the north.
The Mill area is within a relatively tectonically stable portion of the Colorado Plateau noted for its scarcity of historical seismic events. The epicenters of historical earthquakes from 1853 through 1986 within a 200-
mile (320 km) radius of the site are shown in Figure 1.6-3. More than 1,146 events have occurred in the area, of which at least 45 were damaging; that is, having an intensity of VI or greater on the Modified Mercalli Scale. A description of the Modified Mercalli Scale is given in Table 1.6-3. All intensities mentioned herein refer to this table. Table 1.6-3 also shows a generalized relationship between Mercalli intensities and other parameters to which this review will refer. Since these relationships are frequently site specific, the table values should be used only for approximation and understanding. Conversely, the border between the Colorado Plateau and the Basin and Range Province and Middle Rocky Mountain

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Figure 1.6-3 Seismicity Within 320km of the White Mesa Mill

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Table 1.6-3 Modified Mercalli Scale
Modified Mercalli Scale, 1956 Versiona
Intensity Effects v. † cm/s g ‡
M§ I. Not felt. Marginal and long-period effects of large earthquakes (for details see text). 3 II. Felt by persons at rest on upper floors, or favorably placed. III. Felt indoors. Hanging objects swing. Vibration like passing of light trucks. Duration estimated. May not be recognized as an earthquake.
0.0035-0.007
4
IV. Hanging objects swing. Vibration like passing of heavy trucks or sensation of a jolt like a heavy ball striking the walls. Standing motor cars rock. Windows, dishes, doors rattle. Glasses clink. Crockery clashes. In the upper range of IV wooden walls and frame creak.
0.007-0.015
V. Felt outdoors: direction estimated. Sleepers wakened. Liquids disturbed. Some spilled. Small unstable objects displaced or upset. Doors swing close, open. Shutters, pictures move. Pendulum clocks stop, start, change rate.
1-3 0.015-0.035
5
VI. Felt by all. Many frightened and run outdoors. Persons walk unsteadily. Windows, dishes, glassware broken. Knickknacks, books, etc. off shelves. Pictures off walls. Furniture moved or overturned. Weak plaster and masonry D cracked. Small bells ring (church, school). Trees, bushes shaken (visibly, or heard to rustle - CFR).
3-7 0.035-0.07
6
VII. Difficult to stand. Noticed by drivers of motor cars. Hanging objects quiver. Furniture broken. Damage to masonry D including cracks. Weak chimneys broken at roof line. Fall of plaster, loose bricks, stones, tiles, cornices (also unbraced parapets and architectural ornaments - CFR). Some cracks in masonry C. Waves on ponds: water turbid with mud. Small slides and caving in along sand or gravel banks. Large bells ring. Concrete irrigation ditches damaged.
7-20 0.07-0.15
VIII. Steering of motor cars affected. Damage to masonry C; partial collapse. Some damage to masonry B; none is masonry A. Fall of stucco and some masonry walls. Twisting, fall of chimneys, factory stacks, monuments, towers, elevated tanks. Frame houses moved on foundations if not bolted down; loose panel walls thrown out. Decayed piling broken off. Branches broken from trees. Changes in flow or temperature of springs and wells. Cracks in wet ground and on steep slopes.
20-80 0.15-0.35
7
IX. General panic. Masonry D destroyed, masonry C heavily damaged. Sometimes with complete collapse, masonry B seriously damaged. (General damage to foundations - CFR). Frame structures, if not bolted, shifted off foundations. Frames rocked. Serious damage to reservoirs. Underground pipes broken. Conspicuous cracks in ground. In alluviated areas sand and mud ejected, earthquake fountains, sand craters.
.80-200 0.35-0.7
8
X. Most masonry and frame structures destroyed with their foundations. Some well-built wooden structures and bridges destroyed. Serious damage to dams, dikes, embankments. Large landslides. Water thrown on banks of canals, rivers, lakes, etc. Sand and mud shifted horizontally on beaches and flat land. Rails bent slightly.
200-500 0.7-1.2
XI. Rails bent greatly. Underground pipelines completely out of service. >1.2
XII. Damage nearly total. Large rock masses displaced. Lines of sight and level distorted. Objects thrown into the air.
From Fig. 11.14
Note: Masonry A, B, C, D. To avoid ambiguity of language, the quality of masonry, brick or otherwise, is specified by the following lettering (which has no connection with the conventional Class A, B, C construction). · Masonry A : Good workmanship, mortar, and design reinforced, especially laterally, and bound together by using steel, concrete, etc.; designed to resist lateral forces. · Masonry B : Good workmanship and mortar; reinforced, but not designed to resist lateral forces. · Masonry C : Ordinary workmanship and mortar; no extreme weaknesses such as non-ded-ia corners, but masonry is neither reinforced nor designed against horizontal forces. · Masonry D : Week materials such as adobe, poor mortar, low standards of workmanship, week horizontally. aFrom Richter (1958). 1Adapted with permission of W. H. Freeman and Company by Hunt (1984). †Average peak ground velocity, cm/s. ‡Average peak acceleration (away from source). §Magnitude correlation.
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Province some 155 to 240 miles (249 to 386 km) west and northwest, respectively, from the site is one of the most active seismic belts in the western United States.
Only 63 non-duplicative epicenters have been recorded within a 120 mile (200 km) radius of the Mill area
(Figure 1.6-4). Of these, 50 had an intensity IV or less (or unrecorded) and two were recorded as intensity VI. The nearest event occurred in the Glen Canyon National Recreation Area approximately 38 miles (63
km) west-northwest of the Mill area. The next closest event occurred approximately 53 miles (88 km) to the northeast. Just east of Durango, Colorado, approximately 99 miles (159 km) due east of the Mill area, an event having local intensity of V was recorded on August 29, 1941 (Hadsell, 1968). It is very doubtful that these events would have been felt in the vicinity of Blanding.
Three of the most damaging earthquakes associated with the seismic belt along the Colorado Plateau's western border have occurred in the Elsinore-Richfield are about 168 miles (270 km) northwest of the Mill site. All were of intensity VIII. On November 13, 1901, a strong shock caused extensive damage from Richfield to Parowan. Many brick structures were damaged; rockslides were reported near Beaver. Earthquakes with the ejection of sand and water were reported, and some creeks increased their flow.
Aftershocks continued for several weeks (von Hake, 1977). Following several weeks of small foreshocks, a strong earthquake caused major damage in the Monroe-Elsinore-Richfield area on September 29, 1921.
Scores of chimneys were thrown down, plaster fell from ceilings, and a section of a new two-story brick wall collapsed at Elsinore's schoolhouse. Two days later, on October 1, 1921, another strong tremor caused additional damage to the area's structures. Large rockfalls occurred along both sides of the Sevier Valley and hot springs were discolored by iron oxides (von Hake, 1977). It is probable that these shocks may have been perceptible at the Mill site but they certainly would not have caused any damage.
Seven events of intensity VII have been reported within 320 kilometers (km) around Blanding, Utah, which is the area shown in Figure 1.6-3. Of these, only two are considered to have any significance with respect
to the Mill site. On August 18, 1912, an intensity VII shock damaged houses in northern Arizona and was felt in Gallup, New Mexico, and southern Utah. Rock slides occurred near the epicenter in the San
Francisco Mountains and a 50-mile (80 km) earth crack was reported north of the San Francisco Range (Cater, 1970). Nearly every building in Dulce, New Mexico, was damaged to some degree when shook by
a strong earthquake on January 22, 1966. Rockfalls and landslides occurred 10 to 15 miles (16 to 24 km) west of Dulce along Highway 17 where cracks in the pavement were reported (Hermann et al., 1980). Both of these events may have been felt at the Mill site but, again, would certainly not have caused any damage. Figure 1.6-4 shows the occurrence of seismic events within 200 km of Blanding.
1.6.2.4 Relationship of Earthquakes to Tectonic Structures
The majority of recorded earthquakes in Utah have occurred along an active belt of seismicity that extends from the Gulf of California, through western Arizona, central Utah, and northward into western British Columbia. The seismic belt is possibly a branch of the active rift system associated with the landward extension of the East Pacific Rise (Cook and Smith, 1967). This belt is the Intermountain Seismic Belt shown in Figure 1.6-5 (Smith, 1978).
It is significant to note that the seismic belt forms the boundary zone between the Basin and Range - Great Basin Provinces and the Colorado Plateau - Middle Rocky Mountain Provinces. This block-faulted zone
is about 47 to 62 miles (75 to 100 km) wide and forms a tectonic transition zone between the relatively simple structures of the Colorado Plateau and the complex fault-controlled structures of the Basin and
Range Province (Cook and Smith, 1967).

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Figure 1.6-4 Seismicity Within 200km of the White Mesa Mill

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Figure 1.6-5 Seismicity of the Western United States 1950 to 1976

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Another zone of seismic activity is in the vicinity of Dulce, New Mexico, near the Colorado border. This zone, which coincides with an extensive series of tertiary intrusives, may also be related to the northern end of the Rio Grande Rift. This rift is a series of fault-controlled structural depressions extending southward
from southern Colorado through central New Mexico and into Mexico. The rift is shown on Figure 1.6-5 trending north-south to the east of the Mill area.
Most of the events south of the Utah border of intensity V and greater are located within 50 miles (80 km) of post-Oligocene extrusives. This relationship is not surprising because it has been observed in many other parts of the world (Hadsell, 1968).
In Colorado, the Rio Grande Rift zone is one of three siesmotectonic provinces that may contribute energy to the study area. Prominent physiographic expression of the rift includes the San Luis Valley in southern Colorado. The valley is a half-graben structure with major faulting on the eastern flank. Extensional tectonics is dominant in the area and very large earthquakes with recurrence intervals of several thousand years have been projected (Kirkham and Rogers, 1981). Mountainous areas to the west of the Rio Grande rift province include the San Juan Mountains. These mountains are a complex domicia uplift with extensive
Oligocene and Miocene volcanic cover. Many faults are associated with the collapse of the calderas and apparently have not moved since. Faults of Neogene age exist in the eastern San Juan Mountains that may
be related to the extension of the Rio Grande rift. Numerous small earthquakes have been felt or recorded in the western mountainous province despite an absence of major Neogene tectonic faults (Kirkham and Rogers, 1981).
The third seismotectonic province in Colorado, that of the Colorado Plateau, extends into the surrounding states to the west and south. In Colorado, the major tectonic element that has been recurrently active in the Quaternary is the Uncompahgre uplift. Both flanks are faulted and earthquakes have been felt in the area. The faults associated with the Salt Anticlines are collapsed features produced by evaporite solution and
flowage (Cater, 1970). Their non-tectonic origin and the plastic deformation of the salt reduce their potential for generating even moderate-sized earthquakes (Kirkham and Rogers, 1981).
Case and Joesting (1972) have called attention to the fact that regional seismicity of the Colorado Plateau includes a component added by basement faulting. They inferred a basement fault trending northeast along the axis of the Colorado River through Canyonlands. This basement faulting may be part of the much larger structure that Hite (1975) examined and Warner (1978) named the Colorado lineament (Figure 1.6-6). This 1,300-mile (2,100 km) long lineament that extends from northern Arizona to Minnesota is suggested to be a Precambrian wrench-fault system formed some 2.0 to 1.7 billion years before present. While it has been suggested that the Colorado lineament is a source zone for larger earthquakes (m = 4 to 6) in the west-central United States, the observed spatial relationship between epicenters and the trace of the lineament does not prove a casual relation (Brill and Nuttli, 1983). In terms of contemporary seismicity, the lineament
does not act as a uniform earthquake generator. Only specific portions of the proposed structure can presently be considered seismic source zones and each segment exhibits seismicity of distinctive activity
and character (Wong, 1981). This is a reflection of the different orientations and magnitudes of the stress fields along the lineament. The interior of the Colorado Plateau forms a tectonic stress province, as defined by Zoback and Zoback (1980), that is characterized by generally east-west tectonic compression. Only where extensional stresses from the Basin and Range province of the Rio Grande rift extend into the Colorado Plateau would the Colorado lineament in the local area be suspected of having the capability of generating a large magnitude earthquake (Wong, 1984). At present, the well-defined surface expression of regional extension is far to the west and far to the east of the Mill area.

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Figure 1.6-6 Colorado Lineament

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Work by Wong (1984) has helped define the seismicity of the whole Colorado Plateau. He called attention to the low level (less than local magnitude, ML = 3.6) but high number (30) of earthquakes in the Capitol Reef Area from 1978 to 1980 that were associated with the Waterpocket fold and the Cainville monocline,
two other major tectonic features of the Colorado Plateau. Only five earthquakes in the sequence were of ML greater than three, and fault plane solutions suggest the swarm was produced by normal faulting along
northwest-trending Precambrian basement structures (Wong, 1984). The significance of the Capitol Reef seismicity is its relatively isolated occurrence within the Colorado Plateau and its location at a geometric barrier in the regional stress field (Aki, 1979). Stress concentration that produces earthquakes at bends or junctures of basement faults as indicated by this swarm may occur at other locations in the Colorado Plateau Province. No inference that earthquakes such as those at Capitol Reef are precursors for larger subsequent events is implied.
1.6.2.5 Potential Earthquake Hazards to Mill Area
The Mill site is located in a region known for its scarcity of recorded seismic events. Although the seismic history for this region is barely 135 years old, the epicentral pattern, or fabric, is basically set and appreciable changes are not expected to occur. Most of the larger seismic events in the Colorado Plateau occurred along its margins rather than in the interior central region. Based on the region's seismic history, the probability of a major damaging earthquake occurring at or near the Mill site is remote. Studies by Algermissen and Perkins (1976) indicate that southeastern Utah, including the site, is in an area with a 90 percent probability that a horizontal acceleration of four percent gravity (0.04g) would not be exceeded
within 50 years. In 2002, the USGS updated the National Seismic Hazard Maps (NSHM), which show peak ground and spectral accelerations at 2 percent and 10 percent probability of exceedance in 50 years.
From these maps, it is determined that there is a 98 percent probability that a horizontal acceleration of 0.09g would not be exceeded within 50 years (Tetra Tech, 2006). Furthermore, an updated seismic hazard
analysis performed by Tetra Tech (2010) for the site determined that there is a 98 percent probability that a horizontal acceleration of 0.15g would not be exceeded within a 200-year design life of the tailings management cells. The Tetra Tech (2010) report is included in Appendix D.
1.6.3 Site-Specific Probabilistic Seismic Hazard Analysis
A site-specific probabilistic seismic hazard analysis (PSHA) (MWH, 2015a) was conducted for the White Mesa Mill site. The PSHA was performed to better understand the likelihood of potential earthquake sources, to correlate results with previous analyses conducted for the site, and to evaluate the contribution
of the seismic sources (e.g. deaggregation). This analysis assessed the site-specific seismic hazard using Ground Motion Prediction Equations (GMPEs) to estimate seismically induced ground motions at the site.
Seismic hazard analyses were previously conducted for the design of the Cell 4A and 4B facilities (Tetra Tech, 2006; Tetra Tech, 2010) and in response to DWMRC review of EFRI responses to interrogatories on the Reclamation Plan (MWH, 2012). These analyses indicated that the seismic hazard at the site is dominated by background events in the Colorado Plateau.
The PSHA is based on a seismotectonic model and source characterization of the site and surrounding area. The study evaluated a 200-mile radius surrounding the site. The seismotectonic model identified three general seismic sources in the study area: 1) seismicity of the Intermountain Seismic Belt (ISB), 2)
seismicity of the Colorado Plateau (CP), and 3) crustal faults that meet the NRC minimum criteria. Each source zone was characterized to establish input parameters for the seismic hazard analyses. The PSHA
was performed using HAZ43 (2014) software developed by Dr. Norman Abrahamson. Operational and long-term design recommendations were developed based on the results from this PSHA and previous
seismic investigations at the site.
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This study concluded that the maximum horizontal acceleration value at the Mill site for a seismic event associated with an average return period of 10,000 years is 0.15g. Based on this maximum horizontal acceleration, a pseudo-static coefficient of 0.10g was used for seismic stability analyses of the reclaimed
tailings impoundments (presented in Appendix A).
1.7 Biota (1978 ER Section 2.9)
1.7.1 Terrestrial (1978 ER Section 2.9.1)
1.7.1.1 Flora (1978 ER Section 2.9.1.1)
The natural vegetation presently occurring within a 25-mile (40-km) radius of the site is very similar to that of the potential, being characterized by pinyon-juniper woodland intergrading with big sagebrush
(Artemisia tridentata) communities. The pinyon-juniper community is dominated by Utah juniper (Juniperus osteosperma) with occurrences of pinyon pine (Pinus edulis) as a codominant or subdominant tree species. The understory of this community, which is usually quite open, is composed of grasses, forbs, and shrubs that are also found in the big sagebrush communities. Common associates include galleta grass (Hilaria jamesii), green ephedra (Ephedra viridis), and broom snakewood (Gutierrezia sarothrae). The big sagebrush communities occur in deep, well-drained soils on flat terrain, whereas the pinyon-juniper woodland is usually found on shallow rocky soil of exposed canyon ridges and slopes.
Seven community types are present on the Mill site (Table 1.7-1 and Figure 1.7-1). Except for the small portions of pinyon-juniper woodland and the big sagebrush community types, the majority of the plant
communities within the site boundary have been disturbed by past grazing and/or treatments designed to improve the site for rangeland. These past treatments include chaining, plowing, and reseeding with crested
wheatgrass (Agropyron desertorum). Controlled big sagebrush communities are those lands containing big sagebrush that have been chained to stimulate grass production. In addition, these areas have been seeded with crested wheatgrass. Both grassland communities I and II are the result of chaining and/or plowing and seeding with crested wheatgrass. The reseeded grassland II community is in an earlier stage of recovery from disturbance than the reseeded grassland I community. The relative frequency, relative cover, relative density, and importance values of species sampled in each community are presented in Dames and Moore, (1978b), Table 2.8-2. The percentage of vegetative cover in 1977 was lowest on the reseeded grassland II community (10.7 percent) and highest on the big sagebrush community (33 percent) (Table 1.7-2).
Based upon dry weight composition, most communities on the site were in poor range condition in 1977
(Dames & Moore, 1978b, Tables 2.8-3 and 2.8-4). Pinyon-juniper, big sagebrush, and controlled big sagebrush communities were in fair condition. However, precipitation for 1977 at the Mill site was classed
as drought conditions (Dames & Moore, 1978b, Section 2.8.2.1). Until July, no production was evident on the site.
Based on the work completed by Dames & Moore in the 1978 ER, no designated or proposed endangered plant species occur on or near the Mill site (Dames & Moore, 1978b, Section 2.8.2.1). Of the 65 proposed endangered species in Utah at that time, six have documented distributions on San Juan County. A review of the habitat requirements and known distributions of these species by Dames & Moore in the 1978 ER indicated that, because of the disturbed environment, these species would probably not occur on the Mill site. The Navajo Sedge has been added to the list as a threatened species since the 1978 ER.

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Table 1.7-1 Community Types and Expanse Within the Project site Boundary

Expanse
Community Type Ha Acres
Pinyon-juniper Woodland 5 13 Big Sagebrush 113 278
Reseeded Grassland I 177 438
Reseeded Grassland II 121 299
Tamarisk-salix 3 7 Controlled Big Sagebrush 230 569
Disturbed 17 41

Table 1.7-2 Ground Cover For Each Community Within the Project Site Boundary

Percentage of Each Type of Cover
Community Type Vegetative Cover Litter Bare Ground Pinyon-juniper Woodlanda 25.9 15.6 55.6 Big Sagebrush 33.3 16.9 49.9
Reseeded Grassland I 15.2 24.2 61.0
Reseeded Grassland II 10.7 9.5 79.7
Tamarisk-salix 12.0 20.1 67.9 Controlled Big Sagebrush 17.3 15.3 67.4
Disturbed 13.2 7.0 80.0

aRock covered 4.4% of the ground.
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Figure1.7-1 Vegetation Community Types on the White Mesa Mill Site

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In completing the 2002 EA, NRC staff contacted wildlife biologists from the BLM and the Utah Wildlife Service to gather local information on the occurrences of additional species surrounding the Mill. In the 2002 EA, NRC staff concluded that the Navajo Sedge has not been observed in the area surrounding
Blanding, and is typically found in areas of moisture (2002 EA).
In June 2012, the area surrounding the Mill site was surveyed for plant composition to supplement data
presented in Dames & Moore (1978b). Survey results confirmed that two principal plant community types in the vicinity of the Mill site. These plant communities are Big Sagebrush shrubland and Juniper woodland. In addition to these two principal plant community types, there are a number of disturbed areas in different stages of successional development. These areas reflect past disturbances such as sagebrush removal (chaining and plowing) and seeding and intense grazing, as evidenced by a complete lack of any understory species in some areas. The vegetation survey conducted in 2012 provides information of species that exist on the Mill site and their relative importance in terms of plant cover. All areas surveyed in 2012 show that big sagebrush (Artemisia tridentata) is the dominant species and subdominants are either broom snakeweed (Gutierrezia sarothroae) or galleta (Hilaria jamesii). Additional discussion on this survey is
provided in Appendix A.
1.7.1.2 Fauna (1978 ER Section 2.9.1.2)
Wildlife data have been collected through four seasons at several locations on the site. The presence of a species was based on direct observations, trappings and signs such as the occurrence of scat, tracks, or burrows. A total of 174 vertebrate species potentially occur within the vicinity of the mill (Dames & Moore,
1978b, Appendix D), 78 of which were confirmed (Dames & Moore, 1978b, Section 2.8.2.2).
Although seven species of amphibians are thought to occur in the area, the scarcity of surface water limits
the use of the site by amphibians. The tiger salamander (Ambystoma tigrinum) was the only species observed. It appeared in the pinyon-juniper woodland west of the Mill site (Dames & Moore, 1978b, Section 2.8.2.2).
Eleven species of lizards and five snakes potentially occur in the area. Three species of lizards were observed: the sagebrush lizard (Sceloparas graciosus), western whiptail (Cnemidophorus tigris), and the short-horned lizard (Phrynosoma douglassi) (Dames & Moore, 1978b, Section 2.8.2.2). The sagebrush and western whiptail lizard were found in sagebrush habitat, and the short-horned lizard was observed in the grassland. No snakes were observed during the field work.
Fifty-six species of birds were observed in the vicinity of the Mill site (Table 1.7-3). The abundance of
each species was estimated by using modified Emlen transects and roadside bird counts in various habitats and seasons. Only four species were observed during the February sampling. The most abundant species was the horned lark (Eremophila aepestis) followed by the common raven (Corvus corax), which were both concentrated in the grassland. Avian counts increased drastically in May. Based on extrapolation of the Emlen transect data, the avian density on grassland of the Mill site during spring was about 123 per 100 acres (305 per square kilometer). Of these individuals, 94 percent were horned larks and western meadowlarks (Sturnella neglecta). This density and species composition are typical of rangeland habitats. In late June the species diversity declined somewhat in grassland but peaked in all other habitats. By October the overall diversity decreased but again remained the highest in grassland.

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Table 1.7-3 Birds Observed in the Vicinity of the White Mesa Project

Species Relative Abundance and Statusa Species Relative Abundance and Statusa
Mallard CP Pinyon Jay CP
Pintail CP Bushtit CP
Turkey Vulture US Bewick's Wren CP Red-tailed Hawk CP Mockingbird US Golden Eagle CP Mountain Bluebird CS Marsh Hawk CP Black-tailed Gnatcatcher H
Merlin UW Ruby-crowned Kinglet CP
American Kestrel CP Loggerhead Shrike CS
Sage Grouse UP Starling CP
Scaled Quail Not Listed Yellow-rumped Warbler CS American Coot CS Western Meadowlark CP Killdeer CP Red-winged Blackbird CP
Spotted Sandpiper CS Brewer's Blackbird CP
Mourning Dove CS Brown-headed Cowbird CS
Common Nighthawk CS Blue Grosbeak CS
White-throated Swift CS House Finch CP Yellow-bellied Sapsucker CP American Goldfinch CP
Western Kingbird CS Green-tailed Towhee CS
Ash-throated Flycatcher CS Rufous-sided Towhee CP
Say's Phoebe CS Lark Sparrow CS
Horned Lark CP Black-throated Sparrow CS Violet-green Swallow CS Sage Sparrow UC Barn Swallow CS Dark-eyed Junco CW Cliff Swallow CS Chipping Sparrow CS
Scrub Jay CP Brewer's Sparrow CS
Black-billed Magpie CP White-crowned Sparrow CS
Common Raven CP Song Sparrow CP
Common Crow CW Vesper Sparrow CS aW. H. Behle and M. L. Perry, Utah Birds, Utah Museum of Natural History, University of Utah, Salt Lake City, 1975.

Relative Abundance Status
C = Common P = Permanent
U = Uncommon S = Summer Resident
H = Hypothetical W = Winter Visitant
Source: Dames & Moore (1978b), Table 2.8-5

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Raptors are prominent in the western United States. Five species were observed in the vicinity of the site (Table 1.7-3). Although no nests of these species were located, all (except the golden eagle, Aquila
chrysaetos) have suitable nesting habitat in the vicinity of the site. The nest of a prairie falcon (Falco
mexicanus) was found about 3/4 mile (1.2 km) east of the site. Although no sightings were made of this species, members tend to return to the same nests for several years if undisturbed (Dames & Moore, 1978b,
Section 2.8.2.2).
Of several mammals that occupy the site, mule deer (Odocoileus hemionus) is the largest species. The deer inhabit the project vicinity and adjacent canyons during winter to feed on the sagebrush and have been observed migrating through the site to Murphy Point (Dames & Moore, 1978b, Section 2.8.2.2). Winter deer use of the project vicinity, as measured by browse utilization, is among the heaviest in southeastern Utah [25 days of use per acre (61 days of use per hectare) in the pinyon-juniper-sagebrush habitats in the vicinity of the Mill site]. In addition, this area is heavily used as a migration route by deer traveling to Murphy Point to winter. Daily movement during winter periods by deer inhabiting the area has also been observed between Westwater Creek and Murphy Point. The present size of the local deer herd is not known.
Other mammals present at the site include the coyote (Canis latrans), red fox (Vulpes vulpes), gray fox (Urocyon cineroargenteus), striped skunk (Mephitis mephitis), badger (taxidea taxus), longtail weasel
(Mustela frenata), and bobcat (Lynx rufus). Nine species of rodents were trapped or observed on the site, the deer mouse (Peromyscus maniculatus) having the greatest distribution and abundance. Although desert cottontails (Sylvilagus auduboni) were uncommon in 1977, black-tailed jackrabbits (Lepus californicus) were seen during all seasons.
In the 2002 EA, NRC staff noted that, in the vicinity of the site, the U.S. Fish and Wildlife Service had provided the list set out in Table 3.12-1 of the 2002 EA, of the endangered, threatened, and candidate species that may occur in the area around the site.
Table 1.7-4 Endangered, Threatened and Candidate Species in the Mill Area
Common Name Scientific Name Status Navajo Sedge Carex specuicola Threatened
Bonytail Chub Gila elegans Endangered
Colorado Pikeminnow Ptychocheilus Lucius Endangered
Humpback Chub Gila cypha Endangered
Razorback Sucker Xyrauchen texanus Endangered
Bald Eagle Haliaeetus leucocephalus Threatened
California Condor Gymnogyps californianus Endangered
Gunnison Sage Grouse Centrocercus minimus Candidate
Mexican Spotted Owl Strix occidentalis lucida Threatened
Southwestern Willow Flycatcher Empidonax traillii extimus Endangered
Western Yellow-billed Cuckoo Coccyzus americanus occidentalis Candidate
Black-footed Ferret Mustela nigripes Endangered
Source: 2002 EA (NRC, 2002)

The 2002 EA also noted that, in addition, the species listed on Table 3.12-2 of the 2002 EA may occur within the Mill area that are managed under Conservation Agreements/Strategies.
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Table 1.7-5 Species Managed Under Conservation Agreements/Strategies at the Mill Area
Common Name Scientific Name
Colorado River Cutthroat Trout Oncorhynchus clarki pleuriticus
Gunnison Sage Grouse Centrocercus minimus
Source: 2002 EA (NRC, 2002)

For the 2002 EA, NRC staff contacted wildlife biologists from the BLM and the Utah Wildlife Service to gather local information on the occurrences of these additional species surrounding the Mill. NRC staff made the following conclusions (2002 EA p. 4):
While the ranges of the bald eagle, peregrine falcon, and willow flycatcher encompass the project area, their likelihood of utilizing the site is extremely low. The black-footed ferret has not been seen in Utah since 1952, and is not expected to occur any longer in the area. The California Condor has only rarely been spotted in the area of Moab, Utah, (70 miles
north) and around Lake Powell (approximately 50 miles south). The Mexican Spotted Owl is only found in the mountains in Utah, and is not expected to be on the Mesa. The
Southwestern Willow Flycatcher, Western Yellow-billed Cuckoo, and Gunnison Sage Grouse are also not expected to be found in the immediate area around the Mill site.
1.7.2 Aquatic Biota (1978 ER Section 2.9.2)
Aquatic habitat at the Mill site ranges temporally from extremely limited to nonexistent due to the aridity, topography and soil characteristics of the region and consequent dearth of perennial surface water. Two small stock watering ponds, are located on the Mill site a few hundred yards from the ore pad area (see Figure 1.5-3). One additional small “wildlife pond”, east of Cell 4A, was completed in 1994 to serve as a diversionary feature for migrating waterfowl (see Figure 1.5-3). Although more properly considered features of the terrestrial environment, they essentially represent the total aquatic habitat on the Mill site.
These ponds probably harbor algae, insects, other invertebrate forms, and amphibians.
They also provide a water source for small mammals and birds. Similar ephemeral catch and seepage basins are typical and numerous to the northeast of the Mill site and south of Blanding.
Aquatic habitat in the project vicinity is similarly limited. The three adjacent streams (Corral Creek, Westwater Creek, and an unnamed arm of Cottonwood Wash) are only intermittently active, carrying water primarily in the spring during increased rainfall and snowmelt runoff, in the autumn, and briefly during localized but intense electrical storms. Intermittent water flow most typically occurs in April, August, and October in those streams. Again, due to the temporary nature of these steams, their contribution to the aquatic habitat of the region is probably limited to providing a water source for wildlife and a temporary
habitat for insect and amphibian species.
In the 2002 EA, NRC staff concluded that (p. 4) no populations of fish are present on the project site, nor are any known to exist in the immediate area of the site. Four species of fish designated as endangered or threatened (the Bonytail Chub, Colorado Pikeminnow, Humpback Chub and Razorback Sucker) occur in the San Juan River 18 miles south of the site, which Dames & Moore noted in the 1978 ER (Section 2.8.2) is the closest habitat suitable for these species. NRC staff further concluded that there are no discharges of
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Mill effluents to surface waters, and therefore, no impacts are expected for the San Juan River due to operations of the Mill.
1.7.3 Background Radiation (2007 ER, Section 3.13.1)
All living things are continuously exposed to ionizing radiation from a variety of sources including cosmic and cosmogenic radiation from space and external radiation from terrestrial radionuclides such as uranium,
thorium and potassium-40 that occur in the earth’s crust, in building materials, in the air we breathe, the food we eat, the water we drink and in our bodies.
Some exposures, such as that from potassium-40, are controlled by our body’s metabolism and are relatively constant throughout the world, but exposures from sources such as uranium and thorium in soils and especially from radon in homes can vary greatly, by more than a factor of ten, depending on location.
In order to provide a context for exposures potentially attributable to radioactive emissions from processing ores and alternate feed materials at the Mill, this section provides some general background information on
exposures to natural background radiation worldwide, in the United States and in the Colorado Plateau region where the Mill is located.
1.7.3.1 The World
In general terms, the worldwide breakdown of natural background radiation sources can be summarized as follows (UNSCEAR, 2000):
Cosmic and Cosmogenic 39 mrem/yr Terrestrial 48 mrem/yr
Inhaled (Radon) 126 mrem/yr Ingested 29 mrem /yr Total (Average) 242 mrem/yr (116 mrem/yr excluding radon)
According to the United Nations Scientific Committee on the Effects of Atomic Radiation (“UNSCEAR”), the actual doses can vary considerably from the nominal values listed above, and around the world vary from this value by more than a factor of 10. For example, the dose from cosmic and cosmogenic radiation
varies with altitude. The higher the altitude, the less is the protection offered by the earth’s atmosphere. The dose from external gamma radiation can vary greatly depending on the levels of uranium and thorium
series radionuclides in the local soil. One example is the elevated gamma fields seen on natural sands containing heavy minerals as for example in regions around the Indian Ocean, in Brazil, and New Jersey. The high variability in indoor radon concentrations is a major source of the variation in natural background dose. The variability in the dose from radon arises from many factors, including: variability in soil radium concentrations from place to place; variation both over time and location in housing stock, heating and ventilating systems; and variations in individual habits. The worldwide average ambient (i.e. outdoor) radon concentration is about 10 Bq/m3 (UNSCEAR, 2000) and the world average concentration of U-238 and Th-232 in soils is about 0.7 pCi/g (25 Bq/kg) (NRC, 1994).
The definition of “background radiation” in 10 CFR 20.1003 specifically includes global fallout as it exists
in the environment from the testing of nuclear explosive devices or from past nuclear accidents such as Chernobyl that contribute to background radiation and are not under the control of the licensee. The
calculation of background radiation in Section 3.13.1 of the 2007 ER is conservative because it does not include such fallout in background radiation for the Mill site.
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1.7.3.2 United States
In the United States, nominal average levels of natural background radiation are as follows (National Council of Radiation Protection and Measurements (“NCRP”), 1987):
Cosmic and Cosmogenic 28 mrem/yr Terrestrial 28 mrem/yr Inhaled (Radon) 200 mrem/yr Ingested 40 mrem /yr Total (Average) 296 mrem/yr (96 mrem/yr excluding radon)
As shown above, in the United States, the average annual dose from natural background radiation is about
296 mrem/yr (including radon). The actual annual dose from natural background varies by region within the United States. For example, the average dose from external terrestrial radiation for a person living on the Colorado Plateau is in the order of 63 mrem/yr, which is considerably higher than the average dose from terrestrial radiation for a person living in Florida, where the average annual dose from external terrestrial radiation is only about 16 mrem/yr. (NRC, 1994; NCRP, 1987). In the United States, outdoor radon levels vary widely from about 0.1 pCi/l in New York City to about 1.2 pCi/L in Colorado Springs (NCRP, 1987), generally consistent with nominal worldwide values noted in the previous section.
1.7.4 Mill Site Background (1978 ER Section 2.10)
Radiation exposure in the natural environment is due to cosmic and terrestrial radiation and to the inhalation
of radon and its daughters. Measurements of the background environmental radioactivity were made at the Mill site using thermoluminescent dosimeters (“TLDs”). The results indicate an average total body dose of 142 millirems per year, of which 68 millirems is attributable to cosmic radiation and 74 millirems to terrestrial sources. The cosmogenic radiation dose is estimated to be about 1 millirem per year. Terrestrial radiation originates from the radionuclides potassium-40, rubidium-87, and daughter isotopes from the decay of uranium-238, thorium-232, and, to a lesser extent, uranium-235. The dose from ingested radionuclides is estimated at 18 millirems per year to the total body. The dose to the total body from all sources of environmental radioactivity is estimated to be about 161 millirems per year.
The concentration of radon in the area is estimated to be in the range of 500 to 1,000 pCi/m3, based on the
concentration of radium-226 in the local soil. Exposure to this concentration on a continuous basis would result in a dose of up to 625 millirems per year to the bronchial epithelium. As ventilation decreases, the
dose increases; for example, in unventilated enclosures, the comparable dose might reach 1,200 millirems per year.
The medical total body dose for Utah is about 75 millirems per year per person. The total dose in the area of the mill from natural background and medical exposure is estimated to be 236 millirems per year.
1.7.5 Current Monitoring Data
The most recent data for gamma, vegetation, air and stack sampling, groundwater, surface water, meteorological monitoring, and soil sampling discussed in the following sections are found in the Semi-
Annual Effluent Report for July through December 2015. See Section 2.3.2.1 for a more detailed discussion of the environmental monitoring programs at the Mill.
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1.7.5.1 Environmental Radon
Environmental radon concentrations are determined by using Track Etch detectors. There is one detector at each of eight environmental monitoring stations with a duplicate at BHV-2. See the Semi-Annual Effluent reports, for maps showing these locations.
1.7.5.2 Environmental Gamma
Gamma radiation levels are determined by optically stimulated luminescence dosimeters (“OSLs”). The OSLs are placed at the eight environmental stations located around the perimeter boundary of the Mill site discussed above. The badges are exchanged quarterly. Recent data are presented in the Semi-Annual Effluent Report for July through December 2015.
1.7.5.3 Vegetation Samples
Vegetation samples are collected at three locations around the Mill periphery. The sampling locations are northeast, northwest, and southwest of the Mill facility. Vegetation samples are collected three times per year. Recent vegetation results are included in the Semi-Annual Effluent Report for July through December 2015. No trends are apparent, as concentrations at each sampling location have remained consistent.
1.7.5.4 Environmental Air Monitoring and Stack Sampling
Air monitoring at the Mill is conducted at seven high volume (40 standard cubic feet per minute) stations located around the periphery of the Mill. These locations are shown on Figure 2.3-2. BHV-1 and BHV-8 are located at the northern Mill boundary. BHV-2 is further north at the nearest residence. BHV-4 is south of Cell 3, BHV-5 is just south of the ore storage pad on the eastern boundary of the Mill property, BHV-6 is located on a vector between the Mill site and the White Mesa Ute Community, and BHV-7 is located on the eastern boundary of the Mill north of BHV-5. The Semi-Annual Effluent Reports contain air monitoring
data. The results of the quarterly stack samples are also presented in the Semi-Annual Effluent Reports.
Pursuant to NRC License Amendment No. 41 for the Mill’s Source Material License No. SUA-1358, air
particulate radionuclide monitoring at BHV-3 was discontinued at the end of the third quarter of 1995. Tables in the Semi-Annual Effluent Reports show the radionuclide concentrations at each location. No trends are evident.
1.7.5.5 Surface Water
The results of surface water monitoring are presented in the Semi-Annual Effluent Reports. Cottonwood
Creek is sampled semi-annually and Westwater Creek is sampled on an annual basis. No trends are apparent.
1.7.5.6 Meteorological Monitoring
The Semi-Annual Air Quality and Meteorology Monitoring Report for July 1, 2015 through December 31, 2015 was provided by McVehil-Monnett and is available at the Mill.

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2 EXISTING FACILITY

The following sections describe the construction history of the Mill; the Mill and Mill tailings management facilities; Mill operations including the Mill circuit and tailings management; and both operational and environmental monitoring.
2.1 Facility Construction History
The Mill is a uranium/vanadium mill that was developed in the late 1970s by Energy Fuels Nuclear, Inc. (“EFN”) as an outlet for the many small mines that are located in the Colorado Plateau and for the possibility
of milling Arizona Strip ores. At the time of its construction, it was anticipated that high uranium prices would stimulate ore production. However, prices started to decline about the same time as Mill operations commenced.
As uranium prices fell, producers in the region were affected and mine output declined. After about two and one-half years, the Mill ceased ore processing operations altogether, began solution recycle, and entered a total shutdown phase. In 1984, a majority ownership interest was acquired by Union Carbide Corporation's (“UCC”) Metals Division which later became Umetco Minerals Corporation (“Umetco”), a wholly-owned subsidiary of UCC. This partnership continued until May 26, 1994 when EFN reassumed complete ownership. In May 1997, Denison (then named International Uranium (USA) Corporation) and
its affiliates purchased the assets of EFN. EFRI purchased Denison in July 2012 and is the current owner of the facility.
2.1.1 Mill and Mill Tailings System
The Source Materials License Application for the Mill was submitted to the NRC on February 8, 1978. Between that date and the date the first ore was fed to the Mill grizzly on May 6, 1980, several actions were taken including: increasing Mill design capacity, permit issuance from the United States Environmental Protection Agency (“EPA”) and the State of Utah, archeological clearance for the Mill and tailings system, and an NRC pre-operational inspection on May 5, 1980.
Construction on the Mill tailings system began on August 1, 1978 with the movement of earth from the area of Cell 2. Cell 2 was completed on May 4, 1980, Cell 1 on June 29, 1981, and Cell 3 on September 2, 1982. In January 1990 an additional cell, designated Cell 4A, was completed and initially used solely for
solution storage and evaporation. Cell 4A was only used for a short time and then taken out of service because of concerns about the synthetic lining system. In 2007, Cell 4A was retrofitted with a new State
of Utah approved lining system and was authorized to begin accepting process solutions in September 2008. Cell 4A was put back into service in October 2008. Cell 4B was constructed in 2010 and authorized to begin accepting process solutions in February 2011.
2.2 Facility Operations
In the following subsections, an overview of Mill operations and operating periods are followed by descriptions of the operations of the Mill circuit and tailings management facilities.
2.2.1 Operating Periods
The Mill was operated by EFN from the initial start-up date of May 6, 1980 until the cessation of operations
in 1983. Umetco, as per agreement between the parties, became the operator of record on January 1, 1984.
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The Mill was shut down during all of 1984. The Mill operated at least part of each year from 1985 through 1990. Mill operations again ceased during the years of 1991 through 1994. EFN reacquired sole ownership on May 26, 1994, and the Mill operated again during 1995 and 1996. After acquisition of the Mill by
Denison and its affiliates several local mines were restarted and the Mill processed conventional ore during 1999 and early 2000. With the resurgence in uranium and vanadium prices in 2003, Denison reopened
several area mines and again began processing uranium and vanadium ores in April 2008. Mill operations were suspended in May 2009, and resumed in March 2010. Conventional ore processing was again suspended in July 2011, resumed in November 2011 through March 2012, and suspended in April 2012. Denison became EFRI after July 25, 2012. Conventional ore processing resumed from August 2012 through June 2013, was suspended in July 2013, resumed May 2014 through August 2014, and was suspended again in September 2014. Typical employment figures for the Mill are approximately 110 during uranium-only operations and 150 during uranium/vanadium operations.
Commencing in the early 1990s through today, the Mill has processed alternate feed materials from time to time when the Mill has not been processing conventional ores. Alternate feed materials are uranium-
bearing materials other than conventionally mined uranium ores. The Mill installed an alternate feed circuit in 2009 that allows the Mill to process certain alternate feed materials simultaneously with conventional
ores.
2.2.2 Mill Circuit
While originally designed for a capacity of 1,500 dry tons per day (dtpd), the Mill capacity was boosted to the present rated design of 1,980 dtpd prior to commissioning.
The Mill uses an atmospheric hot acid leach followed by counter current decantation (CCD). This in turn is followed by a clarification stage which precedes the solvent extraction (SX) circuit. Kerosene containing iso-decanol and tertiary amines extracts the uranium and vanadium from the aqueous solution in the SX
circuit. Salt and soda ash are then used to strip the uranium and vanadium from the organic phase.
After extraction of the uranium values from the aqueous solution in SX, uranium is precipitated with
anhydrous ammonia, dissolved, and re-precipitated to improve product quality. The resulting precipitate is then washed and dewatered using centrifuges to produce a final product called "yellowcake." The yellowcake is dried in a multiple hearth dryer and packaged in drums weighing approximately 800 to 1,000 lbs. for shipping to converters.
After the uranium values are stripped from the pregnant solution in SX, the vanadium values are transferred to tertiary amines contained in kerosene and concentrated into an intermediate product called vanadium product liquor (VPL). An intermediate product, ammonium metavanadate (AMV), is precipitated from the VPL using ammonium sulfate in batch precipitators. The AMV is then filtered on a belt filter and, if necessary, dried. Normally, the AMV cake is fed to fusion furnaces where it is converted to the Mill's
primary vanadium product, V2O5 tech flake, commonly called "black flake."
The same basic process steps used for the recovery of uranium from conventional ores are used for the
recovery of uranium from alternate feed materials, with some variations depending on the particular alternate feed material.
The Mill processed 1,511,544 tons of conventional ore and other materials from May 6, 1980 to February 4, 1983. During the second operational period from October 1, 1985 through December 7, 1987, 1,023,393 tons of conventional ore were processed. During the third operational period from July 1988 through
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November 1990, 1,015,032 tons of conventional ore were processed. During the fourth operational period from August 1995 through January 1996, 203,317 tons of conventional ore were processed. In the fifth operational period, from May 1996 through September 1996, the Mill processed 3,868 tons of calcium
fluoride alternate feed material. From 1997 to early 1999, the Mill processed 58,403 tons from several additional alternate feed stocks.
With rising uranium prices in the late 1990s, company mines were reopened in 1997, and 87,250 tons of conventional ore were processed in 1999 and early 2000. In 2002 and 2003, the Mill processed 266,690 tons of alternate feed material from government cleanup projects. An additional 40,866 tons of alternate feed materials were processed in 2007. An additional 1,401 tons of alternate feed materials were processed from 2008 through July 2011. From April 2008 through July 2011 the Mill processed an additional 722,843 tons of conventional ore. The Mill processed 340,058 and 24,036 tons of conventional ore and alternate feed materials, respectively, between August 2011 and March 2016.
Inception to date material processed through March 2016 totals 5,298,701 tons. This total is for all processing periods and feeds combined.
2.2.3 Tailings Management Facilities
Tailings produced by the Mill from conventional ores typically contain 30 percent moisture by weight, have an in-place dry density of 86.3 pounds per cubic foot (calculated from Cell 2 volume and tons placed), have a size distribution with a significant -200 to -325 mesh size fraction, and have a high acid and flocculent content. Tailings from alternate feed materials that are similar physically to conventional ores, which comprise most of the tons of alternate feed materials processed to date at the Mill, are similar to the tailings for conventional ores. Tailings from some of the higher grade, lower volume alternate feed materials may vary somewhat from the tailings from conventional ores, primarily in moisture and density content.
The tailings facilities at the Mill currently consist of five cells as follows:
 Cell 1, constructed with a 30 mil PVC earthen-covered liner, is used for the evaporation of process
solutions (Cell 1 was previously referred to as Cell 1-I).
 Cell 2, constructed with a 30 mil PVC earthen-covered liner, is used for the storage of barren
tailings sands. This Cell is full and has been partially reclaimed.
 Cell 3, constructed with a 30 mil PVC earthen-covered liner, is used for the storage of barren
tailings sands and process solutions, but currently only receives mill waste and byproduct material in accordance with License provisions. This cell is partially filled and has been partially reclaimed.
 Cell 4A, constructed with a geosynthetic clay liner, a 60 mil HDPE liner, a 300 mil HDPE geonet drainage layer, a second 60 mil HDPE liner, and a slimes drain network over the entire cell bottom. This cell was placed into service in October 2008 and is used for storage of barren tailings sands and evaporation of process solutions.
 Cell 4B, constructed with a geosynthetic clay liner, a 60 mil HDPE liner, a 300 mil HDPE geonet drainage layer, a second 60 mil HDPE liner, and a slimes drain network over the entire cell bottom. This cell was placed into service in February 2011, is used for evaporation of process solutions, and has not been used for tailings storage.
Total estimated design capacity of Cells 2, 3, 4A, and 4B is approximately eight million tons. Figures 1.5-4 and 1.5-5 show the locations of the tailings management system cells.
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2.2.3.1 Tailings Management
Constructed in shallow valleys or swale areas, the lined tailings facilities provide storage below the existing grade and reduce potential exposure. Because the cells are separate and distinct, individual tailings cells may be reclaimed as they are filled to capacity. This phased reclamation approach minimizes the amount of tailings exposed at any given time and reduces potential exposure to a minimum.
Slurry disposal has taken place in Cells 2, 3 and 4A. Tailings placement in Cell 2 and Cell 3 was accomplished by means of the final grade method, described below.
The final grade method used in Cell 2 and Cell 3 calls for the slurry to be discharged until the tailings
surface comes up to near final grade. The discharge points are set up in the east end of the cell, and the final grade surface is advanced to the slimes pool area. Coarse tailings sand from the discharge points is
graded into low areas to reach the final disposal elevation. When the slimes pool is reached, the discharge points are then moved to the west end of the cell and worked back to the middle. An advantage to using the final grade method is that maximum beach stability is achieved by (1) allowing water to drain from the sands to the maximum extent, and (2) allowing coarse sand deposition to help provide stable beaches. Another advantage is that radon release and dust prevention measures (through the placement of the initial layer of the final cover) are applied as expeditiously as possible.
Slurry disposal in Cell 4A is from several pre-determined discharge points located around the north and east sides of the cell. Slurry discharge is only allowed on skid pads, or protective HDPE sheets, to prevent damage to the synthetic lining system. Once tailings solids have reach the maximum elevation around the
perimeter of the cell, discharge points can be moved toward the interior of the cell. Slurry disposal in Cell 4B will be conducted in the same manner as Cell 4A. Cell 4B is currently only accepting process solutions.
2.2.3.2 Liquid Management
As a zero-discharge facility, the Mill must evaporate all of the liquids utilized during processing. This evaporation currently takes place in four areas:
 Cell 1, which is used for solutions only
 Cell 3, in which tailings and solutions exist
 Cell 4A, in which tailings and solutions exist
 Cell 4B, presently used for solutions only
The original engineering design indicated a net water gain into the cells would occur during Mill operations. As anticipated, this has been proven to be the case. In addition to natural evaporation, spray systems have
been used at various times to enhance evaporative rates and for dust control. To minimize the net water gain, solutions are recycled back for use in the Mill circuit from the active tailings cells to the maximum extent possible. Solutions from Cells 1, 3, 4A, and 4B are brought back to the CCD circuit where metallurgical benefit can be realized. Recycle to other parts of the Mill circuit are not feasible due to the acidic condition of the solution.
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2.3 Monitoring Programs
2.3.1 Monitoring and Reporting Under the Mill’s GWDP
2.3.1.1 Groundwater Monitoring
a) Plugged and Excluded Wells
Wells MW-6, MW-7, and MW-8 were plugged because they were in the area of Cell 3, as was MW-13, in the Cell 4A area. Wells MW-9 and MW-10 are dry and have been excluded from the monitoring program. MW-16 is dry and has been plugged as part of the tailings Cell 4B construction.
b) Groundwater Monitoring at the Mill Prior to Issuance of the GWDP
At the time of renewal of the License by NRC in March 1997 and up until issuance of the GWDP in March
2005, the Mill implemented a groundwater detection monitoring program to ensure compliance to 10 CFR Part 40, Appendix A, in accordance with the provisions of the License. The detection monitoring program was in accordance with the report entitled, Points of Compliance, White Mesa Uranium Mill, prepared by Titan Environmental Corporation, submitted by letter to the NRC dated October 5, 1994 (Titan, 1994b). Under that program, the Mill sampled monitoring wells MW-5, MW-11, MW-12, MW-14, MW-15 and MW-17, on a quarterly basis. Samples were analyzed for chloride, potassium, nickel and uranium, and the results of such sampling were included in the Mill’s Semi-Annual Effluent Monitoring Reports that were filed with the NRC up until August 2004 and with the DWMRC subsequent thereto.
Between 1979 and 1997, the Mill monitored up to 20 constituents in up to 13 wells. That program was
changed to the Points of Compliance Program in 1997 because NRC had concluded that:
 The Mill and tailings system had produced no impacts to the perched zone or deep aquifer
 The most dependable indicators of water quality and potential cell failure were considered to be
chloride, nickel, potassium and natural uranium
c) Issuance of the GWDP
On March 8, 2005, the DWMRC issued the GWDP, which includes a groundwater monitoring program that supersedes and replaces the groundwater monitoring requirements set out in the License. Groundwater monitoring under the GWDP commenced in March 2005, the results of which are included in the Mill’s
Quarterly Groundwater Monitoring Reports that are submitted to the DWMRC.
d) Current Ground Water Monitoring Program at the Mill Under the GWDP
The current groundwater monitoring program at the Mill under the GWDP consists of monitoring at 25
point of compliance monitoring wells: MW-1, MW-2, MW-3, MW-3A, MW-5, MW-11, MW-12, MW-14, MW-15, MW-17, MW-18, MW-19, MW-23, MW-24, MW-25, MW-26, MW-27, MW-28, MW-29, MW-30, MW-31, MW-32 MW-35, MW-36, and MW-37. The locations of these wells are indicated on Figure 2.3-1.

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Insert
Figure 2.3-1 Site Plan Showing Locations of Perched Wells and Piezometers
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Part I.E.1.(c) of the GWDP requires that each point of compliance well must be sampled for the constituents listed in Table 2.3-1.
Table 2.3-1 Groundwater Monitoring Constituents Listed in Table 2 of the GWDP
Nutrients: Ammonia (as N) Nitrate & Nitrite (as N) Heavy Metals: Arsenic Beryllium Cadmium Chromium Cobalt Copper
Iron
Lead Manganese Mercury Molybdenum Nickel Selenium
Silver
Thallium Tin Uranium Vanadium Zinc

Radiologics: Gross Alpha Volatile Organic Compounds: Acetone Benzene 2-Butanone (MEK) Carbon Tetrachloride
Chloroform Chloromethane Dichloromethane Naphthalene
Tetrahydrofuran Toluene Xylenes (total)
Others: Field pH (S.U.) Fluoride Chloride Sulfate TDS

Further, Part I.E.1.(d) of the GWDP requires that, in addition to pH, the following field parameters must also be monitored:
 Depth to groundwater
 Temperature
 Specific conductance
 Redox potential
and that, in addition to chloride and sulfate, the following general organics must also be monitored:
 Carbonate, bicarbonate, sodium, potassium, magnesium, calcium, and total anions and cations
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Sample frequency depends on the speed of ground water flow in the vicinity of each well. Parts I.E.1(b)
and (c) of the GWDP provide that quarterly monitoring is required for all wells where local groundwater average linear velocity has been found by the DWMRC to be equal to or greater than 10 feet/year, and
semi-annual monitoring is required where the local groundwater average linear velocity has been found by the DWMRC to be less than 10 feet/year.
Based on these criteria, MW-11, MW-14, MW-25, MW-26, MW-30, MW-31, MW-35, MW-36 and MW-37 are monitored quarterly. Semi-annual monitoring is required at MW-1, MW-2, MW-3, MW-3A, MW-5, MW-12, MW-15, MW-17, MW-18, MW-19, MW-23, MW-24, MW-27, MW-28, MW-29 and MW-32.
In addition MW-20 and MW-22, which have been classified as general monitoring wells are sampled semi-annually.
2.3.1.2 Deep Aquifer
The culinary well (one of the supply wells) is completed in the Navajo aquifer, at a depth of approximately 1,800 feet below the ground surface. Due to the fact that the deep confined aquifer at the site is hydraulically isolated from the shallow perched aquifer (see the discussion in Sections 1.5.1.1 and 1.5.1.2) no monitoring of the deep aquifer is required under the GWDP.
2.3.1.3 Seeps and Springs
Pursuant to Part I.E.6 of the GWDP, EFRI has a Sampling Plan for Seeps and Springs in the Vicinity of the
White Mesa Uranium Mill, Revision: 0, March 17, 2009 (EFRI, 2009, the “SSSP”) (and as modified on June 10, 2011, Revision 1 – submitted to UDEQ for review) that requires the Mill to perform groundwater sampling and analysis of all seeps and springs found downgradient or lateral gradient from the tailings management cells.
Under the SSSP, seeps and springs sampling is conducted on an annual basis between May 1 and July 15
of each year, to the extent sufficient water is available for sampling, at five identified seeps and springs near the Mill. The sampling locations were selected to correspond with those seeps and springs sampled for the initial Mill site characterization performed in the 1978 ER, plus additional sites located by EFRI, the BLM and Ute Mountain Ute Indian Tribe representatives.
Samples are analyzed for all groundwater monitoring parameters found in Table 2.3-1 and the general inorganic constituents specified for groundwater monitoring in Part I.E.1 (d). The laboratory procedures used to complete the analyses are those utilized for groundwater sampling. In addition to these laboratory parameters, the pH, temperature, redox potential, and conductivity of each sample will be measured and recorded in the field. Laboratories selected by EFRI to perform analyses of seeps and springs samples will
be required to be certified by the State of Utah in accordance with UAC R317-6-6.12.A.
The seeps and springs sampling events are subject to the current Mill’s QAP, unless otherwise specifically modified by the SSSP to meet the specific needs of this type of sampling.

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2.3.1.4 Discharge Minimization Technology and Best Available Technology Standards and Monitoring
a) General
Part I.D. of the GWDP sets out a number of Discharge Minimization Technology (“DMT”) and Best Available Technology (“BAT”) standards that must be followed. Part I.E. of the GWDP sets out the Groundwater Compliance and Technology Performance Monitoring requirements, to ensure that the DMT and BAT standards are met. These provisions of the GWDP, along with the White Mesa Mill Discharge
Minimization Technology (DMT) Monitoring Plan, 4/15 Revision: 12.3 (the “DMT Plan”) (EFRI, 2015a), the White Mesa Mill Tailings Management System (EFRI, 2015b), the Cell 4A and 4B BAT Monitoring,
Operations and Maintenance Plan and other plans and programs developed pursuant to such Parts of the GWDP, set out the methods and procedures for inspections of the facility operations and for detecting failure of the system.
In addition to the programs discussed above, the following additional DMT and BAT performance standards and associated monitoring are required under Parts I.D and I.E. of the GWDP.
b) Tailings Cell Operation
Part I.D.2 of the GWDP provides that authorized operation and maximum disposal capacity in each of the existing tailings cells shall not exceed the levels authorized by the License and that under no circumstances shall the freeboard be less than three feet, as measured from the top of the flexible membrane liner (“FML”).
Part I.E.7(a) of the GWDP requires that the wastewater pool elevations in Cells 1 and 3 must be monitored weekly to ensure compliance with the maximum wastewater elevation criteria mandated by Condition 10.3 of the License. Parts I.E.8 (a)(4) and I.E.12.(a)(4) provide that authorized operation and maximum disposal capacity in Cells 4A and 4B shall not exceed the levels authorized GWDP ( as noted in the DMT Plan) and that under no circumstances shall the freeboard be less than three feet, as measured from the top of the FML. The requirements to meet freeboard elevation limits in Cell 3 and Cell 4A were eliminated upon approval to use Cell 4B. The solution elevation measurements in Cell 4A are not required for compliance with freeboard limits but are required for the calculation of the daily allowable volume of fluids pumped from Cell 4A LDS and are collected for this purpose.
Part I.D.2 further provides that any modifications by EFRI to any approved engineering design parameter at these existing tailings cells requires prior Directorapproval, modification of the GWDP and issuance of
a construction permit.
c) Slimes Drain Monitoring
Part I.D.3(b)(1) of the GWDP requires that EFRI must at all times maintain the average wastewater head in the slimes drain access pipe to be as low as reasonably achievable (ALARA) in each tailings disposal cell, in accordance with the approved DMT Plan. Compliance will be achieved when the average annual wastewater recovery elevation in the slimes drain access pipe, determined pursuant to the currently approved DMT Plan meets the conditions in Equation 1 specified in Part I.D.3(b)(1) of the GWDP.
Part I.E.7(b) of the GWDP requires that EFRI must monitor and record quarterly the depth to wastewater in the slimes drain access pipes as described in the currently approved DMT Plan at Cell 2, and upon
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commencement of de-watering activities, at Cell 3, in order to ensure compliance with Part I.D.3(b)(1) of
the GWDP.
d) Maximum Tailings Waste Solids Elevation
Part I.D.3(c) of the GWDP requires that upon closure of any tailings cell, EFRI must ensure that the maximum elevation of the tailings waste solids does not exceed the top of the FML.
e) Wastewater Elevation in Roberts Pond
Roberts Pond has been permanently removed from service. Excavation activities have been completed and pursuant to DWMRC correspondence dated March 5, 2015, routine monitoring is no longer necessary.
f) Inspection of Feedstock Storage Area
Part I.D.3(f) of the GWDP requires that open-air or bulk storage of all feedstock materials at the Mill facility
awaiting Mill processing must be limited to the eastern portion of the Mill site (the “ore pad”) described by the coordinates set out in that Part of the GWDP, and that storage of feedstock materials at the facility
outside of this defined area, must meet the requirements of Part I.D.11 of the GWDP. Part I.D.11 requires that EFRI must store and manage feedstock materials outside the defined ore storage pad in accordance with the following minimum performance requirements:
(i) Feedstock materials will be stored at all times in water-tight containers, and
(ii) Aisle ways will be provided at all times to allow visual inspection of each and every feedstock container, or
(iii) Each and every feedstock container will be placed inside a water-tight overpack prior to
storage, or
(iv) Feedstock containers shall be stored on a hardened surface to prevent spillage onto subsurface soils, and that conforms with the following minimum physical requirements:
A. A storage area composed of a hardened engineered surface of asphalt or concrete, and
B. A storage area designed, constructed, and operated in accordance with engineering plans and specifications approved in advance by the Director. All such engineering
plans or specifications submitted shall demonstrate compliance with Part I.D.4 of the GWDP, and
C. A storage area that provides containment berms to control stormwater run-on and run-off, and
D. Stormwater drainage works approved in advance by the Director, or
E. Other storage facilities and means approved in advance by the Director.
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Part I.E.7(d) of the GWDP requires that EFRI conduct weekly inspections of all feedstock storage areas to:
(i) Confirm that the bulk feedstock materials are maintained within the approved feedstock storage area specified by Part I.D.3(f) of the GWDP; and
(ii) Verify that all alternate feedstock materials located outside the approved feedstock storage area are stored in accordance with the requirements found in Part I.D.11 of the GWDP.
Part I.E.7(e) further provides that EFRI must conduct weekly inspections to verify that each feed material container complies with the requirements of Part I.D.11 of the GWDP.
The Mill’s procedures for weekly inspection of the ore pad is contained in Section 3.2 of the DMT Plan.
g) Monitor and Maintain Inventory of Chemicals
Part I.D.3(g) of the GWDP requires that for all chemical reagents stored at existing storage facilities and
held for use in the milling process, EFRI must provide secondary containment to capture and contain all volumes of reagent(s) that might be released at any individual storage area. Response to spills, cleanup
thereof, and required reporting must comply with the provisions of the Mill’s Emergency Response Plan, as stipulated by Part I.D.10 of the GWDP. Part I.D.3(g) further provides that for any new construction of reagent storage facilities, such secondary containment and control must prevent any contact of the spilled or otherwise released reagent or product with the ground surface.
Part I.E.9 of the GWDP requires that EFRI must monitor and maintain a current inventory of all chemicals used at the facility at rates equal to or greater than 100 kg/yr. This inventory must be maintained on-site, and must include:
(iii) Identification of chemicals used in the milling process and the on-site laboratory; and
(iv) Determination of volume and mass of each raw chemical currently held in storage at the
facility.
2.3.1.5 BAT Performance Standards for Cell 4A
a) BAT Operations and Maintenance Plan
Part I.D.6 and I.D.13 of the GWDP provides that EFRI must operate and maintain Cell 4A and Cell 4B respectively so as to prevent release of wastewater to groundwater and the environment in accordance with the Mill’s Cell 4A BAT Monitoring, Operations and Maintenance Plan. The Mill’s Cell 4A and 4B BAT
Monitoring, Operations and Maintenance Plan, 07/11 Revision: EFRI 2.3 includes the following performance standards:
(i) The fluid head in the leak detection system shall not exceed 1 foot above the lowest point in the lower membrane liner
(ii) The leak detection system maximum allowable daily leak rate shall not exceed 24,160 gallons/day for Cell 4A and 26,145 gallons/day for Cell 4B
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(iii) After EFRI initiates pumping conditions in the slimes drain layer in Cell 4A or Cell 4B,
EFRI will provide continuous declining fluid heads in the slimes drain layer, in a manner equivalent to the requirements found in Part I.D.3(b) for Cells 2 and 3
(iv) Under no circumstances shall the freeboard be less than 3-feet in Cell 4B, as measured from the top of the FML
b) Implementation of Monitoring Requirements Under the BAT Operations and Maintenance Plan
The Cell 4A and 4B BAT Monitoring, Operations and Maintenance Plan also requires EFRI to perform the following monitoring and recordkeeping requirements:
(i) Weekly Leak Detection System (LDS) Monitoring - including:
A. EFRI must provide continuous operation of the leak detection system pumping and
monitoring equipment, including, but not limited to, the submersible pump, pump controller, head monitoring, and flow meter equipment approved by the Director.
Failure of any pumping or monitoring equipment not repaired and made fully operational within 24-hours of discovery shall constitute failure of BAT and a violation of the GWDP.
B. EFRI must measure the fluid head above the lowest point on the secondary FML by the use of procedures and equipment approved by the Director. Under no circumstance shall fluid head in the leak detection system sump exceed a 1-foot level above the lowest point in the lower FML, not including the sump.
C. EFRI must measure the volume of all fluids pumped from the leak detection system. Under no circumstances shall the average daily leak detection system flow
volume exceed 24,160 gallons/day for Cell 4A or 26,145 for Cell 4B.
D. EFRI must operate and maintain wastewater levels to provide a 3-foot minimum of vertical freeboard in tailings Cell 4B. Such measurement must be made to the nearest 0.1 foot.
(ii) Slimes Drain Recovery Head Monitoring
Immediately after the Mill initiates pumping conditions in the Cell 4A or Cell 4B slimes drain system, quarterly recovery head tests and fluid level measurements will be made in accordance with the
requirements of Parts I.D.3(b) and I.E.7(b) of the GWDP and any plan approved by the Director.
2.3.1.6 Stormwater Management and Spill Control Requirements
Part I.D.10 of the GWDP requires that EFRI will manage all contact and non-contact stormwater and control contaminant spills at the facility in accordance with the Mill’s stormwater best management practices plan. The Mill’s Stormwater Best Management Practices Plan, Revision 1.5 (EFRI, 2016) includes the following
provisions:
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a) Protect groundwater quality or other waters of the state by design, construction, and/or active
operational measures that meet the requirements of the Ground Water Quality Protection Regulations found in UAC R317-6-6.3(G) and R317-6-6.4(C)
b) Prevent, control and contain spills of stored reagents or other chemicals at the Mill site
c) Cleanup spills of stored reagents or other chemicals at the Mill site immediately upon discovery
d) Report reagent spills or other releases at the Mill site to the Director in accordance with UAC 19-5-114
2.3.1.7 Tailings and Slimes Drain Sampling
Part I.E.10 of the GWDP requires that, on an annual basis, EFRI must collect wastewater quality samples from each wastewater source at each tailings cell at the facility, including surface impounded wastewaters, and slimes drain wastewaters, pursuant to the Mill’s Sampling and Analysis Plan for Tailings Cells, Leak
Detections Systems and Slimes Drains, Revision 2.1, July 2012 (the “Tailings Management System SAP”). All such sampling must be conducted in August of each year.
The purpose of the Tailings Management System SAP is to characterize the source term quality of all Mill tailings system wastewaters, including impounded wastewaters or process waters in the Mill tailings
system, and wastewater or leachates collected by internal slimes drains. The Tailings Management System SAP requires:
 Collection of samples of the liquid from the tailings management system cells and the slimes drain
of each cell that has commenced de-watering activities.
 Samples of liquid and slimes drain material will be analyzed at an offsite contract laboratory and
subjected to the analytical parameters included in Table 2 of the GWDP (see Table 2.3-1) and general inorganics listed in Part I.E.1(d)(2)(ii) of the GWDP, as well as semi-volatile organic compounds.
 A detailed description of all sampling methods and sample preservation techniques to be employed.
 The procedures used to analyze these samples will be standard analytical methods used for groundwater sampling as specified in the Mill’s QAP.
 The contracted laboratory will be certified by the State of Utah in accordance with UAC R317-6-6.12A.
 30-day advance notice of each annual sampling event must be given, to allow the DWMRC to collect split samples of all sources.
The tailings management and slimes drain sampling events are subject to the Mill’s QAP, unless otherwise specifically modified by the Tailings Management System SAP to meet the specific needs of this type of sampling.
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2.3.2 Monitoring and Inspections Required Under the License
2.3.2.1 Environmental Monitoring
The environmental monitoring program is designed to assess the effect of Mill process and disposal operations on the unrestricted environment. Delineation of specific equipment and procedures is presented in the most current version of the Mill’s Environmental Protection Manual.
c) Ambient Air Monitoring
(i) Ambient Particulate
Airborne radionuclide particulate sampling is performed at seven locations, termed BHV-1, BHV-2, BHV-4, BHV-5, BHV-6, BHV-7, and BHV-8. With the approval of the NRC and effective November 1995, BHV-3 was removed from the active air particulate monitoring program. At that time, the Mill proposed (and NRC determined) that a sufficient air monitoring database had been compiled at station BHV-3 to establish a representative airborne particulate radionuclide background for the Mill. BHV-6 was installed by the Mill at the request of the White Mesa Ute Community. This station began operation in July 1999 and provides airborne particulate information in the southerly direction between the Mill and the White Mesa Ute Community. Figure 2.3-2 shows the locations of these air particulate monitoring stations.
The present sampling system consists of high volume particulate samplers utilizing mass flow controllers to maintain an air flow rate of approximately 32 standard cubic feet per minute. Samplers are operated
continuously with a goal for on-stream operating period at ninety percent. Filter replacement is weekly with quarterly site composite for particulate radionuclide analysis. Analysis is done for U-natural, Th-230, Ra-226, Pb-210, and Th-232.
See the current Semi-Annual Effluent Monitoring Report for a summary of monitoring results for airborne particulate.
(ii) Ambient Radon
With the approval of the NRC, Radon-222 monitoring at the BHV stations was discontinued in 1995, due
to the unreliability of monitoring equipment available at that time to detect the new 10 CFR standard of 0.1 pCi/l. From that time until the present, the Mill demonstrated compliance with the requirements of R313-
15-301 by calculation authorized by the NRC in September 1995 and as contemplated by R313-15-302 (2) (a).
This calculation was performed by use of the MILDOS code for estimating environmental radiation doses for uranium recovery operations (Strenge and Bender 1981) in 1991 in support of the Mill’s 1997 license renewal and more recently in 2007 in support of the 2007 License Renewal Application, by use of the updated MILDOS AREA code (Yuan et al., 1998). The analysis under both the MILDOS and MILDOS AREA codes assumed the Mill to be processing high grade Arizona Strip ores at full capacity, and calculated the concentrations of radioactive dust and radon at individual receptor locations around the Mill. Specifically, the modeling under these codes assumed the following conditions:
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Insert
Figure 2.3-2 Particulate Monitoring Stations

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 730,000 tons of ore per year
 Average grade of 0.53 percent U3O8
 Yellowcake production of 4,380 tons of U3O8 per year (8.8 million pounds U3O8 per year).
Based on these conditions, the MILDOS and MILDOS AREA codes calculated the combined total effective dose equivalent from both air particulate and radon at the current nearest residence (approximately 1.2 miles north of the Mill), i.e., the individual member of the public likely to receive the highest dose from Mill
operations, as well as at all other receptor locations, to be below the ALARA goal of 10 mrem/yr for air particulate alone as set out in R313-15-101(4). Mill operations are constantly monitored to ensure that
operating conditions do not exceed the conditions assumed in the above calculations. If conditions are within those assumed above, radon has been calculated to be within regulatory limits. If conditions exceed those assumed above, then further evaluation will be performed in order to ensure that doses to the public continue to be within regulatory limits. Mill operations to date have never exceeded the License conditions assumed above.
In order to determine whether or not detection equipment has improved since 1995, EFRI voluntarily began ambient Radon-222 monitoring at the BHV stations in 2013. Radon-222 monitoring is completed using track etch detectors with an effective reporting limit of 0.06 pCi/L. The Radon-222 data collected from 2013 through present are presented in the Semi-Annual Effluent Monitoring Reports. Amendment 7 of
the Mill Radioactive Materials License expanded the Mill’s effluent monitoring programs in 2014. Amendment 7 included expanding the monitoring programs to require the collection of Radon-222 data at
all of the BHV stations.
d) External Radiation
Optically Stimulated Luminescence (“OSL”) badges, as supplied by Landauer, Inc., or equivalent, are utilized at all of the high volume air monitoring stations to determine ambient external gamma exposures (see Figure 2.3-2). System quality assurances are determined by placing a duplicate monitor at one site continuously. Exchanges of OSL badges are on a quarterly basis. Measurements obtained from location BHV-3 have been designated as background due to BHV-3’s remoteness from the Mill site (BHV-3 is
located approximately 3.5 miles west of the Mill site). For further procedural information see Section 4.3 of the most recent version of the Mill’s Environmental Protection Manual. See the current Semi-Annual
Effluent Monitoring Report for a summary monitoring results for external radiation.
e) Soil and Vegetation
(i) Soil Monitoring
As mentioned above, specific changes to the individual monitoring programs, including the soil sampling program, has been made as a result of Amendment 7 to the Radioactive Materials License.
Soil samples from the top 2 inches of surface soils are collected annually at each of the 52 locations (see Figure 2.3-3). and the soil samples are analyzed for U-natural, Ra-226, Pb-210, and Th-232. For further procedural information see Section 4.1 of the most current version of the Mill’s Environmental Protection
Manual. See Section 3.13.1.7.1 of the 2007 ER and the current Semi-Annual Effluent Monitoring Report
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for a summary of the historic results for soil monitoring. The 2007 ER concludes that the results of sampling
are low, less than the unrestricted release limits.
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Insert
Figure 2.3-3 Soil Monitoring Stations

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(ii) Vegetation Monitoring
Forage vegetation samples are collected three times per year from animal grazing locations to the northeast (near BHV-l (the meteorological station)), northwest (to the immediate west of the site) and southwest (by
BHV-4) of the Mill site. Samples are obtained during the grazing season, in the late fall, early spring, and in late spring. A minimum of three kilograms of vegetation are submitted from each site for analysis of U-natural, Ra-226, Pb-210, and Th-232. For further procedure information see Section 4.2 of the most current version of the Mill’s Environmental Protection Manual. See Section 3.13.7(d) of the 2007 ER and the current Semi-Annual Effluent Monitoring Report for a summary of the historic results for vegetation monitoring. The most recent results indicate no increase in uptake of U-natural, Ra-226 Th-232, and Pb-210 in vegetation.
d) Meteorological
Meteorological monitoring is performed at a site near BHV-1. The sensor and recording equipment are
capable of monitoring wind velocity and direction, from which the stability classification is calculated. Data integration duration is one-hour with hourly recording of mean speed, mean wind direction, and mean
wind stability (as degrees sigma theta).
The data from the meteorological station is retrieved monthly by down loading onto a Campbell Scientific data module, or the equivalent. The data module is sent to an independent meteorological contractor where the module is downloaded to a computer record, and the data is correlated and presented in a Semi-Annual Meteorological Report.
Monitoring for precipitation consists of a daily log of precipitation using a standard NOAA rain gauge, or the equivalent, installed near the administrative office, consistent with NOAA specifications.
Windrose data is summarized in a format compatible with MILDOS and UDAD specifications for 40 CFR 190 compliance. For further procedural information see Section 1.3 of the most current version of the
Mill’s Environmental Protection Manual. A windrose for the site is set out in Figure 1.1-1.
e) Point Emissions
Stack emission monitoring from yellowcake facilities follows EPA Method 5 procedures and occurs on the following schedule shown in Table 2.3-2.
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Table 2.3-2 Stack Sampling Requirements
Frequency Grizzly Baghouse Stack
North and/or
South Yellowcake Dryer Stacks
Yellowcake Packaging Baghouse Stack
Vanadium Dryer Stack Vanadium Packaging Stack
Quarterly If operating, U-nat, Th-230, Ra-226, Pb-210, Th-232, Ra-228, and Th-228.
If operating, U-nat, Th-230, Ra-226, Pb-210, Th-232, Ra-228, and Th-228.
If operating, U-nat, Th-230, Ra-226, Pb-210, Th-232, Ra-228, and Th-228.
If operating, U-nat, Th-230, Ra-226, Pb-210, Th-232, Ra-228, and Th-228.
If operating, U-nat, Th-230, Ra-226, Pb-210, Th-232, Ra-228, and Th-228.

Monitored data includes scrubber system operation levels, process feed levels, particulate emission
concentrations, isokinetic conditions, and radionuclide emission concentrations. For further procedure information see Section 1.4 of the most current version of the Mill’s Environmental Protection Manual.
Stack emission data are summarized in the Semi-Annual Effluent Monitoring Report.
f) Surface Water Monitoring
Surface water monitoring is conducted at two locations adjacent to the Mill facility known as Westwater Canyon and Cottonwood Creek. Grab samples are obtained annually from Westwater and quarterly from Cottonwood. For Westwater Creek, samples of sediments will be collected if a water sample is not available. Field monitored parameters and laboratory monitored parameters are listed in Table 2.3-3. For further procedural information see Section 2.1 of the most current version of the Mill’s Environmental
Protection Manual. See the current Semi-Annual Effluent Monitoring Report for a summary monitoring results for surface water.

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Table 2.3-3 Operational Phase Surface Water Monitoring Program
Monitoring Sites
Westwater Creek and Cottonwood Creek
Field Requirements
1. temperature C
2. Specific Conductivity umhos at 25 C
3. pH at 25 C
4. redox potential
5. sample date
6. sample ID Code
Vendor Laboratory Requirements
Semiannual* Quarterly

One gallon Unfiltered and Raw One gallon Unfiltered and Raw
One gallon Unfiltered, Raw and preserved to pH <2 with HNO3 One gallon Unfiltered, Raw and Preserved to pH <2 with HNO3 Total Dissolved Solids Total Dissolved Solids Total Suspended Solids Total Suspended Solids Gross Alpha Suspended Unat Dissolved Unat Suspended Ra-226 Dissolved Ra-226 Suspended Th-230 Dissolved Th-230 *Semiannual sample must be taken a minimum of four months apart. Annual Westwater Creek sample is
analyzed for semi-annual parameters. Radionuclides and LLDs reported in µCi/ml
2.3.2.2 Additional Monitoring and Inspections Required Under the License
Under the License daily, weekly, and monthly inspection reporting and monitoring are required by NRC Regulatory Guide 8.31, Information Relevant to Ensuring that Occupational Radiation Exposures at
Uranium Recovery Facilities will be As Low As is Reasonable Achievable, Revision 1, May 2002 (“Reg
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Guide 8.31”), by Section 2.3 of the Mill’s ALARA Program and by the DMT Plan, over and above the
inspections described above that are required under the GWDP. A copy of the Mill’s ALARA Program is included as Appendix I to the 2007 License Renewal Application.
a) Daily Inspections
Three types of daily inspections are performed at the Mill under the License:
(i) Radiation Staff Inspections
Paragraph 2.3.1 of Reg. Guide 8.31 provides that the Mill’s Radiation Safety Officer (“RSO”) or designated health physics technician should conduct a daily walk-through (visual) inspection of all work and storage areas of the Mill to ensure proper implementation of good radiation safety procedures, including good housekeeping that would minimize unnecessary contamination. These inspections are required by Section
2.3.1 of the Mill’s ALARA Program, and are documented and on file in the Mill’s Radiation Protection Office.
(ii) Operating Foreman Inspections
30 CFR Section 56.18002 of the Mine Safety and Health Administration regulations requires that a competent person designated by the operator must examine each working place at least once each shift for conditions which may adversely affect safety or health. These daily inspections are documented and on file in the Mill’s Radiation Protection Office.
(iii) Daily Tailings Inspection
Section 2 of the DMT Plan requires that during Mill operation, the Shift Foreman, or other person with the
training specified in Appendix B of the Tailings Management System, designated by the RSO, will perform an inspection of the tailings line and tailings area at least once per shift, paying close attention for potential
leaks and to the discharges from the pipelines. Observations by the Inspector are recorded on the appropriate line on the Mill’s Daily Inspection Data form.
b) Weekly Inspections
Three types of weekly inspections are performed at the Mill under the License:
(i) Weekly Inspection of the Mill Forms
Paragraph 2.3.1 of Reg. Guide 8.31 provides that the RSO and the Mill foreman should, and Section 2.3.2 of the Mill’s ALARA Program provides that the RSO and Mill foreman, or their respective designees, shall
conduct a weekly inspection of all Mill areas to observe general radiation control practices and review required changes in procedures and equipment. Particular attention is to be focused on areas where potential
exposures to personnel might exist and in areas of operation or locations where contamination is evident.
(ii) Weekly Ore Storage Pad Inspection Forms
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Section 3 of the DMT Plan requires that weekly feedstock storage area inspections will be performed by
the Radiation Safety Department, to confirm that the bulk feedstock materials are stored and maintained within the defined area of the ore pad and that all alternate feed materials located outside the defined ore
pad area are maintained within water tight containers. The results of these inspections are recorded on the Mill’s Ore Storage/Sample Plant Weekly Inspection Report.
(iii) Weekly Tailings and DMT Inspection
Section 3 of the DMT Plan require that weekly inspections of the tailings area and DMT requirements be performed by the radiation safety department.
c) Monthly Reports
Two types of monthly reports are prepared by Mill staff:
(i) Monthly Radiation Safety Reports
At least monthly, the RSO reviews the results of daily and weekly inspections, including a review of all
monitoring and exposure data for the month and provides to the Mill Manager a monthly report containing a written summary of the month’s significant worker protection activities (Section 2.3.4 of the Mill’s ALARA Program).
(ii) Monthly Tailings Inspection Reports
The Tailings Management System Plan requires that a Monthly Inspection Data form be completed for the monthly tailings inspection. This inspection is typically performed in the fourth week of each month and is in lieu of the weekly tailings inspection for that week.
Mill staff also prepares a monthly summary of all daily, weekly, monthly and quarterly tailings inspections.
d) Quarterly Tailings Inspections
The Tailings Management System Plan requires that the RSO or his designee perform a quarterly tailings inspection.
e) Annual Evaluations
The following annual evaluations are performed under the License, as set out in Section 6 of the Tailings Management System Plan.
(i) Annual Technical Evaluation
An annual technical evaluation of the tailings management system must be performed by a registered professional engineer (PE), who has experience and training in the area of geotechnical aspects of retention structures. The technical evaluation includes an on-site inspection of the tailings management system and a thorough review of all tailings records for the past year. The Technical Evaluation also includes a review and summary of the annual movement monitor survey (see paragraph (ii) below).
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All tailings management system components and corresponding dikes are inspected for signs of erosion,
subsidence, shrinkage, and seepage. The drainage ditches are inspected to evaluate surface water control structures.
In the event tailings capacity evaluations were performed for the receipt of alternate feed material during the year, the capacity evaluation forms and associated calculation sheets will be reviewed to ensure that the maximum tailings capacity estimate is accurate. The amount of tailings added to the system since the last evaluation will also be calculated to determine the estimated capacity at the time of the evaluation.
As discussed above, tailings inspection records consist of daily, weekly, monthly, and quarterly tailings inspections. These inspection records are evaluated to determine if any freeboard limits are being approached. Records will also be reviewed to summarize observations of potential concern. The evaluation also involves discussion with the Environmental and/or Radiation Technician and the RSO regarding activities around the tailings area for the past year. During the annual inspection, photographs of the tailings
area are taken. The training of individuals is also reviewed as a part of the Annual Technical Evaluation.
The registered engineer obtains copies of selected tailings inspections, along with the monthly and quarterly
summaries of observations of concern and the corrective actions taken. These copies are then included in the Annual Technical Evaluation Report.
The Annual Technical Evaluation Report must be submitted by November 15th of every year to the Director and to the Directing Dam Safety Engineer, State of Utah, Natural Resources.
(ii) Annual Movement Monitor Survey
A movement monitor survey is conducted by a licensed surveyor semi-annually for the first three years, and annually thereafter during the second quarter of each year. The movement monitor survey consists of
surveying monitors along dikes 4A-W, 4A-S and 4B-S to detect any possible settlement or movement of the dikes. The data generated from this survey is reviewed and incorporated into the Annual Technical
Evaluation Report of the tailings management system.
(iii) Annual Leak Detection Fluid Samples
In the event solution has been detected in a leak detection system in Cells 1, 2 or 3, a sample will be collected on an annual basis. This sample will be analyzed according to the conditions set forth in License Condition 11.3.C. The results of the analysis will be reviewed to determine the origin of the solution.

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3 TAILINGS RECLAMATION PLAN

This section provides an overview of the Mill location and property; details the facilities to be reclaimed; and describes the design criteria applied in this Plan. Drawings are presented as an attachment to this report.
Technical specifications are presented in Attachment A. Attachment B presents the quality assurance and quality control plan for construction activities. Attachment C presents cost estimates for reclamation (based
on the Existing Cover Design). Attachment D presents the most current Radiation Protection Manual for Reclamation Activities. Attachment E provides documents on the approved Existing Cover Design that
was presented in Reclamation Plan Revision 3.2b (Denison, 2011b).
The Reclamation Plan is written assuming the tailings management system Cells 2, 3, 4A, and 4B will receive tailings to the maximum permitted tailings elevations. Cell 4B is used for evaporation of process solutions and has not been used for tailings storage. The Plan has been written assuming Cell 4B will be used in the future for tailings storage.
If Cell 4B is not used in the future for tailings storage, Cell 4B can be reclaimed for clean closure. Any remaining solutions would be pumped to the last active tailings Cell. The liner system would be removed
and disposed in the last active tailings cell. The exterior embankments would then be regraded. This design is not presented in this report.
3.1 Location and Property Description
The Mill is located approximately six miles south of Blanding, Utah on US Highway 191 on a parcel of land encompassing all or part of Sections 21, 22, 27, 28, 29, 32, and 33 of T37S, R22E, and Sections 4, 5, 6, 8, 9, and 16 of T38S, R22E, Salt Lake Base and Meridian described as follows (Figure 3.1-1):
The south half of the south half of Section 21; the southeast quarter of the southeast quarter of Section 22; the northwest quarter of the northwest quarter and lots 1 and 4 of Section 27 all that part of the southwest quarter of the northwest quarter and the northwest quarter southwest quarter of Section 27 lying west of Utah State Highway 163; the northeast
quarter of the northwest quarter, the south half of the northwest quarter, the northeast quarter and the south half of Section 28; the southeast quarter of the southeast quarter of
Section 29; the east half of Section 32 and all of Section 33, Township 37 South, Range 22 East, Salt Lake Base and Meridian. Lots 1 through 4, inclusive, the south half of the north half, the southwest quarter, the west half of the southeast quarter, the west half of the east half of the southeast quarter and the west half of the east half of the east half of the southeast quarter of Section 4; Lots 1 through 4, inclusive, the south half of the north half and the south half of Section 5 (all); Lots 1 and 2, the south half of
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Insert
Figure 3.1-1 White Mesa Mill Regional Map Showing Land Position

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the northeast quarter and the south half of Section 6 (E1/2); the northeast quarter of Section 8; all of Section 9 and all of Section 16, Township 38 South, Range 22 East, Salt Lake Base
and Meridian. Additional land is controlled by 46 Mill site claims. Total land holdings are approximately 5,415 acres.
3.2 Facilities to be Reclaimed
See the Drawings for a general layout of the Mill yard and related facilities and the restricted area boundary.
3.2.1 Summary of Facilities to be Reclaimed
The facilities to be reclaimed include the following:
 Cell 1 (evaporation). Cell 1 was previously referred to as Cell 1-I.
 Cells 2, 3, and 4A (tailings).
 Cell 4B (This cell is currently used for evaporation. The reclamation design assumes this cell will be used for tailings in the future).
 Mill buildings and equipment.
 On-site contaminated areas.
 Off-site contaminated areas (i.e., potential areas affected by windblown tailings).
The reclamation of the above facilities will include the following:
 Placement of contaminated soils, crystals, and synthetic liner material and any contaminated underlying soils from Cell 1 into the last active tailings cell
 Placement of a compacted clay linerliner system on a portion of the Cell 1 impoundment area to be used for disposal of contaminated materials and debris from the Mill site, if needed
 Decommissioning Cell 1
 Placement of materials and debris from Mill decommissioning into the last active tailings cell or Cell 1 Disposal Area
 Placement of an engineered multi-layer cover over the entire area of Cells 2, 3, 4A, 4B, and the Cell 1 Disposal Area
 Construction of runoff control and diversion channels as necessary
 Reclamation of Mill and ancillary areas
 Reclamation of borrow sources
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3.2.2 Tailings and Evaporative Cells
The following subsections describe the cover design and reclamation procedures for Cells 1, 2, 3, 4A, and
4B. Complete engineering details and text are presented in the Updated Tailings Cover Design Report included as Appendix A to this Reclamation Plan.
Cell 2 final cover construction will take place before final cover construction on other cells at the White Mesa Mill. Cell 2 final cover construction will occur in two phases and includes a performance monitoring test section (Primary Test Section) containing a lysimeter constructed in the southeast portion of Cell 2 concurrently with the Phase 1 cover placement. A Supplemental Test Section will behas been constructed north of the tailings management cells relating to vegetative cover and erosion control. The plan for implementing final cover placement on Cell 2 and performance assessment and monitoring is presented in Appendix A. Cell 2 Phase 1 cover placement began in May 2016 and is expected to bewas completed in
two construction seasons2017. The Primary Test Section was constructed in the fall of 2016. The Supplemental Test Section is proposed to bewas constructed in the fall of 2017.
3.2.2.1 Soil Cover Design
A conceptual ET cover design was proposed by EFRI for the White Mesa Mill tailings management cells in the Infiltration and Contaminant Transport Modeling (ICTM) reports (MWH 2007 and 2010) submitted
to the DWMRC to fulfill the White Mesa Mill’s Ground Water Discharge Permit No. UGW370004.
EFRI stated their intent to submit an ET cover design as part of their license renewal in a meeting with DWMRC on October 5, 2010 after review of the DWMRC Reclamation Plan, Version 4.0 Interrogatories – Round 1 (DRC, 2010). The proposed conceptual ET cover design was provided to DWMRC on October 7, 2010 and was essentially the same as presented in the 2010 Infiltration and Contaminant Transport Model report (MWH, 2010). The ET cover proposed and evaluated as described in the Updated Tailings Cover Design Report (Appendix A) is designed as 9.5 feet thick for Cells 1, 4A, and 4B, 10 feet thick for Cell 3, and 10.5 feet thick for Cell 2. The difference in cover thickensses is based on radon emanation analyses. The cover system consists of the following materials outlined below by individual layers and thicknesses
from top to bottom:
 Layer 4 - 0.5 ft (15 cm) thick Erosion Protection Layer (gravel-admixture or topsoil)
 Layer 3 - 3.5 ft (107 cm) thick Growth Medium Layer acting as a Water Storage/Biointrusion/Frost Protection/Secondary Radon Attenuation Layer (loam to sandy clay)
 Layer 2 – 3.0 to 4.0 ft (91 to 122 cm) thick Compacted Cover acting as the Primary Radon
Attenuation Layer (highly compacted loam to sandy clay)
 Layer 1 - 2.5 ft (76 cm) thick (minimum) Interim Fill Layer acting as a Secondary Radon
Attenuation and Grading Layer (loam to sandy clay)
All the layers combined comprise the monolithic ET cover system. Layer 1 was placed in stages on Cell 2 and the majority of Cell 3 as interim cover. Layer 1 will be placed on the remaining area of Cell 3, all of the Cell 1 Disposal Area, and Cells 4A and 4B. It is assumed that this material was or will be dumped and minimally compacted by construction equipment to approximately 80 percent of standard Proctor density. Layer 1 will provide the platform for the remaining cover system and act as a secondary radon attenuation
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layer. Layer 2 will be compacted cover layer and act as the primary radon attenuation layer. It will be 3 - 4 feet thick (3 feet for Cells 1, 4A, and 4B, 3.5 feet for Cell 3, and 4 feet for Cell 2) and compacted to 95
percent of standard Proctor density. Layer 3 will be the growth medium layer. Layer 3 will also act as a secondary radon attenuation layer and a protection layer for the primary radon attenuation layer (Layer 2). Layer 3 will be 3.5 feet thick and placed at 85 percent of standard Proctor density to optimize water storage and rooting characteristics for plant growth. Layer 4 will be a 0.5-foot thick erosion protection layer. This layer will consist of topsoil in areas where the cover is sloped at 0.5 percent and topsoil-gravel admixture in areas where the cover is sloped at 1 percent. The topsoil-gravel admixture will consist of topsoil (75 percent) mixed with 1-inch minus gravel (25 percent).
The majority of the cover will be constructed from materials available from within the site boundaries. As a part of the soil cover, erosion protection will be placed as the top layer of the cover to stabilize slopes and
provide long-term erosion resistance (see Appendix A for characterization of cover materials). The erosion protection materials will be obtained from off-site sources.
The key state and federal performance criteria for tailings cover design and reclamation include:
 Attenuate radon flux to a rate of 20 pCi/m2-s, averaged over each entire cell
 Minimize infiltration into the reclaimed tailings cells
 Maintain a design life of up to 1,000 years and at least 200 years
 Provide long-term isolation of the tailings, including slope stability and geomorphic durability to
withstand erosional forces of wind and runoff (up to the probable maximum precipitation event) as well as design to accommodate seismic events (up to the peak ground acceleration from the
maximum credible earthquake)
 Designs to accommodate minimum reliance on active maintenance
Several models/analyses were utilized in simulating the soil cover effectiveness: radon flux attenuation, infiltration, freeze/thaw effects, erosion protection, static and pseudostatic slope stability analyses, biointrusion, tailings dewatering, liquefaction, and settlement. These analyses and results are discussed in detail in Sections 3.3.2 through 3.3.10, and calculations are also shown in the Updated Tailings Cover Design Report (Appendix A).
The final grading plans are presented in the Drawings. As indicated in the Drawings, the drainage on the top surface of the ET cover at Cells 1, 2, and 3 is designed at a 0.5 percent slope, with portions of Cell 2 top surface at a 1 percent slope and portions of Cells 4A and 4B top surfaces at 0.8 percent slope. The
external side slopes will be graded to five horizontal to one vertical (5H:1V).
3.2.2.2 Cell 1
Cell 1, used during Mill operations solely for evaporation of process liquids, is the northernmost existing
cell and is located immediately west of the Mill. It is also the highest cell in elevation, as the natural topography slopes to the south. The drainage area above and including the cell is 216 acres. This includes
drainage from the Mill site.
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Cell 1 will be evaporated to dryness. The synthetic liner and raffinate crystals will then be removed and placed in the tailings cells. Any contaminated soils below the liner will be removed and also placed in the
tailings cells. Based on current regulatory criteria, the current plan calls for excavation of the residual radioactive materials to be designed to ensure that the concentration of radium-226 in land averaged over any area of 100 square meters does not exceed the background level by more than:
 5 pCi/g, averaged over the first 15 cm of soil below the surface
 15 pCi/g, averaged over a 15 cm thick layer of soil more than 15 cm below the surface
A portion of Cell 1 (i.e., the Cell 1 Disposal Area), adjacent to and running parallel to the downstream cell dike, may be used for permanent disposal of contaminated materials and debris from the Mill site decommissioning and windblown cleanup. The actual area of the Cell 1 Disposal Area needed for storage of additional material will depend on the status of Cells 3, 4A, and 4B at the time of final Mill decommissioning. A portion of the Mill area decommissioning material may be placed in Cells 3, 4A or 4B if space is available, but for purposes of the reclamation design the entire quantity of contaminated materials from the Mill site decommissioning is assumed to be placed in the Cell 1 Disposal Area, which will subsequently be covered with the ET cover. This results in approximately 10 acres of the Cell 1 area
constituting the Cell 1 Disposal Area and being utilized for permanent tailings storage. The remaining area of Cell 1 will then be breached and converted to a sedimentation basin. All runoff from the covered Cell 1 Disposal Area, the Mill area and the area immediately north of Cell 1 will be routed into the sedimentation basin and will discharge onto the natural ground via the channel located at the southwest corner of the basin. The channel is designed to accommodate the PMF flood. Hydraulic and erosional analyses are provided in Appendix A. The channel will be a bedrock channel with a 0.1 percent channel slope, 150-foot bottom width, and 3 horizontal: 1 vertical sideslopes.
3.2.2.3 Cell 2
Cell 2 has been filled with tailings and will be covered with the ET cover to a minimum cover thickness of 10.5 feet. The final cover will drain at a slope of 0.5 to 1 percent to the north and south as shown in the Drawings.
The cover will be as described in Section 3.2.2.1 above and will consist of a 2.5 feet of interim fill, followed by 4 feet of compacted cover, overlain by 3.5 feet of growth medium. Half a foot of topsoil or gravel-admixture will be utilized as armor against erosion at the surface of the cover. External side slopes will be
graded to a 5:1 slope and will have 6 inches of angular riprap on the cover surface for erosion protection. A rock apron with dimensions as shown in the Drawings will be constructed at the transition areas of the
toes of the side slopes of Cell 2.
3.2.2.4 Cell 3
Cell 3 will be filled with tailings, debris and contaminated soils and covered with the same ET cover system
and erosion protection as Cell 2, except the total thickness will be 10 feet with a compacted cover layer of 3.5 feet.
3.2.2.5 Cells 4A and 4B
Cells 4A and 4B are designed to be filled with tailings, debris and contaminated soils and will be covered with the same ET cover system as Cell 2 and Cell 3, except the total thickness will be 9.5 feet with a
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compacted cover layer of 3 feet. The south external side slopes will be graded to 5H:1V and will have 8 inches of angular riprap on the cover surface for erosion protection. A rock apron with dimensions as
shown on the drawings will be constructed at the south side slopes of Cells 4A and 4B. The east and west external side slopes will be graded to 5H:1V and have the same erosion protection as the east and west sides slopes of Cells 2 and 3.
3.3 Design Criteria
As required by Part I.H.11 of the GWDP, EFRI has completed an infiltration and contaminant transport model of the final tailings cover system to demonstrate the long-term ability of the ET cover to protect nearby groundwater quality. The ET cover design and basis presented in Appendix A will be used for this version of the Plan.
The design criteria summaries in this section are adapted from the Updated Tailings Cover Design Report. A copy of the Tailings Cover Design Report is included as Appendix A. It contains all of the calculations
used in design and summarized in this section.
3.3.1 Regulatory Criteria
Information contained in 10 CFR Part 20, 10 CFR Part 40 and Appendix A to 10 CFR Part 40 (which are incorporated by reference into UAC R313-24-4), and 40 CFR Part 192 were used as criteria in final designs under this Plan. In addition, the following documents also provided guidance:
 Benson, C.H. W.H. Albright, D.O. Fratta, J.M. Tinjum, E. Kucukkirca, S.H. Lee, J. Scalia, P.D. Schlicht, and X. Wang, 2011. Engineered Covers for Waste Containment: Changes in Engineering Properties and Implications for Long-Term Performance Assessment (in four volumes). NUREG/CR-7028, Prepared for the U.S. Nuclear Regulatory Commission, Washington, D.C., December.
 Johnson, T.L., 2002. "Design of Erosion Protection for Long-Term Stabilization." U.S. Nuclear Regulatory Commission (NRC), NUREG-1623. September.
 Nelson, J.D. , S.R. Abt, R.L. Volpe, D. Van Zye, N.E. Hinkle, and W.P. Staub, 1986. Methodologies for Evaluating Long-Term Stabilization Designs of Uranium Mill Tailings
Impoundments, NUREG/CR-4620. June.
 U. S. Department of Energy (DOE), 1988. Effect of Freezing and Thawing on UMTRA Covers,
Albuquerque, New Mexico, October.
 U.S. Department of Energy (DOE), 1989. UMTRA-DOE Technical Approach Document,
Revision II, UMTRA-DOE/AL 050425.0002. December.
 U.S. Nuclear Regulatory Commission (NRC), 1984. Radon Attenuation Handbook for Uranium
Mill Tailings Cover Design, NUREG/CR-3533
 U.S. Nuclear Regulatory Commission (NRC), 1989. Calculation of Radon Flux Attenuation by
Earthen Uranium Mill Tailings Covers, Regulatory Guide 3.64.
 U.S. Nuclear Regulatory Commission (NRC), 1990. "Final Staff Technical Position, Design of Erosion Protective Covers for Stabilization of Uranium Mill Tailings Sites," August.
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 U.S. Nuclear Regulatory Commission (NRC), 2003. Standard Review Plan for the Review of a Reclamation Plan for Mill Tailings Sites under Title II of the Uranium Mill Tailings Radiation Control Act of 1978. NUREG-1620, Revision 1, June.
As mentioned above, the requirements set out in Part I.D.8 of the GWDP require that the cover system for each tailings cell will be designed and constructed to meet the following minimum performance requirements for a period of not less than 200 years:
 Minimize the infiltration of precipitation or other surface water into the tailings, including, but not limited to the radon barrier
 Prevent the accumulation of leachate head within the tailings waste layer that could rise above or over-top the maximum FML elevation internal to any disposal cell, i.e. create a “bathtub” effect
 Ensure that groundwater quality at the compliance monitoring wells does not exceed the GWQSs or GWCLs specified in Part I.C.1 and Table 2 of the GWDP
3.3.2 Radon Flux Attenuation
Analyses of radon attenuation through the monolithic ET cover have been performed, and incorporate the current cover design, final grading plan, and results of geotechnical testing of material properties. Emanation of radon-222 from the top surface of the proposed cover system for the tailings cells was calculated using the NRC RADON model (NRC, 1989). The model was used to confirm that the designed
cover system can achieve the State of Utah’s long-term radon emanation standard for uranium mill tailings (Utah Administrative Code, Rule 313-24), 20 picocuries per square meter per second (pCi/m2-s). The
analyses were conducted following the guidance presented in NRC publications NUREG/CR-3533 (NRC, 1984) and Regulatory Guide 3.64 (NRC, 1989). Results of the analyses show that the proposed cover system can reduce the rate of radon-222 emanation to less than 20 pCi/m2-s, averaged over the entire area of each tailings cell. A complete description of the radon attenuation analyses conducted for the ET cover system is included in Appendix A.
3.3.3 Infiltration Analysis
Infiltration modeling was conducted for the monolithic ET cover and a complete description of the analyses
were provided in the ICTM Report (MWH, 2010). The modeling was updated to address DWMRC comments on the ICTM Report (DRC, 2012; 2013) and to incorporate additional geotechnical and
hydrologic data collected in as part of field investigations conducted in 2010 and 2012 for cover borrow material and in 2013 for in situ tailings. The updated infiltration modeling results were presented in EFRI (2012b) and EFRI (2015c). The evaluation of infiltration of precipitation through the cover system was evaluated with the computer program HYDRUS-1D (Simunek et al., 2009). The modeling used historical daily meteorological data for precipitation and evapotranspiration over a 57-year climate period, as well as assumptions that were either conservative or based on anticipated conditions. Given the flat nature of the cover (less than 1 percent slope), no run-on- or runoff-based processes were assumed to occur. As a result, precipitation applied to the cover surface was removed through evaporation or transpiration, retained in the soil profile as storage, or transmitted downward as infiltration.
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The model-predicted average long-term water flux rate through the cover system is 2.3 mm/yr. Additional model scenarios were analyzed to evaluate the sensitivity of the soil properties, climate, and reduced
vegetation parameters. The range of average long-term water flux rates for these scenarios varied from 1.9 to 8.6 mm/yr. The model-predicted water flux rates through the monolithic ET cover indicate that the available cover storage capacity should be sufficient to significantly reduce infiltration through the cover system. A complete description of the infiltration analyses conducted for the monolithic ET cover is provided in MWH (2010) with updates provided in EFRI (2012b, 2015c), and is summarized in Appendix A to this Reclamation Plan.
3.3.4 Freeze/Thaw Evaluation
A freeze/thaw analysis was performed for the monolithic ET cover system, utilizing geotechnical properties of materials specified for use in construction of the cover. The calculations of frost penetration at the site
were performed with the computer program ModBerg (CRREL), which uses a built-in weather database, as well as user-defined soil parameters.
The freeze/thaw calculations estimate the total depth of frost penetration for the cover system as 32 inches (2.67 ft). The frost penetration depth is not anticipated to exceed the depth of Layers 3 and 4 of the cover system (combined depth of 4 ft). The physical and hydraulic properties of these cover system layers after construction are expected to be close to long-term properties from pedogenic processes, such that post-construction changes due to freeze/thaw should be minimal. A complete description of the freeze/thaw analyses conducted for the proposed cover system is presented in the Updated Tailings Cover Design Report, attached as Appendix A to this Reclamation Plan.
3.3.5 Soil Cover Erosion Protection
The erosional stability of the reclaimed tailings cells was evaluated in terms of long-term water erosion
under extreme storm conditions. The analyses were conducted in general accordance with NRC guidelines (NRC, 1990; Johnson, 2002). A description of the analyses performed is presented in Appendix A.
The components of erosion protection for the reclaimed tailings cells consist of the following:
 The cover on the top surface of Cells 1, 2, and 3, with slopes of 0.5 percent, would be constructed as a vegetated slope, with 6 inches of topsoil.
 The portions of Cell 2 with a top surface of 1 percent slope, and the portions of Cells 4A and 4B with 0.8 percent slope, would be constructed as a vegetated slope with 6 inches of topsoil mixed with 25 percent (by weight) gravel (maximum diameter of 1 inch).
 Erosion protection of external (5H:1V) side slopes would be provided by various sized angular and rounded riprap with layer thicknesses ranging from 6 to 8 inches and median particle sizes ranging from 1.7 to 5.3 inches. A 6-inch layer of filter material would be placed between the erosional protection layer and underlying soil layer in locations with riprap greater than 1.7 inches. A narrow
zone of this filter will also be placed at the interface between the riprap (greater than 1.7 inches) on the external side slopes and the cover surface erosion protection layer.
 The toe of embankment slopes will have erosional protection and scour protection on the west and east sides of the cells provided by a rock apron measuring approximately 10 inches deep and 5 feet
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wide, with a median particle size of 3.4 inches. On the south side of cells 4A and 4B, and east side of Cell 4A, the rock apron would be approximately 3 feet in depth, 13 feet in width, and have a
median particle size of 10.6 inches. On the north side slope of the Cell 1 disposal area, the rock apron would be approximately 3 feet deep, 11 feet wide, and have a median particle size of 9 inches.
 The Sedimentation Basin area will be graded to 0.1 percent slope and constructed as a vegetated slope with 6 inches of topsoil.
 The Diversion Channel will be excavated into bedrock.
3.3.6 Slope Stability Analysis
Static (long-term) and pseudo-static slope stability analyses were performed for two critical cross sections through the tailings embankments. The analyses were performed using limit equilibrium methods with the
computer program SLOPE/W (Geo-Slope, 2007). A complete description of the input parameters and assumptions used in the analyses is provided in Appendix A. Material strength parameters used for the
analyses were based on historical laboratory testing on tailings and clay materials (Advanced Terra Testing, 1996; Chen and Associates, 1987; D’Appolonia, 1982; and Western Colorado Testing, 1999), laboratory testing conducted in 2010 and 2012 on potential cover borrow materials (see Attachment B of EFRI, 2012a), laboratory testing conducted in 2013 on tailings (MWH, 2015b) and typical published values.
The mean Peak Ground Acceleration (PGA) for reclaimed conditions is 0.15g based on the site specific PSHA (MWH, 2015a). This PGA represents the seismic loading from the Maximum Credible Earthquake (MCE). The seismic coefficient used for the pseudo static stability analysis was 0.10 g (equal to 2/3 of the
PGA).
The calculated factors of safety range from 2.6 to 3.9 and 1.7 to 2.5 for static and pseudo-static loading
conditions, respectively. The calculated factors of safety for both the long-term static condition and the pseudo-static condition exceed the required values of 1.5 and 1.1 respectively (NRC, 2003).
3.3.7 Tailings Dewatering
Cells 2, 3, 4A, and 4B are constructed to allow tailings dewatering. Dewatering analyses have been conducted for these tailings management cells assuming the cells receive tailings to the maximum permitted tailings elevation. Dewatering analyses for Cells 2 and 3 were conducted by MWH and are presented in Appendix A. Dewatering analyses for Cells 4A and 4B were conducted by Geosyntec (2007a, 2007b). The
pertinent excerpts from MWH (2010), Geosyntec (2007a, 2007b), and DRC (2008) are included in Appendix A.
Water levels in Cells 2 and 3 were measured during the October 2013 tailings investigation (MWH, 2015b). Results of the investigation indicated migration of water towards the sump in Cell 2. This was expected since water has been pumped from the Cell 2 sump since 2008. Dewatering of Cell 3 has not yet started and the October 2013 investigation reflected this, with measured water levels a few feet below the tailings surface.
To monitor changes in water levels due to dewatering prior to and after final cover placement, installation of standpipe piezometers was recommended across the cells prior to the first phase of final cover placement
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and extension of the piezometers during final cover placement. These piezometers will provide information on the rate and extent of dewatering of the tailings. The piezometers are primarily located
adjacent to the settlement monuments to minimize damage to the piezometers during cover construction, while providing sufficient locations to evaluate the water levels. Water levels are recommended to be monitored at the same frequency and duration as the settlement monuments. Piezometer locations for Cell 2 are shown in Appendix L of the Updated Tailings Cover Design Report.
3.3.8 Settlement and Liquefaction Analyses
Settlement analyses and evaluation of liquefaction potential for the tailings were performed for the tailings cells. A discussion of the analyses and results are provided in Appendix A.
One-dimensional settlement analyses were conducted to evaluate settlement due to placement of final cover, dewatering of the tailings cells, long-term static (creep) settlement, and seismically induced (seismic)
settlement. The results of these analyses of specific locations were used to evaluate differential settlement and the potential for cover cracking. The CPT locations in Cell 2 and 3 from the October 2013 tailings investigation (MWH, 2015b) were selected as the locations for the settlement analyses. Parameters used for the settlement analyses are summarized in Appendix A. Tailings profiles and properties are based on results presented in MWH (2015a). Parameters for cover materials are based on cover material testing conducted in 2010 and 2012 (summarized in Appendix A). Evaluation of total settlement due to final cover placement and dewatering indicates potential future settlement during active maintenance ranging from 0.9 to 1.6 feet.
The majority of this settlement is expected occur after Phase 1 cover construction with the remaining
settlement occurring soon after Phase 2 cover construction. During this time, additional fill may be placed in low areas to maintain positive drainage of the cover surface. The estimated total predicted future long-
term settlement that could occur (due to creep and seismic settlement) after the maintenance period is complete ranges from approximately 0.3 to 0.7 feet. Estimates of total long-term settlement were calculated by summing the static creep and seismic settlement estimates. As such, these estimates are considered somewhat conservative, as they are not independent (i.e. as long-term static creep progresses, void ratio reduction will occur and the potential for seismic settlement will reduce over time as a result). The estimated differential settlement after completion of active maintenance is sufficiently low that slope reversal and ponding is not expected to occur on a cover slope of 0.5 to 1.0 percent. In addition, the results indicate that cracking of the highly-compacted radon barrier due to settlement-induced strains is not expected.
Liquefaction analyses were performed to evaluate the risk of earthquake-induced liquefaction of the tailings. Two methods (Idriss and Boulanger, 2008; Youd et al., 2001) were used for the analyses. Material
properties were obtained from results of laboratory tests on tailings samples collected during the October 2013 tailings investigation of Cells 2 and 3 (MWH, 2015b). Other parameters used were based on CPT data measured during the October 2013 tailings investigation. Results of the site-specific PSHA (MWH, 2015a) were used in the analyses and include a PGA of 0.15g for an approximate 10,000-year return period, with the mean seismic source being a magnitude (Mw) 5.5 event occurring 20 km from the site. Computed factors of safety against liquefaction range from 2.0 to 2.8. Based on the calculated factors of safety, the tailings are not susceptible to earthquake-induced liquefaction.
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3.3.9 Vegetation and Biointrusion
The plant species proposed for the cover system consist of native perennial grasses, forbs, and shrubs. The
use of these species in reclamation of the tailing management cells provide a permanent or sustainable plant cover because of the highly adapted nature of these species to existing site conditions, their tolerance to environmental stresses such as drought, fire, and herbivory, and their ability to effectively reproduce over time. These species can coexist and fully utilize plant resources to minimize the establishment of invasive weeds and deep rooted woody species on the site. Once established, the proposed seed mixture produce a grass-forb-shrub community of highly adapted and productive species that can effectively compete with undesirable species. A complete discussion of cover vegetation is provided in Appendix A.
The proposed cover system is designed to minimize both plant root and burrowing animal intrusion through the use of thick layers of soil cover (total thickness 9.5 to 10.5 ft) in combination with a highly compacted
layer placed at a depth that is below the expected rooting and burrowing depths of species that may inhabit the site. Root growth and animal burrowing into the highly compacted radon attenuation layer (beginning
at a depth of 4 ft) will be restricted because of the high density of this material (compaction to 95 percent relative compaction based on the standard Proctor test). In addition, both root density and the size of roots decrease at a rapid rate with rooting depth, further limiting the potential for root growth into the compacted radon attenuation layer of the cover system. A complete discussion of the biointrusion evaluation through the ET cover is presented in Appendix A.
3.3.10 Cover Material/Cover Material Volumes
Material volumes required for construction of the interim cover, final cover, and erosion protection are
provided in Table 3.3-1. The quantities of materials available for construction of the cover are also provided in Table 3.3-1. A summary of the volumes of borrow stockpiles was provided in Appendix A. Sufficient
quantities are available from on-site sources for the topsoil and random fill materials. The bedding and gravel materials would be obtained from off-site commercial sources. Three commercial sources have been identified as potential sources for the bedding and gravel materials. The potential off-site sources were listed in Appendix A. Sufficient quantities of material are available from the off-site sources identified.
Table 3.3-1. Reclamation Cover Material Quantity Summary
Material Quantity Required for Reclamation (cy)
Quantity Available (Identified Sources) (cy)
Topsoil (for Erosion Protection Layer) 195,000 284,100 (on-site stockpiles)
Gravel (1-inch minus for Erosion Protection Layer) 24,000 Sufficient quantity available (off-site commercial source)
Random Fill (total for additional Layer 1 material, Layer 2, and Layer 3) 3,500,000 3,596,621 (on-site stockpiles)
Riprap (for 5H:1V side slopes and rock aprons) 38,000 Sufficient quantity available (off-site commercial source)
Riprap Bedding/Filter Layer 16,0001 Sufficient quantity available (off-site commercial source)
Note: Based on 6-inch thick medium sand bedding/filter layer beneath riprap.
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4 MILL DECOMMISSIONING PLAN

The preliminary plans for decommissioning of the Mill are presented in the plan included as Appendix B to this Reclamation Plan. This information has been updated since the previous Reclamation Plan, Revision
5.0 (Denison, 2011c). The Preliminary Decommissioning Plan attached as Appendix B includes a description of the following activities to be performed during the decommissioning process:
 Development and implementation of health and safety procedures
 Execution of pre-decommissioning activities
 Demolition of above-ground and under-ground facilities, and placement of these materials in the Cell 1 Disposal Area or the last active tailings cell
 Excavation of contaminated subsoils from the process area and placement in the Cell 1 Disposal
Area or the last active tailings cell
 Clean-up of windblown contamination and placement in the Cell 1 Disposal Area or the last active
tailings cell
 Regrading and revegetation
The Plan further describes the requirements prior to demolition and the procedures to be used for specific locations within the process area, as well as requirements for personnel training, environmental monitoring,
and management of water and contaminants. The work should be conducted under the EFRI Radiation Protection Manual, as directed by the site Radiation Safety Officer.
The EFRI Radiation Protection Manual for Reclamation is included as Attachment D to this Reclamation Plan.
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5 REVERSION TO EXISTING COVER DESIGN

5.1 Background
On November 11, 2015, the UDEQ Division of Waste Management and Radiation Control (DWMRC) recommended EFRI develop a plan to begin reclamation of the tailings management system cells. This
plan would consist of placing the cover system presented in this Plan (the “Proposed Cover System”) on Cell 2 and demonstrating acceptable cover performance via a performance monitoring program.
Per the Stipulation and Consent Agreement (SCA) in development between EFRI and DWMRC, Cell 2 reclamation is planned to occur in 2 phases. Phase 1 is comprised of Layers 1 and 2 of the Proposed Cover System, and will be placed on Cell 2 along with a Primary Test Section that contains all of the Proposed Cover System, including the vegetative cover. The Primary Test Section along with a Supplemental Test Section (located off of Cell 2, and relating only to vegetative cover and erosion control) will be tested over a period of approximately 7 years (the “Cell 2 Test Period”).
Under the SCA, the Cell 2 Primary Test Section and Supplemental Test Section will have to meet required
performance criteria to verify the effectiveness of the Proposed Cover System and initiate Phase 2 cover placement.
5.2 Proposed Cover Design Meets all Applicable Regulatory Criteria
If the Primary Test Section and Supplemental Test Section demonstrate that the Proposed Cover System meets all applicable regulatory criteria, then:
a) Cell 2
Phase 2, comprised of Layer 3, Layer 4 and the vegetative cover of the Proposed Cover System, will be placed on Cell 2, in accordance with the SCA and Section 6.0 below;
b) Other Tailings Management System Cells being Reclaimed during Cell 2 Test Period
In the event that any other tailings management system cells are to be reclaimed during the Cell 2 Test
Period, such tailings impoundments will be reclaimed by placing Phase 1 of the Proposed Cover System on the cell, and then waiting until the Cell 2 test is completed. Thereafter, reclamation of the cells will be completed in the same manner as Cell 2, in accordance with the SCA and Section 6.0 below; and
c) Other Tailings Management System Cells Being Reclaimed after Cell 2 Test Period
Upon final reclamation in accordance with Section 6.0 below, the other tailings management system cells, which had not commenced reclamation during the Cell 2 test period, would be reclaimed with the Proposed Cover System.

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5.3 Proposed Cover Design Does not Meet all Applicable Regulatory Criteria
If the Cell 2 Primary Test Section and Supplemental Test Section fail to meet the required performance criteria and follow up actions (to be identified in the SCA), then:
a) Cell 2
EFRI will complete Cell 2 Phase 2 cover placement by placing Layers 2, 3, and 4 of the Existing Cover System presented in Reclamation Plan Revision 3.2b (Denison, 2011b) (the “Existing Cover System”) on top of the Phase 1 layers, as follows:
i. the Cell 2 Phase 1 cover system (which includes the Proposed Cover System Layers 1 and 2) would remain in place;
ii. the Existing Cover System Layer 2, comprised of 1 ft (30.5cm) Radon Barrier (compacted clay), would be placed on top of the Cell 2 Phase 1 cover;
iii. The Existing Cover System Layer 3 comprised of 2 ft (61 cm) Frost Barrier (random fill), would be placed on top of the Existing Cover System Layer 2; and
iv. the Existing Cover System Layer 4, comprised of 3 in (7.6 cm) Rock Armor would be placed on top of Existing Cover System Layer 3.
b) Other Tailings Management System Cells being Reclaimed during Cell 2 Test Period
In the event that any other tailings management system cells are to be reclaimed during the Cell 2 Test Period, such cells will be reclaimed by placing Phase 1 of the Proposed Cover System on the cells, and
then waiting until the Cell 2 test is completed. Thereafter, reclamation of the cell will be completed in the same manner as Cell 2, in accordance with the SCA and Section 6.0 below. If Phase 1 of the Proposed Cover System is not completed during the Cell 2 Test Period for any such cells, then such cells may be reclaimed with the Existing Cover System; and
c) Other Tailings Management System Cells Being Reclaimed after Cell 2 Test Period
Upon final reclamation in accordance with Section 6.0 below, the other tailings management system cells which had not commenced reclamation during the Cell 2 Test Period, would be reclaimed with
the Existing Cover System.
Page 6-1 Revision 5.1B Energy Fuels Resources (USA) Inc. White Mesa Mill Reclamation Plan

6 MILESTONES AND SCHEDULE COMMITMENTS FOR RECLAMATION
6.16.1. Background Utah Administrative Code R313-24-4, incorporating by reference 10 CFR Part 40 Appendix A Criterion 6A (“Criterion 6A”) paragraph (1), provides that: “For impoundments containing uranium byproduct materials, the final radon barrier must be completed as expeditiously as practicable considering technological feasibility after the pile or impoundment ceases operation in accordance with a written,
Commission-approved reclamation plan. (The term as expeditiously as practicable considering technological feasibility as specifically defined in the Introduction of this appendix includes factors beyond
the control of the licensee.) Deadlines for completion of the final radon barrier and, if applicable, the following interim milestones must be established as a condition of the individual license: windblown tailings retrieval and placement on the pile and interim stabilization (including dewatering or the removal of freestanding liquids and recontouringre-contouring). The placement of erosion protection barriers or other features necessary for long-term control of the tailings must also be completed in a timely manner in accordance with a written, Commission-approved reclamation plan.”
As the final radon barrier on an impoundment cannot be completed until the impoundment has been
adequately dewatered and the tailings have stabilized, the timing of which depends on physical and technological factors beyond the control of the licensee, it is not possible to establish absolute deadlines or
milestones for reclamation at the time of approval of this Plan.

In past reclamation plans for the Mill, the requirement to set milestones was satisfied by the requirement in the Plan to set a schedule in the future as conditions allow. Under Section 5.3.1 of the Company’s Reclamation Plan Revision 3.2, placement of cover materials will be based on a schedule determined by analysis of settlement data, piezometer data and equipment mobility considerations. This gives the regulator authority to set deadlines and milestones as conditions allow, through the future approval of the schedule. The deadlines and milestones in the approved schedule would then serve as the deadlines and
milestones for reclamation of the Mill, as contemplated by 10 CFR Part 40 Appendix A, Criterion 6A(1). ,
In an attempt to provide as much specificity as possible in this Plan, as contemplated by 10 CFR Part 40 Appendix A, Criterion 6A(1), this Section sets out the sequence of interim milestones and deadlines for reclamation of completion of the final radon barrier for individual tailings impoundments at the Mill and for (referred to in this Section as “tailings impoundments” or “conventional impoundments”) at the Mill after each such impoundment begins final closure. It also sets out milestones for the removal and disposal of non-conventional impoundments (referred to in this Section as “evaporation ponds” or “non-conventional impoundments”) after each such impoundment begins final closure, as well as additional milestones applicable to final Mill site closure, to the extent. A table that they can be established at this time. A more detailed schedule, which incorporates the sequence of interim milestones and deadlines set out below, would be submitted to the Director for approval prior to final Mill site closuresummarizes all of these milestones is included in Section 6.2.6 below.
Also included below are schedule commitments for other events or actions which are not “milestones” required under Criterion 6A, but instead are schedule commitments to be achieved in order to ensure that those events or actions are completed in a timely manner. As these schedule commitments are not milestones they do not come under the specific provisions of paragraph (2) of Criterion 6A. However, a
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general timeliness standard for completing those items is retained. The licensee must complete those actions in a timely way, and the Director has the authority to take action if necessary in this regard. As
these schedule commitments are not milestones required under Criterion 6A(1), they are not included in the table set out in Section 6.2.5 below.
6.26.2. Milestones and Schedule Commitments 6.2.16.2.1. General
a)(a) Definition of “Operation”
“Operation” means that a tailingsan impoundment is being used for the continued placement of tailings sandsuranium byproduct material or tailings or is onin standby status for such placement. An impoundment is in operation from the day that uranium byproduct material or tailings sands are first placed in the impoundment until the day that final closure begins. Final closure means the activities
following operations to reclaim the tailings impoundment.
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b)(b) When Final Closure of an Impoundment Begins
An Final closure of an impoundment shall be considered to have ceased operations, and final closure
shall be deemed to have commenced,begins when the owner or operator provides written notice to the EPA and to the Director that: i) In the case of a conventional impoundment (A)i.e., a tailings impoundment), the impoundment is no longer being used for the continued placement of tailings sands and EFRI has advised the Director in writing that the impoundmentreceiving uranium byproduct material or tailings, is no longer being used for the continued placement of tailings sands and is not on standby status for such receipt and is being managed under an approved reclamation plan for that impoundment or facility closure plan; and ii) In placement; or (B)the case of a non-conventional impoundment (e.g., an evaporation
pond), the impoundment is no longer required for evaporation or holding purposes, is no longer on standby for such purposes and is being used for the continued placement of tailings sands, interim
cover has been placed over the entire surface area of themanaged under an approved reclamation plan for that impoundment, and dewatering activities have begun; or (C) the Mill or facility as a whole has commenced final closure plan. An approved reclamation plan prepared and a written notice to that effect has been provided to the Directorapproved in accordance with 10 CFR part 40, Appendix A is considered a reclamation plan for purposes of this Plan.paragraph 6.2.1(b).

c)(c) The Existing Tailings Management System at the Mill
The tailings management system at the Mill currently consists of three tailings impoundments: Cell
2, which is not in operation and is in final closure, and Cells 3 and 4A, which are in operation. Cell 1 is an evaporation pond. Cell 4B is currently being used as an evaporation pond and will continue to be used as an evaporation pond until it first starts to receive tailings sands or other byproduct material (other than solutions) for disposal. Future cells may commence as evaporation ponds, and will continue as evaporation ponds until they first receive tailings sands or other byproduct material (other than solutions) for disposal, at which time they will become tailings impoundments.
d)(d) The Proposed Cover Design and Existing Cover Design
This Plan presents a proposed evapotranspiration (ET) cover (the “Proposed Cover Design”) as a component of the reclamation plan for the tailings cellsimpoundments, to replace the rock armor cover design (the “Existing Cover Design”) set out in Appendix D to the Reclamation Plan Version 3.2b (Denison, 2011b). The Stipulation and Consent Agreement described in Section 6.2.1 (e) below and Section 5.0 above describe thea set of circumstances under which the Final Cover Design willcould be the Existing Cover Design rather than the Proposed Cover Design or the Existing Cover Design.. Section 5.0 of this Plan describes the manner in which EFRI willwould revert from the Proposed Cover Design to the Existing Cover Design if so required by the Stipulation and Consent Agreement and Section 5.0 of this Plan.

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(i)i) The Proposed Cover Design
The Proposed Cover Design will have a minimum thickness of 9.5 feet, and will consist of the following layers listed below from top to bottom:
 Layer 4 - 0.5 ft (15 cm) thick Erosion Protection Layer (topsoil-gravel admixture or topsoil)
(referred to herein as “Layer 4”)
 Layer 3 - 3.5 ft (107 cm) thick Water Storage/Biointrusion/Frost Protection/Secondary Radon Attenuation Layer (loam to sandy clay) (referred to herein as “Layer 3”)
 Layer 2 – 3.0 - 4.0 ft (91 to 122 cm) thick Primary Radon Attenuation Layer (highly
compacted loam to sandy clay) (referred to herein as “Layer 2”)
 Layer 1 - 2.5 ft (76 cm) thick (minimum) Secondary Radon Attenuation and Grading Layer (loam to sandy clay) (referred to herein as “Layer 1”)
All the layers combined comprise the monolithic ET cover system.
(ii)ii) The Existing Cover Design The Existing Cover Design will have a minimum thickness of 6 feet, and will consist of the following layers listed below from top to bottom:  Layer 4 -- 3 in (7.6 cm) Rock Armor  Layer 3 -- 2 ft (61 cm) Frost Barrier Layer (random fill)  Layer 2 -- 1 ft (30.5) Radon Barrier (compacted clay)
 Layer 1 -- Minimum 3 ft (91.4 cm) Platform Fill (random fill) (iii) Interim and Final Cover Layers
The “Interim Cover Layer” is, in the case of the Proposed Cover Design, Layer 1, and in the case of the
Existing Cover Design, Layer 1. The “Final Cover Layers” are, in the case of the Proposed Cover Design, Layers 3, and 4, and in the case of the Existing Cover Design, Layers 2, 3 and 4. In the case
of the Proposed Cover Design only, Layer 2 will be added between placement of the Interim Cover Layer and the Final Cover Layers.
e)(e) The Stipulation and Consent Agreement EFRI and the Director of the UDEQ DWMRC are developinghave entered into a Stipulation and Consent Agreement (the “SCA”), which, when finalized, will set sets out the terms on which the Mill will test the effectiveness of the Proposed Cover Design and, together with Section 5.0 of this Plan, the circumstances in which the approved Cover Design for reclamation of tailings impoundments willcould be a variation of the Proposed Cover Design, or a variation thereof, or the Existing Cover
Design. , rather than the Proposed Cover Design.
6.2.26.2.2. Deadlines and, Interim Milestones and Schedule Commitments for Closure of Cell 2 The deadlines and interim milestones and schedule commitment dates for closure of Cell 2 will beare set out in the SCA. The requirements set out in the SCA, when finalized, will be are incorporated by reference into this Plan as if set out in this Plan. The final radon barrier for Cell 2 (Layers 1 and 2 under the Proposed Cover Design) has been put in place. Radon flux measurements taken since the final radon barrier has been placed onto Cell 2 have been well below the 20 pCi/m2s standard set out in Criterion 6A.
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6.2.36.2.3. Milestones and Schedule Commitments for Closure of an Individual a Conventional Impoundment (i.e., a Tailings Impoundment,), other than Cell 2, that Ceases Operation While the Mill Facility as a Whole Remains in Operation For each A conventional impoundment (i.e., tailings impoundment,), other than Cell 2, that ceases operation may begin final closure at any time, including while the Mill facility as a whole remains in operation, as well as during or after final Mill site decommissioning and closure. Once final closure of thea conventional impoundment shall begin, andbegins as specified in Section 6.2.1 b) above, the final radon barrier for the impoundment shall be completed as expeditiously as practicable thereafter considering technological feasibility (including taking into consideration factors beyond the control of the licensee) in accordance with this Plan and the deadline anddeadlines, milestones and schedule commitments set out below:
a)(a) Interim Stabilization (Including Dewatering or the Removal of Freestanding Liquids and
Re-contouring) of eachthe Tailings Impoundment.
(i)i) Removal of Freestanding Liquids
Commencing on the date the impoundment ceases operations andbegins final closure of the impoundment is deemed to commence in accordance with Section 6.2.1 b) above, the addition of liquids to the tailings impoundment, other than by natural precipitation, will be minimizedcease, and free standing liquids will be allowed to dry out by natural evaporation. To the extent reasonably practicable, and if excess evaporative capacity is available in other cells in the tailings management system without interfering with Mill operations, the Mill will
transfer solutions out of the tailings impoundment and into other tailings impoundments and/or evaporation ponds in order to enhance evaporation and removal of solutions from the
impoundment. This item must be completed within one year after the impoundment begins final closure. This deadline is a milestone as required by Criterion 6A(1), and is subject to the
provisions of Criterion 6A(2). (ii)ii) Re-contouring Re-contouring of the tailings impoundment, in accordance with Drawings and Attachment A (Technical Specifications) of this Plan (“Re-contouring”), will commence within 180 days after upon removal of freestanding liquids from the impoundment and willmust be completed within 180 days thereafter, or such longer timetwo years after the impoundment begins final closure. This deadline is a milestone as may be required if instability of the tailings sands
restricts or hampers such activities, or as may be approved by Criterion 6A(1), and is subject to the Director.provisions of Criterion 6A(2). iii) Commencement of Dewatering Dewatering of the impoundment shall commence upon completion of re-contouring of the impoundment, and shall continue until the impoundment is dewatered as contemplated by item 6.2.3(a)(vii) below. This deadline is a milestone as required by Criterion 6A(1), and is subject to the provisions of Criterion 6A(2). (iii)iv) Placement of Interim Cover Layer 1

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` Upon completion of Rere-contouring of the impoundment, EFRI will complete placement of the Interim Cover Layer 1 (Secondary Radon Attenuation and Grading Layer
under the Proposed Cover Design or Platform Fill under the Existing Cover Design, as applicable) on the impoundment, in accordance with this Plan. If the Director has confirmed
in writing prior to April 1 in any given year that the re-contouring of the impoundment has been completed, then placement of the Interim Cover Layer on the impoundment will This item must be completed within three years after the date the impoundment begins final closure. This deadline is a milestone as required by Criterion 6A(1), and is subject to the provisions of Criterion 6A(2). v) Placement of Layer 2 (Final Radon Barrier) Upon EFRI being satisfied that there have been decreasing trends in settlement followed by a maximum of 0.1 feet (30 mm) of cumulative settlement over 12 months (for at least 90 percent of the settlement monuments), or at such earlier time as EFRI may determine, EFRI shall
commence placing Layer 2 (the Primary Radon Attenuation Layer under the Proposed Cover Design or the Radon Barrier under the Existing Cover Design, as applicable) on the
impoundment. This item must be completed as expeditiously as practicable considering technological feasibility (including factors beyond the control of the licensee), but in any event within seven years after the impoundment begins final closure. This deadline is a milestone as required by Criterion 6A(1), and is subject to the provisions of Criterion 6A(2).
vi) Placement of Layer 3 After placement of prior to December 31 of the following yearLayer 2, EFRI will place Layer
3 (the Water Storage/Biointrusion/Frost Protection/Secondary Radon Attenuation Layer under the Proposed Cover Design or the Frost Barrier Layer under the Existing Cover Design, as
applicable) on the impoundment. Timing of commencement of this item will be at the discretion of EFRI, and Layer 3 may be placed prior to or after completion of dewatering. The schedule commitment for this item is to have it completed within the later of (A) seven years after the impoundment begins final closure and (B) two years after completion of placement of Layer 2 on the impoundment, or such later date as may be approved by the Director. This item is not a milestone required under Criterion 6A(1) because it follows placement of the final radon barrier and is not required for that action, and because there is a separate milestone for dewatering. Instead, this item is included as a schedule commitment to be achieved in order to ensure that the activity is completed in a timely manner. As this schedule commitment is not
a milestone it does not come under the specific provisions of paragraph (2) of Criterion 6A. However, a general timeliness standard for completing this activity is retained. EFRI must
complete this activity in a timely way, and the Director has the authority to take action if necessary in this regard. (iv)vii) Completion of Dewatering Dewatering of the impoundment shall commence within 180 days after completion of placement of the Interim Cover Layer over the entire surface area of the impoundment. Dewatering shall continue until the Settlement Monitoring Criteria described in paragraph 6.2.3 b) below are determined by the Directorbe considered to be satisfied.

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b) Placement of Final Cover Layers After placement of the Interim Cover Layer on the impoundment in accordance with paragraph
6.2.3 a)(iii) above is complete, settlement monuments when, after the placement of Layer 2 and piezometers in the impoundment will be monitored in accordance with this Plan. In the case of the
Proposed Cover Design (but not the Existing Cover Design), Layer 3 (if Layer 2 will be3 is placed on top of the Interim Cover Layer within two years after placement of the Interim Cover Layer on the impoundment (or such later date as determined by the Director).
Settlement and prior to completion of dewatering data will be evaluated to determine if sufficient settlement has occurred to facilitate placement of the Final Cover Layers on the impoundment and to minimize maintenance of the final cover surface. Decreasing) decreasing trends in settlement followed by a maximum of 0.1 feet (30 mm) of cumulative settlement over 12 months (for at least 90 percent of the settlement monuments) will be considered acceptable (the “Settlement Monitoring Criteria”) to proceed with placement of the Final Cover Layers on the
impoundment. have occurred. This item must be completed within the later of (A) seven years after the impoundment begins final closure and (B) two years after completion of placement of
Layer 2 on the impoundment. This deadline is a milestone as required by Criterion 6A(1), and is subject to the provisions of Criterion 6A(2). Commencement
viii) Placement of placement ofLayer 4 Under the FinalProposed Cover LayersDesign Placement of Layer 4 under the Proposed Cover Design (Erosion Protection Layer) on the impoundment will commence after the Director has confirmed in writing that the Settlement Monitoring Criteria have been satisfied for the impoundment.completion of dewatering (this item does not apply to the Existing Cover Design). The schedule commitment for this item is
to have it completed within the later of (A) eight years after the impoundment begins final closure and (B) two years after completion of placement of Layer 3 on the impoundment, or
such later time as may be approved by the Director. This item is not a milestone required under Criterion 6A(1), because it follows placement of the final radon barrier and is not required for that activity. Instead, this item is included as a schedule commitment to be achieved in order to ensure that the activity is completed in a timely manner. As this schedule commitment is not a milestone it does not come under the specific provisions of paragraph (2) of Criterion 6A. However, a general timeliness standard for completing this activity is retained. EFRI must complete this activity in a timely way, and the Director has the authority to take action if necessary in this regard. If the Director has confirmed in writing prior to April 1 in any given year that the Settlement
Monitoring Criteria have been satisfied for the impoundment, then placement of the Final Cover Layers on the impoundment will be completed prior to December 31 of the following year, or such
later date as may be approved by the Director.
c) The Placement of Erosion Protection Barriers or other Features Necessary for Long-term Control
of the Tailings

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(i)ix) Vegetative Cover
If the Cover Design, as approved by the Director in accordance with the procedures described in the SCA and Section 5.0 of this Plan, is the Proposed Cover Design or otherwise calls for
vegetative cover on the impoundment, then revegetation of the cover will take place at the completion of placement of the Final Cover LayersLayer 4 (Erosion Protection Layer) on the impoundment, in accordance with the revegetation plan set out in Appendix J to the Updated Cover Design Report. All required seeding for re-vegetation will commence in the first available growing season after the completion of placement of the Final Cover LayersLayer 4 (Erosion Protection Layer) on the impoundment, as determined by the Director, and will be completed by the end of such growing season, or such later time as may be approved by the Director. This item is not a milestone required under Criterion 6A(1), because it follows placement of the final radon barrier and is not required for that activity. Instead, this item is included as a schedule commitment to be achieved in order to ensure that the activity is completed in a timely manner. As this schedule commitment is not a milestone it does not come
under the specific provisions of paragraph (2) of Criterion 6A. However, a general timeliness standard for completing this activity is retained. EFRI must complete this activity in a timely
way, and the Director has the authority to take action if necessary in this regard. (ii)x) Rock Armor If the Cover Design, as approved by the Director in accordance with the procedures described in the SCA and Section 5.0 of this Plan, is the Existing Cover Design or includes Layer 4 (Rock Armor) of the Existing Cover Design, then rock armor shall be placed on the tailings
impoundment, in accordance with Reclamation Plan 3.2b (Denison, 2011b). In addition, rock armor is required for the exterior slopes of the impoundment under the Proposed Cover Design.
Such placement, will commence within 180 daysone year after completion of placement of the Final Cover Layersdewatering on the impoundment in accordance with Section 5.0 of this Plan,
and will be completed within 180 days thereafter, or such or such later date as may be approved by the Director.later date as may be approved by the Director. This item is not a milestone required under Criterion 6A(1), because it follows placement of the final radon barrier and is not required for that activity. Instead, this item is included as a schedule commitment to be achieved in order to ensure that the activity is completed in a timely manner. As this schedule commitment is not a milestone it does not come under the specific provisions of paragraph (2) of Criterion 6A. However, a general timeliness standard for completing this activity is retained. EFRI must complete this activity in a timely way, and the Director has the authority to take action if necessary in this regard.

d)(b) Leaving a Portion of an Impoundment Open for Disposal of On-site Generated Trash or
11e.(2) Byproduct Material from ISR Operations
The License authorizes a portion of a specified impoundment to accept uranium byproduct material or such materials that are similar in physical, chemical, and radiological characteristics to the uranium mill tailings and associated wastes already in the pile or impoundment, from other sources, during the closure process, and on-site generated trash., provided that this does not result in a delay or impediment to emplacement of the final radon barrier over the remainder of the impoundment in a manner that will achieve levels of radon-222 releases not exceeding 20 pCi/m2s averaged over the entire impoundment. Reclamation of the disposal area, as appropriate, must be completed in a timely manner after disposal
operations cease in accordance with paragraph (1) of Criterion 66A; however, these actions are not
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required to be completed as part of meeting the deadline for final radon barrier construction for the impoundment.

(c) Windblown Tailings Retrieval and Placement on the Impoundment
As the Mill facility as a whole may still be in operation at the time the impoundment is being reclaimed, there may not be a need to retrieve any windblown tailings for placement on the impoundment at the time of final closure of the impoundment. Those activities will be required during final decommissioning of the entire Mill facility. Accordingly, the milestones associated with those activities are set out in Section 6.2.5 below. 6.2.4. Milestones Applicable to and Schedule Commitments for Closure of a Non-Conventional Impoundment (e.g., an Evaporation Pond) A non- conventional impoundment (e.g., an evaporation pond), may begin final closure at any time,
including while the Mill facility as a whole remains in operation as well as during or after final Mill site decommissioning and closure. Once final closure of a non-conventional impoundment begins as specified
in Section 6.2.1 b) above, final closure of the impoundment shall be accomplished in accordance with this Plan and the deadlines, milestones and schedule commitments set out below:
(a) Removal of Free-Standing Liquids from Evaporation Ponds Commencing on the date the impoundment begins final closure in accordance with Section 6.2.1 b) above, the addition of liquids to the impoundment, other than by natural precipitation, will cease, and
free standing liquids will be allowed to dry out by natural evaporation. To the extent reasonably practicable, and if excess evaporative capacity is available in other conventional or non-conventional
impoundments in the tailings management system, the Mill will transfer solutions out of the impoundment and into other impoundments in order to enhance evaporation and removal of solutions
from the impoundment. This item must be completed within five years after the impoundment begins final closure. Although this deadline is not a milestone required under Criterion 6A(1), because it is not linked to the placement of a final radon barrier in a non-operational tailings impoundment, EFRI agrees that for purposes of this Plan it shall be treated as a milestone as required by Criterion 6A(1), and as a result EFRI agrees that it will be subject to the provisions of Criterion 6A(2).
(b) Removal of Liners, Sediments and any Contaminated Soils from Evaporation Ponds Upon removal of the free-standing liquids from the impoundment, the licensee shall commence
removal of all liners, sediments and any contaminated soils from and under the impoundment and dispose of such materials into one or more conventional impoundments. This item must be completed within the earlier of (A) seven years after the impoundment begins final closure, and (B) three years after the removal of all free-standing liquids from the impoundment. Although this deadline is not a milestone required under Criterion 6A(1), because it is not linked to the placement of a final radon barrier in a non-operational tailings impoundment, EFRI agrees that for purposes of this Plan it shall be treated as a milestone as required by Criterion 6A(1), and as a result EFRI agrees that it will be subject to the provisions of Criterion 6A(2).
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6.2.46.2.5. Additional Milestone for Final Mill Closure
If the Mill facility as a whole has commenced final reclamation, as defined in this Plan, then the deadlines and interim milestones set out in this Section 6.2.4following additional milestone shall apply. after that
time: EFRI shall submit a detailed decommissioning and reclamation schedule (the “Schedule”) to the Director for approval at least twelve (12) months prior to planned final shutdown of mill operations. The Schedule shall set out the steps required to complete the final radon barrier and shall be subject to and shall include the following deadlines and interim milestones:
a)(a) Mill Demolition and Windblown Tailings Retrieval and Placement in a Tailings
Impoundment Mill demolition and windblown tailings retrieval, as contemplated by Attachment A (Technical Specifications) of this Plan shall commence within the later of (1) 180 days after approval of both the
Schedule and the decommissioning plan (the “Decommissioning Plan”) required to be submitted under License Condition 12.2; and (2) 180 days after sufficient solutions have been evaporated from
the tailings impoundment in which the materials are to be disposed of, and shall be completed within eighteen months thereafter, or such later date as may be approved by the Director.and disposal into one or more tailings impoundments shall commence upon commencement of final closure of the entire Mill site (“Mill Final Closure”), and shall be completed within four years after commencement of Mill Final Closure. This deadline is a milestone as required by Criterion 6A(1), and is subject to the provisions of Criterion 6A(2).
b) Reclamation of Individual Tailings Impoundments
Each un-reclaimed tailings impoundment, other than the tailings impoundment used for the placement of mill demolition materials and windblown tailings pursuant to paragraph 6.2.4 (a) above, shall be reclaimed
as expeditiously as practicable considering technological feasibility (including taking into consideration factors beyond the control of the licensee) in accordance with this Plan and the deadline and milestones set out Sections 6.2.3 (a) to (d) above. The first such tailings impoundment shall commence reclamation as soon as reasonably practicable after approval of the Schedule, or as otherwise set out in the Schedule, and each succeeding un-reclaimed tailings impoundment shall commence reclamation within 180 days after completion of reclamation of the previous tailings impoundment, or as otherwise set out in the Schedule. It should be noted that individual conventional and non-conventional impoundments may begin final closure before, during or after commencement or completion of Mill Final Closure, and the decision to begin final closure on any particular impoundment is not tied to Mill Final Closure. The milestones and schedule
commitments in Sections 6.2.3 and 6.2.4 above apply to final closure of conventional and non-conventional impoundments once they begin final closure in accordance with Section 6.2.1(b) above, whether during Final Mill Closure or otherwise. Further, as a tailings impoundment will be considered to be in operation so long as it is receiving byproduct material, which includes Mill decommissioning materials, windblown, slimes drain dewatering solutions etc., and an evaporation pond will be considered to be in operation so long as it is required for evaporation or holding purposes, it is expected that one or more tailings impoundments and evaporation ponds will continue in operation during all or part of the Mill decommissioning process. One or more impoundments may also continue in operation for licensed activities, such as direct disposal of 11e.(2) byproduct material from In Situ Recovery uranium operations or other licensed activities, after completion of Mill Final Closure.
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6.2.6. Summary Table of Milestones
The following table summarizes all of the milestones required by Criterion 6A(1), all of which are described in more detail above.
As the schedule commitments described in detail above are not milestones required under Criterion 6A(1), they are not included in the following table.
Milestone Reclamation Plan 5.1B Section Number Start End

1. Milestones for Closure of an Individual Conventional Impoundment (Tailings Impoundment) at any Time
1.1. Removal of Free Standing Liquids 6.2.3(a)(i) Date final closure of the impoundment begins in accordance with Section 6.2.1(b)
One year after impoundment begins final closure 1.2. Re-contouring 6.2.3(a)(ii) Upon removal of free standing liquids Two years after impoundment begins final closure 1.3. Commence Dewatering 6.2.3(a)(iii) Upon completion of Re-contouring NA
1.4. Placement of Layer 1 (Secondary Radon Attenuation and Grading Layer under the Proposed Cover
Design or Platform Fill under the Existing Cover Design, as
applicable)
6.2.3(a)(iv) Upon completion of re-contouring Three years after impoundment begins final closure
1.5. Placement of Layer 2 (Final Radon Barrier) (the Primary Radon Attenuation Layer under the Proposed Cover Design or the Radon Barrier under the Existing Cover Design, as applicable)
6.2.3(a)(v) Upon EFRI being satisfied that there have been decreasing trends in settlement followed by a maximum of 0.1 feet (30 mm) of cumulative settlement over 12 months (for at least 90 percent of the settlement monuments), or at such earlier time as EFRI may determine
As expeditiously as practicable considering technological feasibility (including factors beyond the control of the licensee), but in any event within seven years after impoundment begins final closure
1.6. Completion of Dewatering 6.2.3(a)(vii)) NA Within later of (A) seven years after impoundment
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Milestone Reclamation Plan 5.1B Section Number Start End
begins final closure and (B) two years after completion of placement
of Layer 2

2. Milestones for Closure of a Non-Conventional Impoundment (Evaporation Pond) at any Time
2.1. Removal of Free Standing Liquids 6.2.4(a)(i) Date final closure of the impoundment begins in accordance with Section 6.2.1(b)
Five years after impoundment begins final closure 2.2. Removal of Liners, Sediments and any
Contaminated Soils from Impoundment
6.2.4(a)(ii) Upon removal of the free-standing liquids from the impoundment
Earlier of (A) seven years after the impoundment begins final closure, and (B) three years after the
removal of all free-standing liquids from the impoundment

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Milestone Reclamation Plan 5.1B Section Number Start End
3. Additional Milestone Applicable to Mill Final Closure

Mill Demolition and Windblown Tailings Retrieval and Placement in a Tailings Impoundment
6.2.5(a) Upon commencement of Mill Final Closure Four years after Commencement of Mill Final Closure

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Additional Milestone Applicable to Mill Final Closure
Mill Demolition and Windblown Tailings Retrieval and
Placement in a Tailings Impoundment
6.2.5(a) Upon commencement of Mill Final Closure Four years after Commencement of Mill Final Closure

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REFERENCES

Advanced Terra Testing (1996). Physical soil data, White Mesa Project, Blanding Utah, July 25.
Agenbroad, L.D., W.E. Davis, and E.S. Cassells, 1981. 1980 Excavations in White Mesa, San Juan County, Utah.
Aki, K., 1979. Characterization of Barriers on an Earthquake Fault, Journal of Geophysical Research, v. 84, pp. 6140-6148.
Algermissen, S.T. and D.M. Perkins, 1976. A Probabilistic Estimate of Maximum Acceleration on Rock in the Contiguous United States, U. S. Geological Survey Open-File Report, No. 76-416.
Behle, W.H. and M.L. Perry, 1975. Utah Birds, Utah Museum of Natural History, University of Utah, Salt Lake City.
Benson, C.H. W.H. Albright, D.O. Fratta, J.M. Tinjum, E. Kucukkirca, S.H. Lee, J. Scalia, P.D. Schlicht, and X. Wang, 2011. Engineered Covers for Waste Containment: Changes in Engineering
Properties and Implications for Long-Term Performance Assessment (in 4 volumes). NUREG/CR-7028, Prepared for the U.S. Nuclear Regulatory Commission, Washington, D.C., December.
Brill, K. G. and O.W. Nuttli, 1983. Seismicity of the Colorado Lineament, Geology, v. 11, pp. 20-24.
Case, J. E. and H.R. Joesting, 1972. Regional Geophysical Investigations in the Central Plateau, U. S. Geological Survey Professional Paper 736.
Casjens, L.A., 1980. Archeological Excavations on White Mesa, San Juan County, Utah, 1979; edited and compiled by L.A. Casjens, with sections by M.P. Benson, L.A. Casjens, A.S. Nielson and M. Madsen, Antiquities Section, Division of State History, State of Utah, for Energy Fuels Nuclear, Inc. Volumes I through IV. June.
Cater, F.W., 1970. Geology of the Salt Anticline Region in Southwestern Colorado, U.S. Geological Survey, Professional Paper 637.
Chen and Associates, Inc., 1987. Physical Soil Data, White Mesa Project, Blanding Utah, Report prepared for Energy Fuels Nuclear, Inc.
Cline, J.F., F.G. Burton, D.A. Cataldo, W.E. Shiens, and K.A. Gano, 1982. Long-term biobarriers to plant and animal intrusions of uranium mill tailings. Rep. PNL-4340. Pacific Northwest Lab. Richland, WA.
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Cook, K.L. and R.B. Smith, 1967. Seismicity in Utah, 1850 Through June 1965, Bull. Seism. Soc. Am., v. 57, pp. 689-718.
Craig, L.C., C.N. Holmes, R.A. Cadigan, V.L. Freeman, T.E. Mullens, and G.W. Weir, 1955. Stratigraphy of the Morrison and Related Formations, Colorado Plateau Region, a Preliminary Report, U. S. Geological Survey Bulletin 1009-E, pp. 125-168.
Dames and Moore, 1978a. Site Selection and Design Study - Tailing Retention and Mill Facilities, White Mesa Uranium Project, January 17.
D’Appolonia Consulting Engineers, Inc., 1982. Letter Report, Section 16 Clay Material Test Data, White Mesa Uranium Project, Blanding, Utah, Report prepared for Energy Fuels Nuclear, Inc. on March 8.
Dames and Moore, 1978b. Environmental Report, White Mesa Uranium Project, San Juan County, Utah,
January 20, 1978, revised May 15.
Denison Mines (USA) Corp. Semi-Annual Effluent Reports (January through June, 2008), (June through December, 2008) and (January through June, 2009), for the White Mesa Mill.
Denison Mines (USA) Corp, 2007. White Mesa Uranium Mill License Renewal Application State of Utah Radioactive Materials License No. UT1900479. February 28.
Denison Mines (USA) Corp, 2007. White Mesa Uranium Mill Environmental Report In Support of the License Renewal Application State of Utah Radioactive Materials License No. UT1900479. February 28.
Denison Mines USA Corp. (Denison), 2009. Reclamation Plan, White Mesa Mill, Blanding Utah, Revision 4.0, November.
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ATTACHMENT A
TECHNICAL SPECIFICATIONS FOR
RECLAMATION OF WHITE MESA MILL FACILITY
BLANDING, UTAH
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TABLE OF CONTENTS

1.0 SPECIAL PROVISIONS .................................................................................................. 1
1.1 Scope of Document .......................................................................................................... 1
1.2 Definitions and Roles ....................................................................................................... 1
1.3 Scope of Work .................................................................................................................. 4
1.4 Applicable Regulations and Standards ............................................................................. 5
1.5 Permits .............................................................................................................................. 5 1.6 Inspection and Quality Assurance .................................................................................... 6
1.7 Construction Documentation ........................................................................................... 7
1.8 Design Modifications ....................................................................................................... 8
1.9 Environmental Requirements ........................................................................................... 8
1.10 Water Management .......................................................................................................... 8 1.11 Historical and Archeological Considerations ................................................................... 9
1.12 Health and Safety Requirements ...................................................................................... 9
1.13 Personnel Monitoring ....................................................................................................... 9
1.14 Environmental Monitoring ............................................................................................. 10
2.0 SITE CONDITIONS ........................................................................................................ 11
2.1 Site Location .................................................................................................................. 11
2.2 Climate and Geology ...................................................................................................... 11
2.3 Past Operations ............................................................................................................... 11
2.4 Facilities Demolition ...................................................................................................... 12
2.5 Disposed Materials ......................................................................................................... 12 2.6 Construction Materials ................................................................................................... 12
2.6.1 Liner Materials ........................................................................................................ 13
2.6.2 Random Fill ............................................................................................................ 13
2.6.3 Topsoil .................................................................................................................... 13
2.6.4 Topsoil-Gravel Admixture ...................................................................................... 13 2.6.5 Riprap ...................................................................................................................... 13
2.6.6 Filter Materials ........................................................................................................ 13
2.6.7 Granular Materials .................................................................................................. 14
2.7 Staging and Stockpile Areas .......................................................................................... 14
2.8 Access and Security ....................................................................................................... 14 2.9 Utilities ........................................................................................................................... 14
2.10 Sanitation Facilities ........................................................................................................ 14
3.0 WORK AREA PREPARATION .................................................................................... 15
3.1 General ........................................................................................................................... 15
3.2 Water Management ........................................................................................................ 15 3.3 Cell Construction............................................................................................................ 15
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3.4 Soil Borrow Areas .......................................................................................................... 16
3.5 Clearing and Stripping ................................................................................................... 16
3.5.1 Clearing ................................................................................................................... 16
3.5.2 Stripping .................................................................................................................. 17
4.0 CELL 1 DISPOSAL AREA BASE CONSTRUCTION ............................................... 18
4.1 General ........................................................................................................................... 18
4.2 Materials Description ..................................................................................................... 18
4.2.1 Subgrade Fill ........................................................................................................... 18
4.2.2 Clay Liner Material ................................................................................................. 18 4.3 Work Description ........................................................................................................... 18
4.3.1 Foundation Preparation ........................................................................................... 18
4.3.2 Disposal Cell Foundation Area ............................................................................... 19
4.3.3 Subgrade Fill Placement ......................................................................................... 19
4.3.4 Clay Liner Material Placement ............................................................................... 19 4.4 Performance Standards and Testing ............................................................................... 20
4.4.1 Subgrade Testing .................................................................................................... 20
4.4.2 Clay Liner Testing .................................................................................................. 21
4.4.3 Grading Tolerances ................................................................................................. 22
5.0 DISCHARGE CHANNEL GRADING .......................................................................... 23
5.1 General ........................................................................................................................... 23
5.2 Work Description ........................................................................................................... 23
5.2.1 Discharge Channel Excavation ............................................................................... 23
5.2.2 Grading Tolerances ................................................................................................. 23
6.0 MILL DECOMMISSIONING ........................................................................................ 24
6.1 Mill Buildings and Equipment ....................................................................................... 24
6.2 Mill Site and Windblown Contamination ...................................................................... 26
6.3 Scoping and Characterization Surveys ........................................................................... 27
6.3.1 Scoping and Characterization Survey for the Subsurface....................................... 28
6.3.2 Gamma Radiation to Unity Rule Correlation ......................................................... 28 6.3.3 Area Classification .................................................................................................. 34
6.3.4 Remediation ............................................................................................................ 35
6.4 Final Status Surveys ....................................................................................................... 35
6.4.1 Release Criterion ..................................................................................................... 35
6.4.2 Statistical Test ......................................................................................................... 36 6.5 Instrument Quality Assurance/Quality Control (QA/QC) ............................................. 37
6.5.1 Calibration............................................................................................................... 37
6.5.2 Source and Background Checks ............................................................................. 38
6.6 Data Quality Objectives ................................................................................................. 39
6.6.1 State the Problem .................................................................................................... 40 6.6.2 Identify the Decisions ............................................................................................. 40
6.6.3 Identify Inputs to the Decision ................................................................................ 40
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6.6.4 Define the Study Boundaries .................................................................................. 46
6.6.5 Develop the Decision Rules/Analytical Approach ................................................. 47
6.6.6 Define Acceptable Decision Errors ........................................................................ 47
6.6.7 Relative Shift and Number of Samples ................................................................... 49 6.6.8 Optimize the Design ............................................................................................... 50
6.7 Soil Sampling ................................................................................................................. 50
6.7.1 Laboratory Approval ............................................................................................... 50
6.7.2 Data Validation ....................................................................................................... 51
6.8 Employee Health and Safety .......................................................................................... 52 6.9 Environment Monitoring ................................................................................................ 52
6.10 Quality Assurance .......................................................................................................... 53
7.0 MATERIAL DISPOSAL ................................................................................................ 54
7.1 General ........................................................................................................................... 54
7.2 Materials Description ..................................................................................................... 54 7.2.1 Raffinate Crystals.................................................................................................... 54
7.2.2 Synthetic Liner ........................................................................................................ 54
7.2.3 Contaminated Soils ................................................................................................. 54
7.2.4 Mill Debris .............................................................................................................. 54
7.3 Work Description ........................................................................................................... 55 7.3.1 Raffinate Crystals.................................................................................................... 55
7.3.2 Synthetic Liner ........................................................................................................ 55
7.3.3 Contaminated Soils ................................................................................................. 55
7.3.4 Mill Debris .............................................................................................................. 56
7.3.5 Material Sizing and Preparation.............................................................................. 56 7.3.6 Incompressible Debris ............................................................................................ 56
7.3.7 Compressible Debris ............................................................................................... 57
7.3.8 Organic Debris ........................................................................................................ 58
7.3.9 Soils and Similar Materials ..................................................................................... 58
7.4 Performance Standards and Testing ............................................................................... 58 7.4.1 Material Compaction – Debris Lifts ....................................................................... 58
7.4.2 Material Compaction – Final Disposed Material Surface....................................... 59
7.4.3 Testing Frequency ................................................................................................... 59
7.4.4 Final Slope and Grades ........................................................................................... 59
8.0 COVER CONSTRUCTION ........................................................................................... 60
8.1 General ........................................................................................................................... 60
8.2 Materials Description ..................................................................................................... 60
8.2.1 Random Fill ............................................................................................................ 60
8.2.2 Organic Matter Amendment ................................................................................... 60
8.2.3 Topsoil-Gravel Admixture ...................................................................................... 60 8.2.4 Riprap ...................................................................................................................... 61
8.2.5 Filter Material ......................................................................................................... 62
8.2.6 Topsoil .................................................................................................................... 62
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8.3 Work Description ........................................................................................................... 62
8.3.1 Monitoring Interim Cover Settlement ..................................................................... 63
8.3.2 Monitoring Final Cover Settlement ........................................................................ 63
8.3.3 Monitoring Settlement Points ................................................................................. 63 8.3.4 Interim Fill Layer .................................................................................................... 64
8.3.5 Compacted Cover Layer ......................................................................................... 64
8.3.6 Growth Medium Layer ........................................................................................... 64
8.3.7 Organic Matter Amendment ................................................................................... 64
8.3.8 Erosion Protection Layer: Topsoil-Gravel Admixture ........................................... 64 8.3.9 Erosion Protection Layer: Topsoil .......................................................................... 65
8.3.10 Riprap and Filter Material Placement ..................................................................... 65
8.4 Performance Standard and Testing ................................................................................ 66
8.4.1 Compacted Cover Layer Testing ............................................................................ 66
8.4.2 Growth Medium Layer Testing .............................................................................. 67 8.4.3 Topsoil-Gravel Admixture Testing ......................................................................... 68
8.4.4 Riprap Testing ......................................................................................................... 68
8.4.5 Filter Material Testing ............................................................................................ 68
8.4.6 Rock Durability Testing .......................................................................................... 69
8.5 Surface Slopes and Grades ............................................................................................. 69 8.6 Grading Tolerances ........................................................................................................ 69
9.0 REVEGETATION ........................................................................................................... 71
9.1 General ........................................................................................................................... 71
9.2 Materials Description ..................................................................................................... 71
9.2.1 Soil Amendments .................................................................................................... 71 9.2.2 Seed Mix ................................................................................................................. 71
9.2.3 Erosion Control Materials ....................................................................................... 72
9.3 Work Description ........................................................................................................... 73
9.4 Soil Amendment Application ......................................................................................... 73
9.5 Growth Zone Preparation ............................................................................................... 73 9.6 Seed Application ............................................................................................................ 73
9.7 Erosion Control Material Application ............................................................................ 74
9.8 Performance Standard and Testing ................................................................................ 75
9.8.1 Seeding Rates .......................................................................................................... 75
9.8.2 Erosion Control ....................................................................................................... 75 9.8.3 Weed Control .......................................................................................................... 75
9.8.4 Vegetation Establishment Performance .................................................................. 79
10.0 REFERENCES ................................................................................................................. 82
1.0 INTRODUCTION.............................................................................................................. 2
2.0 QC CONTROL CHARTING ........................................................................................... 2
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1.0 SPECIAL PROVISIONS
1.1 Scope of Document
The following technical specifications have been prepared for reclamation and decommissioning
of the Energy Fuels Resources (USA) Inc. (”EFRI”), White Mesa Uranium Mill Facility (“Mill”)
in Blanding, Utah. These technical specifications have been prepared for review and approval by
the Utah Department of Environment Quality (“DEQ”), Division of Waste Management and
Radiation Control (“DWMRC”) and are submitted as an attachment to the Reclamation Plan.
The design drawings for reclamation are attached and are designated as the “Drawings”. The
Construction Quality Assurance/Quality Control Plan (“CQA/QC Plan”) referenced in this
document is provided as Attachment B to the Reclamation Plan. The Technical Specifications
have been written assuming tailings management Cells 2, 3, 4A, and 4B will receive tailings to
the maximum permitted tailings elevations. Cell 2 is full and partially reclaimed. Cell 3 was
used for tailings storage, but is currently only receiving mill waste. Cell 3 is partially full and
partially reclaimed. Cell 4A is the only cell currently receiving tailings and is partially full. Cell
4B is used for evaporation of process solutions and has not been used for storage of tailings. The
Technical Specifications have been written assuming Cell 4B will be used in the future for
tailings storage.
These technical specifications have been written assuming (a) a contractor will conduct tailings
impoundment reclamation under contract with EFRI and under EFRI’s direction (b) the work
quality will be checked with independent (third-party) construction quality assurance, and (c) the
tailings management system comprised of Cells 2, 3, 4A, and 4B will receive tailings to the
maximum permitted tailings elevations.
1.2 Definitions and Roles
Construction Quality Assurance (CQA) – A planned and systematic pattern of means and
actions designed to assure adequate confidence that the materials or services meet contractual
and regulatory requirements and will perform satisfactorily in service. CQA refers to means and
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actions employed by the involved parties to assure conformity of the project work with the
CQA/QC Plan, the Drawings, and the Technical Specifications.
Construction Quality Control (CQC) – Actions which provide a means to measure and
regulate the characteristics of an item or service in relation to contractual and regulatory
requirements. CQC refers to those actions taken by the Contractor, technicians, or other
involved parties to verify that the materials and the workmanship meet the requirements of the
CQA/QC Plan, the Drawings, and the Technical Specifications.
Technical Specifications – The document that prescribes the requirements and standards for the
specific elements of the reclamation. The Technical Specifications will be prepared in final form
prior to commencement of reclamation activities.
Drawings – The detailed project drawings to be used in conjunction with the Technical
Specifications. The Drawings will be prepared in final form as construction drawings prior to
reclamation.
Construction Project – The total authorized/approved reclamation project that requires several
construction segments to complete.
Construction Segment – A portion of the total construction project involving a specific area or
type of work. Several construction segments will likely take place simultaneously during
reclamation.
Construction Task – A basic construction feature of a construction segment involving a specific
construction activity.
ASTM Standards – The latest versions of the American Society for Testing and Materials
specifications, procedures and methods.
For the Technical Specifications, EFRI is referred to as the Owner, with overall responsibility
for closure, as well as site reclamation.
The on-site Construction Manager is responsible for the conduct, direction and supervision of
all reclamation activities as detailed in the Drawings and Technical Specifications.
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The Design Engineer is responsible for the design of the various elements of the reclamation
project and for preparing the Drawings and Technical Specifications.
The Contractor is defined as the group (or groups) selected by the Owner and responsible for
conducting the work tasks outlined in Section 1.3 under the direction of, and under contract with
the Owner.
The Surveyor is a party, independent from the Owner or Contractor, who is responsible for
surveying, documenting, and verifying the location of all significant components of the work.
The CQA/QC Consultant is a party, independent from the Owner or Contractor, who is
responsible for observing, testing, and documenting the various activities comprising the
Reclamation Project in accordance with the CQA/QC Plan, the Technical Specifications and the
Drawings.
The CQA Officer will be responsible for overall implementation and management of the
CQA/QC Plan for the reclamation project.
The CQA Site Manager will be appointed by the CQA Consultant to provide day-to-day, on-
site oversight of the CQA/CQC activities. The CQA Site Manager could be an employee of the
Owner or a third-party consultant.
The CQA Consultant will utilize various QC Technicians to assist the on-site CQA Site
Manager to perform specific tasks throughout the project to verify the adequacy of construction
materials and procedures.
The Document Control Officer will be appointed by the Construction Manager to assist with
managing the various documents that will be produced throughout the project.
The CQA Laboratory is a party, independent from the Owner and Contractor, responsible for
conducting tests of soils and other project materials in accordance with ASTM and other
applicable standards in either an on-site or off-site laboratory.
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The DWMRC Project Manager will represent the DWMRC's interests in the reclamation
project.
The CQA/QC Plan (Attachment B of the Reclamation Plan) contains more detailed descriptions
of the project roles.
1.3 Scope of Work
The work outlined in these Technical Specifications consists of execution of the following tasks
associated with reclamation of the tailings management system and associated site reclamation.
• Preparation of borrow areas for material excavation by removal of vegetation; and
stripping, salvaging, and stockpiling of topsoil;
• Preparation of material staging and stockpile areas by removal of vegetation; stripping, salvaging, and stockpiling of topsoil; and providing for storm water diversion and
internal water collection;
• Removal of raffinates and PVC liner materials from Cell 1 and placement within the last active tailings cell;
• Construction of a clay-lined disposal cell (Cell 1 Disposal Area) along the Cell 1
containment dike for disposal of mill demolition debris and contaminated soils;
• Construction of a sedimentation basin in the location of Cell 1 (does not include the Cell 1 Disposal Area);
• Excavation of process area structure foundations, paved areas, concrete pads and
roadways, and placement of these materials in the disposal cell;
• Excavation of contaminated subsoils from the process area, and placement in the last active tailings cell or the Cell 1 Disposal Area.
• Construction of the cover system over the tailings cells, with placement of topsoil and/or
topsoil-gravel admixture over the disposal cell cover surface.
• Regrading and placement of topsoil over excavated areas, stockpile and staging areas, and other disturbed areas of the site.
• Establishment of vegetation on the disposal cell surface and surrounding reclaimed areas
on site.
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The Technical Specifications have been written assuming tailings management Cells 2, 3, 4A,
and 4B will receive tailings to the maximum permitted tailings elevations. Cell 2 is full and
partially reclaimed. Cell 3 was used for tailings storage, but is currently only receiving mill
waste. Cell 3 is partially full and partially reclaimed. Cell 4A is the only cell currently receiving
tailings and is partially full. Cell 4B is used for evaporation of process solutions and has not
been used for storage of tailings. The Technical Specifications have been written assuming Cell
4B will be used in the future for tailings storage.
Work not included in these Technical Specifications consists of salvage of facility equipment,
demolition of facility structures, groundwater monitoring and remediation, and post-reclamation
performance monitoring.
1.4 Applicable Regulations and Standards
The work will be conducted to conform with applicable Federal, State, and County
environmental and safety regulations, as well as applicable conditions in the Owner’s radioactive
materials license. Geotechnical testing procedures will follow applicable ASTM standards, as
documented in the most current edition of standards in force at the start of work. Personnel
safety procedures and monitoring will be conducted in accordance with the Owner’s Radiation
Protection Manual for Reclamation Activities and as directed by the Radiation Safety Officer
(“RSO”).
1.5 Permits
The work will be conducted under the Owner’s existing radioactive materials license and State of
Utah Air Quality Approval Order (DAQE-AN0112050018-11, issue date March 3, 2011). The
Contractor will be responsible for applying for, and obtaining (permit fees included), all other
necessary permits required to complete the work outlined in these Technical Specifications.
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1.6 Inspection and Quality Assurance
In general, the QA/QC Plan details the Owner’s organizational structure and responsibilities,
qualifications of personnel, operating procedures and instructions, record keeping and document
control, and quality control in the sampling procedure and outside laboratory. The Plan will
adopt the existing quality assurance/quality control procedures utilized in compliance with the
existing license.
The RSO (and approved assistants as needed) will conduct on-site training, and full-time
personnel monitoring, and inspection of construction activities while the site reclamation work is
in progress. The RSO (and assistants) will be independent representatives of and appointed by
the Owner. The responsibilities and duties of the RSO shall be as outlined in the Owner’s
Protection Manual for Reclamation.
The CQA Site Manager (and approved assistants as needed) will provide on-site inspection of all
construction activities and quality assurance testing outlined in these Technical Specifications
and the CQA/QC Plan while the construction work is in progress. The CQA Site Manager and
assistants will be independent representatives of and appointed by the Owner. The inspection and
CQA testing conducted by the CQA Site Manager will be under the supervision of the
Reclamation Project Manager. Inspection and CQA testing will include the tasks described in the
CQA/QC Plan and listed below.
a. Observation of construction practices and procedures for conformance with the
Technical Specifications.
b. Testing material characteristics to ensure that earthen materials used in the
construction conform to the requirements in the Technical Specifications.
c. Documentation of construction activities, test locations, samples, and test results.
d. Notification of results from quality assurance testing to the Owner and the Contractor.
e. Documentation of field design modifications or approved construction work that
deviates from the Technical Specifications.
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The CQA Site Manager will record the documentation outlined above on a daily basis. The
Reclamation Project Manager will approve deviations from the Technical Specifications (if
necessary), with notification to the Owner and DWMRC or other appropriate Utah state
regulatory agency personnel. Quality control procedures have been developed for reclamation
and presented in Attachment B of this Reclamation Plan. Procedures will be used for testing,
sampling, and inspection functions.
1.7 Construction Documentation
During construction, the CQA Site Manager will record documentation of construction
inspection work on a daily basis. Documentation will include the following items.
a. Work performed by the Contractor.
b. CQA testing and surveying work conducted.
c. Discussions with the Owner and the Contractor.
d. Key decisions, important communications, or design modifications.
e. General comments including: weather conditions, work area surface conditions, and
visitors to the site.
All earthwork test results will be documented on a daily basis, with a copy of the results given to
the CQA Site Manager by the end of the following working day after the testing.
The CQA Site Manager or his representative will take photographs of key construction activities
and critical items for documentation.
A final construction completion report, documenting the as-built conditions of the tailings
impoundment reclamation components will be submitted to DWMRC at the end of construction.
This report will include the following items.
a. All design modifications or changes to the Technical Specifications that were made during construction.
b. An as-built layout of the facility prior to, and at the completion of reclamation
construction.
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c. An as-built layout of other reclaimed areas of the site.
d. Documentation of soil cleanup verification work (soil radiation survey and soil sampling
and analyses) in areas of contaminated soil excavation.
e. Documentation of the revegetation work (soil amendments, seed mix, and vegetation establishment).
1.8 Design Modifications
Design modifications (due to unanticipated site conditions or field improvements to the design)
will be made following the protocol outlined below.
a. Communication of modification with the Reclamation Project Manager.
b. Submittal to, and review by, DWMRC for approval prior to implementation.
c. Documentation of modification(s) in the construction completion report.
1.9 Environmental Requirements
The Contractor shall store materials, confine equipment, and maintain construction operations
according to applicable laws, ordinances, or permits for the project site. Fuel, lubricating oils,
and chemicals shall be stored and dispensed in such a manner as to prevent or contain spills and
prevent said liquids from reaching local streams or groundwater. If quantities of fuel, lubricating
oils or chemicals exceed the threshold quantities specified in Utah regulations, the Contractor
shall prepare and follow a Spill Prevention Control and Countermeasures Plan (SPCCP), as
prescribed in applicable Utah regulations. The Owner will approve said plan. Used lubricating
oils shall be disposed of or recycled at an appropriate facility. The Contractor shall be
responsible for disposal of all waste associated with the project work.
1.10 Water Management
The Contractor shall construct and maintain all temporary diversion and protective works
required to divert storm water from around work areas. The Contractor shall furnish, install,
maintain, and operate all equipment required to keep excavations and other work areas free from
water in order to construct the facilities as specified.
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Water required by the Contractor for dust suppression or soil-moisture conditioning will be
obtained from the Owner.
1.11 Historical and Archeological Considerations
The Contractor shall immediately notify the Owner if materials of potential historical or
archeological significance are discovered or uncovered. The Owner may stop work in a specific
area until the materials can be evaluated for historical, cultural, or archeological significance.
All materials determined to be of significance will be protected during the work, as determined
by appropriate regulatory agencies, including removal or adjustment of work areas.
1.12 Health and Safety Requirements
Work outlined in these Technical Specifications will be conducted under the Owner’s Radiation
Protection Manual for Reclamation Activities, as directed by the RSO.
The Contractor shall suspend construction or demolition operations or implement necessary
precautions whenever (in the opinion of the Reclamation Project Manager or RSO)
unsatisfactory conditions exist due to rain, snow, wind, cold temperatures, excessive water, or
unacceptable traction or bearing capacity conditions. The CQA Site Manager, Reclamation
Project Manager, and RSO each have the authority to stop Contractor work if unsafe conditions
or deviations from Technical Specifications are observed.
1.13 Personnel Monitoring
Programs currently in place for monitoring of exposures to employees will remain in effect
throughout the time period during which tailings cell reclamation, mill decommissioning and
clean up of windblown contamination are conducted. These programs will include personnel
monitoring and the ongoing bioassay program. Access control will be maintained at the
Restricted Area boundary to ensure employees and equipment are released from the site in
accordance with the current License conditions. In general, no changes to the existing programs
are expected and reclamation activities are not expected to increase exposure potential beyond
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the current levels. The Owner will assign an employee to act as RSO responsible for assuring
site workers comply with the Owner’s Radiation Protection Manual for Reclamation Activities
and the requirements set forth in the Owner’s radioactive materials license.
1.14 Environmental Monitoring
Existing environmental monitoring programs will continue during the time period in which
reclamation and decommissioning is conducted as applicable. This includes monitoring of
surface and groundwater, airborne particulates, radon, soils and vegetation, according to the
existing License conditions as applicable. As site features are reclaimed, monitoring programs
for those features may cease. Any changes will be approved by DWMRC prior to the cessation
of monitoring. In general, no changes to the extent of the existing programs are expected because
reclamation activities are not expected to increase exposure potential beyond the current levels.
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2.0 SITE CONDITIONS
2.1 Site Location
The White Mesa Mill site is located about 6 miles south of Blanding, Utah in San Juan County,
along County Road 191.
2.2 Climate and Geology
The climate of southeastern Utah is classified as dry to arid continental. Although varying
somewhat with elevation and terrain, the climate in the vicinity of the Mill can be considered as
semi-arid with normal annual precipitation of about 13.3 inches. The mean annual relative
humidity is about 44 percent and is normally highest in January and lowest in July. The average
annual Class A pan evaporation rate is 68 inches (NOAA, 1977), with the largest evaporation
rate typically occurring in July. (Denison, 2009)
The Mill is located within the Blanding Basin of the Colorado Plateau physiographic province.
The average elevation of the site is approximately 5,600 ft (1,707 m) above mean sea level
(amsl). Typical of large portions of the Colorado Plateau province, the rocks underlying the site
are relatively undeformed. The site is underlain by unconsolidated alluvium and indurated
sedimentary rocks consisting primarily of sandstone and shale. The alluvial materials consist
mostly of aeolian silts and fine-grained aeolian sands with a thickness varying from a few feet to
as much as 25 to 30 ft (7.6 to 9.1 m) across the site. The alluvium is underlain by the Dakota
Sandstone and Burro Canyon Formation, which are sandstones having total thicknesses ranging
from approximately 100 to 140 ft (31 to 43 m). (Denison, 2009)
2.3 Past Operations
The mill is a uranium/vanadium mill that was developed in the late 1970's by Energy Fuels
Nuclear, Inc. (“EFN”) as an outlet for the many small mines located in the Colorado Plateau and
for the possibility of milling Arizona strip ores. Construction on the tailings area began on
August 1, 1978. The Mill was operated by EFN from the initial start-up date of May 6, 1980
until the cessation of operations in 1983 and then intermittently under different ownership
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through present-day. Denison (then named International Uranium (USA) Corporation), and its
affiliates, purchased the assets of EFN in May 1997. Energy Fuels Resources (USA), Inc.
purchased the facility in 2012 and is the current owner.
2.4 Facilities Demolition
Demolition of equipment, structures, and associated facilities at the Mill site will be conducted
according to applicable conditions of the radioactive materials license, the demolition plan for
the facility, and the Owner’s Radiation Protection Manual for Reclamation Activities. Facilities
demolition is not included in this document.
2.5 Disposed Materials
Materials to be placed in the disposal and tailings cells consists of process waste materials,
structural debris, underlying liner materials, and subsoils from planned site cleanup activities.
Additional detail on each material type is outlined later in the Technical Specifications. The four
major types of materials are outlined below:
• Raffinate Crystals – located in Cell 1
• Synthetic Liner – PVC liner from Cell 1
• Contaminated Soils - soils located in and around the Mill site with concentrations
exceeding prescribed unity rule concentrations (see Section 6)
• Mill Debris – all equipment and structures from the demolition of the mill
2.6 Construction Materials
Construction materials for the disposal cell liner, cover system, and for erosion protection of the
cover and discharge channel will include soils and aggregates from on-site and off-site sources.
These materials are outlined below.
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2.6.1 Liner Materials
The disposal cell will be constructed, prior to the placement of contaminated soils and mill
demolition debris, with a compacted clay liner. The soils will be obtained from suitable materials
stockpiled on site during cell construction.
2.6.2 Random Fill
Random fill will be used within the disposal cell and tailings cells, placed on and around mill
material and debris and placed for the components of the cover system. Fill materials will be
obtained from soils stockpiled on site.
2.6.3 Topsoil
Topsoil for the surface of the disposal cell and surrounding areas to be revegetated will be
obtained from on-site stockpile areas.
2.6.4 Topsoil-Gravel Admixture
A mixture of gravel and topsoil will be used in select areas on the cover. The sources of rock are
nearby commercial sources of alluvial gravel. Topsoil-gravel admixture shall meet the particle-
size distribution requirements outlined in Section 8.
2.6.5 Riprap
A layer of riprap will be placed on the side slopes and on the perimeter apron of the disposal cell
as well as within the discharge channel. The sources of riprap are nearby commercial sources of
alluvial gravel and cobbles. Riprap shall meet the particle-size distribution and durability
requirements outlined in Section 8, and shall meet requirements for rock durability outlined in
NRC (1990) and Johnson (1999, 2002).
2.6.6 Filter Materials
Filter layer materials will be obtained from an off-site local commercial source or from select on-
site borrow areas.
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2.6.7 Granular Materials
Granular materials will be used for filter material and may also be used for subsurface fill for the
cell base. These materials will be obtained from off-site commercial sources of alluvial sand and
gravel.
2.7 Staging and Stockpile Areas
Areas on site identified as staging areas or stockpile locations will be approved by the Owner.
These areas will be constructed and used in a manner consistent with the Owner’s plans for
storm water management. The Contractor shall maintain proper erosion control measures for
stockpiles and may be required to cover piles in situations where precipitation is anticipated.
2.8 Access and Security
Access to the site will be controlled at gated entrances in the existing restricted area fencing. All
gated entrances and security for the Mill property will be maintained by the Owner.
2.9 Utilities
Utilities on site will be maintained by the Owner outside of work areas (areas to be demolished
or reclaimed). Utilities inside of work areas will be provided and maintained by the Contractor.
2.10 Sanitation Facilities
The Contractor, in accordance with the Owner’s Radiation Protection Manual for Reclamation
Activities, will maintain sanitation facilities required during construction.

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3.0 WORK AREA PREPARATION
3.1 General
This section describes the preparation of site areas for reclamation. This work will be conducted
according to applicable sections of the Owner’s Radiation Protection Manual for Reclamation
Activities.
3.2 Water Management
Preparation for work in the site area will include water management tasks outlined below.
a. Removal of raffinate crystals from Cell 1.
Breaching of the Cell 1 dike for constructing the cell as a sedimentation basin. Re-routing runoff
from the mill area and areas immediately north of the cell into the sedimentation basin for
discharge onto the natural ground via the channel to be located at the southwest corner of the
basin.
Diversion of clean area storm water runoff from work areas (where facilities demolition and
material excavation will take place) and from the disposal cell footprint area.
Collection of storm water runoff from within the work areas and the disposal cell footprint for
treatment and permitted discharge, or for disposed material compaction or dust control. The
planned storage location for this affected storm water is the sedimentation pond.
Isolation of water used for processing operations associated with reclamation from storm water
runoff. Water from processing operations or other contaminated water will not be used for
disposal cell construction.
3.3 Cell Construction
A clay-lined disposal area will be constructed within Cell 1 (Cell 1 Disposal Area) for permanent
disposal of contaminated material and debris from Mill site decommissioning. The disposal area
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will be located immediately north of the existing dike between Cells 1 and 2. The disposal
footprint area will be lined with a compacted clay liner prior to placement of contaminated
materials and installation of the final reclamation cover. If there is not sufficient debris, rubble
and contaminated soil to fill the Cell 1 Disposal Area as designed, the footprint of the Cell 1
Disposal Area can be reduced to decrease the horizontal dimension extending out from Cell 2
and the lateral extent of the disposed materials, to be closer to the base of the Cell 2 dike. If a
design modification is required for the Cell 1 Disposal Area, it will be submitted to DWMRC for
review and approval, and these Technical Specifications will be revised accordingly.
3.4 Soil Borrow Areas
Fill cover and liner materials for the disposal cell will be excavated from suitable materials
stockpiled in identified borrow areas on site. Specific soil borrow areas will be selected based on
haul distance to the disposal cell, ease of excavation of cover material, geotechnical
characteristics, uniformity of the borrow material, and acceptable radiological and geochemical
characteristics.
Borrow area preparation will consist of setup for storm water management (Section 3.2) and
clearing and stripping (Section 3.5).
3.5 Clearing and Stripping
In work areas with vegetation, preparation work will include tasks outlined below.
3.5.1 Clearing
Clearing of vegetation and grubbing of roots will be in identified work areas. Clearing and
grubbing shall not extend beyond 20 feet from the edge of the work area, unless as shown on the
Drawings or as approved by the Reclamation Project Manager.
Vegetation from clearing and grubbing may be shredded or chipped to form mulch. Alternative
methods of on-site or off-site disposal or burning of stripped vegetation shall be conducted only
as approved by the Reclamation Project Manager.
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3.5.2 Stripping
Stripping of salvageable topsoil (if present) shall be done within the entire work area. Stripping
of topsoil shall not extend beyond 10 feet from the edge of the work area, unless approved by the
Reclamation Project Manager. The depth of stripping of reclamation soil shall be based on the
presence of suitable topsoil and approved by the Reclamation Project Manager. Water shall be
applied to the areas of excavation and soil salvage to minimize dust generation.
Topsoil shall be stockpiled in approved areas. The final stockpile surface shall be graded and
smoothed to minimize erosion and facilitate interim revegetation of the stockpile surfaces.
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4.0 CELL 1 DISPOSAL AREA BASE CONSTRUCTION
4.1 General
This section outlines work associated with construction of the disposal cell base (Cell 1 Disposal
Area) for receipt of materials (as described in Section 7.0) within Cell 1. The cell baseCell 1
Disposal Area will be constructed as shown on the Drawings and outlined in these Technical
Specifications.
4.2 Materials Description
4.2.1 Subgrade Fill
The disposal cell footprint is likely to have an irregular surface from contaminated material
excavation. Low areas of the excavated surface shall be filled with subgrade fill to form a
smooth, competent foundation for clay liner construction (shown on the Drawings).
Subgrade fill will consist of off-site granular materials, or soils and weathered sedimentary rock
from approved on-site excavation areas. Subgrade fill shall have a maximum size of 6 inches
and shall be free from roots, branches, rubbish, and process area debris.
4.2.2 Clay Liner Material
Clay liner material shall have a maximum particle size of one inch, and shall be free from roots,
branches, rubbish, and process area debris. Clay liner material shall have a minimum of 40
percent passing the No. 200 sieve and a minimum plasticity index (PI) of 15 percent.
4.3 Work Description
4.3.1 Foundation Preparation
The footprint of the disposal cell shall form a competent foundation for clay liner and cover
construction. The surface of the disposal cell footprint shall be filled with subgrade fill (where
required) in low areas to form a smooth, competent foundation for clay liner and cover
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construction. The final filled surface shall be compacted with approved construction equipment
to provide a foundation surface with uniform density for clay liner placement.
4.3.2 Disposal Cell Foundation Area
The footprint of the disposal cell is established along the north side of the dike between Cells 1
and 2 (shown on the Drawings).
4.3.3 Subgrade Fill Placement
Subgrade fill (Section 4.2.1) shall be placed in lifts with a maximum loose thickness of 12 inches
and compacted in excavated areas of the disposal cell footprint to meet desired grades and
elevations for the disposal cell foundation.
4.3.4 Clay Liner Material Placement
Clay liner material (Section 4.2.2) shall be placed in lifts with a maximum loose thickness of 6
inches to form a continuous layer with a total minimum compacted layer thickness of 12 inches.
Clay liner material shall be placed over the prepared subgrade surface of the disposal cell
(Section 4.3.1).
Compaction of the clay liner material shall be done with a sheepsfoot or tamping-foot roller of
sufficient weight to achieve the required compaction specifications. Compaction of the clay liner
material shall not be achieved solely through the use of rubber-tired equipment.
If the moisture content of any layer of clay liner is outside of the allowable placement moisture
content range specified (Section 4.4.2), the material shall be moistened and/or reworked with a
harrow, scarifier, or other suitable equipment to a sufficient depth to provide relatively uniform
moisture content and a satisfactory bonding surface before the next layer of clay material is
placed. If the compacted surface of any layer of clay liner material is too wet (due to
precipitation) for proper compaction of the fill material to be placed thereon, it shall be reworked
with a harrow, scarifier or other suitable equipment to dry out the layer and reduce the moisture
content to within the required limits, and re-compacted.
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Clay liner construction shall minimize lenses, pockets, streaks or layers of material differing
substantially in texture, gradation or moisture content from the surrounding material. Oversized
material will be controlled through observation of placement by a qualified individual with
authority to stop work and reject material being placed and by culling oversized material from
the fill.
No clay liner material will be placed when either the materials, or the underlying material, is
frozen or when ambient temperatures do not permit the placement or compaction of the materials
to the specified density without developing frost lenses in the fill.
Any holes in the clay liner material resulting from testing shall be repaired by hand by filling
with clay fill, or by filling with bentonite powder which is hydrated to fully seal the hole.
4.4 Performance Standards and Testing
Lifts of material with tested dry densities less than the specified values will be reworked by the
Contractor as necessary and re-compacted until the specified dry density is attained. Material
that is too dry or too wet to permit bonding of layers during compaction will be reworked by the
Contractor until the moisture content is within the specified limits.
4.4.1 Subgrade Testing
Subgrade fill shall be placed in lifts not exceeding 8 inches in loose thickness. Each lift shall be
compacted to a minimum of 90 percent of standard Proctor (ASTM D698) density and within 3
percent of the optimum moisture content for the material.
Where required, checking of compaction of compacted subgrade fill and the final subgrade
surface will consist of a minimum of one field density test per 1,000 cubic yards of material
compacted. A minimum of two tests will be taken for each day that more than 150 cubic yards
of material is placed. A minimum of one test per lift and at least one test for every full shift of
compaction operations will be taken.
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Field density tests will be compared with standard Proctor tests (ASTM D698 Method A or C).
Where required, standard Proctor or Maximum Index Density tests will be conducted at a
frequency of at least one test per 10,000 cubic yards of material compacted, or when material
characteristics show significant variation.
Field density testing will be conducted with the sand cone test (ASTM D1556) or a nuclear
density gauge (ASTM D6938, or as modified by the CQA Site Manager). Correlation of nuclear
density gauge results will be by comparison with results from sand cone test(s) and laboratory
testing for water content(s) using the oven drying method (ASTM D2216) on similar material.
4.4.2 Clay Liner Testing
Each lift of clay liner material shall be compacted to at least 95 percent of the maximum dry
density for the material, as determined by the standard Proctor test (ASTM D698). During
compaction, the material shall be within 2 percent of the optimum moisture content for the
material, as determined by the standard Proctor test. If water addition is required to achieve this
range of moisture contents, the added water shall be thoroughly mixed into the material prior to
compaction.
Material specifications for the clay liner material will be confirmed by gradation testing
conducted by approved personnel. Testing will consist of No. 200 sieve wash and maximum
particle size testing (ASTM D422), and Atterberg limits testing (ASTM D4318) on samples of
clay liner materials, at a frequency of at least one test per 2,000 cubic yards of fill placed, or
when material characteristics show a significant variation.
Compaction of the clay liner material will be checked with a minimum of one field density test
per 500 cubic yards of material compacted. A minimum of two tests will be taken for each day
that more than 150 cubic yards of material is placed. A minimum of one test per lift and at least
one test for every full shift of compaction operations will be taken.
Field density tests will be compared with standard Proctor tests (ASTM D698 Method A or C)
on the same material. Standard Proctor tests will be conducted at a frequency of at least one test
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per 5,000 cubic yards of material compacted, or when material characteristics show significant
variation.
Field density testing will be conducted with the sand cone test (ASTM D1556) or a nuclear
density gauge (ASTM D6938, or as modified by the CQA Site Manager). Correlation of nuclear
density gauge results will be by comparison with results from sand cone test(s) and laboratory
testing for water content(s) using the oven drying method (ASTM D2216) on similar material.
4.4.3 Grading Tolerances
The completed grading for the clay liner shall be within 1.0 foot (horizontally) of the lines as
designed, and within 0.1 foot (vertically) of the elevations as designed. The final surfaces shall
be smoothed to avoid abrupt changes in surface grade or areas of runoff concentration. The layer
thicknesses shall meet the required minimum thicknesses.
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5.0 DISCHARGE CHANNEL GRADING
5.1 General
This section outlines specifications for the work associated with excavating the discharge
channel from Cell 1. Portions of the grading for the sedimentation basin may be in soil, while
other areas may require rock excavation. Although the rock may be rippable, the Contractor
should prepare for non-rippable rock in some of the excavation areas.
5.2 Work Description
5.2.1 Discharge Channel Excavation
The discharge channel shall be excavated to the slopes and grades and channel widths shown on
the Drawings. Discharge channel excavation will include breaching of the dike on the west side
of Cell 1. Riprap will not be required to armor the discharge channel where the channel is
excavated into competent sedimentary rock, as verified in the field by the CQA Site Manager.
5.2.2 Grading Tolerances
Completed grading in soil for the sedimentation basin shall be within 1.0 foot (horizontally) of
the lines as designed, and within 0.1 foot (vertically) of the elevations as designed. Final surfaces
shall be smoothed to avoid abrupt changes in surface grade or areas of runoff concentration.
The completed grading in rock for the discharge channel and portions of the sedimentation basin
shall be within 2.0 foot (horizontally) of the lines as designed, and within 0.5 foot (vertically) of
the elevations as designed. The final excavated rock surfaces of the discharge channel will be
below design grades and shall not be filled to make grade.
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6.0 MILL DECOMMISSIONING
The following subsections describe decommissioning plans for the mill buildings and equipment,
the mill site, and associated windblown contamination.
6.1 Mill Buildings and Equipment
The uranium and vanadium processing areas of the Mill, including all equipment, structures and
support facilities, will be decommissioned by demolition and disposed of in tailings or buried on
site as appropriate. All equipment, including tankage and piping, agitation equipment, process
control instrumentation and switchgear, and contaminated structures will be cut up, removed and
buried in tailings prior to final cover placement. Concrete structures and foundations will be
broken up and removed. Concrete foundations may be left in place and covered with soil as
appropriate.
Decommissioned areas will include the following:
• Coarse ore bin and associated equipment, conveyors and structures
• Grind circuit including semi-autogeneous grind (SAG) mill, screens, pumps and cyclones
• Three pulp storage leach tanks to the east of the mill building, including all tankage,
agitation equipment, pumps and piping
• Seven leach tanks inside the main mill building, including all agitation equipment, pumps
and piping
• The counter-current decantation (CCD) circuit including all thickeners and equipment,
pumps and piping
• Uranium precipitation circuit, including all thickeners, pumps and piping
• Two yellow cake dryers and all mechanical and electrical support equipment, including
uranium packaging equipment
• Clarifiers to the west of the mill building including the preleach thickener (PLT),
clarifier, and claricone area
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• The boiler and all ancillary equipment and buildings
• The entire vanadium precipitation, drying and fusion circuit
• All external tankage not included in the previous list including reagent tanks for the
storage of acid, ammonia, kerosene, water, dry chemicals, etc. and the vanadium
oxidation circuit
• The ammonium sulfate pad
• The uranium and vanadium solvent extraction (SX) circuit including all SX and reagent
tankage, mixers and settlers, pumps and piping
• The SX building
• The mill building
• The alternate feed processing circuit
• The decontamination pads
• The office building
• The shop and warehouse building
• The sample plant building
• The reagent storage building
The sequence of demolition will proceed so as to allow the maximum use of support areas of the
facility such as the office and shop areas. It is anticipated that all major structures and large
equipment will be demolished using hydraulic shears. This equipment will expedite the process,
provide proper sizing of the materials for transport and placement, and reduce personnel
exposure to radiation and other safety hazards during the demolition. Uncontaminated or
decontaminated equipment to be considered for salvage and remediation equipment will be
released in accordance with the terms of License Condition 9.10 and NUREG 1575 Supplement
1, Multi-Agency Radiation Survey and Assessment of Materials and Equipment Manual
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(MARSAME) (NRC, 2009) as appropriate and applicable. Contaminated soils from the Mill
area will be disposed of in the tailings cells in accordance with Section 7.0.
6.2 Mill Site and Windblown Contamination
Areas with contamination around the Mill site are expected to be primarily surficial, except for the
claricone and ammonium sulfate pad areas, and include the ore storage area and limited surface
contamination of roads. Ore and alternate feed materials will have been previously removed from
the ore stockpile area. Contaminated materials at the Mill site will be excavated and be disposed in
the Cell 1 Disposal Area in accordance with Section 7.0. The depth of excavation will vary
depending on the extent of contamination and will be based on the criteria in Section 7.2.3, except
for the claricone and ammonium pad areas which had removal depths and extents outlined in
letters submitted by EFRI to the DWMRC on 10/26/12 and 12/23/13, respectively. All other
11e.(2) byproduct materials will be disposed in the tailings cells.
The Owner proposes to reclaim the Mill and surrounding land areas within the property boundary
by excavating and placing wastes, demolition debris and contaminated soils into a fenced and
controlled permanent disposal area. The permanent disposal area, the current restricted area, and
the property boundary, are delineated in Drawing REC-1. The Owner proposes to survey and
release all areas within the property boundary, excluding the Cell 1 Disposal Area and Cells 2, 3,
4A, and 4B, for unrestricted use.
Contaminants of concern are Ra-226, Th-230 and natural uranium (U-nat). The evaluation and
remediation will be dictated by Ra-226, which is the contaminant with the most restrictive cleanup
standard (based on the SENES Consultants, Inc. letter to EFRI dated August 15, 2012; this letter
was provided as Attachment I to EFRI’s Supporting Documentation for Response to Utah
DWMRC Interrogatory 13/1 (SENES 2012)). The correlation between Ra-226 and the remaining
two contaminants will be developed as outlined in subsequent sections of these Technical
Specifications. Verification of the remediation will be established through a Wilcoxon Rank Sum
(WRS) test between the study areas and local background areas. The procedure for verification will
follow guidance from NUREG-1575 Multi-Agency Radiation Survey and Site Investigation
Manual (MARSSIM) (NRC, 2000). The procedure will include:
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• Scoping and characterization surveys: soil samples will be collected to develop a
correlation between gamma radiation levels and the unity rule.
• Classification of land areas: to (MARSSIM) Class 1 through Class 3.
• Remediation of land areas driven by correlation-based prediction equation between gamma
radiation and the unity rule for multiple radionuclides.
• Final Status Survey using the Wilcoxon Rank Sum (WRS) test with local background
areas.
The procedure also follows the Data Quality Objective (DQO) process defined in the MARSSIM
Guidance, as discussed in Section 6.6, and NUREG-1757 Volume 2 Consolidated
Decommissioning Guidance, Characterization, Survey, and Determination of Radiological Criteria
(NRC, 2006).
6.3 Scoping and Characterization Surveys
Areas contaminated through process activities or windblown contamination from the tailings
areas will be remediated to meet applicable cleanup criteria for Ra-226, Th-230, and U-nat.
Contaminated areas will be remediated such that the residual radionuclides remaining on the site,
which are distinguishable from background, will not result in a dose that is greater than that
which would result from the Ra-226 soil standard, that is, 5 pCi/g above background for the
surface 15 cm soil layer and 15 pCi/g for the subsurface 15 cm soil layer, respectively as
discussed in Section 6.6.3.3 and hereafter referred to as “5/15”.
An initial scoping survey for windblown contamination will be conducted based on analysis of
pertinent past radiometric and land use information. Operational surveys of the areas surrounding
the Mill and tailings area have indicated potential windblown contamination only to the north
and east of the ore storage area, and to the southwest of Cell 3. The initial scoping survey will be
conducted using calibrated gamma radiation instruments on 15 meter (15 m) transects.
Additional surveys will be conducted in a halo, or buffer zone, around the projected impact area.
The survey in the halo will be conducted using 25 m transects. Areas where no readings exceed
75 percent of the gamma radiation guideline value, as developed per Section 6.3.2, will be
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classified as unaffected, and will not require remediation. Areas where one or more readings
exceed the gamma radiation guideline value will be further investigated to determine whether or
not remediation is required.
Prior to initiating cleanup of windblown contamination, a statistically-based soil sampling
program will be conducted in an area within or outside the property boundary that is similar to
the areas to be remediated, to determine the average background Ra-226 concentration, or
concentrations, to be ultimately used for the cleanup. Similarity, or representativeness, will be
determined based on geology, soil type and soil chemistry.
Soil cleanup verification will be accomplished by use of calibrated gamma radiation instruments.
Multiple instruments will be maintained and calibrated to ensure availability and consistency
during remediation efforts (Section 6.3.4).
6.3.1 Scoping and Characterization Survey for the Subsurface
The subsurface will only be investigated in areas where the historical site assessment (HSA)
demonstrates the possibility of contamination below the 15 cm depth. This does not include areas
of windblown contamination, or the ore storage area (unless also affected by an event
demonstrated by the HSA). The method for the subsurface investigation will include boreholes
where soil sampling and downhole gamma radiation investigations may occur. This method will
be developed based on the HSA.
6.3.2 Gamma Radiation to Unity Rule Correlation
The Owner plans to use radiation measurement instrumentation for soil background analyses,
unity rule – gamma radiation correlations, verification data, and sensitivity analyses. Soil
background analyses will be completed using MARSSIM methods (NRC, 2000) for background
reference areas.
Soil samples taken during characterization for correlation will be analyzed by a certified
laboratory to determine the on-site correlation between the gamma radiation readings and the
concentration of Ra-226, Th-230 and U-nat, in the samples. Samples will be taken from:
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• Areas known to be contaminated with only processed uranium materials (i.e. tailings sand
and windblown contamination)
• Areas in which it is suspected that unprocessed uranium materials (i.e. ore pad and
windblown areas downwind of the ore pad) are present
The actual number of samples used will depend on the correlation of the results between gamma
radiation readings and the unity rule as discussed below. Windblown contamination to the
northeast of the Mill area is primarily associated with the unprocessed ore from the ore storage
pad. The slightly larger windblown contamination area to the southwest of the Mill area is
primarily associated with the processed tailings. A minimum of 35 samples of windblown
tailings (to the southwest), and 15 samples of windblown unprocessed ore materials (to the
northeast) will be collected.
Sufficient samples will be collected for developing prediction equations to calculate the linear
regression lines and the corresponding upper and lower 95 percent confidence levels for each of
the instruments. The upper one-sided 95 percent confidence limit will be used for the guideline
value for correlation between gamma radiation readings and Ra-226 concentration. Because the
unprocessed materials are expected to have proportionally higher values of uranium in relation to
the Ra-226 and Th-230 content, the correlation to the gamma radiation readings are expected to
be slightly different than readings from areas known to be contaminated with only processed
materials. Areas expected to have contamination from both processed and unprocessed materials
will be evaluated using the more conservative correlation, or will be excavated to the Ra-226
standard which should ensure that the uranium is removed.
The samples will be judgmentally selected with Ra-226 concentration at three different intervals
related to the guideline value (5 pCi/g above background):
• 25 percent of the guideline value
• Approximately the guideline value
• Approximately twice the guideline value for the area of interest
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This selection will maximize the precision of the correlation relationship at 5.0 pCi/g above
background. Background Ra-226 concentrations have been gathered over a 16-year period at
sample station BHV-3 located upwind and 5 miles west of the Mill. The Ra-226 background
concentration from this sampling location is 0.93 pCi/g. This value and the concentrations of U-
nat and Th-230 assumed in equilibrium with the Ra-226 will be used as an interim value for the
background concentration used only in the initial planning for this project (e.g. use of historical
knowledge for preliminary setting of verification sample sizes). Background locations for the
verification test will have the three contaminants measured at multiple locations.
Because Ra-226 has short-lived radioactive decay products that are strong gamma radiation
emitters (namely Pb-214 and Bi-214), gamma radiation surveys can be effective for
characterizing soil Ra-226 distributions across large areas, including on relatively small spatial
scales. The well-established, effective, and widely-used analytical approach for spatially
comprehensive characterization of Ra-226 concentrations in surface soils involves spatially
intensive gamma radiation surveys combined with the use of gamma radiation and soil Ra-226
concentration correlations.
If a gamma radiation and Ra-226 concentration correlation is statistically significant, Ra-226
concentrations in surface soils can be predicted with reasonable accuracy based on gamma
radiation readings collected at a high density of measurements across large areas. The same is
true for other radionuclides, although correlative relationships tend to be less statistically
significant and estimation uncertainty can be higher. The advantage of gamma radiation surveys
is that a much higher density of measurements of terrestrial sources of gamma radiation is
possible and when combined with gamma radiation/soil radionuclide correlation analysis, the
approach produces a more comprehensive spatial characterization for comparisons against
baseline conditions and evaluation of potential radiological contamination.
Fifteen soil samples will be collected in the restricted area to establish a correlation between the
soil sampling analysis and the gamma radiation count. Additional measurement locations will be
added, if necessary, to reach suitable precision, as defined in Section 6.6.3.7. The method that
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will be used in an effort to develop statistically significant gamma radiation/soil radionuclide
correlations is as follows:
1. At each correlation plot, a 100 m2 (10 m x 10 m) plot for correlation measurements
and soil sampling will be established with pin flags. A gamma radiation scan will be
performed across each correlation plot (5 m transects at a detector height of 18
inches). The average gamma radiation reading (e.g. cpm) from scan data across each
correlation plot will be calculated and recorded in the field logbook, or developed
using data collected from the gamma radiation scan. See Figure A-1 for the scan path.
2. Within each 10 m x 10 m correlation plot nine sub-samples of surface soils, one in the
center, and eight against the edges of the plot, will be collected across the plot (at a
depth of 15 cm) and composited into a single sample to represent average soil
radionuclide characteristics across the correlation plot. Composite surface soil
samples from each correlation plot will be submitted to a qualified commercial
laboratory for analysis of U-nat, Ra-226, Th-230, Th-232 (by Ra-228), and K-40.
The correlation plot scanning and sampling design for each location is illustrated in
Figure A-1.
3. The laboratory chain of custody/analysis request form to be submitted with composite
correlation plot soil samples will specify the following requirements:
a. Thorough homogenization of each sample at the laboratory.
b. Ra-226 analysis by EPA Method 901.1, modified for soil samples, with
sample counting to be performed at least 21 days after sealing in the counting
tin to ensure full ingrowth of Rn-222 and its decay products. Analysis of K-
40 will also be conducted with EPA method 901.1, as will analysis of Ra-228
(to determine Th-232 concentrations under the assumption of radiological
equilibrium).
c. U-nat analysis by EPA Method 200.8 (ICP-MS) or equivalent, preferably with
soil matrix digestion using EPA Method 3052 (microwave assisted acid
digestion). EPA Method 3050B or equivalent digestive methods may
alternatively be used; however, digestion will not be as complete.
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d. Th-230 analysis by EPA Method 200.8 (ICP-MS) or equivalent, preferably
with soil matrix digestion using EPA Method 3052 (microwave assisted acid
digestion). Ten percent of the correlation plot samples will also be analyzed
for Th-230 by alpha spectroscopy.
4. Upon receiving soil analysis results from the laboratory, regression analysis will be
performed to determine, based on paired data from all correlation plots, if significant
statistical correlations exists between average gamma radiation readings and soil Ra-
226, U-nat, Th-230, Th-232 by Ra-228 and K-40 concentrations.

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6.3.3 Area Classification
The characterization and scoping surveys will be used to classify areas as either non-impacted or
impacted areas. The impacted areas will be further classified into Classes 1-3 (NUREG-1575;
NRC, 2000). The classification of the areas will determine the rigor required to survey and
release the areas.
• Class 1 areas are areas which have, or had prior to remediation, a potential for radioactive
contamination based on Mill operating history, or known contamination based on
previous radiological surveys. Areas containing contamination in excess of the release
criterion, specifically the Derived Concentration Guideline Level (DCGL) associated
with the Wilcoxon Rank Sum Test (DCGLW), established by the radium benchmark dose
(RBD) approach in Section 6.6.3.3 prior to remediation should be classified as Class 1
areas. The concentration terms “DCGLW”, “release criterion”, and “unity rule”, have
been used interchangeably throughout the remainder of these Technical Specifications.
However, where a gamma radiation-based level is meant, the term “gamma guideline
level” is used specifically.
• Class 2 areas are areas which have, or had prior to remediation, a potential for radioactive
contamination or known radioactive contamination, but are not expected to exceed the
DCGLW.
• Class 3 areas are any impacted areas not expected to contain any residual radioactivity, or
are expected to contain levels of residual radioactivity at a small fraction of the DCGLW,
based on Mill operating history and previous radiological surveys.

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Table 6.1 - Final Status Survey Unit Classification for Land Areas
Survey Unit Classification Statistical Test
Elevated
Measurement Comparison
Sampling
and/or Direct Measurements
Suggested
Area (m2) Scanning
Impacted Class 1 Yes Yes Systematic 2000 100% Coverage
Class 2 Yes Yes Systematic 10,000 10-100% Systematic
Class 3 Yes Yes Random No limit Judgmental
Non-Impacted No No No None None

6.3.4 Remediation
Remediation will only occur in survey units that cannot pass the release criterion (DCGLW).
Remediation will consist of excavation of soils and placement in the tailing cells, as stated in
Section 7.2.3. Remedial action support surveys will be conducted to guide the remediation.
Remedial action support surveys will be conducted in a manner similar to the Final Status
Surveys (FSSs), described in Sections 6.4 and 6.6, to ensure that the remedial action achieves the
DCGLW. Excavation will continue until the gamma radiation guideline value is achieved for
surface soils.
Upon completion of remediation, gamma radiation surveys will be conducted on the excavated
area and areas surrounding the excavation.
6.4 Final Status Surveys
Areas of the site will be released through the final status survey (FSS) process (see Section 6.6).
Survey units will be released through FSS reports provided to DWMRC for each survey unit.
Survey units that require remediation will undergo the FSS process after remediation. Survey
units must meet the release criterion set forth in this section. Each survey unit that meets the
release criterion will be released, pending DWMRC approval.
6.4.1 Release Criterion
Release criteria have been established and are discussed in more detail in Section 6.6.
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6.4.2 Statistical Test
The WRS test will be performed using the background reference data set and the systematic
sample data set from the survey unit under investigation. The background reference data set will
be added to the unity rule (1) prior to the statistical test being completed. The two data sets will
be derived using the weighted sum for multiple radionuclides set forth in MARSSIM (NRC,
2000):
For surface soils: 𝐴𝐴 (𝑝𝑝𝑝𝑝𝑝𝑝/𝑔𝑔 𝑅𝑅𝑅𝑅226)5 (𝑝𝑝𝑝𝑝𝑝𝑝/𝑔𝑔)+𝐵𝐵 (𝑝𝑝𝑝𝑝𝑝𝑝/𝑔𝑔 𝑈𝑈𝑈𝑈𝑅𝑅𝑈𝑈)545 (𝑝𝑝𝑝𝑝𝑝𝑝/𝑔𝑔)+𝑝𝑝 (𝑝𝑝𝑝𝑝𝑝𝑝/𝑔𝑔 𝑇𝑇ℎ230) 46 (𝑝𝑝𝑝𝑝𝑝𝑝/𝑔𝑔)+1
For subsurface soils: 𝐴𝐴 (𝑝𝑝𝑝𝑝𝑝𝑝/𝑔𝑔 𝑅𝑅𝑅𝑅226)15 (𝑝𝑝𝑝𝑝𝑝𝑝/𝑔𝑔)+𝐵𝐵 (𝑝𝑝𝑝𝑝𝑝𝑝/𝑔𝑔 𝑈𝑈𝑈𝑈𝑅𝑅𝑈𝑈)2908 (𝑝𝑝𝑝𝑝𝑝𝑝/𝑔𝑔)+𝑝𝑝 (𝑝𝑝𝑝𝑝𝑝𝑝/𝑔𝑔 𝑇𝑇ℎ230)142 (𝑝𝑝𝑝𝑝𝑝𝑝/𝑔𝑔)+1
For instance, if the background reference area surface soil data set showed that one sample
contained 2.2 pCi/g Ra-226, 2.2 pCi/g U-nat, and 2.0 pCi/g Th-230, the sample would be
represented in the WRS data set as the following: 2.2 (𝑝𝑝𝑝𝑝𝑝𝑝/𝑔𝑔 𝑅𝑅𝑅𝑅226)5 (𝑝𝑝𝑝𝑝𝑝𝑝/𝑔𝑔)+2.2 (𝑝𝑝𝑝𝑝𝑝𝑝/𝑔𝑔 𝑈𝑈𝑈𝑈𝑅𝑅𝑈𝑈)545 (𝑝𝑝𝑝𝑝𝑝𝑝/𝑔𝑔)+2.0 (𝑝𝑝𝑝𝑝𝑝𝑝/𝑔𝑔 𝑇𝑇ℎ230)46 (𝑝𝑝𝑝𝑝𝑝𝑝/𝑔𝑔)+1 =1.49
Thus, 1.49 (unitless) for this particular background sample would be used in the WRS
comparison data set for the background reference area to be compared to the survey unit data. If
this sample were from the survey unit, the value would be 0.49 (unitless).
The WRS test will be performed on the survey unit and background reference area using the
method in MARSSIM. For Class 1 to Class 3 survey units, the null hypothesis is that the survey
unit exceeds the release criterion. If the null hypothesis is rejected, the mean for the survey unit
does not exceed the DCGLW, and no area exceeds the DCGL Elevated Measurement
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Comparison (DCGLEMC) then the survey unit is presumed to meet the release criterion and,
pending DWMRC approval, released.
If an area in a survey unit exceeds the DCGLW, the area of the contamination will be determined
using a mixture of soil sampling and gamma radiation surveying.
A comparison to the EMC will be made to determine if the area presents a dose equal to, or
lower than, the DCGLW scenario. This determination will be completed through the derivation of
area factors based on the size of hypothetical areas of contamination. The area factor for a
contaminated area will be multiplied by the DCGLW to determine the allowable contaminant
concentration for that size of area, which still meets the unity rule. Area factors will be
determined prior to FSS’s and will be approved by DWMRC.
Areas of elevated activity that do not meet the DCGLEMC will be remediated.
6.5 Instrument Quality Assurance/Quality Control (QA/QC)
Field gamma radiation survey instrumentation will be sodium iodide (NaI) detectors. To the
extent possible, the same instruments will be use throughout the characterization, remediation
and final status survey. These instruments will be cross-calibrated to allow other identical
instruments or similar instruments to be used. Individuals will be appropriately trained to use the
selected instrumentation and the instrumentation will be suitable for its intended use.
Instrumentation shall be operated in accordance with written procedures and manufacturers’
manuals which will provide guidance to field personnel on the proper use and limitations of the
instruments.
6.5.1 Calibration
The manufacturer’s current calibration/maintenance records will be kept on site for review and
inspection for all instruments used during the survey. Past calibration records will be retained
for inclusion in the FSS report.
The records will include, at a minimum, the following:
• Equipment identification (name, model, and serial number)
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• Manufacturer
• Date of calibration
• Calibration due date
Instrumentation must be maintained and calibrated to manufacturer’s specifications to ensure
that required traceability, sensitivity, accuracy, and precision of the equipment/instruments are
maintained. Instruments will be maintained and calibrated in accordance with American
National Standards Institute N323A (ANSI, 1997).
6.5.2 Source and Background Checks
Prior to and after daily use, instruments will be QC-checked by comparing the instrument’s
response to a designated gamma radiation source and to ambient background. Prior to
commencement of field operations, a site reference location will be selected for the performance
of these checks. Acceptable ranges (count rate) for each instrument will be established by
performing a series of counts. The acceptable range will be + 2 sigma of the mean of the series of
counts. QC source checks will consist of one-minute integrated counts with the designated
source position in a reproducible geometry, performed at the designated location. Background
checks will be performed in an identical fashion with the source removed. Results of the
background and QC checks will be recorded in a field logbook.
Instrument response to the designated QC check source will be plotted on control charts or in
tabular form (spreadsheets) and evaluated against the average source and background readings
established at the start of the field activities. A performance criterion of +/– 2 sigma of this
average will be used as an investigation action level, and a repeat of the measurement will be
performed. A performance criterion of +/– 3 sigma of this average will be used as a failure level
requiring corrective action. Results exceeding this criterion will be investigated and appropriate
corrections to instrument readings will be made if the response is affected by factors beyond
personnel control, such as large humidity or temperature changes. The instrument(s) in question
will be removed from service while investigations and corrective actions are in progress.
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Instrument response to ambient background will be used to establish a mean background
response for each instrument, to monitor gross fluctuations in background activity (e.g., from
changes in barometric pressure and other, non-contaminant related causes), and to evaluate
detector response. The background measurements are performed for the purpose of checking for
detector contamination and electronic stability (especially cabling).
Instrument response to source checks are used to prove detector efficiency and electronics
stability.
During QC checks, instruments shall be inspected for physical damage, current calibration and
erroneous readings. The individual performing these tasks shall document the results in
accordance with the instrument protocol within MARSSIM, as provided in Exhibit A-1.
Instrumentation that does not meet the specified requirements of calibration, inspection, or
response check will be removed from operation. If the instrument fails the QC response check,
any data obtained to that point, but after the last successful QC check will be considered invalid
due to potentially faulty instrumentation.
6.6 Data Quality Objectives
This plan was developed using guidance from MARSSIM to ensure surveys are conducted with the
proper rigor, quality assurance, and statistical analysis to make proper decisions. A key step in the
MARSSIM process is the development of DQOs. DQOs ensure collection of data of the right type,
quality, and quantity to support decisions, the decommissioning process, and the achievement of the
desired end state. The DQOs are outlined below, and include systematic processes to:
1) State the problem
2) Identify the goal of the characterization
3) Identify inputs to the decision
4) Define the study boundaries
5) Develop the decision rules/analytical approach
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6) Define acceptable decision errors
7) Optimize the design
6.6.1 State the Problem
Ultimately, the mill will be decommissioned, the demolition and decommissioning waste disposed
in the tailings cells, and the tailings system reclaimed as approved by DWMRC. The reclamation
objective is to release the mill’s land areas, other than the tailings area, for unrestricted use. Land
areas may have radiological contamination from milling operations. The scanning procedure
needs to identify and distinguish areas that can be released, from areas that must be remediated
prior to being released. The data collected following excavation in remediation areas must also be
suitable for use in the FSS to demonstrate that the clean-up criteria have been met.
6.6.2 Identify the Decisions
The decision process will be based on data from scoping and characterization surveys, gamma
radiation correlation, remediation and final status surveys.
Survey and sampling data will be used to:
1) Assist in classification of survey units
2) Determine areas requiring remediation
3) Develop Final Status Surveys to verify that clean-up criterion has been met
6.6.3 Identify Inputs to the Decision
6.6.3.1 Characterization and Scoping
HSAs, scoping surveys, and characterization surveys will be used to determine the extent of the
contamination as well as the presence of useable relationships/ratios between the radionuclides
of background reference areas. The presence of useable relationships will be established in
accordance with Section 4.5 of MARSSIM (NRC, 2000). Soil sampling will be conducted in the
survey areas and samples will be analyzed for U-nat, Th-230 and Ra-226.
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The background must be correctly characterized and a proper background reference area chosen to
represent the background for the Mill soils. This will ensure that the soil will be cleaned up to the
appropriate level. Goals of the characterization include selecting an appropriate background
reference area(s) and appropriate background(s), and correctly comparing selected background(s)
with the survey units. Multiple backgrounds may be selected for different survey units depending
on the characterization and scoping surveys in conjunction with the HSA.
From MARSSIM Section 4.5, a site background reference area should have similar physical,
chemical, geological, radiological, and biological characteristics as the survey unit being
evaluated. Background reference areas are normally selected from non-impacted areas, but are
not limited to natural areas undisturbed by human activities. In some situations, a reference area
may be associated with the survey unit being evaluated, but cannot be potentially contaminated
by site activities. For example, background measurements may be taken from core samples of a
building or structure surface, pavement, or asphalt. The selected reference areas will be
reviewed with DWMRC.
Systematic soil sampling will occur prior to the FSS, and samples will be analyzed for Ra-226,
Th-230, and U-nat to determine background concentrations to be used for the cleanup. The soil
sampling to determine the average background radionuclide concentrations to ultimately be used
for the cleanup will be conducted prior to remediation. Background sampling will be conducted
in a reference area within or outside of the property boundary that is similar to the area to be
remediated.
Background reference areas will be chosen such that they are representative of the survey unit
locations but are non-impacted from site operations. Representativeness shall be determined on
the basis of geomorphology, geological, geochemical, and radiological, considerations.
6.6.3.2 Correlation
A correlation of the unity rule in the soil to the gamma radiation will be developed. This
correlation will guide remediation and excavation. This correlation is explained in Section 6.3.2.
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Remediation of the soil to meet the unity rule is described in Section 6.3.4. The final status survey
reports will be the definitive source of information to describe the final impacts on the soil left by
the Mill. The reports will detail how the cleanup met the Site Cleanup Criteria and show that each
survey unit meets the cleanup criteria. The FSS reports will verify that the remediation has
achieved the cleanup criteria.
6.6.3.3 Site Cleanup Criteria
The DCGLs for Ra-226 are set at 5 pCi/g for the surface 15 cm soil layer and 15 pCi/g for the
subsurface 15 cm soil layer, respectively (hereafter referred to as “5/15”) (See Attachment D for
further discussion).
The DCGLs for radionuclides other than Ra-226 are derived from doses calculated for Ra-226 at
5/15 using the same exposure scenarios as were used to estimate the dose from Ra-226 at 5/15.
This is referred to as the radium benchmark dose (RBD).
Generally, elevation of U-nat and Th-230 concentrations relative to Ra-226 is unexpected since
the contaminated materials will either be ore (which are at or near secular equilibrium) or tailings
where U-nat is reduced relative to the other uranium decay series radionuclides of interest.
Possible exceptions are:
• Areas with raffinate crystals which may have higher Th-230 concentrations compared to
Ra-226 concentrations
• Areas of spilled yellowcake product near the mill where U-nat may be elevated relative to
Ra-226
The RBD approach was applied as described in Attachment D. The RESRAD (Version 6.5) code
(Yu et al. 2001) was used to implement the RBD approach. As described in NUREG-1569 as
Appendix E (NRC 2003, a Guidance document for NRC Commission Staff on the Radium
Benchmark Dose Approach), NRC considers the RESRAD code as an acceptable code for
application of the Ra-226 benchmark dose approach. In brief, radionuclides at their respective
DCGLs result in the same benchmark dose as the Ra-226 DCGL.
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The DCGLs for the radionuclides of interest for the surface and subsurface layers were
calculated and are provided in Table 6.2. The scenario is for a rancher with the doses determined
using the RESRAD Version 6.5 model. The default RESRAD dietary and inhalation data which
apply for the adult are carefully selected from literature and are already considered to represent
conservative parameter values. Details on the calculation of DCGL’s are provided in Attachment
D.
Table 6.2 - DCGL above background
DCGL (pCi/gram) above background
Radionuclide Surface Subsurface
Ra-226 5 15
U-nat 545 2908
Th-230 46 142

Since there is more than one radionuclide of concern, the criteria for unrestricted use is applied
using the unity rule such that the RBD is never exceeded.
In the equations below, the numerator is determined by subtracting the local background from
the sample analysis following remediation. It is possible that the background may vary between
survey units due to variation in soil types.
The unity rules are:
For surface soil: 𝐴𝐴 (𝑝𝑝𝑝𝑝𝑝𝑝/𝑔𝑔 𝑅𝑅𝑅𝑅226)5 (𝑝𝑝𝑝𝑝𝑝𝑝/𝑔𝑔)+𝐵𝐵 (𝑝𝑝𝑝𝑝𝑝𝑝/𝑔𝑔 𝑈𝑈𝑈𝑈𝑅𝑅𝑈𝑈)545 (𝑝𝑝𝑝𝑝𝑝𝑝/𝑔𝑔)+𝑝𝑝 (𝑝𝑝𝑝𝑝𝑝𝑝/𝑔𝑔 𝑇𝑇ℎ230)46 (𝑝𝑝𝑝𝑝𝑝𝑝/𝑔𝑔)≤1
For subsurface soil: 𝐴𝐴 (𝑝𝑝𝑝𝑝𝑝𝑝/𝑔𝑔 𝑅𝑅𝑅𝑅226)15 (𝑝𝑝𝑝𝑝𝑝𝑝/𝑔𝑔)+𝐵𝐵 (𝑝𝑝𝑝𝑝𝑝𝑝/𝑔𝑔 𝑈𝑈𝑈𝑈𝑅𝑅𝑈𝑈)2908 (𝑝𝑝𝑝𝑝𝑝𝑝/𝑔𝑔)+𝑝𝑝 (𝑝𝑝𝑝𝑝𝑝𝑝/𝑔𝑔 𝑇𝑇ℎ230)142 (𝑝𝑝𝑝𝑝𝑝𝑝/𝑔𝑔)≤1
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MARSSIM requires that the median concentration in a survey unit be demonstrably lower than
the DCGLW following remediation. This is accomplished with a WRS test between soil
concentrations in the survey unit and appropriate background reference locations. For the WRS
test, the actual concentrations are used for the survey unit rather than using the incremental
concentrations, discussed previously in Section 6.4.2.
6.6.3.4 Gamma Radiation Surveys
Gamma radiation surveys will be conducted with a GPS-integrated system using 2-inch by 2-
inch sodium iodide (NaI) detectors or the equivalent. Statistical correlations will be developed
between the radiological soil sample analysis and the gamma radiation count rate. See Section
6.4.2 for the method for development and use of the gamma radiation correlation.
With the GPS-integrated method, high density gamma radiation scanning surveys will be done
using the Ludlum 44-10 detectors at a height of 18 inches above the ground. The surveyor speed
will be approximately 0.5 m/s.
For Class 1 survey units, transects will be 5 m apart and gamma radiation scanning surveys will
continue up to 20 m outside the excavation with averages calculated on each 10-m by 10-m
block. Class 1 survey units will scanned at a density to ensure that 95 percent of the 10-m by 10-
m blocks have at least 20 gamma radiation measurements for blocks in and adjacent to the
excavation areas with measurements in at least three of the four quadrants of the 10-m by 10-m
block.
The remainder of the survey area outside the remediation area will be classified as Class 2 and
will be surveyed at 10 m transects. The requirement for the remainder of the survey area, Class 2,
will be that 95 percent of the blocks have at least 10 gamma radiation measurements.
The Class 3 area will include the buffer areas outside the area of contamination, and this area
will be surveyed with planned transects of 50 m. Twenty percent or more of the 10-m by 10-m
blocks will have at least 10 gamma radiation measurements.
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The mean, median, and standard deviation of the 10-m by 10-m averages will be calculated by
survey unit for data logged during the scanning surveys.
6.6.3.5 Gamma Radiation Guideline Level
The average gamma radiation count rate will be established over the 10-m by 10-m blocks. A
correlation will be established between the gamma radiation level and the unity rule using co-
located gamma radiation and soil concentration measurements. The gamma radiation guideline
value will be the gamma radiation counts that equate to 0.8 (80 percent of unity rule) from the
correlation equation. Locations where the gamma radiation guideline is exceeded will have
additional gamma radiation surveys and potentially additional excavation before verification
sampling.
6.6.3.6 Selection of Verification Samples
Following completion of excavation, if necessary, verification sampling will be carried out for
each survey unit to allow a WRS test with background samples to confirm that the compliance
criteria has been met. Ten sampling blocks will be determined from a random sampling approach
for each survey unit. Following the final status gamma radiation survey, a minimum of 15 blocks
in the survey unit will be measured to confirm the gamma radiation guideline level. For these 15
samples, the five 10- by 10-m blocks with the highest average gamma radiation will be sampled
along with another 10 sample blocks randomly selected from the area.
The soil samples from the 10 randomly selected locations will be assessed to determine if the
mean concentration in the survey unit is statistically below the unity rule with an alpha error of
0.05 using the MARSSIM WRS test.
The number of samples may be increased per Section 6.6.8.
6.6.3.7 Revision of Correlation
The verification sample measurements (soil analysis and mean gamma radiation counts) will be
compared to the correlation to determine if the correlation is statistically valid. The correlation
will be updated with the verification measurements if there is less than a 95 percent probability
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(p-value of 0.05) that the random verification data is less than DCGLW. Verification
measurements (soil sample and mean gamma radiation counts) will be taken with the same
method as the correlation measurements.
6.6.3.7.1 Reporting
For each survey unit, the following will be reported:
1. Number of blocks remediated during remediation phase.
2. Number of blocks with subsequent remediation initiated by gamma radiation
measurement.
3. Gamma radiation coverage compliance (i.e. percentage of blocks meeting number of
measurement criteria).
4. Mean gamma radiation level averaged over the 10-m by 10-m blocks.
5. Mean and range of predicted unity rules based on gamma radiation survey.
6. Mean and range of measured unity rules based on verification sampling.
6.6.3.8 Field Data
The objectives of the survey and sampling activities are to identify the concentrations of residual
radioactive material in the survey units so that the unity rule can be evaluated. This information
will allow a determination of whether a survey unit is likely to be suitable for release. The
average soil concentrations will be evaluated to verify that each radiological DCGLW is met.
6.6.4 Define the Study Boundaries
The soil in the restricted area will be surveyed for radiological contamination of U-nat, Th-230,
and Ra-226. This does not include the tailings cells and unrestricted areas. Survey units will be
established in the unrestricted area if, during the survey of the restricted area, contamination is
found at the boundary of the restricted area or if there is reason to believe contamination is
present in the unrestricted area.
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6.6.5 Develop the Decision Rules/Analytical Approach
If soils exhibit widespread contamination above the DCGLW, then removal of the soil will be
necessary or the EMC process will need to be followed to ensure that areas of contamination will
not exceed the DCGLW following excavation.
6.6.6 Define Acceptable Decision Errors
6.6.6.1 Statistical Tests
The WRS test will be used to compare background reference areas to survey units in the
MARSSIM framework for the FSS reporting. The WRS test is a nonparametric test used to test
for a difference in values between two populations; that is, one data population is hypothesized
to consist of higher average values than the other data population.
MARSSIM suggests using the WRS test in cases where the contaminant is present in background
at a significant fraction of the DCGLW. Since the DCGL is 5 pCi/g for Ra-226 and the
background is in the order of 1 pCi/g or more for Ra-226, the WRS test is the preferred test.
The soil concentrations from the 10 randomly selected locations as defined in Section 6.6.3.6
will be assessed with the WRS test to determine if the median concentration in the survey unit is
statistically below the unity rule with an alpha error of 0.05 using the MARSSIM WRS test.
6.6.6.2 Hypothesis
The decisions necessary to determine compliance with the soil cleanup criteria are based on
precise statistical statements called hypotheses, which are tested using the data from the survey
unit.
Null Hypotheses - The situation that is presumed to exist is expressed as the null hypothesis (H0),
which states “the median concentration in the survey unit exceeds the median concentration in
the background reference area by more than the DCGL.”
Alternative Hypotheses - For a given H0, there is a specified alternative hypothesis (Ha), which is
an expression of what is believed to be the situation if the null hypothesis is not true. The Ha
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states “the median concentration in the survey unit does not exceed the median concentration in
the background reference area by more than the DCGL.”
These hypotheses were chosen for the following two reasons: (1) the burden of proof is placed
on the HA and, (2) the survey unit will not be released until proven to meet the cleanup criterion.
In order to pass the WRS using the above H0, the median concentration of the systematic samples
in the survey unit must be less than the DCGLW above background.
6.6.6.3 Error Types
Decision errors help to determine the number of samples required. Generally, more samples are
required to generate lower decision errors (i.e., the fewer samples, the larger the uncertainty).
The statistical acceptability decisions are designed to avoid two kinds of errors:
• Releasing a survey unit which requires additional remediation
• Remediating a survey unit which is already below the DCGLW
Two possible error types are associated with such decisions, Type I and Type II, which are
described below.
Type I – which is also referred to as a false positive, occurs when H0 is rejected when it is
actually true. The probability of a Type I error is usually denoted by α. This error could result
in higher potential doses to future site occupants than prescribed by the dose-based criterion. The
maximum Type I error rate has been set at α = 0.05 (there is less than 5 percent chance of error).
Type II - which is referred to as a false negative, occurs when H0 is not rejected when it is
actually false. The probability of a Type II error is usually denoted by β. Consequences of Type
II errors include unnecessary remediation expense and project delays. The Type II error rate has
been set at β=0.10 (there is less than 10 percent chance of error).
Statistical correlations will be developed between the unity rule and the gamma radiation
measurements. The unity rule will be determined from measurement data for incremental
concentrations at each sample location. The correlation between the unity rule and the gamma
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radiation measurement at the sample location will produce a prediction equation. MARSSIM
requires that the mean concentration in a survey unit be demonstrably lower than criteria
following remediation but does not require all sampling units, in this case the 10-m by 10-m
areas, to be lower than the criteria. The precision goal for the relationship will be that the mean
prediction uncertainty for the survey unit will be +/- 0.2 when the predicted unity rule is equal to
“1”.
Protocols will be in place to ensure decision errors are kept to a minimum. For example,
instrument quality assurance checks will be required and minimum detectable concentrations
(MDCs) will be met.
The gamma radiation survey will be limited by the MDC for the 2-inch x 2-inch sodium iodide
(NaI) detector which is approximately 104 Bq/Kg (2.8 pCi/gram) for Ra-226, MARSSIM Table
6.7. This MDC is dependent on the background which may raise or lower the MDC (NRC,
2000).
Table 6.3. Reported MDC’s from MARSSIM Table 6.7
Nuclide MDC (Bq/kg) MDC (pCi/gram)
U-Nat 2960 80
Th-230 78,400 2100
Ra-226
(with decay products in equilibrium)
104 2.8

6.6.7 Relative Shift and Number of Samples
The target decision errors are 0.05 and 0.10 for α and β, respectively. The major contributor to
the unity rule is Ra-226 since the criterion is much lower for Ra-226 compared to U-nat and Th-
230. The lower bound of the gray region (LBGR) has been set to 0.8 as Ra-226 has a typical
concentration that is only about 25 percent of the LBGR and the uncertainty will likely be of this
order.
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The preliminary estimate is that a relative shift of 2.0 based on the LBGR of 0.8 and an
uncertainty of twice the background concentration. Using Table 5.3 of MARSSIM (NRC, 2000),
the required number of samples is 8.
Should any area exceed the DCGLEMC or large areas exceed the DCGLW, remediation of the
affected areas would be completed prior to resampling.
6.6.8 Optimize the Design
Initially, gamma radiation scans will be conducted in the restricted areas of the Mill site. The
data from these scans will be reviewed to determine the location of any hotspots. These hotspot
locations will be sampled to determine the activity concentrations of U-nat, Th-230, and Ra-226.
A prediction equation of the unity rule will provide the basis for scanning large areas effectively
to direct focused remediation and to ensure that the cleanup criterion is met.
The statistical test (WRS test) could fail to show that the mean is below the criterion due to the
initial number of verification samples, since there may be insufficient samples to achieve the
desired decision error rates given the characteristics of the survey unit. In cases where data
suggest that the concentration is below the criterion (e.g., the mean bases), additional samples
would reduce the decision error and potentially allow the survey unit to pass. In this case, the
mean and variability of the 10 randomly selected measurements will be used to determine
MARSSIM’s relative shift with the lower bound of the gray region equal to 0.8 of the unity rule.
The α error will be set to 5 percent and the β error set to 10 percent to determine the required
total number of samples. These samples would be collected and the WRS repeated on the larger
data set.
6.7 Soil Sampling
6.7.1 Laboratory Approval
All samples will be analyzed for radionuclide activity concentration (pCi/g). All analyses will be
performed by a DWMRC-approved/certified laboratory and a DOE-certified, or National
Environmental Laboratory Accreditation Program (NELAP)-certified laboratory. The laboratory
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will analyze method blanks, matrix spike samples, laboratory control samples and replicates.
Typical required detection levels will be less than or equal to one tenth of the DCGL for each
radionuclide.
6.7.2 Data Validation
Laboratory analytical results from the final status survey will be validated and will be reviewed
by the data validator for the following:
• Data completeness/sample integrity
• Holding times
• Calibration
• Alpha spectroscopy tracer analysis
• Laboratory and field blanks
• Laboratory control samples
• Laboratory and field duplicates
• Alpha spectroscopy matrix spikes
• Quantitation and detection limits
• Alpha spectroscopy chemical separation specificity
• Gamma radiation spectroscopy target radionuclide list identification
• Secular equilibrium verification, and result verification
Review of these parameters checks the quality of the data with respect to:
• Precision – which is a measure of the reproducibility of an analysis under a given set of
conditions. Precision will be evaluated through a review of field duplicate and laboratory
duplicate samples.
• Accuracy – which is a measure of the bias that exists in a measurement system.
Accuracy will be evaluated through a review of laboratory control samples, matrix spike
samples, method blanks, and tracer recoveries.
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• Representativeness – which is a measure of the degree to which the sampling data
accurately and precisely represent site conditions. Representativeness will be evaluated
through a review of raw data and through a comparison of whether the proposed scoping
survey was implemented.
• Comparability – which is a measure of the degree of confidence with which two data sets
can be compared to each other. Comparability will be evaluated through an assessment
of whether appropriate and acceptable analytical methods were used.
• Completeness – which is a measure of the amount of valid data obtained.

6.8 Employee Health and Safety
Programs currently in place for monitoring of exposures to employees will remain in effect
throughout the time period during which tailings cell reclamation, mill decommissioning and
clean up of windblown contamination are conducted. This will include personal monitoring and
the ongoing bioassay program. Access control will be maintained at the Restricted Area
boundary to ensure employees and equipment are released from the site in accordance with the
current License conditions. In general, no changes to the existing programs are expected and
reclamation activities are not expected to increase exposure potential beyond current levels.
6.9 Environment Monitoring
Existing environmental monitoring programs will continue during the time period in which
reclamation and decommissioning is conducted. This includes monitoring of surface and
groundwater, airborne particulates, radon, soils and vegetation according to the existing License
conditions. In general, no changes to the existing programs are expected and reclamation
activities are not expected to increase exposure potential beyond current levels.
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6.10 Quality Assurance
In general, the QA/QC Plan details the Owner’s organizational structure and responsibilities,
personnel qualifications, operating procedures and instructions, record keeping and document
control, sampling procedures and outside laboratory testing.
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7.0 MATERIAL DISPOSAL
7.1 General
This section outlines work associated with placement of materials in the disposal cell area within
Cell 1 (Cell 1 Disposal Area) and tailings cells (Cells 2 through 4).
7.2 Materials Description
The types of materials to be disposed of are outlined below.
7.2.1 Raffinate Crystals
After the residual liquid in Cell 1 has been evaporated, the raffinate crystals from Cell 1 will be
excavated and disposed in one of the tailings disposal cells. The crystals are likely to have
granular consistency, with larger crystal masses that may require breaking down for loading and
transport (using the loading equipment).
7.2.2 Synthetic Liner
The existing PVC liner in Cell 1 will be removed and disposed of in one of the tailings disposal
cells.
7.2.3 Contaminated Soils
During remediation, soils located in and around the Mill site that exceed the soil cleanup
guideline value will be placed in one of the tailings disposal cells. Soils excavated from Cell 1 to
meet design grades or exceed the soil cleanup guideline value shall be placed in one of the
tailings disposal cells.
7.2.4 Mill Debris
The Mill debris will include equipment, such as tankage and piping, agitation equipment, process
control instrumentation and switchgear, and contaminated structures (including concrete
structures and foundations). Mill debris will be placed in the disposal area in Cell 1 (disposal
cell)Cell 1 Disposal Area.
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7.3 Work Description
Materials to be disposed in the cells will be spread over the working surface as much as possible
to provide relatively uniform settlement and consolidation. In the disposal cell, a minimum of
one foot of soil will be placed over the clay liner prior to placing any debris.
7.3.1 Raffinate Crystals
Raffinate crystals will be removed from Cell 1 and transported to the tailings cells. Placement of
the crystals will be performed as a granular fill, with large-sized material broken to minus 6-inch
size. Voids around large material will be filled with finer material. Actual placement procedures
will be evaluated by the CQA Officer during construction as crystal materials are placed in the
cells and modified with the agreement of the DWMRC.
7.3.2 Synthetic Liner
The PVC liner will be cut, folded (when necessary), removed from Cell 1, and transported to the
tailings cells. The liner material will be spread as flat as practical over the designated area.
After placement, the liner will be covered as soon as possible with at least one foot of soil,
crystals or other materials for protection against wind uplift, as approved by the CQA Site
Manager.
7.3.3 Contaminated Soils
The extent of contamination of the Mill site will be determined by gamma radiation scanning and
the A correlation developed between gamma survey readings and the unity rule concentrations
(Section 6). Gamma survey readings will be used to define cleanup areas and confirm cleanup.
Soil sampling will be conducted to verify that the cleanup results meet soil cleanup guideline
values.
Where surveys indicate the above criteria have not been achieved, the soil will be removed to
meet the criteria. Soil excavated from Cell 1 will be transported to one of the tailings cells.
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7.3.4 Mill Debris
Debris will be spread across the bottom of the disposal cell to avoid nesting and to reduce the
volume of voids present in the disposed mass. Stockpiled soils and/or other approved materials
will be placed over and into the debris in a sufficient lift thickness to fill the voids between the
debris pieces. The CQA Site Manager will approve the use of materials other than stockpiled
soils for filling voids.
7.3.5 Material Sizing and Preparation
Demolition debris to be placed in the disposal area of Cell 1Cell 1 Disposal Area will consist of
equipment and structural material from facilities demolition. Demolition procedures are outlined
in the Appendix B to the Reclamation Plan (Preliminary Mill Decommissioning Plan). Because
of the wide variety in shape and size of demolition debris, material of odd shapes will be cut or
dismantled to facilitate handling, loading, transport, and placement in the disposal cell. The
maximum size of dismantled or cut materials will not exceed 20 feet in the longest dimension
and a maximum volume of 30 cubic feet. Smaller dimensions may be necessary for loading,
handling, hauling, and placement of material.
7.3.6 Incompressible Debris
Material that is not compressible (steel columns and beams, concrete, and other solid material)
will be reduced in size for loading, hauling, and placement in the disposal cell. Incompressible
debris shall be placed, oriented, or spread in a manner that minimizes void spaces below,
between, and above these materials. Incompressible debris shall be placed on and covered with
soils or similar materials (Section 7.2.3). Incompressible debris such as steel members shall be
placed in the disposal cell with the longest dimension oriented horizontally.
Thick-walled pipe, conduit, tanks, vats, pressure vessels, and other hollow materials that cannot
be crushed or dismantled shall be transported to the planned location within the disposal cell and
oriented for filling and burial. The voids on the inside of the item will be filled with
contaminated soil, clean fill soil, or grout (controlled low-strength material or flowable fill).
Contaminated soil (Section 7.2.3) or clean fill will be placed outside of the items and compacted
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with standard compaction equipment (where possible) or hand-operated equipment to the
compaction requirements in Section 7.4. Several lifts of compacted contaminated soil or clean
fill may be necessary to fill around and cover these items.
For debris where internal voids cannot practically be filled with soil, a grouting program will be
initiated to pump controlled low strength material (CLSM, flowable fill) into the voids. Debris
will be grouped together and characterized as materials that will require grouting, so that a
significant volume of debris can be grouted in a single action, rather than grouting individual
lengths of pipe. Pipe sections could be stacked horizontally, or cut short enough to stand
vertically in a safe manner. Grout will fill the voids within the grouped debris with a soil berm or
trench used to contain the grout laterally around the perimeter of the selected debris.
If CLSM is required for the grouting of voids that cannot be filled with soil, the mix design for
the grout will mimic, as closely as possible, the strength and hydraulic properties of the
contaminated soil that will also be used for filling voids within the debris. The unconfined
compressive strength of the CLSM will be between 30 and 150 psi, and unit weights will be
approximately 100 to 120 pcf.
7.3.7 Compressible Debris
Materials that are compressible (such as thin-walled piping and thin-walled tanks) will be
flattened or crushed in a designated staging area or in the disposal cell. Flattening or crushing
will be done with a hydraulic excavator bucket or other attachments, or with a dozer or other
steel-tracked equipment.
These materials shall be placed in the disposal cell and spread to form a lift with a maximum
thickness of two feet. Placement shall be done in a manner resulting in materials lying flat and
minimizing void spaces. Pipe shall be cut into lengths of approximately 10 feet or less for
disposal. Pipe larger than 12 inches in diameter shall be longitudinally split or cut, or filled with
grout.
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7.3.8 Organic Debris
Organic materials (such as wood and paper) will be placed in the disposal cell in maximum lifts
of 12 inches and mixed with the soil and other incompressible debris during placement to
prevent pockets of organic material from being created. Organics mixed with soil for spreading
will be limited to 30 percent by volume of the mixture.
7.3.9 Soils and Similar Materials
Soils and soil-like materials to be placed in the disposal cell will be from on-site areas identified
by the Owner for excavation. Soil or soil-like material will be placed and compacted over each
lift of debris (Section 7.2.4) or other materials in lifts not to exceed 2 feet in loose thickness and
compacted prior to placement of additional lifts. Soils will also be used for interim soil cover to
minimize exposure of demolition materials and other materials to air and meteoric water.
7.4 Performance Standards and Testing
7.4.1 Material Compaction – Debris Lifts
During construction, the compaction requirements for the raffinate crystals will be evaluated
based on field conditions, material quantities, and compaction equipment. The compaction
requirements will be determined by the CQA Site Manager and the Construction Manager or a
designated representative, with the agreement of the Owner.
Each lift of debris (up to 2 feet thick) will be covered with soil (Section 7.3.9) (up to 2 feet in
loose thickness). Each lift of soil or similar material will be compacted with a minimum of 6
passes with vibratory compaction equipment. The number of passes shall be confirmed with the
actual compaction equipment on site with a field test section to establish a correlation between
the field compaction method and 80 percent of maximum dry density for the soil, as determined
by the standard Proctor test (ASTM D698).
The CQA Technicians will monitor and approve debris placement. In areas where voids are
observed during placement, the Contractor shall re-excavate the area, fill any voids encountered
with soil and recompact the materials, or grout the voids. The CQA Site Manager will
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recommend implementation of a grouting program where voids, either within a debris mass, or
within a vessel, cannot be properly filled with soil using conventional equipment.
7.4.2 Material Compaction – Final Disposed Material Surface
The upper 12 inches of the final disposed material surface shall be compacted to 90 percent of
the maximum dry density for the material, as determined by the standard Proctor test (ASTM
D698).
7.4.3 Testing Frequency
Field density tests shall be compared with standard Proctor tests (ASTM D698 Method A or C)
on the same material. Standard Proctor tests shall be conducted at a frequency of at least one test
per 5,000 cubic yards of material compacted, or when material characteristics show significant
variation.
Field density testing may be conducted with the sand cone test (ASTM D1556) or a nuclear
density gauge (ASTM D6938, or as modified by the CQA Site Manager). Correlation of nuclear
density gauge results shall be by comparison with results from sand cone test(s) and laboratory
testing for water content(s) using the oven drying method (ASTM D2216) on similar material.
The frequency of the field density and moisture tests will be not less than one test per 2,000
cubic yards of compacted soil. A minimum of two tests will be taken for each day that more
than 150 cubic yards of material is placed. A minimum of one test per lift and at least one test
for every full shift of compaction operations will be taken.
7.4.4 Final Slope and Grades
The final disposed material surface shall have maximum side slopes of 5:1 (H:V) and a top
surface sloping in the directions and grades shown on the Drawings. The side slopes and top
surface shall be free from abrupt changes in grade or areas of runoff concentration. The final
disposed material surface shall be compacted with approved construction equipment to form a
smooth surface with uniform density for subsequent cover placement.
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8.0 COVER CONSTRUCTION
8.1 General
This section outlines work associated with construction of the cell cover system. A multi-
layered earthen cover will be placed over tailings Cells 2, 3 and 4A and a portion of Cell 1 used
for disposal of contaminated materials (the Cell 1 Disposal Area).
8.2 Materials Description
8.2.1 Random Fill
The random fill for the interim fill, compacted cover, and growth medium layers will consist of
on-site stockpiled soils from areas designated by the Owner. Random fill, except for the interim
fill, shall have a maximum particle size of 6 inches, and a minimum of 10 percent passing the
No. 200 sieve. Oversized material will be controlled through selective excavation at the
stockpiles and through the utilization of a grader, bulldozer or other equipment to cull or break
down oversized materials.
The source of these materials will be on-site stockpiles from previous cell construction activities.
On-site stockpiles shall be approved for specific use by the Construction Manager and Design
Engineer prior to use.
8.2.2 Organic Matter Amendment
Composted biosolids will be used to amend the physical and chemical properties of the random
fill used to construct the growth medium layer (Section 8.3.7). Composted biosolids will be
added to the upper 6 inches of the growth medium layer at a rate of 10 tons/acre.
8.2.3 Topsoil-Gravel Admixture
Gravel will be mixed with topsoil and placed on portions of the cover on Cells 2, 3, 4A, and 4B
top surfaces (as shown on the Drawings) as the erosion protection layer. Topsoil-gravel
admixture material shall be shall be free from roots, branches, rubbish, and debris.
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The gravel portion of the topsoil-gravel admixture will consist of granular materials from
approved off-site areas. The gravel portion of the topsoil-gravel admixture shall have a
maximum particle size of 1 inch.
The topsoil portion of the topsoil-gravel admixture will consist of select material from the on-site
topsoil borrow area (Section 3.4). The mixture shall be 25 percent gravel by weight.
8.2.4 Riprap
Riprap will be placed along the toe of the disposal cell and the tailings cells (as shown on the
Drawings). Riprap will consist of granular materials from approved off-site sources. Riprap
shall be shall be a screened product, free from roots, branches, rubbish, and debris.
Riprap shall meet NRC long-term durability requirements (a rock quality designation of 65 or
more; Johnson, 2002). For a rock quality designation of 70 or higher, the particle-size
specifications below shall be used. If actual rock quality designation is between 65 and 69,
oversizing will be required.
Designated gradations for the riprap will be as specified on the Drawings. Riprap will be
imported from off-site.
• Side Slope riprap shall have a minimum D50 as listed below and a minimum layer
thickness of 1.5 times the D50 or the D100 of the riprap, whichever is greater:
o 1.7 in. for non-accumulating flow side slopes
o 5.3 in. for Cell 4A and Cell 4B southern side slopes
o 5.3 in. for Cell 1 Disposal Area side slope
• Riprap used in the rock aprons shall have a minimum D50 as listed below and a minimum
layer thickness of 1.5 times the D50 or the D100 of the riprap, whichever is greater
o 3.4 in. for Rock Apron A
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o 10.6 in. for Rock Apron B
o 9.0 in. for Rock Apron C
8.2.5 Filter Material
Filter material shall be shall be free from roots, branches, rubbish, and debris. The filter material
shall meet the gradation specifications in Table 8.1.
Table 8.1 – Filter Material Gradation
Sieve Size Percent Passing,
By Weight
3-inch 100
No. 4 70-100
No. 20 40-60
No. 200 0-5

8.2.6 Topsoil
Topsoil will consist of select material from the designated, on-site topsoil borrow area (Section
3.4).
8.3 Work Description
The Contractor will place cover materials based on a schedule determined by the Owner and the
Owner’s analysis of settlement data, piezometer data and equipment mobility considerations.
Settlement monitoring points will be established and monitored in accordance with Sections
8.3.1 to 8.3.3 and the Settlement Monitoring Plan approved by DWMRC for the site.
Cover construction shall minimize lenses, pockets, or layers of material differing substantially in
texture, gradation or moisture content from the surrounding material. Oversized material will be
controlled through selective excavation of stockpiled material, observation of placement by a
qualified individual with authority to stop work and reject material being placed and by culling
oversized material from the fill.
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If the compacted surface of any layer of fill is too dry or smooth to bond properly with the layer
of material to be placed thereon, it will be moistened and/or reworked with suitable equipment to
a sufficient depth to provide relatively uniform moisture content and a satisfactory bonding
surface before the next succeeding layer of fill is placed. If the compacted surface of any layer
of fill in-place is too wet, due to precipitation, for proper compaction of the fill material to be
placed thereon, the material will be reworked to reduce the moisture content to the specified
range and recompacted.
No material will be placed when either the material being compacted, or the underlying material,
is frozen or when ambient temperatures do not permit the placement or compaction of the
materials to the specified density, without developing frost lenses in the fill.
8.3.1 Monitoring Interim Cover Settlement
The existing settlement monitoring points located within tailings disposal cells will be
maintained by extending them through additional fill placement. For areas without settlement
monitoring points, settlement monitoring points will be installed to monitor settlement of the
interim cover surface and will be constructed as specified in the DWMRC approved Settlement
Monitoring Plan. Settlement data will be collected and analyzed; and the reclamation techniques
and schedule will be adjusted accordingly.
8.3.2 Monitoring Final Cover Settlement
After placement of final cover material, settlement plates will be extended or will be installed to
monitor settlement of the final cover surface. The settlement plates will be constructed as
specified in the DWMRC approved Settlement Monitoring Plan.
8.3.3 Monitoring Settlement Points
Settlement monument placement and data collection will be made in accordance with the
DWMRC approved Settlement Monitoring Plan.
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8.3.4 Interim Fill Layer
The interim fill layer will have a minimum thickness of 2.5 feet and will be placed over the
tailings surface to form a stable working platform for subsequent controlled fill placement. This
interim fill layer will be placed by pushing random fill material across the tailings such that the
underlying tailings are displaced as little as possible. Interim fill will be placed in lifts of 12-inch
maximum loose thickness to form a uniform subsoil layer for the cover system. A rough surface
will be maintained on the surface of each lift.
8.3.5 Compacted Cover Layer
The compacted cover layer shall be constructed of random fill placed in lifts with a maximum
loose thickness of 12 inches to form a continuous layer with a total minimum compacted layer
thickness of 36 to 48 inches, as indicated in the Drawings. A rough surface will be maintained
on the surface of each lift.
8.3.6 Growth Medium Layer
The growth medium layer shall be constructed of random fill placed to a minimum of 42 inches
thick, above the compacted cover layer in lifts of 18-inch maximum loose thickness. If
oversized material is observed during the excavation of fill material, it will be removed, as far as
practicable, before it is placed in the fill. A rough surface will be maintained on the surface of
all but the uppermost lift.
8.3.7 Organic Matter Amendment
Composted biosolids will be applied prior to the placement of the erosion protection layer
(topsoil or the topsoil-gravel admixture). Composted biosolids will be uniformly spread over the
surface of the growth medium layer and mixed to a depth of 6 inches.
8.3.8 Erosion Protection Layer: Topsoil-Gravel Admixture
The topsoil and the gravel admixture shall be 75 percent topsoil - 25 percent gravel admixture
(by weight). The mixture shall be prepared (mixed) prior to transport to the placement areas.
Gradation samples will be collected at the point of placement to verify the mixture’s content.
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The CQA Site manager will approve the Contractor’s proposed method of mixing based on the
gradation results during initial placement.
The mixture shall be placed in one loose lift to form a uniform layer with a final thickness of 6
inches on the slope surfaces of the disposal cell (shown on the Drawings). The topsoil-gravel
admixture shall be spread with tracked equipment.
The erosion protection layer will not be amended for organic matter or nutrients to avoid the
stimulation of undesirable weedy species.
Following placement of the topsoil-gravel admixture erosion protection layer, the area shall be
harrowed to reduce any compaction that may have occurred during placement of the cover and to
create an uneven surface for optimum seedbed conditions.
8.3.9 Erosion Protection Layer: Topsoil
Topsoil (Section 8.2.6) shall be placed in one loose lift to form a uniform layer with a final
thickness of 6 inches on the top and side slope surfaces of the disposal cell (shown on the
Drawings). The topsoil shall be spread with tracked equipment.
The erosion protection layer will not be amended for organic matter or nutrients to avoid the
stimulation of undesirable weedy species.
Following placement of the topsoil layer, the area will be harrowed to reduce any compaction
that may have occurred during placement of the cover and to create an uneven surface for
optimum seedbed conditions.
8.3.10 Riprap and Filter Material Placement
The side slopes of the reclaimed cover will be protected by rock surfacing. Riprap (Section
8.2.4) and filter material (Section 8.2.5) shall be placed in one or more lifts to the depths outlined
in the Drawings and using the methods outlined below. The Drawings show the location of
riprap with the size and thickness requirements for the various side slopes and aprons.
Filter material and riprap shall be handled, loaded, transported, stockpiled, and placed in a
manner that minimizes segregation. Riprap and filter material shall be placed in or near its final
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location by dumping, then spread with a small dozer, the bucket of a trackhoe, or other suitable
equipment. Riprap and filter material shall be placed and spread in a manner that minimizes
displacement of underlying cover soils, natural soils, or filter material. Each layer of riprap and
filter material shall be track-walked with a small dozer, tamped with the bucket of a trackhoe, or
densified by other approved methods.
Placement of the riprap will avoid accumulation of riprap sizes less than the minimum D50 size
and nesting of the larger sized rock. The riprap layer will be compacted by at least two passes by
a dozer, tamping with the bucket of a trackhoe, or equivalent methods in order to key in the rock
particles for stability. The completed layer of filter material shall be well-graded in particle-size
distribution and free from pockets of smaller material and free from large voids or loose areas.
8.4 Performance Standard and Testing
8.4.1 Compacted Cover Layer Testing
Each lift of the compacted cover layer shall be compacted to at least 95 percent of the maximum
dry density for the material, as determined by the standard Proctor test (ASTM D698). Water
contents shall be adjusted, as needed, to meet the density requirements.
Material specifications for the random fill material shall be confirmed by gradation testing
conducted by approved personnel. Testing shall consist of No. 200 sieve wash and particle-size
distribution testing (ASTM D422) at a frequency of at least one test per 2,000 cubic yards of fill
placed, or when material characteristics show a significant variation.
Checking of compaction shall consist of a minimum of one field density test per 500 cubic yards
of material compacted. A minimum of two tests shall be taken for each day that more than 150
cubic yards of material is placed. A minimum of one test per lift and at least one test for every
full shift of compaction operations will be taken.
Field density tests shall be compared with standard Proctor tests (ASTM D698 Method A or C)
on the same material. Standard Proctor tests shall be conducted at a frequency of at least one test
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per 5,000 cubic yards of material compacted, or when material characteristics show significant
variation.
Field density testing may be conducted with the sand cone test (ASTM D1556) or a nuclear
density gauge (ASTM D6938, or as modified by the CQA Site Manager). Correlation of nuclear
density gauge results shall be by comparison with results from sand cone test(s) and laboratory
testing for water content(s) using the oven drying method (ASTM D2216) on similar material.
8.4.2 Growth Medium Layer Testing
Each lift of the growth medium layer shall be compacted to at least 85 percent of the maximum
dry density for the material, as determined by the standard Proctor test (ASTM D698). Water
contents shall be adjusted, as needed, to meet the density requirements.
Material specifications for the random fill for water storage layer shall be confirmed by gradation
testing conducted by approved personnel. Testing shall consist of No. 200 sieve wash and
particle-size distribution testing (ASTM D422) at a frequency of at least one test per 2,000 cubic
yards of fill placed, or when material characteristics show a significant variation.
The frequency of the field density tests will be not less than one test per 2,000 cubic yards of
compacted fill. A minimum of two tests will be taken for each day that more than 150 cubic
yards of material is placed. A minimum of one test per lift and at least one test for every full
shift of compaction operations will be taken.
Field density tests shall be compared with standard Proctor tests (ASTM D698 Method A or C)
on the same material. Standard Proctor tests shall be conducted at a frequency of at least one test
per 10,000 cubic yards of material compacted, or when material characteristics show significant
variation.
Field density testing may be conducted with the sand cone test (ASTM D1556) or a nuclear
density gauge (ASTM D6938, or as modified by the CQA Site Manager). Correlation of nuclear
density gauge results shall be by comparison with results from sand cone test(s) and laboratory
testing for water content(s) using the oven drying method (ASTM D2216) on similar material.
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8.4.3 Topsoil-Gravel Admixture Testing
The gradation specifications for the topsoil-gravel admixture (Section 8.2.3) shall be confirmed
by gradation testing, on samples collected from the point of placement (on the topdeck). Testing
shall consist of particle-size distribution testing (ASTM D422) at a frequency of at least one test
per 2,000 cubic yards of mixture placed, or when the characteristics of the mixture show a
significant variation. The CQA Site Manager may choose to increase the frequency of testing at
the beginning of placement to evaluate the mixing method proposed by the Contractor.
Topsoil-gravel admixture thickness will be controlled through the establishment of grade stakes
placed on a 200 x 200 foot grid on the top of the cells and by a 100 x 100 foot grid on the cell
slopes. Physical checks of topsoil-gravel admixture depth will be accomplished through the use
of hand dug test pits at the center of each grid in addition to monitoring the depth indicated on
the grade stakes.
8.4.4 Riprap Testing
Material specifications for the riprap shall be confirmed by gradation testing conducted by the
CQA Technician. Testing shall consist of particle-size distribution testing (ASTM D422) at a
frequency of at least one test per 2,000 cubic yards of rock delivered to the site, or when rock
characteristics show a significant variation.
Rock layer thickness will be controlled through the establishment of grade stakes placed on a
200 x 200 foot grid on the top of the cells and by a 100 x 100 foot grid on the cell slopes.
Physical checks of riprap depth will be accomplished through the use of hand dug test pits at the
center of each grid in addition to monitoring the depth indicated on the grade stakes.
The durability of the riprap shall be verified by durability tests outlined in Section 8.4.7.
8.4.5 Filter Material Testing
Material specifications for filter material (Section 8.2.5) shall be confirmed by gradation testing
conducted by CQA Technician. Testing shall consist of No. 200 sieve wash and maximum
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particle size testing (ASTM D422) at a frequency of at least one test per 10,000 cubic yards of
fill placed, or when material characteristics show a significant variation.
Filter layer thickness will be established during construction with grade stakes placed on a grid
or centerline and offset pattern and layer thickness marks on each grade stake. The minimum
thickness of the layer will be verified by spot checking of layer thickness by hand excavation in
selected locations.
8.4.6 Rock Durability Testing
For riprap materials, each load of material will be visually checked against standard piles for
gradation prior to transport to the tailings piles. Prior to delivery of any riprap materials to the
site, rock durability tests will be performed for each gradation to be used. Test series for riprap
durability will include specific gravity, absorption, sodium soundness and LA abrasion. During
construction, additional test series and gradations will be performed for each type of riprap when
approximately one-third (1/3) and two-thirds (2/3) of the total volume of each type have been
produced or delivered. For any type of riprap where the volume is greater than 30,000 cubic
yards, a test series and gradations will be performed for each additional 10,000 cubic yards of
riprap produced or delivered.
8.5 Surface Slopes and Grades
The final cover surface shall have maximum side slopes of 5:1 (H:V) and a top surface sloping in
the direction and grade shown on the Drawings. The side slopes and top surface shall be free
from abrupt changes in grade or areas of runoff concentration. The perimeter apron at the toe of
the side slopes shall have the dimensions as shown on the Drawings.
8.6 Grading Tolerances
The completed cover surface shall be constructed to within 1.0 foot (horizontally) of the lines as
designed, and within 0.1 foot (vertically) of the elevations as designed. The final surface of the
subsoil zone shall be smoothed to avoid abrupt changes in surface grade. The layer thicknesses
shall meet the required minimum thicknesses.
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The completed riprap shall be placed to within 5.0 foot (horizontally) of the layout as designed,
and within 0.5 foot (vertically) of the elevations as designed. The rock layer thicknesses shall
meet the minimum requirements.
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9.0 REVEGETATION
9.1 General
Following topsoil placement, the cover surface and other areas disturbed during reclamation
work will be revegetated. This section outlines the requirements for vegetation establishment
where required. This section may be revised as necessary based on field requirements and soil
nutrient analyses at the time of revegetation.
9.2 Materials Description
The soil amendments, seed mixture, and erosion control materials for revegetation are outlined
below. Submittals for each of the following products shall be provided to the Owner for approval
prior to use of such products.
9.2.1 Soil Amendments
The proposed application rate may be adjusted up or down based on soil chemical analysis that is
conducted prior to placement of the water storage layer.
Composted biosolids shall be added at a rate of 10 tons/acre and uniformly spread over the
surface of the water storage layer and mixed to a depth of 15 cm. This treatment will be applied
after the water storage layer is in-place and before placement of the erosion protection layer.
9.2.2 Seed Mix
Species selection for the seed mixture was based on native vegetation found in the area as well as
soil and climatic conditions of the Mill site. Changes to the seed mixture will be as approved by
the Owner. The seed mixture in Table 9.1 shall be used on all seeded areas.

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Table 9.1. Species and seeding rates proposed for Mill site.
Scientific Name Common Name Varietal
Name Native/
Introduced
Seeding Rate (lbs PLS/acre)†
Seeding Rate (# seeds/ft2)
Grasses
Pascopyrum smithii Western wheatgrass Arriba Native 3.0 7.9
Pseudoroegneria
spicata Bluebunch wheatgrass Goldar Native 3.0 9.6
Elymus trachycaulus Slender wheatgrass San Luis Native 2.0 6.2
Elymus lanceolatus Streambank wheatgrass Sodar Native 2.0 7.3
Elymus elymoides Squirreltail bottlebrush Toe Jam Native 2.0 8.8
Thinopyrum intermedium Pubescent wheatgrass Luna Introduced‡ 1.0 1.8
Achnatherum hymenoides Indian ricegrass Paloma Native 4.0 14.7
Poa secunda Sandberg bluegrass Canbar Native 0.5 11.4
Festuca ovina Sheep fescue Covar Introduced‡ 1.0 11.5
Bouteloua gracilis Blue grama Hachita Native 1.0 16.5
Hilaria jamesii Galleta Viva Native 2.0 7.3
Forbs
Achillea millefolium, variety occidentalis Common yarrow
VNS*
Native 0.5 32
Artemisia ludoviciana White sage VNS Native 0.5 45
Shrubs
Atriplex canescens Fourwing saltbush Wytana Native 3.0 3.4
Ericameria nauseosa Rubber rabbitbrush VNS Native 0.5 4.6
Total 26.5 188
†Seeding rate is for broadcast seed and presented as pounds of pure live seed per acre (lbs PLS/acre).
‡Introduced refers to species that have been ‘introduced’ from another geographic region, typically outside of North America. Also referred to as ‘exotic’ species.
*VNS=Variety Not Specified and seed source will be from sites that are climatically similar to White Mesa.
Seed shall be purchased as pounds of pure live seed and will be certified by the Utah State
Department of Agriculture and Food. Certification will verify that the seed is correctly identified
and genetically pure. Once the seed is obtained, seed labels will be checked to determine the
percent PLS and the date that the seed was tested for percent purity and percent germination. If
the test date is greater than 6 months old, the seed will be tested again before being accepted.
9.2.3 Erosion Control Materials
Wood fiber mulch will consist of specially prepared wood fibers and will not be produced from
recycled material such as sawdust, paper, cardboard, or residue from pulp and paper plants. The
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fibers will be dyed an appropriate color, with non-toxic, water-soluble dye to facilitate visual
metering during application. Wood-fiber mulch will be supplied in packages and each package
will be marked by the manufacturer to show the air-dry weight.
A tackifier will be used with the wood-fiber mulch to improve adhesion. The tackifier will be a
biodegradable organic formulation processed specifically for the adhesive binding of mulch. In
addition, the tackifier will uniformly disperse when mixed with water and will not be detrimental
to the homogeneous properties of the mulch slurry.
9.3 Work Description
Revegetation efforts shall be directed at all reclaimed and disturbed areas. The goal of the
revegetation plan is to ensure that a self-sustaining vegetative community is established.
9.4 Soil Amendment Application
Following final placement and grading of the frost barrier layer, amendments will be applied as
discussed in Section 9.2.1. Inorganic sources of nitrogen, phosphorus, and potassium will not be
applied to the soil because composted biosolids will provide all the macronutrients required for
long-term sustainability.
9.5 Growth Zone Preparation
A favorable seedbed shall be prepared on the topsoil layer or topsoil-rock mixture, prior to
seeding operations. The soil shall be loose and friable so as to maximize contact with the seed.
The soil will be tilled, following site contours with a disc or harrow (or similar approved
equipment) to a maximum depth of 6 inches. The depth of valleys and the height of ridges
caused by the final tillage operations are not to exceed 3 inches.
9.6 Seed Application
Seeding will follow the application of soil amendments and seedbed preparation, by broadcast
spreading method. This procedure will use a centrifugal type broadcaster (or similar implement),
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also called an end gate seeder. The broadcasters will have a minimum effective spreading width
of 20 feet. Seed will be applied in two separate passes. One-half of the seed will be spread in
one direction and the other half of seed will be spread in a perpendicular direction. This will
ensure that seed distribution across the site is highly uniform and also provide the opportunity to
adjust the seeding rate if the specified rate is not being achieved. Seeding will not occur if wind
speeds exceed 10 mph.
Immediately following seeding, the area will be lightly harrowed to provide seed coverage and to
maximize seed-soil contact. Broadcast seed shall be harrowed into the soil to a depth of 0.25 to
0.75 inches.
Seeding will take place as soon as practical after the cover system is in place. Successful seeding
in southeastern Utah can occur either in late fall (e.g. October) as a dormant seeding, with
germination and establishment occurring the following spring or can be conducted in June, prior
to the summer monsoon season. Timing for seeding will depend upon the construction schedule
for the cover system.
9.7 Erosion Control Material Application
Mulch will be applied immediately following seeding. A weed-free, wood-fiber mulch shall be
applied to the seeded area at a minimum rate of 1.5 tons/acre. The wood-fiber mulch will be
applied by means of hydraulic equipment that utilizes water as the carrying agent. A continuous
agitator action, that keeps the mulching material and approved additives in uniform suspension,
will be maintained throughout the distribution cycle.
The pump pressure will be capable of maintaining a continuous non-fluctuating stream of slurry.
The slurry distribution lines will be large enough to prevent stoppage and the discharge line will
be equipped with a set of hydraulic spray nozzles that will provide even distribution of the mulch
slurry to the seedbed. Mulching will not be done in the presence of free surface water resulting
from rains, melting snow, or other causes. Tackifier may be added either during the
manufacturing of the mulch or incorporated during mulch application.
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9.8 Performance Standard and Testing
The following section describes performance-based criteria for successful revegetation.
9.8.1 Seeding Rates
Prior to seeding, a known area will be covered with a tarp and seed will be distributed using the
broadcaster and simulating conditions that would exist under actual seeding conditions. Seed
will then be collected and weighed to determine actual seeding rate in terms of pounds per acre.
This process will be repeated until the specified seeding rate is obtained.
During the seeding process, the seeding rate will be verified at least once by comparing pounds
of seed applied to the size of the area seeded.
9.8.2 Erosion Control
The cover shall be inspected two times per year for eroded areas. Any area that has experienced
erosion shall be backfilled and reseeded. Erosion control materials shall also be reapplied over
reseeded areas.
9.8.3 Weed Control
Weed management will be conducted on the Mill site by identifying the presence of any noxious
weeds during annual vegetation surveys and developing a weed control plan that is specific to
the species that are present (Table 9.2). Noxious weed control is species-dependent and both
method and timing will vary from species to species.

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Table 9.2. Noxious weed species.
Scientific Name Common Name
Utah State—Listed Noxious Weeds
Acroptilon repens Russian knapweed
Cardaria spp. Whitetop (all species)
Carduus nutans Musk thistle
Centaurea diffusa Diffuse knapweed
Centaurea solstitialis Yellow star thistle
Centaurea stoebe ssp. micranthos Spotted knapweed
Centaurea virgate ssp. Squarrosa Squarrose knapweed
Cirsium arvense Canada thistle
Convolvulus spp. Bindweed (all species)
Cynodon dactylon Bermuda grass
Elymus repens Quackgrass
Euphorbia esula Leafy spurge
Isatis tinctoria Dyer’s woad
Lepidium latifolium Broadleaf pepperweed
Lythrum salicaria Purple loosestrife
Onopordum acanthium Scotch thistle
Sorghum almum Perennial sorghum (all species)
Taeniatherum caput-medusae Medusahead
San Juan County—Listed Noxious Weeds
Aegilops cylindrical Jointed goatgrass
Alhagi maurorum Camelthorn
Asclepias subverticillata Western whorled milkweed
Solanum elaeegnifolium Silverleaf nightshade
Solanum rostratum Buffalobur

Each survey will identify noxious weed populations and locate these populations on a map using
a set of symbols to identify species, size of the infestation, and density of the population. The
effectiveness of control methods will be documented in each annual survey. In addition,
immediately adjacent off-site properties will be visually surveyed to a distance of 100 feet.
Inspections will be conducted by personnel familiar with the identification of noxious weeds in
the area and based on Utah’s Noxious Weed List.
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The selected control methods will be based on the type, size, and location of the mapped noxious
weeds. The treated area(s) will be monitored and re-inspected annually for new weed
introductions and to evaluate the success of the control methods. Prevention is the highest
priority weed management practice on non-infested lands; therefore protecting weed-free plant
communities is the most economical and efficient land management practice. Prevention is best
accomplished by ensuring that new weed species seed or vegetative reproductive plant parts of
weeds are not introduced into new areas, and by early detection of any new weed species before
they begin to spread.

Control methods may include chemical or mechanical approaches. The optimum method or
methods for weed management vary depending on a number of site-specific variables such as
associated vegetation, weed type, stage of growth, and severity of the weed infestation.

Chemical Control
Chemical control consists mostly of selective and non-selective herbicides. Considerations for
chemical controls include: herbicide selection, timing of application, target weed, desirable plant
species being grown or that will be planted, number of applications per year and number of years
a particular species will need to be treated for desired control. Also important are the health and
safety factors involved, and the need to consider undesirable impacts. The use of herbicides will
be in compliance with all Federal and State laws on proper use, storage, and disposal. The
chemical application will be done by a licensed contractor in accordance with all applicable laws
and regulations and all label instructions will be strictly followed. Applications of herbicides
will not be permitted when the instructions on the herbicide label indicate conditions that are not
optimal.

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Mechanical Control
Mechanical control is the physical removal of weeds from the soil and includes tilling, mowing,
and pulling undesirable plant species. Tillage is most effective prior to seeding and establishment
of desirable vegetation. The tillage method of weed control can be effective in eliminating
noxious perennial weeds when repeated at short intervals (every 1-2 weeks) throughout the
growing season. Tillage has the drawback of indiscriminately impacting all vegetation
interspersed with weeds in established areas and can eliminate competitive, desirable vegetation
leaving behind a prime seedbed for weeds to reinvade. Mowing can be an effective method for
controlling the spread of an infestation and preventing the formation and dispersal of seeds.
Mowing is most effective on weeds which spread solely or primarily by seed. In order to achieve
this, mowing must be repeated at least twice during the growing season prior to, or shortly after
bloom. Also, even the most intense mowing treatment will not kill hardy perennial weeds.
Additional considerations will be made when selecting control treatments when specific
situations arise regarding type, size, and location of weed infestations. Examples of this are
perennial versus biennial, broadleaf versus grasses, noxious weeds interspersed with desirable
vegetation, large monoculture patches, or small patches requiring spot treatment.

Treatment windows schedules, based on the control methods chosen and the noxious weeds
present, will be established for each treatment area. The best time to treat perennial noxious
weeds is in the spring or fall during their active growth phase. Different species will have
different optimum treatment times even with the same type of control. Perennial weeds usually
grow vegetatively in the spring, flower and seed in late spring and early summer, enter dormancy
during the summer and actively grow again in the fall. The treatment windows selected will
depend on the species present and control methods selected.

The final preparatory step is to determine the priority for areas to be treated. Prioritization
ensures that the most important areas are dealt with at the most effective times. Important areas
of concern include areas that may transport weed seeds. These areas include ditches, roadsides,
and land equipment storage sites. Large monoculture patches are of concern wherever they occur
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and will always be high priority. Also, small patches of weeds will be treated to prevent
expansion of weed populations.

Once the treatment plan is implemented, detailed records will be kept, and success or failure of
treatment will be recorded so as to eliminate unsuccessful treatments.

9.8.4 Vegetation Establishment Performance
The following Revegetation Acceptance Goals/Criteria have been adapted from the Monticello
Site and will be used at the Mill site to determine reclamation success.
Revegetation Acceptance Goal/Criteria:
Criterion 1 Species Composition
a. The vegetative cover (the percentage of ground surface covered by live plants) shall
be composed of a minimum of five perennial grass species (at least four listed as
native), one perennial forb species, and two shrub species listed in Table 9.1.
Criterion 2 Vegetative Cover
a. Attain a minimum vegetative cover percentage of 40 percent.
b. Individual grass and forb species listed in Table 9.1 that are used to achieve the cover
criteria shall have a minimum relative cover (the cover of a plant species expressed as
a percentage of total vegetative cover) of 4 percent and a maximum relative cover of
40 percent.
c. Individual species not listed in Table 9.1 may be accepted as part of the cover criteria
if it is demonstrated that the species is native or adapted to the area and is a desirable
component of the reclaimed project site.
d. Species not listed in Table 9.1, including annual weeds or other undesirable species
such as those listed in Table 9.2, shall not count toward the minimum vegetative
cover requirement. Every attempt shall be made to minimize establishment of all
noxious weeds.
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e. Reclaimed areas shall be free of state- and county-listed noxious weeds (Table 9.2).
f. The vegetative cover shall be self-regenerating and permanent. Self-regeneration shall
be demonstrated by evidence of reproduction, such as tillers and seed production.

Criterion 3 Shrub Density
a. A minimum shrub density of 500 stems per acre.
b. Shrubs shall be healthy and have survived at least two complete growing seasons
before being evaluated against success criteria.

Plant cover will be measured annually on the tailing cells for a minimum of ten years or until the
revegetation goals stated above are achieved. Cover will be measured by the point method,
using a vegetation sighting scope mounted on an adjustable tripod with a level. Cover will be
measured for each species encountered, as well as litter, rock, and bareground. Cover
measurements will be made along a minimum of ten randomly placed transects on each tailing
cell that are 100 feet long. A total of 100 points will be sited at one-foot intervals along each
transect to collect cover data in the categories of live vegetation, litter, rock, and bareground.
Sample adequacy will be determined for each tailing cell using the following formula that
identifies the minimum number of samples that are necessary to estimate the population mean at
a 90 percent level of confidence. Total live vegetation cover will be used to calculate sample
adequacy.

n = t2s2
(.10x)2

Where: n = minimum number of samples required to meet sample adequacy requirements
s2 = variance
t2 = 1.64 for 90% confidence
x = sample mean

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Shrub density will be measured in belt transects placed on either side of the cover transects. All
shrubs will be counted within a three-foot wide strip or belt transect along each side of the
transect used for point cover measurements, resulting in a belt transect that is six-feet wide and
100 feet long.

In addition to the above cover sampling, annual observations will be made of overall plant
community health and sustainability. Overall health will be based on plant vigor, presence of
annual weeds, and signs of plant deficiencies or toxicities. Plant community sustainability will
be based on observations of reproduction, including both vegetative reproduction, such as
tillering, and seed production.

If revegetated areas are not making satisfactory progress in meeting revegetation goals outlined
above, then remedial actions will be implemented as needed. These actions may include
fertilization/soil amendments, reseeding, weed control, and/or erosion control depending upon
the cause of the problem that may exist and the best remediation approach to ensure plant
community success.
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10.0 REFERENCES
American National Standards Institute (ANSI) 1997. ANSI N323A American National Standard
Calibration Standard Radiation Protection Instrumentation Test and Calibration, Portable
Survey Instruments.
Denison Mines (USA) Corp. 2009. Reclamation Plan White Mesa mill, Blanding Utah, Rev. 4.
November.
Johnson, T.L., 1999. “Design of Protective Covers.” U.S. Nuclear Regulatory Commission
(NRC), NUREG 2615 Draft for Comment. February.
Johnson, T.L., 2002. “Design of Erosion Protection for Long-Term Stabilization.” U.S. Nuclear
Regulatory Commission (NRC), NUREG 1623, Final Report. September.
National Oceanic and Atmospheric Administration (NOAA), 1977. Probable Maximum
Precipitation Estimates, Colorado River and Great Basin Drainages. Hydrometerological
Report (HMR) No. 49.
SENES 2012. Letter to J.A. Tischler, Energy Fuels Resources, Inc. Radium Benchmark Dose
Approach. August 15, 2012, as provided in EFRI Responses to Utah DRC
Interrogatories Round 1. August 2012.
United States Nuclear Regulatory Commission (NRC), 1990. “Final Staff Technical Position,
Design of Erosion Protective Covers for Stabilization of Uranium mill Tailings Sites.”
January.
United States Nuclear Regulatory Commission (NRC) 2000. Multi-Agency Radiation Survey
and Site Investigation Manual. NUREG-1575. August.
United States Nuclear Regulatory Commission (NRC). 2003. NUREG 1569, Appendix E,
Guidance to the U.S. Nuclear Regulatory Commission Staff on the Radium Benchmark
Dose Approach.
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United States Nuclear Regulatory Commission (NRC). 2006 NUREG 1757 Volume 2,
Consolidated Decommissioning Guidance, Characterization, Survey, and Determination
of Radiological Criteria. Revision 1.
United States Nuclear Regulatory Commission (NRC). 2009 NUREG 1575 Supplement 1,
Multi-Agency Radiation Survey and Assessment of Materials and Equipment Manual.
Yu, C., Zielen, A.J., Cheng, J-J, Le Poire, D.J., Gnanapragasam, E., Kamboj, S., Arnish, J.,
Wallo III, A., Williams, W.A., and Peterson, H., 2001. User’s Manual for RESRAD
Version 6. ANL/EAD-4. July.

August 2016

Exhibit A-1:
Daily QA/QC Checks

August 2016
1.0 INTRODUCTION
A background count rate and reliability check using a check source shall be performed daily,
prior to use, when the detector/scaler is used for counting. Background count rates and source
checks shall be input on a control chart after developing of the mean and standard deviation
(sigma) as discussed below.
2.0 QC CONTROL CHARTING
Select a background location such as an office or other location where background gamma
radiation gamma values are not expected to vary. Take ten 30-second count readings and record
them on Form 1. Using the ten readings, calculate the mean, sigma, and 2 sigma). These results
shall also be recorded on Form 1.
Daily, prior to use, and at the end of surveys, perform a 30-second background and source count
at the same location and in the same configuration as the acceptable ranges were developed. If
the background or source check result exceeds a difference of two standard deviations, (2s or 2
sigma) from the mean, as shown on Figure 2, the Instrument Control Chart, re-count the
background or source, log the results, and enter the new data on the Instrument Control Chart.
Two successive background or source check counts outside the 2s Instrument Control Chart
range indicates possible problems with the detector/electronics.
Values between ± 2s of the mean net counts generally indicate normal operation of the
instrument. Values outside the mean ± 2s will occur with a frequency of less than 5 percent.
Values greater than 3s from the mean will occur with a frequency of less than one percent and
should be investigated. Two consecutive measurements outside 3s indicate problems with
equipment and require adjustments and/or repairs as necessary. The scaler shall be removed
from service and immediate notification shall be made to the RSO or designee prior to counting
any samples.
Calibrations shall be checked whenever a significant change or repair is made to the
measurement system, or when changes are detected as a result of check source measurements.

August 2016
Control charts shall be maintained to indicate instrument operability and/or malfunction
problems on a daily basis when instruments are in use. Use the attached control chart. Control
charts should be kept for both background counts and counts with a check source, such as a 5
µCi Cs-137 source.

August 2016

FORM 1: CALCULATION OF INSTRUMENT STANDARD DEVIATION
Date of 1st Instrument
Use Co
u
n
t

1

Co
u
n
t

2

Co
u
n
t

3

Co
u
n
t

4

Co
u
n
t

5

Co
u
n
t

6

Co
u
n
t

7

Co
u
n
t

8

Co
u
n
t

9

Co
u
n
t

1
0
Sample Mean
(λ)
Sample Standard
Deviation
(σ)
Lower Control
Limit
(λ-2s)
Upper Control Limit
(λ+2s)

Where σ is the standard deviation,
λ is the mean of the counts, and n
is the 30 second count rate 𝑠𝑠=�∑(𝑈𝑈𝑖𝑖−𝜆𝜆)𝑚𝑚𝑖𝑖=1 9
Where λ is the mean of the
counts, and n is the 30
second count rate 𝜆𝜆= 110 �𝑈𝑈𝑖𝑖10
𝑖𝑖=1

August 2016

FORM 2: INSTRUMENT CONTROL CHART
Initials Date
Co
u
n
t
Sample
Mean (λ)
Sample
Standard
Deviation (s)
Lower
Control
Limit (λ-2s)
Upper
Control
Limit (λ+2s) Pa
s
s
?

Y or N
Y or N
Y or N
Y or N
Y or N
Y or N
Y or N
Y or N
Y or N
Y or N
Y or N
Y or N
Y or N
Y or N
Y or N
Y or N
Y or N
Y or N
Y or N
Y or N
Y or N
Y or N
Y or N
Y or N
Y or N
Y or N
Y or N
Y or N