DRC-2023-069108 - 0901a0688124a8b8

YA~
~~NERGYFUELS
July 27, 2023
VIA EXPRESS DELIVERY
Mr. Doug Hansen
Director
Div of Wast? Manage..,.,ent
ard Rad, t1or1 Control
AUo O 1 2023
Division of Waste Management and Radiation Control
Utah Department of Environmental Quality
195 North 1950 West
Salt Lake City, UT 84116
Energy fuels Resources (USA) Inc.
225 Union Blvd. Suite 600
Lakewood, CO, US, 80228
303 974 2140
W\\ \\ .energ, f"uels.com
Re: Transmittal of DMT Performance Standards Monitoring Report and Cell 4A BAT
Performance Standards Monitoring Report for the 2nd Quarter of 2023
Dear Mr. Hansen:
Enclosed please find two copies of the DMT Performance Standards Monitoring Report and Cell 4A
BAT Performance Standards Monitoring Report for the 2nd Quarter of 2023, as required under Parts
I.F.2 and I.F.3 of the White Mesa Mill's State of Utah Groundwater Discharge Permit No.
UGW370004. Also enclosed are two CDs, each with an electronic word-searchable copy of the
enclosed Report.
If you have any questions regarding this Report, please contact the undersigned at [phone] or
Mr. Garrin Palmer at [phone].
Yours very truly,
-1!,4&~
ENERGY FUELS RESOURCES (USA) INC.
Kathy Weinel
Director, Regulatory Compliance
cc David Frydenlund
Garrin Palmer
Logan Shumway
Scott Bakken
DRC-2023-069108
July 27, 2023
VIA EXPRESS DELIVERY
Mr. Doug Hansen
Director
Division of Waste Management and Radiation Control
Utah Department of Environmental Quality
195 North 1950 West
Salt Lake City, UT 84116
Energy Fuels Resources (USA) Inc.
225 Union Blvd. Suite 600
Lakewood, CO, US, 80228
303 974 2140
www.energyfuels.com
Re: Transmittal of DMT Performance Standards Monitoring Report and Cell 4A BAT
Performance Standards Monitoring Report for the 2nd Quarter of 2023
Dear Mr. Hansen:
Enclosed please find two copies of the DMT Performance Standards Monitoring Report and Cell 4A
BAT Performance Standards Monitoring Report for the 2nd Quarter of 2023, as required under Parts
I.F.2 and I.F.3 of the White Mesa Mill's State of Utah Groundwater Discharge Permit No.
UGW370004. Also enclosed are two CDs, each with an electronic word-searchable copy of the
enclosed Report.
If you have any questions regarding this Report, please contact the undersigned at (3 03) 3 89-4134 or
Mr. Garrin Palmer at [phone].
Yours very truly,
-1!,4 &µ,J
ENERGY FUELS RESOURCES (USA) INC.
Kathy Weinel
Director, Regulatory Compliance
cc David Frydenlund
Garrin Palmer
Logan Shumway
Scott Bakken
WHITE MESA URANIUM MILL
DMT PERFORMANCE STANDARDS MONITORING REPORT AND CELL 4A AND
CELL 4B BAT PERFORMANCE STANDARDS MONITORING REPORT
2nd Quarter
April through June
2023
State of Utah
Groundwater Discharge Permit No. UGW370004
Prepared By:
Energy Fuels Resources (USA) Inc.
225 Union Boulevard, Suite 600
Lakewood, CO. 80228
July 26, 2023
TABLE OF CONTENTS
1.0 INTRODUCTION ......................................................................................................................................... 1
2.0 MEASUREMENTS TAKEN AND MONITORING PERFORMED ....................................................... !
3.0 WEEKLY TAILINGS WASTEWATER POOL ELEVATION MONITORING .................................. 2
4.0 QUARTERLY SLIMES DRAIN WATER LEVEL MONITORING ...................................................... 3
4.1 GENERAL ...................................................................................................................................................... 3
4.2 RESULTS FOR THE QUARTER ......................................................................................................................... 4
4.3 QUALITY ASSURANCE EVALUATION AND DATA VALIDATION ..................................................................... 4
4.4 GRAPHIC COMPARISON TO PREVIOUS YEAR ................................................................................................. 5
5.0 WEEKLY FEEDSTOCK STORAGE AREA INSPECTIONS AND INSPECTIONS OF
FEEDSTOCK MATERIAL STORED OUTSIDE THE FEEDSTOCK STORAGE AREA ................. 5
6.0 TAILINGS CELLS AND POND LINER SYSTEM REPAIRS ................................................................ 5
7.0 DECONTAMINATION PADS .................................................................................................................... 6
7.1 SUMMARY OF WEEKLY INSPECTIONS ........................................................................................................... 6
7.2 ANNUAL INSPECTION OF EXISTING DECONTAMINATION PAD ....................................................................... 6
7 .3 ANNUAL INSPECTION OF NEW DECONTAMINATION PAD .............................................................................. 7
7.4 ANNUAL INSPECTION OF USED OIL AND FUEL TANKS .................................................................................. 7
7.5 ANNUAL INSPECTION OF HYDROCHLORIC ACID ("HCL") TANKS ................................................................. 7
8.0 AMMONIUM SULFATE PAD ................................................................................................................... 7
9.0 CELL 4A AND CELL 4B BAT PERFORMANCE STANDARDS REPORT ......................................... 7
9 .1 LDS MONITORING ........................................................................................................................................ 8
9. 1 .1 Operational Status of LDS Pumping and Monitoring Equipment.. ......................................................... 8
9. 1.2 Measurement of Weekly Fluid Head at the Lowest Point in the Secondary FML ................................... 8
9.1.3 Measurement of the Volume of Fluids Pumped from the LDS ................................................................. 8
9 .2 MEASUREMENT OF WEEKLY WASTEWATER FLUIDS IN CELLS 4A AND 4B .................................................. 9
9.3 SLIMES DRAIN RECOVERY HEAD MONITORING ......................................................................................... 10
10.0 CELL 1, CELL 2, AND CELL 3 LDS MONITORING ......................................................................... 10
10.1 OPERATIONAL STATUS OF LDS PUMPING AND MONITORING EQUIPMENT ................................................. 10
10.2 MEASUREMENT OF THE VOLUME OF FLUIDS PUMPED FROM THE LDS ....................................................... 10
10.3 MEASUREMENT OF WEEKLY WASTEWATER FLUIDS IN CELLS 1, 2, AND3 ................................................. 11
10.4 SLIMES DRAIN RECOVERY HEAD MONITORING ......................................................................................... 11
11.0 ANNUAL SLIMES DRAIN RECOVERY HEAD REPORT .................................................................. 11
12.0 QUARTERLY PRECIPITATION DATA ................................................................................................ 11
13.0 SIGNATURE AND CERTIFICATION .................................................................................................... 12
1
LIST OF TABLES
Table 1 -Summary of Waste Water Pool Elevations (In the Text)
Table 2 -New Decontamination Pad Inspection Portal Level (In the Text)
ATTACHMENTS
A Tailings Cell Wastewater Elevations
B Notices Pursuant to Part I.G.3 of the GWDP
C Quarterly Cell 2 Slimes Drain Monitoring Data
D Graph of Cell 2 Slimes Drain Water Levels Over Time
E Cell Liner Repair Reports and Notices
F Cell 4A and Cell 4B Leak Detection System Data for the Quarter and BAT O&M Plan
Tables lA and lB, Cell 4A and 4B Calculations
G Annual Inspection Forms for Existing and New Decontamination Pads and Ammonium
Sulfate Area
H Weekly Feedstock Inspection Form -Feedstock Maps
I Quarterly Precipitation Data
11
WHITE MESA URANIUM MILL
DMT PERFORMANCE STANDARDS MONITORING REPORT AND CELL 4A AND
CELL 4B BAT PERFORMANCE STANDARDS MONITORING REPORTS
FOR THE 2ND QUARTER OF 2023
1.0 INTRODUCTION
This is the routine Discharge Minimization Technology ("DMT") Performance Standards
Monitoring Report for the second quarter of 2023 (the "quarter") prepared by Energy Fuels
Resources (USA) Inc. ("EFRI"), as required under Part I.F.2 of the White Mesa Mill's (the
"Mill's") State of Utah Groundwater Discharge Permit No. UGW370004 (the "GWDP"), and the
Routine Cell 4A and Cell 4B Best Available Technology ("BAT") Performance Standards
Monitoring Reports for the quarter, as required under Part I.F.3 of the GWDP.
2.0 MEASUREMENTS TAKEN AND MONITORING PERFORMED
During the quarter, the following DMT monitoring was performed or addressed, as required
under Part I.D.3, I.E.7, and I.F.11 of the GWDP:
• Weekly tailings wastewater pool elevations for tailings Cells 1 and 3 (Part
I.E.7(a));
• Quarterly slimes drain water levels in Cell 2 (Part I.D.3(b)(2));
• Annual Slimes Drain Compliance (Part I.D.3 (b) (3) and I.F.11);
• Weekly feedstock storage area inspections and inspections of feedstock materials
stored outside of the feedstock storage area (Part I.D.3(f) and Parts I.E.7(d); and
(e));
• Any tailings cell and pond liner system repairs (Part I.E.7 (f) and Part I.E.(8)(c));
• Weekly New Decontamination Pad Inspection (Part I.E.7 (g)) and
• Annual Decontamination Pad Concrete Inspection (Part I.F .11) (not required this
reporting period)
Also during the quarter, the following Cell 4A and 4B BAT performance standards monitoring
was performed, or addressed, as applicable and as required by Parts I.E. 8 and I.E.12 of the
GWDP:
• Leak detection system ("LDS") monitoring for Cell 4A (Part I.E.8.(a)), and Cell
4B (Part 1.E.12); and
• Weekly tailings wastewater pool elevations for tailings Cell 4A (Part I.E.8 (a))
and Cell 4B (Part I.E.12).
During the quarter, the following inspections were also completed:
• LDS monitoring for Cells 1, 2 and 3 pursuant to the Mill's State of Utah
Radioactive Materials License No. UT 19004 79 (the "License") (Part 11.3 ).
1
3.0 WEEKLY TAILINGS WASTEWATER POOL ELEVATION MONITORING
Mill personnel monitored and recorded weekly the elevation of wastewater in the Mill's tailings
cells during this quarter, to ensure compliance with the maximum wastewater elevation criteria
mandated by Parts I.E.7(a)2 and I.E.12(a) of the GWDP. The results of such monitoring,
reported as feet above mean sea level ("fmsl"), are included in Attachment A. Part I.D.2 of the
GWDP provides that under no circumstances shall the freeboard of any tailings cell be less than
three feet, as measured from the top of the flexible membrane liner ("FML"). The top of the
FML in Cell 1 is at 5,618.5 fmsl, and the top of the FML in Cell 4B is 5600.4 fmsl. This means
that the maximum wastewater pool elevations in Cells 1 and 4B permitted under Part I.D.2 of the
GWDP are 5,615.50, and 5,597.40 finsl, respectively.
The maximum wastewater pool elevations in Cells 1 and 4B, as measured during the quarter, are
summarized in the following Table 1. The requirements to meet freeboard elevation limits in
Cell 3 and Cell 4A were eliminated. The solution elevation measurements in Cell 4A are not
required for compliance with freeboard limits but are required for the calculation of the daily
allowable volume of fluids pumped from Cell 4A LDS and are collected for this purpose. The
freeboard limits established by the GWDP and the License are slightly different; accordingly, the
stricter of the two limits represents the regulatory standard for each cell. As indicated in Table 1,
the applicable freeboard limits were not exceeded during the Quarter for any cell.
Table 1-Summary of Waste Water Pool Elevations
Tailings Maximum Maximum Maximum
Cell Wastewater Elevation Wastewater Elevation Wastewater
Measured During the Permitted Under Elevation Permitted
Quarter (fmsl) License Condition Under Part I.D.2 of
10.3 (fms1) the GWDP (fmsl)
Cell 1 5614.54 5,615.40 5,615.50
Cell 3 Not Measured-No Limit No Limit
freeboard limit was (5,602.50*) (5,605.50*)
removed in QI 2011
Cell 4A 5588.01 -freeboard No Limit No Limit
limit was removed in (5,593.74**) (5,595.50**)
Ql 2011.
Cell 4B 5579.10 5594.60 5597.40
* The Director approved the removal of the Cell 3 freeboard limit and authorized the use of Cell 4B on January 27,
2011. Cell 3 is nearly full of solids.
** The Director granted a variance from the Cell 4A freeboard limit on January 13, 2011, and approved the removal
of the Cell 4A limit and authorized the use of Cell 4B on January 27, 2011. The previous freeboard limit noted
above for Cell 4A was not set out in the License. The freeboard limit of 5,593.74 for Cell 4A was set out in a letter
from the Director dated November 20, 2008. The approved DMT Plan, Revision 11 .1 dated January 2011, included
the removal of the freeboard limit for Cell 4A to be replaced by a freeboard limit for Cell 4B that will accommodate
the freeboard requirements of Cells 1, 4A, and 4B.
2
4.0 QUARTERLY SLIMES DRAIN WATER LEVEL MONITORING
4.1 General
Part I.D.3(b )(1) of the GWDP provides that the Permittee shall at all times maintain the average
wastewater recovery head in the slimes drain access pipes of each of Cells 2 and 3 to be as low
as reasonably achievable, in accordance with the DMT Plan. Part I.E.7(b)(5) of the GWDP
provides that for Cell 3, this requirement shall apply after initiation of dewatering operations.
Part I.D.6(c) of the GWDP provides that, after the Permittee initiates pumping conditions in the
slimes drain layer in Cell 4A, the Permittee will provide: 1) continuous declining fluid heads in
the slimes drain layer, in a manner equivalent to the requirements found in Part I.D.3(b), and 2) a
maximum head of 1.0 feet in the tailings (as measured from the lowest point of the upper FML)
in 6.4 years or less. Similarly, Part I.D.13(c) of the GWDP provides that, after the Permittee
initiates pumping conditions in the slimes drain layer in Cell 4B, the Permittee will provide: 1)
continuous declining fluid heads in the slimes drain layer in a manner equivalent to the
requirements found in Part I.D.3(b), and 2) a maximum head of 1.0 feet in the tailings (as
measured from the lowest point of the upper FML) in 5.5 years or less.
The GWDP, Part I.D.3(b)(l) states the "Permittee shall at all times maintain the average
wastewater recovery head in the slimes drain access pipe to be as low as reasonably
achievable ... " Part I.D.3(b)(2) states the "effective July 11, 2011, the Permittee shall conduct a
quarterly slimes drain recovery test ... ". Monthly testing was conducted through the second
quarter of 2011. The frequency change dictated by the GWDP was implemented in the third
quarter 2011. The test ensures that each tailings cell meets the following minimum requirements:
1) includes a duration of at least 90-hours, as measured from the time that pumping ceases, and
2) achieves a stable water level at the end of the test, as measured by three consecutive hourly
water level depth measurements with no change in water level, as measured to the nearest 0.01
foot.
The GWDP, Part I.E.7(b) requires quarterly monitoring of all slimes drain access pipes in
accordance with I.D.3 as noted above. In addition, for the purposes of monitoring the slimes
drain access pipes, the GWDP Part I.E.7(b) requires: 1) perform at least 1 separate slimes drain
recovery test at each disposal cell in each quarterly period of each calendar year that meets the
requirements of Part I.D.3 (upon commencement of dewatering operations), 2) designate,
operate, maintain and preserve one water level measuring point of each slimes drain access pipe
that has been surveyed by a Utah licensed engineer or land surveyor (upon commencement of
dewatering operations), 3) make all slimes drain recovery head test (depth to fluid)
measurements from the same designated measuring point, and 4) record and report all fluid depth
measurements to the nearest 0.01 foot.
At this time, dewatering operations have not commenced in Cell 3, Cell 4A, or Cell 4B. As a
result, the requirements in Part I.E.7(b) to monitor and record monthly the depth to wastewater in
the slimes drain access pipes as described in Part I.D.3 of the GWDP apply only to Cell 2 at this
time. Accordingly, this Report is limited to slimes drain recovery head information relating to
Cell 2 only.
3
Pursuant to Parts the I.F.2 of the GWDP, Section 7.1 of the DMT Plan and correspondence from
the Division of Waste Management and Radiation Control ("DWMRC"), dated February 7,
2008, the results of quarterly recovery monitoring of the slimes drain for Cell 2 are to be
recorded and included with the results of quarterly monitoring in the quarterly White Mesa Mill
DMT Performance Standards Monitoring Report and Cell 4A and Cell 4B BAT Performance
Standards Monitoring Reports (the "DMT Reports"). Further, beginning in 2008, quarterly
DMT Reports must include both the current year values and a graphic comparison to the
previous year. The annual slimes drain recovery head report for 2022 was included in Section 11
of the 4th Quarter 2022 DMT Report, which was submitted on January 27, 2023. The annual
slimes drain report for 2023 will be submitted with the 4th Quarter 2023 DMT Report, which
will be submitted on or before March 1, 2024.
4.2 Results for the Quarter
In accordance with the requirements described above, the quarterly slimes drain recovery head
monitoring data for the quarter, which includes the date and time for the start and end of the
recovery test, the initial water level, and the final depth to stable water level for the quarter, are
included as Attachment C to this Report. All measurements were made from the designated fluid
measuring point. The fluid level measuring point was surveyed by a licensed Utah land surveyor
in Q3 2017 after the extension of the slimes drain access pipe. The extension of the slimes drain
access pipe was required due to the Cell 2 cover activities.
Cell 2 Phase 1 cover placement/construction commenced in April 2016. The Phase 1 cover
activities include the placement and compaction of approximately 4.5 feet of soil materials.
These cover placement activities have caused an increase in the measured elevations of the Cell
2 slimes drain fluids. The increased elevations are due to excess pressure from surcharge as a
result of cover activities. The increase in elevations was expected and is unavoidable during
cover construction activities. Cover construction activities included the installation of a series of
piezometers across Cell 2. Fluid levels are monitored and recorded in the piezometers. Initially,
fluid measurements in the piezometers were conducted weekly. After the completion of the
Phase 1 activities, the fluid measurements were conducted monthly. The data as well as monthly
contours of the fluid levels are included in Tab C. The data indicate that the increase in fluid
levels in Cell 2 is directly related to the placement of fill and cover construction activities.
The slimes drain pump in Cell 2 is activated and deactivated by a float mechanism and water
level probe system. When the water level reaches the level of the float mechanism, the pump is
activated. Pumping then occurs until the solution level reaches the lower probe, which turns the
pump off. It is important to note that because of the added cover materials and the increase in
solution elevations, additional volumes of solutions have been pumped since the commencement
of cover activities began.
4.3 Quality Assurance Evaluation and Data Validation
EFRI management has evaluated all slimes drain data collected, data collection methods, and all
related calculations required by the GWDP, and have verified the accuracy and reliability of both
the data and calculations reported.
4
As a result of its quality assurance evaluation and data validation review, EFRJ has concluded
that the 2009, and 2010 monthly slimes drain tailings fluid elevation measurements, the 2011
monthly (through June) and quarterly (July forward), and the quarterly 2012, 2013, 2014, 2015,
2016, 2017, 2018, 2019, 2020, 2021, 2022 and 2023 slimes drain tailings fluid elevation
measurements to date meet the test performance standards found in Part I.D.3(b)(2) and I.E.7(b)
of the GWDP and can be used for purposes of determining compliance with the requirements of
Part I.D.3(b) of the GWDP.
4.4 Graphic Comparison to Previous Year
A graph showing the final depth to stable water level readings for 2009 through the current 2023
period is included as Attachment D.
5.0 WEEKLY FEEDSTOCK STORAGE AREA INSPECTIONS AND INSPECTIONS
OF FEEDSTOCK MATERIAL STORED OUTSIDE THE FEEDSTOCK STORAGE
AREA
Weekly feedstock storage area inspections were performed by the Mill's Radiation Safety
Department, to confirm that the bulk feedstock materials are stored and maintained within the
defined area described in the GWDP and that all alternate feedstock located outside the defined
feedstock area is maintained in compliance with the requirements of Part I.D.11 of the
GWDP. The results of these inspections are recorded on the Weekly Mill Inspection forms,
which are available at the Mill for inspection.
In the closeout letter for the first quarter 2013 DMT Report, dated July 23, 2013, DWMRC
wrote, "EFRJ noted standing water in one of the feedstock storage areas. Language in the report
referred to the standing water as a "small amount." The DWMRC requests that in future
quarterly reports, EFRI be more complete in quantifying and describing the location of standing
water discovered in feedstock storage areas." To comply with this request, EFRJ has attached
the Feedstock Storage Area Maps ("Feedstock Maps") completed during the weekly Feedstock
Storage Area inspections as Attachment H. When present, the Feedstock Maps will include the
areal extent (in feet) and depth (in inches) of any standing water noted during the weekly
inspections. During the quarter, no standing water was noted.
6.0 TAILINGS CELLS AND POND LINER SYSTEM REPAIRS
The liner systems at Cells 1, 2, 3, 4A, and 4B were inspected on a daily basis. The results of
those inspections are recorded on the Mill's Daily Inspection Data sheets, which are available at
the Mill for review.
5
7.0 DECONTAMINATIONPADS
7.1 Summary of Weekly Inspections
Part I.E.7 (f) of the GWDP and Section 3.1 of the DMT Plan require that a weekly inspection of
the New Decontamination Pad be performed, and that the vertical inspection portals on the New
Decontamination Pad, which are located between the primary and secondary containments, be
visually observed on a weekly basis as a means of detecting any leakage from the primary
containment into the void between the primary and secondary containments. The BAT
performance standards for the New Decontamination Pad are set out in Part I.D.14 of the
GWDP. Table 2 below indicates the water level measurements in each portal measured during
the quarter.
Table 2 -New Decontamination Pad Inspection Portal Level for the Quarter
Date Portal 1 Portal 2 Portal 3
Liquid Level (ft.) Liquid Level (ft.) Liquid Level (ft.)
4/7/2023 0.00 0.00 0.00
4/14/2023 0.00 0.00 0.00
4/21/2023 0.00 0.00 0.00
4/28/2023 0.00 0.00 0.00
5/5/2023 0.00 0.00 0.00
5/12/2023 0.00 0.00 0.00
5/19/2023 0.00 0.00 0.00
5/26/2023 0.00 0.00 0.00
6/2/2023 0.00 0.00 0.00
6/9/2023 0.00 0.00 0.00
6/16/2023 0.00 0.00 0.00
6/22/2023 0.00 0.00 0.00
6/29/2023 0.00 0.00 0.00
As can be seen from the foregoing table, no fluids were observed to be present in any of the
portals during the quarter.
Any soil and debris identified during the weekly inspections was removed from the wash pad of
the New Decontamination Pad, in accordance with part I.D.14 (b) of the GWDP and Section 3.1
(e)(i)(F) of the DMT Plan. No cracks greater than 1/8" were observed during any weekly
inspections.
7.2 Annual Inspection of Existing Decontamination Pad
The Existing Decontamination Pad was taken out of service and inspected in May 2023, as
required by Part I.F.12 of the Permit and Section 4.2 of the DMT Plan. Repairs and maintenance,
including caulking and sealing of cracks, were completed following the inspection to prevent
additional deterioration. The decontamination pad was returned to service after the completion of
the repair and maintenance activities.
6
The inspection report and photos taken during the inspection are provided in Attachment G.
7.3 Annual Inspection of New Decontamination Pad
The New Decontamination Pad was taken out of service and inspected in May 2023 as required
by Part I.F.12 of the Permit and Section 4.2 of the DMT Plan. Repairs and maintenance,
including caulking and sealing of cracks, were completed immediately following the inspection
to prevent additional deterioration. The decontamination pad was returned to service after the
completion of the repair and maintenance activities.
The inspection report and photos taken during the inspection are provided in Attachment G.
7.4 Annual Inspection of Used Oil and Fuel Tanks
The used oil tank and storage area and the fuel tanks and storage areas were inspected in May
2023 as required by the Spill Prevention, Control and Countermeasures Plan and the DMT Plan.
Repairs and maintenance, including caulking and sealing of cracks, were completed immediately
following the inspection to prevent additional deterioration.
The inspection report and photos taken during the inspection are provided in Attachment G.
7.5 Annual Inspection of Hydrochloric Acid ("HCl") Tanks
The HCl tanks and impoundment were inspected in May 2023 as required by the DMT Plan.
Repairs and maintenance, including caulking and sealing of cracks, were completed immediately
following the inspection to prevent additional deterioration.
8.0 AMMONIUMSULFATEPAD
EFRJ implemented Phase I of the approved May 7, 2012 Mill Nitrate Corrective Action Plan
("CAP") through the installation of the ammonium sulfate concrete pad. The ammonium sulfate
cover area is required to be inspected quarterly for eight (8) quarters and annually thereafter. The
eighth quarterly inspection was completed in August 201 7.
The ammonium sulfate pad annual inspections were completed in May 2023 as required by the
CAP and DMT plan. Repairs and maintenance, including caulking and sealing of cracks on the
concrete were completed following the inspection to prevent additional deterioration. While the
asphalt areas of the cover remain functional, large-scale preventive maintenance on the asphalt
portion of the pad is being reviewed and discussed.
9.0 CELL 4A AND CELL 4B BAT PERFORMANCE STANDARDS REPORT
This Section constitutes the routine Cell 4A and Cell 4B BAT Performance Standards
Monitoring Report for the quarter, as required under Part I.F.3 of the GWDP.
7
9.1 LDS Monitoring
9.1.1 Operational Status of LDS Pumping and Monitoring Equipment
The LDS pumping and monitoring equipment for both of Cell 4A and Cell 4B, including, but not
limited to, the submersible pump, pump controller, head monitoring, and flow meter equipment,
operated continuously during the quarter except as noted below.
Cell 4A
During the quarter, there were no failures of any pumping or monitoring equipment that were not
repaired and made fully operational within 24-hours of discovery, as contemplated by Part
I.E.8(a)(l) of the GWDP.
Cell 4B
During the quarter, there were no failures of any pumping or monitoring equipment that were not
repaired and made fully operational within 24-hours of discovery, as contemplated by Part
I.E.12(a)(l) of the GWDP.
9.1.2 Measurement of Weekly Fluid Head at the Lowest Point in the Secondary FML
The measurements of the fluid head above the lowest point in the secondary FML for Cells 4A
and 4B are provided in Attachment F.
As can be seen from a review of Attachment F, at no point in the quarter did the fluid head in the
Cell 4A LDS sump exceed a I-foot level above the lowest point in the lower FML on the Cell
floor (where for purposes of compliance monitoring, this I-foot distance equates to 2.28 feet
[27.36 inches] above the LDS system transducer), as stipulated by Part I.E.8(a)(2) of the GWDP.
During the quarter, the fluid head in the Cell 4A LDS sump did not exceed 14.9 inches above the
LDS transducer.
As can be seen from a review of Attachment F, at no point in the quarter did the fluid head in the
Cell 4B LDS sump exceed a I-foot level above the lowest point in the lower FML on the Cell
floor, as stipulated by Part 1.E.12(2) of the GWDP. For the purposes of compliance monitoring,
this I-foot distance equates to 2.25 feet (27 inches) above the LDS system. During the quarter,
the fluid head in the Cell 4B LDS sump did not exceed 6.39 inches above the LDS transducer.
9.1. 3 Measurement of the Volume of Fluids Pumped from the LDS
The measurements of the volume of fluids pumped are provided in Attachment F.
Cell 4A
As can be seen from a review of Attachment F, 519,441 gallons of fluid were reported as
pumped from the Cell 4A LDS for the quarter. The average daily LDS flow volume in Cell 4A
8
did not exceed 24,160 gallons/day (i.e.519,441/91 = 5,708 gallons per day), as stipulated by Part
I.E.8(a)(3) of the GWDP.
The daily allowable volume of fluids pumped from the Cell 4A LDS have also been calculated
based on weekly tailings cell fluid measurements using the calculations provided in the Cell 4A
BAT Operations and Maintenance Plan. A letter from the Director dated January 27, 2011 that
approved the use of Cell 4 B, and a subsequent letter dated March 15, 2011, stated approval of the
DMT and Cell 4A O&M Plans, which effectively eliminated the former freeboard elevation
requirements for tailings Cell 4A. Pursuant to the receipt of the March 15, 2011 letter, freeboard
liniits in Cell 4A were no longer required. However, the weekly wastewater elevations are
documented in order to calculate the maximum daily allowable flow volume, in accordance with
the Cell 4A BAT Operations and Maintenance Plan. Based on the wastewater pool elevation
surveys conducted during the quarter, and the maximum head recorded on the FML during the
quarter of 32.46 feet, the allowable flow rate would be approximately 543.88 gallons/acre/day
(21,385 gallons/day for the cell), as determined by Table IA of the Mill's Cell 4A and 4B BAT
Operations and Maintenance Plan, and assuming a liner elevation of 5555.55 feet and
approximately 39.32 acres of liquid area. The average daily flow volume in Cell 4A did not
exceed the calculated flow volume of 21,385 gallons/day. The gallons of fluid pumped from the
Cell 4A LDS during the quarter did not exceed the calculated maximum allowable daily flow
volume. The allowable flow rate calculation for the quarter for Cell 4A along with Table IA is
included in Attachment F of this report.
Cell 4B
As can be seen from a review of Attachment F, 214 gallons of fluid were pumped from the Cell
4B LDS for the quarter. The average daily LDS flow volume in Cell 4B did not exceed the
26,145 gallons/day limit, as stipulated by Part I.E.12(3) of the GWDP.
Based on the wastewater pool elevation surveys conducted during the quarter, the maximum
head recorded on the FML during the quarter was 8.60 feet. The allowable flow rate would
therefore be approximately 422.70 gallons/acre/day (14,613 gallons/day for the cell), as
determined by Table IB of the Mill's Cell 4A and 4B BAT Operations and Maintenance Plan,
and assuming a liner elevation of 5557.5 feet and approximately 34.57 acres of liquid area. The
average daily flow volume in Cell 4B did not exceed the calculated flow volume of 14,613
gallons/day. As mentioned above, a total of 214 gallons of fluid were pumped from the Cell 4B
LDS during the quarter and did not exceed the calculated maximum allowable daily flow
volume. The allowable flow rate and average daily flow rate calculations for the quarter for Cell
4B are included along with Table IB in Attachment F of this report.
9.2 Measurement of Weekly Wastewater Fluids in Cells 4A and 4B
Weekly fluid elevations for Cells 4A and 4B for the quarter are provided in Attachment A along
with elevations for Cell 1.
9
9.3 Slimes Drain Recovery Head Monitoring
As the Mill has not initiated pumping of the Cell 4A or Cell 4B slimes drain systems at this time,
monthly recovery head tests and fluid level measurements are not required at this time pursuant
to Parts I.E.8(b) and I.E.12(b) of the GWDP.
10.0 CELL 1, CELL 2, AND CELL 3 LDS MONITORING
The requirement in Section 3.l(a) of the DMT Plan to monitor the LDS for Cells 1, 2, and 3 is a
requirement of the License, and not a DMT performance monitoring standard required by Parts
I.D.3 or I.E.7 of the GWDP. However, DWMRC has requested that the LDS monitoring for
Cells 1, 2, and 3 be included on the DMT inspection forms and that the results of the monitoring
be reported in the quarterly DMT reports. The Cells 1, 2, and 3 LDS monitoring data are
included in Attachment F.
10.1 Operational Status of LDS Pumping and Monitoring Equipment
The LDS pumping and monitoring equipment for each of Cell 1, Cell 2, and Cell 3, including,
but not limited to, the submersible pump, pump controller, head monitoring, and flow meter
equipment, operated continuously during the quarter except as noted below.
Cell 1
For Cell 1, during the quarter, there were no failures of any pumping or monitoring equipment
not repaired and made fully operational within 24 hours of discovery.
Cell 2
For Cell 2, during the quarter, there was one failure of pumping or monitoring equipment that
was not repaired and made fully operational within 24 hours of discovery. As noted in the 5-day
notice to DWMRC (included in Attachment B), dated May 23, 2023, the Cell 2 slimes drain
pump failed on Sunday May 21, 2023. Due to weekend hours, the pump was assessed on
Monday May 22, 2023 and repairs/pump replacement activities were immediately initiated.
Repairs were fully completed on Tuesday May 23, 2023.
Cell 3
For Cell 3, during the quarter, there were no failures of any pumping or monitoring equipment
not repaired and made fully operational within 24-hours of discovery.
10.2 Measurement of the Volume of Fluids Pumped from the LDS
No fluids were pumped from the Cells 1, 2 or 3 LDSs during the quarter because no fluids were
detected in the Cells 1, 2 or Cell 3 LDSs.
io
10.3 Measurement of Weekly Wastewater Fluids in Cells 1, 2, and 3
A summary of the fluid elevations for the Cells 1, 2 and 3 LDSs for the quarter are provided in
Attachment F. The LDS for Cells 1, 2, and 3 were dry during the quarter.
10.4 Slimes Drain Recovery Head Monitoring
As the Mill has not initiated pumping in the Cell 3 slimes drain system at this time, monthly
recovery head tests and fluid level measurements are not required at this time.
11.0 ANNUAL SLIMES DRAIN RECOVERY HEAD REPORT
The annual slimes drain recovery head report for Cell 2 for calendar year 2022, as required under
Parts I.D.3 (b) and I.F.11 of the GWDP and Section 8.2 of the DMT Plan was included with the
fourth quarter 2021 DMT report which was submitted January 27, 2023. The annual slimes
drain recovery head report for Cell 2 for calendar year 2023 will be included with the fourth
quarter 2023 DMT report, which will be submitted on or before March 1, 2024.
12.0 QUARTERLY PRECIPITATION DATA
Pursuant to a verbal request from DWMRC personnel, EFRl is providing the quarterly
precipitation data in the quarterly DMT reports. The data are collected at the Mill, by the EFRl
Field Staff, using an on-site rain gauge. The data are included as Attachment I to this report.
11
13.0 SIGNATURE AND CERTIFICATION
This document was prepared by Energy Fuels Resources (USA) Inc.
Energy Fuels Resources (USA) Inc.
By:
Scott A. Bakken
Vice President, Regulatory Affairs
12
CERTIFICATION:
I certify, under penalty of law, that this document and all attachments were prepared under my
direction or supervision in accordance with a system designed to assure that qualified personnel
properly gather and evaluate the information submitted. Based on my inquiry of the person or
persons who manage the system, or those persons directly responsible for gathering the
information, the information submitted is, to the best of my knowledge and belief, true, accurate
and complete. I am aware that there are significant penalties for submitting false information,
including the possibility of fine and imprisonment for knowing violations.
Scott A. Bakken
Vice President, Regulatory Affairs
Energy Fuels Resources (USA) Inc.
13
Attachment A
Date Cell 1 Cell 3 1 Cell 4A 2 Cell 4B 3
Free board 5615.40 -RML 5594.60 -RML
Limit 5615.50 -GWDP No Limit 5597.40 -GWDP
4/7/2023 5614.53 No Longer Required 5587.81 5573.03
4/14/2023 5614.44 No Longer Required 5587.75 5573.35
4/21/2023 5614.54 No Longer Required 5587.64 5573.72
4/28/2023 5614.54 No Longer Required 5587.63 5574.45
5/5/2023 5614.44 No Longer Required 5588.01 5574.91
5/12/2023 5614.34 No Longer Required 5587.84 5575.39
5/19/2023 5614.38 No Longer Required 5587.85 5576.08
5/26/2023 5614.33 No Longer Required 5587.81 5576.50
6/2/2023 5614.22 No Longer Required 5587.75 5576.89
6/9/2023 5614.22 No Longer Required 5587.72 5577.72
6/16/2023 5614.16 No Longer Required 5587.56 5578.33
6/22/2023 5614.07 No Longer Required 5587.52 5578.67
6/29/2023 5614.01 No Longer Required 5587.40 5579.10
NM = Not Measured
1Cell 3 is nearly full of solids. The freeboard limit is no longer required and the weekly measurements are no
longer required per the January 27 and March 14, 2011 letters from DWMRC.
2 The previous freeboard limit of 5,593.74 for Cell 4A is set out in a letter from the Director dated November
20, 2008. EFRl proposed in the DMT Plan revision dated November 12, 2010 the removal of the freeboard
limit for Cell 4A to be replaced by a freeboard limit for new Cell 4B that will accommodate the freeboard
requirements of Cells 3, 4A, and 4B. The Director granted a variance from the Cell 4A freeboard limit on
January 13, 2011 and approved the removal of the Cell 4A limit and the use of Cell 4B on January 27, 2011.
The weekly measurements are no longer required for compliance with freeboard limts, but are required for the
calculation of the daily allowable volume of fluids pumped from the Cell 4A LDS.
3 The freeboard limit listed is the value specified in the DMT plan when the pool surface area is 40 acres. A
pool surface area of 40 acres is used because there are no beaches present in Cell 4B at this time.
Attachment B
May 23, 2023
Sent VIA E-MAIL AND EXPEDITED DELIVERY
Mr. Doug H;ansen
Director
Division of Waste Management and Radiation Control
Utah Department of Environmental Quality
195 North 1950 West
Salt Lake City, UT 84116
Energy Fuels Resources (USA) Inc.
225 Union Blvd. Suite 600
Lakewood, CO, US, 80228
303 974 2140
,; ww.energyfuels.com
Re: State of Utah Ground Water Discharge Permit No. UGW370004 White Mesa
Uranium Mill-Notice Pursuant to Part I.D.3.b.l of the Permit
Dear Mr. Hansen:
Pursuant to the White Mesa Mill's (the "Mill's") White Mesa Mill's (the "Mill's") State of Utah
Groundwater Discharge Permit No. UGW370004 (the "Permit"), Energy Fuels Resources (USA)
Inc. ("EFRI"), as operator of the Mill, is providing written notice to the Division of Waste
Management and Radiation Control ("DWMRC") of a temporary outage of the Cell 2 slimes
drain pump, as described in more detail below.
The Permit states that EFRI will notify DWMRC of system failures that cannot be made
operational within 24 hours of discovery. The outage was noted on Sunday May 21, 2023 at
approximately 2:00 pm. It was determined on Monday May 22, 2023 that the failure would
require more than 24 hours to be repaired. Initial notice of this outage was given by telephone to
Mr. Phil Goble of the DWMRC at approximately 1 :40 pm on May 22, 2023 (within 24 hours of
the discovery).
1. Description of the Pumping System Failure
a) The Permit dated March 8, 2021 states that "in the event that the Permittee fails to
maintain DMT or BAT or otherwise fails to meet DMT or BAT standards as required by
the Permit, the Permittee shall submit to the Director a notification and description of the
failure ..... "
b) During the daily comprehensive tailings inspections on Sunday May 21, 2023, specified
in the Tailings Management Plan, Revision 2.5, dated March 2017, Environmental
Personnel noted that the Cell 2 slimes drain pump was not operating.
c) Mill Environmental Personnel noted that due to weekend hours, Mill Maintenance
Personnel were unavailable. This outage did not constitute an emergency situation that
Letter To Doug Hansen
May 23, 2023
Page 2 of3
triggered immediate response. Mill Maintenance Personnel addressed the outage, on
Monday May 22, 2023 during the first day of regular business hours after the failure
was noted.
2. Root Cause
The root cause of the Cell 2 slimes drain pump failure was likely the acidic nature of the slimes
fluid, which corrodes the pump.
3. Steps Taken to Repair and Have the System Full Operational
Upon observing that the Cell 2 slimes pump was not operating, Mill Environmental Personnel
did the following:
a) The Mill Maintenance Department was contacted.
b) Mill Environmental Personnel completed an assessment to assure that no other systems
were affected.
c) Mill Environmental Personnel contacted EFRI corporate personnel to report the outage
of the Cell 2 slimes pump.
d) Mill Environmental Personnel extracted the Cell 2 slimes pump from the Cell 2 slimes
drain and began replacement activities with the Mill Maintenance Department.
4. Period of Time the System Was Not in Operation
The Cell 2 slimes pump was operating during the daily check on Saturday, May 20, 2023. The
Cell 2 slimes pump was noted as not operating during the daily check on Sunday May 21, 2023.
The Cell 2 slimes pump was not operating from sometime after the check on May 20, 2023 until
approximately 8:20 am Tuesday May 23, 2023 when the pump and wiring were replaced and the
system was returned to fully operational.
5. Date by Which the Pumping System Will be Repaired and Operational
The system was made fully operational at 8:20 am Tuesday May 23, 2023.
6. Steps Taken to Prevent a Recurrence of System Failure
EFRI has previously addressed all options for prevention of recurrence. Spare parts, pumps and
wiring are stocked in the Mill warehouse. The Cell 2 slimes drain system is inspected daily and
any issues noted and addressed immediately with Mill Maintenance Personnel during regular
business hours. It is important to note that the system was repaired in less than 24 hours from the
start of regular business hours. No issues were noted during routine inspections that would have
indicated a pump failure was imminent. Failure of this pump did not trigger the need for
Letter To Doug Hansen
May 23, 2023
Page 3 of 3
immediate corrective action and emergency recall of Mill Maintenance Personnel. No additional
actions are needed at this time to prevent recurrence.
If you should have any questions regarding this notice, please contact me.
Yours very truly,
-<~Jv~
ENERGY FUELS RESOURCES (USA) INC.
Kathy Weinel
Director, Regulatory Compliance
CC: David Frydenlund
Logan Shumway
Scott Bakken
Garrin Palmer
Tanner Holliday
Jordan App
Attachment C
QUARTERLY HEAD MEASUREMENT TEST
Location: White Mesa Mill
Slimes Cell# 2
6/21/23
700
800
900
1000
1100 41.31
1200 40.58
1300 39.51
1400 39.16
1500 38.84
Comments:
6/22/23
35.09
34.99
34.89
34.78
34.66
34.54
34.42
34.30
34.19
Date: 6/21/2023 -6/27/2023
Sampler: Deen Lyman, Tanner Holliday
6/23/23 6/24/23 6/25/23 6/26/23
32.87 31.78 30.93 30.42
32.82 30.40
32.77 30.38
32.69 30.36
32.60 30.34
32.55 30.32
32.51 30.30
32.46 30.28
32.40 30.27
6/27/23
29.85
29.85
29.85
Piezometer
C2-P01
C2-P02
C2-P03
C2-P04
C2-P05
C2-P06
C2-P07
C2-P08
C2-P09
C2-P10
C2-P11
C2-P12
C2-P13
C2-P14
C2-P15
C2-P16
C2-P17
C2-P18
C2-P19
C2-P20
C2-P21
C2-P22
C2-P23
~nerg1 , r-ue1s t<esources Iu~AJ me. vvmte Mesa Mm l;ell ~ ::>tanapape 1""1ezometers (n.J
6/16/2016 6/22/2016 6/30/2016 7/7/2016 7/14/2016 7/22/2016 7/28/2016 8/5/2016
11.46 11.34 11.22 11.17 11.22 11.13 11.01 10.94
8.98 8.94 13.96 13.79 13.73 13.54 13.44 13.36
13.23 13.01 12.91 12.66 12.71 12.72 12.55 12.25
10.91 10.82 15.78 15.66 15.70 15.62 15.24 15.14
14.04 13.95 18.89 18.80 18.73 18.73 18.64 18.37
17.52 17.45 17.32 17.29 17.26 17.12 16.96 16.87
15.21 15.07 15.09 15.02 15.03 15.00 14.30 14.23
18.69 18.56 18.54 18.48 18.46 18.45 18.30 18.19
25.25 23.76 23.86 23.82 23.91 23.71 23.60 23.50
22.49 21.93 22.62 22.80 22.96 23.08 22.78 22.74
20.71 20.45 20.78 20.79 20.91 20.92 20.35 20.31
21.12 19.72 25.61 25.77 25.97 26.06 25.89 25.48
16.85 16.83 21.72 21.55 21.48 21.47 21.30 21.14
22.85 22.56 22.60 22.65 22.75 22.60 22.40 22.38
21.37 21.17 21.20 21.16 21.21 21.08 20.80 20.75
20.24 20.01 20.06 20.02 20.10 20.02 19.80 19.71
23.01 22.87 22.90 22.75 22.77 22.75 22.60 22.47
18.70 18.65 18.62 18.52 18.57 18.58 18.38 18.26
10.31 10.28 10.31 10.35 10.50 10.57 10.50 10.50
17.15 17.10 17.02 16.97 16.98 16.97 16.82 16.72
14.96 14.88 14.87 14.76 14.82 14.85 14.68 14.58
12.42 12.34 12.42 12.30 12.40 12.48 12.32 12.23
9.93 9.76 9.74 9.65 9.73 9.85 9.78 9.72
Notes:
1. Piezometers 9 and 15 were found broken at a joint due to construction work in the area between
July 28, 2016 and Augus! 5, 2016. DTW r:adi_ngs on August 5, 2016 were taken before these
were able to be read for this date. The piezometer was repaired and a new elevation measured on
September 11, 2018.
8/11/2016 8/19/2016 8/26/2016
11.00 10.86 10.81
13.43 13.02 12.80
12.22 11.75 11.73
15.16 15.02 14.71
18.31 17.95 17.90
16.91 16.34 16.30
14.30 14.16 13.74
23.26 22.90 22.96
23.52 23.24 23.05
27.87 27.80 27.40
25.35 25.28 25.10
25.61 25.58 25.65
21.10 20.69 20.66
22.46 22.21 21.96
20.51 20.54 20.10
19.78 19.59 19.50
22.55 22.31 22.34
18.31 18.10 18.11
10.65 10.55 10.70
16.75 16.59 16.61
14.65 14.46 14.60
12.34 12.18 12.29
9.76 9.77 9.86
9/2/2016 9/9/2016
13.14 13.12
12.42 12.45
16.62 16.62
14.42 13.97
17.83 17.83
16.05 15.99
13.61 12.91
22.81 22.81
22.92 22.89
27.16 26.90
24.73 24.29
25.29 24.81
20.52 20.52
21.79 21.79
20.10 19.99
19.31 19.26
22.21 22.22
18.01 17.95
10.71 10.82
16.53 16.51
14.33 14.46
12.15 12.25
9.79 9.84
Enera "Fuels Resources (USAl Inc. wn1te Mesa MIii Gell 2 stanap1pe Plezometers en.)
Piezometer 9/16/2016 9/23/2016 9/30/2016 10/7/2016 10/13/2016 10/21/2016 10/28/2016 11/4/2016 11/11/2016 11/18/2016 11/25/2016 12/2/2016
C2-P01 13.08 12.70 12.64 12.66 12.53 12.71 12.59 12.81 12.77 12.91 13.02 12.75
C2-P02 12.30 12.08 11.69 11 .67 11 .58 11 .79 11 .71 11 .92 11 .90 12.00 12.09 11 .88
C2-P03 16.18 15.86 15.89 15.97 15.85 16.00 15.87 16.06 16.02 16.16 16.22 15.95
C2-P04 13.88 13.57 13.55 13.10 12.84 12.91 12.78 12.95 12.91 12.96 13.08 12.88
C2-P05 17.50 17.44 17.25 17.35 17.20 17.30 17.15 17.30 17.22 17.42 17.40 17.20
C2-P06 15.70 18.82 18.72 18.70 18.48 18.56 18.37 18.54 18.44 18.57 18.57 18.32
C2-P07 12.90 15.70 15.76 15.16 14.87 14.91 14.84 14.96 14.95 15.01 15.05 14.90
C2-P08 22.61 22.43 22.50 22.57 22.37 22.50 22.30 22.49 22.38 22.52 22.56 22.28
C2-P09 22.75 22.50 22.25 22.30 22.10 22.29 22.13 22.30 22.19 22.40 22.28 21.87
C2-P10 26.89 26.04 26.05 25.26 25.13 25.82 25.47 25.66 25.62 25.78 25.44 24.70
C2-P11 24.25 23.76 23.78 23.13 22.84 23.21 23.22 23.40 23.41 23.36 23.45 23.08
C2-P12 24.57 27.13 27.02 26.56 26.00 26.77 26.80 27.05 27.05 27.06 26.83 25.94
C2-P13 20.30 20.05 20.14 20.13 19.98 20.13 19.97 20.14 20.08 20.16 20.23 19.91
C2-P14 21.70 23.75 23.60 23.49 23.31 23.58 23.46 23.64 23.50 23.48 23.28 22.78
C2-P15 20.00 22.00 22.06 21 .90 21.58 21 .79 21.72 21.93 21.75 21.85 21.79 21.50
C2-P16 19.24 18.86 19.01 18.96 18.69 18.78 18.75 18.96 18.14 18.53 18.57 18.31
C2-P17 22.10 21.92 22.08 22.12 21 .95 22.11 21 .96 22.07 22.00 22.13 22.10 21 .71
C2-P18 17.86 17.70 17.90 17.88 17.82 17.97 17.77 17.90 17.75 17.55 17.78 17.44
C2-P19 10.84 10.80 11.08 11 .25 11.15 11 .20 11 .18 14.31 14.16 14.06 14.15 13.93
C2-P20 16.40 16.32 16.45 16.49 16.33 16.46 16.35 19.20 19.19 19.27 19.30 19.00
C2-P21 14.34 14.08 14.43 14.46 14.33 14.51 14.28 14.31 14.29 14.36 14.48 13.98
C2-P22 12.22 12.06 12.46 12.32 12.31 12.44 12.35 12.31 12.28 12.38 12.44 12.02
C2-P23 9.85 9.72 10.04 10.14 10.07 9.93 9.98 10.25 9.79 9.35 9.33 9.20
~nergy i-ueIs Kesources (U~AJ me. vvnne Mesa Mm l.e11 ;II!: ~tanap11 pe 1"'Iezometers (lt.J
Piezometer 12/8/2016 12/13/2016 12/20/2016 12/30/2016 1/6/2017 1/11/2017 1/20/2017 1/27/2017 2/3/2017 2/17/2017 2/22/2017 3/3/2017
C2-P01 13.10 13.00 13.32 13.23 13.32 13.05 13.06 13.72 13.48 13.34 13.42 13.80
C2-P02 12.21 12.08 12.49 12.36 12.41 12.15 12.13 12.85 12.63 . 12.51 12.64 13.05
C2-P03 16.27 16.15 16.46 16.32 16.41 16.12 16.13 16.80 16.53 16.35 16.40 16.79
C2-P04 13.14 13.01 13.35 13.25 13.10 12.98 12.95 13.50 13.31 13.22 13.37 13.68
C2-P05 17.43 17.30 17.48 17.33 17.51 17.19 17.18 17.72 17.51 17.40 17.41 17.74
C2-P06 18.58 18.39 18.65 18.44 18.50 18.17 18.12 18.76 18.47 18.31 18.43 18.78
C2-P07 15.10 14.97 15.20 15.09 15.03 15.04 14.85 15.27 15.10 15.01 15.13 15.39
C2-P08 22.61 22.33 22.64 22.40 22.47 22.12 22.08 22.82 22.51 2;2.36 22.50 22.88
C2-P09 21.90 21.80 22.18 21.95 22.09 21.75 21.70 22.29 21.99 21.81 21.85 22.20
C2-P10 25.10 25.10 24.95 24.79 24.78 24.53 24.49 25.01 24.75 24.60 25.12 25.74
C2-P11 23.18 23.27 23.71 23.71 23.56 23.65 23.61 23.64 23.86 23.93 23.95 23.98
C2-P12 26.24 26.61 27.39 27.47 27.32 27.30 27.30 27.79 27.60 27.56 27.72 28.01
C2-P13 20.20 20.02 20.17 20.19 20.16 19.87 19.84 20.55 20.26 20.12 20.24 20.64
C2-P14 22.93 22.82 23.01 22.76 22.89 22.54 22.50 23.09 22.81 22.71 22.80 23.17
C2-P15 21.78 21.70 22.02 21.74 21.84 21.57 21.56 22.10 21.89 21.80 21.93 22.15
C2-P16 18.56 18.48 18.59 18.35 18.42 18.19 18.19 18.69 18.49 18.42 18.55 18.85
C2-P17 22.07 21.88 22.21 21.94 22.05 21.65 21.58 22.20 21.92 21.77 21.82 22.19
C2-P18 17.74 17.55 17.78 17.61 17.58 17.27 17.08 17.76 17.51 17.36 17.46 17.90
C2-P19 14.23 14.08 14.08 13.89 13.99 13.68 13.63 14.21 13.92 13.76 13.80 14.13
C2-P20 19.22 19.10 19.31 19.10 19.15 18.85 18.80 19.35 19.10 18.97 18.94 19.35
C2-P21 19.69 19.47 19.73 18.54 19.11 18.73 18.64 19.37 19.06 18.98 19.03 19.52
C2-P22 18.38 18.06 18.32 18.15 17.66 17.14 17.00 17.65 17.40 17.33 17.42 17.88
C2-P23 9.44 9.37 13.89 14.40 14.29 14.20 13.35 13.75 13.63 13.63 13.80 14.07
t:nerc v t-uels Resources (USA) Inc. White Mesa Mill Cell 2 standpipe Piezometers (ft.)
Piezometer 3/10/2017 3/17/2017 3/24/2017 3/31/2017 4/7/2017 4/14/2017 4/20/2017 4/27/2017 5/2/2017 5/12/2017 5/19/2017 5/25/2017 5/31/2017
C2-P01 13.73 13.75 13.66 13.33 13.68 13.55 13.62 13.37 13.57 13.59 13.60 13.61 13.50
C2-P02 12.97 12.99 12.86 12.58 12.99 12.86 12.96 12.71 12.95 12.98 13.02 13.04 12.95
C2-P03 16.70 16.75 16.66 16.35 16.70 16.61 16.68 16.46 16.69 16.74 16.78 16.79 16.71
C2-P04 13.63 13.61 13.46 13.28 13.69 13.58 13.73 13.50 13.74 13.76 13.79 13.81 13.81
C2-P05 17.67 17.73 17.71 17.44 17.73 17.66 17.70 17.55 17.72 17.81 17.85 17.91 17.76
C2-P06 18.70 18.70 18.62 18.34 18.72 18.62 18.70 18.50 18.73 18.85 18.83 18.85 18.77
C2-P07 15.34 15.34 15.24 15.08 15.40 15.31 15.42 15.27 15.46 15.50 15.52 15.55 15.56
C2-P08 22.74 22.77 22.65 22.29 22.74 22.57 22.67 22.47 22.70 22.80 22.82 22.80 22.72
C2-P09 22.10 22.13 22.10 21.55 22.00 21 .90 22.05 21 .85 22.05 22.10 22.19 22.20 22.10
C2-P10 25.55 25.08 24.86 24.34 24.88 24.82 24.93 24.76 24.96 25.00 25.02 25.03 25.00
C2-P11 24.24 24.25 24.00 23.66 24.20 24.16 24.25 24.10 24.30 24.99 24.31 24.32 24.38
C2-P12 27.93 27.91 27.46 26.81 27.83 27.86 28.03 27.90 28.15 28.17 28.24 28.24 28.31
C2-P13 20.57 20.58 20.44 20.15 20.88 20.45 20.57 20.35 20.59 20.63 20.67 20.73 20.63
C2-P14 23.10 23.15 23.07 22.73 23.10 23.01 22.91 22.75 22.96 23.00 23.09 23.15 23.04
C2-P15 22.20 22.22 22.05 21.79 22.24 22.15 21 .86 21 .78 21 .98 22.01 22.11 22.13 22.10
C2-P16 18.80 18.84 18.69 18.43 18.81 18.70 21 .21 21 .28 21.49 21 .56 21.65 21 .74 21 .65
C2-P17 22.09 22.14 22.09 21.76 22.09 22.00 22.03 21 .93 22 .05 22.08 22.12 22.14 22.02
C2-P18 17.80 17.85 17.69 17.40 17.83 17.65 17.74 17.47 17.75 17.77 17.80 17.86 17.77
C2-P19 14.00 14.02 13.95 13.61 13.91 13.79 15.62 15.40 15.53 15.53 15.50 15.58 15.37
C2-P20 19.25 19.32 19.28 19.00 19.25 19.60 19.20 19.00 19.20 19.44 22.00 21.96 21.94
C2-P21 19.45 19.51 19.43 19.13 19.56 19.45 19.54 19.30 19.61 19.64 19.70 19.72 19.70
C2-P22 17.83 17.89 17.80 17.55 17.96 17.87 17.98 17.75 18.03 18.10 18.14 18.18 18.12
C2-P23 14.04 14.00 13.86 13.82 14.15 13.96 13.86 13.65 13.82 14.02 14.81 14.83 13.92
E ner gy Fuels R (USA) Inc. White Mesa Mill Cell 2 Standpipe P' ters (ft.)
Piezometer 6/8/2017 6/16/2017 6/23/2017 6/30/2017 7/6/2017 7/14/2017 7/28/2017 8/4/2017 9/1/2017 10/13/2017 11/10/2017 12/6/2017 1/10/2018
C2-P01 13.48 13.48 13.41 13.35 13.43 13.32 13.12 13.07 12.96 13.00 13.08 13.49 13.45
C2-P02 12.95 12.96 12.90 12.88 12.97 12.90 12.74 12.70 12.59 12.58 12.58 12.92 12.77
C2-P03 16.73 16.78 16.74 16.70 16.82 16.75 16.60 16.57 16.27 16.34 16.36 16.73 16.60
C2-P04 13.81 13.82 13.76 13.77 13.86 13.85 13.75 13.74 13.65 13.69 13.70 14.05 13.89
C2-P05 17.80 17.88 17.89 17.88 18.00 17.95 17.87 17.85 17.71 17.67 17.61 17.87 17.75
C2-P06 18.80 18.90 18.83 18.83 18.94 18.90 18.81 18.79 18.77 18.75 18.66 18.93 18.62
C2-P07 15.58 15.60 15.56 15.59 15.66 15.66 15.60 15.60 15.60 15.67 15.73 15.97 15.78
C2-P08 22.77 22.84 22.83 22.80 22.95 22.89 22.80 22.79 22.72 22.56 22.42 22.66 23.50
C2-P09 22.11 22.20 22.22 22.03 22.20 22.21 22.19 22.17 22.17 22.10 22.00 22.15 21.83
C2-P10 25.03 25.07 24.96 24.72 25.01 25.07 25.06 25.04 25.05 25.00 24.90 25.09 24.77
C2-P11 24.37 24.41 24.24 24.00 24.26 24.30 24.32 24.33 24.32 24.25 24.20 24.34 24.24
C2-P12 28.32 28.40 28.03 27.60 28.18 28.37 28.45 28.49 28.51 28.55 28.33 28.70 28.52
C2-P13 20.65 20.66 20.67 20.62 20.72 20.68 20.64 20.56 20.48 20.38 20.26 20.48 20.51
C2-P14 23.07 23.15 23.11 23.01 23.18 23.17 23.12 23.10 23.11 23.04 22.90 23.15 22.92
C2-P15 22.12 22.19 22.07 22.05 22.21 22.12 22.16 22.15 22.16 22.13 21.95 22.27 22.02
C2-P16 21.69 21.75 21.66 21.65 21.79 21.79 21.76 21.75 21.76 21.73 21.63 21.89 21.71
C2-P17 22.03 22.11 22.08 22.05 22.17 22.09 21.94 21.90 21.78 21.63 21.42 21.62 21.32
C2-P18 17.77 17.82 17.78 17.84 17.90 17.83 17.70 17.68 17.55 17.40 17.20 17.38 17.06
C2-P19 15.34 15.40 15.35 15.32 15.40 15.31 15.18 15.14 15.10 15.10 15.08 15.37 15.14
C2-P20 21.93 22.01 21.99 21.94 22.07 22.00 21.85 21.84 21.69 21.55 21.33 21.49 21.23
C2-P21 19.71 19.82 19.79 19.86 19.95 19.90 19.76 19.75 19.65 19.52 19.33 19.56 19.21
C2-P22 18.15 18.23 18.20 18.20 18.34 18.30 18.19 18.18 18.14 18.10 17.99 18.25 17.56
C2-P23 13.92 13.95 13.91 13.92 14.03 13.98 13.97 13.99 13.93 13.91 13.98 14.14 14.21
t:neri v t-ueIs Kesources (U:SA) me. wnite Mesa Miil t;ell i :stanapIpe t'Iezometers (n.)
Piezometer 2/1/2018 3/16/2018 4/5/2018 5/11/2018 6/14/2018 7/11/2018 8/2/2018 9/6/2018 10/1/2018 11/5/2018 12/4/2018 1/8/2019 2/1/2019
C2-P01 13.96 14.10 14.28 13.92 13.89 13.63 13.42 13.43 13.29 13.32 13.99 14.45 14.40
C2-P02 13 .30 13.45 13.70 13.45 13.54 13.39 13.11 13.19 12.99 12.88 13.44 13.83 13.79
C2-P03 17.13 17.34 17.56 17.35 17.45 17.33 16.53 16.56 16.41 16.26 16.82 17.22 17.08
C2-P04 14.29 14.44 14.76 14.56 14.70 14.62 14.48 14.53 14.41 14.33 14.83 15.10 15.10
C2-P05 18.14 18.33 18.51 18.41 18.60 18.55 18.54 18.68 18.57 18.45 18.83 19.02 18.95
C2-P06 19.06 19.22 19.49 19.36 19.61 19.58 19.58 19.72 19.59 19.45 19.89 20.05 19.94
C2-P07 16.12 16.26 16.53 16.42 16.75 16.60 16.53 16.61 16.51 16.46 16.85 17.01 16.94
C2-P08 22.82 22.97 23.21 23.05 23.32 23.27 23.28 23.49 23.29 23.09 23.54 23.71 23.57
C2-P09 22 .29 22.17 22.41 22.39 22.62 22.45 22.56 22.74 22.52 22.39 22.71 22.91 22 .78
C2-P10 25.10 25.19 25.30 25.30 25.59 25.44 25.53 25.69 25.44 25.37 25.78 25.50 25.72
C2-P11 24.46 24.54 24.63 24.75 24.98 24.82 24.89 25.00 25.18 24.78 25.01 25.12 25.15
C2-P12 28.76 28.85 28.79 29.06 29.39 28.99 29.12 29.35 29.40 28.98 29.29 29.43 29.36
C2-P13 20.62 20.75 21 .02 20.86 21.12 21 .08 21.00 21 .08 20.85 20.62 21 .05 21.27 21 .15
C2-P14 23.32 23.52 23.63 23.55 23.81 23.67 23.75 23.90 24.09 23.49 23.94 24.12 23.99
C2-P15 22.41 22.56 22.72 22.67 22.92 22.80 22.81 22.97 23.18 22.55 22.99 23.15 23.01
C2-P16 22.05 22.22 22.37 22.34 22.57 22.45 22.43 22.62 22 .38 22.19 22.64 22.78 22.62
C2-P17 21 .79 21.95 22.17 22.05 22.25 22.19 22.20 22.21 21 .98 21.73 22.10 22.39 23.25
C2-P18 17.52 17.71 18.03 17.93 18.22 18.22 18.14 18.19 17.92 17.63 17.99 18.28 18.18
C2-P19 15.61 15.80 16.00 15.79 15.82 15.83 15.82 15.92 15.81 15.77 16.34 16.60 16.50
C2-P20 21.61 21.79 21 .98 21.91 22.10 22.08 22.07 22.09 21.85 21.6 21.93 22.19 22.13
C2-P21 19.70 19.88 20.18 20.07 20.31 20.32 20.32 20.37 20.11 19.84 20.24 20.53 20.38
C2-P22 18.43 18.61 18.88 18.78 19.06 19.07 18.94 19.16 18.92 18.71 19.12 19.41 19.31
C2-P23 14.47 14.70 14.92 15.09 15.19 15.29 15.18 15.18 15.11 15.04 15.18 15.45 15.57
t:nerg1 , ~ue1s Kesources (U~A, me. wmte Mesa MIii \,;eii ~ ~tanap1pe 1-'1ezometers (TT.J
Piezometer 3/20/2019 4/4/2019 5/6/2019 6/5/2019 7/3/2019 8/7/2019 9/5/2019 10/2/2019 11/7/2019 12/4/2019 1/3/2020 2/14/2020 3/3/2020
C2-P01 16.78 13.53 12.78 12.50 12.02 11.78 12.01 11 .96 12.52 12.77 13.33 13.32 13.52
C2-P02 13.97 13.57 12.71 12.33 11.88 11.61 11.68 11 .53 11.92 12.07 12.56 12.57 12.79
C2-P03 16.51 16.06 15.65 15.64 15.37 15.19 15.16 15.16 15.42 15.47 15.97 15.97 16.17
C2-P04 14.85 14.06 13.36 13.31 13.04 13.00 13.07 13.01 13.39 13.60 13.87 13.85 13.99
C2-P05 18.93 18.61 18.24 18.29 18.21 18.17 18.20 18.15 18.16 18.05 18.44 18.44 18.54
C2-P06 20.17 19.95 19.59 19.52 19.25 19.13 19.13 18.97 18.97 18.93 19.28 19.26 19.36
C2-P07 16.77 16.55 16.41 16.44 16.21 16.11 16.06 15.89 16.02 16.13 16.32 16.33 16.52
C2-P08 23.82 23.70 23.33 23.33 23.17 23.15 23.19 23.09 23.06 22.93 23.25 23.26 23.29
C2-P09 22.95 23.00 22.90 22.91 22.78 22.72 22.74 22.61 22.64 22.24 22.60 22.60 22.40
C2-P10 25.89 25.92 25.90 26.00 25.87 25.89 25.89 25.69 25.70 25.54 25.74 25.75 25.57
C2-P11 25.31 25.30 25.39 25.47 25.35 25.35 25.29 24.96 25.10 25 .05 24.95 24.96 25.10
C2-P12 29.54 29.53 29.59 29.67 29.55 29.57 29.56 29.16 29.32 29.06 29.26 29.27 28.90
C2-P13 21.47 21 .31 20.98 21.09 21.10 21 .09 21.05 20.68 20.70 20.58 20.81 20.81 20.99
C2-P14 25.15 24.14 24.01 24.03 23.94 23.91 23.92 23.76 23.75 23.53 23.91 23.91 23.85
C2-P15 23.43 23.22 23.12 23.19 23.06 23.05 23.07 22.89 22.88 22.73 23.03 23.04 22.99
C2-P16 22.78 22.76 22.68 22.76 22.61 22.61 22.62 22.44 22.45 22 .30 22.59 22.60 22.59
C2-P17 22.71 22.64 22.51 22.56 22.50 22.40 22.36 22.17 22.12 21 .91 22.28 22.30 22.38
C2-P18 18.71 18.72 18.72 18.95 18.91 18.88 18.85 18.61 18.59 18.42 18.69 18.71 18.93
C2-P19 16.10 15.96 15.90 16.01 15.92 15.87 15.96 15.94 16.14 16.11 16.57 16.58 16.68
C2-P20 22.55 22.60 22.57 22.71 22.70 22.63 22.59 22.38 22.31 22.06 22.41 22.42 22.50
C2-P21 20.88 20.83 20.84 21.01 20.97 20.92 20.90 20.65 20.61 20.36 20.66 20.66 20.75
C2-P22 19.72 19.65 19.65 19.79 19.68 19.63 19.59 19.36 19.38 19.25 19.55 19.56 19.68
C2-P23 15.91 15.84 15.82 15.89 15.85 15.76 15.67 15.39 15.58 15.64 15.72 15.74 16.18
nerg, --E Fuels R (USA) Inc. White Mesa Mill C Standpipe P' {f!J
Piezometer 4/1/2020 5/1/2020 6/2/2020 7/14/2020 8/5/2020 9/2/2020 10/1/2020 11/2/2020 12/2/2020 1/4/2021 2/4/2021 3/1/2021 4/5/2021
C2-P01 13.65 13.42 13.19 12.65 12.48 12.45 12.61 12.99 13.27 13.75 13.96 14.39 14.07
C2-P02 13.11 13.30 12.96 12.50 12.33 12.24 12.33 12.58 12.71 13.10 13.33 13.83 13.68
C2-P03 16.48 16.39 16.34 16.00 15.88 15.83 15.91 16.11 16.25 16.59 16.78 17.24 17.20
C2-P04 14.21 14.01 14.10 13.78 13.80 13.84 14.00 14.34 14.37 14.70 14.79 15.23 15.15
C2-P05 18.79 18.83 18.94 18.86 18.81 18.81 18.79 18.78 18.82 18.98 19.07 19.36 19.20
C2-P06 19:71 19.65 19.84 19.63 19.59 19.58 19.56 19.67 19.63 19.82 19.85 20.28 20.04
C2-P07 16.80 16.74 16.81 16.60 16.56 16.54 16.56 16.75 16.71 16.95 16.97 17.34 17.24
C2-P08 23.60 23.62 23.82 23.68 23.68 23.70 23.70 23.70 23.61 23.75 23.76 24.17 23.89
C2-P09 22.71 22.69 22.85 22 .79 22.77 22.80 22.73 22.75 22.63 22.79 22.70 23.02 22.79
C2-P10 26.02 25.95 26.13 26.02 26.02 26.05 25.97 26.10 25.81 26.04 25.95 26.08 26.08
C2-P11 25.61 25.64 25.75 25.63 25.62 25.60 25.50 25.60 25.24 25.44 25.44 25.43 25.70
C2-P12 29.64 29.71 29.82 29.70 29.65 29.62 29.54 29.74 29.21 29.58 29 .58 29.35 29.88
C2-P13 21 .39 21.54 21.70 21.57 21.54 21.40 21.43 21 .35 21 .23 21.41 21.44 21.85 21.68
C2-P14 24.15 24.15 24.35 24.21 24.18 24.20 24.15 24.21 24.11 24.30 24.29 24.56 24.35
C2-P15 23.34 23.31 23.50 23.34 23.32 23.31 23.32 23.43 23.47 23.50 23.49 23.62 23.58
C2-P16 22.86 22.88 23.05 22.90 22 .91 22.91 22.95 23.10 22.96 23.20 23.16 23.31 23.24
C2-P17 22.71 22.77 22.96 22.81 22.78 22.73 22.64 22.60 22.55 22.68 22.79 23.21 22.99
C2-P18 19.31 19.50 19.78 19.70 19.64 19.58 19.61 19.55 19.48 19.59 19.67 20.20 20.09
C2-P19 16.93 16.92 17.02 16.84 16.79 16.86 16.94 17.13 17.21 17.44 17.47 17.86 17_54
C2-P20 22.74 22.89 23.06 22 .97 22.90 22.82 22.78 22.70 22.66 22.75 22.85 23.26 23.07
C2-P21 21 .11 21.24 21.45 21.34 21.29 21.23 21.17 21.15 21.04 21.11 21 .17 21.68 21 .50
C2-P22 20.02 20.10 20.32 20.19 20.1 1 20.09 20.06 20.13 20.02 20.18 20.23 20.78 20.55
C2-P23 16.40 16.62 16.74 16.71 16.65 16.58 16.63 16.70 16.70 16.81 16.98 17.18 17.44
.. E Fuels R, (USA) Inc. White Mesa Mill Cell 2 Standpipe P' (ft)
Piezometer 5/5/2021 6/3/2021 7/9/2021 8/10/2021 9/8/2021 10/7/2021 11/4/2021 12/3/2021 1/13/2022 2/4/2022 3/2/2022 4/6/2022 5/2/2022
C2-P01 14.29 14.04 13.72 13.45 13.45 13.37 13.64 13.87 14.42 14.54 14.79 14.59 14.66
C2-P02 13.97 13.85 13.65 13.38 13.30 13.16 13.31 13.48 14.02 14.05 14.49 14.28 14.43
C2-P03 17.34 17.24 17.10 16.95 16.90 16.78 16.91 17.08 17.48 17.62 17.94 17.78 17.94
C2-P04 15.38 15.28 15.14 14.99 14.98 14.92 15.11 15.17 15.62 15.58 15.90 15.77 15.91
C2-P05 19.49 19.51 19.51 19.48 19.46 19.36 19.40 19.47 19.63 19.75 19.92 19.90 20.05
C2-P06 20.43 20.37 20.37 20.30 20.35 20.23 20.32 20.33 20.59 20.64 20.86 20.75 20.95
C2-P07 17.48 17.40 17.37 17.30 17.33 17.27 17.40 17.43 17.73 17.68 17.90 17.83 17.95
C2-P08 24.29 24.26 24.27 24 .26 24.25 24.08 24.11 24.13 24.36 24.39 24.61 24.48 24.68
C2-P09 23.13 23.11 23.12 23.12 23.16 23.23 23.10 23.08 23.11 23.27 23.32 23.27 23.44
C2-P10 26.48 26.34 26.39 26.40 26.47 26.36 26.44 26.30 26.49 26.46 26.57 26.53 26.68
C2-P11 25.90 25.85 25.83 25.82 25.92 25.72 25.83 25.80 26.03 25.84 26.08 26.11 26.23
C2-P12 30.11 30.13 30.13 30.10 30.16 29.98 30.15 30.03 30.41 30.18 30.41 30.48 30.64
C2-P13 22.04 21.99 21.98 21.88 21 .88 21 .70 21.76 21.75 22.04 22.02 22.25 22.12 22.34
C2-P14 24.86 24.72 24.73 24.70 24.66 24.50 24.57 24.53 24.67 24.80 24.87 24.81 24.91
C2-P15 24.01 23.85 23.89 23.83 23.81 23.64 23.72 23.60 23.83 23.91 24.00 23.94 24.04
C2-P16 23.71 23.56 23.58 23.47 23.46 23.30 23.40 23.31 23.51 23.81 23.66 23.87 23.67
C2-P17 23.52 23.39 23.41 23.29 23.18 23.01 23.02 23.03 23.26 23.67 23.55 23.82 23.59
C2-P18 20.68 20.55 20.61 20.44 20.35 20.17 20.20 20.15 20.47 20.76 20.76 20.99 20.84
C2-P19 18.01 17.82 17.78 17.67 17.64 17.60 17.76 17.78 17.95 18.34 18.15 18.37 18.09
C2-P20 23.56 23.41 23.45 23.33 23.21 23.08 23.05 23.06 23.31 23.65 23.55 23.82 23.59
C2-P21 22.08 21.94 21.98 21.85 21.76 21 .58 21.55 21 .53 21.69 22.13 22.07 22.32 22.10
C2-P22 21 .08 20.92 20.93 20.80 20.76 20.62 20.68 20.63 20.78 21.18 21.15 21.32 21 .15
C2-P23 17.58 17.65 17.65 17.55 17.48 17.43 17.44 17.52 17.75 17.68 17.93 17.93 18.04
t:ne rgy i-ueIs Kesources (U:;AJ me. vvmte Mesa MIii (.;ell 2 :;tanap1pe t'Iezometers (tt.)
Piezometer 6/22/2022 7/6/2022 8/4/2022 9/1/2022 10/7/2022 11/8/2022 12/1/2022 1/10/2023 2/2/2023 3/9/2023 4/7/2023 5/4/2023 6/1/2023
C2-P01 14.57 14.34 14.10 13.86 13.96 13.97 14.19 14.69 15.16 15.25 15.15 14.55 14.26
C2-P02 14.56 14.35 14.11 13.87 13.89 13.74 13.90 14.36 14.86 15.01 15.12 14.70 14.39
C2-P03 18.07 17.91 17.75 17.54 17.60 17.50 17.62 18.00 18.44 18.53 18.28 17.94 17.81
C2-P04 16.04 15.85 15.68 15.59 15.63 15.53 15.67 15.97 16.33 16.43 16.48 15.74 15.28
C2-P05 20.23 20.18 20.16 20.05 20.11 20.03 20.04 20.22 20.52 20.54 20.42 20.16 20.22
C2-P06 21.20 21.07 21.03 20.96 21.06 20.94 20.96 21.12 21.52 21.61 21.71 21.50 21.43
C2-P07 18.15 18.02 17.96 17.95 17.99 17.92 18.00 18.15 18.42 18.44 18.52 18.32 18.27
C2-P08 24.95 24.79 24.76 24.65 24.74 24.56 24.56 24.72 25.14 25.15 25.16 24.77 24.75
C2-P09 23.56 23.56 23.59 23.57 23.57 23.55 23.50 23.55 23.87 23.95 23.93 23.86 23.93
C2-P10 26.90 26.81 26.81 25.87 25.92 25.91 25.92 25.95 26.25 26.33 26.42 26.28 26.30
C2-P11 26.38 26.32 26.35 26.34 26.17 26.15 26.20 26.32 26.45 26.58 26.72 26.67 26.67
C2-P12 30.89 30.85 30.86 30.86 30.68 30.76 30.80 30.93 31.09 31.24 31.34 31.23 31.16
C2-P13 22.56 22.40 22.32 22.24 22.24 22.05 22.07 22.26 22.62 22.69 22.77 22.58 22.59
C2-P14 25.16 25.07 25.04 24.96 24.95 24.85 24.81 24.96 25.32 25.38 25.41 25.18 25.23
C2-P15 24.27 24.17 24.14 24.07 24.07 23.98 23.97 24.16 24.41 24.43 24.50 24.28 24.31
C2-P16 23.90 23.78 23.75 23.69 23.72 23.62 23.62 23.78 24.03 24.05 24.10 23.87 23.89
C2-P17 23.91 23.82 23.74 23.63 23.64 23.33 23.29 23.56 24.02 24.08 24.20 24.01 24.15
C2-P18 21.25 21.12 21.02 20.86 20.85 20.53 20.49 20.72 21.15 21.25 21.44 21.28 21.39
C2-P19 18.30 18.17 18.09 17.98 18.09 18.03 18.08 18.23 18.61 18.62 18.51 18.08 17.99
C2-P20 23.87 23.80 23.73 23.61 23.59 23.34 23.31 23.71 24.00 24.06 24.14 23.99 24.12
C2-P21 22.52 22.41 22.30 22.13 22.14 21.80 21.78 22.03 22.47 22.56 22.71 22.52 22.65
C2-P22 21.53 21.40 21.31 21.18 21.20 20.95 20.92 21.15 21.55 21.61 21.75 21.57 21.63
C2-P23 18.26 18.22 18.13 18.00 17.93 17.76 17.82 18.07 18.14 18.23 18.35 18.35 18.15
.
Piezometer 6/16/2016 6/22/2016 6/30/2016 7/7/2016 7/14/2016 7/22/2016 7/28/2016 8/5/2016 8/11/2016 8/19/2016 8/26/2016 9/2/2016 9/9/2016
C2-P01 5611.05 5611.17 5611.29 5611.34 5611.29 5611.38 5611.50 5611.57 5611.51 5611.65 5611.70 5611.94 5611.96
C2-P02 5610.90 5610.94 5610.92 5611.09 5611.15 5611.34 5611.44 5611.52 5611.45 5611.86 5612.08 5612.46 5612.43
C2-P03 5610.04 5610.26 5610.36 5610.61 5610.56 5610.55 5610.72 5611.02 5611.05 5611.52 5611.54 5611.54 5611.54
C2-P04 5610.84 5610.93 5610.97 5611.09 5611.05 5611.13 5611.51 5611.61 5611.59 5611.73 5612.04 5612.33 5612.78
C2-P05 5606.50 5606.59 5606.65 5606.74 5606.81 5606.81 5606.90 5607.17 5607.23 5607.59 5607.64 5607.71 5607.71
C2-P06 5606.51 5606.58 5606.71 5606.74 5606.77 5606.91 5607.07 5607.16 5607.12 5607.69 5607.73 5607.98 5608.04
C2-P07 5606.53 5606.67 5606.65 5606.72 5606.71 5606.74 5607.44 5607.51 5607.44 5607.58 5608.00 5608.13 5608.83
C2-P08 5603.71 5603.84 5603.86 5603.92 5603.94 5603.95 5604.10 5604.21 5604.07 5604.43 5604.37 5604.52 5604.52
C2-P09 5599.31 5600.80 5600.70 5600.74 5600.65 5600.85 5600.96 5601.06 5600.97 5601.25 5601.44 5601.57 5601.60
C2-P10 5598.44 5599.00 5598.31 5598.13 5597.97 5597.85 5598.15 5598.19 5598.01 5598.08 5598.48 5598.72 5598.98
C2-P11 5599.55 5599.81 5599.48 5599.47 5599.35 5599.34 5599.91 5599.95 5599.87 5599.94 5600.12 5600.49 5600.93
C2-P12 5595.99 5597.39 5596.50 5596.34 5596.14 5596.05 5596.22 5596.63 5596.50 5596.53 5596.46 5596.82 5597.30
C2-P13 5603.71 5603.73 5603.84 5604.01 5604.08 5604.09 5604.26 5604.42 5604.46 5604.87 5604.90 5605.04 5605.04
C2-P14 5601.28 5601.57 5601.53 5601.48 5601.38 5601.53 5601.73 5601.75 5601.67 5601.92 5602.17 5602.34 5602.34
C2-P15 5601.80 5602.00 5601.97 5602.01 5601.96 5602.09 5602.37 5602.42 5602.65 5602.62 5603.06 5603.06 5603.17
C2-P16 5602.27 5602.50 5602.45 5602.49 5602.41 5602.49 5602.71 5602.80 5602.73 5602.92 5603.01 5603.20 5603.25
C2-P17 5606.06 5606.20 5606.17 5606.32 5606.30 5606.32 5606.47 5606.60 5606.52 5606.76 5606.73 5606.86 5606.85
C2-P18 5606.20 5606.25 5606.28 5606.38 5606.33 5606.32 5606.52 5606.64 5606.59 5606.80 5606.79 5606.89 5606.95
C2-P19 5609.06 5609.09 5609.06 5609.02 5608.87 5608.80 5608.87 5608.87 5608.72 5608.82 5608.67 5608.66 5608.55
C2-P20 5609.43 5609.48 5609.56 5609.61 5609.60 5609.61 5609.76 5609.86 5609.83 5609.99 5609.97 5610.05 5610.07
C2-P21 5610.72 5610.80 5610.81 5610.92 5610.86 5610.83 5611.00 5611.10 5611.03 5611.22 5611.08 5611.35 5611.22
C2-P22 5611.77 5611.85 5611.77 5611.89 5611.79 5611.71 5611.87 5611.96 5611.85 5612.01 5611.90 5612.04 5611.94
C2-P23 5612.29 5612.46 5612.48 5612.57 5612.49 5612.37 5612.44 5612.50 5612.46 5612.45 5612.36 5612.43 5612.38
E Fuels R (USA) Inc. White Mesa Mill Cell 2 Standpipe p· ters Water Surface El {ft 11
Piezometer 9/16/2016 9/23/2016 9/30/2016 10n/2016 10/13/2016 10/21/2016 10/28/2016 11/4/2016 11/11/2016 11/18/2016 11/25/2016 12/2/2016
C2-P01 5612.00 5612.38 5612.44 5612.42 5612.55 5612.37 5612.49 5612.27 5612.31 5612.17 5612.06 5612.33
C2-P02 5612.58 5612.80 5613.19 5613.21 5613.30 5613.09 5613.17 5612.96 5612.98 5612.88 5612.79 5613.00
C2-P03 5611.98 5612.30 5612.27 5612.19 5612.31 5612.16 5612.29 5612.10 5612.14 5612.00 5611.94 5612.21
C2-P04 5612.87 5613.18 5613.20 5613.65 5613.91 5613.84 5613.97 5613.80 5613.84 5613.79 5613.67 5613.87
C2-P05 5608.04 5608.10 5608.29 5608.19 5608.34 5608.24 5608.39 5608.24 5608.32 5608.12 5608.14 5608.34
C2-P06 5608.33 5608.51 5608.61 5608.63 5608.85 5608.77 5608.96 5608.79 5608.89 5608.76 5608.76 5609.01
C2-P07 5608.84 5609.22 5609.16 5609.76 5610.05 5610.01 5610.08 5609.96 5609.97 5609.91 5609.87 5610.02
C2-P08 5604.72 5604.90 5604.83 5604.76 5604.96 5604.83 5605.03 5604.84 5604.95 5604.81 5604.77 5605.05
C2-P09 5601 .74 5601.99 5602.24 5602.19 5602.39 5602.20 5602.36 5602.19 5602.30 5602.09 5602.21 5602.62
C2-P10 5598.99 5599.84 5599.83 5600.62 5600.75 5600.06 5600.41 5600.22 5600.26 5600.10 5600.44 5601 .18
C2-P11 5600.97 5601.46 5601.44 5602.09 5602.38 5602.01 5602.00 5601 .82 5601 .81 5601 .86 5601 .77 5602.14
C2-P12 5597.54 5598.26 5598.37 5598.83 5599.39 5598.62 5598.59 5598.34 5598.34 5598.33 5598.56 5599.45
C2-P13 5605.26 5605.51 5605.42 5605.43 5605.58 5605.43 5605.59 5605.42 5605.48 5605.40 5605.33 5605.65
C2-P14 5602.43 5602.74 5602.89 5603.00 5603.18 5602.91 5603.03 5602.85 5602.99 5603.01 5603.21 5603.71
C2-P15 5603.16 5603.51 5603.45 5603.61 5603.93 5603.72 5603.79 5603.58 5603.76 5603.66 5603.72 5604.01
C2-P16 5603.27 5603.65 5603.50 5603.55 5603.82 5603.73 5603.76 5603.55 5604.37 5603.98 5603.94 5604.20
C2-P17 5606.97 5607.15 5606.99 5606.95 5607.12 5606.96 5607.11 5607.00 5607.07 5606.94 5606.97 5607.36
C2-P18 5607.04 5607.20 5607.00 5607.02 5607.08 5606.93 5607.13 5607.00 5607.15 5607.35 5607.12 5607.46
C2-P19 5608.53 5608.57 5608.29 5608.12 5608.22 5608.17 5608.19 5607.92 5608.07 5608.17 5608.08 5608.30
C2-P20 5610.18 5610.26 5610.13 5610.09 5610.25 5610.12 5610.23 5610.23 5610.24 5610.16 5610.13 5610.43
C2-P21 5611 .34 5611 .60 5611 .25 5611 .22 5611 .35 5611.17 5611.40 5611 .37 5611.39 5611.32 5611.20 5611 .70
C2-P22 5611 .97 5612.13 5611 .73 5611 .87 5611 .88 5611 .75 5611 .84 5611 .88 5611.91 5611 .81 5611 .75 5612.17
C2-P23 5612.37 5612.50 5612.18 5612.08 5612.15 5612.29 5612.24 5611.97 5612.43 5612.87 5612.89 5613.02
E Fuels R .. (USA) Inc. White Mesa Mill Cell 2 Standpipe p· ters Water Surface Elevation {ft I}
Piezometer 12/8/2016 12/13/2016 12/20/2016 12/30/2016 1/6/2017 1/11/2017 1/20/2017 1/27/2017 2/3/2017 2/17/2017 2/22/2017 3/3/2017
C2-P01 5611.98 5612.08 5611.76 5611.85 5611.76 5612.03 5612.02 5611.36 5611.60 5611.74 5611.66 5611.28
C2-P02 5612.67 5612.80 5612.39 5612.52 5612.47 5612.73 5612.75 5612.03 5612.25 5612.37 5612.24 5611.83
C2-P03 5611.89 5612.01 5611.70 5611.84 5611.75 5612.04 5612.03 5611.36 5611.63 5611.81 5611.76 5611.37
C2-P04 5613.61 5613.74 5613.40 5613.50 5613.65 5613.77 5613.80 5613.25 5613.44 5613.53 5613.38 5613.07
C2-P05 5608.11 5608.24 5608.06 5608.21 5608.03 5608.35 5608.36 5607.82 5608.03 5608.14 5608.13 5607.80
C2-P06 5608.75 5608.94 5608.68 5608.89 5608.83 5609.16 5609.21 5608.57 5608.86 5609.02 5608.90 5608.55
C2-P07 5609.82 5609.95 5609.72 5609.83 5609.89 5609.88 5610.07 5609.65 5609.82 5609.91 5609.79 5609.53
C2-P08 5604.72 5605.00 5604.69 5604.93 5604.86 5605.21 5605.25 5604.51 5604.82 5604.97 5604.83 5604.45
C2-P09 5602.59 5602.69 5602.31 5602.54 5602.40 5602.74 5602.79 5602.20 5602.50 5602.68 5602.64 5602.29
C2-P10 5600.78 5600.78 5600.93 5601.09 5601.10 5601.35 5601.39 5600.87 5601.13 5601.28 5600.76 5600.14
C2-P11 5602.04 5601.95 5601.51 5601.51 5601.66 5601.57 5601.61 5601.58 5601.36 5601.29 5601.27 5601.24
C2-P12 5599.15 5598.78 5598.00 5597.92 5598.07 5598.09 5598.09 5597.60 5597.79 5597.83 5597.67 5597.38
C2-P13 5605.36 5605.54 5605.39 5605.37 5605.40 5605.69 5605.72 5605.01 5605.30 5605.44 5605.32 5604.92
C2-P14 5603.56 5603.67 5603.48 5603.73 5603.60 5603.95 5603.99 5603.40 5603.68 5603.78 5603.69 5603.32
C2-P15 5603.73 5603.81 5603.49 5603.77 5603.67 5603.94 5603.95 5603.41 5603.62 5603.71 5603.58 5603.36
C2-P16 5603.95 5604.03 5603.92 5604.16 5604.09 5604.32 5604.32 5603.82 5604.02 5604.09 5603.96 5603.66
C2-P17 5607.00 5607.19 5606.86 5607.13 5607.02 5607.42 5607.49 5606.87 5607.15 5607.30 5607.25 5606.88
C2-P18 5607.16 5607.35 5607.12 5607.29 5607.32 5607.63 5607.82 5607.14 5607.39 5607.54 5607.44 5607.00
C2-P19 5608.00 5608.15 5608.15 5608.34 5608.24 5608.55 5608.60 5608.02 5608.31 5608.47 5608.43 5608.10
C2-P20 5610.21 5610.33 5610.12 5610.33 5610.28 5610.58 5610.63 5610.08 5610.33 5610.46 5610.49 5610.08
C2-P21 5611.25 5611.47 5611.21 5612.40 5611.83 5612.21 5612.30 5611.57 5611.88 5611.96 5611.91 5611.42
C2-P22 5612.01 5612.33 5612.07 5612.24 5612.73 5613.25 5613.39 5612.74 5612.99 5613.06 5612.97 5612.51
C2-P23 5612.78 5612.85 5613.70 5613.19 5613.30 5613.39 5614.24 5613.84 5613.96 5613.96 5613.79 5613.52
E Fuels R
Piezometer 3/10/2017 3/17/2017 3/24/2017
C2-P01 5611.35 5611.33 5611.42
C2-P02 5611.91 5611.89 5612.02
C2-P03 5611.46 5611.41 5611.50
C2-P04 5613.12 5613.14 5613.29
C2-P05 5607.87 5607.81 5607.83
C2-P06 5608.63 5608.63 5608.71
C2-P07 5609.58 5609.58 5609.68
C2-P08 5604.59 5604.56 5604.68
C2-P09 5602.39 5602.36 5602.39
C2-P10 5600.33 5600.80 5601.02
C2-P11 5600.98 5600.97 5601.22
C2-P12 5597.46 5597.48 5597.93
C2-P13 5604.99 5604.98 5605.12
C2-P14 5603.39 5603.34 5603.42
C2-P15 5603.31 5603.29 5603.46
C2-P16 5603.71 5603.67 5603.82
C2-P17 5606.98 5606.93 5606.98
C2-P18 5607.10 5607.05 5607.21
C2-P19 5608.23 5608.21 5608.28
C2-P20 5610.18 5610.11 5610.15
C2-P21 5611.49 5611.43 5611.51
C2-P22 5612.56 5612.50 5612.59
C2-P23 5613.55 5613.59 5613.73
.. {USA) Inc. White Mesa Mill Cell 2 Standoioe p· Water Surface El
3/31/2017 4/7/2017 4/14/2017
5611.75 5611.40 5611.53
5612.30 5611.89 5612.02
5611.81 5611.46 5611.55
5613.47 5613.06 5613.17
5608.10 5607.81 5607.88
5608.99 5608.61 5608.71
5609.84 5609.52 5609.61
5605.04 5604.59 5604.76
5602.94 5602.49 5602.59
5601.54 5601.00 5601.06
5601.56 5601.02 5601.06
5598.58 5597.56 5597.53
5605.41 5604.68 5605.11
5603.76 5603.39 5603.48
5603.72 5603.27 5603.36
5604.08 5603.70 5603.81
5607.31 5606.98 5607.07
5607.50 5607.07 5607.25
5608.62 5608.32 5608.44
5610.43 5610.18 5609.83
5611.81 5611.38 5611.49
5612.84 5612.43 5612.52
5613.77 5613.44 5613.63
4/20/2017 4/27/2017 5/2/2017 5/12/2017 5/19/2017
5611.46 5611.71 5611.51 5611.49 5611.48
5611.92 5612.17 5611.93 5611.90 5611.86
5611.48 5611.70 5611.47 5611.42 5611.38
5613.02 5613.25 5613.01 5612.99 5612.96
5607.84 5607.99 5607.82 5607.73 5607.69
5608.63 5608.83 5608.60 5608.48 5608.50
5609.50 5609.65 5609.46 5609.42 5609.40
5604.66 5604.86 5604.63 5604.53 5604.51
5602.44 5602.64 5602.44 5602.39 5602.30
5600.95 5601.12 5600.92 5600.88 5600.86
5600.97 5601.12 5600.92 5600.23 5600.91
5597.36 5597.49 5597.24 5597.22 5597.15
5604.99 5605.21 5604.97 5604.93 5604.89
5603.58 5603.74 5603.53 5603.49 5603.40
5603.65 5603.73 5603.53 5603.50 5603.40
5604.33 5604.26 5604.05 5603.98 5603.89
5607.04 5607.14 5607.02 5606.99 5606.95
5607.16 5607.43 5607.15 5607.13 5607.10
5608.80 5609.02 5608.89 5608.89 5608.92
5610.23 5610.43 5610.23 5609.99 5610.04
5611.40 5611.64 5611.33 5611.30 5611.24
5612.41 5612.64 5612.36 5612.29 5612.25
5613.73 5613.94 5613.77 5613.57 5612.78
* Week of 4/20/17 Piezometer 19 was hit by equipment
and then raised and piezometer 16 was raised to keep
above cover.
ft I)
5/25/2017 5/31/2017
5611.47 5611.58
5611.84 5611.93
5611.37 5611.45
5612.94 5612.94
5607.63 5607.78
5608.48 5608.56
5609.37 5609.36
5604.53 5604.61
5602.29 5602.39
5600.85 5600.88
5600.90 5600.84
5597.15 5597.08
5604.83 5604.93
5603.34 5603.45
5603.38 5603.41
5603.80 5603.89
5606.93 5607.05
5607.04 5607.13
5608.84 5609.05
5610.08 5610.10
5611.22 5611.24
5612.21 5612.27
5612.76 5613.67
--,
Piezometer 6/8/2017 6/16/2017 6/23/2017 6/30/2017 7/6/2017 7/14/2017 7/28/2017 8/4/2017 9/1/2017 10/13/2017 11/10/2017 12/6/2017 1/10/2018
C2-P01 5611.60 5611.60 5611.67 5611.73 5611.65 5611.76 5611.96 5612.01 5612.12 5612.08 5612.00 5611.59 5611.63
C2-P02 5611.93 5611.92 5611.98 5612.00 5611.91 5611.98 5612.14 5612.18 5612.29 5612.30 5612.30 5611.96 5612.11
C2-P03 5611.43 5611.38 5611.42 5611.46 5611.34 5611.41 5611.56 5611.59 5611.89 5611.82 5611.80 5611.43 5611.56
C2-P04 5612.94 5612.93 5612.99 5612.98 5612.89 5612.90 5613.00 5613.01 5613.10 5613.06 5613.05 5612.70 5612.86
C2-P05 5607.74 5607.66 5607.65 5607.66 5607.54 5607.59 5607.67 5607.69 5607.83 5607.87 5607.93 5607.67 5607.79
C2-P06 5608.53 5608.43 5608.50 5608.50 5608.39 5608.43 5608.52 5608.54 5608.56 5608.58 5608.67 5608.40 5608.71
C2-P07 5609.34 5609.32 5609.36 5609.33 5609.26 5609.26 5609.32 5609.32 5609.32 5609.25 5609.19 5608.95 5609.14
C2-P08 5604.56 5604.49 5604.50 5604.53 5604.38 5604.44 5604.53 5604.54 5604.61 5604.77 5604.91 5604.67 5603.83
C2-P09 5602.38 5602.29 5602.27 5602.46 5602.29 5602.28 5602.30 5602.32 5602.32 5602.39 5602.49 5602.34 5602.66
C2-P10 5600.85 5600.81 5600.92 5601.16 5600.87 5600.81 5600.82 5600.84 5600.83 5600.88 5600.98 5600.79 5601.11
C2-P11 5600.85 5600.81 5600.98 5601.22 5600.96 5600.92 5600.90 5600.89 5600.90 5600.97 5601.02 5600.88 5600.98
C2-P12 5597.07 5596.99 5597.36 5597.79 5597.21 5597.02 5596.94 5596.90 5596.88 5596.84 5597.06 5596.69 5596.87
C2-P13 5604.91 5604.90 5604.89 5604.94 5604.84 5604.88 5604.92 5605.00 5605.08 5605.18 5605.30 5605.08 5605.05
C2-P14 5603.42 5603.34 5603.38 5603.48 5603.31 5603.32 5603.37 5603.39 5603.38 5603.45 5603.59 5603.34 5603.57
C2-P15 5603.39 5603.32 5603.44 5603.46 5603.30 5603.39 5603.35 5603.36 5603.35 5603.38 5603.56 5603.24 5603.49
C2-P16 5603.85 5603.79 5603.88 5603.89 5603.75 5603.75 5603.78 5603.79 5603.78 5603.81 5603.91 5603.65 5603.83
C2-P17 5607.04 5606.96 5606.99 5607.02 5606.90 5606.98 5607.13 5607.17 5607.29 5607.44 5607.65 5607.45 5607.75
C2-P18 5607.13 5607.08 5607.12 5607.06 5607.00 5607.07 5607.20 5607.22 5607.35 5607.50 5607.70 5607.52 5607.84
C2-P19 5609.08 5609.02 5609.07 5609.10 5609.02 5609.11 5609.24 5609.28 5609.32 5609.32 5609.34 5609.05 5609.28
C2-P20 5610.11 5610.03 5610.05 5610.10 5609.97 5610.04 5610.19 5610.20 5610.35 5610.49 5610.71 5610.55 5610.81
C2-P21 5611.23 5611.12 5611.15 5611.08 5610.99 5611.04 5611.18 5611.19 5611.29 5611.42 5611.61 5611.38 5611.73
C2-P22 5612.24 5612.16 5612.19 5612.19 5612.05 5612.09 5612.20 5612.21 5612.25 5612.29 5612.40 5612.14 5612.83
C2-P23 5613.67 5613.64 5613.68 5613.67 5613.56 5613.61 5613.62 5613.60 5613.66 5613.68 5613.61 5613.45 5613.38
Enerav Fuels Resources (USA) Inc. White Mesa Mill Cell 2 Standpipe Piezometers Water Surface Elevation (ft amsl
Piezometer 2/1/2018 3/16/2018 4/5/2018 5/11/2018 6/14/2018 7/11/2018 8/2/2018 9/6/2018 10/1/2018 11/5/2018 12/4/2018 1/8/2019 2/1/2019
C2-P01 5611.12 5610.98 5610.80 5611.16 5611.19 5611.45 5611.66 5611.65 5611.79 5611.76 5611.09 5610.63 5610.68
C2-P02 5611.58 5611.43 5611.18 5611.43 5611.34 5611.49 5611.77 5611.69 5611.89 5612.00 5611.44 5611.05 5611.09
C2-P03 5611.03 5610.82 5610.60 5610.81 5610.71 5610.83 5610.87 5610.84 5610.99 5611.14 5610.58 5610.18 5610.32
C2-P04 5612.46 5612.31 5611.99 5612.19 5612.05 5612.13 5612.27 5612.22 5612.34 5612.42 5611.92 5611.65 5611.65
C2-P05 5607.40 5607.21 5607.03 5607.13 5606.94 5606.99 5607.00 5606.86 5606.97 5607.09 5606.71 5606.52 5606.59
C2-P06 5608.27 5608.11 5607.84 5607.97 5607.72 5607.75 5607.75 5607.61 5607.74 5607.88 5607.44 5607.28 5607.39
C2-P07 5608.80 5608.66 5608.39 5608.50 5608.17 5608.32 5608.39 5608.31 5608.41 5608.46 5608.07 5607.91 5607.98
C2-P08 5604.51 5604.36 5604.12 5604.28 5604.01 5604.06 5604.05 5603.84 5604.04 5604.24 5603.79 5603.62 5603.76
C2-P09 5602.20 5602.32 5602.08 5602.10 5601.87 5602.04 5601.93 5601.75 5601.97 5602.10 5601.78 5601.58 5601.71
C2-P10 5600.78 5600.69 5600.58 5600.58 5600.29 5600.44 5600.35 5600.19 5600.44 5600.51 5600.10 5600.38 5600.16
C2-P11 5600.76 5600.68 5600.59 5600.47 5600.24 5600.40 5600.33 5600.22 5600.04 5600.44 5600.21 5600.10 5600.07
C2-P12 5596.63 5596.54 5596.60 5596.33 5596.00 5596.40 5596.27 5596.04 5595.99 5596.41 5596.10 5595.96 5596.03
C2-P13 5604.94 5604.81 5604.54 5604.70 5604.44 5604.48 5604.56 5604.48 5604.71 5604.94 5604.51 5604.29 5604.41
C2-P14 5603.17 5602.97 5602.86 5602.94 5602.68 5602.82 5602.74 5602.59 5602.40 5603.00 5602.55 5602.37 5602.50
C2-P15 5603.10 5602.95 5602.79 5602.84 5602.59 5602.71 5602.70 5602.54 5602.33 5602.96 5602.52 5602.36 5602.50
C2-P16 5603.49 5603.32 5603.17 5603.20 5602.97 5603.09 5603.11 5602.92 5603.16 5603.35 5602.90 5602.76 5602.92
C2-P17 5607.28 5607.12 5606.90 5607.02 5606.82 5606.88 5606.87 5606.86 5607.09 5607.34 5606.97 5606.68 5605.82
C2-P18 5607.38 5607.19 5606.87 5606.97 5606.68 5606.68 5606.76 5606.71 5606.98 5607.27 5606.91 5606.62 5606.72
C2-P19 5608.81 5608.62 5608.42 5608.63 5608.60 5608.59 5608.60 5608.50 5608.61 5608.65 5608.08 5607.82 5607.92
C2-P20 5610.43 5610.25 5610.06 5610.13 5609.94 5609.96 5609.97 5609.95 5610.19 5610.44 5610.11 5609.85 5609.91
C2-P21 5611.24 5611.06 5610.76 5610.87 5610.63 5610.62 5610.62 5610.57 5610.83 5611.10 5610.70 5610.41 5610.56
C2-P22 5611.96 5611.78 5611.51 5611.61 5611.33 5611.32 5611.45 5611.23 5611.47 5611.68 5611.27 5610.98 5611.08
C2-P23 5613.12 5612.89 5612.67 5612.50 5612.40 5612.30 5612.41 5612.41 5612.48 5612.55 5612.41 5612.14 5612.02
E Fuels R .. (USA) Inc. White Mesa Mill Cell 2 Standpipe p· ters Water Surface Elevation fft 11
Piezometer 3/20/2019 4/4/2019 5/6/2019 6/5/2019 7/3/2019 8/7/2019 9/5/2019 10/2/2019 11/7/2019 12/4/2019 1/3/2020 2/14/2020 3/3/2020
C2-P01 5608.30 5611.55 5612.30 5612.58 5613.06 5613.30 5613.07 5613.12 5612.56 5612.31 5611.75 5611.76 5611.56
C2-P02 5610.91 5611.31 5612.17 5612.55 5613.00 5613.27 5613.20 5613.35 5612.96 5612.81 5612.32 5612.31 5612.09
C2-P03 5610.89 5611.34 5611.75 5611.76 5612.03 5612.21 5612.24 5612.24 5611.98 5611.93 5611.43 5611.43 5611.23
C2-P04 5611.90 5612.69 5613.39 5613.44 5613.71 5613.75 5613.68 5613.74 5613.36 5613.15 5612.88 5612.90 5612.76
C2-P05 5606.61 5606.93 5607.30 5607.25 5607.33 5607.37 5607.34 5607.39 5607.38 5607.49 5607.10 5607.10 5607.00
C2-P06 5607.16 5607.38 5607.74 5607.81 5608.08 5608.20 5608.20 5608.36 5608.36 5608.40 5608.05 5608.07 5607.97
C2-P07 5608.15 5608.37 5608.51 5608.48 5608.71 5608.81 5608.86 5609.03 5608.90 5608.79 5608.60 5608.59 5608.40
C2-P08 5603.51 5603.63 5604.00 5604.00 5604.16 5604.18 5604.14 5604.24 5604.27 5604.40 5604.08 5604.07 5604.04
C2-P09 5601.54 5601.49 5601.59 5601.58 5601.71 5601.77 5601.75 5601.88 5601.85 5602.25 5601.89 5601.89 5602.09
C2-P10 5599.99 5599.96 5599.98 5599.88 5600.01 5599.99 5599.99 5600.19 5600.18 5600.34 5600.14 5600.13 5600.31
C2-P11 5599.91 5599.92 5599.83 5599.75 5599.87 5599.87 5599.93 5600.26 5600.12 5600.17 5600.27 5600.26 5600.12
C2-P12 5595.85 5595.86 5595.80 5595.72 5595.84 5595.82 5595.83 5596.23 5596.07 5596.33 5596.13 5596.12 5596.49
C2-P13 5604.09 5604..25 5604.58 5604.47 5604.46 5604.47 5604.51 5604.88 5604.86 5604.98 5604.75 5604.75 5604.57
C2-P14 5601.34 5602.35 5602.48 5602.46 5602.55 5602.58 5602.57 5602.73 5602.74 5602.96 5602.58 5602.58 5602.64
C2-P15 5602.08 5602.29 5602.39 5602.32 5602.45 5602.46 5602.44 5602.62 5602.63 5602.78 5602.48 5602.47 5602.52
C2-P16 5602.76 5602.78 5602.86 5602.78 5602.93 5602.93 5602.92 5603.10 5603.09 5603.24 5602.95 5602.94 5602.95
C2-P17 5606.36 5606.43 5606.56 5606.51 5606.57 5606.67 5606.71 5606.90 5606.95 5607.16 5606.79 5606.77 5606.69
C2-P18 5606.19 5606.18 5606.18 5605.95 5605.99 5606.02 5606.05 5606.29 5606.31 5606.48 5606.21 5606.19 5605.97
C2-P19 5608.32 5608.46 5608.52 5608.41 5608.50 5608.55 5608.46 5608.48 5608.28 5608.31 5607.85 5607.84 5607.74
C2-P20 5609.49 5609.44 5609.47 5609.33 5609.34 5609.41 5609.45 5609.66 5609.73 5609.98 5609.63 5609.62 5609.54
C2-P21 5610.06 5610.11 5610.10 5609.93 5609.97 5610.02 5610.04 5610.29 5610.33 5610.58 5610.28 5610.28 5610.19
C2-P22 5610.67 5610.74 5610.74 5610.60 5610.71 5610.76 5610.80 5611.03 5611.01 5611.14 5610.84 5610.83 5610.71
C2-P23 5611.68 5611.75 5611.77 5611.70 5611.74 5611.83 5611.92 5612.20 5612.01 5611.95 5611.87 5611.85 5611.41
--
Piezometer 4/1/2020 5/1/2020 6/2/2020 7/14/2020 8/5/2020 9/2/2020 10/1/2020 11/2/2020 12/2/2020 1/4/2021 2/4/2021 3/1/2021 4/5/2021
C2-P01 5611.43 5611 .66 5611.89 5612.43 5612.60 5612.63 5612.47 5612.09 5611 .81 5611 .33 5611 .12 5610.69 5611 .01
C2-P02 5611.77 5611 .58 5611 .92 5612.38 5612.55 5612.64 5612.55 5612.30 5612.17 5611.78 5611.55 5611 .05 5611 .20
C2-P03 5610.92 5611 .01 5611 .06 5611.40 5611.52 5611 .57 5611.49 5611.29 5611.15 5610.81 5610.62 5610.16 5610.20
C2-P04 5612.54 5612.74 5612.65 5612.97 5612.95 5612.91 5612.75 5612.41 5612.38 5612.05 5611.96 5611.52 5611 .60
C2-P05 5606.75 5606.71 5606.60 5606.68 5606.73 5606.73 5606.75 5606.76 5606.72 5606.56 5606.47 5606.18 5606.34
C2-P06 5607.62 5607.68 5607.49 5607.70 5607.74 5607.75 5607.77 5607.66 5607.70 5607.51 5607.48 5607.05 5607.29
C2-P07 5608.12 5608.18 5608.11 5608.32 5608.36 5608.38 5608.36 5608.17 5608.21 5607.97 5607.95 5607.58 5607.68
C2-P08 5603.73 5603.71 5603.51 5603.65 5603.65 5603.63 5603.63 5603.63 5603.72 5603.58 5603.57 5603.16 5603.44
C2-P09 5601 .78 5601.80 5601.64 5601.70 5601.72 5601 .69 5601.76 5601.74 5601.86 5601.70 5601.79 5601.47 5601.70
C2-P10 5599.86 5599.93 5599.75 5599.86 5599.86 5599.83 5599.91 5599.78 5600.07 5599.84 5599.93 5599.80 5599.80
C2-P11 5599.61 5599.58 5599.47 5599.59 5599.60 5599.62 5599.72 5599.62 5599.98 5599.78 5599.78 5599.79 5599.52
C2-P12 5595.75 5595.68 5595.57 5595.69 5595.74 5595.77 5595.85 5595.65 5596.18 5595.81 5595.81 5596.04 5595.51
C2-P13 5604.17 5604.02 5603.86 5603.99 5604.02 5604.16 5604.13 5604.21 5604.33 5604.15 5604.12 5603.71 5603.88
C2-P14 5602.34 5602.34 5602.14 5602.28 5602.31 5602.29 5602.34 5602.28 5602.38 5602.19 5602.20 5601.93 5602.14
C2-P15 5602.17 5602.20 5602.01 5602.17 5602.19 5602.20 5602.19 5602.08 5602.04 5602.01 5602.02 5601.89 5601.93
C2-P16 5602.68 5602.66 5602.49 5602.64 5602.63 5602.63 5602.59 5602.44 5602.58 5602.34 5602.38 5602.23 5602.30
C2-P17 5606.36 5606.30 5606.11 5606.26 5606.29 5606.34 5606.43 5606.47 5606.52 5606.39 5606.28 5605.86 5606.08
C2-P18 5605.59 5605.40 5605.12 5605.20 5605.26 5605.32 5605.29 5605.35 5605.42 5605.31 5605.23 5604.70 5604.81
C2-P19 5607.49 5607.50 5607.40 5607.58 5607.63 5607.56 5607.48 5607.29 5607.21 5606.98 5606.95 5606.56 5606.88
C2-P20 5609.30 5609.15 5608.98 5609.07 5609.14 5609.22 5609.26 5609.34 5609.38 5609.29 5609.19 5608.78 5608.97
C2-P21 5609.83 5609.70 5609.49 5609.60 5609.65 5609.71 5609.77 5609.79 5609.90 5609.83 5609.77 5609.26 5609.44
C2-P22 5610.37 5610.29 5610.07 5610.20 5610.28 5610.30 5610.33 5610.26 5610.37 5610.21 5610.16 5609.61 5609.84
C2-P23 5611.19 5610.97 5610.85 5610.88 5610.94 5611 .01 5610.96 5610.89 5610.89 5610.78 5610.61 5610.41 5610.15
. .. '
Piezometer 5/5/2021 6/3/2021 7/9/2021 8/10/2021 9/8/2021 1on12021 11/4/2021 12/3/2021 1/13/2022 2/4/2022 3/2/2022 4/6/2022 5/2/2022
C2-P01 5610.79 5611.04 5611.36 5611 .63 5611.63 5611.71 5611.44 5611 .21 5610.66 5610.54 5610.29 5610.49 5610.42
C2-P02 5610.91 5611 .03 5611 .23 5611.50 5611 .58 5611 .72 5611.57 5611.40 5610.86 5610.83 5610.39 5610.60 5610.45
C2-P03 5610.06 5610.16 5610.30 5610.45 5610.50 5610.62 5610.49 5610.32 5609.92 5609.78 5609.46 5609.62 5609.46
C2-P04 5611.37 5611.47 5611.61 5611.76 5611.77 5611 .83 5611.64 5611.58 5611 .13 5611.17 5610.85 5610.98 5610.84
C2-P05 5606.05 5606.03 5606.03 5606.06 5606.08 5606.18 5606.14 5606.07 5605.91 5605.79 5605.62 5605.64 5605.49
C2-P06 5606.90 5606.96 5606.96 5607.03 5606.98 5607.10 5607.01 5607.00 5606.74 5606.69 5606.47 5606.58 5606.38
C2-P07 5607.44 5607.52 5607.55 5607.62 5607.59 5607.65 5607.52 5607.49 5607.19 5607.24 5607.02 5607.09 5606.97
C2-P08 5603.04 5603.07 5603.06 5603.07 5603.08 5603.25 5603.22 5603.20 5602.97 5602.94 5602.72 5602.85 5602.65
C2-P09 5601 .36 5601.38 5601.37 5601.37 5601.33 5601 .26 5601.39 5601.41 5601.38 5601.22 5601 .17 5601.22 5601 .05
C2-P10 5599.40 5599.54 5599.49 5599.48 5599.41 5599.52 5599.44 5599.58 5599.39 5599.42 5599.31 5599.35 5599.20
C2-P11 5599.32 5599.37 5599.39 5599.40 5599.30 5599.50 5599.39 5599.42 5599.19 5599.38 5599.14 5599.11 5598.99
C2-P12 5595.28 5595.26 5595.26 5595.29 5595.23 5595.41 5595.24 5595.36 5594.98 5595.21 5594.98 5594.91 5594.75
C2-P13 5603.52 5603.57 5603.58 5603.68 5603.68 5603.86 5603.80 5603.81 5603.52 5603.54 5603.31 5603.44 5603.22
C2-P14 5601.63 5601.77 5601.76 5601 .79 5601.83 5601 .99 5601.92 5601 .96 5601.82 5601 .69 5601.62 5601.68 5601 .58
C2-P15 5601 .50 5601.66 5601.62 5601.68 5601.70 5601.87 5601.79 5601 .91 5601.68 5601.60 5601.51 5601.57 5601.47
C2-P16 5601 .83 5601.98 5601 .96 5602.07 5602.08 5602.24 5602.14 5602.23 5602.03 5601.73 5601 .88 5601.67 5601 .87
C2-P17 5605.55 5605.68 5605.66 5605.78 5605.89 5606.06 5606.05 5606.04 5605.81 5605.40 5605.52 5605.25 5605.48
C2-P18 5604.22 5604.35 5604.29 5604.46 5604.55 5604.73 5604.70 5604.75 5604.43 5604.14 5604.14 5603.91 5604.06
C2-P19 5606.41 5606.60 5606.64 5606.75 5606.78 5606.82 5606.66 5606.64 5606.47 5606.08 5606.27 5606.05 5606.33
C2-P20 5608.48 5608.63 5608.59 5608.71 5608.83 5608.96 5608.99 5608.98 5608.73 5608.39 5608.49 5608.22 5608.45
C2-P21 5608.86 5609.00 5608.96 5609.09 5609.18 5609.36 5609.39 5609.41 5609.25 5608.81 5608.87 5608.62 5608.84
C2-P22 5609.31 5609.47 5609.46 5609.59 5609.63 5609.77 5609.71 5609.76 5609.61 5609.21 5609.24 5609.07 5609.24
C2-P23 5610.01 5609.94 5609.94 5610.04 5610.11 5610.16 5610.15 5610.07 5609.84 5609.91 5609.66 5609.66 5609.55
-.. E Fuels R (USA) Inc. White Mesa Mill Cell 2 Standpipe P' ters Water Surface Elevation {ft I}
Piezometer 6/22/2022 7/6/2022 8/4/2022 9/1/2022 1on12022 11/8/2022 12/1/2022 1/10/2023 2/2/2023 3/9/2023 4n12023 5/4/2023 6/1/2023
C2-P01 5610.51 5610.74 5610.98 5611.22 5611.12 5611.11 5610.89 5610.39 5609.92 5609.83 5609.93 5610.53 5610.82
C2-P02 5610.32 5610.53 5610.77 5611.01 5610.99 5611.14 5610.98 5610.52 5610.02 5609.87 5609.76 5610.18 5610.49
C2-P03 5609.33 5609.49 5609.65 5609.86 5609.80 5609.90 5609.78 5609.40 5608.96 5608.87 5609.12 5609.46 5609.59
C2-P04 5610.71 5610.90 5611.07 5611.16 5611.12 5611.22 5611.08 5610.78 5610.42 5610.32 5610.27 5611.01 5611.47
C2-P05 5605.31 5605.36 5605.38 5605.49 5605.43 5605.51 5605.50 5605.32 5605.02 5605.00 5605.12 5605.38 5605.32
C2-P06 5606.13 5606.26 5606.30 5606.37 5606.27 5606.39 5606.37 5606.21 5605.81 5605.72 5605.62 5605.83 5605.90
C2-P07 5606.77 5606.90 5606.96 5606.97 5606.93 5607.00 5606.92 5606.77 5606.50 5606.48 5606.40 5606.60 5606.65
C2-P08 5602.38 5602.54 5602.57 5602.68 5602.59 5602.77 5602.77 5602.61 5602.19 5602.18 5602.17 5602.56 5602.58
C2-P09 5600.93 5600.93 5600.90 5600.92 5600.92 5600.94 5600.99 5600.94 5600.62 5600.54 5600.56 5600.63 5600.56
C2-P10 5598.98 5599.07 5599.07 5600.01 5599.96 5599.97 5599.96 5599.93 5599.63 5599.55 5599.46 5599.60 5599.58
C2-P11 5598.84 5598.90 5598.87 5598.88 5599.05 5599.07 5599.02 5598.90 5598.77 5598.64 5598.50 5598.55 5598.55
C2-P12 5594.50 5594.54 5594.53 5594.53 5594.71 5594.63 5594.59 5594.46 5594.30 5594.15 5594.05 5594.16 5594.23
C2-P13 5603.00 5603.16 5603.24 5603.32 5603.32 5603.51 5603.49 5603.30 5602.94 5602.87 5602.79 5602.98 5602.97
C2-P14 5601.33 5601.42 5601.45 5601.53 5601.54 5601.64 5601.68 5601.53 5601.17 5601.11 5601.08 5601.31 5601.26
C2-P15 5601.24 5601.34 5601.37 5601.44 5601.44 5601.53 5601.54 5601.35 5601.10 5601.08 5601.01 5601.23 5601.20
C2-P16 5601.64 5601.76 5601.79 5601.85 5601.82 5601.92 5601.92 5601.76 5601.51 5601.49 5601.44 5601.67 5601.65
C2-P17 5605.16 5605.25 5605.33 5605.44 5605.43 5605.74 5605.78 5605.51 5605.05 5604.99 5604.87 5605.06 5604.92
C2-P18 5603.65 5603.78 5603.88 5604.04 5604.05 5604.37 5604.41 5604.18 5603.75 5603.65 5603.46 5603.62 5603.51
C2-P19 5606.12 5606.25 5606.33 5606.44 5606.33 5606.39 5606.34 5606.19 5605.81 5605.80 5605.91 5606.34 5606.43
C2-P20 5608.17 5608.24 5608.31 5608.43 5608.45 5608.70 5608.73 5608.33 5608.04 5607.98 5607.90 5608.05 5607.92
C2-P21 5608.42 5608.53 5608.64 5608.81 5608.80 5609.14 5609.16 5608.91 5608.47 5608.38 5608.23 5608.42 5608.29
C2-P22 5608.86 5608.99 5609.08 5609.21 5609.19 5609.44 5609.47 5609.24 5608.84 5608.78 5608.64 5608.82 5608.76
C2-P23 5609.33 5609.37 5609.46 5609.59 5609.66 5609.83 5609.77 5609.52 5609.45 5609.36 5609.24 5609.24 5609.44
2216500
C2-P01 + C2-P02 +
2217000
C2-03
2217500 2218000
C2-P13 +
2218500
C2-P17 +
2219000
C2-P20
2219500
0 0 ~ co
~
~ C2-P14 f-,f--7~~~,~-=--:-:1------+---++---___,,..~P"f7,l-_;.--1--l-----!----------'LL----j_l
C2-P15 +
C2-P16 +
~
0 0 0 0 i,--------~r----------r---------r---------1----------~---------l----------L----J_~ §
2216500 2217000 2217500
0
'61 V ENERGY FUELS
0
200
50
400
Feet
100
Meters
2218000
200
2218500
800 N
A
2219000 2219500
ENERGY FUELS INC.
225 Union Blvd, Suite 600
Lakewood, Colorado 80228
Cell 2
April 2023 Piezometer Contours
Date: 7/18/2023 JA
0 0 0 ... ~ ~
0 0 .., ..,
"' ~
2216500 2217000 2217500 2218000 2218500 2219000 2219500
0 0 .., ...
/ \ ~
\ "1" ~
0 co in
C2-03 C2-P05 C2-P08 C2-P13 C2-P17 I + + + 't C2-P20
~
C2-P01 C2-P02 ss,a I q,. \
+ + (0
0 (0 c2rt'os
C~-P21
C2-P14 + 0 0 0 ... ~
C2-~
' C2-P15 ~
/C2-P12 \ +
~ & <9
/3
C2-P23 +
~
,---------,---------t----------t----------t----------~---------!----------L----J_~ "' ~ ~
2216500 2217000 2217500
0
~, ENERGYFUELS
0
200
50
400
Feet
100
Meters
2218000
200
2218500
800 N
A
2219000 2219500
ENERGY FUELS INC .
225 Union Blvd, Suite 600
Lakewood, Colorado 80228
Cell 2
May 2023 Piezometer Contours
Date: 7 /1 8/2023 JA
2216500
C2-P01 + -----_, __ _
C2-P02 + -------
2217000 2217500
\
r +os
C2-P06
'<I" 0 co LO
C2-P08 +
2218000
C2-P13 ,...
C2-P15 +
C2-A16 +
2218500
C2-P17 +
2219000
C2-A20
C2-P21 +
2219500
0 0 0 ~T ---------,---------t----------t----------}-------------+----------t-----------L----J_
2216500 2217000 2217500
0
?;:/'J ENERGY FUELS
0
200
50
400
Feet
100
Meters
2218000 2218500
800 N
200 A
2219000 2219500
ENERGY FUELS INC.
225 Union Blvd Suite 600
Lakewood, Colorado 80228
Cell 2
June 2023 Piezometer Contours
Date: 7/18/2023 JA
5,615
5,610
5,605 -~ -C
0
+"' ta > Cl.I
w
Cl.I > Cl.I 5,600 ...I
lo.
Cl.I +"' ta s
5,595 -+-C2-P01 -C2-P02 •--o-C2-P03
-C2-P07 --+-C2-P08 --e-C2-P09
~C2-P13 -+-C2-P14 -C2-P15
--+-C2-P19 --,tE-C2-P20 --B-C2-P21
5,590
Jun-16 Dec-16 Jun-17 Dec-17 Jun-18
-~C2-P04
--e-C2-P10
C2-P16
---+-C2-P22
Dec-18
Figure 2 -Cell 2 Standpipe Piezometers
Water Level Elevations
~C2-P05 --+-C2-P06
---+-C2-Pll ---&-C2-P12
Notes:
_.,_C2-P17 -,+---(2-PlS 1. Pieozometer C2-P01 reading for Mar 20, 2019 was
erroneous due to an issue with the water level meter.
----&-C2-P23 2. Piezometer C2-P10 was hit by a vehicle on September
1, 2022. Soil fell in the casing and the water level
iricieased oi/ about 2 te-et: -·
Jun-19 Dec-19 Jun-20 Dec-20 Jun-21 Dec-21 Jun-22
Date
(2)
Dec-22 Jun-23 Dec-23
Attachment D
n
tD --N
V, --· 3
tD
"' C
al -:::::s
I
N
0
0 \0
I
N
0 N
c.,J
+ Vl rD .... iii"
V,
N
C: :::l rD DJ ....
V, rD ~-rD V,
N
w 0 0 0
N \D 0 0
r.
f
N 00 0 0
Feet Below Top of Standpipe
N --.J 0 0
N en 0 0
N Ln 0 0
N +:> 0 0
N w
0 0
N N
0 0
N I-' 0 0
N 0
0 0
1/30/2009
6/30/2009
11/30/2009
4/30/2010
9/30/2010
2/28/2011
7/31/2011
12/31/2011
5/31/2012
10/31/2012
3/31/2013
8/31/2013
1/31/2014
6/30/2014
11/30/2014
4/30/2015
9/30/2015
2/29/2016
7/31/2016
12/31/2016
5/31/2017
10/31/2017
3/31/2018
8/31/2018
1/31/2019
6/30/2019
11/30/2019
4/30/2020
9/30/2020
2/28/2021
7/31/2021
12/31/2021
5/31/2022
10/31/2022
3/31/2023
Attachment E
This attachment has been deliberately left blank.
Attachment F
White Mesa Mill -Discharge Minimization Technology Monitoring Plan 12/16 Revision: EFRl 12.4
Page 25 of25
ATTACHMENT C
TABLES
Table lA
Calculated Action leakage Rates
for Various head Conditions
Cell 4A White Mesa Mill
Blanding, Utah
Head above Liner System (feet) Calculated Action leakage Rate
5
10
15
20
25
30
35
37
( gallons / acre / day )
.
Table lB
Calculatea. Action leakage Rates
for Various head Conditions
Cell 4B White Mesa Mill
Blanding, Utah
222.04
314.01
384.58
444.08
496.50
543.88
587.46
604.01
Head above Liner System (feet) Calculated Action leakage Rate
( gallons / acre / day )
5 211.40
10 317.00
15 369.90
20 422.70
25 475.60
30 528.40
35 570.00
37 581.20
Calculation of Maximum Daily Allowable LDS Flow Volume for Varying Head Conditions in
Cells 4A and 4B
The equation for the calculation of maximum daily allowable flow volume in Cells 4A and 4B is
as follows:
Step 1)
Where:
Step 2)
Step 3)
Step 4)
Elevation I-Elevation 2 = Head (ft.)
Elevation 1 is the maximum elevation in feet measured during the reporting
period.
Elevation 2 is the FML elevation in feet.
Determine Calculated Action Leakage Rate from Table IA (for Cell 4A) or Table
IB (for Cell 4B) using the head calculated in Step 1 above. If the head calculated
in step 1 above falls between two values in the Head Above Liner System (feet)
column, then the closer of these two values will be used to determine the -
Calculated Action Leakage Rate.
Calculate the acres of tailings cell fluids based on the area of the base of the cell,
the head, and the angle ·of the sideslopes of the cell.
Action Leakage Rate (from Table IA or IB) X Acres of Tailings Cell Fluids=
Maximum Daily Allowable Flow Volume
Max head on Cell 4A FML
Max elevation (ft.)
FML elevation (ft.)
Head (ft.)
From BAT O&M Table lA (gallon/acre/day)
Acres of fluid based on maximum level (acres)
Max allowable flow rate (gal/day)
4A-Q2 2023
5588.01
5555.55
32.46
543.88
39.32
21,385
Max head on Cell 4B FML
Max elevation (ft.)
FML elevation (ft.)
Head (ft.)
From BAT O&M Table 1B (gallon/acre/day)
Acres of fluid based on maximum level (acres)
Max allowable flow rate (gal/day)
4B -Q2 2023
5579.10
5557.50
21.60
422.70
34.57
14,613
Cell 4A LDS Monitoring Information
April 2023 May2023 June 2023
Weekly measurements in
inches from transducer at Weekly measurements in Weekly measurements in
the bottom of the LDS Flow Meter inches from transducer at the Flow Meter inches from transducer at the Flow Meter
Date sump. in Gallons Date bottom of the LDS sump. in Gallons Date bottom of the LDS sump. in Gallons
4/1/23 8.6 879969 5/1/23 14.9 1042914 6/1/23 14.5 1256243
4/2/23 12.6 887868 5/2/23 14.1 1051352 6/2/23 13.4 1264029
4/3/23 13.8 897559 5/3/23 14.2 1059185 6/3/23 12.9 1271007
4/4/23 13.9 908066 5/4/23 6.7 1068973 6/4/23 13.6 1277919
4/5/23 7.2 920677 5/5/23 12.4 1080743 6/5/23 14.3 1283953
4/6/23 7.5 934196 5/6/23 14.8 1090131 6/6/23 14.6 1290844
4/7/23 14.3 939021 5/7/23 14.3 1098997 6/7/23 13.8 1298775
4/8/23 9.5 948696 5/8/23 12.0 1107016 6/8/23 13.3 1304856
4/9/23 12.6 956200 5/9/23 12.8 1115176 6/9/23 12.9 1312399
4/10/23 7.5 965374 5/10/23 13.8 1118859 6/10/23 11.3 1318025
4/11/23 14.5 972407 5/11/23 11.3 1125086 6/11/23 14.7 1324384
4/12/23 7.3 979373 5/12/23 9.5 1130204 6/12/23 14.5 1330515
4/13/23 10.3 983897 5/13/23 13.2 1132845 6/13/23 13.4 1337487
4/14/23 12.2 988341 5/14/23 12.6 1139480 6/14/23 13.4 1344652
4/15/23 14.0 992745 5/15/23 13.2 1150605 6/15/23 13.3 1351771
4/16/23 13.6 996995 5/16/23 11.3 1156748 6/16/23 13.4 1356403
4/17/23 7.3 1001693 5/17/23 5.3 1167955 6/17 /23 14.0 1361946
4/18/23 10.9 1004582 5/18/23 13.2 1175990 6/18/23 7.7 1366810
4/19/23 14.8 1006170 5/19/23 13.7 1180562 6/19/23 13.9 1371301
4/20/23 11.5 1009310 5/20/23 6.4 1185973 6/20/23 13.7 1375618
4/21/23 13.8 1011664 5/21/23 14.6 1192142 6/21/23 12.9 1381164
4/22/23 14.0 1013835 5/22/23 14.8 1198784 6/22/23 14.4 1385584
4/23/23 5.7 1016080 5/23/23 14.4 1205810 6/23/23 14.0 1390094
4/24/23 13.7 1017836 5/24/23 12.7 1212894 6/24/23 12.9 1393125
4/25/23 11.9 1019708 5/25/23 13.8 1219120 6/25/23 14.1 1395393
4/26/23 12.3 1020766 5/26/23 14.8 1223924 6/26/23 14.3 1397243
4/27/23 11.4 1023632 5/27/23 12.2 1230083 6/27/23 12.9 1398329
4/28/23 14.3 1025496 5/28/23 14.3 1235566 6/28/23 14.3 1398689
4/29/23 11.9 1029971 5/29/23 12.4 1244532 6/29/23 14.8 1399051
4/30/23 13.3 1036191 5/30/23 13.8 1246311 6/30/23 14.6 1399410
5/31/23 13.2 1251403
Total Gallons Pumped per Month 156,222 215,212 148,007
Total Gallons pumped for Q2 519,441
Cell 4B LDS Monitoring Information
April 2023 May 2023 June 2023
Weekly measurements
Weekly measurements in Weekly measurements in in inches from
inches from transducer at the Flow Meter inches from transducer at the Flow Meter transducer at the Flow Meter
Date bottom of the LDS sump. in Gallons Date bottom of the LDS sump. in Gallons Date bottom of the LDS in Gallons
4/1/23 4.72 450 -5/1/23 4.72 488 6/1/23 5.55 605
4/2/23 4.72 450 5/2/23 4.72 488 6/2/23 5.55 605
4/3/23 4.72 450 5/3/23 4.72 488 6/3/23 5.55 605
4/4/23 4.72 450 5/4/23 4.72 488 6/4/23 5.55 605
4/5/23 4.72 450 5/5/23 4.72 488 6/5/23 5.55 605
4/6/23 4.72 450 5/6/23 4.72 488 6/6/23 5.55 605
4/7/23 4.72 450 5/7/23 4.72 488 6/7/23 5.55 605
4/8/23 4.72 450 5/8/23 4.72 488 6/8/23 6.39 605
4/9/23 4.72 450 5/9/23 4.72 488 6/9/23 6.39 605
4/10/23 4.72 450 5/10/23 4.72 488 6/10/23 6.39 605
4/11/23 4.72 450 5/11/23 4.72 488 6/11/23 6.39 605
4/12/23 4.72 450 5/12/23 4.72 488 6/12/23 6.39 605
4/13/23 4.72 450 5/13/23 4.72 488 6/13/23 6.39 605
4/14/23 4.72 450 5/14/23 4.72 488 6/14/23 6.39 605
4/15/23 4.72 450 5/15/23 4.72 488 6/15/23 6.39 605
4/16/23 4.70 450 5/16/23 4.72 488 6/16/23 6.39 605
4/17/23 4.72 450 5/17/23 4.72 488 6/17/23 6.39 605
4/18/23 4.72 450 5/18/23 4.72 488 6/18/23 6.39 605
4/19/23 4.72 450 5/19/23 4.72 600 6/19/23 6.39 605
4/20/23 4.72 450 5/20/23 4.72 604 6/20/23 6.39 605
4/21/23 4.72 488 5/21/23 4.72 604 6/21/23 6.39 605
4/22/23 4.72 488 5/22/23 4.72 604 6/22/23 6.39 605
4/23/23 4.72 488 5/23/23 4.72 604 6/23/23 6.39 606
4/24/23 4.72 488 5/24/23 4.72 604 6/24/23 6.39 606
4/25/23 4.72 488 5/25/23 4.72 605 6/25/23 6.39 606
4/26/23 4.72 488 5/26/23 4.72 605 6/26/23 6.39 606
4/27/23 4.72 488 5/27/23 4.72 605 6/27/23 6.39 606
4/28/23 4.72 488 5/28/23 4.72 605 6/28/23 6.39 664
4/29/23 4.72 488 5/29/23 5.55 605 6/29/23 6.39 664
4/30/23 4.72 488 5/30/23 5.55 605 6/30/23 6.39 664
5/31/23 5.55 605
Total Gallons Pumped per Month 38 117 59
Total Gallons pumped for Q2 214
Cell 1, Cell 2, and Cell 3 LDS Monitoring Information -Second Quarter 2023
Cell 1 Cell 2 Cell 3
Measurement in inches Measurement in inches Measurement in inches
Date from transducer at the Date from transducer at the Date from transducer at the
bottom of the LDS sump. bottom of the LDS sump. bottom of the LDS sump.
4/7/2023 Dry 4/7/2023 Dry 4/7/2023 Dry
4/14/2023 Dry 4/14/2023 Dry 4/14/2023 Dry
4/21/2023 Dry 4/21/2023 Dry 4/21/2023 Dry
4/28/2023 Dry 4/28/2023 Dry 4/28/2023 Dry
Cell 1 Cell 2 Cell 3
Measurement in inches Measurement in inches Measurement in inches
Date from transducer at the Date from transducer at the Date from transducer at the
bottom of the LDS sump. bottom of the LDS sump. bottom of the LDS sump.
5/5/2023 Dry 5/5/2023 Dry 5/5/2023 Dry
5/12/2023 Dry 5/12/2023 Dry 5/12/2023 Dry
5/19/2023 Dry 5/19/2023 Dry 5/19/2023 Dry
5/26/2023 Dry 5/26/2023 Dry 5/26/2023 Dry
Cell 1 Cell 2 Cell 3
Measurement in inches Measurement in inches Measurement in inches
Date from transducer at the Date from transducer at the Date from transducer at the
bottom of the LDS sump. bottom of the LDS sump. bottom of the LDS sump.
6/2/2023 Dry 6/2/2023 Dry 6/2/2023 Dry
6/9/2023 Dry 6/9/2023 Dry 6/9/2023 Dry
6/16/2023 Dry 6/16/2023 Dry 6/16/2023 Dry
6/22/2023 Dry 6/22/2023 Dry 6/22/2023 Dry
6/29/2023 Dry 6/29/2023 Dry 6/29/2023 Dry
Attachment G
White Mesa Mill -Discharge Minimization Technology Monitoring Plan
ATTACHMENT A-4
01122 Revision: EFRI 13.0
Page 21 of26
ANNUAL DECONTAMINATION PAD INSPECTION
Date of Inspection: :S/~ /a..o~l-S/10/~0;1..3
Inspector: Decf\ L ~l'l1CM , ,.-~11nc.r ~o 11;Jo'f
New Decontamination Pad:
Are there any cracks on the wash pad surface greater than 1/8 inch of separation?
Is there any significant deterioration or damage of the pad surface? __ Yes _LNo
Findings:
Repair Work Required:
i=;lle~ ~" v,.br...s. ~Otl.$ u:, ,-~'h §;'k,-+le)(
'6 I I I :Z.oX>
Existing Decontamination Pad: 5 / ;;,./ 2.o;n
Were there any observed problems with the steel tank? __ Yes __x_No
Repair Work Required:
ivo er pa ;r i,>or1< """'' 01c,JJ
Note: For the annual inspection of the Existing and New Decontamination, the annual inspection
findings, any repairs required, and repairs completed, along with a summary of the weekly
inspections of the Decontamination Pads, shall be cliscussed in the 2nd Quarter report, due September
1 of each calendar year.
New Decon Pad
5/9/2023
Before
I ~ • .
mumu~ ID11:a ,-. -,. ~
.~i~'\
·-.. ___ Iii
New Decon Pad
5/9/2023
Before
New Decon Pad
5/9/2023
Before
New Decon Pad
5/10/2023
Complete
New Decon Pad
5/10/2023
Complete
New Decon Pad
5/10/2023
Complete
New Decon Pad
5/10/2023
Complete
Existing Decon Pad
5/1/2023
Before
Existing Decon Pad
5/1/2023
Before
Existing Decon Pad
5/1/2023
Before
Existing Decon Pad
5/2/2023
Complete
Existing Decon Pad
5/2/2023
Complete
Existing Decon Pad
5/2/2023
Complete
White Mesa Mill -Discharge Minimization Technology Monitoring Plan
ATTACHMENT A-5
01/22 Revision: EFRI 13.0
Page 22 of26
AMMONIUM SULFATE COVER AREA INSPECTION
Date of Inspection: ~ /,?.3/ ot.0~3
Ammonium Sulfate Concrete Pad:
Are there any cracks on the concrete pad surface greater than 1 /8 inch of separation?
_Yes /No
Is there any significant deterioration or damage of the pad surface? __ Yes / No
Findings:
ti tc~ !."'rf:,<. CA"11.c.~ "6Jc-r& ob1.cr✓eJ..
Repair Work Required:
F:nel. w--G.« cocJc::, lo3i !h ~,·kA. Dex .
Ammonium Sulfate Asphalt Cover:
Are there any cracks on asphalt surface greater than 1/8 inch of separation?
_Y~s /No
Is there any significant deterioration or damage of the asphalt surface? __ Yes / No
Findings:
·At. l, ... U i,li -cJ-1; c.ou.\.). b< re$ec,.l~d.
Repair Work Required:
11s~I ! \,)~.) c.lcaod ..,,,J look ol<.'j .
Note: For the quarterly inspection of the Ammonium Sulfate Cover Area, the quarterly inspection findings,
any repairs required, and repairs completed, shall be discussed in the associated quarterly DMT Report. For
the annual inspection of the Ammonium Sulfate Cover Area. the annual inspection findings, any repairs
required, and repairs completed, along with a summary of the weekJy inspections of the Decontamination Pads.
shall be discussed in the 2nd Quarter report, due September 1 of each calendar year.
..
Ammonium Sulfate
5/23/2023
Before
I
I I
..
Ammonium Sulfate
5/23/2023
Before
Ammonium Sulfate
5/23/2023
Before
/
Ammonium Sulfate
5/23/2023
Complete
Ammonium Sulfate
5/23/2023
Complete
I
--I • -,', I
·"It I ' , '. ---
Ammonium Sulfate
5/23/2023
Complete
White Mesa Mill -Discharge Minimization Technology Monitoring Plan
ATTACHMENT A-6
01/22 Revision: EFRI 13.0
Page 23 of26
ANNUAL USED/WASTE OIL AND FUEL TANK INSPECTION
Date of Inspection: W: l«lf ho~'3
Are there any anomalies on tanks including dents or rusty areas?
_Yes /No
Comments:
Inspect the following as appropriate. Note any leakage, seepage, breakage or unusual conditio~s.
Pipeline Joints:_~ ....... ,_ _________________________ _
Pipeline Supports:.,j,,..,...""'--------------------------+
Valves: _ _,,(r ....... """"---------------------------
Are there any cracks on the concrete surfaces (if present) greater than 1/8 inch of separation?
_Yes...!...No
Is there any significant deterioration or damage of the concrete surfaces (if present)?
__ Yes_LNo
Findings:
A t,:..l 5tu.cto.c<-C.CN,KS. v>erc. o b s e<Vd
Repair Work Required:
Date Repair Work Completed (if applicable): S/~3/~o~
Fuel Tanks
5/19/2023
Before
Fuel Tanks
5/19/2023
Before
Fuel Tanks
5/24/2023
Complete
Fuel Tanks
5/24/2023
Complete
White Mesa Mill -Discharge Minimization Technology Monitoring Plan
ATTACHMENT A-6
01/22 Revision: EFRI 13.0
Page 23 of26
ANNUAL USED/WASTE OIL AND FUEL TANK INSPECTION
Date of Inspection: ':') / :2.-:\ I ~o~~
Are there any anomalies on tanks including dents or rusty areas?
_Yes /No
Inspect the following as appropriate. Note any leakage, seepage, breakage or unusual conditions.
Pipeline Joints:_~C,._o~o~~-------------------------Pipeline Supports:__._=,:..J. _________________________ +
Valves: C,a,cl.
Point(s) ofDischarge:~(J:.JU<....___ ______________________ _
Are there any cracks on the concrete surfaces (if present) greater than 1/8 inch of separation?
_Yes /40
Is there any ~nificant deterioration or damage of the concrete surfaces (if present)?
__ Yes ~o
Findings:
Repair Work Required: \ •
1=:11~~. e,rAcks IN• t), ~,-k,. -Fi'OaC
Date Repair Work Completed (if applicable): 5/~ //I.JI;-)
Used Oil Impound
5/23/2023
Before
,
Used Oil Impound
5/23/2023
Before
Used Oil Impound
5/23/2023
Complete
White Mesa Mill -Discharge Minimization Technology Monitoring Plan
ATTACHMENTA-7
01/22 Revision: EFRI 13_0
Page 24 of26
ANNUAL HCI SECONDARY CONTAINMENT CONCRETE INSPECTION
Date of Inspection: 5/1'1/'-<>~3
Are there any anomalies on tanks?
_Yes..:l_No
Inspect the following as appropriate. Note any leakage, seepage, breakage or unusual conditions.
PipelineJoints:_--=-=-=-=--------------------------Pipeline Snpports:_.1.Li,lJ,u,_ ________________________ +
Valves: ooJ.
Point(s) ofDischarge:_.._,o........,,--______________________ _
Are there any cracks on the concrete surfaces (if present) greater than l/8 inch of separation?
Is there any significant deterioration or damage of the concrete surfaces (if present)?
__x_ Yes __ No
Findings:
Ac.:J. L-,.,~;"j lh, hp ~"'r¼c<
Repair Work Required:
&aAlc. o.J ¼be. h,.,c.
Date Repair Work Completed (if applicable): ~Jrc:t l~o~-::,
HCL Inspection
5/19/2023
Before
HCL Inspection
5/19/2023
Before
HCL Inspection
5/19/2023
Before
HCL Inspection
5/19/2023
Complete
HCL Inspection
5/19/2023
Complete
HCL Inspection
5/19/2023
Complete
Attachment H
f
UTAH
*
•
ENERGY FUELS RESOURCES (USA), INC.
WHITE MESA MILL
San Juan County, Utah
Feedstock Storage Area Map
CJ Feedstock Storage Area
Date: January 2022
Source: Energy Fuels, 2022
-···--· .. ···~ .. r.M~»
\
....
N
A
0 50 100 200
Feet
..... __ ........
DATE: Y-\l-t,l ... !Sd')I
\
(
ti 1 •I I
I ENERGY FUELS RESOURCES (USA), INC.
WHITE MESA MILL N
San Juan County, Utah A Feedstock Storage Area Map
UTAH 0 50 100 200 c::] Feedstock Storage Area Feet
* Date: January 2022
Source: Energy Fuels, 2022
: ,.
~
1
UTAH
*
•
\· ,' '
ENERGY FUELS RESOURCES (USA), INC.
WHITE MESA MILL
San Juan County, Utah
Feedstock Storage Area Map
D Feedstock Storage Area
Date: January 2022
Source: Energy Fuels, 2022
N
A
D 50 100 200
Feet
NU••-....... , ••• • DATE: h}-'l,... 7--l.-..) • ... lSrl?II
\
' l .
l l
..
I ENERGY FUELS RESOURCES (USA), INC.
WHITE MESA MILL N
San Juan County, Utah A Feedstock Storage Area Map
UTAH 0 50 100 200 c:J Feedstock Storage Area Feet
* Date: January 2022
Source: Energy Fuels, 2022
UTAH
DATE: .s-I 'f h-1 I
ENERGY FUELS RESOURCES (USA), INC.
WHITE MESA MILL
San Juan County, Utah
Feedstock Storage Area Map
CJ Feedstock Storage Area
Date: January 2022
Source: Energy Fuels, 2022
\
N
A
0 50 100 200
Feet
Pa.,slSrl!I,
l
\.
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l ENERGY FUELS RESOURCES (USA), INC.
WHITE MESA MILL N
San Juan County, Utah A Feedstock Storage Area Map
UTAH 0 50 100 200 D Feedstock Storage Area Feet
* Date: January 2022
Source: Energy Fuels, 2022
.. , .. _ .. ...,,,_
~DJ!6
\
I'
...
I ENERGY FUELS RESOURCES (USA), INC.
WHITE MESA MILL N
San Juan County, Utah
Feedstock Storage Area Map A
UTAH 0 50 100 200 c:J Feedstock Storage Area Feet
* Date: January 2022
Source: Energy Fuels, 2022
r W...,,,_Mll~M.IDJ,..~Tiri-&..prl,,,,
. :
'
I
UTAH
*
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' -.,, .
•
,, .. ,. 1~-· ,!( '
d l
:r·;.it
-I I
f! ; j
f
1•
ENERGY FUELS RESOURCES (USA), INC.
WHITE MESA MILL
San Juan County, Utah
Feedstock Storage Area Map
CJ Feedstock Storage Area
Date: January 2022
Source: Energy Fuels, 2022
---.. ..--,1••· r.,,.l5A.l6
\
N
A
0 50 100 200
Feet
-· • DATE:.~<o_-_C_-_l.....,.3 __ ._
..,, • ....,_., ....... n, ..
...l3rll6
,,.
I ENERGY FUELS RESOURCES (USA), INC.
WHITE MESA MILL N
San Juan County, Utah A Feedstock Storage Area Map
UTAH a 50 100 200 D Feedstock Storage Area Feet
* Date: January 2022
Source: Energy Fuels, 2022
-·
J
. ;
I
UTAH
*
•
:; i I
I _·' -~l----
ENERGY FUELS RESOURCES (USA), INC.
WHITE MESA MILL
San Juan County, Utah
Feedstock Storage Area Map
D Feedstock Storage Area
Date: January 2022
Source: Energy Fuels, 2022
...... .,,,,_, ...
f'l.,rl!IJ.Yo
'
N
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t
0 50 100 200
Feet
--¥ WNu.MaaM.alc.tw,.,.M11~T~l'u
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UTAH
*
• DATE: 6 · ,, -Ll
ENERGY FUELS RESOURCES (USA), INC.
WHITE MESA MILL
San Juan County, Utah
Feedstock Storage Area Map
CJ Feedstock Storage Area
Date: January 2022
Source: Energy Fuels, 2022
..... ...._ ... , ........ , r-.~~-
N
A
0 50 100 200
Feet
-·
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*
DATE:--=-f,_-......,(_,f.._1..-___,2.,"""-'"'3'----_....,._
' "
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I 11 !
ENERGY FUELS RESOURCES (USA), INC.
WHITE MESA MILL
San Juan County, Utah
Feedstock Storage Area Map
D Feedstock Storage Area
Date: January 2022
Source: Energy Fuels, 2022
-···-.. ·~·•·· Po,r25-':!IA
\
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0 50 100 200
Feet
...... _ . ._, ...
WWWM-Mlll~"4"' ............ Tn:"-"-,rl'lu-...... l!l.1!11
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WHITE MESA MILL N
San Juan County, Utah
Feedstock Storage Area Map A
UTAH 0 50 100 200 c:J Feedstock Storage Area Feet
* Date: January 2022
Source: Energy Fuels, 2022
Attachment I
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Precipitation Chart
Rain or Snow Recorded in Inches of Moisture Received
YEAR 2023 Month April
Rain Snow Rain Snow
1 17
2 18
3 19
4 20
5 21
6 22
7 23
8 24 0,0 t;
9 25
10 26
11 27
12 28
13 29
14 30 .o~
15 31
16
Combined
Total: D .07
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Precipitation Chart
Rain or Snow Recorded in Inches of Moisture Received
YEAR 2023 Month May
Rain Snow Rain Snow
11--_________ 17
21--_______ 18
3 ________ 19 4 ________ -1 20 :2-::,-s _______ -1 21 , l'-t
61------t-----1 22 .o~
7________ 23
8________ 24
9_________ 25
10 ________ 26
11 1--_______ 27
121--______ 28
13 ________ 29
14 ________ 30
15 _______ 31
16
Combined
Total: 0 .Y~
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Energy Fuels Resources (USA) Inc.
White Mesa Mill
Precipitation Chart
Rain or Snow Recorded in Inches of Moisture Received
YEAR 2023 Month June
Rain Snow Rain Snow
17
18
19
20
21
22
,30 23
24
25
26
27
28
29
30
31
.0.3
Combined
Total: .33